diff options
129 files changed, 4040 insertions, 2805 deletions
@@ -1944,6 +1944,11 @@ E: kraxel@bytesex.org E: kraxel@suse.de D: video4linux, bttv, vesafb, some scsi, misc fixes +N: Hans J. Koch +D: USERSPACE I/O, MAX6650 +D: Hans passed away in June 2016, and will be greatly missed. +W: https://lwn.net/Articles/691000/ + N: Harald Koenig E: koenig@tat.physik.uni-tuebingen.de D: XFree86 (S3), DCF77, some kernel hacks and fixes diff --git a/Documentation/ABI/testing/sysfs-class-mic.txt b/Documentation/ABI/testing/sysfs-class-mic.txt index d45eed2..6ef6826 100644 --- a/Documentation/ABI/testing/sysfs-class-mic.txt +++ b/Documentation/ABI/testing/sysfs-class-mic.txt @@ -153,7 +153,7 @@ Description: What: /sys/class/mic/mic(x)/heartbeat_enable Date: March 2015 -KernelVersion: 3.20 +KernelVersion: 4.4 Contact: Ashutosh Dixit <ashutosh.dixit@intel.com> Description: The MIC drivers detect and inform user space about card crashes diff --git a/Documentation/ABI/testing/sysfs-i2c-bmp085 b/Documentation/ABI/testing/sysfs-i2c-bmp085 deleted file mode 100644 index 585962a..0000000 --- a/Documentation/ABI/testing/sysfs-i2c-bmp085 +++ /dev/null @@ -1,31 +0,0 @@ -What: /sys/bus/i2c/devices/<busnum>-<devaddr>/pressure0_input -Date: June 2010 -Contact: Christoph Mair <christoph.mair@gmail.com> -Description: Start a pressure measurement and read the result. Values - represent the ambient air pressure in pascal (0.01 millibar). - - Reading: returns the current air pressure. - - -What: /sys/bus/i2c/devices/<busnum>-<devaddr>/temp0_input -Date: June 2010 -Contact: Christoph Mair <christoph.mair@gmail.com> -Description: Measure the ambient temperature. The returned value represents - the ambient temperature in units of 0.1 degree celsius. - - Reading: returns the current temperature. - - -What: /sys/bus/i2c/devices/<busnum>-<devaddr>/oversampling -Date: June 2010 -Contact: Christoph Mair <christoph.mair@gmail.com> -Description: Tell the bmp085 to use more samples to calculate a pressure - value. When writing to this file the chip will use 2^x samples - to calculate the next pressure value with x being the value - written. Using this feature will decrease RMS noise and - increase the measurement time. - - Reading: returns the current oversampling setting. - - Writing: sets a new oversampling setting. - Accepted values: 0..3. diff --git a/Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt b/Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt index 8f86ab3..94aeeea 100644 --- a/Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt +++ b/Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt @@ -1,11 +1,20 @@ = Rockchip eFuse device tree bindings = Required properties: -- compatible: Should be "rockchip,rockchip-efuse" +- compatible: Should be one of the following. + - "rockchip,rk3066a-efuse" - for RK3066a SoCs. + - "rockchip,rk3188-efuse" - for RK3188 SoCs. + - "rockchip,rk3288-efuse" - for RK3288 SoCs. + - "rockchip,rk3399-efuse" - for RK3399 SoCs. - reg: Should contain the registers location and exact eFuse size - clocks: Should be the clock id of eFuse - clock-names: Should be "pclk_efuse" +Deprecated properties: +- compatible: "rockchip,rockchip-efuse" + Old efuse compatible value compatible to rk3066a, rk3188 and rk3288 + efuses + = Data cells = Are child nodes of eFuse, bindings of which as described in bindings/nvmem/nvmem.txt @@ -13,7 +22,7 @@ bindings/nvmem/nvmem.txt Example: efuse: efuse@ffb40000 { - compatible = "rockchip,rockchip-efuse"; + compatible = "rockchip,rk3288-efuse"; reg = <0xffb40000 0x20>; #address-cells = <1>; #size-cells = <1>; diff --git a/Documentation/vme_api.txt b/Documentation/vme_api.txt index ca5b827..9000655 100644 --- a/Documentation/vme_api.txt +++ b/Documentation/vme_api.txt @@ -8,13 +8,14 @@ As with other subsystems within the Linux kernel, VME device drivers register with the VME subsystem, typically called from the devices init routine. This is achieved via a call to the following function: - int vme_register_driver (struct vme_driver *driver); + int vme_register_driver (struct vme_driver *driver, unsigned int ndevs); If driver registration is successful this function returns zero, if an error occurred a negative error code will be returned. A pointer to a structure of type 'vme_driver' must be provided to the -registration function. The structure is as follows: +registration function. Along with ndevs, which is the number of devices your +driver is able to support. The structure is as follows: struct vme_driver { struct list_head node; @@ -32,8 +33,8 @@ At the minimum, the '.name', '.match' and '.probe' elements of this structure should be correctly set. The '.name' element is a pointer to a string holding the device driver's name. -The '.match' function allows controlling the number of devices that need to -be registered. The match function should return 1 if a device should be +The '.match' function allows control over which VME devices should be registered +with the driver. The match function should return 1 if a device should be probed and 0 otherwise. This example match function (from vme_user.c) limits the number of devices probed to one: @@ -385,13 +386,13 @@ location monitor location. Each location monitor can monitor a number of adjacent locations: int vme_lm_attach(struct vme_resource *res, int num, - void (*callback)(int)); + void (*callback)(void *)); int vme_lm_detach(struct vme_resource *res, int num); The callback function is declared as follows. - void callback(int num); + void callback(void *data); Slot Detection diff --git a/MAINTAINERS b/MAINTAINERS index bbfe20c..1547825 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7458,9 +7458,8 @@ F: Documentation/hwmon/max20751 F: drivers/hwmon/max20751.c MAX6650 HARDWARE MONITOR AND FAN CONTROLLER DRIVER -M: "Hans J. Koch" <hjk@hansjkoch.de> L: linux-hwmon@vger.kernel.org -S: Maintained +S: Orphan F: Documentation/hwmon/max6650 F: drivers/hwmon/max6650.c @@ -12418,7 +12417,6 @@ F: fs/hostfs/ F: fs/hppfs/ USERSPACE I/O (UIO) -M: "Hans J. Koch" <hjk@hansjkoch.de> M: Greg Kroah-Hartman <gregkh@linuxfoundation.org> S: Maintained T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git diff --git a/arch/arm/common/bL_switcher_dummy_if.c b/arch/arm/common/bL_switcher_dummy_if.c index 3f47f12..6053f64 100644 --- a/arch/arm/common/bL_switcher_dummy_if.c +++ b/arch/arm/common/bL_switcher_dummy_if.c @@ -56,16 +56,4 @@ static struct miscdevice bL_switcher_device = { "b.L_switcher", &bL_switcher_fops }; - -static int __init bL_switcher_dummy_if_init(void) -{ - return misc_register(&bL_switcher_device); -} - -static void __exit bL_switcher_dummy_if_exit(void) -{ - misc_deregister(&bL_switcher_device); -} - -module_init(bL_switcher_dummy_if_init); -module_exit(bL_switcher_dummy_if_exit); +module_misc_device(bL_switcher_device); diff --git a/arch/blackfin/mach-bf561/coreb.c b/arch/blackfin/mach-bf561/coreb.c index 78ecb50..8a2543c 100644 --- a/arch/blackfin/mach-bf561/coreb.c +++ b/arch/blackfin/mach-bf561/coreb.c @@ -59,18 +59,7 @@ static struct miscdevice coreb_dev = { .name = "coreb", .fops = &coreb_fops, }; - -static int __init bf561_coreb_init(void) -{ - return misc_register(&coreb_dev); -} -module_init(bf561_coreb_init); - -static void __exit bf561_coreb_exit(void) -{ - misc_deregister(&coreb_dev); -} -module_exit(bf561_coreb_exit); +module_misc_device(coreb_dev); MODULE_AUTHOR("Bas Vermeulen <bvermeul@blackstar.xs4all.nl>"); MODULE_DESCRIPTION("BF561 Core B Support"); diff --git a/arch/um/drivers/harddog_kern.c b/arch/um/drivers/harddog_kern.c index 2d0266d..3282787 100644 --- a/arch/um/drivers/harddog_kern.c +++ b/arch/um/drivers/harddog_kern.c @@ -175,27 +175,4 @@ static struct miscdevice harddog_miscdev = { .name = "watchdog", .fops = &harddog_fops, }; - -static char banner[] __initdata = KERN_INFO "UML Watchdog Timer\n"; - -static int __init harddog_init(void) -{ - int ret; - - ret = misc_register(&harddog_miscdev); - - if (ret) - return ret; - - printk(banner); - - return 0; -} - -static void __exit harddog_exit(void) -{ - misc_deregister(&harddog_miscdev); -} - -module_init(harddog_init); -module_exit(harddog_exit); +module_misc_device(harddog_miscdev); diff --git a/drivers/Makefile b/drivers/Makefile index 53abb4a..f0afdfb 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -29,6 +29,8 @@ obj-$(CONFIG_SFI) += sfi/ # was used and do nothing if so obj-$(CONFIG_PNP) += pnp/ obj-y += amba/ + +obj-y += clk/ # Many drivers will want to use DMA so this has to be made available # really early. obj-$(CONFIG_DMADEVICES) += dma/ @@ -142,8 +144,6 @@ obj-$(CONFIG_VHOST) += vhost/ obj-$(CONFIG_VLYNQ) += vlynq/ obj-$(CONFIG_STAGING) += staging/ obj-y += platform/ -#common clk code -obj-y += clk/ obj-$(CONFIG_MAILBOX) += mailbox/ obj-$(CONFIG_HWSPINLOCK) += hwspinlock/ diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c index 3ff229b..c4a75a1 100644 --- a/drivers/bluetooth/hci_vhci.c +++ b/drivers/bluetooth/hci_vhci.c @@ -377,21 +377,7 @@ static struct miscdevice vhci_miscdev = { .fops = &vhci_fops, .minor = VHCI_MINOR, }; - -static int __init vhci_init(void) -{ - BT_INFO("Virtual HCI driver ver %s", VERSION); - - return misc_register(&vhci_miscdev); -} - -static void __exit vhci_exit(void) -{ - misc_deregister(&vhci_miscdev); -} - -module_init(vhci_init); -module_exit(vhci_exit); +module_misc_device(vhci_miscdev); module_param(amp, bool, 0644); MODULE_PARM_DESC(amp, "Create AMP controller device"); diff --git a/drivers/char/bfin-otp.c b/drivers/char/bfin-otp.c index 44660f1..35d46da 100644 --- a/drivers/char/bfin-otp.c +++ b/drivers/char/bfin-otp.c @@ -230,45 +230,7 @@ static struct miscdevice bfin_otp_misc_device = { .name = DRIVER_NAME, .fops = &bfin_otp_fops, }; - -/** - * bfin_otp_init - Initialize module - * - * Registers the device and notifier handler. Actual device - * initialization is handled by bfin_otp_open(). - */ -static int __init bfin_otp_init(void) -{ - int ret; - - stampit(); - - ret = misc_register(&bfin_otp_misc_device); - if (ret) { - pr_init(KERN_ERR PFX "unable to register a misc device\n"); - return ret; - } - - pr_init(KERN_INFO PFX "initialized\n"); - - return 0; -} - -/** - * bfin_otp_exit - Deinitialize module - * - * Unregisters the device and notifier handler. Actual device - * deinitialization is handled by bfin_otp_close(). - */ -static void __exit bfin_otp_exit(void) -{ - stampit(); - - misc_deregister(&bfin_otp_misc_device); -} - -module_init(bfin_otp_init); -module_exit(bfin_otp_exit); +module_misc_device(bfin_otp_misc_device); MODULE_AUTHOR("Mike Frysinger <vapier@gentoo.org>"); MODULE_DESCRIPTION("Blackfin OTP Memory Interface"); diff --git a/drivers/char/mem.c b/drivers/char/mem.c index a33163d..5bb1985 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -381,6 +381,9 @@ static ssize_t read_kmem(struct file *file, char __user *buf, char *kbuf; /* k-addr because vread() takes vmlist_lock rwlock */ int err = 0; + if (!pfn_valid(PFN_DOWN(p))) + return -EIO; + read = 0; if (p < (unsigned long) high_memory) { low_count = count; @@ -509,6 +512,9 @@ static ssize_t write_kmem(struct file *file, const char __user *buf, char *kbuf; /* k-addr because vwrite() takes vmlist_lock rwlock */ int err = 0; + if (!pfn_valid(PFN_DOWN(p))) + return -EIO; + if (p < (unsigned long) high_memory) { unsigned long to_write = min_t(unsigned long, count, (unsigned long)high_memory - p); diff --git a/drivers/char/mwave/3780i.c b/drivers/char/mwave/3780i.c index 2874004..972c40a 100644 --- a/drivers/char/mwave/3780i.c +++ b/drivers/char/mwave/3780i.c @@ -124,7 +124,7 @@ static void dsp3780I_WriteGenCfg(unsigned short usDspBaseIO, unsigned uIndex, MKBYTE(rSlaveControl)); rSlaveControl_Save = rSlaveControl; - rSlaveControl.ConfigMode = TRUE; + rSlaveControl.ConfigMode = true; PRINTK_2(TRACE_3780I, "3780i::dsp3780i_WriteGenCfg entry rSlaveControl+ConfigMode %x\n", @@ -155,7 +155,7 @@ unsigned char dsp3780I_ReadGenCfg(unsigned short usDspBaseIO, MKBYTE(rSlaveControl) = InByteDsp(DSP_IsaSlaveControl); rSlaveControl_Save = rSlaveControl; - rSlaveControl.ConfigMode = TRUE; + rSlaveControl.ConfigMode = true; OutByteDsp(DSP_IsaSlaveControl, MKBYTE(rSlaveControl)); OutByteDsp(DSP_ConfigAddress, (unsigned char) uIndex); ucValue = InByteDsp(DSP_ConfigData); @@ -230,7 +230,7 @@ int dsp3780I_EnableDSP(DSP_3780I_CONFIG_SETTINGS * pSettings, rUartCfg1.BaseIO = 3; break; } - rUartCfg2.Enable = TRUE; + rUartCfg2.Enable = true; } rHBridgeCfg1.Reserved = rHBridgeCfg2.Reserved = 0; @@ -238,7 +238,7 @@ int dsp3780I_EnableDSP(DSP_3780I_CONFIG_SETTINGS * pSettings, rHBridgeCfg1.IrqPulse = pSettings->bDspIrqPulse; rHBridgeCfg1.Irq = (unsigned char) pIrqMap[pSettings->usDspIrq]; rHBridgeCfg1.AccessMode = 1; - rHBridgeCfg2.Enable = TRUE; + rHBridgeCfg2.Enable = true; rBusmasterCfg2.Reserved = 0; @@ -278,8 +278,8 @@ int dsp3780I_EnableDSP(DSP_3780I_CONFIG_SETTINGS * pSettings, * soft-reset active for 10ms. */ rSlaveControl.ClockControl = 0; - rSlaveControl.SoftReset = TRUE; - rSlaveControl.ConfigMode = FALSE; + rSlaveControl.SoftReset = true; + rSlaveControl.ConfigMode = false; rSlaveControl.Reserved = 0; PRINTK_4(TRACE_3780I, @@ -302,7 +302,7 @@ int dsp3780I_EnableDSP(DSP_3780I_CONFIG_SETTINGS * pSettings, for (i = 0; i < 11; i++) udelay(2000); - rSlaveControl.SoftReset = FALSE; + rSlaveControl.SoftReset = false; OutWordDsp(DSP_IsaSlaveControl, MKWORD(rSlaveControl)); MKWORD(tval) = InWordDsp(DSP_IsaSlaveControl); @@ -326,10 +326,10 @@ int dsp3780I_EnableDSP(DSP_3780I_CONFIG_SETTINGS * pSettings, } - rHBridgeControl.EnableDspInt = FALSE; - rHBridgeControl.MemAutoInc = TRUE; - rHBridgeControl.IoAutoInc = FALSE; - rHBridgeControl.DiagnosticMode = FALSE; + rHBridgeControl.EnableDspInt = false; + rHBridgeControl.MemAutoInc = true; + rHBridgeControl.IoAutoInc = false; + rHBridgeControl.DiagnosticMode = false; PRINTK_3(TRACE_3780I, "3780i::dsp3780i_EnableDSP DSP_HBridgeControl %x rHBridgeControl %x\n", @@ -345,7 +345,7 @@ int dsp3780I_EnableDSP(DSP_3780I_CONFIG_SETTINGS * pSettings, ChipID = ReadMsaCfg(DSP_ChipID); PRINTK_2(TRACE_3780I, - "3780i::dsp3780I_EnableDSP exiting bRC=TRUE, ChipID %x\n", + "3780i::dsp3780I_EnableDSP exiting bRC=true, ChipID %x\n", ChipID); return 0; @@ -361,8 +361,8 @@ int dsp3780I_DisableDSP(DSP_3780I_CONFIG_SETTINGS * pSettings) PRINTK_1(TRACE_3780I, "3780i::dsp3780i_DisableDSP entry\n"); rSlaveControl.ClockControl = 0; - rSlaveControl.SoftReset = TRUE; - rSlaveControl.ConfigMode = FALSE; + rSlaveControl.SoftReset = true; + rSlaveControl.ConfigMode = false; rSlaveControl.Reserved = 0; spin_lock_irqsave(&dsp_lock, flags); OutWordDsp(DSP_IsaSlaveControl, MKWORD(rSlaveControl)); @@ -398,14 +398,14 @@ int dsp3780I_Reset(DSP_3780I_CONFIG_SETTINGS * pSettings) PRINTK_2(TRACE_3780I, "3780i::dsp3780i_Reset rHBridgeControl %x\n", MKWORD(rHBridgeControl)); - rHBridgeControl.EnableDspInt = FALSE; + rHBridgeControl.EnableDspInt = false; OutWordDsp(DSP_HBridgeControl, MKWORD(rHBridgeControl)); spin_unlock_irqrestore(&dsp_lock, flags); /* Reset the core via the boot domain register */ - rBootDomain.ResetCore = TRUE; - rBootDomain.Halt = TRUE; - rBootDomain.NMI = TRUE; + rBootDomain.ResetCore = true; + rBootDomain.Halt = true; + rBootDomain.NMI = true; rBootDomain.Reserved = 0; PRINTK_2(TRACE_3780I, "3780i::dsp3780i_Reset rBootDomain %x\n", @@ -438,26 +438,26 @@ int dsp3780I_Run(DSP_3780I_CONFIG_SETTINGS * pSettings) /* Transition the core to a running state */ - rBootDomain.ResetCore = TRUE; - rBootDomain.Halt = FALSE; - rBootDomain.NMI = TRUE; + rBootDomain.ResetCore = true; + rBootDomain.Halt = false; + rBootDomain.NMI = true; rBootDomain.Reserved = 0; WriteMsaCfg(DSP_MspBootDomain, MKWORD(rBootDomain)); udelay(5); - rBootDomain.ResetCore = FALSE; + rBootDomain.ResetCore = false; WriteMsaCfg(DSP_MspBootDomain, MKWORD(rBootDomain)); udelay(5); - rBootDomain.NMI = FALSE; + rBootDomain.NMI = false; WriteMsaCfg(DSP_MspBootDomain, MKWORD(rBootDomain)); udelay(5); /* Enable DSP to PC interrupt */ spin_lock_irqsave(&dsp_lock, flags); MKWORD(rHBridgeControl) = InWordDsp(DSP_HBridgeControl); - rHBridgeControl.EnableDspInt = TRUE; + rHBridgeControl.EnableDspInt = true; PRINTK_2(TRACE_3780I, "3780i::dsp3780i_Run rHBridgeControl %x\n", MKWORD(rHBridgeControl)); @@ -466,7 +466,7 @@ int dsp3780I_Run(DSP_3780I_CONFIG_SETTINGS * pSettings) spin_unlock_irqrestore(&dsp_lock, flags); - PRINTK_1(TRACE_3780I, "3780i::dsp3780i_Run exit bRC=TRUE\n"); + PRINTK_1(TRACE_3780I, "3780i::dsp3780i_Run exit bRC=true\n"); return 0; } @@ -508,7 +508,7 @@ int dsp3780I_ReadDStore(unsigned short usDspBaseIO, void __user *pvBuffer, PRINTK_1(TRACE_3780I, - "3780I::dsp3780I_ReadDStore exit bRC=TRUE\n"); + "3780I::dsp3780I_ReadDStore exit bRC=true\n"); return 0; } @@ -550,7 +550,7 @@ int dsp3780I_ReadAndClearDStore(unsigned short usDspBaseIO, PRINTK_1(TRACE_3780I, - "3780I::dsp3780I_ReadAndClearDStore exit bRC=TRUE\n"); + "3780I::dsp3780I_ReadAndClearDStore exit bRC=true\n"); return 0; } @@ -592,7 +592,7 @@ int dsp3780I_WriteDStore(unsigned short usDspBaseIO, void __user *pvBuffer, PRINTK_1(TRACE_3780I, - "3780I::dsp3780D_WriteDStore exit bRC=TRUE\n"); + "3780I::dsp3780D_WriteDStore exit bRC=true\n"); return 0; } @@ -640,7 +640,7 @@ int dsp3780I_ReadIStore(unsigned short usDspBaseIO, void __user *pvBuffer, } PRINTK_1(TRACE_3780I, - "3780I::dsp3780I_ReadIStore exit bRC=TRUE\n"); + "3780I::dsp3780I_ReadIStore exit bRC=true\n"); return 0; } @@ -689,7 +689,7 @@ int dsp3780I_WriteIStore(unsigned short usDspBaseIO, void __user *pvBuffer, } PRINTK_1(TRACE_3780I, - "3780I::dsp3780I_WriteIStore exit bRC=TRUE\n"); + "3780I::dsp3780I_WriteIStore exit bRC=true\n"); return 0; } @@ -713,7 +713,7 @@ int dsp3780I_GetIPCSource(unsigned short usDspBaseIO, */ spin_lock_irqsave(&dsp_lock, flags); MKWORD(rHBridgeControl) = InWordDsp(DSP_HBridgeControl); - rHBridgeControl.EnableDspInt = FALSE; + rHBridgeControl.EnableDspInt = false; OutWordDsp(DSP_HBridgeControl, MKWORD(rHBridgeControl)); *pusIPCSource = InWordDsp(DSP_Interrupt); @@ -725,7 +725,7 @@ int dsp3780I_GetIPCSource(unsigned short usDspBaseIO, OutWordDsp(DSP_Interrupt, (unsigned short) ~(*pusIPCSource)); - rHBridgeControl.EnableDspInt = TRUE; + rHBridgeControl.EnableDspInt = true; OutWordDsp(DSP_HBridgeControl, MKWORD(rHBridgeControl)); spin_unlock_irqrestore(&dsp_lock, flags); diff --git a/drivers/char/mwave/3780i.h b/drivers/char/mwave/3780i.h index fba6ab1..9ccb6b2 100644 --- a/drivers/char/mwave/3780i.h +++ b/drivers/char/mwave/3780i.h @@ -101,7 +101,7 @@ typedef struct { } DSP_UART_CFG_1; typedef struct { - unsigned char Enable:1; /* RW: Enable I/O and IRQ: 0=FALSE, 1=TRUE */ + unsigned char Enable:1; /* RW: Enable I/O and IRQ: 0=false, 1=true */ unsigned char Reserved:7; /* 0: Reserved */ } DSP_UART_CFG_2; @@ -114,7 +114,7 @@ typedef struct { } DSP_HBRIDGE_CFG_1; typedef struct { - unsigned char Enable:1; /* RW: enable I/O and IRQ: 0=FALSE, 1=TRUE */ + unsigned char Enable:1; /* RW: enable I/O and IRQ: 0=false, 1=true */ unsigned char Reserved:7; /* 0: Reserved */ } DSP_HBRIDGE_CFG_2; @@ -133,12 +133,12 @@ typedef struct { typedef struct { - unsigned char GateIOCHRDY:1; /* RW: Enable IOCHRDY gating: 0=FALSE, 1=TRUE */ + unsigned char GateIOCHRDY:1; /* RW: Enable IOCHRDY gating: 0=false, 1=true */ unsigned char Reserved:7; /* 0: Reserved */ } DSP_ISA_PROT_CFG; typedef struct { - unsigned char Enable:1; /* RW: Enable low power suspend/resume 0=FALSE, 1=TRUE */ + unsigned char Enable:1; /* RW: Enable low power suspend/resume 0=false, 1=true */ unsigned char Reserved:7; /* 0: Reserved */ } DSP_POWER_MGMT_CFG; diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c index 164544a..3a3ff2e 100644 --- a/drivers/char/mwave/mwavedd.c +++ b/drivers/char/mwave/mwavedd.c @@ -296,8 +296,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd, pDrvData->IPCs[ipcnum].usIntCount); mutex_lock(&mwave_mutex); - pDrvData->IPCs[ipcnum].bIsHere = FALSE; - pDrvData->IPCs[ipcnum].bIsEnabled = TRUE; + pDrvData->IPCs[ipcnum].bIsHere = false; + pDrvData->IPCs[ipcnum].bIsEnabled = true; mutex_unlock(&mwave_mutex); PRINTK_2(TRACE_MWAVE, @@ -324,7 +324,7 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd, pDrvData->IPCs[ipcnum].usIntCount); mutex_lock(&mwave_mutex); - if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) { + if (pDrvData->IPCs[ipcnum].bIsEnabled == true) { DECLARE_WAITQUEUE(wait, current); PRINTK_2(TRACE_MWAVE, @@ -332,7 +332,7 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd, " ipc %x going to sleep\n", ipcnum); add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait); - pDrvData->IPCs[ipcnum].bIsHere = TRUE; + pDrvData->IPCs[ipcnum].bIsHere = true; set_current_state(TASK_INTERRUPTIBLE); /* check whether an event was signalled by */ /* the interrupt handler while we were gone */ @@ -355,7 +355,7 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd, " application\n", ipcnum); } - pDrvData->IPCs[ipcnum].bIsHere = FALSE; + pDrvData->IPCs[ipcnum].bIsHere = false; remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait); set_current_state(TASK_RUNNING); PRINTK_2(TRACE_MWAVE, @@ -384,9 +384,9 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd, return -EINVAL; } mutex_lock(&mwave_mutex); - if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) { - pDrvData->IPCs[ipcnum].bIsEnabled = FALSE; - if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) { + if (pDrvData->IPCs[ipcnum].bIsEnabled == true) { + pDrvData->IPCs[ipcnum].bIsEnabled = false; + if (pDrvData->IPCs[ipcnum].bIsHere == true) { wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue); } } @@ -541,7 +541,7 @@ static void mwave_exit(void) if (pDrvData->device_registered) { device_unregister(&mwave_device); - pDrvData->device_registered = FALSE; + pDrvData->device_registered = false; } #endif @@ -576,16 +576,16 @@ static int __init mwave_init(void) memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA)); - pDrvData->bBDInitialized = FALSE; - pDrvData->bResourcesClaimed = FALSE; - pDrvData->bDSPEnabled = FALSE; - pDrvData->bDSPReset = FALSE; - pDrvData->bMwaveDevRegistered = FALSE; + pDrvData->bBDInitialized = false; + pDrvData->bResourcesClaimed = false; + pDrvData->bDSPEnabled = false; + pDrvData->bDSPReset = false; + pDrvData->bMwaveDevRegistered = false; pDrvData->sLine = -1; for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) { - pDrvData->IPCs[i].bIsEnabled = FALSE; - pDrvData->IPCs[i].bIsHere = FALSE; + pDrvData->IPCs[i].bIsEnabled = false; + pDrvData->IPCs[i].bIsHere = false; pDrvData->IPCs[i].usIntCount = 0; /* no ints received yet */ init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue); } @@ -601,7 +601,7 @@ static int __init mwave_init(void) " Failed to initialize board data\n"); goto cleanup_error; } - pDrvData->bBDInitialized = TRUE; + pDrvData->bBDInitialized = true; retval = tp3780I_CalcResources(&pDrvData->rBDData); PRINTK_2(TRACE_MWAVE, @@ -626,7 +626,7 @@ static int __init mwave_init(void) " Failed to claim resources\n"); goto cleanup_error; } - pDrvData->bResourcesClaimed = TRUE; + pDrvData->bResourcesClaimed = true; retval = tp3780I_EnableDSP(&pDrvData->rBDData); PRINTK_2(TRACE_MWAVE, @@ -639,7 +639,7 @@ static int __init mwave_init(void) " Failed to enable DSP\n"); goto cleanup_error; } - pDrvData->bDSPEnabled = TRUE; + pDrvData->bDSPEnabled = true; if (misc_register(&mwave_misc_dev) < 0) { PRINTK_ERROR(KERN_ERR_MWAVE @@ -647,7 +647,7 @@ static int __init mwave_init(void) " Failed to register misc device\n"); goto cleanup_error; } - pDrvData->bMwaveDevRegistered = TRUE; + pDrvData->bMwaveDevRegistered = true; pDrvData->sLine = register_serial_portandirq( pDrvData->rBDData.rDspSettings.usUartBaseIO, @@ -668,7 +668,7 @@ static int __init mwave_init(void) if (device_register(&mwave_device)) goto cleanup_error; - pDrvData->device_registered = TRUE; + pDrvData->device_registered = true; for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) { if(device_create_file(&mwave_device, mwave_dev_attrs[i])) { PRINTK_ERROR(KERN_ERR_MWAVE diff --git a/drivers/char/mwave/mwavedd.h b/drivers/char/mwave/mwavedd.h index 7e0d530..37e0a49 100644 --- a/drivers/char/mwave/mwavedd.h +++ b/drivers/char/mwave/mwavedd.h @@ -125,8 +125,8 @@ extern int mwave_uart_io; typedef struct _MWAVE_IPC { unsigned short usIntCount; /* 0=none, 1=first, 2=greater than 1st */ - BOOLEAN bIsEnabled; - BOOLEAN bIsHere; + bool bIsEnabled; + bool bIsHere; /* entry spin lock */ wait_queue_head_t ipc_wait_queue; } MWAVE_IPC; @@ -135,12 +135,12 @@ typedef struct _MWAVE_DEVICE_DATA { THINKPAD_BD_DATA rBDData; /* board driver's data area */ unsigned long ulIPCSource_ISR; /* IPC source bits for recently processed intr, set during ISR processing */ unsigned long ulIPCSource_DPC; /* IPC source bits for recently processed intr, set during DPC processing */ - BOOLEAN bBDInitialized; - BOOLEAN bResourcesClaimed; - BOOLEAN bDSPEnabled; - BOOLEAN bDSPReset; + bool bBDInitialized; + bool bResourcesClaimed; + bool bDSPEnabled; + bool bDSPReset; MWAVE_IPC IPCs[16]; - BOOLEAN bMwaveDevRegistered; + bool bMwaveDevRegistered; short sLine; int nr_registered_attrs; int device_registered; diff --git a/drivers/char/mwave/smapi.c b/drivers/char/mwave/smapi.c index 6187fd1..8c5411a 100644 --- a/drivers/char/mwave/smapi.c +++ b/drivers/char/mwave/smapi.c @@ -493,7 +493,7 @@ exit_smapi_request_error: } -int smapi_set_DSP_power_state(BOOLEAN bOn) +int smapi_set_DSP_power_state(bool bOn) { int bRC = -EIO; unsigned short usAX, usBX, usCX, usDX, usDI, usSI; @@ -556,7 +556,7 @@ int smapi_init(void) PRINTK_ERROR("smapi::smapi_init, ERROR unable to read from SMAPI port\n"); } else { PRINTK_2(TRACE_SMAPI, - "smapi::smapi_init, exit TRUE g_usSmapiPort %x\n", + "smapi::smapi_init, exit true g_usSmapiPort %x\n", g_usSmapiPort); retval = 0; //SmapiQuerySystemID(); diff --git a/drivers/char/mwave/smapi.h b/drivers/char/mwave/smapi.h index 64b2ec1..ebc206b 100644 --- a/drivers/char/mwave/smapi.h +++ b/drivers/char/mwave/smapi.h @@ -49,10 +49,6 @@ #ifndef _LINUX_SMAPI_H #define _LINUX_SMAPI_H -#define TRUE 1 -#define FALSE 0 -#define BOOLEAN int - typedef struct { int bDSPPresent; int bDSPEnabled; @@ -74,7 +70,7 @@ typedef struct { int smapi_init(void); int smapi_query_DSP_cfg(SMAPI_DSP_SETTINGS * pSettings); int smapi_set_DSP_cfg(void); -int smapi_set_DSP_power_state(BOOLEAN bOn); +int smapi_set_DSP_power_state(bool bOn); #endif diff --git a/drivers/char/mwave/tp3780i.c b/drivers/char/mwave/tp3780i.c index 04e6d6a..5e1618a 100644 --- a/drivers/char/mwave/tp3780i.c +++ b/drivers/char/mwave/tp3780i.c @@ -80,13 +80,13 @@ static void EnableSRAM(THINKPAD_BD_DATA * pBDData) WriteMsaCfg(DSP_GpioModeControl_15_8, MKWORD(rGpioMode)); MKWORD(rGpioDriverEnable) = 0; - rGpioDriverEnable.Enable10 = TRUE; - rGpioDriverEnable.Mask10 = TRUE; + rGpioDriverEnable.Enable10 = true; + rGpioDriverEnable.Mask10 = true; WriteMsaCfg(DSP_GpioDriverEnable_15_8, MKWORD(rGpioDriverEnable)); MKWORD(rGpioOutputData) = 0; rGpioOutputData.Latch10 = 0; - rGpioOutputData.Mask10 = TRUE; + rGpioOutputData.Mask10 = true; WriteMsaCfg(DSP_GpioOutputData_15_8, MKWORD(rGpioOutputData)); PRINTK_1(TRACE_TP3780I, "tp3780i::EnableSRAM exit\n"); @@ -127,7 +127,7 @@ static irqreturn_t DspInterrupt(int irq, void *dev_id) PRINTK_2(TRACE_TP3780I, "tp3780i::DspInterrupt usIntCount %x\n", pDrvData->IPCs[usPCNum - 1].usIntCount); - if (pDrvData->IPCs[usPCNum - 1].bIsEnabled == TRUE) { + if (pDrvData->IPCs[usPCNum - 1].bIsEnabled == true) { PRINTK_2(TRACE_TP3780I, "tp3780i::DspInterrupt, waking up usPCNum %x\n", usPCNum - 1); @@ -160,8 +160,8 @@ int tp3780I_InitializeBoardData(THINKPAD_BD_DATA * pBDData) PRINTK_2(TRACE_TP3780I, "tp3780i::tp3780I_InitializeBoardData entry pBDData %p\n", pBDData); - pBDData->bDSPEnabled = FALSE; - pSettings->bInterruptClaimed = FALSE; + pBDData->bDSPEnabled = false; + pSettings->bInterruptClaimed = false; retval = smapi_init(); if (retval) { @@ -269,7 +269,7 @@ int tp3780I_ReleaseResources(THINKPAD_BD_DATA * pBDData) if (pSettings->bInterruptClaimed) { free_irq(pSettings->usDspIrq, NULL); - pSettings->bInterruptClaimed = FALSE; + pSettings->bInterruptClaimed = false; } PRINTK_2(TRACE_TP3780I, @@ -283,7 +283,7 @@ int tp3780I_ReleaseResources(THINKPAD_BD_DATA * pBDData) int tp3780I_EnableDSP(THINKPAD_BD_DATA * pBDData) { DSP_3780I_CONFIG_SETTINGS *pSettings = &pBDData->rDspSettings; - BOOLEAN bDSPPoweredUp = FALSE, bInterruptAllocated = FALSE; + bool bDSPPoweredUp = false, bInterruptAllocated = false; PRINTK_2(TRACE_TP3780I, "tp3780i::tp3780I_EnableDSP entry pBDData %p\n", pBDData); @@ -336,14 +336,14 @@ int tp3780I_EnableDSP(THINKPAD_BD_DATA * pBDData) } } - pSettings->bDspIrqActiveLow = pSettings->bDspIrqPulse = TRUE; - pSettings->bUartIrqActiveLow = pSettings->bUartIrqPulse = TRUE; + pSettings->bDspIrqActiveLow = pSettings->bDspIrqPulse = true; + pSettings->bUartIrqActiveLow = pSettings->bUartIrqPulse = true; if (pBDData->bShareDspIrq) { - pSettings->bDspIrqActiveLow = FALSE; + pSettings->bDspIrqActiveLow = false; } if (pBDData->bShareUartIrq) { - pSettings->bUartIrqActiveLow = FALSE; + pSettings->bUartIrqActiveLow = false; } pSettings->usNumTransfers = TP_CFG_NumTransfers; @@ -373,16 +373,16 @@ int tp3780I_EnableDSP(THINKPAD_BD_DATA * pBDData) PRINTK_3(TRACE_TP3780I, "tp3780i::tp3780I_EnableDSP, got interrupt %x bShareDspIrq %x\n", pSettings->usDspIrq, pBDData->bShareDspIrq); - bInterruptAllocated = TRUE; - pSettings->bInterruptClaimed = TRUE; + bInterruptAllocated = true; + pSettings->bInterruptClaimed = true; } - smapi_set_DSP_power_state(FALSE); - if (smapi_set_DSP_power_state(TRUE)) { - PRINTK_ERROR(KERN_ERR_MWAVE "tp3780i::tp3780I_EnableDSP: Error: smapi_set_DSP_power_state(TRUE) failed\n"); + smapi_set_DSP_power_state(false); + if (smapi_set_DSP_power_state(true)) { + PRINTK_ERROR(KERN_ERR_MWAVE "tp3780i::tp3780I_EnableDSP: Error: smapi_set_DSP_power_state(true) failed\n"); goto exit_cleanup; } else { - bDSPPoweredUp = TRUE; + bDSPPoweredUp = true; } if (dsp3780I_EnableDSP(pSettings, s_ausThinkpadIrqToField, s_ausThinkpadDmaToField)) { @@ -392,7 +392,7 @@ int tp3780I_EnableDSP(THINKPAD_BD_DATA * pBDData) EnableSRAM(pBDData); - pBDData->bDSPEnabled = TRUE; + pBDData->bDSPEnabled = true; PRINTK_1(TRACE_TP3780I, "tp3780i::tp3780I_EnableDSP exit\n"); @@ -401,10 +401,10 @@ int tp3780I_EnableDSP(THINKPAD_BD_DATA * pBDData) exit_cleanup: PRINTK_ERROR("tp3780i::tp3780I_EnableDSP: Cleaning up\n"); if (bDSPPoweredUp) - smapi_set_DSP_power_state(FALSE); + smapi_set_DSP_power_state(false); if (bInterruptAllocated) { free_irq(pSettings->usDspIrq, NULL); - pSettings->bInterruptClaimed = FALSE; + pSettings->bInterruptClaimed = false; } return -EIO; } @@ -421,10 +421,10 @@ int tp3780I_DisableDSP(THINKPAD_BD_DATA * pBDData) dsp3780I_DisableDSP(&pBDData->rDspSettings); if (pSettings->bInterruptClaimed) { free_irq(pSettings->usDspIrq, NULL); - pSettings->bInterruptClaimed = FALSE; + pSettings->bInterruptClaimed = false; } - smapi_set_DSP_power_state(FALSE); - pBDData->bDSPEnabled = FALSE; + smapi_set_DSP_power_state(false); + pBDData->bDSPEnabled = false; } PRINTK_2(TRACE_TP3780I, "tp3780i::tp3780I_DisableDSP exit retval %x\n", retval); @@ -516,7 +516,7 @@ int tp3780I_ReadWriteDspDStore(THINKPAD_BD_DATA * pBDData, unsigned int uOpcode, int retval = 0; DSP_3780I_CONFIG_SETTINGS *pSettings = &pBDData->rDspSettings; unsigned short usDspBaseIO = pSettings->usDspBaseIO; - BOOLEAN bRC = 0; + bool bRC = 0; PRINTK_6(TRACE_TP3780I, "tp3780i::tp3780I_ReadWriteDspDStore entry pBDData %p, uOpcode %x, pvBuffer %p, uCount %x, ulDSPAddr %lx\n", @@ -552,7 +552,7 @@ int tp3780I_ReadWriteDspIStore(THINKPAD_BD_DATA * pBDData, unsigned int uOpcode, int retval = 0; DSP_3780I_CONFIG_SETTINGS *pSettings = &pBDData->rDspSettings; unsigned short usDspBaseIO = pSettings->usDspBaseIO; - BOOLEAN bRC = 0; + bool bRC = 0; PRINTK_6(TRACE_TP3780I, "tp3780i::tp3780I_ReadWriteDspIStore entry pBDData %p, uOpcode %x, pvBuffer %p, uCount %x, ulDSPAddr %lx\n", diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c index f8a483c..d233688 100644 --- a/drivers/char/ppdev.c +++ b/drivers/char/ppdev.c @@ -286,7 +286,7 @@ static int register_device(int minor, struct pp_struct *pp) struct parport *port; struct pardevice *pdev = NULL; char *name; - int fl; + struct pardev_cb ppdev_cb; name = kasprintf(GFP_KERNEL, CHRDEV "%x", minor); if (name == NULL) @@ -299,9 +299,11 @@ static int register_device(int minor, struct pp_struct *pp) return -ENXIO; } - fl = (pp->flags & PP_EXCL) ? PARPORT_FLAG_EXCL : 0; - pdev = parport_register_device(port, name, NULL, - NULL, pp_irq, fl, pp); + memset(&ppdev_cb, 0, sizeof(ppdev_cb)); + ppdev_cb.irq_func = pp_irq; + ppdev_cb.flags = (pp->flags & PP_EXCL) ? PARPORT_FLAG_EXCL : 0; + ppdev_cb.private = pp; + pdev = parport_register_dev_model(port, name, &ppdev_cb, minor); parport_put_port(port); if (!pdev) { @@ -799,10 +801,23 @@ static void pp_detach(struct parport *port) device_destroy(ppdev_class, MKDEV(PP_MAJOR, port->number)); } +static int pp_probe(struct pardevice *par_dev) +{ + struct device_driver *drv = par_dev->dev.driver; + int len = strlen(drv->name); + + if (strncmp(par_dev->name, drv->name, len)) + return -ENODEV; + + return 0; +} + static struct parport_driver pp_driver = { .name = CHRDEV, - .attach = pp_attach, + .probe = pp_probe, + .match_port = pp_attach, .detach = pp_detach, + .devmodel = true, }; static int __init ppdev_init(void) diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c index 94006f9..10e5632 100644 --- a/drivers/char/snsc.c +++ b/drivers/char/snsc.c @@ -385,13 +385,18 @@ scdrv_init(void) event_nasid = ia64_sn_get_console_nasid(); + snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME); + if (IS_ERR(snsc_class)) { + printk("%s: failed to allocate class\n", __func__); + return PTR_ERR(snsc_class); + } + if (alloc_chrdev_region(&first_dev, 0, num_cnodes, SYSCTL_BASENAME) < 0) { printk("%s: failed to register SN system controller device\n", __func__); return -ENODEV; } - snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME); for (cnode = 0; cnode < num_cnodes; cnode++) { geoid = cnodeid_get_geoid(cnode); diff --git a/drivers/char/tile-srom.c b/drivers/char/tile-srom.c index 69f6b4a..398800e 100644 --- a/drivers/char/tile-srom.c +++ b/drivers/char/tile-srom.c @@ -331,13 +331,11 @@ static const struct file_operations srom_fops = { /** * srom_setup_minor() - Initialize per-minor information. * @srom: Per-device SROM state. - * @index: Device to set up. + * @devhdl: Partition device handle. */ -static int srom_setup_minor(struct srom_dev *srom, int index) +static int srom_setup_minor(struct srom_dev *srom, int devhdl) { - struct device *dev; - int devhdl = srom->hv_devhdl; - + srom->hv_devhdl = devhdl; mutex_init(&srom->lock); if (_srom_read(devhdl, &srom->total_size, @@ -350,9 +348,7 @@ static int srom_setup_minor(struct srom_dev *srom, int index) SROM_PAGE_SIZE_OFF, sizeof(srom->page_size)) < 0) return -EIO; - dev = device_create(srom_class, &srom_parent->dev, - MKDEV(srom_major, index), srom, "%d", index); - return PTR_ERR_OR_ZERO(dev); + return 0; } /** srom_init() - Initialize the driver's module. */ @@ -365,7 +361,7 @@ static int srom_init(void) * Start with a plausible number of partitions; the krealloc() call * below will yield about log(srom_devs) additional allocations. */ - srom_devices = kzalloc(4 * sizeof(struct srom_dev), GFP_KERNEL); + srom_devices = kmalloc(4 * sizeof(struct srom_dev), GFP_KERNEL); /* Discover the number of srom partitions. */ for (i = 0; ; i++) { @@ -373,7 +369,7 @@ static int srom_init(void) char buf[20]; struct srom_dev *new_srom_devices = krealloc(srom_devices, (i+1) * sizeof(struct srom_dev), - GFP_KERNEL | __GFP_ZERO); + GFP_KERNEL); if (!new_srom_devices) { result = -ENOMEM; goto fail_mem; @@ -387,7 +383,9 @@ static int srom_init(void) i, devhdl); break; } - srom_devices[i].hv_devhdl = devhdl; + result = srom_setup_minor(&srom_devices[i], devhdl); + if (result != 0) + goto fail_mem; } srom_devs = i; @@ -431,9 +429,13 @@ static int srom_init(void) srom_class->dev_groups = srom_dev_groups; srom_class->devnode = srom_devnode; - /* Do per-partition initialization */ + /* Create per-partition devices */ for (i = 0; i < srom_devs; i++) { - result = srom_setup_minor(srom_devices + i, i); + struct device *dev = + device_create(srom_class, &srom_parent->dev, + MKDEV(srom_major, i), srom_devices + i, + "%d", i); + result = PTR_ERR_OR_ZERO(dev); if (result < 0) goto fail_class; } diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c index b098d2d..67549ce 100644 --- a/drivers/char/ttyprintk.c +++ b/drivers/char/ttyprintk.c @@ -31,60 +31,53 @@ static struct ttyprintk_port tpk_port; * printk messages (also suitable for logging service): * - any cr is replaced by nl * - adds a ttyprintk source tag in front of each line - * - too long message is fragmeted, with '\'nl between fragments - * - TPK_STR_SIZE isn't really the write_room limiting factor, bcause + * - too long message is fragmented, with '\'nl between fragments + * - TPK_STR_SIZE isn't really the write_room limiting factor, because * it is emptied on the fly during preformatting. */ #define TPK_STR_SIZE 508 /* should be bigger then max expected line length */ #define TPK_MAX_ROOM 4096 /* we could assume 4K for instance */ -static const char *tpk_tag = "[U] "; /* U for User */ static int tpk_curr; +static char tpk_buffer[TPK_STR_SIZE + 4]; + +static void tpk_flush(void) +{ + if (tpk_curr > 0) { + tpk_buffer[tpk_curr] = '\0'; + pr_info("[U] %s\n", tpk_buffer); + tpk_curr = 0; + } +} + static int tpk_printk(const unsigned char *buf, int count) { - static char tmp[TPK_STR_SIZE + 4]; int i = tpk_curr; if (buf == NULL) { - /* flush tmp[] */ - if (tpk_curr > 0) { - /* non nl or cr terminated message - add nl */ - tmp[tpk_curr + 0] = '\n'; - tmp[tpk_curr + 1] = '\0'; - printk(KERN_INFO "%s%s", tpk_tag, tmp); - tpk_curr = 0; - } + tpk_flush(); return i; } for (i = 0; i < count; i++) { - tmp[tpk_curr] = buf[i]; - if (tpk_curr < TPK_STR_SIZE) { - switch (buf[i]) { - case '\r': - /* replace cr with nl */ - tmp[tpk_curr + 0] = '\n'; - tmp[tpk_curr + 1] = '\0'; - printk(KERN_INFO "%s%s", tpk_tag, tmp); - tpk_curr = 0; - if ((i + 1) < count && buf[i + 1] == '\n') - i++; - break; - case '\n': - tmp[tpk_curr + 1] = '\0'; - printk(KERN_INFO "%s%s", tpk_tag, tmp); - tpk_curr = 0; - break; - default: - tpk_curr++; - } - } else { + if (tpk_curr >= TPK_STR_SIZE) { /* end of tmp buffer reached: cut the message in two */ - tmp[tpk_curr + 1] = '\\'; - tmp[tpk_curr + 2] = '\n'; - tmp[tpk_curr + 3] = '\0'; - printk(KERN_INFO "%s%s", tpk_tag, tmp); - tpk_curr = 0; + tpk_buffer[tpk_curr++] = '\\'; + tpk_flush(); + } + + switch (buf[i]) { + case '\r': + tpk_flush(); + if ((i + 1) < count && buf[i + 1] == '\n') + i++; + break; + case '\n': + tpk_flush(); + break; + default: + tpk_buffer[tpk_curr++] = buf[i]; + break; } } diff --git a/drivers/char/xillybus/xillybus_core.c b/drivers/char/xillybus/xillybus_core.c index dcd19f3..b6c9cde 100644 --- a/drivers/char/xillybus/xillybus_core.c +++ b/drivers/char/xillybus/xillybus_core.c @@ -655,10 +655,10 @@ static int xilly_obtain_idt(struct xilly_endpoint *endpoint) version = channel->wr_buffers[0]->addr; - /* Check version number. Accept anything below 0x82 for now. */ + /* Check version number. Reject anything above 0x82. */ if (*version > 0x82) { dev_err(endpoint->dev, - "No support for IDT version 0x%02x. Maybe the xillybus driver needs an upgarde. Aborting.\n", + "No support for IDT version 0x%02x. Maybe the xillybus driver needs an upgrade. Aborting.\n", *version); return -ENODEV; } diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig index d614102..cd84934 100644 --- a/drivers/fpga/Kconfig +++ b/drivers/fpga/Kconfig @@ -21,6 +21,7 @@ config FPGA_MGR_SOCFPGA config FPGA_MGR_ZYNQ_FPGA tristate "Xilinx Zynq FPGA" + depends on ARCH_ZYNQ || COMPILE_TEST depends on HAS_DMA help FPGA manager driver support for Xilinx Zynq FPGAs. diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c index 99ec3ff..7f8ff39 100644 --- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -779,19 +779,8 @@ static struct miscdevice uhid_misc = { .minor = UHID_MINOR, .name = UHID_NAME, }; +module_misc_device(uhid_misc); -static int __init uhid_init(void) -{ - return misc_register(&uhid_misc); -} - -static void __exit uhid_exit(void) -{ - misc_deregister(&uhid_misc); -} - -module_init(uhid_init); -module_exit(uhid_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>"); MODULE_DESCRIPTION("User-space I/O driver support for HID subsystem"); diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 56dd261..16f91c8 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -43,7 +43,12 @@ static void vmbus_setevent(struct vmbus_channel *channel) { struct hv_monitor_page *monitorpage; - if (channel->offermsg.monitor_allocated) { + /* + * For channels marked as in "low latency" mode + * bypass the monitor page mechanism. + */ + if ((channel->offermsg.monitor_allocated) && + (!channel->low_latency)) { /* Each u32 represents 32 channels */ sync_set_bit(channel->offermsg.child_relid & 31, (unsigned long *) vmbus_connection.send_int_page + @@ -70,12 +75,14 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, { struct vmbus_channel_open_channel *open_msg; struct vmbus_channel_msginfo *open_info = NULL; - void *in, *out; unsigned long flags; int ret, err = 0; - unsigned long t; struct page *page; + if (send_ringbuffer_size % PAGE_SIZE || + recv_ringbuffer_size % PAGE_SIZE) + return -EINVAL; + spin_lock_irqsave(&newchannel->lock, flags); if (newchannel->state == CHANNEL_OPEN_STATE) { newchannel->state = CHANNEL_OPENING_STATE; @@ -95,36 +102,33 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, recv_ringbuffer_size)); if (!page) - out = (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, - get_order(send_ringbuffer_size + - recv_ringbuffer_size)); - else - out = (void *)page_address(page); + page = alloc_pages(GFP_KERNEL|__GFP_ZERO, + get_order(send_ringbuffer_size + + recv_ringbuffer_size)); - if (!out) { + if (!page) { err = -ENOMEM; - goto error0; + goto error_set_chnstate; } - in = (void *)((unsigned long)out + send_ringbuffer_size); - - newchannel->ringbuffer_pages = out; + newchannel->ringbuffer_pages = page_address(page); newchannel->ringbuffer_pagecount = (send_ringbuffer_size + recv_ringbuffer_size) >> PAGE_SHIFT; - ret = hv_ringbuffer_init( - &newchannel->outbound, out, send_ringbuffer_size); + ret = hv_ringbuffer_init(&newchannel->outbound, page, + send_ringbuffer_size >> PAGE_SHIFT); if (ret != 0) { err = ret; - goto error0; + goto error_free_pages; } - ret = hv_ringbuffer_init( - &newchannel->inbound, in, recv_ringbuffer_size); + ret = hv_ringbuffer_init(&newchannel->inbound, + &page[send_ringbuffer_size >> PAGE_SHIFT], + recv_ringbuffer_size >> PAGE_SHIFT); if (ret != 0) { err = ret; - goto error0; + goto error_free_pages; } @@ -132,14 +136,14 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, newchannel->ringbuffer_gpadlhandle = 0; ret = vmbus_establish_gpadl(newchannel, - newchannel->outbound.ring_buffer, - send_ringbuffer_size + - recv_ringbuffer_size, - &newchannel->ringbuffer_gpadlhandle); + page_address(page), + send_ringbuffer_size + + recv_ringbuffer_size, + &newchannel->ringbuffer_gpadlhandle); if (ret != 0) { err = ret; - goto error0; + goto error_free_pages; } /* Create and init the channel open message */ @@ -148,7 +152,7 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, GFP_KERNEL); if (!open_info) { err = -ENOMEM; - goto error_gpadl; + goto error_free_gpadl; } init_completion(&open_info->waitevent); @@ -164,7 +168,7 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, if (userdatalen > MAX_USER_DEFINED_BYTES) { err = -EINVAL; - goto error_gpadl; + goto error_free_gpadl; } if (userdatalen) @@ -180,14 +184,10 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, if (ret != 0) { err = ret; - goto error1; + goto error_clean_msglist; } - t = wait_for_completion_timeout(&open_info->waitevent, 5*HZ); - if (t == 0) { - err = -ETIMEDOUT; - goto error1; - } + wait_for_completion(&open_info->waitevent); spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags); list_del(&open_info->msglistentry); @@ -195,25 +195,27 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, if (open_info->response.open_result.status) { err = -EAGAIN; - goto error_gpadl; + goto error_free_gpadl; } newchannel->state = CHANNEL_OPENED_STATE; kfree(open_info); return 0; -error1: +error_clean_msglist: spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags); list_del(&open_info->msglistentry); spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags); -error_gpadl: +error_free_gpadl: vmbus_teardown_gpadl(newchannel, newchannel->ringbuffer_gpadlhandle); - -error0: - free_pages((unsigned long)out, - get_order(send_ringbuffer_size + recv_ringbuffer_size)); kfree(open_info); +error_free_pages: + hv_ringbuffer_cleanup(&newchannel->outbound); + hv_ringbuffer_cleanup(&newchannel->inbound); + __free_pages(page, + get_order(send_ringbuffer_size + recv_ringbuffer_size)); +error_set_chnstate: newchannel->state = CHANNEL_OPEN_STATE; return err; } @@ -238,8 +240,7 @@ EXPORT_SYMBOL_GPL(vmbus_send_tl_connect_request); * create_gpadl_header - Creates a gpadl for the specified buffer */ static int create_gpadl_header(void *kbuffer, u32 size, - struct vmbus_channel_msginfo **msginfo, - u32 *messagecount) + struct vmbus_channel_msginfo **msginfo) { int i; int pagecount; @@ -283,7 +284,6 @@ static int create_gpadl_header(void *kbuffer, u32 size, gpadl_header->range[0].pfn_array[i] = slow_virt_to_phys( kbuffer + PAGE_SIZE * i) >> PAGE_SHIFT; *msginfo = msgheader; - *messagecount = 1; pfnsum = pfncount; pfnleft = pagecount - pfncount; @@ -323,7 +323,6 @@ static int create_gpadl_header(void *kbuffer, u32 size, } msgbody->msgsize = msgsize; - (*messagecount)++; gpadl_body = (struct vmbus_channel_gpadl_body *)msgbody->msg; @@ -352,6 +351,8 @@ static int create_gpadl_header(void *kbuffer, u32 size, msgheader = kzalloc(msgsize, GFP_KERNEL); if (msgheader == NULL) goto nomem; + + INIT_LIST_HEAD(&msgheader->submsglist); msgheader->msgsize = msgsize; gpadl_header = (struct vmbus_channel_gpadl_header *) @@ -366,7 +367,6 @@ static int create_gpadl_header(void *kbuffer, u32 size, kbuffer + PAGE_SIZE * i) >> PAGE_SHIFT; *msginfo = msgheader; - *messagecount = 1; } return 0; @@ -390,8 +390,7 @@ int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer, struct vmbus_channel_gpadl_header *gpadlmsg; struct vmbus_channel_gpadl_body *gpadl_body; struct vmbus_channel_msginfo *msginfo = NULL; - struct vmbus_channel_msginfo *submsginfo; - u32 msgcount; + struct vmbus_channel_msginfo *submsginfo, *tmp; struct list_head *curr; u32 next_gpadl_handle; unsigned long flags; @@ -400,7 +399,7 @@ int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer, next_gpadl_handle = (atomic_inc_return(&vmbus_connection.next_gpadl_handle) - 1); - ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount); + ret = create_gpadl_header(kbuffer, size, &msginfo); if (ret) return ret; @@ -423,24 +422,21 @@ int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer, if (ret != 0) goto cleanup; - if (msgcount > 1) { - list_for_each(curr, &msginfo->submsglist) { - - submsginfo = (struct vmbus_channel_msginfo *)curr; - gpadl_body = - (struct vmbus_channel_gpadl_body *)submsginfo->msg; + list_for_each(curr, &msginfo->submsglist) { + submsginfo = (struct vmbus_channel_msginfo *)curr; + gpadl_body = + (struct vmbus_channel_gpadl_body *)submsginfo->msg; - gpadl_body->header.msgtype = - CHANNELMSG_GPADL_BODY; - gpadl_body->gpadl = next_gpadl_handle; + gpadl_body->header.msgtype = + CHANNELMSG_GPADL_BODY; + gpadl_body->gpadl = next_gpadl_handle; - ret = vmbus_post_msg(gpadl_body, - submsginfo->msgsize - - sizeof(*submsginfo)); - if (ret != 0) - goto cleanup; + ret = vmbus_post_msg(gpadl_body, + submsginfo->msgsize - + sizeof(*submsginfo)); + if (ret != 0) + goto cleanup; - } } wait_for_completion(&msginfo->waitevent); @@ -451,6 +447,10 @@ cleanup: spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags); list_del(&msginfo->msglistentry); spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags); + list_for_each_entry_safe(submsginfo, tmp, &msginfo->submsglist, + msglistentry) { + kfree(submsginfo); + } kfree(msginfo); return ret; @@ -512,7 +512,6 @@ static void reset_channel_cb(void *arg) static int vmbus_close_internal(struct vmbus_channel *channel) { struct vmbus_channel_close_channel *msg; - struct tasklet_struct *tasklet; int ret; /* @@ -524,8 +523,7 @@ static int vmbus_close_internal(struct vmbus_channel *channel) * To resolve the race, we can serialize them by disabling the * tasklet when the latter is running here. */ - tasklet = hv_context.event_dpc[channel->target_cpu]; - tasklet_disable(tasklet); + hv_event_tasklet_disable(channel); /* * In case a device driver's probe() fails (e.g., @@ -591,7 +589,7 @@ static int vmbus_close_internal(struct vmbus_channel *channel) get_order(channel->ringbuffer_pagecount * PAGE_SIZE)); out: - tasklet_enable(tasklet); + hv_event_tasklet_enable(channel); return ret; } @@ -659,7 +657,7 @@ int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer, bufferlist[2].iov_len = (packetlen_aligned - packetlen); ret = hv_ringbuffer_write(&channel->outbound, bufferlist, num_vecs, - &signal, lock); + &signal, lock, channel->signal_policy); /* * Signalling the host is conditional on many factors: @@ -680,11 +678,6 @@ int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer, * mechanism which can hurt the performance otherwise. */ - if (channel->signal_policy) - signal = true; - else - kick_q = true; - if (((ret == 0) && kick_q && signal) || (ret && !is_hvsock_channel(channel))) vmbus_setevent(channel); @@ -777,7 +770,7 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel, bufferlist[2].iov_len = (packetlen_aligned - packetlen); ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3, - &signal, lock); + &signal, lock, channel->signal_policy); /* * Signalling the host is conditional on many factors: @@ -795,11 +788,6 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel, * enough condition that it should not matter. */ - if (channel->signal_policy) - signal = true; - else - kick_q = true; - if (((ret == 0) && kick_q && signal) || (ret)) vmbus_setevent(channel); @@ -861,7 +849,7 @@ int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel, bufferlist[2].iov_len = (packetlen_aligned - packetlen); ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3, - &signal, lock); + &signal, lock, channel->signal_policy); if (ret == 0 && signal) vmbus_setevent(channel); @@ -926,7 +914,7 @@ int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, bufferlist[2].iov_len = (packetlen_aligned - packetlen); ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3, - &signal, lock); + &signal, lock, channel->signal_policy); if (ret == 0 && signal) vmbus_setevent(channel); diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index b6c1211..96a85cd 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -21,6 +21,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kernel.h> +#include <linux/interrupt.h> #include <linux/sched.h> #include <linux/wait.h> #include <linux/mm.h> @@ -138,10 +139,32 @@ static const struct vmbus_device vmbus_devs[] = { }, }; -static u16 hv_get_dev_type(const uuid_le *guid) +static const struct { + uuid_le guid; +} vmbus_unsupported_devs[] = { + { HV_AVMA1_GUID }, + { HV_AVMA2_GUID }, + { HV_RDV_GUID }, +}; + +static bool is_unsupported_vmbus_devs(const uuid_le *guid) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(vmbus_unsupported_devs); i++) + if (!uuid_le_cmp(*guid, vmbus_unsupported_devs[i].guid)) + return true; + return false; +} + +static u16 hv_get_dev_type(const struct vmbus_channel *channel) { + const uuid_le *guid = &channel->offermsg.offer.if_type; u16 i; + if (is_hvsock_channel(channel) || is_unsupported_vmbus_devs(guid)) + return HV_UNKOWN; + for (i = HV_IDE; i < HV_UNKOWN; i++) { if (!uuid_le_cmp(*guid, vmbus_devs[i].guid)) return i; @@ -251,14 +274,12 @@ EXPORT_SYMBOL_GPL(vmbus_prep_negotiate_resp); */ static struct vmbus_channel *alloc_channel(void) { - static atomic_t chan_num = ATOMIC_INIT(0); struct vmbus_channel *channel; channel = kzalloc(sizeof(*channel), GFP_ATOMIC); if (!channel) return NULL; - channel->id = atomic_inc_return(&chan_num); channel->acquire_ring_lock = true; spin_lock_init(&channel->inbound_lock); spin_lock_init(&channel->lock); @@ -303,16 +324,32 @@ static void vmbus_release_relid(u32 relid) vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released)); } +void hv_event_tasklet_disable(struct vmbus_channel *channel) +{ + struct tasklet_struct *tasklet; + tasklet = hv_context.event_dpc[channel->target_cpu]; + tasklet_disable(tasklet); +} + +void hv_event_tasklet_enable(struct vmbus_channel *channel) +{ + struct tasklet_struct *tasklet; + tasklet = hv_context.event_dpc[channel->target_cpu]; + tasklet_enable(tasklet); + + /* In case there is any pending event */ + tasklet_schedule(tasklet); +} + void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid) { unsigned long flags; struct vmbus_channel *primary_channel; - vmbus_release_relid(relid); - BUG_ON(!channel->rescind); BUG_ON(!mutex_is_locked(&vmbus_connection.channel_mutex)); + hv_event_tasklet_disable(channel); if (channel->target_cpu != get_cpu()) { put_cpu(); smp_call_function_single(channel->target_cpu, @@ -321,6 +358,7 @@ void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid) percpu_channel_deq(channel); put_cpu(); } + hv_event_tasklet_enable(channel); if (channel->primary_channel == NULL) { list_del(&channel->listentry); @@ -338,8 +376,11 @@ void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid) * We need to free the bit for init_vp_index() to work in the case * of sub-channel, when we reload drivers like hv_netvsc. */ - cpumask_clear_cpu(channel->target_cpu, - &primary_channel->alloced_cpus_in_node); + if (channel->affinity_policy == HV_LOCALIZED) + cpumask_clear_cpu(channel->target_cpu, + &primary_channel->alloced_cpus_in_node); + + vmbus_release_relid(relid); free_channel(channel); } @@ -405,10 +446,13 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) goto err_free_chan; } - dev_type = hv_get_dev_type(&newchannel->offermsg.offer.if_type); + dev_type = hv_get_dev_type(newchannel); + if (dev_type == HV_NIC) + set_channel_signal_state(newchannel, HV_SIGNAL_POLICY_EXPLICIT); init_vp_index(newchannel, dev_type); + hv_event_tasklet_disable(newchannel); if (newchannel->target_cpu != get_cpu()) { put_cpu(); smp_call_function_single(newchannel->target_cpu, @@ -418,6 +462,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) percpu_channel_enq(newchannel); put_cpu(); } + hv_event_tasklet_enable(newchannel); /* * This state is used to indicate a successful open @@ -463,12 +508,11 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) return; err_deq_chan: - vmbus_release_relid(newchannel->offermsg.child_relid); - mutex_lock(&vmbus_connection.channel_mutex); list_del(&newchannel->listentry); mutex_unlock(&vmbus_connection.channel_mutex); + hv_event_tasklet_disable(newchannel); if (newchannel->target_cpu != get_cpu()) { put_cpu(); smp_call_function_single(newchannel->target_cpu, @@ -477,6 +521,9 @@ err_deq_chan: percpu_channel_deq(newchannel); put_cpu(); } + hv_event_tasklet_enable(newchannel); + + vmbus_release_relid(newchannel->offermsg.child_relid); err_free_chan: free_channel(newchannel); @@ -522,17 +569,17 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type) } /* - * We distribute primary channels evenly across all the available - * NUMA nodes and within the assigned NUMA node we will assign the - * first available CPU to the primary channel. - * The sub-channels will be assigned to the CPUs available in the - * NUMA node evenly. + * Based on the channel affinity policy, we will assign the NUMA + * nodes. */ - if (!primary) { + + if ((channel->affinity_policy == HV_BALANCED) || (!primary)) { while (true) { next_node = next_numa_node_id++; - if (next_node == nr_node_ids) + if (next_node == nr_node_ids) { next_node = next_numa_node_id = 0; + continue; + } if (cpumask_empty(cpumask_of_node(next_node))) continue; break; @@ -556,15 +603,17 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type) cur_cpu = -1; - /* - * Normally Hyper-V host doesn't create more subchannels than there - * are VCPUs on the node but it is possible when not all present VCPUs - * on the node are initialized by guest. Clear the alloced_cpus_in_node - * to start over. - */ - if (cpumask_equal(&primary->alloced_cpus_in_node, - cpumask_of_node(primary->numa_node))) - cpumask_clear(&primary->alloced_cpus_in_node); + if (primary->affinity_policy == HV_LOCALIZED) { + /* + * Normally Hyper-V host doesn't create more subchannels + * than there are VCPUs on the node but it is possible when not + * all present VCPUs on the node are initialized by guest. + * Clear the alloced_cpus_in_node to start over. + */ + if (cpumask_equal(&primary->alloced_cpus_in_node, + cpumask_of_node(primary->numa_node))) + cpumask_clear(&primary->alloced_cpus_in_node); + } while (true) { cur_cpu = cpumask_next(cur_cpu, &available_mask); @@ -575,17 +624,24 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type) continue; } - /* - * NOTE: in the case of sub-channel, we clear the sub-channel - * related bit(s) in primary->alloced_cpus_in_node in - * hv_process_channel_removal(), so when we reload drivers - * like hv_netvsc in SMP guest, here we're able to re-allocate - * bit from primary->alloced_cpus_in_node. - */ - if (!cpumask_test_cpu(cur_cpu, - &primary->alloced_cpus_in_node)) { - cpumask_set_cpu(cur_cpu, - &primary->alloced_cpus_in_node); + if (primary->affinity_policy == HV_LOCALIZED) { + /* + * NOTE: in the case of sub-channel, we clear the + * sub-channel related bit(s) in + * primary->alloced_cpus_in_node in + * hv_process_channel_removal(), so when we + * reload drivers like hv_netvsc in SMP guest, here + * we're able to re-allocate + * bit from primary->alloced_cpus_in_node. + */ + if (!cpumask_test_cpu(cur_cpu, + &primary->alloced_cpus_in_node)) { + cpumask_set_cpu(cur_cpu, + &primary->alloced_cpus_in_node); + cpumask_set_cpu(cur_cpu, alloced_mask); + break; + } + } else { cpumask_set_cpu(cur_cpu, alloced_mask); break; } diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index fcf8a02..78e6368 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -439,7 +439,7 @@ int vmbus_post_msg(void *buffer, size_t buflen) union hv_connection_id conn_id; int ret = 0; int retries = 0; - u32 msec = 1; + u32 usec = 1; conn_id.asu32 = 0; conn_id.u.id = VMBUS_MESSAGE_CONNECTION_ID; @@ -472,9 +472,9 @@ int vmbus_post_msg(void *buffer, size_t buflen) } retries++; - msleep(msec); - if (msec < 2048) - msec *= 2; + udelay(usec); + if (usec < 2048) + usec *= 2; } return ret; } diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index a1c086b..60dbd6c 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -278,7 +278,7 @@ cleanup: * * This routine is called normally during driver unloading or exiting. */ -void hv_cleanup(void) +void hv_cleanup(bool crash) { union hv_x64_msr_hypercall_contents hypercall_msr; @@ -288,7 +288,8 @@ void hv_cleanup(void) if (hv_context.hypercall_page) { hypercall_msr.as_uint64 = 0; wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); - vfree(hv_context.hypercall_page); + if (!crash) + vfree(hv_context.hypercall_page); hv_context.hypercall_page = NULL; } @@ -308,7 +309,8 @@ void hv_cleanup(void) hypercall_msr.as_uint64 = 0; wrmsrl(HV_X64_MSR_REFERENCE_TSC, hypercall_msr.as_uint64); - vfree(hv_context.tsc_page); + if (!crash) + vfree(hv_context.tsc_page); hv_context.tsc_page = NULL; } #endif diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index df35fb7..fdf8da9 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -430,16 +430,27 @@ struct dm_info_msg { * currently hot added. We hot add in multiples of 128M * chunks; it is possible that we may not be able to bring * online all the pages in the region. The range - * covered_end_pfn defines the pages that can + * covered_start_pfn:covered_end_pfn defines the pages that can * be brough online. */ struct hv_hotadd_state { struct list_head list; unsigned long start_pfn; + unsigned long covered_start_pfn; unsigned long covered_end_pfn; unsigned long ha_end_pfn; unsigned long end_pfn; + /* + * A list of gaps. + */ + struct list_head gap_list; +}; + +struct hv_hotadd_gap { + struct list_head list; + unsigned long start_pfn; + unsigned long end_pfn; }; struct balloon_state { @@ -536,7 +547,11 @@ struct hv_dynmem_device { */ struct task_struct *thread; - struct mutex ha_region_mutex; + /* + * Protects ha_region_list, num_pages_onlined counter and individual + * regions from ha_region_list. + */ + spinlock_t ha_lock; /* * A list of hot-add regions. @@ -560,18 +575,14 @@ static int hv_memory_notifier(struct notifier_block *nb, unsigned long val, void *v) { struct memory_notify *mem = (struct memory_notify *)v; + unsigned long flags; switch (val) { - case MEM_GOING_ONLINE: - mutex_lock(&dm_device.ha_region_mutex); - break; - case MEM_ONLINE: + spin_lock_irqsave(&dm_device.ha_lock, flags); dm_device.num_pages_onlined += mem->nr_pages; + spin_unlock_irqrestore(&dm_device.ha_lock, flags); case MEM_CANCEL_ONLINE: - if (val == MEM_ONLINE || - mutex_is_locked(&dm_device.ha_region_mutex)) - mutex_unlock(&dm_device.ha_region_mutex); if (dm_device.ha_waiting) { dm_device.ha_waiting = false; complete(&dm_device.ol_waitevent); @@ -579,10 +590,11 @@ static int hv_memory_notifier(struct notifier_block *nb, unsigned long val, break; case MEM_OFFLINE: - mutex_lock(&dm_device.ha_region_mutex); + spin_lock_irqsave(&dm_device.ha_lock, flags); dm_device.num_pages_onlined -= mem->nr_pages; - mutex_unlock(&dm_device.ha_region_mutex); + spin_unlock_irqrestore(&dm_device.ha_lock, flags); break; + case MEM_GOING_ONLINE: case MEM_GOING_OFFLINE: case MEM_CANCEL_OFFLINE: break; @@ -595,18 +607,46 @@ static struct notifier_block hv_memory_nb = { .priority = 0 }; +/* Check if the particular page is backed and can be onlined and online it. */ +static void hv_page_online_one(struct hv_hotadd_state *has, struct page *pg) +{ + unsigned long cur_start_pgp; + unsigned long cur_end_pgp; + struct hv_hotadd_gap *gap; + + cur_start_pgp = (unsigned long)pfn_to_page(has->covered_start_pfn); + cur_end_pgp = (unsigned long)pfn_to_page(has->covered_end_pfn); + + /* The page is not backed. */ + if (((unsigned long)pg < cur_start_pgp) || + ((unsigned long)pg >= cur_end_pgp)) + return; + + /* Check for gaps. */ + list_for_each_entry(gap, &has->gap_list, list) { + cur_start_pgp = (unsigned long) + pfn_to_page(gap->start_pfn); + cur_end_pgp = (unsigned long) + pfn_to_page(gap->end_pfn); + if (((unsigned long)pg >= cur_start_pgp) && + ((unsigned long)pg < cur_end_pgp)) { + return; + } + } + + /* This frame is currently backed; online the page. */ + __online_page_set_limits(pg); + __online_page_increment_counters(pg); + __online_page_free(pg); +} -static void hv_bring_pgs_online(unsigned long start_pfn, unsigned long size) +static void hv_bring_pgs_online(struct hv_hotadd_state *has, + unsigned long start_pfn, unsigned long size) { int i; - for (i = 0; i < size; i++) { - struct page *pg; - pg = pfn_to_page(start_pfn + i); - __online_page_set_limits(pg); - __online_page_increment_counters(pg); - __online_page_free(pg); - } + for (i = 0; i < size; i++) + hv_page_online_one(has, pfn_to_page(start_pfn + i)); } static void hv_mem_hot_add(unsigned long start, unsigned long size, @@ -618,9 +658,12 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size, unsigned long start_pfn; unsigned long processed_pfn; unsigned long total_pfn = pfn_count; + unsigned long flags; for (i = 0; i < (size/HA_CHUNK); i++) { start_pfn = start + (i * HA_CHUNK); + + spin_lock_irqsave(&dm_device.ha_lock, flags); has->ha_end_pfn += HA_CHUNK; if (total_pfn > HA_CHUNK) { @@ -632,11 +675,11 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size, } has->covered_end_pfn += processed_pfn; + spin_unlock_irqrestore(&dm_device.ha_lock, flags); init_completion(&dm_device.ol_waitevent); - dm_device.ha_waiting = true; + dm_device.ha_waiting = !memhp_auto_online; - mutex_unlock(&dm_device.ha_region_mutex); nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn)); ret = add_memory(nid, PFN_PHYS((start_pfn)), (HA_CHUNK << PAGE_SHIFT)); @@ -653,20 +696,23 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size, */ do_hot_add = false; } + spin_lock_irqsave(&dm_device.ha_lock, flags); has->ha_end_pfn -= HA_CHUNK; has->covered_end_pfn -= processed_pfn; - mutex_lock(&dm_device.ha_region_mutex); + spin_unlock_irqrestore(&dm_device.ha_lock, flags); break; } /* - * Wait for the memory block to be onlined. - * Since the hot add has succeeded, it is ok to - * proceed even if the pages in the hot added region - * have not been "onlined" within the allowed time. + * Wait for the memory block to be onlined when memory onlining + * is done outside of kernel (memhp_auto_online). Since the hot + * add has succeeded, it is ok to proceed even if the pages in + * the hot added region have not been "onlined" within the + * allowed time. */ - wait_for_completion_timeout(&dm_device.ol_waitevent, 5*HZ); - mutex_lock(&dm_device.ha_region_mutex); + if (dm_device.ha_waiting) + wait_for_completion_timeout(&dm_device.ol_waitevent, + 5*HZ); post_status(&dm_device); } @@ -675,47 +721,64 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size, static void hv_online_page(struct page *pg) { - struct list_head *cur; struct hv_hotadd_state *has; unsigned long cur_start_pgp; unsigned long cur_end_pgp; + unsigned long flags; - list_for_each(cur, &dm_device.ha_region_list) { - has = list_entry(cur, struct hv_hotadd_state, list); - cur_start_pgp = (unsigned long)pfn_to_page(has->start_pfn); - cur_end_pgp = (unsigned long)pfn_to_page(has->covered_end_pfn); + spin_lock_irqsave(&dm_device.ha_lock, flags); + list_for_each_entry(has, &dm_device.ha_region_list, list) { + cur_start_pgp = (unsigned long) + pfn_to_page(has->start_pfn); + cur_end_pgp = (unsigned long)pfn_to_page(has->end_pfn); - if (((unsigned long)pg >= cur_start_pgp) && - ((unsigned long)pg < cur_end_pgp)) { - /* - * This frame is currently backed; online the - * page. - */ - __online_page_set_limits(pg); - __online_page_increment_counters(pg); - __online_page_free(pg); - } + /* The page belongs to a different HAS. */ + if (((unsigned long)pg < cur_start_pgp) || + ((unsigned long)pg >= cur_end_pgp)) + continue; + + hv_page_online_one(has, pg); + break; } + spin_unlock_irqrestore(&dm_device.ha_lock, flags); } -static bool pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt) +static int pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt) { - struct list_head *cur; struct hv_hotadd_state *has; + struct hv_hotadd_gap *gap; unsigned long residual, new_inc; + int ret = 0; + unsigned long flags; - if (list_empty(&dm_device.ha_region_list)) - return false; - - list_for_each(cur, &dm_device.ha_region_list) { - has = list_entry(cur, struct hv_hotadd_state, list); - + spin_lock_irqsave(&dm_device.ha_lock, flags); + list_for_each_entry(has, &dm_device.ha_region_list, list) { /* * If the pfn range we are dealing with is not in the current * "hot add block", move on. */ if (start_pfn < has->start_pfn || start_pfn >= has->end_pfn) continue; + + /* + * If the current start pfn is not where the covered_end + * is, create a gap and update covered_end_pfn. + */ + if (has->covered_end_pfn != start_pfn) { + gap = kzalloc(sizeof(struct hv_hotadd_gap), GFP_ATOMIC); + if (!gap) { + ret = -ENOMEM; + break; + } + + INIT_LIST_HEAD(&gap->list); + gap->start_pfn = has->covered_end_pfn; + gap->end_pfn = start_pfn; + list_add_tail(&gap->list, &has->gap_list); + + has->covered_end_pfn = start_pfn; + } + /* * If the current hot add-request extends beyond * our current limit; extend it. @@ -732,19 +795,12 @@ static bool pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt) has->end_pfn += new_inc; } - /* - * If the current start pfn is not where the covered_end - * is, update it. - */ - - if (has->covered_end_pfn != start_pfn) - has->covered_end_pfn = start_pfn; - - return true; - + ret = 1; + break; } + spin_unlock_irqrestore(&dm_device.ha_lock, flags); - return false; + return ret; } static unsigned long handle_pg_range(unsigned long pg_start, @@ -753,17 +809,13 @@ static unsigned long handle_pg_range(unsigned long pg_start, unsigned long start_pfn = pg_start; unsigned long pfn_cnt = pg_count; unsigned long size; - struct list_head *cur; struct hv_hotadd_state *has; unsigned long pgs_ol = 0; unsigned long old_covered_state; + unsigned long res = 0, flags; - if (list_empty(&dm_device.ha_region_list)) - return 0; - - list_for_each(cur, &dm_device.ha_region_list) { - has = list_entry(cur, struct hv_hotadd_state, list); - + spin_lock_irqsave(&dm_device.ha_lock, flags); + list_for_each_entry(has, &dm_device.ha_region_list, list) { /* * If the pfn range we are dealing with is not in the current * "hot add block", move on. @@ -783,6 +835,8 @@ static unsigned long handle_pg_range(unsigned long pg_start, if (pgs_ol > pfn_cnt) pgs_ol = pfn_cnt; + has->covered_end_pfn += pgs_ol; + pfn_cnt -= pgs_ol; /* * Check if the corresponding memory block is already * online by checking its last previously backed page. @@ -791,10 +845,8 @@ static unsigned long handle_pg_range(unsigned long pg_start, */ if (start_pfn > has->start_pfn && !PageReserved(pfn_to_page(start_pfn - 1))) - hv_bring_pgs_online(start_pfn, pgs_ol); + hv_bring_pgs_online(has, start_pfn, pgs_ol); - has->covered_end_pfn += pgs_ol; - pfn_cnt -= pgs_ol; } if ((has->ha_end_pfn < has->end_pfn) && (pfn_cnt > 0)) { @@ -813,17 +865,20 @@ static unsigned long handle_pg_range(unsigned long pg_start, } else { pfn_cnt = size; } + spin_unlock_irqrestore(&dm_device.ha_lock, flags); hv_mem_hot_add(has->ha_end_pfn, size, pfn_cnt, has); + spin_lock_irqsave(&dm_device.ha_lock, flags); } /* * If we managed to online any pages that were given to us, * we declare success. */ - return has->covered_end_pfn - old_covered_state; - + res = has->covered_end_pfn - old_covered_state; + break; } + spin_unlock_irqrestore(&dm_device.ha_lock, flags); - return 0; + return res; } static unsigned long process_hot_add(unsigned long pg_start, @@ -832,13 +887,20 @@ static unsigned long process_hot_add(unsigned long pg_start, unsigned long rg_size) { struct hv_hotadd_state *ha_region = NULL; + int covered; + unsigned long flags; if (pfn_cnt == 0) return 0; - if (!dm_device.host_specified_ha_region) - if (pfn_covered(pg_start, pfn_cnt)) + if (!dm_device.host_specified_ha_region) { + covered = pfn_covered(pg_start, pfn_cnt); + if (covered < 0) + return 0; + + if (covered) goto do_pg_range; + } /* * If the host has specified a hot-add range; deal with it first. @@ -850,12 +912,17 @@ static unsigned long process_hot_add(unsigned long pg_start, return 0; INIT_LIST_HEAD(&ha_region->list); + INIT_LIST_HEAD(&ha_region->gap_list); - list_add_tail(&ha_region->list, &dm_device.ha_region_list); ha_region->start_pfn = rg_start; ha_region->ha_end_pfn = rg_start; + ha_region->covered_start_pfn = pg_start; ha_region->covered_end_pfn = pg_start; ha_region->end_pfn = rg_start + rg_size; + + spin_lock_irqsave(&dm_device.ha_lock, flags); + list_add_tail(&ha_region->list, &dm_device.ha_region_list); + spin_unlock_irqrestore(&dm_device.ha_lock, flags); } do_pg_range: @@ -882,7 +949,6 @@ static void hot_add_req(struct work_struct *dummy) resp.hdr.size = sizeof(struct dm_hot_add_response); #ifdef CONFIG_MEMORY_HOTPLUG - mutex_lock(&dm_device.ha_region_mutex); pg_start = dm->ha_wrk.ha_page_range.finfo.start_page; pfn_cnt = dm->ha_wrk.ha_page_range.finfo.page_cnt; @@ -916,7 +982,6 @@ static void hot_add_req(struct work_struct *dummy) rg_start, rg_sz); dm->num_pages_added += resp.page_count; - mutex_unlock(&dm_device.ha_region_mutex); #endif /* * The result field of the response structure has the @@ -1010,7 +1075,6 @@ static unsigned long compute_balloon_floor(void) static void post_status(struct hv_dynmem_device *dm) { struct dm_status status; - struct sysinfo val; unsigned long now = jiffies; unsigned long last_post = last_post_time; @@ -1022,7 +1086,6 @@ static void post_status(struct hv_dynmem_device *dm) if (!time_after(now, (last_post_time + HZ))) return; - si_meminfo(&val); memset(&status, 0, sizeof(struct dm_status)); status.hdr.type = DM_STATUS_REPORT; status.hdr.size = sizeof(struct dm_status); @@ -1038,7 +1101,7 @@ static void post_status(struct hv_dynmem_device *dm) * num_pages_onlined) as committed to the host, otherwise it can try * asking us to balloon them out. */ - status.num_avail = val.freeram; + status.num_avail = si_mem_available(); status.num_committed = vm_memory_committed() + dm->num_pages_ballooned + (dm->num_pages_added > dm->num_pages_onlined ? @@ -1144,7 +1207,7 @@ static void balloon_up(struct work_struct *dummy) int ret; bool done = false; int i; - struct sysinfo val; + long avail_pages; unsigned long floor; /* The host balloons pages in 2M granularity. */ @@ -1156,12 +1219,12 @@ static void balloon_up(struct work_struct *dummy) */ alloc_unit = 512; - si_meminfo(&val); + avail_pages = si_mem_available(); floor = compute_balloon_floor(); /* Refuse to balloon below the floor, keep the 2M granularity. */ - if (val.freeram < num_pages || val.freeram - num_pages < floor) { - num_pages = val.freeram > floor ? (val.freeram - floor) : 0; + if (avail_pages < num_pages || avail_pages - num_pages < floor) { + num_pages = avail_pages > floor ? (avail_pages - floor) : 0; num_pages -= num_pages % PAGES_IN_2M; } @@ -1172,7 +1235,6 @@ static void balloon_up(struct work_struct *dummy) bl_resp->hdr.size = sizeof(struct dm_balloon_response); bl_resp->more_pages = 1; - num_pages -= num_ballooned; num_ballooned = alloc_balloon_pages(&dm_device, num_pages, bl_resp, alloc_unit); @@ -1461,7 +1523,7 @@ static int balloon_probe(struct hv_device *dev, init_completion(&dm_device.host_event); init_completion(&dm_device.config_event); INIT_LIST_HEAD(&dm_device.ha_region_list); - mutex_init(&dm_device.ha_region_mutex); + spin_lock_init(&dm_device.ha_lock); INIT_WORK(&dm_device.balloon_wrk.wrk, balloon_up); INIT_WORK(&dm_device.ha_wrk.wrk, hot_add_req); dm_device.host_specified_ha_region = false; @@ -1580,8 +1642,9 @@ probe_error0: static int balloon_remove(struct hv_device *dev) { struct hv_dynmem_device *dm = hv_get_drvdata(dev); - struct list_head *cur, *tmp; - struct hv_hotadd_state *has; + struct hv_hotadd_state *has, *tmp; + struct hv_hotadd_gap *gap, *tmp_gap; + unsigned long flags; if (dm->num_pages_ballooned != 0) pr_warn("Ballooned pages: %d\n", dm->num_pages_ballooned); @@ -1596,11 +1659,16 @@ static int balloon_remove(struct hv_device *dev) restore_online_page_callback(&hv_online_page); unregister_memory_notifier(&hv_memory_nb); #endif - list_for_each_safe(cur, tmp, &dm->ha_region_list) { - has = list_entry(cur, struct hv_hotadd_state, list); + spin_lock_irqsave(&dm_device.ha_lock, flags); + list_for_each_entry_safe(has, tmp, &dm->ha_region_list, list) { + list_for_each_entry_safe(gap, tmp_gap, &has->gap_list, list) { + list_del(&gap->list); + kfree(gap); + } list_del(&has->list); kfree(has); } + spin_unlock_irqrestore(&dm_device.ha_lock, flags); return 0; } diff --git a/drivers/hv/hv_fcopy.c b/drivers/hv/hv_fcopy.c index 23c7079..8b2ba98 100644 --- a/drivers/hv/hv_fcopy.c +++ b/drivers/hv/hv_fcopy.c @@ -83,6 +83,12 @@ static void fcopy_timeout_func(struct work_struct *dummy) hv_poll_channel(fcopy_transaction.recv_channel, fcopy_poll_wrapper); } +static void fcopy_register_done(void) +{ + pr_debug("FCP: userspace daemon registered\n"); + hv_poll_channel(fcopy_transaction.recv_channel, fcopy_poll_wrapper); +} + static int fcopy_handle_handshake(u32 version) { u32 our_ver = FCOPY_CURRENT_VERSION; @@ -94,7 +100,8 @@ static int fcopy_handle_handshake(u32 version) break; case FCOPY_VERSION_1: /* Daemon expects us to reply with our own version */ - if (hvutil_transport_send(hvt, &our_ver, sizeof(our_ver))) + if (hvutil_transport_send(hvt, &our_ver, sizeof(our_ver), + fcopy_register_done)) return -EFAULT; dm_reg_value = version; break; @@ -107,8 +114,7 @@ static int fcopy_handle_handshake(u32 version) */ return -EINVAL; } - pr_debug("FCP: userspace daemon ver. %d registered\n", version); - hv_poll_channel(fcopy_transaction.recv_channel, fcopy_poll_wrapper); + pr_debug("FCP: userspace daemon ver. %d connected\n", version); return 0; } @@ -161,7 +167,7 @@ static void fcopy_send_data(struct work_struct *dummy) } fcopy_transaction.state = HVUTIL_USERSPACE_REQ; - rc = hvutil_transport_send(hvt, out_src, out_len); + rc = hvutil_transport_send(hvt, out_src, out_len, NULL); if (rc) { pr_debug("FCP: failed to communicate to the daemon: %d\n", rc); if (cancel_delayed_work_sync(&fcopy_timeout_work)) { diff --git a/drivers/hv/hv_kvp.c b/drivers/hv/hv_kvp.c index cb1a916..5e1fdc8 100644 --- a/drivers/hv/hv_kvp.c +++ b/drivers/hv/hv_kvp.c @@ -102,6 +102,17 @@ static void kvp_poll_wrapper(void *channel) hv_kvp_onchannelcallback(channel); } +static void kvp_register_done(void) +{ + /* + * If we're still negotiating with the host cancel the timeout + * work to not poll the channel twice. + */ + pr_debug("KVP: userspace daemon registered\n"); + cancel_delayed_work_sync(&kvp_host_handshake_work); + hv_poll_channel(kvp_transaction.recv_channel, kvp_poll_wrapper); +} + static void kvp_register(int reg_value) { @@ -116,7 +127,8 @@ kvp_register(int reg_value) kvp_msg->kvp_hdr.operation = reg_value; strcpy(version, HV_DRV_VERSION); - hvutil_transport_send(hvt, kvp_msg, sizeof(*kvp_msg)); + hvutil_transport_send(hvt, kvp_msg, sizeof(*kvp_msg), + kvp_register_done); kfree(kvp_msg); } } @@ -158,17 +170,10 @@ static int kvp_handle_handshake(struct hv_kvp_msg *msg) /* * We have a compatible daemon; complete the handshake. */ - pr_debug("KVP: userspace daemon ver. %d registered\n", - KVP_OP_REGISTER); + pr_debug("KVP: userspace daemon ver. %d connected\n", + msg->kvp_hdr.operation); kvp_register(dm_reg_value); - /* - * If we're still negotiating with the host cancel the timeout - * work to not poll the channel twice. - */ - cancel_delayed_work_sync(&kvp_host_handshake_work); - hv_poll_channel(kvp_transaction.recv_channel, kvp_poll_wrapper); - return 0; } @@ -455,7 +460,7 @@ kvp_send_key(struct work_struct *dummy) } kvp_transaction.state = HVUTIL_USERSPACE_REQ; - rc = hvutil_transport_send(hvt, message, sizeof(*message)); + rc = hvutil_transport_send(hvt, message, sizeof(*message), NULL); if (rc) { pr_debug("KVP: failed to communicate to the daemon: %d\n", rc); if (cancel_delayed_work_sync(&kvp_timeout_work)) { diff --git a/drivers/hv/hv_snapshot.c b/drivers/hv/hv_snapshot.c index 3fba14e..a670713 100644 --- a/drivers/hv/hv_snapshot.c +++ b/drivers/hv/hv_snapshot.c @@ -67,11 +67,11 @@ static const char vss_devname[] = "vmbus/hv_vss"; static __u8 *recv_buffer; static struct hvutil_transport *hvt; -static void vss_send_op(struct work_struct *dummy); static void vss_timeout_func(struct work_struct *dummy); +static void vss_handle_request(struct work_struct *dummy); static DECLARE_DELAYED_WORK(vss_timeout_work, vss_timeout_func); -static DECLARE_WORK(vss_send_op_work, vss_send_op); +static DECLARE_WORK(vss_handle_request_work, vss_handle_request); static void vss_poll_wrapper(void *channel) { @@ -95,6 +95,12 @@ static void vss_timeout_func(struct work_struct *dummy) hv_poll_channel(vss_transaction.recv_channel, vss_poll_wrapper); } +static void vss_register_done(void) +{ + hv_poll_channel(vss_transaction.recv_channel, vss_poll_wrapper); + pr_debug("VSS: userspace daemon registered\n"); +} + static int vss_handle_handshake(struct hv_vss_msg *vss_msg) { u32 our_ver = VSS_OP_REGISTER1; @@ -105,16 +111,16 @@ static int vss_handle_handshake(struct hv_vss_msg *vss_msg) dm_reg_value = VSS_OP_REGISTER; break; case VSS_OP_REGISTER1: - /* Daemon expects us to reply with our own version*/ - if (hvutil_transport_send(hvt, &our_ver, sizeof(our_ver))) + /* Daemon expects us to reply with our own version */ + if (hvutil_transport_send(hvt, &our_ver, sizeof(our_ver), + vss_register_done)) return -EFAULT; dm_reg_value = VSS_OP_REGISTER1; break; default: return -EINVAL; } - hv_poll_channel(vss_transaction.recv_channel, vss_poll_wrapper); - pr_debug("VSS: userspace daemon ver. %d registered\n", dm_reg_value); + pr_debug("VSS: userspace daemon ver. %d connected\n", dm_reg_value); return 0; } @@ -136,6 +142,11 @@ static int vss_on_msg(void *msg, int len) return vss_handle_handshake(vss_msg); } else if (vss_transaction.state == HVUTIL_USERSPACE_REQ) { vss_transaction.state = HVUTIL_USERSPACE_RECV; + + if (vss_msg->vss_hdr.operation == VSS_OP_HOT_BACKUP) + vss_transaction.msg->vss_cf.flags = + VSS_HBU_NO_AUTO_RECOVERY; + if (cancel_delayed_work_sync(&vss_timeout_work)) { vss_respond_to_host(vss_msg->error); /* Transaction is finished, reset the state. */ @@ -150,8 +161,7 @@ static int vss_on_msg(void *msg, int len) return 0; } - -static void vss_send_op(struct work_struct *dummy) +static void vss_send_op(void) { int op = vss_transaction.msg->vss_hdr.operation; int rc; @@ -168,7 +178,10 @@ static void vss_send_op(struct work_struct *dummy) vss_msg->vss_hdr.operation = op; vss_transaction.state = HVUTIL_USERSPACE_REQ; - rc = hvutil_transport_send(hvt, vss_msg, sizeof(*vss_msg)); + + schedule_delayed_work(&vss_timeout_work, VSS_USERSPACE_TIMEOUT); + + rc = hvutil_transport_send(hvt, vss_msg, sizeof(*vss_msg), NULL); if (rc) { pr_warn("VSS: failed to communicate to the daemon: %d\n", rc); if (cancel_delayed_work_sync(&vss_timeout_work)) { @@ -182,6 +195,38 @@ static void vss_send_op(struct work_struct *dummy) return; } +static void vss_handle_request(struct work_struct *dummy) +{ + switch (vss_transaction.msg->vss_hdr.operation) { + /* + * Initiate a "freeze/thaw" operation in the guest. + * We respond to the host once the operation is complete. + * + * We send the message to the user space daemon and the operation is + * performed in the daemon. + */ + case VSS_OP_THAW: + case VSS_OP_FREEZE: + case VSS_OP_HOT_BACKUP: + if (vss_transaction.state < HVUTIL_READY) { + /* Userspace is not registered yet */ + vss_respond_to_host(HV_E_FAIL); + return; + } + vss_transaction.state = HVUTIL_HOSTMSG_RECEIVED; + vss_send_op(); + return; + case VSS_OP_GET_DM_INFO: + vss_transaction.msg->dm_info.flags = 0; + break; + default: + break; + } + + vss_respond_to_host(0); + hv_poll_channel(vss_transaction.recv_channel, vss_poll_wrapper); +} + /* * Send a response back to the host. */ @@ -266,48 +311,8 @@ void hv_vss_onchannelcallback(void *context) vss_transaction.recv_req_id = requestid; vss_transaction.msg = (struct hv_vss_msg *)vss_msg; - switch (vss_msg->vss_hdr.operation) { - /* - * Initiate a "freeze/thaw" - * operation in the guest. - * We respond to the host once - * the operation is complete. - * - * We send the message to the - * user space daemon and the - * operation is performed in - * the daemon. - */ - case VSS_OP_FREEZE: - case VSS_OP_THAW: - if (vss_transaction.state < HVUTIL_READY) { - /* Userspace is not registered yet */ - vss_respond_to_host(HV_E_FAIL); - return; - } - vss_transaction.state = HVUTIL_HOSTMSG_RECEIVED; - schedule_work(&vss_send_op_work); - schedule_delayed_work(&vss_timeout_work, - VSS_USERSPACE_TIMEOUT); - return; - - case VSS_OP_HOT_BACKUP: - vss_msg->vss_cf.flags = - VSS_HBU_NO_AUTO_RECOVERY; - vss_respond_to_host(0); - return; - - case VSS_OP_GET_DM_INFO: - vss_msg->dm_info.flags = 0; - vss_respond_to_host(0); - return; - - default: - vss_respond_to_host(0); - return; - - } - + schedule_work(&vss_handle_request_work); + return; } icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION @@ -358,6 +363,6 @@ void hv_vss_deinit(void) { vss_transaction.state = HVUTIL_DEVICE_DYING; cancel_delayed_work_sync(&vss_timeout_work); - cancel_work_sync(&vss_send_op_work); + cancel_work_sync(&vss_handle_request_work); hvutil_transport_destroy(hvt); } diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index d5acaa2..4aa3cb6 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -34,22 +34,25 @@ #define SD_MINOR 0 #define SD_VERSION (SD_MAJOR << 16 | SD_MINOR) -#define SD_WS2008_MAJOR 1 -#define SD_WS2008_VERSION (SD_WS2008_MAJOR << 16 | SD_MINOR) +#define SD_MAJOR_1 1 +#define SD_VERSION_1 (SD_MAJOR_1 << 16 | SD_MINOR) -#define TS_MAJOR 3 +#define TS_MAJOR 4 #define TS_MINOR 0 #define TS_VERSION (TS_MAJOR << 16 | TS_MINOR) -#define TS_WS2008_MAJOR 1 -#define TS_WS2008_VERSION (TS_WS2008_MAJOR << 16 | TS_MINOR) +#define TS_MAJOR_1 1 +#define TS_VERSION_1 (TS_MAJOR_1 << 16 | TS_MINOR) + +#define TS_MAJOR_3 3 +#define TS_VERSION_3 (TS_MAJOR_3 << 16 | TS_MINOR) #define HB_MAJOR 3 -#define HB_MINOR 0 +#define HB_MINOR 0 #define HB_VERSION (HB_MAJOR << 16 | HB_MINOR) -#define HB_WS2008_MAJOR 1 -#define HB_WS2008_VERSION (HB_WS2008_MAJOR << 16 | HB_MINOR) +#define HB_MAJOR_1 1 +#define HB_VERSION_1 (HB_MAJOR_1 << 16 | HB_MINOR) static int sd_srv_version; static int ts_srv_version; @@ -61,9 +64,14 @@ static struct hv_util_service util_shutdown = { .util_cb = shutdown_onchannelcallback, }; +static int hv_timesync_init(struct hv_util_service *srv); +static void hv_timesync_deinit(void); + static void timesync_onchannelcallback(void *context); static struct hv_util_service util_timesynch = { .util_cb = timesync_onchannelcallback, + .util_init = hv_timesync_init, + .util_deinit = hv_timesync_deinit, }; static void heartbeat_onchannelcallback(void *context); @@ -161,35 +169,43 @@ static void shutdown_onchannelcallback(void *context) } /* - * Set guest time to host UTC time. - */ -static inline void do_adj_guesttime(u64 hosttime) -{ - s64 host_tns; - struct timespec host_ts; - - host_tns = (hosttime - WLTIMEDELTA) * 100; - host_ts = ns_to_timespec(host_tns); - - do_settimeofday(&host_ts); -} - -/* * Set the host time in a process context. */ struct adj_time_work { struct work_struct work; u64 host_time; + u64 ref_time; + u8 flags; }; static void hv_set_host_time(struct work_struct *work) { struct adj_time_work *wrk; + s64 host_tns; + u64 newtime; + struct timespec host_ts; wrk = container_of(work, struct adj_time_work, work); - do_adj_guesttime(wrk->host_time); - kfree(wrk); + + newtime = wrk->host_time; + if (ts_srv_version > TS_VERSION_3) { + /* + * Some latency has been introduced since Hyper-V generated + * its time sample. Take that latency into account before + * using TSC reference time sample from Hyper-V. + * + * This sample is given by TimeSync v4 and above hosts. + */ + u64 current_tick; + + rdmsrl(HV_X64_MSR_TIME_REF_COUNT, current_tick); + newtime += (current_tick - wrk->ref_time); + } + host_tns = (newtime - WLTIMEDELTA) * 100; + host_ts = ns_to_timespec(host_tns); + + do_settimeofday(&host_ts); } /* @@ -198,33 +214,31 @@ static void hv_set_host_time(struct work_struct *work) * ICTIMESYNCFLAG_SYNC flag bit indicates reboot, restore events of the VM. * After reboot the flag ICTIMESYNCFLAG_SYNC is included in the first time * message after the timesync channel is opened. Since the hv_utils module is - * loaded after hv_vmbus, the first message is usually missed. The other - * thing is, systime is automatically set to emulated hardware clock which may - * not be UTC time or in the same time zone. So, to override these effects, we - * use the first 50 time samples for initial system time setting. + * loaded after hv_vmbus, the first message is usually missed. This bit is + * considered a hard request to discipline the clock. + * + * ICTIMESYNCFLAG_SAMPLE bit indicates a time sample from host. This is + * typically used as a hint to the guest. The guest is under no obligation + * to discipline the clock. */ -static inline void adj_guesttime(u64 hosttime, u8 flags) +static struct adj_time_work wrk; +static inline void adj_guesttime(u64 hosttime, u64 reftime, u8 flags) { - struct adj_time_work *wrk; - static s32 scnt = 50; - wrk = kmalloc(sizeof(struct adj_time_work), GFP_ATOMIC); - if (wrk == NULL) + /* + * This check is safe since we are executing in the + * interrupt context and time synch messages arre always + * delivered on the same CPU. + */ + if (work_pending(&wrk.work)) return; - wrk->host_time = hosttime; - if ((flags & ICTIMESYNCFLAG_SYNC) != 0) { - INIT_WORK(&wrk->work, hv_set_host_time); - schedule_work(&wrk->work); - return; + wrk.host_time = hosttime; + wrk.ref_time = reftime; + wrk.flags = flags; + if ((flags & (ICTIMESYNCFLAG_SYNC | ICTIMESYNCFLAG_SAMPLE)) != 0) { + schedule_work(&wrk.work); } - - if ((flags & ICTIMESYNCFLAG_SAMPLE) != 0 && scnt > 0) { - scnt--; - INIT_WORK(&wrk->work, hv_set_host_time); - schedule_work(&wrk->work); - } else - kfree(wrk); } /* @@ -237,6 +251,7 @@ static void timesync_onchannelcallback(void *context) u64 requestid; struct icmsg_hdr *icmsghdrp; struct ictimesync_data *timedatap; + struct ictimesync_ref_data *refdata; u8 *time_txf_buf = util_timesynch.recv_buffer; struct icmsg_negotiate *negop = NULL; @@ -252,11 +267,27 @@ static void timesync_onchannelcallback(void *context) time_txf_buf, util_fw_version, ts_srv_version); + pr_info("Using TimeSync version %d.%d\n", + ts_srv_version >> 16, ts_srv_version & 0xFFFF); } else { - timedatap = (struct ictimesync_data *)&time_txf_buf[ - sizeof(struct vmbuspipe_hdr) + - sizeof(struct icmsg_hdr)]; - adj_guesttime(timedatap->parenttime, timedatap->flags); + if (ts_srv_version > TS_VERSION_3) { + refdata = (struct ictimesync_ref_data *) + &time_txf_buf[ + sizeof(struct vmbuspipe_hdr) + + sizeof(struct icmsg_hdr)]; + + adj_guesttime(refdata->parenttime, + refdata->vmreferencetime, + refdata->flags); + } else { + timedatap = (struct ictimesync_data *) + &time_txf_buf[ + sizeof(struct vmbuspipe_hdr) + + sizeof(struct icmsg_hdr)]; + adj_guesttime(timedatap->parenttime, + 0, + timedatap->flags); + } } icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION @@ -350,16 +381,21 @@ static int util_probe(struct hv_device *dev, switch (vmbus_proto_version) { case (VERSION_WS2008): util_fw_version = UTIL_WS2K8_FW_VERSION; - sd_srv_version = SD_WS2008_VERSION; - ts_srv_version = TS_WS2008_VERSION; - hb_srv_version = HB_WS2008_VERSION; + sd_srv_version = SD_VERSION_1; + ts_srv_version = TS_VERSION_1; + hb_srv_version = HB_VERSION_1; break; - - default: + case(VERSION_WIN10): util_fw_version = UTIL_FW_VERSION; sd_srv_version = SD_VERSION; ts_srv_version = TS_VERSION; hb_srv_version = HB_VERSION; + break; + default: + util_fw_version = UTIL_FW_VERSION; + sd_srv_version = SD_VERSION; + ts_srv_version = TS_VERSION_3; + hb_srv_version = HB_VERSION; } ret = vmbus_open(dev->channel, 4 * PAGE_SIZE, 4 * PAGE_SIZE, NULL, 0, @@ -427,6 +463,17 @@ static struct hv_driver util_drv = { .remove = util_remove, }; +static int hv_timesync_init(struct hv_util_service *srv) +{ + INIT_WORK(&wrk.work, hv_set_host_time); + return 0; +} + +static void hv_timesync_deinit(void) +{ + cancel_work_sync(&wrk.work); +} + static int __init init_hyperv_utils(void) { pr_info("Registering HyperV Utility Driver\n"); diff --git a/drivers/hv/hv_utils_transport.c b/drivers/hv/hv_utils_transport.c index 9a9983f..c235a95 100644 --- a/drivers/hv/hv_utils_transport.c +++ b/drivers/hv/hv_utils_transport.c @@ -72,6 +72,10 @@ static ssize_t hvt_op_read(struct file *file, char __user *buf, hvt->outmsg = NULL; hvt->outmsg_len = 0; + if (hvt->on_read) + hvt->on_read(); + hvt->on_read = NULL; + out_unlock: mutex_unlock(&hvt->lock); return ret; @@ -219,7 +223,8 @@ static void hvt_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp) mutex_unlock(&hvt->lock); } -int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len) +int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len, + void (*on_read_cb)(void)) { struct cn_msg *cn_msg; int ret = 0; @@ -237,6 +242,13 @@ int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len) memcpy(cn_msg->data, msg, len); ret = cn_netlink_send(cn_msg, 0, 0, GFP_ATOMIC); kfree(cn_msg); + /* + * We don't know when netlink messages are delivered but unlike + * in CHARDEV mode we're not blocked and we can send next + * messages right away. + */ + if (on_read_cb) + on_read_cb(); return ret; } /* HVUTIL_TRANSPORT_CHARDEV */ @@ -255,6 +267,7 @@ int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len) if (hvt->outmsg) { memcpy(hvt->outmsg, msg, len); hvt->outmsg_len = len; + hvt->on_read = on_read_cb; wake_up_interruptible(&hvt->outmsg_q); } else ret = -ENOMEM; diff --git a/drivers/hv/hv_utils_transport.h b/drivers/hv/hv_utils_transport.h index 06254a1..d98f522 100644 --- a/drivers/hv/hv_utils_transport.h +++ b/drivers/hv/hv_utils_transport.h @@ -36,6 +36,7 @@ struct hvutil_transport { struct list_head list; /* hvt_list */ int (*on_msg)(void *, int); /* callback on new user message */ void (*on_reset)(void); /* callback when userspace drops */ + void (*on_read)(void); /* callback on message read */ u8 *outmsg; /* message to the userspace */ int outmsg_len; /* its length */ wait_queue_head_t outmsg_q; /* poll/read wait queue */ @@ -46,7 +47,8 @@ struct hvutil_transport *hvutil_transport_init(const char *name, u32 cn_idx, u32 cn_val, int (*on_msg)(void *, int), void (*on_reset)(void)); -int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len); +int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len, + void (*on_read_cb)(void)); void hvutil_transport_destroy(struct hvutil_transport *hvt); #endif /* _HV_UTILS_TRANSPORT_H */ diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 718b5c7..a5b4442 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -495,7 +495,7 @@ struct hv_ring_buffer_debug_info { extern int hv_init(void); -extern void hv_cleanup(void); +extern void hv_cleanup(bool crash); extern int hv_post_message(union hv_connection_id connection_id, enum hv_message_type message_type, @@ -522,14 +522,15 @@ extern unsigned int host_info_edx; /* Interface */ -int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, void *buffer, - u32 buflen); +int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, + struct page *pages, u32 pagecnt); void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info); int hv_ringbuffer_write(struct hv_ring_buffer_info *ring_info, struct kvec *kv_list, - u32 kv_count, bool *signal, bool lock); + u32 kv_count, bool *signal, bool lock, + enum hv_signal_policy policy); int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer, u32 buflen, u32 *buffer_actual_len, diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index fe586bf..08043da 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -27,6 +27,8 @@ #include <linux/mm.h> #include <linux/hyperv.h> #include <linux/uio.h> +#include <linux/vmalloc.h> +#include <linux/slab.h> #include "hyperv_vmbus.h" @@ -66,12 +68,20 @@ u32 hv_end_read(struct hv_ring_buffer_info *rbi) * arrived. */ -static bool hv_need_to_signal(u32 old_write, struct hv_ring_buffer_info *rbi) +static bool hv_need_to_signal(u32 old_write, struct hv_ring_buffer_info *rbi, + enum hv_signal_policy policy) { virt_mb(); if (READ_ONCE(rbi->ring_buffer->interrupt_mask)) return false; + /* + * When the client wants to control signaling, + * we only honour the host interrupt mask. + */ + if (policy == HV_SIGNAL_POLICY_EXPLICIT) + return true; + /* check interrupt_mask before read_index */ virt_rmb(); /* @@ -162,18 +172,7 @@ static u32 hv_copyfrom_ringbuffer( void *ring_buffer = hv_get_ring_buffer(ring_info); u32 ring_buffer_size = hv_get_ring_buffersize(ring_info); - u32 frag_len; - - /* wrap-around detected at the src */ - if (destlen > ring_buffer_size - start_read_offset) { - frag_len = ring_buffer_size - start_read_offset; - - memcpy(dest, ring_buffer + start_read_offset, frag_len); - memcpy(dest + frag_len, ring_buffer, destlen - frag_len); - } else - - memcpy(dest, ring_buffer + start_read_offset, destlen); - + memcpy(dest, ring_buffer + start_read_offset, destlen); start_read_offset += destlen; start_read_offset %= ring_buffer_size; @@ -194,15 +193,8 @@ static u32 hv_copyto_ringbuffer( { void *ring_buffer = hv_get_ring_buffer(ring_info); u32 ring_buffer_size = hv_get_ring_buffersize(ring_info); - u32 frag_len; - /* wrap-around detected! */ - if (srclen > ring_buffer_size - start_write_offset) { - frag_len = ring_buffer_size - start_write_offset; - memcpy(ring_buffer + start_write_offset, src, frag_len); - memcpy(ring_buffer, src + frag_len, srclen - frag_len); - } else - memcpy(ring_buffer + start_write_offset, src, srclen); + memcpy(ring_buffer + start_write_offset, src, srclen); start_write_offset += srclen; start_write_offset %= ring_buffer_size; @@ -235,22 +227,46 @@ void hv_ringbuffer_get_debuginfo(struct hv_ring_buffer_info *ring_info, /* Initialize the ring buffer. */ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, - void *buffer, u32 buflen) + struct page *pages, u32 page_cnt) { - if (sizeof(struct hv_ring_buffer) != PAGE_SIZE) - return -EINVAL; + int i; + struct page **pages_wraparound; + + BUILD_BUG_ON((sizeof(struct hv_ring_buffer) != PAGE_SIZE)); memset(ring_info, 0, sizeof(struct hv_ring_buffer_info)); - ring_info->ring_buffer = (struct hv_ring_buffer *)buffer; + /* + * First page holds struct hv_ring_buffer, do wraparound mapping for + * the rest. + */ + pages_wraparound = kzalloc(sizeof(struct page *) * (page_cnt * 2 - 1), + GFP_KERNEL); + if (!pages_wraparound) + return -ENOMEM; + + pages_wraparound[0] = pages; + for (i = 0; i < 2 * (page_cnt - 1); i++) + pages_wraparound[i + 1] = &pages[i % (page_cnt - 1) + 1]; + + ring_info->ring_buffer = (struct hv_ring_buffer *) + vmap(pages_wraparound, page_cnt * 2 - 1, VM_MAP, PAGE_KERNEL); + + kfree(pages_wraparound); + + + if (!ring_info->ring_buffer) + return -ENOMEM; + ring_info->ring_buffer->read_index = ring_info->ring_buffer->write_index = 0; /* Set the feature bit for enabling flow control. */ ring_info->ring_buffer->feature_bits.value = 1; - ring_info->ring_size = buflen; - ring_info->ring_datasize = buflen - sizeof(struct hv_ring_buffer); + ring_info->ring_size = page_cnt << PAGE_SHIFT; + ring_info->ring_datasize = ring_info->ring_size - + sizeof(struct hv_ring_buffer); spin_lock_init(&ring_info->ring_lock); @@ -260,11 +276,13 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, /* Cleanup the ring buffer. */ void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info) { + vunmap(ring_info->ring_buffer); } /* Write to the ring buffer. */ int hv_ringbuffer_write(struct hv_ring_buffer_info *outring_info, - struct kvec *kv_list, u32 kv_count, bool *signal, bool lock) + struct kvec *kv_list, u32 kv_count, bool *signal, bool lock, + enum hv_signal_policy policy) { int i = 0; u32 bytes_avail_towrite; @@ -326,7 +344,7 @@ int hv_ringbuffer_write(struct hv_ring_buffer_info *outring_info, if (lock) spin_unlock_irqrestore(&outring_info->ring_lock, flags); - *signal = hv_need_to_signal(old_write, outring_info); + *signal = hv_need_to_signal(old_write, outring_info, policy); return 0; } diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index e82f7e1..a259e18 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -105,8 +105,8 @@ static struct notifier_block hyperv_panic_block = { static const char *fb_mmio_name = "fb_range"; static struct resource *fb_mmio; -struct resource *hyperv_mmio; -DEFINE_SEMAPHORE(hyperv_mmio_lock); +static struct resource *hyperv_mmio; +static DEFINE_SEMAPHORE(hyperv_mmio_lock); static int vmbus_exists(void) { @@ -874,7 +874,7 @@ err_alloc: bus_unregister(&hv_bus); err_cleanup: - hv_cleanup(); + hv_cleanup(false); return ret; } @@ -961,8 +961,8 @@ int vmbus_device_register(struct hv_device *child_device_obj) { int ret = 0; - dev_set_name(&child_device_obj->device, "vmbus_%d", - child_device_obj->channel->id); + dev_set_name(&child_device_obj->device, "vmbus-%pUl", + child_device_obj->channel->offermsg.offer.if_instance.b); child_device_obj->device.bus = &hv_bus; child_device_obj->device.parent = &hv_acpi_dev->dev; @@ -1326,7 +1326,7 @@ static void hv_kexec_handler(void) vmbus_initiate_unload(false); for_each_online_cpu(cpu) smp_call_function_single(cpu, hv_synic_cleanup, NULL, 1); - hv_cleanup(); + hv_cleanup(false); }; static void hv_crash_handler(struct pt_regs *regs) @@ -1338,7 +1338,7 @@ static void hv_crash_handler(struct pt_regs *regs) * for kdump. */ hv_synic_cleanup(NULL); - hv_cleanup(); + hv_cleanup(true); }; static int __init hv_acpi_init(void) @@ -1398,7 +1398,7 @@ static void __exit vmbus_exit(void) &hyperv_panic_block); } bus_unregister(&hv_bus); - hv_cleanup(); + hv_cleanup(false); for_each_online_cpu(cpu) { tasklet_kill(hv_context.event_dpc[cpu]); smp_call_function_single(cpu, hv_synic_cleanup, NULL, 1); diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index 4d20b0b..d7325c65 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -184,8 +184,7 @@ static void etb_disable_hw(struct etb_drvdata *drvdata) if (coresight_timeout(drvdata->base, ETB_FFCR, ETB_FFCR_BIT, 0)) { dev_err(drvdata->dev, - "timeout observed when probing at offset %#x\n", - ETB_FFCR); + "timeout while waiting for completion of Manual Flush\n"); } /* disable trace capture */ @@ -193,8 +192,7 @@ static void etb_disable_hw(struct etb_drvdata *drvdata) if (coresight_timeout(drvdata->base, ETB_FFSR, ETB_FFSR_BIT, 1)) { dev_err(drvdata->dev, - "timeout observed when probing at offset %#x\n", - ETB_FFCR); + "timeout while waiting for Formatter to Stop\n"); } CS_LOCK(drvdata->base); @@ -561,7 +559,7 @@ static const struct file_operations etb_fops = { }; #define coresight_etb10_simple_func(name, offset) \ - coresight_simple_func(struct etb_drvdata, name, offset) + coresight_simple_func(struct etb_drvdata, NULL, name, offset) coresight_etb10_simple_func(rdp, ETB_RAM_DEPTH_REG); coresight_etb10_simple_func(sts, ETB_STATUS_REG); @@ -638,7 +636,7 @@ static int etb_probe(struct amba_device *adev, const struct amba_id *id) struct coresight_platform_data *pdata = NULL; struct etb_drvdata *drvdata; struct resource *res = &adev->res; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = adev->dev.of_node; if (np) { @@ -684,17 +682,13 @@ static int etb_probe(struct amba_device *adev, const struct amba_id *id) return -ENOMEM; } - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) - return -ENOMEM; - - desc->type = CORESIGHT_DEV_TYPE_SINK; - desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER; - desc->ops = &etb_cs_ops; - desc->pdata = pdata; - desc->dev = dev; - desc->groups = coresight_etb_groups; - drvdata->csdev = coresight_register(desc); + desc.type = CORESIGHT_DEV_TYPE_SINK; + desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER; + desc.ops = &etb_cs_ops; + desc.pdata = pdata; + desc.dev = dev; + desc.groups = coresight_etb_groups; + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) return PTR_ERR(drvdata->csdev); diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index 755125f..2cd7c71 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -27,6 +27,7 @@ #include <linux/types.h> #include <linux/workqueue.h> +#include "coresight-etm-perf.h" #include "coresight-priv.h" static struct pmu etm_pmu; @@ -71,14 +72,48 @@ static const struct attribute_group *etm_pmu_attr_groups[] = { static void etm_event_read(struct perf_event *event) {} -static int etm_event_init(struct perf_event *event) +static int etm_addr_filters_alloc(struct perf_event *event) { - if (event->attr.type != etm_pmu.type) - return -ENOENT; + struct etm_filters *filters; + int node = event->cpu == -1 ? -1 : cpu_to_node(event->cpu); + + filters = kzalloc_node(sizeof(struct etm_filters), GFP_KERNEL, node); + if (!filters) + return -ENOMEM; + + if (event->parent) + memcpy(filters, event->parent->hw.addr_filters, + sizeof(*filters)); + + event->hw.addr_filters = filters; return 0; } +static void etm_event_destroy(struct perf_event *event) +{ + kfree(event->hw.addr_filters); + event->hw.addr_filters = NULL; +} + +static int etm_event_init(struct perf_event *event) +{ + int ret = 0; + + if (event->attr.type != etm_pmu.type) { + ret = -ENOENT; + goto out; + } + + ret = etm_addr_filters_alloc(event); + if (ret) + goto out; + + event->destroy = etm_event_destroy; +out: + return ret; +} + static void free_event_data(struct work_struct *work) { int cpu; @@ -100,7 +135,7 @@ static void free_event_data(struct work_struct *work) } for_each_cpu(cpu, mask) { - if (event_data->path[cpu]) + if (!(IS_ERR_OR_NULL(event_data->path[cpu]))) coresight_release_path(event_data->path[cpu]); } @@ -185,7 +220,7 @@ static void *etm_setup_aux(int event_cpu, void **pages, * referenced later when the path is actually needed. */ event_data->path[cpu] = coresight_build_path(csdev); - if (!event_data->path[cpu]) + if (IS_ERR(event_data->path[cpu])) goto err; } @@ -258,7 +293,7 @@ static void etm_event_start(struct perf_event *event, int flags) event->hw.state = 0; /* Finally enable the tracer */ - if (source_ops(csdev)->enable(csdev, &event->attr, CS_MODE_PERF)) + if (source_ops(csdev)->enable(csdev, event, CS_MODE_PERF)) goto fail_end_stop; out: @@ -291,7 +326,7 @@ static void etm_event_stop(struct perf_event *event, int mode) return; /* stop tracer */ - source_ops(csdev)->disable(csdev); + source_ops(csdev)->disable(csdev, event); /* tell the core */ event->hw.state = PERF_HES_STOPPED; @@ -342,6 +377,87 @@ static void etm_event_del(struct perf_event *event, int mode) etm_event_stop(event, PERF_EF_UPDATE); } +static int etm_addr_filters_validate(struct list_head *filters) +{ + bool range = false, address = false; + int index = 0; + struct perf_addr_filter *filter; + + list_for_each_entry(filter, filters, entry) { + /* + * No need to go further if there's no more + * room for filters. + */ + if (++index > ETM_ADDR_CMP_MAX) + return -EOPNOTSUPP; + + /* + * As taken from the struct perf_addr_filter documentation: + * @range: 1: range, 0: address + * + * At this time we don't allow range and start/stop filtering + * to cohabitate, they have to be mutually exclusive. + */ + if ((filter->range == 1) && address) + return -EOPNOTSUPP; + + if ((filter->range == 0) && range) + return -EOPNOTSUPP; + + /* + * For range filtering, the second address in the address + * range comparator needs to be higher than the first. + * Invalid otherwise. + */ + if (filter->range && filter->size == 0) + return -EINVAL; + + /* + * Everything checks out with this filter, record what we've + * received before moving on to the next one. + */ + if (filter->range) + range = true; + else + address = true; + } + + return 0; +} + +static void etm_addr_filters_sync(struct perf_event *event) +{ + struct perf_addr_filters_head *head = perf_event_addr_filters(event); + unsigned long start, stop, *offs = event->addr_filters_offs; + struct etm_filters *filters = event->hw.addr_filters; + struct etm_filter *etm_filter; + struct perf_addr_filter *filter; + int i = 0; + + list_for_each_entry(filter, &head->list, entry) { + start = filter->offset + offs[i]; + stop = start + filter->size; + etm_filter = &filters->etm_filter[i]; + + if (filter->range == 1) { + etm_filter->start_addr = start; + etm_filter->stop_addr = stop; + etm_filter->type = ETM_ADDR_TYPE_RANGE; + } else { + if (filter->filter == 1) { + etm_filter->start_addr = start; + etm_filter->type = ETM_ADDR_TYPE_START; + } else { + etm_filter->stop_addr = stop; + etm_filter->type = ETM_ADDR_TYPE_STOP; + } + } + i++; + } + + filters->nr_filters = i; +} + int etm_perf_symlink(struct coresight_device *csdev, bool link) { char entry[sizeof("cpu9999999")]; @@ -371,18 +487,21 @@ static int __init etm_perf_init(void) { int ret; - etm_pmu.capabilities = PERF_PMU_CAP_EXCLUSIVE; - - etm_pmu.attr_groups = etm_pmu_attr_groups; - etm_pmu.task_ctx_nr = perf_sw_context; - etm_pmu.read = etm_event_read; - etm_pmu.event_init = etm_event_init; - etm_pmu.setup_aux = etm_setup_aux; - etm_pmu.free_aux = etm_free_aux; - etm_pmu.start = etm_event_start; - etm_pmu.stop = etm_event_stop; - etm_pmu.add = etm_event_add; - etm_pmu.del = etm_event_del; + etm_pmu.capabilities = PERF_PMU_CAP_EXCLUSIVE; + + etm_pmu.attr_groups = etm_pmu_attr_groups; + etm_pmu.task_ctx_nr = perf_sw_context; + etm_pmu.read = etm_event_read; + etm_pmu.event_init = etm_event_init; + etm_pmu.setup_aux = etm_setup_aux; + etm_pmu.free_aux = etm_free_aux; + etm_pmu.start = etm_event_start; + etm_pmu.stop = etm_event_stop; + etm_pmu.add = etm_event_add; + etm_pmu.del = etm_event_del; + etm_pmu.addr_filters_sync = etm_addr_filters_sync; + etm_pmu.addr_filters_validate = etm_addr_filters_validate; + etm_pmu.nr_addr_filters = ETM_ADDR_CMP_MAX; ret = perf_pmu_register(&etm_pmu, CORESIGHT_ETM_PMU_NAME, -1); if (ret == 0) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.h b/drivers/hwtracing/coresight/coresight-etm-perf.h index 87f5a13..3ffc9fe 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.h +++ b/drivers/hwtracing/coresight/coresight-etm-perf.h @@ -18,8 +18,42 @@ #ifndef _CORESIGHT_ETM_PERF_H #define _CORESIGHT_ETM_PERF_H +#include "coresight-priv.h" + struct coresight_device; +/* + * In both ETMv3 and v4 the maximum number of address comparator implentable + * is 8. The actual number is implementation specific and will be checked + * when filters are applied. + */ +#define ETM_ADDR_CMP_MAX 8 + +/** + * struct etm_filter - single instruction range or start/stop configuration. + * @start_addr: The address to start tracing on. + * @stop_addr: The address to stop tracing on. + * @type: Is this a range or start/stop filter. + */ +struct etm_filter { + unsigned long start_addr; + unsigned long stop_addr; + enum etm_addr_type type; +}; + +/** + * struct etm_filters - set of filters for a session + * @etm_filter: All the filters for this session. + * @nr_filters: Number of filters + * @ssstatus: Status of the start/stop logic. + */ +struct etm_filters { + struct etm_filter etm_filter[ETM_ADDR_CMP_MAX]; + unsigned int nr_filters; + bool ssstatus; +}; + + #ifdef CONFIG_CORESIGHT int etm_perf_symlink(struct coresight_device *csdev, bool link); diff --git a/drivers/hwtracing/coresight/coresight-etm.h b/drivers/hwtracing/coresight/coresight-etm.h index 51597cb..4a18ee4 100644 --- a/drivers/hwtracing/coresight/coresight-etm.h +++ b/drivers/hwtracing/coresight/coresight-etm.h @@ -259,14 +259,6 @@ struct etm_drvdata { struct etm_config config; }; -enum etm_addr_type { - ETM_ADDR_TYPE_NONE, - ETM_ADDR_TYPE_SINGLE, - ETM_ADDR_TYPE_RANGE, - ETM_ADDR_TYPE_START, - ETM_ADDR_TYPE_STOP, -}; - static inline void etm_writel(struct etm_drvdata *drvdata, u32 val, u32 off) { diff --git a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c index 02d4b62..e9b0719 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c @@ -18,6 +18,7 @@ #include <linux/pm_runtime.h> #include <linux/sysfs.h> #include "coresight-etm.h" +#include "coresight-priv.h" static ssize_t nr_addr_cmp_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -1222,7 +1223,7 @@ static struct attribute *coresight_etm_attrs[] = { }; #define coresight_etm3x_simple_func(name, offset) \ - coresight_simple_func(struct etm_drvdata, name, offset) + coresight_simple_func(struct etm_drvdata, NULL, name, offset) coresight_etm3x_simple_func(etmccr, ETMCCR); coresight_etm3x_simple_func(etmccer, ETMCCER); diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c index 2de4cad..3fe368b 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x.c +++ b/drivers/hwtracing/coresight/coresight-etm3x.c @@ -311,9 +311,10 @@ void etm_config_trace_mode(struct etm_config *config) #define ETM3X_SUPPORTED_OPTIONS (ETMCR_CYC_ACC | ETMCR_TIMESTAMP_EN) static int etm_parse_event_config(struct etm_drvdata *drvdata, - struct perf_event_attr *attr) + struct perf_event *event) { struct etm_config *config = &drvdata->config; + struct perf_event_attr *attr = &event->attr; if (!attr) return -EINVAL; @@ -459,7 +460,7 @@ static int etm_trace_id(struct coresight_device *csdev) } static int etm_enable_perf(struct coresight_device *csdev, - struct perf_event_attr *attr) + struct perf_event *event) { struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); @@ -467,7 +468,7 @@ static int etm_enable_perf(struct coresight_device *csdev, return -EINVAL; /* Configure the tracer based on the session's specifics */ - etm_parse_event_config(drvdata, attr); + etm_parse_event_config(drvdata, event); /* And enable it */ etm_enable_hw(drvdata); @@ -504,7 +505,7 @@ err: } static int etm_enable(struct coresight_device *csdev, - struct perf_event_attr *attr, u32 mode) + struct perf_event *event, u32 mode) { int ret; u32 val; @@ -521,7 +522,7 @@ static int etm_enable(struct coresight_device *csdev, ret = etm_enable_sysfs(csdev); break; case CS_MODE_PERF: - ret = etm_enable_perf(csdev, attr); + ret = etm_enable_perf(csdev, event); break; default: ret = -EINVAL; @@ -601,7 +602,8 @@ static void etm_disable_sysfs(struct coresight_device *csdev) dev_info(drvdata->dev, "ETM tracing disabled\n"); } -static void etm_disable(struct coresight_device *csdev) +static void etm_disable(struct coresight_device *csdev, + struct perf_event *event) { u32 mode; struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); @@ -756,13 +758,9 @@ static int etm_probe(struct amba_device *adev, const struct amba_id *id) struct coresight_platform_data *pdata = NULL; struct etm_drvdata *drvdata; struct resource *res = &adev->res; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = adev->dev.of_node; - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) - return -ENOMEM; - drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); if (!drvdata) return -ENOMEM; @@ -825,13 +823,13 @@ static int etm_probe(struct amba_device *adev, const struct amba_id *id) etm_init_trace_id(drvdata); etm_set_default(&drvdata->config); - desc->type = CORESIGHT_DEV_TYPE_SOURCE; - desc->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC; - desc->ops = &etm_cs_ops; - desc->pdata = pdata; - desc->dev = dev; - desc->groups = coresight_etm_groups; - drvdata->csdev = coresight_register(desc); + desc.type = CORESIGHT_DEV_TYPE_SOURCE; + desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC; + desc.ops = &etm_cs_ops; + desc.pdata = pdata; + desc.dev = dev; + desc.groups = coresight_etm_groups; + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); goto err_arch_supported; @@ -893,6 +891,11 @@ static struct amba_id etm_ids[] = { .mask = 0x0003ffff, .data = "ETM 3.3", }, + { /* ETM 3.5 - Cortex-A5 */ + .id = 0x0003b955, + .mask = 0x0003ffff, + .data = "ETM 3.5", + }, { /* ETM 3.5 */ .id = 0x0003b956, .mask = 0x0003ffff, diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c index 7c84308..b9b1e9c 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c @@ -18,6 +18,7 @@ #include <linux/pm_runtime.h> #include <linux/sysfs.h> #include "coresight-etm4x.h" +#include "coresight-priv.h" static int etm4_set_mode_exclude(struct etmv4_drvdata *drvdata, bool exclude) { @@ -2039,15 +2040,42 @@ static struct attribute *coresight_etmv4_attrs[] = { NULL, }; +struct etmv4_reg { + void __iomem *addr; + u32 data; +}; + +static void do_smp_cross_read(void *data) +{ + struct etmv4_reg *reg = data; + + reg->data = readl_relaxed(reg->addr); +} + +static u32 etmv4_cross_read(const struct device *dev, u32 offset) +{ + struct etmv4_drvdata *drvdata = dev_get_drvdata(dev); + struct etmv4_reg reg; + + reg.addr = drvdata->base + offset; + /* + * smp cross call ensures the CPU will be powered up before + * accessing the ETMv4 trace core registers + */ + smp_call_function_single(drvdata->cpu, do_smp_cross_read, ®, 1); + return reg.data; +} + #define coresight_etm4x_simple_func(name, offset) \ - coresight_simple_func(struct etmv4_drvdata, name, offset) + coresight_simple_func(struct etmv4_drvdata, NULL, name, offset) + +#define coresight_etm4x_cross_read(name, offset) \ + coresight_simple_func(struct etmv4_drvdata, etmv4_cross_read, \ + name, offset) -coresight_etm4x_simple_func(trcoslsr, TRCOSLSR); coresight_etm4x_simple_func(trcpdcr, TRCPDCR); coresight_etm4x_simple_func(trcpdsr, TRCPDSR); coresight_etm4x_simple_func(trclsr, TRCLSR); -coresight_etm4x_simple_func(trcconfig, TRCCONFIGR); -coresight_etm4x_simple_func(trctraceid, TRCTRACEIDR); coresight_etm4x_simple_func(trcauthstatus, TRCAUTHSTATUS); coresight_etm4x_simple_func(trcdevid, TRCDEVID); coresight_etm4x_simple_func(trcdevtype, TRCDEVTYPE); @@ -2055,6 +2083,9 @@ coresight_etm4x_simple_func(trcpidr0, TRCPIDR0); coresight_etm4x_simple_func(trcpidr1, TRCPIDR1); coresight_etm4x_simple_func(trcpidr2, TRCPIDR2); coresight_etm4x_simple_func(trcpidr3, TRCPIDR3); +coresight_etm4x_cross_read(trcoslsr, TRCOSLSR); +coresight_etm4x_cross_read(trcconfig, TRCCONFIGR); +coresight_etm4x_cross_read(trctraceid, TRCTRACEIDR); static struct attribute *coresight_etmv4_mgmt_attrs[] = { &dev_attr_trcoslsr.attr, @@ -2073,19 +2104,19 @@ static struct attribute *coresight_etmv4_mgmt_attrs[] = { NULL, }; -coresight_etm4x_simple_func(trcidr0, TRCIDR0); -coresight_etm4x_simple_func(trcidr1, TRCIDR1); -coresight_etm4x_simple_func(trcidr2, TRCIDR2); -coresight_etm4x_simple_func(trcidr3, TRCIDR3); -coresight_etm4x_simple_func(trcidr4, TRCIDR4); -coresight_etm4x_simple_func(trcidr5, TRCIDR5); +coresight_etm4x_cross_read(trcidr0, TRCIDR0); +coresight_etm4x_cross_read(trcidr1, TRCIDR1); +coresight_etm4x_cross_read(trcidr2, TRCIDR2); +coresight_etm4x_cross_read(trcidr3, TRCIDR3); +coresight_etm4x_cross_read(trcidr4, TRCIDR4); +coresight_etm4x_cross_read(trcidr5, TRCIDR5); /* trcidr[6,7] are reserved */ -coresight_etm4x_simple_func(trcidr8, TRCIDR8); -coresight_etm4x_simple_func(trcidr9, TRCIDR9); -coresight_etm4x_simple_func(trcidr10, TRCIDR10); -coresight_etm4x_simple_func(trcidr11, TRCIDR11); -coresight_etm4x_simple_func(trcidr12, TRCIDR12); -coresight_etm4x_simple_func(trcidr13, TRCIDR13); +coresight_etm4x_cross_read(trcidr8, TRCIDR8); +coresight_etm4x_cross_read(trcidr9, TRCIDR9); +coresight_etm4x_cross_read(trcidr10, TRCIDR10); +coresight_etm4x_cross_read(trcidr11, TRCIDR11); +coresight_etm4x_cross_read(trcidr12, TRCIDR12); +coresight_etm4x_cross_read(trcidr13, TRCIDR13); static struct attribute *coresight_etmv4_trcidr_attrs[] = { &dev_attr_trcidr0.attr, diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c index 1a5e0d1..4db8d6a 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.c +++ b/drivers/hwtracing/coresight/coresight-etm4x.c @@ -33,7 +33,6 @@ #include <linux/uaccess.h> #include <linux/perf_event.h> #include <linux/pm_runtime.h> -#include <linux/perf_event.h> #include <asm/sections.h> #include <asm/local.h> @@ -46,7 +45,9 @@ module_param_named(boot_enable, boot_enable, int, S_IRUGO); /* The number of ETMv4 currently registered */ static int etm4_count; static struct etmv4_drvdata *etmdrvdata[NR_CPUS]; -static void etm4_set_default(struct etmv4_config *config); +static void etm4_set_default_config(struct etmv4_config *config); +static int etm4_set_event_filters(struct etmv4_drvdata *drvdata, + struct perf_event *event); static enum cpuhp_state hp_online; @@ -79,22 +80,8 @@ static int etm4_cpu_id(struct coresight_device *csdev) static int etm4_trace_id(struct coresight_device *csdev) { struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - unsigned long flags; - int trace_id = -1; - - if (!local_read(&drvdata->mode)) - return drvdata->trcid; - - spin_lock_irqsave(&drvdata->spinlock, flags); - - CS_UNLOCK(drvdata->base); - trace_id = readl_relaxed(drvdata->base + TRCTRACEIDR); - trace_id &= ETM_TRACEID_MASK; - CS_LOCK(drvdata->base); - spin_unlock_irqrestore(&drvdata->spinlock, flags); - - return trace_id; + return drvdata->trcid; } static void etm4_enable_hw(void *info) @@ -113,8 +100,7 @@ static void etm4_enable_hw(void *info) /* wait for TRCSTATR.IDLE to go up */ if (coresight_timeout(drvdata->base, TRCSTATR, TRCSTATR_IDLE_BIT, 1)) dev_err(drvdata->dev, - "timeout observed when probing at offset %#x\n", - TRCSTATR); + "timeout while waiting for Idle Trace Status\n"); writel_relaxed(config->pe_sel, drvdata->base + TRCPROCSELR); writel_relaxed(config->cfg, drvdata->base + TRCCONFIGR); @@ -180,14 +166,20 @@ static void etm4_enable_hw(void *info) writel_relaxed(config->vmid_mask0, drvdata->base + TRCVMIDCCTLR0); writel_relaxed(config->vmid_mask1, drvdata->base + TRCVMIDCCTLR1); + /* + * Request to keep the trace unit powered and also + * emulation of powerdown + */ + writel_relaxed(readl_relaxed(drvdata->base + TRCPDCR) | TRCPDCR_PU, + drvdata->base + TRCPDCR); + /* Enable the trace unit */ writel_relaxed(1, drvdata->base + TRCPRGCTLR); /* wait for TRCSTATR.IDLE to go back down to '0' */ if (coresight_timeout(drvdata->base, TRCSTATR, TRCSTATR_IDLE_BIT, 0)) dev_err(drvdata->dev, - "timeout observed when probing at offset %#x\n", - TRCSTATR); + "timeout while waiting for Idle Trace Status\n"); CS_LOCK(drvdata->base); @@ -195,12 +187,16 @@ static void etm4_enable_hw(void *info) } static int etm4_parse_event_config(struct etmv4_drvdata *drvdata, - struct perf_event_attr *attr) + struct perf_event *event) { + int ret = 0; struct etmv4_config *config = &drvdata->config; + struct perf_event_attr *attr = &event->attr; - if (!attr) - return -EINVAL; + if (!attr) { + ret = -EINVAL; + goto out; + } /* Clear configuration from previous run */ memset(config, 0, sizeof(struct etmv4_config)); @@ -212,14 +208,12 @@ static int etm4_parse_event_config(struct etmv4_drvdata *drvdata, config->mode = ETM_MODE_EXCL_USER; /* Always start from the default config */ - etm4_set_default(config); + etm4_set_default_config(config); - /* - * By default the tracers are configured to trace the whole address - * range. Narrow the field only if requested by user space. - */ - if (config->mode) - etm4_config_trace_mode(config); + /* Configure filters specified on the perf cmd line, if any. */ + ret = etm4_set_event_filters(drvdata, event); + if (ret) + goto out; /* Go from generic option to ETMv4 specifics */ if (attr->config & BIT(ETM_OPT_CYCACC)) @@ -227,23 +221,30 @@ static int etm4_parse_event_config(struct etmv4_drvdata *drvdata, if (attr->config & BIT(ETM_OPT_TS)) config->cfg |= ETMv4_MODE_TIMESTAMP; - return 0; +out: + return ret; } static int etm4_enable_perf(struct coresight_device *csdev, - struct perf_event_attr *attr) + struct perf_event *event) { + int ret = 0; struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - if (WARN_ON_ONCE(drvdata->cpu != smp_processor_id())) - return -EINVAL; + if (WARN_ON_ONCE(drvdata->cpu != smp_processor_id())) { + ret = -EINVAL; + goto out; + } /* Configure the tracer based on the session's specifics */ - etm4_parse_event_config(drvdata, attr); + ret = etm4_parse_event_config(drvdata, event); + if (ret) + goto out; /* And enable it */ etm4_enable_hw(drvdata); - return 0; +out: + return ret; } static int etm4_enable_sysfs(struct coresight_device *csdev) @@ -274,7 +275,7 @@ err: } static int etm4_enable(struct coresight_device *csdev, - struct perf_event_attr *attr, u32 mode) + struct perf_event *event, u32 mode) { int ret; u32 val; @@ -291,7 +292,7 @@ static int etm4_enable(struct coresight_device *csdev, ret = etm4_enable_sysfs(csdev); break; case CS_MODE_PERF: - ret = etm4_enable_perf(csdev, attr); + ret = etm4_enable_perf(csdev, event); break; default: ret = -EINVAL; @@ -311,6 +312,11 @@ static void etm4_disable_hw(void *info) CS_UNLOCK(drvdata->base); + /* power can be removed from the trace unit now */ + control = readl_relaxed(drvdata->base + TRCPDCR); + control &= ~TRCPDCR_PU; + writel_relaxed(control, drvdata->base + TRCPDCR); + control = readl_relaxed(drvdata->base + TRCPRGCTLR); /* EN, bit[0] Trace unit enable bit */ @@ -326,14 +332,28 @@ static void etm4_disable_hw(void *info) dev_dbg(drvdata->dev, "cpu: %d disable smp call done\n", drvdata->cpu); } -static int etm4_disable_perf(struct coresight_device *csdev) +static int etm4_disable_perf(struct coresight_device *csdev, + struct perf_event *event) { + u32 control; + struct etm_filters *filters = event->hw.addr_filters; struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); if (WARN_ON_ONCE(drvdata->cpu != smp_processor_id())) return -EINVAL; etm4_disable_hw(drvdata); + + /* + * Check if the start/stop logic was active when the unit was stopped. + * That way we can re-enable the start/stop logic when the process is + * scheduled again. Configuration of the start/stop logic happens in + * function etm4_set_event_filters(). + */ + control = readl_relaxed(drvdata->base + TRCVICTLR); + /* TRCVICTLR::SSSTATUS, bit[9] */ + filters->ssstatus = (control & BIT(9)); + return 0; } @@ -362,7 +382,8 @@ static void etm4_disable_sysfs(struct coresight_device *csdev) dev_info(drvdata->dev, "ETM tracing disabled\n"); } -static void etm4_disable(struct coresight_device *csdev) +static void etm4_disable(struct coresight_device *csdev, + struct perf_event *event) { u32 mode; struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); @@ -381,7 +402,7 @@ static void etm4_disable(struct coresight_device *csdev) etm4_disable_sysfs(csdev); break; case CS_MODE_PERF: - etm4_disable_perf(csdev); + etm4_disable_perf(csdev, event); break; } @@ -564,21 +585,8 @@ static void etm4_init_arch_data(void *info) CS_LOCK(drvdata->base); } -static void etm4_set_default(struct etmv4_config *config) +static void etm4_set_default_config(struct etmv4_config *config) { - if (WARN_ON_ONCE(!config)) - return; - - /* - * Make default initialisation trace everything - * - * Select the "always true" resource selector on the - * "Enablign Event" line and configure address range comparator - * '0' to trace all the possible address range. From there - * configure the "include/exclude" engine to include address - * range comparator '0'. - */ - /* disable all events tracing */ config->eventctrl0 = 0x0; config->eventctrl1 = 0x0; @@ -594,6 +602,108 @@ static void etm4_set_default(struct etmv4_config *config) /* TRCVICTLR::EVENT = 0x01, select the always on logic */ config->vinst_ctrl |= BIT(0); +} + +static u64 etm4_get_access_type(struct etmv4_config *config) +{ + u64 access_type = 0; + + /* + * EXLEVEL_NS, bits[15:12] + * The Exception levels are: + * Bit[12] Exception level 0 - Application + * Bit[13] Exception level 1 - OS + * Bit[14] Exception level 2 - Hypervisor + * Bit[15] Never implemented + * + * Always stay away from hypervisor mode. + */ + access_type = ETM_EXLEVEL_NS_HYP; + + if (config->mode & ETM_MODE_EXCL_KERN) + access_type |= ETM_EXLEVEL_NS_OS; + + if (config->mode & ETM_MODE_EXCL_USER) + access_type |= ETM_EXLEVEL_NS_APP; + + /* + * EXLEVEL_S, bits[11:8], don't trace anything happening + * in secure state. + */ + access_type |= (ETM_EXLEVEL_S_APP | + ETM_EXLEVEL_S_OS | + ETM_EXLEVEL_S_HYP); + + return access_type; +} + +static void etm4_set_comparator_filter(struct etmv4_config *config, + u64 start, u64 stop, int comparator) +{ + u64 access_type = etm4_get_access_type(config); + + /* First half of default address comparator */ + config->addr_val[comparator] = start; + config->addr_acc[comparator] = access_type; + config->addr_type[comparator] = ETM_ADDR_TYPE_RANGE; + + /* Second half of default address comparator */ + config->addr_val[comparator + 1] = stop; + config->addr_acc[comparator + 1] = access_type; + config->addr_type[comparator + 1] = ETM_ADDR_TYPE_RANGE; + + /* + * Configure the ViewInst function to include this address range + * comparator. + * + * @comparator is divided by two since it is the index in the + * etmv4_config::addr_val array but register TRCVIIECTLR deals with + * address range comparator _pairs_. + * + * Therefore: + * index 0 -> compatator pair 0 + * index 2 -> comparator pair 1 + * index 4 -> comparator pair 2 + * ... + * index 14 -> comparator pair 7 + */ + config->viiectlr |= BIT(comparator / 2); +} + +static void etm4_set_start_stop_filter(struct etmv4_config *config, + u64 address, int comparator, + enum etm_addr_type type) +{ + int shift; + u64 access_type = etm4_get_access_type(config); + + /* Configure the comparator */ + config->addr_val[comparator] = address; + config->addr_acc[comparator] = access_type; + config->addr_type[comparator] = type; + + /* + * Configure ViewInst Start-Stop control register. + * Addresses configured to start tracing go from bit 0 to n-1, + * while those configured to stop tracing from 16 to 16 + n-1. + */ + shift = (type == ETM_ADDR_TYPE_START ? 0 : 16); + config->vissctlr |= BIT(shift + comparator); +} + +static void etm4_set_default_filter(struct etmv4_config *config) +{ + u64 start, stop; + + /* + * Configure address range comparator '0' to encompass all + * possible addresses. + */ + start = 0x0; + stop = ~0x0; + + etm4_set_comparator_filter(config, start, stop, + ETM_DEFAULT_ADDR_COMP); /* * TRCVICTLR::SSSTATUS == 1, the start-stop logic is @@ -601,43 +711,156 @@ static void etm4_set_default(struct etmv4_config *config) */ config->vinst_ctrl |= BIT(9); + /* No start-stop filtering for ViewInst */ + config->vissctlr = 0x0; +} + +static void etm4_set_default(struct etmv4_config *config) +{ + if (WARN_ON_ONCE(!config)) + return; + /* - * Configure address range comparator '0' to encompass all - * possible addresses. + * Make default initialisation trace everything + * + * Select the "always true" resource selector on the + * "Enablign Event" line and configure address range comparator + * '0' to trace all the possible address range. From there + * configure the "include/exclude" engine to include address + * range comparator '0'. */ + etm4_set_default_config(config); + etm4_set_default_filter(config); +} - /* First half of default address comparator: start at address 0 */ - config->addr_val[ETM_DEFAULT_ADDR_COMP] = 0x0; - /* trace instruction addresses */ - config->addr_acc[ETM_DEFAULT_ADDR_COMP] &= ~(BIT(0) | BIT(1)); - /* EXLEVEL_NS, bits[12:15], only trace application and kernel space */ - config->addr_acc[ETM_DEFAULT_ADDR_COMP] |= ETM_EXLEVEL_NS_HYP; - /* EXLEVEL_S, bits[11:8], don't trace anything in secure state */ - config->addr_acc[ETM_DEFAULT_ADDR_COMP] |= (ETM_EXLEVEL_S_APP | - ETM_EXLEVEL_S_OS | - ETM_EXLEVEL_S_HYP); - config->addr_type[ETM_DEFAULT_ADDR_COMP] = ETM_ADDR_TYPE_RANGE; +static int etm4_get_next_comparator(struct etmv4_drvdata *drvdata, u32 type) +{ + int nr_comparator, index = 0; + struct etmv4_config *config = &drvdata->config; /* - * Second half of default address comparator: go all - * the way to the top. - */ - config->addr_val[ETM_DEFAULT_ADDR_COMP + 1] = ~0x0; - /* trace instruction addresses */ - config->addr_acc[ETM_DEFAULT_ADDR_COMP + 1] &= ~(BIT(0) | BIT(1)); - /* Address comparator type must be equal for both halves */ - config->addr_acc[ETM_DEFAULT_ADDR_COMP + 1] = - config->addr_acc[ETM_DEFAULT_ADDR_COMP]; - config->addr_type[ETM_DEFAULT_ADDR_COMP + 1] = ETM_ADDR_TYPE_RANGE; + * nr_addr_cmp holds the number of comparator _pair_, so time 2 + * for the total number of comparators. + */ + nr_comparator = drvdata->nr_addr_cmp * 2; + + /* Go through the tally of comparators looking for a free one. */ + while (index < nr_comparator) { + switch (type) { + case ETM_ADDR_TYPE_RANGE: + if (config->addr_type[index] == ETM_ADDR_TYPE_NONE && + config->addr_type[index + 1] == ETM_ADDR_TYPE_NONE) + return index; + + /* Address range comparators go in pairs */ + index += 2; + break; + case ETM_ADDR_TYPE_START: + case ETM_ADDR_TYPE_STOP: + if (config->addr_type[index] == ETM_ADDR_TYPE_NONE) + return index; + + /* Start/stop address can have odd indexes */ + index += 1; + break; + default: + return -EINVAL; + } + } + + /* If we are here all the comparators have been used. */ + return -ENOSPC; +} + +static int etm4_set_event_filters(struct etmv4_drvdata *drvdata, + struct perf_event *event) +{ + int i, comparator, ret = 0; + u64 address; + struct etmv4_config *config = &drvdata->config; + struct etm_filters *filters = event->hw.addr_filters; + + if (!filters) + goto default_filter; + + /* Sync events with what Perf got */ + perf_event_addr_filters_sync(event); /* - * Configure the ViewInst function to filter on address range - * comparator '0'. + * If there are no filters to deal with simply go ahead with + * the default filter, i.e the entire address range. */ - config->viiectlr = BIT(0); + if (!filters->nr_filters) + goto default_filter; + + for (i = 0; i < filters->nr_filters; i++) { + struct etm_filter *filter = &filters->etm_filter[i]; + enum etm_addr_type type = filter->type; + + /* See if a comparator is free. */ + comparator = etm4_get_next_comparator(drvdata, type); + if (comparator < 0) { + ret = comparator; + goto out; + } + + switch (type) { + case ETM_ADDR_TYPE_RANGE: + etm4_set_comparator_filter(config, + filter->start_addr, + filter->stop_addr, + comparator); + /* + * TRCVICTLR::SSSTATUS == 1, the start-stop logic is + * in the started state + */ + config->vinst_ctrl |= BIT(9); + + /* No start-stop filtering for ViewInst */ + config->vissctlr = 0x0; + break; + case ETM_ADDR_TYPE_START: + case ETM_ADDR_TYPE_STOP: + /* Get the right start or stop address */ + address = (type == ETM_ADDR_TYPE_START ? + filter->start_addr : + filter->stop_addr); + + /* Configure comparator */ + etm4_set_start_stop_filter(config, address, + comparator, type); + + /* + * If filters::ssstatus == 1, trace acquisition was + * started but the process was yanked away before the + * the stop address was hit. As such the start/stop + * logic needs to be re-started so that tracing can + * resume where it left. + * + * The start/stop logic status when a process is + * scheduled out is checked in function + * etm4_disable_perf(). + */ + if (filters->ssstatus) + config->vinst_ctrl |= BIT(9); + + /* No include/exclude filtering for ViewInst */ + config->viiectlr = 0x0; + break; + default: + ret = -EINVAL; + goto out; + } + } - /* no start-stop filtering for ViewInst */ - config->vissctlr = 0x0; + goto out; + + +default_filter: + etm4_set_default_filter(config); + +out: + return ret; } void etm4_config_trace_mode(struct etmv4_config *config) @@ -727,13 +950,9 @@ static int etm4_probe(struct amba_device *adev, const struct amba_id *id) struct coresight_platform_data *pdata = NULL; struct etmv4_drvdata *drvdata; struct resource *res = &adev->res; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = adev->dev.of_node; - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) - return -ENOMEM; - drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); if (!drvdata) return -ENOMEM; @@ -788,13 +1007,13 @@ static int etm4_probe(struct amba_device *adev, const struct amba_id *id) etm4_init_trace_id(drvdata); etm4_set_default(&drvdata->config); - desc->type = CORESIGHT_DEV_TYPE_SOURCE; - desc->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC; - desc->ops = &etm4_cs_ops; - desc->pdata = pdata; - desc->dev = dev; - desc->groups = coresight_etmv4_groups; - drvdata->csdev = coresight_register(desc); + desc.type = CORESIGHT_DEV_TYPE_SOURCE; + desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC; + desc.ops = &etm4_cs_ops; + desc.pdata = pdata; + desc.dev = dev; + desc.groups = coresight_etmv4_groups; + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); goto err_arch_supported; @@ -826,12 +1045,12 @@ err_arch_supported: } static struct amba_id etm4_ids[] = { - { /* ETM 4.0 - Qualcomm */ - .id = 0x0003b95d, - .mask = 0x0003ffff, + { /* ETM 4.0 - Cortex-A53 */ + .id = 0x000bb95d, + .mask = 0x000fffff, .data = "ETM 4.0", }, - { /* ETM 4.0 - Juno board */ + { /* ETM 4.0 - Cortex-A57 */ .id = 0x000bb95e, .mask = 0x000fffff, .data = "ETM 4.0", diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h index 5359c51..ba8d3f8 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.h +++ b/drivers/hwtracing/coresight/coresight-etm4x.h @@ -183,6 +183,9 @@ #define TRCSTATR_IDLE_BIT 0 #define ETM_DEFAULT_ADDR_COMP 0 +/* PowerDown Control Register bits */ +#define TRCPDCR_PU BIT(3) + /* secure state access levels */ #define ETM_EXLEVEL_S_APP BIT(8) #define ETM_EXLEVEL_S_OS BIT(9) @@ -407,14 +410,6 @@ enum etm_addr_ctxtype { ETM_CTX_CTXID_VMID, }; -enum etm_addr_type { - ETM_ADDR_TYPE_NONE, - ETM_ADDR_TYPE_SINGLE, - ETM_ADDR_TYPE_RANGE, - ETM_ADDR_TYPE_START, - ETM_ADDR_TYPE_STOP, -}; - extern const struct attribute_group *coresight_etmv4_groups[]; void etm4_config_trace_mode(struct etmv4_config *config); #endif diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c index 05df789..860fe6e 100644 --- a/drivers/hwtracing/coresight/coresight-funnel.c +++ b/drivers/hwtracing/coresight/coresight-funnel.c @@ -176,7 +176,7 @@ static int funnel_probe(struct amba_device *adev, const struct amba_id *id) struct coresight_platform_data *pdata = NULL; struct funnel_drvdata *drvdata; struct resource *res = &adev->res; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = adev->dev.of_node; if (np) { @@ -207,17 +207,13 @@ static int funnel_probe(struct amba_device *adev, const struct amba_id *id) drvdata->base = base; pm_runtime_put(&adev->dev); - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) - return -ENOMEM; - - desc->type = CORESIGHT_DEV_TYPE_LINK; - desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_MERG; - desc->ops = &funnel_cs_ops; - desc->pdata = pdata; - desc->dev = dev; - desc->groups = coresight_funnel_groups; - drvdata->csdev = coresight_register(desc); + desc.type = CORESIGHT_DEV_TYPE_LINK; + desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_MERG; + desc.ops = &funnel_cs_ops; + desc.pdata = pdata; + desc.dev = dev; + desc.groups = coresight_funnel_groups; + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) return PTR_ERR(drvdata->csdev); diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index ad975c5..196a14b 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -16,6 +16,7 @@ #include <linux/bitops.h> #include <linux/io.h> #include <linux/coresight.h> +#include <linux/pm_runtime.h> /* * Coresight management registers (0xf00-0xfcc) @@ -37,16 +38,32 @@ #define ETM_MODE_EXCL_KERN BIT(30) #define ETM_MODE_EXCL_USER BIT(31) -#define coresight_simple_func(type, name, offset) \ +typedef u32 (*coresight_read_fn)(const struct device *, u32 offset); +#define coresight_simple_func(type, func, name, offset) \ static ssize_t name##_show(struct device *_dev, \ struct device_attribute *attr, char *buf) \ { \ type *drvdata = dev_get_drvdata(_dev->parent); \ - return scnprintf(buf, PAGE_SIZE, "0x%x\n", \ - readl_relaxed(drvdata->base + offset)); \ + coresight_read_fn fn = func; \ + u32 val; \ + pm_runtime_get_sync(_dev->parent); \ + if (fn) \ + val = fn(_dev->parent, offset); \ + else \ + val = readl_relaxed(drvdata->base + offset); \ + pm_runtime_put_sync(_dev->parent); \ + return scnprintf(buf, PAGE_SIZE, "0x%x\n", val); \ } \ static DEVICE_ATTR_RO(name) +enum etm_addr_type { + ETM_ADDR_TYPE_NONE, + ETM_ADDR_TYPE_SINGLE, + ETM_ADDR_TYPE_RANGE, + ETM_ADDR_TYPE_START, + ETM_ADDR_TYPE_STOP, +}; + enum cs_mode { CS_MODE_DISABLED, CS_MODE_SYSFS, diff --git a/drivers/hwtracing/coresight/coresight-replicator-qcom.c b/drivers/hwtracing/coresight/coresight-replicator-qcom.c index 700f710..0a3d15f 100644 --- a/drivers/hwtracing/coresight/coresight-replicator-qcom.c +++ b/drivers/hwtracing/coresight/coresight-replicator-qcom.c @@ -102,7 +102,7 @@ static int replicator_probe(struct amba_device *adev, const struct amba_id *id) struct resource *res = &adev->res; struct coresight_platform_data *pdata = NULL; struct replicator_state *drvdata; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = adev->dev.of_node; void __iomem *base; @@ -134,16 +134,12 @@ static int replicator_probe(struct amba_device *adev, const struct amba_id *id) dev_set_drvdata(dev, drvdata); pm_runtime_put(&adev->dev); - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) - return -ENOMEM; - - desc->type = CORESIGHT_DEV_TYPE_LINK; - desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT; - desc->ops = &replicator_cs_ops; - desc->pdata = adev->dev.platform_data; - desc->dev = &adev->dev; - drvdata->csdev = coresight_register(desc); + desc.type = CORESIGHT_DEV_TYPE_LINK; + desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT; + desc.ops = &replicator_cs_ops; + desc.pdata = adev->dev.platform_data; + desc.dev = &adev->dev; + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) return PTR_ERR(drvdata->csdev); diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index c6982e3..3756e71 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -69,7 +69,7 @@ static int replicator_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct coresight_platform_data *pdata = NULL; struct replicator_drvdata *drvdata; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = pdev->dev.of_node; if (np) { @@ -95,18 +95,12 @@ static int replicator_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); platform_set_drvdata(pdev, drvdata); - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) { - ret = -ENOMEM; - goto out_disable_pm; - } - - desc->type = CORESIGHT_DEV_TYPE_LINK; - desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT; - desc->ops = &replicator_cs_ops; - desc->pdata = pdev->dev.platform_data; - desc->dev = &pdev->dev; - drvdata->csdev = coresight_register(desc); + desc.type = CORESIGHT_DEV_TYPE_LINK; + desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT; + desc.ops = &replicator_cs_ops; + desc.pdata = pdev->dev.platform_data; + desc.dev = &pdev->dev; + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); goto out_disable_pm; diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 73be58a..49e0f1b 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -105,10 +105,12 @@ module_param_named( /** * struct channel_space - central management entity for extended ports * @base: memory mapped base address where channels start. + * @phys: physical base address of channel region. * @guaraneed: is the channel delivery guaranteed. */ struct channel_space { void __iomem *base; + phys_addr_t phys; unsigned long *guaranteed; }; @@ -196,7 +198,7 @@ static void stm_enable_hw(struct stm_drvdata *drvdata) } static int stm_enable(struct coresight_device *csdev, - struct perf_event_attr *attr, u32 mode) + struct perf_event *event, u32 mode) { u32 val; struct stm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); @@ -258,7 +260,8 @@ static void stm_disable_hw(struct stm_drvdata *drvdata) stm_hwevent_disable_hw(drvdata); } -static void stm_disable(struct coresight_device *csdev) +static void stm_disable(struct coresight_device *csdev, + struct perf_event *event) { struct stm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); @@ -353,7 +356,24 @@ static void stm_generic_unlink(struct stm_data *stm_data, if (!drvdata || !drvdata->csdev) return; - stm_disable(drvdata->csdev); + stm_disable(drvdata->csdev, NULL); +} + +static phys_addr_t +stm_mmio_addr(struct stm_data *stm_data, unsigned int master, + unsigned int channel, unsigned int nr_chans) +{ + struct stm_drvdata *drvdata = container_of(stm_data, + struct stm_drvdata, stm); + phys_addr_t addr; + + addr = drvdata->chs.phys + channel * BYTES_PER_CHANNEL; + + if (offset_in_page(addr) || + offset_in_page(nr_chans * BYTES_PER_CHANNEL)) + return 0; + + return addr; } static long stm_generic_set_options(struct stm_data *stm_data, @@ -616,7 +636,7 @@ static ssize_t traceid_store(struct device *dev, static DEVICE_ATTR_RW(traceid); #define coresight_stm_simple_func(name, offset) \ - coresight_simple_func(struct stm_drvdata, name, offset) + coresight_simple_func(struct stm_drvdata, NULL, name, offset) coresight_stm_simple_func(tcsr, STMTCSR); coresight_stm_simple_func(tsfreqr, STMTSFREQR); @@ -761,7 +781,9 @@ static void stm_init_generic_data(struct stm_drvdata *drvdata) drvdata->stm.sw_end = 1; drvdata->stm.hw_override = true; drvdata->stm.sw_nchannels = drvdata->numsp; + drvdata->stm.sw_mmiosz = BYTES_PER_CHANNEL; drvdata->stm.packet = stm_generic_packet; + drvdata->stm.mmio_addr = stm_mmio_addr; drvdata->stm.link = stm_generic_link; drvdata->stm.unlink = stm_generic_unlink; drvdata->stm.set_options = stm_generic_set_options; @@ -778,7 +800,7 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) struct resource *res = &adev->res; struct resource ch_res; size_t res_size, bitmap_size; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = adev->dev.of_node; if (np) { @@ -808,6 +830,7 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) ret = stm_get_resource_byname(np, "stm-stimulus-base", &ch_res); if (ret) return ret; + drvdata->chs.phys = ch_res.start; base = devm_ioremap_resource(dev, &ch_res); if (IS_ERR(base)) @@ -843,19 +866,13 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) return -EPROBE_DEFER; } - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) { - ret = -ENOMEM; - goto stm_unregister; - } - - desc->type = CORESIGHT_DEV_TYPE_SOURCE; - desc->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE; - desc->ops = &stm_cs_ops; - desc->pdata = pdata; - desc->dev = dev; - desc->groups = coresight_stm_groups; - drvdata->csdev = coresight_register(desc); + desc.type = CORESIGHT_DEV_TYPE_SOURCE; + desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE; + desc.ops = &stm_cs_ops; + desc.pdata = pdata; + desc.dev = dev; + desc.groups = coresight_stm_groups; + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); goto stm_unregister; diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c index 466af86..d6941ea 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etf.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c @@ -22,7 +22,7 @@ #include "coresight-priv.h" #include "coresight-tmc.h" -void tmc_etb_enable_hw(struct tmc_drvdata *drvdata) +static void tmc_etb_enable_hw(struct tmc_drvdata *drvdata) { CS_UNLOCK(drvdata->base); @@ -48,6 +48,7 @@ static void tmc_etb_dump_hw(struct tmc_drvdata *drvdata) int i; bufp = drvdata->buf; + drvdata->len = 0; while (1) { for (i = 0; i < drvdata->memwidth; i++) { read_data = readl_relaxed(drvdata->base + TMC_RRD); @@ -55,6 +56,7 @@ static void tmc_etb_dump_hw(struct tmc_drvdata *drvdata) return; memcpy(bufp, &read_data, 4); bufp += 4; + drvdata->len += 4; } } } @@ -166,7 +168,7 @@ out: spin_unlock_irqrestore(&drvdata->spinlock, flags); /* Free memory outside the spinlock if need be */ - if (!used && buf) + if (!used) kfree(buf); if (!ret) diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 688be9e..886ea83 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -20,7 +20,7 @@ #include "coresight-priv.h" #include "coresight-tmc.h" -void tmc_etr_enable_hw(struct tmc_drvdata *drvdata) +static void tmc_etr_enable_hw(struct tmc_drvdata *drvdata) { u32 axictl; @@ -64,11 +64,17 @@ static void tmc_etr_dump_hw(struct tmc_drvdata *drvdata) rwp = readl_relaxed(drvdata->base + TMC_RWP); val = readl_relaxed(drvdata->base + TMC_STS); - /* How much memory do we still have */ - if (val & BIT(0)) + /* + * Adjust the buffer to point to the beginning of the trace data + * and update the available trace data. + */ + if (val & TMC_STS_FULL) { drvdata->buf = drvdata->vaddr + rwp - drvdata->paddr; - else + drvdata->len = drvdata->size; + } else { drvdata->buf = drvdata->vaddr; + drvdata->len = rwp - drvdata->paddr; + } } static void tmc_etr_disable_hw(struct tmc_drvdata *drvdata) diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc.c index 9e02ac9..d8517d2 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.c +++ b/drivers/hwtracing/coresight/coresight-tmc.c @@ -38,8 +38,7 @@ void tmc_wait_for_tmcready(struct tmc_drvdata *drvdata) if (coresight_timeout(drvdata->base, TMC_STS, TMC_STS_TMCREADY_BIT, 1)) { dev_err(drvdata->dev, - "timeout observed when probing at offset %#x\n", - TMC_STS); + "timeout while waiting for TMC to be Ready\n"); } } @@ -56,8 +55,7 @@ void tmc_flush_and_stop(struct tmc_drvdata *drvdata) if (coresight_timeout(drvdata->base, TMC_FFCR, TMC_FFCR_FLUSHMAN_BIT, 0)) { dev_err(drvdata->dev, - "timeout observed when probing at offset %#x\n", - TMC_FFCR); + "timeout while waiting for completion of Manual Flush\n"); } tmc_wait_for_tmcready(drvdata); @@ -140,8 +138,8 @@ static ssize_t tmc_read(struct file *file, char __user *data, size_t len, struct tmc_drvdata, miscdev); char *bufp = drvdata->buf + *ppos; - if (*ppos + len > drvdata->size) - len = drvdata->size - *ppos; + if (*ppos + len > drvdata->len) + len = drvdata->len - *ppos; if (drvdata->config_type == TMC_CONFIG_TYPE_ETR) { if (bufp == (char *)(drvdata->vaddr + drvdata->size)) @@ -160,7 +158,7 @@ static ssize_t tmc_read(struct file *file, char __user *data, size_t len, *ppos += len; dev_dbg(drvdata->dev, "%s: %zu bytes copied, %d bytes left\n", - __func__, len, (int)(drvdata->size - *ppos)); + __func__, len, (int)(drvdata->len - *ppos)); return len; } @@ -220,7 +218,7 @@ static enum tmc_mem_intf_width tmc_get_memwidth(u32 devid) } #define coresight_tmc_simple_func(name, offset) \ - coresight_simple_func(struct tmc_drvdata, name, offset) + coresight_simple_func(struct tmc_drvdata, NULL, name, offset) coresight_tmc_simple_func(rsz, TMC_RSZ); coresight_tmc_simple_func(sts, TMC_STS); @@ -249,8 +247,8 @@ static struct attribute *coresight_tmc_mgmt_attrs[] = { NULL, }; -ssize_t trigger_cntr_show(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t trigger_cntr_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct tmc_drvdata *drvdata = dev_get_drvdata(dev->parent); unsigned long val = drvdata->trigger_cntr; @@ -304,27 +302,32 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id) struct coresight_platform_data *pdata = NULL; struct tmc_drvdata *drvdata; struct resource *res = &adev->res; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = adev->dev.of_node; if (np) { pdata = of_get_coresight_platform_data(dev, np); - if (IS_ERR(pdata)) - return PTR_ERR(pdata); + if (IS_ERR(pdata)) { + ret = PTR_ERR(pdata); + goto out; + } adev->dev.platform_data = pdata; } + ret = -ENOMEM; drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); if (!drvdata) - return -ENOMEM; + goto out; drvdata->dev = &adev->dev; dev_set_drvdata(dev, drvdata); /* Validity for the resource is already checked by the AMBA core */ base = devm_ioremap_resource(dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); + if (IS_ERR(base)) { + ret = PTR_ERR(base); + goto out; + } drvdata->base = base; @@ -347,33 +350,28 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id) pm_runtime_put(&adev->dev); - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) { - ret = -ENOMEM; - goto err_devm_kzalloc; - } - - desc->pdata = pdata; - desc->dev = dev; - desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER; - desc->groups = coresight_tmc_groups; + desc.pdata = pdata; + desc.dev = dev; + desc.groups = coresight_tmc_groups; if (drvdata->config_type == TMC_CONFIG_TYPE_ETB) { - desc->type = CORESIGHT_DEV_TYPE_SINK; - desc->ops = &tmc_etb_cs_ops; + desc.type = CORESIGHT_DEV_TYPE_SINK; + desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER; + desc.ops = &tmc_etb_cs_ops; } else if (drvdata->config_type == TMC_CONFIG_TYPE_ETR) { - desc->type = CORESIGHT_DEV_TYPE_SINK; - desc->ops = &tmc_etr_cs_ops; + desc.type = CORESIGHT_DEV_TYPE_SINK; + desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER; + desc.ops = &tmc_etr_cs_ops; } else { - desc->type = CORESIGHT_DEV_TYPE_LINKSINK; - desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_FIFO; - desc->ops = &tmc_etf_cs_ops; + desc.type = CORESIGHT_DEV_TYPE_LINKSINK; + desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_FIFO; + desc.ops = &tmc_etf_cs_ops; } - drvdata->csdev = coresight_register(desc); + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); - goto err_devm_kzalloc; + goto out; } drvdata->miscdev.name = pdata->name; @@ -381,16 +379,8 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id) drvdata->miscdev.fops = &tmc_fops; ret = misc_register(&drvdata->miscdev); if (ret) - goto err_misc_register; - - return 0; - -err_misc_register: - coresight_unregister(drvdata->csdev); -err_devm_kzalloc: - if (drvdata->config_type == TMC_CONFIG_TYPE_ETR) - dma_free_coherent(dev, drvdata->size, - drvdata->vaddr, drvdata->paddr); + coresight_unregister(drvdata->csdev); +out: return ret; } diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h index 5c5fe2a..44b3ae3 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.h +++ b/drivers/hwtracing/coresight/coresight-tmc.h @@ -98,7 +98,8 @@ enum tmc_mem_intf_width { * @buf: area of memory where trace data get sent. * @paddr: DMA start location in RAM. * @vaddr: virtual representation of @paddr. - * @size: @buf size. + * @size: trace buffer size. + * @len: size of the available trace. * @mode: how this TMC is being used. * @config_type: TMC variant, must be of type @tmc_config_type. * @memwidth: width of the memory interface databus, in bytes. @@ -115,6 +116,7 @@ struct tmc_drvdata { dma_addr_t paddr; void __iomem *vaddr; u32 size; + u32 len; local_t mode; enum tmc_config_type config_type; enum tmc_mem_intf_width memwidth; diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index 4e471e2..0673baf 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -119,7 +119,7 @@ static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) struct coresight_platform_data *pdata = NULL; struct tpiu_drvdata *drvdata; struct resource *res = &adev->res; - struct coresight_desc *desc; + struct coresight_desc desc = { 0 }; struct device_node *np = adev->dev.of_node; if (np) { @@ -154,16 +154,12 @@ static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) pm_runtime_put(&adev->dev); - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) - return -ENOMEM; - - desc->type = CORESIGHT_DEV_TYPE_SINK; - desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_PORT; - desc->ops = &tpiu_cs_ops; - desc->pdata = pdata; - desc->dev = dev; - drvdata->csdev = coresight_register(desc); + desc.type = CORESIGHT_DEV_TYPE_SINK; + desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_PORT; + desc.ops = &tpiu_cs_ops; + desc.pdata = pdata; + desc.dev = dev; + drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) return PTR_ERR(drvdata->csdev); diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index d08d1ab..7bf00a0 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -257,7 +257,7 @@ static void coresight_disable_source(struct coresight_device *csdev) { if (atomic_dec_return(csdev->refcnt) == 0) { if (source_ops(csdev)->disable) { - source_ops(csdev)->disable(csdev); + source_ops(csdev)->disable(csdev, NULL); csdev->enable = false; } } @@ -429,7 +429,7 @@ struct list_head *coresight_build_path(struct coresight_device *csdev) path = kzalloc(sizeof(struct list_head), GFP_KERNEL); if (!path) - return NULL; + return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(path); @@ -725,7 +725,8 @@ static int coresight_orphan_match(struct device *dev, void *data) /* We have found at least one orphan connection */ if (conn->child_dev == NULL) { /* Does it match this newly added device? */ - if (!strcmp(dev_name(&csdev->dev), conn->child_name)) { + if (conn->child_name && + !strcmp(dev_name(&csdev->dev), conn->child_name)) { conn->child_dev = csdev; } else { /* This component still has an orphan */ @@ -893,7 +894,7 @@ struct coresight_device *coresight_register(struct coresight_desc *desc) int nr_refcnts = 1; atomic_t *refcnts = NULL; struct coresight_device *csdev; - struct coresight_connection *conns; + struct coresight_connection *conns = NULL; csdev = kzalloc(sizeof(*csdev), GFP_KERNEL); if (!csdev) { @@ -921,16 +922,20 @@ struct coresight_device *coresight_register(struct coresight_desc *desc) csdev->nr_inport = desc->pdata->nr_inport; csdev->nr_outport = desc->pdata->nr_outport; - conns = kcalloc(csdev->nr_outport, sizeof(*conns), GFP_KERNEL); - if (!conns) { - ret = -ENOMEM; - goto err_kzalloc_conns; - } - for (i = 0; i < csdev->nr_outport; i++) { - conns[i].outport = desc->pdata->outports[i]; - conns[i].child_name = desc->pdata->child_names[i]; - conns[i].child_port = desc->pdata->child_ports[i]; + /* Initialise connections if there is at least one outport */ + if (csdev->nr_outport) { + conns = kcalloc(csdev->nr_outport, sizeof(*conns), GFP_KERNEL); + if (!conns) { + ret = -ENOMEM; + goto err_kzalloc_conns; + } + + for (i = 0; i < csdev->nr_outport; i++) { + conns[i].outport = desc->pdata->outports[i]; + conns[i].child_name = desc->pdata->child_names[i]; + conns[i].child_port = desc->pdata->child_ports[i]; + } } csdev->conns = conns; diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c index b68da18..629e031 100644 --- a/drivers/hwtracing/coresight/of_coresight.c +++ b/drivers/hwtracing/coresight/of_coresight.c @@ -166,7 +166,7 @@ struct coresight_platform_data *of_get_coresight_platform_data( rdev = of_coresight_get_endpoint_device(rparent); if (!rdev) - continue; + return ERR_PTR(-EPROBE_DEFER); pdata->child_names[i] = dev_name(rdev); pdata->child_ports[i] = rendpoint.id; @@ -184,6 +184,7 @@ struct coresight_platform_data *of_get_coresight_platform_data( break; } } + of_node_put(dn); return pdata; } diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig index d130cdc..7fa65ab 100644 --- a/drivers/iio/pressure/Kconfig +++ b/drivers/iio/pressure/Kconfig @@ -8,8 +8,6 @@ menu "Pressure sensors" config BMP280 tristate "Bosch Sensortec BMP180/BMP280 pressure sensor I2C driver" depends on (I2C || SPI_MASTER) - depends on !(BMP085_I2C=y || BMP085_I2C=m) - depends on !(BMP085_SPI=y || BMP085_SPI=m) select REGMAP select BMP280_I2C if (I2C) select BMP280_SPI if (SPI_MASTER) diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 65ebbd1..92595b9 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -1013,23 +1013,12 @@ static struct miscdevice uinput_misc = { .minor = UINPUT_MINOR, .name = UINPUT_NAME, }; +module_misc_device(uinput_misc); + MODULE_ALIAS_MISCDEV(UINPUT_MINOR); MODULE_ALIAS("devname:" UINPUT_NAME); -static int __init uinput_init(void) -{ - return misc_register(&uinput_misc); -} - -static void __exit uinput_exit(void) -{ - misc_deregister(&uinput_misc); -} - MODULE_AUTHOR("Aristeu Sergio Rozanski Filho"); MODULE_DESCRIPTION("User level driver support for input subsystem"); MODULE_LICENSE("GPL"); MODULE_VERSION("0.3"); - -module_init(uinput_init); -module_exit(uinput_exit); diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c index 9ebd2cf..c784ddc 100644 --- a/drivers/lightnvm/core.c +++ b/drivers/lightnvm/core.c @@ -1171,27 +1171,10 @@ static struct miscdevice _nvm_misc = { .nodename = "lightnvm/control", .fops = &_ctl_fops, }; +module_misc_device(_nvm_misc); MODULE_ALIAS_MISCDEV(MISC_DYNAMIC_MINOR); -static int __init nvm_mod_init(void) -{ - int ret; - - ret = misc_register(&_nvm_misc); - if (ret) - pr_err("nvm: misc_register failed for control device"); - - return ret; -} - -static void __exit nvm_mod_exit(void) -{ - misc_deregister(&_nvm_misc); -} - MODULE_AUTHOR("Matias Bjorling <m@bjorling.me>"); MODULE_LICENSE("GPL v2"); MODULE_VERSION("0.1"); -module_init(nvm_mod_init); -module_exit(nvm_mod_exit); diff --git a/drivers/mcb/Kconfig b/drivers/mcb/Kconfig index e9a6976..76d9c51 100644 --- a/drivers/mcb/Kconfig +++ b/drivers/mcb/Kconfig @@ -28,4 +28,13 @@ config MCB_PCI If build as a module, the module is called mcb-pci.ko +config MCB_LPC + tristate "LPC (non PCI) based MCB carrier" + default n + help + + This is a MCB carrier on a LPC or non PCI device. + + If build as a module, the module is called mcb-lpc.ko + endif # MCB diff --git a/drivers/mcb/Makefile b/drivers/mcb/Makefile index 1ae1413..bcc7745 100644 --- a/drivers/mcb/Makefile +++ b/drivers/mcb/Makefile @@ -5,3 +5,4 @@ mcb-y += mcb-core.o mcb-y += mcb-parse.o obj-$(CONFIG_MCB_PCI) += mcb-pci.o +obj-$(CONFIG_MCB_LPC) += mcb-lpc.o diff --git a/drivers/mcb/mcb-core.c b/drivers/mcb/mcb-core.c index 6f2c852..921a5d2 100644 --- a/drivers/mcb/mcb-core.c +++ b/drivers/mcb/mcb-core.c @@ -233,6 +233,7 @@ int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev) dev->dev.bus = &mcb_bus_type; dev->dev.parent = bus->dev.parent; dev->dev.release = mcb_release_dev; + dev->dma_dev = bus->carrier; device_id = dev->id; dev_set_name(&dev->dev, "mcb%d-16z%03d-%d:%d:%d", @@ -369,7 +370,6 @@ struct mcb_device *mcb_alloc_dev(struct mcb_bus *bus) if (!dev) return NULL; - INIT_LIST_HEAD(&dev->bus_list); dev->bus = bus; return dev; @@ -405,20 +405,6 @@ static int __mcb_bus_add_devices(struct device *dev, void *data) return 0; } -static int __mcb_bus_add_child(struct device *dev, void *data) -{ - struct mcb_device *mdev = to_mcb_device(dev); - struct mcb_bus *child; - - BUG_ON(!mdev->is_added); - child = mdev->subordinate; - - if (child) - mcb_bus_add_devices(child); - - return 0; -} - /** * mcb_bus_add_devices() - Add devices in the bus' internal device list * @bus: The @mcb_bus we add the devices @@ -428,8 +414,6 @@ static int __mcb_bus_add_child(struct device *dev, void *data) void mcb_bus_add_devices(const struct mcb_bus *bus) { bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_bus_add_devices); - bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_bus_add_child); - } EXPORT_SYMBOL_GPL(mcb_bus_add_devices); diff --git a/drivers/mcb/mcb-internal.h b/drivers/mcb/mcb-internal.h index 5254e02..d6e6933 100644 --- a/drivers/mcb/mcb-internal.h +++ b/drivers/mcb/mcb-internal.h @@ -112,6 +112,15 @@ struct chameleon_bdd { u32 size; } __packed; +struct chameleon_bar { + u32 addr; + u32 size; +}; + +#define BAR_CNT(x) ((x) & 0x07) +#define CHAMELEON_BAR_MAX 6 +#define BAR_DESC_SIZE(x) ((x) * sizeof(struct chameleon_bar) + sizeof(__le32)) + int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase, void __iomem *base); diff --git a/drivers/mcb/mcb-lpc.c b/drivers/mcb/mcb-lpc.c new file mode 100644 index 0000000..d072c08 --- /dev/null +++ b/drivers/mcb/mcb-lpc.c @@ -0,0 +1,158 @@ +/* + * MEN Chameleon Bus. + * + * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de) + * Author: Andreas Werner <andreas.werner@men.de> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; version 2 of the License. + */ + +#include <linux/platform_device.h> +#include <linux/module.h> +#include <linux/dmi.h> +#include <linux/mcb.h> +#include <linux/io.h> +#include "mcb-internal.h" + +struct priv { + struct mcb_bus *bus; + struct resource *mem; + void __iomem *base; +}; + +static int mcb_lpc_probe(struct platform_device *pdev) +{ + struct resource *res; + struct priv *priv; + int ret = 0; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!priv->mem) { + dev_err(&pdev->dev, "No Memory resource\n"); + return -ENODEV; + } + + res = devm_request_mem_region(&pdev->dev, priv->mem->start, + resource_size(priv->mem), + KBUILD_MODNAME); + if (!res) { + dev_err(&pdev->dev, "Failed to request IO memory\n"); + return -EBUSY; + } + + priv->base = devm_ioremap(&pdev->dev, priv->mem->start, + resource_size(priv->mem)); + if (!priv->base) { + dev_err(&pdev->dev, "Cannot ioremap\n"); + return -ENOMEM; + } + + platform_set_drvdata(pdev, priv); + + priv->bus = mcb_alloc_bus(&pdev->dev); + if (IS_ERR(priv->bus)) + return PTR_ERR(priv->bus); + + ret = chameleon_parse_cells(priv->bus, priv->mem->start, priv->base); + if (ret < 0) { + mcb_release_bus(priv->bus); + return ret; + } + + dev_dbg(&pdev->dev, "Found %d cells\n", ret); + + mcb_bus_add_devices(priv->bus); + + return 0; + +} + +static int mcb_lpc_remove(struct platform_device *pdev) +{ + struct priv *priv = platform_get_drvdata(pdev); + + mcb_release_bus(priv->bus); + + return 0; +} + +static struct platform_device *mcb_lpc_pdev; + +static int mcb_lpc_create_platform_device(const struct dmi_system_id *id) +{ + struct resource *res = id->driver_data; + int ret; + + mcb_lpc_pdev = platform_device_alloc("mcb-lpc", -1); + if (!mcb_lpc_pdev) + return -ENOMEM; + + ret = platform_device_add_resources(mcb_lpc_pdev, res, 1); + if (ret) + goto out_put; + + ret = platform_device_add(mcb_lpc_pdev); + if (ret) + goto out_put; + + return 0; + +out_put: + platform_device_put(mcb_lpc_pdev); + return ret; +} + +static struct resource sc24_fpga_resource = { + .start = 0xe000e000, + .end = 0xe000e000 + CHAM_HEADER_SIZE, + .flags = IORESOURCE_MEM, +}; + +static struct platform_driver mcb_lpc_driver = { + .driver = { + .name = "mcb-lpc", + }, + .probe = mcb_lpc_probe, + .remove = mcb_lpc_remove, +}; + +static const struct dmi_system_id mcb_lpc_dmi_table[] = { + { + .ident = "SC24", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "MEN"), + DMI_MATCH(DMI_PRODUCT_VERSION, "14SC24"), + }, + .driver_data = (void *)&sc24_fpga_resource, + .callback = mcb_lpc_create_platform_device, + }, + {} +}; +MODULE_DEVICE_TABLE(dmi, mcb_lpc_dmi_table); + +static int __init mcb_lpc_init(void) +{ + if (!dmi_check_system(mcb_lpc_dmi_table)) + return -ENODEV; + + return platform_driver_register(&mcb_lpc_driver); +} + +static void __exit mcb_lpc_exit(void) +{ + platform_device_unregister(mcb_lpc_pdev); + platform_driver_unregister(&mcb_lpc_driver); +} + +module_init(mcb_lpc_init); +module_exit(mcb_lpc_exit); + +MODULE_AUTHOR("Andreas Werner <andreas.werner@men.de>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("MCB over LPC support"); diff --git a/drivers/mcb/mcb-parse.c b/drivers/mcb/mcb-parse.c index dbecbed..4ca2739 100644 --- a/drivers/mcb/mcb-parse.c +++ b/drivers/mcb/mcb-parse.c @@ -26,19 +26,20 @@ static inline uint32_t get_next_dtype(void __iomem *p) } static int chameleon_parse_bdd(struct mcb_bus *bus, - phys_addr_t mapbase, + struct chameleon_bar *cb, void __iomem *base) { return 0; } static int chameleon_parse_gdd(struct mcb_bus *bus, - phys_addr_t mapbase, - void __iomem *base) + struct chameleon_bar *cb, + void __iomem *base, int bar_count) { struct chameleon_gdd __iomem *gdd = (struct chameleon_gdd __iomem *) base; struct mcb_device *mdev; + u32 dev_mapbase; u32 offset; u32 size; int ret; @@ -61,13 +62,39 @@ static int chameleon_parse_gdd(struct mcb_bus *bus, mdev->group = GDD_GRP(reg2); mdev->inst = GDD_INS(reg2); + /* + * If the BAR is missing, dev_mapbase is zero, or if the + * device is IO mapped we just print a warning and go on with the + * next device, instead of completely stop the gdd parser + */ + if (mdev->bar > bar_count - 1) { + pr_info("No BAR for 16z%03d\n", mdev->id); + ret = 0; + goto err; + } + + dev_mapbase = cb[mdev->bar].addr; + if (!dev_mapbase) { + pr_info("BAR not assigned for 16z%03d\n", mdev->id); + ret = 0; + goto err; + } + + if (dev_mapbase & 0x01) { + pr_info("IO mapped Device (16z%03d) not yet supported\n", + mdev->id); + ret = 0; + goto err; + } + pr_debug("Found a 16z%03d\n", mdev->id); mdev->irq.start = GDD_IRQ(reg1); mdev->irq.end = GDD_IRQ(reg1); mdev->irq.flags = IORESOURCE_IRQ; - mdev->mem.start = mapbase + offset; + mdev->mem.start = dev_mapbase + offset; + mdev->mem.end = mdev->mem.start + size - 1; mdev->mem.flags = IORESOURCE_MEM; @@ -85,13 +112,76 @@ err: return ret; } +static void chameleon_parse_bar(void __iomem *base, + struct chameleon_bar *cb, int bar_count) +{ + char __iomem *p = base; + int i; + + /* skip reg1 */ + p += sizeof(__le32); + + for (i = 0; i < bar_count; i++) { + cb[i].addr = readl(p); + cb[i].size = readl(p + 4); + + p += sizeof(struct chameleon_bar); + } +} + +static int chameleon_get_bar(char __iomem **base, phys_addr_t mapbase, + struct chameleon_bar **cb) +{ + struct chameleon_bar *c; + int bar_count; + __le32 reg; + u32 dtype; + + /* + * For those devices which are not connected + * to the PCI Bus (e.g. LPC) there is a bar + * descriptor located directly after the + * chameleon header. This header is comparable + * to a PCI header. + */ + dtype = get_next_dtype(*base); + if (dtype == CHAMELEON_DTYPE_BAR) { + reg = readl(*base); + + bar_count = BAR_CNT(reg); + if (bar_count <= 0 && bar_count > CHAMELEON_BAR_MAX) + return -ENODEV; + + c = kcalloc(bar_count, sizeof(struct chameleon_bar), + GFP_KERNEL); + if (!c) + return -ENOMEM; + + chameleon_parse_bar(*base, c, bar_count); + *base += BAR_DESC_SIZE(bar_count); + } else { + c = kzalloc(sizeof(struct chameleon_bar), GFP_KERNEL); + if (!c) + return -ENOMEM; + + bar_count = 1; + c->addr = mapbase; + } + + *cb = c; + + return bar_count; +} + int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase, void __iomem *base) { - char __iomem *p = base; struct chameleon_fpga_header *header; - uint32_t dtype; + struct chameleon_bar *cb; + char __iomem *p = base; int num_cells = 0; + uint32_t dtype; + int bar_count; int ret = 0; u32 hsize; @@ -108,8 +198,8 @@ int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase, if (header->magic != CHAMELEONV2_MAGIC) { pr_err("Unsupported chameleon version 0x%x\n", header->magic); - kfree(header); - return -ENODEV; + ret = -ENODEV; + goto free_header; } p += hsize; @@ -119,16 +209,20 @@ int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase, snprintf(bus->name, CHAMELEON_FILENAME_LEN + 1, "%s", header->filename); + bar_count = chameleon_get_bar(&p, mapbase, &cb); + if (bar_count < 0) + goto free_header; + for_each_chameleon_cell(dtype, p) { switch (dtype) { case CHAMELEON_DTYPE_GENERAL: - ret = chameleon_parse_gdd(bus, mapbase, p); + ret = chameleon_parse_gdd(bus, cb, p, bar_count); if (ret < 0) - goto out; + goto free_bar; p += sizeof(struct chameleon_gdd); break; case CHAMELEON_DTYPE_BRIDGE: - chameleon_parse_bdd(bus, mapbase, p); + chameleon_parse_bdd(bus, cb, p); p += sizeof(struct chameleon_bdd); break; case CHAMELEON_DTYPE_END: @@ -136,8 +230,8 @@ int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase, default: pr_err("Invalid chameleon descriptor type 0x%x\n", dtype); - kfree(header); - return -EINVAL; + ret = -EINVAL; + goto free_bar; } num_cells++; } @@ -145,11 +239,15 @@ int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase, if (num_cells == 0) num_cells = -EINVAL; + kfree(cb); kfree(header); return num_cells; -out: +free_bar: + kfree(cb); +free_header: kfree(header); + return ret; } EXPORT_SYMBOL_GPL(chameleon_parse_cells); diff --git a/drivers/mcb/mcb-pci.c b/drivers/mcb/mcb-pci.c index b15a034..af4d2f2 100644 --- a/drivers/mcb/mcb-pci.c +++ b/drivers/mcb/mcb-pci.c @@ -46,6 +46,7 @@ static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) dev_err(&pdev->dev, "Failed to enable PCI device\n"); return -ENODEV; } + pci_set_master(pdev); priv->mapbase = pci_resource_start(pdev, 0); if (!priv->mapbase) { diff --git a/drivers/memory/of_memory.c b/drivers/memory/of_memory.c index 9daf94b..568f05e 100644 --- a/drivers/memory/of_memory.c +++ b/drivers/memory/of_memory.c @@ -16,6 +16,7 @@ #include <linux/gfp.h> #include <memory/jedec_ddr.h> #include <linux/export.h> +#include "of_memory.h" /** * of_get_min_tck() - extract min timing values for ddr diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index d002528..64971ba 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -429,34 +429,6 @@ config ARM_CHARLCD line and the Linux version on the second line, but that's still useful. -config BMP085 - tristate - depends on SYSFS - -config BMP085_I2C - tristate "BMP085 digital pressure sensor on I2C" - select BMP085 - select REGMAP_I2C - depends on I2C && SYSFS - help - Say Y here if you want to support Bosch Sensortec's digital pressure - sensor hooked to an I2C bus. - - To compile this driver as a module, choose M here: the - module will be called bmp085-i2c. - -config BMP085_SPI - tristate "BMP085 digital pressure sensor on SPI" - select BMP085 - select REGMAP_SPI - depends on SPI_MASTER && SYSFS - help - Say Y here if you want to support Bosch Sensortec's digital pressure - sensor hooked to an SPI bus. - - To compile this driver as a module, choose M here: the - module will be called bmp085-spi. - config PCH_PHUB tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) PHUB" select GENERIC_NET_UTILS diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index fb32516..3198336 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -9,9 +9,6 @@ obj-$(CONFIG_AD525X_DPOT_SPI) += ad525x_dpot-spi.o obj-$(CONFIG_INTEL_MID_PTI) += pti.o obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o -obj-$(CONFIG_BMP085) += bmp085.o -obj-$(CONFIG_BMP085_I2C) += bmp085-i2c.o -obj-$(CONFIG_BMP085_SPI) += bmp085-spi.o obj-$(CONFIG_DUMMY_IRQ) += dummy-irq.o obj-$(CONFIG_ICS932S401) += ics932s401.o obj-$(CONFIG_LKDTM) += lkdtm.o diff --git a/drivers/misc/bmp085-i2c.c b/drivers/misc/bmp085-i2c.c deleted file mode 100644 index f35c218..0000000 --- a/drivers/misc/bmp085-i2c.c +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright (c) 2012 Bosch Sensortec GmbH - * Copyright (c) 2012 Unixphere AB - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/module.h> -#include <linux/i2c.h> -#include <linux/err.h> -#include "bmp085.h" - -#define BMP085_I2C_ADDRESS 0x77 - -static const unsigned short normal_i2c[] = { BMP085_I2C_ADDRESS, - I2C_CLIENT_END }; - -static int bmp085_i2c_detect(struct i2c_client *client, - struct i2c_board_info *info) -{ - if (client->addr != BMP085_I2C_ADDRESS) - return -ENODEV; - - return bmp085_detect(&client->dev); -} - -static int bmp085_i2c_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - int err; - struct regmap *regmap = devm_regmap_init_i2c(client, - &bmp085_regmap_config); - - if (IS_ERR(regmap)) { - err = PTR_ERR(regmap); - dev_err(&client->dev, "Failed to init regmap: %d\n", err); - return err; - } - - return bmp085_probe(&client->dev, regmap, client->irq); -} - -static int bmp085_i2c_remove(struct i2c_client *client) -{ - return bmp085_remove(&client->dev); -} - -static const struct i2c_device_id bmp085_id[] = { - { BMP085_NAME, 0 }, - { "bmp180", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, bmp085_id); - -static struct i2c_driver bmp085_i2c_driver = { - .driver = { - .name = BMP085_NAME, - }, - .id_table = bmp085_id, - .probe = bmp085_i2c_probe, - .remove = bmp085_i2c_remove, - - .detect = bmp085_i2c_detect, - .address_list = normal_i2c -}; - -module_i2c_driver(bmp085_i2c_driver); - -MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>"); -MODULE_DESCRIPTION("BMP085 I2C bus driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/misc/bmp085-spi.c b/drivers/misc/bmp085-spi.c deleted file mode 100644 index 17ecbf9..0000000 --- a/drivers/misc/bmp085-spi.c +++ /dev/null @@ -1,79 +0,0 @@ -/* - * Copyright (c) 2012 Bosch Sensortec GmbH - * Copyright (c) 2012 Unixphere AB - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/module.h> -#include <linux/spi/spi.h> -#include <linux/err.h> -#include "bmp085.h" - -static int bmp085_spi_probe(struct spi_device *client) -{ - int err; - struct regmap *regmap; - - client->bits_per_word = 8; - err = spi_setup(client); - if (err < 0) { - dev_err(&client->dev, "spi_setup failed!\n"); - return err; - } - - regmap = devm_regmap_init_spi(client, &bmp085_regmap_config); - if (IS_ERR(regmap)) { - err = PTR_ERR(regmap); - dev_err(&client->dev, "Failed to init regmap: %d\n", err); - return err; - } - - return bmp085_probe(&client->dev, regmap, client->irq); -} - -static int bmp085_spi_remove(struct spi_device *client) -{ - return bmp085_remove(&client->dev); -} - -static const struct of_device_id bmp085_of_match[] = { - { .compatible = "bosch,bmp085", }, - { }, -}; -MODULE_DEVICE_TABLE(of, bmp085_of_match); - -static const struct spi_device_id bmp085_id[] = { - { "bmp180", 0 }, - { "bmp181", 0 }, - { } -}; -MODULE_DEVICE_TABLE(spi, bmp085_id); - -static struct spi_driver bmp085_spi_driver = { - .driver = { - .name = BMP085_NAME, - .of_match_table = bmp085_of_match - }, - .id_table = bmp085_id, - .probe = bmp085_spi_probe, - .remove = bmp085_spi_remove -}; - -module_spi_driver(bmp085_spi_driver); - -MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>"); -MODULE_DESCRIPTION("BMP085 SPI bus driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/misc/bmp085.c b/drivers/misc/bmp085.c deleted file mode 100644 index 9b313f7..0000000 --- a/drivers/misc/bmp085.c +++ /dev/null @@ -1,506 +0,0 @@ -/* Copyright (c) 2010 Christoph Mair <christoph.mair@gmail.com> - * Copyright (c) 2012 Bosch Sensortec GmbH - * Copyright (c) 2012 Unixphere AB - * - * This driver supports the bmp085 and bmp18x digital barometric pressure - * and temperature sensors from Bosch Sensortec. The datasheets - * are available from their website: - * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMP085-DS000-05.pdf - * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMP180-DS000-07.pdf - * - * A pressure measurement is issued by reading from pressure0_input. - * The return value ranges from 30000 to 110000 pascal with a resulution - * of 1 pascal (0.01 millibar) which enables measurements from 9000m above - * to 500m below sea level. - * - * The temperature can be read from temp0_input. Values range from - * -400 to 850 representing the ambient temperature in degree celsius - * multiplied by 10.The resolution is 0.1 celsius. - * - * Because ambient pressure is temperature dependent, a temperature - * measurement will be executed automatically even if the user is reading - * from pressure0_input. This happens if the last temperature measurement - * has been executed more then one second ago. - * - * To decrease RMS noise from pressure measurements, the bmp085 can - * autonomously calculate the average of up to eight samples. This is - * set up by writing to the oversampling sysfs file. Accepted values - * are 0, 1, 2 and 3. 2^x when x is the value written to this file - * specifies the number of samples used to calculate the ambient pressure. - * RMS noise is specified with six pascal (without averaging) and decreases - * down to 3 pascal when using an oversampling setting of 3. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/module.h> -#include <linux/device.h> -#include <linux/slab.h> -#include <linux/of.h> -#include "bmp085.h" -#include <linux/interrupt.h> -#include <linux/completion.h> -#include <linux/gpio.h> - -#define BMP085_CHIP_ID 0x55 -#define BMP085_CALIBRATION_DATA_START 0xAA -#define BMP085_CALIBRATION_DATA_LENGTH 11 /* 16 bit values */ -#define BMP085_CHIP_ID_REG 0xD0 -#define BMP085_CTRL_REG 0xF4 -#define BMP085_TEMP_MEASUREMENT 0x2E -#define BMP085_PRESSURE_MEASUREMENT 0x34 -#define BMP085_CONVERSION_REGISTER_MSB 0xF6 -#define BMP085_CONVERSION_REGISTER_LSB 0xF7 -#define BMP085_CONVERSION_REGISTER_XLSB 0xF8 -#define BMP085_TEMP_CONVERSION_TIME 5 - -struct bmp085_calibration_data { - s16 AC1, AC2, AC3; - u16 AC4, AC5, AC6; - s16 B1, B2; - s16 MB, MC, MD; -}; - -struct bmp085_data { - struct device *dev; - struct regmap *regmap; - struct mutex lock; - struct bmp085_calibration_data calibration; - u8 oversampling_setting; - u32 raw_temperature; - u32 raw_pressure; - u32 temp_measurement_period; - unsigned long last_temp_measurement; - u8 chip_id; - s32 b6; /* calculated temperature correction coefficient */ - int irq; - struct completion done; -}; - -static irqreturn_t bmp085_eoc_isr(int irq, void *devid) -{ - struct bmp085_data *data = devid; - - complete(&data->done); - - return IRQ_HANDLED; -} - -static s32 bmp085_read_calibration_data(struct bmp085_data *data) -{ - u16 tmp[BMP085_CALIBRATION_DATA_LENGTH]; - struct bmp085_calibration_data *cali = &(data->calibration); - s32 status = regmap_bulk_read(data->regmap, - BMP085_CALIBRATION_DATA_START, (u8 *)tmp, - (BMP085_CALIBRATION_DATA_LENGTH << 1)); - if (status < 0) - return status; - - cali->AC1 = be16_to_cpu(tmp[0]); - cali->AC2 = be16_to_cpu(tmp[1]); - cali->AC3 = be16_to_cpu(tmp[2]); - cali->AC4 = be16_to_cpu(tmp[3]); - cali->AC5 = be16_to_cpu(tmp[4]); - cali->AC6 = be16_to_cpu(tmp[5]); - cali->B1 = be16_to_cpu(tmp[6]); - cali->B2 = be16_to_cpu(tmp[7]); - cali->MB = be16_to_cpu(tmp[8]); - cali->MC = be16_to_cpu(tmp[9]); - cali->MD = be16_to_cpu(tmp[10]); - return 0; -} - -static s32 bmp085_update_raw_temperature(struct bmp085_data *data) -{ - u16 tmp; - s32 status; - - mutex_lock(&data->lock); - - init_completion(&data->done); - - status = regmap_write(data->regmap, BMP085_CTRL_REG, - BMP085_TEMP_MEASUREMENT); - if (status < 0) { - dev_err(data->dev, - "Error while requesting temperature measurement.\n"); - goto exit; - } - wait_for_completion_timeout(&data->done, 1 + msecs_to_jiffies( - BMP085_TEMP_CONVERSION_TIME)); - - status = regmap_bulk_read(data->regmap, BMP085_CONVERSION_REGISTER_MSB, - &tmp, sizeof(tmp)); - if (status < 0) { - dev_err(data->dev, - "Error while reading temperature measurement result\n"); - goto exit; - } - data->raw_temperature = be16_to_cpu(tmp); - data->last_temp_measurement = jiffies; - status = 0; /* everything ok, return 0 */ - -exit: - mutex_unlock(&data->lock); - return status; -} - -static s32 bmp085_update_raw_pressure(struct bmp085_data *data) -{ - u32 tmp = 0; - s32 status; - - mutex_lock(&data->lock); - - init_completion(&data->done); - - status = regmap_write(data->regmap, BMP085_CTRL_REG, - BMP085_PRESSURE_MEASUREMENT + - (data->oversampling_setting << 6)); - if (status < 0) { - dev_err(data->dev, - "Error while requesting pressure measurement.\n"); - goto exit; - } - - /* wait for the end of conversion */ - wait_for_completion_timeout(&data->done, 1 + msecs_to_jiffies( - 2+(3 << data->oversampling_setting))); - /* copy data into a u32 (4 bytes), but skip the first byte. */ - status = regmap_bulk_read(data->regmap, BMP085_CONVERSION_REGISTER_MSB, - ((u8 *)&tmp)+1, 3); - if (status < 0) { - dev_err(data->dev, - "Error while reading pressure measurement results\n"); - goto exit; - } - data->raw_pressure = be32_to_cpu((tmp)); - data->raw_pressure >>= (8-data->oversampling_setting); - status = 0; /* everything ok, return 0 */ - -exit: - mutex_unlock(&data->lock); - return status; -} - -/* - * This function starts the temperature measurement and returns the value - * in tenth of a degree celsius. - */ -static s32 bmp085_get_temperature(struct bmp085_data *data, int *temperature) -{ - struct bmp085_calibration_data *cali = &data->calibration; - long x1, x2; - int status; - - status = bmp085_update_raw_temperature(data); - if (status < 0) - goto exit; - - x1 = ((data->raw_temperature - cali->AC6) * cali->AC5) >> 15; - x2 = (cali->MC << 11) / (x1 + cali->MD); - data->b6 = x1 + x2 - 4000; - /* if NULL just update b6. Used for pressure only measurements */ - if (temperature != NULL) - *temperature = (x1+x2+8) >> 4; - -exit: - return status; -} - -/* - * This function starts the pressure measurement and returns the value - * in millibar. Since the pressure depends on the ambient temperature, - * a temperature measurement is executed according to the given temperature - * measurement period (default is 1 sec boundary). This period could vary - * and needs to be adjusted according to the sensor environment, i.e. if big - * temperature variations then the temperature needs to be read out often. - */ -static s32 bmp085_get_pressure(struct bmp085_data *data, int *pressure) -{ - struct bmp085_calibration_data *cali = &data->calibration; - s32 x1, x2, x3, b3; - u32 b4, b7; - s32 p; - int status; - - /* alt least every second force an update of the ambient temperature */ - if ((data->last_temp_measurement == 0) || - time_is_before_jiffies(data->last_temp_measurement + 1*HZ)) { - status = bmp085_get_temperature(data, NULL); - if (status < 0) - return status; - } - - status = bmp085_update_raw_pressure(data); - if (status < 0) - return status; - - x1 = (data->b6 * data->b6) >> 12; - x1 *= cali->B2; - x1 >>= 11; - - x2 = cali->AC2 * data->b6; - x2 >>= 11; - - x3 = x1 + x2; - - b3 = (((((s32)cali->AC1) * 4 + x3) << data->oversampling_setting) + 2); - b3 >>= 2; - - x1 = (cali->AC3 * data->b6) >> 13; - x2 = (cali->B1 * ((data->b6 * data->b6) >> 12)) >> 16; - x3 = (x1 + x2 + 2) >> 2; - b4 = (cali->AC4 * (u32)(x3 + 32768)) >> 15; - - b7 = ((u32)data->raw_pressure - b3) * - (50000 >> data->oversampling_setting); - p = ((b7 < 0x80000000) ? ((b7 << 1) / b4) : ((b7 / b4) * 2)); - - x1 = p >> 8; - x1 *= x1; - x1 = (x1 * 3038) >> 16; - x2 = (-7357 * p) >> 16; - p += (x1 + x2 + 3791) >> 4; - - *pressure = p; - - return 0; -} - -/* - * This function sets the chip-internal oversampling. Valid values are 0..3. - * The chip will use 2^oversampling samples for internal averaging. - * This influences the measurement time and the accuracy; larger values - * increase both. The datasheet gives an overview on how measurement time, - * accuracy and noise correlate. - */ -static void bmp085_set_oversampling(struct bmp085_data *data, - unsigned char oversampling) -{ - if (oversampling > 3) - oversampling = 3; - data->oversampling_setting = oversampling; -} - -/* - * Returns the currently selected oversampling. Range: 0..3 - */ -static unsigned char bmp085_get_oversampling(struct bmp085_data *data) -{ - return data->oversampling_setting; -} - -/* sysfs callbacks */ -static ssize_t set_oversampling(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct bmp085_data *data = dev_get_drvdata(dev); - unsigned long oversampling; - int err = kstrtoul(buf, 10, &oversampling); - - if (err == 0) { - mutex_lock(&data->lock); - bmp085_set_oversampling(data, oversampling); - mutex_unlock(&data->lock); - return count; - } - - return err; -} - -static ssize_t show_oversampling(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct bmp085_data *data = dev_get_drvdata(dev); - - return sprintf(buf, "%u\n", bmp085_get_oversampling(data)); -} -static DEVICE_ATTR(oversampling, S_IWUSR | S_IRUGO, - show_oversampling, set_oversampling); - - -static ssize_t show_temperature(struct device *dev, - struct device_attribute *attr, char *buf) -{ - int temperature; - int status; - struct bmp085_data *data = dev_get_drvdata(dev); - - status = bmp085_get_temperature(data, &temperature); - if (status < 0) - return status; - else - return sprintf(buf, "%d\n", temperature); -} -static DEVICE_ATTR(temp0_input, S_IRUGO, show_temperature, NULL); - - -static ssize_t show_pressure(struct device *dev, - struct device_attribute *attr, char *buf) -{ - int pressure; - int status; - struct bmp085_data *data = dev_get_drvdata(dev); - - status = bmp085_get_pressure(data, &pressure); - if (status < 0) - return status; - else - return sprintf(buf, "%d\n", pressure); -} -static DEVICE_ATTR(pressure0_input, S_IRUGO, show_pressure, NULL); - - -static struct attribute *bmp085_attributes[] = { - &dev_attr_temp0_input.attr, - &dev_attr_pressure0_input.attr, - &dev_attr_oversampling.attr, - NULL -}; - -static const struct attribute_group bmp085_attr_group = { - .attrs = bmp085_attributes, -}; - -int bmp085_detect(struct device *dev) -{ - struct bmp085_data *data = dev_get_drvdata(dev); - unsigned int id; - int ret; - - ret = regmap_read(data->regmap, BMP085_CHIP_ID_REG, &id); - if (ret < 0) - return ret; - - if (id != data->chip_id) - return -ENODEV; - - return 0; -} -EXPORT_SYMBOL_GPL(bmp085_detect); - -static void bmp085_get_of_properties(struct bmp085_data *data) -{ -#ifdef CONFIG_OF - struct device_node *np = data->dev->of_node; - u32 prop; - - if (!np) - return; - - if (!of_property_read_u32(np, "chip-id", &prop)) - data->chip_id = prop & 0xff; - - if (!of_property_read_u32(np, "temp-measurement-period", &prop)) - data->temp_measurement_period = (prop/100)*HZ; - - if (!of_property_read_u32(np, "default-oversampling", &prop)) - data->oversampling_setting = prop & 0xff; -#endif -} - -static int bmp085_init_client(struct bmp085_data *data) -{ - int status = bmp085_read_calibration_data(data); - - if (status < 0) - return status; - - /* default settings */ - data->chip_id = BMP085_CHIP_ID; - data->last_temp_measurement = 0; - data->temp_measurement_period = 1*HZ; - data->oversampling_setting = 3; - - bmp085_get_of_properties(data); - - mutex_init(&data->lock); - - return 0; -} - -struct regmap_config bmp085_regmap_config = { - .reg_bits = 8, - .val_bits = 8 -}; -EXPORT_SYMBOL_GPL(bmp085_regmap_config); - -int bmp085_probe(struct device *dev, struct regmap *regmap, int irq) -{ - struct bmp085_data *data; - int err = 0; - - data = kzalloc(sizeof(struct bmp085_data), GFP_KERNEL); - if (!data) { - err = -ENOMEM; - goto exit; - } - - dev_set_drvdata(dev, data); - data->dev = dev; - data->regmap = regmap; - data->irq = irq; - - if (data->irq > 0) { - err = devm_request_irq(dev, data->irq, bmp085_eoc_isr, - IRQF_TRIGGER_RISING, "bmp085", - data); - if (err < 0) - goto exit_free; - } - - /* Initialize the BMP085 chip */ - err = bmp085_init_client(data); - if (err < 0) - goto exit_free; - - err = bmp085_detect(dev); - if (err < 0) { - dev_err(dev, "%s: chip_id failed!\n", BMP085_NAME); - goto exit_free; - } - - /* Register sysfs hooks */ - err = sysfs_create_group(&dev->kobj, &bmp085_attr_group); - if (err) - goto exit_free; - - dev_info(dev, "Successfully initialized %s!\n", BMP085_NAME); - - return 0; - -exit_free: - kfree(data); -exit: - return err; -} -EXPORT_SYMBOL_GPL(bmp085_probe); - -int bmp085_remove(struct device *dev) -{ - struct bmp085_data *data = dev_get_drvdata(dev); - - sysfs_remove_group(&data->dev->kobj, &bmp085_attr_group); - kfree(data); - - return 0; -} -EXPORT_SYMBOL_GPL(bmp085_remove); - -MODULE_AUTHOR("Christoph Mair <christoph.mair@gmail.com>"); -MODULE_DESCRIPTION("BMP085 driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/misc/bmp085.h b/drivers/misc/bmp085.h deleted file mode 100644 index 8b8e3b1..0000000 --- a/drivers/misc/bmp085.h +++ /dev/null @@ -1,33 +0,0 @@ -/* - * Copyright (c) 2012 Bosch Sensortec GmbH - * Copyright (c) 2012 Unixphere AB - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifndef _BMP085_H -#define _BMP085_H - -#include <linux/regmap.h> - -#define BMP085_NAME "bmp085" - -extern struct regmap_config bmp085_regmap_config; - -int bmp085_probe(struct device *dev, struct regmap *regmap, int irq); -int bmp085_remove(struct device *dev); -int bmp085_detect(struct device *dev); - -#endif diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c index 2c6c7c8..5afe4cd 100644 --- a/drivers/misc/eeprom/at25.c +++ b/drivers/misc/eeprom/at25.c @@ -121,9 +121,8 @@ static int at25_ee_read(void *priv, unsigned int offset, * this chip is clocked very slowly */ status = spi_sync(at25->spi, &m); - dev_dbg(&at25->spi->dev, - "read %Zd bytes at %d --> %d\n", - count, offset, (int) status); + dev_dbg(&at25->spi->dev, "read %zu bytes at %d --> %zd\n", + count, offset, status); mutex_unlock(&at25->lock); return status; @@ -167,8 +166,7 @@ static int at25_ee_write(void *priv, unsigned int off, void *val, size_t count) *cp = AT25_WREN; status = spi_write(at25->spi, cp, 1); if (status < 0) { - dev_dbg(&at25->spi->dev, "WREN --> %d\n", - (int) status); + dev_dbg(&at25->spi->dev, "WREN --> %d\n", status); break; } @@ -196,9 +194,8 @@ static int at25_ee_write(void *priv, unsigned int off, void *val, size_t count) memcpy(cp, buf, segment); status = spi_write(at25->spi, bounce, segment + at25->addrlen + 1); - dev_dbg(&at25->spi->dev, - "write %u bytes at %u --> %d\n", - segment, offset, (int) status); + dev_dbg(&at25->spi->dev, "write %u bytes at %u --> %d\n", + segment, offset, status); if (status < 0) break; @@ -225,8 +222,7 @@ static int at25_ee_write(void *priv, unsigned int off, void *val, size_t count) if ((sr < 0) || (sr & AT25_SR_nRDY)) { dev_err(&at25->spi->dev, - "write %d bytes offset %d, " - "timeout after %u msecs\n", + "write %u bytes offset %u, timeout after %u msecs\n", segment, offset, jiffies_to_msecs(jiffies - (timeout - EE_TIMEOUT))); @@ -368,9 +364,7 @@ static int at25_probe(struct spi_device *spi) return PTR_ERR(at25->nvmem); dev_info(&spi->dev, "%d %s %s eeprom%s, pagesize %u\n", - (chip.byte_len < 1024) - ? chip.byte_len - : (chip.byte_len / 1024), + (chip.byte_len < 1024) ? chip.byte_len : (chip.byte_len / 1024), (chip.byte_len < 1024) ? "Byte" : "KByte", at25->chip.name, (chip.flags & EE_READONLY) ? " (readonly)" : "", diff --git a/drivers/misc/genwqe/card_base.c b/drivers/misc/genwqe/card_base.c index a70b853..6c1f49a 100644 --- a/drivers/misc/genwqe/card_base.c +++ b/drivers/misc/genwqe/card_base.c @@ -1351,6 +1351,19 @@ static struct pci_driver genwqe_driver = { }; /** + * genwqe_devnode() - Set default access mode for genwqe devices. + * + * Default mode should be rw for everybody. Do not change default + * device name. + */ +static char *genwqe_devnode(struct device *dev, umode_t *mode) +{ + if (mode) + *mode = 0666; + return NULL; +} + +/** * genwqe_init_module() - Driver registration and initialization */ static int __init genwqe_init_module(void) @@ -1363,6 +1376,8 @@ static int __init genwqe_init_module(void) return -ENOMEM; } + class_genwqe->devnode = genwqe_devnode; + debugfs_genwqe = debugfs_create_dir(GENWQE_DEVNAME, NULL); if (!debugfs_genwqe) { rc = -ENOMEM; diff --git a/drivers/misc/genwqe/card_ddcb.c b/drivers/misc/genwqe/card_ddcb.c index 353ee0c..ddfeefe 100644 --- a/drivers/misc/genwqe/card_ddcb.c +++ b/drivers/misc/genwqe/card_ddcb.c @@ -1048,8 +1048,6 @@ static int setup_ddcb_queue(struct genwqe_dev *cd, struct ddcb_queue *queue) "[%s] **err: could not allocate DDCB **\n", __func__); return -ENOMEM; } - memset(queue->ddcb_vaddr, 0, queue_size); - queue->ddcb_req = kzalloc(sizeof(struct ddcb_requ *) * queue->ddcb_max, GFP_KERNEL); if (!queue->ddcb_req) { diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c index 222367c..8a679ec 100644 --- a/drivers/misc/genwqe/card_utils.c +++ b/drivers/misc/genwqe/card_utils.c @@ -220,8 +220,8 @@ void *__genwqe_alloc_consistent(struct genwqe_dev *cd, size_t size, if (get_order(size) > MAX_ORDER) return NULL; - return dma_alloc_coherent(&cd->pci_dev->dev, size, dma_handle, - GFP_KERNEL); + return dma_zalloc_coherent(&cd->pci_dev->dev, size, dma_handle, + GFP_KERNEL); } void __genwqe_free_consistent(struct genwqe_dev *cd, size_t size, diff --git a/drivers/misc/hpilo.c b/drivers/misc/hpilo.c index d6a901c..fea8ff4 100644 --- a/drivers/misc/hpilo.c +++ b/drivers/misc/hpilo.c @@ -688,7 +688,8 @@ static void ilo_unmap_device(struct pci_dev *pdev, struct ilo_hwinfo *hw) static int ilo_map_device(struct pci_dev *pdev, struct ilo_hwinfo *hw) { - int error = -ENOMEM; + int bar; + unsigned long off; /* map the memory mapped i/o registers */ hw->mmio_vaddr = pci_iomap(pdev, 1, 0); @@ -698,7 +699,15 @@ static int ilo_map_device(struct pci_dev *pdev, struct ilo_hwinfo *hw) } /* map the adapter shared memory region */ - hw->ram_vaddr = pci_iomap(pdev, 2, max_ccb * ILOHW_CCB_SZ); + if (pdev->subsystem_device == 0x00E4) { + bar = 5; + /* Last 8k is reserved for CCBs */ + off = pci_resource_len(pdev, bar) - 0x2000; + } else { + bar = 2; + off = 0; + } + hw->ram_vaddr = pci_iomap_range(pdev, bar, off, max_ccb * ILOHW_CCB_SZ); if (hw->ram_vaddr == NULL) { dev_err(&pdev->dev, "Error mapping shared mem\n"); goto mmio_free; @@ -717,7 +726,7 @@ ram_free: mmio_free: pci_iounmap(pdev, hw->mmio_vaddr); out: - return error; + return -ENOMEM; } static void ilo_remove(struct pci_dev *pdev) @@ -899,7 +908,7 @@ static void __exit ilo_exit(void) class_destroy(ilo_class); } -MODULE_VERSION("1.4.1"); +MODULE_VERSION("1.5.0"); MODULE_ALIAS(ILO_NAME); MODULE_DESCRIPTION(ILO_NAME); MODULE_AUTHOR("David Altobelli <david.altobelli@hpe.com>"); diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c index a039a5d..7ae89b4 100644 --- a/drivers/misc/mei/amthif.c +++ b/drivers/misc/mei/amthif.c @@ -47,7 +47,6 @@ const uuid_le mei_amthif_guid = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, void mei_amthif_reset_params(struct mei_device *dev) { /* reset iamthif parameters. */ - dev->iamthif_current_cb = NULL; dev->iamthif_canceled = false; dev->iamthif_state = MEI_IAMTHIF_IDLE; dev->iamthif_stall_timer = 0; @@ -67,8 +66,12 @@ int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl) struct mei_cl *cl = &dev->iamthif_cl; int ret; - if (mei_cl_is_connected(cl)) - return 0; + mutex_lock(&dev->device_lock); + + if (mei_cl_is_connected(cl)) { + ret = 0; + goto out; + } dev->iamthif_state = MEI_IAMTHIF_IDLE; @@ -77,179 +80,37 @@ int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl) ret = mei_cl_link(cl); if (ret < 0) { dev_err(dev->dev, "amthif: failed cl_link %d\n", ret); - return ret; + goto out; } ret = mei_cl_connect(cl, me_cl, NULL); - return ret; -} - -/** - * mei_amthif_read - read data from AMTHIF client - * - * @dev: the device structure - * @file: pointer to file object - * @ubuf: pointer to user data in user space - * @length: data length to read - * @offset: data read offset - * - * Locking: called under "dev->device_lock" lock - * - * Return: - * returned data length on success, - * zero if no data to read, - * negative on failure. - */ -int mei_amthif_read(struct mei_device *dev, struct file *file, - char __user *ubuf, size_t length, loff_t *offset) -{ - struct mei_cl *cl = file->private_data; - struct mei_cl_cb *cb; - int rets; - int wait_ret; - - dev_dbg(dev->dev, "checking amthif data\n"); - cb = mei_cl_read_cb(cl, file); - - /* Check for if we can block or not*/ - if (cb == NULL && file->f_flags & O_NONBLOCK) - return -EAGAIN; - - - dev_dbg(dev->dev, "waiting for amthif data\n"); - while (cb == NULL) { - /* unlock the Mutex */ - mutex_unlock(&dev->device_lock); - - wait_ret = wait_event_interruptible(cl->rx_wait, - !list_empty(&cl->rd_completed) || - !mei_cl_is_connected(cl)); - - /* Locking again the Mutex */ - mutex_lock(&dev->device_lock); - - if (wait_ret) - return -ERESTARTSYS; - - if (!mei_cl_is_connected(cl)) { - rets = -EBUSY; - goto out; - } - - cb = mei_cl_read_cb(cl, file); - } - - if (cb->status) { - rets = cb->status; - dev_dbg(dev->dev, "read operation failed %d\n", rets); - goto free; - } - - dev_dbg(dev->dev, "Got amthif data\n"); - /* if the whole message will fit remove it from the list */ - if (cb->buf_idx >= *offset && length >= (cb->buf_idx - *offset)) - list_del_init(&cb->list); - else if (cb->buf_idx <= *offset) { - /* end of the message has been reached */ - list_del_init(&cb->list); - rets = 0; - goto free; - } - /* else means that not full buffer will be read and do not - * remove message from deletion list - */ - - dev_dbg(dev->dev, "amthif cb->buf.size - %zu cb->buf_idx - %zu\n", - cb->buf.size, cb->buf_idx); - - /* length is being truncated to PAGE_SIZE, however, - * the buf_idx may point beyond */ - length = min_t(size_t, length, (cb->buf_idx - *offset)); - - if (copy_to_user(ubuf, cb->buf.data + *offset, length)) { - dev_dbg(dev->dev, "failed to copy data to userland\n"); - rets = -EFAULT; - } else { - rets = length; - if ((*offset + length) < cb->buf_idx) { - *offset += length; - goto out; - } - } -free: - dev_dbg(dev->dev, "free amthif cb memory.\n"); - *offset = 0; - mei_io_cb_free(cb); out: - return rets; + mutex_unlock(&dev->device_lock); + return ret; } /** * mei_amthif_read_start - queue message for sending read credential * * @cl: host client - * @file: file pointer of message recipient + * @fp: file pointer of message recipient * * Return: 0 on success, <0 on failure. */ -static int mei_amthif_read_start(struct mei_cl *cl, const struct file *file) +static int mei_amthif_read_start(struct mei_cl *cl, const struct file *fp) { struct mei_device *dev = cl->dev; struct mei_cl_cb *cb; - int rets; - - cb = mei_io_cb_init(cl, MEI_FOP_READ, file); - if (!cb) { - rets = -ENOMEM; - goto err; - } - rets = mei_io_cb_alloc_buf(cb, mei_cl_mtu(cl)); - if (rets) - goto err; + cb = mei_cl_enqueue_ctrl_wr_cb(cl, mei_cl_mtu(cl), MEI_FOP_READ, fp); + if (!cb) + return -ENOMEM; - list_add_tail(&cb->list, &dev->ctrl_wr_list.list); + cl->rx_flow_ctrl_creds++; dev->iamthif_state = MEI_IAMTHIF_READING; - dev->iamthif_fp = cb->fp; - dev->iamthif_current_cb = cb; - - return 0; -err: - mei_io_cb_free(cb); - return rets; -} - -/** - * mei_amthif_send_cmd - send amthif command to the ME - * - * @cl: the host client - * @cb: mei call back struct - * - * Return: 0 on success, <0 on failure. - */ -static int mei_amthif_send_cmd(struct mei_cl *cl, struct mei_cl_cb *cb) -{ - struct mei_device *dev; - int ret; - - if (!cl->dev || !cb) - return -ENODEV; - - dev = cl->dev; - - dev->iamthif_state = MEI_IAMTHIF_WRITING; - dev->iamthif_current_cb = cb; - dev->iamthif_fp = cb->fp; - dev->iamthif_canceled = false; - - ret = mei_cl_write(cl, cb, false); - if (ret < 0) - return ret; - - if (cb->completed) - cb->status = mei_amthif_read_start(cl, cb->fp); + cl->fp = cb->fp; return 0; } @@ -265,20 +126,32 @@ int mei_amthif_run_next_cmd(struct mei_device *dev) { struct mei_cl *cl = &dev->iamthif_cl; struct mei_cl_cb *cb; + int ret; dev->iamthif_canceled = false; - dev->iamthif_state = MEI_IAMTHIF_IDLE; - dev->iamthif_fp = NULL; dev_dbg(dev->dev, "complete amthif cmd_list cb.\n"); cb = list_first_entry_or_null(&dev->amthif_cmd_list.list, typeof(*cb), list); - if (!cb) + if (!cb) { + dev->iamthif_state = MEI_IAMTHIF_IDLE; + cl->fp = NULL; return 0; + } list_del_init(&cb->list); - return mei_amthif_send_cmd(cl, cb); + dev->iamthif_state = MEI_IAMTHIF_WRITING; + cl->fp = cb->fp; + + ret = mei_cl_write(cl, cb, false); + if (ret < 0) + return ret; + + if (cb->completed) + cb->status = mei_amthif_read_start(cl, cb->fp); + + return 0; } /** @@ -299,8 +172,7 @@ int mei_amthif_write(struct mei_cl *cl, struct mei_cl_cb *cb) /* * The previous request is still in processing, queue this one. */ - if (dev->iamthif_state > MEI_IAMTHIF_IDLE && - dev->iamthif_state < MEI_IAMTHIF_READ_COMPLETE) + if (dev->iamthif_state != MEI_IAMTHIF_IDLE) return 0; return mei_amthif_run_next_cmd(dev); @@ -309,7 +181,6 @@ int mei_amthif_write(struct mei_cl *cl, struct mei_cl_cb *cb) /** * mei_amthif_poll - the amthif poll function * - * @dev: the device structure * @file: pointer to file structure * @wait: pointer to poll_table structure * @@ -317,26 +188,19 @@ int mei_amthif_write(struct mei_cl *cl, struct mei_cl_cb *cb) * * Locking: called under "dev->device_lock" lock */ - -unsigned int mei_amthif_poll(struct mei_device *dev, - struct file *file, poll_table *wait) +unsigned int mei_amthif_poll(struct file *file, poll_table *wait) { + struct mei_cl *cl = file->private_data; + struct mei_cl_cb *cb = mei_cl_read_cb(cl, file); unsigned int mask = 0; - poll_wait(file, &dev->iamthif_cl.rx_wait, wait); - - if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE && - dev->iamthif_fp == file) { - + poll_wait(file, &cl->rx_wait, wait); + if (cb) mask |= POLLIN | POLLRDNORM; - mei_amthif_run_next_cmd(dev); - } return mask; } - - /** * mei_amthif_irq_write - write iamthif command in irq thread context. * @@ -393,7 +257,6 @@ int mei_amthif_irq_read_msg(struct mei_cl *cl, return 0; dev_dbg(dev->dev, "completed amthif read.\n "); - dev->iamthif_current_cb = NULL; dev->iamthif_stall_timer = 0; return 0; @@ -409,115 +272,63 @@ void mei_amthif_complete(struct mei_cl *cl, struct mei_cl_cb *cb) { struct mei_device *dev = cl->dev; - if (cb->fop_type == MEI_FOP_WRITE) { + dev_dbg(dev->dev, "completing amthif call back.\n"); + switch (cb->fop_type) { + case MEI_FOP_WRITE: if (!cb->status) { dev->iamthif_stall_timer = MEI_IAMTHIF_STALL_TIMER; + mei_schedule_stall_timer(dev); mei_io_cb_free(cb); return; } - /* - * in case of error enqueue the write cb to complete read list - * so it can be propagated to the reader - */ - list_add_tail(&cb->list, &cl->rd_completed); - wake_up_interruptible(&cl->rx_wait); - return; - } + dev->iamthif_state = MEI_IAMTHIF_IDLE; + cl->fp = NULL; + if (!dev->iamthif_canceled) { + /* + * in case of error enqueue the write cb to complete + * read list so it can be propagated to the reader + */ + list_add_tail(&cb->list, &cl->rd_completed); + wake_up_interruptible(&cl->rx_wait); + } else { + mei_io_cb_free(cb); + } + break; + case MEI_FOP_READ: + if (!dev->iamthif_canceled) { + list_add_tail(&cb->list, &cl->rd_completed); + dev_dbg(dev->dev, "amthif read completed\n"); + wake_up_interruptible(&cl->rx_wait); + } else { + mei_io_cb_free(cb); + } - if (!dev->iamthif_canceled) { - dev->iamthif_state = MEI_IAMTHIF_READ_COMPLETE; dev->iamthif_stall_timer = 0; - list_add_tail(&cb->list, &cl->rd_completed); - dev_dbg(dev->dev, "amthif read completed\n"); - } else { mei_amthif_run_next_cmd(dev); + break; + default: + WARN_ON(1); } - - dev_dbg(dev->dev, "completing amthif call back.\n"); - wake_up_interruptible(&cl->rx_wait); } /** * mei_clear_list - removes all callbacks associated with file * from mei_cb_list * - * @dev: device structure. * @file: file structure * @mei_cb_list: callbacks list * * mei_clear_list is called to clear resources associated with file * when application calls close function or Ctrl-C was pressed - * - * Return: true if callback removed from the list, false otherwise */ -static bool mei_clear_list(struct mei_device *dev, - const struct file *file, struct list_head *mei_cb_list) +static void mei_clear_list(const struct file *file, + struct list_head *mei_cb_list) { - struct mei_cl *cl = &dev->iamthif_cl; struct mei_cl_cb *cb, *next; - bool removed = false; - - /* list all list member */ - list_for_each_entry_safe(cb, next, mei_cb_list, list) { - /* check if list member associated with a file */ - if (file == cb->fp) { - /* check if cb equal to current iamthif cb */ - if (dev->iamthif_current_cb == cb) { - dev->iamthif_current_cb = NULL; - /* send flow control to iamthif client */ - mei_hbm_cl_flow_control_req(dev, cl); - } - /* free all allocated buffers */ - mei_io_cb_free(cb); - removed = true; - } - } - return removed; -} -/** - * mei_clear_lists - removes all callbacks associated with file - * - * @dev: device structure - * @file: file structure - * - * mei_clear_lists is called to clear resources associated with file - * when application calls close function or Ctrl-C was pressed - * - * Return: true if callback removed from the list, false otherwise - */ -static bool mei_clear_lists(struct mei_device *dev, const struct file *file) -{ - bool removed = false; - struct mei_cl *cl = &dev->iamthif_cl; - - /* remove callbacks associated with a file */ - mei_clear_list(dev, file, &dev->amthif_cmd_list.list); - if (mei_clear_list(dev, file, &cl->rd_completed)) - removed = true; - - mei_clear_list(dev, file, &dev->ctrl_rd_list.list); - - if (mei_clear_list(dev, file, &dev->ctrl_wr_list.list)) - removed = true; - - if (mei_clear_list(dev, file, &dev->write_waiting_list.list)) - removed = true; - - if (mei_clear_list(dev, file, &dev->write_list.list)) - removed = true; - - /* check if iamthif_current_cb not NULL */ - if (dev->iamthif_current_cb && !removed) { - /* check file and iamthif current cb association */ - if (dev->iamthif_current_cb->fp == file) { - /* remove cb */ - mei_io_cb_free(dev->iamthif_current_cb); - dev->iamthif_current_cb = NULL; - removed = true; - } - } - return removed; + list_for_each_entry_safe(cb, next, mei_cb_list, list) + if (file == cb->fp) + mei_io_cb_free(cb); } /** @@ -530,23 +341,21 @@ static bool mei_clear_lists(struct mei_device *dev, const struct file *file) */ int mei_amthif_release(struct mei_device *dev, struct file *file) { + struct mei_cl *cl = file->private_data; + if (dev->iamthif_open_count > 0) dev->iamthif_open_count--; - if (dev->iamthif_fp == file && - dev->iamthif_state != MEI_IAMTHIF_IDLE) { + if (cl->fp == file && dev->iamthif_state != MEI_IAMTHIF_IDLE) { dev_dbg(dev->dev, "amthif canceled iamthif state %d\n", dev->iamthif_state); dev->iamthif_canceled = true; - if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE) { - dev_dbg(dev->dev, "run next amthif iamthif cb\n"); - mei_amthif_run_next_cmd(dev); - } } - if (mei_clear_lists(dev, file)) - dev->iamthif_state = MEI_IAMTHIF_IDLE; + mei_clear_list(file, &dev->amthif_cmd_list.list); + mei_clear_list(file, &cl->rd_completed); + mei_clear_list(file, &dev->ctrl_rd_list.list); return 0; } diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 1f33fea..8cac7ef 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -126,7 +126,8 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) goto out; /* wait on event only if there is no other waiter */ - if (list_empty(&cl->rd_completed) && !waitqueue_active(&cl->rx_wait)) { + /* synchronized under device mutex */ + if (!waitqueue_active(&cl->rx_wait)) { mutex_unlock(&bus->device_lock); @@ -142,7 +143,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) mutex_lock(&bus->device_lock); if (!mei_cl_is_connected(cl)) { - rets = -EBUSY; + rets = -ENODEV; goto out; } } @@ -234,7 +235,7 @@ static void mei_cl_bus_event_work(struct work_struct *work) /* Prepare for the next read */ if (cldev->events_mask & BIT(MEI_CL_EVENT_RX)) { mutex_lock(&bus->device_lock); - mei_cl_read_start(cldev->cl, 0, NULL); + mei_cl_read_start(cldev->cl, mei_cl_mtu(cldev->cl), NULL); mutex_unlock(&bus->device_lock); } } @@ -324,7 +325,7 @@ int mei_cldev_register_event_cb(struct mei_cl_device *cldev, if (cldev->events_mask & BIT(MEI_CL_EVENT_RX)) { mutex_lock(&bus->device_lock); - ret = mei_cl_read_start(cldev->cl, 0, NULL); + ret = mei_cl_read_start(cldev->cl, mei_cl_mtu(cldev->cl), NULL); mutex_unlock(&bus->device_lock); if (ret && ret != -EBUSY) return ret; @@ -983,12 +984,10 @@ void mei_cl_bus_rescan_work(struct work_struct *work) container_of(work, struct mei_device, bus_rescan_work); struct mei_me_client *me_cl; - mutex_lock(&bus->device_lock); me_cl = mei_me_cl_by_uuid(bus, &mei_amthif_guid); if (me_cl) mei_amthif_host_init(bus, me_cl); mei_me_cl_put(me_cl); - mutex_unlock(&bus->device_lock); mei_cl_bus_rescan(bus); } diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index 641c1a5..6fe0235 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -358,8 +358,9 @@ void mei_io_cb_free(struct mei_cl_cb *cb) * * Return: mei_cl_cb pointer or NULL; */ -struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type, - const struct file *fp) +static struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, + enum mei_cb_file_ops type, + const struct file *fp) { struct mei_cl_cb *cb; @@ -420,32 +421,41 @@ static inline void mei_io_list_free(struct mei_cl_cb *list, struct mei_cl *cl) } /** - * mei_io_cb_alloc_buf - allocate callback buffer + * mei_cl_alloc_cb - a convenient wrapper for allocating read cb * - * @cb: io callback structure + * @cl: host client * @length: size of the buffer + * @type: operation type + * @fp: associated file pointer (might be NULL) * - * Return: 0 on success - * -EINVAL if cb is NULL - * -ENOMEM if allocation failed + * Return: cb on success and NULL on failure */ -int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length) +struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length, + enum mei_cb_file_ops fop_type, + const struct file *fp) { + struct mei_cl_cb *cb; + + cb = mei_io_cb_init(cl, fop_type, fp); if (!cb) - return -EINVAL; + return NULL; if (length == 0) - return 0; + return cb; cb->buf.data = kmalloc(length, GFP_KERNEL); - if (!cb->buf.data) - return -ENOMEM; + if (!cb->buf.data) { + mei_io_cb_free(cb); + return NULL; + } cb->buf.size = length; - return 0; + + return cb; } /** - * mei_cl_alloc_cb - a convenient wrapper for allocating read cb + * mei_cl_enqueue_ctrl_wr_cb - a convenient wrapper for allocating + * and enqueuing of the control commands cb * * @cl: host client * @length: size of the buffer @@ -453,22 +463,23 @@ int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length) * @fp: associated file pointer (might be NULL) * * Return: cb on success and NULL on failure + * Locking: called under "dev->device_lock" lock */ -struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length, - enum mei_cb_file_ops type, - const struct file *fp) +struct mei_cl_cb *mei_cl_enqueue_ctrl_wr_cb(struct mei_cl *cl, size_t length, + enum mei_cb_file_ops fop_type, + const struct file *fp) { struct mei_cl_cb *cb; - cb = mei_io_cb_init(cl, type, fp); - if (!cb) - return NULL; + /* for RX always allocate at least client's mtu */ + if (length) + length = max_t(size_t, length, mei_cl_mtu(cl)); - if (mei_io_cb_alloc_buf(cb, length)) { - mei_io_cb_free(cb); + cb = mei_cl_alloc_cb(cl, length, fop_type, fp); + if (!cb) return NULL; - } + list_add_tail(&cb->list, &cl->dev->ctrl_wr_list.list); return cb; } @@ -754,7 +765,8 @@ void mei_cl_set_disconnected(struct mei_cl *cl) mei_io_list_flush(&dev->ctrl_rd_list, cl); mei_io_list_flush(&dev->ctrl_wr_list, cl); mei_cl_wake_all(cl); - cl->mei_flow_ctrl_creds = 0; + cl->rx_flow_ctrl_creds = 0; + cl->tx_flow_ctrl_creds = 0; cl->timer_count = 0; if (!cl->me_cl) @@ -764,7 +776,7 @@ void mei_cl_set_disconnected(struct mei_cl *cl) cl->me_cl->connect_count--; if (cl->me_cl->connect_count == 0) - cl->me_cl->mei_flow_ctrl_creds = 0; + cl->me_cl->tx_flow_ctrl_creds = 0; mei_me_cl_put(cl->me_cl); cl->me_cl = NULL; @@ -814,6 +826,7 @@ static int mei_cl_send_disconnect(struct mei_cl *cl, struct mei_cl_cb *cb) list_move_tail(&cb->list, &dev->ctrl_rd_list.list); cl->timer_count = MEI_CONNECT_TIMEOUT; + mei_schedule_stall_timer(dev); return 0; } @@ -867,13 +880,11 @@ static int __mei_cl_disconnect(struct mei_cl *cl) cl->state = MEI_FILE_DISCONNECTING; - cb = mei_io_cb_init(cl, MEI_FOP_DISCONNECT, NULL); - rets = cb ? 0 : -ENOMEM; - if (rets) + cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_DISCONNECT, NULL); + if (!cb) { + rets = -ENOMEM; goto out; - - cl_dbg(dev, cl, "add disconnect cb to control write list\n"); - list_add_tail(&cb->list, &dev->ctrl_wr_list.list); + } if (mei_hbuf_acquire(dev)) { rets = mei_cl_send_disconnect(cl, cb); @@ -1001,6 +1012,7 @@ static int mei_cl_send_connect(struct mei_cl *cl, struct mei_cl_cb *cb) list_move_tail(&cb->list, &dev->ctrl_rd_list.list); cl->timer_count = MEI_CONNECT_TIMEOUT; + mei_schedule_stall_timer(dev); return 0; } @@ -1042,14 +1054,14 @@ int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb, * * @cl: host client * @me_cl: me client - * @file: pointer to file structure + * @fp: pointer to file structure * * Locking: called under "dev->device_lock" lock * * Return: 0 on success, <0 on failure. */ int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl, - const struct file *file) + const struct file *fp) { struct mei_device *dev; struct mei_cl_cb *cb; @@ -1076,12 +1088,11 @@ int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl, goto nortpm; } - cb = mei_io_cb_init(cl, MEI_FOP_CONNECT, file); - rets = cb ? 0 : -ENOMEM; - if (rets) + cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_CONNECT, fp); + if (!cb) { + rets = -ENOMEM; goto out; - - list_add_tail(&cb->list, &dev->ctrl_wr_list.list); + } /* run hbuf acquire last so we don't have to undo */ if (!mei_cl_is_other_connecting(cl) && mei_hbuf_acquire(dev)) { @@ -1159,50 +1170,42 @@ err: return ERR_PTR(ret); } - - /** - * mei_cl_flow_ctrl_creds - checks flow_control credits for cl. + * mei_cl_tx_flow_ctrl_creds - checks flow_control credits for cl. * * @cl: host client - * @fp: the file pointer associated with the pointer * - * Return: 1 if mei_flow_ctrl_creds >0, 0 - otherwise. + * Return: 1 if tx_flow_ctrl_creds >0, 0 - otherwise. */ -static int mei_cl_flow_ctrl_creds(struct mei_cl *cl, const struct file *fp) +static int mei_cl_tx_flow_ctrl_creds(struct mei_cl *cl) { - int rets; - if (WARN_ON(!cl || !cl->me_cl)) return -EINVAL; - if (cl->mei_flow_ctrl_creds > 0) + if (cl->tx_flow_ctrl_creds > 0) return 1; - if (mei_cl_is_fixed_address(cl)) { - rets = mei_cl_read_start(cl, mei_cl_mtu(cl), fp); - if (rets && rets != -EBUSY) - return rets; + if (mei_cl_is_fixed_address(cl)) return 1; - } if (mei_cl_is_single_recv_buf(cl)) { - if (cl->me_cl->mei_flow_ctrl_creds > 0) + if (cl->me_cl->tx_flow_ctrl_creds > 0) return 1; } return 0; } /** - * mei_cl_flow_ctrl_reduce - reduces flow_control. + * mei_cl_tx_flow_ctrl_creds_reduce - reduces transmit flow control credits + * for a client * - * @cl: private data of the file object + * @cl: host client * * Return: * 0 on success * -EINVAL when ctrl credits are <= 0 */ -static int mei_cl_flow_ctrl_reduce(struct mei_cl *cl) +static int mei_cl_tx_flow_ctrl_creds_reduce(struct mei_cl *cl) { if (WARN_ON(!cl || !cl->me_cl)) return -EINVAL; @@ -1211,13 +1214,13 @@ static int mei_cl_flow_ctrl_reduce(struct mei_cl *cl) return 0; if (mei_cl_is_single_recv_buf(cl)) { - if (WARN_ON(cl->me_cl->mei_flow_ctrl_creds <= 0)) + if (WARN_ON(cl->me_cl->tx_flow_ctrl_creds <= 0)) return -EINVAL; - cl->me_cl->mei_flow_ctrl_creds--; + cl->me_cl->tx_flow_ctrl_creds--; } else { - if (WARN_ON(cl->mei_flow_ctrl_creds <= 0)) + if (WARN_ON(cl->tx_flow_ctrl_creds <= 0)) return -EINVAL; - cl->mei_flow_ctrl_creds--; + cl->tx_flow_ctrl_creds--; } return 0; } @@ -1292,7 +1295,7 @@ int mei_cl_irq_notify(struct mei_cl *cl, struct mei_cl_cb *cb, * mei_cl_notify_request - send notification stop/start request * * @cl: host client - * @file: associate request with file + * @fp: associate request with file * @request: 1 for start or 0 for stop * * Locking: called under "dev->device_lock" lock @@ -1300,7 +1303,7 @@ int mei_cl_irq_notify(struct mei_cl *cl, struct mei_cl_cb *cb, * Return: 0 on such and error otherwise. */ int mei_cl_notify_request(struct mei_cl *cl, - const struct file *file, u8 request) + const struct file *fp, u8 request) { struct mei_device *dev; struct mei_cl_cb *cb; @@ -1325,7 +1328,7 @@ int mei_cl_notify_request(struct mei_cl *cl, } fop_type = mei_cl_notify_req2fop(request); - cb = mei_io_cb_init(cl, fop_type, file); + cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, fop_type, fp); if (!cb) { rets = -ENOMEM; goto out; @@ -1336,9 +1339,7 @@ int mei_cl_notify_request(struct mei_cl *cl, rets = -ENODEV; goto out; } - list_add_tail(&cb->list, &dev->ctrl_rd_list.list); - } else { - list_add_tail(&cb->list, &dev->ctrl_wr_list.list); + list_move_tail(&cb->list, &dev->ctrl_rd_list.list); } mutex_unlock(&dev->device_lock); @@ -1436,25 +1437,6 @@ out: } /** - * mei_cl_is_read_fc_cb - check if read cb is waiting for flow control - * for given host client - * - * @cl: host client - * - * Return: true, if found at least one cb. - */ -static bool mei_cl_is_read_fc_cb(struct mei_cl *cl) -{ - struct mei_device *dev = cl->dev; - struct mei_cl_cb *cb; - - list_for_each_entry(cb, &dev->ctrl_wr_list.list, list) - if (cb->fop_type == MEI_FOP_READ && cb->cl == cl) - return true; - return false; -} - -/** * mei_cl_read_start - the start read client message function. * * @cl: host client @@ -1477,26 +1459,22 @@ int mei_cl_read_start(struct mei_cl *cl, size_t length, const struct file *fp) if (!mei_cl_is_connected(cl)) return -ENODEV; - /* HW currently supports only one pending read */ - if (!list_empty(&cl->rd_pending) || mei_cl_is_read_fc_cb(cl)) - return -EBUSY; - if (!mei_me_cl_is_active(cl->me_cl)) { cl_err(dev, cl, "no such me client\n"); return -ENOTTY; } - /* always allocate at least client max message */ - length = max_t(size_t, length, mei_cl_mtu(cl)); - cb = mei_cl_alloc_cb(cl, length, MEI_FOP_READ, fp); + if (mei_cl_is_fixed_address(cl) || cl == &dev->iamthif_cl) + return 0; + + /* HW currently supports only one pending read */ + if (cl->rx_flow_ctrl_creds) + return -EBUSY; + + cb = mei_cl_enqueue_ctrl_wr_cb(cl, length, MEI_FOP_READ, fp); if (!cb) return -ENOMEM; - if (mei_cl_is_fixed_address(cl)) { - list_add_tail(&cb->list, &cl->rd_pending); - return 0; - } - rets = pm_runtime_get(dev->dev); if (rets < 0 && rets != -EINPROGRESS) { pm_runtime_put_noidle(dev->dev); @@ -1504,16 +1482,15 @@ int mei_cl_read_start(struct mei_cl *cl, size_t length, const struct file *fp) goto nortpm; } + rets = 0; if (mei_hbuf_acquire(dev)) { rets = mei_hbm_cl_flow_control_req(dev, cl); if (rets < 0) goto out; - list_add_tail(&cb->list, &cl->rd_pending); - } else { - rets = 0; - list_add_tail(&cb->list, &dev->ctrl_wr_list.list); + list_move_tail(&cb->list, &cl->rd_pending); } + cl->rx_flow_ctrl_creds++; out: cl_dbg(dev, cl, "rpm: autosuspend\n"); @@ -1557,7 +1534,7 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, first_chunk = cb->buf_idx == 0; - rets = first_chunk ? mei_cl_flow_ctrl_creds(cl, cb->fp) : 1; + rets = first_chunk ? mei_cl_tx_flow_ctrl_creds(cl) : 1; if (rets < 0) return rets; @@ -1605,7 +1582,7 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, cb->completed = mei_hdr.msg_complete == 1; if (first_chunk) { - if (mei_cl_flow_ctrl_reduce(cl)) + if (mei_cl_tx_flow_ctrl_creds_reduce(cl)) return -EIO; } @@ -1663,7 +1640,7 @@ int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking) mei_hdr.msg_complete = 0; mei_hdr.internal = cb->internal; - rets = mei_cl_flow_ctrl_creds(cl, cb->fp); + rets = mei_cl_tx_flow_ctrl_creds(cl); if (rets < 0) goto err; @@ -1691,7 +1668,7 @@ int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking) if (rets) goto err; - rets = mei_cl_flow_ctrl_reduce(cl); + rets = mei_cl_tx_flow_ctrl_creds_reduce(cl); if (rets) goto err; @@ -1761,6 +1738,9 @@ void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb) case MEI_FOP_READ: list_add_tail(&cb->list, &cl->rd_completed); + if (!mei_cl_is_fixed_address(cl) && + !WARN_ON(!cl->rx_flow_ctrl_creds)) + cl->rx_flow_ctrl_creds--; if (!mei_cl_bus_rx_event(cl)) wake_up_interruptible(&cl->rx_wait); break; diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h index 0d7a3a1..d2bfabe 100644 --- a/drivers/misc/mei/client.h +++ b/drivers/misc/mei/client.h @@ -82,11 +82,7 @@ static inline u8 mei_me_cl_ver(const struct mei_me_client *me_cl) /* * MEI IO Functions */ -struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type, - const struct file *fp); void mei_io_cb_free(struct mei_cl_cb *priv_cb); -int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length); - /** * mei_io_list_init - Sets up a queue list. @@ -118,6 +114,9 @@ void mei_cl_read_cb_flush(const struct mei_cl *cl, const struct file *fp); struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length, enum mei_cb_file_ops type, const struct file *fp); +struct mei_cl_cb *mei_cl_enqueue_ctrl_wr_cb(struct mei_cl *cl, size_t length, + enum mei_cb_file_ops type, + const struct file *fp); int mei_cl_flush_queues(struct mei_cl *cl, const struct file *fp); /* diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index 085f3aa..dd7f15a 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -161,6 +161,7 @@ void mei_hbm_cl_hdr(struct mei_cl *cl, u8 hbm_cmd, void *buf, size_t len) * @dev: the device structure * @cl: client * @hbm_cmd: host bus message command + * @buf: message buffer * @len: buffer length * * Return: 0 on success, <0 on failure. @@ -276,6 +277,7 @@ int mei_hbm_start_req(struct mei_device *dev) dev->hbm_state = MEI_HBM_STARTING; dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; + mei_schedule_stall_timer(dev); return 0; } @@ -311,6 +313,7 @@ static int mei_hbm_enum_clients_req(struct mei_device *dev) } dev->hbm_state = MEI_HBM_ENUM_CLIENTS; dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; + mei_schedule_stall_timer(dev); return 0; } @@ -339,7 +342,7 @@ static int mei_hbm_me_cl_add(struct mei_device *dev, me_cl->props = res->client_properties; me_cl->client_id = res->me_addr; - me_cl->mei_flow_ctrl_creds = 0; + me_cl->tx_flow_ctrl_creds = 0; mei_me_cl_add(dev, me_cl); @@ -561,6 +564,7 @@ static int mei_hbm_prop_req(struct mei_device *dev, unsigned long start_idx) } dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; + mei_schedule_stall_timer(dev); return 0; } @@ -636,23 +640,22 @@ int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl) } /** - * mei_hbm_add_single_flow_creds - adds single buffer credentials. + * mei_hbm_add_single_tx_flow_ctrl_creds - adds single buffer credentials. * * @dev: the device structure - * @flow: flow control. + * @fctrl: flow control response bus message * * Return: 0 on success, < 0 otherwise */ -static int mei_hbm_add_single_flow_creds(struct mei_device *dev, - struct hbm_flow_control *flow) +static int mei_hbm_add_single_tx_flow_ctrl_creds(struct mei_device *dev, + struct hbm_flow_control *fctrl) { struct mei_me_client *me_cl; int rets; - me_cl = mei_me_cl_by_id(dev, flow->me_addr); + me_cl = mei_me_cl_by_id(dev, fctrl->me_addr); if (!me_cl) { - dev_err(dev->dev, "no such me client %d\n", - flow->me_addr); + dev_err(dev->dev, "no such me client %d\n", fctrl->me_addr); return -ENOENT; } @@ -661,9 +664,9 @@ static int mei_hbm_add_single_flow_creds(struct mei_device *dev, goto out; } - me_cl->mei_flow_ctrl_creds++; + me_cl->tx_flow_ctrl_creds++; dev_dbg(dev->dev, "recv flow ctrl msg ME %d (single) creds = %d.\n", - flow->me_addr, me_cl->mei_flow_ctrl_creds); + fctrl->me_addr, me_cl->tx_flow_ctrl_creds); rets = 0; out: @@ -675,24 +678,24 @@ out: * mei_hbm_cl_flow_control_res - flow control response from me * * @dev: the device structure - * @flow_control: flow control response bus message + * @fctrl: flow control response bus message */ -static void mei_hbm_cl_flow_control_res(struct mei_device *dev, - struct hbm_flow_control *flow_control) +static void mei_hbm_cl_tx_flow_ctrl_creds_res(struct mei_device *dev, + struct hbm_flow_control *fctrl) { struct mei_cl *cl; - if (!flow_control->host_addr) { + if (!fctrl->host_addr) { /* single receive buffer */ - mei_hbm_add_single_flow_creds(dev, flow_control); + mei_hbm_add_single_tx_flow_ctrl_creds(dev, fctrl); return; } - cl = mei_hbm_cl_find_by_cmd(dev, flow_control); + cl = mei_hbm_cl_find_by_cmd(dev, fctrl); if (cl) { - cl->mei_flow_ctrl_creds++; + cl->tx_flow_ctrl_creds++; cl_dbg(dev, cl, "flow control creds = %d.\n", - cl->mei_flow_ctrl_creds); + cl->tx_flow_ctrl_creds); } } @@ -871,10 +874,10 @@ static int mei_hbm_fw_disconnect_req(struct mei_device *dev, cl->state = MEI_FILE_DISCONNECTING; cl->timer_count = 0; - cb = mei_io_cb_init(cl, MEI_FOP_DISCONNECT_RSP, NULL); + cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_DISCONNECT_RSP, + NULL); if (!cb) return -ENOMEM; - list_add_tail(&cb->list, &dev->ctrl_wr_list.list); } return 0; } @@ -1022,7 +1025,7 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) struct mei_hbm_cl_cmd *cl_cmd; struct hbm_client_connect_request *disconnect_req; - struct hbm_flow_control *flow_control; + struct hbm_flow_control *fctrl; /* read the message to our buffer */ BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf)); @@ -1102,8 +1105,8 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) case MEI_FLOW_CONTROL_CMD: dev_dbg(dev->dev, "hbm: client flow control response: message received.\n"); - flow_control = (struct hbm_flow_control *) mei_msg; - mei_hbm_cl_flow_control_res(dev, flow_control); + fctrl = (struct hbm_flow_control *)mei_msg; + mei_hbm_cl_tx_flow_ctrl_creds_res(dev, fctrl); break; case MEI_PG_ISOLATION_ENTRY_RES_CMD: diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h index 0dcb854..7ad15d6 100644 --- a/drivers/misc/mei/hw-me-regs.h +++ b/drivers/misc/mei/hw-me-regs.h @@ -125,6 +125,9 @@ #define MEI_DEV_ID_BXT_M 0x1A9A /* Broxton M */ #define MEI_DEV_ID_APL_I 0x5A9A /* Apollo Lake I */ +#define MEI_DEV_ID_KBP 0xA2BA /* Kaby Point */ +#define MEI_DEV_ID_KBP_2 0xA2BB /* Kaby Point 2 */ + /* * MEI HW Section */ diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index dc3a854..56c2101 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -18,6 +18,7 @@ #include <linux/kthread.h> #include <linux/interrupt.h> +#include <linux/pm_runtime.h> #include "mei_dev.h" #include "hbm.h" @@ -1063,6 +1064,8 @@ static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable) } } + pm_runtime_set_active(dev->dev); + hcsr = mei_hcsr_read(dev); /* H_RST may be found lit before reset is started, * for example if preceding reset flow hasn't completed. diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c index 4a6c1b8..e6e5e55 100644 --- a/drivers/misc/mei/hw-txe.c +++ b/drivers/misc/mei/hw-txe.c @@ -20,6 +20,7 @@ #include <linux/delay.h> #include <linux/kthread.h> #include <linux/irqreturn.h> +#include <linux/pm_runtime.h> #include <linux/mei.h> @@ -935,6 +936,8 @@ static int mei_txe_hw_start(struct mei_device *dev) return ret; } + pm_runtime_set_active(dev->dev); + /* enable input ready interrupts: * SEC_IPC_HOST_INT_MASK.IPC_INPUT_READY_INT_MASK */ diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index f7c8dfd..9a9c248 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -94,7 +94,7 @@ void mei_cancel_work(struct mei_device *dev) cancel_work_sync(&dev->reset_work); cancel_work_sync(&dev->bus_rescan_work); - cancel_delayed_work(&dev->timer_work); + cancel_delayed_work_sync(&dev->timer_work); } EXPORT_SYMBOL_GPL(mei_cancel_work); diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 3831a7b..5a4893c 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -102,26 +102,25 @@ int mei_cl_irq_read_msg(struct mei_cl *cl, { struct mei_device *dev = cl->dev; struct mei_cl_cb *cb; - unsigned char *buffer = NULL; size_t buf_sz; cb = list_first_entry_or_null(&cl->rd_pending, struct mei_cl_cb, list); if (!cb) { - cl_err(dev, cl, "pending read cb not found\n"); - goto out; + if (!mei_cl_is_fixed_address(cl)) { + cl_err(dev, cl, "pending read cb not found\n"); + goto discard; + } + cb = mei_cl_alloc_cb(cl, mei_cl_mtu(cl), MEI_FOP_READ, cl->fp); + if (!cb) + goto discard; + list_add_tail(&cb->list, &cl->rd_pending); } if (!mei_cl_is_connected(cl)) { cl_dbg(dev, cl, "not connected\n"); - cb->status = -ENODEV; - goto out; - } - - if (cb->buf.size == 0 || cb->buf.data == NULL) { - cl_err(dev, cl, "response buffer is not allocated.\n"); list_move_tail(&cb->list, &complete_list->list); - cb->status = -ENOMEM; - goto out; + cb->status = -ENODEV; + goto discard; } buf_sz = mei_hdr->length + cb->buf_idx; @@ -132,25 +131,19 @@ int mei_cl_irq_read_msg(struct mei_cl *cl, list_move_tail(&cb->list, &complete_list->list); cb->status = -EMSGSIZE; - goto out; + goto discard; } if (cb->buf.size < buf_sz) { cl_dbg(dev, cl, "message overflow. size %zu len %d idx %zu\n", cb->buf.size, mei_hdr->length, cb->buf_idx); - buffer = krealloc(cb->buf.data, buf_sz, GFP_KERNEL); - if (!buffer) { - cb->status = -ENOMEM; - list_move_tail(&cb->list, &complete_list->list); - goto out; - } - cb->buf.data = buffer; - cb->buf.size = buf_sz; + list_move_tail(&cb->list, &complete_list->list); + cb->status = -EMSGSIZE; + goto discard; } - buffer = cb->buf.data + cb->buf_idx; - mei_read_slots(dev, buffer, mei_hdr->length); + mei_read_slots(dev, cb->buf.data + cb->buf_idx, mei_hdr->length); cb->buf_idx += mei_hdr->length; @@ -162,10 +155,10 @@ int mei_cl_irq_read_msg(struct mei_cl *cl, pm_request_autosuspend(dev->dev); } -out: - if (!buffer) - mei_irq_discard_msg(dev, mei_hdr); + return 0; +discard: + mei_irq_discard_msg(dev, mei_hdr); return 0; } @@ -216,6 +209,9 @@ static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb, int slots; int ret; + if (!list_empty(&cl->rd_pending)) + return 0; + msg_slots = mei_data2slots(sizeof(struct hbm_flow_control)); slots = mei_hbuf_empty_slots(dev); @@ -463,6 +459,19 @@ static void mei_connect_timeout(struct mei_cl *cl) mei_reset(dev); } +#define MEI_STALL_TIMER_FREQ (2 * HZ) +/** + * mei_schedule_stall_timer - re-arm stall_timer work + * + * Schedule stall timer + * + * @dev: the device structure + */ +void mei_schedule_stall_timer(struct mei_device *dev) +{ + schedule_delayed_work(&dev->timer_work, MEI_STALL_TIMER_FREQ); +} + /** * mei_timer - timer function. * @@ -472,10 +481,9 @@ static void mei_connect_timeout(struct mei_cl *cl) void mei_timer(struct work_struct *work) { struct mei_cl *cl; - struct mei_device *dev = container_of(work, struct mei_device, timer_work.work); - + bool reschedule_timer = false; mutex_lock(&dev->device_lock); @@ -490,6 +498,7 @@ void mei_timer(struct work_struct *work) mei_reset(dev); goto out; } + reschedule_timer = true; } } @@ -504,6 +513,7 @@ void mei_timer(struct work_struct *work) mei_connect_timeout(cl); goto out; } + reschedule_timer = true; } } @@ -514,19 +524,16 @@ void mei_timer(struct work_struct *work) if (--dev->iamthif_stall_timer == 0) { dev_err(dev->dev, "timer: amthif hanged.\n"); mei_reset(dev); - dev->iamthif_canceled = false; - dev->iamthif_state = MEI_IAMTHIF_IDLE; - mei_io_cb_free(dev->iamthif_current_cb); - dev->iamthif_current_cb = NULL; - - dev->iamthif_fp = NULL; mei_amthif_run_next_cmd(dev); + goto out; } + reschedule_timer = true; } out: - if (dev->dev_state != MEI_DEV_DISABLED) - schedule_delayed_work(&dev->timer_work, 2 * HZ); + if (dev->dev_state != MEI_DEV_DISABLED && reschedule_timer) + mei_schedule_stall_timer(dev); + mutex_unlock(&dev->device_lock); } diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 52635b0..fa50635 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -71,6 +71,7 @@ static int mei_open(struct inode *inode, struct file *file) goto err_unlock; } + cl->fp = file; file->private_data = cl; mutex_unlock(&dev->device_lock); @@ -138,9 +139,8 @@ static ssize_t mei_read(struct file *file, char __user *ubuf, struct mei_cl *cl = file->private_data; struct mei_device *dev; struct mei_cl_cb *cb = NULL; + bool nonblock = !!(file->f_flags & O_NONBLOCK); int rets; - int err; - if (WARN_ON(!cl || !cl->dev)) return -ENODEV; @@ -164,11 +164,6 @@ static ssize_t mei_read(struct file *file, char __user *ubuf, goto out; } - if (cl == &dev->iamthif_cl) { - rets = mei_amthif_read(dev, file, ubuf, length, offset); - goto out; - } - cb = mei_cl_read_cb(cl, file); if (cb) goto copy_buffer; @@ -176,24 +171,29 @@ static ssize_t mei_read(struct file *file, char __user *ubuf, if (*offset > 0) *offset = 0; - err = mei_cl_read_start(cl, length, file); - if (err && err != -EBUSY) { - cl_dbg(dev, cl, "mei start read failure status = %d\n", err); - rets = err; + rets = mei_cl_read_start(cl, length, file); + if (rets && rets != -EBUSY) { + cl_dbg(dev, cl, "mei start read failure status = %d\n", rets); goto out; } - if (list_empty(&cl->rd_completed) && !waitqueue_active(&cl->rx_wait)) { - if (file->f_flags & O_NONBLOCK) { - rets = -EAGAIN; - goto out; - } + if (nonblock) { + rets = -EAGAIN; + goto out; + } + if (rets == -EBUSY && + !mei_cl_enqueue_ctrl_wr_cb(cl, length, MEI_FOP_READ, file)) { + rets = -ENOMEM; + goto out; + } + + do { mutex_unlock(&dev->device_lock); if (wait_event_interruptible(cl->rx_wait, - (!list_empty(&cl->rd_completed)) || - (!mei_cl_is_connected(cl)))) { + (!list_empty(&cl->rd_completed)) || + (!mei_cl_is_connected(cl)))) { if (signal_pending(current)) return -EINTR; @@ -202,16 +202,12 @@ static ssize_t mei_read(struct file *file, char __user *ubuf, mutex_lock(&dev->device_lock); if (!mei_cl_is_connected(cl)) { - rets = -EBUSY; + rets = -ENODEV; goto out; } - } - cb = mei_cl_read_cb(cl, file); - if (!cb) { - rets = 0; - goto out; - } + cb = mei_cl_read_cb(cl, file); + } while (!cb); copy_buffer: /* now copy the data to user space */ @@ -609,24 +605,24 @@ static unsigned int mei_poll(struct file *file, poll_table *wait) goto out; } - if (cl == &dev->iamthif_cl) { - mask = mei_amthif_poll(dev, file, wait); - goto out; - } - if (notify_en) { poll_wait(file, &cl->ev_wait, wait); if (cl->notify_ev) mask |= POLLPRI; } + if (cl == &dev->iamthif_cl) { + mask |= mei_amthif_poll(file, wait); + goto out; + } + if (req_events & (POLLIN | POLLRDNORM)) { poll_wait(file, &cl->rx_wait, wait); if (!list_empty(&cl->rd_completed)) mask |= POLLIN | POLLRDNORM; else - mei_cl_read_start(cl, 0, file); + mei_cl_read_start(cl, mei_cl_mtu(cl), file); } out: diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index e5e3250..1169fd9 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -80,18 +80,13 @@ const char *mei_dev_state_str(int state); enum iamthif_states { MEI_IAMTHIF_IDLE, MEI_IAMTHIF_WRITING, - MEI_IAMTHIF_FLOW_CONTROL, MEI_IAMTHIF_READING, - MEI_IAMTHIF_READ_COMPLETE }; enum mei_file_transaction_states { MEI_IDLE, MEI_WRITING, MEI_WRITE_COMPLETE, - MEI_FLOW_CONTROL, - MEI_READING, - MEI_READ_COMPLETE }; /** @@ -146,7 +141,7 @@ struct mei_fw_status { * @refcnt: struct reference count * @props: client properties * @client_id: me client id - * @mei_flow_ctrl_creds: flow control credits + * @tx_flow_ctrl_creds: flow control credits * @connect_count: number connections to this client * @bus_added: added to bus */ @@ -155,7 +150,7 @@ struct mei_me_client { struct kref refcnt; struct mei_client_properties props; u8 client_id; - u8 mei_flow_ctrl_creds; + u8 tx_flow_ctrl_creds; u8 connect_count; u8 bus_added; }; @@ -202,10 +197,11 @@ struct mei_cl_cb { * @ev_async: event async notification * @status: connection status * @me_cl: fw client connected + * @fp: file associated with client * @host_client_id: host id - * @mei_flow_ctrl_creds: transmit flow credentials + * @tx_flow_ctrl_creds: transmit flow credentials + * @rx_flow_ctrl_creds: receive flow credentials * @timer_count: watchdog timer for operation completion - * @reserved: reserved for alignment * @notify_en: notification - enabled/disabled * @notify_ev: pending notification event * @writing_state: state of the tx @@ -225,10 +221,11 @@ struct mei_cl { struct fasync_struct *ev_async; int status; struct mei_me_client *me_cl; + const struct file *fp; u8 host_client_id; - u8 mei_flow_ctrl_creds; + u8 tx_flow_ctrl_creds; + u8 rx_flow_ctrl_creds; u8 timer_count; - u8 reserved; u8 notify_en; u8 notify_ev; enum mei_file_transaction_states writing_state; @@ -400,9 +397,7 @@ const char *mei_pg_state_str(enum mei_pg_state state); * @override_fixed_address: force allow fixed address behavior * * @amthif_cmd_list : amthif list for cmd waiting - * @iamthif_fp : file for current amthif operation * @iamthif_cl : amthif host client - * @iamthif_current_cb : amthif current operation callback * @iamthif_open_count : number of opened amthif connections * @iamthif_stall_timer : timer to detect amthif hang * @iamthif_state : amthif processor state @@ -484,10 +479,7 @@ struct mei_device { /* amthif list for cmd waiting */ struct mei_cl_cb amthif_cmd_list; - /* driver managed amthif list for reading completed amthif cmd data */ - const struct file *iamthif_fp; struct mei_cl iamthif_cl; - struct mei_cl_cb *iamthif_current_cb; long iamthif_open_count; u32 iamthif_stall_timer; enum iamthif_states iamthif_state; @@ -556,6 +548,7 @@ void mei_cancel_work(struct mei_device *dev); */ void mei_timer(struct work_struct *work); +void mei_schedule_stall_timer(struct mei_device *dev); int mei_irq_read_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list, s32 *slots); @@ -569,11 +562,7 @@ void mei_amthif_reset_params(struct mei_device *dev); int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl); -int mei_amthif_read(struct mei_device *dev, struct file *file, - char __user *ubuf, size_t length, loff_t *offset); - -unsigned int mei_amthif_poll(struct mei_device *dev, - struct file *file, poll_table *wait); +unsigned int mei_amthif_poll(struct file *file, poll_table *wait); int mei_amthif_release(struct mei_device *dev, struct file *file); diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 71cea9b..f3ffd88 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -91,6 +91,9 @@ static const struct pci_device_id mei_me_pci_tbl[] = { {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, mei_me_pch8_cfg)}, {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, mei_me_pch8_cfg)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_KBP, mei_me_pch8_cfg)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_2, mei_me_pch8_cfg)}, + /* required last entry */ {0, } }; @@ -217,8 +220,6 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) pci_set_drvdata(pdev, dev); - schedule_delayed_work(&dev->timer_work, HZ); - /* * For not wake-able HW runtime pm framework * can't be used on pci device level. @@ -400,6 +401,9 @@ static int mei_me_pm_runtime_suspend(struct device *device) dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); + if (ret && ret != -EAGAIN) + schedule_work(&dev->reset_work); + return ret; } @@ -423,6 +427,9 @@ static int mei_me_pm_runtime_resume(struct device *device) dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); + if (ret) + schedule_work(&dev->reset_work); + return ret; } diff --git a/drivers/misc/mei/pci-txe.c b/drivers/misc/mei/pci-txe.c index 30cc306..58ffd30 100644 --- a/drivers/misc/mei/pci-txe.c +++ b/drivers/misc/mei/pci-txe.c @@ -347,6 +347,10 @@ static int mei_txe_pm_runtime_suspend(struct device *device) dev_dbg(&pdev->dev, "rpm: txe: runtime suspend ret=%d\n", ret); mutex_unlock(&dev->device_lock); + + if (ret && ret != -EAGAIN) + schedule_work(&dev->reset_work); + return ret; } @@ -372,6 +376,9 @@ static int mei_txe_pm_runtime_resume(struct device *device) dev_dbg(&pdev->dev, "rpm: txe: runtime resume ret = %d\n", ret); + if (ret) + schedule_work(&dev->reset_work); + return ret; } diff --git a/drivers/misc/mic/scif/scif_dma.c b/drivers/misc/mic/scif/scif_dma.c index cd01a0e..64d5760 100644 --- a/drivers/misc/mic/scif/scif_dma.c +++ b/drivers/misc/mic/scif/scif_dma.c @@ -115,7 +115,6 @@ int scif_reserve_dma_chan(struct scif_endpt *ep) */ static void __scif_rma_destroy_tcw(struct scif_mmu_notif *mmn, - struct scif_endpt *ep, u64 start, u64 len) { struct list_head *item, *tmp; @@ -128,7 +127,6 @@ void __scif_rma_destroy_tcw(struct scif_mmu_notif *mmn, list_for_each_safe(item, tmp, &mmn->tc_reg_list) { window = list_entry(item, struct scif_window, list); - ep = (struct scif_endpt *)window->ep; if (!len) break; start_va = window->va_for_temp; @@ -146,7 +144,7 @@ static void scif_rma_destroy_tcw(struct scif_mmu_notif *mmn, u64 start, u64 len) struct scif_endpt *ep = mmn->ep; spin_lock(&ep->rma_info.tc_lock); - __scif_rma_destroy_tcw(mmn, ep, start, len); + __scif_rma_destroy_tcw(mmn, start, len); spin_unlock(&ep->rma_info.tc_lock); } @@ -169,7 +167,7 @@ static void __scif_rma_destroy_tcw_ep(struct scif_endpt *ep) spin_lock(&ep->rma_info.tc_lock); list_for_each_safe(item, tmp, &ep->rma_info.mmn_list) { mmn = list_entry(item, struct scif_mmu_notif, list); - __scif_rma_destroy_tcw(mmn, ep, 0, ULONG_MAX); + __scif_rma_destroy_tcw(mmn, 0, ULONG_MAX); } spin_unlock(&ep->rma_info.tc_lock); } diff --git a/drivers/misc/mic/scif/scif_mmap.c b/drivers/misc/mic/scif/scif_mmap.c index 49cb8f7..9282116 100644 --- a/drivers/misc/mic/scif/scif_mmap.c +++ b/drivers/misc/mic/scif/scif_mmap.c @@ -552,7 +552,7 @@ static void scif_munmap(struct vm_area_struct *vma) { struct scif_endpt *ep; struct vma_pvt *vmapvt = vma->vm_private_data; - int nr_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; + int nr_pages = vma_pages(vma); s64 offset; struct scif_rma_req req; struct scif_window *window = NULL; @@ -614,7 +614,7 @@ int scif_mmap(struct vm_area_struct *vma, scif_epd_t epd) struct scif_window *window = NULL; struct scif_endpt *ep = (struct scif_endpt *)epd; s64 start_offset = vma->vm_pgoff << PAGE_SHIFT; - int nr_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; + int nr_pages = vma_pages(vma); int err; struct vma_pvt *vmapvt; diff --git a/drivers/misc/pch_phub.c b/drivers/misc/pch_phub.c index 4810e03..e42bdc9 100644 --- a/drivers/misc/pch_phub.c +++ b/drivers/misc/pch_phub.c @@ -28,6 +28,7 @@ #include <linux/if_ether.h> #include <linux/ctype.h> #include <linux/dmi.h> +#include <linux/of.h> #define PHUB_STATUS 0x00 /* Status Register offset */ #define PHUB_CONTROL 0x04 /* Control Register offset */ @@ -57,6 +58,7 @@ /* CM-iTC */ #define CLKCFG_UART_48MHZ (1 << 16) +#define CLKCFG_UART_25MHZ (2 << 16) #define CLKCFG_BAUDDIV (2 << 20) #define CLKCFG_PLL2VCO (8 << 9) #define CLKCFG_UARTCLKSEL (1 << 18) @@ -711,6 +713,12 @@ static int pch_phub_probe(struct pci_dev *pdev, if (id->driver_data == 1) { /* EG20T PCH */ const char *board_name; + unsigned int prefetch = 0x000affaa; + + if (pdev->dev.of_node) + of_property_read_u32(pdev->dev.of_node, + "intel,eg20t-prefetch", + &prefetch); ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr); @@ -736,11 +744,21 @@ static int pch_phub_probe(struct pci_dev *pdev, CLKCFG_UART_MASK); /* set the prefech value */ - iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14); + iowrite32(prefetch, chip->pch_phub_base_address + 0x14); /* set the interrupt delay value */ iowrite32(0x25, chip->pch_phub_base_address + 0x44); chip->pch_opt_rom_start_address = PCH_PHUB_ROM_START_ADDR_EG20T; chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_EG20T; + + /* quirk for MIPS Boston platform */ + if (pdev->dev.of_node) { + if (of_machine_is_compatible("img,boston")) { + pch_phub_read_modify_write_reg(chip, + (unsigned int)CLKCFG_REG_OFFSET, + CLKCFG_UART_25MHZ, + CLKCFG_UART_MASK); + } + } } else if (id->driver_data == 2) { /* ML7213 IOH */ ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr); if (ret) diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c index 9ec262a..ec09010 100644 --- a/drivers/misc/vmw_vmci/vmci_host.c +++ b/drivers/misc/vmw_vmci/vmci_host.c @@ -381,18 +381,12 @@ static int vmci_host_do_send_datagram(struct vmci_host_dev *vmci_host_dev, return -EINVAL; } - dg = kmalloc(send_info.len, GFP_KERNEL); - if (!dg) { + dg = memdup_user((void __user *)(uintptr_t)send_info.addr, + send_info.len); + if (IS_ERR(dg)) { vmci_ioctl_err( "cannot allocate memory to dispatch datagram\n"); - return -ENOMEM; - } - - if (copy_from_user(dg, (void __user *)(uintptr_t)send_info.addr, - send_info.len)) { - vmci_ioctl_err("error getting datagram\n"); - kfree(dg); - return -EFAULT; + return PTR_ERR(dg); } if (VMCI_DG_SIZE(dg) != send_info.len) { diff --git a/drivers/nvmem/rockchip-efuse.c b/drivers/nvmem/rockchip-efuse.c index 4d3f391..423907b 100644 --- a/drivers/nvmem/rockchip-efuse.c +++ b/drivers/nvmem/rockchip-efuse.c @@ -22,17 +22,29 @@ #include <linux/nvmem-provider.h> #include <linux/slab.h> #include <linux/of.h> +#include <linux/of_platform.h> #include <linux/platform_device.h> -#define EFUSE_A_SHIFT 6 -#define EFUSE_A_MASK 0x3ff -#define EFUSE_PGENB BIT(3) -#define EFUSE_LOAD BIT(2) -#define EFUSE_STROBE BIT(1) -#define EFUSE_CSB BIT(0) - -#define REG_EFUSE_CTRL 0x0000 -#define REG_EFUSE_DOUT 0x0004 +#define RK3288_A_SHIFT 6 +#define RK3288_A_MASK 0x3ff +#define RK3288_PGENB BIT(3) +#define RK3288_LOAD BIT(2) +#define RK3288_STROBE BIT(1) +#define RK3288_CSB BIT(0) + +#define RK3399_A_SHIFT 16 +#define RK3399_A_MASK 0x3ff +#define RK3399_NBYTES 4 +#define RK3399_STROBSFTSEL BIT(9) +#define RK3399_RSB BIT(7) +#define RK3399_PD BIT(5) +#define RK3399_PGENB BIT(3) +#define RK3399_LOAD BIT(2) +#define RK3399_STROBE BIT(1) +#define RK3399_CSB BIT(0) + +#define REG_EFUSE_CTRL 0x0000 +#define REG_EFUSE_DOUT 0x0004 struct rockchip_efuse_chip { struct device *dev; @@ -40,8 +52,8 @@ struct rockchip_efuse_chip { struct clk *clk; }; -static int rockchip_efuse_read(void *context, unsigned int offset, - void *val, size_t bytes) +static int rockchip_rk3288_efuse_read(void *context, unsigned int offset, + void *val, size_t bytes) { struct rockchip_efuse_chip *efuse = context; u8 *buf = val; @@ -53,27 +65,82 @@ static int rockchip_efuse_read(void *context, unsigned int offset, return ret; } - writel(EFUSE_LOAD | EFUSE_PGENB, efuse->base + REG_EFUSE_CTRL); + writel(RK3288_LOAD | RK3288_PGENB, efuse->base + REG_EFUSE_CTRL); udelay(1); while (bytes--) { writel(readl(efuse->base + REG_EFUSE_CTRL) & - (~(EFUSE_A_MASK << EFUSE_A_SHIFT)), + (~(RK3288_A_MASK << RK3288_A_SHIFT)), efuse->base + REG_EFUSE_CTRL); writel(readl(efuse->base + REG_EFUSE_CTRL) | - ((offset++ & EFUSE_A_MASK) << EFUSE_A_SHIFT), + ((offset++ & RK3288_A_MASK) << RK3288_A_SHIFT), efuse->base + REG_EFUSE_CTRL); udelay(1); writel(readl(efuse->base + REG_EFUSE_CTRL) | - EFUSE_STROBE, efuse->base + REG_EFUSE_CTRL); + RK3288_STROBE, efuse->base + REG_EFUSE_CTRL); udelay(1); *buf++ = readb(efuse->base + REG_EFUSE_DOUT); writel(readl(efuse->base + REG_EFUSE_CTRL) & - (~EFUSE_STROBE), efuse->base + REG_EFUSE_CTRL); + (~RK3288_STROBE), efuse->base + REG_EFUSE_CTRL); + udelay(1); + } + + /* Switch to standby mode */ + writel(RK3288_PGENB | RK3288_CSB, efuse->base + REG_EFUSE_CTRL); + + clk_disable_unprepare(efuse->clk); + + return 0; +} + +static int rockchip_rk3399_efuse_read(void *context, unsigned int offset, + void *val, size_t bytes) +{ + struct rockchip_efuse_chip *efuse = context; + unsigned int addr_start, addr_end, addr_offset, addr_len; + u32 out_value; + u8 *buf; + int ret, i = 0; + + ret = clk_prepare_enable(efuse->clk); + if (ret < 0) { + dev_err(efuse->dev, "failed to prepare/enable efuse clk\n"); + return ret; + } + + addr_start = rounddown(offset, RK3399_NBYTES) / RK3399_NBYTES; + addr_end = roundup(offset + bytes, RK3399_NBYTES) / RK3399_NBYTES; + addr_offset = offset % RK3399_NBYTES; + addr_len = addr_end - addr_start; + + buf = kzalloc(sizeof(*buf) * addr_len * RK3399_NBYTES, GFP_KERNEL); + if (!buf) { + clk_disable_unprepare(efuse->clk); + return -ENOMEM; + } + + writel(RK3399_LOAD | RK3399_PGENB | RK3399_STROBSFTSEL | RK3399_RSB, + efuse->base + REG_EFUSE_CTRL); + udelay(1); + while (addr_len--) { + writel(readl(efuse->base + REG_EFUSE_CTRL) | RK3399_STROBE | + ((addr_start++ & RK3399_A_MASK) << RK3399_A_SHIFT), + efuse->base + REG_EFUSE_CTRL); udelay(1); + out_value = readl(efuse->base + REG_EFUSE_DOUT); + writel(readl(efuse->base + REG_EFUSE_CTRL) & (~RK3399_STROBE), + efuse->base + REG_EFUSE_CTRL); + udelay(1); + + memcpy(&buf[i], &out_value, RK3399_NBYTES); + i += RK3399_NBYTES; } /* Switch to standby mode */ - writel(EFUSE_PGENB | EFUSE_CSB, efuse->base + REG_EFUSE_CTRL); + writel(RK3399_PD | RK3399_CSB, efuse->base + REG_EFUSE_CTRL); + + memcpy(val, buf + addr_offset, bytes); + + kfree(buf); clk_disable_unprepare(efuse->clk); @@ -89,7 +156,27 @@ static struct nvmem_config econfig = { }; static const struct of_device_id rockchip_efuse_match[] = { - { .compatible = "rockchip,rockchip-efuse", }, + /* deprecated but kept around for dts binding compatibility */ + { + .compatible = "rockchip,rockchip-efuse", + .data = (void *)&rockchip_rk3288_efuse_read, + }, + { + .compatible = "rockchip,rk3066a-efuse", + .data = (void *)&rockchip_rk3288_efuse_read, + }, + { + .compatible = "rockchip,rk3188-efuse", + .data = (void *)&rockchip_rk3288_efuse_read, + }, + { + .compatible = "rockchip,rk3288-efuse", + .data = (void *)&rockchip_rk3288_efuse_read, + }, + { + .compatible = "rockchip,rk3399-efuse", + .data = (void *)&rockchip_rk3399_efuse_read, + }, { /* sentinel */}, }; MODULE_DEVICE_TABLE(of, rockchip_efuse_match); @@ -99,6 +186,14 @@ static int rockchip_efuse_probe(struct platform_device *pdev) struct resource *res; struct nvmem_device *nvmem; struct rockchip_efuse_chip *efuse; + const struct of_device_id *match; + struct device *dev = &pdev->dev; + + match = of_match_device(dev->driver->of_match_table, dev); + if (!match || !match->data) { + dev_err(dev, "failed to get match data\n"); + return -EINVAL; + } efuse = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_efuse_chip), GFP_KERNEL); @@ -116,7 +211,7 @@ static int rockchip_efuse_probe(struct platform_device *pdev) efuse->dev = &pdev->dev; econfig.size = resource_size(res); - econfig.reg_read = rockchip_efuse_read; + econfig.reg_read = match->data; econfig.priv = efuse; econfig.dev = efuse->dev; nvmem = nvmem_register(&econfig); diff --git a/drivers/s390/char/sclp_ctl.c b/drivers/s390/char/sclp_ctl.c index ea607a4..554eaa1 100644 --- a/drivers/s390/char/sclp_ctl.c +++ b/drivers/s390/char/sclp_ctl.c @@ -126,21 +126,4 @@ static struct miscdevice sclp_ctl_device = { .name = "sclp", .fops = &sclp_ctl_fops, }; - -/* - * Register sclp_ctl misc device - */ -static int __init sclp_ctl_init(void) -{ - return misc_register(&sclp_ctl_device); -} -module_init(sclp_ctl_init); - -/* - * Deregister sclp_ctl misc device - */ -static void __exit sclp_ctl_exit(void) -{ - misc_deregister(&sclp_ctl_device); -} -module_exit(sclp_ctl_exit); +module_misc_device(sclp_ctl_device); diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index aca282d..5ec3a59 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -954,6 +954,7 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev) if (channel > 5) { dev_err(&pdev->dev, "invalid channel (%u) specified.\n", channel); + err = -EINVAL; goto err_put_ctrl; } diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 518db24a..c783140 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1380,7 +1380,7 @@ config SERIAL_IFX6X60 config SERIAL_PCH_UART tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART" - depends on PCI && (X86_32 || COMPILE_TEST) + depends on PCI && (X86_32 || MIPS || COMPILE_TEST) select SERIAL_CORE help This driver is for PCH(Platform controller Hub) UART of Intel EG20T diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index ea4ffc2..23672f8 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -31,6 +31,7 @@ #include <linux/dmi.h> #include <linux/nmi.h> #include <linux/delay.h> +#include <linux/of.h> #include <linux/debugfs.h> #include <linux/dmaengine.h> @@ -1826,6 +1827,10 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, priv->trigger_level = 1; priv->fcr = 0; + if (pdev->dev.of_node) + of_property_read_u32(pdev->dev.of_node, "clock-frequency" + , &user_uartclk); + #ifdef CONFIG_SERIAL_PCH_UART_CONSOLE pch_uart_ports[board->line_no] = priv; #endif diff --git a/drivers/uio/uio_dmem_genirq.c b/drivers/uio/uio_dmem_genirq.c index 915facb..e1134a4 100644 --- a/drivers/uio/uio_dmem_genirq.c +++ b/drivers/uio/uio_dmem_genirq.c @@ -229,7 +229,7 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev) ++uiomem; } - priv->dmem_region_start = i; + priv->dmem_region_start = uiomem - &uioinfo->mem[0]; priv->num_dmem_regions = pdata->num_dynamic_regions; for (i = 0; i < pdata->num_dynamic_regions; ++i) { diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c index 97fb2f8..3cc98c0 100644 --- a/drivers/vhost/test.c +++ b/drivers/vhost/test.c @@ -322,18 +322,7 @@ static struct miscdevice vhost_test_misc = { "vhost-test", &vhost_test_fops, }; - -static int vhost_test_init(void) -{ - return misc_register(&vhost_test_misc); -} -module_init(vhost_test_init); - -static void vhost_test_exit(void) -{ - misc_deregister(&vhost_test_misc); -} -module_exit(vhost_test_exit); +module_misc_device(vhost_test_misc); MODULE_VERSION("0.0.1"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/vme/bridges/Kconfig b/drivers/vme/bridges/Kconfig index f6d8545..f6ddc37 100644 --- a/drivers/vme/bridges/Kconfig +++ b/drivers/vme/bridges/Kconfig @@ -13,3 +13,11 @@ config VME_TSI148 help If you say Y here you get support for the Tundra TSI148 VME bridge chip. + +config VME_FAKE + tristate "Fake" + help + If you say Y here you get support for the fake VME bridge. This + provides a virtualised VME Bus for devices with no VME bridge. This + is mainly useful for VME development (in the absence of VME + hardware). diff --git a/drivers/vme/bridges/Makefile b/drivers/vme/bridges/Makefile index 59638af..b074542 100644 --- a/drivers/vme/bridges/Makefile +++ b/drivers/vme/bridges/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_VME_CA91CX42) += vme_ca91cx42.o obj-$(CONFIG_VME_TSI148) += vme_tsi148.o +obj-$(CONFIG_VME_FAKE) += vme_fake.o diff --git a/drivers/vme/bridges/vme_ca91cx42.c b/drivers/vme/bridges/vme_ca91cx42.c index 9f2c834..6b5ee89 100644 --- a/drivers/vme/bridges/vme_ca91cx42.c +++ b/drivers/vme/bridges/vme_ca91cx42.c @@ -47,6 +47,8 @@ static const struct pci_device_id ca91cx42_ids[] = { { }, }; +MODULE_DEVICE_TABLE(pci, ca91cx42_ids); + static struct pci_driver ca91cx42_driver = { .name = driver_name, .id_table = ca91cx42_ids, @@ -69,7 +71,7 @@ static u32 ca91cx42_LM_irqhandler(struct ca91cx42_driver *bridge, u32 stat) for (i = 0; i < 4; i++) { if (stat & CA91CX42_LINT_LM[i]) { /* We only enable interrupts if the callback is set */ - bridge->lm_callback[i](i); + bridge->lm_callback[i](bridge->lm_data[i]); serviced |= CA91CX42_LINT_LM[i]; } } @@ -1410,7 +1412,7 @@ static int ca91cx42_lm_get(struct vme_lm_resource *lm, * Callback will be passed the monitor triggered. */ static int ca91cx42_lm_attach(struct vme_lm_resource *lm, int monitor, - void (*callback)(int)) + void (*callback)(void *), void *data) { u32 lm_ctl, tmp; struct ca91cx42_driver *bridge; @@ -1438,6 +1440,7 @@ static int ca91cx42_lm_attach(struct vme_lm_resource *lm, int monitor, /* Attach callback */ bridge->lm_callback[monitor] = callback; + bridge->lm_data[monitor] = data; /* Enable Location Monitor interrupt */ tmp = ioread32(bridge->base + LINT_EN); @@ -1477,6 +1480,7 @@ static int ca91cx42_lm_detach(struct vme_lm_resource *lm, int monitor) /* Detach callback */ bridge->lm_callback[monitor] = NULL; + bridge->lm_data[monitor] = NULL; /* If all location monitors disabled, disable global Location Monitor */ if ((tmp & (CA91CX42_LINT_LM0 | CA91CX42_LINT_LM1 | CA91CX42_LINT_LM2 | diff --git a/drivers/vme/bridges/vme_ca91cx42.h b/drivers/vme/bridges/vme_ca91cx42.h index d54119e..f35c9f5 100644 --- a/drivers/vme/bridges/vme_ca91cx42.h +++ b/drivers/vme/bridges/vme_ca91cx42.h @@ -43,7 +43,8 @@ struct ca91cx42_driver { wait_queue_head_t dma_queue; wait_queue_head_t iack_queue; wait_queue_head_t mbox_queue; - void (*lm_callback[4])(int); /* Called in interrupt handler */ + void (*lm_callback[4])(void *); /* Called in interrupt handler */ + void *lm_data[4]; void *crcsr_kernel; dma_addr_t crcsr_bus; struct mutex vme_rmw; /* Only one RMW cycle at a time */ diff --git a/drivers/vme/bridges/vme_fake.c b/drivers/vme/bridges/vme_fake.c new file mode 100644 index 0000000..30b3acc --- /dev/null +++ b/drivers/vme/bridges/vme_fake.c @@ -0,0 +1,1306 @@ +/* + * Fake VME bridge support. + * + * This drive provides a fake VME bridge chip, this enables debugging of the + * VME framework in the absence of a VME system. + * + * This driver has to do a number of things in software that would be driven + * by hardware if it was available, it will also result in extra overhead at + * times when compared with driving actual hardware. + * + * Author: Martyn Welch <martyn@welches.me.uk> + * Copyright (c) 2014 Martyn Welch + * + * Based on vme_tsi148.c: + * + * Author: Martyn Welch <martyn.welch@ge.com> + * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc. + * + * Based on work by Tom Armistead and Ajit Prem + * Copyright 2004 Motorola Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/types.h> +#include <linux/vme.h> + +#include "../vme_bridge.h" + +/* + * Define the number of each that the fake driver supports. + */ +#define FAKE_MAX_MASTER 8 /* Max Master Windows */ +#define FAKE_MAX_SLAVE 8 /* Max Slave Windows */ + +/* Structures to hold information normally held in device registers */ +struct fake_slave_window { + int enabled; + unsigned long long vme_base; + unsigned long long size; + void *buf_base; + u32 aspace; + u32 cycle; +}; + +struct fake_master_window { + int enabled; + unsigned long long vme_base; + unsigned long long size; + u32 aspace; + u32 cycle; + u32 dwidth; +}; + +/* Structure used to hold driver specific information */ +struct fake_driver { + struct vme_bridge *parent; + struct fake_slave_window slaves[FAKE_MAX_SLAVE]; + struct fake_master_window masters[FAKE_MAX_MASTER]; + u32 lm_enabled; + unsigned long long lm_base; + u32 lm_aspace; + u32 lm_cycle; + void (*lm_callback[4])(void *); + void *lm_data[4]; + struct tasklet_struct int_tasklet; + int int_level; + int int_statid; + void *crcsr_kernel; + dma_addr_t crcsr_bus; + /* Only one VME interrupt can be generated at a time, provide locking */ + struct mutex vme_int; +}; + +/* Module parameter */ +static int geoid; + +static const char driver_name[] = "vme_fake"; + +static struct vme_bridge *exit_pointer; + +static struct device *vme_root; + +/* + * Calling VME bus interrupt callback if provided. + */ +static void fake_VIRQ_tasklet(unsigned long data) +{ + struct vme_bridge *fake_bridge; + struct fake_driver *bridge; + + fake_bridge = (struct vme_bridge *) data; + bridge = fake_bridge->driver_priv; + + vme_irq_handler(fake_bridge, bridge->int_level, bridge->int_statid); +} + +/* + * Configure VME interrupt + */ +static void fake_irq_set(struct vme_bridge *fake_bridge, int level, + int state, int sync) +{ + /* Nothing to do */ +} + +static void *fake_pci_to_ptr(dma_addr_t addr) +{ + return (void *)(uintptr_t)addr; +} + +static dma_addr_t fake_ptr_to_pci(void *addr) +{ + return (dma_addr_t)(uintptr_t)addr; +} + +/* + * Generate a VME bus interrupt at the requested level & vector. Wait for + * interrupt to be acked. + */ +static int fake_irq_generate(struct vme_bridge *fake_bridge, int level, + int statid) +{ + struct fake_driver *bridge; + + bridge = fake_bridge->driver_priv; + + mutex_lock(&bridge->vme_int); + + bridge->int_level = level; + + bridge->int_statid = statid; + + /* + * Schedule tasklet to run VME handler to emulate normal VME interrupt + * handler behaviour. + */ + tasklet_schedule(&bridge->int_tasklet); + + mutex_unlock(&bridge->vme_int); + + return 0; +} + +/* + * Initialize a slave window with the requested attributes. + */ +static int fake_slave_set(struct vme_slave_resource *image, int enabled, + unsigned long long vme_base, unsigned long long size, + dma_addr_t buf_base, u32 aspace, u32 cycle) +{ + unsigned int i, granularity = 0; + unsigned long long vme_bound; + struct vme_bridge *fake_bridge; + struct fake_driver *bridge; + + fake_bridge = image->parent; + bridge = fake_bridge->driver_priv; + + i = image->number; + + switch (aspace) { + case VME_A16: + granularity = 0x10; + break; + case VME_A24: + granularity = 0x1000; + break; + case VME_A32: + granularity = 0x10000; + break; + case VME_A64: + granularity = 0x10000; + break; + case VME_CRCSR: + case VME_USER1: + case VME_USER2: + case VME_USER3: + case VME_USER4: + default: + pr_err("Invalid address space\n"); + return -EINVAL; + } + + /* + * Bound address is a valid address for the window, adjust + * accordingly + */ + vme_bound = vme_base + size - granularity; + + if (vme_base & (granularity - 1)) { + pr_err("Invalid VME base alignment\n"); + return -EINVAL; + } + if (vme_bound & (granularity - 1)) { + pr_err("Invalid VME bound alignment\n"); + return -EINVAL; + } + + mutex_lock(&image->mtx); + + bridge->slaves[i].enabled = enabled; + bridge->slaves[i].vme_base = vme_base; + bridge->slaves[i].size = size; + bridge->slaves[i].buf_base = fake_pci_to_ptr(buf_base); + bridge->slaves[i].aspace = aspace; + bridge->slaves[i].cycle = cycle; + + mutex_unlock(&image->mtx); + + return 0; +} + +/* + * Get slave window configuration. + */ +static int fake_slave_get(struct vme_slave_resource *image, int *enabled, + unsigned long long *vme_base, unsigned long long *size, + dma_addr_t *buf_base, u32 *aspace, u32 *cycle) +{ + unsigned int i; + struct fake_driver *bridge; + + bridge = image->parent->driver_priv; + + i = image->number; + + mutex_lock(&image->mtx); + + *enabled = bridge->slaves[i].enabled; + *vme_base = bridge->slaves[i].vme_base; + *size = bridge->slaves[i].size; + *buf_base = fake_ptr_to_pci(bridge->slaves[i].buf_base); + *aspace = bridge->slaves[i].aspace; + *cycle = bridge->slaves[i].cycle; + + mutex_unlock(&image->mtx); + + return 0; +} + +/* + * Set the attributes of an outbound window. + */ +static int fake_master_set(struct vme_master_resource *image, int enabled, + unsigned long long vme_base, unsigned long long size, + u32 aspace, u32 cycle, u32 dwidth) +{ + int retval = 0; + unsigned int i; + struct vme_bridge *fake_bridge; + struct fake_driver *bridge; + + fake_bridge = image->parent; + + bridge = fake_bridge->driver_priv; + + /* Verify input data */ + if (vme_base & 0xFFFF) { + pr_err("Invalid VME Window alignment\n"); + retval = -EINVAL; + goto err_window; + } + + if (size & 0xFFFF) { + pr_err("Invalid size alignment\n"); + retval = -EINVAL; + goto err_window; + } + + if ((size == 0) && (enabled != 0)) { + pr_err("Size must be non-zero for enabled windows\n"); + retval = -EINVAL; + goto err_window; + } + + /* Setup data width */ + switch (dwidth) { + case VME_D8: + case VME_D16: + case VME_D32: + break; + default: + pr_err("Invalid data width\n"); + retval = -EINVAL; + goto err_dwidth; + } + + /* Setup address space */ + switch (aspace) { + case VME_A16: + case VME_A24: + case VME_A32: + case VME_A64: + case VME_CRCSR: + case VME_USER1: + case VME_USER2: + case VME_USER3: + case VME_USER4: + break; + default: + pr_err("Invalid address space\n"); + retval = -EINVAL; + goto err_aspace; + } + + spin_lock(&image->lock); + + i = image->number; + + bridge->masters[i].enabled = enabled; + bridge->masters[i].vme_base = vme_base; + bridge->masters[i].size = size; + bridge->masters[i].aspace = aspace; + bridge->masters[i].cycle = cycle; + bridge->masters[i].dwidth = dwidth; + + spin_unlock(&image->lock); + + return 0; + +err_aspace: +err_dwidth: +err_window: + return retval; + +} + +/* + * Set the attributes of an outbound window. + */ +static int __fake_master_get(struct vme_master_resource *image, int *enabled, + unsigned long long *vme_base, unsigned long long *size, + u32 *aspace, u32 *cycle, u32 *dwidth) +{ + unsigned int i; + struct fake_driver *bridge; + + bridge = image->parent->driver_priv; + + i = image->number; + + *enabled = bridge->masters[i].enabled; + *vme_base = bridge->masters[i].vme_base; + *size = bridge->masters[i].size; + *aspace = bridge->masters[i].aspace; + *cycle = bridge->masters[i].cycle; + *dwidth = bridge->masters[i].dwidth; + + return 0; +} + + +static int fake_master_get(struct vme_master_resource *image, int *enabled, + unsigned long long *vme_base, unsigned long long *size, + u32 *aspace, u32 *cycle, u32 *dwidth) +{ + int retval; + + spin_lock(&image->lock); + + retval = __fake_master_get(image, enabled, vme_base, size, aspace, + cycle, dwidth); + + spin_unlock(&image->lock); + + return retval; +} + + +static void fake_lm_check(struct fake_driver *bridge, unsigned long long addr, + u32 aspace, u32 cycle) +{ + struct vme_bridge *fake_bridge; + unsigned long long lm_base; + u32 lm_aspace, lm_cycle; + int i; + struct vme_lm_resource *lm; + struct list_head *pos = NULL, *n; + + /* Get vme_bridge */ + fake_bridge = bridge->parent; + + /* Loop through each location monitor resource */ + list_for_each_safe(pos, n, &fake_bridge->lm_resources) { + lm = list_entry(pos, struct vme_lm_resource, list); + + /* If disabled, we're done */ + if (bridge->lm_enabled == 0) + return; + + lm_base = bridge->lm_base; + lm_aspace = bridge->lm_aspace; + lm_cycle = bridge->lm_cycle; + + /* First make sure that the cycle and address space match */ + if ((lm_aspace == aspace) && (lm_cycle == cycle)) { + for (i = 0; i < lm->monitors; i++) { + /* Each location monitor covers 8 bytes */ + if (((lm_base + (8 * i)) <= addr) && + ((lm_base + (8 * i) + 8) > addr)) { + if (bridge->lm_callback[i] != NULL) + bridge->lm_callback[i]( + bridge->lm_data[i]); + } + } + } + } +} + +static u8 fake_vmeread8(struct fake_driver *bridge, unsigned long long addr, + u32 aspace, u32 cycle) +{ + u8 retval = 0xff; + int i; + unsigned long long start, end, offset; + u8 *loc; + + for (i = 0; i < FAKE_MAX_SLAVE; i++) { + start = bridge->slaves[i].vme_base; + end = bridge->slaves[i].vme_base + bridge->slaves[i].size; + + if (aspace != bridge->slaves[i].aspace) + continue; + + if (cycle != bridge->slaves[i].cycle) + continue; + + if ((addr >= start) && (addr < end)) { + offset = addr - bridge->slaves[i].vme_base; + loc = (u8 *)(bridge->slaves[i].buf_base + offset); + retval = *loc; + + break; + } + } + + fake_lm_check(bridge, addr, aspace, cycle); + + return retval; +} + +static u16 fake_vmeread16(struct fake_driver *bridge, unsigned long long addr, + u32 aspace, u32 cycle) +{ + u16 retval = 0xffff; + int i; + unsigned long long start, end, offset; + u16 *loc; + + for (i = 0; i < FAKE_MAX_SLAVE; i++) { + if (aspace != bridge->slaves[i].aspace) + continue; + + if (cycle != bridge->slaves[i].cycle) + continue; + + start = bridge->slaves[i].vme_base; + end = bridge->slaves[i].vme_base + bridge->slaves[i].size; + + if ((addr >= start) && ((addr + 1) < end)) { + offset = addr - bridge->slaves[i].vme_base; + loc = (u16 *)(bridge->slaves[i].buf_base + offset); + retval = *loc; + + break; + } + } + + fake_lm_check(bridge, addr, aspace, cycle); + + return retval; +} + +static u32 fake_vmeread32(struct fake_driver *bridge, unsigned long long addr, + u32 aspace, u32 cycle) +{ + u32 retval = 0xffffffff; + int i; + unsigned long long start, end, offset; + u32 *loc; + + for (i = 0; i < FAKE_MAX_SLAVE; i++) { + if (aspace != bridge->slaves[i].aspace) + continue; + + if (cycle != bridge->slaves[i].cycle) + continue; + + start = bridge->slaves[i].vme_base; + end = bridge->slaves[i].vme_base + bridge->slaves[i].size; + + if ((addr >= start) && ((addr + 3) < end)) { + offset = addr - bridge->slaves[i].vme_base; + loc = (u32 *)(bridge->slaves[i].buf_base + offset); + retval = *loc; + + break; + } + } + + fake_lm_check(bridge, addr, aspace, cycle); + + return retval; +} + +static ssize_t fake_master_read(struct vme_master_resource *image, void *buf, + size_t count, loff_t offset) +{ + int retval; + u32 aspace, cycle, dwidth; + struct vme_bridge *fake_bridge; + struct fake_driver *priv; + int i; + unsigned long long addr; + unsigned int done = 0; + unsigned int count32; + + fake_bridge = image->parent; + + priv = fake_bridge->driver_priv; + + i = image->number; + + addr = (unsigned long long)priv->masters[i].vme_base + offset; + aspace = priv->masters[i].aspace; + cycle = priv->masters[i].cycle; + dwidth = priv->masters[i].dwidth; + + spin_lock(&image->lock); + + /* The following code handles VME address alignment. We cannot use + * memcpy_xxx here because it may cut data transfers in to 8-bit + * cycles when D16 or D32 cycles are required on the VME bus. + * On the other hand, the bridge itself assures that the maximum data + * cycle configured for the transfer is used and splits it + * automatically for non-aligned addresses, so we don't want the + * overhead of needlessly forcing small transfers for the entire cycle. + */ + if (addr & 0x1) { + *(u8 *)buf = fake_vmeread8(priv, addr, aspace, cycle); + done += 1; + if (done == count) + goto out; + } + if ((dwidth == VME_D16) || (dwidth == VME_D32)) { + if ((addr + done) & 0x2) { + if ((count - done) < 2) { + *(u8 *)(buf + done) = fake_vmeread8(priv, + addr + done, aspace, cycle); + done += 1; + goto out; + } else { + *(u16 *)(buf + done) = fake_vmeread16(priv, + addr + done, aspace, cycle); + done += 2; + } + } + } + + if (dwidth == VME_D32) { + count32 = (count - done) & ~0x3; + while (done < count32) { + *(u32 *)(buf + done) = fake_vmeread32(priv, addr + done, + aspace, cycle); + done += 4; + } + } else if (dwidth == VME_D16) { + count32 = (count - done) & ~0x3; + while (done < count32) { + *(u16 *)(buf + done) = fake_vmeread16(priv, addr + done, + aspace, cycle); + done += 2; + } + } else if (dwidth == VME_D8) { + count32 = (count - done); + while (done < count32) { + *(u8 *)(buf + done) = fake_vmeread8(priv, addr + done, + aspace, cycle); + done += 1; + } + + } + + if ((dwidth == VME_D16) || (dwidth == VME_D32)) { + if ((count - done) & 0x2) { + *(u16 *)(buf + done) = fake_vmeread16(priv, addr + done, + aspace, cycle); + done += 2; + } + } + if ((count - done) & 0x1) { + *(u8 *)(buf + done) = fake_vmeread8(priv, addr + done, aspace, + cycle); + done += 1; + } + +out: + retval = count; + + spin_unlock(&image->lock); + + return retval; +} + +static void fake_vmewrite8(struct fake_driver *bridge, u8 *buf, + unsigned long long addr, u32 aspace, u32 cycle) +{ + int i; + unsigned long long start, end, offset; + u8 *loc; + + for (i = 0; i < FAKE_MAX_SLAVE; i++) { + if (aspace != bridge->slaves[i].aspace) + continue; + + if (cycle != bridge->slaves[i].cycle) + continue; + + start = bridge->slaves[i].vme_base; + end = bridge->slaves[i].vme_base + bridge->slaves[i].size; + + if ((addr >= start) && (addr < end)) { + offset = addr - bridge->slaves[i].vme_base; + loc = (u8 *)((void *)bridge->slaves[i].buf_base + offset); + *loc = *buf; + + break; + } + } + + fake_lm_check(bridge, addr, aspace, cycle); + +} + +static void fake_vmewrite16(struct fake_driver *bridge, u16 *buf, + unsigned long long addr, u32 aspace, u32 cycle) +{ + int i; + unsigned long long start, end, offset; + u16 *loc; + + for (i = 0; i < FAKE_MAX_SLAVE; i++) { + if (aspace != bridge->slaves[i].aspace) + continue; + + if (cycle != bridge->slaves[i].cycle) + continue; + + start = bridge->slaves[i].vme_base; + end = bridge->slaves[i].vme_base + bridge->slaves[i].size; + + if ((addr >= start) && ((addr + 1) < end)) { + offset = addr - bridge->slaves[i].vme_base; + loc = (u16 *)((void *)bridge->slaves[i].buf_base + offset); + *loc = *buf; + + break; + } + } + + fake_lm_check(bridge, addr, aspace, cycle); + +} + +static void fake_vmewrite32(struct fake_driver *bridge, u32 *buf, + unsigned long long addr, u32 aspace, u32 cycle) +{ + int i; + unsigned long long start, end, offset; + u32 *loc; + + for (i = 0; i < FAKE_MAX_SLAVE; i++) { + if (aspace != bridge->slaves[i].aspace) + continue; + + if (cycle != bridge->slaves[i].cycle) + continue; + + start = bridge->slaves[i].vme_base; + end = bridge->slaves[i].vme_base + bridge->slaves[i].size; + + if ((addr >= start) && ((addr + 3) < end)) { + offset = addr - bridge->slaves[i].vme_base; + loc = (u32 *)((void *)bridge->slaves[i].buf_base + offset); + *loc = *buf; + + break; + } + } + + fake_lm_check(bridge, addr, aspace, cycle); + +} + +static ssize_t fake_master_write(struct vme_master_resource *image, void *buf, + size_t count, loff_t offset) +{ + int retval = 0; + u32 aspace, cycle, dwidth; + unsigned long long addr; + int i; + unsigned int done = 0; + unsigned int count32; + + struct vme_bridge *fake_bridge; + struct fake_driver *bridge; + + fake_bridge = image->parent; + + bridge = fake_bridge->driver_priv; + + i = image->number; + + addr = bridge->masters[i].vme_base + offset; + aspace = bridge->masters[i].aspace; + cycle = bridge->masters[i].cycle; + dwidth = bridge->masters[i].dwidth; + + spin_lock(&image->lock); + + /* Here we apply for the same strategy we do in master_read + * function in order to assure the correct cycles. + */ + if (addr & 0x1) { + fake_vmewrite8(bridge, (u8 *)buf, addr, aspace, cycle); + done += 1; + if (done == count) + goto out; + } + + if ((dwidth == VME_D16) || (dwidth == VME_D32)) { + if ((addr + done) & 0x2) { + if ((count - done) < 2) { + fake_vmewrite8(bridge, (u8 *)(buf + done), + addr + done, aspace, cycle); + done += 1; + goto out; + } else { + fake_vmewrite16(bridge, (u16 *)(buf + done), + addr + done, aspace, cycle); + done += 2; + } + } + } + + if (dwidth == VME_D32) { + count32 = (count - done) & ~0x3; + while (done < count32) { + fake_vmewrite32(bridge, (u32 *)(buf + done), + addr + done, aspace, cycle); + done += 4; + } + } else if (dwidth == VME_D16) { + count32 = (count - done) & ~0x3; + while (done < count32) { + fake_vmewrite16(bridge, (u16 *)(buf + done), + addr + done, aspace, cycle); + done += 2; + } + } else if (dwidth == VME_D8) { + count32 = (count - done); + while (done < count32) { + fake_vmewrite8(bridge, (u8 *)(buf + done), addr + done, + aspace, cycle); + done += 1; + } + + } + + if ((dwidth == VME_D16) || (dwidth == VME_D32)) { + if ((count - done) & 0x2) { + fake_vmewrite16(bridge, (u16 *)(buf + done), + addr + done, aspace, cycle); + done += 2; + } + } + + if ((count - done) & 0x1) { + fake_vmewrite8(bridge, (u8 *)(buf + done), addr + done, aspace, + cycle); + done += 1; + } + +out: + retval = count; + + spin_unlock(&image->lock); + + return retval; +} + +/* + * Perform an RMW cycle on the VME bus. + * + * Requires a previously configured master window, returns final value. + */ +static unsigned int fake_master_rmw(struct vme_master_resource *image, + unsigned int mask, unsigned int compare, unsigned int swap, + loff_t offset) +{ + u32 tmp, base; + u32 aspace, cycle; + int i; + struct fake_driver *bridge; + + bridge = image->parent->driver_priv; + + /* Find the PCI address that maps to the desired VME address */ + i = image->number; + + base = bridge->masters[i].vme_base; + aspace = bridge->masters[i].aspace; + cycle = bridge->masters[i].cycle; + + /* Lock image */ + spin_lock(&image->lock); + + /* Read existing value */ + tmp = fake_vmeread32(bridge, base + offset, aspace, cycle); + + /* Perform check */ + if ((tmp && mask) == (compare && mask)) { + tmp = tmp | (mask | swap); + tmp = tmp & (~mask | swap); + + /* Write back */ + fake_vmewrite32(bridge, &tmp, base + offset, aspace, cycle); + } + + /* Unlock image */ + spin_unlock(&image->lock); + + return tmp; +} + +/* + * All 4 location monitors reside at the same base - this is therefore a + * system wide configuration. + * + * This does not enable the LM monitor - that should be done when the first + * callback is attached and disabled when the last callback is removed. + */ +static int fake_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base, + u32 aspace, u32 cycle) +{ + int i; + struct vme_bridge *fake_bridge; + struct fake_driver *bridge; + + fake_bridge = lm->parent; + + bridge = fake_bridge->driver_priv; + + mutex_lock(&lm->mtx); + + /* If we already have a callback attached, we can't move it! */ + for (i = 0; i < lm->monitors; i++) { + if (bridge->lm_callback[i] != NULL) { + mutex_unlock(&lm->mtx); + pr_err("Location monitor callback attached, can't reset\n"); + return -EBUSY; + } + } + + switch (aspace) { + case VME_A16: + case VME_A24: + case VME_A32: + case VME_A64: + break; + default: + mutex_unlock(&lm->mtx); + pr_err("Invalid address space\n"); + return -EINVAL; + } + + bridge->lm_base = lm_base; + bridge->lm_aspace = aspace; + bridge->lm_cycle = cycle; + + mutex_unlock(&lm->mtx); + + return 0; +} + +/* Get configuration of the callback monitor and return whether it is enabled + * or disabled. + */ +static int fake_lm_get(struct vme_lm_resource *lm, + unsigned long long *lm_base, u32 *aspace, u32 *cycle) +{ + struct fake_driver *bridge; + + bridge = lm->parent->driver_priv; + + mutex_lock(&lm->mtx); + + *lm_base = bridge->lm_base; + *aspace = bridge->lm_aspace; + *cycle = bridge->lm_cycle; + + mutex_unlock(&lm->mtx); + + return bridge->lm_enabled; +} + +/* + * Attach a callback to a specific location monitor. + * + * Callback will be passed the monitor triggered. + */ +static int fake_lm_attach(struct vme_lm_resource *lm, int monitor, + void (*callback)(void *), void *data) +{ + struct vme_bridge *fake_bridge; + struct fake_driver *bridge; + + fake_bridge = lm->parent; + + bridge = fake_bridge->driver_priv; + + mutex_lock(&lm->mtx); + + /* Ensure that the location monitor is configured - need PGM or DATA */ + if (bridge->lm_cycle == 0) { + mutex_unlock(&lm->mtx); + pr_err("Location monitor not properly configured\n"); + return -EINVAL; + } + + /* Check that a callback isn't already attached */ + if (bridge->lm_callback[monitor] != NULL) { + mutex_unlock(&lm->mtx); + pr_err("Existing callback attached\n"); + return -EBUSY; + } + + /* Attach callback */ + bridge->lm_callback[monitor] = callback; + bridge->lm_data[monitor] = data; + + /* Ensure that global Location Monitor Enable set */ + bridge->lm_enabled = 1; + + mutex_unlock(&lm->mtx); + + return 0; +} + +/* + * Detach a callback function forn a specific location monitor. + */ +static int fake_lm_detach(struct vme_lm_resource *lm, int monitor) +{ + u32 tmp; + int i; + struct fake_driver *bridge; + + bridge = lm->parent->driver_priv; + + mutex_lock(&lm->mtx); + + /* Detach callback */ + bridge->lm_callback[monitor] = NULL; + bridge->lm_data[monitor] = NULL; + + /* If all location monitors disabled, disable global Location Monitor */ + tmp = 0; + for (i = 0; i < lm->monitors; i++) { + if (bridge->lm_callback[i] != NULL) + tmp = 1; + } + + if (tmp == 0) + bridge->lm_enabled = 0; + + mutex_unlock(&lm->mtx); + + return 0; +} + +/* + * Determine Geographical Addressing + */ +static int fake_slot_get(struct vme_bridge *fake_bridge) +{ + return geoid; +} + +static void *fake_alloc_consistent(struct device *parent, size_t size, + dma_addr_t *dma) +{ + void *alloc = kmalloc(size, GFP_KERNEL); + + if (alloc != NULL) + *dma = fake_ptr_to_pci(alloc); + + return alloc; +} + +static void fake_free_consistent(struct device *parent, size_t size, + void *vaddr, dma_addr_t dma) +{ + kfree(vaddr); +/* + dma_free_coherent(parent, size, vaddr, dma); +*/ +} + +/* + * Configure CR/CSR space + * + * Access to the CR/CSR can be configured at power-up. The location of the + * CR/CSR registers in the CR/CSR address space is determined by the boards + * Geographic address. + * + * Each board has a 512kB window, with the highest 4kB being used for the + * boards registers, this means there is a fix length 508kB window which must + * be mapped onto PCI memory. + */ +static int fake_crcsr_init(struct vme_bridge *fake_bridge) +{ + u32 vstat; + struct fake_driver *bridge; + + bridge = fake_bridge->driver_priv; + + /* Allocate mem for CR/CSR image */ + bridge->crcsr_kernel = kzalloc(VME_CRCSR_BUF_SIZE, GFP_KERNEL); + bridge->crcsr_bus = fake_ptr_to_pci(bridge->crcsr_kernel); + if (bridge->crcsr_kernel == NULL) + return -ENOMEM; + + vstat = fake_slot_get(fake_bridge); + + pr_info("CR/CSR Offset: %d\n", vstat); + + return 0; +} + +static void fake_crcsr_exit(struct vme_bridge *fake_bridge) +{ + struct fake_driver *bridge; + + bridge = fake_bridge->driver_priv; + + kfree(bridge->crcsr_kernel); +} + + +static int __init fake_init(void) +{ + int retval, i; + struct list_head *pos = NULL, *n; + struct vme_bridge *fake_bridge; + struct fake_driver *fake_device; + struct vme_master_resource *master_image; + struct vme_slave_resource *slave_image; + struct vme_lm_resource *lm; + + /* We need a fake parent device */ + vme_root = __root_device_register("vme", THIS_MODULE); + + /* If we want to support more than one bridge at some point, we need to + * dynamically allocate this so we get one per device. + */ + fake_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL); + if (fake_bridge == NULL) { + retval = -ENOMEM; + goto err_struct; + } + + fake_device = kzalloc(sizeof(struct fake_driver), GFP_KERNEL); + if (fake_device == NULL) { + retval = -ENOMEM; + goto err_driver; + } + + fake_bridge->driver_priv = fake_device; + + fake_bridge->parent = vme_root; + + fake_device->parent = fake_bridge; + + /* Initialize wait queues & mutual exclusion flags */ + mutex_init(&fake_device->vme_int); + mutex_init(&fake_bridge->irq_mtx); + tasklet_init(&fake_device->int_tasklet, fake_VIRQ_tasklet, + (unsigned long) fake_bridge); + + strcpy(fake_bridge->name, driver_name); + + /* Add master windows to list */ + INIT_LIST_HEAD(&fake_bridge->master_resources); + for (i = 0; i < FAKE_MAX_MASTER; i++) { + master_image = kmalloc(sizeof(struct vme_master_resource), + GFP_KERNEL); + if (master_image == NULL) { + retval = -ENOMEM; + goto err_master; + } + master_image->parent = fake_bridge; + spin_lock_init(&master_image->lock); + master_image->locked = 0; + master_image->number = i; + master_image->address_attr = VME_A16 | VME_A24 | VME_A32 | + VME_A64; + master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT | + VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 | + VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER | + VME_PROG | VME_DATA; + master_image->width_attr = VME_D16 | VME_D32; + memset(&master_image->bus_resource, 0, + sizeof(struct resource)); + master_image->kern_base = NULL; + list_add_tail(&master_image->list, + &fake_bridge->master_resources); + } + + /* Add slave windows to list */ + INIT_LIST_HEAD(&fake_bridge->slave_resources); + for (i = 0; i < FAKE_MAX_SLAVE; i++) { + slave_image = kmalloc(sizeof(struct vme_slave_resource), + GFP_KERNEL); + if (slave_image == NULL) { + retval = -ENOMEM; + goto err_slave; + } + slave_image->parent = fake_bridge; + mutex_init(&slave_image->mtx); + slave_image->locked = 0; + slave_image->number = i; + slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 | + VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 | + VME_USER3 | VME_USER4; + slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT | + VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 | + VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER | + VME_PROG | VME_DATA; + list_add_tail(&slave_image->list, + &fake_bridge->slave_resources); + } + + /* Add location monitor to list */ + INIT_LIST_HEAD(&fake_bridge->lm_resources); + lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL); + if (lm == NULL) { + pr_err("Failed to allocate memory for location monitor resource structure\n"); + retval = -ENOMEM; + goto err_lm; + } + lm->parent = fake_bridge; + mutex_init(&lm->mtx); + lm->locked = 0; + lm->number = 1; + lm->monitors = 4; + list_add_tail(&lm->list, &fake_bridge->lm_resources); + + fake_bridge->slave_get = fake_slave_get; + fake_bridge->slave_set = fake_slave_set; + fake_bridge->master_get = fake_master_get; + fake_bridge->master_set = fake_master_set; + fake_bridge->master_read = fake_master_read; + fake_bridge->master_write = fake_master_write; + fake_bridge->master_rmw = fake_master_rmw; + fake_bridge->irq_set = fake_irq_set; + fake_bridge->irq_generate = fake_irq_generate; + fake_bridge->lm_set = fake_lm_set; + fake_bridge->lm_get = fake_lm_get; + fake_bridge->lm_attach = fake_lm_attach; + fake_bridge->lm_detach = fake_lm_detach; + fake_bridge->slot_get = fake_slot_get; + fake_bridge->alloc_consistent = fake_alloc_consistent; + fake_bridge->free_consistent = fake_free_consistent; + + pr_info("Board is%s the VME system controller\n", + (geoid == 1) ? "" : " not"); + + pr_info("VME geographical address is set to %d\n", geoid); + + retval = fake_crcsr_init(fake_bridge); + if (retval) { + pr_err("CR/CSR configuration failed.\n"); + goto err_crcsr; + } + + retval = vme_register_bridge(fake_bridge); + if (retval != 0) { + pr_err("Chip Registration failed.\n"); + goto err_reg; + } + + exit_pointer = fake_bridge; + + return 0; + +err_reg: + fake_crcsr_exit(fake_bridge); +err_crcsr: +err_lm: + /* resources are stored in link list */ + list_for_each_safe(pos, n, &fake_bridge->lm_resources) { + lm = list_entry(pos, struct vme_lm_resource, list); + list_del(pos); + kfree(lm); + } +err_slave: + /* resources are stored in link list */ + list_for_each_safe(pos, n, &fake_bridge->slave_resources) { + slave_image = list_entry(pos, struct vme_slave_resource, list); + list_del(pos); + kfree(slave_image); + } +err_master: + /* resources are stored in link list */ + list_for_each_safe(pos, n, &fake_bridge->master_resources) { + master_image = list_entry(pos, struct vme_master_resource, + list); + list_del(pos); + kfree(master_image); + } + + kfree(fake_device); +err_driver: + kfree(fake_bridge); +err_struct: + return retval; + +} + + +static void __exit fake_exit(void) +{ + struct list_head *pos = NULL; + struct list_head *tmplist; + struct vme_master_resource *master_image; + struct vme_slave_resource *slave_image; + int i; + struct vme_bridge *fake_bridge; + struct fake_driver *bridge; + + fake_bridge = exit_pointer; + + bridge = fake_bridge->driver_priv; + + pr_debug("Driver is being unloaded.\n"); + + /* + * Shutdown all inbound and outbound windows. + */ + for (i = 0; i < FAKE_MAX_MASTER; i++) + bridge->masters[i].enabled = 0; + + for (i = 0; i < FAKE_MAX_SLAVE; i++) + bridge->slaves[i].enabled = 0; + + /* + * Shutdown Location monitor. + */ + bridge->lm_enabled = 0; + + vme_unregister_bridge(fake_bridge); + + fake_crcsr_exit(fake_bridge); + /* resources are stored in link list */ + list_for_each_safe(pos, tmplist, &fake_bridge->slave_resources) { + slave_image = list_entry(pos, struct vme_slave_resource, list); + list_del(pos); + kfree(slave_image); + } + + /* resources are stored in link list */ + list_for_each_safe(pos, tmplist, &fake_bridge->master_resources) { + master_image = list_entry(pos, struct vme_master_resource, + list); + list_del(pos); + kfree(master_image); + } + + kfree(fake_bridge->driver_priv); + + kfree(fake_bridge); + + root_device_unregister(vme_root); +} + + +MODULE_PARM_DESC(geoid, "Set geographical addressing"); +module_param(geoid, int, 0); + +MODULE_DESCRIPTION("Fake VME bridge driver"); +MODULE_LICENSE("GPL"); + +module_init(fake_init); +module_exit(fake_exit); diff --git a/drivers/vme/bridges/vme_tsi148.c b/drivers/vme/bridges/vme_tsi148.c index 4bc5d45..fc1b634 100644 --- a/drivers/vme/bridges/vme_tsi148.c +++ b/drivers/vme/bridges/vme_tsi148.c @@ -50,6 +50,8 @@ static const struct pci_device_id tsi148_ids[] = { { }, }; +MODULE_DEVICE_TABLE(pci, tsi148_ids); + static struct pci_driver tsi148_driver = { .name = driver_name, .id_table = tsi148_ids, @@ -102,7 +104,7 @@ static u32 tsi148_LM_irqhandler(struct tsi148_driver *bridge, u32 stat) for (i = 0; i < 4; i++) { if (stat & TSI148_LCSR_INTS_LMS[i]) { /* We only enable interrupts if the callback is set */ - bridge->lm_callback[i](i); + bridge->lm_callback[i](bridge->lm_data[i]); serviced |= TSI148_LCSR_INTC_LMC[i]; } } @@ -2047,7 +2049,7 @@ static int tsi148_lm_get(struct vme_lm_resource *lm, * Callback will be passed the monitor triggered. */ static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor, - void (*callback)(int)) + void (*callback)(void *), void *data) { u32 lm_ctl, tmp; struct vme_bridge *tsi148_bridge; @@ -2077,6 +2079,7 @@ static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor, /* Attach callback */ bridge->lm_callback[monitor] = callback; + bridge->lm_data[monitor] = data; /* Enable Location Monitor interrupt */ tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN); @@ -2124,6 +2127,7 @@ static int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor) /* Detach callback */ bridge->lm_callback[monitor] = NULL; + bridge->lm_data[monitor] = NULL; /* If all location monitors disabled, disable global Location Monitor */ if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S | diff --git a/drivers/vme/bridges/vme_tsi148.h b/drivers/vme/bridges/vme_tsi148.h index f5ed1438..0935d85 100644 --- a/drivers/vme/bridges/vme_tsi148.h +++ b/drivers/vme/bridges/vme_tsi148.h @@ -38,7 +38,8 @@ struct tsi148_driver { void __iomem *base; /* Base Address of device registers */ wait_queue_head_t dma_queue[2]; wait_queue_head_t iack_queue; - void (*lm_callback[4])(int); /* Called in interrupt handler */ + void (*lm_callback[4])(void *); /* Called in interrupt handler */ + void *lm_data[4]; void *crcsr_kernel; dma_addr_t crcsr_bus; struct vme_master_resource *flush_image; diff --git a/drivers/vme/vme.c b/drivers/vme/vme.c index 37ac0a5..15b6407 100644 --- a/drivers/vme/vme.c +++ b/drivers/vme/vme.c @@ -13,8 +13,8 @@ * option) any later version. */ -#include <linux/module.h> -#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/export.h> #include <linux/mm.h> #include <linux/types.h> #include <linux/kernel.h> @@ -39,7 +39,6 @@ static unsigned int vme_bus_numbers; static LIST_HEAD(vme_bus_list); static DEFINE_MUTEX(vme_buses_lock); -static void __exit vme_exit(void); static int __init vme_init(void); static struct vme_dev *dev_to_vme_dev(struct device *dev) @@ -1321,7 +1320,7 @@ int vme_lm_get(struct vme_resource *resource, unsigned long long *lm_base, EXPORT_SYMBOL(vme_lm_get); int vme_lm_attach(struct vme_resource *resource, int monitor, - void (*callback)(int)) + void (*callback)(void *), void *data) { struct vme_bridge *bridge = find_bridge(resource); struct vme_lm_resource *lm; @@ -1338,7 +1337,7 @@ int vme_lm_attach(struct vme_resource *resource, int monitor, return -EINVAL; } - return bridge->lm_attach(lm, monitor, callback); + return bridge->lm_attach(lm, monitor, callback, data); } EXPORT_SYMBOL(vme_lm_attach); @@ -1622,25 +1621,10 @@ static int vme_bus_probe(struct device *dev) return retval; } -static int vme_bus_remove(struct device *dev) -{ - int retval = -ENODEV; - struct vme_driver *driver; - struct vme_dev *vdev = dev_to_vme_dev(dev); - - driver = dev->platform_data; - - if (driver->remove != NULL) - retval = driver->remove(vdev); - - return retval; -} - struct bus_type vme_bus_type = { .name = "vme", .match = vme_bus_match, .probe = vme_bus_probe, - .remove = vme_bus_remove, }; EXPORT_SYMBOL(vme_bus_type); @@ -1648,11 +1632,4 @@ static int __init vme_init(void) { return bus_register(&vme_bus_type); } - -static void __exit vme_exit(void) -{ - bus_unregister(&vme_bus_type); -} - subsys_initcall(vme_init); -module_exit(vme_exit); diff --git a/drivers/vme/vme_bridge.h b/drivers/vme/vme_bridge.h index cb8246f..2662e91 100644 --- a/drivers/vme/vme_bridge.h +++ b/drivers/vme/vme_bridge.h @@ -160,7 +160,8 @@ struct vme_bridge { int (*lm_set) (struct vme_lm_resource *, unsigned long long, u32, u32); int (*lm_get) (struct vme_lm_resource *, unsigned long long *, u32 *, u32 *); - int (*lm_attach) (struct vme_lm_resource *, int, void (*callback)(int)); + int (*lm_attach)(struct vme_lm_resource *, int, + void (*callback)(void *), void *); int (*lm_detach) (struct vme_lm_resource *, int); /* CR/CSR space functions */ diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c index 581a300..82611f1 100644 --- a/drivers/w1/slaves/w1_therm.c +++ b/drivers/w1/slaves/w1_therm.c @@ -66,7 +66,7 @@ struct w1_therm_family_data { /* return the address of the refcnt in the family data */ #define THERM_REFCNT(family_data) \ - (&((struct w1_therm_family_data*)family_data)->refcnt) + (&((struct w1_therm_family_data *)family_data)->refcnt) static int w1_therm_add_slave(struct w1_slave *sl) { @@ -81,7 +81,8 @@ static int w1_therm_add_slave(struct w1_slave *sl) static void w1_therm_remove_slave(struct w1_slave *sl) { int refcnt = atomic_sub_return(1, THERM_REFCNT(sl->family_data)); - while(refcnt) { + + while (refcnt) { msleep(1000); refcnt = atomic_read(THERM_REFCNT(sl->family_data)); } @@ -151,8 +152,7 @@ static struct w1_family w1_therm_family_DS1825 = { .fops = &w1_therm_fops, }; -struct w1_therm_family_converter -{ +struct w1_therm_family_converter { u8 broken; u16 reserved; struct w1_family *f; @@ -293,7 +293,7 @@ static inline int w1_DS18B20_precision(struct device *device, int val) uint8_t precision_bits; uint8_t mask = 0x60; - if(val > 12 || val < 9) { + if (val > 12 || val < 9) { pr_warn("Unsupported precision\n"); return -1; } @@ -336,7 +336,8 @@ static inline int w1_DS18B20_precision(struct device *device, int val) /* read values to only alter precision bits */ w1_write_8(dev, W1_READ_SCRATCHPAD); - if ((count = w1_read_block(dev, rom, 9)) != 9) + count = w1_read_block(dev, rom, 9); + if (count != 9) dev_warn(device, "w1_read_block() returned %u instead of 9.\n", count); crc = w1_calc_crc8(rom, 8); @@ -366,6 +367,7 @@ post_unlock: static inline int w1_DS18B20_convert_temp(u8 rom[9]) { s16 t = le16_to_cpup((__le16 *)rom); + return t*1000/16; } @@ -415,7 +417,7 @@ static ssize_t w1_slave_store(struct device *device, for (i = 0; i < ARRAY_SIZE(w1_therm_families); ++i) { if (w1_therm_families[i].f->fid == sl->family->fid) { /* zero value indicates to write current configuration to eeprom */ - if (0 == val) + if (val == 0) ret = w1_therm_families[i].eeprom(device); else ret = w1_therm_families[i].precision(device, val); @@ -439,8 +441,7 @@ static ssize_t w1_slave_show(struct device *device, if (ret != 0) goto post_unlock; - if(!sl->family_data) - { + if (!sl->family_data) { ret = -ENODEV; goto pre_unlock; } @@ -495,7 +496,8 @@ static ssize_t w1_slave_show(struct device *device, if (!w1_reset_select_slave(sl)) { w1_write_8(dev, W1_READ_SCRATCHPAD); - if ((count = w1_read_block(dev, rom, 9)) != 9) { + count = w1_read_block(dev, rom, 9); + if (count != 9) { dev_warn(device, "w1_read_block() " "returned %u instead of 9.\n", count); diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index bb34362..e213c67 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -53,8 +53,8 @@ int w1_max_slave_ttl = 10; module_param_named(timeout, w1_timeout, int, 0); MODULE_PARM_DESC(timeout, "time in seconds between automatic slave searches"); module_param_named(timeout_us, w1_timeout_us, int, 0); -MODULE_PARM_DESC(timeout, "time in microseconds between automatic slave" - " searches"); +MODULE_PARM_DESC(timeout_us, + "time in microseconds between automatic slave searches"); /* A search stops when w1_max_slave_count devices have been found in that * search. The next search will start over and detect the same set of devices * on a static 1-wire bus. Memory is not allocated based on this number, just diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 385d62e..2a5982c 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -232,8 +232,9 @@ struct coresight_ops_source { int (*cpu_id)(struct coresight_device *csdev); int (*trace_id)(struct coresight_device *csdev); int (*enable)(struct coresight_device *csdev, - struct perf_event_attr *attr, u32 mode); - void (*disable)(struct coresight_device *csdev); + struct perf_event *event, u32 mode); + void (*disable)(struct coresight_device *csdev, + struct perf_event *event); }; struct coresight_ops { diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index b10954a..cd184bd 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -674,6 +674,11 @@ enum hv_signal_policy { HV_SIGNAL_POLICY_EXPLICIT, }; +enum hv_numa_policy { + HV_BALANCED = 0, + HV_LOCALIZED, +}; + enum vmbus_device_type { HV_IDE = 0, HV_SCSI, @@ -701,9 +706,6 @@ struct vmbus_device { }; struct vmbus_channel { - /* Unique channel id */ - int id; - struct list_head listentry; struct hv_device *device_obj; @@ -850,6 +852,43 @@ struct vmbus_channel { * ring lock to preserve the current behavior. */ bool acquire_ring_lock; + /* + * For performance critical channels (storage, networking + * etc,), Hyper-V has a mechanism to enhance the throughput + * at the expense of latency: + * When the host is to be signaled, we just set a bit in a shared page + * and this bit will be inspected by the hypervisor within a certain + * window and if the bit is set, the host will be signaled. The window + * of time is the monitor latency - currently around 100 usecs. This + * mechanism improves throughput by: + * + * A) Making the host more efficient - each time it wakes up, + * potentially it will process morev number of packets. The + * monitor latency allows a batch to build up. + * B) By deferring the hypercall to signal, we will also minimize + * the interrupts. + * + * Clearly, these optimizations improve throughput at the expense of + * latency. Furthermore, since the channel is shared for both + * control and data messages, control messages currently suffer + * unnecessary latency adversley impacting performance and boot + * time. To fix this issue, permit tagging the channel as being + * in "low latency" mode. In this mode, we will bypass the monitor + * mechanism. + */ + bool low_latency; + + /* + * NUMA distribution policy: + * We support teo policies: + * 1) Balanced: Here all performance critical channels are + * distributed evenly amongst all the NUMA nodes. + * This policy will be the default policy. + * 2) Localized: All channels of a given instance of a + * performance critical service will be assigned CPUs + * within a selected NUMA node. + */ + enum hv_numa_policy affinity_policy; }; @@ -870,6 +909,12 @@ static inline void set_channel_signal_state(struct vmbus_channel *c, c->signal_policy = policy; } +static inline void set_channel_affinity_state(struct vmbus_channel *c, + enum hv_numa_policy policy) +{ + c->affinity_policy = policy; +} + static inline void set_channel_read_state(struct vmbus_channel *c, bool state) { c->batched_reading = state; @@ -891,6 +936,16 @@ static inline void set_channel_pending_send_size(struct vmbus_channel *c, c->outbound.ring_buffer->pending_send_sz = size; } +static inline void set_low_latency_mode(struct vmbus_channel *c) +{ + c->low_latency = true; +} + +static inline void clear_low_latency_mode(struct vmbus_channel *c) +{ + c->low_latency = false; +} + void vmbus_onmessage(void *context); int vmbus_request_offers(void); @@ -1257,6 +1312,27 @@ u64 hv_do_hypercall(u64 control, void *input, void *output); 0x80, 0x2e, 0x27, 0xed, 0xe1, 0x9f) /* + * Linux doesn't support the 3 devices: the first two are for + * Automatic Virtual Machine Activation, and the third is for + * Remote Desktop Virtualization. + * {f8e65716-3cb3-4a06-9a60-1889c5cccab5} + * {3375baf4-9e15-4b30-b765-67acb10d607b} + * {276aacf4-ac15-426c-98dd-7521ad3f01fe} + */ + +#define HV_AVMA1_GUID \ + .guid = UUID_LE(0xf8e65716, 0x3cb3, 0x4a06, 0x9a, 0x60, \ + 0x18, 0x89, 0xc5, 0xcc, 0xca, 0xb5) + +#define HV_AVMA2_GUID \ + .guid = UUID_LE(0x3375baf4, 0x9e15, 0x4b30, 0xb7, 0x65, \ + 0x67, 0xac, 0xb1, 0x0d, 0x60, 0x7b) + +#define HV_RDV_GUID \ + .guid = UUID_LE(0x276aacf4, 0xac15, 0x426c, 0x98, 0xdd, \ + 0x75, 0x21, 0xad, 0x3f, 0x01, 0xfe) + +/* * Common header for Hyper-V ICs */ @@ -1344,6 +1420,15 @@ struct ictimesync_data { u8 flags; } __packed; +struct ictimesync_ref_data { + u64 parenttime; + u64 vmreferencetime; + u8 flags; + char leapflags; + char stratum; + u8 reserved[3]; +} __packed; + struct hyperv_service_callback { u8 msg_type; char *log_msg; @@ -1357,6 +1442,9 @@ extern bool vmbus_prep_negotiate_resp(struct icmsg_hdr *, struct icmsg_negotiate *, u8 *, int, int); +void hv_event_tasklet_disable(struct vmbus_channel *channel); +void hv_event_tasklet_enable(struct vmbus_channel *channel); + void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid); /* diff --git a/include/linux/mcb.h b/include/linux/mcb.h index ead13d2..4097ac9 100644 --- a/include/linux/mcb.h +++ b/include/linux/mcb.h @@ -41,15 +41,17 @@ struct mcb_bus { char name[CHAMELEON_FILENAME_LEN + 1]; int (*get_irq)(struct mcb_device *dev); }; -#define to_mcb_bus(b) container_of((b), struct mcb_bus, dev) + +static inline struct mcb_bus *to_mcb_bus(struct device *dev) +{ + return container_of(dev, struct mcb_bus, dev); +} /** * struct mcb_device - MEN Chameleon Bus device * - * @bus_list: internal list handling for bus code * @dev: device in kernel representation * @bus: mcb bus the device is plugged to - * @subordinate: subordinate MCBus in case of bridge * @is_added: flag to check if device is added to bus * @driver: associated mcb_driver * @id: mcb device id @@ -62,10 +64,8 @@ struct mcb_bus { * @memory: memory resource */ struct mcb_device { - struct list_head bus_list; struct device dev; struct mcb_bus *bus; - struct mcb_bus *subordinate; bool is_added; struct mcb_driver *driver; u16 id; @@ -76,8 +76,13 @@ struct mcb_device { int rev; struct resource irq; struct resource mem; + struct device *dma_dev; }; -#define to_mcb_device(x) container_of((x), struct mcb_device, dev) + +static inline struct mcb_device *to_mcb_device(struct device *dev) +{ + return container_of(dev, struct mcb_device, dev); +} /** * struct mcb_driver - MEN Chameleon Bus device driver @@ -95,7 +100,11 @@ struct mcb_driver { void (*remove)(struct mcb_device *mdev); void (*shutdown)(struct mcb_device *mdev); }; -#define to_mcb_driver(x) container_of((x), struct mcb_driver, driver) + +static inline struct mcb_driver *to_mcb_driver(struct device_driver *drv) +{ + return container_of(drv, struct mcb_driver, driver); +} static inline void *mcb_get_drvdata(struct mcb_device *dev) { diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h index 5430374..722698a 100644 --- a/include/linux/miscdevice.h +++ b/include/linux/miscdevice.h @@ -3,6 +3,7 @@ #include <linux/major.h> #include <linux/list.h> #include <linux/types.h> +#include <linux/device.h> /* * These allocations are managed by device@lanana.org. If you use an @@ -70,6 +71,13 @@ struct miscdevice { extern int misc_register(struct miscdevice *misc); extern void misc_deregister(struct miscdevice *misc); +/* + * Helper macro for drivers that don't do anything special in module init / exit + * call. This helps in eleminating of boilerplate code. + */ +#define module_misc_device(__misc_device) \ + module_driver(__misc_device, misc_register, misc_deregister) + #define MODULE_ALIAS_MISCDEV(minor) \ MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR) \ "-" __stringify(minor)) diff --git a/include/linux/vme.h b/include/linux/vme.h index 71e4a6d..ea6095d 100644 --- a/include/linux/vme.h +++ b/include/linux/vme.h @@ -166,7 +166,7 @@ struct vme_resource *vme_lm_request(struct vme_dev *); int vme_lm_count(struct vme_resource *); int vme_lm_set(struct vme_resource *, unsigned long long, u32, u32); int vme_lm_get(struct vme_resource *, unsigned long long *, u32 *, u32 *); -int vme_lm_attach(struct vme_resource *, int, void (*callback)(int)); +int vme_lm_attach(struct vme_resource *, int, void (*callback)(void *), void *); int vme_lm_detach(struct vme_resource *, int); void vme_lm_free(struct vme_resource *); diff --git a/scripts/checkkconfigsymbols.py b/scripts/checkkconfigsymbols.py index df643f6..a32e4da 100755 --- a/scripts/checkkconfigsymbols.py +++ b/scripts/checkkconfigsymbols.py @@ -1,98 +1,99 @@ -#!/usr/bin/env python2 +#!/usr/bin/env python3 """Find Kconfig symbols that are referenced but not defined.""" -# (c) 2014-2015 Valentin Rothberg <valentinrothberg@gmail.com> +# (c) 2014-2016 Valentin Rothberg <valentinrothberg@gmail.com> # (c) 2014 Stefan Hengelein <stefan.hengelein@fau.de> # # Licensed under the terms of the GNU GPL License version 2 +import argparse import difflib import os import re import signal +import subprocess import sys from multiprocessing import Pool, cpu_count -from optparse import OptionParser -from subprocess import Popen, PIPE, STDOUT # regex expressions OPERATORS = r"&|\(|\)|\||\!" -FEATURE = r"(?:\w*[A-Z0-9]\w*){2,}" -DEF = r"^\s*(?:menu){,1}config\s+(" + FEATURE + r")\s*" -EXPR = r"(?:" + OPERATORS + r"|\s|" + FEATURE + r")+" +SYMBOL = r"(?:\w*[A-Z0-9]\w*){2,}" +DEF = r"^\s*(?:menu){,1}config\s+(" + SYMBOL + r")\s*" +EXPR = r"(?:" + OPERATORS + r"|\s|" + SYMBOL + r")+" DEFAULT = r"default\s+.*?(?:if\s.+){,1}" STMT = r"^\s*(?:if|select|depends\s+on|(?:" + DEFAULT + r"))\s+" + EXPR -SOURCE_FEATURE = r"(?:\W|\b)+[D]{,1}CONFIG_(" + FEATURE + r")" +SOURCE_SYMBOL = r"(?:\W|\b)+[D]{,1}CONFIG_(" + SYMBOL + r")" # regex objects REGEX_FILE_KCONFIG = re.compile(r".*Kconfig[\.\w+\-]*$") -REGEX_FEATURE = re.compile(r'(?!\B)' + FEATURE + r'(?!\B)') -REGEX_SOURCE_FEATURE = re.compile(SOURCE_FEATURE) +REGEX_SYMBOL = re.compile(r'(?!\B)' + SYMBOL + r'(?!\B)') +REGEX_SOURCE_SYMBOL = re.compile(SOURCE_SYMBOL) REGEX_KCONFIG_DEF = re.compile(DEF) REGEX_KCONFIG_EXPR = re.compile(EXPR) REGEX_KCONFIG_STMT = re.compile(STMT) REGEX_KCONFIG_HELP = re.compile(r"^\s+(help|---help---)\s*$") -REGEX_FILTER_FEATURES = re.compile(r"[A-Za-z0-9]$") +REGEX_FILTER_SYMBOLS = re.compile(r"[A-Za-z0-9]$") REGEX_NUMERIC = re.compile(r"0[xX][0-9a-fA-F]+|[0-9]+") REGEX_QUOTES = re.compile("(\"(.*?)\")") def parse_options(): """The user interface of this module.""" - usage = "%prog [options]\n\n" \ - "Run this tool to detect Kconfig symbols that are referenced but " \ - "not defined in\nKconfig. The output of this tool has the " \ - "format \'Undefined symbol\\tFile list\'\n\n" \ - "If no option is specified, %prog will default to check your\n" \ - "current tree. Please note that specifying commits will " \ - "\'git reset --hard\'\nyour current tree! You may save " \ - "uncommitted changes to avoid losing data." - - parser = OptionParser(usage=usage) - - parser.add_option('-c', '--commit', dest='commit', action='store', - default="", - help="Check if the specified commit (hash) introduces " - "undefined Kconfig symbols.") - - parser.add_option('-d', '--diff', dest='diff', action='store', - default="", - help="Diff undefined symbols between two commits. The " - "input format bases on Git log's " - "\'commmit1..commit2\'.") - - parser.add_option('-f', '--find', dest='find', action='store_true', - default=False, - help="Find and show commits that may cause symbols to be " - "missing. Required to run with --diff.") - - parser.add_option('-i', '--ignore', dest='ignore', action='store', - default="", - help="Ignore files matching this pattern. Note that " - "the pattern needs to be a Python regex. To " - "ignore defconfigs, specify -i '.*defconfig'.") - - parser.add_option('-s', '--sim', dest='sim', action='store', default="", - help="Print a list of maximum 10 string-similar symbols.") - - parser.add_option('', '--force', dest='force', action='store_true', - default=False, - help="Reset current Git tree even when it's dirty.") - - (opts, _) = parser.parse_args() - - if opts.commit and opts.diff: + usage = "Run this tool to detect Kconfig symbols that are referenced but " \ + "not defined in Kconfig. If no option is specified, " \ + "checkkconfigsymbols defaults to check your current tree. " \ + "Please note that specifying commits will 'git reset --hard\' " \ + "your current tree! You may save uncommitted changes to avoid " \ + "losing data." + + parser = argparse.ArgumentParser(description=usage) + + parser.add_argument('-c', '--commit', dest='commit', action='store', + default="", + help="check if the specified commit (hash) introduces " + "undefined Kconfig symbols") + + parser.add_argument('-d', '--diff', dest='diff', action='store', + default="", + help="diff undefined symbols between two commits " + "(e.g., -d commmit1..commit2)") + + parser.add_argument('-f', '--find', dest='find', action='store_true', + default=False, + help="find and show commits that may cause symbols to be " + "missing (required to run with --diff)") + + parser.add_argument('-i', '--ignore', dest='ignore', action='store', + default="", + help="ignore files matching this Python regex " + "(e.g., -i '.*defconfig')") + + parser.add_argument('-s', '--sim', dest='sim', action='store', default="", + help="print a list of max. 10 string-similar symbols") + + parser.add_argument('--force', dest='force', action='store_true', + default=False, + help="reset current Git tree even when it's dirty") + + parser.add_argument('--no-color', dest='color', action='store_false', + default=True, + help="don't print colored output (default when not " + "outputting to a terminal)") + + args = parser.parse_args() + + if args.commit and args.diff: sys.exit("Please specify only one option at once.") - if opts.diff and not re.match(r"^[\w\-\.]+\.\.[\w\-\.]+$", opts.diff): + if args.diff and not re.match(r"^[\w\-\.]+\.\.[\w\-\.]+$", args.diff): sys.exit("Please specify valid input in the following format: " "\'commit1..commit2\'") - if opts.commit or opts.diff: - if not opts.force and tree_is_dirty(): + if args.commit or args.diff: + if not args.force and tree_is_dirty(): sys.exit("The current Git tree is dirty (see 'git status'). " "Running this script may\ndelete important data since it " "calls 'git reset --hard' for some performance\nreasons. " @@ -100,138 +101,148 @@ def parse_options(): "'--force' if you\nwant to ignore this warning and " "continue.") - if opts.commit: - opts.find = False + if args.commit: + args.find = False - if opts.ignore: + if args.ignore: try: - re.match(opts.ignore, "this/is/just/a/test.c") + re.match(args.ignore, "this/is/just/a/test.c") except: sys.exit("Please specify a valid Python regex.") - return opts + return args def main(): """Main function of this module.""" - opts = parse_options() + args = parse_options() - if opts.sim and not opts.commit and not opts.diff: - sims = find_sims(opts.sim, opts.ignore) + global COLOR + COLOR = args.color and sys.stdout.isatty() + + if args.sim and not args.commit and not args.diff: + sims = find_sims(args.sim, args.ignore) if sims: - print "%s: %s" % (yel("Similar symbols"), ', '.join(sims)) + print("%s: %s" % (yel("Similar symbols"), ', '.join(sims))) else: - print "%s: no similar symbols found" % yel("Similar symbols") + print("%s: no similar symbols found" % yel("Similar symbols")) sys.exit(0) # dictionary of (un)defined symbols defined = {} undefined = {} - if opts.commit or opts.diff: + if args.commit or args.diff: head = get_head() # get commit range commit_a = None commit_b = None - if opts.commit: - commit_a = opts.commit + "~" - commit_b = opts.commit - elif opts.diff: - split = opts.diff.split("..") + if args.commit: + commit_a = args.commit + "~" + commit_b = args.commit + elif args.diff: + split = args.diff.split("..") commit_a = split[0] commit_b = split[1] undefined_a = {} undefined_b = {} # get undefined items before the commit - execute("git reset --hard %s" % commit_a) - undefined_a, _ = check_symbols(opts.ignore) + reset(commit_a) + undefined_a, _ = check_symbols(args.ignore) # get undefined items for the commit - execute("git reset --hard %s" % commit_b) - undefined_b, defined = check_symbols(opts.ignore) + reset(commit_b) + undefined_b, defined = check_symbols(args.ignore) # report cases that are present for the commit but not before - for feature in sorted(undefined_b): - # feature has not been undefined before - if not feature in undefined_a: - files = sorted(undefined_b.get(feature)) - undefined[feature] = files - # check if there are new files that reference the undefined feature + for symbol in sorted(undefined_b): + # symbol has not been undefined before + if symbol not in undefined_a: + files = sorted(undefined_b.get(symbol)) + undefined[symbol] = files + # check if there are new files that reference the undefined symbol else: - files = sorted(undefined_b.get(feature) - - undefined_a.get(feature)) + files = sorted(undefined_b.get(symbol) - + undefined_a.get(symbol)) if files: - undefined[feature] = files + undefined[symbol] = files # reset to head - execute("git reset --hard %s" % head) + reset(head) # default to check the entire tree else: - undefined, defined = check_symbols(opts.ignore) + undefined, defined = check_symbols(args.ignore) # now print the output - for feature in sorted(undefined): - print red(feature) + for symbol in sorted(undefined): + print(red(symbol)) - files = sorted(undefined.get(feature)) - print "%s: %s" % (yel("Referencing files"), ", ".join(files)) + files = sorted(undefined.get(symbol)) + print("%s: %s" % (yel("Referencing files"), ", ".join(files))) - sims = find_sims(feature, opts.ignore, defined) + sims = find_sims(symbol, args.ignore, defined) sims_out = yel("Similar symbols") if sims: - print "%s: %s" % (sims_out, ', '.join(sims)) + print("%s: %s" % (sims_out, ', '.join(sims))) else: - print "%s: %s" % (sims_out, "no similar symbols found") + print("%s: %s" % (sims_out, "no similar symbols found")) - if opts.find: - print "%s:" % yel("Commits changing symbol") - commits = find_commits(feature, opts.diff) + if args.find: + print("%s:" % yel("Commits changing symbol")) + commits = find_commits(symbol, args.diff) if commits: for commit in commits: commit = commit.split(" ", 1) - print "\t- %s (\"%s\")" % (yel(commit[0]), commit[1]) + print("\t- %s (\"%s\")" % (yel(commit[0]), commit[1])) else: - print "\t- no commit found" - print # new line + print("\t- no commit found") + print() # new line + + +def reset(commit): + """Reset current git tree to %commit.""" + execute(["git", "reset", "--hard", commit]) def yel(string): """ Color %string yellow. """ - return "\033[33m%s\033[0m" % string + return "\033[33m%s\033[0m" % string if COLOR else string def red(string): """ Color %string red. """ - return "\033[31m%s\033[0m" % string + return "\033[31m%s\033[0m" % string if COLOR else string def execute(cmd): """Execute %cmd and return stdout. Exit in case of error.""" - pop = Popen(cmd, stdout=PIPE, stderr=STDOUT, shell=True) - (stdout, _) = pop.communicate() # wait until finished - if pop.returncode != 0: - sys.exit(stdout) + try: + stdout = subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=False) + stdout = stdout.decode(errors='replace') + except subprocess.CalledProcessError as fail: + exit(fail) return stdout def find_commits(symbol, diff): """Find commits changing %symbol in the given range of %diff.""" - commits = execute("git log --pretty=oneline --abbrev-commit -G %s %s" - % (symbol, diff)) + commits = execute(["git", "log", "--pretty=oneline", + "--abbrev-commit", "-G", + symbol, diff]) return [x for x in commits.split("\n") if x] def tree_is_dirty(): """Return true if the current working tree is dirty (i.e., if any file has been added, deleted, modified, renamed or copied but not committed).""" - stdout = execute("git status --porcelain") + stdout = execute(["git", "status", "--porcelain"]) for line in stdout: if re.findall(r"[URMADC]{1}", line[:2]): return True @@ -240,13 +251,13 @@ def tree_is_dirty(): def get_head(): """Return commit hash of current HEAD.""" - stdout = execute("git rev-parse HEAD") + stdout = execute(["git", "rev-parse", "HEAD"]) return stdout.strip('\n') def partition(lst, size): """Partition list @lst into eveni-sized lists of size @size.""" - return [lst[i::size] for i in xrange(size)] + return [lst[i::size] for i in range(size)] def init_worker(): @@ -254,7 +265,7 @@ def init_worker(): signal.signal(signal.SIGINT, signal.SIG_IGN) -def find_sims(symbol, ignore, defined = []): +def find_sims(symbol, ignore, defined=[]): """Return a list of max. ten Kconfig symbols that are string-similar to @symbol.""" if defined: @@ -279,7 +290,7 @@ def find_sims(symbol, ignore, defined = []): def get_files(): """Return a list of all files in the current git directory.""" # use 'git ls-files' to get the worklist - stdout = execute("git ls-files") + stdout = execute(["git", "ls-files"]) if len(stdout) > 0 and stdout[-1] == "\n": stdout = stdout[:-1] @@ -311,8 +322,8 @@ def check_symbols_helper(pool, ignore): check_symbols() in order to properly terminate running worker processes.""" source_files = [] kconfig_files = [] - defined_features = [] - referenced_features = dict() # {file: [features]} + defined_symbols = [] + referenced_symbols = dict() # {file: [symbols]} for gitfile in get_files(): if REGEX_FILE_KCONFIG.match(gitfile): @@ -326,76 +337,75 @@ def check_symbols_helper(pool, ignore): # parse source files arglist = partition(source_files, cpu_count()) for res in pool.map(parse_source_files, arglist): - referenced_features.update(res) - + referenced_symbols.update(res) # parse kconfig files arglist = [] for part in partition(kconfig_files, cpu_count()): arglist.append((part, ignore)) for res in pool.map(parse_kconfig_files, arglist): - defined_features.extend(res[0]) - referenced_features.update(res[1]) - defined_features = set(defined_features) + defined_symbols.extend(res[0]) + referenced_symbols.update(res[1]) + defined_symbols = set(defined_symbols) - # inverse mapping of referenced_features to dict(feature: [files]) + # inverse mapping of referenced_symbols to dict(symbol: [files]) inv_map = dict() - for _file, features in referenced_features.iteritems(): - for feature in features: - inv_map[feature] = inv_map.get(feature, set()) - inv_map[feature].add(_file) - referenced_features = inv_map - - undefined = {} # {feature: [files]} - for feature in sorted(referenced_features): + for _file, symbols in referenced_symbols.items(): + for symbol in symbols: + inv_map[symbol] = inv_map.get(symbol, set()) + inv_map[symbol].add(_file) + referenced_symbols = inv_map + + undefined = {} # {symbol: [files]} + for symbol in sorted(referenced_symbols): # filter some false positives - if feature == "FOO" or feature == "BAR" or \ - feature == "FOO_BAR" or feature == "XXX": + if symbol == "FOO" or symbol == "BAR" or \ + symbol == "FOO_BAR" or symbol == "XXX": continue - if feature not in defined_features: - if feature.endswith("_MODULE"): + if symbol not in defined_symbols: + if symbol.endswith("_MODULE"): # avoid false positives for kernel modules - if feature[:-len("_MODULE")] in defined_features: + if symbol[:-len("_MODULE")] in defined_symbols: continue - undefined[feature] = referenced_features.get(feature) - return undefined, defined_features + undefined[symbol] = referenced_symbols.get(symbol) + return undefined, defined_symbols def parse_source_files(source_files): """Parse each source file in @source_files and return dictionary with source files as keys and lists of references Kconfig symbols as values.""" - referenced_features = dict() + referenced_symbols = dict() for sfile in source_files: - referenced_features[sfile] = parse_source_file(sfile) - return referenced_features + referenced_symbols[sfile] = parse_source_file(sfile) + return referenced_symbols def parse_source_file(sfile): - """Parse @sfile and return a list of referenced Kconfig features.""" + """Parse @sfile and return a list of referenced Kconfig symbols.""" lines = [] references = [] if not os.path.exists(sfile): return references - with open(sfile, "r") as stream: + with open(sfile, "r", encoding='utf-8', errors='replace') as stream: lines = stream.readlines() for line in lines: - if not "CONFIG_" in line: + if "CONFIG_" not in line: continue - features = REGEX_SOURCE_FEATURE.findall(line) - for feature in features: - if not REGEX_FILTER_FEATURES.search(feature): + symbols = REGEX_SOURCE_SYMBOL.findall(line) + for symbol in symbols: + if not REGEX_FILTER_SYMBOLS.search(symbol): continue - references.append(feature) + references.append(symbol) return references -def get_features_in_line(line): - """Return mentioned Kconfig features in @line.""" - return REGEX_FEATURE.findall(line) +def get_symbols_in_line(line): + """Return mentioned Kconfig symbols in @line.""" + return REGEX_SYMBOL.findall(line) def parse_kconfig_files(args): @@ -404,21 +414,21 @@ def parse_kconfig_files(args): pattern.""" kconfig_files = args[0] ignore = args[1] - defined_features = [] - referenced_features = dict() + defined_symbols = [] + referenced_symbols = dict() for kfile in kconfig_files: defined, references = parse_kconfig_file(kfile) - defined_features.extend(defined) + defined_symbols.extend(defined) if ignore and re.match(ignore, kfile): # do not collect references for files that match the ignore pattern continue - referenced_features[kfile] = references - return (defined_features, referenced_features) + referenced_symbols[kfile] = references + return (defined_symbols, referenced_symbols) def parse_kconfig_file(kfile): - """Parse @kfile and update feature definitions and references.""" + """Parse @kfile and update symbol definitions and references.""" lines = [] defined = [] references = [] @@ -427,7 +437,7 @@ def parse_kconfig_file(kfile): if not os.path.exists(kfile): return defined, references - with open(kfile, "r") as stream: + with open(kfile, "r", encoding='utf-8', errors='replace') as stream: lines = stream.readlines() for i in range(len(lines)): @@ -436,8 +446,8 @@ def parse_kconfig_file(kfile): line = line.split("#")[0] # ignore comments if REGEX_KCONFIG_DEF.match(line): - feature_def = REGEX_KCONFIG_DEF.findall(line) - defined.append(feature_def[0]) + symbol_def = REGEX_KCONFIG_DEF.findall(line) + defined.append(symbol_def[0]) skip = False elif REGEX_KCONFIG_HELP.match(line): skip = True @@ -446,18 +456,18 @@ def parse_kconfig_file(kfile): pass elif REGEX_KCONFIG_STMT.match(line): line = REGEX_QUOTES.sub("", line) - features = get_features_in_line(line) + symbols = get_symbols_in_line(line) # multi-line statements while line.endswith("\\"): i += 1 line = lines[i] line = line.strip('\n') - features.extend(get_features_in_line(line)) - for feature in set(features): - if REGEX_NUMERIC.match(feature): + symbols.extend(get_symbols_in_line(line)) + for symbol in set(symbols): + if REGEX_NUMERIC.match(symbol): # ignore numeric values continue - references.append(feature) + references.append(symbol) return defined, references diff --git a/scripts/ver_linux b/scripts/ver_linux index 0d8bd29..430b201 100755 --- a/scripts/ver_linux +++ b/scripts/ver_linux @@ -1,193 +1,89 @@ -#!/bin/sh +#!/bin/awk -f # Before running this script please ensure that your PATH is # typical as you use for compilation/installation. I use # /bin /sbin /usr/bin /usr/sbin /usr/local/bin, but it may # differ on your system. -# -echo 'If some fields are empty or look unusual you may have an old version.' -echo 'Compare to the current minimal requirements in Documentation/Changes.' -echo ' ' -uname -a -echo ' ' - -gcc -dumpversion 2>&1 | -awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("GNU C\t\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -make --version 2>&1 | -awk '/GNU Make/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("GNU Make\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -ld -v 2>&1 | -awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Binutils\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -mount --version 2>&1 | -awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - $0 = substr($0,RSTART,RLENGTH) - printf("Util-linux\t\t%s\nMount\t\t\t%s\n",$0,$0) -}' - -depmod -V 2>&1 | -awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Module-init-tools\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -tune2fs 2>&1 | -awk '/^tune2fs/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("E2fsprogs\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -fsck.jfs -V 2>&1 | -awk '/version/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Jfsutils\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -reiserfsck -V 2>&1 | -awk '/^reiserfsck/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Reiserfsprogs\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -fsck.reiser4 -V 2>&1 | grep ^fsck.reiser4 | awk \ -'NR==1{print "reiser4progs ", $2}' - -xfs_db -V 2>&1 | -awk '/version/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Xfsprogs\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -pccardctl -V 2>&1 | -awk '/pcmciautils/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Pcmciautils\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -cardmgr -V 2>&1| grep version | awk \ -'NR==1{print "pcmcia-cs ", $3}' - -quota -V 2>&1 | -awk '/version/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Quota-tools\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -pppd --version 2>&1 | -awk '/version/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("PPP\t\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -isdnctrl 2>&1 | grep version | awk \ -'NR==1{print "isdn4k-utils ", $NF}' - -showmount --version 2>&1 | grep nfs-utils | awk \ -'NR==1{print "nfs-utils ", $NF}' - -test -r /proc/self/maps && -sed ' - /.*libc-\(.*\)\.so$/!d - s//Linux C Library\t\t\1/ - q -' /proc/self/maps - -ldd --version 2>&1 | -awk '/^ldd/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Dynamic linker (ldd)\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -libcpp=`ldconfig -p 2>/dev/null | - awk '/(libg|stdc)[+]+\.so/ { - print $NF - exit +BEGIN { + usage = "If some fields are empty or look unusual you may have an old version.\n" + usage = usage "Compare to the current minimal requirements in Documentation/Changes.\n" + print usage + + system("uname -a") + printf("\n") + + printversion("GNU C", version("gcc -dumpversion 2>&1")) + printversion("GNU Make", version("make --version 2>&1")) + printversion("Binutils", version("ld -v 2>&1")) + printversion("Util-linux", version("mount --version 2>&1")) + printversion("Mount", version("mount --version 2>&1")) + printversion("Module-init-tools", version("depmod -V 2>&1")) + printversion("E2fsprogs", version("tune2fs 2>&1")) + printversion("Jfsutils", version("fsck.jfs -V 2>&1")) + printversion("Reiserfsprogs", version("reiserfsck -V 2>&1")) + printversion("Reiser4fsprogs", version("fsck.reiser4 -V 2>&1")) + printversion("Xfsprogs", version("xfs_db -V 2>&1")) + printversion("Pcmciautils", version("pccardctl -V 2>&1")) + printversion("Pcmcia-cs", version("cardmgr -V 2>&1")) + printversion("Quota-tools", version("quota -V 2>&1")) + printversion("PPP", version("pppd --version 2>&1")) + printversion("Isdn4k-utils", version("isdnctrl 2>&1")) + printversion("Nfs-utils", version("showmount --version 2>&1")) + + if (system("test -r /proc/self/maps") == 0) { + while (getline <"/proc/self/maps" > 0) { + n = split($0, procmaps, "/") + if (/libc.*so$/ && match(procmaps[n], /[0-9]+([.]?[0-9]+)+/)) { + ver = substr(procmaps[n], RSTART, RLENGTH) + printversion("Linux C Library", ver) + break + } + } } -'` -test -r "$libcpp" && -ls -l $libcpp | -sed ' - s!.*so\.!! - s!^!Linux C++ Library\t! -' -ps --version 2>&1 | -awk '/version/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Procps\t\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -ifconfig --version 2>&1 | -awk '/tools/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Net-tools\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -loadkeys -V 2>&1 | -awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - $0 = substr($0,RSTART,RLENGTH) - printf("Kbd\t\t\t%s\nConsole-tools\t\t%s\n",$0,$0) -}' -oprofiled --version 2>&1 | awk \ -'(NR==1 && ($2 == "oprofile")) {print "oprofile ", $3}' + printversion("Dynamic linker (ldd)", version("ldd --version 2>&1")) -expr --v 2>&1 | -awk '/^expr/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Sh-utils\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' - -udevadm --version 2>&1 | -awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Udev\t\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' + while ("ldconfig -p 2>/dev/null" | getline > 0) { + if (/(libg|stdc)[+]+\.so/) { + libcpp = $NF + break + } + } + if (system("test -r " libcpp) == 0) + printversion("Linux C++ Library", version("readlink " libcpp)) + + printversion("Procps", version("ps --version 2>&1")) + printversion("Net-tools", version("ifconfig --version 2>&1")) + printversion("Kbd", version("loadkeys -V 2>&1")) + printversion("Console-tools", version("loadkeys -V 2>&1")) + printversion("Oprofile", version("oprofiled --version 2>&1")) + printversion("Sh-utils", version("expr --v 2>&1")) + printversion("Udev", version("udevadm --version 2>&1")) + printversion("Wireless-tools", version("iwconfig --version 2>&1")) + + if (system("test -r /proc/modules") == 0) { + while ("sort /proc/modules" | getline > 0) { + mods = mods sep $1 + sep = " " + } + printversion("Modules Loaded", mods) + } +} -iwconfig --version 2>&1 | -awk '/version/{ - match($0, /[0-9]+([.]?[0-9]+)+/) - printf("Wireless-tools\t\t%s\n", - substr($0,RSTART,RLENGTH)) -}' +function version(cmd, ver) { + while (cmd | getline > 0) { + if (!/ver_linux/ && match($0, /[0-9]+([.]?[0-9]+)+/)) { + ver = substr($0, RSTART, RLENGTH) + break + } + } + close(cmd) + return ver +} -test -e /proc/modules && -sort /proc/modules | -sed ' - s/ .*// - H -${ - g - s/^\n/Modules Loaded\t\t/ - y/\n/ / - q +function printversion(name, value, ofmt) { + if (value != "") { + ofmt = "%-20s\t%s\n" + printf(ofmt, name, value) + } } - d -' diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index 0d9f48e..bc7adb8 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -1433,7 +1433,7 @@ int main(int argc, char *argv[]) openlog("KVP", 0, LOG_USER); syslog(LOG_INFO, "KVP starting; pid is:%d", getpid()); - kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR); + kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR | O_CLOEXEC); if (kvp_fd < 0) { syslog(LOG_ERR, "open /dev/vmbus/hv_kvp failed; error: %d %s", diff --git a/tools/hv/hv_vss_daemon.c b/tools/hv/hv_vss_daemon.c index 5d51d6f..e082980 100644 --- a/tools/hv/hv_vss_daemon.c +++ b/tools/hv/hv_vss_daemon.c @@ -250,6 +250,9 @@ int main(int argc, char *argv[]) syslog(LOG_ERR, "/etc/fstab and /proc/mounts"); } break; + case VSS_OP_HOT_BACKUP: + syslog(LOG_INFO, "VSS: op=CHECK HOT BACKUP\n"); + break; default: syslog(LOG_ERR, "Illegal op:%d\n", op); } |
