diff options
| -rw-r--r-- | arch/mips/Kconfig | 4 | ||||
| -rw-r--r-- | arch/mips/au1000/common/pci.c | 8 | ||||
| -rw-r--r-- | arch/mips/kernel/head.S | 3 | ||||
| -rw-r--r-- | arch/mips/kernel/time.c | 4 | ||||
| -rw-r--r-- | arch/mips/pci/ops-au1000.c | 53 | ||||
| -rw-r--r-- | arch/mips/pci/ops-mace.c | 7 | ||||
| -rw-r--r-- | arch/mips/pci/pci-ip32.c | 4 | ||||
| -rw-r--r-- | arch/mips/sgi-ip32/ip32-irq.c | 1 | ||||
| -rw-r--r-- | arch/mips/sgi-ip32/ip32-platform.c | 20 |
9 files changed, 57 insertions, 47 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index c6fc405a..291d368 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -992,8 +992,6 @@ config BOOT_ELF64 menu "CPU selection" -source "kernel/time/Kconfig" - choice prompt "CPU type" default CPU_R4X00 @@ -1768,6 +1766,8 @@ config NR_CPUS performance should round up your number of processors to the next power of two. +source "kernel/time/Kconfig" + # # Timer Interrupt Frequency Configuration # diff --git a/arch/mips/au1000/common/pci.c b/arch/mips/au1000/common/pci.c index 6fa70a3..ce77148 100644 --- a/arch/mips/au1000/common/pci.c +++ b/arch/mips/au1000/common/pci.c @@ -1,8 +1,8 @@ /* * BRIEF MODULE DESCRIPTION - * Alchemy/AMD Au1x00 pci support. + * Alchemy/AMD Au1x00 PCI support. * - * Copyright 2001,2002,2003 MontaVista Software Inc. + * Copyright 2001-2003, 2007 MontaVista Software Inc. * Author: MontaVista Software, Inc. * ppopov@mvista.com or source@mvista.com * @@ -66,6 +66,8 @@ static unsigned long virt_io_addr; static int __init au1x_pci_setup(void) { + extern void au1x_pci_cfg_init(void); + #if defined(CONFIG_SOC_AU1500) || defined(CONFIG_SOC_AU1550) virt_io_addr = (unsigned long)ioremap(Au1500_PCI_IO_START, Au1500_PCI_IO_END - Au1500_PCI_IO_START + 1); @@ -94,6 +96,8 @@ static int __init au1x_pci_setup(void) set_io_port_base(virt_io_addr); #endif + au1x_pci_cfg_init(); + register_pci_controller(&au1x_controller); return 0; } diff --git a/arch/mips/kernel/head.S b/arch/mips/kernel/head.S index 2367687..50be56c 100644 --- a/arch/mips/kernel/head.S +++ b/arch/mips/kernel/head.S @@ -136,7 +136,8 @@ EXPORT(_stext) * kernel load address. This is needed because this platform does * not have a ELF loader yet. */ - __INIT +FEXPORT(__kernel_entry) + j kernel_entry #endif __INIT_REFOK diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c index 1ecfbb7..2995be1 100644 --- a/arch/mips/kernel/time.c +++ b/arch/mips/kernel/time.c @@ -147,9 +147,9 @@ static __init int cpu_has_mfc0_count_bug(void) return 1; /* - * I don't have erratas for newer R4400 so be paranoid. + * we assume newer revisions are ok */ - return 1; + return 0; } return 0; diff --git a/arch/mips/pci/ops-au1000.c b/arch/mips/pci/ops-au1000.c index 6b29904..1314bd5 100644 --- a/arch/mips/pci/ops-au1000.c +++ b/arch/mips/pci/ops-au1000.c @@ -1,8 +1,8 @@ /* * BRIEF MODULE DESCRIPTION - * Alchemy/AMD Au1x00 pci support. + * Alchemy/AMD Au1x00 PCI support. * - * Copyright 2001,2002,2003 MontaVista Software Inc. + * Copyright 2001-2003, 2007 MontaVista Software Inc. * Author: MontaVista Software, Inc. * ppopov@mvista.com or source@mvista.com * @@ -69,10 +69,27 @@ void mod_wired_entry(int entry, unsigned long entrylo0, write_c0_pagemask(old_pagemask); } -struct vm_struct *pci_cfg_vm; +static struct vm_struct *pci_cfg_vm; static int pci_cfg_wired_entry; -static int first_cfg = 1; -unsigned long last_entryLo0, last_entryLo1; +static unsigned long last_entryLo0, last_entryLo1; + +/* + * We can't ioremap the entire pci config space because it's too large. + * Nor can we call ioremap dynamically because some device drivers use + * the PCI config routines from within interrupt handlers and that + * becomes a problem in get_vm_area(). We use one wired TLB to handle + * all config accesses for all busses. + */ +void __init au1x_pci_cfg_init(void) +{ + /* Reserve a wired entry for PCI config accesses */ + pci_cfg_vm = get_vm_area(0x2000, VM_IOREMAP); + if (!pci_cfg_vm) + panic(KERN_ERR "PCI unable to get vm area\n"); + pci_cfg_wired_entry = read_c0_wired(); + add_wired_entry(0, 0, (unsigned long)pci_cfg_vm->addr, PM_4K); + last_entryLo0 = last_entryLo1 = 0xffffffff; +} static int config_access(unsigned char access_type, struct pci_bus *bus, unsigned int dev_fn, unsigned char where, @@ -97,27 +114,6 @@ static int config_access(unsigned char access_type, struct pci_bus *bus, Au1500_PCI_STATCMD); au_sync_udelay(1); - /* - * We can't ioremap the entire pci config space because it's - * too large. Nor can we call ioremap dynamically because some - * device drivers use the pci config routines from within - * interrupt handlers and that becomes a problem in get_vm_area(). - * We use one wired tlb to handle all config accesses for all - * busses. To improve performance, if the current device - * is the same as the last device accessed, we don't touch the - * tlb. - */ - if (first_cfg) { - /* reserve a wired entry for pci config accesses */ - first_cfg = 0; - pci_cfg_vm = get_vm_area(0x2000, VM_IOREMAP); - if (!pci_cfg_vm) - panic(KERN_ERR "PCI unable to get vm area\n"); - pci_cfg_wired_entry = read_c0_wired(); - add_wired_entry(0, 0, (unsigned long)pci_cfg_vm->addr, PM_4K); - last_entryLo0 = last_entryLo1 = 0xffffffff; - } - /* Allow board vendors to implement their own off-chip idsel. * If it doesn't succeed, may as well bail out at this point. */ @@ -144,9 +140,12 @@ static int config_access(unsigned char access_type, struct pci_bus *bus, /* page boundary */ cfg_base = cfg_base & PAGE_MASK; + /* + * To improve performance, if the current device is the same as + * the last device accessed, we don't touch the TLB. + */ entryLo0 = (6 << 26) | (cfg_base >> 6) | (2 << 3) | 7; entryLo1 = (6 << 26) | (cfg_base >> 6) | (0x1000 >> 6) | (2 << 3) | 7; - if ((entryLo0 != last_entryLo0) || (entryLo1 != last_entryLo1)) { mod_wired_entry(pci_cfg_wired_entry, entryLo0, entryLo1, (unsigned long)pci_cfg_vm->addr, PM_4K); diff --git a/arch/mips/pci/ops-mace.c b/arch/mips/pci/ops-mace.c index fe54514..e958818 100644 --- a/arch/mips/pci/ops-mace.c +++ b/arch/mips/pci/ops-mace.c @@ -42,6 +42,10 @@ static int mace_pci_read_config(struct pci_bus *bus, unsigned int devfn, int reg, int size, u32 *val) { + u32 control = mace->pci.control; + + /* disable master aborts interrupts during config read */ + mace->pci.control = control & ~MACEPCI_CONTROL_MAR_INT; mace->pci.config_addr = mkaddr(bus, devfn, reg); switch (size) { case 1: @@ -54,6 +58,9 @@ mace_pci_read_config(struct pci_bus *bus, unsigned int devfn, *val = mace->pci.config_data.l; break; } + /* ack possible master abort */ + mace->pci.error &= ~MACEPCI_ERROR_MASTER_ABORT; + mace->pci.control = control; DPRINTK("read%d: reg=%08x,val=%02x\n", size * 8, reg, *val); diff --git a/arch/mips/pci/pci-ip32.c b/arch/mips/pci/pci-ip32.c index 618ea7d..532b561 100644 --- a/arch/mips/pci/pci-ip32.c +++ b/arch/mips/pci/pci-ip32.c @@ -119,6 +119,7 @@ static struct pci_controller mace_pci_controller = { .iommu = 0, .mem_offset = MACE_PCI_MEM_OFFSET, .io_offset = 0, + .io_map_base = CKSEG1ADDR(MACEPCI_LOW_IO), }; static int __init mace_init(void) @@ -135,7 +136,8 @@ static int __init mace_init(void) BUG_ON(request_irq(MACE_PCI_BRIDGE_IRQ, macepci_error, 0, "MACE PCI error", NULL)); - iomem_resource = mace_pci_mem_resource; + /* extend memory resources */ + iomem_resource.end = mace_pci_mem_resource.end; ioport_resource = mace_pci_io_resource; register_pci_controller(&mace_pci_controller); diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c index cab7cc2..b0ea0e4 100644 --- a/arch/mips/sgi-ip32/ip32-irq.c +++ b/arch/mips/sgi-ip32/ip32-irq.c @@ -426,7 +426,6 @@ static void ip32_irq0(void) crime_int = crime->istat & crime_mask; irq = MACE_VID_IN1_IRQ + __ffs(crime_int); - crime_int = 1 << irq; if (crime_int & CRIME_MACEISA_INT_MASK) { unsigned long mace_int = mace->perif.ctrl.istat; diff --git a/arch/mips/sgi-ip32/ip32-platform.c b/arch/mips/sgi-ip32/ip32-platform.c index 77febd6..89a71f4 100644 --- a/arch/mips/sgi-ip32/ip32-platform.c +++ b/arch/mips/sgi-ip32/ip32-platform.c @@ -13,21 +13,22 @@ #include <asm/ip32/mace.h> #include <asm/ip32/ip32_ints.h> -/* - * .iobase isn't a constant (in the sense of C) so we fill it in at runtime. - */ -#define MACE_PORT(int) \ +#define MACEISA_SERIAL1_OFFS offsetof(struct sgi_mace, isa.serial1) +#define MACEISA_SERIAL2_OFFS offsetof(struct sgi_mace, isa.serial2) + +#define MACE_PORT(offset,_irq) \ { \ - .irq = int, \ + .mapbase = MACE_BASE + offset, \ + .irq = _irq, \ .uartclk = 1843200, \ .iotype = UPIO_MEM, \ - .flags = UPF_SKIP_TEST, \ + .flags = UPF_SKIP_TEST|UPF_IOREMAP, \ .regshift = 8, \ } static struct plat_serial8250_port uart8250_data[] = { - MACE_PORT(MACEISA_SERIAL1_IRQ), - MACE_PORT(MACEISA_SERIAL2_IRQ), + MACE_PORT(MACEISA_SERIAL1_OFFS, MACEISA_SERIAL1_IRQ), + MACE_PORT(MACEISA_SERIAL2_OFFS, MACEISA_SERIAL2_IRQ), { }, }; @@ -41,9 +42,6 @@ static struct platform_device uart8250_device = { static int __init uart8250_init(void) { - uart8250_data[0].membase = (void __iomem *) &mace->isa.serial1; - uart8250_data[1].membase = (void __iomem *) &mace->isa.serial2; - return platform_device_register(&uart8250_device); } |
