diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries')
| -rw-r--r-- | arch/powerpc/platforms/pseries/eeh.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/eeh_driver.c | 16 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/firmware.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/hvconsole.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/pci.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/pci_dlpar.c | 11 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/ras.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/reconfig.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/rtasd.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 231 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/xics.c | 4 |
11 files changed, 133 insertions, 150 deletions
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index 2ab9dcd..9b2b1cb 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -1018,7 +1018,7 @@ static int __init eeh_init_proc(void) { struct proc_dir_entry *e; - if (platform_is_pseries()) { + if (machine_is(pseries)) { e = create_proc_entry("ppc64/eeh", 0, NULL); if (e) e->proc_fops = &proc_eeh_operations; diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c index b811d5f..cc2495a 100644 --- a/arch/powerpc/platforms/pseries/eeh_driver.c +++ b/arch/powerpc/platforms/pseries/eeh_driver.c @@ -257,6 +257,7 @@ void handle_eeh_events (struct eeh_event *event) struct pci_bus *frozen_bus; int rc = 0; enum pci_ers_result result = PCI_ERS_RESULT_NONE; + const char *pci_str, *drv_str; frozen_dn = find_device_pe(event->dn); frozen_bus = pcibios_find_pci_bus(frozen_dn); @@ -291,6 +292,13 @@ void handle_eeh_events (struct eeh_event *event) frozen_pdn = PCI_DN(frozen_dn); frozen_pdn->eeh_freeze_count++; + + pci_str = pci_name (frozen_pdn->pcidev); + drv_str = pcid_name (frozen_pdn->pcidev); + if (!pci_str) { + pci_str = pci_name (event->dev); + drv_str = pcid_name (event->dev); + } if (frozen_pdn->eeh_freeze_count > EEH_MAX_ALLOWED_FREEZES) goto hard_fail; @@ -306,9 +314,7 @@ void handle_eeh_events (struct eeh_event *event) eeh_slot_error_detail(frozen_pdn, 1 /* Temporary Error */); printk(KERN_WARNING "EEH: This PCI device has failed %d times since last reboot: %s - %s\n", - frozen_pdn->eeh_freeze_count, - pci_name (frozen_pdn->pcidev), - pcid_name(frozen_pdn->pcidev)); + frozen_pdn->eeh_freeze_count, drv_str, pci_str); /* Walk the various device drivers attached to this slot through * a reset sequence, giving each an opportunity to do what it needs @@ -360,9 +366,7 @@ hard_fail: "EEH: PCI device %s - %s has failed %d times \n" "and has been permanently disabled. Please try reseating\n" "this device or replacing it.\n", - pci_name (frozen_pdn->pcidev), - pcid_name(frozen_pdn->pcidev), - frozen_pdn->eeh_freeze_count); + drv_str, pci_str, frozen_pdn->eeh_freeze_count); eeh_slot_error_detail(frozen_pdn, 2 /* Permanent Error */); diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c index 989f4bc..c01d8f0 100644 --- a/arch/powerpc/platforms/pseries/firmware.c +++ b/arch/powerpc/platforms/pseries/firmware.c @@ -91,7 +91,7 @@ void __init fw_feature_init(void) continue; /* we have a match */ - ppc64_firmware_features |= + powerpc_firmware_features |= firmware_features_table[i].val; break; } diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c index 138e128..ba6befd 100644 --- a/arch/powerpc/platforms/pseries/hvconsole.c +++ b/arch/powerpc/platforms/pseries/hvconsole.c @@ -62,6 +62,11 @@ int hvc_put_chars(uint32_t vtermno, const char *buf, int count) unsigned long *lbuf = (unsigned long *) buf; long ret; + + /* hcall will ret H_PARAMETER if 'count' exceeds firmware max.*/ + if (count > MAX_VIO_PUT_CHARS) + count = MAX_VIO_PUT_CHARS; + ret = plpar_hcall_norets(H_PUT_TERM_CHAR, vtermno, count, lbuf[0], lbuf[1]); if (ret == H_Success) diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index 946ad59..e97e67f 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -120,7 +120,7 @@ static void fixup_winbond_82c105(struct pci_dev* dev) int i; unsigned int reg; - if (!platform_is_pseries()) + if (!machine_is(pseries)) return; printk("Using INTC for W82c105 IDE controller.\n"); diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c index 44abdeb..6bfacc2 100644 --- a/arch/powerpc/platforms/pseries/pci_dlpar.c +++ b/arch/powerpc/platforms/pseries/pci_dlpar.c @@ -28,6 +28,7 @@ #include <linux/pci.h> #include <asm/pci-bridge.h> #include <asm/ppc-pci.h> +#include <asm/firmware.h> static struct pci_bus * find_bus_among_children(struct pci_bus *bus, @@ -152,20 +153,24 @@ pcibios_pci_config_bridge(struct pci_dev *dev) void pcibios_add_pci_devices(struct pci_bus * bus) { - int slotno, num; + int slotno, num, mode; struct pci_dev *dev; struct device_node *dn = pci_bus_to_OF_node(bus); eeh_add_device_tree_early(dn); - if (_machine == PLATFORM_PSERIES_LPAR) { + mode = PCI_PROBE_NORMAL; + if (ppc_md.pci_probe_mode) + mode = ppc_md.pci_probe_mode(bus); + + if (mode == PCI_PROBE_DEVTREE) { /* use ofdt-based probe */ of_scan_bus(dn, bus); if (!list_empty(&bus->devices)) { pcibios_fixup_new_pci_devices(bus, 0); pci_bus_add_devices(bus); } - } else { + } else if (mode == PCI_PROBE_NORMAL) { /* use legacy probe */ slotno = PCI_SLOT(PCI_DN(dn->child)->devfn); num = pci_scan_slot(bus, PCI_DEVFN(slotno, 0)); diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index b046bcf..9639c66 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -132,7 +132,7 @@ static int __init init_ras_IRQ(void) of_node_put(np); } - return 1; + return 0; } __initcall(init_ras_IRQ); diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c index 5ad9067..1773103 100644 --- a/arch/powerpc/platforms/pseries/reconfig.c +++ b/arch/powerpc/platforms/pseries/reconfig.c @@ -17,8 +17,9 @@ #include <linux/proc_fs.h> #include <asm/prom.h> -#include <asm/pSeries_reconfig.h> +#include <asm/machdep.h> #include <asm/uaccess.h> +#include <asm/pSeries_reconfig.h> @@ -508,7 +509,7 @@ static int proc_ppc64_create_ofdt(void) { struct proc_dir_entry *ent; - if (!platform_is_pseries()) + if (!machine_is(pseries)) return 0; ent = create_proc_entry("ppc64/ofdt", S_IWUSR, NULL); diff --git a/arch/powerpc/platforms/pseries/rtasd.c b/arch/powerpc/platforms/pseries/rtasd.c index a6f628d..fcc4d56 100644 --- a/arch/powerpc/platforms/pseries/rtasd.c +++ b/arch/powerpc/platforms/pseries/rtasd.c @@ -27,6 +27,7 @@ #include <asm/prom.h> #include <asm/nvram.h> #include <asm/atomic.h> +#include <asm/machdep.h> #if 0 #define DEBUG(A...) printk(KERN_ERR A) @@ -481,7 +482,7 @@ static int __init rtas_init(void) { struct proc_dir_entry *entry; - if (!platform_is_pseries()) + if (!machine_is(pseries)) return 0; /* No RTAS */ diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 44d5c7f..b2fbf8b 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -81,8 +81,8 @@ extern void find_udbg_vterm(void); int fwnmi_active; /* TRUE if an FWNMI handler is present */ -static void pseries_shared_idle(void); -static void pseries_dedicated_idle(void); +static void pseries_shared_idle_sleep(void); +static void pseries_dedicated_idle_sleep(void); struct mpic *pSeries_mpic; @@ -236,14 +236,13 @@ static void __init pSeries_setup_arch(void) vpa_init(boot_cpuid); if (get_lppaca()->shared_proc) { printk(KERN_INFO "Using shared processor idle loop\n"); - ppc_md.idle_loop = pseries_shared_idle; + ppc_md.power_save = pseries_shared_idle_sleep; } else { printk(KERN_INFO "Using dedicated idle loop\n"); - ppc_md.idle_loop = pseries_dedicated_idle; + ppc_md.power_save = pseries_dedicated_idle_sleep; } } else { printk(KERN_INFO "Using default idle loop\n"); - ppc_md.idle_loop = default_idle; } if (firmware_has_feature(FW_FEATURE_LPAR)) @@ -373,156 +372,123 @@ static int pSeries_check_legacy_ioport(unsigned int baseport) /* * Called very early, MMU is off, device-tree isn't unflattened */ -extern struct machdep_calls pSeries_md; -static int __init pSeries_probe(int platform) +static int __init pSeries_probe_hypertas(unsigned long node, + const char *uname, int depth, + void *data) { - if (platform != PLATFORM_PSERIES && - platform != PLATFORM_PSERIES_LPAR) - return 0; - - /* if we have some ppc_md fixups for LPAR to do, do - * it here ... - */ + if (depth != 1 || + (strcmp(uname, "rtas") != 0 && strcmp(uname, "rtas@0") != 0)) + return 0; - if (platform == PLATFORM_PSERIES_LPAR) - ppc64_firmware_features |= FW_FEATURE_LPAR; + if (of_get_flat_dt_prop(node, "ibm,hypertas-functions", NULL) != NULL) + powerpc_firmware_features |= FW_FEATURE_LPAR; - return 1; + return 1; } -DECLARE_PER_CPU(unsigned long, smt_snooze_delay); - -static inline void dedicated_idle_sleep(unsigned int cpu) +static int __init pSeries_probe(void) { - struct lppaca *plppaca = &lppaca[cpu ^ 1]; + char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(), + "device_type", NULL); + if (dtype == NULL) + return 0; + if (strcmp(dtype, "chrp")) + return 0; - /* Only sleep if the other thread is not idle */ - if (!(plppaca->idle)) { - local_irq_disable(); + DBG("pSeries detected, looking for LPAR capability...\n"); - /* - * We are about to sleep the thread and so wont be polling any - * more. - */ - clear_thread_flag(TIF_POLLING_NRFLAG); - smp_mb__after_clear_bit(); - - /* - * SMT dynamic mode. Cede will result in this thread going - * dormant, if the partner thread is still doing work. Thread - * wakes up if partner goes idle, an interrupt is presented, or - * a prod occurs. Returning from the cede enables external - * interrupts. - */ - if (!need_resched()) - cede_processor(); - else - local_irq_enable(); - set_thread_flag(TIF_POLLING_NRFLAG); - } else { - /* - * Give the HV an opportunity at the processor, since we are - * not doing any work. - */ - poll_pending(); - } + /* Now try to figure out if we are running on LPAR */ + of_scan_flat_dt(pSeries_probe_hypertas, NULL); + + DBG("Machine is%s LPAR !\n", + (powerpc_firmware_features & FW_FEATURE_LPAR) ? "" : " not"); + + return 1; } -static void pseries_dedicated_idle(void) + +DECLARE_PER_CPU(unsigned long, smt_snooze_delay); + +static void pseries_dedicated_idle_sleep(void) { unsigned int cpu = smp_processor_id(); unsigned long start_snooze; unsigned long *smt_snooze_delay = &__get_cpu_var(smt_snooze_delay); - set_thread_flag(TIF_POLLING_NRFLAG); - - while (1) { - /* - * Indicate to the HV that we are idle. Now would be - * a good time to find other work to dispatch. - */ - get_lppaca()->idle = 1; - - if (!need_resched()) { - start_snooze = get_tb() + - *smt_snooze_delay * tb_ticks_per_usec; - - while (!need_resched() && !cpu_is_offline(cpu)) { - ppc64_runlatch_off(); - - /* - * Go into low thread priority and possibly - * low power mode. - */ - HMT_low(); - HMT_very_low(); - - if (*smt_snooze_delay != 0 && - get_tb() > start_snooze) { - HMT_medium(); - dedicated_idle_sleep(cpu); - } - - } - - HMT_medium(); - } - - get_lppaca()->idle = 0; - ppc64_runlatch_on(); - preempt_enable_no_resched(); - schedule(); - preempt_disable(); + /* + * Indicate to the HV that we are idle. Now would be + * a good time to find other work to dispatch. + */ + get_lppaca()->idle = 1; - if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) - cpu_die(); - } -} + /* + * We come in with interrupts disabled, and need_resched() + * has been checked recently. If we should poll for a little + * while, do so. + */ + if (*smt_snooze_delay) { + start_snooze = get_tb() + + *smt_snooze_delay * tb_ticks_per_usec; + local_irq_enable(); + set_thread_flag(TIF_POLLING_NRFLAG); -static void pseries_shared_idle(void) -{ - unsigned int cpu = smp_processor_id(); + while (get_tb() < start_snooze) { + if (need_resched() || cpu_is_offline(cpu)) + goto out; + ppc64_runlatch_off(); + HMT_low(); + HMT_very_low(); + } - while (1) { - /* - * Indicate to the HV that we are idle. Now would be - * a good time to find other work to dispatch. - */ - get_lppaca()->idle = 1; + HMT_medium(); + clear_thread_flag(TIF_POLLING_NRFLAG); + smp_mb(); + local_irq_disable(); + if (need_resched() || cpu_is_offline(cpu)) + goto out; + } - while (!need_resched() && !cpu_is_offline(cpu)) { - local_irq_disable(); - ppc64_runlatch_off(); + /* + * Cede if the other thread is not idle, so that it can + * go single-threaded. If the other thread is idle, + * we ask the hypervisor if it has pending work it + * wants to do and cede if it does. Otherwise we keep + * polling in order to reduce interrupt latency. + * + * Doing the cede when the other thread is active will + * result in this thread going dormant, meaning the other + * thread gets to run in single-threaded (ST) mode, which + * is slightly faster than SMT mode with this thread at + * very low priority. The cede enables interrupts, which + * doesn't matter here. + */ + if (!lppaca[cpu ^ 1].idle || poll_pending() == H_Pending) + cede_processor(); - /* - * Yield the processor to the hypervisor. We return if - * an external interrupt occurs (which are driven prior - * to returning here) or if a prod occurs from another - * processor. When returning here, external interrupts - * are enabled. - * - * Check need_resched() again with interrupts disabled - * to avoid a race. - */ - if (!need_resched()) - cede_processor(); - else - local_irq_enable(); - - HMT_medium(); - } +out: + HMT_medium(); + get_lppaca()->idle = 0; +} - get_lppaca()->idle = 0; - ppc64_runlatch_on(); +static void pseries_shared_idle_sleep(void) +{ + /* + * Indicate to the HV that we are idle. Now would be + * a good time to find other work to dispatch. + */ + get_lppaca()->idle = 1; - preempt_enable_no_resched(); - schedule(); - preempt_disable(); + /* + * Yield the processor to the hypervisor. We return if + * an external interrupt occurs (which are driven prior + * to returning here) or if a prod occurs from another + * processor. When returning here, external interrupts + * are enabled. + */ + cede_processor(); - if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) - cpu_die(); - } + get_lppaca()->idle = 0; } static int pSeries_pci_probe_mode(struct pci_bus *bus) @@ -553,7 +519,8 @@ static void pseries_kexec_cpu_down(int crash_shutdown, int secondary) } #endif -struct machdep_calls __initdata pSeries_md = { +define_machine(pseries) { + .name = "pSeries", .probe = pSeries_probe, .setup_arch = pSeries_setup_arch, .init_early = pSeries_init_early, diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c index eb86cdb..4864cb3 100644 --- a/arch/powerpc/platforms/pseries/xics.c +++ b/arch/powerpc/platforms/pseries/xics.c @@ -500,7 +500,7 @@ nextnode: np; np = of_find_node_by_type(np, "cpu")) { ireg = (uint *)get_property(np, "reg", &ilen); - if (ireg && ireg[0] == boot_cpuid_phys) { + if (ireg && ireg[0] == get_hard_smp_processor_id(boot_cpuid)) { ireg = (uint *)get_property(np, "ibm,ppc-interrupt-gserver#s", &ilen); i = ilen / sizeof(int); @@ -541,7 +541,7 @@ nextnode: ops = &pSeriesLP_ops; else { #ifdef CONFIG_SMP - for_each_cpu(i) { + for_each_possible_cpu(i) { int hard_id; /* FIXME: Do this dynamically! --RR */ |
