diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries')
| -rw-r--r-- | arch/powerpc/platforms/pseries/eeh_pseries.c | 8 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/ibmebus.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/mobility.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/ras.c | 62 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/rtas-fadump.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 22 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/vio.c | 7 |
7 files changed, 78 insertions, 29 deletions
diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c index 845342814edc..ace117f99d94 100644 --- a/arch/powerpc/platforms/pseries/eeh_pseries.c +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c @@ -664,6 +664,8 @@ static int pseries_eeh_configure_bridge(struct eeh_pe *pe) if (!ret) return ret; + if (ret < 0) + break; /* * If RTAS returns a delay value that's above 100ms, cut it @@ -684,7 +686,11 @@ static int pseries_eeh_configure_bridge(struct eeh_pe *pe) pr_warn("%s: Unable to configure bridge PHB#%x-PE#%x (%d)\n", __func__, pe->phb->global_number, pe->addr, ret); - return ret; + /* PAPR defines -3 as "Parameter Error" for this function: */ + if (ret == -3) + return -EINVAL; + else + return -EIO; } /** diff --git a/arch/powerpc/platforms/pseries/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c index b91eb0929ed1..a6f101c958e8 100644 --- a/arch/powerpc/platforms/pseries/ibmebus.c +++ b/arch/powerpc/platforms/pseries/ibmebus.c @@ -47,6 +47,7 @@ #include <linux/stat.h> #include <linux/of_platform.h> #include <asm/ibmebus.h> +#include <asm/machdep.h> static struct device ibmebus_bus_device = { /* fake "parent" device */ .init_name = "ibmebus", @@ -464,4 +465,4 @@ static int __init ibmebus_bus_init(void) return 0; } -postcore_initcall(ibmebus_bus_init); +machine_postcore_initcall(pseries, ibmebus_bus_init); diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c index b571285f6c14..10d982997736 100644 --- a/arch/powerpc/platforms/pseries/mobility.c +++ b/arch/powerpc/platforms/pseries/mobility.c @@ -371,6 +371,9 @@ void post_mobility_fixup(void) /* Possibly switch to a new RFI flush type */ pseries_setup_rfi_flush(); + /* Reinitialise system information for hv-24x7 */ + read_24x7_sys_info(); + return; } diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index 1d1da639b8b7..f3736fcd98fc 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -395,16 +395,31 @@ static irqreturn_t ras_error_interrupt(int irq, void *dev_id) /* * Some versions of FWNMI place the buffer inside the 4kB page starting at * 0x7000. Other versions place it inside the rtas buffer. We check both. + * Minimum size of the buffer is 16 bytes. */ #define VALID_FWNMI_BUFFER(A) \ - ((((A) >= 0x7000) && ((A) < 0x7ff0)) || \ - (((A) >= rtas.base) && ((A) < (rtas.base + rtas.size - 16)))) + ((((A) >= 0x7000) && ((A) <= 0x8000 - 16)) || \ + (((A) >= rtas.base) && ((A) <= (rtas.base + rtas.size - 16)))) static inline struct rtas_error_log *fwnmi_get_errlog(void) { return (struct rtas_error_log *)local_paca->mce_data_buf; } +static __be64 *fwnmi_get_savep(struct pt_regs *regs) +{ + unsigned long savep_ra; + + /* Mask top two bits */ + savep_ra = regs->gpr[3] & ~(0x3UL << 62); + if (!VALID_FWNMI_BUFFER(savep_ra)) { + printk(KERN_ERR "FWNMI: corrupt r3 0x%016lx\n", regs->gpr[3]); + return NULL; + } + + return __va(savep_ra); +} + /* * Get the error information for errors coming through the * FWNMI vectors. The pt_regs' r3 will be updated to reflect @@ -422,19 +437,14 @@ static inline struct rtas_error_log *fwnmi_get_errlog(void) */ static struct rtas_error_log *fwnmi_get_errinfo(struct pt_regs *regs) { - unsigned long *savep; struct rtas_error_log *h; + __be64 *savep; - /* Mask top two bits */ - regs->gpr[3] &= ~(0x3UL << 62); - - if (!VALID_FWNMI_BUFFER(regs->gpr[3])) { - printk(KERN_ERR "FWNMI: corrupt r3 0x%016lx\n", regs->gpr[3]); + savep = fwnmi_get_savep(regs); + if (!savep) return NULL; - } - savep = __va(regs->gpr[3]); - regs->gpr[3] = be64_to_cpu(savep[0]); /* restore original r3 */ + regs->gpr[3] = be64_to_cpu(savep[0]); /* restore original r3 */ h = (struct rtas_error_log *)&savep[1]; /* Use the per cpu buffer from paca to store rtas error log */ @@ -458,7 +468,15 @@ static struct rtas_error_log *fwnmi_get_errinfo(struct pt_regs *regs) */ static void fwnmi_release_errinfo(void) { - int ret = rtas_call(rtas_token("ibm,nmi-interlock"), 0, 1, NULL); + struct rtas_args rtas_args; + int ret; + + /* + * On pseries, the machine check stack is limited to under 4GB, so + * args can be on-stack. + */ + rtas_call_unlocked(&rtas_args, ibm_nmi_interlock_token, 0, 1, NULL); + ret = be32_to_cpu(rtas_args.rets[0]); if (ret != 0) printk(KERN_ERR "FWNMI: nmi-interlock failed: %d\n", ret); } @@ -481,11 +499,21 @@ int pSeries_system_reset_exception(struct pt_regs *regs) #endif if (fwnmi_active) { - struct rtas_error_log *errhdr = fwnmi_get_errinfo(regs); - if (errhdr) { - /* XXX Should look at FWNMI information */ - } - fwnmi_release_errinfo(); + __be64 *savep; + + /* + * Firmware (PowerVM and KVM) saves r3 to a save area like + * machine check, which is not exactly what PAPR (2.9) + * suggests but there is no way to detect otherwise, so this + * is the interface now. + * + * System resets do not save any error log or require an + * "ibm,nmi-interlock" rtas call to release. + */ + + savep = fwnmi_get_savep(regs); + if (savep) + regs->gpr[3] = be64_to_cpu(savep[0]); /* restore original r3 */ } if (smp_handle_nmi_ipi(regs)) diff --git a/arch/powerpc/platforms/pseries/rtas-fadump.c b/arch/powerpc/platforms/pseries/rtas-fadump.c index 70c3013fdd07..81343908ed33 100644 --- a/arch/powerpc/platforms/pseries/rtas-fadump.c +++ b/arch/powerpc/platforms/pseries/rtas-fadump.c @@ -506,7 +506,7 @@ void __init rtas_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) fadump_conf->fadump_supported = 1; /* Firmware supports 64-bit value for size, align it to pagesize. */ - fadump_conf->max_copy_size = _ALIGN_DOWN(U64_MAX, PAGE_SIZE); + fadump_conf->max_copy_size = ALIGN_DOWN(U64_MAX, PAGE_SIZE); /* * The 'ibm,kernel-dump' rtas node is present only if there is diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 0c8421dd01ab..64d18f4bf093 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -68,6 +68,7 @@ #include <asm/isa-bridge.h> #include <asm/security_features.h> #include <asm/asm-const.h> +#include <asm/idle.h> #include <asm/swiotlb.h> #include <asm/svm.h> @@ -83,6 +84,7 @@ unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT_4K); EXPORT_SYMBOL(CMO_PageSize); int fwnmi_active; /* TRUE if an FWNMI handler is present */ +int ibm_nmi_interlock_token; static void pSeries_show_cpuinfo(struct seq_file *m) { @@ -113,9 +115,14 @@ static void __init fwnmi_init(void) struct slb_entry *slb_ptr; size_t size; #endif + int ibm_nmi_register_token; - int ibm_nmi_register = rtas_token("ibm,nmi-register"); - if (ibm_nmi_register == RTAS_UNKNOWN_SERVICE) + ibm_nmi_register_token = rtas_token("ibm,nmi-register"); + if (ibm_nmi_register_token == RTAS_UNKNOWN_SERVICE) + return; + + ibm_nmi_interlock_token = rtas_token("ibm,nmi-interlock"); + if (WARN_ON(ibm_nmi_interlock_token == RTAS_UNKNOWN_SERVICE)) return; /* If the kernel's not linked at zero we point the firmware at low @@ -123,8 +130,8 @@ static void __init fwnmi_init(void) system_reset_addr = __pa(system_reset_fwnmi) - PHYSICAL_START; machine_check_addr = __pa(machine_check_fwnmi) - PHYSICAL_START; - if (0 == rtas_call(ibm_nmi_register, 2, 1, NULL, system_reset_addr, - machine_check_addr)) + if (0 == rtas_call(ibm_nmi_register_token, 2, 1, NULL, + system_reset_addr, machine_check_addr)) fwnmi_active = 1; /* @@ -317,6 +324,9 @@ static int alloc_dispatch_log_kmem_cache(void) } machine_early_initcall(pseries, alloc_dispatch_log_kmem_cache); +DEFINE_PER_CPU(u64, idle_spurr_cycles); +DEFINE_PER_CPU(u64, idle_entry_purr_snap); +DEFINE_PER_CPU(u64, idle_entry_spurr_snap); static void pseries_lpar_idle(void) { /* @@ -328,7 +338,7 @@ static void pseries_lpar_idle(void) return; /* Indicate to hypervisor that we are idle. */ - get_lppaca()->idle = 1; + pseries_idle_prolog(); /* * Yield the processor to the hypervisor. We return if @@ -339,7 +349,7 @@ static void pseries_lpar_idle(void) */ cede_processor(); - get_lppaca()->idle = 0; + pseries_idle_epilog(); } /* diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c index 37f1f25ba804..0487b26f6f1a 100644 --- a/arch/powerpc/platforms/pseries/vio.c +++ b/arch/powerpc/platforms/pseries/vio.c @@ -31,6 +31,7 @@ #include <asm/tce.h> #include <asm/page.h> #include <asm/hvcall.h> +#include <asm/machdep.h> static struct vio_dev vio_bus_device = { /* fake "parent" device */ .name = "vio", @@ -1513,7 +1514,7 @@ static int __init vio_bus_init(void) return 0; } -postcore_initcall(vio_bus_init); +machine_postcore_initcall(pseries, vio_bus_init); static int __init vio_device_init(void) { @@ -1522,7 +1523,7 @@ static int __init vio_device_init(void) return 0; } -device_initcall(vio_device_init); +machine_device_initcall(pseries, vio_device_init); static ssize_t name_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -1703,4 +1704,4 @@ static int __init vio_init(void) dma_debug_add_bus(&vio_bus_type); return 0; } -fs_initcall(vio_init); +machine_fs_initcall(pseries, vio_init); |