diff options
Diffstat (limited to 'arch/ia64/kernel/mca_drv.c')
| -rw-r--r-- | arch/ia64/kernel/mca_drv.c | 796 |
1 files changed, 0 insertions, 796 deletions
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c deleted file mode 100644 index 23c203639a96..000000000000 --- a/arch/ia64/kernel/mca_drv.c +++ /dev/null @@ -1,796 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * File: mca_drv.c - * Purpose: Generic MCA handling layer - * - * Copyright (C) 2004 FUJITSU LIMITED - * Copyright (C) 2004 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> - * Copyright (C) 2005 Silicon Graphics, Inc - * Copyright (C) 2005 Keith Owens <kaos@sgi.com> - * Copyright (C) 2006 Russ Anderson <rja@sgi.com> - */ -#include <linux/types.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/kallsyms.h> -#include <linux/memblock.h> -#include <linux/acpi.h> -#include <linux/timer.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/smp.h> -#include <linux/workqueue.h> -#include <linux/mm.h> -#include <linux/slab.h> - -#include <asm/delay.h> -#include <asm/page.h> -#include <asm/ptrace.h> -#include <asm/sal.h> -#include <asm/mca.h> - -#include <asm/irq.h> -#include <asm/hw_irq.h> - -#include "mca_drv.h" - -/* max size of SAL error record (default) */ -static int sal_rec_max = 10000; - -/* from mca_drv_asm.S */ -extern void *mca_handler_bhhook(void); - -static DEFINE_SPINLOCK(mca_bh_lock); - -typedef enum { - MCA_IS_LOCAL = 0, - MCA_IS_GLOBAL = 1 -} mca_type_t; - -#define MAX_PAGE_ISOLATE 1024 - -static struct page *page_isolate[MAX_PAGE_ISOLATE]; -static int num_page_isolate = 0; - -typedef enum { - ISOLATE_NG, - ISOLATE_OK, - ISOLATE_NONE -} isolate_status_t; - -typedef enum { - MCA_NOT_RECOVERED = 0, - MCA_RECOVERED = 1 -} recovery_status_t; - -/* - * This pool keeps pointers to the section part of SAL error record - */ -static struct { - slidx_list_t *buffer; /* section pointer list pool */ - int cur_idx; /* Current index of section pointer list pool */ - int max_idx; /* Maximum index of section pointer list pool */ -} slidx_pool; - -static int -fatal_mca(const char *fmt, ...) -{ - va_list args; - char buf[256]; - - va_start(args, fmt); - vsnprintf(buf, sizeof(buf), fmt, args); - va_end(args); - ia64_mca_printk(KERN_ALERT "MCA: %s\n", buf); - - return MCA_NOT_RECOVERED; -} - -static int -mca_recovered(const char *fmt, ...) -{ - va_list args; - char buf[256]; - - va_start(args, fmt); - vsnprintf(buf, sizeof(buf), fmt, args); - va_end(args); - ia64_mca_printk(KERN_INFO "MCA: %s\n", buf); - - return MCA_RECOVERED; -} - -/** - * mca_page_isolate - isolate a poisoned page in order not to use it later - * @paddr: poisoned memory location - * - * Return value: - * one of isolate_status_t, ISOLATE_OK/NG/NONE. - */ - -static isolate_status_t -mca_page_isolate(unsigned long paddr) -{ - int i; - struct page *p; - - /* whether physical address is valid or not */ - if (!ia64_phys_addr_valid(paddr)) - return ISOLATE_NONE; - - if (!pfn_valid(paddr >> PAGE_SHIFT)) - return ISOLATE_NONE; - - /* convert physical address to physical page number */ - p = pfn_to_page(paddr>>PAGE_SHIFT); - - /* check whether a page number have been already registered or not */ - for (i = 0; i < num_page_isolate; i++) - if (page_isolate[i] == p) - return ISOLATE_OK; /* already listed */ - - /* limitation check */ - if (num_page_isolate == MAX_PAGE_ISOLATE) - return ISOLATE_NG; - - /* kick pages having attribute 'SLAB' or 'Reserved' */ - if (PageSlab(p) || PageReserved(p)) - return ISOLATE_NG; - - /* add attribute 'Reserved' and register the page */ - get_page(p); - SetPageReserved(p); - page_isolate[num_page_isolate++] = p; - - return ISOLATE_OK; -} - -/** - * mca_hanlder_bh - Kill the process which occurred memory read error - * @paddr: poisoned address received from MCA Handler - */ - -void -mca_handler_bh(unsigned long paddr, void *iip, unsigned long ipsr) -{ - ia64_mlogbuf_dump(); - printk(KERN_ERR "OS_MCA: process [cpu %d, pid: %d, uid: %d, " - "iip: %p, psr: 0x%lx,paddr: 0x%lx](%s) encounters MCA.\n", - raw_smp_processor_id(), current->pid, - from_kuid(&init_user_ns, current_uid()), - iip, ipsr, paddr, current->comm); - - spin_lock(&mca_bh_lock); - switch (mca_page_isolate(paddr)) { - case ISOLATE_OK: - printk(KERN_DEBUG "Page isolation: ( %lx ) success.\n", paddr); - break; - case ISOLATE_NG: - printk(KERN_CRIT "Page isolation: ( %lx ) failure.\n", paddr); - break; - default: - break; - } - spin_unlock(&mca_bh_lock); - - /* This process is about to be killed itself */ - make_task_dead(SIGKILL); -} - -/** - * mca_make_peidx - Make index of processor error section - * @slpi: pointer to record of processor error section - * @peidx: pointer to index of processor error section - */ - -static void -mca_make_peidx(sal_log_processor_info_t *slpi, peidx_table_t *peidx) -{ - /* - * calculate the start address of - * "struct cpuid_info" and "sal_processor_static_info_t". - */ - u64 total_check_num = slpi->valid.num_cache_check - + slpi->valid.num_tlb_check - + slpi->valid.num_bus_check - + slpi->valid.num_reg_file_check - + slpi->valid.num_ms_check; - u64 head_size = sizeof(sal_log_mod_error_info_t) * total_check_num - + sizeof(sal_log_processor_info_t); - u64 mid_size = slpi->valid.cpuid_info * sizeof(struct sal_cpuid_info); - - peidx_head(peidx) = slpi; - peidx_mid(peidx) = (struct sal_cpuid_info *) - (slpi->valid.cpuid_info ? ((char*)slpi + head_size) : NULL); - peidx_bottom(peidx) = (sal_processor_static_info_t *) - (slpi->valid.psi_static_struct ? - ((char*)slpi + head_size + mid_size) : NULL); -} - -/** - * mca_make_slidx - Make index of SAL error record - * @buffer: pointer to SAL error record - * @slidx: pointer to index of SAL error record - * - * Return value: - * 1 if record has platform error / 0 if not - */ -#define LOG_INDEX_ADD_SECT_PTR(sect, ptr) \ - {slidx_list_t *hl = &slidx_pool.buffer[slidx_pool.cur_idx]; \ - hl->hdr = ptr; \ - list_add(&hl->list, &(sect)); \ - slidx_pool.cur_idx = (slidx_pool.cur_idx + 1)%slidx_pool.max_idx; } - -static int -mca_make_slidx(void *buffer, slidx_table_t *slidx) -{ - int platform_err = 0; - int record_len = ((sal_log_record_header_t*)buffer)->len; - u32 ercd_pos; - int sects; - sal_log_section_hdr_t *sp; - - /* - * Initialize index referring current record - */ - INIT_LIST_HEAD(&(slidx->proc_err)); - INIT_LIST_HEAD(&(slidx->mem_dev_err)); - INIT_LIST_HEAD(&(slidx->sel_dev_err)); - INIT_LIST_HEAD(&(slidx->pci_bus_err)); - INIT_LIST_HEAD(&(slidx->smbios_dev_err)); - INIT_LIST_HEAD(&(slidx->pci_comp_err)); - INIT_LIST_HEAD(&(slidx->plat_specific_err)); - INIT_LIST_HEAD(&(slidx->host_ctlr_err)); - INIT_LIST_HEAD(&(slidx->plat_bus_err)); - INIT_LIST_HEAD(&(slidx->unsupported)); - - /* - * Extract a Record Header - */ - slidx->header = buffer; - - /* - * Extract each section records - * (arranged from "int ia64_log_platform_info_print()") - */ - for (ercd_pos = sizeof(sal_log_record_header_t), sects = 0; - ercd_pos < record_len; ercd_pos += sp->len, sects++) { - sp = (sal_log_section_hdr_t *)((char*)buffer + ercd_pos); - if (!efi_guidcmp(sp->guid, SAL_PROC_DEV_ERR_SECT_GUID)) { - LOG_INDEX_ADD_SECT_PTR(slidx->proc_err, sp); - } else if (!efi_guidcmp(sp->guid, - SAL_PLAT_MEM_DEV_ERR_SECT_GUID)) { - platform_err = 1; - LOG_INDEX_ADD_SECT_PTR(slidx->mem_dev_err, sp); - } else if (!efi_guidcmp(sp->guid, - SAL_PLAT_SEL_DEV_ERR_SECT_GUID)) { - platform_err = 1; - LOG_INDEX_ADD_SECT_PTR(slidx->sel_dev_err, sp); - } else if (!efi_guidcmp(sp->guid, - SAL_PLAT_PCI_BUS_ERR_SECT_GUID)) { - platform_err = 1; - LOG_INDEX_ADD_SECT_PTR(slidx->pci_bus_err, sp); - } else if (!efi_guidcmp(sp->guid, - SAL_PLAT_SMBIOS_DEV_ERR_SECT_GUID)) { - platform_err = 1; - LOG_INDEX_ADD_SECT_PTR(slidx->smbios_dev_err, sp); - } else if (!efi_guidcmp(sp->guid, - SAL_PLAT_PCI_COMP_ERR_SECT_GUID)) { - platform_err = 1; - LOG_INDEX_ADD_SECT_PTR(slidx->pci_comp_err, sp); - } else if (!efi_guidcmp(sp->guid, - SAL_PLAT_SPECIFIC_ERR_SECT_GUID)) { - platform_err = 1; - LOG_INDEX_ADD_SECT_PTR(slidx->plat_specific_err, sp); - } else if (!efi_guidcmp(sp->guid, - SAL_PLAT_HOST_CTLR_ERR_SECT_GUID)) { - platform_err = 1; - LOG_INDEX_ADD_SECT_PTR(slidx->host_ctlr_err, sp); - } else if (!efi_guidcmp(sp->guid, - SAL_PLAT_BUS_ERR_SECT_GUID)) { - platform_err = 1; - LOG_INDEX_ADD_SECT_PTR(slidx->plat_bus_err, sp); - } else { - LOG_INDEX_ADD_SECT_PTR(slidx->unsupported, sp); - } - } - slidx->n_sections = sects; - - return platform_err; -} - -/** - * init_record_index_pools - Initialize pool of lists for SAL record index - * - * Return value: - * 0 on Success / -ENOMEM on Failure - */ -static int -init_record_index_pools(void) -{ - int i; - int rec_max_size; /* Maximum size of SAL error records */ - int sect_min_size; /* Minimum size of SAL error sections */ - /* minimum size table of each section */ - static int sal_log_sect_min_sizes[] = { - sizeof(sal_log_processor_info_t) - + sizeof(sal_processor_static_info_t), - sizeof(sal_log_mem_dev_err_info_t), - sizeof(sal_log_sel_dev_err_info_t), - sizeof(sal_log_pci_bus_err_info_t), - sizeof(sal_log_smbios_dev_err_info_t), - sizeof(sal_log_pci_comp_err_info_t), - sizeof(sal_log_plat_specific_err_info_t), - sizeof(sal_log_host_ctlr_err_info_t), - sizeof(sal_log_plat_bus_err_info_t), - }; - - /* - * MCA handler cannot allocate new memory on flight, - * so we preallocate enough memory to handle a SAL record. - * - * Initialize a handling set of slidx_pool: - * 1. Pick up the max size of SAL error records - * 2. Pick up the min size of SAL error sections - * 3. Allocate the pool as enough to 2 SAL records - * (now we can estimate the maxinum of section in a record.) - */ - - /* - 1 - */ - rec_max_size = sal_rec_max; - - /* - 2 - */ - sect_min_size = sal_log_sect_min_sizes[0]; - for (i = 1; i < ARRAY_SIZE(sal_log_sect_min_sizes); i++) - if (sect_min_size > sal_log_sect_min_sizes[i]) - sect_min_size = sal_log_sect_min_sizes[i]; - - /* - 3 - */ - slidx_pool.max_idx = (rec_max_size/sect_min_size) * 2 + 1; - slidx_pool.buffer = - kmalloc_array(slidx_pool.max_idx, sizeof(slidx_list_t), - GFP_KERNEL); - - return slidx_pool.buffer ? 0 : -ENOMEM; -} - - -/***************************************************************************** - * Recovery functions * - *****************************************************************************/ - -/** - * is_mca_global - Check whether this MCA is global or not - * @peidx: pointer of index of processor error section - * @pbci: pointer to pal_bus_check_info_t - * @sos: pointer to hand off struct between SAL and OS - * - * Return value: - * MCA_IS_LOCAL / MCA_IS_GLOBAL - */ - -static mca_type_t -is_mca_global(peidx_table_t *peidx, pal_bus_check_info_t *pbci, - struct ia64_sal_os_state *sos) -{ - pal_processor_state_info_t *psp = - (pal_processor_state_info_t*)peidx_psp(peidx); - - /* - * PAL can request a rendezvous, if the MCA has a global scope. - * If "rz_always" flag is set, SAL requests MCA rendezvous - * in spite of global MCA. - * Therefore it is local MCA when rendezvous has not been requested. - * Failed to rendezvous, the system must be down. - */ - switch (sos->rv_rc) { - case -1: /* SAL rendezvous unsuccessful */ - return MCA_IS_GLOBAL; - case 0: /* SAL rendezvous not required */ - return MCA_IS_LOCAL; - case 1: /* SAL rendezvous successful int */ - case 2: /* SAL rendezvous successful int with init */ - default: - break; - } - - /* - * If One or more Cache/TLB/Reg_File/Uarch_Check is here, - * it would be a local MCA. (i.e. processor internal error) - */ - if (psp->tc || psp->cc || psp->rc || psp->uc) - return MCA_IS_LOCAL; - - /* - * Bus_Check structure with Bus_Check.ib (internal bus error) flag set - * would be a global MCA. (e.g. a system bus address parity error) - */ - if (!pbci || pbci->ib) - return MCA_IS_GLOBAL; - - /* - * Bus_Check structure with Bus_Check.eb (external bus error) flag set - * could be either a local MCA or a global MCA. - * - * Referring Bus_Check.bsi: - * 0: Unknown/unclassified - * 1: BERR# - * 2: BINIT# - * 3: Hard Fail - * (FIXME: Are these SGI specific or generic bsi values?) - */ - if (pbci->eb) - switch (pbci->bsi) { - case 0: - /* e.g. a load from poisoned memory */ - return MCA_IS_LOCAL; - case 1: - case 2: - case 3: - return MCA_IS_GLOBAL; - } - - return MCA_IS_GLOBAL; -} - -/** - * get_target_identifier - Get the valid Cache or Bus check target identifier. - * @peidx: pointer of index of processor error section - * - * Return value: - * target address on Success / 0 on Failure - */ -static u64 -get_target_identifier(peidx_table_t *peidx) -{ - u64 target_address = 0; - sal_log_mod_error_info_t *smei; - pal_cache_check_info_t *pcci; - int i, level = 9; - - /* - * Look through the cache checks for a valid target identifier - * If more than one valid target identifier, return the one - * with the lowest cache level. - */ - for (i = 0; i < peidx_cache_check_num(peidx); i++) { - smei = (sal_log_mod_error_info_t *)peidx_cache_check(peidx, i); - if (smei->valid.target_identifier && smei->target_identifier) { - pcci = (pal_cache_check_info_t *)&(smei->check_info); - if (!target_address || (pcci->level < level)) { - target_address = smei->target_identifier; - level = pcci->level; - continue; - } - } - } - if (target_address) - return target_address; - - /* - * Look at the bus check for a valid target identifier - */ - smei = peidx_bus_check(peidx, 0); - if (smei && smei->valid.target_identifier) - return smei->target_identifier; - - return 0; -} - -/** - * recover_from_read_error - Try to recover the errors which type are "read"s. - * @slidx: pointer of index of SAL error record - * @peidx: pointer of index of processor error section - * @pbci: pointer of pal_bus_check_info - * @sos: pointer to hand off struct between SAL and OS - * - * Return value: - * 1 on Success / 0 on Failure - */ - -static int -recover_from_read_error(slidx_table_t *slidx, - peidx_table_t *peidx, pal_bus_check_info_t *pbci, - struct ia64_sal_os_state *sos) -{ - u64 target_identifier; - struct pal_min_state_area *pmsa; - struct ia64_psr *psr1, *psr2; - ia64_fptr_t *mca_hdlr_bh = (ia64_fptr_t*)mca_handler_bhhook; - - /* Is target address valid? */ - target_identifier = get_target_identifier(peidx); - if (!target_identifier) - return fatal_mca("target address not valid"); - - /* - * cpu read or memory-mapped io read - * - * offending process affected process OS MCA do - * kernel mode kernel mode down system - * kernel mode user mode kill the process - * user mode kernel mode down system (*) - * user mode user mode kill the process - * - * (*) You could terminate offending user-mode process - * if (pbci->pv && pbci->pl != 0) *and* if you sure - * the process not have any locks of kernel. - */ - - /* Is minstate valid? */ - if (!peidx_bottom(peidx) || !(peidx_bottom(peidx)->valid.minstate)) - return fatal_mca("minstate not valid"); - psr1 =(struct ia64_psr *)&(peidx_minstate_area(peidx)->pmsa_ipsr); - psr2 =(struct ia64_psr *)&(peidx_minstate_area(peidx)->pmsa_xpsr); - - /* - * Check the privilege level of interrupted context. - * If it is user-mode, then terminate affected process. - */ - - pmsa = sos->pal_min_state; - if (psr1->cpl != 0 || - ((psr2->cpl != 0) && mca_recover_range(pmsa->pmsa_iip))) { - /* - * setup for resume to bottom half of MCA, - * "mca_handler_bhhook" - */ - /* pass to bhhook as argument (gr8, ...) */ - pmsa->pmsa_gr[8-1] = target_identifier; - pmsa->pmsa_gr[9-1] = pmsa->pmsa_iip; - pmsa->pmsa_gr[10-1] = pmsa->pmsa_ipsr; - /* set interrupted return address (but no use) */ - pmsa->pmsa_br0 = pmsa->pmsa_iip; - /* change resume address to bottom half */ - pmsa->pmsa_iip = mca_hdlr_bh->fp; - pmsa->pmsa_gr[1-1] = mca_hdlr_bh->gp; - /* set cpl with kernel mode */ - psr2 = (struct ia64_psr *)&pmsa->pmsa_ipsr; - psr2->cpl = 0; - psr2->ri = 0; - psr2->bn = 1; - psr2->i = 0; - - return mca_recovered("user memory corruption. " - "kill affected process - recovered."); - } - - return fatal_mca("kernel context not recovered, iip 0x%lx\n", - pmsa->pmsa_iip); -} - -/** - * recover_from_platform_error - Recover from platform error. - * @slidx: pointer of index of SAL error record - * @peidx: pointer of index of processor error section - * @pbci: pointer of pal_bus_check_info - * @sos: pointer to hand off struct between SAL and OS - * - * Return value: - * 1 on Success / 0 on Failure - */ - -static int -recover_from_platform_error(slidx_table_t *slidx, peidx_table_t *peidx, - pal_bus_check_info_t *pbci, - struct ia64_sal_os_state *sos) -{ - int status = 0; - pal_processor_state_info_t *psp = - (pal_processor_state_info_t*)peidx_psp(peidx); - - if (psp->bc && pbci->eb && pbci->bsi == 0) { - switch(pbci->type) { - case 1: /* partial read */ - case 3: /* full line(cpu) read */ - case 9: /* I/O space read */ - status = recover_from_read_error(slidx, peidx, pbci, - sos); - break; - case 0: /* unknown */ - case 2: /* partial write */ - case 4: /* full line write */ - case 5: /* implicit or explicit write-back operation */ - case 6: /* snoop probe */ - case 7: /* incoming or outgoing ptc.g */ - case 8: /* write coalescing transactions */ - case 10: /* I/O space write */ - case 11: /* inter-processor interrupt message(IPI) */ - case 12: /* interrupt acknowledge or - external task priority cycle */ - default: - break; - } - } else if (psp->cc && !psp->bc) { /* Cache error */ - status = recover_from_read_error(slidx, peidx, pbci, sos); - } - - return status; -} - -/* - * recover_from_tlb_check - * @peidx: pointer of index of processor error section - * - * Return value: - * 1 on Success / 0 on Failure - */ -static int -recover_from_tlb_check(peidx_table_t *peidx) -{ - sal_log_mod_error_info_t *smei; - pal_tlb_check_info_t *ptci; - - smei = (sal_log_mod_error_info_t *)peidx_tlb_check(peidx, 0); - ptci = (pal_tlb_check_info_t *)&(smei->check_info); - - /* - * Look for signature of a duplicate TLB DTC entry, which is - * a SW bug and always fatal. - */ - if (ptci->op == PAL_TLB_CHECK_OP_PURGE - && !(ptci->itr || ptci->dtc || ptci->itc)) - return fatal_mca("Duplicate TLB entry"); - - return mca_recovered("TLB check recovered"); -} - -/** - * recover_from_processor_error - * @platform: whether there are some platform error section or not - * @slidx: pointer of index of SAL error record - * @peidx: pointer of index of processor error section - * @pbci: pointer of pal_bus_check_info - * @sos: pointer to hand off struct between SAL and OS - * - * Return value: - * 1 on Success / 0 on Failure - */ - -static int -recover_from_processor_error(int platform, slidx_table_t *slidx, - peidx_table_t *peidx, pal_bus_check_info_t *pbci, - struct ia64_sal_os_state *sos) -{ - pal_processor_state_info_t *psp = - (pal_processor_state_info_t*)peidx_psp(peidx); - - /* - * Processor recovery status must key off of the PAL recovery - * status in the Processor State Parameter. - */ - - /* - * The machine check is corrected. - */ - if (psp->cm == 1) - return mca_recovered("machine check is already corrected."); - - /* - * The error was not contained. Software must be reset. - */ - if (psp->us || psp->ci == 0) - return fatal_mca("error not contained"); - - /* - * Look for recoverable TLB check - */ - if (psp->tc && !(psp->cc || psp->bc || psp->rc || psp->uc)) - return recover_from_tlb_check(peidx); - - /* - * The cache check and bus check bits have four possible states - * cc bc - * 1 1 Memory error, attempt recovery - * 1 0 Cache error, attempt recovery - * 0 1 I/O error, attempt recovery - * 0 0 Other error type, not recovered - */ - if (psp->cc == 0 && (psp->bc == 0 || pbci == NULL)) - return fatal_mca("No cache or bus check"); - - /* - * Cannot handle more than one bus check. - */ - if (peidx_bus_check_num(peidx) > 1) - return fatal_mca("Too many bus checks"); - - if (pbci->ib) - return fatal_mca("Internal Bus error"); - if (pbci->eb && pbci->bsi > 0) - return fatal_mca("External bus check fatal status"); - - /* - * This is a local MCA and estimated as a recoverable error. - */ - if (platform) - return recover_from_platform_error(slidx, peidx, pbci, sos); - - /* - * On account of strange SAL error record, we cannot recover. - */ - return fatal_mca("Strange SAL record"); -} - -/** - * mca_try_to_recover - Try to recover from MCA - * @rec: pointer to a SAL error record - * @sos: pointer to hand off struct between SAL and OS - * - * Return value: - * 1 on Success / 0 on Failure - */ - -static int -mca_try_to_recover(void *rec, struct ia64_sal_os_state *sos) -{ - int platform_err; - int n_proc_err; - slidx_table_t slidx; - peidx_table_t peidx; - pal_bus_check_info_t pbci; - - /* Make index of SAL error record */ - platform_err = mca_make_slidx(rec, &slidx); - - /* Count processor error sections */ - n_proc_err = slidx_count(&slidx, proc_err); - - /* Now, OS can recover when there is one processor error section */ - if (n_proc_err > 1) - return fatal_mca("Too Many Errors"); - else if (n_proc_err == 0) - /* Weird SAL record ... We can't do anything */ - return fatal_mca("Weird SAL record"); - - /* Make index of processor error section */ - mca_make_peidx((sal_log_processor_info_t*) - slidx_first_entry(&slidx.proc_err)->hdr, &peidx); - - /* Extract Processor BUS_CHECK[0] */ - *((u64*)&pbci) = peidx_check_info(&peidx, bus_check, 0); - - /* Check whether MCA is global or not */ - if (is_mca_global(&peidx, &pbci, sos)) - return fatal_mca("global MCA"); - - /* Try to recover a processor error */ - return recover_from_processor_error(platform_err, &slidx, &peidx, - &pbci, sos); -} - -/* - * ============================================================================= - */ - -int __init mca_external_handler_init(void) -{ - if (init_record_index_pools()) - return -ENOMEM; - - /* register external mca handlers */ - if (ia64_reg_MCA_extension(mca_try_to_recover)) { - printk(KERN_ERR "ia64_reg_MCA_extension failed.\n"); - kfree(slidx_pool.buffer); - return -EFAULT; - } - return 0; -} - -void __exit mca_external_handler_exit(void) -{ - /* unregister external mca handlers */ - ia64_unreg_MCA_extension(); - kfree(slidx_pool.buffer); -} - -module_init(mca_external_handler_init); -module_exit(mca_external_handler_exit); - -module_param(sal_rec_max, int, 0644); -MODULE_PARM_DESC(sal_rec_max, "Max size of SAL error record"); - -MODULE_DESCRIPTION("ia64 platform dependent mca handler driver"); -MODULE_LICENSE("GPL"); |