+++ /dev/null
-/* arch/sparc64/kernel/traps.c
- *
- * Copyright (C) 1995,1997,2008 David S. Miller (davem@davemloft.net)
- * Copyright (C) 1997,1999,2000 Jakub Jelinek (jakub@redhat.com)
- */
-
-/*
- * I like traps on v9, :))))
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/linkage.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/smp.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/kdebug.h>
-
-#include <asm/smp.h>
-#include <asm/delay.h>
-#include <asm/system.h>
-#include <asm/ptrace.h>
-#include <asm/oplib.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/unistd.h>
-#include <asm/uaccess.h>
-#include <asm/fpumacro.h>
-#include <asm/lsu.h>
-#include <asm/dcu.h>
-#include <asm/estate.h>
-#include <asm/chafsr.h>
-#include <asm/sfafsr.h>
-#include <asm/psrcompat.h>
-#include <asm/processor.h>
-#include <asm/timer.h>
-#include <asm/head.h>
-#include <asm/prom.h>
-#include <asm/memctrl.h>
-
-#include "entry.h"
-#include "kstack.h"
-
-/* When an irrecoverable trap occurs at tl > 0, the trap entry
- * code logs the trap state registers at every level in the trap
- * stack. It is found at (pt_regs + sizeof(pt_regs)) and the layout
- * is as follows:
- */
-struct tl1_traplog {
- struct {
- unsigned long tstate;
- unsigned long tpc;
- unsigned long tnpc;
- unsigned long tt;
- } trapstack[4];
- unsigned long tl;
-};
-
-static void dump_tl1_traplog(struct tl1_traplog *p)
-{
- int i, limit;
-
- printk(KERN_EMERG "TRAPLOG: Error at trap level 0x%lx, "
- "dumping track stack.\n", p->tl);
-
- limit = (tlb_type == hypervisor) ? 2 : 4;
- for (i = 0; i < limit; i++) {
- printk(KERN_EMERG
- "TRAPLOG: Trap level %d TSTATE[%016lx] TPC[%016lx] "
- "TNPC[%016lx] TT[%lx]\n",
- i + 1,
- p->trapstack[i].tstate, p->trapstack[i].tpc,
- p->trapstack[i].tnpc, p->trapstack[i].tt);
- printk("TRAPLOG: TPC<%pS>\n", (void *) p->trapstack[i].tpc);
- }
-}
-
-void bad_trap(struct pt_regs *regs, long lvl)
-{
- char buffer[32];
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "bad trap", regs,
- 0, lvl, SIGTRAP) == NOTIFY_STOP)
- return;
-
- if (lvl < 0x100) {
- sprintf(buffer, "Bad hw trap %lx at tl0\n", lvl);
- die_if_kernel(buffer, regs);
- }
-
- lvl -= 0x100;
- if (regs->tstate & TSTATE_PRIV) {
- sprintf(buffer, "Kernel bad sw trap %lx", lvl);
- die_if_kernel(buffer, regs);
- }
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- info.si_signo = SIGILL;
- info.si_errno = 0;
- info.si_code = ILL_ILLTRP;
- info.si_addr = (void __user *)regs->tpc;
- info.si_trapno = lvl;
- force_sig_info(SIGILL, &info, current);
-}
-
-void bad_trap_tl1(struct pt_regs *regs, long lvl)
-{
- char buffer[32];
-
- if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs,
- 0, lvl, SIGTRAP) == NOTIFY_STOP)
- return;
-
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
-
- sprintf (buffer, "Bad trap %lx at tl>0", lvl);
- die_if_kernel (buffer, regs);
-}
-
-#ifdef CONFIG_DEBUG_BUGVERBOSE
-void do_BUG(const char *file, int line)
-{
- bust_spinlocks(1);
- printk("kernel BUG at %s:%d!\n", file, line);
-}
-#endif
-
-static DEFINE_SPINLOCK(dimm_handler_lock);
-static dimm_printer_t dimm_handler;
-
-static int sprintf_dimm(int synd_code, unsigned long paddr, char *buf, int buflen)
-{
- unsigned long flags;
- int ret = -ENODEV;
-
- spin_lock_irqsave(&dimm_handler_lock, flags);
- if (dimm_handler) {
- ret = dimm_handler(synd_code, paddr, buf, buflen);
- } else if (tlb_type == spitfire) {
- if (prom_getunumber(synd_code, paddr, buf, buflen) == -1)
- ret = -EINVAL;
- else
- ret = 0;
- } else
- ret = -ENODEV;
- spin_unlock_irqrestore(&dimm_handler_lock, flags);
-
- return ret;
-}
-
-int register_dimm_printer(dimm_printer_t func)
-{
- unsigned long flags;
- int ret = 0;
-
- spin_lock_irqsave(&dimm_handler_lock, flags);
- if (!dimm_handler)
- dimm_handler = func;
- else
- ret = -EEXIST;
- spin_unlock_irqrestore(&dimm_handler_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(register_dimm_printer);
-
-void unregister_dimm_printer(dimm_printer_t func)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&dimm_handler_lock, flags);
- if (dimm_handler == func)
- dimm_handler = NULL;
- spin_unlock_irqrestore(&dimm_handler_lock, flags);
-}
-EXPORT_SYMBOL_GPL(unregister_dimm_printer);
-
-void spitfire_insn_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
-{
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "instruction access exception", regs,
- 0, 0x8, SIGTRAP) == NOTIFY_STOP)
- return;
-
- if (regs->tstate & TSTATE_PRIV) {
- printk("spitfire_insn_access_exception: SFSR[%016lx] "
- "SFAR[%016lx], going.\n", sfsr, sfar);
- die_if_kernel("Iax", regs);
- }
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- info.si_code = SEGV_MAPERR;
- info.si_addr = (void __user *)regs->tpc;
- info.si_trapno = 0;
- force_sig_info(SIGSEGV, &info, current);
-}
-
-void spitfire_insn_access_exception_tl1(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
-{
- if (notify_die(DIE_TRAP_TL1, "instruction access exception tl1", regs,
- 0, 0x8, SIGTRAP) == NOTIFY_STOP)
- return;
-
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- spitfire_insn_access_exception(regs, sfsr, sfar);
-}
-
-void sun4v_insn_access_exception(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
-{
- unsigned short type = (type_ctx >> 16);
- unsigned short ctx = (type_ctx & 0xffff);
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "instruction access exception", regs,
- 0, 0x8, SIGTRAP) == NOTIFY_STOP)
- return;
-
- if (regs->tstate & TSTATE_PRIV) {
- printk("sun4v_insn_access_exception: ADDR[%016lx] "
- "CTX[%04x] TYPE[%04x], going.\n",
- addr, ctx, type);
- die_if_kernel("Iax", regs);
- }
-
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- info.si_code = SEGV_MAPERR;
- info.si_addr = (void __user *) addr;
- info.si_trapno = 0;
- force_sig_info(SIGSEGV, &info, current);
-}
-
-void sun4v_insn_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
-{
- if (notify_die(DIE_TRAP_TL1, "instruction access exception tl1", regs,
- 0, 0x8, SIGTRAP) == NOTIFY_STOP)
- return;
-
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- sun4v_insn_access_exception(regs, addr, type_ctx);
-}
-
-void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
-{
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "data access exception", regs,
- 0, 0x30, SIGTRAP) == NOTIFY_STOP)
- return;
-
- if (regs->tstate & TSTATE_PRIV) {
- /* Test if this comes from uaccess places. */
- const struct exception_table_entry *entry;
-
- entry = search_exception_tables(regs->tpc);
- if (entry) {
- /* Ouch, somebody is trying VM hole tricks on us... */
-#ifdef DEBUG_EXCEPTIONS
- printk("Exception: PC<%016lx> faddr<UNKNOWN>\n", regs->tpc);
- printk("EX_TABLE: insn<%016lx> fixup<%016lx>\n",
- regs->tpc, entry->fixup);
-#endif
- regs->tpc = entry->fixup;
- regs->tnpc = regs->tpc + 4;
- return;
- }
- /* Shit... */
- printk("spitfire_data_access_exception: SFSR[%016lx] "
- "SFAR[%016lx], going.\n", sfsr, sfar);
- die_if_kernel("Dax", regs);
- }
-
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- info.si_code = SEGV_MAPERR;
- info.si_addr = (void __user *)sfar;
- info.si_trapno = 0;
- force_sig_info(SIGSEGV, &info, current);
-}
-
-void spitfire_data_access_exception_tl1(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
-{
- if (notify_die(DIE_TRAP_TL1, "data access exception tl1", regs,
- 0, 0x30, SIGTRAP) == NOTIFY_STOP)
- return;
-
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- spitfire_data_access_exception(regs, sfsr, sfar);
-}
-
-void sun4v_data_access_exception(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
-{
- unsigned short type = (type_ctx >> 16);
- unsigned short ctx = (type_ctx & 0xffff);
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "data access exception", regs,
- 0, 0x8, SIGTRAP) == NOTIFY_STOP)
- return;
-
- if (regs->tstate & TSTATE_PRIV) {
- printk("sun4v_data_access_exception: ADDR[%016lx] "
- "CTX[%04x] TYPE[%04x], going.\n",
- addr, ctx, type);
- die_if_kernel("Dax", regs);
- }
-
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- info.si_code = SEGV_MAPERR;
- info.si_addr = (void __user *) addr;
- info.si_trapno = 0;
- force_sig_info(SIGSEGV, &info, current);
-}
-
-void sun4v_data_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
-{
- if (notify_die(DIE_TRAP_TL1, "data access exception tl1", regs,
- 0, 0x8, SIGTRAP) == NOTIFY_STOP)
- return;
-
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- sun4v_data_access_exception(regs, addr, type_ctx);
-}
-
-#ifdef CONFIG_PCI
-#include "pci_impl.h"
-#endif
-
-/* When access exceptions happen, we must do this. */
-static void spitfire_clean_and_reenable_l1_caches(void)
-{
- unsigned long va;
-
- if (tlb_type != spitfire)
- BUG();
-
- /* Clean 'em. */
- for (va = 0; va < (PAGE_SIZE << 1); va += 32) {
- spitfire_put_icache_tag(va, 0x0);
- spitfire_put_dcache_tag(va, 0x0);
- }
-
- /* Re-enable in LSU. */
- __asm__ __volatile__("flush %%g6\n\t"
- "membar #Sync\n\t"
- "stxa %0, [%%g0] %1\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (LSU_CONTROL_IC | LSU_CONTROL_DC |
- LSU_CONTROL_IM | LSU_CONTROL_DM),
- "i" (ASI_LSU_CONTROL)
- : "memory");
-}
-
-static void spitfire_enable_estate_errors(void)
-{
- __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (ESTATE_ERR_ALL),
- "i" (ASI_ESTATE_ERROR_EN));
-}
-
-static char ecc_syndrome_table[] = {
- 0x4c, 0x40, 0x41, 0x48, 0x42, 0x48, 0x48, 0x49,
- 0x43, 0x48, 0x48, 0x49, 0x48, 0x49, 0x49, 0x4a,
- 0x44, 0x48, 0x48, 0x20, 0x48, 0x39, 0x4b, 0x48,
- 0x48, 0x25, 0x31, 0x48, 0x28, 0x48, 0x48, 0x2c,
- 0x45, 0x48, 0x48, 0x21, 0x48, 0x3d, 0x04, 0x48,
- 0x48, 0x4b, 0x35, 0x48, 0x2d, 0x48, 0x48, 0x29,
- 0x48, 0x00, 0x01, 0x48, 0x0a, 0x48, 0x48, 0x4b,
- 0x0f, 0x48, 0x48, 0x4b, 0x48, 0x49, 0x49, 0x48,
- 0x46, 0x48, 0x48, 0x2a, 0x48, 0x3b, 0x27, 0x48,
- 0x48, 0x4b, 0x33, 0x48, 0x22, 0x48, 0x48, 0x2e,
- 0x48, 0x19, 0x1d, 0x48, 0x1b, 0x4a, 0x48, 0x4b,
- 0x1f, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48,
- 0x48, 0x4b, 0x24, 0x48, 0x07, 0x48, 0x48, 0x36,
- 0x4b, 0x48, 0x48, 0x3e, 0x48, 0x30, 0x38, 0x48,
- 0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x16, 0x48,
- 0x48, 0x12, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b,
- 0x47, 0x48, 0x48, 0x2f, 0x48, 0x3f, 0x4b, 0x48,
- 0x48, 0x06, 0x37, 0x48, 0x23, 0x48, 0x48, 0x2b,
- 0x48, 0x05, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x32,
- 0x26, 0x48, 0x48, 0x3a, 0x48, 0x34, 0x3c, 0x48,
- 0x48, 0x11, 0x15, 0x48, 0x13, 0x4a, 0x48, 0x4b,
- 0x17, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48,
- 0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x1e, 0x48,
- 0x48, 0x1a, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b,
- 0x48, 0x08, 0x0d, 0x48, 0x02, 0x48, 0x48, 0x49,
- 0x03, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x4b, 0x48,
- 0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x10, 0x48,
- 0x48, 0x14, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b,
- 0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x18, 0x48,
- 0x48, 0x1c, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b,
- 0x4a, 0x0c, 0x09, 0x48, 0x0e, 0x48, 0x48, 0x4b,
- 0x0b, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x4b, 0x4a
-};
-
-static char *syndrome_unknown = "<Unknown>";
-
-static void spitfire_log_udb_syndrome(unsigned long afar, unsigned long udbh, unsigned long udbl, unsigned long bit)
-{
- unsigned short scode;
- char memmod_str[64], *p;
-
- if (udbl & bit) {
- scode = ecc_syndrome_table[udbl & 0xff];
- if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0)
- p = syndrome_unknown;
- else
- p = memmod_str;
- printk(KERN_WARNING "CPU[%d]: UDBL Syndrome[%x] "
- "Memory Module \"%s\"\n",
- smp_processor_id(), scode, p);
- }
-
- if (udbh & bit) {
- scode = ecc_syndrome_table[udbh & 0xff];
- if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0)
- p = syndrome_unknown;
- else
- p = memmod_str;
- printk(KERN_WARNING "CPU[%d]: UDBH Syndrome[%x] "
- "Memory Module \"%s\"\n",
- smp_processor_id(), scode, p);
- }
-
-}
-
-static void spitfire_cee_log(unsigned long afsr, unsigned long afar, unsigned long udbh, unsigned long udbl, int tl1, struct pt_regs *regs)
-{
-
- printk(KERN_WARNING "CPU[%d]: Correctable ECC Error "
- "AFSR[%lx] AFAR[%016lx] UDBL[%lx] UDBH[%lx] TL>1[%d]\n",
- smp_processor_id(), afsr, afar, udbl, udbh, tl1);
-
- spitfire_log_udb_syndrome(afar, udbh, udbl, UDBE_CE);
-
- /* We always log it, even if someone is listening for this
- * trap.
- */
- notify_die(DIE_TRAP, "Correctable ECC Error", regs,
- 0, TRAP_TYPE_CEE, SIGTRAP);
-
- /* The Correctable ECC Error trap does not disable I/D caches. So
- * we only have to restore the ESTATE Error Enable register.
- */
- spitfire_enable_estate_errors();
-}
-
-static void spitfire_ue_log(unsigned long afsr, unsigned long afar, unsigned long udbh, unsigned long udbl, unsigned long tt, int tl1, struct pt_regs *regs)
-{
- siginfo_t info;
-
- printk(KERN_WARNING "CPU[%d]: Uncorrectable Error AFSR[%lx] "
- "AFAR[%lx] UDBL[%lx] UDBH[%ld] TT[%lx] TL>1[%d]\n",
- smp_processor_id(), afsr, afar, udbl, udbh, tt, tl1);
-
- /* XXX add more human friendly logging of the error status
- * XXX as is implemented for cheetah
- */
-
- spitfire_log_udb_syndrome(afar, udbh, udbl, UDBE_UE);
-
- /* We always log it, even if someone is listening for this
- * trap.
- */
- notify_die(DIE_TRAP, "Uncorrectable Error", regs,
- 0, tt, SIGTRAP);
-
- if (regs->tstate & TSTATE_PRIV) {
- if (tl1)
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("UE", regs);
- }
-
- /* XXX need more intelligent processing here, such as is implemented
- * XXX for cheetah errors, in fact if the E-cache still holds the
- * XXX line with bad parity this will loop
- */
-
- spitfire_clean_and_reenable_l1_caches();
- spitfire_enable_estate_errors();
-
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_OBJERR;
- info.si_addr = (void *)0;
- info.si_trapno = 0;
- force_sig_info(SIGBUS, &info, current);
-}
-
-void spitfire_access_error(struct pt_regs *regs, unsigned long status_encoded, unsigned long afar)
-{
- unsigned long afsr, tt, udbh, udbl;
- int tl1;
-
- afsr = (status_encoded & SFSTAT_AFSR_MASK) >> SFSTAT_AFSR_SHIFT;
- tt = (status_encoded & SFSTAT_TRAP_TYPE) >> SFSTAT_TRAP_TYPE_SHIFT;
- tl1 = (status_encoded & SFSTAT_TL_GT_ONE) ? 1 : 0;
- udbl = (status_encoded & SFSTAT_UDBL_MASK) >> SFSTAT_UDBL_SHIFT;
- udbh = (status_encoded & SFSTAT_UDBH_MASK) >> SFSTAT_UDBH_SHIFT;
-
-#ifdef CONFIG_PCI
- if (tt == TRAP_TYPE_DAE &&
- pci_poke_in_progress && pci_poke_cpu == smp_processor_id()) {
- spitfire_clean_and_reenable_l1_caches();
- spitfire_enable_estate_errors();
-
- pci_poke_faulted = 1;
- regs->tnpc = regs->tpc + 4;
- return;
- }
-#endif
-
- if (afsr & SFAFSR_UE)
- spitfire_ue_log(afsr, afar, udbh, udbl, tt, tl1, regs);
-
- if (tt == TRAP_TYPE_CEE) {
- /* Handle the case where we took a CEE trap, but ACK'd
- * only the UE state in the UDB error registers.
- */
- if (afsr & SFAFSR_UE) {
- if (udbh & UDBE_CE) {
- __asm__ __volatile__(
- "stxa %0, [%1] %2\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (udbh & UDBE_CE),
- "r" (0x0), "i" (ASI_UDB_ERROR_W));
- }
- if (udbl & UDBE_CE) {
- __asm__ __volatile__(
- "stxa %0, [%1] %2\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (udbl & UDBE_CE),
- "r" (0x18), "i" (ASI_UDB_ERROR_W));
- }
- }
-
- spitfire_cee_log(afsr, afar, udbh, udbl, tl1, regs);
- }
-}
-
-int cheetah_pcache_forced_on;
-
-void cheetah_enable_pcache(void)
-{
- unsigned long dcr;
-
- printk("CHEETAH: Enabling P-Cache on cpu %d.\n",
- smp_processor_id());
-
- __asm__ __volatile__("ldxa [%%g0] %1, %0"
- : "=r" (dcr)
- : "i" (ASI_DCU_CONTROL_REG));
- dcr |= (DCU_PE | DCU_HPE | DCU_SPE | DCU_SL);
- __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (dcr), "i" (ASI_DCU_CONTROL_REG));
-}
-
-/* Cheetah error trap handling. */
-static unsigned long ecache_flush_physbase;
-static unsigned long ecache_flush_linesize;
-static unsigned long ecache_flush_size;
-
-/* This table is ordered in priority of errors and matches the
- * AFAR overwrite policy as well.
- */
-
-struct afsr_error_table {
- unsigned long mask;
- const char *name;
-};
-
-static const char CHAFSR_PERR_msg[] =
- "System interface protocol error";
-static const char CHAFSR_IERR_msg[] =
- "Internal processor error";
-static const char CHAFSR_ISAP_msg[] =
- "System request parity error on incoming addresss";
-static const char CHAFSR_UCU_msg[] =
- "Uncorrectable E-cache ECC error for ifetch/data";
-static const char CHAFSR_UCC_msg[] =
- "SW Correctable E-cache ECC error for ifetch/data";
-static const char CHAFSR_UE_msg[] =
- "Uncorrectable system bus data ECC error for read";
-static const char CHAFSR_EDU_msg[] =
- "Uncorrectable E-cache ECC error for stmerge/blkld";
-static const char CHAFSR_EMU_msg[] =
- "Uncorrectable system bus MTAG error";
-static const char CHAFSR_WDU_msg[] =
- "Uncorrectable E-cache ECC error for writeback";
-static const char CHAFSR_CPU_msg[] =
- "Uncorrectable ECC error for copyout";
-static const char CHAFSR_CE_msg[] =
- "HW corrected system bus data ECC error for read";
-static const char CHAFSR_EDC_msg[] =
- "HW corrected E-cache ECC error for stmerge/blkld";
-static const char CHAFSR_EMC_msg[] =
- "HW corrected system bus MTAG ECC error";
-static const char CHAFSR_WDC_msg[] =
- "HW corrected E-cache ECC error for writeback";
-static const char CHAFSR_CPC_msg[] =
- "HW corrected ECC error for copyout";
-static const char CHAFSR_TO_msg[] =
- "Unmapped error from system bus";
-static const char CHAFSR_BERR_msg[] =
- "Bus error response from system bus";
-static const char CHAFSR_IVC_msg[] =
- "HW corrected system bus data ECC error for ivec read";
-static const char CHAFSR_IVU_msg[] =
- "Uncorrectable system bus data ECC error for ivec read";
-static struct afsr_error_table __cheetah_error_table[] = {
- { CHAFSR_PERR, CHAFSR_PERR_msg },
- { CHAFSR_IERR, CHAFSR_IERR_msg },
- { CHAFSR_ISAP, CHAFSR_ISAP_msg },
- { CHAFSR_UCU, CHAFSR_UCU_msg },
- { CHAFSR_UCC, CHAFSR_UCC_msg },
- { CHAFSR_UE, CHAFSR_UE_msg },
- { CHAFSR_EDU, CHAFSR_EDU_msg },
- { CHAFSR_EMU, CHAFSR_EMU_msg },
- { CHAFSR_WDU, CHAFSR_WDU_msg },
- { CHAFSR_CPU, CHAFSR_CPU_msg },
- { CHAFSR_CE, CHAFSR_CE_msg },
- { CHAFSR_EDC, CHAFSR_EDC_msg },
- { CHAFSR_EMC, CHAFSR_EMC_msg },
- { CHAFSR_WDC, CHAFSR_WDC_msg },
- { CHAFSR_CPC, CHAFSR_CPC_msg },
- { CHAFSR_TO, CHAFSR_TO_msg },
- { CHAFSR_BERR, CHAFSR_BERR_msg },
- /* These two do not update the AFAR. */
- { CHAFSR_IVC, CHAFSR_IVC_msg },
- { CHAFSR_IVU, CHAFSR_IVU_msg },
- { 0, NULL },
-};
-static const char CHPAFSR_DTO_msg[] =
- "System bus unmapped error for prefetch/storequeue-read";
-static const char CHPAFSR_DBERR_msg[] =
- "System bus error for prefetch/storequeue-read";
-static const char CHPAFSR_THCE_msg[] =
- "Hardware corrected E-cache Tag ECC error";
-static const char CHPAFSR_TSCE_msg[] =
- "SW handled correctable E-cache Tag ECC error";
-static const char CHPAFSR_TUE_msg[] =
- "Uncorrectable E-cache Tag ECC error";
-static const char CHPAFSR_DUE_msg[] =
- "System bus uncorrectable data ECC error due to prefetch/store-fill";
-static struct afsr_error_table __cheetah_plus_error_table[] = {
- { CHAFSR_PERR, CHAFSR_PERR_msg },
- { CHAFSR_IERR, CHAFSR_IERR_msg },
- { CHAFSR_ISAP, CHAFSR_ISAP_msg },
- { CHAFSR_UCU, CHAFSR_UCU_msg },
- { CHAFSR_UCC, CHAFSR_UCC_msg },
- { CHAFSR_UE, CHAFSR_UE_msg },
- { CHAFSR_EDU, CHAFSR_EDU_msg },
- { CHAFSR_EMU, CHAFSR_EMU_msg },
- { CHAFSR_WDU, CHAFSR_WDU_msg },
- { CHAFSR_CPU, CHAFSR_CPU_msg },
- { CHAFSR_CE, CHAFSR_CE_msg },
- { CHAFSR_EDC, CHAFSR_EDC_msg },
- { CHAFSR_EMC, CHAFSR_EMC_msg },
- { CHAFSR_WDC, CHAFSR_WDC_msg },
- { CHAFSR_CPC, CHAFSR_CPC_msg },
- { CHAFSR_TO, CHAFSR_TO_msg },
- { CHAFSR_BERR, CHAFSR_BERR_msg },
- { CHPAFSR_DTO, CHPAFSR_DTO_msg },
- { CHPAFSR_DBERR, CHPAFSR_DBERR_msg },
- { CHPAFSR_THCE, CHPAFSR_THCE_msg },
- { CHPAFSR_TSCE, CHPAFSR_TSCE_msg },
- { CHPAFSR_TUE, CHPAFSR_TUE_msg },
- { CHPAFSR_DUE, CHPAFSR_DUE_msg },
- /* These two do not update the AFAR. */
- { CHAFSR_IVC, CHAFSR_IVC_msg },
- { CHAFSR_IVU, CHAFSR_IVU_msg },
- { 0, NULL },
-};
-static const char JPAFSR_JETO_msg[] =
- "System interface protocol error, hw timeout caused";
-static const char JPAFSR_SCE_msg[] =
- "Parity error on system snoop results";
-static const char JPAFSR_JEIC_msg[] =
- "System interface protocol error, illegal command detected";
-static const char JPAFSR_JEIT_msg[] =
- "System interface protocol error, illegal ADTYPE detected";
-static const char JPAFSR_OM_msg[] =
- "Out of range memory error has occurred";
-static const char JPAFSR_ETP_msg[] =
- "Parity error on L2 cache tag SRAM";
-static const char JPAFSR_UMS_msg[] =
- "Error due to unsupported store";
-static const char JPAFSR_RUE_msg[] =
- "Uncorrectable ECC error from remote cache/memory";
-static const char JPAFSR_RCE_msg[] =
- "Correctable ECC error from remote cache/memory";
-static const char JPAFSR_BP_msg[] =
- "JBUS parity error on returned read data";
-static const char JPAFSR_WBP_msg[] =
- "JBUS parity error on data for writeback or block store";
-static const char JPAFSR_FRC_msg[] =
- "Foreign read to DRAM incurring correctable ECC error";
-static const char JPAFSR_FRU_msg[] =
- "Foreign read to DRAM incurring uncorrectable ECC error";
-static struct afsr_error_table __jalapeno_error_table[] = {
- { JPAFSR_JETO, JPAFSR_JETO_msg },
- { JPAFSR_SCE, JPAFSR_SCE_msg },
- { JPAFSR_JEIC, JPAFSR_JEIC_msg },
- { JPAFSR_JEIT, JPAFSR_JEIT_msg },
- { CHAFSR_PERR, CHAFSR_PERR_msg },
- { CHAFSR_IERR, CHAFSR_IERR_msg },
- { CHAFSR_ISAP, CHAFSR_ISAP_msg },
- { CHAFSR_UCU, CHAFSR_UCU_msg },
- { CHAFSR_UCC, CHAFSR_UCC_msg },
- { CHAFSR_UE, CHAFSR_UE_msg },
- { CHAFSR_EDU, CHAFSR_EDU_msg },
- { JPAFSR_OM, JPAFSR_OM_msg },
- { CHAFSR_WDU, CHAFSR_WDU_msg },
- { CHAFSR_CPU, CHAFSR_CPU_msg },
- { CHAFSR_CE, CHAFSR_CE_msg },
- { CHAFSR_EDC, CHAFSR_EDC_msg },
- { JPAFSR_ETP, JPAFSR_ETP_msg },
- { CHAFSR_WDC, CHAFSR_WDC_msg },
- { CHAFSR_CPC, CHAFSR_CPC_msg },
- { CHAFSR_TO, CHAFSR_TO_msg },
- { CHAFSR_BERR, CHAFSR_BERR_msg },
- { JPAFSR_UMS, JPAFSR_UMS_msg },
- { JPAFSR_RUE, JPAFSR_RUE_msg },
- { JPAFSR_RCE, JPAFSR_RCE_msg },
- { JPAFSR_BP, JPAFSR_BP_msg },
- { JPAFSR_WBP, JPAFSR_WBP_msg },
- { JPAFSR_FRC, JPAFSR_FRC_msg },
- { JPAFSR_FRU, JPAFSR_FRU_msg },
- /* These two do not update the AFAR. */
- { CHAFSR_IVU, CHAFSR_IVU_msg },
- { 0, NULL },
-};
-static struct afsr_error_table *cheetah_error_table;
-static unsigned long cheetah_afsr_errors;
-
-struct cheetah_err_info *cheetah_error_log;
-
-static inline struct cheetah_err_info *cheetah_get_error_log(unsigned long afsr)
-{
- struct cheetah_err_info *p;
- int cpu = smp_processor_id();
-
- if (!cheetah_error_log)
- return NULL;
-
- p = cheetah_error_log + (cpu * 2);
- if ((afsr & CHAFSR_TL1) != 0UL)
- p++;
-
- return p;
-}
-
-extern unsigned int tl0_icpe[], tl1_icpe[];
-extern unsigned int tl0_dcpe[], tl1_dcpe[];
-extern unsigned int tl0_fecc[], tl1_fecc[];
-extern unsigned int tl0_cee[], tl1_cee[];
-extern unsigned int tl0_iae[], tl1_iae[];
-extern unsigned int tl0_dae[], tl1_dae[];
-extern unsigned int cheetah_plus_icpe_trap_vector[], cheetah_plus_icpe_trap_vector_tl1[];
-extern unsigned int cheetah_plus_dcpe_trap_vector[], cheetah_plus_dcpe_trap_vector_tl1[];
-extern unsigned int cheetah_fecc_trap_vector[], cheetah_fecc_trap_vector_tl1[];
-extern unsigned int cheetah_cee_trap_vector[], cheetah_cee_trap_vector_tl1[];
-extern unsigned int cheetah_deferred_trap_vector[], cheetah_deferred_trap_vector_tl1[];
-
-void __init cheetah_ecache_flush_init(void)
-{
- unsigned long largest_size, smallest_linesize, order, ver;
- int i, sz;
-
- /* Scan all cpu device tree nodes, note two values:
- * 1) largest E-cache size
- * 2) smallest E-cache line size
- */
- largest_size = 0UL;
- smallest_linesize = ~0UL;
-
- for (i = 0; i < NR_CPUS; i++) {
- unsigned long val;
-
- val = cpu_data(i).ecache_size;
- if (!val)
- continue;
-
- if (val > largest_size)
- largest_size = val;
-
- val = cpu_data(i).ecache_line_size;
- if (val < smallest_linesize)
- smallest_linesize = val;
-
- }
-
- if (largest_size == 0UL || smallest_linesize == ~0UL) {
- prom_printf("cheetah_ecache_flush_init: Cannot probe cpu E-cache "
- "parameters.\n");
- prom_halt();
- }
-
- ecache_flush_size = (2 * largest_size);
- ecache_flush_linesize = smallest_linesize;
-
- ecache_flush_physbase = find_ecache_flush_span(ecache_flush_size);
-
- if (ecache_flush_physbase == ~0UL) {
- prom_printf("cheetah_ecache_flush_init: Cannot find %d byte "
- "contiguous physical memory.\n",
- ecache_flush_size);
- prom_halt();
- }
-
- /* Now allocate error trap reporting scoreboard. */
- sz = NR_CPUS * (2 * sizeof(struct cheetah_err_info));
- for (order = 0; order < MAX_ORDER; order++) {
- if ((PAGE_SIZE << order) >= sz)
- break;
- }
- cheetah_error_log = (struct cheetah_err_info *)
- __get_free_pages(GFP_KERNEL, order);
- if (!cheetah_error_log) {
- prom_printf("cheetah_ecache_flush_init: Failed to allocate "
- "error logging scoreboard (%d bytes).\n", sz);
- prom_halt();
- }
- memset(cheetah_error_log, 0, PAGE_SIZE << order);
-
- /* Mark all AFSRs as invalid so that the trap handler will
- * log new new information there.
- */
- for (i = 0; i < 2 * NR_CPUS; i++)
- cheetah_error_log[i].afsr = CHAFSR_INVALID;
-
- __asm__ ("rdpr %%ver, %0" : "=r" (ver));
- if ((ver >> 32) == __JALAPENO_ID ||
- (ver >> 32) == __SERRANO_ID) {
- cheetah_error_table = &__jalapeno_error_table[0];
- cheetah_afsr_errors = JPAFSR_ERRORS;
- } else if ((ver >> 32) == 0x003e0015) {
- cheetah_error_table = &__cheetah_plus_error_table[0];
- cheetah_afsr_errors = CHPAFSR_ERRORS;
- } else {
- cheetah_error_table = &__cheetah_error_table[0];
- cheetah_afsr_errors = CHAFSR_ERRORS;
- }
-
- /* Now patch trap tables. */
- memcpy(tl0_fecc, cheetah_fecc_trap_vector, (8 * 4));
- memcpy(tl1_fecc, cheetah_fecc_trap_vector_tl1, (8 * 4));
- memcpy(tl0_cee, cheetah_cee_trap_vector, (8 * 4));
- memcpy(tl1_cee, cheetah_cee_trap_vector_tl1, (8 * 4));
- memcpy(tl0_iae, cheetah_deferred_trap_vector, (8 * 4));
- memcpy(tl1_iae, cheetah_deferred_trap_vector_tl1, (8 * 4));
- memcpy(tl0_dae, cheetah_deferred_trap_vector, (8 * 4));
- memcpy(tl1_dae, cheetah_deferred_trap_vector_tl1, (8 * 4));
- if (tlb_type == cheetah_plus) {
- memcpy(tl0_dcpe, cheetah_plus_dcpe_trap_vector, (8 * 4));
- memcpy(tl1_dcpe, cheetah_plus_dcpe_trap_vector_tl1, (8 * 4));
- memcpy(tl0_icpe, cheetah_plus_icpe_trap_vector, (8 * 4));
- memcpy(tl1_icpe, cheetah_plus_icpe_trap_vector_tl1, (8 * 4));
- }
- flushi(PAGE_OFFSET);
-}
-
-static void cheetah_flush_ecache(void)
-{
- unsigned long flush_base = ecache_flush_physbase;
- unsigned long flush_linesize = ecache_flush_linesize;
- unsigned long flush_size = ecache_flush_size;
-
- __asm__ __volatile__("1: subcc %0, %4, %0\n\t"
- " bne,pt %%xcc, 1b\n\t"
- " ldxa [%2 + %0] %3, %%g0\n\t"
- : "=&r" (flush_size)
- : "0" (flush_size), "r" (flush_base),
- "i" (ASI_PHYS_USE_EC), "r" (flush_linesize));
-}
-
-static void cheetah_flush_ecache_line(unsigned long physaddr)
-{
- unsigned long alias;
-
- physaddr &= ~(8UL - 1UL);
- physaddr = (ecache_flush_physbase +
- (physaddr & ((ecache_flush_size>>1UL) - 1UL)));
- alias = physaddr + (ecache_flush_size >> 1UL);
- __asm__ __volatile__("ldxa [%0] %2, %%g0\n\t"
- "ldxa [%1] %2, %%g0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (physaddr), "r" (alias),
- "i" (ASI_PHYS_USE_EC));
-}
-
-/* Unfortunately, the diagnostic access to the I-cache tags we need to
- * use to clear the thing interferes with I-cache coherency transactions.
- *
- * So we must only flush the I-cache when it is disabled.
- */
-static void __cheetah_flush_icache(void)
-{
- unsigned int icache_size, icache_line_size;
- unsigned long addr;
-
- icache_size = local_cpu_data().icache_size;
- icache_line_size = local_cpu_data().icache_line_size;
-
- /* Clear the valid bits in all the tags. */
- for (addr = 0; addr < icache_size; addr += icache_line_size) {
- __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (addr | (2 << 3)),
- "i" (ASI_IC_TAG));
- }
-}
-
-static void cheetah_flush_icache(void)
-{
- unsigned long dcu_save;
-
- /* Save current DCU, disable I-cache. */
- __asm__ __volatile__("ldxa [%%g0] %1, %0\n\t"
- "or %0, %2, %%g1\n\t"
- "stxa %%g1, [%%g0] %1\n\t"
- "membar #Sync"
- : "=r" (dcu_save)
- : "i" (ASI_DCU_CONTROL_REG), "i" (DCU_IC)
- : "g1");
-
- __cheetah_flush_icache();
-
- /* Restore DCU register */
- __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (dcu_save), "i" (ASI_DCU_CONTROL_REG));
-}
-
-static void cheetah_flush_dcache(void)
-{
- unsigned int dcache_size, dcache_line_size;
- unsigned long addr;
-
- dcache_size = local_cpu_data().dcache_size;
- dcache_line_size = local_cpu_data().dcache_line_size;
-
- for (addr = 0; addr < dcache_size; addr += dcache_line_size) {
- __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (addr), "i" (ASI_DCACHE_TAG));
- }
-}
-
-/* In order to make the even parity correct we must do two things.
- * First, we clear DC_data_parity and set DC_utag to an appropriate value.
- * Next, we clear out all 32-bytes of data for that line. Data of
- * all-zero + tag parity value of zero == correct parity.
- */
-static void cheetah_plus_zap_dcache_parity(void)
-{
- unsigned int dcache_size, dcache_line_size;
- unsigned long addr;
-
- dcache_size = local_cpu_data().dcache_size;
- dcache_line_size = local_cpu_data().dcache_line_size;
-
- for (addr = 0; addr < dcache_size; addr += dcache_line_size) {
- unsigned long tag = (addr >> 14);
- unsigned long line;
-
- __asm__ __volatile__("membar #Sync\n\t"
- "stxa %0, [%1] %2\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (tag), "r" (addr),
- "i" (ASI_DCACHE_UTAG));
- for (line = addr; line < addr + dcache_line_size; line += 8)
- __asm__ __volatile__("membar #Sync\n\t"
- "stxa %%g0, [%0] %1\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (line),
- "i" (ASI_DCACHE_DATA));
- }
-}
-
-/* Conversion tables used to frob Cheetah AFSR syndrome values into
- * something palatable to the memory controller driver get_unumber
- * routine.
- */
-#define MT0 137
-#define MT1 138
-#define MT2 139
-#define NONE 254
-#define MTC0 140
-#define MTC1 141
-#define MTC2 142
-#define MTC3 143
-#define C0 128
-#define C1 129
-#define C2 130
-#define C3 131
-#define C4 132
-#define C5 133
-#define C6 134
-#define C7 135
-#define C8 136
-#define M2 144
-#define M3 145
-#define M4 146
-#define M 147
-static unsigned char cheetah_ecc_syntab[] = {
-/*00*/NONE, C0, C1, M2, C2, M2, M3, 47, C3, M2, M2, 53, M2, 41, 29, M,
-/*01*/C4, M, M, 50, M2, 38, 25, M2, M2, 33, 24, M2, 11, M, M2, 16,
-/*02*/C5, M, M, 46, M2, 37, 19, M2, M, 31, 32, M, 7, M2, M2, 10,
-/*03*/M2, 40, 13, M2, 59, M, M2, 66, M, M2, M2, 0, M2, 67, 71, M,
-/*04*/C6, M, M, 43, M, 36, 18, M, M2, 49, 15, M, 63, M2, M2, 6,
-/*05*/M2, 44, 28, M2, M, M2, M2, 52, 68, M2, M2, 62, M2, M3, M3, M4,
-/*06*/M2, 26, 106, M2, 64, M, M2, 2, 120, M, M2, M3, M, M3, M3, M4,
-/*07*/116, M2, M2, M3, M2, M3, M, M4, M2, 58, 54, M2, M, M4, M4, M3,
-/*08*/C7, M2, M, 42, M, 35, 17, M2, M, 45, 14, M2, 21, M2, M2, 5,
-/*09*/M, 27, M, M, 99, M, M, 3, 114, M2, M2, 20, M2, M3, M3, M,
-/*0a*/M2, 23, 113, M2, 112, M2, M, 51, 95, M, M2, M3, M2, M3, M3, M2,
-/*0b*/103, M, M2, M3, M2, M3, M3, M4, M2, 48, M, M, 73, M2, M, M3,
-/*0c*/M2, 22, 110, M2, 109, M2, M, 9, 108, M2, M, M3, M2, M3, M3, M,
-/*0d*/102, M2, M, M, M2, M3, M3, M, M2, M3, M3, M2, M, M4, M, M3,
-/*0e*/98, M, M2, M3, M2, M, M3, M4, M2, M3, M3, M4, M3, M, M, M,
-/*0f*/M2, M3, M3, M, M3, M, M, M, 56, M4, M, M3, M4, M, M, M,
-/*10*/C8, M, M2, 39, M, 34, 105, M2, M, 30, 104, M, 101, M, M, 4,
-/*11*/M, M, 100, M, 83, M, M2, 12, 87, M, M, 57, M2, M, M3, M,
-/*12*/M2, 97, 82, M2, 78, M2, M2, 1, 96, M, M, M, M, M, M3, M2,
-/*13*/94, M, M2, M3, M2, M, M3, M, M2, M, 79, M, 69, M, M4, M,
-/*14*/M2, 93, 92, M, 91, M, M2, 8, 90, M2, M2, M, M, M, M, M4,
-/*15*/89, M, M, M3, M2, M3, M3, M, M, M, M3, M2, M3, M2, M, M3,
-/*16*/86, M, M2, M3, M2, M, M3, M, M2, M, M3, M, M3, M, M, M3,
-/*17*/M, M, M3, M2, M3, M2, M4, M, 60, M, M2, M3, M4, M, M, M2,
-/*18*/M2, 88, 85, M2, 84, M, M2, 55, 81, M2, M2, M3, M2, M3, M3, M4,
-/*19*/77, M, M, M, M2, M3, M, M, M2, M3, M3, M4, M3, M2, M, M,
-/*1a*/74, M, M2, M3, M, M, M3, M, M, M, M3, M, M3, M, M4, M3,
-/*1b*/M2, 70, 107, M4, 65, M2, M2, M, 127, M, M, M, M2, M3, M3, M,
-/*1c*/80, M2, M2, 72, M, 119, 118, M, M2, 126, 76, M, 125, M, M4, M3,
-/*1d*/M2, 115, 124, M, 75, M, M, M3, 61, M, M4, M, M4, M, M, M,
-/*1e*/M, 123, 122, M4, 121, M4, M, M3, 117, M2, M2, M3, M4, M3, M, M,
-/*1f*/111, M, M, M, M4, M3, M3, M, M, M, M3, M, M3, M2, M, M
-};
-static unsigned char cheetah_mtag_syntab[] = {
- NONE, MTC0,
- MTC1, NONE,
- MTC2, NONE,
- NONE, MT0,
- MTC3, NONE,
- NONE, MT1,
- NONE, MT2,
- NONE, NONE
-};
-
-/* Return the highest priority error conditon mentioned. */
-static inline unsigned long cheetah_get_hipri(unsigned long afsr)
-{
- unsigned long tmp = 0;
- int i;
-
- for (i = 0; cheetah_error_table[i].mask; i++) {
- if ((tmp = (afsr & cheetah_error_table[i].mask)) != 0UL)
- return tmp;
- }
- return tmp;
-}
-
-static const char *cheetah_get_string(unsigned long bit)
-{
- int i;
-
- for (i = 0; cheetah_error_table[i].mask; i++) {
- if ((bit & cheetah_error_table[i].mask) != 0UL)
- return cheetah_error_table[i].name;
- }
- return "???";
-}
-
-static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *info,
- unsigned long afsr, unsigned long afar, int recoverable)
-{
- unsigned long hipri;
- char unum[256];
-
- printk("%s" "ERROR(%d): Cheetah error trap taken afsr[%016lx] afar[%016lx] TL1(%d)\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- afsr, afar,
- (afsr & CHAFSR_TL1) ? 1 : 0);
- printk("%s" "ERROR(%d): TPC[%lx] TNPC[%lx] O7[%lx] TSTATE[%lx]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- regs->tpc, regs->tnpc, regs->u_regs[UREG_I7], regs->tstate);
- printk("%s" "ERROR(%d): ",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id());
- printk("TPC<%pS>\n", (void *) regs->tpc);
- printk("%s" "ERROR(%d): M_SYND(%lx), E_SYND(%lx)%s%s\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT,
- (afsr & CHAFSR_E_SYNDROME) >> CHAFSR_E_SYNDROME_SHIFT,
- (afsr & CHAFSR_ME) ? ", Multiple Errors" : "",
- (afsr & CHAFSR_PRIV) ? ", Privileged" : "");
- hipri = cheetah_get_hipri(afsr);
- printk("%s" "ERROR(%d): Highest priority error (%016lx) \"%s\"\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- hipri, cheetah_get_string(hipri));
-
- /* Try to get unumber if relevant. */
-#define ESYND_ERRORS (CHAFSR_IVC | CHAFSR_IVU | \
- CHAFSR_CPC | CHAFSR_CPU | \
- CHAFSR_UE | CHAFSR_CE | \
- CHAFSR_EDC | CHAFSR_EDU | \
- CHAFSR_UCC | CHAFSR_UCU | \
- CHAFSR_WDU | CHAFSR_WDC)
-#define MSYND_ERRORS (CHAFSR_EMC | CHAFSR_EMU)
- if (afsr & ESYND_ERRORS) {
- int syndrome;
- int ret;
-
- syndrome = (afsr & CHAFSR_E_SYNDROME) >> CHAFSR_E_SYNDROME_SHIFT;
- syndrome = cheetah_ecc_syntab[syndrome];
- ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum));
- if (ret != -1)
- printk("%s" "ERROR(%d): AFAR E-syndrome [%s]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT),
- smp_processor_id(), unum);
- } else if (afsr & MSYND_ERRORS) {
- int syndrome;
- int ret;
-
- syndrome = (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT;
- syndrome = cheetah_mtag_syntab[syndrome];
- ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum));
- if (ret != -1)
- printk("%s" "ERROR(%d): AFAR M-syndrome [%s]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT),
- smp_processor_id(), unum);
- }
-
- /* Now dump the cache snapshots. */
- printk("%s" "ERROR(%d): D-cache idx[%x] tag[%016lx] utag[%016lx] stag[%016lx]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- (int) info->dcache_index,
- info->dcache_tag,
- info->dcache_utag,
- info->dcache_stag);
- printk("%s" "ERROR(%d): D-cache data0[%016lx] data1[%016lx] data2[%016lx] data3[%016lx]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- info->dcache_data[0],
- info->dcache_data[1],
- info->dcache_data[2],
- info->dcache_data[3]);
- printk("%s" "ERROR(%d): I-cache idx[%x] tag[%016lx] utag[%016lx] stag[%016lx] "
- "u[%016lx] l[%016lx]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- (int) info->icache_index,
- info->icache_tag,
- info->icache_utag,
- info->icache_stag,
- info->icache_upper,
- info->icache_lower);
- printk("%s" "ERROR(%d): I-cache INSN0[%016lx] INSN1[%016lx] INSN2[%016lx] INSN3[%016lx]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- info->icache_data[0],
- info->icache_data[1],
- info->icache_data[2],
- info->icache_data[3]);
- printk("%s" "ERROR(%d): I-cache INSN4[%016lx] INSN5[%016lx] INSN6[%016lx] INSN7[%016lx]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- info->icache_data[4],
- info->icache_data[5],
- info->icache_data[6],
- info->icache_data[7]);
- printk("%s" "ERROR(%d): E-cache idx[%x] tag[%016lx]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- (int) info->ecache_index, info->ecache_tag);
- printk("%s" "ERROR(%d): E-cache data0[%016lx] data1[%016lx] data2[%016lx] data3[%016lx]\n",
- (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
- info->ecache_data[0],
- info->ecache_data[1],
- info->ecache_data[2],
- info->ecache_data[3]);
-
- afsr = (afsr & ~hipri) & cheetah_afsr_errors;
- while (afsr != 0UL) {
- unsigned long bit = cheetah_get_hipri(afsr);
-
- printk("%s" "ERROR: Multiple-error (%016lx) \"%s\"\n",
- (recoverable ? KERN_WARNING : KERN_CRIT),
- bit, cheetah_get_string(bit));
-
- afsr &= ~bit;
- }
-
- if (!recoverable)
- printk(KERN_CRIT "ERROR: This condition is not recoverable.\n");
-}
-
-static int cheetah_recheck_errors(struct cheetah_err_info *logp)
-{
- unsigned long afsr, afar;
- int ret = 0;
-
- __asm__ __volatile__("ldxa [%%g0] %1, %0\n\t"
- : "=r" (afsr)
- : "i" (ASI_AFSR));
- if ((afsr & cheetah_afsr_errors) != 0) {
- if (logp != NULL) {
- __asm__ __volatile__("ldxa [%%g0] %1, %0\n\t"
- : "=r" (afar)
- : "i" (ASI_AFAR));
- logp->afsr = afsr;
- logp->afar = afar;
- }
- ret = 1;
- }
- __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
- "membar #Sync\n\t"
- : : "r" (afsr), "i" (ASI_AFSR));
-
- return ret;
-}
-
-void cheetah_fecc_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
-{
- struct cheetah_err_info local_snapshot, *p;
- int recoverable;
-
- /* Flush E-cache */
- cheetah_flush_ecache();
-
- p = cheetah_get_error_log(afsr);
- if (!p) {
- prom_printf("ERROR: Early Fast-ECC error afsr[%016lx] afar[%016lx]\n",
- afsr, afar);
- prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n",
- smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate);
- prom_halt();
- }
-
- /* Grab snapshot of logged error. */
- memcpy(&local_snapshot, p, sizeof(local_snapshot));
-
- /* If the current trap snapshot does not match what the
- * trap handler passed along into our args, big trouble.
- * In such a case, mark the local copy as invalid.
- *
- * Else, it matches and we mark the afsr in the non-local
- * copy as invalid so we may log new error traps there.
- */
- if (p->afsr != afsr || p->afar != afar)
- local_snapshot.afsr = CHAFSR_INVALID;
- else
- p->afsr = CHAFSR_INVALID;
-
- cheetah_flush_icache();
- cheetah_flush_dcache();
-
- /* Re-enable I-cache/D-cache */
- __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
- "or %%g1, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "i" (ASI_DCU_CONTROL_REG),
- "i" (DCU_DC | DCU_IC)
- : "g1");
-
- /* Re-enable error reporting */
- __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
- "or %%g1, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "i" (ASI_ESTATE_ERROR_EN),
- "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN)
- : "g1");
-
- /* Decide if we can continue after handling this trap and
- * logging the error.
- */
- recoverable = 1;
- if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP))
- recoverable = 0;
-
- /* Re-check AFSR/AFAR. What we are looking for here is whether a new
- * error was logged while we had error reporting traps disabled.
- */
- if (cheetah_recheck_errors(&local_snapshot)) {
- unsigned long new_afsr = local_snapshot.afsr;
-
- /* If we got a new asynchronous error, die... */
- if (new_afsr & (CHAFSR_EMU | CHAFSR_EDU |
- CHAFSR_WDU | CHAFSR_CPU |
- CHAFSR_IVU | CHAFSR_UE |
- CHAFSR_BERR | CHAFSR_TO))
- recoverable = 0;
- }
-
- /* Log errors. */
- cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable);
-
- if (!recoverable)
- panic("Irrecoverable Fast-ECC error trap.\n");
-
- /* Flush E-cache to kick the error trap handlers out. */
- cheetah_flush_ecache();
-}
-
-/* Try to fix a correctable error by pushing the line out from
- * the E-cache. Recheck error reporting registers to see if the
- * problem is intermittent.
- */
-static int cheetah_fix_ce(unsigned long physaddr)
-{
- unsigned long orig_estate;
- unsigned long alias1, alias2;
- int ret;
-
- /* Make sure correctable error traps are disabled. */
- __asm__ __volatile__("ldxa [%%g0] %2, %0\n\t"
- "andn %0, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %2\n\t"
- "membar #Sync"
- : "=&r" (orig_estate)
- : "i" (ESTATE_ERROR_CEEN),
- "i" (ASI_ESTATE_ERROR_EN)
- : "g1");
-
- /* We calculate alias addresses that will force the
- * cache line in question out of the E-cache. Then
- * we bring it back in with an atomic instruction so
- * that we get it in some modified/exclusive state,
- * then we displace it again to try and get proper ECC
- * pushed back into the system.
- */
- physaddr &= ~(8UL - 1UL);
- alias1 = (ecache_flush_physbase +
- (physaddr & ((ecache_flush_size >> 1) - 1)));
- alias2 = alias1 + (ecache_flush_size >> 1);
- __asm__ __volatile__("ldxa [%0] %3, %%g0\n\t"
- "ldxa [%1] %3, %%g0\n\t"
- "casxa [%2] %3, %%g0, %%g0\n\t"
- "ldxa [%0] %3, %%g0\n\t"
- "ldxa [%1] %3, %%g0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (alias1), "r" (alias2),
- "r" (physaddr), "i" (ASI_PHYS_USE_EC));
-
- /* Did that trigger another error? */
- if (cheetah_recheck_errors(NULL)) {
- /* Try one more time. */
- __asm__ __volatile__("ldxa [%0] %1, %%g0\n\t"
- "membar #Sync"
- : : "r" (physaddr), "i" (ASI_PHYS_USE_EC));
- if (cheetah_recheck_errors(NULL))
- ret = 2;
- else
- ret = 1;
- } else {
- /* No new error, intermittent problem. */
- ret = 0;
- }
-
- /* Restore error enables. */
- __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
- "membar #Sync"
- : : "r" (orig_estate), "i" (ASI_ESTATE_ERROR_EN));
-
- return ret;
-}
-
-/* Return non-zero if PADDR is a valid physical memory address. */
-static int cheetah_check_main_memory(unsigned long paddr)
-{
- unsigned long vaddr = PAGE_OFFSET + paddr;
-
- if (vaddr > (unsigned long) high_memory)
- return 0;
-
- return kern_addr_valid(vaddr);
-}
-
-void cheetah_cee_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
-{
- struct cheetah_err_info local_snapshot, *p;
- int recoverable, is_memory;
-
- p = cheetah_get_error_log(afsr);
- if (!p) {
- prom_printf("ERROR: Early CEE error afsr[%016lx] afar[%016lx]\n",
- afsr, afar);
- prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n",
- smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate);
- prom_halt();
- }
-
- /* Grab snapshot of logged error. */
- memcpy(&local_snapshot, p, sizeof(local_snapshot));
-
- /* If the current trap snapshot does not match what the
- * trap handler passed along into our args, big trouble.
- * In such a case, mark the local copy as invalid.
- *
- * Else, it matches and we mark the afsr in the non-local
- * copy as invalid so we may log new error traps there.
- */
- if (p->afsr != afsr || p->afar != afar)
- local_snapshot.afsr = CHAFSR_INVALID;
- else
- p->afsr = CHAFSR_INVALID;
-
- is_memory = cheetah_check_main_memory(afar);
-
- if (is_memory && (afsr & CHAFSR_CE) != 0UL) {
- /* XXX Might want to log the results of this operation
- * XXX somewhere... -DaveM
- */
- cheetah_fix_ce(afar);
- }
-
- {
- int flush_all, flush_line;
-
- flush_all = flush_line = 0;
- if ((afsr & CHAFSR_EDC) != 0UL) {
- if ((afsr & cheetah_afsr_errors) == CHAFSR_EDC)
- flush_line = 1;
- else
- flush_all = 1;
- } else if ((afsr & CHAFSR_CPC) != 0UL) {
- if ((afsr & cheetah_afsr_errors) == CHAFSR_CPC)
- flush_line = 1;
- else
- flush_all = 1;
- }
-
- /* Trap handler only disabled I-cache, flush it. */
- cheetah_flush_icache();
-
- /* Re-enable I-cache */
- __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
- "or %%g1, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "i" (ASI_DCU_CONTROL_REG),
- "i" (DCU_IC)
- : "g1");
-
- if (flush_all)
- cheetah_flush_ecache();
- else if (flush_line)
- cheetah_flush_ecache_line(afar);
- }
-
- /* Re-enable error reporting */
- __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
- "or %%g1, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "i" (ASI_ESTATE_ERROR_EN),
- "i" (ESTATE_ERROR_CEEN)
- : "g1");
-
- /* Decide if we can continue after handling this trap and
- * logging the error.
- */
- recoverable = 1;
- if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP))
- recoverable = 0;
-
- /* Re-check AFSR/AFAR */
- (void) cheetah_recheck_errors(&local_snapshot);
-
- /* Log errors. */
- cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable);
-
- if (!recoverable)
- panic("Irrecoverable Correctable-ECC error trap.\n");
-}
-
-void cheetah_deferred_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
-{
- struct cheetah_err_info local_snapshot, *p;
- int recoverable, is_memory;
-
-#ifdef CONFIG_PCI
- /* Check for the special PCI poke sequence. */
- if (pci_poke_in_progress && pci_poke_cpu == smp_processor_id()) {
- cheetah_flush_icache();
- cheetah_flush_dcache();
-
- /* Re-enable I-cache/D-cache */
- __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
- "or %%g1, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "i" (ASI_DCU_CONTROL_REG),
- "i" (DCU_DC | DCU_IC)
- : "g1");
-
- /* Re-enable error reporting */
- __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
- "or %%g1, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "i" (ASI_ESTATE_ERROR_EN),
- "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN)
- : "g1");
-
- (void) cheetah_recheck_errors(NULL);
-
- pci_poke_faulted = 1;
- regs->tpc += 4;
- regs->tnpc = regs->tpc + 4;
- return;
- }
-#endif
-
- p = cheetah_get_error_log(afsr);
- if (!p) {
- prom_printf("ERROR: Early deferred error afsr[%016lx] afar[%016lx]\n",
- afsr, afar);
- prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n",
- smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate);
- prom_halt();
- }
-
- /* Grab snapshot of logged error. */
- memcpy(&local_snapshot, p, sizeof(local_snapshot));
-
- /* If the current trap snapshot does not match what the
- * trap handler passed along into our args, big trouble.
- * In such a case, mark the local copy as invalid.
- *
- * Else, it matches and we mark the afsr in the non-local
- * copy as invalid so we may log new error traps there.
- */
- if (p->afsr != afsr || p->afar != afar)
- local_snapshot.afsr = CHAFSR_INVALID;
- else
- p->afsr = CHAFSR_INVALID;
-
- is_memory = cheetah_check_main_memory(afar);
-
- {
- int flush_all, flush_line;
-
- flush_all = flush_line = 0;
- if ((afsr & CHAFSR_EDU) != 0UL) {
- if ((afsr & cheetah_afsr_errors) == CHAFSR_EDU)
- flush_line = 1;
- else
- flush_all = 1;
- } else if ((afsr & CHAFSR_BERR) != 0UL) {
- if ((afsr & cheetah_afsr_errors) == CHAFSR_BERR)
- flush_line = 1;
- else
- flush_all = 1;
- }
-
- cheetah_flush_icache();
- cheetah_flush_dcache();
-
- /* Re-enable I/D caches */
- __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
- "or %%g1, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "i" (ASI_DCU_CONTROL_REG),
- "i" (DCU_IC | DCU_DC)
- : "g1");
-
- if (flush_all)
- cheetah_flush_ecache();
- else if (flush_line)
- cheetah_flush_ecache_line(afar);
- }
-
- /* Re-enable error reporting */
- __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
- "or %%g1, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "i" (ASI_ESTATE_ERROR_EN),
- "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN)
- : "g1");
-
- /* Decide if we can continue after handling this trap and
- * logging the error.
- */
- recoverable = 1;
- if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP))
- recoverable = 0;
-
- /* Re-check AFSR/AFAR. What we are looking for here is whether a new
- * error was logged while we had error reporting traps disabled.
- */
- if (cheetah_recheck_errors(&local_snapshot)) {
- unsigned long new_afsr = local_snapshot.afsr;
-
- /* If we got a new asynchronous error, die... */
- if (new_afsr & (CHAFSR_EMU | CHAFSR_EDU |
- CHAFSR_WDU | CHAFSR_CPU |
- CHAFSR_IVU | CHAFSR_UE |
- CHAFSR_BERR | CHAFSR_TO))
- recoverable = 0;
- }
-
- /* Log errors. */
- cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable);
-
- /* "Recoverable" here means we try to yank the page from ever
- * being newly used again. This depends upon a few things:
- * 1) Must be main memory, and AFAR must be valid.
- * 2) If we trapped from user, OK.
- * 3) Else, if we trapped from kernel we must find exception
- * table entry (ie. we have to have been accessing user
- * space).
- *
- * If AFAR is not in main memory, or we trapped from kernel
- * and cannot find an exception table entry, it is unacceptable
- * to try and continue.
- */
- if (recoverable && is_memory) {
- if ((regs->tstate & TSTATE_PRIV) == 0UL) {
- /* OK, usermode access. */
- recoverable = 1;
- } else {
- const struct exception_table_entry *entry;
-
- entry = search_exception_tables(regs->tpc);
- if (entry) {
- /* OK, kernel access to userspace. */
- recoverable = 1;
-
- } else {
- /* BAD, privileged state is corrupted. */
- recoverable = 0;
- }
-
- if (recoverable) {
- if (pfn_valid(afar >> PAGE_SHIFT))
- get_page(pfn_to_page(afar >> PAGE_SHIFT));
- else
- recoverable = 0;
-
- /* Only perform fixup if we still have a
- * recoverable condition.
- */
- if (recoverable) {
- regs->tpc = entry->fixup;
- regs->tnpc = regs->tpc + 4;
- }
- }
- }
- } else {
- recoverable = 0;
- }
-
- if (!recoverable)
- panic("Irrecoverable deferred error trap.\n");
-}
-
-/* Handle a D/I cache parity error trap. TYPE is encoded as:
- *
- * Bit0: 0=dcache,1=icache
- * Bit1: 0=recoverable,1=unrecoverable
- *
- * The hardware has disabled both the I-cache and D-cache in
- * the %dcr register.
- */
-void cheetah_plus_parity_error(int type, struct pt_regs *regs)
-{
- if (type & 0x1)
- __cheetah_flush_icache();
- else
- cheetah_plus_zap_dcache_parity();
- cheetah_flush_dcache();
-
- /* Re-enable I-cache/D-cache */
- __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
- "or %%g1, %1, %%g1\n\t"
- "stxa %%g1, [%%g0] %0\n\t"
- "membar #Sync"
- : /* no outputs */
- : "i" (ASI_DCU_CONTROL_REG),
- "i" (DCU_DC | DCU_IC)
- : "g1");
-
- if (type & 0x2) {
- printk(KERN_EMERG "CPU[%d]: Cheetah+ %c-cache parity error at TPC[%016lx]\n",
- smp_processor_id(),
- (type & 0x1) ? 'I' : 'D',
- regs->tpc);
- printk(KERN_EMERG "TPC<%pS>\n", (void *) regs->tpc);
- panic("Irrecoverable Cheetah+ parity error.");
- }
-
- printk(KERN_WARNING "CPU[%d]: Cheetah+ %c-cache parity error at TPC[%016lx]\n",
- smp_processor_id(),
- (type & 0x1) ? 'I' : 'D',
- regs->tpc);
- printk(KERN_WARNING "TPC<%pS>\n", (void *) regs->tpc);
-}
-
-struct sun4v_error_entry {
- u64 err_handle;
- u64 err_stick;
-
- u32 err_type;
-#define SUN4V_ERR_TYPE_UNDEFINED 0
-#define SUN4V_ERR_TYPE_UNCORRECTED_RES 1
-#define SUN4V_ERR_TYPE_PRECISE_NONRES 2
-#define SUN4V_ERR_TYPE_DEFERRED_NONRES 3
-#define SUN4V_ERR_TYPE_WARNING_RES 4
-
- u32 err_attrs;
-#define SUN4V_ERR_ATTRS_PROCESSOR 0x00000001
-#define SUN4V_ERR_ATTRS_MEMORY 0x00000002
-#define SUN4V_ERR_ATTRS_PIO 0x00000004
-#define SUN4V_ERR_ATTRS_INT_REGISTERS 0x00000008
-#define SUN4V_ERR_ATTRS_FPU_REGISTERS 0x00000010
-#define SUN4V_ERR_ATTRS_USER_MODE 0x01000000
-#define SUN4V_ERR_ATTRS_PRIV_MODE 0x02000000
-#define SUN4V_ERR_ATTRS_RES_QUEUE_FULL 0x80000000
-
- u64 err_raddr;
- u32 err_size;
- u16 err_cpu;
- u16 err_pad;
-};
-
-static atomic_t sun4v_resum_oflow_cnt = ATOMIC_INIT(0);
-static atomic_t sun4v_nonresum_oflow_cnt = ATOMIC_INIT(0);
-
-static const char *sun4v_err_type_to_str(u32 type)
-{
- switch (type) {
- case SUN4V_ERR_TYPE_UNDEFINED:
- return "undefined";
- case SUN4V_ERR_TYPE_UNCORRECTED_RES:
- return "uncorrected resumable";
- case SUN4V_ERR_TYPE_PRECISE_NONRES:
- return "precise nonresumable";
- case SUN4V_ERR_TYPE_DEFERRED_NONRES:
- return "deferred nonresumable";
- case SUN4V_ERR_TYPE_WARNING_RES:
- return "warning resumable";
- default:
- return "unknown";
- };
-}
-
-static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent, int cpu, const char *pfx, atomic_t *ocnt)
-{
- int cnt;
-
- printk("%s: Reporting on cpu %d\n", pfx, cpu);
- printk("%s: err_handle[%lx] err_stick[%lx] err_type[%08x:%s]\n",
- pfx,
- ent->err_handle, ent->err_stick,
- ent->err_type,
- sun4v_err_type_to_str(ent->err_type));
- printk("%s: err_attrs[%08x:%s %s %s %s %s %s %s %s]\n",
- pfx,
- ent->err_attrs,
- ((ent->err_attrs & SUN4V_ERR_ATTRS_PROCESSOR) ?
- "processor" : ""),
- ((ent->err_attrs & SUN4V_ERR_ATTRS_MEMORY) ?
- "memory" : ""),
- ((ent->err_attrs & SUN4V_ERR_ATTRS_PIO) ?
- "pio" : ""),
- ((ent->err_attrs & SUN4V_ERR_ATTRS_INT_REGISTERS) ?
- "integer-regs" : ""),
- ((ent->err_attrs & SUN4V_ERR_ATTRS_FPU_REGISTERS) ?
- "fpu-regs" : ""),
- ((ent->err_attrs & SUN4V_ERR_ATTRS_USER_MODE) ?
- "user" : ""),
- ((ent->err_attrs & SUN4V_ERR_ATTRS_PRIV_MODE) ?
- "privileged" : ""),
- ((ent->err_attrs & SUN4V_ERR_ATTRS_RES_QUEUE_FULL) ?
- "queue-full" : ""));
- printk("%s: err_raddr[%016lx] err_size[%u] err_cpu[%u]\n",
- pfx,
- ent->err_raddr, ent->err_size, ent->err_cpu);
-
- show_regs(regs);
-
- if ((cnt = atomic_read(ocnt)) != 0) {
- atomic_set(ocnt, 0);
- wmb();
- printk("%s: Queue overflowed %d times.\n",
- pfx, cnt);
- }
-}
-
-/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
- * Log the event and clear the first word of the entry.
- */
-void sun4v_resum_error(struct pt_regs *regs, unsigned long offset)
-{
- struct sun4v_error_entry *ent, local_copy;
- struct trap_per_cpu *tb;
- unsigned long paddr;
- int cpu;
-
- cpu = get_cpu();
-
- tb = &trap_block[cpu];
- paddr = tb->resum_kernel_buf_pa + offset;
- ent = __va(paddr);
-
- memcpy(&local_copy, ent, sizeof(struct sun4v_error_entry));
-
- /* We have a local copy now, so release the entry. */
- ent->err_handle = 0;
- wmb();
-
- put_cpu();
-
- if (ent->err_type == SUN4V_ERR_TYPE_WARNING_RES) {
- /* If err_type is 0x4, it's a powerdown request. Do
- * not do the usual resumable error log because that
- * makes it look like some abnormal error.
- */
- printk(KERN_INFO "Power down request...\n");
- kill_cad_pid(SIGINT, 1);
- return;
- }
-
- sun4v_log_error(regs, &local_copy, cpu,
- KERN_ERR "RESUMABLE ERROR",
- &sun4v_resum_oflow_cnt);
-}
-
-/* If we try to printk() we'll probably make matters worse, by trying
- * to retake locks this cpu already holds or causing more errors. So
- * just bump a counter, and we'll report these counter bumps above.
- */
-void sun4v_resum_overflow(struct pt_regs *regs)
-{
- atomic_inc(&sun4v_resum_oflow_cnt);
-}
-
-/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
- * Log the event, clear the first word of the entry, and die.
- */
-void sun4v_nonresum_error(struct pt_regs *regs, unsigned long offset)
-{
- struct sun4v_error_entry *ent, local_copy;
- struct trap_per_cpu *tb;
- unsigned long paddr;
- int cpu;
-
- cpu = get_cpu();
-
- tb = &trap_block[cpu];
- paddr = tb->nonresum_kernel_buf_pa + offset;
- ent = __va(paddr);
-
- memcpy(&local_copy, ent, sizeof(struct sun4v_error_entry));
-
- /* We have a local copy now, so release the entry. */
- ent->err_handle = 0;
- wmb();
-
- put_cpu();
-
-#ifdef CONFIG_PCI
- /* Check for the special PCI poke sequence. */
- if (pci_poke_in_progress && pci_poke_cpu == cpu) {
- pci_poke_faulted = 1;
- regs->tpc += 4;
- regs->tnpc = regs->tpc + 4;
- return;
- }
-#endif
-
- sun4v_log_error(regs, &local_copy, cpu,
- KERN_EMERG "NON-RESUMABLE ERROR",
- &sun4v_nonresum_oflow_cnt);
-
- panic("Non-resumable error.");
-}
-
-/* If we try to printk() we'll probably make matters worse, by trying
- * to retake locks this cpu already holds or causing more errors. So
- * just bump a counter, and we'll report these counter bumps above.
- */
-void sun4v_nonresum_overflow(struct pt_regs *regs)
-{
- /* XXX Actually even this can make not that much sense. Perhaps
- * XXX we should just pull the plug and panic directly from here?
- */
- atomic_inc(&sun4v_nonresum_oflow_cnt);
-}
-
-unsigned long sun4v_err_itlb_vaddr;
-unsigned long sun4v_err_itlb_ctx;
-unsigned long sun4v_err_itlb_pte;
-unsigned long sun4v_err_itlb_error;
-
-void sun4v_itlb_error_report(struct pt_regs *regs, int tl)
-{
- if (tl > 1)
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
-
- printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n",
- regs->tpc, tl);
- printk(KERN_EMERG "SUN4V-ITLB: TPC<%pS>\n", (void *) regs->tpc);
- printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
- printk(KERN_EMERG "SUN4V-ITLB: O7<%pS>\n",
- (void *) regs->u_regs[UREG_I7]);
- printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] "
- "pte[%lx] error[%lx]\n",
- sun4v_err_itlb_vaddr, sun4v_err_itlb_ctx,
- sun4v_err_itlb_pte, sun4v_err_itlb_error);
-
- prom_halt();
-}
-
-unsigned long sun4v_err_dtlb_vaddr;
-unsigned long sun4v_err_dtlb_ctx;
-unsigned long sun4v_err_dtlb_pte;
-unsigned long sun4v_err_dtlb_error;
-
-void sun4v_dtlb_error_report(struct pt_regs *regs, int tl)
-{
- if (tl > 1)
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
-
- printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n",
- regs->tpc, tl);
- printk(KERN_EMERG "SUN4V-DTLB: TPC<%pS>\n", (void *) regs->tpc);
- printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
- printk(KERN_EMERG "SUN4V-DTLB: O7<%pS>\n",
- (void *) regs->u_regs[UREG_I7]);
- printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] "
- "pte[%lx] error[%lx]\n",
- sun4v_err_dtlb_vaddr, sun4v_err_dtlb_ctx,
- sun4v_err_dtlb_pte, sun4v_err_dtlb_error);
-
- prom_halt();
-}
-
-void hypervisor_tlbop_error(unsigned long err, unsigned long op)
-{
- printk(KERN_CRIT "SUN4V: TLB hv call error %lu for op %lu\n",
- err, op);
-}
-
-void hypervisor_tlbop_error_xcall(unsigned long err, unsigned long op)
-{
- printk(KERN_CRIT "SUN4V: XCALL TLB hv call error %lu for op %lu\n",
- err, op);
-}
-
-void do_fpe_common(struct pt_regs *regs)
-{
- if (regs->tstate & TSTATE_PRIV) {
- regs->tpc = regs->tnpc;
- regs->tnpc += 4;
- } else {
- unsigned long fsr = current_thread_info()->xfsr[0];
- siginfo_t info;
-
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_addr = (void __user *)regs->tpc;
- info.si_trapno = 0;
- info.si_code = __SI_FAULT;
- if ((fsr & 0x1c000) == (1 << 14)) {
- if (fsr & 0x10)
- info.si_code = FPE_FLTINV;
- else if (fsr & 0x08)
- info.si_code = FPE_FLTOVF;
- else if (fsr & 0x04)
- info.si_code = FPE_FLTUND;
- else if (fsr & 0x02)
- info.si_code = FPE_FLTDIV;
- else if (fsr & 0x01)
- info.si_code = FPE_FLTRES;
- }
- force_sig_info(SIGFPE, &info, current);
- }
-}
-
-void do_fpieee(struct pt_regs *regs)
-{
- if (notify_die(DIE_TRAP, "fpu exception ieee", regs,
- 0, 0x24, SIGFPE) == NOTIFY_STOP)
- return;
-
- do_fpe_common(regs);
-}
-
-extern int do_mathemu(struct pt_regs *, struct fpustate *);
-
-void do_fpother(struct pt_regs *regs)
-{
- struct fpustate *f = FPUSTATE;
- int ret = 0;
-
- if (notify_die(DIE_TRAP, "fpu exception other", regs,
- 0, 0x25, SIGFPE) == NOTIFY_STOP)
- return;
-
- switch ((current_thread_info()->xfsr[0] & 0x1c000)) {
- case (2 << 14): /* unfinished_FPop */
- case (3 << 14): /* unimplemented_FPop */
- ret = do_mathemu(regs, f);
- break;
- }
- if (ret)
- return;
- do_fpe_common(regs);
-}
-
-void do_tof(struct pt_regs *regs)
-{
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "tagged arithmetic overflow", regs,
- 0, 0x26, SIGEMT) == NOTIFY_STOP)
- return;
-
- if (regs->tstate & TSTATE_PRIV)
- die_if_kernel("Penguin overflow trap from kernel mode", regs);
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- info.si_signo = SIGEMT;
- info.si_errno = 0;
- info.si_code = EMT_TAGOVF;
- info.si_addr = (void __user *)regs->tpc;
- info.si_trapno = 0;
- force_sig_info(SIGEMT, &info, current);
-}
-
-void do_div0(struct pt_regs *regs)
-{
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "integer division by zero", regs,
- 0, 0x28, SIGFPE) == NOTIFY_STOP)
- return;
-
- if (regs->tstate & TSTATE_PRIV)
- die_if_kernel("TL0: Kernel divide by zero.", regs);
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_code = FPE_INTDIV;
- info.si_addr = (void __user *)regs->tpc;
- info.si_trapno = 0;
- force_sig_info(SIGFPE, &info, current);
-}
-
-static void instruction_dump(unsigned int *pc)
-{
- int i;
-
- if ((((unsigned long) pc) & 3))
- return;
-
- printk("Instruction DUMP:");
- for (i = -3; i < 6; i++)
- printk("%c%08x%c",i?' ':'<',pc[i],i?' ':'>');
- printk("\n");
-}
-
-static void user_instruction_dump(unsigned int __user *pc)
-{
- int i;
- unsigned int buf[9];
-
- if ((((unsigned long) pc) & 3))
- return;
-
- if (copy_from_user(buf, pc - 3, sizeof(buf)))
- return;
-
- printk("Instruction DUMP:");
- for (i = 0; i < 9; i++)
- printk("%c%08x%c",i==3?' ':'<',buf[i],i==3?' ':'>');
- printk("\n");
-}
-
-void show_stack(struct task_struct *tsk, unsigned long *_ksp)
-{
- unsigned long fp, thread_base, ksp;
- struct thread_info *tp;
- int count = 0;
-
- ksp = (unsigned long) _ksp;
- if (!tsk)
- tsk = current;
- tp = task_thread_info(tsk);
- if (ksp == 0UL) {
- if (tsk == current)
- asm("mov %%fp, %0" : "=r" (ksp));
- else
- ksp = tp->ksp;
- }
- if (tp == current_thread_info())
- flushw_all();
-
- fp = ksp + STACK_BIAS;
- thread_base = (unsigned long) tp;
-
- printk("Call Trace:\n");
- do {
- struct sparc_stackf *sf;
- struct pt_regs *regs;
- unsigned long pc;
-
- if (!kstack_valid(tp, fp))
- break;
- sf = (struct sparc_stackf *) fp;
- regs = (struct pt_regs *) (sf + 1);
-
- if (kstack_is_trap_frame(tp, regs)) {
- if (!(regs->tstate & TSTATE_PRIV))
- break;
- pc = regs->tpc;
- fp = regs->u_regs[UREG_I6] + STACK_BIAS;
- } else {
- pc = sf->callers_pc;
- fp = (unsigned long)sf->fp + STACK_BIAS;
- }
-
- printk(" [%016lx] %pS\n", pc, (void *) pc);
- } while (++count < 16);
-}
-
-void dump_stack(void)
-{
- show_stack(current, NULL);
-}
-
-EXPORT_SYMBOL(dump_stack);
-
-static inline int is_kernel_stack(struct task_struct *task,
- struct reg_window *rw)
-{
- unsigned long rw_addr = (unsigned long) rw;
- unsigned long thread_base, thread_end;
-
- if (rw_addr < PAGE_OFFSET) {
- if (task != &init_task)
- return 0;
- }
-
- thread_base = (unsigned long) task_stack_page(task);
- thread_end = thread_base + sizeof(union thread_union);
- if (rw_addr >= thread_base &&
- rw_addr < thread_end &&
- !(rw_addr & 0x7UL))
- return 1;
-
- return 0;
-}
-
-static inline struct reg_window *kernel_stack_up(struct reg_window *rw)
-{
- unsigned long fp = rw->ins[6];
-
- if (!fp)
- return NULL;
-
- return (struct reg_window *) (fp + STACK_BIAS);
-}
-
-void die_if_kernel(char *str, struct pt_regs *regs)
-{
- static int die_counter;
- int count = 0;
-
- /* Amuse the user. */
- printk(
-" \\|/ ____ \\|/\n"
-" \"@'/ .. \\`@\"\n"
-" /_| \\__/ |_\\\n"
-" \\__U_/\n");
-
- printk("%s(%d): %s [#%d]\n", current->comm, task_pid_nr(current), str, ++die_counter);
- notify_die(DIE_OOPS, str, regs, 0, 255, SIGSEGV);
- __asm__ __volatile__("flushw");
- show_regs(regs);
- add_taint(TAINT_DIE);
- if (regs->tstate & TSTATE_PRIV) {
- struct reg_window *rw = (struct reg_window *)
- (regs->u_regs[UREG_FP] + STACK_BIAS);
-
- /* Stop the back trace when we hit userland or we
- * find some badly aligned kernel stack.
- */
- while (rw &&
- count++ < 30&&
- is_kernel_stack(current, rw)) {
- printk("Caller[%016lx]: %pS\n", rw->ins[7],
- (void *) rw->ins[7]);
-
- rw = kernel_stack_up(rw);
- }
- instruction_dump ((unsigned int *) regs->tpc);
- } else {
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- user_instruction_dump ((unsigned int __user *) regs->tpc);
- }
- if (regs->tstate & TSTATE_PRIV)
- do_exit(SIGKILL);
- do_exit(SIGSEGV);
-}
-
-#define VIS_OPCODE_MASK ((0x3 << 30) | (0x3f << 19))
-#define VIS_OPCODE_VAL ((0x2 << 30) | (0x36 << 19))
-
-extern int handle_popc(u32 insn, struct pt_regs *regs);
-extern int handle_ldf_stq(u32 insn, struct pt_regs *regs);
-
-void do_illegal_instruction(struct pt_regs *regs)
-{
- unsigned long pc = regs->tpc;
- unsigned long tstate = regs->tstate;
- u32 insn;
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "illegal instruction", regs,
- 0, 0x10, SIGILL) == NOTIFY_STOP)
- return;
-
- if (tstate & TSTATE_PRIV)
- die_if_kernel("Kernel illegal instruction", regs);
- if (test_thread_flag(TIF_32BIT))
- pc = (u32)pc;
- if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
- if ((insn & 0xc1ffc000) == 0x81700000) /* POPC */ {
- if (handle_popc(insn, regs))
- return;
- } else if ((insn & 0xc1580000) == 0xc1100000) /* LDQ/STQ */ {
- if (handle_ldf_stq(insn, regs))
- return;
- } else if (tlb_type == hypervisor) {
- if ((insn & VIS_OPCODE_MASK) == VIS_OPCODE_VAL) {
- if (!vis_emul(regs, insn))
- return;
- } else {
- struct fpustate *f = FPUSTATE;
-
- /* XXX maybe verify XFSR bits like
- * XXX do_fpother() does?
- */
- if (do_mathemu(regs, f))
- return;
- }
- }
- }
- info.si_signo = SIGILL;
- info.si_errno = 0;
- info.si_code = ILL_ILLOPC;
- info.si_addr = (void __user *)pc;
- info.si_trapno = 0;
- force_sig_info(SIGILL, &info, current);
-}
-
-extern void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn);
-
-void mem_address_unaligned(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr)
-{
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "memory address unaligned", regs,
- 0, 0x34, SIGSEGV) == NOTIFY_STOP)
- return;
-
- if (regs->tstate & TSTATE_PRIV) {
- kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc));
- return;
- }
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_ADRALN;
- info.si_addr = (void __user *)sfar;
- info.si_trapno = 0;
- force_sig_info(SIGBUS, &info, current);
-}
-
-void sun4v_do_mna(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
-{
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "memory address unaligned", regs,
- 0, 0x34, SIGSEGV) == NOTIFY_STOP)
- return;
-
- if (regs->tstate & TSTATE_PRIV) {
- kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc));
- return;
- }
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_ADRALN;
- info.si_addr = (void __user *) addr;
- info.si_trapno = 0;
- force_sig_info(SIGBUS, &info, current);
-}
-
-void do_privop(struct pt_regs *regs)
-{
- siginfo_t info;
-
- if (notify_die(DIE_TRAP, "privileged operation", regs,
- 0, 0x11, SIGILL) == NOTIFY_STOP)
- return;
-
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- info.si_signo = SIGILL;
- info.si_errno = 0;
- info.si_code = ILL_PRVOPC;
- info.si_addr = (void __user *)regs->tpc;
- info.si_trapno = 0;
- force_sig_info(SIGILL, &info, current);
-}
-
-void do_privact(struct pt_regs *regs)
-{
- do_privop(regs);
-}
-
-/* Trap level 1 stuff or other traps we should never see... */
-void do_cee(struct pt_regs *regs)
-{
- die_if_kernel("TL0: Cache Error Exception", regs);
-}
-
-void do_cee_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: Cache Error Exception", regs);
-}
-
-void do_dae_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: Data Access Exception", regs);
-}
-
-void do_iae_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: Instruction Access Exception", regs);
-}
-
-void do_div0_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: DIV0 Exception", regs);
-}
-
-void do_fpdis_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: FPU Disabled", regs);
-}
-
-void do_fpieee_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: FPU IEEE Exception", regs);
-}
-
-void do_fpother_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: FPU Other Exception", regs);
-}
-
-void do_ill_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: Illegal Instruction Exception", regs);
-}
-
-void do_irq_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: IRQ Exception", regs);
-}
-
-void do_lddfmna_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: LDDF Exception", regs);
-}
-
-void do_stdfmna_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: STDF Exception", regs);
-}
-
-void do_paw(struct pt_regs *regs)
-{
- die_if_kernel("TL0: Phys Watchpoint Exception", regs);
-}
-
-void do_paw_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: Phys Watchpoint Exception", regs);
-}
-
-void do_vaw(struct pt_regs *regs)
-{
- die_if_kernel("TL0: Virt Watchpoint Exception", regs);
-}
-
-void do_vaw_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: Virt Watchpoint Exception", regs);
-}
-
-void do_tof_tl1(struct pt_regs *regs)
-{
- dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
- die_if_kernel("TL1: Tag Overflow Exception", regs);
-}
-
-void do_getpsr(struct pt_regs *regs)
-{
- regs->u_regs[UREG_I0] = tstate_to_psr(regs->tstate);
- regs->tpc = regs->tnpc;
- regs->tnpc += 4;
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
-}
-
-struct trap_per_cpu trap_block[NR_CPUS];
-
-/* This can get invoked before sched_init() so play it super safe
- * and use hard_smp_processor_id().
- */
-void notrace init_cur_cpu_trap(struct thread_info *t)
-{
- int cpu = hard_smp_processor_id();
- struct trap_per_cpu *p = &trap_block[cpu];
-
- p->thread = t;
- p->pgd_paddr = 0;
-}
-
-extern void thread_info_offsets_are_bolixed_dave(void);
-extern void trap_per_cpu_offsets_are_bolixed_dave(void);
-extern void tsb_config_offsets_are_bolixed_dave(void);
-
-/* Only invoked on boot processor. */
-void __init trap_init(void)
-{
- /* Compile time sanity check. */
- if (TI_TASK != offsetof(struct thread_info, task) ||
- TI_FLAGS != offsetof(struct thread_info, flags) ||
- TI_CPU != offsetof(struct thread_info, cpu) ||
- TI_FPSAVED != offsetof(struct thread_info, fpsaved) ||
- TI_KSP != offsetof(struct thread_info, ksp) ||
- TI_FAULT_ADDR != offsetof(struct thread_info, fault_address) ||
- TI_KREGS != offsetof(struct thread_info, kregs) ||
- TI_UTRAPS != offsetof(struct thread_info, utraps) ||
- TI_EXEC_DOMAIN != offsetof(struct thread_info, exec_domain) ||
- TI_REG_WINDOW != offsetof(struct thread_info, reg_window) ||
- TI_RWIN_SPTRS != offsetof(struct thread_info, rwbuf_stkptrs) ||
- TI_GSR != offsetof(struct thread_info, gsr) ||
- TI_XFSR != offsetof(struct thread_info, xfsr) ||
- TI_USER_CNTD0 != offsetof(struct thread_info, user_cntd0) ||
- TI_USER_CNTD1 != offsetof(struct thread_info, user_cntd1) ||
- TI_KERN_CNTD0 != offsetof(struct thread_info, kernel_cntd0) ||
- TI_KERN_CNTD1 != offsetof(struct thread_info, kernel_cntd1) ||
- TI_PCR != offsetof(struct thread_info, pcr_reg) ||
- TI_PRE_COUNT != offsetof(struct thread_info, preempt_count) ||
- TI_NEW_CHILD != offsetof(struct thread_info, new_child) ||
- TI_SYS_NOERROR != offsetof(struct thread_info, syscall_noerror) ||
- TI_RESTART_BLOCK != offsetof(struct thread_info, restart_block) ||
- TI_KUNA_REGS != offsetof(struct thread_info, kern_una_regs) ||
- TI_KUNA_INSN != offsetof(struct thread_info, kern_una_insn) ||
- TI_FPREGS != offsetof(struct thread_info, fpregs) ||
- (TI_FPREGS & (64 - 1)))
- thread_info_offsets_are_bolixed_dave();
-
- if (TRAP_PER_CPU_THREAD != offsetof(struct trap_per_cpu, thread) ||
- (TRAP_PER_CPU_PGD_PADDR !=
- offsetof(struct trap_per_cpu, pgd_paddr)) ||
- (TRAP_PER_CPU_CPU_MONDO_PA !=
- offsetof(struct trap_per_cpu, cpu_mondo_pa)) ||
- (TRAP_PER_CPU_DEV_MONDO_PA !=
- offsetof(struct trap_per_cpu, dev_mondo_pa)) ||
- (TRAP_PER_CPU_RESUM_MONDO_PA !=
- offsetof(struct trap_per_cpu, resum_mondo_pa)) ||
- (TRAP_PER_CPU_RESUM_KBUF_PA !=
- offsetof(struct trap_per_cpu, resum_kernel_buf_pa)) ||
- (TRAP_PER_CPU_NONRESUM_MONDO_PA !=
- offsetof(struct trap_per_cpu, nonresum_mondo_pa)) ||
- (TRAP_PER_CPU_NONRESUM_KBUF_PA !=
- offsetof(struct trap_per_cpu, nonresum_kernel_buf_pa)) ||
- (TRAP_PER_CPU_FAULT_INFO !=
- offsetof(struct trap_per_cpu, fault_info)) ||
- (TRAP_PER_CPU_CPU_MONDO_BLOCK_PA !=
- offsetof(struct trap_per_cpu, cpu_mondo_block_pa)) ||
- (TRAP_PER_CPU_CPU_LIST_PA !=
- offsetof(struct trap_per_cpu, cpu_list_pa)) ||
- (TRAP_PER_CPU_TSB_HUGE !=
- offsetof(struct trap_per_cpu, tsb_huge)) ||
- (TRAP_PER_CPU_TSB_HUGE_TEMP !=
- offsetof(struct trap_per_cpu, tsb_huge_temp)) ||
- (TRAP_PER_CPU_IRQ_WORKLIST_PA !=
- offsetof(struct trap_per_cpu, irq_worklist_pa)) ||
- (TRAP_PER_CPU_CPU_MONDO_QMASK !=
- offsetof(struct trap_per_cpu, cpu_mondo_qmask)) ||
- (TRAP_PER_CPU_DEV_MONDO_QMASK !=
- offsetof(struct trap_per_cpu, dev_mondo_qmask)) ||
- (TRAP_PER_CPU_RESUM_QMASK !=
- offsetof(struct trap_per_cpu, resum_qmask)) ||
- (TRAP_PER_CPU_NONRESUM_QMASK !=
- offsetof(struct trap_per_cpu, nonresum_qmask)))
- trap_per_cpu_offsets_are_bolixed_dave();
-
- if ((TSB_CONFIG_TSB !=
- offsetof(struct tsb_config, tsb)) ||
- (TSB_CONFIG_RSS_LIMIT !=
- offsetof(struct tsb_config, tsb_rss_limit)) ||
- (TSB_CONFIG_NENTRIES !=
- offsetof(struct tsb_config, tsb_nentries)) ||
- (TSB_CONFIG_REG_VAL !=
- offsetof(struct tsb_config, tsb_reg_val)) ||
- (TSB_CONFIG_MAP_VADDR !=
- offsetof(struct tsb_config, tsb_map_vaddr)) ||
- (TSB_CONFIG_MAP_PTE !=
- offsetof(struct tsb_config, tsb_map_pte)))
- tsb_config_offsets_are_bolixed_dave();
-
- /* Attach to the address space of init_task. On SMP we
- * do this in smp.c:smp_callin for other cpus.
- */
- atomic_inc(&init_mm.mm_count);
- current->active_mm = &init_mm;
-}
git.samba.org / sfrench / cifs-2.6.git / blobdiff