diff options
Diffstat (limited to 'arch/mips/kernel/traps.c')
| -rw-r--r-- | arch/mips/kernel/traps.c | 71 |
1 files changed, 58 insertions, 13 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index f9c8746be8d6..e0b499694d18 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -78,6 +78,7 @@ extern asmlinkage void handle_cpu(void); extern asmlinkage void handle_ov(void); extern asmlinkage void handle_tr(void); extern asmlinkage void handle_fpe(void); +extern asmlinkage void handle_ftlb(void); extern asmlinkage void handle_mdmx(void); extern asmlinkage void handle_watch(void); extern asmlinkage void handle_mt(void); @@ -1080,7 +1081,7 @@ asmlinkage void do_cpu(struct pt_regs *regs) unsigned long old_epc, old31; unsigned int opcode; unsigned int cpid; - int status; + int status, err; unsigned long __maybe_unused flags; prev_state = exception_enter(); @@ -1153,19 +1154,19 @@ asmlinkage void do_cpu(struct pt_regs *regs) case 1: if (used_math()) /* Using the FPU again. */ - own_fpu(1); + err = own_fpu(1); else { /* First time FPU user. */ - init_fpu(); + err = init_fpu(); set_used_math(); } - if (!raw_cpu_has_fpu) { + if (!raw_cpu_has_fpu || err) { int sig; void __user *fault_addr = NULL; sig = fpu_emulator_cop1Handler(regs, ¤t->thread.fpu, 0, &fault_addr); - if (!process_fpemu_return(sig, fault_addr)) + if (!process_fpemu_return(sig, fault_addr) && !err) mt_ase_fp_affinity(); } @@ -1336,6 +1337,8 @@ static inline void parity_protection_init(void) case CPU_34K: case CPU_74K: case CPU_1004K: + case CPU_INTERAPTIV: + case CPU_PROAPTIV: { #define ERRCTL_PE 0x80000000 #define ERRCTL_L2P 0x00800000 @@ -1425,14 +1428,27 @@ asmlinkage void cache_parity_error(void) printk("Decoded c0_cacheerr: %s cache fault in %s reference.\n", reg_val & (1<<30) ? "secondary" : "primary", reg_val & (1<<31) ? "data" : "insn"); - printk("Error bits: %s%s%s%s%s%s%s\n", - reg_val & (1<<29) ? "ED " : "", - reg_val & (1<<28) ? "ET " : "", - reg_val & (1<<26) ? "EE " : "", - reg_val & (1<<25) ? "EB " : "", - reg_val & (1<<24) ? "EI " : "", - reg_val & (1<<23) ? "E1 " : "", - reg_val & (1<<22) ? "E0 " : ""); + if (cpu_has_mips_r2 && + ((current_cpu_data.processor_id && 0xff0000) == PRID_COMP_MIPS)) { + pr_err("Error bits: %s%s%s%s%s%s%s%s\n", + reg_val & (1<<29) ? "ED " : "", + reg_val & (1<<28) ? "ET " : "", + reg_val & (1<<27) ? "ES " : "", + reg_val & (1<<26) ? "EE " : "", + reg_val & (1<<25) ? "EB " : "", + reg_val & (1<<24) ? "EI " : "", + reg_val & (1<<23) ? "E1 " : "", + reg_val & (1<<22) ? "E0 " : ""); + } else { + pr_err("Error bits: %s%s%s%s%s%s%s\n", + reg_val & (1<<29) ? "ED " : "", + reg_val & (1<<28) ? "ET " : "", + reg_val & (1<<26) ? "EE " : "", + reg_val & (1<<25) ? "EB " : "", + reg_val & (1<<24) ? "EI " : "", + reg_val & (1<<23) ? "E1 " : "", + reg_val & (1<<22) ? "E0 " : ""); + } printk("IDX: 0x%08x\n", reg_val & ((1<<22)-1)); #if defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64) @@ -1446,6 +1462,34 @@ asmlinkage void cache_parity_error(void) panic("Can't handle the cache error!"); } +asmlinkage void do_ftlb(void) +{ + const int field = 2 * sizeof(unsigned long); + unsigned int reg_val; + + /* For the moment, report the problem and hang. */ + if (cpu_has_mips_r2 && + ((current_cpu_data.processor_id && 0xff0000) == PRID_COMP_MIPS)) { + pr_err("FTLB error exception, cp0_ecc=0x%08x:\n", + read_c0_ecc()); + pr_err("cp0_errorepc == %0*lx\n", field, read_c0_errorepc()); + reg_val = read_c0_cacheerr(); + pr_err("c0_cacheerr == %08x\n", reg_val); + + if ((reg_val & 0xc0000000) == 0xc0000000) { + pr_err("Decoded c0_cacheerr: FTLB parity error\n"); + } else { + pr_err("Decoded c0_cacheerr: %s cache fault in %s reference.\n", + reg_val & (1<<30) ? "secondary" : "primary", + reg_val & (1<<31) ? "data" : "insn"); + } + } else { + pr_err("FTLB error exception\n"); + } + /* Just print the cacheerr bits for now */ + cache_parity_error(); +} + /* * SDBBP EJTAG debug exception handler. * We skip the instruction and return to the next instruction. @@ -1995,6 +2039,7 @@ void __init trap_init(void) if (cpu_has_fpu && !cpu_has_nofpuex) set_except_vector(15, handle_fpe); + set_except_vector(16, handle_ftlb); set_except_vector(22, handle_mdmx); if (cpu_has_mcheck) |