diff options
Diffstat (limited to 'arch/blackfin/mach-common')
| -rw-r--r-- | arch/blackfin/mach-common/cplbmgr.S | 22 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/interrupt.S | 40 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/irqpanic.c | 50 |
3 files changed, 49 insertions, 63 deletions
diff --git a/arch/blackfin/mach-common/cplbmgr.S b/arch/blackfin/mach-common/cplbmgr.S index faca1ab344d..f5cf3accef3 100644 --- a/arch/blackfin/mach-common/cplbmgr.S +++ b/arch/blackfin/mach-common/cplbmgr.S @@ -190,7 +190,14 @@ ENTRY(_cplb_mgr) [P0 - 4] = R0; R0 = [P0 - 0x100]; [P0-0x104] = R0; -.Lie_move:P0+=4; +.Lie_move: + P0+=4; + + /* Clear ICPLB_DATA15, in case we don't find a replacement + * otherwise, we would have a duplicate entry, and will crash + */ + R0 = 0; + [P0 - 4] = R0; /* We've made space in the ICPLB table, so that ICPLB15 * is now free to be overwritten. Next, we have to determine @@ -515,14 +522,23 @@ ENTRY(_cplb_mgr) R0 = [P0++]; /* move data */ [P0 - 8] = R0; R0 = [P0-0x104] /* move address */ -.Lde_move: [P0-0x108] = R0; +.Lde_move: + [P0-0x108] = R0; + +.Lde_moved: + NOP; + + /* Clear DCPLB_DATA15, in case we don't find a replacement + * otherwise, we would have a duplicate entry, and will crash + */ + R0 = 0; + [P0 - 0x4] = R0; /* We've now made space in DCPLB15 for the new CPLB to be * installed. The next stage is to locate a CPLB in the * config table that covers the faulting address. */ -.Lde_moved:NOP; R0 = I0; /* Our faulting address */ P2.L = _dpdt_table; diff --git a/arch/blackfin/mach-common/interrupt.S b/arch/blackfin/mach-common/interrupt.S index 4de376418a1..f983ac7ea35 100644 --- a/arch/blackfin/mach-common/interrupt.S +++ b/arch/blackfin/mach-common/interrupt.S @@ -34,9 +34,13 @@ #include <asm/entry.h> #include <asm/asm-offsets.h> #include <asm/trace.h> +#include <asm/traps.h> +#include <asm/thread_info.h> #include <asm/mach-common/context.S> +.extern _ret_from_exception + #ifdef CONFIG_I_ENTRY_L1 .section .l1.text #else @@ -134,10 +138,11 @@ __common_int_entry: /* interrupt routine for ivhw - 5 */ ENTRY(_evt_ivhw) - SAVE_CONTEXT + SAVE_ALL_SYS #ifdef CONFIG_FRAME_POINTER fp = 0; #endif + #if ANOMALY_05000283 cc = r7 == r7; p5.h = 0xffc0; @@ -147,13 +152,8 @@ ENTRY(_evt_ivhw) 1: #endif - trace_buffer_stop(p0, r0); - - r0 = IRQ_HWERR; - r1 = sp; - #ifdef CONFIG_HARDWARE_PM - r7 = SEQSTAT; + r7 = [sp + PT_SEQSTAT]; r7 = r7 >>> 0xe; r6 = 0x1F; r7 = r7 & r6; @@ -161,11 +161,29 @@ ENTRY(_evt_ivhw) cc = r7 == r5; if cc jump .Lcall_do_ovf; /* deal with performance counter overflow */ #endif - + # We are going to dump something out, so make sure we print IPEND properly + p2.l = lo(IPEND); + p2.h = hi(IPEND); + r0 = [p2]; + [sp + PT_IPEND] = r0; + + /* set the EXCAUSE to HWERR for trap_c */ + r0 = [sp + PT_SEQSTAT]; + R1.L = LO(VEC_HWERR); + R1.H = HI(VEC_HWERR); + R0 = R0 | R1; + [sp + PT_SEQSTAT] = R0; + + r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ SP += -12; - call _irq_panic; + call _trap_c; SP += 12; + + call _ret_from_exception; +.Lcommon_restore_all_sys: + RESTORE_ALL_SYS rti; + #ifdef CONFIG_HARDWARE_PM .Lcall_do_ovf: @@ -173,9 +191,11 @@ ENTRY(_evt_ivhw) call _pm_overflow; SP += 12; - jump .Lcommon_restore_context; + jump .Lcommon_restore_all_sys; #endif +ENDPROC(_evt_ivhw) + /* Interrupt routine for evt2 (NMI). * We don't actually use this, so just return. * For inner circle type details, please see: diff --git a/arch/blackfin/mach-common/irqpanic.c b/arch/blackfin/mach-common/irqpanic.c index b22959b197e..606ded9ff4e 100644 --- a/arch/blackfin/mach-common/irqpanic.c +++ b/arch/blackfin/mach-common/irqpanic.c @@ -46,9 +46,6 @@ void irq_panic(int reason, struct pt_regs *regs) __attribute__ ((l1_text)); */ asmlinkage void irq_panic(int reason, struct pt_regs *regs) { - int sig = 0; - siginfo_t info; - #ifdef CONFIG_DEBUG_ICACHE_CHECK unsigned int cmd, tag, ca, cache_hi, cache_lo, *pa; unsigned short i, j, die; @@ -136,53 +133,6 @@ asmlinkage void irq_panic(int reason, struct pt_regs *regs) } #endif - printk(KERN_EMERG "\n"); - printk(KERN_EMERG "Exception: IRQ 0x%x entered\n", reason); - printk(KERN_EMERG " code=[0x%08lx], stack frame=0x%08lx, " - " bad PC=0x%08lx\n", - (unsigned long)regs->seqstat, - (unsigned long)regs, - (unsigned long)regs->pc); - if (reason == 0x5) { - printk(KERN_EMERG "----------- HARDWARE ERROR -----------\n"); - - /* There is only need to check for Hardware Errors, since other - * EXCEPTIONS are handled in TRAPS.c (MH) - */ - switch (regs->seqstat & SEQSTAT_HWERRCAUSE) { - case (SEQSTAT_HWERRCAUSE_SYSTEM_MMR): /* System MMR Error */ - info.si_code = BUS_ADRALN; - sig = SIGBUS; - printk(KERN_EMERG HWC_x2(KERN_EMERG)); - break; - case (SEQSTAT_HWERRCAUSE_EXTERN_ADDR): /* External Memory Addressing Error */ - info.si_code = BUS_ADRERR; - sig = SIGBUS; - printk(KERN_EMERG HWC_x3(KERN_EMERG)); - break; - case (SEQSTAT_HWERRCAUSE_PERF_FLOW): /* Performance Monitor Overflow */ - printk(KERN_EMERG HWC_x12(KERN_EMERG)); - break; - case (SEQSTAT_HWERRCAUSE_RAISE_5): /* RAISE 5 instruction */ - printk(KERN_EMERG HWC_x18(KERN_EMERG)); - break; - default: /* Reserved */ - printk(KERN_EMERG HWC_default(KERN_EMERG)); - break; - } - } - - regs->ipend = bfin_read_IPEND(); - dump_bfin_process(regs); - dump_bfin_mem((void *)regs->pc); - show_regs(regs); - if (0 == (info.si_signo = sig) || 0 == user_mode(regs)) /* in kernelspace */ - panic("Unhandled IRQ or exceptions!\n"); - else { /* in userspace */ - info.si_errno = 0; - info.si_addr = (void *)regs->pc; - force_sig_info(sig, &info, current); - } } #ifdef CONFIG_HARDWARE_PM |