diff options
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64e.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64e.S | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index d24d4400cc7..429983c06f9 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -120,6 +120,12 @@ std r14,PACA_EXMC+EX_R14(r13); \ std r15,PACA_EXMC+EX_R15(r13) +#define PROLOG_ADDITION_DOORBELL_GEN \ + lbz r11,PACASOFTIRQEN(r13); /* are irqs soft-disabled ? */ \ + cmpwi cr0,r11,0; /* yes -> go out of line */ \ + beq masked_doorbell_book3e + + /* Core exception code for all exceptions except TLB misses. * XXX: Needs to make SPRN_SPRG_GEN depend on exception type */ @@ -522,7 +528,13 @@ kernel_dbg_exc: MASKABLE_EXCEPTION(0x260, perfmon, .performance_monitor_exception, ACK_NONE) /* Doorbell interrupt */ - MASKABLE_EXCEPTION(0x2070, doorbell, .doorbell_exception, ACK_NONE) + START_EXCEPTION(doorbell) + NORMAL_EXCEPTION_PROLOG(0x2070, PROLOG_ADDITION_DOORBELL) + EXCEPTION_COMMON(0x2070, PACA_EXGEN, INTS_DISABLE_ALL) + CHECK_NAPPING() + addi r3,r1,STACK_FRAME_OVERHEAD + bl .doorbell_exception + b .ret_from_except_lite /* Doorbell critical Interrupt */ START_EXCEPTION(doorbell_crit); @@ -545,8 +557,16 @@ kernel_dbg_exc: * An interrupt came in while soft-disabled; clear EE in SRR1, * clear paca->hard_enabled and return. */ +masked_doorbell_book3e: + mtcr r10 + /* Resend the doorbell to fire again when ints enabled */ + mfspr r10,SPRN_PIR + PPC_MSGSND(r10) + b masked_interrupt_book3e_common + masked_interrupt_book3e: mtcr r10 +masked_interrupt_book3e_common: stb r11,PACAHARDIRQEN(r13) mfspr r10,SPRN_SRR1 rldicl r11,r10,48,1 /* clear MSR_EE */ |