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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-07-09 05:31:28 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-07-09 06:11:17 (GMT) |
| commit | 89c81797d4a0779a957f4ea1f0c676cda203615b (patch) | |
| tree | 1c1e175ea4dd2c8aeb1816a7e6e39062e24ae860 /arch/powerpc/kernel | |
| parent | e8775d4aa17d70d123814e68a6a51bbea50e5c16 (diff) | |
| download | linux-fsl-qoriq-89c81797d4a0779a957f4ea1f0c676cda203615b.tar.xz | |
powerpc/book3e: Hookup doorbells exceptions on 64-bit Book3E
Note that critical doorbells are an unimplemented stub just like
other critical or machine check handlers, since we haven't done
support for "levelled" exceptions yet.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64e.S | 21 | ||||
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 7 |
3 files changed, 25 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 0100604..8a33318 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -68,6 +68,7 @@ obj64-$(CONFIG_HIBERNATION) += swsusp_asm64.o obj-$(CONFIG_MODULES) += module.o module_$(CONFIG_WORD_SIZE).o obj-$(CONFIG_44x) += cpu_setup_44x.o obj-$(CONFIG_FSL_BOOKE) += cpu_setup_fsl_booke.o dbell.o +obj-$(CONFIG_PPC_BOOK3E_64) += dbell.o extra-y := head_$(CONFIG_WORD_SIZE).o extra-$(CONFIG_PPC_BOOK3E_32) := head_new_booke.o diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 24dcc0e..a42637c 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -246,11 +246,9 @@ interrupt_base_book3e: /* fake trap */ EXCEPTION_STUB(0x1a0, watchdog) /* 0x09f0 */ EXCEPTION_STUB(0x1c0, data_tlb_miss) EXCEPTION_STUB(0x1e0, instruction_tlb_miss) + EXCEPTION_STUB(0x280, doorbell) + EXCEPTION_STUB(0x2a0, doorbell_crit) -#if 0 - EXCEPTION_STUB(0x280, processor_doorbell) - EXCEPTION_STUB(0x220, processor_doorbell_crit) -#endif .globl interrupt_end_book3e interrupt_end_book3e: @@ -428,6 +426,19 @@ interrupt_end_book3e: kernel_dbg_exc: b . /* NYI */ +/* Doorbell interrupt */ + MASKABLE_EXCEPTION(0x2070, doorbell, .doorbell_exception, ACK_NONE) + +/* Doorbell critical Interrupt */ + START_EXCEPTION(doorbell_crit); + CRIT_EXCEPTION_PROLOG(0x2080, PROLOG_ADDITION_NONE) +// EXCEPTION_COMMON(0x2080, PACA_EXCRIT, INTS_DISABLE_ALL) +// bl special_reg_save_crit +// addi r3,r1,STACK_FRAME_OVERHEAD +// bl .doorbell_critical_exception +// b ret_from_crit_except + b . + /* * An interrupt came in while soft-disabled; clear EE in SRR1, @@ -563,6 +574,8 @@ BAD_STACK_TRAMPOLINE(0xd00) BAD_STACK_TRAMPOLINE(0xe00) BAD_STACK_TRAMPOLINE(0xf00) BAD_STACK_TRAMPOLINE(0xf20) +BAD_STACK_TRAMPOLINE(0x2070) +BAD_STACK_TRAMPOLINE(0x2080) .globl bad_stack_book3e bad_stack_book3e: diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index fa6f385..2f6dc7f 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -64,6 +64,8 @@ #include <asm/ptrace.h> #include <asm/machdep.h> #include <asm/udbg.h> +#include <asm/dbell.h> + #ifdef CONFIG_PPC64 #include <asm/paca.h> #include <asm/firmware.h> @@ -153,6 +155,11 @@ notrace void raw_local_irq_restore(unsigned long en) if (get_hard_enabled()) return; +#if defined(CONFIG_BOOKE) && defined(CONFIG_SMP) + /* Check for pending doorbell interrupts on SMP */ + doorbell_exception(NULL); +#endif + /* * Need to hard-enable interrupts here. Since currently disabled, * no need to take further asm precautions against preemption; but |