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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-04-13 20:16:21 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-13 23:34:33 +1000 |
| commit | b866cc2199d6a6cdcefe4acfe4cfca3ac3c6d38e (patch) | |
| tree | 8baaa55d1ac71d0d18a1d932e561af6751c39c61 /arch/powerpc/include/asm/dbell.h | |
| parent | 9b7ff0c6586bc0541ebcd1ff6773b11a49f1a058 (diff) | |
| download | talos-obmc-linux-b866cc2199d6a6cdcefe4acfe4cfca3ac3c6d38e.tar.gz talos-obmc-linux-b866cc2199d6a6cdcefe4acfe4cfca3ac3c6d38e.zip | |
powerpc: Change the doorbell IPI calling convention
Change the doorbell callers to know about their msgsnd addressing,
rather than have them set a per-cpu target data tag at boot that gets
sent to the cause_ipi functions. The data is only used for doorbell IPI
functions, no other IPI types, so it makes sense to keep that detail
local to doorbell.
Have the platform code understand doorbell IPIs, rather than the
interrupt controller code understand them. Platform code can look at
capabilities it has available and decide which to use.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/dbell.h')
| -rw-r--r-- | arch/powerpc/include/asm/dbell.h | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/arch/powerpc/include/asm/dbell.h b/arch/powerpc/include/asm/dbell.h index 378167377065..a66eb596940c 100644 --- a/arch/powerpc/include/asm/dbell.h +++ b/arch/powerpc/include/asm/dbell.h @@ -35,8 +35,6 @@ enum ppc_dbell { #ifdef CONFIG_PPC_BOOK3S #define PPC_DBELL_MSGTYPE PPC_DBELL_SERVER -#define SPRN_DOORBELL_CPUTAG SPRN_TIR -#define PPC_DBELL_TAG_MASK 0x7f static inline void _ppc_msgsnd(u32 msg) { @@ -49,8 +47,6 @@ static inline void _ppc_msgsnd(u32 msg) #else /* CONFIG_PPC_BOOK3S */ #define PPC_DBELL_MSGTYPE PPC_DBELL -#define SPRN_DOORBELL_CPUTAG SPRN_PIR -#define PPC_DBELL_TAG_MASK 0x3fff static inline void _ppc_msgsnd(u32 msg) { @@ -59,9 +55,10 @@ static inline void _ppc_msgsnd(u32 msg) #endif /* CONFIG_PPC_BOOK3S */ -extern void doorbell_cause_ipi(int cpu, unsigned long data); +extern void doorbell_global_ipi(int cpu); +extern void doorbell_core_ipi(int cpu); +extern int doorbell_try_core_ipi(int cpu); extern void doorbell_exception(struct pt_regs *regs); -extern void doorbell_setup_this_cpu(void); static inline void ppc_msgsnd(enum ppc_dbell type, u32 flags, u32 tag) { |
