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| author |   Nicholas Piggin <npiggin@gmail.com> | 2017-04-13 20:16:24 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2017-04-13 23:34:34 +1000 |
| commit | 6b3edefefa6752df57ad636f26baa1b0a502ddab (patch) | |
| tree | bf00c8ab7b82a22703209b0ba1d0fdddb91fa00b /arch/powerpc/include/asm/ppc-opcode.h | |
| parent | powerpc/64s: Avoid a branch for ppc_msgsnd (diff) | |
| download | linux-dev-6b3edefefa6752df57ad636f26baa1b0a502ddab.tar.xz linux-dev-6b3edefefa6752df57ad636f26baa1b0a502ddab.zip | |
powerpc/powernv: POWER9 support for msgsnd/doorbell IPI
POWER9 requires msgsync for receiver-side synchronization, and a DD1
workaround restricts IPIs to core-local.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Drop no longer needed asm feature macro changes]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/ppc-opcode.h')
| -rw-r--r-- | arch/powerpc/include/asm/ppc-opcode.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index e7d6d86563ee..142d78d645f4 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -161,6 +161,7 @@ #define PPC_INST_MFTMR 0x7c0002dc #define PPC_INST_MSGSND 0x7c00019c #define PPC_INST_MSGCLR 0x7c0001dc +#define PPC_INST_MSGSYNC 0x7c0006ec #define PPC_INST_MSGSNDP 0x7c00011c #define PPC_INST_MTTMR 0x7c0003dc #define PPC_INST_NOP 0x60000000 @@ -345,6 +346,7 @@ ___PPC_RB(b) | __PPC_EH(eh)) #define PPC_MSGSND(b) stringify_in_c(.long PPC_INST_MSGSND | \ ___PPC_RB(b)) +#define PPC_MSGSYNC stringify_in_c(.long PPC_INST_MSGSYNC) #define PPC_MSGCLR(b) stringify_in_c(.long PPC_INST_MSGCLR | \ ___PPC_RB(b)) #define PPC_MSGSNDP(b) stringify_in_c(.long PPC_INST_MSGSNDP | \ |