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| author | Michael Neuling | 2016-11-23 00:44:09 +0100 |
|---|---|---|
| committer | Michael Ellerman | 2016-11-23 01:18:22 +0100 |
| commit | 02ed21aeda0e02d84af493f92b1b6b6b13ddd6e8 (patch) | |
| tree | a115a394a9d00b00766e3fa42afbc67c0bf932f0 /arch/powerpc | |
| parent | powerpc/reg: Add definition for LPCR_PECE_HVEE (diff) | |
| download | kernel-qcow2-linux-02ed21aeda0e02d84af493f92b1b6b6b13ddd6e8.tar.gz kernel-qcow2-linux-02ed21aeda0e02d84af493f92b1b6b6b13ddd6e8.tar.xz kernel-qcow2-linux-02ed21aeda0e02d84af493f92b1b6b6b13ddd6e8.zip | |
powerpc/powernv: Define and set POWER9 HFSCR doorbell bit
Define and set the POWER9 HFSCR doorbell bit so that guests can use
msgsndp.
ISA 3.0 calls this MSGP, so name it accordingly in the code.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/cpu_setup_power.S | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index c94df450bdd6..04aa1ee8cdb6 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -309,6 +309,7 @@ /* HFSCR and FSCR bit numbers are the same */ #define FSCR_LM_LG 11 /* Enable Load Monitor Registers */ +#define FSCR_MSGP_LG 10 /* Enable MSGP */ #define FSCR_TAR_LG 8 /* Enable Target Address Register */ #define FSCR_EBB_LG 7 /* Enable Event Based Branching */ #define FSCR_TM_LG 5 /* Enable Transactional Memory */ @@ -324,6 +325,7 @@ #define FSCR_DSCR __MASK(FSCR_DSCR_LG) #define SPRN_HFSCR 0xbe /* HV=1 Facility Status & Control Register */ #define HFSCR_LM __MASK(FSCR_LM_LG) +#define HFSCR_MSGP __MASK(FSCR_MSGP_LG) #define HFSCR_TAR __MASK(FSCR_TAR_LG) #define HFSCR_EBB __MASK(FSCR_EBB_LG) #define HFSCR_TM __MASK(FSCR_TM_LG) diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S index 52ff3f025437..bdfc1c67eb38 100644 --- a/arch/powerpc/kernel/cpu_setup_power.S +++ b/arch/powerpc/kernel/cpu_setup_power.S @@ -174,7 +174,7 @@ __init_FSCR: __init_HFSCR: mfspr r3,SPRN_HFSCR ori r3,r3,HFSCR_TAR|HFSCR_TM|HFSCR_BHRB|HFSCR_PM|\ - HFSCR_DSCR|HFSCR_VECVSX|HFSCR_FP|HFSCR_EBB + HFSCR_DSCR|HFSCR_VECVSX|HFSCR_FP|HFSCR_EBB|HFSCR_MSGP mtspr SPRN_HFSCR,r3 blr |