diff options
| author | Alistair Popple <alistair@popple.id.au> | 2020-05-21 03:43:40 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-06-02 12:59:20 +0200 |
| commit | 87939d50e5888bd78478d9aa9455f56b919df658 (patch) | |
| tree | 55ee967e8a15d7273ebc3bad9d059bdc197869f9 /arch/powerpc/include | |
| parent | powerpc/dt_cpu_ftrs: Enable Prefixed Instructions (diff) | |
| download | linux-87939d50e5888bd78478d9aa9455f56b919df658.tar.xz linux-87939d50e5888bd78478d9aa9455f56b919df658.zip | |
powerpc/dt_cpu_ftrs: Add MMA feature
Matrix multiple assist (MMA) is a new feature added to ISAv3.1 and
POWER10. Support on powernv can be selected via a firmware CPU device
tree feature which enables it via a PCR bit.
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200521014341.29095-7-alistair@popple.id.au
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index dd20af367b57..88e6c78100d9 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -481,7 +481,8 @@ #define PCR_VEC_DIS (__MASK(63-0)) /* Vec. disable (bit NA since POWER8) */ #define PCR_VSX_DIS (__MASK(63-1)) /* VSX disable (bit NA since POWER8) */ #define PCR_TM_DIS (__MASK(63-2)) /* Trans. memory disable (POWER8) */ -#define PCR_HIGH_BITS (PCR_VEC_DIS | PCR_VSX_DIS | PCR_TM_DIS) +#define PCR_MMA_DIS (__MASK(63-3)) /* Matrix-Multiply Accelerator */ +#define PCR_HIGH_BITS (PCR_MMA_DIS | PCR_VEC_DIS | PCR_VSX_DIS | PCR_TM_DIS) /* * These bits are used in the function kvmppc_set_arch_compat() to specify and * determine both the compatibility level which we want to emulate and the |