diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-10-02 14:16:11 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-10-14 16:16:24 -0400 |
| commit | c9c145021f8fc8445fb07d16073696330b6186c8 (patch) | |
| tree | 5521f48ed1798fe6ccd8ae288e657c53373c0421 | |
| parent | 554384198c11717d9d9fdb2c9aa83ab78cd50fdf (diff) | |
drm/amdgpu/atom: add support for new mul32 opcodes (v2)
Better precision than the regular mul opcode.
v2: handle big endian properly.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atom.c | 18 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atom.h | 2 |
2 files changed, 18 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c index 885d3d3b5213..474357d019b2 100644 --- a/drivers/gpu/drm/amd/amdgpu/atom.c +++ b/drivers/gpu/drm/amd/amdgpu/atom.c @@ -788,6 +788,20 @@ static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg) ctx->ctx->divmul[0] = dst * src; } +static void atom_op_mul32(atom_exec_context *ctx, int *ptr, int arg) +{ + uint64_t val64; + uint8_t attr = U8((*ptr)++); + uint32_t dst, src; + SDEBUG(" src1: "); + dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); + SDEBUG(" src2: "); + src = atom_get_src(ctx, attr, ptr); + val64 = (uint64_t)dst * (uint64_t)src; + ctx->ctx->divmul[0] = lower_32_bits(val64); + ctx->ctx->divmul[1] = upper_32_bits(val64); +} + static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg) { /* nothing */ @@ -1160,7 +1174,9 @@ static struct { atom_op_shr, ATOM_ARG_PLL}, { atom_op_shr, ATOM_ARG_MC}, { atom_op_debug, 0}, { - atom_op_processds, 0}, + atom_op_processds, 0}, { + atom_op_mul32, ATOM_ARG_PS}, { + atom_op_mul32, ATOM_ARG_WS}, }; static int amdgpu_atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) diff --git a/drivers/gpu/drm/amd/amdgpu/atom.h b/drivers/gpu/drm/amd/amdgpu/atom.h index 09d0f8230708..a940eb3bb512 100644 --- a/drivers/gpu/drm/amd/amdgpu/atom.h +++ b/drivers/gpu/drm/amd/amdgpu/atom.h @@ -60,7 +60,7 @@ #define ATOM_CT_PS_MASK 0x7F #define ATOM_CT_CODE_PTR 6 -#define ATOM_OP_CNT 123 +#define ATOM_OP_CNT 125 #define ATOM_OP_EOT 91 #define ATOM_CASE_MAGIC 0x63 |