diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2014-06-03 00:13:21 +0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2014-06-10 06:06:55 +0400 |
| commit | 65fcf668ee7f2de2fbd580e1297336045f1ef6f4 (patch) | |
| tree | 17064a99c2cf9b0e6d4baab83e654758edef4617 /drivers/gpu/drm/radeon/ni.c | |
| parent | 478b6e72721807953bc3513fc5895d5f007614e3 (diff) | |
| download | linux-65fcf668ee7f2de2fbd580e1297336045f1ef6f4.tar.xz | |
drm/radeon: add query for number of active CUs
Query to find out how many compute units on a GPU.
Useful for OpenCL usermode drivers.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/ni.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/ni.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index c0fd8f647cf0..5a33ca681867 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -1057,6 +1057,18 @@ static void cayman_gpu_init(struct radeon_device *rdev) disabled_rb_mask &= ~(1 << i); } + for (i = 0; i < rdev->config.cayman.max_shader_engines; i++) { + u32 simd_disable_bitmap; + + WREG32(GRBM_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_INDEX(i)); + WREG32(RLC_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_INDEX(i)); + simd_disable_bitmap = (RREG32(CC_GC_SHADER_PIPE_CONFIG) & 0xffff0000) >> 16; + simd_disable_bitmap |= 0xffffffff << rdev->config.cayman.max_simds_per_se; + tmp <<= 16; + tmp |= simd_disable_bitmap; + } + rdev->config.cayman.active_simds = hweight32(~tmp); + WREG32(GRBM_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES); WREG32(RLC_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES); |