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authorAlex Deucher <alexander.deucher@amd.com>2014-06-03 00:13:21 +0400
committerAlex Deucher <alexander.deucher@amd.com>2014-06-10 06:06:55 +0400
commit65fcf668ee7f2de2fbd580e1297336045f1ef6f4 (patch)
tree17064a99c2cf9b0e6d4baab83e654758edef4617 /drivers/gpu/drm/radeon/evergreen.c
parent478b6e72721807953bc3513fc5895d5f007614e3 (diff)
downloadlinux-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/evergreen.c')
-rw-r--r--drivers/gpu/drm/radeon/evergreen.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 653eff814504..e2f605224e8c 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -3337,6 +3337,18 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
disabled_rb_mask &= ~(1 << i);
}
+ for (i = 0; i < rdev->config.evergreen.num_ses; 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.evergreen.max_simds;
+ tmp <<= 16;
+ tmp |= simd_disable_bitmap;
+ }
+ rdev->config.evergreen.active_simds = hweight32(~tmp);
+
WREG32(GRBM_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES);
WREG32(RLC_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES);