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drm/radeon: add query for number of active CUs

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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>
This commit is contained in:
Alex Deucher 2014-06-02 16:13:21 -04:00
parent 478b6e7272
commit 65fcf668ee
10 changed files with 76 additions and 4 deletions
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3
drivers/gpu/drm/radeon/r600.c
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@ -1958,6 +1958,9 @@ static void r600_gpu_init(struct radeon_device *rdev)
if (tmp < rdev->config.r600.max_simds) {
rdev->config.r600.max_simds = tmp;
}
tmp = rdev->config.r600.max_simds -
r600_count_pipe_bits((cc_gc_shader_pipe_config >> 16) & R6XX_MAX_SIMDS_MASK);
rdev->config.r600.active_simds = tmp;
disabled_rb_mask = (RREG32(CC_RB_BACKEND_DISABLE) >> 16) & R6XX_MAX_BACKENDS_MASK;
tmp = (tiling_config & PIPE_TILING__MASK) >> PIPE_TILING__SHIFT;