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drm/amdgpu/gfx9: use hweight for calculating num_rbs

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Match what we do for other asics.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-03-24 14:47:18 -04:00
parent f2713e8c2a
commit 2572c24ca9
1 changed files with 2 additions and 5 deletions
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7
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
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@ -1231,7 +1231,7 @@ static u32 gfx_v9_0_get_rb_active_bitmap(struct amdgpu_device *adev)
static void gfx_v9_0_setup_rb(struct amdgpu_device *adev)
{
int i, j;
u32 data, tmp, num_rbs = 0;
u32 data;
u32 active_rbs = 0;
u32 rb_bitmap_width_per_sh = adev->gfx.config.max_backends_per_se /
adev->gfx.config.max_sh_per_se;
@ -1249,10 +1249,7 @@ static void gfx_v9_0_setup_rb(struct amdgpu_device *adev)
mutex_unlock(&adev->grbm_idx_mutex);
adev->gfx.config.backend_enable_mask = active_rbs;
tmp = active_rbs;
while (tmp >>= 1)
num_rbs++;
adev->gfx.config.num_rbs = num_rbs;
adev->gfx.config.num_rbs = hweight32(active_rbs);
}
#define DEFAULT_SH_MEM_BASES (0x6000)