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drm/amdgpu: fix incorrect number of active RBs for gfx12

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The RB bitmap should be global active RB bitmap &
active RB bitmap based on active SA.

Signed-off-by: Tim Huang <tim.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tim Huang 2025-01-06 13:30:06 +08:00 committed by Alex Deucher
parent 4a60c55b3b
commit 6b34d0328b
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
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@ -1623,6 +1623,7 @@ static u32 gfx_v12_0_get_rb_active_bitmap(struct amdgpu_device *adev)
static void gfx_v12_0_setup_rb(struct amdgpu_device *adev)
{
u32 rb_bitmap_per_sa;
u32 rb_bitmap_width_per_sa;
u32 max_sa;
u32 active_sa_bitmap;
@ -1640,12 +1641,14 @@ static void gfx_v12_0_setup_rb(struct amdgpu_device *adev)
adev->gfx.config.max_sh_per_se;
rb_bitmap_width_per_sa = adev->gfx.config.max_backends_per_se /
adev->gfx.config.max_sh_per_se;
rb_bitmap_per_sa = amdgpu_gfx_create_bitmask(rb_bitmap_width_per_sa);
for (i = 0; i < max_sa; i++) {
if (active_sa_bitmap & (1 << i))
active_rb_bitmap |= (0x3 << (i * rb_bitmap_width_per_sa));
active_rb_bitmap |= (rb_bitmap_per_sa << (i * rb_bitmap_width_per_sa));
}
active_rb_bitmap |= global_active_rb_bitmap;
active_rb_bitmap &= global_active_rb_bitmap;
adev->gfx.config.backend_enable_mask = active_rb_bitmap;
adev->gfx.config.num_rbs = hweight32(active_rb_bitmap);
}