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drm/gfx12: Program DB_RING_CONTROL

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This is needed to allocate occlusion counters across
both gfx pipes. GFX 12 only has one gfx pipe, so no functional
change since the default value is 1.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2026-06-26 16:33:56 -04:00
parent aa087b5d29
commit 402ebe22b2
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
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@ -1827,6 +1827,15 @@ static void gfx_v12_0_constants_init(struct amdgpu_device *adev)
gfx_v12_0_get_cu_info(adev, &adev->gfx.cu_info);
gfx_v12_0_get_tcc_info(adev);
adev->gfx.config.pa_sc_tile_steering_override = 0;
/* Program DB_RING_CONTROL for multiple GFX pipes
* Default power up value is 1.
* Possible values:
* 0 - split occlusion counters between gfx pipes
* 1 - all occlusion counters to pipe 0
* 2 - all occlusion counters to pipe 1
*/
WREG32_FIELD15_PREREG(GC, 0, DB_RING_CONTROL, COUNTER_CONTROL,
(adev->gfx.me.num_pipe_per_me > 1) ? 0 : 1);
/* XXX SH_MEM regs */
/* where to put LDS, scratch, GPUVM in FSA64 space */