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drm/amdkfd: Set SDMA_RLCx_IB_CNTL/SWITCH_INSIDE_IB

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[ Upstream commit ab9fcc6362e0699fc1150aa1d8503c40fce2c1e1 ]

When submitting MQD to CP, set SDMA_RLCx_IB_CNTL/SWITCH_INSIDE_IB bit so
it'll allow SDMA preemption if there is a massive command buffer of
long-running SDMA commands.

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Amber Lin 2025-04-22 15:54:19 -04:00 • committed by Greg Kroah-Hartman
commit 8a8b77335f
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
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@ -387,6 +387,10 @@ static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
m->sdma_engine_id = q->sdma_engine_id;
m->sdma_queue_id = q->sdma_queue_id;
m->sdmax_rlcx_dummy_reg = SDMA_RLC_DUMMY_DEFAULT;
/* Allow context switch so we don't cross-process starve with a massive
* command buffer of long-running SDMA commands
*/
m->sdmax_rlcx_ib_cntl |= SDMA0_GFX_IB_CNTL__SWITCH_INSIDE_IB_MASK;
q->is_active = QUEUE_IS_ACTIVE(*q);
}