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drm/amdgpu: Enable MES to handle doorbell ring on unmapped queue

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On MES12, HW can monitor up to 2048 doorbells that not be
mapped currently and trigger the interrupt to MES when these unmapped
doorbell been ringed.

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
shaoyunl
2023-11-02 19:26:39 -04:00
committed by Alex Deucher
parent 745f46b6a9
commit d817c470cb
1 changed files with 24 additions and 0 deletions
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24
drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
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@@ -454,6 +454,27 @@ static void mes_v12_0_init_aggregated_doorbell(struct amdgpu_mes *mes)
WREG32_SOC15(GC, 0, regCP_HQD_GFX_CONTROL, data);
}
static void mes_v12_0_enable_unmapped_doorbell_handling(
struct amdgpu_mes *mes, bool enable)
{
struct amdgpu_device *adev = mes->adev;
uint32_t data = RREG32_SOC15(GC, 0, regCP_UNMAPPED_DOORBELL);
/*
* The default PROC_LSB settng is 0xc which means doorbell
* addr[16:12] gives the doorbell page number. For kfd, each
* process will use 2 pages of doorbell, we need to change the
* setting to 0xd
*/
data &= ~CP_UNMAPPED_DOORBELL__PROC_LSB_MASK;
data |= 0xd << CP_UNMAPPED_DOORBELL__PROC_LSB__SHIFT;
data |= (enable ? 1 : 0) << CP_UNMAPPED_DOORBELL__ENABLE__SHIFT;
WREG32_SOC15(GC, 0, regCP_UNMAPPED_DOORBELL, data);
}
static const struct amdgpu_mes_funcs mes_v12_0_funcs = {
.add_hw_queue = mes_v12_0_add_hw_queue,
.remove_hw_queue = mes_v12_0_remove_hw_queue,
@@ -1233,6 +1254,9 @@ static int mes_v12_0_hw_init(void *handle)
mes_v12_0_init_aggregated_doorbell(&adev->mes);
/* Enable the MES to handle doorbell ring on unmapped queue */
mes_v12_0_enable_unmapped_doorbell_handling(&adev->mes, true);
r = mes_v12_0_query_sched_status(&adev->mes);
if (r) {
DRM_ERROR("MES is busy\n");