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drm/amdgpu: reroute VMC and UMD to IH ring 1 for oss v5

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[Why]
Due Page faults can easily overwhelm the interrupt handler.
So to make sure that we never lose valuable interrupts on the primary ring
we re-route page faults to IH ring 1.
It also facilitates the recovery page process, since it's already
running from a process context.
This is valid for Arcturus and future Navi generation GPUs.

[How]
Setting IH_CLIENT_CFG_DATA for VMC and UMD IH clients.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Sierra 2020-03-23 14:00:43 -05:00 committed by Alex Deucher
parent 0ab176e69c
commit 9e94ff3386
1 changed files with 19 additions and 0 deletions
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19
drivers/gpu/drm/amd/amdgpu/navi10_ih.c
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@ -205,6 +205,24 @@ static uint32_t navi10_ih_doorbell_rptr(struct amdgpu_ih_ring *ih)
return ih_doorbell_rtpr;
}
static void navi10_ih_reroute_ih(struct amdgpu_device *adev)
{
uint32_t tmp;
/* Reroute to IH ring 1 for VMC */
WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x12);
tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA);
tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, CLIENT_TYPE, 1);
tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1);
WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp);
/* Reroute IH ring 1 for UMC */
WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x1B);
tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA);
tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1);
WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp);
}
/**
* navi10_ih_irq_init - init and enable the interrupt ring
*
@ -243,6 +261,7 @@ static int navi10_ih_irq_init(struct amdgpu_device *adev)
} else {
WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
}
navi10_ih_reroute_ih(adev);
if (unlikely(adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT)) {
if (ih->use_bus_addr) {