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drm/radeon: fix halting UVD

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Removing the clock/power or resetting the VCPU can cause
hangs if that happens in the middle of a register write.

Stall the memory and register bus before putting the VCPU
into reset. Keep it in reset when unloading the module or
suspending.

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2013-08-01 17:34:07 +02:00 committed by Alex Deucher
parent 797f203f62
commit 2858c00d28
7 changed files with 36 additions and 11 deletions
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3
drivers/gpu/drm/radeon/cik.c
View File

@ -6194,7 +6194,7 @@ int cik_suspend(struct radeon_device *rdev)
radeon_vm_manager_fini(rdev);
cik_cp_enable(rdev, false);
cik_sdma_enable(rdev, false);
r600_uvd_rbc_stop(rdev);
r600_uvd_stop(rdev);
radeon_uvd_suspend(rdev);
cik_irq_suspend(rdev);
radeon_wb_disable(rdev);
@ -6358,6 +6358,7 @@ void cik_fini(struct radeon_device *rdev)
radeon_vm_manager_fini(rdev);
radeon_ib_pool_fini(rdev);
radeon_irq_kms_fini(rdev);
r600_uvd_stop(rdev);
radeon_uvd_fini(rdev);
cik_pcie_gart_fini(rdev);
r600_vram_scratch_fini(rdev);

3
drivers/gpu/drm/radeon/evergreen.c
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@ -5291,10 +5291,10 @@ int evergreen_resume(struct radeon_device *rdev)
int evergreen_suspend(struct radeon_device *rdev)
{
r600_audio_fini(rdev);
r600_uvd_stop(rdev);
radeon_uvd_suspend(rdev);
r700_cp_stop(rdev);
r600_dma_stop(rdev);
r600_uvd_rbc_stop(rdev);
evergreen_irq_suspend(rdev);
radeon_wb_disable(rdev);
evergreen_pcie_gart_disable(rdev);
@ -5429,6 +5429,7 @@ void evergreen_fini(struct radeon_device *rdev)
radeon_ib_pool_fini(rdev);
radeon_irq_kms_fini(rdev);
evergreen_pcie_gart_fini(rdev);
r600_uvd_stop(rdev);
radeon_uvd_fini(rdev);
r600_vram_scratch_fini(rdev);
radeon_gem_fini(rdev);

3
drivers/gpu/drm/radeon/ni.c
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@ -2286,7 +2286,7 @@ int cayman_suspend(struct radeon_device *rdev)
radeon_vm_manager_fini(rdev);
cayman_cp_enable(rdev, false);
cayman_dma_stop(rdev);
r600_uvd_rbc_stop(rdev);
r600_uvd_stop(rdev);
radeon_uvd_suspend(rdev);
evergreen_irq_suspend(rdev);
radeon_wb_disable(rdev);
@ -2418,6 +2418,7 @@ void cayman_fini(struct radeon_device *rdev)
radeon_vm_manager_fini(rdev);
radeon_ib_pool_fini(rdev);
radeon_irq_kms_fini(rdev);
r600_uvd_stop(rdev);
radeon_uvd_fini(rdev);
cayman_pcie_gart_fini(rdev);
r600_vram_scratch_fini(rdev);

28
drivers/gpu/drm/radeon/r600.c
View File

@ -2697,12 +2697,29 @@ int r600_uvd_rbc_start(struct radeon_device *rdev)
return 0;
}
void r600_uvd_rbc_stop(struct radeon_device *rdev)
void r600_uvd_stop(struct radeon_device *rdev)
{
struct radeon_ring *ring = &rdev->ring[R600_RING_TYPE_UVD_INDEX];
/* force RBC into idle state */
WREG32(UVD_RBC_RB_CNTL, 0x11010101);
/* Stall UMC and register bus before resetting VCPU */
WREG32_P(UVD_LMI_CTRL2, 1 << 8, ~(1 << 8));
WREG32_P(UVD_RB_ARB_CTRL, 1 << 3, ~(1 << 3));
mdelay(1);
/* put VCPU into reset */
WREG32(UVD_SOFT_RESET, VCPU_SOFT_RESET);
mdelay(5);
/* disable VCPU clock */
WREG32(UVD_VCPU_CNTL, 0x0);
/* Unstall UMC and register bus */
WREG32_P(UVD_LMI_CTRL2, 0, ~(1 << 8));
WREG32_P(UVD_RB_ARB_CTRL, 0, ~(1 << 3));
ring->ready = false;
}
@ -2722,6 +2739,11 @@ int r600_uvd_init(struct radeon_device *rdev)
/* disable interupt */
WREG32_P(UVD_MASTINT_EN, 0, ~(1 << 1));
/* Stall UMC and register bus before resetting VCPU */
WREG32_P(UVD_LMI_CTRL2, 1 << 8, ~(1 << 8));
WREG32_P(UVD_RB_ARB_CTRL, 1 << 3, ~(1 << 3));
mdelay(1);
/* put LMI, VCPU, RBC etc... into reset */
WREG32(UVD_SOFT_RESET, LMI_SOFT_RESET | VCPU_SOFT_RESET |
LBSI_SOFT_RESET | RBC_SOFT_RESET | CSM_SOFT_RESET |
@ -2751,10 +2773,6 @@ int r600_uvd_init(struct radeon_device *rdev)
WREG32(UVD_MPC_SET_ALU, 0);
WREG32(UVD_MPC_SET_MUX, 0x88);
/* Stall UMC */
WREG32_P(UVD_LMI_CTRL2, 1 << 8, ~(1 << 8));
WREG32_P(UVD_RB_ARB_CTRL, 1 << 3, ~(1 << 3));
/* take all subblocks out of reset, except VCPU */
WREG32(UVD_SOFT_RESET, VCPU_SOFT_RESET);
mdelay(5);

2
drivers/gpu/drm/radeon/radeon_asic.h
View File

@ -441,7 +441,7 @@ void rs780_dpm_debugfs_print_current_performance_level(struct radeon_device *rde
/* uvd */
int r600_uvd_init(struct radeon_device *rdev);
int r600_uvd_rbc_start(struct radeon_device *rdev);
void r600_uvd_rbc_stop(struct radeon_device *rdev);
void r600_uvd_stop(struct radeon_device *rdev);
int r600_uvd_ib_test(struct radeon_device *rdev, struct radeon_ring *ring);
void r600_uvd_fence_emit(struct radeon_device *rdev,
struct radeon_fence *fence);

2
drivers/gpu/drm/radeon/rv770.c
View File

@ -1983,6 +1983,7 @@ int rv770_resume(struct radeon_device *rdev)
int rv770_suspend(struct radeon_device *rdev)
{
r600_audio_fini(rdev);
r600_uvd_stop(rdev);
radeon_uvd_suspend(rdev);
r700_cp_stop(rdev);
r600_dma_stop(rdev);
@ -2098,6 +2099,7 @@ void rv770_fini(struct radeon_device *rdev)
radeon_ib_pool_fini(rdev);
radeon_irq_kms_fini(rdev);
rv770_pcie_gart_fini(rdev);
r600_uvd_stop(rdev);
radeon_uvd_fini(rdev);
r600_vram_scratch_fini(rdev);
radeon_gem_fini(rdev);

6
drivers/gpu/drm/radeon/si.c
View File

@ -6621,7 +6621,7 @@ int si_suspend(struct radeon_device *rdev)
si_cp_enable(rdev, false);
cayman_dma_stop(rdev);
if (rdev->has_uvd) {
r600_uvd_rbc_stop(rdev);
r600_uvd_stop(rdev);
radeon_uvd_suspend(rdev);
}
si_irq_suspend(rdev);
@ -6763,8 +6763,10 @@ void si_fini(struct radeon_device *rdev)
radeon_vm_manager_fini(rdev);
radeon_ib_pool_fini(rdev);
radeon_irq_kms_fini(rdev);
if (rdev->has_uvd)
if (rdev->has_uvd) {
r600_uvd_stop(rdev);
radeon_uvd_fini(rdev);
}
si_pcie_gart_fini(rdev);
r600_vram_scratch_fini(rdev);
radeon_gem_fini(rdev);