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authorAlex Deucher <alexander.deucher@amd.com>2013-01-03 13:15:30 -0500
committerAlex Deucher <alexander.deucher@amd.com>2013-01-03 21:29:35 -0500
commit06bc6df0df52bf8d08247ded2f4d98966d5a046b (patch)
tree30eba03cd9f9da531759e8908ea141b2471d5a62 /drivers/gpu
parent271d6fed6580c0a7af9b74b9aa90d8a62bdb326d (diff)
drm/radeon: switch to a finer grained reset for SI (v2)
No change in functionality as we currently set all the reset flags. v2: fix typo Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/si.c99
1 files changed, 65 insertions, 34 deletions
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 4bf17334927a..3240a3d64f30 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -2126,15 +2126,13 @@ bool si_gpu_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring)
return radeon_ring_test_lockup(rdev, ring);
}
-static int si_gpu_soft_reset(struct radeon_device *rdev)
+static void si_gpu_soft_reset_gfx(struct radeon_device *rdev)
{
- struct evergreen_mc_save save;
- u32 grbm_reset = 0, tmp;
+ u32 grbm_reset = 0;
if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE))
- return 0;
+ return;
- dev_info(rdev->dev, "GPU softreset \n");
dev_info(rdev->dev, " GRBM_STATUS=0x%08X\n",
RREG32(GRBM_STATUS));
dev_info(rdev->dev, " GRBM_STATUS2=0x%08X\n",
@@ -2145,36 +2143,10 @@ static int si_gpu_soft_reset(struct radeon_device *rdev)
RREG32(GRBM_STATUS_SE1));
dev_info(rdev->dev, " SRBM_STATUS=0x%08X\n",
RREG32(SRBM_STATUS));
- dev_info(rdev->dev, " DMA_STATUS_REG = 0x%08X\n",
- RREG32(DMA_STATUS_REG));
- dev_info(rdev->dev, " VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x%08X\n",
- RREG32(VM_CONTEXT1_PROTECTION_FAULT_ADDR));
- dev_info(rdev->dev, " VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n",
- RREG32(VM_CONTEXT1_PROTECTION_FAULT_STATUS));
- evergreen_mc_stop(rdev, &save);
- if (radeon_mc_wait_for_idle(rdev)) {
- dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
- }
/* Disable CP parsing/prefetching */
WREG32(CP_ME_CNTL, CP_ME_HALT | CP_PFP_HALT | CP_CE_HALT);
- /* dma0 */
- tmp = RREG32(DMA_RB_CNTL + DMA0_REGISTER_OFFSET);
- tmp &= ~DMA_RB_ENABLE;
- WREG32(DMA_RB_CNTL + DMA0_REGISTER_OFFSET, tmp);
-
- /* dma1 */
- tmp = RREG32(DMA_RB_CNTL + DMA1_REGISTER_OFFSET);
- tmp &= ~DMA_RB_ENABLE;
- WREG32(DMA_RB_CNTL + DMA1_REGISTER_OFFSET, tmp);
-
- /* Reset dma */
- WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA | SOFT_RESET_DMA1);
- RREG32(SRBM_SOFT_RESET);
- udelay(50);
- WREG32(SRBM_SOFT_RESET, 0);
-
/* reset all the gfx blocks */
grbm_reset = (SOFT_RESET_CP |
SOFT_RESET_CB |
@@ -2196,8 +2168,7 @@ static int si_gpu_soft_reset(struct radeon_device *rdev)
udelay(50);
WREG32(GRBM_SOFT_RESET, 0);
(void)RREG32(GRBM_SOFT_RESET);
- /* Wait a little for things to settle down */
- udelay(50);
+
dev_info(rdev->dev, " GRBM_STATUS=0x%08X\n",
RREG32(GRBM_STATUS));
dev_info(rdev->dev, " GRBM_STATUS2=0x%08X\n",
@@ -2208,15 +2179,75 @@ static int si_gpu_soft_reset(struct radeon_device *rdev)
RREG32(GRBM_STATUS_SE1));
dev_info(rdev->dev, " SRBM_STATUS=0x%08X\n",
RREG32(SRBM_STATUS));
+}
+
+static void si_gpu_soft_reset_dma(struct radeon_device *rdev)
+{
+ u32 tmp;
+
+ if (RREG32(DMA_STATUS_REG) & DMA_IDLE)
+ return;
+
dev_info(rdev->dev, " DMA_STATUS_REG = 0x%08X\n",
RREG32(DMA_STATUS_REG));
+
+ /* dma0 */
+ tmp = RREG32(DMA_RB_CNTL + DMA0_REGISTER_OFFSET);
+ tmp &= ~DMA_RB_ENABLE;
+ WREG32(DMA_RB_CNTL + DMA0_REGISTER_OFFSET, tmp);
+
+ /* dma1 */
+ tmp = RREG32(DMA_RB_CNTL + DMA1_REGISTER_OFFSET);
+ tmp &= ~DMA_RB_ENABLE;
+ WREG32(DMA_RB_CNTL + DMA1_REGISTER_OFFSET, tmp);
+
+ /* Reset dma */
+ WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA | SOFT_RESET_DMA1);
+ RREG32(SRBM_SOFT_RESET);
+ udelay(50);
+ WREG32(SRBM_SOFT_RESET, 0);
+
+ dev_info(rdev->dev, " DMA_STATUS_REG = 0x%08X\n",
+ RREG32(DMA_STATUS_REG));
+}
+
+static int si_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask)
+{
+ struct evergreen_mc_save save;
+
+ if (reset_mask == 0)
+ return 0;
+
+ dev_info(rdev->dev, "GPU softreset: 0x%08X\n", reset_mask);
+
+ dev_info(rdev->dev, " VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x%08X\n",
+ RREG32(VM_CONTEXT1_PROTECTION_FAULT_ADDR));
+ dev_info(rdev->dev, " VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n",
+ RREG32(VM_CONTEXT1_PROTECTION_FAULT_STATUS));
+
+ evergreen_mc_stop(rdev, &save);
+ if (radeon_mc_wait_for_idle(rdev)) {
+ dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
+ }
+
+ if (reset_mask & (RADEON_RESET_GFX | RADEON_RESET_COMPUTE))
+ si_gpu_soft_reset_gfx(rdev);
+
+ if (reset_mask & RADEON_RESET_DMA)
+ si_gpu_soft_reset_dma(rdev);
+
+ /* Wait a little for things to settle down */
+ udelay(50);
+
evergreen_mc_resume(rdev, &save);
return 0;
}
int si_asic_reset(struct radeon_device *rdev)
{
- return si_gpu_soft_reset(rdev);
+ return si_gpu_soft_reset(rdev, (RADEON_RESET_GFX |
+ RADEON_RESET_COMPUTE |
+ RADEON_RESET_DMA));
}
/* MC */

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