From: Jerome Glisse <jgli...@redhat.com>
This try to reset the dma engine when performing gpu reset. Hopefully
bringing back the gpu dma engine in sane state.
Signed-off-by: Jerome Glisse <jglisse at redhat.com>
---
drivers/gpu/drm/radeon/evergreen.c | 30 +++++++++++++++++++++---------
drivers/gpu/drm/radeon/evergreend.h | 10 +++++++++-
drivers/gpu/drm/radeon/ni.c | 30 +++++++++++++++++++++---------
drivers/gpu/drm/radeon/nid.h | 2 +-
drivers/gpu/drm/radeon/r600.c | 28 ++++++++++++++++++++++------
5 files changed, 74 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/radeon/evergreen.c
b/drivers/gpu/drm/radeon/evergreen.c
index 6dc9ee7..f92f6bb 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2309,19 +2309,19 @@ bool evergreen_gpu_is_lockup(struct radeon_device
*rdev, struct radeon_ring *rin
static int evergreen_gpu_soft_reset(struct radeon_device *rdev)
{
struct evergreen_mc_save save;
- u32 grbm_reset = 0;
+ u32 grbm_reset = 0, tmp;
if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE))
return 0;
dev_info(rdev->dev, "GPU softreset \n");
- dev_info(rdev->dev, " GRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS = 0x%08X\n",
RREG32(GRBM_STATUS));
- dev_info(rdev->dev, " GRBM_STATUS_SE0=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS_SE0 = 0x%08X\n",
RREG32(GRBM_STATUS_SE0));
- dev_info(rdev->dev, " GRBM_STATUS_SE1=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS_SE1 = 0x%08X\n",
RREG32(GRBM_STATUS_SE1));
- dev_info(rdev->dev, " SRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " SRBM_STATUS = 0x%08X\n",
RREG32(SRBM_STATUS));
dev_info(rdev->dev, " R_008674_CP_STALLED_STAT1 = 0x%08X\n",
RREG32(CP_STALLED_STAT1));
@@ -2337,9 +2337,21 @@ static int evergreen_gpu_soft_reset(struct radeon_device
*rdev)
if (evergreen_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);
+ /* Disable DMA */
+ tmp = RREG32(DMA_RB_CNTL);
+ tmp &= ~DMA_RB_ENABLE;
+ WREG32(DMA_RB_CNTL, tmp);
+
+ /* Reset dma */
+ WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA);
+ RREG32(SRBM_SOFT_RESET);
+ udelay(50);
+ WREG32(SRBM_SOFT_RESET, 0);
+
/* reset all the gfx blocks */
grbm_reset = (SOFT_RESET_CP |
SOFT_RESET_CB |
@@ -2362,13 +2374,13 @@ static int evergreen_gpu_soft_reset(struct
radeon_device *rdev)
(void)RREG32(GRBM_SOFT_RESET);
/* Wait a little for things to settle down */
udelay(50);
- dev_info(rdev->dev, " GRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS = 0x%08X\n",
RREG32(GRBM_STATUS));
- dev_info(rdev->dev, " GRBM_STATUS_SE0=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS_SE0 = 0x%08X\n",
RREG32(GRBM_STATUS_SE0));
- dev_info(rdev->dev, " GRBM_STATUS_SE1=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS_SE1 = 0x%08X\n",
RREG32(GRBM_STATUS_SE1));
- dev_info(rdev->dev, " SRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " SRBM_STATUS = 0x%08X\n",
RREG32(SRBM_STATUS));
dev_info(rdev->dev, " R_008674_CP_STALLED_STAT1 = 0x%08X\n",
RREG32(CP_STALLED_STAT1));
diff --git a/drivers/gpu/drm/radeon/evergreend.h
b/drivers/gpu/drm/radeon/evergreend.h
index f82f98a..5786a32 100644
--- a/drivers/gpu/drm/radeon/evergreend.h
+++ b/drivers/gpu/drm/radeon/evergreend.h
@@ -742,8 +742,9 @@
#define SOFT_RESET_ROM (1 << 14)
#define SOFT_RESET_SEM (1 << 15)
#define SOFT_RESET_VMC (1 << 17)
+#define SOFT_RESET_DMA (1 << 20)
#define SOFT_RESET_TST (1 << 21)
-#define SOFT_RESET_REGBB (1 << 22)
+#define SOFT_RESET_REGBB (1 << 22)
#define SOFT_RESET_ORB (1 << 23)
/* display watermarks */
@@ -2028,6 +2029,13 @@
#define CAYMAN_PACKET3_DEALLOC_STATE 0x14
/* DMA regs common on r6xx/r7xx/evergreen/ni */
+#define DMA_RB_CNTL 0xd000
+# define DMA_RB_ENABLE (1 << 0)
+# define DMA_RB_SIZE(x) ((x) << 1) /* log2 */
+# define DMA_RB_SWAP_ENABLE (1 << 9) /* 8IN32 */
+# define DMA_RPTR_WRITEBACK_ENABLE (1 << 12)
+# define DMA_RPTR_WRITEBACK_SWAP_ENABLE (1 << 13) /* 8IN32
*/
+# define DMA_RPTR_WRITEBACK_TIMER(x) ((x) << 16) /* log2
*/
#define DMA_STATUS_REG 0xd034
#endif
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 6dae387..e67d5f6 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1309,19 +1309,19 @@ void cayman_dma_fini(struct radeon_device *rdev)
static int cayman_gpu_soft_reset(struct radeon_device *rdev)
{
struct evergreen_mc_save save;
- u32 grbm_reset = 0;
+ u32 grbm_reset = 0, tmp;
if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE))
return 0;
dev_info(rdev->dev, "GPU softreset \n");
- dev_info(rdev->dev, " GRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS = 0x%08X\n",
RREG32(GRBM_STATUS));
- dev_info(rdev->dev, " GRBM_STATUS_SE0=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS_SE0 = 0x%08X\n",
RREG32(GRBM_STATUS_SE0));
- dev_info(rdev->dev, " GRBM_STATUS_SE1=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS_SE1 = 0x%08X\n",
RREG32(GRBM_STATUS_SE1));
- dev_info(rdev->dev, " SRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " SRBM_STATUS = 0x%08X\n",
RREG32(SRBM_STATUS));
dev_info(rdev->dev, " R_008674_CP_STALLED_STAT1 = 0x%08X\n",
RREG32(CP_STALLED_STAT1));
@@ -1346,9 +1346,21 @@ static int cayman_gpu_soft_reset(struct radeon_device
*rdev)
if (evergreen_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);
+ /* Disable DMA */
+ tmp = RREG32(DMA_RB_CNTL);
+ tmp &= ~DMA_RB_ENABLE;
+ WREG32(DMA_RB_CNTL, tmp);
+
+ /* Reset dma */
+ WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA);
+ RREG32(SRBM_SOFT_RESET);
+ udelay(50);
+ WREG32(SRBM_SOFT_RESET, 0);
+
/* reset all the gfx blocks */
grbm_reset = (SOFT_RESET_CP |
SOFT_RESET_CB |
@@ -1373,13 +1385,13 @@ static int cayman_gpu_soft_reset(struct radeon_device
*rdev)
/* Wait a little for things to settle down */
udelay(50);
- dev_info(rdev->dev, " GRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS = 0x%08X\n",
RREG32(GRBM_STATUS));
- dev_info(rdev->dev, " GRBM_STATUS_SE0=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS_SE0 = 0x%08X\n",
RREG32(GRBM_STATUS_SE0));
- dev_info(rdev->dev, " GRBM_STATUS_SE1=0x%08X\n",
+ dev_info(rdev->dev, " GRBM_STATUS_SE1 = 0x%08X\n",
RREG32(GRBM_STATUS_SE1));
- dev_info(rdev->dev, " SRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " SRBM_STATUS = 0x%08X\n",
RREG32(SRBM_STATUS));
dev_info(rdev->dev, " R_008674_CP_STALLED_STAT1 = 0x%08X\n",
RREG32(CP_STALLED_STAT1));
diff --git a/drivers/gpu/drm/radeon/nid.h b/drivers/gpu/drm/radeon/nid.h
index 22a62c6..48e5022 100644
--- a/drivers/gpu/drm/radeon/nid.h
+++ b/drivers/gpu/drm/radeon/nid.h
@@ -65,7 +65,7 @@
#define SOFT_RESET_VMC (1 << 17)
#define SOFT_RESET_DMA (1 << 20)
#define SOFT_RESET_TST (1 << 21)
-#define SOFT_RESET_REGBB (1 << 22)
+#define SOFT_RESET_REGBB (1 << 22)
#define SOFT_RESET_ORB (1 << 23)
#define VM_CONTEXT0_REQUEST_RESPONSE 0x1470
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 4605551..95daff2 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1283,11 +1283,11 @@ static int r600_gpu_soft_reset(struct radeon_device
*rdev)
return 0;
dev_info(rdev->dev, "GPU softreset \n");
- dev_info(rdev->dev, " R_008010_GRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " R_008010_GRBM_STATUS = 0x%08X\n",
RREG32(R_008010_GRBM_STATUS));
- dev_info(rdev->dev, " R_008014_GRBM_STATUS2=0x%08X\n",
+ dev_info(rdev->dev, " R_008014_GRBM_STATUS2 = 0x%08X\n",
RREG32(R_008014_GRBM_STATUS2));
- dev_info(rdev->dev, " R_000E50_SRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " R_000E50_SRBM_STATUS = 0x%08X\n",
RREG32(R_000E50_SRBM_STATUS));
dev_info(rdev->dev, " R_008674_CP_STALLED_STAT1 = 0x%08X\n",
RREG32(CP_STALLED_STAT1));
@@ -1303,8 +1303,24 @@ static int r600_gpu_soft_reset(struct radeon_device
*rdev)
if (r600_mc_wait_for_idle(rdev)) {
dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
}
+
/* Disable CP parsing/prefetching */
WREG32(R_0086D8_CP_ME_CNTL, S_0086D8_CP_ME_HALT(1));
+
+ /* Disable DMA */
+ tmp = RREG32(DMA_RB_CNTL);
+ tmp &= ~DMA_RB_ENABLE;
+ WREG32(DMA_RB_CNTL, tmp);
+
+ /* Reset dma */
+ if (rdev->family >= CHIP_RV770)
+ WREG32(SRBM_SOFT_RESET, RV770_SOFT_RESET_DMA);
+ else
+ WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA);
+ RREG32(SRBM_SOFT_RESET);
+ udelay(50);
+ WREG32(SRBM_SOFT_RESET, 0);
+
/* Check if any of the rendering block is busy and reset it */
if ((RREG32(R_008010_GRBM_STATUS) & grbm_busy_mask) ||
(RREG32(R_008014_GRBM_STATUS2) & grbm2_busy_mask)) {
@@ -1336,11 +1352,11 @@ static int r600_gpu_soft_reset(struct radeon_device
*rdev)
WREG32(R_008020_GRBM_SOFT_RESET, 0);
/* Wait a little for things to settle down */
mdelay(1);
- dev_info(rdev->dev, " R_008010_GRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " R_008010_GRBM_STATUS = 0x%08X\n",
RREG32(R_008010_GRBM_STATUS));
- dev_info(rdev->dev, " R_008014_GRBM_STATUS2=0x%08X\n",
+ dev_info(rdev->dev, " R_008014_GRBM_STATUS2 = 0x%08X\n",
RREG32(R_008014_GRBM_STATUS2));
- dev_info(rdev->dev, " R_000E50_SRBM_STATUS=0x%08X\n",
+ dev_info(rdev->dev, " R_000E50_SRBM_STATUS = 0x%08X\n",
RREG32(R_000E50_SRBM_STATUS));
dev_info(rdev->dev, " R_008674_CP_STALLED_STAT1 = 0x%08X\n",
RREG32(CP_STALLED_STAT1));
--
1.7.11.7
