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drm/radeon: switch to a finer grained reset for r6xx/7xx 

No change in functionality as we currently set all the reset
flags.

Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Alex Deucher 2013-01-03 12:20:35 -05:00
parent ec46c76d50
commit 71e3d1578c
1 changed files with 58 additions and 27 deletions
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85
drivers/gpu/drm/radeon/r600.c
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@ -1258,9 +1258,8 @@ void r600_vram_scratch_fini(struct radeon_device *rdev)
* reset, it's up to the caller to determine if the GPU needs one. We
* might add an helper function to check that.
*/
static int r600_gpu_soft_reset(struct radeon_device *rdev)
static void r600_gpu_soft_reset_gfx(struct radeon_device *rdev)
{
struct rv515_mc_save save;
u32 grbm_busy_mask = S_008010_VC_BUSY(1) | S_008010_VGT_BUSY_NO_DMA(1) |
S_008010_VGT_BUSY(1) | S_008010_TA03_BUSY(1) |
S_008010_TC_BUSY(1) | S_008010_SX_BUSY(1) |
@ -1280,9 +1279,8 @@ static int r600_gpu_soft_reset(struct radeon_device *rdev)
u32 tmp;
if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE))
return 0;
return;
dev_info(rdev->dev, "GPU softreset \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",
@ -1297,30 +1295,10 @@ static int r600_gpu_soft_reset(struct radeon_device *rdev)
RREG32(CP_BUSY_STAT));
dev_info(rdev->dev, " R_008680_CP_STAT = 0x%08X\n",
RREG32(CP_STAT));
dev_info(rdev->dev, " R_00D034_DMA_STATUS_REG = 0x%08X\n",
RREG32(DMA_STATUS_REG));
rv515_mc_stop(rdev, &save);
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)) {
@ -1350,8 +1328,7 @@ static int r600_gpu_soft_reset(struct radeon_device *rdev)
RREG32(R_008020_GRBM_SOFT_RESET);
mdelay(15);
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",
RREG32(R_008010_GRBM_STATUS));
dev_info(rdev->dev, " R_008014_GRBM_STATUS2 = 0x%08X\n",
@ -1366,8 +1343,60 @@ static int r600_gpu_soft_reset(struct radeon_device *rdev)
RREG32(CP_BUSY_STAT));
dev_info(rdev->dev, " R_008680_CP_STAT = 0x%08X\n",
RREG32(CP_STAT));
}
static void r600_gpu_soft_reset_dma(struct radeon_device *rdev)
{
u32 tmp;
if (RREG32(DMA_STATUS_REG) & DMA_IDLE)
return;
dev_info(rdev->dev, " R_00D034_DMA_STATUS_REG = 0x%08X\n",
RREG32(DMA_STATUS_REG));
/* 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);
dev_info(rdev->dev, " R_00D034_DMA_STATUS_REG = 0x%08X\n",
RREG32(DMA_STATUS_REG));
}
static int r600_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask)
{
struct rv515_mc_save save;
if (reset_mask == 0)
return 0;
dev_info(rdev->dev, "GPU softreset: 0x%08X\n", reset_mask);
rv515_mc_stop(rdev, &save);
if (r600_mc_wait_for_idle(rdev)) {
dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
}
if (reset_mask & (RADEON_RESET_GFX | RADEON_RESET_COMPUTE))
r600_gpu_soft_reset_gfx(rdev);
if (reset_mask & RADEON_RESET_DMA)
r600_gpu_soft_reset_dma(rdev);
/* Wait a little for things to settle down */
mdelay(1);
rv515_mc_resume(rdev, &save);
return 0;
}
@ -1415,7 +1444,9 @@ bool r600_dma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring)
int r600_asic_reset(struct radeon_device *rdev)
{
return r600_gpu_soft_reset(rdev);
return r600_gpu_soft_reset(rdev, (RADEON_RESET_GFX |
RADEON_RESET_COMPUTE |
RADEON_RESET_DMA));
}
u32 r6xx_remap_render_backend(struct radeon_device *rdev,