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drm/radeon/kms/evergreen: add soft reset function
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Works pretty similarly to r6xx/r7xx.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored and Dave Airlie committed Apr 9, 2010
1 parent 0fcdb61 commit 747943e
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Showing 2 changed files with 132 additions and 4 deletions.
73 changes: 71 additions & 2 deletions drivers/gpu/drm/radeon/evergreen.c
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Original file line number Diff line number Diff line change
Expand Up @@ -511,12 +511,81 @@ bool evergreen_gpu_is_lockup(struct radeon_device *rdev)
return false;
}

int evergreen_asic_reset(struct radeon_device *rdev)
static int evergreen_gpu_soft_reset(struct radeon_device *rdev)
{
/* FIXME: implement for evergreen */
struct evergreen_mc_save save;
u32 srbm_reset = 0;
u32 grbm_reset = 0;

dev_info(rdev->dev, "GPU softreset \n");
dev_info(rdev->dev, " GRBM_STATUS=0x%08X\n",
RREG32(GRBM_STATUS));
dev_info(rdev->dev, " GRBM_STATUS_SE0=0x%08X\n",
RREG32(GRBM_STATUS_SE0));
dev_info(rdev->dev, " GRBM_STATUS_SE1=0x%08X\n",
RREG32(GRBM_STATUS_SE1));
dev_info(rdev->dev, " SRBM_STATUS=0x%08X\n",
RREG32(SRBM_STATUS));
evergreen_mc_stop(rdev, &save);
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);

/* reset all the gfx blocks */
grbm_reset = (SOFT_RESET_CP |
SOFT_RESET_CB |
SOFT_RESET_DB |
SOFT_RESET_PA |
SOFT_RESET_SC |
SOFT_RESET_SPI |
SOFT_RESET_SH |
SOFT_RESET_SX |
SOFT_RESET_TC |
SOFT_RESET_TA |
SOFT_RESET_VC |
SOFT_RESET_VGT);

dev_info(rdev->dev, " GRBM_SOFT_RESET=0x%08X\n", grbm_reset);
WREG32(GRBM_SOFT_RESET, grbm_reset);
(void)RREG32(GRBM_SOFT_RESET);
udelay(50);
WREG32(GRBM_SOFT_RESET, 0);
(void)RREG32(GRBM_SOFT_RESET);

/* reset all the system blocks */
srbm_reset = SRBM_SOFT_RESET_ALL_MASK;

dev_info(rdev->dev, " SRBM_SOFT_RESET=0x%08X\n", srbm_reset);
WREG32(SRBM_SOFT_RESET, srbm_reset);
(void)RREG32(SRBM_SOFT_RESET);
udelay(50);
WREG32(SRBM_SOFT_RESET, 0);
(void)RREG32(SRBM_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_STATUS_SE0=0x%08X\n",
RREG32(GRBM_STATUS_SE0));
dev_info(rdev->dev, " GRBM_STATUS_SE1=0x%08X\n",
RREG32(GRBM_STATUS_SE1));
dev_info(rdev->dev, " SRBM_STATUS=0x%08X\n",
RREG32(SRBM_STATUS));
/* After reset we need to reinit the asic as GPU often endup in an
* incoherent state.
*/
atom_asic_init(rdev->mode_info.atom_context);
evergreen_mc_resume(rdev, &save);
return 0;
}

int evergreen_asic_reset(struct radeon_device *rdev)
{
return evergreen_gpu_soft_reset(rdev);
}

static int evergreen_startup(struct radeon_device *rdev)
{
int r;
Expand Down
63 changes: 61 additions & 2 deletions drivers/gpu/drm/radeon/evergreend.h
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Original file line number Diff line number Diff line change
Expand Up @@ -78,10 +78,53 @@
#define GRBM_CNTL 0x8000
#define GRBM_READ_TIMEOUT(x) ((x) << 0)
#define GRBM_SOFT_RESET 0x8020
#define SOFT_RESET_CP (1<<0)
#define SOFT_RESET_CP (1 << 0)
#define SOFT_RESET_CB (1 << 1)
#define SOFT_RESET_DB (1 << 3)
#define SOFT_RESET_PA (1 << 5)
#define SOFT_RESET_SC (1 << 6)
#define SOFT_RESET_SPI (1 << 8)
#define SOFT_RESET_SH (1 << 9)
#define SOFT_RESET_SX (1 << 10)
#define SOFT_RESET_TC (1 << 11)
#define SOFT_RESET_TA (1 << 12)
#define SOFT_RESET_VC (1 << 13)
#define SOFT_RESET_VGT (1 << 14)

#define GRBM_STATUS 0x8010
#define CMDFIFO_AVAIL_MASK 0x0000000F
#define GUI_ACTIVE (1<<31)
#define SRBM_RQ_PENDING (1 << 5)
#define CF_RQ_PENDING (1 << 7)
#define PF_RQ_PENDING (1 << 8)
#define GRBM_EE_BUSY (1 << 10)
#define SX_CLEAN (1 << 11)
#define DB_CLEAN (1 << 12)
#define CB_CLEAN (1 << 13)
#define TA_BUSY (1 << 14)
#define VGT_BUSY_NO_DMA (1 << 16)
#define VGT_BUSY (1 << 17)
#define SX_BUSY (1 << 20)
#define SH_BUSY (1 << 21)
#define SPI_BUSY (1 << 22)
#define SC_BUSY (1 << 24)
#define PA_BUSY (1 << 25)
#define DB_BUSY (1 << 26)
#define CP_COHERENCY_BUSY (1 << 28)
#define CP_BUSY (1 << 29)
#define CB_BUSY (1 << 30)
#define GUI_ACTIVE (1 << 31)
#define GRBM_STATUS_SE0 0x8014
#define GRBM_STATUS_SE1 0x8018
#define SE_SX_CLEAN (1 << 0)
#define SE_DB_CLEAN (1 << 1)
#define SE_CB_CLEAN (1 << 2)
#define SE_TA_BUSY (1 << 25)
#define SE_SX_BUSY (1 << 26)
#define SE_SPI_BUSY (1 << 27)
#define SE_SH_BUSY (1 << 28)
#define SE_SC_BUSY (1 << 29)
#define SE_DB_BUSY (1 << 30)
#define SE_CB_BUSY (1 << 31)

#define HDP_HOST_PATH_CNTL 0x2C00
#define HDP_NONSURFACE_BASE 0x2C04
Expand Down Expand Up @@ -266,5 +309,21 @@
#define WAIT_UNTIL 0x8040

#define SRBM_STATUS 0x0E50
#define SRBM_SOFT_RESET 0x0E60
#define SRBM_SOFT_RESET_ALL_MASK 0x00FEEFA6
#define SOFT_RESET_BIF (1 << 1)
#define SOFT_RESET_CG (1 << 2)
#define SOFT_RESET_DC (1 << 5)
#define SOFT_RESET_GRBM (1 << 8)
#define SOFT_RESET_HDP (1 << 9)
#define SOFT_RESET_IH (1 << 10)
#define SOFT_RESET_MC (1 << 11)
#define SOFT_RESET_RLC (1 << 13)
#define SOFT_RESET_ROM (1 << 14)
#define SOFT_RESET_SEM (1 << 15)
#define SOFT_RESET_VMC (1 << 17)
#define SOFT_RESET_TST (1 << 21)
#define SOFT_RESET_REGBB (1 << 22)
#define SOFT_RESET_ORB (1 << 23)

#endif

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