From c476dde2eda8c3e1af676fe3702b9fce98904cfb Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 20 Mar 2012 17:18:12 -0400 Subject: [PATCH] drm/radeon/kms: Add support for SI GPU reset Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/si.c | 100 +++++++++++++++++++++++++++++++++++ drivers/gpu/drm/radeon/sid.h | 70 ++++++++++++++++++++++++ 2 files changed, 170 insertions(+) diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index dd9e7d3d23be..58ad9008cf05 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -29,6 +29,8 @@ #include "atom.h" extern void evergreen_fix_pci_max_read_req_size(struct radeon_device *rdev); +extern void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *save); +extern void evergreen_mc_resume(struct radeon_device *rdev, struct evergreen_mc_save *save); /* get temperature in millidegrees */ int si_get_temp(struct radeon_device *rdev) @@ -1508,3 +1510,101 @@ static void si_gpu_init(struct radeon_device *rdev) udelay(50); } + +bool si_gpu_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring) +{ + u32 srbm_status; + u32 grbm_status, grbm_status2; + u32 grbm_status_se0, grbm_status_se1; + struct r100_gpu_lockup *lockup = &rdev->config.si.lockup; + int r; + + srbm_status = RREG32(SRBM_STATUS); + grbm_status = RREG32(GRBM_STATUS); + grbm_status2 = RREG32(GRBM_STATUS2); + grbm_status_se0 = RREG32(GRBM_STATUS_SE0); + grbm_status_se1 = RREG32(GRBM_STATUS_SE1); + if (!(grbm_status & GUI_ACTIVE)) { + r100_gpu_lockup_update(lockup, ring); + return false; + } + /* force CP activities */ + r = radeon_ring_lock(rdev, ring, 2); + if (!r) { + /* PACKET2 NOP */ + radeon_ring_write(ring, 0x80000000); + radeon_ring_write(ring, 0x80000000); + radeon_ring_unlock_commit(rdev, ring); + } + /* XXX deal with CP0,1,2 */ + ring->rptr = RREG32(ring->rptr_reg); + return r100_gpu_cp_is_lockup(rdev, lockup, ring); +} + +static int si_gpu_soft_reset(struct radeon_device *rdev) +{ + struct evergreen_mc_save save; + u32 grbm_reset = 0; + + if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE)) + return 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_STATUS2=0x%08X\n", + RREG32(GRBM_STATUS2)); + 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 (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); + + /* reset all the gfx blocks */ + grbm_reset = (SOFT_RESET_CP | + SOFT_RESET_CB | + SOFT_RESET_DB | + SOFT_RESET_GDS | + SOFT_RESET_PA | + SOFT_RESET_SC | + SOFT_RESET_SPI | + SOFT_RESET_SX | + SOFT_RESET_TC | + SOFT_RESET_TA | + SOFT_RESET_VGT | + SOFT_RESET_IA); + + 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); + /* 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", + RREG32(GRBM_STATUS2)); + 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_resume(rdev, &save); + return 0; +} + +int si_asic_reset(struct radeon_device *rdev) +{ + return si_gpu_soft_reset(rdev); +} + diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h index cf06dcc9ba96..4c6ff1c8b5ed 100644 --- a/drivers/gpu/drm/radeon/sid.h +++ b/drivers/gpu/drm/radeon/sid.h @@ -52,6 +52,8 @@ #define DMIF_ADDR_CONFIG 0xBD4 +#define SRBM_STATUS 0xE50 + #define CC_SYS_RB_BACKEND_DISABLE 0xe80 #define GC_USER_SYS_RB_BACKEND_DISABLE 0xe84 @@ -102,6 +104,74 @@ #define GRBM_CNTL 0x8000 #define GRBM_READ_TIMEOUT(x) ((x) << 0) +#define GRBM_STATUS2 0x8008 +#define RLC_RQ_PENDING (1 << 0) +#define RLC_BUSY (1 << 8) +#define TC_BUSY (1 << 9) + +#define GRBM_STATUS 0x8010 +#define CMDFIFO_AVAIL_MASK 0x0000000F +#define RING2_RQ_PENDING (1 << 4) +#define SRBM_RQ_PENDING (1 << 5) +#define RING1_RQ_PENDING (1 << 6) +#define CF_RQ_PENDING (1 << 7) +#define PF_RQ_PENDING (1 << 8) +#define GDS_DMA_RQ_PENDING (1 << 9) +#define GRBM_EE_BUSY (1 << 10) +#define DB_CLEAN (1 << 12) +#define CB_CLEAN (1 << 13) +#define TA_BUSY (1 << 14) +#define GDS_BUSY (1 << 15) +#define VGT_BUSY (1 << 17) +#define IA_BUSY_NO_DMA (1 << 18) +#define IA_BUSY (1 << 19) +#define SX_BUSY (1 << 20) +#define SPI_BUSY (1 << 22) +#define BCI_BUSY (1 << 23) +#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_DB_CLEAN (1 << 1) +#define SE_CB_CLEAN (1 << 2) +#define SE_BCI_BUSY (1 << 22) +#define SE_VGT_BUSY (1 << 23) +#define SE_PA_BUSY (1 << 24) +#define SE_TA_BUSY (1 << 25) +#define SE_SX_BUSY (1 << 26) +#define SE_SPI_BUSY (1 << 27) +#define SE_SC_BUSY (1 << 29) +#define SE_DB_BUSY (1 << 30) +#define SE_CB_BUSY (1 << 31) + +#define GRBM_SOFT_RESET 0x8020 +#define SOFT_RESET_CP (1 << 0) +#define SOFT_RESET_CB (1 << 1) +#define SOFT_RESET_RLC (1 << 2) +#define SOFT_RESET_DB (1 << 3) +#define SOFT_RESET_GDS (1 << 4) +#define SOFT_RESET_PA (1 << 5) +#define SOFT_RESET_SC (1 << 6) +#define SOFT_RESET_BCI (1 << 7) +#define SOFT_RESET_SPI (1 << 8) +#define SOFT_RESET_SX (1 << 10) +#define SOFT_RESET_TC (1 << 11) +#define SOFT_RESET_TA (1 << 12) +#define SOFT_RESET_VGT (1 << 14) +#define SOFT_RESET_IA (1 << 15) + +#define CP_ME_CNTL 0x86D8 +#define CP_CE_HALT (1 << 24) +#define CP_PFP_HALT (1 << 26) +#define CP_ME_HALT (1 << 28) + +#define CP_RB0_RPTR 0x8700 + #define CP_QUEUE_THRESHOLDS 0x8760 #define ROQ_IB1_START(x) ((x) << 0) #define ROQ_IB2_START(x) ((x) << 8) -- GitLab