From d3cb781e83b39561f717358e95d357e53a0da720 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 18 Jan 2013 13:53:37 -0500 Subject: drm/radeon: rework GPU reset on r6xx/r7xx Update the code to better match the recommended programming sequence for soft reset. Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/r600.c | 249 +++++++++++++++++++++--------------------- 1 file changed, 127 insertions(+), 122 deletions(-) (limited to 'drivers/gpu/drm/radeon/r600.c') diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index a6208178a6f..083eeb0b4fd 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -1266,122 +1266,22 @@ void r600_set_bios_scratch_engine_hung(struct radeon_device *rdev, bool hung) WREG32(R600_BIOS_3_SCRATCH, tmp); } -/* We doesn't check that the GPU really needs a reset we simply do the - * reset, it's up to the caller to determine if the GPU needs one. We - * might add an helper function to check that. - */ -static void r600_gpu_soft_reset_gfx(struct radeon_device *rdev) +static void r600_print_gpu_status_regs(struct radeon_device *rdev) { - 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) | - S_008010_SH_BUSY(1) | S_008010_SPI03_BUSY(1) | - S_008010_SMX_BUSY(1) | S_008010_SC_BUSY(1) | - S_008010_PA_BUSY(1) | S_008010_DB03_BUSY(1) | - S_008010_CR_BUSY(1) | S_008010_CB03_BUSY(1) | - S_008010_GUI_ACTIVE(1); - u32 grbm2_busy_mask = S_008014_SPI0_BUSY(1) | S_008014_SPI1_BUSY(1) | - S_008014_SPI2_BUSY(1) | S_008014_SPI3_BUSY(1) | - S_008014_TA0_BUSY(1) | S_008014_TA1_BUSY(1) | - S_008014_TA2_BUSY(1) | S_008014_TA3_BUSY(1) | - S_008014_DB0_BUSY(1) | S_008014_DB1_BUSY(1) | - S_008014_DB2_BUSY(1) | S_008014_DB3_BUSY(1) | - S_008014_CB0_BUSY(1) | S_008014_CB1_BUSY(1) | - S_008014_CB2_BUSY(1) | S_008014_CB3_BUSY(1); - u32 tmp; - - if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE)) - return; - - 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", - RREG32(R_008014_GRBM_STATUS2)); - 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)); - dev_info(rdev->dev, " R_008678_CP_STALLED_STAT2 = 0x%08X\n", - RREG32(CP_STALLED_STAT2)); - dev_info(rdev->dev, " R_00867C_CP_BUSY_STAT = 0x%08X\n", - RREG32(CP_BUSY_STAT)); - dev_info(rdev->dev, " R_008680_CP_STAT = 0x%08X\n", - RREG32(CP_STAT)); - - /* Disable CP parsing/prefetching */ - WREG32(R_0086D8_CP_ME_CNTL, S_0086D8_CP_ME_HALT(1)); - - /* 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)) { - tmp = S_008020_SOFT_RESET_CR(1) | - S_008020_SOFT_RESET_DB(1) | - S_008020_SOFT_RESET_CB(1) | - S_008020_SOFT_RESET_PA(1) | - S_008020_SOFT_RESET_SC(1) | - S_008020_SOFT_RESET_SMX(1) | - S_008020_SOFT_RESET_SPI(1) | - S_008020_SOFT_RESET_SX(1) | - S_008020_SOFT_RESET_SH(1) | - S_008020_SOFT_RESET_TC(1) | - S_008020_SOFT_RESET_TA(1) | - S_008020_SOFT_RESET_VC(1) | - S_008020_SOFT_RESET_VGT(1); - dev_info(rdev->dev, " R_008020_GRBM_SOFT_RESET=0x%08X\n", tmp); - WREG32(R_008020_GRBM_SOFT_RESET, tmp); - RREG32(R_008020_GRBM_SOFT_RESET); - mdelay(15); - WREG32(R_008020_GRBM_SOFT_RESET, 0); - } - /* Reset CP (we always reset CP) */ - tmp = S_008020_SOFT_RESET_CP(1); - dev_info(rdev->dev, "R_008020_GRBM_SOFT_RESET=0x%08X\n", tmp); - WREG32(R_008020_GRBM_SOFT_RESET, tmp); - RREG32(R_008020_GRBM_SOFT_RESET); - mdelay(15); - WREG32(R_008020_GRBM_SOFT_RESET, 0); - dev_info(rdev->dev, " R_008010_GRBM_STATUS = 0x%08X\n", - RREG32(R_008010_GRBM_STATUS)); + RREG32(R_008010_GRBM_STATUS)); dev_info(rdev->dev, " R_008014_GRBM_STATUS2 = 0x%08X\n", - RREG32(R_008014_GRBM_STATUS2)); + RREG32(R_008014_GRBM_STATUS2)); dev_info(rdev->dev, " R_000E50_SRBM_STATUS = 0x%08X\n", - RREG32(R_000E50_SRBM_STATUS)); + RREG32(R_000E50_SRBM_STATUS)); dev_info(rdev->dev, " R_008674_CP_STALLED_STAT1 = 0x%08X\n", - RREG32(CP_STALLED_STAT1)); + RREG32(CP_STALLED_STAT1)); dev_info(rdev->dev, " R_008678_CP_STALLED_STAT2 = 0x%08X\n", - RREG32(CP_STALLED_STAT2)); + RREG32(CP_STALLED_STAT2)); dev_info(rdev->dev, " R_00867C_CP_BUSY_STAT = 0x%08X\n", - RREG32(CP_BUSY_STAT)); + 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); - + RREG32(CP_STAT)); dev_info(rdev->dev, " R_00D034_DMA_STATUS_REG = 0x%08X\n", RREG32(DMA_STATUS_REG)); } @@ -1389,9 +1289,12 @@ static void r600_gpu_soft_reset_dma(struct radeon_device *rdev) static int r600_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask) { struct rv515_mc_save save; + u32 grbm_soft_reset = 0, srbm_soft_reset = 0; + u32 tmp; + int ret = 0; if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE)) - reset_mask &= ~(RADEON_RESET_GFX | RADEON_RESET_COMPUTE); + reset_mask &= ~(RADEON_RESET_GFX | RADEON_RESET_COMPUTE | RADEON_RESET_CP); if (RREG32(DMA_STATUS_REG) & DMA_IDLE) reset_mask &= ~RADEON_RESET_DMA; @@ -1401,6 +1304,8 @@ static int r600_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask) dev_info(rdev->dev, "GPU softreset: 0x%08X\n", reset_mask); + r600_print_gpu_status_regs(rdev); + r600_set_bios_scratch_engine_hung(rdev, true); rv515_mc_stop(rdev, &save); @@ -1408,20 +1313,127 @@ static int r600_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask) 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); + /* Disable CP parsing/prefetching */ + if (rdev->family >= CHIP_RV770) + WREG32(R_0086D8_CP_ME_CNTL, S_0086D8_CP_ME_HALT(1) | S_0086D8_CP_PFP_HALT(1)); + else + WREG32(R_0086D8_CP_ME_CNTL, S_0086D8_CP_ME_HALT(1)); + + /* disable the RLC */ + WREG32(RLC_CNTL, 0); + + if (reset_mask & RADEON_RESET_DMA) { + /* Disable DMA */ + tmp = RREG32(DMA_RB_CNTL); + tmp &= ~DMA_RB_ENABLE; + WREG32(DMA_RB_CNTL, tmp); + } + + mdelay(50); + + if (reset_mask & (RADEON_RESET_GFX | RADEON_RESET_COMPUTE)) { + if (rdev->family >= CHIP_RV770) + grbm_soft_reset |= S_008020_SOFT_RESET_DB(1) | + S_008020_SOFT_RESET_CB(1) | + S_008020_SOFT_RESET_PA(1) | + S_008020_SOFT_RESET_SC(1) | + S_008020_SOFT_RESET_SPI(1) | + S_008020_SOFT_RESET_SX(1) | + S_008020_SOFT_RESET_SH(1) | + S_008020_SOFT_RESET_TC(1) | + S_008020_SOFT_RESET_TA(1) | + S_008020_SOFT_RESET_VC(1) | + S_008020_SOFT_RESET_VGT(1); + else + grbm_soft_reset |= S_008020_SOFT_RESET_CR(1) | + S_008020_SOFT_RESET_DB(1) | + S_008020_SOFT_RESET_CB(1) | + S_008020_SOFT_RESET_PA(1) | + S_008020_SOFT_RESET_SC(1) | + S_008020_SOFT_RESET_SMX(1) | + S_008020_SOFT_RESET_SPI(1) | + S_008020_SOFT_RESET_SX(1) | + S_008020_SOFT_RESET_SH(1) | + S_008020_SOFT_RESET_TC(1) | + S_008020_SOFT_RESET_TA(1) | + S_008020_SOFT_RESET_VC(1) | + S_008020_SOFT_RESET_VGT(1); + } + + if (reset_mask & RADEON_RESET_CP) { + grbm_soft_reset |= S_008020_SOFT_RESET_CP(1) | + S_008020_SOFT_RESET_VGT(1); - if (reset_mask & RADEON_RESET_DMA) - r600_gpu_soft_reset_dma(rdev); + srbm_soft_reset |= S_000E60_SOFT_RESET_GRBM(1); + } + + if (reset_mask & RADEON_RESET_DMA) { + if (rdev->family >= CHIP_RV770) + srbm_soft_reset |= RV770_SOFT_RESET_DMA; + else + srbm_soft_reset |= SOFT_RESET_DMA; + } + + if (grbm_soft_reset) { + tmp = RREG32(R_008020_GRBM_SOFT_RESET); + tmp |= grbm_soft_reset; + dev_info(rdev->dev, "R_008020_GRBM_SOFT_RESET=0x%08X\n", tmp); + WREG32(R_008020_GRBM_SOFT_RESET, tmp); + tmp = RREG32(R_008020_GRBM_SOFT_RESET); + + udelay(50); + + tmp &= ~grbm_soft_reset; + WREG32(R_008020_GRBM_SOFT_RESET, tmp); + tmp = RREG32(R_008020_GRBM_SOFT_RESET); + } + + if (srbm_soft_reset) { + tmp = RREG32(SRBM_SOFT_RESET); + tmp |= srbm_soft_reset; + dev_info(rdev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp); + WREG32(SRBM_SOFT_RESET, tmp); + tmp = RREG32(SRBM_SOFT_RESET); + + udelay(50); + + tmp &= ~srbm_soft_reset; + WREG32(SRBM_SOFT_RESET, tmp); + tmp = RREG32(SRBM_SOFT_RESET); + } /* Wait a little for things to settle down */ mdelay(1); rv515_mc_resume(rdev, &save); + udelay(50); - r600_set_bios_scratch_engine_hung(rdev, false); +#if 0 + if (reset_mask & (RADEON_RESET_GFX | RADEON_RESET_COMPUTE | RADEON_RESET_CP)) { + if (RREG32(GRBM_STATUS) & GUI_ACTIVE) + ret = -EAGAIN; + } - return 0; + if (reset_mask & RADEON_RESET_DMA) { + if (!(RREG32(DMA_STATUS_REG) & DMA_IDLE)) + ret = -EAGAIN; + } +#endif + + if (!ret) + r600_set_bios_scratch_engine_hung(rdev, false); + + r600_print_gpu_status_regs(rdev); + + return ret; +} + +int r600_asic_reset(struct radeon_device *rdev) +{ + return r600_gpu_soft_reset(rdev, (RADEON_RESET_GFX | + RADEON_RESET_COMPUTE | + RADEON_RESET_DMA | + RADEON_RESET_CP)); } bool r600_gpu_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring) @@ -1465,13 +1477,6 @@ bool r600_dma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring) return radeon_ring_test_lockup(rdev, ring); } -int r600_asic_reset(struct radeon_device *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, u32 tiling_pipe_num, u32 max_rb_num, -- cgit v1.2.3