From 2b8e17e8e5928b95f2ebc80f5270a084459e90a4 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 20 Dec 2010 12:35:03 -0500 Subject: [PATCH] drm/radeon/kms: fix evergreen asic reset commit 9f0c4f9c2f835eee1bbb93f96bf9483d56f1892b upstream. Only reset the grbm blocks, srbm tends to lock the GPU if not done properly and in most cases is not necessary. Also, no need to call asic init after reset the grbm blocks. Signed-off-by: Alex Deucher Reviewed-by: Jerome Glisse Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/evergreen.c | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index ef8bbd97cd08..9e3dd2fd2766 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -1423,7 +1423,6 @@ bool evergreen_gpu_is_lockup(struct radeon_device *rdev) static int evergreen_gpu_soft_reset(struct radeon_device *rdev) { struct evergreen_mc_save save; - u32 srbm_reset = 0; u32 grbm_reset = 0; dev_info(rdev->dev, "GPU softreset \n"); @@ -1462,16 +1461,6 @@ static int evergreen_gpu_soft_reset(struct radeon_device *rdev) 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", @@ -1482,10 +1471,6 @@ static int evergreen_gpu_soft_reset(struct radeon_device *rdev) 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; } -- 2.34.1