From 81cc35bfc19ebe4b823396fe4fef67a923360916 Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Thu, 1 Oct 2009 18:02:12 +0200 Subject: drm/radeon/kms: Fix R600 write back buffer This split write back buffer handling into 3 functions, wb_fini for cleanup, wb_enable/wb_disable for enabling/disabling write back used for suspend/resume. This should fix potential issue of letting the write back active before suspending. We need to allocate memory in wb_enable because we can only allocate once GART is running. Signed-off-by: Jerome Glisse Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/r600.c | 67 ++++++++++++++++++++--------------------- drivers/gpu/drm/radeon/radeon.h | 3 +- drivers/gpu/drm/radeon/rv770.c | 8 ++--- 3 files changed, 39 insertions(+), 39 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 17fff7b6e591..11fa801a2c52 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -1350,32 +1350,47 @@ int r600_ring_test(struct radeon_device *rdev) return r; } -/* - * Writeback - */ -int r600_wb_init(struct radeon_device *rdev) +void r600_wb_disable(struct radeon_device *rdev) +{ + WREG32(SCRATCH_UMSK, 0); + if (rdev->wb.wb_obj) { + radeon_object_kunmap(rdev->wb.wb_obj); + radeon_object_unpin(rdev->wb.wb_obj); + } +} + +void r600_wb_fini(struct radeon_device *rdev) +{ + r600_wb_disable(rdev); + if (rdev->wb.wb_obj) { + radeon_object_unref(&rdev->wb.wb_obj); + rdev->wb.wb = NULL; + rdev->wb.wb_obj = NULL; + } +} + +int r600_wb_enable(struct radeon_device *rdev) { int r; if (rdev->wb.wb_obj == NULL) { - r = radeon_object_create(rdev, NULL, 4096, - true, - RADEON_GEM_DOMAIN_GTT, - false, &rdev->wb.wb_obj); + r = radeon_object_create(rdev, NULL, 4096, true, + RADEON_GEM_DOMAIN_GTT, false, &rdev->wb.wb_obj); if (r) { - DRM_ERROR("radeon: failed to create WB buffer (%d).\n", r); + dev_warn(rdev->dev, "failed to create WB buffer (%d).\n", r); return r; } - r = radeon_object_pin(rdev->wb.wb_obj, - RADEON_GEM_DOMAIN_GTT, - &rdev->wb.gpu_addr); + r = radeon_object_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT, + &rdev->wb.gpu_addr); if (r) { - DRM_ERROR("radeon: failed to pin WB buffer (%d).\n", r); + dev_warn(rdev->dev, "failed to pin WB buffer (%d).\n", r); + r600_wb_fini(rdev); return r; } r = radeon_object_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb); if (r) { - DRM_ERROR("radeon: failed to map WB buffer (%d).\n", r); + dev_warn(rdev->dev, "failed to map WB buffer (%d).\n", r); + r600_wb_fini(rdev); return r; } } @@ -1386,21 +1401,6 @@ int r600_wb_init(struct radeon_device *rdev) return 0; } -void r600_wb_fini(struct radeon_device *rdev) -{ - if (rdev->wb.wb_obj) { - radeon_object_kunmap(rdev->wb.wb_obj); - radeon_object_unpin(rdev->wb.wb_obj); - radeon_object_unref(&rdev->wb.wb_obj); - rdev->wb.wb = NULL; - rdev->wb.wb_obj = NULL; - } -} - - -/* - * CS - */ void r600_fence_ring_emit(struct radeon_device *rdev, struct radeon_fence *fence) { @@ -1500,9 +1500,8 @@ int r600_startup(struct radeon_device *rdev) r = r600_cp_resume(rdev); if (r) return r; - r = r600_wb_init(rdev); - if (r) - return r; + /* write back buffer are not vital so don't worry about failure */ + r600_wb_enable(rdev); return 0; } @@ -1539,13 +1538,12 @@ int r600_resume(struct radeon_device *rdev) return r; } - int r600_suspend(struct radeon_device *rdev) { /* FIXME: we should wait for ring to be empty */ r600_cp_stop(rdev); rdev->cp.ready = false; - + r600_wb_disable(rdev); r600_pcie_gart_disable(rdev); /* unpin shaders bo */ radeon_object_unpin(rdev->r600_blit.shader_obj); @@ -1668,6 +1666,7 @@ void r600_fini(struct radeon_device *rdev) r600_blit_fini(rdev); radeon_ring_fini(rdev); + r600_wb_fini(rdev); r600_pcie_gart_fini(rdev); radeon_gem_fini(rdev); radeon_fence_driver_fini(rdev); diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 902791d2275d..8d9dd03a9cda 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -1082,8 +1082,9 @@ extern int r600_pcie_gart_init(struct radeon_device *rdev); extern void r600_pcie_gart_tlb_flush(struct radeon_device *rdev); extern int r600_ib_test(struct radeon_device *rdev); extern int r600_ring_test(struct radeon_device *rdev); -extern int r600_wb_init(struct radeon_device *rdev); extern void r600_wb_fini(struct radeon_device *rdev); +extern int r600_wb_enable(struct radeon_device *rdev); +extern void r600_wb_disable(struct radeon_device *rdev); extern void r600_scratch_init(struct radeon_device *rdev); extern int r600_blit_init(struct radeon_device *rdev); extern void r600_blit_fini(struct radeon_device *rdev); diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c index 867d04bc4d39..af20a8d48dca 100644 --- a/drivers/gpu/drm/radeon/rv770.c +++ b/drivers/gpu/drm/radeon/rv770.c @@ -884,9 +884,8 @@ static int rv770_startup(struct radeon_device *rdev) r = r600_cp_resume(rdev); if (r) return r; - r = r600_wb_init(rdev); - if (r) - return r; + /* write back buffer are not vital so don't worry about failure */ + r600_wb_enable(rdev); return 0; } @@ -929,8 +928,8 @@ int rv770_suspend(struct radeon_device *rdev) /* FIXME: we should wait for ring to be empty */ r700_cp_stop(rdev); rdev->cp.ready = false; + r600_wb_disable(rdev); rv770_pcie_gart_disable(rdev); - /* unpin shaders bo */ radeon_object_unpin(rdev->r600_blit.shader_obj); return 0; @@ -1048,6 +1047,7 @@ void rv770_fini(struct radeon_device *rdev) r600_blit_fini(rdev); radeon_ring_fini(rdev); + r600_wb_fini(rdev); rv770_pcie_gart_fini(rdev); radeon_gem_fini(rdev); radeon_fence_driver_fini(rdev); 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