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authorJerome Glisse <jglisse@redhat.com>2009-10-01 20:02:12 +0400
committerDave Airlie <airlied@redhat.com>2009-10-02 03:33:52 +0400
commit81cc35bfc19ebe4b823396fe4fef67a923360916 (patch)
treeda9cbddd170b1c93067f9c8e6411cbe02860f3e2 /drivers/gpu
parent62a8ea3f7bb61e5f92db0a648b7cc566852c36ec (diff)
downloadlinux-81cc35bfc19ebe4b823396fe4fef67a923360916.tar.xz
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 <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/r600.c67
-rw-r--r--drivers/gpu/drm/radeon/radeon.h3
-rw-r--r--drivers/gpu/drm/radeon/rv770.c8
3 files changed, 39 insertions, 39 deletions
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);