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authorAlex Deucher <alexdeucher@gmail.com>2010-08-27 13:59:54 -0400
committerDave Airlie <airlied@redhat.com>2010-08-30 09:51:57 +1000
commit87cbf8f2c5d1b1fc4642c3dc0bb6efc587479603 (patch)
tree87761225a3676badd631bd7175c4648b18a0260c /drivers/gpu
parent8807286e569c4f12fa2bc980187f3e2abc606d11 (diff)
downloadop-kernel-dev-87cbf8f2c5d1b1fc4642c3dc0bb6efc587479603.zip
op-kernel-dev-87cbf8f2c5d1b1fc4642c3dc0bb6efc587479603.tar.gz
drm/radeon/kms: fix a regression on r7xx AGP due to the HDP flush fix
commit: 812d046915f48236657f02c06d7dc47140e9ceda drm/radeon/kms/r7xx: add workaround for hw issue with HDP flush breaks on AGP boards since there is no VRAM gart table. This patch fixes the issue by creating a VRAM scratch page so that can be used on both AGP and PCIE. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=29834 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/r600.c2
-rw-r--r--drivers/gpu/drm/radeon/radeon.h6
-rw-r--r--drivers/gpu/drm/radeon/rv770.c52
3 files changed, 59 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index d0ebae9..aee8376 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3541,7 +3541,7 @@ void r600_ioctl_wait_idle(struct radeon_device *rdev, struct radeon_bo *bo)
* rather than write to HDP_REG_COHERENCY_FLUSH_CNTL
*/
if ((rdev->family >= CHIP_RV770) && (rdev->family <= CHIP_RV740)) {
- void __iomem *ptr = (void *)rdev->gart.table.vram.ptr;
+ void __iomem *ptr = (void *)rdev->vram_scratch.ptr;
u32 tmp;
WREG32(HDP_DEBUG1, 0);
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 3dfcfa3..e90d9e3 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1013,6 +1013,11 @@ int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp);
+/* VRAM scratch page for HDP bug */
+struct r700_vram_scratch {
+ struct radeon_bo *robj;
+ volatile uint32_t *ptr;
+};
/*
* Core structure, functions and helpers.
@@ -1079,6 +1084,7 @@ struct radeon_device {
const struct firmware *pfp_fw; /* r6/700 PFP firmware */
const struct firmware *rlc_fw; /* r6/700 RLC firmware */
struct r600_blit r600_blit;
+ struct r700_vram_scratch vram_scratch;
int msi_enabled; /* msi enabled */
struct r600_ih ih; /* r6/700 interrupt ring */
struct workqueue_struct *wq;
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index f1c79681..a84e386 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -905,6 +905,54 @@ static void rv770_gpu_init(struct radeon_device *rdev)
}
+static int rv770_vram_scratch_init(struct radeon_device *rdev)
+{
+ int r;
+ u64 gpu_addr;
+
+ if (rdev->vram_scratch.robj == NULL) {
+ r = radeon_bo_create(rdev, NULL, RADEON_GPU_PAGE_SIZE,
+ true, RADEON_GEM_DOMAIN_VRAM,
+ &rdev->vram_scratch.robj);
+ if (r) {
+ return r;
+ }
+ }
+
+ r = radeon_bo_reserve(rdev->vram_scratch.robj, false);
+ if (unlikely(r != 0))
+ return r;
+ r = radeon_bo_pin(rdev->vram_scratch.robj,
+ RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
+ if (r) {
+ radeon_bo_unreserve(rdev->vram_scratch.robj);
+ return r;
+ }
+ r = radeon_bo_kmap(rdev->vram_scratch.robj,
+ (void **)&rdev->vram_scratch.ptr);
+ if (r)
+ radeon_bo_unpin(rdev->vram_scratch.robj);
+ radeon_bo_unreserve(rdev->vram_scratch.robj);
+
+ return r;
+}
+
+static void rv770_vram_scratch_fini(struct radeon_device *rdev)
+{
+ int r;
+
+ if (rdev->vram_scratch.robj == NULL) {
+ return;
+ }
+ r = radeon_bo_reserve(rdev->vram_scratch.robj, false);
+ if (likely(r == 0)) {
+ radeon_bo_kunmap(rdev->vram_scratch.robj);
+ radeon_bo_unpin(rdev->vram_scratch.robj);
+ radeon_bo_unreserve(rdev->vram_scratch.robj);
+ }
+ radeon_bo_unref(&rdev->vram_scratch.robj);
+}
+
int rv770_mc_init(struct radeon_device *rdev)
{
u32 tmp;
@@ -970,6 +1018,9 @@ static int rv770_startup(struct radeon_device *rdev)
if (r)
return r;
}
+ r = rv770_vram_scratch_init(rdev);
+ if (r)
+ return r;
rv770_gpu_init(rdev);
r = r600_blit_init(rdev);
if (r) {
@@ -1195,6 +1246,7 @@ void rv770_fini(struct radeon_device *rdev)
r600_irq_fini(rdev);
radeon_irq_kms_fini(rdev);
rv770_pcie_gart_fini(rdev);
+ rv770_vram_scratch_fini(rdev);
radeon_gem_fini(rdev);
radeon_fence_driver_fini(rdev);
radeon_clocks_fini(rdev);
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