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authorChristian König <deathsimple@vodafone.de>2012-07-05 14:32:00 +0200
committerChristian König <deathsimple@vodafone.de>2012-07-17 10:32:55 +0200
commitc6105f249a637e1bb2b04b1cad7feaf507d06e8c (patch)
tree6dfaa699908277f651d60bbea6089bf25ac228ae /drivers/gpu/drm/radeon/radeon_gart.c
parent6f72a631998d37673828b0e97c63dafc8e923382 (diff)
downloadblackbird-op-linux-c6105f249a637e1bb2b04b1cad7feaf507d06e8c.tar.gz
blackbird-op-linux-c6105f249a637e1bb2b04b1cad7feaf507d06e8c.zip
drm/radeon: remove vm_manager start/suspend
Just restore the page table instead. Addressing three problem with this change: 1. Calling vm_manager_suspend in the suspend path is problematic cause it wants to wait for the VM use to end, which in case of a lockup never happens. 2. In case of a locked up memory controller unbinding the VM seems to make it even more unstable, creating an unrecoverable lockup in the end. 3. If we want to backup/restore the leftover ring content we must not unbind VMs in between. Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_gart.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_gart.c83
1 files changed, 51 insertions, 32 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index ee11c5073726..56752da4b816 100644
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -282,27 +282,58 @@ void radeon_gart_fini(struct radeon_device *rdev)
*
* TODO bind a default page at vm initialization for default address
*/
+
int radeon_vm_manager_init(struct radeon_device *rdev)
{
+ struct radeon_vm *vm;
+ struct radeon_bo_va *bo_va;
int r;
- rdev->vm_manager.enabled = false;
+ if (!rdev->vm_manager.enabled) {
+ /* mark first vm as always in use, it's the system one */
+ r = radeon_sa_bo_manager_init(rdev, &rdev->vm_manager.sa_manager,
+ rdev->vm_manager.max_pfn * 8,
+ RADEON_GEM_DOMAIN_VRAM);
+ if (r) {
+ dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n",
+ (rdev->vm_manager.max_pfn * 8) >> 10);
+ return r;
+ }
- /* mark first vm as always in use, it's the system one */
- r = radeon_sa_bo_manager_init(rdev, &rdev->vm_manager.sa_manager,
- rdev->vm_manager.max_pfn * 8,
- RADEON_GEM_DOMAIN_VRAM);
- if (r) {
- dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n",
- (rdev->vm_manager.max_pfn * 8) >> 10);
- return r;
+ r = rdev->vm_manager.funcs->init(rdev);
+ if (r)
+ return r;
+
+ rdev->vm_manager.enabled = true;
+
+ r = radeon_sa_bo_manager_start(rdev, &rdev->vm_manager.sa_manager);
+ if (r)
+ return r;
}
- r = rdev->vm_manager.funcs->init(rdev);
- if (r == 0)
- rdev->vm_manager.enabled = true;
+ /* restore page table */
+ list_for_each_entry(vm, &rdev->vm_manager.lru_vm, list) {
+ if (vm->id == -1)
+ continue;
- return r;
+ list_for_each_entry(bo_va, &vm->va, vm_list) {
+ struct ttm_mem_reg *mem = NULL;
+ if (bo_va->valid)
+ mem = &bo_va->bo->tbo.mem;
+
+ bo_va->valid = false;
+ r = radeon_vm_bo_update_pte(rdev, vm, bo_va->bo, mem);
+ if (r) {
+ DRM_ERROR("Failed to update pte for vm %d!\n", vm->id);
+ }
+ }
+
+ r = rdev->vm_manager.funcs->bind(rdev, vm, vm->id);
+ if (r) {
+ DRM_ERROR("Failed to bind vm %d!\n", vm->id);
+ }
+ }
+ return 0;
}
/* global mutex must be lock */
@@ -347,26 +378,11 @@ static void radeon_vm_unbind_locked(struct radeon_device *rdev,
void radeon_vm_manager_fini(struct radeon_device *rdev)
{
- if (rdev->vm_manager.sa_manager.bo == NULL)
- return;
- radeon_vm_manager_suspend(rdev);
- rdev->vm_manager.funcs->fini(rdev);
- radeon_sa_bo_manager_fini(rdev, &rdev->vm_manager.sa_manager);
- rdev->vm_manager.enabled = false;
-}
-
-int radeon_vm_manager_start(struct radeon_device *rdev)
-{
- if (rdev->vm_manager.sa_manager.bo == NULL) {
- return -EINVAL;
- }
- return radeon_sa_bo_manager_start(rdev, &rdev->vm_manager.sa_manager);
-}
-
-int radeon_vm_manager_suspend(struct radeon_device *rdev)
-{
struct radeon_vm *vm, *tmp;
+ if (!rdev->vm_manager.enabled)
+ return;
+
mutex_lock(&rdev->vm_manager.lock);
/* unbind all active vm */
list_for_each_entry_safe(vm, tmp, &rdev->vm_manager.lru_vm, list) {
@@ -374,7 +390,10 @@ int radeon_vm_manager_suspend(struct radeon_device *rdev)
}
rdev->vm_manager.funcs->fini(rdev);
mutex_unlock(&rdev->vm_manager.lock);
- return radeon_sa_bo_manager_suspend(rdev, &rdev->vm_manager.sa_manager);
+
+ radeon_sa_bo_manager_suspend(rdev, &rdev->vm_manager.sa_manager);
+ radeon_sa_bo_manager_fini(rdev, &rdev->vm_manager.sa_manager);
+ rdev->vm_manager.enabled = false;
}
/* global mutex must be locked */
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