xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/radeon: rework the VM code a bit more (v2)

Browse Source 
Roughly based on how nouveau is handling it. Instead of
adding the bo_va when the address is set add the bo_va
when the handle is opened, but set the address to zero
until userspace tells us where to place it.

This fixes another bunch of problems with glamor.

v2: agd5f: fix build after dropping patch 7/8.

Signed-off-by: Christian König <deathsimple@vodafone.de>
This commit is contained in:
Christian König
2012-09-11 16:10:04 +02:00
committed by Alex Deucher
parent d59f70216b
commit e971bd5e45
4 changed files with 159 additions and 77 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
drivers/gpu/drm/radeon/radeon_gem.c
View File

@@ -124,6 +124,30 @@ void radeon_gem_fini(struct radeon_device *rdev)
*/
int radeon_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
{
struct radeon_bo *rbo = gem_to_radeon_bo(obj);
struct radeon_device *rdev = rbo->rdev;
struct radeon_fpriv *fpriv = file_priv->driver_priv;
struct radeon_vm *vm = &fpriv->vm;
struct radeon_bo_va *bo_va;
int r;
if (rdev->family < CHIP_CAYMAN) {
return 0;
}
r = radeon_bo_reserve(rbo, false);
if (r) {
return r;
}
bo_va = radeon_vm_bo_find(vm, rbo);
if (!bo_va) {
bo_va = radeon_vm_bo_add(rdev, vm, rbo);
} else {
++bo_va->ref_count;
}
radeon_bo_unreserve(rbo);
return 0;
}
@@ -134,6 +158,7 @@ void radeon_gem_object_close(struct drm_gem_object *obj,
struct radeon_device *rdev = rbo->rdev;
struct radeon_fpriv *fpriv = file_priv->driver_priv;
struct radeon_vm *vm = &fpriv->vm;
struct radeon_bo_va *bo_va;
int r;
if (rdev->family < CHIP_CAYMAN) {
@@ -146,7 +171,12 @@ void radeon_gem_object_close(struct drm_gem_object *obj,
"we fail to reserve bo (%d)\n", r);
return;
}
radeon_vm_bo_rmv(rdev, vm, rbo);
bo_va = radeon_vm_bo_find(vm, rbo);
if (bo_va) {
if (--bo_va->ref_count == 0) {
radeon_vm_bo_rmv(rdev, bo_va);
}
}
radeon_bo_unreserve(rbo);
}
@@ -462,19 +492,24 @@ int radeon_gem_va_ioctl(struct drm_device *dev, void *data,
drm_gem_object_unreference_unlocked(gobj);
return r;
}
bo_va = radeon_vm_bo_find(&fpriv->vm, rbo);
if (!bo_va) {
args->operation = RADEON_VA_RESULT_ERROR;
drm_gem_object_unreference_unlocked(gobj);
return -ENOENT;
}
switch (args->operation) {
case RADEON_VA_MAP:
bo_va = radeon_vm_bo_find(&fpriv->vm, rbo);
if (bo_va) {
if (bo_va->soffset) {
args->operation = RADEON_VA_RESULT_VA_EXIST;
args->offset = bo_va->soffset;
goto out;
}
r = radeon_vm_bo_add(rdev, &fpriv->vm, rbo,
args->offset, args->flags);
r = radeon_vm_bo_set_addr(rdev, bo_va, args->offset, args->flags);
break;
case RADEON_VA_UNMAP:
r = radeon_vm_bo_rmv(rdev, &fpriv->vm, rbo);
r = radeon_vm_bo_set_addr(rdev, bo_va, 0, 0);
break;
default:
break;