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drm/radeon: initially clear page tables

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Clear page tables after allocating them in case
we don't completely fill them later.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2013-10-29 20:14:50 +01:00
committed by Alex Deucher
parent 24c164393d
commit 5b2906ecf4
1 changed files with 10 additions and 0 deletions
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10
drivers/gpu/drm/radeon/radeon_gart.c
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@@ -995,6 +995,10 @@ retry:
radeon_asic_vm_set_page(rdev, ib, last_pde, radeon_asic_vm_set_page(rdev, ib, last_pde,
last_pt, count, incr, last_pt, count, incr,
R600_PTE_VALID); R600_PTE_VALID);
count *= RADEON_VM_PTE_COUNT;
radeon_asic_vm_set_page(rdev, ib, last_pt, 0,
count, 0, 0);
} }
count = 1; count = 1;
@@ -1009,6 +1013,9 @@ retry:
radeon_asic_vm_set_page(rdev, ib, last_pde, last_pt, count, radeon_asic_vm_set_page(rdev, ib, last_pde, last_pt, count,
incr, R600_PTE_VALID); incr, R600_PTE_VALID);
count *= RADEON_VM_PTE_COUNT;
radeon_asic_vm_set_page(rdev, ib, last_pt, 0,
count, 0, 0);
} }
return 0; return 0;
@@ -1170,6 +1177,9 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev,
/* reserve space for pde addresses */ /* reserve space for pde addresses */
ndw += npdes * 2; ndw += npdes * 2;
/* reserve space for clearing new page tables */
ndw += npdes * 2 * RADEON_VM_PTE_COUNT;
/* update too big for an IB */ /* update too big for an IB */
if (ndw > 0xfffff) if (ndw > 0xfffff)
return -ENOMEM; return -ENOMEM;