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drm/radeon: optimize SI VM handling

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Fill VM page tables from the GART page table if applicable.

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 2014-05-27 16:47:38 +02:00 committed by Alex Deucher
parent 0e97703c5c
commit f3982ac141
1 changed files with 19 additions and 1 deletions
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20
drivers/gpu/drm/radeon/si_dma.c
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@ -79,7 +79,25 @@ void si_dma_vm_set_page(struct radeon_device *rdev,
trace_radeon_vm_set_page(pe, addr, count, incr, flags);
if (flags & R600_PTE_SYSTEM) {
if (flags == R600_PTE_GART) {
uint64_t src = rdev->gart.table_addr + (addr >> 12) * 8;
while (count) {
unsigned bytes = count * 8;
if (bytes > 0xFFFF8)
bytes = 0xFFFF8;
ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY,
1, 0, 0, bytes);
ib->ptr[ib->length_dw++] = pe & 0xffffffff;
ib->ptr[ib->length_dw++] = src & 0xffffffff;
ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
ib->ptr[ib->length_dw++] = upper_32_bits(src) & 0xff;
pe += bytes;
src += bytes;
count -= bytes / 8;
}
} else if (flags & R600_PTE_SYSTEM) {
while (count) {
ndw = count * 2;
if (ndw > 0xFFFFE)