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drm/radeon: add dma engine support for vm pt updates on ni (v5) 

Async DMA has a special packet for contiguous pt updates
which saves overhead.

v2: leave the CP method enabled for now as doing the updates
in the DMA rings is not working properly yet.

v3: update for 2 level pts

v4: rebase

v5: drop pte/pde packet.  doesn't seem to work on NI.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2012-10-22 12:19:01 -04:00
parent 2d6cc7296d
commit 3b6b59b610
1 changed files with 46 additions and 19 deletions
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39
drivers/gpu/drm/radeon/ni.c
View File

@ -1795,9 +1795,12 @@ void cayman_vm_set_page(struct radeon_device *rdev, uint64_t pe,
{
struct radeon_ring *ring = &rdev->ring[rdev->asic->vm.pt_ring_index];
uint32_t r600_flags = cayman_vm_page_flags(rdev, flags);
uint64_t value;
unsigned ndw;
if (rdev->asic->vm.pt_ring_index == RADEON_RING_TYPE_GFX_INDEX) {
while (count) {
unsigned ndw = 1 + count * 2;
ndw = 1 + count * 2;
if (ndw > 0x3FFF)
ndw = 0x3FFF;
@ -1805,22 +1808,46 @@ void cayman_vm_set_page(struct radeon_device *rdev, uint64_t pe,
radeon_ring_write(ring, pe);
radeon_ring_write(ring, upper_32_bits(pe) & 0xff);
for (; ndw > 1; ndw -= 2, --count, pe += 8) {
uint64_t value = 0;
if (flags & RADEON_VM_PAGE_SYSTEM) {
value = radeon_vm_map_gart(rdev, addr);
value &= 0xFFFFFFFFFFFFF000ULL;
addr += incr;
} else if (flags & RADEON_VM_PAGE_VALID) {
value = addr;
addr += incr;
} else {
value = 0;
}
addr += incr;
value |= r600_flags;
radeon_ring_write(ring, value);
radeon_ring_write(ring, upper_32_bits(value));
}
}
} else {
while (count) {
ndw = count * 2;
if (ndw > 0xFFFFE)
ndw = 0xFFFFE;
/* for non-physically contiguous pages (system) */
radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 0, ndw));
radeon_ring_write(ring, pe);
radeon_ring_write(ring, upper_32_bits(pe) & 0xff);
for (; ndw > 0; ndw -= 2, --count, pe += 8) {
if (flags & RADEON_VM_PAGE_SYSTEM) {
value = radeon_vm_map_gart(rdev, addr);
value &= 0xFFFFFFFFFFFFF000ULL;
} else if (flags & RADEON_VM_PAGE_VALID) {
value = addr;
} else {
value = 0;
}
addr += incr;
value |= r600_flags;
radeon_ring_write(ring, value);
radeon_ring_write(ring, upper_32_bits(value));
}
}
}
}
/**