diff options
author | Alex Deucher <alexander.deucher@amd.com> | 2012-10-22 12:32:54 -0400 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2012-12-10 17:21:42 -0500 |
commit | deab48f140d28d788cb2b5705761a92b02e3440d (patch) | |
tree | 36b351ec99fb926d38d8e8c7a3a881513ff8c7d2 /drivers/gpu/drm | |
parent | 33e5467871b3007c4e6deea95b2cac38a55ff9f5 (diff) | |
download | linux-deab48f140d28d788cb2b5705761a92b02e3440d.tar.bz2 |
drm/radeon: add dma engine support for vm pt updates on si (v2)
Async DMA has a special packet for contiguous pt updates
which saves overhead.
v2: rebase
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r-- | drivers/gpu/drm/radeon/si.c | 104 | ||||
-rw-r--r-- | drivers/gpu/drm/radeon/sid.h | 10 |
2 files changed, 90 insertions, 24 deletions
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 93f7171e6bcd..f6e7815e1860 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -2825,30 +2825,86 @@ void si_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); - - while (count) { - unsigned ndw = 2 + count * 2; - if (ndw > 0x3FFE) - ndw = 0x3FFE; - - radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, ndw)); - radeon_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) | - WRITE_DATA_DST_SEL(1))); - radeon_ring_write(ring, pe); - radeon_ring_write(ring, upper_32_bits(pe)); - for (; ndw > 2; ndw -= 2, --count, pe += 8) { - uint64_t value; - 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)); + uint64_t value; + unsigned ndw; + + if (rdev->asic->vm.pt_ring_index == RADEON_RING_TYPE_GFX_INDEX) { + while (count) { + ndw = 2 + count * 2; + if (ndw > 0x3FFE) + ndw = 0x3FFE; + + radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, ndw)); + radeon_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) | + WRITE_DATA_DST_SEL(1))); + radeon_ring_write(ring, pe); + radeon_ring_write(ring, upper_32_bits(pe)); + for (; ndw > 2; 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)); + } + } + } else { + /* DMA */ + if (flags & RADEON_VM_PAGE_SYSTEM) { + 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, 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)); + } + } + } else { + while (count) { + ndw = count * 2; + if (ndw > 0xFFFFE) + ndw = 0xFFFFE; + + if (flags & RADEON_VM_PAGE_VALID) + value = addr; + else + value = 0; + /* for physically contiguous pages (vram) */ + radeon_ring_write(ring, DMA_PTE_PDE_PACKET(ndw)); + radeon_ring_write(ring, pe); /* dst addr */ + radeon_ring_write(ring, upper_32_bits(pe) & 0xff); + radeon_ring_write(ring, r600_flags); /* mask */ + radeon_ring_write(ring, 0); + radeon_ring_write(ring, value); /* value */ + radeon_ring_write(ring, upper_32_bits(value)); + radeon_ring_write(ring, incr); /* increment size */ + radeon_ring_write(ring, 0); + pe += ndw * 4; + addr += (ndw / 2) * incr; + count -= ndw / 2; + } } } } diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h index 0acd32759c7c..e153c254fbfb 100644 --- a/drivers/gpu/drm/radeon/sid.h +++ b/drivers/gpu/drm/radeon/sid.h @@ -972,6 +972,16 @@ (((t) & 0x1) << 23) | \ (((s) & 0x1) << 22) | \ (((n) & 0xFFFFF) << 0)) + +#define DMA_IB_PACKET(cmd, vmid, n) ((((cmd) & 0xF) << 28) | \ + (((vmid) & 0xF) << 20) | \ + (((n) & 0xFFFFF) << 0)) + +#define DMA_PTE_PDE_PACKET(n) ((2 << 28) | \ + (1 << 26) | \ + (1 << 21) | \ + (((n) & 0xFFFFF) << 0)) + /* async DMA Packet types */ #define DMA_PACKET_WRITE 0x2 #define DMA_PACKET_COPY 0x3 |