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drm/radeon: add support for CP DMA packet to r6xx/r7xx CS checker 

Currently only memory to memory transfers are allowed.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2012-12-03 19:03:23 -05:00
parent b997a8ba26
commit 6830f58572
1 changed files with 72 additions and 0 deletions
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72
drivers/gpu/drm/radeon/r600_cs.c
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@ -1949,6 +1949,78 @@ static int r600_packet3_check(struct radeon_cs_parser *p,
ib[idx+2] = upper_32_bits(offset) & 0xff;
}
break;
case PACKET3_CP_DMA:
{
u32 command, size;
u64 offset, tmp;
if (pkt->count != 4) {
DRM_ERROR("bad CP DMA\n");
return -EINVAL;
}
command = radeon_get_ib_value(p, idx+4);
size = command & 0x1fffff;
if (command & PACKET3_CP_DMA_CMD_SAS) {
/* src address space is register */
DRM_ERROR("CP DMA SAS not supported\n");
return -EINVAL;
} else {
if (command & PACKET3_CP_DMA_CMD_SAIC) {
DRM_ERROR("CP DMA SAIC only supported for registers\n");
return -EINVAL;
}
/* src address space is memory */
r = r600_cs_packet_next_reloc(p, &reloc);
if (r) {
DRM_ERROR("bad CP DMA SRC\n");
return -EINVAL;
}
tmp = radeon_get_ib_value(p, idx) +
((u64)(radeon_get_ib_value(p, idx+1) & 0xff) << 32);
offset = reloc->lobj.gpu_offset + tmp;
if ((tmp + size) > radeon_bo_size(reloc->robj)) {
dev_warn(p->dev, "CP DMA src buffer too small (%llu %lu)\n",
tmp + size, radeon_bo_size(reloc->robj));
return -EINVAL;
}
ib[idx] = offset;
ib[idx+1] = (ib[idx+1] & 0xffffff00) | (upper_32_bits(offset) & 0xff);
}
if (command & PACKET3_CP_DMA_CMD_DAS) {
/* dst address space is register */
DRM_ERROR("CP DMA DAS not supported\n");
return -EINVAL;
} else {
/* dst address space is memory */
if (command & PACKET3_CP_DMA_CMD_DAIC) {
DRM_ERROR("CP DMA DAIC only supported for registers\n");
return -EINVAL;
}
r = r600_cs_packet_next_reloc(p, &reloc);
if (r) {
DRM_ERROR("bad CP DMA DST\n");
return -EINVAL;
}
tmp = radeon_get_ib_value(p, idx+2) +
((u64)(radeon_get_ib_value(p, idx+3) & 0xff) << 32);
offset = reloc->lobj.gpu_offset + tmp;
if ((tmp + size) > radeon_bo_size(reloc->robj)) {
dev_warn(p->dev, "CP DMA dst buffer too small (%llu %lu)\n",
tmp + size, radeon_bo_size(reloc->robj));
return -EINVAL;
}
ib[idx+2] = offset;
ib[idx+3] = upper_32_bits(offset) & 0xff;
}
break;
}
case PACKET3_SURFACE_SYNC:
if (pkt->count != 3) {
DRM_ERROR("bad SURFACE_SYNC\n");