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author | Alex Deucher <alexander.deucher@amd.com> | 2012-12-13 09:55:45 -0500 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2012-12-14 10:45:25 -0500 |
commit | d2ead3eaf8a4bf92129eda69189ce18a6c1cc8bd (patch) | |
tree | 61502ccac6c09b16184b617bfdcb309d19114ccf /drivers/gpu/drm/radeon/evergreen_cs.c | |
parent | cf4ccd016bae1a03bb38170eb54b5db4b04e0545 (diff) | |
download | linux-d2ead3eaf8a4bf92129eda69189ce18a6c1cc8bd.tar.bz2 |
drm/radeon/kms: add evergreen/cayman CS parser for async DMA (v2)
Allows us to use the DMA ring from userspace.
DMA doesn't have a good NOP packet in which to embed the
reloc idx, so userspace has to add a reloc for each
buffer used and order them to match the command stream.
v2: fix address bounds checking
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/evergreen_cs.c')
-rw-r--r-- | drivers/gpu/drm/radeon/evergreen_cs.c | 451 |
1 files changed, 451 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c b/drivers/gpu/drm/radeon/evergreen_cs.c index fc7e613124da..0a1ec4e6f15e 100644 --- a/drivers/gpu/drm/radeon/evergreen_cs.c +++ b/drivers/gpu/drm/radeon/evergreen_cs.c @@ -34,6 +34,8 @@ #define MAX(a,b) (((a)>(b))?(a):(b)) #define MIN(a,b) (((a)<(b))?(a):(b)) +int r600_dma_cs_next_reloc(struct radeon_cs_parser *p, + struct radeon_cs_reloc **cs_reloc); static int evergreen_cs_packet_next_reloc(struct radeon_cs_parser *p, struct radeon_cs_reloc **cs_reloc); @@ -2815,6 +2817,455 @@ int evergreen_cs_parse(struct radeon_cs_parser *p) return 0; } +/* + * DMA + */ + +#define GET_DMA_CMD(h) (((h) & 0xf0000000) >> 28) +#define GET_DMA_COUNT(h) ((h) & 0x000fffff) +#define GET_DMA_T(h) (((h) & 0x00800000) >> 23) +#define GET_DMA_NEW(h) (((h) & 0x04000000) >> 26) +#define GET_DMA_MISC(h) (((h) & 0x0700000) >> 20) + +/** + * evergreen_dma_cs_parse() - parse the DMA IB + * @p: parser structure holding parsing context. + * + * Parses the DMA IB from the CS ioctl and updates + * the GPU addresses based on the reloc information and + * checks for errors. (Evergreen-Cayman) + * Returns 0 for success and an error on failure. + **/ +int evergreen_dma_cs_parse(struct radeon_cs_parser *p) +{ + struct radeon_cs_chunk *ib_chunk = &p->chunks[p->chunk_ib_idx]; + struct radeon_cs_reloc *src_reloc, *dst_reloc, *dst2_reloc; + u32 header, cmd, count, tiled, new_cmd, misc; + volatile u32 *ib = p->ib.ptr; + u32 idx, idx_value; + u64 src_offset, dst_offset, dst2_offset; + int r; + + do { + if (p->idx >= ib_chunk->length_dw) { + DRM_ERROR("Can not parse packet at %d after CS end %d !\n", + p->idx, ib_chunk->length_dw); + return -EINVAL; + } + idx = p->idx; + header = radeon_get_ib_value(p, idx); + cmd = GET_DMA_CMD(header); + count = GET_DMA_COUNT(header); + tiled = GET_DMA_T(header); + new_cmd = GET_DMA_NEW(header); + misc = GET_DMA_MISC(header); + + switch (cmd) { + case DMA_PACKET_WRITE: + r = r600_dma_cs_next_reloc(p, &dst_reloc); + if (r) { + DRM_ERROR("bad DMA_PACKET_WRITE\n"); + return -EINVAL; + } + if (tiled) { + dst_offset = ib[idx+1]; + dst_offset <<= 8; + + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset >> 8); + p->idx += count + 7; + } else { + dst_offset = ib[idx+1]; + dst_offset |= ((u64)(ib[idx+2] & 0xff)) << 32; + + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+2] += upper_32_bits(dst_reloc->lobj.gpu_offset) & 0xff; + p->idx += count + 3; + } + if ((dst_offset + (count * 4)) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA write buffer too small (%llu %lu)\n", + dst_offset, radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + break; + case DMA_PACKET_COPY: + r = r600_dma_cs_next_reloc(p, &src_reloc); + if (r) { + DRM_ERROR("bad DMA_PACKET_COPY\n"); + return -EINVAL; + } + r = r600_dma_cs_next_reloc(p, &dst_reloc); + if (r) { + DRM_ERROR("bad DMA_PACKET_COPY\n"); + return -EINVAL; + } + if (tiled) { + idx_value = radeon_get_ib_value(p, idx + 2); + if (new_cmd) { + switch (misc) { + case 0: + /* L2T, frame to fields */ + if (idx_value & (1 << 31)) { + DRM_ERROR("bad L2T, frame to fields DMA_PACKET_COPY\n"); + return -EINVAL; + } + r = r600_dma_cs_next_reloc(p, &dst2_reloc); + if (r) { + DRM_ERROR("bad L2T, frame to fields DMA_PACKET_COPY\n"); + return -EINVAL; + } + dst_offset = ib[idx+1]; + dst_offset <<= 8; + dst2_offset = ib[idx+2]; + dst2_offset <<= 8; + src_offset = ib[idx+8]; + src_offset |= ((u64)(ib[idx+9] & 0xff)) << 32; + if ((src_offset + (count * 4)) > radeon_bo_size(src_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, frame to fields src buffer too small (%llu %lu)\n", + src_offset + (count * 4), radeon_bo_size(src_reloc->robj)); + return -EINVAL; + } + if ((dst_offset + (count * 4)) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, frame to fields buffer too small (%llu %lu)\n", + dst_offset + (count * 4), radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + if ((dst2_offset + (count * 4)) > radeon_bo_size(dst2_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, frame to fields buffer too small (%llu %lu)\n", + dst2_offset + (count * 4), radeon_bo_size(dst2_reloc->robj)); + return -EINVAL; + } + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset >> 8); + ib[idx+2] += (u32)(dst2_reloc->lobj.gpu_offset >> 8); + ib[idx+8] += (u32)(src_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+9] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + p->idx += 10; + break; + case 1: + /* L2T, T2L partial */ + if (p->family < CHIP_CAYMAN) { + DRM_ERROR("L2T, T2L Partial is cayman only !\n"); + return -EINVAL; + } + /* detile bit */ + if (idx_value & (1 << 31)) { + /* tiled src, linear dst */ + ib[idx+1] += (u32)(src_reloc->lobj.gpu_offset >> 8); + + ib[idx+7] += (u32)(dst_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+8] += upper_32_bits(dst_reloc->lobj.gpu_offset) & 0xff; + } else { + /* linear src, tiled dst */ + ib[idx+7] += (u32)(src_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+8] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset >> 8); + } + p->idx += 12; + break; + case 3: + /* L2T, broadcast */ + if (idx_value & (1 << 31)) { + DRM_ERROR("bad L2T, broadcast DMA_PACKET_COPY\n"); + return -EINVAL; + } + r = r600_dma_cs_next_reloc(p, &dst2_reloc); + if (r) { + DRM_ERROR("bad L2T, broadcast DMA_PACKET_COPY\n"); + return -EINVAL; + } + dst_offset = ib[idx+1]; + dst_offset <<= 8; + dst2_offset = ib[idx+2]; + dst2_offset <<= 8; + src_offset = ib[idx+8]; + src_offset |= ((u64)(ib[idx+9] & 0xff)) << 32; + if ((src_offset + (count * 4)) > radeon_bo_size(src_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, broadcast src buffer too small (%llu %lu)\n", + src_offset + (count * 4), radeon_bo_size(src_reloc->robj)); + return -EINVAL; + } + if ((dst_offset + (count * 4)) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, broadcast dst buffer too small (%llu %lu)\n", + dst_offset + (count * 4), radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + if ((dst2_offset + (count * 4)) > radeon_bo_size(dst2_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, broadcast dst2 buffer too small (%llu %lu)\n", + dst2_offset + (count * 4), radeon_bo_size(dst2_reloc->robj)); + return -EINVAL; + } + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset >> 8); + ib[idx+2] += (u32)(dst2_reloc->lobj.gpu_offset >> 8); + ib[idx+8] += (u32)(src_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+9] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + p->idx += 10; + break; + case 4: + /* L2T, T2L */ + /* detile bit */ + if (idx_value & (1 << 31)) { + /* tiled src, linear dst */ + src_offset = ib[idx+1]; + src_offset <<= 8; + ib[idx+1] += (u32)(src_reloc->lobj.gpu_offset >> 8); + + dst_offset = ib[idx+7]; + dst_offset |= ((u64)(ib[idx+8] & 0xff)) << 32; + ib[idx+7] += (u32)(dst_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+8] += upper_32_bits(dst_reloc->lobj.gpu_offset) & 0xff; + } else { + /* linear src, tiled dst */ + src_offset = ib[idx+7]; + src_offset |= ((u64)(ib[idx+8] & 0xff)) << 32; + ib[idx+7] += (u32)(src_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+8] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + + dst_offset = ib[idx+1]; + dst_offset <<= 8; + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset >> 8); + } + if ((src_offset + (count * 4)) > radeon_bo_size(src_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, T2L src buffer too small (%llu %lu)\n", + src_offset + (count * 4), radeon_bo_size(src_reloc->robj)); + return -EINVAL; + } + if ((dst_offset + (count * 4)) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, T2L dst buffer too small (%llu %lu)\n", + dst_offset + (count * 4), radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + p->idx += 9; + break; + case 5: + /* T2T partial */ + if (p->family < CHIP_CAYMAN) { + DRM_ERROR("L2T, T2L Partial is cayman only !\n"); + return -EINVAL; + } + ib[idx+1] += (u32)(src_reloc->lobj.gpu_offset >> 8); + ib[idx+4] += (u32)(dst_reloc->lobj.gpu_offset >> 8); + p->idx += 13; + break; + case 7: + /* L2T, broadcast */ + if (idx_value & (1 << 31)) { + DRM_ERROR("bad L2T, broadcast DMA_PACKET_COPY\n"); + return -EINVAL; + } + r = r600_dma_cs_next_reloc(p, &dst2_reloc); + if (r) { + DRM_ERROR("bad L2T, broadcast DMA_PACKET_COPY\n"); + return -EINVAL; + } + dst_offset = ib[idx+1]; + dst_offset <<= 8; + dst2_offset = ib[idx+2]; + dst2_offset <<= 8; + src_offset = ib[idx+8]; + src_offset |= ((u64)(ib[idx+9] & 0xff)) << 32; + if ((src_offset + (count * 4)) > radeon_bo_size(src_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, broadcast src buffer too small (%llu %lu)\n", + src_offset + (count * 4), radeon_bo_size(src_reloc->robj)); + return -EINVAL; + } + if ((dst_offset + (count * 4)) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, broadcast dst buffer too small (%llu %lu)\n", + dst_offset + (count * 4), radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + if ((dst2_offset + (count * 4)) > radeon_bo_size(dst2_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, broadcast dst2 buffer too small (%llu %lu)\n", + dst2_offset + (count * 4), radeon_bo_size(dst2_reloc->robj)); + return -EINVAL; + } + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset >> 8); + ib[idx+2] += (u32)(dst2_reloc->lobj.gpu_offset >> 8); + ib[idx+8] += (u32)(src_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+9] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + p->idx += 10; + break; + default: + DRM_ERROR("bad DMA_PACKET_COPY misc %u\n", misc); + return -EINVAL; + } + } else { + switch (misc) { + case 0: + /* detile bit */ + if (idx_value & (1 << 31)) { + /* tiled src, linear dst */ + src_offset = ib[idx+1]; + src_offset <<= 8; + ib[idx+1] += (u32)(src_reloc->lobj.gpu_offset >> 8); + + dst_offset = ib[idx+7]; + dst_offset |= ((u64)(ib[idx+8] & 0xff)) << 32; + ib[idx+7] += (u32)(dst_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+8] += upper_32_bits(dst_reloc->lobj.gpu_offset) & 0xff; + } else { + /* linear src, tiled dst */ + src_offset = ib[idx+7]; + src_offset |= ((u64)(ib[idx+8] & 0xff)) << 32; + ib[idx+7] += (u32)(src_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+8] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + + dst_offset = ib[idx+1]; + dst_offset <<= 8; + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset >> 8); + } + if ((src_offset + (count * 4)) > radeon_bo_size(src_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, broadcast src buffer too small (%llu %lu)\n", + src_offset + (count * 4), radeon_bo_size(src_reloc->robj)); + return -EINVAL; + } + if ((dst_offset + (count * 4)) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA L2T, broadcast dst buffer too small (%llu %lu)\n", + dst_offset + (count * 4), radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + p->idx += 9; + break; + default: + DRM_ERROR("bad DMA_PACKET_COPY misc %u\n", misc); + return -EINVAL; + } + } + } else { + if (new_cmd) { + switch (misc) { + case 0: + /* L2L, byte */ + src_offset = ib[idx+2]; + src_offset |= ((u64)(ib[idx+4] & 0xff)) << 32; + dst_offset = ib[idx+1]; + dst_offset |= ((u64)(ib[idx+3] & 0xff)) << 32; + if ((src_offset + count) > radeon_bo_size(src_reloc->robj)) { + dev_warn(p->dev, "DMA L2L, byte src buffer too small (%llu %lu)\n", + src_offset + count, radeon_bo_size(src_reloc->robj)); + return -EINVAL; + } + if ((dst_offset + count) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA L2L, byte dst buffer too small (%llu %lu)\n", + dst_offset + count, radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset & 0xffffffff); + ib[idx+2] += (u32)(src_reloc->lobj.gpu_offset & 0xffffffff); + ib[idx+3] += upper_32_bits(dst_reloc->lobj.gpu_offset) & 0xff; + ib[idx+4] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + p->idx += 5; + break; + case 1: + /* L2L, partial */ + if (p->family < CHIP_CAYMAN) { + DRM_ERROR("L2L Partial is cayman only !\n"); + return -EINVAL; + } + ib[idx+1] += (u32)(src_reloc->lobj.gpu_offset & 0xffffffff); + ib[idx+2] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + ib[idx+4] += (u32)(dst_reloc->lobj.gpu_offset & 0xffffffff); + ib[idx+5] += upper_32_bits(dst_reloc->lobj.gpu_offset) & 0xff; + + p->idx += 9; + break; + case 4: + /* L2L, dw, broadcast */ + r = r600_dma_cs_next_reloc(p, &dst2_reloc); + if (r) { + DRM_ERROR("bad L2L, dw, broadcast DMA_PACKET_COPY\n"); + return -EINVAL; + } + dst_offset = ib[idx+1]; + dst_offset |= ((u64)(ib[idx+4] & 0xff)) << 32; + dst2_offset = ib[idx+2]; + dst2_offset |= ((u64)(ib[idx+5] & 0xff)) << 32; + src_offset = ib[idx+3]; + src_offset |= ((u64)(ib[idx+6] & 0xff)) << 32; + if ((src_offset + (count * 4)) > radeon_bo_size(src_reloc->robj)) { + dev_warn(p->dev, "DMA L2L, dw, broadcast src buffer too small (%llu %lu)\n", + src_offset + (count * 4), radeon_bo_size(src_reloc->robj)); + return -EINVAL; + } + if ((dst_offset + (count * 4)) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA L2L, dw, broadcast dst buffer too small (%llu %lu)\n", + dst_offset + (count * 4), radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + if ((dst2_offset + (count * 4)) > radeon_bo_size(dst2_reloc->robj)) { + dev_warn(p->dev, "DMA L2L, dw, broadcast dst2 buffer too small (%llu %lu)\n", + dst2_offset + (count * 4), radeon_bo_size(dst2_reloc->robj)); + return -EINVAL; + } + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+2] += (u32)(dst2_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+3] += (u32)(src_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+4] += upper_32_bits(dst_reloc->lobj.gpu_offset) & 0xff; + ib[idx+5] += upper_32_bits(dst2_reloc->lobj.gpu_offset) & 0xff; + ib[idx+6] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + p->idx += 7; + break; + default: + DRM_ERROR("bad DMA_PACKET_COPY misc %u\n", misc); + return -EINVAL; + } + } else { + /* L2L, dw */ + src_offset = ib[idx+2]; + src_offset |= ((u64)(ib[idx+4] & 0xff)) << 32; + dst_offset = ib[idx+1]; + dst_offset |= ((u64)(ib[idx+3] & 0xff)) << 32; + if ((src_offset + (count * 4)) > radeon_bo_size(src_reloc->robj)) { + dev_warn(p->dev, "DMA L2L, dw src buffer too small (%llu %lu)\n", + src_offset + (count * 4), radeon_bo_size(src_reloc->robj)); + return -EINVAL; + } + if ((dst_offset + (count * 4)) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA L2L, dw dst buffer too small (%llu %lu)\n", + dst_offset + (count * 4), radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+2] += (u32)(src_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+3] += upper_32_bits(dst_reloc->lobj.gpu_offset) & 0xff; + ib[idx+4] += upper_32_bits(src_reloc->lobj.gpu_offset) & 0xff; + p->idx += 5; + } + } + break; + case DMA_PACKET_CONSTANT_FILL: + r = r600_dma_cs_next_reloc(p, &dst_reloc); + if (r) { + DRM_ERROR("bad DMA_PACKET_CONSTANT_FILL\n"); + return -EINVAL; + } + dst_offset = ib[idx+1]; + dst_offset |= ((u64)(ib[idx+3] & 0x00ff0000)) << 16; + if ((dst_offset + (count * 4)) > radeon_bo_size(dst_reloc->robj)) { + dev_warn(p->dev, "DMA constant fill buffer too small (%llu %lu)\n", + dst_offset, radeon_bo_size(dst_reloc->robj)); + return -EINVAL; + } + ib[idx+1] += (u32)(dst_reloc->lobj.gpu_offset & 0xfffffffc); + ib[idx+3] += (upper_32_bits(dst_reloc->lobj.gpu_offset) << 16) & 0x00ff0000; + p->idx += 4; + break; + case DMA_PACKET_NOP: + p->idx += 1; + break; + default: + DRM_ERROR("Unknown packet type %d at %d !\n", cmd, idx); + return -EINVAL; + } + } while (p->idx < p->chunks[p->chunk_ib_idx].length_dw); +#if 0 + for (r = 0; r < p->ib->length_dw; r++) { + printk(KERN_INFO "%05d 0x%08X\n", r, p->ib.ptr[r]); + mdelay(1); + } +#endif + return 0; +} + /* vm parser */ static bool evergreen_vm_reg_valid(u32 reg) { |