{
r600_cs_packet_next_reloc = &r600_cs_packet_next_reloc_nomm;
}
+
+/*
+ * DMA
+ */
+/**
+ * r600_dma_cs_next_reloc() - parse next reloc
+ * @p: parser structure holding parsing context.
+ * @cs_reloc: reloc informations
+ *
+ * Return the next reloc, do bo validation and compute
+ * GPU offset using the provided start.
+ **/
+int r600_dma_cs_next_reloc(struct radeon_cs_parser *p,
+ struct radeon_cs_reloc **cs_reloc)
+{
+ struct radeon_cs_chunk *relocs_chunk;
+ unsigned idx;
+
+ if (p->chunk_relocs_idx == -1) {
+ DRM_ERROR("No relocation chunk !\n");
+ return -EINVAL;
+ }
+ *cs_reloc = NULL;
+ relocs_chunk = &p->chunks[p->chunk_relocs_idx];
+ idx = p->dma_reloc_idx;
+ if (idx >= relocs_chunk->length_dw) {
+ DRM_ERROR("Relocs at %d after relocations chunk end %d !\n",
+ idx, relocs_chunk->length_dw);
+ return -EINVAL;
+ }
+ *cs_reloc = p->relocs_ptr[idx];
+ p->dma_reloc_idx++;
+ return 0;
+}
+
+#define GET_DMA_CMD(h) (((h) & 0xf0000000) >> 28)
+#define GET_DMA_COUNT(h) ((h) & 0x0000ffff)
+#define GET_DMA_T(h) (((h) & 0x00800000) >> 23)
+
+/**
+ * r600_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. (R6xx-R7xx)
+ * Returns 0 for success and an error on failure.
+ **/
+int r600_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;
+ u32 header, cmd, count, tiled;
+ volatile u32 *ib = p->ib.ptr;
+ u32 idx, idx_value;
+ u64 src_offset, dst_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);
+
+ 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 + 5;
+ } 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 + (count * 4), 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);
+ /* 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+5];
+ dst_offset |= ((u64)(ib[idx+6] & 0xff)) << 32;
+ ib[idx+5] += (u32)(dst_reloc->lobj.gpu_offset & 0xfffffffc);
+ ib[idx+6] += upper_32_bits(dst_reloc->lobj.gpu_offset) & 0xff;
+ } else {
+ /* linear src, tiled dst */
+ src_offset = ib[idx+5];
+ src_offset |= ((u64)(ib[idx+6] & 0xff)) << 32;
+ ib[idx+5] += (u32)(src_reloc->lobj.gpu_offset & 0xfffffffc);
+ ib[idx+6] += 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);
+ }
+ p->idx += 7;
+ } else {
+ 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;
+
+ 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;
+ }
+ if ((src_offset + (count * 4)) > radeon_bo_size(src_reloc->robj)) {
+ dev_warn(p->dev, "DMA copy 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 write dst buffer too small (%llu %lu)\n",
+ dst_offset + (count * 4), radeon_bo_size(dst_reloc->robj));
+ return -EINVAL;
+ }
+ break;
+ case DMA_PACKET_CONSTANT_FILL:
+ if (p->family < CHIP_RV770) {
+ DRM_ERROR("Constant Fill is 7xx only !\n");
+ return -EINVAL;
+ }
+ r = r600_dma_cs_next_reloc(p, &dst_reloc);
+ if (r) {
+ DRM_ERROR("bad DMA_PACKET_WRITE\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 + (count * 4), 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;
+}
projects / karo-tx-linux.git / blobdiff