/* * Copyright 2008 Jerome Glisse. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Authors: * Jerome Glisse <glisse@freedesktop.org> */ #include "drmP.h" #include "radeon_drm.h" #include "radeon_reg.h" #include "radeon.h" void r100_cs_dump_packet(struct radeon_cs_parser *p, struct radeon_cs_packet *pkt); int radeon_cs_parser_relocs(struct radeon_cs_parser *p) { struct drm_device *ddev = p->rdev->ddev; struct radeon_cs_chunk *chunk; unsigned i, j; bool duplicate; if (p->chunk_relocs_idx == -1) { return 0; } chunk = &p->chunks[p->chunk_relocs_idx]; /* FIXME: we assume that each relocs use 4 dwords */ p->nrelocs = chunk->length_dw / 4; p->relocs_ptr = kcalloc(p->nrelocs, sizeof(void *), GFP_KERNEL); if (p->relocs_ptr == NULL) { return -ENOMEM; } p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL); if (p->relocs == NULL) { return -ENOMEM; } for (i = 0; i < p->nrelocs; i++) { struct drm_radeon_cs_reloc *r; duplicate = false; r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4]; for (j = 0; j < p->nrelocs; j++) { if (r->handle == p->relocs[j].handle) { p->relocs_ptr[i] = &p->relocs[j]; duplicate = true; break; } } if (!duplicate) { p->relocs[i].gobj = drm_gem_object_lookup(ddev, p->filp, r->handle); if (p->relocs[i].gobj == NULL) { DRM_ERROR("gem object lookup failed 0x%x\n", r->handle); return -ENOENT; } p->relocs_ptr[i] = &p->relocs[i]; p->relocs[i].robj = p->relocs[i].gobj->driver_private; p->relocs[i].lobj.bo = p->relocs[i].robj; p->relocs[i].lobj.rdomain = r->read_domains; p->relocs[i].lobj.wdomain = r->write_domain; p->relocs[i].handle = r->handle; p->relocs[i].flags = r->flags; INIT_LIST_HEAD(&p->relocs[i].lobj.list); radeon_bo_list_add_object(&p->relocs[i].lobj, &p->validated); } } return radeon_bo_list_validate(&p->validated); } int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data) { struct drm_radeon_cs *cs = data; uint64_t *chunk_array_ptr; unsigned size, i; if (!cs->num_chunks) { return 0; } /* get chunks */ INIT_LIST_HEAD(&p->validated); p->idx = 0; p->chunk_ib_idx = -1; p->chunk_relocs_idx = -1; p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL); if (p->chunks_array == NULL) { return -ENOMEM; } chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks); if (DRM_COPY_FROM_USER(p->chunks_array, chunk_array_ptr, sizeof(uint64_t)*cs->num_chunks)) { return -EFAULT; } p->nchunks = cs->num_chunks; p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL); if (p->chunks == NULL) { return -ENOMEM; } for (i = 0; i < p->nchunks; i++) { struct drm_radeon_cs_chunk __user **chunk_ptr = NULL; struct drm_radeon_cs_chunk user_chunk; uint32_t __user *cdata; chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i]; if (DRM_COPY_FROM_USER(&user_chunk, chunk_ptr, sizeof(struct drm_radeon_cs_chunk))) { return -EFAULT; } p->chunks[i].length_dw = user_chunk.length_dw; p->chunks[i].kdata = NULL; p->chunks[i].chunk_id = user_chunk.chunk_id; if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) { p->chunk_relocs_idx = i; } if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_IB) { p->chunk_ib_idx = i; /* zero length IB isn't useful */ if (p->chunks[i].length_dw == 0) return -EINVAL; } p->chunks[i].length_dw = user_chunk.length_dw; p->chunks[i].user_ptr = (void __user *)(unsigned long)user_chunk.chunk_data; cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data; if (p->chunks[i].chunk_id != RADEON_CHUNK_ID_IB) { size = p->chunks[i].length_dw * sizeof(uint32_t); p->chunks[i].kdata = kmalloc(size, GFP_KERNEL); if (p->chunks[i].kdata == NULL) { return -ENOMEM; } if (DRM_COPY_FROM_USER(p->chunks[i].kdata, p->chunks[i].user_ptr, size)) { return -EFAULT; } } else { p->chunks[i].kpage[0] = kmalloc(PAGE_SIZE, GFP_KERNEL); p->chunks[i].kpage[1] = kmalloc(PAGE_SIZE, GFP_KERNEL); if (p->chunks[i].kpage[0] == NULL || p->chunks[i].kpage[1] == NULL) { kfree(p->chunks[i].kpage[0]); kfree(p->chunks[i].kpage[1]); return -ENOMEM; } p->chunks[i].kpage_idx[0] = -1; p->chunks[i].kpage_idx[1] = -1; p->chunks[i].last_copied_page = -1; p->chunks[i].last_page_index = ((p->chunks[i].length_dw * 4) - 1) / PAGE_SIZE; } } if (p->chunks[p->chunk_ib_idx].length_dw > (16 * 1024)) { DRM_ERROR("cs IB too big: %d\n", p->chunks[p->chunk_ib_idx].length_dw); return -EINVAL; } return 0; } /** * cs_parser_fini() - clean parser states * @parser: parser structure holding parsing context. * @error: error number * * If error is set than unvalidate buffer, otherwise just free memory * used by parsing context. **/ static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error) { unsigned i; if (!error && parser->ib) { radeon_bo_list_fence(&parser->validated, parser->ib->fence); } radeon_bo_list_unreserve(&parser->validated); if (parser->relocs != NULL) { for (i = 0; i < parser->nrelocs; i++) { if (parser->relocs[i].gobj) drm_gem_object_unreference_unlocked(parser->relocs[i].gobj); } } kfree(parser->track); kfree(parser->relocs); kfree(parser->relocs_ptr); for (i = 0; i < parser->nchunks; i++) { kfree(parser->chunks[i].kdata); kfree(parser->chunks[i].kpage[0]); kfree(parser->chunks[i].kpage[1]); } kfree(parser->chunks); kfree(parser->chunks_array); radeon_ib_free(parser->rdev, &parser->ib); } int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) { struct radeon_device *rdev = dev->dev_private; struct radeon_cs_parser parser; struct radeon_cs_chunk *ib_chunk; int r; mutex_lock(&rdev->cs_mutex); /* initialize parser */ memset(&parser, 0, sizeof(struct radeon_cs_parser)); parser.filp = filp; parser.rdev = rdev; parser.dev = rdev->dev; r = radeon_cs_parser_init(&parser, data); if (r) { DRM_ERROR("Failed to initialize parser !\n"); radeon_cs_parser_fini(&parser, r); mutex_unlock(&rdev->cs_mutex); return r; } r = radeon_ib_get(rdev, &parser.ib); if (r) { DRM_ERROR("Failed to get ib !\n"); radeon_cs_parser_fini(&parser, r); mutex_unlock(&rdev->cs_mutex); return r; } r = radeon_cs_parser_relocs(&parser); if (r) { if (r != -ERESTARTSYS) DRM_ERROR("Failed to parse relocation %d!\n", r); radeon_cs_parser_fini(&parser, r); mutex_unlock(&rdev->cs_mutex); return r; } /* Copy the packet into the IB, the parser will read from the * input memory (cached) and write to the IB (which can be * uncached). */ ib_chunk = &parser.chunks[parser.chunk_ib_idx]; parser.ib->length_dw = ib_chunk->length_dw; r = radeon_cs_parse(&parser); if (r || parser.parser_error) { DRM_ERROR("Invalid command stream !\n"); radeon_cs_parser_fini(&parser, r); mutex_unlock(&rdev->cs_mutex); return r; } r = radeon_cs_finish_pages(&parser); if (r) { DRM_ERROR("Invalid command stream !\n"); radeon_cs_parser_fini(&parser, r); mutex_unlock(&rdev->cs_mutex); return r; } r = radeon_ib_schedule(rdev, parser.ib); if (r) { DRM_ERROR("Faild to schedule IB !\n"); } radeon_cs_parser_fini(&parser, r); mutex_unlock(&rdev->cs_mutex); return r; } int radeon_cs_finish_pages(struct radeon_cs_parser *p) { struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx]; int i; int size = PAGE_SIZE; for (i = ibc->last_copied_page + 1; i <= ibc->last_page_index; i++) { if (i == ibc->last_page_index) { size = (ibc->length_dw * 4) % PAGE_SIZE; if (size == 0) size = PAGE_SIZE; } if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)), ibc->user_ptr + (i * PAGE_SIZE), size)) return -EFAULT; } return 0; } int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx) { int new_page; struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx]; int i; int size = PAGE_SIZE; for (i = ibc->last_copied_page + 1; i < pg_idx; i++) { if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)), ibc->user_ptr + (i * PAGE_SIZE), PAGE_SIZE)) { p->parser_error = -EFAULT; return 0; } } new_page = ibc->kpage_idx[0] < ibc->kpage_idx[1] ? 0 : 1; if (pg_idx == ibc->last_page_index) { size = (ibc->length_dw * 4) % PAGE_SIZE; if (size == 0) size = PAGE_SIZE; } if (DRM_COPY_FROM_USER(ibc->kpage[new_page], ibc->user_ptr + (pg_idx * PAGE_SIZE), size)) { p->parser_error = -EFAULT; return 0; } /* copy to IB here */ memcpy((void *)(p->ib->ptr+(pg_idx*(PAGE_SIZE/4))), ibc->kpage[new_page], size); ibc->last_copied_page = pg_idx; ibc->kpage_idx[new_page] = pg_idx; return new_page; }