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path: root/drivers/gpu/drm/radeon/radeon_cs.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_cs.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_cs.c249
1 files changed, 249 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
new file mode 100644
index 00000000000..b843f9bdfb1
--- /dev/null
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -0,0 +1,249 @@
+/*
+ * 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 -EINVAL;
+ }
+ p->relocs_ptr[i] = &p->relocs[i];
+ p->relocs[i].robj = p->relocs[i].gobj->driver_private;
+ p->relocs[i].lobj.robj = 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_object_list_add_object(&p->relocs[i].lobj,
+ &p->validated);
+ }
+ }
+ return radeon_object_list_validate(&p->validated, p->ib->fence);
+}
+
+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].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;
+ }
+ p->chunks[i].length_dw = user_chunk.length_dw;
+ cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data;
+
+ p->chunks[i].kdata = NULL;
+ size = p->chunks[i].length_dw * sizeof(uint32_t);
+ p->chunks[i].kdata = kzalloc(size, GFP_KERNEL);
+ if (p->chunks[i].kdata == NULL) {
+ return -ENOMEM;
+ }
+ if (DRM_COPY_FROM_USER(p->chunks[i].kdata, cdata, size)) {
+ return -EFAULT;
+ }
+ }
+ 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) {
+ radeon_object_list_unvalidate(&parser->validated);
+ } else {
+ radeon_object_list_clean(&parser->validated);
+ }
+ for (i = 0; i < parser->nrelocs; i++) {
+ if (parser->relocs[i].gobj) {
+ mutex_lock(&parser->rdev->ddev->struct_mutex);
+ drm_gem_object_unreference(parser->relocs[i].gobj);
+ mutex_unlock(&parser->rdev->ddev->struct_mutex);
+ }
+ }
+ kfree(parser->relocs);
+ kfree(parser->relocs_ptr);
+ for (i = 0; i < parser->nchunks; i++) {
+ kfree(parser->chunks[i].kdata);
+ }
+ 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);
+ if (rdev->gpu_lockup) {
+ mutex_unlock(&rdev->cs_mutex);
+ return -EINVAL;
+ }
+ /* initialize parser */
+ memset(&parser, 0, sizeof(struct radeon_cs_parser));
+ parser.filp = filp;
+ parser.rdev = rdev;
+ 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) {
+ DRM_ERROR("Failed to parse relocation !\n");
+ 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;
+ memcpy((void *)parser.ib->ptr, ib_chunk->kdata, ib_chunk->length_dw*4);
+ r = radeon_cs_parse(&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;
+}