2 * Copyright 2008 Jerome Glisse.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
25 * Jerome Glisse <glisse@freedesktop.org>
28 #include "radeon_drm.h"
29 #include "radeon_reg.h"
32 void r100_cs_dump_packet(struct radeon_cs_parser *p,
33 struct radeon_cs_packet *pkt);
35 int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
37 struct drm_device *ddev = p->rdev->ddev;
38 struct radeon_cs_chunk *chunk;
42 if (p->chunk_relocs_idx == -1) {
45 chunk = &p->chunks[p->chunk_relocs_idx];
46 /* FIXME: we assume that each relocs use 4 dwords */
47 p->nrelocs = chunk->length_dw / 4;
48 p->relocs_ptr = kcalloc(p->nrelocs, sizeof(void *), GFP_KERNEL);
49 if (p->relocs_ptr == NULL) {
52 p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL);
53 if (p->relocs == NULL) {
56 for (i = 0; i < p->nrelocs; i++) {
57 struct drm_radeon_cs_reloc *r;
60 r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4];
61 for (j = 0; j < p->nrelocs; j++) {
62 if (r->handle == p->relocs[j].handle) {
63 p->relocs_ptr[i] = &p->relocs[j];
69 p->relocs[i].gobj = drm_gem_object_lookup(ddev,
72 if (p->relocs[i].gobj == NULL) {
73 DRM_ERROR("gem object lookup failed 0x%x\n",
77 p->relocs_ptr[i] = &p->relocs[i];
78 p->relocs[i].robj = p->relocs[i].gobj->driver_private;
79 p->relocs[i].lobj.robj = p->relocs[i].robj;
80 p->relocs[i].lobj.rdomain = r->read_domains;
81 p->relocs[i].lobj.wdomain = r->write_domain;
82 p->relocs[i].handle = r->handle;
83 p->relocs[i].flags = r->flags;
84 INIT_LIST_HEAD(&p->relocs[i].lobj.list);
85 radeon_object_list_add_object(&p->relocs[i].lobj,
89 return radeon_object_list_validate(&p->validated, p->ib->fence);
92 int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
94 struct drm_radeon_cs *cs = data;
95 uint64_t *chunk_array_ptr;
98 if (!cs->num_chunks) {
102 INIT_LIST_HEAD(&p->validated);
104 p->chunk_ib_idx = -1;
105 p->chunk_relocs_idx = -1;
106 p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL);
107 if (p->chunks_array == NULL) {
110 chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks);
111 if (DRM_COPY_FROM_USER(p->chunks_array, chunk_array_ptr,
112 sizeof(uint64_t)*cs->num_chunks)) {
115 p->nchunks = cs->num_chunks;
116 p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL);
117 if (p->chunks == NULL) {
120 for (i = 0; i < p->nchunks; i++) {
121 struct drm_radeon_cs_chunk __user **chunk_ptr = NULL;
122 struct drm_radeon_cs_chunk user_chunk;
123 uint32_t __user *cdata;
125 chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i];
126 if (DRM_COPY_FROM_USER(&user_chunk, chunk_ptr,
127 sizeof(struct drm_radeon_cs_chunk))) {
130 p->chunks[i].chunk_id = user_chunk.chunk_id;
131 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) {
132 p->chunk_relocs_idx = i;
134 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_IB) {
137 p->chunks[i].length_dw = user_chunk.length_dw;
138 cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data;
140 p->chunks[i].kdata = NULL;
141 size = p->chunks[i].length_dw * sizeof(uint32_t);
142 p->chunks[i].kdata = kzalloc(size, GFP_KERNEL);
143 if (p->chunks[i].kdata == NULL) {
146 if (DRM_COPY_FROM_USER(p->chunks[i].kdata, cdata, size)) {
150 if (p->chunks[p->chunk_ib_idx].length_dw > (16 * 1024)) {
151 DRM_ERROR("cs IB too big: %d\n",
152 p->chunks[p->chunk_ib_idx].length_dw);
159 * cs_parser_fini() - clean parser states
160 * @parser: parser structure holding parsing context.
161 * @error: error number
163 * If error is set than unvalidate buffer, otherwise just free memory
164 * used by parsing context.
166 static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
171 radeon_object_list_unvalidate(&parser->validated);
173 radeon_object_list_clean(&parser->validated);
175 for (i = 0; i < parser->nrelocs; i++) {
176 if (parser->relocs[i].gobj) {
177 mutex_lock(&parser->rdev->ddev->struct_mutex);
178 drm_gem_object_unreference(parser->relocs[i].gobj);
179 mutex_unlock(&parser->rdev->ddev->struct_mutex);
182 kfree(parser->relocs);
183 kfree(parser->relocs_ptr);
184 for (i = 0; i < parser->nchunks; i++) {
185 kfree(parser->chunks[i].kdata);
187 kfree(parser->chunks);
188 kfree(parser->chunks_array);
189 radeon_ib_free(parser->rdev, &parser->ib);
192 int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
194 struct radeon_device *rdev = dev->dev_private;
195 struct radeon_cs_parser parser;
196 struct radeon_cs_chunk *ib_chunk;
199 mutex_lock(&rdev->cs_mutex);
200 if (rdev->gpu_lockup) {
201 mutex_unlock(&rdev->cs_mutex);
204 /* initialize parser */
205 memset(&parser, 0, sizeof(struct radeon_cs_parser));
208 r = radeon_cs_parser_init(&parser, data);
210 DRM_ERROR("Failed to initialize parser !\n");
211 radeon_cs_parser_fini(&parser, r);
212 mutex_unlock(&rdev->cs_mutex);
215 r = radeon_ib_get(rdev, &parser.ib);
217 DRM_ERROR("Failed to get ib !\n");
218 radeon_cs_parser_fini(&parser, r);
219 mutex_unlock(&rdev->cs_mutex);
222 r = radeon_cs_parser_relocs(&parser);
224 DRM_ERROR("Failed to parse relocation !\n");
225 radeon_cs_parser_fini(&parser, r);
226 mutex_unlock(&rdev->cs_mutex);
229 /* Copy the packet into the IB, the parser will read from the
230 * input memory (cached) and write to the IB (which can be
232 ib_chunk = &parser.chunks[parser.chunk_ib_idx];
233 parser.ib->length_dw = ib_chunk->length_dw;
234 memcpy((void *)parser.ib->ptr, ib_chunk->kdata, ib_chunk->length_dw*4);
235 r = radeon_cs_parse(&parser);
237 DRM_ERROR("Invalid command stream !\n");
238 radeon_cs_parser_fini(&parser, r);
239 mutex_unlock(&rdev->cs_mutex);
242 r = radeon_ib_schedule(rdev, parser.ib);
244 DRM_ERROR("Faild to schedule IB !\n");
246 radeon_cs_parser_fini(&parser, r);
247 mutex_unlock(&rdev->cs_mutex);