1 /* 2 * Copyright 2008 Jerome Glisse. 3 * All Rights Reserved. 4 * 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: 11 * 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 14 * Software. 15 * 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. 23 * 24 * Authors: 25 * Jerome Glisse <glisse@freedesktop.org> 26 */ 27 #include "drmP.h" 28 #include "radeon_drm.h" 29 #include "radeon_reg.h" 30 #include "radeon.h" 31 32 void r100_cs_dump_packet(struct radeon_cs_parser *p, 33 struct radeon_cs_packet *pkt); 34 35 int radeon_cs_parser_relocs(struct radeon_cs_parser *p) 36 { 37 struct drm_device *ddev = p->rdev->ddev; 38 struct radeon_cs_chunk *chunk; 39 unsigned i, j; 40 bool duplicate; 41 42 if (p->chunk_relocs_idx == -1) { 43 return 0; 44 } 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) { 50 return -ENOMEM; 51 } 52 p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL); 53 if (p->relocs == NULL) { 54 return -ENOMEM; 55 } 56 for (i = 0; i < p->nrelocs; i++) { 57 struct drm_radeon_cs_reloc *r; 58 59 duplicate = false; 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]; 64 duplicate = true; 65 break; 66 } 67 } 68 if (!duplicate) { 69 p->relocs[i].gobj = drm_gem_object_lookup(ddev, 70 p->filp, 71 r->handle); 72 if (p->relocs[i].gobj == NULL) { 73 DRM_ERROR("gem object lookup failed 0x%x\n", 74 r->handle); 75 return -ENOENT; 76 } 77 p->relocs_ptr[i] = &p->relocs[i]; 78 p->relocs[i].robj = gem_to_radeon_bo(p->relocs[i].gobj); 79 p->relocs[i].lobj.bo = p->relocs[i].robj; 80 p->relocs[i].lobj.wdomain = r->write_domain; 81 p->relocs[i].lobj.rdomain = r->read_domains; 82 p->relocs[i].lobj.tv.bo = &p->relocs[i].robj->tbo; 83 p->relocs[i].handle = r->handle; 84 p->relocs[i].flags = r->flags; 85 radeon_bo_list_add_object(&p->relocs[i].lobj, 86 &p->validated); 87 } 88 } 89 return radeon_bo_list_validate(&p->validated); 90 } 91 92 int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data) 93 { 94 struct drm_radeon_cs *cs = data; 95 uint64_t *chunk_array_ptr; 96 unsigned size, i; 97 98 if (!cs->num_chunks) { 99 return 0; 100 } 101 /* get chunks */ 102 INIT_LIST_HEAD(&p->validated); 103 p->idx = 0; 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) { 108 return -ENOMEM; 109 } 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)) { 113 return -EFAULT; 114 } 115 p->nchunks = cs->num_chunks; 116 p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL); 117 if (p->chunks == NULL) { 118 return -ENOMEM; 119 } 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; 124 125 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))) { 128 return -EFAULT; 129 } 130 p->chunks[i].length_dw = user_chunk.length_dw; 131 p->chunks[i].kdata = NULL; 132 p->chunks[i].chunk_id = user_chunk.chunk_id; 133 134 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) { 135 p->chunk_relocs_idx = i; 136 } 137 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_IB) { 138 p->chunk_ib_idx = i; 139 /* zero length IB isn't useful */ 140 if (p->chunks[i].length_dw == 0) 141 return -EINVAL; 142 } 143 144 p->chunks[i].length_dw = user_chunk.length_dw; 145 p->chunks[i].user_ptr = (void __user *)(unsigned long)user_chunk.chunk_data; 146 147 cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data; 148 if (p->chunks[i].chunk_id != RADEON_CHUNK_ID_IB) { 149 size = p->chunks[i].length_dw * sizeof(uint32_t); 150 p->chunks[i].kdata = kmalloc(size, GFP_KERNEL); 151 if (p->chunks[i].kdata == NULL) { 152 return -ENOMEM; 153 } 154 if (DRM_COPY_FROM_USER(p->chunks[i].kdata, 155 p->chunks[i].user_ptr, size)) { 156 return -EFAULT; 157 } 158 } else { 159 p->chunks[i].kpage[0] = kmalloc(PAGE_SIZE, GFP_KERNEL); 160 p->chunks[i].kpage[1] = kmalloc(PAGE_SIZE, GFP_KERNEL); 161 if (p->chunks[i].kpage[0] == NULL || p->chunks[i].kpage[1] == NULL) { 162 kfree(p->chunks[i].kpage[0]); 163 kfree(p->chunks[i].kpage[1]); 164 return -ENOMEM; 165 } 166 p->chunks[i].kpage_idx[0] = -1; 167 p->chunks[i].kpage_idx[1] = -1; 168 p->chunks[i].last_copied_page = -1; 169 p->chunks[i].last_page_index = ((p->chunks[i].length_dw * 4) - 1) / PAGE_SIZE; 170 } 171 } 172 if (p->chunks[p->chunk_ib_idx].length_dw > (16 * 1024)) { 173 DRM_ERROR("cs IB too big: %d\n", 174 p->chunks[p->chunk_ib_idx].length_dw); 175 return -EINVAL; 176 } 177 return 0; 178 } 179 180 /** 181 * cs_parser_fini() - clean parser states 182 * @parser: parser structure holding parsing context. 183 * @error: error number 184 * 185 * If error is set than unvalidate buffer, otherwise just free memory 186 * used by parsing context. 187 **/ 188 static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error) 189 { 190 unsigned i; 191 192 193 if (!error && parser->ib) 194 ttm_eu_fence_buffer_objects(&parser->validated, 195 parser->ib->fence); 196 else 197 ttm_eu_backoff_reservation(&parser->validated); 198 199 if (parser->relocs != NULL) { 200 for (i = 0; i < parser->nrelocs; i++) { 201 if (parser->relocs[i].gobj) 202 drm_gem_object_unreference_unlocked(parser->relocs[i].gobj); 203 } 204 } 205 kfree(parser->track); 206 kfree(parser->relocs); 207 kfree(parser->relocs_ptr); 208 for (i = 0; i < parser->nchunks; i++) { 209 kfree(parser->chunks[i].kdata); 210 kfree(parser->chunks[i].kpage[0]); 211 kfree(parser->chunks[i].kpage[1]); 212 } 213 kfree(parser->chunks); 214 kfree(parser->chunks_array); 215 radeon_ib_free(parser->rdev, &parser->ib); 216 } 217 218 int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) 219 { 220 struct radeon_device *rdev = dev->dev_private; 221 struct radeon_cs_parser parser; 222 struct radeon_cs_chunk *ib_chunk; 223 int r; 224 225 mutex_lock(&rdev->cs_mutex); 226 /* initialize parser */ 227 memset(&parser, 0, sizeof(struct radeon_cs_parser)); 228 parser.filp = filp; 229 parser.rdev = rdev; 230 parser.dev = rdev->dev; 231 r = radeon_cs_parser_init(&parser, data); 232 if (r) { 233 DRM_ERROR("Failed to initialize parser !\n"); 234 radeon_cs_parser_fini(&parser, r); 235 mutex_unlock(&rdev->cs_mutex); 236 return r; 237 } 238 r = radeon_ib_get(rdev, &parser.ib); 239 if (r) { 240 DRM_ERROR("Failed to get ib !\n"); 241 radeon_cs_parser_fini(&parser, r); 242 mutex_unlock(&rdev->cs_mutex); 243 return r; 244 } 245 r = radeon_cs_parser_relocs(&parser); 246 if (r) { 247 if (r != -ERESTARTSYS) 248 DRM_ERROR("Failed to parse relocation %d!\n", r); 249 radeon_cs_parser_fini(&parser, r); 250 mutex_unlock(&rdev->cs_mutex); 251 return r; 252 } 253 /* Copy the packet into the IB, the parser will read from the 254 * input memory (cached) and write to the IB (which can be 255 * uncached). */ 256 ib_chunk = &parser.chunks[parser.chunk_ib_idx]; 257 parser.ib->length_dw = ib_chunk->length_dw; 258 r = radeon_cs_parse(&parser); 259 if (r || parser.parser_error) { 260 DRM_ERROR("Invalid command stream !\n"); 261 radeon_cs_parser_fini(&parser, r); 262 mutex_unlock(&rdev->cs_mutex); 263 return r; 264 } 265 r = radeon_cs_finish_pages(&parser); 266 if (r) { 267 DRM_ERROR("Invalid command stream !\n"); 268 radeon_cs_parser_fini(&parser, r); 269 mutex_unlock(&rdev->cs_mutex); 270 return r; 271 } 272 r = radeon_ib_schedule(rdev, parser.ib); 273 if (r) { 274 DRM_ERROR("Failed to schedule IB !\n"); 275 } 276 radeon_cs_parser_fini(&parser, r); 277 mutex_unlock(&rdev->cs_mutex); 278 return r; 279 } 280 281 int radeon_cs_finish_pages(struct radeon_cs_parser *p) 282 { 283 struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx]; 284 int i; 285 int size = PAGE_SIZE; 286 287 for (i = ibc->last_copied_page + 1; i <= ibc->last_page_index; i++) { 288 if (i == ibc->last_page_index) { 289 size = (ibc->length_dw * 4) % PAGE_SIZE; 290 if (size == 0) 291 size = PAGE_SIZE; 292 } 293 294 if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)), 295 ibc->user_ptr + (i * PAGE_SIZE), 296 size)) 297 return -EFAULT; 298 } 299 return 0; 300 } 301 302 int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx) 303 { 304 int new_page; 305 struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx]; 306 int i; 307 int size = PAGE_SIZE; 308 309 for (i = ibc->last_copied_page + 1; i < pg_idx; i++) { 310 if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)), 311 ibc->user_ptr + (i * PAGE_SIZE), 312 PAGE_SIZE)) { 313 p->parser_error = -EFAULT; 314 return 0; 315 } 316 } 317 318 new_page = ibc->kpage_idx[0] < ibc->kpage_idx[1] ? 0 : 1; 319 320 if (pg_idx == ibc->last_page_index) { 321 size = (ibc->length_dw * 4) % PAGE_SIZE; 322 if (size == 0) 323 size = PAGE_SIZE; 324 } 325 326 if (DRM_COPY_FROM_USER(ibc->kpage[new_page], 327 ibc->user_ptr + (pg_idx * PAGE_SIZE), 328 size)) { 329 p->parser_error = -EFAULT; 330 return 0; 331 } 332 333 /* copy to IB here */ 334 memcpy((void *)(p->ib->ptr+(pg_idx*(PAGE_SIZE/4))), ibc->kpage[new_page], size); 335 336 ibc->last_copied_page = pg_idx; 337 ibc->kpage_idx[new_page] = pg_idx; 338 339 return new_page; 340 } 341