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 -EINVAL; 76 } 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, 86 &p->validated); 87 } 88 } 89 return radeon_object_list_validate(&p->validated, p->ib->fence); 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].chunk_id = user_chunk.chunk_id; 131 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) { 132 p->chunk_relocs_idx = i; 133 } 134 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_IB) { 135 p->chunk_ib_idx = i; 136 } 137 p->chunks[i].length_dw = user_chunk.length_dw; 138 cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data; 139 140 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) { 144 return -ENOMEM; 145 } 146 if (DRM_COPY_FROM_USER(p->chunks[i].kdata, cdata, size)) { 147 return -EFAULT; 148 } 149 } 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); 153 return -EINVAL; 154 } 155 return 0; 156 } 157 158 /** 159 * cs_parser_fini() - clean parser states 160 * @parser: parser structure holding parsing context. 161 * @error: error number 162 * 163 * If error is set than unvalidate buffer, otherwise just free memory 164 * used by parsing context. 165 **/ 166 static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error) 167 { 168 unsigned i; 169 170 if (error) { 171 radeon_object_list_unvalidate(&parser->validated); 172 } else { 173 radeon_object_list_clean(&parser->validated); 174 } 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); 180 } 181 } 182 kfree(parser->relocs); 183 kfree(parser->relocs_ptr); 184 for (i = 0; i < parser->nchunks; i++) { 185 kfree(parser->chunks[i].kdata); 186 } 187 kfree(parser->chunks); 188 kfree(parser->chunks_array); 189 radeon_ib_free(parser->rdev, &parser->ib); 190 } 191 192 int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) 193 { 194 struct radeon_device *rdev = dev->dev_private; 195 struct radeon_cs_parser parser; 196 struct radeon_cs_chunk *ib_chunk; 197 int r; 198 199 mutex_lock(&rdev->cs_mutex); 200 if (rdev->gpu_lockup) { 201 mutex_unlock(&rdev->cs_mutex); 202 return -EINVAL; 203 } 204 /* initialize parser */ 205 memset(&parser, 0, sizeof(struct radeon_cs_parser)); 206 parser.filp = filp; 207 parser.rdev = rdev; 208 r = radeon_cs_parser_init(&parser, data); 209 if (r) { 210 DRM_ERROR("Failed to initialize parser !\n"); 211 radeon_cs_parser_fini(&parser, r); 212 mutex_unlock(&rdev->cs_mutex); 213 return r; 214 } 215 r = radeon_ib_get(rdev, &parser.ib); 216 if (r) { 217 DRM_ERROR("Failed to get ib !\n"); 218 radeon_cs_parser_fini(&parser, r); 219 mutex_unlock(&rdev->cs_mutex); 220 return r; 221 } 222 r = radeon_cs_parser_relocs(&parser); 223 if (r) { 224 DRM_ERROR("Failed to parse relocation !\n"); 225 radeon_cs_parser_fini(&parser, r); 226 mutex_unlock(&rdev->cs_mutex); 227 return r; 228 } 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 231 * uncached). */ 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); 236 if (r) { 237 DRM_ERROR("Invalid command stream !\n"); 238 radeon_cs_parser_fini(&parser, r); 239 mutex_unlock(&rdev->cs_mutex); 240 return r; 241 } 242 r = radeon_ib_schedule(rdev, parser.ib); 243 if (r) { 244 DRM_ERROR("Faild to schedule IB !\n"); 245 } 246 radeon_cs_parser_fini(&parser, r); 247 mutex_unlock(&rdev->cs_mutex); 248 return r; 249 } 250