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771fe6b9 JG |
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 | } |