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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 @@
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
32void r100_cs_dump_packet(struct radeon_cs_parser *p,
33 struct radeon_cs_packet *pkt);
34
35int 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
92int 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 **/
166static 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
192int 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}
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-08 14:29:52 -0500