radeon_drm_winsys.c revision ce12f826927cf2d3ac3fd70d893abfb07adc23db 
1/*
2 * Copyright © 2009 Corbin Simpson
3 * Copyright © 2011 Marek Olšák <maraeo@gmail.com>
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
15 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
16 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
17 * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
18 * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * The above copyright notice and this permission notice (including the
24 * next paragraph) shall be included in all copies or substantial portions
25 * of the Software.
26 */
27/*
28 * Authors:
29 *      Corbin Simpson <MostAwesomeDude@gmail.com>
30 *      Joakim Sindholt <opensource@zhasha.com>
31 *      Marek Olšák <maraeo@gmail.com>
32 */
33
34#include "radeon_drm_bo.h"
35#include "radeon_drm_cs.h"
36#include "radeon_drm_public.h"
37
38#include "pipebuffer/pb_bufmgr.h"
39#include "util/u_memory.h"
40
41#include <xf86drm.h>
42#include <stdio.h>
43
44#ifndef RADEON_INFO_WANT_HYPERZ
45#define RADEON_INFO_WANT_HYPERZ 7
46#endif
47#ifndef RADEON_INFO_WANT_CMASK
48#define RADEON_INFO_WANT_CMASK 8
49#endif
50#ifndef RADEON_INFO_NUM_BACKENDS
51#define RADEON_INFO_NUM_BACKENDS 10
52#endif
53
54/* Enable/disable feature access for one command stream.
55 * If enable == TRUE, return TRUE on success.
56 * Otherwise, return FALSE.
57 *
58 * We basically do the same thing kernel does, because we have to deal
59 * with multiple contexts (here command streams) backed by one winsys. */
60static boolean radeon_set_fd_access(struct radeon_drm_cs *applier,
61                                    struct radeon_drm_cs **owner,
62                                    pipe_mutex *mutex,
63                                    unsigned request, boolean enable)
64{
65    struct drm_radeon_info info = {0};
66    unsigned value = enable ? 1 : 0;
67
68    pipe_mutex_lock(*mutex);
69
70    /* Early exit if we are sure the request will fail. */
71    if (enable) {
72        if (*owner) {
73            pipe_mutex_unlock(*mutex);
74            return FALSE;
75        }
76    } else {
77        if (*owner != applier) {
78            pipe_mutex_unlock(*mutex);
79            return FALSE;
80        }
81    }
82
83    /* Pass through the request to the kernel. */
84    info.value = (unsigned long)&value;
85    info.request = request;
86    if (drmCommandWriteRead(applier->ws->fd, DRM_RADEON_INFO,
87                            &info, sizeof(info)) != 0) {
88        pipe_mutex_unlock(*mutex);
89        return FALSE;
90    }
91
92    /* Update the rights in the winsys. */
93    if (enable) {
94        if (value) {
95            *owner = applier;
96            fprintf(stderr, "radeon: Acquired Hyper-Z.\n");
97            pipe_mutex_unlock(*mutex);
98            return TRUE;
99        }
100    } else {
101        *owner = NULL;
102        fprintf(stderr, "radeon: Released Hyper-Z.\n");
103    }
104
105    pipe_mutex_unlock(*mutex);
106    return FALSE;
107}
108
109static boolean radeon_get_drm_value(int fd, unsigned request,
110                                    const char *name, uint32_t *out)
111{
112    struct drm_radeon_info info = {0};
113    int retval;
114
115    info.value = (unsigned long)out;
116    info.request = request;
117
118    retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
119    if (retval) {
120        fprintf(stderr, "%s: Failed to get %s, error number %d\n",
121                __func__, name, retval);
122        return FALSE;
123    }
124    return TRUE;
125}
126
127/* Helper function to do the ioctls needed for setup and init. */
128static boolean do_winsys_init(struct radeon_drm_winsys *ws)
129{
130    struct drm_radeon_gem_info gem_info = {0};
131    int retval;
132    drmVersionPtr version;
133
134    /* We do things in a specific order here.
135     *
136     * DRM version first. We need to be sure we're running on a KMS chipset.
137     * This is also for some features.
138     *
139     * Then, the PCI ID. This is essential and should return usable numbers
140     * for all Radeons. If this fails, we probably got handed an FD for some
141     * non-Radeon card.
142     *
143     * The GEM info is actually bogus on the kernel side, as well as our side
144     * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
145     * we don't actually use the info for anything yet.
146     *
147     * The GB and Z pipe requests should always succeed, but they might not
148     * return sensical values for all chipsets, but that's alright because
149     * the pipe drivers already know that.
150     */
151
152    /* Get DRM version. */
153    version = drmGetVersion(ws->fd);
154    if (version->version_major != 2 ||
155        version->version_minor < 3) {
156        fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
157                "only compatible with 2.3.x (kernel 2.6.34) or later.\n",
158                __FUNCTION__,
159                version->version_major,
160                version->version_minor,
161                version->version_patchlevel);
162        drmFreeVersion(version);
163        return FALSE;
164    }
165
166    ws->info.drm_major = version->version_major;
167    ws->info.drm_minor = version->version_minor;
168    ws->info.drm_patchlevel = version->version_patchlevel;
169    drmFreeVersion(version);
170
171    /* Get PCI ID. */
172    if (!radeon_get_drm_value(ws->fd, RADEON_INFO_DEVICE_ID, "PCI ID",
173                              &ws->info.pci_id))
174        return FALSE;
175
176    /* Check PCI ID. */
177    switch (ws->info.pci_id) {
178#define CHIPSET(pci_id, name, family) case pci_id:
179#include "pci_ids/r300_pci_ids.h"
180#undef CHIPSET
181        ws->gen = R300;
182        break;
183
184#define CHIPSET(pci_id, name, family) case pci_id:
185#include "pci_ids/r600_pci_ids.h"
186#undef CHIPSET
187        ws->gen = R600;
188        break;
189
190    default:
191        fprintf(stderr, "radeon: Invalid PCI ID.\n");
192        return FALSE;
193    }
194
195    /* Get GEM info. */
196    retval = drmCommandWriteRead(ws->fd, DRM_RADEON_GEM_INFO,
197            &gem_info, sizeof(gem_info));
198    if (retval) {
199        fprintf(stderr, "%s: Failed to get MM info, error number %d\n",
200                __FUNCTION__, retval);
201        return FALSE;
202    }
203    ws->info.gart_size = gem_info.gart_size;
204    ws->info.vram_size = gem_info.vram_size;
205
206    ws->num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
207
208    /* Generation-specific queries. */
209    if (ws->gen == R300) {
210        if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_GB_PIPES,
211                                  "GB pipe count",
212                                  &ws->info.r300_num_gb_pipes))
213            return FALSE;
214
215        if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_Z_PIPES,
216                                  "Z pipe count",
217                                  &ws->info.r300_num_z_pipes))
218            return FALSE;
219    }
220    else if (ws->gen == R600) {
221        if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_BACKENDS,
222                                  "num backends",
223                                  &ws->info.r600_num_backends))
224            return FALSE;
225    }
226
227    return TRUE;
228}
229
230static void radeon_winsys_destroy(struct radeon_winsys *rws)
231{
232    struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
233
234    pipe_mutex_destroy(ws->hyperz_owner_mutex);
235    pipe_mutex_destroy(ws->cmask_owner_mutex);
236
237    ws->cman->destroy(ws->cman);
238    ws->kman->destroy(ws->kman);
239    FREE(rws);
240}
241
242static void radeon_query_info(struct radeon_winsys *rws,
243                              struct radeon_info *info)
244{
245    *info = ((struct radeon_drm_winsys *)rws)->info;
246}
247
248static boolean radeon_cs_request_feature(struct radeon_winsys_cs *rcs,
249                                         enum radeon_feature_id fid,
250                                         boolean enable)
251{
252    struct radeon_drm_cs *cs = radeon_drm_cs(rcs);
253
254    switch (fid) {
255    case RADEON_FID_R300_HYPERZ_ACCESS:
256        if (debug_get_bool_option("RADEON_HYPERZ", FALSE)) {
257            return radeon_set_fd_access(cs, &cs->ws->hyperz_owner,
258                                        &cs->ws->hyperz_owner_mutex,
259                                        RADEON_INFO_WANT_HYPERZ, enable);
260        } else {
261            return FALSE;
262        }
263
264    case RADEON_FID_R300_CMASK_ACCESS:
265        if (debug_get_bool_option("RADEON_CMASK", FALSE)) {
266            return radeon_set_fd_access(cs, &cs->ws->cmask_owner,
267                                        &cs->ws->cmask_owner_mutex,
268                                        RADEON_INFO_WANT_CMASK, enable);
269        } else {
270            return FALSE;
271        }
272    }
273    return FALSE;
274}
275
276struct radeon_winsys *radeon_drm_winsys_create(int fd)
277{
278    struct radeon_drm_winsys *ws = CALLOC_STRUCT(radeon_drm_winsys);
279    if (!ws) {
280        return NULL;
281    }
282
283    ws->fd = fd;
284    ws->info.fd = fd;
285
286    if (!do_winsys_init(ws))
287        goto fail;
288
289    /* Create managers. */
290    ws->kman = radeon_bomgr_create(ws);
291    if (!ws->kman)
292	goto fail;
293    ws->cman = pb_cache_manager_create(ws->kman, 1000000);
294    if (!ws->cman)
295	goto fail;
296
297    /* Set functions. */
298    ws->base.destroy = radeon_winsys_destroy;
299    ws->base.query_info = radeon_query_info;
300    ws->base.cs_request_feature = radeon_cs_request_feature;
301
302    radeon_bomgr_init_functions(ws);
303    radeon_drm_cs_init_functions(ws);
304
305    pipe_mutex_init(ws->hyperz_owner_mutex);
306    pipe_mutex_init(ws->cmask_owner_mutex);
307
308    return &ws->base;
309
310fail:
311    if (ws->cman)
312	ws->cman->destroy(ws->cman);
313    if (ws->kman)
314	ws->kman->destroy(ws->kman);
315    FREE(ws);
316    return NULL;
317}
318