1 /**************************************************************************
3 * Copyright 2011 Intel Corporation
4 * Copyright 2012 Francisco Jerez
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Kristian Høgsberg <krh@bitplanet.net>
29 * Benjamin Franzke <benjaminfranzke@googlemail.com>
31 **************************************************************************/
37 #ifdef HAVE_PIPE_LOADER_XCB
44 #include "state_tracker/drm_driver.h"
45 #include "pipe_loader_priv.h"
47 #include "util/u_memory.h"
48 #include "util/u_dl.h"
49 #include "util/u_debug.h"
51 #define DRM_RENDER_NODE_DEV_NAME_FORMAT "%s/renderD%d"
52 #define DRM_RENDER_NODE_MAX_NODES 63
53 #define DRM_RENDER_NODE_MIN_MINOR 128
54 #define DRM_RENDER_NODE_MAX_MINOR (DRM_RENDER_NODE_MIN_MINOR + DRM_RENDER_NODE_MAX_NODES)
56 struct pipe_loader_drm_device
{
57 struct pipe_loader_device base
;
58 struct util_dl_library
*lib
;
62 #define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev)
64 static struct pipe_loader_ops pipe_loader_drm_ops
;
67 pipe_loader_drm_x_auth(int fd
)
69 #ifdef HAVE_PIPE_LOADER_XCB
70 /* Try authenticate with the X server to give us access to devices that X
72 xcb_connection_t
*xcb_conn
;
73 const xcb_setup_t
*xcb_setup
;
74 xcb_screen_iterator_t s
;
75 xcb_dri2_connect_cookie_t connect_cookie
;
76 xcb_dri2_connect_reply_t
*connect
;
78 xcb_dri2_authenticate_cookie_t authenticate_cookie
;
79 xcb_dri2_authenticate_reply_t
*authenticate
;
81 xcb_conn
= xcb_connect(NULL
, NULL
);
86 xcb_setup
= xcb_get_setup(xcb_conn
);
91 s
= xcb_setup_roots_iterator(xcb_setup
);
92 connect_cookie
= xcb_dri2_connect_unchecked(xcb_conn
, s
.data
->root
,
93 XCB_DRI2_DRIVER_TYPE_DRI
);
94 connect
= xcb_dri2_connect_reply(xcb_conn
, connect_cookie
, NULL
);
96 if (!connect
|| connect
->driver_name_length
97 + connect
->device_name_length
== 0) {
102 if (drmGetMagic(fd
, &magic
))
105 authenticate_cookie
= xcb_dri2_authenticate_unchecked(xcb_conn
,
108 authenticate
= xcb_dri2_authenticate_reply(xcb_conn
,
114 xcb_disconnect(xcb_conn
);
120 pipe_loader_drm_probe_fd(struct pipe_loader_device
**dev
, int fd
,
123 struct pipe_loader_drm_device
*ddev
= CALLOC_STRUCT(pipe_loader_drm_device
);
124 int vendor_id
, chip_id
;
129 if (loader_get_pci_id_for_fd(fd
, &vendor_id
, &chip_id
)) {
130 ddev
->base
.type
= PIPE_LOADER_DEVICE_PCI
;
131 ddev
->base
.u
.pci
.vendor_id
= vendor_id
;
132 ddev
->base
.u
.pci
.chip_id
= chip_id
;
134 ddev
->base
.type
= PIPE_LOADER_DEVICE_PLATFORM
;
136 ddev
->base
.ops
= &pipe_loader_drm_ops
;
140 pipe_loader_drm_x_auth(fd
);
142 ddev
->base
.driver_name
= loader_get_driver_for_fd(fd
, _LOADER_GALLIUM
);
143 if (!ddev
->base
.driver_name
)
155 open_drm_minor(int minor
)
158 snprintf(path
, sizeof(path
), DRM_DEV_NAME
, DRM_DIR_NAME
, minor
);
159 return open(path
, O_RDWR
, 0);
163 open_drm_render_node_minor(int minor
)
166 snprintf(path
, sizeof(path
), DRM_RENDER_NODE_DEV_NAME_FORMAT
, DRM_DIR_NAME
,
168 return open(path
, O_RDWR
, 0);
172 pipe_loader_drm_probe(struct pipe_loader_device
**devs
, int ndev
)
174 int i
, k
, fd
, num_render_node_devs
;
180 } render_node_devs
[DRM_RENDER_NODE_MAX_NODES
];
182 /* Look for render nodes first */
183 for (i
= DRM_RENDER_NODE_MIN_MINOR
, j
= 0;
184 i
<= DRM_RENDER_NODE_MAX_MINOR
; i
++) {
185 fd
= open_drm_render_node_minor(i
);
186 struct pipe_loader_device
*dev
;
190 if (!pipe_loader_drm_probe_fd(&dev
, fd
, false)) {
195 render_node_devs
[j
].vendor_id
= dev
->u
.pci
.vendor_id
;
196 render_node_devs
[j
].chip_id
= dev
->u
.pci
.chip_id
;
202 dev
->ops
->release(&dev
);
207 num_render_node_devs
= j
;
209 /* Next look for drm devices. */
210 for (i
= 0; i
< DRM_MAX_MINOR
; i
++) {
211 struct pipe_loader_device
*dev
;
212 boolean duplicate
= FALSE
;
213 fd
= open_drm_minor(i
);
217 if (!pipe_loader_drm_probe_fd(&dev
, fd
, true)) {
222 /* Check to make sure we aren't already accessing this device via
225 for (k
= 0; k
< num_render_node_devs
; k
++) {
226 if (dev
->u
.pci
.vendor_id
== render_node_devs
[k
].vendor_id
&&
227 dev
->u
.pci
.chip_id
== render_node_devs
[k
].chip_id
) {
229 dev
->ops
->release(&dev
);
241 dev
->ops
->release(&dev
);
251 pipe_loader_drm_release(struct pipe_loader_device
**dev
)
253 struct pipe_loader_drm_device
*ddev
= pipe_loader_drm_device(*dev
);
256 util_dl_close(ddev
->lib
);
259 FREE(ddev
->base
.driver_name
);
264 static const struct drm_conf_ret
*
265 pipe_loader_drm_configuration(struct pipe_loader_device
*dev
,
268 struct pipe_loader_drm_device
*ddev
= pipe_loader_drm_device(dev
);
269 const struct drm_driver_descriptor
*dd
;
274 dd
= (const struct drm_driver_descriptor
*)
275 util_dl_get_proc_address(ddev
->lib
, "driver_descriptor");
277 /* sanity check on the name */
278 if (!dd
|| strcmp(dd
->name
, ddev
->base
.driver_name
) != 0)
281 if (!dd
->configuration
)
284 return dd
->configuration(conf
);
287 static struct pipe_screen
*
288 pipe_loader_drm_create_screen(struct pipe_loader_device
*dev
,
289 const char *library_paths
)
291 struct pipe_loader_drm_device
*ddev
= pipe_loader_drm_device(dev
);
292 const struct drm_driver_descriptor
*dd
;
295 ddev
->lib
= pipe_loader_find_module(dev
, library_paths
);
299 dd
= (const struct drm_driver_descriptor
*)
300 util_dl_get_proc_address(ddev
->lib
, "driver_descriptor");
302 /* sanity check on the name */
303 if (!dd
|| strcmp(dd
->name
, ddev
->base
.driver_name
) != 0)
306 return dd
->create_screen(ddev
->fd
);
309 static struct pipe_loader_ops pipe_loader_drm_ops
= {
310 .create_screen
= pipe_loader_drm_create_screen
,
311 .configuration
= pipe_loader_drm_configuration
,
312 .release
= pipe_loader_drm_release