1 /**************************************************************************
3 * Copyright 2009, VMware, Inc.
5 * Copyright 2010 George Sapountzis <gsapountzis@gmail.com>
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
23 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
24 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
25 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
26 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 **************************************************************************/
37 #include <sys/types.h>
44 #include "pipe/p_compiler.h"
45 #include "pipe/p_format.h"
46 #include "util/u_inlines.h"
47 #include "util/u_format.h"
48 #include "util/u_math.h"
49 #include "util/u_memory.h"
50 #include "util/u_double_list.h"
52 #include "state_tracker/sw_winsys.h"
53 #include "state_tracker/drm_driver.h"
54 #include "kms_dri_sw_winsys.h"
57 #define DEBUG_PRINT(msg, ...) fprintf(stderr, msg, __VA_ARGS__)
59 #define DEBUG_PRINT(msg, ...)
63 struct kms_sw_displaytarget
65 enum pipe_format format;
75 struct list_head link;
80 struct sw_winsys base;
83 struct list_head bo_list;
86 static INLINE struct kms_sw_displaytarget *
87 kms_sw_displaytarget( struct sw_displaytarget *dt )
89 return (struct kms_sw_displaytarget *)dt;
92 static INLINE struct kms_sw_winsys *
93 kms_sw_winsys( struct sw_winsys *ws )
95 return (struct kms_sw_winsys *)ws;
100 kms_sw_is_displaytarget_format_supported( struct sw_winsys *ws,
102 enum pipe_format format )
104 /* TODO: check visuals or other sensible thing here */
108 static struct sw_displaytarget *
109 kms_sw_displaytarget_create(struct sw_winsys *ws,
111 enum pipe_format format,
112 unsigned width, unsigned height,
116 struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
117 struct kms_sw_displaytarget *kms_sw_dt;
118 struct drm_mode_create_dumb create_req;
119 struct drm_mode_destroy_dumb destroy_req;
122 kms_sw_dt = CALLOC_STRUCT(kms_sw_displaytarget);
126 kms_sw_dt->ref_count = 1;
128 kms_sw_dt->format = format;
129 kms_sw_dt->width = width;
130 kms_sw_dt->height = height;
132 memset(&create_req, 0, sizeof(create_req));
134 create_req.width = width;
135 create_req.height = height;
136 ret = drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_req);
140 kms_sw_dt->stride = create_req.pitch;
141 kms_sw_dt->size = create_req.size;
142 kms_sw_dt->handle = create_req.handle;
144 list_add(&kms_sw_dt->link, &kms_sw->bo_list);
146 DEBUG_PRINT("KMS-DEBUG: created buffer %u (size %u)\n", kms_sw_dt->handle, kms_sw_dt->size);
148 *stride = kms_sw_dt->stride;
149 return (struct sw_displaytarget *)kms_sw_dt;
152 memset(&destroy_req, 0, sizeof destroy_req);
153 destroy_req.handle = create_req.handle;
154 drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_req);
161 kms_sw_displaytarget_destroy(struct sw_winsys *ws,
162 struct sw_displaytarget *dt)
164 struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
165 struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
166 struct drm_mode_destroy_dumb destroy_req;
168 kms_sw_dt->ref_count --;
169 if (kms_sw_dt->ref_count > 0)
172 memset(&destroy_req, 0, sizeof destroy_req);
173 destroy_req.handle = kms_sw_dt->handle;
174 drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_req);
176 list_del(&kms_sw_dt->link);
178 DEBUG_PRINT("KMS-DEBUG: destroyed buffer %u\n", kms_sw_dt->handle);
184 kms_sw_displaytarget_map(struct sw_winsys *ws,
185 struct sw_displaytarget *dt,
188 struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
189 struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
190 struct drm_mode_map_dumb map_req;
193 memset(&map_req, 0, sizeof map_req);
194 map_req.handle = kms_sw_dt->handle;
195 ret = drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_req);
199 prot = (flags == PIPE_TRANSFER_READ) ? PROT_READ : (PROT_READ | PROT_WRITE);
200 kms_sw_dt->mapped = mmap(0, kms_sw_dt->size, prot, MAP_SHARED,
201 kms_sw->fd, map_req.offset);
203 if (kms_sw_dt->mapped == MAP_FAILED)
206 DEBUG_PRINT("KMS-DEBUG: mapped buffer %u (size %u) at %p\n",
207 kms_sw_dt->handle, kms_sw_dt->size, kms_sw_dt->mapped);
209 return kms_sw_dt->mapped;
212 static struct kms_sw_displaytarget *
213 kms_sw_displaytarget_add_from_prime(struct kms_sw_winsys *kms_sw, int fd)
215 uint32_t handle = -1;
216 struct kms_sw_displaytarget * kms_sw_dt;
219 ret = drmPrimeFDToHandle(kms_sw->fd, fd, &handle);
224 kms_sw_dt = CALLOC_STRUCT(kms_sw_displaytarget);
228 kms_sw_dt->ref_count = 1;
229 kms_sw_dt->handle = handle;
230 kms_sw_dt->size = lseek(fd, 0, SEEK_END);
232 if (kms_sw_dt->size == (off_t)-1) {
237 lseek(fd, 0, SEEK_SET);
239 list_add(&kms_sw_dt->link, &kms_sw->bo_list);
245 kms_sw_displaytarget_unmap(struct sw_winsys *ws,
246 struct sw_displaytarget *dt)
248 struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
250 DEBUG_PRINT("KMS-DEBUG: unmapped buffer %u (was %p)\n", kms_sw_dt->handle, kms_sw_dt->mapped);
252 munmap(kms_sw_dt->mapped, kms_sw_dt->size);
253 kms_sw_dt->mapped = NULL;
256 static struct sw_displaytarget *
257 kms_sw_displaytarget_from_handle(struct sw_winsys *ws,
258 const struct pipe_resource *templ,
259 struct winsys_handle *whandle,
262 struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
263 struct kms_sw_displaytarget *kms_sw_dt;
265 assert(whandle->type == DRM_API_HANDLE_TYPE_KMS ||
266 whandle->type == DRM_API_HANDLE_TYPE_FD);
268 switch(whandle->type) {
269 case DRM_API_HANDLE_TYPE_FD:
270 kms_sw_dt = kms_sw_displaytarget_add_from_prime(kms_sw, whandle->handle);
272 kms_sw_dt->ref_count++;
273 kms_sw_dt->width = templ->width0;
274 kms_sw_dt->height = templ->height0;
275 kms_sw_dt->stride = whandle->stride;
276 *stride = kms_sw_dt->stride;
278 return (struct sw_displaytarget *)kms_sw_dt;
279 case DRM_API_HANDLE_TYPE_KMS:
280 LIST_FOR_EACH_ENTRY(kms_sw_dt, &kms_sw->bo_list, link) {
281 if (kms_sw_dt->handle == whandle->handle) {
282 kms_sw_dt->ref_count++;
284 DEBUG_PRINT("KMS-DEBUG: imported buffer %u (size %u)\n", kms_sw_dt->handle, kms_sw_dt->size);
286 *stride = kms_sw_dt->stride;
287 return (struct sw_displaytarget *)kms_sw_dt;
300 kms_sw_displaytarget_get_handle(struct sw_winsys *winsys,
301 struct sw_displaytarget *dt,
302 struct winsys_handle *whandle)
304 struct kms_sw_winsys *kms_sw = kms_sw_winsys(winsys);
305 struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
307 switch(whandle->type) {
308 case DRM_API_HANDLE_TYPE_KMS:
309 whandle->handle = kms_sw_dt->handle;
310 whandle->stride = kms_sw_dt->stride;
312 case DRM_API_HANDLE_TYPE_FD:
313 if (!drmPrimeHandleToFD(kms_sw->fd, kms_sw_dt->handle,
314 DRM_CLOEXEC, (int*)&whandle->handle)) {
315 whandle->stride = kms_sw_dt->stride;
327 kms_sw_displaytarget_display(struct sw_winsys *ws,
328 struct sw_displaytarget *dt,
329 void *context_private,
330 struct pipe_box *box)
332 /* This function should not be called, instead the dri2 loader should
333 handle swap buffers internally.
340 kms_destroy_sw_winsys(struct sw_winsys *winsys)
346 kms_dri_create_winsys(int fd)
348 struct kms_sw_winsys *ws;
350 ws = CALLOC_STRUCT(kms_sw_winsys);
355 list_inithead(&ws->bo_list);
357 ws->base.destroy = kms_destroy_sw_winsys;
359 ws->base.is_displaytarget_format_supported = kms_sw_is_displaytarget_format_supported;
361 /* screen texture functions */
362 ws->base.displaytarget_create = kms_sw_displaytarget_create;
363 ws->base.displaytarget_destroy = kms_sw_displaytarget_destroy;
364 ws->base.displaytarget_from_handle = kms_sw_displaytarget_from_handle;
365 ws->base.displaytarget_get_handle = kms_sw_displaytarget_get_handle;
367 /* texture functions */
368 ws->base.displaytarget_map = kms_sw_displaytarget_map;
369 ws->base.displaytarget_unmap = kms_sw_displaytarget_unmap;
371 ws->base.displaytarget_display = kms_sw_displaytarget_display;
376 /* vim: set sw=3 ts=8 sts=3 expandtab: */