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/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,
114 const void *front_private,
117 struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
118 struct kms_sw_displaytarget *kms_sw_dt;
119 struct drm_mode_create_dumb create_req;
120 struct drm_mode_destroy_dumb destroy_req;
123 kms_sw_dt = CALLOC_STRUCT(kms_sw_displaytarget);
127 kms_sw_dt->ref_count = 1;
129 kms_sw_dt->format = format;
130 kms_sw_dt->width = width;
131 kms_sw_dt->height = height;
133 memset(&create_req, 0, sizeof(create_req));
135 create_req.width = width;
136 create_req.height = height;
137 ret = drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_req);
141 kms_sw_dt->stride = create_req.pitch;
142 kms_sw_dt->size = create_req.size;
143 kms_sw_dt->handle = create_req.handle;
145 list_add(&kms_sw_dt->link, &kms_sw->bo_list);
147 DEBUG_PRINT("KMS-DEBUG: created buffer %u (size %u)\n", kms_sw_dt->handle, kms_sw_dt->size);
149 *stride = kms_sw_dt->stride;
150 return (struct sw_displaytarget *)kms_sw_dt;
153 memset(&destroy_req, 0, sizeof destroy_req);
154 destroy_req.handle = create_req.handle;
155 drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_req);
162 kms_sw_displaytarget_destroy(struct sw_winsys *ws,
163 struct sw_displaytarget *dt)
165 struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
166 struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
167 struct drm_mode_destroy_dumb destroy_req;
169 kms_sw_dt->ref_count --;
170 if (kms_sw_dt->ref_count > 0)
173 memset(&destroy_req, 0, sizeof destroy_req);
174 destroy_req.handle = kms_sw_dt->handle;
175 drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_req);
177 list_del(&kms_sw_dt->link);
179 DEBUG_PRINT("KMS-DEBUG: destroyed buffer %u\n", kms_sw_dt->handle);
185 kms_sw_displaytarget_map(struct sw_winsys *ws,
186 struct sw_displaytarget *dt,
189 struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
190 struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
191 struct drm_mode_map_dumb map_req;
194 memset(&map_req, 0, sizeof map_req);
195 map_req.handle = kms_sw_dt->handle;
196 ret = drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_req);
200 prot = (flags == PIPE_TRANSFER_READ) ? PROT_READ : (PROT_READ | PROT_WRITE);
201 kms_sw_dt->mapped = mmap(0, kms_sw_dt->size, prot, MAP_SHARED,
202 kms_sw->fd, map_req.offset);
204 if (kms_sw_dt->mapped == MAP_FAILED)
207 DEBUG_PRINT("KMS-DEBUG: mapped buffer %u (size %u) at %p\n",
208 kms_sw_dt->handle, kms_sw_dt->size, kms_sw_dt->mapped);
210 return kms_sw_dt->mapped;
213 static struct kms_sw_displaytarget *
214 kms_sw_displaytarget_add_from_prime(struct kms_sw_winsys *kms_sw, int fd)
216 uint32_t handle = -1;
217 struct kms_sw_displaytarget * kms_sw_dt;
220 ret = drmPrimeFDToHandle(kms_sw->fd, fd, &handle);
225 kms_sw_dt = CALLOC_STRUCT(kms_sw_displaytarget);
229 kms_sw_dt->ref_count = 1;
230 kms_sw_dt->handle = handle;
231 kms_sw_dt->size = lseek(fd, 0, SEEK_END);
233 if (kms_sw_dt->size == (off_t)-1) {
238 lseek(fd, 0, SEEK_SET);
240 list_add(&kms_sw_dt->link, &kms_sw->bo_list);
246 kms_sw_displaytarget_unmap(struct sw_winsys *ws,
247 struct sw_displaytarget *dt)
249 struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
251 DEBUG_PRINT("KMS-DEBUG: unmapped buffer %u (was %p)\n", kms_sw_dt->handle, kms_sw_dt->mapped);
253 munmap(kms_sw_dt->mapped, kms_sw_dt->size);
254 kms_sw_dt->mapped = NULL;
257 static struct sw_displaytarget *
258 kms_sw_displaytarget_from_handle(struct sw_winsys *ws,
259 const struct pipe_resource *templ,
260 struct winsys_handle *whandle,
263 struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
264 struct kms_sw_displaytarget *kms_sw_dt;
266 assert(whandle->type == DRM_API_HANDLE_TYPE_KMS ||
267 whandle->type == DRM_API_HANDLE_TYPE_FD);
269 if (whandle->offset != 0) {
270 DEBUG_PRINT("KMS-DEBUG: attempt to import unsupported winsys offset %d\n",
275 switch(whandle->type) {
276 case DRM_API_HANDLE_TYPE_FD:
277 kms_sw_dt = kms_sw_displaytarget_add_from_prime(kms_sw, whandle->handle);
279 kms_sw_dt->width = templ->width0;
280 kms_sw_dt->height = templ->height0;
281 kms_sw_dt->stride = whandle->stride;
282 *stride = kms_sw_dt->stride;
284 return (struct sw_displaytarget *)kms_sw_dt;
285 case DRM_API_HANDLE_TYPE_KMS:
286 LIST_FOR_EACH_ENTRY(kms_sw_dt, &kms_sw->bo_list, link) {
287 if (kms_sw_dt->handle == whandle->handle) {
288 kms_sw_dt->ref_count++;
290 DEBUG_PRINT("KMS-DEBUG: imported buffer %u (size %u)\n", kms_sw_dt->handle, kms_sw_dt->size);
292 *stride = kms_sw_dt->stride;
293 return (struct sw_displaytarget *)kms_sw_dt;
306 kms_sw_displaytarget_get_handle(struct sw_winsys *winsys,
307 struct sw_displaytarget *dt,
308 struct winsys_handle *whandle)
310 struct kms_sw_winsys *kms_sw = kms_sw_winsys(winsys);
311 struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
313 switch(whandle->type) {
314 case DRM_API_HANDLE_TYPE_KMS:
315 whandle->handle = kms_sw_dt->handle;
316 whandle->stride = kms_sw_dt->stride;
319 case DRM_API_HANDLE_TYPE_FD:
320 if (!drmPrimeHandleToFD(kms_sw->fd, kms_sw_dt->handle,
321 DRM_CLOEXEC, (int*)&whandle->handle)) {
322 whandle->stride = kms_sw_dt->stride;
336 kms_sw_displaytarget_display(struct sw_winsys *ws,
337 struct sw_displaytarget *dt,
338 void *context_private,
339 struct pipe_box *box)
341 /* This function should not be called, instead the dri2 loader should
342 handle swap buffers internally.
349 kms_destroy_sw_winsys(struct sw_winsys *winsys)
355 kms_dri_create_winsys(int fd)
357 struct kms_sw_winsys *ws;
359 ws = CALLOC_STRUCT(kms_sw_winsys);
364 list_inithead(&ws->bo_list);
366 ws->base.destroy = kms_destroy_sw_winsys;
368 ws->base.is_displaytarget_format_supported = kms_sw_is_displaytarget_format_supported;
370 /* screen texture functions */
371 ws->base.displaytarget_create = kms_sw_displaytarget_create;
372 ws->base.displaytarget_destroy = kms_sw_displaytarget_destroy;
373 ws->base.displaytarget_from_handle = kms_sw_displaytarget_from_handle;
374 ws->base.displaytarget_get_handle = kms_sw_displaytarget_get_handle;
376 /* texture functions */
377 ws->base.displaytarget_map = kms_sw_displaytarget_map;
378 ws->base.displaytarget_unmap = kms_sw_displaytarget_unmap;
380 ws->base.displaytarget_display = kms_sw_displaytarget_display;
385 /* vim: set sw=3 ts=8 sts=3 expandtab: */