3 * Header for DRM modesetting interface.
5 * \author Jakob Bornecrantz <wallbraker@gmail.com>
7 * \par Acknowledgements:
8 * Feb 2007, Dave Airlie <airlied@linux.ie>
12 * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
13 * Copyright (c) 2007-2008 Dave Airlie <airlied@linux.ie>
14 * Copyright (c) 2007-2008 Jakob Bornecrantz <wallbraker@gmail.com>
16 * Permission is hereby granted, free of charge, to any person obtaining a
17 * copy of this software and associated documentation files (the "Software"),
18 * to deal in the Software without restriction, including without limitation
19 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
20 * and/or sell copies of the Software, and to permit persons to whom the
21 * Software is furnished to do so, subject to the following conditions:
23 * The above copyright notice and this permission notice shall be included in
24 * all copies or substantial portions of the Software.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
29 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
30 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
31 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
37 * TODO the types we are after are defined in diffrent headers on diffrent
38 * platforms find which headers to include to get uint32_t
41 #include <sys/ioctl.h>
44 #include "xf86drmMode.h"
52 #define U642VOID(x) ((void *)(unsigned long)(x))
53 #define VOID2U64(x) ((uint64_t)(unsigned long)(x))
59 void* drmAllocCpy(void *array, int count, int entry_size)
64 if (!count || !array || !entry_size)
67 if (!(r = drmMalloc(count*entry_size)))
70 for (i = 0; i < count; i++)
71 memcpy(r+(entry_size*i), array+(entry_size*i), entry_size);
77 * A couple of free functions.
80 void drmModeFreeModeInfo(drmModeModeInfoPtr ptr)
88 void drmModeFreeResources(drmModeResPtr ptr)
97 void drmModeFreeFB(drmModeFBPtr ptr)
102 /* we might add more frees later. */
106 void drmModeFreeCrtc(drmModeCrtcPtr ptr)
115 void drmModeFreeConnector(drmModeConnectorPtr ptr)
120 drmFree(ptr->encoders);
121 drmFree(ptr->prop_values);
128 void drmModeFreeEncoder(drmModeEncoderPtr ptr)
134 * ModeSetting functions.
137 drmModeResPtr drmModeGetResources(int fd)
139 struct drm_mode_card_res res, counts;
143 memset(&res, 0, sizeof(struct drm_mode_card_res));
144 if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
150 res.fb_id_ptr = VOID2U64(drmMalloc(res.count_fbs*sizeof(uint32_t)));
154 if (res.count_crtcs) {
155 res.crtc_id_ptr = VOID2U64(drmMalloc(res.count_crtcs*sizeof(uint32_t)));
156 if (!res.crtc_id_ptr)
159 if (res.count_connectors) {
160 res.connector_id_ptr = VOID2U64(drmMalloc(res.count_connectors*sizeof(uint32_t)));
161 if (!res.connector_id_ptr)
164 if (res.count_encoders) {
165 res.encoder_id_ptr = VOID2U64(drmMalloc(res.count_encoders*sizeof(uint32_t)));
166 if (!res.encoder_id_ptr)
170 if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
173 /* The number of available connectors and etc may have changed with a
174 * hotplug event in between the ioctls, in which case the field is
175 * silently ignored by the kernel.
177 if (counts.count_fbs < res.count_fbs ||
178 counts.count_crtcs < res.count_crtcs ||
179 counts.count_connectors < res.count_connectors ||
180 counts.count_encoders < res.count_encoders)
182 drmFree(U642VOID(res.fb_id_ptr));
183 drmFree(U642VOID(res.crtc_id_ptr));
184 drmFree(U642VOID(res.connector_id_ptr));
185 drmFree(U642VOID(res.encoder_id_ptr));
193 if (!(r = drmMalloc(sizeof(*r))))
196 r->min_width = res.min_width;
197 r->max_width = res.max_width;
198 r->min_height = res.min_height;
199 r->max_height = res.max_height;
200 r->count_fbs = res.count_fbs;
201 r->count_crtcs = res.count_crtcs;
202 r->count_connectors = res.count_connectors;
203 r->count_encoders = res.count_encoders;
205 r->fbs = drmAllocCpy(U642VOID(res.fb_id_ptr), res.count_fbs, sizeof(uint32_t));
206 r->crtcs = drmAllocCpy(U642VOID(res.crtc_id_ptr), res.count_crtcs, sizeof(uint32_t));
207 r->connectors = drmAllocCpy(U642VOID(res.connector_id_ptr), res.count_connectors, sizeof(uint32_t));
208 r->encoders = drmAllocCpy(U642VOID(res.encoder_id_ptr), res.count_encoders, sizeof(uint32_t));
209 if (!r->fbs || !r->crtcs || !r->connectors || !r->encoders) {
212 drmFree(r->connectors);
213 drmFree(r->encoders);
219 drmFree(U642VOID(res.fb_id_ptr));
220 drmFree(U642VOID(res.crtc_id_ptr));
221 drmFree(U642VOID(res.connector_id_ptr));
222 drmFree(U642VOID(res.encoder_id_ptr));
227 int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
228 uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
231 struct drm_mode_fb_cmd f;
239 f.handle = bo_handle;
241 if ((ret = drmIoctl(fd, DRM_IOCTL_MODE_ADDFB, &f)))
248 int drmModeRmFB(int fd, uint32_t bufferId)
250 return drmIoctl(fd, DRM_IOCTL_MODE_RMFB, &bufferId);
255 drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
257 struct drm_mode_fb_cmd info;
262 if (drmIoctl(fd, DRM_IOCTL_MODE_GETFB, &info))
265 if (!(r = drmMalloc(sizeof(*r))))
268 r->fb_id = info.fb_id;
269 r->width = info.width;
270 r->height = info.height;
271 r->pitch = info.pitch;
273 r->handle = info.handle;
274 r->depth = info.depth;
279 int drmModeDirtyFB(int fd, uint32_t bufferId,
280 drmModeClipPtr clips, uint32_t num_clips)
282 struct drm_mode_fb_dirty_cmd dirty = { 0 };
284 dirty.fb_id = bufferId;
285 dirty.clips_ptr = VOID2U64(clips);
286 dirty.num_clips = num_clips;
288 return drmIoctl(fd, DRM_IOCTL_MODE_DIRTYFB, &dirty);
296 drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
298 struct drm_mode_crtc crtc;
301 crtc.crtc_id = crtcId;
303 if (drmIoctl(fd, DRM_IOCTL_MODE_GETCRTC, &crtc))
310 if (!(r = drmMalloc(sizeof(*r))))
313 r->crtc_id = crtc.crtc_id;
316 r->mode_valid = crtc.mode_valid;
318 memcpy(&r->mode, &crtc.mode, sizeof(struct drm_mode_modeinfo));
319 r->buffer_id = crtc.fb_id;
320 r->gamma_size = crtc.gamma_size;
325 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
326 uint32_t x, uint32_t y, uint32_t *connectors, int count,
327 drmModeModeInfoPtr mode)
329 struct drm_mode_crtc crtc;
333 crtc.crtc_id = crtcId;
334 crtc.fb_id = bufferId;
335 crtc.set_connectors_ptr = VOID2U64(connectors);
336 crtc.count_connectors = count;
338 memcpy(&crtc.mode, mode, sizeof(struct drm_mode_modeinfo));
343 return drmIoctl(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
347 * Cursor manipulation
350 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height)
352 struct drm_mode_cursor arg;
354 arg.flags = DRM_MODE_CURSOR_BO;
355 arg.crtc_id = crtcId;
358 arg.handle = bo_handle;
360 return drmIoctl(fd, DRM_IOCTL_MODE_CURSOR, &arg);
363 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y)
365 struct drm_mode_cursor arg;
367 arg.flags = DRM_MODE_CURSOR_MOVE;
368 arg.crtc_id = crtcId;
372 return drmIoctl(fd, DRM_IOCTL_MODE_CURSOR, &arg);
378 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id)
380 struct drm_mode_get_encoder enc;
381 drmModeEncoderPtr r = NULL;
383 enc.encoder_id = encoder_id;
384 enc.encoder_type = 0;
385 enc.possible_crtcs = 0;
386 enc.possible_clones = 0;
388 if (drmIoctl(fd, DRM_IOCTL_MODE_GETENCODER, &enc))
391 if (!(r = drmMalloc(sizeof(*r))))
394 r->encoder_id = enc.encoder_id;
395 r->crtc_id = enc.crtc_id;
396 r->encoder_type = enc.encoder_type;
397 r->possible_crtcs = enc.possible_crtcs;
398 r->possible_clones = enc.possible_clones;
404 * Connector manipulation
407 drmModeConnectorPtr drmModeGetConnector(int fd, uint32_t connector_id)
409 struct drm_mode_get_connector conn;
410 drmModeConnectorPtr r = NULL;
412 conn.connector_id = connector_id;
413 conn.connector_type_id = 0;
414 conn.connector_type = 0;
415 conn.count_modes = 0;
417 conn.count_props = 0;
419 conn.prop_values_ptr = 0;
420 conn.count_encoders = 0;
421 conn.encoders_ptr = 0;
423 if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
426 if (conn.count_props) {
427 conn.props_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint32_t)));
428 conn.prop_values_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint64_t)));
431 if (conn.count_modes)
432 conn.modes_ptr = VOID2U64(drmMalloc(conn.count_modes*sizeof(struct drm_mode_modeinfo)));
434 if (conn.count_encoders)
435 conn.encoders_ptr = VOID2U64(drmMalloc(conn.count_encoders*sizeof(uint32_t)));
437 if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
440 if(!(r = drmMalloc(sizeof(*r)))) {
444 r->connector_id = conn.connector_id;
445 r->encoder_id = conn.encoder_id;
446 r->connection = conn.connection;
447 r->mmWidth = conn.mm_width;
448 r->mmHeight = conn.mm_height;
449 /* convert subpixel from kernel to userspace */
450 r->subpixel = conn.subpixel + 1;
451 r->count_modes = conn.count_modes;
452 /* TODO we should test if these alloc & cpy fails. */
453 r->count_props = conn.count_props;
454 r->props = drmAllocCpy(U642VOID(conn.props_ptr), conn.count_props, sizeof(uint32_t));
455 r->prop_values = drmAllocCpy(U642VOID(conn.prop_values_ptr), conn.count_props, sizeof(uint64_t));
456 r->modes = drmAllocCpy(U642VOID(conn.modes_ptr), conn.count_modes, sizeof(struct drm_mode_modeinfo));
457 r->count_encoders = conn.count_encoders;
458 r->encoders = drmAllocCpy(U642VOID(conn.encoders_ptr), conn.count_encoders, sizeof(uint32_t));
459 r->connector_type = conn.connector_type;
460 r->connector_type_id = conn.connector_type_id;
462 if (!r->props || !r->prop_values || !r->modes || !r->encoders)
466 drmFree(U642VOID(conn.prop_values_ptr));
467 drmFree(U642VOID(conn.props_ptr));
468 drmFree(U642VOID(conn.modes_ptr));
469 drmFree(U642VOID(conn.encoders_ptr));
474 int drmModeAttachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
476 struct drm_mode_mode_cmd res;
478 memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
479 res.connector_id = connector_id;
481 return drmIoctl(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
484 int drmModeDetachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
486 struct drm_mode_mode_cmd res;
488 memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
489 res.connector_id = connector_id;
491 return drmIoctl(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
495 drmModePropertyPtr drmModeGetProperty(int fd, uint32_t property_id)
497 struct drm_mode_get_property prop;
498 drmModePropertyPtr r;
500 prop.prop_id = property_id;
501 prop.count_enum_blobs = 0;
502 prop.count_values = 0;
504 prop.enum_blob_ptr = 0;
507 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop))
510 if (prop.count_values)
511 prop.values_ptr = VOID2U64(drmMalloc(prop.count_values * sizeof(uint64_t)));
513 if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_ENUM))
514 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(struct drm_mode_property_enum)));
516 if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_BLOB)) {
517 prop.values_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
518 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
521 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop)) {
526 if (!(r = drmMalloc(sizeof(*r))))
529 r->prop_id = prop.prop_id;
530 r->count_values = prop.count_values;
532 r->flags = prop.flags;
533 if (prop.count_values)
534 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_values, sizeof(uint64_t));
535 if (prop.flags & DRM_MODE_PROP_ENUM) {
536 r->count_enums = prop.count_enum_blobs;
537 r->enums = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(struct drm_mode_property_enum));
538 } else if (prop.flags & DRM_MODE_PROP_BLOB) {
539 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_enum_blobs, sizeof(uint32_t));
540 r->blob_ids = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(uint32_t));
541 r->count_blobs = prop.count_enum_blobs;
543 strncpy(r->name, prop.name, DRM_PROP_NAME_LEN);
544 r->name[DRM_PROP_NAME_LEN-1] = 0;
547 drmFree(U642VOID(prop.values_ptr));
548 drmFree(U642VOID(prop.enum_blob_ptr));
553 void drmModeFreeProperty(drmModePropertyPtr ptr)
558 drmFree(ptr->values);
563 drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id)
565 struct drm_mode_get_blob blob;
566 drmModePropertyBlobPtr r;
570 blob.blob_id = blob_id;
572 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob))
576 blob.data = VOID2U64(drmMalloc(blob.length));
578 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob)) {
583 if (!(r = drmMalloc(sizeof(*r))))
586 r->id = blob.blob_id;
587 r->length = blob.length;
588 r->data = drmAllocCpy(U642VOID(blob.data), 1, blob.length);
591 drmFree(U642VOID(blob.data));
595 void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)
604 int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
607 struct drm_mode_connector_set_property osp;
610 osp.connector_id = connector_id;
611 osp.prop_id = property_id;
614 if ((ret = drmIoctl(fd, DRM_IOCTL_MODE_SETPROPERTY, &osp)))
621 * checks if a modesetting capable driver has attached to the pci id
622 * returns 0 if modesetting supported.
623 * -EINVAL or invalid bus id
624 * -ENOSYS if no modesetting support
626 int drmCheckModesettingSupported(const char *busid)
629 char pci_dev_dir[1024];
630 int domain, bus, dev, func;
635 ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev, &func);
639 sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/drm",
640 domain, bus, dev, func);
642 sysdir = opendir(pci_dev_dir);
644 dent = readdir(sysdir);
646 if (!strncmp(dent->d_name, "controlD", 8)) {
651 dent = readdir(sysdir);
658 sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/",
659 domain, bus, dev, func);
661 sysdir = opendir(pci_dev_dir);
665 dent = readdir(sysdir);
667 if (!strncmp(dent->d_name, "drm:controlD", 12)) {
672 dent = readdir(sysdir);
683 int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
684 uint16_t *red, uint16_t *green, uint16_t *blue)
687 struct drm_mode_crtc_lut l;
691 l.red = VOID2U64(red);
692 l.green = VOID2U64(green);
693 l.blue = VOID2U64(blue);
695 if ((ret = drmIoctl(fd, DRM_IOCTL_MODE_GETGAMMA, &l)))
701 int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
702 uint16_t *red, uint16_t *green, uint16_t *blue)
705 struct drm_mode_crtc_lut l;
709 l.red = VOID2U64(red);
710 l.green = VOID2U64(green);
711 l.blue = VOID2U64(blue);
713 if ((ret = drmIoctl(fd, DRM_IOCTL_MODE_SETGAMMA, &l)))
719 int drmHandleEvent(int fd, drmEventContextPtr evctx)
724 struct drm_event_vblank *vblank;
726 /* The DRM read semantics guarantees that we always get only
727 * complete events. */
729 len = read(fd, buffer, sizeof buffer);
737 e = (struct drm_event *) &buffer[i];
739 case DRM_EVENT_VBLANK:
740 if (evctx->version < 1 ||
741 evctx->vblank_handler == NULL)
743 vblank = (struct drm_event_vblank *) e;
744 evctx->vblank_handler(fd,
748 U642VOID (vblank->user_data));
750 case DRM_EVENT_FLIP_COMPLETE:
751 if (evctx->version < 2 ||
752 evctx->page_flip_handler == NULL)
754 vblank = (struct drm_event_vblank *) e;
755 evctx->page_flip_handler(fd,
759 U642VOID (vblank->user_data));
770 int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
771 uint32_t flags, void *user_data)
773 struct drm_mode_crtc_page_flip flip;
776 flip.crtc_id = crtc_id;
777 flip.user_data = VOID2U64(user_data);
781 return drmIoctl(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);