1 /* drm_bufs.h -- Generic buffer template -*- linux-c -*-
2 * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
5 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
6 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice (including the next
17 * paragraph) shall be included in all copies or substantial portions of the
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
26 * OTHER DEALINGS IN THE SOFTWARE.
29 * Rickard E. (Rik) Faith <faith@valinux.com>
30 * Gareth Hughes <gareth@valinux.com>
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include "dev/pci/pcireg.h"
39 #include "dev/drm/drmP.h"
42 * Compute order. Can be made faster.
44 int drm_order(unsigned long size)
49 for ( order = 0, tmp = size ; tmp >>= 1 ; ++order );
51 if ( size & ~(1 << order) )
57 /* Allocation of PCI memory resources (framebuffer, registers, etc.) for
58 * drm_get_resource_*. Note that they are not RF_ACTIVE, so there's no virtual
59 * address for accessing them. Cleaned up at unload.
61 static int drm_alloc_resource(drm_device_t *dev, int resource)
63 if (resource >= DRM_MAX_PCI_RESOURCE) {
64 DRM_ERROR("Resource %d too large\n", resource);
69 if (dev->pcir[resource] != NULL) {
74 dev->pcirid[resource] = PCIR_BAR(resource);
75 dev->pcir[resource] = bus_alloc_resource_any(dev->device,
76 SYS_RES_MEMORY, &dev->pcirid[resource], RF_SHAREABLE);
79 if (dev->pcir[resource] == NULL) {
80 DRM_ERROR("Couldn't find resource 0x%x\n", resource);
87 unsigned long drm_get_resource_start(drm_device_t *dev, unsigned int resource)
89 if (drm_alloc_resource(dev, resource) != 0)
92 return rman_get_start(dev->pcir[resource]);
95 unsigned long drm_get_resource_len(drm_device_t *dev, unsigned int resource)
97 if (drm_alloc_resource(dev, resource) != 0)
100 return rman_get_size(dev->pcir[resource]);
103 int drm_addmap(drm_device_t * dev, unsigned long offset, unsigned long size,
104 drm_map_type_t type, drm_map_flags_t flags, drm_local_map_t **map_ptr)
106 drm_local_map_t *map;
108 /*drm_agp_mem_t *entry;
111 /* Only allow shared memory to be removable since we only keep enough
112 * book keeping information about shared memory to allow for removal
113 * when processes fork.
115 if ((flags & _DRM_REMOVABLE) && type != _DRM_SHM) {
116 DRM_ERROR("Requested removable map for non-DRM_SHM\n");
119 if ((offset & PAGE_MASK) || (size & PAGE_MASK)) {
120 DRM_ERROR("offset/size not page aligned: 0x%lx/0x%lx\n",
124 if (offset + size < offset) {
125 DRM_ERROR("offset and size wrap around: 0x%lx/0x%lx\n",
130 DRM_DEBUG("offset = 0x%08lx, size = 0x%08lx, type = %d\n", offset,
133 /* Check if this is just another version of a kernel-allocated map, and
134 * just hand that back if so.
136 if (type == _DRM_REGISTERS || type == _DRM_FRAME_BUFFER ||
138 TAILQ_FOREACH(map, &dev->maplist, link) {
139 if (map->type == type && (map->offset == offset ||
140 (map->type == _DRM_SHM &&
141 map->flags == _DRM_CONTAINS_LOCK))) {
143 DRM_DEBUG("Found kernel map %d\n", type);
150 /* Allocate a new map structure, fill it in, and do any type-specific
151 * initialization necessary.
153 map = malloc(sizeof(*map), M_DRM, M_ZERO | M_NOWAIT);
155 return DRM_ERR(ENOMEM);
157 map->offset = offset;
162 switch ( map->type ) {
164 map->handle = drm_ioremap(dev, map);
165 if (!(map->flags & _DRM_WRITE_COMBINING))
168 case _DRM_FRAME_BUFFER:
169 if (drm_mtrr_add(map->offset, map->size, DRM_MTRR_WC) == 0)
173 map->handle = malloc(map->size, M_DRM, M_NOWAIT);
174 DRM_DEBUG( "%lu %d %p\n",
175 map->size, drm_order(map->size), map->handle );
176 if ( !map->handle ) {
178 return DRM_ERR(ENOMEM);
180 map->offset = (unsigned long)map->handle;
181 if ( map->flags & _DRM_CONTAINS_LOCK ) {
182 /* Prevent a 2nd X Server from creating a 2nd lock */
184 if (dev->lock.hw_lock != NULL) {
186 free(map->handle, M_DRM);
188 return DRM_ERR(EBUSY);
190 dev->lock.hw_lock = map->handle; /* Pointer to lock */
196 map->offset += dev->agp->base;
197 map->mtrr = dev->agp->mtrr; /* for getmap */
198 /*for (entry = dev->agp->memory; entry; entry = entry->next) {
199 if ((map->offset >= entry->bound) &&
200 (map->offset + map->size <=
201 entry->bound + entry->pages * PAGE_SIZE)) {
208 return DRM_ERR(EACCES);
211 case _DRM_SCATTER_GATHER:
214 return DRM_ERR(EINVAL);
216 map->offset = map->offset + dev->sg->handle;
218 case _DRM_CONSISTENT:
219 /* Unfortunately, we don't get any alignment specification from
220 * the caller, so we have to guess. drm_pci_alloc requires
221 * a power-of-two alignment, so try to align the bus address of
222 * the map to it size if possible, otherwise just assume
223 * PAGE_SIZE alignment.
226 if ((align & (align - 1)) != 0)
228 map->dmah = drm_pci_alloc(dev, map->size, align, 0xfffffffful);
229 if (map->dmah == NULL) {
231 return DRM_ERR(ENOMEM);
233 map->handle = map->dmah->vaddr;
234 map->offset = map->dmah->busaddr;
237 DRM_ERROR("Bad map type %d\n", map->type);
239 return DRM_ERR(EINVAL);
243 TAILQ_INSERT_TAIL(&dev->maplist, map, link);
246 /* Jumped to, with lock held, when a kernel map is found. */
248 DRM_DEBUG("Added map %d 0x%lx/0x%lx\n", map->type, map->offset,
256 int drm_addmap_ioctl(DRM_IOCTL_ARGS)
259 drm_local_map_t *map;
263 if (!(dev->flags & (FREAD|FWRITE)))
264 return DRM_ERR(EACCES); /* Require read/write */
266 DRM_COPY_FROM_USER_IOCTL(request, (drm_map_t *)data, sizeof(drm_map_t));
268 if (!DRM_SUSER(p) && request.type != _DRM_AGP)
269 return DRM_ERR(EACCES);
272 err = drm_addmap(dev, request.offset, request.size, request.type,
273 request.flags, &map);
278 request.offset = map->offset;
279 request.size = map->size;
280 request.type = map->type;
281 request.flags = map->flags;
282 request.mtrr = map->mtrr;
283 request.handle = map->handle;
285 if (request.type != _DRM_SHM) {
286 request.handle = (void *)request.offset;
288 DRM_COPY_TO_USER_IOCTL((drm_map_t *)data, request, sizeof(drm_map_t));
293 void drm_rmmap(drm_device_t *dev, drm_local_map_t *map)
295 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
297 TAILQ_REMOVE(&dev->maplist, map, link);
301 if (map->bsr == NULL)
302 drm_ioremapfree(map);
304 case _DRM_FRAME_BUFFER:
306 int __unused retcode;
308 retcode = drm_mtrr_del(0, map->offset, map->size,
310 DRM_DEBUG("mtrr_del = %d\n", retcode);
314 free(map->handle, M_DRM);
317 case _DRM_SCATTER_GATHER:
319 case _DRM_CONSISTENT:
320 drm_pci_free(dev, map->dmah);
324 if (map->bsr != NULL) {
325 bus_release_resource(dev->device, SYS_RES_MEMORY, map->rid,
332 /* Remove a map private from list and deallocate resources if the mapping
336 int drm_rmmap_ioctl(DRM_IOCTL_ARGS)
339 drm_local_map_t *map;
342 DRM_COPY_FROM_USER_IOCTL( request, (drm_map_t *)data, sizeof(request) );
345 TAILQ_FOREACH(map, &dev->maplist, link) {
346 if (map->handle == request.handle &&
347 map->flags & _DRM_REMOVABLE)
351 /* No match found. */
354 return DRM_ERR(EINVAL);
365 static void drm_cleanup_buf_error(drm_device_t *dev, drm_buf_entry_t *entry)
369 if (entry->seg_count) {
370 for (i = 0; i < entry->seg_count; i++) {
371 drm_pci_free(dev, entry->seglist[i]);
373 free(entry->seglist, M_DRM);
375 entry->seg_count = 0;
378 if (entry->buf_count) {
379 for (i = 0; i < entry->buf_count; i++) {
380 free(entry->buflist[i].dev_private, M_DRM);
382 free(entry->buflist, M_DRM);
384 entry->buf_count = 0;
388 static int drm_do_addbufs_agp(drm_device_t *dev, drm_buf_desc_t *request)
390 drm_device_dma_t *dma = dev->dma;
391 drm_buf_entry_t *entry;
392 /*drm_agp_mem_t *agp_entry;
395 unsigned long offset;
396 unsigned long agp_offset;
405 drm_buf_t **temp_buflist;
407 count = request->count;
408 order = drm_order(request->size);
411 alignment = (request->flags & _DRM_PAGE_ALIGN)
412 ? round_page(size) : size;
413 page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
414 total = PAGE_SIZE << page_order;
417 agp_offset = dev->agp->base + request->agp_start;
419 DRM_DEBUG( "count: %d\n", count );
420 DRM_DEBUG( "order: %d\n", order );
421 DRM_DEBUG( "size: %d\n", size );
422 DRM_DEBUG( "agp_offset: 0x%lx\n", agp_offset );
423 DRM_DEBUG( "alignment: %d\n", alignment );
424 DRM_DEBUG( "page_order: %d\n", page_order );
425 DRM_DEBUG( "total: %d\n", total );
427 /* Make sure buffers are located in AGP memory that we own */
428 /* Breaks MGA due to drm_alloc_agp not setting up entries for the
429 * memory. Safe to ignore for now because these ioctls are still
433 for (agp_entry = dev->agp->memory; agp_entry;
434 agp_entry = agp_entry->next) {
435 if ((agp_offset >= agp_entry->bound) &&
436 (agp_offset + total * count <=
437 agp_entry->bound + agp_entry->pages * PAGE_SIZE)) {
443 DRM_DEBUG("zone invalid\n");
444 return DRM_ERR(EINVAL);
447 entry = &dma->bufs[order];
449 entry->buflist = malloc(count * sizeof(*entry->buflist), M_DRM,
451 if ( !entry->buflist ) {
452 return DRM_ERR(ENOMEM);
455 entry->buf_size = size;
456 entry->page_order = page_order;
460 while ( entry->buf_count < count ) {
461 buf = &entry->buflist[entry->buf_count];
462 buf->idx = dma->buf_count + entry->buf_count;
463 buf->total = alignment;
467 buf->offset = (dma->byte_count + offset);
468 buf->bus_address = agp_offset + offset;
469 buf->address = (void *)(agp_offset + offset);
474 buf->dev_priv_size = dev->driver.buf_priv_size;
475 buf->dev_private = malloc(buf->dev_priv_size, M_DRM,
477 if (buf->dev_private == NULL) {
478 /* Set count correctly so we free the proper amount. */
479 entry->buf_count = count;
480 drm_cleanup_buf_error(dev, entry);
481 return DRM_ERR(ENOMEM);
486 byte_count += PAGE_SIZE << page_order;
489 DRM_DEBUG( "byte_count: %d\n", byte_count );
491 temp_buflist = realloc(dma->buflist,
492 (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist), M_DRM,
494 if (temp_buflist == NULL) {
495 /* Free the entry because it isn't valid */
496 drm_cleanup_buf_error(dev, entry);
497 return DRM_ERR(ENOMEM);
499 dma->buflist = temp_buflist;
501 for ( i = 0 ; i < entry->buf_count ; i++ ) {
502 dma->buflist[i + dma->buf_count] = &entry->buflist[i];
505 dma->buf_count += entry->buf_count;
506 dma->byte_count += byte_count;
508 DRM_DEBUG( "dma->buf_count : %d\n", dma->buf_count );
509 DRM_DEBUG( "entry->buf_count : %d\n", entry->buf_count );
511 request->count = entry->buf_count;
512 request->size = size;
514 dma->flags = _DRM_DMA_USE_AGP;
519 static int drm_do_addbufs_pci(drm_device_t *dev, drm_buf_desc_t *request)
521 drm_device_dma_t *dma = dev->dma;
527 drm_buf_entry_t *entry;
530 unsigned long offset;
534 unsigned long *temp_pagelist;
535 drm_buf_t **temp_buflist;
537 count = request->count;
538 order = drm_order(request->size);
541 DRM_DEBUG( "count=%d, size=%d (%d), order=%d\n",
542 request->count, request->size, size, order );
544 alignment = (request->flags & _DRM_PAGE_ALIGN)
545 ? round_page(size) : size;
546 page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
547 total = PAGE_SIZE << page_order;
549 entry = &dma->bufs[order];
551 entry->buflist = malloc(count * sizeof(*entry->buflist), M_DRM,
553 entry->seglist = malloc(count * sizeof(*entry->seglist), M_DRM,
556 /* Keep the original pagelist until we know all the allocations
559 temp_pagelist = malloc((dma->page_count + (count << page_order)) *
560 sizeof(*dma->pagelist), M_DRM, M_NOWAIT);
562 if (entry->buflist == NULL || entry->seglist == NULL ||
563 temp_pagelist == NULL) {
564 free(entry->buflist, M_DRM);
565 free(entry->seglist, M_DRM);
566 return DRM_ERR(ENOMEM);
569 memcpy(temp_pagelist, dma->pagelist, dma->page_count *
570 sizeof(*dma->pagelist));
572 DRM_DEBUG( "pagelist: %d entries\n",
573 dma->page_count + (count << page_order) );
575 entry->buf_size = size;
576 entry->page_order = page_order;
580 while ( entry->buf_count < count ) {
581 drm_dma_handle_t *dmah = drm_pci_alloc(dev, size, alignment,
584 /* Set count correctly so we free the proper amount. */
585 entry->buf_count = count;
586 entry->seg_count = count;
587 drm_cleanup_buf_error(dev, entry);
588 free(temp_pagelist, M_DRM);
589 return DRM_ERR(ENOMEM);
592 entry->seglist[entry->seg_count++] = dmah;
593 for ( i = 0 ; i < (1 << page_order) ; i++ ) {
594 DRM_DEBUG( "page %d @ %p\n",
595 dma->page_count + page_count,
596 (char *)dmah->vaddr + PAGE_SIZE * i );
597 temp_pagelist[dma->page_count + page_count++] =
598 (long)dmah->vaddr + PAGE_SIZE * i;
601 offset + size <= total && entry->buf_count < count ;
602 offset += alignment, ++entry->buf_count ) {
603 buf = &entry->buflist[entry->buf_count];
604 buf->idx = dma->buf_count + entry->buf_count;
605 buf->total = alignment;
608 buf->offset = (dma->byte_count + byte_count + offset);
609 buf->address = ((char *)dmah->vaddr + offset);
610 buf->bus_address = dmah->busaddr + offset;
615 buf->dev_priv_size = dev->driver.buf_priv_size;
616 buf->dev_private = malloc(buf->dev_priv_size, M_DRM,
618 if (buf->dev_private == NULL) {
619 /* Set count correctly so we free the proper amount. */
620 entry->buf_count = count;
621 entry->seg_count = count;
622 drm_cleanup_buf_error(dev, entry);
623 free(temp_pagelist, M_DRM);
624 return DRM_ERR(ENOMEM);
627 DRM_DEBUG( "buffer %d @ %p\n",
628 entry->buf_count, buf->address );
630 byte_count += PAGE_SIZE << page_order;
633 temp_buflist = realloc(dma->buflist,
634 (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist), M_DRM,
636 if (temp_buflist == NULL) {
637 /* Free the entry because it isn't valid */
638 drm_cleanup_buf_error(dev, entry);
639 free(temp_pagelist, M_DRM);
640 return DRM_ERR(ENOMEM);
642 dma->buflist = temp_buflist;
644 for ( i = 0 ; i < entry->buf_count ; i++ ) {
645 dma->buflist[i + dma->buf_count] = &entry->buflist[i];
648 /* No allocations failed, so now we can replace the orginal pagelist
651 free(dma->pagelist, M_DRM);
652 dma->pagelist = temp_pagelist;
654 dma->buf_count += entry->buf_count;
655 dma->seg_count += entry->seg_count;
656 dma->page_count += entry->seg_count << page_order;
657 dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order);
659 request->count = entry->buf_count;
660 request->size = size;
666 static int drm_do_addbufs_sg(drm_device_t *dev, drm_buf_desc_t *request)
668 drm_device_dma_t *dma = dev->dma;
669 drm_buf_entry_t *entry;
671 unsigned long offset;
672 unsigned long agp_offset;
681 drm_buf_t **temp_buflist;
683 count = request->count;
684 order = drm_order(request->size);
687 alignment = (request->flags & _DRM_PAGE_ALIGN)
688 ? round_page(size) : size;
689 page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
690 total = PAGE_SIZE << page_order;
693 agp_offset = request->agp_start;
695 DRM_DEBUG( "count: %d\n", count );
696 DRM_DEBUG( "order: %d\n", order );
697 DRM_DEBUG( "size: %d\n", size );
698 DRM_DEBUG( "agp_offset: %ld\n", agp_offset );
699 DRM_DEBUG( "alignment: %d\n", alignment );
700 DRM_DEBUG( "page_order: %d\n", page_order );
701 DRM_DEBUG( "total: %d\n", total );
703 entry = &dma->bufs[order];
705 entry->buflist = malloc(count * sizeof(*entry->buflist), M_DRM,
707 if (entry->buflist == NULL)
708 return DRM_ERR(ENOMEM);
710 entry->buf_size = size;
711 entry->page_order = page_order;
715 while ( entry->buf_count < count ) {
716 buf = &entry->buflist[entry->buf_count];
717 buf->idx = dma->buf_count + entry->buf_count;
718 buf->total = alignment;
722 buf->offset = (dma->byte_count + offset);
723 buf->bus_address = agp_offset + offset;
724 buf->address = (void *)(agp_offset + offset + dev->sg->handle);
729 buf->dev_priv_size = dev->driver.buf_priv_size;
730 buf->dev_private = malloc(buf->dev_priv_size, M_DRM,
732 if (buf->dev_private == NULL) {
733 /* Set count correctly so we free the proper amount. */
734 entry->buf_count = count;
735 drm_cleanup_buf_error(dev, entry);
736 return DRM_ERR(ENOMEM);
739 DRM_DEBUG( "buffer %d @ %p\n",
740 entry->buf_count, buf->address );
744 byte_count += PAGE_SIZE << page_order;
747 DRM_DEBUG( "byte_count: %d\n", byte_count );
749 temp_buflist = realloc(dma->buflist,
750 (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist), M_DRM,
752 if (temp_buflist == NULL) {
753 /* Free the entry because it isn't valid */
754 drm_cleanup_buf_error(dev, entry);
755 return DRM_ERR(ENOMEM);
757 dma->buflist = temp_buflist;
759 for ( i = 0 ; i < entry->buf_count ; i++ ) {
760 dma->buflist[i + dma->buf_count] = &entry->buflist[i];
763 dma->buf_count += entry->buf_count;
764 dma->byte_count += byte_count;
766 DRM_DEBUG( "dma->buf_count : %d\n", dma->buf_count );
767 DRM_DEBUG( "entry->buf_count : %d\n", entry->buf_count );
769 request->count = entry->buf_count;
770 request->size = size;
772 dma->flags = _DRM_DMA_USE_SG;
777 int drm_addbufs_agp(drm_device_t *dev, drm_buf_desc_t *request)
781 DRM_SPINLOCK(&dev->dma_lock);
783 if (request->count < 0 || request->count > 4096)
784 return DRM_ERR(EINVAL);
786 order = drm_order(request->size);
787 if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER)
788 return DRM_ERR(EINVAL);
790 /* No more allocations after first buffer-using ioctl. */
791 if (dev->buf_use != 0) {
792 DRM_SPINUNLOCK(&dev->dma_lock);
793 return DRM_ERR(EBUSY);
795 /* No more than one allocation per order */
796 if (dev->dma->bufs[order].buf_count != 0) {
797 DRM_SPINUNLOCK(&dev->dma_lock);
798 return DRM_ERR(ENOMEM);
801 ret = drm_do_addbufs_agp(dev, request);
803 DRM_SPINUNLOCK(&dev->dma_lock);
808 int drm_addbufs_sg(drm_device_t *dev, drm_buf_desc_t *request)
812 DRM_SPINLOCK(&dev->dma_lock);
814 if (!DRM_SUSER(DRM_CURPROC))
815 return DRM_ERR(EACCES);
817 if (request->count < 0 || request->count > 4096)
818 return DRM_ERR(EINVAL);
820 order = drm_order(request->size);
821 if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER)
822 return DRM_ERR(EINVAL);
824 /* No more allocations after first buffer-using ioctl. */
825 if (dev->buf_use != 0) {
826 DRM_SPINUNLOCK(&dev->dma_lock);
827 return DRM_ERR(EBUSY);
829 /* No more than one allocation per order */
830 if (dev->dma->bufs[order].buf_count != 0) {
831 DRM_SPINUNLOCK(&dev->dma_lock);
832 return DRM_ERR(ENOMEM);
835 ret = drm_do_addbufs_sg(dev, request);
837 DRM_SPINUNLOCK(&dev->dma_lock);
842 int drm_addbufs_pci(drm_device_t *dev, drm_buf_desc_t *request)
846 DRM_SPINLOCK(&dev->dma_lock);
848 if (!DRM_SUSER(DRM_CURPROC))
849 return DRM_ERR(EACCES);
851 if (request->count < 0 || request->count > 4096)
852 return DRM_ERR(EINVAL);
854 order = drm_order(request->size);
855 if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER)
856 return DRM_ERR(EINVAL);
858 /* No more allocations after first buffer-using ioctl. */
859 if (dev->buf_use != 0) {
860 DRM_SPINUNLOCK(&dev->dma_lock);
861 return DRM_ERR(EBUSY);
863 /* No more than one allocation per order */
864 if (dev->dma->bufs[order].buf_count != 0) {
865 DRM_SPINUNLOCK(&dev->dma_lock);
866 return DRM_ERR(ENOMEM);
869 ret = drm_do_addbufs_pci(dev, request);
871 DRM_SPINUNLOCK(&dev->dma_lock);
876 int drm_addbufs_ioctl(DRM_IOCTL_ARGS)
879 drm_buf_desc_t request;
882 DRM_COPY_FROM_USER_IOCTL(request, (drm_buf_desc_t *)data,
885 if (request.flags & _DRM_AGP_BUFFER)
886 err = drm_addbufs_agp(dev, &request);
887 else if (request.flags & _DRM_SG_BUFFER)
888 err = drm_addbufs_sg(dev, &request);
890 err = drm_addbufs_pci(dev, &request);
892 DRM_COPY_TO_USER_IOCTL((drm_buf_desc_t *)data, request,
898 int drm_infobufs(DRM_IOCTL_ARGS)
901 drm_device_dma_t *dma = dev->dma;
902 drm_buf_info_t request;
907 DRM_COPY_FROM_USER_IOCTL( request, (drm_buf_info_t *)data, sizeof(request) );
909 DRM_SPINLOCK(&dev->dma_lock);
910 ++dev->buf_use; /* Can't allocate more after this call */
911 DRM_SPINUNLOCK(&dev->dma_lock);
913 for ( i = 0, count = 0 ; i < DRM_MAX_ORDER + 1 ; i++ ) {
914 if ( dma->bufs[i].buf_count ) ++count;
917 DRM_DEBUG( "count = %d\n", count );
919 if ( request.count >= count ) {
920 for ( i = 0, count = 0 ; i < DRM_MAX_ORDER + 1 ; i++ ) {
921 if ( dma->bufs[i].buf_count ) {
924 from.count = dma->bufs[i].buf_count;
925 from.size = dma->bufs[i].buf_size;
926 from.low_mark = dma->bufs[i].freelist.low_mark;
927 from.high_mark = dma->bufs[i].freelist.high_mark;
929 if (DRM_COPY_TO_USER(&request.list[count], &from,
930 sizeof(drm_buf_desc_t)) != 0) {
931 retcode = DRM_ERR(EFAULT);
935 DRM_DEBUG( "%d %d %d %d %d\n",
937 dma->bufs[i].buf_count,
938 dma->bufs[i].buf_size,
939 dma->bufs[i].freelist.low_mark,
940 dma->bufs[i].freelist.high_mark );
945 request.count = count;
947 DRM_COPY_TO_USER_IOCTL( (drm_buf_info_t *)data, request, sizeof(request) );
952 int drm_markbufs(DRM_IOCTL_ARGS)
955 drm_device_dma_t *dma = dev->dma;
956 drm_buf_desc_t request;
959 DRM_COPY_FROM_USER_IOCTL( request, (drm_buf_desc_t *)data, sizeof(request) );
961 DRM_DEBUG( "%d, %d, %d\n",
962 request.size, request.low_mark, request.high_mark );
965 order = drm_order(request.size);
966 if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ||
967 request.low_mark < 0 || request.high_mark < 0) {
968 return DRM_ERR(EINVAL);
971 DRM_SPINLOCK(&dev->dma_lock);
972 if (request.low_mark > dma->bufs[order].buf_count ||
973 request.high_mark > dma->bufs[order].buf_count) {
974 return DRM_ERR(EINVAL);
977 dma->bufs[order].freelist.low_mark = request.low_mark;
978 dma->bufs[order].freelist.high_mark = request.high_mark;
979 DRM_SPINUNLOCK(&dev->dma_lock);
984 int drm_freebufs(DRM_IOCTL_ARGS)
987 drm_device_dma_t *dma = dev->dma;
988 drm_buf_free_t request;
994 DRM_COPY_FROM_USER_IOCTL( request, (drm_buf_free_t *)data, sizeof(request) );
996 DRM_DEBUG( "%d\n", request.count );
998 DRM_SPINLOCK(&dev->dma_lock);
999 for ( i = 0 ; i < request.count ; i++ ) {
1000 if (DRM_COPY_FROM_USER(&idx, &request.list[i], sizeof(idx))) {
1001 retcode = DRM_ERR(EFAULT);
1004 if ( idx < 0 || idx >= dma->buf_count ) {
1005 DRM_ERROR( "Index %d (of %d max)\n",
1006 idx, dma->buf_count - 1 );
1007 retcode = DRM_ERR(EINVAL);
1010 buf = dma->buflist[idx];
1011 if ( buf->filp != filp ) {
1012 DRM_ERROR("Process %d freeing buffer not owned\n",
1014 retcode = DRM_ERR(EINVAL);
1017 drm_free_buffer(dev, buf);
1019 DRM_SPINUNLOCK(&dev->dma_lock);
1024 int drm_mapbufs(DRM_IOCTL_ARGS)
1027 drm_device_dma_t *dma = dev->dma;
1030 vm_offset_t address;
1031 struct vmspace *vms;
1036 #elif defined(__NetBSD__) || defined(__OpenBSD__)
1041 #endif /* __NetBSD__ || __OpenBSD__ */
1043 drm_buf_map_t request;
1046 DRM_COPY_FROM_USER_IOCTL( request, (drm_buf_map_t *)data, sizeof(request) );
1048 #if defined(__NetBSD__) || defined(__OpenBSD__)
1049 if (!vfinddev(kdev, VCHR, &vn))
1050 return 0; /* FIXME: Shouldn't this be EINVAL or something? */
1051 #endif /* __NetBSD__ || __OpenBSD */
1053 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
1054 vms = p->td_proc->p_vmspace;
1059 DRM_SPINLOCK(&dev->dma_lock);
1060 dev->buf_use++; /* Can't allocate more after this call */
1061 DRM_SPINUNLOCK(&dev->dma_lock);
1063 if (request.count < dma->buf_count)
1066 if ((dev->driver.use_agp && (dma->flags & _DRM_DMA_USE_AGP)) ||
1067 (dev->driver.use_sg && (dma->flags & _DRM_DMA_USE_SG))) {
1068 drm_local_map_t *map = dev->agp_buffer_map;
1074 size = round_page(map->size);
1077 size = round_page(dma->byte_count),
1082 vaddr = round_page((vm_offset_t)vms->vm_daddr + MAXDSIZ);
1083 #if __FreeBSD_version >= 600023
1084 retcode = vm_mmap(&vms->vm_map, &vaddr, size, PROT_READ | PROT_WRITE,
1085 VM_PROT_ALL, MAP_SHARED, OBJT_DEVICE, kdev, foff );
1087 retcode = vm_mmap(&vms->vm_map, &vaddr, size, PROT_READ | PROT_WRITE,
1088 VM_PROT_ALL, MAP_SHARED, SLIST_FIRST(&kdev->si_hlist), foff );
1090 #elif defined(__NetBSD__) || defined(__OpenBSD__)
1091 vaddr = round_page((vaddr_t)vms->vm_daddr + MAXDSIZ);
1092 retcode = uvm_mmap(&vms->vm_map, &vaddr, size,
1093 UVM_PROT_READ | UVM_PROT_WRITE, UVM_PROT_ALL, MAP_SHARED,
1094 &vn->v_uobj, foff, p->p_rlimit[RLIMIT_MEMLOCK].rlim_cur);
1095 #endif /* __NetBSD__ || __OpenBSD */
1099 request.virtual = (void *)vaddr;
1101 for ( i = 0 ; i < dma->buf_count ; i++ ) {
1102 if (DRM_COPY_TO_USER(&request.list[i].idx,
1103 &dma->buflist[i]->idx, sizeof(request.list[0].idx))) {
1107 if (DRM_COPY_TO_USER(&request.list[i].total,
1108 &dma->buflist[i]->total, sizeof(request.list[0].total))) {
1112 if (DRM_COPY_TO_USER(&request.list[i].used, &zero,
1117 address = vaddr + dma->buflist[i]->offset; /* *** */
1118 if (DRM_COPY_TO_USER(&request.list[i].address, &address,
1126 request.count = dma->buf_count;
1128 DRM_DEBUG( "%d buffers, retcode = %d\n", request.count, retcode );
1130 DRM_COPY_TO_USER_IOCTL((drm_buf_map_t *)data, request, sizeof(request));
1132 return DRM_ERR(retcode);