2 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
26 * Rickard E. (Rik) Faith <faith@valinux.com>
27 * Gareth Hughes <gareth@valinux.com>
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 * Implementation of the ioctls for setup of DRM mappings and DMA buffers.
38 #include "dev/pci/pcireg.h"
40 #include "dev/drm/drmP.h"
42 /* Allocation of PCI memory resources (framebuffer, registers, etc.) for
43 * drm_get_resource_*. Note that they are not RF_ACTIVE, so there's no virtual
44 * address for accessing them. Cleaned up at unload.
46 static int drm_alloc_resource(struct drm_device *dev, int resource)
51 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
53 if (resource >= DRM_MAX_PCI_RESOURCE) {
54 DRM_ERROR("Resource %d too large\n", resource);
58 if (dev->pcir[resource] != NULL) {
63 rid = PCIR_BAR(resource);
64 res = bus_alloc_resource_any(dev->device, SYS_RES_MEMORY, &rid,
68 DRM_ERROR("Couldn't find resource 0x%x\n", resource);
72 if (dev->pcir[resource] == NULL) {
73 dev->pcirid[resource] = rid;
74 dev->pcir[resource] = res;
80 unsigned long drm_get_resource_start(struct drm_device *dev,
81 unsigned int resource)
83 if (drm_alloc_resource(dev, resource) != 0)
86 return rman_get_start(dev->pcir[resource]);
89 unsigned long drm_get_resource_len(struct drm_device *dev,
90 unsigned int resource)
92 if (drm_alloc_resource(dev, resource) != 0)
95 return rman_get_size(dev->pcir[resource]);
98 int drm_addmap(struct drm_device * dev, unsigned long offset,
100 enum drm_map_type type, enum drm_map_flags flags, drm_local_map_t **map_ptr)
102 drm_local_map_t *map;
104 /*drm_agp_mem_t *entry;
107 /* Only allow shared memory to be removable since we only keep enough
108 * book keeping information about shared memory to allow for removal
109 * when processes fork.
111 if ((flags & _DRM_REMOVABLE) && type != _DRM_SHM) {
112 DRM_ERROR("Requested removable map for non-DRM_SHM\n");
115 if ((offset & PAGE_MASK) || (size & PAGE_MASK)) {
116 DRM_ERROR("offset/size not page aligned: 0x%lx/0x%lx\n",
120 if (offset + size < offset) {
121 DRM_ERROR("offset and size wrap around: 0x%lx/0x%lx\n",
126 DRM_DEBUG("offset = 0x%08lx, size = 0x%08lx, type = %d\n", offset,
129 /* Check if this is just another version of a kernel-allocated map, and
130 * just hand that back if so.
132 if (type == _DRM_REGISTERS || type == _DRM_FRAME_BUFFER ||
134 TAILQ_FOREACH(map, &dev->maplist, link) {
135 if (map->type == type && (map->offset == offset ||
136 (map->type == _DRM_SHM &&
137 map->flags == _DRM_CONTAINS_LOCK))) {
139 DRM_DEBUG("Found kernel map %d\n", type);
146 /* Allocate a new map structure, fill it in, and do any type-specific
147 * initialization necessary.
149 map = malloc(sizeof(*map), DRM_MEM_MAPS, M_ZERO | M_NOWAIT);
155 map->offset = offset;
159 map->handle = (void *)((unsigned long)alloc_unr(dev->map_unrhdr) <<
160 DRM_MAP_HANDLE_SHIFT);
164 map->virtual = 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->virtual = malloc(map->size, DRM_MEM_MAPS, M_NOWAIT);
174 DRM_DEBUG("%lu %d %p\n",
175 map->size, drm_order(map->size), map->virtual);
177 free(map, DRM_MEM_MAPS);
181 map->offset = (unsigned long)map->virtual;
182 if (map->flags & _DRM_CONTAINS_LOCK) {
183 /* Prevent a 2nd X Server from creating a 2nd lock */
185 if (dev->lock.hw_lock != NULL) {
187 free(map->virtual, DRM_MEM_MAPS);
188 free(map, DRM_MEM_MAPS);
191 dev->lock.hw_lock = map->virtual; /* Pointer to lock */
197 /* In some cases (i810 driver), user space may have already
198 * added the AGP base itself, because dev->agp->base previously
199 * only got set during AGP enable. So, only add the base
200 * address if the map's offset isn't already within the
203 if (map->offset < dev->agp->base ||
204 map->offset > dev->agp->base +
205 dev->agp->info.ai_aperture_size - 1) {
206 map->offset += dev->agp->base;
208 map->mtrr = dev->agp->mtrr; /* for getmap */
209 /*for (entry = dev->agp->memory; entry; entry = entry->next) {
210 if ((map->offset >= entry->bound) &&
211 (map->offset + map->size <=
212 entry->bound + entry->pages * PAGE_SIZE)) {
218 free(map, DRM_MEM_MAPS);
223 case _DRM_SCATTER_GATHER:
225 free(map, DRM_MEM_MAPS);
229 map->virtual = (void *)(dev->sg->vaddr + offset);
230 map->offset = dev->sg->vaddr + offset;
232 case _DRM_CONSISTENT:
233 /* Unfortunately, we don't get any alignment specification from
234 * the caller, so we have to guess. drm_pci_alloc requires
235 * a power-of-two alignment, so try to align the bus address of
236 * the map to it size if possible, otherwise just assume
237 * PAGE_SIZE alignment.
240 if ((align & (align - 1)) != 0)
242 map->dmah = drm_pci_alloc(dev, map->size, align, 0xfffffffful);
243 if (map->dmah == NULL) {
244 free(map, DRM_MEM_MAPS);
248 map->virtual = map->dmah->vaddr;
249 map->offset = map->dmah->busaddr;
252 DRM_ERROR("Bad map type %d\n", map->type);
253 free(map, DRM_MEM_MAPS);
259 TAILQ_INSERT_TAIL(&dev->maplist, map, link);
262 /* Jumped to, with lock held, when a kernel map is found. */
264 DRM_DEBUG("Added map %d 0x%lx/0x%lx\n", map->type, map->offset,
272 int drm_addmap_ioctl(struct drm_device *dev, void *data,
273 struct drm_file *file_priv)
275 struct drm_map *request = data;
276 drm_local_map_t *map;
279 if (!(dev->flags & (FREAD|FWRITE)))
280 return EACCES; /* Require read/write */
282 if (!DRM_SUSER(DRM_CURPROC) && request->type != _DRM_AGP)
286 err = drm_addmap(dev, request->offset, request->size, request->type,
287 request->flags, &map);
292 request->offset = map->offset;
293 request->size = map->size;
294 request->type = map->type;
295 request->flags = map->flags;
296 request->mtrr = map->mtrr;
297 request->handle = (void *)map->handle;
302 void drm_rmmap(struct drm_device *dev, drm_local_map_t *map)
304 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
309 TAILQ_REMOVE(&dev->maplist, map, link);
313 if (map->bsr == NULL)
314 drm_ioremapfree(map);
316 case _DRM_FRAME_BUFFER:
318 int __unused retcode;
320 retcode = drm_mtrr_del(0, map->offset, map->size,
322 DRM_DEBUG("mtrr_del = %d\n", retcode);
326 free(map->virtual, DRM_MEM_MAPS);
329 case _DRM_SCATTER_GATHER:
331 case _DRM_CONSISTENT:
332 drm_pci_free(dev, map->dmah);
335 DRM_ERROR("Bad map type %d\n", map->type);
339 if (map->bsr != NULL) {
340 bus_release_resource(dev->device, SYS_RES_MEMORY, map->rid,
346 free_unr(dev->map_unrhdr, (unsigned long)map->handle >>
347 DRM_MAP_HANDLE_SHIFT);
350 free(map, DRM_MEM_MAPS);
353 /* Remove a map private from list and deallocate resources if the mapping
357 int drm_rmmap_ioctl(struct drm_device *dev, void *data,
358 struct drm_file *file_priv)
360 drm_local_map_t *map;
361 struct drm_map *request = data;
364 TAILQ_FOREACH(map, &dev->maplist, link) {
365 if (map->handle == request->handle &&
366 map->flags & _DRM_REMOVABLE)
370 /* No match found. */
384 static void drm_cleanup_buf_error(struct drm_device *dev,
385 drm_buf_entry_t *entry)
389 if (entry->seg_count) {
390 for (i = 0; i < entry->seg_count; i++) {
391 drm_pci_free(dev, entry->seglist[i]);
393 free(entry->seglist, DRM_MEM_SEGS);
395 entry->seg_count = 0;
398 if (entry->buf_count) {
399 for (i = 0; i < entry->buf_count; i++) {
400 free(entry->buflist[i].dev_private, DRM_MEM_BUFS);
402 free(entry->buflist, DRM_MEM_BUFS);
404 entry->buf_count = 0;
408 static int drm_do_addbufs_agp(struct drm_device *dev, struct drm_buf_desc *request)
410 drm_device_dma_t *dma = dev->dma;
411 drm_buf_entry_t *entry;
412 /*drm_agp_mem_t *agp_entry;
415 unsigned long offset;
416 unsigned long agp_offset;
425 drm_buf_t **temp_buflist;
427 count = request->count;
428 order = drm_order(request->size);
431 alignment = (request->flags & _DRM_PAGE_ALIGN)
432 ? round_page(size) : size;
433 page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
434 total = PAGE_SIZE << page_order;
437 agp_offset = dev->agp->base + request->agp_start;
439 DRM_DEBUG("count: %d\n", count);
440 DRM_DEBUG("order: %d\n", order);
441 DRM_DEBUG("size: %d\n", size);
442 DRM_DEBUG("agp_offset: 0x%lx\n", agp_offset);
443 DRM_DEBUG("alignment: %d\n", alignment);
444 DRM_DEBUG("page_order: %d\n", page_order);
445 DRM_DEBUG("total: %d\n", total);
447 /* Make sure buffers are located in AGP memory that we own */
448 /* Breaks MGA due to drm_alloc_agp not setting up entries for the
449 * memory. Safe to ignore for now because these ioctls are still
453 for (agp_entry = dev->agp->memory; agp_entry;
454 agp_entry = agp_entry->next) {
455 if ((agp_offset >= agp_entry->bound) &&
456 (agp_offset + total * count <=
457 agp_entry->bound + agp_entry->pages * PAGE_SIZE)) {
463 DRM_DEBUG("zone invalid\n");
467 entry = &dma->bufs[order];
469 entry->buflist = malloc(count * sizeof(*entry->buflist), DRM_MEM_BUFS,
471 if (!entry->buflist) {
475 entry->buf_size = size;
476 entry->page_order = page_order;
480 while (entry->buf_count < count) {
481 buf = &entry->buflist[entry->buf_count];
482 buf->idx = dma->buf_count + entry->buf_count;
483 buf->total = alignment;
487 buf->offset = (dma->byte_count + offset);
488 buf->bus_address = agp_offset + offset;
489 buf->address = (void *)(agp_offset + offset);
492 buf->file_priv = NULL;
494 buf->dev_priv_size = dev->driver->buf_priv_size;
495 buf->dev_private = malloc(buf->dev_priv_size, DRM_MEM_BUFS,
497 if (buf->dev_private == NULL) {
498 /* Set count correctly so we free the proper amount. */
499 entry->buf_count = count;
500 drm_cleanup_buf_error(dev, entry);
506 byte_count += PAGE_SIZE << page_order;
509 DRM_DEBUG("byte_count: %d\n", byte_count);
511 temp_buflist = realloc(dma->buflist,
512 (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist),
513 DRM_MEM_BUFS, M_NOWAIT);
514 if (temp_buflist == NULL) {
515 /* Free the entry because it isn't valid */
516 drm_cleanup_buf_error(dev, entry);
519 dma->buflist = temp_buflist;
521 for (i = 0; i < entry->buf_count; i++) {
522 dma->buflist[i + dma->buf_count] = &entry->buflist[i];
525 dma->buf_count += entry->buf_count;
526 dma->byte_count += byte_count;
528 DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count);
529 DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count);
531 request->count = entry->buf_count;
532 request->size = size;
534 dma->flags = _DRM_DMA_USE_AGP;
539 static int drm_do_addbufs_pci(struct drm_device *dev, struct drm_buf_desc *request)
541 drm_device_dma_t *dma = dev->dma;
547 drm_buf_entry_t *entry;
550 unsigned long offset;
554 unsigned long *temp_pagelist;
555 drm_buf_t **temp_buflist;
557 count = request->count;
558 order = drm_order(request->size);
561 DRM_DEBUG("count=%d, size=%d (%d), order=%d\n",
562 request->count, request->size, size, order);
564 alignment = (request->flags & _DRM_PAGE_ALIGN)
565 ? round_page(size) : size;
566 page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
567 total = PAGE_SIZE << page_order;
569 entry = &dma->bufs[order];
571 entry->buflist = malloc(count * sizeof(*entry->buflist), DRM_MEM_BUFS,
573 entry->seglist = malloc(count * sizeof(*entry->seglist), DRM_MEM_SEGS,
576 /* Keep the original pagelist until we know all the allocations
579 temp_pagelist = malloc((dma->page_count + (count << page_order)) *
580 sizeof(*dma->pagelist), DRM_MEM_PAGES, M_NOWAIT);
582 if (entry->buflist == NULL || entry->seglist == NULL ||
583 temp_pagelist == NULL) {
584 free(temp_pagelist, DRM_MEM_PAGES);
585 free(entry->seglist, DRM_MEM_SEGS);
586 free(entry->buflist, DRM_MEM_BUFS);
590 memcpy(temp_pagelist, dma->pagelist, dma->page_count *
591 sizeof(*dma->pagelist));
593 DRM_DEBUG("pagelist: %d entries\n",
594 dma->page_count + (count << page_order));
596 entry->buf_size = size;
597 entry->page_order = page_order;
601 while (entry->buf_count < count) {
602 DRM_SPINUNLOCK(&dev->dma_lock);
603 drm_dma_handle_t *dmah = drm_pci_alloc(dev, size, alignment,
605 DRM_SPINLOCK(&dev->dma_lock);
607 /* Set count correctly so we free the proper amount. */
608 entry->buf_count = count;
609 entry->seg_count = count;
610 drm_cleanup_buf_error(dev, entry);
611 free(temp_pagelist, DRM_MEM_PAGES);
615 entry->seglist[entry->seg_count++] = dmah;
616 for (i = 0; i < (1 << page_order); i++) {
617 DRM_DEBUG("page %d @ %p\n",
618 dma->page_count + page_count,
619 (char *)dmah->vaddr + PAGE_SIZE * i);
620 temp_pagelist[dma->page_count + page_count++] =
621 (long)dmah->vaddr + PAGE_SIZE * i;
624 offset + size <= total && entry->buf_count < count;
625 offset += alignment, ++entry->buf_count) {
626 buf = &entry->buflist[entry->buf_count];
627 buf->idx = dma->buf_count + entry->buf_count;
628 buf->total = alignment;
631 buf->offset = (dma->byte_count + byte_count + offset);
632 buf->address = ((char *)dmah->vaddr + offset);
633 buf->bus_address = dmah->busaddr + offset;
636 buf->file_priv = NULL;
638 buf->dev_priv_size = dev->driver->buf_priv_size;
639 buf->dev_private = malloc(buf->dev_priv_size,
640 DRM_MEM_BUFS, M_NOWAIT | M_ZERO);
641 if (buf->dev_private == NULL) {
642 /* Set count correctly so we free the proper amount. */
643 entry->buf_count = count;
644 entry->seg_count = count;
645 drm_cleanup_buf_error(dev, entry);
646 free(temp_pagelist, DRM_MEM_PAGES);
650 DRM_DEBUG("buffer %d @ %p\n",
651 entry->buf_count, buf->address);
653 byte_count += PAGE_SIZE << page_order;
656 temp_buflist = realloc(dma->buflist,
657 (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist),
658 DRM_MEM_BUFS, M_NOWAIT);
659 if (temp_buflist == NULL) {
660 /* Free the entry because it isn't valid */
661 drm_cleanup_buf_error(dev, entry);
662 free(temp_pagelist, DRM_MEM_PAGES);
665 dma->buflist = temp_buflist;
667 for (i = 0; i < entry->buf_count; i++) {
668 dma->buflist[i + dma->buf_count] = &entry->buflist[i];
671 /* No allocations failed, so now we can replace the original pagelist
674 free(dma->pagelist, DRM_MEM_PAGES);
675 dma->pagelist = temp_pagelist;
677 dma->buf_count += entry->buf_count;
678 dma->seg_count += entry->seg_count;
679 dma->page_count += entry->seg_count << page_order;
680 dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order);
682 request->count = entry->buf_count;
683 request->size = size;
689 static int drm_do_addbufs_sg(struct drm_device *dev, struct drm_buf_desc *request)
691 drm_device_dma_t *dma = dev->dma;
692 drm_buf_entry_t *entry;
694 unsigned long offset;
695 unsigned long agp_offset;
704 drm_buf_t **temp_buflist;
706 count = request->count;
707 order = drm_order(request->size);
710 alignment = (request->flags & _DRM_PAGE_ALIGN)
711 ? round_page(size) : size;
712 page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
713 total = PAGE_SIZE << page_order;
716 agp_offset = request->agp_start;
718 DRM_DEBUG("count: %d\n", count);
719 DRM_DEBUG("order: %d\n", order);
720 DRM_DEBUG("size: %d\n", size);
721 DRM_DEBUG("agp_offset: %ld\n", agp_offset);
722 DRM_DEBUG("alignment: %d\n", alignment);
723 DRM_DEBUG("page_order: %d\n", page_order);
724 DRM_DEBUG("total: %d\n", total);
726 entry = &dma->bufs[order];
728 entry->buflist = malloc(count * sizeof(*entry->buflist), DRM_MEM_BUFS,
730 if (entry->buflist == NULL)
733 entry->buf_size = size;
734 entry->page_order = page_order;
738 while (entry->buf_count < count) {
739 buf = &entry->buflist[entry->buf_count];
740 buf->idx = dma->buf_count + entry->buf_count;
741 buf->total = alignment;
745 buf->offset = (dma->byte_count + offset);
746 buf->bus_address = agp_offset + offset;
747 buf->address = (void *)(agp_offset + offset + dev->sg->vaddr);
750 buf->file_priv = NULL;
752 buf->dev_priv_size = dev->driver->buf_priv_size;
753 buf->dev_private = malloc(buf->dev_priv_size, DRM_MEM_BUFS,
755 if (buf->dev_private == NULL) {
756 /* Set count correctly so we free the proper amount. */
757 entry->buf_count = count;
758 drm_cleanup_buf_error(dev, entry);
762 DRM_DEBUG("buffer %d @ %p\n",
763 entry->buf_count, buf->address);
767 byte_count += PAGE_SIZE << page_order;
770 DRM_DEBUG("byte_count: %d\n", byte_count);
772 temp_buflist = realloc(dma->buflist,
773 (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist),
774 DRM_MEM_BUFS, M_NOWAIT);
775 if (temp_buflist == NULL) {
776 /* Free the entry because it isn't valid */
777 drm_cleanup_buf_error(dev, entry);
780 dma->buflist = temp_buflist;
782 for (i = 0; i < entry->buf_count; i++) {
783 dma->buflist[i + dma->buf_count] = &entry->buflist[i];
786 dma->buf_count += entry->buf_count;
787 dma->byte_count += byte_count;
789 DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count);
790 DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count);
792 request->count = entry->buf_count;
793 request->size = size;
795 dma->flags = _DRM_DMA_USE_SG;
800 int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc *request)
804 if (request->count < 0 || request->count > 4096)
807 order = drm_order(request->size);
808 if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER)
811 DRM_SPINLOCK(&dev->dma_lock);
813 /* No more allocations after first buffer-using ioctl. */
814 if (dev->buf_use != 0) {
815 DRM_SPINUNLOCK(&dev->dma_lock);
818 /* No more than one allocation per order */
819 if (dev->dma->bufs[order].buf_count != 0) {
820 DRM_SPINUNLOCK(&dev->dma_lock);
824 ret = drm_do_addbufs_agp(dev, request);
826 DRM_SPINUNLOCK(&dev->dma_lock);
831 int drm_addbufs_sg(struct drm_device *dev, struct drm_buf_desc *request)
835 if (!DRM_SUSER(DRM_CURPROC))
838 if (request->count < 0 || request->count > 4096)
841 order = drm_order(request->size);
842 if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER)
845 DRM_SPINLOCK(&dev->dma_lock);
847 /* No more allocations after first buffer-using ioctl. */
848 if (dev->buf_use != 0) {
849 DRM_SPINUNLOCK(&dev->dma_lock);
852 /* No more than one allocation per order */
853 if (dev->dma->bufs[order].buf_count != 0) {
854 DRM_SPINUNLOCK(&dev->dma_lock);
858 ret = drm_do_addbufs_sg(dev, request);
860 DRM_SPINUNLOCK(&dev->dma_lock);
865 int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc *request)
869 if (!DRM_SUSER(DRM_CURPROC))
872 if (request->count < 0 || request->count > 4096)
875 order = drm_order(request->size);
876 if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER)
879 DRM_SPINLOCK(&dev->dma_lock);
881 /* No more allocations after first buffer-using ioctl. */
882 if (dev->buf_use != 0) {
883 DRM_SPINUNLOCK(&dev->dma_lock);
886 /* No more than one allocation per order */
887 if (dev->dma->bufs[order].buf_count != 0) {
888 DRM_SPINUNLOCK(&dev->dma_lock);
892 ret = drm_do_addbufs_pci(dev, request);
894 DRM_SPINUNLOCK(&dev->dma_lock);
899 int drm_addbufs(struct drm_device *dev, void *data, struct drm_file *file_priv)
901 struct drm_buf_desc *request = data;
904 if (request->flags & _DRM_AGP_BUFFER)
905 err = drm_addbufs_agp(dev, request);
906 else if (request->flags & _DRM_SG_BUFFER)
907 err = drm_addbufs_sg(dev, request);
909 err = drm_addbufs_pci(dev, request);
914 int drm_infobufs(struct drm_device *dev, void *data, struct drm_file *file_priv)
916 drm_device_dma_t *dma = dev->dma;
917 struct drm_buf_info *request = data;
922 DRM_SPINLOCK(&dev->dma_lock);
923 ++dev->buf_use; /* Can't allocate more after this call */
924 DRM_SPINUNLOCK(&dev->dma_lock);
926 for (i = 0, count = 0; i < DRM_MAX_ORDER + 1; i++) {
927 if (dma->bufs[i].buf_count)
931 DRM_DEBUG("count = %d\n", count);
933 if (request->count >= count) {
934 for (i = 0, count = 0; i < DRM_MAX_ORDER + 1; i++) {
935 if (dma->bufs[i].buf_count) {
936 struct drm_buf_desc from;
938 memset(&from, 0, sizeof(from));
939 from.count = dma->bufs[i].buf_count;
940 from.size = dma->bufs[i].buf_size;
941 from.low_mark = dma->bufs[i].freelist.low_mark;
942 from.high_mark = dma->bufs[i].freelist.high_mark;
944 if (DRM_COPY_TO_USER(&request->list[count], &from,
945 sizeof(struct drm_buf_desc)) != 0) {
950 DRM_DEBUG("%d %d %d %d %d\n",
951 i, dma->bufs[i].buf_count,
952 dma->bufs[i].buf_size,
953 dma->bufs[i].freelist.low_mark,
954 dma->bufs[i].freelist.high_mark);
959 request->count = count;
964 int drm_markbufs(struct drm_device *dev, void *data, struct drm_file *file_priv)
966 drm_device_dma_t *dma = dev->dma;
967 struct drm_buf_desc *request = data;
970 DRM_DEBUG("%d, %d, %d\n",
971 request->size, request->low_mark, request->high_mark);
974 order = drm_order(request->size);
975 if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ||
976 request->low_mark < 0 || request->high_mark < 0) {
980 DRM_SPINLOCK(&dev->dma_lock);
981 if (request->low_mark > dma->bufs[order].buf_count ||
982 request->high_mark > dma->bufs[order].buf_count) {
983 DRM_SPINUNLOCK(&dev->dma_lock);
987 dma->bufs[order].freelist.low_mark = request->low_mark;
988 dma->bufs[order].freelist.high_mark = request->high_mark;
989 DRM_SPINUNLOCK(&dev->dma_lock);
994 int drm_freebufs(struct drm_device *dev, void *data, struct drm_file *file_priv)
996 drm_device_dma_t *dma = dev->dma;
997 struct drm_buf_free *request = data;
1003 DRM_DEBUG("%d\n", request->count);
1005 DRM_SPINLOCK(&dev->dma_lock);
1006 for (i = 0; i < request->count; i++) {
1007 if (DRM_COPY_FROM_USER(&idx, &request->list[i], sizeof(idx))) {
1011 if (idx < 0 || idx >= dma->buf_count) {
1012 DRM_ERROR("Index %d (of %d max)\n",
1013 idx, dma->buf_count - 1);
1017 buf = dma->buflist[idx];
1018 if (buf->file_priv != file_priv) {
1019 DRM_ERROR("Process %d freeing buffer not owned\n",
1024 drm_free_buffer(dev, buf);
1026 DRM_SPINUNLOCK(&dev->dma_lock);
1031 int drm_mapbufs(struct drm_device *dev, void *data, struct drm_file *file_priv)
1033 drm_device_dma_t *dma = dev->dma;
1036 vm_offset_t address;
1037 struct vmspace *vms;
1041 struct drm_buf_map *request = data;
1044 vms = DRM_CURPROC->td_proc->p_vmspace;
1046 DRM_SPINLOCK(&dev->dma_lock);
1047 dev->buf_use++; /* Can't allocate more after this call */
1048 DRM_SPINUNLOCK(&dev->dma_lock);
1050 if (request->count < dma->buf_count)
1053 if ((drm_core_has_AGP(dev) && (dma->flags & _DRM_DMA_USE_AGP)) ||
1054 (drm_core_check_feature(dev, DRIVER_SG) &&
1055 (dma->flags & _DRM_DMA_USE_SG))) {
1056 drm_local_map_t *map = dev->agp_buffer_map;
1062 size = round_page(map->size);
1063 foff = (unsigned long)map->handle;
1065 size = round_page(dma->byte_count),
1069 vaddr = round_page((vm_offset_t)vms->vm_daddr + MAXDSIZ);
1070 retcode = vm_mmap(&vms->vm_map, &vaddr, size, VM_PROT_READ |
1071 VM_PROT_WRITE, VM_PROT_ALL, MAP_SHARED | MAP_NOSYNC, OBJT_DEVICE,
1072 dev->devnode, foff);
1076 request->virtual = (void *)vaddr;
1078 for (i = 0; i < dma->buf_count; i++) {
1079 if (DRM_COPY_TO_USER(&request->list[i].idx,
1080 &dma->buflist[i]->idx, sizeof(request->list[0].idx))) {
1084 if (DRM_COPY_TO_USER(&request->list[i].total,
1085 &dma->buflist[i]->total, sizeof(request->list[0].total))) {
1089 if (DRM_COPY_TO_USER(&request->list[i].used, &zero,
1094 address = vaddr + dma->buflist[i]->offset; /* *** */
1095 if (DRM_COPY_TO_USER(&request->list[i].address, &address,
1103 request->count = dma->buf_count;
1105 DRM_DEBUG("%d buffers, retcode = %d\n", request->count, retcode);
1111 * Compute order. Can be made faster.
1113 int drm_order(unsigned long size)
1120 order = flsl(size) - 1;
1121 if (size & ~(1ul << order))