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Make the user_token 44-bit for TTMs, and have them occupy a unique file space 

starting at 0x00100000000. This will hopefully allow us to use
unmap_mapping_range(). Note that user-space will need
64-bit file offset support.
main
Thomas Hellstrom 2006-10-02 15:06:35 +02:00
parent a31046b873
commit eacedf41a6
3 changed files with 30 additions and 8 deletions
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1
configure.ac
View File

@ -30,6 +30,7 @@ AC_PROG_LIBTOOL
AC_PROG_CC
AC_HEADER_STDC
AC_SYS_LARGEFILE
pkgconfigdir=${libdir}/pkgconfig
AC_SUBST(pkgconfigdir)

13
libdrm/xf86drm.c
View File

@ -46,6 +46,9 @@
# include <sys/mman.h>
# endif
#else
# ifdef HAVE_CONFIG_H
# include <config.h>
# endif
# include <stdio.h>
# include <stdlib.h>
# include <unistd.h>
@ -2804,7 +2807,7 @@ int drmBOUnReference(int fd, drmBO *buf)
if (buf->mapVirtual && (buf->type != drm_bo_type_fake)) {
(void) drmUnmap(buf->mapVirtual, buf->start + buf->size);
(void) munmap(buf->mapVirtual, buf->start + buf->size);
buf->mapVirtual = NULL;
buf->virtual = NULL;
}
@ -2847,8 +2850,12 @@ int drmBOMap(int fd, drmBO *buf, unsigned mapFlags, unsigned mapHint,
if (!buf->virtual && buf->type != drm_bo_type_fake) {
drmAddress virtual;
ret = drmMap(fd, buf->mapHandle, buf->size + buf->start, &virtual);
if (ret)
virtual = mmap(0, buf->size + buf->start,
PROT_READ | PROT_WRITE, MAP_SHARED,
fd, buf->mapHandle);
if (virtual == MAP_FAILED)
ret = -errno;
if (ret)
return ret;
buf->mapVirtual = virtual;
buf->virtual = ((char *) virtual) + buf->start;

24
linux-core/drm_ttm.c
View File

@ -817,6 +817,11 @@ static void drm_ttm_object_remove(drm_device_t * dev, drm_ttm_object_t * object)
if (list->user_token)
drm_ht_remove_item(&dev->map_hash, &list->hash);
if (list->file_offset_node) {
drm_mm_put_block(&dev->offset_manager, list->file_offset_node);
list->file_offset_node = NULL;
}
map = list->map;
if (map) {
@ -901,15 +906,24 @@ int drm_ttm_object_create(drm_device_t * dev, unsigned long size,
map->size = ttm->num_pages * PAGE_SIZE;
map->handle = (void *)object;
if (drm_ht_just_insert_please(&dev->map_hash, &list->hash,
(unsigned long)map->handle,
32 - PAGE_SHIFT - 3, 0,
DRM_MAP_HASH_OFFSET >> PAGE_SHIFT)) {
list->file_offset_node = drm_mm_search_free(&dev->offset_manager,
ttm->num_pages,
0,0);
if (!list->file_offset_node) {
drm_ttm_object_remove(dev, object);
return -ENOMEM;
}
list->file_offset_node = drm_mm_get_block(list->file_offset_node,
ttm->num_pages,0);
list->hash.key = list->file_offset_node->start;
if (drm_ht_insert_item(&dev->map_hash, &list->hash)) {
drm_ttm_object_remove(dev, object);
return -ENOMEM;
}
list->user_token = list->hash.key << PAGE_SHIFT;
list->user_token = ((drm_u64_t) list->hash.key) << PAGE_SHIFT;
atomic_set(&object->usage, 1);
*ttm_object = object;