static int
drmAdjustListNodes(drmBOList * list)
{
drmBONode *node;
drmMMListHead *l;
int ret = 0;
while (list->numCurrent < list->numTarget) {
node = (drmBONode *) malloc(sizeof(*node));
if (!node) {
ret = -ENOMEM;
break;
}
list->numCurrent++;
DRMLISTADD(&node->head, &list->free);
}
while (list->numCurrent > list->numTarget) {
l = list->free.next;
if (l == &list->free)
break;
DRMLISTDEL(l);
node = DRMLISTENTRY(drmBONode, l, head);
free(node);
list->numCurrent--;
}
return ret;
}
static int
drmBOResetList(drmBOList * list)
{
drmMMListHead *l;
int ret;
ret = drmAdjustListNodes(list);
if (ret)
return ret;
l = list->list.next;
while (l != &list->list) {
DRMLISTDEL(l);
DRMLISTADD(l, &list->free);
list->numOnList--;
l = list->list.next;
}
return drmAdjustListNodes(list);
}
int drm_tegra_bo_create(struct drm_tegra *drm, uint32_t flags, uint32_t size,
struct drm_tegra_bo **bop)
{
struct drm_tegra_gem_create args;
struct drm_tegra_bo *bo;
int err;
if (!drm || size == 0 || !bop)
return -EINVAL;
bo = calloc(1, sizeof(*bo));
if (!bo)
return -ENOMEM;
DRMINITLISTHEAD(&bo->list);
atomic_set(&bo->ref, 1);
bo->flags = flags;
bo->size = size;
bo->drm = drm;
memset(&args, 0, sizeof(args));
args.flags = flags;
args.size = size;
err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_CREATE, &args,
sizeof(args));
if (err < 0) {
free(bo);
return -errno;
}
DRMLISTADD(&bo->list, &drm->bo_list);
bo->handle = args.handle;
*bop = bo;
return 0;
}
int drm_tegra_bo_open(struct drm_tegra *drm, uint32_t name,
struct drm_tegra_bo **bop)
{
struct drm_gem_open args;
struct drm_tegra_bo *bo;
int err;
if (!drm || !name || !bop)
return -EINVAL;
bo = calloc(1, sizeof(*bo));
if (!bo)
return -ENOMEM;
DRMINITLISTHEAD(&bo->list);
atomic_set(&bo->ref, 1);
bo->flags = 0;
bo->drm = drm;
memset(&args, 0, sizeof(args));
args.name = name;
err = drmIoctl(drm->fd, DRM_IOCTL_GEM_OPEN, &args);
if (err < 0) {
free(bo);
return -errno;
}
DRMLISTADD(&bo->list, &drm->bo_list);
bo->handle = args.handle;
bo->size = args.size;
*bop = bo;
return 0;
}
