diff options
Diffstat (limited to 'linux-core/drm_compat.c')
-rw-r--r-- | linux-core/drm_compat.c | 206 |
1 files changed, 190 insertions, 16 deletions
diff --git a/linux-core/drm_compat.c b/linux-core/drm_compat.c index 9ac5658c..ae44e500 100644 --- a/linux-core/drm_compat.c +++ b/linux-core/drm_compat.c @@ -196,21 +196,24 @@ static int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr, return ret; } -static struct page *drm_bo_vm_fault(struct vm_area_struct *vma, + +static struct page *drm_bo_vm_fault(struct vm_area_struct *vma, struct fault_data *data) { unsigned long address = data->address; - drm_buffer_object_t *bo = (drm_buffer_object_t *) vma->vm_private_data; + struct drm_buffer_object *bo = (struct drm_buffer_object *) vma->vm_private_data; unsigned long page_offset; struct page *page = NULL; - drm_ttm_t *ttm; - drm_device_t *dev; + struct drm_ttm *ttm; + struct drm_device *dev; unsigned long pfn; int err; unsigned long bus_base; unsigned long bus_offset; unsigned long bus_size; + dev = bo->dev; + while(drm_bo_read_lock(&dev->bm.bm_lock)); mutex_lock(&bo->mutex); @@ -261,7 +264,7 @@ static struct page *drm_bo_vm_fault(struct vm_area_struct *vma, page_offset = (address - vma->vm_start) >> PAGE_SHIFT; if (bus_size) { - drm_mem_type_manager_t *man = &dev->bm.man[bo->mem.mem_type]; + struct drm_mem_type_manager *man = &dev->bm.man[bo->mem.mem_type]; pfn = ((bus_base + bus_offset) >> PAGE_SHIFT) + page_offset; vma->vm_page_prot = drm_io_prot(man->drm_bus_maptype, vma); @@ -288,6 +291,7 @@ static struct page *drm_bo_vm_fault(struct vm_area_struct *vma, data->type = VM_FAULT_OOM; out_unlock: mutex_unlock(&bo->mutex); + drm_bo_read_unlock(&dev->bm.bm_lock); return NULL; } @@ -350,11 +354,11 @@ struct page *drm_bo_vm_nopage(struct vm_area_struct *vma, unsigned long address, int *type) { - drm_buffer_object_t *bo = (drm_buffer_object_t *) vma->vm_private_data; + struct drm_buffer_object *bo = (struct drm_buffer_object *) vma->vm_private_data; unsigned long page_offset; struct page *page; - drm_ttm_t *ttm; - drm_device_t *dev; + struct drm_ttm *ttm; + struct drm_device *dev; mutex_lock(&bo->mutex); @@ -394,7 +398,7 @@ out_unlock: int drm_bo_map_bound(struct vm_area_struct *vma) { - drm_buffer_object_t *bo = (drm_buffer_object_t *)vma->vm_private_data; + struct drm_buffer_object *bo = (struct drm_buffer_object *)vma->vm_private_data; int ret = 0; unsigned long bus_base; unsigned long bus_offset; @@ -405,7 +409,7 @@ int drm_bo_map_bound(struct vm_area_struct *vma) BUG_ON(ret); if (bus_size) { - drm_mem_type_manager_t *man = &bo->dev->bm.man[bo->mem.mem_type]; + struct drm_mem_type_manager *man = &bo->dev->bm.man[bo->mem.mem_type]; unsigned long pfn = (bus_base + bus_offset) >> PAGE_SHIFT; pgprot_t pgprot = drm_io_prot(man->drm_bus_maptype, vma); ret = io_remap_pfn_range(vma, vma->vm_start, pfn, @@ -417,7 +421,7 @@ int drm_bo_map_bound(struct vm_area_struct *vma) } -int drm_bo_add_vma(drm_buffer_object_t * bo, struct vm_area_struct *vma) +int drm_bo_add_vma(struct drm_buffer_object * bo, struct vm_area_struct *vma) { p_mm_entry_t *entry, *n_entry; vma_entry_t *v_entry; @@ -453,7 +457,7 @@ int drm_bo_add_vma(drm_buffer_object_t * bo, struct vm_area_struct *vma) return 0; } -void drm_bo_delete_vma(drm_buffer_object_t * bo, struct vm_area_struct *vma) +void drm_bo_delete_vma(struct drm_buffer_object * bo, struct vm_area_struct *vma) { p_mm_entry_t *entry, *n; vma_entry_t *v_entry, *v_n; @@ -485,7 +489,7 @@ void drm_bo_delete_vma(drm_buffer_object_t * bo, struct vm_area_struct *vma) -int drm_bo_lock_kmm(drm_buffer_object_t * bo) +int drm_bo_lock_kmm(struct drm_buffer_object * bo) { p_mm_entry_t *entry; int lock_ok = 1; @@ -517,7 +521,7 @@ int drm_bo_lock_kmm(drm_buffer_object_t * bo) return -EAGAIN; } -void drm_bo_unlock_kmm(drm_buffer_object_t * bo) +void drm_bo_unlock_kmm(struct drm_buffer_object * bo) { p_mm_entry_t *entry; @@ -528,7 +532,7 @@ void drm_bo_unlock_kmm(drm_buffer_object_t * bo) } } -int drm_bo_remap_bound(drm_buffer_object_t *bo) +int drm_bo_remap_bound(struct drm_buffer_object *bo) { vma_entry_t *v_entry; int ret = 0; @@ -544,7 +548,7 @@ int drm_bo_remap_bound(drm_buffer_object_t *bo) return ret; } -void drm_bo_finish_unmap(drm_buffer_object_t *bo) +void drm_bo_finish_unmap(struct drm_buffer_object *bo) { vma_entry_t *v_entry; @@ -555,3 +559,173 @@ void drm_bo_finish_unmap(drm_buffer_object_t *bo) #endif +#ifdef DRM_IDR_COMPAT_FN +/* only called when idp->lock is held */ +static void __free_layer(struct idr *idp, struct idr_layer *p) +{ + p->ary[0] = idp->id_free; + idp->id_free = p; + idp->id_free_cnt++; +} + +static void free_layer(struct idr *idp, struct idr_layer *p) +{ + unsigned long flags; + + /* + * Depends on the return element being zeroed. + */ + spin_lock_irqsave(&idp->lock, flags); + __free_layer(idp, p); + spin_unlock_irqrestore(&idp->lock, flags); +} + +/** + * idr_for_each - iterate through all stored pointers + * @idp: idr handle + * @fn: function to be called for each pointer + * @data: data passed back to callback function + * + * Iterate over the pointers registered with the given idr. The + * callback function will be called for each pointer currently + * registered, passing the id, the pointer and the data pointer passed + * to this function. It is not safe to modify the idr tree while in + * the callback, so functions such as idr_get_new and idr_remove are + * not allowed. + * + * We check the return of @fn each time. If it returns anything other + * than 0, we break out and return that value. + * +* The caller must serialize idr_find() vs idr_get_new() and idr_remove(). + */ +int idr_for_each(struct idr *idp, + int (*fn)(int id, void *p, void *data), void *data) +{ + int n, id, max, error = 0; + struct idr_layer *p; + struct idr_layer *pa[MAX_LEVEL]; + struct idr_layer **paa = &pa[0]; + + n = idp->layers * IDR_BITS; + p = idp->top; + max = 1 << n; + + id = 0; + while (id < max) { + while (n > 0 && p) { + n -= IDR_BITS; + *paa++ = p; + p = p->ary[(id >> n) & IDR_MASK]; + } + + if (p) { + error = fn(id, (void *)p, data); + if (error) + break; + } + + id += 1 << n; + while (n < fls(id)) { + n += IDR_BITS; + p = *--paa; + } + } + + return error; +} +EXPORT_SYMBOL(idr_for_each); + +/** + * idr_remove_all - remove all ids from the given idr tree + * @idp: idr handle + * + * idr_destroy() only frees up unused, cached idp_layers, but this + * function will remove all id mappings and leave all idp_layers + * unused. + * + * A typical clean-up sequence for objects stored in an idr tree, will + * use idr_for_each() to free all objects, if necessay, then + * idr_remove_all() to remove all ids, and idr_destroy() to free + * up the cached idr_layers. + */ +void idr_remove_all(struct idr *idp) +{ + int n, id, max, error = 0; + struct idr_layer *p; + struct idr_layer *pa[MAX_LEVEL]; + struct idr_layer **paa = &pa[0]; + + n = idp->layers * IDR_BITS; + p = idp->top; + max = 1 << n; + + id = 0; + while (id < max && !error) { + while (n > IDR_BITS && p) { + n -= IDR_BITS; + *paa++ = p; + p = p->ary[(id >> n) & IDR_MASK]; + } + + id += 1 << n; + while (n < fls(id)) { + if (p) { + memset(p, 0, sizeof *p); + free_layer(idp, p); + } + n += IDR_BITS; + p = *--paa; + } + } + idp->top = NULL; + idp->layers = 0; +} +EXPORT_SYMBOL(idr_remove_all); + +#endif /* DRM_IDR_COMPAT_FN */ + + + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)) +/** + * idr_replace - replace pointer for given id + * @idp: idr handle + * @ptr: pointer you want associated with the id + * @id: lookup key + * + * Replace the pointer registered with an id and return the old value. + * A -ENOENT return indicates that @id was not found. + * A -EINVAL return indicates that @id was not within valid constraints. + * + * The caller must serialize vs idr_find(), idr_get_new(), and idr_remove(). + */ +void *idr_replace(struct idr *idp, void *ptr, int id) +{ + int n; + struct idr_layer *p, *old_p; + + n = idp->layers * IDR_BITS; + p = idp->top; + + id &= MAX_ID_MASK; + + if (id >= (1 << n)) + return ERR_PTR(-EINVAL); + + n -= IDR_BITS; + while ((n > 0) && p) { + p = p->ary[(id >> n) & IDR_MASK]; + n -= IDR_BITS; + } + + n = id & IDR_MASK; + if (unlikely(p == NULL || !test_bit(n, &p->bitmap))) + return ERR_PTR(-ENOENT); + + old_p = p->ary[n]; + p->ary[n] = ptr; + + return (void *)old_p; +} +EXPORT_SYMBOL(idr_replace); +#endif |