diff options
Diffstat (limited to 'linux-core/drm_memory.h')
| -rw-r--r-- | linux-core/drm_memory.h | 61 |
1 files changed, 54 insertions, 7 deletions
diff --git a/linux-core/drm_memory.h b/linux-core/drm_memory.h index 5f111459..2a969fcd 100644 --- a/linux-core/drm_memory.h +++ b/linux-core/drm_memory.h @@ -1,4 +1,12 @@ -/* drm_memory.h -- Memory management wrappers for DRM -*- linux-c -*- +/** + * \file drm_memory.h + * Memory management wrappers for DRM + * + * \author Rickard E. (Rik) Faith <faith@valinux.com> + * \author Gareth Hughes <gareth@valinux.com> + */ + +/* * Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com * * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. @@ -23,17 +31,14 @@ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: - * Rickard E. (Rik) Faith <faith@valinux.com> - * Gareth Hughes <gareth@valinux.com> */ #define __NO_VERSION__ #include <linux/config.h> #include "drmP.h" -/* Cut down version of drm_memory_debug.h, which used to be called +/** + * Cut down version of drm_memory_debug.h, which used to be called * drm_memory.h. If you want the debug functionality, change 0 to 1 * below. */ @@ -196,22 +201,38 @@ static inline void drm_ioremapfree(void *pt, unsigned long size, drm_device_t *d #if DEBUG_MEMORY #include "drm_memory_debug.h" #else + +/** No-op. */ void DRM(mem_init)(void) { } -/* drm_mem_info is called whenever a process reads /dev/drm/mem. */ +/** + * Called when "/proc/dri/%dev%/mem" is read. + * + * \param buf output buffer. + * \param start start of output data. + * \param offset requested start offset. + * \param len requested number of bytes. + * \param eof whether there is no more data to return. + * \param data private data. + * \return number of written bytes. + * + * No-op. + */ int DRM(mem_info)(char *buf, char **start, off_t offset, int len, int *eof, void *data) { return 0; } +/** Wrapper around kmalloc() */ void *DRM(alloc)(size_t size, int area) { return kmalloc(size, GFP_KERNEL); } +/** Wrapper around kmalloc() and kfree() */ void *DRM(realloc)(void *oldpt, size_t oldsize, size_t size, int area) { void *pt; @@ -224,11 +245,21 @@ void *DRM(realloc)(void *oldpt, size_t oldsize, size_t size, int area) return pt; } +/** Wrapper around kfree() */ void DRM(free)(void *pt, size_t size, int area) { kfree(pt); } +/** + * Allocate pages. + * + * \param order size order. + * \param area memory area. (Not used.) + * \return page address on success, or zero on failure. + * + * Allocate and reserve free pages. + */ unsigned long DRM(alloc_pages)(int order, int area) { unsigned long address; @@ -253,6 +284,15 @@ unsigned long DRM(alloc_pages)(int order, int area) return address; } +/** + * Free pages. + * + * \param address address of the pages to free. + * \param order size order. + * \param area memory area. (Not used.) + * + * Unreserve and free pages allocated by alloc_pages(). + */ void DRM(free_pages)(unsigned long address, int order, int area) { unsigned long bytes = PAGE_SIZE << order; @@ -272,37 +312,44 @@ void DRM(free_pages)(unsigned long address, int order, int area) free_pages(address, order); } +/** Wrapper around drm_ioremap() */ void *DRM(ioremap)(unsigned long offset, unsigned long size, drm_device_t *dev) { return drm_ioremap(offset, size, dev); } +/** Wrapper around drm_ioremap_nocache() */ void *DRM(ioremap_nocache)(unsigned long offset, unsigned long size, drm_device_t *dev) { return drm_ioremap_nocache(offset, size, dev); } +/** Wrapper around drm_iounmap() */ void DRM(ioremapfree)(void *pt, unsigned long size, drm_device_t *dev) { drm_ioremapfree(pt, size, dev); } #if __REALLY_HAVE_AGP +/** Wrapper around agp_allocate_memory() */ agp_memory *DRM(alloc_agp)(int pages, u32 type) { return DRM(agp_allocate_memory)(pages, type); } +/** Wrapper around agp_free_memory() */ int DRM(free_agp)(agp_memory *handle, int pages) { return DRM(agp_free_memory)(handle) ? 0 : -EINVAL; } +/** Wrapper around agp_bind_memory() */ int DRM(bind_agp)(agp_memory *handle, unsigned int start) { return DRM(agp_bind_memory)(handle, start); } +/** Wrapper around agp_unbind_memory() */ int DRM(unbind_agp)(agp_memory *handle) { return DRM(agp_unbind_memory)(handle); |