/* drmP.h -- Private header for Direct Rendering Manager -*- linux-c -*- * Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com * * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * 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 * Gareth Hughes */ #ifndef _DRM_P_H_ #define _DRM_P_H_ #if defined(_KERNEL) || defined(__KERNEL__) /* DRM template customization defaults */ #ifndef __HAVE_AGP #define __HAVE_AGP 0 #endif #ifndef __HAVE_MTRR #define __HAVE_MTRR 0 #endif #ifndef __HAVE_CTX_BITMAP #define __HAVE_CTX_BITMAP 0 #endif #ifndef __HAVE_DMA #define __HAVE_DMA 0 #endif #ifndef __HAVE_DMA_IRQ #define __HAVE_DMA_IRQ 0 #endif #ifndef __HAVE_DMA_WAITLIST #define __HAVE_DMA_WAITLIST 0 #endif #ifndef __HAVE_DMA_FREELIST #define __HAVE_DMA_FREELIST 0 #endif #ifndef __HAVE_DMA_HISTOGRAM #define __HAVE_DMA_HISTOGRAM 0 #endif #define DRM_DEBUG_CODE 0 /* Include debugging code (if > 1, then also include looping detection. */ typedef struct drm_device drm_device_t; typedef struct drm_file drm_file_t; /* There's undoubtably more of this file to go into these OS dependent ones. */ #ifdef __FreeBSD__ #include "drm_os_freebsd.h" #elif defined __NetBSD__ #include "drm_os_netbsd.h" #endif #include "drm.h" /* Begin the DRM... */ #define DRM_HASH_SIZE 16 /* Size of key hash table */ #define DRM_KERNEL_CONTEXT 0 /* Change drm_resctx if changed */ #define DRM_RESERVED_CONTEXTS 1 /* Change drm_resctx if changed */ #define DRM_LOOPING_LIMIT 5000000 #define DRM_BSZ 1024 /* Buffer size for /dev/drm? output */ #define DRM_LOCK_SLICE 1 /* Time slice for lock, in jiffies */ #define DRM_FLAG_DEBUG 0x01 #define DRM_FLAG_NOCTX 0x02 #define DRM_MEM_DMA 0 #define DRM_MEM_SAREA 1 #define DRM_MEM_DRIVER 2 #define DRM_MEM_MAGIC 3 #define DRM_MEM_IOCTLS 4 #define DRM_MEM_MAPS 5 #define DRM_MEM_VMAS 6 #define DRM_MEM_BUFS 7 #define DRM_MEM_SEGS 8 #define DRM_MEM_PAGES 9 #define DRM_MEM_FILES 10 #define DRM_MEM_QUEUES 11 #define DRM_MEM_CMDS 12 #define DRM_MEM_MAPPINGS 13 #define DRM_MEM_BUFLISTS 14 #define DRM_MEM_AGPLISTS 15 #define DRM_MEM_TOTALAGP 16 #define DRM_MEM_BOUNDAGP 17 #define DRM_MEM_CTXBITMAP 18 #define DRM_MEM_STUB 19 #define DRM_MEM_SGLISTS 20 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8) /* Backward compatibility section */ /* _PAGE_WT changed to _PAGE_PWT in 2.2.6 */ #ifndef _PAGE_PWT #define _PAGE_PWT _PAGE_WT #endif /* Mapping helper macros */ #define DRM_IOREMAP(map) \ (map)->handle = DRM(ioremap)( dev, map ) #define DRM_IOREMAP_NOCACHE(map) \ (map)->handle = DRM(ioremap_nocache)( dev, map ) #define DRM_IOREMAPFREE(map) \ do { \ if ( (map)->handle && (map)->size ) \ DRM(ioremapfree)( map ); \ } while (0) /* Internal types and structures */ #define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) #define DRM_MIN(a,b) ((a)<(b)?(a):(b)) #define DRM_MAX(a,b) ((a)>(b)?(a):(b)) #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1)) #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x)) #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist) #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \ (_map) = (_dev)->context_sareas[_ctx]; \ } while(0) typedef struct drm_pci_list { u16 vendor; u16 device; } drm_pci_list_t; typedef struct drm_ioctl_desc { d_ioctl_t *func; int auth_needed; int root_only; } drm_ioctl_desc_t; typedef struct drm_devstate { pid_t owner; /* X server pid holding x_lock */ } drm_devstate_t; typedef struct drm_magic_entry { drm_magic_t magic; struct drm_file *priv; struct drm_magic_entry *next; } drm_magic_entry_t; typedef struct drm_magic_head { struct drm_magic_entry *head; struct drm_magic_entry *tail; } drm_magic_head_t; typedef struct drm_vma_entry { struct vm_area_struct *vma; struct drm_vma_entry *next; pid_t pid; } drm_vma_entry_t; typedef struct drm_buf { int idx; /* Index into master buflist */ int total; /* Buffer size */ int order; /* log-base-2(total) */ int used; /* Amount of buffer in use (for DMA) */ unsigned long offset; /* Byte offset (used internally) */ void *address; /* Address of buffer */ unsigned long bus_address; /* Bus address of buffer */ struct drm_buf *next; /* Kernel-only: used for free list */ __volatile__ int waiting; /* On kernel DMA queue */ __volatile__ int pending; /* On hardware DMA queue */ wait_queue_head_t dma_wait; /* Processes waiting */ pid_t pid; /* PID of holding process */ int context; /* Kernel queue for this buffer */ int while_locked;/* Dispatch this buffer while locked */ enum { DRM_LIST_NONE = 0, DRM_LIST_FREE = 1, DRM_LIST_WAIT = 2, DRM_LIST_PEND = 3, DRM_LIST_PRIO = 4, DRM_LIST_RECLAIM = 5 } list; /* Which list we're on */ #if DRM_DMA_HISTOGRAM cycles_t time_queued; /* Queued to kernel DMA queue */ cycles_t time_dispatched; /* Dispatched to hardware */ cycles_t time_completed; /* Completed by hardware */ cycles_t time_freed; /* Back on freelist */ #endif int dev_priv_size; /* Size of buffer private stoarge */ void *dev_private; /* Per-buffer private storage */ } drm_buf_t; #if DRM_DMA_HISTOGRAM #define DRM_DMA_HISTOGRAM_SLOTS 9 #define DRM_DMA_HISTOGRAM_INITIAL 10 #define DRM_DMA_HISTOGRAM_NEXT(current) ((current)*10) typedef struct drm_histogram { atomic_t total; atomic_t queued_to_dispatched[DRM_DMA_HISTOGRAM_SLOTS]; atomic_t dispatched_to_completed[DRM_DMA_HISTOGRAM_SLOTS]; atomic_t completed_to_freed[DRM_DMA_HISTOGRAM_SLOTS]; atomic_t queued_to_completed[DRM_DMA_HISTOGRAM_SLOTS]; atomic_t queued_to_freed[DRM_DMA_HISTOGRAM_SLOTS]; atomic_t dma[DRM_DMA_HISTOGRAM_SLOTS]; atomic_t schedule[DRM_DMA_HISTOGRAM_SLOTS]; atomic_t ctx[DRM_DMA_HISTOGRAM_SLOTS]; atomic_t lacq[DRM_DMA_HISTOGRAM_SLOTS]; atomic_t lhld[DRM_DMA_HISTOGRAM_SLOTS]; } drm_histogram_t; #endif /* bufs is one longer than it has to be */ typedef struct drm_waitlist { int count; /* Number of possible buffers */ drm_buf_t **bufs; /* List of pointers to buffers */ drm_buf_t **rp; /* Read pointer */ drm_buf_t **wp; /* Write pointer */ drm_buf_t **end; /* End pointer */ DRM_SPINTYPE read_lock; DRM_SPINTYPE write_lock; } drm_waitlist_t; typedef struct drm_freelist { int initialized; /* Freelist in use */ atomic_t count; /* Number of free buffers */ drm_buf_t *next; /* End pointer */ wait_queue_head_t waiting; /* Processes waiting on free bufs */ int low_mark; /* Low water mark */ int high_mark; /* High water mark */ atomic_t wfh; /* If waiting for high mark */ DRM_SPINTYPE lock; } drm_freelist_t; typedef struct drm_buf_entry { int buf_size; int buf_count; drm_buf_t *buflist; int seg_count; int page_order; unsigned long *seglist; drm_freelist_t freelist; } drm_buf_entry_t; typedef struct drm_hw_lock { __volatile__ unsigned int lock; char padding[60]; /* Pad to cache line */ } drm_hw_lock_t; typedef TAILQ_HEAD(drm_file_list, drm_file) drm_file_list_t; struct drm_file { TAILQ_ENTRY(drm_file) link; int authenticated; int minor; pid_t pid; uid_t uid; int refs; drm_magic_t magic; unsigned long ioctl_count; struct drm_device *devXX; }; typedef struct drm_queue { atomic_t use_count; /* Outstanding uses (+1) */ atomic_t finalization; /* Finalization in progress */ atomic_t block_count; /* Count of processes waiting */ atomic_t block_read; /* Queue blocked for reads */ wait_queue_head_t read_queue; /* Processes waiting on block_read */ atomic_t block_write; /* Queue blocked for writes */ wait_queue_head_t write_queue; /* Processes waiting on block_write */ #if 1 atomic_t total_queued; /* Total queued statistic */ atomic_t total_flushed;/* Total flushes statistic */ atomic_t total_locks; /* Total locks statistics */ #endif drm_ctx_flags_t flags; /* Context preserving and 2D-only */ drm_waitlist_t waitlist; /* Pending buffers */ wait_queue_head_t flush_queue; /* Processes waiting until flush */ } drm_queue_t; typedef struct drm_lock_data { drm_hw_lock_t *hw_lock; /* Hardware lock */ pid_t pid; /* PID of lock holder (0=kernel) */ wait_queue_head_t lock_queue; /* Queue of blocked processes */ unsigned long lock_time; /* Time of last lock in jiffies */ } drm_lock_data_t; typedef struct drm_device_dma { #if 0 /* Performance Counters */ atomic_t total_prio; /* Total DRM_DMA_PRIORITY */ atomic_t total_bytes; /* Total bytes DMA'd */ atomic_t total_dmas; /* Total DMA buffers dispatched */ atomic_t total_missed_dma; /* Missed drm_do_dma */ atomic_t total_missed_lock; /* Missed lock in drm_do_dma */ atomic_t total_missed_free; /* Missed drm_free_this_buffer */ atomic_t total_missed_sched;/* Missed drm_dma_schedule */ atomic_t total_tried; /* Tried next_buffer */ atomic_t total_hit; /* Sent next_buffer */ atomic_t total_lost; /* Lost interrupt */ #endif drm_buf_entry_t bufs[DRM_MAX_ORDER+1]; int buf_count; drm_buf_t **buflist; /* Vector of pointers info bufs */ int seg_count; int page_count; unsigned long *pagelist; unsigned long byte_count; enum { _DRM_DMA_USE_AGP = 0x01, _DRM_DMA_USE_SG = 0x02 } flags; /* DMA support */ drm_buf_t *this_buffer; /* Buffer being sent */ drm_buf_t *next_buffer; /* Selected buffer to send */ drm_queue_t *next_queue; /* Queue from which buffer selected*/ wait_queue_head_t waiting; /* Processes waiting on free bufs */ } drm_device_dma_t; #if __REALLY_HAVE_AGP typedef struct drm_agp_mem { void *handle; unsigned long bound; /* address */ int pages; struct drm_agp_mem *prev; struct drm_agp_mem *next; } drm_agp_mem_t; typedef struct drm_agp_head { device_t agpdev; struct agp_info info; const char *chipset; drm_agp_mem_t *memory; unsigned long mode; int enabled; int acquired; unsigned long base; int agp_mtrr; int cant_use_aperture; unsigned long page_mask; } drm_agp_head_t; #endif typedef struct drm_sg_mem { unsigned long handle; void *virtual; int pages; dma_addr_t *busaddr; } drm_sg_mem_t; typedef struct drm_sigdata { int context; drm_hw_lock_t *lock; } drm_sigdata_t; typedef struct drm_local_map { unsigned long offset; /* Physical address (0 for SAREA)*/ unsigned long size; /* Physical size (bytes) */ drm_map_type_t type; /* Type of memory mapped */ drm_map_flags_t flags; /* Flags */ void *handle; /* User-space: "Handle" to pass to mmap */ /* Kernel-space: kernel-virtual address */ int mtrr; /* MTRR slot used */ /* Private data */ bus_space_tag_t iot; bus_space_handle_t ioh; } drm_local_map_t; typedef TAILQ_HEAD(drm_map_list, drm_map_list_entry) drm_map_list_t; typedef struct drm_map_list_entry { TAILQ_ENTRY(drm_map_list_entry) link; drm_local_map_t *map; } drm_map_list_entry_t; TAILQ_HEAD(drm_vbl_sig_list, drm_vbl_sig); typedef struct drm_vbl_sig { TAILQ_ENTRY(drm_vbl_sig) link; unsigned int sequence; int signo; int pid; } drm_vbl_sig_t; struct drm_device { #ifdef __NetBSD__ struct device device; /* NetBSD's softc is an extension of struct device */ #endif const char *name; /* Simple driver name */ char *unique; /* Unique identifier: e.g., busid */ int unique_len; /* Length of unique field */ #ifdef __FreeBSD__ device_t device; /* Device instance from newbus */ #endif dev_t devnode; /* Device number for mknod */ char *devname; /* For /proc/interrupts */ int blocked; /* Blocked due to VC switch? */ int flags; /* Flags to open(2) */ int writable; /* Opened with FWRITE */ /* Locks */ DRM_SPINTYPE count_lock; /* For inuse, open_count, buf_use */ struct lock dev_lock; /* For others */ /* Usage Counters */ int open_count; /* Outstanding files open */ atomic_t ioctl_count; /* Outstanding IOCTLs pending */ atomic_t vma_count; /* Outstanding vma areas open */ int buf_use; /* Buffers in use -- cannot alloc */ atomic_t buf_alloc; /* Buffer allocation in progress */ /* Performance counters */ unsigned long counters; drm_stat_type_t types[15]; atomic_t counts[15]; /* Authentication */ drm_file_list_t files; drm_magic_head_t magiclist[DRM_HASH_SIZE]; /* Memory management */ drm_map_list_t *maplist; /* Linked list of regions */ int map_count; /* Number of mappable regions */ drm_local_map_t **context_sareas; int max_context; drm_vma_entry_t *vmalist; /* List of vmas (for debugging) */ drm_lock_data_t lock; /* Information on hardware lock */ /* DMA queues (contexts) */ int queue_count; /* Number of active DMA queues */ int queue_reserved; /* Number of reserved DMA queues */ int queue_slots; /* Actual length of queuelist */ drm_queue_t **queuelist; /* Vector of pointers to DMA queues */ drm_device_dma_t *dma; /* Optional pointer for DMA support */ /* Context support */ int irq; /* Interrupt used by board */ int irqrid; /* Interrupt used by board */ #ifdef __FreeBSD__ struct resource *irqr; /* Resource for interrupt used by board */ #elif defined(__NetBSD__) struct pci_attach_args pa; pci_intr_handle_t ih; #endif void *irqh; /* Handle from bus_setup_intr */ atomic_t context_flag; /* Context swapping flag */ atomic_t interrupt_flag; /* Interruption handler flag */ atomic_t dma_flag; /* DMA dispatch flag */ struct callout timer; /* Timer for delaying ctx switch */ wait_queue_head_t context_wait; /* Processes waiting on ctx switch */ int last_checked; /* Last context checked for DMA */ int last_context; /* Last current context */ unsigned long last_switch; /* jiffies at last context switch */ #if __FreeBSD_version >= 400005 struct task task; #endif #if __HAVE_VBL_IRQ wait_queue_head_t vbl_queue; /* vbl wait channel */ atomic_t vbl_received; struct drm_vbl_sig_list vbl_sig_list; DRM_SPINTYPE vbl_lock; #endif cycles_t ctx_start; cycles_t lck_start; #if __HAVE_DMA_HISTOGRAM drm_histogram_t histo; #endif /* Callback to X server for context switch and for heavy-handed reset. */ char buf[DRM_BSZ]; /* Output buffer */ char *buf_rp; /* Read pointer */ char *buf_wp; /* Write pointer */ char *buf_end; /* End pointer */ #ifdef __FreeBSD__ struct sigio *buf_sigio; /* Processes waiting for SIGIO */ #elif defined(__NetBSD__) pid_t buf_pgid; #endif struct selinfo buf_sel; /* Workspace for select/poll */ int buf_selecting;/* True if poll sleeper */ wait_queue_head_t buf_readers; /* Processes waiting to read */ wait_queue_head_t buf_writers; /* Processes waiting to ctx switch */ /* Sysctl support */ struct drm_sysctl_info *sysctl; #if __REALLY_HAVE_AGP drm_agp_head_t *agp; #endif drm_sg_mem_t *sg; /* Scatter gather memory */ atomic_t *ctx_bitmap; void *dev_private; drm_sigdata_t sigdata; /* For block_all_signals */ sigset_t sigmask; }; extern int DRM(flags); extern void DRM(parse_options)( char *s ); extern int DRM(cpu_valid)( void ); /* Authentication (drm_auth.h) */ extern int DRM(add_magic)(drm_device_t *dev, drm_file_t *priv, drm_magic_t magic); extern int DRM(remove_magic)(drm_device_t *dev, drm_magic_t magic); /* Driver support (drm_drv.h) */ extern int DRM(version)( DRM_IOCTL_ARGS ); extern int DRM(write_string)(drm_device_t *dev, const char *s); /* Memory management support (drm_memory.h) */ extern void DRM(mem_init)(void); extern void DRM(mem_uninit)(void); extern void *DRM(alloc)(size_t size, int area); extern void *DRM(realloc)(void *oldpt, size_t oldsize, size_t size, int area); extern char *DRM(strdup)(const char *s, int area); extern void DRM(strfree)(char *s, int area); extern void DRM(free)(void *pt, size_t size, int area); extern void *DRM(ioremap)(drm_device_t *dev, drm_local_map_t *map); extern void *DRM(ioremap_nocache)(drm_device_t *dev, drm_local_map_t *map); extern void DRM(ioremapfree)(drm_local_map_t *map); #if __REALLY_HAVE_AGP extern agp_memory *DRM(alloc_agp)(int pages, u32 type); extern int DRM(free_agp)(agp_memory *handle, int pages); extern int DRM(bind_agp)(agp_memory *handle, unsigned int start); extern int DRM(unbind_agp)(agp_memory *handle); #endif extern int DRM(context_switch)(drm_device_t *dev, int old, int new); extern int DRM(context_switch_complete)(drm_device_t *dev, int new); #if __HAVE_CTX_BITMAP extern int DRM(ctxbitmap_init)( drm_device_t *dev ); extern void DRM(ctxbitmap_cleanup)( drm_device_t *dev ); extern void DRM(ctxbitmap_free)( drm_device_t *dev, int ctx_handle ); extern int DRM(ctxbitmap_next)( drm_device_t *dev ); #endif /* Locking IOCTL support (drm_lock.h) */ extern int DRM(lock_take)(__volatile__ unsigned int *lock, unsigned int context); extern int DRM(lock_transfer)(drm_device_t *dev, __volatile__ unsigned int *lock, unsigned int context); extern int DRM(lock_free)(drm_device_t *dev, __volatile__ unsigned int *lock, unsigned int context); extern int DRM(flush_unblock)(drm_device_t *dev, int context, drm_lock_flags_t flags); extern int DRM(flush_block_and_flush)(drm_device_t *dev, int context, drm_lock_flags_t flags); extern int DRM(notifier)(void *priv); /* Buffer management support (drm_bufs.h) */ extern int DRM(order)( unsigned long size ); #if __HAVE_DMA /* DMA support (drm_dma.h) */ extern int DRM(dma_setup)(drm_device_t *dev); extern void DRM(dma_takedown)(drm_device_t *dev); extern void DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf); extern void DRM(reclaim_buffers)(drm_device_t *dev, pid_t pid); #if __HAVE_OLD_DMA /* GH: This is a dirty hack for now... */ extern void DRM(clear_next_buffer)(drm_device_t *dev); extern int DRM(select_queue)(drm_device_t *dev, void (*wrapper)(unsigned long)); extern int DRM(dma_enqueue)(drm_device_t *dev, drm_dma_t *dma); extern int DRM(dma_get_buffers)(drm_device_t *dev, drm_dma_t *dma); #endif #if __HAVE_DMA_IRQ extern int DRM(irq_install)( drm_device_t *dev, int irq ); extern int DRM(irq_uninstall)( drm_device_t *dev ); extern void DRM(dma_service)( DRM_IRQ_ARGS ); extern void DRM(driver_irq_preinstall)( drm_device_t *dev ); extern void DRM(driver_irq_postinstall)( drm_device_t *dev ); extern void DRM(driver_irq_uninstall)( drm_device_t *dev ); #if __HAVE_DMA_IRQ_BH extern void DRM(dma_immediate_bh)( DRM_TASKQUEUE_ARGS ); #endif #endif #if DRM_DMA_HISTOGRAM extern int DRM(histogram_slot)(unsigned long count); extern void DRM(histogram_compute)(drm_device_t *dev, drm_buf_t *buf); #endif /* Buffer list support (drm_lists.h) */ #if __HAVE_DMA_WAITLIST extern int DRM(waitlist_create)(drm_waitlist_t *bl, int count); extern int DRM(waitlist_destroy)(drm_waitlist_t *bl); extern int DRM(waitlist_put)(drm_waitlist_t *bl, drm_buf_t *buf); extern drm_buf_t *DRM(waitlist_get)(drm_waitlist_t *bl); #endif #if __HAVE_DMA_FREELIST extern int DRM(freelist_create)(drm_freelist_t *bl, int count); extern int DRM(freelist_destroy)(drm_freelist_t *bl); extern int DRM(freelist_put)(drm_device_t *dev, drm_freelist_t *bl, drm_buf_t *buf); extern drm_buf_t *DRM(freelist_get)(drm_freelist_t *bl, int block); #endif #endif /* __HAVE_DMA */ #if __HAVE_VBL_IRQ extern int DRM(vblank_wait)(drm_device_t *dev, unsigned int *vbl_seq); extern void DRM(vbl_send_signals)( drm_device_t *dev ); #endif #if __REALLY_HAVE_AGP /* AGP/GART support (drm_agpsupport.h) */ extern drm_agp_head_t *DRM(agp_init)(void); extern void DRM(agp_uninit)(void); extern void DRM(agp_do_release)(void); extern agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type); extern int DRM(agp_free_memory)(agp_memory *handle); extern int DRM(agp_bind_memory)(agp_memory *handle, off_t start); extern int DRM(agp_unbind_memory)(agp_memory *handle); #endif #if __HAVE_SG /* Scatter Gather Support (drm_scatter.h) */ extern void DRM(sg_cleanup)(drm_sg_mem_t *entry); #endif #if __REALLY_HAVE_SG /* ATI PCIGART support (ati_pcigart.h) */ extern int DRM(ati_pcigart_init)(drm_device_t *dev, unsigned long *addr, dma_addr_t *bus_addr); extern int DRM(ati_pcigart_cleanup)(drm_device_t *dev, unsigned long addr, dma_addr_t bus_addr); #endif #endif /* __KERNEL__ */ #endif /* _DRM_P_H_ */