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drm/bsd-core/drmP.h

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/* drmP.h -- Private header for Direct Rendering Manager -*- c -*-
* Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com
* Revised: Tue Oct 12 08:51:07 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* 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
* PRECISION INSIGHT 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.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drmP.h,v 1.58 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bsd/drm/kernel/drmP.h,v 1.3 2001/03/06 16:45:26 dawes Exp $
*
*/
#ifndef _DRM_P_H_
#define _DRM_P_H_
#ifdef _KERNEL
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/stat.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/fcntl.h>
#include <sys/uio.h>
#include <sys/filio.h>
#include <sys/sysctl.h>
#include <sys/select.h>
#include <sys/bus.h>
#if __FreeBSD_version >= 400005
#include <sys/taskqueue.h>
#endif
#if __FreeBSD_version >= 400006
#define DRM_AGP
#endif
#ifdef DRM_AGP
#include <pci/agpvar.h>
#endif
#include "drm.h"
typedef u_int32_t atomic_t;
typedef u_int32_t cycles_t;
typedef u_int32_t spinlock_t;
#define atomic_set(p, v) (*(p) = (v))
#define atomic_read(p) (*(p))
#define atomic_inc(p) atomic_add_int(p, 1)
#define atomic_dec(p) atomic_subtract_int(p, 1)
#define atomic_add(n, p) atomic_add_int(p, n)
#define atomic_sub(n, p) atomic_subtract_int(p, n)
/* The version number here is a guess */
#if __FreeBSD_version >= 500010
#define callout_init(a) callout_init(a, 0)
#endif
/* Fake this */
static __inline u_int32_t
test_and_set_bit(int b, volatile u_int32_t *p)
{
int s = splhigh();
u_int32_t m = 1<<b;
u_int32_t r = *p & m;
*p |= m;
splx(s);
return r;
}
static __inline void
clear_bit(int b, volatile u_int32_t *p)
{
atomic_clear_int(p + (b >> 5), 1 << (b & 0x1f));
}
static __inline void
set_bit(int b, volatile u_int32_t *p)
{
atomic_set_int(p + (b >> 5), 1 << (b & 0x1f));
}
static __inline int
test_bit(int b, volatile u_int32_t *p)
{
return p[b >> 5] & (1 << (b & 0x1f));
}
static __inline int
find_first_zero_bit(volatile u_int32_t *p, int max)
{
int b;
for (b = 0; b < max; b += 32) {
if (p[b >> 5] != ~0) {
for (;;) {
if ((p[b >> 5] & (1 << (b & 0x1f))) == 0)
return b;
b++;
}
}
}
return max;
}
#define spldrm() spltty()
#define memset(p, v, s) bzero(p, s)
/*
* Fake out the module macros for versions of FreeBSD where they don't
* exist.
*/
#if __FreeBSD_version < 400002
#define MODULE_VERSION(a,b) struct __hack
#define MODULE_DEPEND(a,b,c,d,e) struct __hack
#endif
#define DRM_DEBUG_CODE 0 /* Include debugging code (if > 1, then
also include looping detection. */
#define DRM_DMA_HISTOGRAM 1 /* Make histogram of DMA latency. */
#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_TIME_SLICE (hz/20) /* Time slice for GLXContexts */
#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_MAX_CTXBITMAP (PAGE_SIZE * 8)
/* Backward compatibility section */
#ifndef _PAGE_PWT
/* The name of _PAGE_WT was changed to
_PAGE_PWT in Linux 2.2.6 */
#define _PAGE_PWT _PAGE_WT
#endif
#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
#define _DRM_CAS(lock,old,new,__ret) \
do { \
int __dummy; /* Can't mark eax as clobbered */ \
__asm__ __volatile__( \
"lock ; cmpxchg %4,%1\n\t" \
"setnz %0" \
: "=d" (__ret), \
"=m" (__drm_dummy_lock(lock)), \
"=a" (__dummy) \
: "2" (old), \
"r" (new)); \
} while (0)
/* Macros to make printk easier */
#define DRM_ERROR(fmt, arg...) \
printf("error: " "[" DRM_NAME ":" __FUNCTION__ "] *ERROR* " fmt , ##arg)
#define DRM_MEM_ERROR(area, fmt, arg...) \
printf("error: " "[" DRM_NAME ":" __FUNCTION__ ":%s] *ERROR* " fmt , \
drm_mem_stats[area].name , ##arg)
#define DRM_INFO(fmt, arg...) printf("info: " "[" DRM_NAME "] " fmt , ##arg)
#if DRM_DEBUG_CODE
#define DRM_DEBUG(fmt, arg...) \
do { \
if (drm_flags&DRM_FLAG_DEBUG) \
printf("[" DRM_NAME ":" __FUNCTION__ "] " fmt , \
##arg); \
} while (0)
#else
#define DRM_DEBUG(fmt, arg...) do { } while (0)
#endif
#define DRM_PROC_LIMIT (PAGE_SIZE-80)
#define DRM_SYSCTL_PRINT(fmt, arg...) \
snprintf(buf, sizeof(buf), fmt, ##arg); \
error = SYSCTL_OUT(req, buf, strlen(buf)); \
if (error) return error;
#define DRM_SYSCTL_PRINT_RET(ret, fmt, arg...) \
snprintf(buf, sizeof(buf), fmt, ##arg); \
error = SYSCTL_OUT(req, buf, strlen(buf)); \
if (error) { ret; return error; }
/* 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)
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 */
int 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 */
void *dev_private;
int dev_priv_size;
#if DRM_DMA_HISTOGRAM
struct timespec time_queued; /* Queued to kernel DMA queue */
struct timespec time_dispatched; /* Dispatched to hardware */
struct timespec time_completed; /* Completed by hardware */
struct timespec time_freed; /* Back on freelist */
#endif
} 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 */
spinlock_t read_lock;
spinlock_t 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 */
int 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 */
struct simplelock lock; /* hope this doesn't need to be linux compatible */
} 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;
typedef 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;
} drm_file_t;
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 */
int read_queue; /* Processes waiting on block_read */
atomic_t block_write; /* Queue blocked for writes */
int write_queue; /* Processes waiting on block_write */
atomic_t total_queued; /* Total queued statistic */
atomic_t total_flushed;/* Total flushes statistic */
atomic_t total_locks; /* Total locks statistics */
drm_ctx_flags_t flags; /* Context preserving and 2D-only */
drm_waitlist_t waitlist; /* Pending buffers */
int 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) */
int 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 {
/* 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 */
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;
vm_offset_t *pagelist;
unsigned long byte_count;
enum {
_DRM_DMA_USE_AGP = 0x01
} 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*/
int waiting; /* Processes waiting on free bufs */
} drm_device_dma_t;
#ifdef DRM_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;
} drm_agp_head_t;
#endif
typedef struct drm_device {
const char *name; /* Simple driver name */
char *unique; /* Unique identifier: e.g., busid */
int unique_len; /* Length of unique field */
device_t device; /* Device instance from newbus */
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 */
struct proc_dir_entry *root; /* Root for this device's entries */
/* Locks */
struct simplelock 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 */
atomic_t total_open;
atomic_t total_close;
atomic_t total_ioctl;
atomic_t total_irq; /* Total interruptions */
atomic_t total_ctx; /* Total context switches */
atomic_t total_locks;
atomic_t total_unlocks;
atomic_t total_contends;
atomic_t total_sleeps;
/* Authentication */
drm_file_list_t files;
drm_magic_head_t magiclist[DRM_HASH_SIZE];
/* Memory management */
drm_map_t **maplist; /* Vector of pointers to regions */
int map_count; /* Number of mappable regions */
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 */
struct resource *irq; /* Interrupt used by board */
void *irqh; /* Handle from bus_setup_intr */
__volatile__ long context_flag; /* Context swapping flag */
__volatile__ long interrupt_flag;/* Interruption handler flag */
__volatile__ long dma_flag; /* DMA dispatch flag */
struct callout timer; /* Timer for delaying ctx switch */
int context_wait; /* Processes waiting on ctx switch */
int last_checked; /* Last context checked for DMA */
int last_context; /* Last current context */
int last_switch; /* Time at last context switch */
#if __FreeBSD_version >= 400005
struct task task;
#endif
struct timespec ctx_start;
struct timespec lck_start;
#if DRM_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 */
struct sigio *buf_sigio; /* Processes waiting for SIGIO */
struct selinfo buf_sel; /* Workspace for select/poll */
int buf_readers; /* Processes waiting to read */
int buf_writers; /* Processes waiting to ctx switch */
int buf_selecting; /* True if poll sleeper */
/* Sysctl support */
struct drm_sysctl_info *sysctl;
#ifdef DRM_AGP
drm_agp_head_t *agp;
#endif
u_int32_t *ctx_bitmap;
void *dev_private;
} drm_device_t;
/* Internal function definitions */
/* Misc. support (init.c) */
extern int drm_flags;
extern void drm_parse_options(char *s);
/* Device support (fops.c) */
extern drm_file_t *drm_find_file_by_proc(drm_device_t *dev, struct proc *p);
extern int drm_open_helper(dev_t kdev, int flags, int fmt, struct proc *p,
drm_device_t *dev);
extern d_close_t drm_close;
extern d_read_t drm_read;
extern d_write_t drm_write;
extern d_poll_t drm_poll;
extern int drm_fsetown(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p);
extern int drm_fgetown(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p);
extern int drm_write_string(drm_device_t *dev, const char *s);
#if 0
/* Mapping support (vm.c) */
extern unsigned long drm_vm_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access);
extern unsigned long drm_vm_shm_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access);
extern unsigned long drm_vm_dma_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access);
extern void drm_vm_open(struct vm_area_struct *vma);
extern void drm_vm_close(struct vm_area_struct *vma);
extern int drm_mmap_dma(struct file *filp,
struct vm_area_struct *vma);
#endif
extern d_mmap_t drm_mmap;
/* Proc support (proc.c) */
extern int drm_sysctl_init(drm_device_t *dev);
extern int drm_sysctl_cleanup(drm_device_t *dev);
/* Memory management support (memory.c) */
extern void drm_mem_init(void);
#if __FreeBSD_version < 411000
#define DRM_SYSCTL_HANDLER_ARGS SYSCTL_HANDLER_ARGS
#else
#define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS)
#endif
extern int drm_mem_info DRM_SYSCTL_HANDLER_ARGS;
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 unsigned long drm_alloc_pages(int order, int area);
extern void drm_free_pages(unsigned long address, int order,
int area);
extern void *drm_ioremap(unsigned long offset, unsigned long size);
extern void drm_ioremapfree(void *pt, unsigned long size);
#ifdef DRM_AGP
extern void *drm_alloc_agp(int pages, u_int32_t type);
extern int drm_free_agp(void *handle, int pages);
extern int drm_bind_agp(void *handle, unsigned int start);
extern int drm_unbind_agp(void *handle);
#endif
/* Buffer management support (bufs.c) */
extern int drm_order(unsigned long size);
extern d_ioctl_t drm_addmap;
extern d_ioctl_t drm_addbufs;
extern d_ioctl_t drm_infobufs;
extern d_ioctl_t drm_markbufs;
extern d_ioctl_t drm_freebufs;
extern d_ioctl_t drm_mapbufs;
/* Buffer list management support (lists.c) */
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);
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);
/* DMA support (gen_dma.c) */
extern void 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);
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);
extern void drm_wakeup(drm_device_t *dev, drm_buf_t *buf);
extern void drm_clear_next_buffer(drm_device_t *dev);
extern int drm_select_queue(drm_device_t *dev,
void (*wrapper)(void *));
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);
#if DRM_DMA_HISTOGRAM
extern int drm_histogram_slot(struct timespec *ts);
extern void drm_histogram_compute(drm_device_t *dev, drm_buf_t *buf);
#endif
/* Misc. IOCTL support (ioctl.c) */
extern d_ioctl_t drm_irq_busid;
extern d_ioctl_t drm_getunique;
extern d_ioctl_t drm_setunique;
/* Context IOCTL support (context.c) */
extern d_ioctl_t drm_resctx;
extern d_ioctl_t drm_addctx;
extern d_ioctl_t drm_modctx;
extern d_ioctl_t drm_getctx;
extern d_ioctl_t drm_switchctx;
extern d_ioctl_t drm_newctx;
extern d_ioctl_t drm_rmctx;
/* Drawable IOCTL support (drawable.c) */
extern d_ioctl_t drm_adddraw;
extern d_ioctl_t drm_rmdraw;
/* Authentication IOCTL support (auth.c) */
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);
extern d_ioctl_t drm_getmagic;
extern d_ioctl_t drm_authmagic;
/* Locking IOCTL support (lock.c) */
extern d_ioctl_t drm_block;
extern d_ioctl_t drm_unblock;
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 d_ioctl_t drm_finish;
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);
/* Context Bitmap support (ctxbitmap.c) */
extern int drm_ctxbitmap_init(drm_device_t *dev);
extern void drm_ctxbitmap_cleanup(drm_device_t *dev);
extern int drm_ctxbitmap_next(drm_device_t *dev);
extern void drm_ctxbitmap_free(drm_device_t *dev, int ctx_handle);
#ifdef DRM_AGP
/* AGP/GART support (agpsupport.c) */
extern drm_agp_head_t *drm_agp_init(void);
extern d_ioctl_t drm_agp_acquire;
extern d_ioctl_t drm_agp_release;
extern d_ioctl_t drm_agp_enable;
extern d_ioctl_t drm_agp_info;
extern d_ioctl_t drm_agp_alloc;
extern d_ioctl_t drm_agp_free;
extern d_ioctl_t drm_agp_unbind;
extern d_ioctl_t drm_agp_bind;
#endif
#endif
#endif
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