3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * All rights reserved.
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the "Software"),
16 * to deal in the Software without restriction, including without limitation
17 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
18 * and/or sell copies of the Software, and to permit persons to whom the
19 * Software is furnished to do so, subject to the following conditions:
21 * The above copyright notice and this permission notice (including the next
22 * paragraph) shall be included in all copies or substantial portions of the
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
28 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
29 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
30 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
31 * OTHER DEALINGS IN THE SOFTWARE.
39 /* If you want the memory alloc debug functionality, change define below */
40 /* #define DEBUG_MEMORY */
44 /* add include of current.h so that "current" is defined
45 * before static inline funcs in wait.h. Doing this so we
46 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
47 #include <asm/current.h>
48 #endif /* __alpha__ */
49 #include <linux/module.h>
50 #include <linux/kernel.h>
51 #include <linux/miscdevice.h>
53 #include <linux/proc_fs.h>
54 #include <linux/init.h>
55 #include <linux/file.h>
56 #include <linux/pci.h>
57 #include <linux/jiffies.h>
58 #include <linux/smp_lock.h> /* For (un)lock_kernel */
60 #include <linux/cdev.h>
61 #include <linux/mutex.h>
62 #if defined(__alpha__) || defined(__powerpc__)
63 #include <asm/pgtable.h> /* For pte_wrprotect */
67 #include <asm/uaccess.h>
71 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
72 #include <linux/types.h>
73 #include <linux/agp_backend.h>
75 #include <linux/workqueue.h>
76 #include <linux/poll.h>
77 #include <asm/pgalloc.h>
80 #include <linux/idr.h>
82 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
83 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
85 #include "drm_os_linux.h"
86 #include "drm_hashtab.h"
88 /***********************************************************************/
89 /** \name DRM template customization defaults */
92 /* driver capabilities and requirements mask */
93 #define DRIVER_USE_AGP 0x1
94 #define DRIVER_REQUIRE_AGP 0x2
95 #define DRIVER_USE_MTRR 0x4
96 #define DRIVER_PCI_DMA 0x8
97 #define DRIVER_SG 0x10
98 #define DRIVER_HAVE_DMA 0x20
99 #define DRIVER_HAVE_IRQ 0x40
100 #define DRIVER_IRQ_SHARED 0x80
101 #define DRIVER_IRQ_VBL 0x100
102 #define DRIVER_DMA_QUEUE 0x200
103 #define DRIVER_FB_DMA 0x400
104 #define DRIVER_IRQ_VBL2 0x800
106 /***********************************************************************/
107 /** \name Begin the DRM... */
110 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
111 also include looping detection. */
113 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
114 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
115 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
116 #define DRM_LOOPING_LIMIT 5000000
117 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
118 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
120 #define DRM_FLAG_DEBUG 0x01
122 #define DRM_MEM_DMA 0
123 #define DRM_MEM_SAREA 1
124 #define DRM_MEM_DRIVER 2
125 #define DRM_MEM_MAGIC 3
126 #define DRM_MEM_IOCTLS 4
127 #define DRM_MEM_MAPS 5
128 #define DRM_MEM_VMAS 6
129 #define DRM_MEM_BUFS 7
130 #define DRM_MEM_SEGS 8
131 #define DRM_MEM_PAGES 9
132 #define DRM_MEM_FILES 10
133 #define DRM_MEM_QUEUES 11
134 #define DRM_MEM_CMDS 12
135 #define DRM_MEM_MAPPINGS 13
136 #define DRM_MEM_BUFLISTS 14
137 #define DRM_MEM_AGPLISTS 15
138 #define DRM_MEM_TOTALAGP 16
139 #define DRM_MEM_BOUNDAGP 17
140 #define DRM_MEM_CTXBITMAP 18
141 #define DRM_MEM_STUB 19
142 #define DRM_MEM_SGLISTS 20
143 #define DRM_MEM_CTXLIST 21
144 #define DRM_MEM_MM 22
145 #define DRM_MEM_HASHTAB 23
147 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
148 #define DRM_MAP_HASH_OFFSET 0x10000000
152 /***********************************************************************/
153 /** \name Macros to make printk easier */
159 * \param fmt printf() like format string.
160 * \param arg arguments
162 #define DRM_ERROR(fmt, arg...) \
163 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg)
166 * Memory error output.
168 * \param area memory area where the error occurred.
169 * \param fmt printf() like format string.
170 * \param arg arguments
172 #define DRM_MEM_ERROR(area, fmt, arg...) \
173 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \
174 drm_mem_stats[area].name , ##arg)
176 #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
181 * \param fmt printf() like format string.
182 * \param arg arguments
185 #define DRM_DEBUG(fmt, arg...) \
189 "[" DRM_NAME ":%s] " fmt , \
190 __FUNCTION__ , ##arg); \
193 #define DRM_DEBUG(fmt, arg...) do { } while (0)
196 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
198 #define DRM_PROC_PRINT(fmt, arg...) \
199 len += sprintf(&buf[len], fmt , ##arg); \
200 if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
202 #define DRM_PROC_PRINT_RET(ret, fmt, arg...) \
203 len += sprintf(&buf[len], fmt , ##arg); \
204 if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
208 /***********************************************************************/
209 /** \name Internal types and structures */
212 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
214 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
215 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
216 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
218 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
220 * Get the private SAREA mapping.
222 * \param _dev DRM device.
223 * \param _ctx context number.
224 * \param _map output mapping.
226 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \
227 (_map) = (_dev)->context_sareas[_ctx]; \
231 * Test that the hardware lock is held by the caller, returning otherwise.
233 * \param dev DRM device.
234 * \param filp file pointer of the caller.
236 #define LOCK_TEST_WITH_RETURN( dev, filp ) \
238 if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) || \
239 dev->lock.filp != filp ) { \
240 DRM_ERROR( "%s called without lock held\n", \
247 * Copy and IOCTL return string to user space
249 #define DRM_COPY( name, value ) \
250 len = strlen( value ); \
251 if ( len > name##_len ) len = name##_len; \
252 name##_len = strlen( value ); \
253 if ( len && name ) { \
254 if ( copy_to_user( name, value, len ) ) \
259 * Ioctl function type.
261 * \param inode device inode.
262 * \param file_priv DRM file private pointer.
263 * \param cmd command.
264 * \param arg argument.
266 typedef int drm_ioctl_t(struct inode *inode, struct drm_file *file_priv,
267 unsigned int cmd, unsigned long arg);
269 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
273 #define DRM_MASTER 0x2
274 #define DRM_ROOT_ONLY 0x4
276 typedef struct drm_ioctl_desc {
281 struct drm_magic_entry {
282 struct list_head head;
283 struct drm_hash_item hash_item;
284 struct drm_file *priv;
285 struct drm_magic_entry *next;
288 struct drm_vma_entry {
289 struct list_head head;
290 struct vm_area_struct *vma;
298 int idx; /**< Index into master buflist */
299 int total; /**< Buffer size */
300 int order; /**< log-base-2(total) */
301 int used; /**< Amount of buffer in use (for DMA) */
302 unsigned long offset; /**< Byte offset (used internally) */
303 void *address; /**< Address of buffer */
304 unsigned long bus_address; /**< Bus address of buffer */
305 struct drm_buf *next; /**< Kernel-only: used for free list */
306 __volatile__ int waiting; /**< On kernel DMA queue */
307 __volatile__ int pending; /**< On hardware DMA queue */
308 wait_queue_head_t dma_wait; /**< Processes waiting */
309 struct drm_file *file_priv; /**< Private of holding file descr */
310 int context; /**< Kernel queue for this buffer */
311 int while_locked; /**< Dispatch this buffer while locked */
319 } list; /**< Which list we're on */
321 int dev_priv_size; /**< Size of buffer private storage */
322 void *dev_private; /**< Per-buffer private storage */
325 /** bufs is one longer than it has to be */
326 struct drm_waitlist {
327 int count; /**< Number of possible buffers */
328 struct drm_buf **bufs; /**< List of pointers to buffers */
329 struct drm_buf **rp; /**< Read pointer */
330 struct drm_buf **wp; /**< Write pointer */
331 struct drm_buf **end; /**< End pointer */
332 spinlock_t read_lock;
333 spinlock_t write_lock;
336 struct drm_freelist {
337 int initialized; /**< Freelist in use */
338 atomic_t count; /**< Number of free buffers */
339 struct drm_buf *next; /**< End pointer */
341 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
342 int low_mark; /**< Low water mark */
343 int high_mark; /**< High water mark */
344 atomic_t wfh; /**< If waiting for high mark */
348 typedef struct drm_dma_handle {
355 * Buffer entry. There is one of this for each buffer size order.
357 struct drm_buf_entry {
358 int buf_size; /**< size */
359 int buf_count; /**< number of buffers */
360 struct drm_buf *buflist; /**< buffer list */
363 struct drm_dma_handle **seglist;
365 struct drm_freelist freelist;
368 /** File private data */
376 unsigned long ioctl_count;
377 struct list_head lhead;
378 struct drm_head *head;
379 int remove_auth_on_close;
380 unsigned long lock_count;
387 atomic_t use_count; /**< Outstanding uses (+1) */
388 atomic_t finalization; /**< Finalization in progress */
389 atomic_t block_count; /**< Count of processes waiting */
390 atomic_t block_read; /**< Queue blocked for reads */
391 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
392 atomic_t block_write; /**< Queue blocked for writes */
393 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
395 atomic_t total_queued; /**< Total queued statistic */
396 atomic_t total_flushed; /**< Total flushes statistic */
397 atomic_t total_locks; /**< Total locks statistics */
399 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
400 struct drm_waitlist waitlist; /**< Pending buffers */
401 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
407 struct drm_lock_data {
408 struct drm_hw_lock *hw_lock; /**< Hardware lock */
409 struct drm_file *file_priv; /**< File descr of lock holder (0=kernel) */
410 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
411 unsigned long lock_time; /**< Time of last lock in jiffies */
413 uint32_t kernel_waiters;
414 uint32_t user_waiters;
421 struct drm_device_dma {
423 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
424 int buf_count; /**< total number of buffers */
425 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
427 int page_count; /**< number of pages */
428 unsigned long *pagelist; /**< page list */
429 unsigned long byte_count;
431 _DRM_DMA_USE_AGP = 0x01,
432 _DRM_DMA_USE_SG = 0x02,
433 _DRM_DMA_USE_FB = 0x04,
434 _DRM_DMA_USE_PCI_RO = 0x08
440 * AGP memory entry. Stored as a doubly linked list.
443 unsigned long handle; /**< handle */
445 unsigned long bound; /**< address */
447 struct list_head head;
453 * \sa drm_agp_init() and drm_device::agp.
455 struct drm_agp_head {
456 DRM_AGP_KERN agp_info; /**< AGP device information */
457 struct list_head memory;
458 unsigned long mode; /**< AGP mode */
459 struct agp_bridge_data *bridge;
460 int enabled; /**< whether the AGP bus as been enabled */
461 int acquired; /**< whether the AGP device has been acquired */
464 int cant_use_aperture;
465 unsigned long page_mask;
469 * Scatter-gather memory.
472 unsigned long handle;
475 struct page **pagelist;
481 struct drm_hw_lock *lock;
487 struct drm_map_list {
488 struct list_head head; /**< list head */
489 struct drm_hash_item hash;
490 struct drm_map *map; /**< mapping */
491 unsigned int user_token;
494 typedef struct drm_map drm_local_map_t;
497 * Context handle list
499 struct drm_ctx_list {
500 struct list_head head; /**< list head */
501 drm_context_t handle; /**< context handle */
502 struct drm_file *tag; /**< associated fd private data */
506 struct list_head head;
507 unsigned int sequence;
509 struct task_struct *task;
512 /* location of GART table */
513 #define DRM_ATI_GART_MAIN 1
514 #define DRM_ATI_GART_FB 2
516 #define DRM_ATI_GART_PCI 1
517 #define DRM_ATI_GART_PCIE 2
518 #define DRM_ATI_GART_IGP 3
520 struct drm_ati_pcigart_info {
521 int gart_table_location;
525 drm_local_map_t mapping;
530 * Generic memory manager structs
533 struct list_head fl_entry;
534 struct list_head ml_entry;
543 struct list_head fl_entry;
544 struct list_head ml_entry;
548 * DRM driver structure. This structure represent the common code for
549 * a family of cards. There will one drm_device for each card present
555 int (*load) (struct drm_device *, unsigned long flags);
556 int (*firstopen) (struct drm_device *);
557 int (*open) (struct drm_device *, struct drm_file *);
558 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
559 void (*postclose) (struct drm_device *, struct drm_file *);
560 void (*lastclose) (struct drm_device *);
561 int (*unload) (struct drm_device *);
562 int (*dma_ioctl) (DRM_IOCTL_ARGS);
563 void (*dma_ready) (struct drm_device *);
564 int (*dma_quiescent) (struct drm_device *);
565 int (*context_ctor) (struct drm_device *dev, int context);
566 int (*context_dtor) (struct drm_device *dev, int context);
567 int (*kernel_context_switch) (struct drm_device *dev, int old,
569 void (*kernel_context_switch_unlock) (struct drm_device *dev);
570 int (*vblank_wait) (struct drm_device *dev, unsigned int *sequence);
571 int (*vblank_wait2) (struct drm_device *dev, unsigned int *sequence);
572 int (*dri_library_name) (struct drm_device *dev, char *buf);
575 * Called by \c drm_device_is_agp. Typically used to determine if a
576 * card is really attached to AGP or not.
578 * \param dev DRM device handle
581 * One of three values is returned depending on whether or not the
582 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
583 * (return of 1), or may or may not be AGP (return of 2).
585 int (*device_is_agp) (struct drm_device *dev);
587 /* these have to be filled in */
589 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
590 void (*irq_preinstall) (struct drm_device *dev);
591 void (*irq_postinstall) (struct drm_device *dev);
592 void (*irq_uninstall) (struct drm_device *dev);
593 void (*reclaim_buffers) (struct drm_device *dev,
594 struct drm_file * file_priv);
595 void (*reclaim_buffers_locked) (struct drm_device *dev,
596 struct drm_file *file_priv);
597 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
598 struct drm_file *file_priv);
599 unsigned long (*get_map_ofs) (struct drm_map * map);
600 unsigned long (*get_reg_ofs) (struct drm_device *dev);
601 void (*set_version) (struct drm_device *dev,
602 struct drm_set_version *sv);
613 drm_ioctl_desc_t *ioctls;
615 struct file_operations fops;
616 struct pci_driver pci_driver;
620 * DRM head structure. This structure represent a video head on a card
621 * that may contain multiple heads. Embed one per head of these in the
622 * private drm_device structure.
625 int minor; /**< Minor device number */
626 struct drm_device *dev;
627 struct proc_dir_entry *dev_root; /**< proc directory entry */
628 dev_t device; /**< Device number for mknod */
629 struct class_device *dev_class;
633 * DRM device structure. This structure represent a complete card that
634 * may contain multiple heads.
637 char *unique; /**< Unique identifier: e.g., busid */
638 int unique_len; /**< Length of unique field */
639 char *devname; /**< For /proc/interrupts */
640 int if_version; /**< Highest interface version set */
642 int blocked; /**< Blocked due to VC switch? */
646 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
647 struct mutex struct_mutex; /**< For others */
650 /** \name Usage Counters */
652 int open_count; /**< Outstanding files open */
653 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
654 atomic_t vma_count; /**< Outstanding vma areas open */
655 int buf_use; /**< Buffers in use -- cannot alloc */
656 atomic_t buf_alloc; /**< Buffer allocation in progress */
659 /** \name Performance counters */
661 unsigned long counters;
662 enum drm_stat_type types[15];
666 /** \name Authentication */
668 struct list_head filelist;
669 struct drm_open_hash magiclist; /**< magic hash table */
670 struct list_head magicfree;
673 /** \name Memory management */
675 struct list_head maplist; /**< Linked list of regions */
676 int map_count; /**< Number of mappable regions */
677 struct drm_open_hash map_hash; /**< User token hash table for maps */
679 /** \name Context handle management */
681 struct list_head ctxlist; /**< Linked list of context handles */
682 int ctx_count; /**< Number of context handles */
683 struct mutex ctxlist_mutex; /**< For ctxlist */
687 struct list_head vmalist; /**< List of vmas (for debugging) */
688 struct drm_lock_data lock; /**< Information on hardware lock */
691 /** \name DMA queues (contexts) */
693 int queue_count; /**< Number of active DMA queues */
694 int queue_reserved; /**< Number of reserved DMA queues */
695 int queue_slots; /**< Actual length of queuelist */
696 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
697 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
700 /** \name Context support */
702 int irq; /**< Interrupt used by board */
703 int irq_enabled; /**< True if irq handler is enabled */
704 __volatile__ long context_flag; /**< Context swapping flag */
705 __volatile__ long interrupt_flag; /**< Interruption handler flag */
706 __volatile__ long dma_flag; /**< DMA dispatch flag */
707 struct timer_list timer; /**< Timer for delaying ctx switch */
708 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
709 int last_checked; /**< Last context checked for DMA */
710 int last_context; /**< Last current context */
711 unsigned long last_switch; /**< jiffies at last context switch */
714 struct work_struct work;
715 /** \name VBLANK IRQ support */
718 wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
719 atomic_t vbl_received;
720 atomic_t vbl_received2; /**< number of secondary VBLANK interrupts */
722 struct list_head vbl_sigs; /**< signal list to send on VBLANK */
723 struct list_head vbl_sigs2; /**< signals to send on secondary VBLANK */
724 unsigned int vbl_pending;
725 spinlock_t tasklet_lock; /**< For drm_locked_tasklet */
726 void (*locked_tasklet_func)(struct drm_device *dev);
732 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
733 wait_queue_head_t buf_readers; /**< Processes waiting to read */
734 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
736 struct drm_agp_head *agp; /**< AGP data */
738 struct pci_dev *pdev; /**< PCI device structure */
739 int pci_vendor; /**< PCI vendor id */
740 int pci_device; /**< PCI device id */
742 struct pci_controller *hose;
744 struct drm_sg_mem *sg; /**< Scatter gather memory */
745 unsigned long *ctx_bitmap; /**< context bitmap */
746 void *dev_private; /**< device private data */
747 struct drm_sigdata sigdata; /**< For block_all_signals */
750 struct drm_driver *driver;
751 drm_local_map_t *agp_buffer_map;
752 unsigned int agp_buffer_token;
753 struct drm_head primary; /**< primary screen head */
755 /** \name Drawable information */
762 static __inline__ int drm_core_check_feature(struct drm_device *dev,
765 return ((dev->driver->driver_features & feature) ? 1 : 0);
769 #define drm_get_pci_domain(dev) dev->hose->index
771 #define drm_get_pci_domain(dev) 0
775 static inline int drm_core_has_AGP(struct drm_device *dev)
777 return drm_core_check_feature(dev, DRIVER_USE_AGP);
780 #define drm_core_has_AGP(dev) (0)
784 static inline int drm_core_has_MTRR(struct drm_device *dev)
786 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
789 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
791 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
794 return mtrr_add(offset, size, flags, 1);
797 static inline int drm_mtrr_del(int handle, unsigned long offset,
798 unsigned long size, unsigned int flags)
800 return mtrr_del(handle, offset, size);
804 #define drm_core_has_MTRR(dev) (0)
806 #define DRM_MTRR_WC 0
808 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
814 static inline int drm_mtrr_del(int handle, unsigned long offset,
815 unsigned long size, unsigned int flags)
821 /******************************************************************/
822 /** \name Internal function definitions */
825 /* Driver support (drm_drv.h) */
826 extern int drm_init(struct drm_driver *driver);
827 extern void drm_exit(struct drm_driver *driver);
828 extern int drm_ioctl(struct inode *inode, struct file *filp,
829 unsigned int cmd, unsigned long arg);
830 extern long drm_compat_ioctl(struct file *filp,
831 unsigned int cmd, unsigned long arg);
832 extern int drm_lastclose(struct drm_device *dev);
834 /* Device support (drm_fops.h) */
835 extern int drm_open(struct inode *inode, struct file *filp);
836 extern int drm_stub_open(struct inode *inode, struct file *filp);
837 extern int drm_fasync(int fd, struct file *filp, int on);
838 extern int drm_release(struct inode *inode, struct file *filp);
840 /* Mapping support (drm_vm.h) */
841 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
842 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
844 /* Memory management support (drm_memory.h) */
845 #include "drm_memory.h"
846 extern void drm_mem_init(void);
847 extern int drm_mem_info(char *buf, char **start, off_t offset,
848 int request, int *eof, void *data);
849 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
851 extern DRM_AGP_MEM *drm_alloc_agp(struct drm_device *dev, int pages, u32 type);
852 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
853 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
854 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
856 /* Misc. IOCTL support (drm_ioctl.h) */
857 extern int drm_irq_by_busid(struct inode *inode, struct drm_file *file_priv,
858 unsigned int cmd, unsigned long arg);
859 extern int drm_getunique(struct inode *inode, struct drm_file *file_priv,
860 unsigned int cmd, unsigned long arg);
861 extern int drm_setunique(struct inode *inode, struct drm_file *file_priv,
862 unsigned int cmd, unsigned long arg);
863 extern int drm_getmap(struct inode *inode, struct drm_file *file_priv,
864 unsigned int cmd, unsigned long arg);
865 extern int drm_getclient(struct inode *inode, struct drm_file *file_priv,
866 unsigned int cmd, unsigned long arg);
867 extern int drm_getstats(struct inode *inode, struct drm_file *file_priv,
868 unsigned int cmd, unsigned long arg);
869 extern int drm_setversion(struct inode *inode, struct drm_file *file_priv,
870 unsigned int cmd, unsigned long arg);
871 extern int drm_noop(struct inode *inode, struct drm_file *file_priv,
872 unsigned int cmd, unsigned long arg);
874 /* Context IOCTL support (drm_context.h) */
875 extern int drm_resctx(struct inode *inode, struct drm_file *file_priv,
876 unsigned int cmd, unsigned long arg);
877 extern int drm_addctx(struct inode *inode, struct drm_file *file_priv,
878 unsigned int cmd, unsigned long arg);
879 extern int drm_modctx(struct inode *inode, struct drm_file *file_priv,
880 unsigned int cmd, unsigned long arg);
881 extern int drm_getctx(struct inode *inode, struct drm_file *file_priv,
882 unsigned int cmd, unsigned long arg);
883 extern int drm_switchctx(struct inode *inode, struct drm_file *file_priv,
884 unsigned int cmd, unsigned long arg);
885 extern int drm_newctx(struct inode *inode, struct drm_file *file_priv,
886 unsigned int cmd, unsigned long arg);
887 extern int drm_rmctx(struct inode *inode, struct drm_file *file_priv,
888 unsigned int cmd, unsigned long arg);
890 extern int drm_ctxbitmap_init(struct drm_device *dev);
891 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
892 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
894 extern int drm_setsareactx(struct inode *inode, struct drm_file *file_priv,
895 unsigned int cmd, unsigned long arg);
896 extern int drm_getsareactx(struct inode *inode, struct drm_file *file_priv,
897 unsigned int cmd, unsigned long arg);
899 /* Drawable IOCTL support (drm_drawable.h) */
900 extern int drm_adddraw(struct inode *inode, struct drm_file *file_priv,
901 unsigned int cmd, unsigned long arg);
902 extern int drm_rmdraw(struct inode *inode, struct drm_file *file_priv,
903 unsigned int cmd, unsigned long arg);
904 extern int drm_update_drawable_info(struct inode *inode, struct drm_file *file_priv,
905 unsigned int cmd, unsigned long arg);
906 extern struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
908 extern void drm_drawable_free_all(struct drm_device *dev);
910 /* Authentication IOCTL support (drm_auth.h) */
911 extern int drm_getmagic(struct inode *inode, struct drm_file *file_priv,
912 unsigned int cmd, unsigned long arg);
913 extern int drm_authmagic(struct inode *inode, struct drm_file *file_priv,
914 unsigned int cmd, unsigned long arg);
916 /* Locking IOCTL support (drm_lock.h) */
917 extern int drm_lock(struct inode *inode, struct drm_file *file_priv,
918 unsigned int cmd, unsigned long arg);
919 extern int drm_unlock(struct inode *inode, struct drm_file *file_priv,
920 unsigned int cmd, unsigned long arg);
921 extern int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
922 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
923 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
924 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
927 * These are exported to drivers so that they can implement fencing using
928 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
931 extern int drm_i_have_hw_lock(struct drm_file *file_priv);
933 /* Buffer management support (drm_bufs.h) */
934 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
935 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
936 extern int drm_addmap(struct drm_device *dev, unsigned int offset,
937 unsigned int size, enum drm_map_type type,
938 enum drm_map_flags flags, drm_local_map_t ** map_ptr);
939 extern int drm_addmap_ioctl(struct inode *inode, struct drm_file *file_priv,
940 unsigned int cmd, unsigned long arg);
941 extern int drm_rmmap(struct drm_device *dev, drm_local_map_t * map);
942 extern int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t * map);
943 extern int drm_rmmap_ioctl(struct inode *inode, struct drm_file *file_priv,
944 unsigned int cmd, unsigned long arg);
946 extern int drm_order(unsigned long size);
947 extern int drm_addbufs(struct inode *inode, struct drm_file *file_priv,
948 unsigned int cmd, unsigned long arg);
949 extern int drm_infobufs(struct inode *inode, struct drm_file *file_priv,
950 unsigned int cmd, unsigned long arg);
951 extern int drm_markbufs(struct inode *inode, struct drm_file *file_priv,
952 unsigned int cmd, unsigned long arg);
953 extern int drm_freebufs(struct inode *inode, struct drm_file *file_priv,
954 unsigned int cmd, unsigned long arg);
955 extern int drm_mapbufs(struct inode *inode, struct drm_file *file_priv,
956 unsigned int cmd, unsigned long arg);
957 extern unsigned long drm_get_resource_start(struct drm_device *dev,
958 unsigned int resource);
959 extern unsigned long drm_get_resource_len(struct drm_device *dev,
960 unsigned int resource);
962 /* DMA support (drm_dma.h) */
963 extern int drm_dma_setup(struct drm_device *dev);
964 extern void drm_dma_takedown(struct drm_device *dev);
965 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
966 extern void drm_core_reclaim_buffers(struct drm_device *dev,
967 struct drm_file *filp);
969 /* IRQ support (drm_irq.h) */
970 extern int drm_control(struct inode *inode, struct drm_file *file_priv,
971 unsigned int cmd, unsigned long arg);
972 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
973 extern int drm_irq_uninstall(struct drm_device *dev);
974 extern void drm_driver_irq_preinstall(struct drm_device *dev);
975 extern void drm_driver_irq_postinstall(struct drm_device *dev);
976 extern void drm_driver_irq_uninstall(struct drm_device *dev);
978 extern int drm_wait_vblank(struct inode *inode, struct drm_file *file_priv,
979 unsigned int cmd, unsigned long arg);
980 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
981 extern void drm_vbl_send_signals(struct drm_device *dev);
982 extern void drm_locked_tasklet(struct drm_device *dev, void(*func)(struct drm_device*));
984 /* AGP/GART support (drm_agpsupport.h) */
985 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
986 extern int drm_agp_acquire(struct drm_device *dev);
987 extern int drm_agp_acquire_ioctl(struct inode *inode, struct drm_file *file_priv,
988 unsigned int cmd, unsigned long arg);
989 extern int drm_agp_release(struct drm_device *dev);
990 extern int drm_agp_release_ioctl(struct inode *inode, struct drm_file *file_priv,
991 unsigned int cmd, unsigned long arg);
992 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
993 extern int drm_agp_enable_ioctl(struct inode *inode, struct drm_file *file_priv,
994 unsigned int cmd, unsigned long arg);
995 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info * info);
996 extern int drm_agp_info_ioctl(struct inode *inode, struct drm_file *file_priv,
997 unsigned int cmd, unsigned long arg);
998 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
999 extern int drm_agp_alloc_ioctl(struct inode *inode, struct drm_file *file_priv,
1000 unsigned int cmd, unsigned long arg);
1001 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1002 extern int drm_agp_free_ioctl(struct inode *inode, struct drm_file *file_priv,
1003 unsigned int cmd, unsigned long arg);
1004 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1005 extern int drm_agp_unbind_ioctl(struct inode *inode, struct drm_file *file_priv,
1006 unsigned int cmd, unsigned long arg);
1007 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1008 extern int drm_agp_bind_ioctl(struct inode *inode, struct drm_file *file_priv,
1009 unsigned int cmd, unsigned long arg);
1010 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge,
1011 size_t pages, u32 type);
1012 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1013 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1014 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1016 /* Stub support (drm_stub.h) */
1017 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1018 struct drm_driver *driver);
1019 extern int drm_put_dev(struct drm_device *dev);
1020 extern int drm_put_head(struct drm_head *head);
1021 extern unsigned int drm_debug;
1022 extern unsigned int drm_cards_limit;
1023 extern struct drm_head **drm_heads;
1024 extern struct class *drm_class;
1025 extern struct proc_dir_entry *drm_proc_root;
1027 extern drm_local_map_t *drm_getsarea(struct drm_device *dev);
1029 /* Proc support (drm_proc.h) */
1030 extern int drm_proc_init(struct drm_device *dev,
1032 struct proc_dir_entry *root,
1033 struct proc_dir_entry **dev_root);
1034 extern int drm_proc_cleanup(int minor,
1035 struct proc_dir_entry *root,
1036 struct proc_dir_entry *dev_root);
1038 /* Scatter Gather Support (drm_scatter.h) */
1039 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1040 extern int drm_sg_alloc(struct inode *inode, struct drm_file *file_priv,
1041 unsigned int cmd, unsigned long arg);
1042 extern int drm_sg_free(struct inode *inode, struct drm_file *file_priv,
1043 unsigned int cmd, unsigned long arg);
1045 /* ATI PCIGART support (ati_pcigart.h) */
1046 extern int drm_ati_pcigart_init(struct drm_device *dev,
1047 struct drm_ati_pcigart_info * gart_info);
1048 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1049 struct drm_ati_pcigart_info * gart_info);
1051 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1052 size_t align, dma_addr_t maxaddr);
1053 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1054 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1056 /* sysfs support (drm_sysfs.c) */
1057 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1058 extern void drm_sysfs_destroy(struct class *cs);
1059 extern struct class_device *drm_sysfs_device_add(struct class *cs,
1060 struct drm_head *head);
1061 extern void drm_sysfs_device_remove(struct class_device *class_dev);
1064 * Basic memory manager support (drm_mm.c)
1066 extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node * parent,
1068 unsigned alignment);
1069 void drm_mm_put_block(struct drm_mm_node * cur);
1070 extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, unsigned long size,
1071 unsigned alignment, int best_match);
1072 extern int drm_mm_init(struct drm_mm *mm, unsigned long start, unsigned long size);
1073 extern void drm_mm_takedown(struct drm_mm *mm);
1074 extern int drm_mm_clean(struct drm_mm *mm);
1075 extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
1076 extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, unsigned long size);
1077 extern int drm_mm_add_space_to_tail(struct drm_mm *mm, unsigned long size);
1079 extern void drm_core_ioremap(struct drm_map *map, struct drm_device *dev);
1080 extern void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev);
1082 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev,
1085 struct drm_map_list *_entry;
1086 list_for_each_entry(_entry, &dev->maplist, head)
1087 if (_entry->user_token == token)
1092 static __inline__ int drm_device_is_agp(struct drm_device *dev)
1094 if (dev->driver->device_is_agp != NULL) {
1095 int err = (*dev->driver->device_is_agp) (dev);
1102 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1105 static __inline__ int drm_device_is_pcie(struct drm_device *dev)
1107 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1110 static __inline__ void drm_core_dropmap(struct drm_map *map)
1114 #ifndef DEBUG_MEMORY
1115 /** Wrapper around kmalloc() */
1116 static __inline__ void *drm_alloc(size_t size, int area)
1118 return kmalloc(size, GFP_KERNEL);
1121 /** Wrapper around kfree() */
1122 static __inline__ void drm_free(void *pt, size_t size, int area)
1127 /** Wrapper around kcalloc() */
1128 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1130 return kcalloc(nmemb, size, GFP_KERNEL);
1133 extern void *drm_alloc(size_t size, int area);
1134 extern void drm_free(void *pt, size_t size, int area);
1135 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1140 extern unsigned long drm_core_get_map_ofs(struct drm_map * map);
1141 extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
1143 #endif /* __KERNEL__ */