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drm: remove version.h and any version checks..
[linux/fpc-iii.git] / drivers / char / drm / drmP.h
blob6f98701dfe15da844eb19aa5e1483f6b73b21a97
1 /**
2 * \file drmP.h
3 * Private header for Direct Rendering Manager
4 *
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
7 */
8
9 /*
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * All rights reserved.
13 *
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:
20 *
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
23 * Software.
24 *
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.
32 */
33
34 #ifndef _DRM_P_H_
35 #define _DRM_P_H_
36
37 /* If you want the memory alloc debug functionality, change define below */
38 /* #define DEBUG_MEMORY */
39
40 #ifdef __KERNEL__
41 #ifdef __alpha__
42 /* add include of current.h so that "current" is defined
43 * before static inline funcs in wait.h. Doing this so we
44 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
45 #include <asm/current.h>
46 #endif /* __alpha__ */
47 #include <linux/config.h>
48 #include <linux/module.h>
49 #include <linux/kernel.h>
50 #include <linux/miscdevice.h>
51 #include <linux/fs.h>
52 #include <linux/proc_fs.h>
53 #include <linux/init.h>
54 #include <linux/file.h>
55 #include <linux/pci.h>
56 #include <linux/jiffies.h>
57 #include <linux/smp_lock.h> /* For (un)lock_kernel */
58 #include <linux/mm.h>
59 #include <linux/cdev.h>
60 #if defined(__alpha__) || defined(__powerpc__)
61 #include <asm/pgtable.h> /* For pte_wrprotect */
62 #endif
63 #include <asm/io.h>
64 #include <asm/mman.h>
65 #include <asm/uaccess.h>
66 #ifdef CONFIG_MTRR
67 #include <asm/mtrr.h>
68 #endif
69 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
70 #include <linux/types.h>
71 #include <linux/agp_backend.h>
72 #endif
73 #include <linux/workqueue.h>
74 #include <linux/poll.h>
75 #include <asm/pgalloc.h>
76 #include "drm.h"
77
78 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
79 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
80
81 #include "drm_os_linux.h"
82
83 /***********************************************************************/
84 /** \name DRM template customization defaults */
85 /*@{*/
86
87 /* driver capabilities and requirements mask */
88 #define DRIVER_USE_AGP 0x1
89 #define DRIVER_REQUIRE_AGP 0x2
90 #define DRIVER_USE_MTRR 0x4
91 #define DRIVER_PCI_DMA 0x8
92 #define DRIVER_SG 0x10
93 #define DRIVER_HAVE_DMA 0x20
94 #define DRIVER_HAVE_IRQ 0x40
95 #define DRIVER_IRQ_SHARED 0x80
96 #define DRIVER_IRQ_VBL 0x100
97 #define DRIVER_DMA_QUEUE 0x200
98 #define DRIVER_FB_DMA 0x400
99
100 /***********************************************************************/
101 /** \name Begin the DRM... */
102 /*@{*/
103
104 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
105 also include looping detection. */
106
107 #define DRM_HASH_SIZE 16 /**< Size of key hash table. Must be power of 2. */
108 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
109 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
110 #define DRM_LOOPING_LIMIT 5000000
111 #define DRM_BSZ 1024 /**< Buffer size for /dev/drm? output */
112 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
113 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
114
115 #define DRM_FLAG_DEBUG 0x01
116
117 #define DRM_MEM_DMA 0
118 #define DRM_MEM_SAREA 1
119 #define DRM_MEM_DRIVER 2
120 #define DRM_MEM_MAGIC 3
121 #define DRM_MEM_IOCTLS 4
122 #define DRM_MEM_MAPS 5
123 #define DRM_MEM_VMAS 6
124 #define DRM_MEM_BUFS 7
125 #define DRM_MEM_SEGS 8
126 #define DRM_MEM_PAGES 9
127 #define DRM_MEM_FILES 10
128 #define DRM_MEM_QUEUES 11
129 #define DRM_MEM_CMDS 12
130 #define DRM_MEM_MAPPINGS 13
131 #define DRM_MEM_BUFLISTS 14
132 #define DRM_MEM_AGPLISTS 15
133 #define DRM_MEM_TOTALAGP 16
134 #define DRM_MEM_BOUNDAGP 17
135 #define DRM_MEM_CTXBITMAP 18
136 #define DRM_MEM_STUB 19
137 #define DRM_MEM_SGLISTS 20
138 #define DRM_MEM_CTXLIST 21
139
140 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
141
142 /*@}*/
143
144
145 /***********************************************************************/
146 /** \name Backward compatibility section */
147 /*@{*/
148
149 #ifndef MODULE_LICENSE
150 #define MODULE_LICENSE(x)
151 #endif
152
153 #ifndef preempt_disable
154 #define preempt_disable()
155 #define preempt_enable()
156 #endif
157
158 #ifndef pte_offset_map
159 #define pte_offset_map pte_offset
160 #define pte_unmap(pte)
161 #endif
162
163 #define DRM_RPR_ARG(vma) vma,
164
165 #define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
166
167 /*@}*/
168
169
170 /***********************************************************************/
171 /** \name Macros to make printk easier */
172 /*@{*/
173
174 /**
175 * Error output.
176 *
177 * \param fmt printf() like format string.
178 * \param arg arguments
179 */
180 #define DRM_ERROR(fmt, arg...) \
181 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg)
182
183 /**
184 * Memory error output.
185 *
186 * \param area memory area where the error occurred.
187 * \param fmt printf() like format string.
188 * \param arg arguments
189 */
190 #define DRM_MEM_ERROR(area, fmt, arg...) \
191 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \
192 drm_mem_stats[area].name , ##arg)
193
194 #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
195
196 /**
197 * Debug output.
198 *
199 * \param fmt printf() like format string.
200 * \param arg arguments
201 */
202 #if DRM_DEBUG_CODE
203 #define DRM_DEBUG(fmt, arg...) \
204 do { \
205 if ( drm_debug ) \
206 printk(KERN_DEBUG \
207 "[" DRM_NAME ":%s] " fmt , \
208 __FUNCTION__ , ##arg); \
209 } while (0)
210 #else
211 #define DRM_DEBUG(fmt, arg...) do { } while (0)
212 #endif
213
214 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
215
216 #define DRM_PROC_PRINT(fmt, arg...) \
217 len += sprintf(&buf[len], fmt , ##arg); \
218 if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
219
220 #define DRM_PROC_PRINT_RET(ret, fmt, arg...) \
221 len += sprintf(&buf[len], fmt , ##arg); \
222 if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
223
224 /*@}*/
225
226
227 /***********************************************************************/
228 /** \name Internal types and structures */
229 /*@{*/
230
231 #define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
232 #define DRM_MIN(a,b) ((a)<(b)?(a):(b))
233 #define DRM_MAX(a,b) ((a)>(b)?(a):(b))
234
235 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
236 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
237 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
238
239 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
240 /**
241 * Get the private SAREA mapping.
242 *
243 * \param _dev DRM device.
244 * \param _ctx context number.
245 * \param _map output mapping.
246 */
247 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \
248 (_map) = (_dev)->context_sareas[_ctx]; \
249 } while(0)
250
251 /**
252 * Test that the hardware lock is held by the caller, returning otherwise.
253 *
254 * \param dev DRM device.
255 * \param filp file pointer of the caller.
256 */
257 #define LOCK_TEST_WITH_RETURN( dev, filp ) \
258 do { \
259 if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) || \
260 dev->lock.filp != filp ) { \
261 DRM_ERROR( "%s called without lock held\n", \
262 __FUNCTION__ ); \
263 return -EINVAL; \
264 } \
265 } while (0)
266
267 /**
268 * Copy and IOCTL return string to user space
269 */
270 #define DRM_COPY( name, value ) \
271 len = strlen( value ); \
272 if ( len > name##_len ) len = name##_len; \
273 name##_len = strlen( value ); \
274 if ( len && name ) { \
275 if ( copy_to_user( name, value, len ) ) \
276 return -EFAULT; \
277 }
278
279 /**
280 * Ioctl function type.
281 *
282 * \param inode device inode.
283 * \param filp file pointer.
284 * \param cmd command.
285 * \param arg argument.
286 */
287 typedef int drm_ioctl_t( struct inode *inode, struct file *filp,
288 unsigned int cmd, unsigned long arg );
289
290 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
291 unsigned long arg);
292
293 typedef struct drm_ioctl_desc {
294 drm_ioctl_t *func;
295 int auth_needed;
296 int root_only;
297 } drm_ioctl_desc_t;
298
299 typedef struct drm_devstate {
300 pid_t owner; /**< X server pid holding x_lock */
301 } drm_devstate_t;
302
303 typedef struct drm_magic_entry {
304 drm_magic_t magic;
305 struct drm_file *priv;
306 struct drm_magic_entry *next;
307 } drm_magic_entry_t;
308
309 typedef struct drm_magic_head {
310 struct drm_magic_entry *head;
311 struct drm_magic_entry *tail;
312 } drm_magic_head_t;
313
314 typedef struct drm_vma_entry {
315 struct vm_area_struct *vma;
316 struct drm_vma_entry *next;
317 pid_t pid;
318 } drm_vma_entry_t;
319
320 /**
321 * DMA buffer.
322 */
323 typedef struct drm_buf {
324 int idx; /**< Index into master buflist */
325 int total; /**< Buffer size */
326 int order; /**< log-base-2(total) */
327 int used; /**< Amount of buffer in use (for DMA) */
328 unsigned long offset; /**< Byte offset (used internally) */
329 void *address; /**< Address of buffer */
330 unsigned long bus_address; /**< Bus address of buffer */
331 struct drm_buf *next; /**< Kernel-only: used for free list */
332 __volatile__ int waiting; /**< On kernel DMA queue */
333 __volatile__ int pending; /**< On hardware DMA queue */
334 wait_queue_head_t dma_wait; /**< Processes waiting */
335 struct file *filp; /**< Pointer to holding file descr */
336 int context; /**< Kernel queue for this buffer */
337 int while_locked;/**< Dispatch this buffer while locked */
338 enum {
339 DRM_LIST_NONE = 0,
340 DRM_LIST_FREE = 1,
341 DRM_LIST_WAIT = 2,
342 DRM_LIST_PEND = 3,
343 DRM_LIST_PRIO = 4,
344 DRM_LIST_RECLAIM = 5
345 } list; /**< Which list we're on */
346
347 int dev_priv_size; /**< Size of buffer private storage */
348 void *dev_private; /**< Per-buffer private storage */
349 } drm_buf_t;
350
351
352 /** bufs is one longer than it has to be */
353 typedef struct drm_waitlist {
354 int count; /**< Number of possible buffers */
355 drm_buf_t **bufs; /**< List of pointers to buffers */
356 drm_buf_t **rp; /**< Read pointer */
357 drm_buf_t **wp; /**< Write pointer */
358 drm_buf_t **end; /**< End pointer */
359 spinlock_t read_lock;
360 spinlock_t write_lock;
361 } drm_waitlist_t;
362
363 typedef struct drm_freelist {
364 int initialized; /**< Freelist in use */
365 atomic_t count; /**< Number of free buffers */
366 drm_buf_t *next; /**< End pointer */
367
368 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
369 int low_mark; /**< Low water mark */
370 int high_mark; /**< High water mark */
371 atomic_t wfh; /**< If waiting for high mark */
372 spinlock_t lock;
373 } drm_freelist_t;
374
375 /**
376 * Buffer entry. There is one of this for each buffer size order.
377 */
378 typedef struct drm_buf_entry {
379 int buf_size; /**< size */
380 int buf_count; /**< number of buffers */
381 drm_buf_t *buflist; /**< buffer list */
382 int seg_count;
383 int page_order;
384 unsigned long *seglist;
385
386 drm_freelist_t freelist;
387 } drm_buf_entry_t;
388
389 /** File private data */
390 typedef struct drm_file {
391 int authenticated;
392 int minor;
393 pid_t pid;
394 uid_t uid;
395 drm_magic_t magic;
396 unsigned long ioctl_count;
397 struct drm_file *next;
398 struct drm_file *prev;
399 struct drm_head *head;
400 int remove_auth_on_close;
401 unsigned long lock_count;
402 void *driver_priv;
403 } drm_file_t;
404
405 /** Wait queue */
406 typedef struct drm_queue {
407 atomic_t use_count; /**< Outstanding uses (+1) */
408 atomic_t finalization; /**< Finalization in progress */
409 atomic_t block_count; /**< Count of processes waiting */
410 atomic_t block_read; /**< Queue blocked for reads */
411 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
412 atomic_t block_write; /**< Queue blocked for writes */
413 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
414 #if 1
415 atomic_t total_queued; /**< Total queued statistic */
416 atomic_t total_flushed;/**< Total flushes statistic */
417 atomic_t total_locks; /**< Total locks statistics */
418 #endif
419 drm_ctx_flags_t flags; /**< Context preserving and 2D-only */
420 drm_waitlist_t waitlist; /**< Pending buffers */
421 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
422 } drm_queue_t;
423
424 /**
425 * Lock data.
426 */
427 typedef struct drm_lock_data {
428 drm_hw_lock_t *hw_lock; /**< Hardware lock */
429 struct file *filp; /**< File descr of lock holder (0=kernel) */
430 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
431 unsigned long lock_time; /**< Time of last lock in jiffies */
432 } drm_lock_data_t;
433
434 /**
435 * DMA data.
436 */
437 typedef struct drm_device_dma {
438
439 drm_buf_entry_t bufs[DRM_MAX_ORDER+1]; /**< buffers, grouped by their size order */
440 int buf_count; /**< total number of buffers */
441 drm_buf_t **buflist; /**< Vector of pointers into drm_device_dma::bufs */
442 int seg_count;
443 int page_count; /**< number of pages */
444 unsigned long *pagelist; /**< page list */
445 unsigned long byte_count;
446 enum {
447 _DRM_DMA_USE_AGP = 0x01,
448 _DRM_DMA_USE_SG = 0x02,
449 _DRM_DMA_USE_FB = 0x04
450 } flags;
451
452 } drm_device_dma_t;
453
454 /**
455 * AGP memory entry. Stored as a doubly linked list.
456 */
457 typedef struct drm_agp_mem {
458 unsigned long handle; /**< handle */
459 DRM_AGP_MEM *memory;
460 unsigned long bound; /**< address */
461 int pages;
462 struct drm_agp_mem *prev; /**< previous entry */
463 struct drm_agp_mem *next; /**< next entry */
464 } drm_agp_mem_t;
465
466 /**
467 * AGP data.
468 *
469 * \sa drm_agp_init() and drm_device::agp.
470 */
471 typedef struct drm_agp_head {
472 DRM_AGP_KERN agp_info; /**< AGP device information */
473 drm_agp_mem_t *memory; /**< memory entries */
474 unsigned long mode; /**< AGP mode */
475 struct agp_bridge_data *bridge;
476 int enabled; /**< whether the AGP bus as been enabled */
477 int acquired; /**< whether the AGP device has been acquired */
478 unsigned long base;
479 int agp_mtrr;
480 int cant_use_aperture;
481 unsigned long page_mask;
482 } drm_agp_head_t;
483
484 /**
485 * Scatter-gather memory.
486 */
487 typedef struct drm_sg_mem {
488 unsigned long handle;
489 void *virtual;
490 int pages;
491 struct page **pagelist;
492 dma_addr_t *busaddr;
493 } drm_sg_mem_t;
494
495 typedef struct drm_sigdata {
496 int context;
497 drm_hw_lock_t *lock;
498 } drm_sigdata_t;
499
500 typedef struct drm_dma_handle {
501 dma_addr_t busaddr;
502 void *vaddr;
503 size_t size;
504 } drm_dma_handle_t;
505
506 /**
507 * Mappings list
508 */
509 typedef struct drm_map_list {
510 struct list_head head; /**< list head */
511 drm_map_t *map; /**< mapping */
512 unsigned int user_token;
513 } drm_map_list_t;
514
515 typedef drm_map_t drm_local_map_t;
516
517 /**
518 * Context handle list
519 */
520 typedef struct drm_ctx_list {
521 struct list_head head; /**< list head */
522 drm_context_t handle; /**< context handle */
523 drm_file_t *tag; /**< associated fd private data */
524 } drm_ctx_list_t;
525
526
527 typedef struct drm_vbl_sig {
528 struct list_head head;
529 unsigned int sequence;
530 struct siginfo info;
531 struct task_struct *task;
532 } drm_vbl_sig_t;
533
534
535 /**
536 * DRM driver structure. This structure represent the common code for
537 * a family of cards. There will one drm_device for each card present
538 * in this family
539 */
540 struct drm_device;
541
542 struct drm_driver {
543 int (*preinit)(struct drm_device *, unsigned long flags);
544 void (*prerelease)(struct drm_device *, struct file *filp);
545 void (*pretakedown)(struct drm_device *);
546 int (*postcleanup)(struct drm_device *);
547 int (*presetup)(struct drm_device *);
548 int (*postsetup)(struct drm_device *);
549 int (*dma_ioctl)( DRM_IOCTL_ARGS );
550 int (*open_helper)(struct drm_device *, drm_file_t *);
551 void (*free_filp_priv)(struct drm_device *, drm_file_t *);
552 void (*release)(struct drm_device *, struct file *filp);
553 void (*dma_ready)(struct drm_device *);
554 int (*dma_quiescent)(struct drm_device *);
555 int (*context_ctor)(struct drm_device *dev, int context);
556 int (*context_dtor)(struct drm_device *dev, int context);
557 int (*kernel_context_switch)(struct drm_device *dev, int old, int new);
558 void (*kernel_context_switch_unlock)(struct drm_device *dev, drm_lock_t *lock);
559 int (*vblank_wait)(struct drm_device *dev, unsigned int *sequence);
560
561 /**
562 * Called by \c drm_device_is_agp. Typically used to determine if a
563 * card is really attached to AGP or not.
564 *
565 * \param dev DRM device handle
566 *
567 * \returns
568 * One of three values is returned depending on whether or not the
569 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
570 * (return of 1), or may or may not be AGP (return of 2).
571 */
572 int (*device_is_agp) (struct drm_device * dev);
573
574 /* these have to be filled in */
575
576 int (*postinit)(struct drm_device *, unsigned long flags);
577 irqreturn_t (*irq_handler)( DRM_IRQ_ARGS );
578 void (*irq_preinstall)(struct drm_device *dev);
579 void (*irq_postinstall)(struct drm_device *dev);
580 void (*irq_uninstall)(struct drm_device *dev);
581 void (*reclaim_buffers)(struct drm_device *dev, struct file *filp);
582 unsigned long (*get_map_ofs)(drm_map_t *map);
583 unsigned long (*get_reg_ofs)(struct drm_device *dev);
584 void (*set_version)(struct drm_device *dev, drm_set_version_t *sv);
585 int (*version)(drm_version_t *version);
586 u32 driver_features;
587 int dev_priv_size;
588 drm_ioctl_desc_t *ioctls;
589 int num_ioctls;
590 struct file_operations fops;
591 struct pci_driver pci_driver;
592 };
593
594 /**
595 * DRM head structure. This structure represent a video head on a card
596 * that may contain multiple heads. Embed one per head of these in the
597 * private drm_device structure.
598 */
599 typedef struct drm_head {
600 int minor; /**< Minor device number */
601 struct drm_device *dev;
602 struct proc_dir_entry *dev_root; /**< proc directory entry */
603 dev_t device; /**< Device number for mknod */
604 struct class_device *dev_class;
605 } drm_head_t;
606
607 /**
608 * DRM device structure. This structure represent a complete card that
609 * may contain multiple heads.
610 */
611 typedef struct drm_device {
612 char *unique; /**< Unique identifier: e.g., busid */
613 int unique_len; /**< Length of unique field */
614 char *devname; /**< For /proc/interrupts */
615 int if_version; /**< Highest interface version set */
616
617 int blocked; /**< Blocked due to VC switch? */
618
619 /** \name Locks */
620 /*@{*/
621 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
622 struct semaphore struct_sem; /**< For others */
623 /*@}*/
624
625 /** \name Usage Counters */
626 /*@{*/
627 int open_count; /**< Outstanding files open */
628 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
629 atomic_t vma_count; /**< Outstanding vma areas open */
630 int buf_use; /**< Buffers in use -- cannot alloc */
631 atomic_t buf_alloc; /**< Buffer allocation in progress */
632 /*@}*/
633
634 /** \name Performance counters */
635 /*@{*/
636 unsigned long counters;
637 drm_stat_type_t types[15];
638 atomic_t counts[15];
639 /*@}*/
640
641 /** \name Authentication */
642 /*@{*/
643 drm_file_t *file_first; /**< file list head */
644 drm_file_t *file_last; /**< file list tail */
645 drm_magic_head_t magiclist[DRM_HASH_SIZE]; /**< magic hash table */
646 /*@}*/
647
648 /** \name Memory management */
649 /*@{*/
650 drm_map_list_t *maplist; /**< Linked list of regions */
651 int map_count; /**< Number of mappable regions */
652
653 /** \name Context handle management */
654 /*@{*/
655 drm_ctx_list_t *ctxlist; /**< Linked list of context handles */
656 int ctx_count; /**< Number of context handles */
657 struct semaphore ctxlist_sem; /**< For ctxlist */
658
659 drm_map_t **context_sareas; /**< per-context SAREA's */
660 int max_context;
661
662 drm_vma_entry_t *vmalist; /**< List of vmas (for debugging) */
663 drm_lock_data_t lock; /**< Information on hardware lock */
664 /*@}*/
665
666 /** \name DMA queues (contexts) */
667 /*@{*/
668 int queue_count; /**< Number of active DMA queues */
669 int queue_reserved; /**< Number of reserved DMA queues */
670 int queue_slots; /**< Actual length of queuelist */
671 drm_queue_t **queuelist; /**< Vector of pointers to DMA queues */
672 drm_device_dma_t *dma; /**< Optional pointer for DMA support */
673 /*@}*/
674
675 /** \name Context support */
676 /*@{*/
677 int irq; /**< Interrupt used by board */
678 int irq_enabled; /**< True if irq handler is enabled */
679 __volatile__ long context_flag; /**< Context swapping flag */
680 __volatile__ long interrupt_flag; /**< Interruption handler flag */
681 __volatile__ long dma_flag; /**< DMA dispatch flag */
682 struct timer_list timer; /**< Timer for delaying ctx switch */
683 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
684 int last_checked; /**< Last context checked for DMA */
685 int last_context; /**< Last current context */
686 unsigned long last_switch; /**< jiffies at last context switch */
687 /*@}*/
688
689 struct work_struct work;
690 /** \name VBLANK IRQ support */
691 /*@{*/
692
693 wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
694 atomic_t vbl_received;
695 spinlock_t vbl_lock;
696 drm_vbl_sig_t vbl_sigs; /**< signal list to send on VBLANK */
697 unsigned int vbl_pending;
698
699 /*@}*/
700 cycles_t ctx_start;
701 cycles_t lck_start;
702
703 char buf[DRM_BSZ]; /**< Output buffer */
704 char *buf_rp; /**< Read pointer */
705 char *buf_wp; /**< Write pointer */
706 char *buf_end; /**< End pointer */
707 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
708 wait_queue_head_t buf_readers; /**< Processes waiting to read */
709 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
710
711 drm_agp_head_t *agp; /**< AGP data */
712
713 struct pci_dev *pdev; /**< PCI device structure */
714 int pci_domain; /**< PCI bus domain number */
715 int pci_bus; /**< PCI bus number */
716 int pci_slot; /**< PCI slot number */
717 int pci_func; /**< PCI function number */
718 #ifdef __alpha__
719 struct pci_controller *hose;
720 #endif
721 drm_sg_mem_t *sg; /**< Scatter gather memory */
722 unsigned long *ctx_bitmap; /**< context bitmap */
723 void *dev_private; /**< device private data */
724 drm_sigdata_t sigdata; /**< For block_all_signals */
725 sigset_t sigmask;
726
727 struct drm_driver *driver;
728 drm_local_map_t *agp_buffer_map;
729 unsigned int agp_buffer_token;
730 drm_head_t primary; /**< primary screen head */
731 } drm_device_t;
732
733 static __inline__ int drm_core_check_feature(struct drm_device *dev, int feature)
734 {
735 return ((dev->driver->driver_features & feature) ? 1 : 0);
736 }
737
738 #if __OS_HAS_AGP
739 static inline int drm_core_has_AGP(struct drm_device *dev)
740 {
741 return drm_core_check_feature(dev, DRIVER_USE_AGP);
742 }
743 #else
744 #define drm_core_has_AGP(dev) (0)
745 #endif
746
747 #if __OS_HAS_MTRR
748 static inline int drm_core_has_MTRR(struct drm_device *dev)
749 {
750 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
751 }
752 #else
753 #define drm_core_has_MTRR(dev) (0)
754 #endif
755
756 /******************************************************************/
757 /** \name Internal function definitions */
758 /*@{*/
759
760 /* Misc. support (drm_init.h) */
761 extern int drm_flags;
762 extern void drm_parse_options( char *s );
763 extern int drm_cpu_valid( void );
764
765 /* Driver support (drm_drv.h) */
766 extern int drm_init(struct drm_driver *driver);
767 extern void drm_exit(struct drm_driver *driver);
768 extern int drm_ioctl(struct inode *inode, struct file *filp,
769 unsigned int cmd, unsigned long arg);
770 extern long drm_compat_ioctl(struct file *filp,
771 unsigned int cmd, unsigned long arg);
772 extern int drm_takedown(drm_device_t * dev);
773
774 /* Device support (drm_fops.h) */
775 extern int drm_open(struct inode *inode, struct file *filp);
776 extern int drm_stub_open(struct inode *inode, struct file *filp);
777 extern int drm_flush(struct file *filp);
778 extern int drm_fasync(int fd, struct file *filp, int on);
779 extern int drm_release(struct inode *inode, struct file *filp);
780
781 /* Mapping support (drm_vm.h) */
782 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
783 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
784
785 /* Memory management support (drm_memory.h) */
786 #include "drm_memory.h"
787 extern void drm_mem_init(void);
788 extern int drm_mem_info(char *buf, char **start, off_t offset,
789 int request, int *eof, void *data);
790 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size,
791 int area);
792 extern unsigned long drm_alloc_pages(int order, int area);
793 extern void drm_free_pages(unsigned long address, int order,
794 int area);
795 extern void *drm_ioremap(unsigned long offset, unsigned long size, drm_device_t *dev);
796 extern void *drm_ioremap_nocache(unsigned long offset, unsigned long size,
797 drm_device_t *dev);
798 extern void drm_ioremapfree(void *pt, unsigned long size, drm_device_t *dev);
799
800 extern DRM_AGP_MEM *drm_alloc_agp(drm_device_t *dev, int pages, u32 type);
801 extern int drm_free_agp(DRM_AGP_MEM *handle, int pages);
802 extern int drm_bind_agp(DRM_AGP_MEM *handle, unsigned int start);
803 extern int drm_unbind_agp(DRM_AGP_MEM *handle);
804
805 /* Misc. IOCTL support (drm_ioctl.h) */
806 extern int drm_irq_by_busid(struct inode *inode, struct file *filp,
807 unsigned int cmd, unsigned long arg);
808 extern int drm_getunique(struct inode *inode, struct file *filp,
809 unsigned int cmd, unsigned long arg);
810 extern int drm_setunique(struct inode *inode, struct file *filp,
811 unsigned int cmd, unsigned long arg);
812 extern int drm_getmap(struct inode *inode, struct file *filp,
813 unsigned int cmd, unsigned long arg);
814 extern int drm_getclient(struct inode *inode, struct file *filp,
815 unsigned int cmd, unsigned long arg);
816 extern int drm_getstats(struct inode *inode, struct file *filp,
817 unsigned int cmd, unsigned long arg);
818 extern int drm_setversion(struct inode *inode, struct file *filp,
819 unsigned int cmd, unsigned long arg);
820
821 /* Context IOCTL support (drm_context.h) */
822 extern int drm_resctx( struct inode *inode, struct file *filp,
823 unsigned int cmd, unsigned long arg );
824 extern int drm_addctx( struct inode *inode, struct file *filp,
825 unsigned int cmd, unsigned long arg );
826 extern int drm_modctx( struct inode *inode, struct file *filp,
827 unsigned int cmd, unsigned long arg );
828 extern int drm_getctx( struct inode *inode, struct file *filp,
829 unsigned int cmd, unsigned long arg );
830 extern int drm_switchctx( struct inode *inode, struct file *filp,
831 unsigned int cmd, unsigned long arg );
832 extern int drm_newctx( struct inode *inode, struct file *filp,
833 unsigned int cmd, unsigned long arg );
834 extern int drm_rmctx( struct inode *inode, struct file *filp,
835 unsigned int cmd, unsigned long arg );
836
837 extern int drm_ctxbitmap_init( drm_device_t *dev );
838 extern void drm_ctxbitmap_cleanup( drm_device_t *dev );
839 extern void drm_ctxbitmap_free( drm_device_t *dev, int ctx_handle );
840
841 extern int drm_setsareactx( struct inode *inode, struct file *filp,
842 unsigned int cmd, unsigned long arg );
843 extern int drm_getsareactx( struct inode *inode, struct file *filp,
844 unsigned int cmd, unsigned long arg );
845
846 /* Drawable IOCTL support (drm_drawable.h) */
847 extern int drm_adddraw(struct inode *inode, struct file *filp,
848 unsigned int cmd, unsigned long arg);
849 extern int drm_rmdraw(struct inode *inode, struct file *filp,
850 unsigned int cmd, unsigned long arg);
851
852
853 /* Authentication IOCTL support (drm_auth.h) */
854 extern int drm_getmagic(struct inode *inode, struct file *filp,
855 unsigned int cmd, unsigned long arg);
856 extern int drm_authmagic(struct inode *inode, struct file *filp,
857 unsigned int cmd, unsigned long arg);
858
859 /* Placeholder for ioctls past */
860 extern int drm_noop(struct inode *inode, struct file *filp,
861 unsigned int cmd, unsigned long arg);
862
863 /* Locking IOCTL support (drm_lock.h) */
864 extern int drm_lock(struct inode *inode, struct file *filp,
865 unsigned int cmd, unsigned long arg);
866 extern int drm_unlock(struct inode *inode, struct file *filp,
867 unsigned int cmd, unsigned long arg);
868 extern int drm_lock_take(__volatile__ unsigned int *lock,
869 unsigned int context);
870 extern int drm_lock_free(drm_device_t *dev,
871 __volatile__ unsigned int *lock,
872 unsigned int context);
873
874 /* Buffer management support (drm_bufs.h) */
875 extern int drm_addbufs_agp(drm_device_t *dev, drm_buf_desc_t *request);
876 extern int drm_addbufs_pci(drm_device_t *dev, drm_buf_desc_t *request);
877 extern int drm_addmap(drm_device_t *dev, unsigned int offset,
878 unsigned int size, drm_map_type_t type,
879 drm_map_flags_t flags, drm_local_map_t **map_ptr);
880 extern int drm_addmap_ioctl(struct inode *inode, struct file *filp,
881 unsigned int cmd, unsigned long arg);
882 extern int drm_rmmap(drm_device_t *dev, drm_local_map_t *map);
883 extern int drm_rmmap_locked(drm_device_t *dev, drm_local_map_t *map);
884 extern int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
885 unsigned int cmd, unsigned long arg);
886
887 extern int drm_order( unsigned long size );
888 extern int drm_addbufs( struct inode *inode, struct file *filp,
889 unsigned int cmd, unsigned long arg );
890 extern int drm_infobufs( struct inode *inode, struct file *filp,
891 unsigned int cmd, unsigned long arg );
892 extern int drm_markbufs( struct inode *inode, struct file *filp,
893 unsigned int cmd, unsigned long arg );
894 extern int drm_freebufs( struct inode *inode, struct file *filp,
895 unsigned int cmd, unsigned long arg );
896 extern int drm_mapbufs( struct inode *inode, struct file *filp,
897 unsigned int cmd, unsigned long arg );
898 extern unsigned long drm_get_resource_start(drm_device_t *dev,
899 unsigned int resource);
900 extern unsigned long drm_get_resource_len(drm_device_t *dev,
901 unsigned int resource);
902
903 /* DMA support (drm_dma.h) */
904 extern int drm_dma_setup(drm_device_t *dev);
905 extern void drm_dma_takedown(drm_device_t *dev);
906 extern void drm_free_buffer(drm_device_t *dev, drm_buf_t *buf);
907 extern void drm_core_reclaim_buffers(drm_device_t *dev, struct file *filp);
908
909 /* IRQ support (drm_irq.h) */
910 extern int drm_control( struct inode *inode, struct file *filp,
911 unsigned int cmd, unsigned long arg );
912 extern int drm_irq_uninstall( drm_device_t *dev );
913 extern irqreturn_t drm_irq_handler( DRM_IRQ_ARGS );
914 extern void drm_driver_irq_preinstall( drm_device_t *dev );
915 extern void drm_driver_irq_postinstall( drm_device_t *dev );
916 extern void drm_driver_irq_uninstall( drm_device_t *dev );
917
918 extern int drm_wait_vblank(struct inode *inode, struct file *filp,
919 unsigned int cmd, unsigned long arg);
920 extern int drm_vblank_wait(drm_device_t *dev, unsigned int *vbl_seq);
921 extern void drm_vbl_send_signals( drm_device_t *dev );
922
923 /* AGP/GART support (drm_agpsupport.h) */
924 extern drm_agp_head_t *drm_agp_init(drm_device_t *dev);
925 extern int drm_agp_acquire(drm_device_t * dev);
926 extern int drm_agp_acquire_ioctl(struct inode *inode, struct file *filp,
927 unsigned int cmd, unsigned long arg);
928 extern int drm_agp_release(drm_device_t *dev);
929 extern int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
930 unsigned int cmd, unsigned long arg);
931 extern int drm_agp_enable(drm_device_t *dev, drm_agp_mode_t mode);
932 extern int drm_agp_enable_ioctl(struct inode *inode, struct file *filp,
933 unsigned int cmd, unsigned long arg);
934 extern int drm_agp_info(drm_device_t * dev, drm_agp_info_t *info);
935 extern int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
936 unsigned int cmd, unsigned long arg);
937 extern int drm_agp_alloc(struct inode *inode, struct file *filp,
938 unsigned int cmd, unsigned long arg);
939 extern int drm_agp_free(struct inode *inode, struct file *filp,
940 unsigned int cmd, unsigned long arg);
941 extern int drm_agp_unbind(struct inode *inode, struct file *filp,
942 unsigned int cmd, unsigned long arg);
943 extern int drm_agp_bind(struct inode *inode, struct file *filp,
944 unsigned int cmd, unsigned long arg);
945 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type);
946 extern int drm_agp_free_memory(DRM_AGP_MEM *handle);
947 extern int drm_agp_bind_memory(DRM_AGP_MEM *handle, off_t start);
948 extern int drm_agp_unbind_memory(DRM_AGP_MEM *handle);
949
950 /* Stub support (drm_stub.h) */
951 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
952 struct drm_driver *driver);
953 extern int drm_put_dev(drm_device_t * dev);
954 extern int drm_put_head(drm_head_t * head);
955 extern unsigned int drm_debug;
956 extern unsigned int drm_cards_limit;
957 extern drm_head_t **drm_heads;
958 extern struct drm_sysfs_class *drm_class;
959 extern struct proc_dir_entry *drm_proc_root;
960
961 /* Proc support (drm_proc.h) */
962 extern int drm_proc_init(drm_device_t *dev,
963 int minor,
964 struct proc_dir_entry *root,
965 struct proc_dir_entry **dev_root);
966 extern int drm_proc_cleanup(int minor,
967 struct proc_dir_entry *root,
968 struct proc_dir_entry *dev_root);
969
970 /* Scatter Gather Support (drm_scatter.h) */
971 extern void drm_sg_cleanup(drm_sg_mem_t *entry);
972 extern int drm_sg_alloc(struct inode *inode, struct file *filp,
973 unsigned int cmd, unsigned long arg);
974 extern int drm_sg_free(struct inode *inode, struct file *filp,
975 unsigned int cmd, unsigned long arg);
976
977 /* ATI PCIGART support (ati_pcigart.h) */
978 extern int drm_ati_pcigart_init(drm_device_t *dev,
979 unsigned long *addr,
980 dma_addr_t *bus_addr);
981 extern int drm_ati_pcigart_cleanup(drm_device_t *dev,
982 unsigned long addr,
983 dma_addr_t bus_addr);
984
985 extern drm_dma_handle_t *drm_pci_alloc(drm_device_t *dev, size_t size,
986 size_t align, dma_addr_t maxaddr);
987 extern void __drm_pci_free(drm_device_t *dev, drm_dma_handle_t *dmah);
988 extern void drm_pci_free(drm_device_t *dev, drm_dma_handle_t *dmah);
989
990 /* sysfs support (drm_sysfs.c) */
991 struct drm_sysfs_class;
992 extern struct drm_sysfs_class *drm_sysfs_create(struct module *owner,
993 char *name);
994 extern void drm_sysfs_destroy(struct drm_sysfs_class *cs);
995 extern struct class_device *drm_sysfs_device_add(struct drm_sysfs_class *cs,
996 dev_t dev,
997 struct device *device,
998 const char *fmt, ...);
999 extern void drm_sysfs_device_remove(dev_t dev);
1000
1001
1002 /* Inline replacements for DRM_IOREMAP macros */
1003 static __inline__ void drm_core_ioremap(struct drm_map *map, struct drm_device *dev)
1004 {
1005 map->handle = drm_ioremap( map->offset, map->size, dev );
1006 }
1007
1008 static __inline__ void drm_core_ioremap_nocache(struct drm_map *map, struct drm_device *dev)
1009 {
1010 map->handle = drm_ioremap_nocache(map->offset, map->size, dev);
1011 }
1012
1013 static __inline__ void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev)
1014 {
1015 if ( map->handle && map->size )
1016 drm_ioremapfree( map->handle, map->size, dev );
1017 }
1018
1019 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev, unsigned int token)
1020 {
1021 drm_map_list_t *_entry;
1022 list_for_each_entry(_entry, &dev->maplist->head, head)
1023 if (_entry->user_token == token)
1024 return _entry->map;
1025 return NULL;
1026 }
1027
1028 static __inline__ int drm_device_is_agp(drm_device_t *dev)
1029 {
1030 if ( dev->driver->device_is_agp != NULL ) {
1031 int err = (*dev->driver->device_is_agp)( dev );
1032
1033 if (err != 2) {
1034 return err;
1035 }
1036 }
1037
1038 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1039 }
1040
1041 static __inline__ void drm_core_dropmap(struct drm_map *map)
1042 {
1043 }
1044
1045 #ifndef DEBUG_MEMORY
1046 /** Wrapper around kmalloc() */
1047 static __inline__ void *drm_alloc(size_t size, int area)
1048 {
1049 return kmalloc(size, GFP_KERNEL);
1050 }
1051
1052 /** Wrapper around kfree() */
1053 static __inline__ void drm_free(void *pt, size_t size, int area)
1054 {
1055 kfree(pt);
1056 }
1057
1058 /** Wrapper around kcalloc() */
1059 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1060 {
1061 return kcalloc(nmemb, size, GFP_KERNEL);
1062 }
1063 #else
1064 extern void *drm_alloc(size_t size, int area);
1065 extern void drm_free(void *pt, size_t size, int area);
1066 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1067 #endif
1068
1069 /*@}*/
1070
1071 extern unsigned long drm_core_get_map_ofs(drm_map_t *map);
1072 extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
1073
1074 #endif /* __KERNEL__ */
1075 #endif
Linux with added FPC-III support