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drm: possible cleanups
[linux-2.6/sactl.git] / drivers / char / drm / drmP.h
blobcb76e5ca9a23eed527b196a05158f09975f0addf
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 #include <linux/mutex.h>
61 #if defined(__alpha__) || defined(__powerpc__)
62 #include <asm/pgtable.h> /* For pte_wrprotect */
63 #endif
64 #include <asm/io.h>
65 #include <asm/mman.h>
66 #include <asm/uaccess.h>
67 #ifdef CONFIG_MTRR
68 #include <asm/mtrr.h>
69 #endif
70 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
71 #include <linux/types.h>
72 #include <linux/agp_backend.h>
73 #endif
74 #include <linux/workqueue.h>
75 #include <linux/poll.h>
76 #include <asm/pgalloc.h>
77 #include "drm.h"
78
79 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
80 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
81
82 #include "drm_os_linux.h"
83
84 /***********************************************************************/
85 /** \name DRM template customization defaults */
86 /*@{*/
87
88 /* driver capabilities and requirements mask */
89 #define DRIVER_USE_AGP 0x1
90 #define DRIVER_REQUIRE_AGP 0x2
91 #define DRIVER_USE_MTRR 0x4
92 #define DRIVER_PCI_DMA 0x8
93 #define DRIVER_SG 0x10
94 #define DRIVER_HAVE_DMA 0x20
95 #define DRIVER_HAVE_IRQ 0x40
96 #define DRIVER_IRQ_SHARED 0x80
97 #define DRIVER_IRQ_VBL 0x100
98 #define DRIVER_DMA_QUEUE 0x200
99 #define DRIVER_FB_DMA 0x400
100
101 /***********************************************************************/
102 /** \name Begin the DRM... */
103 /*@{*/
104
105 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
106 also include looping detection. */
107
108 #define DRM_HASH_SIZE 16 /**< Size of key hash table. Must be power of 2. */
109 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
110 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
111 #define DRM_LOOPING_LIMIT 5000000
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 /** \name Backward compatibility section */
146 /*@{*/
147
148 #define DRM_RPR_ARG(vma) vma,
149
150 #define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
151
152 /*@}*/
153
154 /***********************************************************************/
155 /** \name Macros to make printk easier */
156 /*@{*/
157
158 /**
159 * Error output.
160 *
161 * \param fmt printf() like format string.
162 * \param arg arguments
163 */
164 #define DRM_ERROR(fmt, arg...) \
165 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg)
166
167 /**
168 * Memory error output.
169 *
170 * \param area memory area where the error occurred.
171 * \param fmt printf() like format string.
172 * \param arg arguments
173 */
174 #define DRM_MEM_ERROR(area, fmt, arg...) \
175 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \
176 drm_mem_stats[area].name , ##arg)
177
178 #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
179
180 /**
181 * Debug output.
182 *
183 * \param fmt printf() like format string.
184 * \param arg arguments
185 */
186 #if DRM_DEBUG_CODE
187 #define DRM_DEBUG(fmt, arg...) \
188 do { \
189 if ( drm_debug ) \
190 printk(KERN_DEBUG \
191 "[" DRM_NAME ":%s] " fmt , \
192 __FUNCTION__ , ##arg); \
193 } while (0)
194 #else
195 #define DRM_DEBUG(fmt, arg...) do { } while (0)
196 #endif
197
198 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
199
200 #define DRM_PROC_PRINT(fmt, arg...) \
201 len += sprintf(&buf[len], fmt , ##arg); \
202 if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
203
204 #define DRM_PROC_PRINT_RET(ret, fmt, arg...) \
205 len += sprintf(&buf[len], fmt , ##arg); \
206 if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
207
208 /*@}*/
209
210 /***********************************************************************/
211 /** \name Internal types and structures */
212 /*@{*/
213
214 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
215 #define DRM_MIN(a,b) min(a,b)
216 #define DRM_MAX(a,b) max(a,b)
217
218 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
219 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
220 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
221
222 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
223 /**
224 * Get the private SAREA mapping.
225 *
226 * \param _dev DRM device.
227 * \param _ctx context number.
228 * \param _map output mapping.
229 */
230 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \
231 (_map) = (_dev)->context_sareas[_ctx]; \
232 } while(0)
233
234 /**
235 * Test that the hardware lock is held by the caller, returning otherwise.
236 *
237 * \param dev DRM device.
238 * \param filp file pointer of the caller.
239 */
240 #define LOCK_TEST_WITH_RETURN( dev, filp ) \
241 do { \
242 if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) || \
243 dev->lock.filp != filp ) { \
244 DRM_ERROR( "%s called without lock held\n", \
245 __FUNCTION__ ); \
246 return -EINVAL; \
247 } \
248 } while (0)
249
250 /**
251 * Copy and IOCTL return string to user space
252 */
253 #define DRM_COPY( name, value ) \
254 len = strlen( value ); \
255 if ( len > name##_len ) len = name##_len; \
256 name##_len = strlen( value ); \
257 if ( len && name ) { \
258 if ( copy_to_user( name, value, len ) ) \
259 return -EFAULT; \
260 }
261
262 /**
263 * Ioctl function type.
264 *
265 * \param inode device inode.
266 * \param filp file pointer.
267 * \param cmd command.
268 * \param arg argument.
269 */
270 typedef int drm_ioctl_t(struct inode *inode, struct file *filp,
271 unsigned int cmd, unsigned long arg);
272
273 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
274 unsigned long arg);
275
276 #define DRM_AUTH 0x1
277 #define DRM_MASTER 0x2
278 #define DRM_ROOT_ONLY 0x4
279
280 typedef struct drm_ioctl_desc {
281 drm_ioctl_t *func;
282 int flags;
283 } drm_ioctl_desc_t;
284
285 typedef struct drm_devstate {
286 pid_t owner; /**< X server pid holding x_lock */
287 } drm_devstate_t;
288
289 typedef struct drm_magic_entry {
290 drm_magic_t magic;
291 struct drm_file *priv;
292 struct drm_magic_entry *next;
293 } drm_magic_entry_t;
294
295 typedef struct drm_magic_head {
296 struct drm_magic_entry *head;
297 struct drm_magic_entry *tail;
298 } drm_magic_head_t;
299
300 typedef struct drm_vma_entry {
301 struct vm_area_struct *vma;
302 struct drm_vma_entry *next;
303 pid_t pid;
304 } drm_vma_entry_t;
305
306 /**
307 * DMA buffer.
308 */
309 typedef struct drm_buf {
310 int idx; /**< Index into master buflist */
311 int total; /**< Buffer size */
312 int order; /**< log-base-2(total) */
313 int used; /**< Amount of buffer in use (for DMA) */
314 unsigned long offset; /**< Byte offset (used internally) */
315 void *address; /**< Address of buffer */
316 unsigned long bus_address; /**< Bus address of buffer */
317 struct drm_buf *next; /**< Kernel-only: used for free list */
318 __volatile__ int waiting; /**< On kernel DMA queue */
319 __volatile__ int pending; /**< On hardware DMA queue */
320 wait_queue_head_t dma_wait; /**< Processes waiting */
321 struct file *filp; /**< Pointer to holding file descr */
322 int context; /**< Kernel queue for this buffer */
323 int while_locked; /**< Dispatch this buffer while locked */
324 enum {
325 DRM_LIST_NONE = 0,
326 DRM_LIST_FREE = 1,
327 DRM_LIST_WAIT = 2,
328 DRM_LIST_PEND = 3,
329 DRM_LIST_PRIO = 4,
330 DRM_LIST_RECLAIM = 5
331 } list; /**< Which list we're on */
332
333 int dev_priv_size; /**< Size of buffer private storage */
334 void *dev_private; /**< Per-buffer private storage */
335 } drm_buf_t;
336
337 /** bufs is one longer than it has to be */
338 typedef struct drm_waitlist {
339 int count; /**< Number of possible buffers */
340 drm_buf_t **bufs; /**< List of pointers to buffers */
341 drm_buf_t **rp; /**< Read pointer */
342 drm_buf_t **wp; /**< Write pointer */
343 drm_buf_t **end; /**< End pointer */
344 spinlock_t read_lock;
345 spinlock_t write_lock;
346 } drm_waitlist_t;
347
348 typedef struct drm_freelist {
349 int initialized; /**< Freelist in use */
350 atomic_t count; /**< Number of free buffers */
351 drm_buf_t *next; /**< End pointer */
352
353 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
354 int low_mark; /**< Low water mark */
355 int high_mark; /**< High water mark */
356 atomic_t wfh; /**< If waiting for high mark */
357 spinlock_t lock;
358 } drm_freelist_t;
359
360 typedef struct drm_dma_handle {
361 dma_addr_t busaddr;
362 void *vaddr;
363 size_t size;
364 } drm_dma_handle_t;
365
366 /**
367 * Buffer entry. There is one of this for each buffer size order.
368 */
369 typedef struct drm_buf_entry {
370 int buf_size; /**< size */
371 int buf_count; /**< number of buffers */
372 drm_buf_t *buflist; /**< buffer list */
373 int seg_count;
374 int page_order;
375 drm_dma_handle_t **seglist;
376
377 drm_freelist_t freelist;
378 } drm_buf_entry_t;
379
380 /** File private data */
381 typedef struct drm_file {
382 int authenticated;
383 int master;
384 int minor;
385 pid_t pid;
386 uid_t uid;
387 drm_magic_t magic;
388 unsigned long ioctl_count;
389 struct drm_file *next;
390 struct drm_file *prev;
391 struct drm_head *head;
392 int remove_auth_on_close;
393 unsigned long lock_count;
394 void *driver_priv;
395 } drm_file_t;
396
397 /** Wait queue */
398 typedef struct drm_queue {
399 atomic_t use_count; /**< Outstanding uses (+1) */
400 atomic_t finalization; /**< Finalization in progress */
401 atomic_t block_count; /**< Count of processes waiting */
402 atomic_t block_read; /**< Queue blocked for reads */
403 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
404 atomic_t block_write; /**< Queue blocked for writes */
405 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
406 #if 1
407 atomic_t total_queued; /**< Total queued statistic */
408 atomic_t total_flushed; /**< Total flushes statistic */
409 atomic_t total_locks; /**< Total locks statistics */
410 #endif
411 drm_ctx_flags_t flags; /**< Context preserving and 2D-only */
412 drm_waitlist_t waitlist; /**< Pending buffers */
413 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
414 } drm_queue_t;
415
416 /**
417 * Lock data.
418 */
419 typedef struct drm_lock_data {
420 drm_hw_lock_t *hw_lock; /**< Hardware lock */
421 struct file *filp; /**< File descr of lock holder (0=kernel) */
422 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
423 unsigned long lock_time; /**< Time of last lock in jiffies */
424 } drm_lock_data_t;
425
426 /**
427 * DMA data.
428 */
429 typedef struct drm_device_dma {
430
431 drm_buf_entry_t bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
432 int buf_count; /**< total number of buffers */
433 drm_buf_t **buflist; /**< Vector of pointers into drm_device_dma::bufs */
434 int seg_count;
435 int page_count; /**< number of pages */
436 unsigned long *pagelist; /**< page list */
437 unsigned long byte_count;
438 enum {
439 _DRM_DMA_USE_AGP = 0x01,
440 _DRM_DMA_USE_SG = 0x02,
441 _DRM_DMA_USE_FB = 0x04
442 } flags;
443
444 } drm_device_dma_t;
445
446 /**
447 * AGP memory entry. Stored as a doubly linked list.
448 */
449 typedef struct drm_agp_mem {
450 unsigned long handle; /**< handle */
451 DRM_AGP_MEM *memory;
452 unsigned long bound; /**< address */
453 int pages;
454 struct drm_agp_mem *prev; /**< previous entry */
455 struct drm_agp_mem *next; /**< next entry */
456 } drm_agp_mem_t;
457
458 /**
459 * AGP data.
460 *
461 * \sa drm_agp_init() and drm_device::agp.
462 */
463 typedef struct drm_agp_head {
464 DRM_AGP_KERN agp_info; /**< AGP device information */
465 drm_agp_mem_t *memory; /**< memory entries */
466 unsigned long mode; /**< AGP mode */
467 struct agp_bridge_data *bridge;
468 int enabled; /**< whether the AGP bus as been enabled */
469 int acquired; /**< whether the AGP device has been acquired */
470 unsigned long base;
471 int agp_mtrr;
472 int cant_use_aperture;
473 unsigned long page_mask;
474 } drm_agp_head_t;
475
476 /**
477 * Scatter-gather memory.
478 */
479 typedef struct drm_sg_mem {
480 unsigned long handle;
481 void *virtual;
482 int pages;
483 struct page **pagelist;
484 dma_addr_t *busaddr;
485 } drm_sg_mem_t;
486
487 typedef struct drm_sigdata {
488 int context;
489 drm_hw_lock_t *lock;
490 } drm_sigdata_t;
491
492 /**
493 * Mappings list
494 */
495 typedef struct drm_map_list {
496 struct list_head head; /**< list head */
497 drm_map_t *map; /**< mapping */
498 unsigned int user_token;
499 } drm_map_list_t;
500
501 typedef drm_map_t drm_local_map_t;
502
503 /**
504 * Context handle list
505 */
506 typedef struct drm_ctx_list {
507 struct list_head head; /**< list head */
508 drm_context_t handle; /**< context handle */
509 drm_file_t *tag; /**< associated fd private data */
510 } drm_ctx_list_t;
511
512 typedef struct drm_vbl_sig {
513 struct list_head head;
514 unsigned int sequence;
515 struct siginfo info;
516 struct task_struct *task;
517 } drm_vbl_sig_t;
518
519 /* location of GART table */
520 #define DRM_ATI_GART_MAIN 1
521 #define DRM_ATI_GART_FB 2
522
523 typedef struct ati_pcigart_info {
524 int gart_table_location;
525 int is_pcie;
526 void *addr;
527 dma_addr_t bus_addr;
528 drm_local_map_t mapping;
529 } drm_ati_pcigart_info;
530
531 /**
532 * DRM driver structure. This structure represent the common code for
533 * a family of cards. There will one drm_device for each card present
534 * in this family
535 */
536 struct drm_device;
537
538 struct drm_driver {
539 int (*load) (struct drm_device *, unsigned long flags);
540 int (*firstopen) (struct drm_device *);
541 int (*open) (struct drm_device *, drm_file_t *);
542 void (*preclose) (struct drm_device *, struct file * filp);
543 void (*postclose) (struct drm_device *, drm_file_t *);
544 void (*lastclose) (struct drm_device *);
545 int (*unload) (struct drm_device *);
546 int (*dma_ioctl) (DRM_IOCTL_ARGS);
547 void (*dma_ready) (struct drm_device *);
548 int (*dma_quiescent) (struct drm_device *);
549 int (*context_ctor) (struct drm_device * dev, int context);
550 int (*context_dtor) (struct drm_device * dev, int context);
551 int (*kernel_context_switch) (struct drm_device * dev, int old,
552 int new);
553 void (*kernel_context_switch_unlock) (struct drm_device * dev,
554 drm_lock_t *lock);
555 int (*vblank_wait) (struct drm_device * dev, unsigned int *sequence);
556 int (*dri_library_name) (struct drm_device *dev, char *buf);
557
558 /**
559 * Called by \c drm_device_is_agp. Typically used to determine if a
560 * card is really attached to AGP or not.
561 *
562 * \param dev DRM device handle
563 *
564 * \returns
565 * One of three values is returned depending on whether or not the
566 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
567 * (return of 1), or may or may not be AGP (return of 2).
568 */
569 int (*device_is_agp) (struct drm_device * dev);
570
571 /* these have to be filled in */
572
573 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
574 void (*irq_preinstall) (struct drm_device * dev);
575 void (*irq_postinstall) (struct drm_device * dev);
576 void (*irq_uninstall) (struct drm_device * dev);
577 void (*reclaim_buffers) (struct drm_device * dev, struct file * filp);
578 void (*reclaim_buffers_locked) (struct drm_device *dev,
579 struct file *filp);
580 unsigned long (*get_map_ofs) (drm_map_t * map);
581 unsigned long (*get_reg_ofs) (struct drm_device * dev);
582 void (*set_version) (struct drm_device * dev, drm_set_version_t * sv);
583
584 int major;
585 int minor;
586 int patchlevel;
587 char *name;
588 char *desc;
589 char *date;
590
591 u32 driver_features;
592 int dev_priv_size;
593 drm_ioctl_desc_t *ioctls;
594 int num_ioctls;
595 struct file_operations fops;
596 struct pci_driver pci_driver;
597 };
598
599 /**
600 * DRM head structure. This structure represent a video head on a card
601 * that may contain multiple heads. Embed one per head of these in the
602 * private drm_device structure.
603 */
604 typedef struct drm_head {
605 int minor; /**< Minor device number */
606 struct drm_device *dev;
607 struct proc_dir_entry *dev_root; /**< proc directory entry */
608 dev_t device; /**< Device number for mknod */
609 struct class_device *dev_class;
610 } drm_head_t;
611
612 /**
613 * DRM device structure. This structure represent a complete card that
614 * may contain multiple heads.
615 */
616 typedef struct drm_device {
617 char *unique; /**< Unique identifier: e.g., busid */
618 int unique_len; /**< Length of unique field */
619 char *devname; /**< For /proc/interrupts */
620 int if_version; /**< Highest interface version set */
621
622 int blocked; /**< Blocked due to VC switch? */
623
624 /** \name Locks */
625 /*@{ */
626 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
627 struct mutex struct_mutex; /**< For others */
628 /*@} */
629
630 /** \name Usage Counters */
631 /*@{ */
632 int open_count; /**< Outstanding files open */
633 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
634 atomic_t vma_count; /**< Outstanding vma areas open */
635 int buf_use; /**< Buffers in use -- cannot alloc */
636 atomic_t buf_alloc; /**< Buffer allocation in progress */
637 /*@} */
638
639 /** \name Performance counters */
640 /*@{ */
641 unsigned long counters;
642 drm_stat_type_t types[15];
643 atomic_t counts[15];
644 /*@} */
645
646 /** \name Authentication */
647 /*@{ */
648 drm_file_t *file_first; /**< file list head */
649 drm_file_t *file_last; /**< file list tail */
650 drm_magic_head_t magiclist[DRM_HASH_SIZE]; /**< magic hash table */
651 /*@} */
652
653 /** \name Memory management */
654 /*@{ */
655 drm_map_list_t *maplist; /**< Linked list of regions */
656 int map_count; /**< Number of mappable regions */
657
658 /** \name Context handle management */
659 /*@{ */
660 drm_ctx_list_t *ctxlist; /**< Linked list of context handles */
661 int ctx_count; /**< Number of context handles */
662 struct mutex ctxlist_mutex; /**< For ctxlist */
663
664 drm_map_t **context_sareas; /**< per-context SAREA's */
665 int max_context;
666
667 drm_vma_entry_t *vmalist; /**< List of vmas (for debugging) */
668 drm_lock_data_t lock; /**< Information on hardware lock */
669 /*@} */
670
671 /** \name DMA queues (contexts) */
672 /*@{ */
673 int queue_count; /**< Number of active DMA queues */
674 int queue_reserved; /**< Number of reserved DMA queues */
675 int queue_slots; /**< Actual length of queuelist */
676 drm_queue_t **queuelist; /**< Vector of pointers to DMA queues */
677 drm_device_dma_t *dma; /**< Optional pointer for DMA support */
678 /*@} */
679
680 /** \name Context support */
681 /*@{ */
682 int irq; /**< Interrupt used by board */
683 int irq_enabled; /**< True if irq handler is enabled */
684 __volatile__ long context_flag; /**< Context swapping flag */
685 __volatile__ long interrupt_flag; /**< Interruption handler flag */
686 __volatile__ long dma_flag; /**< DMA dispatch flag */
687 struct timer_list timer; /**< Timer for delaying ctx switch */
688 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
689 int last_checked; /**< Last context checked for DMA */
690 int last_context; /**< Last current context */
691 unsigned long last_switch; /**< jiffies at last context switch */
692 /*@} */
693
694 struct work_struct work;
695 /** \name VBLANK IRQ support */
696 /*@{ */
697
698 wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
699 atomic_t vbl_received;
700 spinlock_t vbl_lock;
701 drm_vbl_sig_t vbl_sigs; /**< signal list to send on VBLANK */
702 unsigned int vbl_pending;
703
704 /*@} */
705 cycles_t ctx_start;
706 cycles_t lck_start;
707
708 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
709 wait_queue_head_t buf_readers; /**< Processes waiting to read */
710 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
711
712 drm_agp_head_t *agp; /**< AGP data */
713
714 struct pci_dev *pdev; /**< PCI device structure */
715 int pci_domain; /**< PCI bus domain number */
716 int pci_bus; /**< PCI bus number */
717 int pci_slot; /**< PCI slot number */
718 int pci_func; /**< PCI function number */
719 #ifdef __alpha__
720 struct pci_controller *hose;
721 #endif
722 drm_sg_mem_t *sg; /**< Scatter gather memory */
723 unsigned long *ctx_bitmap; /**< context bitmap */
724 void *dev_private; /**< device private data */
725 drm_sigdata_t sigdata; /**< For block_all_signals */
726 sigset_t sigmask;
727
728 struct drm_driver *driver;
729 drm_local_map_t *agp_buffer_map;
730 unsigned int agp_buffer_token;
731 drm_head_t primary; /**< primary screen head */
732 } drm_device_t;
733
734 static __inline__ int drm_core_check_feature(struct drm_device *dev,
735 int feature)
736 {
737 return ((dev->driver->driver_features & feature) ? 1 : 0);
738 }
739
740 #if __OS_HAS_AGP
741 static inline int drm_core_has_AGP(struct drm_device *dev)
742 {
743 return drm_core_check_feature(dev, DRIVER_USE_AGP);
744 }
745 #else
746 #define drm_core_has_AGP(dev) (0)
747 #endif
748
749 #if __OS_HAS_MTRR
750 static inline int drm_core_has_MTRR(struct drm_device *dev)
751 {
752 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
753 }
754
755 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
756
757 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
758 unsigned int flags)
759 {
760 return mtrr_add(offset, size, flags, 1);
761 }
762
763 static inline int drm_mtrr_del(int handle, unsigned long offset,
764 unsigned long size, unsigned int flags)
765 {
766 return mtrr_del(handle, offset, size);
767 }
768
769 #else
770 #define drm_core_has_MTRR(dev) (0)
771
772 #define DRM_MTRR_WC 0
773
774 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
775 unsigned int flags)
776 {
777 return 0;
778 }
779
780 static inline int drm_mtrr_del(int handle, unsigned long offset,
781 unsigned long size, unsigned int flags)
782 {
783 return 0;
784 }
785 #endif
786
787 /******************************************************************/
788 /** \name Internal function definitions */
789 /*@{*/
790
791 /* Driver support (drm_drv.h) */
792 extern int drm_init(struct drm_driver *driver);
793 extern void drm_exit(struct drm_driver *driver);
794 extern int drm_ioctl(struct inode *inode, struct file *filp,
795 unsigned int cmd, unsigned long arg);
796 extern long drm_compat_ioctl(struct file *filp,
797 unsigned int cmd, unsigned long arg);
798 extern int drm_lastclose(drm_device_t *dev);
799
800 /* Device support (drm_fops.h) */
801 extern int drm_open(struct inode *inode, struct file *filp);
802 extern int drm_stub_open(struct inode *inode, struct file *filp);
803 extern int drm_fasync(int fd, struct file *filp, int on);
804 extern int drm_release(struct inode *inode, struct file *filp);
805
806 /* Mapping support (drm_vm.h) */
807 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
808 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
809
810 /* Memory management support (drm_memory.h) */
811 #include "drm_memory.h"
812 extern void drm_mem_init(void);
813 extern int drm_mem_info(char *buf, char **start, off_t offset,
814 int request, int *eof, void *data);
815 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
816 extern void *drm_ioremap(unsigned long offset, unsigned long size,
817 drm_device_t * dev);
818 extern void drm_ioremapfree(void *pt, unsigned long size, drm_device_t * dev);
819
820 extern DRM_AGP_MEM *drm_alloc_agp(drm_device_t * dev, int pages, u32 type);
821 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
822 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
823 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
824
825 /* Misc. IOCTL support (drm_ioctl.h) */
826 extern int drm_irq_by_busid(struct inode *inode, struct file *filp,
827 unsigned int cmd, unsigned long arg);
828 extern int drm_getunique(struct inode *inode, struct file *filp,
829 unsigned int cmd, unsigned long arg);
830 extern int drm_setunique(struct inode *inode, struct file *filp,
831 unsigned int cmd, unsigned long arg);
832 extern int drm_getmap(struct inode *inode, struct file *filp,
833 unsigned int cmd, unsigned long arg);
834 extern int drm_getclient(struct inode *inode, struct file *filp,
835 unsigned int cmd, unsigned long arg);
836 extern int drm_getstats(struct inode *inode, struct file *filp,
837 unsigned int cmd, unsigned long arg);
838 extern int drm_setversion(struct inode *inode, struct file *filp,
839 unsigned int cmd, unsigned long arg);
840 extern int drm_noop(struct inode *inode, struct file *filp,
841 unsigned int cmd, unsigned long arg);
842
843 /* Context IOCTL support (drm_context.h) */
844 extern int drm_resctx(struct inode *inode, struct file *filp,
845 unsigned int cmd, unsigned long arg);
846 extern int drm_addctx(struct inode *inode, struct file *filp,
847 unsigned int cmd, unsigned long arg);
848 extern int drm_modctx(struct inode *inode, struct file *filp,
849 unsigned int cmd, unsigned long arg);
850 extern int drm_getctx(struct inode *inode, struct file *filp,
851 unsigned int cmd, unsigned long arg);
852 extern int drm_switchctx(struct inode *inode, struct file *filp,
853 unsigned int cmd, unsigned long arg);
854 extern int drm_newctx(struct inode *inode, struct file *filp,
855 unsigned int cmd, unsigned long arg);
856 extern int drm_rmctx(struct inode *inode, struct file *filp,
857 unsigned int cmd, unsigned long arg);
858
859 extern int drm_ctxbitmap_init(drm_device_t * dev);
860 extern void drm_ctxbitmap_cleanup(drm_device_t * dev);
861 extern void drm_ctxbitmap_free(drm_device_t * dev, int ctx_handle);
862
863 extern int drm_setsareactx(struct inode *inode, struct file *filp,
864 unsigned int cmd, unsigned long arg);
865 extern int drm_getsareactx(struct inode *inode, struct file *filp,
866 unsigned int cmd, unsigned long arg);
867
868 /* Drawable IOCTL support (drm_drawable.h) */
869 extern int drm_adddraw(struct inode *inode, struct file *filp,
870 unsigned int cmd, unsigned long arg);
871 extern int drm_rmdraw(struct inode *inode, struct file *filp,
872 unsigned int cmd, unsigned long arg);
873
874 /* Authentication IOCTL support (drm_auth.h) */
875 extern int drm_getmagic(struct inode *inode, struct file *filp,
876 unsigned int cmd, unsigned long arg);
877 extern int drm_authmagic(struct inode *inode, struct file *filp,
878 unsigned int cmd, unsigned long arg);
879
880 /* Locking IOCTL support (drm_lock.h) */
881 extern int drm_lock(struct inode *inode, struct file *filp,
882 unsigned int cmd, unsigned long arg);
883 extern int drm_unlock(struct inode *inode, struct file *filp,
884 unsigned int cmd, unsigned long arg);
885 extern int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context);
886 extern int drm_lock_free(drm_device_t * dev,
887 __volatile__ unsigned int *lock, unsigned int context);
888
889 /* Buffer management support (drm_bufs.h) */
890 extern int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request);
891 extern int drm_addbufs_pci(drm_device_t * dev, drm_buf_desc_t * request);
892 extern int drm_addmap(drm_device_t * dev, unsigned int offset,
893 unsigned int size, drm_map_type_t type,
894 drm_map_flags_t flags, drm_local_map_t ** map_ptr);
895 extern int drm_addmap_ioctl(struct inode *inode, struct file *filp,
896 unsigned int cmd, unsigned long arg);
897 extern int drm_rmmap(drm_device_t * dev, drm_local_map_t * map);
898 extern int drm_rmmap_locked(drm_device_t * dev, drm_local_map_t * map);
899 extern int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
900 unsigned int cmd, unsigned long arg);
901
902 extern int drm_order(unsigned long size);
903 extern int drm_addbufs(struct inode *inode, struct file *filp,
904 unsigned int cmd, unsigned long arg);
905 extern int drm_infobufs(struct inode *inode, struct file *filp,
906 unsigned int cmd, unsigned long arg);
907 extern int drm_markbufs(struct inode *inode, struct file *filp,
908 unsigned int cmd, unsigned long arg);
909 extern int drm_freebufs(struct inode *inode, struct file *filp,
910 unsigned int cmd, unsigned long arg);
911 extern int drm_mapbufs(struct inode *inode, struct file *filp,
912 unsigned int cmd, unsigned long arg);
913 extern unsigned long drm_get_resource_start(drm_device_t * dev,
914 unsigned int resource);
915 extern unsigned long drm_get_resource_len(drm_device_t * dev,
916 unsigned int resource);
917
918 /* DMA support (drm_dma.h) */
919 extern int drm_dma_setup(drm_device_t * dev);
920 extern void drm_dma_takedown(drm_device_t * dev);
921 extern void drm_free_buffer(drm_device_t * dev, drm_buf_t * buf);
922 extern void drm_core_reclaim_buffers(drm_device_t * dev, struct file *filp);
923
924 /* IRQ support (drm_irq.h) */
925 extern int drm_control(struct inode *inode, struct file *filp,
926 unsigned int cmd, unsigned long arg);
927 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
928 extern int drm_irq_uninstall(drm_device_t * dev);
929 extern void drm_driver_irq_preinstall(drm_device_t * dev);
930 extern void drm_driver_irq_postinstall(drm_device_t * dev);
931 extern void drm_driver_irq_uninstall(drm_device_t * dev);
932
933 extern int drm_wait_vblank(struct inode *inode, struct file *filp,
934 unsigned int cmd, unsigned long arg);
935 extern int drm_vblank_wait(drm_device_t * dev, unsigned int *vbl_seq);
936 extern void drm_vbl_send_signals(drm_device_t * dev);
937
938 /* AGP/GART support (drm_agpsupport.h) */
939 extern drm_agp_head_t *drm_agp_init(drm_device_t * dev);
940 extern int drm_agp_acquire(drm_device_t * dev);
941 extern int drm_agp_acquire_ioctl(struct inode *inode, struct file *filp,
942 unsigned int cmd, unsigned long arg);
943 extern int drm_agp_release(drm_device_t * dev);
944 extern int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
945 unsigned int cmd, unsigned long arg);
946 extern int drm_agp_enable(drm_device_t * dev, drm_agp_mode_t mode);
947 extern int drm_agp_enable_ioctl(struct inode *inode, struct file *filp,
948 unsigned int cmd, unsigned long arg);
949 extern int drm_agp_info(drm_device_t * dev, drm_agp_info_t * info);
950 extern int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
951 unsigned int cmd, unsigned long arg);
952 extern int drm_agp_alloc(drm_device_t *dev, drm_agp_buffer_t *request);
953 extern int drm_agp_alloc_ioctl(struct inode *inode, struct file *filp,
954 unsigned int cmd, unsigned long arg);
955 extern int drm_agp_free(drm_device_t *dev, drm_agp_buffer_t *request);
956 extern int drm_agp_free_ioctl(struct inode *inode, struct file *filp,
957 unsigned int cmd, unsigned long arg);
958 extern int drm_agp_unbind(drm_device_t *dev, drm_agp_binding_t *request);
959 extern int drm_agp_unbind_ioctl(struct inode *inode, struct file *filp,
960 unsigned int cmd, unsigned long arg);
961 extern int drm_agp_bind(drm_device_t *dev, drm_agp_binding_t *request);
962 extern int drm_agp_bind_ioctl(struct inode *inode, struct file *filp,
963 unsigned int cmd, unsigned long arg);
964 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge,
965 size_t pages, u32 type);
966 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
967 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
968 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
969
970 /* Stub support (drm_stub.h) */
971 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
972 struct drm_driver *driver);
973 extern int drm_put_dev(drm_device_t * dev);
974 extern int drm_put_head(drm_head_t * head);
975 extern unsigned int drm_debug;
976 extern unsigned int drm_cards_limit;
977 extern drm_head_t **drm_heads;
978 extern struct class *drm_class;
979 extern struct proc_dir_entry *drm_proc_root;
980
981 /* Proc support (drm_proc.h) */
982 extern int drm_proc_init(drm_device_t * dev,
983 int minor,
984 struct proc_dir_entry *root,
985 struct proc_dir_entry **dev_root);
986 extern int drm_proc_cleanup(int minor,
987 struct proc_dir_entry *root,
988 struct proc_dir_entry *dev_root);
989
990 /* Scatter Gather Support (drm_scatter.h) */
991 extern void drm_sg_cleanup(drm_sg_mem_t * entry);
992 extern int drm_sg_alloc(struct inode *inode, struct file *filp,
993 unsigned int cmd, unsigned long arg);
994 extern int drm_sg_free(struct inode *inode, struct file *filp,
995 unsigned int cmd, unsigned long arg);
996
997 /* ATI PCIGART support (ati_pcigart.h) */
998 extern int drm_ati_pcigart_init(drm_device_t * dev,
999 drm_ati_pcigart_info * gart_info);
1000 extern int drm_ati_pcigart_cleanup(drm_device_t * dev,
1001 drm_ati_pcigart_info * gart_info);
1002
1003 extern drm_dma_handle_t *drm_pci_alloc(drm_device_t * dev, size_t size,
1004 size_t align, dma_addr_t maxaddr);
1005 extern void __drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah);
1006 extern void drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah);
1007
1008 /* sysfs support (drm_sysfs.c) */
1009 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1010 extern void drm_sysfs_destroy(struct class *cs);
1011 extern struct class_device *drm_sysfs_device_add(struct class *cs,
1012 drm_head_t *head);
1013 extern void drm_sysfs_device_remove(struct class_device *class_dev);
1014
1015 /* Inline replacements for DRM_IOREMAP macros */
1016 static __inline__ void drm_core_ioremap(struct drm_map *map,
1017 struct drm_device *dev)
1018 {
1019 map->handle = drm_ioremap(map->offset, map->size, dev);
1020 }
1021
1022 #if 0
1023 static __inline__ void drm_core_ioremap_nocache(struct drm_map *map,
1024 struct drm_device *dev)
1025 {
1026 map->handle = drm_ioremap_nocache(map->offset, map->size, dev);
1027 }
1028 #endif /* 0 */
1029
1030 static __inline__ void drm_core_ioremapfree(struct drm_map *map,
1031 struct drm_device *dev)
1032 {
1033 if (map->handle && map->size)
1034 drm_ioremapfree(map->handle, map->size, dev);
1035 }
1036
1037 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev,
1038 unsigned int token)
1039 {
1040 drm_map_list_t *_entry;
1041 list_for_each_entry(_entry, &dev->maplist->head, head)
1042 if (_entry->user_token == token)
1043 return _entry->map;
1044 return NULL;
1045 }
1046
1047 static __inline__ int drm_device_is_agp(drm_device_t * dev)
1048 {
1049 if (dev->driver->device_is_agp != NULL) {
1050 int err = (*dev->driver->device_is_agp) (dev);
1051
1052 if (err != 2) {
1053 return err;
1054 }
1055 }
1056
1057 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1058 }
1059
1060 static __inline__ int drm_device_is_pcie(drm_device_t * dev)
1061 {
1062 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1063 }
1064
1065 static __inline__ void drm_core_dropmap(struct drm_map *map)
1066 {
1067 }
1068
1069 #ifndef DEBUG_MEMORY
1070 /** Wrapper around kmalloc() */
1071 static __inline__ void *drm_alloc(size_t size, int area)
1072 {
1073 return kmalloc(size, GFP_KERNEL);
1074 }
1075
1076 /** Wrapper around kfree() */
1077 static __inline__ void drm_free(void *pt, size_t size, int area)
1078 {
1079 kfree(pt);
1080 }
1081
1082 /** Wrapper around kcalloc() */
1083 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1084 {
1085 return kcalloc(nmemb, size, GFP_KERNEL);
1086 }
1087 #else
1088 extern void *drm_alloc(size_t size, int area);
1089 extern void drm_free(void *pt, size_t size, int area);
1090 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1091 #endif
1092
1093 /*@}*/
1094
1095 extern unsigned long drm_core_get_map_ofs(drm_map_t * map);
1096 extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
1097
1098 #ifndef pci_pretty_name
1099 #define pci_pretty_name(dev) ""
1100 #endif
1101
1102 #endif /* __KERNEL__ */
1103 #endif
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