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drm: detypedeffing continues...
[linux-2.6/mini2440.git] / drivers / char / drm / drmP.h
blobc24a25606c1871b251cc222a2ea7845635696893
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/module.h>
48 #include <linux/kernel.h>
49 #include <linux/miscdevice.h>
50 #include <linux/fs.h>
51 #include <linux/proc_fs.h>
52 #include <linux/init.h>
53 #include <linux/file.h>
54 #include <linux/pci.h>
55 #include <linux/jiffies.h>
56 #include <linux/smp_lock.h> /* For (un)lock_kernel */
57 #include <linux/mm.h>
58 #include <linux/cdev.h>
59 #include <linux/mutex.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 #include "drm_hashtab.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 #define DRIVER_IRQ_VBL2 0x800
101
102 /***********************************************************************/
103 /** \name Begin the DRM... */
104 /*@{*/
105
106 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
107 also include looping detection. */
108
109 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
110 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
111 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
112 #define DRM_LOOPING_LIMIT 5000000
113 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
114 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
115
116 #define DRM_FLAG_DEBUG 0x01
117
118 #define DRM_MEM_DMA 0
119 #define DRM_MEM_SAREA 1
120 #define DRM_MEM_DRIVER 2
121 #define DRM_MEM_MAGIC 3
122 #define DRM_MEM_IOCTLS 4
123 #define DRM_MEM_MAPS 5
124 #define DRM_MEM_VMAS 6
125 #define DRM_MEM_BUFS 7
126 #define DRM_MEM_SEGS 8
127 #define DRM_MEM_PAGES 9
128 #define DRM_MEM_FILES 10
129 #define DRM_MEM_QUEUES 11
130 #define DRM_MEM_CMDS 12
131 #define DRM_MEM_MAPPINGS 13
132 #define DRM_MEM_BUFLISTS 14
133 #define DRM_MEM_AGPLISTS 15
134 #define DRM_MEM_TOTALAGP 16
135 #define DRM_MEM_BOUNDAGP 17
136 #define DRM_MEM_CTXBITMAP 18
137 #define DRM_MEM_STUB 19
138 #define DRM_MEM_SGLISTS 20
139 #define DRM_MEM_CTXLIST 21
140 #define DRM_MEM_MM 22
141 #define DRM_MEM_HASHTAB 23
142
143 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
144 #define DRM_MAP_HASH_OFFSET 0x10000000
145
146 /*@}*/
147
148 /***********************************************************************/
149 /** \name Macros to make printk easier */
150 /*@{*/
151
152 /**
153 * Error output.
154 *
155 * \param fmt printf() like format string.
156 * \param arg arguments
157 */
158 #define DRM_ERROR(fmt, arg...) \
159 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg)
160
161 /**
162 * Memory error output.
163 *
164 * \param area memory area where the error occurred.
165 * \param fmt printf() like format string.
166 * \param arg arguments
167 */
168 #define DRM_MEM_ERROR(area, fmt, arg...) \
169 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \
170 drm_mem_stats[area].name , ##arg)
171
172 #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
173
174 /**
175 * Debug output.
176 *
177 * \param fmt printf() like format string.
178 * \param arg arguments
179 */
180 #if DRM_DEBUG_CODE
181 #define DRM_DEBUG(fmt, arg...) \
182 do { \
183 if ( drm_debug ) \
184 printk(KERN_DEBUG \
185 "[" DRM_NAME ":%s] " fmt , \
186 __FUNCTION__ , ##arg); \
187 } while (0)
188 #else
189 #define DRM_DEBUG(fmt, arg...) do { } while (0)
190 #endif
191
192 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
193
194 #define DRM_PROC_PRINT(fmt, arg...) \
195 len += sprintf(&buf[len], fmt , ##arg); \
196 if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
197
198 #define DRM_PROC_PRINT_RET(ret, fmt, arg...) \
199 len += sprintf(&buf[len], fmt , ##arg); \
200 if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
201
202 /*@}*/
203
204 /***********************************************************************/
205 /** \name Internal types and structures */
206 /*@{*/
207
208 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
209
210 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
211 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
212 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
213
214 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
215 /**
216 * Get the private SAREA mapping.
217 *
218 * \param _dev DRM device.
219 * \param _ctx context number.
220 * \param _map output mapping.
221 */
222 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \
223 (_map) = (_dev)->context_sareas[_ctx]; \
224 } while(0)
225
226 /**
227 * Test that the hardware lock is held by the caller, returning otherwise.
228 *
229 * \param dev DRM device.
230 * \param filp file pointer of the caller.
231 */
232 #define LOCK_TEST_WITH_RETURN( dev, filp ) \
233 do { \
234 if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) || \
235 dev->lock.filp != filp ) { \
236 DRM_ERROR( "%s called without lock held\n", \
237 __FUNCTION__ ); \
238 return -EINVAL; \
239 } \
240 } while (0)
241
242 /**
243 * Copy and IOCTL return string to user space
244 */
245 #define DRM_COPY( name, value ) \
246 len = strlen( value ); \
247 if ( len > name##_len ) len = name##_len; \
248 name##_len = strlen( value ); \
249 if ( len && name ) { \
250 if ( copy_to_user( name, value, len ) ) \
251 return -EFAULT; \
252 }
253
254 /**
255 * Ioctl function type.
256 *
257 * \param inode device inode.
258 * \param filp file pointer.
259 * \param cmd command.
260 * \param arg argument.
261 */
262 typedef int drm_ioctl_t(struct inode *inode, struct file *filp,
263 unsigned int cmd, unsigned long arg);
264
265 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
266 unsigned long arg);
267
268 #define DRM_AUTH 0x1
269 #define DRM_MASTER 0x2
270 #define DRM_ROOT_ONLY 0x4
271
272 typedef struct drm_ioctl_desc {
273 drm_ioctl_t *func;
274 int flags;
275 } drm_ioctl_desc_t;
276
277 struct drm_magic_entry {
278 struct list_head head;
279 drm_hash_item_t hash_item;
280 struct drm_file *priv;
281 struct drm_magic_entry *next;
282 };
283
284 struct drm_vma_entry {
285 struct list_head head;
286 struct vm_area_struct *vma;
287 pid_t pid;
288 };
289
290 /**
291 * DMA buffer.
292 */
293 struct drm_buf {
294 int idx; /**< Index into master buflist */
295 int total; /**< Buffer size */
296 int order; /**< log-base-2(total) */
297 int used; /**< Amount of buffer in use (for DMA) */
298 unsigned long offset; /**< Byte offset (used internally) */
299 void *address; /**< Address of buffer */
300 unsigned long bus_address; /**< Bus address of buffer */
301 struct drm_buf *next; /**< Kernel-only: used for free list */
302 __volatile__ int waiting; /**< On kernel DMA queue */
303 __volatile__ int pending; /**< On hardware DMA queue */
304 wait_queue_head_t dma_wait; /**< Processes waiting */
305 struct file *filp; /**< Pointer to holding file descr */
306 int context; /**< Kernel queue for this buffer */
307 int while_locked; /**< Dispatch this buffer while locked */
308 enum {
309 DRM_LIST_NONE = 0,
310 DRM_LIST_FREE = 1,
311 DRM_LIST_WAIT = 2,
312 DRM_LIST_PEND = 3,
313 DRM_LIST_PRIO = 4,
314 DRM_LIST_RECLAIM = 5
315 } list; /**< Which list we're on */
316
317 int dev_priv_size; /**< Size of buffer private storage */
318 void *dev_private; /**< Per-buffer private storage */
319 };
320
321 /** bufs is one longer than it has to be */
322 struct drm_waitlist {
323 int count; /**< Number of possible buffers */
324 struct drm_buf **bufs; /**< List of pointers to buffers */
325 struct drm_buf **rp; /**< Read pointer */
326 struct drm_buf **wp; /**< Write pointer */
327 struct drm_buf **end; /**< End pointer */
328 spinlock_t read_lock;
329 spinlock_t write_lock;
330 };
331
332 struct drm_freelist {
333 int initialized; /**< Freelist in use */
334 atomic_t count; /**< Number of free buffers */
335 struct drm_buf *next; /**< End pointer */
336
337 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
338 int low_mark; /**< Low water mark */
339 int high_mark; /**< High water mark */
340 atomic_t wfh; /**< If waiting for high mark */
341 spinlock_t lock;
342 };
343
344 typedef struct drm_dma_handle {
345 dma_addr_t busaddr;
346 void *vaddr;
347 size_t size;
348 } drm_dma_handle_t;
349
350 /**
351 * Buffer entry. There is one of this for each buffer size order.
352 */
353 struct drm_buf_entry {
354 int buf_size; /**< size */
355 int buf_count; /**< number of buffers */
356 struct drm_buf *buflist; /**< buffer list */
357 int seg_count;
358 int page_order;
359 struct drm_dma_handle **seglist;
360
361 struct drm_freelist freelist;
362 };
363
364 /** File private data */
365 struct drm_file {
366 int authenticated;
367 int master;
368 int minor;
369 pid_t pid;
370 uid_t uid;
371 drm_magic_t magic;
372 unsigned long ioctl_count;
373 struct list_head lhead;
374 struct drm_head *head;
375 int remove_auth_on_close;
376 unsigned long lock_count;
377 void *driver_priv;
378 };
379
380 /** Wait queue */
381 struct drm_queue {
382 atomic_t use_count; /**< Outstanding uses (+1) */
383 atomic_t finalization; /**< Finalization in progress */
384 atomic_t block_count; /**< Count of processes waiting */
385 atomic_t block_read; /**< Queue blocked for reads */
386 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
387 atomic_t block_write; /**< Queue blocked for writes */
388 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
389 #if 1
390 atomic_t total_queued; /**< Total queued statistic */
391 atomic_t total_flushed; /**< Total flushes statistic */
392 atomic_t total_locks; /**< Total locks statistics */
393 #endif
394 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
395 struct drm_waitlist waitlist; /**< Pending buffers */
396 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
397 };
398
399 /**
400 * Lock data.
401 */
402 struct drm_lock_data {
403 struct drm_hw_lock *hw_lock; /**< Hardware lock */
404 struct file *filp; /**< File descr of lock holder (0=kernel) */
405 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
406 unsigned long lock_time; /**< Time of last lock in jiffies */
407 spinlock_t spinlock;
408 uint32_t kernel_waiters;
409 uint32_t user_waiters;
410 int idle_has_lock;
411 };
412
413 /**
414 * DMA data.
415 */
416 struct drm_device_dma {
417
418 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
419 int buf_count; /**< total number of buffers */
420 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
421 int seg_count;
422 int page_count; /**< number of pages */
423 unsigned long *pagelist; /**< page list */
424 unsigned long byte_count;
425 enum {
426 _DRM_DMA_USE_AGP = 0x01,
427 _DRM_DMA_USE_SG = 0x02,
428 _DRM_DMA_USE_FB = 0x04,
429 _DRM_DMA_USE_PCI_RO = 0x08
430 } flags;
431
432 };
433
434 /**
435 * AGP memory entry. Stored as a doubly linked list.
436 */
437 struct drm_agp_mem {
438 unsigned long handle; /**< handle */
439 DRM_AGP_MEM *memory;
440 unsigned long bound; /**< address */
441 int pages;
442 struct list_head head;
443 };
444
445 /**
446 * AGP data.
447 *
448 * \sa drm_agp_init() and drm_device::agp.
449 */
450 struct drm_agp_head {
451 DRM_AGP_KERN agp_info; /**< AGP device information */
452 struct list_head memory;
453 unsigned long mode; /**< AGP mode */
454 struct agp_bridge_data *bridge;
455 int enabled; /**< whether the AGP bus as been enabled */
456 int acquired; /**< whether the AGP device has been acquired */
457 unsigned long base;
458 int agp_mtrr;
459 int cant_use_aperture;
460 unsigned long page_mask;
461 };
462
463 /**
464 * Scatter-gather memory.
465 */
466 struct drm_sg_mem {
467 unsigned long handle;
468 void *virtual;
469 int pages;
470 struct page **pagelist;
471 dma_addr_t *busaddr;
472 };
473
474 struct drm_sigdata {
475 int context;
476 struct drm_hw_lock *lock;
477 };
478
479 /**
480 * Mappings list
481 */
482 struct drm_map_list {
483 struct list_head head; /**< list head */
484 drm_hash_item_t hash;
485 struct drm_map *map; /**< mapping */
486 unsigned int user_token;
487 };
488
489 typedef struct drm_map drm_local_map_t;
490
491 /**
492 * Context handle list
493 */
494 struct drm_ctx_list {
495 struct list_head head; /**< list head */
496 drm_context_t handle; /**< context handle */
497 struct drm_file *tag; /**< associated fd private data */
498 };
499
500 struct drm_vbl_sig {
501 struct list_head head;
502 unsigned int sequence;
503 struct siginfo info;
504 struct task_struct *task;
505 };
506
507 /* location of GART table */
508 #define DRM_ATI_GART_MAIN 1
509 #define DRM_ATI_GART_FB 2
510
511 #define DRM_ATI_GART_PCI 1
512 #define DRM_ATI_GART_PCIE 2
513 #define DRM_ATI_GART_IGP 3
514
515 struct drm_ati_pcigart_info {
516 int gart_table_location;
517 int gart_reg_if;
518 void *addr;
519 dma_addr_t bus_addr;
520 drm_local_map_t mapping;
521 int table_size;
522 };
523
524 /*
525 * Generic memory manager structs
526 */
527 struct drm_mm_node {
528 struct list_head fl_entry;
529 struct list_head ml_entry;
530 int free;
531 unsigned long start;
532 unsigned long size;
533 struct drm_mm *mm;
534 void *private;
535 };
536
537 struct drm_mm {
538 struct list_head fl_entry;
539 struct list_head ml_entry;
540 };
541
542 /**
543 * DRM driver structure. This structure represent the common code for
544 * a family of cards. There will one drm_device for each card present
545 * in this family
546 */
547 struct drm_device;
548
549 struct drm_driver {
550 int (*load) (struct drm_device *, unsigned long flags);
551 int (*firstopen) (struct drm_device *);
552 int (*open) (struct drm_device *, struct drm_file *);
553 void (*preclose) (struct drm_device *, struct file * filp);
554 void (*postclose) (struct drm_device *, struct drm_file *);
555 void (*lastclose) (struct drm_device *);
556 int (*unload) (struct drm_device *);
557 int (*dma_ioctl) (DRM_IOCTL_ARGS);
558 void (*dma_ready) (struct drm_device *);
559 int (*dma_quiescent) (struct drm_device *);
560 int (*context_ctor) (struct drm_device *dev, int context);
561 int (*context_dtor) (struct drm_device *dev, int context);
562 int (*kernel_context_switch) (struct drm_device *dev, int old,
563 int new);
564 void (*kernel_context_switch_unlock) (struct drm_device *dev);
565 int (*vblank_wait) (struct drm_device *dev, unsigned int *sequence);
566 int (*vblank_wait2) (struct drm_device *dev, unsigned int *sequence);
567 int (*dri_library_name) (struct drm_device *dev, char *buf);
568
569 /**
570 * Called by \c drm_device_is_agp. Typically used to determine if a
571 * card is really attached to AGP or not.
572 *
573 * \param dev DRM device handle
574 *
575 * \returns
576 * One of three values is returned depending on whether or not the
577 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
578 * (return of 1), or may or may not be AGP (return of 2).
579 */
580 int (*device_is_agp) (struct drm_device *dev);
581
582 /* these have to be filled in */
583
584 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
585 void (*irq_preinstall) (struct drm_device *dev);
586 void (*irq_postinstall) (struct drm_device *dev);
587 void (*irq_uninstall) (struct drm_device *dev);
588 void (*reclaim_buffers) (struct drm_device *dev, struct file * filp);
589 void (*reclaim_buffers_locked) (struct drm_device *dev,
590 struct file *filp);
591 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
592 struct file * filp);
593 unsigned long (*get_map_ofs) (struct drm_map * map);
594 unsigned long (*get_reg_ofs) (struct drm_device *dev);
595 void (*set_version) (struct drm_device *dev,
596 struct drm_set_version *sv);
597
598 int major;
599 int minor;
600 int patchlevel;
601 char *name;
602 char *desc;
603 char *date;
604
605 u32 driver_features;
606 int dev_priv_size;
607 drm_ioctl_desc_t *ioctls;
608 int num_ioctls;
609 struct file_operations fops;
610 struct pci_driver pci_driver;
611 };
612
613 /**
614 * DRM head structure. This structure represent a video head on a card
615 * that may contain multiple heads. Embed one per head of these in the
616 * private drm_device structure.
617 */
618 struct drm_head {
619 int minor; /**< Minor device number */
620 struct drm_device *dev;
621 struct proc_dir_entry *dev_root; /**< proc directory entry */
622 dev_t device; /**< Device number for mknod */
623 struct class_device *dev_class;
624 };
625
626 /**
627 * DRM device structure. This structure represent a complete card that
628 * may contain multiple heads.
629 */
630 struct drm_device {
631 char *unique; /**< Unique identifier: e.g., busid */
632 int unique_len; /**< Length of unique field */
633 char *devname; /**< For /proc/interrupts */
634 int if_version; /**< Highest interface version set */
635
636 int blocked; /**< Blocked due to VC switch? */
637
638 /** \name Locks */
639 /*@{ */
640 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
641 struct mutex struct_mutex; /**< For others */
642 /*@} */
643
644 /** \name Usage Counters */
645 /*@{ */
646 int open_count; /**< Outstanding files open */
647 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
648 atomic_t vma_count; /**< Outstanding vma areas open */
649 int buf_use; /**< Buffers in use -- cannot alloc */
650 atomic_t buf_alloc; /**< Buffer allocation in progress */
651 /*@} */
652
653 /** \name Performance counters */
654 /*@{ */
655 unsigned long counters;
656 enum drm_stat_type types[15];
657 atomic_t counts[15];
658 /*@} */
659
660 /** \name Authentication */
661 /*@{ */
662 struct list_head filelist;
663 drm_open_hash_t magiclist; /**< magic hash table */
664 struct list_head magicfree;
665 /*@} */
666
667 /** \name Memory management */
668 /*@{ */
669 struct list_head maplist; /**< Linked list of regions */
670 int map_count; /**< Number of mappable regions */
671 drm_open_hash_t map_hash; /**< User token hash table for maps */
672
673 /** \name Context handle management */
674 /*@{ */
675 struct list_head ctxlist; /**< Linked list of context handles */
676 int ctx_count; /**< Number of context handles */
677 struct mutex ctxlist_mutex; /**< For ctxlist */
678
679 struct drm_map **context_sareas; /**< per-context SAREA's */
680 int max_context;
681
682 struct list_head vmalist; /**< List of vmas (for debugging) */
683 struct drm_lock_data lock; /**< Information on hardware lock */
684 /*@} */
685
686 /** \name DMA queues (contexts) */
687 /*@{ */
688 int queue_count; /**< Number of active DMA queues */
689 int queue_reserved; /**< Number of reserved DMA queues */
690 int queue_slots; /**< Actual length of queuelist */
691 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
692 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
693 /*@} */
694
695 /** \name Context support */
696 /*@{ */
697 int irq; /**< Interrupt used by board */
698 int irq_enabled; /**< True if irq handler is enabled */
699 __volatile__ long context_flag; /**< Context swapping flag */
700 __volatile__ long interrupt_flag; /**< Interruption handler flag */
701 __volatile__ long dma_flag; /**< DMA dispatch flag */
702 struct timer_list timer; /**< Timer for delaying ctx switch */
703 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
704 int last_checked; /**< Last context checked for DMA */
705 int last_context; /**< Last current context */
706 unsigned long last_switch; /**< jiffies at last context switch */
707 /*@} */
708
709 struct work_struct work;
710 /** \name VBLANK IRQ support */
711 /*@{ */
712
713 wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
714 atomic_t vbl_received;
715 atomic_t vbl_received2; /**< number of secondary VBLANK interrupts */
716 spinlock_t vbl_lock;
717 struct list_head vbl_sigs; /**< signal list to send on VBLANK */
718 struct list_head vbl_sigs2; /**< signals to send on secondary VBLANK */
719 unsigned int vbl_pending;
720 spinlock_t tasklet_lock; /**< For drm_locked_tasklet */
721 void (*locked_tasklet_func)(struct drm_device *dev);
722
723 /*@} */
724 cycles_t ctx_start;
725 cycles_t lck_start;
726
727 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
728 wait_queue_head_t buf_readers; /**< Processes waiting to read */
729 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
730
731 struct drm_agp_head *agp; /**< AGP data */
732
733 struct pci_dev *pdev; /**< PCI device structure */
734 int pci_vendor; /**< PCI vendor id */
735 int pci_device; /**< PCI device id */
736 #ifdef __alpha__
737 struct pci_controller *hose;
738 #endif
739 struct drm_sg_mem *sg; /**< Scatter gather memory */
740 unsigned long *ctx_bitmap; /**< context bitmap */
741 void *dev_private; /**< device private data */
742 struct drm_sigdata sigdata; /**< For block_all_signals */
743 sigset_t sigmask;
744
745 struct drm_driver *driver;
746 drm_local_map_t *agp_buffer_map;
747 unsigned int agp_buffer_token;
748 struct drm_head primary; /**< primary screen head */
749
750 /** \name Drawable information */
751 /*@{ */
752 spinlock_t drw_lock;
753 unsigned int drw_bitfield_length;
754 u32 *drw_bitfield;
755 unsigned int drw_info_length;
756 struct drm_drawable_info **drw_info;
757 /*@} */
758 };
759
760 static __inline__ int drm_core_check_feature(struct drm_device *dev,
761 int feature)
762 {
763 return ((dev->driver->driver_features & feature) ? 1 : 0);
764 }
765
766 #ifdef __alpha__
767 #define drm_get_pci_domain(dev) dev->hose->index
768 #else
769 #define drm_get_pci_domain(dev) 0
770 #endif
771
772 #if __OS_HAS_AGP
773 static inline int drm_core_has_AGP(struct drm_device *dev)
774 {
775 return drm_core_check_feature(dev, DRIVER_USE_AGP);
776 }
777 #else
778 #define drm_core_has_AGP(dev) (0)
779 #endif
780
781 #if __OS_HAS_MTRR
782 static inline int drm_core_has_MTRR(struct drm_device *dev)
783 {
784 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
785 }
786
787 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
788
789 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
790 unsigned int flags)
791 {
792 return mtrr_add(offset, size, flags, 1);
793 }
794
795 static inline int drm_mtrr_del(int handle, unsigned long offset,
796 unsigned long size, unsigned int flags)
797 {
798 return mtrr_del(handle, offset, size);
799 }
800
801 #else
802 #define drm_core_has_MTRR(dev) (0)
803
804 #define DRM_MTRR_WC 0
805
806 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
807 unsigned int flags)
808 {
809 return 0;
810 }
811
812 static inline int drm_mtrr_del(int handle, unsigned long offset,
813 unsigned long size, unsigned int flags)
814 {
815 return 0;
816 }
817 #endif
818
819 /******************************************************************/
820 /** \name Internal function definitions */
821 /*@{*/
822
823 /* Driver support (drm_drv.h) */
824 extern int drm_init(struct drm_driver *driver);
825 extern void drm_exit(struct drm_driver *driver);
826 extern int drm_ioctl(struct inode *inode, struct file *filp,
827 unsigned int cmd, unsigned long arg);
828 extern long drm_compat_ioctl(struct file *filp,
829 unsigned int cmd, unsigned long arg);
830 extern int drm_lastclose(struct drm_device *dev);
831
832 /* Device support (drm_fops.h) */
833 extern int drm_open(struct inode *inode, struct file *filp);
834 extern int drm_stub_open(struct inode *inode, struct file *filp);
835 extern int drm_fasync(int fd, struct file *filp, int on);
836 extern int drm_release(struct inode *inode, struct file *filp);
837
838 /* Mapping support (drm_vm.h) */
839 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
840 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
841
842 /* Memory management support (drm_memory.h) */
843 #include "drm_memory.h"
844 extern void drm_mem_init(void);
845 extern int drm_mem_info(char *buf, char **start, off_t offset,
846 int request, int *eof, void *data);
847 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
848
849 extern DRM_AGP_MEM *drm_alloc_agp(struct drm_device *dev, int pages, u32 type);
850 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
851 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
852 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
853
854 /* Misc. IOCTL support (drm_ioctl.h) */
855 extern int drm_irq_by_busid(struct inode *inode, struct file *filp,
856 unsigned int cmd, unsigned long arg);
857 extern int drm_getunique(struct inode *inode, struct file *filp,
858 unsigned int cmd, unsigned long arg);
859 extern int drm_setunique(struct inode *inode, struct file *filp,
860 unsigned int cmd, unsigned long arg);
861 extern int drm_getmap(struct inode *inode, struct file *filp,
862 unsigned int cmd, unsigned long arg);
863 extern int drm_getclient(struct inode *inode, struct file *filp,
864 unsigned int cmd, unsigned long arg);
865 extern int drm_getstats(struct inode *inode, struct file *filp,
866 unsigned int cmd, unsigned long arg);
867 extern int drm_setversion(struct inode *inode, struct file *filp,
868 unsigned int cmd, unsigned long arg);
869 extern int drm_noop(struct inode *inode, struct file *filp,
870 unsigned int cmd, unsigned long arg);
871
872 /* Context IOCTL support (drm_context.h) */
873 extern int drm_resctx(struct inode *inode, struct file *filp,
874 unsigned int cmd, unsigned long arg);
875 extern int drm_addctx(struct inode *inode, struct file *filp,
876 unsigned int cmd, unsigned long arg);
877 extern int drm_modctx(struct inode *inode, struct file *filp,
878 unsigned int cmd, unsigned long arg);
879 extern int drm_getctx(struct inode *inode, struct file *filp,
880 unsigned int cmd, unsigned long arg);
881 extern int drm_switchctx(struct inode *inode, struct file *filp,
882 unsigned int cmd, unsigned long arg);
883 extern int drm_newctx(struct inode *inode, struct file *filp,
884 unsigned int cmd, unsigned long arg);
885 extern int drm_rmctx(struct inode *inode, struct file *filp,
886 unsigned int cmd, unsigned long arg);
887
888 extern int drm_ctxbitmap_init(struct drm_device *dev);
889 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
890 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
891
892 extern int drm_setsareactx(struct inode *inode, struct file *filp,
893 unsigned int cmd, unsigned long arg);
894 extern int drm_getsareactx(struct inode *inode, struct file *filp,
895 unsigned int cmd, unsigned long arg);
896
897 /* Drawable IOCTL support (drm_drawable.h) */
898 extern int drm_adddraw(struct inode *inode, struct file *filp,
899 unsigned int cmd, unsigned long arg);
900 extern int drm_rmdraw(struct inode *inode, struct file *filp,
901 unsigned int cmd, unsigned long arg);
902 extern int drm_update_drawable_info(struct inode *inode, struct file *filp,
903 unsigned int cmd, unsigned long arg);
904 extern struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
905 drm_drawable_t id);
906
907 /* Authentication IOCTL support (drm_auth.h) */
908 extern int drm_getmagic(struct inode *inode, struct file *filp,
909 unsigned int cmd, unsigned long arg);
910 extern int drm_authmagic(struct inode *inode, struct file *filp,
911 unsigned int cmd, unsigned long arg);
912
913 /* Locking IOCTL support (drm_lock.h) */
914 extern int drm_lock(struct inode *inode, struct file *filp,
915 unsigned int cmd, unsigned long arg);
916 extern int drm_unlock(struct inode *inode, struct file *filp,
917 unsigned int cmd, unsigned long arg);
918 extern int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
919 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
920 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
921 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
922
923 /*
924 * These are exported to drivers so that they can implement fencing using
925 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
926 */
927
928 extern int drm_i_have_hw_lock(struct file *filp);
929 extern int drm_kernel_take_hw_lock(struct file *filp);
930
931 /* Buffer management support (drm_bufs.h) */
932 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
933 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
934 extern int drm_addmap(struct drm_device *dev, unsigned int offset,
935 unsigned int size, enum drm_map_type type,
936 enum drm_map_flags flags, drm_local_map_t ** map_ptr);
937 extern int drm_addmap_ioctl(struct inode *inode, struct file *filp,
938 unsigned int cmd, unsigned long arg);
939 extern int drm_rmmap(struct drm_device *dev, drm_local_map_t * map);
940 extern int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t * map);
941 extern int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
942 unsigned int cmd, unsigned long arg);
943
944 extern int drm_order(unsigned long size);
945 extern int drm_addbufs(struct inode *inode, struct file *filp,
946 unsigned int cmd, unsigned long arg);
947 extern int drm_infobufs(struct inode *inode, struct file *filp,
948 unsigned int cmd, unsigned long arg);
949 extern int drm_markbufs(struct inode *inode, struct file *filp,
950 unsigned int cmd, unsigned long arg);
951 extern int drm_freebufs(struct inode *inode, struct file *filp,
952 unsigned int cmd, unsigned long arg);
953 extern int drm_mapbufs(struct inode *inode, struct file *filp,
954 unsigned int cmd, unsigned long arg);
955 extern unsigned long drm_get_resource_start(struct drm_device *dev,
956 unsigned int resource);
957 extern unsigned long drm_get_resource_len(struct drm_device *dev,
958 unsigned int resource);
959
960 /* DMA support (drm_dma.h) */
961 extern int drm_dma_setup(struct drm_device *dev);
962 extern void drm_dma_takedown(struct drm_device *dev);
963 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
964 extern void drm_core_reclaim_buffers(struct drm_device *dev, struct file *filp);
965
966 /* IRQ support (drm_irq.h) */
967 extern int drm_control(struct inode *inode, struct file *filp,
968 unsigned int cmd, unsigned long arg);
969 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
970 extern int drm_irq_uninstall(struct drm_device *dev);
971 extern void drm_driver_irq_preinstall(struct drm_device *dev);
972 extern void drm_driver_irq_postinstall(struct drm_device *dev);
973 extern void drm_driver_irq_uninstall(struct drm_device *dev);
974
975 extern int drm_wait_vblank(struct inode *inode, struct file *filp,
976 unsigned int cmd, unsigned long arg);
977 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
978 extern void drm_vbl_send_signals(struct drm_device *dev);
979 extern void drm_locked_tasklet(struct drm_device *dev, void(*func)(struct drm_device*));
980
981 /* AGP/GART support (drm_agpsupport.h) */
982 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
983 extern int drm_agp_acquire(struct drm_device *dev);
984 extern int drm_agp_acquire_ioctl(struct inode *inode, struct file *filp,
985 unsigned int cmd, unsigned long arg);
986 extern int drm_agp_release(struct drm_device *dev);
987 extern int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
988 unsigned int cmd, unsigned long arg);
989 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
990 extern int drm_agp_enable_ioctl(struct inode *inode, struct file *filp,
991 unsigned int cmd, unsigned long arg);
992 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info * info);
993 extern int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
994 unsigned int cmd, unsigned long arg);
995 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
996 extern int drm_agp_alloc_ioctl(struct inode *inode, struct file *filp,
997 unsigned int cmd, unsigned long arg);
998 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
999 extern int drm_agp_free_ioctl(struct inode *inode, struct file *filp,
1000 unsigned int cmd, unsigned long arg);
1001 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1002 extern int drm_agp_unbind_ioctl(struct inode *inode, struct file *filp,
1003 unsigned int cmd, unsigned long arg);
1004 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1005 extern int drm_agp_bind_ioctl(struct inode *inode, struct file *filp,
1006 unsigned int cmd, unsigned long arg);
1007 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge,
1008 size_t pages, u32 type);
1009 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1010 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1011 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1012
1013 /* Stub support (drm_stub.h) */
1014 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1015 struct drm_driver *driver);
1016 extern int drm_put_dev(struct drm_device *dev);
1017 extern int drm_put_head(struct drm_head *head);
1018 extern unsigned int drm_debug;
1019 extern unsigned int drm_cards_limit;
1020 extern struct drm_head **drm_heads;
1021 extern struct class *drm_class;
1022 extern struct proc_dir_entry *drm_proc_root;
1023
1024 extern drm_local_map_t *drm_getsarea(struct drm_device *dev);
1025
1026 /* Proc support (drm_proc.h) */
1027 extern int drm_proc_init(struct drm_device *dev,
1028 int minor,
1029 struct proc_dir_entry *root,
1030 struct proc_dir_entry **dev_root);
1031 extern int drm_proc_cleanup(int minor,
1032 struct proc_dir_entry *root,
1033 struct proc_dir_entry *dev_root);
1034
1035 /* Scatter Gather Support (drm_scatter.h) */
1036 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1037 extern int drm_sg_alloc(struct inode *inode, struct file *filp,
1038 unsigned int cmd, unsigned long arg);
1039 extern int drm_sg_free(struct inode *inode, struct file *filp,
1040 unsigned int cmd, unsigned long arg);
1041
1042 /* ATI PCIGART support (ati_pcigart.h) */
1043 extern int drm_ati_pcigart_init(struct drm_device *dev,
1044 struct drm_ati_pcigart_info * gart_info);
1045 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1046 struct drm_ati_pcigart_info * gart_info);
1047
1048 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1049 size_t align, dma_addr_t maxaddr);
1050 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1051 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1052
1053 /* sysfs support (drm_sysfs.c) */
1054 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1055 extern void drm_sysfs_destroy(struct class *cs);
1056 extern struct class_device *drm_sysfs_device_add(struct class *cs,
1057 struct drm_head *head);
1058 extern void drm_sysfs_device_remove(struct class_device *class_dev);
1059
1060 /*
1061 * Basic memory manager support (drm_mm.c)
1062 */
1063 extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node * parent,
1064 unsigned long size,
1065 unsigned alignment);
1066 void drm_mm_put_block(struct drm_mm_node * cur);
1067 extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, unsigned long size,
1068 unsigned alignment, int best_match);
1069 extern int drm_mm_init(struct drm_mm *mm, unsigned long start, unsigned long size);
1070 extern void drm_mm_takedown(struct drm_mm *mm);
1071 extern int drm_mm_clean(struct drm_mm *mm);
1072 extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
1073 extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, unsigned long size);
1074 extern int drm_mm_add_space_to_tail(struct drm_mm *mm, unsigned long size);
1075
1076 extern void drm_core_ioremap(struct drm_map *map, struct drm_device *dev);
1077 extern void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev);
1078
1079 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev,
1080 unsigned int token)
1081 {
1082 struct drm_map_list *_entry;
1083 list_for_each_entry(_entry, &dev->maplist, head)
1084 if (_entry->user_token == token)
1085 return _entry->map;
1086 return NULL;
1087 }
1088
1089 static __inline__ int drm_device_is_agp(struct drm_device *dev)
1090 {
1091 if (dev->driver->device_is_agp != NULL) {
1092 int err = (*dev->driver->device_is_agp) (dev);
1093
1094 if (err != 2) {
1095 return err;
1096 }
1097 }
1098
1099 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1100 }
1101
1102 static __inline__ int drm_device_is_pcie(struct drm_device *dev)
1103 {
1104 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1105 }
1106
1107 static __inline__ void drm_core_dropmap(struct drm_map *map)
1108 {
1109 }
1110
1111 #ifndef DEBUG_MEMORY
1112 /** Wrapper around kmalloc() */
1113 static __inline__ void *drm_alloc(size_t size, int area)
1114 {
1115 return kmalloc(size, GFP_KERNEL);
1116 }
1117
1118 /** Wrapper around kfree() */
1119 static __inline__ void drm_free(void *pt, size_t size, int area)
1120 {
1121 kfree(pt);
1122 }
1123
1124 /** Wrapper around kcalloc() */
1125 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1126 {
1127 return kcalloc(nmemb, size, GFP_KERNEL);
1128 }
1129 #else
1130 extern void *drm_alloc(size_t size, int area);
1131 extern void drm_free(void *pt, size_t size, int area);
1132 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1133 #endif
1134
1135 /*@}*/
1136
1137 extern unsigned long drm_core_get_map_ofs(struct drm_map * map);
1138 extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
1139
1140 #endif /* __KERNEL__ */
1141 #endif
Support for the Chinese Samsung S3C2440 based development boards