?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / char / drm / drmP.h
blob21f4c54e1a8d7143c9a102696bccd0bce3e8950b
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/version.h>
57 #include <linux/jiffies.h>
58 #include <linux/smp_lock.h> /* For (un)lock_kernel */
59 #include <linux/mm.h>
60 #include <linux/cdev.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
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 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19)
164 static inline struct page * vmalloc_to_page(void * vmalloc_addr)
165 {
166 unsigned long addr = (unsigned long) vmalloc_addr;
167 struct page *page = NULL;
168 pgd_t *pgd = pgd_offset_k(addr);
169 pmd_t *pmd;
170 pte_t *ptep, pte;
171
172 if (!pgd_none(*pgd)) {
173 pmd = pmd_offset(pgd, addr);
174 if (!pmd_none(*pmd)) {
175 preempt_disable();
176 ptep = pte_offset_map(pmd, addr);
177 pte = *ptep;
178 if (pte_present(pte))
179 page = pte_page(pte);
180 pte_unmap(ptep);
181 preempt_enable();
182 }
183 }
184 return page;
185 }
186 #endif
187
188 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
189 #define DRM_RPR_ARG(vma)
190 #else
191 #define DRM_RPR_ARG(vma) vma,
192 #endif
193
194 #define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
195
196 /*@}*/
197
198
199 /***********************************************************************/
200 /** \name Macros to make printk easier */
201 /*@{*/
202
203 /**
204 * Error output.
205 *
206 * \param fmt printf() like format string.
207 * \param arg arguments
208 */
209 #define DRM_ERROR(fmt, arg...) \
210 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg)
211
212 /**
213 * Memory error output.
214 *
215 * \param area memory area where the error occurred.
216 * \param fmt printf() like format string.
217 * \param arg arguments
218 */
219 #define DRM_MEM_ERROR(area, fmt, arg...) \
220 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \
221 drm_mem_stats[area].name , ##arg)
222
223 #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
224
225 /**
226 * Debug output.
227 *
228 * \param fmt printf() like format string.
229 * \param arg arguments
230 */
231 #if DRM_DEBUG_CODE
232 #define DRM_DEBUG(fmt, arg...) \
233 do { \
234 if ( drm_debug ) \
235 printk(KERN_DEBUG \
236 "[" DRM_NAME ":%s] " fmt , \
237 __FUNCTION__ , ##arg); \
238 } while (0)
239 #else
240 #define DRM_DEBUG(fmt, arg...) do { } while (0)
241 #endif
242
243 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
244
245 #define DRM_PROC_PRINT(fmt, arg...) \
246 len += sprintf(&buf[len], fmt , ##arg); \
247 if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
248
249 #define DRM_PROC_PRINT_RET(ret, fmt, arg...) \
250 len += sprintf(&buf[len], fmt , ##arg); \
251 if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
252
253 /*@}*/
254
255
256 /***********************************************************************/
257 /** \name Internal types and structures */
258 /*@{*/
259
260 #define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
261 #define DRM_MIN(a,b) ((a)<(b)?(a):(b))
262 #define DRM_MAX(a,b) ((a)>(b)?(a):(b))
263
264 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
265 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
266 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
267
268 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
269 /**
270 * Get the private SAREA mapping.
271 *
272 * \param _dev DRM device.
273 * \param _ctx context number.
274 * \param _map output mapping.
275 */
276 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \
277 (_map) = (_dev)->context_sareas[_ctx]; \
278 } while(0)
279
280 /**
281 * Test that the hardware lock is held by the caller, returning otherwise.
282 *
283 * \param dev DRM device.
284 * \param filp file pointer of the caller.
285 */
286 #define LOCK_TEST_WITH_RETURN( dev, filp ) \
287 do { \
288 if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) || \
289 dev->lock.filp != filp ) { \
290 DRM_ERROR( "%s called without lock held\n", \
291 __FUNCTION__ ); \
292 return -EINVAL; \
293 } \
294 } while (0)
295
296 /**
297 * Copy and IOCTL return string to user space
298 */
299 #define DRM_COPY( name, value ) \
300 len = strlen( value ); \
301 if ( len > name##_len ) len = name##_len; \
302 name##_len = strlen( value ); \
303 if ( len && name ) { \
304 if ( copy_to_user( name, value, len ) ) \
305 return -EFAULT; \
306 }
307
308 /**
309 * Ioctl function type.
310 *
311 * \param inode device inode.
312 * \param filp file pointer.
313 * \param cmd command.
314 * \param arg argument.
315 */
316 typedef int drm_ioctl_t( struct inode *inode, struct file *filp,
317 unsigned int cmd, unsigned long arg );
318
319 typedef struct drm_ioctl_desc {
320 drm_ioctl_t *func;
321 int auth_needed;
322 int root_only;
323 } drm_ioctl_desc_t;
324
325 typedef struct drm_devstate {
326 pid_t owner; /**< X server pid holding x_lock */
327 } drm_devstate_t;
328
329 typedef struct drm_magic_entry {
330 drm_magic_t magic;
331 struct drm_file *priv;
332 struct drm_magic_entry *next;
333 } drm_magic_entry_t;
334
335 typedef struct drm_magic_head {
336 struct drm_magic_entry *head;
337 struct drm_magic_entry *tail;
338 } drm_magic_head_t;
339
340 typedef struct drm_vma_entry {
341 struct vm_area_struct *vma;
342 struct drm_vma_entry *next;
343 pid_t pid;
344 } drm_vma_entry_t;
345
346 /**
347 * DMA buffer.
348 */
349 typedef struct drm_buf {
350 int idx; /**< Index into master buflist */
351 int total; /**< Buffer size */
352 int order; /**< log-base-2(total) */
353 int used; /**< Amount of buffer in use (for DMA) */
354 unsigned long offset; /**< Byte offset (used internally) */
355 void *address; /**< Address of buffer */
356 unsigned long bus_address; /**< Bus address of buffer */
357 struct drm_buf *next; /**< Kernel-only: used for free list */
358 __volatile__ int waiting; /**< On kernel DMA queue */
359 __volatile__ int pending; /**< On hardware DMA queue */
360 wait_queue_head_t dma_wait; /**< Processes waiting */
361 struct file *filp; /**< Pointer to holding file descr */
362 int context; /**< Kernel queue for this buffer */
363 int while_locked;/**< Dispatch this buffer while locked */
364 enum {
365 DRM_LIST_NONE = 0,
366 DRM_LIST_FREE = 1,
367 DRM_LIST_WAIT = 2,
368 DRM_LIST_PEND = 3,
369 DRM_LIST_PRIO = 4,
370 DRM_LIST_RECLAIM = 5
371 } list; /**< Which list we're on */
372
373 int dev_priv_size; /**< Size of buffer private storage */
374 void *dev_private; /**< Per-buffer private storage */
375 } drm_buf_t;
376
377
378 /** bufs is one longer than it has to be */
379 typedef struct drm_waitlist {
380 int count; /**< Number of possible buffers */
381 drm_buf_t **bufs; /**< List of pointers to buffers */
382 drm_buf_t **rp; /**< Read pointer */
383 drm_buf_t **wp; /**< Write pointer */
384 drm_buf_t **end; /**< End pointer */
385 spinlock_t read_lock;
386 spinlock_t write_lock;
387 } drm_waitlist_t;
388
389 typedef struct drm_freelist {
390 int initialized; /**< Freelist in use */
391 atomic_t count; /**< Number of free buffers */
392 drm_buf_t *next; /**< End pointer */
393
394 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
395 int low_mark; /**< Low water mark */
396 int high_mark; /**< High water mark */
397 atomic_t wfh; /**< If waiting for high mark */
398 spinlock_t lock;
399 } drm_freelist_t;
400
401 /**
402 * Buffer entry. There is one of this for each buffer size order.
403 */
404 typedef struct drm_buf_entry {
405 int buf_size; /**< size */
406 int buf_count; /**< number of buffers */
407 drm_buf_t *buflist; /**< buffer list */
408 int seg_count;
409 int page_order;
410 unsigned long *seglist;
411
412 drm_freelist_t freelist;
413 } drm_buf_entry_t;
414
415 /** File private data */
416 typedef struct drm_file {
417 int authenticated;
418 int minor;
419 pid_t pid;
420 uid_t uid;
421 drm_magic_t magic;
422 unsigned long ioctl_count;
423 struct drm_file *next;
424 struct drm_file *prev;
425 struct drm_head *head;
426 int remove_auth_on_close;
427 unsigned long lock_count;
428 void *driver_priv;
429 } drm_file_t;
430
431 /** Wait queue */
432 typedef struct drm_queue {
433 atomic_t use_count; /**< Outstanding uses (+1) */
434 atomic_t finalization; /**< Finalization in progress */
435 atomic_t block_count; /**< Count of processes waiting */
436 atomic_t block_read; /**< Queue blocked for reads */
437 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
438 atomic_t block_write; /**< Queue blocked for writes */
439 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
440 #if 1
441 atomic_t total_queued; /**< Total queued statistic */
442 atomic_t total_flushed;/**< Total flushes statistic */
443 atomic_t total_locks; /**< Total locks statistics */
444 #endif
445 drm_ctx_flags_t flags; /**< Context preserving and 2D-only */
446 drm_waitlist_t waitlist; /**< Pending buffers */
447 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
448 } drm_queue_t;
449
450 /**
451 * Lock data.
452 */
453 typedef struct drm_lock_data {
454 drm_hw_lock_t *hw_lock; /**< Hardware lock */
455 struct file *filp; /**< File descr of lock holder (0=kernel) */
456 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
457 unsigned long lock_time; /**< Time of last lock in jiffies */
458 } drm_lock_data_t;
459
460 /**
461 * DMA data.
462 */
463 typedef struct drm_device_dma {
464
465 drm_buf_entry_t bufs[DRM_MAX_ORDER+1]; /**< buffers, grouped by their size order */
466 int buf_count; /**< total number of buffers */
467 drm_buf_t **buflist; /**< Vector of pointers into drm_device_dma::bufs */
468 int seg_count;
469 int page_count; /**< number of pages */
470 unsigned long *pagelist; /**< page list */
471 unsigned long byte_count;
472 enum {
473 _DRM_DMA_USE_AGP = 0x01,
474 _DRM_DMA_USE_SG = 0x02
475 } flags;
476
477 } drm_device_dma_t;
478
479 /**
480 * AGP memory entry. Stored as a doubly linked list.
481 */
482 typedef struct drm_agp_mem {
483 unsigned long handle; /**< handle */
484 DRM_AGP_MEM *memory;
485 unsigned long bound; /**< address */
486 int pages;
487 struct drm_agp_mem *prev; /**< previous entry */
488 struct drm_agp_mem *next; /**< next entry */
489 } drm_agp_mem_t;
490
491 /**
492 * AGP data.
493 *
494 * \sa drm_agp_init() and drm_device::agp.
495 */
496 typedef struct drm_agp_head {
497 DRM_AGP_KERN agp_info; /**< AGP device information */
498 drm_agp_mem_t *memory; /**< memory entries */
499 unsigned long mode; /**< AGP mode */
500 struct agp_bridge_data *bridge;
501 int enabled; /**< whether the AGP bus as been enabled */
502 int acquired; /**< whether the AGP device has been acquired */
503 unsigned long base;
504 int agp_mtrr;
505 int cant_use_aperture;
506 unsigned long page_mask;
507 } drm_agp_head_t;
508
509 /**
510 * Scatter-gather memory.
511 */
512 typedef struct drm_sg_mem {
513 unsigned long handle;
514 void *virtual;
515 int pages;
516 struct page **pagelist;
517 dma_addr_t *busaddr;
518 } drm_sg_mem_t;
519
520 typedef struct drm_sigdata {
521 int context;
522 drm_hw_lock_t *lock;
523 } drm_sigdata_t;
524
525 /**
526 * Mappings list
527 */
528 typedef struct drm_map_list {
529 struct list_head head; /**< list head */
530 drm_map_t *map; /**< mapping */
531 } drm_map_list_t;
532
533 typedef drm_map_t drm_local_map_t;
534
535 /**
536 * Context handle list
537 */
538 typedef struct drm_ctx_list {
539 struct list_head head; /**< list head */
540 drm_context_t handle; /**< context handle */
541 drm_file_t *tag; /**< associated fd private data */
542 } drm_ctx_list_t;
543
544
545 typedef struct drm_vbl_sig {
546 struct list_head head;
547 unsigned int sequence;
548 struct siginfo info;
549 struct task_struct *task;
550 } drm_vbl_sig_t;
551
552
553 /**
554 * DRM driver structure. This structure represent the common code for
555 * a family of cards. There will one drm_device for each card present
556 * in this family
557 */
558 struct drm_device;
559
560 struct drm_driver {
561 int (*preinit)(struct drm_device *, unsigned long flags);
562 void (*prerelease)(struct drm_device *, struct file *filp);
563 void (*pretakedown)(struct drm_device *);
564 int (*postcleanup)(struct drm_device *);
565 int (*presetup)(struct drm_device *);
566 int (*postsetup)(struct drm_device *);
567 int (*dma_ioctl)( DRM_IOCTL_ARGS );
568 int (*open_helper)(struct drm_device *, drm_file_t *);
569 void (*free_filp_priv)(struct drm_device *, drm_file_t *);
570 void (*release)(struct drm_device *, struct file *filp);
571 void (*dma_ready)(struct drm_device *);
572 int (*dma_quiescent)(struct drm_device *);
573 int (*context_ctor)(struct drm_device *dev, int context);
574 int (*context_dtor)(struct drm_device *dev, int context);
575 int (*kernel_context_switch)(struct drm_device *dev, int old, int new);
576 void (*kernel_context_switch_unlock)(struct drm_device *dev, drm_lock_t *lock);
577 int (*vblank_wait)(struct drm_device *dev, unsigned int *sequence);
578 /* these have to be filled in */
579 int (*postinit)(struct drm_device *, unsigned long flags);
580 irqreturn_t (*irq_handler)( DRM_IRQ_ARGS );
581 void (*irq_preinstall)(struct drm_device *dev);
582 void (*irq_postinstall)(struct drm_device *dev);
583 void (*irq_uninstall)(struct drm_device *dev);
584 void (*reclaim_buffers)(struct drm_device *dev, struct file *filp);
585 unsigned long (*get_map_ofs)(drm_map_t *map);
586 unsigned long (*get_reg_ofs)(struct drm_device *dev);
587 void (*set_version)(struct drm_device *dev, drm_set_version_t *sv);
588 int (*version)(drm_version_t *version);
589 u32 driver_features;
590 int dev_priv_size;
591 drm_ioctl_desc_t *ioctls;
592 int num_ioctls;
593 struct file_operations fops;
594 struct pci_driver pci_driver;
595 };
596
597 /**
598 * DRM head structure. This structure represent a video head on a card
599 * that may contain multiple heads. Embed one per head of these in the
600 * private drm_device structure.
601 */
602 typedef struct drm_head {
603 int minor; /**< Minor device number */
604 struct drm_device *dev;
605 struct proc_dir_entry *dev_root; /**< proc directory entry */
606 dev_t device; /**< Device number for mknod */
607 struct class_device *dev_class;
608 } drm_head_t;
609
610 /**
611 * DRM device structure. This structure represent a complete card that
612 * may contain multiple heads.
613 */
614 typedef struct drm_device {
615 char *unique; /**< Unique identifier: e.g., busid */
616 int unique_len; /**< Length of unique field */
617 char *devname; /**< For /proc/interrupts */
618 int if_version; /**< Highest interface version set */
619
620 int blocked; /**< Blocked due to VC switch? */
621
622 /** \name Locks */
623 /*@{*/
624 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
625 struct semaphore struct_sem; /**< For others */
626 /*@}*/
627
628 /** \name Usage Counters */
629 /*@{*/
630 int open_count; /**< Outstanding files open */
631 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
632 atomic_t vma_count; /**< Outstanding vma areas open */
633 int buf_use; /**< Buffers in use -- cannot alloc */
634 atomic_t buf_alloc; /**< Buffer allocation in progress */
635 /*@}*/
636
637 /** \name Performance counters */
638 /*@{*/
639 unsigned long counters;
640 drm_stat_type_t types[15];
641 atomic_t counts[15];
642 /*@}*/
643
644 /** \name Authentication */
645 /*@{*/
646 drm_file_t *file_first; /**< file list head */
647 drm_file_t *file_last; /**< file list tail */
648 drm_magic_head_t magiclist[DRM_HASH_SIZE]; /**< magic hash table */
649 /*@}*/
650
651 /** \name Memory management */
652 /*@{*/
653 drm_map_list_t *maplist; /**< Linked list of regions */
654 int map_count; /**< Number of mappable regions */
655
656 /** \name Context handle management */
657 /*@{*/
658 drm_ctx_list_t *ctxlist; /**< Linked list of context handles */
659 int ctx_count; /**< Number of context handles */
660 struct semaphore ctxlist_sem; /**< For ctxlist */
661
662 drm_map_t **context_sareas; /**< per-context SAREA's */
663 int max_context;
664
665 drm_vma_entry_t *vmalist; /**< List of vmas (for debugging) */
666 drm_lock_data_t lock; /**< Information on hardware lock */
667 /*@}*/
668
669 /** \name DMA queues (contexts) */
670 /*@{*/
671 int queue_count; /**< Number of active DMA queues */
672 int queue_reserved; /**< Number of reserved DMA queues */
673 int queue_slots; /**< Actual length of queuelist */
674 drm_queue_t **queuelist; /**< Vector of pointers to DMA queues */
675 drm_device_dma_t *dma; /**< Optional pointer for DMA support */
676 /*@}*/
677
678 /** \name Context support */
679 /*@{*/
680 int irq; /**< Interrupt used by board */
681 int irq_enabled; /**< True if irq handler is enabled */
682 __volatile__ long context_flag; /**< Context swapping flag */
683 __volatile__ long interrupt_flag; /**< Interruption handler flag */
684 __volatile__ long dma_flag; /**< DMA dispatch flag */
685 struct timer_list timer; /**< Timer for delaying ctx switch */
686 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
687 int last_checked; /**< Last context checked for DMA */
688 int last_context; /**< Last current context */
689 unsigned long last_switch; /**< jiffies at last context switch */
690 /*@}*/
691
692 struct work_struct work;
693 /** \name VBLANK IRQ support */
694 /*@{*/
695
696 wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
697 atomic_t vbl_received;
698 spinlock_t vbl_lock;
699 drm_vbl_sig_t vbl_sigs; /**< signal list to send on VBLANK */
700 unsigned int vbl_pending;
701
702 /*@}*/
703 cycles_t ctx_start;
704 cycles_t lck_start;
705
706 char buf[DRM_BSZ]; /**< Output buffer */
707 char *buf_rp; /**< Read pointer */
708 char *buf_wp; /**< Write pointer */
709 char *buf_end; /**< End pointer */
710 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
711 wait_queue_head_t buf_readers; /**< Processes waiting to read */
712 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
713
714 drm_agp_head_t *agp; /**< AGP data */
715
716 struct pci_dev *pdev; /**< PCI device structure */
717 int pci_domain; /**< PCI bus domain number */
718 int pci_bus; /**< PCI bus number */
719 int pci_slot; /**< PCI slot number */
720 int pci_func; /**< PCI function number */
721 #ifdef __alpha__
722 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,3)
723 struct pci_controler *hose;
724 #else
725 struct pci_controller *hose;
726 #endif
727 #endif
728 drm_sg_mem_t *sg; /**< Scatter gather memory */
729 unsigned long *ctx_bitmap; /**< context bitmap */
730 void *dev_private; /**< device private data */
731 drm_sigdata_t sigdata; /**< For block_all_signals */
732 sigset_t sigmask;
733
734 struct drm_driver *driver;
735 drm_local_map_t *agp_buffer_map;
736 drm_head_t primary; /**< primary screen head */
737 } drm_device_t;
738
739 static __inline__ int drm_core_check_feature(struct drm_device *dev, int feature)
740 {
741 return ((dev->driver->driver_features & feature) ? 1 : 0);
742 }
743
744 #if __OS_HAS_AGP
745 static inline int drm_core_has_AGP(struct drm_device *dev)
746 {
747 return drm_core_check_feature(dev, DRIVER_USE_AGP);
748 }
749 #else
750 #define drm_core_has_AGP(dev) (0)
751 #endif
752
753 #if __OS_HAS_MTRR
754 static inline int drm_core_has_MTRR(struct drm_device *dev)
755 {
756 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
757 }
758 #else
759 #define drm_core_has_MTRR(dev) (0)
760 #endif
761
762 /******************************************************************/
763 /** \name Internal function definitions */
764 /*@{*/
765
766 /* Misc. support (drm_init.h) */
767 extern int drm_flags;
768 extern void drm_parse_options( char *s );
769 extern int drm_cpu_valid( void );
770
771 /* Driver support (drm_drv.h) */
772 extern int drm_init(struct drm_driver *driver);
773 extern void drm_exit(struct drm_driver *driver);
774 extern int drm_version(struct inode *inode, struct file *filp,
775 unsigned int cmd, unsigned long arg);
776 extern int drm_ioctl(struct inode *inode, struct file *filp,
777 unsigned int cmd, unsigned long arg);
778 extern int drm_takedown(drm_device_t * dev);
779
780 /* Device support (drm_fops.h) */
781 extern int drm_open(struct inode *inode, struct file *filp);
782 extern int drm_stub_open(struct inode *inode, struct file *filp);
783 extern int drm_open_helper(struct inode *inode, struct file *filp,
784 drm_device_t *dev);
785 extern int drm_flush(struct file *filp);
786 extern int drm_fasync(int fd, struct file *filp, int on);
787 extern int drm_release(struct inode *inode, struct file *filp);
788
789 /* Mapping support (drm_vm.h) */
790 extern void drm_vm_open(struct vm_area_struct *vma);
791 extern void drm_vm_close(struct vm_area_struct *vma);
792 extern void drm_vm_shm_close(struct vm_area_struct *vma);
793 extern int drm_mmap_dma(struct file *filp,
794 struct vm_area_struct *vma);
795 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
796 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
797 extern ssize_t drm_read(struct file *filp, char __user *buf, size_t count, loff_t *off);
798
799 /* Memory management support (drm_memory.h) */
800 #include "drm_memory.h"
801 extern void drm_mem_init(void);
802 extern int drm_mem_info(char *buf, char **start, off_t offset,
803 int request, int *eof, void *data);
804 extern void *drm_calloc(size_t nmemb, size_t size, int area);
805 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size,
806 int area);
807 extern unsigned long drm_alloc_pages(int order, int area);
808 extern void drm_free_pages(unsigned long address, int order,
809 int area);
810 extern void *drm_ioremap(unsigned long offset, unsigned long size, drm_device_t *dev);
811 extern void *drm_ioremap_nocache(unsigned long offset, unsigned long size,
812 drm_device_t *dev);
813 extern void drm_ioremapfree(void *pt, unsigned long size, drm_device_t *dev);
814
815 extern DRM_AGP_MEM *drm_alloc_agp(struct agp_bridge_data *bridge, int pages, u32 type);
816 extern int drm_free_agp(DRM_AGP_MEM *handle, int pages);
817 extern int drm_bind_agp(DRM_AGP_MEM *handle, unsigned int start);
818 extern int drm_unbind_agp(DRM_AGP_MEM *handle);
819
820 /* Misc. IOCTL support (drm_ioctl.h) */
821 extern int drm_irq_by_busid(struct inode *inode, struct file *filp,
822 unsigned int cmd, unsigned long arg);
823 extern int drm_getunique(struct inode *inode, struct file *filp,
824 unsigned int cmd, unsigned long arg);
825 extern int drm_setunique(struct inode *inode, struct file *filp,
826 unsigned int cmd, unsigned long arg);
827 extern int drm_getmap(struct inode *inode, struct file *filp,
828 unsigned int cmd, unsigned long arg);
829 extern int drm_getclient(struct inode *inode, struct file *filp,
830 unsigned int cmd, unsigned long arg);
831 extern int drm_getstats(struct inode *inode, struct file *filp,
832 unsigned int cmd, unsigned long arg);
833 extern int drm_setversion(struct inode *inode, struct file *filp,
834 unsigned int cmd, unsigned long arg);
835
836 /* Context IOCTL support (drm_context.h) */
837 extern int drm_resctx( struct inode *inode, struct file *filp,
838 unsigned int cmd, unsigned long arg );
839 extern int drm_addctx( struct inode *inode, struct file *filp,
840 unsigned int cmd, unsigned long arg );
841 extern int drm_modctx( struct inode *inode, struct file *filp,
842 unsigned int cmd, unsigned long arg );
843 extern int drm_getctx( struct inode *inode, struct file *filp,
844 unsigned int cmd, unsigned long arg );
845 extern int drm_switchctx( struct inode *inode, struct file *filp,
846 unsigned int cmd, unsigned long arg );
847 extern int drm_newctx( struct inode *inode, struct file *filp,
848 unsigned int cmd, unsigned long arg );
849 extern int drm_rmctx( struct inode *inode, struct file *filp,
850 unsigned int cmd, unsigned long arg );
851
852 extern int drm_context_switch(drm_device_t *dev, int old, int new);
853 extern int drm_context_switch_complete(drm_device_t *dev, int new);
854
855 extern int drm_ctxbitmap_init( drm_device_t *dev );
856 extern void drm_ctxbitmap_cleanup( drm_device_t *dev );
857 extern void drm_ctxbitmap_free( drm_device_t *dev, int ctx_handle );
858
859 extern int drm_setsareactx( struct inode *inode, struct file *filp,
860 unsigned int cmd, unsigned long arg );
861 extern int drm_getsareactx( struct inode *inode, struct file *filp,
862 unsigned int cmd, unsigned long arg );
863
864 /* Drawable IOCTL support (drm_drawable.h) */
865 extern int drm_adddraw(struct inode *inode, struct file *filp,
866 unsigned int cmd, unsigned long arg);
867 extern int drm_rmdraw(struct inode *inode, struct file *filp,
868 unsigned int cmd, unsigned long arg);
869
870
871 /* Authentication IOCTL support (drm_auth.h) */
872 extern int drm_add_magic(drm_device_t *dev, drm_file_t *priv,
873 drm_magic_t magic);
874 extern int drm_remove_magic(drm_device_t *dev, drm_magic_t magic);
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 /* Placeholder for ioctls past */
881 extern int drm_noop(struct inode *inode, struct file *filp,
882 unsigned int cmd, unsigned long arg);
883
884 /* Locking IOCTL support (drm_lock.h) */
885 extern int drm_lock(struct inode *inode, struct file *filp,
886 unsigned int cmd, unsigned long arg);
887 extern int drm_unlock(struct inode *inode, struct file *filp,
888 unsigned int cmd, unsigned long arg);
889 extern int drm_lock_take(__volatile__ unsigned int *lock,
890 unsigned int context);
891 extern int drm_lock_transfer(drm_device_t *dev,
892 __volatile__ unsigned int *lock,
893 unsigned int context);
894 extern int drm_lock_free(drm_device_t *dev,
895 __volatile__ unsigned int *lock,
896 unsigned int context);
897 extern int drm_notifier(void *priv);
898
899 /* Buffer management support (drm_bufs.h) */
900 extern int drm_order( unsigned long size );
901 extern int drm_addmap( struct inode *inode, struct file *filp,
902 unsigned int cmd, unsigned long arg );
903 extern int drm_rmmap( struct inode *inode, struct file *filp,
904 unsigned int cmd, unsigned long arg );
905 extern int drm_addbufs( struct inode *inode, struct file *filp,
906 unsigned int cmd, unsigned long arg );
907 extern int drm_infobufs( struct inode *inode, struct file *filp,
908 unsigned int cmd, unsigned long arg );
909 extern int drm_markbufs( struct inode *inode, struct file *filp,
910 unsigned int cmd, unsigned long arg );
911 extern int drm_freebufs( struct inode *inode, struct file *filp,
912 unsigned int cmd, unsigned long arg );
913 extern int drm_mapbufs( struct inode *inode, struct file *filp,
914 unsigned int cmd, unsigned long arg );
915
916 /* DMA support (drm_dma.h) */
917 extern int drm_dma_setup(drm_device_t *dev);
918 extern void drm_dma_takedown(drm_device_t *dev);
919 extern void drm_free_buffer(drm_device_t *dev, drm_buf_t *buf);
920 extern void drm_core_reclaim_buffers(drm_device_t *dev, struct file *filp);
921
922 /* IRQ support (drm_irq.h) */
923 extern int drm_control( struct inode *inode, struct file *filp,
924 unsigned int cmd, unsigned long arg );
925 extern int drm_irq_install( drm_device_t *dev );
926 extern int drm_irq_uninstall( drm_device_t *dev );
927 extern irqreturn_t drm_irq_handler( DRM_IRQ_ARGS );
928 extern void drm_driver_irq_preinstall( drm_device_t *dev );
929 extern void drm_driver_irq_postinstall( drm_device_t *dev );
930 extern void drm_driver_irq_uninstall( drm_device_t *dev );
931
932 extern int drm_wait_vblank(struct inode *inode, struct file *filp,
933 unsigned int cmd, unsigned long arg);
934 extern int drm_vblank_wait(drm_device_t *dev, unsigned int *vbl_seq);
935 extern void drm_vbl_send_signals( drm_device_t *dev );
936
937 /* AGP/GART support (drm_agpsupport.h) */
938 extern drm_agp_head_t *drm_agp_init(drm_device_t *dev);
939 extern int drm_agp_acquire(struct inode *inode, struct file *filp,
940 unsigned int cmd, unsigned long arg);
941 extern void drm_agp_do_release(drm_device_t *dev);
942 extern int drm_agp_release(struct inode *inode, struct file *filp,
943 unsigned int cmd, unsigned long arg);
944 extern int drm_agp_enable(struct inode *inode, struct file *filp,
945 unsigned int cmd, unsigned long arg);
946 extern int drm_agp_info(struct inode *inode, struct file *filp,
947 unsigned int cmd, unsigned long arg);
948 extern int drm_agp_alloc(struct inode *inode, struct file *filp,
949 unsigned int cmd, unsigned long arg);
950 extern int drm_agp_free(struct inode *inode, struct file *filp,
951 unsigned int cmd, unsigned long arg);
952 extern int drm_agp_unbind(struct inode *inode, struct file *filp,
953 unsigned int cmd, unsigned long arg);
954 extern int drm_agp_bind(struct inode *inode, struct file *filp,
955 unsigned int cmd, unsigned long arg);
956 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type);
957 extern int drm_agp_free_memory(DRM_AGP_MEM *handle);
958 extern int drm_agp_bind_memory(DRM_AGP_MEM *handle, off_t start);
959 extern int drm_agp_unbind_memory(DRM_AGP_MEM *handle);
960
961 /* Stub support (drm_stub.h) */
962 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
963 struct drm_driver *driver);
964 extern int drm_put_dev(drm_device_t * dev);
965 extern int drm_get_head(drm_device_t * dev, drm_head_t *head);
966 extern int drm_put_head(drm_head_t * head);
967 extern unsigned int drm_debug;
968 extern unsigned int drm_cards_limit;
969 extern drm_head_t **drm_heads;
970 extern struct drm_sysfs_class *drm_class;
971 extern struct proc_dir_entry *drm_proc_root;
972
973 /* Proc support (drm_proc.h) */
974 extern int drm_proc_init(drm_device_t *dev,
975 int minor,
976 struct proc_dir_entry *root,
977 struct proc_dir_entry **dev_root);
978 extern int drm_proc_cleanup(int minor,
979 struct proc_dir_entry *root,
980 struct proc_dir_entry *dev_root);
981
982 /* Scatter Gather Support (drm_scatter.h) */
983 extern void drm_sg_cleanup(drm_sg_mem_t *entry);
984 extern int drm_sg_alloc(struct inode *inode, struct file *filp,
985 unsigned int cmd, unsigned long arg);
986 extern int drm_sg_free(struct inode *inode, struct file *filp,
987 unsigned int cmd, unsigned long arg);
988
989 /* ATI PCIGART support (ati_pcigart.h) */
990 extern int drm_ati_pcigart_init(drm_device_t *dev,
991 unsigned long *addr,
992 dma_addr_t *bus_addr);
993 extern int drm_ati_pcigart_cleanup(drm_device_t *dev,
994 unsigned long addr,
995 dma_addr_t bus_addr);
996
997 extern void *drm_pci_alloc(drm_device_t * dev, size_t size,
998 size_t align, dma_addr_t maxaddr,
999 dma_addr_t * busaddr);
1000
1001 extern void drm_pci_free(drm_device_t * dev, size_t size,
1002 void *vaddr, dma_addr_t busaddr);
1003
1004 /* sysfs support (drm_sysfs.c) */
1005 struct drm_sysfs_class;
1006 extern struct drm_sysfs_class *drm_sysfs_create(struct module *owner,
1007 char *name);
1008 extern void drm_sysfs_destroy(struct drm_sysfs_class *cs);
1009 extern struct class_device *drm_sysfs_device_add(struct drm_sysfs_class *cs,
1010 dev_t dev,
1011 struct device *device,
1012 const char *fmt, ...);
1013 extern void drm_sysfs_device_remove(dev_t dev);
1014
1015
1016 /* Inline replacements for DRM_IOREMAP macros */
1017 static __inline__ void drm_core_ioremap(struct drm_map *map, struct drm_device *dev)
1018 {
1019 map->handle = drm_ioremap( map->offset, map->size, dev );
1020 }
1021
1022 static __inline__ void drm_core_ioremap_nocache(struct drm_map *map, struct drm_device *dev)
1023 {
1024 map->handle = drm_ioremap_nocache(map->offset, map->size, dev);
1025 }
1026
1027 static __inline__ void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev)
1028 {
1029 if ( map->handle && map->size )
1030 drm_ioremapfree( map->handle, map->size, dev );
1031 }
1032
1033 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev, unsigned long offset)
1034 {
1035 struct list_head *_list;
1036 list_for_each( _list, &dev->maplist->head ) {
1037 drm_map_list_t *_entry = list_entry( _list, drm_map_list_t, head );
1038 if ( _entry->map &&
1039 _entry->map->offset == offset ) {
1040 return _entry->map;
1041 }
1042 }
1043 return NULL;
1044 }
1045
1046 static __inline__ void drm_core_dropmap(struct drm_map *map)
1047 {
1048 }
1049
1050 #ifndef DEBUG_MEMORY
1051 /** Wrapper around kmalloc() */
1052 static __inline__ void *drm_alloc(size_t size, int area)
1053 {
1054 return kmalloc(size, GFP_KERNEL);
1055 }
1056
1057 /** Wrapper around kfree() */
1058 static __inline__ void drm_free(void *pt, size_t size, int area)
1059 {
1060 kfree(pt);
1061 }
1062 #else
1063 extern void *drm_alloc(size_t size, int area);
1064 extern void drm_free(void *pt, size_t size, int area);
1065 #endif
1066
1067 /*@}*/
1068
1069 extern unsigned long drm_core_get_map_ofs(drm_map_t *map);
1070 extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
1071
1072 #endif /* __KERNEL__ */
1073 #endif
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree