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