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