Linux 2.6.20.7
[linux/fpc-iii.git] / drivers / char / drm / drmP.h
blob6dcdceb812033aeb05693fdd3dbb76fcd767a9ff
1 /**
2 * \file drmP.h
3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
7 */
9 /*
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * All rights reserved.
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:
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.
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.
34 #ifndef _DRM_P_H_
35 #define _DRM_P_H_
37 /* If you want the memory alloc debug functionality, change define below */
38 /* #define DEBUG_MEMORY */
40 #ifdef __KERNEL__
41 #ifdef __alpha__
42 /* add include of current.h so that "current" is defined
43 * before static inline funcs in wait.h. Doing this so we
44 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
45 #include <asm/current.h>
46 #endif /* __alpha__ */
47 #include <linux/module.h>
48 #include <linux/kernel.h>
49 #include <linux/miscdevice.h>
50 #include <linux/fs.h>
51 #include <linux/proc_fs.h>
52 #include <linux/init.h>
53 #include <linux/file.h>
54 #include <linux/pci.h>
55 #include <linux/jiffies.h>
56 #include <linux/smp_lock.h> /* For (un)lock_kernel */
57 #include <linux/mm.h>
58 #include <linux/cdev.h>
59 #include <linux/mutex.h>
60 #if defined(__alpha__) || defined(__powerpc__)
61 #include <asm/pgtable.h> /* For pte_wrprotect */
62 #endif
63 #include <asm/io.h>
64 #include <asm/mman.h>
65 #include <asm/uaccess.h>
66 #ifdef CONFIG_MTRR
67 #include <asm/mtrr.h>
68 #endif
69 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
70 #include <linux/types.h>
71 #include <linux/agp_backend.h>
72 #endif
73 #include <linux/workqueue.h>
74 #include <linux/poll.h>
75 #include <asm/pgalloc.h>
76 #include "drm.h"
78 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
79 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
81 #include "drm_os_linux.h"
82 #include "drm_hashtab.h"
84 /***********************************************************************/
85 /** \name DRM template customization defaults */
86 /*@{*/
88 /* driver capabilities and requirements mask */
89 #define DRIVER_USE_AGP 0x1
90 #define DRIVER_REQUIRE_AGP 0x2
91 #define DRIVER_USE_MTRR 0x4
92 #define DRIVER_PCI_DMA 0x8
93 #define DRIVER_SG 0x10
94 #define DRIVER_HAVE_DMA 0x20
95 #define DRIVER_HAVE_IRQ 0x40
96 #define DRIVER_IRQ_SHARED 0x80
97 #define DRIVER_IRQ_VBL 0x100
98 #define DRIVER_DMA_QUEUE 0x200
99 #define DRIVER_FB_DMA 0x400
100 #define DRIVER_IRQ_VBL2 0x800
102 /***********************************************************************/
103 /** \name Begin the DRM... */
104 /*@{*/
106 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
107 also include looping detection. */
109 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
110 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
111 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
112 #define DRM_LOOPING_LIMIT 5000000
113 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
114 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
116 #define DRM_FLAG_DEBUG 0x01
118 #define DRM_MEM_DMA 0
119 #define DRM_MEM_SAREA 1
120 #define DRM_MEM_DRIVER 2
121 #define DRM_MEM_MAGIC 3
122 #define DRM_MEM_IOCTLS 4
123 #define DRM_MEM_MAPS 5
124 #define DRM_MEM_VMAS 6
125 #define DRM_MEM_BUFS 7
126 #define DRM_MEM_SEGS 8
127 #define DRM_MEM_PAGES 9
128 #define DRM_MEM_FILES 10
129 #define DRM_MEM_QUEUES 11
130 #define DRM_MEM_CMDS 12
131 #define DRM_MEM_MAPPINGS 13
132 #define DRM_MEM_BUFLISTS 14
133 #define DRM_MEM_AGPLISTS 15
134 #define DRM_MEM_TOTALAGP 16
135 #define DRM_MEM_BOUNDAGP 17
136 #define DRM_MEM_CTXBITMAP 18
137 #define DRM_MEM_STUB 19
138 #define DRM_MEM_SGLISTS 20
139 #define DRM_MEM_CTXLIST 21
140 #define DRM_MEM_MM 22
141 #define DRM_MEM_HASHTAB 23
143 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
144 #define DRM_MAP_HASH_OFFSET 0x10000000
146 /*@}*/
148 /***********************************************************************/
149 /** \name Macros to make printk easier */
150 /*@{*/
153 * Error output.
155 * \param fmt printf() like format string.
156 * \param arg arguments
158 #define DRM_ERROR(fmt, arg...) \
159 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg)
162 * Memory error output.
164 * \param area memory area where the error occurred.
165 * \param fmt printf() like format string.
166 * \param arg arguments
168 #define DRM_MEM_ERROR(area, fmt, arg...) \
169 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \
170 drm_mem_stats[area].name , ##arg)
172 #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
175 * Debug output.
177 * \param fmt printf() like format string.
178 * \param arg arguments
180 #if DRM_DEBUG_CODE
181 #define DRM_DEBUG(fmt, arg...) \
182 do { \
183 if ( drm_debug ) \
184 printk(KERN_DEBUG \
185 "[" DRM_NAME ":%s] " fmt , \
186 __FUNCTION__ , ##arg); \
187 } while (0)
188 #else
189 #define DRM_DEBUG(fmt, arg...) do { } while (0)
190 #endif
192 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
194 #define DRM_PROC_PRINT(fmt, arg...) \
195 len += sprintf(&buf[len], fmt , ##arg); \
196 if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
198 #define DRM_PROC_PRINT_RET(ret, fmt, arg...) \
199 len += sprintf(&buf[len], fmt , ##arg); \
200 if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
202 /*@}*/
204 /***********************************************************************/
205 /** \name Internal types and structures */
206 /*@{*/
208 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
210 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
211 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
212 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
214 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
216 * Get the private SAREA mapping.
218 * \param _dev DRM device.
219 * \param _ctx context number.
220 * \param _map output mapping.
222 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \
223 (_map) = (_dev)->context_sareas[_ctx]; \
224 } while(0)
227 * Test that the hardware lock is held by the caller, returning otherwise.
229 * \param dev DRM device.
230 * \param filp file pointer of the caller.
232 #define LOCK_TEST_WITH_RETURN( dev, filp ) \
233 do { \
234 if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) || \
235 dev->lock.filp != filp ) { \
236 DRM_ERROR( "%s called without lock held\n", \
237 __FUNCTION__ ); \
238 return -EINVAL; \
240 } while (0)
243 * Copy and IOCTL return string to user space
245 #define DRM_COPY( name, value ) \
246 len = strlen( value ); \
247 if ( len > name##_len ) len = name##_len; \
248 name##_len = strlen( value ); \
249 if ( len && name ) { \
250 if ( copy_to_user( name, value, len ) ) \
251 return -EFAULT; \
255 * Ioctl function type.
257 * \param inode device inode.
258 * \param filp file pointer.
259 * \param cmd command.
260 * \param arg argument.
262 typedef int drm_ioctl_t(struct inode *inode, struct file *filp,
263 unsigned int cmd, unsigned long arg);
265 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
266 unsigned long arg);
268 #define DRM_AUTH 0x1
269 #define DRM_MASTER 0x2
270 #define DRM_ROOT_ONLY 0x4
272 typedef struct drm_ioctl_desc {
273 drm_ioctl_t *func;
274 int flags;
275 } drm_ioctl_desc_t;
277 typedef struct drm_devstate {
278 pid_t owner; /**< X server pid holding x_lock */
279 } drm_devstate_t;
281 typedef struct drm_magic_entry {
282 drm_hash_item_t hash_item;
283 struct list_head head;
284 struct drm_file *priv;
285 struct drm_magic_entry *next;
286 } drm_magic_entry_t;
288 typedef struct drm_magic_head {
289 struct drm_magic_entry *head;
290 struct drm_magic_entry *tail;
291 } drm_magic_head_t;
293 typedef struct drm_vma_entry {
294 struct vm_area_struct *vma;
295 struct drm_vma_entry *next;
296 pid_t pid;
297 } drm_vma_entry_t;
300 * DMA buffer.
302 typedef struct drm_buf {
303 int idx; /**< Index into master buflist */
304 int total; /**< Buffer size */
305 int order; /**< log-base-2(total) */
306 int used; /**< Amount of buffer in use (for DMA) */
307 unsigned long offset; /**< Byte offset (used internally) */
308 void *address; /**< Address of buffer */
309 unsigned long bus_address; /**< Bus address of buffer */
310 struct drm_buf *next; /**< Kernel-only: used for free list */
311 __volatile__ int waiting; /**< On kernel DMA queue */
312 __volatile__ int pending; /**< On hardware DMA queue */
313 wait_queue_head_t dma_wait; /**< Processes waiting */
314 struct file *filp; /**< Pointer to holding file descr */
315 int context; /**< Kernel queue for this buffer */
316 int while_locked; /**< Dispatch this buffer while locked */
317 enum {
318 DRM_LIST_NONE = 0,
319 DRM_LIST_FREE = 1,
320 DRM_LIST_WAIT = 2,
321 DRM_LIST_PEND = 3,
322 DRM_LIST_PRIO = 4,
323 DRM_LIST_RECLAIM = 5
324 } list; /**< Which list we're on */
326 int dev_priv_size; /**< Size of buffer private storage */
327 void *dev_private; /**< Per-buffer private storage */
328 } drm_buf_t;
330 /** bufs is one longer than it has to be */
331 typedef struct drm_waitlist {
332 int count; /**< Number of possible buffers */
333 drm_buf_t **bufs; /**< List of pointers to buffers */
334 drm_buf_t **rp; /**< Read pointer */
335 drm_buf_t **wp; /**< Write pointer */
336 drm_buf_t **end; /**< End pointer */
337 spinlock_t read_lock;
338 spinlock_t write_lock;
339 } drm_waitlist_t;
341 typedef struct drm_freelist {
342 int initialized; /**< Freelist in use */
343 atomic_t count; /**< Number of free buffers */
344 drm_buf_t *next; /**< End pointer */
346 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
347 int low_mark; /**< Low water mark */
348 int high_mark; /**< High water mark */
349 atomic_t wfh; /**< If waiting for high mark */
350 spinlock_t lock;
351 } drm_freelist_t;
353 typedef struct drm_dma_handle {
354 dma_addr_t busaddr;
355 void *vaddr;
356 size_t size;
357 } drm_dma_handle_t;
360 * Buffer entry. There is one of this for each buffer size order.
362 typedef struct drm_buf_entry {
363 int buf_size; /**< size */
364 int buf_count; /**< number of buffers */
365 drm_buf_t *buflist; /**< buffer list */
366 int seg_count;
367 int page_order;
368 drm_dma_handle_t **seglist;
370 drm_freelist_t freelist;
371 } drm_buf_entry_t;
373 /** File private data */
374 typedef struct drm_file {
375 int authenticated;
376 int master;
377 int minor;
378 pid_t pid;
379 uid_t uid;
380 drm_magic_t magic;
381 unsigned long ioctl_count;
382 struct drm_file *next;
383 struct drm_file *prev;
384 struct drm_head *head;
385 int remove_auth_on_close;
386 unsigned long lock_count;
387 void *driver_priv;
388 } drm_file_t;
390 /** Wait queue */
391 typedef struct drm_queue {
392 atomic_t use_count; /**< Outstanding uses (+1) */
393 atomic_t finalization; /**< Finalization in progress */
394 atomic_t block_count; /**< Count of processes waiting */
395 atomic_t block_read; /**< Queue blocked for reads */
396 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
397 atomic_t block_write; /**< Queue blocked for writes */
398 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
399 #if 1
400 atomic_t total_queued; /**< Total queued statistic */
401 atomic_t total_flushed; /**< Total flushes statistic */
402 atomic_t total_locks; /**< Total locks statistics */
403 #endif
404 drm_ctx_flags_t flags; /**< Context preserving and 2D-only */
405 drm_waitlist_t waitlist; /**< Pending buffers */
406 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
407 } drm_queue_t;
410 * Lock data.
412 typedef struct drm_lock_data {
413 drm_hw_lock_t *hw_lock; /**< Hardware lock */
414 struct file *filp; /**< File descr of lock holder (0=kernel) */
415 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
416 unsigned long lock_time; /**< Time of last lock in jiffies */
417 } drm_lock_data_t;
420 * DMA data.
422 typedef struct drm_device_dma {
424 drm_buf_entry_t bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
425 int buf_count; /**< total number of buffers */
426 drm_buf_t **buflist; /**< Vector of pointers into drm_device_dma::bufs */
427 int seg_count;
428 int page_count; /**< number of pages */
429 unsigned long *pagelist; /**< page list */
430 unsigned long byte_count;
431 enum {
432 _DRM_DMA_USE_AGP = 0x01,
433 _DRM_DMA_USE_SG = 0x02,
434 _DRM_DMA_USE_FB = 0x04,
435 _DRM_DMA_USE_PCI_RO = 0x08
436 } flags;
438 } drm_device_dma_t;
441 * AGP memory entry. Stored as a doubly linked list.
443 typedef struct drm_agp_mem {
444 unsigned long handle; /**< handle */
445 DRM_AGP_MEM *memory;
446 unsigned long bound; /**< address */
447 int pages;
448 struct drm_agp_mem *prev; /**< previous entry */
449 struct drm_agp_mem *next; /**< next entry */
450 } drm_agp_mem_t;
453 * AGP data.
455 * \sa drm_agp_init() and drm_device::agp.
457 typedef struct drm_agp_head {
458 DRM_AGP_KERN agp_info; /**< AGP device information */
459 drm_agp_mem_t *memory; /**< memory entries */
460 unsigned long mode; /**< AGP mode */
461 struct agp_bridge_data *bridge;
462 int enabled; /**< whether the AGP bus as been enabled */
463 int acquired; /**< whether the AGP device has been acquired */
464 unsigned long base;
465 int agp_mtrr;
466 int cant_use_aperture;
467 unsigned long page_mask;
468 } drm_agp_head_t;
471 * Scatter-gather memory.
473 typedef struct drm_sg_mem {
474 unsigned long handle;
475 void *virtual;
476 int pages;
477 struct page **pagelist;
478 dma_addr_t *busaddr;
479 } drm_sg_mem_t;
481 typedef struct drm_sigdata {
482 int context;
483 drm_hw_lock_t *lock;
484 } drm_sigdata_t;
487 * Mappings list
489 typedef struct drm_map_list {
490 struct list_head head; /**< list head */
491 drm_hash_item_t hash;
492 drm_map_t *map; /**< mapping */
493 unsigned int user_token;
494 } drm_map_list_t;
496 typedef drm_map_t drm_local_map_t;
499 * Context handle list
501 typedef struct drm_ctx_list {
502 struct list_head head; /**< list head */
503 drm_context_t handle; /**< context handle */
504 drm_file_t *tag; /**< associated fd private data */
505 } drm_ctx_list_t;
507 typedef struct drm_vbl_sig {
508 struct list_head head;
509 unsigned int sequence;
510 struct siginfo info;
511 struct task_struct *task;
512 } drm_vbl_sig_t;
514 /* location of GART table */
515 #define DRM_ATI_GART_MAIN 1
516 #define DRM_ATI_GART_FB 2
518 typedef struct ati_pcigart_info {
519 int gart_table_location;
520 int is_pcie;
521 void *addr;
522 dma_addr_t bus_addr;
523 drm_local_map_t mapping;
524 } drm_ati_pcigart_info;
527 * Generic memory manager structs
529 typedef struct drm_mm_node {
530 struct list_head fl_entry;
531 struct list_head ml_entry;
532 int free;
533 unsigned long start;
534 unsigned long size;
535 void *private;
536 } drm_mm_node_t;
538 typedef struct drm_mm {
539 drm_mm_node_t root_node;
540 } drm_mm_t;
543 * DRM driver structure. This structure represent the common code for
544 * a family of cards. There will one drm_device for each card present
545 * in this family
547 struct drm_device;
549 struct drm_driver {
550 int (*load) (struct drm_device *, unsigned long flags);
551 int (*firstopen) (struct drm_device *);
552 int (*open) (struct drm_device *, drm_file_t *);
553 void (*preclose) (struct drm_device *, struct file * filp);
554 void (*postclose) (struct drm_device *, drm_file_t *);
555 void (*lastclose) (struct drm_device *);
556 int (*unload) (struct drm_device *);
557 int (*dma_ioctl) (DRM_IOCTL_ARGS);
558 void (*dma_ready) (struct drm_device *);
559 int (*dma_quiescent) (struct drm_device *);
560 int (*context_ctor) (struct drm_device * dev, int context);
561 int (*context_dtor) (struct drm_device * dev, int context);
562 int (*kernel_context_switch) (struct drm_device * dev, int old,
563 int new);
564 void (*kernel_context_switch_unlock) (struct drm_device * dev);
565 int (*vblank_wait) (struct drm_device * dev, unsigned int *sequence);
566 int (*vblank_wait2) (struct drm_device * dev, unsigned int *sequence);
567 int (*dri_library_name) (struct drm_device *dev, char *buf);
570 * Called by \c drm_device_is_agp. Typically used to determine if a
571 * card is really attached to AGP or not.
573 * \param dev DRM device handle
575 * \returns
576 * One of three values is returned depending on whether or not the
577 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
578 * (return of 1), or may or may not be AGP (return of 2).
580 int (*device_is_agp) (struct drm_device * dev);
582 /* these have to be filled in */
584 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
585 void (*irq_preinstall) (struct drm_device * dev);
586 void (*irq_postinstall) (struct drm_device * dev);
587 void (*irq_uninstall) (struct drm_device * dev);
588 void (*reclaim_buffers) (struct drm_device * dev, struct file * filp);
589 void (*reclaim_buffers_locked) (struct drm_device *dev,
590 struct file *filp);
591 unsigned long (*get_map_ofs) (drm_map_t * map);
592 unsigned long (*get_reg_ofs) (struct drm_device * dev);
593 void (*set_version) (struct drm_device * dev, drm_set_version_t * sv);
595 int major;
596 int minor;
597 int patchlevel;
598 char *name;
599 char *desc;
600 char *date;
602 u32 driver_features;
603 int dev_priv_size;
604 drm_ioctl_desc_t *ioctls;
605 int num_ioctls;
606 struct file_operations fops;
607 struct pci_driver pci_driver;
611 * DRM head structure. This structure represent a video head on a card
612 * that may contain multiple heads. Embed one per head of these in the
613 * private drm_device structure.
615 typedef struct drm_head {
616 int minor; /**< Minor device number */
617 struct drm_device *dev;
618 struct proc_dir_entry *dev_root; /**< proc directory entry */
619 dev_t device; /**< Device number for mknod */
620 struct class_device *dev_class;
621 } drm_head_t;
624 * DRM device structure. This structure represent a complete card that
625 * may contain multiple heads.
627 typedef struct drm_device {
628 char *unique; /**< Unique identifier: e.g., busid */
629 int unique_len; /**< Length of unique field */
630 char *devname; /**< For /proc/interrupts */
631 int if_version; /**< Highest interface version set */
633 int blocked; /**< Blocked due to VC switch? */
635 /** \name Locks */
636 /*@{ */
637 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
638 struct mutex struct_mutex; /**< For others */
639 /*@} */
641 /** \name Usage Counters */
642 /*@{ */
643 int open_count; /**< Outstanding files open */
644 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
645 atomic_t vma_count; /**< Outstanding vma areas open */
646 int buf_use; /**< Buffers in use -- cannot alloc */
647 atomic_t buf_alloc; /**< Buffer allocation in progress */
648 /*@} */
650 /** \name Performance counters */
651 /*@{ */
652 unsigned long counters;
653 drm_stat_type_t types[15];
654 atomic_t counts[15];
655 /*@} */
657 /** \name Authentication */
658 /*@{ */
659 drm_file_t *file_first; /**< file list head */
660 drm_file_t *file_last; /**< file list tail */
661 drm_open_hash_t magiclist; /**< magic hash table */
662 struct list_head magicfree;
663 /*@} */
665 /** \name Memory management */
666 /*@{ */
667 drm_map_list_t *maplist; /**< Linked list of regions */
668 int map_count; /**< Number of mappable regions */
669 drm_open_hash_t map_hash; /**< User token hash table for maps */
671 /** \name Context handle management */
672 /*@{ */
673 drm_ctx_list_t *ctxlist; /**< Linked list of context handles */
674 int ctx_count; /**< Number of context handles */
675 struct mutex ctxlist_mutex; /**< For ctxlist */
677 drm_map_t **context_sareas; /**< per-context SAREA's */
678 int max_context;
680 drm_vma_entry_t *vmalist; /**< List of vmas (for debugging) */
681 drm_lock_data_t lock; /**< Information on hardware lock */
682 /*@} */
684 /** \name DMA queues (contexts) */
685 /*@{ */
686 int queue_count; /**< Number of active DMA queues */
687 int queue_reserved; /**< Number of reserved DMA queues */
688 int queue_slots; /**< Actual length of queuelist */
689 drm_queue_t **queuelist; /**< Vector of pointers to DMA queues */
690 drm_device_dma_t *dma; /**< Optional pointer for DMA support */
691 /*@} */
693 /** \name Context support */
694 /*@{ */
695 int irq; /**< Interrupt used by board */
696 int irq_enabled; /**< True if irq handler is enabled */
697 __volatile__ long context_flag; /**< Context swapping flag */
698 __volatile__ long interrupt_flag; /**< Interruption handler flag */
699 __volatile__ long dma_flag; /**< DMA dispatch flag */
700 struct timer_list timer; /**< Timer for delaying ctx switch */
701 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
702 int last_checked; /**< Last context checked for DMA */
703 int last_context; /**< Last current context */
704 unsigned long last_switch; /**< jiffies at last context switch */
705 /*@} */
707 struct work_struct work;
708 /** \name VBLANK IRQ support */
709 /*@{ */
711 wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
712 atomic_t vbl_received;
713 atomic_t vbl_received2; /**< number of secondary VBLANK interrupts */
714 spinlock_t vbl_lock;
715 drm_vbl_sig_t vbl_sigs; /**< signal list to send on VBLANK */
716 drm_vbl_sig_t vbl_sigs2; /**< signals to send on secondary VBLANK */
717 unsigned int vbl_pending;
718 spinlock_t tasklet_lock; /**< For drm_locked_tasklet */
719 void (*locked_tasklet_func)(struct drm_device *dev);
721 /*@} */
722 cycles_t ctx_start;
723 cycles_t lck_start;
725 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
726 wait_queue_head_t buf_readers; /**< Processes waiting to read */
727 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
729 drm_agp_head_t *agp; /**< AGP data */
731 struct pci_dev *pdev; /**< PCI device structure */
732 int pci_vendor; /**< PCI vendor id */
733 int pci_device; /**< PCI device id */
734 #ifdef __alpha__
735 struct pci_controller *hose;
736 #endif
737 drm_sg_mem_t *sg; /**< Scatter gather memory */
738 unsigned long *ctx_bitmap; /**< context bitmap */
739 void *dev_private; /**< device private data */
740 drm_sigdata_t sigdata; /**< For block_all_signals */
741 sigset_t sigmask;
743 struct drm_driver *driver;
744 drm_local_map_t *agp_buffer_map;
745 unsigned int agp_buffer_token;
746 drm_head_t primary; /**< primary screen head */
748 /** \name Drawable information */
749 /*@{ */
750 spinlock_t drw_lock;
751 unsigned int drw_bitfield_length;
752 u32 *drw_bitfield;
753 unsigned int drw_info_length;
754 drm_drawable_info_t **drw_info;
755 /*@} */
756 } drm_device_t;
758 static __inline__ int drm_core_check_feature(struct drm_device *dev,
759 int feature)
761 return ((dev->driver->driver_features & feature) ? 1 : 0);
764 #ifdef __alpha__
765 #define drm_get_pci_domain(dev) dev->hose->bus->number
766 #else
767 #define drm_get_pci_domain(dev) 0
768 #endif
770 #if __OS_HAS_AGP
771 static inline int drm_core_has_AGP(struct drm_device *dev)
773 return drm_core_check_feature(dev, DRIVER_USE_AGP);
775 #else
776 #define drm_core_has_AGP(dev) (0)
777 #endif
779 #if __OS_HAS_MTRR
780 static inline int drm_core_has_MTRR(struct drm_device *dev)
782 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
785 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
787 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
788 unsigned int flags)
790 return mtrr_add(offset, size, flags, 1);
793 static inline int drm_mtrr_del(int handle, unsigned long offset,
794 unsigned long size, unsigned int flags)
796 return mtrr_del(handle, offset, size);
799 #else
800 #define drm_core_has_MTRR(dev) (0)
802 #define DRM_MTRR_WC 0
804 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
805 unsigned int flags)
807 return 0;
810 static inline int drm_mtrr_del(int handle, unsigned long offset,
811 unsigned long size, unsigned int flags)
813 return 0;
815 #endif
817 /******************************************************************/
818 /** \name Internal function definitions */
819 /*@{*/
821 /* Driver support (drm_drv.h) */
822 extern int drm_init(struct drm_driver *driver);
823 extern void drm_exit(struct drm_driver *driver);
824 extern int drm_ioctl(struct inode *inode, struct file *filp,
825 unsigned int cmd, unsigned long arg);
826 extern long drm_compat_ioctl(struct file *filp,
827 unsigned int cmd, unsigned long arg);
828 extern int drm_lastclose(drm_device_t *dev);
830 /* Device support (drm_fops.h) */
831 extern int drm_open(struct inode *inode, struct file *filp);
832 extern int drm_stub_open(struct inode *inode, struct file *filp);
833 extern int drm_fasync(int fd, struct file *filp, int on);
834 extern int drm_release(struct inode *inode, struct file *filp);
836 /* Mapping support (drm_vm.h) */
837 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
838 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
840 /* Memory management support (drm_memory.h) */
841 #include "drm_memory.h"
842 extern void drm_mem_init(void);
843 extern int drm_mem_info(char *buf, char **start, off_t offset,
844 int request, int *eof, void *data);
845 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
846 extern void *drm_ioremap(unsigned long offset, unsigned long size,
847 drm_device_t * dev);
848 extern void drm_ioremapfree(void *pt, unsigned long size, drm_device_t * dev);
850 extern DRM_AGP_MEM *drm_alloc_agp(drm_device_t * dev, int pages, u32 type);
851 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
852 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
853 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
855 /* Misc. IOCTL support (drm_ioctl.h) */
856 extern int drm_irq_by_busid(struct inode *inode, struct file *filp,
857 unsigned int cmd, unsigned long arg);
858 extern int drm_getunique(struct inode *inode, struct file *filp,
859 unsigned int cmd, unsigned long arg);
860 extern int drm_setunique(struct inode *inode, struct file *filp,
861 unsigned int cmd, unsigned long arg);
862 extern int drm_getmap(struct inode *inode, struct file *filp,
863 unsigned int cmd, unsigned long arg);
864 extern int drm_getclient(struct inode *inode, struct file *filp,
865 unsigned int cmd, unsigned long arg);
866 extern int drm_getstats(struct inode *inode, struct file *filp,
867 unsigned int cmd, unsigned long arg);
868 extern int drm_setversion(struct inode *inode, struct file *filp,
869 unsigned int cmd, unsigned long arg);
870 extern int drm_noop(struct inode *inode, struct file *filp,
871 unsigned int cmd, unsigned long arg);
873 /* Context IOCTL support (drm_context.h) */
874 extern int drm_resctx(struct inode *inode, struct file *filp,
875 unsigned int cmd, unsigned long arg);
876 extern int drm_addctx(struct inode *inode, struct file *filp,
877 unsigned int cmd, unsigned long arg);
878 extern int drm_modctx(struct inode *inode, struct file *filp,
879 unsigned int cmd, unsigned long arg);
880 extern int drm_getctx(struct inode *inode, struct file *filp,
881 unsigned int cmd, unsigned long arg);
882 extern int drm_switchctx(struct inode *inode, struct file *filp,
883 unsigned int cmd, unsigned long arg);
884 extern int drm_newctx(struct inode *inode, struct file *filp,
885 unsigned int cmd, unsigned long arg);
886 extern int drm_rmctx(struct inode *inode, struct file *filp,
887 unsigned int cmd, unsigned long arg);
889 extern int drm_ctxbitmap_init(drm_device_t * dev);
890 extern void drm_ctxbitmap_cleanup(drm_device_t * dev);
891 extern void drm_ctxbitmap_free(drm_device_t * dev, int ctx_handle);
893 extern int drm_setsareactx(struct inode *inode, struct file *filp,
894 unsigned int cmd, unsigned long arg);
895 extern int drm_getsareactx(struct inode *inode, struct file *filp,
896 unsigned int cmd, unsigned long arg);
898 /* Drawable IOCTL support (drm_drawable.h) */
899 extern int drm_adddraw(struct inode *inode, struct file *filp,
900 unsigned int cmd, unsigned long arg);
901 extern int drm_rmdraw(struct inode *inode, struct file *filp,
902 unsigned int cmd, unsigned long arg);
903 extern int drm_update_drawable_info(struct inode *inode, struct file *filp,
904 unsigned int cmd, unsigned long arg);
905 extern drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev,
906 drm_drawable_t id);
908 /* Authentication IOCTL support (drm_auth.h) */
909 extern int drm_getmagic(struct inode *inode, struct file *filp,
910 unsigned int cmd, unsigned long arg);
911 extern int drm_authmagic(struct inode *inode, struct file *filp,
912 unsigned int cmd, unsigned long arg);
914 /* Locking IOCTL support (drm_lock.h) */
915 extern int drm_lock(struct inode *inode, struct file *filp,
916 unsigned int cmd, unsigned long arg);
917 extern int drm_unlock(struct inode *inode, struct file *filp,
918 unsigned int cmd, unsigned long arg);
919 extern int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context);
920 extern int drm_lock_free(drm_device_t * dev,
921 __volatile__ unsigned int *lock, unsigned int context);
923 /* Buffer management support (drm_bufs.h) */
924 extern int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request);
925 extern int drm_addbufs_pci(drm_device_t * dev, drm_buf_desc_t * request);
926 extern int drm_addmap(drm_device_t * dev, unsigned int offset,
927 unsigned int size, drm_map_type_t type,
928 drm_map_flags_t flags, drm_local_map_t ** map_ptr);
929 extern int drm_addmap_ioctl(struct inode *inode, struct file *filp,
930 unsigned int cmd, unsigned long arg);
931 extern int drm_rmmap(drm_device_t * dev, drm_local_map_t * map);
932 extern int drm_rmmap_locked(drm_device_t * dev, drm_local_map_t * map);
933 extern int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
934 unsigned int cmd, unsigned long arg);
936 extern int drm_order(unsigned long size);
937 extern int drm_addbufs(struct inode *inode, struct file *filp,
938 unsigned int cmd, unsigned long arg);
939 extern int drm_infobufs(struct inode *inode, struct file *filp,
940 unsigned int cmd, unsigned long arg);
941 extern int drm_markbufs(struct inode *inode, struct file *filp,
942 unsigned int cmd, unsigned long arg);
943 extern int drm_freebufs(struct inode *inode, struct file *filp,
944 unsigned int cmd, unsigned long arg);
945 extern int drm_mapbufs(struct inode *inode, struct file *filp,
946 unsigned int cmd, unsigned long arg);
947 extern unsigned long drm_get_resource_start(drm_device_t * dev,
948 unsigned int resource);
949 extern unsigned long drm_get_resource_len(drm_device_t * dev,
950 unsigned int resource);
952 /* DMA support (drm_dma.h) */
953 extern int drm_dma_setup(drm_device_t * dev);
954 extern void drm_dma_takedown(drm_device_t * dev);
955 extern void drm_free_buffer(drm_device_t * dev, drm_buf_t * buf);
956 extern void drm_core_reclaim_buffers(drm_device_t * dev, struct file *filp);
958 /* IRQ support (drm_irq.h) */
959 extern int drm_control(struct inode *inode, struct file *filp,
960 unsigned int cmd, unsigned long arg);
961 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
962 extern int drm_irq_uninstall(drm_device_t * dev);
963 extern void drm_driver_irq_preinstall(drm_device_t * dev);
964 extern void drm_driver_irq_postinstall(drm_device_t * dev);
965 extern void drm_driver_irq_uninstall(drm_device_t * dev);
967 extern int drm_wait_vblank(struct inode *inode, struct file *filp,
968 unsigned int cmd, unsigned long arg);
969 extern int drm_vblank_wait(drm_device_t * dev, unsigned int *vbl_seq);
970 extern void drm_vbl_send_signals(drm_device_t * dev);
971 extern void drm_locked_tasklet(drm_device_t *dev, void(*func)(drm_device_t*));
973 /* AGP/GART support (drm_agpsupport.h) */
974 extern drm_agp_head_t *drm_agp_init(drm_device_t * dev);
975 extern int drm_agp_acquire(drm_device_t * dev);
976 extern int drm_agp_acquire_ioctl(struct inode *inode, struct file *filp,
977 unsigned int cmd, unsigned long arg);
978 extern int drm_agp_release(drm_device_t * dev);
979 extern int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
980 unsigned int cmd, unsigned long arg);
981 extern int drm_agp_enable(drm_device_t * dev, drm_agp_mode_t mode);
982 extern int drm_agp_enable_ioctl(struct inode *inode, struct file *filp,
983 unsigned int cmd, unsigned long arg);
984 extern int drm_agp_info(drm_device_t * dev, drm_agp_info_t * info);
985 extern int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
986 unsigned int cmd, unsigned long arg);
987 extern int drm_agp_alloc(drm_device_t *dev, drm_agp_buffer_t *request);
988 extern int drm_agp_alloc_ioctl(struct inode *inode, struct file *filp,
989 unsigned int cmd, unsigned long arg);
990 extern int drm_agp_free(drm_device_t *dev, drm_agp_buffer_t *request);
991 extern int drm_agp_free_ioctl(struct inode *inode, struct file *filp,
992 unsigned int cmd, unsigned long arg);
993 extern int drm_agp_unbind(drm_device_t *dev, drm_agp_binding_t *request);
994 extern int drm_agp_unbind_ioctl(struct inode *inode, struct file *filp,
995 unsigned int cmd, unsigned long arg);
996 extern int drm_agp_bind(drm_device_t *dev, drm_agp_binding_t *request);
997 extern int drm_agp_bind_ioctl(struct inode *inode, struct file *filp,
998 unsigned int cmd, unsigned long arg);
999 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge,
1000 size_t pages, u32 type);
1001 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1002 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1003 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1005 /* Stub support (drm_stub.h) */
1006 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1007 struct drm_driver *driver);
1008 extern int drm_put_dev(drm_device_t * dev);
1009 extern int drm_put_head(drm_head_t * head);
1010 extern unsigned int drm_debug;
1011 extern unsigned int drm_cards_limit;
1012 extern drm_head_t **drm_heads;
1013 extern struct class *drm_class;
1014 extern struct proc_dir_entry *drm_proc_root;
1016 /* Proc support (drm_proc.h) */
1017 extern int drm_proc_init(drm_device_t * dev,
1018 int minor,
1019 struct proc_dir_entry *root,
1020 struct proc_dir_entry **dev_root);
1021 extern int drm_proc_cleanup(int minor,
1022 struct proc_dir_entry *root,
1023 struct proc_dir_entry *dev_root);
1025 /* Scatter Gather Support (drm_scatter.h) */
1026 extern void drm_sg_cleanup(drm_sg_mem_t * entry);
1027 extern int drm_sg_alloc(struct inode *inode, struct file *filp,
1028 unsigned int cmd, unsigned long arg);
1029 extern int drm_sg_free(struct inode *inode, struct file *filp,
1030 unsigned int cmd, unsigned long arg);
1032 /* ATI PCIGART support (ati_pcigart.h) */
1033 extern int drm_ati_pcigart_init(drm_device_t * dev,
1034 drm_ati_pcigart_info * gart_info);
1035 extern int drm_ati_pcigart_cleanup(drm_device_t * dev,
1036 drm_ati_pcigart_info * gart_info);
1038 extern drm_dma_handle_t *drm_pci_alloc(drm_device_t * dev, size_t size,
1039 size_t align, dma_addr_t maxaddr);
1040 extern void __drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah);
1041 extern void drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah);
1043 /* sysfs support (drm_sysfs.c) */
1044 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1045 extern void drm_sysfs_destroy(struct class *cs);
1046 extern struct class_device *drm_sysfs_device_add(struct class *cs,
1047 drm_head_t *head);
1048 extern void drm_sysfs_device_remove(struct class_device *class_dev);
1051 * Basic memory manager support (drm_mm.c)
1053 extern drm_mm_node_t *drm_mm_get_block(drm_mm_node_t * parent,
1054 unsigned long size,
1055 unsigned alignment);
1056 extern void drm_mm_put_block(drm_mm_t *mm, drm_mm_node_t *cur);
1057 extern drm_mm_node_t *drm_mm_search_free(const drm_mm_t *mm, unsigned long size,
1058 unsigned alignment, int best_match);
1059 extern int drm_mm_init(drm_mm_t *mm, unsigned long start, unsigned long size);
1060 extern void drm_mm_takedown(drm_mm_t *mm);
1062 /* Inline replacements for DRM_IOREMAP macros */
1063 static __inline__ void drm_core_ioremap(struct drm_map *map,
1064 struct drm_device *dev)
1066 map->handle = drm_ioremap(map->offset, map->size, dev);
1069 #if 0
1070 static __inline__ void drm_core_ioremap_nocache(struct drm_map *map,
1071 struct drm_device *dev)
1073 map->handle = drm_ioremap_nocache(map->offset, map->size, dev);
1075 #endif /* 0 */
1077 static __inline__ void drm_core_ioremapfree(struct drm_map *map,
1078 struct drm_device *dev)
1080 if (map->handle && map->size)
1081 drm_ioremapfree(map->handle, map->size, dev);
1084 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev,
1085 unsigned int token)
1087 drm_map_list_t *_entry;
1088 list_for_each_entry(_entry, &dev->maplist->head, head)
1089 if (_entry->user_token == token)
1090 return _entry->map;
1091 return NULL;
1094 static __inline__ int drm_device_is_agp(drm_device_t * dev)
1096 if (dev->driver->device_is_agp != NULL) {
1097 int err = (*dev->driver->device_is_agp) (dev);
1099 if (err != 2) {
1100 return err;
1104 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1107 static __inline__ int drm_device_is_pcie(drm_device_t * dev)
1109 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1112 static __inline__ void drm_core_dropmap(struct drm_map *map)
1116 #ifndef DEBUG_MEMORY
1117 /** Wrapper around kmalloc() */
1118 static __inline__ void *drm_alloc(size_t size, int area)
1120 return kmalloc(size, GFP_KERNEL);
1123 /** Wrapper around kfree() */
1124 static __inline__ void drm_free(void *pt, size_t size, int area)
1126 kfree(pt);
1129 /** Wrapper around kcalloc() */
1130 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1132 return kcalloc(nmemb, size, GFP_KERNEL);
1134 #else
1135 extern void *drm_alloc(size_t size, int area);
1136 extern void drm_free(void *pt, size_t size, int area);
1137 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1138 #endif
1140 /*@}*/
1142 extern unsigned long drm_core_get_map_ofs(drm_map_t * map);
1143 extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
1145 #endif /* __KERNEL__ */
1146 #endif