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1/**
2 * \file drmP.h
3 * Private header for Direct Rendering Manager
4 *
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
7 */
8
9/*
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * All rights reserved.
13 *
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the "Software"),
16 * to deal in the Software without restriction, including without limitation
17 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
18 * and/or sell copies of the Software, and to permit persons to whom the
19 * Software is furnished to do so, subject to the following conditions:
20 *
21 * The above copyright notice and this permission notice (including the next
22 * paragraph) shall be included in all copies or substantial portions of the
23 * Software.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
28 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
29 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
30 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
31 * OTHER DEALINGS IN THE SOFTWARE.
32 */
33
34#ifndef _DRM_P_H_
35#define _DRM_P_H_
36
37/* If you want the memory alloc debug functionality, change define below */
38/* #define DEBUG_MEMORY */
39
40#ifdef __KERNEL__
41#ifdef __alpha__
42/* add include of current.h so that "current" is defined
43 * before static inline funcs in wait.h. Doing this so we
44 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
45#include <asm/current.h>
46#endif /* __alpha__ */
47#include <linux/module.h>
48#include <linux/kernel.h>
49#include <linux/miscdevice.h>
50#include <linux/fs.h>
51#include <linux/proc_fs.h>
52#include <linux/init.h>
53#include <linux/file.h>
54#include <linux/pci.h>
55#include <linux/jiffies.h>
56#include <linux/smp_lock.h> /* For (un)lock_kernel */
57#include <linux/dma-mapping.h>
58#include <linux/mm.h>
59#include <linux/cdev.h>
60#include <linux/mutex.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#include <linux/idr.h>
80
81#define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
82#define __OS_HAS_MTRR (defined(CONFIG_MTRR))
83
84struct drm_file;
85struct drm_device;
86
87#include "drm_os_linux.h"
88#include "drm_hashtab.h"
89
90/***********************************************************************/
91/** \name DRM template customization defaults */
92/*@{*/
93
94/* driver capabilities and requirements mask */
95#define DRIVER_USE_AGP 0x1
96#define DRIVER_REQUIRE_AGP 0x2
97#define DRIVER_USE_MTRR 0x4
98#define DRIVER_PCI_DMA 0x8
99#define DRIVER_SG 0x10
100#define DRIVER_HAVE_DMA 0x20
101#define DRIVER_HAVE_IRQ 0x40
102#define DRIVER_IRQ_SHARED 0x80
103#define DRIVER_IRQ_VBL 0x100
104#define DRIVER_DMA_QUEUE 0x200
105#define DRIVER_FB_DMA 0x400
106#define DRIVER_IRQ_VBL2 0x800
107
108/***********************************************************************/
109/** \name Begin the DRM... */
110/*@{*/
111
112#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
113 also include looping detection. */
114
115#define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
116#define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
117#define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
118#define DRM_LOOPING_LIMIT 5000000
119#define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
120#define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
121
122#define DRM_FLAG_DEBUG 0x01
123
124#define DRM_MEM_DMA 0
125#define DRM_MEM_SAREA 1
126#define DRM_MEM_DRIVER 2
127#define DRM_MEM_MAGIC 3
128#define DRM_MEM_IOCTLS 4
129#define DRM_MEM_MAPS 5
130#define DRM_MEM_VMAS 6
131#define DRM_MEM_BUFS 7
132#define DRM_MEM_SEGS 8
133#define DRM_MEM_PAGES 9
134#define DRM_MEM_FILES 10
135#define DRM_MEM_QUEUES 11
136#define DRM_MEM_CMDS 12
137#define DRM_MEM_MAPPINGS 13
138#define DRM_MEM_BUFLISTS 14
139#define DRM_MEM_AGPLISTS 15
140#define DRM_MEM_TOTALAGP 16
141#define DRM_MEM_BOUNDAGP 17
142#define DRM_MEM_CTXBITMAP 18
143#define DRM_MEM_STUB 19
144#define DRM_MEM_SGLISTS 20
145#define DRM_MEM_CTXLIST 21
146#define DRM_MEM_MM 22
147#define DRM_MEM_HASHTAB 23
148
149#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
150#define DRM_MAP_HASH_OFFSET 0x10000000
151
152/*@}*/
153
154/***********************************************************************/
155/** \name Macros to make printk easier */
156/*@{*/
157
158/**
159 * Error output.
160 *
161 * \param fmt printf() like format string.
162 * \param arg arguments
163 */
164#define DRM_ERROR(fmt, arg...) \
165 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
166
167/**
168 * Memory error output.
169 *
170 * \param area memory area where the error occurred.
171 * \param fmt printf() like format string.
172 * \param arg arguments
173 */
174#define DRM_MEM_ERROR(area, fmt, arg...) \
175 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
176 drm_mem_stats[area].name , ##arg)
177
178#define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
179
180/**
181 * Debug output.
182 *
183 * \param fmt printf() like format string.
184 * \param arg arguments
185 */
186#if DRM_DEBUG_CODE
187#define DRM_DEBUG(fmt, arg...) \
188 do { \
189 if ( drm_debug ) \
190 printk(KERN_DEBUG \
191 "[" DRM_NAME ":%s] " fmt , \
192 __func__ , ##arg); \
193 } while (0)
194#else
195#define DRM_DEBUG(fmt, arg...) do { } while (0)
196#endif
197
198#define DRM_PROC_LIMIT (PAGE_SIZE-80)
199
200#define DRM_PROC_PRINT(fmt, arg...) \
201 len += sprintf(&buf[len], fmt , ##arg); \
202 if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
203
204#define DRM_PROC_PRINT_RET(ret, fmt, arg...) \
205 len += sprintf(&buf[len], fmt , ##arg); \
206 if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
207
208/*@}*/
209
210/***********************************************************************/
211/** \name Internal types and structures */
212/*@{*/
213
214#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
215
216#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
217#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
218#define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
219
220#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
221/**
222 * Get the private SAREA mapping.
223 *
224 * \param _dev DRM device.
225 * \param _ctx context number.
226 * \param _map output mapping.
227 */
228#define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \
229 (_map) = (_dev)->context_sareas[_ctx]; \
230} while(0)
231
232/**
233 * Test that the hardware lock is held by the caller, returning otherwise.
234 *
235 * \param dev DRM device.
236 * \param filp file pointer of the caller.
237 */
238#define LOCK_TEST_WITH_RETURN( dev, file_priv ) \
239do { \
240 if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) || \
241 dev->lock.file_priv != file_priv ) { \
242 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
243 __func__, _DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ),\
244 dev->lock.file_priv, file_priv ); \
245 return -EINVAL; \
246 } \
247} while (0)
248
249/**
250 * Copy and IOCTL return string to user space
251 */
252#define DRM_COPY( name, value ) \
253 len = strlen( value ); \
254 if ( len > name##_len ) len = name##_len; \
255 name##_len = strlen( value ); \
256 if ( len && name ) { \
257 if ( copy_to_user( name, value, len ) ) \
258 return -EFAULT; \
259 }
260
261/**
262 * Ioctl function type.
263 *
264 * \param inode device inode.
265 * \param file_priv DRM file private pointer.
266 * \param cmd command.
267 * \param arg argument.
268 */
269typedef int drm_ioctl_t(struct drm_device *dev, void *data,
270 struct drm_file *file_priv);
271
272typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
273 unsigned long arg);
274
275#define DRM_AUTH 0x1
276#define DRM_MASTER 0x2
277#define DRM_ROOT_ONLY 0x4
278
279struct drm_ioctl_desc {
280 unsigned int cmd;
281 drm_ioctl_t *func;
282 int flags;
283};
284
285/**
286 * Creates a driver or general drm_ioctl_desc array entry for the given
287 * ioctl, for use by drm_ioctl().
288 */
289#define DRM_IOCTL_DEF(ioctl, func, flags) \
290 [DRM_IOCTL_NR(ioctl)] = {ioctl, func, flags}
291
292struct drm_magic_entry {
293 struct list_head head;
294 struct drm_hash_item hash_item;
295 struct drm_file *priv;
296};
297
298struct drm_vma_entry {
299 struct list_head head;
300 struct vm_area_struct *vma;
301 pid_t pid;
302};
303
304/**
305 * DMA buffer.
306 */
307struct drm_buf {
308 int idx; /**< Index into master buflist */
309 int total; /**< Buffer size */
310 int order; /**< log-base-2(total) */
311 int used; /**< Amount of buffer in use (for DMA) */
312 unsigned long offset; /**< Byte offset (used internally) */
313 void *address; /**< Address of buffer */
314 unsigned long bus_address; /**< Bus address of buffer */
315 struct drm_buf *next; /**< Kernel-only: used for free list */
316 __volatile__ int waiting; /**< On kernel DMA queue */
317 __volatile__ int pending; /**< On hardware DMA queue */
318 wait_queue_head_t dma_wait; /**< Processes waiting */
319 struct drm_file *file_priv; /**< Private of holding file descr */
320 int context; /**< Kernel queue for this buffer */
321 int while_locked; /**< Dispatch this buffer while locked */
322 enum {
323 DRM_LIST_NONE = 0,
324 DRM_LIST_FREE = 1,
325 DRM_LIST_WAIT = 2,
326 DRM_LIST_PEND = 3,
327 DRM_LIST_PRIO = 4,
328 DRM_LIST_RECLAIM = 5
329 } list; /**< Which list we're on */
330
331 int dev_priv_size; /**< Size of buffer private storage */
332 void *dev_private; /**< Per-buffer private storage */
333};
334
335/** bufs is one longer than it has to be */
336struct drm_waitlist {
337 int count; /**< Number of possible buffers */
338 struct drm_buf **bufs; /**< List of pointers to buffers */
339 struct drm_buf **rp; /**< Read pointer */
340 struct drm_buf **wp; /**< Write pointer */
341 struct drm_buf **end; /**< End pointer */
342 spinlock_t read_lock;
343 spinlock_t write_lock;
344};
345
346struct drm_freelist {
347 int initialized; /**< Freelist in use */
348 atomic_t count; /**< Number of free buffers */
349 struct drm_buf *next; /**< End pointer */
350
351 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
352 int low_mark; /**< Low water mark */
353 int high_mark; /**< High water mark */
354 atomic_t wfh; /**< If waiting for high mark */
355 spinlock_t lock;
356};
357
358typedef struct drm_dma_handle {
359 dma_addr_t busaddr;
360 void *vaddr;
361 size_t size;
362} drm_dma_handle_t;
363
364/**
365 * Buffer entry. There is one of this for each buffer size order.
366 */
367struct drm_buf_entry {
368 int buf_size; /**< size */
369 int buf_count; /**< number of buffers */
370 struct drm_buf *buflist; /**< buffer list */
371 int seg_count;
372 int page_order;
373 struct drm_dma_handle **seglist;
374
375 struct drm_freelist freelist;
376};
377
378/** File private data */
379struct drm_file {
380 int authenticated;
381 int master;
382 pid_t pid;
383 uid_t uid;
384 drm_magic_t magic;
385 unsigned long ioctl_count;
386 struct list_head lhead;
387 struct drm_minor *minor;
388 int remove_auth_on_close;
389 unsigned long lock_count;
390 struct file *filp;
391 void *driver_priv;
392};
393
394/** Wait queue */
395struct drm_queue {
396 atomic_t use_count; /**< Outstanding uses (+1) */
397 atomic_t finalization; /**< Finalization in progress */
398 atomic_t block_count; /**< Count of processes waiting */
399 atomic_t block_read; /**< Queue blocked for reads */
400 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
401 atomic_t block_write; /**< Queue blocked for writes */
402 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
403 atomic_t total_queued; /**< Total queued statistic */
404 atomic_t total_flushed; /**< Total flushes statistic */
405 atomic_t total_locks; /**< Total locks statistics */
406 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
407 struct drm_waitlist waitlist; /**< Pending buffers */
408 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
409};
410
411/**
412 * Lock data.
413 */
414struct drm_lock_data {
415 struct drm_hw_lock *hw_lock; /**< Hardware lock */
416 /** Private of lock holder's file (NULL=kernel) */
417 struct drm_file *file_priv;
418 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
419 unsigned long lock_time; /**< Time of last lock in jiffies */
420 spinlock_t spinlock;
421 uint32_t kernel_waiters;
422 uint32_t user_waiters;
423 int idle_has_lock;
424};
425
426/**
427 * DMA data.
428 */
429struct drm_device_dma {
430
431 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
432 int buf_count; /**< total number of buffers */
433 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
434 int seg_count;
435 int page_count; /**< number of pages */
436 unsigned long *pagelist; /**< page list */
437 unsigned long byte_count;
438 enum {
439 _DRM_DMA_USE_AGP = 0x01,
440 _DRM_DMA_USE_SG = 0x02,
441 _DRM_DMA_USE_FB = 0x04,
442 _DRM_DMA_USE_PCI_RO = 0x08
443 } flags;
444
445};
446
447/**
448 * AGP memory entry. Stored as a doubly linked list.
449 */
450struct drm_agp_mem {
451 unsigned long handle; /**< handle */
452 DRM_AGP_MEM *memory;
453 unsigned long bound; /**< address */
454 int pages;
455 struct list_head head;
456};
457
458/**
459 * AGP data.
460 *
461 * \sa drm_agp_init() and drm_device::agp.
462 */
463struct drm_agp_head {
464 DRM_AGP_KERN agp_info; /**< AGP device information */
465 struct list_head memory;
466 unsigned long mode; /**< AGP mode */
467 struct agp_bridge_data *bridge;
468 int enabled; /**< whether the AGP bus as been enabled */
469 int acquired; /**< whether the AGP device has been acquired */
470 unsigned long base;
471 int agp_mtrr;
472 int cant_use_aperture;
473 unsigned long page_mask;
474};
475
476/**
477 * Scatter-gather memory.
478 */
479struct drm_sg_mem {
480 unsigned long handle;
481 void *virtual;
482 int pages;
483 struct page **pagelist;
484 dma_addr_t *busaddr;
485};
486
487struct drm_sigdata {
488 int context;
489 struct drm_hw_lock *lock;
490};
491
492
493/*
494 * Generic memory manager structs
495 */
496
497struct drm_mm_node {
498 struct list_head fl_entry;
499 struct list_head ml_entry;
500 int free;
501 unsigned long start;
502 unsigned long size;
503 struct drm_mm *mm;
504 void *private;
505};
506
507struct drm_mm {
508 struct list_head fl_entry;
509 struct list_head ml_entry;
510};
511
512
513/**
514 * Mappings list
515 */
516struct drm_map_list {
517 struct list_head head; /**< list head */
518 struct drm_hash_item hash;
519 struct drm_map *map; /**< mapping */
520 uint64_t user_token;
521};
522
523typedef struct drm_map drm_local_map_t;
524
525/**
526 * Context handle list
527 */
528struct drm_ctx_list {
529 struct list_head head; /**< list head */
530 drm_context_t handle; /**< context handle */
531 struct drm_file *tag; /**< associated fd private data */
532};
533
534struct drm_vbl_sig {
535 struct list_head head;
536 unsigned int sequence;
537 struct siginfo info;
538 struct task_struct *task;
539};
540
541/* location of GART table */
542#define DRM_ATI_GART_MAIN 1
543#define DRM_ATI_GART_FB 2
544
545#define DRM_ATI_GART_PCI 1
546#define DRM_ATI_GART_PCIE 2
547#define DRM_ATI_GART_IGP 3
548
549struct drm_ati_pcigart_info {
550 int gart_table_location;
551 int gart_reg_if;
552 void *addr;
553 dma_addr_t bus_addr;
554 dma_addr_t table_mask;
555 struct drm_dma_handle *table_handle;
556 drm_local_map_t mapping;
557 int table_size;
558};
559
560/**
561 * DRM driver structure. This structure represent the common code for
562 * a family of cards. There will one drm_device for each card present
563 * in this family
564 */
565struct drm_driver {
566 int (*load) (struct drm_device *, unsigned long flags);
567 int (*firstopen) (struct drm_device *);
568 int (*open) (struct drm_device *, struct drm_file *);
569 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
570 void (*postclose) (struct drm_device *, struct drm_file *);
571 void (*lastclose) (struct drm_device *);
572 int (*unload) (struct drm_device *);
573 int (*suspend) (struct drm_device *, pm_message_t state);
574 int (*resume) (struct drm_device *);
575 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
576 void (*dma_ready) (struct drm_device *);
577 int (*dma_quiescent) (struct drm_device *);
578 int (*context_ctor) (struct drm_device *dev, int context);
579 int (*context_dtor) (struct drm_device *dev, int context);
580 int (*kernel_context_switch) (struct drm_device *dev, int old,
581 int new);
582 void (*kernel_context_switch_unlock) (struct drm_device *dev);
583 int (*vblank_wait) (struct drm_device *dev, unsigned int *sequence);
584 int (*vblank_wait2) (struct drm_device *dev, unsigned int *sequence);
585 int (*dri_library_name) (struct drm_device *dev, char *buf);
586
587 /**
588 * Called by \c drm_device_is_agp. Typically used to determine if a
589 * card is really attached to AGP or not.
590 *
591 * \param dev DRM device handle
592 *
593 * \returns
594 * One of three values is returned depending on whether or not the
595 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
596 * (return of 1), or may or may not be AGP (return of 2).
597 */
598 int (*device_is_agp) (struct drm_device *dev);
599
600 /* these have to be filled in */
601
602 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
603 void (*irq_preinstall) (struct drm_device *dev);
604 void (*irq_postinstall) (struct drm_device *dev);
605 void (*irq_uninstall) (struct drm_device *dev);
606 void (*reclaim_buffers) (struct drm_device *dev,
607 struct drm_file * file_priv);
608 void (*reclaim_buffers_locked) (struct drm_device *dev,
609 struct drm_file *file_priv);
610 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
611 struct drm_file *file_priv);
612 unsigned long (*get_map_ofs) (struct drm_map * map);
613 unsigned long (*get_reg_ofs) (struct drm_device *dev);
614 void (*set_version) (struct drm_device *dev,
615 struct drm_set_version *sv);
616
617 int major;
618 int minor;
619 int patchlevel;
620 char *name;
621 char *desc;
622 char *date;
623
624 u32 driver_features;
625 int dev_priv_size;
626 struct drm_ioctl_desc *ioctls;
627 int num_ioctls;
628 struct file_operations fops;
629 struct pci_driver pci_driver;
630};
631
632#define DRM_MINOR_UNASSIGNED 0
633#define DRM_MINOR_LEGACY 1
634
635/**
636 * DRM minor structure. This structure represents a drm minor number.
637 */
638struct drm_minor {
639 int index; /**< Minor device number */
640 int type; /**< Control or render */
641 dev_t device; /**< Device number for mknod */
642 struct device kdev; /**< Linux device */
643 struct drm_device *dev;
644 struct proc_dir_entry *dev_root; /**< proc directory entry */
645};
646
647/**
648 * DRM device structure. This structure represent a complete card that
649 * may contain multiple heads.
650 */
651struct drm_device {
652 char *unique; /**< Unique identifier: e.g., busid */
653 int unique_len; /**< Length of unique field */
654 char *devname; /**< For /proc/interrupts */
655 int if_version; /**< Highest interface version set */
656
657 int blocked; /**< Blocked due to VC switch? */
658
659 /** \name Locks */
660 /*@{ */
661 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
662 struct mutex struct_mutex; /**< For others */
663 /*@} */
664
665 /** \name Usage Counters */
666 /*@{ */
667 int open_count; /**< Outstanding files open */
668 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
669 atomic_t vma_count; /**< Outstanding vma areas open */
670 int buf_use; /**< Buffers in use -- cannot alloc */
671 atomic_t buf_alloc; /**< Buffer allocation in progress */
672 /*@} */
673
674 /** \name Performance counters */
675 /*@{ */
676 unsigned long counters;
677 enum drm_stat_type types[15];
678 atomic_t counts[15];
679 /*@} */
680
681 /** \name Authentication */
682 /*@{ */
683 struct list_head filelist;
684 struct drm_open_hash magiclist; /**< magic hash table */
685 struct list_head magicfree;
686 /*@} */
687
688 /** \name Memory management */
689 /*@{ */
690 struct list_head maplist; /**< Linked list of regions */
691 int map_count; /**< Number of mappable regions */
692 struct drm_open_hash map_hash; /**< User token hash table for maps */
693
694 /** \name Context handle management */
695 /*@{ */
696 struct list_head ctxlist; /**< Linked list of context handles */
697 int ctx_count; /**< Number of context handles */
698 struct mutex ctxlist_mutex; /**< For ctxlist */
699
700 struct idr ctx_idr;
701
702 struct list_head vmalist; /**< List of vmas (for debugging) */
703 struct drm_lock_data lock; /**< Information on hardware lock */
704 /*@} */
705
706 /** \name DMA queues (contexts) */
707 /*@{ */
708 int queue_count; /**< Number of active DMA queues */
709 int queue_reserved; /**< Number of reserved DMA queues */
710 int queue_slots; /**< Actual length of queuelist */
711 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
712 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
713 /*@} */
714
715 /** \name Context support */
716 /*@{ */
717 int irq; /**< Interrupt used by board */
718 int irq_enabled; /**< True if irq handler is enabled */
719 __volatile__ long context_flag; /**< Context swapping flag */
720 __volatile__ long interrupt_flag; /**< Interruption handler flag */
721 __volatile__ long dma_flag; /**< DMA dispatch flag */
722 struct timer_list timer; /**< Timer for delaying ctx switch */
723 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
724 int last_checked; /**< Last context checked for DMA */
725 int last_context; /**< Last current context */
726 unsigned long last_switch; /**< jiffies at last context switch */
727 /*@} */
728
729 struct work_struct work;
730 /** \name VBLANK IRQ support */
731 /*@{ */
732
733 wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
734 atomic_t vbl_received;
735 atomic_t vbl_received2; /**< number of secondary VBLANK interrupts */
736 spinlock_t vbl_lock;
737 struct list_head vbl_sigs; /**< signal list to send on VBLANK */
738 struct list_head vbl_sigs2; /**< signals to send on secondary VBLANK */
739 unsigned int vbl_pending;
740 spinlock_t tasklet_lock; /**< For drm_locked_tasklet */
741 void (*locked_tasklet_func)(struct drm_device *dev);
742
743 /*@} */
744 cycles_t ctx_start;
745 cycles_t lck_start;
746
747 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
748 wait_queue_head_t buf_readers; /**< Processes waiting to read */
749 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
750
751 struct drm_agp_head *agp; /**< AGP data */
752
753 struct pci_dev *pdev; /**< PCI device structure */
754 int pci_vendor; /**< PCI vendor id */
755 int pci_device; /**< PCI device id */
756#ifdef __alpha__
757 struct pci_controller *hose;
758#endif
759 struct drm_sg_mem *sg; /**< Scatter gather memory */
760 void *dev_private; /**< device private data */
761 struct drm_sigdata sigdata; /**< For block_all_signals */
762 sigset_t sigmask;
763
764 struct drm_driver *driver;
765 drm_local_map_t *agp_buffer_map;
766 unsigned int agp_buffer_token;
767 struct drm_minor *primary; /**< render type primary screen head */
768
769 /** \name Drawable information */
770 /*@{ */
771 spinlock_t drw_lock;
772 struct idr drw_idr;
773 /*@} */
774};
775
776static __inline__ int drm_core_check_feature(struct drm_device *dev,
777 int feature)
778{
779 return ((dev->driver->driver_features & feature) ? 1 : 0);
780}
781
782#ifdef __alpha__
783#define drm_get_pci_domain(dev) dev->hose->index
784#else
785#define drm_get_pci_domain(dev) 0
786#endif
787
788#if __OS_HAS_AGP
789static inline int drm_core_has_AGP(struct drm_device *dev)
790{
791 return drm_core_check_feature(dev, DRIVER_USE_AGP);
792}
793#else
794#define drm_core_has_AGP(dev) (0)
795#endif
796
797#if __OS_HAS_MTRR
798static inline int drm_core_has_MTRR(struct drm_device *dev)
799{
800 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
801}
802
803#define DRM_MTRR_WC MTRR_TYPE_WRCOMB
804
805static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
806 unsigned int flags)
807{
808 return mtrr_add(offset, size, flags, 1);
809}
810
811static inline int drm_mtrr_del(int handle, unsigned long offset,
812 unsigned long size, unsigned int flags)
813{
814 return mtrr_del(handle, offset, size);
815}
816
817#else
818#define drm_core_has_MTRR(dev) (0)
819
820#define DRM_MTRR_WC 0
821
822static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
823 unsigned int flags)
824{
825 return 0;
826}
827
828static inline int drm_mtrr_del(int handle, unsigned long offset,
829 unsigned long size, unsigned int flags)
830{
831 return 0;
832}
833#endif
834
835/******************************************************************/
836/** \name Internal function definitions */
837/*@{*/
838
839 /* Driver support (drm_drv.h) */
840extern int drm_init(struct drm_driver *driver);
841extern void drm_exit(struct drm_driver *driver);
842extern int drm_ioctl(struct inode *inode, struct file *filp,
843 unsigned int cmd, unsigned long arg);
844extern long drm_compat_ioctl(struct file *filp,
845 unsigned int cmd, unsigned long arg);
846extern int drm_lastclose(struct drm_device *dev);
847
848 /* Device support (drm_fops.h) */
849extern int drm_open(struct inode *inode, struct file *filp);
850extern int drm_stub_open(struct inode *inode, struct file *filp);
851extern int drm_fasync(int fd, struct file *filp, int on);
852extern int drm_release(struct inode *inode, struct file *filp);
853
854 /* Mapping support (drm_vm.h) */
855extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
856extern unsigned long drm_core_get_map_ofs(struct drm_map * map);
857extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
858extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
859
860 /* Memory management support (drm_memory.h) */
861#include "drm_memory.h"
862extern void drm_mem_init(void);
863extern int drm_mem_info(char *buf, char **start, off_t offset,
864 int request, int *eof, void *data);
865extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
866
867extern DRM_AGP_MEM *drm_alloc_agp(struct drm_device *dev, int pages, u32 type);
868extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
869extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
870extern int drm_unbind_agp(DRM_AGP_MEM * handle);
871
872 /* Misc. IOCTL support (drm_ioctl.h) */
873extern int drm_irq_by_busid(struct drm_device *dev, void *data,
874 struct drm_file *file_priv);
875extern int drm_getunique(struct drm_device *dev, void *data,
876 struct drm_file *file_priv);
877extern int drm_setunique(struct drm_device *dev, void *data,
878 struct drm_file *file_priv);
879extern int drm_getmap(struct drm_device *dev, void *data,
880 struct drm_file *file_priv);
881extern int drm_getclient(struct drm_device *dev, void *data,
882 struct drm_file *file_priv);
883extern int drm_getstats(struct drm_device *dev, void *data,
884 struct drm_file *file_priv);
885extern int drm_setversion(struct drm_device *dev, void *data,
886 struct drm_file *file_priv);
887extern int drm_noop(struct drm_device *dev, void *data,
888 struct drm_file *file_priv);
889
890 /* Context IOCTL support (drm_context.h) */
891extern int drm_resctx(struct drm_device *dev, void *data,
892 struct drm_file *file_priv);
893extern int drm_addctx(struct drm_device *dev, void *data,
894 struct drm_file *file_priv);
895extern int drm_modctx(struct drm_device *dev, void *data,
896 struct drm_file *file_priv);
897extern int drm_getctx(struct drm_device *dev, void *data,
898 struct drm_file *file_priv);
899extern int drm_switchctx(struct drm_device *dev, void *data,
900 struct drm_file *file_priv);
901extern int drm_newctx(struct drm_device *dev, void *data,
902 struct drm_file *file_priv);
903extern int drm_rmctx(struct drm_device *dev, void *data,
904 struct drm_file *file_priv);
905
906extern int drm_ctxbitmap_init(struct drm_device *dev);
907extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
908extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
909
910extern int drm_setsareactx(struct drm_device *dev, void *data,
911 struct drm_file *file_priv);
912extern int drm_getsareactx(struct drm_device *dev, void *data,
913 struct drm_file *file_priv);
914
915 /* Drawable IOCTL support (drm_drawable.h) */
916extern int drm_adddraw(struct drm_device *dev, void *data,
917 struct drm_file *file_priv);
918extern int drm_rmdraw(struct drm_device *dev, void *data,
919 struct drm_file *file_priv);
920extern int drm_update_drawable_info(struct drm_device *dev, void *data,
921 struct drm_file *file_priv);
922extern struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
923 drm_drawable_t id);
924extern void drm_drawable_free_all(struct drm_device *dev);
925
926 /* Authentication IOCTL support (drm_auth.h) */
927extern int drm_getmagic(struct drm_device *dev, void *data,
928 struct drm_file *file_priv);
929extern int drm_authmagic(struct drm_device *dev, void *data,
930 struct drm_file *file_priv);
931
932 /* Locking IOCTL support (drm_lock.h) */
933extern int drm_lock(struct drm_device *dev, void *data,
934 struct drm_file *file_priv);
935extern int drm_unlock(struct drm_device *dev, void *data,
936 struct drm_file *file_priv);
937extern int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
938extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
939extern void drm_idlelock_take(struct drm_lock_data *lock_data);
940extern void drm_idlelock_release(struct drm_lock_data *lock_data);
941
942/*
943 * These are exported to drivers so that they can implement fencing using
944 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
945 */
946
947extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
948
949 /* Buffer management support (drm_bufs.h) */
950extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
951extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
952extern int drm_addmap(struct drm_device *dev, unsigned int offset,
953 unsigned int size, enum drm_map_type type,
954 enum drm_map_flags flags, drm_local_map_t ** map_ptr);
955extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
956 struct drm_file *file_priv);
957extern int drm_rmmap(struct drm_device *dev, drm_local_map_t *map);
958extern int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *map);
959extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
960 struct drm_file *file_priv);
961extern int drm_addbufs(struct drm_device *dev, void *data,
962 struct drm_file *file_priv);
963extern int drm_infobufs(struct drm_device *dev, void *data,
964 struct drm_file *file_priv);
965extern int drm_markbufs(struct drm_device *dev, void *data,
966 struct drm_file *file_priv);
967extern int drm_freebufs(struct drm_device *dev, void *data,
968 struct drm_file *file_priv);
969extern int drm_mapbufs(struct drm_device *dev, void *data,
970 struct drm_file *file_priv);
971extern int drm_order(unsigned long size);
972extern unsigned long drm_get_resource_start(struct drm_device *dev,
973 unsigned int resource);
974extern unsigned long drm_get_resource_len(struct drm_device *dev,
975 unsigned int resource);
976
977 /* DMA support (drm_dma.h) */
978extern int drm_dma_setup(struct drm_device *dev);
979extern void drm_dma_takedown(struct drm_device *dev);
980extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
981extern void drm_core_reclaim_buffers(struct drm_device *dev,
982 struct drm_file *filp);
983
984 /* IRQ support (drm_irq.h) */
985extern int drm_control(struct drm_device *dev, void *data,
986 struct drm_file *file_priv);
987extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
988extern int drm_irq_uninstall(struct drm_device *dev);
989extern void drm_driver_irq_preinstall(struct drm_device *dev);
990extern void drm_driver_irq_postinstall(struct drm_device *dev);
991extern void drm_driver_irq_uninstall(struct drm_device *dev);
992
993extern int drm_wait_vblank(struct drm_device *dev, void *data,
994 struct drm_file *file_priv);
995extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
996extern void drm_vbl_send_signals(struct drm_device *dev);
997extern void drm_locked_tasklet(struct drm_device *dev, void(*func)(struct drm_device*));
998
999 /* AGP/GART support (drm_agpsupport.h) */
1000extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1001extern int drm_agp_acquire(struct drm_device *dev);
1002extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1003 struct drm_file *file_priv);
1004extern int drm_agp_release(struct drm_device *dev);
1005extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1006 struct drm_file *file_priv);
1007extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1008extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1009 struct drm_file *file_priv);
1010extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1011extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1012 struct drm_file *file_priv);
1013extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1014extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1015 struct drm_file *file_priv);
1016extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1017extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1018 struct drm_file *file_priv);
1019extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1020extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1021 struct drm_file *file_priv);
1022extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1023extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1024 struct drm_file *file_priv);
1025extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type);
1026extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1027extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1028extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1029
1030 /* Stub support (drm_stub.h) */
1031extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1032 struct drm_driver *driver);
1033extern int drm_put_dev(struct drm_device *dev);
1034extern int drm_put_minor(struct drm_minor **minor);
1035extern unsigned int drm_debug;
1036
1037extern struct class *drm_class;
1038extern struct proc_dir_entry *drm_proc_root;
1039
1040extern struct idr drm_minors_idr;
1041
1042extern drm_local_map_t *drm_getsarea(struct drm_device *dev);
1043
1044 /* Proc support (drm_proc.h) */
1045extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1046 struct proc_dir_entry *root);
1047extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1048
1049 /* Scatter Gather Support (drm_scatter.h) */
1050extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1051extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1052 struct drm_file *file_priv);
1053extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1054extern int drm_sg_free(struct drm_device *dev, void *data,
1055 struct drm_file *file_priv);
1056
1057 /* ATI PCIGART support (ati_pcigart.h) */
1058extern int drm_ati_pcigart_init(struct drm_device *dev,
1059 struct drm_ati_pcigart_info * gart_info);
1060extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1061 struct drm_ati_pcigart_info * gart_info);
1062
1063extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1064 size_t align, dma_addr_t maxaddr);
1065extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1066extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1067
1068 /* sysfs support (drm_sysfs.c) */
1069struct drm_sysfs_class;
1070extern struct class *drm_sysfs_create(struct module *owner, char *name);
1071extern void drm_sysfs_destroy(void);
1072extern int drm_sysfs_device_add(struct drm_minor *minor);
1073extern void drm_sysfs_device_remove(struct drm_minor *minor);
1074
1075/*
1076 * Basic memory manager support (drm_mm.c)
1077 */
1078extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node * parent,
1079 unsigned long size,
1080 unsigned alignment);
1081extern void drm_mm_put_block(struct drm_mm_node * cur);
1082extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, unsigned long size,
1083 unsigned alignment, int best_match);
1084extern int drm_mm_init(struct drm_mm *mm, unsigned long start, unsigned long size);
1085extern void drm_mm_takedown(struct drm_mm *mm);
1086extern int drm_mm_clean(struct drm_mm *mm);
1087extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
1088extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, unsigned long size);
1089extern int drm_mm_add_space_to_tail(struct drm_mm *mm, unsigned long size);
1090
1091extern void drm_core_ioremap(struct drm_map *map, struct drm_device *dev);
1092extern void drm_core_ioremap_wc(struct drm_map *map, struct drm_device *dev);
1093extern void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev);
1094
1095static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev,
1096 unsigned int token)
1097{
1098 struct drm_map_list *_entry;
1099 list_for_each_entry(_entry, &dev->maplist, head)
1100 if (_entry->user_token == token)
1101 return _entry->map;
1102 return NULL;
1103}
1104
1105static __inline__ int drm_device_is_agp(struct drm_device *dev)
1106{
1107 if (dev->driver->device_is_agp != NULL) {
1108 int err = (*dev->driver->device_is_agp) (dev);
1109
1110 if (err != 2) {
1111 return err;
1112 }
1113 }
1114
1115 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1116}
1117
1118static __inline__ int drm_device_is_pcie(struct drm_device *dev)
1119{
1120 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1121}
1122
1123static __inline__ void drm_core_dropmap(struct drm_map *map)
1124{
1125}
1126
1127#ifndef DEBUG_MEMORY
1128/** Wrapper around kmalloc() */
1129static __inline__ void *drm_alloc(size_t size, int area)
1130{
1131 return kmalloc(size, GFP_KERNEL);
1132}
1133
1134/** Wrapper around kfree() */
1135static __inline__ void drm_free(void *pt, size_t size, int area)
1136{
1137 kfree(pt);
1138}
1139
1140/** Wrapper around kcalloc() */
1141static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1142{
1143 return kcalloc(nmemb, size, GFP_KERNEL);
1144}
1145#else
1146extern void *drm_alloc(size_t size, int area);
1147extern void drm_free(void *pt, size_t size, int area);
1148extern void *drm_calloc(size_t nmemb, size_t size, int area);
1149#endif
1150
1151/*@}*/
1152
1153#endif /* __KERNEL__ */
1154#endif
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