3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
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
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.
37 /* If you want the memory alloc debug functionality, change define below */
38 /* #define DEBUG_MEMORY */
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>
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 */
58 #include <linux/cdev.h>
59 #include <linux/mutex.h>
60 #if defined(__alpha__) || defined(__powerpc__)
61 #include <asm/pgtable.h> /* For pte_wrprotect */
65 #include <asm/uaccess.h>
69 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
70 #include <linux/types.h>
71 #include <linux/agp_backend.h>
73 #include <linux/workqueue.h>
74 #include <linux/poll.h>
75 #include <asm/pgalloc.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 */
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... */
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
148 /***********************************************************************/
149 /** \name Macros to make printk easier */
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)
177 * \param fmt printf() like format string.
178 * \param arg arguments
181 #define DRM_DEBUG(fmt, arg...) \
185 "[" DRM_NAME ":%s] " fmt , \
186 __FUNCTION__ , ##arg); \
189 #define DRM_DEBUG(fmt, arg...) do { } while (0)
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; }
204 /***********************************************************************/
205 /** \name Internal types and structures */
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]; \
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 ) \
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", \
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 ) ) \
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,
269 #define DRM_MASTER 0x2
270 #define DRM_ROOT_ONLY 0x4
272 typedef struct drm_ioctl_desc {
277 typedef struct drm_devstate {
278 pid_t owner; /**< X server pid holding x_lock */
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;
288 typedef struct drm_magic_head {
289 struct drm_magic_entry *head;
290 struct drm_magic_entry *tail;
293 typedef struct drm_vma_entry {
294 struct vm_area_struct *vma;
295 struct drm_vma_entry *next;
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 */
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 */
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;
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 */
353 typedef struct drm_dma_handle {
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 */
368 drm_dma_handle_t **seglist;
370 drm_freelist_t freelist;
373 /** File private data */
374 typedef struct drm_file {
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;
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 */
400 atomic_t total_queued; /**< Total queued statistic */
401 atomic_t total_flushed; /**< Total flushes statistic */
402 atomic_t total_locks; /**< Total locks statistics */
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 */
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 */
418 uint32_t kernel_waiters;
419 uint32_t user_waiters;
426 typedef struct drm_device_dma {
428 drm_buf_entry_t bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
429 int buf_count; /**< total number of buffers */
430 drm_buf_t **buflist; /**< Vector of pointers into drm_device_dma::bufs */
432 int page_count; /**< number of pages */
433 unsigned long *pagelist; /**< page list */
434 unsigned long byte_count;
436 _DRM_DMA_USE_AGP = 0x01,
437 _DRM_DMA_USE_SG = 0x02,
438 _DRM_DMA_USE_FB = 0x04,
439 _DRM_DMA_USE_PCI_RO = 0x08
445 * AGP memory entry. Stored as a doubly linked list.
447 typedef struct drm_agp_mem {
448 unsigned long handle; /**< handle */
450 unsigned long bound; /**< address */
452 struct drm_agp_mem *prev; /**< previous entry */
453 struct drm_agp_mem *next; /**< next entry */
459 * \sa drm_agp_init() and drm_device::agp.
461 typedef struct drm_agp_head {
462 DRM_AGP_KERN agp_info; /**< AGP device information */
463 drm_agp_mem_t *memory; /**< memory entries */
464 unsigned long mode; /**< AGP mode */
465 struct agp_bridge_data *bridge;
466 int enabled; /**< whether the AGP bus as been enabled */
467 int acquired; /**< whether the AGP device has been acquired */
470 int cant_use_aperture;
471 unsigned long page_mask;
475 * Scatter-gather memory.
477 typedef struct drm_sg_mem {
478 unsigned long handle;
481 struct page **pagelist;
485 typedef struct drm_sigdata {
493 typedef struct drm_map_list {
494 struct list_head head; /**< list head */
495 drm_hash_item_t hash;
496 drm_map_t *map; /**< mapping */
497 unsigned int user_token;
500 typedef drm_map_t drm_local_map_t;
503 * Context handle list
505 typedef struct drm_ctx_list {
506 struct list_head head; /**< list head */
507 drm_context_t handle; /**< context handle */
508 drm_file_t *tag; /**< associated fd private data */
511 typedef struct drm_vbl_sig {
512 struct list_head head;
513 unsigned int sequence;
515 struct task_struct *task;
518 /* location of GART table */
519 #define DRM_ATI_GART_MAIN 1
520 #define DRM_ATI_GART_FB 2
522 typedef struct ati_pcigart_info {
523 int gart_table_location;
527 drm_local_map_t mapping;
528 } drm_ati_pcigart_info;
531 * Generic memory manager structs
533 typedef struct drm_mm_node {
534 struct list_head fl_entry;
535 struct list_head ml_entry;
543 typedef struct drm_mm {
544 struct list_head fl_entry;
545 struct list_head ml_entry;
549 * DRM driver structure. This structure represent the common code for
550 * a family of cards. There will one drm_device for each card present
556 int (*load) (struct drm_device *, unsigned long flags);
557 int (*firstopen) (struct drm_device *);
558 int (*open) (struct drm_device *, drm_file_t *);
559 void (*preclose) (struct drm_device *, struct file * filp);
560 void (*postclose) (struct drm_device *, drm_file_t *);
561 void (*lastclose) (struct drm_device *);
562 int (*unload) (struct drm_device *);
563 int (*dma_ioctl) (DRM_IOCTL_ARGS);
564 void (*dma_ready) (struct drm_device *);
565 int (*dma_quiescent) (struct drm_device *);
566 int (*context_ctor) (struct drm_device * dev, int context);
567 int (*context_dtor) (struct drm_device * dev, int context);
568 int (*kernel_context_switch) (struct drm_device * dev, int old,
570 void (*kernel_context_switch_unlock) (struct drm_device * dev);
571 int (*vblank_wait) (struct drm_device * dev, unsigned int *sequence);
572 int (*vblank_wait2) (struct drm_device * dev, unsigned int *sequence);
573 int (*dri_library_name) (struct drm_device *dev, char *buf);
576 * Called by \c drm_device_is_agp. Typically used to determine if a
577 * card is really attached to AGP or not.
579 * \param dev DRM device handle
582 * One of three values is returned depending on whether or not the
583 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
584 * (return of 1), or may or may not be AGP (return of 2).
586 int (*device_is_agp) (struct drm_device * dev);
588 /* these have to be filled in */
590 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
591 void (*irq_preinstall) (struct drm_device * dev);
592 void (*irq_postinstall) (struct drm_device * dev);
593 void (*irq_uninstall) (struct drm_device * dev);
594 void (*reclaim_buffers) (struct drm_device * dev, struct file * filp);
595 void (*reclaim_buffers_locked) (struct drm_device *dev,
597 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
599 unsigned long (*get_map_ofs) (drm_map_t * map);
600 unsigned long (*get_reg_ofs) (struct drm_device * dev);
601 void (*set_version) (struct drm_device * dev, drm_set_version_t * sv);
612 drm_ioctl_desc_t *ioctls;
614 struct file_operations fops;
615 struct pci_driver pci_driver;
619 * DRM head structure. This structure represent a video head on a card
620 * that may contain multiple heads. Embed one per head of these in the
621 * private drm_device structure.
623 typedef struct drm_head {
624 int minor; /**< Minor device number */
625 struct drm_device *dev;
626 struct proc_dir_entry *dev_root; /**< proc directory entry */
627 dev_t device; /**< Device number for mknod */
628 struct class_device *dev_class;
632 * DRM device structure. This structure represent a complete card that
633 * may contain multiple heads.
635 typedef struct drm_device {
636 char *unique; /**< Unique identifier: e.g., busid */
637 int unique_len; /**< Length of unique field */
638 char *devname; /**< For /proc/interrupts */
639 int if_version; /**< Highest interface version set */
641 int blocked; /**< Blocked due to VC switch? */
645 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
646 struct mutex struct_mutex; /**< For others */
649 /** \name Usage Counters */
651 int open_count; /**< Outstanding files open */
652 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
653 atomic_t vma_count; /**< Outstanding vma areas open */
654 int buf_use; /**< Buffers in use -- cannot alloc */
655 atomic_t buf_alloc; /**< Buffer allocation in progress */
658 /** \name Performance counters */
660 unsigned long counters;
661 drm_stat_type_t types[15];
665 /** \name Authentication */
667 drm_file_t *file_first; /**< file list head */
668 drm_file_t *file_last; /**< file list tail */
669 drm_open_hash_t magiclist; /**< magic hash table */
670 struct list_head magicfree;
673 /** \name Memory management */
675 drm_map_list_t *maplist; /**< Linked list of regions */
676 int map_count; /**< Number of mappable regions */
677 drm_open_hash_t map_hash; /**< User token hash table for maps */
679 /** \name Context handle management */
681 drm_ctx_list_t *ctxlist; /**< Linked list of context handles */
682 int ctx_count; /**< Number of context handles */
683 struct mutex ctxlist_mutex; /**< For ctxlist */
685 drm_map_t **context_sareas; /**< per-context SAREA's */
688 drm_vma_entry_t *vmalist; /**< List of vmas (for debugging) */
689 drm_lock_data_t lock; /**< Information on hardware lock */
692 /** \name DMA queues (contexts) */
694 int queue_count; /**< Number of active DMA queues */
695 int queue_reserved; /**< Number of reserved DMA queues */
696 int queue_slots; /**< Actual length of queuelist */
697 drm_queue_t **queuelist; /**< Vector of pointers to DMA queues */
698 drm_device_dma_t *dma; /**< Optional pointer for DMA support */
701 /** \name Context support */
703 int irq; /**< Interrupt used by board */
704 int irq_enabled; /**< True if irq handler is enabled */
705 __volatile__ long context_flag; /**< Context swapping flag */
706 __volatile__ long interrupt_flag; /**< Interruption handler flag */
707 __volatile__ long dma_flag; /**< DMA dispatch flag */
708 struct timer_list timer; /**< Timer for delaying ctx switch */
709 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
710 int last_checked; /**< Last context checked for DMA */
711 int last_context; /**< Last current context */
712 unsigned long last_switch; /**< jiffies at last context switch */
715 struct work_struct work;
716 /** \name VBLANK IRQ support */
719 wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
720 atomic_t vbl_received;
721 atomic_t vbl_received2; /**< number of secondary VBLANK interrupts */
723 drm_vbl_sig_t vbl_sigs; /**< signal list to send on VBLANK */
724 drm_vbl_sig_t vbl_sigs2; /**< signals to send on secondary VBLANK */
725 unsigned int vbl_pending;
726 spinlock_t tasklet_lock; /**< For drm_locked_tasklet */
727 void (*locked_tasklet_func)(struct drm_device *dev);
733 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
734 wait_queue_head_t buf_readers; /**< Processes waiting to read */
735 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
737 drm_agp_head_t *agp; /**< AGP data */
739 struct pci_dev *pdev; /**< PCI device structure */
740 int pci_vendor; /**< PCI vendor id */
741 int pci_device; /**< PCI device id */
743 struct pci_controller *hose;
745 drm_sg_mem_t *sg; /**< Scatter gather memory */
746 unsigned long *ctx_bitmap; /**< context bitmap */
747 void *dev_private; /**< device private data */
748 drm_sigdata_t sigdata; /**< For block_all_signals */
751 struct drm_driver *driver;
752 drm_local_map_t *agp_buffer_map;
753 unsigned int agp_buffer_token;
754 drm_head_t primary; /**< primary screen head */
756 /** \name Drawable information */
759 unsigned int drw_bitfield_length;
761 unsigned int drw_info_length;
762 drm_drawable_info_t **drw_info;
766 static __inline__ int drm_core_check_feature(struct drm_device *dev,
769 return ((dev->driver->driver_features & feature) ? 1 : 0);
773 #define drm_get_pci_domain(dev) dev->hose->index
775 #define drm_get_pci_domain(dev) 0
779 static inline int drm_core_has_AGP(struct drm_device *dev)
781 return drm_core_check_feature(dev, DRIVER_USE_AGP);
784 #define drm_core_has_AGP(dev) (0)
788 static inline int drm_core_has_MTRR(struct drm_device *dev)
790 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
793 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
795 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
798 return mtrr_add(offset, size, flags, 1);
801 static inline int drm_mtrr_del(int handle, unsigned long offset,
802 unsigned long size, unsigned int flags)
804 return mtrr_del(handle, offset, size);
808 #define drm_core_has_MTRR(dev) (0)
810 #define DRM_MTRR_WC 0
812 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
818 static inline int drm_mtrr_del(int handle, unsigned long offset,
819 unsigned long size, unsigned int flags)
825 /******************************************************************/
826 /** \name Internal function definitions */
829 /* Driver support (drm_drv.h) */
830 extern int drm_init(struct drm_driver *driver);
831 extern void drm_exit(struct drm_driver *driver);
832 extern int drm_ioctl(struct inode *inode, struct file *filp,
833 unsigned int cmd, unsigned long arg);
834 extern long drm_compat_ioctl(struct file *filp,
835 unsigned int cmd, unsigned long arg);
836 extern int drm_lastclose(drm_device_t *dev);
838 /* Device support (drm_fops.h) */
839 extern int drm_open(struct inode *inode, struct file *filp);
840 extern int drm_stub_open(struct inode *inode, struct file *filp);
841 extern int drm_fasync(int fd, struct file *filp, int on);
842 extern int drm_release(struct inode *inode, struct file *filp);
844 /* Mapping support (drm_vm.h) */
845 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
846 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
848 /* Memory management support (drm_memory.h) */
849 #include "drm_memory.h"
850 extern void drm_mem_init(void);
851 extern int drm_mem_info(char *buf, char **start, off_t offset,
852 int request, int *eof, void *data);
853 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
855 extern DRM_AGP_MEM *drm_alloc_agp(drm_device_t * dev, int pages, u32 type);
856 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
857 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
858 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
860 /* Misc. IOCTL support (drm_ioctl.h) */
861 extern int drm_irq_by_busid(struct inode *inode, struct file *filp,
862 unsigned int cmd, unsigned long arg);
863 extern int drm_getunique(struct inode *inode, struct file *filp,
864 unsigned int cmd, unsigned long arg);
865 extern int drm_setunique(struct inode *inode, struct file *filp,
866 unsigned int cmd, unsigned long arg);
867 extern int drm_getmap(struct inode *inode, struct file *filp,
868 unsigned int cmd, unsigned long arg);
869 extern int drm_getclient(struct inode *inode, struct file *filp,
870 unsigned int cmd, unsigned long arg);
871 extern int drm_getstats(struct inode *inode, struct file *filp,
872 unsigned int cmd, unsigned long arg);
873 extern int drm_setversion(struct inode *inode, struct file *filp,
874 unsigned int cmd, unsigned long arg);
875 extern int drm_noop(struct inode *inode, struct file *filp,
876 unsigned int cmd, unsigned long arg);
878 /* Context IOCTL support (drm_context.h) */
879 extern int drm_resctx(struct inode *inode, struct file *filp,
880 unsigned int cmd, unsigned long arg);
881 extern int drm_addctx(struct inode *inode, struct file *filp,
882 unsigned int cmd, unsigned long arg);
883 extern int drm_modctx(struct inode *inode, struct file *filp,
884 unsigned int cmd, unsigned long arg);
885 extern int drm_getctx(struct inode *inode, struct file *filp,
886 unsigned int cmd, unsigned long arg);
887 extern int drm_switchctx(struct inode *inode, struct file *filp,
888 unsigned int cmd, unsigned long arg);
889 extern int drm_newctx(struct inode *inode, struct file *filp,
890 unsigned int cmd, unsigned long arg);
891 extern int drm_rmctx(struct inode *inode, struct file *filp,
892 unsigned int cmd, unsigned long arg);
894 extern int drm_ctxbitmap_init(drm_device_t * dev);
895 extern void drm_ctxbitmap_cleanup(drm_device_t * dev);
896 extern void drm_ctxbitmap_free(drm_device_t * dev, int ctx_handle);
898 extern int drm_setsareactx(struct inode *inode, struct file *filp,
899 unsigned int cmd, unsigned long arg);
900 extern int drm_getsareactx(struct inode *inode, struct file *filp,
901 unsigned int cmd, unsigned long arg);
903 /* Drawable IOCTL support (drm_drawable.h) */
904 extern int drm_adddraw(struct inode *inode, struct file *filp,
905 unsigned int cmd, unsigned long arg);
906 extern int drm_rmdraw(struct inode *inode, struct file *filp,
907 unsigned int cmd, unsigned long arg);
908 extern int drm_update_drawable_info(struct inode *inode, struct file *filp,
909 unsigned int cmd, unsigned long arg);
910 extern drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev,
913 /* Authentication IOCTL support (drm_auth.h) */
914 extern int drm_getmagic(struct inode *inode, struct file *filp,
915 unsigned int cmd, unsigned long arg);
916 extern int drm_authmagic(struct inode *inode, struct file *filp,
917 unsigned int cmd, unsigned long arg);
919 /* Locking IOCTL support (drm_lock.h) */
920 extern int drm_lock(struct inode *inode, struct file *filp,
921 unsigned int cmd, unsigned long arg);
922 extern int drm_unlock(struct inode *inode, struct file *filp,
923 unsigned int cmd, unsigned long arg);
924 extern int drm_lock_take(drm_lock_data_t *lock_data, unsigned int context);
925 extern int drm_lock_free(drm_lock_data_t *lock_data, unsigned int context);
926 extern void drm_idlelock_take(drm_lock_data_t *lock_data);
927 extern void drm_idlelock_release(drm_lock_data_t *lock_data);
930 * These are exported to drivers so that they can implement fencing using
931 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
934 extern int drm_i_have_hw_lock(struct file *filp);
935 extern int drm_kernel_take_hw_lock(struct file *filp);
937 /* Buffer management support (drm_bufs.h) */
938 extern int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request);
939 extern int drm_addbufs_pci(drm_device_t * dev, drm_buf_desc_t * request);
940 extern int drm_addmap(drm_device_t * dev, unsigned int offset,
941 unsigned int size, drm_map_type_t type,
942 drm_map_flags_t flags, drm_local_map_t ** map_ptr);
943 extern int drm_addmap_ioctl(struct inode *inode, struct file *filp,
944 unsigned int cmd, unsigned long arg);
945 extern int drm_rmmap(drm_device_t * dev, drm_local_map_t * map);
946 extern int drm_rmmap_locked(drm_device_t * dev, drm_local_map_t * map);
947 extern int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
948 unsigned int cmd, unsigned long arg);
950 extern int drm_order(unsigned long size);
951 extern int drm_addbufs(struct inode *inode, struct file *filp,
952 unsigned int cmd, unsigned long arg);
953 extern int drm_infobufs(struct inode *inode, struct file *filp,
954 unsigned int cmd, unsigned long arg);
955 extern int drm_markbufs(struct inode *inode, struct file *filp,
956 unsigned int cmd, unsigned long arg);
957 extern int drm_freebufs(struct inode *inode, struct file *filp,
958 unsigned int cmd, unsigned long arg);
959 extern int drm_mapbufs(struct inode *inode, struct file *filp,
960 unsigned int cmd, unsigned long arg);
961 extern unsigned long drm_get_resource_start(drm_device_t * dev,
962 unsigned int resource);
963 extern unsigned long drm_get_resource_len(drm_device_t * dev,
964 unsigned int resource);
966 /* DMA support (drm_dma.h) */
967 extern int drm_dma_setup(drm_device_t * dev);
968 extern void drm_dma_takedown(drm_device_t * dev);
969 extern void drm_free_buffer(drm_device_t * dev, drm_buf_t * buf);
970 extern void drm_core_reclaim_buffers(drm_device_t * dev, struct file *filp);
972 /* IRQ support (drm_irq.h) */
973 extern int drm_control(struct inode *inode, struct file *filp,
974 unsigned int cmd, unsigned long arg);
975 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
976 extern int drm_irq_uninstall(drm_device_t * dev);
977 extern void drm_driver_irq_preinstall(drm_device_t * dev);
978 extern void drm_driver_irq_postinstall(drm_device_t * dev);
979 extern void drm_driver_irq_uninstall(drm_device_t * dev);
981 extern int drm_wait_vblank(struct inode *inode, struct file *filp,
982 unsigned int cmd, unsigned long arg);
983 extern int drm_vblank_wait(drm_device_t * dev, unsigned int *vbl_seq);
984 extern void drm_vbl_send_signals(drm_device_t * dev);
985 extern void drm_locked_tasklet(drm_device_t *dev, void(*func)(drm_device_t*));
987 /* AGP/GART support (drm_agpsupport.h) */
988 extern drm_agp_head_t *drm_agp_init(drm_device_t * dev);
989 extern int drm_agp_acquire(drm_device_t * dev);
990 extern int drm_agp_acquire_ioctl(struct inode *inode, struct file *filp,
991 unsigned int cmd, unsigned long arg);
992 extern int drm_agp_release(drm_device_t * dev);
993 extern int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
994 unsigned int cmd, unsigned long arg);
995 extern int drm_agp_enable(drm_device_t * dev, drm_agp_mode_t mode);
996 extern int drm_agp_enable_ioctl(struct inode *inode, struct file *filp,
997 unsigned int cmd, unsigned long arg);
998 extern int drm_agp_info(drm_device_t * dev, drm_agp_info_t * info);
999 extern int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
1000 unsigned int cmd, unsigned long arg);
1001 extern int drm_agp_alloc(drm_device_t *dev, drm_agp_buffer_t *request);
1002 extern int drm_agp_alloc_ioctl(struct inode *inode, struct file *filp,
1003 unsigned int cmd, unsigned long arg);
1004 extern int drm_agp_free(drm_device_t *dev, drm_agp_buffer_t *request);
1005 extern int drm_agp_free_ioctl(struct inode *inode, struct file *filp,
1006 unsigned int cmd, unsigned long arg);
1007 extern int drm_agp_unbind(drm_device_t *dev, drm_agp_binding_t *request);
1008 extern int drm_agp_unbind_ioctl(struct inode *inode, struct file *filp,
1009 unsigned int cmd, unsigned long arg);
1010 extern int drm_agp_bind(drm_device_t *dev, drm_agp_binding_t *request);
1011 extern int drm_agp_bind_ioctl(struct inode *inode, struct file *filp,
1012 unsigned int cmd, unsigned long arg);
1013 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge,
1014 size_t pages, u32 type);
1015 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1016 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1017 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1019 /* Stub support (drm_stub.h) */
1020 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1021 struct drm_driver *driver);
1022 extern int drm_put_dev(drm_device_t * dev);
1023 extern int drm_put_head(drm_head_t * head);
1024 extern unsigned int drm_debug;
1025 extern unsigned int drm_cards_limit;
1026 extern drm_head_t **drm_heads;
1027 extern struct class *drm_class;
1028 extern struct proc_dir_entry *drm_proc_root;
1030 /* Proc support (drm_proc.h) */
1031 extern int drm_proc_init(drm_device_t * dev,
1033 struct proc_dir_entry *root,
1034 struct proc_dir_entry **dev_root);
1035 extern int drm_proc_cleanup(int minor,
1036 struct proc_dir_entry *root,
1037 struct proc_dir_entry *dev_root);
1039 /* Scatter Gather Support (drm_scatter.h) */
1040 extern void drm_sg_cleanup(drm_sg_mem_t * entry);
1041 extern int drm_sg_alloc(struct inode *inode, struct file *filp,
1042 unsigned int cmd, unsigned long arg);
1043 extern int drm_sg_free(struct inode *inode, struct file *filp,
1044 unsigned int cmd, unsigned long arg);
1046 /* ATI PCIGART support (ati_pcigart.h) */
1047 extern int drm_ati_pcigart_init(drm_device_t * dev,
1048 drm_ati_pcigart_info * gart_info);
1049 extern int drm_ati_pcigart_cleanup(drm_device_t * dev,
1050 drm_ati_pcigart_info * gart_info);
1052 extern drm_dma_handle_t *drm_pci_alloc(drm_device_t * dev, size_t size,
1053 size_t align, dma_addr_t maxaddr);
1054 extern void __drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah);
1055 extern void drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah);
1057 /* sysfs support (drm_sysfs.c) */
1058 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1059 extern void drm_sysfs_destroy(struct class *cs);
1060 extern struct class_device *drm_sysfs_device_add(struct class *cs,
1062 extern void drm_sysfs_device_remove(struct class_device *class_dev);
1065 * Basic memory manager support (drm_mm.c)
1067 extern drm_mm_node_t *drm_mm_get_block(drm_mm_node_t * parent,
1069 unsigned alignment);
1070 void drm_mm_put_block(drm_mm_node_t * cur);
1071 extern drm_mm_node_t *drm_mm_search_free(const drm_mm_t *mm, unsigned long size,
1072 unsigned alignment, int best_match);
1073 extern int drm_mm_init(drm_mm_t *mm, unsigned long start, unsigned long size);
1074 extern void drm_mm_takedown(drm_mm_t *mm);
1075 extern int drm_mm_clean(drm_mm_t *mm);
1076 extern unsigned long drm_mm_tail_space(drm_mm_t *mm);
1077 extern int drm_mm_remove_space_from_tail(drm_mm_t *mm, unsigned long size);
1078 extern int drm_mm_add_space_to_tail(drm_mm_t *mm, unsigned long size);
1080 extern void drm_core_ioremap(struct drm_map *map, struct drm_device *dev);
1081 extern void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev);
1083 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev,
1086 drm_map_list_t *_entry;
1087 list_for_each_entry(_entry, &dev->maplist->head, head)
1088 if (_entry->user_token == token)
1093 static __inline__ int drm_device_is_agp(drm_device_t * dev)
1095 if (dev->driver->device_is_agp != NULL) {
1096 int err = (*dev->driver->device_is_agp) (dev);
1103 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1106 static __inline__ int drm_device_is_pcie(drm_device_t * dev)
1108 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1111 static __inline__ void drm_core_dropmap(struct drm_map *map)
1115 #ifndef DEBUG_MEMORY
1116 /** Wrapper around kmalloc() */
1117 static __inline__ void *drm_alloc(size_t size, int area)
1119 return kmalloc(size, GFP_KERNEL);
1122 /** Wrapper around kfree() */
1123 static __inline__ void drm_free(void *pt, size_t size, int area)
1128 /** Wrapper around kcalloc() */
1129 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1131 return kcalloc(nmemb, size, GFP_KERNEL);
1134 extern void *drm_alloc(size_t size, int area);
1135 extern void drm_free(void *pt, size_t size, int area);
1136 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1141 extern unsigned long drm_core_get_map_ofs(drm_map_t * map);
1142 extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
1144 #endif /* __KERNEL__ */