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 */
57 #include <linux/dma-mapping.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 */
66 #include <asm/uaccess.h>
70 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
71 #include <linux/types.h>
72 #include <linux/agp_backend.h>
74 #include <linux/workqueue.h>
75 #include <linux/poll.h>
76 #include <asm/pgalloc.h>
79 #include <linux/idr.h>
81 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
82 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
87 #include "drm_os_linux.h"
88 #include "drm_hashtab.h"
90 /***********************************************************************/
91 /** \name DRM template customization defaults */
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 #define DRIVER_GEM 0x1000
108 #define DRIVER_MODESET 0x2000
110 /***********************************************************************/
111 /** \name Begin the DRM... */
114 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
115 also include looping detection. */
117 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
118 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
119 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
120 #define DRM_LOOPING_LIMIT 5000000
121 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
122 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
124 #define DRM_FLAG_DEBUG 0x01
126 #define DRM_MEM_DMA 0
127 #define DRM_MEM_SAREA 1
128 #define DRM_MEM_DRIVER 2
129 #define DRM_MEM_MAGIC 3
130 #define DRM_MEM_IOCTLS 4
131 #define DRM_MEM_MAPS 5
132 #define DRM_MEM_VMAS 6
133 #define DRM_MEM_BUFS 7
134 #define DRM_MEM_SEGS 8
135 #define DRM_MEM_PAGES 9
136 #define DRM_MEM_FILES 10
137 #define DRM_MEM_QUEUES 11
138 #define DRM_MEM_CMDS 12
139 #define DRM_MEM_MAPPINGS 13
140 #define DRM_MEM_BUFLISTS 14
141 #define DRM_MEM_AGPLISTS 15
142 #define DRM_MEM_TOTALAGP 16
143 #define DRM_MEM_BOUNDAGP 17
144 #define DRM_MEM_CTXBITMAP 18
145 #define DRM_MEM_STUB 19
146 #define DRM_MEM_SGLISTS 20
147 #define DRM_MEM_CTXLIST 21
148 #define DRM_MEM_MM 22
149 #define DRM_MEM_HASHTAB 23
151 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
152 #define DRM_MAP_HASH_OFFSET 0x10000000
156 /***********************************************************************/
157 /** \name Macros to make printk easier */
163 * \param fmt printf() like format string.
164 * \param arg arguments
166 #define DRM_ERROR(fmt, arg...) \
167 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
170 * Memory error output.
172 * \param area memory area where the error occurred.
173 * \param fmt printf() like format string.
174 * \param arg arguments
176 #define DRM_MEM_ERROR(area, fmt, arg...) \
177 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
178 drm_mem_stats[area].name , ##arg)
180 #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
185 * \param fmt printf() like format string.
186 * \param arg arguments
189 #define DRM_DEBUG(fmt, arg...) \
193 "[" DRM_NAME ":%s] " fmt , \
197 #define DRM_DEBUG(fmt, arg...) do { } while (0)
200 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
202 #define DRM_PROC_PRINT(fmt, arg...) \
203 len += sprintf(&buf[len], fmt , ##arg); \
204 if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
206 #define DRM_PROC_PRINT_RET(ret, fmt, arg...) \
207 len += sprintf(&buf[len], fmt , ##arg); \
208 if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
212 /***********************************************************************/
213 /** \name Internal types and structures */
216 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
218 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
219 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
220 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
222 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
224 * Get the private SAREA mapping.
226 * \param _dev DRM device.
227 * \param _ctx context number.
228 * \param _map output mapping.
230 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \
231 (_map) = (_dev)->context_sareas[_ctx]; \
235 * Test that the hardware lock is held by the caller, returning otherwise.
237 * \param dev DRM device.
238 * \param filp file pointer of the caller.
240 #define LOCK_TEST_WITH_RETURN( dev, file_priv ) \
242 if (!_DRM_LOCK_IS_HELD(file_priv->master->lock.hw_lock->lock) || \
243 file_priv->master->lock.file_priv != file_priv) { \
244 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
245 __func__, _DRM_LOCK_IS_HELD(file_priv->master->lock.hw_lock->lock),\
246 file_priv->master->lock.file_priv, file_priv); \
252 * Copy and IOCTL return string to user space
254 #define DRM_COPY( name, value ) \
255 len = strlen( value ); \
256 if ( len > name##_len ) len = name##_len; \
257 name##_len = strlen( value ); \
258 if ( len && name ) { \
259 if ( copy_to_user( name, value, len ) ) \
264 * Ioctl function type.
266 * \param inode device inode.
267 * \param file_priv DRM file private pointer.
268 * \param cmd command.
269 * \param arg argument.
271 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
272 struct drm_file *file_priv);
274 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
278 #define DRM_MASTER 0x2
279 #define DRM_ROOT_ONLY 0x4
280 #define DRM_CONTROL_ALLOW 0x8
282 struct drm_ioctl_desc {
289 * Creates a driver or general drm_ioctl_desc array entry for the given
290 * ioctl, for use by drm_ioctl().
292 #define DRM_IOCTL_DEF(ioctl, _func, _flags) \
293 [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags}
295 struct drm_magic_entry {
296 struct list_head head;
297 struct drm_hash_item hash_item;
298 struct drm_file *priv;
301 struct drm_vma_entry {
302 struct list_head head;
303 struct vm_area_struct *vma;
311 int idx; /**< Index into master buflist */
312 int total; /**< Buffer size */
313 int order; /**< log-base-2(total) */
314 int used; /**< Amount of buffer in use (for DMA) */
315 unsigned long offset; /**< Byte offset (used internally) */
316 void *address; /**< Address of buffer */
317 unsigned long bus_address; /**< Bus address of buffer */
318 struct drm_buf *next; /**< Kernel-only: used for free list */
319 __volatile__ int waiting; /**< On kernel DMA queue */
320 __volatile__ int pending; /**< On hardware DMA queue */
321 wait_queue_head_t dma_wait; /**< Processes waiting */
322 struct drm_file *file_priv; /**< Private of holding file descr */
323 int context; /**< Kernel queue for this buffer */
324 int while_locked; /**< Dispatch this buffer while locked */
332 } list; /**< Which list we're on */
334 int dev_priv_size; /**< Size of buffer private storage */
335 void *dev_private; /**< Per-buffer private storage */
338 /** bufs is one longer than it has to be */
339 struct drm_waitlist {
340 int count; /**< Number of possible buffers */
341 struct drm_buf **bufs; /**< List of pointers to buffers */
342 struct drm_buf **rp; /**< Read pointer */
343 struct drm_buf **wp; /**< Write pointer */
344 struct drm_buf **end; /**< End pointer */
345 spinlock_t read_lock;
346 spinlock_t write_lock;
349 struct drm_freelist {
350 int initialized; /**< Freelist in use */
351 atomic_t count; /**< Number of free buffers */
352 struct drm_buf *next; /**< End pointer */
354 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
355 int low_mark; /**< Low water mark */
356 int high_mark; /**< High water mark */
357 atomic_t wfh; /**< If waiting for high mark */
361 typedef struct drm_dma_handle {
368 * Buffer entry. There is one of this for each buffer size order.
370 struct drm_buf_entry {
371 int buf_size; /**< size */
372 int buf_count; /**< number of buffers */
373 struct drm_buf *buflist; /**< buffer list */
376 struct drm_dma_handle **seglist;
378 struct drm_freelist freelist;
381 /** File private data */
387 unsigned long ioctl_count;
388 struct list_head lhead;
389 struct drm_minor *minor;
390 unsigned long lock_count;
392 /** Mapping of mm object handles to object pointers. */
393 struct idr object_idr;
394 /** Lock for synchronization of access to object_idr. */
395 spinlock_t table_lock;
400 int is_master; /* this file private is a master for a minor */
401 struct drm_master *master; /* master this node is currently associated with
402 N.B. not always minor->master */
403 struct list_head fbs;
408 atomic_t use_count; /**< Outstanding uses (+1) */
409 atomic_t finalization; /**< Finalization in progress */
410 atomic_t block_count; /**< Count of processes waiting */
411 atomic_t block_read; /**< Queue blocked for reads */
412 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
413 atomic_t block_write; /**< Queue blocked for writes */
414 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
415 atomic_t total_queued; /**< Total queued statistic */
416 atomic_t total_flushed; /**< Total flushes statistic */
417 atomic_t total_locks; /**< Total locks statistics */
418 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
419 struct drm_waitlist waitlist; /**< Pending buffers */
420 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
426 struct drm_lock_data {
427 struct drm_hw_lock *hw_lock; /**< Hardware lock */
428 /** Private of lock holder's file (NULL=kernel) */
429 struct drm_file *file_priv;
430 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
431 unsigned long lock_time; /**< Time of last lock in jiffies */
433 uint32_t kernel_waiters;
434 uint32_t user_waiters;
441 struct drm_device_dma {
443 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
444 int buf_count; /**< total number of buffers */
445 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
447 int page_count; /**< number of pages */
448 unsigned long *pagelist; /**< page list */
449 unsigned long byte_count;
451 _DRM_DMA_USE_AGP = 0x01,
452 _DRM_DMA_USE_SG = 0x02,
453 _DRM_DMA_USE_FB = 0x04,
454 _DRM_DMA_USE_PCI_RO = 0x08
460 * AGP memory entry. Stored as a doubly linked list.
463 unsigned long handle; /**< handle */
465 unsigned long bound; /**< address */
467 struct list_head head;
473 * \sa drm_agp_init() and drm_device::agp.
475 struct drm_agp_head {
476 DRM_AGP_KERN agp_info; /**< AGP device information */
477 struct list_head memory;
478 unsigned long mode; /**< AGP mode */
479 struct agp_bridge_data *bridge;
480 int enabled; /**< whether the AGP bus as been enabled */
481 int acquired; /**< whether the AGP device has been acquired */
484 int cant_use_aperture;
485 unsigned long page_mask;
489 * Scatter-gather memory.
492 unsigned long handle;
495 struct page **pagelist;
501 struct drm_hw_lock *lock;
506 * Generic memory manager structs
510 struct list_head fl_entry;
511 struct list_head ml_entry;
520 struct list_head fl_entry;
521 struct list_head ml_entry;
526 * Kernel side of a mapping
528 struct drm_local_map {
529 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
530 unsigned long size; /**< Requested physical size (bytes) */
531 enum drm_map_type type; /**< Type of memory to map */
532 enum drm_map_flags flags; /**< Flags */
533 void *handle; /**< User-space: "Handle" to pass to mmap() */
534 /**< Kernel-space: kernel-virtual address */
535 int mtrr; /**< MTRR slot used */
538 typedef struct drm_local_map drm_local_map_t;
543 struct drm_map_list {
544 struct list_head head; /**< list head */
545 struct drm_hash_item hash;
546 struct drm_local_map *map; /**< mapping */
548 struct drm_master *master;
549 struct drm_mm_node *file_offset_node; /**< fake offset */
553 * Context handle list
555 struct drm_ctx_list {
556 struct list_head head; /**< list head */
557 drm_context_t handle; /**< context handle */
558 struct drm_file *tag; /**< associated fd private data */
561 /* location of GART table */
562 #define DRM_ATI_GART_MAIN 1
563 #define DRM_ATI_GART_FB 2
565 #define DRM_ATI_GART_PCI 1
566 #define DRM_ATI_GART_PCIE 2
567 #define DRM_ATI_GART_IGP 3
569 struct drm_ati_pcigart_info {
570 int gart_table_location;
574 dma_addr_t table_mask;
575 struct drm_dma_handle *table_handle;
576 struct drm_local_map mapping;
581 * GEM specific mm private for tracking GEM objects
584 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
585 struct drm_open_hash offset_hash; /**< User token hash table for maps */
589 * This structure defines the drm_mm memory object, which will be used by the
590 * DRM for its buffer objects.
592 struct drm_gem_object {
593 /** Reference count of this object */
594 struct kref refcount;
596 /** Handle count of this object. Each handle also holds a reference */
597 struct kref handlecount;
599 /** Related drm device */
600 struct drm_device *dev;
602 /** File representing the shmem storage */
605 /* Mapping info for this object */
606 struct drm_map_list map_list;
609 * Size of the object, in bytes. Immutable over the object's
615 * Global name for this object, starts at 1. 0 means unnamed.
616 * Access is covered by the object_name_lock in the related drm_device
621 * Memory domains. These monitor which caches contain read/write data
622 * related to the object. When transitioning from one set of domains
623 * to another, the driver is called to ensure that caches are suitably
624 * flushed and invalidated
626 uint32_t read_domains;
627 uint32_t write_domain;
630 * While validating an exec operation, the
631 * new read/write domain values are computed here.
632 * They will be transferred to the above values
633 * at the point that any cache flushing occurs
635 uint32_t pending_read_domains;
636 uint32_t pending_write_domain;
638 void *driver_private;
641 #include "drm_crtc.h"
643 /* per-master structure */
646 struct kref refcount; /* refcount for this master */
648 struct list_head head; /**< each minor contains a list of masters */
649 struct drm_minor *minor; /**< link back to minor we are a master for */
651 char *unique; /**< Unique identifier: e.g., busid */
652 int unique_len; /**< Length of unique field */
653 int unique_size; /**< amount allocated */
655 int blocked; /**< Blocked due to VC switch? */
657 /** \name Authentication */
659 struct drm_open_hash magiclist;
660 struct list_head magicfree;
663 struct drm_lock_data lock; /**< Information on hardware lock */
665 void *driver_priv; /**< Private structure for driver to use */
669 * DRM driver structure. This structure represent the common code for
670 * a family of cards. There will one drm_device for each card present
674 int (*load) (struct drm_device *, unsigned long flags);
675 int (*firstopen) (struct drm_device *);
676 int (*open) (struct drm_device *, struct drm_file *);
677 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
678 void (*postclose) (struct drm_device *, struct drm_file *);
679 void (*lastclose) (struct drm_device *);
680 int (*unload) (struct drm_device *);
681 int (*suspend) (struct drm_device *, pm_message_t state);
682 int (*resume) (struct drm_device *);
683 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
684 void (*dma_ready) (struct drm_device *);
685 int (*dma_quiescent) (struct drm_device *);
686 int (*context_ctor) (struct drm_device *dev, int context);
687 int (*context_dtor) (struct drm_device *dev, int context);
688 int (*kernel_context_switch) (struct drm_device *dev, int old,
690 void (*kernel_context_switch_unlock) (struct drm_device *dev);
693 * get_vblank_counter - get raw hardware vblank counter
695 * @crtc: counter to fetch
697 * Driver callback for fetching a raw hardware vblank counter
698 * for @crtc. If a device doesn't have a hardware counter, the
699 * driver can simply return the value of drm_vblank_count and
700 * make the enable_vblank() and disable_vblank() hooks into no-ops,
701 * leaving interrupts enabled at all times.
703 * Wraparound handling and loss of events due to modesetting is dealt
704 * with in the DRM core code.
707 * Raw vblank counter value.
709 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
712 * enable_vblank - enable vblank interrupt events
714 * @crtc: which irq to enable
716 * Enable vblank interrupts for @crtc. If the device doesn't have
717 * a hardware vblank counter, this routine should be a no-op, since
718 * interrupts will have to stay on to keep the count accurate.
721 * Zero on success, appropriate errno if the given @crtc's vblank
722 * interrupt cannot be enabled.
724 int (*enable_vblank) (struct drm_device *dev, int crtc);
727 * disable_vblank - disable vblank interrupt events
729 * @crtc: which irq to enable
731 * Disable vblank interrupts for @crtc. If the device doesn't have
732 * a hardware vblank counter, this routine should be a no-op, since
733 * interrupts will have to stay on to keep the count accurate.
735 void (*disable_vblank) (struct drm_device *dev, int crtc);
738 * Called by \c drm_device_is_agp. Typically used to determine if a
739 * card is really attached to AGP or not.
741 * \param dev DRM device handle
744 * One of three values is returned depending on whether or not the
745 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
746 * (return of 1), or may or may not be AGP (return of 2).
748 int (*device_is_agp) (struct drm_device *dev);
750 /* these have to be filled in */
752 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
753 void (*irq_preinstall) (struct drm_device *dev);
754 int (*irq_postinstall) (struct drm_device *dev);
755 void (*irq_uninstall) (struct drm_device *dev);
756 void (*reclaim_buffers) (struct drm_device *dev,
757 struct drm_file * file_priv);
758 void (*reclaim_buffers_locked) (struct drm_device *dev,
759 struct drm_file *file_priv);
760 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
761 struct drm_file *file_priv);
762 resource_size_t (*get_map_ofs) (struct drm_local_map * map);
763 resource_size_t (*get_reg_ofs) (struct drm_device *dev);
764 void (*set_version) (struct drm_device *dev,
765 struct drm_set_version *sv);
767 /* Master routines */
768 int (*master_create)(struct drm_device *dev, struct drm_master *master);
769 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
771 int (*proc_init)(struct drm_minor *minor);
772 void (*proc_cleanup)(struct drm_minor *minor);
773 int (*debugfs_init)(struct drm_minor *minor);
774 void (*debugfs_cleanup)(struct drm_minor *minor);
777 * Driver-specific constructor for drm_gem_objects, to set up
778 * obj->driver_private.
780 * Returns 0 on success.
782 int (*gem_init_object) (struct drm_gem_object *obj);
783 void (*gem_free_object) (struct drm_gem_object *obj);
785 /* Driver private ops for this object */
786 struct vm_operations_struct *gem_vm_ops;
797 struct drm_ioctl_desc *ioctls;
799 struct file_operations fops;
800 struct pci_driver pci_driver;
801 /* List of devices hanging off this driver */
802 struct list_head device_list;
805 #define DRM_MINOR_UNASSIGNED 0
806 #define DRM_MINOR_LEGACY 1
807 #define DRM_MINOR_CONTROL 2
808 #define DRM_MINOR_RENDER 3
812 * debugfs node list. This structure represents a debugfs file to
813 * be created by the drm core
815 struct drm_debugfs_list {
816 const char *name; /** file name */
817 int (*show)(struct seq_file*, void*); /** show callback */
818 u32 driver_features; /**< Required driver features for this entry */
822 * debugfs node structure. This structure represents a debugfs file.
824 struct drm_debugfs_node {
825 struct list_head list;
826 struct drm_minor *minor;
827 struct drm_debugfs_list *debugfs_ent;
832 * Info file list entry. This structure represents a debugfs or proc file to
833 * be created by the drm core
835 struct drm_info_list {
836 const char *name; /** file name */
837 int (*show)(struct seq_file*, void*); /** show callback */
838 u32 driver_features; /**< Required driver features for this entry */
843 * debugfs node structure. This structure represents a debugfs file.
845 struct drm_info_node {
846 struct list_head list;
847 struct drm_minor *minor;
848 struct drm_info_list *info_ent;
853 * DRM minor structure. This structure represents a drm minor number.
856 int index; /**< Minor device number */
857 int type; /**< Control or render */
858 dev_t device; /**< Device number for mknod */
859 struct device kdev; /**< Linux device */
860 struct drm_device *dev;
862 struct proc_dir_entry *proc_root; /**< proc directory entry */
863 struct drm_info_node proc_nodes;
864 struct dentry *debugfs_root;
865 struct drm_info_node debugfs_nodes;
867 struct drm_master *master; /* currently active master for this node */
868 struct list_head master_list;
869 struct drm_mode_group mode_group;
873 * DRM device structure. This structure represent a complete card that
874 * may contain multiple heads.
877 struct list_head driver_item; /**< list of devices per driver */
878 char *devname; /**< For /proc/interrupts */
879 int if_version; /**< Highest interface version set */
883 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
884 struct mutex struct_mutex; /**< For others */
887 /** \name Usage Counters */
889 int open_count; /**< Outstanding files open */
890 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
891 atomic_t vma_count; /**< Outstanding vma areas open */
892 int buf_use; /**< Buffers in use -- cannot alloc */
893 atomic_t buf_alloc; /**< Buffer allocation in progress */
896 /** \name Performance counters */
898 unsigned long counters;
899 enum drm_stat_type types[15];
903 struct list_head filelist;
905 /** \name Memory management */
907 struct list_head maplist; /**< Linked list of regions */
908 int map_count; /**< Number of mappable regions */
909 struct drm_open_hash map_hash; /**< User token hash table for maps */
911 /** \name Context handle management */
913 struct list_head ctxlist; /**< Linked list of context handles */
914 int ctx_count; /**< Number of context handles */
915 struct mutex ctxlist_mutex; /**< For ctxlist */
919 struct list_head vmalist; /**< List of vmas (for debugging) */
923 /** \name DMA queues (contexts) */
925 int queue_count; /**< Number of active DMA queues */
926 int queue_reserved; /**< Number of reserved DMA queues */
927 int queue_slots; /**< Actual length of queuelist */
928 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
929 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
932 /** \name Context support */
934 int irq_enabled; /**< True if irq handler is enabled */
935 __volatile__ long context_flag; /**< Context swapping flag */
936 __volatile__ long interrupt_flag; /**< Interruption handler flag */
937 __volatile__ long dma_flag; /**< DMA dispatch flag */
938 struct timer_list timer; /**< Timer for delaying ctx switch */
939 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
940 int last_checked; /**< Last context checked for DMA */
941 int last_context; /**< Last current context */
942 unsigned long last_switch; /**< jiffies at last context switch */
945 struct work_struct work;
946 /** \name VBLANK IRQ support */
950 * At load time, disabling the vblank interrupt won't be allowed since
951 * old clients may not call the modeset ioctl and therefore misbehave.
952 * Once the modeset ioctl *has* been called though, we can safely
953 * disable them when unused.
955 int vblank_disable_allowed;
957 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
958 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
960 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
961 u32 *last_vblank; /* protected by dev->vbl_lock, used */
962 /* for wraparound handling */
963 int *vblank_enabled; /* so we don't call enable more than
965 int *vblank_inmodeset; /* Display driver is setting mode */
966 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
967 struct timer_list vblank_disable_timer;
969 u32 max_vblank_count; /**< size of vblank counter register */
975 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
976 wait_queue_head_t buf_readers; /**< Processes waiting to read */
977 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
979 struct drm_agp_head *agp; /**< AGP data */
981 struct pci_dev *pdev; /**< PCI device structure */
982 int pci_vendor; /**< PCI vendor id */
983 int pci_device; /**< PCI device id */
985 struct pci_controller *hose;
987 struct drm_sg_mem *sg; /**< Scatter gather memory */
988 int num_crtcs; /**< Number of CRTCs on this device */
989 void *dev_private; /**< device private data */
991 struct address_space *dev_mapping;
992 struct drm_sigdata sigdata; /**< For block_all_signals */
995 struct drm_driver *driver;
996 struct drm_local_map *agp_buffer_map;
997 unsigned int agp_buffer_token;
998 struct drm_minor *control; /**< Control node for card */
999 struct drm_minor *primary; /**< render type primary screen head */
1001 /** \name Drawable information */
1003 spinlock_t drw_lock;
1007 struct drm_mode_config mode_config; /**< Current mode config */
1009 /** \name GEM information */
1011 spinlock_t object_name_lock;
1012 struct idr object_name_idr;
1013 atomic_t object_count;
1014 atomic_t object_memory;
1016 atomic_t pin_memory;
1018 atomic_t gtt_memory;
1020 uint32_t invalidate_domains; /* domains pending invalidation */
1021 uint32_t flush_domains; /* domains pending flush */
1026 static inline int drm_dev_to_irq(struct drm_device *dev)
1028 return dev->pdev->irq;
1031 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1034 return ((dev->driver->driver_features & feature) ? 1 : 0);
1038 #define drm_get_pci_domain(dev) dev->hose->index
1040 #define drm_get_pci_domain(dev) 0
1044 static inline int drm_core_has_AGP(struct drm_device *dev)
1046 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1049 #define drm_core_has_AGP(dev) (0)
1053 static inline int drm_core_has_MTRR(struct drm_device *dev)
1055 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1058 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1060 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1063 return mtrr_add(offset, size, flags, 1);
1066 static inline int drm_mtrr_del(int handle, unsigned long offset,
1067 unsigned long size, unsigned int flags)
1069 return mtrr_del(handle, offset, size);
1073 #define drm_core_has_MTRR(dev) (0)
1075 #define DRM_MTRR_WC 0
1077 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1083 static inline int drm_mtrr_del(int handle, unsigned long offset,
1084 unsigned long size, unsigned int flags)
1090 /******************************************************************/
1091 /** \name Internal function definitions */
1094 /* Driver support (drm_drv.h) */
1095 extern int drm_init(struct drm_driver *driver);
1096 extern void drm_exit(struct drm_driver *driver);
1097 extern int drm_ioctl(struct inode *inode, struct file *filp,
1098 unsigned int cmd, unsigned long arg);
1099 extern long drm_compat_ioctl(struct file *filp,
1100 unsigned int cmd, unsigned long arg);
1101 extern int drm_lastclose(struct drm_device *dev);
1103 /* Device support (drm_fops.h) */
1104 extern int drm_open(struct inode *inode, struct file *filp);
1105 extern int drm_stub_open(struct inode *inode, struct file *filp);
1106 extern int drm_fasync(int fd, struct file *filp, int on);
1107 extern int drm_release(struct inode *inode, struct file *filp);
1109 /* Mapping support (drm_vm.h) */
1110 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1111 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1112 extern void drm_vm_open_locked(struct vm_area_struct *vma);
1113 extern resource_size_t drm_core_get_map_ofs(struct drm_local_map * map);
1114 extern resource_size_t drm_core_get_reg_ofs(struct drm_device *dev);
1115 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1117 /* Memory management support (drm_memory.h) */
1118 #include "drm_memory.h"
1119 extern void drm_mem_init(void);
1120 extern int drm_mem_info(char *buf, char **start, off_t offset,
1121 int request, int *eof, void *data);
1122 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1124 extern DRM_AGP_MEM *drm_alloc_agp(struct drm_device *dev, int pages, u32 type);
1125 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
1126 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1127 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1128 struct page **pages,
1129 unsigned long num_pages,
1130 uint32_t gtt_offset,
1132 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1134 /* Misc. IOCTL support (drm_ioctl.h) */
1135 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1136 struct drm_file *file_priv);
1137 extern int drm_getunique(struct drm_device *dev, void *data,
1138 struct drm_file *file_priv);
1139 extern int drm_setunique(struct drm_device *dev, void *data,
1140 struct drm_file *file_priv);
1141 extern int drm_getmap(struct drm_device *dev, void *data,
1142 struct drm_file *file_priv);
1143 extern int drm_getclient(struct drm_device *dev, void *data,
1144 struct drm_file *file_priv);
1145 extern int drm_getstats(struct drm_device *dev, void *data,
1146 struct drm_file *file_priv);
1147 extern int drm_setversion(struct drm_device *dev, void *data,
1148 struct drm_file *file_priv);
1149 extern int drm_noop(struct drm_device *dev, void *data,
1150 struct drm_file *file_priv);
1152 /* Context IOCTL support (drm_context.h) */
1153 extern int drm_resctx(struct drm_device *dev, void *data,
1154 struct drm_file *file_priv);
1155 extern int drm_addctx(struct drm_device *dev, void *data,
1156 struct drm_file *file_priv);
1157 extern int drm_modctx(struct drm_device *dev, void *data,
1158 struct drm_file *file_priv);
1159 extern int drm_getctx(struct drm_device *dev, void *data,
1160 struct drm_file *file_priv);
1161 extern int drm_switchctx(struct drm_device *dev, void *data,
1162 struct drm_file *file_priv);
1163 extern int drm_newctx(struct drm_device *dev, void *data,
1164 struct drm_file *file_priv);
1165 extern int drm_rmctx(struct drm_device *dev, void *data,
1166 struct drm_file *file_priv);
1168 extern int drm_ctxbitmap_init(struct drm_device *dev);
1169 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1170 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1172 extern int drm_setsareactx(struct drm_device *dev, void *data,
1173 struct drm_file *file_priv);
1174 extern int drm_getsareactx(struct drm_device *dev, void *data,
1175 struct drm_file *file_priv);
1177 /* Drawable IOCTL support (drm_drawable.h) */
1178 extern int drm_adddraw(struct drm_device *dev, void *data,
1179 struct drm_file *file_priv);
1180 extern int drm_rmdraw(struct drm_device *dev, void *data,
1181 struct drm_file *file_priv);
1182 extern int drm_update_drawable_info(struct drm_device *dev, void *data,
1183 struct drm_file *file_priv);
1184 extern struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
1186 extern void drm_drawable_free_all(struct drm_device *dev);
1188 /* Authentication IOCTL support (drm_auth.h) */
1189 extern int drm_getmagic(struct drm_device *dev, void *data,
1190 struct drm_file *file_priv);
1191 extern int drm_authmagic(struct drm_device *dev, void *data,
1192 struct drm_file *file_priv);
1194 /* Cache management (drm_cache.c) */
1195 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1197 /* Locking IOCTL support (drm_lock.h) */
1198 extern int drm_lock(struct drm_device *dev, void *data,
1199 struct drm_file *file_priv);
1200 extern int drm_unlock(struct drm_device *dev, void *data,
1201 struct drm_file *file_priv);
1202 extern int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
1203 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1204 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1205 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1208 * These are exported to drivers so that they can implement fencing using
1209 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1212 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1214 /* Buffer management support (drm_bufs.h) */
1215 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1216 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1217 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1218 unsigned int size, enum drm_map_type type,
1219 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1220 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1221 struct drm_file *file_priv);
1222 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1223 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1224 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1225 struct drm_file *file_priv);
1226 extern int drm_addbufs(struct drm_device *dev, void *data,
1227 struct drm_file *file_priv);
1228 extern int drm_infobufs(struct drm_device *dev, void *data,
1229 struct drm_file *file_priv);
1230 extern int drm_markbufs(struct drm_device *dev, void *data,
1231 struct drm_file *file_priv);
1232 extern int drm_freebufs(struct drm_device *dev, void *data,
1233 struct drm_file *file_priv);
1234 extern int drm_mapbufs(struct drm_device *dev, void *data,
1235 struct drm_file *file_priv);
1236 extern int drm_order(unsigned long size);
1237 extern resource_size_t drm_get_resource_start(struct drm_device *dev,
1238 unsigned int resource);
1239 extern resource_size_t drm_get_resource_len(struct drm_device *dev,
1240 unsigned int resource);
1242 /* DMA support (drm_dma.h) */
1243 extern int drm_dma_setup(struct drm_device *dev);
1244 extern void drm_dma_takedown(struct drm_device *dev);
1245 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1246 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1247 struct drm_file *filp);
1249 /* IRQ support (drm_irq.h) */
1250 extern int drm_control(struct drm_device *dev, void *data,
1251 struct drm_file *file_priv);
1252 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1253 extern int drm_irq_install(struct drm_device *dev);
1254 extern int drm_irq_uninstall(struct drm_device *dev);
1255 extern void drm_driver_irq_preinstall(struct drm_device *dev);
1256 extern void drm_driver_irq_postinstall(struct drm_device *dev);
1257 extern void drm_driver_irq_uninstall(struct drm_device *dev);
1259 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1260 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1261 struct drm_file *filp);
1262 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1263 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1264 extern void drm_handle_vblank(struct drm_device *dev, int crtc);
1265 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1266 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1267 extern void drm_vblank_cleanup(struct drm_device *dev);
1268 /* Modesetting support */
1269 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1270 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1271 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1272 struct drm_file *file_priv);
1274 /* AGP/GART support (drm_agpsupport.h) */
1275 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1276 extern int drm_agp_acquire(struct drm_device *dev);
1277 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1278 struct drm_file *file_priv);
1279 extern int drm_agp_release(struct drm_device *dev);
1280 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1281 struct drm_file *file_priv);
1282 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1283 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1284 struct drm_file *file_priv);
1285 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1286 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1287 struct drm_file *file_priv);
1288 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1289 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1290 struct drm_file *file_priv);
1291 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1292 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1293 struct drm_file *file_priv);
1294 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1295 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1296 struct drm_file *file_priv);
1297 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1298 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1299 struct drm_file *file_priv);
1300 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type);
1301 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1302 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1303 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1304 extern void drm_agp_chipset_flush(struct drm_device *dev);
1306 /* Stub support (drm_stub.h) */
1307 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1308 struct drm_file *file_priv);
1309 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1310 struct drm_file *file_priv);
1311 struct drm_master *drm_master_create(struct drm_minor *minor);
1312 extern struct drm_master *drm_master_get(struct drm_master *master);
1313 extern void drm_master_put(struct drm_master **master);
1314 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1315 struct drm_driver *driver);
1316 extern void drm_put_dev(struct drm_device *dev);
1317 extern int drm_put_minor(struct drm_minor **minor);
1318 extern unsigned int drm_debug;
1320 extern struct class *drm_class;
1321 extern struct proc_dir_entry *drm_proc_root;
1322 extern struct dentry *drm_debugfs_root;
1324 extern struct idr drm_minors_idr;
1326 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1328 /* Proc support (drm_proc.h) */
1329 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1330 struct proc_dir_entry *root);
1331 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1333 /* Debugfs support */
1334 #if defined(CONFIG_DEBUG_FS)
1335 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1336 struct dentry *root);
1337 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1338 struct dentry *root, struct drm_minor *minor);
1339 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1340 struct drm_minor *minor);
1341 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1344 /* Info file support */
1345 extern int drm_name_info(struct seq_file *m, void *data);
1346 extern int drm_vm_info(struct seq_file *m, void *data);
1347 extern int drm_queues_info(struct seq_file *m, void *data);
1348 extern int drm_bufs_info(struct seq_file *m, void *data);
1349 extern int drm_vblank_info(struct seq_file *m, void *data);
1350 extern int drm_clients_info(struct seq_file *m, void* data);
1351 extern int drm_gem_name_info(struct seq_file *m, void *data);
1352 extern int drm_gem_object_info(struct seq_file *m, void* data);
1355 extern int drm_vma_info(struct seq_file *m, void *data);
1358 /* Scatter Gather Support (drm_scatter.h) */
1359 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1360 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1361 struct drm_file *file_priv);
1362 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1363 extern int drm_sg_free(struct drm_device *dev, void *data,
1364 struct drm_file *file_priv);
1366 /* ATI PCIGART support (ati_pcigart.h) */
1367 extern int drm_ati_pcigart_init(struct drm_device *dev,
1368 struct drm_ati_pcigart_info * gart_info);
1369 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1370 struct drm_ati_pcigart_info * gart_info);
1372 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1373 size_t align, dma_addr_t maxaddr);
1374 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1375 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1377 /* sysfs support (drm_sysfs.c) */
1378 struct drm_sysfs_class;
1379 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1380 extern void drm_sysfs_destroy(void);
1381 extern int drm_sysfs_device_add(struct drm_minor *minor);
1382 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1383 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1384 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1385 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1386 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1389 * Basic memory manager support (drm_mm.c)
1391 extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node * parent,
1393 unsigned alignment);
1394 extern void drm_mm_put_block(struct drm_mm_node * cur);
1395 extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, unsigned long size,
1396 unsigned alignment, int best_match);
1397 extern int drm_mm_init(struct drm_mm *mm, unsigned long start, unsigned long size);
1398 extern void drm_mm_takedown(struct drm_mm *mm);
1399 extern int drm_mm_clean(struct drm_mm *mm);
1400 extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
1401 extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, unsigned long size);
1402 extern int drm_mm_add_space_to_tail(struct drm_mm *mm, unsigned long size);
1404 /* Graphics Execution Manager library functions (drm_gem.c) */
1405 int drm_gem_init(struct drm_device *dev);
1406 void drm_gem_destroy(struct drm_device *dev);
1407 void drm_gem_object_free(struct kref *kref);
1408 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1410 void drm_gem_object_handle_free(struct kref *kref);
1411 void drm_gem_vm_open(struct vm_area_struct *vma);
1412 void drm_gem_vm_close(struct vm_area_struct *vma);
1413 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1416 drm_gem_object_reference(struct drm_gem_object *obj)
1418 kref_get(&obj->refcount);
1422 drm_gem_object_unreference(struct drm_gem_object *obj)
1427 kref_put(&obj->refcount, drm_gem_object_free);
1430 int drm_gem_handle_create(struct drm_file *file_priv,
1431 struct drm_gem_object *obj,
1435 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1437 drm_gem_object_reference(obj);
1438 kref_get(&obj->handlecount);
1442 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1448 * Must bump handle count first as this may be the last
1449 * ref, in which case the object would disappear before we
1450 * checked for a name
1452 kref_put(&obj->handlecount, drm_gem_object_handle_free);
1453 drm_gem_object_unreference(obj);
1456 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1457 struct drm_file *filp,
1459 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1460 struct drm_file *file_priv);
1461 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1462 struct drm_file *file_priv);
1463 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1464 struct drm_file *file_priv);
1465 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1466 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1468 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1469 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1470 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1472 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1475 struct drm_map_list *_entry;
1476 list_for_each_entry(_entry, &dev->maplist, head)
1477 if (_entry->user_token == token)
1482 static __inline__ int drm_device_is_agp(struct drm_device *dev)
1484 if (dev->driver->device_is_agp != NULL) {
1485 int err = (*dev->driver->device_is_agp) (dev);
1492 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1495 static __inline__ int drm_device_is_pcie(struct drm_device *dev)
1497 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1500 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1504 #ifndef DEBUG_MEMORY
1505 /** Wrapper around kmalloc() */
1506 static __inline__ void *drm_alloc(size_t size, int area)
1508 return kmalloc(size, GFP_KERNEL);
1511 /** Wrapper around kfree() */
1512 static __inline__ void drm_free(void *pt, size_t size, int area)
1517 /** Wrapper around kcalloc() */
1518 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1520 return kcalloc(nmemb, size, GFP_KERNEL);
1523 extern void *drm_alloc(size_t size, int area);
1524 extern void drm_free(void *pt, size_t size, int area);
1525 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1530 #endif /* __KERNEL__ */