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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.  * Copyright (c) 2009-2010, Code Aurora Forum.
  13.  * All rights reserved.
  14.  *
  15.  * Permission is hereby granted, free of charge, to any person obtaining a
  16.  * copy of this software and associated documentation files (the "Software"),
  17.  * to deal in the Software without restriction, including without limitation
  18.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  19.  * and/or sell copies of the Software, and to permit persons to whom the
  20.  * Software is furnished to do so, subject to the following conditions:
  21.  *
  22.  * The above copyright notice and this permission notice (including the next
  23.  * paragraph) shall be included in all copies or substantial portions of the
  24.  * Software.
  25.  *
  26.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  27.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  28.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  29.  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  30.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  31.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  32.  * OTHER DEALINGS IN THE SOFTWARE.
  33.  */
  34.  
  35. #ifndef _DRM_P_H_
  36. #define _DRM_P_H_
  37.  
  38. #ifdef __KERNEL__
  39. #ifdef __alpha__
  40. /* add include of current.h so that "current" is defined
  41.  * before static inline funcs in wait.h. Doing this so we
  42.  * can build the DRM (part of PI DRI). 4/21/2000 S + B */
  43. #include <asm/current.h>
  44. #endif                          /* __alpha__ */
  45.  
  46. #include <syscall.h>
  47.  
  48. #include <linux/kernel.h>
  49. #include <linux/export.h>
  50. #include <linux/errno.h>
  51. #include <linux/kref.h>
  52. #include <linux/spinlock.h>
  53. #include <linux/wait.h>
  54. #include <linux/bug.h>
  55.  
  56. //#include <linux/miscdevice.h>
  57. //#include <linux/fs.h>
  58. //#include <linux/proc_fs.h>
  59. //#include <linux/init.h>
  60. //#include <linux/file.h>
  61. #include <linux/pci.h>
  62. #include <linux/jiffies.h>
  63. //#include <linux/smp_lock.h>    /* For (un)lock_kernel */
  64. //#include <linux/dma-mapping.h>
  65. //#include <linux/mm.h>
  66. //#include <linux/cdev.h>
  67. #include <linux/mutex.h>
  68. //#include <asm/io.h>
  69. //#include <asm/mman.h>
  70. //#include <asm/uaccess.h>
  71. //#include <linux/workqueue.h>
  72. //#include <linux/poll.h>
  73. //#include <asm/pgalloc.h>
  74.  
  75. #include "drm.h"
  76.  
  77. #include <linux/idr.h>
  78.  
  79. #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
  80. #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
  81.  
  82. struct module;
  83.  
  84. struct drm_file;
  85. struct drm_device;
  86.  
  87. //#include <drm/drm_os_linux.h>
  88. #include <drm/drm_hashtab.h>
  89. #include <drm/drm_mm.h>
  90.  
  91. #define KHZ2PICOS(a) (1000000000UL/(a))
  92.  
  93. /* get_scanout_position() return flags */
  94. #define DRM_SCANOUTPOS_VALID        (1 << 0)
  95. #define DRM_SCANOUTPOS_INVBL        (1 << 1)
  96. #define DRM_SCANOUTPOS_ACCURATE     (1 << 2)
  97.  
  98.  
  99.  
  100. #define DRM_UT_CORE             0x01
  101. #define DRM_UT_DRIVER           0x02
  102. #define DRM_UT_KMS          0x04
  103. #define DRM_UT_PRIME            0x08
  104. /*
  105.  * Three debug levels are defined.
  106.  * drm_core, drm_driver, drm_kms
  107.  * drm_core level can be used in the generic drm code. For example:
  108.  *      drm_ioctl, drm_mm, drm_memory
  109.  * The macro definition of DRM_DEBUG is used.
  110.  *      DRM_DEBUG(fmt, args...)
  111.  *      The debug info by using the DRM_DEBUG can be obtained by adding
  112.  *      the boot option of "drm.debug=1".
  113.  *
  114.  * drm_driver level can be used in the specific drm driver. It is used
  115.  * to add the debug info related with the drm driver. For example:
  116.  * i915_drv, i915_dma, i915_gem, radeon_drv,
  117.  *      The macro definition of DRM_DEBUG_DRIVER can be used.
  118.  *      DRM_DEBUG_DRIVER(fmt, args...)
  119.  *      The debug info by using the DRM_DEBUG_DRIVER can be obtained by
  120.  *      adding the boot option of "drm.debug=0x02"
  121.  *
  122.  * drm_kms level can be used in the KMS code related with specific drm driver.
  123.  * It is used to add the debug info related with KMS mode. For example:
  124.  * the connector/crtc ,
  125.  *      The macro definition of DRM_DEBUG_KMS can be used.
  126.  *      DRM_DEBUG_KMS(fmt, args...)
  127.  *      The debug info by using the DRM_DEBUG_KMS can be obtained by
  128.  *      adding the boot option of "drm.debug=0x04"
  129.  *
  130.  * If we add the boot option of "drm.debug=0x06", we can get the debug info by
  131.  * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
  132.  * If we add the boot option of "drm.debug=0x05", we can get the debug info by
  133.  * using the DRM_DEBUG_KMS and DRM_DEBUG.
  134.  */
  135.  
  136. extern __printf(4, 5)
  137. void drm_ut_debug_printk(unsigned int request_level,
  138.                                 const char *prefix,
  139.                                 const char *function_name,
  140.                                 const char *format, ...);
  141. extern __printf(2, 3)
  142. int drm_err(const char *func, const char *format, ...);
  143.  
  144. /***********************************************************************/
  145. /** \name DRM template customization defaults */
  146. /*@{*/
  147.  
  148. /* driver capabilities and requirements mask */
  149. #define DRIVER_USE_AGP     0x1
  150. #define DRIVER_REQUIRE_AGP 0x2
  151. #define DRIVER_USE_MTRR    0x4
  152. #define DRIVER_PCI_DMA     0x8
  153. #define DRIVER_SG          0x10
  154. #define DRIVER_HAVE_DMA    0x20
  155. #define DRIVER_HAVE_IRQ    0x40
  156. #define DRIVER_IRQ_SHARED  0x80
  157. #define DRIVER_IRQ_VBL     0x100
  158. #define DRIVER_DMA_QUEUE   0x200
  159. #define DRIVER_FB_DMA      0x400
  160. #define DRIVER_IRQ_VBL2    0x800
  161. #define DRIVER_GEM         0x1000
  162. #define DRIVER_MODESET     0x2000
  163. #define DRIVER_PRIME       0x4000
  164.  
  165. #define DRIVER_BUS_PCI 0x1
  166. #define DRIVER_BUS_PLATFORM 0x2
  167. #define DRIVER_BUS_USB 0x3
  168.  
  169. /***********************************************************************/
  170. /** \name Begin the DRM... */
  171. /*@{*/
  172.  
  173. #define DRM_DEBUG_CODE 2          /**< Include debugging code if > 1, then
  174.                                      also include looping detection. */
  175.  
  176. #define DRM_MAGIC_HASH_ORDER  4  /**< Size of key hash table. Must be power of 2. */
  177. #define DRM_KERNEL_CONTEXT    0  /**< Change drm_resctx if changed */
  178. #define DRM_RESERVED_CONTEXTS 1  /**< Change drm_resctx if changed */
  179. #define DRM_LOOPING_LIMIT     5000000
  180. #define DRM_TIME_SLICE        (HZ/20)  /**< Time slice for GLXContexts */
  181. #define DRM_LOCK_SLICE        1 /**< Time slice for lock, in jiffies */
  182.  
  183. #define DRM_FLAG_DEBUG    0x01
  184.  
  185. #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
  186. #define DRM_MAP_HASH_OFFSET 0x10000000
  187.  
  188. /*@}*/
  189.  
  190. /***********************************************************************/
  191. /** \name Macros to make printk easier */
  192. /*@{*/
  193.  
  194. /**
  195.  * Error output.
  196.  *
  197.  * \param fmt printf() like format string.
  198.  * \param arg arguments
  199.  */
  200. #define DRM_ERROR(fmt, ...)                             \
  201.         drm_err(__func__, fmt, ##__VA_ARGS__)
  202.  
  203. #define DRM_INFO(fmt, ...)                              \
  204.         printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
  205.  
  206. /**
  207.  * Debug output.
  208.  *
  209.  * \param fmt printf() like format string.
  210.  * \param arg arguments
  211.  */
  212. #if DRM_DEBUG_CODE
  213. #define DRM_DEBUG(fmt, ...)                                 \
  214.     do {                                                    \
  215.     printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__);  \
  216.         } while (0)
  217.  
  218. #define DRM_DEBUG_DRIVER(fmt, ...)                          \
  219.     do {                                                    \
  220.     printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__);  \
  221.         } while (0)
  222. #define DRM_DEBUG_KMS(fmt, ...)              \
  223.         do {                                                            \
  224.     printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__);  \
  225.         } while (0)
  226. #define DRM_DEBUG_PRIME(fmt, ...)                    \
  227.         do {                                                            \
  228.     printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__);  \
  229.         } while (0)
  230. #define DRM_LOG(fmt, ...)                        \
  231.         do {                                                            \
  232.     printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__);  \
  233.         } while (0)
  234. #define DRM_LOG_KMS(fmt, ...)                    \
  235.         do {                                                            \
  236.     printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__);  \
  237.         } while (0)
  238. #define DRM_LOG_MODE(fmt, ...)                   \
  239.         do {                                                            \
  240.     printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__);  \
  241.         } while (0)
  242. #define DRM_LOG_DRIVER(fmt, ...)                 \
  243.         do {                                                            \
  244.     printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__);  \
  245.         } while (0)
  246. #else
  247. #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
  248. #define DRM_DEBUG_KMS(fmt, args...)     do { } while (0)
  249. #define DRM_DEBUG_PRIME(fmt, args...)   do { } while (0)
  250. #define DRM_DEBUG(fmt, arg...)           do { } while (0)
  251. #define DRM_LOG(fmt, arg...)            do { } while (0)
  252. #define DRM_LOG_KMS(fmt, args...) do { } while (0)
  253. #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
  254. #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
  255.  
  256. #endif
  257.  
  258. /*@}*/
  259.  
  260. /***********************************************************************/
  261. /** \name Internal types and structures */
  262. /*@{*/
  263.  
  264. #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
  265.  
  266. #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
  267. #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
  268.  
  269. #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
  270.  
  271. /**
  272.  * Test that the hardware lock is held by the caller, returning otherwise.
  273.  *
  274.  * \param dev DRM device.
  275.  * \param filp file pointer of the caller.
  276.  */
  277. #define LOCK_TEST_WITH_RETURN( dev, _file_priv )                                \
  278. do {                                                                            \
  279.         if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) ||       \
  280.             _file_priv->master->lock.file_priv != _file_priv)   {               \
  281.                 DRM_ERROR( "%s called without lock held, held  %d owner %p %p\n",\
  282.                            __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
  283.                            _file_priv->master->lock.file_priv, _file_priv);     \
  284.                 return -EINVAL;                                                 \
  285.         }                                                                       \
  286. } while (0)
  287.  
  288. #if 0
  289. /**
  290.  * Ioctl function type.
  291.  *
  292.  * \param inode device inode.
  293.  * \param file_priv DRM file private pointer.
  294.  * \param cmd command.
  295.  * \param arg argument.
  296.  */
  297. typedef int drm_ioctl_t(struct drm_device *dev, void *data,
  298.                         struct drm_file *file_priv);
  299.  
  300. typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
  301.                                unsigned long arg);
  302.  
  303. #define DRM_IOCTL_NR(n)                _IOC_NR(n)
  304. #define DRM_MAJOR       226
  305.  
  306. #define DRM_AUTH        0x1
  307. #define DRM_MASTER      0x2
  308. #define DRM_ROOT_ONLY   0x4
  309. #define DRM_CONTROL_ALLOW 0x8
  310. #define DRM_UNLOCKED    0x10
  311.  
  312. struct drm_ioctl_desc {
  313.         unsigned int cmd;
  314.         int flags;
  315.         drm_ioctl_t *func;
  316.         unsigned int cmd_drv;
  317. };
  318.  
  319. /**
  320.  * Creates a driver or general drm_ioctl_desc array entry for the given
  321.  * ioctl, for use by drm_ioctl().
  322.  */
  323.  
  324. #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags)                 \
  325.         [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
  326.  
  327. struct drm_magic_entry {
  328.         struct list_head head;
  329.         struct drm_hash_item hash_item;
  330.         struct drm_file *priv;
  331. };
  332.  
  333. struct drm_vma_entry {
  334.         struct list_head head;
  335.         struct vm_area_struct *vma;
  336.         pid_t pid;
  337. };
  338.  
  339. /**
  340.  * DMA buffer.
  341.  */
  342. struct drm_buf {
  343.         int idx;                       /**< Index into master buflist */
  344.         int total;                     /**< Buffer size */
  345.         int order;                     /**< log-base-2(total) */
  346.         int used;                      /**< Amount of buffer in use (for DMA) */
  347.         unsigned long offset;          /**< Byte offset (used internally) */
  348.         void *address;                 /**< Address of buffer */
  349.         unsigned long bus_address;     /**< Bus address of buffer */
  350.         struct drm_buf *next;          /**< Kernel-only: used for free list */
  351.         __volatile__ int waiting;      /**< On kernel DMA queue */
  352.         __volatile__ int pending;      /**< On hardware DMA queue */
  353.         struct drm_file *file_priv;    /**< Private of holding file descr */
  354.         int context;                   /**< Kernel queue for this buffer */
  355.         int while_locked;              /**< Dispatch this buffer while locked */
  356.         enum {
  357.                 DRM_LIST_NONE = 0,
  358.                 DRM_LIST_FREE = 1,
  359.                 DRM_LIST_WAIT = 2,
  360.                 DRM_LIST_PEND = 3,
  361.                 DRM_LIST_PRIO = 4,
  362.                 DRM_LIST_RECLAIM = 5
  363.         } list;                        /**< Which list we're on */
  364.  
  365.         int dev_priv_size;               /**< Size of buffer private storage */
  366.         void *dev_private;               /**< Per-buffer private storage */
  367. };
  368.  
  369. /** bufs is one longer than it has to be */
  370. struct drm_waitlist {
  371.         int count;                      /**< Number of possible buffers */
  372.         struct drm_buf **bufs;          /**< List of pointers to buffers */
  373.         struct drm_buf **rp;                    /**< Read pointer */
  374.         struct drm_buf **wp;                    /**< Write pointer */
  375.         struct drm_buf **end;           /**< End pointer */
  376.         spinlock_t read_lock;
  377.         spinlock_t write_lock;
  378. };
  379.  
  380. struct drm_freelist {
  381.         int initialized;               /**< Freelist in use */
  382.         atomic_t count;                /**< Number of free buffers */
  383.         struct drm_buf *next;          /**< End pointer */
  384.  
  385.         wait_queue_head_t waiting;     /**< Processes waiting on free bufs */
  386.         int low_mark;                  /**< Low water mark */
  387.         int high_mark;                 /**< High water mark */
  388.         atomic_t wfh;                  /**< If waiting for high mark */
  389.         spinlock_t lock;
  390. };
  391. #endif
  392.  
  393. typedef struct drm_dma_handle {
  394.         dma_addr_t busaddr;
  395.         void *vaddr;
  396.         size_t size;
  397. } drm_dma_handle_t;
  398.  
  399. #if 0
  400. /**
  401.  * Buffer entry.  There is one of this for each buffer size order.
  402.  */
  403. struct drm_buf_entry {
  404.         int buf_size;                   /**< size */
  405.         int buf_count;                  /**< number of buffers */
  406.         struct drm_buf *buflist;                /**< buffer list */
  407.         int seg_count;
  408.         int page_order;
  409.         struct drm_dma_handle **seglist;
  410.  
  411.         struct drm_freelist freelist;
  412. };
  413.  
  414. /* Event queued up for userspace to read */
  415. struct drm_pending_event {
  416.         struct drm_event *event;
  417.         struct list_head link;
  418.         struct drm_file *file_priv;
  419.         pid_t pid; /* pid of requester, no guarantee it's valid by the time
  420.                       we deliver the event, for tracing only */
  421.         void (*destroy)(struct drm_pending_event *event);
  422. };
  423.  
  424. /* initial implementaton using a linked list - todo hashtab */
  425. struct drm_prime_file_private {
  426.         struct list_head head;
  427.         struct mutex lock;
  428. };
  429.  
  430. /** File private data */
  431. struct drm_file {
  432.         int authenticated;
  433.         struct pid *pid;
  434.         kuid_t uid;
  435.         drm_magic_t magic;
  436.         unsigned long ioctl_count;
  437.         struct list_head lhead;
  438.         struct drm_minor *minor;
  439.         unsigned long lock_count;
  440.  
  441.         /** Mapping of mm object handles to object pointers. */
  442.         struct idr object_idr;
  443.         /** Lock for synchronization of access to object_idr. */
  444.         spinlock_t table_lock;
  445.  
  446.         struct file *filp;
  447.         void *driver_priv;
  448.  
  449.         int is_master; /* this file private is a master for a minor */
  450.         struct drm_master *master; /* master this node is currently associated with
  451.                                       N.B. not always minor->master */
  452.         struct list_head fbs;
  453.  
  454.         wait_queue_head_t event_wait;
  455.         struct list_head event_list;
  456.         int event_space;
  457.  
  458.         struct drm_prime_file_private prime;
  459. };
  460.  
  461. /** Wait queue */
  462. struct drm_queue {
  463.         atomic_t use_count;             /**< Outstanding uses (+1) */
  464.         atomic_t finalization;          /**< Finalization in progress */
  465.         atomic_t block_count;           /**< Count of processes waiting */
  466.         atomic_t block_read;            /**< Queue blocked for reads */
  467.         wait_queue_head_t read_queue;   /**< Processes waiting on block_read */
  468.         atomic_t block_write;           /**< Queue blocked for writes */
  469.         wait_queue_head_t write_queue;  /**< Processes waiting on block_write */
  470.         atomic_t total_queued;          /**< Total queued statistic */
  471.         atomic_t total_flushed;         /**< Total flushes statistic */
  472.         atomic_t total_locks;           /**< Total locks statistics */
  473.         enum drm_ctx_flags flags;       /**< Context preserving and 2D-only */
  474.         struct drm_waitlist waitlist;   /**< Pending buffers */
  475.         wait_queue_head_t flush_queue;  /**< Processes waiting until flush */
  476. };
  477.  
  478. /**
  479.  * Lock data.
  480.  */
  481. struct drm_lock_data {
  482.         struct drm_hw_lock *hw_lock;    /**< Hardware lock */
  483.         /** Private of lock holder's file (NULL=kernel) */
  484.         struct drm_file *file_priv;
  485.         wait_queue_head_t lock_queue;   /**< Queue of blocked processes */
  486.         unsigned long lock_time;        /**< Time of last lock in jiffies */
  487.         spinlock_t spinlock;
  488.         uint32_t kernel_waiters;
  489.         uint32_t user_waiters;
  490.         int idle_has_lock;
  491. };
  492.  
  493. /**
  494.  * DMA data.
  495.  */
  496. struct drm_device_dma {
  497.  
  498.         struct drm_buf_entry bufs[DRM_MAX_ORDER + 1];   /**< buffers, grouped by their size order */
  499.         int buf_count;                  /**< total number of buffers */
  500.         struct drm_buf **buflist;               /**< Vector of pointers into drm_device_dma::bufs */
  501.         int seg_count;
  502.         int page_count;                 /**< number of pages */
  503.         unsigned long *pagelist;        /**< page list */
  504.         unsigned long byte_count;
  505.         enum {
  506.                 _DRM_DMA_USE_AGP = 0x01,
  507.                 _DRM_DMA_USE_SG = 0x02,
  508.                 _DRM_DMA_USE_FB = 0x04,
  509.                 _DRM_DMA_USE_PCI_RO = 0x08
  510.         } flags;
  511.  
  512. };
  513.  
  514. /**
  515.  * AGP memory entry.  Stored as a doubly linked list.
  516.  */
  517. struct drm_agp_mem {
  518.         unsigned long handle;           /**< handle */
  519.         DRM_AGP_MEM *memory;
  520.         unsigned long bound;            /**< address */
  521.         int pages;
  522.         struct list_head head;
  523. };
  524.  
  525. /**
  526.  * AGP data.
  527.  *
  528.  * \sa drm_agp_init() and drm_device::agp.
  529.  */
  530. struct drm_agp_head {
  531.         DRM_AGP_KERN agp_info;          /**< AGP device information */
  532.         struct list_head memory;
  533.         unsigned long mode;             /**< AGP mode */
  534.         struct agp_bridge_data *bridge;
  535.         int enabled;                    /**< whether the AGP bus as been enabled */
  536.         int acquired;                   /**< whether the AGP device has been acquired */
  537.         unsigned long base;
  538.         int agp_mtrr;
  539.         int cant_use_aperture;
  540.         unsigned long page_mask;
  541. };
  542.  
  543. /**
  544.  * Scatter-gather memory.
  545.  */
  546. struct drm_sg_mem {
  547.         unsigned long handle;
  548.         void *virtual;
  549.         int pages;
  550.         struct page **pagelist;
  551.         dma_addr_t *busaddr;
  552. };
  553.  
  554. struct drm_sigdata {
  555.         int context;
  556.         struct drm_hw_lock *lock;
  557. };
  558.  
  559. #endif
  560.  
  561.  
  562. /**
  563.  * Kernel side of a mapping
  564.  */
  565. struct drm_local_map {
  566.         resource_size_t offset;  /**< Requested physical address (0 for SAREA)*/
  567.         unsigned long size;      /**< Requested physical size (bytes) */
  568.         enum drm_map_type type;  /**< Type of memory to map */
  569.         enum drm_map_flags flags;        /**< Flags */
  570.         void *handle;            /**< User-space: "Handle" to pass to mmap() */
  571.                                  /**< Kernel-space: kernel-virtual address */
  572.         int mtrr;                /**< MTRR slot used */
  573. };
  574.  
  575. typedef struct drm_local_map drm_local_map_t;
  576.  
  577. #if 0
  578. /**
  579.  * Mappings list
  580.  */
  581. struct drm_map_list {
  582.         struct list_head head;          /**< list head */
  583.         struct drm_hash_item hash;
  584.         struct drm_local_map *map;      /**< mapping */
  585.         uint64_t user_token;
  586.         struct drm_master *master;
  587.         struct drm_mm_node *file_offset_node;   /**< fake offset */
  588. };
  589.  
  590. /**
  591.  * Context handle list
  592.  */
  593. struct drm_ctx_list {
  594.         struct list_head head;          /**< list head */
  595.         drm_context_t handle;           /**< context handle */
  596.         struct drm_file *tag;           /**< associated fd private data */
  597. };
  598.  
  599. /* location of GART table */
  600. #define DRM_ATI_GART_MAIN 1
  601. #define DRM_ATI_GART_FB   2
  602.  
  603. #define DRM_ATI_GART_PCI 1
  604. #define DRM_ATI_GART_PCIE 2
  605. #define DRM_ATI_GART_IGP 3
  606.  
  607. struct drm_ati_pcigart_info {
  608.         int gart_table_location;
  609.         int gart_reg_if;
  610.         void *addr;
  611.         dma_addr_t bus_addr;
  612.         dma_addr_t table_mask;
  613.         struct drm_dma_handle *table_handle;
  614.         struct drm_local_map mapping;
  615.         int table_size;
  616. };
  617.  
  618. /**
  619.  * GEM specific mm private for tracking GEM objects
  620.  */
  621. struct drm_gem_mm {
  622.         struct drm_mm offset_manager;   /**< Offset mgmt for buffer objects */
  623.         struct drm_open_hash offset_hash; /**< User token hash table for maps */
  624. };
  625.  
  626. #endif
  627.  
  628. /**
  629.  * This structure defines the drm_mm memory object, which will be used by the
  630.  * DRM for its buffer objects.
  631.  */
  632. struct drm_gem_object {
  633.         /** Reference count of this object */
  634.         struct kref refcount;
  635.  
  636.         /** Handle count of this object. Each handle also holds a reference */
  637.         atomic_t handle_count; /* number of handles on this object */
  638.  
  639.         /** Related drm device */
  640.         struct drm_device *dev;
  641.  
  642.         /** File representing the shmem storage */
  643.         struct file *filp;
  644.  
  645.         /* Mapping info for this object */
  646.  
  647.         /**
  648.          * Size of the object, in bytes.  Immutable over the object's
  649.          * lifetime.
  650.          */
  651.         size_t size;
  652.  
  653.         /**
  654.          * Global name for this object, starts at 1. 0 means unnamed.
  655.          * Access is covered by the object_name_lock in the related drm_device
  656.          */
  657.         int name;
  658.  
  659.         /**
  660.          * Memory domains. These monitor which caches contain read/write data
  661.          * related to the object. When transitioning from one set of domains
  662.          * to another, the driver is called to ensure that caches are suitably
  663.          * flushed and invalidated
  664.          */
  665.         uint32_t read_domains;
  666.         uint32_t write_domain;
  667.  
  668.         /**
  669.          * While validating an exec operation, the
  670.          * new read/write domain values are computed here.
  671.          * They will be transferred to the above values
  672.          * at the point that any cache flushing occurs
  673.          */
  674.         uint32_t pending_read_domains;
  675.         uint32_t pending_write_domain;
  676.  
  677.         void *driver_private;
  678. };
  679.  
  680. #include <drm/drm_crtc.h>
  681.  
  682. /* per-master structure */
  683. struct drm_master {
  684.  
  685.         struct kref refcount; /* refcount for this master */
  686.  
  687.         struct list_head head; /**< each minor contains a list of masters */
  688.         struct drm_minor *minor; /**< link back to minor we are a master for */
  689.  
  690.         char *unique;                   /**< Unique identifier: e.g., busid */
  691.         int unique_len;                 /**< Length of unique field */
  692.         int unique_size;                /**< amount allocated */
  693.  
  694.         int blocked;                    /**< Blocked due to VC switch? */
  695.  
  696.         /** \name Authentication */
  697.         /*@{ */
  698. //   struct drm_open_hash magiclist;
  699. //   struct list_head magicfree;
  700.         /*@} */
  701.  
  702. //   struct drm_lock_data lock;  /**< Information on hardware lock */
  703.  
  704.         void *driver_priv; /**< Private structure for driver to use */
  705. };
  706.  
  707. #if 0
  708.  
  709. /* Size of ringbuffer for vblank timestamps. Just double-buffer
  710.  * in initial implementation.
  711.  */
  712. #define DRM_VBLANKTIME_RBSIZE 2
  713.  
  714. /* Flags and return codes for get_vblank_timestamp() driver function. */
  715. #define DRM_CALLED_FROM_VBLIRQ 1
  716. #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
  717. #define DRM_VBLANKTIME_INVBL             (1 << 1)
  718.  
  719. /* get_scanout_position() return flags */
  720. #define DRM_SCANOUTPOS_VALID        (1 << 0)
  721. #define DRM_SCANOUTPOS_INVBL        (1 << 1)
  722. #define DRM_SCANOUTPOS_ACCURATE     (1 << 2)
  723.  
  724. struct drm_bus {
  725.         int bus_type;
  726.         int (*get_irq)(struct drm_device *dev);
  727.         const char *(*get_name)(struct drm_device *dev);
  728.         int (*set_busid)(struct drm_device *dev, struct drm_master *master);
  729.         int (*set_unique)(struct drm_device *dev, struct drm_master *master,
  730.                           struct drm_unique *unique);
  731.         int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
  732.         /* hooks that are for PCI */
  733.         int (*agp_init)(struct drm_device *dev);
  734.  
  735. };
  736.  
  737. /**
  738.  * DRM driver structure. This structure represent the common code for
  739.  * a family of cards. There will one drm_device for each card present
  740.  * in this family
  741.  */
  742. struct drm_driver {
  743.         int (*load) (struct drm_device *, unsigned long flags);
  744.         int (*firstopen) (struct drm_device *);
  745.         int (*open) (struct drm_device *, struct drm_file *);
  746.         void (*preclose) (struct drm_device *, struct drm_file *file_priv);
  747.         void (*postclose) (struct drm_device *, struct drm_file *);
  748.         void (*lastclose) (struct drm_device *);
  749.         int (*unload) (struct drm_device *);
  750.         int (*suspend) (struct drm_device *, pm_message_t state);
  751.         int (*resume) (struct drm_device *);
  752.         int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
  753.         int (*dma_quiescent) (struct drm_device *);
  754.         int (*context_dtor) (struct drm_device *dev, int context);
  755.  
  756.         /**
  757.          * get_vblank_counter - get raw hardware vblank counter
  758.          * @dev: DRM device
  759.          * @crtc: counter to fetch
  760.          *
  761.          * Driver callback for fetching a raw hardware vblank counter for @crtc.
  762.          * If a device doesn't have a hardware counter, the driver can simply
  763.          * return the value of drm_vblank_count. The DRM core will account for
  764.          * missed vblank events while interrupts where disabled based on system
  765.          * timestamps.
  766.          *
  767.          * Wraparound handling and loss of events due to modesetting is dealt
  768.          * with in the DRM core code.
  769.          *
  770.          * RETURNS
  771.          * Raw vblank counter value.
  772.          */
  773.         u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
  774.  
  775.         /**
  776.          * enable_vblank - enable vblank interrupt events
  777.          * @dev: DRM device
  778.          * @crtc: which irq to enable
  779.          *
  780.          * Enable vblank interrupts for @crtc.  If the device doesn't have
  781.          * a hardware vblank counter, this routine should be a no-op, since
  782.          * interrupts will have to stay on to keep the count accurate.
  783.          *
  784.          * RETURNS
  785.          * Zero on success, appropriate errno if the given @crtc's vblank
  786.          * interrupt cannot be enabled.
  787.          */
  788.         int (*enable_vblank) (struct drm_device *dev, int crtc);
  789.  
  790.         /**
  791.          * disable_vblank - disable vblank interrupt events
  792.          * @dev: DRM device
  793.          * @crtc: which irq to enable
  794.          *
  795.          * Disable vblank interrupts for @crtc.  If the device doesn't have
  796.          * a hardware vblank counter, this routine should be a no-op, since
  797.          * interrupts will have to stay on to keep the count accurate.
  798.          */
  799.         void (*disable_vblank) (struct drm_device *dev, int crtc);
  800.  
  801.         /**
  802.          * Called by \c drm_device_is_agp.  Typically used to determine if a
  803.          * card is really attached to AGP or not.
  804.          *
  805.          * \param dev  DRM device handle
  806.          *
  807.          * \returns
  808.          * One of three values is returned depending on whether or not the
  809.          * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
  810.          * (return of 1), or may or may not be AGP (return of 2).
  811.          */
  812.         int (*device_is_agp) (struct drm_device *dev);
  813.  
  814.         /**
  815.          * Called by vblank timestamping code.
  816.          *
  817.          * Return the current display scanout position from a crtc.
  818.          *
  819.          * \param dev  DRM device.
  820.          * \param crtc Id of the crtc to query.
  821.          * \param *vpos Target location for current vertical scanout position.
  822.          * \param *hpos Target location for current horizontal scanout position.
  823.          *
  824.          * Returns vpos as a positive number while in active scanout area.
  825.          * Returns vpos as a negative number inside vblank, counting the number
  826.          * of scanlines to go until end of vblank, e.g., -1 means "one scanline
  827.          * until start of active scanout / end of vblank."
  828.          *
  829.          * \return Flags, or'ed together as follows:
  830.          *
  831.          * DRM_SCANOUTPOS_VALID = Query successful.
  832.          * DRM_SCANOUTPOS_INVBL = Inside vblank.
  833.          * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
  834.          * this flag means that returned position may be offset by a constant
  835.          * but unknown small number of scanlines wrt. real scanout position.
  836.          *
  837.          */
  838.         int (*get_scanout_position) (struct drm_device *dev, int crtc,
  839.                                      int *vpos, int *hpos);
  840.  
  841.         /**
  842.          * Called by \c drm_get_last_vbltimestamp. Should return a precise
  843.          * timestamp when the most recent VBLANK interval ended or will end.
  844.          *
  845.          * Specifically, the timestamp in @vblank_time should correspond as
  846.          * closely as possible to the time when the first video scanline of
  847.          * the video frame after the end of VBLANK will start scanning out,
  848.          * the time immediately after end of the VBLANK interval. If the
  849.          * @crtc is currently inside VBLANK, this will be a time in the future.
  850.          * If the @crtc is currently scanning out a frame, this will be the
  851.          * past start time of the current scanout. This is meant to adhere
  852.          * to the OpenML OML_sync_control extension specification.
  853.          *
  854.          * \param dev dev DRM device handle.
  855.          * \param crtc crtc for which timestamp should be returned.
  856.          * \param *max_error Maximum allowable timestamp error in nanoseconds.
  857.          *                   Implementation should strive to provide timestamp
  858.          *                   with an error of at most *max_error nanoseconds.
  859.          *                   Returns true upper bound on error for timestamp.
  860.          * \param *vblank_time Target location for returned vblank timestamp.
  861.          * \param flags 0 = Defaults, no special treatment needed.
  862.          * \param       DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
  863.          *              irq handler. Some drivers need to apply some workarounds
  864.          *              for gpu-specific vblank irq quirks if flag is set.
  865.          *
  866.          * \returns
  867.          * Zero if timestamping isn't supported in current display mode or a
  868.          * negative number on failure. A positive status code on success,
  869.          * which describes how the vblank_time timestamp was computed.
  870.          */
  871.         int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
  872.                                      int *max_error,
  873.                                      struct timeval *vblank_time,
  874.                                      unsigned flags);
  875.  
  876.         /* these have to be filled in */
  877.  
  878.         irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
  879.         void (*irq_preinstall) (struct drm_device *dev);
  880.         int (*irq_postinstall) (struct drm_device *dev);
  881.         void (*irq_uninstall) (struct drm_device *dev);
  882.         void (*set_version) (struct drm_device *dev,
  883.                              struct drm_set_version *sv);
  884.  
  885.         /* Master routines */
  886.         int (*master_create)(struct drm_device *dev, struct drm_master *master);
  887.         void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
  888.         /**
  889.          * master_set is called whenever the minor master is set.
  890.          * master_drop is called whenever the minor master is dropped.
  891.          */
  892.  
  893.         int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
  894.                           bool from_open);
  895.         void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
  896.                             bool from_release);
  897.  
  898.         int (*debugfs_init)(struct drm_minor *minor);
  899.         void (*debugfs_cleanup)(struct drm_minor *minor);
  900.  
  901.         /**
  902.          * Driver-specific constructor for drm_gem_objects, to set up
  903.          * obj->driver_private.
  904.          *
  905.          * Returns 0 on success.
  906.          */
  907.         int (*gem_init_object) (struct drm_gem_object *obj);
  908.         void (*gem_free_object) (struct drm_gem_object *obj);
  909.         int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
  910.         void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
  911.  
  912.         /* prime: */
  913.         /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
  914.         int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
  915.                                 uint32_t handle, uint32_t flags, int *prime_fd);
  916.         /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
  917.         int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
  918.                                 int prime_fd, uint32_t *handle);
  919.         /* export GEM -> dmabuf */
  920.         struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
  921.                                 struct drm_gem_object *obj, int flags);
  922.         /* import dmabuf -> GEM */
  923.         struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
  924.                                 struct dma_buf *dma_buf);
  925.  
  926.         /* vga arb irq handler */
  927.         void (*vgaarb_irq)(struct drm_device *dev, bool state);
  928.  
  929.         /* dumb alloc support */
  930.         int (*dumb_create)(struct drm_file *file_priv,
  931.                            struct drm_device *dev,
  932.                            struct drm_mode_create_dumb *args);
  933.         int (*dumb_map_offset)(struct drm_file *file_priv,
  934.                                struct drm_device *dev, uint32_t handle,
  935.                                uint64_t *offset);
  936.         int (*dumb_destroy)(struct drm_file *file_priv,
  937.                             struct drm_device *dev,
  938.                             uint32_t handle);
  939.  
  940.         /* Driver private ops for this object */
  941.         const struct vm_operations_struct *gem_vm_ops;
  942.  
  943.         int major;
  944.         int minor;
  945.         int patchlevel;
  946.         char *name;
  947.         char *desc;
  948.         char *date;
  949.  
  950.         u32 driver_features;
  951.         int dev_priv_size;
  952.         struct drm_ioctl_desc *ioctls;
  953.         int num_ioctls;
  954.         const struct file_operations *fops;
  955.         union {
  956.                 struct pci_driver *pci;
  957.                 struct platform_device *platform_device;
  958.                 struct usb_driver *usb;
  959.         } kdriver;
  960.         struct drm_bus *bus;
  961.  
  962.         /* List of devices hanging off this driver */
  963.         struct list_head device_list;
  964. };
  965.  
  966. #endif
  967.  
  968. #define DRM_MINOR_UNASSIGNED 0
  969. #define DRM_MINOR_LEGACY 1
  970. #define DRM_MINOR_CONTROL 2
  971. #define DRM_MINOR_RENDER 3
  972.  
  973.  
  974. /**
  975.  * debugfs node list. This structure represents a debugfs file to
  976.  * be created by the drm core
  977.  */
  978. struct drm_debugfs_list {
  979.         const char *name; /** file name */
  980. //   int (*show)(struct seq_file*, void*); /** show callback */
  981.         u32 driver_features; /**< Required driver features for this entry */
  982. };
  983.  
  984. /**
  985.  * debugfs node structure. This structure represents a debugfs file.
  986.  */
  987. struct drm_debugfs_node {
  988.         struct list_head list;
  989.         struct drm_minor *minor;
  990.         struct drm_debugfs_list *debugfs_ent;
  991.         struct dentry *dent;
  992. };
  993.  
  994. /**
  995.  * Info file list entry. This structure represents a debugfs or proc file to
  996.  * be created by the drm core
  997.  */
  998. struct drm_info_list {
  999.         const char *name; /** file name */
  1000. //   int (*show)(struct seq_file*, void*); /** show callback */
  1001.         u32 driver_features; /**< Required driver features for this entry */
  1002.         void *data;
  1003. };
  1004.  
  1005. /**
  1006.  * debugfs node structure. This structure represents a debugfs file.
  1007.  */
  1008. struct drm_info_node {
  1009.         struct list_head list;
  1010.         struct drm_minor *minor;
  1011.         struct drm_info_list *info_ent;
  1012.         struct dentry *dent;
  1013. };
  1014.  
  1015. /**
  1016.  * DRM minor structure. This structure represents a drm minor number.
  1017.  */
  1018. struct drm_minor {
  1019.         int index;                      /**< Minor device number */
  1020.         int type;                       /**< Control or render */
  1021. //   dev_t device;           /**< Device number for mknod */
  1022. //   struct device kdev;     /**< Linux device */
  1023.         struct drm_device *dev;
  1024.  
  1025. //   struct proc_dir_entry *proc_root;  /**< proc directory entry */
  1026. //   struct drm_info_node proc_nodes;
  1027. //   struct dentry *debugfs_root;
  1028. //   struct drm_info_node debugfs_nodes;
  1029.  
  1030.     struct drm_master *master; /* currently active master for this node */
  1031. //   struct list_head master_list;
  1032. //   struct drm_mode_group mode_group;
  1033. };
  1034.  
  1035. /* mode specified on the command line */
  1036. struct drm_cmdline_mode {
  1037.         bool specified;
  1038.         bool refresh_specified;
  1039.         bool bpp_specified;
  1040.         int xres, yres;
  1041.         int bpp;
  1042.         int refresh;
  1043.         bool rb;
  1044.         bool interlace;
  1045.         bool cvt;
  1046.         bool margins;
  1047.         enum drm_connector_force force;
  1048. };
  1049.  
  1050.  
  1051.  
  1052. /**
  1053.  * DRM device structure. This structure represent a complete card that
  1054.  * may contain multiple heads.
  1055.  */
  1056. struct drm_device {
  1057.         struct list_head driver_item;   /**< list of devices per driver */
  1058.         char *devname;                  /**< For /proc/interrupts */
  1059.         int if_version;                 /**< Highest interface version set */
  1060.  
  1061.         /** \name Locks */
  1062.         /*@{ */
  1063.     spinlock_t count_lock;      /**< For inuse, drm_device::open_count, drm_device::buf_use */
  1064.         struct mutex struct_mutex;      /**< For others */
  1065.         /*@} */
  1066.  
  1067.         /** \name Usage Counters */
  1068.         /*@{ */
  1069.         int open_count;                 /**< Outstanding files open */
  1070.    atomic_t ioctl_count;       /**< Outstanding IOCTLs pending */
  1071.    atomic_t vma_count;     /**< Outstanding vma areas open */
  1072.         int buf_use;                    /**< Buffers in use -- cannot alloc */
  1073.    atomic_t buf_alloc;     /**< Buffer allocation in progress */
  1074.         /*@} */
  1075.  
  1076.         /** \name Performance counters */
  1077.         /*@{ */
  1078.         unsigned long counters;
  1079. //   enum drm_stat_type types[15];
  1080.    atomic_t counts[15];
  1081.         /*@} */
  1082.  
  1083.         struct list_head filelist;
  1084.  
  1085.         /** \name Memory management */
  1086.         /*@{ */
  1087.         struct list_head maplist;       /**< Linked list of regions */
  1088.         int map_count;                  /**< Number of mappable regions */
  1089. //   struct drm_open_hash map_hash;  /**< User token hash table for maps */
  1090.  
  1091.         /** \name Context handle management */
  1092.         /*@{ */
  1093.         struct list_head ctxlist;       /**< Linked list of context handles */
  1094.         int ctx_count;                  /**< Number of context handles */
  1095.         struct mutex ctxlist_mutex;     /**< For ctxlist */
  1096.  
  1097.         struct idr ctx_idr;
  1098.  
  1099.         struct list_head vmalist;       /**< List of vmas (for debugging) */
  1100.  
  1101.         /*@} */
  1102.  
  1103.         /** \name DMA support */
  1104.         /*@{ */
  1105. //   struct drm_device_dma *dma;     /**< Optional pointer for DMA support */
  1106.         /*@} */
  1107.  
  1108.         /** \name Context support */
  1109.         /*@{ */
  1110.         int irq_enabled;                /**< True if irq handler is enabled */
  1111.         __volatile__ long context_flag; /**< Context swapping flag */
  1112.         __volatile__ long interrupt_flag; /**< Interruption handler flag */
  1113.         __volatile__ long dma_flag;     /**< DMA dispatch flag */
  1114. //   wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
  1115.         int last_checked;               /**< Last context checked for DMA */
  1116.         int last_context;               /**< Last current context */
  1117.         unsigned long last_switch;      /**< jiffies at last context switch */
  1118.         /*@} */
  1119.  
  1120. //   struct work_struct work;
  1121.         /** \name VBLANK IRQ support */
  1122.         /*@{ */
  1123.  
  1124.         /*
  1125.          * At load time, disabling the vblank interrupt won't be allowed since
  1126.          * old clients may not call the modeset ioctl and therefore misbehave.
  1127.          * Once the modeset ioctl *has* been called though, we can safely
  1128.          * disable them when unused.
  1129.          */
  1130.         int vblank_disable_allowed;
  1131.  
  1132. //   wait_queue_head_t *vbl_queue;   /**< VBLANK wait queue */
  1133.    atomic_t *_vblank_count;        /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
  1134.         struct timeval *_vblank_time;   /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
  1135.         spinlock_t vblank_time_lock;    /**< Protects vblank count and time updates during vblank enable/disable */
  1136.    spinlock_t vbl_lock;
  1137.    atomic_t *vblank_refcount;      /* number of users of vblank interruptsper crtc */
  1138.         u32 *last_vblank;               /* protected by dev->vbl_lock, used */
  1139.                                         /* for wraparound handling */
  1140.         int *vblank_enabled;            /* so we don't call enable more than
  1141.                                            once per disable */
  1142.         int *vblank_inmodeset;          /* Display driver is setting mode */
  1143.         u32 *last_vblank_wait;          /* Last vblank seqno waited per CRTC */
  1144. //   struct timer_list vblank_disable_timer;
  1145.  
  1146.         u32 max_vblank_count;           /**< size of vblank counter register */
  1147.  
  1148.         /**
  1149.          * List of events
  1150.          */
  1151.         struct list_head vblank_event_list;
  1152.         spinlock_t event_lock;
  1153.  
  1154.         /*@} */
  1155. //   cycles_t ctx_start;
  1156. //   cycles_t lck_start;
  1157.  
  1158. //   struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
  1159. //   wait_queue_head_t buf_readers;  /**< Processes waiting to read */
  1160. //   wait_queue_head_t buf_writers;  /**< Processes waiting to ctx switch */
  1161.  
  1162. //   struct drm_agp_head *agp;   /**< AGP data */
  1163.  
  1164.         struct device *dev;             /**< Device structure */
  1165.         struct pci_dev *pdev;           /**< PCI device structure */
  1166.         int pci_vendor;                 /**< PCI vendor id */
  1167.         int pci_device;                 /**< PCI device id */
  1168.         unsigned int num_crtcs;                  /**< Number of CRTCs on this device */
  1169.         void *dev_private;              /**< device private data */
  1170.         void *mm_private;
  1171.     struct address_space *dev_mapping;
  1172. //   struct drm_sigdata sigdata;    /**< For block_all_signals */
  1173. //   sigset_t sigmask;
  1174.  
  1175. //   struct drm_driver *driver;
  1176. //   struct drm_local_map *agp_buffer_map;
  1177. //   unsigned int agp_buffer_token;
  1178. //   struct drm_minor *control;      /**< Control node for card */
  1179.    struct drm_minor *primary;      /**< render type primary screen head */
  1180.  
  1181.         struct drm_mode_config mode_config;     /**< Current mode config */
  1182.  
  1183.         /** \name GEM information */
  1184.         /*@{ */
  1185.    spinlock_t object_name_lock;
  1186.         struct idr object_name_idr;
  1187.         /*@} */
  1188.         int switch_power_state;
  1189.  
  1190.         atomic_t unplugged; /* device has been unplugged or gone away */
  1191. };
  1192.  
  1193. #define DRM_SWITCH_POWER_ON 0
  1194. #define DRM_SWITCH_POWER_OFF 1
  1195. #define DRM_SWITCH_POWER_CHANGING 2
  1196.  
  1197.  
  1198. static inline int drm_dev_to_irq(struct drm_device *dev)
  1199. {
  1200.         return dev->pdev->irq;
  1201. }
  1202.  
  1203. #if 0
  1204.  
  1205. #ifdef __alpha__
  1206. #define drm_get_pci_domain(dev) dev->hose->index
  1207. #else
  1208. #define drm_get_pci_domain(dev) 0
  1209. #endif
  1210.  
  1211. #if __OS_HAS_AGP
  1212. static inline int drm_core_has_AGP(struct drm_device *dev)
  1213. {
  1214.         return drm_core_check_feature(dev, DRIVER_USE_AGP);
  1215. }
  1216. #else
  1217. #define drm_core_has_AGP(dev) (0)
  1218. #endif
  1219.  
  1220. #if __OS_HAS_MTRR
  1221. static inline int drm_core_has_MTRR(struct drm_device *dev)
  1222. {
  1223.         return drm_core_check_feature(dev, DRIVER_USE_MTRR);
  1224. }
  1225.  
  1226. #define DRM_MTRR_WC             MTRR_TYPE_WRCOMB
  1227.  
  1228. static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
  1229.                                unsigned int flags)
  1230. {
  1231.         return mtrr_add(offset, size, flags, 1);
  1232. }
  1233.  
  1234. static inline int drm_mtrr_del(int handle, unsigned long offset,
  1235.                                unsigned long size, unsigned int flags)
  1236. {
  1237.         return mtrr_del(handle, offset, size);
  1238. }
  1239.  
  1240. #else
  1241. #define drm_core_has_MTRR(dev) (0)
  1242.  
  1243. #define DRM_MTRR_WC             0
  1244.  
  1245. static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
  1246.                                unsigned int flags)
  1247. {
  1248.         return 0;
  1249. }
  1250.  
  1251. static inline int drm_mtrr_del(int handle, unsigned long offset,
  1252.                                unsigned long size, unsigned int flags)
  1253. {
  1254.         return 0;
  1255. }
  1256. #endif
  1257.  
  1258. /******************************************************************/
  1259. /** \name Internal function definitions */
  1260. /*@{*/
  1261.  
  1262.                                 /* Driver support (drm_drv.h) */
  1263. extern long drm_ioctl(struct file *filp,
  1264.                      unsigned int cmd, unsigned long arg);
  1265. extern long drm_compat_ioctl(struct file *filp,
  1266.                              unsigned int cmd, unsigned long arg);
  1267. extern int drm_lastclose(struct drm_device *dev);
  1268.  
  1269.                                 /* Device support (drm_fops.h) */
  1270. extern struct mutex drm_global_mutex;
  1271. extern int drm_open(struct inode *inode, struct file *filp);
  1272. extern int drm_stub_open(struct inode *inode, struct file *filp);
  1273. extern int drm_fasync(int fd, struct file *filp, int on);
  1274. extern ssize_t drm_read(struct file *filp, char __user *buffer,
  1275.                         size_t count, loff_t *offset);
  1276. extern int drm_release(struct inode *inode, struct file *filp);
  1277.  
  1278.                                 /* Mapping support (drm_vm.h) */
  1279. extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
  1280. extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
  1281. extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
  1282. extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
  1283. extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
  1284.  
  1285.                                 /* Memory management support (drm_memory.h) */
  1286. #include <drm/drm_memory.h>
  1287. extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
  1288. extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
  1289. extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
  1290.                                        struct page **pages,
  1291.                                        unsigned long num_pages,
  1292.                                        uint32_t gtt_offset,
  1293.                                        uint32_t type);
  1294. extern int drm_unbind_agp(DRM_AGP_MEM * handle);
  1295.  
  1296.                                 /* Misc. IOCTL support (drm_ioctl.h) */
  1297. extern int drm_irq_by_busid(struct drm_device *dev, void *data,
  1298.                             struct drm_file *file_priv);
  1299. extern int drm_getunique(struct drm_device *dev, void *data,
  1300.                          struct drm_file *file_priv);
  1301. extern int drm_setunique(struct drm_device *dev, void *data,
  1302.                          struct drm_file *file_priv);
  1303. extern int drm_getmap(struct drm_device *dev, void *data,
  1304.                       struct drm_file *file_priv);
  1305. extern int drm_getclient(struct drm_device *dev, void *data,
  1306.                          struct drm_file *file_priv);
  1307. extern int drm_getstats(struct drm_device *dev, void *data,
  1308.                         struct drm_file *file_priv);
  1309. extern int drm_getcap(struct drm_device *dev, void *data,
  1310.                       struct drm_file *file_priv);
  1311. extern int drm_setversion(struct drm_device *dev, void *data,
  1312.                           struct drm_file *file_priv);
  1313. extern int drm_noop(struct drm_device *dev, void *data,
  1314.                     struct drm_file *file_priv);
  1315.  
  1316.                                 /* Context IOCTL support (drm_context.h) */
  1317. extern int drm_resctx(struct drm_device *dev, void *data,
  1318.                       struct drm_file *file_priv);
  1319. extern int drm_addctx(struct drm_device *dev, void *data,
  1320.                       struct drm_file *file_priv);
  1321. extern int drm_modctx(struct drm_device *dev, void *data,
  1322.                       struct drm_file *file_priv);
  1323. extern int drm_getctx(struct drm_device *dev, void *data,
  1324.                       struct drm_file *file_priv);
  1325. extern int drm_switchctx(struct drm_device *dev, void *data,
  1326.                          struct drm_file *file_priv);
  1327. extern int drm_newctx(struct drm_device *dev, void *data,
  1328.                       struct drm_file *file_priv);
  1329. extern int drm_rmctx(struct drm_device *dev, void *data,
  1330.                      struct drm_file *file_priv);
  1331.  
  1332. extern int drm_ctxbitmap_init(struct drm_device *dev);
  1333. extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
  1334. extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
  1335.  
  1336. extern int drm_setsareactx(struct drm_device *dev, void *data,
  1337.                            struct drm_file *file_priv);
  1338. extern int drm_getsareactx(struct drm_device *dev, void *data,
  1339.                            struct drm_file *file_priv);
  1340.  
  1341.                                 /* Authentication IOCTL support (drm_auth.h) */
  1342. extern int drm_getmagic(struct drm_device *dev, void *data,
  1343.                         struct drm_file *file_priv);
  1344. extern int drm_authmagic(struct drm_device *dev, void *data,
  1345.                          struct drm_file *file_priv);
  1346. extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
  1347.  
  1348. /* Cache management (drm_cache.c) */
  1349. void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
  1350. void drm_clflush_sg(struct sg_table *st);
  1351. void drm_clflush_virt_range(char *addr, unsigned long length);
  1352.  
  1353.                                 /* Locking IOCTL support (drm_lock.h) */
  1354. extern int drm_lock(struct drm_device *dev, void *data,
  1355.                     struct drm_file *file_priv);
  1356. extern int drm_unlock(struct drm_device *dev, void *data,
  1357.                       struct drm_file *file_priv);
  1358. extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
  1359. extern void drm_idlelock_take(struct drm_lock_data *lock_data);
  1360. extern void drm_idlelock_release(struct drm_lock_data *lock_data);
  1361.  
  1362. /*
  1363.  * These are exported to drivers so that they can implement fencing using
  1364.  * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
  1365.  */
  1366.  
  1367. extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
  1368.  
  1369.                                 /* Buffer management support (drm_bufs.h) */
  1370. extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
  1371. extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
  1372. extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
  1373.                       unsigned int size, enum drm_map_type type,
  1374.                       enum drm_map_flags flags, struct drm_local_map **map_ptr);
  1375. extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
  1376.                             struct drm_file *file_priv);
  1377. extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
  1378. extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
  1379. extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
  1380.                            struct drm_file *file_priv);
  1381. extern int drm_addbufs(struct drm_device *dev, void *data,
  1382.                        struct drm_file *file_priv);
  1383. extern int drm_infobufs(struct drm_device *dev, void *data,
  1384.                         struct drm_file *file_priv);
  1385. extern int drm_markbufs(struct drm_device *dev, void *data,
  1386.                         struct drm_file *file_priv);
  1387. extern int drm_freebufs(struct drm_device *dev, void *data,
  1388.                         struct drm_file *file_priv);
  1389. extern int drm_mapbufs(struct drm_device *dev, void *data,
  1390.                        struct drm_file *file_priv);
  1391. extern int drm_order(unsigned long size);
  1392.  
  1393.                                 /* DMA support (drm_dma.h) */
  1394. extern int drm_dma_setup(struct drm_device *dev);
  1395. extern void drm_dma_takedown(struct drm_device *dev);
  1396. extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
  1397. extern void drm_core_reclaim_buffers(struct drm_device *dev,
  1398.                                      struct drm_file *filp);
  1399.  
  1400.                                 /* IRQ support (drm_irq.h) */
  1401. extern int drm_control(struct drm_device *dev, void *data,
  1402.                        struct drm_file *file_priv);
  1403. extern int drm_irq_install(struct drm_device *dev);
  1404. extern int drm_irq_uninstall(struct drm_device *dev);
  1405.  
  1406. extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
  1407. extern int drm_wait_vblank(struct drm_device *dev, void *data,
  1408.                            struct drm_file *filp);
  1409. extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
  1410. extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
  1411. extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
  1412.                                      struct timeval *vblanktime);
  1413. extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
  1414. extern int drm_vblank_get(struct drm_device *dev, int crtc);
  1415. extern void drm_vblank_put(struct drm_device *dev, int crtc);
  1416. extern void drm_vblank_off(struct drm_device *dev, int crtc);
  1417. extern void drm_vblank_cleanup(struct drm_device *dev);
  1418. extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
  1419.                                      struct timeval *tvblank, unsigned flags);
  1420. extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
  1421.                                                  int crtc, int *max_error,
  1422.                                                  struct timeval *vblank_time,
  1423.                                                  unsigned flags,
  1424.                                                  struct drm_crtc *refcrtc);
  1425. extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
  1426.  
  1427. extern bool
  1428. drm_mode_parse_command_line_for_connector(const char *mode_option,
  1429.                                           struct drm_connector *connector,
  1430.                                           struct drm_cmdline_mode *mode);
  1431.  
  1432. extern struct drm_display_mode *
  1433. drm_mode_create_from_cmdline_mode(struct drm_device *dev,
  1434.                                   struct drm_cmdline_mode *cmd);
  1435.  
  1436. /* Modesetting support */
  1437. extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
  1438. extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
  1439. extern int drm_modeset_ctl(struct drm_device *dev, void *data,
  1440.                            struct drm_file *file_priv);
  1441.  
  1442.                                 /* AGP/GART support (drm_agpsupport.h) */
  1443. extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
  1444. extern int drm_agp_acquire(struct drm_device *dev);
  1445. extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
  1446.                                  struct drm_file *file_priv);
  1447. extern int drm_agp_release(struct drm_device *dev);
  1448. extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
  1449.                                  struct drm_file *file_priv);
  1450. extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
  1451. extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
  1452.                                 struct drm_file *file_priv);
  1453. extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
  1454. extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
  1455.                         struct drm_file *file_priv);
  1456. extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
  1457. extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
  1458.                          struct drm_file *file_priv);
  1459. extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
  1460. extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
  1461.                         struct drm_file *file_priv);
  1462. extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
  1463. extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
  1464.                           struct drm_file *file_priv);
  1465. extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
  1466. extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
  1467.                         struct drm_file *file_priv);
  1468.  
  1469.                                 /* Stub support (drm_stub.h) */
  1470. extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
  1471.                                struct drm_file *file_priv);
  1472. extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
  1473.                                 struct drm_file *file_priv);
  1474. struct drm_master *drm_master_create(struct drm_minor *minor);
  1475. extern struct drm_master *drm_master_get(struct drm_master *master);
  1476. extern void drm_master_put(struct drm_master **master);
  1477.  
  1478. extern void drm_put_dev(struct drm_device *dev);
  1479. extern int drm_put_minor(struct drm_minor **minor);
  1480. extern void drm_unplug_dev(struct drm_device *dev);
  1481. #endif
  1482.  
  1483. extern unsigned int drm_debug;
  1484.  
  1485. #if 0
  1486. extern unsigned int drm_vblank_offdelay;
  1487. extern unsigned int drm_timestamp_precision;
  1488.  
  1489. extern struct class *drm_class;
  1490. extern struct proc_dir_entry *drm_proc_root;
  1491. extern struct dentry *drm_debugfs_root;
  1492.  
  1493. extern struct idr drm_minors_idr;
  1494.  
  1495. extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
  1496.  
  1497.                                 /* Proc support (drm_proc.h) */
  1498. extern int drm_proc_init(struct drm_minor *minor, int minor_id,
  1499.                          struct proc_dir_entry *root);
  1500. extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
  1501.  
  1502.                                 /* Debugfs support */
  1503. #if defined(CONFIG_DEBUG_FS)
  1504. extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
  1505.                             struct dentry *root);
  1506. extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
  1507.                                     struct dentry *root, struct drm_minor *minor);
  1508. extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
  1509.                                     struct drm_minor *minor);
  1510. extern int drm_debugfs_cleanup(struct drm_minor *minor);
  1511. #endif
  1512.  
  1513.                                 /* Info file support */
  1514. extern int drm_name_info(struct seq_file *m, void *data);
  1515. extern int drm_vm_info(struct seq_file *m, void *data);
  1516. extern int drm_bufs_info(struct seq_file *m, void *data);
  1517. extern int drm_vblank_info(struct seq_file *m, void *data);
  1518. extern int drm_clients_info(struct seq_file *m, void* data);
  1519. extern int drm_gem_name_info(struct seq_file *m, void *data);
  1520.  
  1521. #if DRM_DEBUG_CODE
  1522. extern int drm_vma_info(struct seq_file *m, void *data);
  1523. #endif
  1524.  
  1525.                                 /* Scatter Gather Support (drm_scatter.h) */
  1526. extern void drm_sg_cleanup(struct drm_sg_mem * entry);
  1527. extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
  1528.                         struct drm_file *file_priv);
  1529. extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
  1530. extern int drm_sg_free(struct drm_device *dev, void *data,
  1531.                        struct drm_file *file_priv);
  1532.  
  1533.                                /* ATI PCIGART support (ati_pcigart.h) */
  1534. extern int drm_ati_pcigart_init(struct drm_device *dev,
  1535.                                 struct drm_ati_pcigart_info * gart_info);
  1536. extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
  1537.                                    struct drm_ati_pcigart_info * gart_info);
  1538. #endif
  1539.  
  1540. extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
  1541.                                        size_t align);
  1542. extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
  1543. extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
  1544.  
  1545. #if 0
  1546.                                /* sysfs support (drm_sysfs.c) */
  1547. struct drm_sysfs_class;
  1548. extern struct class *drm_sysfs_create(struct module *owner, char *name);
  1549. extern void drm_sysfs_destroy(void);
  1550. extern int drm_sysfs_device_add(struct drm_minor *minor);
  1551. extern void drm_sysfs_hotplug_event(struct drm_device *dev);
  1552. extern void drm_sysfs_device_remove(struct drm_minor *minor);
  1553. extern char *drm_get_connector_status_name(enum drm_connector_status status);
  1554.  
  1555. static inline int drm_sysfs_connector_add(struct drm_connector *connector)
  1556. { return 0; };
  1557.  
  1558. static inline void drm_sysfs_connector_remove(struct drm_connector *connector)
  1559. { };
  1560.  
  1561. #endif
  1562.  
  1563. /* Graphics Execution Manager library functions (drm_gem.c) */
  1564. int drm_gem_init(struct drm_device *dev);
  1565. void drm_gem_destroy(struct drm_device *dev);
  1566. void drm_gem_object_release(struct drm_gem_object *obj);
  1567. void drm_gem_object_free(struct kref *kref);
  1568. struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
  1569.                                             size_t size);
  1570. int drm_gem_object_init(struct drm_device *dev,
  1571.                         struct drm_gem_object *obj, size_t size);
  1572. int drm_gem_private_object_init(struct drm_device *dev,
  1573.                         struct drm_gem_object *obj, size_t size);
  1574. void drm_gem_object_handle_free(struct drm_gem_object *obj);
  1575. void drm_gem_vm_open(struct vm_area_struct *vma);
  1576. void drm_gem_vm_close(struct vm_area_struct *vma);
  1577. int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
  1578.  
  1579.  
  1580. static inline void
  1581. drm_gem_object_reference(struct drm_gem_object *obj)
  1582. {
  1583.         kref_get(&obj->refcount);
  1584. }
  1585.  
  1586. static inline void
  1587. drm_gem_object_unreference(struct drm_gem_object *obj)
  1588. {
  1589.         if (obj != NULL)
  1590.                 kref_put(&obj->refcount, drm_gem_object_free);
  1591. }
  1592.  
  1593. #if 0
  1594. static inline void
  1595. drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
  1596. {
  1597.         if (obj != NULL) {
  1598.                 struct drm_device *dev = obj->dev;
  1599.                 mutex_lock(&dev->struct_mutex);
  1600.         kref_put(&obj->refcount, drm_gem_object_free);
  1601.                 mutex_unlock(&dev->struct_mutex);
  1602.         }
  1603. }
  1604.  
  1605. int drm_gem_handle_create(struct drm_file *file_priv,
  1606.                           struct drm_gem_object *obj,
  1607.                           u32 *handlep);
  1608. int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
  1609.  
  1610. static inline void
  1611. drm_gem_object_handle_reference(struct drm_gem_object *obj)
  1612. {
  1613.         drm_gem_object_reference(obj);
  1614.         atomic_inc(&obj->handle_count);
  1615. }
  1616.  
  1617. static inline void
  1618. drm_gem_object_handle_unreference(struct drm_gem_object *obj)
  1619. {
  1620.         if (obj == NULL)
  1621.                 return;
  1622.  
  1623.         if (atomic_read(&obj->handle_count) == 0)
  1624.                 return;
  1625.         /*
  1626.          * Must bump handle count first as this may be the last
  1627.          * ref, in which case the object would disappear before we
  1628.          * checked for a name
  1629.          */
  1630.         if (atomic_dec_and_test(&obj->handle_count))
  1631.                 drm_gem_object_handle_free(obj);
  1632.         drm_gem_object_unreference(obj);
  1633. }
  1634.  
  1635. static inline void
  1636. drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
  1637. {
  1638.         if (obj == NULL)
  1639.                 return;
  1640.  
  1641.         if (atomic_read(&obj->handle_count) == 0)
  1642.                 return;
  1643.  
  1644.         /*
  1645.         * Must bump handle count first as this may be the last
  1646.         * ref, in which case the object would disappear before we
  1647.         * checked for a name
  1648.         */
  1649.  
  1650.         if (atomic_dec_and_test(&obj->handle_count))
  1651.                 drm_gem_object_handle_free(obj);
  1652.         drm_gem_object_unreference_unlocked(obj);
  1653. }
  1654.  
  1655.  
  1656. struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
  1657.                                              struct drm_file *filp,
  1658.                                              u32 handle);
  1659. int drm_gem_close_ioctl(struct drm_device *dev, void *data,
  1660.                         struct drm_file *file_priv);
  1661. int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
  1662.                         struct drm_file *file_priv);
  1663. int drm_gem_open_ioctl(struct drm_device *dev, void *data,
  1664.                        struct drm_file *file_priv);
  1665. void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
  1666. void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
  1667.  
  1668. extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
  1669. extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
  1670. extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
  1671.  
  1672. static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
  1673.                                                          unsigned int token)
  1674. {
  1675.         struct drm_map_list *_entry;
  1676.         list_for_each_entry(_entry, &dev->maplist, head)
  1677.             if (_entry->user_token == token)
  1678.                 return _entry->map;
  1679.         return NULL;
  1680. }
  1681.  
  1682. static __inline__ void drm_core_dropmap(struct drm_local_map *map)
  1683. {
  1684. }
  1685.  
  1686.  
  1687.  
  1688. static __inline__ void *drm_calloc_large(size_t nmemb, size_t size)
  1689. {
  1690.         if (size * nmemb <= PAGE_SIZE)
  1691.             return kcalloc(nmemb, size, GFP_KERNEL);
  1692.  
  1693.         if (size != 0 && nmemb > ULONG_MAX / size)
  1694.                 return NULL;
  1695.  
  1696.         return __vmalloc(size * nmemb,
  1697.                          GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL);
  1698. }
  1699.  
  1700. static __inline void drm_free_large(void *ptr)
  1701. {
  1702.         if (!is_vmalloc_addr(ptr))
  1703.                 return kfree(ptr);
  1704.  
  1705.         vfree(ptr);
  1706. }
  1707.  
  1708. #endif
  1709.  
  1710. #define DRM_PCIE_SPEED_25 1
  1711. #define DRM_PCIE_SPEED_50 2
  1712. #define DRM_PCIE_SPEED_80 4
  1713.  
  1714. extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
  1715.  
  1716. static __inline__ int drm_device_is_agp(struct drm_device *dev)
  1717. {
  1718.     return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
  1719. }
  1720.  
  1721. static __inline__ int drm_device_is_pcie(struct drm_device *dev)
  1722. {
  1723.     return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
  1724. }
  1725. #endif                          /* __KERNEL__ */
  1726.  
  1727. #define drm_sysfs_connector_add(connector)
  1728. #define drm_sysfs_connector_remove(connector)
  1729.  
  1730. #endif
  1731.