diff options
Diffstat (limited to 'linux-core/drmP.h')
| -rw-r--r-- | linux-core/drmP.h | 486 |
1 files changed, 315 insertions, 171 deletions
diff --git a/linux-core/drmP.h b/linux-core/drmP.h index 1f0ef128..5626e4ff 100644 --- a/linux-core/drmP.h +++ b/linux-core/drmP.h @@ -1,6 +1,12 @@ -/* drmP.h -- Private header for Direct Rendering Manager -*- linux-c -*- - * Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com - * +/** + * \file drmP.h + * Private header for Direct Rendering Manager + * + * \author Rickard E. (Rik) Faith <faith@valinux.com> + * \author Gareth Hughes <gareth@valinux.com> + */ + +/* * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * All rights reserved. @@ -23,15 +29,12 @@ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: - * Rickard E. (Rik) Faith <faith@valinux.com> - * Gareth Hughes <gareth@valinux.com> */ #ifndef _DRM_P_H_ #define _DRM_P_H_ + #ifdef __KERNEL__ #ifdef __alpha__ /* add include of current.h so that "current" is defined @@ -83,8 +86,11 @@ #include "drm_os_linux.h" -/* DRM template customization defaults - */ + +/***********************************************************************/ +/** \name DRM template customization defaults */ +/*@{*/ + #ifndef __HAVE_AGP #define __HAVE_AGP 0 #endif @@ -112,19 +118,23 @@ #define __REALLY_HAVE_MTRR (__HAVE_MTRR && defined(CONFIG_MTRR)) #define __REALLY_HAVE_SG (__HAVE_SG) -/* Begin the DRM... - */ +/*@}*/ + -#define DRM_DEBUG_CODE 2 /* Include debugging code (if > 1, then +/***********************************************************************/ +/** \name Begin the DRM... */ +/*@{*/ + +#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then also include looping detection. */ -#define DRM_HASH_SIZE 16 /* Size of key hash table */ -#define DRM_KERNEL_CONTEXT 0 /* Change drm_resctx if changed */ -#define DRM_RESERVED_CONTEXTS 1 /* Change drm_resctx if changed */ +#define DRM_HASH_SIZE 16 /**< Size of key hash table. Must be power of 2. */ +#define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */ +#define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */ #define DRM_LOOPING_LIMIT 5000000 -#define DRM_BSZ 1024 /* Buffer size for /dev/drm? output */ -#define DRM_TIME_SLICE (HZ/20) /* Time slice for GLXContexts */ -#define DRM_LOCK_SLICE 1 /* Time slice for lock, in jiffies */ +#define DRM_BSZ 1024 /**< Buffer size for /dev/drm? output */ +#define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */ +#define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */ #define DRM_FLAG_DEBUG 0x01 @@ -151,8 +161,14 @@ #define DRM_MEM_SGLISTS 20 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8) + +/*@}*/ + + +/***********************************************************************/ +/** \name Backward compatibility section */ +/*@{*/ - /* Backward compatibility section */ #ifndef minor #define minor(x) MINOR((x)) #endif @@ -217,17 +233,42 @@ static inline struct page * vmalloc_to_page(void * vmalloc_addr) #define DRM_RPR_ARG(vma) vma, #endif - #define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT) - /* Macros to make printk easier */ +/*@}*/ + + +/***********************************************************************/ +/** \name Macros to make printk easier */ +/*@{*/ + +/** + * Error output. + * + * \param fmt printf() like format string. + * \param arg arguments + */ #define DRM_ERROR(fmt, arg...) \ printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg) + +/** + * Memory error output. + * + * \param area memory area where the error occurred. + * \param fmt printf() like format string. + * \param arg arguments + */ #define DRM_MEM_ERROR(area, fmt, arg...) \ printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \ DRM(mem_stats)[area].name , ##arg) #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg) +/** + * Debug output. + * + * \param fmt printf() like format string. + * \param arg arguments + */ #if DRM_DEBUG_CODE #define DRM_DEBUG(fmt, arg...) \ do { \ @@ -250,7 +291,13 @@ static inline struct page * vmalloc_to_page(void * vmalloc_addr) len += sprintf(&buf[len], fmt , ##arg); \ if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; } - /* Mapping helper macros */ +/*@}*/ + + +/***********************************************************************/ +/** \name Mapping helper macros */ +/*@{*/ + #define DRM_IOREMAP(map, dev) \ (map)->handle = DRM(ioremap)( (map)->offset, (map)->size, (dev) ) @@ -263,6 +310,15 @@ static inline struct page * vmalloc_to_page(void * vmalloc_addr) DRM(ioremapfree)( (map)->handle, (map)->size, (dev) ); \ } while (0) +/** + * Find mapping. + * + * \param _map matching mapping if found, untouched otherwise. + * \param _o offset. + * + * Expects the existence of a local variable named \p dev pointing to the + * drm_device structure. + */ #define DRM_FIND_MAP(_map, _o) \ do { \ struct list_head *_list; \ @@ -275,9 +331,21 @@ do { \ } \ } \ } while(0) + +/** + * Drop mapping. + * + * \sa #DRM_FIND_MAP. + */ #define DRM_DROP_MAP(_map) - /* Internal types and structures */ +/*@}*/ + + +/***********************************************************************/ +/** \name Internal types and structures */ +/*@{*/ + #define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) #define DRM_MIN(a,b) ((a)<(b)?(a):(b)) #define DRM_MAX(a,b) ((a)>(b)?(a):(b)) @@ -286,10 +354,23 @@ do { \ #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x)) #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist) +/** + * Get the private SAREA mapping. + * + * \param _dev DRM device. + * \param _ctx context number. + * \param _map output mapping. + */ #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \ (_map) = (_dev)->context_sareas[_ctx]; \ } while(0) +/** + * Test that the hardware lock is held by the caller, returning otherwise. + * + * \param dev DRM device. + * \param filp file pointer of the caller. + */ #define LOCK_TEST_WITH_RETURN( dev, filp ) \ do { \ if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) || \ @@ -300,7 +381,14 @@ do { \ } \ } while (0) - +/** + * Ioctl function type. + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg argument. + */ typedef int drm_ioctl_t( struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg ); @@ -316,8 +404,7 @@ typedef struct drm_ioctl_desc { } drm_ioctl_desc_t; typedef struct drm_devstate { - pid_t owner; /* X server pid holding x_lock */ - + pid_t owner; /**< X server pid holding x_lock */ } drm_devstate_t; typedef struct drm_magic_entry { @@ -337,21 +424,24 @@ typedef struct drm_vma_entry { pid_t pid; } drm_vma_entry_t; +/** + * DMA buffer. + */ typedef struct drm_buf { - int idx; /* Index into master buflist */ - int total; /* Buffer size */ - int order; /* log-base-2(total) */ - int used; /* Amount of buffer in use (for DMA) */ - unsigned long offset; /* Byte offset (used internally) */ - void *address; /* Address of buffer */ - unsigned long bus_address; /* Bus address of buffer */ - struct drm_buf *next; /* Kernel-only: used for free list */ - __volatile__ int waiting; /* On kernel DMA queue */ - __volatile__ int pending; /* On hardware DMA queue */ - wait_queue_head_t dma_wait; /* Processes waiting */ - struct file *filp; /* Pointer to holding file descr */ - int context; /* Kernel queue for this buffer */ - int while_locked;/* Dispatch this buffer while locked */ + int idx; /**< Index into master buflist */ + int total; /**< Buffer size */ + int order; /**< log-base-2(total) */ + int used; /**< Amount of buffer in use (for DMA) */ + unsigned long offset; /**< Byte offset (used internally) */ + void *address; /**< Address of buffer */ + unsigned long bus_address; /**< Bus address of buffer */ + struct drm_buf *next; /**< Kernel-only: used for free list */ + __volatile__ int waiting; /**< On kernel DMA queue */ + __volatile__ int pending; /**< On hardware DMA queue */ + wait_queue_head_t dma_wait; /**< Processes waiting */ + struct file *filp; /**< Pointer to holding file descr */ + int context; /**< Kernel queue for this buffer */ + int while_locked;/**< Dispatch this buffer while locked */ enum { DRM_LIST_NONE = 0, DRM_LIST_FREE = 1, @@ -359,41 +449,43 @@ typedef struct drm_buf { DRM_LIST_PEND = 3, DRM_LIST_PRIO = 4, DRM_LIST_RECLAIM = 5 - } list; /* Which list we're on */ - + } list; /**< Which list we're on */ - int dev_priv_size; /* Size of buffer private stoarge */ - void *dev_private; /* Per-buffer private storage */ + int dev_priv_size; /**< Size of buffer private storage */ + void *dev_private; /**< Per-buffer private storage */ } drm_buf_t; - /* bufs is one longer than it has to be */ +/** bufs is one longer than it has to be */ typedef struct drm_waitlist { - int count; /* Number of possible buffers */ - drm_buf_t **bufs; /* List of pointers to buffers */ - drm_buf_t **rp; /* Read pointer */ - drm_buf_t **wp; /* Write pointer */ - drm_buf_t **end; /* End pointer */ + int count; /**< Number of possible buffers */ + drm_buf_t **bufs; /**< List of pointers to buffers */ + drm_buf_t **rp; /**< Read pointer */ + drm_buf_t **wp; /**< Write pointer */ + drm_buf_t **end; /**< End pointer */ spinlock_t read_lock; spinlock_t write_lock; } drm_waitlist_t; typedef struct drm_freelist { - int initialized; /* Freelist in use */ - atomic_t count; /* Number of free buffers */ - drm_buf_t *next; /* End pointer */ - - wait_queue_head_t waiting; /* Processes waiting on free bufs */ - int low_mark; /* Low water mark */ - int high_mark; /* High water mark */ - atomic_t wfh; /* If waiting for high mark */ + int initialized; /**< Freelist in use */ + atomic_t count; /**< Number of free buffers */ + drm_buf_t *next; /**< End pointer */ + + wait_queue_head_t waiting; /**< Processes waiting on free bufs */ + int low_mark; /**< Low water mark */ + int high_mark; /**< High water mark */ + atomic_t wfh; /**< If waiting for high mark */ spinlock_t lock; } drm_freelist_t; +/** + * Buffer entry. There is one of this for each buffer size order. + */ typedef struct drm_buf_entry { - int buf_size; - int buf_count; - drm_buf_t *buflist; + int buf_size; /**< size */ + int buf_count; /**< number of buffers */ + drm_buf_t *buflist; /**< buffer list */ int seg_count; int page_order; unsigned long *seglist; @@ -401,11 +493,19 @@ typedef struct drm_buf_entry { drm_freelist_t freelist; } drm_buf_entry_t; +/** + * Hardware lock. + * + * The lock structure is a simple cache-line aligned integer. To avoid + * processor bus contention on a multiprocessor system, there should not be any + * other data stored in the same cache line. + */ typedef struct drm_hw_lock { - __volatile__ unsigned int lock; - char padding[60]; /* Pad to cache line */ + __volatile__ unsigned int lock; /**< lock variable */ + char padding[60]; /**< Pad to cache line */ } drm_hw_lock_t; +/** File private data */ typedef struct drm_file { int authenticated; int minor; @@ -420,69 +520,85 @@ typedef struct drm_file { unsigned long lock_count; } drm_file_t; - +/** Wait queue */ typedef struct drm_queue { - atomic_t use_count; /* Outstanding uses (+1) */ - atomic_t finalization; /* Finalization in progress */ - atomic_t block_count; /* Count of processes waiting */ - atomic_t block_read; /* Queue blocked for reads */ - wait_queue_head_t read_queue; /* Processes waiting on block_read */ - atomic_t block_write; /* Queue blocked for writes */ - wait_queue_head_t write_queue; /* Processes waiting on block_write */ + atomic_t use_count; /**< Outstanding uses (+1) */ + atomic_t finalization; /**< Finalization in progress */ + atomic_t block_count; /**< Count of processes waiting */ + atomic_t block_read; /**< Queue blocked for reads */ + wait_queue_head_t read_queue; /**< Processes waiting on block_read */ + atomic_t block_write; /**< Queue blocked for writes */ + wait_queue_head_t write_queue; /**< Processes waiting on block_write */ #if 1 - atomic_t total_queued; /* Total queued statistic */ - atomic_t total_flushed;/* Total flushes statistic */ - atomic_t total_locks; /* Total locks statistics */ + atomic_t total_queued; /**< Total queued statistic */ + atomic_t total_flushed;/**< Total flushes statistic */ + atomic_t total_locks; /**< Total locks statistics */ #endif - drm_ctx_flags_t flags; /* Context preserving and 2D-only */ - drm_waitlist_t waitlist; /* Pending buffers */ - wait_queue_head_t flush_queue; /* Processes waiting until flush */ + drm_ctx_flags_t flags; /**< Context preserving and 2D-only */ + drm_waitlist_t waitlist; /**< Pending buffers */ + wait_queue_head_t flush_queue; /**< Processes waiting until flush */ } drm_queue_t; +/** + * Lock data. + */ typedef struct drm_lock_data { - drm_hw_lock_t *hw_lock; /* Hardware lock */ - struct file *filp; /* File descr of lock holder (0=kernel) */ - wait_queue_head_t lock_queue; /* Queue of blocked processes */ - unsigned long lock_time; /* Time of last lock in jiffies */ + drm_hw_lock_t *hw_lock; /**< Hardware lock */ + struct file *filp; /**< File descr of lock holder (0=kernel) */ + wait_queue_head_t lock_queue; /**< Queue of blocked processes */ + unsigned long lock_time; /**< Time of last lock in jiffies */ } drm_lock_data_t; +/** + * DMA data. + */ typedef struct drm_device_dma { - drm_buf_entry_t bufs[DRM_MAX_ORDER+1]; - int buf_count; - drm_buf_t **buflist; /* Vector of pointers info bufs */ + drm_buf_entry_t bufs[DRM_MAX_ORDER+1]; /**< buffers, grouped by their size order */ + int buf_count; /**< total number of buffers */ + drm_buf_t **buflist; /**< Vector of pointers into drm_device_dma::bufs */ int seg_count; - int page_count; - unsigned long *pagelist; + int page_count; /**< number of pages */ + unsigned long *pagelist; /**< page list */ unsigned long byte_count; enum { _DRM_DMA_USE_AGP = 0x01, _DRM_DMA_USE_SG = 0x02 } flags; - /* DMA support */ - drm_buf_t *this_buffer; /* Buffer being sent */ - drm_buf_t *next_buffer; /* Selected buffer to send */ - drm_queue_t *next_queue; /* Queue from which buffer selected*/ - wait_queue_head_t waiting; /* Processes waiting on free bufs */ + /** \name DMA support */ + /*@{*/ + drm_buf_t *this_buffer; /**< Buffer being sent */ + drm_buf_t *next_buffer; /**< Selected buffer to send */ + drm_queue_t *next_queue; /**< Queue from which buffer selected*/ + wait_queue_head_t waiting; /**< Processes waiting on free bufs */ + /*@}*/ } drm_device_dma_t; #if __REALLY_HAVE_AGP +/** + * AGP memory entry. Stored as a doubly linked list. + */ typedef struct drm_agp_mem { - unsigned long handle; - agp_memory *memory; - unsigned long bound; /* address */ + unsigned long handle; /**< handle */ + agp_memory *memory; + unsigned long bound; /**< address */ int pages; - struct drm_agp_mem *prev; - struct drm_agp_mem *next; + struct drm_agp_mem *prev; /**< previous entry */ + struct drm_agp_mem *next; /**< next entry */ } drm_agp_mem_t; +/** + * AGP data. + * + * \sa DRM(agp_init)() and drm_device::agp. + */ typedef struct drm_agp_head { - agp_kern_info agp_info; - drm_agp_mem_t *memory; - unsigned long mode; - int enabled; - int acquired; + agp_kern_info agp_info; /**< AGP device information */ + drm_agp_mem_t *memory; /**< memory entries */ + unsigned long mode; /**< AGP mode */ + int enabled; /**< whether the AGP bus as been enabled */ + int acquired; /**< whether the AGP device has been acquired */ unsigned long base; int agp_mtrr; int cant_use_aperture; @@ -490,6 +606,9 @@ typedef struct drm_agp_head { } drm_agp_head_t; #endif +/** + * Scatter-gather memory. + */ typedef struct drm_sg_mem { unsigned long handle; void *virtual; @@ -503,9 +622,12 @@ typedef struct drm_sigdata { drm_hw_lock_t *lock; } drm_sigdata_t; +/** + * Mappings list + */ typedef struct drm_map_list { - struct list_head head; - drm_map_t *map; + struct list_head head; /**< list head */ + drm_map_t *map; /**< mapping */ } drm_map_list_t; typedef drm_map_t drm_local_map_t; @@ -521,92 +643,112 @@ typedef struct drm_vbl_sig { #endif +/** + * DRM device structure. + */ typedef struct drm_device { - const char *name; /* Simple driver name */ - char *unique; /* Unique identifier: e.g., busid */ - int unique_len; /* Length of unique field */ - dev_t device; /* Device number for mknod */ - char *devname; /* For /proc/interrupts */ - - int blocked; /* Blocked due to VC switch? */ - struct proc_dir_entry *root; /* Root for this device's entries */ - - /* Locks */ - spinlock_t count_lock; /* For inuse, open_count, buf_use */ - struct semaphore struct_sem; /* For others */ - - /* Usage Counters */ - int open_count; /* Outstanding files open */ - atomic_t ioctl_count; /* Outstanding IOCTLs pending */ - atomic_t vma_count; /* Outstanding vma areas open */ - int buf_use; /* Buffers in use -- cannot alloc */ - atomic_t buf_alloc; /* Buffer allocation in progress */ - - /* Performance counters */ + const char *name; /**< Simple driver name */ + char *unique; /**< Unique identifier: e.g., busid */ + int unique_len; /**< Length of unique field */ + dev_t device; /**< Device number for mknod */ + char *devname; /**< For /proc/interrupts */ + + int blocked; /**< Blocked due to VC switch? */ + struct proc_dir_entry *root; /**< Root for this device's entries */ + + /** \name Locks */ + /*@{*/ + spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */ + struct semaphore struct_sem; /**< For others */ + /*@}*/ + + /** \name Usage Counters */ + /*@{*/ + int open_count; /**< Outstanding files open */ + atomic_t ioctl_count; /**< Outstanding IOCTLs pending */ + atomic_t vma_count; /**< Outstanding vma areas open */ + int buf_use; /**< Buffers in use -- cannot alloc */ + atomic_t buf_alloc; /**< Buffer allocation in progress */ + /*@}*/ + + /** \name Performance counters */ + /*@{*/ unsigned long counters; drm_stat_type_t types[15]; atomic_t counts[15]; + /*@}*/ - /* Authentication */ - drm_file_t *file_first; - drm_file_t *file_last; - drm_magic_head_t magiclist[DRM_HASH_SIZE]; + /** \name Authentication */ + /*@{*/ + drm_file_t *file_first; /**< file list head */ + drm_file_t *file_last; /**< file list tail */ + drm_magic_head_t magiclist[DRM_HASH_SIZE]; /**< magic hash table */ + /*@}*/ - /* Memory management */ - drm_map_list_t *maplist; /* Linked list of regions */ + /** \name Memory management */ + /*@{*/ + drm_map_list_t *maplist; /**< Linked list of regions */ + int map_count; /**< Number of mappable regions */ - drm_map_t **context_sareas; + drm_map_t **context_sareas; /**< per-context SAREA's */ int max_context; - drm_vma_entry_t *vmalist; /* List of vmas (for debugging) */ - drm_lock_data_t lock; /* Information on hardware lock */ - - /* DMA queues (contexts) */ - int queue_count; /* Number of active DMA queues */ - int queue_reserved; /* Number of reserved DMA queues */ - int queue_slots; /* Actual length of queuelist */ - drm_queue_t **queuelist; /* Vector of pointers to DMA queues */ - drm_device_dma_t *dma; /* Optional pointer for DMA support */ - - /* Context support */ - int irq; /* Interrupt used by board */ - __volatile__ long context_flag; /* Context swapping flag */ - __volatile__ long interrupt_flag; /* Interruption handler flag */ - __volatile__ long dma_flag; /* DMA dispatch flag */ - struct timer_list timer; /* Timer for delaying ctx switch */ - wait_queue_head_t context_wait; /* Processes waiting on ctx switch */ - int last_checked; /* Last context checked for DMA */ - int last_context; /* Last current context */ - unsigned long last_switch; /* jiffies at last context switch */ + drm_vma_entry_t *vmalist; /**< List of vmas (for debugging) */ + drm_lock_data_t lock; /**< Information on hardware lock */ + /*@}*/ + + /** \name DMA queues (contexts) */ + /*@{*/ + int queue_count; /**< Number of active DMA queues */ + int queue_reserved; /**< Number of reserved DMA queues */ + int queue_slots; /**< Actual length of queuelist */ + drm_queue_t **queuelist; /**< Vector of pointers to DMA queues */ + drm_device_dma_t *dma; /**< Optional pointer for DMA support */ + /*@}*/ + + /** \name Context support */ + /*@{*/ + int irq; /**< Interrupt used by board */ + __volatile__ long context_flag; /**< Context swapping flag */ + __volatile__ long interrupt_flag; /**< Interruption handler flag */ + __volatile__ long dma_flag; /**< DMA dispatch flag */ + struct timer_list timer; /**< Timer for delaying ctx switch */ + wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */ + int last_checked; /**< Last context checked for DMA */ + int last_context; /**< Last current context */ + unsigned long last_switch; /**< jiffies at last context switch */ + /*@}*/ + #if !HAS_WORKQUEUE struct tq_struct tq; #else struct work_struct work; #endif + /** \name VBLANK IRQ support */ + /*@{*/ #if __HAVE_VBL_IRQ - wait_queue_head_t vbl_queue; + wait_queue_head_t vbl_queue; /**< VBLANK wait queue */ atomic_t vbl_received; spinlock_t vbl_lock; - drm_vbl_sig_t vbl_sigs; + drm_vbl_sig_t vbl_sigs; /**< signal list to send on VBLANK */ unsigned int vbl_pending; #endif + /*@}*/ cycles_t ctx_start; cycles_t lck_start; - /* Callback to X server for context switch - and for heavy-handed reset. */ - char buf[DRM_BSZ]; /* Output buffer */ - char *buf_rp; /* Read pointer */ - char *buf_wp; /* Write pointer */ - char *buf_end; /* End pointer */ - struct fasync_struct *buf_async;/* Processes waiting for SIGIO */ - wait_queue_head_t buf_readers; /* Processes waiting to read */ - wait_queue_head_t buf_writers; /* Processes waiting to ctx switch */ + char buf[DRM_BSZ]; /**< Output buffer */ + char *buf_rp; /**< Read pointer */ + char *buf_wp; /**< Write pointer */ + char *buf_end; /**< End pointer */ + struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */ + wait_queue_head_t buf_readers; /**< Processes waiting to read */ + wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */ #if __REALLY_HAVE_AGP - drm_agp_head_t *agp; + drm_agp_head_t *agp; /**< AGP data */ #endif - struct pci_dev *pdev; + struct pci_dev *pdev; /**< PCI device structure */ #ifdef __alpha__ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,3) struct pci_controler *hose; @@ -614,17 +756,17 @@ typedef struct drm_device { struct pci_controller *hose; #endif #endif - drm_sg_mem_t *sg; /* Scatter gather memory */ - unsigned long *ctx_bitmap; - void *dev_private; - drm_sigdata_t sigdata; /* For block_all_signals */ + drm_sg_mem_t *sg; /**< Scatter gather memory */ + unsigned long *ctx_bitmap; /**< context bitmap */ + void *dev_private; /**< device private data */ + drm_sigdata_t sigdata; /**< For block_all_signals */ sigset_t sigmask; } drm_device_t; -/* ================================================================ - * Internal function definitions - */ +/******************************************************************/ +/** \name Internal function definitions */ +/*@{*/ /* Misc. support (drm_init.h) */ extern int DRM(flags); @@ -873,5 +1015,7 @@ extern int DRM(ati_pcigart_cleanup)(drm_device_t *dev, unsigned long addr, dma_addr_t bus_addr); +/*@}*/ + #endif /* __KERNEL__ */ #endif |