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Documentation for most of the DRM ioctls argument structures in drm.h.
Fixes to the xf86drm.c documentation.
This commit is contained in:
Jose Fonseca
parent
b4f35d5191
commit
6ded963ac6
2 changed files with 201 additions and 36 deletions
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@ -95,18 +95,19 @@
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#define _DRM_LOCK_IS_CONT(lock) ((lock) & _DRM_LOCK_CONT)
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#define _DRM_LOCKING_CONTEXT(lock) ((lock) & ~(_DRM_LOCK_HELD|_DRM_LOCK_CONT))
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typedef unsigned long drm_handle_t;
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typedef unsigned int drm_context_t;
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typedef unsigned int drm_drawable_t;
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typedef unsigned int drm_magic_t;
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/* Warning: If you change this structure, make sure you change
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* XF86DRIClipRectRec in the server as well */
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/* KW: Actually it's illegal to change either for
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* backwards-compatibility reasons.
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*/
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typedef struct drm_clip_rect {
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unsigned short x1;
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unsigned short y1;
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@ -114,6 +115,7 @@ typedef struct drm_clip_rect {
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unsigned short y2;
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} drm_clip_rect_t;
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typedef struct drm_tex_region {
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unsigned char next;
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unsigned char prev;
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@ -122,6 +124,12 @@ typedef struct drm_tex_region {
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unsigned int age;
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} drm_tex_region_t;
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/**
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* \brief DRM_IOCTL_VERSION ioctl argument type.
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*
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* \sa drmGetVersion().
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*/
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typedef struct drm_version {
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int version_major; /**< Major version */
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int version_minor; /**< Minor version */
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@ -134,20 +142,34 @@ typedef struct drm_version {
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char *desc; /**< User-space buffer to hold desc */
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} drm_version_t;
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/**
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* \brief DRM_IOCTL_GET_UNIQUE ioctl argument type.
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*
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* \sa drmGetBusid() and drmSetBusId().
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*/
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typedef struct drm_unique {
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size_t unique_len; /**< Length of unique */
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char *unique; /**< Unique name for driver instantiation */
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} drm_unique_t;
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typedef struct drm_list {
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int count; /**< Length of user-space structures */
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drm_version_t *version;
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} drm_list_t;
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typedef struct drm_block {
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int unused;
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} drm_block_t;
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/**
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* \brief DRM_IOCTL_CONTROL ioctl argument type.
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*
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* \sa drmCtlInstHandler() and drmCtlUninstHandler().
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*/
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typedef struct drm_control {
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enum {
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DRM_ADD_COMMAND,
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@ -158,6 +180,10 @@ typedef struct drm_control {
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int irq;
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} drm_control_t;
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/**
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* \brief Type of memory to map.
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*/
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typedef enum drm_map_type {
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_DRM_FRAME_BUFFER = 0, /**< WC (no caching), no core dump */
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_DRM_REGISTERS = 1, /**< no caching, no core dump */
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@ -166,6 +192,10 @@ typedef enum drm_map_type {
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_DRM_SCATTER_GATHER = 4 /**< Scatter/gather memory for PCI DMA */
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} drm_map_type_t;
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/**
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* \brief Memory mapping flags.
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*/
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typedef enum drm_map_flags {
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_DRM_RESTRICTED = 0x01, /**< Cannot be mapped to user-virtual */
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_DRM_READ_ONLY = 0x02,
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@ -176,22 +206,34 @@ typedef enum drm_map_flags {
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_DRM_REMOVABLE = 0x40 /**< Removable mapping */
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} drm_map_flags_t;
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typedef struct drm_ctx_priv_map {
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unsigned int ctx_id; /**< Context requesting private mapping */
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void *handle; /**< Handle of map */
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} drm_ctx_priv_map_t;
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/**
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* \brief DRM_IOCTL_GET_MAP, DRM_IOCTL_ADD_MAP and DRM_IOCTL_RM_MAP ioctls
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* argument type.
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*
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* \sa drmAddMap().
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*/
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typedef struct drm_map {
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unsigned long offset; /**< Requested physical address (0 for SAREA)*/
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unsigned long size; /**< Requested physical size (bytes) */
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drm_map_type_t type; /**< Type of memory to map */
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drm_map_flags_t flags; /**< Flags */
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void *handle; /**< User-space: "Handle" to pass to mmap */
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void *handle; /**< User-space: "Handle" to pass to mmap() */
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/**< Kernel-space: kernel-virtual address */
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int mtrr; /**< MTRR slot used */
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/**< Private data */
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/* Private data */
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} drm_map_t;
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/**
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* \brief DRM_IOCTL_GET_CLIENT ioctl argument type.
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*/
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typedef struct drm_client {
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int idx; /**< Which client desired? */
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int auth; /**< Is client authenticated? */
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@ -201,6 +243,7 @@ typedef struct drm_client {
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unsigned long iocs; /**< Ioctl count */
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} drm_client_t;
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typedef enum {
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_DRM_STAT_LOCK,
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_DRM_STAT_OPENS,
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@ -222,6 +265,10 @@ typedef enum {
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/* Add to the *END* of the list */
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} drm_stat_type_t;
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/**
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* \brief DRM_IOCTL_GET_STATS ioctl argument type.
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*/
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typedef struct drm_stats {
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unsigned long count;
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struct {
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@ -230,6 +277,10 @@ typedef struct drm_stats {
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} data[15];
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} drm_stats_t;
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/**
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* \brief Hardware locking flags.
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*/
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typedef enum drm_lock_flags {
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_DRM_LOCK_READY = 0x01, /**< Wait until hardware is ready for DMA */
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_DRM_LOCK_QUIESCENT = 0x02, /**< Wait until hardware quiescent */
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@ -242,12 +293,27 @@ typedef enum drm_lock_flags {
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_DRM_HALT_CUR_QUEUES = 0x20 /**< Halt all current queues */
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} drm_lock_flags_t;
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/**
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* \brief DRM_IOCTL_LOCK, DRM_IOCTL_UNLOCK and DRM_IOCTL_FINISH ioctl argument type.
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*
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* \sa drmGetLock() and drmUnlock().
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*/
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typedef struct drm_lock {
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int context;
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drm_lock_flags_t flags;
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} drm_lock_t;
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typedef enum drm_dma_flags { /* These values *MUST* match xf86drm.h */
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/**
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* \brief DMA flags
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*
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* \warning
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* These values \e must match xf86drm.h.
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*
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* \sa drm_dma.
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*/
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typedef enum drm_dma_flags {
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/* Flags for DMA buffer dispatch */
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_DRM_DMA_BLOCK = 0x01, /**<
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* Block until buffer dispatched.
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@ -268,6 +334,12 @@ typedef enum drm_dma_flags { /* These values *MUST* match xf86drm.h */
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_DRM_DMA_LARGER_OK = 0x40 /**< Larger-than-requested buffers ok */
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} drm_dma_flags_t;
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/**
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* \brief DRM_IOCTL_ADD_BUFS and DRM_IOCTL_MARK_BUFS ioctl argument type.
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*
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* \sa drmAddBufs().
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*/
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typedef struct drm_buf_desc {
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int count; /**< Number of buffers of this size */
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int size; /**< Size in bytes */
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@ -275,25 +347,39 @@ typedef struct drm_buf_desc {
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int high_mark; /**< High water mark */
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enum {
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_DRM_PAGE_ALIGN = 0x01, /**< Align on page boundaries for DMA */
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_DRM_AGP_BUFFER = 0x02, /**< Buffer is in agp space */
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_DRM_AGP_BUFFER = 0x02, /**< Buffer is in AGP space */
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_DRM_SG_BUFFER = 0x04 /**< Scatter/gather memory buffer */
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} flags;
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unsigned long agp_start; /**<
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* Start address of where the agp buffers are
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* in the agp aperture
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* Start address of where the AGP buffers are
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* in the AGP aperture
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*/
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} drm_buf_desc_t;
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/**
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* \brief DRM_IOCTL_INFO_BUFS ioctl argument type.
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*/
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typedef struct drm_buf_info {
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int count; /**< Entries in list */
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drm_buf_desc_t *list;
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} drm_buf_info_t;
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/**
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* \brief DRM_IOCTL_FREE_BUFS ioctl argument type.
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*/
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typedef struct drm_buf_free {
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int count;
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int *list;
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} drm_buf_free_t;
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/**
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* \brief Buffer information
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*
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* \sa drm_buf_map.
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*/
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typedef struct drm_buf_pub {
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int idx; /**< Index into master buflist */
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int total; /**< Buffer size */
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@ -301,15 +387,25 @@ typedef struct drm_buf_pub {
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void *address; /**< Address of buffer */
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} drm_buf_pub_t;
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/**
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* \brief DRM_IOCTL_MAP_BUFS ioctl argument type.
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*/
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typedef struct drm_buf_map {
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int count; /**< Length of buflist */
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void *virtual; /**< Mmaped area in user-virtual */
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drm_buf_pub_t *list; /**< Buffer information */
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} drm_buf_map_t;
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/**
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* \brief DRM_IOCTL_DMA ioctl argument type.
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*
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* Indices here refer to the offset into buflist in drm_buf_get_t.
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*
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* \sa drmDMA().
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*/
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typedef struct drm_dma {
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/* Indices here refer to the offset into
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buflist in drm_buf_get_t. */
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int context; /**< Context handle */
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int send_count; /**< Number of buffers to send */
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int *send_indices; /**< List of handles to buffers */
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@ -322,50 +418,79 @@ typedef struct drm_dma {
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int granted_count; /**< Number of buffers granted */
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} drm_dma_t;
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typedef enum {
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_DRM_CONTEXT_PRESERVED = 0x01,
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_DRM_CONTEXT_2DONLY = 0x02
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} drm_ctx_flags_t;
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/**
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* \brief DRM_IOCTL_ADD_CTX ioctl argument type.
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*
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* \sa drmCreateContext() and drmDestroyContext().
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*/
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typedef struct drm_ctx {
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drm_context_t handle;
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drm_ctx_flags_t flags;
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} drm_ctx_t;
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/**
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* \brief DRM_IOCTL_RES_CTX ioctl argument type.
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*/
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typedef struct drm_ctx_res {
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int count;
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drm_ctx_t *contexts;
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} drm_ctx_res_t;
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/**
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* \brief DRM_IOCTL_ADD_DRAW and DRM_IOCTL_RM_DRAW ioctl argument type.
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*/
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typedef struct drm_draw {
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drm_drawable_t handle;
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} drm_draw_t;
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/**
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* \brief DRM_IOCTL_GET_MAGIC and DRM_IOCTL_AUTH_MAGIC ioctl argument type.
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*/
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typedef struct drm_auth {
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drm_magic_t magic;
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} drm_auth_t;
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/**
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* \brief DRM_IOCTL_IRQ_BUSID ioctl argument type.
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*
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* \sa drmGetInterruptFromBusID().
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*/
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typedef struct drm_irq_busid {
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int irq;
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int busnum;
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int devnum;
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int funcnum;
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int irq; /**< IRQ number */
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int busnum; /**< bus number */
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int devnum; /**< device number */
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int funcnum; /**< function number */
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} drm_irq_busid_t;
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typedef enum {
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_DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */
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_DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */
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_DRM_VBLANK_SIGNAL = 0x80000000 /**< Send signal instead of blocking */
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} drm_vblank_seq_type_t;
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#define _DRM_VBLANK_FLAGS_MASK _DRM_VBLANK_SIGNAL
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struct drm_wait_vblank_request {
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drm_vblank_seq_type_t type;
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unsigned int sequence;
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unsigned long signal;
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};
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struct drm_wait_vblank_reply {
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drm_vblank_seq_type_t type;
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unsigned int sequence;
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@ -373,33 +498,59 @@ struct drm_wait_vblank_reply {
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long tval_usec;
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};
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/**
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* \brief DRM_IOCTL_WAIT_VBLANK ioctl argument type.
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*
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* \sa drmWaitVBlank().
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*/
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typedef union drm_wait_vblank {
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struct drm_wait_vblank_request request;
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struct drm_wait_vblank_reply reply;
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} drm_wait_vblank_t;
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typedef struct drm_agp_mode {
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unsigned long mode;
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} drm_agp_mode_t;
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/**
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* For drm_agp_alloc -- allocated a buffer
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* \brief DRM_IOCTL_AGP_ENABLE ioctl argument type.
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*
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* \sa drmAgpEnable().
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*/
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typedef struct drm_agp_mode {
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unsigned long mode; /**< AGP mode */
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} drm_agp_mode_t;
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/**
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* \brief DRM_IOCTL_AGP_ALLOC and DRM_IOCTL_AGP_FREE ioctls argument type.
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*
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* \sa drmAgpAlloc() and drmAgpFree().
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*/
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typedef struct drm_agp_buffer {
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unsigned long size; /**< In bytes -- will round to page boundary */
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unsigned long handle; /**< Used for BIND/UNBIND ioctls */
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unsigned long handle; /**< Used for binding / unbinding */
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unsigned long type; /**< Type of memory to allocate */
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unsigned long physical; /**< Physical used by i810 */
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} drm_agp_buffer_t;
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/**
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* For drm_agp_bind
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* \brief DRM_IOCTL_AGP_BIND and DRM_IOCTL_AGP_UNBIND ioctls argument type.
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*
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* \sa drmAgpBind() and drmAgpUnbind().
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*/
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typedef struct drm_agp_binding {
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unsigned long handle; /**< From drm_agp_buffer */
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unsigned long offset; /**< In bytes -- will round to page boundary */
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} drm_agp_binding_t;
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/**
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* \brief DRM_IOCTL_AGP_INFO ioctl argument type.
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*
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* \sa drmAgpVersionMajor(), drmAgpVersionMinor(), drmAgpGetMode(),
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* drmAgpBase(), drmAgpSize(), drmAgpMemoryUsed(), drmAgpMemoryAvail(),
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* drmAgpVendorId() and drmAgpDeviceId().
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*/
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typedef struct drm_agp_info {
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int agp_version_major;
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int agp_version_minor;
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@ -414,11 +565,16 @@ typedef struct drm_agp_info {
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unsigned short id_device;
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} drm_agp_info_t;
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/**
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* \brief DRM_IOCTL_SG_ALLOC ioctl argument type.
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*/
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typedef struct drm_scatter_gather {
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unsigned long size; /**< In bytes -- will round to page boundary */
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unsigned long handle; /**< Used for mapping / unmapping */
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} drm_scatter_gather_t;
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#define DRM_IOCTL_BASE 'd'
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#define DRM_IO(nr) _IO(DRM_IOCTL_BASE,nr)
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#define DRM_IOR(nr,type) _IOR(DRM_IOCTL_BASE,nr,type)
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@ -480,7 +636,10 @@ typedef struct drm_scatter_gather {
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/**
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* Device specific ioctls should only be in their respective headers
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* The device specific ioctl range is 0x40 to 0x79.
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* The device specific ioctl range is from 0x40 to 0x79.
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*
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* \sa drmCommandNone(), drmCommandRead(), drmCommandWrite(), and
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* drmCommandReadWrite().
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*/
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#define DRM_COMMAND_BASE 0x40
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@ -529,13 +529,16 @@ drmVersionPtr drmGetVersion(int fd)
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/**
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* \brief Set version information for the DRM user space library.
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* \brief Get version information for the DRM user space library.
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*
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* This version number is driver indepedent.
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*
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* \param fd file descriptor.
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*
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* \return version information.
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*
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* This version number is driver indepedent.
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* \internal
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* Allocates and fills a drm_version_t structure.
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*/
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drmVersionPtr drmGetLibVersion(int fd)
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{
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@ -559,6 +562,9 @@ drmVersionPtr drmGetLibVersion(int fd)
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* \brief Free the bus ID information.
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*
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* \param busid bus ID information string as given by drmGetBusid().
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*
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* \internal
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* Alias for free().
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*/
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void drmFreeBusid(const char *busid)
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{
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@ -574,8 +580,9 @@ void drmFreeBusid(const char *busid)
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* \return bus ID string.
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*
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* \internal
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* Get the bus ID via sucessive DRM_IOCTL_GET_UNIQUE ioctls to get the string
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* length and data.
|
||||
* Get the bus ID via sucessive DRM_IOCTL_GET_UNIQUE ioctls to get the
|
||||
* string length and data, passing the arguments in a drm_unique_t
|
||||
* type.
|
||||
*/
|
||||
char *drmGetBusid(int fd)
|
||||
{
|
||||
|
|
@ -601,7 +608,8 @@ char *drmGetBusid(int fd)
|
|||
* \return zero on sucess, negative on failure.
|
||||
*
|
||||
* \internal
|
||||
* Set the bus ID via the DRM_IOCTL_SET_UNIQUE ioctl.
|
||||
* Wrapper around the DRM_IOCTL_SET_UNIQUE ioctl. Passes the arguments
|
||||
* in a drm_unique_t structure.
|
||||
*/
|
||||
int drmSetBusid(int fd, const char *busid)
|
||||
{
|
||||
|
|
@ -699,11 +707,9 @@ int drmAddMap(int fd,
|
|||
* \return number of buffers allocated, negative on error.
|
||||
*
|
||||
* \internal
|
||||
* Wrapper around DRM_IOCTL_ADD_BUFS.
|
||||
* Wrapper around DRM_IOCTL_ADD_BUFS ioctl.
|
||||
*
|
||||
* \sa drm_buf_desc_t.
|
||||
* Passes the arguments into a drm_buf_desc_t structure to the
|
||||
* DRM_IOCTL_ADD_BUFS ioctl.
|
||||
* \sa drm_buf_desc.
|
||||
*/
|
||||
int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags,
|
||||
int agp_offset)
|
||||
|
|
@ -1130,7 +1136,7 @@ int drmAgpAlloc(int fd, unsigned long size, unsigned long type,
|
|||
* \internal
|
||||
* Wrapper around the DRM_IOCTL_AGP_FREE ioctl.
|
||||
*
|
||||
* \sa drm_agp_buffer_t.
|
||||
* \sa drm_agp_buffer.
|
||||
*/
|
||||
int drmAgpFree(int fd, unsigned long handle)
|
||||
{
|
||||
|
|
@ -1155,7 +1161,7 @@ int drmAgpFree(int fd, unsigned long handle)
|
|||
* \internal
|
||||
* Wrapper around the DRM_IOCTL_AGP_BIND ioctl.
|
||||
*
|
||||
* \sa drm_agp_binding_t.
|
||||
* \sa drm_agp_binding.
|
||||
*/
|
||||
int drmAgpBind(int fd, unsigned long handle, unsigned long offset)
|
||||
{
|
||||
|
|
@ -1179,7 +1185,7 @@ int drmAgpBind(int fd, unsigned long handle, unsigned long offset)
|
|||
* \internal
|
||||
* Wrapper around the DRM_IOCTL_AGP_UNBIND ioctl.
|
||||
*
|
||||
* \sa drm_agp_binding_t.
|
||||
* \sa drm_agp_binding.
|
||||
*/
|
||||
int drmAgpUnbind(int fd, unsigned long handle)
|
||||
{
|
||||
|
|
@ -1455,7 +1461,7 @@ int drmGetInterruptFromBusID(int fd, int busnum, int devnum, int funcnum)
|
|||
|
||||
|
||||
/**
|
||||
* \brief Send a command.
|
||||
* \brief Send a device-specific command.
|
||||
*
|
||||
* \param fd file descriptor.
|
||||
* \param drmCommandIndex command index
|
||||
|
|
@ -1479,7 +1485,7 @@ int drmCommandNone(int fd, unsigned long drmCommandIndex)
|
|||
|
||||
|
||||
/**
|
||||
* \brief Send a read command.
|
||||
* \brief Send a device-specific read command.
|
||||
*
|
||||
* \param fd file descriptor.
|
||||
* \param drmCommandIndex command index
|
||||
|
|
@ -1506,7 +1512,7 @@ int drmCommandRead(int fd, unsigned long drmCommandIndex,
|
|||
|
||||
|
||||
/**
|
||||
* \brief Send a write command.
|
||||
* \brief Send a device-specific write command.
|
||||
*
|
||||
* \param fd file descriptor.
|
||||
* \param drmCommandIndex command index
|
||||
|
|
@ -1533,7 +1539,7 @@ int drmCommandWrite(int fd, unsigned long drmCommandIndex,
|
|||
|
||||
|
||||
/**
|
||||
* \brief Send a read-write command.
|
||||
* \brief Send a device-specific read-write command.
|
||||
*
|
||||
* \param fd file descriptor.
|
||||
* \param drmCommandIndex command index
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue