drm/linux/drm.h

281 lines
10 KiB
C

/* drm.h -- Header for Direct Rendering Manager -*- linux-c -*-
* Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com
* Revised: Mon Dec 6 17:11:19 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* 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.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drm.h,v 1.46 1999/08/20 20:00:53 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drm.h,v 1.1 1999/09/25 14:37:58 dawes Exp $
*
* Acknowledgements:
* Dec 1999, Richard Henderson <rth@twiddle.net>, move to generic cmpxchg.
*
*/
#ifndef _DRM_H_
#define _DRM_H_
#include <asm/ioctl.h> /* For _IO* macros */
#define DRM_PROC_DEVICES "/proc/devices"
#define DRM_PROC_MISC "/proc/misc"
#define DRM_PROC_DRM "/proc/drm"
#define DRM_DEV_DRM "/dev/drm"
#define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
#define DRM_DEV_UID 0
#define DRM_DEV_GID 0
#define DRM_NAME "drm" /* Name in kernel, /dev, and /proc */
#define DRM_MIN_ORDER 5 /* At least 2^5 bytes = 32 bytes */
#define DRM_MAX_ORDER 22 /* Up to 2^22 bytes = 4MB */
#define DRM_RAM_PERCENT 10 /* How much system ram can we lock? */
#define _DRM_LOCK_HELD 0x80000000 /* Hardware lock is held */
#define _DRM_LOCK_CONT 0x40000000 /* Hardware lock is contended */
#define _DRM_LOCK_IS_HELD(lock) ((lock) & _DRM_LOCK_HELD)
#define _DRM_LOCK_IS_CONT(lock) ((lock) & _DRM_LOCK_CONT)
#define _DRM_LOCKING_CONTEXT(lock) ((lock) & ~(_DRM_LOCK_HELD|_DRM_LOCK_CONT))
typedef unsigned long drm_handle_t;
typedef unsigned int drm_context_t;
typedef unsigned int drm_drawable_t;
typedef unsigned int drm_magic_t;
typedef struct drm_version {
int version_major; /* Major version */
int version_minor; /* Minor version */
int version_patchlevel;/* Patch level */
size_t name_len; /* Length of name buffer */
char *name; /* Name of driver */
size_t date_len; /* Length of date buffer */
char *date; /* User-space buffer to hold date */
size_t desc_len; /* Length of desc buffer */
char *desc; /* User-space buffer to hold desc */
} drm_version_t;
typedef struct drm_unique {
size_t unique_len; /* Length of unique */
char *unique; /* Unique name for driver instantiation */
} drm_unique_t;
typedef struct drm_list {
int count; /* Length of user-space structures */
drm_version_t *version;
} drm_list_t;
typedef struct drm_block {
int unused;
} drm_block_t;
typedef struct drm_control {
enum {
DRM_ADD_COMMAND,
DRM_RM_COMMAND,
DRM_INST_HANDLER,
DRM_UNINST_HANDLER
} func;
int irq;
} drm_control_t;
typedef enum drm_map_type {
_DRM_FRAME_BUFFER = 0, /* WC (no caching), no core dump */
_DRM_REGISTERS = 1, /* no caching, no core dump */
_DRM_SHM = 2 /* shared, cached */
} drm_map_type_t;
typedef enum drm_map_flags {
_DRM_RESTRICTED = 0x01, /* Cannot be mapped to user-virtual */
_DRM_READ_ONLY = 0x02,
_DRM_LOCKED = 0x04, /* shared, cached, locked */
_DRM_KERNEL = 0x08, /* kernel requires access */
_DRM_WRITE_COMBINING = 0x10, /* use write-combining if available */
_DRM_CONTAINS_LOCK = 0x20 /* SHM page that contains lock */
} drm_map_flags_t;
typedef struct drm_map {
unsigned long offset; /* Requested physical address (0 for SAREA)*/
unsigned long size; /* Requested physical size (bytes) */
drm_map_type_t type; /* Type of memory to map */
drm_map_flags_t flags; /* Flags */
void *handle; /* User-space: "Handle" to pass to mmap */
/* Kernel-space: kernel-virtual address */
int mtrr; /* MTRR slot used */
/* Private data */
} drm_map_t;
typedef enum drm_lock_flags {
_DRM_LOCK_READY = 0x01, /* Wait until hardware is ready for DMA */
_DRM_LOCK_QUIESCENT = 0x02, /* Wait until hardware quiescent */
_DRM_LOCK_FLUSH = 0x04, /* Flush this context's DMA queue first */
_DRM_LOCK_FLUSH_ALL = 0x08, /* Flush all DMA queues first */
/* These *HALT* flags aren't supported yet
-- they will be used to support the
full-screen DGA-like mode. */
_DRM_HALT_ALL_QUEUES = 0x10, /* Halt all current and future queues */
_DRM_HALT_CUR_QUEUES = 0x20 /* Halt all current queues */
} drm_lock_flags_t;
typedef struct drm_lock {
int context;
drm_lock_flags_t flags;
} drm_lock_t;
typedef enum drm_dma_flags { /* These values *MUST* match xf86drm.h */
/* Flags for DMA buffer dispatch */
_DRM_DMA_BLOCK = 0x01, /* Block until buffer dispatched.
Note, the buffer may not yet have
been processed by the hardware --
getting a hardware lock with the
hardware quiescent will ensure
that the buffer has been
processed. */
_DRM_DMA_WHILE_LOCKED = 0x02, /* Dispatch while lock held */
_DRM_DMA_PRIORITY = 0x04, /* High priority dispatch */
/* Flags for DMA buffer request */
_DRM_DMA_WAIT = 0x10, /* Wait for free buffers */
_DRM_DMA_SMALLER_OK = 0x20, /* Smaller-than-requested buffers ok */
_DRM_DMA_LARGER_OK = 0x40 /* Larger-than-requested buffers ok */
} drm_dma_flags_t;
typedef struct drm_buf_desc {
int count; /* Number of buffers of this size */
int size; /* Size in bytes */
int low_mark; /* Low water mark */
int high_mark; /* High water mark */
enum {
DRM_PAGE_ALIGN = 0x01 /* Align on page boundaries for DMA */
} flags;
} drm_buf_desc_t;
typedef struct drm_buf_info {
int count; /* Entries in list */
drm_buf_desc_t *list;
} drm_buf_info_t;
typedef struct drm_buf_free {
int count;
int *list;
} drm_buf_free_t;
typedef struct drm_buf_pub {
int idx; /* Index into master buflist */
int total; /* Buffer size */
int used; /* Amount of buffer in use (for DMA) */
void *address; /* Address of buffer */
} drm_buf_pub_t;
typedef struct drm_buf_map {
int count; /* Length of buflist */
void *virtual; /* Mmaped area in user-virtual */
drm_buf_pub_t *list; /* Buffer information */
} drm_buf_map_t;
typedef struct drm_dma {
/* Indices here refer to the offset into
buflist in drm_buf_get_t. */
int context; /* Context handle */
int send_count; /* Number of buffers to send */
int *send_indices; /* List of handles to buffers */
int *send_sizes; /* Lengths of data to send */
drm_dma_flags_t flags; /* Flags */
int request_count; /* Number of buffers requested */
int request_size; /* Desired size for buffers */
int *request_indices; /* Buffer information */
int *request_sizes;
int granted_count; /* Number of buffers granted */
} drm_dma_t;
typedef enum {
_DRM_CONTEXT_PRESERVED = 0x01,
_DRM_CONTEXT_2DONLY = 0x02
} drm_ctx_flags_t;
typedef struct drm_ctx {
drm_context_t handle;
drm_ctx_flags_t flags;
} drm_ctx_t;
typedef struct drm_ctx_res {
int count;
drm_ctx_t *contexts;
} drm_ctx_res_t;
typedef struct drm_draw {
drm_drawable_t handle;
} drm_draw_t;
typedef struct drm_auth {
drm_magic_t magic;
} drm_auth_t;
typedef struct drm_irq_busid {
int irq;
int busnum;
int devnum;
int funcnum;
} drm_irq_busid_t;
#define DRM_IOCTL_BASE 'd'
#define DRM_IOCTL_NR(n) _IOC_NR(n)
#define DRM_IO(nr) _IO(DRM_IOCTL_BASE,nr)
#define DRM_IOR(nr,size) _IOR(DRM_IOCTL_BASE,nr,size)
#define DRM_IOW(nr,size) _IOW(DRM_IOCTL_BASE,nr,size)
#define DRM_IOWR(nr,size) _IOWR(DRM_IOCTL_BASE,nr,size)
#define DRM_IOCTL_VERSION DRM_IOWR(0x00, drm_version_t)
#define DRM_IOCTL_GET_UNIQUE DRM_IOWR(0x01, drm_unique_t)
#define DRM_IOCTL_GET_MAGIC DRM_IOW( 0x02, drm_auth_t)
#define DRM_IOCTL_IRQ_BUSID DRM_IOWR(0x03, drm_irq_busid_t)
#define DRM_IOCTL_SET_UNIQUE DRM_IOW( 0x10, drm_unique_t)
#define DRM_IOCTL_AUTH_MAGIC DRM_IOW( 0x11, drm_auth_t)
#define DRM_IOCTL_BLOCK DRM_IOWR(0x12, drm_block_t)
#define DRM_IOCTL_UNBLOCK DRM_IOWR(0x13, drm_block_t)
#define DRM_IOCTL_CONTROL DRM_IOW( 0x14, drm_control_t)
#define DRM_IOCTL_ADD_MAP DRM_IOWR(0x15, drm_map_t)
#define DRM_IOCTL_ADD_BUFS DRM_IOWR(0x16, drm_buf_desc_t)
#define DRM_IOCTL_MARK_BUFS DRM_IOW( 0x17, drm_buf_desc_t)
#define DRM_IOCTL_INFO_BUFS DRM_IOWR(0x18, drm_buf_info_t)
#define DRM_IOCTL_MAP_BUFS DRM_IOWR(0x19, drm_buf_map_t)
#define DRM_IOCTL_FREE_BUFS DRM_IOW( 0x1a, drm_buf_free_t)
#define DRM_IOCTL_ADD_CTX DRM_IOWR(0x20, drm_ctx_t)
#define DRM_IOCTL_RM_CTX DRM_IOWR(0x21, drm_ctx_t)
#define DRM_IOCTL_MOD_CTX DRM_IOW( 0x22, drm_ctx_t)
#define DRM_IOCTL_GET_CTX DRM_IOWR(0x23, drm_ctx_t)
#define DRM_IOCTL_SWITCH_CTX DRM_IOW( 0x24, drm_ctx_t)
#define DRM_IOCTL_NEW_CTX DRM_IOW( 0x25, drm_ctx_t)
#define DRM_IOCTL_RES_CTX DRM_IOWR(0x26, drm_ctx_res_t)
#define DRM_IOCTL_ADD_DRAW DRM_IOWR(0x27, drm_draw_t)
#define DRM_IOCTL_RM_DRAW DRM_IOWR(0x28, drm_draw_t)
#define DRM_IOCTL_DMA DRM_IOWR(0x29, drm_dma_t)
#define DRM_IOCTL_LOCK DRM_IOW( 0x2a, drm_lock_t)
#define DRM_IOCTL_UNLOCK DRM_IOW( 0x2b, drm_lock_t)
#define DRM_IOCTL_FINISH DRM_IOW( 0x2c, drm_lock_t)
#endif