639 lines
25 KiB
C
639 lines
25 KiB
C
/**
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* \file xf86drm.h
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* OS-independent header for DRM user-level library interface.
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*
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* \author Rickard E. (Rik) Faith <faith@valinux.com>
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*/
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/*
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* Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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*/
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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/xf86drm.h,v 1.26 2003/08/16 19:26:37 dawes Exp $ */
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#ifndef _XF86DRM_H_
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#define _XF86DRM_H_
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#include <drm.h>
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/* Defaults, if nothing set in xf86config */
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#define DRM_DEV_UID 0
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#define DRM_DEV_GID 0
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/* Default /dev/dri directory permissions 0755 */
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#define DRM_DEV_DIRMODE \
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(S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
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#define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
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#define DRM_DIR_NAME "/dev/dri"
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#define DRM_DEV_NAME "%s/card%d"
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#define DRM_PROC_NAME "/proc/dri/" /* For backward Linux compatibility */
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#define DRM_ERR_NO_DEVICE (-1001)
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#define DRM_ERR_NO_ACCESS (-1002)
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#define DRM_ERR_NOT_ROOT (-1003)
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#define DRM_ERR_INVALID (-1004)
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#define DRM_ERR_NO_FD (-1005)
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#define DRM_AGP_NO_HANDLE 0
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typedef unsigned int drmSize, *drmSizePtr; /**< For mapped regions */
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typedef void *drmAddress, **drmAddressPtr; /**< For mapped regions */
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/**
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* Driver version information.
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*
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* \sa drmGetVersion() and drmSetVersion().
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*/
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typedef struct _drmVersion {
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int version_major; /**< Major version */
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int version_minor; /**< Minor version */
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int version_patchlevel; /**< Patch level */
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int name_len; /**< Length of name buffer */
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char *name; /**< Name of driver */
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int date_len; /**< Length of date buffer */
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char *date; /**< User-space buffer to hold date */
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int desc_len; /**< Length of desc buffer */
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char *desc; /**< User-space buffer to hold desc */
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} drmVersion, *drmVersionPtr;
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typedef struct _drmStats {
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unsigned long count; /**< Number of data */
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struct {
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unsigned long value; /**< Value from kernel */
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const char *long_format; /**< Suggested format for long_name */
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const char *long_name; /**< Long name for value */
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const char *rate_format; /**< Suggested format for rate_name */
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const char *rate_name; /**< Short name for value per second */
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int isvalue; /**< True if value (vs. counter) */
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const char *mult_names; /**< Multiplier names (e.g., "KGM") */
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int mult; /**< Multiplier value (e.g., 1024) */
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int verbose; /**< Suggest only in verbose output */
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} data[15];
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} drmStatsT;
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/* All of these enums *MUST* match with the
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kernel implementation -- so do *NOT*
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change them! (The drmlib implementation
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will just copy the flags instead of
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translating them.) */
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typedef enum {
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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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DRM_SHM = 2, /**< shared, cached */
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DRM_AGP = 3, /**< AGP/GART */
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DRM_SCATTER_GATHER = 4, /**< PCI scatter/gather */
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DRM_CONSISTENT = 5 /**< PCI consistent */
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} drmMapType;
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typedef enum {
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DRM_RESTRICTED = 0x0001, /**< Cannot be mapped to client-virtual */
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DRM_READ_ONLY = 0x0002, /**< Read-only in client-virtual */
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DRM_LOCKED = 0x0004, /**< Physical pages locked */
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DRM_KERNEL = 0x0008, /**< Kernel requires access */
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DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
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DRM_CONTAINS_LOCK = 0x0020, /**< SHM page that contains lock */
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DRM_REMOVABLE = 0x0040 /**< Removable mapping */
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} drmMapFlags;
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/**
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* \warning These values *MUST* match drm.h
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*/
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typedef enum {
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/** \name Flags for DMA buffer dispatch */
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/*@{*/
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DRM_DMA_BLOCK = 0x01, /**<
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* Block until buffer dispatched.
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*
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* \note the buffer may not yet have been
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* processed by the hardware -- getting a
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* hardware lock with the hardware quiescent
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* will ensure that the buffer has been
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* processed.
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*/
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DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
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DRM_DMA_PRIORITY = 0x04, /**< High priority dispatch */
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/*@}*/
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/** \name Flags for DMA buffer request */
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/*@{*/
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DRM_DMA_WAIT = 0x10, /**< Wait for free buffers */
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DRM_DMA_SMALLER_OK = 0x20, /**< Smaller-than-requested buffers OK */
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DRM_DMA_LARGER_OK = 0x40 /**< Larger-than-requested buffers OK */
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/*@}*/
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} drmDMAFlags;
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typedef enum {
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DRM_PAGE_ALIGN = 0x01,
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DRM_AGP_BUFFER = 0x02,
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DRM_SG_BUFFER = 0x04,
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DRM_FB_BUFFER = 0x08
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} drmBufDescFlags;
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typedef enum {
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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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DRM_LOCK_FLUSH = 0x04, /**< Flush this context's DMA queue first */
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DRM_LOCK_FLUSH_ALL = 0x08, /**< Flush all DMA queues first */
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/* These *HALT* flags aren't supported yet
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-- they will be used to support the
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full-screen DGA-like mode. */
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DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
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DRM_HALT_CUR_QUEUES = 0x20 /**< Halt all current queues */
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} drmLockFlags;
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typedef enum {
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DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
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never swapped. */
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DRM_CONTEXT_2DONLY = 0x02 /**< This context is for 2D rendering only. */
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} drm_context_tFlags, *drm_context_tFlagsPtr;
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typedef struct _drmBufDesc {
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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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int low_mark; /**< Low water mark */
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int high_mark; /**< High water mark */
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} drmBufDesc, *drmBufDescPtr;
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typedef struct _drmBufInfo {
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int count; /**< Number of buffers described in list */
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drmBufDescPtr list; /**< List of buffer descriptions */
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} drmBufInfo, *drmBufInfoPtr;
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typedef struct _drmBuf {
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int idx; /**< Index into the master buffer list */
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int total; /**< Buffer size */
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int used; /**< Amount of buffer in use (for DMA) */
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drmAddress address; /**< Address */
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} drmBuf, *drmBufPtr;
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/**
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* Buffer mapping information.
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*
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* Used by drmMapBufs() and drmUnmapBufs() to store information about the
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* mapped buffers.
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*/
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typedef struct _drmBufMap {
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int count; /**< Number of buffers mapped */
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drmBufPtr list; /**< Buffers */
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} drmBufMap, *drmBufMapPtr;
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typedef struct _drmLock {
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volatile unsigned int lock;
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char padding[60];
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/* This is big enough for most current (and future?) architectures:
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DEC Alpha: 32 bytes
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Intel Merced: ?
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Intel P5/PPro/PII/PIII: 32 bytes
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Intel StrongARM: 32 bytes
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Intel i386/i486: 16 bytes
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MIPS: 32 bytes (?)
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Motorola 68k: 16 bytes
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Motorola PowerPC: 32 bytes
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Sun SPARC: 32 bytes
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*/
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} drmLock, *drmLockPtr;
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/**
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* Indices here refer to the offset into
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* list in drmBufInfo
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*/
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typedef struct _drmDMAReq {
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drm_context_t context; /**< Context handle */
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int send_count; /**< Number of buffers to send */
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int *send_list; /**< List of handles to buffers */
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int *send_sizes; /**< Lengths of data to send, in bytes */
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drmDMAFlags flags; /**< Flags */
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int request_count; /**< Number of buffers requested */
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int request_size; /**< Desired size of buffers requested */
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int *request_list; /**< Buffer information */
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int *request_sizes; /**< Minimum acceptable sizes */
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int granted_count; /**< Number of buffers granted at this size */
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} drmDMAReq, *drmDMAReqPtr;
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typedef struct _drmRegion {
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drm_handle_t handle;
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unsigned int offset;
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drmSize size;
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drmAddress map;
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} drmRegion, *drmRegionPtr;
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typedef struct _drmTextureRegion {
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unsigned char next;
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unsigned char prev;
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unsigned char in_use;
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unsigned char padding; /**< Explicitly pad this out */
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unsigned int age;
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} drmTextureRegion, *drmTextureRegionPtr;
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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 = 0x40000000 /* Send signal instead of blocking */
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} drmVBlankSeqType;
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typedef struct _drmVBlankReq {
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drmVBlankSeqType type;
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unsigned int sequence;
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unsigned long signal;
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} drmVBlankReq, *drmVBlankReqPtr;
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typedef struct _drmVBlankReply {
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drmVBlankSeqType type;
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unsigned int sequence;
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long tval_sec;
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long tval_usec;
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} drmVBlankReply, *drmVBlankReplyPtr;
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typedef union _drmVBlank {
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drmVBlankReq request;
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drmVBlankReply reply;
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} drmVBlank, *drmVBlankPtr;
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typedef struct _drmSetVersion {
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int drm_di_major;
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int drm_di_minor;
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int drm_dd_major;
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int drm_dd_minor;
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} drmSetVersion, *drmSetVersionPtr;
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#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
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#define DRM_LOCK_HELD 0x80000000U /**< Hardware lock is held */
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#define DRM_LOCK_CONT 0x40000000U /**< Hardware lock is contended */
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#if defined(__GNUC__) && (__GNUC__ >= 2)
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# if defined(__i386) || defined(__AMD64__)
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/* Reflect changes here to drmP.h */
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#define DRM_CAS(lock,old,new,__ret) \
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do { \
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int __dummy; /* Can't mark eax as clobbered */ \
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__asm__ __volatile__( \
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"lock ; cmpxchg %4,%1\n\t" \
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"setnz %0" \
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: "=d" (__ret), \
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"=m" (__drm_dummy_lock(lock)), \
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"=a" (__dummy) \
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: "2" (old), \
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"r" (new)); \
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} while (0)
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#elif defined(__alpha__)
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#define DRM_CAS(lock, old, new, ret) \
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do { \
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int old32; \
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int cur32; \
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__asm__ __volatile__( \
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" mb\n" \
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" zap %4, 0xF0, %0\n" \
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" ldl_l %1, %2\n" \
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" zap %1, 0xF0, %1\n" \
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" cmpeq %0, %1, %1\n" \
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" beq %1, 1f\n" \
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" bis %5, %5, %1\n" \
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" stl_c %1, %2\n" \
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"1: xor %1, 1, %1\n" \
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" stl %1, %3" \
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: "+r" (old32), \
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"+&r" (cur32), \
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"=m" (__drm_dummy_lock(lock)),\
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"=m" (ret) \
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: "r" (old), \
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"r" (new)); \
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} while(0)
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#elif defined(__sparc__)
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#define DRM_CAS(lock,old,new,__ret) \
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do { register unsigned int __old __asm("o0"); \
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register unsigned int __new __asm("o1"); \
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register volatile unsigned int *__lock __asm("o2"); \
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__old = old; \
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__new = new; \
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__lock = (volatile unsigned int *)lock; \
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__asm__ __volatile__( \
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/*"cas [%2], %3, %0"*/ \
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".word 0xd3e29008\n\t" \
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/*"membar #StoreStore | #StoreLoad"*/ \
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".word 0x8143e00a" \
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: "=&r" (__new) \
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: "0" (__new), \
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"r" (__lock), \
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"r" (__old) \
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: "memory"); \
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__ret = (__new != __old); \
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} while(0)
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#elif defined(__ia64__)
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#ifdef __INTEL_COMPILER
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/* this currently generates bad code (missing stop bits)... */
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#include <ia64intrin.h>
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#define DRM_CAS(lock,old,new,__ret) \
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do { \
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unsigned long __result, __old = (old) & 0xffffffff; \
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__mf(); \
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__result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
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__ret = (__result) != (__old); \
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/* __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
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(old), (new)) \
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!= (old)); */\
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} while (0)
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#else
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#define DRM_CAS(lock,old,new,__ret) \
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do { \
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unsigned int __result, __old = (old); \
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__asm__ __volatile__( \
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"mf\n" \
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"mov ar.ccv=%2\n" \
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";;\n" \
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"cmpxchg4.acq %0=%1,%3,ar.ccv" \
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: "=r" (__result), "=m" (__drm_dummy_lock(lock)) \
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: "r" ((unsigned long)__old), "r" (new) \
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: "memory"); \
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__ret = (__result) != (__old); \
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} while (0)
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#endif
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#elif defined(__powerpc__)
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#define DRM_CAS(lock,old,new,__ret) \
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do { \
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__asm__ __volatile__( \
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"sync;" \
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"0: lwarx %0,0,%1;" \
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" xor. %0,%3,%0;" \
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" bne 1f;" \
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" stwcx. %2,0,%1;" \
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" bne- 0b;" \
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"1: " \
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"sync;" \
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: "=&r"(__ret) \
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: "r"(lock), "r"(new), "r"(old) \
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: "cr0", "memory"); \
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} while (0)
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#endif /* architecture */
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#endif /* __GNUC__ >= 2 */
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#ifndef DRM_CAS
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#define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
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#endif
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#if defined(__alpha__) || defined(__powerpc__)
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#define DRM_CAS_RESULT(_result) int _result
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#else
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#define DRM_CAS_RESULT(_result) char _result
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#endif
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#define DRM_LIGHT_LOCK(fd,lock,context) \
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do { \
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DRM_CAS_RESULT(__ret); \
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DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
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if (__ret) drmGetLock(fd,context,0); \
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} while(0)
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/* This one counts fast locks -- for
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benchmarking only. */
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#define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count) \
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do { \
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DRM_CAS_RESULT(__ret); \
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DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
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if (__ret) drmGetLock(fd,context,0); \
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else ++count; \
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} while(0)
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#define DRM_LOCK(fd,lock,context,flags) \
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do { \
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if (flags) drmGetLock(fd,context,flags); \
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else DRM_LIGHT_LOCK(fd,lock,context); \
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} while(0)
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#define DRM_UNLOCK(fd,lock,context) \
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do { \
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DRM_CAS_RESULT(__ret); \
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DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret); \
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if (__ret) drmUnlock(fd,context); \
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} while(0)
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/* Simple spin locks */
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#define DRM_SPINLOCK(spin,val) \
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do { \
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DRM_CAS_RESULT(__ret); \
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do { \
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DRM_CAS(spin,0,val,__ret); \
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if (__ret) while ((spin)->lock); \
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} while (__ret); \
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} while(0)
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#define DRM_SPINLOCK_TAKE(spin,val) \
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do { \
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DRM_CAS_RESULT(__ret); \
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int cur; \
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do { \
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cur = (*spin).lock; \
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DRM_CAS(spin,cur,val,__ret); \
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} while (__ret); \
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} while(0)
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#define DRM_SPINLOCK_COUNT(spin,val,count,__ret) \
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do { \
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int __i; \
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__ret = 1; \
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for (__i = 0; __ret && __i < count; __i++) { \
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DRM_CAS(spin,0,val,__ret); \
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if (__ret) for (;__i < count && (spin)->lock; __i++); \
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} \
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} while(0)
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#define DRM_SPINUNLOCK(spin,val) \
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do { \
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DRM_CAS_RESULT(__ret); \
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if ((*spin).lock == val) { /* else server stole lock */ \
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do { \
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DRM_CAS(spin,val,0,__ret); \
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} while (__ret); \
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} \
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} while(0)
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/* General user-level programmer's API: unprivileged */
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extern int drmAvailable(void);
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extern int drmOpen(const char *name, const char *busid);
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extern int drmClose(int fd);
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extern drmVersionPtr drmGetVersion(int fd);
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extern drmVersionPtr drmGetLibVersion(int fd);
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extern void drmFreeVersion(drmVersionPtr);
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extern int drmGetMagic(int fd, drm_magic_t * magic);
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extern char *drmGetBusid(int fd);
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extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum,
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int funcnum);
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extern int drmGetMap(int fd, int idx, drm_handle_t *offset,
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drmSize *size, drmMapType *type,
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drmMapFlags *flags, drm_handle_t *handle,
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int *mtrr);
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extern int drmGetClient(int fd, int idx, int *auth, int *pid,
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int *uid, unsigned long *magic,
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unsigned long *iocs);
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extern int drmGetStats(int fd, drmStatsT *stats);
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extern int drmSetInterfaceVersion(int fd, drmSetVersion *version);
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extern int drmCommandNone(int fd, unsigned long drmCommandIndex);
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extern int drmCommandRead(int fd, unsigned long drmCommandIndex,
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void *data, unsigned long size);
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extern int drmCommandWrite(int fd, unsigned long drmCommandIndex,
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void *data, unsigned long size);
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extern int drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
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void *data, unsigned long size);
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/* General user-level programmer's API: X server (root) only */
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extern void drmFreeBusid(const char *busid);
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extern int drmSetBusid(int fd, const char *busid);
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extern int drmAuthMagic(int fd, drm_magic_t magic);
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extern int drmAddMap(int fd,
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drm_handle_t offset,
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drmSize size,
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drmMapType type,
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drmMapFlags flags,
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drm_handle_t * handle);
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extern int drmRmMap(int fd, drm_handle_t handle);
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extern int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
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drm_handle_t handle);
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extern int drmAddBufs(int fd, int count, int size,
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drmBufDescFlags flags,
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int agp_offset);
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extern int drmMarkBufs(int fd, double low, double high);
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extern int drmCreateContext(int fd, drm_context_t * handle);
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extern int drmSetContextFlags(int fd, drm_context_t context,
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drm_context_tFlags flags);
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extern int drmGetContextFlags(int fd, drm_context_t context,
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drm_context_tFlagsPtr flags);
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extern int drmAddContextTag(int fd, drm_context_t context, void *tag);
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extern int drmDelContextTag(int fd, drm_context_t context);
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extern void *drmGetContextTag(int fd, drm_context_t context);
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extern drm_context_t * drmGetReservedContextList(int fd, int *count);
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extern void drmFreeReservedContextList(drm_context_t *);
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extern int drmSwitchToContext(int fd, drm_context_t context);
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extern int drmDestroyContext(int fd, drm_context_t handle);
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extern int drmCreateDrawable(int fd, drm_drawable_t * handle);
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extern int drmDestroyDrawable(int fd, drm_drawable_t handle);
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extern int drmCtlInstHandler(int fd, int irq);
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extern int drmCtlUninstHandler(int fd);
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extern int drmInstallSIGIOHandler(int fd,
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void (*f)(int fd,
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void *oldctx,
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void *newctx));
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extern int drmRemoveSIGIOHandler(int fd);
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/* General user-level programmer's API: authenticated client and/or X */
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extern int drmMap(int fd,
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drm_handle_t handle,
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drmSize size,
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drmAddressPtr address);
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extern int drmUnmap(drmAddress address, drmSize size);
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extern drmBufInfoPtr drmGetBufInfo(int fd);
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extern drmBufMapPtr drmMapBufs(int fd);
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extern int drmUnmapBufs(drmBufMapPtr bufs);
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extern int drmDMA(int fd, drmDMAReqPtr request);
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extern int drmFreeBufs(int fd, int count, int *list);
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extern int drmGetLock(int fd,
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drm_context_t context,
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drmLockFlags flags);
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extern int drmUnlock(int fd, drm_context_t context);
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extern int drmFinish(int fd, int context, drmLockFlags flags);
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extern int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
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drm_handle_t * handle);
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/* AGP/GART support: X server (root) only */
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extern int drmAgpAcquire(int fd);
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extern int drmAgpRelease(int fd);
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extern int drmAgpEnable(int fd, unsigned long mode);
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extern int drmAgpAlloc(int fd, unsigned long size,
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unsigned long type, unsigned long *address,
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unsigned long *handle);
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extern int drmAgpFree(int fd, unsigned long handle);
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extern int drmAgpBind(int fd, unsigned long handle,
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unsigned long offset);
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extern int drmAgpUnbind(int fd, unsigned long handle);
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/* AGP/GART info: authenticated client and/or X */
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extern int drmAgpVersionMajor(int fd);
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extern int drmAgpVersionMinor(int fd);
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extern unsigned long drmAgpGetMode(int fd);
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extern unsigned long drmAgpBase(int fd); /* Physical location */
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extern unsigned long drmAgpSize(int fd); /* Bytes */
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extern unsigned long drmAgpMemoryUsed(int fd);
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extern unsigned long drmAgpMemoryAvail(int fd);
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extern unsigned int drmAgpVendorId(int fd);
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extern unsigned int drmAgpDeviceId(int fd);
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/* PCI scatter/gather support: X server (root) only */
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extern int drmScatterGatherAlloc(int fd, unsigned long size,
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unsigned long *handle);
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extern int drmScatterGatherFree(int fd, unsigned long handle);
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extern int drmWaitVBlank(int fd, drmVBlankPtr vbl);
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/* Support routines */
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extern int drmError(int err, const char *label);
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extern void *drmMalloc(int size);
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extern void drmFree(void *pt);
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/* Hash table routines */
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extern void *drmHashCreate(void);
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extern int drmHashDestroy(void *t);
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extern int drmHashLookup(void *t, unsigned long key, void **value);
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extern int drmHashInsert(void *t, unsigned long key, void *value);
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extern int drmHashDelete(void *t, unsigned long key);
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extern int drmHashFirst(void *t, unsigned long *key, void **value);
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extern int drmHashNext(void *t, unsigned long *key, void **value);
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/* PRNG routines */
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extern void *drmRandomCreate(unsigned long seed);
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extern int drmRandomDestroy(void *state);
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extern unsigned long drmRandom(void *state);
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extern double drmRandomDouble(void *state);
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/* Skip list routines */
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extern void *drmSLCreate(void);
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extern int drmSLDestroy(void *l);
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extern int drmSLLookup(void *l, unsigned long key, void **value);
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extern int drmSLInsert(void *l, unsigned long key, void *value);
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extern int drmSLDelete(void *l, unsigned long key);
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extern int drmSLNext(void *l, unsigned long *key, void **value);
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extern int drmSLFirst(void *l, unsigned long *key, void **value);
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extern void drmSLDump(void *l);
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extern int drmSLLookupNeighbors(void *l, unsigned long key,
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unsigned long *prev_key, void **prev_value,
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unsigned long *next_key, void **next_value);
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#endif
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