/* drm.h -- Header for Direct Rendering Manager -*- linux-c -*- * Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com * Revised: Fri Aug 20 13:08:18 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/generic/drm.h,v 1.46 1999/08/20 20:00:53 faith Exp $ * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/generic/drm.h,v 1.2 1999/06/27 14:08:21 dawes Exp $ * */ #ifndef _DRM_H_ #define _DRM_H_ #include /* 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