/* xf86drm.h -- OS-independent header for DRM user-level library interface * Created: Tue Jan 5 08:17:23 1999 by faith@precisioninsight.com * * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * 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. * * Author: Rickard E. (Rik) Faith <faith@valinux.com> * * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/xf86drm.h,v 1.22 2003/06/12 14:12:35 eich Exp $ * */ #ifndef _XF86DRM_H_ #define _XF86DRM_H_ /* Defaults, if nothing set in xf86config */ #define DRM_DEV_UID 0 #define DRM_DEV_GID 0 /* Default /dev/dri directory permissions 0755 */ #define DRM_DEV_DIRMODE \ (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) #define DRM_DIR_NAME "/dev/dri" #define DRM_DEV_NAME "%s/card%d" #define DRM_PROC_NAME "/proc/dri/" /* For backware Linux compatibility */ #define DRM_ERR_NO_DEVICE (-1001) #define DRM_ERR_NO_ACCESS (-1002) #define DRM_ERR_NOT_ROOT (-1003) #define DRM_ERR_INVALID (-1004) #define DRM_ERR_NO_FD (-1005) #define DRM_AGP_NO_HANDLE 0 typedef unsigned long drmHandle, *drmHandlePtr; /* To mapped regions */ typedef unsigned int drmSize, *drmSizePtr; /* For mapped regions */ typedef void *drmAddress, **drmAddressPtr; /* For mapped regions */ typedef unsigned int drmContext, *drmContextPtr; /* GLXContext handle */ typedef unsigned int drmDrawable, *drmDrawablePtr; /* Unused */ typedef unsigned int drmMagic, *drmMagicPtr; /* Magic for auth */ typedef struct _drmVersion { int version_major; /* Major version */ int version_minor; /* Minor version */ int version_patchlevel; /* Patch level */ int name_len; /* Length of name buffer */ char *name; /* Name of driver */ int date_len; /* Length of date buffer */ char *date; /* User-space buffer to hold date */ int desc_len; /* Length of desc buffer */ char *desc; /* User-space buffer to hold desc */ } drmVersion, *drmVersionPtr; typedef struct _drmStats { unsigned long count; /* Number of data */ struct { unsigned long value; /* Value from kernel */ const char *long_format; /* Suggested format for long_name */ const char *long_name; /* Long name for value */ const char *rate_format; /* Suggested format for rate_name */ const char *rate_name; /* Short name for value per second */ int isvalue; /* True if value (vs. counter) */ const char *mult_names; /* Multiplier names (e.g., "KGM") */ int mult; /* Multiplier value (e.g., 1024) */ int verbose; /* Suggest only in verbose output */ } data[15]; } drmStatsT; /* All of these enums *MUST* match with the kernel implementation -- so do *NOT* change them! (The drmlib implementation will just copy the flags instead of translating them.) */ typedef enum { DRM_FRAME_BUFFER = 0, /* WC, no caching, no core dump */ DRM_REGISTERS = 1, /* no caching, no core dump */ DRM_SHM = 2, /* shared, cached */ DRM_AGP = 3, /* AGP/GART */ DRM_SCATTER_GATHER = 4 /* PCI scatter/gather */ } drmMapType; typedef enum { DRM_RESTRICTED = 0x0001, /* Cannot be mapped to client-virtual */ DRM_READ_ONLY = 0x0002, /* Read-only in client-virtual */ DRM_LOCKED = 0x0004, /* Physical pages locked */ DRM_KERNEL = 0x0008, /* Kernel requires access */ DRM_WRITE_COMBINING = 0x0010, /* Use write-combining, if available */ DRM_CONTAINS_LOCK = 0x0020, /* SHM page that contains lock */ DRM_REMOVABLE = 0x0040 /* Removable mapping */ } drmMapFlags; typedef enum { /* These values *MUST* match drm.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 */ } drmDMAFlags; typedef enum { DRM_PAGE_ALIGN = 0x01, DRM_AGP_BUFFER = 0x02, DRM_SG_BUFFER = 0x04 } drmBufDescFlags; typedef enum { 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 */ } drmLockFlags; typedef enum { DRM_CONTEXT_PRESERVED = 0x01, /* This context is preserved and never swapped. */ DRM_CONTEXT_2DONLY = 0x02 /* This context is for 2D rendering only. */ } drmContextFlags, *drmContextFlagsPtr; typedef struct _drmBufDesc { 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 */ } drmBufDesc, *drmBufDescPtr; typedef struct _drmBufInfo { int count; /* Number of buffers described in list */ drmBufDescPtr list; /* List of buffer descriptions */ } drmBufInfo, *drmBufInfoPtr; typedef struct _drmBuf { int idx; /* Index into master buflist */ int total; /* Buffer size */ int used; /* Amount of buffer in use (for DMA) */ drmAddress address; /* Address */ } drmBuf, *drmBufPtr; typedef struct _drmBufMap { int count; /* Number of buffers mapped */ drmBufPtr list; /* Buffers */ } drmBufMap, *drmBufMapPtr; typedef struct _drmLock { volatile unsigned int lock; char padding[60]; /* This is big enough for most current (and future?) architectures: DEC Alpha: 32 bytes Intel Merced: ? Intel P5/PPro/PII/PIII: 32 bytes Intel StrongARM: 32 bytes Intel i386/i486: 16 bytes MIPS: 32 bytes (?) Motorola 68k: 16 bytes Motorola PowerPC: 32 bytes Sun SPARC: 32 bytes */ } drmLock, *drmLockPtr; typedef struct _drmDMAReq { /* Indices here refer to the offset into list in drmBufInfo */ drmContext context; /* Context handle */ int send_count; /* Number of buffers to send */ int *send_list; /* List of handles to buffers */ int *send_sizes; /* Lengths of data to send, in bytes */ drmDMAFlags flags; /* Flags */ int request_count; /* Number of buffers requested */ int request_size; /* Desired size of buffers requested */ int *request_list; /* Buffer information */ int *request_sizes; /* Minimum acceptable sizes */ int granted_count; /* Number of buffers granted at this size */ } drmDMAReq, *drmDMAReqPtr; typedef struct _drmRegion { drmHandle handle; unsigned int offset; drmSize size; drmAddress map; } drmRegion, *drmRegionPtr; typedef struct _drmTextureRegion { unsigned char next; unsigned char prev; unsigned char in_use; unsigned char padding; /* Explicitly pad this out */ unsigned int age; } drmTextureRegion, *drmTextureRegionPtr; typedef struct _drmClipRect { unsigned short x1; /* Upper left: inclusive */ unsigned short y1; unsigned short x2; /* Lower right: exclusive */ unsigned short y2; } drmClipRect, *drmClipRectPtr; typedef enum { DRM_VBLANK_ABSOLUTE = 0x0, /* Wait for specific vblank sequence number */ DRM_VBLANK_RELATIVE = 0x1, /* Wait for given number of vblanks */ DRM_VBLANK_SIGNAL = 0x40000000 /* Send signal instead of blocking */ } drmVBlankSeqType; typedef struct _drmVBlankReq { drmVBlankSeqType type; unsigned int sequence; unsigned long signal; } drmVBlankReq, *drmVBlankReqPtr; typedef struct _drmVBlankReply { drmVBlankSeqType type; unsigned int sequence; long tval_sec; long tval_usec; } drmVBlankReply, *drmVBlankReplyPtr; typedef union _drmVBlank { drmVBlankReq request; drmVBlankReply reply; } drmVBlank, *drmVBlankPtr; #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock) #define DRM_LOCK_HELD 0x80000000 /* Hardware lock is held */ #define DRM_LOCK_CONT 0x40000000 /* Hardware lock is contended */ #if defined(__GNUC__) && (__GNUC__ >= 2) # if defined(__i386) || defined(__AMD64__) /* Reflect changes here to drmP.h */ #define DRM_CAS(lock,old,new,__ret) \ do { \ int __dummy; /* Can't mark eax as clobbered */ \ __asm__ __volatile__( \ "lock ; cmpxchg %4,%1\n\t" \ "setnz %0" \ : "=d" (__ret), \ "=m" (__drm_dummy_lock(lock)), \ "=a" (__dummy) \ : "2" (old), \ "r" (new)); \ } while (0) #elif defined(__alpha__) #define DRM_CAS(lock, old, new, ret) \ do { \ int old32; \ int cur32; \ __asm__ __volatile__( \ " mb\n" \ " zap %4, 0xF0, %0\n" \ " ldl_l %1, %2\n" \ " zap %1, 0xF0, %1\n" \ " cmpeq %0, %1, %1\n" \ " beq %1, 1f\n" \ " bis %5, %5, %1\n" \ " stl_c %1, %2\n" \ "1: xor %1, 1, %1\n" \ " stl %1, %3" \ : "+r" (old32), \ "+&r" (cur32), \ "=m" (__drm_dummy_lock(lock)),\ "=m" (ret) \ : "r" (old), \ "r" (new)); \ } while(0) #elif defined(__sparc__) #define DRM_CAS(lock,old,new,__ret) \ do { register unsigned int __old __asm("o0"); \ register unsigned int __new __asm("o1"); \ register volatile unsigned int *__lock __asm("o2"); \ __old = old; \ __new = new; \ __lock = (volatile unsigned int *)lock; \ __asm__ __volatile__( \ /*"cas [%2], %3, %0"*/ \ ".word 0xd3e29008\n\t" \ /*"membar #StoreStore | #StoreLoad"*/ \ ".word 0x8143e00a" \ : "=&r" (__new) \ : "0" (__new), \ "r" (__lock), \ "r" (__old) \ : "memory"); \ __ret = (__new != __old); \ } while(0) #elif defined(__ia64__) #if 0 /* this currently generates bad code (missing stop bits)... */ #include <ia64intrin.h> #define DRM_CAS(lock,old,new,__ret) \ do { \ __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \ (old), (new)) \ != (old)); \ } while (0) #else #define DRM_CAS(lock,old,new,__ret) \ do { \ unsigned int __result, __old = (old); \ __asm__ __volatile__( \ "mf\n" \ "mov ar.ccv=%2\n" \ ";;\n" \ "cmpxchg4.acq %0=%1,%3,ar.ccv" \ : "=r" (__result), "=m" (__drm_dummy_lock(lock)) \ : "r" (__old), "r" (new) \ : "memory"); \ __ret = (__result) != (__old); \ } while (0) #endif #elif defined(__powerpc__) #define DRM_CAS(lock,old,new,__ret) \ do { \ __asm__ __volatile__( \ "sync;" \ "0: lwarx %0,0,%1;" \ " xor. %0,%3,%0;" \ " bne 1f;" \ " stwcx. %2,0,%1;" \ " bne- 0b;" \ "1: " \ "sync;" \ : "=&r"(__ret) \ : "r"(lock), "r"(new), "r"(old) \ : "cr0", "memory"); \ } while (0) #endif /* architecture */ #endif /* __GNUC__ >= 2 */ #ifndef DRM_CAS #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */ #endif #if defined(__alpha__) || defined(__powerpc__) #define DRM_CAS_RESULT(_result) int _result #else #define DRM_CAS_RESULT(_result) char _result #endif #define DRM_LIGHT_LOCK(fd,lock,context) \ do { \ DRM_CAS_RESULT(__ret); \ DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \ if (__ret) drmGetLock(fd,context,0); \ } while(0) /* This one counts fast locks -- for benchmarking only. */ #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count) \ do { \ DRM_CAS_RESULT(__ret); \ DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \ if (__ret) drmGetLock(fd,context,0); \ else ++count; \ } while(0) #define DRM_LOCK(fd,lock,context,flags) \ do { \ if (flags) drmGetLock(fd,context,flags); \ else DRM_LIGHT_LOCK(fd,lock,context); \ } while(0) #define DRM_UNLOCK(fd,lock,context) \ do { \ DRM_CAS_RESULT(__ret); \ DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret); \ if (__ret) drmUnlock(fd,context); \ } while(0) /* Simple spin locks */ #define DRM_SPINLOCK(spin,val) \ do { \ DRM_CAS_RESULT(__ret); \ do { \ DRM_CAS(spin,0,val,__ret); \ if (__ret) while ((spin)->lock); \ } while (__ret); \ } while(0) #define DRM_SPINLOCK_TAKE(spin,val) \ do { \ DRM_CAS_RESULT(__ret); \ int cur; \ do { \ cur = (*spin).lock; \ DRM_CAS(spin,cur,val,__ret); \ } while (__ret); \ } while(0) #define DRM_SPINLOCK_COUNT(spin,val,count,__ret) \ do { \ int __i; \ __ret = 1; \ for (__i = 0; __ret && __i < count; __i++) { \ DRM_CAS(spin,0,val,__ret); \ if (__ret) for (;__i < count && (spin)->lock; __i++); \ } \ } while(0) #define DRM_SPINUNLOCK(spin,val) \ do { \ DRM_CAS_RESULT(__ret); \ if ((*spin).lock == val) { /* else server stole lock */ \ do { \ DRM_CAS(spin,val,0,__ret); \ } while (__ret); \ } \ } while(0) /* General user-level programmer's API: unprivileged */ extern int drmAvailable(void); extern int drmOpen(const char *name, const char *busid); extern int drmClose(int fd); extern drmVersionPtr drmGetVersion(int fd); extern drmVersionPtr drmGetLibVersion(int fd); extern void drmFreeVersion(drmVersionPtr); extern int drmGetMagic(int fd, drmMagicPtr magic); extern char *drmGetBusid(int fd); extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum, int funcnum); extern int drmGetMap(int fd, int idx, drmHandle *offset, drmSize *size, drmMapType *type, drmMapFlags *flags, drmHandle *handle, int *mtrr); extern int drmGetClient(int fd, int idx, int *auth, int *pid, int *uid, unsigned long *magic, unsigned long *iocs); extern int drmGetStats(int fd, drmStatsT *stats); extern int drmCommandNone(int fd, unsigned long drmCommandIndex); extern int drmCommandRead(int fd, unsigned long drmCommandIndex, void *data, unsigned long size); extern int drmCommandWrite(int fd, unsigned long drmCommandIndex, void *data, unsigned long size); extern int drmCommandWriteRead(int fd, unsigned long drmCommandIndex, void *data, unsigned long size); /* General user-level programmer's API: X server (root) only */ extern void drmFreeBusid(const char *busid); extern int drmSetBusid(int fd, const char *busid); extern int drmAuthMagic(int fd, drmMagic magic); extern int drmAddMap(int fd, drmHandle offset, drmSize size, drmMapType type, drmMapFlags flags, drmHandlePtr handle); extern int drmRmMap(int fd, drmHandle handle); extern int drmAddContextPrivateMapping(int fd, drmContext ctx_id, drmHandle handle); extern int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags, int agp_offset); extern int drmMarkBufs(int fd, double low, double high); extern int drmCreateContext(int fd, drmContextPtr handle); extern int drmSetContextFlags(int fd, drmContext context, drmContextFlags flags); extern int drmGetContextFlags(int fd, drmContext context, drmContextFlagsPtr flags); extern int drmAddContextTag(int fd, drmContext context, void *tag); extern int drmDelContextTag(int fd, drmContext context); extern void *drmGetContextTag(int fd, drmContext context); extern drmContextPtr drmGetReservedContextList(int fd, int *count); extern void drmFreeReservedContextList(drmContextPtr); extern int drmSwitchToContext(int fd, drmContext context); extern int drmDestroyContext(int fd, drmContext handle); extern int drmCreateDrawable(int fd, drmDrawablePtr handle); extern int drmDestroyDrawable(int fd, drmDrawable handle); extern int drmCtlInstHandler(int fd, int irq); extern int drmCtlUninstHandler(int fd); extern int drmInstallSIGIOHandler(int fd, void (*f)(int fd, void *oldctx, void *newctx)); extern int drmRemoveSIGIOHandler(int fd); /* General user-level programmer's API: authenticated client and/or X */ extern int drmMap(int fd, drmHandle handle, drmSize size, drmAddressPtr address); extern int drmUnmap(drmAddress address, drmSize size); extern drmBufInfoPtr drmGetBufInfo(int fd); extern drmBufMapPtr drmMapBufs(int fd); extern int drmUnmapBufs(drmBufMapPtr bufs); extern int drmDMA(int fd, drmDMAReqPtr request); extern int drmFreeBufs(int fd, int count, int *list); extern int drmGetLock(int fd, drmContext context, drmLockFlags flags); extern int drmUnlock(int fd, drmContext context); extern int drmFinish(int fd, int context, drmLockFlags flags); extern int drmGetContextPrivateMapping(int fd, drmContext ctx_id, drmHandlePtr handle); /* AGP/GART support: X server (root) only */ extern int drmAgpAcquire(int fd); extern int drmAgpRelease(int fd); extern int drmAgpEnable(int fd, unsigned long mode); extern int drmAgpAlloc(int fd, unsigned long size, unsigned long type, unsigned long *address, unsigned long *handle); extern int drmAgpFree(int fd, unsigned long handle); extern int drmAgpBind(int fd, unsigned long handle, unsigned long offset); extern int drmAgpUnbind(int fd, unsigned long handle); /* AGP/GART info: authenticated client and/or X */ extern int drmAgpVersionMajor(int fd); extern int drmAgpVersionMinor(int fd); extern unsigned long drmAgpGetMode(int fd); extern unsigned long drmAgpBase(int fd); /* Physical location */ extern unsigned long drmAgpSize(int fd); /* Bytes */ extern unsigned long drmAgpMemoryUsed(int fd); extern unsigned long drmAgpMemoryAvail(int fd); extern unsigned int drmAgpVendorId(int fd); extern unsigned int drmAgpDeviceId(int fd); /* PCI scatter/gather support: X server (root) only */ extern int drmScatterGatherAlloc(int fd, unsigned long size, unsigned long *handle); extern int drmScatterGatherFree(int fd, unsigned long handle); extern int drmWaitVBlank(int fd, drmVBlankPtr vbl); /* Support routines */ extern int drmError(int err, const char *label); extern void *drmMalloc(int size); extern void drmFree(void *pt); /* Hash table routines */ extern void *drmHashCreate(void); extern int drmHashDestroy(void *t); extern int drmHashLookup(void *t, unsigned long key, void **value); extern int drmHashInsert(void *t, unsigned long key, void *value); extern int drmHashDelete(void *t, unsigned long key); extern int drmHashFirst(void *t, unsigned long *key, void **value); extern int drmHashNext(void *t, unsigned long *key, void **value); /* PRNG routines */ extern void *drmRandomCreate(unsigned long seed); extern int drmRandomDestroy(void *state); extern unsigned long drmRandom(void *state); extern double drmRandomDouble(void *state); /* Skip list routines */ extern void *drmSLCreate(void); extern int drmSLDestroy(void *l); extern int drmSLLookup(void *l, unsigned long key, void **value); extern int drmSLInsert(void *l, unsigned long key, void *value); extern int drmSLDelete(void *l, unsigned long key); extern int drmSLNext(void *l, unsigned long *key, void **value); extern int drmSLFirst(void *l, unsigned long *key, void **value); extern void drmSLDump(void *l); extern int drmSLLookupNeighbors(void *l, unsigned long key, unsigned long *prev_key, void **prev_value, unsigned long *next_key, void **next_value); #endif