renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

Age	Commit message (Expand)	Author
2007-01-30	Add the ttmtest test utility.	Thomas Hellstrom

/* drm_drv.h -- Generic driver template -*- linux-c -*- * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.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 * VA LINUX SYSTEMS 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. * * Authors: * Rickard E. (Rik) Faith <faith@valinux.com> * Gareth Hughes <gareth@valinux.com> */ /* * To use this template, you must at least define the following (samples * given for the MGA driver): * * #define DRIVER_AUTHOR "VA Linux Systems, Inc." * * #define DRIVER_NAME "mga" * #define DRIVER_DESC "Matrox G200/G400" * #define DRIVER_DATE "20001127" * * #define DRIVER_MAJOR 2 * #define DRIVER_MINOR 0 * #define DRIVER_PATCHLEVEL 2 * * #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( mga_ioctls ) * * #define DRM(x) mga_##x */ #ifndef __MUST_HAVE_AGP #define __MUST_HAVE_AGP 0 #endif #ifndef __HAVE_CTX_BITMAP #define __HAVE_CTX_BITMAP 0 #endif #ifndef __HAVE_DMA_IRQ #define __HAVE_DMA_IRQ 0 #endif #ifndef __HAVE_DMA_QUEUE #define __HAVE_DMA_QUEUE 0 #endif #ifndef __HAVE_MULTIPLE_DMA_QUEUES #define __HAVE_MULTIPLE_DMA_QUEUES 0 #endif #ifndef __HAVE_DMA_SCHEDULE #define __HAVE_DMA_SCHEDULE 0 #endif #ifndef __HAVE_DMA_FLUSH #define __HAVE_DMA_FLUSH 0 #endif #ifndef __HAVE_DMA_READY #define __HAVE_DMA_READY 0 #endif #ifndef __HAVE_DMA_QUIESCENT #define __HAVE_DMA_QUIESCENT 0 #endif #ifndef __HAVE_RELEASE #define __HAVE_RELEASE 0 #endif #ifndef __HAVE_COUNTERS #define __HAVE_COUNTERS 0 #endif #ifndef __HAVE_SG #define __HAVE_SG 0 #endif #ifndef DRIVER_PREINIT #define DRIVER_PREINIT() #endif #ifndef DRIVER_POSTINIT #define DRIVER_POSTINIT() #endif #ifndef DRIVER_PRERELEASE #define DRIVER_PRERELEASE() #endif #ifndef DRIVER_PRETAKEDOWN #define DRIVER_PRETAKEDOWN() #endif #ifndef DRIVER_IOCTLS #define DRIVER_IOCTLS #endif static drm_device_t DRM(device); static int DRM(minor); static struct file_operations DRM(fops) = { #if LINUX_VERSION_CODE >= 0x020400 /* This started being used during 2.4.0-test */ owner: THIS_MODULE, #endif open: DRM(open), flush: DRM(flush), release: DRM(release), ioctl: DRM(ioctl), mmap: DRM(mmap), read: DRM(read), fasync: DRM(fasync), poll: DRM(poll), }; static drm_ioctl_desc_t DRM(ioctls)[] = { [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { DRM(version), 0, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { DRM(getunique), 0, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { DRM(getmagic), 0, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { DRM(irq_busid), 0, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = { DRM(getmap), 0, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = { DRM(getclient), 0, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = { DRM(getstats), 0, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { DRM(setunique), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { DRM(block), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { DRM(unblock), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { DRM(authmagic), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { DRM(addmap), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = { DRM(rmmap), 1, 0 }, #if __HAVE_CTX_BITMAP [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { DRM(setsareactx), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { DRM(getsareactx), 1, 0 }, #endif [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { DRM(addctx), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { DRM(rmctx), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { DRM(modctx), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { DRM(getctx), 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { DRM(switchctx), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { DRM(newctx), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { DRM(resctx), 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { DRM(adddraw), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { DRM(rmdraw), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { DRM(lock), 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { DRM(unlock), 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { DRM(finish), 1, 0 }, #if __HAVE_DMA [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = { DRM(addbufs), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { DRM(markbufs), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { DRM(infobufs), 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { DRM(mapbufs), 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { DRM(freebufs), 1, 0 }, /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ #if __HAVE_DMA_IRQ [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { DRM(control), 1, 1 }, #endif #endif #if __REALLY_HAVE_AGP [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = { DRM(agp_acquire), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = { DRM(agp_release), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = { DRM(agp_enable), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = { DRM(agp_info), 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = { DRM(agp_alloc), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = { DRM(agp_free), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = { DRM(agp_bind), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = { DRM(agp_unbind), 1, 1 }, #endif #if __HAVE_SG [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = { DRM(sg_alloc), 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = { DRM(sg_free), 1, 1 }, #endif DRIVER_IOCTLS }; #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( DRM(ioctls) ) #ifdef MODULE static char *drm_opts = NULL; #endif MODULE_AUTHOR( DRIVER_AUTHOR ); MODULE_DESCRIPTION( DRIVER_DESC ); MODULE_PARM( drm_opts, "s" ); #ifndef MODULE /* DRM(options) is called by the kernel to parse command-line options * passed via the boot-loader (e.g., LILO). It calls the insmod option * routine, drm_parse_drm. */ static int __init DRM(options)( char *str ) { DRM(parse_options)( str ); return 1; } __setup( DRIVER_NAME "=", DRM(options) ); #endif static int DRM(setup)( drm_device_t *dev ) { int i; atomic_set( &dev->ioctl_count, 0 ); atomic_set( &dev->vma_count, 0 ); dev->buf_use = 0; atomic_set( &dev->buf_alloc, 0 ); #if __HAVE_DMA i = DRM(dma_setup)( dev ); if ( i < 0 ) return i; #endif dev->counters = 6 + __HAVE_COUNTERS; dev->types[0] = _DRM_STAT_LOCK; dev->types[1] = _DRM_STAT_OPENS; dev->types[2] = _DRM_STAT_CLOSES; dev->types[3] = _DRM_STAT_IOCTLS; dev->types[4] = _DRM_STAT_LOCKS; dev->types[5] = _DRM_STAT_UNLOCKS; #ifdef __HAVE_COUNTER6 dev->types[6] = __HAVE_COUNTER6; #endif #ifdef __HAVE_COUNTER7 dev->types[7] = __HAVE_COUNTER7; #endif #ifdef __HAVE_COUNTER8 dev->types[8] = __HAVE_COUNTER8; #endif #ifdef __HAVE_COUNTER9 dev->types[9] = __HAVE_COUNTER9; #endif #ifdef __HAVE_COUNTER10 dev->types[10] = __HAVE_COUNTER10; #endif #ifdef __HAVE_COUNTER11 dev->types[11] = __HAVE_COUNTER11; #endif #ifdef __HAVE_COUNTER12 dev->types[12] = __HAVE_COUNTER12; #endif #ifdef __HAVE_COUNTER13 dev->types[13] = __HAVE_COUNTER13; #endif #ifdef __HAVE_COUNTER14 dev->types[14] = __HAVE_COUNTER14; #endif #ifdef __HAVE_COUNTER15 dev->types[14] = __HAVE_COUNTER14; #endif for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ ) atomic_set( &dev->counts[i], 0 ); for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) { dev->magiclist[i].head = NULL; dev->magiclist[i].tail = NULL; } dev->maplist = DRM(alloc)(sizeof(*dev->maplist), DRM_MEM_MAPS); if(dev->maplist == NULL) return -ENOMEM; memset(dev->maplist, 0, sizeof(*dev->maplist)); INIT_LIST_HEAD(&dev->maplist->head); dev->map_count = 0; dev->vmalist = NULL; dev->lock.hw_lock = NULL; init_waitqueue_head( &dev->lock.lock_queue ); dev->queue_count = 0; dev->queue_reserved = 0; dev->queue_slots = 0; dev->queuelist = NULL; dev->irq = 0; dev->context_flag = 0; dev->interrupt_flag = 0; dev->dma_flag = 0; dev->last_context = 0; dev->last_switch = 0; dev->last_checked = 0; init_timer( &dev->timer ); init_waitqueue_head( &dev->context_wait ); dev->ctx_start = 0; dev->lck_start = 0; dev->buf_rp = dev->buf; dev->buf_wp = dev->buf; dev->buf_end = dev->buf + DRM_BSZ; dev->buf_async = NULL; init_waitqueue_head( &dev->buf_readers ); init_waitqueue_head( &dev->buf_writers ); DRM_DEBUG( "\n" ); /* The kernel's context could be created here, but is now created * in drm_dma_enqueue. This is more resource-efficient for * hardware that does not do DMA, but may mean that * drm_select_queue fails between the time the interrupt is * initialized and the time the queues are initialized. */ return 0; } static int DRM(takedown)( drm_device_t *dev ) { drm_magic_entry_t *pt, *next; drm_map_t *map; drm_map_list_t *r_list; struct list_head *list; drm_vma_entry_t *vma, *vma_next; int i; DRM_DEBUG( "\n" ); DRIVER_PRETAKEDOWN(); #if __HAVE_DMA_IRQ if ( dev->irq ) DRM(irq_uninstall)( dev ); #endif down( &dev->struct_sem ); del_timer( &dev->timer ); if ( dev->devname ) { DRM(free)( dev->devname, strlen( dev->devname ) + 1, DRM_MEM_DRIVER ); dev->devname = NULL; } if ( dev->unique ) { DRM(free)( dev->unique, strlen( dev->unique ) + 1, DRM_MEM_DRIVER ); dev->unique = NULL; dev->unique_len = 0; } /* Clear pid list */ for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) { for ( pt = dev->magiclist[i].head ; pt ; pt = next ) { next = pt->next; DRM(free)( pt, sizeof(*pt), DRM_MEM_MAGIC ); } dev->magiclist[i].head = dev->magiclist[i].tail = NULL; } #if __REALLY_HAVE_AGP /* Clear AGP information */ if ( dev->agp ) { drm_agp_mem_t *entry; drm_agp_mem_t *nexte; /* Remove AGP resources, but leave dev->agp intact until drv_cleanup is called. */ for ( entry = dev->agp->memory ; entry ; entry = nexte ) { nexte = entry->next; if ( entry->bound ) DRM(unbind_agp)( entry->memory ); DRM(free_agp)( entry->memory, entry->pages ); DRM(free)( entry, sizeof(*entry), DRM_MEM_AGPLISTS ); } dev->agp->memory = NULL; if ( dev->agp->acquired ) DRM(agp_do_release)(); dev->agp->acquired = 0; dev->agp->enabled = 0; } #endif /* Clear vma list (only built for debugging) */ if ( dev->vmalist ) { for ( vma = dev->vmalist ; vma ; vma = vma_next ) { vma_next = vma->next; DRM(free)( vma, sizeof(*vma), DRM_MEM_VMAS ); } dev->vmalist = NULL; } if( dev->maplist ) { list_for_each(list, &dev->maplist->head) { r_list = (drm_map_list_t *)list; map = r_list->map; DRM(free)(r_list, sizeof(*r_list), DRM_MEM_MAPS); if(!map) continue; switch ( map->type ) { case _DRM_REGISTERS: case _DRM_FRAME_BUFFER: #if __REALLY_HAVE_MTRR if ( map->mtrr >= 0 ) { int retcode; retcode = mtrr_del( map->mtrr, map->offset, map->size ); DRM_DEBUG( "mtrr_del=%d\n", retcode ); } #endif DRM(ioremapfree)( map->handle, map->size ); break; case _DRM_SHM: vfree(map->handle); break; case _DRM_AGP: /* Do nothing here, because this is all * handled in the AGP/GART driver. */ break; case _DRM_SCATTER_GATHER: /* Handle it, but do nothing, if HAVE_SG * isn't defined. */ #if __HAVE_SG if(dev->sg) { DRM(sg_cleanup)(dev->sg); dev->sg = NULL; } #endif break; } DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); } DRM(free)(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); dev->maplist = NULL; } #if __HAVE_DMA_QUEUE || __HAVE_MULTIPLE_DMA_QUEUES if ( dev->queuelist ) { for ( i = 0 ; i < dev->queue_count ; i++ ) { DRM(waitlist_destroy)( &dev->queuelist[i]->waitlist ); if ( dev->queuelist[i] ) { DRM(free)( dev->queuelist[i], sizeof(*dev->queuelist[0]), DRM_MEM_QUEUES ); dev->queuelist[i] = NULL; } } DRM(free)( dev->queuelist, dev->queue_slots * sizeof(*dev->queuelist), DRM_MEM_QUEUES ); dev->queuelist = NULL; } dev->queue_count = 0; #endif #if __HAVE_DMA DRM(dma_takedown)( dev ); #endif if ( dev->lock.hw_lock ) { dev->lock.hw_lock = NULL; /* SHM removed */ dev->lock.pid = 0; wake_up_interruptible( &dev->lock.lock_queue ); } up( &dev->struct_sem ); return 0; } /* drm_init is called via init_module at module load time, or via * linux/init/main.c (this is not currently supported). */ static int __init drm_init( void ) { drm_device_t *dev = &DRM(device); #if __HAVE_CTX_BITMAP int retcode; #endif DRM_DEBUG( "\n" ); memset( (void *)dev, 0, sizeof(*dev) ); dev->count_lock = SPIN_LOCK_UNLOCKED; sema_init( &dev->struct_sem, 1 ); #ifdef MODULE DRM(parse_options)( drm_opts ); #endif DRIVER_PREINIT(); DRM(mem_init)(); if ((DRM(minor) = DRM(stub_register)(DRIVER_NAME, &DRM(fops),dev)) < 0) return -EPERM; dev->device = MKDEV(DRM_MAJOR, DRM(minor) ); dev->name = DRIVER_NAME; #if __REALLY_HAVE_AGP dev->agp = DRM(agp_init)(); #if __MUST_HAVE_AGP if ( dev->agp == NULL ) { DRM_ERROR( "Cannot initialize the agpgart module.\n" ); DRM(stub_unregister)(DRM(minor)); DRM(takedown)( dev ); return -ENOMEM; } #endif #if __REALLY_HAVE_MTRR if (dev->agp) dev->agp->agp_mtrr = mtrr_add( dev->agp->agp_info.aper_base, dev->agp->agp_info.aper_size*1024*1024, MTRR_TYPE_WRCOMB, 1 ); #endif #endif #if __HAVE_CTX_BITMAP retcode = DRM(ctxbitmap_init)( dev ); if( retcode ) { DRM_ERROR( "Cannot allocate memory for context bitmap.\n" ); DRM(stub_unregister)(DRM(minor)); DRM(takedown)( dev ); return retcode; } #endif DRIVER_POSTINIT(); DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n", DRIVER_NAME, DRIVER_MAJOR, DRIVER_MINOR, DRIVER_PATCHLEVEL, DRIVER_DATE, DRM(minor) ); return 0; } /* drm_cleanup is called via cleanup_module at module unload time. */ static void __exit drm_cleanup( void ) { drm_device_t *dev = &DRM(device); DRM_DEBUG( "\n" ); if ( DRM(stub_unregister)(DRM(minor)) ) { DRM_ERROR( "Cannot unload module\n" ); } else { DRM_INFO( "Module unloaded\n" ); } #if __HAVE_CTX_BITMAP DRM(ctxbitmap_cleanup)( dev ); #endif #if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR if ( dev->agp && dev->agp->agp_mtrr ) { int retval; retval = mtrr_del( dev->agp->agp_mtrr, dev->agp->agp_info.aper_base, dev->agp->agp_info.aper_size*1024*1024 ); DRM_DEBUG( "mtrr_del=%d\n", retval ); } #endif DRM(takedown)( dev ); #if __REALLY_HAVE_AGP if ( dev->agp ) { DRM(agp_uninit)(); DRM(free)( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS ); dev->agp = NULL; } #endif } module_init( drm_init ); module_exit( drm_cleanup ); int DRM(version)( struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg ) { drm_version_t version; int len; if ( copy_from_user( &version, (drm_version_t *)arg, sizeof(version) ) ) return -EFAULT; #define DRM_COPY( name, value ) \ len = strlen( value ); \ if ( len > name##_len ) len = name##_len; \ name##_len = strlen( value ); \ if ( len && name ) { \ if ( copy_to_user( name, value, len ) ) \ return -EFAULT; \ } version.version_major = DRIVER_MAJOR; version.version_minor = DRIVER_MINOR; version.version_patchlevel = DRIVER_PATCHLEVEL; DRM_COPY( version.name, DRIVER_NAME ); DRM_COPY( version.date, DRIVER_DATE ); DRM_COPY( version.desc, DRIVER_DESC ); if ( copy_to_user( (drm_version_t *)arg, &version, sizeof(version) ) ) return -EFAULT; return 0; } int DRM(open)( struct inode *inode, struct file *filp ) { drm_device_t *dev = &DRM(device); int retcode = 0; DRM_DEBUG( "open_count = %d\n", dev->open_count ); retcode = DRM(open_helper)( inode, filp, dev ); if ( !retcode ) { #if LINUX_VERSION_CODE < 0x020333 MOD_INC_USE_COUNT; /* Needed before Linux 2.3.51 */ #endif atomic_inc( &dev->counts[_DRM_STAT_OPENS] ); spin_lock( &dev->count_lock ); if ( !dev->open_count++ ) { spin_unlock( &dev->count_lock ); return DRM(setup)( dev ); } spin_unlock( &dev->count_lock ); } return retcode; } int DRM(release)( struct inode *inode, struct file *filp ) { drm_file_t *priv = filp->private_data; drm_device_t *dev; int retcode = 0; lock_kernel(); dev = priv->dev; DRM_DEBUG( "open_count = %d\n", dev->open_count ); DRIVER_PRERELEASE(); /* ======================================================== * Begin inline drm_release */ DRM_DEBUG( "pid = %d, device = 0x%x, open_count = %d\n", current->pid, dev->device, dev->open_count ); if ( dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) && dev->lock.pid == current->pid ) { DRM_DEBUG( "Process %d dead, freeing lock for context %d\n", current->pid, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) ); #if __HAVE_RELEASE DRIVER_RELEASE(); #endif DRM(lock_free)( dev, &dev->lock.hw_lock->lock, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) ); /* FIXME: may require heavy-handed reset of hardware at this point, possibly processed via a callback to the X server. */ } #if __HAVE_RELEASE else if ( dev->lock.hw_lock ) { /* The lock is required to reclaim buffers */ DECLARE_WAITQUEUE( entry, current ); add_wait_queue( &dev->lock.lock_queue, &entry ); for (;;) { current->state = TASK_INTERRUPTIBLE; if ( !dev->lock.hw_lock ) { /* Device has been unregistered */ retcode = -EINTR; break; } if ( DRM(lock_take)( &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT ) ) { dev->lock.pid = priv->pid; dev->lock.lock_time = jiffies; atomic_inc( &dev->counts[_DRM_STAT_LOCKS] ); break; /* Got lock */ } /* Contention */ #if 0 atomic_inc( &dev->total_sleeps ); #endif schedule(); if ( signal_pending( current ) ) { retcode = -ERESTARTSYS; break; } } current->state = TASK_RUNNING; remove_wait_queue( &dev->lock.lock_queue, &entry ); if( !retcode ) { DRIVER_RELEASE(); DRM(lock_free)( dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT ); } } #elif __HAVE_DMA DRM(reclaim_buffers)( dev, priv->pid ); #endif DRM(fasync)( -1, filp, 0 ); down( &dev->struct_sem ); if ( priv->remove_auth_on_close == 1 ) { drm_file_t *temp = dev->file_first; while ( temp ) { temp->authenticated = 0; temp = temp->next; } } if ( priv->prev ) { priv->prev->next = priv->next; } else { dev->file_first = priv->next; } if ( priv->next ) { priv->next->prev = priv->prev; } else { dev->file_last = priv->prev; } up( &dev->struct_sem ); DRM(free)( priv, sizeof(*priv), DRM_MEM_FILES ); /* ======================================================== * End inline drm_release */ #if LINUX_VERSION_CODE < 0x020333 MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */ #endif atomic_inc( &dev->counts[_DRM_STAT_CLOSES] ); spin_lock( &dev->count_lock ); if ( !--dev->open_count ) { if ( atomic_read( &dev->ioctl_count ) || dev->blocked ) { DRM_ERROR( "Device busy: %d %d\n", atomic_read( &dev->ioctl_count ), dev->blocked ); spin_unlock( &dev->count_lock ); unlock_kernel(); return -EBUSY; } spin_unlock( &dev->count_lock ); unlock_kernel(); return DRM(takedown)( dev ); } spin_unlock( &dev->count_lock ); unlock_kernel(); return retcode; } /* DRM(ioctl) is called whenever a process performs an ioctl on /dev/drm. */ int DRM(ioctl)( struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg ) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_ioctl_desc_t *ioctl; drm_ioctl_t *func; int nr = DRM_IOCTL_NR(cmd); int retcode = 0; atomic_inc( &dev->ioctl_count ); atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] ); ++priv->ioctl_count; DRM_DEBUG( "pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%x, auth=%d\n", current->pid, cmd, nr, dev->device, priv->authenticated ); if ( nr >= DRIVER_IOCTL_COUNT ) { retcode = -EINVAL; } else { ioctl = &DRM(ioctls)[nr]; func = ioctl->func; if ( !func ) { DRM_DEBUG( "no function\n" ); retcode = -EINVAL; } else if ( ( ioctl->root_only && !capable( CAP_SYS_ADMIN ) )|| ( ioctl->auth_needed && !priv->authenticated ) ) { retcode = -EACCES; } else { retcode = func( inode, filp, cmd, arg ); } } atomic_dec( &dev->ioctl_count ); return retcode; } int DRM(lock)( struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg ) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; DECLARE_WAITQUEUE( entry, current ); drm_lock_t lock; int ret = 0; #if __HAVE_MULTIPLE_DMA_QUEUES drm_queue_t *q; #endif #if __HAVE_DMA_HISTOGRAM cycles_t start; dev->lck_start = start = get_cycles(); #endif if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) ) return -EFAULT; if ( lock.context == DRM_KERNEL_CONTEXT ) { DRM_ERROR( "Process %d using kernel context %d\n", current->pid, lock.context ); return -EINVAL; } DRM_DEBUG( "%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n", lock.context, current->pid, dev->lock.hw_lock->lock, lock.flags ); #if __HAVE_DMA_QUEUE if ( lock.context < 0 ) return -EINVAL; #elif __HAVE_MULTIPLE_DMA_QUEUES if ( lock.context < 0 || lock.context >= dev->queue_count ) return -EINVAL; q = dev->queuelist[lock.context]; #endif #if __HAVE_DMA_FLUSH ret = DRM(flush_block_and_flush)( dev, lock.context, lock.flags ); #endif if ( !ret ) { add_wait_queue( &dev->lock.lock_queue, &entry ); for (;;) { current->state = TASK_INTERRUPTIBLE; if ( !dev->lock.hw_lock ) { /* Device has been unregistered */ ret = -EINTR; break; } if ( DRM(lock_take)( &dev->lock.hw_lock->lock, lock.context ) ) { dev->lock.pid = current->pid; dev->lock.lock_time = jiffies; atomic_inc( &dev->counts[_DRM_STAT_LOCKS] ); break; /* Got lock */ } /* Contention */ schedule(); if ( signal_pending( current ) ) { ret = -ERESTARTSYS; break; } } current->state = TASK_RUNNING; remove_wait_queue( &dev->lock.lock_queue, &entry ); } #if __HAVE_DMA_FLUSH DRM(flush_unblock)( dev, lock.context, lock.flags ); /* cleanup phase */ #endif if ( !ret ) { sigemptyset( &dev->sigmask ); sigaddset( &dev->sigmask, SIGSTOP ); sigaddset( &dev->sigmask, SIGTSTP ); sigaddset( &dev->sigmask, SIGTTIN ); sigaddset( &dev->sigmask, SIGTTOU ); dev->sigdata.context = lock.context; dev->sigdata.lock = dev->lock.hw_lock; block_all_signals( DRM(notifier), &dev->sigdata, &dev->sigmask ); #if __HAVE_DMA_READY if ( lock.flags & _DRM_LOCK_READY ) { DRIVER_DMA_READY(); } #endif #if __HAVE_DMA_QUIESCENT if ( lock.flags & _DRM_LOCK_QUIESCENT ) { DRIVER_DMA_QUIESCENT(); } #endif } DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" ); #if __HAVE_DMA_HISTOGRAM atomic_inc(&dev->histo.lacq[DRM(histogram_slot)(get_cycles()-start)]); #endif return ret; } int DRM(unlock)( struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg ) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_lock_t lock; if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) ) return -EFAULT; if ( lock.context == DRM_KERNEL_CONTEXT ) { DRM_ERROR( "Process %d using kernel context %d\n", current->pid, lock.context ); return -EINVAL; } atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] ); DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT ); #if __HAVE_DMA_SCHEDULE DRM(dma_schedule)( dev, 1 ); #endif /* FIXME: Do we ever really need to check this??? */ if ( 1 /* !dev->context_flag */ ) { if ( DRM(lock_free)( dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT ) ) { DRM_ERROR( "\n" ); } } unblock_all_signals(); return 0; }