/* 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 * Gareth Hughes */ /* * 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 __HAVE_KERNEL_CTX_SWITCH #define __HAVE_KERNEL_CTX_SWITCH 0 #endif #ifndef PCI_ANY_ID #define PCI_ANY_ID ~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_POSTCLEANUP #define DRIVER_POSTCLEANUP() #endif #ifndef DRIVER_PRESETUP #define DRIVER_PRESETUP() #endif #ifndef DRIVER_POSTSETUP #define DRIVER_POSTSETUP() #endif #ifndef DRIVER_IOCTLS #define DRIVER_IOCTLS #endif #ifndef DRIVER_FOPS #endif /* * The default number of instances (minor numbers) to initialize. */ #ifndef DRIVER_NUM_CARDS #define DRIVER_NUM_CARDS 1 #endif #ifdef __FreeBSD__ static int DRM(init)(device_t nbdev); static void DRM(cleanup)(device_t nbdev); #elif defined(__NetBSD__) static int DRM(init)(drm_device_t *); static void DRM(cleanup)(drm_device_t *); #endif #ifdef __FreeBSD__ #define CDEV_MAJOR 145 #define DRIVER_SOFTC(unit) \ ((drm_device_t *) devclass_get_softc(DRM(devclass), unit)) #if __REALLY_HAVE_AGP MODULE_DEPEND(DRIVER_NAME, agp, 1, 1, 1); #endif #if DRM_LINUX MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); #endif #endif /* __FreeBSD__ */ #ifdef __NetBSD__ #define CDEV_MAJOR 90 #define DRIVER_SOFTC(unit) \ ((drm_device_t *) device_lookup(&DRM(_cd), unit)) #endif /* __NetBSD__ */ 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. */ [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { DRM(control), 1, 1 }, #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 #if __HAVE_VBL_IRQ [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = { DRM(wait_vblank), 0, 0 }, #endif DRIVER_IOCTLS }; #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( DRM(ioctls) ) const char *DRM(find_description)(int vendor, int device); #ifdef __FreeBSD__ static int DRM(probe)(device_t dev) { const char *s = NULL; int pciid=pci_get_devid(dev); int vendor = (pciid & 0x0000ffff); int device = (pciid & 0xffff0000) >> 16; s = DRM(find_description)(vendor, device); if (s) { device_set_desc(dev, s); return 0; } return ENXIO; } static int DRM(attach)(device_t dev) { return DRM(init)(dev); } static int DRM(detach)(device_t dev) { DRM(cleanup)(dev); return 0; } static device_method_t DRM(methods)[] = { /* Device interface */ DEVMETHOD(device_probe, DRM( probe)), DEVMETHOD(device_attach, DRM( attach)), DEVMETHOD(device_detach, DRM( detach)), { 0, 0 } }; static driver_t DRM(driver) = { "drm", DRM(methods), sizeof(drm_device_t), }; static devclass_t DRM( devclass); static struct cdevsw DRM( cdevsw) = { /* open */ DRM( open ), /* close */ DRM( close ), /* read */ DRM( read ), /* write */ DRM( write ), /* ioctl */ DRM( ioctl ), /* poll */ DRM( poll ), /* mmap */ DRM( mmap ), /* strategy */ nostrategy, /* name */ DRIVER_NAME, /* maj */ CDEV_MAJOR, /* dump */ nodump, /* psize */ nopsize, /* flags */ D_TTY | D_TRACKCLOSE, #if __FreeBSD_version >= 500000 /* kqfilter */ 0 #else /* bmaj */ -1 #endif }; #elif defined(__NetBSD__) int DRM(probe)(struct device *parent, struct cfdata *match, void *aux); void DRM(attach)(struct device *parent, struct device *self, void *aux); int DRM(detach)(struct device *self, int flags); int DRM(activate)(struct device *self, enum devact act); struct cfattach DRM(_ca) = { sizeof(drm_device_t), DRM(probe), DRM(attach), DRM(detach), DRM(activate) }; int DRM(probe)(struct device *parent, struct cfdata *match, void *aux) { struct pci_attach_args *pa = aux; const char *desc; desc = DRM(find_description)(PCI_VENDOR(pa->pa_id), PCI_PRODUCT(pa->pa_id)); if (desc != NULL) return 10; return 0; } void DRM(attach)(struct device *parent, struct device *self, void *aux) { struct pci_attach_args *pa = aux; drm_device_t *dev = (drm_device_t *)self; memcpy(&dev->pa, aux, sizeof(dev->pa)); DRM_INFO("%s", DRM(find_description)(PCI_VENDOR(pa->pa_id), PCI_PRODUCT(pa->pa_id))); DRM(init)(dev); } int DRM(detach)(struct device *self, int flags) { DRM(cleanup)((drm_device_t *)self); return 0; } int DRM(activate)(struct device *self, enum devact act) { switch (act) { case DVACT_ACTIVATE: return (EOPNOTSUPP); break; case DVACT_DEACTIVATE: /* FIXME */ break; } return (0); } #endif const char *DRM(find_description)(int vendor, int device) { const char *s = NULL; int i=0, done=0; while ( !done && (DRM(devicelist)[i].vendor != 0 ) ) { if ( (DRM(devicelist)[i].vendor == vendor) && (DRM(devicelist)[i].device == device) ) { done=1; if ( DRM(devicelist)[i].supported ) s = DRM(devicelist)[i].name; else DRM_INFO("%s not supported\n", DRM(devicelist)[i].name); } i++; } return s; } static int DRM(setup)( drm_device_t *dev ) { int i; DRIVER_PRESETUP(); 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 DRM_ERR(ENOMEM); memset(dev->maplist, 0, sizeof(*dev->maplist)); TAILQ_INIT(dev->maplist); dev->map_count = 0; dev->vmalist = NULL; dev->lock.hw_lock = NULL; dev->lock.lock_queue = 0; 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; #if __FreeBSD_version >= 500000 callout_init( &dev->timer, 1 ); #else callout_init( &dev->timer ); #endif dev->context_wait = 0; 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; #ifdef __FreeBSD__ dev->buf_sigio = NULL; #elif defined(__NetBSD__) dev->buf_pgid = 0; #endif dev->buf_readers = 0; dev->buf_writers = 0; dev->buf_selecting = 0; 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. */ DRIVER_POSTSETUP(); return 0; } static int DRM(takedown)( drm_device_t *dev ) { drm_magic_entry_t *pt, *next; drm_map_t *map; drm_map_list_entry_t *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 DRM_LOCK; callout_stop( &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->handle ); DRM(free_agp)( entry->handle, 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 ) { while ((list=TAILQ_FIRST(dev->maplist))) { map = list->map; switch ( map->type ) { case _DRM_REGISTERS: case _DRM_FRAME_BUFFER: #if __REALLY_HAVE_MTRR if ( map->mtrr >= 0 ) { int retcode; #ifdef __FreeBSD__ int act; struct mem_range_desc mrdesc; mrdesc.mr_base = map->offset; mrdesc.mr_len = map->size; mrdesc.mr_flags = MDF_WRITECOMBINE; act = MEMRANGE_SET_UPDATE; bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME)); retcode = mem_range_attr_set(&mrdesc, &act); map->mtrr=1; #elif defined __NetBSD__ struct mtrr mtrrmap; int one = 1; mtrrmap.base = map->offset; mtrrmap.len = map->size; mtrrmap.type = MTRR_TYPE_WC; mtrrmap.flags = 0; /*mtrrmap.owner = p->p_pid;*/ /* XXX: Use curproc here? */ retcode = mtrr_set( &mtrrmap, &one, DRM_CURPROC, MTRR_GETSET_KERNEL); #endif DRM_DEBUG( "mtrr_del=%d\n", retcode ); } #endif DRM(ioremapfree)( map->handle, map->size ); break; case _DRM_SHM: DRM(free)(map->handle, map->size, DRM_MEM_SAREA); 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 REALLY_HAVE_SG * isn't defined. */ #if __REALLY_HAVE_SG if(dev->sg) { DRM(sg_cleanup)(dev->sg); dev->sg = NULL; } #endif break; } TAILQ_REMOVE(dev->maplist, list, link); DRM(free)(list, sizeof(*list), DRM_MEM_MAPS); 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; DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); } DRM_UNLOCK; return 0; } /* linux: drm_init is called via init_module at module load time, or via * linux/init/main.c (this is not currently supported). * bsd: drm_init is called via the attach function per device. */ #ifdef __FreeBSD__ static int DRM(init)( device_t nbdev ) #elif defined(__NetBSD__) static int DRM(init)( drm_device_t *dev ) #endif { int unit; #ifdef __FreeBSD__ drm_device_t *dev; #endif #if __HAVE_CTX_BITMAP int retcode; #endif DRM_DEBUG( "\n" ); DRIVER_PREINIT(); #ifdef __FreeBSD__ unit = device_get_unit(nbdev); dev = device_get_softc(nbdev); memset( (void *)dev, 0, sizeof(*dev) ); dev->device = nbdev; dev->devnode = make_dev( &DRM(cdevsw), unit, DRM_DEV_UID, DRM_DEV_GID, DRM_DEV_MODE, "dri/card%d", unit ); #elif defined(__NetBSD__) unit = minor(dev->device.dv_unit); #endif DRM_SPININIT(dev->count_lock, "drm device"); lockinit(&dev->dev_lock, PZERO, "drmlk", 0, 0); dev->name = DRIVER_NAME; DRM(mem_init)(); DRM(sysctl_init)(dev); TAILQ_INIT(&dev->files); #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(sysctl_cleanup)( dev ); #ifdef __FreeBSD__ destroy_dev(dev->devnode); #endif DRM(takedown)( dev ); return DRM_ERR(ENOMEM); } #endif /* __MUST_HAVE_AGP */ #if __REALLY_HAVE_MTRR if (dev->agp) { #ifdef __FreeBSD__ int retcode = 0, act; struct mem_range_desc mrdesc; mrdesc.mr_base = dev->agp->info.ai_aperture_base; mrdesc.mr_len = dev->agp->info.ai_aperture_size; mrdesc.mr_flags = MDF_WRITECOMBINE; act = MEMRANGE_SET_UPDATE; bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME)); retcode = mem_range_attr_set(&mrdesc, &act); dev->agp->agp_mtrr=1; #elif defined __NetBSD__ struct mtrr mtrrmap; int one = 1; mtrrmap.base = dev->agp->info.ai_aperture_base; /* Might need a multiplier here XXX */ mtrrmap.len = dev->agp->info.ai_aperture_size; mtrrmap.type = MTRR_TYPE_WC; mtrrmap.flags = MTRR_VALID; dev->agp->agp_mtrr = mtrr_set( &mtrrmap, &one, NULL, MTRR_GETSET_KERNEL); #endif /* __NetBSD__ */ } #endif /* __REALLY_HAVE_MTRR */ #endif /* __REALLY_HAVE_AGP */ #if __HAVE_CTX_BITMAP retcode = DRM(ctxbitmap_init)( dev ); if( retcode ) { DRM_ERROR( "Cannot allocate memory for context bitmap.\n" ); DRM(sysctl_cleanup)( dev ); #ifdef __FreeBSD__ destroy_dev(dev->devnode); #endif DRM(takedown)( dev ); return retcode; } #endif DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n", DRIVER_NAME, DRIVER_MAJOR, DRIVER_MINOR, DRIVER_PATCHLEVEL, DRIVER_DATE, unit ); DRIVER_POSTINIT(); return 0; } /* linux: drm_cleanup is called via cleanup_module at module unload time. * bsd: drm_cleanup is called per device at module unload time. * FIXME: NetBSD */ #ifdef __FreeBSD__ static void DRM(cleanup)(device_t nbdev) #elif defined(__NetBSD__) static void DRM(cleanup)(drm_device_t *dev) #endif { #ifdef __FreeBSD__ drm_device_t *dev; #endif #if __REALLY_HAVE_MTRR #ifdef __NetBSD__ struct mtrr mtrrmap; int one = 1; #endif /* __NetBSD__ */ #endif /* __REALLY_HAVE_MTRR */ DRM_DEBUG( "\n" ); #ifdef __FreeBSD__ dev = device_get_softc(nbdev); #endif DRM(sysctl_cleanup)( dev ); #ifdef __FreeBSD__ destroy_dev(dev->devnode); #endif #if __HAVE_CTX_BITMAP DRM(ctxbitmap_cleanup)( dev ); #endif #if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR if ( dev->agp && dev->agp->agp_mtrr >= 0) { #if defined(__NetBSD__) mtrrmap.base = dev->agp->info.ai_aperture_base; mtrrmap.len = dev->agp->info.ai_aperture_size; mtrrmap.type = 0; mtrrmap.flags = 0; retval = mtrr_set( &mtrrmap, &one, NULL, MTRR_GETSET_KERNEL); #endif } #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 DRIVER_POSTCLEANUP(); DRM(mem_uninit)(); DRM_SPINUNINIT(dev->count_lock); } int DRM(version)( DRM_IOCTL_ARGS ) { drm_version_t version; int len; DRM_COPY_FROM_USER_IOCTL( version, (drm_version_t *)data, sizeof(version) ); #define DRM_COPY( name, value ) \ len = strlen( value ); \ if ( len > name##_len ) len = name##_len; \ name##_len = strlen( value ); \ if ( len && name ) { \ if ( DRM_COPY_TO_USER( name, value, len ) ) \ return DRM_ERR(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 ); DRM_COPY_TO_USER_IOCTL( (drm_version_t *)data, version, sizeof(version) ); return 0; } int DRM(open)(dev_t kdev, int flags, int fmt, DRM_STRUCTPROC *p) { drm_device_t *dev = NULL; int retcode = 0; dev = DRIVER_SOFTC(minor(kdev)); DRM_DEBUG( "open_count = %d\n", dev->open_count ); retcode = DRM(open_helper)(kdev, flags, fmt, p, dev); if ( !retcode ) { atomic_inc( &dev->counts[_DRM_STAT_OPENS] ); DRM_SPINLOCK( &dev->count_lock ); #ifdef __FreeBSD__ device_busy(dev->device); #endif if ( !dev->open_count++ ) retcode = DRM(setup)( dev ); DRM_SPINUNLOCK( &dev->count_lock ); } return retcode; } int DRM(close)(dev_t kdev, int flags, int fmt, DRM_STRUCTPROC *p) { drm_file_t *priv; DRM_DEVICE; int retcode = 0; DRM_DEBUG( "open_count = %d\n", dev->open_count ); priv = DRM(find_file_by_proc)(dev, p); if (!priv) { DRM_DEBUG("can't find authenticator\n"); return EINVAL; } DRIVER_PRERELEASE(); /* ======================================================== * Begin inline drm_release */ #ifdef __FreeBSD__ DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n", DRM_CURRENTPID, (long)dev->device, dev->open_count ); #elif defined(__NetBSD__) DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n", DRM_CURRENTPID, (long)&dev->device, dev->open_count); #endif if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) && dev->lock.pid == DRM_CURRENTPID) { DRM_DEBUG("Process %d dead, freeing lock for context %d\n", DRM_CURRENTPID, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); #if HAVE_DRIVER_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 */ for (;;) { if ( !dev->lock.hw_lock ) { /* Device has been unregistered */ retcode = DRM_ERR(EINTR); break; } if ( DRM(lock_take)( &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT ) ) { dev->lock.pid = p->p_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 retcode = tsleep(&dev->lock.lock_queue, PZERO|PCATCH, "drmlk2", 0); if (retcode) break; } 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 #if defined (__FreeBSD__) && (__FreeBSD_version >= 500000) funsetown(&dev->buf_sigio); #elif defined(__FreeBSD__) funsetown(dev->buf_sigio); #elif defined(__NetBSD__) dev->buf_pgid = 0; #endif /* __NetBSD__ */ DRM_LOCK; priv = DRM(find_file_by_proc)(dev, p); if (priv) { priv->refs--; if (!priv->refs) { TAILQ_REMOVE(&dev->files, priv, link); DRM(free)( priv, sizeof(*priv), DRM_MEM_FILES ); } } DRM_UNLOCK; /* ======================================================== * End inline drm_release */ atomic_inc( &dev->counts[_DRM_STAT_CLOSES] ); DRM_SPINLOCK( &dev->count_lock ); #ifdef __FreeBSD__ device_unbusy(dev->device); #endif if ( !--dev->open_count ) { if ( atomic_read( &dev->ioctl_count ) || dev->blocked ) { DRM_ERROR( "Device busy: %ld %d\n", (unsigned long)atomic_read( &dev->ioctl_count ), dev->blocked ); DRM_SPINUNLOCK( &dev->count_lock ); return DRM_ERR(EBUSY); } DRM_SPINUNLOCK( &dev->count_lock ); return DRM(takedown)( dev ); } DRM_SPINUNLOCK( &dev->count_lock ); return retcode; } /* DRM(ioctl) is called whenever a process performs an ioctl on /dev/drm. */ int DRM(ioctl)( DRM_IOCTL_ARGS ) { DRM_DEVICE; int retcode = 0; drm_ioctl_desc_t *ioctl; d_ioctl_t *func; int nr = DRM_IOCTL_NR(cmd); DRM_PRIV; atomic_inc( &dev->ioctl_count ); atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] ); ++priv->ioctl_count; #ifdef __FreeBSD__ DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", DRM_CURRENTPID, cmd, nr, (long)dev->device, priv->authenticated ); #elif defined(__NetBSD__) DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", DRM_CURRENTPID, cmd, nr, (long)&dev->device, priv->authenticated ); #endif switch (cmd) { case FIONBIO: atomic_dec(&dev->ioctl_count); return 0; case FIOASYNC: atomic_dec(&dev->ioctl_count); dev->flags |= FASYNC; return 0; #ifdef __FreeBSD__ case FIOSETOWN: atomic_dec(&dev->ioctl_count); return fsetown(*(int *)data, &dev->buf_sigio); case FIOGETOWN: atomic_dec(&dev->ioctl_count); #if (__FreeBSD_version >= 500000) *(int *) data = fgetown(&dev->buf_sigio); #else *(int *) data = fgetown(dev->buf_sigio); #endif return 0; } #endif /* __FreeBSD__ */ #ifdef __NetBSD__ case TIOCSPGRP: atomic_dec(&dev->ioctl_count); dev->buf_pgid = *(int *)data; return 0; case TIOCGPGRP: atomic_dec(&dev->ioctl_count); *(int *)data = dev->buf_pgid; return 0; #endif /* __NetBSD__ */ 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 && DRM_SUSER(p) ) || ( ioctl->auth_needed && !priv->authenticated ) ) { retcode = EACCES; } else { retcode = func( kdev, cmd, data, flags, p ); } } atomic_dec( &dev->ioctl_count ); return DRM_ERR(retcode); } int DRM(lock)( DRM_IOCTL_ARGS ) { DRM_DEVICE; 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 DRM_COPY_FROM_USER_IOCTL( lock, (drm_lock_t *)data, sizeof(lock) ); if ( lock.context == DRM_KERNEL_CONTEXT ) { DRM_ERROR( "Process %d using kernel context %d\n", DRM_CURRENTPID, lock.context ); return DRM_ERR(EINVAL); } DRM_DEBUG( "%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n", lock.context, DRM_CURRENTPID, dev->lock.hw_lock->lock, lock.flags ); #if __HAVE_DMA_QUEUE if ( lock.context < 0 ) return DRM_ERR(EINVAL); #elif __HAVE_MULTIPLE_DMA_QUEUES if ( lock.context < 0 || lock.context >= dev->queue_count ) return DRM_ERR(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 ) { for (;;) { 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 = DRM_CURRENTPID; dev->lock.lock_time = jiffies; atomic_inc( &dev->counts[_DRM_STAT_LOCKS] ); break; /* Got lock */ } /* Contention */ ret = tsleep((void *)&dev->lock.lock_queue, PZERO|PCATCH, "drmlk2", 0); if (ret) break; } } #if __HAVE_DMA_FLUSH DRM(flush_unblock)( dev, lock.context, lock.flags ); /* cleanup phase */ #endif if ( !ret ) { #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 #if __HAVE_KERNEL_CTX_SWITCH if ( dev->last_context != lock.context ) { DRM(context_switch)(dev, dev->last_context, lock.context); } #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 DRM_ERR(ret); } int DRM(unlock)( DRM_IOCTL_ARGS ) { DRM_DEVICE; drm_lock_t lock; DRM_COPY_FROM_USER_IOCTL( lock, (drm_lock_t *)data, sizeof(lock) ) ; if ( lock.context == DRM_KERNEL_CONTEXT ) { DRM_ERROR( "Process %d using kernel context %d\n", DRM_CURRENTPID, lock.context ); return DRM_ERR(EINVAL); } atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] ); #if __HAVE_KERNEL_CTX_SWITCH /* We no longer really hold it, but if we are the next * agent to request it then we should just be able to * take it immediately and not eat the ioctl. */ dev->lock.pid = 0; { __volatile__ unsigned int *plock = &dev->lock.hw_lock->lock; unsigned int old, new, prev, ctx; ctx = lock.context; do { old = *plock; new = ctx; prev = cmpxchg(plock, old, new); } while (prev != old); } wake_up_interruptible(&dev->lock.lock_queue); #else 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" ); } } #endif /* !__HAVE_KERNEL_CTX_SWITCH */ return 0; } #if DRM_LINUX #define LINUX_IOCTL_DRM_MIN 0x6400 #define LINUX_IOCTL_DRM_MAX 0x64ff static linux_ioctl_function_t DRM( linux_ioctl); static struct linux_ioctl_handler DRM( handler) = {DRM( linux_ioctl), LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; SYSINIT (DRM( register), SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_register_handler, &DRM( handler)); SYSUNINIT(DRM( unregister), SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_unregister_handler, &DRM( handler)); #define LINUX_IOC_VOID IOC_VOID #define LINUX_IOC_IN IOC_OUT /* Linux has the values the other way around */ #define LINUX_IOC_OUT IOC_IN /* * Linux emulation IOCTL */ static int DRM(linux_ioctl)(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) { u_long cmd = args->cmd; #define STK_PARAMS 128 union { char stkbuf[STK_PARAMS]; long align; } ubuf; caddr_t data=NULL, memp=NULL; u_int size = IOCPARM_LEN(cmd); int error; #if (__FreeBSD_version >= 500000) struct file *fp; #else struct file *fp = p->p_fd->fd_ofiles[args->fd]; #endif if ( size > STK_PARAMS ) { if ( size > IOCPARM_MAX ) return EINVAL; memp = malloc( (u_long)size, DRM(M_DRM), M_WAITOK ); data = memp; } else { data = ubuf.stkbuf; } if ( cmd & LINUX_IOC_IN ) { if ( size ) { error = copyin( (caddr_t)args->arg, data, (u_int)size ); if (error) { if ( memp ) free( data, DRM(M_DRM) ); return error; } } else { data = (caddr_t)args->arg; } } else if ( (cmd & LINUX_IOC_OUT) && size ) { /* * Zero the buffer so the user always * gets back something deterministic. */ bzero( data, size ); } else if ( cmd & LINUX_IOC_VOID ) { *(caddr_t *)data = (caddr_t)args->arg; } #if (__FreeBSD_version >= 500000) if ( (error = fget( p, args->fd, &fp )) != 0 ) { if ( memp ) free( memp, DRM(M_DRM) ); return (error); } error = fo_ioctl( fp, cmd, data, p->td_ucred, p ); fdrop( fp, p ); #else error = fo_ioctl( fp, cmd, data, p ); #endif if ( error == 0 && (cmd & LINUX_IOC_OUT) && size ) error = copyout( data, (caddr_t)args->arg, (u_int)size ); if ( memp ) free( memp, DRM(M_DRM) ); return error; } #endif /* DRM_LINUX */