/* * 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. * Copyright (c) 2009, Intel Corporation. * 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 * */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #include "drmP.h" #include "drm.h" #include "drm_sarea.h" int drm_debug_flag = 1; #define DRIVER_IOCTL_COUNT 256 drm_ioctl_desc_t drm_ioctls[DRIVER_IOCTL_COUNT] = { [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = {drm_version, 0}, [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = {drm_getunique, 0}, [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = {drm_getmagic, 0}, [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = {drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = {drm_getmap, 0}, [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = {drm_getclient, 0}, [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = {drm_getstats, 0}, [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = {drm_setversion, DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_MODESET_CTL)] = {drm_modeset_ctl, 0}, [DRM_IOCTL_NR(DRM_IOCTL_GEM_CLOSE)] = {drm_gem_close_ioctl, 0}, [DRM_IOCTL_NR(DRM_IOCTL_GEM_FLINK)] = {drm_gem_flink_ioctl, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_GEM_OPEN)] = {drm_gem_open_ioctl, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = {drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = {drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = {drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = {drm_rmmap_ioctl, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = {drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = {drm_getsareactx, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = {drm_addctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = {drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = {drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = {drm_getctx, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = {drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = {drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = {drm_resctx, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = {drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = {drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = {drm_lock, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = {drm_unlock, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = {drm_noop, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = {drm_addbufs_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = {drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = {drm_infobufs, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = {drm_mapbufs, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = {drm_freebufs, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = {drm_dma, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = {drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = {drm_agp_acquire, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = {drm_agp_release, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = {drm_agp_enable, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = {drm_agp_info, DRM_AUTH}, [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = {drm_agp_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = {drm_agp_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = {drm_agp_bind, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = {drm_agp_unbind, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = {drm_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = {drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = {drm_wait_vblank, 0}, [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW)] = {drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, }; extern void idr_list_free(struct idr_list *head); const char * drm_find_description(int vendor, int device, drm_pci_id_list_t *idlist) { int i = 0; for (i = 0; idlist[i].vendor != 0; i++) { if ((idlist[i].vendor == vendor) && (idlist[i].device == device)) { return (idlist[i].name); } } return ((char *)NULL); } static int drm_firstopen(drm_device_t *dev) { int i; int retval; drm_local_map_t *map; /* prebuild the SAREA */ retval = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, _DRM_CONTAINS_LOCK, &map); if (retval != 0) { DRM_ERROR("firstopen: failed to prebuild SAREA"); return (retval); } if (dev->driver->use_agp) { DRM_DEBUG("drm_firstopen: use_agp=%d", dev->driver->use_agp); if (drm_device_is_agp(dev)) dev->agp = drm_agp_init(dev); if (dev->driver->require_agp && dev->agp == NULL) { DRM_ERROR("couldn't initialize AGP"); return (EIO); } } if (dev->driver->firstopen) retval = dev->driver->firstopen(dev); if (retval != 0) { DRM_ERROR("drm_firstopen: driver-specific firstopen failed"); return (retval); } dev->buf_use = 0; if (dev->driver->use_dma) { i = drm_dma_setup(dev); if (i != 0) return (i); } dev->counters = 6; 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; for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) *(&dev->counts[i]) = 0; for (i = 0; i < DRM_HASH_SIZE; i++) { dev->magiclist[i].head = NULL; dev->magiclist[i].tail = NULL; } dev->irq_enabled = 0; dev->context_flag = 0; dev->last_context = 0; dev->if_version = 0; return (0); } /* Free resources associated with the DRM on the last close. */ static int drm_lastclose(drm_device_t *dev) { drm_magic_entry_t *pt, *next; drm_local_map_t *map, *mapsave; int i; DRM_SPINLOCK_ASSERT(&dev->dev_lock); if (dev->driver->lastclose != NULL) dev->driver->lastclose(dev); if (dev->irq_enabled) (void) drm_irq_uninstall(dev); if (dev->unique) { drm_free(dev->unique, dev->unique_len + 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; } /* 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 drm_cleanup is called. */ for (entry = dev->agp->memory; entry; entry = nexte) { nexte = entry->next; if (entry->bound) (void) drm_agp_unbind_memory( (unsigned long)entry->handle, dev); (void) drm_agp_free_memory(entry->handle, dev); drm_free(entry, sizeof (*entry), DRM_MEM_AGPLISTS); } dev->agp->memory = NULL; if (dev->agp->acquired) (void) drm_agp_do_release(dev); dev->agp->acquired = 0; dev->agp->enabled = 0; drm_agp_fini(dev); } if (dev->sg != NULL) { drm_sg_mem_t *entry; entry = dev->sg; dev->sg = NULL; drm_sg_cleanup(dev, entry); } /* Clean up maps that weren't set up by the driver. */ TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) { if (!map->kernel_owned) drm_rmmap(dev, map); } drm_dma_takedown(dev); if (dev->lock.hw_lock) { dev->lock.hw_lock = NULL; /* SHM removed */ dev->lock.filp = NULL; mutex_enter(&(dev->lock.lock_mutex)); cv_broadcast(&(dev->lock.lock_cv)); mutex_exit(&(dev->lock.lock_mutex)); } return (0); } static int drm_load(drm_device_t *dev) { int retcode; cv_init(&(dev->lock.lock_cv), NULL, CV_DRIVER, NULL); mutex_init(&(dev->lock.lock_mutex), NULL, MUTEX_DRIVER, NULL); mutex_init(&(dev->dev_lock), "drmdev", MUTEX_DRIVER, NULL); mutex_init(&dev->irq_lock, "drmirq", MUTEX_DRIVER, (void *)dev->intr_block); mutex_init(&dev->drw_lock, "drmdrw", MUTEX_DRIVER, NULL); mutex_init(&dev->tasklet_lock, "drmtsk", MUTEX_DRIVER, NULL); dev->irq = pci_get_irq(dev); dev->pci_vendor = pci_get_vendor(dev); dev->pci_device = pci_get_device(dev); TAILQ_INIT(&dev->maplist); TAILQ_INIT(&dev->minordevs); TAILQ_INIT(&dev->files); if (dev->driver->load != NULL) { retcode = dev->driver->load(dev, 0); if (retcode != 0) { DRM_ERROR("drm_load: failed\n"); goto error; } } retcode = drm_ctxbitmap_init(dev); if (retcode != 0) { DRM_ERROR("drm_load: Cannot allocate memory for ctx bitmap"); goto error; } if (dev->driver->use_gem == 1) { retcode = drm_gem_init(dev); if (retcode) { DRM_ERROR("Cannot initialize graphics execution " "manager (GEM)\n"); goto error; } } if (drm_init_kstats(dev)) { DRM_ERROR("drm_attach => drm_load: init kstats error"); retcode = EFAULT; goto error; } DRM_INFO("!drm: Initialized %s %d.%d.%d %s ", dev->driver->driver_name, dev->driver->driver_major, dev->driver->driver_minor, dev->driver->driver_patchlevel, dev->driver->driver_date); return (0); error: DRM_LOCK(); (void) drm_lastclose(dev); DRM_UNLOCK(); cv_destroy(&(dev->lock.lock_cv)); mutex_destroy(&(dev->lock.lock_mutex)); mutex_destroy(&dev->irq_lock); mutex_destroy(&(dev->dev_lock)); mutex_destroy(&dev->drw_lock); mutex_destroy(&dev->tasklet_lock); return (retcode); } /* called when cleanup this module */ static void drm_unload(drm_device_t *dev) { drm_local_map_t *map; drm_vblank_cleanup(dev); drm_ctxbitmap_cleanup(dev); if (dev->driver->use_gem == 1) { idr_list_free(&dev->object_name_idr); mutex_destroy(&dev->object_name_lock); } DRM_LOCK(); (void) drm_lastclose(dev); DRM_UNLOCK(); while ((map = TAILQ_FIRST(&dev->maplist)) != NULL) { drm_rmmap(dev, map); } if (dev->driver->unload != NULL) dev->driver->unload(dev); drm_mem_uninit(); cv_destroy(&dev->lock.lock_cv); mutex_destroy(&dev->lock.lock_mutex); mutex_destroy(&dev->irq_lock); mutex_destroy(&dev->dev_lock); mutex_destroy(&dev->drw_lock); mutex_destroy(&dev->tasklet_lock); dev->gtt_total = 0; atomic_set(&dev->pin_memory, 0); DRM_ERROR("drm_unload"); } /*ARGSUSED*/ int drm_open(drm_device_t *dev, drm_cminor_t *mp, int openflags, int otyp, cred_t *credp) { int retcode; retcode = drm_open_helper(dev, mp, openflags, otyp, credp); if (!retcode) { atomic_inc_32(&dev->counts[_DRM_STAT_OPENS]); DRM_LOCK(); if (!dev->open_count ++) retcode = drm_firstopen(dev); DRM_UNLOCK(); } return (retcode); } /*ARGSUSED*/ int drm_close(drm_device_t *dev, int minor, int flag, int otyp, cred_t *credp) { drm_cminor_t *mp; drm_file_t *fpriv; int retcode = 0; DRM_LOCK(); mp = drm_find_file_by_minor(dev, minor); if (!mp) { DRM_UNLOCK(); DRM_ERROR("drm_close: can't find authenticator"); return (EACCES); } fpriv = mp->fpriv; ASSERT(fpriv); if (--fpriv->refs != 0) goto done; if (dev->driver->preclose != NULL) dev->driver->preclose(dev, fpriv); /* * Begin inline drm_release */ DRM_DEBUG("drm_close :pid = %d , open_count = %d", DRM_CURRENTPID, dev->open_count); if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) && dev->lock.filp == fpriv) { DRM_DEBUG("Process %d dead, freeing lock for context %d", DRM_CURRENTPID, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); if (dev->driver->reclaim_buffers_locked != NULL) dev->driver->reclaim_buffers_locked(dev, fpriv); (void) drm_lock_free(dev, &dev->lock.hw_lock->lock, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); } else if (dev->driver->reclaim_buffers_locked != NULL && dev->lock.hw_lock != NULL) { DRM_ERROR("drm_close: " "retake lock not implemented yet"); } if (dev->driver->use_dma) { drm_reclaim_buffers(dev, fpriv); } if (dev->driver->use_gem == 1) { drm_gem_release(dev, fpriv); } if (dev->driver->postclose != NULL) { dev->driver->postclose(dev, fpriv); } TAILQ_REMOVE(&dev->files, fpriv, link); drm_free(fpriv, sizeof (*fpriv), DRM_MEM_FILES); done: atomic_inc_32(&dev->counts[_DRM_STAT_CLOSES]); TAILQ_REMOVE(&dev->minordevs, mp, link); drm_free(mp, sizeof (*mp), DRM_MEM_FILES); if (--dev->open_count == 0) { retcode = drm_lastclose(dev); } DRM_UNLOCK(); return (retcode); } int drm_attach(drm_device_t *dev) { return (drm_load(dev)); } int drm_detach(drm_device_t *dev) { drm_unload(dev); drm_fini_kstats(dev); return (DDI_SUCCESS); } static int drm_get_businfo(drm_device_t *dev) { dev->irq = pci_get_irq(dev); if (dev->irq == -1) { DRM_ERROR("drm_get_businfo: get irq error"); return (DDI_FAILURE); } /* XXX Fix domain number (alpha hoses) */ dev->pci_domain = 0; if (pci_get_info(dev, &dev->pci_bus, &dev->pci_slot, &dev->pci_func) != DDI_SUCCESS) { DRM_ERROR("drm_get_businfo: get bus slot func error "); return (DDI_FAILURE); } DRM_DEBUG("drm_get_businfo: pci bus: %d, pci slot :%d pci func %d", dev->pci_bus, dev->pci_slot, dev->pci_func); return (DDI_SUCCESS); } int drm_probe(drm_device_t *dev, drm_pci_id_list_t *idlist) { const char *s = NULL; int vendor, device; vendor = pci_get_vendor(dev); device = pci_get_device(dev); s = drm_find_description(vendor, device, idlist); if (s != NULL) { dev->desc = s; if (drm_get_businfo(dev) != DDI_SUCCESS) { DRM_ERROR("drm_probe: drm get bus info error"); return (DDI_FAILURE); } return (DDI_SUCCESS); } return (DDI_FAILURE); }