diff options
Diffstat (limited to 'nx-X11/extras/drm/linux-core/drm_drv.c')
| -rw-r--r-- | nx-X11/extras/drm/linux-core/drm_drv.c | 564 |
1 files changed, 564 insertions, 0 deletions
diff --git a/nx-X11/extras/drm/linux-core/drm_drv.c b/nx-X11/extras/drm/linux-core/drm_drv.c new file mode 100644 index 000000000..1e711c087 --- /dev/null +++ b/nx-X11/extras/drm/linux-core/drm_drv.c @@ -0,0 +1,564 @@ +/** + * \file drm_drv.c + * Generic driver template + * + * \author Rickard E. (Rik) Faith <faith@valinux.com> + * \author Gareth Hughes <gareth@valinux.com> + * + * To use this template, you must at least define the following (samples + * given for the MGA driver): + * + * \code + * #define DRIVER_AUTHOR "VA Linux Systems, Inc." + * + * #define DRIVER_NAME "mga" + * #define DRIVER_DESC "Matrox G200/G400" + * #define DRIVER_DATE "20001127" + * + * #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( mga_ioctls ) + * + * #define drm_x mga_##x + * \endcode + */ + +/* + * 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. + */ +#include "drmP.h" +#include "drm_core.h" + +static void __exit drm_cleanup(drm_device_t * dev); +int drm_fb_loaded = 0; + +static int drm_version(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg); + +/** Ioctl table */ +drm_ioctl_desc_t drm_ioctls[] = { + [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_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, 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}, + /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ + [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = {NULL, DRM_AUTH}, + + [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = {drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, + +#if __OS_HAS_AGP + [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = {drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, + [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = {drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, + [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = {drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, + [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = {drm_agp_info_ioctl, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = {drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, + [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = {drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, + [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = {drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, + [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = {drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, +#endif + + [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}, +}; + +#define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( drm_ioctls ) + +/** + * Take down the DRM device. + * + * \param dev DRM device structure. + * + * Frees every resource in \p dev. + * + * \sa drm_device + */ +int drm_lastclose(drm_device_t * dev) +{ + drm_magic_entry_t *pt, *next; + drm_map_list_t *r_list; + drm_vma_entry_t *vma, *vma_next; + int i; + + DRM_DEBUG("\n"); + + if (dev->driver->lastclose) + dev->driver->lastclose(dev); + DRM_DEBUG("driver lastclose completed\n"); + + if (dev->unique) { + drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); + dev->unique=NULL; + dev->unique_len=0; + } + + if (dev->irq_enabled) + drm_irq_uninstall(dev); + + down(&dev->struct_sem); + del_timer(&dev->timer); + + 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; + } + + /* Clear AGP information */ + if (drm_core_has_AGP(dev) && 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_release(dev); + + dev->agp->acquired = 0; + dev->agp->enabled = 0; + } + if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) { + drm_sg_cleanup(dev->sg); + dev->sg = NULL; + } + + /* 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_empty(&dev->maplist->head)) { + struct list_head *list = dev->maplist->head.next; + r_list = list_entry(list, drm_map_list_t, head); + drm_rmmap_locked(dev, r_list->map); + } + } + + if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { + for (i = 0; i < dev->queue_count; i++) { + + 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; + + if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) + drm_dma_takedown(dev); + + if (dev->lock.hw_lock) { + dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */ + dev->lock.filp = NULL; + wake_up_interruptible(&dev->lock.lock_queue); + } + up(&dev->struct_sem); + + DRM_DEBUG("lastclose completed\n"); + return 0; +} + +void __exit drm_cleanup_pci(struct pci_dev *pdev) +{ + drm_device_t *dev = pci_get_drvdata(pdev); + + pci_set_drvdata(pdev, NULL); + pci_release_regions(pdev); + if (dev) + drm_cleanup(dev); +} +EXPORT_SYMBOL(drm_cleanup_pci); + +/** + * Module initialization. Called via init_module at module load time, or via + * linux/init/main.c (this is not currently supported). + * + * \return zero on success or a negative number on failure. + * + * Initializes an array of drm_device structures, and attempts to + * initialize all available devices, using consecutive minors, registering the + * stubs and initializing the AGP device. + * + * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and + * after the initialization for driver customization. + */ +int drm_init(struct drm_driver *driver, + struct pci_device_id *pciidlist) +{ + struct pci_dev *pdev; + struct pci_device_id *pid; + int rc, i; + + DRM_DEBUG("\n"); + + for (i = 0; (pciidlist[i].vendor != 0) && !drm_fb_loaded; i++) { + pid = &pciidlist[i]; + + pdev = NULL; + /* pass back in pdev to account for multiple identical cards */ + while ((pdev = + pci_get_subsys(pid->vendor, pid->device, pid->subvendor, + pid->subdevice, pdev))) { + /* is there already a driver loaded, or (short circuit saves work) */ + /* does something like VesaFB have control of the memory region? */ + if (pci_dev_driver(pdev) + || pci_request_regions(pdev, "DRM scan")) { + /* go into stealth mode */ + drm_fb_loaded = 1; + pci_dev_put(pdev); + break; + } + /* no fbdev or vesadev, put things back and wait for normal probe */ + pci_release_regions(pdev); + } + } + + if (!drm_fb_loaded) + pci_register_driver(&driver->pci_driver); + else { + for (i = 0; pciidlist[i].vendor != 0; i++) { + pid = &pciidlist[i]; + + pdev = NULL; + /* pass back in pdev to account for multiple identical cards */ + while ((pdev = + pci_get_subsys(pid->vendor, pid->device, + pid->subvendor, pid->subdevice, + pdev))) { + /* stealth mode requires a manual probe */ + pci_dev_get(pdev); + if ((rc = drm_get_dev(pdev, &pciidlist[i], driver))) { + pci_dev_put(pdev); + return rc; + } + } + } + DRM_INFO("Used old pci detect: framebuffer loaded\n"); + } + return 0; +} +EXPORT_SYMBOL(drm_init); + +/** + * Called via cleanup_module() at module unload time. + * + * Cleans up all DRM device, calling drm_lastclose(). + * + * \sa drm_init + */ +static void __exit drm_cleanup(drm_device_t * dev) +{ + + DRM_DEBUG("\n"); + if (!dev) { + DRM_ERROR("cleanup called no dev\n"); + return; + } + + drm_lastclose(dev); + + if (dev->maplist) { + drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); + dev->maplist = NULL; + } + + if (!drm_fb_loaded) + pci_disable_device(dev->pdev); + + drm_ctxbitmap_cleanup(dev); + + if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && dev->agp + && dev->agp->agp_mtrr >= 0) { + 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); + } + + if (drm_core_has_AGP(dev) && dev->agp) { + drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS); + dev->agp = NULL; + } + if (dev->driver->unload) + dev->driver->unload(dev); + + drm_put_head(&dev->primary); + if (drm_put_dev(dev)) + DRM_ERROR("Cannot unload module\n"); +} + +void __exit drm_exit(struct drm_driver *driver) +{ + int i; + drm_device_t *dev = NULL; + drm_head_t *head; + + DRM_DEBUG("\n"); + if (drm_fb_loaded) { + for (i = 0; i < cards_limit; i++) { + head = drm_heads[i]; + if (!head) + continue; + if (!head->dev) + continue; + if (head->dev->driver != driver) + continue; + dev = head->dev; + } + if (dev) { + /* release the pci driver */ + if (dev->pdev) + pci_dev_put(dev->pdev); + drm_cleanup(dev); + } + } else + pci_unregister_driver(&driver->pci_driver); + DRM_INFO("Module unloaded\n"); +} +EXPORT_SYMBOL(drm_exit); + +/** File operations structure */ +static struct file_operations drm_stub_fops = { + .owner = THIS_MODULE, + .open = drm_stub_open +}; + +static int __init drm_core_init(void) +{ + int ret = -ENOMEM; + + cards_limit = + (cards_limit < DRM_MAX_MINOR + 1 ? cards_limit : DRM_MAX_MINOR + 1); + drm_heads = drm_calloc(cards_limit, sizeof(*drm_heads), DRM_MEM_STUB); + if (!drm_heads) + goto err_p1; + + if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) + goto err_p1; + + drm_class = drm_sysfs_create(THIS_MODULE, "drm"); + if (IS_ERR(drm_class)) { + printk(KERN_ERR "DRM: Error creating drm class.\n"); + ret = PTR_ERR(drm_class); + goto err_p2; + } + + drm_proc_root = create_proc_entry("dri", S_IFDIR, NULL); + if (!drm_proc_root) { + DRM_ERROR("Cannot create /proc/dri\n"); + ret = -1; + goto err_p3; + } + + drm_mem_init(); + + DRM_INFO("Initialized %s %d.%d.%d %s\n", + CORE_NAME, + CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); + return 0; +err_p3: + drm_sysfs_destroy(drm_class); +err_p2: + unregister_chrdev(DRM_MAJOR, "drm"); + drm_free(drm_heads, sizeof(*drm_heads) * cards_limit, DRM_MEM_STUB); +err_p1: + return ret; +} + +static void __exit drm_core_exit(void) +{ + remove_proc_entry("dri", NULL); + drm_sysfs_destroy(drm_class); + + unregister_chrdev(DRM_MAJOR, "drm"); + + drm_free(drm_heads, sizeof(*drm_heads) * cards_limit, DRM_MEM_STUB); +} + +module_init(drm_core_init); +module_exit(drm_core_exit); + +/** + * Get version information + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg user argument, pointing to a drm_version structure. + * \return zero on success or negative number on failure. + * + * Fills in the version information in \p arg. + */ +static int drm_version(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) +{ + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; + drm_version_t __user *argp = (void __user *)arg; + drm_version_t version; + int len; + + if (copy_from_user(&version, argp, sizeof(version))) + return -EFAULT; + + version.version_major = dev->driver->major; + version.version_minor = dev->driver->minor; + version.version_patchlevel = dev->driver->patchlevel; + DRM_COPY(version.name, dev->driver->name); + DRM_COPY(version.date, dev->driver->date); + DRM_COPY(version.desc, dev->driver->desc); + + if (copy_to_user(argp, &version, sizeof(version))) + return -EFAULT; + return 0; +} + +/** + * Called whenever a process performs an ioctl on /dev/drm. + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg user argument. + * \return zero on success or negative number on failure. + * + * Looks up the ioctl function in the ::ioctls table, checking for root + * previleges if so required, and dispatches to the respective function. + */ +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->head->dev; + drm_ioctl_desc_t *ioctl; + drm_ioctl_t *func; + unsigned int nr = DRM_IOCTL_NR(cmd); + int retcode = -EINVAL; + + 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%lx, auth=%d\n", + current->pid, cmd, nr, (long)old_encode_dev(priv->head->device), + priv->authenticated); + + if (nr < DRIVER_IOCTL_COUNT) + ioctl = &drm_ioctls[nr]; + else if ((nr >= DRM_COMMAND_BASE) + && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) + ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; + else + goto err_i1; + + func = ioctl->func; + if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) /* Local override? */ + func = dev->driver->dma_ioctl; + + if (!func) { + DRM_DEBUG("no function\n"); + retcode = -EINVAL; + } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || + ((ioctl->flags & DRM_AUTH) && !priv->authenticated) || + ((ioctl->flags & DRM_MASTER) && !priv->master)) { + retcode = -EACCES; + } else { + retcode = func(inode, filp, cmd, arg); + } +err_i1: + atomic_dec(&dev->ioctl_count); + if (retcode) + DRM_DEBUG("ret = %x\n", retcode); + return retcode; +} +EXPORT_SYMBOL(drm_ioctl); |