From 9dd3613073aa2491cef440725fdfa0cf1e8f1a42 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Kristian=20H=C3=B8gsberg?= Date: Tue, 17 Nov 2009 09:46:56 -0500 Subject: Drop shared-core, bsd-core, linux-core and scripts subdirs --- linux-core/drm_fops.c | 497 -------------------------------------------------- 1 file changed, 497 deletions(-) delete mode 100644 linux-core/drm_fops.c (limited to 'linux-core/drm_fops.c') diff --git a/linux-core/drm_fops.c b/linux-core/drm_fops.c deleted file mode 100644 index 3e2691a8..00000000 --- a/linux-core/drm_fops.c +++ /dev/null @@ -1,497 +0,0 @@ -/** - * \file drm_fops.c - * File operations for DRM - * - * \author Rickard E. (Rik) Faith - * \author Daryll Strauss - * \author Gareth Hughes - */ - -/* - * Created: Mon Jan 4 08:58:31 1999 by faith@valinux.com - * - * Copyright 1999 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_sarea.h" -#include - -static int drm_open_helper(struct inode *inode, struct file *filp, - struct drm_device * dev); - -static int drm_setup(struct drm_device * dev) -{ - drm_local_map_t *map; - int i; - int ret; - int sareapage; - - if (dev->driver->firstopen) { - ret = dev->driver->firstopen(dev); - if (ret != 0) - return ret; - } - - dev->magicfree.next = NULL; - - /* prebuild the SAREA */ - sareapage = max(SAREA_MAX, PAGE_SIZE); - i = drm_addmap(dev, 0, sareapage, _DRM_SHM, _DRM_CONTAINS_LOCK, &map); - if (i != 0) - return i; - - atomic_set(&dev->ioctl_count, 0); - atomic_set(&dev->vma_count, 0); - dev->buf_use = 0; - atomic_set(&dev->buf_alloc, 0); - - if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { - i = drm_dma_setup(dev); - if (i < 0) - return i; - } - - for (i = 0; i < ARRAY_SIZE(dev->counts); i++) - atomic_set(&dev->counts[i], 0); - - drm_ht_create(&dev->magiclist, DRM_MAGIC_HASH_ORDER); - INIT_LIST_HEAD(&dev->magicfree); - - dev->sigdata.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->context_flag = 0; - dev->interrupt_flag = 0; - dev->dma_flag = 0; - dev->last_context = 0; - dev->last_switch = 0; - dev->last_checked = 0; - init_waitqueue_head(&dev->context_wait); - dev->if_version = 0; - - dev->ctx_start = 0; - dev->lck_start = 0; - - 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; -} - -/** - * Open file. - * - * \param inode device inode - * \param filp file pointer. - * \return zero on success or a negative number on failure. - * - * Searches the DRM device with the same minor number, calls open_helper(), and - * increments the device open count. If the open count was previous at zero, - * i.e., it's the first that the device is open, then calls setup(). - */ -int drm_open(struct inode *inode, struct file *filp) -{ - struct drm_device *dev = NULL; - int minor_id = iminor(inode); - struct drm_minor *minor; - int retcode = 0; - - minor = idr_find(&drm_minors_idr, minor_id); - if (!minor) - return -ENODEV; - - if (!(dev = minor->dev)) - return -ENODEV; - - retcode = drm_open_helper(inode, filp, dev); - if (!retcode) { - atomic_inc(&dev->counts[_DRM_STAT_OPENS]); - spin_lock(&dev->count_lock); - if (!dev->open_count++) { - spin_unlock(&dev->count_lock); - retcode = drm_setup(dev); - goto out; - } - spin_unlock(&dev->count_lock); - } - -out: - return retcode; -} -EXPORT_SYMBOL(drm_open); - -/** - * File \c open operation. - * - * \param inode device inode. - * \param filp file pointer. - * - * Puts the dev->fops corresponding to the device minor number into - * \p filp, call the \c open method, and restore the file operations. - */ -int drm_stub_open(struct inode *inode, struct file *filp) -{ - struct drm_device *dev = NULL; - struct drm_minor *minor; - int minor_id = iminor(inode); - int err = -ENODEV; - const struct file_operations *old_fops; - - DRM_DEBUG("\n"); - - minor = idr_find(&drm_minors_idr, minor_id); - if (!minor) - return -ENODEV; - - if (!(dev = minor->dev)) - return -ENODEV; - - old_fops = filp->f_op; - filp->f_op = fops_get(&dev->driver->fops); - if (filp->f_op->open && (err = filp->f_op->open(inode, filp))) { - fops_put(filp->f_op); - filp->f_op = fops_get(old_fops); - } - fops_put(old_fops); - - return err; -} - -/** - * Check whether DRI will run on this CPU. - * - * \return non-zero if the DRI will run on this CPU, or zero otherwise. - */ -static int drm_cpu_valid(void) -{ -#if defined(__i386__) - if (boot_cpu_data.x86 == 3) - return 0; /* No cmpxchg on a 386 */ -#endif -#if defined(__sparc__) && !defined(__sparc_v9__) - return 0; /* No cmpxchg before v9 sparc. */ -#endif - return 1; -} - -/** - * Called whenever a process opens /dev/drm. - * - * \param inode device inode. - * \param filp file pointer. - * \param dev device. - * \return zero on success or a negative number on failure. - * - * Creates and initializes a drm_file structure for the file private data in \p - * filp and add it into the double linked list in \p dev. - */ -static int drm_open_helper(struct inode *inode, struct file *filp, - struct drm_device * dev) -{ - int minor_id = iminor(inode); - struct drm_file *priv; - int ret; - int i, j; - - if (filp->f_flags & O_EXCL) - return -EBUSY; /* No exclusive opens */ - if (!drm_cpu_valid()) - return -EINVAL; - - DRM_DEBUG("pid = %d, minor = %d\n", current->pid, minor_id); - - priv = drm_alloc(sizeof(*priv), DRM_MEM_FILES); - if (!priv) - return -ENOMEM; - - memset(priv, 0, sizeof(*priv)); - filp->private_data = priv; - priv->filp = filp; - priv->uid = current_euid(); - priv->pid = current->pid; - priv->minor = idr_find(&drm_minors_idr, minor_id); - priv->ioctl_count = 0; - /* for compatibility root is always authenticated */ - priv->authenticated = capable(CAP_SYS_ADMIN); - priv->lock_count = 0; - - INIT_LIST_HEAD(&priv->lhead); - INIT_LIST_HEAD(&priv->refd_objects); - - for (i = 0; i < _DRM_NO_REF_TYPES; ++i) { - ret = drm_ht_create(&priv->refd_object_hash[i], - DRM_FILE_HASH_ORDER); - if (ret) - break; - } - - if (ret) { - for (j = 0; j < i; ++j) - drm_ht_remove(&priv->refd_object_hash[j]); - goto out_free; - } - - if (dev->driver->driver_features & DRIVER_GEM) - drm_gem_open(dev, priv); - - if (dev->driver->open) { - ret = dev->driver->open(dev, priv); - if (ret < 0) - goto out_free; - } - - mutex_lock(&dev->struct_mutex); - if (list_empty(&dev->filelist)) - priv->master = 1; - - list_add(&priv->lhead, &dev->filelist); - mutex_unlock(&dev->struct_mutex); - -#ifdef __alpha__ - /* - * Default the hose - */ - if (!dev->hose) { - struct pci_dev *pci_dev; - pci_dev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, NULL); - if (pci_dev) { - dev->hose = pci_dev->sysdata; - pci_dev_put(pci_dev); - } - if (!dev->hose) { - struct pci_bus *b = pci_bus_b(pci_root_buses.next); - if (b) - dev->hose = b->sysdata; - } - } -#endif - - return 0; - out_free: - drm_free(priv, sizeof(*priv), DRM_MEM_FILES); - filp->private_data = NULL; - return ret; -} - -/** No-op. */ -int drm_fasync(int fd, struct file *filp, int on) -{ - struct drm_file *priv = filp->private_data; - struct drm_device *dev = priv->minor->dev; - int retcode; - - DRM_DEBUG("fd = %d, device = 0x%lx\n", fd, - (long)old_encode_dev(priv->minor->device)); - retcode = fasync_helper(fd, filp, on, &dev->buf_async); - if (retcode < 0) - return retcode; - return 0; -} -EXPORT_SYMBOL(drm_fasync); - -/** - * Release file. - * - * \param inode device inode - * \param file_priv DRM file private. - * \return zero on success or a negative number on failure. - * - * If the hardware lock is held then free it, and take it again for the kernel - * context since it's necessary to reclaim buffers. Unlink the file private - * data from its list and free it. Decreases the open count and if it reaches - * zero calls drm_lastclose(). - */ -int drm_release(struct inode *inode, struct file *filp) -{ - struct drm_file *file_priv = filp->private_data; - struct drm_device *dev = file_priv->minor->dev; - int retcode = 0; - - lock_kernel(); - - DRM_DEBUG("open_count = %d\n", dev->open_count); - - if (dev->driver->preclose) - dev->driver->preclose(dev, file_priv); - - /* ======================================================== - * Begin inline drm_release - */ - - DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", - current->pid, (long)old_encode_dev(file_priv->minor->device), - dev->open_count); - - if (dev->driver->reclaim_buffers_locked && dev->lock.hw_lock) { - if (drm_i_have_hw_lock(dev, file_priv)) { - dev->driver->reclaim_buffers_locked(dev, file_priv); - } else { - unsigned long _end=jiffies + 3*DRM_HZ; - int locked = 0; - - drm_idlelock_take(&dev->lock); - - /* - * Wait for a while. - */ - - do{ - spin_lock_bh(&dev->lock.spinlock); - locked = dev->lock.idle_has_lock; - spin_unlock_bh(&dev->lock.spinlock); - if (locked) - break; - schedule(); - } while (!time_after_eq(jiffies, _end)); - - if (!locked) { - DRM_ERROR("reclaim_buffers_locked() deadlock. Please rework this\n" - "\tdriver to use reclaim_buffers_idlelocked() instead.\n" - "\tI will go on reclaiming the buffers anyway.\n"); - } - - dev->driver->reclaim_buffers_locked(dev, file_priv); - drm_idlelock_release(&dev->lock); - } - } - - if (dev->driver->reclaim_buffers_idlelocked && dev->lock.hw_lock) { - - drm_idlelock_take(&dev->lock); - dev->driver->reclaim_buffers_idlelocked(dev, file_priv); - drm_idlelock_release(&dev->lock); - - } - - if (drm_i_have_hw_lock(dev, file_priv)) { - DRM_DEBUG("File %p released, freeing lock for context %d\n", - filp, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); - - drm_lock_free(&dev->lock, - _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); - } - - - if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && - !dev->driver->reclaim_buffers_locked) { - dev->driver->reclaim_buffers(dev, file_priv); - } - - if (dev->driver->driver_features & DRIVER_GEM) - drm_gem_release(dev, file_priv); - - drm_fasync(-1, filp, 0); - - mutex_lock(&dev->ctxlist_mutex); - - if (!list_empty(&dev->ctxlist)) { - struct drm_ctx_list *pos, *n; - - list_for_each_entry_safe(pos, n, &dev->ctxlist, head) { - if (pos->tag == file_priv && - pos->handle != DRM_KERNEL_CONTEXT) { - if (dev->driver->context_dtor) - dev->driver->context_dtor(dev, - pos->handle); - - drm_ctxbitmap_free(dev, pos->handle); - - list_del(&pos->head); - drm_free(pos, sizeof(*pos), DRM_MEM_CTXLIST); - --dev->ctx_count; - } - } - } - mutex_unlock(&dev->ctxlist_mutex); - - mutex_lock(&dev->struct_mutex); - if (file_priv->remove_auth_on_close == 1) { - struct drm_file *temp; - - list_for_each_entry(temp, &dev->filelist, lhead) - temp->authenticated = 0; - } - list_del(&file_priv->lhead); - mutex_unlock(&dev->struct_mutex); - - if (dev->driver->postclose) - dev->driver->postclose(dev, file_priv); - drm_free(file_priv, sizeof(*file_priv), DRM_MEM_FILES); - - /* ======================================================== - * End inline drm_release - */ - - 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_lastclose(dev); - } - spin_unlock(&dev->count_lock); - - unlock_kernel(); - - return retcode; -} -EXPORT_SYMBOL(drm_release); - -/** No-op. */ -/* This is to deal with older X servers that believe 0 means data is - * available which is not the correct return for a poll function. - * This cannot be fixed until the Xserver is fixed. Xserver will need - * to set a newer interface version to avoid breaking older Xservers. - * Without fixing the Xserver you get: "WaitForSomething(): select: errno=22" - * http://freedesktop.org/bugzilla/show_bug.cgi?id=1505 if you try - * to return the correct response. - */ -unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait) -{ - /* return (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM); */ - return 0; -} -EXPORT_SYMBOL(drm_poll); -- cgit v1.2.3