| 1,10 → 1,3 |
|---|
| /** |
| * \file drm_stub.h |
| * Stub support |
| * |
| * \author Rickard E. (Rik) Faith <faith@valinux.com> |
| */ |
| |
| /* |
| * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org |
| * |
| 11,6 → 4,8 |
|---|
| * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California. |
| * All Rights Reserved. |
| * |
| * Author Rickard E. (Rik) Faith <faith@valinux.com> |
| * |
| * 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 |
| 31,6 → 26,7 |
|---|
| * DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #include <linux/fs.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/slab.h> |
| 48,6 → 44,10 |
|---|
| unsigned int drm_rnodes = 0; /* 1 to enable experimental render nodes API */ |
| EXPORT_SYMBOL(drm_rnodes); |
| |
| /* 1 to allow user space to request universal planes (experimental) */ |
| unsigned int drm_universal_planes = 0; |
| EXPORT_SYMBOL(drm_universal_planes); |
| |
| unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ |
| EXPORT_SYMBOL(drm_vblank_offdelay); |
| |
| 54,6 → 54,12 |
|---|
| unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ |
| EXPORT_SYMBOL(drm_timestamp_precision); |
| |
| /* |
| * Default to use monotonic timestamps for wait-for-vblank and page-flip |
| * complete events. |
| */ |
| unsigned int drm_timestamp_monotonic = 1; |
| |
| struct idr drm_minors_idr; |
| int drm_err(const char *func, const char *format, ...) |
| { |
| 74,10 → 80,7 |
|---|
| } |
| EXPORT_SYMBOL(drm_err); |
| |
| void drm_ut_debug_printk(unsigned int request_level, |
| const char *prefix, |
| const char *function_name, |
| const char *format, ...) |
| void drm_ut_debug_printk(const char *function_name, const char *format, ...) |
| { |
| struct va_format vaf; |
| va_list args; |
| 92,11 → 95,415 |
|---|
| } |
| EXPORT_SYMBOL(drm_ut_debug_printk); |
| |
| #if 0 |
| struct drm_master *drm_master_create(struct drm_minor *minor) |
| { |
| struct drm_master *master; |
| |
| master = kzalloc(sizeof(*master), GFP_KERNEL); |
| if (!master) |
| return NULL; |
| |
| kref_init(&master->refcount); |
| spin_lock_init(&master->lock.spinlock); |
| init_waitqueue_head(&master->lock.lock_queue); |
| if (drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER)) { |
| kfree(master); |
| return NULL; |
| } |
| INIT_LIST_HEAD(&master->magicfree); |
| master->minor = minor; |
| |
| return master; |
| } |
| |
| struct drm_master *drm_master_get(struct drm_master *master) |
| { |
| kref_get(&master->refcount); |
| return master; |
| } |
| EXPORT_SYMBOL(drm_master_get); |
| |
| static void drm_master_destroy(struct kref *kref) |
| { |
| struct drm_master *master = container_of(kref, struct drm_master, refcount); |
| struct drm_magic_entry *pt, *next; |
| struct drm_device *dev = master->minor->dev; |
| struct drm_map_list *r_list, *list_temp; |
| |
| mutex_lock(&dev->struct_mutex); |
| if (dev->driver->master_destroy) |
| dev->driver->master_destroy(dev, master); |
| |
| list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) { |
| if (r_list->master == master) { |
| drm_rmmap_locked(dev, r_list->map); |
| r_list = NULL; |
| } |
| } |
| |
| if (master->unique) { |
| kfree(master->unique); |
| master->unique = NULL; |
| master->unique_len = 0; |
| } |
| |
| list_for_each_entry_safe(pt, next, &master->magicfree, head) { |
| list_del(&pt->head); |
| drm_ht_remove_item(&master->magiclist, &pt->hash_item); |
| kfree(pt); |
| } |
| |
| drm_ht_remove(&master->magiclist); |
| |
| mutex_unlock(&dev->struct_mutex); |
| kfree(master); |
| } |
| |
| void drm_master_put(struct drm_master **master) |
| { |
| kref_put(&(*master)->refcount, drm_master_destroy); |
| *master = NULL; |
| } |
| EXPORT_SYMBOL(drm_master_put); |
| |
| int drm_setmaster_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| int ret = 0; |
| |
| mutex_lock(&dev->master_mutex); |
| if (file_priv->is_master) |
| goto out_unlock; |
| |
| if (file_priv->minor->master) { |
| ret = -EINVAL; |
| goto out_unlock; |
| } |
| |
| if (!file_priv->master) { |
| ret = -EINVAL; |
| goto out_unlock; |
| } |
| |
| file_priv->minor->master = drm_master_get(file_priv->master); |
| file_priv->is_master = 1; |
| if (dev->driver->master_set) { |
| ret = dev->driver->master_set(dev, file_priv, false); |
| if (unlikely(ret != 0)) { |
| file_priv->is_master = 0; |
| drm_master_put(&file_priv->minor->master); |
| } |
| } |
| |
| out_unlock: |
| mutex_unlock(&dev->master_mutex); |
| return ret; |
| } |
| |
| int drm_dropmaster_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| int ret = -EINVAL; |
| |
| mutex_lock(&dev->master_mutex); |
| if (!file_priv->is_master) |
| goto out_unlock; |
| |
| if (!file_priv->minor->master) |
| goto out_unlock; |
| |
| ret = 0; |
| if (dev->driver->master_drop) |
| dev->driver->master_drop(dev, file_priv, false); |
| drm_master_put(&file_priv->minor->master); |
| file_priv->is_master = 0; |
| |
| out_unlock: |
| mutex_unlock(&dev->master_mutex); |
| return ret; |
| } |
| |
| /* |
| * DRM Minors |
| * A DRM device can provide several char-dev interfaces on the DRM-Major. Each |
| * of them is represented by a drm_minor object. Depending on the capabilities |
| * of the device-driver, different interfaces are registered. |
| * |
| * Minors can be accessed via dev->$minor_name. This pointer is either |
| * NULL or a valid drm_minor pointer and stays valid as long as the device is |
| * valid. This means, DRM minors have the same life-time as the underlying |
| * device. However, this doesn't mean that the minor is active. Minors are |
| * registered and unregistered dynamically according to device-state. |
| */ |
| |
| static struct drm_minor **drm_minor_get_slot(struct drm_device *dev, |
| unsigned int type) |
| { |
| switch (type) { |
| case DRM_MINOR_LEGACY: |
| return &dev->primary; |
| case DRM_MINOR_RENDER: |
| return &dev->render; |
| case DRM_MINOR_CONTROL: |
| return &dev->control; |
| default: |
| return NULL; |
| } |
| } |
| |
| static int drm_minor_alloc(struct drm_device *dev, unsigned int type) |
| { |
| struct drm_minor *minor; |
| |
| minor = kzalloc(sizeof(*minor), GFP_KERNEL); |
| if (!minor) |
| return -ENOMEM; |
| |
| minor->type = type; |
| minor->dev = dev; |
| |
| *drm_minor_get_slot(dev, type) = minor; |
| return 0; |
| } |
| |
| static void drm_minor_free(struct drm_device *dev, unsigned int type) |
| { |
| struct drm_minor **slot; |
| |
| slot = drm_minor_get_slot(dev, type); |
| if (*slot) { |
| drm_mode_group_destroy(&(*slot)->mode_group); |
| kfree(*slot); |
| *slot = NULL; |
| } |
| } |
| |
| static int drm_minor_register(struct drm_device *dev, unsigned int type) |
| { |
| struct drm_minor *new_minor; |
| unsigned long flags; |
| int ret; |
| int minor_id; |
| |
| DRM_DEBUG("\n"); |
| |
| new_minor = *drm_minor_get_slot(dev, type); |
| if (!new_minor) |
| return 0; |
| |
| idr_preload(GFP_KERNEL); |
| spin_lock_irqsave(&drm_minor_lock, flags); |
| minor_id = idr_alloc(&drm_minors_idr, |
| NULL, |
| 64 * type, |
| 64 * (type + 1), |
| GFP_NOWAIT); |
| spin_unlock_irqrestore(&drm_minor_lock, flags); |
| idr_preload_end(); |
| |
| if (minor_id < 0) |
| return minor_id; |
| |
| new_minor->index = minor_id; |
| |
| ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root); |
| if (ret) { |
| DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n"); |
| goto err_id; |
| } |
| |
| ret = drm_sysfs_device_add(new_minor); |
| if (ret) { |
| DRM_ERROR("DRM: Error sysfs_device_add.\n"); |
| goto err_debugfs; |
| } |
| |
| /* replace NULL with @minor so lookups will succeed from now on */ |
| spin_lock_irqsave(&drm_minor_lock, flags); |
| idr_replace(&drm_minors_idr, new_minor, new_minor->index); |
| spin_unlock_irqrestore(&drm_minor_lock, flags); |
| |
| DRM_DEBUG("new minor assigned %d\n", minor_id); |
| return 0; |
| |
| err_debugfs: |
| drm_debugfs_cleanup(new_minor); |
| err_id: |
| spin_lock_irqsave(&drm_minor_lock, flags); |
| idr_remove(&drm_minors_idr, minor_id); |
| spin_unlock_irqrestore(&drm_minor_lock, flags); |
| new_minor->index = 0; |
| return ret; |
| } |
| |
| static void drm_minor_unregister(struct drm_device *dev, unsigned int type) |
| { |
| struct drm_minor *minor; |
| unsigned long flags; |
| |
| minor = *drm_minor_get_slot(dev, type); |
| if (!minor || !minor->kdev) |
| return; |
| |
| spin_lock_irqsave(&drm_minor_lock, flags); |
| idr_remove(&drm_minors_idr, minor->index); |
| spin_unlock_irqrestore(&drm_minor_lock, flags); |
| minor->index = 0; |
| |
| drm_debugfs_cleanup(minor); |
| drm_sysfs_device_remove(minor); |
| } |
| |
| /** |
| * drm_minor_acquire - Acquire a DRM minor |
| * @minor_id: Minor ID of the DRM-minor |
| * |
| * Looks up the given minor-ID and returns the respective DRM-minor object. The |
| * refence-count of the underlying device is increased so you must release this |
| * object with drm_minor_release(). |
| * |
| * As long as you hold this minor, it is guaranteed that the object and the |
| * minor->dev pointer will stay valid! However, the device may get unplugged and |
| * unregistered while you hold the minor. |
| * |
| * Returns: |
| * Pointer to minor-object with increased device-refcount, or PTR_ERR on |
| * failure. |
| */ |
| struct drm_minor *drm_minor_acquire(unsigned int minor_id) |
| { |
| struct drm_minor *minor; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&drm_minor_lock, flags); |
| minor = idr_find(&drm_minors_idr, minor_id); |
| if (minor) |
| drm_dev_ref(minor->dev); |
| spin_unlock_irqrestore(&drm_minor_lock, flags); |
| |
| if (!minor) { |
| return ERR_PTR(-ENODEV); |
| } else if (drm_device_is_unplugged(minor->dev)) { |
| drm_dev_unref(minor->dev); |
| return ERR_PTR(-ENODEV); |
| } |
| |
| return minor; |
| } |
| |
| /** |
| * drm_minor_release - Release DRM minor |
| * @minor: Pointer to DRM minor object |
| * |
| * Release a minor that was previously acquired via drm_minor_acquire(). |
| */ |
| void drm_minor_release(struct drm_minor *minor) |
| { |
| drm_dev_unref(minor->dev); |
| } |
| |
| /** |
| * drm_put_dev - Unregister and release a DRM device |
| * @dev: DRM device |
| * |
| * Called at module unload time or when a PCI device is unplugged. |
| * |
| * Use of this function is discouraged. It will eventually go away completely. |
| * Please use drm_dev_unregister() and drm_dev_unref() explicitly instead. |
| * |
| * Cleans up all DRM device, calling drm_lastclose(). |
| */ |
| void drm_put_dev(struct drm_device *dev) |
| { |
| DRM_DEBUG("\n"); |
| |
| if (!dev) { |
| DRM_ERROR("cleanup called no dev\n"); |
| return; |
| } |
| |
| drm_dev_unregister(dev); |
| drm_dev_unref(dev); |
| } |
| EXPORT_SYMBOL(drm_put_dev); |
| |
| void drm_unplug_dev(struct drm_device *dev) |
| { |
| /* for a USB device */ |
| drm_minor_unregister(dev, DRM_MINOR_LEGACY); |
| drm_minor_unregister(dev, DRM_MINOR_RENDER); |
| drm_minor_unregister(dev, DRM_MINOR_CONTROL); |
| |
| mutex_lock(&drm_global_mutex); |
| |
| drm_device_set_unplugged(dev); |
| |
| if (dev->open_count == 0) { |
| drm_put_dev(dev); |
| } |
| mutex_unlock(&drm_global_mutex); |
| } |
| EXPORT_SYMBOL(drm_unplug_dev); |
| |
| /* |
| * DRM internal mount |
| * We want to be able to allocate our own "struct address_space" to control |
| * memory-mappings in VRAM (or stolen RAM, ...). However, core MM does not allow |
| * stand-alone address_space objects, so we need an underlying inode. As there |
| * is no way to allocate an independent inode easily, we need a fake internal |
| * VFS mount-point. |
| * |
| * The drm_fs_inode_new() function allocates a new inode, drm_fs_inode_free() |
| * frees it again. You are allowed to use iget() and iput() to get references to |
| * the inode. But each drm_fs_inode_new() call must be paired with exactly one |
| * drm_fs_inode_free() call (which does not have to be the last iput()). |
| * We use drm_fs_inode_*() to manage our internal VFS mount-point and share it |
| * between multiple inode-users. You could, technically, call |
| * iget() + drm_fs_inode_free() directly after alloc and sometime later do an |
| * iput(), but this way you'd end up with a new vfsmount for each inode. |
| */ |
| |
| static int drm_fs_cnt; |
| static struct vfsmount *drm_fs_mnt; |
| |
| static const struct dentry_operations drm_fs_dops = { |
| .d_dname = simple_dname, |
| }; |
| |
| static const struct super_operations drm_fs_sops = { |
| .statfs = simple_statfs, |
| }; |
| |
| static struct dentry *drm_fs_mount(struct file_system_type *fs_type, int flags, |
| const char *dev_name, void *data) |
| { |
| return mount_pseudo(fs_type, |
| "drm:", |
| &drm_fs_sops, |
| &drm_fs_dops, |
| 0x010203ff); |
| } |
| |
| static struct file_system_type drm_fs_type = { |
| .name = "drm", |
| .owner = THIS_MODULE, |
| .mount = drm_fs_mount, |
| .kill_sb = kill_anon_super, |
| }; |
| |
| #endif |
| |
| |
| |
| |
| |
| int drm_fill_in_dev(struct drm_device *dev, |
| const struct pci_device_id *ent, |
| struct drm_driver *driver) |
| { |
| int retcode; |
| int ret; |
| dev->driver = driver; |
| |
| INIT_LIST_HEAD(&dev->filelist); |
| INIT_LIST_HEAD(&dev->ctxlist); |
| 104,7 → 511,7 |
|---|
| INIT_LIST_HEAD(&dev->maplist); |
| INIT_LIST_HEAD(&dev->vblank_event_list); |
| |
| spin_lock_init(&dev->count_lock); |
| spin_lock_init(&dev->buf_lock); |
| spin_lock_init(&dev->event_lock); |
| mutex_init(&dev->struct_mutex); |
| mutex_init(&dev->ctxlist_mutex); |
| 113,22 → 520,21 |
|---|
| // return -ENOMEM; |
| // } |
| |
| dev->driver = driver; |
| |
| |
| if (driver->driver_features & DRIVER_GEM) { |
| retcode = drm_gem_init(dev); |
| if (retcode) { |
| DRM_ERROR("Cannot initialize graphics execution " |
| "manager (GEM)\n"); |
| goto error_out_unreg; |
| ret = drm_gem_init(dev); |
| if (ret) { |
| DRM_ERROR("Cannot initialize graphics execution manager (GEM)\n"); |
| goto err_ctxbitmap; |
| } |
| } |
| |
| return 0; |
| |
| error_out_unreg: |
| err_ctxbitmap: |
| // drm_lastclose(dev); |
| return retcode; |
| return ret; |
| } |
| EXPORT_SYMBOL(drm_fill_in_dev); |
| /** |
| 160,15 → 566,16 |
|---|
| asm volatile("clflush %0" : "+m" (*(volatile char*)__p)); |
| } |
| |
| void |
| drm_clflush_virt_range(char *addr, unsigned long length) |
| void drm_clflush_virt_range(void *addr, unsigned long length) |
| { |
| char *end = addr + length; |
| char *tmp = addr; |
| char *end = tmp + length; |
| mb(); |
| for (; addr < end; addr += x86_clflush_size) |
| clflush(addr); |
| for (; tmp < end; tmp += x86_clflush_size) |
| clflush(tmp); |
| clflush(end - 1); |
| mb(); |
| return; |
| } |
| |
| |