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; |
} |
|
|