470 lines
11 KiB
C
470 lines
11 KiB
C
/**
|
|
* \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
|
|
*
|
|
* Copyright 2001 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
|
|
* PRECISION INSIGHT 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 <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include "drmP.h"
|
|
#include "drm_core.h"
|
|
|
|
unsigned int drm_debug = 0; /* 1 to enable debug output */
|
|
EXPORT_SYMBOL(drm_debug);
|
|
|
|
MODULE_AUTHOR(CORE_AUTHOR);
|
|
MODULE_DESCRIPTION(CORE_DESC);
|
|
MODULE_LICENSE("GPL and additional rights");
|
|
MODULE_PARM_DESC(debug, "Enable debug output");
|
|
|
|
module_param_named(debug, drm_debug, int, 0600);
|
|
|
|
struct idr drm_minors_idr;
|
|
|
|
struct class *drm_class;
|
|
struct proc_dir_entry *drm_proc_root;
|
|
|
|
static int drm_minor_get_id(struct drm_device *dev, int type)
|
|
{
|
|
int new_id;
|
|
int ret;
|
|
int base = 0, limit = 63;
|
|
|
|
if (type == DRM_MINOR_CONTROL) {
|
|
base += 64;
|
|
limit = base + 127;
|
|
} else if (type == DRM_MINOR_RENDER) {
|
|
base += 128;
|
|
limit = base + 255;
|
|
}
|
|
|
|
again:
|
|
if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
|
|
DRM_ERROR("Out of memory expanding drawable idr\n");
|
|
return -ENOMEM;
|
|
}
|
|
mutex_lock(&dev->struct_mutex);
|
|
ret = idr_get_new_above(&drm_minors_idr, NULL,
|
|
base, &new_id);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
if (ret == -EAGAIN) {
|
|
goto again;
|
|
} else if (ret) {
|
|
return ret;
|
|
}
|
|
|
|
if (new_id >= limit) {
|
|
idr_remove(&drm_minors_idr, new_id);
|
|
return -EINVAL;
|
|
}
|
|
return new_id;
|
|
}
|
|
|
|
struct drm_master *drm_master_create(struct drm_minor *minor)
|
|
{
|
|
struct drm_master *master;
|
|
|
|
master = drm_calloc(1, sizeof(*master), DRM_MEM_DRIVER);
|
|
if (!master)
|
|
return NULL;
|
|
|
|
kref_init(&master->refcount);
|
|
spin_lock_init(&master->lock.spinlock);
|
|
init_waitqueue_head(&master->lock.lock_queue);
|
|
drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
|
|
INIT_LIST_HEAD(&master->magicfree);
|
|
master->minor = minor;
|
|
|
|
list_add_tail(&master->head, &minor->master_list);
|
|
|
|
return master;
|
|
}
|
|
|
|
struct drm_master *drm_master_get(struct drm_master *master)
|
|
{
|
|
kref_get(&master->refcount);
|
|
return master;
|
|
}
|
|
|
|
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;
|
|
|
|
list_del(&master->head);
|
|
|
|
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) {
|
|
drm_free(master->unique, master->unique_size, DRM_MEM_DRIVER);
|
|
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);
|
|
drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
|
|
}
|
|
|
|
drm_ht_remove(&master->magiclist);
|
|
|
|
if (master->lock.hw_lock) {
|
|
if (dev->sigdata.lock == master->lock.hw_lock)
|
|
dev->sigdata.lock = NULL;
|
|
master->lock.hw_lock = NULL;
|
|
master->lock.file_priv = NULL;
|
|
wake_up_interruptible(&master->lock.lock_queue);
|
|
}
|
|
|
|
drm_free(master, sizeof(*master), DRM_MEM_DRIVER);
|
|
}
|
|
|
|
void drm_master_put(struct drm_master **master)
|
|
{
|
|
kref_put(&(*master)->refcount, drm_master_destroy);
|
|
*master = NULL;
|
|
}
|
|
|
|
int drm_setmaster_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
|
|
return -EINVAL;
|
|
|
|
if (!file_priv->master)
|
|
return -EINVAL;
|
|
|
|
if (!file_priv->minor->master &&
|
|
file_priv->minor->master != file_priv->master) {
|
|
mutex_lock(&dev->struct_mutex);
|
|
file_priv->minor->master = drm_master_get(file_priv->master);
|
|
mutex_lock(&dev->struct_mutex);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
if (!file_priv->master)
|
|
return -EINVAL;
|
|
mutex_lock(&dev->struct_mutex);
|
|
drm_master_put(&file_priv->minor->master);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return 0;
|
|
}
|
|
|
|
static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
|
|
const struct pci_device_id *ent,
|
|
struct drm_driver *driver)
|
|
{
|
|
int retcode;
|
|
|
|
INIT_LIST_HEAD(&dev->filelist);
|
|
INIT_LIST_HEAD(&dev->ctxlist);
|
|
INIT_LIST_HEAD(&dev->vmalist);
|
|
INIT_LIST_HEAD(&dev->maplist);
|
|
|
|
spin_lock_init(&dev->count_lock);
|
|
spin_lock_init(&dev->drw_lock);
|
|
init_timer(&dev->timer);
|
|
mutex_init(&dev->struct_mutex);
|
|
mutex_init(&dev->ctxlist_mutex);
|
|
|
|
idr_init(&dev->drw_idr);
|
|
|
|
dev->pdev = pdev;
|
|
dev->pci_device = pdev->device;
|
|
dev->pci_vendor = pdev->vendor;
|
|
|
|
#ifdef __alpha__
|
|
dev->hose = pdev->sysdata;
|
|
#endif
|
|
|
|
if (drm_ht_create(&dev->map_hash, 12)) {
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* the DRM has 6 basic counters */
|
|
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;
|
|
|
|
dev->driver = driver;
|
|
|
|
if (drm_core_has_AGP(dev)) {
|
|
if (drm_device_is_agp(dev))
|
|
dev->agp = drm_agp_init(dev);
|
|
if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
|
|
&& (dev->agp == NULL)) {
|
|
DRM_ERROR("Cannot initialize the agpgart module.\n");
|
|
retcode = -EINVAL;
|
|
goto error_out_unreg;
|
|
}
|
|
if (drm_core_has_MTRR(dev)) {
|
|
if (dev->agp)
|
|
dev->agp->agp_mtrr =
|
|
mtrr_add(dev->agp->agp_info.aper_base,
|
|
dev->agp->agp_info.aper_size *
|
|
1024 * 1024, MTRR_TYPE_WRCOMB, 1);
|
|
}
|
|
}
|
|
|
|
|
|
retcode = drm_ctxbitmap_init(dev);
|
|
if (retcode) {
|
|
DRM_ERROR("Cannot allocate memory for context bitmap.\n");
|
|
goto error_out_unreg;
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_out_unreg:
|
|
drm_lastclose(dev);
|
|
return retcode;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get a secondary minor number.
|
|
*
|
|
* \param dev device data structure
|
|
* \param sec-minor structure to hold the assigned minor
|
|
* \return negative number on failure.
|
|
*
|
|
* Search an empty entry and initialize it to the given parameters, and
|
|
* create the proc init entry via proc_init(). This routines assigns
|
|
* minor numbers to secondary heads of multi-headed cards
|
|
*/
|
|
static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
|
|
{
|
|
struct drm_minor *new_minor;
|
|
int ret;
|
|
int minor_id;
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
minor_id = drm_minor_get_id(dev, type);
|
|
if (minor_id < 0)
|
|
return minor_id;
|
|
|
|
new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
|
|
if (!new_minor) {
|
|
ret = -ENOMEM;
|
|
goto err_idr;
|
|
}
|
|
|
|
new_minor->type = type;
|
|
new_minor->device = MKDEV(DRM_MAJOR, minor_id);
|
|
new_minor->dev = dev;
|
|
new_minor->index = minor_id;
|
|
INIT_LIST_HEAD(&new_minor->master_list);
|
|
|
|
idr_replace(&drm_minors_idr, new_minor, minor_id);
|
|
|
|
if (type == DRM_MINOR_LEGACY) {
|
|
ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
|
|
if (ret) {
|
|
DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
|
|
goto err_mem;
|
|
}
|
|
} else
|
|
new_minor->dev_root = NULL;
|
|
|
|
ret = drm_sysfs_device_add(new_minor);
|
|
if (ret) {
|
|
printk(KERN_ERR
|
|
"DRM: Error sysfs_device_add.\n");
|
|
goto err_g2;
|
|
}
|
|
*minor = new_minor;
|
|
|
|
DRM_DEBUG("new minor assigned %d\n", minor_id);
|
|
return 0;
|
|
|
|
|
|
err_g2:
|
|
if (new_minor->type == DRM_MINOR_LEGACY)
|
|
drm_proc_cleanup(new_minor, drm_proc_root);
|
|
err_mem:
|
|
kfree(new_minor);
|
|
err_idr:
|
|
idr_remove(&drm_minors_idr, minor_id);
|
|
*minor = NULL;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Register.
|
|
*
|
|
* \param pdev - PCI device structure
|
|
* \param ent entry from the PCI ID table with device type flags
|
|
* \return zero on success or a negative number on failure.
|
|
*
|
|
* Attempt to gets inter module "drm" information. If we are first
|
|
* then register the character device and inter module information.
|
|
* Try and register, if we fail to register, backout previous work.
|
|
*/
|
|
int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
|
|
struct drm_driver *driver)
|
|
{
|
|
struct drm_device *dev;
|
|
int ret;
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret)
|
|
goto err_g1;
|
|
|
|
pci_set_master(pdev);
|
|
if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
|
|
printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
|
|
goto err_g2;
|
|
}
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
|
|
if (ret)
|
|
goto err_g2;
|
|
}
|
|
|
|
if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
|
|
goto err_g3;
|
|
|
|
if (dev->driver->load) {
|
|
ret = dev->driver->load(dev, ent->driver_data);
|
|
if (ret)
|
|
goto err_g3;
|
|
}
|
|
|
|
/* setup the grouping for the legacy output */
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
|
|
if (ret)
|
|
goto err_g3;
|
|
}
|
|
|
|
list_add_tail(&dev->driver_item, &driver->device_list);
|
|
|
|
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
|
|
driver->name, driver->major, driver->minor, driver->patchlevel,
|
|
driver->date, dev->primary->index);
|
|
|
|
return 0;
|
|
|
|
err_g3:
|
|
drm_put_minor(&dev->primary);
|
|
err_g2:
|
|
pci_disable_device(pdev);
|
|
err_g1:
|
|
drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Put a device minor number.
|
|
*
|
|
* \param dev device data structure
|
|
* \return always zero
|
|
*
|
|
* Cleans up the proc resources. If it is the last minor then release the foreign
|
|
* "drm" data, otherwise unregisters the "drm" data, frees the dev list and
|
|
* unregisters the character device.
|
|
*/
|
|
int drm_put_dev(struct drm_device * dev)
|
|
{
|
|
DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
|
|
|
|
if (dev->devname) {
|
|
drm_free(dev->devname, strlen(dev->devname) + 1,
|
|
DRM_MEM_DRIVER);
|
|
dev->devname = NULL;
|
|
}
|
|
drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Put a secondary minor number.
|
|
*
|
|
* \param sec_minor - structure to be released
|
|
* \return always zero
|
|
*
|
|
* Cleans up the proc resources. Not legal for this to be the
|
|
* last minor released.
|
|
*
|
|
*/
|
|
int drm_put_minor(struct drm_minor **minor_p)
|
|
{
|
|
struct drm_minor *minor = *minor_p;
|
|
|
|
DRM_DEBUG("release secondary minor %d\n", minor->index);
|
|
|
|
if (minor->type == DRM_MINOR_LEGACY)
|
|
drm_proc_cleanup(minor, drm_proc_root);
|
|
drm_sysfs_device_remove(minor);
|
|
|
|
idr_remove(&drm_minors_idr, minor->index);
|
|
|
|
kfree(minor);
|
|
*minor_p = NULL;
|
|
return 0;
|
|
}
|