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drm: reorganise minor number handling using backported modesetting code.

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rips out the head crap and replaces it with an idr and drm_minor structure

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2008-04-21 16:47:32 +10:00
committed by Dave Airlie
parent 7b832b56bd
commit 2c14f28be2
10 changed files with 230 additions and 184 deletions
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drivers/char/drm/drm_drv.c
+28 -32
View File
@@ -313,35 +313,36 @@ static void drm_cleanup(struct drm_device * dev)
drm_ht_remove(&dev->map_hash);
drm_ctxbitmap_cleanup(dev);
drm_put_head(&dev->primary);
drm_put_minor(&dev->primary);
if (drm_put_dev(dev))
DRM_ERROR("Cannot unload module\n");
}
int drm_minors_cleanup(int id, void *ptr, void *data)
{
struct drm_minor *minor = ptr;
struct drm_device *dev;
struct drm_driver *driver = data;
dev = minor->dev;
if (minor->dev->driver != driver)
return 0;
if (minor->type != DRM_MINOR_LEGACY)
return 0;
if (dev)
pci_dev_put(dev->pdev);
drm_cleanup(dev);
return 1;
}
void drm_exit(struct drm_driver *driver)
{
int i;
struct drm_device *dev = NULL;
struct drm_head *head;
DRM_DEBUG("\n");
for (i = 0; i < drm_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);
}
}
idr_for_each(&drm_minors_idr, &drm_minors_cleanup, driver);
DRM_INFO("Module unloaded\n");
}
@@ -357,13 +358,7 @@ static int __init drm_core_init(void)
{
int ret = -ENOMEM;
drm_cards_limit =
(drm_cards_limit <
DRM_MAX_MINOR + 1 ? drm_cards_limit : DRM_MAX_MINOR + 1);
drm_heads =
drm_calloc(drm_cards_limit, sizeof(*drm_heads), DRM_MEM_STUB);
if (!drm_heads)
goto err_p1;
idr_init(&drm_minors_idr);
if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
goto err_p1;
@@ -391,7 +386,8 @@ err_p3:
drm_sysfs_destroy();
err_p2:
unregister_chrdev(DRM_MAJOR, "drm");
drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB);
idr_destroy(&drm_minors_idr);
err_p1:
return ret;
}
@@ -403,7 +399,7 @@ static void __exit drm_core_exit(void)
unregister_chrdev(DRM_MAJOR, "drm");
drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB);
idr_destroy(&drm_minors_idr);
}
module_init(drm_core_init);
@@ -452,7 +448,7 @@ int drm_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
struct drm_file *file_priv = filp->private_data;
struct drm_device *dev = file_priv->head->dev;
struct drm_device *dev = file_priv->minor->dev;
struct drm_ioctl_desc *ioctl;
drm_ioctl_t *func;
unsigned int nr = DRM_IOCTL_NR(cmd);
@@ -465,7 +461,7 @@ int drm_ioctl(struct inode *inode, struct file *filp,
DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
task_pid_nr(current), cmd, nr,
(long)old_encode_dev(file_priv->head->device),
(long)old_encode_dev(file_priv->minor->device),
file_priv->authenticated);
if ((nr >= DRM_CORE_IOCTL_COUNT) &&