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path: root/drivers/char/drm/drm_stub.c
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Diffstat (limited to 'drivers/char/drm/drm_stub.c')
-rw-r--r--drivers/char/drm/drm_stub.c122
1 files changed, 67 insertions, 55 deletions
diff --git a/drivers/char/drm/drm_stub.c b/drivers/char/drm/drm_stub.c
index 48829a1a086a..60b6f8e8bf69 100644
--- a/drivers/char/drm/drm_stub.c
+++ b/drivers/char/drm/drm_stub.c
@@ -37,35 +37,37 @@
#include "drm_core.h"
unsigned int drm_cards_limit = 16; /* Enough for one machine */
-unsigned int drm_debug = 0; /* 1 to enable debug output */
+unsigned int drm_debug = 0; /* 1 to enable debug output */
EXPORT_SYMBOL(drm_debug);
-MODULE_AUTHOR( CORE_AUTHOR );
-MODULE_DESCRIPTION( CORE_DESC );
+MODULE_AUTHOR(CORE_AUTHOR);
+MODULE_DESCRIPTION(CORE_DESC);
MODULE_LICENSE("GPL and additional rights");
MODULE_PARM_DESC(cards_limit, "Maximum number of graphics cards");
MODULE_PARM_DESC(debug, "Enable debug output");
module_param_named(cards_limit, drm_cards_limit, int, 0444);
-module_param_named(debug, drm_debug, int, 0666);
+module_param_named(debug, drm_debug, int, 0600);
drm_head_t **drm_heads;
struct drm_sysfs_class *drm_class;
struct proc_dir_entry *drm_proc_root;
-static int drm_fill_in_dev(drm_device_t *dev, struct pci_dev *pdev, const struct pci_device_id *ent, struct drm_driver *driver)
+static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev,
+ const struct pci_device_id *ent,
+ struct drm_driver *driver)
{
int retcode;
spin_lock_init(&dev->count_lock);
- init_timer( &dev->timer );
- sema_init( &dev->struct_sem, 1 );
- sema_init( &dev->ctxlist_sem, 1 );
+ init_timer(&dev->timer);
+ sema_init(&dev->struct_sem, 1);
+ sema_init(&dev->ctxlist_sem, 1);
- dev->pdev = pdev;
+ dev->pdev = pdev;
#ifdef __alpha__
- dev->hose = pdev->sysdata;
+ dev->hose = pdev->sysdata;
dev->pci_domain = dev->hose->bus->number;
#else
dev->pci_domain = 0;
@@ -75,46 +77,53 @@ static int drm_fill_in_dev(drm_device_t *dev, struct pci_dev *pdev, const struct
dev->pci_func = PCI_FUNC(pdev->devfn);
dev->irq = pdev->irq;
+ dev->maplist = drm_calloc(1, sizeof(*dev->maplist), DRM_MEM_MAPS);
+ if (dev->maplist == NULL)
+ return -ENOMEM;
+ INIT_LIST_HEAD(&dev->maplist->head);
+
/* 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->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 (dev->driver->preinit)
if ((retcode = dev->driver->preinit(dev, ent->driver_data)))
goto error_out_unreg;
if (drm_core_has_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" );
+ 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 );
+ 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" );
+ retcode = drm_ctxbitmap_init(dev);
+ if (retcode) {
+ DRM_ERROR("Cannot allocate memory for context bitmap.\n");
goto error_out_unreg;
}
return 0;
-
-error_out_unreg:
+
+ error_out_unreg:
drm_takedown(dev);
return retcode;
}
@@ -134,7 +143,7 @@ int drm_stub_open(struct inode *inode, struct file *filp)
int minor = iminor(inode);
int err = -ENODEV;
struct file_operations *old_fops;
-
+
DRM_DEBUG("\n");
if (!((minor >= 0) && (minor < drm_cards_limit)))
@@ -142,7 +151,7 @@ int drm_stub_open(struct inode *inode, struct file *filp)
if (!drm_heads[minor])
return -ENODEV;
-
+
if (!(dev = drm_heads[minor]->dev))
return -ENODEV;
@@ -168,7 +177,7 @@ int drm_stub_open(struct inode *inode, struct file *filp)
* create the proc init entry via proc_init(). This routines assigns
* minor numbers to secondary heads of multi-headed cards
*/
-static int drm_get_head(drm_device_t *dev, drm_head_t *head)
+static int drm_get_head(drm_device_t * dev, drm_head_t * head)
{
drm_head_t **heads = drm_heads;
int ret;
@@ -178,26 +187,27 @@ static int drm_get_head(drm_device_t *dev, drm_head_t *head)
for (minor = 0; minor < drm_cards_limit; minor++, heads++) {
if (!*heads) {
-
+
*head = (drm_head_t) {
- .dev = dev,
- .device = MKDEV(DRM_MAJOR, minor),
- .minor = minor,
- };
-
- if ((ret = drm_proc_init(dev, minor, drm_proc_root, &head->dev_root))) {
- printk (KERN_ERR "DRM: Failed to initialize /proc/dri.\n");
+ .dev = dev,.device =
+ MKDEV(DRM_MAJOR, minor),.minor = minor,};
+
+ if ((ret =
+ drm_proc_init(dev, minor, drm_proc_root,
+ &head->dev_root))) {
+ printk(KERN_ERR
+ "DRM: Failed to initialize /proc/dri.\n");
goto err_g1;
}
-
head->dev_class = drm_sysfs_device_add(drm_class,
MKDEV(DRM_MAJOR,
minor),
&dev->pdev->dev,
"card%d", minor);
if (IS_ERR(head->dev_class)) {
- printk(KERN_ERR "DRM: Error sysfs_device_add.\n");
+ printk(KERN_ERR
+ "DRM: Error sysfs_device_add.\n");
ret = PTR_ERR(head->dev_class);
goto err_g2;
}
@@ -209,13 +219,14 @@ static int drm_get_head(drm_device_t *dev, drm_head_t *head)
}
DRM_ERROR("out of minors\n");
return -ENOMEM;
-err_g2:
+ err_g2:
drm_proc_cleanup(minor, drm_proc_root, head->dev_root);
-err_g1:
- *head = (drm_head_t) {.dev = NULL};
+ err_g1:
+ *head = (drm_head_t) {
+ .dev = NULL};
return ret;
}
-
+
/**
* Register.
*
@@ -228,7 +239,7 @@ err_g1:
* 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_driver *driver)
{
drm_device_t *dev;
int ret;
@@ -255,10 +266,11 @@ int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
return 0;
-err_g1:
+ err_g1:
drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
return ret;
}
+
EXPORT_SYMBOL(drm_get_dev);
/**
@@ -299,19 +311,19 @@ int drm_put_dev(drm_device_t * dev)
* last minor released.
*
*/
-int drm_put_head(drm_head_t *head)
+int drm_put_head(drm_head_t * head)
{
int minor = head->minor;
-
+
DRM_DEBUG("release secondary minor %d\n", minor);
-
+
drm_proc_cleanup(minor, drm_proc_root, head->dev_root);
drm_sysfs_device_remove(MKDEV(DRM_MAJOR, head->minor));
-
- *head = (drm_head_t){.dev = NULL};
+
+ *head = (drm_head_t) {
+ .dev = NULL};
drm_heads[minor] = NULL;
-
+
return 0;
}
-
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.