summaryrefslogtreecommitdiff
path: root/linux-core/drm_drv.c
diff options
context:
space:
mode:
Diffstat (limited to 'linux-core/drm_drv.c')
-rw-r--r--linux-core/drm_drv.c140
1 files changed, 94 insertions, 46 deletions
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index df20e2b4..bd0520e5 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -62,6 +62,17 @@
static void __exit drm_cleanup( drm_device_t *dev );
+/** Stub information */
+struct drm_stub_info {
+ int (*info_register)(const char *name, struct file_operations *fops,
+ drm_device_t *dev);
+ int (*info_unregister)(int minor);
+ struct class_simple *drm_class;
+ int *info_count;
+ struct proc_dir_entry *proc_root;
+};
+extern struct drm_stub_info DRM(stub_info);
+
#ifndef MODULE
/** Use an additional macro to avoid preprocessor troubles */
#define DRM_OPTIONS_FUNC DRM(options)
@@ -80,6 +91,9 @@ __setup( DRIVER_NAME "=", DRM_OPTIONS_FUNC );
#undef DRM_OPTIONS_FUNC
#endif
+#define MAX_DEVICES 4
+drm_device_t DRM(device)[MAX_DEVICES];
+int DRM(numdevs) = 0;
int DRM(fb_loaded) = 0;
struct file_operations DRM(fops) = {
@@ -162,6 +176,15 @@ drm_ioctl_desc_t DRM(ioctls)[] = {
#define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( DRM(ioctls) )
+#ifdef MODULE
+static char *drm_opts = NULL;
+#endif
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_PARM( drm_opts, "s" );
+MODULE_LICENSE("GPL and additional rights");
+
static int DRM(setup)( drm_device_t *dev )
{
int i;
@@ -430,19 +453,37 @@ static struct pci_device_id DRM(pciidlist)[] = {
DRM(PCI_IDS)
};
-int DRM(fill_in_dev)(drm_device_t *dev, struct pci_dev *pdev, const struct pci_device_id *ent)
+static int drm_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
+ drm_device_t *dev;
int retcode;
+ DRM_DEBUG( "\n" );
+
+ if (DRM(numdevs) >= MAX_DEVICES)
+ return -ENODEV;
+
+ dev = &(DRM(device)[DRM(numdevs)]);
+ memset( (void *)dev, 0, sizeof(*dev) );
dev->count_lock = SPIN_LOCK_UNLOCKED;
init_timer( &dev->timer );
sema_init( &dev->struct_sem, 1 );
sema_init( &dev->ctxlist_sem, 1 );
- dev->name = DRIVER_NAME;
+ dev->maplist = DRM(alloc)(sizeof(*dev->maplist), DRM_MEM_MAPS);
+ if(dev->maplist == NULL)
+ return -ENOMEM;
+ memset(dev->maplist, 0, sizeof(*dev->maplist));
+ INIT_LIST_HEAD(&dev->maplist->head);
- dev->pdev = pdev;
+ if (DRM(fb_loaded)==0) {
+ pci_set_drvdata(pdev, dev);
+ pci_request_regions(pdev, DRIVER_NAME);
+ pci_enable_device(pdev);
+ }
+ dev->name = DRIVER_NAME;
+ dev->pdev = pdev;
#ifdef __alpha__
dev->hose = pdev->sysdata;
dev->pci_domain = dev->hose->bus->number;
@@ -454,10 +495,6 @@ int DRM(fill_in_dev)(drm_device_t *dev, struct pci_dev *pdev, const struct pci_d
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);
-
/* dev_priv_size can be changed by a driver in driver_register_fns */
dev->dev_priv_size = sizeof(u32);
@@ -467,14 +504,14 @@ int DRM(fill_in_dev)(drm_device_t *dev, struct pci_dev *pdev, const struct pci_d
if (dev->fn_tbl.preinit)
if ((retcode = dev->fn_tbl.preinit(dev, ent->driver_data)))
- goto error_out_unreg;
+ goto error_out;
if (drm_core_has_AGP(dev)) {
dev->agp = DRM(agp_init)();
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;
+ goto error_out;
}
@@ -490,10 +527,18 @@ int DRM(fill_in_dev)(drm_device_t *dev, struct pci_dev *pdev, const struct pci_d
retcode = DRM(ctxbitmap_init)( dev );
if( retcode ) {
DRM_ERROR( "Cannot allocate memory for context bitmap.\n" );
- goto error_out_unreg;
+ goto error_out;
}
+ if ((dev->minor = DRM(stub_register)(DRIVER_NAME, &DRM(fops),dev)) < 0)
+ {
+ retcode = -EPERM;
+ goto error_out;
+ }
+
dev->device = MKDEV(DRM_MAJOR, dev->minor );
+
+ DRM(numdevs)++; /* no errors, mark it reserved */
DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d: %s\n",
DRIVER_NAME,
@@ -513,7 +558,14 @@ int DRM(fill_in_dev)(drm_device_t *dev, struct pci_dev *pdev, const struct pci_d
return 0;
error_out_unreg:
+ DRM(stub_unregister)(dev->minor);
DRM(takedown)(dev);
+ error_out:
+ if (DRM(fb_loaded)==0) {
+ pci_set_drvdata(pdev, NULL);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ }
return retcode;
}
@@ -522,23 +574,17 @@ static void __exit drm_cleanup_pci(struct pci_dev *pdev)
drm_device_t *dev = pci_get_drvdata(pdev);
pci_set_drvdata(pdev, NULL);
+ drm_cleanup(dev);
pci_release_regions(pdev);
- if (dev)
- drm_cleanup(dev);
}
static struct pci_driver drm_driver = {
.name = DRIVER_NAME,
.id_table = DRM(pciidlist),
- .probe = DRM(probe),
+ .probe = drm_probe,
.remove = __devexit_p(drm_cleanup_pci),
};
-#ifdef MODULE
-static char *drm_opts = NULL;
-#endif
-MODULE_PARM( drm_opts, "s" );
-
/**
* Module initialization. Called via init_module at module load time, or via
* linux/init/main.c (this is not currently supported).
@@ -595,7 +641,7 @@ static int __init drm_init( void )
/* pass back in pdev to account for multiple identical cards */
while ((pdev = pci_get_subsys(pid->vendor, pid->device, pid->subvendor, pid->subdevice, pdev))) {
/* stealth mode requires a manual probe */
- DRM(probe)(pdev, &DRM(pciidlist[i]));
+ drm_probe(pdev, &DRM(pciidlist[i]));
}
}
DRM_INFO("Used old pci detect: framebuffer loaded\n");
@@ -663,6 +709,13 @@ static void __exit drm_cleanup( drm_device_t *dev )
if (DRM(fb_loaded)==0)
pci_disable_device(dev->pdev);
+ DRM(numdevs)--;
+ if ( DRM(stub_unregister)(dev->minor) ) {
+ DRM_ERROR( "Cannot unload module\n" );
+ } else {
+ DRM_DEBUG( "minor %d unregistered\n", dev->minor);
+ }
+
DRM(ctxbitmap_cleanup)( dev );
if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && dev->agp && dev->agp->agp_mtrr >= 0) {
@@ -680,33 +733,25 @@ static void __exit drm_cleanup( drm_device_t *dev )
}
if (dev->fn_tbl.postcleanup)
dev->fn_tbl.postcleanup(dev);
-
- if ( DRM(put_minor)(dev) )
- DRM_ERROR( "Cannot unload module\n" );
}
static void __exit drm_exit (void)
{
- int i;
- drm_device_t *dev;
- drm_minor_t *minor;
-
DRM_DEBUG( "\n" );
- if (DRM(fb_loaded)) {
- if (DRM(global)) {
- for (i = 0; i < DRM(global)->cards_limit; i++) {
- minor = &DRM(global)->minors[i];
- dev = minor->dev;
- DRM_DEBUG("fb loaded release minor %d\n", dev->minor);
- if ((minor->class == DRM_MINOR_PRIMARY) && (dev->fops == &DRM(fops))) {
- /* release the pci driver */
- if (dev->pdev)
- pci_dev_put(dev->pdev);
- drm_cleanup(dev);
- }
- }
+ if (DRM(fb_loaded)==1)
+ {
+ int i;
+ drm_device_t *dev;
+
+ for (i = DRM(numdevs) - 1; i >= 0; i--) {
+ dev = &(DRM(device)[i]);
+ /* release the pci driver */
+ if (dev->pdev)
+ pci_dev_put(dev->pdev);
+ drm_cleanup(dev);
}
- } else
+ }
+ else
pci_unregister_driver(&drm_driver);
DRM_INFO( "Module unloaded\n" );
}
@@ -773,15 +818,18 @@ int DRM(version)( struct inode *inode, struct file *filp,
int DRM(open)( struct inode *inode, struct file *filp )
{
drm_device_t *dev = NULL;
- int minor = iminor(inode);
int retcode = 0;
+ int i;
- if (!((minor >= 0) && (minor < DRM(global)->cards_limit)))
- return -ENODEV;
-
- dev = DRM(global)->minors[minor].dev;
- if (!dev)
+ for (i = 0; i < DRM(numdevs); i++) {
+ if (iminor(inode) == DRM(device)[i].minor) {
+ dev = &(DRM(device)[i]);
+ break;
+ }
+ }
+ if (!dev) {
return -ENODEV;
+ }
retcode = DRM(open_helper)( inode, filp, dev );
if ( !retcode ) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 02:46:04 +0000