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Diffstat (limited to 'linux-core/drm_drv.c')
-rw-r--r--linux-core/drm_drv.c192
1 files changed, 138 insertions, 54 deletions
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index c5f231c7..dd46f227 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -101,9 +101,16 @@
#define DRIVER_IOCTLS
#endif
+/*
+ * The default number of instances (minor numbers) to initialize.
+ */
+#ifndef DRIVER_NUM_CARDS
+#define DRIVER_NUM_CARDS 1
+#endif
-static drm_device_t DRM(device);
-static int DRM(minor);
+static drm_device_t *DRM(device);
+static int *DRM(minor);
+static int DRM(numdevs) = 0;
static struct file_operations DRM(fops) = {
#if LINUX_VERSION_CODE >= 0x020400
@@ -460,46 +467,102 @@ static int DRM(takedown)( drm_device_t *dev )
return 0;
}
+/*
+ * Figure out how many instances to initialize.
+ */
+static int drm_count_cards(void)
+{
+ int num = 0;
+#if defined(DRIVER_CARD_LIST)
+ u_int *l;
+ u_int device, vendor;
+ struct pci_dev *pdev = NULL;
+#endif
+
+ DRM_DEBUG( "\n" );
+
+#if defined(DRIVER_COUNT_CARDS)
+ num = DRIVER_COUNT_CARDS();
+#elif defined(DRIVER_CARD_LIST)
+ for (l = DRIVER_CARD_LIST; *l; l++) {
+ pdev = NULL;
+ device = *l & 0xFFFF;
+ if (device == 0xFFFF)
+ device = PCI_ANY_ID;
+ vendor = (*l >> 16) & 0xFFFF;
+ if (vendor == 0xFFFF)
+ vendor = PCI_ANY_ID;
+ while ((pdev = pci_find_device(vendor, device, pdev))) {
+ num++;
+ }
+ }
+#else
+ num = DRIVER_NUM_CARDS;
+#endif
+ DRM_DEBUG("numdevs = %d\n", num);
+ return num;
+}
+
/* drm_init is called via init_module at module load time, or via
* linux/init/main.c (this is not currently supported).
*/
static int __init drm_init( void )
{
- drm_device_t *dev = &DRM(device);
+
+ drm_device_t *dev;
+ int i;
#if __HAVE_CTX_BITMAP
int retcode;
#endif
DRM_DEBUG( "\n" );
- memset( (void *)dev, 0, sizeof(*dev) );
- dev->count_lock = SPIN_LOCK_UNLOCKED;
- sema_init( &dev->struct_sem, 1 );
-
#ifdef MODULE
DRM(parse_options)( drm_opts );
#endif
+
+ DRM(numdevs) = drm_count_cards();
+ /* Force at least one instance. */
+ if (DRM(numdevs) <= 0)
+ DRM(numdevs) = 1;
+
+ DRM(device) = kmalloc(sizeof(*DRM(device)) * DRM(numdevs), GFP_KERNEL);
+ if (!DRM(device)) {
+ return -ENOMEM;
+ }
+ DRM(minor) = kmalloc(sizeof(*DRM(minor)) * DRM(numdevs), GFP_KERNEL);
+ if (!DRM(minor)) {
+ kfree(DRM(device));
+ return -ENOMEM;
+ }
+
DRIVER_PREINIT();
DRM(mem_init)();
- if ((DRM(minor) = DRM(stub_register)(DRIVER_NAME, &DRM(fops),dev)) < 0)
- return -EPERM;
- dev->device = MKDEV(DRM_MAJOR, DRM(minor) );
- dev->name = DRIVER_NAME;
+ for (i = 0; i < DRM(numdevs); i++) {
+ dev = &(DRM(device)[i]);
+ memset( (void *)dev, 0, sizeof(*dev) );
+ dev->count_lock = SPIN_LOCK_UNLOCKED;
+ sema_init( &dev->struct_sem, 1 );
+
+ if ((DRM(minor)[i] = DRM(stub_register)(DRIVER_NAME, &DRM(fops),dev)) < 0)
+ return -EPERM;
+ dev->device = MKDEV(DRM_MAJOR, DRM(minor)[i] );
+ dev->name = DRIVER_NAME;
#if __REALLY_HAVE_AGP
- dev->agp = DRM(agp_init)();
+ dev->agp = DRM(agp_init)();
#if __MUST_HAVE_AGP
- if ( dev->agp == NULL ) {
- DRM_ERROR( "Cannot initialize the agpgart module.\n" );
- DRM(stub_unregister)(DRM(minor));
- DRM(takedown)( dev );
- return -ENOMEM;
- }
+ if ( dev->agp == NULL ) {
+ DRM_ERROR( "Cannot initialize the agpgart module.\n" );
+ DRM(stub_unregister)(DRM(minor)[i]);
+ DRM(takedown)( dev );
+ return -ENOMEM;
+ }
#endif
#if __REALLY_HAVE_MTRR
- if (dev->agp)
- dev->agp->agp_mtrr = mtrr_add( dev->agp->agp_info.aper_base,
+ 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 );
@@ -507,25 +570,25 @@ static int __init drm_init( void )
#endif
#if __HAVE_CTX_BITMAP
- retcode = DRM(ctxbitmap_init)( dev );
- if( retcode ) {
- DRM_ERROR( "Cannot allocate memory for context bitmap.\n" );
- DRM(stub_unregister)(DRM(minor));
- DRM(takedown)( dev );
- return retcode;
- }
+ retcode = DRM(ctxbitmap_init)( dev );
+ if( retcode ) {
+ DRM_ERROR( "Cannot allocate memory for context bitmap.\n" );
+ DRM(stub_unregister)(DRM(minor)[i]);
+ DRM(takedown)( dev );
+ return retcode;
+ }
#endif
+ DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n",
+ DRIVER_NAME,
+ DRIVER_MAJOR,
+ DRIVER_MINOR,
+ DRIVER_PATCHLEVEL,
+ DRIVER_DATE,
+ DRM(minor)[i] );
+ }
DRIVER_POSTINIT();
- DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n",
- DRIVER_NAME,
- DRIVER_MAJOR,
- DRIVER_MINOR,
- DRIVER_PATCHLEVEL,
- DRIVER_DATE,
- DRM(minor) );
-
return 0;
}
@@ -533,38 +596,48 @@ static int __init drm_init( void )
*/
static void __exit drm_cleanup( void )
{
- drm_device_t *dev = &DRM(device);
+ drm_device_t *dev;
+ int i;
DRM_DEBUG( "\n" );
- if ( DRM(stub_unregister)(DRM(minor)) ) {
- DRM_ERROR( "Cannot unload module\n" );
- } else {
- DRM_INFO( "Module unloaded\n" );
- }
+ for (i = DRM(numdevs) - 1; i >= 0; i--) {
+ dev = &(DRM(device)[i]);
+ if ( DRM(stub_unregister)(DRM(minor)[i]) ) {
+ DRM_ERROR( "Cannot unload module\n" );
+ } else {
+ DRM_DEBUG("minor %d unregistered\n", DRM(minor)[i]);
+ if (i == 0) {
+ DRM_INFO( "Module unloaded\n" );
+ }
+ }
#if __HAVE_CTX_BITMAP
- DRM(ctxbitmap_cleanup)( dev );
+ DRM(ctxbitmap_cleanup)( dev );
#endif
#if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR
- if ( dev->agp && dev->agp->agp_mtrr ) {
- int retval;
- retval = mtrr_del( dev->agp->agp_mtrr,
+ if ( dev->agp && dev->agp->agp_mtrr ) {
+ int retval;
+ retval = mtrr_del( dev->agp->agp_mtrr,
dev->agp->agp_info.aper_base,
dev->agp->agp_info.aper_size*1024*1024 );
- DRM_DEBUG( "mtrr_del=%d\n", retval );
- }
+ DRM_DEBUG( "mtrr_del=%d\n", retval );
+ }
#endif
- DRM(takedown)( dev );
+ DRM(takedown)( dev );
#if __REALLY_HAVE_AGP
- if ( dev->agp ) {
- DRM(agp_uninit)();
- DRM(free)( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS );
- dev->agp = NULL;
- }
+ if ( dev->agp ) {
+ DRM(agp_uninit)();
+ DRM(free)( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS );
+ dev->agp = NULL;
+ }
#endif
+ }
+ kfree(DRM(minor));
+ kfree(DRM(device));
+ DRM(numdevs) = 0;
}
module_init( drm_init );
@@ -608,8 +681,19 @@ int DRM(version)( struct inode *inode, struct file *filp,
int DRM(open)( struct inode *inode, struct file *filp )
{
- drm_device_t *dev = &DRM(device);
+ drm_device_t *dev = NULL;
int retcode = 0;
+ int i;
+
+ for (i = 0; i < DRM(numdevs); i++) {
+ if (MINOR(inode->i_rdev) == DRM(minor)[i]) {
+ dev = &(DRM(device)[i]);
+ break;
+ }
+ }
+ if (!dev) {
+ return -ENODEV;
+ }
DRM_DEBUG( "open_count = %d\n", dev->open_count );
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 03:11:00 +0000