diff options
Diffstat (limited to 'linux/gamma_drv.c')
| -rw-r--r-- | linux/gamma_drv.c | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/linux/gamma_drv.c b/linux/gamma_drv.c index c6838cb7..d42cf4ae 100644 --- a/linux/gamma_drv.c +++ b/linux/gamma_drv.c @@ -32,6 +32,7 @@ #define EXPORT_SYMTAB #include "drmP.h" #include "gamma_drv.h" +#include <linux/pci.h> EXPORT_SYMBOL(gamma_init); EXPORT_SYMBOL(gamma_cleanup); @@ -99,10 +100,13 @@ static drm_ioctl_desc_t gamma_ioctls[] = { int init_module(void); void cleanup_module(void); static char *gamma = NULL; +static int devices = 0; MODULE_AUTHOR("Precision Insight, Inc., Cedar Park, Texas."); MODULE_DESCRIPTION("3dlabs GMX 2000"); MODULE_PARM(gamma, "s"); +MODULE_PARM(devices, "i"); +MODULE_PARM_DESC(devices, "devices=x, where x is the number of MX chips on your card\n"); /* init_module is called when insmod is used to load the module */ @@ -317,6 +321,34 @@ static int gamma_takedown(drm_device_t *dev) return 0; } +int gamma_found(void) +{ + return devices; +} + +int gamma_find_devices(void) +{ + struct pci_dev *d = NULL, *one = NULL, *two = NULL; + + d = pci_find_device(PCI_VENDOR_ID_3DLABS,PCI_DEVICE_ID_3DLABS_GAMMA,d); + if (!d) return 0; + + one = pci_find_device(PCI_VENDOR_ID_3DLABS,PCI_DEVICE_ID_3DLABS_MX,d); + if (!one) return 0; + + /* Make sure it's on the same card, if not - no MX's found */ + if (PCI_SLOT(d->devfn) != PCI_SLOT(one->devfn)) return 0; + + two = pci_find_device(PCI_VENDOR_ID_3DLABS,PCI_DEVICE_ID_3DLABS_MX,one); + if (!two) return 1; + + /* Make sure it's on the same card, if not - only 1 MX found */ + if (PCI_SLOT(d->devfn) != PCI_SLOT(two->devfn)) return 1; + + /* Two MX's found - we don't currently support more than 2 */ + return 2; +} + /* gamma_init is called via init_module at module load time, or via * linux/init/main.c (this is not currently supported). */ @@ -334,6 +366,8 @@ int gamma_init(void) #ifdef MODULE drm_parse_options(gamma); #endif + devices = gamma_find_devices(); + if (devices == 0) return -1; if ((retcode = misc_register(&gamma_misc))) { DRM_ERROR("Cannot register \"%s\"\n", GAMMA_NAME); @@ -345,13 +379,14 @@ int gamma_init(void) drm_mem_init(); drm_proc_init(dev); - DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", + DRM_INFO("Initialized %s %d.%d.%d %s on minor %d with %d MX devices\n", GAMMA_NAME, GAMMA_MAJOR, GAMMA_MINOR, GAMMA_PATCHLEVEL, GAMMA_DATE, - gamma_misc.minor); + gamma_misc.minor, + devices); return 0; } |