lib/cimarron/cim_mod.c

   1 /* <LIC_AMD_STD>
   2  * Copyright (c) 2003-2005 Advanced Micro Devices, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called COPYING
  20  * </LIC_AMD_STD>  */
  21 /* <CTL_AMD_STD>
  22  * </CTL_AMD_STD>  */
  23 /* <DOC_AMD_STD>
  24  * Cimarron module initalization
  25  * Jordan Crouse (jordan.crouse@amd.com)
  26  * </DOC_AMD_STD>  */
  27
  28 #include <linux/kernel.h>
  29 #include <linux/init.h>
  30 #include <linux/module.h>
  31 #include <linux/pci.h>
  32 #include <linux/pci_ids.h>
  33
  34 #include "cim_mem.h"
  35 #include "cim_dev.h"
  36 #include "build_num.h"
  37
  38 #ifdef MODULE
  39 MODULE_AUTHOR("Advanced Micro Devices, Inc.");
  40 MODULE_DESCRIPTION("AMD Geode LX Graphics Abstraction Layer");
  41 MODULE_LICENSE("GPL");
  42 #endif
  43
  44 #define CIM_MOD_DRIVER_NAME "cimarron"
  45
  46 int cim_init_dev(void);
  47 void cim_exit_dev(void);
  48
  49 int cim_init_memory(void);
  50 void cim_exit_memory(void);
  51 /* We do this because there really isn't any way to verify that the
  52    KFB or V4L2 is going to be loaded before Cimarron is.  We force
  53    the issue by asking the other entities to call cim_mod_init()
  54    and we set a flag indicating that we have already been set up
  55 */
  56
  57 static int cim_init_flag = 0;
  58
  59 static int
  60 cim_mod_probe(struct pci_dev *pcidev, const struct pci_device_id *pciid) {
  61   int ret;
  62   ret = pci_enable_device(pcidev);
  63   if (ret) return ret;
  64   ret = cim_init_memory();
  65   if (ret) return ret;
  66
  67   ret = cim_init_dev();
  68   if (ret) {
  69         cim_exit_memory();
  70         return ret;
  71   }
  72   return 0;
  73 }
  74
  75 static void
  76 cim_mod_remove(struct pci_dev *dev) {
  77   cim_exit_memory();
  78   cim_exit_dev();
  79 }
  80
  81 static struct
  82 pci_device_id cim_mod_id_table[] __devinitdata = {
  83   {PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO, \
  84      PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
  85   {0,}
  86 };
  87
  88 MODULE_DEVICE_TABLE(pci, cim_mod_id_table);
  89
  90 static struct
  91 pci_driver cim_mod_driver = {
  92   name:      CIM_MOD_DRIVER_NAME,
  93   id_table:  cim_mod_id_table,
  94   probe:     cim_mod_probe,
  95   remove:    cim_mod_remove
  96 };
  97
  98 int __init
  99 cim_mod_init(void)
 100 {
 101   int ret;
 102   if( cim_init_flag != 0 ) return 0;
 103   printk(KERN_INFO "%s\n", AMD_VERSION);
 104   ret = pci_register_driver(&cim_mod_driver);
 105   if( ret == 0 ) cim_init_flag = 1;
 106   return ret;
 107 }
 108
 109 #ifdef MODULE
 110 void __exit
 111 cim_mod_exit(void)
 112 {
 113   printk(KERN_INFO CIM_MOD_DRIVER_NAME " unloading\n");
 114   pci_unregister_driver(&cim_mod_driver);
 115   cim_init_flag = 0;
 116 }
 117 #endif
 118
 119 module_init(cim_mod_init);
 120
 121 #ifdef MODULE
 122 module_exit(cim_mod_exit);
 123 #endif