drivers/net/arcnet/com20020-pci.c

   1 /*
   2  * Linux ARCnet driver - COM20020 PCI support
   3  * Contemporary Controls PCI20 and SOHARD SH-ARC PCI
   4  *
   5  * Written 1994-1999 by Avery Pennarun,
   6  *    based on an ISA version by David Woodhouse.
   7  * Written 1999-2000 by Martin Mares <mj@ucw.cz>.
   8  * Derived from skeleton.c by Donald Becker.
   9  *
  10  * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
  11  *  for sponsoring the further development of this driver.
  12  *
  13  * **********************
  14  *
  15  * The original copyright of skeleton.c was as follows:
  16  *
  17  * skeleton.c Written 1993 by Donald Becker.
  18  * Copyright 1993 United States Government as represented by the
  19  * Director, National Security Agency.  This software may only be used
  20  * and distributed according to the terms of the GNU General Public License as
  21  * modified by SRC, incorporated herein by reference.
  22  *
  23  * **********************
  24  *
  25  * For more details, see drivers/net/arcnet.c
  26  *
  27  * **********************
  28  */
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <linux/kernel.h>
  32 #include <linux/types.h>
  33 #include <linux/ioport.h>
  34 #include <linux/slab.h>
  35 #include <linux/errno.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/init.h>
  38 #include <linux/pci.h>
  39 #include <linux/arcdevice.h>
  40 #include <linux/com20020.h>
  41
  42 #include <asm/io.h>
  43
  44
  45 #define VERSION "arcnet: COM20020 PCI support\n"
  46
  47 /* Module parameters */
  48
  49 static int node;
  50 static char device[9];          /* use eg. device="arc1" to change name */
  51 static int timeout = 3;
  52 static int backplane;
  53 static int clockp;
  54 static int clockm;
  55
  56 module_param(node, int, 0);
  57 module_param_string(device, device, sizeof(device), 0);
  58 module_param(timeout, int, 0);
  59 module_param(backplane, int, 0);
  60 module_param(clockp, int, 0);
  61 module_param(clockm, int, 0);
  62 MODULE_LICENSE("GPL");
  63
  64 static int __devinit com20020pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
  65 {
  66         struct net_device *dev;
  67         struct arcnet_local *lp;
  68         int ioaddr, err;
  69
  70         if (pci_enable_device(pdev))
  71                 return -EIO;
  72         dev = alloc_arcdev(device);
  73         if (!dev)
  74                 return -ENOMEM;
  75         lp = dev->priv;
  76
  77         pci_set_drvdata(pdev, dev);
  78
  79         // SOHARD needs PCI base addr 4
  80         if (pdev->vendor==0x10B5) {
  81                 BUGMSG(D_NORMAL, "SOHARD\n");
  82                 ioaddr = pci_resource_start(pdev, 4);
  83         }
  84         else {
  85                 BUGMSG(D_NORMAL, "Contemporary Controls\n");
  86                 ioaddr = pci_resource_start(pdev, 2);
  87         }
  88
  89         if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "com20020-pci")) {
  90                 BUGMSG(D_INIT, "IO region %xh-%xh already allocated.\n",
  91                        ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
  92                 err = -EBUSY;
  93                 goto out_dev;
  94         }
  95
  96         // Dummy access after Reset
  97         // ARCNET controller needs this access to detect bustype
  98         outb(0x00,ioaddr+1);
  99         inb(ioaddr+1);
 100
 101         dev->base_addr = ioaddr;
 102         dev->irq = pdev->irq;
 103         dev->dev_addr[0] = node;
 104         lp->card_name = "PCI COM20020";
 105         lp->card_flags = id->driver_data;
 106         lp->backplane = backplane;
 107         lp->clockp = clockp & 7;
 108         lp->clockm = clockm & 3;
 109         lp->timeout = timeout;
 110         lp->hw.owner = THIS_MODULE;
 111
 112         if (ASTATUS() == 0xFF) {
 113                 BUGMSG(D_NORMAL, "IO address %Xh was reported by PCI BIOS, "
 114                        "but seems empty!\n", ioaddr);
 115                 err = -EIO;
 116                 goto out_port;
 117         }
 118         if (com20020_check(dev)) {
 119                 err = -EIO;
 120                 goto out_port;
 121         }
 122
 123         if ((err = com20020_found(dev, SA_SHIRQ)) != 0)
 124                 goto out_port;
 125
 126         return 0;
 127
 128 out_port:
 129         release_region(ioaddr, ARCNET_TOTAL_SIZE);
 130 out_dev:
 131         free_netdev(dev);
 132         return err;
 133 }
 134
 135 static void __devexit com20020pci_remove(struct pci_dev *pdev)
 136 {
 137         struct net_device *dev = pci_get_drvdata(pdev);
 138         unregister_netdev(dev);
 139         free_irq(dev->irq, dev);
 140         release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
 141         free_netdev(dev);
 142 }
 143
 144 static struct pci_device_id com20020pci_id_table[] = {
 145         { 0x1571, 0xa001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 146         { 0x1571, 0xa002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 147         { 0x1571, 0xa003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 148         { 0x1571, 0xa004, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 149         { 0x1571, 0xa005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 150         { 0x1571, 0xa006, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 151         { 0x1571, 0xa007, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 152         { 0x1571, 0xa008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 153         { 0x1571, 0xa009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
 154         { 0x1571, 0xa00a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
 155         { 0x1571, 0xa00b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
 156         { 0x1571, 0xa00c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
 157         { 0x1571, 0xa00d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
 158         { 0x1571, 0xa201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
 159         { 0x1571, 0xa202, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
 160         { 0x1571, 0xa203, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
 161         { 0x1571, 0xa204, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
 162         { 0x1571, 0xa205, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
 163         { 0x1571, 0xa206, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
 164         { 0x10B5, 0x9050, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
 165         {0,}
 166 };
 167
 168 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
 169
 170 static struct pci_driver com20020pci_driver = {
 171         .name           = "com20020",
 172         .id_table       = com20020pci_id_table,
 173         .probe          = com20020pci_probe,
 174         .remove         = __devexit_p(com20020pci_remove),
 175 };
 176
 177 static int __init com20020pci_init(void)
 178 {
 179         BUGLVL(D_NORMAL) printk(VERSION);
 180         return pci_module_init(&com20020pci_driver);
 181 }
 182
 183 static void __exit com20020pci_cleanup(void)
 184 {
 185         pci_unregister_driver(&com20020pci_driver);
 186 }
 187
 188 module_init(com20020pci_init)
 189 module_exit(com20020pci_cleanup)