drivers/net/tokenring/tmspci.c

   1 /*
   2  *  tmspci.c: A generic network driver for TMS380-based PCI token ring cards.
   3  *
   4  *  Written 1999 by Adam Fritzler
   5  *
   6  *  This software may be used and distributed according to the terms
   7  *  of the GNU General Public License, incorporated herein by reference.
   8  *
   9  *  This driver module supports the following cards:
  10  *      - SysKonnect TR4/16(+) PCI      (SK-4590)
  11  *      - SysKonnect TR4/16 PCI         (SK-4591)
  12  *      - Compaq TR 4/16 PCI
  13  *      - Thomas-Conrad TC4048 4/16 PCI
  14  *      - 3Com 3C339 Token Link Velocity
  15  *
  16  *  Maintainer(s):
  17  *    AF        Adam Fritzler
  18  *
  19  *  Modification History:
  20  *      30-Dec-99       AF      Split off from the tms380tr driver.
  21  *      22-Jan-00       AF      Updated to use indirect read/writes
  22  *      23-Nov-00       JG      New PCI API, cleanups
  23  *
  24  *  TODO:
  25  *      1. See if we can use MMIO instead of port accesses
  26  *
  27  */
  28
  29 #include <linux/module.h>
  30 #include <linux/kernel.h>
  31 #include <linux/errno.h>
  32 #include <linux/pci.h>
  33 #include <linux/init.h>
  34 #include <linux/netdevice.h>
  35 #include <linux/trdevice.h>
  36
  37 #include <asm/io.h>
  38 #include <asm/irq.h>
  39
  40 #include "tms380tr.h"
  41
  42 static char version[] __devinitdata =
  43 "tmspci.c: v1.02 23/11/2000 by Adam Fritzler\n";
  44
  45 #define TMS_PCI_IO_EXTENT 32
  46
  47 struct card_info {
  48         unsigned char nselout[2]; /* NSELOUT vals for 4mb([0]) and 16mb([1]) */
  49         char *name;
  50 };
  51
  52 static struct card_info card_info_table[] = {
  53         { {0x03, 0x01}, "Compaq 4/16 TR PCI"},
  54         { {0x03, 0x01}, "SK NET TR 4/16 PCI"},
  55         { {0x03, 0x01}, "Thomas-Conrad TC4048 PCI 4/16"},
  56         { {0x03, 0x01}, "3Com Token Link Velocity"},
  57 };
  58
  59 static DEFINE_PCI_DEVICE_TABLE(tmspci_pci_tbl) = {
  60         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TOKENRING, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
  61         { PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_TR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
  62         { PCI_VENDOR_ID_TCONRAD, PCI_DEVICE_ID_TCONRAD_TOKENRING, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
  63         { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C339, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
  64         { }                     /* Terminating entry */
  65 };
  66 MODULE_DEVICE_TABLE(pci, tmspci_pci_tbl);
  67
  68 MODULE_LICENSE("GPL");
  69
  70 static void tms_pci_read_eeprom(struct net_device *dev);
  71 static unsigned short tms_pci_setnselout_pins(struct net_device *dev);
  72
  73 static unsigned short tms_pci_sifreadb(struct net_device *dev, unsigned short reg)
  74 {
  75         return inb(dev->base_addr + reg);
  76 }
  77
  78 static unsigned short tms_pci_sifreadw(struct net_device *dev, unsigned short reg)
  79 {
  80         return inw(dev->base_addr + reg);
  81 }
  82
  83 static void tms_pci_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
  84 {
  85         outb(val, dev->base_addr + reg);
  86 }
  87
  88 static void tms_pci_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
  89 {
  90         outw(val, dev->base_addr + reg);
  91 }
  92
  93 static int __devinit tms_pci_attach(struct pci_dev *pdev, const struct pci_device_id *ent)
  94 {
  95         static int versionprinted;
  96         struct net_device *dev;
  97         struct net_local *tp;
  98         int ret;
  99         unsigned int pci_irq_line;
 100         unsigned long pci_ioaddr;
 101         struct card_info *cardinfo = &card_info_table[ent->driver_data];
 102
 103         if (versionprinted++ == 0)
 104                 printk("%s", version);
 105
 106         if (pci_enable_device(pdev))
 107                 return -EIO;
 108
 109         /* Remove I/O space marker in bit 0. */
 110         pci_irq_line = pdev->irq;
 111         pci_ioaddr = pci_resource_start (pdev, 0);
 112
 113         /* At this point we have found a valid card. */
 114         dev = alloc_trdev(sizeof(struct net_local));
 115         if (!dev)
 116                 return -ENOMEM;
 117
 118         if (!request_region(pci_ioaddr, TMS_PCI_IO_EXTENT, dev->name)) {
 119                 ret = -EBUSY;
 120                 goto err_out_trdev;
 121         }
 122
 123         dev->base_addr  = pci_ioaddr;
 124         dev->irq        = pci_irq_line;
 125         dev->dma        = 0;
 126
 127         dev_info(&pdev->dev, "%s\n", cardinfo->name);
 128         dev_info(&pdev->dev, "    IO: %#4lx  IRQ: %d\n", dev->base_addr, dev->irq);
 129
 130         tms_pci_read_eeprom(dev);
 131
 132         dev_info(&pdev->dev, "    Ring Station Address: %pM\n", dev->dev_addr);
 133
 134         ret = tmsdev_init(dev, &pdev->dev);
 135         if (ret) {
 136                 dev_info(&pdev->dev, "unable to get memory for dev->priv.\n");
 137                 goto err_out_region;
 138         }
 139
 140         tp = netdev_priv(dev);
 141         tp->setnselout = tms_pci_setnselout_pins;
 142
 143         tp->sifreadb = tms_pci_sifreadb;
 144         tp->sifreadw = tms_pci_sifreadw;
 145         tp->sifwriteb = tms_pci_sifwriteb;
 146         tp->sifwritew = tms_pci_sifwritew;
 147
 148         memcpy(tp->ProductID, cardinfo->name, PROD_ID_SIZE + 1);
 149
 150         tp->tmspriv = cardinfo;
 151
 152         dev->netdev_ops = &tms380tr_netdev_ops;
 153
 154         ret = request_irq(pdev->irq, tms380tr_interrupt, IRQF_SHARED,
 155                           dev->name, dev);
 156         if (ret)
 157                 goto err_out_tmsdev;
 158
 159         pci_set_drvdata(pdev, dev);
 160         SET_NETDEV_DEV(dev, &pdev->dev);
 161
 162         ret = register_netdev(dev);
 163         if (ret)
 164                 goto err_out_irq;
 165
 166         return 0;
 167
 168 err_out_irq:
 169         free_irq(pdev->irq, dev);
 170 err_out_tmsdev:
 171         pci_set_drvdata(pdev, NULL);
 172         tmsdev_term(dev);
 173 err_out_region:
 174         release_region(pci_ioaddr, TMS_PCI_IO_EXTENT);
 175 err_out_trdev:
 176         free_netdev(dev);
 177         return ret;
 178 }
 179
 180 /*
 181  * Reads MAC address from adapter RAM, which should've read it from
 182  * the onboard ROM.
 183  *
 184  * Calling this on a board that does not support it can be a very
 185  * dangerous thing.  The Madge board, for instance, will lock your
 186  * machine hard when this is called.  Luckily, its supported in a
 187  * separate driver.  --ASF
 188  */
 189 static void tms_pci_read_eeprom(struct net_device *dev)
 190 {
 191         int i;
 192
 193         /* Address: 0000:0000 */
 194         tms_pci_sifwritew(dev, 0, SIFADX);
 195         tms_pci_sifwritew(dev, 0, SIFADR);
 196
 197         /* Read six byte MAC address data */
 198         dev->addr_len = 6;
 199         for(i = 0; i < 6; i++)
 200                 dev->dev_addr[i] = tms_pci_sifreadw(dev, SIFINC) >> 8;
 201 }
 202
 203 static unsigned short tms_pci_setnselout_pins(struct net_device *dev)
 204 {
 205         unsigned short val = 0;
 206         struct net_local *tp = netdev_priv(dev);
 207         struct card_info *cardinfo = tp->tmspriv;
 208
 209         if(tp->DataRate == SPEED_4)
 210                 val |= cardinfo->nselout[0];    /* Set 4Mbps */
 211         else
 212                 val |= cardinfo->nselout[1];    /* Set 16Mbps */
 213         return val;
 214 }
 215
 216 static void __devexit tms_pci_detach (struct pci_dev *pdev)
 217 {
 218         struct net_device *dev = pci_get_drvdata(pdev);
 219
 220         BUG_ON(!dev);
 221         unregister_netdev(dev);
 222         release_region(dev->base_addr, TMS_PCI_IO_EXTENT);
 223         free_irq(dev->irq, dev);
 224         tmsdev_term(dev);
 225         free_netdev(dev);
 226         pci_set_drvdata(pdev, NULL);
 227 }
 228
 229 static struct pci_driver tms_pci_driver = {
 230         .name           = "tmspci",
 231         .id_table       = tmspci_pci_tbl,
 232         .probe          = tms_pci_attach,
 233         .remove         = __devexit_p(tms_pci_detach),
 234 };
 235
 236 static int __init tms_pci_init (void)
 237 {
 238         return pci_register_driver(&tms_pci_driver);
 239 }
 240
 241 static void __exit tms_pci_rmmod (void)
 242 {
 243         pci_unregister_driver (&tms_pci_driver);
 244 }
 245
 246 module_init(tms_pci_init);
 247 module_exit(tms_pci_rmmod);
 248