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/system.h>
  38 #include <asm/io.h>
  39 #include <asm/irq.h>
  40
  41 #include "tms380tr.h"
  42
  43 static char version[] __devinitdata =
  44 "tmspci.c: v1.02 23/11/2000 by Adam Fritzler\n";
  45
  46 #define TMS_PCI_IO_EXTENT 32
  47
  48 struct card_info {
  49         unsigned char nselout[2]; /* NSELOUT vals for 4mb([0]) and 16mb([1]) */
  50         char *name;
  51 };
  52
  53 static struct card_info card_info_table[] = {
  54         { {0x03, 0x01}, "Compaq 4/16 TR PCI"},
  55         { {0x03, 0x01}, "SK NET TR 4/16 PCI"},
  56         { {0x03, 0x01}, "Thomas-Conrad TC4048 PCI 4/16"},
  57         { {0x03, 0x01}, "3Com Token Link Velocity"},
  58 };
  59
  60 static DEFINE_PCI_DEVICE_TABLE(tmspci_pci_tbl) = {
  61         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TOKENRING, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
  62         { PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_TR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
  63         { PCI_VENDOR_ID_TCONRAD, PCI_DEVICE_ID_TCONRAD_TOKENRING, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
  64         { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C339, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
  65         { }                     /* Terminating entry */
  66 };
  67 MODULE_DEVICE_TABLE(pci, tmspci_pci_tbl);
  68
  69 MODULE_LICENSE("GPL");
  70
  71 static void tms_pci_read_eeprom(struct net_device *dev);
  72 static unsigned short tms_pci_setnselout_pins(struct net_device *dev);
  73
  74 static unsigned short tms_pci_sifreadb(struct net_device *dev, unsigned short reg)
  75 {
  76         return inb(dev->base_addr + reg);
  77 }
  78
  79 static unsigned short tms_pci_sifreadw(struct net_device *dev, unsigned short reg)
  80 {
  81         return inw(dev->base_addr + reg);
  82 }
  83
  84 static void tms_pci_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
  85 {
  86         outb(val, dev->base_addr + reg);
  87 }
  88
  89 static void tms_pci_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
  90 {
  91         outw(val, dev->base_addr + reg);
  92 }
  93
  94 static int __devinit tms_pci_attach(struct pci_dev *pdev, const struct pci_device_id *ent)
  95 {
  96         static int versionprinted;
  97         struct net_device *dev;
  98         struct net_local *tp;
  99         int ret;
 100         unsigned int pci_irq_line;
 101         unsigned long pci_ioaddr;
 102         struct card_info *cardinfo = &card_info_table[ent->driver_data];
 103
 104         if (versionprinted++ == 0)
 105                 printk("%s", version);
 106
 107         if (pci_enable_device(pdev))
 108                 return -EIO;
 109
 110         /* Remove I/O space marker in bit 0. */
 111         pci_irq_line = pdev->irq;
 112         pci_ioaddr = pci_resource_start (pdev, 0);
 113
 114         /* At this point we have found a valid card. */
 115         dev = alloc_trdev(sizeof(struct net_local));
 116         if (!dev)
 117                 return -ENOMEM;
 118
 119         if (!request_region(pci_ioaddr, TMS_PCI_IO_EXTENT, dev->name)) {
 120                 ret = -EBUSY;
 121                 goto err_out_trdev;
 122         }
 123
 124         dev->base_addr  = pci_ioaddr;
 125         dev->irq        = pci_irq_line;
 126         dev->dma        = 0;
 127
 128         printk("%s: %s\n", dev->name, cardinfo->name);
 129         printk("%s:    IO: %#4lx  IRQ: %d\n",
 130                dev->name, dev->base_addr, dev->irq);
 131
 132         tms_pci_read_eeprom(dev);
 133
 134         printk("%s:    Ring Station Address: %pM\n",
 135                dev->name, dev->dev_addr);
 136
 137         ret = tmsdev_init(dev, &pdev->dev);
 138         if (ret) {
 139                 printk("%s: unable to get memory for dev->priv.\n", dev->name);
 140                 goto err_out_region;
 141         }
 142
 143         tp = netdev_priv(dev);
 144         tp->setnselout = tms_pci_setnselout_pins;
 145
 146         tp->sifreadb = tms_pci_sifreadb;
 147         tp->sifreadw = tms_pci_sifreadw;
 148         tp->sifwriteb = tms_pci_sifwriteb;
 149         tp->sifwritew = tms_pci_sifwritew;
 150
 151         memcpy(tp->ProductID, cardinfo->name, PROD_ID_SIZE + 1);
 152
 153         tp->tmspriv = cardinfo;
 154
 155         dev->netdev_ops = &tms380tr_netdev_ops;
 156
 157         ret = request_irq(pdev->irq, tms380tr_interrupt, IRQF_SHARED,
 158                           dev->name, dev);
 159         if (ret)
 160                 goto err_out_tmsdev;
 161
 162         pci_set_drvdata(pdev, dev);
 163         SET_NETDEV_DEV(dev, &pdev->dev);
 164
 165         ret = register_netdev(dev);
 166         if (ret)
 167                 goto err_out_irq;
 168
 169         return 0;
 170
 171 err_out_irq:
 172         free_irq(pdev->irq, dev);
 173 err_out_tmsdev:
 174         pci_set_drvdata(pdev, NULL);
 175         tmsdev_term(dev);
 176 err_out_region:
 177         release_region(pci_ioaddr, TMS_PCI_IO_EXTENT);
 178 err_out_trdev:
 179         free_netdev(dev);
 180         return ret;
 181 }
 182
 183 /*
 184  * Reads MAC address from adapter RAM, which should've read it from
 185  * the onboard ROM.
 186  *
 187  * Calling this on a board that does not support it can be a very
 188  * dangerous thing.  The Madge board, for instance, will lock your
 189  * machine hard when this is called.  Luckily, its supported in a
 190  * separate driver.  --ASF
 191  */
 192 static void tms_pci_read_eeprom(struct net_device *dev)
 193 {
 194         int i;
 195
 196         /* Address: 0000:0000 */
 197         tms_pci_sifwritew(dev, 0, SIFADX);
 198         tms_pci_sifwritew(dev, 0, SIFADR);
 199
 200         /* Read six byte MAC address data */
 201         dev->addr_len = 6;
 202         for(i = 0; i < 6; i++)
 203                 dev->dev_addr[i] = tms_pci_sifreadw(dev, SIFINC) >> 8;
 204 }
 205
 206 static unsigned short tms_pci_setnselout_pins(struct net_device *dev)
 207 {
 208         unsigned short val = 0;
 209         struct net_local *tp = netdev_priv(dev);
 210         struct card_info *cardinfo = tp->tmspriv;
 211
 212         if(tp->DataRate == SPEED_4)
 213                 val |= cardinfo->nselout[0];    /* Set 4Mbps */
 214         else
 215                 val |= cardinfo->nselout[1];    /* Set 16Mbps */
 216         return val;
 217 }
 218
 219 static void __devexit tms_pci_detach (struct pci_dev *pdev)
 220 {
 221         struct net_device *dev = pci_get_drvdata(pdev);
 222
 223         BUG_ON(!dev);
 224         unregister_netdev(dev);
 225         release_region(dev->base_addr, TMS_PCI_IO_EXTENT);
 226         free_irq(dev->irq, dev);
 227         tmsdev_term(dev);
 228         free_netdev(dev);
 229         pci_set_drvdata(pdev, NULL);
 230 }
 231
 232 static struct pci_driver tms_pci_driver = {
 233         .name           = "tmspci",
 234         .id_table       = tmspci_pci_tbl,
 235         .probe          = tms_pci_attach,
 236         .remove         = __devexit_p(tms_pci_detach),
 237 };
 238
 239 static int __init tms_pci_init (void)
 240 {
 241         return pci_register_driver(&tms_pci_driver);
 242 }
 243
 244 static void __exit tms_pci_rmmod (void)
 245 {
 246         pci_unregister_driver (&tms_pci_driver);
 247 }
 248
 249 module_init(tms_pci_init);
 250 module_exit(tms_pci_rmmod);
 251