250 lines
6.2 KiB
C
250 lines
6.2 KiB
C
/*
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* tmspci.c: A generic network driver for TMS380-based PCI token ring cards.
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*
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* Written 1999 by Adam Fritzler
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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* This driver module supports the following cards:
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* - SysKonnect TR4/16(+) PCI (SK-4590)
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* - SysKonnect TR4/16 PCI (SK-4591)
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* - Compaq TR 4/16 PCI
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* - Thomas-Conrad TC4048 4/16 PCI
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* - 3Com 3C339 Token Link Velocity
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*
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* Maintainer(s):
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* AF Adam Fritzler
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*
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* Modification History:
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* 30-Dec-99 AF Split off from the tms380tr driver.
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* 22-Jan-00 AF Updated to use indirect read/writes
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* 23-Nov-00 JG New PCI API, cleanups
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*
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* TODO:
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* 1. See if we can use MMIO instead of port accesses
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/netdevice.h>
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#include <linux/trdevice.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include "tms380tr.h"
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static char version[] __devinitdata =
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"tmspci.c: v1.02 23/11/2000 by Adam Fritzler\n";
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#define TMS_PCI_IO_EXTENT 32
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struct card_info {
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unsigned char nselout[2]; /* NSELOUT vals for 4mb([0]) and 16mb([1]) */
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char *name;
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};
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static struct card_info card_info_table[] = {
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{ {0x03, 0x01}, "Compaq 4/16 TR PCI"},
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{ {0x03, 0x01}, "SK NET TR 4/16 PCI"},
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{ {0x03, 0x01}, "Thomas-Conrad TC4048 PCI 4/16"},
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{ {0x03, 0x01}, "3Com Token Link Velocity"},
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};
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static DEFINE_PCI_DEVICE_TABLE(tmspci_pci_tbl) = {
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TOKENRING, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_TR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
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{ PCI_VENDOR_ID_TCONRAD, PCI_DEVICE_ID_TCONRAD_TOKENRING, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
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{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C339, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(pci, tmspci_pci_tbl);
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MODULE_LICENSE("GPL");
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static void tms_pci_read_eeprom(struct net_device *dev);
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static unsigned short tms_pci_setnselout_pins(struct net_device *dev);
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static unsigned short tms_pci_sifreadb(struct net_device *dev, unsigned short reg)
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{
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return inb(dev->base_addr + reg);
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}
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static unsigned short tms_pci_sifreadw(struct net_device *dev, unsigned short reg)
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{
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return inw(dev->base_addr + reg);
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}
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static void tms_pci_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
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{
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outb(val, dev->base_addr + reg);
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}
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static void tms_pci_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
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{
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outw(val, dev->base_addr + reg);
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}
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static int __devinit tms_pci_attach(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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static int versionprinted;
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struct net_device *dev;
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struct net_local *tp;
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int ret;
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unsigned int pci_irq_line;
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unsigned long pci_ioaddr;
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struct card_info *cardinfo = &card_info_table[ent->driver_data];
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if (versionprinted++ == 0)
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printk("%s", version);
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if (pci_enable_device(pdev))
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return -EIO;
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/* Remove I/O space marker in bit 0. */
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pci_irq_line = pdev->irq;
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pci_ioaddr = pci_resource_start (pdev, 0);
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/* At this point we have found a valid card. */
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dev = alloc_trdev(sizeof(struct net_local));
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if (!dev)
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return -ENOMEM;
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if (!request_region(pci_ioaddr, TMS_PCI_IO_EXTENT, dev->name)) {
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ret = -EBUSY;
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goto err_out_trdev;
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}
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dev->base_addr = pci_ioaddr;
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dev->irq = pci_irq_line;
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dev->dma = 0;
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dev_info(&pdev->dev, "%s\n", cardinfo->name);
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dev_info(&pdev->dev, " IO: %#4lx IRQ: %d\n", dev->base_addr, dev->irq);
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tms_pci_read_eeprom(dev);
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dev_info(&pdev->dev, " Ring Station Address: %pM\n", dev->dev_addr);
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ret = tmsdev_init(dev, &pdev->dev);
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if (ret) {
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dev_info(&pdev->dev, "unable to get memory for dev->priv.\n");
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goto err_out_region;
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}
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tp = netdev_priv(dev);
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tp->setnselout = tms_pci_setnselout_pins;
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tp->sifreadb = tms_pci_sifreadb;
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tp->sifreadw = tms_pci_sifreadw;
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tp->sifwriteb = tms_pci_sifwriteb;
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tp->sifwritew = tms_pci_sifwritew;
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memcpy(tp->ProductID, cardinfo->name, PROD_ID_SIZE + 1);
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tp->tmspriv = cardinfo;
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dev->netdev_ops = &tms380tr_netdev_ops;
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ret = request_irq(pdev->irq, tms380tr_interrupt, IRQF_SHARED,
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dev->name, dev);
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if (ret)
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goto err_out_tmsdev;
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pci_set_drvdata(pdev, dev);
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SET_NETDEV_DEV(dev, &pdev->dev);
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ret = register_netdev(dev);
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if (ret)
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goto err_out_irq;
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return 0;
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err_out_irq:
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free_irq(pdev->irq, dev);
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err_out_tmsdev:
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pci_set_drvdata(pdev, NULL);
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tmsdev_term(dev);
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err_out_region:
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release_region(pci_ioaddr, TMS_PCI_IO_EXTENT);
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err_out_trdev:
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free_netdev(dev);
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return ret;
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}
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/*
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* Reads MAC address from adapter RAM, which should've read it from
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* the onboard ROM.
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*
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* Calling this on a board that does not support it can be a very
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* dangerous thing. The Madge board, for instance, will lock your
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* machine hard when this is called. Luckily, its supported in a
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* separate driver. --ASF
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*/
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static void tms_pci_read_eeprom(struct net_device *dev)
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{
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int i;
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/* Address: 0000:0000 */
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tms_pci_sifwritew(dev, 0, SIFADX);
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tms_pci_sifwritew(dev, 0, SIFADR);
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/* Read six byte MAC address data */
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dev->addr_len = 6;
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for(i = 0; i < 6; i++)
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dev->dev_addr[i] = tms_pci_sifreadw(dev, SIFINC) >> 8;
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}
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static unsigned short tms_pci_setnselout_pins(struct net_device *dev)
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{
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unsigned short val = 0;
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struct net_local *tp = netdev_priv(dev);
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struct card_info *cardinfo = tp->tmspriv;
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if(tp->DataRate == SPEED_4)
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val |= cardinfo->nselout[0]; /* Set 4Mbps */
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else
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val |= cardinfo->nselout[1]; /* Set 16Mbps */
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return val;
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}
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static void __devexit tms_pci_detach (struct pci_dev *pdev)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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BUG_ON(!dev);
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unregister_netdev(dev);
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release_region(dev->base_addr, TMS_PCI_IO_EXTENT);
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free_irq(dev->irq, dev);
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tmsdev_term(dev);
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free_netdev(dev);
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pci_set_drvdata(pdev, NULL);
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}
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static struct pci_driver tms_pci_driver = {
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.name = "tmspci",
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.id_table = tmspci_pci_tbl,
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.probe = tms_pci_attach,
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.remove = __devexit_p(tms_pci_detach),
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};
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static int __init tms_pci_init (void)
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{
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return pci_register_driver(&tms_pci_driver);
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}
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static void __exit tms_pci_rmmod (void)
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{
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pci_unregister_driver (&tms_pci_driver);
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}
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module_init(tms_pci_init);
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module_exit(tms_pci_rmmod);
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