tjh.dev
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kernel
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linux
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
42static char version[] __devinitdata =
43"tmspci.c: v1.02 23/11/2000 by Adam Fritzler\n";
44
45#define TMS_PCI_IO_EXTENT 32
46
47struct card_info {
48 unsigned char nselout[2]; /* NSELOUT vals for 4mb([0]) and 16mb([1]) */
49 char *name;
50};
51
52static 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
59static 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};
66MODULE_DEVICE_TABLE(pci, tmspci_pci_tbl);
67
68MODULE_LICENSE("GPL");
69
70static void tms_pci_read_eeprom(struct net_device *dev);
71static unsigned short tms_pci_setnselout_pins(struct net_device *dev);
72
73static unsigned short tms_pci_sifreadb(struct net_device *dev, unsigned short reg)
74{
75 return inb(dev->base_addr + reg);
76}
77
78static unsigned short tms_pci_sifreadw(struct net_device *dev, unsigned short reg)
79{
80 return inw(dev->base_addr + reg);
81}
82
83static void tms_pci_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
84{
85 outb(val, dev->base_addr + reg);
86}
87
88static void tms_pci_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
89{
90 outw(val, dev->base_addr + reg);
91}
92
93static 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
168err_out_irq:
169 free_irq(pdev->irq, dev);
170err_out_tmsdev:
171 pci_set_drvdata(pdev, NULL);
172 tmsdev_term(dev);
173err_out_region:
174 release_region(pci_ioaddr, TMS_PCI_IO_EXTENT);
175err_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 */
189static 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
203static 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
216static 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
229static 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
236static int __init tms_pci_init (void)
237{
238 return pci_register_driver(&tms_pci_driver);
239}
240
241static void __exit tms_pci_rmmod (void)
242{
243 pci_unregister_driver (&tms_pci_driver);
244}
245
246module_init(tms_pci_init);
247module_exit(tms_pci_rmmod);
248