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
tms_pci_sifreadb(struct net_device * dev,unsigned short reg)74 static unsigned short tms_pci_sifreadb(struct net_device *dev, unsigned short reg)
75 {
76 return inb(dev->base_addr + reg);
77 }
78
tms_pci_sifreadw(struct net_device * dev,unsigned short reg)79 static unsigned short tms_pci_sifreadw(struct net_device *dev, unsigned short reg)
80 {
81 return inw(dev->base_addr + reg);
82 }
83
tms_pci_sifwriteb(struct net_device * dev,unsigned short val,unsigned short reg)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
tms_pci_sifwritew(struct net_device * dev,unsigned short val,unsigned short reg)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
tms_pci_attach(struct pci_dev * pdev,const struct pci_device_id * ent)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 dev_info(&pdev->dev, "%s\n", cardinfo->name);
129 dev_info(&pdev->dev, " IO: %#4lx IRQ: %d\n", dev->base_addr, dev->irq);
130
131 tms_pci_read_eeprom(dev);
132
133 dev_info(&pdev->dev, " Ring Station Address: %pM\n", dev->dev_addr);
134
135 ret = tmsdev_init(dev, &pdev->dev);
136 if (ret) {
137 dev_info(&pdev->dev, "unable to get memory for dev->priv.\n");
138 goto err_out_region;
139 }
140
141 tp = netdev_priv(dev);
142 tp->setnselout = tms_pci_setnselout_pins;
143
144 tp->sifreadb = tms_pci_sifreadb;
145 tp->sifreadw = tms_pci_sifreadw;
146 tp->sifwriteb = tms_pci_sifwriteb;
147 tp->sifwritew = tms_pci_sifwritew;
148
149 memcpy(tp->ProductID, cardinfo->name, PROD_ID_SIZE + 1);
150
151 tp->tmspriv = cardinfo;
152
153 dev->netdev_ops = &tms380tr_netdev_ops;
154
155 ret = request_irq(pdev->irq, tms380tr_interrupt, IRQF_SHARED,
156 dev->name, dev);
157 if (ret)
158 goto err_out_tmsdev;
159
160 pci_set_drvdata(pdev, dev);
161 SET_NETDEV_DEV(dev, &pdev->dev);
162
163 ret = register_netdev(dev);
164 if (ret)
165 goto err_out_irq;
166
167 return 0;
168
169 err_out_irq:
170 free_irq(pdev->irq, dev);
171 err_out_tmsdev:
172 pci_set_drvdata(pdev, NULL);
173 tmsdev_term(dev);
174 err_out_region:
175 release_region(pci_ioaddr, TMS_PCI_IO_EXTENT);
176 err_out_trdev:
177 free_netdev(dev);
178 return ret;
179 }
180
181 /*
182 * Reads MAC address from adapter RAM, which should've read it from
183 * the onboard ROM.
184 *
185 * Calling this on a board that does not support it can be a very
186 * dangerous thing. The Madge board, for instance, will lock your
187 * machine hard when this is called. Luckily, its supported in a
188 * separate driver. --ASF
189 */
tms_pci_read_eeprom(struct net_device * dev)190 static void tms_pci_read_eeprom(struct net_device *dev)
191 {
192 int i;
193
194 /* Address: 0000:0000 */
195 tms_pci_sifwritew(dev, 0, SIFADX);
196 tms_pci_sifwritew(dev, 0, SIFADR);
197
198 /* Read six byte MAC address data */
199 dev->addr_len = 6;
200 for(i = 0; i < 6; i++)
201 dev->dev_addr[i] = tms_pci_sifreadw(dev, SIFINC) >> 8;
202 }
203
tms_pci_setnselout_pins(struct net_device * dev)204 static unsigned short tms_pci_setnselout_pins(struct net_device *dev)
205 {
206 unsigned short val = 0;
207 struct net_local *tp = netdev_priv(dev);
208 struct card_info *cardinfo = tp->tmspriv;
209
210 if(tp->DataRate == SPEED_4)
211 val |= cardinfo->nselout[0]; /* Set 4Mbps */
212 else
213 val |= cardinfo->nselout[1]; /* Set 16Mbps */
214 return val;
215 }
216
tms_pci_detach(struct pci_dev * pdev)217 static void __devexit tms_pci_detach (struct pci_dev *pdev)
218 {
219 struct net_device *dev = pci_get_drvdata(pdev);
220
221 BUG_ON(!dev);
222 unregister_netdev(dev);
223 release_region(dev->base_addr, TMS_PCI_IO_EXTENT);
224 free_irq(dev->irq, dev);
225 tmsdev_term(dev);
226 free_netdev(dev);
227 pci_set_drvdata(pdev, NULL);
228 }
229
230 static struct pci_driver tms_pci_driver = {
231 .name = "tmspci",
232 .id_table = tmspci_pci_tbl,
233 .probe = tms_pci_attach,
234 .remove = __devexit_p(tms_pci_detach),
235 };
236
tms_pci_init(void)237 static int __init tms_pci_init (void)
238 {
239 return pci_register_driver(&tms_pci_driver);
240 }
241
tms_pci_rmmod(void)242 static void __exit tms_pci_rmmod (void)
243 {
244 pci_unregister_driver (&tms_pci_driver);
245 }
246
247 module_init(tms_pci_init);
248 module_exit(tms_pci_rmmod);
249
250