Merge master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6
[linux-2.6] / drivers / net / tokenring / proteon.c
1 /*
2  *  proteon.c: A network driver for Proteon ISA token ring cards.
3  *
4  *  Based on tmspci written 1999 by Adam Fritzler
5  *  
6  *  Written 2003 by Jochen Friedrich
7  *
8  *  This software may be used and distributed according to the terms
9  *  of the GNU General Public License, incorporated herein by reference.
10  *
11  *  This driver module supports the following cards:
12  *      - Proteon 1392, 1392+
13  *
14  *  Maintainer(s):
15  *    AF        Adam Fritzler           mid@auk.cx
16  *    JF        Jochen Friedrich        jochen@scram.de
17  *
18  *  Modification History:
19  *      02-Jan-03       JF      Created
20  *
21  */
22 static const char version[] = "proteon.c: v1.00 02/01/2003 by Jochen Friedrich\n";
23
24 #include <linux/module.h>
25 #include <linux/kernel.h>
26 #include <linux/delay.h>
27 #include <linux/errno.h>
28 #include <linux/pci.h>
29 #include <linux/init.h>
30 #include <linux/netdevice.h>
31 #include <linux/trdevice.h>
32 #include <linux/platform_device.h>
33
34 #include <asm/system.h>
35 #include <asm/io.h>
36 #include <asm/irq.h>
37 #include <asm/pci.h>
38 #include <asm/dma.h>
39
40 #include "tms380tr.h"
41
42 #define PROTEON_IO_EXTENT 32
43
44 /* A zero-terminated list of I/O addresses to be probed. */
45 static unsigned int portlist[] __initdata = {
46         0x0A20, 0x0E20, 0x1A20, 0x1E20, 0x2A20, 0x2E20, 0x3A20, 0x3E20,// Prot.
47         0x4A20, 0x4E20, 0x5A20, 0x5E20, 0x6A20, 0x6E20, 0x7A20, 0x7E20,// Prot.
48         0x8A20, 0x8E20, 0x9A20, 0x9E20, 0xAA20, 0xAE20, 0xBA20, 0xBE20,// Prot.
49         0xCA20, 0xCE20, 0xDA20, 0xDE20, 0xEA20, 0xEE20, 0xFA20, 0xFE20,// Prot.
50         0
51 };
52
53 /* A zero-terminated list of IRQs to be probed. */
54 static unsigned short irqlist[] = {
55         7, 6, 5, 4, 3, 12, 11, 10, 9,
56         0
57 };
58
59 /* A zero-terminated list of DMAs to be probed. */
60 static int dmalist[] __initdata = {
61         5, 6, 7,
62         0
63 };
64
65 static char cardname[] = "Proteon 1392\0";
66 static u64 dma_mask = ISA_MAX_ADDRESS;
67 static int proteon_open(struct net_device *dev);
68 static void proteon_read_eeprom(struct net_device *dev);
69 static unsigned short proteon_setnselout_pins(struct net_device *dev);
70
71 static unsigned short proteon_sifreadb(struct net_device *dev, unsigned short reg)
72 {
73         return inb(dev->base_addr + reg);
74 }
75
76 static unsigned short proteon_sifreadw(struct net_device *dev, unsigned short reg)
77 {
78         return inw(dev->base_addr + reg);
79 }
80
81 static void proteon_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
82 {
83         outb(val, dev->base_addr + reg);
84 }
85
86 static void proteon_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
87 {
88         outw(val, dev->base_addr + reg);
89 }
90
91 static int __init proteon_probe1(struct net_device *dev, int ioaddr)
92 {
93         unsigned char chk1, chk2;
94         int i;
95
96         if (!request_region(ioaddr, PROTEON_IO_EXTENT, cardname))
97                 return -ENODEV;
98                 
99
100         chk1 = inb(ioaddr + 0x1f);      /* Get Proteon ID reg 1 */
101         if (chk1 != 0x1f) 
102                 goto nodev;
103
104         chk1 = inb(ioaddr + 0x1e) & 0x07;       /* Get Proteon ID reg 0 */
105         for (i=0; i<16; i++) {
106                 chk2 = inb(ioaddr + 0x1e) & 0x07;
107                 if (((chk1 + 1) & 0x07) != chk2)
108                         goto nodev;
109                 chk1 = chk2;
110         }
111
112         dev->base_addr = ioaddr;
113         return (0);
114 nodev:
115         release_region(ioaddr, PROTEON_IO_EXTENT); 
116         return -ENODEV;
117 }
118
119 static int __init setup_card(struct net_device *dev, struct device *pdev)
120 {
121         struct net_local *tp;
122         static int versionprinted;
123         const unsigned *port;
124         int j,err = 0;
125
126         if (!dev)
127                 return -ENOMEM;
128
129         SET_MODULE_OWNER(dev);
130         if (dev->base_addr)     /* probe specific location */
131                 err = proteon_probe1(dev, dev->base_addr);
132         else {
133                 for (port = portlist; *port; port++) {
134                         err = proteon_probe1(dev, *port);
135                         if (!err)
136                                 break;
137                 }
138         }
139         if (err)
140                 goto out5;
141
142         /* At this point we have found a valid card. */
143
144         if (versionprinted++ == 0)
145                 printk(KERN_DEBUG "%s", version);
146
147         err = -EIO;
148         pdev->dma_mask = &dma_mask;
149         if (tmsdev_init(dev, pdev))
150                 goto out4;
151
152         dev->base_addr &= ~3; 
153                 
154         proteon_read_eeprom(dev);
155
156         printk(KERN_DEBUG "proteon.c:    Ring Station Address: ");
157         printk("%2.2x", dev->dev_addr[0]);
158         for (j = 1; j < 6; j++)
159                 printk(":%2.2x", dev->dev_addr[j]);
160         printk("\n");
161                 
162         tp = netdev_priv(dev);
163         tp->setnselout = proteon_setnselout_pins;
164                 
165         tp->sifreadb = proteon_sifreadb;
166         tp->sifreadw = proteon_sifreadw;
167         tp->sifwriteb = proteon_sifwriteb;
168         tp->sifwritew = proteon_sifwritew;
169         
170         memcpy(tp->ProductID, cardname, PROD_ID_SIZE + 1);
171
172         tp->tmspriv = NULL;
173
174         dev->open = proteon_open;
175         dev->stop = tms380tr_close;
176
177         if (dev->irq == 0)
178         {
179                 for(j = 0; irqlist[j] != 0; j++)
180                 {
181                         dev->irq = irqlist[j];
182                         if (!request_irq(dev->irq, tms380tr_interrupt, 0, 
183                                 cardname, dev))
184                                 break;
185                 }
186                 
187                 if(irqlist[j] == 0)
188                 {
189                         printk(KERN_INFO "proteon.c: AutoSelect no IRQ available\n");
190                         goto out3;
191                 }
192         }
193         else
194         {
195                 for(j = 0; irqlist[j] != 0; j++)
196                         if (irqlist[j] == dev->irq)
197                                 break;
198                 if (irqlist[j] == 0)
199                 {
200                         printk(KERN_INFO "proteon.c: Illegal IRQ %d specified\n",
201                                 dev->irq);
202                         goto out3;
203                 }
204                 if (request_irq(dev->irq, tms380tr_interrupt, 0, 
205                         cardname, dev))
206                 {
207                         printk(KERN_INFO "proteon.c: Selected IRQ %d not available\n",
208                                 dev->irq);
209                         goto out3;
210                 }
211         }
212
213         if (dev->dma == 0)
214         {
215                 for(j = 0; dmalist[j] != 0; j++)
216                 {
217                         dev->dma = dmalist[j];
218                         if (!request_dma(dev->dma, cardname))
219                                 break;
220                 }
221
222                 if(dmalist[j] == 0)
223                 {
224                         printk(KERN_INFO "proteon.c: AutoSelect no DMA available\n");
225                         goto out2;
226                 }
227         }
228         else
229         {
230                 for(j = 0; dmalist[j] != 0; j++)
231                         if (dmalist[j] == dev->dma)
232                                 break;
233                 if (dmalist[j] == 0)
234                 {
235                         printk(KERN_INFO "proteon.c: Illegal DMA %d specified\n",
236                                 dev->dma);
237                         goto out2;
238                 }
239                 if (request_dma(dev->dma, cardname))
240                 {
241                         printk(KERN_INFO "proteon.c: Selected DMA %d not available\n",
242                                 dev->dma);
243                         goto out2;
244                 }
245         }
246
247         err = register_netdev(dev);
248         if (err)
249                 goto out;
250
251         printk(KERN_DEBUG "%s:    IO: %#4lx  IRQ: %d  DMA: %d\n",
252                dev->name, dev->base_addr, dev->irq, dev->dma);
253
254         return 0;
255 out:
256         free_dma(dev->dma);
257 out2:
258         free_irq(dev->irq, dev);
259 out3:
260         tmsdev_term(dev);
261 out4:
262         release_region(dev->base_addr, PROTEON_IO_EXTENT);
263 out5:
264         return err;
265 }
266
267 /*
268  * Reads MAC address from adapter RAM, which should've read it from
269  * the onboard ROM.  
270  *
271  * Calling this on a board that does not support it can be a very
272  * dangerous thing.  The Madge board, for instance, will lock your
273  * machine hard when this is called.  Luckily, its supported in a
274  * separate driver.  --ASF
275  */
276 static void proteon_read_eeprom(struct net_device *dev)
277 {
278         int i;
279         
280         /* Address: 0000:0000 */
281         proteon_sifwritew(dev, 0, SIFADX);
282         proteon_sifwritew(dev, 0, SIFADR);      
283         
284         /* Read six byte MAC address data */
285         dev->addr_len = 6;
286         for(i = 0; i < 6; i++)
287                 dev->dev_addr[i] = proteon_sifreadw(dev, SIFINC) >> 8;
288 }
289
290 unsigned short proteon_setnselout_pins(struct net_device *dev)
291 {
292         return 0;
293 }
294
295 static int proteon_open(struct net_device *dev)
296 {  
297         struct net_local *tp = netdev_priv(dev);
298         unsigned short val = 0;
299         int i;
300
301         /* Proteon reset sequence */
302         outb(0, dev->base_addr + 0x11);
303         mdelay(20);
304         outb(0x04, dev->base_addr + 0x11);
305         mdelay(20);
306         outb(0, dev->base_addr + 0x11);
307         mdelay(100);
308
309         /* set control/status reg */
310         val = inb(dev->base_addr + 0x11);
311         val |= 0x78;
312         val &= 0xf9;
313         if(tp->DataRate == SPEED_4)
314                 val |= 0x20;
315         else
316                 val &= ~0x20;
317
318         outb(val, dev->base_addr + 0x11);
319         outb(0xff, dev->base_addr + 0x12);
320         for(i = 0; irqlist[i] != 0; i++)
321         {
322                 if(irqlist[i] == dev->irq)
323                         break;
324         }
325         val = i;
326         i = (7 - dev->dma) << 4;
327         val |= i;
328         outb(val, dev->base_addr + 0x13);
329
330         return tms380tr_open(dev);
331 }
332
333 #define ISATR_MAX_ADAPTERS 3
334
335 static int io[ISATR_MAX_ADAPTERS];
336 static int irq[ISATR_MAX_ADAPTERS];
337 static int dma[ISATR_MAX_ADAPTERS];
338
339 MODULE_LICENSE("GPL");
340
341 module_param_array(io, int, NULL, 0);
342 module_param_array(irq, int, NULL, 0);
343 module_param_array(dma, int, NULL, 0);
344
345 static struct platform_device *proteon_dev[ISATR_MAX_ADAPTERS];
346
347 static struct device_driver proteon_driver = {
348         .name           = "proteon",
349         .bus            = &platform_bus_type,
350 };
351
352 static int __init proteon_init(void)
353 {
354         struct net_device *dev;
355         struct platform_device *pdev;
356         int i, num = 0, err = 0;
357
358         err = driver_register(&proteon_driver);
359         if (err)
360                 return err;
361
362         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
363                 dev = alloc_trdev(sizeof(struct net_local));
364                 if (!dev)
365                         continue;
366
367                 dev->base_addr = io[i];
368                 dev->irq = irq[i];
369                 dev->dma = dma[i];
370                 pdev = platform_device_register_simple("proteon",
371                         i, NULL, 0);
372                 err = setup_card(dev, &pdev->dev);
373                 if (!err) {
374                         proteon_dev[i] = pdev;
375                         dev_set_drvdata(&pdev->dev, dev);
376                         ++num;
377                 } else {
378                         platform_device_unregister(pdev);
379                         free_netdev(dev);
380                 }
381         }
382
383         printk(KERN_NOTICE "proteon.c: %d cards found.\n", num);
384         /* Probe for cards. */
385         if (num == 0) {
386                 printk(KERN_NOTICE "proteon.c: No cards found.\n");
387                 return (-ENODEV);
388         }
389         return (0);
390 }
391
392 static void __exit proteon_cleanup(void)
393 {
394         struct net_device *dev;
395         int i;
396
397         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
398                 struct platform_device *pdev = proteon_dev[i];
399                 
400                 if (!pdev)
401                         continue;
402                 dev = dev_get_drvdata(&pdev->dev);
403                 unregister_netdev(dev);
404                 release_region(dev->base_addr, PROTEON_IO_EXTENT);
405                 free_irq(dev->irq, dev);
406                 free_dma(dev->dma);
407                 tmsdev_term(dev);
408                 free_netdev(dev);
409                 dev_set_drvdata(&pdev->dev, NULL);
410                 platform_device_unregister(pdev);
411         }
412         driver_unregister(&proteon_driver);
413 }
414
415 module_init(proteon_init);
416 module_exit(proteon_cleanup);