Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[sfrench/cifs-2.6.git] / 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
33 #include <asm/system.h>
34 #include <asm/io.h>
35 #include <asm/irq.h>
36 #include <asm/pci.h>
37 #include <asm/dma.h>
38
39 #include "tms380tr.h"
40
41 #define PROTEON_IO_EXTENT 32
42
43 /* A zero-terminated list of I/O addresses to be probed. */
44 static unsigned int portlist[] __initdata = {
45         0x0A20, 0x0E20, 0x1A20, 0x1E20, 0x2A20, 0x2E20, 0x3A20, 0x3E20,// Prot.
46         0x4A20, 0x4E20, 0x5A20, 0x5E20, 0x6A20, 0x6E20, 0x7A20, 0x7E20,// Prot.
47         0x8A20, 0x8E20, 0x9A20, 0x9E20, 0xAA20, 0xAE20, 0xBA20, 0xBE20,// Prot.
48         0xCA20, 0xCE20, 0xDA20, 0xDE20, 0xEA20, 0xEE20, 0xFA20, 0xFE20,// Prot.
49         0
50 };
51
52 /* A zero-terminated list of IRQs to be probed. */
53 static unsigned short irqlist[] = {
54         7, 6, 5, 4, 3, 12, 11, 10, 9,
55         0
56 };
57
58 /* A zero-terminated list of DMAs to be probed. */
59 static int dmalist[] __initdata = {
60         5, 6, 7,
61         0
62 };
63
64 static char cardname[] = "Proteon 1392\0";
65
66 struct net_device *proteon_probe(int unit);
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)
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 out4;
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         if (tmsdev_init(dev, ISA_MAX_ADDRESS, NULL))
149                 goto out4;
150
151         dev->base_addr &= ~3; 
152                 
153         proteon_read_eeprom(dev);
154
155         printk(KERN_DEBUG "%s:    Ring Station Address: ", dev->name);
156         printk("%2.2x", dev->dev_addr[0]);
157         for (j = 1; j < 6; j++)
158                 printk(":%2.2x", dev->dev_addr[j]);
159         printk("\n");
160                 
161         tp = netdev_priv(dev);
162         tp->setnselout = proteon_setnselout_pins;
163                 
164         tp->sifreadb = proteon_sifreadb;
165         tp->sifreadw = proteon_sifreadw;
166         tp->sifwriteb = proteon_sifwriteb;
167         tp->sifwritew = proteon_sifwritew;
168         
169         memcpy(tp->ProductID, cardname, PROD_ID_SIZE + 1);
170
171         tp->tmspriv = NULL;
172
173         dev->open = proteon_open;
174         dev->stop = tms380tr_close;
175
176         if (dev->irq == 0)
177         {
178                 for(j = 0; irqlist[j] != 0; j++)
179                 {
180                         dev->irq = irqlist[j];
181                         if (!request_irq(dev->irq, tms380tr_interrupt, 0, 
182                                 cardname, dev))
183                                 break;
184                 }
185                 
186                 if(irqlist[j] == 0)
187                 {
188                         printk(KERN_INFO "%s: AutoSelect no IRQ available\n", dev->name);
189                         goto out3;
190                 }
191         }
192         else
193         {
194                 for(j = 0; irqlist[j] != 0; j++)
195                         if (irqlist[j] == dev->irq)
196                                 break;
197                 if (irqlist[j] == 0)
198                 {
199                         printk(KERN_INFO "%s: Illegal IRQ %d specified\n",
200                                 dev->name, dev->irq);
201                         goto out3;
202                 }
203                 if (request_irq(dev->irq, tms380tr_interrupt, 0, 
204                         cardname, dev))
205                 {
206                         printk(KERN_INFO "%s: Selected IRQ %d not available\n", 
207                                 dev->name, dev->irq);
208                         goto out3;
209                 }
210         }
211
212         if (dev->dma == 0)
213         {
214                 for(j = 0; dmalist[j] != 0; j++)
215                 {
216                         dev->dma = dmalist[j];
217                         if (!request_dma(dev->dma, cardname))
218                                 break;
219                 }
220
221                 if(dmalist[j] == 0)
222                 {
223                         printk(KERN_INFO "%s: AutoSelect no DMA available\n", dev->name);
224                         goto out2;
225                 }
226         }
227         else
228         {
229                 for(j = 0; dmalist[j] != 0; j++)
230                         if (dmalist[j] == dev->dma)
231                                 break;
232                 if (dmalist[j] == 0)
233                 {
234                         printk(KERN_INFO "%s: Illegal DMA %d specified\n", 
235                                 dev->name, dev->dma);
236                         goto out2;
237                 }
238                 if (request_dma(dev->dma, cardname))
239                 {
240                         printk(KERN_INFO "%s: Selected DMA %d not available\n", 
241                                 dev->name, dev->dma);
242                         goto out2;
243                 }
244         }
245
246         printk(KERN_DEBUG "%s:    IO: %#4lx  IRQ: %d  DMA: %d\n",
247                dev->name, dev->base_addr, dev->irq, dev->dma);
248                 
249         err = register_netdev(dev);
250         if (err)
251                 goto out;
252
253         return 0;
254 out:
255         free_dma(dev->dma);
256 out2:
257         free_irq(dev->irq, dev);
258 out3:
259         tmsdev_term(dev);
260 out4:
261         release_region(dev->base_addr, PROTEON_IO_EXTENT); 
262         return err;
263 }
264
265 struct net_device * __init proteon_probe(int unit)
266 {
267         struct net_device *dev = alloc_trdev(sizeof(struct net_local));
268         int err = 0;
269
270         if (!dev)
271                 return ERR_PTR(-ENOMEM);
272
273         if (unit >= 0) {
274                 sprintf(dev->name, "tr%d", unit);
275                 netdev_boot_setup_check(dev);
276         }
277
278         err = setup_card(dev);
279         if (err)
280                 goto out;
281
282         return dev;
283
284 out:
285         free_netdev(dev);
286         return ERR_PTR(err);
287 }
288
289 /*
290  * Reads MAC address from adapter RAM, which should've read it from
291  * the onboard ROM.  
292  *
293  * Calling this on a board that does not support it can be a very
294  * dangerous thing.  The Madge board, for instance, will lock your
295  * machine hard when this is called.  Luckily, its supported in a
296  * separate driver.  --ASF
297  */
298 static void proteon_read_eeprom(struct net_device *dev)
299 {
300         int i;
301         
302         /* Address: 0000:0000 */
303         proteon_sifwritew(dev, 0, SIFADX);
304         proteon_sifwritew(dev, 0, SIFADR);      
305         
306         /* Read six byte MAC address data */
307         dev->addr_len = 6;
308         for(i = 0; i < 6; i++)
309                 dev->dev_addr[i] = proteon_sifreadw(dev, SIFINC) >> 8;
310 }
311
312 unsigned short proteon_setnselout_pins(struct net_device *dev)
313 {
314         return 0;
315 }
316
317 static int proteon_open(struct net_device *dev)
318 {  
319         struct net_local *tp = netdev_priv(dev);
320         unsigned short val = 0;
321         int i;
322
323         /* Proteon reset sequence */
324         outb(0, dev->base_addr + 0x11);
325         mdelay(20);
326         outb(0x04, dev->base_addr + 0x11);
327         mdelay(20);
328         outb(0, dev->base_addr + 0x11);
329         mdelay(100);
330
331         /* set control/status reg */
332         val = inb(dev->base_addr + 0x11);
333         val |= 0x78;
334         val &= 0xf9;
335         if(tp->DataRate == SPEED_4)
336                 val |= 0x20;
337         else
338                 val &= ~0x20;
339
340         outb(val, dev->base_addr + 0x11);
341         outb(0xff, dev->base_addr + 0x12);
342         for(i = 0; irqlist[i] != 0; i++)
343         {
344                 if(irqlist[i] == dev->irq)
345                         break;
346         }
347         val = i;
348         i = (7 - dev->dma) << 4;
349         val |= i;
350         outb(val, dev->base_addr + 0x13);
351
352         return tms380tr_open(dev);
353 }
354
355 #ifdef MODULE
356
357 #define ISATR_MAX_ADAPTERS 3
358
359 static int io[ISATR_MAX_ADAPTERS];
360 static int irq[ISATR_MAX_ADAPTERS];
361 static int dma[ISATR_MAX_ADAPTERS];
362
363 MODULE_LICENSE("GPL");
364
365 module_param_array(io, int, NULL, 0);
366 module_param_array(irq, int, NULL, 0);
367 module_param_array(dma, int, NULL, 0);
368
369 static struct net_device *proteon_dev[ISATR_MAX_ADAPTERS];
370
371 int init_module(void)
372 {
373         struct net_device *dev;
374         int i, num = 0, err = 0;
375
376         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
377                 dev = alloc_trdev(sizeof(struct net_local));
378                 if (!dev)
379                         continue;
380
381                 dev->base_addr = io[i];
382                 dev->irq = irq[i];
383                 dev->dma = dma[i];
384                 err = setup_card(dev);
385                 if (!err) {
386                         proteon_dev[i] = dev;
387                         ++num;
388                 } else {
389                         free_netdev(dev);
390                 }
391         }
392
393         printk(KERN_NOTICE "proteon.c: %d cards found.\n", num);
394         /* Probe for cards. */
395         if (num == 0) {
396                 printk(KERN_NOTICE "proteon.c: No cards found.\n");
397                 return (-ENODEV);
398         }
399         return (0);
400 }
401
402 void cleanup_module(void)
403 {
404         int i;
405
406         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
407                 struct net_device *dev = proteon_dev[i];
408                 
409                 if (!dev) 
410                         continue;
411                 
412                 unregister_netdev(dev);
413                 release_region(dev->base_addr, PROTEON_IO_EXTENT);
414                 free_irq(dev->irq, dev);
415                 free_dma(dev->dma);
416                 tmsdev_term(dev);
417                 free_netdev(dev);
418         }
419 }
420 #endif /* MODULE */
421