Merge branch 'linus' into core/iommu
[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
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         if (dev->base_addr)     /* probe specific location */
130                 err = proteon_probe1(dev, dev->base_addr);
131         else {
132                 for (port = portlist; *port; port++) {
133                         err = proteon_probe1(dev, *port);
134                         if (!err)
135                                 break;
136                 }
137         }
138         if (err)
139                 goto out5;
140
141         /* At this point we have found a valid card. */
142
143         if (versionprinted++ == 0)
144                 printk(KERN_DEBUG "%s", version);
145
146         err = -EIO;
147         pdev->dma_mask = &dma_mask;
148         if (tmsdev_init(dev, pdev))
149                 goto out4;
150
151         dev->base_addr &= ~3; 
152                 
153         proteon_read_eeprom(dev);
154
155         printk(KERN_DEBUG "proteon.c:    Ring Station Address: %pM\n",
156                dev->dev_addr);
157                 
158         tp = netdev_priv(dev);
159         tp->setnselout = proteon_setnselout_pins;
160                 
161         tp->sifreadb = proteon_sifreadb;
162         tp->sifreadw = proteon_sifreadw;
163         tp->sifwriteb = proteon_sifwriteb;
164         tp->sifwritew = proteon_sifwritew;
165         
166         memcpy(tp->ProductID, cardname, PROD_ID_SIZE + 1);
167
168         tp->tmspriv = NULL;
169
170         dev->open = proteon_open;
171         dev->stop = tms380tr_close;
172
173         if (dev->irq == 0)
174         {
175                 for(j = 0; irqlist[j] != 0; j++)
176                 {
177                         dev->irq = irqlist[j];
178                         if (!request_irq(dev->irq, tms380tr_interrupt, 0, 
179                                 cardname, dev))
180                                 break;
181                 }
182                 
183                 if(irqlist[j] == 0)
184                 {
185                         printk(KERN_INFO "proteon.c: AutoSelect no IRQ available\n");
186                         goto out3;
187                 }
188         }
189         else
190         {
191                 for(j = 0; irqlist[j] != 0; j++)
192                         if (irqlist[j] == dev->irq)
193                                 break;
194                 if (irqlist[j] == 0)
195                 {
196                         printk(KERN_INFO "proteon.c: Illegal IRQ %d specified\n",
197                                 dev->irq);
198                         goto out3;
199                 }
200                 if (request_irq(dev->irq, tms380tr_interrupt, 0, 
201                         cardname, dev))
202                 {
203                         printk(KERN_INFO "proteon.c: Selected IRQ %d not available\n",
204                                 dev->irq);
205                         goto out3;
206                 }
207         }
208
209         if (dev->dma == 0)
210         {
211                 for(j = 0; dmalist[j] != 0; j++)
212                 {
213                         dev->dma = dmalist[j];
214                         if (!request_dma(dev->dma, cardname))
215                                 break;
216                 }
217
218                 if(dmalist[j] == 0)
219                 {
220                         printk(KERN_INFO "proteon.c: AutoSelect no DMA available\n");
221                         goto out2;
222                 }
223         }
224         else
225         {
226                 for(j = 0; dmalist[j] != 0; j++)
227                         if (dmalist[j] == dev->dma)
228                                 break;
229                 if (dmalist[j] == 0)
230                 {
231                         printk(KERN_INFO "proteon.c: Illegal DMA %d specified\n",
232                                 dev->dma);
233                         goto out2;
234                 }
235                 if (request_dma(dev->dma, cardname))
236                 {
237                         printk(KERN_INFO "proteon.c: Selected DMA %d not available\n",
238                                 dev->dma);
239                         goto out2;
240                 }
241         }
242
243         err = register_netdev(dev);
244         if (err)
245                 goto out;
246
247         printk(KERN_DEBUG "%s:    IO: %#4lx  IRQ: %d  DMA: %d\n",
248                dev->name, dev->base_addr, dev->irq, dev->dma);
249
250         return 0;
251 out:
252         free_dma(dev->dma);
253 out2:
254         free_irq(dev->irq, dev);
255 out3:
256         tmsdev_term(dev);
257 out4:
258         release_region(dev->base_addr, PROTEON_IO_EXTENT);
259 out5:
260         return err;
261 }
262
263 /*
264  * Reads MAC address from adapter RAM, which should've read it from
265  * the onboard ROM.  
266  *
267  * Calling this on a board that does not support it can be a very
268  * dangerous thing.  The Madge board, for instance, will lock your
269  * machine hard when this is called.  Luckily, its supported in a
270  * separate driver.  --ASF
271  */
272 static void proteon_read_eeprom(struct net_device *dev)
273 {
274         int i;
275         
276         /* Address: 0000:0000 */
277         proteon_sifwritew(dev, 0, SIFADX);
278         proteon_sifwritew(dev, 0, SIFADR);      
279         
280         /* Read six byte MAC address data */
281         dev->addr_len = 6;
282         for(i = 0; i < 6; i++)
283                 dev->dev_addr[i] = proteon_sifreadw(dev, SIFINC) >> 8;
284 }
285
286 static unsigned short proteon_setnselout_pins(struct net_device *dev)
287 {
288         return 0;
289 }
290
291 static int proteon_open(struct net_device *dev)
292 {  
293         struct net_local *tp = netdev_priv(dev);
294         unsigned short val = 0;
295         int i;
296
297         /* Proteon reset sequence */
298         outb(0, dev->base_addr + 0x11);
299         mdelay(20);
300         outb(0x04, dev->base_addr + 0x11);
301         mdelay(20);
302         outb(0, dev->base_addr + 0x11);
303         mdelay(100);
304
305         /* set control/status reg */
306         val = inb(dev->base_addr + 0x11);
307         val |= 0x78;
308         val &= 0xf9;
309         if(tp->DataRate == SPEED_4)
310                 val |= 0x20;
311         else
312                 val &= ~0x20;
313
314         outb(val, dev->base_addr + 0x11);
315         outb(0xff, dev->base_addr + 0x12);
316         for(i = 0; irqlist[i] != 0; i++)
317         {
318                 if(irqlist[i] == dev->irq)
319                         break;
320         }
321         val = i;
322         i = (7 - dev->dma) << 4;
323         val |= i;
324         outb(val, dev->base_addr + 0x13);
325
326         return tms380tr_open(dev);
327 }
328
329 #define ISATR_MAX_ADAPTERS 3
330
331 static int io[ISATR_MAX_ADAPTERS];
332 static int irq[ISATR_MAX_ADAPTERS];
333 static int dma[ISATR_MAX_ADAPTERS];
334
335 MODULE_LICENSE("GPL");
336
337 module_param_array(io, int, NULL, 0);
338 module_param_array(irq, int, NULL, 0);
339 module_param_array(dma, int, NULL, 0);
340
341 static struct platform_device *proteon_dev[ISATR_MAX_ADAPTERS];
342
343 static struct platform_driver proteon_driver = {
344         .driver         = {
345                 .name   = "proteon",
346         },
347 };
348
349 static int __init proteon_init(void)
350 {
351         struct net_device *dev;
352         struct platform_device *pdev;
353         int i, num = 0, err = 0;
354
355         err = platform_driver_register(&proteon_driver);
356         if (err)
357                 return err;
358
359         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
360                 dev = alloc_trdev(sizeof(struct net_local));
361                 if (!dev)
362                         continue;
363
364                 dev->base_addr = io[i];
365                 dev->irq = irq[i];
366                 dev->dma = dma[i];
367                 pdev = platform_device_register_simple("proteon",
368                         i, NULL, 0);
369                 if (IS_ERR(pdev)) {
370                         free_netdev(dev);
371                         continue;
372                 }
373                 err = setup_card(dev, &pdev->dev);
374                 if (!err) {
375                         proteon_dev[i] = pdev;
376                         platform_set_drvdata(pdev, dev);
377                         ++num;
378                 } else {
379                         platform_device_unregister(pdev);
380                         free_netdev(dev);
381                 }
382         }
383
384         printk(KERN_NOTICE "proteon.c: %d cards found.\n", num);
385         /* Probe for cards. */
386         if (num == 0) {
387                 printk(KERN_NOTICE "proteon.c: No cards found.\n");
388                 platform_driver_unregister(&proteon_driver);
389                 return -ENODEV;
390         }
391         return 0;
392 }
393
394 static void __exit proteon_cleanup(void)
395 {
396         struct net_device *dev;
397         int i;
398
399         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
400                 struct platform_device *pdev = proteon_dev[i];
401                 
402                 if (!pdev)
403                         continue;
404                 dev = platform_get_drvdata(pdev);
405                 unregister_netdev(dev);
406                 release_region(dev->base_addr, PROTEON_IO_EXTENT);
407                 free_irq(dev->irq, dev);
408                 free_dma(dev->dma);
409                 tmsdev_term(dev);
410                 free_netdev(dev);
411                 platform_set_drvdata(pdev, NULL);
412                 platform_device_unregister(pdev);
413         }
414         platform_driver_unregister(&proteon_driver);
415 }
416
417 module_init(proteon_init);
418 module_exit(proteon_cleanup);