Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * skisa.c: A network driver for SK-NET TMS380-based ISA token ring cards. | |
3 | * | |
4 | * Based on tmspci written 1999 by Adam Fritzler | |
5 | * | |
6 | * Written 2000 by Jochen Friedrich | |
7 | * Dedicated to my girlfriend Steffi Bopp | |
8 | * | |
9 | * This software may be used and distributed according to the terms | |
10 | * of the GNU General Public License, incorporated herein by reference. | |
11 | * | |
12 | * This driver module supports the following cards: | |
13 | * - SysKonnect TR4/16(+) ISA (SK-4190) | |
14 | * | |
15 | * Maintainer(s): | |
726a6459 | 16 | * AF Adam Fritzler |
1da177e4 LT |
17 | * JF Jochen Friedrich jochen@scram.de |
18 | * | |
19 | * Modification History: | |
20 | * 14-Jan-01 JF Created | |
21 | * 28-Oct-02 JF Fixed probe of card for static compilation. | |
22 | * Fixed module init to not make hotplug go wild. | |
23 | * 09-Nov-02 JF Fixed early bail out on out of memory | |
24 | * situations if multiple cards are found. | |
25 | * Cleaned up some unnecessary console SPAM. | |
26 | * 09-Dec-02 JF Fixed module reference counting. | |
27 | * 02-Jan-03 JF Renamed to skisa.c | |
28 | * | |
29 | */ | |
30 | static const char version[] = "skisa.c: v1.03 09/12/2002 by Jochen Friedrich\n"; | |
31 | ||
32 | #include <linux/module.h> | |
33 | #include <linux/kernel.h> | |
34 | #include <linux/errno.h> | |
35 | #include <linux/pci.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/netdevice.h> | |
38 | #include <linux/trdevice.h> | |
d052d1be | 39 | #include <linux/platform_device.h> |
1da177e4 LT |
40 | |
41 | #include <asm/system.h> | |
42 | #include <asm/io.h> | |
43 | #include <asm/irq.h> | |
44 | #include <asm/pci.h> | |
45 | #include <asm/dma.h> | |
46 | ||
47 | #include "tms380tr.h" | |
48 | ||
49 | #define SK_ISA_IO_EXTENT 32 | |
50 | ||
51 | /* A zero-terminated list of I/O addresses to be probed. */ | |
52 | static unsigned int portlist[] __initdata = { | |
53 | 0x0A20, 0x1A20, 0x0B20, 0x1B20, 0x0980, 0x1980, 0x0900, 0x1900,// SK | |
54 | 0 | |
55 | }; | |
56 | ||
57 | /* A zero-terminated list of IRQs to be probed. | |
58 | * Used again after initial probe for sktr_chipset_init, called from sktr_open. | |
59 | */ | |
60 | static const unsigned short irqlist[] = { | |
61 | 3, 5, 9, 10, 11, 12, 15, | |
62 | 0 | |
63 | }; | |
64 | ||
65 | /* A zero-terminated list of DMAs to be probed. */ | |
66 | static int dmalist[] __initdata = { | |
67 | 5, 6, 7, | |
68 | 0 | |
69 | }; | |
70 | ||
71 | static char isa_cardname[] = "SK NET TR 4/16 ISA\0"; | |
504ff16c | 72 | static u64 dma_mask = ISA_MAX_ADDRESS; |
1da177e4 LT |
73 | static int sk_isa_open(struct net_device *dev); |
74 | static void sk_isa_read_eeprom(struct net_device *dev); | |
75 | static unsigned short sk_isa_setnselout_pins(struct net_device *dev); | |
76 | ||
77 | static unsigned short sk_isa_sifreadb(struct net_device *dev, unsigned short reg) | |
78 | { | |
79 | return inb(dev->base_addr + reg); | |
80 | } | |
81 | ||
82 | static unsigned short sk_isa_sifreadw(struct net_device *dev, unsigned short reg) | |
83 | { | |
84 | return inw(dev->base_addr + reg); | |
85 | } | |
86 | ||
87 | static void sk_isa_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg) | |
88 | { | |
89 | outb(val, dev->base_addr + reg); | |
90 | } | |
91 | ||
92 | static void sk_isa_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg) | |
93 | { | |
94 | outw(val, dev->base_addr + reg); | |
95 | } | |
96 | ||
97 | ||
98 | static int __init sk_isa_probe1(struct net_device *dev, int ioaddr) | |
99 | { | |
100 | unsigned char old, chk1, chk2; | |
101 | ||
102 | if (!request_region(ioaddr, SK_ISA_IO_EXTENT, isa_cardname)) | |
103 | return -ENODEV; | |
104 | ||
105 | old = inb(ioaddr + SIFADR); /* Get the old SIFADR value */ | |
106 | ||
107 | chk1 = 0; /* Begin with check value 0 */ | |
108 | do { | |
109 | /* Write new SIFADR value */ | |
110 | outb(chk1, ioaddr + SIFADR); | |
111 | ||
112 | /* Read, invert and write */ | |
113 | chk2 = inb(ioaddr + SIFADD); | |
114 | chk2 ^= 0x0FE; | |
115 | outb(chk2, ioaddr + SIFADR); | |
116 | ||
117 | /* Read, invert and compare */ | |
118 | chk2 = inb(ioaddr + SIFADD); | |
119 | chk2 ^= 0x0FE; | |
120 | ||
121 | if(chk1 != chk2) { | |
122 | release_region(ioaddr, SK_ISA_IO_EXTENT); | |
123 | return -ENODEV; | |
124 | } | |
125 | ||
126 | chk1 -= 2; | |
127 | } while(chk1 != 0); /* Repeat 128 times (all byte values) */ | |
128 | ||
129 | /* Restore the SIFADR value */ | |
130 | outb(old, ioaddr + SIFADR); | |
131 | ||
132 | dev->base_addr = ioaddr; | |
133 | return 0; | |
134 | } | |
135 | ||
79f8ae3a SH |
136 | static struct net_device_ops sk_isa_netdev_ops __read_mostly; |
137 | ||
504ff16c | 138 | static int __init setup_card(struct net_device *dev, struct device *pdev) |
1da177e4 LT |
139 | { |
140 | struct net_local *tp; | |
141 | static int versionprinted; | |
142 | const unsigned *port; | |
143 | int j, err = 0; | |
144 | ||
145 | if (!dev) | |
146 | return -ENOMEM; | |
147 | ||
1da177e4 LT |
148 | if (dev->base_addr) /* probe specific location */ |
149 | err = sk_isa_probe1(dev, dev->base_addr); | |
150 | else { | |
151 | for (port = portlist; *port; port++) { | |
152 | err = sk_isa_probe1(dev, *port); | |
153 | if (!err) | |
154 | break; | |
155 | } | |
156 | } | |
157 | if (err) | |
504ff16c | 158 | goto out5; |
1da177e4 LT |
159 | |
160 | /* At this point we have found a valid card. */ | |
161 | ||
162 | if (versionprinted++ == 0) | |
163 | printk(KERN_DEBUG "%s", version); | |
164 | ||
165 | err = -EIO; | |
504ff16c | 166 | pdev->dma_mask = &dma_mask; |
84c3ea01 | 167 | if (tmsdev_init(dev, pdev)) |
1da177e4 LT |
168 | goto out4; |
169 | ||
170 | dev->base_addr &= ~3; | |
171 | ||
172 | sk_isa_read_eeprom(dev); | |
173 | ||
e174961c JB |
174 | printk(KERN_DEBUG "skisa.c: Ring Station Address: %pM\n", |
175 | dev->dev_addr); | |
1da177e4 LT |
176 | |
177 | tp = netdev_priv(dev); | |
178 | tp->setnselout = sk_isa_setnselout_pins; | |
179 | ||
180 | tp->sifreadb = sk_isa_sifreadb; | |
181 | tp->sifreadw = sk_isa_sifreadw; | |
182 | tp->sifwriteb = sk_isa_sifwriteb; | |
183 | tp->sifwritew = sk_isa_sifwritew; | |
184 | ||
185 | memcpy(tp->ProductID, isa_cardname, PROD_ID_SIZE + 1); | |
186 | ||
187 | tp->tmspriv = NULL; | |
188 | ||
79f8ae3a | 189 | dev->netdev_ops = &sk_isa_netdev_ops; |
1da177e4 LT |
190 | |
191 | if (dev->irq == 0) | |
192 | { | |
193 | for(j = 0; irqlist[j] != 0; j++) | |
194 | { | |
195 | dev->irq = irqlist[j]; | |
196 | if (!request_irq(dev->irq, tms380tr_interrupt, 0, | |
197 | isa_cardname, dev)) | |
198 | break; | |
199 | } | |
200 | ||
201 | if(irqlist[j] == 0) | |
202 | { | |
504ff16c | 203 | printk(KERN_INFO "skisa.c: AutoSelect no IRQ available\n"); |
1da177e4 LT |
204 | goto out3; |
205 | } | |
206 | } | |
207 | else | |
208 | { | |
209 | for(j = 0; irqlist[j] != 0; j++) | |
210 | if (irqlist[j] == dev->irq) | |
211 | break; | |
212 | if (irqlist[j] == 0) | |
213 | { | |
504ff16c JF |
214 | printk(KERN_INFO "skisa.c: Illegal IRQ %d specified\n", |
215 | dev->irq); | |
1da177e4 LT |
216 | goto out3; |
217 | } | |
218 | if (request_irq(dev->irq, tms380tr_interrupt, 0, | |
219 | isa_cardname, dev)) | |
220 | { | |
504ff16c JF |
221 | printk(KERN_INFO "skisa.c: Selected IRQ %d not available\n", |
222 | dev->irq); | |
1da177e4 LT |
223 | goto out3; |
224 | } | |
225 | } | |
226 | ||
227 | if (dev->dma == 0) | |
228 | { | |
229 | for(j = 0; dmalist[j] != 0; j++) | |
230 | { | |
231 | dev->dma = dmalist[j]; | |
232 | if (!request_dma(dev->dma, isa_cardname)) | |
233 | break; | |
234 | } | |
235 | ||
236 | if(dmalist[j] == 0) | |
237 | { | |
504ff16c | 238 | printk(KERN_INFO "skisa.c: AutoSelect no DMA available\n"); |
1da177e4 LT |
239 | goto out2; |
240 | } | |
241 | } | |
242 | else | |
243 | { | |
244 | for(j = 0; dmalist[j] != 0; j++) | |
245 | if (dmalist[j] == dev->dma) | |
246 | break; | |
247 | if (dmalist[j] == 0) | |
248 | { | |
504ff16c JF |
249 | printk(KERN_INFO "skisa.c: Illegal DMA %d specified\n", |
250 | dev->dma); | |
1da177e4 LT |
251 | goto out2; |
252 | } | |
253 | if (request_dma(dev->dma, isa_cardname)) | |
254 | { | |
504ff16c JF |
255 | printk(KERN_INFO "skisa.c: Selected DMA %d not available\n", |
256 | dev->dma); | |
1da177e4 LT |
257 | goto out2; |
258 | } | |
259 | } | |
260 | ||
1da177e4 LT |
261 | err = register_netdev(dev); |
262 | if (err) | |
263 | goto out; | |
264 | ||
504ff16c JF |
265 | printk(KERN_DEBUG "%s: IO: %#4lx IRQ: %d DMA: %d\n", |
266 | dev->name, dev->base_addr, dev->irq, dev->dma); | |
267 | ||
1da177e4 LT |
268 | return 0; |
269 | out: | |
270 | free_dma(dev->dma); | |
271 | out2: | |
272 | free_irq(dev->irq, dev); | |
273 | out3: | |
274 | tmsdev_term(dev); | |
275 | out4: | |
504ff16c JF |
276 | release_region(dev->base_addr, SK_ISA_IO_EXTENT); |
277 | out5: | |
1da177e4 LT |
278 | return err; |
279 | } | |
280 | ||
1da177e4 LT |
281 | /* |
282 | * Reads MAC address from adapter RAM, which should've read it from | |
283 | * the onboard ROM. | |
284 | * | |
285 | * Calling this on a board that does not support it can be a very | |
286 | * dangerous thing. The Madge board, for instance, will lock your | |
287 | * machine hard when this is called. Luckily, its supported in a | |
288 | * separate driver. --ASF | |
289 | */ | |
290 | static void sk_isa_read_eeprom(struct net_device *dev) | |
291 | { | |
292 | int i; | |
293 | ||
294 | /* Address: 0000:0000 */ | |
295 | sk_isa_sifwritew(dev, 0, SIFADX); | |
296 | sk_isa_sifwritew(dev, 0, SIFADR); | |
297 | ||
298 | /* Read six byte MAC address data */ | |
299 | dev->addr_len = 6; | |
300 | for(i = 0; i < 6; i++) | |
301 | dev->dev_addr[i] = sk_isa_sifreadw(dev, SIFINC) >> 8; | |
302 | } | |
303 | ||
27cd6ae5 | 304 | static unsigned short sk_isa_setnselout_pins(struct net_device *dev) |
1da177e4 LT |
305 | { |
306 | return 0; | |
307 | } | |
308 | ||
309 | static int sk_isa_open(struct net_device *dev) | |
310 | { | |
311 | struct net_local *tp = netdev_priv(dev); | |
312 | unsigned short val = 0; | |
313 | unsigned short oldval; | |
314 | int i; | |
315 | ||
316 | val = 0; | |
317 | for(i = 0; irqlist[i] != 0; i++) | |
318 | { | |
319 | if(irqlist[i] == dev->irq) | |
320 | break; | |
321 | } | |
322 | ||
323 | val |= CYCLE_TIME << 2; | |
324 | val |= i << 4; | |
325 | i = dev->dma - 5; | |
326 | val |= i; | |
327 | if(tp->DataRate == SPEED_4) | |
328 | val |= LINE_SPEED_BIT; | |
329 | else | |
330 | val &= ~LINE_SPEED_BIT; | |
331 | oldval = sk_isa_sifreadb(dev, POSREG); | |
332 | /* Leave cycle bits alone */ | |
333 | oldval |= 0xf3; | |
334 | val &= oldval; | |
335 | sk_isa_sifwriteb(dev, val, POSREG); | |
336 | ||
337 | return tms380tr_open(dev); | |
338 | } | |
339 | ||
1da177e4 LT |
340 | #define ISATR_MAX_ADAPTERS 3 |
341 | ||
342 | static int io[ISATR_MAX_ADAPTERS]; | |
343 | static int irq[ISATR_MAX_ADAPTERS]; | |
344 | static int dma[ISATR_MAX_ADAPTERS]; | |
345 | ||
346 | MODULE_LICENSE("GPL"); | |
347 | ||
348 | module_param_array(io, int, NULL, 0); | |
349 | module_param_array(irq, int, NULL, 0); | |
350 | module_param_array(dma, int, NULL, 0); | |
351 | ||
504ff16c | 352 | static struct platform_device *sk_isa_dev[ISATR_MAX_ADAPTERS]; |
1da177e4 | 353 | |
3ae5eaec RK |
354 | static struct platform_driver sk_isa_driver = { |
355 | .driver = { | |
356 | .name = "skisa", | |
357 | }, | |
504ff16c JF |
358 | }; |
359 | ||
360 | static int __init sk_isa_init(void) | |
1da177e4 LT |
361 | { |
362 | struct net_device *dev; | |
504ff16c | 363 | struct platform_device *pdev; |
1da177e4 LT |
364 | int i, num = 0, err = 0; |
365 | ||
79f8ae3a SH |
366 | sk_isa_netdev_ops = tms380tr_netdev_ops; |
367 | sk_isa_netdev_ops.ndo_open = sk_isa_open; | |
368 | sk_isa_netdev_ops.ndo_stop = tms380tr_close; | |
369 | ||
3ae5eaec | 370 | err = platform_driver_register(&sk_isa_driver); |
504ff16c JF |
371 | if (err) |
372 | return err; | |
373 | ||
1da177e4 LT |
374 | for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) { |
375 | dev = alloc_trdev(sizeof(struct net_local)); | |
376 | if (!dev) | |
377 | continue; | |
378 | ||
379 | dev->base_addr = io[i]; | |
380 | dev->irq = irq[i]; | |
381 | dev->dma = dma[i]; | |
504ff16c JF |
382 | pdev = platform_device_register_simple("skisa", |
383 | i, NULL, 0); | |
9d4df9e0 AM |
384 | if (IS_ERR(pdev)) { |
385 | free_netdev(dev); | |
386 | continue; | |
387 | } | |
504ff16c | 388 | err = setup_card(dev, &pdev->dev); |
1da177e4 | 389 | if (!err) { |
504ff16c | 390 | sk_isa_dev[i] = pdev; |
3ae5eaec | 391 | platform_set_drvdata(sk_isa_dev[i], dev); |
1da177e4 LT |
392 | ++num; |
393 | } else { | |
504ff16c | 394 | platform_device_unregister(pdev); |
1da177e4 LT |
395 | free_netdev(dev); |
396 | } | |
397 | } | |
398 | ||
399 | printk(KERN_NOTICE "skisa.c: %d cards found.\n", num); | |
400 | /* Probe for cards. */ | |
401 | if (num == 0) { | |
402 | printk(KERN_NOTICE "skisa.c: No cards found.\n"); | |
9d4df9e0 AM |
403 | platform_driver_unregister(&sk_isa_driver); |
404 | return -ENODEV; | |
1da177e4 | 405 | } |
9d4df9e0 | 406 | return 0; |
1da177e4 LT |
407 | } |
408 | ||
504ff16c | 409 | static void __exit sk_isa_cleanup(void) |
1da177e4 | 410 | { |
504ff16c | 411 | struct net_device *dev; |
1da177e4 LT |
412 | int i; |
413 | ||
414 | for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) { | |
504ff16c | 415 | struct platform_device *pdev = sk_isa_dev[i]; |
1da177e4 | 416 | |
504ff16c | 417 | if (!pdev) |
1da177e4 | 418 | continue; |
3ae5eaec | 419 | dev = platform_get_drvdata(pdev); |
1da177e4 LT |
420 | unregister_netdev(dev); |
421 | release_region(dev->base_addr, SK_ISA_IO_EXTENT); | |
422 | free_irq(dev->irq, dev); | |
423 | free_dma(dev->dma); | |
424 | tmsdev_term(dev); | |
425 | free_netdev(dev); | |
3ae5eaec | 426 | platform_set_drvdata(pdev, NULL); |
504ff16c | 427 | platform_device_unregister(pdev); |
1da177e4 | 428 | } |
3ae5eaec | 429 | platform_driver_unregister(&sk_isa_driver); |
1da177e4 | 430 | } |
1da177e4 | 431 | |
504ff16c JF |
432 | module_init(sk_isa_init); |
433 | module_exit(sk_isa_cleanup); |