]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | es3210.c | |
3 | ||
4 | Linux driver for Racal-Interlan ES3210 EISA Network Adapter | |
5 | ||
6 | Copyright (C) 1996, Paul Gortmaker. | |
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 | Information and Code Sources: | |
12 | ||
13 | 1) The existing myriad of Linux 8390 drivers written by Donald Becker. | |
14 | ||
15 | 2) Once again Russ Nelson's asm packet driver provided additional info. | |
16 | ||
17 | 3) Info for getting IRQ and sh-mem gleaned from the EISA cfg files. | |
18 | Too bad it doesn't work -- see below. | |
19 | ||
20 | The ES3210 is an EISA shared memory NS8390 implementation. Note | |
21 | that all memory copies to/from the board must be 32bit transfers. | |
22 | Which rules out using eth_io_copy_and_sum() in this driver. | |
23 | ||
24 | Apparently there are two slightly different revisions of the | |
25 | card, since there are two distinct EISA cfg files (!rii0101.cfg | |
26 | and !rii0102.cfg) One has media select in the cfg file and the | |
27 | other doesn't. Hopefully this will work with either. | |
28 | ||
29 | That is about all I can tell you about it, having never actually | |
30 | even seen one of these cards. :) Try http://www.interlan.com | |
31 | if you want more info. | |
32 | ||
33 | Thanks go to Mark Salazar for testing v0.02 of this driver. | |
34 | ||
35 | Bugs, to-fix, etc: | |
36 | ||
37 | 1) The EISA cfg ports that are *supposed* to have the IRQ and shared | |
38 | mem values just read 0xff all the time. Hrrmpf. Apparently the | |
39 | same happens with the packet driver as the code for reading | |
40 | these registers is disabled there. In the meantime, boot with: | |
41 | ether=<IRQ>,0,0x<shared_mem_addr>,eth0 to override the IRQ and | |
42 | shared memory detection. (The i/o port detection is okay.) | |
43 | ||
44 | 2) Module support currently untested. Probably works though. | |
45 | ||
46 | */ | |
47 | ||
48 | static const char version[] = | |
49 | "es3210.c: Driver revision v0.03, 14/09/96\n"; | |
50 | ||
51 | #include <linux/module.h> | |
52 | #include <linux/eisa.h> | |
53 | #include <linux/kernel.h> | |
54 | #include <linux/errno.h> | |
55 | #include <linux/string.h> | |
56 | #include <linux/init.h> | |
57 | #include <linux/netdevice.h> | |
58 | #include <linux/etherdevice.h> | |
59 | ||
60 | #include <asm/io.h> | |
61 | #include <asm/system.h> | |
62 | ||
63 | #include "8390.h" | |
64 | ||
65 | static int es_probe1(struct net_device *dev, int ioaddr); | |
66 | ||
67 | static int es_open(struct net_device *dev); | |
68 | static int es_close(struct net_device *dev); | |
69 | ||
70 | static void es_reset_8390(struct net_device *dev); | |
71 | ||
72 | static void es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page); | |
73 | static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset); | |
74 | static void es_block_output(struct net_device *dev, int count, const unsigned char *buf, int start_page); | |
75 | ||
76 | #define ES_START_PG 0x00 /* First page of TX buffer */ | |
77 | #define ES_STOP_PG 0x40 /* Last page +1 of RX ring */ | |
78 | ||
79 | #define ES_IO_EXTENT 0x37 /* The cfg file says 0xc90 -> 0xcc7 */ | |
80 | #define ES_ID_PORT 0xc80 /* Same for all EISA cards */ | |
81 | #define ES_SA_PROM 0xc90 /* Start of e'net addr. */ | |
82 | #define ES_RESET_PORT 0xc84 /* From the packet driver source */ | |
83 | #define ES_NIC_OFFSET 0xca0 /* Hello, the 8390 is *here* */ | |
84 | ||
85 | #define ES_ADDR0 0x02 /* 3 byte vendor prefix */ | |
86 | #define ES_ADDR1 0x07 | |
87 | #define ES_ADDR2 0x01 | |
88 | ||
89 | /* | |
90 | * Two card revisions. EISA ID's are always rev. minor, rev. major,, and | |
91 | * then the three vendor letters stored in 5 bits each, with an "a" = 1. | |
92 | * For eg: "rii" = 10010 01001 01001 = 0x4929, which is how the EISA | |
93 | * config utility determines automagically what config file(s) to use. | |
94 | */ | |
95 | #define ES_EISA_ID1 0x01012949 /* !rii0101.cfg */ | |
96 | #define ES_EISA_ID2 0x02012949 /* !rii0102.cfg */ | |
97 | ||
98 | #define ES_CFG1 0xcc0 /* IOPORT(1) --> IOPORT(6) in cfg file */ | |
99 | #define ES_CFG2 0xcc1 | |
100 | #define ES_CFG3 0xcc2 | |
101 | #define ES_CFG4 0xcc3 | |
102 | #define ES_CFG5 0xcc4 | |
103 | #define ES_CFG6 0xc84 /* NB: 0xc84 is also "reset" port. */ | |
104 | ||
105 | /* | |
106 | * You can OR any of the following bits together and assign it | |
107 | * to ES_DEBUG to get verbose driver info during operation. | |
108 | * Some of these don't do anything yet. | |
109 | */ | |
110 | ||
111 | #define ES_D_PROBE 0x01 | |
112 | #define ES_D_RX_PKT 0x02 | |
113 | #define ES_D_TX_PKT 0x04 | |
114 | #define ED_D_IRQ 0x08 | |
115 | ||
116 | #define ES_DEBUG 0 | |
117 | ||
118 | static unsigned char lo_irq_map[] __initdata = {3, 4, 5, 6, 7, 9, 10}; | |
119 | static unsigned char hi_irq_map[] __initdata = {11, 12, 0, 14, 0, 0, 0, 15}; | |
120 | ||
121 | /* | |
122 | * Probe for the card. The best way is to read the EISA ID if it | |
123 | * is known. Then we check the prefix of the station address | |
124 | * PROM for a match against the Racal-Interlan assigned value. | |
125 | */ | |
126 | ||
127 | static int __init do_es_probe(struct net_device *dev) | |
128 | { | |
129 | unsigned short ioaddr = dev->base_addr; | |
130 | int irq = dev->irq; | |
131 | int mem_start = dev->mem_start; | |
132 | ||
133 | SET_MODULE_OWNER(dev); | |
134 | ||
135 | if (ioaddr > 0x1ff) /* Check a single specified location. */ | |
136 | return es_probe1(dev, ioaddr); | |
137 | else if (ioaddr > 0) /* Don't probe at all. */ | |
138 | return -ENXIO; | |
139 | ||
140 | if (!EISA_bus) { | |
141 | #if ES_DEBUG & ES_D_PROBE | |
142 | printk("es3210.c: Not EISA bus. Not probing high ports.\n"); | |
143 | #endif | |
144 | return -ENXIO; | |
145 | } | |
146 | ||
147 | /* EISA spec allows for up to 16 slots, but 8 is typical. */ | |
148 | for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) { | |
149 | if (es_probe1(dev, ioaddr) == 0) | |
150 | return 0; | |
151 | dev->irq = irq; | |
152 | dev->mem_start = mem_start; | |
153 | } | |
154 | ||
155 | return -ENODEV; | |
156 | } | |
157 | ||
158 | static void cleanup_card(struct net_device *dev) | |
159 | { | |
160 | free_irq(dev->irq, dev); | |
161 | release_region(dev->base_addr, ES_IO_EXTENT); | |
162 | iounmap(ei_status.mem); | |
163 | } | |
164 | ||
165 | #ifndef MODULE | |
166 | struct net_device * __init es_probe(int unit) | |
167 | { | |
168 | struct net_device *dev = alloc_ei_netdev(); | |
169 | int err; | |
170 | ||
171 | if (!dev) | |
172 | return ERR_PTR(-ENOMEM); | |
173 | ||
174 | sprintf(dev->name, "eth%d", unit); | |
175 | netdev_boot_setup_check(dev); | |
176 | ||
177 | err = do_es_probe(dev); | |
178 | if (err) | |
179 | goto out; | |
180 | err = register_netdev(dev); | |
181 | if (err) | |
182 | goto out1; | |
183 | return dev; | |
184 | out1: | |
185 | cleanup_card(dev); | |
186 | out: | |
187 | free_netdev(dev); | |
188 | return ERR_PTR(err); | |
189 | } | |
190 | #endif | |
191 | ||
192 | static int __init es_probe1(struct net_device *dev, int ioaddr) | |
193 | { | |
194 | int i, retval; | |
195 | unsigned long eisa_id; | |
196 | ||
197 | if (!request_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT, "es3210")) | |
198 | return -ENODEV; | |
199 | ||
200 | #if ES_DEBUG & ES_D_PROBE | |
201 | printk("es3210.c: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + ES_ID_PORT)); | |
202 | printk("es3210.c: config regs: %#x %#x %#x %#x %#x %#x\n", | |
203 | inb(ioaddr + ES_CFG1), inb(ioaddr + ES_CFG2), inb(ioaddr + ES_CFG3), | |
204 | inb(ioaddr + ES_CFG4), inb(ioaddr + ES_CFG5), inb(ioaddr + ES_CFG6)); | |
205 | #endif | |
206 | ||
207 | ||
208 | /* Check the EISA ID of the card. */ | |
209 | eisa_id = inl(ioaddr + ES_ID_PORT); | |
210 | if ((eisa_id != ES_EISA_ID1) && (eisa_id != ES_EISA_ID2)) { | |
211 | retval = -ENODEV; | |
212 | goto out; | |
213 | } | |
214 | ||
215 | /* Check the Racal vendor ID as well. */ | |
216 | if (inb(ioaddr + ES_SA_PROM + 0) != ES_ADDR0 | |
217 | || inb(ioaddr + ES_SA_PROM + 1) != ES_ADDR1 | |
218 | || inb(ioaddr + ES_SA_PROM + 2) != ES_ADDR2 ) { | |
219 | printk("es3210.c: card not found"); | |
220 | for(i = 0; i < ETHER_ADDR_LEN; i++) | |
221 | printk(" %02x", inb(ioaddr + ES_SA_PROM + i)); | |
222 | printk(" (invalid prefix).\n"); | |
223 | retval = -ENODEV; | |
224 | goto out; | |
225 | } | |
226 | ||
227 | printk("es3210.c: ES3210 rev. %ld at %#x, node", eisa_id>>24, ioaddr); | |
228 | for(i = 0; i < ETHER_ADDR_LEN; i++) | |
229 | printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + ES_SA_PROM + i))); | |
230 | ||
231 | /* Snarf the interrupt now. */ | |
232 | if (dev->irq == 0) { | |
233 | unsigned char hi_irq = inb(ioaddr + ES_CFG2) & 0x07; | |
234 | unsigned char lo_irq = inb(ioaddr + ES_CFG1) & 0xfe; | |
235 | ||
236 | if (hi_irq != 0) { | |
237 | dev->irq = hi_irq_map[hi_irq - 1]; | |
238 | } else { | |
239 | int i = 0; | |
240 | while (lo_irq > (1<<i)) i++; | |
241 | dev->irq = lo_irq_map[i]; | |
242 | } | |
243 | printk(" using IRQ %d", dev->irq); | |
244 | #if ES_DEBUG & ES_D_PROBE | |
245 | printk("es3210.c: hi_irq %#x, lo_irq %#x, dev->irq = %d\n", | |
246 | hi_irq, lo_irq, dev->irq); | |
247 | #endif | |
248 | } else { | |
249 | if (dev->irq == 2) | |
250 | dev->irq = 9; /* Doh! */ | |
251 | printk(" assigning IRQ %d", dev->irq); | |
252 | } | |
253 | ||
254 | if (request_irq(dev->irq, ei_interrupt, 0, "es3210", dev)) { | |
255 | printk (" unable to get IRQ %d.\n", dev->irq); | |
256 | retval = -EAGAIN; | |
257 | goto out; | |
258 | } | |
259 | ||
260 | if (dev->mem_start == 0) { | |
261 | unsigned char mem_enabled = inb(ioaddr + ES_CFG2) & 0xc0; | |
262 | unsigned char mem_bits = inb(ioaddr + ES_CFG3) & 0x07; | |
263 | ||
264 | if (mem_enabled != 0x80) { | |
265 | printk(" shared mem disabled - giving up\n"); | |
266 | retval = -ENXIO; | |
267 | goto out1; | |
268 | } | |
269 | dev->mem_start = 0xC0000 + mem_bits*0x4000; | |
270 | printk(" using "); | |
271 | } else { | |
272 | printk(" assigning "); | |
273 | } | |
274 | ||
275 | ei_status.mem = ioremap(dev->mem_start, (ES_STOP_PG - ES_START_PG)*256); | |
276 | if (!ei_status.mem) { | |
277 | printk("ioremap failed - giving up\n"); | |
278 | retval = -ENXIO; | |
279 | goto out1; | |
280 | } | |
281 | ||
282 | dev->mem_end = dev->mem_start + (ES_STOP_PG - ES_START_PG)*256; | |
283 | ||
284 | printk("mem %#lx-%#lx\n", dev->mem_start, dev->mem_end-1); | |
285 | ||
286 | #if ES_DEBUG & ES_D_PROBE | |
287 | if (inb(ioaddr + ES_CFG5)) | |
288 | printk("es3210: Warning - DMA channel enabled, but not used here.\n"); | |
289 | #endif | |
290 | /* Note, point at the 8390, and not the card... */ | |
291 | dev->base_addr = ioaddr + ES_NIC_OFFSET; | |
292 | ||
293 | ei_status.name = "ES3210"; | |
294 | ei_status.tx_start_page = ES_START_PG; | |
295 | ei_status.rx_start_page = ES_START_PG + TX_PAGES; | |
296 | ei_status.stop_page = ES_STOP_PG; | |
297 | ei_status.word16 = 1; | |
298 | ||
299 | if (ei_debug > 0) | |
300 | printk(version); | |
301 | ||
302 | ei_status.reset_8390 = &es_reset_8390; | |
303 | ei_status.block_input = &es_block_input; | |
304 | ei_status.block_output = &es_block_output; | |
305 | ei_status.get_8390_hdr = &es_get_8390_hdr; | |
306 | ||
307 | dev->open = &es_open; | |
308 | dev->stop = &es_close; | |
309 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
310 | dev->poll_controller = ei_poll; | |
311 | #endif | |
312 | NS8390_init(dev, 0); | |
313 | return 0; | |
314 | out1: | |
315 | free_irq(dev->irq, dev); | |
316 | out: | |
317 | release_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT); | |
318 | return retval; | |
319 | } | |
320 | ||
321 | /* | |
322 | * Reset as per the packet driver method. Judging by the EISA cfg | |
323 | * file, this just toggles the "Board Enable" bits (bit 2 and 0). | |
324 | */ | |
325 | ||
326 | static void es_reset_8390(struct net_device *dev) | |
327 | { | |
328 | unsigned short ioaddr = dev->base_addr; | |
329 | unsigned long end; | |
330 | ||
331 | outb(0x04, ioaddr + ES_RESET_PORT); | |
332 | if (ei_debug > 1) printk("%s: resetting the ES3210...", dev->name); | |
333 | ||
334 | end = jiffies + 2*HZ/100; | |
335 | while ((signed)(end - jiffies) > 0) continue; | |
336 | ||
337 | ei_status.txing = 0; | |
338 | outb(0x01, ioaddr + ES_RESET_PORT); | |
339 | if (ei_debug > 1) printk("reset done\n"); | |
340 | ||
341 | return; | |
342 | } | |
343 | ||
344 | /* | |
345 | * Note: In the following three functions is the implicit assumption | |
346 | * that the associated memcpy will only use "rep; movsl" as long as | |
347 | * we keep the counts as some multiple of doublewords. This is a | |
348 | * requirement of the hardware, and also prevents us from using | |
349 | * eth_io_copy_and_sum() since we can't guarantee it will limit | |
350 | * itself to doubleword access. | |
351 | */ | |
352 | ||
353 | /* | |
354 | * Grab the 8390 specific header. Similar to the block_input routine, but | |
355 | * we don't need to be concerned with ring wrap as the header will be at | |
356 | * the start of a page, so we optimize accordingly. (A single doubleword.) | |
357 | */ | |
358 | ||
359 | static void | |
360 | es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) | |
361 | { | |
362 | void __iomem *hdr_start = ei_status.mem + ((ring_page - ES_START_PG)<<8); | |
363 | memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr)); | |
364 | hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */ | |
365 | } | |
366 | ||
367 | /* | |
368 | * Block input and output are easy on shared memory ethercards, the only | |
369 | * complication is when the ring buffer wraps. The count will already | |
370 | * be rounded up to a doubleword value via es_get_8390_hdr() above. | |
371 | */ | |
372 | ||
373 | static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb, | |
374 | int ring_offset) | |
375 | { | |
376 | void __iomem *xfer_start = ei_status.mem + ring_offset - ES_START_PG*256; | |
377 | ||
378 | if (ring_offset + count > ES_STOP_PG*256) { | |
379 | /* Packet wraps over end of ring buffer. */ | |
380 | int semi_count = ES_STOP_PG*256 - ring_offset; | |
381 | memcpy_fromio(skb->data, xfer_start, semi_count); | |
382 | count -= semi_count; | |
383 | memcpy_fromio(skb->data + semi_count, ei_status.mem, count); | |
384 | } else { | |
385 | /* Packet is in one chunk. */ | |
386 | eth_io_copy_and_sum(skb, xfer_start, count, 0); | |
387 | } | |
388 | } | |
389 | ||
390 | static void es_block_output(struct net_device *dev, int count, | |
391 | const unsigned char *buf, int start_page) | |
392 | { | |
393 | void __iomem *shmem = ei_status.mem + ((start_page - ES_START_PG)<<8); | |
394 | ||
395 | count = (count + 3) & ~3; /* Round up to doubleword */ | |
396 | memcpy_toio(shmem, buf, count); | |
397 | } | |
398 | ||
399 | static int es_open(struct net_device *dev) | |
400 | { | |
401 | ei_open(dev); | |
402 | return 0; | |
403 | } | |
404 | ||
405 | static int es_close(struct net_device *dev) | |
406 | { | |
407 | ||
408 | if (ei_debug > 1) | |
409 | printk("%s: Shutting down ethercard.\n", dev->name); | |
410 | ||
411 | ei_close(dev); | |
412 | return 0; | |
413 | } | |
414 | ||
415 | #ifdef MODULE | |
416 | #define MAX_ES_CARDS 4 /* Max number of ES3210 cards per module */ | |
417 | #define NAMELEN 8 /* # of chars for storing dev->name */ | |
418 | static struct net_device *dev_es3210[MAX_ES_CARDS]; | |
419 | static int io[MAX_ES_CARDS]; | |
420 | static int irq[MAX_ES_CARDS]; | |
421 | static int mem[MAX_ES_CARDS]; | |
422 | ||
423 | module_param_array(io, int, NULL, 0); | |
424 | module_param_array(irq, int, NULL, 0); | |
425 | module_param_array(mem, int, NULL, 0); | |
426 | MODULE_PARM_DESC(io, "I/O base address(es)"); | |
427 | MODULE_PARM_DESC(irq, "IRQ number(s)"); | |
428 | MODULE_PARM_DESC(mem, "memory base address(es)"); | |
429 | MODULE_DESCRIPTION("Racal-Interlan ES3210 EISA ethernet driver"); | |
430 | MODULE_LICENSE("GPL"); | |
431 | ||
432 | int | |
433 | init_module(void) | |
434 | { | |
435 | struct net_device *dev; | |
436 | int this_dev, found = 0; | |
437 | ||
438 | for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) { | |
439 | if (io[this_dev] == 0 && this_dev != 0) | |
440 | break; | |
441 | dev = alloc_ei_netdev(); | |
442 | if (!dev) | |
443 | break; | |
444 | dev->irq = irq[this_dev]; | |
445 | dev->base_addr = io[this_dev]; | |
446 | dev->mem_start = mem[this_dev]; | |
447 | if (do_es_probe(dev) == 0) { | |
448 | if (register_netdev(dev) == 0) { | |
449 | dev_es3210[found++] = dev; | |
450 | continue; | |
451 | } | |
452 | cleanup_card(dev); | |
453 | } | |
454 | free_netdev(dev); | |
455 | printk(KERN_WARNING "es3210.c: No es3210 card found (i/o = 0x%x).\n", io[this_dev]); | |
456 | break; | |
457 | } | |
458 | if (found) | |
459 | return 0; | |
460 | return -ENXIO; | |
461 | } | |
462 | ||
463 | void | |
464 | cleanup_module(void) | |
465 | { | |
466 | int this_dev; | |
467 | ||
468 | for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) { | |
469 | struct net_device *dev = dev_es3210[this_dev]; | |
470 | if (dev) { | |
471 | unregister_netdev(dev); | |
472 | cleanup_card(dev); | |
473 | free_netdev(dev); | |
474 | } | |
475 | } | |
476 | } | |
477 | #endif /* MODULE */ | |
478 |