1 /* smc-mca.c: A SMC Ultra ethernet driver for linux. */
2 /*
3 Most of this driver, except for ultramca_probe is nearly
4 verbatim from smc-ultra.c by Donald Becker. The rest is
5 written and copyright 1996 by David Weis, weisd3458@uni.edu
6
7 This is a driver for the SMC Ultra and SMC EtherEZ ethercards.
8
9 This driver uses the cards in the 8390-compatible, shared memory mode.
10 Most of the run-time complexity is handled by the generic code in
11 8390.c.
12
13 This driver enables the shared memory only when doing the actual data
14 transfers to avoid a bug in early version of the card that corrupted
15 data transferred by a AHA1542.
16
17 This driver does not support the programmed-I/O data transfer mode of
18 the EtherEZ. That support (if available) is smc-ez.c. Nor does it
19 use the non-8390-compatible "Altego" mode. (No support currently planned.)
20
21 Changelog:
22
23 Paul Gortmaker : multiple card support for module users.
24 David Weis : Micro Channel-ized it.
25 Tom Sightler : Added support for IBM PS/2 Ethernet Adapter/A
26 Christopher Turcksin : Changed MCA-probe so that multiple adapters are
27 found correctly (Jul 16, 1997)
28 Chris Beauregard : Tried to merge the two changes above (Dec 15, 1997)
29 Tom Sightler : Fixed minor detection bug caused by above merge
30 Tom Sightler : Added support for three more Western Digital
31 MCA-adapters
32 Tom Sightler : Added support for 2.2.x mca_find_unused_adapter
33 Hartmut Schmidt : - Modified parameter detection to handle each
34 card differently depending on a switch-list
35 - 'card_ver' removed from the adapter list
36 - Some minor bug fixes
37 */
38
39 #include <linux/mca.h>
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/errno.h>
43 #include <linux/string.h>
44 #include <linux/init.h>
45 #include <linux/netdevice.h>
46 #include <linux/etherdevice.h>
47
48 #include <asm/io.h>
49 #include <asm/system.h>
50
51 #include "8390.h"
52
53 #define DRV_NAME "smc-mca"
54
55 static int ultramca_open(struct net_device *dev);
56 static void ultramca_reset_8390(struct net_device *dev);
57 static void ultramca_get_8390_hdr(struct net_device *dev,
58 struct e8390_pkt_hdr *hdr,
59 int ring_page);
60 static void ultramca_block_input(struct net_device *dev, int count,
61 struct sk_buff *skb,
62 int ring_offset);
63 static void ultramca_block_output(struct net_device *dev, int count,
64 const unsigned char *buf,
65 const int start_page);
66 static int ultramca_close_card(struct net_device *dev);
67
68 #define START_PG 0x00 /* First page of TX buffer */
69
70 #define ULTRA_CMDREG 0 /* Offset to ASIC command register. */
71 #define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */
72 #define ULTRA_MEMENB 0x40 /* Enable the shared memory. */
73 #define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
74 #define ULTRA_IO_EXTENT 32
75 #define EN0_ERWCNT 0x08 /* Early receive warning count. */
76
77 #define _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A 0
78 #define _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A 1
79 #define _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A 2
80 #define _6fc1_WD_Starcard_PLUS_A_WD8003ST_A 3
81 #define _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A 4
82 #define _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A 5
83 #define _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A 6
84 #define _efe5_IBM_PS2_Adapter_A_for_Ethernet 7
85
86 struct smc_mca_adapters_t {
87 unsigned int id;
88 char *name;
89 };
90
91 #define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */
92
93 static int ultra_io[MAX_ULTRAMCA_CARDS];
94 static int ultra_irq[MAX_ULTRAMCA_CARDS];
95 MODULE_LICENSE("GPL");
96
97 module_param_array(ultra_io, int, NULL, 0);
98 module_param_array(ultra_irq, int, NULL, 0);
99 MODULE_PARM_DESC(ultra_io, "SMC Ultra/EtherEZ MCA I/O base address(es)");
100 MODULE_PARM_DESC(ultra_irq, "SMC Ultra/EtherEZ MCA IRQ number(s)");
101
102 static const struct {
103 unsigned int base_addr;
104 } addr_table[] = {
105 { 0x0800 },
106 { 0x1800 },
107 { 0x2800 },
108 { 0x3800 },
109 { 0x4800 },
110 { 0x5800 },
111 { 0x6800 },
112 { 0x7800 },
113 { 0x8800 },
114 { 0x9800 },
115 { 0xa800 },
116 { 0xb800 },
117 { 0xc800 },
118 { 0xd800 },
119 { 0xe800 },
120 { 0xf800 }
121 };
122
123 #define MEM_MASK 64
124
125 static const struct {
126 unsigned char mem_index;
127 unsigned long mem_start;
128 unsigned char num_pages;
129 } mem_table[] = {
130 { 16, 0x0c0000, 40 },
131 { 18, 0x0c4000, 40 },
132 { 20, 0x0c8000, 40 },
133 { 22, 0x0cc000, 40 },
134 { 24, 0x0d0000, 40 },
135 { 26, 0x0d4000, 40 },
136 { 28, 0x0d8000, 40 },
137 { 30, 0x0dc000, 40 },
138 {144, 0xfc0000, 40 },
139 {148, 0xfc8000, 40 },
140 {154, 0xfd0000, 40 },
141 {156, 0xfd8000, 40 },
142 { 0, 0x0c0000, 20 },
143 { 1, 0x0c2000, 20 },
144 { 2, 0x0c4000, 20 },
145 { 3, 0x0c6000, 20 }
146 };
147
148 #define IRQ_MASK 243
149 static const struct {
150 unsigned char new_irq;
151 unsigned char old_irq;
152 } irq_table[] = {
153 { 3, 3 },
154 { 4, 4 },
155 { 10, 10 },
156 { 14, 15 }
157 };
158
159 static short smc_mca_adapter_ids[] __initdata = {
160 0x61c8,
161 0x61c9,
162 0x6fc0,
163 0x6fc1,
164 0x6fc2,
165 0xefd4,
166 0xefd5,
167 0xefe5,
168 0x0000
169 };
170
171 static char *smc_mca_adapter_names[] __initdata = {
172 "SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)",
173 "SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)",
174 "WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)",
175 "WD Starcard PLUS/A (WD8003ST/A)",
176 "WD Ethercard PLUS 10T/A (WD8003W/A)",
177 "IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)",
178 "IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)",
179 "IBM PS/2 Adapter/A for Ethernet",
180 NULL
181 };
182
183 static int ultra_found = 0;
184
185
186 static const struct net_device_ops ultramca_netdev_ops = {
187 .ndo_open = ultramca_open,
188 .ndo_stop = ultramca_close_card,
189
190 .ndo_start_xmit = ei_start_xmit,
191 .ndo_tx_timeout = ei_tx_timeout,
192 .ndo_get_stats = ei_get_stats,
193 .ndo_set_multicast_list = ei_set_multicast_list,
194 .ndo_validate_addr = eth_validate_addr,
195 .ndo_set_mac_address = eth_mac_addr,
196 .ndo_change_mtu = eth_change_mtu,
197 #ifdef CONFIG_NET_POLL_CONTROLLER
198 .ndo_poll_controller = ei_poll,
199 #endif
200 };
201
ultramca_probe(struct device * gen_dev)202 static int __init ultramca_probe(struct device *gen_dev)
203 {
204 unsigned short ioaddr;
205 struct net_device *dev;
206 unsigned char reg4, num_pages;
207 struct mca_device *mca_dev = to_mca_device(gen_dev);
208 char slot = mca_dev->slot;
209 unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff;
210 int i, rc;
211 int adapter = mca_dev->index;
212 int tbase = 0;
213 int tirq = 0;
214 int base_addr = ultra_io[ultra_found];
215 int irq = ultra_irq[ultra_found];
216
217 if (base_addr || irq) {
218 printk(KERN_INFO "Probing for SMC MCA adapter");
219 if (base_addr) {
220 printk(KERN_INFO " at I/O address 0x%04x%c",
221 base_addr, irq ? ' ' : '\n');
222 }
223 if (irq) {
224 printk(KERN_INFO "using irq %d\n", irq);
225 }
226 }
227
228 tirq = 0;
229 tbase = 0;
230
231 /* If we're trying to match a specificied irq or io address,
232 * we'll reject the adapter found unless it's the one we're
233 * looking for */
234
235 pos2 = mca_device_read_stored_pos(mca_dev, 2); /* io_addr */
236 pos3 = mca_device_read_stored_pos(mca_dev, 3); /* shared mem */
237 pos4 = mca_device_read_stored_pos(mca_dev, 4); /* ROM bios addr range */
238 pos5 = mca_device_read_stored_pos(mca_dev, 5); /* irq, media and RIPL */
239
240 /* Test the following conditions:
241 * - If an irq parameter is supplied, compare it
242 * with the irq of the adapter we found
243 * - If a base_addr paramater is given, compare it
244 * with the base_addr of the adapter we found
245 * - Check that the irq and the base_addr of the
246 * adapter we found is not already in use by
247 * this driver
248 */
249
250 switch (mca_dev->index) {
251 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
252 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
253 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
254 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
255 {
256 tbase = addr_table[(pos2 & 0xf0) >> 4].base_addr;
257 tirq = irq_table[(pos5 & 0xc) >> 2].new_irq;
258 break;
259 }
260 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
261 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
262 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
263 case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
264 {
265 tbase = ((pos2 & 0x0fe) * 0x10);
266 tirq = irq_table[(pos5 & 3)].old_irq;
267 break;
268 }
269 }
270
271 if(!tirq || !tbase
272 || (irq && irq != tirq)
273 || (base_addr && tbase != base_addr))
274 /* FIXME: we're trying to force the ordering of the
275 * devices here, there should be a way of getting this
276 * to happen */
277 return -ENXIO;
278
279 /* Adapter found. */
280 dev = alloc_ei_netdev();
281 if(!dev)
282 return -ENODEV;
283
284 SET_NETDEV_DEV(dev, gen_dev);
285 mca_device_set_name(mca_dev, smc_mca_adapter_names[adapter]);
286 mca_device_set_claim(mca_dev, 1);
287
288 printk(KERN_INFO "smc_mca: %s found in slot %d\n",
289 smc_mca_adapter_names[adapter], slot + 1);
290
291 ultra_found++;
292
293 dev->base_addr = ioaddr = mca_device_transform_ioport(mca_dev, tbase);
294 dev->irq = mca_device_transform_irq(mca_dev, tirq);
295 dev->mem_start = 0;
296 num_pages = 40;
297
298 switch (adapter) { /* card-# in const array above [hs] */
299 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
300 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
301 {
302 for (i = 0; i < 16; i++) { /* taking 16 counts
303 * up to 15 [hs] */
304 if (mem_table[i].mem_index == (pos3 & ~MEM_MASK)) {
305 dev->mem_start = (unsigned long)
306 mca_device_transform_memory(mca_dev, (void *)mem_table[i].mem_start);
307 num_pages = mem_table[i].num_pages;
308 }
309 }
310 break;
311 }
312 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
313 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
314 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
315 case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
316 {
317 dev->mem_start = (unsigned long)
318 mca_device_transform_memory(mca_dev, (void *)((pos3 & 0xfc) * 0x1000));
319 num_pages = 0x40;
320 break;
321 }
322 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
323 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
324 {
325 /* courtesy of gamera@quartz.ocn.ne.jp, pos3 indicates
326 * the index of the 0x2000 step.
327 * beware different number of pages [hs]
328 */
329 dev->mem_start = (unsigned long)
330 mca_device_transform_memory(mca_dev, (void *)(0xc0000 + (0x2000 * (pos3 & 0xf))));
331 num_pages = 0x20 + (2 * (pos3 & 0x10));
332 break;
333 }
334 }
335
336 /* sanity check, shouldn't happen */
337 if (dev->mem_start == 0) {
338 rc = -ENODEV;
339 goto err_unclaim;
340 }
341
342 if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) {
343 rc = -ENODEV;
344 goto err_unclaim;
345 }
346
347 reg4 = inb(ioaddr + 4) & 0x7f;
348 outb(reg4, ioaddr + 4);
349
350 for (i = 0; i < 6; i++)
351 dev->dev_addr[i] = inb(ioaddr + 8 + i);
352
353 printk(KERN_INFO "smc_mca[%d]: Parameters: %#3x, %pM",
354 slot + 1, ioaddr, dev->dev_addr);
355
356 /* Switch from the station address to the alternate register set
357 * and read the useful registers there.
358 */
359
360 outb(0x80 | reg4, ioaddr + 4);
361
362 /* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot.
363 */
364
365 outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
366
367 /* Switch back to the station address register set so that
368 * the MS-DOS driver can find the card after a warm boot.
369 */
370
371 outb(reg4, ioaddr + 4);
372
373 gen_dev->driver_data = dev;
374
375 /* The 8390 isn't at the base address, so fake the offset
376 */
377
378 dev->base_addr = ioaddr + ULTRA_NIC_OFFSET;
379
380 ei_status.name = "SMC Ultra MCA";
381 ei_status.word16 = 1;
382 ei_status.tx_start_page = START_PG;
383 ei_status.rx_start_page = START_PG + TX_PAGES;
384 ei_status.stop_page = num_pages;
385
386 ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG) * 256);
387 if (!ei_status.mem) {
388 rc = -ENOMEM;
389 goto err_release_region;
390 }
391
392 dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG) * 256;
393
394 printk(", IRQ %d memory %#lx-%#lx.\n",
395 dev->irq, dev->mem_start, dev->mem_end - 1);
396
397 ei_status.reset_8390 = &ultramca_reset_8390;
398 ei_status.block_input = &ultramca_block_input;
399 ei_status.block_output = &ultramca_block_output;
400 ei_status.get_8390_hdr = &ultramca_get_8390_hdr;
401
402 ei_status.priv = slot;
403
404 dev->netdev_ops = &ultramca_netdev_ops;
405
406 NS8390_init(dev, 0);
407
408 rc = register_netdev(dev);
409 if (rc)
410 goto err_unmap;
411
412 return 0;
413
414 err_unmap:
415 iounmap(ei_status.mem);
416 err_release_region:
417 release_region(ioaddr, ULTRA_IO_EXTENT);
418 err_unclaim:
419 mca_device_set_claim(mca_dev, 0);
420 free_netdev(dev);
421 return rc;
422 }
423
ultramca_open(struct net_device * dev)424 static int ultramca_open(struct net_device *dev)
425 {
426 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
427 int retval;
428
429 if ((retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev)))
430 return retval;
431
432 outb(ULTRA_MEMENB, ioaddr); /* Enable memory */
433 outb(0x80, ioaddr + 5); /* ??? */
434 outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
435 outb(0x04, ioaddr + 5); /* ??? */
436
437 /* Set the early receive warning level in window 0 high enough not
438 * to receive ERW interrupts.
439 */
440
441 /* outb_p(E8390_NODMA + E8390_PAGE0, dev->base_addr);
442 * outb(0xff, dev->base_addr + EN0_ERWCNT);
443 */
444
445 ei_open(dev);
446 return 0;
447 }
448
ultramca_reset_8390(struct net_device * dev)449 static void ultramca_reset_8390(struct net_device *dev)
450 {
451 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
452
453 outb(ULTRA_RESET, ioaddr);
454 if (ei_debug > 1)
455 printk("resetting Ultra, t=%ld...", jiffies);
456 ei_status.txing = 0;
457
458 outb(0x80, ioaddr + 5); /* ??? */
459 outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
460
461 if (ei_debug > 1)
462 printk("reset done\n");
463 return;
464 }
465
466 /* Grab the 8390 specific header. Similar to the block_input routine, but
467 * we don't need to be concerned with ring wrap as the header will be at
468 * the start of a page, so we optimize accordingly.
469 */
470
ultramca_get_8390_hdr(struct net_device * dev,struct e8390_pkt_hdr * hdr,int ring_page)471 static void ultramca_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
472 {
473 void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG) << 8);
474
475 #ifdef notdef
476 /* Officially this is what we are doing, but the readl() is faster */
477 memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
478 #else
479 ((unsigned int*)hdr)[0] = readl(hdr_start);
480 #endif
481 }
482
483 /* Block input and output are easy on shared memory ethercards, the only
484 * complication is when the ring buffer wraps.
485 */
486
ultramca_block_input(struct net_device * dev,int count,struct sk_buff * skb,int ring_offset)487 static void ultramca_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
488 {
489 void __iomem *xfer_start = ei_status.mem + ring_offset - START_PG * 256;
490
491 if (ring_offset + count > ei_status.stop_page * 256) {
492 /* We must wrap the input move. */
493 int semi_count = ei_status.stop_page * 256 - ring_offset;
494 memcpy_fromio(skb->data, xfer_start, semi_count);
495 count -= semi_count;
496 memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
497 } else {
498 memcpy_fromio(skb->data, xfer_start, count);
499 }
500
501 }
502
ultramca_block_output(struct net_device * dev,int count,const unsigned char * buf,int start_page)503 static void ultramca_block_output(struct net_device *dev, int count, const unsigned char *buf,
504 int start_page)
505 {
506 void __iomem *shmem = ei_status.mem + ((start_page - START_PG) << 8);
507
508 memcpy_toio(shmem, buf, count);
509 }
510
ultramca_close_card(struct net_device * dev)511 static int ultramca_close_card(struct net_device *dev)
512 {
513 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
514
515 netif_stop_queue(dev);
516
517 if (ei_debug > 1)
518 printk("%s: Shutting down ethercard.\n", dev->name);
519
520 outb(0x00, ioaddr + 6); /* Disable interrupts. */
521 free_irq(dev->irq, dev);
522
523 NS8390_init(dev, 0);
524 /* We should someday disable shared memory and change to 8-bit mode
525 * "just in case"...
526 */
527
528 return 0;
529 }
530
ultramca_remove(struct device * gen_dev)531 static int ultramca_remove(struct device *gen_dev)
532 {
533 struct mca_device *mca_dev = to_mca_device(gen_dev);
534 struct net_device *dev = (struct net_device *)gen_dev->driver_data;
535
536 if (dev) {
537 /* NB: ultra_close_card() does free_irq */
538 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET;
539
540 unregister_netdev(dev);
541 mca_device_set_claim(mca_dev, 0);
542 release_region(ioaddr, ULTRA_IO_EXTENT);
543 iounmap(ei_status.mem);
544 free_netdev(dev);
545 }
546 return 0;
547 }
548
549
550 static struct mca_driver ultra_driver = {
551 .id_table = smc_mca_adapter_ids,
552 .driver = {
553 .name = "smc-mca",
554 .bus = &mca_bus_type,
555 .probe = ultramca_probe,
556 .remove = ultramca_remove,
557 }
558 };
559
ultramca_init_module(void)560 static int __init ultramca_init_module(void)
561 {
562 if(!MCA_bus)
563 return -ENXIO;
564
565 mca_register_driver(&ultra_driver);
566
567 return ultra_found ? 0 : -ENXIO;
568 }
569
ultramca_cleanup_module(void)570 static void __exit ultramca_cleanup_module(void)
571 {
572 mca_unregister_driver(&ultra_driver);
573 }
574 module_init(ultramca_init_module);
575 module_exit(ultramca_cleanup_module);
576
577