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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/interrupt.h>
46#include <linux/netdevice.h>
47#include <linux/etherdevice.h>
48
49#include <asm/io.h>
50#include <asm/system.h>
51
52#include "8390.h"
53
54#define DRV_NAME "smc-mca"
55
56static int ultramca_open(struct net_device *dev);
57static void ultramca_reset_8390(struct net_device *dev);
58static void ultramca_get_8390_hdr(struct net_device *dev,
59 struct e8390_pkt_hdr *hdr,
60 int ring_page);
61static void ultramca_block_input(struct net_device *dev, int count,
62 struct sk_buff *skb,
63 int ring_offset);
64static void ultramca_block_output(struct net_device *dev, int count,
65 const unsigned char *buf,
66 const int start_page);
67static int ultramca_close_card(struct net_device *dev);
68
69#define START_PG 0x00 /* First page of TX buffer */
70
71#define ULTRA_CMDREG 0 /* Offset to ASIC command register. */
72#define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */
73#define ULTRA_MEMENB 0x40 /* Enable the shared memory. */
74#define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
75#define ULTRA_IO_EXTENT 32
76#define EN0_ERWCNT 0x08 /* Early receive warning count. */
77
78#define _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A 0
79#define _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A 1
80#define _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A 2
81#define _6fc1_WD_Starcard_PLUS_A_WD8003ST_A 3
82#define _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A 4
83#define _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A 5
84#define _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A 6
85#define _efe5_IBM_PS2_Adapter_A_for_Ethernet 7
86
87struct smc_mca_adapters_t {
88 unsigned int id;
89 char *name;
90};
91
92#define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */
93
94static int ultra_io[MAX_ULTRAMCA_CARDS];
95static int ultra_irq[MAX_ULTRAMCA_CARDS];
96MODULE_LICENSE("GPL");
97
98module_param_array(ultra_io, int, NULL, 0);
99module_param_array(ultra_irq, int, NULL, 0);
100MODULE_PARM_DESC(ultra_io, "SMC Ultra/EtherEZ MCA I/O base address(es)");
101MODULE_PARM_DESC(ultra_irq, "SMC Ultra/EtherEZ MCA IRQ number(s)");
102
103static const struct {
104 unsigned int base_addr;
105} addr_table[] = {
106 { 0x0800 },
107 { 0x1800 },
108 { 0x2800 },
109 { 0x3800 },
110 { 0x4800 },
111 { 0x5800 },
112 { 0x6800 },
113 { 0x7800 },
114 { 0x8800 },
115 { 0x9800 },
116 { 0xa800 },
117 { 0xb800 },
118 { 0xc800 },
119 { 0xd800 },
120 { 0xe800 },
121 { 0xf800 }
122};
123
124#define MEM_MASK 64
125
126static const struct {
127 unsigned char mem_index;
128 unsigned long mem_start;
129 unsigned char num_pages;
130} mem_table[] = {
131 { 16, 0x0c0000, 40 },
132 { 18, 0x0c4000, 40 },
133 { 20, 0x0c8000, 40 },
134 { 22, 0x0cc000, 40 },
135 { 24, 0x0d0000, 40 },
136 { 26, 0x0d4000, 40 },
137 { 28, 0x0d8000, 40 },
138 { 30, 0x0dc000, 40 },
139 {144, 0xfc0000, 40 },
140 {148, 0xfc8000, 40 },
141 {154, 0xfd0000, 40 },
142 {156, 0xfd8000, 40 },
143 { 0, 0x0c0000, 20 },
144 { 1, 0x0c2000, 20 },
145 { 2, 0x0c4000, 20 },
146 { 3, 0x0c6000, 20 }
147};
148
149#define IRQ_MASK 243
150static const struct {
151 unsigned char new_irq;
152 unsigned char old_irq;
153} irq_table[] = {
154 { 3, 3 },
155 { 4, 4 },
156 { 10, 10 },
157 { 14, 15 }
158};
159
160static short smc_mca_adapter_ids[] __initdata = {
161 0x61c8,
162 0x61c9,
163 0x6fc0,
164 0x6fc1,
165 0x6fc2,
166 0xefd4,
167 0xefd5,
168 0xefe5,
169 0x0000
170};
171
172static char *smc_mca_adapter_names[] __initdata = {
173 "SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)",
174 "SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)",
175 "WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)",
176 "WD Starcard PLUS/A (WD8003ST/A)",
177 "WD Ethercard PLUS 10T/A (WD8003W/A)",
178 "IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)",
179 "IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)",
180 "IBM PS/2 Adapter/A for Ethernet",
181 NULL
182};
183
184static int ultra_found = 0;
185
186
187static const struct net_device_ops ultramca_netdev_ops = {
188 .ndo_open = ultramca_open,
189 .ndo_stop = ultramca_close_card,
190
191 .ndo_start_xmit = ei_start_xmit,
192 .ndo_tx_timeout = ei_tx_timeout,
193 .ndo_get_stats = ei_get_stats,
194 .ndo_set_multicast_list = ei_set_multicast_list,
195 .ndo_validate_addr = eth_validate_addr,
196 .ndo_set_mac_address = eth_mac_addr,
197 .ndo_change_mtu = eth_change_mtu,
198#ifdef CONFIG_NET_POLL_CONTROLLER
199 .ndo_poll_controller = ei_poll,
200#endif
201};
202
203static int __init ultramca_probe(struct device *gen_dev)
204{
205 unsigned short ioaddr;
206 struct net_device *dev;
207 unsigned char reg4, num_pages;
208 struct mca_device *mca_dev = to_mca_device(gen_dev);
209 char slot = mca_dev->slot;
210 unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff;
211 int i, rc;
212 int adapter = mca_dev->index;
213 int tbase = 0;
214 int tirq = 0;
215 int base_addr = ultra_io[ultra_found];
216 int irq = ultra_irq[ultra_found];
217
218 if (base_addr || irq) {
219 printk(KERN_INFO "Probing for SMC MCA adapter");
220 if (base_addr) {
221 printk(KERN_INFO " at I/O address 0x%04x%c",
222 base_addr, irq ? ' ' : '\n');
223 }
224 if (irq) {
225 printk(KERN_INFO "using irq %d\n", irq);
226 }
227 }
228
229 tirq = 0;
230 tbase = 0;
231
232 /* If we're trying to match a specificied irq or io address,
233 * we'll reject the adapter found unless it's the one we're
234 * looking for */
235
236 pos2 = mca_device_read_stored_pos(mca_dev, 2); /* io_addr */
237 pos3 = mca_device_read_stored_pos(mca_dev, 3); /* shared mem */
238 pos4 = mca_device_read_stored_pos(mca_dev, 4); /* ROM bios addr range */
239 pos5 = mca_device_read_stored_pos(mca_dev, 5); /* irq, media and RIPL */
240
241 /* Test the following conditions:
242 * - If an irq parameter is supplied, compare it
243 * with the irq of the adapter we found
244 * - If a base_addr paramater is given, compare it
245 * with the base_addr of the adapter we found
246 * - Check that the irq and the base_addr of the
247 * adapter we found is not already in use by
248 * this driver
249 */
250
251 switch (mca_dev->index) {
252 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
253 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
254 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
255 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
256 {
257 tbase = addr_table[(pos2 & 0xf0) >> 4].base_addr;
258 tirq = irq_table[(pos5 & 0xc) >> 2].new_irq;
259 break;
260 }
261 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
262 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
263 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
264 case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
265 {
266 tbase = ((pos2 & 0x0fe) * 0x10);
267 tirq = irq_table[(pos5 & 3)].old_irq;
268 break;
269 }
270 }
271
272 if(!tirq || !tbase ||
273 (irq && irq != tirq) ||
274 (base_addr && tbase != base_addr))
275 /* FIXME: we're trying to force the ordering of the
276 * devices here, there should be a way of getting this
277 * to happen */
278 return -ENXIO;
279
280 /* Adapter found. */
281 dev = alloc_ei_netdev();
282 if(!dev)
283 return -ENODEV;
284
285 SET_NETDEV_DEV(dev, gen_dev);
286 mca_device_set_name(mca_dev, smc_mca_adapter_names[adapter]);
287 mca_device_set_claim(mca_dev, 1);
288
289 printk(KERN_INFO "smc_mca: %s found in slot %d\n",
290 smc_mca_adapter_names[adapter], slot + 1);
291
292 ultra_found++;
293
294 dev->base_addr = ioaddr = mca_device_transform_ioport(mca_dev, tbase);
295 dev->irq = mca_device_transform_irq(mca_dev, tirq);
296 dev->mem_start = 0;
297 num_pages = 40;
298
299 switch (adapter) { /* card-# in const array above [hs] */
300 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
301 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
302 {
303 for (i = 0; i < 16; i++) { /* taking 16 counts
304 * up to 15 [hs] */
305 if (mem_table[i].mem_index == (pos3 & ~MEM_MASK)) {
306 dev->mem_start = (unsigned long)
307 mca_device_transform_memory(mca_dev, (void *)mem_table[i].mem_start);
308 num_pages = mem_table[i].num_pages;
309 }
310 }
311 break;
312 }
313 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
314 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
315 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
316 case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
317 {
318 dev->mem_start = (unsigned long)
319 mca_device_transform_memory(mca_dev, (void *)((pos3 & 0xfc) * 0x1000));
320 num_pages = 0x40;
321 break;
322 }
323 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
324 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
325 {
326 /* courtesy of gamera@quartz.ocn.ne.jp, pos3 indicates
327 * the index of the 0x2000 step.
328 * beware different number of pages [hs]
329 */
330 dev->mem_start = (unsigned long)
331 mca_device_transform_memory(mca_dev, (void *)(0xc0000 + (0x2000 * (pos3 & 0xf))));
332 num_pages = 0x20 + (2 * (pos3 & 0x10));
333 break;
334 }
335 }
336
337 /* sanity check, shouldn't happen */
338 if (dev->mem_start == 0) {
339 rc = -ENODEV;
340 goto err_unclaim;
341 }
342
343 if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) {
344 rc = -ENODEV;
345 goto err_unclaim;
346 }
347
348 reg4 = inb(ioaddr + 4) & 0x7f;
349 outb(reg4, ioaddr + 4);
350
351 for (i = 0; i < 6; i++)
352 dev->dev_addr[i] = inb(ioaddr + 8 + i);
353
354 printk(KERN_INFO "smc_mca[%d]: Parameters: %#3x, %pM",
355 slot + 1, ioaddr, dev->dev_addr);
356
357 /* Switch from the station address to the alternate register set
358 * and read the useful registers there.
359 */
360
361 outb(0x80 | reg4, ioaddr + 4);
362
363 /* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot.
364 */
365
366 outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
367
368 /* Switch back to the station address register set so that
369 * the MS-DOS driver can find the card after a warm boot.
370 */
371
372 outb(reg4, ioaddr + 4);
373
374 dev_set_drvdata(gen_dev, dev);
375
376 /* The 8390 isn't at the base address, so fake the offset
377 */
378
379 dev->base_addr = ioaddr + ULTRA_NIC_OFFSET;
380
381 ei_status.name = "SMC Ultra MCA";
382 ei_status.word16 = 1;
383 ei_status.tx_start_page = START_PG;
384 ei_status.rx_start_page = START_PG + TX_PAGES;
385 ei_status.stop_page = num_pages;
386
387 ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG) * 256);
388 if (!ei_status.mem) {
389 rc = -ENOMEM;
390 goto err_release_region;
391 }
392
393 dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG) * 256;
394
395 printk(", IRQ %d memory %#lx-%#lx.\n",
396 dev->irq, dev->mem_start, dev->mem_end - 1);
397
398 ei_status.reset_8390 = &ultramca_reset_8390;
399 ei_status.block_input = &ultramca_block_input;
400 ei_status.block_output = &ultramca_block_output;
401 ei_status.get_8390_hdr = &ultramca_get_8390_hdr;
402
403 ei_status.priv = slot;
404
405 dev->netdev_ops = &ultramca_netdev_ops;
406
407 NS8390_init(dev, 0);
408
409 rc = register_netdev(dev);
410 if (rc)
411 goto err_unmap;
412
413 return 0;
414
415err_unmap:
416 iounmap(ei_status.mem);
417err_release_region:
418 release_region(ioaddr, ULTRA_IO_EXTENT);
419err_unclaim:
420 mca_device_set_claim(mca_dev, 0);
421 free_netdev(dev);
422 return rc;
423}
424
425static int ultramca_open(struct net_device *dev)
426{
427 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
428 int retval;
429
430 if ((retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev)))
431 return retval;
432
433 outb(ULTRA_MEMENB, ioaddr); /* Enable memory */
434 outb(0x80, ioaddr + 5); /* ??? */
435 outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
436 outb(0x04, ioaddr + 5); /* ??? */
437
438 /* Set the early receive warning level in window 0 high enough not
439 * to receive ERW interrupts.
440 */
441
442 /* outb_p(E8390_NODMA + E8390_PAGE0, dev->base_addr);
443 * outb(0xff, dev->base_addr + EN0_ERWCNT);
444 */
445
446 ei_open(dev);
447 return 0;
448}
449
450static void ultramca_reset_8390(struct net_device *dev)
451{
452 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
453
454 outb(ULTRA_RESET, ioaddr);
455 if (ei_debug > 1)
456 printk("resetting Ultra, t=%ld...", jiffies);
457 ei_status.txing = 0;
458
459 outb(0x80, ioaddr + 5); /* ??? */
460 outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
461
462 if (ei_debug > 1)
463 printk("reset done\n");
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
471static 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
487static 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
503static 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
511static 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
531static int ultramca_remove(struct device *gen_dev)
532{
533 struct mca_device *mca_dev = to_mca_device(gen_dev);
534 struct net_device *dev = dev_get_drvdata(gen_dev);
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
550static 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
560static 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
570static void __exit ultramca_cleanup_module(void)
571{
572 mca_unregister_driver(&ultra_driver);
573}
574module_init(ultramca_init_module);
575module_exit(ultramca_cleanup_module);
576