1 /* smc-mca.c: A SMC Ultra ethernet driver for linux. */
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
7 This is a driver for the SMC Ultra and SMC EtherEZ ethercards.
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
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.
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.)
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
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
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>
49 #include <asm/system.h>
53 #define DRV_NAME "smc-mca"
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,
60 static void ultramca_block_input(struct net_device *dev, int count,
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);
68 #define START_PG 0x00 /* First page of TX buffer */
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. */
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
86 struct smc_mca_adapters_t {
91 #define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */
93 static int ultra_io[MAX_ULTRAMCA_CARDS];
94 static int ultra_irq[MAX_ULTRAMCA_CARDS];
95 MODULE_LICENSE("GPL");
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)");
102 static const struct {
103 unsigned int base_addr;
125 static const struct {
126 unsigned char mem_index;
127 unsigned long mem_start;
128 unsigned char num_pages;
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 },
149 static const struct {
150 unsigned char new_irq;
151 unsigned char old_irq;
159 static short smc_mca_adapter_ids[] __initdata = {
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",
183 static int ultra_found = 0;
186 static const struct net_device_ops ultramca_netdev_ops = {
187 .ndo_open = ultramca_open,
188 .ndo_stop = ultramca_close_card,
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_change_mtu = eth_change_mtu,
196 #ifdef CONFIG_NET_POLL_CONTROLLER
197 .ndo_poll_controller = ei_poll,
201 static int __init ultramca_probe(struct device *gen_dev)
203 unsigned short ioaddr;
204 struct net_device *dev;
205 unsigned char reg4, num_pages;
206 struct mca_device *mca_dev = to_mca_device(gen_dev);
207 char slot = mca_dev->slot;
208 unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff;
210 int adapter = mca_dev->index;
213 int base_addr = ultra_io[ultra_found];
214 int irq = ultra_irq[ultra_found];
216 if (base_addr || irq) {
217 printk(KERN_INFO "Probing for SMC MCA adapter");
219 printk(KERN_INFO " at I/O address 0x%04x%c",
220 base_addr, irq ? ' ' : '\n');
223 printk(KERN_INFO "using irq %d\n", irq);
230 /* If we're trying to match a specificied irq or io address,
231 * we'll reject the adapter found unless it's the one we're
234 pos2 = mca_device_read_stored_pos(mca_dev, 2); /* io_addr */
235 pos3 = mca_device_read_stored_pos(mca_dev, 3); /* shared mem */
236 pos4 = mca_device_read_stored_pos(mca_dev, 4); /* ROM bios addr range */
237 pos5 = mca_device_read_stored_pos(mca_dev, 5); /* irq, media and RIPL */
239 /* Test the following conditions:
240 * - If an irq parameter is supplied, compare it
241 * with the irq of the adapter we found
242 * - If a base_addr paramater is given, compare it
243 * with the base_addr of the adapter we found
244 * - Check that the irq and the base_addr of the
245 * adapter we found is not already in use by
249 switch (mca_dev->index) {
250 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
251 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
252 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
253 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
255 tbase = addr_table[(pos2 & 0xf0) >> 4].base_addr;
256 tirq = irq_table[(pos5 & 0xc) >> 2].new_irq;
259 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
260 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
261 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
262 case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
264 tbase = ((pos2 & 0x0fe) * 0x10);
265 tirq = irq_table[(pos5 & 3)].old_irq;
271 || (irq && irq != tirq)
272 || (base_addr && tbase != base_addr))
273 /* FIXME: we're trying to force the ordering of the
274 * devices here, there should be a way of getting this
279 dev = alloc_ei_netdev();
283 SET_NETDEV_DEV(dev, gen_dev);
284 mca_device_set_name(mca_dev, smc_mca_adapter_names[adapter]);
285 mca_device_set_claim(mca_dev, 1);
287 printk(KERN_INFO "smc_mca: %s found in slot %d\n",
288 smc_mca_adapter_names[adapter], slot + 1);
292 dev->base_addr = ioaddr = mca_device_transform_ioport(mca_dev, tbase);
293 dev->irq = mca_device_transform_irq(mca_dev, tirq);
297 switch (adapter) { /* card-# in const array above [hs] */
298 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
299 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
301 for (i = 0; i < 16; i++) { /* taking 16 counts
303 if (mem_table[i].mem_index == (pos3 & ~MEM_MASK)) {
304 dev->mem_start = (unsigned long)
305 mca_device_transform_memory(mca_dev, (void *)mem_table[i].mem_start);
306 num_pages = mem_table[i].num_pages;
311 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
312 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
313 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
314 case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
316 dev->mem_start = (unsigned long)
317 mca_device_transform_memory(mca_dev, (void *)((pos3 & 0xfc) * 0x1000));
321 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
322 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
324 /* courtesy of gamera@quartz.ocn.ne.jp, pos3 indicates
325 * the index of the 0x2000 step.
326 * beware different number of pages [hs]
328 dev->mem_start = (unsigned long)
329 mca_device_transform_memory(mca_dev, (void *)(0xc0000 + (0x2000 * (pos3 & 0xf))));
330 num_pages = 0x20 + (2 * (pos3 & 0x10));
335 /* sanity check, shouldn't happen */
336 if (dev->mem_start == 0) {
341 if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) {
346 reg4 = inb(ioaddr + 4) & 0x7f;
347 outb(reg4, ioaddr + 4);
349 for (i = 0; i < 6; i++)
350 dev->dev_addr[i] = inb(ioaddr + 8 + i);
352 printk(KERN_INFO "smc_mca[%d]: Parameters: %#3x, %pM",
353 slot + 1, ioaddr, dev->dev_addr);
355 /* Switch from the station address to the alternate register set
356 * and read the useful registers there.
359 outb(0x80 | reg4, ioaddr + 4);
361 /* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot.
364 outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
366 /* Switch back to the station address register set so that
367 * the MS-DOS driver can find the card after a warm boot.
370 outb(reg4, ioaddr + 4);
372 gen_dev->driver_data = dev;
374 /* The 8390 isn't at the base address, so fake the offset
377 dev->base_addr = ioaddr + ULTRA_NIC_OFFSET;
379 ei_status.name = "SMC Ultra MCA";
380 ei_status.word16 = 1;
381 ei_status.tx_start_page = START_PG;
382 ei_status.rx_start_page = START_PG + TX_PAGES;
383 ei_status.stop_page = num_pages;
385 ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG) * 256);
386 if (!ei_status.mem) {
388 goto err_release_region;
391 dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG) * 256;
393 printk(", IRQ %d memory %#lx-%#lx.\n",
394 dev->irq, dev->mem_start, dev->mem_end - 1);
396 ei_status.reset_8390 = &ultramca_reset_8390;
397 ei_status.block_input = &ultramca_block_input;
398 ei_status.block_output = &ultramca_block_output;
399 ei_status.get_8390_hdr = &ultramca_get_8390_hdr;
401 ei_status.priv = slot;
403 dev->netdev_ops = &ultramca_netdev_ops;
407 rc = register_netdev(dev);
414 iounmap(ei_status.mem);
416 release_region(ioaddr, ULTRA_IO_EXTENT);
418 mca_device_set_claim(mca_dev, 0);
423 static int ultramca_open(struct net_device *dev)
425 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
428 if ((retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev)))
431 outb(ULTRA_MEMENB, ioaddr); /* Enable memory */
432 outb(0x80, ioaddr + 5); /* ??? */
433 outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
434 outb(0x04, ioaddr + 5); /* ??? */
436 /* Set the early receive warning level in window 0 high enough not
437 * to receive ERW interrupts.
440 /* outb_p(E8390_NODMA + E8390_PAGE0, dev->base_addr);
441 * outb(0xff, dev->base_addr + EN0_ERWCNT);
448 static void ultramca_reset_8390(struct net_device *dev)
450 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
452 outb(ULTRA_RESET, ioaddr);
454 printk("resetting Ultra, t=%ld...", jiffies);
457 outb(0x80, ioaddr + 5); /* ??? */
458 outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
461 printk("reset done\n");
465 /* Grab the 8390 specific header. Similar to the block_input routine, but
466 * we don't need to be concerned with ring wrap as the header will be at
467 * the start of a page, so we optimize accordingly.
470 static void ultramca_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
472 void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG) << 8);
475 /* Officially this is what we are doing, but the readl() is faster */
476 memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
478 ((unsigned int*)hdr)[0] = readl(hdr_start);
482 /* Block input and output are easy on shared memory ethercards, the only
483 * complication is when the ring buffer wraps.
486 static void ultramca_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
488 void __iomem *xfer_start = ei_status.mem + ring_offset - START_PG * 256;
490 if (ring_offset + count > ei_status.stop_page * 256) {
491 /* We must wrap the input move. */
492 int semi_count = ei_status.stop_page * 256 - ring_offset;
493 memcpy_fromio(skb->data, xfer_start, semi_count);
495 memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
497 memcpy_fromio(skb->data, xfer_start, count);
502 static void ultramca_block_output(struct net_device *dev, int count, const unsigned char *buf,
505 void __iomem *shmem = ei_status.mem + ((start_page - START_PG) << 8);
507 memcpy_toio(shmem, buf, count);
510 static int ultramca_close_card(struct net_device *dev)
512 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
514 netif_stop_queue(dev);
517 printk("%s: Shutting down ethercard.\n", dev->name);
519 outb(0x00, ioaddr + 6); /* Disable interrupts. */
520 free_irq(dev->irq, dev);
523 /* We should someday disable shared memory and change to 8-bit mode
530 static int ultramca_remove(struct device *gen_dev)
532 struct mca_device *mca_dev = to_mca_device(gen_dev);
533 struct net_device *dev = (struct net_device *)gen_dev->driver_data;
536 /* NB: ultra_close_card() does free_irq */
537 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET;
539 unregister_netdev(dev);
540 mca_device_set_claim(mca_dev, 0);
541 release_region(ioaddr, ULTRA_IO_EXTENT);
542 iounmap(ei_status.mem);
549 static struct mca_driver ultra_driver = {
550 .id_table = smc_mca_adapter_ids,
553 .bus = &mca_bus_type,
554 .probe = ultramca_probe,
555 .remove = ultramca_remove,
559 static int __init ultramca_init_module(void)
564 mca_register_driver(&ultra_driver);
566 return ultra_found ? 0 : -ENXIO;
569 static void __exit ultramca_cleanup_module(void)
571 mca_unregister_driver(&ultra_driver);
573 module_init(ultramca_init_module);
574 module_exit(ultramca_cleanup_module);