1 | // SPDX-License-Identifier: GPL-1.0+ |
2 | /* smc-ultra.c: A SMC Ultra ethernet driver for linux. */ |
3 | /* |
4 | This is a driver for the SMC Ultra and SMC EtherEZ ISA ethercards. |
5 | |
6 | Written 1993-1998 by Donald Becker. |
7 | |
8 | Copyright 1993 United States Government as represented by the |
9 | Director, National Security Agency. |
10 | |
11 | The author may be reached as becker@scyld.com, or C/O |
12 | Scyld Computing Corporation |
13 | 410 Severn Ave., Suite 210 |
14 | Annapolis MD 21403 |
15 | |
16 | This driver uses the cards in the 8390-compatible mode. |
17 | Most of the run-time complexity is handled by the generic code in |
18 | 8390.c. The code in this file is responsible for |
19 | |
20 | ultra_probe() Detecting and initializing the card. |
21 | ultra_probe1() |
22 | ultra_probe_isapnp() |
23 | |
24 | ultra_open() The card-specific details of starting, stopping |
25 | ultra_reset_8390() and resetting the 8390 NIC core. |
26 | ultra_close() |
27 | |
28 | ultra_block_input() Routines for reading and writing blocks of |
29 | ultra_block_output() packet buffer memory. |
30 | ultra_pio_input() |
31 | ultra_pio_output() |
32 | |
33 | This driver enables the shared memory only when doing the actual data |
34 | transfers to avoid a bug in early version of the card that corrupted |
35 | data transferred by a AHA1542. |
36 | |
37 | This driver now supports the programmed-I/O (PIO) data transfer mode of |
38 | the EtherEZ. It does not use the non-8390-compatible "Altego" mode. |
39 | That support (if available) is in smc-ez.c. |
40 | |
41 | Changelog: |
42 | |
43 | Paul Gortmaker : multiple card support for module users. |
44 | Donald Becker : 4/17/96 PIO support, minor potential problems avoided. |
45 | Donald Becker : 6/6/96 correctly set auto-wrap bit. |
46 | Alexander Sotirov : 1/20/01 Added support for ISAPnP cards |
47 | |
48 | Note about the ISA PnP support: |
49 | |
50 | This driver can not autoprobe for more than one SMC EtherEZ PnP card. |
51 | You have to configure the second card manually through the /proc/isapnp |
52 | interface and then load the module with an explicit io=0x___ option. |
53 | */ |
54 | |
55 | static const char version[] = |
56 | "smc-ultra.c:v2.02 2/3/98 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n" ; |
57 | |
58 | #include <linux/module.h> |
59 | #include <linux/kernel.h> |
60 | #include <linux/errno.h> |
61 | #include <linux/string.h> |
62 | #include <linux/init.h> |
63 | #include <linux/interrupt.h> |
64 | #include <linux/isapnp.h> |
65 | #include <linux/netdevice.h> |
66 | #include <linux/etherdevice.h> |
67 | #include <net/Space.h> |
68 | |
69 | #include <asm/io.h> |
70 | #include <asm/irq.h> |
71 | |
72 | #include "8390.h" |
73 | |
74 | #define DRV_NAME "smc-ultra" |
75 | |
76 | /* A zero-terminated list of I/O addresses to be probed. */ |
77 | static unsigned int ultra_portlist[] __initdata = |
78 | {0x200, 0x220, 0x240, 0x280, 0x300, 0x340, 0x380, 0}; |
79 | |
80 | static int ultra_probe1(struct net_device *dev, int ioaddr); |
81 | |
82 | #ifdef __ISAPNP__ |
83 | static int ultra_probe_isapnp(struct net_device *dev); |
84 | #endif |
85 | |
86 | static int ultra_open(struct net_device *dev); |
87 | static void ultra_reset_8390(struct net_device *dev); |
88 | static void ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
89 | int ring_page); |
90 | static void ultra_block_input(struct net_device *dev, int count, |
91 | struct sk_buff *skb, int ring_offset); |
92 | static void ultra_block_output(struct net_device *dev, int count, |
93 | const unsigned char *buf, const int start_page); |
94 | static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
95 | int ring_page); |
96 | static void ultra_pio_input(struct net_device *dev, int count, |
97 | struct sk_buff *skb, int ring_offset); |
98 | static void ultra_pio_output(struct net_device *dev, int count, |
99 | const unsigned char *buf, const int start_page); |
100 | static int ultra_close_card(struct net_device *dev); |
101 | |
102 | #ifdef __ISAPNP__ |
103 | static struct isapnp_device_id ultra_device_ids[] __initdata = { |
104 | { ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416), |
105 | ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416), |
106 | (long) "SMC EtherEZ (8416)" }, |
107 | { } /* terminate list */ |
108 | }; |
109 | |
110 | MODULE_DEVICE_TABLE(isapnp, ultra_device_ids); |
111 | #endif |
112 | |
113 | static u32 ultra_msg_enable; |
114 | |
115 | #define START_PG 0x00 /* First page of TX buffer */ |
116 | |
117 | #define ULTRA_CMDREG 0 /* Offset to ASIC command register. */ |
118 | #define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */ |
119 | #define ULTRA_MEMENB 0x40 /* Enable the shared memory. */ |
120 | #define IOPD 0x02 /* I/O Pipe Data (16 bits), PIO operation. */ |
121 | #define IOPA 0x07 /* I/O Pipe Address for PIO operation. */ |
122 | #define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */ |
123 | #define ULTRA_IO_EXTENT 32 |
124 | #define EN0_ERWCNT 0x08 /* Early receive warning count. */ |
125 | |
126 | #ifdef CONFIG_NET_POLL_CONTROLLER |
127 | static void ultra_poll(struct net_device *dev) |
128 | { |
129 | disable_irq(irq: dev->irq); |
130 | ei_interrupt(irq: dev->irq, dev_id: dev); |
131 | enable_irq(irq: dev->irq); |
132 | } |
133 | #endif |
134 | /* Probe for the Ultra. This looks like a 8013 with the station |
135 | address PROM at I/O ports <base>+8 to <base>+13, with a checksum |
136 | following. |
137 | */ |
138 | |
139 | static int __init do_ultra_probe(struct net_device *dev) |
140 | { |
141 | int i; |
142 | int base_addr = dev->base_addr; |
143 | int irq = dev->irq; |
144 | |
145 | if (base_addr > 0x1ff) /* Check a single specified location. */ |
146 | return ultra_probe1(dev, ioaddr: base_addr); |
147 | else if (base_addr != 0) /* Don't probe at all. */ |
148 | return -ENXIO; |
149 | |
150 | #ifdef __ISAPNP__ |
151 | /* Look for any installed ISAPnP cards */ |
152 | if (isapnp_present() && (ultra_probe_isapnp(dev) == 0)) |
153 | return 0; |
154 | #endif |
155 | |
156 | for (i = 0; ultra_portlist[i]; i++) { |
157 | dev->irq = irq; |
158 | if (ultra_probe1(dev, ioaddr: ultra_portlist[i]) == 0) |
159 | return 0; |
160 | } |
161 | |
162 | return -ENODEV; |
163 | } |
164 | |
165 | #ifndef MODULE |
166 | struct net_device * __init ultra_probe(int unit) |
167 | { |
168 | struct net_device *dev = alloc_ei_netdev(); |
169 | int err; |
170 | |
171 | if (!dev) |
172 | return ERR_PTR(error: -ENOMEM); |
173 | |
174 | sprintf(buf: dev->name, fmt: "eth%d" , unit); |
175 | netdev_boot_setup_check(dev); |
176 | |
177 | err = do_ultra_probe(dev); |
178 | if (err) |
179 | goto out; |
180 | return dev; |
181 | out: |
182 | free_netdev(dev); |
183 | return ERR_PTR(error: err); |
184 | } |
185 | #endif |
186 | |
187 | static const struct net_device_ops ultra_netdev_ops = { |
188 | .ndo_open = ultra_open, |
189 | .ndo_stop = ultra_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_rx_mode = ei_set_multicast_list, |
195 | .ndo_validate_addr = eth_validate_addr, |
196 | .ndo_set_mac_address = eth_mac_addr, |
197 | #ifdef CONFIG_NET_POLL_CONTROLLER |
198 | .ndo_poll_controller = ultra_poll, |
199 | #endif |
200 | }; |
201 | |
202 | static int __init ultra_probe1(struct net_device *dev, int ioaddr) |
203 | { |
204 | int i, retval; |
205 | int checksum = 0; |
206 | u8 macaddr[ETH_ALEN]; |
207 | const char *model_name; |
208 | unsigned char eeprom_irq = 0; |
209 | static unsigned version_printed; |
210 | /* Values from various config regs. */ |
211 | unsigned char num_pages, irqreg, addr, piomode; |
212 | unsigned char idreg = inb(port: ioaddr + 7); |
213 | unsigned char reg4 = inb(port: ioaddr + 4) & 0x7f; |
214 | struct ei_device *ei_local = netdev_priv(dev); |
215 | |
216 | if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) |
217 | return -EBUSY; |
218 | |
219 | /* Check the ID nibble. */ |
220 | if ((idreg & 0xF0) != 0x20 /* SMC Ultra */ |
221 | && (idreg & 0xF0) != 0x40) { /* SMC EtherEZ */ |
222 | retval = -ENODEV; |
223 | goto out; |
224 | } |
225 | |
226 | /* Select the station address register set. */ |
227 | outb(value: reg4, port: ioaddr + 4); |
228 | |
229 | for (i = 0; i < 8; i++) |
230 | checksum += inb(port: ioaddr + 8 + i); |
231 | if ((checksum & 0xff) != 0xFF) { |
232 | retval = -ENODEV; |
233 | goto out; |
234 | } |
235 | |
236 | if ((ultra_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0)) |
237 | netdev_info(dev, format: version); |
238 | |
239 | model_name = (idreg & 0xF0) == 0x20 ? "SMC Ultra" : "SMC EtherEZ" ; |
240 | |
241 | for (i = 0; i < 6; i++) |
242 | macaddr[i] = inb(port: ioaddr + 8 + i); |
243 | eth_hw_addr_set(dev, addr: macaddr); |
244 | |
245 | netdev_info(dev, format: "%s at %#3x, %pM" , model_name, |
246 | ioaddr, dev->dev_addr); |
247 | |
248 | /* Switch from the station address to the alternate register set and |
249 | read the useful registers there. */ |
250 | outb(value: 0x80 | reg4, port: ioaddr + 4); |
251 | |
252 | /* Enabled FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */ |
253 | outb(value: 0x80 | inb(port: ioaddr + 0x0c), port: ioaddr + 0x0c); |
254 | piomode = inb(port: ioaddr + 0x8); |
255 | addr = inb(port: ioaddr + 0xb); |
256 | irqreg = inb(port: ioaddr + 0xd); |
257 | |
258 | /* Switch back to the station address register set so that the MS-DOS driver |
259 | can find the card after a warm boot. */ |
260 | outb(value: reg4, port: ioaddr + 4); |
261 | |
262 | if (dev->irq < 2) { |
263 | unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15}; |
264 | int irq; |
265 | |
266 | /* The IRQ bits are split. */ |
267 | irq = irqmap[((irqreg & 0x40) >> 4) + ((irqreg & 0x0c) >> 2)]; |
268 | |
269 | if (irq == 0) { |
270 | pr_cont(", failed to detect IRQ line.\n" ); |
271 | retval = -EAGAIN; |
272 | goto out; |
273 | } |
274 | dev->irq = irq; |
275 | eeprom_irq = 1; |
276 | } |
277 | |
278 | /* The 8390 isn't at the base address, so fake the offset */ |
279 | dev->base_addr = ioaddr+ULTRA_NIC_OFFSET; |
280 | |
281 | { |
282 | static const int addr_tbl[4] = { |
283 | 0x0C0000, 0x0E0000, 0xFC0000, 0xFE0000 |
284 | }; |
285 | static const short num_pages_tbl[4] = { |
286 | 0x20, 0x40, 0x80, 0xff |
287 | }; |
288 | |
289 | dev->mem_start = ((addr & 0x0f) << 13) + addr_tbl[(addr >> 6) & 3] ; |
290 | num_pages = num_pages_tbl[(addr >> 4) & 3]; |
291 | } |
292 | |
293 | ei_status.name = model_name; |
294 | ei_status.word16 = 1; |
295 | ei_status.tx_start_page = START_PG; |
296 | ei_status.rx_start_page = START_PG + TX_PAGES; |
297 | ei_status.stop_page = num_pages; |
298 | |
299 | ei_status.mem = ioremap(offset: dev->mem_start, size: (ei_status.stop_page - START_PG)*256); |
300 | if (!ei_status.mem) { |
301 | pr_cont(", failed to ioremap.\n" ); |
302 | retval = -ENOMEM; |
303 | goto out; |
304 | } |
305 | |
306 | dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG)*256; |
307 | |
308 | if (piomode) { |
309 | pr_cont(", %s IRQ %d programmed-I/O mode.\n" , |
310 | eeprom_irq ? "EEPROM" : "assigned " , dev->irq); |
311 | ei_status.block_input = &ultra_pio_input; |
312 | ei_status.block_output = &ultra_pio_output; |
313 | ei_status.get_8390_hdr = &ultra_pio_get_hdr; |
314 | } else { |
315 | pr_cont(", %s IRQ %d memory %#lx-%#lx.\n" , |
316 | eeprom_irq ? "" : "assigned " , dev->irq, dev->mem_start, |
317 | dev->mem_end-1); |
318 | ei_status.block_input = &ultra_block_input; |
319 | ei_status.block_output = &ultra_block_output; |
320 | ei_status.get_8390_hdr = &ultra_get_8390_hdr; |
321 | } |
322 | ei_status.reset_8390 = &ultra_reset_8390; |
323 | |
324 | dev->netdev_ops = &ultra_netdev_ops; |
325 | NS8390_init(dev, startp: 0); |
326 | ei_local->msg_enable = ultra_msg_enable; |
327 | |
328 | retval = register_netdev(dev); |
329 | if (retval) |
330 | goto out; |
331 | return 0; |
332 | out: |
333 | release_region(ioaddr, ULTRA_IO_EXTENT); |
334 | return retval; |
335 | } |
336 | |
337 | #ifdef __ISAPNP__ |
338 | static int __init ultra_probe_isapnp(struct net_device *dev) |
339 | { |
340 | int i; |
341 | |
342 | for (i = 0; ultra_device_ids[i].vendor != 0; i++) { |
343 | struct pnp_dev *idev = NULL; |
344 | |
345 | while ((idev = pnp_find_dev(NULL, |
346 | vendor: ultra_device_ids[i].vendor, |
347 | function: ultra_device_ids[i].function, |
348 | from: idev))) { |
349 | /* Avoid already found cards from previous calls */ |
350 | if (pnp_device_attach(pnp_dev: idev) < 0) |
351 | continue; |
352 | if (pnp_activate_dev(dev: idev) < 0) { |
353 | __again: |
354 | pnp_device_detach(pnp_dev: idev); |
355 | continue; |
356 | } |
357 | /* if no io and irq, search for next */ |
358 | if (!pnp_port_valid(dev: idev, bar: 0) || !pnp_irq_valid(dev: idev, bar: 0)) |
359 | goto __again; |
360 | /* found it */ |
361 | dev->base_addr = pnp_port_start(dev: idev, bar: 0); |
362 | dev->irq = pnp_irq(dev: idev, bar: 0); |
363 | netdev_info(dev, |
364 | format: "smc-ultra.c: ISAPnP reports %s at i/o %#lx, irq %d.\n" , |
365 | (char *) ultra_device_ids[i].driver_data, |
366 | dev->base_addr, dev->irq); |
367 | if (ultra_probe1(dev, ioaddr: dev->base_addr) != 0) { /* Shouldn't happen. */ |
368 | netdev_err(dev, |
369 | format: "smc-ultra.c: Probe of ISAPnP card at %#lx failed.\n" , |
370 | dev->base_addr); |
371 | pnp_device_detach(pnp_dev: idev); |
372 | return -ENXIO; |
373 | } |
374 | ei_status.priv = (unsigned long)idev; |
375 | break; |
376 | } |
377 | if (!idev) |
378 | continue; |
379 | return 0; |
380 | } |
381 | |
382 | return -ENODEV; |
383 | } |
384 | #endif |
385 | |
386 | static int |
387 | ultra_open(struct net_device *dev) |
388 | { |
389 | int retval; |
390 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ |
391 | unsigned char irq2reg[] = {0, 0, 0x04, 0x08, 0, 0x0C, 0, 0x40, |
392 | 0, 0x04, 0x44, 0x48, 0, 0, 0, 0x4C, }; |
393 | |
394 | retval = request_irq(irq: dev->irq, handler: ei_interrupt, flags: 0, name: dev->name, dev); |
395 | if (retval) |
396 | return retval; |
397 | |
398 | outb(value: 0x00, port: ioaddr); /* Disable shared memory for safety. */ |
399 | outb(value: 0x80, port: ioaddr + 5); |
400 | /* Set the IRQ line. */ |
401 | outb(inb(port: ioaddr + 4) | 0x80, port: ioaddr + 4); |
402 | outb(value: (inb(port: ioaddr + 13) & ~0x4C) | irq2reg[dev->irq], port: ioaddr + 13); |
403 | outb(inb(port: ioaddr + 4) & 0x7f, port: ioaddr + 4); |
404 | |
405 | if (ei_status.block_input == &ultra_pio_input) { |
406 | outb(value: 0x11, port: ioaddr + 6); /* Enable interrupts and PIO. */ |
407 | outb(value: 0x01, port: ioaddr + 0x19); /* Enable ring read auto-wrap. */ |
408 | } else |
409 | outb(value: 0x01, port: ioaddr + 6); /* Enable interrupts and memory. */ |
410 | /* Set the early receive warning level in window 0 high enough not |
411 | to receive ERW interrupts. */ |
412 | outb_p(E8390_NODMA+E8390_PAGE0, port: dev->base_addr); |
413 | outb(value: 0xff, port: dev->base_addr + EN0_ERWCNT); |
414 | ei_open(dev); |
415 | return 0; |
416 | } |
417 | |
418 | static void |
419 | ultra_reset_8390(struct net_device *dev) |
420 | { |
421 | int cmd_port = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC base addr */ |
422 | struct ei_device *ei_local = netdev_priv(dev); |
423 | |
424 | outb(ULTRA_RESET, port: cmd_port); |
425 | netif_dbg(ei_local, hw, dev, "resetting Ultra, t=%ld...\n" , jiffies); |
426 | ei_status.txing = 0; |
427 | |
428 | outb(value: 0x00, port: cmd_port); /* Disable shared memory for safety. */ |
429 | outb(value: 0x80, port: cmd_port + 5); |
430 | if (ei_status.block_input == &ultra_pio_input) |
431 | outb(value: 0x11, port: cmd_port + 6); /* Enable interrupts and PIO. */ |
432 | else |
433 | outb(value: 0x01, port: cmd_port + 6); /* Enable interrupts and memory. */ |
434 | |
435 | netif_dbg(ei_local, hw, dev, "reset done\n" ); |
436 | } |
437 | |
438 | /* Grab the 8390 specific header. Similar to the block_input routine, but |
439 | we don't need to be concerned with ring wrap as the header will be at |
440 | the start of a page, so we optimize accordingly. */ |
441 | |
442 | static void |
443 | ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) |
444 | { |
445 | void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG)<<8); |
446 | |
447 | outb(ULTRA_MEMENB, port: dev->base_addr - ULTRA_NIC_OFFSET); /* shmem on */ |
448 | #ifdef __BIG_ENDIAN |
449 | /* Officially this is what we are doing, but the readl() is faster */ |
450 | /* unfortunately it isn't endian aware of the struct */ |
451 | memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr)); |
452 | hdr->count = le16_to_cpu(hdr->count); |
453 | #else |
454 | ((unsigned int*)hdr)[0] = readl(addr: hdr_start); |
455 | #endif |
456 | outb(value: 0x00, port: dev->base_addr - ULTRA_NIC_OFFSET); /* shmem off */ |
457 | } |
458 | |
459 | /* Block input and output are easy on shared memory ethercards, the only |
460 | complication is when the ring buffer wraps. */ |
461 | |
462 | static void |
463 | ultra_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) |
464 | { |
465 | void __iomem *xfer_start = ei_status.mem + ring_offset - (START_PG<<8); |
466 | |
467 | /* Enable shared memory. */ |
468 | outb(ULTRA_MEMENB, port: dev->base_addr - ULTRA_NIC_OFFSET); |
469 | |
470 | if (ring_offset + count > ei_status.stop_page*256) { |
471 | /* We must wrap the input move. */ |
472 | int semi_count = ei_status.stop_page*256 - ring_offset; |
473 | memcpy_fromio(skb->data, xfer_start, semi_count); |
474 | count -= semi_count; |
475 | memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count); |
476 | } else { |
477 | memcpy_fromio(skb->data, xfer_start, count); |
478 | } |
479 | |
480 | outb(value: 0x00, port: dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */ |
481 | } |
482 | |
483 | static void |
484 | ultra_block_output(struct net_device *dev, int count, const unsigned char *buf, |
485 | int start_page) |
486 | { |
487 | void __iomem *shmem = ei_status.mem + ((start_page - START_PG)<<8); |
488 | |
489 | /* Enable shared memory. */ |
490 | outb(ULTRA_MEMENB, port: dev->base_addr - ULTRA_NIC_OFFSET); |
491 | |
492 | memcpy_toio(shmem, buf, count); |
493 | |
494 | outb(value: 0x00, port: dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */ |
495 | } |
496 | |
497 | /* The identical operations for programmed I/O cards. |
498 | The PIO model is trivial to use: the 16 bit start address is written |
499 | byte-sequentially to IOPA, with no intervening I/O operations, and the |
500 | data is read or written to the IOPD data port. |
501 | The only potential complication is that the address register is shared |
502 | and must be always be rewritten between each read/write direction change. |
503 | This is no problem for us, as the 8390 code ensures that we are single |
504 | threaded. */ |
505 | static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
506 | int ring_page) |
507 | { |
508 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ |
509 | outb(value: 0x00, port: ioaddr + IOPA); /* Set the address, LSB first. */ |
510 | outb(value: ring_page, port: ioaddr + IOPA); |
511 | insw(port: ioaddr + IOPD, addr: hdr, count: sizeof(struct e8390_pkt_hdr)>>1); |
512 | } |
513 | |
514 | static void ultra_pio_input(struct net_device *dev, int count, |
515 | struct sk_buff *skb, int ring_offset) |
516 | { |
517 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ |
518 | char *buf = skb->data; |
519 | |
520 | /* For now set the address again, although it should already be correct. */ |
521 | outb(value: ring_offset, port: ioaddr + IOPA); /* Set the address, LSB first. */ |
522 | outb(value: ring_offset >> 8, port: ioaddr + IOPA); |
523 | /* We know skbuffs are padded to at least word alignment. */ |
524 | insw(port: ioaddr + IOPD, addr: buf, count: (count+1)>>1); |
525 | } |
526 | static void ultra_pio_output(struct net_device *dev, int count, |
527 | const unsigned char *buf, const int start_page) |
528 | { |
529 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ |
530 | outb(value: 0x00, port: ioaddr + IOPA); /* Set the address, LSB first. */ |
531 | outb(value: start_page, port: ioaddr + IOPA); |
532 | /* An extra odd byte is OK here as well. */ |
533 | outsw(port: ioaddr + IOPD, addr: buf, count: (count+1)>>1); |
534 | } |
535 | |
536 | static int |
537 | ultra_close_card(struct net_device *dev) |
538 | { |
539 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* CMDREG */ |
540 | struct ei_device *ei_local = netdev_priv(dev); |
541 | |
542 | netif_stop_queue(dev); |
543 | |
544 | netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n" ); |
545 | |
546 | outb(value: 0x00, port: ioaddr + 6); /* Disable interrupts. */ |
547 | free_irq(dev->irq, dev); |
548 | |
549 | NS8390_init(dev, startp: 0); |
550 | |
551 | /* We should someday disable shared memory and change to 8-bit mode |
552 | "just in case"... */ |
553 | |
554 | return 0; |
555 | } |
556 | |
557 | |
558 | #ifdef MODULE |
559 | #define MAX_ULTRA_CARDS 4 /* Max number of Ultra cards per module */ |
560 | static struct net_device *dev_ultra[MAX_ULTRA_CARDS]; |
561 | static int io[MAX_ULTRA_CARDS]; |
562 | static int irq[MAX_ULTRA_CARDS]; |
563 | |
564 | module_param_hw_array(io, int, ioport, NULL, 0); |
565 | module_param_hw_array(irq, int, irq, NULL, 0); |
566 | module_param_named(msg_enable, ultra_msg_enable, uint, 0444); |
567 | MODULE_PARM_DESC(io, "I/O base address(es)" ); |
568 | MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)" ); |
569 | MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)" ); |
570 | MODULE_DESCRIPTION("SMC Ultra/EtherEZ ISA/PnP Ethernet driver" ); |
571 | MODULE_LICENSE("GPL" ); |
572 | |
573 | /* This is set up so that only a single autoprobe takes place per call. |
574 | ISA device autoprobes on a running machine are not recommended. */ |
575 | static int __init ultra_init_module(void) |
576 | { |
577 | struct net_device *dev; |
578 | int this_dev, found = 0; |
579 | |
580 | for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) { |
581 | if (io[this_dev] == 0) { |
582 | if (this_dev != 0) break; /* only autoprobe 1st one */ |
583 | printk(KERN_NOTICE "smc-ultra.c: Presently autoprobing (not recommended) for a single card.\n" ); |
584 | } |
585 | dev = alloc_ei_netdev(); |
586 | if (!dev) |
587 | break; |
588 | dev->irq = irq[this_dev]; |
589 | dev->base_addr = io[this_dev]; |
590 | if (do_ultra_probe(dev) == 0) { |
591 | dev_ultra[found++] = dev; |
592 | continue; |
593 | } |
594 | free_netdev(dev); |
595 | printk(KERN_WARNING "smc-ultra.c: No SMC Ultra card found (i/o = 0x%x).\n" , io[this_dev]); |
596 | break; |
597 | } |
598 | if (found) |
599 | return 0; |
600 | return -ENXIO; |
601 | } |
602 | module_init(ultra_init_module); |
603 | |
604 | static void cleanup_card(struct net_device *dev) |
605 | { |
606 | /* NB: ultra_close_card() does free_irq */ |
607 | #ifdef __ISAPNP__ |
608 | struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; |
609 | if (idev) |
610 | pnp_device_detach(idev); |
611 | #endif |
612 | release_region(dev->base_addr - ULTRA_NIC_OFFSET, ULTRA_IO_EXTENT); |
613 | iounmap(ei_status.mem); |
614 | } |
615 | |
616 | static void __exit ultra_cleanup_module(void) |
617 | { |
618 | int this_dev; |
619 | |
620 | for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) { |
621 | struct net_device *dev = dev_ultra[this_dev]; |
622 | if (dev) { |
623 | unregister_netdev(dev); |
624 | cleanup_card(dev); |
625 | free_netdev(dev); |
626 | } |
627 | } |
628 | } |
629 | module_exit(ultra_cleanup_module); |
630 | #endif /* MODULE */ |
631 | |