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1da177e4 LT |
1 | /* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */ |
2 | /* | |
3 | Written 1992-94 by Donald Becker. | |
4 | ||
5 | Copyright 1993 United States Government as represented by the | |
6 | Director, National Security Agency. | |
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 | The author may be reached as becker@scyld.com, or C/O | |
12 | Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403 | |
13 | ||
14 | This driver should work with many programmed-I/O 8390-based ethernet | |
15 | boards. Currently it supports the NE1000, NE2000, many clones, | |
16 | and some Cabletron products. | |
17 | ||
18 | Changelog: | |
19 | ||
20 | Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made | |
21 | sanity checks and bad clone support optional. | |
22 | Paul Gortmaker : new reset code, reset card after probe at boot. | |
23 | Paul Gortmaker : multiple card support for module users. | |
24 | Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c | |
25 | Paul Gortmaker : Allow users with bad cards to avoid full probe. | |
26 | Paul Gortmaker : PCI probe changes, more PCI cards supported. | |
27 | rjohnson@analogic.com : Changed init order so an interrupt will only | |
28 | occur after memory is allocated for dev->priv. Deallocated memory | |
29 | last in cleanup_modue() | |
30 | Richard Guenther : Added support for ISAPnP cards | |
31 | Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead. | |
32 | Hayato Fujiwara : Add m32r support. | |
33 | ||
34 | */ | |
35 | ||
36 | /* Routines for the NatSemi-based designs (NE[12]000). */ | |
37 | ||
38 | static const char version1[] = | |
39 | "ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n"; | |
40 | static const char version2[] = | |
41 | "Last modified Nov 1, 2000 by Paul Gortmaker\n"; | |
42 | ||
43 | ||
44 | #include <linux/module.h> | |
45 | #include <linux/kernel.h> | |
46 | #include <linux/errno.h> | |
47 | #include <linux/isapnp.h> | |
48 | #include <linux/init.h> | |
49 | #include <linux/interrupt.h> | |
50 | #include <linux/delay.h> | |
51 | #include <linux/netdevice.h> | |
52 | #include <linux/etherdevice.h> | |
ff5688ae | 53 | #include <linux/jiffies.h> |
1da177e4 LT |
54 | |
55 | #include <asm/system.h> | |
56 | #include <asm/io.h> | |
57 | ||
9cc975e0 RB |
58 | #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938) |
59 | #include <asm/tx4938/rbtx4938.h> | |
60 | #endif | |
61 | ||
1da177e4 LT |
62 | #include "8390.h" |
63 | ||
64 | #define DRV_NAME "ne" | |
65 | ||
66 | /* Some defines that people can play with if so inclined. */ | |
67 | ||
68 | /* Do we support clones that don't adhere to 14,15 of the SAprom ? */ | |
69 | #define SUPPORT_NE_BAD_CLONES | |
70 | ||
71 | /* Do we perform extra sanity checks on stuff ? */ | |
72 | /* #define NE_SANITY_CHECK */ | |
73 | ||
74 | /* Do we implement the read before write bugfix ? */ | |
75 | /* #define NE_RW_BUGFIX */ | |
76 | ||
77 | /* Do we have a non std. amount of memory? (in units of 256 byte pages) */ | |
78 | /* #define PACKETBUF_MEMSIZE 0x40 */ | |
79 | ||
80 | /* A zero-terminated list of I/O addresses to be probed at boot. */ | |
81 | #ifndef MODULE | |
82 | static unsigned int netcard_portlist[] __initdata = { | |
83 | 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0 | |
84 | }; | |
85 | #endif | |
86 | ||
87 | static struct isapnp_device_id isapnp_clone_list[] __initdata = { | |
88 | { ISAPNP_CARD_ID('A','X','E',0x2011), | |
89 | ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011), | |
90 | (long) "NetGear EA201" }, | |
91 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, | |
92 | ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216), | |
93 | (long) "NN NE2000" }, | |
94 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, | |
95 | ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6), | |
96 | (long) "Generic PNP" }, | |
97 | { } /* terminate list */ | |
98 | }; | |
99 | ||
100 | MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list); | |
101 | ||
102 | #ifdef SUPPORT_NE_BAD_CLONES | |
103 | /* A list of bad clones that we none-the-less recognize. */ | |
104 | static struct { const char *name8, *name16; unsigned char SAprefix[4];} | |
105 | bad_clone_list[] __initdata = { | |
106 | {"DE100", "DE200", {0x00, 0xDE, 0x01,}}, | |
107 | {"DE120", "DE220", {0x00, 0x80, 0xc8,}}, | |
108 | {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */ | |
109 | {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}}, | |
110 | {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */ | |
111 | {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */ | |
112 | {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */ | |
113 | {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */ | |
114 | {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */ | |
115 | {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */ | |
116 | {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */ | |
117 | {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */ | |
118 | {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */ | |
9cc975e0 RB |
119 | #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938) |
120 | {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */ | |
121 | #endif | |
1da177e4 LT |
122 | {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */ |
123 | {NULL,} | |
124 | }; | |
125 | #endif | |
126 | ||
127 | /* ---- No user-serviceable parts below ---- */ | |
128 | ||
129 | #define NE_BASE (dev->base_addr) | |
130 | #define NE_CMD 0x00 | |
131 | #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ | |
132 | #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */ | |
133 | #define NE_IO_EXTENT 0x20 | |
134 | ||
135 | #define NE1SM_START_PG 0x20 /* First page of TX buffer */ | |
136 | #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ | |
137 | #define NESM_START_PG 0x40 /* First page of TX buffer */ | |
138 | #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ | |
139 | ||
44456d37 | 140 | #if defined(CONFIG_PLAT_MAPPI) |
1da177e4 | 141 | # define DCR_VAL 0x4b |
aedc0e52 SS |
142 | #elif defined(CONFIG_PLAT_OAKS32R) || \ |
143 | defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938) | |
144 | # define DCR_VAL 0x48 /* 8-bit mode */ | |
1da177e4 LT |
145 | #else |
146 | # define DCR_VAL 0x49 | |
147 | #endif | |
148 | ||
149 | static int ne_probe1(struct net_device *dev, int ioaddr); | |
150 | static int ne_probe_isapnp(struct net_device *dev); | |
151 | ||
152 | static int ne_open(struct net_device *dev); | |
153 | static int ne_close(struct net_device *dev); | |
154 | ||
155 | static void ne_reset_8390(struct net_device *dev); | |
156 | static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, | |
157 | int ring_page); | |
158 | static void ne_block_input(struct net_device *dev, int count, | |
159 | struct sk_buff *skb, int ring_offset); | |
160 | static void ne_block_output(struct net_device *dev, const int count, | |
161 | const unsigned char *buf, const int start_page); | |
162 | ||
163 | \f | |
164 | /* Probe for various non-shared-memory ethercards. | |
165 | ||
166 | NEx000-clone boards have a Station Address PROM (SAPROM) in the packet | |
167 | buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of | |
168 | the SAPROM, while other supposed NE2000 clones must be detected by their | |
169 | SA prefix. | |
170 | ||
171 | Reading the SAPROM from a word-wide card with the 8390 set in byte-wide | |
172 | mode results in doubled values, which can be detected and compensated for. | |
173 | ||
174 | The probe is also responsible for initializing the card and filling | |
175 | in the 'dev' and 'ei_status' structures. | |
176 | ||
177 | We use the minimum memory size for some ethercard product lines, iff we can't | |
178 | distinguish models. You can increase the packet buffer size by setting | |
179 | PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are: | |
180 | E1010 starts at 0x100 and ends at 0x2000. | |
181 | E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory") | |
182 | E2010 starts at 0x100 and ends at 0x4000. | |
183 | E2010-x starts at 0x100 and ends at 0xffff. */ | |
184 | ||
185 | static int __init do_ne_probe(struct net_device *dev) | |
186 | { | |
187 | unsigned int base_addr = dev->base_addr; | |
188 | #ifndef MODULE | |
189 | int orig_irq = dev->irq; | |
190 | #endif | |
191 | ||
192 | SET_MODULE_OWNER(dev); | |
193 | ||
194 | /* First check any supplied i/o locations. User knows best. <cough> */ | |
195 | if (base_addr > 0x1ff) /* Check a single specified location. */ | |
196 | return ne_probe1(dev, base_addr); | |
197 | else if (base_addr != 0) /* Don't probe at all. */ | |
198 | return -ENXIO; | |
199 | ||
200 | /* Then look for any installed ISAPnP clones */ | |
201 | if (isapnp_present() && (ne_probe_isapnp(dev) == 0)) | |
202 | return 0; | |
203 | ||
204 | #ifndef MODULE | |
205 | /* Last resort. The semi-risky ISA auto-probe. */ | |
206 | for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) { | |
207 | int ioaddr = netcard_portlist[base_addr]; | |
208 | dev->irq = orig_irq; | |
209 | if (ne_probe1(dev, ioaddr) == 0) | |
210 | return 0; | |
211 | } | |
212 | #endif | |
213 | ||
214 | return -ENODEV; | |
215 | } | |
216 | ||
1da177e4 LT |
217 | #ifndef MODULE |
218 | struct net_device * __init ne_probe(int unit) | |
219 | { | |
220 | struct net_device *dev = alloc_ei_netdev(); | |
221 | int err; | |
222 | ||
223 | if (!dev) | |
224 | return ERR_PTR(-ENOMEM); | |
225 | ||
226 | sprintf(dev->name, "eth%d", unit); | |
227 | netdev_boot_setup_check(dev); | |
228 | ||
9cc975e0 | 229 | #ifdef CONFIG_TOSHIBA_RBTX4938 |
17c281ab | 230 | dev->base_addr = RBTX4938_RTL_8019_BASE; |
9cc975e0 RB |
231 | dev->irq = RBTX4938_RTL_8019_IRQ; |
232 | #endif | |
1da177e4 LT |
233 | err = do_ne_probe(dev); |
234 | if (err) | |
235 | goto out; | |
1da177e4 | 236 | return dev; |
1da177e4 LT |
237 | out: |
238 | free_netdev(dev); | |
239 | return ERR_PTR(err); | |
240 | } | |
241 | #endif | |
242 | ||
243 | static int __init ne_probe_isapnp(struct net_device *dev) | |
244 | { | |
245 | int i; | |
246 | ||
247 | for (i = 0; isapnp_clone_list[i].vendor != 0; i++) { | |
248 | struct pnp_dev *idev = NULL; | |
249 | ||
250 | while ((idev = pnp_find_dev(NULL, | |
251 | isapnp_clone_list[i].vendor, | |
252 | isapnp_clone_list[i].function, | |
253 | idev))) { | |
254 | /* Avoid already found cards from previous calls */ | |
255 | if (pnp_device_attach(idev) < 0) | |
256 | continue; | |
257 | if (pnp_activate_dev(idev) < 0) { | |
258 | pnp_device_detach(idev); | |
259 | continue; | |
260 | } | |
261 | /* if no io and irq, search for next */ | |
262 | if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) { | |
263 | pnp_device_detach(idev); | |
264 | continue; | |
265 | } | |
266 | /* found it */ | |
267 | dev->base_addr = pnp_port_start(idev, 0); | |
268 | dev->irq = pnp_irq(idev, 0); | |
269 | printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n", | |
270 | (char *) isapnp_clone_list[i].driver_data, | |
271 | dev->base_addr, dev->irq); | |
272 | if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */ | |
273 | printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr); | |
274 | pnp_device_detach(idev); | |
275 | return -ENXIO; | |
276 | } | |
277 | ei_status.priv = (unsigned long)idev; | |
278 | break; | |
279 | } | |
280 | if (!idev) | |
281 | continue; | |
282 | return 0; | |
283 | } | |
284 | ||
285 | return -ENODEV; | |
286 | } | |
287 | ||
288 | static int __init ne_probe1(struct net_device *dev, int ioaddr) | |
289 | { | |
290 | int i; | |
291 | unsigned char SA_prom[32]; | |
292 | int wordlength = 2; | |
293 | const char *name = NULL; | |
294 | int start_page, stop_page; | |
295 | int neX000, ctron, copam, bad_card; | |
296 | int reg0, ret; | |
297 | static unsigned version_printed; | |
298 | ||
299 | if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) | |
300 | return -EBUSY; | |
301 | ||
302 | reg0 = inb_p(ioaddr); | |
303 | if (reg0 == 0xFF) { | |
304 | ret = -ENODEV; | |
305 | goto err_out; | |
306 | } | |
307 | ||
308 | /* Do a preliminary verification that we have a 8390. */ | |
309 | { | |
310 | int regd; | |
311 | outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); | |
312 | regd = inb_p(ioaddr + 0x0d); | |
313 | outb_p(0xff, ioaddr + 0x0d); | |
314 | outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); | |
315 | inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ | |
316 | if (inb_p(ioaddr + EN0_COUNTER0) != 0) { | |
317 | outb_p(reg0, ioaddr); | |
318 | outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */ | |
319 | ret = -ENODEV; | |
320 | goto err_out; | |
321 | } | |
322 | } | |
323 | ||
324 | if (ei_debug && version_printed++ == 0) | |
325 | printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); | |
326 | ||
327 | printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr); | |
328 | ||
329 | /* A user with a poor card that fails to ack the reset, or that | |
330 | does not have a valid 0x57,0x57 signature can still use this | |
331 | without having to recompile. Specifying an i/o address along | |
332 | with an otherwise unused dev->mem_end value of "0xBAD" will | |
333 | cause the driver to skip these parts of the probe. */ | |
334 | ||
335 | bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad)); | |
336 | ||
337 | /* Reset card. Who knows what dain-bramaged state it was left in. */ | |
338 | ||
339 | { | |
340 | unsigned long reset_start_time = jiffies; | |
341 | ||
342 | /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ | |
343 | outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); | |
344 | ||
345 | while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0) | |
ff5688ae | 346 | if (time_after(jiffies, reset_start_time + 2*HZ/100)) { |
1da177e4 LT |
347 | if (bad_card) { |
348 | printk(" (warning: no reset ack)"); | |
349 | break; | |
350 | } else { | |
351 | printk(" not found (no reset ack).\n"); | |
352 | ret = -ENODEV; | |
353 | goto err_out; | |
354 | } | |
355 | } | |
356 | ||
357 | outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */ | |
358 | } | |
359 | ||
360 | /* Read the 16 bytes of station address PROM. | |
361 | We must first initialize registers, similar to NS8390_init(eifdev, 0). | |
362 | We can't reliably read the SAPROM address without this. | |
363 | (I learned the hard way!). */ | |
364 | { | |
365 | struct {unsigned char value, offset; } program_seq[] = | |
366 | { | |
367 | {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ | |
368 | {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */ | |
369 | {0x00, EN0_RCNTLO}, /* Clear the count regs. */ | |
370 | {0x00, EN0_RCNTHI}, | |
371 | {0x00, EN0_IMR}, /* Mask completion irq. */ | |
372 | {0xFF, EN0_ISR}, | |
373 | {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ | |
374 | {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ | |
375 | {32, EN0_RCNTLO}, | |
376 | {0x00, EN0_RCNTHI}, | |
377 | {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ | |
378 | {0x00, EN0_RSARHI}, | |
379 | {E8390_RREAD+E8390_START, E8390_CMD}, | |
380 | }; | |
381 | ||
382 | for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++) | |
383 | outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); | |
384 | ||
385 | } | |
386 | for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) { | |
387 | SA_prom[i] = inb(ioaddr + NE_DATAPORT); | |
388 | SA_prom[i+1] = inb(ioaddr + NE_DATAPORT); | |
389 | if (SA_prom[i] != SA_prom[i+1]) | |
390 | wordlength = 1; | |
391 | } | |
392 | ||
393 | if (wordlength == 2) | |
394 | { | |
395 | for (i = 0; i < 16; i++) | |
396 | SA_prom[i] = SA_prom[i+i]; | |
397 | /* We must set the 8390 for word mode. */ | |
398 | outb_p(DCR_VAL, ioaddr + EN0_DCFG); | |
399 | start_page = NESM_START_PG; | |
aedc0e52 SS |
400 | |
401 | /* | |
402 | * Realtek RTL8019AS datasheet says that the PSTOP register | |
403 | * shouldn't exceed 0x60 in 8-bit mode. | |
404 | * This chip can be identified by reading the signature from | |
405 | * the remote byte count registers (otherwise write-only)... | |
406 | */ | |
407 | if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */ | |
408 | inb(ioaddr + EN0_RCNTLO) == 0x50 && | |
409 | inb(ioaddr + EN0_RCNTHI) == 0x70) | |
410 | stop_page = 0x60; | |
411 | else | |
412 | stop_page = NESM_STOP_PG; | |
1da177e4 LT |
413 | } else { |
414 | start_page = NE1SM_START_PG; | |
aedc0e52 | 415 | stop_page = NE1SM_STOP_PG; |
1da177e4 LT |
416 | } |
417 | ||
418 | #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R) | |
419 | neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57) | |
420 | || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42)); | |
421 | #else | |
422 | neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57); | |
423 | #endif | |
424 | ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d); | |
425 | copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00); | |
426 | ||
427 | /* Set up the rest of the parameters. */ | |
428 | if (neX000 || bad_card || copam) { | |
429 | name = (wordlength == 2) ? "NE2000" : "NE1000"; | |
430 | } | |
431 | else if (ctron) | |
432 | { | |
433 | name = (wordlength == 2) ? "Ctron-8" : "Ctron-16"; | |
434 | start_page = 0x01; | |
435 | stop_page = (wordlength == 2) ? 0x40 : 0x20; | |
436 | } | |
437 | else | |
438 | { | |
439 | #ifdef SUPPORT_NE_BAD_CLONES | |
440 | /* Ack! Well, there might be a *bad* NE*000 clone there. | |
441 | Check for total bogus addresses. */ | |
442 | for (i = 0; bad_clone_list[i].name8; i++) | |
443 | { | |
444 | if (SA_prom[0] == bad_clone_list[i].SAprefix[0] && | |
445 | SA_prom[1] == bad_clone_list[i].SAprefix[1] && | |
446 | SA_prom[2] == bad_clone_list[i].SAprefix[2]) | |
447 | { | |
448 | if (wordlength == 2) | |
449 | { | |
450 | name = bad_clone_list[i].name16; | |
451 | } else { | |
452 | name = bad_clone_list[i].name8; | |
453 | } | |
454 | break; | |
455 | } | |
456 | } | |
457 | if (bad_clone_list[i].name8 == NULL) | |
458 | { | |
459 | printk(" not found (invalid signature %2.2x %2.2x).\n", | |
460 | SA_prom[14], SA_prom[15]); | |
461 | ret = -ENXIO; | |
462 | goto err_out; | |
463 | } | |
464 | #else | |
465 | printk(" not found.\n"); | |
466 | ret = -ENXIO; | |
467 | goto err_out; | |
468 | #endif | |
469 | } | |
470 | ||
471 | if (dev->irq < 2) | |
472 | { | |
473 | unsigned long cookie = probe_irq_on(); | |
474 | outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */ | |
475 | outb_p(0x00, ioaddr + EN0_RCNTLO); | |
476 | outb_p(0x00, ioaddr + EN0_RCNTHI); | |
477 | outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */ | |
478 | mdelay(10); /* wait 10ms for interrupt to propagate */ | |
479 | outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */ | |
480 | dev->irq = probe_irq_off(cookie); | |
481 | if (ei_debug > 2) | |
482 | printk(" autoirq is %d\n", dev->irq); | |
483 | } else if (dev->irq == 2) | |
484 | /* Fixup for users that don't know that IRQ 2 is really IRQ 9, | |
485 | or don't know which one to set. */ | |
486 | dev->irq = 9; | |
487 | ||
488 | if (! dev->irq) { | |
489 | printk(" failed to detect IRQ line.\n"); | |
490 | ret = -EAGAIN; | |
491 | goto err_out; | |
492 | } | |
493 | ||
494 | /* Snarf the interrupt now. There's no point in waiting since we cannot | |
495 | share and the board will usually be enabled. */ | |
496 | ret = request_irq(dev->irq, ei_interrupt, 0, name, dev); | |
497 | if (ret) { | |
498 | printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret); | |
499 | goto err_out; | |
500 | } | |
501 | ||
502 | dev->base_addr = ioaddr; | |
503 | ||
504 | #ifdef CONFIG_PLAT_MAPPI | |
505 | outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, | |
506 | ioaddr + E8390_CMD); /* 0x61 */ | |
507 | for (i = 0 ; i < ETHER_ADDR_LEN ; i++) { | |
508 | dev->dev_addr[i] = SA_prom[i] | |
509 | = inb_p(ioaddr + EN1_PHYS_SHIFT(i)); | |
510 | printk(" %2.2x", SA_prom[i]); | |
511 | } | |
512 | #else | |
513 | for(i = 0; i < ETHER_ADDR_LEN; i++) { | |
514 | printk(" %2.2x", SA_prom[i]); | |
515 | dev->dev_addr[i] = SA_prom[i]; | |
516 | } | |
517 | #endif | |
518 | ||
519 | printk("\n%s: %s found at %#x, using IRQ %d.\n", | |
520 | dev->name, name, ioaddr, dev->irq); | |
521 | ||
522 | ei_status.name = name; | |
523 | ei_status.tx_start_page = start_page; | |
524 | ei_status.stop_page = stop_page; | |
9cc975e0 | 525 | |
aedc0e52 SS |
526 | /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */ |
527 | ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01)); | |
1da177e4 LT |
528 | |
529 | ei_status.rx_start_page = start_page + TX_PAGES; | |
530 | #ifdef PACKETBUF_MEMSIZE | |
531 | /* Allow the packet buffer size to be overridden by know-it-alls. */ | |
532 | ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; | |
533 | #endif | |
534 | ||
535 | ei_status.reset_8390 = &ne_reset_8390; | |
536 | ei_status.block_input = &ne_block_input; | |
537 | ei_status.block_output = &ne_block_output; | |
538 | ei_status.get_8390_hdr = &ne_get_8390_hdr; | |
539 | ei_status.priv = 0; | |
540 | dev->open = &ne_open; | |
541 | dev->stop = &ne_close; | |
542 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
543 | dev->poll_controller = ei_poll; | |
544 | #endif | |
545 | NS8390_init(dev, 0); | |
b1fc5505 | 546 | |
547 | ret = register_netdev(dev); | |
548 | if (ret) | |
549 | goto out_irq; | |
1da177e4 LT |
550 | return 0; |
551 | ||
b1fc5505 | 552 | out_irq: |
553 | free_irq(dev->irq, dev); | |
1da177e4 LT |
554 | err_out: |
555 | release_region(ioaddr, NE_IO_EXTENT); | |
556 | return ret; | |
557 | } | |
558 | ||
559 | static int ne_open(struct net_device *dev) | |
560 | { | |
561 | ei_open(dev); | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static int ne_close(struct net_device *dev) | |
566 | { | |
567 | if (ei_debug > 1) | |
568 | printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name); | |
569 | ei_close(dev); | |
570 | return 0; | |
571 | } | |
572 | ||
573 | /* Hard reset the card. This used to pause for the same period that a | |
574 | 8390 reset command required, but that shouldn't be necessary. */ | |
575 | ||
576 | static void ne_reset_8390(struct net_device *dev) | |
577 | { | |
578 | unsigned long reset_start_time = jiffies; | |
579 | ||
580 | if (ei_debug > 1) | |
581 | printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies); | |
582 | ||
583 | /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ | |
584 | outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); | |
585 | ||
586 | ei_status.txing = 0; | |
587 | ei_status.dmaing = 0; | |
588 | ||
589 | /* This check _should_not_ be necessary, omit eventually. */ | |
590 | while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) | |
ff5688ae | 591 | if (time_after(jiffies, reset_start_time + 2*HZ/100)) { |
1da177e4 LT |
592 | printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name); |
593 | break; | |
594 | } | |
595 | outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ | |
596 | } | |
597 | ||
598 | /* Grab the 8390 specific header. Similar to the block_input routine, but | |
599 | we don't need to be concerned with ring wrap as the header will be at | |
600 | the start of a page, so we optimize accordingly. */ | |
601 | ||
602 | static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) | |
603 | { | |
604 | int nic_base = dev->base_addr; | |
605 | ||
606 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
607 | ||
608 | if (ei_status.dmaing) | |
609 | { | |
610 | printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr " | |
611 | "[DMAstat:%d][irqlock:%d].\n", | |
612 | dev->name, ei_status.dmaing, ei_status.irqlock); | |
613 | return; | |
614 | } | |
615 | ||
616 | ei_status.dmaing |= 0x01; | |
617 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); | |
618 | outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); | |
619 | outb_p(0, nic_base + EN0_RCNTHI); | |
620 | outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ | |
621 | outb_p(ring_page, nic_base + EN0_RSARHI); | |
622 | outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
623 | ||
624 | if (ei_status.word16) | |
625 | insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); | |
626 | else | |
627 | insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)); | |
628 | ||
629 | outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
630 | ei_status.dmaing &= ~0x01; | |
631 | ||
632 | le16_to_cpus(&hdr->count); | |
633 | } | |
634 | ||
635 | /* Block input and output, similar to the Crynwr packet driver. If you | |
636 | are porting to a new ethercard, look at the packet driver source for hints. | |
637 | The NEx000 doesn't share the on-board packet memory -- you have to put | |
638 | the packet out through the "remote DMA" dataport using outb. */ | |
639 | ||
640 | static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) | |
641 | { | |
642 | #ifdef NE_SANITY_CHECK | |
643 | int xfer_count = count; | |
644 | #endif | |
645 | int nic_base = dev->base_addr; | |
646 | char *buf = skb->data; | |
647 | ||
648 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
649 | if (ei_status.dmaing) | |
650 | { | |
651 | printk(KERN_EMERG "%s: DMAing conflict in ne_block_input " | |
652 | "[DMAstat:%d][irqlock:%d].\n", | |
653 | dev->name, ei_status.dmaing, ei_status.irqlock); | |
654 | return; | |
655 | } | |
656 | ei_status.dmaing |= 0x01; | |
657 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); | |
658 | outb_p(count & 0xff, nic_base + EN0_RCNTLO); | |
659 | outb_p(count >> 8, nic_base + EN0_RCNTHI); | |
660 | outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); | |
661 | outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); | |
662 | outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
663 | if (ei_status.word16) | |
664 | { | |
665 | insw(NE_BASE + NE_DATAPORT,buf,count>>1); | |
666 | if (count & 0x01) | |
667 | { | |
668 | buf[count-1] = inb(NE_BASE + NE_DATAPORT); | |
669 | #ifdef NE_SANITY_CHECK | |
670 | xfer_count++; | |
671 | #endif | |
672 | } | |
673 | } else { | |
674 | insb(NE_BASE + NE_DATAPORT, buf, count); | |
675 | } | |
676 | ||
677 | #ifdef NE_SANITY_CHECK | |
678 | /* This was for the ALPHA version only, but enough people have | |
679 | been encountering problems so it is still here. If you see | |
680 | this message you either 1) have a slightly incompatible clone | |
681 | or 2) have noise/speed problems with your bus. */ | |
682 | ||
683 | if (ei_debug > 1) | |
684 | { | |
685 | /* DMA termination address check... */ | |
686 | int addr, tries = 20; | |
687 | do { | |
688 | /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here | |
689 | -- it's broken for Rx on some cards! */ | |
690 | int high = inb_p(nic_base + EN0_RSARHI); | |
691 | int low = inb_p(nic_base + EN0_RSARLO); | |
692 | addr = (high << 8) + low; | |
693 | if (((ring_offset + xfer_count) & 0xff) == low) | |
694 | break; | |
695 | } while (--tries > 0); | |
696 | if (tries <= 0) | |
697 | printk(KERN_WARNING "%s: RX transfer address mismatch," | |
698 | "%#4.4x (expected) vs. %#4.4x (actual).\n", | |
699 | dev->name, ring_offset + xfer_count, addr); | |
700 | } | |
701 | #endif | |
702 | outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
703 | ei_status.dmaing &= ~0x01; | |
704 | } | |
705 | ||
706 | static void ne_block_output(struct net_device *dev, int count, | |
707 | const unsigned char *buf, const int start_page) | |
708 | { | |
709 | int nic_base = NE_BASE; | |
710 | unsigned long dma_start; | |
711 | #ifdef NE_SANITY_CHECK | |
712 | int retries = 0; | |
713 | #endif | |
714 | ||
715 | /* Round the count up for word writes. Do we need to do this? | |
716 | What effect will an odd byte count have on the 8390? | |
717 | I should check someday. */ | |
718 | ||
719 | if (ei_status.word16 && (count & 0x01)) | |
720 | count++; | |
721 | ||
722 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
723 | if (ei_status.dmaing) | |
724 | { | |
725 | printk(KERN_EMERG "%s: DMAing conflict in ne_block_output." | |
726 | "[DMAstat:%d][irqlock:%d]\n", | |
727 | dev->name, ei_status.dmaing, ei_status.irqlock); | |
728 | return; | |
729 | } | |
730 | ei_status.dmaing |= 0x01; | |
731 | /* We should already be in page 0, but to be safe... */ | |
732 | outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); | |
733 | ||
734 | #ifdef NE_SANITY_CHECK | |
735 | retry: | |
736 | #endif | |
737 | ||
738 | #ifdef NE8390_RW_BUGFIX | |
739 | /* Handle the read-before-write bug the same way as the | |
740 | Crynwr packet driver -- the NatSemi method doesn't work. | |
741 | Actually this doesn't always work either, but if you have | |
742 | problems with your NEx000 this is better than nothing! */ | |
743 | ||
744 | outb_p(0x42, nic_base + EN0_RCNTLO); | |
745 | outb_p(0x00, nic_base + EN0_RCNTHI); | |
746 | outb_p(0x42, nic_base + EN0_RSARLO); | |
747 | outb_p(0x00, nic_base + EN0_RSARHI); | |
748 | outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
749 | /* Make certain that the dummy read has occurred. */ | |
750 | udelay(6); | |
751 | #endif | |
752 | ||
753 | outb_p(ENISR_RDC, nic_base + EN0_ISR); | |
754 | ||
755 | /* Now the normal output. */ | |
756 | outb_p(count & 0xff, nic_base + EN0_RCNTLO); | |
757 | outb_p(count >> 8, nic_base + EN0_RCNTHI); | |
758 | outb_p(0x00, nic_base + EN0_RSARLO); | |
759 | outb_p(start_page, nic_base + EN0_RSARHI); | |
760 | ||
761 | outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD); | |
762 | if (ei_status.word16) { | |
763 | outsw(NE_BASE + NE_DATAPORT, buf, count>>1); | |
764 | } else { | |
765 | outsb(NE_BASE + NE_DATAPORT, buf, count); | |
766 | } | |
767 | ||
768 | dma_start = jiffies; | |
769 | ||
770 | #ifdef NE_SANITY_CHECK | |
771 | /* This was for the ALPHA version only, but enough people have | |
772 | been encountering problems so it is still here. */ | |
773 | ||
774 | if (ei_debug > 1) | |
775 | { | |
776 | /* DMA termination address check... */ | |
777 | int addr, tries = 20; | |
778 | do { | |
779 | int high = inb_p(nic_base + EN0_RSARHI); | |
780 | int low = inb_p(nic_base + EN0_RSARLO); | |
781 | addr = (high << 8) + low; | |
782 | if ((start_page << 8) + count == addr) | |
783 | break; | |
784 | } while (--tries > 0); | |
785 | ||
786 | if (tries <= 0) | |
787 | { | |
788 | printk(KERN_WARNING "%s: Tx packet transfer address mismatch," | |
789 | "%#4.4x (expected) vs. %#4.4x (actual).\n", | |
790 | dev->name, (start_page << 8) + count, addr); | |
791 | if (retries++ == 0) | |
792 | goto retry; | |
793 | } | |
794 | } | |
795 | #endif | |
796 | ||
797 | while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0) | |
ff5688ae | 798 | if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */ |
1da177e4 LT |
799 | printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name); |
800 | ne_reset_8390(dev); | |
801 | NS8390_init(dev,1); | |
802 | break; | |
803 | } | |
804 | ||
805 | outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
806 | ei_status.dmaing &= ~0x01; | |
807 | return; | |
808 | } | |
809 | ||
810 | \f | |
811 | #ifdef MODULE | |
812 | #define MAX_NE_CARDS 4 /* Max number of NE cards per module */ | |
813 | static struct net_device *dev_ne[MAX_NE_CARDS]; | |
814 | static int io[MAX_NE_CARDS]; | |
815 | static int irq[MAX_NE_CARDS]; | |
816 | static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */ | |
817 | ||
818 | module_param_array(io, int, NULL, 0); | |
819 | module_param_array(irq, int, NULL, 0); | |
820 | module_param_array(bad, int, NULL, 0); | |
821 | MODULE_PARM_DESC(io, "I/O base address(es),required"); | |
822 | MODULE_PARM_DESC(irq, "IRQ number(s)"); | |
823 | MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures"); | |
824 | MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver"); | |
825 | MODULE_LICENSE("GPL"); | |
826 | ||
827 | /* This is set up so that no ISA autoprobe takes place. We can't guarantee | |
828 | that the ne2k probe is the last 8390 based probe to take place (as it | |
829 | is at boot) and so the probe will get confused by any other 8390 cards. | |
830 | ISA device autoprobes on a running machine are not recommended anyway. */ | |
831 | ||
832 | int init_module(void) | |
833 | { | |
834 | int this_dev, found = 0; | |
835 | ||
836 | for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { | |
837 | struct net_device *dev = alloc_ei_netdev(); | |
838 | if (!dev) | |
839 | break; | |
840 | dev->irq = irq[this_dev]; | |
841 | dev->mem_end = bad[this_dev]; | |
842 | dev->base_addr = io[this_dev]; | |
843 | if (do_ne_probe(dev) == 0) { | |
b1fc5505 | 844 | dev_ne[found++] = dev; |
845 | continue; | |
1da177e4 LT |
846 | } |
847 | free_netdev(dev); | |
848 | if (found) | |
849 | break; | |
850 | if (io[this_dev] != 0) | |
851 | printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]); | |
852 | else | |
853 | printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n"); | |
854 | return -ENXIO; | |
855 | } | |
856 | if (found) | |
857 | return 0; | |
858 | return -ENODEV; | |
859 | } | |
860 | ||
64916f1e DV |
861 | static void cleanup_card(struct net_device *dev) |
862 | { | |
863 | struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; | |
864 | if (idev) | |
865 | pnp_device_detach(idev); | |
866 | free_irq(dev->irq, dev); | |
867 | release_region(dev->base_addr, NE_IO_EXTENT); | |
868 | } | |
869 | ||
1da177e4 LT |
870 | void cleanup_module(void) |
871 | { | |
872 | int this_dev; | |
873 | ||
874 | for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { | |
875 | struct net_device *dev = dev_ne[this_dev]; | |
876 | if (dev) { | |
877 | unregister_netdev(dev); | |
878 | cleanup_card(dev); | |
879 | free_netdev(dev); | |
880 | } | |
881 | } | |
882 | } | |
883 | #endif /* MODULE */ |