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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> |
53 | #include <linux/jiffies.h> |
54 | #include <linux/platform_device.h> |
55 | |
56 | #include <asm/system.h> |
57 | #include <asm/io.h> |
58 | |
59 | #include "8390.h" |
60 | |
61 | #define DRV_NAME "ne" |
62 | |
63 | /* Some defines that people can play with if so inclined. */ |
64 | |
65 | /* Do we support clones that don't adhere to 14,15 of the SAprom ? */ |
66 | #define SUPPORT_NE_BAD_CLONES |
67 | /* 0xbad = bad sig or no reset ack */ |
68 | #define BAD 0xbad |
69 | |
70 | #define MAX_NE_CARDS 4 /* Max number of NE cards per module */ |
71 | static struct platform_device *pdev_ne[MAX_NE_CARDS]; |
72 | static int io[MAX_NE_CARDS]; |
73 | static int irq[MAX_NE_CARDS]; |
74 | static int bad[MAX_NE_CARDS]; |
75 | |
76 | #ifdef MODULE |
77 | module_param_array(io, int, NULL, 0); |
78 | module_param_array(irq, int, NULL, 0); |
79 | module_param_array(bad, int, NULL, 0); |
80 | MODULE_PARM_DESC(io, "I/O base address(es),required"); |
81 | MODULE_PARM_DESC(irq, "IRQ number(s)"); |
82 | MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures"); |
83 | MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver"); |
84 | MODULE_LICENSE("GPL"); |
85 | #endif /* MODULE */ |
86 | |
87 | /* Do we perform extra sanity checks on stuff ? */ |
88 | /* #define NE_SANITY_CHECK */ |
89 | |
90 | /* Do we implement the read before write bugfix ? */ |
91 | /* #define NE_RW_BUGFIX */ |
92 | |
93 | /* Do we have a non std. amount of memory? (in units of 256 byte pages) */ |
94 | /* #define PACKETBUF_MEMSIZE 0x40 */ |
95 | |
96 | /* This is set up so that no ISA autoprobe takes place. We can't guarantee |
97 | that the ne2k probe is the last 8390 based probe to take place (as it |
98 | is at boot) and so the probe will get confused by any other 8390 cards. |
99 | ISA device autoprobes on a running machine are not recommended anyway. */ |
100 | #if !defined(MODULE) && (defined(CONFIG_ISA) || defined(CONFIG_M32R)) |
101 | /* Do we need a portlist for the ISA auto-probe ? */ |
102 | #define NEEDS_PORTLIST |
103 | #endif |
104 | |
105 | /* A zero-terminated list of I/O addresses to be probed at boot. */ |
106 | #ifdef NEEDS_PORTLIST |
107 | static unsigned int netcard_portlist[] __initdata = { |
108 | 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0 |
109 | }; |
110 | #endif |
111 | |
112 | static struct isapnp_device_id isapnp_clone_list[] __initdata = { |
113 | { ISAPNP_CARD_ID('A','X','E',0x2011), |
114 | ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011), |
115 | (long) "NetGear EA201" }, |
116 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
117 | ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216), |
118 | (long) "NN NE2000" }, |
119 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
120 | ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6), |
121 | (long) "Generic PNP" }, |
122 | { } /* terminate list */ |
123 | }; |
124 | |
125 | MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list); |
126 | |
127 | #ifdef SUPPORT_NE_BAD_CLONES |
128 | /* A list of bad clones that we none-the-less recognize. */ |
129 | static struct { const char *name8, *name16; unsigned char SAprefix[4];} |
130 | bad_clone_list[] __initdata = { |
131 | {"DE100", "DE200", {0x00, 0xDE, 0x01,}}, |
132 | {"DE120", "DE220", {0x00, 0x80, 0xc8,}}, |
133 | {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */ |
134 | {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}}, |
135 | {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */ |
136 | {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */ |
137 | {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */ |
138 | {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */ |
139 | {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */ |
140 | {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */ |
141 | {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */ |
142 | {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */ |
143 | {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */ |
144 | #ifdef CONFIG_MACH_TX49XX |
145 | {"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */ |
146 | #endif |
147 | {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */ |
148 | {NULL,} |
149 | }; |
150 | #endif |
151 | |
152 | /* ---- No user-serviceable parts below ---- */ |
153 | |
154 | #define NE_BASE (dev->base_addr) |
155 | #define NE_CMD 0x00 |
156 | #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ |
157 | #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */ |
158 | #define NE_IO_EXTENT 0x20 |
159 | |
160 | #define NE1SM_START_PG 0x20 /* First page of TX buffer */ |
161 | #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ |
162 | #define NESM_START_PG 0x40 /* First page of TX buffer */ |
163 | #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ |
164 | |
165 | #if defined(CONFIG_PLAT_MAPPI) |
166 | # define DCR_VAL 0x4b |
167 | #elif defined(CONFIG_PLAT_OAKS32R) || \ |
168 | defined(CONFIG_MACH_TX49XX) |
169 | # define DCR_VAL 0x48 /* 8-bit mode */ |
170 | #else |
171 | # define DCR_VAL 0x49 |
172 | #endif |
173 | |
174 | static int ne_probe1(struct net_device *dev, unsigned long ioaddr); |
175 | static int ne_probe_isapnp(struct net_device *dev); |
176 | |
177 | static void ne_reset_8390(struct net_device *dev); |
178 | static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
179 | int ring_page); |
180 | static void ne_block_input(struct net_device *dev, int count, |
181 | struct sk_buff *skb, int ring_offset); |
182 | static void ne_block_output(struct net_device *dev, const int count, |
183 | const unsigned char *buf, const int start_page); |
184 | |
185 | |
186 | /* Probe for various non-shared-memory ethercards. |
187 | |
188 | NEx000-clone boards have a Station Address PROM (SAPROM) in the packet |
189 | buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of |
190 | the SAPROM, while other supposed NE2000 clones must be detected by their |
191 | SA prefix. |
192 | |
193 | Reading the SAPROM from a word-wide card with the 8390 set in byte-wide |
194 | mode results in doubled values, which can be detected and compensated for. |
195 | |
196 | The probe is also responsible for initializing the card and filling |
197 | in the 'dev' and 'ei_status' structures. |
198 | |
199 | We use the minimum memory size for some ethercard product lines, iff we can't |
200 | distinguish models. You can increase the packet buffer size by setting |
201 | PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are: |
202 | E1010 starts at 0x100 and ends at 0x2000. |
203 | E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory") |
204 | E2010 starts at 0x100 and ends at 0x4000. |
205 | E2010-x starts at 0x100 and ends at 0xffff. */ |
206 | |
207 | static int __init do_ne_probe(struct net_device *dev) |
208 | { |
209 | unsigned long base_addr = dev->base_addr; |
210 | #ifdef NEEDS_PORTLIST |
211 | int orig_irq = dev->irq; |
212 | #endif |
213 | |
214 | /* First check any supplied i/o locations. User knows best. <cough> */ |
215 | if (base_addr > 0x1ff) { /* Check a single specified location. */ |
216 | int ret = ne_probe1(dev, base_addr); |
217 | if (ret) |
218 | printk(KERN_WARNING "ne.c: No NE*000 card found at " |
219 | "i/o = %#lx\n", base_addr); |
220 | return ret; |
221 | } |
222 | else if (base_addr != 0) /* Don't probe at all. */ |
223 | return -ENXIO; |
224 | |
225 | /* Then look for any installed ISAPnP clones */ |
226 | if (isapnp_present() && (ne_probe_isapnp(dev) == 0)) |
227 | return 0; |
228 | |
229 | #ifdef NEEDS_PORTLIST |
230 | /* Last resort. The semi-risky ISA auto-probe. */ |
231 | for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) { |
232 | int ioaddr = netcard_portlist[base_addr]; |
233 | dev->irq = orig_irq; |
234 | if (ne_probe1(dev, ioaddr) == 0) |
235 | return 0; |
236 | } |
237 | #endif |
238 | |
239 | return -ENODEV; |
240 | } |
241 | |
242 | static int __init ne_probe_isapnp(struct net_device *dev) |
243 | { |
244 | int i; |
245 | |
246 | for (i = 0; isapnp_clone_list[i].vendor != 0; i++) { |
247 | struct pnp_dev *idev = NULL; |
248 | |
249 | while ((idev = pnp_find_dev(NULL, |
250 | isapnp_clone_list[i].vendor, |
251 | isapnp_clone_list[i].function, |
252 | idev))) { |
253 | /* Avoid already found cards from previous calls */ |
254 | if (pnp_device_attach(idev) < 0) |
255 | continue; |
256 | if (pnp_activate_dev(idev) < 0) { |
257 | pnp_device_detach(idev); |
258 | continue; |
259 | } |
260 | /* if no io and irq, search for next */ |
261 | if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) { |
262 | pnp_device_detach(idev); |
263 | continue; |
264 | } |
265 | /* found it */ |
266 | dev->base_addr = pnp_port_start(idev, 0); |
267 | dev->irq = pnp_irq(idev, 0); |
268 | printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n", |
269 | (char *) isapnp_clone_list[i].driver_data, |
270 | dev->base_addr, dev->irq); |
271 | if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */ |
272 | printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr); |
273 | pnp_device_detach(idev); |
274 | return -ENXIO; |
275 | } |
276 | ei_status.priv = (unsigned long)idev; |
277 | break; |
278 | } |
279 | if (!idev) |
280 | continue; |
281 | return 0; |
282 | } |
283 | |
284 | return -ENODEV; |
285 | } |
286 | |
287 | static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr) |
288 | { |
289 | int i; |
290 | unsigned char SA_prom[32]; |
291 | int wordlength = 2; |
292 | const char *name = NULL; |
293 | int start_page, stop_page; |
294 | int neX000, ctron, copam, bad_card; |
295 | int reg0, ret; |
296 | static unsigned version_printed; |
297 | |
298 | if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) |
299 | return -EBUSY; |
300 | |
301 | reg0 = inb_p(ioaddr); |
302 | if (reg0 == 0xFF) { |
303 | ret = -ENODEV; |
304 | goto err_out; |
305 | } |
306 | |
307 | /* Do a preliminary verification that we have a 8390. */ |
308 | { |
309 | int regd; |
310 | outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); |
311 | regd = inb_p(ioaddr + 0x0d); |
312 | outb_p(0xff, ioaddr + 0x0d); |
313 | outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); |
314 | inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ |
315 | if (inb_p(ioaddr + EN0_COUNTER0) != 0) { |
316 | outb_p(reg0, ioaddr); |
317 | outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */ |
318 | ret = -ENODEV; |
319 | goto err_out; |
320 | } |
321 | } |
322 | |
323 | if (ei_debug && version_printed++ == 0) |
324 | printk(KERN_INFO "%s%s", version1, version2); |
325 | |
326 | printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr); |
327 | |
328 | /* A user with a poor card that fails to ack the reset, or that |
329 | does not have a valid 0x57,0x57 signature can still use this |
330 | without having to recompile. Specifying an i/o address along |
331 | with an otherwise unused dev->mem_end value of "0xBAD" will |
332 | cause the driver to skip these parts of the probe. */ |
333 | |
334 | bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD)); |
335 | |
336 | /* Reset card. Who knows what dain-bramaged state it was left in. */ |
337 | |
338 | { |
339 | unsigned long reset_start_time = jiffies; |
340 | |
341 | /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ |
342 | outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); |
343 | |
344 | while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0) |
345 | if (time_after(jiffies, reset_start_time + 2*HZ/100)) { |
346 | if (bad_card) { |
347 | printk(" (warning: no reset ack)"); |
348 | break; |
349 | } else { |
350 | printk(" not found (no reset ack).\n"); |
351 | ret = -ENODEV; |
352 | goto err_out; |
353 | } |
354 | } |
355 | |
356 | outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */ |
357 | } |
358 | |
359 | /* Read the 16 bytes of station address PROM. |
360 | We must first initialize registers, similar to NS8390p_init(eifdev, 0). |
361 | We can't reliably read the SAPROM address without this. |
362 | (I learned the hard way!). */ |
363 | { |
364 | struct {unsigned char value, offset; } program_seq[] = |
365 | { |
366 | {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ |
367 | {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */ |
368 | {0x00, EN0_RCNTLO}, /* Clear the count regs. */ |
369 | {0x00, EN0_RCNTHI}, |
370 | {0x00, EN0_IMR}, /* Mask completion irq. */ |
371 | {0xFF, EN0_ISR}, |
372 | {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ |
373 | {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ |
374 | {32, EN0_RCNTLO}, |
375 | {0x00, EN0_RCNTHI}, |
376 | {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ |
377 | {0x00, EN0_RSARHI}, |
378 | {E8390_RREAD+E8390_START, E8390_CMD}, |
379 | }; |
380 | |
381 | for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
382 | outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); |
383 | |
384 | } |
385 | for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) { |
386 | SA_prom[i] = inb(ioaddr + NE_DATAPORT); |
387 | SA_prom[i+1] = inb(ioaddr + NE_DATAPORT); |
388 | if (SA_prom[i] != SA_prom[i+1]) |
389 | wordlength = 1; |
390 | } |
391 | |
392 | if (wordlength == 2) |
393 | { |
394 | for (i = 0; i < 16; i++) |
395 | SA_prom[i] = SA_prom[i+i]; |
396 | /* We must set the 8390 for word mode. */ |
397 | outb_p(DCR_VAL, ioaddr + EN0_DCFG); |
398 | start_page = NESM_START_PG; |
399 | |
400 | /* |
401 | * Realtek RTL8019AS datasheet says that the PSTOP register |
402 | * shouldn't exceed 0x60 in 8-bit mode. |
403 | * This chip can be identified by reading the signature from |
404 | * the remote byte count registers (otherwise write-only)... |
405 | */ |
406 | if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */ |
407 | inb(ioaddr + EN0_RCNTLO) == 0x50 && |
408 | inb(ioaddr + EN0_RCNTHI) == 0x70) |
409 | stop_page = 0x60; |
410 | else |
411 | stop_page = NESM_STOP_PG; |
412 | } else { |
413 | start_page = NE1SM_START_PG; |
414 | stop_page = NE1SM_STOP_PG; |
415 | } |
416 | |
417 | #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R) |
418 | neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57) |
419 | || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42)); |
420 | #else |
421 | neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57); |
422 | #endif |
423 | ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d); |
424 | copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00); |
425 | |
426 | /* Set up the rest of the parameters. */ |
427 | if (neX000 || bad_card || copam) { |
428 | name = (wordlength == 2) ? "NE2000" : "NE1000"; |
429 | } |
430 | else if (ctron) |
431 | { |
432 | name = (wordlength == 2) ? "Ctron-8" : "Ctron-16"; |
433 | start_page = 0x01; |
434 | stop_page = (wordlength == 2) ? 0x40 : 0x20; |
435 | } |
436 | else |
437 | { |
438 | #ifdef SUPPORT_NE_BAD_CLONES |
439 | /* Ack! Well, there might be a *bad* NE*000 clone there. |
440 | Check for total bogus addresses. */ |
441 | for (i = 0; bad_clone_list[i].name8; i++) |
442 | { |
443 | if (SA_prom[0] == bad_clone_list[i].SAprefix[0] && |
444 | SA_prom[1] == bad_clone_list[i].SAprefix[1] && |
445 | SA_prom[2] == bad_clone_list[i].SAprefix[2]) |
446 | { |
447 | if (wordlength == 2) |
448 | { |
449 | name = bad_clone_list[i].name16; |
450 | } else { |
451 | name = bad_clone_list[i].name8; |
452 | } |
453 | break; |
454 | } |
455 | } |
456 | if (bad_clone_list[i].name8 == NULL) |
457 | { |
458 | printk(" not found (invalid signature %2.2x %2.2x).\n", |
459 | SA_prom[14], SA_prom[15]); |
460 | ret = -ENXIO; |
461 | goto err_out; |
462 | } |
463 | #else |
464 | printk(" not found.\n"); |
465 | ret = -ENXIO; |
466 | goto err_out; |
467 | #endif |
468 | } |
469 | |
470 | if (dev->irq < 2) |
471 | { |
472 | unsigned long cookie = probe_irq_on(); |
473 | outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */ |
474 | outb_p(0x00, ioaddr + EN0_RCNTLO); |
475 | outb_p(0x00, ioaddr + EN0_RCNTHI); |
476 | outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */ |
477 | mdelay(10); /* wait 10ms for interrupt to propagate */ |
478 | outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */ |
479 | dev->irq = probe_irq_off(cookie); |
480 | if (ei_debug > 2) |
481 | printk(" autoirq is %d\n", dev->irq); |
482 | } else if (dev->irq == 2) |
483 | /* Fixup for users that don't know that IRQ 2 is really IRQ 9, |
484 | or don't know which one to set. */ |
485 | dev->irq = 9; |
486 | |
487 | if (! dev->irq) { |
488 | printk(" failed to detect IRQ line.\n"); |
489 | ret = -EAGAIN; |
490 | goto err_out; |
491 | } |
492 | |
493 | /* Snarf the interrupt now. There's no point in waiting since we cannot |
494 | share and the board will usually be enabled. */ |
495 | ret = request_irq(dev->irq, eip_interrupt, 0, name, dev); |
496 | if (ret) { |
497 | printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret); |
498 | goto err_out; |
499 | } |
500 | |
501 | dev->base_addr = ioaddr; |
502 | |
503 | #ifdef CONFIG_PLAT_MAPPI |
504 | outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, |
505 | ioaddr + E8390_CMD); /* 0x61 */ |
506 | for (i = 0 ; i < ETHER_ADDR_LEN ; i++) { |
507 | dev->dev_addr[i] = SA_prom[i] |
508 | = inb_p(ioaddr + EN1_PHYS_SHIFT(i)); |
509 | } |
510 | #else |
511 | for(i = 0; i < ETHER_ADDR_LEN; i++) { |
512 | dev->dev_addr[i] = SA_prom[i]; |
513 | } |
514 | #endif |
515 | |
516 | printk("%pM\n", dev->dev_addr); |
517 | |
518 | ei_status.name = name; |
519 | ei_status.tx_start_page = start_page; |
520 | ei_status.stop_page = stop_page; |
521 | |
522 | /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */ |
523 | ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01)); |
524 | |
525 | ei_status.rx_start_page = start_page + TX_PAGES; |
526 | #ifdef PACKETBUF_MEMSIZE |
527 | /* Allow the packet buffer size to be overridden by know-it-alls. */ |
528 | ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; |
529 | #endif |
530 | |
531 | ei_status.reset_8390 = &ne_reset_8390; |
532 | ei_status.block_input = &ne_block_input; |
533 | ei_status.block_output = &ne_block_output; |
534 | ei_status.get_8390_hdr = &ne_get_8390_hdr; |
535 | ei_status.priv = 0; |
536 | |
537 | dev->netdev_ops = &eip_netdev_ops; |
538 | NS8390p_init(dev, 0); |
539 | |
540 | ret = register_netdev(dev); |
541 | if (ret) |
542 | goto out_irq; |
543 | printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n", |
544 | dev->name, name, ioaddr, dev->irq); |
545 | return 0; |
546 | |
547 | out_irq: |
548 | free_irq(dev->irq, dev); |
549 | err_out: |
550 | release_region(ioaddr, NE_IO_EXTENT); |
551 | return ret; |
552 | } |
553 | |
554 | /* Hard reset the card. This used to pause for the same period that a |
555 | 8390 reset command required, but that shouldn't be necessary. */ |
556 | |
557 | static void ne_reset_8390(struct net_device *dev) |
558 | { |
559 | unsigned long reset_start_time = jiffies; |
560 | |
561 | if (ei_debug > 1) |
562 | printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies); |
563 | |
564 | /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ |
565 | outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); |
566 | |
567 | ei_status.txing = 0; |
568 | ei_status.dmaing = 0; |
569 | |
570 | /* This check _should_not_ be necessary, omit eventually. */ |
571 | while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) |
572 | if (time_after(jiffies, reset_start_time + 2*HZ/100)) { |
573 | printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name); |
574 | break; |
575 | } |
576 | outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ |
577 | } |
578 | |
579 | /* Grab the 8390 specific header. Similar to the block_input routine, but |
580 | we don't need to be concerned with ring wrap as the header will be at |
581 | the start of a page, so we optimize accordingly. */ |
582 | |
583 | static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) |
584 | { |
585 | int nic_base = dev->base_addr; |
586 | |
587 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ |
588 | |
589 | if (ei_status.dmaing) |
590 | { |
591 | printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr " |
592 | "[DMAstat:%d][irqlock:%d].\n", |
593 | dev->name, ei_status.dmaing, ei_status.irqlock); |
594 | return; |
595 | } |
596 | |
597 | ei_status.dmaing |= 0x01; |
598 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); |
599 | outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); |
600 | outb_p(0, nic_base + EN0_RCNTHI); |
601 | outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ |
602 | outb_p(ring_page, nic_base + EN0_RSARHI); |
603 | outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); |
604 | |
605 | if (ei_status.word16) |
606 | insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); |
607 | else |
608 | insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)); |
609 | |
610 | outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
611 | ei_status.dmaing &= ~0x01; |
612 | |
613 | le16_to_cpus(&hdr->count); |
614 | } |
615 | |
616 | /* Block input and output, similar to the Crynwr packet driver. If you |
617 | are porting to a new ethercard, look at the packet driver source for hints. |
618 | The NEx000 doesn't share the on-board packet memory -- you have to put |
619 | the packet out through the "remote DMA" dataport using outb. */ |
620 | |
621 | static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) |
622 | { |
623 | #ifdef NE_SANITY_CHECK |
624 | int xfer_count = count; |
625 | #endif |
626 | int nic_base = dev->base_addr; |
627 | char *buf = skb->data; |
628 | |
629 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ |
630 | if (ei_status.dmaing) |
631 | { |
632 | printk(KERN_EMERG "%s: DMAing conflict in ne_block_input " |
633 | "[DMAstat:%d][irqlock:%d].\n", |
634 | dev->name, ei_status.dmaing, ei_status.irqlock); |
635 | return; |
636 | } |
637 | ei_status.dmaing |= 0x01; |
638 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); |
639 | outb_p(count & 0xff, nic_base + EN0_RCNTLO); |
640 | outb_p(count >> 8, nic_base + EN0_RCNTHI); |
641 | outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); |
642 | outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); |
643 | outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); |
644 | if (ei_status.word16) |
645 | { |
646 | insw(NE_BASE + NE_DATAPORT,buf,count>>1); |
647 | if (count & 0x01) |
648 | { |
649 | buf[count-1] = inb(NE_BASE + NE_DATAPORT); |
650 | #ifdef NE_SANITY_CHECK |
651 | xfer_count++; |
652 | #endif |
653 | } |
654 | } else { |
655 | insb(NE_BASE + NE_DATAPORT, buf, count); |
656 | } |
657 | |
658 | #ifdef NE_SANITY_CHECK |
659 | /* This was for the ALPHA version only, but enough people have |
660 | been encountering problems so it is still here. If you see |
661 | this message you either 1) have a slightly incompatible clone |
662 | or 2) have noise/speed problems with your bus. */ |
663 | |
664 | if (ei_debug > 1) |
665 | { |
666 | /* DMA termination address check... */ |
667 | int addr, tries = 20; |
668 | do { |
669 | /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here |
670 | -- it's broken for Rx on some cards! */ |
671 | int high = inb_p(nic_base + EN0_RSARHI); |
672 | int low = inb_p(nic_base + EN0_RSARLO); |
673 | addr = (high << 8) + low; |
674 | if (((ring_offset + xfer_count) & 0xff) == low) |
675 | break; |
676 | } while (--tries > 0); |
677 | if (tries <= 0) |
678 | printk(KERN_WARNING "%s: RX transfer address mismatch," |
679 | "%#4.4x (expected) vs. %#4.4x (actual).\n", |
680 | dev->name, ring_offset + xfer_count, addr); |
681 | } |
682 | #endif |
683 | outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
684 | ei_status.dmaing &= ~0x01; |
685 | } |
686 | |
687 | static void ne_block_output(struct net_device *dev, int count, |
688 | const unsigned char *buf, const int start_page) |
689 | { |
690 | int nic_base = NE_BASE; |
691 | unsigned long dma_start; |
692 | #ifdef NE_SANITY_CHECK |
693 | int retries = 0; |
694 | #endif |
695 | |
696 | /* Round the count up for word writes. Do we need to do this? |
697 | What effect will an odd byte count have on the 8390? |
698 | I should check someday. */ |
699 | |
700 | if (ei_status.word16 && (count & 0x01)) |
701 | count++; |
702 | |
703 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ |
704 | if (ei_status.dmaing) |
705 | { |
706 | printk(KERN_EMERG "%s: DMAing conflict in ne_block_output." |
707 | "[DMAstat:%d][irqlock:%d]\n", |
708 | dev->name, ei_status.dmaing, ei_status.irqlock); |
709 | return; |
710 | } |
711 | ei_status.dmaing |= 0x01; |
712 | /* We should already be in page 0, but to be safe... */ |
713 | outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); |
714 | |
715 | #ifdef NE_SANITY_CHECK |
716 | retry: |
717 | #endif |
718 | |
719 | #ifdef NE8390_RW_BUGFIX |
720 | /* Handle the read-before-write bug the same way as the |
721 | Crynwr packet driver -- the NatSemi method doesn't work. |
722 | Actually this doesn't always work either, but if you have |
723 | problems with your NEx000 this is better than nothing! */ |
724 | |
725 | outb_p(0x42, nic_base + EN0_RCNTLO); |
726 | outb_p(0x00, nic_base + EN0_RCNTHI); |
727 | outb_p(0x42, nic_base + EN0_RSARLO); |
728 | outb_p(0x00, nic_base + EN0_RSARHI); |
729 | outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); |
730 | /* Make certain that the dummy read has occurred. */ |
731 | udelay(6); |
732 | #endif |
733 | |
734 | outb_p(ENISR_RDC, nic_base + EN0_ISR); |
735 | |
736 | /* Now the normal output. */ |
737 | outb_p(count & 0xff, nic_base + EN0_RCNTLO); |
738 | outb_p(count >> 8, nic_base + EN0_RCNTHI); |
739 | outb_p(0x00, nic_base + EN0_RSARLO); |
740 | outb_p(start_page, nic_base + EN0_RSARHI); |
741 | |
742 | outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD); |
743 | if (ei_status.word16) { |
744 | outsw(NE_BASE + NE_DATAPORT, buf, count>>1); |
745 | } else { |
746 | outsb(NE_BASE + NE_DATAPORT, buf, count); |
747 | } |
748 | |
749 | dma_start = jiffies; |
750 | |
751 | #ifdef NE_SANITY_CHECK |
752 | /* This was for the ALPHA version only, but enough people have |
753 | been encountering problems so it is still here. */ |
754 | |
755 | if (ei_debug > 1) |
756 | { |
757 | /* DMA termination address check... */ |
758 | int addr, tries = 20; |
759 | do { |
760 | int high = inb_p(nic_base + EN0_RSARHI); |
761 | int low = inb_p(nic_base + EN0_RSARLO); |
762 | addr = (high << 8) + low; |
763 | if ((start_page << 8) + count == addr) |
764 | break; |
765 | } while (--tries > 0); |
766 | |
767 | if (tries <= 0) |
768 | { |
769 | printk(KERN_WARNING "%s: Tx packet transfer address mismatch," |
770 | "%#4.4x (expected) vs. %#4.4x (actual).\n", |
771 | dev->name, (start_page << 8) + count, addr); |
772 | if (retries++ == 0) |
773 | goto retry; |
774 | } |
775 | } |
776 | #endif |
777 | |
778 | while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0) |
779 | if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */ |
780 | printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name); |
781 | ne_reset_8390(dev); |
782 | NS8390p_init(dev, 1); |
783 | break; |
784 | } |
785 | |
786 | outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
787 | ei_status.dmaing &= ~0x01; |
788 | return; |
789 | } |
790 | |
791 | static int __init ne_drv_probe(struct platform_device *pdev) |
792 | { |
793 | struct net_device *dev; |
794 | int err, this_dev = pdev->id; |
795 | struct resource *res; |
796 | |
797 | dev = alloc_eip_netdev(); |
798 | if (!dev) |
799 | return -ENOMEM; |
800 | |
801 | /* ne.c doesn't populate resources in platform_device, but |
802 | * rbtx4927_ne_init and rbtx4938_ne_init do register devices |
803 | * with resources. |
804 | */ |
805 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
806 | if (res) { |
807 | dev->base_addr = res->start; |
808 | dev->irq = platform_get_irq(pdev, 0); |
809 | } else { |
810 | if (this_dev < 0 || this_dev >= MAX_NE_CARDS) |
811 | return -EINVAL; |
812 | dev->base_addr = io[this_dev]; |
813 | dev->irq = irq[this_dev]; |
814 | dev->mem_end = bad[this_dev]; |
815 | } |
816 | err = do_ne_probe(dev); |
817 | if (err) { |
818 | free_netdev(dev); |
819 | return err; |
820 | } |
821 | platform_set_drvdata(pdev, dev); |
822 | |
823 | /* Update with any values found by probing, don't update if |
824 | * resources were specified. |
825 | */ |
826 | if (!res) { |
827 | io[this_dev] = dev->base_addr; |
828 | irq[this_dev] = dev->irq; |
829 | } |
830 | return 0; |
831 | } |
832 | |
833 | static int ne_drv_remove(struct platform_device *pdev) |
834 | { |
835 | struct net_device *dev = platform_get_drvdata(pdev); |
836 | |
837 | if (dev) { |
838 | struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; |
839 | netif_device_detach(dev); |
840 | unregister_netdev(dev); |
841 | if (idev) |
842 | pnp_device_detach(idev); |
843 | /* Careful ne_drv_remove can be called twice, once from |
844 | * the platform_driver.remove and again when the |
845 | * platform_device is being removed. |
846 | */ |
847 | ei_status.priv = 0; |
848 | free_irq(dev->irq, dev); |
849 | release_region(dev->base_addr, NE_IO_EXTENT); |
850 | free_netdev(dev); |
851 | platform_set_drvdata(pdev, NULL); |
852 | } |
853 | return 0; |
854 | } |
855 | |
856 | /* Remove unused devices or all if true. */ |
857 | static void ne_loop_rm_unreg(int all) |
858 | { |
859 | int this_dev; |
860 | struct platform_device *pdev; |
861 | for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { |
862 | pdev = pdev_ne[this_dev]; |
863 | /* No network device == unused */ |
864 | if (pdev && (!platform_get_drvdata(pdev) || all)) { |
865 | ne_drv_remove(pdev); |
866 | platform_device_unregister(pdev); |
867 | pdev_ne[this_dev] = NULL; |
868 | } |
869 | } |
870 | } |
871 | |
872 | #ifdef CONFIG_PM |
873 | static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state) |
874 | { |
875 | struct net_device *dev = platform_get_drvdata(pdev); |
876 | |
877 | if (netif_running(dev)) { |
878 | struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; |
879 | netif_device_detach(dev); |
880 | if (idev) |
881 | pnp_stop_dev(idev); |
882 | } |
883 | return 0; |
884 | } |
885 | |
886 | static int ne_drv_resume(struct platform_device *pdev) |
887 | { |
888 | struct net_device *dev = platform_get_drvdata(pdev); |
889 | |
890 | if (netif_running(dev)) { |
891 | struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; |
892 | if (idev) |
893 | pnp_start_dev(idev); |
894 | ne_reset_8390(dev); |
895 | NS8390p_init(dev, 1); |
896 | netif_device_attach(dev); |
897 | } |
898 | return 0; |
899 | } |
900 | #else |
901 | #define ne_drv_suspend NULL |
902 | #define ne_drv_resume NULL |
903 | #endif |
904 | |
905 | static struct platform_driver ne_driver = { |
906 | .remove = ne_drv_remove, |
907 | .suspend = ne_drv_suspend, |
908 | .resume = ne_drv_resume, |
909 | .driver = { |
910 | .name = DRV_NAME, |
911 | .owner = THIS_MODULE, |
912 | }, |
913 | }; |
914 | |
915 | static void __init ne_add_devices(void) |
916 | { |
917 | int this_dev; |
918 | struct platform_device *pdev; |
919 | |
920 | for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { |
921 | if (pdev_ne[this_dev]) |
922 | continue; |
923 | pdev = platform_device_register_simple( |
924 | DRV_NAME, this_dev, NULL, 0); |
925 | if (IS_ERR(pdev)) |
926 | continue; |
927 | pdev_ne[this_dev] = pdev; |
928 | } |
929 | } |
930 | |
931 | #ifdef MODULE |
932 | int __init init_module(void) |
933 | { |
934 | int retval; |
935 | ne_add_devices(); |
936 | retval = platform_driver_probe(&ne_driver, ne_drv_probe); |
937 | if (retval) { |
938 | if (io[0] == 0) |
939 | printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\"" |
940 | " value(s) for ISA cards.\n"); |
941 | ne_loop_rm_unreg(1); |
942 | return retval; |
943 | } |
944 | |
945 | /* Unregister unused platform_devices. */ |
946 | ne_loop_rm_unreg(0); |
947 | return retval; |
948 | } |
949 | #else /* MODULE */ |
950 | static int __init ne_init(void) |
951 | { |
952 | int retval = platform_driver_probe(&ne_driver, ne_drv_probe); |
953 | |
954 | /* Unregister unused platform_devices. */ |
955 | ne_loop_rm_unreg(0); |
956 | return retval; |
957 | } |
958 | module_init(ne_init); |
959 | |
960 | struct net_device * __init ne_probe(int unit) |
961 | { |
962 | int this_dev; |
963 | struct net_device *dev; |
964 | |
965 | /* Find an empty slot, that is no net_device and zero io port. */ |
966 | this_dev = 0; |
967 | while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) || |
968 | io[this_dev]) { |
969 | if (++this_dev == MAX_NE_CARDS) |
970 | return ERR_PTR(-ENOMEM); |
971 | } |
972 | |
973 | /* Get irq, io from kernel command line */ |
974 | dev = alloc_eip_netdev(); |
975 | if (!dev) |
976 | return ERR_PTR(-ENOMEM); |
977 | |
978 | sprintf(dev->name, "eth%d", unit); |
979 | netdev_boot_setup_check(dev); |
980 | |
981 | io[this_dev] = dev->base_addr; |
982 | irq[this_dev] = dev->irq; |
983 | bad[this_dev] = dev->mem_end; |
984 | |
985 | free_netdev(dev); |
986 | |
987 | ne_add_devices(); |
988 | |
989 | /* return the first device found */ |
990 | for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { |
991 | if (pdev_ne[this_dev]) { |
992 | dev = platform_get_drvdata(pdev_ne[this_dev]); |
993 | if (dev) |
994 | return dev; |
995 | } |
996 | } |
997 | |
998 | return ERR_PTR(-ENODEV); |
999 | } |
1000 | #endif /* MODULE */ |
1001 | |
1002 | static void __exit ne_exit(void) |
1003 | { |
1004 | platform_driver_unregister(&ne_driver); |
1005 | ne_loop_rm_unreg(1); |
1006 | } |
1007 | module_exit(ne_exit); |
1008 |
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