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1da177e4 LT |
1 | /* depca.c: A DIGITAL DEPCA & EtherWORKS ethernet driver for linux. |
2 | ||
3 | Written 1994, 1995 by David C. Davies. | |
4 | ||
5 | ||
6 | Copyright 1994 David C. Davies | |
6aa20a22 | 7 | and |
1da177e4 | 8 | United States Government |
6aa20a22 | 9 | (as represented by the Director, National Security Agency). |
1da177e4 LT |
10 | |
11 | Copyright 1995 Digital Equipment Corporation. | |
12 | ||
13 | ||
14 | This software may be used and distributed according to the terms of | |
15 | the GNU General Public License, incorporated herein by reference. | |
16 | ||
17 | This driver is written for the Digital Equipment Corporation series | |
18 | of DEPCA and EtherWORKS ethernet cards: | |
19 | ||
20 | DEPCA (the original) | |
21 | DE100 | |
22 | DE101 | |
23 | DE200 Turbo | |
24 | DE201 Turbo | |
25 | DE202 Turbo (TP BNC) | |
26 | DE210 | |
27 | DE422 (EISA) | |
28 | ||
29 | The driver has been tested on DE100, DE200 and DE202 cards in a | |
30 | relatively busy network. The DE422 has been tested a little. | |
31 | ||
32 | This driver will NOT work for the DE203, DE204 and DE205 series of | |
33 | cards, since they have a new custom ASIC in place of the AMD LANCE | |
34 | chip. See the 'ewrk3.c' driver in the Linux source tree for running | |
35 | those cards. | |
36 | ||
37 | I have benchmarked the driver with a DE100 at 595kB/s to (542kB/s from) | |
38 | a DECstation 5000/200. | |
39 | ||
40 | The author may be reached at davies@maniac.ultranet.com | |
41 | ||
42 | ========================================================================= | |
43 | ||
44 | The driver was originally based on the 'lance.c' driver from Donald | |
45 | Becker which is included with the standard driver distribution for | |
46 | linux. V0.4 is a complete re-write with only the kernel interface | |
47 | remaining from the original code. | |
48 | ||
49 | 1) Lance.c code in /linux/drivers/net/ | |
50 | 2) "Ethernet/IEEE 802.3 Family. 1992 World Network Data Book/Handbook", | |
51 | AMD, 1992 [(800) 222-9323]. | |
52 | 3) "Am79C90 CMOS Local Area Network Controller for Ethernet (C-LANCE)", | |
53 | AMD, Pub. #17881, May 1993. | |
54 | 4) "Am79C960 PCnet-ISA(tm), Single-Chip Ethernet Controller for ISA", | |
55 | AMD, Pub. #16907, May 1992 | |
56 | 5) "DEC EtherWORKS LC Ethernet Controller Owners Manual", | |
57 | Digital Equipment corporation, 1990, Pub. #EK-DE100-OM.003 | |
58 | 6) "DEC EtherWORKS Turbo Ethernet Controller Owners Manual", | |
59 | Digital Equipment corporation, 1990, Pub. #EK-DE200-OM.003 | |
60 | 7) "DEPCA Hardware Reference Manual", Pub. #EK-DEPCA-PR | |
61 | Digital Equipment Corporation, 1989 | |
62 | 8) "DEC EtherWORKS Turbo_(TP BNC) Ethernet Controller Owners Manual", | |
63 | Digital Equipment corporation, 1991, Pub. #EK-DE202-OM.001 | |
6aa20a22 | 64 | |
1da177e4 LT |
65 | |
66 | Peter Bauer's depca.c (V0.5) was referred to when debugging V0.1 of this | |
67 | driver. | |
68 | ||
69 | The original DEPCA card requires that the ethernet ROM address counter | |
70 | be enabled to count and has an 8 bit NICSR. The ROM counter enabling is | |
71 | only done when a 0x08 is read as the first address octet (to minimise | |
72 | the chances of writing over some other hardware's I/O register). The | |
73 | NICSR accesses have been changed to byte accesses for all the cards | |
74 | supported by this driver, since there is only one useful bit in the MSB | |
75 | (remote boot timeout) and it is not used. Also, there is a maximum of | |
76 | only 48kB network RAM for this card. My thanks to Torbjorn Lindh for | |
77 | help debugging all this (and holding my feet to the fire until I got it | |
78 | right). | |
79 | ||
80 | The DE200 series boards have on-board 64kB RAM for use as a shared | |
81 | memory network buffer. Only the DE100 cards make use of a 2kB buffer | |
82 | mode which has not been implemented in this driver (only the 32kB and | |
83 | 64kB modes are supported [16kB/48kB for the original DEPCA]). | |
84 | ||
85 | At the most only 2 DEPCA cards can be supported on the ISA bus because | |
86 | there is only provision for two I/O base addresses on each card (0x300 | |
87 | and 0x200). The I/O address is detected by searching for a byte sequence | |
88 | in the Ethernet station address PROM at the expected I/O address for the | |
89 | Ethernet PROM. The shared memory base address is 'autoprobed' by | |
90 | looking for the self test PROM and detecting the card name. When a | |
91 | second DEPCA is detected, information is placed in the base_addr | |
92 | variable of the next device structure (which is created if necessary), | |
93 | thus enabling ethif_probe initialization for the device. More than 2 | |
94 | EISA cards can be supported, but care will be needed assigning the | |
95 | shared memory to ensure that each slot has the correct IRQ, I/O address | |
96 | and shared memory address assigned. | |
97 | ||
98 | ************************************************************************ | |
99 | ||
100 | NOTE: If you are using two ISA DEPCAs, it is important that you assign | |
101 | the base memory addresses correctly. The driver autoprobes I/O 0x300 | |
102 | then 0x200. The base memory address for the first device must be less | |
103 | than that of the second so that the auto probe will correctly assign the | |
104 | I/O and memory addresses on the same card. I can't think of a way to do | |
105 | this unambiguously at the moment, since there is nothing on the cards to | |
106 | tie I/O and memory information together. | |
107 | ||
108 | I am unable to test 2 cards together for now, so this code is | |
109 | unchecked. All reports, good or bad, are welcome. | |
110 | ||
111 | ************************************************************************ | |
112 | ||
113 | The board IRQ setting must be at an unused IRQ which is auto-probed | |
114 | using Donald Becker's autoprobe routines. DEPCA and DE100 board IRQs are | |
115 | {2,3,4,5,7}, whereas the DE200 is at {5,9,10,11,15}. Note that IRQ2 is | |
116 | really IRQ9 in machines with 16 IRQ lines. | |
117 | ||
118 | No 16MB memory limitation should exist with this driver as DMA is not | |
119 | used and the common memory area is in low memory on the network card (my | |
120 | current system has 20MB and I've not had problems yet). | |
121 | ||
122 | The ability to load this driver as a loadable module has been added. To | |
123 | utilise this ability, you have to do <8 things: | |
124 | ||
125 | 0) have a copy of the loadable modules code installed on your system. | |
126 | 1) copy depca.c from the /linux/drivers/net directory to your favourite | |
127 | temporary directory. | |
128 | 2) if you wish, edit the source code near line 1530 to reflect the I/O | |
129 | address and IRQ you're using (see also 5). | |
130 | 3) compile depca.c, but include -DMODULE in the command line to ensure | |
131 | that the correct bits are compiled (see end of source code). | |
132 | 4) if you are wanting to add a new card, goto 5. Otherwise, recompile a | |
133 | kernel with the depca configuration turned off and reboot. | |
134 | 5) insmod depca.o [irq=7] [io=0x200] [mem=0xd0000] [adapter_name=DE100] | |
135 | [Alan Cox: Changed the code to allow command line irq/io assignments] | |
136 | [Dave Davies: Changed the code to allow command line mem/name | |
137 | assignments] | |
6aa20a22 JG |
138 | 6) run the net startup bits for your eth?? interface manually |
139 | (usually /etc/rc.inet[12] at boot time). | |
1da177e4 LT |
140 | 7) enjoy! |
141 | ||
142 | Note that autoprobing is not allowed in loadable modules - the system is | |
143 | already up and running and you're messing with interrupts. | |
144 | ||
6aa20a22 | 145 | To unload a module, turn off the associated interface |
1da177e4 LT |
146 | 'ifconfig eth?? down' then 'rmmod depca'. |
147 | ||
148 | To assign a base memory address for the shared memory when running as a | |
149 | loadable module, see 5 above. To include the adapter name (if you have | |
150 | no PROM but know the card name) also see 5 above. Note that this last | |
6aa20a22 | 151 | option will not work with kernel built-in depca's. |
1da177e4 LT |
152 | |
153 | The shared memory assignment for a loadable module makes sense to avoid | |
154 | the 'memory autoprobe' picking the wrong shared memory (for the case of | |
155 | 2 depca's in a PC). | |
156 | ||
157 | ************************************************************************ | |
158 | Support for MCA EtherWORKS cards added 11-3-98. | |
159 | Verified to work with up to 2 DE212 cards in a system (although not | |
6aa20a22 | 160 | fully stress-tested). |
1da177e4 LT |
161 | |
162 | Currently known bugs/limitations: | |
163 | ||
164 | Note: with the MCA stuff as a module, it trusts the MCA configuration, | |
165 | not the command line for IRQ and memory address. You can | |
166 | specify them if you want, but it will throw your values out. | |
167 | You still have to pass the IO address it was configured as | |
168 | though. | |
169 | ||
170 | ************************************************************************ | |
171 | TO DO: | |
172 | ------ | |
173 | ||
174 | ||
175 | Revision History | |
176 | ---------------- | |
177 | ||
178 | Version Date Description | |
6aa20a22 | 179 | |
1da177e4 LT |
180 | 0.1 25-jan-94 Initial writing. |
181 | 0.2 27-jan-94 Added LANCE TX hardware buffer chaining. | |
182 | 0.3 1-feb-94 Added multiple DEPCA support. | |
183 | 0.31 4-feb-94 Added DE202 recognition. | |
184 | 0.32 19-feb-94 Tidy up. Improve multi-DEPCA support. | |
185 | 0.33 25-feb-94 Fix DEPCA ethernet ROM counter enable. | |
186 | Add jabber packet fix from murf@perftech.com | |
187 | and becker@super.org | |
188 | 0.34 7-mar-94 Fix DEPCA max network memory RAM & NICSR access. | |
189 | 0.35 8-mar-94 Added DE201 recognition. Tidied up. | |
190 | 0.351 30-apr-94 Added EISA support. Added DE422 recognition. | |
191 | 0.36 16-may-94 DE422 fix released. | |
192 | 0.37 22-jul-94 Added MODULE support | |
6aa20a22 | 193 | 0.38 15-aug-94 Added DBR ROM switch in depca_close(). |
1da177e4 LT |
194 | Multi DEPCA bug fix. |
195 | 0.38axp 15-sep-94 Special version for Alpha AXP Linux V1.0. | |
196 | 0.381 12-dec-94 Added DE101 recognition, fix multicast bug. | |
197 | 0.382 9-feb-95 Fix recognition bug reported by <bkm@star.rl.ac.uk>. | |
198 | 0.383 22-feb-95 Fix for conflict with VESA SCSI reported by | |
199 | <stromain@alf.dec.com> | |
200 | 0.384 17-mar-95 Fix a ring full bug reported by <bkm@star.rl.ac.uk> | |
6aa20a22 | 201 | 0.385 3-apr-95 Fix a recognition bug reported by |
1da177e4 LT |
202 | <ryan.niemi@lastfrontier.com> |
203 | 0.386 21-apr-95 Fix the last fix...sorry, must be galloping senility | |
204 | 0.40 25-May-95 Rewrite for portability & updated. | |
205 | ALPHA support from <jestabro@amt.tay1.dec.com> | |
206 | 0.41 26-Jun-95 Added verify_area() calls in depca_ioctl() from | |
207 | suggestion by <heiko@colossus.escape.de> | |
6aa20a22 | 208 | 0.42 27-Dec-95 Add 'mem' shared memory assignment for loadable |
1da177e4 LT |
209 | modules. |
210 | Add 'adapter_name' for loadable modules when no PROM. | |
6aa20a22 | 211 | Both above from a suggestion by |
1da177e4 LT |
212 | <pchen@woodruffs121.residence.gatech.edu>. |
213 | Add new multicasting code. | |
214 | 0.421 22-Apr-96 Fix alloc_device() bug <jari@markkus2.fimr.fi> | |
215 | 0.422 29-Apr-96 Fix depca_hw_init() bug <jari@markkus2.fimr.fi> | |
216 | 0.423 7-Jun-96 Fix module load bug <kmg@barco.be> | |
217 | 0.43 16-Aug-96 Update alloc_device() to conform to de4x5.c | |
218 | 0.44 1-Sep-97 Fix *_probe() to test check_region() first - bug | |
219 | reported by <mmogilvi@elbert.uccs.edu> | |
220 | 0.45 3-Nov-98 Added support for MCA EtherWORKS (DE210/DE212) cards | |
6aa20a22 | 221 | by <tymm@computer.org> |
1da177e4 LT |
222 | 0.451 5-Nov-98 Fixed mca stuff cuz I'm a dummy. <tymm@computer.org> |
223 | 0.5 14-Nov-98 Re-spin for 2.1.x kernels. | |
224 | 0.51 27-Jun-99 Correct received packet length for CRC from | |
225 | report by <worm@dkik.dk> | |
226 | 0.52 16-Oct-00 Fixes for 2.3 io memory accesses | |
227 | Fix show-stopper (ints left masked) in depca_interrupt | |
228 | by <peterd@pnd-pc.demon.co.uk> | |
229 | 0.53 12-Jan-01 Release resources on failure, bss tidbits | |
230 | by acme@conectiva.com.br | |
231 | 0.54 08-Nov-01 use library crc32 functions | |
232 | by Matt_Domsch@dell.com | |
233 | 0.55 01-Mar-03 Use EISA/sysfs framework <maz@wild-wind.fr.eu.org> | |
234 | ||
235 | ========================================================================= | |
236 | */ | |
237 | ||
1da177e4 LT |
238 | #include <linux/module.h> |
239 | #include <linux/kernel.h> | |
d43c36dc | 240 | #include <linux/sched.h> |
1da177e4 LT |
241 | #include <linux/string.h> |
242 | #include <linux/errno.h> | |
243 | #include <linux/ioport.h> | |
244 | #include <linux/slab.h> | |
245 | #include <linux/interrupt.h> | |
246 | #include <linux/delay.h> | |
247 | #include <linux/init.h> | |
248 | #include <linux/crc32.h> | |
249 | #include <linux/netdevice.h> | |
250 | #include <linux/etherdevice.h> | |
251 | #include <linux/skbuff.h> | |
252 | #include <linux/time.h> | |
253 | #include <linux/types.h> | |
254 | #include <linux/unistd.h> | |
255 | #include <linux/ctype.h> | |
256 | #include <linux/moduleparam.h> | |
d052d1be | 257 | #include <linux/platform_device.h> |
1da177e4 LT |
258 | #include <linux/bitops.h> |
259 | ||
260 | #include <asm/uaccess.h> | |
261 | #include <asm/io.h> | |
262 | #include <asm/dma.h> | |
263 | ||
264 | #ifdef CONFIG_MCA | |
265 | #include <linux/mca.h> | |
266 | #endif | |
267 | ||
268 | #ifdef CONFIG_EISA | |
269 | #include <linux/eisa.h> | |
270 | #endif | |
271 | ||
272 | #include "depca.h" | |
273 | ||
274 | static char version[] __initdata = "depca.c:v0.53 2001/1/12 davies@maniac.ultranet.com\n"; | |
275 | ||
276 | #ifdef DEPCA_DEBUG | |
277 | static int depca_debug = DEPCA_DEBUG; | |
278 | #else | |
279 | static int depca_debug = 1; | |
280 | #endif | |
281 | ||
282 | #define DEPCA_NDA 0xffe0 /* No Device Address */ | |
283 | ||
284 | #define TX_TIMEOUT (1*HZ) | |
285 | ||
286 | /* | |
287 | ** Ethernet PROM defines | |
288 | */ | |
289 | #define PROBE_LENGTH 32 | |
290 | #define ETH_PROM_SIG 0xAA5500FFUL | |
291 | ||
292 | /* | |
293 | ** Set the number of Tx and Rx buffers. Ensure that the memory requested | |
294 | ** here is <= to the amount of shared memory set up by the board switches. | |
295 | ** The number of descriptors MUST BE A POWER OF 2. | |
296 | ** | |
297 | ** total_memory = NUM_RX_DESC*(8+RX_BUFF_SZ) + NUM_TX_DESC*(8+TX_BUFF_SZ) | |
298 | */ | |
299 | #define NUM_RX_DESC 8 /* Number of RX descriptors */ | |
300 | #define NUM_TX_DESC 8 /* Number of TX descriptors */ | |
301 | #define RX_BUFF_SZ 1536 /* Buffer size for each Rx buffer */ | |
302 | #define TX_BUFF_SZ 1536 /* Buffer size for each Tx buffer */ | |
303 | ||
304 | /* | |
305 | ** EISA bus defines | |
306 | */ | |
307 | #define DEPCA_EISA_IO_PORTS 0x0c00 /* I/O port base address, slot 0 */ | |
308 | ||
309 | /* | |
310 | ** ISA Bus defines | |
311 | */ | |
312 | #define DEPCA_RAM_BASE_ADDRESSES {0xc0000,0xd0000,0xe0000,0x00000} | |
313 | #define DEPCA_TOTAL_SIZE 0x10 | |
314 | ||
315 | static struct { | |
316 | u_long iobase; | |
317 | struct platform_device *device; | |
318 | } depca_io_ports[] = { | |
319 | { 0x300, NULL }, | |
320 | { 0x200, NULL }, | |
321 | { 0 , NULL }, | |
322 | }; | |
323 | ||
324 | /* | |
325 | ** Name <-> Adapter mapping | |
326 | */ | |
327 | #define DEPCA_SIGNATURE {"DEPCA",\ | |
328 | "DE100","DE101",\ | |
329 | "DE200","DE201","DE202",\ | |
330 | "DE210","DE212",\ | |
331 | "DE422",\ | |
332 | ""} | |
333 | ||
334 | static char* __initdata depca_signature[] = DEPCA_SIGNATURE; | |
335 | ||
336 | enum depca_type { | |
337 | DEPCA, de100, de101, de200, de201, de202, de210, de212, de422, unknown | |
338 | }; | |
339 | ||
340 | static char depca_string[] = "depca"; | |
341 | ||
342 | static int depca_device_remove (struct device *device); | |
343 | ||
344 | #ifdef CONFIG_EISA | |
345 | static struct eisa_device_id depca_eisa_ids[] = { | |
346 | { "DEC4220", de422 }, | |
347 | { "" } | |
348 | }; | |
349 | MODULE_DEVICE_TABLE(eisa, depca_eisa_ids); | |
350 | ||
351 | static int depca_eisa_probe (struct device *device); | |
352 | ||
353 | static struct eisa_driver depca_eisa_driver = { | |
354 | .id_table = depca_eisa_ids, | |
355 | .driver = { | |
356 | .name = depca_string, | |
357 | .probe = depca_eisa_probe, | |
358 | .remove = __devexit_p (depca_device_remove) | |
359 | } | |
360 | }; | |
361 | #endif | |
362 | ||
363 | #ifdef CONFIG_MCA | |
364 | /* | |
365 | ** Adapter ID for the MCA EtherWORKS DE210/212 adapter | |
366 | */ | |
367 | #define DE210_ID 0x628d | |
368 | #define DE212_ID 0x6def | |
369 | ||
370 | static short depca_mca_adapter_ids[] = { | |
371 | DE210_ID, | |
372 | DE212_ID, | |
373 | 0x0000 | |
374 | }; | |
375 | ||
376 | static char *depca_mca_adapter_name[] = { | |
377 | "DEC EtherWORKS MC Adapter (DE210)", | |
378 | "DEC EtherWORKS MC Adapter (DE212)", | |
379 | NULL | |
380 | }; | |
381 | ||
382 | static enum depca_type depca_mca_adapter_type[] = { | |
383 | de210, | |
384 | de212, | |
385 | 0 | |
386 | }; | |
387 | ||
388 | static int depca_mca_probe (struct device *); | |
389 | ||
390 | static struct mca_driver depca_mca_driver = { | |
391 | .id_table = depca_mca_adapter_ids, | |
392 | .driver = { | |
393 | .name = depca_string, | |
394 | .bus = &mca_bus_type, | |
395 | .probe = depca_mca_probe, | |
396 | .remove = __devexit_p(depca_device_remove), | |
397 | }, | |
398 | }; | |
399 | #endif | |
400 | ||
3ae5eaec | 401 | static int depca_isa_probe (struct platform_device *); |
1da177e4 | 402 | |
3ae5eaec RK |
403 | static int __devexit depca_isa_remove(struct platform_device *pdev) |
404 | { | |
405 | return depca_device_remove(&pdev->dev); | |
406 | } | |
407 | ||
408 | static struct platform_driver depca_isa_driver = { | |
1da177e4 | 409 | .probe = depca_isa_probe, |
3ae5eaec RK |
410 | .remove = __devexit_p(depca_isa_remove), |
411 | .driver = { | |
412 | .name = depca_string, | |
413 | }, | |
1da177e4 | 414 | }; |
6aa20a22 | 415 | |
1da177e4 LT |
416 | /* |
417 | ** Miscellaneous info... | |
418 | */ | |
419 | #define DEPCA_STRLEN 16 | |
420 | ||
421 | /* | |
422 | ** Memory Alignment. Each descriptor is 4 longwords long. To force a | |
423 | ** particular alignment on the TX descriptor, adjust DESC_SKIP_LEN and | |
424 | ** DESC_ALIGN. DEPCA_ALIGN aligns the start address of the private memory area | |
6aa20a22 | 425 | ** and hence the RX descriptor ring's first entry. |
1da177e4 LT |
426 | */ |
427 | #define DEPCA_ALIGN4 ((u_long)4 - 1) /* 1 longword align */ | |
428 | #define DEPCA_ALIGN8 ((u_long)8 - 1) /* 2 longword (quadword) align */ | |
429 | #define DEPCA_ALIGN DEPCA_ALIGN8 /* Keep the LANCE happy... */ | |
430 | ||
431 | /* | |
6aa20a22 | 432 | ** The DEPCA Rx and Tx ring descriptors. |
1da177e4 LT |
433 | */ |
434 | struct depca_rx_desc { | |
435 | volatile s32 base; | |
436 | s16 buf_length; /* This length is negative 2's complement! */ | |
437 | s16 msg_length; /* This length is "normal". */ | |
438 | }; | |
439 | ||
440 | struct depca_tx_desc { | |
441 | volatile s32 base; | |
442 | s16 length; /* This length is negative 2's complement! */ | |
443 | s16 misc; /* Errors and TDR info */ | |
444 | }; | |
445 | ||
446 | #define LA_MASK 0x0000ffff /* LANCE address mask for mapping network RAM | |
447 | to LANCE memory address space */ | |
448 | ||
449 | /* | |
450 | ** The Lance initialization block, described in databook, in common memory. | |
451 | */ | |
452 | struct depca_init { | |
453 | u16 mode; /* Mode register */ | |
454 | u8 phys_addr[ETH_ALEN]; /* Physical ethernet address */ | |
455 | u8 mcast_table[8]; /* Multicast Hash Table. */ | |
456 | u32 rx_ring; /* Rx ring base pointer & ring length */ | |
457 | u32 tx_ring; /* Tx ring base pointer & ring length */ | |
458 | }; | |
459 | ||
460 | #define DEPCA_PKT_STAT_SZ 16 | |
461 | #define DEPCA_PKT_BIN_SZ 128 /* Should be >=100 unless you | |
462 | increase DEPCA_PKT_STAT_SZ */ | |
463 | struct depca_private { | |
464 | char adapter_name[DEPCA_STRLEN]; /* /proc/ioports string */ | |
465 | enum depca_type adapter; /* Adapter type */ | |
466 | enum { | |
467 | DEPCA_BUS_MCA = 1, | |
468 | DEPCA_BUS_ISA, | |
469 | DEPCA_BUS_EISA, | |
470 | } depca_bus; /* type of bus */ | |
471 | struct depca_init init_block; /* Shadow Initialization block */ | |
472 | /* CPU address space fields */ | |
473 | struct depca_rx_desc __iomem *rx_ring; /* Pointer to start of RX descriptor ring */ | |
474 | struct depca_tx_desc __iomem *tx_ring; /* Pointer to start of TX descriptor ring */ | |
475 | void __iomem *rx_buff[NUM_RX_DESC]; /* CPU virt address of sh'd memory buffs */ | |
476 | void __iomem *tx_buff[NUM_TX_DESC]; /* CPU virt address of sh'd memory buffs */ | |
477 | void __iomem *sh_mem; /* CPU mapped virt address of device RAM */ | |
478 | u_long mem_start; /* Bus address of device RAM (before remap) */ | |
479 | u_long mem_len; /* device memory size */ | |
480 | /* Device address space fields */ | |
481 | u_long device_ram_start; /* Start of RAM in device addr space */ | |
482 | /* Offsets used in both address spaces */ | |
483 | u_long rx_ring_offset; /* Offset from start of RAM to rx_ring */ | |
484 | u_long tx_ring_offset; /* Offset from start of RAM to tx_ring */ | |
485 | u_long buffs_offset; /* LANCE Rx and Tx buffers start address. */ | |
486 | /* Kernel-only (not device) fields */ | |
487 | int rx_new, tx_new; /* The next free ring entry */ | |
488 | int rx_old, tx_old; /* The ring entries to be free()ed. */ | |
1da177e4 LT |
489 | spinlock_t lock; |
490 | struct { /* Private stats counters */ | |
491 | u32 bins[DEPCA_PKT_STAT_SZ]; | |
492 | u32 unicast; | |
493 | u32 multicast; | |
494 | u32 broadcast; | |
495 | u32 excessive_collisions; | |
496 | u32 tx_underruns; | |
497 | u32 excessive_underruns; | |
498 | } pktStats; | |
499 | int txRingMask; /* TX ring mask */ | |
500 | int rxRingMask; /* RX ring mask */ | |
501 | s32 rx_rlen; /* log2(rxRingMask+1) for the descriptors */ | |
502 | s32 tx_rlen; /* log2(txRingMask+1) for the descriptors */ | |
503 | }; | |
504 | ||
505 | /* | |
506 | ** The transmit ring full condition is described by the tx_old and tx_new | |
507 | ** pointers by: | |
508 | ** tx_old = tx_new Empty ring | |
509 | ** tx_old = tx_new+1 Full ring | |
510 | ** tx_old+txRingMask = tx_new Full ring (wrapped condition) | |
511 | */ | |
512 | #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ | |
513 | lp->tx_old+lp->txRingMask-lp->tx_new:\ | |
514 | lp->tx_old -lp->tx_new-1) | |
515 | ||
516 | /* | |
517 | ** Public Functions | |
518 | */ | |
519 | static int depca_open(struct net_device *dev); | |
61357325 SH |
520 | static netdev_tx_t depca_start_xmit(struct sk_buff *skb, |
521 | struct net_device *dev); | |
7d12e780 | 522 | static irqreturn_t depca_interrupt(int irq, void *dev_id); |
1da177e4 LT |
523 | static int depca_close(struct net_device *dev); |
524 | static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
525 | static void depca_tx_timeout(struct net_device *dev); | |
1da177e4 LT |
526 | static void set_multicast_list(struct net_device *dev); |
527 | ||
528 | /* | |
529 | ** Private functions | |
530 | */ | |
531 | static void depca_init_ring(struct net_device *dev); | |
532 | static int depca_rx(struct net_device *dev); | |
533 | static int depca_tx(struct net_device *dev); | |
534 | ||
535 | static void LoadCSRs(struct net_device *dev); | |
536 | static int InitRestartDepca(struct net_device *dev); | |
537 | static int DepcaSignature(char *name, u_long paddr); | |
538 | static int DevicePresent(u_long ioaddr); | |
539 | static int get_hw_addr(struct net_device *dev); | |
540 | static void SetMulticastFilter(struct net_device *dev); | |
541 | static int load_packet(struct net_device *dev, struct sk_buff *skb); | |
542 | static void depca_dbg_open(struct net_device *dev); | |
543 | ||
544 | static u_char de1xx_irq[] __initdata = { 2, 3, 4, 5, 7, 9, 0 }; | |
545 | static u_char de2xx_irq[] __initdata = { 5, 9, 10, 11, 15, 0 }; | |
546 | static u_char de422_irq[] __initdata = { 5, 9, 10, 11, 0 }; | |
547 | static u_char *depca_irq; | |
548 | ||
549 | static int irq; | |
550 | static int io; | |
551 | static char *adapter_name; | |
552 | static int mem; /* For loadable module assignment | |
553 | use insmod mem=0x????? .... */ | |
554 | module_param (irq, int, 0); | |
555 | module_param (io, int, 0); | |
556 | module_param (adapter_name, charp, 0); | |
557 | module_param (mem, int, 0); | |
558 | MODULE_PARM_DESC(irq, "DEPCA IRQ number"); | |
559 | MODULE_PARM_DESC(io, "DEPCA I/O base address"); | |
560 | MODULE_PARM_DESC(adapter_name, "DEPCA adapter name"); | |
561 | MODULE_PARM_DESC(mem, "DEPCA shared memory address"); | |
562 | MODULE_LICENSE("GPL"); | |
563 | ||
564 | /* | |
565 | ** Miscellaneous defines... | |
566 | */ | |
567 | #define STOP_DEPCA \ | |
568 | outw(CSR0, DEPCA_ADDR);\ | |
569 | outw(STOP, DEPCA_DATA) | |
570 | ||
361bc03e SH |
571 | static const struct net_device_ops depca_netdev_ops = { |
572 | .ndo_open = depca_open, | |
573 | .ndo_start_xmit = depca_start_xmit, | |
574 | .ndo_stop = depca_close, | |
575 | .ndo_set_multicast_list = set_multicast_list, | |
576 | .ndo_do_ioctl = depca_ioctl, | |
577 | .ndo_tx_timeout = depca_tx_timeout, | |
578 | .ndo_change_mtu = eth_change_mtu, | |
579 | .ndo_set_mac_address = eth_mac_addr, | |
580 | .ndo_validate_addr = eth_validate_addr, | |
581 | }; | |
582 | ||
1da177e4 LT |
583 | static int __init depca_hw_init (struct net_device *dev, struct device *device) |
584 | { | |
585 | struct depca_private *lp; | |
586 | int i, j, offset, netRAM, mem_len, status = 0; | |
587 | s16 nicsr; | |
588 | u_long ioaddr; | |
589 | u_long mem_start; | |
590 | ||
591 | /* | |
592 | * We are now supposed to enter this function with the | |
593 | * following fields filled with proper values : | |
594 | * | |
595 | * dev->base_addr | |
596 | * lp->mem_start | |
597 | * lp->depca_bus | |
598 | * lp->adapter | |
599 | * | |
600 | * dev->irq can be set if known from device configuration (on | |
601 | * MCA or EISA) or module option. Otherwise, it will be auto | |
602 | * detected. | |
603 | */ | |
604 | ||
605 | ioaddr = dev->base_addr; | |
6aa20a22 | 606 | |
1da177e4 LT |
607 | STOP_DEPCA; |
608 | ||
609 | nicsr = inb(DEPCA_NICSR); | |
610 | nicsr = ((nicsr & ~SHE & ~RBE & ~IEN) | IM); | |
611 | outb(nicsr, DEPCA_NICSR); | |
612 | ||
613 | if (inw(DEPCA_DATA) != STOP) { | |
614 | return -ENXIO; | |
615 | } | |
616 | ||
4cf1653a | 617 | lp = netdev_priv(dev); |
1da177e4 LT |
618 | mem_start = lp->mem_start; |
619 | ||
620 | if (!mem_start || lp->adapter < DEPCA || lp->adapter >=unknown) | |
621 | return -ENXIO; | |
622 | ||
c2313557 KS |
623 | printk("%s: %s at 0x%04lx", |
624 | dev_name(device), depca_signature[lp->adapter], ioaddr); | |
6aa20a22 | 625 | |
1da177e4 LT |
626 | switch (lp->depca_bus) { |
627 | #ifdef CONFIG_MCA | |
628 | case DEPCA_BUS_MCA: | |
629 | printk(" (MCA slot %d)", to_mca_device(device)->slot + 1); | |
630 | break; | |
631 | #endif | |
632 | ||
633 | #ifdef CONFIG_EISA | |
634 | case DEPCA_BUS_EISA: | |
635 | printk(" (EISA slot %d)", to_eisa_device(device)->slot); | |
636 | break; | |
637 | #endif | |
638 | ||
639 | case DEPCA_BUS_ISA: | |
640 | break; | |
641 | ||
642 | default: | |
643 | printk("Unknown DEPCA bus %d\n", lp->depca_bus); | |
644 | return -ENXIO; | |
645 | } | |
646 | ||
647 | printk(", h/w address "); | |
648 | status = get_hw_addr(dev); | |
e174961c | 649 | printk("%pM", dev->dev_addr); |
1da177e4 LT |
650 | if (status != 0) { |
651 | printk(" which has an Ethernet PROM CRC error.\n"); | |
652 | return -ENXIO; | |
653 | } | |
1da177e4 LT |
654 | |
655 | /* Set up the maximum amount of network RAM(kB) */ | |
656 | netRAM = ((lp->adapter != DEPCA) ? 64 : 48); | |
657 | if ((nicsr & _128KB) && (lp->adapter == de422)) | |
658 | netRAM = 128; | |
659 | ||
660 | /* Shared Memory Base Address */ | |
661 | if (nicsr & BUF) { | |
662 | nicsr &= ~BS; /* DEPCA RAM in top 32k */ | |
663 | netRAM -= 32; | |
664 | ||
665 | /* Only EISA/ISA needs start address to be re-computed */ | |
666 | if (lp->depca_bus != DEPCA_BUS_MCA) | |
667 | mem_start += 0x8000; | |
668 | } | |
6aa20a22 | 669 | |
1da177e4 LT |
670 | if ((mem_len = (NUM_RX_DESC * (sizeof(struct depca_rx_desc) + RX_BUFF_SZ) + NUM_TX_DESC * (sizeof(struct depca_tx_desc) + TX_BUFF_SZ) + sizeof(struct depca_init))) |
671 | > (netRAM << 10)) { | |
672 | printk(",\n requests %dkB RAM: only %dkB is available!\n", (mem_len >> 10), netRAM); | |
673 | return -ENXIO; | |
674 | } | |
675 | ||
676 | printk(",\n has %dkB RAM at 0x%.5lx", netRAM, mem_start); | |
677 | ||
678 | /* Enable the shadow RAM. */ | |
679 | if (lp->adapter != DEPCA) { | |
680 | nicsr |= SHE; | |
681 | outb(nicsr, DEPCA_NICSR); | |
682 | } | |
683 | ||
684 | spin_lock_init(&lp->lock); | |
685 | sprintf(lp->adapter_name, "%s (%s)", | |
c2313557 | 686 | depca_signature[lp->adapter], dev_name(device)); |
1da177e4 LT |
687 | status = -EBUSY; |
688 | ||
689 | /* Initialisation Block */ | |
690 | if (!request_mem_region (mem_start, mem_len, lp->adapter_name)) { | |
691 | printk(KERN_ERR "depca: cannot request ISA memory, aborting\n"); | |
692 | goto out_priv; | |
693 | } | |
6aa20a22 | 694 | |
1da177e4 LT |
695 | status = -EIO; |
696 | lp->sh_mem = ioremap(mem_start, mem_len); | |
697 | if (lp->sh_mem == NULL) { | |
698 | printk(KERN_ERR "depca: cannot remap ISA memory, aborting\n"); | |
699 | goto out1; | |
700 | } | |
701 | ||
702 | lp->mem_start = mem_start; | |
703 | lp->mem_len = mem_len; | |
704 | lp->device_ram_start = mem_start & LA_MASK; | |
705 | ||
706 | offset = 0; | |
707 | offset += sizeof(struct depca_init); | |
708 | ||
709 | /* Tx & Rx descriptors (aligned to a quadword boundary) */ | |
710 | offset = (offset + DEPCA_ALIGN) & ~DEPCA_ALIGN; | |
711 | lp->rx_ring = (struct depca_rx_desc __iomem *) (lp->sh_mem + offset); | |
712 | lp->rx_ring_offset = offset; | |
713 | ||
714 | offset += (sizeof(struct depca_rx_desc) * NUM_RX_DESC); | |
715 | lp->tx_ring = (struct depca_tx_desc __iomem *) (lp->sh_mem + offset); | |
716 | lp->tx_ring_offset = offset; | |
717 | ||
718 | offset += (sizeof(struct depca_tx_desc) * NUM_TX_DESC); | |
719 | ||
720 | lp->buffs_offset = offset; | |
721 | ||
722 | /* Finish initialising the ring information. */ | |
723 | lp->rxRingMask = NUM_RX_DESC - 1; | |
724 | lp->txRingMask = NUM_TX_DESC - 1; | |
725 | ||
726 | /* Calculate Tx/Rx RLEN size for the descriptors. */ | |
727 | for (i = 0, j = lp->rxRingMask; j > 0; i++) { | |
728 | j >>= 1; | |
729 | } | |
730 | lp->rx_rlen = (s32) (i << 29); | |
731 | for (i = 0, j = lp->txRingMask; j > 0; i++) { | |
732 | j >>= 1; | |
733 | } | |
734 | lp->tx_rlen = (s32) (i << 29); | |
735 | ||
736 | /* Load the initialisation block */ | |
737 | depca_init_ring(dev); | |
738 | ||
739 | /* Initialise the control and status registers */ | |
740 | LoadCSRs(dev); | |
741 | ||
742 | /* Enable DEPCA board interrupts for autoprobing */ | |
743 | nicsr = ((nicsr & ~IM) | IEN); | |
744 | outb(nicsr, DEPCA_NICSR); | |
745 | ||
746 | /* To auto-IRQ we enable the initialization-done and DMA err, | |
747 | interrupts. For now we will always get a DMA error. */ | |
748 | if (dev->irq < 2) { | |
749 | unsigned char irqnum; | |
750 | unsigned long irq_mask, delay; | |
751 | ||
752 | irq_mask = probe_irq_on(); | |
753 | ||
754 | /* Assign the correct irq list */ | |
755 | switch (lp->adapter) { | |
756 | case DEPCA: | |
757 | case de100: | |
758 | case de101: | |
759 | depca_irq = de1xx_irq; | |
760 | break; | |
761 | case de200: | |
762 | case de201: | |
763 | case de202: | |
764 | case de210: | |
765 | case de212: | |
766 | depca_irq = de2xx_irq; | |
767 | break; | |
768 | case de422: | |
769 | depca_irq = de422_irq; | |
770 | break; | |
771 | ||
772 | default: | |
773 | break; /* Not reached */ | |
774 | } | |
775 | ||
776 | /* Trigger an initialization just for the interrupt. */ | |
777 | outw(INEA | INIT, DEPCA_DATA); | |
778 | ||
779 | delay = jiffies + HZ/50; | |
780 | while (time_before(jiffies, delay)) | |
781 | yield(); | |
782 | ||
783 | irqnum = probe_irq_off(irq_mask); | |
784 | ||
785 | status = -ENXIO; | |
786 | if (!irqnum) { | |
787 | printk(" and failed to detect IRQ line.\n"); | |
788 | goto out2; | |
789 | } else { | |
790 | for (dev->irq = 0, i = 0; (depca_irq[i]) && (!dev->irq); i++) | |
791 | if (irqnum == depca_irq[i]) { | |
792 | dev->irq = irqnum; | |
793 | printk(" and uses IRQ%d.\n", dev->irq); | |
794 | } | |
795 | ||
796 | if (!dev->irq) { | |
797 | printk(" but incorrect IRQ line detected.\n"); | |
798 | goto out2; | |
799 | } | |
800 | } | |
801 | } else { | |
802 | printk(" and assigned IRQ%d.\n", dev->irq); | |
803 | } | |
804 | ||
805 | if (depca_debug > 1) { | |
806 | printk(version); | |
807 | } | |
808 | ||
809 | /* The DEPCA-specific entries in the device structure. */ | |
361bc03e | 810 | dev->netdev_ops = &depca_netdev_ops; |
1da177e4 LT |
811 | dev->watchdog_timeo = TX_TIMEOUT; |
812 | ||
813 | dev->mem_start = 0; | |
814 | ||
1aec5bdf | 815 | dev_set_drvdata(device, dev); |
1da177e4 | 816 | SET_NETDEV_DEV (dev, device); |
6aa20a22 | 817 | |
1da177e4 LT |
818 | status = register_netdev(dev); |
819 | if (status == 0) | |
820 | return 0; | |
821 | out2: | |
822 | iounmap(lp->sh_mem); | |
823 | out1: | |
824 | release_mem_region (mem_start, mem_len); | |
825 | out_priv: | |
826 | return status; | |
827 | } | |
6aa20a22 | 828 | |
1da177e4 LT |
829 | |
830 | static int depca_open(struct net_device *dev) | |
831 | { | |
4cf1653a | 832 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
833 | u_long ioaddr = dev->base_addr; |
834 | s16 nicsr; | |
835 | int status = 0; | |
836 | ||
837 | STOP_DEPCA; | |
838 | nicsr = inb(DEPCA_NICSR); | |
839 | ||
840 | /* Make sure the shadow RAM is enabled */ | |
841 | if (lp->adapter != DEPCA) { | |
842 | nicsr |= SHE; | |
843 | outb(nicsr, DEPCA_NICSR); | |
844 | } | |
845 | ||
846 | /* Re-initialize the DEPCA... */ | |
847 | depca_init_ring(dev); | |
848 | LoadCSRs(dev); | |
849 | ||
850 | depca_dbg_open(dev); | |
851 | ||
a0607fd3 | 852 | if (request_irq(dev->irq, depca_interrupt, 0, lp->adapter_name, dev)) { |
1da177e4 LT |
853 | printk("depca_open(): Requested IRQ%d is busy\n", dev->irq); |
854 | status = -EAGAIN; | |
855 | } else { | |
856 | ||
857 | /* Enable DEPCA board interrupts and turn off LED */ | |
858 | nicsr = ((nicsr & ~IM & ~LED) | IEN); | |
859 | outb(nicsr, DEPCA_NICSR); | |
860 | outw(CSR0, DEPCA_ADDR); | |
861 | ||
862 | netif_start_queue(dev); | |
863 | ||
864 | status = InitRestartDepca(dev); | |
865 | ||
866 | if (depca_debug > 1) { | |
867 | printk("CSR0: 0x%4.4x\n", inw(DEPCA_DATA)); | |
868 | printk("nicsr: 0x%02x\n", inb(DEPCA_NICSR)); | |
869 | } | |
870 | } | |
871 | return status; | |
872 | } | |
873 | ||
874 | /* Initialize the lance Rx and Tx descriptor rings. */ | |
875 | static void depca_init_ring(struct net_device *dev) | |
876 | { | |
4cf1653a | 877 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
878 | u_int i; |
879 | u_long offset; | |
880 | ||
881 | /* Lock out other processes whilst setting up the hardware */ | |
882 | netif_stop_queue(dev); | |
883 | ||
884 | lp->rx_new = lp->tx_new = 0; | |
885 | lp->rx_old = lp->tx_old = 0; | |
886 | ||
887 | /* Initialize the base address and length of each buffer in the ring */ | |
888 | for (i = 0; i <= lp->rxRingMask; i++) { | |
889 | offset = lp->buffs_offset + i * RX_BUFF_SZ; | |
890 | writel((lp->device_ram_start + offset) | R_OWN, &lp->rx_ring[i].base); | |
891 | writew(-RX_BUFF_SZ, &lp->rx_ring[i].buf_length); | |
892 | lp->rx_buff[i] = lp->sh_mem + offset; | |
893 | } | |
894 | ||
895 | for (i = 0; i <= lp->txRingMask; i++) { | |
896 | offset = lp->buffs_offset + (i + lp->rxRingMask + 1) * TX_BUFF_SZ; | |
897 | writel((lp->device_ram_start + offset) & 0x00ffffff, &lp->tx_ring[i].base); | |
898 | lp->tx_buff[i] = lp->sh_mem + offset; | |
899 | } | |
900 | ||
901 | /* Set up the initialization block */ | |
902 | lp->init_block.rx_ring = (lp->device_ram_start + lp->rx_ring_offset) | lp->rx_rlen; | |
903 | lp->init_block.tx_ring = (lp->device_ram_start + lp->tx_ring_offset) | lp->tx_rlen; | |
904 | ||
905 | SetMulticastFilter(dev); | |
906 | ||
907 | for (i = 0; i < ETH_ALEN; i++) { | |
908 | lp->init_block.phys_addr[i] = dev->dev_addr[i]; | |
909 | } | |
910 | ||
911 | lp->init_block.mode = 0x0000; /* Enable the Tx and Rx */ | |
912 | } | |
913 | ||
914 | ||
915 | static void depca_tx_timeout(struct net_device *dev) | |
916 | { | |
917 | u_long ioaddr = dev->base_addr; | |
918 | ||
919 | printk("%s: transmit timed out, status %04x, resetting.\n", dev->name, inw(DEPCA_DATA)); | |
920 | ||
921 | STOP_DEPCA; | |
922 | depca_init_ring(dev); | |
923 | LoadCSRs(dev); | |
1ae5dc34 | 924 | dev->trans_start = jiffies; /* prevent tx timeout */ |
1da177e4 LT |
925 | netif_wake_queue(dev); |
926 | InitRestartDepca(dev); | |
927 | } | |
928 | ||
929 | ||
6aa20a22 JG |
930 | /* |
931 | ** Writes a socket buffer to TX descriptor ring and starts transmission | |
1da177e4 | 932 | */ |
61357325 SH |
933 | static netdev_tx_t depca_start_xmit(struct sk_buff *skb, |
934 | struct net_device *dev) | |
1da177e4 | 935 | { |
4cf1653a | 936 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
937 | u_long ioaddr = dev->base_addr; |
938 | int status = 0; | |
939 | ||
940 | /* Transmitter timeout, serious problems. */ | |
941 | if (skb->len < 1) | |
942 | goto out; | |
943 | ||
5b057c6b HX |
944 | if (skb_padto(skb, ETH_ZLEN)) |
945 | goto out; | |
6aa20a22 | 946 | |
1da177e4 LT |
947 | netif_stop_queue(dev); |
948 | ||
949 | if (TX_BUFFS_AVAIL) { /* Fill in a Tx ring entry */ | |
950 | status = load_packet(dev, skb); | |
951 | ||
952 | if (!status) { | |
953 | /* Trigger an immediate send demand. */ | |
954 | outw(CSR0, DEPCA_ADDR); | |
955 | outw(INEA | TDMD, DEPCA_DATA); | |
956 | ||
1da177e4 LT |
957 | dev_kfree_skb(skb); |
958 | } | |
959 | if (TX_BUFFS_AVAIL) | |
960 | netif_start_queue(dev); | |
961 | } else | |
5b548140 | 962 | status = NETDEV_TX_LOCKED; |
1da177e4 LT |
963 | |
964 | out: | |
965 | return status; | |
966 | } | |
967 | ||
968 | /* | |
6aa20a22 | 969 | ** The DEPCA interrupt handler. |
1da177e4 | 970 | */ |
7d12e780 | 971 | static irqreturn_t depca_interrupt(int irq, void *dev_id) |
1da177e4 LT |
972 | { |
973 | struct net_device *dev = dev_id; | |
974 | struct depca_private *lp; | |
975 | s16 csr0, nicsr; | |
976 | u_long ioaddr; | |
977 | ||
978 | if (dev == NULL) { | |
979 | printk("depca_interrupt(): irq %d for unknown device.\n", irq); | |
980 | return IRQ_NONE; | |
981 | } | |
982 | ||
4cf1653a | 983 | lp = netdev_priv(dev); |
1da177e4 LT |
984 | ioaddr = dev->base_addr; |
985 | ||
986 | spin_lock(&lp->lock); | |
987 | ||
988 | /* mask the DEPCA board interrupts and turn on the LED */ | |
989 | nicsr = inb(DEPCA_NICSR); | |
990 | nicsr |= (IM | LED); | |
991 | outb(nicsr, DEPCA_NICSR); | |
992 | ||
993 | outw(CSR0, DEPCA_ADDR); | |
994 | csr0 = inw(DEPCA_DATA); | |
995 | ||
996 | /* Acknowledge all of the current interrupt sources ASAP. */ | |
997 | outw(csr0 & INTE, DEPCA_DATA); | |
998 | ||
999 | if (csr0 & RINT) /* Rx interrupt (packet arrived) */ | |
1000 | depca_rx(dev); | |
1001 | ||
1002 | if (csr0 & TINT) /* Tx interrupt (packet sent) */ | |
1003 | depca_tx(dev); | |
1004 | ||
1005 | /* Any resources available? */ | |
1006 | if ((TX_BUFFS_AVAIL >= 0) && netif_queue_stopped(dev)) { | |
1007 | netif_wake_queue(dev); | |
1008 | } | |
1009 | ||
1010 | /* Unmask the DEPCA board interrupts and turn off the LED */ | |
1011 | nicsr = (nicsr & ~IM & ~LED); | |
1012 | outb(nicsr, DEPCA_NICSR); | |
1013 | ||
1014 | spin_unlock(&lp->lock); | |
1015 | return IRQ_HANDLED; | |
1016 | } | |
1017 | ||
1018 | /* Called with lp->lock held */ | |
1019 | static int depca_rx(struct net_device *dev) | |
1020 | { | |
4cf1653a | 1021 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
1022 | int i, entry; |
1023 | s32 status; | |
1024 | ||
1025 | for (entry = lp->rx_new; !(readl(&lp->rx_ring[entry].base) & R_OWN); entry = lp->rx_new) { | |
1026 | status = readl(&lp->rx_ring[entry].base) >> 16; | |
1027 | if (status & R_STP) { /* Remember start of frame */ | |
1028 | lp->rx_old = entry; | |
1029 | } | |
1030 | if (status & R_ENP) { /* Valid frame status */ | |
1031 | if (status & R_ERR) { /* There was an error. */ | |
09f75cd7 | 1032 | dev->stats.rx_errors++; /* Update the error stats. */ |
1da177e4 | 1033 | if (status & R_FRAM) |
09f75cd7 | 1034 | dev->stats.rx_frame_errors++; |
1da177e4 | 1035 | if (status & R_OFLO) |
09f75cd7 | 1036 | dev->stats.rx_over_errors++; |
1da177e4 | 1037 | if (status & R_CRC) |
09f75cd7 | 1038 | dev->stats.rx_crc_errors++; |
1da177e4 | 1039 | if (status & R_BUFF) |
09f75cd7 | 1040 | dev->stats.rx_fifo_errors++; |
1da177e4 LT |
1041 | } else { |
1042 | short len, pkt_len = readw(&lp->rx_ring[entry].msg_length) - 4; | |
1043 | struct sk_buff *skb; | |
1044 | ||
1045 | skb = dev_alloc_skb(pkt_len + 2); | |
1046 | if (skb != NULL) { | |
1047 | unsigned char *buf; | |
1048 | skb_reserve(skb, 2); /* 16 byte align the IP header */ | |
1049 | buf = skb_put(skb, pkt_len); | |
1da177e4 LT |
1050 | if (entry < lp->rx_old) { /* Wrapped buffer */ |
1051 | len = (lp->rxRingMask - lp->rx_old + 1) * RX_BUFF_SZ; | |
1052 | memcpy_fromio(buf, lp->rx_buff[lp->rx_old], len); | |
1053 | memcpy_fromio(buf + len, lp->rx_buff[0], pkt_len - len); | |
1054 | } else { /* Linear buffer */ | |
1055 | memcpy_fromio(buf, lp->rx_buff[lp->rx_old], pkt_len); | |
1056 | } | |
1057 | ||
6aa20a22 JG |
1058 | /* |
1059 | ** Notify the upper protocol layers that there is another | |
1da177e4 LT |
1060 | ** packet to handle |
1061 | */ | |
1062 | skb->protocol = eth_type_trans(skb, dev); | |
1063 | netif_rx(skb); | |
1064 | ||
1065 | /* | |
1066 | ** Update stats | |
1067 | */ | |
09f75cd7 JG |
1068 | dev->stats.rx_packets++; |
1069 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
1070 | for (i = 1; i < DEPCA_PKT_STAT_SZ - 1; i++) { |
1071 | if (pkt_len < (i * DEPCA_PKT_BIN_SZ)) { | |
1072 | lp->pktStats.bins[i]++; | |
1073 | i = DEPCA_PKT_STAT_SZ; | |
1074 | } | |
1075 | } | |
1076 | if (buf[0] & 0x01) { /* Multicast/Broadcast */ | |
1077 | if ((*(s16 *) & buf[0] == -1) && (*(s16 *) & buf[2] == -1) && (*(s16 *) & buf[4] == -1)) { | |
1078 | lp->pktStats.broadcast++; | |
1079 | } else { | |
1080 | lp->pktStats.multicast++; | |
1081 | } | |
1082 | } else if ((*(s16 *) & buf[0] == *(s16 *) & dev->dev_addr[0]) && (*(s16 *) & buf[2] == *(s16 *) & dev->dev_addr[2]) && (*(s16 *) & buf[4] == *(s16 *) & dev->dev_addr[4])) { | |
1083 | lp->pktStats.unicast++; | |
1084 | } | |
1085 | ||
1086 | lp->pktStats.bins[0]++; /* Duplicates stats.rx_packets */ | |
1087 | if (lp->pktStats.bins[0] == 0) { /* Reset counters */ | |
1088 | memset((char *) &lp->pktStats, 0, sizeof(lp->pktStats)); | |
1089 | } | |
1090 | } else { | |
1091 | printk("%s: Memory squeeze, deferring packet.\n", dev->name); | |
09f75cd7 | 1092 | dev->stats.rx_dropped++; /* Really, deferred. */ |
1da177e4 LT |
1093 | break; |
1094 | } | |
1095 | } | |
1096 | /* Change buffer ownership for this last frame, back to the adapter */ | |
f97f3057 | 1097 | for (; lp->rx_old != entry; lp->rx_old = (lp->rx_old + 1) & lp->rxRingMask) { |
1da177e4 LT |
1098 | writel(readl(&lp->rx_ring[lp->rx_old].base) | R_OWN, &lp->rx_ring[lp->rx_old].base); |
1099 | } | |
1100 | writel(readl(&lp->rx_ring[entry].base) | R_OWN, &lp->rx_ring[entry].base); | |
1101 | } | |
1102 | ||
1103 | /* | |
1104 | ** Update entry information | |
1105 | */ | |
f97f3057 | 1106 | lp->rx_new = (lp->rx_new + 1) & lp->rxRingMask; |
1da177e4 LT |
1107 | } |
1108 | ||
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | /* | |
1113 | ** Buffer sent - check for buffer errors. | |
1114 | ** Called with lp->lock held | |
1115 | */ | |
1116 | static int depca_tx(struct net_device *dev) | |
1117 | { | |
4cf1653a | 1118 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
1119 | int entry; |
1120 | s32 status; | |
1121 | u_long ioaddr = dev->base_addr; | |
1122 | ||
1123 | for (entry = lp->tx_old; entry != lp->tx_new; entry = lp->tx_old) { | |
1124 | status = readl(&lp->tx_ring[entry].base) >> 16; | |
1125 | ||
1126 | if (status < 0) { /* Packet not yet sent! */ | |
1127 | break; | |
1128 | } else if (status & T_ERR) { /* An error occurred. */ | |
1129 | status = readl(&lp->tx_ring[entry].misc); | |
09f75cd7 | 1130 | dev->stats.tx_errors++; |
1da177e4 | 1131 | if (status & TMD3_RTRY) |
09f75cd7 | 1132 | dev->stats.tx_aborted_errors++; |
1da177e4 | 1133 | if (status & TMD3_LCAR) |
09f75cd7 | 1134 | dev->stats.tx_carrier_errors++; |
1da177e4 | 1135 | if (status & TMD3_LCOL) |
09f75cd7 | 1136 | dev->stats.tx_window_errors++; |
1da177e4 | 1137 | if (status & TMD3_UFLO) |
09f75cd7 | 1138 | dev->stats.tx_fifo_errors++; |
1da177e4 LT |
1139 | if (status & (TMD3_BUFF | TMD3_UFLO)) { |
1140 | /* Trigger an immediate send demand. */ | |
1141 | outw(CSR0, DEPCA_ADDR); | |
1142 | outw(INEA | TDMD, DEPCA_DATA); | |
1143 | } | |
1144 | } else if (status & (T_MORE | T_ONE)) { | |
09f75cd7 | 1145 | dev->stats.collisions++; |
1da177e4 | 1146 | } else { |
09f75cd7 | 1147 | dev->stats.tx_packets++; |
1da177e4 LT |
1148 | } |
1149 | ||
1150 | /* Update all the pointers */ | |
f97f3057 | 1151 | lp->tx_old = (lp->tx_old + 1) & lp->txRingMask; |
1da177e4 LT |
1152 | } |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | static int depca_close(struct net_device *dev) | |
1158 | { | |
4cf1653a | 1159 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
1160 | s16 nicsr; |
1161 | u_long ioaddr = dev->base_addr; | |
1162 | ||
1163 | netif_stop_queue(dev); | |
1164 | ||
1165 | outw(CSR0, DEPCA_ADDR); | |
1166 | ||
1167 | if (depca_debug > 1) { | |
1168 | printk("%s: Shutting down ethercard, status was %2.2x.\n", dev->name, inw(DEPCA_DATA)); | |
1169 | } | |
1170 | ||
6aa20a22 | 1171 | /* |
1da177e4 | 1172 | ** We stop the DEPCA here -- it occasionally polls |
6aa20a22 | 1173 | ** memory if we don't. |
1da177e4 LT |
1174 | */ |
1175 | outw(STOP, DEPCA_DATA); | |
1176 | ||
1177 | /* | |
1178 | ** Give back the ROM in case the user wants to go to DOS | |
1179 | */ | |
1180 | if (lp->adapter != DEPCA) { | |
1181 | nicsr = inb(DEPCA_NICSR); | |
1182 | nicsr &= ~SHE; | |
1183 | outb(nicsr, DEPCA_NICSR); | |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | ** Free the associated irq | |
1188 | */ | |
1189 | free_irq(dev->irq, dev); | |
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | static void LoadCSRs(struct net_device *dev) | |
1194 | { | |
4cf1653a | 1195 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
1196 | u_long ioaddr = dev->base_addr; |
1197 | ||
1198 | outw(CSR1, DEPCA_ADDR); /* initialisation block address LSW */ | |
1199 | outw((u16) lp->device_ram_start, DEPCA_DATA); | |
1200 | outw(CSR2, DEPCA_ADDR); /* initialisation block address MSW */ | |
1201 | outw((u16) (lp->device_ram_start >> 16), DEPCA_DATA); | |
1202 | outw(CSR3, DEPCA_ADDR); /* ALE control */ | |
1203 | outw(ACON, DEPCA_DATA); | |
1204 | ||
1205 | outw(CSR0, DEPCA_ADDR); /* Point back to CSR0 */ | |
1da177e4 LT |
1206 | } |
1207 | ||
1208 | static int InitRestartDepca(struct net_device *dev) | |
1209 | { | |
4cf1653a | 1210 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
1211 | u_long ioaddr = dev->base_addr; |
1212 | int i, status = 0; | |
1213 | ||
1214 | /* Copy the shadow init_block to shared memory */ | |
1215 | memcpy_toio(lp->sh_mem, &lp->init_block, sizeof(struct depca_init)); | |
1216 | ||
1217 | outw(CSR0, DEPCA_ADDR); /* point back to CSR0 */ | |
1218 | outw(INIT, DEPCA_DATA); /* initialize DEPCA */ | |
1219 | ||
1220 | /* wait for lance to complete initialisation */ | |
1221 | for (i = 0; (i < 100) && !(inw(DEPCA_DATA) & IDON); i++); | |
1222 | ||
1223 | if (i != 100) { | |
1224 | /* clear IDON by writing a "1", enable interrupts and start lance */ | |
1225 | outw(IDON | INEA | STRT, DEPCA_DATA); | |
1226 | if (depca_debug > 2) { | |
1227 | printk("%s: DEPCA open after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA)); | |
1228 | } | |
1229 | } else { | |
1230 | printk("%s: DEPCA unopen after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA)); | |
1231 | status = -1; | |
1232 | } | |
1233 | ||
1234 | return status; | |
1235 | } | |
1236 | ||
1da177e4 LT |
1237 | /* |
1238 | ** Set or clear the multicast filter for this adaptor. | |
1239 | */ | |
1240 | static void set_multicast_list(struct net_device *dev) | |
1241 | { | |
4cf1653a | 1242 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
1243 | u_long ioaddr = dev->base_addr; |
1244 | ||
107ce6d2 ES |
1245 | netif_stop_queue(dev); |
1246 | while (lp->tx_old != lp->tx_new); /* Wait for the ring to empty */ | |
1da177e4 | 1247 | |
107ce6d2 ES |
1248 | STOP_DEPCA; /* Temporarily stop the depca. */ |
1249 | depca_init_ring(dev); /* Initialize the descriptor rings */ | |
1da177e4 | 1250 | |
107ce6d2 ES |
1251 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous mode */ |
1252 | lp->init_block.mode |= PROM; | |
1253 | } else { | |
1254 | SetMulticastFilter(dev); | |
1255 | lp->init_block.mode &= ~PROM; /* Unset promiscuous mode */ | |
1da177e4 | 1256 | } |
107ce6d2 ES |
1257 | |
1258 | LoadCSRs(dev); /* Reload CSR3 */ | |
1259 | InitRestartDepca(dev); /* Resume normal operation. */ | |
1260 | netif_start_queue(dev); /* Unlock the TX ring */ | |
1da177e4 LT |
1261 | } |
1262 | ||
1263 | /* | |
1264 | ** Calculate the hash code and update the logical address filter | |
1265 | ** from a list of ethernet multicast addresses. | |
1266 | ** Big endian crc one liner is mine, all mine, ha ha ha ha! | |
1267 | ** LANCE calculates its hash codes big endian. | |
1268 | */ | |
1269 | static void SetMulticastFilter(struct net_device *dev) | |
1270 | { | |
4cf1653a | 1271 | struct depca_private *lp = netdev_priv(dev); |
22bedad3 | 1272 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1273 | char *addrs; |
1274 | int i, j, bit, byte; | |
1275 | u16 hashcode; | |
1276 | u32 crc; | |
1277 | ||
1278 | if (dev->flags & IFF_ALLMULTI) { /* Set all multicast bits */ | |
1279 | for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { | |
1280 | lp->init_block.mcast_table[i] = (char) 0xff; | |
1281 | } | |
1282 | } else { | |
1283 | for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { /* Clear the multicast table */ | |
1284 | lp->init_block.mcast_table[i] = 0; | |
1285 | } | |
1286 | /* Add multicast addresses */ | |
22bedad3 JP |
1287 | netdev_for_each_mc_addr(ha, dev) { |
1288 | addrs = ha->addr; | |
1da177e4 LT |
1289 | if ((*addrs & 0x01) == 1) { /* multicast address? */ |
1290 | crc = ether_crc(ETH_ALEN, addrs); | |
1291 | hashcode = (crc & 1); /* hashcode is 6 LSb of CRC ... */ | |
1292 | for (j = 0; j < 5; j++) { /* ... in reverse order. */ | |
1293 | hashcode = (hashcode << 1) | ((crc >>= 1) & 1); | |
1294 | } | |
1295 | ||
1296 | ||
1297 | byte = hashcode >> 3; /* bit[3-5] -> byte in filter */ | |
1298 | bit = 1 << (hashcode & 0x07); /* bit[0-2] -> bit in byte */ | |
1299 | lp->init_block.mcast_table[byte] |= bit; | |
1300 | } | |
1301 | } | |
1302 | } | |
1da177e4 LT |
1303 | } |
1304 | ||
1305 | static int __init depca_common_init (u_long ioaddr, struct net_device **devp) | |
1306 | { | |
1307 | int status = 0; | |
6aa20a22 | 1308 | |
1da177e4 LT |
1309 | if (!request_region (ioaddr, DEPCA_TOTAL_SIZE, depca_string)) { |
1310 | status = -EBUSY; | |
1311 | goto out; | |
1312 | } | |
6aa20a22 | 1313 | |
1da177e4 LT |
1314 | if (DevicePresent(ioaddr)) { |
1315 | status = -ENODEV; | |
1316 | goto out_release; | |
1317 | } | |
1318 | ||
1319 | if (!(*devp = alloc_etherdev (sizeof (struct depca_private)))) { | |
1320 | status = -ENOMEM; | |
1321 | goto out_release; | |
1322 | } | |
1323 | ||
1324 | return 0; | |
6aa20a22 | 1325 | |
1da177e4 LT |
1326 | out_release: |
1327 | release_region (ioaddr, DEPCA_TOTAL_SIZE); | |
1328 | out: | |
1329 | return status; | |
1330 | } | |
1331 | ||
1332 | #ifdef CONFIG_MCA | |
1333 | /* | |
1334 | ** Microchannel bus I/O device probe | |
1335 | */ | |
1336 | static int __init depca_mca_probe(struct device *device) | |
1337 | { | |
1338 | unsigned char pos[2]; | |
1339 | unsigned char where; | |
1340 | unsigned long iobase, mem_start; | |
1341 | int irq, err; | |
1342 | struct mca_device *mdev = to_mca_device (device); | |
1343 | struct net_device *dev; | |
1344 | struct depca_private *lp; | |
1345 | ||
1346 | /* | |
6aa20a22 | 1347 | ** Search for the adapter. If an address has been given, search |
1da177e4 LT |
1348 | ** specifically for the card at that address. Otherwise find the |
1349 | ** first card in the system. | |
1350 | */ | |
6aa20a22 | 1351 | |
1da177e4 LT |
1352 | pos[0] = mca_device_read_stored_pos(mdev, 2); |
1353 | pos[1] = mca_device_read_stored_pos(mdev, 3); | |
1354 | ||
1355 | /* | |
6aa20a22 | 1356 | ** IO of card is handled by bits 1 and 2 of pos0. |
1da177e4 LT |
1357 | ** |
1358 | ** bit2 bit1 IO | |
1359 | ** 0 0 0x2c00 | |
1360 | ** 0 1 0x2c10 | |
1361 | ** 1 0 0x2c20 | |
1362 | ** 1 1 0x2c30 | |
1363 | */ | |
1364 | where = (pos[0] & 6) >> 1; | |
1365 | iobase = 0x2c00 + (0x10 * where); | |
1366 | ||
1367 | /* | |
1368 | ** Found the adapter we were looking for. Now start setting it up. | |
6aa20a22 | 1369 | ** |
1da177e4 LT |
1370 | ** First work on decoding the IRQ. It's stored in the lower 4 bits |
1371 | ** of pos1. Bits are as follows (from the ADF file): | |
1372 | ** | |
6aa20a22 JG |
1373 | ** Bits |
1374 | ** 3 2 1 0 IRQ | |
1da177e4 LT |
1375 | ** -------------------- |
1376 | ** 0 0 1 0 5 | |
1377 | ** 0 0 0 1 9 | |
1378 | ** 0 1 0 0 10 | |
1379 | ** 1 0 0 0 11 | |
1380 | */ | |
1381 | where = pos[1] & 0x0f; | |
1382 | switch (where) { | |
1383 | case 1: | |
1384 | irq = 9; | |
1385 | break; | |
1386 | case 2: | |
1387 | irq = 5; | |
1388 | break; | |
1389 | case 4: | |
1390 | irq = 10; | |
1391 | break; | |
1392 | case 8: | |
1393 | irq = 11; | |
1394 | break; | |
1395 | default: | |
6a6bbd29 | 1396 | printk("%s: mca_probe IRQ error. You should never get here (%d).\n", mdev->name, where); |
1da177e4 LT |
1397 | return -EINVAL; |
1398 | } | |
1399 | ||
1400 | /* | |
1401 | ** Shared memory address of adapter is stored in bits 3-5 of pos0. | |
1402 | ** They are mapped as follows: | |
1403 | ** | |
1404 | ** Bit | |
1405 | ** 5 4 3 Memory Addresses | |
1406 | ** 0 0 0 C0000-CFFFF (64K) | |
1407 | ** 1 0 0 C8000-CFFFF (32K) | |
1408 | ** 0 0 1 D0000-DFFFF (64K) | |
1409 | ** 1 0 1 D8000-DFFFF (32K) | |
1410 | ** 0 1 0 E0000-EFFFF (64K) | |
1411 | ** 1 1 0 E8000-EFFFF (32K) | |
1412 | */ | |
1413 | where = (pos[0] & 0x18) >> 3; | |
1414 | mem_start = 0xc0000 + (where * 0x10000); | |
1415 | if (pos[0] & 0x20) { | |
1416 | mem_start += 0x8000; | |
1417 | } | |
1418 | ||
1419 | /* claim the slot */ | |
1420 | strncpy(mdev->name, depca_mca_adapter_name[mdev->index], | |
1421 | sizeof(mdev->name)); | |
1422 | mca_device_set_claim(mdev, 1); | |
6aa20a22 | 1423 | |
1da177e4 LT |
1424 | /* |
1425 | ** Get everything allocated and initialized... (almost just | |
1426 | ** like the ISA and EISA probes) | |
1427 | */ | |
1428 | irq = mca_device_transform_irq(mdev, irq); | |
1429 | iobase = mca_device_transform_ioport(mdev, iobase); | |
1430 | ||
1431 | if ((err = depca_common_init (iobase, &dev))) | |
1432 | goto out_unclaim; | |
1433 | ||
1434 | dev->irq = irq; | |
1435 | dev->base_addr = iobase; | |
4cf1653a | 1436 | lp = netdev_priv(dev); |
1da177e4 LT |
1437 | lp->depca_bus = DEPCA_BUS_MCA; |
1438 | lp->adapter = depca_mca_adapter_type[mdev->index]; | |
1439 | lp->mem_start = mem_start; | |
6aa20a22 | 1440 | |
1da177e4 LT |
1441 | if ((err = depca_hw_init(dev, device))) |
1442 | goto out_free; | |
6aa20a22 | 1443 | |
1da177e4 LT |
1444 | return 0; |
1445 | ||
1446 | out_free: | |
1447 | free_netdev (dev); | |
1448 | release_region (iobase, DEPCA_TOTAL_SIZE); | |
1449 | out_unclaim: | |
1450 | mca_device_set_claim(mdev, 0); | |
1451 | ||
1452 | return err; | |
1453 | } | |
1454 | #endif | |
1455 | ||
1456 | /* | |
1457 | ** ISA bus I/O device probe | |
1458 | */ | |
1459 | ||
1da177e4 LT |
1460 | static void __init depca_platform_probe (void) |
1461 | { | |
1462 | int i; | |
1463 | struct platform_device *pldev; | |
1464 | ||
1465 | for (i = 0; depca_io_ports[i].iobase; i++) { | |
1466 | depca_io_ports[i].device = NULL; | |
6aa20a22 | 1467 | |
1da177e4 LT |
1468 | /* if an address has been specified on the command |
1469 | * line, use it (if valid) */ | |
1470 | if (io && io != depca_io_ports[i].iobase) | |
1471 | continue; | |
5d994b7f RK |
1472 | |
1473 | pldev = platform_device_alloc(depca_string, i); | |
1474 | if (!pldev) | |
1da177e4 LT |
1475 | continue; |
1476 | ||
1da177e4 | 1477 | pldev->dev.platform_data = (void *) depca_io_ports[i].iobase; |
1da177e4 LT |
1478 | depca_io_ports[i].device = pldev; |
1479 | ||
5d994b7f | 1480 | if (platform_device_add(pldev)) { |
1da177e4 | 1481 | depca_io_ports[i].device = NULL; |
d91c088b AR |
1482 | pldev->dev.platform_data = NULL; |
1483 | platform_device_put(pldev); | |
1da177e4 LT |
1484 | continue; |
1485 | } | |
1486 | ||
1487 | if (!pldev->dev.driver) { | |
1488 | /* The driver was not bound to this device, there was | |
1489 | * no hardware at this address. Unregister it, as the | |
eef35c2d | 1490 | * release function will take care of freeing the |
1da177e4 | 1491 | * allocated structure */ |
6aa20a22 | 1492 | |
1da177e4 | 1493 | depca_io_ports[i].device = NULL; |
5d994b7f | 1494 | pldev->dev.platform_data = NULL; |
1da177e4 LT |
1495 | platform_device_unregister (pldev); |
1496 | } | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | static enum depca_type __init depca_shmem_probe (ulong *mem_start) | |
1501 | { | |
1502 | u_long mem_base[] = DEPCA_RAM_BASE_ADDRESSES; | |
1503 | enum depca_type adapter = unknown; | |
1504 | int i; | |
1505 | ||
1506 | for (i = 0; mem_base[i]; i++) { | |
1507 | *mem_start = mem ? mem : mem_base[i]; | |
1508 | adapter = DepcaSignature (adapter_name, *mem_start); | |
1509 | if (adapter != unknown) | |
1510 | break; | |
1511 | } | |
1512 | ||
1513 | return adapter; | |
1514 | } | |
1515 | ||
ebd80880 | 1516 | static int __devinit depca_isa_probe (struct platform_device *device) |
1da177e4 LT |
1517 | { |
1518 | struct net_device *dev; | |
1519 | struct depca_private *lp; | |
1520 | u_long ioaddr, mem_start = 0; | |
1521 | enum depca_type adapter = unknown; | |
1522 | int status = 0; | |
1523 | ||
3ae5eaec | 1524 | ioaddr = (u_long) device->dev.platform_data; |
1da177e4 LT |
1525 | |
1526 | if ((status = depca_common_init (ioaddr, &dev))) | |
1527 | goto out; | |
1528 | ||
1529 | adapter = depca_shmem_probe (&mem_start); | |
6aa20a22 | 1530 | |
1da177e4 LT |
1531 | if (adapter == unknown) { |
1532 | status = -ENODEV; | |
1533 | goto out_free; | |
1534 | } | |
1535 | ||
1536 | dev->base_addr = ioaddr; | |
1537 | dev->irq = irq; /* Use whatever value the user gave | |
1538 | * us, and 0 if he didn't. */ | |
4cf1653a | 1539 | lp = netdev_priv(dev); |
1da177e4 LT |
1540 | lp->depca_bus = DEPCA_BUS_ISA; |
1541 | lp->adapter = adapter; | |
1542 | lp->mem_start = mem_start; | |
6aa20a22 | 1543 | |
3ae5eaec | 1544 | if ((status = depca_hw_init(dev, &device->dev))) |
1da177e4 | 1545 | goto out_free; |
6aa20a22 | 1546 | |
1da177e4 LT |
1547 | return 0; |
1548 | ||
1549 | out_free: | |
1550 | free_netdev (dev); | |
1551 | release_region (ioaddr, DEPCA_TOTAL_SIZE); | |
1552 | out: | |
1553 | return status; | |
1554 | } | |
1555 | ||
1556 | /* | |
1557 | ** EISA callbacks from sysfs. | |
1558 | */ | |
1559 | ||
1560 | #ifdef CONFIG_EISA | |
1561 | static int __init depca_eisa_probe (struct device *device) | |
1562 | { | |
99da1a8a | 1563 | enum depca_type adapter = unknown; |
1da177e4 LT |
1564 | struct eisa_device *edev; |
1565 | struct net_device *dev; | |
1566 | struct depca_private *lp; | |
1567 | u_long ioaddr, mem_start; | |
1568 | int status = 0; | |
1569 | ||
1570 | edev = to_eisa_device (device); | |
1571 | ioaddr = edev->base_addr + DEPCA_EISA_IO_PORTS; | |
1572 | ||
1573 | if ((status = depca_common_init (ioaddr, &dev))) | |
1574 | goto out; | |
1575 | ||
1576 | /* It would have been nice to get card configuration from the | |
1577 | * card. Unfortunately, this register is write-only (shares | |
1578 | * it's address with the ethernet prom)... As we don't parse | |
1579 | * the EISA configuration structures (yet... :-), just rely on | |
1580 | * the ISA probing to sort it out... */ | |
6aa20a22 | 1581 | |
99da1a8a IM |
1582 | adapter = depca_shmem_probe (&mem_start); |
1583 | if (adapter == unknown) { | |
1584 | status = -ENODEV; | |
1585 | goto out_free; | |
1586 | } | |
1da177e4 LT |
1587 | |
1588 | dev->base_addr = ioaddr; | |
1589 | dev->irq = irq; | |
4cf1653a | 1590 | lp = netdev_priv(dev); |
1da177e4 LT |
1591 | lp->depca_bus = DEPCA_BUS_EISA; |
1592 | lp->adapter = edev->id.driver_data; | |
1593 | lp->mem_start = mem_start; | |
6aa20a22 | 1594 | |
1da177e4 LT |
1595 | if ((status = depca_hw_init(dev, device))) |
1596 | goto out_free; | |
6aa20a22 | 1597 | |
1da177e4 LT |
1598 | return 0; |
1599 | ||
1600 | out_free: | |
1601 | free_netdev (dev); | |
1602 | release_region (ioaddr, DEPCA_TOTAL_SIZE); | |
1603 | out: | |
1604 | return status; | |
1605 | } | |
1606 | #endif | |
1607 | ||
1608 | static int __devexit depca_device_remove (struct device *device) | |
1609 | { | |
1610 | struct net_device *dev; | |
1611 | struct depca_private *lp; | |
1612 | int bus; | |
1613 | ||
1aec5bdf | 1614 | dev = dev_get_drvdata(device); |
4cf1653a | 1615 | lp = netdev_priv(dev); |
1da177e4 LT |
1616 | |
1617 | unregister_netdev (dev); | |
1618 | iounmap (lp->sh_mem); | |
1619 | release_mem_region (lp->mem_start, lp->mem_len); | |
1620 | release_region (dev->base_addr, DEPCA_TOTAL_SIZE); | |
1621 | bus = lp->depca_bus; | |
1622 | free_netdev (dev); | |
1623 | ||
1624 | return 0; | |
1625 | } | |
1626 | ||
1627 | /* | |
1628 | ** Look for a particular board name in the on-board Remote Diagnostics | |
1629 | ** and Boot (readb) ROM. This will also give us a clue to the network RAM | |
1630 | ** base address. | |
1631 | */ | |
1632 | static int __init DepcaSignature(char *name, u_long base_addr) | |
1633 | { | |
1634 | u_int i, j, k; | |
1635 | void __iomem *ptr; | |
1636 | char tmpstr[16]; | |
1637 | u_long prom_addr = base_addr + 0xc000; | |
1638 | u_long mem_addr = base_addr + 0x8000; /* 32KB */ | |
1639 | ||
1640 | /* Can't reserve the prom region, it is already marked as | |
1641 | * used, at least on x86. Instead, reserve a memory region a | |
1642 | * board would certainly use. If it works, go ahead. If not, | |
1643 | * run like hell... */ | |
6aa20a22 | 1644 | |
1da177e4 LT |
1645 | if (!request_mem_region (mem_addr, 16, depca_string)) |
1646 | return unknown; | |
1647 | ||
1648 | /* Copy the first 16 bytes of ROM */ | |
1649 | ||
1650 | ptr = ioremap(prom_addr, 16); | |
1651 | if (ptr == NULL) { | |
1652 | printk(KERN_ERR "depca: I/O remap failed at %lx\n", prom_addr); | |
1653 | return unknown; | |
1654 | } | |
1655 | for (i = 0; i < 16; i++) { | |
1656 | tmpstr[i] = readb(ptr + i); | |
1657 | } | |
1658 | iounmap(ptr); | |
1659 | ||
1660 | release_mem_region (mem_addr, 16); | |
1661 | ||
1662 | /* Check if PROM contains a valid string */ | |
1663 | for (i = 0; *depca_signature[i] != '\0'; i++) { | |
1664 | for (j = 0, k = 0; j < 16 && k < strlen(depca_signature[i]); j++) { | |
1665 | if (depca_signature[i][k] == tmpstr[j]) { /* track signature */ | |
1666 | k++; | |
1667 | } else { /* lost signature; begin search again */ | |
1668 | k = 0; | |
1669 | } | |
1670 | } | |
1671 | if (k == strlen(depca_signature[i])) | |
1672 | break; | |
1673 | } | |
1674 | ||
1675 | /* Check if name string is valid, provided there's no PROM */ | |
1676 | if (name && *name && (i == unknown)) { | |
1677 | for (i = 0; *depca_signature[i] != '\0'; i++) { | |
1678 | if (strcmp(name, depca_signature[i]) == 0) | |
1679 | break; | |
1680 | } | |
1681 | } | |
1682 | ||
1683 | return i; | |
1684 | } | |
1685 | ||
1686 | /* | |
1687 | ** Look for a special sequence in the Ethernet station address PROM that | |
1688 | ** is common across all DEPCA products. Note that the original DEPCA needs | |
1689 | ** its ROM address counter to be initialized and enabled. Only enable | |
1690 | ** if the first address octet is a 0x08 - this minimises the chances of | |
1691 | ** messing around with some other hardware, but it assumes that this DEPCA | |
1692 | ** card initialized itself correctly. | |
6aa20a22 | 1693 | ** |
1da177e4 LT |
1694 | ** Search the Ethernet address ROM for the signature. Since the ROM address |
1695 | ** counter can start at an arbitrary point, the search must include the entire | |
1696 | ** probe sequence length plus the (length_of_the_signature - 1). | |
1697 | ** Stop the search IMMEDIATELY after the signature is found so that the | |
1698 | ** PROM address counter is correctly positioned at the start of the | |
1699 | ** ethernet address for later read out. | |
1700 | */ | |
1701 | static int __init DevicePresent(u_long ioaddr) | |
1702 | { | |
1703 | union { | |
1704 | struct { | |
1705 | u32 a; | |
1706 | u32 b; | |
1707 | } llsig; | |
1708 | char Sig[sizeof(u32) << 1]; | |
1709 | } | |
1710 | dev; | |
1711 | short sigLength = 0; | |
1712 | s8 data; | |
1713 | s16 nicsr; | |
1714 | int i, j, status = 0; | |
1715 | ||
1716 | data = inb(DEPCA_PROM); /* clear counter on DEPCA */ | |
1717 | data = inb(DEPCA_PROM); /* read data */ | |
1718 | ||
1719 | if (data == 0x08) { /* Enable counter on DEPCA */ | |
1720 | nicsr = inb(DEPCA_NICSR); | |
1721 | nicsr |= AAC; | |
1722 | outb(nicsr, DEPCA_NICSR); | |
1723 | } | |
1724 | ||
1725 | dev.llsig.a = ETH_PROM_SIG; | |
1726 | dev.llsig.b = ETH_PROM_SIG; | |
1727 | sigLength = sizeof(u32) << 1; | |
1728 | ||
1729 | for (i = 0, j = 0; j < sigLength && i < PROBE_LENGTH + sigLength - 1; i++) { | |
1730 | data = inb(DEPCA_PROM); | |
1731 | if (dev.Sig[j] == data) { /* track signature */ | |
1732 | j++; | |
1733 | } else { /* lost signature; begin search again */ | |
1734 | if (data == dev.Sig[0]) { /* rare case.... */ | |
1735 | j = 1; | |
1736 | } else { | |
1737 | j = 0; | |
1738 | } | |
1739 | } | |
1740 | } | |
1741 | ||
1742 | if (j != sigLength) { | |
1743 | status = -ENODEV; /* search failed */ | |
1744 | } | |
1745 | ||
1746 | return status; | |
1747 | } | |
1748 | ||
1749 | /* | |
1750 | ** The DE100 and DE101 PROM accesses were made non-standard for some bizarre | |
1751 | ** reason: access the upper half of the PROM with x=0; access the lower half | |
1752 | ** with x=1. | |
1753 | */ | |
1754 | static int __init get_hw_addr(struct net_device *dev) | |
1755 | { | |
1756 | u_long ioaddr = dev->base_addr; | |
4cf1653a | 1757 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
1758 | int i, k, tmp, status = 0; |
1759 | u_short j, x, chksum; | |
1760 | ||
1761 | x = (((lp->adapter == de100) || (lp->adapter == de101)) ? 1 : 0); | |
1762 | ||
1763 | for (i = 0, k = 0, j = 0; j < 3; j++) { | |
1764 | k <<= 1; | |
1765 | if (k > 0xffff) | |
1766 | k -= 0xffff; | |
1767 | ||
1768 | k += (u_char) (tmp = inb(DEPCA_PROM + x)); | |
1769 | dev->dev_addr[i++] = (u_char) tmp; | |
1770 | k += (u_short) ((tmp = inb(DEPCA_PROM + x)) << 8); | |
1771 | dev->dev_addr[i++] = (u_char) tmp; | |
1772 | ||
1773 | if (k > 0xffff) | |
1774 | k -= 0xffff; | |
1775 | } | |
1776 | if (k == 0xffff) | |
1777 | k = 0; | |
1778 | ||
1779 | chksum = (u_char) inb(DEPCA_PROM + x); | |
1780 | chksum |= (u_short) (inb(DEPCA_PROM + x) << 8); | |
1781 | if (k != chksum) | |
1782 | status = -1; | |
1783 | ||
1784 | return status; | |
1785 | } | |
1786 | ||
1787 | /* | |
1788 | ** Load a packet into the shared memory | |
1789 | */ | |
1790 | static int load_packet(struct net_device *dev, struct sk_buff *skb) | |
1791 | { | |
4cf1653a | 1792 | struct depca_private *lp = netdev_priv(dev); |
ec634fe3 | 1793 | int i, entry, end, len, status = NETDEV_TX_OK; |
1da177e4 LT |
1794 | |
1795 | entry = lp->tx_new; /* Ring around buffer number. */ | |
1796 | end = (entry + (skb->len - 1) / TX_BUFF_SZ) & lp->txRingMask; | |
1797 | if (!(readl(&lp->tx_ring[end].base) & T_OWN)) { /* Enough room? */ | |
6aa20a22 | 1798 | /* |
1da177e4 LT |
1799 | ** Caution: the write order is important here... don't set up the |
1800 | ** ownership rights until all the other information is in place. | |
1801 | */ | |
1802 | if (end < entry) { /* wrapped buffer */ | |
1803 | len = (lp->txRingMask - entry + 1) * TX_BUFF_SZ; | |
1804 | memcpy_toio(lp->tx_buff[entry], skb->data, len); | |
1805 | memcpy_toio(lp->tx_buff[0], skb->data + len, skb->len - len); | |
1806 | } else { /* linear buffer */ | |
1807 | memcpy_toio(lp->tx_buff[entry], skb->data, skb->len); | |
1808 | } | |
1809 | ||
1810 | /* set up the buffer descriptors */ | |
1811 | len = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len; | |
1812 | for (i = entry; i != end; i = (i+1) & lp->txRingMask) { | |
1813 | /* clean out flags */ | |
1814 | writel(readl(&lp->tx_ring[i].base) & ~T_FLAGS, &lp->tx_ring[i].base); | |
1815 | writew(0x0000, &lp->tx_ring[i].misc); /* clears other error flags */ | |
1816 | writew(-TX_BUFF_SZ, &lp->tx_ring[i].length); /* packet length in buffer */ | |
1817 | len -= TX_BUFF_SZ; | |
1818 | } | |
1819 | /* clean out flags */ | |
1820 | writel(readl(&lp->tx_ring[end].base) & ~T_FLAGS, &lp->tx_ring[end].base); | |
1821 | writew(0x0000, &lp->tx_ring[end].misc); /* clears other error flags */ | |
1822 | writew(-len, &lp->tx_ring[end].length); /* packet length in last buff */ | |
1823 | ||
1824 | /* start of packet */ | |
1825 | writel(readl(&lp->tx_ring[entry].base) | T_STP, &lp->tx_ring[entry].base); | |
1826 | /* end of packet */ | |
1827 | writel(readl(&lp->tx_ring[end].base) | T_ENP, &lp->tx_ring[end].base); | |
1828 | ||
1829 | for (i = end; i != entry; --i) { | |
1830 | /* ownership of packet */ | |
1831 | writel(readl(&lp->tx_ring[i].base) | T_OWN, &lp->tx_ring[i].base); | |
1832 | if (i == 0) | |
1833 | i = lp->txRingMask + 1; | |
1834 | } | |
1835 | writel(readl(&lp->tx_ring[entry].base) | T_OWN, &lp->tx_ring[entry].base); | |
1836 | ||
1837 | lp->tx_new = (++end) & lp->txRingMask; /* update current pointers */ | |
1838 | } else { | |
5b548140 | 1839 | status = NETDEV_TX_LOCKED; |
1da177e4 LT |
1840 | } |
1841 | ||
1842 | return status; | |
1843 | } | |
1844 | ||
1845 | static void depca_dbg_open(struct net_device *dev) | |
1846 | { | |
4cf1653a | 1847 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
1848 | u_long ioaddr = dev->base_addr; |
1849 | struct depca_init *p = &lp->init_block; | |
1850 | int i; | |
1851 | ||
1852 | if (depca_debug > 1) { | |
1853 | /* Do not copy the shadow init block into shared memory */ | |
1854 | /* Debugging should not affect normal operation! */ | |
1855 | /* The shadow init block will get copied across during InitRestartDepca */ | |
1856 | printk("%s: depca open with irq %d\n", dev->name, dev->irq); | |
1857 | printk("Descriptor head addresses (CPU):\n"); | |
1858 | printk(" 0x%lx 0x%lx\n", (u_long) lp->rx_ring, (u_long) lp->tx_ring); | |
1859 | printk("Descriptor addresses (CPU):\nRX: "); | |
1860 | for (i = 0; i < lp->rxRingMask; i++) { | |
1861 | if (i < 3) { | |
1862 | printk("%p ", &lp->rx_ring[i].base); | |
1863 | } | |
1864 | } | |
1865 | printk("...%p\n", &lp->rx_ring[i].base); | |
1866 | printk("TX: "); | |
1867 | for (i = 0; i < lp->txRingMask; i++) { | |
1868 | if (i < 3) { | |
1869 | printk("%p ", &lp->tx_ring[i].base); | |
1870 | } | |
1871 | } | |
1872 | printk("...%p\n", &lp->tx_ring[i].base); | |
1873 | printk("\nDescriptor buffers (Device):\nRX: "); | |
1874 | for (i = 0; i < lp->rxRingMask; i++) { | |
1875 | if (i < 3) { | |
1876 | printk("0x%8.8x ", readl(&lp->rx_ring[i].base)); | |
1877 | } | |
1878 | } | |
1879 | printk("...0x%8.8x\n", readl(&lp->rx_ring[i].base)); | |
1880 | printk("TX: "); | |
1881 | for (i = 0; i < lp->txRingMask; i++) { | |
1882 | if (i < 3) { | |
1883 | printk("0x%8.8x ", readl(&lp->tx_ring[i].base)); | |
1884 | } | |
1885 | } | |
1886 | printk("...0x%8.8x\n", readl(&lp->tx_ring[i].base)); | |
1887 | printk("Initialisation block at 0x%8.8lx(Phys)\n", lp->mem_start); | |
1888 | printk(" mode: 0x%4.4x\n", p->mode); | |
e174961c | 1889 | printk(" physical address: %pM\n", p->phys_addr); |
1da177e4 LT |
1890 | printk(" multicast hash table: "); |
1891 | for (i = 0; i < (HASH_TABLE_LEN >> 3) - 1; i++) { | |
1892 | printk("%2.2x:", p->mcast_table[i]); | |
1893 | } | |
1894 | printk("%2.2x\n", p->mcast_table[i]); | |
1895 | printk(" rx_ring at: 0x%8.8x\n", p->rx_ring); | |
1896 | printk(" tx_ring at: 0x%8.8x\n", p->tx_ring); | |
1897 | printk("buffers (Phys): 0x%8.8lx\n", lp->mem_start + lp->buffs_offset); | |
1898 | printk("Ring size:\nRX: %d Log2(rxRingMask): 0x%8.8x\n", (int) lp->rxRingMask + 1, lp->rx_rlen); | |
1899 | printk("TX: %d Log2(txRingMask): 0x%8.8x\n", (int) lp->txRingMask + 1, lp->tx_rlen); | |
1900 | outw(CSR2, DEPCA_ADDR); | |
1901 | printk("CSR2&1: 0x%4.4x", inw(DEPCA_DATA)); | |
1902 | outw(CSR1, DEPCA_ADDR); | |
1903 | printk("%4.4x\n", inw(DEPCA_DATA)); | |
1904 | outw(CSR3, DEPCA_ADDR); | |
1905 | printk("CSR3: 0x%4.4x\n", inw(DEPCA_DATA)); | |
1906 | } | |
1da177e4 LT |
1907 | } |
1908 | ||
1909 | /* | |
1910 | ** Perform IOCTL call functions here. Some are privileged operations and the | |
1911 | ** effective uid is checked in those cases. | |
1912 | ** All multicast IOCTLs will not work here and are for testing purposes only. | |
1913 | */ | |
1914 | static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1915 | { | |
4cf1653a | 1916 | struct depca_private *lp = netdev_priv(dev); |
1da177e4 LT |
1917 | struct depca_ioctl *ioc = (struct depca_ioctl *) &rq->ifr_ifru; |
1918 | int i, status = 0; | |
1919 | u_long ioaddr = dev->base_addr; | |
1920 | union { | |
1921 | u8 addr[(HASH_TABLE_LEN * ETH_ALEN)]; | |
1922 | u16 sval[(HASH_TABLE_LEN * ETH_ALEN) >> 1]; | |
1923 | u32 lval[(HASH_TABLE_LEN * ETH_ALEN) >> 2]; | |
1924 | } tmp; | |
1925 | unsigned long flags; | |
1926 | void *buf; | |
1927 | ||
1928 | switch (ioc->cmd) { | |
1929 | case DEPCA_GET_HWADDR: /* Get the hardware address */ | |
1930 | for (i = 0; i < ETH_ALEN; i++) { | |
1931 | tmp.addr[i] = dev->dev_addr[i]; | |
1932 | } | |
1933 | ioc->len = ETH_ALEN; | |
1934 | if (copy_to_user(ioc->data, tmp.addr, ioc->len)) | |
1935 | return -EFAULT; | |
1936 | break; | |
1937 | ||
1938 | case DEPCA_SET_HWADDR: /* Set the hardware address */ | |
1939 | if (!capable(CAP_NET_ADMIN)) | |
1940 | return -EPERM; | |
1941 | if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN)) | |
1942 | return -EFAULT; | |
1943 | for (i = 0; i < ETH_ALEN; i++) { | |
1944 | dev->dev_addr[i] = tmp.addr[i]; | |
1945 | } | |
1946 | netif_stop_queue(dev); | |
1947 | while (lp->tx_old != lp->tx_new) | |
1948 | cpu_relax(); /* Wait for the ring to empty */ | |
1949 | ||
1950 | STOP_DEPCA; /* Temporarily stop the depca. */ | |
1951 | depca_init_ring(dev); /* Initialize the descriptor rings */ | |
1952 | LoadCSRs(dev); /* Reload CSR3 */ | |
1953 | InitRestartDepca(dev); /* Resume normal operation. */ | |
1954 | netif_start_queue(dev); /* Unlock the TX ring */ | |
1955 | break; | |
1956 | ||
1957 | case DEPCA_SET_PROM: /* Set Promiscuous Mode */ | |
1958 | if (!capable(CAP_NET_ADMIN)) | |
1959 | return -EPERM; | |
1960 | netif_stop_queue(dev); | |
1961 | while (lp->tx_old != lp->tx_new) | |
1962 | cpu_relax(); /* Wait for the ring to empty */ | |
1963 | ||
1964 | STOP_DEPCA; /* Temporarily stop the depca. */ | |
1965 | depca_init_ring(dev); /* Initialize the descriptor rings */ | |
1966 | lp->init_block.mode |= PROM; /* Set promiscuous mode */ | |
1967 | ||
1968 | LoadCSRs(dev); /* Reload CSR3 */ | |
1969 | InitRestartDepca(dev); /* Resume normal operation. */ | |
1970 | netif_start_queue(dev); /* Unlock the TX ring */ | |
1971 | break; | |
1972 | ||
1973 | case DEPCA_CLR_PROM: /* Clear Promiscuous Mode */ | |
1974 | if (!capable(CAP_NET_ADMIN)) | |
1975 | return -EPERM; | |
1976 | netif_stop_queue(dev); | |
1977 | while (lp->tx_old != lp->tx_new) | |
1978 | cpu_relax(); /* Wait for the ring to empty */ | |
1979 | ||
1980 | STOP_DEPCA; /* Temporarily stop the depca. */ | |
1981 | depca_init_ring(dev); /* Initialize the descriptor rings */ | |
1982 | lp->init_block.mode &= ~PROM; /* Clear promiscuous mode */ | |
1983 | ||
1984 | LoadCSRs(dev); /* Reload CSR3 */ | |
1985 | InitRestartDepca(dev); /* Resume normal operation. */ | |
1986 | netif_start_queue(dev); /* Unlock the TX ring */ | |
1987 | break; | |
1988 | ||
1989 | case DEPCA_SAY_BOO: /* Say "Boo!" to the kernel log file */ | |
1990 | if(!capable(CAP_NET_ADMIN)) | |
1991 | return -EPERM; | |
1992 | printk("%s: Boo!\n", dev->name); | |
1993 | break; | |
1994 | ||
1995 | case DEPCA_GET_MCA: /* Get the multicast address table */ | |
1996 | ioc->len = (HASH_TABLE_LEN >> 3); | |
1997 | if (copy_to_user(ioc->data, lp->init_block.mcast_table, ioc->len)) | |
1998 | return -EFAULT; | |
1999 | break; | |
2000 | ||
2001 | case DEPCA_SET_MCA: /* Set a multicast address */ | |
2002 | if (!capable(CAP_NET_ADMIN)) | |
2003 | return -EPERM; | |
2004 | if (ioc->len >= HASH_TABLE_LEN) | |
2005 | return -EINVAL; | |
2006 | if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN * ioc->len)) | |
2007 | return -EFAULT; | |
2008 | set_multicast_list(dev); | |
2009 | break; | |
2010 | ||
2011 | case DEPCA_CLR_MCA: /* Clear all multicast addresses */ | |
2012 | if (!capable(CAP_NET_ADMIN)) | |
2013 | return -EPERM; | |
2014 | set_multicast_list(dev); | |
2015 | break; | |
2016 | ||
2017 | case DEPCA_MCA_EN: /* Enable pass all multicast addressing */ | |
2018 | if (!capable(CAP_NET_ADMIN)) | |
2019 | return -EPERM; | |
2020 | set_multicast_list(dev); | |
2021 | break; | |
2022 | ||
2023 | case DEPCA_GET_STATS: /* Get the driver statistics */ | |
2024 | ioc->len = sizeof(lp->pktStats); | |
2025 | buf = kmalloc(ioc->len, GFP_KERNEL); | |
2026 | if(!buf) | |
2027 | return -ENOMEM; | |
2028 | spin_lock_irqsave(&lp->lock, flags); | |
2029 | memcpy(buf, &lp->pktStats, ioc->len); | |
2030 | spin_unlock_irqrestore(&lp->lock, flags); | |
2031 | if (copy_to_user(ioc->data, buf, ioc->len)) | |
2032 | status = -EFAULT; | |
2033 | kfree(buf); | |
2034 | break; | |
2035 | ||
2036 | case DEPCA_CLR_STATS: /* Zero out the driver statistics */ | |
2037 | if (!capable(CAP_NET_ADMIN)) | |
2038 | return -EPERM; | |
2039 | spin_lock_irqsave(&lp->lock, flags); | |
2040 | memset(&lp->pktStats, 0, sizeof(lp->pktStats)); | |
2041 | spin_unlock_irqrestore(&lp->lock, flags); | |
2042 | break; | |
2043 | ||
2044 | case DEPCA_GET_REG: /* Get the DEPCA Registers */ | |
2045 | i = 0; | |
2046 | tmp.sval[i++] = inw(DEPCA_NICSR); | |
2047 | outw(CSR0, DEPCA_ADDR); /* status register */ | |
2048 | tmp.sval[i++] = inw(DEPCA_DATA); | |
2049 | memcpy(&tmp.sval[i], &lp->init_block, sizeof(struct depca_init)); | |
2050 | ioc->len = i + sizeof(struct depca_init); | |
2051 | if (copy_to_user(ioc->data, tmp.addr, ioc->len)) | |
2052 | return -EFAULT; | |
2053 | break; | |
2054 | ||
2055 | default: | |
2056 | return -EOPNOTSUPP; | |
2057 | } | |
2058 | ||
2059 | return status; | |
2060 | } | |
2061 | ||
2062 | static int __init depca_module_init (void) | |
2063 | { | |
84c3b972 | 2064 | int err = 0; |
1da177e4 LT |
2065 | |
2066 | #ifdef CONFIG_MCA | |
84c3b972 KV |
2067 | err = mca_register_driver(&depca_mca_driver); |
2068 | if (err) | |
2069 | goto err; | |
1da177e4 LT |
2070 | #endif |
2071 | #ifdef CONFIG_EISA | |
84c3b972 KV |
2072 | err = eisa_driver_register(&depca_eisa_driver); |
2073 | if (err) | |
2074 | goto err_mca; | |
1da177e4 | 2075 | #endif |
84c3b972 KV |
2076 | err = platform_driver_register(&depca_isa_driver); |
2077 | if (err) | |
2078 | goto err_eisa; | |
6aa20a22 | 2079 | |
84c3b972 KV |
2080 | depca_platform_probe(); |
2081 | return 0; | |
2082 | ||
2083 | err_eisa: | |
2084 | #ifdef CONFIG_EISA | |
2085 | eisa_driver_unregister(&depca_eisa_driver); | |
2086 | err_mca: | |
2087 | #endif | |
2088 | #ifdef CONFIG_MCA | |
2089 | mca_unregister_driver(&depca_mca_driver); | |
2090 | err: | |
2091 | #endif | |
2092 | return err; | |
1da177e4 LT |
2093 | } |
2094 | ||
2095 | static void __exit depca_module_exit (void) | |
2096 | { | |
2097 | int i; | |
2098 | #ifdef CONFIG_MCA | |
2099 | mca_unregister_driver (&depca_mca_driver); | |
2100 | #endif | |
2101 | #ifdef CONFIG_EISA | |
2102 | eisa_driver_unregister (&depca_eisa_driver); | |
2103 | #endif | |
3ae5eaec | 2104 | platform_driver_unregister (&depca_isa_driver); |
1da177e4 LT |
2105 | |
2106 | for (i = 0; depca_io_ports[i].iobase; i++) { | |
2107 | if (depca_io_ports[i].device) { | |
5d994b7f | 2108 | depca_io_ports[i].device->dev.platform_data = NULL; |
1da177e4 LT |
2109 | platform_device_unregister (depca_io_ports[i].device); |
2110 | depca_io_ports[i].device = NULL; | |
2111 | } | |
2112 | } | |
2113 | } | |
2114 | ||
2115 | module_init (depca_module_init); | |
2116 | module_exit (depca_module_exit); |