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[NET]: Nuke SET_MODULE_OWNER macro.
[deliverable/linux.git] / drivers / net / cs89x0.c
1 /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
2 * driver for linux.
3 */
4
5 /*
6 Written 1996 by Russell Nelson, with reference to skeleton.c
7 written 1993-1994 by Donald Becker.
8
9 This software may be used and distributed according to the terms
10 of the GNU General Public License, incorporated herein by reference.
11
12 The author may be reached at nelson@crynwr.com, Crynwr
13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
14
15 Changelog:
16
17 Mike Cruse : mcruse@cti-ltd.com
18 : Changes for Linux 2.0 compatibility.
19 : Added dev_id parameter in net_interrupt(),
20 : request_irq() and free_irq(). Just NULL for now.
21
22 Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
23 : in net_open() and net_close() so kerneld would know
24 : that the module is in use and wouldn't eject the
25 : driver prematurely.
26
27 Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
28 : as an example. Disabled autoprobing in init_module(),
29 : not a good thing to do to other devices while Linux
30 : is running from all accounts.
31
32 Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
33
34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
35 : email: ethernet@crystal.cirrus.com
36
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
38
39 Andrew Morton : andrewm@uow.edu.au
40 : Kernel 2.3.48
41 : Handle kmalloc() failures
42 : Other resource allocation fixes
43 : Add SMP locks
44 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
45 : If ALLOW_DMA is true, make DMA runtime selectable
46 : Folded in changes from Cirrus (Melody Lee
47 : <klee@crystal.cirrus.com>)
48 : Don't call netif_wake_queue() in net_send_packet()
49 : Fixed an out-of-mem bug in dma_rx()
50 : Updated Documentation/networking/cs89x0.txt
51
52 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre1
53 : Use skb_reserve to longword align IP header (two places)
54 : Remove a delay loop from dma_rx()
55 : Replace '100' with HZ
56 : Clean up a couple of skb API abuses
57 : Added 'cs89x0_dma=N' kernel boot option
58 : Correctly initialise lp->lock in non-module compile
59
60 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre4-1
61 : MOD_INC/DEC race fix (see
62 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
63
64 Andrew Morton : andrewm@uow.edu.au / Kernel 2.4.0-test7-pre2
65 : Enhanced EEPROM support to cover more devices,
66 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
67 : (Jason Gunthorpe <jgg@ualberta.ca>)
68
69 Andrew Morton : Kernel 2.4.0-test11-pre4
70 : Use dev->name in request_*() (Andrey Panin)
71 : Fix an error-path memleak in init_module()
72 : Preserve return value from request_irq()
73 : Fix type of `media' module parm (Keith Owens)
74 : Use SET_MODULE_OWNER()
75 : Tidied up strange request_irq() abuse in net_open().
76
77 Andrew Morton : Kernel 2.4.3-pre1
78 : Request correct number of pages for DMA (Hugh Dickens)
79 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
80 : because unregister_netdev() calls get_stats.
81 : Make `version[]' __initdata
82 : Uninlined the read/write reg/word functions.
83
84 Oskar Schirmer : oskar@scara.com
85 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
86
87 Deepak Saxena : dsaxena@plexity.net
88 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
89
90 Dmitry Pervushin : dpervushin@ru.mvista.com
91 : PNX010X platform support
92
93 Deepak Saxena : dsaxena@plexity.net
94 : Intel IXDP2351 platform support
95
96 Dmitry Pervushin : dpervushin@ru.mvista.com
97 : PNX010X platform support
98
99 */
100
101 /* Always include 'config.h' first in case the user wants to turn on
102 or override something. */
103 #include <linux/module.h>
104
105 /*
106 * Set this to zero to disable DMA code
107 *
108 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
109 * module options so we don't break any startup scripts.
110 */
111 #ifndef CONFIG_ISA_DMA_API
112 #define ALLOW_DMA 0
113 #else
114 #define ALLOW_DMA 1
115 #endif
116
117 /*
118 * Set this to zero to remove all the debug statements via
119 * dead code elimination
120 */
121 #define DEBUGGING 1
122
123 /*
124 Sources:
125
126 Crynwr packet driver epktisa.
127
128 Crystal Semiconductor data sheets.
129
130 */
131
132 #include <linux/errno.h>
133 #include <linux/netdevice.h>
134 #include <linux/etherdevice.h>
135 #include <linux/kernel.h>
136 #include <linux/types.h>
137 #include <linux/fcntl.h>
138 #include <linux/interrupt.h>
139 #include <linux/ioport.h>
140 #include <linux/in.h>
141 #include <linux/skbuff.h>
142 #include <linux/slab.h>
143 #include <linux/spinlock.h>
144 #include <linux/string.h>
145 #include <linux/init.h>
146 #include <linux/bitops.h>
147 #include <linux/delay.h>
148
149 #include <asm/system.h>
150 #include <asm/io.h>
151 #include <asm/irq.h>
152 #if ALLOW_DMA
153 #include <asm/dma.h>
154 #endif
155
156 #include "cs89x0.h"
157
158 static char version[] __initdata =
159 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n";
160
161 #define DRV_NAME "cs89x0"
162
163 /* First, a few definitions that the brave might change.
164 A zero-terminated list of I/O addresses to be probed. Some special flags..
165 Addr & 1 = Read back the address port, look for signature and reset
166 the page window before probing
167 Addr & 3 = Reset the page window and probe
168 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
169 but it is possible that a Cirrus board could be plugged into the ISA
170 slots. */
171 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
172 them to system IRQ numbers. This mapping is card specific and is set to
173 the configuration of the Cirrus Eval board for this chip. */
174 #ifdef CONFIG_ARCH_CLPS7500
175 static unsigned int netcard_portlist[] __initdata =
176 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
177 static unsigned int cs8900_irq_map[] = {12,0,0,0};
178 #elif defined(CONFIG_SH_HICOSH4)
179 static unsigned int netcard_portlist[] __initdata =
180 { 0x0300, 0};
181 static unsigned int cs8900_irq_map[] = {1,0,0,0};
182 #elif defined(CONFIG_MACH_IXDP2351)
183 static unsigned int netcard_portlist[] __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
184 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
185 #include <asm/irq.h>
186 #elif defined(CONFIG_ARCH_IXDP2X01)
187 #include <asm/irq.h>
188 static unsigned int netcard_portlist[] __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
189 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
190 #elif defined(CONFIG_ARCH_PNX010X)
191 #include <asm/irq.h>
192 #include <asm/arch/gpio.h>
193 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
194 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
195 static unsigned int netcard_portlist[] __initdata = {CIRRUS_DEFAULT_BASE, 0};
196 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
197 #else
198 static unsigned int netcard_portlist[] __initdata =
199 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
200 static unsigned int cs8900_irq_map[] = {10,11,12,5};
201 #endif
202
203 #if DEBUGGING
204 static unsigned int net_debug = DEBUGGING;
205 #else
206 #define net_debug 0 /* gcc will remove all the debug code for us */
207 #endif
208
209 /* The number of low I/O ports used by the ethercard. */
210 #define NETCARD_IO_EXTENT 16
211
212 /* we allow the user to override various values normally set in the EEPROM */
213 #define FORCE_RJ45 0x0001 /* pick one of these three */
214 #define FORCE_AUI 0x0002
215 #define FORCE_BNC 0x0004
216
217 #define FORCE_AUTO 0x0010 /* pick one of these three */
218 #define FORCE_HALF 0x0020
219 #define FORCE_FULL 0x0030
220
221 /* Information that need to be kept for each board. */
222 struct net_local {
223 struct net_device_stats stats;
224 int chip_type; /* one of: CS8900, CS8920, CS8920M */
225 char chip_revision; /* revision letter of the chip ('A'...) */
226 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
227 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
228 int adapter_cnf; /* adapter configuration from EEPROM */
229 int isa_config; /* ISA configuration from EEPROM */
230 int irq_map; /* IRQ map from EEPROM */
231 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
232 int curr_rx_cfg; /* a copy of PP_RxCFG */
233 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
234 int send_underrun; /* keep track of how many underruns in a row we get */
235 int force; /* force various values; see FORCE* above. */
236 spinlock_t lock;
237 #if ALLOW_DMA
238 int use_dma; /* Flag: we're using dma */
239 int dma; /* DMA channel */
240 int dmasize; /* 16 or 64 */
241 unsigned char *dma_buff; /* points to the beginning of the buffer */
242 unsigned char *end_dma_buff; /* points to the end of the buffer */
243 unsigned char *rx_dma_ptr; /* points to the next packet */
244 #endif
245 };
246
247 /* Index to functions, as function prototypes. */
248
249 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
250 static int net_open(struct net_device *dev);
251 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
252 static irqreturn_t net_interrupt(int irq, void *dev_id);
253 static void set_multicast_list(struct net_device *dev);
254 static void net_timeout(struct net_device *dev);
255 static void net_rx(struct net_device *dev);
256 static int net_close(struct net_device *dev);
257 static struct net_device_stats *net_get_stats(struct net_device *dev);
258 static void reset_chip(struct net_device *dev);
259 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
260 static int get_eeprom_cksum(int off, int len, int *buffer);
261 static int set_mac_address(struct net_device *dev, void *addr);
262 static void count_rx_errors(int status, struct net_local *lp);
263 #ifdef CONFIG_NET_POLL_CONTROLLER
264 static void net_poll_controller(struct net_device *dev);
265 #endif
266 #if ALLOW_DMA
267 static void get_dma_channel(struct net_device *dev);
268 static void release_dma_buff(struct net_local *lp);
269 #endif
270
271 /* Example routines you must write ;->. */
272 #define tx_done(dev) 1
273
274 /*
275 * Permit 'cs89x0_dma=N' in the kernel boot environment
276 */
277 #if !defined(MODULE) && (ALLOW_DMA != 0)
278 static int g_cs89x0_dma;
279
280 static int __init dma_fn(char *str)
281 {
282 g_cs89x0_dma = simple_strtol(str,NULL,0);
283 return 1;
284 }
285
286 __setup("cs89x0_dma=", dma_fn);
287 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
288
289 #ifndef MODULE
290 static int g_cs89x0_media__force;
291
292 static int __init media_fn(char *str)
293 {
294 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
295 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
296 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
297 return 1;
298 }
299
300 __setup("cs89x0_media=", media_fn);
301
302
303 /* Check for a network adaptor of this type, and return '0' iff one exists.
304 If dev->base_addr == 0, probe all likely locations.
305 If dev->base_addr == 1, always return failure.
306 If dev->base_addr == 2, allocate space for the device and return success
307 (detachable devices only).
308 Return 0 on success.
309 */
310
311 struct net_device * __init cs89x0_probe(int unit)
312 {
313 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
314 unsigned *port;
315 int err = 0;
316 int irq;
317 int io;
318
319 if (!dev)
320 return ERR_PTR(-ENODEV);
321
322 sprintf(dev->name, "eth%d", unit);
323 netdev_boot_setup_check(dev);
324 io = dev->base_addr;
325 irq = dev->irq;
326
327 if (net_debug)
328 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
329
330 if (io > 0x1ff) { /* Check a single specified location. */
331 err = cs89x0_probe1(dev, io, 0);
332 } else if (io != 0) { /* Don't probe at all. */
333 err = -ENXIO;
334 } else {
335 for (port = netcard_portlist; *port; port++) {
336 if (cs89x0_probe1(dev, *port, 0) == 0)
337 break;
338 dev->irq = irq;
339 }
340 if (!*port)
341 err = -ENODEV;
342 }
343 if (err)
344 goto out;
345 return dev;
346 out:
347 free_netdev(dev);
348 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
349 return ERR_PTR(err);
350 }
351 #endif
352
353 #if defined(CONFIG_MACH_IXDP2351)
354 static u16
355 readword(unsigned long base_addr, int portno)
356 {
357 return __raw_readw(base_addr + (portno << 1));
358 }
359
360 static void
361 writeword(unsigned long base_addr, int portno, u16 value)
362 {
363 __raw_writew(value, base_addr + (portno << 1));
364 }
365 #elif defined(CONFIG_ARCH_IXDP2X01)
366 static u16
367 readword(unsigned long base_addr, int portno)
368 {
369 return __raw_readl(base_addr + (portno << 1));
370 }
371
372 static void
373 writeword(unsigned long base_addr, int portno, u16 value)
374 {
375 __raw_writel(value, base_addr + (portno << 1));
376 }
377 #elif defined(CONFIG_ARCH_PNX010X)
378 static u16
379 readword(unsigned long base_addr, int portno)
380 {
381 return inw(base_addr + (portno << 1));
382 }
383
384 static void
385 writeword(unsigned long base_addr, int portno, u16 value)
386 {
387 outw(value, base_addr + (portno << 1));
388 }
389 #else
390 static u16
391 readword(unsigned long base_addr, int portno)
392 {
393 return inw(base_addr + portno);
394 }
395
396 static void
397 writeword(unsigned long base_addr, int portno, u16 value)
398 {
399 outw(value, base_addr + portno);
400 }
401 #endif
402
403 static void
404 readwords(unsigned long base_addr, int portno, void *buf, int length)
405 {
406 u8 *buf8 = (u8 *)buf;
407
408 do {
409 u16 tmp16;
410
411 tmp16 = readword(base_addr, portno);
412 *buf8++ = (u8)tmp16;
413 *buf8++ = (u8)(tmp16 >> 8);
414 } while (--length);
415 }
416
417 static void
418 writewords(unsigned long base_addr, int portno, void *buf, int length)
419 {
420 u8 *buf8 = (u8 *)buf;
421
422 do {
423 u16 tmp16;
424
425 tmp16 = *buf8++;
426 tmp16 |= (*buf8++) << 8;
427 writeword(base_addr, portno, tmp16);
428 } while (--length);
429 }
430
431 static u16
432 readreg(struct net_device *dev, u16 regno)
433 {
434 writeword(dev->base_addr, ADD_PORT, regno);
435 return readword(dev->base_addr, DATA_PORT);
436 }
437
438 static void
439 writereg(struct net_device *dev, u16 regno, u16 value)
440 {
441 writeword(dev->base_addr, ADD_PORT, regno);
442 writeword(dev->base_addr, DATA_PORT, value);
443 }
444
445 static int __init
446 wait_eeprom_ready(struct net_device *dev)
447 {
448 int timeout = jiffies;
449 /* check to see if the EEPROM is ready, a timeout is used -
450 just in case EEPROM is ready when SI_BUSY in the
451 PP_SelfST is clear */
452 while(readreg(dev, PP_SelfST) & SI_BUSY)
453 if (jiffies - timeout >= 40)
454 return -1;
455 return 0;
456 }
457
458 static int __init
459 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
460 {
461 int i;
462
463 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
464 for (i = 0; i < len; i++) {
465 if (wait_eeprom_ready(dev) < 0) return -1;
466 /* Now send the EEPROM read command and EEPROM location to read */
467 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
468 if (wait_eeprom_ready(dev) < 0) return -1;
469 buffer[i] = readreg(dev, PP_EEData);
470 if (net_debug > 3) printk("%04x ", buffer[i]);
471 }
472 if (net_debug > 3) printk("\n");
473 return 0;
474 }
475
476 static int __init
477 get_eeprom_cksum(int off, int len, int *buffer)
478 {
479 int i, cksum;
480
481 cksum = 0;
482 for (i = 0; i < len; i++)
483 cksum += buffer[i];
484 cksum &= 0xffff;
485 if (cksum == 0)
486 return 0;
487 return -1;
488 }
489
490 #ifdef CONFIG_NET_POLL_CONTROLLER
491 /*
492 * Polling receive - used by netconsole and other diagnostic tools
493 * to allow network i/o with interrupts disabled.
494 */
495 static void net_poll_controller(struct net_device *dev)
496 {
497 disable_irq(dev->irq);
498 net_interrupt(dev->irq, dev);
499 enable_irq(dev->irq);
500 }
501 #endif
502
503 /* This is the real probe routine. Linux has a history of friendly device
504 probes on the ISA bus. A good device probes avoids doing writes, and
505 verifies that the correct device exists and functions.
506 Return 0 on success.
507 */
508
509 static int __init
510 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
511 {
512 struct net_local *lp = netdev_priv(dev);
513 static unsigned version_printed;
514 int i;
515 int tmp;
516 unsigned rev_type = 0;
517 int eeprom_buff[CHKSUM_LEN];
518 int retval;
519
520 /* Initialize the device structure. */
521 if (!modular) {
522 memset(lp, 0, sizeof(*lp));
523 spin_lock_init(&lp->lock);
524 #ifndef MODULE
525 #if ALLOW_DMA
526 if (g_cs89x0_dma) {
527 lp->use_dma = 1;
528 lp->dma = g_cs89x0_dma;
529 lp->dmasize = 16; /* Could make this an option... */
530 }
531 #endif
532 lp->force = g_cs89x0_media__force;
533 #endif
534 }
535
536 #ifdef CONFIG_ARCH_PNX010X
537 initialize_ebi();
538
539 /* Map GPIO registers for the pins connected to the CS8900a. */
540 if (map_cirrus_gpio() < 0)
541 return -ENODEV;
542
543 reset_cirrus();
544
545 /* Map event-router registers. */
546 if (map_event_router() < 0)
547 return -ENODEV;
548
549 enable_cirrus_irq();
550
551 unmap_cirrus_gpio();
552 unmap_event_router();
553
554 dev->base_addr = ioaddr;
555
556 for (i = 0 ; i < 3 ; i++)
557 readreg(dev, 0);
558 #endif
559
560 /* Grab the region so we can find another board if autoIRQ fails. */
561 /* WTF is going on here? */
562 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
563 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
564 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
565 retval = -EBUSY;
566 goto out1;
567 }
568
569 #ifdef CONFIG_SH_HICOSH4
570 /* truely reset the chip */
571 writeword(ioaddr, ADD_PORT, 0x0114);
572 writeword(ioaddr, DATA_PORT, 0x0040);
573 #endif
574
575 /* if they give us an odd I/O address, then do ONE write to
576 the address port, to get it back to address zero, where we
577 expect to find the EISA signature word. An IO with a base of 0x3
578 will skip the test for the ADD_PORT. */
579 if (ioaddr & 1) {
580 if (net_debug > 1)
581 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
582 if ((ioaddr & 2) != 2)
583 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
584 printk(KERN_ERR "%s: bad signature 0x%x\n",
585 dev->name, readword(ioaddr & ~3, ADD_PORT));
586 retval = -ENODEV;
587 goto out2;
588 }
589 }
590
591 ioaddr &= ~3;
592 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
593 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
594 writeword(ioaddr, ADD_PORT, PP_ChipID);
595
596 tmp = readword(ioaddr, DATA_PORT);
597 if (tmp != CHIP_EISA_ID_SIG) {
598 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
599 CHIP_EISA_ID_SIG_STR "\n",
600 dev->name, ioaddr, DATA_PORT, tmp);
601 retval = -ENODEV;
602 goto out2;
603 }
604
605 /* Fill in the 'dev' fields. */
606 dev->base_addr = ioaddr;
607
608 /* get the chip type */
609 rev_type = readreg(dev, PRODUCT_ID_ADD);
610 lp->chip_type = rev_type &~ REVISON_BITS;
611 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
612
613 /* Check the chip type and revision in order to set the correct send command
614 CS8920 revision C and CS8900 revision F can use the faster send. */
615 lp->send_cmd = TX_AFTER_381;
616 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
617 lp->send_cmd = TX_NOW;
618 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
619 lp->send_cmd = TX_NOW;
620
621 if (net_debug && version_printed++ == 0)
622 printk(version);
623
624 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
625 dev->name,
626 lp->chip_type==CS8900?'0':'2',
627 lp->chip_type==CS8920M?"M":"",
628 lp->chip_revision,
629 dev->base_addr);
630
631 reset_chip(dev);
632
633 /* Here we read the current configuration of the chip. If there
634 is no Extended EEPROM then the idea is to not disturb the chip
635 configuration, it should have been correctly setup by automatic
636 EEPROM read on reset. So, if the chip says it read the EEPROM
637 the driver will always do *something* instead of complain that
638 adapter_cnf is 0. */
639
640 #ifdef CONFIG_SH_HICOSH4
641 if (1) {
642 /* For the HiCO.SH4 board, things are different: we don't
643 have EEPROM, but there is some data in flash, so we go
644 get it there directly (MAC). */
645 __u16 *confd;
646 short cnt;
647 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
648 == 0x006c3000) {
649 confd = (__u16*) 0xa0013fc0;
650 } else {
651 confd = (__u16*) 0xa001ffc0;
652 }
653 cnt = (*confd++ & 0x00ff) >> 1;
654 while (--cnt > 0) {
655 __u16 j = *confd++;
656
657 switch (j & 0x0fff) {
658 case PP_IA:
659 for (i = 0; i < ETH_ALEN/2; i++) {
660 dev->dev_addr[i*2] = confd[i] & 0xFF;
661 dev->dev_addr[i*2+1] = confd[i] >> 8;
662 }
663 break;
664 }
665 j = (j >> 12) + 1;
666 confd += j;
667 cnt -= j;
668 }
669 } else
670 #endif
671
672 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
673 (EEPROM_OK|EEPROM_PRESENT)) {
674 /* Load the MAC. */
675 for (i=0; i < ETH_ALEN/2; i++) {
676 unsigned int Addr;
677 Addr = readreg(dev, PP_IA+i*2);
678 dev->dev_addr[i*2] = Addr & 0xFF;
679 dev->dev_addr[i*2+1] = Addr >> 8;
680 }
681
682 /* Load the Adapter Configuration.
683 Note: Barring any more specific information from some
684 other source (ie EEPROM+Schematics), we would not know
685 how to operate a 10Base2 interface on the AUI port.
686 However, since we do read the status of HCB1 and use
687 settings that always result in calls to control_dc_dc(dev,0)
688 a BNC interface should work if the enable pin
689 (dc/dc converter) is on HCB1. It will be called AUI
690 however. */
691
692 lp->adapter_cnf = 0;
693 i = readreg(dev, PP_LineCTL);
694 /* Preserve the setting of the HCB1 pin. */
695 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
696 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
697 /* Save the sqelch bit */
698 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
699 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
700 /* Check if the card is in 10Base-t only mode */
701 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
702 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
703 /* Check if the card is in AUI only mode */
704 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
705 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
706 /* Check if the card is in Auto mode. */
707 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
708 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
709 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
710
711 if (net_debug > 1)
712 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
713 dev->name, i, lp->adapter_cnf);
714
715 /* IRQ. Other chips already probe, see below. */
716 if (lp->chip_type == CS8900)
717 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
718
719 printk( "[Cirrus EEPROM] ");
720 }
721
722 printk("\n");
723
724 /* First check to see if an EEPROM is attached. */
725 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
726 if (1) {
727 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
728 } else
729 #endif
730 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
731 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
732 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
733 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
734 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
735 /* Check if the chip was able to read its own configuration starting
736 at 0 in the EEPROM*/
737 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
738 (EEPROM_OK|EEPROM_PRESENT))
739 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
740
741 } else {
742 /* This reads an extended EEPROM that is not documented
743 in the CS8900 datasheet. */
744
745 /* get transmission control word but keep the autonegotiation bits */
746 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
747 /* Store adapter configuration */
748 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
749 /* Store ISA configuration */
750 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
751 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
752
753 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
754 /* store the initial memory base address */
755 for (i = 0; i < ETH_ALEN/2; i++) {
756 dev->dev_addr[i*2] = eeprom_buff[i];
757 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
758 }
759 if (net_debug > 1)
760 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
761 dev->name, lp->adapter_cnf);
762 }
763
764 /* allow them to force multiple transceivers. If they force multiple, autosense */
765 {
766 int count = 0;
767 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
768 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
769 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
770 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
771 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
772 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
773 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
774 }
775
776 if (net_debug > 1)
777 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
778 dev->name, lp->force, lp->adapter_cnf);
779
780 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
781
782 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
783
784 /* FIXME: we don't set the Ethernet address on the command line. Use
785 ifconfig IFACE hw ether AABBCCDDEEFF */
786
787 printk(KERN_INFO "cs89x0 media %s%s%s",
788 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
789 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
790 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
791
792 lp->irq_map = 0xffff;
793
794 /* If this is a CS8900 then no pnp soft */
795 if (lp->chip_type != CS8900 &&
796 /* Check if the ISA IRQ has been set */
797 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
798 (i != 0 && i < CS8920_NO_INTS))) {
799 if (!dev->irq)
800 dev->irq = i;
801 } else {
802 i = lp->isa_config & INT_NO_MASK;
803 if (lp->chip_type == CS8900) {
804 #if defined(CONFIG_MACH_IXDP2351) || defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX010X)
805 i = cs8900_irq_map[0];
806 #else
807 /* Translate the IRQ using the IRQ mapping table. */
808 if (i >= sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
809 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
810 else
811 i = cs8900_irq_map[i];
812
813 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
814 } else {
815 int irq_map_buff[IRQ_MAP_LEN/2];
816
817 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
818 IRQ_MAP_LEN/2,
819 irq_map_buff) >= 0) {
820 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
821 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
822 }
823 #endif
824 }
825 if (!dev->irq)
826 dev->irq = i;
827 }
828
829 printk(" IRQ %d", dev->irq);
830
831 #if ALLOW_DMA
832 if (lp->use_dma) {
833 get_dma_channel(dev);
834 printk(", DMA %d", dev->dma);
835 }
836 else
837 #endif
838 {
839 printk(", programmed I/O");
840 }
841
842 /* print the ethernet address. */
843 printk(", MAC");
844 for (i = 0; i < ETH_ALEN; i++)
845 {
846 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
847 }
848
849 dev->open = net_open;
850 dev->stop = net_close;
851 dev->tx_timeout = net_timeout;
852 dev->watchdog_timeo = HZ;
853 dev->hard_start_xmit = net_send_packet;
854 dev->get_stats = net_get_stats;
855 dev->set_multicast_list = set_multicast_list;
856 dev->set_mac_address = set_mac_address;
857 #ifdef CONFIG_NET_POLL_CONTROLLER
858 dev->poll_controller = net_poll_controller;
859 #endif
860
861 printk("\n");
862 if (net_debug)
863 printk("cs89x0_probe1() successful\n");
864
865 retval = register_netdev(dev);
866 if (retval)
867 goto out3;
868 return 0;
869 out3:
870 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
871 out2:
872 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
873 out1:
874 return retval;
875 }
876
877
878 /*********************************
879 * This page contains DMA routines
880 **********************************/
881
882 #if ALLOW_DMA
883
884 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
885
886 static void
887 get_dma_channel(struct net_device *dev)
888 {
889 struct net_local *lp = netdev_priv(dev);
890
891 if (lp->dma) {
892 dev->dma = lp->dma;
893 lp->isa_config |= ISA_RxDMA;
894 } else {
895 if ((lp->isa_config & ANY_ISA_DMA) == 0)
896 return;
897 dev->dma = lp->isa_config & DMA_NO_MASK;
898 if (lp->chip_type == CS8900)
899 dev->dma += 5;
900 if (dev->dma < 5 || dev->dma > 7) {
901 lp->isa_config &= ~ANY_ISA_DMA;
902 return;
903 }
904 }
905 return;
906 }
907
908 static void
909 write_dma(struct net_device *dev, int chip_type, int dma)
910 {
911 struct net_local *lp = netdev_priv(dev);
912 if ((lp->isa_config & ANY_ISA_DMA) == 0)
913 return;
914 if (chip_type == CS8900) {
915 writereg(dev, PP_CS8900_ISADMA, dma-5);
916 } else {
917 writereg(dev, PP_CS8920_ISADMA, dma);
918 }
919 }
920
921 static void
922 set_dma_cfg(struct net_device *dev)
923 {
924 struct net_local *lp = netdev_priv(dev);
925
926 if (lp->use_dma) {
927 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
928 if (net_debug > 3)
929 printk("set_dma_cfg(): no DMA\n");
930 return;
931 }
932 if (lp->isa_config & ISA_RxDMA) {
933 lp->curr_rx_cfg |= RX_DMA_ONLY;
934 if (net_debug > 3)
935 printk("set_dma_cfg(): RX_DMA_ONLY\n");
936 } else {
937 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
938 if (net_debug > 3)
939 printk("set_dma_cfg(): AUTO_RX_DMA\n");
940 }
941 }
942 }
943
944 static int
945 dma_bufcfg(struct net_device *dev)
946 {
947 struct net_local *lp = netdev_priv(dev);
948 if (lp->use_dma)
949 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
950 else
951 return 0;
952 }
953
954 static int
955 dma_busctl(struct net_device *dev)
956 {
957 int retval = 0;
958 struct net_local *lp = netdev_priv(dev);
959 if (lp->use_dma) {
960 if (lp->isa_config & ANY_ISA_DMA)
961 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
962 if (lp->isa_config & DMA_BURST)
963 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
964 if (lp->dmasize == 64)
965 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
966 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
967 }
968 return retval;
969 }
970
971 static void
972 dma_rx(struct net_device *dev)
973 {
974 struct net_local *lp = netdev_priv(dev);
975 struct sk_buff *skb;
976 int status, length;
977 unsigned char *bp = lp->rx_dma_ptr;
978
979 status = bp[0] + (bp[1]<<8);
980 length = bp[2] + (bp[3]<<8);
981 bp += 4;
982 if (net_debug > 5) {
983 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
984 dev->name, (unsigned long)bp, status, length);
985 }
986 if ((status & RX_OK) == 0) {
987 count_rx_errors(status, lp);
988 goto skip_this_frame;
989 }
990
991 /* Malloc up new buffer. */
992 skb = dev_alloc_skb(length + 2);
993 if (skb == NULL) {
994 if (net_debug) /* I don't think we want to do this to a stressed system */
995 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
996 lp->stats.rx_dropped++;
997
998 /* AKPM: advance bp to the next frame */
999 skip_this_frame:
1000 bp += (length + 3) & ~3;
1001 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1002 lp->rx_dma_ptr = bp;
1003 return;
1004 }
1005 skb_reserve(skb, 2); /* longword align L3 header */
1006
1007 if (bp + length > lp->end_dma_buff) {
1008 int semi_cnt = lp->end_dma_buff - bp;
1009 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
1010 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
1011 length - semi_cnt);
1012 } else {
1013 memcpy(skb_put(skb,length), bp, length);
1014 }
1015 bp += (length + 3) & ~3;
1016 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1017 lp->rx_dma_ptr = bp;
1018
1019 if (net_debug > 3) {
1020 printk( "%s: received %d byte DMA packet of type %x\n",
1021 dev->name, length,
1022 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1023 }
1024 skb->protocol=eth_type_trans(skb,dev);
1025 netif_rx(skb);
1026 dev->last_rx = jiffies;
1027 lp->stats.rx_packets++;
1028 lp->stats.rx_bytes += length;
1029 }
1030
1031 #endif /* ALLOW_DMA */
1032
1033 void __init reset_chip(struct net_device *dev)
1034 {
1035 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1036 struct net_local *lp = netdev_priv(dev);
1037 int ioaddr = dev->base_addr;
1038 #endif
1039 int reset_start_time;
1040
1041 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1042
1043 /* wait 30 ms */
1044 msleep(30);
1045
1046 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1047 if (lp->chip_type != CS8900) {
1048 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1049 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1050 outb(dev->irq, ioaddr + DATA_PORT);
1051 outb(0, ioaddr + DATA_PORT + 1);
1052
1053 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1054 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1055 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1056 }
1057 #endif /* IXDP2x01 */
1058
1059 /* Wait until the chip is reset */
1060 reset_start_time = jiffies;
1061 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1062 ;
1063 }
1064
1065
1066 static void
1067 control_dc_dc(struct net_device *dev, int on_not_off)
1068 {
1069 struct net_local *lp = netdev_priv(dev);
1070 unsigned int selfcontrol;
1071 int timenow = jiffies;
1072 /* control the DC to DC convertor in the SelfControl register.
1073 Note: This is hooked up to a general purpose pin, might not
1074 always be a DC to DC convertor. */
1075
1076 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1077 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1078 selfcontrol |= HCB1;
1079 else
1080 selfcontrol &= ~HCB1;
1081 writereg(dev, PP_SelfCTL, selfcontrol);
1082
1083 /* Wait for the DC/DC converter to power up - 500ms */
1084 while (jiffies - timenow < HZ)
1085 ;
1086 }
1087
1088 #define DETECTED_NONE 0
1089 #define DETECTED_RJ45H 1
1090 #define DETECTED_RJ45F 2
1091 #define DETECTED_AUI 3
1092 #define DETECTED_BNC 4
1093
1094 static int
1095 detect_tp(struct net_device *dev)
1096 {
1097 struct net_local *lp = netdev_priv(dev);
1098 int timenow = jiffies;
1099 int fdx;
1100
1101 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1102
1103 /* If connected to another full duplex capable 10-Base-T card the link pulses
1104 seem to be lost when the auto detect bit in the LineCTL is set.
1105 To overcome this the auto detect bit will be cleared whilst testing the
1106 10-Base-T interface. This would not be necessary for the sparrow chip but
1107 is simpler to do it anyway. */
1108 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1109 control_dc_dc(dev, 0);
1110
1111 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1112 for (timenow = jiffies; jiffies - timenow < 15; )
1113 ;
1114 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1115 return DETECTED_NONE;
1116
1117 if (lp->chip_type == CS8900) {
1118 switch (lp->force & 0xf0) {
1119 #if 0
1120 case FORCE_AUTO:
1121 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1122 return DETECTED_NONE;
1123 #endif
1124 /* CS8900 doesn't support AUTO, change to HALF*/
1125 case FORCE_AUTO:
1126 lp->force &= ~FORCE_AUTO;
1127 lp->force |= FORCE_HALF;
1128 break;
1129 case FORCE_HALF:
1130 break;
1131 case FORCE_FULL:
1132 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1133 break;
1134 }
1135 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1136 } else {
1137 switch (lp->force & 0xf0) {
1138 case FORCE_AUTO:
1139 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1140 break;
1141 case FORCE_HALF:
1142 lp->auto_neg_cnf = 0;
1143 break;
1144 case FORCE_FULL:
1145 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1146 break;
1147 }
1148
1149 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1150
1151 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1152 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1153 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1154 if (jiffies - timenow > 4000) {
1155 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1156 break;
1157 }
1158 }
1159 }
1160 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1161 }
1162 if (fdx)
1163 return DETECTED_RJ45F;
1164 else
1165 return DETECTED_RJ45H;
1166 }
1167
1168 /* send a test packet - return true if carrier bits are ok */
1169 static int
1170 send_test_pkt(struct net_device *dev)
1171 {
1172 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1173 0, 46, /* A 46 in network order */
1174 0, 0, /* DSAP=0 & SSAP=0 fields */
1175 0xf3, 0 /* Control (Test Req + P bit set) */ };
1176 long timenow = jiffies;
1177
1178 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1179
1180 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1181 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1182
1183 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1184 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1185
1186 /* Test to see if the chip has allocated memory for the packet */
1187 while (jiffies - timenow < 5)
1188 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1189 break;
1190 if (jiffies - timenow >= 5)
1191 return 0; /* this shouldn't happen */
1192
1193 /* Write the contents of the packet */
1194 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1195
1196 if (net_debug > 1) printk("Sending test packet ");
1197 /* wait a couple of jiffies for packet to be received */
1198 for (timenow = jiffies; jiffies - timenow < 3; )
1199 ;
1200 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1201 if (net_debug > 1) printk("succeeded\n");
1202 return 1;
1203 }
1204 if (net_debug > 1) printk("failed\n");
1205 return 0;
1206 }
1207
1208
1209 static int
1210 detect_aui(struct net_device *dev)
1211 {
1212 struct net_local *lp = netdev_priv(dev);
1213
1214 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1215 control_dc_dc(dev, 0);
1216
1217 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1218
1219 if (send_test_pkt(dev))
1220 return DETECTED_AUI;
1221 else
1222 return DETECTED_NONE;
1223 }
1224
1225 static int
1226 detect_bnc(struct net_device *dev)
1227 {
1228 struct net_local *lp = netdev_priv(dev);
1229
1230 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1231 control_dc_dc(dev, 1);
1232
1233 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1234
1235 if (send_test_pkt(dev))
1236 return DETECTED_BNC;
1237 else
1238 return DETECTED_NONE;
1239 }
1240
1241
1242 static void
1243 write_irq(struct net_device *dev, int chip_type, int irq)
1244 {
1245 int i;
1246
1247 if (chip_type == CS8900) {
1248 /* Search the mapping table for the corresponding IRQ pin. */
1249 for (i = 0; i != sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]); i++)
1250 if (cs8900_irq_map[i] == irq)
1251 break;
1252 /* Not found */
1253 if (i == sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
1254 i = 3;
1255 writereg(dev, PP_CS8900_ISAINT, i);
1256 } else {
1257 writereg(dev, PP_CS8920_ISAINT, irq);
1258 }
1259 }
1260
1261 /* Open/initialize the board. This is called (in the current kernel)
1262 sometime after booting when the 'ifconfig' program is run.
1263
1264 This routine should set everything up anew at each open, even
1265 registers that "should" only need to be set once at boot, so that
1266 there is non-reboot way to recover if something goes wrong.
1267 */
1268
1269 /* AKPM: do we need to do any locking here? */
1270
1271 static int
1272 net_open(struct net_device *dev)
1273 {
1274 struct net_local *lp = netdev_priv(dev);
1275 int result = 0;
1276 int i;
1277 int ret;
1278
1279 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1280 if (dev->irq < 2) {
1281 /* Allow interrupts to be generated by the chip */
1282 /* Cirrus' release had this: */
1283 #if 0
1284 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1285 #endif
1286 /* And 2.3.47 had this: */
1287 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1288
1289 for (i = 2; i < CS8920_NO_INTS; i++) {
1290 if ((1 << i) & lp->irq_map) {
1291 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1292 dev->irq = i;
1293 write_irq(dev, lp->chip_type, i);
1294 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1295 break;
1296 }
1297 }
1298 }
1299
1300 if (i >= CS8920_NO_INTS) {
1301 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1302 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1303 ret = -EAGAIN;
1304 goto bad_out;
1305 }
1306 }
1307 else
1308 #endif
1309 {
1310 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX010X)
1311 if (((1 << dev->irq) & lp->irq_map) == 0) {
1312 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1313 dev->name, dev->irq, lp->irq_map);
1314 ret = -EAGAIN;
1315 goto bad_out;
1316 }
1317 #endif
1318 /* FIXME: Cirrus' release had this: */
1319 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1320 /* And 2.3.47 had this: */
1321 #if 0
1322 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1323 #endif
1324 write_irq(dev, lp->chip_type, dev->irq);
1325 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1326 if (ret) {
1327 if (net_debug)
1328 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1329 goto bad_out;
1330 }
1331 }
1332
1333 #if ALLOW_DMA
1334 if (lp->use_dma) {
1335 if (lp->isa_config & ANY_ISA_DMA) {
1336 unsigned long flags;
1337 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1338 get_order(lp->dmasize * 1024));
1339
1340 if (!lp->dma_buff) {
1341 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1342 goto release_irq;
1343 }
1344 if (net_debug > 1) {
1345 printk( "%s: dma %lx %lx\n",
1346 dev->name,
1347 (unsigned long)lp->dma_buff,
1348 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1349 }
1350 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1351 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1352 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1353 goto release_irq;
1354 }
1355 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1356 if (request_dma(dev->dma, dev->name)) {
1357 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1358 goto release_irq;
1359 }
1360 write_dma(dev, lp->chip_type, dev->dma);
1361 lp->rx_dma_ptr = lp->dma_buff;
1362 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1363 spin_lock_irqsave(&lp->lock, flags);
1364 disable_dma(dev->dma);
1365 clear_dma_ff(dev->dma);
1366 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1367 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1368 set_dma_count(dev->dma, lp->dmasize*1024);
1369 enable_dma(dev->dma);
1370 spin_unlock_irqrestore(&lp->lock, flags);
1371 }
1372 }
1373 #endif /* ALLOW_DMA */
1374
1375 /* set the Ethernet address */
1376 for (i=0; i < ETH_ALEN/2; i++)
1377 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1378
1379 /* while we're testing the interface, leave interrupts disabled */
1380 writereg(dev, PP_BusCTL, MEMORY_ON);
1381
1382 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1383 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1384 lp->linectl = LOW_RX_SQUELCH;
1385 else
1386 lp->linectl = 0;
1387
1388 /* check to make sure that they have the "right" hardware available */
1389 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1390 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1391 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1392 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1393 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1394 }
1395 #ifdef CONFIG_ARCH_PNX010X
1396 result = A_CNF_10B_T;
1397 #endif
1398 if (!result) {
1399 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1400 release_irq:
1401 #if ALLOW_DMA
1402 release_dma_buff(lp);
1403 #endif
1404 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1405 free_irq(dev->irq, dev);
1406 ret = -EAGAIN;
1407 goto bad_out;
1408 }
1409
1410 /* set the hardware to the configured choice */
1411 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1412 case A_CNF_MEDIA_10B_T:
1413 result = detect_tp(dev);
1414 if (result==DETECTED_NONE) {
1415 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1416 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1417 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1418 }
1419 break;
1420 case A_CNF_MEDIA_AUI:
1421 result = detect_aui(dev);
1422 if (result==DETECTED_NONE) {
1423 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1424 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1425 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1426 }
1427 break;
1428 case A_CNF_MEDIA_10B_2:
1429 result = detect_bnc(dev);
1430 if (result==DETECTED_NONE) {
1431 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1432 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1433 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1434 }
1435 break;
1436 case A_CNF_MEDIA_AUTO:
1437 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1438 if (lp->adapter_cnf & A_CNF_10B_T)
1439 if ((result = detect_tp(dev)) != DETECTED_NONE)
1440 break;
1441 if (lp->adapter_cnf & A_CNF_AUI)
1442 if ((result = detect_aui(dev)) != DETECTED_NONE)
1443 break;
1444 if (lp->adapter_cnf & A_CNF_10B_2)
1445 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1446 break;
1447 printk(KERN_ERR "%s: no media detected\n", dev->name);
1448 goto release_irq;
1449 }
1450 switch(result) {
1451 case DETECTED_NONE:
1452 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1453 goto release_irq;
1454 case DETECTED_RJ45H:
1455 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1456 break;
1457 case DETECTED_RJ45F:
1458 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1459 break;
1460 case DETECTED_AUI:
1461 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1462 break;
1463 case DETECTED_BNC:
1464 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1465 break;
1466 }
1467
1468 /* Turn on both receive and transmit operations */
1469 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1470
1471 /* Receive only error free packets addressed to this card */
1472 lp->rx_mode = 0;
1473 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1474
1475 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1476
1477 if (lp->isa_config & STREAM_TRANSFER)
1478 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1479 #if ALLOW_DMA
1480 set_dma_cfg(dev);
1481 #endif
1482 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1483
1484 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1485 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1486
1487 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1488 #if ALLOW_DMA
1489 dma_bufcfg(dev) |
1490 #endif
1491 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1492
1493 /* now that we've got our act together, enable everything */
1494 writereg(dev, PP_BusCTL, ENABLE_IRQ
1495 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1496 #if ALLOW_DMA
1497 | dma_busctl(dev)
1498 #endif
1499 );
1500 netif_start_queue(dev);
1501 if (net_debug > 1)
1502 printk("cs89x0: net_open() succeeded\n");
1503 return 0;
1504 bad_out:
1505 return ret;
1506 }
1507
1508 static void net_timeout(struct net_device *dev)
1509 {
1510 /* If we get here, some higher level has decided we are broken.
1511 There should really be a "kick me" function call instead. */
1512 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1513 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1514 /* Try to restart the adaptor. */
1515 netif_wake_queue(dev);
1516 }
1517
1518 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1519 {
1520 struct net_local *lp = netdev_priv(dev);
1521
1522 if (net_debug > 3) {
1523 printk("%s: sent %d byte packet of type %x\n",
1524 dev->name, skb->len,
1525 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1526 }
1527
1528 /* keep the upload from being interrupted, since we
1529 ask the chip to start transmitting before the
1530 whole packet has been completely uploaded. */
1531
1532 spin_lock_irq(&lp->lock);
1533 netif_stop_queue(dev);
1534
1535 /* initiate a transmit sequence */
1536 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1537 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1538
1539 /* Test to see if the chip has allocated memory for the packet */
1540 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1541 /*
1542 * Gasp! It hasn't. But that shouldn't happen since
1543 * we're waiting for TxOk, so return 1 and requeue this packet.
1544 */
1545
1546 spin_unlock_irq(&lp->lock);
1547 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1548 return 1;
1549 }
1550 /* Write the contents of the packet */
1551 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1552 spin_unlock_irq(&lp->lock);
1553 lp->stats.tx_bytes += skb->len;
1554 dev->trans_start = jiffies;
1555 dev_kfree_skb (skb);
1556
1557 /*
1558 * We DO NOT call netif_wake_queue() here.
1559 * We also DO NOT call netif_start_queue().
1560 *
1561 * Either of these would cause another bottom half run through
1562 * net_send_packet() before this packet has fully gone out. That causes
1563 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1564 * a dog. We just return and wait for the Tx completion interrupt handler
1565 * to restart the netdevice layer
1566 */
1567
1568 return 0;
1569 }
1570
1571 /* The typical workload of the driver:
1572 Handle the network interface interrupts. */
1573
1574 static irqreturn_t net_interrupt(int irq, void *dev_id)
1575 {
1576 struct net_device *dev = dev_id;
1577 struct net_local *lp;
1578 int ioaddr, status;
1579 int handled = 0;
1580
1581 ioaddr = dev->base_addr;
1582 lp = netdev_priv(dev);
1583
1584 /* we MUST read all the events out of the ISQ, otherwise we'll never
1585 get interrupted again. As a consequence, we can't have any limit
1586 on the number of times we loop in the interrupt handler. The
1587 hardware guarantees that eventually we'll run out of events. Of
1588 course, if you're on a slow machine, and packets are arriving
1589 faster than you can read them off, you're screwed. Hasta la
1590 vista, baby! */
1591 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1592 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1593 handled = 1;
1594 switch(status & ISQ_EVENT_MASK) {
1595 case ISQ_RECEIVER_EVENT:
1596 /* Got a packet(s). */
1597 net_rx(dev);
1598 break;
1599 case ISQ_TRANSMITTER_EVENT:
1600 lp->stats.tx_packets++;
1601 netif_wake_queue(dev); /* Inform upper layers. */
1602 if ((status & ( TX_OK |
1603 TX_LOST_CRS |
1604 TX_SQE_ERROR |
1605 TX_LATE_COL |
1606 TX_16_COL)) != TX_OK) {
1607 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1608 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1609 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1610 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1611 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1612 }
1613 break;
1614 case ISQ_BUFFER_EVENT:
1615 if (status & READY_FOR_TX) {
1616 /* we tried to transmit a packet earlier,
1617 but inexplicably ran out of buffers.
1618 That shouldn't happen since we only ever
1619 load one packet. Shrug. Do the right
1620 thing anyway. */
1621 netif_wake_queue(dev); /* Inform upper layers. */
1622 }
1623 if (status & TX_UNDERRUN) {
1624 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1625 lp->send_underrun++;
1626 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1627 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1628 /* transmit cycle is done, although
1629 frame wasn't transmitted - this
1630 avoids having to wait for the upper
1631 layers to timeout on us, in the
1632 event of a tx underrun */
1633 netif_wake_queue(dev); /* Inform upper layers. */
1634 }
1635 #if ALLOW_DMA
1636 if (lp->use_dma && (status & RX_DMA)) {
1637 int count = readreg(dev, PP_DmaFrameCnt);
1638 while(count) {
1639 if (net_debug > 5)
1640 printk("%s: receiving %d DMA frames\n", dev->name, count);
1641 if (net_debug > 2 && count >1)
1642 printk("%s: receiving %d DMA frames\n", dev->name, count);
1643 dma_rx(dev);
1644 if (--count == 0)
1645 count = readreg(dev, PP_DmaFrameCnt);
1646 if (net_debug > 2 && count > 0)
1647 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1648 }
1649 }
1650 #endif
1651 break;
1652 case ISQ_RX_MISS_EVENT:
1653 lp->stats.rx_missed_errors += (status >>6);
1654 break;
1655 case ISQ_TX_COL_EVENT:
1656 lp->stats.collisions += (status >>6);
1657 break;
1658 }
1659 }
1660 return IRQ_RETVAL(handled);
1661 }
1662
1663 static void
1664 count_rx_errors(int status, struct net_local *lp)
1665 {
1666 lp->stats.rx_errors++;
1667 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1668 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1669 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1670 /* per str 172 */
1671 lp->stats.rx_crc_errors++;
1672 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1673 return;
1674 }
1675
1676 /* We have a good packet(s), get it/them out of the buffers. */
1677 static void
1678 net_rx(struct net_device *dev)
1679 {
1680 struct net_local *lp = netdev_priv(dev);
1681 struct sk_buff *skb;
1682 int status, length;
1683
1684 int ioaddr = dev->base_addr;
1685 status = readword(ioaddr, RX_FRAME_PORT);
1686 length = readword(ioaddr, RX_FRAME_PORT);
1687
1688 if ((status & RX_OK) == 0) {
1689 count_rx_errors(status, lp);
1690 return;
1691 }
1692
1693 /* Malloc up new buffer. */
1694 skb = dev_alloc_skb(length + 2);
1695 if (skb == NULL) {
1696 #if 0 /* Again, this seems a cruel thing to do */
1697 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1698 #endif
1699 lp->stats.rx_dropped++;
1700 return;
1701 }
1702 skb_reserve(skb, 2); /* longword align L3 header */
1703
1704 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1705 if (length & 1)
1706 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1707
1708 if (net_debug > 3) {
1709 printk( "%s: received %d byte packet of type %x\n",
1710 dev->name, length,
1711 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1712 }
1713
1714 skb->protocol=eth_type_trans(skb,dev);
1715 netif_rx(skb);
1716 dev->last_rx = jiffies;
1717 lp->stats.rx_packets++;
1718 lp->stats.rx_bytes += length;
1719 }
1720
1721 #if ALLOW_DMA
1722 static void release_dma_buff(struct net_local *lp)
1723 {
1724 if (lp->dma_buff) {
1725 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1726 lp->dma_buff = NULL;
1727 }
1728 }
1729 #endif
1730
1731 /* The inverse routine to net_open(). */
1732 static int
1733 net_close(struct net_device *dev)
1734 {
1735 #if ALLOW_DMA
1736 struct net_local *lp = netdev_priv(dev);
1737 #endif
1738
1739 netif_stop_queue(dev);
1740
1741 writereg(dev, PP_RxCFG, 0);
1742 writereg(dev, PP_TxCFG, 0);
1743 writereg(dev, PP_BufCFG, 0);
1744 writereg(dev, PP_BusCTL, 0);
1745
1746 free_irq(dev->irq, dev);
1747
1748 #if ALLOW_DMA
1749 if (lp->use_dma && lp->dma) {
1750 free_dma(dev->dma);
1751 release_dma_buff(lp);
1752 }
1753 #endif
1754
1755 /* Update the statistics here. */
1756 return 0;
1757 }
1758
1759 /* Get the current statistics. This may be called with the card open or
1760 closed. */
1761 static struct net_device_stats *
1762 net_get_stats(struct net_device *dev)
1763 {
1764 struct net_local *lp = netdev_priv(dev);
1765 unsigned long flags;
1766
1767 spin_lock_irqsave(&lp->lock, flags);
1768 /* Update the statistics from the device registers. */
1769 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1770 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1771 spin_unlock_irqrestore(&lp->lock, flags);
1772
1773 return &lp->stats;
1774 }
1775
1776 static void set_multicast_list(struct net_device *dev)
1777 {
1778 struct net_local *lp = netdev_priv(dev);
1779 unsigned long flags;
1780
1781 spin_lock_irqsave(&lp->lock, flags);
1782 if(dev->flags&IFF_PROMISC)
1783 {
1784 lp->rx_mode = RX_ALL_ACCEPT;
1785 }
1786 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1787 {
1788 /* The multicast-accept list is initialized to accept-all, and we
1789 rely on higher-level filtering for now. */
1790 lp->rx_mode = RX_MULTCAST_ACCEPT;
1791 }
1792 else
1793 lp->rx_mode = 0;
1794
1795 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1796
1797 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1798 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1799 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1800 spin_unlock_irqrestore(&lp->lock, flags);
1801 }
1802
1803
1804 static int set_mac_address(struct net_device *dev, void *p)
1805 {
1806 int i;
1807 struct sockaddr *addr = p;
1808
1809
1810 if (netif_running(dev))
1811 return -EBUSY;
1812
1813 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1814
1815 if (net_debug) {
1816 printk("%s: Setting MAC address to ", dev->name);
1817 for (i = 0; i < dev->addr_len; i++)
1818 printk(" %2.2x", dev->dev_addr[i]);
1819 printk(".\n");
1820 }
1821 /* set the Ethernet address */
1822 for (i=0; i < ETH_ALEN/2; i++)
1823 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1824
1825 return 0;
1826 }
1827
1828 #ifdef MODULE
1829
1830 static struct net_device *dev_cs89x0;
1831
1832 /*
1833 * Support the 'debug' module parm even if we're compiled for non-debug to
1834 * avoid breaking someone's startup scripts
1835 */
1836
1837 static int io;
1838 static int irq;
1839 static int debug;
1840 static char media[8];
1841 static int duplex=-1;
1842
1843 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1844 static int dma;
1845 static int dmasize=16; /* or 64 */
1846
1847 module_param(io, int, 0);
1848 module_param(irq, int, 0);
1849 module_param(debug, int, 0);
1850 module_param_string(media, media, sizeof(media), 0);
1851 module_param(duplex, int, 0);
1852 module_param(dma , int, 0);
1853 module_param(dmasize , int, 0);
1854 module_param(use_dma , int, 0);
1855 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1856 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1857 #if DEBUGGING
1858 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1859 #else
1860 MODULE_PARM_DESC(debug, "(ignored)");
1861 #endif
1862 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1863 /* No other value than -1 for duplex seems to be currently interpreted */
1864 MODULE_PARM_DESC(duplex, "(ignored)");
1865 #if ALLOW_DMA
1866 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1867 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1868 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1869 #else
1870 MODULE_PARM_DESC(dma , "(ignored)");
1871 MODULE_PARM_DESC(dmasize , "(ignored)");
1872 MODULE_PARM_DESC(use_dma , "(ignored)");
1873 #endif
1874
1875 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
1876 MODULE_LICENSE("GPL");
1877
1878
1879 /*
1880 * media=t - specify media type
1881 or media=2
1882 or media=aui
1883 or medai=auto
1884 * duplex=0 - specify forced half/full/autonegotiate duplex
1885 * debug=# - debug level
1886
1887
1888 * Default Chip Configuration:
1889 * DMA Burst = enabled
1890 * IOCHRDY Enabled = enabled
1891 * UseSA = enabled
1892 * CS8900 defaults to half-duplex if not specified on command-line
1893 * CS8920 defaults to autoneg if not specified on command-line
1894 * Use reset defaults for other config parameters
1895
1896 * Assumptions:
1897 * media type specified is supported (circuitry is present)
1898 * if memory address is > 1MB, then required mem decode hw is present
1899 * if 10B-2, then agent other than driver will enable DC/DC converter
1900 (hw or software util)
1901
1902
1903 */
1904
1905 int __init init_module(void)
1906 {
1907 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1908 struct net_local *lp;
1909 int ret = 0;
1910
1911 #if DEBUGGING
1912 net_debug = debug;
1913 #else
1914 debug = 0;
1915 #endif
1916 if (!dev)
1917 return -ENOMEM;
1918
1919 dev->irq = irq;
1920 dev->base_addr = io;
1921 lp = netdev_priv(dev);
1922
1923 #if ALLOW_DMA
1924 if (use_dma) {
1925 lp->use_dma = use_dma;
1926 lp->dma = dma;
1927 lp->dmasize = dmasize;
1928 }
1929 #endif
1930
1931 spin_lock_init(&lp->lock);
1932
1933 /* boy, they'd better get these right */
1934 if (!strcmp(media, "rj45"))
1935 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1936 else if (!strcmp(media, "aui"))
1937 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1938 else if (!strcmp(media, "bnc"))
1939 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1940 else
1941 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1942
1943 if (duplex==-1)
1944 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1945
1946 if (io == 0) {
1947 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1948 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1949 ret = -EPERM;
1950 goto out;
1951 } else if (io <= 0x1ff) {
1952 ret = -ENXIO;
1953 goto out;
1954 }
1955
1956 #if ALLOW_DMA
1957 if (use_dma && dmasize != 16 && dmasize != 64) {
1958 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1959 ret = -EPERM;
1960 goto out;
1961 }
1962 #endif
1963 ret = cs89x0_probe1(dev, io, 1);
1964 if (ret)
1965 goto out;
1966
1967 dev_cs89x0 = dev;
1968 return 0;
1969 out:
1970 free_netdev(dev);
1971 return ret;
1972 }
1973
1974 void __exit
1975 cleanup_module(void)
1976 {
1977 unregister_netdev(dev_cs89x0);
1978 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1979 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1980 free_netdev(dev_cs89x0);
1981 }
1982 #endif /* MODULE */
1983
1984 /*
1985 * Local variables:
1986 * version-control: t
1987 * kept-new-versions: 5
1988 * c-indent-level: 8
1989 * tab-width: 8
1990 * End:
1991 *
1992 */
Linux kernel - Deliverables
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