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x86: sparse_irq: fix typo in debug print out
[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[] __used __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[] __used __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[] __used __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[] __used __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 <mach/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[] __used __initdata = {CIRRUS_DEFAULT_BASE, 0};
196 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
197 #elif defined(CONFIG_MACH_MX31ADS)
198 #include <mach/board-mx31ads.h>
199 static unsigned int netcard_portlist[] __used __initdata = {
200 PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
201 };
202 static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
203 #else
204 static unsigned int netcard_portlist[] __used __initdata =
205 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
206 static unsigned int cs8900_irq_map[] = {10,11,12,5};
207 #endif
208
209 #if DEBUGGING
210 static unsigned int net_debug = DEBUGGING;
211 #else
212 #define net_debug 0 /* gcc will remove all the debug code for us */
213 #endif
214
215 /* The number of low I/O ports used by the ethercard. */
216 #define NETCARD_IO_EXTENT 16
217
218 /* we allow the user to override various values normally set in the EEPROM */
219 #define FORCE_RJ45 0x0001 /* pick one of these three */
220 #define FORCE_AUI 0x0002
221 #define FORCE_BNC 0x0004
222
223 #define FORCE_AUTO 0x0010 /* pick one of these three */
224 #define FORCE_HALF 0x0020
225 #define FORCE_FULL 0x0030
226
227 /* Information that need to be kept for each board. */
228 struct net_local {
229 struct net_device_stats stats;
230 int chip_type; /* one of: CS8900, CS8920, CS8920M */
231 char chip_revision; /* revision letter of the chip ('A'...) */
232 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
233 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
234 int adapter_cnf; /* adapter configuration from EEPROM */
235 int isa_config; /* ISA configuration from EEPROM */
236 int irq_map; /* IRQ map from EEPROM */
237 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
238 int curr_rx_cfg; /* a copy of PP_RxCFG */
239 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
240 int send_underrun; /* keep track of how many underruns in a row we get */
241 int force; /* force various values; see FORCE* above. */
242 spinlock_t lock;
243 #if ALLOW_DMA
244 int use_dma; /* Flag: we're using dma */
245 int dma; /* DMA channel */
246 int dmasize; /* 16 or 64 */
247 unsigned char *dma_buff; /* points to the beginning of the buffer */
248 unsigned char *end_dma_buff; /* points to the end of the buffer */
249 unsigned char *rx_dma_ptr; /* points to the next packet */
250 #endif
251 };
252
253 /* Index to functions, as function prototypes. */
254
255 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
256 static int net_open(struct net_device *dev);
257 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
258 static irqreturn_t net_interrupt(int irq, void *dev_id);
259 static void set_multicast_list(struct net_device *dev);
260 static void net_timeout(struct net_device *dev);
261 static void net_rx(struct net_device *dev);
262 static int net_close(struct net_device *dev);
263 static struct net_device_stats *net_get_stats(struct net_device *dev);
264 static void reset_chip(struct net_device *dev);
265 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
266 static int get_eeprom_cksum(int off, int len, int *buffer);
267 static int set_mac_address(struct net_device *dev, void *addr);
268 static void count_rx_errors(int status, struct net_local *lp);
269 #ifdef CONFIG_NET_POLL_CONTROLLER
270 static void net_poll_controller(struct net_device *dev);
271 #endif
272 #if ALLOW_DMA
273 static void get_dma_channel(struct net_device *dev);
274 static void release_dma_buff(struct net_local *lp);
275 #endif
276
277 /* Example routines you must write ;->. */
278 #define tx_done(dev) 1
279
280 /*
281 * Permit 'cs89x0_dma=N' in the kernel boot environment
282 */
283 #if !defined(MODULE) && (ALLOW_DMA != 0)
284 static int g_cs89x0_dma;
285
286 static int __init dma_fn(char *str)
287 {
288 g_cs89x0_dma = simple_strtol(str,NULL,0);
289 return 1;
290 }
291
292 __setup("cs89x0_dma=", dma_fn);
293 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
294
295 #ifndef MODULE
296 static int g_cs89x0_media__force;
297
298 static int __init media_fn(char *str)
299 {
300 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
301 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
302 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
303 return 1;
304 }
305
306 __setup("cs89x0_media=", media_fn);
307
308
309 /* Check for a network adaptor of this type, and return '0' iff one exists.
310 If dev->base_addr == 0, probe all likely locations.
311 If dev->base_addr == 1, always return failure.
312 If dev->base_addr == 2, allocate space for the device and return success
313 (detachable devices only).
314 Return 0 on success.
315 */
316
317 struct net_device * __init cs89x0_probe(int unit)
318 {
319 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
320 unsigned *port;
321 int err = 0;
322 int irq;
323 int io;
324
325 if (!dev)
326 return ERR_PTR(-ENODEV);
327
328 sprintf(dev->name, "eth%d", unit);
329 netdev_boot_setup_check(dev);
330 io = dev->base_addr;
331 irq = dev->irq;
332
333 if (net_debug)
334 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
335
336 if (io > 0x1ff) { /* Check a single specified location. */
337 err = cs89x0_probe1(dev, io, 0);
338 } else if (io != 0) { /* Don't probe at all. */
339 err = -ENXIO;
340 } else {
341 for (port = netcard_portlist; *port; port++) {
342 if (cs89x0_probe1(dev, *port, 0) == 0)
343 break;
344 dev->irq = irq;
345 }
346 if (!*port)
347 err = -ENODEV;
348 }
349 if (err)
350 goto out;
351 return dev;
352 out:
353 free_netdev(dev);
354 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
355 return ERR_PTR(err);
356 }
357 #endif
358
359 #if defined(CONFIG_MACH_IXDP2351)
360 static u16
361 readword(unsigned long base_addr, int portno)
362 {
363 return __raw_readw(base_addr + (portno << 1));
364 }
365
366 static void
367 writeword(unsigned long base_addr, int portno, u16 value)
368 {
369 __raw_writew(value, base_addr + (portno << 1));
370 }
371 #elif defined(CONFIG_ARCH_IXDP2X01)
372 static u16
373 readword(unsigned long base_addr, int portno)
374 {
375 return __raw_readl(base_addr + (portno << 1));
376 }
377
378 static void
379 writeword(unsigned long base_addr, int portno, u16 value)
380 {
381 __raw_writel(value, base_addr + (portno << 1));
382 }
383 #elif defined(CONFIG_ARCH_PNX010X)
384 static u16
385 readword(unsigned long base_addr, int portno)
386 {
387 return inw(base_addr + (portno << 1));
388 }
389
390 static void
391 writeword(unsigned long base_addr, int portno, u16 value)
392 {
393 outw(value, base_addr + (portno << 1));
394 }
395 #else
396 static u16
397 readword(unsigned long base_addr, int portno)
398 {
399 return inw(base_addr + portno);
400 }
401
402 static void
403 writeword(unsigned long base_addr, int portno, u16 value)
404 {
405 outw(value, base_addr + portno);
406 }
407 #endif
408
409 static void
410 readwords(unsigned long base_addr, int portno, void *buf, int length)
411 {
412 u8 *buf8 = (u8 *)buf;
413
414 do {
415 u16 tmp16;
416
417 tmp16 = readword(base_addr, portno);
418 *buf8++ = (u8)tmp16;
419 *buf8++ = (u8)(tmp16 >> 8);
420 } while (--length);
421 }
422
423 static void
424 writewords(unsigned long base_addr, int portno, void *buf, int length)
425 {
426 u8 *buf8 = (u8 *)buf;
427
428 do {
429 u16 tmp16;
430
431 tmp16 = *buf8++;
432 tmp16 |= (*buf8++) << 8;
433 writeword(base_addr, portno, tmp16);
434 } while (--length);
435 }
436
437 static u16
438 readreg(struct net_device *dev, u16 regno)
439 {
440 writeword(dev->base_addr, ADD_PORT, regno);
441 return readword(dev->base_addr, DATA_PORT);
442 }
443
444 static void
445 writereg(struct net_device *dev, u16 regno, u16 value)
446 {
447 writeword(dev->base_addr, ADD_PORT, regno);
448 writeword(dev->base_addr, DATA_PORT, value);
449 }
450
451 static int __init
452 wait_eeprom_ready(struct net_device *dev)
453 {
454 int timeout = jiffies;
455 /* check to see if the EEPROM is ready, a timeout is used -
456 just in case EEPROM is ready when SI_BUSY in the
457 PP_SelfST is clear */
458 while(readreg(dev, PP_SelfST) & SI_BUSY)
459 if (jiffies - timeout >= 40)
460 return -1;
461 return 0;
462 }
463
464 static int __init
465 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
466 {
467 int i;
468
469 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
470 for (i = 0; i < len; i++) {
471 if (wait_eeprom_ready(dev) < 0) return -1;
472 /* Now send the EEPROM read command and EEPROM location to read */
473 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
474 if (wait_eeprom_ready(dev) < 0) return -1;
475 buffer[i] = readreg(dev, PP_EEData);
476 if (net_debug > 3) printk("%04x ", buffer[i]);
477 }
478 if (net_debug > 3) printk("\n");
479 return 0;
480 }
481
482 static int __init
483 get_eeprom_cksum(int off, int len, int *buffer)
484 {
485 int i, cksum;
486
487 cksum = 0;
488 for (i = 0; i < len; i++)
489 cksum += buffer[i];
490 cksum &= 0xffff;
491 if (cksum == 0)
492 return 0;
493 return -1;
494 }
495
496 #ifdef CONFIG_NET_POLL_CONTROLLER
497 /*
498 * Polling receive - used by netconsole and other diagnostic tools
499 * to allow network i/o with interrupts disabled.
500 */
501 static void net_poll_controller(struct net_device *dev)
502 {
503 disable_irq(dev->irq);
504 net_interrupt(dev->irq, dev);
505 enable_irq(dev->irq);
506 }
507 #endif
508
509 /* This is the real probe routine. Linux has a history of friendly device
510 probes on the ISA bus. A good device probes avoids doing writes, and
511 verifies that the correct device exists and functions.
512 Return 0 on success.
513 */
514
515 static int __init
516 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
517 {
518 struct net_local *lp = netdev_priv(dev);
519 static unsigned version_printed;
520 int i;
521 int tmp;
522 unsigned rev_type = 0;
523 int eeprom_buff[CHKSUM_LEN];
524 int retval;
525 DECLARE_MAC_BUF(mac);
526
527 /* Initialize the device structure. */
528 if (!modular) {
529 memset(lp, 0, sizeof(*lp));
530 spin_lock_init(&lp->lock);
531 #ifndef MODULE
532 #if ALLOW_DMA
533 if (g_cs89x0_dma) {
534 lp->use_dma = 1;
535 lp->dma = g_cs89x0_dma;
536 lp->dmasize = 16; /* Could make this an option... */
537 }
538 #endif
539 lp->force = g_cs89x0_media__force;
540 #endif
541 }
542
543 #ifdef CONFIG_ARCH_PNX010X
544 initialize_ebi();
545
546 /* Map GPIO registers for the pins connected to the CS8900a. */
547 if (map_cirrus_gpio() < 0)
548 return -ENODEV;
549
550 reset_cirrus();
551
552 /* Map event-router registers. */
553 if (map_event_router() < 0)
554 return -ENODEV;
555
556 enable_cirrus_irq();
557
558 unmap_cirrus_gpio();
559 unmap_event_router();
560
561 dev->base_addr = ioaddr;
562
563 for (i = 0 ; i < 3 ; i++)
564 readreg(dev, 0);
565 #endif
566
567 /* Grab the region so we can find another board if autoIRQ fails. */
568 /* WTF is going on here? */
569 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
570 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
571 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
572 retval = -EBUSY;
573 goto out1;
574 }
575
576 #ifdef CONFIG_SH_HICOSH4
577 /* truely reset the chip */
578 writeword(ioaddr, ADD_PORT, 0x0114);
579 writeword(ioaddr, DATA_PORT, 0x0040);
580 #endif
581
582 /* if they give us an odd I/O address, then do ONE write to
583 the address port, to get it back to address zero, where we
584 expect to find the EISA signature word. An IO with a base of 0x3
585 will skip the test for the ADD_PORT. */
586 if (ioaddr & 1) {
587 if (net_debug > 1)
588 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
589 if ((ioaddr & 2) != 2)
590 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
591 printk(KERN_ERR "%s: bad signature 0x%x\n",
592 dev->name, readword(ioaddr & ~3, ADD_PORT));
593 retval = -ENODEV;
594 goto out2;
595 }
596 }
597
598 ioaddr &= ~3;
599 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
600 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
601 writeword(ioaddr, ADD_PORT, PP_ChipID);
602
603 tmp = readword(ioaddr, DATA_PORT);
604 if (tmp != CHIP_EISA_ID_SIG) {
605 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
606 CHIP_EISA_ID_SIG_STR "\n",
607 dev->name, ioaddr, DATA_PORT, tmp);
608 retval = -ENODEV;
609 goto out2;
610 }
611
612 /* Fill in the 'dev' fields. */
613 dev->base_addr = ioaddr;
614
615 /* get the chip type */
616 rev_type = readreg(dev, PRODUCT_ID_ADD);
617 lp->chip_type = rev_type &~ REVISON_BITS;
618 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
619
620 /* Check the chip type and revision in order to set the correct send command
621 CS8920 revision C and CS8900 revision F can use the faster send. */
622 lp->send_cmd = TX_AFTER_381;
623 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
624 lp->send_cmd = TX_NOW;
625 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
626 lp->send_cmd = TX_NOW;
627
628 if (net_debug && version_printed++ == 0)
629 printk(version);
630
631 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
632 dev->name,
633 lp->chip_type==CS8900?'0':'2',
634 lp->chip_type==CS8920M?"M":"",
635 lp->chip_revision,
636 dev->base_addr);
637
638 reset_chip(dev);
639
640 /* Here we read the current configuration of the chip. If there
641 is no Extended EEPROM then the idea is to not disturb the chip
642 configuration, it should have been correctly setup by automatic
643 EEPROM read on reset. So, if the chip says it read the EEPROM
644 the driver will always do *something* instead of complain that
645 adapter_cnf is 0. */
646
647 #ifdef CONFIG_SH_HICOSH4
648 if (1) {
649 /* For the HiCO.SH4 board, things are different: we don't
650 have EEPROM, but there is some data in flash, so we go
651 get it there directly (MAC). */
652 __u16 *confd;
653 short cnt;
654 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
655 == 0x006c3000) {
656 confd = (__u16*) 0xa0013fc0;
657 } else {
658 confd = (__u16*) 0xa001ffc0;
659 }
660 cnt = (*confd++ & 0x00ff) >> 1;
661 while (--cnt > 0) {
662 __u16 j = *confd++;
663
664 switch (j & 0x0fff) {
665 case PP_IA:
666 for (i = 0; i < ETH_ALEN/2; i++) {
667 dev->dev_addr[i*2] = confd[i] & 0xFF;
668 dev->dev_addr[i*2+1] = confd[i] >> 8;
669 }
670 break;
671 }
672 j = (j >> 12) + 1;
673 confd += j;
674 cnt -= j;
675 }
676 } else
677 #endif
678
679 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
680 (EEPROM_OK|EEPROM_PRESENT)) {
681 /* Load the MAC. */
682 for (i=0; i < ETH_ALEN/2; i++) {
683 unsigned int Addr;
684 Addr = readreg(dev, PP_IA+i*2);
685 dev->dev_addr[i*2] = Addr & 0xFF;
686 dev->dev_addr[i*2+1] = Addr >> 8;
687 }
688
689 /* Load the Adapter Configuration.
690 Note: Barring any more specific information from some
691 other source (ie EEPROM+Schematics), we would not know
692 how to operate a 10Base2 interface on the AUI port.
693 However, since we do read the status of HCB1 and use
694 settings that always result in calls to control_dc_dc(dev,0)
695 a BNC interface should work if the enable pin
696 (dc/dc converter) is on HCB1. It will be called AUI
697 however. */
698
699 lp->adapter_cnf = 0;
700 i = readreg(dev, PP_LineCTL);
701 /* Preserve the setting of the HCB1 pin. */
702 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
703 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
704 /* Save the sqelch bit */
705 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
706 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
707 /* Check if the card is in 10Base-t only mode */
708 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
709 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
710 /* Check if the card is in AUI only mode */
711 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
712 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
713 /* Check if the card is in Auto mode. */
714 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
715 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
716 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
717
718 if (net_debug > 1)
719 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
720 dev->name, i, lp->adapter_cnf);
721
722 /* IRQ. Other chips already probe, see below. */
723 if (lp->chip_type == CS8900)
724 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
725
726 printk( "[Cirrus EEPROM] ");
727 }
728
729 printk("\n");
730
731 /* First check to see if an EEPROM is attached. */
732 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
733 if (1) {
734 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
735 } else
736 #endif
737 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
738 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
739 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
740 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
741 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
742 /* Check if the chip was able to read its own configuration starting
743 at 0 in the EEPROM*/
744 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
745 (EEPROM_OK|EEPROM_PRESENT))
746 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
747
748 } else {
749 /* This reads an extended EEPROM that is not documented
750 in the CS8900 datasheet. */
751
752 /* get transmission control word but keep the autonegotiation bits */
753 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
754 /* Store adapter configuration */
755 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
756 /* Store ISA configuration */
757 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
758 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
759
760 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
761 /* store the initial memory base address */
762 for (i = 0; i < ETH_ALEN/2; i++) {
763 dev->dev_addr[i*2] = eeprom_buff[i];
764 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
765 }
766 if (net_debug > 1)
767 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
768 dev->name, lp->adapter_cnf);
769 }
770
771 /* allow them to force multiple transceivers. If they force multiple, autosense */
772 {
773 int count = 0;
774 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
775 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
776 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
777 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
778 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
779 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
780 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
781 }
782
783 if (net_debug > 1)
784 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
785 dev->name, lp->force, lp->adapter_cnf);
786
787 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
788
789 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
790
791 /* FIXME: we don't set the Ethernet address on the command line. Use
792 ifconfig IFACE hw ether AABBCCDDEEFF */
793
794 printk(KERN_INFO "cs89x0 media %s%s%s",
795 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
796 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
797 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
798
799 lp->irq_map = 0xffff;
800
801 /* If this is a CS8900 then no pnp soft */
802 if (lp->chip_type != CS8900 &&
803 /* Check if the ISA IRQ has been set */
804 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
805 (i != 0 && i < CS8920_NO_INTS))) {
806 if (!dev->irq)
807 dev->irq = i;
808 } else {
809 i = lp->isa_config & INT_NO_MASK;
810 if (lp->chip_type == CS8900) {
811 #ifdef CONFIG_CS89x0_NONISA_IRQ
812 i = cs8900_irq_map[0];
813 #else
814 /* Translate the IRQ using the IRQ mapping table. */
815 if (i >= ARRAY_SIZE(cs8900_irq_map))
816 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
817 else
818 i = cs8900_irq_map[i];
819
820 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
821 } else {
822 int irq_map_buff[IRQ_MAP_LEN/2];
823
824 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
825 IRQ_MAP_LEN/2,
826 irq_map_buff) >= 0) {
827 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
828 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
829 }
830 #endif
831 }
832 if (!dev->irq)
833 dev->irq = i;
834 }
835
836 printk(" IRQ %d", dev->irq);
837
838 #if ALLOW_DMA
839 if (lp->use_dma) {
840 get_dma_channel(dev);
841 printk(", DMA %d", dev->dma);
842 }
843 else
844 #endif
845 {
846 printk(", programmed I/O");
847 }
848
849 /* print the ethernet address. */
850 printk(", MAC %s", print_mac(mac, dev->dev_addr));
851
852 dev->open = net_open;
853 dev->stop = net_close;
854 dev->tx_timeout = net_timeout;
855 dev->watchdog_timeo = HZ;
856 dev->hard_start_xmit = net_send_packet;
857 dev->get_stats = net_get_stats;
858 dev->set_multicast_list = set_multicast_list;
859 dev->set_mac_address = set_mac_address;
860 #ifdef CONFIG_NET_POLL_CONTROLLER
861 dev->poll_controller = net_poll_controller;
862 #endif
863
864 printk("\n");
865 if (net_debug)
866 printk("cs89x0_probe1() successful\n");
867
868 retval = register_netdev(dev);
869 if (retval)
870 goto out3;
871 return 0;
872 out3:
873 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
874 out2:
875 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
876 out1:
877 return retval;
878 }
879
880
881 /*********************************
882 * This page contains DMA routines
883 **********************************/
884
885 #if ALLOW_DMA
886
887 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
888
889 static void
890 get_dma_channel(struct net_device *dev)
891 {
892 struct net_local *lp = netdev_priv(dev);
893
894 if (lp->dma) {
895 dev->dma = lp->dma;
896 lp->isa_config |= ISA_RxDMA;
897 } else {
898 if ((lp->isa_config & ANY_ISA_DMA) == 0)
899 return;
900 dev->dma = lp->isa_config & DMA_NO_MASK;
901 if (lp->chip_type == CS8900)
902 dev->dma += 5;
903 if (dev->dma < 5 || dev->dma > 7) {
904 lp->isa_config &= ~ANY_ISA_DMA;
905 return;
906 }
907 }
908 return;
909 }
910
911 static void
912 write_dma(struct net_device *dev, int chip_type, int dma)
913 {
914 struct net_local *lp = netdev_priv(dev);
915 if ((lp->isa_config & ANY_ISA_DMA) == 0)
916 return;
917 if (chip_type == CS8900) {
918 writereg(dev, PP_CS8900_ISADMA, dma-5);
919 } else {
920 writereg(dev, PP_CS8920_ISADMA, dma);
921 }
922 }
923
924 static void
925 set_dma_cfg(struct net_device *dev)
926 {
927 struct net_local *lp = netdev_priv(dev);
928
929 if (lp->use_dma) {
930 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
931 if (net_debug > 3)
932 printk("set_dma_cfg(): no DMA\n");
933 return;
934 }
935 if (lp->isa_config & ISA_RxDMA) {
936 lp->curr_rx_cfg |= RX_DMA_ONLY;
937 if (net_debug > 3)
938 printk("set_dma_cfg(): RX_DMA_ONLY\n");
939 } else {
940 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
941 if (net_debug > 3)
942 printk("set_dma_cfg(): AUTO_RX_DMA\n");
943 }
944 }
945 }
946
947 static int
948 dma_bufcfg(struct net_device *dev)
949 {
950 struct net_local *lp = netdev_priv(dev);
951 if (lp->use_dma)
952 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
953 else
954 return 0;
955 }
956
957 static int
958 dma_busctl(struct net_device *dev)
959 {
960 int retval = 0;
961 struct net_local *lp = netdev_priv(dev);
962 if (lp->use_dma) {
963 if (lp->isa_config & ANY_ISA_DMA)
964 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
965 if (lp->isa_config & DMA_BURST)
966 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
967 if (lp->dmasize == 64)
968 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
969 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
970 }
971 return retval;
972 }
973
974 static void
975 dma_rx(struct net_device *dev)
976 {
977 struct net_local *lp = netdev_priv(dev);
978 struct sk_buff *skb;
979 int status, length;
980 unsigned char *bp = lp->rx_dma_ptr;
981
982 status = bp[0] + (bp[1]<<8);
983 length = bp[2] + (bp[3]<<8);
984 bp += 4;
985 if (net_debug > 5) {
986 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
987 dev->name, (unsigned long)bp, status, length);
988 }
989 if ((status & RX_OK) == 0) {
990 count_rx_errors(status, lp);
991 goto skip_this_frame;
992 }
993
994 /* Malloc up new buffer. */
995 skb = dev_alloc_skb(length + 2);
996 if (skb == NULL) {
997 if (net_debug) /* I don't think we want to do this to a stressed system */
998 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
999 lp->stats.rx_dropped++;
1000
1001 /* AKPM: advance bp to the next frame */
1002 skip_this_frame:
1003 bp += (length + 3) & ~3;
1004 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1005 lp->rx_dma_ptr = bp;
1006 return;
1007 }
1008 skb_reserve(skb, 2); /* longword align L3 header */
1009
1010 if (bp + length > lp->end_dma_buff) {
1011 int semi_cnt = lp->end_dma_buff - bp;
1012 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
1013 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
1014 length - semi_cnt);
1015 } else {
1016 memcpy(skb_put(skb,length), bp, length);
1017 }
1018 bp += (length + 3) & ~3;
1019 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1020 lp->rx_dma_ptr = bp;
1021
1022 if (net_debug > 3) {
1023 printk( "%s: received %d byte DMA packet of type %x\n",
1024 dev->name, length,
1025 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1026 }
1027 skb->protocol=eth_type_trans(skb,dev);
1028 netif_rx(skb);
1029 dev->last_rx = jiffies;
1030 lp->stats.rx_packets++;
1031 lp->stats.rx_bytes += length;
1032 }
1033
1034 #endif /* ALLOW_DMA */
1035
1036 void __init reset_chip(struct net_device *dev)
1037 {
1038 #if !defined(CONFIG_MACH_MX31ADS)
1039 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1040 struct net_local *lp = netdev_priv(dev);
1041 int ioaddr = dev->base_addr;
1042 #endif
1043 int reset_start_time;
1044
1045 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1046
1047 /* wait 30 ms */
1048 msleep(30);
1049
1050 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1051 if (lp->chip_type != CS8900) {
1052 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1053 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1054 outb(dev->irq, ioaddr + DATA_PORT);
1055 outb(0, ioaddr + DATA_PORT + 1);
1056
1057 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1058 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1059 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1060 }
1061 #endif /* IXDP2x01 */
1062
1063 /* Wait until the chip is reset */
1064 reset_start_time = jiffies;
1065 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1066 ;
1067 #endif /* !CONFIG_MACH_MX31ADS */
1068 }
1069
1070
1071 static void
1072 control_dc_dc(struct net_device *dev, int on_not_off)
1073 {
1074 struct net_local *lp = netdev_priv(dev);
1075 unsigned int selfcontrol;
1076 int timenow = jiffies;
1077 /* control the DC to DC convertor in the SelfControl register.
1078 Note: This is hooked up to a general purpose pin, might not
1079 always be a DC to DC convertor. */
1080
1081 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1082 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1083 selfcontrol |= HCB1;
1084 else
1085 selfcontrol &= ~HCB1;
1086 writereg(dev, PP_SelfCTL, selfcontrol);
1087
1088 /* Wait for the DC/DC converter to power up - 500ms */
1089 while (jiffies - timenow < HZ)
1090 ;
1091 }
1092
1093 #define DETECTED_NONE 0
1094 #define DETECTED_RJ45H 1
1095 #define DETECTED_RJ45F 2
1096 #define DETECTED_AUI 3
1097 #define DETECTED_BNC 4
1098
1099 static int
1100 detect_tp(struct net_device *dev)
1101 {
1102 struct net_local *lp = netdev_priv(dev);
1103 int timenow = jiffies;
1104 int fdx;
1105
1106 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1107
1108 /* If connected to another full duplex capable 10-Base-T card the link pulses
1109 seem to be lost when the auto detect bit in the LineCTL is set.
1110 To overcome this the auto detect bit will be cleared whilst testing the
1111 10-Base-T interface. This would not be necessary for the sparrow chip but
1112 is simpler to do it anyway. */
1113 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1114 control_dc_dc(dev, 0);
1115
1116 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1117 for (timenow = jiffies; jiffies - timenow < 15; )
1118 ;
1119 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1120 return DETECTED_NONE;
1121
1122 if (lp->chip_type == CS8900) {
1123 switch (lp->force & 0xf0) {
1124 #if 0
1125 case FORCE_AUTO:
1126 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1127 return DETECTED_NONE;
1128 #endif
1129 /* CS8900 doesn't support AUTO, change to HALF*/
1130 case FORCE_AUTO:
1131 lp->force &= ~FORCE_AUTO;
1132 lp->force |= FORCE_HALF;
1133 break;
1134 case FORCE_HALF:
1135 break;
1136 case FORCE_FULL:
1137 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1138 break;
1139 }
1140 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1141 } else {
1142 switch (lp->force & 0xf0) {
1143 case FORCE_AUTO:
1144 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1145 break;
1146 case FORCE_HALF:
1147 lp->auto_neg_cnf = 0;
1148 break;
1149 case FORCE_FULL:
1150 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1151 break;
1152 }
1153
1154 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1155
1156 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1157 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1158 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1159 if (jiffies - timenow > 4000) {
1160 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1161 break;
1162 }
1163 }
1164 }
1165 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1166 }
1167 if (fdx)
1168 return DETECTED_RJ45F;
1169 else
1170 return DETECTED_RJ45H;
1171 }
1172
1173 /* send a test packet - return true if carrier bits are ok */
1174 static int
1175 send_test_pkt(struct net_device *dev)
1176 {
1177 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1178 0, 46, /* A 46 in network order */
1179 0, 0, /* DSAP=0 & SSAP=0 fields */
1180 0xf3, 0 /* Control (Test Req + P bit set) */ };
1181 long timenow = jiffies;
1182
1183 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1184
1185 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1186 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1187
1188 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1189 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1190
1191 /* Test to see if the chip has allocated memory for the packet */
1192 while (jiffies - timenow < 5)
1193 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1194 break;
1195 if (jiffies - timenow >= 5)
1196 return 0; /* this shouldn't happen */
1197
1198 /* Write the contents of the packet */
1199 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1200
1201 if (net_debug > 1) printk("Sending test packet ");
1202 /* wait a couple of jiffies for packet to be received */
1203 for (timenow = jiffies; jiffies - timenow < 3; )
1204 ;
1205 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1206 if (net_debug > 1) printk("succeeded\n");
1207 return 1;
1208 }
1209 if (net_debug > 1) printk("failed\n");
1210 return 0;
1211 }
1212
1213
1214 static int
1215 detect_aui(struct net_device *dev)
1216 {
1217 struct net_local *lp = netdev_priv(dev);
1218
1219 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1220 control_dc_dc(dev, 0);
1221
1222 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1223
1224 if (send_test_pkt(dev))
1225 return DETECTED_AUI;
1226 else
1227 return DETECTED_NONE;
1228 }
1229
1230 static int
1231 detect_bnc(struct net_device *dev)
1232 {
1233 struct net_local *lp = netdev_priv(dev);
1234
1235 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1236 control_dc_dc(dev, 1);
1237
1238 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1239
1240 if (send_test_pkt(dev))
1241 return DETECTED_BNC;
1242 else
1243 return DETECTED_NONE;
1244 }
1245
1246
1247 static void
1248 write_irq(struct net_device *dev, int chip_type, int irq)
1249 {
1250 int i;
1251
1252 if (chip_type == CS8900) {
1253 /* Search the mapping table for the corresponding IRQ pin. */
1254 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
1255 if (cs8900_irq_map[i] == irq)
1256 break;
1257 /* Not found */
1258 if (i == ARRAY_SIZE(cs8900_irq_map))
1259 i = 3;
1260 writereg(dev, PP_CS8900_ISAINT, i);
1261 } else {
1262 writereg(dev, PP_CS8920_ISAINT, irq);
1263 }
1264 }
1265
1266 /* Open/initialize the board. This is called (in the current kernel)
1267 sometime after booting when the 'ifconfig' program is run.
1268
1269 This routine should set everything up anew at each open, even
1270 registers that "should" only need to be set once at boot, so that
1271 there is non-reboot way to recover if something goes wrong.
1272 */
1273
1274 /* AKPM: do we need to do any locking here? */
1275
1276 static int
1277 net_open(struct net_device *dev)
1278 {
1279 struct net_local *lp = netdev_priv(dev);
1280 int result = 0;
1281 int i;
1282 int ret;
1283
1284 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1285 if (dev->irq < 2) {
1286 /* Allow interrupts to be generated by the chip */
1287 /* Cirrus' release had this: */
1288 #if 0
1289 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1290 #endif
1291 /* And 2.3.47 had this: */
1292 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1293
1294 for (i = 2; i < CS8920_NO_INTS; i++) {
1295 if ((1 << i) & lp->irq_map) {
1296 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1297 dev->irq = i;
1298 write_irq(dev, lp->chip_type, i);
1299 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1300 break;
1301 }
1302 }
1303 }
1304
1305 if (i >= CS8920_NO_INTS) {
1306 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1307 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1308 ret = -EAGAIN;
1309 goto bad_out;
1310 }
1311 }
1312 else
1313 #endif
1314 {
1315 #ifndef CONFIG_CS89x0_NONISA_IRQ
1316 if (((1 << dev->irq) & lp->irq_map) == 0) {
1317 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1318 dev->name, dev->irq, lp->irq_map);
1319 ret = -EAGAIN;
1320 goto bad_out;
1321 }
1322 #endif
1323 /* FIXME: Cirrus' release had this: */
1324 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1325 /* And 2.3.47 had this: */
1326 #if 0
1327 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1328 #endif
1329 write_irq(dev, lp->chip_type, dev->irq);
1330 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1331 if (ret) {
1332 if (net_debug)
1333 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1334 goto bad_out;
1335 }
1336 }
1337
1338 #if ALLOW_DMA
1339 if (lp->use_dma) {
1340 if (lp->isa_config & ANY_ISA_DMA) {
1341 unsigned long flags;
1342 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1343 get_order(lp->dmasize * 1024));
1344
1345 if (!lp->dma_buff) {
1346 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1347 goto release_irq;
1348 }
1349 if (net_debug > 1) {
1350 printk( "%s: dma %lx %lx\n",
1351 dev->name,
1352 (unsigned long)lp->dma_buff,
1353 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1354 }
1355 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1356 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1357 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1358 goto release_irq;
1359 }
1360 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1361 if (request_dma(dev->dma, dev->name)) {
1362 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1363 goto release_irq;
1364 }
1365 write_dma(dev, lp->chip_type, dev->dma);
1366 lp->rx_dma_ptr = lp->dma_buff;
1367 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1368 spin_lock_irqsave(&lp->lock, flags);
1369 disable_dma(dev->dma);
1370 clear_dma_ff(dev->dma);
1371 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1372 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1373 set_dma_count(dev->dma, lp->dmasize*1024);
1374 enable_dma(dev->dma);
1375 spin_unlock_irqrestore(&lp->lock, flags);
1376 }
1377 }
1378 #endif /* ALLOW_DMA */
1379
1380 /* set the Ethernet address */
1381 for (i=0; i < ETH_ALEN/2; i++)
1382 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1383
1384 /* while we're testing the interface, leave interrupts disabled */
1385 writereg(dev, PP_BusCTL, MEMORY_ON);
1386
1387 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1388 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1389 lp->linectl = LOW_RX_SQUELCH;
1390 else
1391 lp->linectl = 0;
1392
1393 /* check to make sure that they have the "right" hardware available */
1394 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1395 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1396 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1397 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1398 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1399 }
1400 #ifdef CONFIG_ARCH_PNX010X
1401 result = A_CNF_10B_T;
1402 #endif
1403 if (!result) {
1404 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1405 release_dma:
1406 #if ALLOW_DMA
1407 free_dma(dev->dma);
1408 release_irq:
1409 release_dma_buff(lp);
1410 #endif
1411 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1412 free_irq(dev->irq, dev);
1413 ret = -EAGAIN;
1414 goto bad_out;
1415 }
1416
1417 /* set the hardware to the configured choice */
1418 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1419 case A_CNF_MEDIA_10B_T:
1420 result = detect_tp(dev);
1421 if (result==DETECTED_NONE) {
1422 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1423 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1424 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1425 }
1426 break;
1427 case A_CNF_MEDIA_AUI:
1428 result = detect_aui(dev);
1429 if (result==DETECTED_NONE) {
1430 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1431 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1432 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1433 }
1434 break;
1435 case A_CNF_MEDIA_10B_2:
1436 result = detect_bnc(dev);
1437 if (result==DETECTED_NONE) {
1438 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1439 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1440 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1441 }
1442 break;
1443 case A_CNF_MEDIA_AUTO:
1444 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1445 if (lp->adapter_cnf & A_CNF_10B_T)
1446 if ((result = detect_tp(dev)) != DETECTED_NONE)
1447 break;
1448 if (lp->adapter_cnf & A_CNF_AUI)
1449 if ((result = detect_aui(dev)) != DETECTED_NONE)
1450 break;
1451 if (lp->adapter_cnf & A_CNF_10B_2)
1452 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1453 break;
1454 printk(KERN_ERR "%s: no media detected\n", dev->name);
1455 goto release_dma;
1456 }
1457 switch(result) {
1458 case DETECTED_NONE:
1459 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1460 goto release_dma;
1461 case DETECTED_RJ45H:
1462 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1463 break;
1464 case DETECTED_RJ45F:
1465 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1466 break;
1467 case DETECTED_AUI:
1468 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1469 break;
1470 case DETECTED_BNC:
1471 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1472 break;
1473 }
1474
1475 /* Turn on both receive and transmit operations */
1476 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1477
1478 /* Receive only error free packets addressed to this card */
1479 lp->rx_mode = 0;
1480 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1481
1482 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1483
1484 if (lp->isa_config & STREAM_TRANSFER)
1485 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1486 #if ALLOW_DMA
1487 set_dma_cfg(dev);
1488 #endif
1489 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1490
1491 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1492 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1493
1494 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1495 #if ALLOW_DMA
1496 dma_bufcfg(dev) |
1497 #endif
1498 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1499
1500 /* now that we've got our act together, enable everything */
1501 writereg(dev, PP_BusCTL, ENABLE_IRQ
1502 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1503 #if ALLOW_DMA
1504 | dma_busctl(dev)
1505 #endif
1506 );
1507 netif_start_queue(dev);
1508 if (net_debug > 1)
1509 printk("cs89x0: net_open() succeeded\n");
1510 return 0;
1511 bad_out:
1512 return ret;
1513 }
1514
1515 static void net_timeout(struct net_device *dev)
1516 {
1517 /* If we get here, some higher level has decided we are broken.
1518 There should really be a "kick me" function call instead. */
1519 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1520 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1521 /* Try to restart the adaptor. */
1522 netif_wake_queue(dev);
1523 }
1524
1525 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1526 {
1527 struct net_local *lp = netdev_priv(dev);
1528
1529 if (net_debug > 3) {
1530 printk("%s: sent %d byte packet of type %x\n",
1531 dev->name, skb->len,
1532 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1533 }
1534
1535 /* keep the upload from being interrupted, since we
1536 ask the chip to start transmitting before the
1537 whole packet has been completely uploaded. */
1538
1539 spin_lock_irq(&lp->lock);
1540 netif_stop_queue(dev);
1541
1542 /* initiate a transmit sequence */
1543 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1544 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1545
1546 /* Test to see if the chip has allocated memory for the packet */
1547 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1548 /*
1549 * Gasp! It hasn't. But that shouldn't happen since
1550 * we're waiting for TxOk, so return 1 and requeue this packet.
1551 */
1552
1553 spin_unlock_irq(&lp->lock);
1554 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1555 return 1;
1556 }
1557 /* Write the contents of the packet */
1558 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1559 spin_unlock_irq(&lp->lock);
1560 lp->stats.tx_bytes += skb->len;
1561 dev->trans_start = jiffies;
1562 dev_kfree_skb (skb);
1563
1564 /*
1565 * We DO NOT call netif_wake_queue() here.
1566 * We also DO NOT call netif_start_queue().
1567 *
1568 * Either of these would cause another bottom half run through
1569 * net_send_packet() before this packet has fully gone out. That causes
1570 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1571 * a dog. We just return and wait for the Tx completion interrupt handler
1572 * to restart the netdevice layer
1573 */
1574
1575 return 0;
1576 }
1577
1578 /* The typical workload of the driver:
1579 Handle the network interface interrupts. */
1580
1581 static irqreturn_t net_interrupt(int irq, void *dev_id)
1582 {
1583 struct net_device *dev = dev_id;
1584 struct net_local *lp;
1585 int ioaddr, status;
1586 int handled = 0;
1587
1588 ioaddr = dev->base_addr;
1589 lp = netdev_priv(dev);
1590
1591 /* we MUST read all the events out of the ISQ, otherwise we'll never
1592 get interrupted again. As a consequence, we can't have any limit
1593 on the number of times we loop in the interrupt handler. The
1594 hardware guarantees that eventually we'll run out of events. Of
1595 course, if you're on a slow machine, and packets are arriving
1596 faster than you can read them off, you're screwed. Hasta la
1597 vista, baby! */
1598 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1599 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1600 handled = 1;
1601 switch(status & ISQ_EVENT_MASK) {
1602 case ISQ_RECEIVER_EVENT:
1603 /* Got a packet(s). */
1604 net_rx(dev);
1605 break;
1606 case ISQ_TRANSMITTER_EVENT:
1607 lp->stats.tx_packets++;
1608 netif_wake_queue(dev); /* Inform upper layers. */
1609 if ((status & ( TX_OK |
1610 TX_LOST_CRS |
1611 TX_SQE_ERROR |
1612 TX_LATE_COL |
1613 TX_16_COL)) != TX_OK) {
1614 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1615 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1616 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1617 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1618 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1619 }
1620 break;
1621 case ISQ_BUFFER_EVENT:
1622 if (status & READY_FOR_TX) {
1623 /* we tried to transmit a packet earlier,
1624 but inexplicably ran out of buffers.
1625 That shouldn't happen since we only ever
1626 load one packet. Shrug. Do the right
1627 thing anyway. */
1628 netif_wake_queue(dev); /* Inform upper layers. */
1629 }
1630 if (status & TX_UNDERRUN) {
1631 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1632 lp->send_underrun++;
1633 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1634 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1635 /* transmit cycle is done, although
1636 frame wasn't transmitted - this
1637 avoids having to wait for the upper
1638 layers to timeout on us, in the
1639 event of a tx underrun */
1640 netif_wake_queue(dev); /* Inform upper layers. */
1641 }
1642 #if ALLOW_DMA
1643 if (lp->use_dma && (status & RX_DMA)) {
1644 int count = readreg(dev, PP_DmaFrameCnt);
1645 while(count) {
1646 if (net_debug > 5)
1647 printk("%s: receiving %d DMA frames\n", dev->name, count);
1648 if (net_debug > 2 && count >1)
1649 printk("%s: receiving %d DMA frames\n", dev->name, count);
1650 dma_rx(dev);
1651 if (--count == 0)
1652 count = readreg(dev, PP_DmaFrameCnt);
1653 if (net_debug > 2 && count > 0)
1654 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1655 }
1656 }
1657 #endif
1658 break;
1659 case ISQ_RX_MISS_EVENT:
1660 lp->stats.rx_missed_errors += (status >>6);
1661 break;
1662 case ISQ_TX_COL_EVENT:
1663 lp->stats.collisions += (status >>6);
1664 break;
1665 }
1666 }
1667 return IRQ_RETVAL(handled);
1668 }
1669
1670 static void
1671 count_rx_errors(int status, struct net_local *lp)
1672 {
1673 lp->stats.rx_errors++;
1674 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1675 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1676 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1677 /* per str 172 */
1678 lp->stats.rx_crc_errors++;
1679 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1680 return;
1681 }
1682
1683 /* We have a good packet(s), get it/them out of the buffers. */
1684 static void
1685 net_rx(struct net_device *dev)
1686 {
1687 struct net_local *lp = netdev_priv(dev);
1688 struct sk_buff *skb;
1689 int status, length;
1690
1691 int ioaddr = dev->base_addr;
1692 status = readword(ioaddr, RX_FRAME_PORT);
1693 length = readword(ioaddr, RX_FRAME_PORT);
1694
1695 if ((status & RX_OK) == 0) {
1696 count_rx_errors(status, lp);
1697 return;
1698 }
1699
1700 /* Malloc up new buffer. */
1701 skb = dev_alloc_skb(length + 2);
1702 if (skb == NULL) {
1703 #if 0 /* Again, this seems a cruel thing to do */
1704 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1705 #endif
1706 lp->stats.rx_dropped++;
1707 return;
1708 }
1709 skb_reserve(skb, 2); /* longword align L3 header */
1710
1711 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1712 if (length & 1)
1713 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1714
1715 if (net_debug > 3) {
1716 printk( "%s: received %d byte packet of type %x\n",
1717 dev->name, length,
1718 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1719 }
1720
1721 skb->protocol=eth_type_trans(skb,dev);
1722 netif_rx(skb);
1723 dev->last_rx = jiffies;
1724 lp->stats.rx_packets++;
1725 lp->stats.rx_bytes += length;
1726 }
1727
1728 #if ALLOW_DMA
1729 static void release_dma_buff(struct net_local *lp)
1730 {
1731 if (lp->dma_buff) {
1732 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1733 lp->dma_buff = NULL;
1734 }
1735 }
1736 #endif
1737
1738 /* The inverse routine to net_open(). */
1739 static int
1740 net_close(struct net_device *dev)
1741 {
1742 #if ALLOW_DMA
1743 struct net_local *lp = netdev_priv(dev);
1744 #endif
1745
1746 netif_stop_queue(dev);
1747
1748 writereg(dev, PP_RxCFG, 0);
1749 writereg(dev, PP_TxCFG, 0);
1750 writereg(dev, PP_BufCFG, 0);
1751 writereg(dev, PP_BusCTL, 0);
1752
1753 free_irq(dev->irq, dev);
1754
1755 #if ALLOW_DMA
1756 if (lp->use_dma && lp->dma) {
1757 free_dma(dev->dma);
1758 release_dma_buff(lp);
1759 }
1760 #endif
1761
1762 /* Update the statistics here. */
1763 return 0;
1764 }
1765
1766 /* Get the current statistics. This may be called with the card open or
1767 closed. */
1768 static struct net_device_stats *
1769 net_get_stats(struct net_device *dev)
1770 {
1771 struct net_local *lp = netdev_priv(dev);
1772 unsigned long flags;
1773
1774 spin_lock_irqsave(&lp->lock, flags);
1775 /* Update the statistics from the device registers. */
1776 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1777 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1778 spin_unlock_irqrestore(&lp->lock, flags);
1779
1780 return &lp->stats;
1781 }
1782
1783 static void set_multicast_list(struct net_device *dev)
1784 {
1785 struct net_local *lp = netdev_priv(dev);
1786 unsigned long flags;
1787
1788 spin_lock_irqsave(&lp->lock, flags);
1789 if(dev->flags&IFF_PROMISC)
1790 {
1791 lp->rx_mode = RX_ALL_ACCEPT;
1792 }
1793 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1794 {
1795 /* The multicast-accept list is initialized to accept-all, and we
1796 rely on higher-level filtering for now. */
1797 lp->rx_mode = RX_MULTCAST_ACCEPT;
1798 }
1799 else
1800 lp->rx_mode = 0;
1801
1802 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1803
1804 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1805 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1806 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1807 spin_unlock_irqrestore(&lp->lock, flags);
1808 }
1809
1810
1811 static int set_mac_address(struct net_device *dev, void *p)
1812 {
1813 int i;
1814 struct sockaddr *addr = p;
1815
1816 if (netif_running(dev))
1817 return -EBUSY;
1818
1819 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1820
1821 if (net_debug) {
1822 DECLARE_MAC_BUF(mac);
1823 printk("%s: Setting MAC address to %s.\n",
1824 dev->name, print_mac(mac, dev->dev_addr));
1825 }
1826 /* set the Ethernet address */
1827 for (i=0; i < ETH_ALEN/2; i++)
1828 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1829
1830 return 0;
1831 }
1832
1833 #ifdef MODULE
1834
1835 static struct net_device *dev_cs89x0;
1836
1837 /*
1838 * Support the 'debug' module parm even if we're compiled for non-debug to
1839 * avoid breaking someone's startup scripts
1840 */
1841
1842 static int io;
1843 static int irq;
1844 static int debug;
1845 static char media[8];
1846 static int duplex=-1;
1847
1848 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1849 static int dma;
1850 static int dmasize=16; /* or 64 */
1851
1852 module_param(io, int, 0);
1853 module_param(irq, int, 0);
1854 module_param(debug, int, 0);
1855 module_param_string(media, media, sizeof(media), 0);
1856 module_param(duplex, int, 0);
1857 module_param(dma , int, 0);
1858 module_param(dmasize , int, 0);
1859 module_param(use_dma , int, 0);
1860 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1861 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1862 #if DEBUGGING
1863 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1864 #else
1865 MODULE_PARM_DESC(debug, "(ignored)");
1866 #endif
1867 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1868 /* No other value than -1 for duplex seems to be currently interpreted */
1869 MODULE_PARM_DESC(duplex, "(ignored)");
1870 #if ALLOW_DMA
1871 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1872 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1873 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1874 #else
1875 MODULE_PARM_DESC(dma , "(ignored)");
1876 MODULE_PARM_DESC(dmasize , "(ignored)");
1877 MODULE_PARM_DESC(use_dma , "(ignored)");
1878 #endif
1879
1880 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
1881 MODULE_LICENSE("GPL");
1882
1883
1884 /*
1885 * media=t - specify media type
1886 or media=2
1887 or media=aui
1888 or medai=auto
1889 * duplex=0 - specify forced half/full/autonegotiate duplex
1890 * debug=# - debug level
1891
1892
1893 * Default Chip Configuration:
1894 * DMA Burst = enabled
1895 * IOCHRDY Enabled = enabled
1896 * UseSA = enabled
1897 * CS8900 defaults to half-duplex if not specified on command-line
1898 * CS8920 defaults to autoneg if not specified on command-line
1899 * Use reset defaults for other config parameters
1900
1901 * Assumptions:
1902 * media type specified is supported (circuitry is present)
1903 * if memory address is > 1MB, then required mem decode hw is present
1904 * if 10B-2, then agent other than driver will enable DC/DC converter
1905 (hw or software util)
1906
1907
1908 */
1909
1910 int __init init_module(void)
1911 {
1912 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1913 struct net_local *lp;
1914 int ret = 0;
1915
1916 #if DEBUGGING
1917 net_debug = debug;
1918 #else
1919 debug = 0;
1920 #endif
1921 if (!dev)
1922 return -ENOMEM;
1923
1924 dev->irq = irq;
1925 dev->base_addr = io;
1926 lp = netdev_priv(dev);
1927
1928 #if ALLOW_DMA
1929 if (use_dma) {
1930 lp->use_dma = use_dma;
1931 lp->dma = dma;
1932 lp->dmasize = dmasize;
1933 }
1934 #endif
1935
1936 spin_lock_init(&lp->lock);
1937
1938 /* boy, they'd better get these right */
1939 if (!strcmp(media, "rj45"))
1940 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1941 else if (!strcmp(media, "aui"))
1942 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1943 else if (!strcmp(media, "bnc"))
1944 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1945 else
1946 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1947
1948 if (duplex==-1)
1949 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1950
1951 if (io == 0) {
1952 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1953 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1954 ret = -EPERM;
1955 goto out;
1956 } else if (io <= 0x1ff) {
1957 ret = -ENXIO;
1958 goto out;
1959 }
1960
1961 #if ALLOW_DMA
1962 if (use_dma && dmasize != 16 && dmasize != 64) {
1963 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1964 ret = -EPERM;
1965 goto out;
1966 }
1967 #endif
1968 ret = cs89x0_probe1(dev, io, 1);
1969 if (ret)
1970 goto out;
1971
1972 dev_cs89x0 = dev;
1973 return 0;
1974 out:
1975 free_netdev(dev);
1976 return ret;
1977 }
1978
1979 void __exit
1980 cleanup_module(void)
1981 {
1982 unregister_netdev(dev_cs89x0);
1983 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1984 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1985 free_netdev(dev_cs89x0);
1986 }
1987 #endif /* MODULE */
1988
1989 /*
1990 * Local variables:
1991 * version-control: t
1992 * kept-new-versions: 5
1993 * c-indent-level: 8
1994 * tab-width: 8
1995 * End:
1996 *
1997 */
Linux kernel - Deliverables
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