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smsc9420: SMSC LAN9420 10/100 PCI ethernet adapter
[GitHub/mt8127/android_kernel_alcatel_ttab.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 : Kernel 2.3.48
40 : Handle kmalloc() failures
41 : Other resource allocation fixes
42 : Add SMP locks
43 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
44 : If ALLOW_DMA is true, make DMA runtime selectable
45 : Folded in changes from Cirrus (Melody Lee
46 : <klee@crystal.cirrus.com>)
47 : Don't call netif_wake_queue() in net_send_packet()
48 : Fixed an out-of-mem bug in dma_rx()
49 : Updated Documentation/networking/cs89x0.txt
50
51 Andrew Morton : Kernel 2.3.99-pre1
52 : Use skb_reserve to longword align IP header (two places)
53 : Remove a delay loop from dma_rx()
54 : Replace '100' with HZ
55 : Clean up a couple of skb API abuses
56 : Added 'cs89x0_dma=N' kernel boot option
57 : Correctly initialise lp->lock in non-module compile
58
59 Andrew Morton : Kernel 2.3.99-pre4-1
60 : MOD_INC/DEC race fix (see
61 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
62
63 Andrew Morton : Kernel 2.4.0-test7-pre2
64 : Enhanced EEPROM support to cover more devices,
65 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
66 : (Jason Gunthorpe <jgg@ualberta.ca>)
67
68 Andrew Morton : Kernel 2.4.0-test11-pre4
69 : Use dev->name in request_*() (Andrey Panin)
70 : Fix an error-path memleak in init_module()
71 : Preserve return value from request_irq()
72 : Fix type of `media' module parm (Keith Owens)
73 : Use SET_MODULE_OWNER()
74 : Tidied up strange request_irq() abuse in net_open().
75
76 Andrew Morton : Kernel 2.4.3-pre1
77 : Request correct number of pages for DMA (Hugh Dickens)
78 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
79 : because unregister_netdev() calls get_stats.
80 : Make `version[]' __initdata
81 : Uninlined the read/write reg/word functions.
82
83 Oskar Schirmer : oskar@scara.com
84 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
85
86 Deepak Saxena : dsaxena@plexity.net
87 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
88
89 Dmitry Pervushin : dpervushin@ru.mvista.com
90 : PNX010X platform support
91
92 Deepak Saxena : dsaxena@plexity.net
93 : Intel IXDP2351 platform support
94
95 Dmitry Pervushin : dpervushin@ru.mvista.com
96 : PNX010X platform support
97
98 */
99
100 /* Always include 'config.h' first in case the user wants to turn on
101 or override something. */
102 #include <linux/module.h>
103
104 /*
105 * Set this to zero to disable DMA code
106 *
107 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
108 * module options so we don't break any startup scripts.
109 */
110 #ifndef CONFIG_ISA_DMA_API
111 #define ALLOW_DMA 0
112 #else
113 #define ALLOW_DMA 1
114 #endif
115
116 /*
117 * Set this to zero to remove all the debug statements via
118 * dead code elimination
119 */
120 #define DEBUGGING 1
121
122 /*
123 Sources:
124
125 Crynwr packet driver epktisa.
126
127 Crystal Semiconductor data sheets.
128
129 */
130
131 #include <linux/errno.h>
132 #include <linux/netdevice.h>
133 #include <linux/etherdevice.h>
134 #include <linux/kernel.h>
135 #include <linux/types.h>
136 #include <linux/fcntl.h>
137 #include <linux/interrupt.h>
138 #include <linux/ioport.h>
139 #include <linux/in.h>
140 #include <linux/skbuff.h>
141 #include <linux/slab.h>
142 #include <linux/spinlock.h>
143 #include <linux/string.h>
144 #include <linux/init.h>
145 #include <linux/bitops.h>
146 #include <linux/delay.h>
147
148 #include <asm/system.h>
149 #include <asm/io.h>
150 #include <asm/irq.h>
151 #if ALLOW_DMA
152 #include <asm/dma.h>
153 #endif
154
155 #include "cs89x0.h"
156
157 static char version[] __initdata =
158 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n";
159
160 #define DRV_NAME "cs89x0"
161
162 /* First, a few definitions that the brave might change.
163 A zero-terminated list of I/O addresses to be probed. Some special flags..
164 Addr & 1 = Read back the address port, look for signature and reset
165 the page window before probing
166 Addr & 3 = Reset the page window and probe
167 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
168 but it is possible that a Cirrus board could be plugged into the ISA
169 slots. */
170 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
171 them to system IRQ numbers. This mapping is card specific and is set to
172 the configuration of the Cirrus Eval board for this chip. */
173 #ifdef CONFIG_ARCH_CLPS7500
174 static unsigned int netcard_portlist[] __used __initdata =
175 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
176 static unsigned int cs8900_irq_map[] = {12,0,0,0};
177 #elif defined(CONFIG_SH_HICOSH4)
178 static unsigned int netcard_portlist[] __used __initdata =
179 { 0x0300, 0};
180 static unsigned int cs8900_irq_map[] = {1,0,0,0};
181 #elif defined(CONFIG_MACH_IXDP2351)
182 static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
183 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
184 #include <asm/irq.h>
185 #elif defined(CONFIG_ARCH_IXDP2X01)
186 #include <asm/irq.h>
187 static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
188 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
189 #elif defined(CONFIG_ARCH_PNX010X)
190 #include <asm/irq.h>
191 #include <mach/gpio.h>
192 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
193 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
194 static unsigned int netcard_portlist[] __used __initdata = {CIRRUS_DEFAULT_BASE, 0};
195 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
196 #elif defined(CONFIG_MACH_MX31ADS)
197 #include <mach/board-mx31ads.h>
198 static unsigned int netcard_portlist[] __used __initdata = {
199 PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
200 };
201 static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
202 #else
203 static unsigned int netcard_portlist[] __used __initdata =
204 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
205 static unsigned int cs8900_irq_map[] = {10,11,12,5};
206 #endif
207
208 #if DEBUGGING
209 static unsigned int net_debug = DEBUGGING;
210 #else
211 #define net_debug 0 /* gcc will remove all the debug code for us */
212 #endif
213
214 /* The number of low I/O ports used by the ethercard. */
215 #define NETCARD_IO_EXTENT 16
216
217 /* we allow the user to override various values normally set in the EEPROM */
218 #define FORCE_RJ45 0x0001 /* pick one of these three */
219 #define FORCE_AUI 0x0002
220 #define FORCE_BNC 0x0004
221
222 #define FORCE_AUTO 0x0010 /* pick one of these three */
223 #define FORCE_HALF 0x0020
224 #define FORCE_FULL 0x0030
225
226 /* Information that need to be kept for each board. */
227 struct net_local {
228 struct net_device_stats stats;
229 int chip_type; /* one of: CS8900, CS8920, CS8920M */
230 char chip_revision; /* revision letter of the chip ('A'...) */
231 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
232 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
233 int adapter_cnf; /* adapter configuration from EEPROM */
234 int isa_config; /* ISA configuration from EEPROM */
235 int irq_map; /* IRQ map from EEPROM */
236 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
237 int curr_rx_cfg; /* a copy of PP_RxCFG */
238 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
239 int send_underrun; /* keep track of how many underruns in a row we get */
240 int force; /* force various values; see FORCE* above. */
241 spinlock_t lock;
242 #if ALLOW_DMA
243 int use_dma; /* Flag: we're using dma */
244 int dma; /* DMA channel */
245 int dmasize; /* 16 or 64 */
246 unsigned char *dma_buff; /* points to the beginning of the buffer */
247 unsigned char *end_dma_buff; /* points to the end of the buffer */
248 unsigned char *rx_dma_ptr; /* points to the next packet */
249 #endif
250 };
251
252 /* Index to functions, as function prototypes. */
253
254 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
255 static int net_open(struct net_device *dev);
256 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
257 static irqreturn_t net_interrupt(int irq, void *dev_id);
258 static void set_multicast_list(struct net_device *dev);
259 static void net_timeout(struct net_device *dev);
260 static void net_rx(struct net_device *dev);
261 static int net_close(struct net_device *dev);
262 static struct net_device_stats *net_get_stats(struct net_device *dev);
263 static void reset_chip(struct net_device *dev);
264 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
265 static int get_eeprom_cksum(int off, int len, int *buffer);
266 static int set_mac_address(struct net_device *dev, void *addr);
267 static void count_rx_errors(int status, struct net_local *lp);
268 #ifdef CONFIG_NET_POLL_CONTROLLER
269 static void net_poll_controller(struct net_device *dev);
270 #endif
271 #if ALLOW_DMA
272 static void get_dma_channel(struct net_device *dev);
273 static void release_dma_buff(struct net_local *lp);
274 #endif
275
276 /* Example routines you must write ;->. */
277 #define tx_done(dev) 1
278
279 /*
280 * Permit 'cs89x0_dma=N' in the kernel boot environment
281 */
282 #if !defined(MODULE) && (ALLOW_DMA != 0)
283 static int g_cs89x0_dma;
284
285 static int __init dma_fn(char *str)
286 {
287 g_cs89x0_dma = simple_strtol(str,NULL,0);
288 return 1;
289 }
290
291 __setup("cs89x0_dma=", dma_fn);
292 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
293
294 #ifndef MODULE
295 static int g_cs89x0_media__force;
296
297 static int __init media_fn(char *str)
298 {
299 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
300 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
301 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
302 return 1;
303 }
304
305 __setup("cs89x0_media=", media_fn);
306
307
308 /* Check for a network adaptor of this type, and return '0' iff one exists.
309 If dev->base_addr == 0, probe all likely locations.
310 If dev->base_addr == 1, always return failure.
311 If dev->base_addr == 2, allocate space for the device and return success
312 (detachable devices only).
313 Return 0 on success.
314 */
315
316 struct net_device * __init cs89x0_probe(int unit)
317 {
318 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
319 unsigned *port;
320 int err = 0;
321 int irq;
322 int io;
323
324 if (!dev)
325 return ERR_PTR(-ENODEV);
326
327 sprintf(dev->name, "eth%d", unit);
328 netdev_boot_setup_check(dev);
329 io = dev->base_addr;
330 irq = dev->irq;
331
332 if (net_debug)
333 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
334
335 if (io > 0x1ff) { /* Check a single specified location. */
336 err = cs89x0_probe1(dev, io, 0);
337 } else if (io != 0) { /* Don't probe at all. */
338 err = -ENXIO;
339 } else {
340 for (port = netcard_portlist; *port; port++) {
341 if (cs89x0_probe1(dev, *port, 0) == 0)
342 break;
343 dev->irq = irq;
344 }
345 if (!*port)
346 err = -ENODEV;
347 }
348 if (err)
349 goto out;
350 return dev;
351 out:
352 free_netdev(dev);
353 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
354 return ERR_PTR(err);
355 }
356 #endif
357
358 #if defined(CONFIG_MACH_IXDP2351)
359 static u16
360 readword(unsigned long base_addr, int portno)
361 {
362 return __raw_readw(base_addr + (portno << 1));
363 }
364
365 static void
366 writeword(unsigned long base_addr, int portno, u16 value)
367 {
368 __raw_writew(value, base_addr + (portno << 1));
369 }
370 #elif defined(CONFIG_ARCH_IXDP2X01)
371 static u16
372 readword(unsigned long base_addr, int portno)
373 {
374 return __raw_readl(base_addr + (portno << 1));
375 }
376
377 static void
378 writeword(unsigned long base_addr, int portno, u16 value)
379 {
380 __raw_writel(value, base_addr + (portno << 1));
381 }
382 #elif defined(CONFIG_ARCH_PNX010X)
383 static u16
384 readword(unsigned long base_addr, int portno)
385 {
386 return inw(base_addr + (portno << 1));
387 }
388
389 static void
390 writeword(unsigned long base_addr, int portno, u16 value)
391 {
392 outw(value, base_addr + (portno << 1));
393 }
394 #else
395 static u16
396 readword(unsigned long base_addr, int portno)
397 {
398 return inw(base_addr + portno);
399 }
400
401 static void
402 writeword(unsigned long base_addr, int portno, u16 value)
403 {
404 outw(value, base_addr + portno);
405 }
406 #endif
407
408 static void
409 readwords(unsigned long base_addr, int portno, void *buf, int length)
410 {
411 u8 *buf8 = (u8 *)buf;
412
413 do {
414 u16 tmp16;
415
416 tmp16 = readword(base_addr, portno);
417 *buf8++ = (u8)tmp16;
418 *buf8++ = (u8)(tmp16 >> 8);
419 } while (--length);
420 }
421
422 static void
423 writewords(unsigned long base_addr, int portno, void *buf, int length)
424 {
425 u8 *buf8 = (u8 *)buf;
426
427 do {
428 u16 tmp16;
429
430 tmp16 = *buf8++;
431 tmp16 |= (*buf8++) << 8;
432 writeword(base_addr, portno, tmp16);
433 } while (--length);
434 }
435
436 static u16
437 readreg(struct net_device *dev, u16 regno)
438 {
439 writeword(dev->base_addr, ADD_PORT, regno);
440 return readword(dev->base_addr, DATA_PORT);
441 }
442
443 static void
444 writereg(struct net_device *dev, u16 regno, u16 value)
445 {
446 writeword(dev->base_addr, ADD_PORT, regno);
447 writeword(dev->base_addr, DATA_PORT, value);
448 }
449
450 static int __init
451 wait_eeprom_ready(struct net_device *dev)
452 {
453 int timeout = jiffies;
454 /* check to see if the EEPROM is ready, a timeout is used -
455 just in case EEPROM is ready when SI_BUSY in the
456 PP_SelfST is clear */
457 while(readreg(dev, PP_SelfST) & SI_BUSY)
458 if (jiffies - timeout >= 40)
459 return -1;
460 return 0;
461 }
462
463 static int __init
464 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
465 {
466 int i;
467
468 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
469 for (i = 0; i < len; i++) {
470 if (wait_eeprom_ready(dev) < 0) return -1;
471 /* Now send the EEPROM read command and EEPROM location to read */
472 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
473 if (wait_eeprom_ready(dev) < 0) return -1;
474 buffer[i] = readreg(dev, PP_EEData);
475 if (net_debug > 3) printk("%04x ", buffer[i]);
476 }
477 if (net_debug > 3) printk("\n");
478 return 0;
479 }
480
481 static int __init
482 get_eeprom_cksum(int off, int len, int *buffer)
483 {
484 int i, cksum;
485
486 cksum = 0;
487 for (i = 0; i < len; i++)
488 cksum += buffer[i];
489 cksum &= 0xffff;
490 if (cksum == 0)
491 return 0;
492 return -1;
493 }
494
495 #ifdef CONFIG_NET_POLL_CONTROLLER
496 /*
497 * Polling receive - used by netconsole and other diagnostic tools
498 * to allow network i/o with interrupts disabled.
499 */
500 static void net_poll_controller(struct net_device *dev)
501 {
502 disable_irq(dev->irq);
503 net_interrupt(dev->irq, dev);
504 enable_irq(dev->irq);
505 }
506 #endif
507
508 /* This is the real probe routine. Linux has a history of friendly device
509 probes on the ISA bus. A good device probes avoids doing writes, and
510 verifies that the correct device exists and functions.
511 Return 0 on success.
512 */
513
514 static int __init
515 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
516 {
517 struct net_local *lp = netdev_priv(dev);
518 static unsigned version_printed;
519 int i;
520 int tmp;
521 unsigned rev_type = 0;
522 int eeprom_buff[CHKSUM_LEN];
523 int retval;
524
525 /* Initialize the device structure. */
526 if (!modular) {
527 memset(lp, 0, sizeof(*lp));
528 spin_lock_init(&lp->lock);
529 #ifndef MODULE
530 #if ALLOW_DMA
531 if (g_cs89x0_dma) {
532 lp->use_dma = 1;
533 lp->dma = g_cs89x0_dma;
534 lp->dmasize = 16; /* Could make this an option... */
535 }
536 #endif
537 lp->force = g_cs89x0_media__force;
538 #endif
539 }
540
541 #ifdef CONFIG_ARCH_PNX010X
542 initialize_ebi();
543
544 /* Map GPIO registers for the pins connected to the CS8900a. */
545 if (map_cirrus_gpio() < 0)
546 return -ENODEV;
547
548 reset_cirrus();
549
550 /* Map event-router registers. */
551 if (map_event_router() < 0)
552 return -ENODEV;
553
554 enable_cirrus_irq();
555
556 unmap_cirrus_gpio();
557 unmap_event_router();
558
559 dev->base_addr = ioaddr;
560
561 for (i = 0 ; i < 3 ; i++)
562 readreg(dev, 0);
563 #endif
564
565 /* Grab the region so we can find another board if autoIRQ fails. */
566 /* WTF is going on here? */
567 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
568 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
569 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
570 retval = -EBUSY;
571 goto out1;
572 }
573
574 #ifdef CONFIG_SH_HICOSH4
575 /* truely reset the chip */
576 writeword(ioaddr, ADD_PORT, 0x0114);
577 writeword(ioaddr, DATA_PORT, 0x0040);
578 #endif
579
580 /* if they give us an odd I/O address, then do ONE write to
581 the address port, to get it back to address zero, where we
582 expect to find the EISA signature word. An IO with a base of 0x3
583 will skip the test for the ADD_PORT. */
584 if (ioaddr & 1) {
585 if (net_debug > 1)
586 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
587 if ((ioaddr & 2) != 2)
588 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
589 printk(KERN_ERR "%s: bad signature 0x%x\n",
590 dev->name, readword(ioaddr & ~3, ADD_PORT));
591 retval = -ENODEV;
592 goto out2;
593 }
594 }
595
596 ioaddr &= ~3;
597 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
598 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
599 writeword(ioaddr, ADD_PORT, PP_ChipID);
600
601 tmp = readword(ioaddr, DATA_PORT);
602 if (tmp != CHIP_EISA_ID_SIG) {
603 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
604 CHIP_EISA_ID_SIG_STR "\n",
605 dev->name, ioaddr, DATA_PORT, tmp);
606 retval = -ENODEV;
607 goto out2;
608 }
609
610 /* Fill in the 'dev' fields. */
611 dev->base_addr = ioaddr;
612
613 /* get the chip type */
614 rev_type = readreg(dev, PRODUCT_ID_ADD);
615 lp->chip_type = rev_type &~ REVISON_BITS;
616 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
617
618 /* Check the chip type and revision in order to set the correct send command
619 CS8920 revision C and CS8900 revision F can use the faster send. */
620 lp->send_cmd = TX_AFTER_381;
621 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
622 lp->send_cmd = TX_NOW;
623 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
624 lp->send_cmd = TX_NOW;
625
626 if (net_debug && version_printed++ == 0)
627 printk(version);
628
629 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
630 dev->name,
631 lp->chip_type==CS8900?'0':'2',
632 lp->chip_type==CS8920M?"M":"",
633 lp->chip_revision,
634 dev->base_addr);
635
636 reset_chip(dev);
637
638 /* Here we read the current configuration of the chip. If there
639 is no Extended EEPROM then the idea is to not disturb the chip
640 configuration, it should have been correctly setup by automatic
641 EEPROM read on reset. So, if the chip says it read the EEPROM
642 the driver will always do *something* instead of complain that
643 adapter_cnf is 0. */
644
645 #ifdef CONFIG_SH_HICOSH4
646 if (1) {
647 /* For the HiCO.SH4 board, things are different: we don't
648 have EEPROM, but there is some data in flash, so we go
649 get it there directly (MAC). */
650 __u16 *confd;
651 short cnt;
652 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
653 == 0x006c3000) {
654 confd = (__u16*) 0xa0013fc0;
655 } else {
656 confd = (__u16*) 0xa001ffc0;
657 }
658 cnt = (*confd++ & 0x00ff) >> 1;
659 while (--cnt > 0) {
660 __u16 j = *confd++;
661
662 switch (j & 0x0fff) {
663 case PP_IA:
664 for (i = 0; i < ETH_ALEN/2; i++) {
665 dev->dev_addr[i*2] = confd[i] & 0xFF;
666 dev->dev_addr[i*2+1] = confd[i] >> 8;
667 }
668 break;
669 }
670 j = (j >> 12) + 1;
671 confd += j;
672 cnt -= j;
673 }
674 } else
675 #endif
676
677 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
678 (EEPROM_OK|EEPROM_PRESENT)) {
679 /* Load the MAC. */
680 for (i=0; i < ETH_ALEN/2; i++) {
681 unsigned int Addr;
682 Addr = readreg(dev, PP_IA+i*2);
683 dev->dev_addr[i*2] = Addr & 0xFF;
684 dev->dev_addr[i*2+1] = Addr >> 8;
685 }
686
687 /* Load the Adapter Configuration.
688 Note: Barring any more specific information from some
689 other source (ie EEPROM+Schematics), we would not know
690 how to operate a 10Base2 interface on the AUI port.
691 However, since we do read the status of HCB1 and use
692 settings that always result in calls to control_dc_dc(dev,0)
693 a BNC interface should work if the enable pin
694 (dc/dc converter) is on HCB1. It will be called AUI
695 however. */
696
697 lp->adapter_cnf = 0;
698 i = readreg(dev, PP_LineCTL);
699 /* Preserve the setting of the HCB1 pin. */
700 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
701 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
702 /* Save the sqelch bit */
703 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
704 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
705 /* Check if the card is in 10Base-t only mode */
706 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
707 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
708 /* Check if the card is in AUI only mode */
709 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
710 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
711 /* Check if the card is in Auto mode. */
712 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
713 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
714 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
715
716 if (net_debug > 1)
717 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
718 dev->name, i, lp->adapter_cnf);
719
720 /* IRQ. Other chips already probe, see below. */
721 if (lp->chip_type == CS8900)
722 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
723
724 printk( "[Cirrus EEPROM] ");
725 }
726
727 printk("\n");
728
729 /* First check to see if an EEPROM is attached. */
730 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
731 if (1) {
732 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
733 } else
734 #endif
735 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
736 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
737 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
738 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
739 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
740 /* Check if the chip was able to read its own configuration starting
741 at 0 in the EEPROM*/
742 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
743 (EEPROM_OK|EEPROM_PRESENT))
744 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
745
746 } else {
747 /* This reads an extended EEPROM that is not documented
748 in the CS8900 datasheet. */
749
750 /* get transmission control word but keep the autonegotiation bits */
751 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
752 /* Store adapter configuration */
753 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
754 /* Store ISA configuration */
755 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
756 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
757
758 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
759 /* store the initial memory base address */
760 for (i = 0; i < ETH_ALEN/2; i++) {
761 dev->dev_addr[i*2] = eeprom_buff[i];
762 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
763 }
764 if (net_debug > 1)
765 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
766 dev->name, lp->adapter_cnf);
767 }
768
769 /* allow them to force multiple transceivers. If they force multiple, autosense */
770 {
771 int count = 0;
772 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
773 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
774 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
775 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
776 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
777 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
778 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
779 }
780
781 if (net_debug > 1)
782 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
783 dev->name, lp->force, lp->adapter_cnf);
784
785 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
786
787 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
788
789 /* FIXME: we don't set the Ethernet address on the command line. Use
790 ifconfig IFACE hw ether AABBCCDDEEFF */
791
792 printk(KERN_INFO "cs89x0 media %s%s%s",
793 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
794 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
795 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
796
797 lp->irq_map = 0xffff;
798
799 /* If this is a CS8900 then no pnp soft */
800 if (lp->chip_type != CS8900 &&
801 /* Check if the ISA IRQ has been set */
802 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
803 (i != 0 && i < CS8920_NO_INTS))) {
804 if (!dev->irq)
805 dev->irq = i;
806 } else {
807 i = lp->isa_config & INT_NO_MASK;
808 if (lp->chip_type == CS8900) {
809 #ifdef CONFIG_CS89x0_NONISA_IRQ
810 i = cs8900_irq_map[0];
811 #else
812 /* Translate the IRQ using the IRQ mapping table. */
813 if (i >= ARRAY_SIZE(cs8900_irq_map))
814 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
815 else
816 i = cs8900_irq_map[i];
817
818 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
819 } else {
820 int irq_map_buff[IRQ_MAP_LEN/2];
821
822 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
823 IRQ_MAP_LEN/2,
824 irq_map_buff) >= 0) {
825 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
826 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
827 }
828 #endif
829 }
830 if (!dev->irq)
831 dev->irq = i;
832 }
833
834 printk(" IRQ %d", dev->irq);
835
836 #if ALLOW_DMA
837 if (lp->use_dma) {
838 get_dma_channel(dev);
839 printk(", DMA %d", dev->dma);
840 }
841 else
842 #endif
843 {
844 printk(", programmed I/O");
845 }
846
847 /* print the ethernet address. */
848 printk(", MAC %pM", dev->dev_addr);
849
850 dev->open = net_open;
851 dev->stop = net_close;
852 dev->tx_timeout = net_timeout;
853 dev->watchdog_timeo = HZ;
854 dev->hard_start_xmit = net_send_packet;
855 dev->get_stats = net_get_stats;
856 dev->set_multicast_list = set_multicast_list;
857 dev->set_mac_address = set_mac_address;
858 #ifdef CONFIG_NET_POLL_CONTROLLER
859 dev->poll_controller = net_poll_controller;
860 #endif
861
862 printk("\n");
863 if (net_debug)
864 printk("cs89x0_probe1() successful\n");
865
866 retval = register_netdev(dev);
867 if (retval)
868 goto out3;
869 return 0;
870 out3:
871 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
872 out2:
873 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
874 out1:
875 return retval;
876 }
877
878
879 /*********************************
880 * This page contains DMA routines
881 **********************************/
882
883 #if ALLOW_DMA
884
885 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
886
887 static void
888 get_dma_channel(struct net_device *dev)
889 {
890 struct net_local *lp = netdev_priv(dev);
891
892 if (lp->dma) {
893 dev->dma = lp->dma;
894 lp->isa_config |= ISA_RxDMA;
895 } else {
896 if ((lp->isa_config & ANY_ISA_DMA) == 0)
897 return;
898 dev->dma = lp->isa_config & DMA_NO_MASK;
899 if (lp->chip_type == CS8900)
900 dev->dma += 5;
901 if (dev->dma < 5 || dev->dma > 7) {
902 lp->isa_config &= ~ANY_ISA_DMA;
903 return;
904 }
905 }
906 return;
907 }
908
909 static void
910 write_dma(struct net_device *dev, int chip_type, int dma)
911 {
912 struct net_local *lp = netdev_priv(dev);
913 if ((lp->isa_config & ANY_ISA_DMA) == 0)
914 return;
915 if (chip_type == CS8900) {
916 writereg(dev, PP_CS8900_ISADMA, dma-5);
917 } else {
918 writereg(dev, PP_CS8920_ISADMA, dma);
919 }
920 }
921
922 static void
923 set_dma_cfg(struct net_device *dev)
924 {
925 struct net_local *lp = netdev_priv(dev);
926
927 if (lp->use_dma) {
928 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
929 if (net_debug > 3)
930 printk("set_dma_cfg(): no DMA\n");
931 return;
932 }
933 if (lp->isa_config & ISA_RxDMA) {
934 lp->curr_rx_cfg |= RX_DMA_ONLY;
935 if (net_debug > 3)
936 printk("set_dma_cfg(): RX_DMA_ONLY\n");
937 } else {
938 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
939 if (net_debug > 3)
940 printk("set_dma_cfg(): AUTO_RX_DMA\n");
941 }
942 }
943 }
944
945 static int
946 dma_bufcfg(struct net_device *dev)
947 {
948 struct net_local *lp = netdev_priv(dev);
949 if (lp->use_dma)
950 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
951 else
952 return 0;
953 }
954
955 static int
956 dma_busctl(struct net_device *dev)
957 {
958 int retval = 0;
959 struct net_local *lp = netdev_priv(dev);
960 if (lp->use_dma) {
961 if (lp->isa_config & ANY_ISA_DMA)
962 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
963 if (lp->isa_config & DMA_BURST)
964 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
965 if (lp->dmasize == 64)
966 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
967 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
968 }
969 return retval;
970 }
971
972 static void
973 dma_rx(struct net_device *dev)
974 {
975 struct net_local *lp = netdev_priv(dev);
976 struct sk_buff *skb;
977 int status, length;
978 unsigned char *bp = lp->rx_dma_ptr;
979
980 status = bp[0] + (bp[1]<<8);
981 length = bp[2] + (bp[3]<<8);
982 bp += 4;
983 if (net_debug > 5) {
984 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
985 dev->name, (unsigned long)bp, status, length);
986 }
987 if ((status & RX_OK) == 0) {
988 count_rx_errors(status, lp);
989 goto skip_this_frame;
990 }
991
992 /* Malloc up new buffer. */
993 skb = dev_alloc_skb(length + 2);
994 if (skb == NULL) {
995 if (net_debug) /* I don't think we want to do this to a stressed system */
996 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
997 lp->stats.rx_dropped++;
998
999 /* AKPM: advance bp to the next frame */
1000 skip_this_frame:
1001 bp += (length + 3) & ~3;
1002 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1003 lp->rx_dma_ptr = bp;
1004 return;
1005 }
1006 skb_reserve(skb, 2); /* longword align L3 header */
1007
1008 if (bp + length > lp->end_dma_buff) {
1009 int semi_cnt = lp->end_dma_buff - bp;
1010 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
1011 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
1012 length - semi_cnt);
1013 } else {
1014 memcpy(skb_put(skb,length), bp, length);
1015 }
1016 bp += (length + 3) & ~3;
1017 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1018 lp->rx_dma_ptr = bp;
1019
1020 if (net_debug > 3) {
1021 printk( "%s: received %d byte DMA packet of type %x\n",
1022 dev->name, length,
1023 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1024 }
1025 skb->protocol=eth_type_trans(skb,dev);
1026 netif_rx(skb);
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_MX31ADS)
1036 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1037 struct net_local *lp = netdev_priv(dev);
1038 int ioaddr = dev->base_addr;
1039 #endif
1040 int reset_start_time;
1041
1042 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1043
1044 /* wait 30 ms */
1045 msleep(30);
1046
1047 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1048 if (lp->chip_type != CS8900) {
1049 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1050 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1051 outb(dev->irq, ioaddr + DATA_PORT);
1052 outb(0, ioaddr + DATA_PORT + 1);
1053
1054 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1055 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1056 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1057 }
1058 #endif /* IXDP2x01 */
1059
1060 /* Wait until the chip is reset */
1061 reset_start_time = jiffies;
1062 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1063 ;
1064 #endif /* !CONFIG_MACH_MX31ADS */
1065 }
1066
1067
1068 static void
1069 control_dc_dc(struct net_device *dev, int on_not_off)
1070 {
1071 struct net_local *lp = netdev_priv(dev);
1072 unsigned int selfcontrol;
1073 int timenow = jiffies;
1074 /* control the DC to DC convertor in the SelfControl register.
1075 Note: This is hooked up to a general purpose pin, might not
1076 always be a DC to DC convertor. */
1077
1078 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1079 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1080 selfcontrol |= HCB1;
1081 else
1082 selfcontrol &= ~HCB1;
1083 writereg(dev, PP_SelfCTL, selfcontrol);
1084
1085 /* Wait for the DC/DC converter to power up - 500ms */
1086 while (jiffies - timenow < HZ)
1087 ;
1088 }
1089
1090 #define DETECTED_NONE 0
1091 #define DETECTED_RJ45H 1
1092 #define DETECTED_RJ45F 2
1093 #define DETECTED_AUI 3
1094 #define DETECTED_BNC 4
1095
1096 static int
1097 detect_tp(struct net_device *dev)
1098 {
1099 struct net_local *lp = netdev_priv(dev);
1100 int timenow = jiffies;
1101 int fdx;
1102
1103 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1104
1105 /* If connected to another full duplex capable 10-Base-T card the link pulses
1106 seem to be lost when the auto detect bit in the LineCTL is set.
1107 To overcome this the auto detect bit will be cleared whilst testing the
1108 10-Base-T interface. This would not be necessary for the sparrow chip but
1109 is simpler to do it anyway. */
1110 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1111 control_dc_dc(dev, 0);
1112
1113 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1114 for (timenow = jiffies; jiffies - timenow < 15; )
1115 ;
1116 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1117 return DETECTED_NONE;
1118
1119 if (lp->chip_type == CS8900) {
1120 switch (lp->force & 0xf0) {
1121 #if 0
1122 case FORCE_AUTO:
1123 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1124 return DETECTED_NONE;
1125 #endif
1126 /* CS8900 doesn't support AUTO, change to HALF*/
1127 case FORCE_AUTO:
1128 lp->force &= ~FORCE_AUTO;
1129 lp->force |= FORCE_HALF;
1130 break;
1131 case FORCE_HALF:
1132 break;
1133 case FORCE_FULL:
1134 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1135 break;
1136 }
1137 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1138 } else {
1139 switch (lp->force & 0xf0) {
1140 case FORCE_AUTO:
1141 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1142 break;
1143 case FORCE_HALF:
1144 lp->auto_neg_cnf = 0;
1145 break;
1146 case FORCE_FULL:
1147 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1148 break;
1149 }
1150
1151 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1152
1153 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1154 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1155 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1156 if (jiffies - timenow > 4000) {
1157 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1158 break;
1159 }
1160 }
1161 }
1162 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1163 }
1164 if (fdx)
1165 return DETECTED_RJ45F;
1166 else
1167 return DETECTED_RJ45H;
1168 }
1169
1170 /* send a test packet - return true if carrier bits are ok */
1171 static int
1172 send_test_pkt(struct net_device *dev)
1173 {
1174 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1175 0, 46, /* A 46 in network order */
1176 0, 0, /* DSAP=0 & SSAP=0 fields */
1177 0xf3, 0 /* Control (Test Req + P bit set) */ };
1178 long timenow = jiffies;
1179
1180 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1181
1182 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1183 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1184
1185 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1186 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1187
1188 /* Test to see if the chip has allocated memory for the packet */
1189 while (jiffies - timenow < 5)
1190 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1191 break;
1192 if (jiffies - timenow >= 5)
1193 return 0; /* this shouldn't happen */
1194
1195 /* Write the contents of the packet */
1196 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1197
1198 if (net_debug > 1) printk("Sending test packet ");
1199 /* wait a couple of jiffies for packet to be received */
1200 for (timenow = jiffies; jiffies - timenow < 3; )
1201 ;
1202 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1203 if (net_debug > 1) printk("succeeded\n");
1204 return 1;
1205 }
1206 if (net_debug > 1) printk("failed\n");
1207 return 0;
1208 }
1209
1210
1211 static int
1212 detect_aui(struct net_device *dev)
1213 {
1214 struct net_local *lp = netdev_priv(dev);
1215
1216 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1217 control_dc_dc(dev, 0);
1218
1219 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1220
1221 if (send_test_pkt(dev))
1222 return DETECTED_AUI;
1223 else
1224 return DETECTED_NONE;
1225 }
1226
1227 static int
1228 detect_bnc(struct net_device *dev)
1229 {
1230 struct net_local *lp = netdev_priv(dev);
1231
1232 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1233 control_dc_dc(dev, 1);
1234
1235 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1236
1237 if (send_test_pkt(dev))
1238 return DETECTED_BNC;
1239 else
1240 return DETECTED_NONE;
1241 }
1242
1243
1244 static void
1245 write_irq(struct net_device *dev, int chip_type, int irq)
1246 {
1247 int i;
1248
1249 if (chip_type == CS8900) {
1250 /* Search the mapping table for the corresponding IRQ pin. */
1251 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
1252 if (cs8900_irq_map[i] == irq)
1253 break;
1254 /* Not found */
1255 if (i == ARRAY_SIZE(cs8900_irq_map))
1256 i = 3;
1257 writereg(dev, PP_CS8900_ISAINT, i);
1258 } else {
1259 writereg(dev, PP_CS8920_ISAINT, irq);
1260 }
1261 }
1262
1263 /* Open/initialize the board. This is called (in the current kernel)
1264 sometime after booting when the 'ifconfig' program is run.
1265
1266 This routine should set everything up anew at each open, even
1267 registers that "should" only need to be set once at boot, so that
1268 there is non-reboot way to recover if something goes wrong.
1269 */
1270
1271 /* AKPM: do we need to do any locking here? */
1272
1273 static int
1274 net_open(struct net_device *dev)
1275 {
1276 struct net_local *lp = netdev_priv(dev);
1277 int result = 0;
1278 int i;
1279 int ret;
1280
1281 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1282 if (dev->irq < 2) {
1283 /* Allow interrupts to be generated by the chip */
1284 /* Cirrus' release had this: */
1285 #if 0
1286 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1287 #endif
1288 /* And 2.3.47 had this: */
1289 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1290
1291 for (i = 2; i < CS8920_NO_INTS; i++) {
1292 if ((1 << i) & lp->irq_map) {
1293 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1294 dev->irq = i;
1295 write_irq(dev, lp->chip_type, i);
1296 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1297 break;
1298 }
1299 }
1300 }
1301
1302 if (i >= CS8920_NO_INTS) {
1303 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1304 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1305 ret = -EAGAIN;
1306 goto bad_out;
1307 }
1308 }
1309 else
1310 #endif
1311 {
1312 #ifndef CONFIG_CS89x0_NONISA_IRQ
1313 if (((1 << dev->irq) & lp->irq_map) == 0) {
1314 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1315 dev->name, dev->irq, lp->irq_map);
1316 ret = -EAGAIN;
1317 goto bad_out;
1318 }
1319 #endif
1320 /* FIXME: Cirrus' release had this: */
1321 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1322 /* And 2.3.47 had this: */
1323 #if 0
1324 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1325 #endif
1326 write_irq(dev, lp->chip_type, dev->irq);
1327 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1328 if (ret) {
1329 if (net_debug)
1330 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1331 goto bad_out;
1332 }
1333 }
1334
1335 #if ALLOW_DMA
1336 if (lp->use_dma) {
1337 if (lp->isa_config & ANY_ISA_DMA) {
1338 unsigned long flags;
1339 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1340 get_order(lp->dmasize * 1024));
1341
1342 if (!lp->dma_buff) {
1343 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1344 goto release_irq;
1345 }
1346 if (net_debug > 1) {
1347 printk( "%s: dma %lx %lx\n",
1348 dev->name,
1349 (unsigned long)lp->dma_buff,
1350 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1351 }
1352 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1353 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1354 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1355 goto release_irq;
1356 }
1357 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1358 if (request_dma(dev->dma, dev->name)) {
1359 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1360 goto release_irq;
1361 }
1362 write_dma(dev, lp->chip_type, dev->dma);
1363 lp->rx_dma_ptr = lp->dma_buff;
1364 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1365 spin_lock_irqsave(&lp->lock, flags);
1366 disable_dma(dev->dma);
1367 clear_dma_ff(dev->dma);
1368 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1369 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1370 set_dma_count(dev->dma, lp->dmasize*1024);
1371 enable_dma(dev->dma);
1372 spin_unlock_irqrestore(&lp->lock, flags);
1373 }
1374 }
1375 #endif /* ALLOW_DMA */
1376
1377 /* set the Ethernet address */
1378 for (i=0; i < ETH_ALEN/2; i++)
1379 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1380
1381 /* while we're testing the interface, leave interrupts disabled */
1382 writereg(dev, PP_BusCTL, MEMORY_ON);
1383
1384 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1385 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1386 lp->linectl = LOW_RX_SQUELCH;
1387 else
1388 lp->linectl = 0;
1389
1390 /* check to make sure that they have the "right" hardware available */
1391 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1392 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1393 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1394 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1395 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1396 }
1397 #ifdef CONFIG_ARCH_PNX010X
1398 result = A_CNF_10B_T;
1399 #endif
1400 if (!result) {
1401 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1402 release_dma:
1403 #if ALLOW_DMA
1404 free_dma(dev->dma);
1405 release_irq:
1406 release_dma_buff(lp);
1407 #endif
1408 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1409 free_irq(dev->irq, dev);
1410 ret = -EAGAIN;
1411 goto bad_out;
1412 }
1413
1414 /* set the hardware to the configured choice */
1415 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1416 case A_CNF_MEDIA_10B_T:
1417 result = detect_tp(dev);
1418 if (result==DETECTED_NONE) {
1419 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1420 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1421 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1422 }
1423 break;
1424 case A_CNF_MEDIA_AUI:
1425 result = detect_aui(dev);
1426 if (result==DETECTED_NONE) {
1427 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1428 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1429 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1430 }
1431 break;
1432 case A_CNF_MEDIA_10B_2:
1433 result = detect_bnc(dev);
1434 if (result==DETECTED_NONE) {
1435 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1436 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1437 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1438 }
1439 break;
1440 case A_CNF_MEDIA_AUTO:
1441 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1442 if (lp->adapter_cnf & A_CNF_10B_T)
1443 if ((result = detect_tp(dev)) != DETECTED_NONE)
1444 break;
1445 if (lp->adapter_cnf & A_CNF_AUI)
1446 if ((result = detect_aui(dev)) != DETECTED_NONE)
1447 break;
1448 if (lp->adapter_cnf & A_CNF_10B_2)
1449 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1450 break;
1451 printk(KERN_ERR "%s: no media detected\n", dev->name);
1452 goto release_dma;
1453 }
1454 switch(result) {
1455 case DETECTED_NONE:
1456 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1457 goto release_dma;
1458 case DETECTED_RJ45H:
1459 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1460 break;
1461 case DETECTED_RJ45F:
1462 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1463 break;
1464 case DETECTED_AUI:
1465 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1466 break;
1467 case DETECTED_BNC:
1468 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1469 break;
1470 }
1471
1472 /* Turn on both receive and transmit operations */
1473 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1474
1475 /* Receive only error free packets addressed to this card */
1476 lp->rx_mode = 0;
1477 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1478
1479 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1480
1481 if (lp->isa_config & STREAM_TRANSFER)
1482 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1483 #if ALLOW_DMA
1484 set_dma_cfg(dev);
1485 #endif
1486 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1487
1488 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1489 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1490
1491 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1492 #if ALLOW_DMA
1493 dma_bufcfg(dev) |
1494 #endif
1495 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1496
1497 /* now that we've got our act together, enable everything */
1498 writereg(dev, PP_BusCTL, ENABLE_IRQ
1499 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1500 #if ALLOW_DMA
1501 | dma_busctl(dev)
1502 #endif
1503 );
1504 netif_start_queue(dev);
1505 if (net_debug > 1)
1506 printk("cs89x0: net_open() succeeded\n");
1507 return 0;
1508 bad_out:
1509 return ret;
1510 }
1511
1512 static void net_timeout(struct net_device *dev)
1513 {
1514 /* If we get here, some higher level has decided we are broken.
1515 There should really be a "kick me" function call instead. */
1516 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1517 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1518 /* Try to restart the adaptor. */
1519 netif_wake_queue(dev);
1520 }
1521
1522 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1523 {
1524 struct net_local *lp = netdev_priv(dev);
1525
1526 if (net_debug > 3) {
1527 printk("%s: sent %d byte packet of type %x\n",
1528 dev->name, skb->len,
1529 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1530 }
1531
1532 /* keep the upload from being interrupted, since we
1533 ask the chip to start transmitting before the
1534 whole packet has been completely uploaded. */
1535
1536 spin_lock_irq(&lp->lock);
1537 netif_stop_queue(dev);
1538
1539 /* initiate a transmit sequence */
1540 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1541 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1542
1543 /* Test to see if the chip has allocated memory for the packet */
1544 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1545 /*
1546 * Gasp! It hasn't. But that shouldn't happen since
1547 * we're waiting for TxOk, so return 1 and requeue this packet.
1548 */
1549
1550 spin_unlock_irq(&lp->lock);
1551 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1552 return 1;
1553 }
1554 /* Write the contents of the packet */
1555 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1556 spin_unlock_irq(&lp->lock);
1557 lp->stats.tx_bytes += skb->len;
1558 dev->trans_start = jiffies;
1559 dev_kfree_skb (skb);
1560
1561 /*
1562 * We DO NOT call netif_wake_queue() here.
1563 * We also DO NOT call netif_start_queue().
1564 *
1565 * Either of these would cause another bottom half run through
1566 * net_send_packet() before this packet has fully gone out. That causes
1567 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1568 * a dog. We just return and wait for the Tx completion interrupt handler
1569 * to restart the netdevice layer
1570 */
1571
1572 return 0;
1573 }
1574
1575 /* The typical workload of the driver:
1576 Handle the network interface interrupts. */
1577
1578 static irqreturn_t net_interrupt(int irq, void *dev_id)
1579 {
1580 struct net_device *dev = dev_id;
1581 struct net_local *lp;
1582 int ioaddr, status;
1583 int handled = 0;
1584
1585 ioaddr = dev->base_addr;
1586 lp = netdev_priv(dev);
1587
1588 /* we MUST read all the events out of the ISQ, otherwise we'll never
1589 get interrupted again. As a consequence, we can't have any limit
1590 on the number of times we loop in the interrupt handler. The
1591 hardware guarantees that eventually we'll run out of events. Of
1592 course, if you're on a slow machine, and packets are arriving
1593 faster than you can read them off, you're screwed. Hasta la
1594 vista, baby! */
1595 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1596 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1597 handled = 1;
1598 switch(status & ISQ_EVENT_MASK) {
1599 case ISQ_RECEIVER_EVENT:
1600 /* Got a packet(s). */
1601 net_rx(dev);
1602 break;
1603 case ISQ_TRANSMITTER_EVENT:
1604 lp->stats.tx_packets++;
1605 netif_wake_queue(dev); /* Inform upper layers. */
1606 if ((status & ( TX_OK |
1607 TX_LOST_CRS |
1608 TX_SQE_ERROR |
1609 TX_LATE_COL |
1610 TX_16_COL)) != TX_OK) {
1611 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1612 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1613 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1614 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1615 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1616 }
1617 break;
1618 case ISQ_BUFFER_EVENT:
1619 if (status & READY_FOR_TX) {
1620 /* we tried to transmit a packet earlier,
1621 but inexplicably ran out of buffers.
1622 That shouldn't happen since we only ever
1623 load one packet. Shrug. Do the right
1624 thing anyway. */
1625 netif_wake_queue(dev); /* Inform upper layers. */
1626 }
1627 if (status & TX_UNDERRUN) {
1628 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1629 lp->send_underrun++;
1630 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1631 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1632 /* transmit cycle is done, although
1633 frame wasn't transmitted - this
1634 avoids having to wait for the upper
1635 layers to timeout on us, in the
1636 event of a tx underrun */
1637 netif_wake_queue(dev); /* Inform upper layers. */
1638 }
1639 #if ALLOW_DMA
1640 if (lp->use_dma && (status & RX_DMA)) {
1641 int count = readreg(dev, PP_DmaFrameCnt);
1642 while(count) {
1643 if (net_debug > 5)
1644 printk("%s: receiving %d DMA frames\n", dev->name, count);
1645 if (net_debug > 2 && count >1)
1646 printk("%s: receiving %d DMA frames\n", dev->name, count);
1647 dma_rx(dev);
1648 if (--count == 0)
1649 count = readreg(dev, PP_DmaFrameCnt);
1650 if (net_debug > 2 && count > 0)
1651 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1652 }
1653 }
1654 #endif
1655 break;
1656 case ISQ_RX_MISS_EVENT:
1657 lp->stats.rx_missed_errors += (status >>6);
1658 break;
1659 case ISQ_TX_COL_EVENT:
1660 lp->stats.collisions += (status >>6);
1661 break;
1662 }
1663 }
1664 return IRQ_RETVAL(handled);
1665 }
1666
1667 static void
1668 count_rx_errors(int status, struct net_local *lp)
1669 {
1670 lp->stats.rx_errors++;
1671 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1672 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1673 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1674 /* per str 172 */
1675 lp->stats.rx_crc_errors++;
1676 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1677 return;
1678 }
1679
1680 /* We have a good packet(s), get it/them out of the buffers. */
1681 static void
1682 net_rx(struct net_device *dev)
1683 {
1684 struct net_local *lp = netdev_priv(dev);
1685 struct sk_buff *skb;
1686 int status, length;
1687
1688 int ioaddr = dev->base_addr;
1689 status = readword(ioaddr, RX_FRAME_PORT);
1690 length = readword(ioaddr, RX_FRAME_PORT);
1691
1692 if ((status & RX_OK) == 0) {
1693 count_rx_errors(status, lp);
1694 return;
1695 }
1696
1697 /* Malloc up new buffer. */
1698 skb = dev_alloc_skb(length + 2);
1699 if (skb == NULL) {
1700 #if 0 /* Again, this seems a cruel thing to do */
1701 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1702 #endif
1703 lp->stats.rx_dropped++;
1704 return;
1705 }
1706 skb_reserve(skb, 2); /* longword align L3 header */
1707
1708 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1709 if (length & 1)
1710 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1711
1712 if (net_debug > 3) {
1713 printk( "%s: received %d byte packet of type %x\n",
1714 dev->name, length,
1715 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1716 }
1717
1718 skb->protocol=eth_type_trans(skb,dev);
1719 netif_rx(skb);
1720 lp->stats.rx_packets++;
1721 lp->stats.rx_bytes += length;
1722 }
1723
1724 #if ALLOW_DMA
1725 static void release_dma_buff(struct net_local *lp)
1726 {
1727 if (lp->dma_buff) {
1728 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1729 lp->dma_buff = NULL;
1730 }
1731 }
1732 #endif
1733
1734 /* The inverse routine to net_open(). */
1735 static int
1736 net_close(struct net_device *dev)
1737 {
1738 #if ALLOW_DMA
1739 struct net_local *lp = netdev_priv(dev);
1740 #endif
1741
1742 netif_stop_queue(dev);
1743
1744 writereg(dev, PP_RxCFG, 0);
1745 writereg(dev, PP_TxCFG, 0);
1746 writereg(dev, PP_BufCFG, 0);
1747 writereg(dev, PP_BusCTL, 0);
1748
1749 free_irq(dev->irq, dev);
1750
1751 #if ALLOW_DMA
1752 if (lp->use_dma && lp->dma) {
1753 free_dma(dev->dma);
1754 release_dma_buff(lp);
1755 }
1756 #endif
1757
1758 /* Update the statistics here. */
1759 return 0;
1760 }
1761
1762 /* Get the current statistics. This may be called with the card open or
1763 closed. */
1764 static struct net_device_stats *
1765 net_get_stats(struct net_device *dev)
1766 {
1767 struct net_local *lp = netdev_priv(dev);
1768 unsigned long flags;
1769
1770 spin_lock_irqsave(&lp->lock, flags);
1771 /* Update the statistics from the device registers. */
1772 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1773 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1774 spin_unlock_irqrestore(&lp->lock, flags);
1775
1776 return &lp->stats;
1777 }
1778
1779 static void set_multicast_list(struct net_device *dev)
1780 {
1781 struct net_local *lp = netdev_priv(dev);
1782 unsigned long flags;
1783
1784 spin_lock_irqsave(&lp->lock, flags);
1785 if(dev->flags&IFF_PROMISC)
1786 {
1787 lp->rx_mode = RX_ALL_ACCEPT;
1788 }
1789 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1790 {
1791 /* The multicast-accept list is initialized to accept-all, and we
1792 rely on higher-level filtering for now. */
1793 lp->rx_mode = RX_MULTCAST_ACCEPT;
1794 }
1795 else
1796 lp->rx_mode = 0;
1797
1798 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1799
1800 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1801 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1802 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1803 spin_unlock_irqrestore(&lp->lock, flags);
1804 }
1805
1806
1807 static int set_mac_address(struct net_device *dev, void *p)
1808 {
1809 int i;
1810 struct sockaddr *addr = p;
1811
1812 if (netif_running(dev))
1813 return -EBUSY;
1814
1815 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1816
1817 if (net_debug)
1818 printk("%s: Setting MAC address to %pM.\n",
1819 dev->name, dev->dev_addr);
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");
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 */
kernel source for telekom puls (alcatel/mediatek)