]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - drivers/net/cs89x0.c
projects / mirror_ubuntu-eoan-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'for-rmk-realview' of git://linux-arm.org/linux-2.6 into devel
[mirror_ubuntu-eoan-kernel.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 #if defined(CONFIG_SH_HICOSH4)
174 static unsigned int netcard_portlist[] __used __initdata =
175 { 0x0300, 0};
176 static unsigned int cs8900_irq_map[] = {1,0,0,0};
177 #elif defined(CONFIG_MACH_IXDP2351)
178 static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
179 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
180 #include <asm/irq.h>
181 #elif defined(CONFIG_ARCH_IXDP2X01)
182 #include <asm/irq.h>
183 static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
184 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
185 #elif defined(CONFIG_ARCH_PNX010X)
186 #include <asm/irq.h>
187 #include <mach/gpio.h>
188 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
189 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
190 static unsigned int netcard_portlist[] __used __initdata = {CIRRUS_DEFAULT_BASE, 0};
191 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
192 #elif defined(CONFIG_MACH_MX31ADS)
193 #include <mach/board-mx31ads.h>
194 static unsigned int netcard_portlist[] __used __initdata = {
195 PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
196 };
197 static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
198 #else
199 static unsigned int netcard_portlist[] __used __initdata =
200 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
201 static unsigned int cs8900_irq_map[] = {10,11,12,5};
202 #endif
203
204 #if DEBUGGING
205 static unsigned int net_debug = DEBUGGING;
206 #else
207 #define net_debug 0 /* gcc will remove all the debug code for us */
208 #endif
209
210 /* The number of low I/O ports used by the ethercard. */
211 #define NETCARD_IO_EXTENT 16
212
213 /* we allow the user to override various values normally set in the EEPROM */
214 #define FORCE_RJ45 0x0001 /* pick one of these three */
215 #define FORCE_AUI 0x0002
216 #define FORCE_BNC 0x0004
217
218 #define FORCE_AUTO 0x0010 /* pick one of these three */
219 #define FORCE_HALF 0x0020
220 #define FORCE_FULL 0x0030
221
222 /* Information that need to be kept for each board. */
223 struct net_local {
224 struct net_device_stats stats;
225 int chip_type; /* one of: CS8900, CS8920, CS8920M */
226 char chip_revision; /* revision letter of the chip ('A'...) */
227 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
228 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
229 int adapter_cnf; /* adapter configuration from EEPROM */
230 int isa_config; /* ISA configuration from EEPROM */
231 int irq_map; /* IRQ map from EEPROM */
232 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
233 int curr_rx_cfg; /* a copy of PP_RxCFG */
234 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
235 int send_underrun; /* keep track of how many underruns in a row we get */
236 int force; /* force various values; see FORCE* above. */
237 spinlock_t lock;
238 #if ALLOW_DMA
239 int use_dma; /* Flag: we're using dma */
240 int dma; /* DMA channel */
241 int dmasize; /* 16 or 64 */
242 unsigned char *dma_buff; /* points to the beginning of the buffer */
243 unsigned char *end_dma_buff; /* points to the end of the buffer */
244 unsigned char *rx_dma_ptr; /* points to the next packet */
245 #endif
246 };
247
248 /* Index to functions, as function prototypes. */
249
250 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
251 static int net_open(struct net_device *dev);
252 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
253 static irqreturn_t net_interrupt(int irq, void *dev_id);
254 static void set_multicast_list(struct net_device *dev);
255 static void net_timeout(struct net_device *dev);
256 static void net_rx(struct net_device *dev);
257 static int net_close(struct net_device *dev);
258 static struct net_device_stats *net_get_stats(struct net_device *dev);
259 static void reset_chip(struct net_device *dev);
260 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
261 static int get_eeprom_cksum(int off, int len, int *buffer);
262 static int set_mac_address(struct net_device *dev, void *addr);
263 static void count_rx_errors(int status, struct net_local *lp);
264 #ifdef CONFIG_NET_POLL_CONTROLLER
265 static void net_poll_controller(struct net_device *dev);
266 #endif
267 #if ALLOW_DMA
268 static void get_dma_channel(struct net_device *dev);
269 static void release_dma_buff(struct net_local *lp);
270 #endif
271
272 /* Example routines you must write ;->. */
273 #define tx_done(dev) 1
274
275 /*
276 * Permit 'cs89x0_dma=N' in the kernel boot environment
277 */
278 #if !defined(MODULE) && (ALLOW_DMA != 0)
279 static int g_cs89x0_dma;
280
281 static int __init dma_fn(char *str)
282 {
283 g_cs89x0_dma = simple_strtol(str,NULL,0);
284 return 1;
285 }
286
287 __setup("cs89x0_dma=", dma_fn);
288 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
289
290 #ifndef MODULE
291 static int g_cs89x0_media__force;
292
293 static int __init media_fn(char *str)
294 {
295 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
296 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
297 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
298 return 1;
299 }
300
301 __setup("cs89x0_media=", media_fn);
302
303
304 /* Check for a network adaptor of this type, and return '0' iff one exists.
305 If dev->base_addr == 0, probe all likely locations.
306 If dev->base_addr == 1, always return failure.
307 If dev->base_addr == 2, allocate space for the device and return success
308 (detachable devices only).
309 Return 0 on success.
310 */
311
312 struct net_device * __init cs89x0_probe(int unit)
313 {
314 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
315 unsigned *port;
316 int err = 0;
317 int irq;
318 int io;
319
320 if (!dev)
321 return ERR_PTR(-ENODEV);
322
323 sprintf(dev->name, "eth%d", unit);
324 netdev_boot_setup_check(dev);
325 io = dev->base_addr;
326 irq = dev->irq;
327
328 if (net_debug)
329 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
330
331 if (io > 0x1ff) { /* Check a single specified location. */
332 err = cs89x0_probe1(dev, io, 0);
333 } else if (io != 0) { /* Don't probe at all. */
334 err = -ENXIO;
335 } else {
336 for (port = netcard_portlist; *port; port++) {
337 if (cs89x0_probe1(dev, *port, 0) == 0)
338 break;
339 dev->irq = irq;
340 }
341 if (!*port)
342 err = -ENODEV;
343 }
344 if (err)
345 goto out;
346 return dev;
347 out:
348 free_netdev(dev);
349 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
350 return ERR_PTR(err);
351 }
352 #endif
353
354 #if defined(CONFIG_MACH_IXDP2351)
355 static u16
356 readword(unsigned long base_addr, int portno)
357 {
358 return __raw_readw(base_addr + (portno << 1));
359 }
360
361 static void
362 writeword(unsigned long base_addr, int portno, u16 value)
363 {
364 __raw_writew(value, base_addr + (portno << 1));
365 }
366 #elif defined(CONFIG_ARCH_IXDP2X01)
367 static u16
368 readword(unsigned long base_addr, int portno)
369 {
370 return __raw_readl(base_addr + (portno << 1));
371 }
372
373 static void
374 writeword(unsigned long base_addr, int portno, u16 value)
375 {
376 __raw_writel(value, base_addr + (portno << 1));
377 }
378 #elif defined(CONFIG_ARCH_PNX010X)
379 static u16
380 readword(unsigned long base_addr, int portno)
381 {
382 return inw(base_addr + (portno << 1));
383 }
384
385 static void
386 writeword(unsigned long base_addr, int portno, u16 value)
387 {
388 outw(value, base_addr + (portno << 1));
389 }
390 #else
391 static u16
392 readword(unsigned long base_addr, int portno)
393 {
394 return inw(base_addr + portno);
395 }
396
397 static void
398 writeword(unsigned long base_addr, int portno, u16 value)
399 {
400 outw(value, base_addr + portno);
401 }
402 #endif
403
404 static void
405 readwords(unsigned long base_addr, int portno, void *buf, int length)
406 {
407 u8 *buf8 = (u8 *)buf;
408
409 do {
410 u16 tmp16;
411
412 tmp16 = readword(base_addr, portno);
413 *buf8++ = (u8)tmp16;
414 *buf8++ = (u8)(tmp16 >> 8);
415 } while (--length);
416 }
417
418 static void
419 writewords(unsigned long base_addr, int portno, void *buf, int length)
420 {
421 u8 *buf8 = (u8 *)buf;
422
423 do {
424 u16 tmp16;
425
426 tmp16 = *buf8++;
427 tmp16 |= (*buf8++) << 8;
428 writeword(base_addr, portno, tmp16);
429 } while (--length);
430 }
431
432 static u16
433 readreg(struct net_device *dev, u16 regno)
434 {
435 writeword(dev->base_addr, ADD_PORT, regno);
436 return readword(dev->base_addr, DATA_PORT);
437 }
438
439 static void
440 writereg(struct net_device *dev, u16 regno, u16 value)
441 {
442 writeword(dev->base_addr, ADD_PORT, regno);
443 writeword(dev->base_addr, DATA_PORT, value);
444 }
445
446 static int __init
447 wait_eeprom_ready(struct net_device *dev)
448 {
449 int timeout = jiffies;
450 /* check to see if the EEPROM is ready, a timeout is used -
451 just in case EEPROM is ready when SI_BUSY in the
452 PP_SelfST is clear */
453 while(readreg(dev, PP_SelfST) & SI_BUSY)
454 if (jiffies - timeout >= 40)
455 return -1;
456 return 0;
457 }
458
459 static int __init
460 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
461 {
462 int i;
463
464 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
465 for (i = 0; i < len; i++) {
466 if (wait_eeprom_ready(dev) < 0) return -1;
467 /* Now send the EEPROM read command and EEPROM location to read */
468 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
469 if (wait_eeprom_ready(dev) < 0) return -1;
470 buffer[i] = readreg(dev, PP_EEData);
471 if (net_debug > 3) printk("%04x ", buffer[i]);
472 }
473 if (net_debug > 3) printk("\n");
474 return 0;
475 }
476
477 static int __init
478 get_eeprom_cksum(int off, int len, int *buffer)
479 {
480 int i, cksum;
481
482 cksum = 0;
483 for (i = 0; i < len; i++)
484 cksum += buffer[i];
485 cksum &= 0xffff;
486 if (cksum == 0)
487 return 0;
488 return -1;
489 }
490
491 #ifdef CONFIG_NET_POLL_CONTROLLER
492 /*
493 * Polling receive - used by netconsole and other diagnostic tools
494 * to allow network i/o with interrupts disabled.
495 */
496 static void net_poll_controller(struct net_device *dev)
497 {
498 disable_irq(dev->irq);
499 net_interrupt(dev->irq, dev);
500 enable_irq(dev->irq);
501 }
502 #endif
503
504 /* This is the real probe routine. Linux has a history of friendly device
505 probes on the ISA bus. A good device probes avoids doing writes, and
506 verifies that the correct device exists and functions.
507 Return 0 on success.
508 */
509
510 static int __init
511 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
512 {
513 struct net_local *lp = netdev_priv(dev);
514 static unsigned version_printed;
515 int i;
516 int tmp;
517 unsigned rev_type = 0;
518 int eeprom_buff[CHKSUM_LEN];
519 int retval;
520 DECLARE_MAC_BUF(mac);
521
522 /* Initialize the device structure. */
523 if (!modular) {
524 memset(lp, 0, sizeof(*lp));
525 spin_lock_init(&lp->lock);
526 #ifndef MODULE
527 #if ALLOW_DMA
528 if (g_cs89x0_dma) {
529 lp->use_dma = 1;
530 lp->dma = g_cs89x0_dma;
531 lp->dmasize = 16; /* Could make this an option... */
532 }
533 #endif
534 lp->force = g_cs89x0_media__force;
535 #endif
536 }
537
538 #ifdef CONFIG_ARCH_PNX010X
539 initialize_ebi();
540
541 /* Map GPIO registers for the pins connected to the CS8900a. */
542 if (map_cirrus_gpio() < 0)
543 return -ENODEV;
544
545 reset_cirrus();
546
547 /* Map event-router registers. */
548 if (map_event_router() < 0)
549 return -ENODEV;
550
551 enable_cirrus_irq();
552
553 unmap_cirrus_gpio();
554 unmap_event_router();
555
556 dev->base_addr = ioaddr;
557
558 for (i = 0 ; i < 3 ; i++)
559 readreg(dev, 0);
560 #endif
561
562 /* Grab the region so we can find another board if autoIRQ fails. */
563 /* WTF is going on here? */
564 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
565 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
566 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
567 retval = -EBUSY;
568 goto out1;
569 }
570
571 #ifdef CONFIG_SH_HICOSH4
572 /* truely reset the chip */
573 writeword(ioaddr, ADD_PORT, 0x0114);
574 writeword(ioaddr, DATA_PORT, 0x0040);
575 #endif
576
577 /* if they give us an odd I/O address, then do ONE write to
578 the address port, to get it back to address zero, where we
579 expect to find the EISA signature word. An IO with a base of 0x3
580 will skip the test for the ADD_PORT. */
581 if (ioaddr & 1) {
582 if (net_debug > 1)
583 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
584 if ((ioaddr & 2) != 2)
585 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
586 printk(KERN_ERR "%s: bad signature 0x%x\n",
587 dev->name, readword(ioaddr & ~3, ADD_PORT));
588 retval = -ENODEV;
589 goto out2;
590 }
591 }
592
593 ioaddr &= ~3;
594 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
595 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
596 writeword(ioaddr, ADD_PORT, PP_ChipID);
597
598 tmp = readword(ioaddr, DATA_PORT);
599 if (tmp != CHIP_EISA_ID_SIG) {
600 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
601 CHIP_EISA_ID_SIG_STR "\n",
602 dev->name, ioaddr, DATA_PORT, tmp);
603 retval = -ENODEV;
604 goto out2;
605 }
606
607 /* Fill in the 'dev' fields. */
608 dev->base_addr = ioaddr;
609
610 /* get the chip type */
611 rev_type = readreg(dev, PRODUCT_ID_ADD);
612 lp->chip_type = rev_type &~ REVISON_BITS;
613 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
614
615 /* Check the chip type and revision in order to set the correct send command
616 CS8920 revision C and CS8900 revision F can use the faster send. */
617 lp->send_cmd = TX_AFTER_381;
618 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
619 lp->send_cmd = TX_NOW;
620 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
621 lp->send_cmd = TX_NOW;
622
623 if (net_debug && version_printed++ == 0)
624 printk(version);
625
626 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
627 dev->name,
628 lp->chip_type==CS8900?'0':'2',
629 lp->chip_type==CS8920M?"M":"",
630 lp->chip_revision,
631 dev->base_addr);
632
633 reset_chip(dev);
634
635 /* Here we read the current configuration of the chip. If there
636 is no Extended EEPROM then the idea is to not disturb the chip
637 configuration, it should have been correctly setup by automatic
638 EEPROM read on reset. So, if the chip says it read the EEPROM
639 the driver will always do *something* instead of complain that
640 adapter_cnf is 0. */
641
642 #ifdef CONFIG_SH_HICOSH4
643 if (1) {
644 /* For the HiCO.SH4 board, things are different: we don't
645 have EEPROM, but there is some data in flash, so we go
646 get it there directly (MAC). */
647 __u16 *confd;
648 short cnt;
649 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
650 == 0x006c3000) {
651 confd = (__u16*) 0xa0013fc0;
652 } else {
653 confd = (__u16*) 0xa001ffc0;
654 }
655 cnt = (*confd++ & 0x00ff) >> 1;
656 while (--cnt > 0) {
657 __u16 j = *confd++;
658
659 switch (j & 0x0fff) {
660 case PP_IA:
661 for (i = 0; i < ETH_ALEN/2; i++) {
662 dev->dev_addr[i*2] = confd[i] & 0xFF;
663 dev->dev_addr[i*2+1] = confd[i] >> 8;
664 }
665 break;
666 }
667 j = (j >> 12) + 1;
668 confd += j;
669 cnt -= j;
670 }
671 } else
672 #endif
673
674 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
675 (EEPROM_OK|EEPROM_PRESENT)) {
676 /* Load the MAC. */
677 for (i=0; i < ETH_ALEN/2; i++) {
678 unsigned int Addr;
679 Addr = readreg(dev, PP_IA+i*2);
680 dev->dev_addr[i*2] = Addr & 0xFF;
681 dev->dev_addr[i*2+1] = Addr >> 8;
682 }
683
684 /* Load the Adapter Configuration.
685 Note: Barring any more specific information from some
686 other source (ie EEPROM+Schematics), we would not know
687 how to operate a 10Base2 interface on the AUI port.
688 However, since we do read the status of HCB1 and use
689 settings that always result in calls to control_dc_dc(dev,0)
690 a BNC interface should work if the enable pin
691 (dc/dc converter) is on HCB1. It will be called AUI
692 however. */
693
694 lp->adapter_cnf = 0;
695 i = readreg(dev, PP_LineCTL);
696 /* Preserve the setting of the HCB1 pin. */
697 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
698 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
699 /* Save the sqelch bit */
700 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
701 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
702 /* Check if the card is in 10Base-t only mode */
703 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
704 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
705 /* Check if the card is in AUI only mode */
706 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
707 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
708 /* Check if the card is in Auto mode. */
709 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
710 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
711 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
712
713 if (net_debug > 1)
714 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
715 dev->name, i, lp->adapter_cnf);
716
717 /* IRQ. Other chips already probe, see below. */
718 if (lp->chip_type == CS8900)
719 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
720
721 printk( "[Cirrus EEPROM] ");
722 }
723
724 printk("\n");
725
726 /* First check to see if an EEPROM is attached. */
727 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
728 if (1) {
729 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
730 } else
731 #endif
732 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
733 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
734 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
735 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
736 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
737 /* Check if the chip was able to read its own configuration starting
738 at 0 in the EEPROM*/
739 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
740 (EEPROM_OK|EEPROM_PRESENT))
741 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
742
743 } else {
744 /* This reads an extended EEPROM that is not documented
745 in the CS8900 datasheet. */
746
747 /* get transmission control word but keep the autonegotiation bits */
748 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
749 /* Store adapter configuration */
750 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
751 /* Store ISA configuration */
752 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
753 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
754
755 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
756 /* store the initial memory base address */
757 for (i = 0; i < ETH_ALEN/2; i++) {
758 dev->dev_addr[i*2] = eeprom_buff[i];
759 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
760 }
761 if (net_debug > 1)
762 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
763 dev->name, lp->adapter_cnf);
764 }
765
766 /* allow them to force multiple transceivers. If they force multiple, autosense */
767 {
768 int count = 0;
769 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
770 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
771 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
772 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
773 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
774 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
775 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
776 }
777
778 if (net_debug > 1)
779 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
780 dev->name, lp->force, lp->adapter_cnf);
781
782 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
783
784 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
785
786 /* FIXME: we don't set the Ethernet address on the command line. Use
787 ifconfig IFACE hw ether AABBCCDDEEFF */
788
789 printk(KERN_INFO "cs89x0 media %s%s%s",
790 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
791 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
792 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
793
794 lp->irq_map = 0xffff;
795
796 /* If this is a CS8900 then no pnp soft */
797 if (lp->chip_type != CS8900 &&
798 /* Check if the ISA IRQ has been set */
799 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
800 (i != 0 && i < CS8920_NO_INTS))) {
801 if (!dev->irq)
802 dev->irq = i;
803 } else {
804 i = lp->isa_config & INT_NO_MASK;
805 if (lp->chip_type == CS8900) {
806 #ifdef CONFIG_CS89x0_NONISA_IRQ
807 i = cs8900_irq_map[0];
808 #else
809 /* Translate the IRQ using the IRQ mapping table. */
810 if (i >= ARRAY_SIZE(cs8900_irq_map))
811 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
812 else
813 i = cs8900_irq_map[i];
814
815 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
816 } else {
817 int irq_map_buff[IRQ_MAP_LEN/2];
818
819 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
820 IRQ_MAP_LEN/2,
821 irq_map_buff) >= 0) {
822 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
823 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
824 }
825 #endif
826 }
827 if (!dev->irq)
828 dev->irq = i;
829 }
830
831 printk(" IRQ %d", dev->irq);
832
833 #if ALLOW_DMA
834 if (lp->use_dma) {
835 get_dma_channel(dev);
836 printk(", DMA %d", dev->dma);
837 }
838 else
839 #endif
840 {
841 printk(", programmed I/O");
842 }
843
844 /* print the ethernet address. */
845 printk(", MAC %s", print_mac(mac, dev->dev_addr));
846
847 dev->open = net_open;
848 dev->stop = net_close;
849 dev->tx_timeout = net_timeout;
850 dev->watchdog_timeo = HZ;
851 dev->hard_start_xmit = net_send_packet;
852 dev->get_stats = net_get_stats;
853 dev->set_multicast_list = set_multicast_list;
854 dev->set_mac_address = set_mac_address;
855 #ifdef CONFIG_NET_POLL_CONTROLLER
856 dev->poll_controller = net_poll_controller;
857 #endif
858
859 printk("\n");
860 if (net_debug)
861 printk("cs89x0_probe1() successful\n");
862
863 retval = register_netdev(dev);
864 if (retval)
865 goto out3;
866 return 0;
867 out3:
868 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
869 out2:
870 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
871 out1:
872 return retval;
873 }
874
875
876 /*********************************
877 * This page contains DMA routines
878 **********************************/
879
880 #if ALLOW_DMA
881
882 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
883
884 static void
885 get_dma_channel(struct net_device *dev)
886 {
887 struct net_local *lp = netdev_priv(dev);
888
889 if (lp->dma) {
890 dev->dma = lp->dma;
891 lp->isa_config |= ISA_RxDMA;
892 } else {
893 if ((lp->isa_config & ANY_ISA_DMA) == 0)
894 return;
895 dev->dma = lp->isa_config & DMA_NO_MASK;
896 if (lp->chip_type == CS8900)
897 dev->dma += 5;
898 if (dev->dma < 5 || dev->dma > 7) {
899 lp->isa_config &= ~ANY_ISA_DMA;
900 return;
901 }
902 }
903 return;
904 }
905
906 static void
907 write_dma(struct net_device *dev, int chip_type, int dma)
908 {
909 struct net_local *lp = netdev_priv(dev);
910 if ((lp->isa_config & ANY_ISA_DMA) == 0)
911 return;
912 if (chip_type == CS8900) {
913 writereg(dev, PP_CS8900_ISADMA, dma-5);
914 } else {
915 writereg(dev, PP_CS8920_ISADMA, dma);
916 }
917 }
918
919 static void
920 set_dma_cfg(struct net_device *dev)
921 {
922 struct net_local *lp = netdev_priv(dev);
923
924 if (lp->use_dma) {
925 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
926 if (net_debug > 3)
927 printk("set_dma_cfg(): no DMA\n");
928 return;
929 }
930 if (lp->isa_config & ISA_RxDMA) {
931 lp->curr_rx_cfg |= RX_DMA_ONLY;
932 if (net_debug > 3)
933 printk("set_dma_cfg(): RX_DMA_ONLY\n");
934 } else {
935 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
936 if (net_debug > 3)
937 printk("set_dma_cfg(): AUTO_RX_DMA\n");
938 }
939 }
940 }
941
942 static int
943 dma_bufcfg(struct net_device *dev)
944 {
945 struct net_local *lp = netdev_priv(dev);
946 if (lp->use_dma)
947 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
948 else
949 return 0;
950 }
951
952 static int
953 dma_busctl(struct net_device *dev)
954 {
955 int retval = 0;
956 struct net_local *lp = netdev_priv(dev);
957 if (lp->use_dma) {
958 if (lp->isa_config & ANY_ISA_DMA)
959 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
960 if (lp->isa_config & DMA_BURST)
961 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
962 if (lp->dmasize == 64)
963 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
964 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
965 }
966 return retval;
967 }
968
969 static void
970 dma_rx(struct net_device *dev)
971 {
972 struct net_local *lp = netdev_priv(dev);
973 struct sk_buff *skb;
974 int status, length;
975 unsigned char *bp = lp->rx_dma_ptr;
976
977 status = bp[0] + (bp[1]<<8);
978 length = bp[2] + (bp[3]<<8);
979 bp += 4;
980 if (net_debug > 5) {
981 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
982 dev->name, (unsigned long)bp, status, length);
983 }
984 if ((status & RX_OK) == 0) {
985 count_rx_errors(status, lp);
986 goto skip_this_frame;
987 }
988
989 /* Malloc up new buffer. */
990 skb = dev_alloc_skb(length + 2);
991 if (skb == NULL) {
992 if (net_debug) /* I don't think we want to do this to a stressed system */
993 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
994 lp->stats.rx_dropped++;
995
996 /* AKPM: advance bp to the next frame */
997 skip_this_frame:
998 bp += (length + 3) & ~3;
999 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1000 lp->rx_dma_ptr = bp;
1001 return;
1002 }
1003 skb_reserve(skb, 2); /* longword align L3 header */
1004
1005 if (bp + length > lp->end_dma_buff) {
1006 int semi_cnt = lp->end_dma_buff - bp;
1007 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
1008 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
1009 length - semi_cnt);
1010 } else {
1011 memcpy(skb_put(skb,length), bp, length);
1012 }
1013 bp += (length + 3) & ~3;
1014 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1015 lp->rx_dma_ptr = bp;
1016
1017 if (net_debug > 3) {
1018 printk( "%s: received %d byte DMA packet of type %x\n",
1019 dev->name, length,
1020 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1021 }
1022 skb->protocol=eth_type_trans(skb,dev);
1023 netif_rx(skb);
1024 dev->last_rx = jiffies;
1025 lp->stats.rx_packets++;
1026 lp->stats.rx_bytes += length;
1027 }
1028
1029 #endif /* ALLOW_DMA */
1030
1031 void __init reset_chip(struct net_device *dev)
1032 {
1033 #if !defined(CONFIG_MACH_MX31ADS)
1034 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1035 struct net_local *lp = netdev_priv(dev);
1036 int ioaddr = dev->base_addr;
1037 #endif
1038 int reset_start_time;
1039
1040 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1041
1042 /* wait 30 ms */
1043 msleep(30);
1044
1045 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1046 if (lp->chip_type != CS8900) {
1047 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1048 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1049 outb(dev->irq, ioaddr + DATA_PORT);
1050 outb(0, ioaddr + DATA_PORT + 1);
1051
1052 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1053 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1054 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1055 }
1056 #endif /* IXDP2x01 */
1057
1058 /* Wait until the chip is reset */
1059 reset_start_time = jiffies;
1060 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1061 ;
1062 #endif /* !CONFIG_MACH_MX31ADS */
1063 }
1064
1065
1066 static void
1067 control_dc_dc(struct net_device *dev, int on_not_off)
1068 {
1069 struct net_local *lp = netdev_priv(dev);
1070 unsigned int selfcontrol;
1071 int timenow = jiffies;
1072 /* control the DC to DC convertor in the SelfControl register.
1073 Note: This is hooked up to a general purpose pin, might not
1074 always be a DC to DC convertor. */
1075
1076 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1077 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1078 selfcontrol |= HCB1;
1079 else
1080 selfcontrol &= ~HCB1;
1081 writereg(dev, PP_SelfCTL, selfcontrol);
1082
1083 /* Wait for the DC/DC converter to power up - 500ms */
1084 while (jiffies - timenow < HZ)
1085 ;
1086 }
1087
1088 #define DETECTED_NONE 0
1089 #define DETECTED_RJ45H 1
1090 #define DETECTED_RJ45F 2
1091 #define DETECTED_AUI 3
1092 #define DETECTED_BNC 4
1093
1094 static int
1095 detect_tp(struct net_device *dev)
1096 {
1097 struct net_local *lp = netdev_priv(dev);
1098 int timenow = jiffies;
1099 int fdx;
1100
1101 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1102
1103 /* If connected to another full duplex capable 10-Base-T card the link pulses
1104 seem to be lost when the auto detect bit in the LineCTL is set.
1105 To overcome this the auto detect bit will be cleared whilst testing the
1106 10-Base-T interface. This would not be necessary for the sparrow chip but
1107 is simpler to do it anyway. */
1108 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1109 control_dc_dc(dev, 0);
1110
1111 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1112 for (timenow = jiffies; jiffies - timenow < 15; )
1113 ;
1114 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1115 return DETECTED_NONE;
1116
1117 if (lp->chip_type == CS8900) {
1118 switch (lp->force & 0xf0) {
1119 #if 0
1120 case FORCE_AUTO:
1121 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1122 return DETECTED_NONE;
1123 #endif
1124 /* CS8900 doesn't support AUTO, change to HALF*/
1125 case FORCE_AUTO:
1126 lp->force &= ~FORCE_AUTO;
1127 lp->force |= FORCE_HALF;
1128 break;
1129 case FORCE_HALF:
1130 break;
1131 case FORCE_FULL:
1132 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1133 break;
1134 }
1135 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1136 } else {
1137 switch (lp->force & 0xf0) {
1138 case FORCE_AUTO:
1139 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1140 break;
1141 case FORCE_HALF:
1142 lp->auto_neg_cnf = 0;
1143 break;
1144 case FORCE_FULL:
1145 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1146 break;
1147 }
1148
1149 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1150
1151 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1152 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1153 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1154 if (jiffies - timenow > 4000) {
1155 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1156 break;
1157 }
1158 }
1159 }
1160 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1161 }
1162 if (fdx)
1163 return DETECTED_RJ45F;
1164 else
1165 return DETECTED_RJ45H;
1166 }
1167
1168 /* send a test packet - return true if carrier bits are ok */
1169 static int
1170 send_test_pkt(struct net_device *dev)
1171 {
1172 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1173 0, 46, /* A 46 in network order */
1174 0, 0, /* DSAP=0 & SSAP=0 fields */
1175 0xf3, 0 /* Control (Test Req + P bit set) */ };
1176 long timenow = jiffies;
1177
1178 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1179
1180 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1181 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1182
1183 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1184 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1185
1186 /* Test to see if the chip has allocated memory for the packet */
1187 while (jiffies - timenow < 5)
1188 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1189 break;
1190 if (jiffies - timenow >= 5)
1191 return 0; /* this shouldn't happen */
1192
1193 /* Write the contents of the packet */
1194 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1195
1196 if (net_debug > 1) printk("Sending test packet ");
1197 /* wait a couple of jiffies for packet to be received */
1198 for (timenow = jiffies; jiffies - timenow < 3; )
1199 ;
1200 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1201 if (net_debug > 1) printk("succeeded\n");
1202 return 1;
1203 }
1204 if (net_debug > 1) printk("failed\n");
1205 return 0;
1206 }
1207
1208
1209 static int
1210 detect_aui(struct net_device *dev)
1211 {
1212 struct net_local *lp = netdev_priv(dev);
1213
1214 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1215 control_dc_dc(dev, 0);
1216
1217 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1218
1219 if (send_test_pkt(dev))
1220 return DETECTED_AUI;
1221 else
1222 return DETECTED_NONE;
1223 }
1224
1225 static int
1226 detect_bnc(struct net_device *dev)
1227 {
1228 struct net_local *lp = netdev_priv(dev);
1229
1230 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1231 control_dc_dc(dev, 1);
1232
1233 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1234
1235 if (send_test_pkt(dev))
1236 return DETECTED_BNC;
1237 else
1238 return DETECTED_NONE;
1239 }
1240
1241
1242 static void
1243 write_irq(struct net_device *dev, int chip_type, int irq)
1244 {
1245 int i;
1246
1247 if (chip_type == CS8900) {
1248 /* Search the mapping table for the corresponding IRQ pin. */
1249 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
1250 if (cs8900_irq_map[i] == irq)
1251 break;
1252 /* Not found */
1253 if (i == ARRAY_SIZE(cs8900_irq_map))
1254 i = 3;
1255 writereg(dev, PP_CS8900_ISAINT, i);
1256 } else {
1257 writereg(dev, PP_CS8920_ISAINT, irq);
1258 }
1259 }
1260
1261 /* Open/initialize the board. This is called (in the current kernel)
1262 sometime after booting when the 'ifconfig' program is run.
1263
1264 This routine should set everything up anew at each open, even
1265 registers that "should" only need to be set once at boot, so that
1266 there is non-reboot way to recover if something goes wrong.
1267 */
1268
1269 /* AKPM: do we need to do any locking here? */
1270
1271 static int
1272 net_open(struct net_device *dev)
1273 {
1274 struct net_local *lp = netdev_priv(dev);
1275 int result = 0;
1276 int i;
1277 int ret;
1278
1279 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1280 if (dev->irq < 2) {
1281 /* Allow interrupts to be generated by the chip */
1282 /* Cirrus' release had this: */
1283 #if 0
1284 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1285 #endif
1286 /* And 2.3.47 had this: */
1287 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1288
1289 for (i = 2; i < CS8920_NO_INTS; i++) {
1290 if ((1 << i) & lp->irq_map) {
1291 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1292 dev->irq = i;
1293 write_irq(dev, lp->chip_type, i);
1294 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1295 break;
1296 }
1297 }
1298 }
1299
1300 if (i >= CS8920_NO_INTS) {
1301 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1302 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1303 ret = -EAGAIN;
1304 goto bad_out;
1305 }
1306 }
1307 else
1308 #endif
1309 {
1310 #ifndef CONFIG_CS89x0_NONISA_IRQ
1311 if (((1 << dev->irq) & lp->irq_map) == 0) {
1312 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1313 dev->name, dev->irq, lp->irq_map);
1314 ret = -EAGAIN;
1315 goto bad_out;
1316 }
1317 #endif
1318 /* FIXME: Cirrus' release had this: */
1319 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1320 /* And 2.3.47 had this: */
1321 #if 0
1322 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1323 #endif
1324 write_irq(dev, lp->chip_type, dev->irq);
1325 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1326 if (ret) {
1327 if (net_debug)
1328 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1329 goto bad_out;
1330 }
1331 }
1332
1333 #if ALLOW_DMA
1334 if (lp->use_dma) {
1335 if (lp->isa_config & ANY_ISA_DMA) {
1336 unsigned long flags;
1337 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1338 get_order(lp->dmasize * 1024));
1339
1340 if (!lp->dma_buff) {
1341 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1342 goto release_irq;
1343 }
1344 if (net_debug > 1) {
1345 printk( "%s: dma %lx %lx\n",
1346 dev->name,
1347 (unsigned long)lp->dma_buff,
1348 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1349 }
1350 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1351 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1352 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1353 goto release_irq;
1354 }
1355 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1356 if (request_dma(dev->dma, dev->name)) {
1357 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1358 goto release_irq;
1359 }
1360 write_dma(dev, lp->chip_type, dev->dma);
1361 lp->rx_dma_ptr = lp->dma_buff;
1362 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1363 spin_lock_irqsave(&lp->lock, flags);
1364 disable_dma(dev->dma);
1365 clear_dma_ff(dev->dma);
1366 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1367 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1368 set_dma_count(dev->dma, lp->dmasize*1024);
1369 enable_dma(dev->dma);
1370 spin_unlock_irqrestore(&lp->lock, flags);
1371 }
1372 }
1373 #endif /* ALLOW_DMA */
1374
1375 /* set the Ethernet address */
1376 for (i=0; i < ETH_ALEN/2; i++)
1377 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1378
1379 /* while we're testing the interface, leave interrupts disabled */
1380 writereg(dev, PP_BusCTL, MEMORY_ON);
1381
1382 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1383 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1384 lp->linectl = LOW_RX_SQUELCH;
1385 else
1386 lp->linectl = 0;
1387
1388 /* check to make sure that they have the "right" hardware available */
1389 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1390 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1391 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1392 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1393 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1394 }
1395 #ifdef CONFIG_ARCH_PNX010X
1396 result = A_CNF_10B_T;
1397 #endif
1398 if (!result) {
1399 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1400 release_dma:
1401 #if ALLOW_DMA
1402 free_dma(dev->dma);
1403 release_irq:
1404 release_dma_buff(lp);
1405 #endif
1406 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1407 free_irq(dev->irq, dev);
1408 ret = -EAGAIN;
1409 goto bad_out;
1410 }
1411
1412 /* set the hardware to the configured choice */
1413 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1414 case A_CNF_MEDIA_10B_T:
1415 result = detect_tp(dev);
1416 if (result==DETECTED_NONE) {
1417 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1418 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1419 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1420 }
1421 break;
1422 case A_CNF_MEDIA_AUI:
1423 result = detect_aui(dev);
1424 if (result==DETECTED_NONE) {
1425 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1426 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1427 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1428 }
1429 break;
1430 case A_CNF_MEDIA_10B_2:
1431 result = detect_bnc(dev);
1432 if (result==DETECTED_NONE) {
1433 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1434 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1435 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1436 }
1437 break;
1438 case A_CNF_MEDIA_AUTO:
1439 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1440 if (lp->adapter_cnf & A_CNF_10B_T)
1441 if ((result = detect_tp(dev)) != DETECTED_NONE)
1442 break;
1443 if (lp->adapter_cnf & A_CNF_AUI)
1444 if ((result = detect_aui(dev)) != DETECTED_NONE)
1445 break;
1446 if (lp->adapter_cnf & A_CNF_10B_2)
1447 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1448 break;
1449 printk(KERN_ERR "%s: no media detected\n", dev->name);
1450 goto release_dma;
1451 }
1452 switch(result) {
1453 case DETECTED_NONE:
1454 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1455 goto release_dma;
1456 case DETECTED_RJ45H:
1457 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1458 break;
1459 case DETECTED_RJ45F:
1460 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1461 break;
1462 case DETECTED_AUI:
1463 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1464 break;
1465 case DETECTED_BNC:
1466 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1467 break;
1468 }
1469
1470 /* Turn on both receive and transmit operations */
1471 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1472
1473 /* Receive only error free packets addressed to this card */
1474 lp->rx_mode = 0;
1475 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1476
1477 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1478
1479 if (lp->isa_config & STREAM_TRANSFER)
1480 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1481 #if ALLOW_DMA
1482 set_dma_cfg(dev);
1483 #endif
1484 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1485
1486 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1487 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1488
1489 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1490 #if ALLOW_DMA
1491 dma_bufcfg(dev) |
1492 #endif
1493 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1494
1495 /* now that we've got our act together, enable everything */
1496 writereg(dev, PP_BusCTL, ENABLE_IRQ
1497 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1498 #if ALLOW_DMA
1499 | dma_busctl(dev)
1500 #endif
1501 );
1502 netif_start_queue(dev);
1503 if (net_debug > 1)
1504 printk("cs89x0: net_open() succeeded\n");
1505 return 0;
1506 bad_out:
1507 return ret;
1508 }
1509
1510 static void net_timeout(struct net_device *dev)
1511 {
1512 /* If we get here, some higher level has decided we are broken.
1513 There should really be a "kick me" function call instead. */
1514 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1515 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1516 /* Try to restart the adaptor. */
1517 netif_wake_queue(dev);
1518 }
1519
1520 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1521 {
1522 struct net_local *lp = netdev_priv(dev);
1523
1524 if (net_debug > 3) {
1525 printk("%s: sent %d byte packet of type %x\n",
1526 dev->name, skb->len,
1527 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1528 }
1529
1530 /* keep the upload from being interrupted, since we
1531 ask the chip to start transmitting before the
1532 whole packet has been completely uploaded. */
1533
1534 spin_lock_irq(&lp->lock);
1535 netif_stop_queue(dev);
1536
1537 /* initiate a transmit sequence */
1538 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1539 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1540
1541 /* Test to see if the chip has allocated memory for the packet */
1542 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1543 /*
1544 * Gasp! It hasn't. But that shouldn't happen since
1545 * we're waiting for TxOk, so return 1 and requeue this packet.
1546 */
1547
1548 spin_unlock_irq(&lp->lock);
1549 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1550 return 1;
1551 }
1552 /* Write the contents of the packet */
1553 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1554 spin_unlock_irq(&lp->lock);
1555 lp->stats.tx_bytes += skb->len;
1556 dev->trans_start = jiffies;
1557 dev_kfree_skb (skb);
1558
1559 /*
1560 * We DO NOT call netif_wake_queue() here.
1561 * We also DO NOT call netif_start_queue().
1562 *
1563 * Either of these would cause another bottom half run through
1564 * net_send_packet() before this packet has fully gone out. That causes
1565 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1566 * a dog. We just return and wait for the Tx completion interrupt handler
1567 * to restart the netdevice layer
1568 */
1569
1570 return 0;
1571 }
1572
1573 /* The typical workload of the driver:
1574 Handle the network interface interrupts. */
1575
1576 static irqreturn_t net_interrupt(int irq, void *dev_id)
1577 {
1578 struct net_device *dev = dev_id;
1579 struct net_local *lp;
1580 int ioaddr, status;
1581 int handled = 0;
1582
1583 ioaddr = dev->base_addr;
1584 lp = netdev_priv(dev);
1585
1586 /* we MUST read all the events out of the ISQ, otherwise we'll never
1587 get interrupted again. As a consequence, we can't have any limit
1588 on the number of times we loop in the interrupt handler. The
1589 hardware guarantees that eventually we'll run out of events. Of
1590 course, if you're on a slow machine, and packets are arriving
1591 faster than you can read them off, you're screwed. Hasta la
1592 vista, baby! */
1593 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1594 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1595 handled = 1;
1596 switch(status & ISQ_EVENT_MASK) {
1597 case ISQ_RECEIVER_EVENT:
1598 /* Got a packet(s). */
1599 net_rx(dev);
1600 break;
1601 case ISQ_TRANSMITTER_EVENT:
1602 lp->stats.tx_packets++;
1603 netif_wake_queue(dev); /* Inform upper layers. */
1604 if ((status & ( TX_OK |
1605 TX_LOST_CRS |
1606 TX_SQE_ERROR |
1607 TX_LATE_COL |
1608 TX_16_COL)) != TX_OK) {
1609 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1610 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1611 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1612 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1613 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1614 }
1615 break;
1616 case ISQ_BUFFER_EVENT:
1617 if (status & READY_FOR_TX) {
1618 /* we tried to transmit a packet earlier,
1619 but inexplicably ran out of buffers.
1620 That shouldn't happen since we only ever
1621 load one packet. Shrug. Do the right
1622 thing anyway. */
1623 netif_wake_queue(dev); /* Inform upper layers. */
1624 }
1625 if (status & TX_UNDERRUN) {
1626 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1627 lp->send_underrun++;
1628 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1629 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1630 /* transmit cycle is done, although
1631 frame wasn't transmitted - this
1632 avoids having to wait for the upper
1633 layers to timeout on us, in the
1634 event of a tx underrun */
1635 netif_wake_queue(dev); /* Inform upper layers. */
1636 }
1637 #if ALLOW_DMA
1638 if (lp->use_dma && (status & RX_DMA)) {
1639 int count = readreg(dev, PP_DmaFrameCnt);
1640 while(count) {
1641 if (net_debug > 5)
1642 printk("%s: receiving %d DMA frames\n", dev->name, count);
1643 if (net_debug > 2 && count >1)
1644 printk("%s: receiving %d DMA frames\n", dev->name, count);
1645 dma_rx(dev);
1646 if (--count == 0)
1647 count = readreg(dev, PP_DmaFrameCnt);
1648 if (net_debug > 2 && count > 0)
1649 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1650 }
1651 }
1652 #endif
1653 break;
1654 case ISQ_RX_MISS_EVENT:
1655 lp->stats.rx_missed_errors += (status >>6);
1656 break;
1657 case ISQ_TX_COL_EVENT:
1658 lp->stats.collisions += (status >>6);
1659 break;
1660 }
1661 }
1662 return IRQ_RETVAL(handled);
1663 }
1664
1665 static void
1666 count_rx_errors(int status, struct net_local *lp)
1667 {
1668 lp->stats.rx_errors++;
1669 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1670 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1671 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1672 /* per str 172 */
1673 lp->stats.rx_crc_errors++;
1674 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1675 return;
1676 }
1677
1678 /* We have a good packet(s), get it/them out of the buffers. */
1679 static void
1680 net_rx(struct net_device *dev)
1681 {
1682 struct net_local *lp = netdev_priv(dev);
1683 struct sk_buff *skb;
1684 int status, length;
1685
1686 int ioaddr = dev->base_addr;
1687 status = readword(ioaddr, RX_FRAME_PORT);
1688 length = readword(ioaddr, RX_FRAME_PORT);
1689
1690 if ((status & RX_OK) == 0) {
1691 count_rx_errors(status, lp);
1692 return;
1693 }
1694
1695 /* Malloc up new buffer. */
1696 skb = dev_alloc_skb(length + 2);
1697 if (skb == NULL) {
1698 #if 0 /* Again, this seems a cruel thing to do */
1699 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1700 #endif
1701 lp->stats.rx_dropped++;
1702 return;
1703 }
1704 skb_reserve(skb, 2); /* longword align L3 header */
1705
1706 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1707 if (length & 1)
1708 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1709
1710 if (net_debug > 3) {
1711 printk( "%s: received %d byte packet of type %x\n",
1712 dev->name, length,
1713 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1714 }
1715
1716 skb->protocol=eth_type_trans(skb,dev);
1717 netif_rx(skb);
1718 dev->last_rx = jiffies;
1719 lp->stats.rx_packets++;
1720 lp->stats.rx_bytes += length;
1721 }
1722
1723 #if ALLOW_DMA
1724 static void release_dma_buff(struct net_local *lp)
1725 {
1726 if (lp->dma_buff) {
1727 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1728 lp->dma_buff = NULL;
1729 }
1730 }
1731 #endif
1732
1733 /* The inverse routine to net_open(). */
1734 static int
1735 net_close(struct net_device *dev)
1736 {
1737 #if ALLOW_DMA
1738 struct net_local *lp = netdev_priv(dev);
1739 #endif
1740
1741 netif_stop_queue(dev);
1742
1743 writereg(dev, PP_RxCFG, 0);
1744 writereg(dev, PP_TxCFG, 0);
1745 writereg(dev, PP_BufCFG, 0);
1746 writereg(dev, PP_BusCTL, 0);
1747
1748 free_irq(dev->irq, dev);
1749
1750 #if ALLOW_DMA
1751 if (lp->use_dma && lp->dma) {
1752 free_dma(dev->dma);
1753 release_dma_buff(lp);
1754 }
1755 #endif
1756
1757 /* Update the statistics here. */
1758 return 0;
1759 }
1760
1761 /* Get the current statistics. This may be called with the card open or
1762 closed. */
1763 static struct net_device_stats *
1764 net_get_stats(struct net_device *dev)
1765 {
1766 struct net_local *lp = netdev_priv(dev);
1767 unsigned long flags;
1768
1769 spin_lock_irqsave(&lp->lock, flags);
1770 /* Update the statistics from the device registers. */
1771 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1772 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1773 spin_unlock_irqrestore(&lp->lock, flags);
1774
1775 return &lp->stats;
1776 }
1777
1778 static void set_multicast_list(struct net_device *dev)
1779 {
1780 struct net_local *lp = netdev_priv(dev);
1781 unsigned long flags;
1782
1783 spin_lock_irqsave(&lp->lock, flags);
1784 if(dev->flags&IFF_PROMISC)
1785 {
1786 lp->rx_mode = RX_ALL_ACCEPT;
1787 }
1788 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1789 {
1790 /* The multicast-accept list is initialized to accept-all, and we
1791 rely on higher-level filtering for now. */
1792 lp->rx_mode = RX_MULTCAST_ACCEPT;
1793 }
1794 else
1795 lp->rx_mode = 0;
1796
1797 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1798
1799 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1800 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1801 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1802 spin_unlock_irqrestore(&lp->lock, flags);
1803 }
1804
1805
1806 static int set_mac_address(struct net_device *dev, void *p)
1807 {
1808 int i;
1809 struct sockaddr *addr = p;
1810
1811 if (netif_running(dev))
1812 return -EBUSY;
1813
1814 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1815
1816 if (net_debug) {
1817 DECLARE_MAC_BUF(mac);
1818 printk("%s: Setting MAC address to %s.\n",
1819 dev->name, print_mac(mac, 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 */
Ubuntu Eoan Linux kernel mirror