]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/net/cs89x0.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
tg3: Report driver version to firmware
[net-next-2.6.git] / drivers / net / cs89x0.c
CommitLineData
1da177e4
LT		 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
6aa20a22 18 : Changes for Linux 2.0 compatibility.
1da177e4
LT		 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
6aa20a22 24 : that the module is in use and wouldn't eject the
1da177e4
LT		 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
6aa20a22 34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
1da177e4
LT		 35 : email: ethernet@crystal.cirrus.com
36
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
38
e1f8e874 39 Andrew Morton : Kernel 2.3.48
1da177e4
LT		 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
e1f8e874 51 Andrew Morton : Kernel 2.3.99-pre1
1da177e4
LT		 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
e1f8e874 59 Andrew Morton : Kernel 2.3.99-pre4-1
1da177e4
LT		 60 : MOD_INC/DEC race fix (see
61 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
62
e1f8e874 63 Andrew Morton : Kernel 2.4.0-test7-pre2
1da177e4
LT		 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
032874e4
LB		 89 Dmitry Pervushin : dpervushin@ru.mvista.com
90 : PNX010X platform support
91
9c878967
DS		 92 Deepak Saxena : dsaxena@plexity.net
93 : Intel IXDP2351 platform support
94
5aeebe01
LB		 95 Dmitry Pervushin : dpervushin@ru.mvista.com
96 : PNX010X platform support
97
1da177e4
LT		 98*/
99
100/* Always include 'config.h' first in case the user wants to turn on
101 or override something. */
1da177e4
LT		 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 */
91e1c463 110#ifndef CONFIG_ISA_DMA_API
1da177e4
LT		 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>
1da177e4
LT		 141#include <linux/spinlock.h>
142#include <linux/string.h>
143#include <linux/init.h>
144#include <linux/bitops.h>
145#include <linux/delay.h>
5a0e3ad6 146#include <linux/gfp.h>
1da177e4
LT		 147
148#include <asm/system.h>
149#include <asm/io.h>
7625d483 150#include <asm/irq.h>
1da177e4
LT		 151#if ALLOW_DMA
152#include <asm/dma.h>
153#endif
154
155#include "cs89x0.h"
156
157static char version[] __initdata =
e1f8e874 158"cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n";
1da177e4
LT		 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
6aa20a22
JG		 165 the page window before probing
166 Addr & 3 = Reset the page window and probe
1da177e4
LT		 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. */
6aa20a22 170/* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
1da177e4
LT		 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. */
635f0258 173#if defined(CONFIG_SH_HICOSH4)
a80763c9 174static unsigned int netcard_portlist[] __used __initdata =
1da177e4
LT		 175 { 0x0300, 0};
176static unsigned int cs8900_irq_map[] = {1,0,0,0};
9c878967 177#elif defined(CONFIG_MACH_IXDP2351)
a80763c9 178static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
9c878967 179static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
1da177e4 180#elif defined(CONFIG_ARCH_IXDP2X01)
a80763c9 181static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
1da177e4 182static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
277cb103 183#elif defined(CONFIG_ARCH_PNX010X)
a09e64fb 184#include <mach/gpio.h>
0dd3c781 185#define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
186#define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
a80763c9 187static unsigned int netcard_portlist[] __used __initdata = {CIRRUS_DEFAULT_BASE, 0};
0dd3c781 188static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
0ac4ed9d
GC		 189#elif defined(CONFIG_MACH_MX31ADS)
190#include <mach/board-mx31ads.h>
191static unsigned int netcard_portlist[] __used __initdata = {
192 PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
193};
194static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
1da177e4 195#else
a80763c9 196static unsigned int netcard_portlist[] __used __initdata =
1da177e4
LT		 197 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
198static unsigned int cs8900_irq_map[] = {10,11,12,5};
199#endif
200
201#if DEBUGGING
202static unsigned int net_debug = DEBUGGING;
203#else
204#define net_debug 0 /* gcc will remove all the debug code for us */
205#endif
206
207/* The number of low I/O ports used by the ethercard. */
208#define NETCARD_IO_EXTENT 16
209
210/* we allow the user to override various values normally set in the EEPROM */
211#define FORCE_RJ45 0x0001 /* pick one of these three */
212#define FORCE_AUI 0x0002
213#define FORCE_BNC 0x0004
214
215#define FORCE_AUTO 0x0010 /* pick one of these three */
216#define FORCE_HALF 0x0020
217#define FORCE_FULL 0x0030
218
219/* Information that need to be kept for each board. */
220struct net_local {
1da177e4
LT		 221 int chip_type; /* one of: CS8900, CS8920, CS8920M */
222 char chip_revision; /* revision letter of the chip ('A'...) */
223 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
224 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
225 int adapter_cnf; /* adapter configuration from EEPROM */
226 int isa_config; /* ISA configuration from EEPROM */
227 int irq_map; /* IRQ map from EEPROM */
228 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
229 int curr_rx_cfg; /* a copy of PP_RxCFG */
230 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
231 int send_underrun; /* keep track of how many underruns in a row we get */
232 int force; /* force various values; see FORCE* above. */
233 spinlock_t lock;
234#if ALLOW_DMA
235 int use_dma; /* Flag: we're using dma */
236 int dma; /* DMA channel */
237 int dmasize; /* 16 or 64 */
238 unsigned char *dma_buff; /* points to the beginning of the buffer */
239 unsigned char *end_dma_buff; /* points to the end of the buffer */
240 unsigned char *rx_dma_ptr; /* points to the next packet */
241#endif
242};
243
244/* Index to functions, as function prototypes. */
245
246static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
247static int net_open(struct net_device *dev);
61357325 248static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev);
7d12e780 249static irqreturn_t net_interrupt(int irq, void *dev_id);
1da177e4
LT		 250static void set_multicast_list(struct net_device *dev);
251static void net_timeout(struct net_device *dev);
252static void net_rx(struct net_device *dev);
253static int net_close(struct net_device *dev);
254static struct net_device_stats *net_get_stats(struct net_device *dev);
255static void reset_chip(struct net_device *dev);
256static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
257static int get_eeprom_cksum(int off, int len, int *buffer);
258static int set_mac_address(struct net_device *dev, void *addr);
661a16ce 259static void count_rx_errors(int status, struct net_device *dev);
6f519165
DS		 260#ifdef CONFIG_NET_POLL_CONTROLLER
261static void net_poll_controller(struct net_device *dev);
262#endif
1da177e4
LT		 263#if ALLOW_DMA
264static void get_dma_channel(struct net_device *dev);
265static void release_dma_buff(struct net_local *lp);
266#endif
267
268/* Example routines you must write ;->. */
269#define tx_done(dev) 1
270
271/*
272 * Permit 'cs89x0_dma=N' in the kernel boot environment
273 */
274#if !defined(MODULE) && (ALLOW_DMA != 0)
275static int g_cs89x0_dma;
276
277static int __init dma_fn(char *str)
278{
279 g_cs89x0_dma = simple_strtol(str,NULL,0);
280 return 1;
281}
282
283__setup("cs89x0_dma=", dma_fn);
284#endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
285
286#ifndef MODULE
287static int g_cs89x0_media__force;
288
289static int __init media_fn(char *str)
290{
291 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
292 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
293 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
294 return 1;
295}
296
297__setup("cs89x0_media=", media_fn);
298
6aa20a22 299
1da177e4
LT		 300/* Check for a network adaptor of this type, and return '0' iff one exists.
301 If dev->base_addr == 0, probe all likely locations.
302 If dev->base_addr == 1, always return failure.
303 If dev->base_addr == 2, allocate space for the device and return success
304 (detachable devices only).
305 Return 0 on success.
306 */
307
308struct net_device * __init cs89x0_probe(int unit)
309{
310 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
311 unsigned *port;
312 int err = 0;
313 int irq;
314 int io;
315
316 if (!dev)
317 return ERR_PTR(-ENODEV);
318
319 sprintf(dev->name, "eth%d", unit);
320 netdev_boot_setup_check(dev);
321 io = dev->base_addr;
322 irq = dev->irq;
323
324 if (net_debug)
325 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
326
327 if (io > 0x1ff) { /* Check a single specified location. */
328 err = cs89x0_probe1(dev, io, 0);
329 } else if (io != 0) { /* Don't probe at all. */
330 err = -ENXIO;
331 } else {
332 for (port = netcard_portlist; *port; port++) {
333 if (cs89x0_probe1(dev, *port, 0) == 0)
334 break;
335 dev->irq = irq;
336 }
337 if (!*port)
338 err = -ENODEV;
339 }
340 if (err)
341 goto out;
1da177e4 342 return dev;
1da177e4
LT		 343out:
344 free_netdev(dev);
345 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
346 return ERR_PTR(err);
347}
348#endif
349
9c878967
DS		 350#if defined(CONFIG_MACH_IXDP2351)
351static u16
352readword(unsigned long base_addr, int portno)
353{
354 return __raw_readw(base_addr + (portno << 1));
355}
356
357static void
358writeword(unsigned long base_addr, int portno, u16 value)
359{
360 __raw_writew(value, base_addr + (portno << 1));
361}
362#elif defined(CONFIG_ARCH_IXDP2X01)
a07f0dbe 363static u16
3b68d70d
LB		 364readword(unsigned long base_addr, int portno)
365{
a07f0dbe 366 return __raw_readl(base_addr + (portno << 1));
3b68d70d
LB		 367}
368
369static void
a07f0dbe 370writeword(unsigned long base_addr, int portno, u16 value)
3b68d70d 371{
a07f0dbe 372 __raw_writel(value, base_addr + (portno << 1));
3b68d70d 373}
580d7b8c 374#elif defined(CONFIG_ARCH_PNX010X)
a07f0dbe 375static u16
3b68d70d
LB		 376readword(unsigned long base_addr, int portno)
377{
378 return inw(base_addr + (portno << 1));
379}
380
381static void
a07f0dbe 382writeword(unsigned long base_addr, int portno, u16 value)
3b68d70d
LB		 383{
384 outw(value, base_addr + (portno << 1));
385}
386#else
a07f0dbe 387static u16
0d5affcf 388readword(unsigned long base_addr, int portno)
1da177e4 389{
0d5affcf 390 return inw(base_addr + portno);
1da177e4
LT		 391}
392
393static void
a07f0dbe 394writeword(unsigned long base_addr, int portno, u16 value)
1da177e4 395{
0d5affcf 396 outw(value, base_addr + portno);
1da177e4 397}
3b68d70d 398#endif
1da177e4 399
084f746a
LB		 400static void
401readwords(unsigned long base_addr, int portno, void *buf, int length)
402{
403 u8 *buf8 = (u8 *)buf;
404
405 do {
a07f0dbe 406 u16 tmp16;
084f746a 407
a07f0dbe
LB		 408 tmp16 = readword(base_addr, portno);
409 *buf8++ = (u8)tmp16;
410 *buf8++ = (u8)(tmp16 >> 8);
084f746a
LB		 411 } while (--length);
412}
413
414static void
415writewords(unsigned long base_addr, int portno, void *buf, int length)
416{
417 u8 *buf8 = (u8 *)buf;
418
419 do {
a07f0dbe 420 u16 tmp16;
084f746a 421
a07f0dbe
LB		 422 tmp16 = *buf8++;
423 tmp16 |= (*buf8++) << 8;
424 writeword(base_addr, portno, tmp16);
084f746a
LB		 425 } while (--length);
426}
427
a07f0dbe
LB		 428static u16
429readreg(struct net_device *dev, u16 regno)
1da177e4 430{
3eaa5e7d
LB		 431 writeword(dev->base_addr, ADD_PORT, regno);
432 return readword(dev->base_addr, DATA_PORT);
1da177e4
LT		 433}
434
435static void
a07f0dbe 436writereg(struct net_device *dev, u16 regno, u16 value)
1da177e4 437{
3eaa5e7d
LB		 438 writeword(dev->base_addr, ADD_PORT, regno);
439 writeword(dev->base_addr, DATA_PORT, value);
1da177e4
LT		 440}
441
442static int __init
443wait_eeprom_ready(struct net_device *dev)
444{
445 int timeout = jiffies;
446 /* check to see if the EEPROM is ready, a timeout is used -
447 just in case EEPROM is ready when SI_BUSY in the
448 PP_SelfST is clear */
449 while(readreg(dev, PP_SelfST) & SI_BUSY)
450 if (jiffies - timeout >= 40)
451 return -1;
452 return 0;
453}
454
455static int __init
456get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
457{
458 int i;
459
460 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
461 for (i = 0; i < len; i++) {
462 if (wait_eeprom_ready(dev) < 0) return -1;
463 /* Now send the EEPROM read command and EEPROM location to read */
464 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
465 if (wait_eeprom_ready(dev) < 0) return -1;
466 buffer[i] = readreg(dev, PP_EEData);
467 if (net_debug > 3) printk("%04x ", buffer[i]);
468 }
469 if (net_debug > 3) printk("\n");
470 return 0;
471}
472
473static int __init
474get_eeprom_cksum(int off, int len, int *buffer)
475{
476 int i, cksum;
477
478 cksum = 0;
479 for (i = 0; i < len; i++)
480 cksum += buffer[i];
481 cksum &= 0xffff;
482 if (cksum == 0)
483 return 0;
484 return -1;
485}
486
6f519165
DS		 487#ifdef CONFIG_NET_POLL_CONTROLLER
488/*
489 * Polling receive - used by netconsole and other diagnostic tools
490 * to allow network i/o with interrupts disabled.
491 */
492static void net_poll_controller(struct net_device *dev)
493{
494 disable_irq(dev->irq);
7d12e780 495 net_interrupt(dev->irq, dev);
6f519165
DS		 496 enable_irq(dev->irq);
497}
498#endif
499
15d23e7a
SH		 500static const struct net_device_ops net_ops = {
501 .ndo_open = net_open,
502 .ndo_stop = net_close,
503 .ndo_tx_timeout = net_timeout,
504 .ndo_start_xmit = net_send_packet,
505 .ndo_get_stats = net_get_stats,
506 .ndo_set_multicast_list = set_multicast_list,
507 .ndo_set_mac_address = set_mac_address,
508#ifdef CONFIG_NET_POLL_CONTROLLER
509 .ndo_poll_controller = net_poll_controller,
510#endif
511 .ndo_change_mtu = eth_change_mtu,
512 .ndo_validate_addr = eth_validate_addr,
513};
514
1da177e4
LT		 515/* This is the real probe routine. Linux has a history of friendly device
516 probes on the ISA bus. A good device probes avoids doing writes, and
517 verifies that the correct device exists and functions.
518 Return 0 on success.
519 */
520
521static int __init
522cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
523{
524 struct net_local *lp = netdev_priv(dev);
525 static unsigned version_printed;
526 int i;
01bdc033 527 int tmp;
1da177e4
LT		 528 unsigned rev_type = 0;
529 int eeprom_buff[CHKSUM_LEN];
530 int retval;
531
1da177e4
LT		 532 /* Initialize the device structure. */
533 if (!modular) {
534 memset(lp, 0, sizeof(*lp));
535 spin_lock_init(&lp->lock);
536#ifndef MODULE
537#if ALLOW_DMA
538 if (g_cs89x0_dma) {
539 lp->use_dma = 1;
540 lp->dma = g_cs89x0_dma;
541 lp->dmasize = 16; /* Could make this an option... */
542 }
543#endif
544 lp->force = g_cs89x0_media__force;
545#endif
546 }
547
277cb103 548#ifdef CONFIG_ARCH_PNX010X
0dd3c781 549 initialize_ebi();
550
551 /* Map GPIO registers for the pins connected to the CS8900a. */
552 if (map_cirrus_gpio() < 0)
553 return -ENODEV;
554
555 reset_cirrus();
556
557 /* Map event-router registers. */
558 if (map_event_router() < 0)
559 return -ENODEV;
560
561 enable_cirrus_irq();
562
563 unmap_cirrus_gpio();
564 unmap_event_router();
565
566 dev->base_addr = ioaddr;
567
568 for (i = 0 ; i < 3 ; i++)
569 readreg(dev, 0);
570#endif
571
1da177e4
LT		 572 /* Grab the region so we can find another board if autoIRQ fails. */
573 /* WTF is going on here? */
574 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
575 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
576 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
577 retval = -EBUSY;
578 goto out1;
579 }
580
581#ifdef CONFIG_SH_HICOSH4
c41b20e7 582 /* truly reset the chip */
fc8c7d79
LB		 583 writeword(ioaddr, ADD_PORT, 0x0114);
584 writeword(ioaddr, DATA_PORT, 0x0040);
1da177e4
LT		 585#endif
586
587 /* if they give us an odd I/O address, then do ONE write to
588 the address port, to get it back to address zero, where we
589 expect to find the EISA signature word. An IO with a base of 0x3
590 will skip the test for the ADD_PORT. */
591 if (ioaddr & 1) {
592 if (net_debug > 1)
593 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
594 if ((ioaddr & 2) != 2)
fc8c7d79 595 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
1da177e4 596 printk(KERN_ERR "%s: bad signature 0x%x\n",
fc8c7d79 597 dev->name, readword(ioaddr & ~3, ADD_PORT));
1da177e4
LT		 598 retval = -ENODEV;
599 goto out2;
600 }
601 }
1da177e4
LT		 602
603 ioaddr &= ~3;
9e1402ab
GD		 604 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
605 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
fc8c7d79 606 writeword(ioaddr, ADD_PORT, PP_ChipID);
1da177e4 607
fc8c7d79 608 tmp = readword(ioaddr, DATA_PORT);
01bdc033 609 if (tmp != CHIP_EISA_ID_SIG) {
fc8c7d79 610 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
01bdc033 611 CHIP_EISA_ID_SIG_STR "\n",
fc8c7d79 612 dev->name, ioaddr, DATA_PORT, tmp);
1da177e4
LT		 613 retval = -ENODEV;
614 goto out2;
615 }
616
617 /* Fill in the 'dev' fields. */
618 dev->base_addr = ioaddr;
619
620 /* get the chip type */
621 rev_type = readreg(dev, PRODUCT_ID_ADD);
622 lp->chip_type = rev_type &~ REVISON_BITS;
623 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
624
625 /* Check the chip type and revision in order to set the correct send command
626 CS8920 revision C and CS8900 revision F can use the faster send. */
627 lp->send_cmd = TX_AFTER_381;
628 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
629 lp->send_cmd = TX_NOW;
630 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
631 lp->send_cmd = TX_NOW;
632
633 if (net_debug && version_printed++ == 0)
634 printk(version);
635
636 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
637 dev->name,
638 lp->chip_type==CS8900?'0':'2',
639 lp->chip_type==CS8920M?"M":"",
640 lp->chip_revision,
641 dev->base_addr);
642
643 reset_chip(dev);
6aa20a22 644
1da177e4
LT		 645 /* Here we read the current configuration of the chip. If there
646 is no Extended EEPROM then the idea is to not disturb the chip
647 configuration, it should have been correctly setup by automatic
648 EEPROM read on reset. So, if the chip says it read the EEPROM
649 the driver will always do *something* instead of complain that
650 adapter_cnf is 0. */
651
652#ifdef CONFIG_SH_HICOSH4
653 if (1) {
654 /* For the HiCO.SH4 board, things are different: we don't
655 have EEPROM, but there is some data in flash, so we go
656 get it there directly (MAC). */
657 __u16 *confd;
658 short cnt;
659 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
660 == 0x006c3000) {
661 confd = (__u16*) 0xa0013fc0;
662 } else {
663 confd = (__u16*) 0xa001ffc0;
664 }
665 cnt = (*confd++ & 0x00ff) >> 1;
666 while (--cnt > 0) {
667 __u16 j = *confd++;
6aa20a22 668
1da177e4
LT		 669 switch (j & 0x0fff) {
670 case PP_IA:
671 for (i = 0; i < ETH_ALEN/2; i++) {
672 dev->dev_addr[i*2] = confd[i] & 0xFF;
673 dev->dev_addr[i*2+1] = confd[i] >> 8;
674 }
675 break;
676 }
677 j = (j >> 12) + 1;
678 confd += j;
679 cnt -= j;
680 }
681 } else
682#endif
683
6aa20a22 684 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
1da177e4
LT		 685 (EEPROM_OK|EEPROM_PRESENT)) {
686 /* Load the MAC. */
687 for (i=0; i < ETH_ALEN/2; i++) {
688 unsigned int Addr;
689 Addr = readreg(dev, PP_IA+i*2);
690 dev->dev_addr[i*2] = Addr & 0xFF;
691 dev->dev_addr[i*2+1] = Addr >> 8;
692 }
6aa20a22
JG		 693
694 /* Load the Adapter Configuration.
695 Note: Barring any more specific information from some
696 other source (ie EEPROM+Schematics), we would not know
697 how to operate a 10Base2 interface on the AUI port.
698 However, since we do read the status of HCB1 and use
699 settings that always result in calls to control_dc_dc(dev,0)
700 a BNC interface should work if the enable pin
701 (dc/dc converter) is on HCB1. It will be called AUI
1da177e4 702 however. */
6aa20a22 703
1da177e4
LT		 704 lp->adapter_cnf = 0;
705 i = readreg(dev, PP_LineCTL);
706 /* Preserve the setting of the HCB1 pin. */
707 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
708 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
709 /* Save the sqelch bit */
710 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
711 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
712 /* Check if the card is in 10Base-t only mode */
713 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
714 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
715 /* Check if the card is in AUI only mode */
716 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
717 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
718 /* Check if the card is in Auto mode. */
719 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
6aa20a22 720 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
1da177e4 721 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
6aa20a22 722
1da177e4
LT		 723 if (net_debug > 1)
724 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
725 dev->name, i, lp->adapter_cnf);
726
727 /* IRQ. Other chips already probe, see below. */
6aa20a22 728 if (lp->chip_type == CS8900)
1da177e4 729 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
6aa20a22 730
1da177e4
LT		 731 printk( "[Cirrus EEPROM] ");
732 }
733
734 printk("\n");
6aa20a22 735
1da177e4
LT		 736 /* First check to see if an EEPROM is attached. */
737#ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
738 if (1) {
739 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
740 } else
741#endif
742 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
743 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
744 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
745 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
746 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
747 /* Check if the chip was able to read its own configuration starting
748 at 0 in the EEPROM*/
749 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
6aa20a22 750 (EEPROM_OK|EEPROM_PRESENT))
1da177e4 751 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
6aa20a22 752
1da177e4
LT		 753 } else {
754 /* This reads an extended EEPROM that is not documented
755 in the CS8900 datasheet. */
6aa20a22 756
1da177e4
LT		 757 /* get transmission control word but keep the autonegotiation bits */
758 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
759 /* Store adapter configuration */
760 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
761 /* Store ISA configuration */
762 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
763 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
764
765 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
766 /* store the initial memory base address */
767 for (i = 0; i < ETH_ALEN/2; i++) {
768 dev->dev_addr[i*2] = eeprom_buff[i];
769 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
770 }
771 if (net_debug > 1)
772 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
773 dev->name, lp->adapter_cnf);
774 }
775
776 /* allow them to force multiple transceivers. If they force multiple, autosense */
777 {
778 int count = 0;
779 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
780 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
781 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
782 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
783 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
784 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
785 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
786 }
787
788 if (net_debug > 1)
789 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
790 dev->name, lp->force, lp->adapter_cnf);
791
792 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
793
794 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
795
796 /* FIXME: we don't set the Ethernet address on the command line. Use
797 ifconfig IFACE hw ether AABBCCDDEEFF */
798
799 printk(KERN_INFO "cs89x0 media %s%s%s",
800 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
801 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
802 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
803
804 lp->irq_map = 0xffff;
805
806 /* If this is a CS8900 then no pnp soft */
807 if (lp->chip_type != CS8900 &&
808 /* Check if the ISA IRQ has been set */
809 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
810 (i != 0 && i < CS8920_NO_INTS))) {
811 if (!dev->irq)
812 dev->irq = i;
813 } else {
814 i = lp->isa_config & INT_NO_MASK;
815 if (lp->chip_type == CS8900) {
0ac4ed9d 816#ifdef CONFIG_CS89x0_NONISA_IRQ
1da177e4
LT		 817 i = cs8900_irq_map[0];
818#else
819 /* Translate the IRQ using the IRQ mapping table. */
ff8ac609 820 if (i >= ARRAY_SIZE(cs8900_irq_map))
1da177e4
LT		 821 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
822 else
823 i = cs8900_irq_map[i];
6aa20a22 824
1da177e4
LT		 825 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
826 } else {
827 int irq_map_buff[IRQ_MAP_LEN/2];
828
829 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
830 IRQ_MAP_LEN/2,
831 irq_map_buff) >= 0) {
832 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
833 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
834 }
835#endif
836 }
837 if (!dev->irq)
838 dev->irq = i;
839 }
840
841 printk(" IRQ %d", dev->irq);
842
843#if ALLOW_DMA
844 if (lp->use_dma) {
845 get_dma_channel(dev);
846 printk(", DMA %d", dev->dma);
847 }
848 else
849#endif
850 {
851 printk(", programmed I/O");
852 }
853
854 /* print the ethernet address. */
e174961c 855 printk(", MAC %pM", dev->dev_addr);
1da177e4 856
15d23e7a
SH		 857 dev->netdev_ops = &net_ops;
858 dev->watchdog_timeo = HZ;
1da177e4
LT		 859
860 printk("\n");
861 if (net_debug)
862 printk("cs89x0_probe1() successful\n");
b1fc5505
HX		 863
864 retval = register_netdev(dev);
865 if (retval)
866 goto out3;
1da177e4 867 return 0;
b1fc5505 868out3:
fc8c7d79 869 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
1da177e4
LT		 870out2:
871 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
872out1:
873 return retval;
874}
875
6aa20a22 876
1da177e4
LT		 877/*********************************
878 * This page contains DMA routines
879**********************************/
880
881#if ALLOW_DMA
882
883#define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
884
885static void
886get_dma_channel(struct net_device *dev)
887{
888 struct net_local *lp = netdev_priv(dev);
889
890 if (lp->dma) {
891 dev->dma = lp->dma;
892 lp->isa_config |= ISA_RxDMA;
893 } else {
894 if ((lp->isa_config & ANY_ISA_DMA) == 0)
895 return;
896 dev->dma = lp->isa_config & DMA_NO_MASK;
897 if (lp->chip_type == CS8900)
898 dev->dma += 5;
899 if (dev->dma < 5 || dev->dma > 7) {
900 lp->isa_config &= ~ANY_ISA_DMA;
901 return;
902 }
903 }
1da177e4
LT		 904}
905
906static void
907write_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
919static void
920set_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
942static int
943dma_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
952static int
953dma_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
969static void
970dma_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) {
661a16ce 985 count_rx_errors(status, dev);
1da177e4
LT		 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);
661a16ce 994 dev->stats.rx_dropped++;
1da177e4
LT		 995
996 /* AKPM: advance bp to the next frame */
997skip_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 */
1da177e4
LT		 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);
661a16ce
KV		 1024 dev->stats.rx_packets++;
1025 dev->stats.rx_bytes += length;
1da177e4
LT		 1026}
1027
1028#endif /* ALLOW_DMA */
1029
dac499f9 1030static void __init reset_chip(struct net_device *dev)
1da177e4 1031{
0ac4ed9d 1032#if !defined(CONFIG_MACH_MX31ADS)
9c878967 1033#if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1da177e4
LT		 1034 struct net_local *lp = netdev_priv(dev);
1035 int ioaddr = dev->base_addr;
1036#endif
1037 int reset_start_time;
1038
1039 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1040
1041 /* wait 30 ms */
1042 msleep(30);
1043
9c878967 1044#if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1da177e4
LT		 1045 if (lp->chip_type != CS8900) {
1046 /* Hardware problem requires PNP registers to be reconfigured after a reset */
fc8c7d79 1047 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1da177e4
LT		 1048 outb(dev->irq, ioaddr + DATA_PORT);
1049 outb(0, ioaddr + DATA_PORT + 1);
1050
fc8c7d79 1051 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1da177e4
LT		 1052 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1053 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1054 }
1055#endif /* IXDP2x01 */
1056
1057 /* Wait until the chip is reset */
1058 reset_start_time = jiffies;
1059 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1060 ;
0ac4ed9d 1061#endif /* !CONFIG_MACH_MX31ADS */
1da177e4
LT		 1062}
1063
6aa20a22 1064
1da177e4
LT		 1065static void
1066control_dc_dc(struct net_device *dev, int on_not_off)
1067{
1068 struct net_local *lp = netdev_priv(dev);
1069 unsigned int selfcontrol;
1070 int timenow = jiffies;
6aa20a22 1071 /* control the DC to DC convertor in the SelfControl register.
1da177e4
LT		 1072 Note: This is hooked up to a general purpose pin, might not
1073 always be a DC to DC convertor. */
1074
1075 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1076 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1077 selfcontrol |= HCB1;
1078 else
1079 selfcontrol &= ~HCB1;
1080 writereg(dev, PP_SelfCTL, selfcontrol);
1081
1082 /* Wait for the DC/DC converter to power up - 500ms */
1083 while (jiffies - timenow < HZ)
1084 ;
1085}
1086
1087#define DETECTED_NONE 0
1088#define DETECTED_RJ45H 1
1089#define DETECTED_RJ45F 2
1090#define DETECTED_AUI 3
1091#define DETECTED_BNC 4
1092
1093static int
1094detect_tp(struct net_device *dev)
1095{
1096 struct net_local *lp = netdev_priv(dev);
1097 int timenow = jiffies;
1098 int fdx;
1099
1100 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1101
1102 /* If connected to another full duplex capable 10-Base-T card the link pulses
1103 seem to be lost when the auto detect bit in the LineCTL is set.
1104 To overcome this the auto detect bit will be cleared whilst testing the
1105 10-Base-T interface. This would not be necessary for the sparrow chip but
1106 is simpler to do it anyway. */
1107 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1108 control_dc_dc(dev, 0);
1109
1110 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1111 for (timenow = jiffies; jiffies - timenow < 15; )
1112 ;
1113 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1114 return DETECTED_NONE;
1115
1116 if (lp->chip_type == CS8900) {
1117 switch (lp->force & 0xf0) {
1118#if 0
1119 case FORCE_AUTO:
1120 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1121 return DETECTED_NONE;
1122#endif
1123 /* CS8900 doesn't support AUTO, change to HALF*/
1124 case FORCE_AUTO:
1125 lp->force &= ~FORCE_AUTO;
1126 lp->force |= FORCE_HALF;
1127 break;
1128 case FORCE_HALF:
1129 break;
1130 case FORCE_FULL:
1131 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1132 break;
1133 }
1134 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1135 } else {
1136 switch (lp->force & 0xf0) {
1137 case FORCE_AUTO:
1138 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1139 break;
1140 case FORCE_HALF:
1141 lp->auto_neg_cnf = 0;
1142 break;
1143 case FORCE_FULL:
1144 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1145 break;
1146 }
1147
1148 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1149
1150 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1151 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1152 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1153 if (jiffies - timenow > 4000) {
1154 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1155 break;
1156 }
1157 }
1158 }
1159 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1160 }
1161 if (fdx)
1162 return DETECTED_RJ45F;
1163 else
1164 return DETECTED_RJ45H;
1165}
1166
1167/* send a test packet - return true if carrier bits are ok */
1168static int
1169send_test_pkt(struct net_device *dev)
1170{
1171 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1172 0, 46, /* A 46 in network order */
1173 0, 0, /* DSAP=0 & SSAP=0 fields */
1174 0xf3, 0 /* Control (Test Req + P bit set) */ };
1175 long timenow = jiffies;
1176
1177 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1178
1179 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1180 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1181
974dffc2
LB		 1182 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1183 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1da177e4
LT		 1184
1185 /* Test to see if the chip has allocated memory for the packet */
1186 while (jiffies - timenow < 5)
1187 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1188 break;
1189 if (jiffies - timenow >= 5)
1190 return 0; /* this shouldn't happen */
1191
1192 /* Write the contents of the packet */
084f746a 1193 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1da177e4
LT		 1194
1195 if (net_debug > 1) printk("Sending test packet ");
1196 /* wait a couple of jiffies for packet to be received */
1197 for (timenow = jiffies; jiffies - timenow < 3; )
1198 ;
1199 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1200 if (net_debug > 1) printk("succeeded\n");
1201 return 1;
1202 }
1203 if (net_debug > 1) printk("failed\n");
1204 return 0;
1205}
1206
1207
1208static int
1209detect_aui(struct net_device *dev)
1210{
1211 struct net_local *lp = netdev_priv(dev);
1212
1213 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1214 control_dc_dc(dev, 0);
1215
1216 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1217
1218 if (send_test_pkt(dev))
1219 return DETECTED_AUI;
1220 else
1221 return DETECTED_NONE;
1222}
1223
1224static int
1225detect_bnc(struct net_device *dev)
1226{
1227 struct net_local *lp = netdev_priv(dev);
1228
1229 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1230 control_dc_dc(dev, 1);
1231
1232 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1233
1234 if (send_test_pkt(dev))
1235 return DETECTED_BNC;
1236 else
1237 return DETECTED_NONE;
1238}
1239
6aa20a22 1240
1da177e4
LT		 1241static void
1242write_irq(struct net_device *dev, int chip_type, int irq)
1243{
1244 int i;
1245
1246 if (chip_type == CS8900) {
1247 /* Search the mapping table for the corresponding IRQ pin. */
ff8ac609 1248 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
1da177e4
LT		 1249 if (cs8900_irq_map[i] == irq)
1250 break;
1251 /* Not found */
ff8ac609 1252 if (i == ARRAY_SIZE(cs8900_irq_map))
1da177e4
LT		 1253 i = 3;
1254 writereg(dev, PP_CS8900_ISAINT, i);
1255 } else {
1256 writereg(dev, PP_CS8920_ISAINT, irq);
1257 }
1258}
1259
1260/* Open/initialize the board. This is called (in the current kernel)
1261 sometime after booting when the 'ifconfig' program is run.
1262
1263 This routine should set everything up anew at each open, even
1264 registers that "should" only need to be set once at boot, so that
1265 there is non-reboot way to recover if something goes wrong.
1266 */
1267
1268/* AKPM: do we need to do any locking here? */
1269
1270static int
1271net_open(struct net_device *dev)
1272{
1273 struct net_local *lp = netdev_priv(dev);
1274 int result = 0;
1275 int i;
1276 int ret;
1277
277cb103 1278#if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1da177e4
LT		 1279 if (dev->irq < 2) {
1280 /* Allow interrupts to be generated by the chip */
1281/* Cirrus' release had this: */
1282#if 0
1283 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1284#endif
1285/* And 2.3.47 had this: */
1286 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1287
1288 for (i = 2; i < CS8920_NO_INTS; i++) {
1289 if ((1 << i) & lp->irq_map) {
1290 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1291 dev->irq = i;
1292 write_irq(dev, lp->chip_type, i);
1293 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1294 break;
1295 }
1296 }
1297 }
1298
1299 if (i >= CS8920_NO_INTS) {
1300 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1301 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1302 ret = -EAGAIN;
1303 goto bad_out;
1304 }
1305 }
1306 else
1307#endif
1308 {
0ac4ed9d 1309#ifndef CONFIG_CS89x0_NONISA_IRQ
1da177e4
LT		 1310 if (((1 << dev->irq) & lp->irq_map) == 0) {
1311 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1312 dev->name, dev->irq, lp->irq_map);
1313 ret = -EAGAIN;
1314 goto bad_out;
1315 }
1316#endif
1317/* FIXME: Cirrus' release had this: */
1318 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1319/* And 2.3.47 had this: */
1320#if 0
1321 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1322#endif
1323 write_irq(dev, lp->chip_type, dev->irq);
a0607fd3 1324 ret = request_irq(dev->irq, net_interrupt, 0, dev->name, dev);
1da177e4 1325 if (ret) {
569b7892 1326 printk(KERN_ERR "cs89x0: request_irq(%d) failed\n", dev->irq);
1da177e4
LT		 1327 goto bad_out;
1328 }
1329 }
1330
1331#if ALLOW_DMA
1332 if (lp->use_dma) {
1333 if (lp->isa_config & ANY_ISA_DMA) {
1334 unsigned long flags;
1335 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1336 get_order(lp->dmasize * 1024));
1337
1338 if (!lp->dma_buff) {
1339 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1340 goto release_irq;
1341 }
1342 if (net_debug > 1) {
1343 printk( "%s: dma %lx %lx\n",
1344 dev->name,
1345 (unsigned long)lp->dma_buff,
1346 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1347 }
1348 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1349 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1350 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1351 goto release_irq;
1352 }
1353 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1354 if (request_dma(dev->dma, dev->name)) {
1355 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1356 goto release_irq;
1357 }
1358 write_dma(dev, lp->chip_type, dev->dma);
1359 lp->rx_dma_ptr = lp->dma_buff;
1360 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1361 spin_lock_irqsave(&lp->lock, flags);
1362 disable_dma(dev->dma);
1363 clear_dma_ff(dev->dma);
ef0657c4 1364 set_dma_mode(dev->dma, DMA_RX_MODE); /* auto_init as well */
1da177e4
LT		 1365 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1366 set_dma_count(dev->dma, lp->dmasize*1024);
1367 enable_dma(dev->dma);
1368 spin_unlock_irqrestore(&lp->lock, flags);
1369 }
1370 }
1371#endif /* ALLOW_DMA */
1372
1373 /* set the Ethernet address */
1374 for (i=0; i < ETH_ALEN/2; i++)
1375 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1376
1377 /* while we're testing the interface, leave interrupts disabled */
1378 writereg(dev, PP_BusCTL, MEMORY_ON);
1379
1380 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1381 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1382 lp->linectl = LOW_RX_SQUELCH;
1383 else
1384 lp->linectl = 0;
1385
1386 /* check to make sure that they have the "right" hardware available */
1387 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1388 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1389 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1390 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1391 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1392 }
277cb103 1393#ifdef CONFIG_ARCH_PNX010X
0dd3c781 1394 result = A_CNF_10B_T;
1395#endif
1da177e4
LT		 1396 if (!result) {
1397 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
17a9440f
WC		 1398release_dma:
1399#if ALLOW_DMA
1400 free_dma(dev->dma);
17a9440f 1401release_irq:
1da177e4
LT		 1402 release_dma_buff(lp);
1403#endif
1404 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1405 free_irq(dev->irq, dev);
1406 ret = -EAGAIN;
1407 goto bad_out;
1408 }
1409
1410 /* set the hardware to the configured choice */
1411 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1412 case A_CNF_MEDIA_10B_T:
1413 result = detect_tp(dev);
1414 if (result==DETECTED_NONE) {
1415 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1416 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1417 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1418 }
1419 break;
1420 case A_CNF_MEDIA_AUI:
1421 result = detect_aui(dev);
1422 if (result==DETECTED_NONE) {
1423 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1424 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1425 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1426 }
1427 break;
1428 case A_CNF_MEDIA_10B_2:
1429 result = detect_bnc(dev);
1430 if (result==DETECTED_NONE) {
1431 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1432 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1433 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1434 }
1435 break;
1436 case A_CNF_MEDIA_AUTO:
1437 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1438 if (lp->adapter_cnf & A_CNF_10B_T)
1439 if ((result = detect_tp(dev)) != DETECTED_NONE)
1440 break;
1441 if (lp->adapter_cnf & A_CNF_AUI)
1442 if ((result = detect_aui(dev)) != DETECTED_NONE)
1443 break;
1444 if (lp->adapter_cnf & A_CNF_10B_2)
1445 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1446 break;
1447 printk(KERN_ERR "%s: no media detected\n", dev->name);
17a9440f 1448 goto release_dma;
1da177e4
LT		 1449 }
1450 switch(result) {
1451 case DETECTED_NONE:
1452 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
17a9440f 1453 goto release_dma;
1da177e4
LT		 1454 case DETECTED_RJ45H:
1455 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1456 break;
1457 case DETECTED_RJ45F:
1458 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1459 break;
1460 case DETECTED_AUI:
1461 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1462 break;
1463 case DETECTED_BNC:
1464 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1465 break;
1466 }
1467
1468 /* Turn on both receive and transmit operations */
1469 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1470
1471 /* Receive only error free packets addressed to this card */
1472 lp->rx_mode = 0;
1473 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1474
1475 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1476
1477 if (lp->isa_config & STREAM_TRANSFER)
1478 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1479#if ALLOW_DMA
1480 set_dma_cfg(dev);
1481#endif
1482 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1483
1484 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1485 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1486
1487 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1488#if ALLOW_DMA
1489 dma_bufcfg(dev) |
1490#endif
1491 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1492
1493 /* now that we've got our act together, enable everything */
1494 writereg(dev, PP_BusCTL, ENABLE_IRQ
1495 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1496#if ALLOW_DMA
1497 | dma_busctl(dev)
1498#endif
1499 );
1500 netif_start_queue(dev);
1501 if (net_debug > 1)
1502 printk("cs89x0: net_open() succeeded\n");
1503 return 0;
1504bad_out:
1505 return ret;
1506}
1507
1508static void net_timeout(struct net_device *dev)
1509{
1510 /* If we get here, some higher level has decided we are broken.
1511 There should really be a "kick me" function call instead. */
1512 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1513 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1514 /* Try to restart the adaptor. */
1515 netif_wake_queue(dev);
1516}
1517
61357325 1518static netdev_tx_t net_send_packet(struct sk_buff *skb,struct net_device *dev)
1da177e4
LT		 1519{
1520 struct net_local *lp = netdev_priv(dev);
79fbe134 1521 unsigned long flags;
1da177e4
LT		 1522
1523 if (net_debug > 3) {
1524 printk("%s: sent %d byte packet of type %x\n",
1525 dev->name, skb->len,
1526 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1527 }
1528
1529 /* keep the upload from being interrupted, since we
1530 ask the chip to start transmitting before the
1531 whole packet has been completely uploaded. */
1532
79fbe134 1533 spin_lock_irqsave(&lp->lock, flags);
1da177e4
LT		 1534 netif_stop_queue(dev);
1535
1536 /* initiate a transmit sequence */
974dffc2
LB		 1537 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1538 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1da177e4
LT		 1539
1540 /* Test to see if the chip has allocated memory for the packet */
1541 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1542 /*
1543 * Gasp! It hasn't. But that shouldn't happen since
1544 * we're waiting for TxOk, so return 1 and requeue this packet.
1545 */
6aa20a22 1546
79fbe134 1547 spin_unlock_irqrestore(&lp->lock, flags);
1da177e4 1548 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
5b548140 1549 return NETDEV_TX_BUSY;
1da177e4
LT		 1550 }
1551 /* Write the contents of the packet */
084f746a 1552 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
79fbe134 1553 spin_unlock_irqrestore(&lp->lock, flags);
661a16ce 1554 dev->stats.tx_bytes += skb->len;
1da177e4
LT		 1555 dev_kfree_skb (skb);
1556
1557 /*
1558 * We DO NOT call netif_wake_queue() here.
1559 * We also DO NOT call netif_start_queue().
1560 *
1561 * Either of these would cause another bottom half run through
1562 * net_send_packet() before this packet has fully gone out. That causes
1563 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1564 * a dog. We just return and wait for the Tx completion interrupt handler
1565 * to restart the netdevice layer
1566 */
1567
6ed10654 1568 return NETDEV_TX_OK;
1da177e4 1569}
6aa20a22 1570
1da177e4
LT		 1571/* The typical workload of the driver:
1572 Handle the network interface interrupts. */
6aa20a22 1573
7d12e780 1574static irqreturn_t net_interrupt(int irq, void *dev_id)
1da177e4
LT		 1575{
1576 struct net_device *dev = dev_id;
1577 struct net_local *lp;
1578 int ioaddr, status;
1579 int handled = 0;
1580
1581 ioaddr = dev->base_addr;
1582 lp = netdev_priv(dev);
1583
1584 /* we MUST read all the events out of the ISQ, otherwise we'll never
1585 get interrupted again. As a consequence, we can't have any limit
1586 on the number of times we loop in the interrupt handler. The
1587 hardware guarantees that eventually we'll run out of events. Of
1588 course, if you're on a slow machine, and packets are arriving
1589 faster than you can read them off, you're screwed. Hasta la
1590 vista, baby! */
974dffc2 1591 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1da177e4
LT		 1592 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1593 handled = 1;
1594 switch(status & ISQ_EVENT_MASK) {
1595 case ISQ_RECEIVER_EVENT:
1596 /* Got a packet(s). */
1597 net_rx(dev);
1598 break;
1599 case ISQ_TRANSMITTER_EVENT:
661a16ce 1600 dev->stats.tx_packets++;
1da177e4
LT		 1601 netif_wake_queue(dev); /* Inform upper layers. */
1602 if ((status & ( TX_OK |
1603 TX_LOST_CRS |
1604 TX_SQE_ERROR |
1605 TX_LATE_COL |
1606 TX_16_COL)) != TX_OK) {
661a16ce
KV		 1607 if ((status & TX_OK) == 0)
1608 dev->stats.tx_errors++;
1609 if (status & TX_LOST_CRS)
1610 dev->stats.tx_carrier_errors++;
1611 if (status & TX_SQE_ERROR)
1612 dev->stats.tx_heartbeat_errors++;
1613 if (status & TX_LATE_COL)
1614 dev->stats.tx_window_errors++;
1615 if (status & TX_16_COL)
1616 dev->stats.tx_aborted_errors++;
1da177e4
LT		 1617 }
1618 break;
1619 case ISQ_BUFFER_EVENT:
1620 if (status & READY_FOR_TX) {
1621 /* we tried to transmit a packet earlier,
1622 but inexplicably ran out of buffers.
1623 That shouldn't happen since we only ever
1624 load one packet. Shrug. Do the right
1625 thing anyway. */
1626 netif_wake_queue(dev); /* Inform upper layers. */
1627 }
1628 if (status & TX_UNDERRUN) {
1629 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1630 lp->send_underrun++;
1631 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1632 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1633 /* transmit cycle is done, although
1634 frame wasn't transmitted - this
1635 avoids having to wait for the upper
1636 layers to timeout on us, in the
1637 event of a tx underrun */
1638 netif_wake_queue(dev); /* Inform upper layers. */
1639 }
1640#if ALLOW_DMA
1641 if (lp->use_dma && (status & RX_DMA)) {
1642 int count = readreg(dev, PP_DmaFrameCnt);
1643 while(count) {
1644 if (net_debug > 5)
1645 printk("%s: receiving %d DMA frames\n", dev->name, count);
1646 if (net_debug > 2 && count >1)
1647 printk("%s: receiving %d DMA frames\n", dev->name, count);
1648 dma_rx(dev);
1649 if (--count == 0)
1650 count = readreg(dev, PP_DmaFrameCnt);
1651 if (net_debug > 2 && count > 0)
1652 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1653 }
1654 }
1655#endif
1656 break;
1657 case ISQ_RX_MISS_EVENT:
661a16ce 1658 dev->stats.rx_missed_errors += (status >> 6);
1da177e4
LT		 1659 break;
1660 case ISQ_TX_COL_EVENT:
661a16ce 1661 dev->stats.collisions += (status >> 6);
1da177e4
LT		 1662 break;
1663 }
1664 }
1665 return IRQ_RETVAL(handled);
1666}
1667
1668static void
661a16ce 1669count_rx_errors(int status, struct net_device *dev)
1da177e4 1670{
661a16ce
KV		 1671 dev->stats.rx_errors++;
1672 if (status & RX_RUNT)
1673 dev->stats.rx_length_errors++;
1674 if (status & RX_EXTRA_DATA)
1675 dev->stats.rx_length_errors++;
1676 if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA|RX_RUNT)))
1da177e4 1677 /* per str 172 */
661a16ce
KV		 1678 dev->stats.rx_crc_errors++;
1679 if (status & RX_DRIBBLE)
1680 dev->stats.rx_frame_errors++;
1da177e4
LT		 1681}
1682
1683/* We have a good packet(s), get it/them out of the buffers. */
1684static void
1685net_rx(struct net_device *dev)
1686{
1da177e4
LT		 1687 struct sk_buff *skb;
1688 int status, length;
1689
1690 int ioaddr = dev->base_addr;
fc8c7d79
LB		 1691 status = readword(ioaddr, RX_FRAME_PORT);
1692 length = readword(ioaddr, RX_FRAME_PORT);
1da177e4
LT		 1693
1694 if ((status & RX_OK) == 0) {
661a16ce 1695 count_rx_errors(status, dev);
1da177e4
LT		 1696 return;
1697 }
1698
1699 /* Malloc up new buffer. */
1700 skb = dev_alloc_skb(length + 2);
1701 if (skb == NULL) {
1702#if 0 /* Again, this seems a cruel thing to do */
1703 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1704#endif
661a16ce 1705 dev->stats.rx_dropped++;
1da177e4
LT		 1706 return;
1707 }
1708 skb_reserve(skb, 2); /* longword align L3 header */
1da177e4 1709
084f746a 1710 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1da177e4 1711 if (length & 1)
fc8c7d79 1712 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1da177e4
LT		 1713
1714 if (net_debug > 3) {
1715 printk( "%s: received %d byte packet of type %x\n",
1716 dev->name, length,
1717 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1718 }
1719
1720 skb->protocol=eth_type_trans(skb,dev);
1721 netif_rx(skb);
661a16ce
KV		 1722 dev->stats.rx_packets++;
1723 dev->stats.rx_bytes += length;
1da177e4
LT		 1724}
1725
1726#if ALLOW_DMA
1727static void release_dma_buff(struct net_local *lp)
1728{
1729 if (lp->dma_buff) {
1730 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1731 lp->dma_buff = NULL;
1732 }
1733}
1734#endif
1735
1736/* The inverse routine to net_open(). */
1737static int
1738net_close(struct net_device *dev)
1739{
1740#if ALLOW_DMA
1741 struct net_local *lp = netdev_priv(dev);
1742#endif
1743
1744 netif_stop_queue(dev);
6aa20a22 1745
1da177e4
LT		 1746 writereg(dev, PP_RxCFG, 0);
1747 writereg(dev, PP_TxCFG, 0);
1748 writereg(dev, PP_BufCFG, 0);
1749 writereg(dev, PP_BusCTL, 0);
1750
1751 free_irq(dev->irq, dev);
1752
1753#if ALLOW_DMA
1754 if (lp->use_dma && lp->dma) {
1755 free_dma(dev->dma);
1756 release_dma_buff(lp);
1757 }
1758#endif
1759
1760 /* Update the statistics here. */
1761 return 0;
1762}
1763
1764/* Get the current statistics. This may be called with the card open or
1765 closed. */
1766static struct net_device_stats *
1767net_get_stats(struct net_device *dev)
1768{
1769 struct net_local *lp = netdev_priv(dev);
1770 unsigned long flags;
1771
1772 spin_lock_irqsave(&lp->lock, flags);
1773 /* Update the statistics from the device registers. */
661a16ce
KV		 1774 dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1775 dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1da177e4
LT		 1776 spin_unlock_irqrestore(&lp->lock, flags);
1777
661a16ce 1778 return &dev->stats;
1da177e4
LT		 1779}
1780
1781static void set_multicast_list(struct net_device *dev)
1782{
1783 struct net_local *lp = netdev_priv(dev);
1784 unsigned long flags;
1785
1786 spin_lock_irqsave(&lp->lock, flags);
1787 if(dev->flags&IFF_PROMISC)
1788 {
1789 lp->rx_mode = RX_ALL_ACCEPT;
1790 }
e1d44477 1791 else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev))
1da177e4
LT		 1792 {
1793 /* The multicast-accept list is initialized to accept-all, and we
1794 rely on higher-level filtering for now. */
1795 lp->rx_mode = RX_MULTCAST_ACCEPT;
6aa20a22 1796 }
1da177e4
LT		 1797 else
1798 lp->rx_mode = 0;
1799
1800 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1801
1802 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1803 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1804 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1805 spin_unlock_irqrestore(&lp->lock, flags);
1806}
1807
1808
1809static int set_mac_address(struct net_device *dev, void *p)
1810{
1811 int i;
1812 struct sockaddr *addr = p;
1813
1da177e4
LT		 1814 if (netif_running(dev))
1815 return -EBUSY;
1816
1817 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1818
e174961c
JB		 1819 if (net_debug)
1820 printk("%s: Setting MAC address to %pM.\n",
1821 dev->name, dev->dev_addr);
1822
1da177e4
LT		 1823 /* set the Ethernet address */
1824 for (i=0; i < ETH_ALEN/2; i++)
1825 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1826
1827 return 0;
1828}
1829
1830#ifdef MODULE
1831
1832static struct net_device *dev_cs89x0;
1833
1834/*
6aa20a22
JG		 1835 * Support the 'debug' module parm even if we're compiled for non-debug to
1836 * avoid breaking someone's startup scripts
1da177e4
LT		 1837 */
1838
1839static int io;
1840static int irq;
1841static int debug;
1842static char media[8];
1843static int duplex=-1;
1844
1845static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1846static int dma;
1847static int dmasize=16; /* or 64 */
1848
1849module_param(io, int, 0);
1850module_param(irq, int, 0);
1851module_param(debug, int, 0);
1852module_param_string(media, media, sizeof(media), 0);
1853module_param(duplex, int, 0);
1854module_param(dma , int, 0);
1855module_param(dmasize , int, 0);
1856module_param(use_dma , int, 0);
1857MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1858MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1859#if DEBUGGING
1860MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1861#else
1862MODULE_PARM_DESC(debug, "(ignored)");
1863#endif
1864MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1865/* No other value than -1 for duplex seems to be currently interpreted */
1866MODULE_PARM_DESC(duplex, "(ignored)");
1867#if ALLOW_DMA
1868MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1869MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1870MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1871#else
1872MODULE_PARM_DESC(dma , "(ignored)");
1873MODULE_PARM_DESC(dmasize , "(ignored)");
1874MODULE_PARM_DESC(use_dma , "(ignored)");
1875#endif
1876
e1f8e874 1877MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton");
1da177e4
LT		 1878MODULE_LICENSE("GPL");
1879
1880
1881/*
1882* media=t - specify media type
1883 or media=2
1884 or media=aui
1885 or medai=auto
1886* duplex=0 - specify forced half/full/autonegotiate duplex
1887* debug=# - debug level
1888
1889
1890* Default Chip Configuration:
1891 * DMA Burst = enabled
1892 * IOCHRDY Enabled = enabled
1893 * UseSA = enabled
1894 * CS8900 defaults to half-duplex if not specified on command-line
1895 * CS8920 defaults to autoneg if not specified on command-line
1896 * Use reset defaults for other config parameters
1897
1898* Assumptions:
1899 * media type specified is supported (circuitry is present)
1900 * if memory address is > 1MB, then required mem decode hw is present
1901 * if 10B-2, then agent other than driver will enable DC/DC converter
1902 (hw or software util)
1903
1904
1905*/
1906
e26c129a 1907int __init init_module(void)
1da177e4
LT		 1908{
1909 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1910 struct net_local *lp;
1911 int ret = 0;
1912
1913#if DEBUGGING
1914 net_debug = debug;
1915#else
1916 debug = 0;
1917#endif
1918 if (!dev)
1919 return -ENOMEM;
1920
1921 dev->irq = irq;
1922 dev->base_addr = io;
1923 lp = netdev_priv(dev);
1924
1925#if ALLOW_DMA
1926 if (use_dma) {
1927 lp->use_dma = use_dma;
1928 lp->dma = dma;
1929 lp->dmasize = dmasize;
1930 }
1931#endif
1932
1933 spin_lock_init(&lp->lock);
1934
1935 /* boy, they'd better get these right */
1936 if (!strcmp(media, "rj45"))
1937 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1938 else if (!strcmp(media, "aui"))
1939 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1940 else if (!strcmp(media, "bnc"))
1941 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1942 else
1943 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1944
1945 if (duplex==-1)
1946 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1947
1948 if (io == 0) {
1949 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1950 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1951 ret = -EPERM;
1952 goto out;
1953 } else if (io <= 0x1ff) {
1954 ret = -ENXIO;
1955 goto out;
1956 }
1957
1958#if ALLOW_DMA
1959 if (use_dma && dmasize != 16 && dmasize != 64) {
1960 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1961 ret = -EPERM;
1962 goto out;
1963 }
1964#endif
1965 ret = cs89x0_probe1(dev, io, 1);
1966 if (ret)
1967 goto out;
1968
1da177e4
LT		 1969 dev_cs89x0 = dev;
1970 return 0;
1971out:
1972 free_netdev(dev);
1973 return ret;
1974}
1975
afc8eb46 1976void __exit
1da177e4
LT		 1977cleanup_module(void)
1978{
1979 unregister_netdev(dev_cs89x0);
fc8c7d79 1980 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1da177e4
LT		 1981 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1982 free_netdev(dev_cs89x0);
1983}
1984#endif /* MODULE */
6aa20a22 1985
1da177e4
LT		 1986/*
1987 * Local variables:
1988 * version-control: t
1989 * kept-new-versions: 5
1990 * c-indent-level: 8
1991 * tab-width: 8
1992 * End:
1993 *
1994 */
Clone of davem's net-next-2.6 tree