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