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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 | |
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}; | |
0dd3c781 | 177 | #elif defined(CONFIG_ARCH_PNX0105) |
178 | #include <asm/irq.h> | |
179 | #include <asm/arch/gpio.h> | |
180 | #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */ | |
181 | #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */ | |
182 | static unsigned int netcard_portlist[] __initdata = {CIRRUS_DEFAULT_BASE, 0}; | |
183 | static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0}; | |
1da177e4 LT |
184 | #else |
185 | static unsigned int netcard_portlist[] __initdata = | |
186 | { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0}; | |
187 | static unsigned int cs8900_irq_map[] = {10,11,12,5}; | |
188 | #endif | |
189 | ||
190 | #if DEBUGGING | |
191 | static unsigned int net_debug = DEBUGGING; | |
192 | #else | |
193 | #define net_debug 0 /* gcc will remove all the debug code for us */ | |
194 | #endif | |
195 | ||
196 | /* The number of low I/O ports used by the ethercard. */ | |
197 | #define NETCARD_IO_EXTENT 16 | |
198 | ||
199 | /* we allow the user to override various values normally set in the EEPROM */ | |
200 | #define FORCE_RJ45 0x0001 /* pick one of these three */ | |
201 | #define FORCE_AUI 0x0002 | |
202 | #define FORCE_BNC 0x0004 | |
203 | ||
204 | #define FORCE_AUTO 0x0010 /* pick one of these three */ | |
205 | #define FORCE_HALF 0x0020 | |
206 | #define FORCE_FULL 0x0030 | |
207 | ||
208 | /* Information that need to be kept for each board. */ | |
209 | struct net_local { | |
210 | struct net_device_stats stats; | |
211 | int chip_type; /* one of: CS8900, CS8920, CS8920M */ | |
212 | char chip_revision; /* revision letter of the chip ('A'...) */ | |
213 | int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */ | |
214 | int auto_neg_cnf; /* auto-negotiation word from EEPROM */ | |
215 | int adapter_cnf; /* adapter configuration from EEPROM */ | |
216 | int isa_config; /* ISA configuration from EEPROM */ | |
217 | int irq_map; /* IRQ map from EEPROM */ | |
218 | int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */ | |
219 | int curr_rx_cfg; /* a copy of PP_RxCFG */ | |
220 | int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */ | |
221 | int send_underrun; /* keep track of how many underruns in a row we get */ | |
222 | int force; /* force various values; see FORCE* above. */ | |
223 | spinlock_t lock; | |
224 | #if ALLOW_DMA | |
225 | int use_dma; /* Flag: we're using dma */ | |
226 | int dma; /* DMA channel */ | |
227 | int dmasize; /* 16 or 64 */ | |
228 | unsigned char *dma_buff; /* points to the beginning of the buffer */ | |
229 | unsigned char *end_dma_buff; /* points to the end of the buffer */ | |
230 | unsigned char *rx_dma_ptr; /* points to the next packet */ | |
231 | #endif | |
232 | }; | |
233 | ||
234 | /* Index to functions, as function prototypes. */ | |
235 | ||
236 | static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular); | |
237 | static int net_open(struct net_device *dev); | |
238 | static int net_send_packet(struct sk_buff *skb, struct net_device *dev); | |
239 | static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs); | |
240 | static void set_multicast_list(struct net_device *dev); | |
241 | static void net_timeout(struct net_device *dev); | |
242 | static void net_rx(struct net_device *dev); | |
243 | static int net_close(struct net_device *dev); | |
244 | static struct net_device_stats *net_get_stats(struct net_device *dev); | |
245 | static void reset_chip(struct net_device *dev); | |
246 | static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer); | |
247 | static int get_eeprom_cksum(int off, int len, int *buffer); | |
248 | static int set_mac_address(struct net_device *dev, void *addr); | |
249 | static void count_rx_errors(int status, struct net_local *lp); | |
250 | #if ALLOW_DMA | |
251 | static void get_dma_channel(struct net_device *dev); | |
252 | static void release_dma_buff(struct net_local *lp); | |
253 | #endif | |
254 | ||
255 | /* Example routines you must write ;->. */ | |
256 | #define tx_done(dev) 1 | |
257 | ||
258 | /* | |
259 | * Permit 'cs89x0_dma=N' in the kernel boot environment | |
260 | */ | |
261 | #if !defined(MODULE) && (ALLOW_DMA != 0) | |
262 | static int g_cs89x0_dma; | |
263 | ||
264 | static int __init dma_fn(char *str) | |
265 | { | |
266 | g_cs89x0_dma = simple_strtol(str,NULL,0); | |
267 | return 1; | |
268 | } | |
269 | ||
270 | __setup("cs89x0_dma=", dma_fn); | |
271 | #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */ | |
272 | ||
273 | #ifndef MODULE | |
274 | static int g_cs89x0_media__force; | |
275 | ||
276 | static int __init media_fn(char *str) | |
277 | { | |
278 | if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45; | |
279 | else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI; | |
280 | else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC; | |
281 | return 1; | |
282 | } | |
283 | ||
284 | __setup("cs89x0_media=", media_fn); | |
285 | ||
286 | \f | |
287 | /* Check for a network adaptor of this type, and return '0' iff one exists. | |
288 | If dev->base_addr == 0, probe all likely locations. | |
289 | If dev->base_addr == 1, always return failure. | |
290 | If dev->base_addr == 2, allocate space for the device and return success | |
291 | (detachable devices only). | |
292 | Return 0 on success. | |
293 | */ | |
294 | ||
295 | struct net_device * __init cs89x0_probe(int unit) | |
296 | { | |
297 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
298 | unsigned *port; | |
299 | int err = 0; | |
300 | int irq; | |
301 | int io; | |
302 | ||
303 | if (!dev) | |
304 | return ERR_PTR(-ENODEV); | |
305 | ||
306 | sprintf(dev->name, "eth%d", unit); | |
307 | netdev_boot_setup_check(dev); | |
308 | io = dev->base_addr; | |
309 | irq = dev->irq; | |
310 | ||
311 | if (net_debug) | |
312 | printk("cs89x0:cs89x0_probe(0x%x)\n", io); | |
313 | ||
314 | if (io > 0x1ff) { /* Check a single specified location. */ | |
315 | err = cs89x0_probe1(dev, io, 0); | |
316 | } else if (io != 0) { /* Don't probe at all. */ | |
317 | err = -ENXIO; | |
318 | } else { | |
319 | for (port = netcard_portlist; *port; port++) { | |
320 | if (cs89x0_probe1(dev, *port, 0) == 0) | |
321 | break; | |
322 | dev->irq = irq; | |
323 | } | |
324 | if (!*port) | |
325 | err = -ENODEV; | |
326 | } | |
327 | if (err) | |
328 | goto out; | |
1da177e4 | 329 | return dev; |
1da177e4 LT |
330 | out: |
331 | free_netdev(dev); | |
332 | printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n"); | |
333 | return ERR_PTR(err); | |
334 | } | |
335 | #endif | |
336 | ||
337 | static int | |
338 | readreg(struct net_device *dev, int portno) | |
339 | { | |
340 | outw(portno, dev->base_addr + ADD_PORT); | |
341 | return inw(dev->base_addr + DATA_PORT); | |
342 | } | |
343 | ||
344 | static void | |
345 | writereg(struct net_device *dev, int portno, int value) | |
346 | { | |
347 | outw(portno, dev->base_addr + ADD_PORT); | |
348 | outw(value, dev->base_addr + DATA_PORT); | |
349 | } | |
350 | ||
351 | static int | |
352 | readword(struct net_device *dev, int portno) | |
353 | { | |
354 | return inw(dev->base_addr + portno); | |
355 | } | |
356 | ||
357 | static void | |
358 | writeword(struct net_device *dev, int portno, int value) | |
359 | { | |
360 | outw(value, dev->base_addr + portno); | |
361 | } | |
362 | ||
363 | static int __init | |
364 | wait_eeprom_ready(struct net_device *dev) | |
365 | { | |
366 | int timeout = jiffies; | |
367 | /* check to see if the EEPROM is ready, a timeout is used - | |
368 | just in case EEPROM is ready when SI_BUSY in the | |
369 | PP_SelfST is clear */ | |
370 | while(readreg(dev, PP_SelfST) & SI_BUSY) | |
371 | if (jiffies - timeout >= 40) | |
372 | return -1; | |
373 | return 0; | |
374 | } | |
375 | ||
376 | static int __init | |
377 | get_eeprom_data(struct net_device *dev, int off, int len, int *buffer) | |
378 | { | |
379 | int i; | |
380 | ||
381 | if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len); | |
382 | for (i = 0; i < len; i++) { | |
383 | if (wait_eeprom_ready(dev) < 0) return -1; | |
384 | /* Now send the EEPROM read command and EEPROM location to read */ | |
385 | writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD); | |
386 | if (wait_eeprom_ready(dev) < 0) return -1; | |
387 | buffer[i] = readreg(dev, PP_EEData); | |
388 | if (net_debug > 3) printk("%04x ", buffer[i]); | |
389 | } | |
390 | if (net_debug > 3) printk("\n"); | |
391 | return 0; | |
392 | } | |
393 | ||
394 | static int __init | |
395 | get_eeprom_cksum(int off, int len, int *buffer) | |
396 | { | |
397 | int i, cksum; | |
398 | ||
399 | cksum = 0; | |
400 | for (i = 0; i < len; i++) | |
401 | cksum += buffer[i]; | |
402 | cksum &= 0xffff; | |
403 | if (cksum == 0) | |
404 | return 0; | |
405 | return -1; | |
406 | } | |
407 | ||
408 | /* This is the real probe routine. Linux has a history of friendly device | |
409 | probes on the ISA bus. A good device probes avoids doing writes, and | |
410 | verifies that the correct device exists and functions. | |
411 | Return 0 on success. | |
412 | */ | |
413 | ||
414 | static int __init | |
415 | cs89x0_probe1(struct net_device *dev, int ioaddr, int modular) | |
416 | { | |
417 | struct net_local *lp = netdev_priv(dev); | |
418 | static unsigned version_printed; | |
419 | int i; | |
01bdc033 | 420 | int tmp; |
1da177e4 LT |
421 | unsigned rev_type = 0; |
422 | int eeprom_buff[CHKSUM_LEN]; | |
423 | int retval; | |
424 | ||
425 | SET_MODULE_OWNER(dev); | |
426 | /* Initialize the device structure. */ | |
427 | if (!modular) { | |
428 | memset(lp, 0, sizeof(*lp)); | |
429 | spin_lock_init(&lp->lock); | |
430 | #ifndef MODULE | |
431 | #if ALLOW_DMA | |
432 | if (g_cs89x0_dma) { | |
433 | lp->use_dma = 1; | |
434 | lp->dma = g_cs89x0_dma; | |
435 | lp->dmasize = 16; /* Could make this an option... */ | |
436 | } | |
437 | #endif | |
438 | lp->force = g_cs89x0_media__force; | |
439 | #endif | |
440 | } | |
441 | ||
0dd3c781 | 442 | #ifdef CONFIG_ARCH_PNX0105 |
443 | initialize_ebi(); | |
444 | ||
445 | /* Map GPIO registers for the pins connected to the CS8900a. */ | |
446 | if (map_cirrus_gpio() < 0) | |
447 | return -ENODEV; | |
448 | ||
449 | reset_cirrus(); | |
450 | ||
451 | /* Map event-router registers. */ | |
452 | if (map_event_router() < 0) | |
453 | return -ENODEV; | |
454 | ||
455 | enable_cirrus_irq(); | |
456 | ||
457 | unmap_cirrus_gpio(); | |
458 | unmap_event_router(); | |
459 | ||
460 | dev->base_addr = ioaddr; | |
461 | ||
462 | for (i = 0 ; i < 3 ; i++) | |
463 | readreg(dev, 0); | |
464 | #endif | |
465 | ||
1da177e4 LT |
466 | /* Grab the region so we can find another board if autoIRQ fails. */ |
467 | /* WTF is going on here? */ | |
468 | if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) { | |
469 | printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n", | |
470 | DRV_NAME, ioaddr, NETCARD_IO_EXTENT); | |
471 | retval = -EBUSY; | |
472 | goto out1; | |
473 | } | |
474 | ||
475 | #ifdef CONFIG_SH_HICOSH4 | |
476 | /* truely reset the chip */ | |
477 | outw(0x0114, ioaddr + ADD_PORT); | |
478 | outw(0x0040, ioaddr + DATA_PORT); | |
479 | #endif | |
480 | ||
481 | /* if they give us an odd I/O address, then do ONE write to | |
482 | the address port, to get it back to address zero, where we | |
483 | expect to find the EISA signature word. An IO with a base of 0x3 | |
484 | will skip the test for the ADD_PORT. */ | |
485 | if (ioaddr & 1) { | |
486 | if (net_debug > 1) | |
487 | printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr); | |
488 | if ((ioaddr & 2) != 2) | |
489 | if ((inw((ioaddr & ~3)+ ADD_PORT) & ADD_MASK) != ADD_SIG) { | |
490 | printk(KERN_ERR "%s: bad signature 0x%x\n", | |
491 | dev->name, inw((ioaddr & ~3)+ ADD_PORT)); | |
492 | retval = -ENODEV; | |
493 | goto out2; | |
494 | } | |
495 | } | |
01bdc033 DV |
496 | printk(KERN_DEBUG "PP_addr at %x: 0x%x\n", |
497 | ioaddr + ADD_PORT, inw(ioaddr + ADD_PORT)); | |
1da177e4 LT |
498 | |
499 | ioaddr &= ~3; | |
500 | outw(PP_ChipID, ioaddr + ADD_PORT); | |
501 | ||
01bdc033 DV |
502 | tmp = inw(ioaddr + DATA_PORT); |
503 | if (tmp != CHIP_EISA_ID_SIG) { | |
504 | printk(KERN_DEBUG "%s: incorrect signature at %x: 0x%x!=" | |
505 | CHIP_EISA_ID_SIG_STR "\n", | |
506 | dev->name, ioaddr + DATA_PORT, tmp); | |
1da177e4 LT |
507 | retval = -ENODEV; |
508 | goto out2; | |
509 | } | |
510 | ||
511 | /* Fill in the 'dev' fields. */ | |
512 | dev->base_addr = ioaddr; | |
513 | ||
514 | /* get the chip type */ | |
515 | rev_type = readreg(dev, PRODUCT_ID_ADD); | |
516 | lp->chip_type = rev_type &~ REVISON_BITS; | |
517 | lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; | |
518 | ||
519 | /* Check the chip type and revision in order to set the correct send command | |
520 | CS8920 revision C and CS8900 revision F can use the faster send. */ | |
521 | lp->send_cmd = TX_AFTER_381; | |
522 | if (lp->chip_type == CS8900 && lp->chip_revision >= 'F') | |
523 | lp->send_cmd = TX_NOW; | |
524 | if (lp->chip_type != CS8900 && lp->chip_revision >= 'C') | |
525 | lp->send_cmd = TX_NOW; | |
526 | ||
527 | if (net_debug && version_printed++ == 0) | |
528 | printk(version); | |
529 | ||
530 | printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ", | |
531 | dev->name, | |
532 | lp->chip_type==CS8900?'0':'2', | |
533 | lp->chip_type==CS8920M?"M":"", | |
534 | lp->chip_revision, | |
535 | dev->base_addr); | |
536 | ||
537 | reset_chip(dev); | |
538 | ||
539 | /* Here we read the current configuration of the chip. If there | |
540 | is no Extended EEPROM then the idea is to not disturb the chip | |
541 | configuration, it should have been correctly setup by automatic | |
542 | EEPROM read on reset. So, if the chip says it read the EEPROM | |
543 | the driver will always do *something* instead of complain that | |
544 | adapter_cnf is 0. */ | |
545 | ||
546 | #ifdef CONFIG_SH_HICOSH4 | |
547 | if (1) { | |
548 | /* For the HiCO.SH4 board, things are different: we don't | |
549 | have EEPROM, but there is some data in flash, so we go | |
550 | get it there directly (MAC). */ | |
551 | __u16 *confd; | |
552 | short cnt; | |
553 | if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff) | |
554 | == 0x006c3000) { | |
555 | confd = (__u16*) 0xa0013fc0; | |
556 | } else { | |
557 | confd = (__u16*) 0xa001ffc0; | |
558 | } | |
559 | cnt = (*confd++ & 0x00ff) >> 1; | |
560 | while (--cnt > 0) { | |
561 | __u16 j = *confd++; | |
562 | ||
563 | switch (j & 0x0fff) { | |
564 | case PP_IA: | |
565 | for (i = 0; i < ETH_ALEN/2; i++) { | |
566 | dev->dev_addr[i*2] = confd[i] & 0xFF; | |
567 | dev->dev_addr[i*2+1] = confd[i] >> 8; | |
568 | } | |
569 | break; | |
570 | } | |
571 | j = (j >> 12) + 1; | |
572 | confd += j; | |
573 | cnt -= j; | |
574 | } | |
575 | } else | |
576 | #endif | |
577 | ||
578 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) == | |
579 | (EEPROM_OK|EEPROM_PRESENT)) { | |
580 | /* Load the MAC. */ | |
581 | for (i=0; i < ETH_ALEN/2; i++) { | |
582 | unsigned int Addr; | |
583 | Addr = readreg(dev, PP_IA+i*2); | |
584 | dev->dev_addr[i*2] = Addr & 0xFF; | |
585 | dev->dev_addr[i*2+1] = Addr >> 8; | |
586 | } | |
587 | ||
588 | /* Load the Adapter Configuration. | |
589 | Note: Barring any more specific information from some | |
590 | other source (ie EEPROM+Schematics), we would not know | |
591 | how to operate a 10Base2 interface on the AUI port. | |
592 | However, since we do read the status of HCB1 and use | |
593 | settings that always result in calls to control_dc_dc(dev,0) | |
594 | a BNC interface should work if the enable pin | |
595 | (dc/dc converter) is on HCB1. It will be called AUI | |
596 | however. */ | |
597 | ||
598 | lp->adapter_cnf = 0; | |
599 | i = readreg(dev, PP_LineCTL); | |
600 | /* Preserve the setting of the HCB1 pin. */ | |
601 | if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL)) | |
602 | lp->adapter_cnf |= A_CNF_DC_DC_POLARITY; | |
603 | /* Save the sqelch bit */ | |
604 | if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH) | |
605 | lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH; | |
606 | /* Check if the card is in 10Base-t only mode */ | |
607 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0) | |
608 | lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T; | |
609 | /* Check if the card is in AUI only mode */ | |
610 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY) | |
611 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI; | |
612 | /* Check if the card is in Auto mode. */ | |
613 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET) | |
614 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T | | |
615 | A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO; | |
616 | ||
617 | if (net_debug > 1) | |
618 | printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n", | |
619 | dev->name, i, lp->adapter_cnf); | |
620 | ||
621 | /* IRQ. Other chips already probe, see below. */ | |
622 | if (lp->chip_type == CS8900) | |
623 | lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK; | |
624 | ||
625 | printk( "[Cirrus EEPROM] "); | |
626 | } | |
627 | ||
628 | printk("\n"); | |
629 | ||
630 | /* First check to see if an EEPROM is attached. */ | |
631 | #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */ | |
632 | if (1) { | |
633 | printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n"); | |
634 | } else | |
635 | #endif | |
636 | if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0) | |
637 | printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n"); | |
638 | else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { | |
639 | printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n"); | |
640 | } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { | |
641 | /* Check if the chip was able to read its own configuration starting | |
642 | at 0 in the EEPROM*/ | |
643 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) != | |
644 | (EEPROM_OK|EEPROM_PRESENT)) | |
645 | printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n"); | |
646 | ||
647 | } else { | |
648 | /* This reads an extended EEPROM that is not documented | |
649 | in the CS8900 datasheet. */ | |
650 | ||
651 | /* get transmission control word but keep the autonegotiation bits */ | |
652 | if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2]; | |
653 | /* Store adapter configuration */ | |
654 | if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2]; | |
655 | /* Store ISA configuration */ | |
656 | lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2]; | |
657 | dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8; | |
658 | ||
659 | /* eeprom_buff has 32-bit ints, so we can't just memcpy it */ | |
660 | /* store the initial memory base address */ | |
661 | for (i = 0; i < ETH_ALEN/2; i++) { | |
662 | dev->dev_addr[i*2] = eeprom_buff[i]; | |
663 | dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8; | |
664 | } | |
665 | if (net_debug > 1) | |
666 | printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n", | |
667 | dev->name, lp->adapter_cnf); | |
668 | } | |
669 | ||
670 | /* allow them to force multiple transceivers. If they force multiple, autosense */ | |
671 | { | |
672 | int count = 0; | |
673 | if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; } | |
674 | if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; } | |
675 | if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; } | |
676 | if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; } | |
677 | else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; } | |
678 | else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; } | |
679 | else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; } | |
680 | } | |
681 | ||
682 | if (net_debug > 1) | |
683 | printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n", | |
684 | dev->name, lp->force, lp->adapter_cnf); | |
685 | ||
686 | /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */ | |
687 | ||
688 | /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */ | |
689 | ||
690 | /* FIXME: we don't set the Ethernet address on the command line. Use | |
691 | ifconfig IFACE hw ether AABBCCDDEEFF */ | |
692 | ||
693 | printk(KERN_INFO "cs89x0 media %s%s%s", | |
694 | (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"", | |
695 | (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"", | |
696 | (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":""); | |
697 | ||
698 | lp->irq_map = 0xffff; | |
699 | ||
700 | /* If this is a CS8900 then no pnp soft */ | |
701 | if (lp->chip_type != CS8900 && | |
702 | /* Check if the ISA IRQ has been set */ | |
703 | (i = readreg(dev, PP_CS8920_ISAINT) & 0xff, | |
704 | (i != 0 && i < CS8920_NO_INTS))) { | |
705 | if (!dev->irq) | |
706 | dev->irq = i; | |
707 | } else { | |
708 | i = lp->isa_config & INT_NO_MASK; | |
709 | if (lp->chip_type == CS8900) { | |
0dd3c781 | 710 | #if defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX0105) |
1da177e4 LT |
711 | i = cs8900_irq_map[0]; |
712 | #else | |
713 | /* Translate the IRQ using the IRQ mapping table. */ | |
714 | if (i >= sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0])) | |
715 | printk("\ncs89x0: invalid ISA interrupt number %d\n", i); | |
716 | else | |
717 | i = cs8900_irq_map[i]; | |
718 | ||
719 | lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */ | |
720 | } else { | |
721 | int irq_map_buff[IRQ_MAP_LEN/2]; | |
722 | ||
723 | if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA, | |
724 | IRQ_MAP_LEN/2, | |
725 | irq_map_buff) >= 0) { | |
726 | if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT) | |
727 | lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8); | |
728 | } | |
729 | #endif | |
730 | } | |
731 | if (!dev->irq) | |
732 | dev->irq = i; | |
733 | } | |
734 | ||
735 | printk(" IRQ %d", dev->irq); | |
736 | ||
737 | #if ALLOW_DMA | |
738 | if (lp->use_dma) { | |
739 | get_dma_channel(dev); | |
740 | printk(", DMA %d", dev->dma); | |
741 | } | |
742 | else | |
743 | #endif | |
744 | { | |
745 | printk(", programmed I/O"); | |
746 | } | |
747 | ||
748 | /* print the ethernet address. */ | |
749 | printk(", MAC"); | |
750 | for (i = 0; i < ETH_ALEN; i++) | |
751 | { | |
752 | printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]); | |
753 | } | |
754 | ||
755 | dev->open = net_open; | |
756 | dev->stop = net_close; | |
757 | dev->tx_timeout = net_timeout; | |
758 | dev->watchdog_timeo = HZ; | |
759 | dev->hard_start_xmit = net_send_packet; | |
760 | dev->get_stats = net_get_stats; | |
761 | dev->set_multicast_list = set_multicast_list; | |
762 | dev->set_mac_address = set_mac_address; | |
763 | ||
764 | printk("\n"); | |
765 | if (net_debug) | |
766 | printk("cs89x0_probe1() successful\n"); | |
b1fc5505 | 767 | |
768 | retval = register_netdev(dev); | |
769 | if (retval) | |
770 | goto out3; | |
1da177e4 | 771 | return 0; |
b1fc5505 | 772 | out3: |
773 | outw(PP_ChipID, dev->base_addr + ADD_PORT); | |
1da177e4 LT |
774 | out2: |
775 | release_region(ioaddr & ~3, NETCARD_IO_EXTENT); | |
776 | out1: | |
777 | return retval; | |
778 | } | |
779 | ||
780 | \f | |
781 | /********************************* | |
782 | * This page contains DMA routines | |
783 | **********************************/ | |
784 | ||
785 | #if ALLOW_DMA | |
786 | ||
787 | #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17) | |
788 | ||
789 | static void | |
790 | get_dma_channel(struct net_device *dev) | |
791 | { | |
792 | struct net_local *lp = netdev_priv(dev); | |
793 | ||
794 | if (lp->dma) { | |
795 | dev->dma = lp->dma; | |
796 | lp->isa_config |= ISA_RxDMA; | |
797 | } else { | |
798 | if ((lp->isa_config & ANY_ISA_DMA) == 0) | |
799 | return; | |
800 | dev->dma = lp->isa_config & DMA_NO_MASK; | |
801 | if (lp->chip_type == CS8900) | |
802 | dev->dma += 5; | |
803 | if (dev->dma < 5 || dev->dma > 7) { | |
804 | lp->isa_config &= ~ANY_ISA_DMA; | |
805 | return; | |
806 | } | |
807 | } | |
808 | return; | |
809 | } | |
810 | ||
811 | static void | |
812 | write_dma(struct net_device *dev, int chip_type, int dma) | |
813 | { | |
814 | struct net_local *lp = netdev_priv(dev); | |
815 | if ((lp->isa_config & ANY_ISA_DMA) == 0) | |
816 | return; | |
817 | if (chip_type == CS8900) { | |
818 | writereg(dev, PP_CS8900_ISADMA, dma-5); | |
819 | } else { | |
820 | writereg(dev, PP_CS8920_ISADMA, dma); | |
821 | } | |
822 | } | |
823 | ||
824 | static void | |
825 | set_dma_cfg(struct net_device *dev) | |
826 | { | |
827 | struct net_local *lp = netdev_priv(dev); | |
828 | ||
829 | if (lp->use_dma) { | |
830 | if ((lp->isa_config & ANY_ISA_DMA) == 0) { | |
831 | if (net_debug > 3) | |
832 | printk("set_dma_cfg(): no DMA\n"); | |
833 | return; | |
834 | } | |
835 | if (lp->isa_config & ISA_RxDMA) { | |
836 | lp->curr_rx_cfg |= RX_DMA_ONLY; | |
837 | if (net_debug > 3) | |
838 | printk("set_dma_cfg(): RX_DMA_ONLY\n"); | |
839 | } else { | |
840 | lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */ | |
841 | if (net_debug > 3) | |
842 | printk("set_dma_cfg(): AUTO_RX_DMA\n"); | |
843 | } | |
844 | } | |
845 | } | |
846 | ||
847 | static int | |
848 | dma_bufcfg(struct net_device *dev) | |
849 | { | |
850 | struct net_local *lp = netdev_priv(dev); | |
851 | if (lp->use_dma) | |
852 | return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0; | |
853 | else | |
854 | return 0; | |
855 | } | |
856 | ||
857 | static int | |
858 | dma_busctl(struct net_device *dev) | |
859 | { | |
860 | int retval = 0; | |
861 | struct net_local *lp = netdev_priv(dev); | |
862 | if (lp->use_dma) { | |
863 | if (lp->isa_config & ANY_ISA_DMA) | |
864 | retval |= RESET_RX_DMA; /* Reset the DMA pointer */ | |
865 | if (lp->isa_config & DMA_BURST) | |
866 | retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */ | |
867 | if (lp->dmasize == 64) | |
868 | retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */ | |
869 | retval |= MEMORY_ON; /* we need memory enabled to use DMA. */ | |
870 | } | |
871 | return retval; | |
872 | } | |
873 | ||
874 | static void | |
875 | dma_rx(struct net_device *dev) | |
876 | { | |
877 | struct net_local *lp = netdev_priv(dev); | |
878 | struct sk_buff *skb; | |
879 | int status, length; | |
880 | unsigned char *bp = lp->rx_dma_ptr; | |
881 | ||
882 | status = bp[0] + (bp[1]<<8); | |
883 | length = bp[2] + (bp[3]<<8); | |
884 | bp += 4; | |
885 | if (net_debug > 5) { | |
886 | printk( "%s: receiving DMA packet at %lx, status %x, length %x\n", | |
887 | dev->name, (unsigned long)bp, status, length); | |
888 | } | |
889 | if ((status & RX_OK) == 0) { | |
890 | count_rx_errors(status, lp); | |
891 | goto skip_this_frame; | |
892 | } | |
893 | ||
894 | /* Malloc up new buffer. */ | |
895 | skb = dev_alloc_skb(length + 2); | |
896 | if (skb == NULL) { | |
897 | if (net_debug) /* I don't think we want to do this to a stressed system */ | |
898 | printk("%s: Memory squeeze, dropping packet.\n", dev->name); | |
899 | lp->stats.rx_dropped++; | |
900 | ||
901 | /* AKPM: advance bp to the next frame */ | |
902 | skip_this_frame: | |
903 | bp += (length + 3) & ~3; | |
904 | if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024; | |
905 | lp->rx_dma_ptr = bp; | |
906 | return; | |
907 | } | |
908 | skb_reserve(skb, 2); /* longword align L3 header */ | |
909 | skb->dev = dev; | |
910 | ||
911 | if (bp + length > lp->end_dma_buff) { | |
912 | int semi_cnt = lp->end_dma_buff - bp; | |
913 | memcpy(skb_put(skb,semi_cnt), bp, semi_cnt); | |
914 | memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff, | |
915 | length - semi_cnt); | |
916 | } else { | |
917 | memcpy(skb_put(skb,length), bp, length); | |
918 | } | |
919 | bp += (length + 3) & ~3; | |
920 | if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024; | |
921 | lp->rx_dma_ptr = bp; | |
922 | ||
923 | if (net_debug > 3) { | |
924 | printk( "%s: received %d byte DMA packet of type %x\n", | |
925 | dev->name, length, | |
926 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); | |
927 | } | |
928 | skb->protocol=eth_type_trans(skb,dev); | |
929 | netif_rx(skb); | |
930 | dev->last_rx = jiffies; | |
931 | lp->stats.rx_packets++; | |
932 | lp->stats.rx_bytes += length; | |
933 | } | |
934 | ||
935 | #endif /* ALLOW_DMA */ | |
936 | ||
937 | void __init reset_chip(struct net_device *dev) | |
938 | { | |
939 | #ifndef CONFIG_ARCH_IXDP2X01 | |
940 | struct net_local *lp = netdev_priv(dev); | |
941 | int ioaddr = dev->base_addr; | |
942 | #endif | |
943 | int reset_start_time; | |
944 | ||
945 | writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET); | |
946 | ||
947 | /* wait 30 ms */ | |
948 | msleep(30); | |
949 | ||
950 | #ifndef CONFIG_ARCH_IXDP2X01 | |
951 | if (lp->chip_type != CS8900) { | |
952 | /* Hardware problem requires PNP registers to be reconfigured after a reset */ | |
953 | outw(PP_CS8920_ISAINT, ioaddr + ADD_PORT); | |
954 | outb(dev->irq, ioaddr + DATA_PORT); | |
955 | outb(0, ioaddr + DATA_PORT + 1); | |
956 | ||
957 | outw(PP_CS8920_ISAMemB, ioaddr + ADD_PORT); | |
958 | outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT); | |
959 | outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1); | |
960 | } | |
961 | #endif /* IXDP2x01 */ | |
962 | ||
963 | /* Wait until the chip is reset */ | |
964 | reset_start_time = jiffies; | |
965 | while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2) | |
966 | ; | |
967 | } | |
968 | ||
969 | \f | |
970 | static void | |
971 | control_dc_dc(struct net_device *dev, int on_not_off) | |
972 | { | |
973 | struct net_local *lp = netdev_priv(dev); | |
974 | unsigned int selfcontrol; | |
975 | int timenow = jiffies; | |
976 | /* control the DC to DC convertor in the SelfControl register. | |
977 | Note: This is hooked up to a general purpose pin, might not | |
978 | always be a DC to DC convertor. */ | |
979 | ||
980 | selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */ | |
981 | if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off) | |
982 | selfcontrol |= HCB1; | |
983 | else | |
984 | selfcontrol &= ~HCB1; | |
985 | writereg(dev, PP_SelfCTL, selfcontrol); | |
986 | ||
987 | /* Wait for the DC/DC converter to power up - 500ms */ | |
988 | while (jiffies - timenow < HZ) | |
989 | ; | |
990 | } | |
991 | ||
992 | #define DETECTED_NONE 0 | |
993 | #define DETECTED_RJ45H 1 | |
994 | #define DETECTED_RJ45F 2 | |
995 | #define DETECTED_AUI 3 | |
996 | #define DETECTED_BNC 4 | |
997 | ||
998 | static int | |
999 | detect_tp(struct net_device *dev) | |
1000 | { | |
1001 | struct net_local *lp = netdev_priv(dev); | |
1002 | int timenow = jiffies; | |
1003 | int fdx; | |
1004 | ||
1005 | if (net_debug > 1) printk("%s: Attempting TP\n", dev->name); | |
1006 | ||
1007 | /* If connected to another full duplex capable 10-Base-T card the link pulses | |
1008 | seem to be lost when the auto detect bit in the LineCTL is set. | |
1009 | To overcome this the auto detect bit will be cleared whilst testing the | |
1010 | 10-Base-T interface. This would not be necessary for the sparrow chip but | |
1011 | is simpler to do it anyway. */ | |
1012 | writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY); | |
1013 | control_dc_dc(dev, 0); | |
1014 | ||
1015 | /* Delay for the hardware to work out if the TP cable is present - 150ms */ | |
1016 | for (timenow = jiffies; jiffies - timenow < 15; ) | |
1017 | ; | |
1018 | if ((readreg(dev, PP_LineST) & LINK_OK) == 0) | |
1019 | return DETECTED_NONE; | |
1020 | ||
1021 | if (lp->chip_type == CS8900) { | |
1022 | switch (lp->force & 0xf0) { | |
1023 | #if 0 | |
1024 | case FORCE_AUTO: | |
1025 | printk("%s: cs8900 doesn't autonegotiate\n",dev->name); | |
1026 | return DETECTED_NONE; | |
1027 | #endif | |
1028 | /* CS8900 doesn't support AUTO, change to HALF*/ | |
1029 | case FORCE_AUTO: | |
1030 | lp->force &= ~FORCE_AUTO; | |
1031 | lp->force |= FORCE_HALF; | |
1032 | break; | |
1033 | case FORCE_HALF: | |
1034 | break; | |
1035 | case FORCE_FULL: | |
1036 | writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900); | |
1037 | break; | |
1038 | } | |
1039 | fdx = readreg(dev, PP_TestCTL) & FDX_8900; | |
1040 | } else { | |
1041 | switch (lp->force & 0xf0) { | |
1042 | case FORCE_AUTO: | |
1043 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; | |
1044 | break; | |
1045 | case FORCE_HALF: | |
1046 | lp->auto_neg_cnf = 0; | |
1047 | break; | |
1048 | case FORCE_FULL: | |
1049 | lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX; | |
1050 | break; | |
1051 | } | |
1052 | ||
1053 | writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK); | |
1054 | ||
1055 | if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) { | |
1056 | printk(KERN_INFO "%s: negotiating duplex...\n",dev->name); | |
1057 | while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) { | |
1058 | if (jiffies - timenow > 4000) { | |
1059 | printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n"); | |
1060 | break; | |
1061 | } | |
1062 | } | |
1063 | } | |
1064 | fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE; | |
1065 | } | |
1066 | if (fdx) | |
1067 | return DETECTED_RJ45F; | |
1068 | else | |
1069 | return DETECTED_RJ45H; | |
1070 | } | |
1071 | ||
1072 | /* send a test packet - return true if carrier bits are ok */ | |
1073 | static int | |
1074 | send_test_pkt(struct net_device *dev) | |
1075 | { | |
1076 | char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0, | |
1077 | 0, 46, /* A 46 in network order */ | |
1078 | 0, 0, /* DSAP=0 & SSAP=0 fields */ | |
1079 | 0xf3, 0 /* Control (Test Req + P bit set) */ }; | |
1080 | long timenow = jiffies; | |
1081 | ||
1082 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON); | |
1083 | ||
1084 | memcpy(test_packet, dev->dev_addr, ETH_ALEN); | |
1085 | memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN); | |
1086 | ||
1087 | writeword(dev, TX_CMD_PORT, TX_AFTER_ALL); | |
1088 | writeword(dev, TX_LEN_PORT, ETH_ZLEN); | |
1089 | ||
1090 | /* Test to see if the chip has allocated memory for the packet */ | |
1091 | while (jiffies - timenow < 5) | |
1092 | if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW) | |
1093 | break; | |
1094 | if (jiffies - timenow >= 5) | |
1095 | return 0; /* this shouldn't happen */ | |
1096 | ||
1097 | /* Write the contents of the packet */ | |
1098 | outsw(dev->base_addr + TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1); | |
1099 | ||
1100 | if (net_debug > 1) printk("Sending test packet "); | |
1101 | /* wait a couple of jiffies for packet to be received */ | |
1102 | for (timenow = jiffies; jiffies - timenow < 3; ) | |
1103 | ; | |
1104 | if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { | |
1105 | if (net_debug > 1) printk("succeeded\n"); | |
1106 | return 1; | |
1107 | } | |
1108 | if (net_debug > 1) printk("failed\n"); | |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | ||
1113 | static int | |
1114 | detect_aui(struct net_device *dev) | |
1115 | { | |
1116 | struct net_local *lp = netdev_priv(dev); | |
1117 | ||
1118 | if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name); | |
1119 | control_dc_dc(dev, 0); | |
1120 | ||
1121 | writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); | |
1122 | ||
1123 | if (send_test_pkt(dev)) | |
1124 | return DETECTED_AUI; | |
1125 | else | |
1126 | return DETECTED_NONE; | |
1127 | } | |
1128 | ||
1129 | static int | |
1130 | detect_bnc(struct net_device *dev) | |
1131 | { | |
1132 | struct net_local *lp = netdev_priv(dev); | |
1133 | ||
1134 | if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name); | |
1135 | control_dc_dc(dev, 1); | |
1136 | ||
1137 | writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); | |
1138 | ||
1139 | if (send_test_pkt(dev)) | |
1140 | return DETECTED_BNC; | |
1141 | else | |
1142 | return DETECTED_NONE; | |
1143 | } | |
1144 | ||
1145 | \f | |
1146 | static void | |
1147 | write_irq(struct net_device *dev, int chip_type, int irq) | |
1148 | { | |
1149 | int i; | |
1150 | ||
1151 | if (chip_type == CS8900) { | |
1152 | /* Search the mapping table for the corresponding IRQ pin. */ | |
1153 | for (i = 0; i != sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]); i++) | |
1154 | if (cs8900_irq_map[i] == irq) | |
1155 | break; | |
1156 | /* Not found */ | |
1157 | if (i == sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0])) | |
1158 | i = 3; | |
1159 | writereg(dev, PP_CS8900_ISAINT, i); | |
1160 | } else { | |
1161 | writereg(dev, PP_CS8920_ISAINT, irq); | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | /* Open/initialize the board. This is called (in the current kernel) | |
1166 | sometime after booting when the 'ifconfig' program is run. | |
1167 | ||
1168 | This routine should set everything up anew at each open, even | |
1169 | registers that "should" only need to be set once at boot, so that | |
1170 | there is non-reboot way to recover if something goes wrong. | |
1171 | */ | |
1172 | ||
1173 | /* AKPM: do we need to do any locking here? */ | |
1174 | ||
1175 | static int | |
1176 | net_open(struct net_device *dev) | |
1177 | { | |
1178 | struct net_local *lp = netdev_priv(dev); | |
1179 | int result = 0; | |
1180 | int i; | |
1181 | int ret; | |
1182 | ||
0dd3c781 | 1183 | #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX0105) /* uses irq#1, so this won't work */ |
1da177e4 LT |
1184 | if (dev->irq < 2) { |
1185 | /* Allow interrupts to be generated by the chip */ | |
1186 | /* Cirrus' release had this: */ | |
1187 | #if 0 | |
1188 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); | |
1189 | #endif | |
1190 | /* And 2.3.47 had this: */ | |
1191 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); | |
1192 | ||
1193 | for (i = 2; i < CS8920_NO_INTS; i++) { | |
1194 | if ((1 << i) & lp->irq_map) { | |
1195 | if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) { | |
1196 | dev->irq = i; | |
1197 | write_irq(dev, lp->chip_type, i); | |
1198 | /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */ | |
1199 | break; | |
1200 | } | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | if (i >= CS8920_NO_INTS) { | |
1205 | writereg(dev, PP_BusCTL, 0); /* disable interrupts. */ | |
1206 | printk(KERN_ERR "cs89x0: can't get an interrupt\n"); | |
1207 | ret = -EAGAIN; | |
1208 | goto bad_out; | |
1209 | } | |
1210 | } | |
1211 | else | |
1212 | #endif | |
1213 | { | |
0dd3c781 | 1214 | #if !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX0105) |
1da177e4 LT |
1215 | if (((1 << dev->irq) & lp->irq_map) == 0) { |
1216 | printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n", | |
1217 | dev->name, dev->irq, lp->irq_map); | |
1218 | ret = -EAGAIN; | |
1219 | goto bad_out; | |
1220 | } | |
1221 | #endif | |
1222 | /* FIXME: Cirrus' release had this: */ | |
1223 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); | |
1224 | /* And 2.3.47 had this: */ | |
1225 | #if 0 | |
1226 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); | |
1227 | #endif | |
1228 | write_irq(dev, lp->chip_type, dev->irq); | |
1229 | ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev); | |
1230 | if (ret) { | |
1231 | if (net_debug) | |
1232 | printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq); | |
1233 | goto bad_out; | |
1234 | } | |
1235 | } | |
1236 | ||
1237 | #if ALLOW_DMA | |
1238 | if (lp->use_dma) { | |
1239 | if (lp->isa_config & ANY_ISA_DMA) { | |
1240 | unsigned long flags; | |
1241 | lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL, | |
1242 | get_order(lp->dmasize * 1024)); | |
1243 | ||
1244 | if (!lp->dma_buff) { | |
1245 | printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize); | |
1246 | goto release_irq; | |
1247 | } | |
1248 | if (net_debug > 1) { | |
1249 | printk( "%s: dma %lx %lx\n", | |
1250 | dev->name, | |
1251 | (unsigned long)lp->dma_buff, | |
1252 | (unsigned long)isa_virt_to_bus(lp->dma_buff)); | |
1253 | } | |
1254 | if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS || | |
1255 | !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) { | |
1256 | printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name); | |
1257 | goto release_irq; | |
1258 | } | |
1259 | memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */ | |
1260 | if (request_dma(dev->dma, dev->name)) { | |
1261 | printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma); | |
1262 | goto release_irq; | |
1263 | } | |
1264 | write_dma(dev, lp->chip_type, dev->dma); | |
1265 | lp->rx_dma_ptr = lp->dma_buff; | |
1266 | lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024; | |
1267 | spin_lock_irqsave(&lp->lock, flags); | |
1268 | disable_dma(dev->dma); | |
1269 | clear_dma_ff(dev->dma); | |
1270 | set_dma_mode(dev->dma, 0x14); /* auto_init as well */ | |
1271 | set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff)); | |
1272 | set_dma_count(dev->dma, lp->dmasize*1024); | |
1273 | enable_dma(dev->dma); | |
1274 | spin_unlock_irqrestore(&lp->lock, flags); | |
1275 | } | |
1276 | } | |
1277 | #endif /* ALLOW_DMA */ | |
1278 | ||
1279 | /* set the Ethernet address */ | |
1280 | for (i=0; i < ETH_ALEN/2; i++) | |
1281 | writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); | |
1282 | ||
1283 | /* while we're testing the interface, leave interrupts disabled */ | |
1284 | writereg(dev, PP_BusCTL, MEMORY_ON); | |
1285 | ||
1286 | /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */ | |
1287 | if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH)) | |
1288 | lp->linectl = LOW_RX_SQUELCH; | |
1289 | else | |
1290 | lp->linectl = 0; | |
1291 | ||
1292 | /* check to make sure that they have the "right" hardware available */ | |
1293 | switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { | |
1294 | case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break; | |
1295 | case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break; | |
1296 | case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break; | |
1297 | default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2); | |
1298 | } | |
0dd3c781 | 1299 | #ifdef CONFIG_ARCH_PNX0105 |
1300 | result = A_CNF_10B_T; | |
1301 | #endif | |
1da177e4 LT |
1302 | if (!result) { |
1303 | printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name); | |
1304 | release_irq: | |
1305 | #if ALLOW_DMA | |
1306 | release_dma_buff(lp); | |
1307 | #endif | |
1308 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON)); | |
1309 | free_irq(dev->irq, dev); | |
1310 | ret = -EAGAIN; | |
1311 | goto bad_out; | |
1312 | } | |
1313 | ||
1314 | /* set the hardware to the configured choice */ | |
1315 | switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { | |
1316 | case A_CNF_MEDIA_10B_T: | |
1317 | result = detect_tp(dev); | |
1318 | if (result==DETECTED_NONE) { | |
1319 | printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name); | |
1320 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ | |
1321 | result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */ | |
1322 | } | |
1323 | break; | |
1324 | case A_CNF_MEDIA_AUI: | |
1325 | result = detect_aui(dev); | |
1326 | if (result==DETECTED_NONE) { | |
1327 | printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name); | |
1328 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ | |
1329 | result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */ | |
1330 | } | |
1331 | break; | |
1332 | case A_CNF_MEDIA_10B_2: | |
1333 | result = detect_bnc(dev); | |
1334 | if (result==DETECTED_NONE) { | |
1335 | printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name); | |
1336 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ | |
1337 | result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */ | |
1338 | } | |
1339 | break; | |
1340 | case A_CNF_MEDIA_AUTO: | |
1341 | writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET); | |
1342 | if (lp->adapter_cnf & A_CNF_10B_T) | |
1343 | if ((result = detect_tp(dev)) != DETECTED_NONE) | |
1344 | break; | |
1345 | if (lp->adapter_cnf & A_CNF_AUI) | |
1346 | if ((result = detect_aui(dev)) != DETECTED_NONE) | |
1347 | break; | |
1348 | if (lp->adapter_cnf & A_CNF_10B_2) | |
1349 | if ((result = detect_bnc(dev)) != DETECTED_NONE) | |
1350 | break; | |
1351 | printk(KERN_ERR "%s: no media detected\n", dev->name); | |
1352 | goto release_irq; | |
1353 | } | |
1354 | switch(result) { | |
1355 | case DETECTED_NONE: | |
1356 | printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name); | |
1357 | goto release_irq; | |
1358 | case DETECTED_RJ45H: | |
1359 | printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name); | |
1360 | break; | |
1361 | case DETECTED_RJ45F: | |
1362 | printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name); | |
1363 | break; | |
1364 | case DETECTED_AUI: | |
1365 | printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name); | |
1366 | break; | |
1367 | case DETECTED_BNC: | |
1368 | printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name); | |
1369 | break; | |
1370 | } | |
1371 | ||
1372 | /* Turn on both receive and transmit operations */ | |
1373 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); | |
1374 | ||
1375 | /* Receive only error free packets addressed to this card */ | |
1376 | lp->rx_mode = 0; | |
1377 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT); | |
1378 | ||
1379 | lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL; | |
1380 | ||
1381 | if (lp->isa_config & STREAM_TRANSFER) | |
1382 | lp->curr_rx_cfg |= RX_STREAM_ENBL; | |
1383 | #if ALLOW_DMA | |
1384 | set_dma_cfg(dev); | |
1385 | #endif | |
1386 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg); | |
1387 | ||
1388 | writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL | | |
1389 | TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL); | |
1390 | ||
1391 | writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL | | |
1392 | #if ALLOW_DMA | |
1393 | dma_bufcfg(dev) | | |
1394 | #endif | |
1395 | TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL); | |
1396 | ||
1397 | /* now that we've got our act together, enable everything */ | |
1398 | writereg(dev, PP_BusCTL, ENABLE_IRQ | |
1399 | | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */ | |
1400 | #if ALLOW_DMA | |
1401 | | dma_busctl(dev) | |
1402 | #endif | |
1403 | ); | |
1404 | netif_start_queue(dev); | |
1405 | if (net_debug > 1) | |
1406 | printk("cs89x0: net_open() succeeded\n"); | |
1407 | return 0; | |
1408 | bad_out: | |
1409 | return ret; | |
1410 | } | |
1411 | ||
1412 | static void net_timeout(struct net_device *dev) | |
1413 | { | |
1414 | /* If we get here, some higher level has decided we are broken. | |
1415 | There should really be a "kick me" function call instead. */ | |
1416 | if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name, | |
1417 | tx_done(dev) ? "IRQ conflict ?" : "network cable problem"); | |
1418 | /* Try to restart the adaptor. */ | |
1419 | netif_wake_queue(dev); | |
1420 | } | |
1421 | ||
1422 | static int net_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1423 | { | |
1424 | struct net_local *lp = netdev_priv(dev); | |
1425 | ||
1426 | if (net_debug > 3) { | |
1427 | printk("%s: sent %d byte packet of type %x\n", | |
1428 | dev->name, skb->len, | |
1429 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); | |
1430 | } | |
1431 | ||
1432 | /* keep the upload from being interrupted, since we | |
1433 | ask the chip to start transmitting before the | |
1434 | whole packet has been completely uploaded. */ | |
1435 | ||
1436 | spin_lock_irq(&lp->lock); | |
1437 | netif_stop_queue(dev); | |
1438 | ||
1439 | /* initiate a transmit sequence */ | |
1440 | writeword(dev, TX_CMD_PORT, lp->send_cmd); | |
1441 | writeword(dev, TX_LEN_PORT, skb->len); | |
1442 | ||
1443 | /* Test to see if the chip has allocated memory for the packet */ | |
1444 | if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) { | |
1445 | /* | |
1446 | * Gasp! It hasn't. But that shouldn't happen since | |
1447 | * we're waiting for TxOk, so return 1 and requeue this packet. | |
1448 | */ | |
1449 | ||
1450 | spin_unlock_irq(&lp->lock); | |
1451 | if (net_debug) printk("cs89x0: Tx buffer not free!\n"); | |
1452 | return 1; | |
1453 | } | |
1454 | /* Write the contents of the packet */ | |
1455 | outsw(dev->base_addr + TX_FRAME_PORT,skb->data,(skb->len+1) >>1); | |
1456 | spin_unlock_irq(&lp->lock); | |
e1699f50 | 1457 | lp->stats.tx_bytes += skb->len; |
1da177e4 LT |
1458 | dev->trans_start = jiffies; |
1459 | dev_kfree_skb (skb); | |
1460 | ||
1461 | /* | |
1462 | * We DO NOT call netif_wake_queue() here. | |
1463 | * We also DO NOT call netif_start_queue(). | |
1464 | * | |
1465 | * Either of these would cause another bottom half run through | |
1466 | * net_send_packet() before this packet has fully gone out. That causes | |
1467 | * us to hit the "Gasp!" above and the send is rescheduled. it runs like | |
1468 | * a dog. We just return and wait for the Tx completion interrupt handler | |
1469 | * to restart the netdevice layer | |
1470 | */ | |
1471 | ||
1472 | return 0; | |
1473 | } | |
1474 | \f | |
1475 | /* The typical workload of the driver: | |
1476 | Handle the network interface interrupts. */ | |
1477 | ||
1478 | static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs * regs) | |
1479 | { | |
1480 | struct net_device *dev = dev_id; | |
1481 | struct net_local *lp; | |
1482 | int ioaddr, status; | |
1483 | int handled = 0; | |
1484 | ||
1485 | ioaddr = dev->base_addr; | |
1486 | lp = netdev_priv(dev); | |
1487 | ||
1488 | /* we MUST read all the events out of the ISQ, otherwise we'll never | |
1489 | get interrupted again. As a consequence, we can't have any limit | |
1490 | on the number of times we loop in the interrupt handler. The | |
1491 | hardware guarantees that eventually we'll run out of events. Of | |
1492 | course, if you're on a slow machine, and packets are arriving | |
1493 | faster than you can read them off, you're screwed. Hasta la | |
1494 | vista, baby! */ | |
1495 | while ((status = readword(dev, ISQ_PORT))) { | |
1496 | if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status); | |
1497 | handled = 1; | |
1498 | switch(status & ISQ_EVENT_MASK) { | |
1499 | case ISQ_RECEIVER_EVENT: | |
1500 | /* Got a packet(s). */ | |
1501 | net_rx(dev); | |
1502 | break; | |
1503 | case ISQ_TRANSMITTER_EVENT: | |
1504 | lp->stats.tx_packets++; | |
1505 | netif_wake_queue(dev); /* Inform upper layers. */ | |
1506 | if ((status & ( TX_OK | | |
1507 | TX_LOST_CRS | | |
1508 | TX_SQE_ERROR | | |
1509 | TX_LATE_COL | | |
1510 | TX_16_COL)) != TX_OK) { | |
1511 | if ((status & TX_OK) == 0) lp->stats.tx_errors++; | |
1512 | if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++; | |
1513 | if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++; | |
1514 | if (status & TX_LATE_COL) lp->stats.tx_window_errors++; | |
1515 | if (status & TX_16_COL) lp->stats.tx_aborted_errors++; | |
1516 | } | |
1517 | break; | |
1518 | case ISQ_BUFFER_EVENT: | |
1519 | if (status & READY_FOR_TX) { | |
1520 | /* we tried to transmit a packet earlier, | |
1521 | but inexplicably ran out of buffers. | |
1522 | That shouldn't happen since we only ever | |
1523 | load one packet. Shrug. Do the right | |
1524 | thing anyway. */ | |
1525 | netif_wake_queue(dev); /* Inform upper layers. */ | |
1526 | } | |
1527 | if (status & TX_UNDERRUN) { | |
1528 | if (net_debug > 0) printk("%s: transmit underrun\n", dev->name); | |
1529 | lp->send_underrun++; | |
1530 | if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381; | |
1531 | else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL; | |
1532 | /* transmit cycle is done, although | |
1533 | frame wasn't transmitted - this | |
1534 | avoids having to wait for the upper | |
1535 | layers to timeout on us, in the | |
1536 | event of a tx underrun */ | |
1537 | netif_wake_queue(dev); /* Inform upper layers. */ | |
1538 | } | |
1539 | #if ALLOW_DMA | |
1540 | if (lp->use_dma && (status & RX_DMA)) { | |
1541 | int count = readreg(dev, PP_DmaFrameCnt); | |
1542 | while(count) { | |
1543 | if (net_debug > 5) | |
1544 | printk("%s: receiving %d DMA frames\n", dev->name, count); | |
1545 | if (net_debug > 2 && count >1) | |
1546 | printk("%s: receiving %d DMA frames\n", dev->name, count); | |
1547 | dma_rx(dev); | |
1548 | if (--count == 0) | |
1549 | count = readreg(dev, PP_DmaFrameCnt); | |
1550 | if (net_debug > 2 && count > 0) | |
1551 | printk("%s: continuing with %d DMA frames\n", dev->name, count); | |
1552 | } | |
1553 | } | |
1554 | #endif | |
1555 | break; | |
1556 | case ISQ_RX_MISS_EVENT: | |
1557 | lp->stats.rx_missed_errors += (status >>6); | |
1558 | break; | |
1559 | case ISQ_TX_COL_EVENT: | |
1560 | lp->stats.collisions += (status >>6); | |
1561 | break; | |
1562 | } | |
1563 | } | |
1564 | return IRQ_RETVAL(handled); | |
1565 | } | |
1566 | ||
1567 | static void | |
1568 | count_rx_errors(int status, struct net_local *lp) | |
1569 | { | |
1570 | lp->stats.rx_errors++; | |
1571 | if (status & RX_RUNT) lp->stats.rx_length_errors++; | |
1572 | if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++; | |
1573 | if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT))) | |
1574 | /* per str 172 */ | |
1575 | lp->stats.rx_crc_errors++; | |
1576 | if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++; | |
1577 | return; | |
1578 | } | |
1579 | ||
1580 | /* We have a good packet(s), get it/them out of the buffers. */ | |
1581 | static void | |
1582 | net_rx(struct net_device *dev) | |
1583 | { | |
1584 | struct net_local *lp = netdev_priv(dev); | |
1585 | struct sk_buff *skb; | |
1586 | int status, length; | |
1587 | ||
1588 | int ioaddr = dev->base_addr; | |
1589 | status = inw(ioaddr + RX_FRAME_PORT); | |
1590 | length = inw(ioaddr + RX_FRAME_PORT); | |
1591 | ||
1592 | if ((status & RX_OK) == 0) { | |
1593 | count_rx_errors(status, lp); | |
1594 | return; | |
1595 | } | |
1596 | ||
1597 | /* Malloc up new buffer. */ | |
1598 | skb = dev_alloc_skb(length + 2); | |
1599 | if (skb == NULL) { | |
1600 | #if 0 /* Again, this seems a cruel thing to do */ | |
1601 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name); | |
1602 | #endif | |
1603 | lp->stats.rx_dropped++; | |
1604 | return; | |
1605 | } | |
1606 | skb_reserve(skb, 2); /* longword align L3 header */ | |
1607 | skb->dev = dev; | |
1608 | ||
1609 | insw(ioaddr + RX_FRAME_PORT, skb_put(skb, length), length >> 1); | |
1610 | if (length & 1) | |
1611 | skb->data[length-1] = inw(ioaddr + RX_FRAME_PORT); | |
1612 | ||
1613 | if (net_debug > 3) { | |
1614 | printk( "%s: received %d byte packet of type %x\n", | |
1615 | dev->name, length, | |
1616 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); | |
1617 | } | |
1618 | ||
1619 | skb->protocol=eth_type_trans(skb,dev); | |
1620 | netif_rx(skb); | |
1621 | dev->last_rx = jiffies; | |
1622 | lp->stats.rx_packets++; | |
1623 | lp->stats.rx_bytes += length; | |
1624 | } | |
1625 | ||
1626 | #if ALLOW_DMA | |
1627 | static void release_dma_buff(struct net_local *lp) | |
1628 | { | |
1629 | if (lp->dma_buff) { | |
1630 | free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024)); | |
1631 | lp->dma_buff = NULL; | |
1632 | } | |
1633 | } | |
1634 | #endif | |
1635 | ||
1636 | /* The inverse routine to net_open(). */ | |
1637 | static int | |
1638 | net_close(struct net_device *dev) | |
1639 | { | |
1640 | #if ALLOW_DMA | |
1641 | struct net_local *lp = netdev_priv(dev); | |
1642 | #endif | |
1643 | ||
1644 | netif_stop_queue(dev); | |
1645 | ||
1646 | writereg(dev, PP_RxCFG, 0); | |
1647 | writereg(dev, PP_TxCFG, 0); | |
1648 | writereg(dev, PP_BufCFG, 0); | |
1649 | writereg(dev, PP_BusCTL, 0); | |
1650 | ||
1651 | free_irq(dev->irq, dev); | |
1652 | ||
1653 | #if ALLOW_DMA | |
1654 | if (lp->use_dma && lp->dma) { | |
1655 | free_dma(dev->dma); | |
1656 | release_dma_buff(lp); | |
1657 | } | |
1658 | #endif | |
1659 | ||
1660 | /* Update the statistics here. */ | |
1661 | return 0; | |
1662 | } | |
1663 | ||
1664 | /* Get the current statistics. This may be called with the card open or | |
1665 | closed. */ | |
1666 | static struct net_device_stats * | |
1667 | net_get_stats(struct net_device *dev) | |
1668 | { | |
1669 | struct net_local *lp = netdev_priv(dev); | |
1670 | unsigned long flags; | |
1671 | ||
1672 | spin_lock_irqsave(&lp->lock, flags); | |
1673 | /* Update the statistics from the device registers. */ | |
1674 | lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6); | |
1675 | lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6); | |
1676 | spin_unlock_irqrestore(&lp->lock, flags); | |
1677 | ||
1678 | return &lp->stats; | |
1679 | } | |
1680 | ||
1681 | static void set_multicast_list(struct net_device *dev) | |
1682 | { | |
1683 | struct net_local *lp = netdev_priv(dev); | |
1684 | unsigned long flags; | |
1685 | ||
1686 | spin_lock_irqsave(&lp->lock, flags); | |
1687 | if(dev->flags&IFF_PROMISC) | |
1688 | { | |
1689 | lp->rx_mode = RX_ALL_ACCEPT; | |
1690 | } | |
1691 | else if((dev->flags&IFF_ALLMULTI)||dev->mc_list) | |
1692 | { | |
1693 | /* The multicast-accept list is initialized to accept-all, and we | |
1694 | rely on higher-level filtering for now. */ | |
1695 | lp->rx_mode = RX_MULTCAST_ACCEPT; | |
1696 | } | |
1697 | else | |
1698 | lp->rx_mode = 0; | |
1699 | ||
1700 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode); | |
1701 | ||
1702 | /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */ | |
1703 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg | | |
1704 | (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0)); | |
1705 | spin_unlock_irqrestore(&lp->lock, flags); | |
1706 | } | |
1707 | ||
1708 | ||
1709 | static int set_mac_address(struct net_device *dev, void *p) | |
1710 | { | |
1711 | int i; | |
1712 | struct sockaddr *addr = p; | |
1713 | ||
1714 | ||
1715 | if (netif_running(dev)) | |
1716 | return -EBUSY; | |
1717 | ||
1718 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1719 | ||
1720 | if (net_debug) { | |
1721 | printk("%s: Setting MAC address to ", dev->name); | |
1722 | for (i = 0; i < dev->addr_len; i++) | |
1723 | printk(" %2.2x", dev->dev_addr[i]); | |
1724 | printk(".\n"); | |
1725 | } | |
1726 | /* set the Ethernet address */ | |
1727 | for (i=0; i < ETH_ALEN/2; i++) | |
1728 | writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); | |
1729 | ||
1730 | return 0; | |
1731 | } | |
1732 | ||
1733 | #ifdef MODULE | |
1734 | ||
1735 | static struct net_device *dev_cs89x0; | |
1736 | ||
1737 | /* | |
1738 | * Support the 'debug' module parm even if we're compiled for non-debug to | |
1739 | * avoid breaking someone's startup scripts | |
1740 | */ | |
1741 | ||
1742 | static int io; | |
1743 | static int irq; | |
1744 | static int debug; | |
1745 | static char media[8]; | |
1746 | static int duplex=-1; | |
1747 | ||
1748 | static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */ | |
1749 | static int dma; | |
1750 | static int dmasize=16; /* or 64 */ | |
1751 | ||
1752 | module_param(io, int, 0); | |
1753 | module_param(irq, int, 0); | |
1754 | module_param(debug, int, 0); | |
1755 | module_param_string(media, media, sizeof(media), 0); | |
1756 | module_param(duplex, int, 0); | |
1757 | module_param(dma , int, 0); | |
1758 | module_param(dmasize , int, 0); | |
1759 | module_param(use_dma , int, 0); | |
1760 | MODULE_PARM_DESC(io, "cs89x0 I/O base address"); | |
1761 | MODULE_PARM_DESC(irq, "cs89x0 IRQ number"); | |
1762 | #if DEBUGGING | |
1763 | MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)"); | |
1764 | #else | |
1765 | MODULE_PARM_DESC(debug, "(ignored)"); | |
1766 | #endif | |
1767 | MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)"); | |
1768 | /* No other value than -1 for duplex seems to be currently interpreted */ | |
1769 | MODULE_PARM_DESC(duplex, "(ignored)"); | |
1770 | #if ALLOW_DMA | |
1771 | MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0"); | |
1772 | MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0"); | |
1773 | MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)"); | |
1774 | #else | |
1775 | MODULE_PARM_DESC(dma , "(ignored)"); | |
1776 | MODULE_PARM_DESC(dmasize , "(ignored)"); | |
1777 | MODULE_PARM_DESC(use_dma , "(ignored)"); | |
1778 | #endif | |
1779 | ||
1780 | MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>"); | |
1781 | MODULE_LICENSE("GPL"); | |
1782 | ||
1783 | ||
1784 | /* | |
1785 | * media=t - specify media type | |
1786 | or media=2 | |
1787 | or media=aui | |
1788 | or medai=auto | |
1789 | * duplex=0 - specify forced half/full/autonegotiate duplex | |
1790 | * debug=# - debug level | |
1791 | ||
1792 | ||
1793 | * Default Chip Configuration: | |
1794 | * DMA Burst = enabled | |
1795 | * IOCHRDY Enabled = enabled | |
1796 | * UseSA = enabled | |
1797 | * CS8900 defaults to half-duplex if not specified on command-line | |
1798 | * CS8920 defaults to autoneg if not specified on command-line | |
1799 | * Use reset defaults for other config parameters | |
1800 | ||
1801 | * Assumptions: | |
1802 | * media type specified is supported (circuitry is present) | |
1803 | * if memory address is > 1MB, then required mem decode hw is present | |
1804 | * if 10B-2, then agent other than driver will enable DC/DC converter | |
1805 | (hw or software util) | |
1806 | ||
1807 | ||
1808 | */ | |
1809 | ||
1810 | int | |
1811 | init_module(void) | |
1812 | { | |
1813 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
1814 | struct net_local *lp; | |
1815 | int ret = 0; | |
1816 | ||
1817 | #if DEBUGGING | |
1818 | net_debug = debug; | |
1819 | #else | |
1820 | debug = 0; | |
1821 | #endif | |
1822 | if (!dev) | |
1823 | return -ENOMEM; | |
1824 | ||
1825 | dev->irq = irq; | |
1826 | dev->base_addr = io; | |
1827 | lp = netdev_priv(dev); | |
1828 | ||
1829 | #if ALLOW_DMA | |
1830 | if (use_dma) { | |
1831 | lp->use_dma = use_dma; | |
1832 | lp->dma = dma; | |
1833 | lp->dmasize = dmasize; | |
1834 | } | |
1835 | #endif | |
1836 | ||
1837 | spin_lock_init(&lp->lock); | |
1838 | ||
1839 | /* boy, they'd better get these right */ | |
1840 | if (!strcmp(media, "rj45")) | |
1841 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; | |
1842 | else if (!strcmp(media, "aui")) | |
1843 | lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI; | |
1844 | else if (!strcmp(media, "bnc")) | |
1845 | lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2; | |
1846 | else | |
1847 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; | |
1848 | ||
1849 | if (duplex==-1) | |
1850 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; | |
1851 | ||
1852 | if (io == 0) { | |
1853 | printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n"); | |
1854 | printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n"); | |
1855 | ret = -EPERM; | |
1856 | goto out; | |
1857 | } else if (io <= 0x1ff) { | |
1858 | ret = -ENXIO; | |
1859 | goto out; | |
1860 | } | |
1861 | ||
1862 | #if ALLOW_DMA | |
1863 | if (use_dma && dmasize != 16 && dmasize != 64) { | |
1864 | printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize); | |
1865 | ret = -EPERM; | |
1866 | goto out; | |
1867 | } | |
1868 | #endif | |
1869 | ret = cs89x0_probe1(dev, io, 1); | |
1870 | if (ret) | |
1871 | goto out; | |
1872 | ||
1da177e4 LT |
1873 | dev_cs89x0 = dev; |
1874 | return 0; | |
1875 | out: | |
1876 | free_netdev(dev); | |
1877 | return ret; | |
1878 | } | |
1879 | ||
1880 | void | |
1881 | cleanup_module(void) | |
1882 | { | |
1883 | unregister_netdev(dev_cs89x0); | |
1884 | outw(PP_ChipID, dev_cs89x0->base_addr + ADD_PORT); | |
1885 | release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT); | |
1886 | free_netdev(dev_cs89x0); | |
1887 | } | |
1888 | #endif /* MODULE */ | |
1889 | \f | |
1890 | /* | |
1891 | * Local variables: | |
1892 | * version-control: t | |
1893 | * kept-new-versions: 5 | |
1894 | * c-indent-level: 8 | |
1895 | * tab-width: 8 | |
1896 | * End: | |
1897 | * | |
1898 | */ |