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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 | |
6aa20a22 | 18 | : Changes for Linux 2.0 compatibility. |
1da177e4 LT |
19 | : Added dev_id parameter in net_interrupt(), |
20 | : request_irq() and free_irq(). Just NULL for now. | |
21 | ||
22 | Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros | |
23 | : in net_open() and net_close() so kerneld would know | |
6aa20a22 | 24 | : that the module is in use and wouldn't eject the |
1da177e4 LT |
25 | : driver prematurely. |
26 | ||
27 | Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c | |
28 | : as an example. Disabled autoprobing in init_module(), | |
29 | : not a good thing to do to other devices while Linux | |
30 | : is running from all accounts. | |
31 | ||
32 | Russ Nelson : Jul 13 1998. Added RxOnly DMA support. | |
33 | ||
6aa20a22 | 34 | Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility. |
1da177e4 LT |
35 | : email: ethernet@crystal.cirrus.com |
36 | ||
37 | Alan Cox : Removed 1.2 support, added 2.1 extra counters. | |
38 | ||
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 | ||
032874e4 LB |
90 | Dmitry Pervushin : dpervushin@ru.mvista.com |
91 | : PNX010X platform support | |
92 | ||
9c878967 DS |
93 | Deepak Saxena : dsaxena@plexity.net |
94 | : Intel IXDP2351 platform support | |
95 | ||
5aeebe01 LB |
96 | Dmitry Pervushin : dpervushin@ru.mvista.com |
97 | : PNX010X platform support | |
98 | ||
1da177e4 LT |
99 | */ |
100 | ||
101 | /* Always include 'config.h' first in case the user wants to turn on | |
102 | or override something. */ | |
1da177e4 LT |
103 | #include <linux/module.h> |
104 | ||
105 | /* | |
106 | * Set this to zero to disable DMA code | |
107 | * | |
108 | * Note that even if DMA is turned off we still support the 'dma' and 'use_dma' | |
109 | * module options so we don't break any startup scripts. | |
110 | */ | |
91e1c463 | 111 | #ifndef CONFIG_ISA_DMA_API |
1da177e4 LT |
112 | #define ALLOW_DMA 0 |
113 | #else | |
114 | #define ALLOW_DMA 1 | |
115 | #endif | |
116 | ||
117 | /* | |
118 | * Set this to zero to remove all the debug statements via | |
119 | * dead code elimination | |
120 | */ | |
121 | #define DEBUGGING 1 | |
122 | ||
123 | /* | |
124 | Sources: | |
125 | ||
126 | Crynwr packet driver epktisa. | |
127 | ||
128 | Crystal Semiconductor data sheets. | |
129 | ||
130 | */ | |
131 | ||
132 | #include <linux/errno.h> | |
133 | #include <linux/netdevice.h> | |
134 | #include <linux/etherdevice.h> | |
135 | #include <linux/kernel.h> | |
136 | #include <linux/types.h> | |
137 | #include <linux/fcntl.h> | |
138 | #include <linux/interrupt.h> | |
139 | #include <linux/ioport.h> | |
140 | #include <linux/in.h> | |
141 | #include <linux/skbuff.h> | |
142 | #include <linux/slab.h> | |
143 | #include <linux/spinlock.h> | |
144 | #include <linux/string.h> | |
145 | #include <linux/init.h> | |
146 | #include <linux/bitops.h> | |
147 | #include <linux/delay.h> | |
148 | ||
149 | #include <asm/system.h> | |
150 | #include <asm/io.h> | |
7625d483 | 151 | #include <asm/irq.h> |
1da177e4 LT |
152 | #if ALLOW_DMA |
153 | #include <asm/dma.h> | |
154 | #endif | |
155 | ||
156 | #include "cs89x0.h" | |
157 | ||
158 | static char version[] __initdata = | |
159 | "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n"; | |
160 | ||
161 | #define DRV_NAME "cs89x0" | |
162 | ||
163 | /* First, a few definitions that the brave might change. | |
164 | A zero-terminated list of I/O addresses to be probed. Some special flags.. | |
165 | Addr & 1 = Read back the address port, look for signature and reset | |
6aa20a22 JG |
166 | the page window before probing |
167 | Addr & 3 = Reset the page window and probe | |
1da177e4 LT |
168 | The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space, |
169 | but it is possible that a Cirrus board could be plugged into the ISA | |
170 | slots. */ | |
6aa20a22 | 171 | /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps |
1da177e4 LT |
172 | them to system IRQ numbers. This mapping is card specific and is set to |
173 | the configuration of the Cirrus Eval board for this chip. */ | |
174 | #ifdef CONFIG_ARCH_CLPS7500 | |
a80763c9 | 175 | static unsigned int netcard_portlist[] __used __initdata = |
1da177e4 LT |
176 | { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0}; |
177 | static unsigned int cs8900_irq_map[] = {12,0,0,0}; | |
178 | #elif defined(CONFIG_SH_HICOSH4) | |
a80763c9 | 179 | static unsigned int netcard_portlist[] __used __initdata = |
1da177e4 LT |
180 | { 0x0300, 0}; |
181 | static unsigned int cs8900_irq_map[] = {1,0,0,0}; | |
9c878967 | 182 | #elif defined(CONFIG_MACH_IXDP2351) |
a80763c9 | 183 | static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0}; |
9c878967 DS |
184 | static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0}; |
185 | #include <asm/irq.h> | |
1da177e4 LT |
186 | #elif defined(CONFIG_ARCH_IXDP2X01) |
187 | #include <asm/irq.h> | |
a80763c9 | 188 | static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0}; |
1da177e4 | 189 | static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0}; |
277cb103 | 190 | #elif defined(CONFIG_ARCH_PNX010X) |
0dd3c781 | 191 | #include <asm/irq.h> |
192 | #include <asm/arch/gpio.h> | |
193 | #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */ | |
194 | #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */ | |
a80763c9 | 195 | static unsigned int netcard_portlist[] __used __initdata = {CIRRUS_DEFAULT_BASE, 0}; |
0dd3c781 | 196 | static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0}; |
1da177e4 | 197 | #else |
a80763c9 | 198 | static unsigned int netcard_portlist[] __used __initdata = |
1da177e4 LT |
199 | { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0}; |
200 | static unsigned int cs8900_irq_map[] = {10,11,12,5}; | |
201 | #endif | |
202 | ||
203 | #if DEBUGGING | |
204 | static unsigned int net_debug = DEBUGGING; | |
205 | #else | |
206 | #define net_debug 0 /* gcc will remove all the debug code for us */ | |
207 | #endif | |
208 | ||
209 | /* The number of low I/O ports used by the ethercard. */ | |
210 | #define NETCARD_IO_EXTENT 16 | |
211 | ||
212 | /* we allow the user to override various values normally set in the EEPROM */ | |
213 | #define FORCE_RJ45 0x0001 /* pick one of these three */ | |
214 | #define FORCE_AUI 0x0002 | |
215 | #define FORCE_BNC 0x0004 | |
216 | ||
217 | #define FORCE_AUTO 0x0010 /* pick one of these three */ | |
218 | #define FORCE_HALF 0x0020 | |
219 | #define FORCE_FULL 0x0030 | |
220 | ||
221 | /* Information that need to be kept for each board. */ | |
222 | struct net_local { | |
223 | struct net_device_stats stats; | |
224 | int chip_type; /* one of: CS8900, CS8920, CS8920M */ | |
225 | char chip_revision; /* revision letter of the chip ('A'...) */ | |
226 | int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */ | |
227 | int auto_neg_cnf; /* auto-negotiation word from EEPROM */ | |
228 | int adapter_cnf; /* adapter configuration from EEPROM */ | |
229 | int isa_config; /* ISA configuration from EEPROM */ | |
230 | int irq_map; /* IRQ map from EEPROM */ | |
231 | int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */ | |
232 | int curr_rx_cfg; /* a copy of PP_RxCFG */ | |
233 | int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */ | |
234 | int send_underrun; /* keep track of how many underruns in a row we get */ | |
235 | int force; /* force various values; see FORCE* above. */ | |
236 | spinlock_t lock; | |
237 | #if ALLOW_DMA | |
238 | int use_dma; /* Flag: we're using dma */ | |
239 | int dma; /* DMA channel */ | |
240 | int dmasize; /* 16 or 64 */ | |
241 | unsigned char *dma_buff; /* points to the beginning of the buffer */ | |
242 | unsigned char *end_dma_buff; /* points to the end of the buffer */ | |
243 | unsigned char *rx_dma_ptr; /* points to the next packet */ | |
244 | #endif | |
245 | }; | |
246 | ||
247 | /* Index to functions, as function prototypes. */ | |
248 | ||
249 | static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular); | |
250 | static int net_open(struct net_device *dev); | |
251 | static int net_send_packet(struct sk_buff *skb, struct net_device *dev); | |
7d12e780 | 252 | static irqreturn_t net_interrupt(int irq, void *dev_id); |
1da177e4 LT |
253 | static void set_multicast_list(struct net_device *dev); |
254 | static void net_timeout(struct net_device *dev); | |
255 | static void net_rx(struct net_device *dev); | |
256 | static int net_close(struct net_device *dev); | |
257 | static struct net_device_stats *net_get_stats(struct net_device *dev); | |
258 | static void reset_chip(struct net_device *dev); | |
259 | static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer); | |
260 | static int get_eeprom_cksum(int off, int len, int *buffer); | |
261 | static int set_mac_address(struct net_device *dev, void *addr); | |
262 | static void count_rx_errors(int status, struct net_local *lp); | |
6f519165 DS |
263 | #ifdef CONFIG_NET_POLL_CONTROLLER |
264 | static void net_poll_controller(struct net_device *dev); | |
265 | #endif | |
1da177e4 LT |
266 | #if ALLOW_DMA |
267 | static void get_dma_channel(struct net_device *dev); | |
268 | static void release_dma_buff(struct net_local *lp); | |
269 | #endif | |
270 | ||
271 | /* Example routines you must write ;->. */ | |
272 | #define tx_done(dev) 1 | |
273 | ||
274 | /* | |
275 | * Permit 'cs89x0_dma=N' in the kernel boot environment | |
276 | */ | |
277 | #if !defined(MODULE) && (ALLOW_DMA != 0) | |
278 | static int g_cs89x0_dma; | |
279 | ||
280 | static int __init dma_fn(char *str) | |
281 | { | |
282 | g_cs89x0_dma = simple_strtol(str,NULL,0); | |
283 | return 1; | |
284 | } | |
285 | ||
286 | __setup("cs89x0_dma=", dma_fn); | |
287 | #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */ | |
288 | ||
289 | #ifndef MODULE | |
290 | static int g_cs89x0_media__force; | |
291 | ||
292 | static int __init media_fn(char *str) | |
293 | { | |
294 | if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45; | |
295 | else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI; | |
296 | else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC; | |
297 | return 1; | |
298 | } | |
299 | ||
300 | __setup("cs89x0_media=", media_fn); | |
301 | ||
6aa20a22 | 302 | |
1da177e4 LT |
303 | /* Check for a network adaptor of this type, and return '0' iff one exists. |
304 | If dev->base_addr == 0, probe all likely locations. | |
305 | If dev->base_addr == 1, always return failure. | |
306 | If dev->base_addr == 2, allocate space for the device and return success | |
307 | (detachable devices only). | |
308 | Return 0 on success. | |
309 | */ | |
310 | ||
311 | struct net_device * __init cs89x0_probe(int unit) | |
312 | { | |
313 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
314 | unsigned *port; | |
315 | int err = 0; | |
316 | int irq; | |
317 | int io; | |
318 | ||
319 | if (!dev) | |
320 | return ERR_PTR(-ENODEV); | |
321 | ||
322 | sprintf(dev->name, "eth%d", unit); | |
323 | netdev_boot_setup_check(dev); | |
324 | io = dev->base_addr; | |
325 | irq = dev->irq; | |
326 | ||
327 | if (net_debug) | |
328 | printk("cs89x0:cs89x0_probe(0x%x)\n", io); | |
329 | ||
330 | if (io > 0x1ff) { /* Check a single specified location. */ | |
331 | err = cs89x0_probe1(dev, io, 0); | |
332 | } else if (io != 0) { /* Don't probe at all. */ | |
333 | err = -ENXIO; | |
334 | } else { | |
335 | for (port = netcard_portlist; *port; port++) { | |
336 | if (cs89x0_probe1(dev, *port, 0) == 0) | |
337 | break; | |
338 | dev->irq = irq; | |
339 | } | |
340 | if (!*port) | |
341 | err = -ENODEV; | |
342 | } | |
343 | if (err) | |
344 | goto out; | |
1da177e4 | 345 | return dev; |
1da177e4 LT |
346 | out: |
347 | free_netdev(dev); | |
348 | printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n"); | |
349 | return ERR_PTR(err); | |
350 | } | |
351 | #endif | |
352 | ||
9c878967 DS |
353 | #if defined(CONFIG_MACH_IXDP2351) |
354 | static u16 | |
355 | readword(unsigned long base_addr, int portno) | |
356 | { | |
357 | return __raw_readw(base_addr + (portno << 1)); | |
358 | } | |
359 | ||
360 | static void | |
361 | writeword(unsigned long base_addr, int portno, u16 value) | |
362 | { | |
363 | __raw_writew(value, base_addr + (portno << 1)); | |
364 | } | |
365 | #elif defined(CONFIG_ARCH_IXDP2X01) | |
a07f0dbe | 366 | static u16 |
3b68d70d LB |
367 | readword(unsigned long base_addr, int portno) |
368 | { | |
a07f0dbe | 369 | return __raw_readl(base_addr + (portno << 1)); |
3b68d70d LB |
370 | } |
371 | ||
372 | static void | |
a07f0dbe | 373 | writeword(unsigned long base_addr, int portno, u16 value) |
3b68d70d | 374 | { |
a07f0dbe | 375 | __raw_writel(value, base_addr + (portno << 1)); |
3b68d70d | 376 | } |
580d7b8c | 377 | #elif defined(CONFIG_ARCH_PNX010X) |
a07f0dbe | 378 | static u16 |
3b68d70d LB |
379 | readword(unsigned long base_addr, int portno) |
380 | { | |
381 | return inw(base_addr + (portno << 1)); | |
382 | } | |
383 | ||
384 | static void | |
a07f0dbe | 385 | writeword(unsigned long base_addr, int portno, u16 value) |
3b68d70d LB |
386 | { |
387 | outw(value, base_addr + (portno << 1)); | |
388 | } | |
389 | #else | |
a07f0dbe | 390 | static u16 |
0d5affcf | 391 | readword(unsigned long base_addr, int portno) |
1da177e4 | 392 | { |
0d5affcf | 393 | return inw(base_addr + portno); |
1da177e4 LT |
394 | } |
395 | ||
396 | static void | |
a07f0dbe | 397 | writeword(unsigned long base_addr, int portno, u16 value) |
1da177e4 | 398 | { |
0d5affcf | 399 | outw(value, base_addr + portno); |
1da177e4 | 400 | } |
3b68d70d | 401 | #endif |
1da177e4 | 402 | |
084f746a LB |
403 | static void |
404 | readwords(unsigned long base_addr, int portno, void *buf, int length) | |
405 | { | |
406 | u8 *buf8 = (u8 *)buf; | |
407 | ||
408 | do { | |
a07f0dbe | 409 | u16 tmp16; |
084f746a | 410 | |
a07f0dbe LB |
411 | tmp16 = readword(base_addr, portno); |
412 | *buf8++ = (u8)tmp16; | |
413 | *buf8++ = (u8)(tmp16 >> 8); | |
084f746a LB |
414 | } while (--length); |
415 | } | |
416 | ||
417 | static void | |
418 | writewords(unsigned long base_addr, int portno, void *buf, int length) | |
419 | { | |
420 | u8 *buf8 = (u8 *)buf; | |
421 | ||
422 | do { | |
a07f0dbe | 423 | u16 tmp16; |
084f746a | 424 | |
a07f0dbe LB |
425 | tmp16 = *buf8++; |
426 | tmp16 |= (*buf8++) << 8; | |
427 | writeword(base_addr, portno, tmp16); | |
084f746a LB |
428 | } while (--length); |
429 | } | |
430 | ||
a07f0dbe LB |
431 | static u16 |
432 | readreg(struct net_device *dev, u16 regno) | |
1da177e4 | 433 | { |
3eaa5e7d LB |
434 | writeword(dev->base_addr, ADD_PORT, regno); |
435 | return readword(dev->base_addr, DATA_PORT); | |
1da177e4 LT |
436 | } |
437 | ||
438 | static void | |
a07f0dbe | 439 | writereg(struct net_device *dev, u16 regno, u16 value) |
1da177e4 | 440 | { |
3eaa5e7d LB |
441 | writeword(dev->base_addr, ADD_PORT, regno); |
442 | writeword(dev->base_addr, DATA_PORT, value); | |
1da177e4 LT |
443 | } |
444 | ||
445 | static int __init | |
446 | wait_eeprom_ready(struct net_device *dev) | |
447 | { | |
448 | int timeout = jiffies; | |
449 | /* check to see if the EEPROM is ready, a timeout is used - | |
450 | just in case EEPROM is ready when SI_BUSY in the | |
451 | PP_SelfST is clear */ | |
452 | while(readreg(dev, PP_SelfST) & SI_BUSY) | |
453 | if (jiffies - timeout >= 40) | |
454 | return -1; | |
455 | return 0; | |
456 | } | |
457 | ||
458 | static int __init | |
459 | get_eeprom_data(struct net_device *dev, int off, int len, int *buffer) | |
460 | { | |
461 | int i; | |
462 | ||
463 | if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len); | |
464 | for (i = 0; i < len; i++) { | |
465 | if (wait_eeprom_ready(dev) < 0) return -1; | |
466 | /* Now send the EEPROM read command and EEPROM location to read */ | |
467 | writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD); | |
468 | if (wait_eeprom_ready(dev) < 0) return -1; | |
469 | buffer[i] = readreg(dev, PP_EEData); | |
470 | if (net_debug > 3) printk("%04x ", buffer[i]); | |
471 | } | |
472 | if (net_debug > 3) printk("\n"); | |
473 | return 0; | |
474 | } | |
475 | ||
476 | static int __init | |
477 | get_eeprom_cksum(int off, int len, int *buffer) | |
478 | { | |
479 | int i, cksum; | |
480 | ||
481 | cksum = 0; | |
482 | for (i = 0; i < len; i++) | |
483 | cksum += buffer[i]; | |
484 | cksum &= 0xffff; | |
485 | if (cksum == 0) | |
486 | return 0; | |
487 | return -1; | |
488 | } | |
489 | ||
6f519165 DS |
490 | #ifdef CONFIG_NET_POLL_CONTROLLER |
491 | /* | |
492 | * Polling receive - used by netconsole and other diagnostic tools | |
493 | * to allow network i/o with interrupts disabled. | |
494 | */ | |
495 | static void net_poll_controller(struct net_device *dev) | |
496 | { | |
497 | disable_irq(dev->irq); | |
7d12e780 | 498 | net_interrupt(dev->irq, dev); |
6f519165 DS |
499 | enable_irq(dev->irq); |
500 | } | |
501 | #endif | |
502 | ||
1da177e4 LT |
503 | /* This is the real probe routine. Linux has a history of friendly device |
504 | probes on the ISA bus. A good device probes avoids doing writes, and | |
505 | verifies that the correct device exists and functions. | |
506 | Return 0 on success. | |
507 | */ | |
508 | ||
509 | static int __init | |
510 | cs89x0_probe1(struct net_device *dev, int ioaddr, int modular) | |
511 | { | |
512 | struct net_local *lp = netdev_priv(dev); | |
513 | static unsigned version_printed; | |
514 | int i; | |
01bdc033 | 515 | int tmp; |
1da177e4 LT |
516 | unsigned rev_type = 0; |
517 | int eeprom_buff[CHKSUM_LEN]; | |
518 | int retval; | |
0795af57 | 519 | DECLARE_MAC_BUF(mac); |
1da177e4 | 520 | |
1da177e4 LT |
521 | /* Initialize the device structure. */ |
522 | if (!modular) { | |
523 | memset(lp, 0, sizeof(*lp)); | |
524 | spin_lock_init(&lp->lock); | |
525 | #ifndef MODULE | |
526 | #if ALLOW_DMA | |
527 | if (g_cs89x0_dma) { | |
528 | lp->use_dma = 1; | |
529 | lp->dma = g_cs89x0_dma; | |
530 | lp->dmasize = 16; /* Could make this an option... */ | |
531 | } | |
532 | #endif | |
533 | lp->force = g_cs89x0_media__force; | |
534 | #endif | |
535 | } | |
536 | ||
277cb103 | 537 | #ifdef CONFIG_ARCH_PNX010X |
0dd3c781 | 538 | initialize_ebi(); |
539 | ||
540 | /* Map GPIO registers for the pins connected to the CS8900a. */ | |
541 | if (map_cirrus_gpio() < 0) | |
542 | return -ENODEV; | |
543 | ||
544 | reset_cirrus(); | |
545 | ||
546 | /* Map event-router registers. */ | |
547 | if (map_event_router() < 0) | |
548 | return -ENODEV; | |
549 | ||
550 | enable_cirrus_irq(); | |
551 | ||
552 | unmap_cirrus_gpio(); | |
553 | unmap_event_router(); | |
554 | ||
555 | dev->base_addr = ioaddr; | |
556 | ||
557 | for (i = 0 ; i < 3 ; i++) | |
558 | readreg(dev, 0); | |
559 | #endif | |
560 | ||
1da177e4 LT |
561 | /* Grab the region so we can find another board if autoIRQ fails. */ |
562 | /* WTF is going on here? */ | |
563 | if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) { | |
564 | printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n", | |
565 | DRV_NAME, ioaddr, NETCARD_IO_EXTENT); | |
566 | retval = -EBUSY; | |
567 | goto out1; | |
568 | } | |
569 | ||
570 | #ifdef CONFIG_SH_HICOSH4 | |
571 | /* truely reset the chip */ | |
fc8c7d79 LB |
572 | writeword(ioaddr, ADD_PORT, 0x0114); |
573 | writeword(ioaddr, DATA_PORT, 0x0040); | |
1da177e4 LT |
574 | #endif |
575 | ||
576 | /* if they give us an odd I/O address, then do ONE write to | |
577 | the address port, to get it back to address zero, where we | |
578 | expect to find the EISA signature word. An IO with a base of 0x3 | |
579 | will skip the test for the ADD_PORT. */ | |
580 | if (ioaddr & 1) { | |
581 | if (net_debug > 1) | |
582 | printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr); | |
583 | if ((ioaddr & 2) != 2) | |
fc8c7d79 | 584 | if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) { |
1da177e4 | 585 | printk(KERN_ERR "%s: bad signature 0x%x\n", |
fc8c7d79 | 586 | dev->name, readword(ioaddr & ~3, ADD_PORT)); |
1da177e4 LT |
587 | retval = -ENODEV; |
588 | goto out2; | |
589 | } | |
590 | } | |
1da177e4 LT |
591 | |
592 | ioaddr &= ~3; | |
9e1402ab GD |
593 | printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n", |
594 | ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT)); | |
fc8c7d79 | 595 | writeword(ioaddr, ADD_PORT, PP_ChipID); |
1da177e4 | 596 | |
fc8c7d79 | 597 | tmp = readword(ioaddr, DATA_PORT); |
01bdc033 | 598 | if (tmp != CHIP_EISA_ID_SIG) { |
fc8c7d79 | 599 | printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!=" |
01bdc033 | 600 | CHIP_EISA_ID_SIG_STR "\n", |
fc8c7d79 | 601 | dev->name, ioaddr, DATA_PORT, tmp); |
1da177e4 LT |
602 | retval = -ENODEV; |
603 | goto out2; | |
604 | } | |
605 | ||
606 | /* Fill in the 'dev' fields. */ | |
607 | dev->base_addr = ioaddr; | |
608 | ||
609 | /* get the chip type */ | |
610 | rev_type = readreg(dev, PRODUCT_ID_ADD); | |
611 | lp->chip_type = rev_type &~ REVISON_BITS; | |
612 | lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; | |
613 | ||
614 | /* Check the chip type and revision in order to set the correct send command | |
615 | CS8920 revision C and CS8900 revision F can use the faster send. */ | |
616 | lp->send_cmd = TX_AFTER_381; | |
617 | if (lp->chip_type == CS8900 && lp->chip_revision >= 'F') | |
618 | lp->send_cmd = TX_NOW; | |
619 | if (lp->chip_type != CS8900 && lp->chip_revision >= 'C') | |
620 | lp->send_cmd = TX_NOW; | |
621 | ||
622 | if (net_debug && version_printed++ == 0) | |
623 | printk(version); | |
624 | ||
625 | printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ", | |
626 | dev->name, | |
627 | lp->chip_type==CS8900?'0':'2', | |
628 | lp->chip_type==CS8920M?"M":"", | |
629 | lp->chip_revision, | |
630 | dev->base_addr); | |
631 | ||
632 | reset_chip(dev); | |
6aa20a22 | 633 | |
1da177e4 LT |
634 | /* Here we read the current configuration of the chip. If there |
635 | is no Extended EEPROM then the idea is to not disturb the chip | |
636 | configuration, it should have been correctly setup by automatic | |
637 | EEPROM read on reset. So, if the chip says it read the EEPROM | |
638 | the driver will always do *something* instead of complain that | |
639 | adapter_cnf is 0. */ | |
640 | ||
641 | #ifdef CONFIG_SH_HICOSH4 | |
642 | if (1) { | |
643 | /* For the HiCO.SH4 board, things are different: we don't | |
644 | have EEPROM, but there is some data in flash, so we go | |
645 | get it there directly (MAC). */ | |
646 | __u16 *confd; | |
647 | short cnt; | |
648 | if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff) | |
649 | == 0x006c3000) { | |
650 | confd = (__u16*) 0xa0013fc0; | |
651 | } else { | |
652 | confd = (__u16*) 0xa001ffc0; | |
653 | } | |
654 | cnt = (*confd++ & 0x00ff) >> 1; | |
655 | while (--cnt > 0) { | |
656 | __u16 j = *confd++; | |
6aa20a22 | 657 | |
1da177e4 LT |
658 | switch (j & 0x0fff) { |
659 | case PP_IA: | |
660 | for (i = 0; i < ETH_ALEN/2; i++) { | |
661 | dev->dev_addr[i*2] = confd[i] & 0xFF; | |
662 | dev->dev_addr[i*2+1] = confd[i] >> 8; | |
663 | } | |
664 | break; | |
665 | } | |
666 | j = (j >> 12) + 1; | |
667 | confd += j; | |
668 | cnt -= j; | |
669 | } | |
670 | } else | |
671 | #endif | |
672 | ||
6aa20a22 | 673 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) == |
1da177e4 LT |
674 | (EEPROM_OK|EEPROM_PRESENT)) { |
675 | /* Load the MAC. */ | |
676 | for (i=0; i < ETH_ALEN/2; i++) { | |
677 | unsigned int Addr; | |
678 | Addr = readreg(dev, PP_IA+i*2); | |
679 | dev->dev_addr[i*2] = Addr & 0xFF; | |
680 | dev->dev_addr[i*2+1] = Addr >> 8; | |
681 | } | |
6aa20a22 JG |
682 | |
683 | /* Load the Adapter Configuration. | |
684 | Note: Barring any more specific information from some | |
685 | other source (ie EEPROM+Schematics), we would not know | |
686 | how to operate a 10Base2 interface on the AUI port. | |
687 | However, since we do read the status of HCB1 and use | |
688 | settings that always result in calls to control_dc_dc(dev,0) | |
689 | a BNC interface should work if the enable pin | |
690 | (dc/dc converter) is on HCB1. It will be called AUI | |
1da177e4 | 691 | however. */ |
6aa20a22 | 692 | |
1da177e4 LT |
693 | lp->adapter_cnf = 0; |
694 | i = readreg(dev, PP_LineCTL); | |
695 | /* Preserve the setting of the HCB1 pin. */ | |
696 | if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL)) | |
697 | lp->adapter_cnf |= A_CNF_DC_DC_POLARITY; | |
698 | /* Save the sqelch bit */ | |
699 | if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH) | |
700 | lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH; | |
701 | /* Check if the card is in 10Base-t only mode */ | |
702 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0) | |
703 | lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T; | |
704 | /* Check if the card is in AUI only mode */ | |
705 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY) | |
706 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI; | |
707 | /* Check if the card is in Auto mode. */ | |
708 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET) | |
6aa20a22 | 709 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T | |
1da177e4 | 710 | A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO; |
6aa20a22 | 711 | |
1da177e4 LT |
712 | if (net_debug > 1) |
713 | printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n", | |
714 | dev->name, i, lp->adapter_cnf); | |
715 | ||
716 | /* IRQ. Other chips already probe, see below. */ | |
6aa20a22 | 717 | if (lp->chip_type == CS8900) |
1da177e4 | 718 | lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK; |
6aa20a22 | 719 | |
1da177e4 LT |
720 | printk( "[Cirrus EEPROM] "); |
721 | } | |
722 | ||
723 | printk("\n"); | |
6aa20a22 | 724 | |
1da177e4 LT |
725 | /* First check to see if an EEPROM is attached. */ |
726 | #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */ | |
727 | if (1) { | |
728 | printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n"); | |
729 | } else | |
730 | #endif | |
731 | if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0) | |
732 | printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n"); | |
733 | else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { | |
734 | printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n"); | |
735 | } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { | |
736 | /* Check if the chip was able to read its own configuration starting | |
737 | at 0 in the EEPROM*/ | |
738 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) != | |
6aa20a22 | 739 | (EEPROM_OK|EEPROM_PRESENT)) |
1da177e4 | 740 | printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n"); |
6aa20a22 | 741 | |
1da177e4 LT |
742 | } else { |
743 | /* This reads an extended EEPROM that is not documented | |
744 | in the CS8900 datasheet. */ | |
6aa20a22 | 745 | |
1da177e4 LT |
746 | /* get transmission control word but keep the autonegotiation bits */ |
747 | if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2]; | |
748 | /* Store adapter configuration */ | |
749 | if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2]; | |
750 | /* Store ISA configuration */ | |
751 | lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2]; | |
752 | dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8; | |
753 | ||
754 | /* eeprom_buff has 32-bit ints, so we can't just memcpy it */ | |
755 | /* store the initial memory base address */ | |
756 | for (i = 0; i < ETH_ALEN/2; i++) { | |
757 | dev->dev_addr[i*2] = eeprom_buff[i]; | |
758 | dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8; | |
759 | } | |
760 | if (net_debug > 1) | |
761 | printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n", | |
762 | dev->name, lp->adapter_cnf); | |
763 | } | |
764 | ||
765 | /* allow them to force multiple transceivers. If they force multiple, autosense */ | |
766 | { | |
767 | int count = 0; | |
768 | if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; } | |
769 | if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; } | |
770 | if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; } | |
771 | if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; } | |
772 | else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; } | |
773 | else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; } | |
774 | else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; } | |
775 | } | |
776 | ||
777 | if (net_debug > 1) | |
778 | printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n", | |
779 | dev->name, lp->force, lp->adapter_cnf); | |
780 | ||
781 | /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */ | |
782 | ||
783 | /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */ | |
784 | ||
785 | /* FIXME: we don't set the Ethernet address on the command line. Use | |
786 | ifconfig IFACE hw ether AABBCCDDEEFF */ | |
787 | ||
788 | printk(KERN_INFO "cs89x0 media %s%s%s", | |
789 | (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"", | |
790 | (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"", | |
791 | (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":""); | |
792 | ||
793 | lp->irq_map = 0xffff; | |
794 | ||
795 | /* If this is a CS8900 then no pnp soft */ | |
796 | if (lp->chip_type != CS8900 && | |
797 | /* Check if the ISA IRQ has been set */ | |
798 | (i = readreg(dev, PP_CS8920_ISAINT) & 0xff, | |
799 | (i != 0 && i < CS8920_NO_INTS))) { | |
800 | if (!dev->irq) | |
801 | dev->irq = i; | |
802 | } else { | |
803 | i = lp->isa_config & INT_NO_MASK; | |
804 | if (lp->chip_type == CS8900) { | |
9c878967 | 805 | #if defined(CONFIG_MACH_IXDP2351) || defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX010X) |
1da177e4 LT |
806 | i = cs8900_irq_map[0]; |
807 | #else | |
808 | /* Translate the IRQ using the IRQ mapping table. */ | |
ff8ac609 | 809 | if (i >= ARRAY_SIZE(cs8900_irq_map)) |
1da177e4 LT |
810 | printk("\ncs89x0: invalid ISA interrupt number %d\n", i); |
811 | else | |
812 | i = cs8900_irq_map[i]; | |
6aa20a22 | 813 | |
1da177e4 LT |
814 | lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */ |
815 | } else { | |
816 | int irq_map_buff[IRQ_MAP_LEN/2]; | |
817 | ||
818 | if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA, | |
819 | IRQ_MAP_LEN/2, | |
820 | irq_map_buff) >= 0) { | |
821 | if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT) | |
822 | lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8); | |
823 | } | |
824 | #endif | |
825 | } | |
826 | if (!dev->irq) | |
827 | dev->irq = i; | |
828 | } | |
829 | ||
830 | printk(" IRQ %d", dev->irq); | |
831 | ||
832 | #if ALLOW_DMA | |
833 | if (lp->use_dma) { | |
834 | get_dma_channel(dev); | |
835 | printk(", DMA %d", dev->dma); | |
836 | } | |
837 | else | |
838 | #endif | |
839 | { | |
840 | printk(", programmed I/O"); | |
841 | } | |
842 | ||
843 | /* print the ethernet address. */ | |
0795af57 | 844 | printk(", MAC %s", print_mac(mac, dev->dev_addr)); |
1da177e4 LT |
845 | |
846 | dev->open = net_open; | |
847 | dev->stop = net_close; | |
848 | dev->tx_timeout = net_timeout; | |
849 | dev->watchdog_timeo = HZ; | |
850 | dev->hard_start_xmit = net_send_packet; | |
851 | dev->get_stats = net_get_stats; | |
852 | dev->set_multicast_list = set_multicast_list; | |
853 | dev->set_mac_address = set_mac_address; | |
6f519165 DS |
854 | #ifdef CONFIG_NET_POLL_CONTROLLER |
855 | dev->poll_controller = net_poll_controller; | |
856 | #endif | |
1da177e4 LT |
857 | |
858 | printk("\n"); | |
859 | if (net_debug) | |
860 | printk("cs89x0_probe1() successful\n"); | |
b1fc5505 | 861 | |
862 | retval = register_netdev(dev); | |
863 | if (retval) | |
864 | goto out3; | |
1da177e4 | 865 | return 0; |
b1fc5505 | 866 | out3: |
fc8c7d79 | 867 | writeword(dev->base_addr, ADD_PORT, PP_ChipID); |
1da177e4 LT |
868 | out2: |
869 | release_region(ioaddr & ~3, NETCARD_IO_EXTENT); | |
870 | out1: | |
871 | return retval; | |
872 | } | |
873 | ||
6aa20a22 | 874 | |
1da177e4 LT |
875 | /********************************* |
876 | * This page contains DMA routines | |
877 | **********************************/ | |
878 | ||
879 | #if ALLOW_DMA | |
880 | ||
881 | #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17) | |
882 | ||
883 | static void | |
884 | get_dma_channel(struct net_device *dev) | |
885 | { | |
886 | struct net_local *lp = netdev_priv(dev); | |
887 | ||
888 | if (lp->dma) { | |
889 | dev->dma = lp->dma; | |
890 | lp->isa_config |= ISA_RxDMA; | |
891 | } else { | |
892 | if ((lp->isa_config & ANY_ISA_DMA) == 0) | |
893 | return; | |
894 | dev->dma = lp->isa_config & DMA_NO_MASK; | |
895 | if (lp->chip_type == CS8900) | |
896 | dev->dma += 5; | |
897 | if (dev->dma < 5 || dev->dma > 7) { | |
898 | lp->isa_config &= ~ANY_ISA_DMA; | |
899 | return; | |
900 | } | |
901 | } | |
902 | return; | |
903 | } | |
904 | ||
905 | static void | |
906 | write_dma(struct net_device *dev, int chip_type, int dma) | |
907 | { | |
908 | struct net_local *lp = netdev_priv(dev); | |
909 | if ((lp->isa_config & ANY_ISA_DMA) == 0) | |
910 | return; | |
911 | if (chip_type == CS8900) { | |
912 | writereg(dev, PP_CS8900_ISADMA, dma-5); | |
913 | } else { | |
914 | writereg(dev, PP_CS8920_ISADMA, dma); | |
915 | } | |
916 | } | |
917 | ||
918 | static void | |
919 | set_dma_cfg(struct net_device *dev) | |
920 | { | |
921 | struct net_local *lp = netdev_priv(dev); | |
922 | ||
923 | if (lp->use_dma) { | |
924 | if ((lp->isa_config & ANY_ISA_DMA) == 0) { | |
925 | if (net_debug > 3) | |
926 | printk("set_dma_cfg(): no DMA\n"); | |
927 | return; | |
928 | } | |
929 | if (lp->isa_config & ISA_RxDMA) { | |
930 | lp->curr_rx_cfg |= RX_DMA_ONLY; | |
931 | if (net_debug > 3) | |
932 | printk("set_dma_cfg(): RX_DMA_ONLY\n"); | |
933 | } else { | |
934 | lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */ | |
935 | if (net_debug > 3) | |
936 | printk("set_dma_cfg(): AUTO_RX_DMA\n"); | |
937 | } | |
938 | } | |
939 | } | |
940 | ||
941 | static int | |
942 | dma_bufcfg(struct net_device *dev) | |
943 | { | |
944 | struct net_local *lp = netdev_priv(dev); | |
945 | if (lp->use_dma) | |
946 | return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0; | |
947 | else | |
948 | return 0; | |
949 | } | |
950 | ||
951 | static int | |
952 | dma_busctl(struct net_device *dev) | |
953 | { | |
954 | int retval = 0; | |
955 | struct net_local *lp = netdev_priv(dev); | |
956 | if (lp->use_dma) { | |
957 | if (lp->isa_config & ANY_ISA_DMA) | |
958 | retval |= RESET_RX_DMA; /* Reset the DMA pointer */ | |
959 | if (lp->isa_config & DMA_BURST) | |
960 | retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */ | |
961 | if (lp->dmasize == 64) | |
962 | retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */ | |
963 | retval |= MEMORY_ON; /* we need memory enabled to use DMA. */ | |
964 | } | |
965 | return retval; | |
966 | } | |
967 | ||
968 | static void | |
969 | dma_rx(struct net_device *dev) | |
970 | { | |
971 | struct net_local *lp = netdev_priv(dev); | |
972 | struct sk_buff *skb; | |
973 | int status, length; | |
974 | unsigned char *bp = lp->rx_dma_ptr; | |
975 | ||
976 | status = bp[0] + (bp[1]<<8); | |
977 | length = bp[2] + (bp[3]<<8); | |
978 | bp += 4; | |
979 | if (net_debug > 5) { | |
980 | printk( "%s: receiving DMA packet at %lx, status %x, length %x\n", | |
981 | dev->name, (unsigned long)bp, status, length); | |
982 | } | |
983 | if ((status & RX_OK) == 0) { | |
984 | count_rx_errors(status, lp); | |
985 | goto skip_this_frame; | |
986 | } | |
987 | ||
988 | /* Malloc up new buffer. */ | |
989 | skb = dev_alloc_skb(length + 2); | |
990 | if (skb == NULL) { | |
991 | if (net_debug) /* I don't think we want to do this to a stressed system */ | |
992 | printk("%s: Memory squeeze, dropping packet.\n", dev->name); | |
993 | lp->stats.rx_dropped++; | |
994 | ||
995 | /* AKPM: advance bp to the next frame */ | |
996 | skip_this_frame: | |
997 | bp += (length + 3) & ~3; | |
998 | if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024; | |
999 | lp->rx_dma_ptr = bp; | |
1000 | return; | |
1001 | } | |
1002 | skb_reserve(skb, 2); /* longword align L3 header */ | |
1da177e4 LT |
1003 | |
1004 | if (bp + length > lp->end_dma_buff) { | |
1005 | int semi_cnt = lp->end_dma_buff - bp; | |
1006 | memcpy(skb_put(skb,semi_cnt), bp, semi_cnt); | |
1007 | memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff, | |
1008 | length - semi_cnt); | |
1009 | } else { | |
1010 | memcpy(skb_put(skb,length), bp, length); | |
1011 | } | |
1012 | bp += (length + 3) & ~3; | |
1013 | if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024; | |
1014 | lp->rx_dma_ptr = bp; | |
1015 | ||
1016 | if (net_debug > 3) { | |
1017 | printk( "%s: received %d byte DMA packet of type %x\n", | |
1018 | dev->name, length, | |
1019 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); | |
1020 | } | |
1021 | skb->protocol=eth_type_trans(skb,dev); | |
1022 | netif_rx(skb); | |
1023 | dev->last_rx = jiffies; | |
1024 | lp->stats.rx_packets++; | |
1025 | lp->stats.rx_bytes += length; | |
1026 | } | |
1027 | ||
1028 | #endif /* ALLOW_DMA */ | |
1029 | ||
1030 | void __init reset_chip(struct net_device *dev) | |
1031 | { | |
9c878967 | 1032 | #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01) |
1da177e4 LT |
1033 | struct net_local *lp = netdev_priv(dev); |
1034 | int ioaddr = dev->base_addr; | |
1035 | #endif | |
1036 | int reset_start_time; | |
1037 | ||
1038 | writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET); | |
1039 | ||
1040 | /* wait 30 ms */ | |
1041 | msleep(30); | |
1042 | ||
9c878967 | 1043 | #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01) |
1da177e4 LT |
1044 | if (lp->chip_type != CS8900) { |
1045 | /* Hardware problem requires PNP registers to be reconfigured after a reset */ | |
fc8c7d79 | 1046 | writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT); |
1da177e4 LT |
1047 | outb(dev->irq, ioaddr + DATA_PORT); |
1048 | outb(0, ioaddr + DATA_PORT + 1); | |
1049 | ||
fc8c7d79 | 1050 | writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB); |
1da177e4 LT |
1051 | outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT); |
1052 | outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1); | |
1053 | } | |
1054 | #endif /* IXDP2x01 */ | |
1055 | ||
1056 | /* Wait until the chip is reset */ | |
1057 | reset_start_time = jiffies; | |
1058 | while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2) | |
1059 | ; | |
1060 | } | |
1061 | ||
6aa20a22 | 1062 | |
1da177e4 LT |
1063 | static void |
1064 | control_dc_dc(struct net_device *dev, int on_not_off) | |
1065 | { | |
1066 | struct net_local *lp = netdev_priv(dev); | |
1067 | unsigned int selfcontrol; | |
1068 | int timenow = jiffies; | |
6aa20a22 | 1069 | /* control the DC to DC convertor in the SelfControl register. |
1da177e4 LT |
1070 | Note: This is hooked up to a general purpose pin, might not |
1071 | always be a DC to DC convertor. */ | |
1072 | ||
1073 | selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */ | |
1074 | if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off) | |
1075 | selfcontrol |= HCB1; | |
1076 | else | |
1077 | selfcontrol &= ~HCB1; | |
1078 | writereg(dev, PP_SelfCTL, selfcontrol); | |
1079 | ||
1080 | /* Wait for the DC/DC converter to power up - 500ms */ | |
1081 | while (jiffies - timenow < HZ) | |
1082 | ; | |
1083 | } | |
1084 | ||
1085 | #define DETECTED_NONE 0 | |
1086 | #define DETECTED_RJ45H 1 | |
1087 | #define DETECTED_RJ45F 2 | |
1088 | #define DETECTED_AUI 3 | |
1089 | #define DETECTED_BNC 4 | |
1090 | ||
1091 | static int | |
1092 | detect_tp(struct net_device *dev) | |
1093 | { | |
1094 | struct net_local *lp = netdev_priv(dev); | |
1095 | int timenow = jiffies; | |
1096 | int fdx; | |
1097 | ||
1098 | if (net_debug > 1) printk("%s: Attempting TP\n", dev->name); | |
1099 | ||
1100 | /* If connected to another full duplex capable 10-Base-T card the link pulses | |
1101 | seem to be lost when the auto detect bit in the LineCTL is set. | |
1102 | To overcome this the auto detect bit will be cleared whilst testing the | |
1103 | 10-Base-T interface. This would not be necessary for the sparrow chip but | |
1104 | is simpler to do it anyway. */ | |
1105 | writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY); | |
1106 | control_dc_dc(dev, 0); | |
1107 | ||
1108 | /* Delay for the hardware to work out if the TP cable is present - 150ms */ | |
1109 | for (timenow = jiffies; jiffies - timenow < 15; ) | |
1110 | ; | |
1111 | if ((readreg(dev, PP_LineST) & LINK_OK) == 0) | |
1112 | return DETECTED_NONE; | |
1113 | ||
1114 | if (lp->chip_type == CS8900) { | |
1115 | switch (lp->force & 0xf0) { | |
1116 | #if 0 | |
1117 | case FORCE_AUTO: | |
1118 | printk("%s: cs8900 doesn't autonegotiate\n",dev->name); | |
1119 | return DETECTED_NONE; | |
1120 | #endif | |
1121 | /* CS8900 doesn't support AUTO, change to HALF*/ | |
1122 | case FORCE_AUTO: | |
1123 | lp->force &= ~FORCE_AUTO; | |
1124 | lp->force |= FORCE_HALF; | |
1125 | break; | |
1126 | case FORCE_HALF: | |
1127 | break; | |
1128 | case FORCE_FULL: | |
1129 | writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900); | |
1130 | break; | |
1131 | } | |
1132 | fdx = readreg(dev, PP_TestCTL) & FDX_8900; | |
1133 | } else { | |
1134 | switch (lp->force & 0xf0) { | |
1135 | case FORCE_AUTO: | |
1136 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; | |
1137 | break; | |
1138 | case FORCE_HALF: | |
1139 | lp->auto_neg_cnf = 0; | |
1140 | break; | |
1141 | case FORCE_FULL: | |
1142 | lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX; | |
1143 | break; | |
1144 | } | |
1145 | ||
1146 | writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK); | |
1147 | ||
1148 | if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) { | |
1149 | printk(KERN_INFO "%s: negotiating duplex...\n",dev->name); | |
1150 | while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) { | |
1151 | if (jiffies - timenow > 4000) { | |
1152 | printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n"); | |
1153 | break; | |
1154 | } | |
1155 | } | |
1156 | } | |
1157 | fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE; | |
1158 | } | |
1159 | if (fdx) | |
1160 | return DETECTED_RJ45F; | |
1161 | else | |
1162 | return DETECTED_RJ45H; | |
1163 | } | |
1164 | ||
1165 | /* send a test packet - return true if carrier bits are ok */ | |
1166 | static int | |
1167 | send_test_pkt(struct net_device *dev) | |
1168 | { | |
1169 | char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0, | |
1170 | 0, 46, /* A 46 in network order */ | |
1171 | 0, 0, /* DSAP=0 & SSAP=0 fields */ | |
1172 | 0xf3, 0 /* Control (Test Req + P bit set) */ }; | |
1173 | long timenow = jiffies; | |
1174 | ||
1175 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON); | |
1176 | ||
1177 | memcpy(test_packet, dev->dev_addr, ETH_ALEN); | |
1178 | memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN); | |
1179 | ||
974dffc2 LB |
1180 | writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL); |
1181 | writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN); | |
1da177e4 LT |
1182 | |
1183 | /* Test to see if the chip has allocated memory for the packet */ | |
1184 | while (jiffies - timenow < 5) | |
1185 | if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW) | |
1186 | break; | |
1187 | if (jiffies - timenow >= 5) | |
1188 | return 0; /* this shouldn't happen */ | |
1189 | ||
1190 | /* Write the contents of the packet */ | |
084f746a | 1191 | writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1); |
1da177e4 LT |
1192 | |
1193 | if (net_debug > 1) printk("Sending test packet "); | |
1194 | /* wait a couple of jiffies for packet to be received */ | |
1195 | for (timenow = jiffies; jiffies - timenow < 3; ) | |
1196 | ; | |
1197 | if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { | |
1198 | if (net_debug > 1) printk("succeeded\n"); | |
1199 | return 1; | |
1200 | } | |
1201 | if (net_debug > 1) printk("failed\n"); | |
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | ||
1206 | static int | |
1207 | detect_aui(struct net_device *dev) | |
1208 | { | |
1209 | struct net_local *lp = netdev_priv(dev); | |
1210 | ||
1211 | if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name); | |
1212 | control_dc_dc(dev, 0); | |
1213 | ||
1214 | writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); | |
1215 | ||
1216 | if (send_test_pkt(dev)) | |
1217 | return DETECTED_AUI; | |
1218 | else | |
1219 | return DETECTED_NONE; | |
1220 | } | |
1221 | ||
1222 | static int | |
1223 | detect_bnc(struct net_device *dev) | |
1224 | { | |
1225 | struct net_local *lp = netdev_priv(dev); | |
1226 | ||
1227 | if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name); | |
1228 | control_dc_dc(dev, 1); | |
1229 | ||
1230 | writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); | |
1231 | ||
1232 | if (send_test_pkt(dev)) | |
1233 | return DETECTED_BNC; | |
1234 | else | |
1235 | return DETECTED_NONE; | |
1236 | } | |
1237 | ||
6aa20a22 | 1238 | |
1da177e4 LT |
1239 | static void |
1240 | write_irq(struct net_device *dev, int chip_type, int irq) | |
1241 | { | |
1242 | int i; | |
1243 | ||
1244 | if (chip_type == CS8900) { | |
1245 | /* Search the mapping table for the corresponding IRQ pin. */ | |
ff8ac609 | 1246 | for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++) |
1da177e4 LT |
1247 | if (cs8900_irq_map[i] == irq) |
1248 | break; | |
1249 | /* Not found */ | |
ff8ac609 | 1250 | if (i == ARRAY_SIZE(cs8900_irq_map)) |
1da177e4 LT |
1251 | i = 3; |
1252 | writereg(dev, PP_CS8900_ISAINT, i); | |
1253 | } else { | |
1254 | writereg(dev, PP_CS8920_ISAINT, irq); | |
1255 | } | |
1256 | } | |
1257 | ||
1258 | /* Open/initialize the board. This is called (in the current kernel) | |
1259 | sometime after booting when the 'ifconfig' program is run. | |
1260 | ||
1261 | This routine should set everything up anew at each open, even | |
1262 | registers that "should" only need to be set once at boot, so that | |
1263 | there is non-reboot way to recover if something goes wrong. | |
1264 | */ | |
1265 | ||
1266 | /* AKPM: do we need to do any locking here? */ | |
1267 | ||
1268 | static int | |
1269 | net_open(struct net_device *dev) | |
1270 | { | |
1271 | struct net_local *lp = netdev_priv(dev); | |
1272 | int result = 0; | |
1273 | int i; | |
1274 | int ret; | |
1275 | ||
277cb103 | 1276 | #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */ |
1da177e4 LT |
1277 | if (dev->irq < 2) { |
1278 | /* Allow interrupts to be generated by the chip */ | |
1279 | /* Cirrus' release had this: */ | |
1280 | #if 0 | |
1281 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); | |
1282 | #endif | |
1283 | /* And 2.3.47 had this: */ | |
1284 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); | |
1285 | ||
1286 | for (i = 2; i < CS8920_NO_INTS; i++) { | |
1287 | if ((1 << i) & lp->irq_map) { | |
1288 | if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) { | |
1289 | dev->irq = i; | |
1290 | write_irq(dev, lp->chip_type, i); | |
1291 | /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */ | |
1292 | break; | |
1293 | } | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | if (i >= CS8920_NO_INTS) { | |
1298 | writereg(dev, PP_BusCTL, 0); /* disable interrupts. */ | |
1299 | printk(KERN_ERR "cs89x0: can't get an interrupt\n"); | |
1300 | ret = -EAGAIN; | |
1301 | goto bad_out; | |
1302 | } | |
1303 | } | |
1304 | else | |
1305 | #endif | |
1306 | { | |
9c878967 | 1307 | #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX010X) |
1da177e4 LT |
1308 | if (((1 << dev->irq) & lp->irq_map) == 0) { |
1309 | printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n", | |
1310 | dev->name, dev->irq, lp->irq_map); | |
1311 | ret = -EAGAIN; | |
1312 | goto bad_out; | |
1313 | } | |
1314 | #endif | |
1315 | /* FIXME: Cirrus' release had this: */ | |
1316 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); | |
1317 | /* And 2.3.47 had this: */ | |
1318 | #if 0 | |
1319 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); | |
1320 | #endif | |
1321 | write_irq(dev, lp->chip_type, dev->irq); | |
1322 | ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev); | |
1323 | if (ret) { | |
1324 | if (net_debug) | |
1325 | printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq); | |
1326 | goto bad_out; | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | #if ALLOW_DMA | |
1331 | if (lp->use_dma) { | |
1332 | if (lp->isa_config & ANY_ISA_DMA) { | |
1333 | unsigned long flags; | |
1334 | lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL, | |
1335 | get_order(lp->dmasize * 1024)); | |
1336 | ||
1337 | if (!lp->dma_buff) { | |
1338 | printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize); | |
1339 | goto release_irq; | |
1340 | } | |
1341 | if (net_debug > 1) { | |
1342 | printk( "%s: dma %lx %lx\n", | |
1343 | dev->name, | |
1344 | (unsigned long)lp->dma_buff, | |
1345 | (unsigned long)isa_virt_to_bus(lp->dma_buff)); | |
1346 | } | |
1347 | if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS || | |
1348 | !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) { | |
1349 | printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name); | |
1350 | goto release_irq; | |
1351 | } | |
1352 | memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */ | |
1353 | if (request_dma(dev->dma, dev->name)) { | |
1354 | printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma); | |
1355 | goto release_irq; | |
1356 | } | |
1357 | write_dma(dev, lp->chip_type, dev->dma); | |
1358 | lp->rx_dma_ptr = lp->dma_buff; | |
1359 | lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024; | |
1360 | spin_lock_irqsave(&lp->lock, flags); | |
1361 | disable_dma(dev->dma); | |
1362 | clear_dma_ff(dev->dma); | |
1363 | set_dma_mode(dev->dma, 0x14); /* auto_init as well */ | |
1364 | set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff)); | |
1365 | set_dma_count(dev->dma, lp->dmasize*1024); | |
1366 | enable_dma(dev->dma); | |
1367 | spin_unlock_irqrestore(&lp->lock, flags); | |
1368 | } | |
1369 | } | |
1370 | #endif /* ALLOW_DMA */ | |
1371 | ||
1372 | /* set the Ethernet address */ | |
1373 | for (i=0; i < ETH_ALEN/2; i++) | |
1374 | writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); | |
1375 | ||
1376 | /* while we're testing the interface, leave interrupts disabled */ | |
1377 | writereg(dev, PP_BusCTL, MEMORY_ON); | |
1378 | ||
1379 | /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */ | |
1380 | if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH)) | |
1381 | lp->linectl = LOW_RX_SQUELCH; | |
1382 | else | |
1383 | lp->linectl = 0; | |
1384 | ||
1385 | /* check to make sure that they have the "right" hardware available */ | |
1386 | switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { | |
1387 | case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break; | |
1388 | case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break; | |
1389 | case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break; | |
1390 | default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2); | |
1391 | } | |
277cb103 | 1392 | #ifdef CONFIG_ARCH_PNX010X |
0dd3c781 | 1393 | result = A_CNF_10B_T; |
1394 | #endif | |
1da177e4 LT |
1395 | if (!result) { |
1396 | printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name); | |
17a9440f WC |
1397 | release_dma: |
1398 | #if ALLOW_DMA | |
1399 | free_dma(dev->dma); | |
1400 | #endif | |
1401 | release_irq: | |
1da177e4 LT |
1402 | #if ALLOW_DMA |
1403 | release_dma_buff(lp); | |
1404 | #endif | |
1405 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON)); | |
1406 | free_irq(dev->irq, dev); | |
1407 | ret = -EAGAIN; | |
1408 | goto bad_out; | |
1409 | } | |
1410 | ||
1411 | /* set the hardware to the configured choice */ | |
1412 | switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { | |
1413 | case A_CNF_MEDIA_10B_T: | |
1414 | result = detect_tp(dev); | |
1415 | if (result==DETECTED_NONE) { | |
1416 | printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name); | |
1417 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ | |
1418 | result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */ | |
1419 | } | |
1420 | break; | |
1421 | case A_CNF_MEDIA_AUI: | |
1422 | result = detect_aui(dev); | |
1423 | if (result==DETECTED_NONE) { | |
1424 | printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name); | |
1425 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ | |
1426 | result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */ | |
1427 | } | |
1428 | break; | |
1429 | case A_CNF_MEDIA_10B_2: | |
1430 | result = detect_bnc(dev); | |
1431 | if (result==DETECTED_NONE) { | |
1432 | printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name); | |
1433 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ | |
1434 | result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */ | |
1435 | } | |
1436 | break; | |
1437 | case A_CNF_MEDIA_AUTO: | |
1438 | writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET); | |
1439 | if (lp->adapter_cnf & A_CNF_10B_T) | |
1440 | if ((result = detect_tp(dev)) != DETECTED_NONE) | |
1441 | break; | |
1442 | if (lp->adapter_cnf & A_CNF_AUI) | |
1443 | if ((result = detect_aui(dev)) != DETECTED_NONE) | |
1444 | break; | |
1445 | if (lp->adapter_cnf & A_CNF_10B_2) | |
1446 | if ((result = detect_bnc(dev)) != DETECTED_NONE) | |
1447 | break; | |
1448 | printk(KERN_ERR "%s: no media detected\n", dev->name); | |
17a9440f | 1449 | goto release_dma; |
1da177e4 LT |
1450 | } |
1451 | switch(result) { | |
1452 | case DETECTED_NONE: | |
1453 | printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name); | |
17a9440f | 1454 | goto release_dma; |
1da177e4 LT |
1455 | case DETECTED_RJ45H: |
1456 | printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name); | |
1457 | break; | |
1458 | case DETECTED_RJ45F: | |
1459 | printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name); | |
1460 | break; | |
1461 | case DETECTED_AUI: | |
1462 | printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name); | |
1463 | break; | |
1464 | case DETECTED_BNC: | |
1465 | printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name); | |
1466 | break; | |
1467 | } | |
1468 | ||
1469 | /* Turn on both receive and transmit operations */ | |
1470 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); | |
1471 | ||
1472 | /* Receive only error free packets addressed to this card */ | |
1473 | lp->rx_mode = 0; | |
1474 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT); | |
1475 | ||
1476 | lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL; | |
1477 | ||
1478 | if (lp->isa_config & STREAM_TRANSFER) | |
1479 | lp->curr_rx_cfg |= RX_STREAM_ENBL; | |
1480 | #if ALLOW_DMA | |
1481 | set_dma_cfg(dev); | |
1482 | #endif | |
1483 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg); | |
1484 | ||
1485 | writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL | | |
1486 | TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL); | |
1487 | ||
1488 | writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL | | |
1489 | #if ALLOW_DMA | |
1490 | dma_bufcfg(dev) | | |
1491 | #endif | |
1492 | TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL); | |
1493 | ||
1494 | /* now that we've got our act together, enable everything */ | |
1495 | writereg(dev, PP_BusCTL, ENABLE_IRQ | |
1496 | | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */ | |
1497 | #if ALLOW_DMA | |
1498 | | dma_busctl(dev) | |
1499 | #endif | |
1500 | ); | |
1501 | netif_start_queue(dev); | |
1502 | if (net_debug > 1) | |
1503 | printk("cs89x0: net_open() succeeded\n"); | |
1504 | return 0; | |
1505 | bad_out: | |
1506 | return ret; | |
1507 | } | |
1508 | ||
1509 | static void net_timeout(struct net_device *dev) | |
1510 | { | |
1511 | /* If we get here, some higher level has decided we are broken. | |
1512 | There should really be a "kick me" function call instead. */ | |
1513 | if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name, | |
1514 | tx_done(dev) ? "IRQ conflict ?" : "network cable problem"); | |
1515 | /* Try to restart the adaptor. */ | |
1516 | netif_wake_queue(dev); | |
1517 | } | |
1518 | ||
1519 | static int net_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1520 | { | |
1521 | struct net_local *lp = netdev_priv(dev); | |
1522 | ||
1523 | if (net_debug > 3) { | |
1524 | printk("%s: sent %d byte packet of type %x\n", | |
1525 | dev->name, skb->len, | |
1526 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); | |
1527 | } | |
1528 | ||
1529 | /* keep the upload from being interrupted, since we | |
1530 | ask the chip to start transmitting before the | |
1531 | whole packet has been completely uploaded. */ | |
1532 | ||
1533 | spin_lock_irq(&lp->lock); | |
1534 | netif_stop_queue(dev); | |
1535 | ||
1536 | /* initiate a transmit sequence */ | |
974dffc2 LB |
1537 | writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd); |
1538 | writeword(dev->base_addr, TX_LEN_PORT, skb->len); | |
1da177e4 LT |
1539 | |
1540 | /* Test to see if the chip has allocated memory for the packet */ | |
1541 | if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) { | |
1542 | /* | |
1543 | * Gasp! It hasn't. But that shouldn't happen since | |
1544 | * we're waiting for TxOk, so return 1 and requeue this packet. | |
1545 | */ | |
6aa20a22 | 1546 | |
1da177e4 LT |
1547 | spin_unlock_irq(&lp->lock); |
1548 | if (net_debug) printk("cs89x0: Tx buffer not free!\n"); | |
1549 | return 1; | |
1550 | } | |
1551 | /* Write the contents of the packet */ | |
084f746a | 1552 | writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1); |
1da177e4 | 1553 | spin_unlock_irq(&lp->lock); |
e1699f50 | 1554 | lp->stats.tx_bytes += skb->len; |
1da177e4 LT |
1555 | dev->trans_start = jiffies; |
1556 | dev_kfree_skb (skb); | |
1557 | ||
1558 | /* | |
1559 | * We DO NOT call netif_wake_queue() here. | |
1560 | * We also DO NOT call netif_start_queue(). | |
1561 | * | |
1562 | * Either of these would cause another bottom half run through | |
1563 | * net_send_packet() before this packet has fully gone out. That causes | |
1564 | * us to hit the "Gasp!" above and the send is rescheduled. it runs like | |
1565 | * a dog. We just return and wait for the Tx completion interrupt handler | |
1566 | * to restart the netdevice layer | |
1567 | */ | |
1568 | ||
1569 | return 0; | |
1570 | } | |
6aa20a22 | 1571 | |
1da177e4 LT |
1572 | /* The typical workload of the driver: |
1573 | Handle the network interface interrupts. */ | |
6aa20a22 | 1574 | |
7d12e780 | 1575 | static irqreturn_t net_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1576 | { |
1577 | struct net_device *dev = dev_id; | |
1578 | struct net_local *lp; | |
1579 | int ioaddr, status; | |
1580 | int handled = 0; | |
1581 | ||
1582 | ioaddr = dev->base_addr; | |
1583 | lp = netdev_priv(dev); | |
1584 | ||
1585 | /* we MUST read all the events out of the ISQ, otherwise we'll never | |
1586 | get interrupted again. As a consequence, we can't have any limit | |
1587 | on the number of times we loop in the interrupt handler. The | |
1588 | hardware guarantees that eventually we'll run out of events. Of | |
1589 | course, if you're on a slow machine, and packets are arriving | |
1590 | faster than you can read them off, you're screwed. Hasta la | |
1591 | vista, baby! */ | |
974dffc2 | 1592 | while ((status = readword(dev->base_addr, ISQ_PORT))) { |
1da177e4 LT |
1593 | if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status); |
1594 | handled = 1; | |
1595 | switch(status & ISQ_EVENT_MASK) { | |
1596 | case ISQ_RECEIVER_EVENT: | |
1597 | /* Got a packet(s). */ | |
1598 | net_rx(dev); | |
1599 | break; | |
1600 | case ISQ_TRANSMITTER_EVENT: | |
1601 | lp->stats.tx_packets++; | |
1602 | netif_wake_queue(dev); /* Inform upper layers. */ | |
1603 | if ((status & ( TX_OK | | |
1604 | TX_LOST_CRS | | |
1605 | TX_SQE_ERROR | | |
1606 | TX_LATE_COL | | |
1607 | TX_16_COL)) != TX_OK) { | |
1608 | if ((status & TX_OK) == 0) lp->stats.tx_errors++; | |
1609 | if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++; | |
1610 | if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++; | |
1611 | if (status & TX_LATE_COL) lp->stats.tx_window_errors++; | |
1612 | if (status & TX_16_COL) lp->stats.tx_aborted_errors++; | |
1613 | } | |
1614 | break; | |
1615 | case ISQ_BUFFER_EVENT: | |
1616 | if (status & READY_FOR_TX) { | |
1617 | /* we tried to transmit a packet earlier, | |
1618 | but inexplicably ran out of buffers. | |
1619 | That shouldn't happen since we only ever | |
1620 | load one packet. Shrug. Do the right | |
1621 | thing anyway. */ | |
1622 | netif_wake_queue(dev); /* Inform upper layers. */ | |
1623 | } | |
1624 | if (status & TX_UNDERRUN) { | |
1625 | if (net_debug > 0) printk("%s: transmit underrun\n", dev->name); | |
1626 | lp->send_underrun++; | |
1627 | if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381; | |
1628 | else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL; | |
1629 | /* transmit cycle is done, although | |
1630 | frame wasn't transmitted - this | |
1631 | avoids having to wait for the upper | |
1632 | layers to timeout on us, in the | |
1633 | event of a tx underrun */ | |
1634 | netif_wake_queue(dev); /* Inform upper layers. */ | |
1635 | } | |
1636 | #if ALLOW_DMA | |
1637 | if (lp->use_dma && (status & RX_DMA)) { | |
1638 | int count = readreg(dev, PP_DmaFrameCnt); | |
1639 | while(count) { | |
1640 | if (net_debug > 5) | |
1641 | printk("%s: receiving %d DMA frames\n", dev->name, count); | |
1642 | if (net_debug > 2 && count >1) | |
1643 | printk("%s: receiving %d DMA frames\n", dev->name, count); | |
1644 | dma_rx(dev); | |
1645 | if (--count == 0) | |
1646 | count = readreg(dev, PP_DmaFrameCnt); | |
1647 | if (net_debug > 2 && count > 0) | |
1648 | printk("%s: continuing with %d DMA frames\n", dev->name, count); | |
1649 | } | |
1650 | } | |
1651 | #endif | |
1652 | break; | |
1653 | case ISQ_RX_MISS_EVENT: | |
1654 | lp->stats.rx_missed_errors += (status >>6); | |
1655 | break; | |
1656 | case ISQ_TX_COL_EVENT: | |
1657 | lp->stats.collisions += (status >>6); | |
1658 | break; | |
1659 | } | |
1660 | } | |
1661 | return IRQ_RETVAL(handled); | |
1662 | } | |
1663 | ||
1664 | static void | |
1665 | count_rx_errors(int status, struct net_local *lp) | |
1666 | { | |
1667 | lp->stats.rx_errors++; | |
1668 | if (status & RX_RUNT) lp->stats.rx_length_errors++; | |
1669 | if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++; | |
1670 | if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT))) | |
1671 | /* per str 172 */ | |
1672 | lp->stats.rx_crc_errors++; | |
1673 | if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++; | |
1674 | return; | |
1675 | } | |
1676 | ||
1677 | /* We have a good packet(s), get it/them out of the buffers. */ | |
1678 | static void | |
1679 | net_rx(struct net_device *dev) | |
1680 | { | |
1681 | struct net_local *lp = netdev_priv(dev); | |
1682 | struct sk_buff *skb; | |
1683 | int status, length; | |
1684 | ||
1685 | int ioaddr = dev->base_addr; | |
fc8c7d79 LB |
1686 | status = readword(ioaddr, RX_FRAME_PORT); |
1687 | length = readword(ioaddr, RX_FRAME_PORT); | |
1da177e4 LT |
1688 | |
1689 | if ((status & RX_OK) == 0) { | |
1690 | count_rx_errors(status, lp); | |
1691 | return; | |
1692 | } | |
1693 | ||
1694 | /* Malloc up new buffer. */ | |
1695 | skb = dev_alloc_skb(length + 2); | |
1696 | if (skb == NULL) { | |
1697 | #if 0 /* Again, this seems a cruel thing to do */ | |
1698 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name); | |
1699 | #endif | |
1700 | lp->stats.rx_dropped++; | |
1701 | return; | |
1702 | } | |
1703 | skb_reserve(skb, 2); /* longword align L3 header */ | |
1da177e4 | 1704 | |
084f746a | 1705 | readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1); |
1da177e4 | 1706 | if (length & 1) |
fc8c7d79 | 1707 | skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT); |
1da177e4 LT |
1708 | |
1709 | if (net_debug > 3) { | |
1710 | printk( "%s: received %d byte packet of type %x\n", | |
1711 | dev->name, length, | |
1712 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); | |
1713 | } | |
1714 | ||
1715 | skb->protocol=eth_type_trans(skb,dev); | |
1716 | netif_rx(skb); | |
1717 | dev->last_rx = jiffies; | |
1718 | lp->stats.rx_packets++; | |
1719 | lp->stats.rx_bytes += length; | |
1720 | } | |
1721 | ||
1722 | #if ALLOW_DMA | |
1723 | static void release_dma_buff(struct net_local *lp) | |
1724 | { | |
1725 | if (lp->dma_buff) { | |
1726 | free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024)); | |
1727 | lp->dma_buff = NULL; | |
1728 | } | |
1729 | } | |
1730 | #endif | |
1731 | ||
1732 | /* The inverse routine to net_open(). */ | |
1733 | static int | |
1734 | net_close(struct net_device *dev) | |
1735 | { | |
1736 | #if ALLOW_DMA | |
1737 | struct net_local *lp = netdev_priv(dev); | |
1738 | #endif | |
1739 | ||
1740 | netif_stop_queue(dev); | |
6aa20a22 | 1741 | |
1da177e4 LT |
1742 | writereg(dev, PP_RxCFG, 0); |
1743 | writereg(dev, PP_TxCFG, 0); | |
1744 | writereg(dev, PP_BufCFG, 0); | |
1745 | writereg(dev, PP_BusCTL, 0); | |
1746 | ||
1747 | free_irq(dev->irq, dev); | |
1748 | ||
1749 | #if ALLOW_DMA | |
1750 | if (lp->use_dma && lp->dma) { | |
1751 | free_dma(dev->dma); | |
1752 | release_dma_buff(lp); | |
1753 | } | |
1754 | #endif | |
1755 | ||
1756 | /* Update the statistics here. */ | |
1757 | return 0; | |
1758 | } | |
1759 | ||
1760 | /* Get the current statistics. This may be called with the card open or | |
1761 | closed. */ | |
1762 | static struct net_device_stats * | |
1763 | net_get_stats(struct net_device *dev) | |
1764 | { | |
1765 | struct net_local *lp = netdev_priv(dev); | |
1766 | unsigned long flags; | |
1767 | ||
1768 | spin_lock_irqsave(&lp->lock, flags); | |
1769 | /* Update the statistics from the device registers. */ | |
1770 | lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6); | |
1771 | lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6); | |
1772 | spin_unlock_irqrestore(&lp->lock, flags); | |
1773 | ||
1774 | return &lp->stats; | |
1775 | } | |
1776 | ||
1777 | static void set_multicast_list(struct net_device *dev) | |
1778 | { | |
1779 | struct net_local *lp = netdev_priv(dev); | |
1780 | unsigned long flags; | |
1781 | ||
1782 | spin_lock_irqsave(&lp->lock, flags); | |
1783 | if(dev->flags&IFF_PROMISC) | |
1784 | { | |
1785 | lp->rx_mode = RX_ALL_ACCEPT; | |
1786 | } | |
1787 | else if((dev->flags&IFF_ALLMULTI)||dev->mc_list) | |
1788 | { | |
1789 | /* The multicast-accept list is initialized to accept-all, and we | |
1790 | rely on higher-level filtering for now. */ | |
1791 | lp->rx_mode = RX_MULTCAST_ACCEPT; | |
6aa20a22 | 1792 | } |
1da177e4 LT |
1793 | else |
1794 | lp->rx_mode = 0; | |
1795 | ||
1796 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode); | |
1797 | ||
1798 | /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */ | |
1799 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg | | |
1800 | (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0)); | |
1801 | spin_unlock_irqrestore(&lp->lock, flags); | |
1802 | } | |
1803 | ||
1804 | ||
1805 | static int set_mac_address(struct net_device *dev, void *p) | |
1806 | { | |
1807 | int i; | |
1808 | struct sockaddr *addr = p; | |
1809 | ||
1da177e4 LT |
1810 | if (netif_running(dev)) |
1811 | return -EBUSY; | |
1812 | ||
1813 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1814 | ||
1815 | if (net_debug) { | |
0795af57 JP |
1816 | DECLARE_MAC_BUF(mac); |
1817 | printk("%s: Setting MAC address to %s.\n", | |
1818 | dev->name, print_mac(mac, dev->dev_addr)); | |
1da177e4 LT |
1819 | } |
1820 | /* set the Ethernet address */ | |
1821 | for (i=0; i < ETH_ALEN/2; i++) | |
1822 | writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); | |
1823 | ||
1824 | return 0; | |
1825 | } | |
1826 | ||
1827 | #ifdef MODULE | |
1828 | ||
1829 | static struct net_device *dev_cs89x0; | |
1830 | ||
1831 | /* | |
6aa20a22 JG |
1832 | * Support the 'debug' module parm even if we're compiled for non-debug to |
1833 | * avoid breaking someone's startup scripts | |
1da177e4 LT |
1834 | */ |
1835 | ||
1836 | static int io; | |
1837 | static int irq; | |
1838 | static int debug; | |
1839 | static char media[8]; | |
1840 | static int duplex=-1; | |
1841 | ||
1842 | static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */ | |
1843 | static int dma; | |
1844 | static int dmasize=16; /* or 64 */ | |
1845 | ||
1846 | module_param(io, int, 0); | |
1847 | module_param(irq, int, 0); | |
1848 | module_param(debug, int, 0); | |
1849 | module_param_string(media, media, sizeof(media), 0); | |
1850 | module_param(duplex, int, 0); | |
1851 | module_param(dma , int, 0); | |
1852 | module_param(dmasize , int, 0); | |
1853 | module_param(use_dma , int, 0); | |
1854 | MODULE_PARM_DESC(io, "cs89x0 I/O base address"); | |
1855 | MODULE_PARM_DESC(irq, "cs89x0 IRQ number"); | |
1856 | #if DEBUGGING | |
1857 | MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)"); | |
1858 | #else | |
1859 | MODULE_PARM_DESC(debug, "(ignored)"); | |
1860 | #endif | |
1861 | MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)"); | |
1862 | /* No other value than -1 for duplex seems to be currently interpreted */ | |
1863 | MODULE_PARM_DESC(duplex, "(ignored)"); | |
1864 | #if ALLOW_DMA | |
1865 | MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0"); | |
1866 | MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0"); | |
1867 | MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)"); | |
1868 | #else | |
1869 | MODULE_PARM_DESC(dma , "(ignored)"); | |
1870 | MODULE_PARM_DESC(dmasize , "(ignored)"); | |
1871 | MODULE_PARM_DESC(use_dma , "(ignored)"); | |
1872 | #endif | |
1873 | ||
1874 | MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>"); | |
1875 | MODULE_LICENSE("GPL"); | |
1876 | ||
1877 | ||
1878 | /* | |
1879 | * media=t - specify media type | |
1880 | or media=2 | |
1881 | or media=aui | |
1882 | or medai=auto | |
1883 | * duplex=0 - specify forced half/full/autonegotiate duplex | |
1884 | * debug=# - debug level | |
1885 | ||
1886 | ||
1887 | * Default Chip Configuration: | |
1888 | * DMA Burst = enabled | |
1889 | * IOCHRDY Enabled = enabled | |
1890 | * UseSA = enabled | |
1891 | * CS8900 defaults to half-duplex if not specified on command-line | |
1892 | * CS8920 defaults to autoneg if not specified on command-line | |
1893 | * Use reset defaults for other config parameters | |
1894 | ||
1895 | * Assumptions: | |
1896 | * media type specified is supported (circuitry is present) | |
1897 | * if memory address is > 1MB, then required mem decode hw is present | |
1898 | * if 10B-2, then agent other than driver will enable DC/DC converter | |
1899 | (hw or software util) | |
1900 | ||
1901 | ||
1902 | */ | |
1903 | ||
e26c129a | 1904 | int __init init_module(void) |
1da177e4 LT |
1905 | { |
1906 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
1907 | struct net_local *lp; | |
1908 | int ret = 0; | |
1909 | ||
1910 | #if DEBUGGING | |
1911 | net_debug = debug; | |
1912 | #else | |
1913 | debug = 0; | |
1914 | #endif | |
1915 | if (!dev) | |
1916 | return -ENOMEM; | |
1917 | ||
1918 | dev->irq = irq; | |
1919 | dev->base_addr = io; | |
1920 | lp = netdev_priv(dev); | |
1921 | ||
1922 | #if ALLOW_DMA | |
1923 | if (use_dma) { | |
1924 | lp->use_dma = use_dma; | |
1925 | lp->dma = dma; | |
1926 | lp->dmasize = dmasize; | |
1927 | } | |
1928 | #endif | |
1929 | ||
1930 | spin_lock_init(&lp->lock); | |
1931 | ||
1932 | /* boy, they'd better get these right */ | |
1933 | if (!strcmp(media, "rj45")) | |
1934 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; | |
1935 | else if (!strcmp(media, "aui")) | |
1936 | lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI; | |
1937 | else if (!strcmp(media, "bnc")) | |
1938 | lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2; | |
1939 | else | |
1940 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; | |
1941 | ||
1942 | if (duplex==-1) | |
1943 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; | |
1944 | ||
1945 | if (io == 0) { | |
1946 | printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n"); | |
1947 | printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n"); | |
1948 | ret = -EPERM; | |
1949 | goto out; | |
1950 | } else if (io <= 0x1ff) { | |
1951 | ret = -ENXIO; | |
1952 | goto out; | |
1953 | } | |
1954 | ||
1955 | #if ALLOW_DMA | |
1956 | if (use_dma && dmasize != 16 && dmasize != 64) { | |
1957 | printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize); | |
1958 | ret = -EPERM; | |
1959 | goto out; | |
1960 | } | |
1961 | #endif | |
1962 | ret = cs89x0_probe1(dev, io, 1); | |
1963 | if (ret) | |
1964 | goto out; | |
1965 | ||
1da177e4 LT |
1966 | dev_cs89x0 = dev; |
1967 | return 0; | |
1968 | out: | |
1969 | free_netdev(dev); | |
1970 | return ret; | |
1971 | } | |
1972 | ||
afc8eb46 | 1973 | void __exit |
1da177e4 LT |
1974 | cleanup_module(void) |
1975 | { | |
1976 | unregister_netdev(dev_cs89x0); | |
fc8c7d79 | 1977 | writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID); |
1da177e4 LT |
1978 | release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT); |
1979 | free_netdev(dev_cs89x0); | |
1980 | } | |
1981 | #endif /* MODULE */ | |
6aa20a22 | 1982 | |
1da177e4 LT |
1983 | /* |
1984 | * Local variables: | |
1985 | * version-control: t | |
1986 | * kept-new-versions: 5 | |
1987 | * c-indent-level: 8 | |
1988 | * tab-width: 8 | |
1989 | * End: | |
1990 | * | |
1991 | */ |