Commit | Line | Data |
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1da177e4 | 1 | /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0 |
204a38ab JP |
2 | * driver for linux. |
3 | * Written 1996 by Russell Nelson, with reference to skeleton.c | |
4 | * written 1993-1994 by Donald Becker. | |
5 | * | |
6 | * This software may be used and distributed according to the terms | |
7 | * of the GNU General Public License, incorporated herein by reference. | |
8 | * | |
9 | * The author may be reached at nelson@crynwr.com, Crynwr | |
10 | * Software, 521 Pleasant Valley Rd., Potsdam, NY 13676 | |
11 | * | |
12 | * Other contributors: | |
13 | * Mike Cruse : mcruse@cti-ltd.com | |
14 | * Russ Nelson | |
15 | * Melody Lee : ethernet@crystal.cirrus.com | |
16 | * Alan Cox | |
17 | * Andrew Morton | |
18 | * Oskar Schirmer : oskar@scara.com | |
19 | * Deepak Saxena : dsaxena@plexity.net | |
20 | * Dmitry Pervushin : dpervushin@ru.mvista.com | |
21 | * Deepak Saxena : dsaxena@plexity.net | |
22 | * Domenico Andreoli : cavokz@gmail.com | |
1da177e4 LT |
23 | */ |
24 | ||
1da177e4 LT |
25 | |
26 | /* | |
27 | * Set this to zero to disable DMA code | |
28 | * | |
29 | * Note that even if DMA is turned off we still support the 'dma' and 'use_dma' | |
30 | * module options so we don't break any startup scripts. | |
31 | */ | |
91e1c463 | 32 | #ifndef CONFIG_ISA_DMA_API |
1da177e4 LT |
33 | #define ALLOW_DMA 0 |
34 | #else | |
35 | #define ALLOW_DMA 1 | |
36 | #endif | |
37 | ||
38 | /* | |
39 | * Set this to zero to remove all the debug statements via | |
40 | * dead code elimination | |
41 | */ | |
42 | #define DEBUGGING 1 | |
43 | ||
204a38ab JP |
44 | /* Sources: |
45 | * Crynwr packet driver epktisa. | |
46 | * Crystal Semiconductor data sheets. | |
47 | */ | |
1da177e4 | 48 | |
dd92b9ad JP |
49 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
50 | ||
e9460a9e JB |
51 | #include <linux/module.h> |
52 | #include <linux/printk.h> | |
1da177e4 LT |
53 | #include <linux/errno.h> |
54 | #include <linux/netdevice.h> | |
55 | #include <linux/etherdevice.h> | |
e9460a9e | 56 | #include <linux/platform_device.h> |
1da177e4 LT |
57 | #include <linux/kernel.h> |
58 | #include <linux/types.h> | |
59 | #include <linux/fcntl.h> | |
60 | #include <linux/interrupt.h> | |
61 | #include <linux/ioport.h> | |
62 | #include <linux/in.h> | |
0f9a2a9c | 63 | #include <linux/jiffies.h> |
1da177e4 | 64 | #include <linux/skbuff.h> |
1da177e4 LT |
65 | #include <linux/spinlock.h> |
66 | #include <linux/string.h> | |
67 | #include <linux/init.h> | |
68 | #include <linux/bitops.h> | |
69 | #include <linux/delay.h> | |
5a0e3ad6 | 70 | #include <linux/gfp.h> |
ca034bcd | 71 | #include <linux/io.h> |
1da177e4 | 72 | |
7625d483 | 73 | #include <asm/irq.h> |
e9460a9e | 74 | #include <linux/atomic.h> |
1da177e4 LT |
75 | #if ALLOW_DMA |
76 | #include <asm/dma.h> | |
77 | #endif | |
78 | ||
79 | #include "cs89x0.h" | |
80 | ||
808e9a77 JP |
81 | #define cs89_dbg(val, level, fmt, ...) \ |
82 | do { \ | |
83 | if (val <= net_debug) \ | |
84 | pr_##level(fmt, ##__VA_ARGS__); \ | |
85 | } while (0) | |
86 | ||
1da177e4 | 87 | static char version[] __initdata = |
808e9a77 | 88 | "v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton"; |
1da177e4 LT |
89 | |
90 | #define DRV_NAME "cs89x0" | |
91 | ||
92 | /* First, a few definitions that the brave might change. | |
204a38ab JP |
93 | * A zero-terminated list of I/O addresses to be probed. Some special flags.. |
94 | * Addr & 1 = Read back the address port, look for signature and reset | |
95 | * the page window before probing | |
96 | * Addr & 3 = Reset the page window and probe | |
97 | * The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space, | |
98 | * but it is possible that a Cirrus board could be plugged into the ISA | |
99 | * slots. | |
100 | */ | |
6aa20a22 | 101 | /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps |
204a38ab JP |
102 | * them to system IRQ numbers. This mapping is card specific and is set to |
103 | * the configuration of the Cirrus Eval board for this chip. | |
104 | */ | |
e9460a9e | 105 | #ifndef CONFIG_CS89x0_PLATFORM |
ca034bcd JP |
106 | static unsigned int netcard_portlist[] __used __initdata = { |
107 | 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, | |
108 | 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0 | |
109 | }; | |
110 | static unsigned int cs8900_irq_map[] = { | |
111 | 10, 11, 12, 5 | |
112 | }; | |
1da177e4 LT |
113 | #endif |
114 | ||
115 | #if DEBUGGING | |
116 | static unsigned int net_debug = DEBUGGING; | |
117 | #else | |
118 | #define net_debug 0 /* gcc will remove all the debug code for us */ | |
119 | #endif | |
120 | ||
121 | /* The number of low I/O ports used by the ethercard. */ | |
122 | #define NETCARD_IO_EXTENT 16 | |
123 | ||
124 | /* we allow the user to override various values normally set in the EEPROM */ | |
125 | #define FORCE_RJ45 0x0001 /* pick one of these three */ | |
126 | #define FORCE_AUI 0x0002 | |
127 | #define FORCE_BNC 0x0004 | |
128 | ||
129 | #define FORCE_AUTO 0x0010 /* pick one of these three */ | |
130 | #define FORCE_HALF 0x0020 | |
131 | #define FORCE_FULL 0x0030 | |
132 | ||
133 | /* Information that need to be kept for each board. */ | |
134 | struct net_local { | |
1da177e4 LT |
135 | int chip_type; /* one of: CS8900, CS8920, CS8920M */ |
136 | char chip_revision; /* revision letter of the chip ('A'...) */ | |
137 | int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */ | |
138 | int auto_neg_cnf; /* auto-negotiation word from EEPROM */ | |
139 | int adapter_cnf; /* adapter configuration from EEPROM */ | |
140 | int isa_config; /* ISA configuration from EEPROM */ | |
141 | int irq_map; /* IRQ map from EEPROM */ | |
142 | int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */ | |
143 | int curr_rx_cfg; /* a copy of PP_RxCFG */ | |
144 | int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */ | |
145 | int send_underrun; /* keep track of how many underruns in a row we get */ | |
146 | int force; /* force various values; see FORCE* above. */ | |
147 | spinlock_t lock; | |
09dcd604 | 148 | void __iomem *virt_addr;/* CS89x0 virtual address. */ |
1da177e4 LT |
149 | #if ALLOW_DMA |
150 | int use_dma; /* Flag: we're using dma */ | |
151 | int dma; /* DMA channel */ | |
152 | int dmasize; /* 16 or 64 */ | |
153 | unsigned char *dma_buff; /* points to the beginning of the buffer */ | |
154 | unsigned char *end_dma_buff; /* points to the end of the buffer */ | |
155 | unsigned char *rx_dma_ptr; /* points to the next packet */ | |
156 | #endif | |
157 | }; | |
158 | ||
1da177e4 LT |
159 | /* Example routines you must write ;->. */ |
160 | #define tx_done(dev) 1 | |
161 | ||
162 | /* | |
163 | * Permit 'cs89x0_dma=N' in the kernel boot environment | |
164 | */ | |
09dcd604 JB |
165 | #if !defined(MODULE) |
166 | #if ALLOW_DMA | |
1da177e4 LT |
167 | static int g_cs89x0_dma; |
168 | ||
169 | static int __init dma_fn(char *str) | |
170 | { | |
204a38ab | 171 | g_cs89x0_dma = simple_strtol(str, NULL, 0); |
1da177e4 LT |
172 | return 1; |
173 | } | |
174 | ||
175 | __setup("cs89x0_dma=", dma_fn); | |
09dcd604 | 176 | #endif /* ALLOW_DMA */ |
1da177e4 | 177 | |
1da177e4 LT |
178 | static int g_cs89x0_media__force; |
179 | ||
180 | static int __init media_fn(char *str) | |
181 | { | |
ca034bcd JP |
182 | if (!strcmp(str, "rj45")) |
183 | g_cs89x0_media__force = FORCE_RJ45; | |
184 | else if (!strcmp(str, "aui")) | |
185 | g_cs89x0_media__force = FORCE_AUI; | |
186 | else if (!strcmp(str, "bnc")) | |
187 | g_cs89x0_media__force = FORCE_BNC; | |
188 | ||
1da177e4 LT |
189 | return 1; |
190 | } | |
191 | ||
192 | __setup("cs89x0_media=", media_fn); | |
e9460a9e | 193 | #endif |
1da177e4 | 194 | |
09dcd604 | 195 | static void readwords(struct net_local *lp, int portno, void *buf, int length) |
084f746a LB |
196 | { |
197 | u8 *buf8 = (u8 *)buf; | |
198 | ||
199 | do { | |
a07f0dbe | 200 | u16 tmp16; |
084f746a | 201 | |
09dcd604 | 202 | tmp16 = ioread16(lp->virt_addr + portno); |
a07f0dbe LB |
203 | *buf8++ = (u8)tmp16; |
204 | *buf8++ = (u8)(tmp16 >> 8); | |
084f746a LB |
205 | } while (--length); |
206 | } | |
207 | ||
09dcd604 | 208 | static void writewords(struct net_local *lp, int portno, void *buf, int length) |
084f746a LB |
209 | { |
210 | u8 *buf8 = (u8 *)buf; | |
211 | ||
212 | do { | |
a07f0dbe | 213 | u16 tmp16; |
084f746a | 214 | |
a07f0dbe LB |
215 | tmp16 = *buf8++; |
216 | tmp16 |= (*buf8++) << 8; | |
09dcd604 | 217 | iowrite16(tmp16, lp->virt_addr + portno); |
084f746a LB |
218 | } while (--length); |
219 | } | |
220 | ||
a07f0dbe LB |
221 | static u16 |
222 | readreg(struct net_device *dev, u16 regno) | |
1da177e4 | 223 | { |
09dcd604 JB |
224 | struct net_local *lp = netdev_priv(dev); |
225 | ||
226 | iowrite16(regno, lp->virt_addr + ADD_PORT); | |
227 | return ioread16(lp->virt_addr + DATA_PORT); | |
1da177e4 LT |
228 | } |
229 | ||
230 | static void | |
a07f0dbe | 231 | writereg(struct net_device *dev, u16 regno, u16 value) |
1da177e4 | 232 | { |
09dcd604 JB |
233 | struct net_local *lp = netdev_priv(dev); |
234 | ||
235 | iowrite16(regno, lp->virt_addr + ADD_PORT); | |
236 | iowrite16(value, lp->virt_addr + DATA_PORT); | |
1da177e4 LT |
237 | } |
238 | ||
239 | static int __init | |
240 | wait_eeprom_ready(struct net_device *dev) | |
241 | { | |
0f9a2a9c | 242 | unsigned long timeout = jiffies; |
204a38ab JP |
243 | /* check to see if the EEPROM is ready, |
244 | * a timeout is used just in case EEPROM is ready when | |
245 | * SI_BUSY in the PP_SelfST is clear | |
246 | */ | |
247 | while (readreg(dev, PP_SelfST) & SI_BUSY) | |
0f9a2a9c | 248 | if (time_after_eq(jiffies, timeout + 40)) |
1da177e4 LT |
249 | return -1; |
250 | return 0; | |
251 | } | |
252 | ||
253 | static int __init | |
254 | get_eeprom_data(struct net_device *dev, int off, int len, int *buffer) | |
255 | { | |
256 | int i; | |
257 | ||
6fba180e | 258 | cs89_dbg(3, info, "EEPROM data from %x for %x:", off, len); |
1da177e4 | 259 | for (i = 0; i < len; i++) { |
ca034bcd JP |
260 | if (wait_eeprom_ready(dev) < 0) |
261 | return -1; | |
1da177e4 LT |
262 | /* Now send the EEPROM read command and EEPROM location to read */ |
263 | writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD); | |
ca034bcd JP |
264 | if (wait_eeprom_ready(dev) < 0) |
265 | return -1; | |
1da177e4 | 266 | buffer[i] = readreg(dev, PP_EEData); |
6fba180e | 267 | cs89_dbg(3, cont, " %04x", buffer[i]); |
1da177e4 | 268 | } |
808e9a77 | 269 | cs89_dbg(3, cont, "\n"); |
204a38ab | 270 | return 0; |
1da177e4 LT |
271 | } |
272 | ||
273 | static int __init | |
274 | get_eeprom_cksum(int off, int len, int *buffer) | |
275 | { | |
276 | int i, cksum; | |
277 | ||
278 | cksum = 0; | |
279 | for (i = 0; i < len; i++) | |
280 | cksum += buffer[i]; | |
281 | cksum &= 0xffff; | |
282 | if (cksum == 0) | |
283 | return 0; | |
284 | return -1; | |
285 | } | |
286 | ||
6fba180e JP |
287 | static void |
288 | write_irq(struct net_device *dev, int chip_type, int irq) | |
6f519165 | 289 | { |
6fba180e | 290 | int i; |
6f519165 | 291 | |
6fba180e JP |
292 | if (chip_type == CS8900) { |
293 | #ifndef CONFIG_CS89x0_PLATFORM | |
294 | /* Search the mapping table for the corresponding IRQ pin. */ | |
295 | for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++) | |
296 | if (cs8900_irq_map[i] == irq) | |
297 | break; | |
298 | /* Not found */ | |
299 | if (i == ARRAY_SIZE(cs8900_irq_map)) | |
300 | i = 3; | |
301 | #else | |
302 | /* INTRQ0 pin is used for interrupt generation. */ | |
303 | i = 0; | |
15d23e7a | 304 | #endif |
6fba180e JP |
305 | writereg(dev, PP_CS8900_ISAINT, i); |
306 | } else { | |
307 | writereg(dev, PP_CS8920_ISAINT, irq); | |
308 | } | |
309 | } | |
15d23e7a | 310 | |
6fba180e JP |
311 | static void |
312 | count_rx_errors(int status, struct net_device *dev) | |
1da177e4 | 313 | { |
6fba180e JP |
314 | dev->stats.rx_errors++; |
315 | if (status & RX_RUNT) | |
316 | dev->stats.rx_length_errors++; | |
317 | if (status & RX_EXTRA_DATA) | |
318 | dev->stats.rx_length_errors++; | |
319 | if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA | RX_RUNT))) | |
320 | /* per str 172 */ | |
321 | dev->stats.rx_crc_errors++; | |
322 | if (status & RX_DRIBBLE) | |
323 | dev->stats.rx_frame_errors++; | |
324 | } | |
325 | ||
326 | /********************************* | |
327 | * This page contains DMA routines | |
328 | *********************************/ | |
1da177e4 | 329 | |
1da177e4 | 330 | #if ALLOW_DMA |
6fba180e JP |
331 | |
332 | #define dma_page_eq(ptr1, ptr2) ((long)(ptr1) >> 17 == (long)(ptr2) >> 17) | |
333 | ||
334 | static void | |
335 | get_dma_channel(struct net_device *dev) | |
336 | { | |
337 | struct net_local *lp = netdev_priv(dev); | |
338 | ||
339 | if (lp->dma) { | |
340 | dev->dma = lp->dma; | |
341 | lp->isa_config |= ISA_RxDMA; | |
342 | } else { | |
343 | if ((lp->isa_config & ANY_ISA_DMA) == 0) | |
344 | return; | |
345 | dev->dma = lp->isa_config & DMA_NO_MASK; | |
346 | if (lp->chip_type == CS8900) | |
347 | dev->dma += 5; | |
348 | if (dev->dma < 5 || dev->dma > 7) { | |
349 | lp->isa_config &= ~ANY_ISA_DMA; | |
350 | return; | |
1da177e4 | 351 | } |
204a38ab | 352 | } |
6fba180e | 353 | } |
1da177e4 | 354 | |
6fba180e JP |
355 | static void |
356 | write_dma(struct net_device *dev, int chip_type, int dma) | |
357 | { | |
358 | struct net_local *lp = netdev_priv(dev); | |
359 | if ((lp->isa_config & ANY_ISA_DMA) == 0) | |
360 | return; | |
361 | if (chip_type == CS8900) | |
362 | writereg(dev, PP_CS8900_ISADMA, dma - 5); | |
363 | else | |
364 | writereg(dev, PP_CS8920_ISADMA, dma); | |
365 | } | |
1da177e4 | 366 | |
6fba180e JP |
367 | static void |
368 | set_dma_cfg(struct net_device *dev) | |
369 | { | |
370 | struct net_local *lp = netdev_priv(dev); | |
1da177e4 | 371 | |
6fba180e JP |
372 | if (lp->use_dma) { |
373 | if ((lp->isa_config & ANY_ISA_DMA) == 0) { | |
374 | cs89_dbg(3, err, "set_dma_cfg(): no DMA\n"); | |
375 | return; | |
376 | } | |
377 | if (lp->isa_config & ISA_RxDMA) { | |
378 | lp->curr_rx_cfg |= RX_DMA_ONLY; | |
379 | cs89_dbg(3, info, "set_dma_cfg(): RX_DMA_ONLY\n"); | |
380 | } else { | |
381 | lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */ | |
382 | cs89_dbg(3, info, "set_dma_cfg(): AUTO_RX_DMA\n"); | |
383 | } | |
384 | } | |
385 | } | |
1da177e4 | 386 | |
6fba180e JP |
387 | static int |
388 | dma_bufcfg(struct net_device *dev) | |
389 | { | |
390 | struct net_local *lp = netdev_priv(dev); | |
391 | if (lp->use_dma) | |
392 | return (lp->isa_config & ANY_ISA_DMA) ? RX_DMA_ENBL : 0; | |
393 | else | |
394 | return 0; | |
395 | } | |
1da177e4 | 396 | |
6fba180e JP |
397 | static int |
398 | dma_busctl(struct net_device *dev) | |
399 | { | |
400 | int retval = 0; | |
401 | struct net_local *lp = netdev_priv(dev); | |
402 | if (lp->use_dma) { | |
403 | if (lp->isa_config & ANY_ISA_DMA) | |
404 | retval |= RESET_RX_DMA; /* Reset the DMA pointer */ | |
405 | if (lp->isa_config & DMA_BURST) | |
406 | retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */ | |
407 | if (lp->dmasize == 64) | |
408 | retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */ | |
409 | retval |= MEMORY_ON; /* we need memory enabled to use DMA. */ | |
410 | } | |
411 | return retval; | |
412 | } | |
1da177e4 | 413 | |
6fba180e JP |
414 | static void |
415 | dma_rx(struct net_device *dev) | |
416 | { | |
417 | struct net_local *lp = netdev_priv(dev); | |
418 | struct sk_buff *skb; | |
419 | int status, length; | |
420 | unsigned char *bp = lp->rx_dma_ptr; | |
1da177e4 | 421 | |
6fba180e JP |
422 | status = bp[0] + (bp[1] << 8); |
423 | length = bp[2] + (bp[3] << 8); | |
424 | bp += 4; | |
1da177e4 | 425 | |
6fba180e JP |
426 | cs89_dbg(5, debug, "%s: receiving DMA packet at %lx, status %x, length %x\n", |
427 | dev->name, (unsigned long)bp, status, length); | |
6aa20a22 | 428 | |
6fba180e JP |
429 | if ((status & RX_OK) == 0) { |
430 | count_rx_errors(status, dev); | |
431 | goto skip_this_frame; | |
432 | } | |
204a38ab | 433 | |
6fba180e JP |
434 | /* Malloc up new buffer. */ |
435 | skb = netdev_alloc_skb(dev, length + 2); | |
436 | if (skb == NULL) { | |
6fba180e | 437 | dev->stats.rx_dropped++; |
6aa20a22 | 438 | |
6fba180e JP |
439 | /* AKPM: advance bp to the next frame */ |
440 | skip_this_frame: | |
441 | bp += (length + 3) & ~3; | |
442 | if (bp >= lp->end_dma_buff) | |
443 | bp -= lp->dmasize * 1024; | |
444 | lp->rx_dma_ptr = bp; | |
445 | return; | |
446 | } | |
447 | skb_reserve(skb, 2); /* longword align L3 header */ | |
6aa20a22 | 448 | |
6fba180e JP |
449 | if (bp + length > lp->end_dma_buff) { |
450 | int semi_cnt = lp->end_dma_buff - bp; | |
451 | memcpy(skb_put(skb, semi_cnt), bp, semi_cnt); | |
452 | memcpy(skb_put(skb, length - semi_cnt), lp->dma_buff, | |
453 | length - semi_cnt); | |
204a38ab | 454 | } else { |
6fba180e | 455 | memcpy(skb_put(skb, length), bp, length); |
204a38ab | 456 | } |
6fba180e JP |
457 | bp += (length + 3) & ~3; |
458 | if (bp >= lp->end_dma_buff) | |
459 | bp -= lp->dmasize*1024; | |
460 | lp->rx_dma_ptr = bp; | |
1da177e4 | 461 | |
6fba180e JP |
462 | cs89_dbg(3, info, "%s: received %d byte DMA packet of type %x\n", |
463 | dev->name, length, | |
464 | ((skb->data[ETH_ALEN + ETH_ALEN] << 8) | | |
465 | skb->data[ETH_ALEN + ETH_ALEN + 1])); | |
1da177e4 | 466 | |
6fba180e JP |
467 | skb->protocol = eth_type_trans(skb, dev); |
468 | netif_rx(skb); | |
469 | dev->stats.rx_packets++; | |
470 | dev->stats.rx_bytes += length; | |
471 | } | |
1da177e4 | 472 | |
6fba180e JP |
473 | static void release_dma_buff(struct net_local *lp) |
474 | { | |
475 | if (lp->dma_buff) { | |
476 | free_pages((unsigned long)(lp->dma_buff), | |
477 | get_order(lp->dmasize * 1024)); | |
478 | lp->dma_buff = NULL; | |
479 | } | |
480 | } | |
1da177e4 | 481 | |
6fba180e | 482 | #endif /* ALLOW_DMA */ |
1da177e4 | 483 | |
6fba180e JP |
484 | static void |
485 | control_dc_dc(struct net_device *dev, int on_not_off) | |
486 | { | |
487 | struct net_local *lp = netdev_priv(dev); | |
488 | unsigned int selfcontrol; | |
0f9a2a9c | 489 | unsigned long timenow = jiffies; |
6fba180e JP |
490 | /* control the DC to DC convertor in the SelfControl register. |
491 | * Note: This is hooked up to a general purpose pin, might not | |
492 | * always be a DC to DC convertor. | |
204a38ab | 493 | */ |
1da177e4 | 494 | |
6fba180e JP |
495 | selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */ |
496 | if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off) | |
497 | selfcontrol |= HCB1; | |
498 | else | |
499 | selfcontrol &= ~HCB1; | |
500 | writereg(dev, PP_SelfCTL, selfcontrol); | |
6aa20a22 | 501 | |
6fba180e | 502 | /* Wait for the DC/DC converter to power up - 500ms */ |
0f9a2a9c | 503 | while (time_before(jiffies, timenow + HZ)) |
6fba180e JP |
504 | ; |
505 | } | |
1da177e4 | 506 | |
6fba180e JP |
507 | /* send a test packet - return true if carrier bits are ok */ |
508 | static int | |
509 | send_test_pkt(struct net_device *dev) | |
510 | { | |
511 | struct net_local *lp = netdev_priv(dev); | |
512 | char test_packet[] = { | |
513 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
514 | 0, 46, /* A 46 in network order */ | |
515 | 0, 0, /* DSAP=0 & SSAP=0 fields */ | |
516 | 0xf3, 0 /* Control (Test Req + P bit set) */ | |
517 | }; | |
0f9a2a9c | 518 | unsigned long timenow = jiffies; |
1da177e4 | 519 | |
6fba180e | 520 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON); |
1da177e4 | 521 | |
6fba180e JP |
522 | memcpy(test_packet, dev->dev_addr, ETH_ALEN); |
523 | memcpy(test_packet + ETH_ALEN, dev->dev_addr, ETH_ALEN); | |
1da177e4 | 524 | |
6fba180e JP |
525 | iowrite16(TX_AFTER_ALL, lp->virt_addr + TX_CMD_PORT); |
526 | iowrite16(ETH_ZLEN, lp->virt_addr + TX_LEN_PORT); | |
1da177e4 | 527 | |
6fba180e | 528 | /* Test to see if the chip has allocated memory for the packet */ |
0f9a2a9c | 529 | while (time_before(jiffies, timenow + 5)) |
6fba180e JP |
530 | if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW) |
531 | break; | |
0f9a2a9c | 532 | if (time_after_eq(jiffies, timenow + 5)) |
6fba180e | 533 | return 0; /* this shouldn't happen */ |
1da177e4 | 534 | |
6fba180e JP |
535 | /* Write the contents of the packet */ |
536 | writewords(lp, TX_FRAME_PORT, test_packet, (ETH_ZLEN + 1) >> 1); | |
b1fc5505 | 537 | |
6fba180e JP |
538 | cs89_dbg(1, debug, "Sending test packet "); |
539 | /* wait a couple of jiffies for packet to be received */ | |
0f9a2a9c | 540 | for (timenow = jiffies; time_before(jiffies, timenow + 3);) |
6fba180e JP |
541 | ; |
542 | if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { | |
543 | cs89_dbg(1, cont, "succeeded\n"); | |
544 | return 1; | |
545 | } | |
546 | cs89_dbg(1, cont, "failed\n"); | |
1da177e4 | 547 | return 0; |
1da177e4 LT |
548 | } |
549 | ||
6fba180e JP |
550 | #define DETECTED_NONE 0 |
551 | #define DETECTED_RJ45H 1 | |
552 | #define DETECTED_RJ45F 2 | |
553 | #define DETECTED_AUI 3 | |
554 | #define DETECTED_BNC 4 | |
555 | ||
556 | static int | |
557 | detect_tp(struct net_device *dev) | |
09dcd604 JB |
558 | { |
559 | struct net_local *lp = netdev_priv(dev); | |
0f9a2a9c | 560 | unsigned long timenow = jiffies; |
6fba180e | 561 | int fdx; |
09dcd604 | 562 | |
6fba180e | 563 | cs89_dbg(1, debug, "%s: Attempting TP\n", dev->name); |
09dcd604 | 564 | |
6fba180e JP |
565 | /* If connected to another full duplex capable 10-Base-T card |
566 | * the link pulses seem to be lost when the auto detect bit in | |
567 | * the LineCTL is set. To overcome this the auto detect bit will | |
568 | * be cleared whilst testing the 10-Base-T interface. This would | |
569 | * not be necessary for the sparrow chip but is simpler to do it | |
570 | * anyway. | |
204a38ab | 571 | */ |
6fba180e JP |
572 | writereg(dev, PP_LineCTL, lp->linectl & ~AUI_ONLY); |
573 | control_dc_dc(dev, 0); | |
09dcd604 | 574 | |
6fba180e JP |
575 | /* Delay for the hardware to work out if the TP cable is present |
576 | * - 150ms | |
577 | */ | |
0f9a2a9c | 578 | for (timenow = jiffies; time_before(jiffies, timenow + 15);) |
6fba180e JP |
579 | ; |
580 | if ((readreg(dev, PP_LineST) & LINK_OK) == 0) | |
581 | return DETECTED_NONE; | |
09dcd604 | 582 | |
6fba180e JP |
583 | if (lp->chip_type == CS8900) { |
584 | switch (lp->force & 0xf0) { | |
585 | #if 0 | |
586 | case FORCE_AUTO: | |
587 | pr_info("%s: cs8900 doesn't autonegotiate\n", | |
588 | dev->name); | |
589 | return DETECTED_NONE; | |
590 | #endif | |
591 | /* CS8900 doesn't support AUTO, change to HALF*/ | |
592 | case FORCE_AUTO: | |
593 | lp->force &= ~FORCE_AUTO; | |
594 | lp->force |= FORCE_HALF; | |
595 | break; | |
596 | case FORCE_HALF: | |
597 | break; | |
598 | case FORCE_FULL: | |
599 | writereg(dev, PP_TestCTL, | |
600 | readreg(dev, PP_TestCTL) | FDX_8900); | |
601 | break; | |
602 | } | |
603 | fdx = readreg(dev, PP_TestCTL) & FDX_8900; | |
09dcd604 | 604 | } else { |
6fba180e JP |
605 | switch (lp->force & 0xf0) { |
606 | case FORCE_AUTO: | |
607 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; | |
608 | break; | |
609 | case FORCE_HALF: | |
610 | lp->auto_neg_cnf = 0; | |
611 | break; | |
612 | case FORCE_FULL: | |
613 | lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX; | |
614 | break; | |
09dcd604 | 615 | } |
1da177e4 | 616 | |
6fba180e | 617 | writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK); |
1da177e4 | 618 | |
6fba180e JP |
619 | if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) { |
620 | pr_info("%s: negotiating duplex...\n", dev->name); | |
621 | while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) { | |
0f9a2a9c | 622 | if (time_after(jiffies, timenow + 4000)) { |
6fba180e JP |
623 | pr_err("**** Full / half duplex auto-negotiation timed out ****\n"); |
624 | break; | |
625 | } | |
626 | } | |
1da177e4 | 627 | } |
6fba180e | 628 | fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE; |
1da177e4 | 629 | } |
6fba180e JP |
630 | if (fdx) |
631 | return DETECTED_RJ45F; | |
ca034bcd | 632 | else |
6fba180e | 633 | return DETECTED_RJ45H; |
1da177e4 LT |
634 | } |
635 | ||
6fba180e JP |
636 | static int |
637 | detect_bnc(struct net_device *dev) | |
1da177e4 LT |
638 | { |
639 | struct net_local *lp = netdev_priv(dev); | |
640 | ||
6fba180e JP |
641 | cs89_dbg(1, debug, "%s: Attempting BNC\n", dev->name); |
642 | control_dc_dc(dev, 1); | |
1da177e4 | 643 | |
6fba180e JP |
644 | writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY); |
645 | ||
646 | if (send_test_pkt(dev)) | |
647 | return DETECTED_BNC; | |
1da177e4 | 648 | else |
6fba180e | 649 | return DETECTED_NONE; |
1da177e4 LT |
650 | } |
651 | ||
652 | static int | |
6fba180e | 653 | detect_aui(struct net_device *dev) |
1da177e4 | 654 | { |
1da177e4 | 655 | struct net_local *lp = netdev_priv(dev); |
6fba180e JP |
656 | |
657 | cs89_dbg(1, debug, "%s: Attempting AUI\n", dev->name); | |
658 | control_dc_dc(dev, 0); | |
659 | ||
660 | writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY); | |
661 | ||
662 | if (send_test_pkt(dev)) | |
663 | return DETECTED_AUI; | |
664 | else | |
665 | return DETECTED_NONE; | |
1da177e4 LT |
666 | } |
667 | ||
6fba180e | 668 | /* We have a good packet(s), get it/them out of the buffers. */ |
1da177e4 | 669 | static void |
6fba180e | 670 | net_rx(struct net_device *dev) |
1da177e4 LT |
671 | { |
672 | struct net_local *lp = netdev_priv(dev); | |
673 | struct sk_buff *skb; | |
674 | int status, length; | |
808e9a77 | 675 | |
6fba180e JP |
676 | status = ioread16(lp->virt_addr + RX_FRAME_PORT); |
677 | length = ioread16(lp->virt_addr + RX_FRAME_PORT); | |
808e9a77 | 678 | |
1da177e4 | 679 | if ((status & RX_OK) == 0) { |
661a16ce | 680 | count_rx_errors(status, dev); |
6fba180e | 681 | return; |
1da177e4 LT |
682 | } |
683 | ||
684 | /* Malloc up new buffer. */ | |
21a4e469 | 685 | skb = netdev_alloc_skb(dev, length + 2); |
1da177e4 | 686 | if (skb == NULL) { |
661a16ce | 687 | dev->stats.rx_dropped++; |
1da177e4 LT |
688 | return; |
689 | } | |
690 | skb_reserve(skb, 2); /* longword align L3 header */ | |
1da177e4 | 691 | |
6fba180e JP |
692 | readwords(lp, RX_FRAME_PORT, skb_put(skb, length), length >> 1); |
693 | if (length & 1) | |
694 | skb->data[length-1] = ioread16(lp->virt_addr + RX_FRAME_PORT); | |
1da177e4 | 695 | |
6fba180e | 696 | cs89_dbg(3, debug, "%s: received %d byte packet of type %x\n", |
808e9a77 | 697 | dev->name, length, |
6fba180e JP |
698 | (skb->data[ETH_ALEN + ETH_ALEN] << 8) | |
699 | skb->data[ETH_ALEN + ETH_ALEN + 1]); | |
808e9a77 | 700 | |
204a38ab | 701 | skb->protocol = eth_type_trans(skb, dev); |
1da177e4 | 702 | netif_rx(skb); |
661a16ce KV |
703 | dev->stats.rx_packets++; |
704 | dev->stats.rx_bytes += length; | |
1da177e4 LT |
705 | } |
706 | ||
6fba180e JP |
707 | /* The typical workload of the driver: |
708 | * Handle the network interface interrupts. | |
709 | */ | |
1da177e4 | 710 | |
6fba180e | 711 | static irqreturn_t net_interrupt(int irq, void *dev_id) |
1da177e4 | 712 | { |
6fba180e JP |
713 | struct net_device *dev = dev_id; |
714 | struct net_local *lp; | |
715 | int status; | |
716 | int handled = 0; | |
1da177e4 | 717 | |
6fba180e | 718 | lp = netdev_priv(dev); |
09dcd604 | 719 | |
6fba180e JP |
720 | /* we MUST read all the events out of the ISQ, otherwise we'll never |
721 | * get interrupted again. As a consequence, we can't have any limit | |
722 | * on the number of times we loop in the interrupt handler. The | |
723 | * hardware guarantees that eventually we'll run out of events. Of | |
724 | * course, if you're on a slow machine, and packets are arriving | |
725 | * faster than you can read them off, you're screwed. Hasta la | |
726 | * vista, baby! | |
727 | */ | |
728 | while ((status = ioread16(lp->virt_addr + ISQ_PORT))) { | |
729 | cs89_dbg(4, debug, "%s: event=%04x\n", dev->name, status); | |
730 | handled = 1; | |
731 | switch (status & ISQ_EVENT_MASK) { | |
732 | case ISQ_RECEIVER_EVENT: | |
733 | /* Got a packet(s). */ | |
734 | net_rx(dev); | |
735 | break; | |
736 | case ISQ_TRANSMITTER_EVENT: | |
737 | dev->stats.tx_packets++; | |
738 | netif_wake_queue(dev); /* Inform upper layers. */ | |
739 | if ((status & (TX_OK | | |
740 | TX_LOST_CRS | | |
741 | TX_SQE_ERROR | | |
742 | TX_LATE_COL | | |
743 | TX_16_COL)) != TX_OK) { | |
744 | if ((status & TX_OK) == 0) | |
745 | dev->stats.tx_errors++; | |
746 | if (status & TX_LOST_CRS) | |
747 | dev->stats.tx_carrier_errors++; | |
748 | if (status & TX_SQE_ERROR) | |
749 | dev->stats.tx_heartbeat_errors++; | |
750 | if (status & TX_LATE_COL) | |
751 | dev->stats.tx_window_errors++; | |
752 | if (status & TX_16_COL) | |
753 | dev->stats.tx_aborted_errors++; | |
754 | } | |
755 | break; | |
756 | case ISQ_BUFFER_EVENT: | |
757 | if (status & READY_FOR_TX) { | |
758 | /* we tried to transmit a packet earlier, | |
759 | * but inexplicably ran out of buffers. | |
760 | * That shouldn't happen since we only ever | |
761 | * load one packet. Shrug. Do the right | |
762 | * thing anyway. | |
763 | */ | |
764 | netif_wake_queue(dev); /* Inform upper layers. */ | |
765 | } | |
766 | if (status & TX_UNDERRUN) { | |
767 | cs89_dbg(0, err, "%s: transmit underrun\n", | |
768 | dev->name); | |
769 | lp->send_underrun++; | |
770 | if (lp->send_underrun == 3) | |
771 | lp->send_cmd = TX_AFTER_381; | |
772 | else if (lp->send_underrun == 6) | |
773 | lp->send_cmd = TX_AFTER_ALL; | |
774 | /* transmit cycle is done, although | |
775 | * frame wasn't transmitted - this | |
776 | * avoids having to wait for the upper | |
777 | * layers to timeout on us, in the | |
778 | * event of a tx underrun | |
779 | */ | |
780 | netif_wake_queue(dev); /* Inform upper layers. */ | |
781 | } | |
782 | #if ALLOW_DMA | |
783 | if (lp->use_dma && (status & RX_DMA)) { | |
784 | int count = readreg(dev, PP_DmaFrameCnt); | |
785 | while (count) { | |
786 | cs89_dbg(5, debug, | |
787 | "%s: receiving %d DMA frames\n", | |
788 | dev->name, count); | |
789 | if (count > 1) | |
790 | cs89_dbg(2, debug, | |
791 | "%s: receiving %d DMA frames\n", | |
792 | dev->name, count); | |
793 | dma_rx(dev); | |
794 | if (--count == 0) | |
795 | count = readreg(dev, PP_DmaFrameCnt); | |
796 | if (count > 0) | |
797 | cs89_dbg(2, debug, | |
798 | "%s: continuing with %d DMA frames\n", | |
799 | dev->name, count); | |
800 | } | |
801 | } | |
802 | #endif | |
803 | break; | |
804 | case ISQ_RX_MISS_EVENT: | |
805 | dev->stats.rx_missed_errors += (status >> 6); | |
806 | break; | |
807 | case ISQ_TX_COL_EVENT: | |
808 | dev->stats.collisions += (status >> 6); | |
809 | break; | |
810 | } | |
1da177e4 | 811 | } |
6fba180e | 812 | return IRQ_RETVAL(handled); |
1da177e4 LT |
813 | } |
814 | ||
6fba180e JP |
815 | /* Open/initialize the board. This is called (in the current kernel) |
816 | sometime after booting when the 'ifconfig' program is run. | |
6aa20a22 | 817 | |
6fba180e JP |
818 | This routine should set everything up anew at each open, even |
819 | registers that "should" only need to be set once at boot, so that | |
820 | there is non-reboot way to recover if something goes wrong. | |
821 | */ | |
1da177e4 | 822 | |
6fba180e | 823 | /* AKPM: do we need to do any locking here? */ |
1da177e4 LT |
824 | |
825 | static int | |
6fba180e | 826 | net_open(struct net_device *dev) |
1da177e4 LT |
827 | { |
828 | struct net_local *lp = netdev_priv(dev); | |
6fba180e JP |
829 | int result = 0; |
830 | int i; | |
831 | int ret; | |
1da177e4 | 832 | |
6fba180e JP |
833 | if (dev->irq < 2) { |
834 | /* Allow interrupts to be generated by the chip */ | |
835 | /* Cirrus' release had this: */ | |
1da177e4 | 836 | #if 0 |
6fba180e | 837 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ); |
1da177e4 LT |
838 | #endif |
839 | /* And 2.3.47 had this: */ | |
840 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); | |
841 | ||
842 | for (i = 2; i < CS8920_NO_INTS; i++) { | |
843 | if ((1 << i) & lp->irq_map) { | |
ca034bcd JP |
844 | if (request_irq(i, net_interrupt, 0, dev->name, |
845 | dev) == 0) { | |
1da177e4 LT |
846 | dev->irq = i; |
847 | write_irq(dev, lp->chip_type, i); | |
848 | /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */ | |
849 | break; | |
850 | } | |
851 | } | |
852 | } | |
853 | ||
854 | if (i >= CS8920_NO_INTS) { | |
855 | writereg(dev, PP_BusCTL, 0); /* disable interrupts. */ | |
dd92b9ad | 856 | pr_err("can't get an interrupt\n"); |
1da177e4 LT |
857 | ret = -EAGAIN; |
858 | goto bad_out; | |
859 | } | |
ca034bcd | 860 | } else { |
c23343cf | 861 | #if !defined(CONFIG_CS89x0_PLATFORM) |
1da177e4 | 862 | if (((1 << dev->irq) & lp->irq_map) == 0) { |
dd92b9ad | 863 | pr_err("%s: IRQ %d is not in our map of allowable IRQs, which is %x\n", |
204a38ab | 864 | dev->name, dev->irq, lp->irq_map); |
1da177e4 LT |
865 | ret = -EAGAIN; |
866 | goto bad_out; | |
867 | } | |
868 | #endif | |
869 | /* FIXME: Cirrus' release had this: */ | |
204a38ab | 870 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ); |
1da177e4 LT |
871 | /* And 2.3.47 had this: */ |
872 | #if 0 | |
873 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); | |
874 | #endif | |
875 | write_irq(dev, lp->chip_type, dev->irq); | |
a0607fd3 | 876 | ret = request_irq(dev->irq, net_interrupt, 0, dev->name, dev); |
1da177e4 | 877 | if (ret) { |
dd92b9ad | 878 | pr_err("request_irq(%d) failed\n", dev->irq); |
1da177e4 LT |
879 | goto bad_out; |
880 | } | |
881 | } | |
882 | ||
883 | #if ALLOW_DMA | |
ca034bcd JP |
884 | if (lp->use_dma && (lp->isa_config & ANY_ISA_DMA)) { |
885 | unsigned long flags; | |
886 | lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL, | |
887 | get_order(lp->dmasize * 1024)); | |
888 | if (!lp->dma_buff) { | |
889 | pr_err("%s: cannot get %dK memory for DMA\n", | |
890 | dev->name, lp->dmasize); | |
891 | goto release_irq; | |
892 | } | |
808e9a77 JP |
893 | cs89_dbg(1, debug, "%s: dma %lx %lx\n", |
894 | dev->name, | |
895 | (unsigned long)lp->dma_buff, | |
896 | (unsigned long)isa_virt_to_bus(lp->dma_buff)); | |
ca034bcd JP |
897 | if ((unsigned long)lp->dma_buff >= MAX_DMA_ADDRESS || |
898 | !dma_page_eq(lp->dma_buff, | |
899 | lp->dma_buff + lp->dmasize * 1024 - 1)) { | |
900 | pr_err("%s: not usable as DMA buffer\n", dev->name); | |
901 | goto release_irq; | |
1da177e4 | 902 | } |
ca034bcd JP |
903 | memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */ |
904 | if (request_dma(dev->dma, dev->name)) { | |
905 | pr_err("%s: cannot get dma channel %d\n", | |
906 | dev->name, dev->dma); | |
907 | goto release_irq; | |
908 | } | |
909 | write_dma(dev, lp->chip_type, dev->dma); | |
910 | lp->rx_dma_ptr = lp->dma_buff; | |
911 | lp->end_dma_buff = lp->dma_buff + lp->dmasize * 1024; | |
912 | spin_lock_irqsave(&lp->lock, flags); | |
913 | disable_dma(dev->dma); | |
914 | clear_dma_ff(dev->dma); | |
915 | set_dma_mode(dev->dma, DMA_RX_MODE); /* auto_init as well */ | |
916 | set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff)); | |
917 | set_dma_count(dev->dma, lp->dmasize * 1024); | |
918 | enable_dma(dev->dma); | |
919 | spin_unlock_irqrestore(&lp->lock, flags); | |
1da177e4 LT |
920 | } |
921 | #endif /* ALLOW_DMA */ | |
922 | ||
923 | /* set the Ethernet address */ | |
204a38ab | 924 | for (i = 0; i < ETH_ALEN / 2; i++) |
ca034bcd JP |
925 | writereg(dev, PP_IA + i * 2, |
926 | (dev->dev_addr[i * 2] | | |
927 | (dev->dev_addr[i * 2 + 1] << 8))); | |
1da177e4 LT |
928 | |
929 | /* while we're testing the interface, leave interrupts disabled */ | |
930 | writereg(dev, PP_BusCTL, MEMORY_ON); | |
931 | ||
932 | /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */ | |
ca034bcd JP |
933 | if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && |
934 | (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH)) | |
204a38ab | 935 | lp->linectl = LOW_RX_SQUELCH; |
1da177e4 | 936 | else |
204a38ab | 937 | lp->linectl = 0; |
1da177e4 | 938 | |
204a38ab JP |
939 | /* check to make sure that they have the "right" hardware available */ |
940 | switch (lp->adapter_cnf & A_CNF_MEDIA_TYPE) { | |
ca034bcd JP |
941 | case A_CNF_MEDIA_10B_T: |
942 | result = lp->adapter_cnf & A_CNF_10B_T; | |
943 | break; | |
944 | case A_CNF_MEDIA_AUI: | |
945 | result = lp->adapter_cnf & A_CNF_AUI; | |
946 | break; | |
947 | case A_CNF_MEDIA_10B_2: | |
948 | result = lp->adapter_cnf & A_CNF_10B_2; | |
949 | break; | |
950 | default: | |
951 | result = lp->adapter_cnf & (A_CNF_10B_T | | |
952 | A_CNF_AUI | | |
953 | A_CNF_10B_2); | |
204a38ab JP |
954 | } |
955 | if (!result) { | |
dd92b9ad JP |
956 | pr_err("%s: EEPROM is configured for unavailable media\n", |
957 | dev->name); | |
17a9440f WC |
958 | release_dma: |
959 | #if ALLOW_DMA | |
960 | free_dma(dev->dma); | |
17a9440f | 961 | release_irq: |
1da177e4 LT |
962 | release_dma_buff(lp); |
963 | #endif | |
ca034bcd JP |
964 | writereg(dev, PP_LineCTL, |
965 | readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON)); | |
204a38ab | 966 | free_irq(dev->irq, dev); |
1da177e4 LT |
967 | ret = -EAGAIN; |
968 | goto bad_out; | |
969 | } | |
970 | ||
204a38ab JP |
971 | /* set the hardware to the configured choice */ |
972 | switch (lp->adapter_cnf & A_CNF_MEDIA_TYPE) { | |
1da177e4 | 973 | case A_CNF_MEDIA_10B_T: |
204a38ab JP |
974 | result = detect_tp(dev); |
975 | if (result == DETECTED_NONE) { | |
dd92b9ad JP |
976 | pr_warn("%s: 10Base-T (RJ-45) has no cable\n", |
977 | dev->name); | |
204a38ab JP |
978 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ |
979 | result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */ | |
980 | } | |
1da177e4 LT |
981 | break; |
982 | case A_CNF_MEDIA_AUI: | |
204a38ab JP |
983 | result = detect_aui(dev); |
984 | if (result == DETECTED_NONE) { | |
dd92b9ad | 985 | pr_warn("%s: 10Base-5 (AUI) has no cable\n", dev->name); |
204a38ab JP |
986 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ |
987 | result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */ | |
988 | } | |
1da177e4 LT |
989 | break; |
990 | case A_CNF_MEDIA_10B_2: | |
204a38ab JP |
991 | result = detect_bnc(dev); |
992 | if (result == DETECTED_NONE) { | |
dd92b9ad | 993 | pr_warn("%s: 10Base-2 (BNC) has no cable\n", dev->name); |
204a38ab JP |
994 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ |
995 | result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */ | |
996 | } | |
1da177e4 LT |
997 | break; |
998 | case A_CNF_MEDIA_AUTO: | |
999 | writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET); | |
ca034bcd JP |
1000 | if (lp->adapter_cnf & A_CNF_10B_T) { |
1001 | result = detect_tp(dev); | |
1002 | if (result != DETECTED_NONE) | |
1da177e4 | 1003 | break; |
ca034bcd JP |
1004 | } |
1005 | if (lp->adapter_cnf & A_CNF_AUI) { | |
1006 | result = detect_aui(dev); | |
1007 | if (result != DETECTED_NONE) | |
1da177e4 | 1008 | break; |
ca034bcd JP |
1009 | } |
1010 | if (lp->adapter_cnf & A_CNF_10B_2) { | |
1011 | result = detect_bnc(dev); | |
1012 | if (result != DETECTED_NONE) | |
1da177e4 | 1013 | break; |
ca034bcd | 1014 | } |
dd92b9ad | 1015 | pr_err("%s: no media detected\n", dev->name); |
17a9440f | 1016 | goto release_dma; |
1da177e4 | 1017 | } |
204a38ab | 1018 | switch (result) { |
1da177e4 | 1019 | case DETECTED_NONE: |
dd92b9ad JP |
1020 | pr_err("%s: no network cable attached to configured media\n", |
1021 | dev->name); | |
17a9440f | 1022 | goto release_dma; |
1da177e4 | 1023 | case DETECTED_RJ45H: |
dd92b9ad | 1024 | pr_info("%s: using half-duplex 10Base-T (RJ-45)\n", dev->name); |
1da177e4 LT |
1025 | break; |
1026 | case DETECTED_RJ45F: | |
dd92b9ad | 1027 | pr_info("%s: using full-duplex 10Base-T (RJ-45)\n", dev->name); |
1da177e4 LT |
1028 | break; |
1029 | case DETECTED_AUI: | |
dd92b9ad | 1030 | pr_info("%s: using 10Base-5 (AUI)\n", dev->name); |
1da177e4 LT |
1031 | break; |
1032 | case DETECTED_BNC: | |
dd92b9ad | 1033 | pr_info("%s: using 10Base-2 (BNC)\n", dev->name); |
1da177e4 LT |
1034 | break; |
1035 | } | |
1036 | ||
1037 | /* Turn on both receive and transmit operations */ | |
ca034bcd JP |
1038 | writereg(dev, PP_LineCTL, |
1039 | readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); | |
1da177e4 LT |
1040 | |
1041 | /* Receive only error free packets addressed to this card */ | |
1042 | lp->rx_mode = 0; | |
1043 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT); | |
1044 | ||
1045 | lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL; | |
1046 | ||
1047 | if (lp->isa_config & STREAM_TRANSFER) | |
1048 | lp->curr_rx_cfg |= RX_STREAM_ENBL; | |
1049 | #if ALLOW_DMA | |
1050 | set_dma_cfg(dev); | |
1051 | #endif | |
1052 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg); | |
1053 | ||
ca034bcd JP |
1054 | writereg(dev, PP_TxCFG, (TX_LOST_CRS_ENBL | |
1055 | TX_SQE_ERROR_ENBL | | |
1056 | TX_OK_ENBL | | |
1057 | TX_LATE_COL_ENBL | | |
1058 | TX_JBR_ENBL | | |
1059 | TX_ANY_COL_ENBL | | |
1060 | TX_16_COL_ENBL)); | |
1da177e4 | 1061 | |
ca034bcd JP |
1062 | writereg(dev, PP_BufCFG, (READY_FOR_TX_ENBL | |
1063 | RX_MISS_COUNT_OVRFLOW_ENBL | | |
1da177e4 | 1064 | #if ALLOW_DMA |
ca034bcd | 1065 | dma_bufcfg(dev) | |
1da177e4 | 1066 | #endif |
ca034bcd JP |
1067 | TX_COL_COUNT_OVRFLOW_ENBL | |
1068 | TX_UNDERRUN_ENBL)); | |
1da177e4 LT |
1069 | |
1070 | /* now that we've got our act together, enable everything */ | |
ca034bcd JP |
1071 | writereg(dev, PP_BusCTL, (ENABLE_IRQ |
1072 | | (dev->mem_start ? MEMORY_ON : 0) /* turn memory on */ | |
1da177e4 | 1073 | #if ALLOW_DMA |
ca034bcd | 1074 | | dma_busctl(dev) |
1da177e4 | 1075 | #endif |
ca034bcd | 1076 | )); |
204a38ab | 1077 | netif_start_queue(dev); |
808e9a77 | 1078 | cs89_dbg(1, debug, "net_open() succeeded\n"); |
1da177e4 LT |
1079 | return 0; |
1080 | bad_out: | |
1081 | return ret; | |
1082 | } | |
1083 | ||
6fba180e JP |
1084 | /* The inverse routine to net_open(). */ |
1085 | static int | |
1086 | net_close(struct net_device *dev) | |
1087 | { | |
1088 | #if ALLOW_DMA | |
1089 | struct net_local *lp = netdev_priv(dev); | |
1090 | #endif | |
1091 | ||
1092 | netif_stop_queue(dev); | |
1093 | ||
1094 | writereg(dev, PP_RxCFG, 0); | |
1095 | writereg(dev, PP_TxCFG, 0); | |
1096 | writereg(dev, PP_BufCFG, 0); | |
1097 | writereg(dev, PP_BusCTL, 0); | |
1098 | ||
1099 | free_irq(dev->irq, dev); | |
1100 | ||
1101 | #if ALLOW_DMA | |
1102 | if (lp->use_dma && lp->dma) { | |
1103 | free_dma(dev->dma); | |
1104 | release_dma_buff(lp); | |
1105 | } | |
1106 | #endif | |
1107 | ||
1108 | /* Update the statistics here. */ | |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | /* Get the current statistics. | |
1113 | * This may be called with the card open or closed. | |
1114 | */ | |
1115 | static struct net_device_stats * | |
1116 | net_get_stats(struct net_device *dev) | |
1117 | { | |
1118 | struct net_local *lp = netdev_priv(dev); | |
1119 | unsigned long flags; | |
1120 | ||
1121 | spin_lock_irqsave(&lp->lock, flags); | |
1122 | /* Update the statistics from the device registers. */ | |
1123 | dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6); | |
1124 | dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6); | |
1125 | spin_unlock_irqrestore(&lp->lock, flags); | |
1126 | ||
1127 | return &dev->stats; | |
1128 | } | |
1129 | ||
1da177e4 LT |
1130 | static void net_timeout(struct net_device *dev) |
1131 | { | |
1132 | /* If we get here, some higher level has decided we are broken. | |
1133 | There should really be a "kick me" function call instead. */ | |
808e9a77 JP |
1134 | cs89_dbg(0, err, "%s: transmit timed out, %s?\n", |
1135 | dev->name, | |
1136 | tx_done(dev) ? "IRQ conflict" : "network cable problem"); | |
1da177e4 LT |
1137 | /* Try to restart the adaptor. */ |
1138 | netif_wake_queue(dev); | |
1139 | } | |
1140 | ||
204a38ab | 1141 | static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev) |
1da177e4 LT |
1142 | { |
1143 | struct net_local *lp = netdev_priv(dev); | |
79fbe134 | 1144 | unsigned long flags; |
1da177e4 | 1145 | |
808e9a77 JP |
1146 | cs89_dbg(3, debug, "%s: sent %d byte packet of type %x\n", |
1147 | dev->name, skb->len, | |
1148 | ((skb->data[ETH_ALEN + ETH_ALEN] << 8) | | |
1149 | skb->data[ETH_ALEN + ETH_ALEN + 1])); | |
1da177e4 LT |
1150 | |
1151 | /* keep the upload from being interrupted, since we | |
ca034bcd JP |
1152 | * ask the chip to start transmitting before the |
1153 | * whole packet has been completely uploaded. | |
1154 | */ | |
1da177e4 | 1155 | |
79fbe134 | 1156 | spin_lock_irqsave(&lp->lock, flags); |
1da177e4 LT |
1157 | netif_stop_queue(dev); |
1158 | ||
1159 | /* initiate a transmit sequence */ | |
09dcd604 JB |
1160 | iowrite16(lp->send_cmd, lp->virt_addr + TX_CMD_PORT); |
1161 | iowrite16(skb->len, lp->virt_addr + TX_LEN_PORT); | |
1da177e4 LT |
1162 | |
1163 | /* Test to see if the chip has allocated memory for the packet */ | |
1164 | if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) { | |
204a38ab | 1165 | /* Gasp! It hasn't. But that shouldn't happen since |
1da177e4 LT |
1166 | * we're waiting for TxOk, so return 1 and requeue this packet. |
1167 | */ | |
6aa20a22 | 1168 | |
79fbe134 | 1169 | spin_unlock_irqrestore(&lp->lock, flags); |
808e9a77 | 1170 | cs89_dbg(0, err, "Tx buffer not free!\n"); |
5b548140 | 1171 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1172 | } |
1173 | /* Write the contents of the packet */ | |
ca034bcd | 1174 | writewords(lp, TX_FRAME_PORT, skb->data, (skb->len + 1) >> 1); |
79fbe134 | 1175 | spin_unlock_irqrestore(&lp->lock, flags); |
661a16ce | 1176 | dev->stats.tx_bytes += skb->len; |
d6bea829 | 1177 | dev_consume_skb_any(skb); |
1da177e4 | 1178 | |
204a38ab | 1179 | /* We DO NOT call netif_wake_queue() here. |
1da177e4 LT |
1180 | * We also DO NOT call netif_start_queue(). |
1181 | * | |
1182 | * Either of these would cause another bottom half run through | |
ca034bcd JP |
1183 | * net_send_packet() before this packet has fully gone out. |
1184 | * That causes us to hit the "Gasp!" above and the send is rescheduled. | |
1185 | * it runs like a dog. We just return and wait for the Tx completion | |
1186 | * interrupt handler to restart the netdevice layer | |
1da177e4 LT |
1187 | */ |
1188 | ||
6ed10654 | 1189 | return NETDEV_TX_OK; |
1da177e4 | 1190 | } |
6aa20a22 | 1191 | |
6fba180e | 1192 | static void set_multicast_list(struct net_device *dev) |
1da177e4 | 1193 | { |
6fba180e JP |
1194 | struct net_local *lp = netdev_priv(dev); |
1195 | unsigned long flags; | |
b72c2009 | 1196 | u16 cfg; |
1da177e4 | 1197 | |
6fba180e JP |
1198 | spin_lock_irqsave(&lp->lock, flags); |
1199 | if (dev->flags & IFF_PROMISC) | |
1200 | lp->rx_mode = RX_ALL_ACCEPT; | |
1201 | else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) | |
1202 | /* The multicast-accept list is initialized to accept-all, | |
1203 | * and we rely on higher-level filtering for now. | |
1204 | */ | |
1205 | lp->rx_mode = RX_MULTCAST_ACCEPT; | |
1206 | else | |
1207 | lp->rx_mode = 0; | |
1da177e4 | 1208 | |
6fba180e JP |
1209 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode); |
1210 | ||
1211 | /* in promiscuous mode, we accept errored packets, | |
1212 | * so we have to enable interrupts on them also | |
204a38ab | 1213 | */ |
b72c2009 JB |
1214 | cfg = lp->curr_rx_cfg; |
1215 | if (lp->rx_mode == RX_ALL_ACCEPT) | |
1216 | cfg |= RX_CRC_ERROR_ENBL | RX_RUNT_ENBL | RX_EXTRA_DATA_ENBL; | |
1217 | writereg(dev, PP_RxCFG, cfg); | |
6fba180e | 1218 | spin_unlock_irqrestore(&lp->lock, flags); |
1da177e4 LT |
1219 | } |
1220 | ||
6fba180e | 1221 | static int set_mac_address(struct net_device *dev, void *p) |
1da177e4 | 1222 | { |
6fba180e JP |
1223 | int i; |
1224 | struct sockaddr *addr = p; | |
1225 | ||
1226 | if (netif_running(dev)) | |
1227 | return -EBUSY; | |
1228 | ||
1229 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1230 | ||
1231 | cs89_dbg(0, debug, "%s: Setting MAC address to %pM\n", | |
1232 | dev->name, dev->dev_addr); | |
1233 | ||
1234 | /* set the Ethernet address */ | |
1235 | for (i = 0; i < ETH_ALEN / 2; i++) | |
1236 | writereg(dev, PP_IA + i * 2, | |
1237 | (dev->dev_addr[i * 2] | | |
1238 | (dev->dev_addr[i * 2 + 1] << 8))); | |
1239 | ||
1240 | return 0; | |
1da177e4 LT |
1241 | } |
1242 | ||
6fba180e JP |
1243 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1244 | /* | |
1245 | * Polling receive - used by netconsole and other diagnostic tools | |
1246 | * to allow network i/o with interrupts disabled. | |
1247 | */ | |
1248 | static void net_poll_controller(struct net_device *dev) | |
1da177e4 | 1249 | { |
6fba180e JP |
1250 | disable_irq(dev->irq); |
1251 | net_interrupt(dev->irq, dev); | |
1252 | enable_irq(dev->irq); | |
1253 | } | |
1254 | #endif | |
1255 | ||
1256 | static const struct net_device_ops net_ops = { | |
1257 | .ndo_open = net_open, | |
1258 | .ndo_stop = net_close, | |
1259 | .ndo_tx_timeout = net_timeout, | |
1260 | .ndo_start_xmit = net_send_packet, | |
1261 | .ndo_get_stats = net_get_stats, | |
1262 | .ndo_set_rx_mode = set_multicast_list, | |
1263 | .ndo_set_mac_address = set_mac_address, | |
1264 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1265 | .ndo_poll_controller = net_poll_controller, | |
1266 | #endif | |
1267 | .ndo_change_mtu = eth_change_mtu, | |
1268 | .ndo_validate_addr = eth_validate_addr, | |
1269 | }; | |
1270 | ||
1271 | static void __init reset_chip(struct net_device *dev) | |
1272 | { | |
1273 | #if !defined(CONFIG_MACH_MX31ADS) | |
09dcd604 | 1274 | struct net_local *lp = netdev_priv(dev); |
0f9a2a9c | 1275 | unsigned long reset_start_time; |
1da177e4 | 1276 | |
6fba180e | 1277 | writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET); |
1da177e4 | 1278 | |
6fba180e JP |
1279 | /* wait 30 ms */ |
1280 | msleep(30); | |
1281 | ||
6fba180e JP |
1282 | if (lp->chip_type != CS8900) { |
1283 | /* Hardware problem requires PNP registers to be reconfigured after a reset */ | |
1284 | iowrite16(PP_CS8920_ISAINT, lp->virt_addr + ADD_PORT); | |
1285 | iowrite8(dev->irq, lp->virt_addr + DATA_PORT); | |
1286 | iowrite8(0, lp->virt_addr + DATA_PORT + 1); | |
1287 | ||
1288 | iowrite16(PP_CS8920_ISAMemB, lp->virt_addr + ADD_PORT); | |
1289 | iowrite8((dev->mem_start >> 16) & 0xff, | |
1290 | lp->virt_addr + DATA_PORT); | |
1291 | iowrite8((dev->mem_start >> 8) & 0xff, | |
1292 | lp->virt_addr + DATA_PORT + 1); | |
1da177e4 LT |
1293 | } |
1294 | ||
6fba180e JP |
1295 | /* Wait until the chip is reset */ |
1296 | reset_start_time = jiffies; | |
1297 | while ((readreg(dev, PP_SelfST) & INIT_DONE) == 0 && | |
0f9a2a9c | 1298 | time_before(jiffies, reset_start_time + 2)) |
6fba180e JP |
1299 | ; |
1300 | #endif /* !CONFIG_MACH_MX31ADS */ | |
1301 | } | |
1302 | ||
1303 | /* This is the real probe routine. | |
1304 | * Linux has a history of friendly device probes on the ISA bus. | |
1305 | * A good device probes avoids doing writes, and | |
1306 | * verifies that the correct device exists and functions. | |
1307 | * Return 0 on success. | |
1308 | */ | |
1309 | static int __init | |
1310 | cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) | |
1311 | { | |
1312 | struct net_local *lp = netdev_priv(dev); | |
1313 | int i; | |
1314 | int tmp; | |
1315 | unsigned rev_type = 0; | |
1316 | int eeprom_buff[CHKSUM_LEN]; | |
1317 | int retval; | |
1318 | ||
1319 | /* Initialize the device structure. */ | |
1320 | if (!modular) { | |
1321 | memset(lp, 0, sizeof(*lp)); | |
1322 | spin_lock_init(&lp->lock); | |
1323 | #ifndef MODULE | |
1324 | #if ALLOW_DMA | |
1325 | if (g_cs89x0_dma) { | |
1326 | lp->use_dma = 1; | |
1327 | lp->dma = g_cs89x0_dma; | |
1328 | lp->dmasize = 16; /* Could make this an option... */ | |
1329 | } | |
1da177e4 | 1330 | #endif |
6fba180e JP |
1331 | lp->force = g_cs89x0_media__force; |
1332 | #endif | |
1333 | } | |
1334 | ||
1335 | pr_debug("PP_addr at %p[%x]: 0x%x\n", | |
1336 | ioaddr, ADD_PORT, ioread16(ioaddr + ADD_PORT)); | |
1337 | iowrite16(PP_ChipID, ioaddr + ADD_PORT); | |
1338 | ||
1339 | tmp = ioread16(ioaddr + DATA_PORT); | |
1340 | if (tmp != CHIP_EISA_ID_SIG) { | |
1341 | pr_debug("%s: incorrect signature at %p[%x]: 0x%x!=" | |
1342 | CHIP_EISA_ID_SIG_STR "\n", | |
1343 | dev->name, ioaddr, DATA_PORT, tmp); | |
1344 | retval = -ENODEV; | |
1345 | goto out1; | |
1346 | } | |
1347 | ||
1348 | lp->virt_addr = ioaddr; | |
1349 | ||
1350 | /* get the chip type */ | |
1351 | rev_type = readreg(dev, PRODUCT_ID_ADD); | |
1352 | lp->chip_type = rev_type & ~REVISON_BITS; | |
1353 | lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; | |
1354 | ||
1355 | /* Check the chip type and revision in order to set the correct | |
1356 | * send command. CS8920 revision C and CS8900 revision F can use | |
1357 | * the faster send. | |
1358 | */ | |
1359 | lp->send_cmd = TX_AFTER_381; | |
1360 | if (lp->chip_type == CS8900 && lp->chip_revision >= 'F') | |
1361 | lp->send_cmd = TX_NOW; | |
1362 | if (lp->chip_type != CS8900 && lp->chip_revision >= 'C') | |
1363 | lp->send_cmd = TX_NOW; | |
1364 | ||
1365 | pr_info_once("%s\n", version); | |
1366 | ||
1367 | pr_info("%s: cs89%c0%s rev %c found at %p ", | |
1368 | dev->name, | |
1369 | lp->chip_type == CS8900 ? '0' : '2', | |
1370 | lp->chip_type == CS8920M ? "M" : "", | |
1371 | lp->chip_revision, | |
1372 | lp->virt_addr); | |
1373 | ||
1374 | reset_chip(dev); | |
1375 | ||
1376 | /* Here we read the current configuration of the chip. | |
1377 | * If there is no Extended EEPROM then the idea is to not disturb | |
1378 | * the chip configuration, it should have been correctly setup by | |
1379 | * automatic EEPROM read on reset. So, if the chip says it read | |
1380 | * the EEPROM the driver will always do *something* instead of | |
1381 | * complain that adapter_cnf is 0. | |
1382 | */ | |
1383 | ||
1384 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) == | |
1385 | (EEPROM_OK | EEPROM_PRESENT)) { | |
1386 | /* Load the MAC. */ | |
1387 | for (i = 0; i < ETH_ALEN / 2; i++) { | |
1388 | unsigned int Addr; | |
1389 | Addr = readreg(dev, PP_IA + i * 2); | |
1390 | dev->dev_addr[i * 2] = Addr & 0xFF; | |
1391 | dev->dev_addr[i * 2 + 1] = Addr >> 8; | |
1392 | } | |
1393 | ||
1394 | /* Load the Adapter Configuration. | |
1395 | * Note: Barring any more specific information from some | |
1396 | * other source (ie EEPROM+Schematics), we would not know | |
1397 | * how to operate a 10Base2 interface on the AUI port. | |
1398 | * However, since we do read the status of HCB1 and use | |
1399 | * settings that always result in calls to control_dc_dc(dev,0) | |
1400 | * a BNC interface should work if the enable pin | |
1401 | * (dc/dc converter) is on HCB1. | |
1402 | * It will be called AUI however. | |
1403 | */ | |
1404 | ||
1405 | lp->adapter_cnf = 0; | |
1406 | i = readreg(dev, PP_LineCTL); | |
1407 | /* Preserve the setting of the HCB1 pin. */ | |
1408 | if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL)) | |
1409 | lp->adapter_cnf |= A_CNF_DC_DC_POLARITY; | |
1410 | /* Save the sqelch bit */ | |
1411 | if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH) | |
1412 | lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH; | |
1413 | /* Check if the card is in 10Base-t only mode */ | |
1414 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0) | |
1415 | lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T; | |
1416 | /* Check if the card is in AUI only mode */ | |
1417 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY) | |
1418 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI; | |
1419 | /* Check if the card is in Auto mode. */ | |
1420 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET) | |
1421 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T | | |
1422 | A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO; | |
1423 | ||
1424 | cs89_dbg(1, info, "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n", | |
1425 | dev->name, i, lp->adapter_cnf); | |
1426 | ||
1427 | /* IRQ. Other chips already probe, see below. */ | |
1428 | if (lp->chip_type == CS8900) | |
1429 | lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK; | |
1430 | ||
1431 | pr_cont("[Cirrus EEPROM] "); | |
1432 | } | |
1433 | ||
1434 | pr_cont("\n"); | |
1435 | ||
1436 | /* First check to see if an EEPROM is attached. */ | |
1437 | ||
1438 | if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0) | |
1439 | pr_warn("No EEPROM, relying on command line....\n"); | |
1440 | else if (get_eeprom_data(dev, START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) { | |
1441 | pr_warn("EEPROM read failed, relying on command line\n"); | |
1442 | } else if (get_eeprom_cksum(START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) { | |
1443 | /* Check if the chip was able to read its own configuration starting | |
1444 | at 0 in the EEPROM*/ | |
1445 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) != | |
1446 | (EEPROM_OK | EEPROM_PRESENT)) | |
1447 | pr_warn("Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n"); | |
1448 | ||
1449 | } else { | |
1450 | /* This reads an extended EEPROM that is not documented | |
1451 | * in the CS8900 datasheet. | |
1452 | */ | |
1453 | ||
1454 | /* get transmission control word but keep the autonegotiation bits */ | |
1455 | if (!lp->auto_neg_cnf) | |
1456 | lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET / 2]; | |
1457 | /* Store adapter configuration */ | |
1458 | if (!lp->adapter_cnf) | |
1459 | lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET / 2]; | |
1460 | /* Store ISA configuration */ | |
1461 | lp->isa_config = eeprom_buff[ISA_CNF_OFFSET / 2]; | |
1462 | dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET / 2] << 8; | |
1463 | ||
1464 | /* eeprom_buff has 32-bit ints, so we can't just memcpy it */ | |
1465 | /* store the initial memory base address */ | |
1466 | for (i = 0; i < ETH_ALEN / 2; i++) { | |
1467 | dev->dev_addr[i * 2] = eeprom_buff[i]; | |
1468 | dev->dev_addr[i * 2 + 1] = eeprom_buff[i] >> 8; | |
1469 | } | |
1470 | cs89_dbg(1, debug, "%s: new adapter_cnf: 0x%x\n", | |
1471 | dev->name, lp->adapter_cnf); | |
1472 | } | |
1473 | ||
1474 | /* allow them to force multiple transceivers. If they force multiple, autosense */ | |
1475 | { | |
1476 | int count = 0; | |
1477 | if (lp->force & FORCE_RJ45) { | |
1478 | lp->adapter_cnf |= A_CNF_10B_T; | |
1479 | count++; | |
1480 | } | |
1481 | if (lp->force & FORCE_AUI) { | |
1482 | lp->adapter_cnf |= A_CNF_AUI; | |
1483 | count++; | |
1484 | } | |
1485 | if (lp->force & FORCE_BNC) { | |
1486 | lp->adapter_cnf |= A_CNF_10B_2; | |
1487 | count++; | |
1488 | } | |
1489 | if (count > 1) | |
1490 | lp->adapter_cnf |= A_CNF_MEDIA_AUTO; | |
1491 | else if (lp->force & FORCE_RJ45) | |
1492 | lp->adapter_cnf |= A_CNF_MEDIA_10B_T; | |
1493 | else if (lp->force & FORCE_AUI) | |
1494 | lp->adapter_cnf |= A_CNF_MEDIA_AUI; | |
1495 | else if (lp->force & FORCE_BNC) | |
1496 | lp->adapter_cnf |= A_CNF_MEDIA_10B_2; | |
1da177e4 | 1497 | } |
1da177e4 | 1498 | |
6fba180e JP |
1499 | cs89_dbg(1, debug, "%s: after force 0x%x, adapter_cnf=0x%x\n", |
1500 | dev->name, lp->force, lp->adapter_cnf); | |
1da177e4 | 1501 | |
6fba180e | 1502 | /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */ |
1da177e4 | 1503 | |
6fba180e | 1504 | /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */ |
1da177e4 | 1505 | |
6fba180e JP |
1506 | /* FIXME: we don't set the Ethernet address on the command line. Use |
1507 | * ifconfig IFACE hw ether AABBCCDDEEFF | |
1508 | */ | |
1da177e4 | 1509 | |
6fba180e JP |
1510 | pr_info("media %s%s%s", |
1511 | (lp->adapter_cnf & A_CNF_10B_T) ? "RJ-45," : "", | |
1512 | (lp->adapter_cnf & A_CNF_AUI) ? "AUI," : "", | |
1513 | (lp->adapter_cnf & A_CNF_10B_2) ? "BNC," : ""); | |
1da177e4 | 1514 | |
6fba180e | 1515 | lp->irq_map = 0xffff; |
6aa20a22 | 1516 | |
6fba180e JP |
1517 | /* If this is a CS8900 then no pnp soft */ |
1518 | if (lp->chip_type != CS8900 && | |
1519 | /* Check if the ISA IRQ has been set */ | |
1520 | (i = readreg(dev, PP_CS8920_ISAINT) & 0xff, | |
1521 | (i != 0 && i < CS8920_NO_INTS))) { | |
1522 | if (!dev->irq) | |
1523 | dev->irq = i; | |
1524 | } else { | |
1525 | i = lp->isa_config & INT_NO_MASK; | |
1526 | #ifndef CONFIG_CS89x0_PLATFORM | |
1527 | if (lp->chip_type == CS8900) { | |
6fba180e JP |
1528 | /* Translate the IRQ using the IRQ mapping table. */ |
1529 | if (i >= ARRAY_SIZE(cs8900_irq_map)) | |
1530 | pr_err("invalid ISA interrupt number %d\n", i); | |
1531 | else | |
1532 | i = cs8900_irq_map[i]; | |
1da177e4 | 1533 | |
6fba180e JP |
1534 | lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */ |
1535 | } else { | |
1536 | int irq_map_buff[IRQ_MAP_LEN/2]; | |
1da177e4 | 1537 | |
6fba180e JP |
1538 | if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA, |
1539 | IRQ_MAP_LEN / 2, | |
1540 | irq_map_buff) >= 0) { | |
1541 | if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT) | |
1542 | lp->irq_map = ((irq_map_buff[0] >> 8) | | |
1543 | (irq_map_buff[1] << 8)); | |
1544 | } | |
6fba180e JP |
1545 | } |
1546 | #endif | |
1547 | if (!dev->irq) | |
1548 | dev->irq = i; | |
1da177e4 | 1549 | } |
6fba180e JP |
1550 | |
1551 | pr_cont(" IRQ %d", dev->irq); | |
1552 | ||
1553 | #if ALLOW_DMA | |
1554 | if (lp->use_dma) { | |
1555 | get_dma_channel(dev); | |
1556 | pr_cont(", DMA %d", dev->dma); | |
1557 | } else | |
1da177e4 | 1558 | #endif |
6fba180e | 1559 | pr_cont(", programmed I/O"); |
1da177e4 | 1560 | |
6fba180e JP |
1561 | /* print the ethernet address. */ |
1562 | pr_cont(", MAC %pM\n", dev->dev_addr); | |
1563 | ||
1564 | dev->netdev_ops = &net_ops; | |
1565 | dev->watchdog_timeo = HZ; | |
1566 | ||
1567 | cs89_dbg(0, info, "cs89x0_probe1() successful\n"); | |
1568 | ||
1569 | retval = register_netdev(dev); | |
1570 | if (retval) | |
1571 | goto out2; | |
1da177e4 | 1572 | return 0; |
6fba180e JP |
1573 | out2: |
1574 | iowrite16(PP_ChipID, lp->virt_addr + ADD_PORT); | |
1575 | out1: | |
1576 | return retval; | |
1da177e4 LT |
1577 | } |
1578 | ||
6fba180e JP |
1579 | #ifndef CONFIG_CS89x0_PLATFORM |
1580 | /* | |
dbedd44e | 1581 | * This function converts the I/O port address used by the cs89x0_probe() and |
6fba180e JP |
1582 | * init_module() functions to the I/O memory address used by the |
1583 | * cs89x0_probe1() function. | |
204a38ab | 1584 | */ |
6fba180e JP |
1585 | static int __init |
1586 | cs89x0_ioport_probe(struct net_device *dev, unsigned long ioport, int modular) | |
1da177e4 LT |
1587 | { |
1588 | struct net_local *lp = netdev_priv(dev); | |
6fba180e JP |
1589 | int ret; |
1590 | void __iomem *io_mem; | |
1da177e4 | 1591 | |
6fba180e JP |
1592 | if (!lp) |
1593 | return -ENOMEM; | |
1da177e4 | 1594 | |
6fba180e | 1595 | dev->base_addr = ioport; |
1da177e4 | 1596 | |
6fba180e JP |
1597 | if (!request_region(ioport, NETCARD_IO_EXTENT, DRV_NAME)) { |
1598 | ret = -EBUSY; | |
1599 | goto out; | |
1600 | } | |
1da177e4 | 1601 | |
6fba180e JP |
1602 | io_mem = ioport_map(ioport & ~3, NETCARD_IO_EXTENT); |
1603 | if (!io_mem) { | |
1604 | ret = -ENOMEM; | |
1605 | goto release; | |
1606 | } | |
1da177e4 | 1607 | |
6fba180e JP |
1608 | /* if they give us an odd I/O address, then do ONE write to |
1609 | * the address port, to get it back to address zero, where we | |
1610 | * expect to find the EISA signature word. An IO with a base of 0x3 | |
1611 | * will skip the test for the ADD_PORT. | |
ca034bcd | 1612 | */ |
6fba180e JP |
1613 | if (ioport & 1) { |
1614 | cs89_dbg(1, info, "%s: odd ioaddr 0x%lx\n", dev->name, ioport); | |
1615 | if ((ioport & 2) != 2) { | |
1616 | if ((ioread16(io_mem + ADD_PORT) & ADD_MASK) != | |
1617 | ADD_SIG) { | |
1618 | pr_err("%s: bad signature 0x%x\n", | |
1619 | dev->name, ioread16(io_mem + ADD_PORT)); | |
1620 | ret = -ENODEV; | |
1621 | goto unmap; | |
1622 | } | |
1623 | } | |
1624 | } | |
1625 | ||
1626 | ret = cs89x0_probe1(dev, io_mem, modular); | |
1627 | if (!ret) | |
1628 | goto out; | |
1629 | unmap: | |
1630 | ioport_unmap(io_mem); | |
1631 | release: | |
1632 | release_region(ioport, NETCARD_IO_EXTENT); | |
1633 | out: | |
1634 | return ret; | |
1da177e4 LT |
1635 | } |
1636 | ||
6fba180e JP |
1637 | #ifndef MODULE |
1638 | /* Check for a network adaptor of this type, and return '0' iff one exists. | |
1639 | * If dev->base_addr == 0, probe all likely locations. | |
1640 | * If dev->base_addr == 1, always return failure. | |
1641 | * If dev->base_addr == 2, allocate space for the device and return success | |
1642 | * (detachable devices only). | |
1643 | * Return 0 on success. | |
1644 | */ | |
1da177e4 | 1645 | |
6fba180e JP |
1646 | struct net_device * __init cs89x0_probe(int unit) |
1647 | { | |
1648 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
1649 | unsigned *port; | |
1650 | int err = 0; | |
1651 | int irq; | |
1652 | int io; | |
1da177e4 | 1653 | |
6fba180e JP |
1654 | if (!dev) |
1655 | return ERR_PTR(-ENODEV); | |
1da177e4 | 1656 | |
6fba180e JP |
1657 | sprintf(dev->name, "eth%d", unit); |
1658 | netdev_boot_setup_check(dev); | |
1659 | io = dev->base_addr; | |
1660 | irq = dev->irq; | |
e174961c | 1661 | |
6fba180e | 1662 | cs89_dbg(0, info, "cs89x0_probe(0x%x)\n", io); |
1da177e4 | 1663 | |
6fba180e JP |
1664 | if (io > 0x1ff) { /* Check a single specified location. */ |
1665 | err = cs89x0_ioport_probe(dev, io, 0); | |
1666 | } else if (io != 0) { /* Don't probe at all. */ | |
1667 | err = -ENXIO; | |
1668 | } else { | |
1669 | for (port = netcard_portlist; *port; port++) { | |
1670 | if (cs89x0_ioport_probe(dev, *port, 0) == 0) | |
1671 | break; | |
1672 | dev->irq = irq; | |
1673 | } | |
1674 | if (!*port) | |
1675 | err = -ENODEV; | |
1676 | } | |
1677 | if (err) | |
1678 | goto out; | |
1679 | return dev; | |
1680 | out: | |
1681 | free_netdev(dev); | |
1682 | pr_warn("no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n"); | |
1683 | return ERR_PTR(err); | |
1da177e4 | 1684 | } |
6fba180e JP |
1685 | #endif |
1686 | #endif | |
1da177e4 | 1687 | |
e9460a9e | 1688 | #if defined(MODULE) && !defined(CONFIG_CS89x0_PLATFORM) |
1da177e4 LT |
1689 | |
1690 | static struct net_device *dev_cs89x0; | |
1691 | ||
204a38ab | 1692 | /* Support the 'debug' module parm even if we're compiled for non-debug to |
6aa20a22 | 1693 | * avoid breaking someone's startup scripts |
1da177e4 LT |
1694 | */ |
1695 | ||
1696 | static int io; | |
1697 | static int irq; | |
1698 | static int debug; | |
1699 | static char media[8]; | |
204a38ab | 1700 | static int duplex = -1; |
1da177e4 LT |
1701 | |
1702 | static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */ | |
1703 | static int dma; | |
204a38ab | 1704 | static int dmasize = 16; /* or 64 */ |
1da177e4 LT |
1705 | |
1706 | module_param(io, int, 0); | |
1707 | module_param(irq, int, 0); | |
1708 | module_param(debug, int, 0); | |
1709 | module_param_string(media, media, sizeof(media), 0); | |
1710 | module_param(duplex, int, 0); | |
1711 | module_param(dma , int, 0); | |
1712 | module_param(dmasize , int, 0); | |
1713 | module_param(use_dma , int, 0); | |
1714 | MODULE_PARM_DESC(io, "cs89x0 I/O base address"); | |
1715 | MODULE_PARM_DESC(irq, "cs89x0 IRQ number"); | |
1716 | #if DEBUGGING | |
1717 | MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)"); | |
1718 | #else | |
1719 | MODULE_PARM_DESC(debug, "(ignored)"); | |
1720 | #endif | |
1721 | MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)"); | |
1722 | /* No other value than -1 for duplex seems to be currently interpreted */ | |
1723 | MODULE_PARM_DESC(duplex, "(ignored)"); | |
1724 | #if ALLOW_DMA | |
1725 | MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0"); | |
1726 | MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0"); | |
1727 | MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)"); | |
1728 | #else | |
1729 | MODULE_PARM_DESC(dma , "(ignored)"); | |
1730 | MODULE_PARM_DESC(dmasize , "(ignored)"); | |
1731 | MODULE_PARM_DESC(use_dma , "(ignored)"); | |
1732 | #endif | |
1733 | ||
e1f8e874 | 1734 | MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton"); |
1da177e4 LT |
1735 | MODULE_LICENSE("GPL"); |
1736 | ||
1da177e4 | 1737 | /* |
204a38ab JP |
1738 | * media=t - specify media type |
1739 | * or media=2 | |
1740 | * or media=aui | |
1741 | * or medai=auto | |
1742 | * duplex=0 - specify forced half/full/autonegotiate duplex | |
1743 | * debug=# - debug level | |
1744 | * | |
1745 | * Default Chip Configuration: | |
1746 | * DMA Burst = enabled | |
1747 | * IOCHRDY Enabled = enabled | |
1748 | * UseSA = enabled | |
1749 | * CS8900 defaults to half-duplex if not specified on command-line | |
1750 | * CS8920 defaults to autoneg if not specified on command-line | |
1751 | * Use reset defaults for other config parameters | |
1752 | * | |
1753 | * Assumptions: | |
1754 | * media type specified is supported (circuitry is present) | |
1755 | * if memory address is > 1MB, then required mem decode hw is present | |
1756 | * if 10B-2, then agent other than driver will enable DC/DC converter | |
1757 | * (hw or software util) | |
1758 | */ | |
1da177e4 | 1759 | |
e26c129a | 1760 | int __init init_module(void) |
1da177e4 LT |
1761 | { |
1762 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
1763 | struct net_local *lp; | |
1764 | int ret = 0; | |
1765 | ||
1766 | #if DEBUGGING | |
1767 | net_debug = debug; | |
1768 | #else | |
1769 | debug = 0; | |
1770 | #endif | |
1771 | if (!dev) | |
1772 | return -ENOMEM; | |
1773 | ||
1774 | dev->irq = irq; | |
1775 | dev->base_addr = io; | |
1776 | lp = netdev_priv(dev); | |
1777 | ||
1778 | #if ALLOW_DMA | |
1779 | if (use_dma) { | |
1780 | lp->use_dma = use_dma; | |
1781 | lp->dma = dma; | |
1782 | lp->dmasize = dmasize; | |
1783 | } | |
1784 | #endif | |
1785 | ||
1786 | spin_lock_init(&lp->lock); | |
1787 | ||
204a38ab JP |
1788 | /* boy, they'd better get these right */ |
1789 | if (!strcmp(media, "rj45")) | |
1da177e4 LT |
1790 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; |
1791 | else if (!strcmp(media, "aui")) | |
1792 | lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI; | |
1793 | else if (!strcmp(media, "bnc")) | |
1794 | lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2; | |
1795 | else | |
1796 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; | |
1797 | ||
204a38ab | 1798 | if (duplex == -1) |
1da177e4 LT |
1799 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; |
1800 | ||
204a38ab | 1801 | if (io == 0) { |
dd92b9ad JP |
1802 | pr_err("Module autoprobing not allowed\n"); |
1803 | pr_err("Append io=0xNNN\n"); | |
204a38ab | 1804 | ret = -EPERM; |
1da177e4 | 1805 | goto out; |
204a38ab | 1806 | } else if (io <= 0x1ff) { |
1da177e4 LT |
1807 | ret = -ENXIO; |
1808 | goto out; | |
1809 | } | |
1810 | ||
1811 | #if ALLOW_DMA | |
1812 | if (use_dma && dmasize != 16 && dmasize != 64) { | |
dd92b9ad JP |
1813 | pr_err("dma size must be either 16K or 64K, not %dK\n", |
1814 | dmasize); | |
1da177e4 LT |
1815 | ret = -EPERM; |
1816 | goto out; | |
1817 | } | |
1818 | #endif | |
09dcd604 | 1819 | ret = cs89x0_ioport_probe(dev, io, 1); |
1da177e4 LT |
1820 | if (ret) |
1821 | goto out; | |
1822 | ||
1da177e4 LT |
1823 | dev_cs89x0 = dev; |
1824 | return 0; | |
1825 | out: | |
1826 | free_netdev(dev); | |
1827 | return ret; | |
1828 | } | |
1829 | ||
afc8eb46 | 1830 | void __exit |
1da177e4 LT |
1831 | cleanup_module(void) |
1832 | { | |
09dcd604 JB |
1833 | struct net_local *lp = netdev_priv(dev_cs89x0); |
1834 | ||
1da177e4 | 1835 | unregister_netdev(dev_cs89x0); |
09dcd604 JB |
1836 | iowrite16(PP_ChipID, lp->virt_addr + ADD_PORT); |
1837 | ioport_unmap(lp->virt_addr); | |
1da177e4 LT |
1838 | release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT); |
1839 | free_netdev(dev_cs89x0); | |
1840 | } | |
e9460a9e JB |
1841 | #endif /* MODULE && !CONFIG_CS89x0_PLATFORM */ |
1842 | ||
1843 | #ifdef CONFIG_CS89x0_PLATFORM | |
1844 | static int __init cs89x0_platform_probe(struct platform_device *pdev) | |
1845 | { | |
1846 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
1847 | struct net_local *lp; | |
1848 | struct resource *mem_res; | |
09dcd604 | 1849 | void __iomem *virt_addr; |
e9460a9e JB |
1850 | int err; |
1851 | ||
1852 | if (!dev) | |
1853 | return -ENOMEM; | |
1854 | ||
1855 | lp = netdev_priv(dev); | |
1856 | ||
e9460a9e | 1857 | dev->irq = platform_get_irq(pdev, 0); |
6751edeb HS |
1858 | if (dev->irq <= 0) { |
1859 | dev_warn(&dev->dev, "interrupt resource missing\n"); | |
e9460a9e JB |
1860 | err = -ENXIO; |
1861 | goto free; | |
1862 | } | |
1863 | ||
6751edeb HS |
1864 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
1865 | virt_addr = devm_ioremap_resource(&pdev->dev, mem_res); | |
1866 | if (IS_ERR(virt_addr)) { | |
1867 | err = PTR_ERR(virt_addr); | |
e9460a9e JB |
1868 | goto free; |
1869 | } | |
1870 | ||
09dcd604 | 1871 | err = cs89x0_probe1(dev, virt_addr, 0); |
e9460a9e | 1872 | if (err) { |
ca034bcd | 1873 | dev_warn(&dev->dev, "no cs8900 or cs8920 detected\n"); |
6751edeb | 1874 | goto free; |
e9460a9e JB |
1875 | } |
1876 | ||
1877 | platform_set_drvdata(pdev, dev); | |
1878 | return 0; | |
1879 | ||
e9460a9e JB |
1880 | free: |
1881 | free_netdev(dev); | |
1882 | return err; | |
1883 | } | |
1884 | ||
1885 | static int cs89x0_platform_remove(struct platform_device *pdev) | |
1886 | { | |
1887 | struct net_device *dev = platform_get_drvdata(pdev); | |
e9460a9e | 1888 | |
204a38ab | 1889 | /* This platform_get_resource() call will not return NULL, because |
09dcd604 JB |
1890 | * the same call in cs89x0_platform_probe() has returned a non NULL |
1891 | * value. | |
1892 | */ | |
e9460a9e | 1893 | unregister_netdev(dev); |
e9460a9e JB |
1894 | free_netdev(dev); |
1895 | return 0; | |
1896 | } | |
1897 | ||
1898 | static struct platform_driver cs89x0_driver = { | |
1899 | .driver = { | |
1900 | .name = DRV_NAME, | |
e9460a9e JB |
1901 | }, |
1902 | .remove = cs89x0_platform_remove, | |
1903 | }; | |
1904 | ||
fae4f3cf | 1905 | module_platform_driver_probe(cs89x0_driver, cs89x0_platform_probe); |
e9460a9e JB |
1906 | |
1907 | #endif /* CONFIG_CS89x0_PLATFORM */ |