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> | |
63 | #include <linux/skbuff.h> | |
1da177e4 LT |
64 | #include <linux/spinlock.h> |
65 | #include <linux/string.h> | |
66 | #include <linux/init.h> | |
67 | #include <linux/bitops.h> | |
68 | #include <linux/delay.h> | |
5a0e3ad6 | 69 | #include <linux/gfp.h> |
ca034bcd | 70 | #include <linux/io.h> |
1da177e4 | 71 | |
7625d483 | 72 | #include <asm/irq.h> |
e9460a9e | 73 | #include <linux/atomic.h> |
1da177e4 LT |
74 | #if ALLOW_DMA |
75 | #include <asm/dma.h> | |
76 | #endif | |
77 | ||
78 | #include "cs89x0.h" | |
79 | ||
808e9a77 JP |
80 | #define cs89_dbg(val, level, fmt, ...) \ |
81 | do { \ | |
82 | if (val <= net_debug) \ | |
83 | pr_##level(fmt, ##__VA_ARGS__); \ | |
84 | } while (0) | |
85 | ||
1da177e4 | 86 | static char version[] __initdata = |
808e9a77 | 87 | "v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton"; |
1da177e4 LT |
88 | |
89 | #define DRV_NAME "cs89x0" | |
90 | ||
91 | /* First, a few definitions that the brave might change. | |
204a38ab JP |
92 | * A zero-terminated list of I/O addresses to be probed. Some special flags.. |
93 | * Addr & 1 = Read back the address port, look for signature and reset | |
94 | * the page window before probing | |
95 | * Addr & 3 = Reset the page window and probe | |
96 | * The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space, | |
97 | * but it is possible that a Cirrus board could be plugged into the ISA | |
98 | * slots. | |
99 | */ | |
6aa20a22 | 100 | /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps |
204a38ab JP |
101 | * them to system IRQ numbers. This mapping is card specific and is set to |
102 | * the configuration of the Cirrus Eval board for this chip. | |
103 | */ | |
ef3cf9f2 | 104 | #if defined(CONFIG_MACH_IXDP2351) |
e9460a9e | 105 | #define CS89x0_NONISA_IRQ |
ca034bcd JP |
106 | static unsigned int netcard_portlist[] __used __initdata = { |
107 | IXDP2351_VIRT_CS8900_BASE, 0 | |
108 | }; | |
109 | static unsigned int cs8900_irq_map[] = { | |
110 | IRQ_IXDP2351_CS8900, 0, 0, 0 | |
111 | }; | |
1da177e4 | 112 | #elif defined(CONFIG_ARCH_IXDP2X01) |
e9460a9e | 113 | #define CS89x0_NONISA_IRQ |
ca034bcd JP |
114 | static unsigned int netcard_portlist[] __used __initdata = { |
115 | IXDP2X01_CS8900_VIRT_BASE, 0 | |
116 | }; | |
117 | static unsigned int cs8900_irq_map[] = { | |
118 | IRQ_IXDP2X01_CS8900, 0, 0, 0 | |
119 | }; | |
1da177e4 | 120 | #else |
e9460a9e | 121 | #ifndef CONFIG_CS89x0_PLATFORM |
ca034bcd JP |
122 | static unsigned int netcard_portlist[] __used __initdata = { |
123 | 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, | |
124 | 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0 | |
125 | }; | |
126 | static unsigned int cs8900_irq_map[] = { | |
127 | 10, 11, 12, 5 | |
128 | }; | |
1da177e4 | 129 | #endif |
e9460a9e | 130 | #endif |
1da177e4 LT |
131 | |
132 | #if DEBUGGING | |
133 | static unsigned int net_debug = DEBUGGING; | |
134 | #else | |
135 | #define net_debug 0 /* gcc will remove all the debug code for us */ | |
136 | #endif | |
137 | ||
138 | /* The number of low I/O ports used by the ethercard. */ | |
139 | #define NETCARD_IO_EXTENT 16 | |
140 | ||
141 | /* we allow the user to override various values normally set in the EEPROM */ | |
142 | #define FORCE_RJ45 0x0001 /* pick one of these three */ | |
143 | #define FORCE_AUI 0x0002 | |
144 | #define FORCE_BNC 0x0004 | |
145 | ||
146 | #define FORCE_AUTO 0x0010 /* pick one of these three */ | |
147 | #define FORCE_HALF 0x0020 | |
148 | #define FORCE_FULL 0x0030 | |
149 | ||
150 | /* Information that need to be kept for each board. */ | |
151 | struct net_local { | |
1da177e4 LT |
152 | int chip_type; /* one of: CS8900, CS8920, CS8920M */ |
153 | char chip_revision; /* revision letter of the chip ('A'...) */ | |
154 | int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */ | |
155 | int auto_neg_cnf; /* auto-negotiation word from EEPROM */ | |
156 | int adapter_cnf; /* adapter configuration from EEPROM */ | |
157 | int isa_config; /* ISA configuration from EEPROM */ | |
158 | int irq_map; /* IRQ map from EEPROM */ | |
159 | int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */ | |
160 | int curr_rx_cfg; /* a copy of PP_RxCFG */ | |
161 | int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */ | |
162 | int send_underrun; /* keep track of how many underruns in a row we get */ | |
163 | int force; /* force various values; see FORCE* above. */ | |
164 | spinlock_t lock; | |
09dcd604 JB |
165 | void __iomem *virt_addr;/* CS89x0 virtual address. */ |
166 | unsigned long size; /* Length of CS89x0 memory region. */ | |
1da177e4 LT |
167 | #if ALLOW_DMA |
168 | int use_dma; /* Flag: we're using dma */ | |
169 | int dma; /* DMA channel */ | |
170 | int dmasize; /* 16 or 64 */ | |
171 | unsigned char *dma_buff; /* points to the beginning of the buffer */ | |
172 | unsigned char *end_dma_buff; /* points to the end of the buffer */ | |
173 | unsigned char *rx_dma_ptr; /* points to the next packet */ | |
174 | #endif | |
175 | }; | |
176 | ||
1da177e4 LT |
177 | /* Example routines you must write ;->. */ |
178 | #define tx_done(dev) 1 | |
179 | ||
180 | /* | |
181 | * Permit 'cs89x0_dma=N' in the kernel boot environment | |
182 | */ | |
09dcd604 JB |
183 | #if !defined(MODULE) |
184 | #if ALLOW_DMA | |
1da177e4 LT |
185 | static int g_cs89x0_dma; |
186 | ||
187 | static int __init dma_fn(char *str) | |
188 | { | |
204a38ab | 189 | g_cs89x0_dma = simple_strtol(str, NULL, 0); |
1da177e4 LT |
190 | return 1; |
191 | } | |
192 | ||
193 | __setup("cs89x0_dma=", dma_fn); | |
09dcd604 | 194 | #endif /* ALLOW_DMA */ |
1da177e4 | 195 | |
1da177e4 LT |
196 | static int g_cs89x0_media__force; |
197 | ||
198 | static int __init media_fn(char *str) | |
199 | { | |
ca034bcd JP |
200 | if (!strcmp(str, "rj45")) |
201 | g_cs89x0_media__force = FORCE_RJ45; | |
202 | else if (!strcmp(str, "aui")) | |
203 | g_cs89x0_media__force = FORCE_AUI; | |
204 | else if (!strcmp(str, "bnc")) | |
205 | g_cs89x0_media__force = FORCE_BNC; | |
206 | ||
1da177e4 LT |
207 | return 1; |
208 | } | |
209 | ||
210 | __setup("cs89x0_media=", media_fn); | |
e9460a9e | 211 | #endif |
1da177e4 | 212 | |
9c878967 DS |
213 | #if defined(CONFIG_MACH_IXDP2351) |
214 | static u16 | |
215 | readword(unsigned long base_addr, int portno) | |
216 | { | |
217 | return __raw_readw(base_addr + (portno << 1)); | |
218 | } | |
219 | ||
220 | static void | |
221 | writeword(unsigned long base_addr, int portno, u16 value) | |
222 | { | |
223 | __raw_writew(value, base_addr + (portno << 1)); | |
224 | } | |
225 | #elif defined(CONFIG_ARCH_IXDP2X01) | |
a07f0dbe | 226 | static u16 |
3b68d70d LB |
227 | readword(unsigned long base_addr, int portno) |
228 | { | |
a07f0dbe | 229 | return __raw_readl(base_addr + (portno << 1)); |
3b68d70d LB |
230 | } |
231 | ||
232 | static void | |
a07f0dbe | 233 | writeword(unsigned long base_addr, int portno, u16 value) |
3b68d70d | 234 | { |
a07f0dbe | 235 | __raw_writel(value, base_addr + (portno << 1)); |
3b68d70d | 236 | } |
3b68d70d | 237 | #endif |
1da177e4 | 238 | |
09dcd604 | 239 | static void readwords(struct net_local *lp, int portno, void *buf, int length) |
084f746a LB |
240 | { |
241 | u8 *buf8 = (u8 *)buf; | |
242 | ||
243 | do { | |
a07f0dbe | 244 | u16 tmp16; |
084f746a | 245 | |
09dcd604 | 246 | tmp16 = ioread16(lp->virt_addr + portno); |
a07f0dbe LB |
247 | *buf8++ = (u8)tmp16; |
248 | *buf8++ = (u8)(tmp16 >> 8); | |
084f746a LB |
249 | } while (--length); |
250 | } | |
251 | ||
09dcd604 | 252 | static void writewords(struct net_local *lp, int portno, void *buf, int length) |
084f746a LB |
253 | { |
254 | u8 *buf8 = (u8 *)buf; | |
255 | ||
256 | do { | |
a07f0dbe | 257 | u16 tmp16; |
084f746a | 258 | |
a07f0dbe LB |
259 | tmp16 = *buf8++; |
260 | tmp16 |= (*buf8++) << 8; | |
09dcd604 | 261 | iowrite16(tmp16, lp->virt_addr + portno); |
084f746a LB |
262 | } while (--length); |
263 | } | |
264 | ||
a07f0dbe LB |
265 | static u16 |
266 | readreg(struct net_device *dev, u16 regno) | |
1da177e4 | 267 | { |
09dcd604 JB |
268 | struct net_local *lp = netdev_priv(dev); |
269 | ||
270 | iowrite16(regno, lp->virt_addr + ADD_PORT); | |
271 | return ioread16(lp->virt_addr + DATA_PORT); | |
1da177e4 LT |
272 | } |
273 | ||
274 | static void | |
a07f0dbe | 275 | writereg(struct net_device *dev, u16 regno, u16 value) |
1da177e4 | 276 | { |
09dcd604 JB |
277 | struct net_local *lp = netdev_priv(dev); |
278 | ||
279 | iowrite16(regno, lp->virt_addr + ADD_PORT); | |
280 | iowrite16(value, lp->virt_addr + DATA_PORT); | |
1da177e4 LT |
281 | } |
282 | ||
283 | static int __init | |
284 | wait_eeprom_ready(struct net_device *dev) | |
285 | { | |
286 | int timeout = jiffies; | |
204a38ab JP |
287 | /* check to see if the EEPROM is ready, |
288 | * a timeout is used just in case EEPROM is ready when | |
289 | * SI_BUSY in the PP_SelfST is clear | |
290 | */ | |
291 | while (readreg(dev, PP_SelfST) & SI_BUSY) | |
1da177e4 LT |
292 | if (jiffies - timeout >= 40) |
293 | return -1; | |
294 | return 0; | |
295 | } | |
296 | ||
297 | static int __init | |
298 | get_eeprom_data(struct net_device *dev, int off, int len, int *buffer) | |
299 | { | |
300 | int i; | |
301 | ||
6fba180e | 302 | cs89_dbg(3, info, "EEPROM data from %x for %x:", off, len); |
1da177e4 | 303 | for (i = 0; i < len; i++) { |
ca034bcd JP |
304 | if (wait_eeprom_ready(dev) < 0) |
305 | return -1; | |
1da177e4 LT |
306 | /* Now send the EEPROM read command and EEPROM location to read */ |
307 | writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD); | |
ca034bcd JP |
308 | if (wait_eeprom_ready(dev) < 0) |
309 | return -1; | |
1da177e4 | 310 | buffer[i] = readreg(dev, PP_EEData); |
6fba180e | 311 | cs89_dbg(3, cont, " %04x", buffer[i]); |
1da177e4 | 312 | } |
808e9a77 | 313 | cs89_dbg(3, cont, "\n"); |
204a38ab | 314 | return 0; |
1da177e4 LT |
315 | } |
316 | ||
317 | static int __init | |
318 | get_eeprom_cksum(int off, int len, int *buffer) | |
319 | { | |
320 | int i, cksum; | |
321 | ||
322 | cksum = 0; | |
323 | for (i = 0; i < len; i++) | |
324 | cksum += buffer[i]; | |
325 | cksum &= 0xffff; | |
326 | if (cksum == 0) | |
327 | return 0; | |
328 | return -1; | |
329 | } | |
330 | ||
6fba180e JP |
331 | static void |
332 | write_irq(struct net_device *dev, int chip_type, int irq) | |
6f519165 | 333 | { |
6fba180e | 334 | int i; |
6f519165 | 335 | |
6fba180e JP |
336 | if (chip_type == CS8900) { |
337 | #ifndef CONFIG_CS89x0_PLATFORM | |
338 | /* Search the mapping table for the corresponding IRQ pin. */ | |
339 | for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++) | |
340 | if (cs8900_irq_map[i] == irq) | |
341 | break; | |
342 | /* Not found */ | |
343 | if (i == ARRAY_SIZE(cs8900_irq_map)) | |
344 | i = 3; | |
345 | #else | |
346 | /* INTRQ0 pin is used for interrupt generation. */ | |
347 | i = 0; | |
15d23e7a | 348 | #endif |
6fba180e JP |
349 | writereg(dev, PP_CS8900_ISAINT, i); |
350 | } else { | |
351 | writereg(dev, PP_CS8920_ISAINT, irq); | |
352 | } | |
353 | } | |
15d23e7a | 354 | |
6fba180e JP |
355 | static void |
356 | count_rx_errors(int status, struct net_device *dev) | |
1da177e4 | 357 | { |
6fba180e JP |
358 | dev->stats.rx_errors++; |
359 | if (status & RX_RUNT) | |
360 | dev->stats.rx_length_errors++; | |
361 | if (status & RX_EXTRA_DATA) | |
362 | dev->stats.rx_length_errors++; | |
363 | if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA | RX_RUNT))) | |
364 | /* per str 172 */ | |
365 | dev->stats.rx_crc_errors++; | |
366 | if (status & RX_DRIBBLE) | |
367 | dev->stats.rx_frame_errors++; | |
368 | } | |
369 | ||
370 | /********************************* | |
371 | * This page contains DMA routines | |
372 | *********************************/ | |
1da177e4 | 373 | |
1da177e4 | 374 | #if ALLOW_DMA |
6fba180e JP |
375 | |
376 | #define dma_page_eq(ptr1, ptr2) ((long)(ptr1) >> 17 == (long)(ptr2) >> 17) | |
377 | ||
378 | static void | |
379 | get_dma_channel(struct net_device *dev) | |
380 | { | |
381 | struct net_local *lp = netdev_priv(dev); | |
382 | ||
383 | if (lp->dma) { | |
384 | dev->dma = lp->dma; | |
385 | lp->isa_config |= ISA_RxDMA; | |
386 | } else { | |
387 | if ((lp->isa_config & ANY_ISA_DMA) == 0) | |
388 | return; | |
389 | dev->dma = lp->isa_config & DMA_NO_MASK; | |
390 | if (lp->chip_type == CS8900) | |
391 | dev->dma += 5; | |
392 | if (dev->dma < 5 || dev->dma > 7) { | |
393 | lp->isa_config &= ~ANY_ISA_DMA; | |
394 | return; | |
1da177e4 | 395 | } |
204a38ab | 396 | } |
6fba180e | 397 | } |
1da177e4 | 398 | |
6fba180e JP |
399 | static void |
400 | write_dma(struct net_device *dev, int chip_type, int dma) | |
401 | { | |
402 | struct net_local *lp = netdev_priv(dev); | |
403 | if ((lp->isa_config & ANY_ISA_DMA) == 0) | |
404 | return; | |
405 | if (chip_type == CS8900) | |
406 | writereg(dev, PP_CS8900_ISADMA, dma - 5); | |
407 | else | |
408 | writereg(dev, PP_CS8920_ISADMA, dma); | |
409 | } | |
1da177e4 | 410 | |
6fba180e JP |
411 | static void |
412 | set_dma_cfg(struct net_device *dev) | |
413 | { | |
414 | struct net_local *lp = netdev_priv(dev); | |
1da177e4 | 415 | |
6fba180e JP |
416 | if (lp->use_dma) { |
417 | if ((lp->isa_config & ANY_ISA_DMA) == 0) { | |
418 | cs89_dbg(3, err, "set_dma_cfg(): no DMA\n"); | |
419 | return; | |
420 | } | |
421 | if (lp->isa_config & ISA_RxDMA) { | |
422 | lp->curr_rx_cfg |= RX_DMA_ONLY; | |
423 | cs89_dbg(3, info, "set_dma_cfg(): RX_DMA_ONLY\n"); | |
424 | } else { | |
425 | lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */ | |
426 | cs89_dbg(3, info, "set_dma_cfg(): AUTO_RX_DMA\n"); | |
427 | } | |
428 | } | |
429 | } | |
1da177e4 | 430 | |
6fba180e JP |
431 | static int |
432 | dma_bufcfg(struct net_device *dev) | |
433 | { | |
434 | struct net_local *lp = netdev_priv(dev); | |
435 | if (lp->use_dma) | |
436 | return (lp->isa_config & ANY_ISA_DMA) ? RX_DMA_ENBL : 0; | |
437 | else | |
438 | return 0; | |
439 | } | |
1da177e4 | 440 | |
6fba180e JP |
441 | static int |
442 | dma_busctl(struct net_device *dev) | |
443 | { | |
444 | int retval = 0; | |
445 | struct net_local *lp = netdev_priv(dev); | |
446 | if (lp->use_dma) { | |
447 | if (lp->isa_config & ANY_ISA_DMA) | |
448 | retval |= RESET_RX_DMA; /* Reset the DMA pointer */ | |
449 | if (lp->isa_config & DMA_BURST) | |
450 | retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */ | |
451 | if (lp->dmasize == 64) | |
452 | retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */ | |
453 | retval |= MEMORY_ON; /* we need memory enabled to use DMA. */ | |
454 | } | |
455 | return retval; | |
456 | } | |
1da177e4 | 457 | |
6fba180e JP |
458 | static void |
459 | dma_rx(struct net_device *dev) | |
460 | { | |
461 | struct net_local *lp = netdev_priv(dev); | |
462 | struct sk_buff *skb; | |
463 | int status, length; | |
464 | unsigned char *bp = lp->rx_dma_ptr; | |
1da177e4 | 465 | |
6fba180e JP |
466 | status = bp[0] + (bp[1] << 8); |
467 | length = bp[2] + (bp[3] << 8); | |
468 | bp += 4; | |
1da177e4 | 469 | |
6fba180e JP |
470 | cs89_dbg(5, debug, "%s: receiving DMA packet at %lx, status %x, length %x\n", |
471 | dev->name, (unsigned long)bp, status, length); | |
6aa20a22 | 472 | |
6fba180e JP |
473 | if ((status & RX_OK) == 0) { |
474 | count_rx_errors(status, dev); | |
475 | goto skip_this_frame; | |
476 | } | |
204a38ab | 477 | |
6fba180e JP |
478 | /* Malloc up new buffer. */ |
479 | skb = netdev_alloc_skb(dev, length + 2); | |
480 | if (skb == NULL) { | |
481 | /* I don't think we want to do this to a stressed system */ | |
482 | cs89_dbg(0, err, "%s: Memory squeeze, dropping packet\n", | |
483 | dev->name); | |
484 | dev->stats.rx_dropped++; | |
6aa20a22 | 485 | |
6fba180e JP |
486 | /* AKPM: advance bp to the next frame */ |
487 | skip_this_frame: | |
488 | bp += (length + 3) & ~3; | |
489 | if (bp >= lp->end_dma_buff) | |
490 | bp -= lp->dmasize * 1024; | |
491 | lp->rx_dma_ptr = bp; | |
492 | return; | |
493 | } | |
494 | skb_reserve(skb, 2); /* longword align L3 header */ | |
6aa20a22 | 495 | |
6fba180e JP |
496 | if (bp + length > lp->end_dma_buff) { |
497 | int semi_cnt = lp->end_dma_buff - bp; | |
498 | memcpy(skb_put(skb, semi_cnt), bp, semi_cnt); | |
499 | memcpy(skb_put(skb, length - semi_cnt), lp->dma_buff, | |
500 | length - semi_cnt); | |
204a38ab | 501 | } else { |
6fba180e | 502 | memcpy(skb_put(skb, length), bp, length); |
204a38ab | 503 | } |
6fba180e JP |
504 | bp += (length + 3) & ~3; |
505 | if (bp >= lp->end_dma_buff) | |
506 | bp -= lp->dmasize*1024; | |
507 | lp->rx_dma_ptr = bp; | |
1da177e4 | 508 | |
6fba180e JP |
509 | cs89_dbg(3, info, "%s: received %d byte DMA packet of type %x\n", |
510 | dev->name, length, | |
511 | ((skb->data[ETH_ALEN + ETH_ALEN] << 8) | | |
512 | skb->data[ETH_ALEN + ETH_ALEN + 1])); | |
1da177e4 | 513 | |
6fba180e JP |
514 | skb->protocol = eth_type_trans(skb, dev); |
515 | netif_rx(skb); | |
516 | dev->stats.rx_packets++; | |
517 | dev->stats.rx_bytes += length; | |
518 | } | |
1da177e4 | 519 | |
6fba180e JP |
520 | static void release_dma_buff(struct net_local *lp) |
521 | { | |
522 | if (lp->dma_buff) { | |
523 | free_pages((unsigned long)(lp->dma_buff), | |
524 | get_order(lp->dmasize * 1024)); | |
525 | lp->dma_buff = NULL; | |
526 | } | |
527 | } | |
1da177e4 | 528 | |
6fba180e | 529 | #endif /* ALLOW_DMA */ |
1da177e4 | 530 | |
6fba180e JP |
531 | static void |
532 | control_dc_dc(struct net_device *dev, int on_not_off) | |
533 | { | |
534 | struct net_local *lp = netdev_priv(dev); | |
535 | unsigned int selfcontrol; | |
536 | int timenow = jiffies; | |
537 | /* control the DC to DC convertor in the SelfControl register. | |
538 | * Note: This is hooked up to a general purpose pin, might not | |
539 | * always be a DC to DC convertor. | |
204a38ab | 540 | */ |
1da177e4 | 541 | |
6fba180e JP |
542 | selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */ |
543 | if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off) | |
544 | selfcontrol |= HCB1; | |
545 | else | |
546 | selfcontrol &= ~HCB1; | |
547 | writereg(dev, PP_SelfCTL, selfcontrol); | |
6aa20a22 | 548 | |
6fba180e JP |
549 | /* Wait for the DC/DC converter to power up - 500ms */ |
550 | while (jiffies - timenow < HZ) | |
551 | ; | |
552 | } | |
1da177e4 | 553 | |
6fba180e JP |
554 | /* send a test packet - return true if carrier bits are ok */ |
555 | static int | |
556 | send_test_pkt(struct net_device *dev) | |
557 | { | |
558 | struct net_local *lp = netdev_priv(dev); | |
559 | char test_packet[] = { | |
560 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
561 | 0, 46, /* A 46 in network order */ | |
562 | 0, 0, /* DSAP=0 & SSAP=0 fields */ | |
563 | 0xf3, 0 /* Control (Test Req + P bit set) */ | |
564 | }; | |
565 | long timenow = jiffies; | |
1da177e4 | 566 | |
6fba180e | 567 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON); |
1da177e4 | 568 | |
6fba180e JP |
569 | memcpy(test_packet, dev->dev_addr, ETH_ALEN); |
570 | memcpy(test_packet + ETH_ALEN, dev->dev_addr, ETH_ALEN); | |
1da177e4 | 571 | |
6fba180e JP |
572 | iowrite16(TX_AFTER_ALL, lp->virt_addr + TX_CMD_PORT); |
573 | iowrite16(ETH_ZLEN, lp->virt_addr + TX_LEN_PORT); | |
1da177e4 | 574 | |
6fba180e JP |
575 | /* Test to see if the chip has allocated memory for the packet */ |
576 | while (jiffies - timenow < 5) | |
577 | if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW) | |
578 | break; | |
579 | if (jiffies - timenow >= 5) | |
580 | return 0; /* this shouldn't happen */ | |
1da177e4 | 581 | |
6fba180e JP |
582 | /* Write the contents of the packet */ |
583 | writewords(lp, TX_FRAME_PORT, test_packet, (ETH_ZLEN + 1) >> 1); | |
b1fc5505 | 584 | |
6fba180e JP |
585 | cs89_dbg(1, debug, "Sending test packet "); |
586 | /* wait a couple of jiffies for packet to be received */ | |
587 | for (timenow = jiffies; jiffies - timenow < 3;) | |
588 | ; | |
589 | if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { | |
590 | cs89_dbg(1, cont, "succeeded\n"); | |
591 | return 1; | |
592 | } | |
593 | cs89_dbg(1, cont, "failed\n"); | |
1da177e4 | 594 | return 0; |
1da177e4 LT |
595 | } |
596 | ||
6fba180e JP |
597 | #define DETECTED_NONE 0 |
598 | #define DETECTED_RJ45H 1 | |
599 | #define DETECTED_RJ45F 2 | |
600 | #define DETECTED_AUI 3 | |
601 | #define DETECTED_BNC 4 | |
602 | ||
603 | static int | |
604 | detect_tp(struct net_device *dev) | |
09dcd604 JB |
605 | { |
606 | struct net_local *lp = netdev_priv(dev); | |
6fba180e JP |
607 | int timenow = jiffies; |
608 | int fdx; | |
09dcd604 | 609 | |
6fba180e | 610 | cs89_dbg(1, debug, "%s: Attempting TP\n", dev->name); |
09dcd604 | 611 | |
6fba180e JP |
612 | /* If connected to another full duplex capable 10-Base-T card |
613 | * the link pulses seem to be lost when the auto detect bit in | |
614 | * the LineCTL is set. To overcome this the auto detect bit will | |
615 | * be cleared whilst testing the 10-Base-T interface. This would | |
616 | * not be necessary for the sparrow chip but is simpler to do it | |
617 | * anyway. | |
204a38ab | 618 | */ |
6fba180e JP |
619 | writereg(dev, PP_LineCTL, lp->linectl & ~AUI_ONLY); |
620 | control_dc_dc(dev, 0); | |
09dcd604 | 621 | |
6fba180e JP |
622 | /* Delay for the hardware to work out if the TP cable is present |
623 | * - 150ms | |
624 | */ | |
625 | for (timenow = jiffies; jiffies - timenow < 15;) | |
626 | ; | |
627 | if ((readreg(dev, PP_LineST) & LINK_OK) == 0) | |
628 | return DETECTED_NONE; | |
09dcd604 | 629 | |
6fba180e JP |
630 | if (lp->chip_type == CS8900) { |
631 | switch (lp->force & 0xf0) { | |
632 | #if 0 | |
633 | case FORCE_AUTO: | |
634 | pr_info("%s: cs8900 doesn't autonegotiate\n", | |
635 | dev->name); | |
636 | return DETECTED_NONE; | |
637 | #endif | |
638 | /* CS8900 doesn't support AUTO, change to HALF*/ | |
639 | case FORCE_AUTO: | |
640 | lp->force &= ~FORCE_AUTO; | |
641 | lp->force |= FORCE_HALF; | |
642 | break; | |
643 | case FORCE_HALF: | |
644 | break; | |
645 | case FORCE_FULL: | |
646 | writereg(dev, PP_TestCTL, | |
647 | readreg(dev, PP_TestCTL) | FDX_8900); | |
648 | break; | |
649 | } | |
650 | fdx = readreg(dev, PP_TestCTL) & FDX_8900; | |
09dcd604 | 651 | } else { |
6fba180e JP |
652 | switch (lp->force & 0xf0) { |
653 | case FORCE_AUTO: | |
654 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; | |
655 | break; | |
656 | case FORCE_HALF: | |
657 | lp->auto_neg_cnf = 0; | |
658 | break; | |
659 | case FORCE_FULL: | |
660 | lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX; | |
661 | break; | |
09dcd604 | 662 | } |
1da177e4 | 663 | |
6fba180e | 664 | writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK); |
1da177e4 | 665 | |
6fba180e JP |
666 | if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) { |
667 | pr_info("%s: negotiating duplex...\n", dev->name); | |
668 | while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) { | |
669 | if (jiffies - timenow > 4000) { | |
670 | pr_err("**** Full / half duplex auto-negotiation timed out ****\n"); | |
671 | break; | |
672 | } | |
673 | } | |
1da177e4 | 674 | } |
6fba180e | 675 | fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE; |
1da177e4 | 676 | } |
6fba180e JP |
677 | if (fdx) |
678 | return DETECTED_RJ45F; | |
ca034bcd | 679 | else |
6fba180e | 680 | return DETECTED_RJ45H; |
1da177e4 LT |
681 | } |
682 | ||
6fba180e JP |
683 | static int |
684 | detect_bnc(struct net_device *dev) | |
1da177e4 LT |
685 | { |
686 | struct net_local *lp = netdev_priv(dev); | |
687 | ||
6fba180e JP |
688 | cs89_dbg(1, debug, "%s: Attempting BNC\n", dev->name); |
689 | control_dc_dc(dev, 1); | |
1da177e4 | 690 | |
6fba180e JP |
691 | writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY); |
692 | ||
693 | if (send_test_pkt(dev)) | |
694 | return DETECTED_BNC; | |
1da177e4 | 695 | else |
6fba180e | 696 | return DETECTED_NONE; |
1da177e4 LT |
697 | } |
698 | ||
699 | static int | |
6fba180e | 700 | detect_aui(struct net_device *dev) |
1da177e4 | 701 | { |
1da177e4 | 702 | struct net_local *lp = netdev_priv(dev); |
6fba180e JP |
703 | |
704 | cs89_dbg(1, debug, "%s: Attempting AUI\n", dev->name); | |
705 | control_dc_dc(dev, 0); | |
706 | ||
707 | writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY); | |
708 | ||
709 | if (send_test_pkt(dev)) | |
710 | return DETECTED_AUI; | |
711 | else | |
712 | return DETECTED_NONE; | |
1da177e4 LT |
713 | } |
714 | ||
6fba180e | 715 | /* We have a good packet(s), get it/them out of the buffers. */ |
1da177e4 | 716 | static void |
6fba180e | 717 | net_rx(struct net_device *dev) |
1da177e4 LT |
718 | { |
719 | struct net_local *lp = netdev_priv(dev); | |
720 | struct sk_buff *skb; | |
721 | int status, length; | |
808e9a77 | 722 | |
6fba180e JP |
723 | status = ioread16(lp->virt_addr + RX_FRAME_PORT); |
724 | length = ioread16(lp->virt_addr + RX_FRAME_PORT); | |
808e9a77 | 725 | |
1da177e4 | 726 | if ((status & RX_OK) == 0) { |
661a16ce | 727 | count_rx_errors(status, dev); |
6fba180e | 728 | return; |
1da177e4 LT |
729 | } |
730 | ||
731 | /* Malloc up new buffer. */ | |
21a4e469 | 732 | skb = netdev_alloc_skb(dev, length + 2); |
1da177e4 | 733 | if (skb == NULL) { |
6fba180e JP |
734 | #if 0 /* Again, this seems a cruel thing to do */ |
735 | pr_warn("%s: Memory squeeze, dropping packet\n", dev->name); | |
736 | #endif | |
661a16ce | 737 | dev->stats.rx_dropped++; |
1da177e4 LT |
738 | return; |
739 | } | |
740 | skb_reserve(skb, 2); /* longword align L3 header */ | |
1da177e4 | 741 | |
6fba180e JP |
742 | readwords(lp, RX_FRAME_PORT, skb_put(skb, length), length >> 1); |
743 | if (length & 1) | |
744 | skb->data[length-1] = ioread16(lp->virt_addr + RX_FRAME_PORT); | |
1da177e4 | 745 | |
6fba180e | 746 | cs89_dbg(3, debug, "%s: received %d byte packet of type %x\n", |
808e9a77 | 747 | dev->name, length, |
6fba180e JP |
748 | (skb->data[ETH_ALEN + ETH_ALEN] << 8) | |
749 | skb->data[ETH_ALEN + ETH_ALEN + 1]); | |
808e9a77 | 750 | |
204a38ab | 751 | skb->protocol = eth_type_trans(skb, dev); |
1da177e4 | 752 | netif_rx(skb); |
661a16ce KV |
753 | dev->stats.rx_packets++; |
754 | dev->stats.rx_bytes += length; | |
1da177e4 LT |
755 | } |
756 | ||
6fba180e JP |
757 | /* The typical workload of the driver: |
758 | * Handle the network interface interrupts. | |
759 | */ | |
1da177e4 | 760 | |
6fba180e | 761 | static irqreturn_t net_interrupt(int irq, void *dev_id) |
1da177e4 | 762 | { |
6fba180e JP |
763 | struct net_device *dev = dev_id; |
764 | struct net_local *lp; | |
765 | int status; | |
766 | int handled = 0; | |
1da177e4 | 767 | |
6fba180e | 768 | lp = netdev_priv(dev); |
09dcd604 | 769 | |
6fba180e JP |
770 | /* we MUST read all the events out of the ISQ, otherwise we'll never |
771 | * get interrupted again. As a consequence, we can't have any limit | |
772 | * on the number of times we loop in the interrupt handler. The | |
773 | * hardware guarantees that eventually we'll run out of events. Of | |
774 | * course, if you're on a slow machine, and packets are arriving | |
775 | * faster than you can read them off, you're screwed. Hasta la | |
776 | * vista, baby! | |
777 | */ | |
778 | while ((status = ioread16(lp->virt_addr + ISQ_PORT))) { | |
779 | cs89_dbg(4, debug, "%s: event=%04x\n", dev->name, status); | |
780 | handled = 1; | |
781 | switch (status & ISQ_EVENT_MASK) { | |
782 | case ISQ_RECEIVER_EVENT: | |
783 | /* Got a packet(s). */ | |
784 | net_rx(dev); | |
785 | break; | |
786 | case ISQ_TRANSMITTER_EVENT: | |
787 | dev->stats.tx_packets++; | |
788 | netif_wake_queue(dev); /* Inform upper layers. */ | |
789 | if ((status & (TX_OK | | |
790 | TX_LOST_CRS | | |
791 | TX_SQE_ERROR | | |
792 | TX_LATE_COL | | |
793 | TX_16_COL)) != TX_OK) { | |
794 | if ((status & TX_OK) == 0) | |
795 | dev->stats.tx_errors++; | |
796 | if (status & TX_LOST_CRS) | |
797 | dev->stats.tx_carrier_errors++; | |
798 | if (status & TX_SQE_ERROR) | |
799 | dev->stats.tx_heartbeat_errors++; | |
800 | if (status & TX_LATE_COL) | |
801 | dev->stats.tx_window_errors++; | |
802 | if (status & TX_16_COL) | |
803 | dev->stats.tx_aborted_errors++; | |
804 | } | |
805 | break; | |
806 | case ISQ_BUFFER_EVENT: | |
807 | if (status & READY_FOR_TX) { | |
808 | /* we tried to transmit a packet earlier, | |
809 | * but inexplicably ran out of buffers. | |
810 | * That shouldn't happen since we only ever | |
811 | * load one packet. Shrug. Do the right | |
812 | * thing anyway. | |
813 | */ | |
814 | netif_wake_queue(dev); /* Inform upper layers. */ | |
815 | } | |
816 | if (status & TX_UNDERRUN) { | |
817 | cs89_dbg(0, err, "%s: transmit underrun\n", | |
818 | dev->name); | |
819 | lp->send_underrun++; | |
820 | if (lp->send_underrun == 3) | |
821 | lp->send_cmd = TX_AFTER_381; | |
822 | else if (lp->send_underrun == 6) | |
823 | lp->send_cmd = TX_AFTER_ALL; | |
824 | /* transmit cycle is done, although | |
825 | * frame wasn't transmitted - this | |
826 | * avoids having to wait for the upper | |
827 | * layers to timeout on us, in the | |
828 | * event of a tx underrun | |
829 | */ | |
830 | netif_wake_queue(dev); /* Inform upper layers. */ | |
831 | } | |
832 | #if ALLOW_DMA | |
833 | if (lp->use_dma && (status & RX_DMA)) { | |
834 | int count = readreg(dev, PP_DmaFrameCnt); | |
835 | while (count) { | |
836 | cs89_dbg(5, debug, | |
837 | "%s: receiving %d DMA frames\n", | |
838 | dev->name, count); | |
839 | if (count > 1) | |
840 | cs89_dbg(2, debug, | |
841 | "%s: receiving %d DMA frames\n", | |
842 | dev->name, count); | |
843 | dma_rx(dev); | |
844 | if (--count == 0) | |
845 | count = readreg(dev, PP_DmaFrameCnt); | |
846 | if (count > 0) | |
847 | cs89_dbg(2, debug, | |
848 | "%s: continuing with %d DMA frames\n", | |
849 | dev->name, count); | |
850 | } | |
851 | } | |
852 | #endif | |
853 | break; | |
854 | case ISQ_RX_MISS_EVENT: | |
855 | dev->stats.rx_missed_errors += (status >> 6); | |
856 | break; | |
857 | case ISQ_TX_COL_EVENT: | |
858 | dev->stats.collisions += (status >> 6); | |
859 | break; | |
860 | } | |
1da177e4 | 861 | } |
6fba180e | 862 | return IRQ_RETVAL(handled); |
1da177e4 LT |
863 | } |
864 | ||
6fba180e JP |
865 | /* Open/initialize the board. This is called (in the current kernel) |
866 | sometime after booting when the 'ifconfig' program is run. | |
6aa20a22 | 867 | |
6fba180e JP |
868 | This routine should set everything up anew at each open, even |
869 | registers that "should" only need to be set once at boot, so that | |
870 | there is non-reboot way to recover if something goes wrong. | |
871 | */ | |
1da177e4 | 872 | |
6fba180e | 873 | /* AKPM: do we need to do any locking here? */ |
1da177e4 LT |
874 | |
875 | static int | |
6fba180e | 876 | net_open(struct net_device *dev) |
1da177e4 LT |
877 | { |
878 | struct net_local *lp = netdev_priv(dev); | |
6fba180e JP |
879 | int result = 0; |
880 | int i; | |
881 | int ret; | |
1da177e4 | 882 | |
6fba180e JP |
883 | if (dev->irq < 2) { |
884 | /* Allow interrupts to be generated by the chip */ | |
885 | /* Cirrus' release had this: */ | |
1da177e4 | 886 | #if 0 |
6fba180e | 887 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ); |
1da177e4 LT |
888 | #endif |
889 | /* And 2.3.47 had this: */ | |
890 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); | |
891 | ||
892 | for (i = 2; i < CS8920_NO_INTS; i++) { | |
893 | if ((1 << i) & lp->irq_map) { | |
ca034bcd JP |
894 | if (request_irq(i, net_interrupt, 0, dev->name, |
895 | dev) == 0) { | |
1da177e4 LT |
896 | dev->irq = i; |
897 | write_irq(dev, lp->chip_type, i); | |
898 | /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */ | |
899 | break; | |
900 | } | |
901 | } | |
902 | } | |
903 | ||
904 | if (i >= CS8920_NO_INTS) { | |
905 | writereg(dev, PP_BusCTL, 0); /* disable interrupts. */ | |
dd92b9ad | 906 | pr_err("can't get an interrupt\n"); |
1da177e4 LT |
907 | ret = -EAGAIN; |
908 | goto bad_out; | |
909 | } | |
ca034bcd | 910 | } else { |
e9460a9e | 911 | #if !defined(CS89x0_NONISA_IRQ) && !defined(CONFIG_CS89x0_PLATFORM) |
1da177e4 | 912 | if (((1 << dev->irq) & lp->irq_map) == 0) { |
dd92b9ad | 913 | pr_err("%s: IRQ %d is not in our map of allowable IRQs, which is %x\n", |
204a38ab | 914 | dev->name, dev->irq, lp->irq_map); |
1da177e4 LT |
915 | ret = -EAGAIN; |
916 | goto bad_out; | |
917 | } | |
918 | #endif | |
919 | /* FIXME: Cirrus' release had this: */ | |
204a38ab | 920 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ); |
1da177e4 LT |
921 | /* And 2.3.47 had this: */ |
922 | #if 0 | |
923 | writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); | |
924 | #endif | |
925 | write_irq(dev, lp->chip_type, dev->irq); | |
a0607fd3 | 926 | ret = request_irq(dev->irq, net_interrupt, 0, dev->name, dev); |
1da177e4 | 927 | if (ret) { |
dd92b9ad | 928 | pr_err("request_irq(%d) failed\n", dev->irq); |
1da177e4 LT |
929 | goto bad_out; |
930 | } | |
931 | } | |
932 | ||
933 | #if ALLOW_DMA | |
ca034bcd JP |
934 | if (lp->use_dma && (lp->isa_config & ANY_ISA_DMA)) { |
935 | unsigned long flags; | |
936 | lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL, | |
937 | get_order(lp->dmasize * 1024)); | |
938 | if (!lp->dma_buff) { | |
939 | pr_err("%s: cannot get %dK memory for DMA\n", | |
940 | dev->name, lp->dmasize); | |
941 | goto release_irq; | |
942 | } | |
808e9a77 JP |
943 | cs89_dbg(1, debug, "%s: dma %lx %lx\n", |
944 | dev->name, | |
945 | (unsigned long)lp->dma_buff, | |
946 | (unsigned long)isa_virt_to_bus(lp->dma_buff)); | |
ca034bcd JP |
947 | if ((unsigned long)lp->dma_buff >= MAX_DMA_ADDRESS || |
948 | !dma_page_eq(lp->dma_buff, | |
949 | lp->dma_buff + lp->dmasize * 1024 - 1)) { | |
950 | pr_err("%s: not usable as DMA buffer\n", dev->name); | |
951 | goto release_irq; | |
1da177e4 | 952 | } |
ca034bcd JP |
953 | memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */ |
954 | if (request_dma(dev->dma, dev->name)) { | |
955 | pr_err("%s: cannot get dma channel %d\n", | |
956 | dev->name, dev->dma); | |
957 | goto release_irq; | |
958 | } | |
959 | write_dma(dev, lp->chip_type, dev->dma); | |
960 | lp->rx_dma_ptr = lp->dma_buff; | |
961 | lp->end_dma_buff = lp->dma_buff + lp->dmasize * 1024; | |
962 | spin_lock_irqsave(&lp->lock, flags); | |
963 | disable_dma(dev->dma); | |
964 | clear_dma_ff(dev->dma); | |
965 | set_dma_mode(dev->dma, DMA_RX_MODE); /* auto_init as well */ | |
966 | set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff)); | |
967 | set_dma_count(dev->dma, lp->dmasize * 1024); | |
968 | enable_dma(dev->dma); | |
969 | spin_unlock_irqrestore(&lp->lock, flags); | |
1da177e4 LT |
970 | } |
971 | #endif /* ALLOW_DMA */ | |
972 | ||
973 | /* set the Ethernet address */ | |
204a38ab | 974 | for (i = 0; i < ETH_ALEN / 2; i++) |
ca034bcd JP |
975 | writereg(dev, PP_IA + i * 2, |
976 | (dev->dev_addr[i * 2] | | |
977 | (dev->dev_addr[i * 2 + 1] << 8))); | |
1da177e4 LT |
978 | |
979 | /* while we're testing the interface, leave interrupts disabled */ | |
980 | writereg(dev, PP_BusCTL, MEMORY_ON); | |
981 | ||
982 | /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */ | |
ca034bcd JP |
983 | if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && |
984 | (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH)) | |
204a38ab | 985 | lp->linectl = LOW_RX_SQUELCH; |
1da177e4 | 986 | else |
204a38ab | 987 | lp->linectl = 0; |
1da177e4 | 988 | |
204a38ab JP |
989 | /* check to make sure that they have the "right" hardware available */ |
990 | switch (lp->adapter_cnf & A_CNF_MEDIA_TYPE) { | |
ca034bcd JP |
991 | case A_CNF_MEDIA_10B_T: |
992 | result = lp->adapter_cnf & A_CNF_10B_T; | |
993 | break; | |
994 | case A_CNF_MEDIA_AUI: | |
995 | result = lp->adapter_cnf & A_CNF_AUI; | |
996 | break; | |
997 | case A_CNF_MEDIA_10B_2: | |
998 | result = lp->adapter_cnf & A_CNF_10B_2; | |
999 | break; | |
1000 | default: | |
1001 | result = lp->adapter_cnf & (A_CNF_10B_T | | |
1002 | A_CNF_AUI | | |
1003 | A_CNF_10B_2); | |
204a38ab JP |
1004 | } |
1005 | if (!result) { | |
dd92b9ad JP |
1006 | pr_err("%s: EEPROM is configured for unavailable media\n", |
1007 | dev->name); | |
17a9440f WC |
1008 | release_dma: |
1009 | #if ALLOW_DMA | |
1010 | free_dma(dev->dma); | |
17a9440f | 1011 | release_irq: |
1da177e4 LT |
1012 | release_dma_buff(lp); |
1013 | #endif | |
ca034bcd JP |
1014 | writereg(dev, PP_LineCTL, |
1015 | readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON)); | |
204a38ab | 1016 | free_irq(dev->irq, dev); |
1da177e4 LT |
1017 | ret = -EAGAIN; |
1018 | goto bad_out; | |
1019 | } | |
1020 | ||
204a38ab JP |
1021 | /* set the hardware to the configured choice */ |
1022 | switch (lp->adapter_cnf & A_CNF_MEDIA_TYPE) { | |
1da177e4 | 1023 | case A_CNF_MEDIA_10B_T: |
204a38ab JP |
1024 | result = detect_tp(dev); |
1025 | if (result == DETECTED_NONE) { | |
dd92b9ad JP |
1026 | pr_warn("%s: 10Base-T (RJ-45) has no cable\n", |
1027 | dev->name); | |
204a38ab JP |
1028 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ |
1029 | result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */ | |
1030 | } | |
1da177e4 LT |
1031 | break; |
1032 | case A_CNF_MEDIA_AUI: | |
204a38ab JP |
1033 | result = detect_aui(dev); |
1034 | if (result == DETECTED_NONE) { | |
dd92b9ad | 1035 | pr_warn("%s: 10Base-5 (AUI) has no cable\n", dev->name); |
204a38ab JP |
1036 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ |
1037 | result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */ | |
1038 | } | |
1da177e4 LT |
1039 | break; |
1040 | case A_CNF_MEDIA_10B_2: | |
204a38ab JP |
1041 | result = detect_bnc(dev); |
1042 | if (result == DETECTED_NONE) { | |
dd92b9ad | 1043 | pr_warn("%s: 10Base-2 (BNC) has no cable\n", dev->name); |
204a38ab JP |
1044 | if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ |
1045 | result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */ | |
1046 | } | |
1da177e4 LT |
1047 | break; |
1048 | case A_CNF_MEDIA_AUTO: | |
1049 | writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET); | |
ca034bcd JP |
1050 | if (lp->adapter_cnf & A_CNF_10B_T) { |
1051 | result = detect_tp(dev); | |
1052 | if (result != DETECTED_NONE) | |
1da177e4 | 1053 | break; |
ca034bcd JP |
1054 | } |
1055 | if (lp->adapter_cnf & A_CNF_AUI) { | |
1056 | result = detect_aui(dev); | |
1057 | if (result != DETECTED_NONE) | |
1da177e4 | 1058 | break; |
ca034bcd JP |
1059 | } |
1060 | if (lp->adapter_cnf & A_CNF_10B_2) { | |
1061 | result = detect_bnc(dev); | |
1062 | if (result != DETECTED_NONE) | |
1da177e4 | 1063 | break; |
ca034bcd | 1064 | } |
dd92b9ad | 1065 | pr_err("%s: no media detected\n", dev->name); |
17a9440f | 1066 | goto release_dma; |
1da177e4 | 1067 | } |
204a38ab | 1068 | switch (result) { |
1da177e4 | 1069 | case DETECTED_NONE: |
dd92b9ad JP |
1070 | pr_err("%s: no network cable attached to configured media\n", |
1071 | dev->name); | |
17a9440f | 1072 | goto release_dma; |
1da177e4 | 1073 | case DETECTED_RJ45H: |
dd92b9ad | 1074 | pr_info("%s: using half-duplex 10Base-T (RJ-45)\n", dev->name); |
1da177e4 LT |
1075 | break; |
1076 | case DETECTED_RJ45F: | |
dd92b9ad | 1077 | pr_info("%s: using full-duplex 10Base-T (RJ-45)\n", dev->name); |
1da177e4 LT |
1078 | break; |
1079 | case DETECTED_AUI: | |
dd92b9ad | 1080 | pr_info("%s: using 10Base-5 (AUI)\n", dev->name); |
1da177e4 LT |
1081 | break; |
1082 | case DETECTED_BNC: | |
dd92b9ad | 1083 | pr_info("%s: using 10Base-2 (BNC)\n", dev->name); |
1da177e4 LT |
1084 | break; |
1085 | } | |
1086 | ||
1087 | /* Turn on both receive and transmit operations */ | |
ca034bcd JP |
1088 | writereg(dev, PP_LineCTL, |
1089 | readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); | |
1da177e4 LT |
1090 | |
1091 | /* Receive only error free packets addressed to this card */ | |
1092 | lp->rx_mode = 0; | |
1093 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT); | |
1094 | ||
1095 | lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL; | |
1096 | ||
1097 | if (lp->isa_config & STREAM_TRANSFER) | |
1098 | lp->curr_rx_cfg |= RX_STREAM_ENBL; | |
1099 | #if ALLOW_DMA | |
1100 | set_dma_cfg(dev); | |
1101 | #endif | |
1102 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg); | |
1103 | ||
ca034bcd JP |
1104 | writereg(dev, PP_TxCFG, (TX_LOST_CRS_ENBL | |
1105 | TX_SQE_ERROR_ENBL | | |
1106 | TX_OK_ENBL | | |
1107 | TX_LATE_COL_ENBL | | |
1108 | TX_JBR_ENBL | | |
1109 | TX_ANY_COL_ENBL | | |
1110 | TX_16_COL_ENBL)); | |
1da177e4 | 1111 | |
ca034bcd JP |
1112 | writereg(dev, PP_BufCFG, (READY_FOR_TX_ENBL | |
1113 | RX_MISS_COUNT_OVRFLOW_ENBL | | |
1da177e4 | 1114 | #if ALLOW_DMA |
ca034bcd | 1115 | dma_bufcfg(dev) | |
1da177e4 | 1116 | #endif |
ca034bcd JP |
1117 | TX_COL_COUNT_OVRFLOW_ENBL | |
1118 | TX_UNDERRUN_ENBL)); | |
1da177e4 LT |
1119 | |
1120 | /* now that we've got our act together, enable everything */ | |
ca034bcd JP |
1121 | writereg(dev, PP_BusCTL, (ENABLE_IRQ |
1122 | | (dev->mem_start ? MEMORY_ON : 0) /* turn memory on */ | |
1da177e4 | 1123 | #if ALLOW_DMA |
ca034bcd | 1124 | | dma_busctl(dev) |
1da177e4 | 1125 | #endif |
ca034bcd | 1126 | )); |
204a38ab | 1127 | netif_start_queue(dev); |
808e9a77 | 1128 | cs89_dbg(1, debug, "net_open() succeeded\n"); |
1da177e4 LT |
1129 | return 0; |
1130 | bad_out: | |
1131 | return ret; | |
1132 | } | |
1133 | ||
6fba180e JP |
1134 | /* The inverse routine to net_open(). */ |
1135 | static int | |
1136 | net_close(struct net_device *dev) | |
1137 | { | |
1138 | #if ALLOW_DMA | |
1139 | struct net_local *lp = netdev_priv(dev); | |
1140 | #endif | |
1141 | ||
1142 | netif_stop_queue(dev); | |
1143 | ||
1144 | writereg(dev, PP_RxCFG, 0); | |
1145 | writereg(dev, PP_TxCFG, 0); | |
1146 | writereg(dev, PP_BufCFG, 0); | |
1147 | writereg(dev, PP_BusCTL, 0); | |
1148 | ||
1149 | free_irq(dev->irq, dev); | |
1150 | ||
1151 | #if ALLOW_DMA | |
1152 | if (lp->use_dma && lp->dma) { | |
1153 | free_dma(dev->dma); | |
1154 | release_dma_buff(lp); | |
1155 | } | |
1156 | #endif | |
1157 | ||
1158 | /* Update the statistics here. */ | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | /* Get the current statistics. | |
1163 | * This may be called with the card open or closed. | |
1164 | */ | |
1165 | static struct net_device_stats * | |
1166 | net_get_stats(struct net_device *dev) | |
1167 | { | |
1168 | struct net_local *lp = netdev_priv(dev); | |
1169 | unsigned long flags; | |
1170 | ||
1171 | spin_lock_irqsave(&lp->lock, flags); | |
1172 | /* Update the statistics from the device registers. */ | |
1173 | dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6); | |
1174 | dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6); | |
1175 | spin_unlock_irqrestore(&lp->lock, flags); | |
1176 | ||
1177 | return &dev->stats; | |
1178 | } | |
1179 | ||
1da177e4 LT |
1180 | static void net_timeout(struct net_device *dev) |
1181 | { | |
1182 | /* If we get here, some higher level has decided we are broken. | |
1183 | There should really be a "kick me" function call instead. */ | |
808e9a77 JP |
1184 | cs89_dbg(0, err, "%s: transmit timed out, %s?\n", |
1185 | dev->name, | |
1186 | tx_done(dev) ? "IRQ conflict" : "network cable problem"); | |
1da177e4 LT |
1187 | /* Try to restart the adaptor. */ |
1188 | netif_wake_queue(dev); | |
1189 | } | |
1190 | ||
204a38ab | 1191 | static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev) |
1da177e4 LT |
1192 | { |
1193 | struct net_local *lp = netdev_priv(dev); | |
79fbe134 | 1194 | unsigned long flags; |
1da177e4 | 1195 | |
808e9a77 JP |
1196 | cs89_dbg(3, debug, "%s: sent %d byte packet of type %x\n", |
1197 | dev->name, skb->len, | |
1198 | ((skb->data[ETH_ALEN + ETH_ALEN] << 8) | | |
1199 | skb->data[ETH_ALEN + ETH_ALEN + 1])); | |
1da177e4 LT |
1200 | |
1201 | /* keep the upload from being interrupted, since we | |
ca034bcd JP |
1202 | * ask the chip to start transmitting before the |
1203 | * whole packet has been completely uploaded. | |
1204 | */ | |
1da177e4 | 1205 | |
79fbe134 | 1206 | spin_lock_irqsave(&lp->lock, flags); |
1da177e4 LT |
1207 | netif_stop_queue(dev); |
1208 | ||
1209 | /* initiate a transmit sequence */ | |
09dcd604 JB |
1210 | iowrite16(lp->send_cmd, lp->virt_addr + TX_CMD_PORT); |
1211 | iowrite16(skb->len, lp->virt_addr + TX_LEN_PORT); | |
1da177e4 LT |
1212 | |
1213 | /* Test to see if the chip has allocated memory for the packet */ | |
1214 | if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) { | |
204a38ab | 1215 | /* Gasp! It hasn't. But that shouldn't happen since |
1da177e4 LT |
1216 | * we're waiting for TxOk, so return 1 and requeue this packet. |
1217 | */ | |
6aa20a22 | 1218 | |
79fbe134 | 1219 | spin_unlock_irqrestore(&lp->lock, flags); |
808e9a77 | 1220 | cs89_dbg(0, err, "Tx buffer not free!\n"); |
5b548140 | 1221 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1222 | } |
1223 | /* Write the contents of the packet */ | |
ca034bcd | 1224 | writewords(lp, TX_FRAME_PORT, skb->data, (skb->len + 1) >> 1); |
79fbe134 | 1225 | spin_unlock_irqrestore(&lp->lock, flags); |
661a16ce | 1226 | dev->stats.tx_bytes += skb->len; |
204a38ab | 1227 | dev_kfree_skb(skb); |
1da177e4 | 1228 | |
204a38ab | 1229 | /* We DO NOT call netif_wake_queue() here. |
1da177e4 LT |
1230 | * We also DO NOT call netif_start_queue(). |
1231 | * | |
1232 | * Either of these would cause another bottom half run through | |
ca034bcd JP |
1233 | * net_send_packet() before this packet has fully gone out. |
1234 | * That causes us to hit the "Gasp!" above and the send is rescheduled. | |
1235 | * it runs like a dog. We just return and wait for the Tx completion | |
1236 | * interrupt handler to restart the netdevice layer | |
1da177e4 LT |
1237 | */ |
1238 | ||
6ed10654 | 1239 | return NETDEV_TX_OK; |
1da177e4 | 1240 | } |
6aa20a22 | 1241 | |
6fba180e | 1242 | static void set_multicast_list(struct net_device *dev) |
1da177e4 | 1243 | { |
6fba180e JP |
1244 | struct net_local *lp = netdev_priv(dev); |
1245 | unsigned long flags; | |
b72c2009 | 1246 | u16 cfg; |
1da177e4 | 1247 | |
6fba180e JP |
1248 | spin_lock_irqsave(&lp->lock, flags); |
1249 | if (dev->flags & IFF_PROMISC) | |
1250 | lp->rx_mode = RX_ALL_ACCEPT; | |
1251 | else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) | |
1252 | /* The multicast-accept list is initialized to accept-all, | |
1253 | * and we rely on higher-level filtering for now. | |
1254 | */ | |
1255 | lp->rx_mode = RX_MULTCAST_ACCEPT; | |
1256 | else | |
1257 | lp->rx_mode = 0; | |
1da177e4 | 1258 | |
6fba180e JP |
1259 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode); |
1260 | ||
1261 | /* in promiscuous mode, we accept errored packets, | |
1262 | * so we have to enable interrupts on them also | |
204a38ab | 1263 | */ |
b72c2009 JB |
1264 | cfg = lp->curr_rx_cfg; |
1265 | if (lp->rx_mode == RX_ALL_ACCEPT) | |
1266 | cfg |= RX_CRC_ERROR_ENBL | RX_RUNT_ENBL | RX_EXTRA_DATA_ENBL; | |
1267 | writereg(dev, PP_RxCFG, cfg); | |
6fba180e | 1268 | spin_unlock_irqrestore(&lp->lock, flags); |
1da177e4 LT |
1269 | } |
1270 | ||
6fba180e | 1271 | static int set_mac_address(struct net_device *dev, void *p) |
1da177e4 | 1272 | { |
6fba180e JP |
1273 | int i; |
1274 | struct sockaddr *addr = p; | |
1275 | ||
1276 | if (netif_running(dev)) | |
1277 | return -EBUSY; | |
1278 | ||
1279 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1280 | ||
1281 | cs89_dbg(0, debug, "%s: Setting MAC address to %pM\n", | |
1282 | dev->name, dev->dev_addr); | |
1283 | ||
1284 | /* set the Ethernet address */ | |
1285 | for (i = 0; i < ETH_ALEN / 2; i++) | |
1286 | writereg(dev, PP_IA + i * 2, | |
1287 | (dev->dev_addr[i * 2] | | |
1288 | (dev->dev_addr[i * 2 + 1] << 8))); | |
1289 | ||
1290 | return 0; | |
1da177e4 LT |
1291 | } |
1292 | ||
6fba180e JP |
1293 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1294 | /* | |
1295 | * Polling receive - used by netconsole and other diagnostic tools | |
1296 | * to allow network i/o with interrupts disabled. | |
1297 | */ | |
1298 | static void net_poll_controller(struct net_device *dev) | |
1da177e4 | 1299 | { |
6fba180e JP |
1300 | disable_irq(dev->irq); |
1301 | net_interrupt(dev->irq, dev); | |
1302 | enable_irq(dev->irq); | |
1303 | } | |
1304 | #endif | |
1305 | ||
1306 | static const struct net_device_ops net_ops = { | |
1307 | .ndo_open = net_open, | |
1308 | .ndo_stop = net_close, | |
1309 | .ndo_tx_timeout = net_timeout, | |
1310 | .ndo_start_xmit = net_send_packet, | |
1311 | .ndo_get_stats = net_get_stats, | |
1312 | .ndo_set_rx_mode = set_multicast_list, | |
1313 | .ndo_set_mac_address = set_mac_address, | |
1314 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1315 | .ndo_poll_controller = net_poll_controller, | |
1316 | #endif | |
1317 | .ndo_change_mtu = eth_change_mtu, | |
1318 | .ndo_validate_addr = eth_validate_addr, | |
1319 | }; | |
1320 | ||
1321 | static void __init reset_chip(struct net_device *dev) | |
1322 | { | |
1323 | #if !defined(CONFIG_MACH_MX31ADS) | |
1324 | #if !defined(CS89x0_NONISA_IRQ) | |
09dcd604 | 1325 | struct net_local *lp = netdev_priv(dev); |
6fba180e JP |
1326 | #endif /* CS89x0_NONISA_IRQ */ |
1327 | int reset_start_time; | |
1da177e4 | 1328 | |
6fba180e | 1329 | writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET); |
1da177e4 | 1330 | |
6fba180e JP |
1331 | /* wait 30 ms */ |
1332 | msleep(30); | |
1333 | ||
1334 | #if !defined(CS89x0_NONISA_IRQ) | |
1335 | if (lp->chip_type != CS8900) { | |
1336 | /* Hardware problem requires PNP registers to be reconfigured after a reset */ | |
1337 | iowrite16(PP_CS8920_ISAINT, lp->virt_addr + ADD_PORT); | |
1338 | iowrite8(dev->irq, lp->virt_addr + DATA_PORT); | |
1339 | iowrite8(0, lp->virt_addr + DATA_PORT + 1); | |
1340 | ||
1341 | iowrite16(PP_CS8920_ISAMemB, lp->virt_addr + ADD_PORT); | |
1342 | iowrite8((dev->mem_start >> 16) & 0xff, | |
1343 | lp->virt_addr + DATA_PORT); | |
1344 | iowrite8((dev->mem_start >> 8) & 0xff, | |
1345 | lp->virt_addr + DATA_PORT + 1); | |
1da177e4 | 1346 | } |
6fba180e | 1347 | #endif /* CS89x0_NONISA_IRQ */ |
1da177e4 | 1348 | |
6fba180e JP |
1349 | /* Wait until the chip is reset */ |
1350 | reset_start_time = jiffies; | |
1351 | while ((readreg(dev, PP_SelfST) & INIT_DONE) == 0 && | |
1352 | jiffies - reset_start_time < 2) | |
1353 | ; | |
1354 | #endif /* !CONFIG_MACH_MX31ADS */ | |
1355 | } | |
1356 | ||
1357 | /* This is the real probe routine. | |
1358 | * Linux has a history of friendly device probes on the ISA bus. | |
1359 | * A good device probes avoids doing writes, and | |
1360 | * verifies that the correct device exists and functions. | |
1361 | * Return 0 on success. | |
1362 | */ | |
1363 | static int __init | |
1364 | cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) | |
1365 | { | |
1366 | struct net_local *lp = netdev_priv(dev); | |
1367 | int i; | |
1368 | int tmp; | |
1369 | unsigned rev_type = 0; | |
1370 | int eeprom_buff[CHKSUM_LEN]; | |
1371 | int retval; | |
1372 | ||
1373 | /* Initialize the device structure. */ | |
1374 | if (!modular) { | |
1375 | memset(lp, 0, sizeof(*lp)); | |
1376 | spin_lock_init(&lp->lock); | |
1377 | #ifndef MODULE | |
1378 | #if ALLOW_DMA | |
1379 | if (g_cs89x0_dma) { | |
1380 | lp->use_dma = 1; | |
1381 | lp->dma = g_cs89x0_dma; | |
1382 | lp->dmasize = 16; /* Could make this an option... */ | |
1383 | } | |
1da177e4 | 1384 | #endif |
6fba180e JP |
1385 | lp->force = g_cs89x0_media__force; |
1386 | #endif | |
1387 | } | |
1388 | ||
1389 | pr_debug("PP_addr at %p[%x]: 0x%x\n", | |
1390 | ioaddr, ADD_PORT, ioread16(ioaddr + ADD_PORT)); | |
1391 | iowrite16(PP_ChipID, ioaddr + ADD_PORT); | |
1392 | ||
1393 | tmp = ioread16(ioaddr + DATA_PORT); | |
1394 | if (tmp != CHIP_EISA_ID_SIG) { | |
1395 | pr_debug("%s: incorrect signature at %p[%x]: 0x%x!=" | |
1396 | CHIP_EISA_ID_SIG_STR "\n", | |
1397 | dev->name, ioaddr, DATA_PORT, tmp); | |
1398 | retval = -ENODEV; | |
1399 | goto out1; | |
1400 | } | |
1401 | ||
1402 | lp->virt_addr = ioaddr; | |
1403 | ||
1404 | /* get the chip type */ | |
1405 | rev_type = readreg(dev, PRODUCT_ID_ADD); | |
1406 | lp->chip_type = rev_type & ~REVISON_BITS; | |
1407 | lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; | |
1408 | ||
1409 | /* Check the chip type and revision in order to set the correct | |
1410 | * send command. CS8920 revision C and CS8900 revision F can use | |
1411 | * the faster send. | |
1412 | */ | |
1413 | lp->send_cmd = TX_AFTER_381; | |
1414 | if (lp->chip_type == CS8900 && lp->chip_revision >= 'F') | |
1415 | lp->send_cmd = TX_NOW; | |
1416 | if (lp->chip_type != CS8900 && lp->chip_revision >= 'C') | |
1417 | lp->send_cmd = TX_NOW; | |
1418 | ||
1419 | pr_info_once("%s\n", version); | |
1420 | ||
1421 | pr_info("%s: cs89%c0%s rev %c found at %p ", | |
1422 | dev->name, | |
1423 | lp->chip_type == CS8900 ? '0' : '2', | |
1424 | lp->chip_type == CS8920M ? "M" : "", | |
1425 | lp->chip_revision, | |
1426 | lp->virt_addr); | |
1427 | ||
1428 | reset_chip(dev); | |
1429 | ||
1430 | /* Here we read the current configuration of the chip. | |
1431 | * If there is no Extended EEPROM then the idea is to not disturb | |
1432 | * the chip configuration, it should have been correctly setup by | |
1433 | * automatic EEPROM read on reset. So, if the chip says it read | |
1434 | * the EEPROM the driver will always do *something* instead of | |
1435 | * complain that adapter_cnf is 0. | |
1436 | */ | |
1437 | ||
1438 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) == | |
1439 | (EEPROM_OK | EEPROM_PRESENT)) { | |
1440 | /* Load the MAC. */ | |
1441 | for (i = 0; i < ETH_ALEN / 2; i++) { | |
1442 | unsigned int Addr; | |
1443 | Addr = readreg(dev, PP_IA + i * 2); | |
1444 | dev->dev_addr[i * 2] = Addr & 0xFF; | |
1445 | dev->dev_addr[i * 2 + 1] = Addr >> 8; | |
1446 | } | |
1447 | ||
1448 | /* Load the Adapter Configuration. | |
1449 | * Note: Barring any more specific information from some | |
1450 | * other source (ie EEPROM+Schematics), we would not know | |
1451 | * how to operate a 10Base2 interface on the AUI port. | |
1452 | * However, since we do read the status of HCB1 and use | |
1453 | * settings that always result in calls to control_dc_dc(dev,0) | |
1454 | * a BNC interface should work if the enable pin | |
1455 | * (dc/dc converter) is on HCB1. | |
1456 | * It will be called AUI however. | |
1457 | */ | |
1458 | ||
1459 | lp->adapter_cnf = 0; | |
1460 | i = readreg(dev, PP_LineCTL); | |
1461 | /* Preserve the setting of the HCB1 pin. */ | |
1462 | if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL)) | |
1463 | lp->adapter_cnf |= A_CNF_DC_DC_POLARITY; | |
1464 | /* Save the sqelch bit */ | |
1465 | if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH) | |
1466 | lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH; | |
1467 | /* Check if the card is in 10Base-t only mode */ | |
1468 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0) | |
1469 | lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T; | |
1470 | /* Check if the card is in AUI only mode */ | |
1471 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY) | |
1472 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI; | |
1473 | /* Check if the card is in Auto mode. */ | |
1474 | if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET) | |
1475 | lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T | | |
1476 | A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO; | |
1477 | ||
1478 | cs89_dbg(1, info, "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n", | |
1479 | dev->name, i, lp->adapter_cnf); | |
1480 | ||
1481 | /* IRQ. Other chips already probe, see below. */ | |
1482 | if (lp->chip_type == CS8900) | |
1483 | lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK; | |
1484 | ||
1485 | pr_cont("[Cirrus EEPROM] "); | |
1486 | } | |
1487 | ||
1488 | pr_cont("\n"); | |
1489 | ||
1490 | /* First check to see if an EEPROM is attached. */ | |
1491 | ||
1492 | if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0) | |
1493 | pr_warn("No EEPROM, relying on command line....\n"); | |
1494 | else if (get_eeprom_data(dev, START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) { | |
1495 | pr_warn("EEPROM read failed, relying on command line\n"); | |
1496 | } else if (get_eeprom_cksum(START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) { | |
1497 | /* Check if the chip was able to read its own configuration starting | |
1498 | at 0 in the EEPROM*/ | |
1499 | if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) != | |
1500 | (EEPROM_OK | EEPROM_PRESENT)) | |
1501 | pr_warn("Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n"); | |
1502 | ||
1503 | } else { | |
1504 | /* This reads an extended EEPROM that is not documented | |
1505 | * in the CS8900 datasheet. | |
1506 | */ | |
1507 | ||
1508 | /* get transmission control word but keep the autonegotiation bits */ | |
1509 | if (!lp->auto_neg_cnf) | |
1510 | lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET / 2]; | |
1511 | /* Store adapter configuration */ | |
1512 | if (!lp->adapter_cnf) | |
1513 | lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET / 2]; | |
1514 | /* Store ISA configuration */ | |
1515 | lp->isa_config = eeprom_buff[ISA_CNF_OFFSET / 2]; | |
1516 | dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET / 2] << 8; | |
1517 | ||
1518 | /* eeprom_buff has 32-bit ints, so we can't just memcpy it */ | |
1519 | /* store the initial memory base address */ | |
1520 | for (i = 0; i < ETH_ALEN / 2; i++) { | |
1521 | dev->dev_addr[i * 2] = eeprom_buff[i]; | |
1522 | dev->dev_addr[i * 2 + 1] = eeprom_buff[i] >> 8; | |
1523 | } | |
1524 | cs89_dbg(1, debug, "%s: new adapter_cnf: 0x%x\n", | |
1525 | dev->name, lp->adapter_cnf); | |
1526 | } | |
1527 | ||
1528 | /* allow them to force multiple transceivers. If they force multiple, autosense */ | |
1529 | { | |
1530 | int count = 0; | |
1531 | if (lp->force & FORCE_RJ45) { | |
1532 | lp->adapter_cnf |= A_CNF_10B_T; | |
1533 | count++; | |
1534 | } | |
1535 | if (lp->force & FORCE_AUI) { | |
1536 | lp->adapter_cnf |= A_CNF_AUI; | |
1537 | count++; | |
1538 | } | |
1539 | if (lp->force & FORCE_BNC) { | |
1540 | lp->adapter_cnf |= A_CNF_10B_2; | |
1541 | count++; | |
1542 | } | |
1543 | if (count > 1) | |
1544 | lp->adapter_cnf |= A_CNF_MEDIA_AUTO; | |
1545 | else if (lp->force & FORCE_RJ45) | |
1546 | lp->adapter_cnf |= A_CNF_MEDIA_10B_T; | |
1547 | else if (lp->force & FORCE_AUI) | |
1548 | lp->adapter_cnf |= A_CNF_MEDIA_AUI; | |
1549 | else if (lp->force & FORCE_BNC) | |
1550 | lp->adapter_cnf |= A_CNF_MEDIA_10B_2; | |
1da177e4 | 1551 | } |
1da177e4 | 1552 | |
6fba180e JP |
1553 | cs89_dbg(1, debug, "%s: after force 0x%x, adapter_cnf=0x%x\n", |
1554 | dev->name, lp->force, lp->adapter_cnf); | |
1da177e4 | 1555 | |
6fba180e | 1556 | /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */ |
1da177e4 | 1557 | |
6fba180e | 1558 | /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */ |
1da177e4 | 1559 | |
6fba180e JP |
1560 | /* FIXME: we don't set the Ethernet address on the command line. Use |
1561 | * ifconfig IFACE hw ether AABBCCDDEEFF | |
1562 | */ | |
1da177e4 | 1563 | |
6fba180e JP |
1564 | pr_info("media %s%s%s", |
1565 | (lp->adapter_cnf & A_CNF_10B_T) ? "RJ-45," : "", | |
1566 | (lp->adapter_cnf & A_CNF_AUI) ? "AUI," : "", | |
1567 | (lp->adapter_cnf & A_CNF_10B_2) ? "BNC," : ""); | |
1da177e4 | 1568 | |
6fba180e | 1569 | lp->irq_map = 0xffff; |
6aa20a22 | 1570 | |
6fba180e JP |
1571 | /* If this is a CS8900 then no pnp soft */ |
1572 | if (lp->chip_type != CS8900 && | |
1573 | /* Check if the ISA IRQ has been set */ | |
1574 | (i = readreg(dev, PP_CS8920_ISAINT) & 0xff, | |
1575 | (i != 0 && i < CS8920_NO_INTS))) { | |
1576 | if (!dev->irq) | |
1577 | dev->irq = i; | |
1578 | } else { | |
1579 | i = lp->isa_config & INT_NO_MASK; | |
1580 | #ifndef CONFIG_CS89x0_PLATFORM | |
1581 | if (lp->chip_type == CS8900) { | |
1582 | #ifdef CS89x0_NONISA_IRQ | |
1583 | i = cs8900_irq_map[0]; | |
1584 | #else | |
1585 | /* Translate the IRQ using the IRQ mapping table. */ | |
1586 | if (i >= ARRAY_SIZE(cs8900_irq_map)) | |
1587 | pr_err("invalid ISA interrupt number %d\n", i); | |
1588 | else | |
1589 | i = cs8900_irq_map[i]; | |
1da177e4 | 1590 | |
6fba180e JP |
1591 | lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */ |
1592 | } else { | |
1593 | int irq_map_buff[IRQ_MAP_LEN/2]; | |
1da177e4 | 1594 | |
6fba180e JP |
1595 | if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA, |
1596 | IRQ_MAP_LEN / 2, | |
1597 | irq_map_buff) >= 0) { | |
1598 | if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT) | |
1599 | lp->irq_map = ((irq_map_buff[0] >> 8) | | |
1600 | (irq_map_buff[1] << 8)); | |
1601 | } | |
1602 | #endif | |
1603 | } | |
1604 | #endif | |
1605 | if (!dev->irq) | |
1606 | dev->irq = i; | |
1da177e4 | 1607 | } |
6fba180e JP |
1608 | |
1609 | pr_cont(" IRQ %d", dev->irq); | |
1610 | ||
1611 | #if ALLOW_DMA | |
1612 | if (lp->use_dma) { | |
1613 | get_dma_channel(dev); | |
1614 | pr_cont(", DMA %d", dev->dma); | |
1615 | } else | |
1da177e4 | 1616 | #endif |
6fba180e | 1617 | pr_cont(", programmed I/O"); |
1da177e4 | 1618 | |
6fba180e JP |
1619 | /* print the ethernet address. */ |
1620 | pr_cont(", MAC %pM\n", dev->dev_addr); | |
1621 | ||
1622 | dev->netdev_ops = &net_ops; | |
1623 | dev->watchdog_timeo = HZ; | |
1624 | ||
1625 | cs89_dbg(0, info, "cs89x0_probe1() successful\n"); | |
1626 | ||
1627 | retval = register_netdev(dev); | |
1628 | if (retval) | |
1629 | goto out2; | |
1da177e4 | 1630 | return 0; |
6fba180e JP |
1631 | out2: |
1632 | iowrite16(PP_ChipID, lp->virt_addr + ADD_PORT); | |
1633 | out1: | |
1634 | return retval; | |
1da177e4 LT |
1635 | } |
1636 | ||
6fba180e JP |
1637 | #ifndef CONFIG_CS89x0_PLATFORM |
1638 | /* | |
1639 | * This function converts the I/O port addres used by the cs89x0_probe() and | |
1640 | * init_module() functions to the I/O memory address used by the | |
1641 | * cs89x0_probe1() function. | |
204a38ab | 1642 | */ |
6fba180e JP |
1643 | static int __init |
1644 | cs89x0_ioport_probe(struct net_device *dev, unsigned long ioport, int modular) | |
1da177e4 LT |
1645 | { |
1646 | struct net_local *lp = netdev_priv(dev); | |
6fba180e JP |
1647 | int ret; |
1648 | void __iomem *io_mem; | |
1da177e4 | 1649 | |
6fba180e JP |
1650 | if (!lp) |
1651 | return -ENOMEM; | |
1da177e4 | 1652 | |
6fba180e | 1653 | dev->base_addr = ioport; |
1da177e4 | 1654 | |
6fba180e JP |
1655 | if (!request_region(ioport, NETCARD_IO_EXTENT, DRV_NAME)) { |
1656 | ret = -EBUSY; | |
1657 | goto out; | |
1658 | } | |
1da177e4 | 1659 | |
6fba180e JP |
1660 | io_mem = ioport_map(ioport & ~3, NETCARD_IO_EXTENT); |
1661 | if (!io_mem) { | |
1662 | ret = -ENOMEM; | |
1663 | goto release; | |
1664 | } | |
1da177e4 | 1665 | |
6fba180e JP |
1666 | /* if they give us an odd I/O address, then do ONE write to |
1667 | * the address port, to get it back to address zero, where we | |
1668 | * expect to find the EISA signature word. An IO with a base of 0x3 | |
1669 | * will skip the test for the ADD_PORT. | |
ca034bcd | 1670 | */ |
6fba180e JP |
1671 | if (ioport & 1) { |
1672 | cs89_dbg(1, info, "%s: odd ioaddr 0x%lx\n", dev->name, ioport); | |
1673 | if ((ioport & 2) != 2) { | |
1674 | if ((ioread16(io_mem + ADD_PORT) & ADD_MASK) != | |
1675 | ADD_SIG) { | |
1676 | pr_err("%s: bad signature 0x%x\n", | |
1677 | dev->name, ioread16(io_mem + ADD_PORT)); | |
1678 | ret = -ENODEV; | |
1679 | goto unmap; | |
1680 | } | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | ret = cs89x0_probe1(dev, io_mem, modular); | |
1685 | if (!ret) | |
1686 | goto out; | |
1687 | unmap: | |
1688 | ioport_unmap(io_mem); | |
1689 | release: | |
1690 | release_region(ioport, NETCARD_IO_EXTENT); | |
1691 | out: | |
1692 | return ret; | |
1da177e4 LT |
1693 | } |
1694 | ||
6fba180e JP |
1695 | #ifndef MODULE |
1696 | /* Check for a network adaptor of this type, and return '0' iff one exists. | |
1697 | * If dev->base_addr == 0, probe all likely locations. | |
1698 | * If dev->base_addr == 1, always return failure. | |
1699 | * If dev->base_addr == 2, allocate space for the device and return success | |
1700 | * (detachable devices only). | |
1701 | * Return 0 on success. | |
1702 | */ | |
1da177e4 | 1703 | |
6fba180e JP |
1704 | struct net_device * __init cs89x0_probe(int unit) |
1705 | { | |
1706 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
1707 | unsigned *port; | |
1708 | int err = 0; | |
1709 | int irq; | |
1710 | int io; | |
1da177e4 | 1711 | |
6fba180e JP |
1712 | if (!dev) |
1713 | return ERR_PTR(-ENODEV); | |
1da177e4 | 1714 | |
6fba180e JP |
1715 | sprintf(dev->name, "eth%d", unit); |
1716 | netdev_boot_setup_check(dev); | |
1717 | io = dev->base_addr; | |
1718 | irq = dev->irq; | |
e174961c | 1719 | |
6fba180e | 1720 | cs89_dbg(0, info, "cs89x0_probe(0x%x)\n", io); |
1da177e4 | 1721 | |
6fba180e JP |
1722 | if (io > 0x1ff) { /* Check a single specified location. */ |
1723 | err = cs89x0_ioport_probe(dev, io, 0); | |
1724 | } else if (io != 0) { /* Don't probe at all. */ | |
1725 | err = -ENXIO; | |
1726 | } else { | |
1727 | for (port = netcard_portlist; *port; port++) { | |
1728 | if (cs89x0_ioport_probe(dev, *port, 0) == 0) | |
1729 | break; | |
1730 | dev->irq = irq; | |
1731 | } | |
1732 | if (!*port) | |
1733 | err = -ENODEV; | |
1734 | } | |
1735 | if (err) | |
1736 | goto out; | |
1737 | return dev; | |
1738 | out: | |
1739 | free_netdev(dev); | |
1740 | pr_warn("no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n"); | |
1741 | return ERR_PTR(err); | |
1da177e4 | 1742 | } |
6fba180e JP |
1743 | #endif |
1744 | #endif | |
1da177e4 | 1745 | |
e9460a9e | 1746 | #if defined(MODULE) && !defined(CONFIG_CS89x0_PLATFORM) |
1da177e4 LT |
1747 | |
1748 | static struct net_device *dev_cs89x0; | |
1749 | ||
204a38ab | 1750 | /* Support the 'debug' module parm even if we're compiled for non-debug to |
6aa20a22 | 1751 | * avoid breaking someone's startup scripts |
1da177e4 LT |
1752 | */ |
1753 | ||
1754 | static int io; | |
1755 | static int irq; | |
1756 | static int debug; | |
1757 | static char media[8]; | |
204a38ab | 1758 | static int duplex = -1; |
1da177e4 LT |
1759 | |
1760 | static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */ | |
1761 | static int dma; | |
204a38ab | 1762 | static int dmasize = 16; /* or 64 */ |
1da177e4 LT |
1763 | |
1764 | module_param(io, int, 0); | |
1765 | module_param(irq, int, 0); | |
1766 | module_param(debug, int, 0); | |
1767 | module_param_string(media, media, sizeof(media), 0); | |
1768 | module_param(duplex, int, 0); | |
1769 | module_param(dma , int, 0); | |
1770 | module_param(dmasize , int, 0); | |
1771 | module_param(use_dma , int, 0); | |
1772 | MODULE_PARM_DESC(io, "cs89x0 I/O base address"); | |
1773 | MODULE_PARM_DESC(irq, "cs89x0 IRQ number"); | |
1774 | #if DEBUGGING | |
1775 | MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)"); | |
1776 | #else | |
1777 | MODULE_PARM_DESC(debug, "(ignored)"); | |
1778 | #endif | |
1779 | MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)"); | |
1780 | /* No other value than -1 for duplex seems to be currently interpreted */ | |
1781 | MODULE_PARM_DESC(duplex, "(ignored)"); | |
1782 | #if ALLOW_DMA | |
1783 | MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0"); | |
1784 | MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0"); | |
1785 | MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)"); | |
1786 | #else | |
1787 | MODULE_PARM_DESC(dma , "(ignored)"); | |
1788 | MODULE_PARM_DESC(dmasize , "(ignored)"); | |
1789 | MODULE_PARM_DESC(use_dma , "(ignored)"); | |
1790 | #endif | |
1791 | ||
e1f8e874 | 1792 | MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton"); |
1da177e4 LT |
1793 | MODULE_LICENSE("GPL"); |
1794 | ||
1da177e4 | 1795 | /* |
204a38ab JP |
1796 | * media=t - specify media type |
1797 | * or media=2 | |
1798 | * or media=aui | |
1799 | * or medai=auto | |
1800 | * duplex=0 - specify forced half/full/autonegotiate duplex | |
1801 | * debug=# - debug level | |
1802 | * | |
1803 | * Default Chip Configuration: | |
1804 | * DMA Burst = enabled | |
1805 | * IOCHRDY Enabled = enabled | |
1806 | * UseSA = enabled | |
1807 | * CS8900 defaults to half-duplex if not specified on command-line | |
1808 | * CS8920 defaults to autoneg if not specified on command-line | |
1809 | * Use reset defaults for other config parameters | |
1810 | * | |
1811 | * Assumptions: | |
1812 | * media type specified is supported (circuitry is present) | |
1813 | * if memory address is > 1MB, then required mem decode hw is present | |
1814 | * if 10B-2, then agent other than driver will enable DC/DC converter | |
1815 | * (hw or software util) | |
1816 | */ | |
1da177e4 | 1817 | |
e26c129a | 1818 | int __init init_module(void) |
1da177e4 LT |
1819 | { |
1820 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
1821 | struct net_local *lp; | |
1822 | int ret = 0; | |
1823 | ||
1824 | #if DEBUGGING | |
1825 | net_debug = debug; | |
1826 | #else | |
1827 | debug = 0; | |
1828 | #endif | |
1829 | if (!dev) | |
1830 | return -ENOMEM; | |
1831 | ||
1832 | dev->irq = irq; | |
1833 | dev->base_addr = io; | |
1834 | lp = netdev_priv(dev); | |
1835 | ||
1836 | #if ALLOW_DMA | |
1837 | if (use_dma) { | |
1838 | lp->use_dma = use_dma; | |
1839 | lp->dma = dma; | |
1840 | lp->dmasize = dmasize; | |
1841 | } | |
1842 | #endif | |
1843 | ||
1844 | spin_lock_init(&lp->lock); | |
1845 | ||
204a38ab JP |
1846 | /* boy, they'd better get these right */ |
1847 | if (!strcmp(media, "rj45")) | |
1da177e4 LT |
1848 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; |
1849 | else if (!strcmp(media, "aui")) | |
1850 | lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI; | |
1851 | else if (!strcmp(media, "bnc")) | |
1852 | lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2; | |
1853 | else | |
1854 | lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; | |
1855 | ||
204a38ab | 1856 | if (duplex == -1) |
1da177e4 LT |
1857 | lp->auto_neg_cnf = AUTO_NEG_ENABLE; |
1858 | ||
204a38ab | 1859 | if (io == 0) { |
dd92b9ad JP |
1860 | pr_err("Module autoprobing not allowed\n"); |
1861 | pr_err("Append io=0xNNN\n"); | |
204a38ab | 1862 | ret = -EPERM; |
1da177e4 | 1863 | goto out; |
204a38ab | 1864 | } else if (io <= 0x1ff) { |
1da177e4 LT |
1865 | ret = -ENXIO; |
1866 | goto out; | |
1867 | } | |
1868 | ||
1869 | #if ALLOW_DMA | |
1870 | if (use_dma && dmasize != 16 && dmasize != 64) { | |
dd92b9ad JP |
1871 | pr_err("dma size must be either 16K or 64K, not %dK\n", |
1872 | dmasize); | |
1da177e4 LT |
1873 | ret = -EPERM; |
1874 | goto out; | |
1875 | } | |
1876 | #endif | |
09dcd604 | 1877 | ret = cs89x0_ioport_probe(dev, io, 1); |
1da177e4 LT |
1878 | if (ret) |
1879 | goto out; | |
1880 | ||
1da177e4 LT |
1881 | dev_cs89x0 = dev; |
1882 | return 0; | |
1883 | out: | |
1884 | free_netdev(dev); | |
1885 | return ret; | |
1886 | } | |
1887 | ||
afc8eb46 | 1888 | void __exit |
1da177e4 LT |
1889 | cleanup_module(void) |
1890 | { | |
09dcd604 JB |
1891 | struct net_local *lp = netdev_priv(dev_cs89x0); |
1892 | ||
1da177e4 | 1893 | unregister_netdev(dev_cs89x0); |
09dcd604 JB |
1894 | iowrite16(PP_ChipID, lp->virt_addr + ADD_PORT); |
1895 | ioport_unmap(lp->virt_addr); | |
1da177e4 LT |
1896 | release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT); |
1897 | free_netdev(dev_cs89x0); | |
1898 | } | |
e9460a9e JB |
1899 | #endif /* MODULE && !CONFIG_CS89x0_PLATFORM */ |
1900 | ||
1901 | #ifdef CONFIG_CS89x0_PLATFORM | |
1902 | static int __init cs89x0_platform_probe(struct platform_device *pdev) | |
1903 | { | |
1904 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
1905 | struct net_local *lp; | |
1906 | struct resource *mem_res; | |
09dcd604 | 1907 | void __iomem *virt_addr; |
e9460a9e JB |
1908 | int err; |
1909 | ||
1910 | if (!dev) | |
1911 | return -ENOMEM; | |
1912 | ||
1913 | lp = netdev_priv(dev); | |
1914 | ||
1915 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1916 | dev->irq = platform_get_irq(pdev, 0); | |
1917 | if (mem_res == NULL || dev->irq <= 0) { | |
ca034bcd | 1918 | dev_warn(&dev->dev, "memory/interrupt resource missing\n"); |
e9460a9e JB |
1919 | err = -ENXIO; |
1920 | goto free; | |
1921 | } | |
1922 | ||
e9460a9e | 1923 | lp->size = resource_size(mem_res); |
09dcd604 | 1924 | if (!request_mem_region(mem_res->start, lp->size, DRV_NAME)) { |
ca034bcd | 1925 | dev_warn(&dev->dev, "request_mem_region() failed\n"); |
e9460a9e JB |
1926 | err = -EBUSY; |
1927 | goto free; | |
1928 | } | |
1929 | ||
09dcd604 JB |
1930 | virt_addr = ioremap(mem_res->start, lp->size); |
1931 | if (!virt_addr) { | |
ca034bcd | 1932 | dev_warn(&dev->dev, "ioremap() failed\n"); |
e9460a9e JB |
1933 | err = -ENOMEM; |
1934 | goto release; | |
1935 | } | |
1936 | ||
09dcd604 | 1937 | err = cs89x0_probe1(dev, virt_addr, 0); |
e9460a9e | 1938 | if (err) { |
ca034bcd | 1939 | dev_warn(&dev->dev, "no cs8900 or cs8920 detected\n"); |
e9460a9e JB |
1940 | goto unmap; |
1941 | } | |
1942 | ||
1943 | platform_set_drvdata(pdev, dev); | |
1944 | return 0; | |
1945 | ||
1946 | unmap: | |
09dcd604 | 1947 | iounmap(virt_addr); |
e9460a9e | 1948 | release: |
09dcd604 | 1949 | release_mem_region(mem_res->start, lp->size); |
e9460a9e JB |
1950 | free: |
1951 | free_netdev(dev); | |
1952 | return err; | |
1953 | } | |
1954 | ||
1955 | static int cs89x0_platform_remove(struct platform_device *pdev) | |
1956 | { | |
1957 | struct net_device *dev = platform_get_drvdata(pdev); | |
1958 | struct net_local *lp = netdev_priv(dev); | |
09dcd604 | 1959 | struct resource *mem_res; |
e9460a9e | 1960 | |
204a38ab | 1961 | /* This platform_get_resource() call will not return NULL, because |
09dcd604 JB |
1962 | * the same call in cs89x0_platform_probe() has returned a non NULL |
1963 | * value. | |
1964 | */ | |
1965 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
e9460a9e JB |
1966 | unregister_netdev(dev); |
1967 | iounmap(lp->virt_addr); | |
09dcd604 | 1968 | release_mem_region(mem_res->start, lp->size); |
e9460a9e JB |
1969 | free_netdev(dev); |
1970 | return 0; | |
1971 | } | |
1972 | ||
1973 | static struct platform_driver cs89x0_driver = { | |
1974 | .driver = { | |
1975 | .name = DRV_NAME, | |
1976 | .owner = THIS_MODULE, | |
1977 | }, | |
1978 | .remove = cs89x0_platform_remove, | |
1979 | }; | |
1980 | ||
1981 | static int __init cs89x0_init(void) | |
1982 | { | |
1983 | return platform_driver_probe(&cs89x0_driver, cs89x0_platform_probe); | |
1984 | } | |
1985 | ||
1986 | module_init(cs89x0_init); | |
1987 | ||
1988 | static void __exit cs89x0_cleanup(void) | |
1989 | { | |
1990 | platform_driver_unregister(&cs89x0_driver); | |
1991 | } | |
1992 | ||
1993 | module_exit(cs89x0_cleanup); | |
1994 | ||
1995 | #endif /* CONFIG_CS89x0_PLATFORM */ |