Commit | Line | Data |
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1da177e4 LT |
1 | /* mac89x0.c: A Crystal Semiconductor CS89[02]0 driver for linux. */ |
2 | /* | |
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, 11 Grant St., Potsdam, NY 13676 | |
11 | ||
12 | Changelog: | |
13 | ||
14 | Mike Cruse : mcruse@cti-ltd.com | |
6aa20a22 | 15 | : Changes for Linux 2.0 compatibility. |
1da177e4 LT |
16 | : Added dev_id parameter in net_interrupt(), |
17 | : request_irq() and free_irq(). Just NULL for now. | |
18 | ||
19 | Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros | |
20 | : in net_open() and net_close() so kerneld would know | |
6aa20a22 | 21 | : that the module is in use and wouldn't eject the |
1da177e4 LT |
22 | : driver prematurely. |
23 | ||
24 | Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c | |
25 | : as an example. Disabled autoprobing in init_module(), | |
26 | : not a good thing to do to other devices while Linux | |
27 | : is running from all accounts. | |
6aa20a22 | 28 | |
1da177e4 LT |
29 | Alan Cox : Removed 1.2 support, added 2.1 extra counters. |
30 | ||
31 | David Huggins-Daines <dhd@debian.org> | |
6aa20a22 | 32 | |
1da177e4 LT |
33 | Split this off into mac89x0.c, and gutted it of all parts which are |
34 | not relevant to the existing CS8900 cards on the Macintosh | |
35 | (i.e. basically the Daynaport CS and LC cards). To be precise: | |
36 | ||
37 | * Removed all the media-detection stuff, because these cards are | |
38 | TP-only. | |
39 | ||
40 | * Lobotomized the ISA interrupt bogosity, because these cards use | |
41 | a hardwired NuBus interrupt and a magic ISAIRQ value in the card. | |
42 | ||
43 | * Basically eliminated everything not relevant to getting the | |
44 | cards minimally functioning on the Macintosh. | |
45 | ||
46 | I might add that these cards are badly designed even from the Mac | |
47 | standpoint, in that Dayna, in their infinite wisdom, used NuBus slot | |
48 | I/O space and NuBus interrupts for these cards, but neglected to | |
49 | provide anything even remotely resembling a NuBus ROM. Therefore we | |
50 | have to probe for them in a brain-damaged ISA-like fashion. | |
51 | ||
52 | Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 11/01/2001 | |
53 | check kmalloc and release the allocated memory on failure in | |
54 | mac89x0_probe and in init_module | |
55 | use local_irq_{save,restore}(flags) in net_get_stat, not just | |
56 | local_irq_{dis,en}able() | |
57 | */ | |
58 | ||
59 | static char *version = | |
60 | "cs89x0.c:v1.02 11/26/96 Russell Nelson <nelson@crynwr.com>\n"; | |
61 | ||
62 | /* ======================= configure the driver here ======================= */ | |
63 | ||
64 | /* use 0 for production, 1 for verification, >2 for debug */ | |
65 | #ifndef NET_DEBUG | |
66 | #define NET_DEBUG 0 | |
67 | #endif | |
68 | ||
69 | /* ======================= end of configuration ======================= */ | |
70 | ||
71 | ||
72 | /* Always include 'config.h' first in case the user wants to turn on | |
73 | or override something. */ | |
74 | #include <linux/module.h> | |
75 | ||
1da177e4 LT |
76 | /* |
77 | Sources: | |
78 | ||
79 | Crynwr packet driver epktisa. | |
80 | ||
81 | Crystal Semiconductor data sheets. | |
82 | ||
83 | */ | |
84 | ||
85 | #include <linux/kernel.h> | |
86 | #include <linux/types.h> | |
87 | #include <linux/fcntl.h> | |
88 | #include <linux/interrupt.h> | |
89 | #include <linux/ioport.h> | |
90 | #include <linux/in.h> | |
1da177e4 LT |
91 | #include <linux/string.h> |
92 | #include <linux/nubus.h> | |
93 | #include <linux/errno.h> | |
94 | #include <linux/init.h> | |
95 | #include <linux/netdevice.h> | |
96 | #include <linux/etherdevice.h> | |
97 | #include <linux/skbuff.h> | |
98 | #include <linux/delay.h> | |
1977f032 | 99 | #include <linux/bitops.h> |
5a0e3ad6 | 100 | #include <linux/gfp.h> |
1da177e4 | 101 | |
1da177e4 LT |
102 | #include <asm/io.h> |
103 | #include <asm/hwtest.h> | |
104 | #include <asm/macints.h> | |
105 | ||
106 | #include "cs89x0.h" | |
107 | ||
108 | static unsigned int net_debug = NET_DEBUG; | |
109 | ||
110 | /* Information that need to be kept for each board. */ | |
111 | struct net_local { | |
1da177e4 LT |
112 | int chip_type; /* one of: CS8900, CS8920, CS8920M */ |
113 | char chip_revision; /* revision letter of the chip ('A'...) */ | |
114 | int send_cmd; /* the propercommand used to send a packet. */ | |
115 | int rx_mode; | |
116 | int curr_rx_cfg; | |
117 | int send_underrun; /* keep track of how many underruns in a row we get */ | |
118 | struct sk_buff *skb; | |
119 | }; | |
120 | ||
121 | /* Index to functions, as function prototypes. */ | |
122 | ||
123 | #if 0 | |
124 | extern void reset_chip(struct net_device *dev); | |
125 | #endif | |
126 | static int net_open(struct net_device *dev); | |
39ad2cb3 | 127 | static int net_send_packet(struct sk_buff *skb, struct net_device *dev); |
7d12e780 | 128 | static irqreturn_t net_interrupt(int irq, void *dev_id); |
1da177e4 LT |
129 | static void set_multicast_list(struct net_device *dev); |
130 | static void net_rx(struct net_device *dev); | |
131 | static int net_close(struct net_device *dev); | |
132 | static struct net_device_stats *net_get_stats(struct net_device *dev); | |
133 | static int set_mac_address(struct net_device *dev, void *addr); | |
134 | ||
135 | ||
136 | /* Example routines you must write ;->. */ | |
137 | #define tx_done(dev) 1 | |
138 | ||
139 | /* For reading/writing registers ISA-style */ | |
140 | static inline int | |
141 | readreg_io(struct net_device *dev, int portno) | |
142 | { | |
143 | nubus_writew(swab16(portno), dev->base_addr + ADD_PORT); | |
144 | return swab16(nubus_readw(dev->base_addr + DATA_PORT)); | |
145 | } | |
146 | ||
147 | static inline void | |
148 | writereg_io(struct net_device *dev, int portno, int value) | |
149 | { | |
150 | nubus_writew(swab16(portno), dev->base_addr + ADD_PORT); | |
151 | nubus_writew(swab16(value), dev->base_addr + DATA_PORT); | |
152 | } | |
153 | ||
154 | /* These are for reading/writing registers in shared memory */ | |
155 | static inline int | |
156 | readreg(struct net_device *dev, int portno) | |
157 | { | |
158 | return swab16(nubus_readw(dev->mem_start + portno)); | |
159 | } | |
160 | ||
161 | static inline void | |
162 | writereg(struct net_device *dev, int portno, int value) | |
163 | { | |
164 | nubus_writew(swab16(value), dev->mem_start + portno); | |
165 | } | |
166 | ||
d0174aea AB |
167 | static const struct net_device_ops mac89x0_netdev_ops = { |
168 | .ndo_open = net_open, | |
169 | .ndo_stop = net_close, | |
170 | .ndo_start_xmit = net_send_packet, | |
171 | .ndo_get_stats = net_get_stats, | |
afc4b13d | 172 | .ndo_set_rx_mode = set_multicast_list, |
d0174aea AB |
173 | .ndo_set_mac_address = set_mac_address, |
174 | .ndo_validate_addr = eth_validate_addr, | |
175 | .ndo_change_mtu = eth_change_mtu, | |
176 | }; | |
177 | ||
1da177e4 LT |
178 | /* Probe for the CS8900 card in slot E. We won't bother looking |
179 | anywhere else until we have a really good reason to do so. */ | |
180 | struct net_device * __init mac89x0_probe(int unit) | |
181 | { | |
182 | struct net_device *dev; | |
183 | static int once_is_enough; | |
184 | struct net_local *lp; | |
185 | static unsigned version_printed; | |
186 | int i, slot; | |
187 | unsigned rev_type = 0; | |
188 | unsigned long ioaddr; | |
189 | unsigned short sig; | |
190 | int err = -ENODEV; | |
191 | ||
0f734484 GU |
192 | if (!MACH_IS_MAC) |
193 | return ERR_PTR(-ENODEV); | |
194 | ||
1da177e4 LT |
195 | dev = alloc_etherdev(sizeof(struct net_local)); |
196 | if (!dev) | |
197 | return ERR_PTR(-ENOMEM); | |
198 | ||
199 | if (unit >= 0) { | |
200 | sprintf(dev->name, "eth%d", unit); | |
201 | netdev_boot_setup_check(dev); | |
202 | } | |
203 | ||
1da177e4 LT |
204 | if (once_is_enough) |
205 | goto out; | |
206 | once_is_enough = 1; | |
207 | ||
208 | /* We might have to parameterize this later */ | |
209 | slot = 0xE; | |
210 | /* Get out now if there's a real NuBus card in slot E */ | |
211 | if (nubus_find_slot(slot, NULL) != NULL) | |
212 | goto out; | |
213 | ||
214 | /* The pseudo-ISA bits always live at offset 0x300 (gee, | |
215 | wonder why...) */ | |
216 | ioaddr = (unsigned long) | |
217 | nubus_slot_addr(slot) | (((slot&0xf) << 20) + DEFAULTIOBASE); | |
218 | { | |
1da177e4 | 219 | int card_present; |
6aa20a22 | 220 | |
7f30b742 GU |
221 | card_present = (hwreg_present((void *)ioaddr + 4) && |
222 | hwreg_present((void *)ioaddr + DATA_PORT)); | |
1da177e4 LT |
223 | if (!card_present) |
224 | goto out; | |
225 | } | |
226 | ||
227 | nubus_writew(0, ioaddr + ADD_PORT); | |
228 | sig = nubus_readw(ioaddr + DATA_PORT); | |
229 | if (sig != swab16(CHIP_EISA_ID_SIG)) | |
230 | goto out; | |
231 | ||
232 | /* Initialize the net_device structure. */ | |
233 | lp = netdev_priv(dev); | |
234 | ||
235 | /* Fill in the 'dev' fields. */ | |
236 | dev->base_addr = ioaddr; | |
6aa20a22 | 237 | dev->mem_start = (unsigned long) |
1da177e4 LT |
238 | nubus_slot_addr(slot) | (((slot&0xf) << 20) + MMIOBASE); |
239 | dev->mem_end = dev->mem_start + 0x1000; | |
240 | ||
241 | /* Turn on shared memory */ | |
242 | writereg_io(dev, PP_BusCTL, MEMORY_ON); | |
243 | ||
244 | /* get the chip type */ | |
245 | rev_type = readreg(dev, PRODUCT_ID_ADD); | |
246 | lp->chip_type = rev_type &~ REVISON_BITS; | |
247 | lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; | |
248 | ||
249 | /* Check the chip type and revision in order to set the correct send command | |
250 | CS8920 revision C and CS8900 revision F can use the faster send. */ | |
251 | lp->send_cmd = TX_AFTER_381; | |
252 | if (lp->chip_type == CS8900 && lp->chip_revision >= 'F') | |
253 | lp->send_cmd = TX_NOW; | |
254 | if (lp->chip_type != CS8900 && lp->chip_revision >= 'C') | |
255 | lp->send_cmd = TX_NOW; | |
256 | ||
257 | if (net_debug && version_printed++ == 0) | |
258 | printk(version); | |
259 | ||
260 | printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#8lx", | |
261 | dev->name, | |
262 | lp->chip_type==CS8900?'0':'2', | |
263 | lp->chip_type==CS8920M?"M":"", | |
264 | lp->chip_revision, | |
265 | dev->base_addr); | |
266 | ||
267 | /* Try to read the MAC address */ | |
268 | if ((readreg(dev, PP_SelfST) & (EEPROM_PRESENT | EEPROM_OK)) == 0) { | |
269 | printk("\nmac89x0: No EEPROM, giving up now.\n"); | |
270 | goto out1; | |
271 | } else { | |
272 | for (i = 0; i < ETH_ALEN; i += 2) { | |
273 | /* Big-endian (why??!) */ | |
274 | unsigned short s = readreg(dev, PP_IA + i); | |
275 | dev->dev_addr[i] = s >> 8; | |
276 | dev->dev_addr[i+1] = s & 0xff; | |
277 | } | |
278 | } | |
279 | ||
280 | dev->irq = SLOT2IRQ(slot); | |
1da177e4 | 281 | |
0795af57 JP |
282 | /* print the IRQ and ethernet address. */ |
283 | ||
e174961c | 284 | printk(" IRQ %d ADDR %pM\n", dev->irq, dev->dev_addr); |
1da177e4 | 285 | |
d0174aea | 286 | dev->netdev_ops = &mac89x0_netdev_ops; |
1da177e4 LT |
287 | |
288 | err = register_netdev(dev); | |
289 | if (err) | |
290 | goto out1; | |
79ea13ce | 291 | return NULL; |
1da177e4 LT |
292 | out1: |
293 | nubus_writew(0, dev->base_addr + ADD_PORT); | |
294 | out: | |
295 | free_netdev(dev); | |
296 | return ERR_PTR(err); | |
297 | } | |
298 | ||
299 | #if 0 | |
300 | /* This is useful for something, but I don't know what yet. */ | |
301 | void __init reset_chip(struct net_device *dev) | |
302 | { | |
303 | int reset_start_time; | |
304 | ||
305 | writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET); | |
306 | ||
307 | /* wait 30 ms */ | |
308 | msleep_interruptible(30); | |
309 | ||
310 | /* Wait until the chip is reset */ | |
311 | reset_start_time = jiffies; | |
312 | while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2) | |
313 | ; | |
314 | } | |
315 | #endif | |
316 | ||
317 | /* Open/initialize the board. This is called (in the current kernel) | |
318 | sometime after booting when the 'ifconfig' program is run. | |
319 | ||
320 | This routine should set everything up anew at each open, even | |
321 | registers that "should" only need to be set once at boot, so that | |
322 | there is non-reboot way to recover if something goes wrong. | |
323 | */ | |
324 | static int | |
325 | net_open(struct net_device *dev) | |
326 | { | |
327 | struct net_local *lp = netdev_priv(dev); | |
328 | int i; | |
329 | ||
330 | /* Disable the interrupt for now */ | |
331 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) & ~ENABLE_IRQ); | |
332 | ||
333 | /* Grab the interrupt */ | |
a0607fd3 | 334 | if (request_irq(dev->irq, net_interrupt, 0, "cs89x0", dev)) |
1da177e4 LT |
335 | return -EAGAIN; |
336 | ||
337 | /* Set up the IRQ - Apparently magic */ | |
338 | if (lp->chip_type == CS8900) | |
339 | writereg(dev, PP_CS8900_ISAINT, 0); | |
340 | else | |
341 | writereg(dev, PP_CS8920_ISAINT, 0); | |
342 | ||
343 | /* set the Ethernet address */ | |
344 | for (i=0; i < ETH_ALEN/2; i++) | |
345 | writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); | |
346 | ||
347 | /* Turn on both receive and transmit operations */ | |
348 | writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); | |
349 | ||
350 | /* Receive only error free packets addressed to this card */ | |
351 | lp->rx_mode = 0; | |
352 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT); | |
353 | ||
354 | lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL; | |
355 | ||
356 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg); | |
357 | ||
358 | writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL | | |
359 | TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL); | |
360 | ||
361 | writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL | | |
362 | TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL); | |
363 | ||
364 | /* now that we've got our act together, enable everything */ | |
365 | writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ); | |
366 | netif_start_queue(dev); | |
367 | return 0; | |
368 | } | |
369 | ||
370 | static int | |
371 | net_send_packet(struct sk_buff *skb, struct net_device *dev) | |
372 | { | |
39ad2cb3 MU |
373 | struct net_local *lp = netdev_priv(dev); |
374 | unsigned long flags; | |
1da177e4 | 375 | |
39ad2cb3 MU |
376 | if (net_debug > 3) |
377 | printk("%s: sent %d byte packet of type %x\n", | |
378 | dev->name, skb->len, | |
379 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | |
380 | | skb->data[ETH_ALEN+ETH_ALEN+1]); | |
1da177e4 | 381 | |
39ad2cb3 MU |
382 | /* keep the upload from being interrupted, since we |
383 | ask the chip to start transmitting before the | |
384 | whole packet has been completely uploaded. */ | |
385 | local_irq_save(flags); | |
386 | netif_stop_queue(dev); | |
1da177e4 | 387 | |
39ad2cb3 MU |
388 | /* initiate a transmit sequence */ |
389 | writereg(dev, PP_TxCMD, lp->send_cmd); | |
390 | writereg(dev, PP_TxLength, skb->len); | |
1da177e4 | 391 | |
39ad2cb3 MU |
392 | /* Test to see if the chip has allocated memory for the packet */ |
393 | if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) { | |
394 | /* Gasp! It hasn't. But that shouldn't happen since | |
395 | we're waiting for TxOk, so return 1 and requeue this packet. */ | |
1da177e4 | 396 | local_irq_restore(flags); |
5b548140 | 397 | return NETDEV_TX_BUSY; |
1da177e4 | 398 | } |
39ad2cb3 MU |
399 | |
400 | /* Write the contents of the packet */ | |
401 | skb_copy_from_linear_data(skb, (void *)(dev->mem_start + PP_TxFrame), | |
402 | skb->len+1); | |
403 | ||
404 | local_irq_restore(flags); | |
1da177e4 LT |
405 | dev_kfree_skb (skb); |
406 | ||
6ed10654 | 407 | return NETDEV_TX_OK; |
1da177e4 | 408 | } |
6aa20a22 | 409 | |
1da177e4 LT |
410 | /* The typical workload of the driver: |
411 | Handle the network interface interrupts. */ | |
7d12e780 | 412 | static irqreturn_t net_interrupt(int irq, void *dev_id) |
1da177e4 LT |
413 | { |
414 | struct net_device *dev = dev_id; | |
415 | struct net_local *lp; | |
416 | int ioaddr, status; | |
417 | ||
418 | if (dev == NULL) { | |
419 | printk ("net_interrupt(): irq %d for unknown device.\n", irq); | |
420 | return IRQ_NONE; | |
421 | } | |
1da177e4 LT |
422 | |
423 | ioaddr = dev->base_addr; | |
424 | lp = netdev_priv(dev); | |
425 | ||
426 | /* we MUST read all the events out of the ISQ, otherwise we'll never | |
427 | get interrupted again. As a consequence, we can't have any limit | |
428 | on the number of times we loop in the interrupt handler. The | |
429 | hardware guarantees that eventually we'll run out of events. Of | |
430 | course, if you're on a slow machine, and packets are arriving | |
431 | faster than you can read them off, you're screwed. Hasta la | |
432 | vista, baby! */ | |
433 | while ((status = swab16(nubus_readw(dev->base_addr + ISQ_PORT)))) { | |
434 | if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status); | |
435 | switch(status & ISQ_EVENT_MASK) { | |
436 | case ISQ_RECEIVER_EVENT: | |
437 | /* Got a packet(s). */ | |
438 | net_rx(dev); | |
439 | break; | |
440 | case ISQ_TRANSMITTER_EVENT: | |
174afef4 | 441 | dev->stats.tx_packets++; |
39ad2cb3 | 442 | netif_wake_queue(dev); |
174afef4 KV |
443 | if ((status & TX_OK) == 0) |
444 | dev->stats.tx_errors++; | |
445 | if (status & TX_LOST_CRS) | |
446 | dev->stats.tx_carrier_errors++; | |
447 | if (status & TX_SQE_ERROR) | |
448 | dev->stats.tx_heartbeat_errors++; | |
449 | if (status & TX_LATE_COL) | |
450 | dev->stats.tx_window_errors++; | |
451 | if (status & TX_16_COL) | |
452 | dev->stats.tx_aborted_errors++; | |
1da177e4 LT |
453 | break; |
454 | case ISQ_BUFFER_EVENT: | |
455 | if (status & READY_FOR_TX) { | |
456 | /* we tried to transmit a packet earlier, | |
457 | but inexplicably ran out of buffers. | |
458 | That shouldn't happen since we only ever | |
459 | load one packet. Shrug. Do the right | |
460 | thing anyway. */ | |
39ad2cb3 | 461 | netif_wake_queue(dev); |
1da177e4 LT |
462 | } |
463 | if (status & TX_UNDERRUN) { | |
464 | if (net_debug > 0) printk("%s: transmit underrun\n", dev->name); | |
465 | lp->send_underrun++; | |
466 | if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381; | |
467 | else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL; | |
468 | } | |
469 | break; | |
470 | case ISQ_RX_MISS_EVENT: | |
174afef4 | 471 | dev->stats.rx_missed_errors += (status >> 6); |
1da177e4 LT |
472 | break; |
473 | case ISQ_TX_COL_EVENT: | |
174afef4 | 474 | dev->stats.collisions += (status >> 6); |
1da177e4 LT |
475 | break; |
476 | } | |
477 | } | |
1da177e4 LT |
478 | return IRQ_HANDLED; |
479 | } | |
480 | ||
481 | /* We have a good packet(s), get it/them out of the buffers. */ | |
482 | static void | |
483 | net_rx(struct net_device *dev) | |
484 | { | |
1da177e4 LT |
485 | struct sk_buff *skb; |
486 | int status, length; | |
487 | ||
488 | status = readreg(dev, PP_RxStatus); | |
489 | if ((status & RX_OK) == 0) { | |
174afef4 KV |
490 | dev->stats.rx_errors++; |
491 | if (status & RX_RUNT) | |
492 | dev->stats.rx_length_errors++; | |
493 | if (status & RX_EXTRA_DATA) | |
494 | dev->stats.rx_length_errors++; | |
495 | if ((status & RX_CRC_ERROR) && | |
496 | !(status & (RX_EXTRA_DATA|RX_RUNT))) | |
1da177e4 | 497 | /* per str 172 */ |
174afef4 KV |
498 | dev->stats.rx_crc_errors++; |
499 | if (status & RX_DRIBBLE) | |
500 | dev->stats.rx_frame_errors++; | |
1da177e4 LT |
501 | return; |
502 | } | |
503 | ||
504 | length = readreg(dev, PP_RxLength); | |
505 | /* Malloc up new buffer. */ | |
506 | skb = alloc_skb(length, GFP_ATOMIC); | |
507 | if (skb == NULL) { | |
508 | printk("%s: Memory squeeze, dropping packet.\n", dev->name); | |
174afef4 | 509 | dev->stats.rx_dropped++; |
1da177e4 LT |
510 | return; |
511 | } | |
512 | skb_put(skb, length); | |
1da177e4 | 513 | |
39ad2cb3 MU |
514 | skb_copy_to_linear_data(skb, (void *)(dev->mem_start + PP_RxFrame), |
515 | length); | |
1da177e4 LT |
516 | |
517 | if (net_debug > 3)printk("%s: received %d byte packet of type %x\n", | |
518 | dev->name, length, | |
519 | (skb->data[ETH_ALEN+ETH_ALEN] << 8) | |
520 | | skb->data[ETH_ALEN+ETH_ALEN+1]); | |
521 | ||
522 | skb->protocol=eth_type_trans(skb,dev); | |
523 | netif_rx(skb); | |
174afef4 KV |
524 | dev->stats.rx_packets++; |
525 | dev->stats.rx_bytes += length; | |
1da177e4 LT |
526 | } |
527 | ||
528 | /* The inverse routine to net_open(). */ | |
529 | static int | |
530 | net_close(struct net_device *dev) | |
531 | { | |
532 | ||
533 | writereg(dev, PP_RxCFG, 0); | |
534 | writereg(dev, PP_TxCFG, 0); | |
535 | writereg(dev, PP_BufCFG, 0); | |
536 | writereg(dev, PP_BusCTL, 0); | |
537 | ||
538 | netif_stop_queue(dev); | |
539 | ||
540 | free_irq(dev->irq, dev); | |
541 | ||
542 | /* Update the statistics here. */ | |
543 | ||
544 | return 0; | |
545 | ||
546 | } | |
547 | ||
548 | /* Get the current statistics. This may be called with the card open or | |
549 | closed. */ | |
550 | static struct net_device_stats * | |
551 | net_get_stats(struct net_device *dev) | |
552 | { | |
1da177e4 LT |
553 | unsigned long flags; |
554 | ||
555 | local_irq_save(flags); | |
556 | /* Update the statistics from the device registers. */ | |
174afef4 KV |
557 | dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6); |
558 | dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6); | |
1da177e4 LT |
559 | local_irq_restore(flags); |
560 | ||
174afef4 | 561 | return &dev->stats; |
1da177e4 LT |
562 | } |
563 | ||
564 | static void set_multicast_list(struct net_device *dev) | |
565 | { | |
566 | struct net_local *lp = netdev_priv(dev); | |
567 | ||
568 | if(dev->flags&IFF_PROMISC) | |
569 | { | |
570 | lp->rx_mode = RX_ALL_ACCEPT; | |
f9dcbcc9 | 571 | } else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) { |
1da177e4 LT |
572 | /* The multicast-accept list is initialized to accept-all, and we |
573 | rely on higher-level filtering for now. */ | |
574 | lp->rx_mode = RX_MULTCAST_ACCEPT; | |
6aa20a22 | 575 | } |
1da177e4 LT |
576 | else |
577 | lp->rx_mode = 0; | |
578 | ||
579 | writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode); | |
580 | ||
581 | /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */ | |
582 | writereg(dev, PP_RxCFG, lp->curr_rx_cfg | | |
583 | (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0)); | |
584 | } | |
585 | ||
586 | ||
587 | static int set_mac_address(struct net_device *dev, void *addr) | |
588 | { | |
66dc92ed | 589 | struct sockaddr *saddr = addr; |
9100eb01 | 590 | int i; |
66dc92ed | 591 | |
9100eb01 | 592 | if (!is_valid_ether_addr(saddr->sa_data)) |
66dc92ed DK |
593 | return -EADDRNOTAVAIL; |
594 | ||
9100eb01 | 595 | memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); |
66dc92ed DK |
596 | printk("%s: Setting MAC address to %pM\n", dev->name, dev->dev_addr); |
597 | ||
1da177e4 LT |
598 | /* set the Ethernet address */ |
599 | for (i=0; i < ETH_ALEN/2; i++) | |
600 | writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
605 | #ifdef MODULE | |
606 | ||
607 | static struct net_device *dev_cs89x0; | |
608 | static int debug; | |
609 | ||
8d3b33f6 | 610 | module_param(debug, int, 0); |
1da177e4 LT |
611 | MODULE_PARM_DESC(debug, "CS89[02]0 debug level (0-5)"); |
612 | MODULE_LICENSE("GPL"); | |
613 | ||
446df4c1 | 614 | int __init |
1da177e4 LT |
615 | init_module(void) |
616 | { | |
617 | net_debug = debug; | |
618 | dev_cs89x0 = mac89x0_probe(-1); | |
619 | if (IS_ERR(dev_cs89x0)) { | |
620 | printk(KERN_WARNING "mac89x0.c: No card found\n"); | |
621 | return PTR_ERR(dev_cs89x0); | |
622 | } | |
623 | return 0; | |
624 | } | |
625 | ||
626 | void | |
627 | cleanup_module(void) | |
628 | { | |
629 | unregister_netdev(dev_cs89x0); | |
630 | nubus_writew(0, dev_cs89x0->base_addr + ADD_PORT); | |
631 | free_netdev(dev_cs89x0); | |
632 | } | |
633 | #endif /* MODULE */ |