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1 | /* seeq8005.c: A network driver for linux. */ |
2 | /* | |
3 | Based on skeleton.c, | |
4 | Written 1993-94 by Donald Becker. | |
5 | See the skeleton.c file for further copyright information. | |
6 | ||
7 | This software may be used and distributed according to the terms | |
8 | of the GNU General Public License, incorporated herein by reference. | |
9 | ||
10 | The author may be reached as hamish@zot.apana.org.au | |
11 | ||
12 | This file is a network device driver for the SEEQ 8005 chipset and | |
13 | the Linux operating system. | |
14 | ||
15 | */ | |
16 | ||
17 | static const char version[] = | |
18 | "seeq8005.c:v1.00 8/07/95 Hamish Coleman (hamish@zot.apana.org.au)\n"; | |
19 | ||
20 | /* | |
21 | Sources: | |
22 | SEEQ 8005 databook | |
23 | ||
24 | Version history: | |
25 | 1.00 Public release. cosmetic changes (no warnings now) | |
26 | 0.68 Turning per- packet,interrupt debug messages off - testing for release. | |
27 | 0.67 timing problems/bad buffer reads seem to be fixed now | |
28 | 0.63 *!@$ protocol=eth_type_trans -- now packets flow | |
29 | 0.56 Send working | |
30 | 0.48 Receive working | |
31 | */ | |
32 | ||
33 | #include <linux/module.h> | |
34 | #include <linux/kernel.h> | |
35 | #include <linux/types.h> | |
36 | #include <linux/fcntl.h> | |
37 | #include <linux/interrupt.h> | |
38 | #include <linux/ioport.h> | |
39 | #include <linux/in.h> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/string.h> | |
42 | #include <linux/init.h> | |
43 | #include <linux/delay.h> | |
44 | #include <linux/errno.h> | |
45 | #include <linux/netdevice.h> | |
46 | #include <linux/etherdevice.h> | |
47 | #include <linux/skbuff.h> | |
48 | #include <linux/bitops.h> | |
49 | ||
50 | #include <asm/system.h> | |
51 | #include <asm/io.h> | |
52 | #include <asm/dma.h> | |
53 | ||
54 | #include "seeq8005.h" | |
55 | ||
56 | /* First, a few definitions that the brave might change. */ | |
57 | /* A zero-terminated list of I/O addresses to be probed. */ | |
58 | static unsigned int seeq8005_portlist[] __initdata = | |
59 | { 0x300, 0x320, 0x340, 0x360, 0}; | |
60 | ||
61 | /* use 0 for production, 1 for verification, >2 for debug */ | |
62 | #ifndef NET_DEBUG | |
63 | #define NET_DEBUG 1 | |
64 | #endif | |
65 | static unsigned int net_debug = NET_DEBUG; | |
66 | ||
67 | /* Information that need to be kept for each board. */ | |
68 | struct net_local { | |
69 | struct net_device_stats stats; | |
70 | unsigned short receive_ptr; /* What address in packet memory do we expect a recv_pkt_header? */ | |
71 | long open_time; /* Useless example local info. */ | |
72 | }; | |
73 | ||
74 | /* The station (ethernet) address prefix, used for IDing the board. */ | |
75 | #define SA_ADDR0 0x00 | |
76 | #define SA_ADDR1 0x80 | |
77 | #define SA_ADDR2 0x4b | |
78 | ||
79 | /* Index to functions, as function prototypes. */ | |
80 | ||
81 | static int seeq8005_probe1(struct net_device *dev, int ioaddr); | |
82 | static int seeq8005_open(struct net_device *dev); | |
83 | static void seeq8005_timeout(struct net_device *dev); | |
84 | static int seeq8005_send_packet(struct sk_buff *skb, struct net_device *dev); | |
85 | static irqreturn_t seeq8005_interrupt(int irq, void *dev_id, struct pt_regs *regs); | |
86 | static void seeq8005_rx(struct net_device *dev); | |
87 | static int seeq8005_close(struct net_device *dev); | |
88 | static struct net_device_stats *seeq8005_get_stats(struct net_device *dev); | |
89 | static void set_multicast_list(struct net_device *dev); | |
90 | ||
91 | /* Example routines you must write ;->. */ | |
92 | #define tx_done(dev) (inw(SEEQ_STATUS) & SEEQSTAT_TX_ON) | |
93 | static void hardware_send_packet(struct net_device *dev, char *buf, int length); | |
94 | extern void seeq8005_init(struct net_device *dev, int startp); | |
95 | static inline void wait_for_buffer(struct net_device *dev); | |
96 | ||
97 | \f | |
98 | /* Check for a network adaptor of this type, and return '0' iff one exists. | |
99 | If dev->base_addr == 0, probe all likely locations. | |
100 | If dev->base_addr == 1, always return failure. | |
101 | */ | |
102 | ||
103 | static int io = 0x320; | |
104 | static int irq = 10; | |
105 | ||
106 | struct net_device * __init seeq8005_probe(int unit) | |
107 | { | |
108 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
109 | unsigned *port; | |
110 | int err = 0; | |
111 | ||
112 | if (!dev) | |
113 | return ERR_PTR(-ENODEV); | |
114 | ||
115 | if (unit >= 0) { | |
116 | sprintf(dev->name, "eth%d", unit); | |
117 | netdev_boot_setup_check(dev); | |
118 | io = dev->base_addr; | |
119 | irq = dev->irq; | |
120 | } | |
121 | ||
122 | if (io > 0x1ff) { /* Check a single specified location. */ | |
123 | err = seeq8005_probe1(dev, io); | |
124 | } else if (io != 0) { /* Don't probe at all. */ | |
125 | err = -ENXIO; | |
126 | } else { | |
127 | for (port = seeq8005_portlist; *port; port++) { | |
128 | if (seeq8005_probe1(dev, *port) == 0) | |
129 | break; | |
130 | } | |
131 | if (!*port) | |
132 | err = -ENODEV; | |
133 | } | |
134 | if (err) | |
135 | goto out; | |
136 | err = register_netdev(dev); | |
137 | if (err) | |
138 | goto out1; | |
139 | return dev; | |
140 | out1: | |
141 | release_region(dev->base_addr, SEEQ8005_IO_EXTENT); | |
142 | out: | |
143 | free_netdev(dev); | |
144 | return ERR_PTR(err); | |
145 | } | |
146 | ||
147 | /* This is the real probe routine. Linux has a history of friendly device | |
148 | probes on the ISA bus. A good device probes avoids doing writes, and | |
149 | verifies that the correct device exists and functions. */ | |
150 | ||
151 | static int __init seeq8005_probe1(struct net_device *dev, int ioaddr) | |
152 | { | |
153 | static unsigned version_printed; | |
154 | int i,j; | |
155 | unsigned char SA_prom[32]; | |
156 | int old_cfg1; | |
157 | int old_cfg2; | |
158 | int old_stat; | |
159 | int old_dmaar; | |
160 | int old_rear; | |
161 | int retval; | |
162 | ||
163 | if (!request_region(ioaddr, SEEQ8005_IO_EXTENT, "seeq8005")) | |
164 | return -ENODEV; | |
165 | ||
166 | if (net_debug>1) | |
167 | printk("seeq8005: probing at 0x%x\n",ioaddr); | |
168 | ||
169 | old_stat = inw(SEEQ_STATUS); /* read status register */ | |
170 | if (old_stat == 0xffff) { | |
171 | retval = -ENODEV; | |
172 | goto out; /* assume that 0xffff == no device */ | |
173 | } | |
174 | if ( (old_stat & 0x1800) != 0x1800 ) { /* assume that unused bits are 1, as my manual says */ | |
175 | if (net_debug>1) { | |
176 | printk("seeq8005: reserved stat bits != 0x1800\n"); | |
177 | printk(" == 0x%04x\n",old_stat); | |
178 | } | |
179 | retval = -ENODEV; | |
180 | goto out; | |
181 | } | |
182 | ||
183 | old_rear = inw(SEEQ_REA); | |
184 | if (old_rear == 0xffff) { | |
185 | outw(0,SEEQ_REA); | |
186 | if (inw(SEEQ_REA) == 0xffff) { /* assume that 0xffff == no device */ | |
187 | retval = -ENODEV; | |
188 | goto out; | |
189 | } | |
190 | } else if ((old_rear & 0xff00) != 0xff00) { /* assume that unused bits are 1 */ | |
191 | if (net_debug>1) { | |
192 | printk("seeq8005: unused rear bits != 0xff00\n"); | |
193 | printk(" == 0x%04x\n",old_rear); | |
194 | } | |
195 | retval = -ENODEV; | |
196 | goto out; | |
197 | } | |
198 | ||
199 | old_cfg2 = inw(SEEQ_CFG2); /* read CFG2 register */ | |
200 | old_cfg1 = inw(SEEQ_CFG1); | |
201 | old_dmaar = inw(SEEQ_DMAAR); | |
202 | ||
203 | if (net_debug>4) { | |
204 | printk("seeq8005: stat = 0x%04x\n",old_stat); | |
205 | printk("seeq8005: cfg1 = 0x%04x\n",old_cfg1); | |
206 | printk("seeq8005: cfg2 = 0x%04x\n",old_cfg2); | |
207 | printk("seeq8005: raer = 0x%04x\n",old_rear); | |
208 | printk("seeq8005: dmaar= 0x%04x\n",old_dmaar); | |
209 | } | |
210 | ||
211 | outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD); /* setup for reading PROM */ | |
212 | outw( 0, SEEQ_DMAAR); /* set starting PROM address */ | |
213 | outw( SEEQCFG1_BUFFER_PROM, SEEQ_CFG1); /* set buffer to look at PROM */ | |
214 | ||
215 | ||
216 | j=0; | |
217 | for(i=0; i <32; i++) { | |
218 | j+= SA_prom[i] = inw(SEEQ_BUFFER) & 0xff; | |
219 | } | |
220 | ||
221 | #if 0 | |
222 | /* untested because I only have the one card */ | |
223 | if ( (j&0xff) != 0 ) { /* checksum appears to be 8bit = 0 */ | |
224 | if (net_debug>1) { /* check this before deciding that we have a card */ | |
225 | printk("seeq8005: prom sum error\n"); | |
226 | } | |
227 | outw( old_stat, SEEQ_STATUS); | |
228 | outw( old_dmaar, SEEQ_DMAAR); | |
229 | outw( old_cfg1, SEEQ_CFG1); | |
230 | retval = -ENODEV; | |
231 | goto out; | |
232 | } | |
233 | #endif | |
234 | ||
235 | outw( SEEQCFG2_RESET, SEEQ_CFG2); /* reset the card */ | |
236 | udelay(5); | |
237 | outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD); | |
238 | ||
239 | if (net_debug) { | |
240 | printk("seeq8005: prom sum = 0x%08x\n",j); | |
241 | for(j=0; j<32; j+=16) { | |
242 | printk("seeq8005: prom %02x: ",j); | |
243 | for(i=0;i<16;i++) { | |
244 | printk("%02x ",SA_prom[j|i]); | |
245 | } | |
246 | printk(" "); | |
247 | for(i=0;i<16;i++) { | |
248 | if ((SA_prom[j|i]>31)&&(SA_prom[j|i]<127)) { | |
249 | printk("%c", SA_prom[j|i]); | |
250 | } else { | |
251 | printk(" "); | |
252 | } | |
253 | } | |
254 | printk("\n"); | |
255 | } | |
256 | } | |
257 | ||
258 | #if 0 | |
259 | /* | |
260 | * testing the packet buffer memory doesn't work yet | |
261 | * but all other buffer accesses do | |
262 | * - fixing is not a priority | |
263 | */ | |
264 | if (net_debug>1) { /* test packet buffer memory */ | |
265 | printk("seeq8005: testing packet buffer ... "); | |
266 | outw( SEEQCFG1_BUFFER_BUFFER, SEEQ_CFG1); | |
267 | outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD); | |
268 | outw( 0 , SEEQ_DMAAR); | |
269 | for(i=0;i<32768;i++) { | |
270 | outw(0x5a5a, SEEQ_BUFFER); | |
271 | } | |
272 | j=jiffies+HZ; | |
273 | while ( ((inw(SEEQ_STATUS) & SEEQSTAT_FIFO_EMPTY) != SEEQSTAT_FIFO_EMPTY) && time_before(jiffies, j) ) | |
274 | mb(); | |
275 | outw( 0 , SEEQ_DMAAR); | |
276 | while ( ((inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) != SEEQSTAT_WINDOW_INT) && time_before(jiffies, j+HZ)) | |
277 | mb(); | |
278 | if ( (inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) == SEEQSTAT_WINDOW_INT) | |
279 | outw( SEEQCMD_WINDOW_INT_ACK | (inw(SEEQ_STATUS)& SEEQCMD_INT_MASK), SEEQ_CMD); | |
280 | outw( SEEQCMD_FIFO_READ | SEEQCMD_SET_ALL_OFF, SEEQ_CMD); | |
281 | j=0; | |
282 | for(i=0;i<32768;i++) { | |
283 | if (inw(SEEQ_BUFFER) != 0x5a5a) | |
284 | j++; | |
285 | } | |
286 | if (j) { | |
287 | printk("%i\n",j); | |
288 | } else { | |
289 | printk("ok.\n"); | |
290 | } | |
291 | } | |
292 | #endif | |
293 | ||
294 | if (net_debug && version_printed++ == 0) | |
295 | printk(version); | |
296 | ||
297 | printk("%s: %s found at %#3x, ", dev->name, "seeq8005", ioaddr); | |
298 | ||
299 | /* Fill in the 'dev' fields. */ | |
300 | dev->base_addr = ioaddr; | |
301 | dev->irq = irq; | |
302 | ||
303 | /* Retrieve and print the ethernet address. */ | |
304 | for (i = 0; i < 6; i++) | |
305 | printk(" %2.2x", dev->dev_addr[i] = SA_prom[i+6]); | |
306 | ||
307 | if (dev->irq == 0xff) | |
308 | ; /* Do nothing: a user-level program will set it. */ | |
309 | else if (dev->irq < 2) { /* "Auto-IRQ" */ | |
310 | unsigned long cookie = probe_irq_on(); | |
311 | ||
312 | outw( SEEQCMD_RX_INT_EN | SEEQCMD_SET_RX_ON | SEEQCMD_SET_RX_OFF, SEEQ_CMD ); | |
313 | ||
314 | dev->irq = probe_irq_off(cookie); | |
315 | ||
316 | if (net_debug >= 2) | |
317 | printk(" autoirq is %d\n", dev->irq); | |
318 | } else if (dev->irq == 2) | |
319 | /* Fixup for users that don't know that IRQ 2 is really IRQ 9, | |
320 | * or don't know which one to set. | |
321 | */ | |
322 | dev->irq = 9; | |
323 | ||
324 | #if 0 | |
325 | { | |
326 | int irqval = request_irq(dev->irq, &seeq8005_interrupt, 0, "seeq8005", dev); | |
327 | if (irqval) { | |
328 | printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name, | |
329 | dev->irq, irqval); | |
330 | retval = -EAGAIN; | |
331 | goto out; | |
332 | } | |
333 | } | |
334 | #endif | |
335 | dev->open = seeq8005_open; | |
336 | dev->stop = seeq8005_close; | |
337 | dev->hard_start_xmit = seeq8005_send_packet; | |
338 | dev->tx_timeout = seeq8005_timeout; | |
339 | dev->watchdog_timeo = HZ/20; | |
340 | dev->get_stats = seeq8005_get_stats; | |
341 | dev->set_multicast_list = set_multicast_list; | |
342 | dev->flags &= ~IFF_MULTICAST; | |
343 | ||
344 | return 0; | |
345 | out: | |
346 | release_region(ioaddr, SEEQ8005_IO_EXTENT); | |
347 | return retval; | |
348 | } | |
349 | ||
350 | \f | |
351 | /* Open/initialize the board. This is called (in the current kernel) | |
352 | sometime after booting when the 'ifconfig' program is run. | |
353 | ||
354 | This routine should set everything up anew at each open, even | |
355 | registers that "should" only need to be set once at boot, so that | |
356 | there is non-reboot way to recover if something goes wrong. | |
357 | */ | |
358 | static int seeq8005_open(struct net_device *dev) | |
359 | { | |
360 | struct net_local *lp = netdev_priv(dev); | |
361 | ||
362 | { | |
363 | int irqval = request_irq(dev->irq, &seeq8005_interrupt, 0, "seeq8005", dev); | |
364 | if (irqval) { | |
365 | printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name, | |
366 | dev->irq, irqval); | |
367 | return -EAGAIN; | |
368 | } | |
369 | } | |
370 | ||
371 | /* Reset the hardware here. Don't forget to set the station address. */ | |
372 | seeq8005_init(dev, 1); | |
373 | ||
374 | lp->open_time = jiffies; | |
375 | ||
376 | netif_start_queue(dev); | |
377 | return 0; | |
378 | } | |
379 | ||
380 | static void seeq8005_timeout(struct net_device *dev) | |
381 | { | |
382 | int ioaddr = dev->base_addr; | |
383 | printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, | |
384 | tx_done(dev) ? "IRQ conflict" : "network cable problem"); | |
385 | /* Try to restart the adaptor. */ | |
386 | seeq8005_init(dev, 1); | |
387 | dev->trans_start = jiffies; | |
388 | netif_wake_queue(dev); | |
389 | } | |
390 | ||
391 | static int seeq8005_send_packet(struct sk_buff *skb, struct net_device *dev) | |
392 | { | |
393 | struct net_local *lp = netdev_priv(dev); | |
394 | short length = skb->len; | |
395 | unsigned char *buf; | |
396 | ||
397 | if (length < ETH_ZLEN) { | |
398 | skb = skb_padto(skb, ETH_ZLEN); | |
399 | if (skb == NULL) | |
400 | return 0; | |
401 | length = ETH_ZLEN; | |
402 | } | |
403 | buf = skb->data; | |
404 | ||
405 | /* Block a timer-based transmit from overlapping */ | |
406 | netif_stop_queue(dev); | |
407 | ||
408 | hardware_send_packet(dev, buf, length); | |
409 | dev->trans_start = jiffies; | |
410 | lp->stats.tx_bytes += length; | |
411 | dev_kfree_skb (skb); | |
412 | /* You might need to clean up and record Tx statistics here. */ | |
413 | ||
414 | return 0; | |
415 | } | |
416 | \f | |
417 | /* | |
418 | * wait_for_buffer | |
419 | * | |
420 | * This routine waits for the SEEQ chip to assert that the FIFO is ready | |
421 | * by checking for a window interrupt, and then clearing it. This has to | |
422 | * occur in the interrupt handler! | |
423 | */ | |
424 | inline void wait_for_buffer(struct net_device * dev) | |
425 | { | |
426 | int ioaddr = dev->base_addr; | |
427 | unsigned long tmp; | |
428 | int status; | |
429 | ||
430 | tmp = jiffies + HZ; | |
431 | while ( ( ((status=inw(SEEQ_STATUS)) & SEEQSTAT_WINDOW_INT) != SEEQSTAT_WINDOW_INT) && time_before(jiffies, tmp)) | |
432 | cpu_relax(); | |
433 | ||
434 | if ( (status & SEEQSTAT_WINDOW_INT) == SEEQSTAT_WINDOW_INT) | |
435 | outw( SEEQCMD_WINDOW_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD); | |
436 | } | |
437 | \f | |
438 | /* The typical workload of the driver: | |
439 | Handle the network interface interrupts. */ | |
440 | static irqreturn_t seeq8005_interrupt(int irq, void *dev_id, struct pt_regs * regs) | |
441 | { | |
442 | struct net_device *dev = dev_id; | |
443 | struct net_local *lp; | |
444 | int ioaddr, status, boguscount = 0; | |
445 | int handled = 0; | |
446 | ||
447 | ioaddr = dev->base_addr; | |
448 | lp = netdev_priv(dev); | |
449 | ||
450 | status = inw(SEEQ_STATUS); | |
451 | do { | |
452 | if (net_debug >2) { | |
453 | printk("%s: int, status=0x%04x\n",dev->name,status); | |
454 | } | |
455 | ||
456 | if (status & SEEQSTAT_WINDOW_INT) { | |
457 | handled = 1; | |
458 | outw( SEEQCMD_WINDOW_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD); | |
459 | if (net_debug) { | |
460 | printk("%s: window int!\n",dev->name); | |
461 | } | |
462 | } | |
463 | if (status & SEEQSTAT_TX_INT) { | |
464 | handled = 1; | |
465 | outw( SEEQCMD_TX_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD); | |
466 | lp->stats.tx_packets++; | |
467 | netif_wake_queue(dev); /* Inform upper layers. */ | |
468 | } | |
469 | if (status & SEEQSTAT_RX_INT) { | |
470 | handled = 1; | |
471 | /* Got a packet(s). */ | |
472 | seeq8005_rx(dev); | |
473 | } | |
474 | status = inw(SEEQ_STATUS); | |
475 | } while ( (++boguscount < 10) && (status & SEEQSTAT_ANY_INT)) ; | |
476 | ||
477 | if(net_debug>2) { | |
478 | printk("%s: eoi\n",dev->name); | |
479 | } | |
480 | return IRQ_RETVAL(handled); | |
481 | } | |
482 | ||
483 | /* We have a good packet(s), get it/them out of the buffers. */ | |
484 | static void seeq8005_rx(struct net_device *dev) | |
485 | { | |
486 | struct net_local *lp = netdev_priv(dev); | |
487 | int boguscount = 10; | |
488 | int pkt_hdr; | |
489 | int ioaddr = dev->base_addr; | |
490 | ||
491 | do { | |
492 | int next_packet; | |
493 | int pkt_len; | |
494 | int i; | |
495 | int status; | |
496 | ||
497 | status = inw(SEEQ_STATUS); | |
498 | outw( lp->receive_ptr, SEEQ_DMAAR); | |
499 | outw(SEEQCMD_FIFO_READ | SEEQCMD_RX_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD); | |
500 | wait_for_buffer(dev); | |
501 | next_packet = ntohs(inw(SEEQ_BUFFER)); | |
502 | pkt_hdr = inw(SEEQ_BUFFER); | |
503 | ||
504 | if (net_debug>2) { | |
505 | printk("%s: 0x%04x recv next=0x%04x, hdr=0x%04x\n",dev->name,lp->receive_ptr,next_packet,pkt_hdr); | |
506 | } | |
507 | ||
508 | if ((next_packet == 0) || ((pkt_hdr & SEEQPKTH_CHAIN)==0)) { /* Read all the frames? */ | |
509 | return; /* Done for now */ | |
510 | } | |
511 | ||
512 | if ((pkt_hdr & SEEQPKTS_DONE)==0) | |
513 | break; | |
514 | ||
515 | if (next_packet < lp->receive_ptr) { | |
516 | pkt_len = (next_packet + 0x10000 - ((DEFAULT_TEA+1)<<8)) - lp->receive_ptr - 4; | |
517 | } else { | |
518 | pkt_len = next_packet - lp->receive_ptr - 4; | |
519 | } | |
520 | ||
521 | if (next_packet < ((DEFAULT_TEA+1)<<8)) { /* is the next_packet address sane? */ | |
522 | printk("%s: recv packet ring corrupt, resetting board\n",dev->name); | |
523 | seeq8005_init(dev,1); | |
524 | return; | |
525 | } | |
526 | ||
527 | lp->receive_ptr = next_packet; | |
528 | ||
529 | if (net_debug>2) { | |
530 | printk("%s: recv len=0x%04x\n",dev->name,pkt_len); | |
531 | } | |
532 | ||
533 | if (pkt_hdr & SEEQPKTS_ANY_ERROR) { /* There was an error. */ | |
534 | lp->stats.rx_errors++; | |
535 | if (pkt_hdr & SEEQPKTS_SHORT) lp->stats.rx_frame_errors++; | |
536 | if (pkt_hdr & SEEQPKTS_DRIB) lp->stats.rx_frame_errors++; | |
537 | if (pkt_hdr & SEEQPKTS_OVERSIZE) lp->stats.rx_over_errors++; | |
538 | if (pkt_hdr & SEEQPKTS_CRC_ERR) lp->stats.rx_crc_errors++; | |
539 | /* skip over this packet */ | |
540 | outw( SEEQCMD_FIFO_WRITE | SEEQCMD_DMA_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD); | |
541 | outw( (lp->receive_ptr & 0xff00)>>8, SEEQ_REA); | |
542 | } else { | |
543 | /* Malloc up new buffer. */ | |
544 | struct sk_buff *skb; | |
545 | unsigned char *buf; | |
546 | ||
547 | skb = dev_alloc_skb(pkt_len); | |
548 | if (skb == NULL) { | |
549 | printk("%s: Memory squeeze, dropping packet.\n", dev->name); | |
550 | lp->stats.rx_dropped++; | |
551 | break; | |
552 | } | |
553 | skb->dev = dev; | |
554 | skb_reserve(skb, 2); /* align data on 16 byte */ | |
555 | buf = skb_put(skb,pkt_len); | |
556 | ||
557 | insw(SEEQ_BUFFER, buf, (pkt_len + 1) >> 1); | |
558 | ||
559 | if (net_debug>2) { | |
560 | char * p = buf; | |
561 | printk("%s: recv ",dev->name); | |
562 | for(i=0;i<14;i++) { | |
563 | printk("%02x ",*(p++)&0xff); | |
564 | } | |
565 | printk("\n"); | |
566 | } | |
567 | ||
568 | skb->protocol=eth_type_trans(skb,dev); | |
569 | netif_rx(skb); | |
570 | dev->last_rx = jiffies; | |
571 | lp->stats.rx_packets++; | |
572 | lp->stats.rx_bytes += pkt_len; | |
573 | } | |
574 | } while ((--boguscount) && (pkt_hdr & SEEQPKTH_CHAIN)); | |
575 | ||
576 | /* If any worth-while packets have been received, netif_rx() | |
577 | has done a mark_bh(NET_BH) for us and will work on them | |
578 | when we get to the bottom-half routine. */ | |
579 | return; | |
580 | } | |
581 | ||
582 | /* The inverse routine to net_open(). */ | |
583 | static int seeq8005_close(struct net_device *dev) | |
584 | { | |
585 | struct net_local *lp = netdev_priv(dev); | |
586 | int ioaddr = dev->base_addr; | |
587 | ||
588 | lp->open_time = 0; | |
589 | ||
590 | netif_stop_queue(dev); | |
591 | ||
592 | /* Flush the Tx and disable Rx here. */ | |
593 | outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD); | |
594 | ||
595 | free_irq(dev->irq, dev); | |
596 | ||
597 | /* Update the statistics here. */ | |
598 | ||
599 | return 0; | |
600 | ||
601 | } | |
602 | ||
603 | /* Get the current statistics. This may be called with the card open or | |
604 | closed. */ | |
605 | static struct net_device_stats *seeq8005_get_stats(struct net_device *dev) | |
606 | { | |
607 | struct net_local *lp = netdev_priv(dev); | |
608 | ||
609 | return &lp->stats; | |
610 | } | |
611 | ||
612 | /* Set or clear the multicast filter for this adaptor. | |
613 | num_addrs == -1 Promiscuous mode, receive all packets | |
614 | num_addrs == 0 Normal mode, clear multicast list | |
615 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do | |
616 | best-effort filtering. | |
617 | */ | |
618 | static void set_multicast_list(struct net_device *dev) | |
619 | { | |
620 | /* | |
621 | * I _could_ do up to 6 addresses here, but won't (yet?) | |
622 | */ | |
623 | ||
624 | #if 0 | |
625 | int ioaddr = dev->base_addr; | |
626 | /* | |
627 | * hmm, not even sure if my matching works _anyway_ - seem to be receiving | |
628 | * _everything_ . . . | |
629 | */ | |
630 | ||
631 | if (num_addrs) { /* Enable promiscuous mode */ | |
632 | outw( (inw(SEEQ_CFG1) & ~SEEQCFG1_MATCH_MASK)| SEEQCFG1_MATCH_ALL, SEEQ_CFG1); | |
633 | dev->flags|=IFF_PROMISC; | |
634 | } else { /* Disable promiscuous mode, use normal mode */ | |
635 | outw( (inw(SEEQ_CFG1) & ~SEEQCFG1_MATCH_MASK)| SEEQCFG1_MATCH_BROAD, SEEQ_CFG1); | |
636 | } | |
637 | #endif | |
638 | } | |
639 | ||
640 | void seeq8005_init(struct net_device *dev, int startp) | |
641 | { | |
642 | struct net_local *lp = netdev_priv(dev); | |
643 | int ioaddr = dev->base_addr; | |
644 | int i; | |
645 | ||
646 | outw(SEEQCFG2_RESET, SEEQ_CFG2); /* reset device */ | |
647 | udelay(5); | |
648 | ||
649 | outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD); | |
650 | outw( 0, SEEQ_DMAAR); /* load start address into both low and high byte */ | |
651 | /* wait_for_buffer(dev); */ /* I think that you only need a wait for memory buffer */ | |
652 | outw( SEEQCFG1_BUFFER_MAC0, SEEQ_CFG1); | |
653 | ||
654 | for(i=0;i<6;i++) { /* set Station address */ | |
655 | outb(dev->dev_addr[i], SEEQ_BUFFER); | |
656 | udelay(2); | |
657 | } | |
658 | ||
659 | outw( SEEQCFG1_BUFFER_TEA, SEEQ_CFG1); /* set xmit end area pointer to 16K */ | |
660 | outb( DEFAULT_TEA, SEEQ_BUFFER); /* this gives us 16K of send buffer and 48K of recv buffer */ | |
661 | ||
662 | lp->receive_ptr = (DEFAULT_TEA+1)<<8; /* so we can find our packet_header */ | |
663 | outw( lp->receive_ptr, SEEQ_RPR); /* Receive Pointer Register is set to recv buffer memory */ | |
664 | ||
665 | outw( 0x00ff, SEEQ_REA); /* Receive Area End */ | |
666 | ||
667 | if (net_debug>4) { | |
668 | printk("%s: SA0 = ",dev->name); | |
669 | ||
670 | outw( SEEQCMD_FIFO_READ | SEEQCMD_SET_ALL_OFF, SEEQ_CMD); | |
671 | outw( 0, SEEQ_DMAAR); | |
672 | outw( SEEQCFG1_BUFFER_MAC0, SEEQ_CFG1); | |
673 | ||
674 | for(i=0;i<6;i++) { | |
675 | printk("%02x ",inb(SEEQ_BUFFER)); | |
676 | } | |
677 | printk("\n"); | |
678 | } | |
679 | ||
680 | outw( SEEQCFG1_MAC0_EN | SEEQCFG1_MATCH_BROAD | SEEQCFG1_BUFFER_BUFFER, SEEQ_CFG1); | |
681 | outw( SEEQCFG2_AUTO_REA | SEEQCFG2_CTRLO, SEEQ_CFG2); | |
682 | outw( SEEQCMD_SET_RX_ON | SEEQCMD_TX_INT_EN | SEEQCMD_RX_INT_EN, SEEQ_CMD); | |
683 | ||
684 | if (net_debug>4) { | |
685 | int old_cfg1; | |
686 | old_cfg1 = inw(SEEQ_CFG1); | |
687 | printk("%s: stat = 0x%04x\n",dev->name,inw(SEEQ_STATUS)); | |
688 | printk("%s: cfg1 = 0x%04x\n",dev->name,old_cfg1); | |
689 | printk("%s: cfg2 = 0x%04x\n",dev->name,inw(SEEQ_CFG2)); | |
690 | printk("%s: raer = 0x%04x\n",dev->name,inw(SEEQ_REA)); | |
691 | printk("%s: dmaar= 0x%04x\n",dev->name,inw(SEEQ_DMAAR)); | |
692 | ||
693 | } | |
694 | } | |
695 | ||
696 | ||
697 | static void hardware_send_packet(struct net_device * dev, char *buf, int length) | |
698 | { | |
699 | int ioaddr = dev->base_addr; | |
700 | int status = inw(SEEQ_STATUS); | |
701 | int transmit_ptr = 0; | |
702 | int tmp; | |
703 | ||
704 | if (net_debug>4) { | |
705 | printk("%s: send 0x%04x\n",dev->name,length); | |
706 | } | |
707 | ||
708 | /* Set FIFO to writemode and set packet-buffer address */ | |
709 | outw( SEEQCMD_FIFO_WRITE | (status & SEEQCMD_INT_MASK), SEEQ_CMD); | |
710 | outw( transmit_ptr, SEEQ_DMAAR); | |
711 | ||
712 | /* output SEEQ Packet header barfage */ | |
713 | outw( htons(length + 4), SEEQ_BUFFER); | |
714 | outw( SEEQPKTH_XMIT | SEEQPKTH_DATA_FOLLOWS | SEEQPKTH_XMIT_INT_EN, SEEQ_BUFFER ); | |
715 | ||
716 | /* blat the buffer */ | |
717 | outsw( SEEQ_BUFFER, buf, (length +1) >> 1); | |
718 | /* paranoia !! */ | |
719 | outw( 0, SEEQ_BUFFER); | |
720 | outw( 0, SEEQ_BUFFER); | |
721 | ||
722 | /* set address of start of transmit chain */ | |
723 | outw( transmit_ptr, SEEQ_TPR); | |
724 | ||
725 | /* drain FIFO */ | |
726 | tmp = jiffies; | |
727 | while ( (((status=inw(SEEQ_STATUS)) & SEEQSTAT_FIFO_EMPTY) == 0) && (jiffies - tmp < HZ)) | |
728 | mb(); | |
729 | ||
730 | /* doit ! */ | |
731 | outw( SEEQCMD_WINDOW_INT_ACK | SEEQCMD_SET_TX_ON | (status & SEEQCMD_INT_MASK), SEEQ_CMD); | |
732 | ||
733 | } | |
734 | ||
735 | ||
736 | #ifdef MODULE | |
737 | ||
738 | static struct net_device *dev_seeq; | |
739 | MODULE_LICENSE("GPL"); | |
740 | module_param(io, int, 0); | |
741 | module_param(irq, int, 0); | |
742 | MODULE_PARM_DESC(io, "SEEQ 8005 I/O base address"); | |
743 | MODULE_PARM_DESC(irq, "SEEQ 8005 IRQ number"); | |
744 | ||
745 | int init_module(void) | |
746 | { | |
747 | dev_seeq = seeq8005_probe(-1); | |
748 | if (IS_ERR(dev_seeq)) | |
749 | return PTR_ERR(dev_seeq); | |
750 | return 0; | |
751 | } | |
752 | ||
753 | void cleanup_module(void) | |
754 | { | |
755 | unregister_netdev(dev_seeq); | |
756 | release_region(dev_seeq->base_addr, SEEQ8005_IO_EXTENT); | |
757 | free_netdev(dev_seeq); | |
758 | } | |
759 | ||
760 | #endif /* MODULE */ | |
761 | \f | |
762 | /* | |
763 | * Local variables: | |
764 | * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c skeleton.c" | |
765 | * version-control: t | |
766 | * kept-new-versions: 5 | |
767 | * tab-width: 4 | |
768 | * End: | |
769 | */ |