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1da177e4 LT |
1 | /* ni5010.c: A network driver for the MiCom-Interlan NI5010 ethercard. |
2 | * | |
3 | * Copyright 1996,1997 Jan-Pascal van Best and Andreas Mohr. | |
4 | * | |
5 | * This software may be used and distributed according to the terms | |
6 | * of the GNU General Public License, incorporated herein by reference. | |
7 | * | |
8 | * The authors may be reached as: | |
9 | * jvbest@wi.leidenuniv.nl a.mohr@mailto.de | |
10 | * or by snail mail as | |
11 | * Jan-Pascal van Best Andreas Mohr | |
12 | * Klikspaanweg 58-4 Stauferstr. 6 | |
13 | * 2324 LZ Leiden D-71272 Renningen | |
14 | * The Netherlands Germany | |
15 | * | |
16 | * Sources: | |
17 | * Donald Becker's "skeleton.c" | |
18 | * Crynwr ni5010 packet driver | |
19 | * | |
20 | * Changes: | |
21 | * v0.0: First test version | |
22 | * v0.1: First working version | |
23 | * v0.2: | |
24 | * v0.3->v0.90: Now demand setting io and irq when loading as module | |
25 | * 970430 v0.91: modified for Linux 2.1.14 | |
26 | * v0.92: Implemented Andreas' (better) NI5010 probe | |
27 | * 970503 v0.93: Fixed auto-irq failure on warm reboot (JB) | |
28 | * 970623 v1.00: First kernel version (AM) | |
29 | * 970814 v1.01: Added detection of onboard receive buffer size (AM) | |
30 | * Bugs: | |
31 | * - None known... | |
32 | * - Note that you have to patch ifconfig for the new /proc/net/dev | |
33 | * format. It gives incorrect stats otherwise. | |
34 | * | |
35 | * To do: | |
36 | * Fix all bugs :-) | |
37 | * Move some stuff to chipset_init() | |
38 | * Handle xmt errors other than collisions | |
39 | * Complete merge with Andreas' driver | |
40 | * Implement ring buffers (Is this useful? You can't squeeze | |
41 | * too many packet in a 2k buffer!) | |
42 | * Implement DMA (Again, is this useful? Some docs says DMA is | |
43 | * slower than programmed I/O) | |
44 | * | |
45 | * Compile with: | |
46 | * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ \ | |
47 | * -DMODULE -c ni5010.c | |
48 | * | |
49 | * Insert with e.g.: | |
50 | * insmod ni5010.o io=0x300 irq=5 | |
51 | */ | |
52 | ||
53 | #include <linux/module.h> | |
54 | #include <linux/kernel.h> | |
55 | #include <linux/string.h> | |
56 | #include <linux/errno.h> | |
57 | #include <linux/ioport.h> | |
58 | #include <linux/slab.h> | |
59 | #include <linux/interrupt.h> | |
60 | #include <linux/delay.h> | |
61 | #include <linux/init.h> | |
62 | #include <linux/bitops.h> | |
63 | #include <asm/io.h> | |
64 | #include <asm/dma.h> | |
65 | ||
66 | #include <linux/netdevice.h> | |
67 | #include <linux/etherdevice.h> | |
68 | #include <linux/skbuff.h> | |
69 | ||
70 | #include "ni5010.h" | |
71 | ||
72 | static const char *boardname = "NI5010"; | |
73 | static char *version = | |
74 | "ni5010.c: v1.00 06/23/97 Jan-Pascal van Best and Andreas Mohr\n"; | |
75 | ||
76 | /* bufsize_rcv == 0 means autoprobing */ | |
77 | static unsigned int bufsize_rcv; | |
78 | ||
79 | #define jumpered_interrupts /* IRQ line jumpered on board */ | |
80 | #undef jumpered_dma /* No DMA used */ | |
81 | #undef FULL_IODETECT /* Only detect in portlist */ | |
82 | ||
83 | #ifndef FULL_IODETECT | |
84 | /* A zero-terminated list of I/O addresses to be probed. */ | |
85 | static unsigned int ports[] __initdata = | |
86 | { 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0 }; | |
87 | #endif | |
88 | ||
89 | /* Use 0 for production, 1 for verification, >2 for debug */ | |
90 | #ifndef NI5010_DEBUG | |
91 | #define NI5010_DEBUG 0 | |
92 | #endif | |
93 | ||
94 | /* Information that needs to be kept for each board. */ | |
95 | struct ni5010_local { | |
96 | struct net_device_stats stats; | |
97 | int o_pkt_size; | |
98 | spinlock_t lock; | |
99 | }; | |
100 | ||
101 | /* Index to functions, as function prototypes. */ | |
102 | ||
103 | static int ni5010_probe1(struct net_device *dev, int ioaddr); | |
104 | static int ni5010_open(struct net_device *dev); | |
105 | static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev); | |
106 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs); | |
107 | static void ni5010_rx(struct net_device *dev); | |
108 | static void ni5010_timeout(struct net_device *dev); | |
109 | static int ni5010_close(struct net_device *dev); | |
110 | static struct net_device_stats *ni5010_get_stats(struct net_device *dev); | |
111 | static void ni5010_set_multicast_list(struct net_device *dev); | |
112 | static void reset_receiver(struct net_device *dev); | |
113 | ||
114 | static int process_xmt_interrupt(struct net_device *dev); | |
115 | #define tx_done(dev) 1 | |
116 | static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad); | |
117 | static void chipset_init(struct net_device *dev, int startp); | |
118 | static void dump_packet(void *buf, int len); | |
119 | static void ni5010_show_registers(struct net_device *dev); | |
120 | ||
121 | static int io; | |
122 | static int irq; | |
123 | ||
124 | struct net_device * __init ni5010_probe(int unit) | |
125 | { | |
126 | struct net_device *dev = alloc_etherdev(sizeof(struct ni5010_local)); | |
127 | int *port; | |
128 | int err = 0; | |
129 | ||
130 | if (!dev) | |
131 | return ERR_PTR(-ENOMEM); | |
132 | ||
133 | if (unit >= 0) { | |
134 | sprintf(dev->name, "eth%d", unit); | |
135 | netdev_boot_setup_check(dev); | |
136 | io = dev->base_addr; | |
137 | irq = dev->irq; | |
138 | } | |
139 | ||
140 | PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name)); | |
141 | ||
142 | SET_MODULE_OWNER(dev); | |
143 | ||
144 | if (io > 0x1ff) { /* Check a single specified location. */ | |
145 | err = ni5010_probe1(dev, io); | |
146 | } else if (io != 0) { /* Don't probe at all. */ | |
147 | err = -ENXIO; | |
148 | } else { | |
149 | #ifdef FULL_IODETECT | |
150 | for (io=0x200; io<0x400 && ni5010_probe1(dev, io) ; io+=0x20) | |
151 | ; | |
152 | if (io == 0x400) | |
153 | err = -ENODEV; | |
154 | ||
155 | #else | |
156 | for (port = ports; *port && ni5010_probe1(dev, *port); port++) | |
157 | ; | |
158 | if (!*port) | |
159 | err = -ENODEV; | |
160 | #endif /* FULL_IODETECT */ | |
161 | } | |
162 | if (err) | |
163 | goto out; | |
164 | err = register_netdev(dev); | |
165 | if (err) | |
166 | goto out1; | |
167 | return dev; | |
168 | out1: | |
169 | release_region(dev->base_addr, NI5010_IO_EXTENT); | |
170 | out: | |
171 | free_netdev(dev); | |
172 | return ERR_PTR(err); | |
173 | } | |
174 | ||
175 | static inline int rd_port(int ioaddr) | |
176 | { | |
177 | inb(IE_RBUF); | |
178 | return inb(IE_SAPROM); | |
179 | } | |
180 | ||
181 | static void __init trigger_irq(int ioaddr) | |
182 | { | |
183 | outb(0x00, EDLC_RESET); /* Clear EDLC hold RESET state */ | |
184 | outb(0x00, IE_RESET); /* Board reset */ | |
185 | outb(0x00, EDLC_XMASK); /* Disable all Xmt interrupts */ | |
186 | outb(0x00, EDLC_RMASK); /* Disable all Rcv interrupt */ | |
187 | outb(0xff, EDLC_XCLR); /* Clear all pending Xmt interrupts */ | |
188 | outb(0xff, EDLC_RCLR); /* Clear all pending Rcv interrupts */ | |
189 | /* | |
190 | * Transmit packet mode: Ignore parity, Power xcvr, | |
191 | * Enable loopback | |
192 | */ | |
193 | outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); | |
194 | outb(RMD_BROADCAST, EDLC_RMODE); /* Receive normal&broadcast */ | |
195 | outb(XM_ALL, EDLC_XMASK); /* Enable all Xmt interrupts */ | |
196 | udelay(50); /* FIXME: Necessary? */ | |
197 | outb(MM_EN_XMT|MM_MUX, IE_MMODE); /* Start transmission */ | |
198 | } | |
199 | ||
200 | /* | |
201 | * This is the real probe routine. Linux has a history of friendly device | |
202 | * probes on the ISA bus. A good device probes avoids doing writes, and | |
203 | * verifies that the correct device exists and functions. | |
204 | */ | |
205 | ||
206 | static int __init ni5010_probe1(struct net_device *dev, int ioaddr) | |
207 | { | |
208 | static unsigned version_printed; | |
209 | struct ni5010_local *lp; | |
210 | int i; | |
211 | unsigned int data = 0; | |
212 | int boguscount = 40; | |
213 | int err = -ENODEV; | |
214 | ||
215 | dev->base_addr = ioaddr; | |
216 | dev->irq = irq; | |
217 | ||
218 | if (!request_region(ioaddr, NI5010_IO_EXTENT, boardname)) | |
219 | return -EBUSY; | |
220 | ||
221 | /* | |
222 | * This is no "official" probe method, I've rather tested which | |
223 | * probe works best with my seven NI5010 cards | |
224 | * (they have very different serial numbers) | |
225 | * Suggestions or failure reports are very, very welcome ! | |
226 | * But I think it is a relatively good probe method | |
227 | * since it doesn't use any "outb" | |
228 | * It should be nearly 100% reliable ! | |
229 | * well-known WARNING: this probe method (like many others) | |
230 | * will hang the system if a NE2000 card region is probed ! | |
231 | * | |
232 | * - Andreas | |
233 | */ | |
234 | ||
235 | PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n", | |
236 | dev->name, ioaddr)); | |
237 | ||
238 | if (inb(ioaddr+0) == 0xff) | |
239 | goto out; | |
240 | ||
241 | while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) & | |
242 | rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff) | |
243 | { | |
244 | if (boguscount-- == 0) | |
245 | goto out; | |
246 | } | |
247 | ||
248 | PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name)); | |
249 | ||
250 | for (i=0; i<32; i++) | |
251 | if ( (data = rd_port(ioaddr)) != 0xff) break; | |
252 | if (data==0xff) | |
253 | goto out; | |
254 | ||
255 | PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name)); | |
256 | ||
257 | if ((data != SA_ADDR0) || (rd_port(ioaddr) != SA_ADDR1) || | |
258 | (rd_port(ioaddr) != SA_ADDR2)) | |
259 | goto out; | |
260 | ||
261 | for (i=0; i<4; i++) | |
262 | rd_port(ioaddr); | |
263 | ||
264 | if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) || | |
265 | (rd_port(ioaddr) != NI5010_MAGICVAL2) ) | |
266 | goto out; | |
267 | ||
268 | PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name)); | |
269 | ||
270 | if (NI5010_DEBUG && version_printed++ == 0) | |
271 | printk(KERN_INFO "%s", version); | |
272 | ||
273 | printk("NI5010 ethercard probe at 0x%x: ", ioaddr); | |
274 | ||
275 | dev->base_addr = ioaddr; | |
276 | ||
277 | for (i=0; i<6; i++) { | |
278 | outw(i, IE_GP); | |
279 | printk("%2.2x ", dev->dev_addr[i] = inb(IE_SAPROM)); | |
280 | } | |
281 | ||
282 | PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name)); | |
283 | ||
284 | #ifdef jumpered_interrupts | |
285 | if (dev->irq == 0xff) | |
286 | ; | |
287 | else if (dev->irq < 2) { | |
288 | unsigned long irq_mask; | |
289 | ||
290 | PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name)); | |
291 | ||
292 | irq_mask = probe_irq_on(); | |
293 | trigger_irq(ioaddr); | |
294 | mdelay(20); | |
295 | dev->irq = probe_irq_off(irq_mask); | |
296 | ||
297 | PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name)); | |
298 | ||
299 | if (dev->irq == 0) { | |
300 | err = -EAGAIN; | |
301 | printk(KERN_WARNING "%s: no IRQ found!\n", dev->name); | |
302 | goto out; | |
303 | } | |
304 | PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name)); | |
305 | } else if (dev->irq == 2) { | |
306 | dev->irq = 9; | |
307 | } | |
308 | #endif /* jumpered_irq */ | |
309 | PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name)); | |
310 | ||
311 | /* DMA is not supported (yet?), so no use detecting it */ | |
312 | lp = netdev_priv(dev); | |
313 | ||
314 | spin_lock_init(&lp->lock); | |
315 | ||
316 | PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name)); | |
317 | ||
318 | /* get the size of the onboard receive buffer | |
319 | * higher addresses than bufsize are wrapped into real buffer | |
320 | * i.e. data for offs. 0x801 is written to 0x1 with a 2K onboard buffer | |
321 | */ | |
322 | if (!bufsize_rcv) { | |
323 | outb(1, IE_MMODE); /* Put Rcv buffer on system bus */ | |
324 | outw(0, IE_GP); /* Point GP at start of packet */ | |
325 | outb(0, IE_RBUF); /* set buffer byte 0 to 0 */ | |
326 | for (i = 1; i < 0xff; i++) { | |
327 | outw(i << 8, IE_GP); /* Point GP at packet size to be tested */ | |
328 | outb(i, IE_RBUF); | |
329 | outw(0x0, IE_GP); /* Point GP at start of packet */ | |
330 | data = inb(IE_RBUF); | |
331 | if (data == i) break; | |
332 | } | |
333 | bufsize_rcv = i << 8; | |
334 | outw(0, IE_GP); /* Point GP at start of packet */ | |
335 | outb(0, IE_RBUF); /* set buffer byte 0 to 0 again */ | |
336 | } | |
337 | printk("// bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE); | |
338 | memset(dev->priv, 0, sizeof(struct ni5010_local)); | |
339 | ||
340 | dev->open = ni5010_open; | |
341 | dev->stop = ni5010_close; | |
342 | dev->hard_start_xmit = ni5010_send_packet; | |
343 | dev->get_stats = ni5010_get_stats; | |
344 | dev->set_multicast_list = ni5010_set_multicast_list; | |
345 | dev->tx_timeout = ni5010_timeout; | |
346 | dev->watchdog_timeo = HZ/20; | |
347 | ||
348 | dev->flags &= ~IFF_MULTICAST; /* Multicast doesn't work */ | |
349 | ||
350 | /* Shut up the ni5010 */ | |
351 | outb(0, EDLC_RMASK); /* Mask all receive interrupts */ | |
352 | outb(0, EDLC_XMASK); /* Mask all xmit interrupts */ | |
353 | outb(0xff, EDLC_RCLR); /* Kill all pending rcv interrupts */ | |
354 | outb(0xff, EDLC_XCLR); /* Kill all pending xmt interrupts */ | |
355 | ||
356 | printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq); | |
357 | if (dev->dma) printk(" & DMA %d", dev->dma); | |
358 | printk(".\n"); | |
359 | ||
360 | printk(KERN_INFO "Join the NI5010 driver development team!\n"); | |
361 | printk(KERN_INFO "Mail to a.mohr@mailto.de or jvbest@wi.leidenuniv.nl\n"); | |
362 | return 0; | |
363 | out: | |
364 | release_region(dev->base_addr, NI5010_IO_EXTENT); | |
365 | return err; | |
366 | } | |
367 | ||
368 | /* | |
369 | * Open/initialize the board. This is called (in the current kernel) | |
370 | * sometime after booting when the 'ifconfig' program is run. | |
371 | * | |
372 | * This routine should set everything up anew at each open, even | |
373 | * registers that "should" only need to be set once at boot, so that | |
374 | * there is non-reboot way to recover if something goes wrong. | |
375 | */ | |
376 | ||
377 | static int ni5010_open(struct net_device *dev) | |
378 | { | |
379 | int ioaddr = dev->base_addr; | |
380 | int i; | |
381 | ||
382 | PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name)); | |
383 | ||
384 | if (request_irq(dev->irq, &ni5010_interrupt, 0, boardname, dev)) { | |
385 | printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq); | |
386 | return -EAGAIN; | |
387 | } | |
388 | PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name)); | |
389 | /* | |
390 | * Always allocate the DMA channel after the IRQ, | |
391 | * and clean up on failure. | |
392 | */ | |
393 | #ifdef jumpered_dma | |
394 | if (request_dma(dev->dma, cardname)) { | |
395 | printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma); | |
396 | free_irq(dev->irq, NULL); | |
397 | return -EAGAIN; | |
398 | } | |
399 | #endif /* jumpered_dma */ | |
400 | ||
401 | PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name)); | |
402 | /* Reset the hardware here. Don't forget to set the station address. */ | |
403 | ||
404 | outb(RS_RESET, EDLC_RESET); /* Hold up EDLC_RESET while configing board */ | |
405 | outb(0, IE_RESET); /* Hardware reset of ni5010 board */ | |
406 | outb(XMD_LBC, EDLC_XMODE); /* Only loopback xmits */ | |
407 | ||
408 | PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name)); | |
409 | /* Set the station address */ | |
410 | for(i = 0;i < 6; i++) { | |
411 | outb(dev->dev_addr[i], EDLC_ADDR + i); | |
412 | } | |
413 | ||
414 | PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name)); | |
415 | outb(0, EDLC_XMASK); /* No xmit interrupts for now */ | |
416 | outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); | |
417 | /* Normal packet xmit mode */ | |
418 | outb(0xff, EDLC_XCLR); /* Clear all pending xmit interrupts */ | |
419 | outb(RMD_BROADCAST, EDLC_RMODE); | |
420 | /* Receive broadcast and normal packets */ | |
421 | reset_receiver(dev); /* Ready ni5010 for receiving packets */ | |
422 | ||
423 | outb(0, EDLC_RESET); /* Un-reset the ni5010 */ | |
424 | ||
425 | netif_start_queue(dev); | |
426 | ||
427 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
428 | ||
429 | PRINTK((KERN_DEBUG "%s: open successful\n", dev->name)); | |
430 | return 0; | |
431 | } | |
432 | ||
433 | static void reset_receiver(struct net_device *dev) | |
434 | { | |
435 | int ioaddr = dev->base_addr; | |
436 | ||
437 | PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name)); | |
438 | outw(0, IE_GP); /* Receive packet at start of buffer */ | |
439 | outb(0xff, EDLC_RCLR); /* Clear all pending rcv interrupts */ | |
440 | outb(0, IE_MMODE); /* Put EDLC to rcv buffer */ | |
441 | outb(MM_EN_RCV, IE_MMODE); /* Enable rcv */ | |
442 | outb(0xff, EDLC_RMASK); /* Enable all rcv interrupts */ | |
443 | } | |
444 | ||
445 | static void ni5010_timeout(struct net_device *dev) | |
446 | { | |
447 | printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, | |
448 | tx_done(dev) ? "IRQ conflict" : "network cable problem"); | |
449 | /* Try to restart the adaptor. */ | |
450 | /* FIXME: Give it a real kick here */ | |
451 | chipset_init(dev, 1); | |
452 | dev->trans_start = jiffies; | |
453 | netif_wake_queue(dev); | |
454 | } | |
455 | ||
456 | static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev) | |
457 | { | |
458 | int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; | |
459 | ||
460 | PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name)); | |
461 | ||
462 | /* | |
463 | * Block sending | |
464 | */ | |
465 | ||
466 | netif_stop_queue(dev); | |
467 | hardware_send_packet(dev, (unsigned char *)skb->data, skb->len, length-skb->len); | |
468 | dev->trans_start = jiffies; | |
469 | dev_kfree_skb (skb); | |
470 | return 0; | |
471 | } | |
472 | ||
473 | /* | |
474 | * The typical workload of the driver: | |
475 | * Handle the network interface interrupts. | |
476 | */ | |
477 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
478 | { | |
479 | struct net_device *dev = dev_id; | |
480 | struct ni5010_local *lp; | |
481 | int ioaddr, status; | |
482 | int xmit_was_error = 0; | |
483 | ||
484 | PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name)); | |
485 | ||
486 | ioaddr = dev->base_addr; | |
487 | lp = netdev_priv(dev); | |
488 | ||
489 | spin_lock(&lp->lock); | |
490 | status = inb(IE_ISTAT); | |
491 | PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status)); | |
492 | ||
493 | if ((status & IS_R_INT) == 0) ni5010_rx(dev); | |
494 | ||
495 | if ((status & IS_X_INT) == 0) { | |
496 | xmit_was_error = process_xmt_interrupt(dev); | |
497 | } | |
498 | ||
499 | if ((status & IS_DMA_INT) == 0) { | |
500 | PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name)); | |
501 | outb(0, IE_DMA_RST); /* Reset DMA int */ | |
502 | } | |
503 | ||
504 | if (!xmit_was_error) | |
505 | reset_receiver(dev); | |
506 | spin_unlock(&lp->lock); | |
507 | return IRQ_HANDLED; | |
508 | } | |
509 | ||
510 | ||
511 | static void dump_packet(void *buf, int len) | |
512 | { | |
513 | int i; | |
514 | ||
515 | printk(KERN_DEBUG "Packet length = %#4x\n", len); | |
516 | for (i = 0; i < len; i++){ | |
517 | if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i); | |
518 | if (i % 2 == 0) printk(" "); | |
519 | printk("%2.2x", ((unsigned char *)buf)[i]); | |
520 | if (i % 16 == 15) printk("\n"); | |
521 | } | |
522 | printk("\n"); | |
523 | ||
524 | return; | |
525 | } | |
526 | ||
527 | /* We have a good packet, get it out of the buffer. */ | |
528 | static void ni5010_rx(struct net_device *dev) | |
529 | { | |
530 | struct ni5010_local *lp = netdev_priv(dev); | |
531 | int ioaddr = dev->base_addr; | |
532 | unsigned char rcv_stat; | |
533 | struct sk_buff *skb; | |
534 | int i_pkt_size; | |
535 | ||
536 | PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name)); | |
537 | ||
538 | rcv_stat = inb(EDLC_RSTAT); | |
539 | PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat)); | |
540 | ||
541 | if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) { | |
542 | PRINTK((KERN_INFO "%s: receive error.\n", dev->name)); | |
543 | lp->stats.rx_errors++; | |
544 | if (rcv_stat & RS_RUNT) lp->stats.rx_length_errors++; | |
545 | if (rcv_stat & RS_ALIGN) lp->stats.rx_frame_errors++; | |
546 | if (rcv_stat & RS_CRC_ERR) lp->stats.rx_crc_errors++; | |
547 | if (rcv_stat & RS_OFLW) lp->stats.rx_fifo_errors++; | |
548 | outb(0xff, EDLC_RCLR); /* Clear the interrupt */ | |
549 | return; | |
550 | } | |
551 | ||
552 | outb(0xff, EDLC_RCLR); /* Clear the interrupt */ | |
553 | ||
554 | i_pkt_size = inw(IE_RCNT); | |
555 | if (i_pkt_size > ETH_FRAME_LEN || i_pkt_size < 10 ) { | |
556 | PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n", | |
557 | dev->name, i_pkt_size)); | |
558 | lp->stats.rx_errors++; | |
559 | lp->stats.rx_length_errors++; | |
560 | return; | |
561 | } | |
562 | ||
563 | /* Malloc up new buffer. */ | |
564 | skb = dev_alloc_skb(i_pkt_size + 3); | |
565 | if (skb == NULL) { | |
566 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name); | |
567 | lp->stats.rx_dropped++; | |
568 | return; | |
569 | } | |
570 | ||
571 | skb->dev = dev; | |
572 | skb_reserve(skb, 2); | |
573 | ||
574 | /* Read packet into buffer */ | |
575 | outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */ | |
576 | outw(0, IE_GP); /* Seek to beginning of packet */ | |
577 | insb(IE_RBUF, skb_put(skb, i_pkt_size), i_pkt_size); | |
578 | ||
579 | if (NI5010_DEBUG >= 4) | |
580 | dump_packet(skb->data, skb->len); | |
581 | ||
582 | skb->protocol = eth_type_trans(skb,dev); | |
583 | netif_rx(skb); | |
584 | dev->last_rx = jiffies; | |
585 | lp->stats.rx_packets++; | |
586 | lp->stats.rx_bytes += i_pkt_size; | |
587 | ||
588 | PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n", | |
589 | dev->name, i_pkt_size)); | |
590 | ||
591 | } | |
592 | ||
593 | static int process_xmt_interrupt(struct net_device *dev) | |
594 | { | |
595 | struct ni5010_local *lp = netdev_priv(dev); | |
596 | int ioaddr = dev->base_addr; | |
597 | int xmit_stat; | |
598 | ||
599 | PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name)); | |
600 | ||
601 | xmit_stat = inb(EDLC_XSTAT); | |
602 | PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat)); | |
603 | ||
604 | outb(0, EDLC_XMASK); /* Disable xmit IRQ's */ | |
605 | outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */ | |
606 | ||
607 | if (xmit_stat & XS_COLL){ | |
608 | PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n", | |
609 | dev->name)); | |
610 | outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP); | |
611 | /* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */ | |
612 | outb(MM_EN_XMT | MM_MUX, IE_MMODE); | |
613 | outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */ | |
614 | lp->stats.collisions++; | |
615 | return 1; | |
616 | } | |
617 | ||
618 | /* FIXME: handle other xmt error conditions */ | |
619 | ||
620 | lp->stats.tx_packets++; | |
621 | lp->stats.tx_bytes += lp->o_pkt_size; | |
622 | netif_wake_queue(dev); | |
623 | ||
624 | PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n", | |
625 | dev->name, lp->o_pkt_size)); | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | /* The inverse routine to ni5010_open(). */ | |
631 | static int ni5010_close(struct net_device *dev) | |
632 | { | |
633 | int ioaddr = dev->base_addr; | |
634 | ||
635 | PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name)); | |
636 | #ifdef jumpered_interrupts | |
637 | free_irq(dev->irq, NULL); | |
638 | #endif | |
639 | /* Put card in held-RESET state */ | |
640 | outb(0, IE_MMODE); | |
641 | outb(RS_RESET, EDLC_RESET); | |
642 | ||
643 | netif_stop_queue(dev); | |
644 | ||
645 | PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname)); | |
646 | return 0; | |
647 | ||
648 | } | |
649 | ||
650 | /* Get the current statistics. This may be called with the card open or | |
651 | closed. */ | |
652 | static struct net_device_stats *ni5010_get_stats(struct net_device *dev) | |
653 | { | |
654 | struct ni5010_local *lp = netdev_priv(dev); | |
655 | ||
656 | PRINTK2((KERN_DEBUG "%s: entering ni5010_get_stats\n", dev->name)); | |
657 | ||
658 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
659 | ||
660 | /* cli(); */ | |
661 | /* Update the statistics from the device registers. */ | |
662 | /* We do this in the interrupt handler */ | |
663 | /* sti(); */ | |
664 | ||
665 | return &lp->stats; | |
666 | } | |
667 | ||
668 | /* Set or clear the multicast filter for this adaptor. | |
669 | num_addrs == -1 Promiscuous mode, receive all packets | |
670 | num_addrs == 0 Normal mode, clear multicast list | |
671 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do | |
672 | best-effort filtering. | |
673 | */ | |
674 | static void ni5010_set_multicast_list(struct net_device *dev) | |
675 | { | |
676 | short ioaddr = dev->base_addr; | |
677 | ||
678 | PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name)); | |
679 | ||
680 | if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI) { | |
681 | dev->flags |= IFF_PROMISC; | |
682 | outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */ | |
683 | PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name)); | |
684 | } else if (dev->mc_list) { | |
685 | /* Sorry, multicast not supported */ | |
686 | PRINTK((KERN_DEBUG "%s: No multicast, entering broadcast mode\n", dev->name)); | |
687 | outb(RMD_BROADCAST, EDLC_RMODE); | |
688 | } else { | |
689 | PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name)); | |
690 | outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */ | |
691 | } | |
692 | } | |
693 | ||
694 | static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad) | |
695 | { | |
696 | struct ni5010_local *lp = netdev_priv(dev); | |
697 | int ioaddr = dev->base_addr; | |
698 | unsigned long flags; | |
699 | unsigned int buf_offs; | |
700 | ||
701 | PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name)); | |
702 | ||
703 | if (length > ETH_FRAME_LEN) { | |
704 | PRINTK((KERN_WARNING "%s: packet too large, not possible\n", | |
705 | dev->name)); | |
706 | return; | |
707 | } | |
708 | ||
709 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
710 | ||
711 | if (inb(IE_ISTAT) & IS_EN_XMT) { | |
712 | PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n", | |
713 | dev->name)); | |
714 | return; | |
715 | } | |
716 | ||
717 | if (NI5010_DEBUG > 3) dump_packet(buf, length); | |
718 | ||
719 | buf_offs = NI5010_BUFSIZE - length - pad; | |
720 | ||
721 | spin_lock_irqsave(&lp->lock, flags); | |
722 | lp->o_pkt_size = length + pad; | |
723 | ||
724 | outb(0, EDLC_RMASK); /* Mask all receive interrupts */ | |
725 | outb(0, IE_MMODE); /* Put Xmit buffer on system bus */ | |
726 | outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */ | |
727 | ||
728 | outw(buf_offs, IE_GP); /* Point GP at start of packet */ | |
729 | outsb(IE_XBUF, buf, length); /* Put data in buffer */ | |
730 | while(pad--) | |
731 | outb(0, IE_XBUF); | |
732 | ||
733 | outw(buf_offs, IE_GP); /* Rewrite where packet starts */ | |
734 | ||
735 | /* should work without that outb() (Crynwr used it) */ | |
736 | /*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */ | |
737 | outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */ | |
738 | outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */ | |
739 | ||
740 | spin_unlock_irqrestore(&lp->lock, flags); | |
741 | ||
742 | netif_wake_queue(dev); | |
743 | ||
744 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
745 | } | |
746 | ||
747 | static void chipset_init(struct net_device *dev, int startp) | |
748 | { | |
749 | /* FIXME: Move some stuff here */ | |
750 | PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name)); | |
751 | } | |
752 | ||
753 | static void ni5010_show_registers(struct net_device *dev) | |
754 | { | |
755 | int ioaddr = dev->base_addr; | |
756 | ||
757 | PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT))); | |
758 | PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK))); | |
759 | PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT))); | |
760 | PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK))); | |
761 | PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE))); | |
762 | PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE))); | |
763 | PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT))); | |
764 | } | |
765 | ||
766 | #ifdef MODULE | |
767 | static struct net_device *dev_ni5010; | |
768 | ||
769 | MODULE_PARM(io, "i"); | |
770 | MODULE_PARM(irq, "i"); | |
771 | MODULE_PARM_DESC(io, "ni5010 I/O base address"); | |
772 | MODULE_PARM_DESC(irq, "ni5010 IRQ number"); | |
773 | ||
774 | int init_module(void) | |
775 | { | |
776 | PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname)); | |
777 | /* | |
778 | if(io <= 0 || irq == 0){ | |
779 | printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname); | |
780 | printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname); | |
781 | return -EINVAL; | |
782 | } | |
783 | */ | |
784 | if (io <= 0){ | |
785 | printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname); | |
786 | } | |
787 | ||
788 | PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io)); | |
789 | dev_ni5010 = ni5010_probe(-1); | |
790 | if (IS_ERR(dev_ni5010)) | |
791 | return PTR_ERR(dev_ni5010); | |
792 | return 0; | |
793 | } | |
794 | ||
795 | void cleanup_module(void) | |
796 | { | |
797 | PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname)); | |
798 | unregister_netdev(dev_ni5010); | |
799 | release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT); | |
800 | free_netdev(dev_ni5010); | |
801 | } | |
802 | #endif /* MODULE */ | |
803 | MODULE_LICENSE("GPL"); | |
804 | ||
805 | /* | |
806 | * Local variables: | |
807 | * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ni5010.c" | |
808 | * version-control: t | |
809 | * kept-new-versions: 5 | |
810 | * tab-width: 4 | |
811 | * End: | |
812 | */ |