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1 | /* ni5010.c: A network driver for the MiCom-Interlan NI5010 ethercard. | |
2 | * | |
3 | * Copyright 1996,1997,2006 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 | * janpascal@vanbest.org andi@lisas.de | |
10 | * | |
11 | * Sources: | |
12 | * Donald Becker's "skeleton.c" | |
13 | * Crynwr ni5010 packet driver | |
14 | * | |
15 | * Changes: | |
16 | * v0.0: First test version | |
17 | * v0.1: First working version | |
18 | * v0.2: | |
19 | * v0.3->v0.90: Now demand setting io and irq when loading as module | |
20 | * 970430 v0.91: modified for Linux 2.1.14 | |
21 | * v0.92: Implemented Andreas' (better) NI5010 probe | |
22 | * 970503 v0.93: Fixed auto-irq failure on warm reboot (JB) | |
23 | * 970623 v1.00: First kernel version (AM) | |
24 | * 970814 v1.01: Added detection of onboard receive buffer size (AM) | |
25 | * 060611 v1.02: slight cleanup: email addresses, driver modernization. | |
26 | * Bugs: | |
27 | * - not SMP-safe (no locking of I/O accesses) | |
28 | * - Note that you have to patch ifconfig for the new /proc/net/dev | |
29 | * format. It gives incorrect stats otherwise. | |
30 | * | |
31 | * To do: | |
32 | * Fix all bugs :-) | |
33 | * Move some stuff to chipset_init() | |
34 | * Handle xmt errors other than collisions | |
35 | * Complete merge with Andreas' driver | |
36 | * Implement ring buffers (Is this useful? You can't squeeze | |
37 | * too many packet in a 2k buffer!) | |
38 | * Implement DMA (Again, is this useful? Some docs say DMA is | |
39 | * slower than programmed I/O) | |
40 | * | |
41 | * Compile with: | |
42 | * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ \ | |
43 | * -DMODULE -c ni5010.c | |
44 | * | |
45 | * Insert with e.g.: | |
46 | * insmod ni5010.ko io=0x300 irq=5 | |
47 | */ | |
48 | ||
49 | #include <linux/module.h> | |
50 | #include <linux/kernel.h> | |
51 | #include <linux/string.h> | |
52 | #include <linux/errno.h> | |
53 | #include <linux/ioport.h> | |
54 | #include <linux/interrupt.h> | |
55 | #include <linux/delay.h> | |
56 | #include <linux/init.h> | |
57 | #include <linux/bitops.h> | |
58 | #include <asm/io.h> | |
59 | #include <asm/dma.h> | |
60 | ||
61 | #include <linux/netdevice.h> | |
62 | #include <linux/etherdevice.h> | |
63 | #include <linux/skbuff.h> | |
64 | ||
65 | #include "ni5010.h" | |
66 | ||
67 | static const char boardname[] = "NI5010"; | |
68 | static char version[] __initdata = | |
69 | "ni5010.c: v1.02 20060611 Jan-Pascal van Best and Andreas Mohr\n"; | |
70 | ||
71 | /* bufsize_rcv == 0 means autoprobing */ | |
72 | static unsigned int bufsize_rcv; | |
73 | ||
74 | #define JUMPERED_INTERRUPTS /* IRQ line jumpered on board */ | |
75 | #undef JUMPERED_DMA /* No DMA used */ | |
76 | #undef FULL_IODETECT /* Only detect in portlist */ | |
77 | ||
78 | #ifndef FULL_IODETECT | |
79 | /* A zero-terminated list of I/O addresses to be probed. */ | |
80 | static unsigned int ports[] __initdata = | |
81 | { 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0 }; | |
82 | #endif | |
83 | ||
84 | /* Use 0 for production, 1 for verification, >2 for debug */ | |
85 | #ifndef NI5010_DEBUG | |
86 | #define NI5010_DEBUG 0 | |
87 | #endif | |
88 | ||
89 | /* Information that needs to be kept for each board. */ | |
90 | struct ni5010_local { | |
91 | int o_pkt_size; | |
92 | spinlock_t lock; | |
93 | }; | |
94 | ||
95 | /* Index to functions, as function prototypes. */ | |
96 | ||
97 | static int ni5010_probe1(struct net_device *dev, int ioaddr); | |
98 | static int ni5010_open(struct net_device *dev); | |
99 | static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev); | |
100 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id); | |
101 | static void ni5010_rx(struct net_device *dev); | |
102 | static void ni5010_timeout(struct net_device *dev); | |
103 | static int ni5010_close(struct net_device *dev); | |
104 | static void ni5010_set_multicast_list(struct net_device *dev); | |
105 | static void reset_receiver(struct net_device *dev); | |
106 | ||
107 | static int process_xmt_interrupt(struct net_device *dev); | |
108 | #define tx_done(dev) 1 | |
109 | static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad); | |
110 | static void chipset_init(struct net_device *dev, int startp); | |
111 | static void dump_packet(void *buf, int len); | |
112 | static void ni5010_show_registers(struct net_device *dev); | |
113 | ||
114 | static int io; | |
115 | static int irq; | |
116 | ||
117 | struct net_device * __init ni5010_probe(int unit) | |
118 | { | |
119 | struct net_device *dev = alloc_etherdev(sizeof(struct ni5010_local)); | |
120 | int *port; | |
121 | int err = 0; | |
122 | ||
123 | if (!dev) | |
124 | return ERR_PTR(-ENOMEM); | |
125 | ||
126 | if (unit >= 0) { | |
127 | sprintf(dev->name, "eth%d", unit); | |
128 | netdev_boot_setup_check(dev); | |
129 | io = dev->base_addr; | |
130 | irq = dev->irq; | |
131 | } | |
132 | ||
133 | PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name)); | |
134 | ||
135 | if (io > 0x1ff) { /* Check a single specified location. */ | |
136 | err = ni5010_probe1(dev, io); | |
137 | } else if (io != 0) { /* Don't probe at all. */ | |
138 | err = -ENXIO; | |
139 | } else { | |
140 | #ifdef FULL_IODETECT | |
141 | for (io=0x200; io<0x400 && ni5010_probe1(dev, io) ; io+=0x20) | |
142 | ; | |
143 | if (io == 0x400) | |
144 | err = -ENODEV; | |
145 | ||
146 | #else | |
147 | for (port = ports; *port && ni5010_probe1(dev, *port); port++) | |
148 | ; | |
149 | if (!*port) | |
150 | err = -ENODEV; | |
151 | #endif /* FULL_IODETECT */ | |
152 | } | |
153 | if (err) | |
154 | goto out; | |
155 | err = register_netdev(dev); | |
156 | if (err) | |
157 | goto out1; | |
158 | return dev; | |
159 | out1: | |
160 | release_region(dev->base_addr, NI5010_IO_EXTENT); | |
161 | out: | |
162 | free_netdev(dev); | |
163 | return ERR_PTR(err); | |
164 | } | |
165 | ||
166 | static inline int rd_port(int ioaddr) | |
167 | { | |
168 | inb(IE_RBUF); | |
169 | return inb(IE_SAPROM); | |
170 | } | |
171 | ||
172 | static void __init trigger_irq(int ioaddr) | |
173 | { | |
174 | outb(0x00, EDLC_RESET); /* Clear EDLC hold RESET state */ | |
175 | outb(0x00, IE_RESET); /* Board reset */ | |
176 | outb(0x00, EDLC_XMASK); /* Disable all Xmt interrupts */ | |
177 | outb(0x00, EDLC_RMASK); /* Disable all Rcv interrupt */ | |
178 | outb(0xff, EDLC_XCLR); /* Clear all pending Xmt interrupts */ | |
179 | outb(0xff, EDLC_RCLR); /* Clear all pending Rcv interrupts */ | |
180 | /* | |
181 | * Transmit packet mode: Ignore parity, Power xcvr, | |
182 | * Enable loopback | |
183 | */ | |
184 | outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); | |
185 | outb(RMD_BROADCAST, EDLC_RMODE); /* Receive normal&broadcast */ | |
186 | outb(XM_ALL, EDLC_XMASK); /* Enable all Xmt interrupts */ | |
187 | udelay(50); /* FIXME: Necessary? */ | |
188 | outb(MM_EN_XMT|MM_MUX, IE_MMODE); /* Start transmission */ | |
189 | } | |
190 | ||
191 | static const struct net_device_ops ni5010_netdev_ops = { | |
192 | .ndo_open = ni5010_open, | |
193 | .ndo_stop = ni5010_close, | |
194 | .ndo_start_xmit = ni5010_send_packet, | |
195 | .ndo_set_multicast_list = ni5010_set_multicast_list, | |
196 | .ndo_tx_timeout = ni5010_timeout, | |
197 | .ndo_validate_addr = eth_validate_addr, | |
198 | .ndo_set_mac_address = eth_mac_addr, | |
199 | .ndo_change_mtu = eth_change_mtu, | |
200 | }; | |
201 | ||
202 | /* | |
203 | * This is the real probe routine. Linux has a history of friendly device | |
204 | * probes on the ISA bus. A good device probes avoids doing writes, and | |
205 | * verifies that the correct device exists and functions. | |
206 | */ | |
207 | ||
208 | static int __init ni5010_probe1(struct net_device *dev, int ioaddr) | |
209 | { | |
210 | static unsigned version_printed; | |
211 | struct ni5010_local *lp; | |
212 | int i; | |
213 | unsigned int data = 0; | |
214 | int boguscount = 40; | |
215 | int err = -ENODEV; | |
216 | ||
217 | dev->base_addr = ioaddr; | |
218 | dev->irq = irq; | |
219 | ||
220 | if (!request_region(ioaddr, NI5010_IO_EXTENT, boardname)) | |
221 | return -EBUSY; | |
222 | ||
223 | /* | |
224 | * This is no "official" probe method, I've rather tested which | |
225 | * probe works best with my seven NI5010 cards | |
226 | * (they have very different serial numbers) | |
227 | * Suggestions or failure reports are very, very welcome ! | |
228 | * But I think it is a relatively good probe method | |
229 | * since it doesn't use any "outb" | |
230 | * It should be nearly 100% reliable ! | |
231 | * well-known WARNING: this probe method (like many others) | |
232 | * will hang the system if a NE2000 card region is probed ! | |
233 | * | |
234 | * - Andreas | |
235 | */ | |
236 | ||
237 | PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n", | |
238 | dev->name, ioaddr)); | |
239 | ||
240 | if (inb(ioaddr+0) == 0xff) | |
241 | goto out; | |
242 | ||
243 | while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) & | |
244 | rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff) | |
245 | { | |
246 | if (boguscount-- == 0) | |
247 | goto out; | |
248 | } | |
249 | ||
250 | PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name)); | |
251 | ||
252 | for (i=0; i<32; i++) | |
253 | if ( (data = rd_port(ioaddr)) != 0xff) break; | |
254 | if (data==0xff) | |
255 | goto out; | |
256 | ||
257 | PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name)); | |
258 | ||
259 | if ((data != SA_ADDR0) || (rd_port(ioaddr) != SA_ADDR1) || | |
260 | (rd_port(ioaddr) != SA_ADDR2)) | |
261 | goto out; | |
262 | ||
263 | for (i=0; i<4; i++) | |
264 | rd_port(ioaddr); | |
265 | ||
266 | if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) || | |
267 | (rd_port(ioaddr) != NI5010_MAGICVAL2) ) | |
268 | goto out; | |
269 | ||
270 | PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name)); | |
271 | ||
272 | if (NI5010_DEBUG && version_printed++ == 0) | |
273 | printk(KERN_INFO "%s", version); | |
274 | ||
275 | printk("NI5010 ethercard probe at 0x%x: ", ioaddr); | |
276 | ||
277 | dev->base_addr = ioaddr; | |
278 | ||
279 | for (i=0; i<6; i++) { | |
280 | outw(i, IE_GP); | |
281 | dev->dev_addr[i] = inb(IE_SAPROM); | |
282 | } | |
283 | printk("%pM ", dev->dev_addr); | |
284 | ||
285 | PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name)); | |
286 | ||
287 | #ifdef JUMPERED_INTERRUPTS | |
288 | if (dev->irq == 0xff) | |
289 | ; | |
290 | else if (dev->irq < 2) { | |
291 | unsigned long irq_mask; | |
292 | ||
293 | PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name)); | |
294 | ||
295 | irq_mask = probe_irq_on(); | |
296 | trigger_irq(ioaddr); | |
297 | mdelay(20); | |
298 | dev->irq = probe_irq_off(irq_mask); | |
299 | ||
300 | PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name)); | |
301 | ||
302 | if (dev->irq == 0) { | |
303 | err = -EAGAIN; | |
304 | printk(KERN_WARNING "%s: no IRQ found!\n", dev->name); | |
305 | goto out; | |
306 | } | |
307 | PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name)); | |
308 | } else if (dev->irq == 2) { | |
309 | dev->irq = 9; | |
310 | } | |
311 | #endif /* JUMPERED_INTERRUPTS */ | |
312 | PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name)); | |
313 | ||
314 | /* DMA is not supported (yet?), so no use detecting it */ | |
315 | lp = netdev_priv(dev); | |
316 | ||
317 | spin_lock_init(&lp->lock); | |
318 | ||
319 | PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name)); | |
320 | ||
321 | /* get the size of the onboard receive buffer | |
322 | * higher addresses than bufsize are wrapped into real buffer | |
323 | * i.e. data for offs. 0x801 is written to 0x1 with a 2K onboard buffer | |
324 | */ | |
325 | if (!bufsize_rcv) { | |
326 | outb(1, IE_MMODE); /* Put Rcv buffer on system bus */ | |
327 | outw(0, IE_GP); /* Point GP at start of packet */ | |
328 | outb(0, IE_RBUF); /* set buffer byte 0 to 0 */ | |
329 | for (i = 1; i < 0xff; i++) { | |
330 | outw(i << 8, IE_GP); /* Point GP at packet size to be tested */ | |
331 | outb(i, IE_RBUF); | |
332 | outw(0x0, IE_GP); /* Point GP at start of packet */ | |
333 | data = inb(IE_RBUF); | |
334 | if (data == i) break; | |
335 | } | |
336 | bufsize_rcv = i << 8; | |
337 | outw(0, IE_GP); /* Point GP at start of packet */ | |
338 | outb(0, IE_RBUF); /* set buffer byte 0 to 0 again */ | |
339 | } | |
340 | printk("-> bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE); | |
341 | ||
342 | dev->netdev_ops = &ni5010_netdev_ops; | |
343 | dev->watchdog_timeo = HZ/20; | |
344 | ||
345 | dev->flags &= ~IFF_MULTICAST; /* Multicast doesn't work */ | |
346 | ||
347 | /* Shut up the ni5010 */ | |
348 | outb(0, EDLC_RMASK); /* Mask all receive interrupts */ | |
349 | outb(0, EDLC_XMASK); /* Mask all xmit interrupts */ | |
350 | outb(0xff, EDLC_RCLR); /* Kill all pending rcv interrupts */ | |
351 | outb(0xff, EDLC_XCLR); /* Kill all pending xmt interrupts */ | |
352 | ||
353 | printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq); | |
354 | if (dev->dma) | |
355 | printk(" & DMA %d", dev->dma); | |
356 | printk(".\n"); | |
357 | return 0; | |
358 | out: | |
359 | release_region(dev->base_addr, NI5010_IO_EXTENT); | |
360 | return err; | |
361 | } | |
362 | ||
363 | /* | |
364 | * Open/initialize the board. This is called (in the current kernel) | |
365 | * sometime after booting when the 'ifconfig' program is run. | |
366 | * | |
367 | * This routine should set everything up anew at each open, even | |
368 | * registers that "should" only need to be set once at boot, so that | |
369 | * there is a non-reboot way to recover if something goes wrong. | |
370 | */ | |
371 | ||
372 | static int ni5010_open(struct net_device *dev) | |
373 | { | |
374 | int ioaddr = dev->base_addr; | |
375 | int i; | |
376 | ||
377 | PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name)); | |
378 | ||
379 | if (request_irq(dev->irq, ni5010_interrupt, 0, boardname, dev)) { | |
380 | printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq); | |
381 | return -EAGAIN; | |
382 | } | |
383 | PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name)); | |
384 | /* | |
385 | * Always allocate the DMA channel after the IRQ, | |
386 | * and clean up on failure. | |
387 | */ | |
388 | #ifdef JUMPERED_DMA | |
389 | if (request_dma(dev->dma, cardname)) { | |
390 | printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma); | |
391 | free_irq(dev->irq, NULL); | |
392 | return -EAGAIN; | |
393 | } | |
394 | #endif /* JUMPERED_DMA */ | |
395 | ||
396 | PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name)); | |
397 | /* Reset the hardware here. Don't forget to set the station address. */ | |
398 | ||
399 | outb(RS_RESET, EDLC_RESET); /* Hold up EDLC_RESET while configing board */ | |
400 | outb(0, IE_RESET); /* Hardware reset of ni5010 board */ | |
401 | outb(XMD_LBC, EDLC_XMODE); /* Only loopback xmits */ | |
402 | ||
403 | PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name)); | |
404 | /* Set the station address */ | |
405 | for(i = 0;i < 6; i++) { | |
406 | outb(dev->dev_addr[i], EDLC_ADDR + i); | |
407 | } | |
408 | ||
409 | PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name)); | |
410 | outb(0, EDLC_XMASK); /* No xmit interrupts for now */ | |
411 | outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); | |
412 | /* Normal packet xmit mode */ | |
413 | outb(0xff, EDLC_XCLR); /* Clear all pending xmit interrupts */ | |
414 | outb(RMD_BROADCAST, EDLC_RMODE); | |
415 | /* Receive broadcast and normal packets */ | |
416 | reset_receiver(dev); /* Ready ni5010 for receiving packets */ | |
417 | ||
418 | outb(0, EDLC_RESET); /* Un-reset the ni5010 */ | |
419 | ||
420 | netif_start_queue(dev); | |
421 | ||
422 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
423 | ||
424 | PRINTK((KERN_DEBUG "%s: open successful\n", dev->name)); | |
425 | return 0; | |
426 | } | |
427 | ||
428 | static void reset_receiver(struct net_device *dev) | |
429 | { | |
430 | int ioaddr = dev->base_addr; | |
431 | ||
432 | PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name)); | |
433 | outw(0, IE_GP); /* Receive packet at start of buffer */ | |
434 | outb(0xff, EDLC_RCLR); /* Clear all pending rcv interrupts */ | |
435 | outb(0, IE_MMODE); /* Put EDLC to rcv buffer */ | |
436 | outb(MM_EN_RCV, IE_MMODE); /* Enable rcv */ | |
437 | outb(0xff, EDLC_RMASK); /* Enable all rcv interrupts */ | |
438 | } | |
439 | ||
440 | static void ni5010_timeout(struct net_device *dev) | |
441 | { | |
442 | printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, | |
443 | tx_done(dev) ? "IRQ conflict" : "network cable problem"); | |
444 | /* Try to restart the adaptor. */ | |
445 | /* FIXME: Give it a real kick here */ | |
446 | chipset_init(dev, 1); | |
447 | dev->trans_start = jiffies; /* prevent tx timeout */ | |
448 | netif_wake_queue(dev); | |
449 | } | |
450 | ||
451 | static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev) | |
452 | { | |
453 | int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; | |
454 | ||
455 | PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name)); | |
456 | ||
457 | /* | |
458 | * Block sending | |
459 | */ | |
460 | ||
461 | netif_stop_queue(dev); | |
462 | hardware_send_packet(dev, (unsigned char *)skb->data, skb->len, length-skb->len); | |
463 | dev_kfree_skb (skb); | |
464 | return NETDEV_TX_OK; | |
465 | } | |
466 | ||
467 | /* | |
468 | * The typical workload of the driver: | |
469 | * Handle the network interface interrupts. | |
470 | */ | |
471 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id) | |
472 | { | |
473 | struct net_device *dev = dev_id; | |
474 | struct ni5010_local *lp; | |
475 | int ioaddr, status; | |
476 | int xmit_was_error = 0; | |
477 | ||
478 | PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name)); | |
479 | ||
480 | ioaddr = dev->base_addr; | |
481 | lp = netdev_priv(dev); | |
482 | ||
483 | spin_lock(&lp->lock); | |
484 | status = inb(IE_ISTAT); | |
485 | PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status)); | |
486 | ||
487 | if ((status & IS_R_INT) == 0) ni5010_rx(dev); | |
488 | ||
489 | if ((status & IS_X_INT) == 0) { | |
490 | xmit_was_error = process_xmt_interrupt(dev); | |
491 | } | |
492 | ||
493 | if ((status & IS_DMA_INT) == 0) { | |
494 | PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name)); | |
495 | outb(0, IE_DMA_RST); /* Reset DMA int */ | |
496 | } | |
497 | ||
498 | if (!xmit_was_error) | |
499 | reset_receiver(dev); | |
500 | spin_unlock(&lp->lock); | |
501 | return IRQ_HANDLED; | |
502 | } | |
503 | ||
504 | ||
505 | static void dump_packet(void *buf, int len) | |
506 | { | |
507 | int i; | |
508 | ||
509 | printk(KERN_DEBUG "Packet length = %#4x\n", len); | |
510 | for (i = 0; i < len; i++){ | |
511 | if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i); | |
512 | if (i % 2 == 0) printk(" "); | |
513 | printk("%2.2x", ((unsigned char *)buf)[i]); | |
514 | if (i % 16 == 15) printk("\n"); | |
515 | } | |
516 | printk("\n"); | |
517 | } | |
518 | ||
519 | /* We have a good packet, get it out of the buffer. */ | |
520 | static void ni5010_rx(struct net_device *dev) | |
521 | { | |
522 | int ioaddr = dev->base_addr; | |
523 | unsigned char rcv_stat; | |
524 | struct sk_buff *skb; | |
525 | int i_pkt_size; | |
526 | ||
527 | PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name)); | |
528 | ||
529 | rcv_stat = inb(EDLC_RSTAT); | |
530 | PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat)); | |
531 | ||
532 | if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) { | |
533 | PRINTK((KERN_INFO "%s: receive error.\n", dev->name)); | |
534 | dev->stats.rx_errors++; | |
535 | if (rcv_stat & RS_RUNT) dev->stats.rx_length_errors++; | |
536 | if (rcv_stat & RS_ALIGN) dev->stats.rx_frame_errors++; | |
537 | if (rcv_stat & RS_CRC_ERR) dev->stats.rx_crc_errors++; | |
538 | if (rcv_stat & RS_OFLW) dev->stats.rx_fifo_errors++; | |
539 | outb(0xff, EDLC_RCLR); /* Clear the interrupt */ | |
540 | return; | |
541 | } | |
542 | ||
543 | outb(0xff, EDLC_RCLR); /* Clear the interrupt */ | |
544 | ||
545 | i_pkt_size = inw(IE_RCNT); | |
546 | if (i_pkt_size > ETH_FRAME_LEN || i_pkt_size < 10 ) { | |
547 | PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n", | |
548 | dev->name, i_pkt_size)); | |
549 | dev->stats.rx_errors++; | |
550 | dev->stats.rx_length_errors++; | |
551 | return; | |
552 | } | |
553 | ||
554 | /* Malloc up new buffer. */ | |
555 | skb = dev_alloc_skb(i_pkt_size + 3); | |
556 | if (skb == NULL) { | |
557 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name); | |
558 | dev->stats.rx_dropped++; | |
559 | return; | |
560 | } | |
561 | ||
562 | skb_reserve(skb, 2); | |
563 | ||
564 | /* Read packet into buffer */ | |
565 | outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */ | |
566 | outw(0, IE_GP); /* Seek to beginning of packet */ | |
567 | insb(IE_RBUF, skb_put(skb, i_pkt_size), i_pkt_size); | |
568 | ||
569 | if (NI5010_DEBUG >= 4) | |
570 | dump_packet(skb->data, skb->len); | |
571 | ||
572 | skb->protocol = eth_type_trans(skb,dev); | |
573 | netif_rx(skb); | |
574 | dev->stats.rx_packets++; | |
575 | dev->stats.rx_bytes += i_pkt_size; | |
576 | ||
577 | PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n", | |
578 | dev->name, i_pkt_size)); | |
579 | } | |
580 | ||
581 | static int process_xmt_interrupt(struct net_device *dev) | |
582 | { | |
583 | struct ni5010_local *lp = netdev_priv(dev); | |
584 | int ioaddr = dev->base_addr; | |
585 | int xmit_stat; | |
586 | ||
587 | PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name)); | |
588 | ||
589 | xmit_stat = inb(EDLC_XSTAT); | |
590 | PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat)); | |
591 | ||
592 | outb(0, EDLC_XMASK); /* Disable xmit IRQ's */ | |
593 | outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */ | |
594 | ||
595 | if (xmit_stat & XS_COLL){ | |
596 | PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n", | |
597 | dev->name)); | |
598 | outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP); | |
599 | /* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */ | |
600 | outb(MM_EN_XMT | MM_MUX, IE_MMODE); | |
601 | outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */ | |
602 | dev->stats.collisions++; | |
603 | return 1; | |
604 | } | |
605 | ||
606 | /* FIXME: handle other xmt error conditions */ | |
607 | ||
608 | dev->stats.tx_packets++; | |
609 | dev->stats.tx_bytes += lp->o_pkt_size; | |
610 | netif_wake_queue(dev); | |
611 | ||
612 | PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n", | |
613 | dev->name, lp->o_pkt_size)); | |
614 | ||
615 | return 0; | |
616 | } | |
617 | ||
618 | /* The inverse routine to ni5010_open(). */ | |
619 | static int ni5010_close(struct net_device *dev) | |
620 | { | |
621 | int ioaddr = dev->base_addr; | |
622 | ||
623 | PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name)); | |
624 | #ifdef JUMPERED_INTERRUPTS | |
625 | free_irq(dev->irq, NULL); | |
626 | #endif | |
627 | /* Put card in held-RESET state */ | |
628 | outb(0, IE_MMODE); | |
629 | outb(RS_RESET, EDLC_RESET); | |
630 | ||
631 | netif_stop_queue(dev); | |
632 | ||
633 | PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname)); | |
634 | return 0; | |
635 | ||
636 | } | |
637 | ||
638 | /* Set or clear the multicast filter for this adaptor. | |
639 | num_addrs == -1 Promiscuous mode, receive all packets | |
640 | num_addrs == 0 Normal mode, clear multicast list | |
641 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do | |
642 | best-effort filtering. | |
643 | */ | |
644 | static void ni5010_set_multicast_list(struct net_device *dev) | |
645 | { | |
646 | short ioaddr = dev->base_addr; | |
647 | ||
648 | PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name)); | |
649 | ||
650 | if (dev->flags & IFF_PROMISC || dev->flags & IFF_ALLMULTI || | |
651 | !netdev_mc_empty(dev)) { | |
652 | outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */ | |
653 | PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name)); | |
654 | } else { | |
655 | PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name)); | |
656 | outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */ | |
657 | } | |
658 | } | |
659 | ||
660 | static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad) | |
661 | { | |
662 | struct ni5010_local *lp = netdev_priv(dev); | |
663 | int ioaddr = dev->base_addr; | |
664 | unsigned long flags; | |
665 | unsigned int buf_offs; | |
666 | ||
667 | PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name)); | |
668 | ||
669 | if (length > ETH_FRAME_LEN) { | |
670 | PRINTK((KERN_WARNING "%s: packet too large, not possible\n", | |
671 | dev->name)); | |
672 | return; | |
673 | } | |
674 | ||
675 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
676 | ||
677 | if (inb(IE_ISTAT) & IS_EN_XMT) { | |
678 | PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n", | |
679 | dev->name)); | |
680 | return; | |
681 | } | |
682 | ||
683 | if (NI5010_DEBUG > 3) dump_packet(buf, length); | |
684 | ||
685 | buf_offs = NI5010_BUFSIZE - length - pad; | |
686 | ||
687 | spin_lock_irqsave(&lp->lock, flags); | |
688 | lp->o_pkt_size = length + pad; | |
689 | ||
690 | outb(0, EDLC_RMASK); /* Mask all receive interrupts */ | |
691 | outb(0, IE_MMODE); /* Put Xmit buffer on system bus */ | |
692 | outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */ | |
693 | ||
694 | outw(buf_offs, IE_GP); /* Point GP at start of packet */ | |
695 | outsb(IE_XBUF, buf, length); /* Put data in buffer */ | |
696 | while(pad--) | |
697 | outb(0, IE_XBUF); | |
698 | ||
699 | outw(buf_offs, IE_GP); /* Rewrite where packet starts */ | |
700 | ||
701 | /* should work without that outb() (Crynwr used it) */ | |
702 | /*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */ | |
703 | outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */ | |
704 | outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */ | |
705 | ||
706 | spin_unlock_irqrestore(&lp->lock, flags); | |
707 | ||
708 | netif_wake_queue(dev); | |
709 | ||
710 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
711 | } | |
712 | ||
713 | static void chipset_init(struct net_device *dev, int startp) | |
714 | { | |
715 | /* FIXME: Move some stuff here */ | |
716 | PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name)); | |
717 | } | |
718 | ||
719 | static void ni5010_show_registers(struct net_device *dev) | |
720 | { | |
721 | int ioaddr = dev->base_addr; | |
722 | ||
723 | PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT))); | |
724 | PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK))); | |
725 | PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT))); | |
726 | PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK))); | |
727 | PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE))); | |
728 | PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE))); | |
729 | PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT))); | |
730 | } | |
731 | ||
732 | #ifdef MODULE | |
733 | static struct net_device *dev_ni5010; | |
734 | ||
735 | module_param(io, int, 0); | |
736 | module_param(irq, int, 0); | |
737 | MODULE_PARM_DESC(io, "ni5010 I/O base address"); | |
738 | MODULE_PARM_DESC(irq, "ni5010 IRQ number"); | |
739 | ||
740 | static int __init ni5010_init_module(void) | |
741 | { | |
742 | PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname)); | |
743 | /* | |
744 | if(io <= 0 || irq == 0){ | |
745 | printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname); | |
746 | printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname); | |
747 | return -EINVAL; | |
748 | } | |
749 | */ | |
750 | if (io <= 0){ | |
751 | printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname); | |
752 | } | |
753 | ||
754 | PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io)); | |
755 | dev_ni5010 = ni5010_probe(-1); | |
756 | if (IS_ERR(dev_ni5010)) | |
757 | return PTR_ERR(dev_ni5010); | |
758 | return 0; | |
759 | } | |
760 | ||
761 | static void __exit ni5010_cleanup_module(void) | |
762 | { | |
763 | PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname)); | |
764 | unregister_netdev(dev_ni5010); | |
765 | release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT); | |
766 | free_netdev(dev_ni5010); | |
767 | } | |
768 | module_init(ni5010_init_module); | |
769 | module_exit(ni5010_cleanup_module); | |
770 | #endif /* MODULE */ | |
771 | MODULE_LICENSE("GPL"); |