Commit | Line | Data |
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1da177e4 LT |
1 | /* ni5010.c: A network driver for the MiCom-Interlan NI5010 ethercard. |
2 | * | |
5b552b16 | 3 | * Copyright 1996,1997,2006 Jan-Pascal van Best and Andreas Mohr. |
1da177e4 LT |
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: | |
5b552b16 | 9 | * janpascal@vanbest.org andi@lisas.de |
1da177e4 LT |
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) | |
5b552b16 | 25 | * 060611 v1.02: slight cleanup: email addresses, driver modernization. |
1da177e4 | 26 | * Bugs: |
5b552b16 | 27 | * - not SMP-safe (no locking of I/O accesses) |
1da177e4 LT |
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!) | |
5b552b16 | 38 | * Implement DMA (Again, is this useful? Some docs say DMA is |
1da177e4 LT |
39 | * slower than programmed I/O) |
40 | * | |
41 | * Compile with: | |
42 | * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ \ | |
6aa20a22 | 43 | * -DMODULE -c ni5010.c |
1da177e4 LT |
44 | * |
45 | * Insert with e.g.: | |
5b552b16 | 46 | * insmod ni5010.ko io=0x300 irq=5 |
1da177e4 LT |
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/slab.h> | |
55 | #include <linux/interrupt.h> | |
56 | #include <linux/delay.h> | |
57 | #include <linux/init.h> | |
58 | #include <linux/bitops.h> | |
59 | #include <asm/io.h> | |
60 | #include <asm/dma.h> | |
61 | ||
62 | #include <linux/netdevice.h> | |
63 | #include <linux/etherdevice.h> | |
64 | #include <linux/skbuff.h> | |
65 | ||
66 | #include "ni5010.h" | |
67 | ||
5b552b16 AM |
68 | static const char boardname[] = "NI5010"; |
69 | static char version[] __initdata = | |
70 | "ni5010.c: v1.02 20060611 Jan-Pascal van Best and Andreas Mohr\n"; | |
6aa20a22 | 71 | |
1da177e4 LT |
72 | /* bufsize_rcv == 0 means autoprobing */ |
73 | static unsigned int bufsize_rcv; | |
74 | ||
5b552b16 AM |
75 | #define JUMPERED_INTERRUPTS /* IRQ line jumpered on board */ |
76 | #undef JUMPERED_DMA /* No DMA used */ | |
1da177e4 LT |
77 | #undef FULL_IODETECT /* Only detect in portlist */ |
78 | ||
79 | #ifndef FULL_IODETECT | |
80 | /* A zero-terminated list of I/O addresses to be probed. */ | |
81 | static unsigned int ports[] __initdata = | |
82 | { 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0 }; | |
83 | #endif | |
84 | ||
85 | /* Use 0 for production, 1 for verification, >2 for debug */ | |
86 | #ifndef NI5010_DEBUG | |
87 | #define NI5010_DEBUG 0 | |
88 | #endif | |
89 | ||
90 | /* Information that needs to be kept for each board. */ | |
91 | struct ni5010_local { | |
92 | struct net_device_stats stats; | |
93 | int o_pkt_size; | |
94 | spinlock_t lock; | |
95 | }; | |
96 | ||
97 | /* Index to functions, as function prototypes. */ | |
98 | ||
99 | static int ni5010_probe1(struct net_device *dev, int ioaddr); | |
100 | static int ni5010_open(struct net_device *dev); | |
101 | static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev); | |
102 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs); | |
103 | static void ni5010_rx(struct net_device *dev); | |
104 | static void ni5010_timeout(struct net_device *dev); | |
105 | static int ni5010_close(struct net_device *dev); | |
106 | static struct net_device_stats *ni5010_get_stats(struct net_device *dev); | |
107 | static void ni5010_set_multicast_list(struct net_device *dev); | |
108 | static void reset_receiver(struct net_device *dev); | |
109 | ||
110 | static int process_xmt_interrupt(struct net_device *dev); | |
111 | #define tx_done(dev) 1 | |
112 | static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad); | |
113 | static void chipset_init(struct net_device *dev, int startp); | |
114 | static void dump_packet(void *buf, int len); | |
115 | static void ni5010_show_registers(struct net_device *dev); | |
116 | ||
117 | static int io; | |
118 | static int irq; | |
119 | ||
120 | struct net_device * __init ni5010_probe(int unit) | |
121 | { | |
122 | struct net_device *dev = alloc_etherdev(sizeof(struct ni5010_local)); | |
123 | int *port; | |
124 | int err = 0; | |
125 | ||
126 | if (!dev) | |
127 | return ERR_PTR(-ENOMEM); | |
128 | ||
129 | if (unit >= 0) { | |
130 | sprintf(dev->name, "eth%d", unit); | |
131 | netdev_boot_setup_check(dev); | |
132 | io = dev->base_addr; | |
133 | irq = dev->irq; | |
134 | } | |
135 | ||
136 | PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name)); | |
137 | ||
138 | SET_MODULE_OWNER(dev); | |
139 | ||
140 | if (io > 0x1ff) { /* Check a single specified location. */ | |
141 | err = ni5010_probe1(dev, io); | |
142 | } else if (io != 0) { /* Don't probe at all. */ | |
143 | err = -ENXIO; | |
144 | } else { | |
145 | #ifdef FULL_IODETECT | |
146 | for (io=0x200; io<0x400 && ni5010_probe1(dev, io) ; io+=0x20) | |
147 | ; | |
148 | if (io == 0x400) | |
149 | err = -ENODEV; | |
150 | ||
151 | #else | |
152 | for (port = ports; *port && ni5010_probe1(dev, *port); port++) | |
153 | ; | |
154 | if (!*port) | |
155 | err = -ENODEV; | |
156 | #endif /* FULL_IODETECT */ | |
157 | } | |
158 | if (err) | |
159 | goto out; | |
160 | err = register_netdev(dev); | |
161 | if (err) | |
162 | goto out1; | |
163 | return dev; | |
164 | out1: | |
165 | release_region(dev->base_addr, NI5010_IO_EXTENT); | |
166 | out: | |
167 | free_netdev(dev); | |
168 | return ERR_PTR(err); | |
169 | } | |
170 | ||
171 | static inline int rd_port(int ioaddr) | |
172 | { | |
173 | inb(IE_RBUF); | |
174 | return inb(IE_SAPROM); | |
175 | } | |
176 | ||
177 | static void __init trigger_irq(int ioaddr) | |
178 | { | |
179 | outb(0x00, EDLC_RESET); /* Clear EDLC hold RESET state */ | |
180 | outb(0x00, IE_RESET); /* Board reset */ | |
181 | outb(0x00, EDLC_XMASK); /* Disable all Xmt interrupts */ | |
182 | outb(0x00, EDLC_RMASK); /* Disable all Rcv interrupt */ | |
183 | outb(0xff, EDLC_XCLR); /* Clear all pending Xmt interrupts */ | |
184 | outb(0xff, EDLC_RCLR); /* Clear all pending Rcv interrupts */ | |
185 | /* | |
186 | * Transmit packet mode: Ignore parity, Power xcvr, | |
187 | * Enable loopback | |
188 | */ | |
189 | outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); | |
190 | outb(RMD_BROADCAST, EDLC_RMODE); /* Receive normal&broadcast */ | |
191 | outb(XM_ALL, EDLC_XMASK); /* Enable all Xmt interrupts */ | |
192 | udelay(50); /* FIXME: Necessary? */ | |
193 | outb(MM_EN_XMT|MM_MUX, IE_MMODE); /* Start transmission */ | |
194 | } | |
195 | ||
196 | /* | |
197 | * This is the real probe routine. Linux has a history of friendly device | |
198 | * probes on the ISA bus. A good device probes avoids doing writes, and | |
199 | * verifies that the correct device exists and functions. | |
200 | */ | |
201 | ||
202 | static int __init ni5010_probe1(struct net_device *dev, int ioaddr) | |
203 | { | |
204 | static unsigned version_printed; | |
205 | struct ni5010_local *lp; | |
206 | int i; | |
207 | unsigned int data = 0; | |
208 | int boguscount = 40; | |
209 | int err = -ENODEV; | |
210 | ||
211 | dev->base_addr = ioaddr; | |
212 | dev->irq = irq; | |
213 | ||
214 | if (!request_region(ioaddr, NI5010_IO_EXTENT, boardname)) | |
215 | return -EBUSY; | |
216 | ||
217 | /* | |
218 | * This is no "official" probe method, I've rather tested which | |
219 | * probe works best with my seven NI5010 cards | |
220 | * (they have very different serial numbers) | |
221 | * Suggestions or failure reports are very, very welcome ! | |
222 | * But I think it is a relatively good probe method | |
223 | * since it doesn't use any "outb" | |
224 | * It should be nearly 100% reliable ! | |
225 | * well-known WARNING: this probe method (like many others) | |
226 | * will hang the system if a NE2000 card region is probed ! | |
227 | * | |
228 | * - Andreas | |
229 | */ | |
230 | ||
6aa20a22 | 231 | PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n", |
1da177e4 LT |
232 | dev->name, ioaddr)); |
233 | ||
234 | if (inb(ioaddr+0) == 0xff) | |
235 | goto out; | |
236 | ||
237 | while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) & | |
238 | rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff) | |
239 | { | |
240 | if (boguscount-- == 0) | |
241 | goto out; | |
242 | } | |
243 | ||
244 | PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name)); | |
245 | ||
246 | for (i=0; i<32; i++) | |
247 | if ( (data = rd_port(ioaddr)) != 0xff) break; | |
248 | if (data==0xff) | |
249 | goto out; | |
250 | ||
251 | PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name)); | |
252 | ||
253 | if ((data != SA_ADDR0) || (rd_port(ioaddr) != SA_ADDR1) || | |
254 | (rd_port(ioaddr) != SA_ADDR2)) | |
255 | goto out; | |
256 | ||
257 | for (i=0; i<4; i++) | |
258 | rd_port(ioaddr); | |
259 | ||
260 | if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) || | |
261 | (rd_port(ioaddr) != NI5010_MAGICVAL2) ) | |
262 | goto out; | |
263 | ||
264 | PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name)); | |
265 | ||
266 | if (NI5010_DEBUG && version_printed++ == 0) | |
267 | printk(KERN_INFO "%s", version); | |
268 | ||
269 | printk("NI5010 ethercard probe at 0x%x: ", ioaddr); | |
270 | ||
271 | dev->base_addr = ioaddr; | |
272 | ||
273 | for (i=0; i<6; i++) { | |
274 | outw(i, IE_GP); | |
275 | printk("%2.2x ", dev->dev_addr[i] = inb(IE_SAPROM)); | |
276 | } | |
277 | ||
278 | PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name)); | |
279 | ||
5b552b16 | 280 | #ifdef JUMPERED_INTERRUPTS |
1da177e4 LT |
281 | if (dev->irq == 0xff) |
282 | ; | |
283 | else if (dev->irq < 2) { | |
284 | unsigned long irq_mask; | |
285 | ||
286 | PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name)); | |
287 | ||
288 | irq_mask = probe_irq_on(); | |
289 | trigger_irq(ioaddr); | |
290 | mdelay(20); | |
291 | dev->irq = probe_irq_off(irq_mask); | |
292 | ||
293 | PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name)); | |
294 | ||
295 | if (dev->irq == 0) { | |
296 | err = -EAGAIN; | |
297 | printk(KERN_WARNING "%s: no IRQ found!\n", dev->name); | |
298 | goto out; | |
299 | } | |
300 | PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name)); | |
301 | } else if (dev->irq == 2) { | |
302 | dev->irq = 9; | |
303 | } | |
5b552b16 | 304 | #endif /* JUMPERED_INTERRUPTS */ |
1da177e4 LT |
305 | PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name)); |
306 | ||
307 | /* DMA is not supported (yet?), so no use detecting it */ | |
308 | lp = netdev_priv(dev); | |
309 | ||
310 | spin_lock_init(&lp->lock); | |
311 | ||
312 | PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name)); | |
313 | ||
314 | /* get the size of the onboard receive buffer | |
315 | * higher addresses than bufsize are wrapped into real buffer | |
316 | * i.e. data for offs. 0x801 is written to 0x1 with a 2K onboard buffer | |
317 | */ | |
318 | if (!bufsize_rcv) { | |
319 | outb(1, IE_MMODE); /* Put Rcv buffer on system bus */ | |
320 | outw(0, IE_GP); /* Point GP at start of packet */ | |
321 | outb(0, IE_RBUF); /* set buffer byte 0 to 0 */ | |
322 | for (i = 1; i < 0xff; i++) { | |
323 | outw(i << 8, IE_GP); /* Point GP at packet size to be tested */ | |
324 | outb(i, IE_RBUF); | |
325 | outw(0x0, IE_GP); /* Point GP at start of packet */ | |
326 | data = inb(IE_RBUF); | |
327 | if (data == i) break; | |
328 | } | |
329 | bufsize_rcv = i << 8; | |
330 | outw(0, IE_GP); /* Point GP at start of packet */ | |
331 | outb(0, IE_RBUF); /* set buffer byte 0 to 0 again */ | |
332 | } | |
5b552b16 | 333 | printk("-> bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE); |
1da177e4 | 334 | memset(dev->priv, 0, sizeof(struct ni5010_local)); |
6aa20a22 | 335 | |
1da177e4 LT |
336 | dev->open = ni5010_open; |
337 | dev->stop = ni5010_close; | |
338 | dev->hard_start_xmit = ni5010_send_packet; | |
339 | dev->get_stats = ni5010_get_stats; | |
340 | dev->set_multicast_list = ni5010_set_multicast_list; | |
341 | dev->tx_timeout = ni5010_timeout; | |
342 | dev->watchdog_timeo = HZ/20; | |
343 | ||
344 | dev->flags &= ~IFF_MULTICAST; /* Multicast doesn't work */ | |
345 | ||
346 | /* Shut up the ni5010 */ | |
347 | outb(0, EDLC_RMASK); /* Mask all receive interrupts */ | |
348 | outb(0, EDLC_XMASK); /* Mask all xmit interrupts */ | |
349 | outb(0xff, EDLC_RCLR); /* Kill all pending rcv interrupts */ | |
350 | outb(0xff, EDLC_XCLR); /* Kill all pending xmt interrupts */ | |
351 | ||
352 | printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq); | |
5b552b16 AM |
353 | if (dev->dma) |
354 | printk(" & DMA %d", dev->dma); | |
1da177e4 | 355 | printk(".\n"); |
1da177e4 LT |
356 | return 0; |
357 | out: | |
358 | release_region(dev->base_addr, NI5010_IO_EXTENT); | |
359 | return err; | |
360 | } | |
361 | ||
6aa20a22 | 362 | /* |
1da177e4 LT |
363 | * Open/initialize the board. This is called (in the current kernel) |
364 | * sometime after booting when the 'ifconfig' program is run. | |
365 | * | |
366 | * This routine should set everything up anew at each open, even | |
367 | * registers that "should" only need to be set once at boot, so that | |
5b552b16 | 368 | * there is a non-reboot way to recover if something goes wrong. |
1da177e4 | 369 | */ |
6aa20a22 | 370 | |
1da177e4 LT |
371 | static int ni5010_open(struct net_device *dev) |
372 | { | |
373 | int ioaddr = dev->base_addr; | |
374 | int i; | |
375 | ||
6aa20a22 JG |
376 | PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name)); |
377 | ||
1da177e4 LT |
378 | if (request_irq(dev->irq, &ni5010_interrupt, 0, boardname, dev)) { |
379 | printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq); | |
380 | return -EAGAIN; | |
381 | } | |
382 | PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name)); | |
383 | /* | |
384 | * Always allocate the DMA channel after the IRQ, | |
385 | * and clean up on failure. | |
386 | */ | |
5b552b16 | 387 | #ifdef JUMPERED_DMA |
1da177e4 LT |
388 | if (request_dma(dev->dma, cardname)) { |
389 | printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma); | |
390 | free_irq(dev->irq, NULL); | |
391 | return -EAGAIN; | |
392 | } | |
5b552b16 | 393 | #endif /* JUMPERED_DMA */ |
1da177e4 LT |
394 | |
395 | PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name)); | |
396 | /* Reset the hardware here. Don't forget to set the station address. */ | |
397 | ||
398 | outb(RS_RESET, EDLC_RESET); /* Hold up EDLC_RESET while configing board */ | |
399 | outb(0, IE_RESET); /* Hardware reset of ni5010 board */ | |
400 | outb(XMD_LBC, EDLC_XMODE); /* Only loopback xmits */ | |
401 | ||
402 | PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name)); | |
403 | /* Set the station address */ | |
404 | for(i = 0;i < 6; i++) { | |
405 | outb(dev->dev_addr[i], EDLC_ADDR + i); | |
406 | } | |
6aa20a22 JG |
407 | |
408 | PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name)); | |
1da177e4 | 409 | outb(0, EDLC_XMASK); /* No xmit interrupts for now */ |
6aa20a22 | 410 | outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); |
1da177e4 LT |
411 | /* Normal packet xmit mode */ |
412 | outb(0xff, EDLC_XCLR); /* Clear all pending xmit interrupts */ | |
413 | outb(RMD_BROADCAST, EDLC_RMODE); | |
414 | /* Receive broadcast and normal packets */ | |
415 | reset_receiver(dev); /* Ready ni5010 for receiving packets */ | |
6aa20a22 | 416 | |
1da177e4 | 417 | outb(0, EDLC_RESET); /* Un-reset the ni5010 */ |
6aa20a22 | 418 | |
1da177e4 | 419 | netif_start_queue(dev); |
6aa20a22 JG |
420 | |
421 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
1da177e4 LT |
422 | |
423 | PRINTK((KERN_DEBUG "%s: open successful\n", dev->name)); | |
424 | return 0; | |
425 | } | |
426 | ||
427 | static void reset_receiver(struct net_device *dev) | |
428 | { | |
429 | int ioaddr = dev->base_addr; | |
6aa20a22 | 430 | |
1da177e4 LT |
431 | PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name)); |
432 | outw(0, IE_GP); /* Receive packet at start of buffer */ | |
433 | outb(0xff, EDLC_RCLR); /* Clear all pending rcv interrupts */ | |
434 | outb(0, IE_MMODE); /* Put EDLC to rcv buffer */ | |
435 | outb(MM_EN_RCV, IE_MMODE); /* Enable rcv */ | |
436 | outb(0xff, EDLC_RMASK); /* Enable all rcv interrupts */ | |
437 | } | |
438 | ||
439 | static void ni5010_timeout(struct net_device *dev) | |
440 | { | |
441 | printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, | |
442 | tx_done(dev) ? "IRQ conflict" : "network cable problem"); | |
443 | /* Try to restart the adaptor. */ | |
444 | /* FIXME: Give it a real kick here */ | |
445 | chipset_init(dev, 1); | |
446 | dev->trans_start = jiffies; | |
447 | netif_wake_queue(dev); | |
448 | } | |
449 | ||
450 | static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev) | |
451 | { | |
452 | int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; | |
453 | ||
454 | PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name)); | |
455 | ||
6aa20a22 | 456 | /* |
1da177e4 LT |
457 | * Block sending |
458 | */ | |
6aa20a22 | 459 | |
1da177e4 LT |
460 | netif_stop_queue(dev); |
461 | hardware_send_packet(dev, (unsigned char *)skb->data, skb->len, length-skb->len); | |
462 | dev->trans_start = jiffies; | |
463 | dev_kfree_skb (skb); | |
464 | return 0; | |
465 | } | |
466 | ||
6aa20a22 | 467 | /* |
1da177e4 | 468 | * The typical workload of the driver: |
6aa20a22 | 469 | * Handle the network interface interrupts. |
1da177e4 LT |
470 | */ |
471 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
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); | |
6aa20a22 | 482 | |
1da177e4 | 483 | spin_lock(&lp->lock); |
6aa20a22 | 484 | status = inb(IE_ISTAT); |
1da177e4 | 485 | PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status)); |
6aa20a22 | 486 | |
1da177e4 LT |
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 | ||
6aa20a22 JG |
498 | if (!xmit_was_error) |
499 | reset_receiver(dev); | |
1da177e4 LT |
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; | |
6aa20a22 | 508 | |
1da177e4 LT |
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"); | |
6aa20a22 | 517 | |
1da177e4 LT |
518 | return; |
519 | } | |
520 | ||
521 | /* We have a good packet, get it out of the buffer. */ | |
522 | static void ni5010_rx(struct net_device *dev) | |
523 | { | |
524 | struct ni5010_local *lp = netdev_priv(dev); | |
525 | int ioaddr = dev->base_addr; | |
526 | unsigned char rcv_stat; | |
527 | struct sk_buff *skb; | |
528 | int i_pkt_size; | |
6aa20a22 JG |
529 | |
530 | PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name)); | |
531 | ||
1da177e4 | 532 | rcv_stat = inb(EDLC_RSTAT); |
6aa20a22 JG |
533 | PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat)); |
534 | ||
1da177e4 LT |
535 | if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) { |
536 | PRINTK((KERN_INFO "%s: receive error.\n", dev->name)); | |
537 | lp->stats.rx_errors++; | |
538 | if (rcv_stat & RS_RUNT) lp->stats.rx_length_errors++; | |
539 | if (rcv_stat & RS_ALIGN) lp->stats.rx_frame_errors++; | |
540 | if (rcv_stat & RS_CRC_ERR) lp->stats.rx_crc_errors++; | |
541 | if (rcv_stat & RS_OFLW) lp->stats.rx_fifo_errors++; | |
542 | outb(0xff, EDLC_RCLR); /* Clear the interrupt */ | |
543 | return; | |
544 | } | |
6aa20a22 | 545 | |
1da177e4 LT |
546 | outb(0xff, EDLC_RCLR); /* Clear the interrupt */ |
547 | ||
548 | i_pkt_size = inw(IE_RCNT); | |
549 | if (i_pkt_size > ETH_FRAME_LEN || i_pkt_size < 10 ) { | |
6aa20a22 | 550 | PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n", |
1da177e4 LT |
551 | dev->name, i_pkt_size)); |
552 | lp->stats.rx_errors++; | |
553 | lp->stats.rx_length_errors++; | |
554 | return; | |
555 | } | |
556 | ||
557 | /* Malloc up new buffer. */ | |
558 | skb = dev_alloc_skb(i_pkt_size + 3); | |
559 | if (skb == NULL) { | |
560 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name); | |
561 | lp->stats.rx_dropped++; | |
562 | return; | |
563 | } | |
6aa20a22 | 564 | |
1da177e4 LT |
565 | skb->dev = dev; |
566 | skb_reserve(skb, 2); | |
6aa20a22 | 567 | |
1da177e4 LT |
568 | /* Read packet into buffer */ |
569 | outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */ | |
570 | outw(0, IE_GP); /* Seek to beginning of packet */ | |
6aa20a22 JG |
571 | insb(IE_RBUF, skb_put(skb, i_pkt_size), i_pkt_size); |
572 | ||
573 | if (NI5010_DEBUG >= 4) | |
574 | dump_packet(skb->data, skb->len); | |
575 | ||
1da177e4 LT |
576 | skb->protocol = eth_type_trans(skb,dev); |
577 | netif_rx(skb); | |
578 | dev->last_rx = jiffies; | |
579 | lp->stats.rx_packets++; | |
580 | lp->stats.rx_bytes += i_pkt_size; | |
581 | ||
6aa20a22 | 582 | PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n", |
1da177e4 | 583 | dev->name, i_pkt_size)); |
6aa20a22 | 584 | |
1da177e4 LT |
585 | } |
586 | ||
587 | static int process_xmt_interrupt(struct net_device *dev) | |
588 | { | |
589 | struct ni5010_local *lp = netdev_priv(dev); | |
590 | int ioaddr = dev->base_addr; | |
591 | int xmit_stat; | |
592 | ||
593 | PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name)); | |
594 | ||
595 | xmit_stat = inb(EDLC_XSTAT); | |
596 | PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat)); | |
6aa20a22 | 597 | |
1da177e4 LT |
598 | outb(0, EDLC_XMASK); /* Disable xmit IRQ's */ |
599 | outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */ | |
6aa20a22 | 600 | |
1da177e4 | 601 | if (xmit_stat & XS_COLL){ |
6aa20a22 | 602 | PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n", |
1da177e4 LT |
603 | dev->name)); |
604 | outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP); | |
605 | /* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */ | |
606 | outb(MM_EN_XMT | MM_MUX, IE_MMODE); | |
607 | outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */ | |
608 | lp->stats.collisions++; | |
609 | return 1; | |
610 | } | |
611 | ||
612 | /* FIXME: handle other xmt error conditions */ | |
613 | ||
614 | lp->stats.tx_packets++; | |
615 | lp->stats.tx_bytes += lp->o_pkt_size; | |
616 | netif_wake_queue(dev); | |
6aa20a22 JG |
617 | |
618 | PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n", | |
1da177e4 LT |
619 | dev->name, lp->o_pkt_size)); |
620 | ||
621 | return 0; | |
622 | } | |
623 | ||
624 | /* The inverse routine to ni5010_open(). */ | |
625 | static int ni5010_close(struct net_device *dev) | |
626 | { | |
627 | int ioaddr = dev->base_addr; | |
628 | ||
629 | PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name)); | |
5b552b16 | 630 | #ifdef JUMPERED_INTERRUPTS |
1da177e4 LT |
631 | free_irq(dev->irq, NULL); |
632 | #endif | |
633 | /* Put card in held-RESET state */ | |
634 | outb(0, IE_MMODE); | |
635 | outb(RS_RESET, EDLC_RESET); | |
636 | ||
637 | netif_stop_queue(dev); | |
6aa20a22 | 638 | |
1da177e4 LT |
639 | PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname)); |
640 | return 0; | |
641 | ||
642 | } | |
643 | ||
644 | /* Get the current statistics. This may be called with the card open or | |
645 | closed. */ | |
646 | static struct net_device_stats *ni5010_get_stats(struct net_device *dev) | |
647 | { | |
648 | struct ni5010_local *lp = netdev_priv(dev); | |
649 | ||
650 | PRINTK2((KERN_DEBUG "%s: entering ni5010_get_stats\n", dev->name)); | |
6aa20a22 | 651 | |
1da177e4 | 652 | if (NI5010_DEBUG) ni5010_show_registers(dev); |
6aa20a22 | 653 | |
1da177e4 LT |
654 | /* cli(); */ |
655 | /* Update the statistics from the device registers. */ | |
656 | /* We do this in the interrupt handler */ | |
657 | /* sti(); */ | |
658 | ||
659 | return &lp->stats; | |
660 | } | |
661 | ||
662 | /* Set or clear the multicast filter for this adaptor. | |
663 | num_addrs == -1 Promiscuous mode, receive all packets | |
664 | num_addrs == 0 Normal mode, clear multicast list | |
665 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do | |
666 | best-effort filtering. | |
667 | */ | |
668 | static void ni5010_set_multicast_list(struct net_device *dev) | |
669 | { | |
6aa20a22 | 670 | short ioaddr = dev->base_addr; |
1da177e4 LT |
671 | |
672 | PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name)); | |
673 | ||
674 | if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI) { | |
675 | dev->flags |= IFF_PROMISC; | |
676 | outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */ | |
677 | PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name)); | |
678 | } else if (dev->mc_list) { | |
679 | /* Sorry, multicast not supported */ | |
680 | PRINTK((KERN_DEBUG "%s: No multicast, entering broadcast mode\n", dev->name)); | |
681 | outb(RMD_BROADCAST, EDLC_RMODE); | |
682 | } else { | |
683 | PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name)); | |
684 | outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */ | |
685 | } | |
686 | } | |
687 | ||
688 | static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad) | |
689 | { | |
690 | struct ni5010_local *lp = netdev_priv(dev); | |
691 | int ioaddr = dev->base_addr; | |
692 | unsigned long flags; | |
693 | unsigned int buf_offs; | |
694 | ||
695 | PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name)); | |
6aa20a22 | 696 | |
1da177e4 LT |
697 | if (length > ETH_FRAME_LEN) { |
698 | PRINTK((KERN_WARNING "%s: packet too large, not possible\n", | |
699 | dev->name)); | |
700 | return; | |
701 | } | |
702 | ||
703 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
704 | ||
705 | if (inb(IE_ISTAT) & IS_EN_XMT) { | |
6aa20a22 | 706 | PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n", |
1da177e4 LT |
707 | dev->name)); |
708 | return; | |
709 | } | |
6aa20a22 | 710 | |
1da177e4 LT |
711 | if (NI5010_DEBUG > 3) dump_packet(buf, length); |
712 | ||
713 | buf_offs = NI5010_BUFSIZE - length - pad; | |
714 | ||
715 | spin_lock_irqsave(&lp->lock, flags); | |
716 | lp->o_pkt_size = length + pad; | |
717 | ||
718 | outb(0, EDLC_RMASK); /* Mask all receive interrupts */ | |
719 | outb(0, IE_MMODE); /* Put Xmit buffer on system bus */ | |
720 | outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */ | |
721 | ||
722 | outw(buf_offs, IE_GP); /* Point GP at start of packet */ | |
723 | outsb(IE_XBUF, buf, length); /* Put data in buffer */ | |
724 | while(pad--) | |
725 | outb(0, IE_XBUF); | |
6aa20a22 | 726 | |
1da177e4 LT |
727 | outw(buf_offs, IE_GP); /* Rewrite where packet starts */ |
728 | ||
729 | /* should work without that outb() (Crynwr used it) */ | |
730 | /*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */ | |
731 | outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */ | |
732 | outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */ | |
733 | ||
734 | spin_unlock_irqrestore(&lp->lock, flags); | |
735 | ||
736 | netif_wake_queue(dev); | |
6aa20a22 JG |
737 | |
738 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
1da177e4 LT |
739 | } |
740 | ||
741 | static void chipset_init(struct net_device *dev, int startp) | |
742 | { | |
743 | /* FIXME: Move some stuff here */ | |
744 | PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name)); | |
745 | } | |
746 | ||
747 | static void ni5010_show_registers(struct net_device *dev) | |
748 | { | |
749 | int ioaddr = dev->base_addr; | |
6aa20a22 | 750 | |
1da177e4 LT |
751 | PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT))); |
752 | PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK))); | |
753 | PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT))); | |
754 | PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK))); | |
755 | PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE))); | |
756 | PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE))); | |
757 | PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT))); | |
758 | } | |
759 | ||
760 | #ifdef MODULE | |
761 | static struct net_device *dev_ni5010; | |
762 | ||
8d3b33f6 RR |
763 | module_param(io, int, 0); |
764 | module_param(irq, int, 0); | |
1da177e4 LT |
765 | MODULE_PARM_DESC(io, "ni5010 I/O base address"); |
766 | MODULE_PARM_DESC(irq, "ni5010 IRQ number"); | |
767 | ||
5b552b16 | 768 | static int __init ni5010_init_module(void) |
1da177e4 LT |
769 | { |
770 | PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname)); | |
771 | /* | |
772 | if(io <= 0 || irq == 0){ | |
773 | printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname); | |
774 | printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname); | |
775 | return -EINVAL; | |
776 | } | |
777 | */ | |
778 | if (io <= 0){ | |
779 | printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname); | |
780 | } | |
781 | ||
782 | PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io)); | |
783 | dev_ni5010 = ni5010_probe(-1); | |
784 | if (IS_ERR(dev_ni5010)) | |
785 | return PTR_ERR(dev_ni5010); | |
786 | return 0; | |
787 | } | |
788 | ||
5b552b16 | 789 | static void __exit ni5010_cleanup_module(void) |
1da177e4 LT |
790 | { |
791 | PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname)); | |
792 | unregister_netdev(dev_ni5010); | |
793 | release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT); | |
794 | free_netdev(dev_ni5010); | |
795 | } | |
5b552b16 AM |
796 | module_init(ni5010_init_module); |
797 | module_exit(ni5010_cleanup_module); | |
1da177e4 LT |
798 | #endif /* MODULE */ |
799 | MODULE_LICENSE("GPL"); | |
800 | ||
801 | /* | |
802 | * Local variables: | |
803 | * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ni5010.c" | |
804 | * version-control: t | |
805 | * kept-new-versions: 5 | |
806 | * tab-width: 4 | |
807 | * End: | |
808 | */ |