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 { | |
1da177e4 LT |
92 | int o_pkt_size; |
93 | spinlock_t lock; | |
94 | }; | |
95 | ||
96 | /* Index to functions, as function prototypes. */ | |
97 | ||
98 | static int ni5010_probe1(struct net_device *dev, int ioaddr); | |
99 | static int ni5010_open(struct net_device *dev); | |
100 | static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev); | |
7d12e780 | 101 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id); |
1da177e4 LT |
102 | static void ni5010_rx(struct net_device *dev); |
103 | static void ni5010_timeout(struct net_device *dev); | |
104 | static int ni5010_close(struct net_device *dev); | |
1da177e4 LT |
105 | static void ni5010_set_multicast_list(struct net_device *dev); |
106 | static void reset_receiver(struct net_device *dev); | |
107 | ||
108 | static int process_xmt_interrupt(struct net_device *dev); | |
109 | #define tx_done(dev) 1 | |
110 | static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad); | |
111 | static void chipset_init(struct net_device *dev, int startp); | |
112 | static void dump_packet(void *buf, int len); | |
113 | static void ni5010_show_registers(struct net_device *dev); | |
114 | ||
115 | static int io; | |
116 | static int irq; | |
117 | ||
118 | struct net_device * __init ni5010_probe(int unit) | |
119 | { | |
120 | struct net_device *dev = alloc_etherdev(sizeof(struct ni5010_local)); | |
121 | int *port; | |
122 | int err = 0; | |
123 | ||
124 | if (!dev) | |
125 | return ERR_PTR(-ENOMEM); | |
126 | ||
127 | if (unit >= 0) { | |
128 | sprintf(dev->name, "eth%d", unit); | |
129 | netdev_boot_setup_check(dev); | |
130 | io = dev->base_addr; | |
131 | irq = dev->irq; | |
132 | } | |
133 | ||
134 | PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name)); | |
135 | ||
1da177e4 LT |
136 | if (io > 0x1ff) { /* Check a single specified location. */ |
137 | err = ni5010_probe1(dev, io); | |
138 | } else if (io != 0) { /* Don't probe at all. */ | |
139 | err = -ENXIO; | |
140 | } else { | |
141 | #ifdef FULL_IODETECT | |
142 | for (io=0x200; io<0x400 && ni5010_probe1(dev, io) ; io+=0x20) | |
143 | ; | |
144 | if (io == 0x400) | |
145 | err = -ENODEV; | |
146 | ||
147 | #else | |
148 | for (port = ports; *port && ni5010_probe1(dev, *port); port++) | |
149 | ; | |
150 | if (!*port) | |
151 | err = -ENODEV; | |
152 | #endif /* FULL_IODETECT */ | |
153 | } | |
154 | if (err) | |
155 | goto out; | |
156 | err = register_netdev(dev); | |
157 | if (err) | |
158 | goto out1; | |
159 | return dev; | |
160 | out1: | |
161 | release_region(dev->base_addr, NI5010_IO_EXTENT); | |
162 | out: | |
163 | free_netdev(dev); | |
164 | return ERR_PTR(err); | |
165 | } | |
166 | ||
167 | static inline int rd_port(int ioaddr) | |
168 | { | |
169 | inb(IE_RBUF); | |
170 | return inb(IE_SAPROM); | |
171 | } | |
172 | ||
173 | static void __init trigger_irq(int ioaddr) | |
174 | { | |
175 | outb(0x00, EDLC_RESET); /* Clear EDLC hold RESET state */ | |
176 | outb(0x00, IE_RESET); /* Board reset */ | |
177 | outb(0x00, EDLC_XMASK); /* Disable all Xmt interrupts */ | |
178 | outb(0x00, EDLC_RMASK); /* Disable all Rcv interrupt */ | |
179 | outb(0xff, EDLC_XCLR); /* Clear all pending Xmt interrupts */ | |
180 | outb(0xff, EDLC_RCLR); /* Clear all pending Rcv interrupts */ | |
181 | /* | |
182 | * Transmit packet mode: Ignore parity, Power xcvr, | |
183 | * Enable loopback | |
184 | */ | |
185 | outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); | |
186 | outb(RMD_BROADCAST, EDLC_RMODE); /* Receive normal&broadcast */ | |
187 | outb(XM_ALL, EDLC_XMASK); /* Enable all Xmt interrupts */ | |
188 | udelay(50); /* FIXME: Necessary? */ | |
189 | outb(MM_EN_XMT|MM_MUX, IE_MMODE); /* Start transmission */ | |
190 | } | |
191 | ||
79f1bc06 AB |
192 | static const struct net_device_ops ni5010_netdev_ops = { |
193 | .ndo_open = ni5010_open, | |
194 | .ndo_stop = ni5010_close, | |
195 | .ndo_start_xmit = ni5010_send_packet, | |
196 | .ndo_set_multicast_list = ni5010_set_multicast_list, | |
197 | .ndo_tx_timeout = ni5010_timeout, | |
198 | .ndo_validate_addr = eth_validate_addr, | |
199 | .ndo_set_mac_address = eth_mac_addr, | |
200 | .ndo_change_mtu = eth_change_mtu, | |
201 | }; | |
202 | ||
1da177e4 LT |
203 | /* |
204 | * This is the real probe routine. Linux has a history of friendly device | |
205 | * probes on the ISA bus. A good device probes avoids doing writes, and | |
206 | * verifies that the correct device exists and functions. | |
207 | */ | |
208 | ||
209 | static int __init ni5010_probe1(struct net_device *dev, int ioaddr) | |
210 | { | |
211 | static unsigned version_printed; | |
212 | struct ni5010_local *lp; | |
213 | int i; | |
214 | unsigned int data = 0; | |
215 | int boguscount = 40; | |
216 | int err = -ENODEV; | |
217 | ||
218 | dev->base_addr = ioaddr; | |
219 | dev->irq = irq; | |
220 | ||
221 | if (!request_region(ioaddr, NI5010_IO_EXTENT, boardname)) | |
222 | return -EBUSY; | |
223 | ||
224 | /* | |
225 | * This is no "official" probe method, I've rather tested which | |
226 | * probe works best with my seven NI5010 cards | |
227 | * (they have very different serial numbers) | |
228 | * Suggestions or failure reports are very, very welcome ! | |
229 | * But I think it is a relatively good probe method | |
230 | * since it doesn't use any "outb" | |
231 | * It should be nearly 100% reliable ! | |
232 | * well-known WARNING: this probe method (like many others) | |
233 | * will hang the system if a NE2000 card region is probed ! | |
234 | * | |
235 | * - Andreas | |
236 | */ | |
237 | ||
6aa20a22 | 238 | PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n", |
1da177e4 LT |
239 | dev->name, ioaddr)); |
240 | ||
241 | if (inb(ioaddr+0) == 0xff) | |
242 | goto out; | |
243 | ||
244 | while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) & | |
245 | rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff) | |
246 | { | |
247 | if (boguscount-- == 0) | |
248 | goto out; | |
249 | } | |
250 | ||
251 | PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name)); | |
252 | ||
253 | for (i=0; i<32; i++) | |
254 | if ( (data = rd_port(ioaddr)) != 0xff) break; | |
255 | if (data==0xff) | |
256 | goto out; | |
257 | ||
258 | PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name)); | |
259 | ||
260 | if ((data != SA_ADDR0) || (rd_port(ioaddr) != SA_ADDR1) || | |
261 | (rd_port(ioaddr) != SA_ADDR2)) | |
262 | goto out; | |
263 | ||
264 | for (i=0; i<4; i++) | |
265 | rd_port(ioaddr); | |
266 | ||
267 | if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) || | |
268 | (rd_port(ioaddr) != NI5010_MAGICVAL2) ) | |
269 | goto out; | |
270 | ||
271 | PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name)); | |
272 | ||
273 | if (NI5010_DEBUG && version_printed++ == 0) | |
274 | printk(KERN_INFO "%s", version); | |
275 | ||
276 | printk("NI5010 ethercard probe at 0x%x: ", ioaddr); | |
277 | ||
278 | dev->base_addr = ioaddr; | |
279 | ||
280 | for (i=0; i<6; i++) { | |
281 | outw(i, IE_GP); | |
0795af57 | 282 | dev->dev_addr[i] = inb(IE_SAPROM); |
1da177e4 | 283 | } |
e174961c | 284 | printk("%pM ", dev->dev_addr); |
1da177e4 LT |
285 | |
286 | PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name)); | |
287 | ||
5b552b16 | 288 | #ifdef JUMPERED_INTERRUPTS |
1da177e4 LT |
289 | if (dev->irq == 0xff) |
290 | ; | |
291 | else if (dev->irq < 2) { | |
292 | unsigned long irq_mask; | |
293 | ||
294 | PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name)); | |
295 | ||
296 | irq_mask = probe_irq_on(); | |
297 | trigger_irq(ioaddr); | |
298 | mdelay(20); | |
299 | dev->irq = probe_irq_off(irq_mask); | |
300 | ||
301 | PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name)); | |
302 | ||
303 | if (dev->irq == 0) { | |
304 | err = -EAGAIN; | |
305 | printk(KERN_WARNING "%s: no IRQ found!\n", dev->name); | |
306 | goto out; | |
307 | } | |
308 | PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name)); | |
309 | } else if (dev->irq == 2) { | |
310 | dev->irq = 9; | |
311 | } | |
5b552b16 | 312 | #endif /* JUMPERED_INTERRUPTS */ |
1da177e4 LT |
313 | PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name)); |
314 | ||
315 | /* DMA is not supported (yet?), so no use detecting it */ | |
316 | lp = netdev_priv(dev); | |
317 | ||
318 | spin_lock_init(&lp->lock); | |
319 | ||
320 | PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name)); | |
321 | ||
322 | /* get the size of the onboard receive buffer | |
323 | * higher addresses than bufsize are wrapped into real buffer | |
324 | * i.e. data for offs. 0x801 is written to 0x1 with a 2K onboard buffer | |
325 | */ | |
326 | if (!bufsize_rcv) { | |
327 | outb(1, IE_MMODE); /* Put Rcv buffer on system bus */ | |
328 | outw(0, IE_GP); /* Point GP at start of packet */ | |
329 | outb(0, IE_RBUF); /* set buffer byte 0 to 0 */ | |
330 | for (i = 1; i < 0xff; i++) { | |
331 | outw(i << 8, IE_GP); /* Point GP at packet size to be tested */ | |
332 | outb(i, IE_RBUF); | |
333 | outw(0x0, IE_GP); /* Point GP at start of packet */ | |
334 | data = inb(IE_RBUF); | |
335 | if (data == i) break; | |
336 | } | |
337 | bufsize_rcv = i << 8; | |
338 | outw(0, IE_GP); /* Point GP at start of packet */ | |
339 | outb(0, IE_RBUF); /* set buffer byte 0 to 0 again */ | |
340 | } | |
5b552b16 | 341 | printk("-> bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE); |
6aa20a22 | 342 | |
79f1bc06 | 343 | dev->netdev_ops = &ni5010_netdev_ops; |
1da177e4 LT |
344 | dev->watchdog_timeo = HZ/20; |
345 | ||
346 | dev->flags &= ~IFF_MULTICAST; /* Multicast doesn't work */ | |
347 | ||
348 | /* Shut up the ni5010 */ | |
349 | outb(0, EDLC_RMASK); /* Mask all receive interrupts */ | |
350 | outb(0, EDLC_XMASK); /* Mask all xmit interrupts */ | |
351 | outb(0xff, EDLC_RCLR); /* Kill all pending rcv interrupts */ | |
352 | outb(0xff, EDLC_XCLR); /* Kill all pending xmt interrupts */ | |
353 | ||
354 | printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq); | |
5b552b16 AM |
355 | if (dev->dma) |
356 | printk(" & DMA %d", dev->dma); | |
1da177e4 | 357 | printk(".\n"); |
1da177e4 LT |
358 | return 0; |
359 | out: | |
360 | release_region(dev->base_addr, NI5010_IO_EXTENT); | |
361 | return err; | |
362 | } | |
363 | ||
6aa20a22 | 364 | /* |
1da177e4 LT |
365 | * Open/initialize the board. This is called (in the current kernel) |
366 | * sometime after booting when the 'ifconfig' program is run. | |
367 | * | |
368 | * This routine should set everything up anew at each open, even | |
369 | * registers that "should" only need to be set once at boot, so that | |
5b552b16 | 370 | * there is a non-reboot way to recover if something goes wrong. |
1da177e4 | 371 | */ |
6aa20a22 | 372 | |
1da177e4 LT |
373 | static int ni5010_open(struct net_device *dev) |
374 | { | |
375 | int ioaddr = dev->base_addr; | |
376 | int i; | |
377 | ||
6aa20a22 JG |
378 | PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name)); |
379 | ||
1da177e4 LT |
380 | if (request_irq(dev->irq, &ni5010_interrupt, 0, boardname, dev)) { |
381 | printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq); | |
382 | return -EAGAIN; | |
383 | } | |
384 | PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name)); | |
385 | /* | |
386 | * Always allocate the DMA channel after the IRQ, | |
387 | * and clean up on failure. | |
388 | */ | |
5b552b16 | 389 | #ifdef JUMPERED_DMA |
1da177e4 LT |
390 | if (request_dma(dev->dma, cardname)) { |
391 | printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma); | |
392 | free_irq(dev->irq, NULL); | |
393 | return -EAGAIN; | |
394 | } | |
5b552b16 | 395 | #endif /* JUMPERED_DMA */ |
1da177e4 LT |
396 | |
397 | PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name)); | |
398 | /* Reset the hardware here. Don't forget to set the station address. */ | |
399 | ||
400 | outb(RS_RESET, EDLC_RESET); /* Hold up EDLC_RESET while configing board */ | |
401 | outb(0, IE_RESET); /* Hardware reset of ni5010 board */ | |
402 | outb(XMD_LBC, EDLC_XMODE); /* Only loopback xmits */ | |
403 | ||
404 | PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name)); | |
405 | /* Set the station address */ | |
406 | for(i = 0;i < 6; i++) { | |
407 | outb(dev->dev_addr[i], EDLC_ADDR + i); | |
408 | } | |
6aa20a22 JG |
409 | |
410 | PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name)); | |
1da177e4 | 411 | outb(0, EDLC_XMASK); /* No xmit interrupts for now */ |
6aa20a22 | 412 | outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); |
1da177e4 LT |
413 | /* Normal packet xmit mode */ |
414 | outb(0xff, EDLC_XCLR); /* Clear all pending xmit interrupts */ | |
415 | outb(RMD_BROADCAST, EDLC_RMODE); | |
416 | /* Receive broadcast and normal packets */ | |
417 | reset_receiver(dev); /* Ready ni5010 for receiving packets */ | |
6aa20a22 | 418 | |
1da177e4 | 419 | outb(0, EDLC_RESET); /* Un-reset the ni5010 */ |
6aa20a22 | 420 | |
1da177e4 | 421 | netif_start_queue(dev); |
6aa20a22 JG |
422 | |
423 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
1da177e4 LT |
424 | |
425 | PRINTK((KERN_DEBUG "%s: open successful\n", dev->name)); | |
426 | return 0; | |
427 | } | |
428 | ||
429 | static void reset_receiver(struct net_device *dev) | |
430 | { | |
431 | int ioaddr = dev->base_addr; | |
6aa20a22 | 432 | |
1da177e4 LT |
433 | PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name)); |
434 | outw(0, IE_GP); /* Receive packet at start of buffer */ | |
435 | outb(0xff, EDLC_RCLR); /* Clear all pending rcv interrupts */ | |
436 | outb(0, IE_MMODE); /* Put EDLC to rcv buffer */ | |
437 | outb(MM_EN_RCV, IE_MMODE); /* Enable rcv */ | |
438 | outb(0xff, EDLC_RMASK); /* Enable all rcv interrupts */ | |
439 | } | |
440 | ||
441 | static void ni5010_timeout(struct net_device *dev) | |
442 | { | |
443 | printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, | |
444 | tx_done(dev) ? "IRQ conflict" : "network cable problem"); | |
445 | /* Try to restart the adaptor. */ | |
446 | /* FIXME: Give it a real kick here */ | |
447 | chipset_init(dev, 1); | |
448 | dev->trans_start = jiffies; | |
449 | netif_wake_queue(dev); | |
450 | } | |
451 | ||
452 | static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev) | |
453 | { | |
454 | int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; | |
455 | ||
456 | PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name)); | |
457 | ||
6aa20a22 | 458 | /* |
1da177e4 LT |
459 | * Block sending |
460 | */ | |
6aa20a22 | 461 | |
1da177e4 LT |
462 | netif_stop_queue(dev); |
463 | hardware_send_packet(dev, (unsigned char *)skb->data, skb->len, length-skb->len); | |
464 | dev->trans_start = jiffies; | |
465 | dev_kfree_skb (skb); | |
6ed10654 | 466 | return NETDEV_TX_OK; |
1da177e4 LT |
467 | } |
468 | ||
6aa20a22 | 469 | /* |
1da177e4 | 470 | * The typical workload of the driver: |
6aa20a22 | 471 | * Handle the network interface interrupts. |
1da177e4 | 472 | */ |
7d12e780 | 473 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id) |
1da177e4 LT |
474 | { |
475 | struct net_device *dev = dev_id; | |
476 | struct ni5010_local *lp; | |
477 | int ioaddr, status; | |
478 | int xmit_was_error = 0; | |
479 | ||
480 | PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name)); | |
481 | ||
482 | ioaddr = dev->base_addr; | |
483 | lp = netdev_priv(dev); | |
6aa20a22 | 484 | |
1da177e4 | 485 | spin_lock(&lp->lock); |
6aa20a22 | 486 | status = inb(IE_ISTAT); |
1da177e4 | 487 | PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status)); |
6aa20a22 | 488 | |
1da177e4 LT |
489 | if ((status & IS_R_INT) == 0) ni5010_rx(dev); |
490 | ||
491 | if ((status & IS_X_INT) == 0) { | |
492 | xmit_was_error = process_xmt_interrupt(dev); | |
493 | } | |
494 | ||
495 | if ((status & IS_DMA_INT) == 0) { | |
496 | PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name)); | |
497 | outb(0, IE_DMA_RST); /* Reset DMA int */ | |
498 | } | |
499 | ||
6aa20a22 JG |
500 | if (!xmit_was_error) |
501 | reset_receiver(dev); | |
1da177e4 LT |
502 | spin_unlock(&lp->lock); |
503 | return IRQ_HANDLED; | |
504 | } | |
505 | ||
506 | ||
507 | static void dump_packet(void *buf, int len) | |
508 | { | |
509 | int i; | |
6aa20a22 | 510 | |
1da177e4 LT |
511 | printk(KERN_DEBUG "Packet length = %#4x\n", len); |
512 | for (i = 0; i < len; i++){ | |
513 | if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i); | |
514 | if (i % 2 == 0) printk(" "); | |
515 | printk("%2.2x", ((unsigned char *)buf)[i]); | |
516 | if (i % 16 == 15) printk("\n"); | |
517 | } | |
518 | printk("\n"); | |
6aa20a22 | 519 | |
1da177e4 LT |
520 | return; |
521 | } | |
522 | ||
523 | /* We have a good packet, get it out of the buffer. */ | |
524 | static void ni5010_rx(struct net_device *dev) | |
525 | { | |
1da177e4 LT |
526 | int ioaddr = dev->base_addr; |
527 | unsigned char rcv_stat; | |
528 | struct sk_buff *skb; | |
529 | int i_pkt_size; | |
6aa20a22 JG |
530 | |
531 | PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name)); | |
532 | ||
1da177e4 | 533 | rcv_stat = inb(EDLC_RSTAT); |
6aa20a22 JG |
534 | PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat)); |
535 | ||
1da177e4 LT |
536 | if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) { |
537 | PRINTK((KERN_INFO "%s: receive error.\n", dev->name)); | |
09f75cd7 JG |
538 | dev->stats.rx_errors++; |
539 | if (rcv_stat & RS_RUNT) dev->stats.rx_length_errors++; | |
540 | if (rcv_stat & RS_ALIGN) dev->stats.rx_frame_errors++; | |
541 | if (rcv_stat & RS_CRC_ERR) dev->stats.rx_crc_errors++; | |
542 | if (rcv_stat & RS_OFLW) dev->stats.rx_fifo_errors++; | |
1da177e4 LT |
543 | outb(0xff, EDLC_RCLR); /* Clear the interrupt */ |
544 | return; | |
545 | } | |
6aa20a22 | 546 | |
1da177e4 LT |
547 | outb(0xff, EDLC_RCLR); /* Clear the interrupt */ |
548 | ||
549 | i_pkt_size = inw(IE_RCNT); | |
550 | if (i_pkt_size > ETH_FRAME_LEN || i_pkt_size < 10 ) { | |
6aa20a22 | 551 | PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n", |
1da177e4 | 552 | dev->name, i_pkt_size)); |
09f75cd7 JG |
553 | dev->stats.rx_errors++; |
554 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
555 | return; |
556 | } | |
557 | ||
558 | /* Malloc up new buffer. */ | |
559 | skb = dev_alloc_skb(i_pkt_size + 3); | |
560 | if (skb == NULL) { | |
561 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name); | |
09f75cd7 | 562 | dev->stats.rx_dropped++; |
1da177e4 LT |
563 | return; |
564 | } | |
6aa20a22 | 565 | |
1da177e4 | 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); | |
09f75cd7 JG |
578 | dev->stats.rx_packets++; |
579 | dev->stats.rx_bytes += i_pkt_size; | |
1da177e4 | 580 | |
6aa20a22 | 581 | PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n", |
1da177e4 | 582 | dev->name, i_pkt_size)); |
1da177e4 LT |
583 | } |
584 | ||
585 | static int process_xmt_interrupt(struct net_device *dev) | |
586 | { | |
587 | struct ni5010_local *lp = netdev_priv(dev); | |
588 | int ioaddr = dev->base_addr; | |
589 | int xmit_stat; | |
590 | ||
591 | PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name)); | |
592 | ||
593 | xmit_stat = inb(EDLC_XSTAT); | |
594 | PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat)); | |
6aa20a22 | 595 | |
1da177e4 LT |
596 | outb(0, EDLC_XMASK); /* Disable xmit IRQ's */ |
597 | outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */ | |
6aa20a22 | 598 | |
1da177e4 | 599 | if (xmit_stat & XS_COLL){ |
6aa20a22 | 600 | PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n", |
1da177e4 LT |
601 | dev->name)); |
602 | outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP); | |
603 | /* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */ | |
604 | outb(MM_EN_XMT | MM_MUX, IE_MMODE); | |
605 | outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */ | |
09f75cd7 | 606 | dev->stats.collisions++; |
1da177e4 LT |
607 | return 1; |
608 | } | |
609 | ||
610 | /* FIXME: handle other xmt error conditions */ | |
611 | ||
09f75cd7 JG |
612 | dev->stats.tx_packets++; |
613 | dev->stats.tx_bytes += lp->o_pkt_size; | |
1da177e4 | 614 | netif_wake_queue(dev); |
6aa20a22 JG |
615 | |
616 | PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n", | |
1da177e4 LT |
617 | dev->name, lp->o_pkt_size)); |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
622 | /* The inverse routine to ni5010_open(). */ | |
623 | static int ni5010_close(struct net_device *dev) | |
624 | { | |
625 | int ioaddr = dev->base_addr; | |
626 | ||
627 | PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name)); | |
5b552b16 | 628 | #ifdef JUMPERED_INTERRUPTS |
1da177e4 LT |
629 | free_irq(dev->irq, NULL); |
630 | #endif | |
631 | /* Put card in held-RESET state */ | |
632 | outb(0, IE_MMODE); | |
633 | outb(RS_RESET, EDLC_RESET); | |
634 | ||
635 | netif_stop_queue(dev); | |
6aa20a22 | 636 | |
1da177e4 LT |
637 | PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname)); |
638 | return 0; | |
639 | ||
640 | } | |
641 | ||
1da177e4 LT |
642 | /* Set or clear the multicast filter for this adaptor. |
643 | num_addrs == -1 Promiscuous mode, receive all packets | |
644 | num_addrs == 0 Normal mode, clear multicast list | |
645 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do | |
646 | best-effort filtering. | |
647 | */ | |
648 | static void ni5010_set_multicast_list(struct net_device *dev) | |
649 | { | |
6aa20a22 | 650 | short ioaddr = dev->base_addr; |
1da177e4 LT |
651 | |
652 | PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name)); | |
653 | ||
b947dd4b | 654 | if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI || dev->mc_list) { |
1da177e4 LT |
655 | outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */ |
656 | PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name)); | |
1da177e4 LT |
657 | } else { |
658 | PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name)); | |
659 | outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */ | |
660 | } | |
661 | } | |
662 | ||
663 | static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad) | |
664 | { | |
665 | struct ni5010_local *lp = netdev_priv(dev); | |
666 | int ioaddr = dev->base_addr; | |
667 | unsigned long flags; | |
668 | unsigned int buf_offs; | |
669 | ||
670 | PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name)); | |
6aa20a22 | 671 | |
1da177e4 LT |
672 | if (length > ETH_FRAME_LEN) { |
673 | PRINTK((KERN_WARNING "%s: packet too large, not possible\n", | |
674 | dev->name)); | |
675 | return; | |
676 | } | |
677 | ||
678 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
679 | ||
680 | if (inb(IE_ISTAT) & IS_EN_XMT) { | |
6aa20a22 | 681 | PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n", |
1da177e4 LT |
682 | dev->name)); |
683 | return; | |
684 | } | |
6aa20a22 | 685 | |
1da177e4 LT |
686 | if (NI5010_DEBUG > 3) dump_packet(buf, length); |
687 | ||
688 | buf_offs = NI5010_BUFSIZE - length - pad; | |
689 | ||
690 | spin_lock_irqsave(&lp->lock, flags); | |
691 | lp->o_pkt_size = length + pad; | |
692 | ||
693 | outb(0, EDLC_RMASK); /* Mask all receive interrupts */ | |
694 | outb(0, IE_MMODE); /* Put Xmit buffer on system bus */ | |
695 | outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */ | |
696 | ||
697 | outw(buf_offs, IE_GP); /* Point GP at start of packet */ | |
698 | outsb(IE_XBUF, buf, length); /* Put data in buffer */ | |
699 | while(pad--) | |
700 | outb(0, IE_XBUF); | |
6aa20a22 | 701 | |
1da177e4 LT |
702 | outw(buf_offs, IE_GP); /* Rewrite where packet starts */ |
703 | ||
704 | /* should work without that outb() (Crynwr used it) */ | |
705 | /*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */ | |
706 | outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */ | |
707 | outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */ | |
708 | ||
709 | spin_unlock_irqrestore(&lp->lock, flags); | |
710 | ||
711 | netif_wake_queue(dev); | |
6aa20a22 JG |
712 | |
713 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
1da177e4 LT |
714 | } |
715 | ||
716 | static void chipset_init(struct net_device *dev, int startp) | |
717 | { | |
718 | /* FIXME: Move some stuff here */ | |
719 | PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name)); | |
720 | } | |
721 | ||
722 | static void ni5010_show_registers(struct net_device *dev) | |
723 | { | |
724 | int ioaddr = dev->base_addr; | |
6aa20a22 | 725 | |
1da177e4 LT |
726 | PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT))); |
727 | PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK))); | |
728 | PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT))); | |
729 | PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK))); | |
730 | PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE))); | |
731 | PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE))); | |
732 | PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT))); | |
733 | } | |
734 | ||
735 | #ifdef MODULE | |
736 | static struct net_device *dev_ni5010; | |
737 | ||
8d3b33f6 RR |
738 | module_param(io, int, 0); |
739 | module_param(irq, int, 0); | |
1da177e4 LT |
740 | MODULE_PARM_DESC(io, "ni5010 I/O base address"); |
741 | MODULE_PARM_DESC(irq, "ni5010 IRQ number"); | |
742 | ||
5b552b16 | 743 | static int __init ni5010_init_module(void) |
1da177e4 LT |
744 | { |
745 | PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname)); | |
746 | /* | |
747 | if(io <= 0 || irq == 0){ | |
748 | printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname); | |
749 | printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname); | |
750 | return -EINVAL; | |
751 | } | |
752 | */ | |
753 | if (io <= 0){ | |
754 | printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname); | |
755 | } | |
756 | ||
757 | PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io)); | |
758 | dev_ni5010 = ni5010_probe(-1); | |
759 | if (IS_ERR(dev_ni5010)) | |
760 | return PTR_ERR(dev_ni5010); | |
761 | return 0; | |
762 | } | |
763 | ||
5b552b16 | 764 | static void __exit ni5010_cleanup_module(void) |
1da177e4 LT |
765 | { |
766 | PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname)); | |
767 | unregister_netdev(dev_ni5010); | |
768 | release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT); | |
769 | free_netdev(dev_ni5010); | |
770 | } | |
5b552b16 AM |
771 | module_init(ni5010_init_module); |
772 | module_exit(ni5010_cleanup_module); | |
1da177e4 LT |
773 | #endif /* MODULE */ |
774 | MODULE_LICENSE("GPL"); |