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> | |
1da177e4 LT |
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 | ||
5b552b16 AM |
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"; | |
6aa20a22 | 70 | |
1da177e4 LT |
71 | /* bufsize_rcv == 0 means autoprobing */ |
72 | static unsigned int bufsize_rcv; | |
73 | ||
5b552b16 AM |
74 | #define JUMPERED_INTERRUPTS /* IRQ line jumpered on board */ |
75 | #undef JUMPERED_DMA /* No DMA used */ | |
1da177e4 LT |
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 { | |
1da177e4 LT |
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); | |
7d12e780 | 100 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id); |
1da177e4 LT |
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); | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
79f1bc06 AB |
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 | ||
1da177e4 LT |
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 | ||
6aa20a22 | 237 | PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n", |
1da177e4 LT |
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); | |
0795af57 | 281 | dev->dev_addr[i] = inb(IE_SAPROM); |
1da177e4 | 282 | } |
e174961c | 283 | printk("%pM ", dev->dev_addr); |
1da177e4 LT |
284 | |
285 | PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name)); | |
286 | ||
5b552b16 | 287 | #ifdef JUMPERED_INTERRUPTS |
1da177e4 LT |
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 | } | |
5b552b16 | 311 | #endif /* JUMPERED_INTERRUPTS */ |
1da177e4 LT |
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 | } | |
5b552b16 | 340 | printk("-> bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE); |
6aa20a22 | 341 | |
79f1bc06 | 342 | dev->netdev_ops = &ni5010_netdev_ops; |
1da177e4 LT |
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); | |
5b552b16 AM |
354 | if (dev->dma) |
355 | printk(" & DMA %d", dev->dma); | |
1da177e4 | 356 | printk(".\n"); |
1da177e4 LT |
357 | return 0; |
358 | out: | |
359 | release_region(dev->base_addr, NI5010_IO_EXTENT); | |
360 | return err; | |
361 | } | |
362 | ||
6aa20a22 | 363 | /* |
1da177e4 LT |
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 | |
5b552b16 | 369 | * there is a non-reboot way to recover if something goes wrong. |
1da177e4 | 370 | */ |
6aa20a22 | 371 | |
1da177e4 LT |
372 | static int ni5010_open(struct net_device *dev) |
373 | { | |
374 | int ioaddr = dev->base_addr; | |
375 | int i; | |
376 | ||
6aa20a22 JG |
377 | PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name)); |
378 | ||
a0607fd3 | 379 | if (request_irq(dev->irq, ni5010_interrupt, 0, boardname, dev)) { |
1da177e4 LT |
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 | */ | |
5b552b16 | 388 | #ifdef JUMPERED_DMA |
1da177e4 LT |
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 | } | |
5b552b16 | 394 | #endif /* JUMPERED_DMA */ |
1da177e4 LT |
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 | } | |
6aa20a22 JG |
408 | |
409 | PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name)); | |
1da177e4 | 410 | outb(0, EDLC_XMASK); /* No xmit interrupts for now */ |
6aa20a22 | 411 | outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); |
1da177e4 LT |
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 */ | |
6aa20a22 | 417 | |
1da177e4 | 418 | outb(0, EDLC_RESET); /* Un-reset the ni5010 */ |
6aa20a22 | 419 | |
1da177e4 | 420 | netif_start_queue(dev); |
6aa20a22 JG |
421 | |
422 | if (NI5010_DEBUG) ni5010_show_registers(dev); | |
1da177e4 LT |
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; | |
6aa20a22 | 431 | |
1da177e4 LT |
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; | |
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 | ||
6aa20a22 | 457 | /* |
1da177e4 LT |
458 | * Block sending |
459 | */ | |
6aa20a22 | 460 | |
1da177e4 LT |
461 | netif_stop_queue(dev); |
462 | hardware_send_packet(dev, (unsigned char *)skb->data, skb->len, length-skb->len); | |
463 | dev->trans_start = jiffies; | |
464 | dev_kfree_skb (skb); | |
6ed10654 | 465 | return NETDEV_TX_OK; |
1da177e4 LT |
466 | } |
467 | ||
6aa20a22 | 468 | /* |
1da177e4 | 469 | * The typical workload of the driver: |
6aa20a22 | 470 | * Handle the network interface interrupts. |
1da177e4 | 471 | */ |
7d12e780 | 472 | static irqreturn_t ni5010_interrupt(int irq, void *dev_id) |
1da177e4 LT |
473 | { |
474 | struct net_device *dev = dev_id; | |
475 | struct ni5010_local *lp; | |
476 | int ioaddr, status; | |
477 | int xmit_was_error = 0; | |
478 | ||
479 | PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name)); | |
480 | ||
481 | ioaddr = dev->base_addr; | |
482 | lp = netdev_priv(dev); | |
6aa20a22 | 483 | |
1da177e4 | 484 | spin_lock(&lp->lock); |
6aa20a22 | 485 | status = inb(IE_ISTAT); |
1da177e4 | 486 | PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status)); |
6aa20a22 | 487 | |
1da177e4 LT |
488 | if ((status & IS_R_INT) == 0) ni5010_rx(dev); |
489 | ||
490 | if ((status & IS_X_INT) == 0) { | |
491 | xmit_was_error = process_xmt_interrupt(dev); | |
492 | } | |
493 | ||
494 | if ((status & IS_DMA_INT) == 0) { | |
495 | PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name)); | |
496 | outb(0, IE_DMA_RST); /* Reset DMA int */ | |
497 | } | |
498 | ||
6aa20a22 JG |
499 | if (!xmit_was_error) |
500 | reset_receiver(dev); | |
1da177e4 LT |
501 | spin_unlock(&lp->lock); |
502 | return IRQ_HANDLED; | |
503 | } | |
504 | ||
505 | ||
506 | static void dump_packet(void *buf, int len) | |
507 | { | |
508 | int i; | |
6aa20a22 | 509 | |
1da177e4 LT |
510 | printk(KERN_DEBUG "Packet length = %#4x\n", len); |
511 | for (i = 0; i < len; i++){ | |
512 | if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i); | |
513 | if (i % 2 == 0) printk(" "); | |
514 | printk("%2.2x", ((unsigned char *)buf)[i]); | |
515 | if (i % 16 == 15) printk("\n"); | |
516 | } | |
517 | printk("\n"); | |
6aa20a22 | 518 | |
1da177e4 LT |
519 | return; |
520 | } | |
521 | ||
522 | /* We have a good packet, get it out of the buffer. */ | |
523 | static void ni5010_rx(struct net_device *dev) | |
524 | { | |
1da177e4 LT |
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)); | |
09f75cd7 JG |
537 | dev->stats.rx_errors++; |
538 | if (rcv_stat & RS_RUNT) dev->stats.rx_length_errors++; | |
539 | if (rcv_stat & RS_ALIGN) dev->stats.rx_frame_errors++; | |
540 | if (rcv_stat & RS_CRC_ERR) dev->stats.rx_crc_errors++; | |
541 | if (rcv_stat & RS_OFLW) dev->stats.rx_fifo_errors++; | |
1da177e4 LT |
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 | 551 | dev->name, i_pkt_size)); |
09f75cd7 JG |
552 | dev->stats.rx_errors++; |
553 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
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); | |
09f75cd7 | 561 | dev->stats.rx_dropped++; |
1da177e4 LT |
562 | return; |
563 | } | |
6aa20a22 | 564 | |
1da177e4 | 565 | skb_reserve(skb, 2); |
6aa20a22 | 566 | |
1da177e4 LT |
567 | /* Read packet into buffer */ |
568 | outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */ | |
569 | outw(0, IE_GP); /* Seek to beginning of packet */ | |
6aa20a22 JG |
570 | insb(IE_RBUF, skb_put(skb, i_pkt_size), i_pkt_size); |
571 | ||
572 | if (NI5010_DEBUG >= 4) | |
573 | dump_packet(skb->data, skb->len); | |
574 | ||
1da177e4 LT |
575 | skb->protocol = eth_type_trans(skb,dev); |
576 | netif_rx(skb); | |
09f75cd7 JG |
577 | dev->stats.rx_packets++; |
578 | dev->stats.rx_bytes += i_pkt_size; | |
1da177e4 | 579 | |
6aa20a22 | 580 | PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n", |
1da177e4 | 581 | dev->name, i_pkt_size)); |
1da177e4 LT |
582 | } |
583 | ||
584 | static int process_xmt_interrupt(struct net_device *dev) | |
585 | { | |
586 | struct ni5010_local *lp = netdev_priv(dev); | |
587 | int ioaddr = dev->base_addr; | |
588 | int xmit_stat; | |
589 | ||
590 | PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name)); | |
591 | ||
592 | xmit_stat = inb(EDLC_XSTAT); | |
593 | PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat)); | |
6aa20a22 | 594 | |
1da177e4 LT |
595 | outb(0, EDLC_XMASK); /* Disable xmit IRQ's */ |
596 | outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */ | |
6aa20a22 | 597 | |
1da177e4 | 598 | if (xmit_stat & XS_COLL){ |
6aa20a22 | 599 | PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n", |
1da177e4 LT |
600 | dev->name)); |
601 | outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP); | |
602 | /* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */ | |
603 | outb(MM_EN_XMT | MM_MUX, IE_MMODE); | |
604 | outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */ | |
09f75cd7 | 605 | dev->stats.collisions++; |
1da177e4 LT |
606 | return 1; |
607 | } | |
608 | ||
609 | /* FIXME: handle other xmt error conditions */ | |
610 | ||
09f75cd7 JG |
611 | dev->stats.tx_packets++; |
612 | dev->stats.tx_bytes += lp->o_pkt_size; | |
1da177e4 | 613 | netif_wake_queue(dev); |
6aa20a22 JG |
614 | |
615 | PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n", | |
1da177e4 LT |
616 | dev->name, lp->o_pkt_size)); |
617 | ||
618 | return 0; | |
619 | } | |
620 | ||
621 | /* The inverse routine to ni5010_open(). */ | |
622 | static int ni5010_close(struct net_device *dev) | |
623 | { | |
624 | int ioaddr = dev->base_addr; | |
625 | ||
626 | PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name)); | |
5b552b16 | 627 | #ifdef JUMPERED_INTERRUPTS |
1da177e4 LT |
628 | free_irq(dev->irq, NULL); |
629 | #endif | |
630 | /* Put card in held-RESET state */ | |
631 | outb(0, IE_MMODE); | |
632 | outb(RS_RESET, EDLC_RESET); | |
633 | ||
634 | netif_stop_queue(dev); | |
6aa20a22 | 635 | |
1da177e4 LT |
636 | PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname)); |
637 | return 0; | |
638 | ||
639 | } | |
640 | ||
1da177e4 LT |
641 | /* Set or clear the multicast filter for this adaptor. |
642 | num_addrs == -1 Promiscuous mode, receive all packets | |
643 | num_addrs == 0 Normal mode, clear multicast list | |
644 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do | |
645 | best-effort filtering. | |
646 | */ | |
647 | static void ni5010_set_multicast_list(struct net_device *dev) | |
648 | { | |
6aa20a22 | 649 | short ioaddr = dev->base_addr; |
1da177e4 LT |
650 | |
651 | PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name)); | |
652 | ||
f9dcbcc9 JP |
653 | if (dev->flags & IFF_PROMISC || dev->flags & IFF_ALLMULTI || |
654 | !netdev_mc_empty(dev)) { | |
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"); |