blob: 3d5b4232f65f36caeb54091c3a187d673cc2134c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* ni5010.c: A network driver for the MiCom-Interlan NI5010 ethercard.
2 *
Andreas Mohr5b552b12006-06-30 02:25:07 -07003 * Copyright 1996,1997,2006 Jan-Pascal van Best and Andreas Mohr.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
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:
Andreas Mohr5b552b12006-06-30 02:25:07 -07009 * janpascal@vanbest.org andi@lisas.de
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 *
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)
Andreas Mohr5b552b12006-06-30 02:25:07 -070025 * 060611 v1.02: slight cleanup: email addresses, driver modernization.
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 * Bugs:
Andreas Mohr5b552b12006-06-30 02:25:07 -070027 * - not SMP-safe (no locking of I/O accesses)
Linus Torvalds1da177e2005-04-16 15:20:36 -070028 * - 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!)
Andreas Mohr5b552b12006-06-30 02:25:07 -070038 * Implement DMA (Again, is this useful? Some docs say DMA is
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 * slower than programmed I/O)
40 *
41 * Compile with:
42 * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ \
Jeff Garzik6aa20a22006-09-13 13:24:59 -040043 * -DMODULE -c ni5010.c
Linus Torvalds1da177e2005-04-16 15:20:36 -070044 *
45 * Insert with e.g.:
Andreas Mohr5b552b12006-06-30 02:25:07 -070046 * insmod ni5010.ko io=0x300 irq=5
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 */
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
Andreas Mohr5b552b12006-06-30 02:25:07 -070068static const char boardname[] = "NI5010";
69static char version[] __initdata =
70 "ni5010.c: v1.02 20060611 Jan-Pascal van Best and Andreas Mohr\n";
Jeff Garzik6aa20a22006-09-13 13:24:59 -040071
Linus Torvalds1da177e2005-04-16 15:20:36 -070072/* bufsize_rcv == 0 means autoprobing */
73static unsigned int bufsize_rcv;
74
Andreas Mohr5b552b12006-06-30 02:25:07 -070075#define JUMPERED_INTERRUPTS /* IRQ line jumpered on board */
76#undef JUMPERED_DMA /* No DMA used */
Linus Torvalds1da177e2005-04-16 15:20:36 -070077#undef FULL_IODETECT /* Only detect in portlist */
78
79#ifndef FULL_IODETECT
80/* A zero-terminated list of I/O addresses to be probed. */
81static 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. */
91struct 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
99static int ni5010_probe1(struct net_device *dev, int ioaddr);
100static int ni5010_open(struct net_device *dev);
101static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev);
David Howells7d12e782006-10-05 14:55:46 +0100102static irqreturn_t ni5010_interrupt(int irq, void *dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103static void ni5010_rx(struct net_device *dev);
104static void ni5010_timeout(struct net_device *dev);
105static int ni5010_close(struct net_device *dev);
106static struct net_device_stats *ni5010_get_stats(struct net_device *dev);
107static void ni5010_set_multicast_list(struct net_device *dev);
108static void reset_receiver(struct net_device *dev);
109
110static int process_xmt_interrupt(struct net_device *dev);
111#define tx_done(dev) 1
112static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad);
113static void chipset_init(struct net_device *dev, int startp);
114static void dump_packet(void *buf, int len);
115static void ni5010_show_registers(struct net_device *dev);
116
117static int io;
118static int irq;
119
120struct 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;
164out1:
165 release_region(dev->base_addr, NI5010_IO_EXTENT);
166out:
167 free_netdev(dev);
168 return ERR_PTR(err);
169}
170
171static inline int rd_port(int ioaddr)
172{
173 inb(IE_RBUF);
174 return inb(IE_SAPROM);
175}
176
177static 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
202static 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
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400231 PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 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
Andreas Mohr5b552b12006-06-30 02:25:07 -0700280#ifdef JUMPERED_INTERRUPTS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 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 }
Andreas Mohr5b552b12006-06-30 02:25:07 -0700304#endif /* JUMPERED_INTERRUPTS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 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 }
Andreas Mohr5b552b12006-06-30 02:25:07 -0700333 printk("-> bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 memset(dev->priv, 0, sizeof(struct ni5010_local));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400335
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 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);
Andreas Mohr5b552b12006-06-30 02:25:07 -0700353 if (dev->dma)
354 printk(" & DMA %d", dev->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 printk(".\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 return 0;
357out:
358 release_region(dev->base_addr, NI5010_IO_EXTENT);
359 return err;
360}
361
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400362/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 * 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
Andreas Mohr5b552b12006-06-30 02:25:07 -0700368 * there is a non-reboot way to recover if something goes wrong.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400370
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371static int ni5010_open(struct net_device *dev)
372{
373 int ioaddr = dev->base_addr;
374 int i;
375
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400376 PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name));
377
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 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 */
Andreas Mohr5b552b12006-06-30 02:25:07 -0700387#ifdef JUMPERED_DMA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 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 }
Andreas Mohr5b552b12006-06-30 02:25:07 -0700393#endif /* JUMPERED_DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394
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 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400407
408 PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 outb(0, EDLC_XMASK); /* No xmit interrupts for now */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400410 outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 /* 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 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400416
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 outb(0, EDLC_RESET); /* Un-reset the ni5010 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400418
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 netif_start_queue(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400420
421 if (NI5010_DEBUG) ni5010_show_registers(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
423 PRINTK((KERN_DEBUG "%s: open successful\n", dev->name));
424 return 0;
425}
426
427static void reset_receiver(struct net_device *dev)
428{
429 int ioaddr = dev->base_addr;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400430
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 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
439static 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
450static 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
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400456 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 * Block sending
458 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400459
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 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
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400467/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 * The typical workload of the driver:
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400469 * Handle the network interface interrupts.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 */
David Howells7d12e782006-10-05 14:55:46 +0100471static irqreturn_t ni5010_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472{
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);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400482
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 spin_lock(&lp->lock);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400484 status = inb(IE_ISTAT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400486
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 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
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400498 if (!xmit_was_error)
499 reset_receiver(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 spin_unlock(&lp->lock);
501 return IRQ_HANDLED;
502}
503
504
505static void dump_packet(void *buf, int len)
506{
507 int i;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400508
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 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");
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400517
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 return;
519}
520
521/* We have a good packet, get it out of the buffer. */
522static 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;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400529
530 PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name));
531
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 rcv_stat = inb(EDLC_RSTAT);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400533 PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat));
534
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 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 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400545
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 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 ) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400550 PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 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 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400564
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 skb_reserve(skb, 2);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400566
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 /* 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 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400570 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 skb->protocol = eth_type_trans(skb,dev);
576 netif_rx(skb);
577 dev->last_rx = jiffies;
578 lp->stats.rx_packets++;
579 lp->stats.rx_bytes += i_pkt_size;
580
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400581 PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 dev->name, i_pkt_size));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400583
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584}
585
586static int process_xmt_interrupt(struct net_device *dev)
587{
588 struct ni5010_local *lp = netdev_priv(dev);
589 int ioaddr = dev->base_addr;
590 int xmit_stat;
591
592 PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name));
593
594 xmit_stat = inb(EDLC_XSTAT);
595 PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400596
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 outb(0, EDLC_XMASK); /* Disable xmit IRQ's */
598 outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400599
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600 if (xmit_stat & XS_COLL){
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400601 PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 dev->name));
603 outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP);
604 /* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */
605 outb(MM_EN_XMT | MM_MUX, IE_MMODE);
606 outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */
607 lp->stats.collisions++;
608 return 1;
609 }
610
611 /* FIXME: handle other xmt error conditions */
612
613 lp->stats.tx_packets++;
614 lp->stats.tx_bytes += lp->o_pkt_size;
615 netif_wake_queue(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400616
617 PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 dev->name, lp->o_pkt_size));
619
620 return 0;
621}
622
623/* The inverse routine to ni5010_open(). */
624static int ni5010_close(struct net_device *dev)
625{
626 int ioaddr = dev->base_addr;
627
628 PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name));
Andreas Mohr5b552b12006-06-30 02:25:07 -0700629#ifdef JUMPERED_INTERRUPTS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 free_irq(dev->irq, NULL);
631#endif
632 /* Put card in held-RESET state */
633 outb(0, IE_MMODE);
634 outb(RS_RESET, EDLC_RESET);
635
636 netif_stop_queue(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400637
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname));
639 return 0;
640
641}
642
643/* Get the current statistics. This may be called with the card open or
644 closed. */
645static struct net_device_stats *ni5010_get_stats(struct net_device *dev)
646{
647 struct ni5010_local *lp = netdev_priv(dev);
648
649 PRINTK2((KERN_DEBUG "%s: entering ni5010_get_stats\n", dev->name));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400650
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 if (NI5010_DEBUG) ni5010_show_registers(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400652
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 /* cli(); */
654 /* Update the statistics from the device registers. */
655 /* We do this in the interrupt handler */
656 /* sti(); */
657
658 return &lp->stats;
659}
660
661/* Set or clear the multicast filter for this adaptor.
662 num_addrs == -1 Promiscuous mode, receive all packets
663 num_addrs == 0 Normal mode, clear multicast list
664 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
665 best-effort filtering.
666*/
667static void ni5010_set_multicast_list(struct net_device *dev)
668{
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400669 short ioaddr = dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670
671 PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name));
672
673 if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI) {
674 dev->flags |= IFF_PROMISC;
675 outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */
676 PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name));
677 } else if (dev->mc_list) {
678 /* Sorry, multicast not supported */
679 PRINTK((KERN_DEBUG "%s: No multicast, entering broadcast mode\n", dev->name));
680 outb(RMD_BROADCAST, EDLC_RMODE);
681 } else {
682 PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name));
683 outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */
684 }
685}
686
687static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad)
688{
689 struct ni5010_local *lp = netdev_priv(dev);
690 int ioaddr = dev->base_addr;
691 unsigned long flags;
692 unsigned int buf_offs;
693
694 PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400695
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 if (length > ETH_FRAME_LEN) {
697 PRINTK((KERN_WARNING "%s: packet too large, not possible\n",
698 dev->name));
699 return;
700 }
701
702 if (NI5010_DEBUG) ni5010_show_registers(dev);
703
704 if (inb(IE_ISTAT) & IS_EN_XMT) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400705 PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 dev->name));
707 return;
708 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400709
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 if (NI5010_DEBUG > 3) dump_packet(buf, length);
711
712 buf_offs = NI5010_BUFSIZE - length - pad;
713
714 spin_lock_irqsave(&lp->lock, flags);
715 lp->o_pkt_size = length + pad;
716
717 outb(0, EDLC_RMASK); /* Mask all receive interrupts */
718 outb(0, IE_MMODE); /* Put Xmit buffer on system bus */
719 outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */
720
721 outw(buf_offs, IE_GP); /* Point GP at start of packet */
722 outsb(IE_XBUF, buf, length); /* Put data in buffer */
723 while(pad--)
724 outb(0, IE_XBUF);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400725
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 outw(buf_offs, IE_GP); /* Rewrite where packet starts */
727
728 /* should work without that outb() (Crynwr used it) */
729 /*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */
730 outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */
731 outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */
732
733 spin_unlock_irqrestore(&lp->lock, flags);
734
735 netif_wake_queue(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400736
737 if (NI5010_DEBUG) ni5010_show_registers(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738}
739
740static void chipset_init(struct net_device *dev, int startp)
741{
742 /* FIXME: Move some stuff here */
743 PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name));
744}
745
746static void ni5010_show_registers(struct net_device *dev)
747{
748 int ioaddr = dev->base_addr;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400749
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750 PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT)));
751 PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK)));
752 PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT)));
753 PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK)));
754 PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE)));
755 PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE)));
756 PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT)));
757}
758
759#ifdef MODULE
760static struct net_device *dev_ni5010;
761
Rusty Russell8d3b33f2006-03-25 03:07:05 -0800762module_param(io, int, 0);
763module_param(irq, int, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764MODULE_PARM_DESC(io, "ni5010 I/O base address");
765MODULE_PARM_DESC(irq, "ni5010 IRQ number");
766
Andreas Mohr5b552b12006-06-30 02:25:07 -0700767static int __init ni5010_init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768{
769 PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname));
770 /*
771 if(io <= 0 || irq == 0){
772 printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname);
773 printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname);
774 return -EINVAL;
775 }
776 */
777 if (io <= 0){
778 printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname);
779 }
780
781 PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io));
782 dev_ni5010 = ni5010_probe(-1);
783 if (IS_ERR(dev_ni5010))
784 return PTR_ERR(dev_ni5010);
785 return 0;
786}
787
Andreas Mohr5b552b12006-06-30 02:25:07 -0700788static void __exit ni5010_cleanup_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789{
790 PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname));
791 unregister_netdev(dev_ni5010);
792 release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT);
793 free_netdev(dev_ni5010);
794}
Andreas Mohr5b552b12006-06-30 02:25:07 -0700795module_init(ni5010_init_module);
796module_exit(ni5010_cleanup_module);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797#endif /* MODULE */
798MODULE_LICENSE("GPL");
799
800/*
801 * Local variables:
802 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ni5010.c"
803 * version-control: t
804 * kept-new-versions: 5
805 * tab-width: 4
806 * End:
807 */