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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 {
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 int o_pkt_size;
93 spinlock_t lock;
94};
95
96/* Index to functions, as function prototypes. */
97
98static int ni5010_probe1(struct net_device *dev, int ioaddr);
99static int ni5010_open(struct net_device *dev);
100static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev);
David Howells7d12e782006-10-05 14:55:46 +0100101static irqreturn_t ni5010_interrupt(int irq, void *dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102static void ni5010_rx(struct net_device *dev);
103static void ni5010_timeout(struct net_device *dev);
104static int ni5010_close(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105static void ni5010_set_multicast_list(struct net_device *dev);
106static void reset_receiver(struct net_device *dev);
107
108static int process_xmt_interrupt(struct net_device *dev);
109#define tx_done(dev) 1
110static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad);
111static void chipset_init(struct net_device *dev, int startp);
112static void dump_packet(void *buf, int len);
113static void ni5010_show_registers(struct net_device *dev);
114
115static int io;
116static int irq;
117
118struct 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 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;
160out1:
161 release_region(dev->base_addr, NI5010_IO_EXTENT);
162out:
163 free_netdev(dev);
164 return ERR_PTR(err);
165}
166
167static inline int rd_port(int ioaddr)
168{
169 inb(IE_RBUF);
170 return inb(IE_SAPROM);
171}
172
173static 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
Alexander Beregalov79f1bc02009-03-28 23:37:27 -0700192static 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203/*
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
209static 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
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400238 PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 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);
Joe Perches0795af52007-10-03 17:59:30 -0700282 dev->dev_addr[i] = inb(IE_SAPROM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 }
Johannes Berge1749612008-10-27 15:59:26 -0700284 printk("%pM ", dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285
286 PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name));
287
Andreas Mohr5b552b12006-06-30 02:25:07 -0700288#ifdef JUMPERED_INTERRUPTS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 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 }
Andreas Mohr5b552b12006-06-30 02:25:07 -0700312#endif /* JUMPERED_INTERRUPTS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 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 }
Andreas Mohr5b552b12006-06-30 02:25:07 -0700341 printk("-> bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400342
Alexander Beregalov79f1bc02009-03-28 23:37:27 -0700343 dev->netdev_ops = &ni5010_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 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);
Andreas Mohr5b552b12006-06-30 02:25:07 -0700355 if (dev->dma)
356 printk(" & DMA %d", dev->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 printk(".\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 return 0;
359out:
360 release_region(dev->base_addr, NI5010_IO_EXTENT);
361 return err;
362}
363
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400364/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 * 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
Andreas Mohr5b552b12006-06-30 02:25:07 -0700370 * there is a non-reboot way to recover if something goes wrong.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400372
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373static int ni5010_open(struct net_device *dev)
374{
375 int ioaddr = dev->base_addr;
376 int i;
377
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400378 PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name));
379
Joe Perchesa0607fd2009-11-18 23:29:17 -0800380 if (request_irq(dev->irq, ni5010_interrupt, 0, boardname, dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 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 */
Andreas Mohr5b552b12006-06-30 02:25:07 -0700389#ifdef JUMPERED_DMA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 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 }
Andreas Mohr5b552b12006-06-30 02:25:07 -0700395#endif /* JUMPERED_DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396
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 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400409
410 PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 outb(0, EDLC_XMASK); /* No xmit interrupts for now */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400412 outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 /* 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 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400418
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 outb(0, EDLC_RESET); /* Un-reset the ni5010 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400420
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 netif_start_queue(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400422
423 if (NI5010_DEBUG) ni5010_show_registers(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424
425 PRINTK((KERN_DEBUG "%s: open successful\n", dev->name));
426 return 0;
427}
428
429static void reset_receiver(struct net_device *dev)
430{
431 int ioaddr = dev->base_addr;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400432
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 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
441static 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
452static 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
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400458 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 * Block sending
460 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400461
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 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);
Patrick McHardy6ed10652009-06-23 06:03:08 +0000466 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467}
468
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400469/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 * The typical workload of the driver:
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400471 * Handle the network interface interrupts.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 */
David Howells7d12e782006-10-05 14:55:46 +0100473static irqreturn_t ni5010_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474{
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);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400484
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 spin_lock(&lp->lock);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400486 status = inb(IE_ISTAT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400488
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 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
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400500 if (!xmit_was_error)
501 reset_receiver(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 spin_unlock(&lp->lock);
503 return IRQ_HANDLED;
504}
505
506
507static void dump_packet(void *buf, int len)
508{
509 int i;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400510
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 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");
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400519
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 return;
521}
522
523/* We have a good packet, get it out of the buffer. */
524static void ni5010_rx(struct net_device *dev)
525{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 int ioaddr = dev->base_addr;
527 unsigned char rcv_stat;
528 struct sk_buff *skb;
529 int i_pkt_size;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400530
531 PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name));
532
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 rcv_stat = inb(EDLC_RSTAT);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400534 PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat));
535
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) {
537 PRINTK((KERN_INFO "%s: receive error.\n", dev->name));
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700538 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++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 outb(0xff, EDLC_RCLR); /* Clear the interrupt */
544 return;
545 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400546
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 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 ) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400551 PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 dev->name, i_pkt_size));
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700553 dev->stats.rx_errors++;
554 dev->stats.rx_length_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 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);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700562 dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 return;
564 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400565
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 skb_reserve(skb, 2);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400567
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 /* 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 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400571 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 skb->protocol = eth_type_trans(skb,dev);
577 netif_rx(skb);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700578 dev->stats.rx_packets++;
579 dev->stats.rx_bytes += i_pkt_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580
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));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583}
584
585static 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));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400595
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 outb(0, EDLC_XMASK); /* Disable xmit IRQ's */
597 outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400598
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 if (xmit_stat & XS_COLL){
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400600 PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 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 */
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700606 dev->stats.collisions++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 return 1;
608 }
609
610 /* FIXME: handle other xmt error conditions */
611
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700612 dev->stats.tx_packets++;
613 dev->stats.tx_bytes += lp->o_pkt_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614 netif_wake_queue(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400615
616 PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 dev->name, lp->o_pkt_size));
618
619 return 0;
620}
621
622/* The inverse routine to ni5010_open(). */
623static 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));
Andreas Mohr5b552b12006-06-30 02:25:07 -0700628#ifdef JUMPERED_INTERRUPTS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 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);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400636
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637 PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname));
638 return 0;
639
640}
641
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642/* 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*/
648static void ni5010_set_multicast_list(struct net_device *dev)
649{
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400650 short ioaddr = dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651
652 PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name));
653
Jiri Pirkof9dcbcc2010-02-23 09:19:49 +0000654 if (dev->flags & IFF_PROMISC || dev->flags & IFF_ALLMULTI ||
655 !netdev_mc_empty(dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */
657 PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 } else {
659 PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name));
660 outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */
661 }
662}
663
664static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad)
665{
666 struct ni5010_local *lp = netdev_priv(dev);
667 int ioaddr = dev->base_addr;
668 unsigned long flags;
669 unsigned int buf_offs;
670
671 PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400672
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 if (length > ETH_FRAME_LEN) {
674 PRINTK((KERN_WARNING "%s: packet too large, not possible\n",
675 dev->name));
676 return;
677 }
678
679 if (NI5010_DEBUG) ni5010_show_registers(dev);
680
681 if (inb(IE_ISTAT) & IS_EN_XMT) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400682 PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 dev->name));
684 return;
685 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400686
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687 if (NI5010_DEBUG > 3) dump_packet(buf, length);
688
689 buf_offs = NI5010_BUFSIZE - length - pad;
690
691 spin_lock_irqsave(&lp->lock, flags);
692 lp->o_pkt_size = length + pad;
693
694 outb(0, EDLC_RMASK); /* Mask all receive interrupts */
695 outb(0, IE_MMODE); /* Put Xmit buffer on system bus */
696 outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */
697
698 outw(buf_offs, IE_GP); /* Point GP at start of packet */
699 outsb(IE_XBUF, buf, length); /* Put data in buffer */
700 while(pad--)
701 outb(0, IE_XBUF);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400702
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 outw(buf_offs, IE_GP); /* Rewrite where packet starts */
704
705 /* should work without that outb() (Crynwr used it) */
706 /*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */
707 outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */
708 outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */
709
710 spin_unlock_irqrestore(&lp->lock, flags);
711
712 netif_wake_queue(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400713
714 if (NI5010_DEBUG) ni5010_show_registers(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715}
716
717static void chipset_init(struct net_device *dev, int startp)
718{
719 /* FIXME: Move some stuff here */
720 PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name));
721}
722
723static void ni5010_show_registers(struct net_device *dev)
724{
725 int ioaddr = dev->base_addr;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400726
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727 PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT)));
728 PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK)));
729 PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT)));
730 PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK)));
731 PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE)));
732 PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE)));
733 PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT)));
734}
735
736#ifdef MODULE
737static struct net_device *dev_ni5010;
738
Rusty Russell8d3b33f2006-03-25 03:07:05 -0800739module_param(io, int, 0);
740module_param(irq, int, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741MODULE_PARM_DESC(io, "ni5010 I/O base address");
742MODULE_PARM_DESC(irq, "ni5010 IRQ number");
743
Andreas Mohr5b552b12006-06-30 02:25:07 -0700744static int __init ni5010_init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745{
746 PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname));
747 /*
748 if(io <= 0 || irq == 0){
749 printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname);
750 printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname);
751 return -EINVAL;
752 }
753 */
754 if (io <= 0){
755 printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname);
756 }
757
758 PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io));
759 dev_ni5010 = ni5010_probe(-1);
760 if (IS_ERR(dev_ni5010))
761 return PTR_ERR(dev_ni5010);
762 return 0;
763}
764
Andreas Mohr5b552b12006-06-30 02:25:07 -0700765static void __exit ni5010_cleanup_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766{
767 PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname));
768 unregister_netdev(dev_ni5010);
769 release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT);
770 free_netdev(dev_ni5010);
771}
Andreas Mohr5b552b12006-06-30 02:25:07 -0700772module_init(ni5010_init_module);
773module_exit(ni5010_cleanup_module);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774#endif /* MODULE */
775MODULE_LICENSE("GPL");