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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * net-3-driver for the NI5210 card (i82586 Ethernet chip) | |
3 | * | |
4 | * This is an extension to the Linux operating system, and is covered by the | |
5 | * same GNU General Public License that covers that work. | |
6 | * | |
7 | * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later) | |
8 | * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de) | |
9 | * [feel free to mail ....] | |
10 | * | |
11 | * when using as module: (no autoprobing!) | |
12 | * compile with: | |
13 | * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni52.c | |
14 | * run with e.g: | |
15 | * insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000 | |
16 | * | |
17 | * CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!. | |
18 | * | |
19 | * If you find a bug, please report me: | |
20 | * The kernel panic output and any kmsg from the ni52 driver | |
21 | * the ni5210-driver-version and the linux-kernel version | |
22 | * how many shared memory (memsize) on the netcard, | |
23 | * bootprom: yes/no, base_addr, mem_start | |
24 | * maybe the ni5210-card revision and the i82586 version | |
25 | * | |
26 | * autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340 | |
27 | * mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000, | |
28 | * 0xd8000,0xcc000,0xce000,0xda000,0xdc000 | |
29 | * | |
30 | * sources: | |
31 | * skeleton.c from Donald Becker | |
32 | * | |
33 | * I have also done a look in the following sources: (mail me if you need them) | |
34 | * crynwr-packet-driver by Russ Nelson | |
35 | * Garret A. Wollman's (fourth) i82586-driver for BSD | |
a197f693 AC |
36 | * (before getting an i82596 (yes 596 not 586) manual, the existing drivers |
37 | * helped me a lot to understand this tricky chip.) | |
1da177e4 LT |
38 | * |
39 | * Known Problems: | |
40 | * The internal sysbus seems to be slow. So we often lose packets because of | |
41 | * overruns while receiving from a fast remote host. | |
a197f693 AC |
42 | * This can slow down TCP connections. Maybe the newer ni5210 cards are |
43 | * better. My experience is, that if a machine sends with more than about | |
44 | * 500-600K/s the fifo/sysbus overflows. | |
1da177e4 LT |
45 | * |
46 | * IMPORTANT NOTE: | |
47 | * On fast networks, it's a (very) good idea to have 16K shared memory. With | |
a197f693 AC |
48 | * 8K, we can store only 4 receive frames, so it can (easily) happen that a |
49 | * remote machine 'overruns' our system. | |
1da177e4 LT |
50 | * |
51 | * Known i82586/card problems (I'm sure, there are many more!): | |
52 | * Running the NOP-mode, the i82586 sometimes seems to forget to report | |
53 | * every xmit-interrupt until we restart the CU. | |
54 | * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit | |
55 | * in the RBD-Struct which indicates an end of the RBD queue. | |
56 | * Instead, the RU fetches another (randomly selected and | |
57 | * usually used) RBD and begins to fill it. (Maybe, this happens only if | |
58 | * the last buffer from the previous RFD fits exact into the queue and | |
59 | * the next RFD can't fetch an initial RBD. Anyone knows more? ) | |
60 | * | |
61 | * results from ftp performance tests with Linux 1.2.5 | |
62 | * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s) | |
a197f693 AC |
63 | * sending in NOP-mode: peak performance up to 530K/s (but better don't |
64 | * run this mode) | |
1da177e4 LT |
65 | */ |
66 | ||
67 | /* | |
68 | * 29.Sept.96: virt_to_bus changes for new memory scheme | |
69 | * 19.Feb.96: more Mcast changes, module support (MH) | |
70 | * | |
71 | * 18.Nov.95: Mcast changes (AC). | |
72 | * | |
73 | * 23.April.95: fixed(?) receiving problems by configuring a RFD more | |
74 | * than the number of RBD's. Can maybe cause other problems. | |
75 | * 18.April.95: Added MODULE support (MH) | |
76 | * 17.April.95: MC related changes in init586() and set_multicast_list(). | |
77 | * removed use of 'jiffies' in init586() (MH) | |
78 | * | |
79 | * 19.Sep.94: Added Multicast support (not tested yet) (MH) | |
80 | * | |
81 | * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling. | |
82 | * Now, every RFD has exact one RBD. (MH) | |
83 | * | |
84 | * 14.Sep.94: added promiscuous mode, a few cleanups (MH) | |
85 | * | |
86 | * 19.Aug.94: changed request_irq() parameter (MH) | |
87 | * | |
88 | * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH) | |
89 | * | |
90 | * 19.July.94: lotsa cleanups .. (MH) | |
91 | * | |
92 | * 17.July.94: some patches ... verified to run with 1.1.29 (MH) | |
93 | * | |
94 | * 4.July.94: patches for Linux 1.1.24 (MH) | |
95 | * | |
96 | * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH) | |
97 | * | |
a197f693 AC |
98 | * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff, |
99 | * too (MH) | |
1da177e4 LT |
100 | * |
101 | * < 30.Sep.93: first versions | |
102 | */ | |
103 | ||
104 | static int debuglevel; /* debug-printk 0: off 1: a few 2: more */ | |
105 | static int automatic_resume; /* experimental .. better should be zero */ | |
106 | static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */ | |
a197f693 | 107 | static int fifo = 0x8; /* don't change */ |
1da177e4 | 108 | |
1da177e4 LT |
109 | #include <linux/module.h> |
110 | #include <linux/kernel.h> | |
111 | #include <linux/string.h> | |
112 | #include <linux/errno.h> | |
113 | #include <linux/ioport.h> | |
114 | #include <linux/slab.h> | |
115 | #include <linux/interrupt.h> | |
116 | #include <linux/delay.h> | |
117 | #include <linux/init.h> | |
118 | #include <linux/bitops.h> | |
119 | #include <asm/io.h> | |
120 | ||
121 | #include <linux/netdevice.h> | |
122 | #include <linux/etherdevice.h> | |
123 | #include <linux/skbuff.h> | |
124 | ||
125 | #include "ni52.h" | |
126 | ||
127 | #define DRV_NAME "ni52" | |
128 | ||
129 | #define DEBUG /* debug on */ | |
130 | #define SYSBUSVAL 1 /* 8 Bit */ | |
131 | ||
a197f693 AC |
132 | #define ni_attn586() { outb(0, dev->base_addr + NI52_ATTENTION); } |
133 | #define ni_reset586() { outb(0, dev->base_addr + NI52_RESET); } | |
134 | #define ni_disint() { outb(0, dev->base_addr + NI52_INTDIS); } | |
135 | #define ni_enaint() { outb(0, dev->base_addr + NI52_INTENA); } | |
1da177e4 | 136 | |
05bd831f | 137 | #define make32(ptr16) ((void __iomem *)(p->memtop + (short) (ptr16))) |
e06ee2bb AV |
138 | #define make24(ptr32) ((char __iomem *)(ptr32)) - p->base |
139 | #define make16(ptr32) ((unsigned short) ((char __iomem *)(ptr32)\ | |
140 | - p->memtop)) | |
1da177e4 LT |
141 | |
142 | /******************* how to calculate the buffers ***************************** | |
143 | ||
144 | * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works | |
145 | * --------------- in a different (more stable?) mode. Only in this mode it's | |
146 | * possible to configure the driver with 'NO_NOPCOMMANDS' | |
147 | ||
148 | sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8; | |
149 | sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT | |
150 | sizeof(rfd) = 24; sizeof(rbd) = 12; | |
151 | sizeof(tbd) = 8; sizeof(transmit_cmd) = 16; | |
152 | sizeof(nop_cmd) = 8; | |
153 | ||
154 | * if you don't know the driver, better do not change these values: */ | |
155 | ||
156 | #define RECV_BUFF_SIZE 1524 /* slightly oversized */ | |
157 | #define XMIT_BUFF_SIZE 1524 /* slightly oversized */ | |
158 | #define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */ | |
159 | #define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */ | |
160 | #define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */ | |
161 | #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */ | |
162 | ||
163 | /**************************************************************************/ | |
164 | ||
1da177e4 LT |
165 | |
166 | #define NI52_TOTAL_SIZE 16 | |
167 | #define NI52_ADDR0 0x02 | |
168 | #define NI52_ADDR1 0x07 | |
169 | #define NI52_ADDR2 0x01 | |
170 | ||
a197f693 AC |
171 | static int ni52_probe1(struct net_device *dev, int ioaddr); |
172 | static irqreturn_t ni52_interrupt(int irq, void *dev_id); | |
1da177e4 LT |
173 | static int ni52_open(struct net_device *dev); |
174 | static int ni52_close(struct net_device *dev); | |
a197f693 | 175 | static int ni52_send_packet(struct sk_buff *, struct net_device *); |
1da177e4 LT |
176 | static struct net_device_stats *ni52_get_stats(struct net_device *dev); |
177 | static void set_multicast_list(struct net_device *dev); | |
178 | static void ni52_timeout(struct net_device *dev); | |
1da177e4 LT |
179 | |
180 | /* helper-functions */ | |
181 | static int init586(struct net_device *dev); | |
de597146 | 182 | static int check586(struct net_device *dev, unsigned size); |
1da177e4 LT |
183 | static void alloc586(struct net_device *dev); |
184 | static void startrecv586(struct net_device *dev); | |
2d76c267 | 185 | static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr); |
1da177e4 LT |
186 | static void ni52_rcv_int(struct net_device *dev); |
187 | static void ni52_xmt_int(struct net_device *dev); | |
188 | static void ni52_rnr_int(struct net_device *dev); | |
189 | ||
a197f693 | 190 | struct priv { |
1da177e4 | 191 | struct net_device_stats stats; |
e06ee2bb AV |
192 | char __iomem *base; |
193 | char __iomem *mapped; | |
2d76c267 | 194 | char __iomem *memtop; |
a197f693 AC |
195 | spinlock_t spinlock; |
196 | int reset; | |
2d76c267 AV |
197 | struct rfd_struct __iomem *rfd_last, *rfd_top, *rfd_first; |
198 | struct scp_struct __iomem *scp; | |
199 | struct iscp_struct __iomem *iscp; | |
200 | struct scb_struct __iomem *scb; | |
201 | struct tbd_struct __iomem *xmit_buffs[NUM_XMIT_BUFFS]; | |
1da177e4 | 202 | #if (NUM_XMIT_BUFFS == 1) |
2d76c267 AV |
203 | struct transmit_cmd_struct __iomem *xmit_cmds[2]; |
204 | struct nop_cmd_struct __iomem *nop_cmds[2]; | |
1da177e4 | 205 | #else |
2d76c267 AV |
206 | struct transmit_cmd_struct __iomem *xmit_cmds[NUM_XMIT_BUFFS]; |
207 | struct nop_cmd_struct __iomem *nop_cmds[NUM_XMIT_BUFFS]; | |
1da177e4 | 208 | #endif |
a197f693 | 209 | int nop_point, num_recv_buffs; |
2d76c267 | 210 | char __iomem *xmit_cbuffs[NUM_XMIT_BUFFS]; |
a197f693 | 211 | int xmit_count, xmit_last; |
1da177e4 LT |
212 | }; |
213 | ||
a197f693 AC |
214 | /* wait for command with timeout: */ |
215 | static void wait_for_scb_cmd(struct net_device *dev) | |
216 | { | |
217 | struct priv *p = dev->priv; | |
218 | int i; | |
219 | for (i = 0; i < 16384; i++) { | |
220 | if (readb(&p->scb->cmd_cuc) == 0) | |
221 | break; | |
222 | udelay(4); | |
223 | if (i == 16383) { | |
224 | printk(KERN_ERR "%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n", | |
225 | dev->name, readb(&p->scb->cmd_cuc), readb(&p->scb->cus)); | |
226 | if (!p->reset) { | |
227 | p->reset = 1; | |
228 | ni_reset586(); | |
229 | } | |
230 | } | |
231 | } | |
232 | } | |
233 | ||
234 | static void wait_for_scb_cmd_ruc(struct net_device *dev) | |
235 | { | |
236 | struct priv *p = dev->priv; | |
237 | int i; | |
238 | for (i = 0; i < 16384; i++) { | |
239 | if (readb(&p->scb->cmd_ruc) == 0) | |
240 | break; | |
241 | udelay(4); | |
242 | if (i == 16383) { | |
243 | printk(KERN_ERR "%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n", | |
05bd831f AV |
244 | dev->name, readb(&p->scb->cmd_ruc), |
245 | readb(&p->scb->rus)); | |
a197f693 AC |
246 | if (!p->reset) { |
247 | p->reset = 1; | |
248 | ni_reset586(); | |
249 | } | |
250 | } | |
251 | } | |
252 | } | |
253 | ||
2d76c267 | 254 | static void wait_for_stat_compl(void __iomem *p) |
a197f693 | 255 | { |
2d76c267 | 256 | struct nop_cmd_struct __iomem *addr = p; |
a197f693 AC |
257 | int i; |
258 | for (i = 0; i < 32767; i++) { | |
259 | if (readw(&((addr)->cmd_status)) & STAT_COMPL) | |
260 | break; | |
261 | udelay(32); | |
262 | } | |
263 | } | |
264 | ||
1da177e4 LT |
265 | /********************************************** |
266 | * close device | |
267 | */ | |
268 | static int ni52_close(struct net_device *dev) | |
269 | { | |
270 | free_irq(dev->irq, dev); | |
1da177e4 | 271 | ni_reset586(); /* the hard way to stop the receiver */ |
1da177e4 | 272 | netif_stop_queue(dev); |
1da177e4 LT |
273 | return 0; |
274 | } | |
275 | ||
276 | /********************************************** | |
277 | * open device | |
278 | */ | |
279 | static int ni52_open(struct net_device *dev) | |
280 | { | |
281 | int ret; | |
282 | ||
283 | ni_disint(); | |
284 | alloc586(dev); | |
285 | init586(dev); | |
286 | startrecv586(dev); | |
287 | ni_enaint(); | |
288 | ||
a197f693 AC |
289 | ret = request_irq(dev->irq, &ni52_interrupt, 0, dev->name, dev); |
290 | if (ret) { | |
1da177e4 LT |
291 | ni_reset586(); |
292 | return ret; | |
293 | } | |
1da177e4 | 294 | netif_start_queue(dev); |
1da177e4 LT |
295 | return 0; /* most done by init */ |
296 | } | |
297 | ||
76af5699 AV |
298 | static int check_iscp(struct net_device *dev, void __iomem *addr) |
299 | { | |
300 | struct iscp_struct __iomem *iscp = addr; | |
301 | struct priv *p = dev->priv; | |
302 | memset_io(iscp, 0, sizeof(struct iscp_struct)); | |
303 | ||
304 | writel(make24(iscp), &p->scp->iscp); | |
305 | writeb(1, &iscp->busy); | |
306 | ||
307 | ni_reset586(); | |
308 | ni_attn586(); | |
309 | mdelay(32); /* wait a while... */ | |
310 | /* i82586 clears 'busy' after successful init */ | |
311 | if (readb(&iscp->busy)) | |
312 | return 0; | |
313 | return 1; | |
314 | } | |
315 | ||
1da177e4 LT |
316 | /********************************************** |
317 | * Check to see if there's an 82586 out there. | |
318 | */ | |
de597146 | 319 | static int check586(struct net_device *dev, unsigned size) |
1da177e4 | 320 | { |
7f8cfd56 | 321 | struct priv *p = dev->priv; |
1da177e4 LT |
322 | int i; |
323 | ||
176f65f3 AV |
324 | p->mapped = ioremap(dev->mem_start, size); |
325 | if (!p->mapped) | |
326 | return 0; | |
327 | ||
e06ee2bb AV |
328 | p->base = p->mapped + size - 0x01000000; |
329 | p->memtop = p->mapped + size; | |
2d76c267 | 330 | p->scp = (struct scp_struct __iomem *)(p->base + SCP_DEFAULT_ADDRESS); |
7f8cfd56 | 331 | p->scb = (struct scb_struct __iomem *) p->mapped; |
76af5699 | 332 | p->iscp = (struct iscp_struct __iomem *)p->scp - 1; |
2d76c267 | 333 | memset_io(p->scp, 0, sizeof(struct scp_struct)); |
a197f693 AC |
334 | for (i = 0; i < sizeof(struct scp_struct); i++) |
335 | /* memory was writeable? */ | |
2d76c267 | 336 | if (readb((char __iomem *)p->scp + i)) |
176f65f3 | 337 | goto Enodev; |
a197f693 AC |
338 | writeb(SYSBUSVAL, &p->scp->sysbus); /* 1 = 8Bit-Bus, 0 = 16 Bit */ |
339 | if (readb(&p->scp->sysbus) != SYSBUSVAL) | |
176f65f3 | 340 | goto Enodev; |
1da177e4 | 341 | |
76af5699 | 342 | if (!check_iscp(dev, p->mapped)) |
176f65f3 | 343 | goto Enodev; |
76af5699 | 344 | if (!check_iscp(dev, p->iscp)) |
176f65f3 | 345 | goto Enodev; |
1da177e4 | 346 | return 1; |
176f65f3 AV |
347 | Enodev: |
348 | iounmap(p->mapped); | |
349 | return 0; | |
1da177e4 LT |
350 | } |
351 | ||
352 | /****************************************************************** | |
353 | * set iscp at the right place, called by ni52_probe1 and open586. | |
354 | */ | |
355 | static void alloc586(struct net_device *dev) | |
356 | { | |
357 | struct priv *p = (struct priv *) dev->priv; | |
358 | ||
359 | ni_reset586(); | |
a197f693 AC |
360 | mdelay(32); |
361 | ||
a197f693 AC |
362 | memset_io(p->iscp, 0, sizeof(struct iscp_struct)); |
363 | memset_io(p->scp , 0, sizeof(struct scp_struct)); | |
1da177e4 | 364 | |
a197f693 AC |
365 | writel(make24(p->iscp), &p->scp->iscp); |
366 | writeb(SYSBUSVAL, &p->scp->sysbus); | |
367 | writew(make16(p->scb), &p->iscp->scb_offset); | |
1da177e4 | 368 | |
a197f693 | 369 | writeb(1, &p->iscp->busy); |
1da177e4 LT |
370 | ni_reset586(); |
371 | ni_attn586(); | |
372 | ||
a197f693 | 373 | mdelay(32); |
1da177e4 | 374 | |
a197f693 AC |
375 | if (readb(&p->iscp->busy)) |
376 | printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name); | |
1da177e4 | 377 | |
a197f693 | 378 | p->reset = 0; |
1da177e4 | 379 | |
2d76c267 | 380 | memset_io(p->scb, 0, sizeof(struct scb_struct)); |
1da177e4 LT |
381 | } |
382 | ||
383 | /* set: io,irq,memstart,memend or set it when calling insmod */ | |
a197f693 AC |
384 | static int irq = 9; |
385 | static int io = 0x300; | |
1da177e4 LT |
386 | static long memstart; /* e.g 0xd0000 */ |
387 | static long memend; /* e.g 0xd4000 */ | |
388 | ||
389 | /********************************************** | |
390 | * probe the ni5210-card | |
391 | */ | |
392 | struct net_device * __init ni52_probe(int unit) | |
393 | { | |
394 | struct net_device *dev = alloc_etherdev(sizeof(struct priv)); | |
395 | static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0}; | |
176f65f3 | 396 | struct priv *p; |
1da177e4 LT |
397 | int *port; |
398 | int err = 0; | |
399 | ||
400 | if (!dev) | |
401 | return ERR_PTR(-ENOMEM); | |
402 | ||
176f65f3 AV |
403 | p = dev->priv; |
404 | ||
1da177e4 LT |
405 | if (unit >= 0) { |
406 | sprintf(dev->name, "eth%d", unit); | |
407 | netdev_boot_setup_check(dev); | |
408 | io = dev->base_addr; | |
409 | irq = dev->irq; | |
410 | memstart = dev->mem_start; | |
411 | memend = dev->mem_end; | |
412 | } | |
413 | ||
1da177e4 LT |
414 | if (io > 0x1ff) { /* Check a single specified location. */ |
415 | err = ni52_probe1(dev, io); | |
416 | } else if (io > 0) { /* Don't probe at all. */ | |
417 | err = -ENXIO; | |
418 | } else { | |
419 | for (port = ports; *port && ni52_probe1(dev, *port) ; port++) | |
420 | ; | |
421 | if (*port) | |
422 | goto got_it; | |
423 | #ifdef FULL_IO_PROBE | |
424 | for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8) | |
425 | ; | |
426 | if (io < 0x400) | |
427 | goto got_it; | |
428 | #endif | |
429 | err = -ENODEV; | |
430 | } | |
431 | if (err) | |
432 | goto out; | |
433 | got_it: | |
434 | err = register_netdev(dev); | |
435 | if (err) | |
436 | goto out1; | |
437 | return dev; | |
438 | out1: | |
176f65f3 | 439 | iounmap(p->mapped); |
1da177e4 LT |
440 | release_region(dev->base_addr, NI52_TOTAL_SIZE); |
441 | out: | |
442 | free_netdev(dev); | |
443 | return ERR_PTR(err); | |
444 | } | |
445 | ||
a197f693 | 446 | static int __init ni52_probe1(struct net_device *dev, int ioaddr) |
1da177e4 LT |
447 | { |
448 | int i, size, retval; | |
e06ee2bb | 449 | struct priv *priv = dev->priv; |
1da177e4 LT |
450 | |
451 | dev->base_addr = ioaddr; | |
452 | dev->irq = irq; | |
453 | dev->mem_start = memstart; | |
454 | dev->mem_end = memend; | |
455 | ||
7f8cfd56 AV |
456 | spin_lock_init(&priv->spinlock); |
457 | ||
1da177e4 LT |
458 | if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME)) |
459 | return -EBUSY; | |
460 | ||
a197f693 | 461 | if (!(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) || |
1da177e4 LT |
462 | !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) { |
463 | retval = -ENODEV; | |
464 | goto out; | |
465 | } | |
466 | ||
a197f693 | 467 | for (i = 0; i < ETH_ALEN; i++) |
1da177e4 LT |
468 | dev->dev_addr[i] = inb(dev->base_addr+i); |
469 | ||
a197f693 | 470 | if (dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1 |
1da177e4 LT |
471 | || dev->dev_addr[2] != NI52_ADDR2) { |
472 | retval = -ENODEV; | |
473 | goto out; | |
474 | } | |
475 | ||
a197f693 AC |
476 | printk(KERN_INFO "%s: NI5210 found at %#3lx, ", |
477 | dev->name, dev->base_addr); | |
1da177e4 LT |
478 | |
479 | /* | |
480 | * check (or search) IO-Memory, 8K and 16K | |
481 | */ | |
482 | #ifdef MODULE | |
483 | size = dev->mem_end - dev->mem_start; | |
a197f693 AC |
484 | if (size != 0x2000 && size != 0x4000) { |
485 | printk("\n"); | |
486 | printk(KERN_ERR "%s: Invalid memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n", dev->name, size); | |
1da177e4 LT |
487 | retval = -ENODEV; |
488 | goto out; | |
489 | } | |
de597146 | 490 | if (!check586(dev, size)) { |
a197f693 | 491 | printk(KERN_ERR "?memcheck, Can't find memory at 0x%lx with size %d!\n", dev->mem_start, size); |
1da177e4 LT |
492 | retval = -ENODEV; |
493 | goto out; | |
494 | } | |
495 | #else | |
a197f693 AC |
496 | if (dev->mem_start != 0) { |
497 | /* no auto-mem-probe */ | |
1da177e4 | 498 | size = 0x4000; /* check for 16K mem */ |
de597146 | 499 | if (!check586(dev, size)) { |
1da177e4 | 500 | size = 0x2000; /* check for 8K mem */ |
de597146 | 501 | if (!check586(dev, size)) { |
a197f693 | 502 | printk(KERN_ERR "?memprobe, Can't find memory at 0x%lx!\n", dev->mem_start); |
1da177e4 LT |
503 | retval = -ENODEV; |
504 | goto out; | |
505 | } | |
506 | } | |
a197f693 AC |
507 | } else { |
508 | static const unsigned long memaddrs[] = { | |
509 | 0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000, | |
510 | 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0 | |
511 | }; | |
512 | for (i = 0;; i++) { | |
513 | if (!memaddrs[i]) { | |
514 | printk(KERN_ERR "?memprobe, Can't find io-memory!\n"); | |
1da177e4 LT |
515 | retval = -ENODEV; |
516 | goto out; | |
517 | } | |
518 | dev->mem_start = memaddrs[i]; | |
519 | size = 0x2000; /* check for 8K mem */ | |
de597146 | 520 | if (check586(dev, size)) |
a197f693 | 521 | /* 8K-check */ |
1da177e4 LT |
522 | break; |
523 | size = 0x4000; /* check for 16K mem */ | |
de597146 | 524 | if (check586(dev, size)) |
a197f693 | 525 | /* 16K-check */ |
1da177e4 LT |
526 | break; |
527 | } | |
528 | } | |
a197f693 AC |
529 | /* set mem_end showed by 'ifconfig' */ |
530 | dev->mem_end = dev->mem_start + size; | |
1da177e4 LT |
531 | #endif |
532 | ||
1da177e4 LT |
533 | alloc586(dev); |
534 | ||
535 | /* set number of receive-buffs according to memsize */ | |
a197f693 | 536 | if (size == 0x2000) |
e06ee2bb | 537 | priv->num_recv_buffs = NUM_RECV_BUFFS_8; |
1da177e4 | 538 | else |
e06ee2bb | 539 | priv->num_recv_buffs = NUM_RECV_BUFFS_16; |
1da177e4 | 540 | |
a197f693 AC |
541 | printk(KERN_DEBUG "Memaddr: 0x%lx, Memsize: %d, ", |
542 | dev->mem_start, size); | |
1da177e4 | 543 | |
a197f693 | 544 | if (dev->irq < 2) { |
1da177e4 LT |
545 | unsigned long irq_mask; |
546 | ||
547 | irq_mask = probe_irq_on(); | |
548 | ni_reset586(); | |
549 | ni_attn586(); | |
550 | ||
551 | mdelay(20); | |
552 | dev->irq = probe_irq_off(irq_mask); | |
a197f693 | 553 | if (!dev->irq) { |
1da177e4 LT |
554 | printk("?autoirq, Failed to detect IRQ line!\n"); |
555 | retval = -EAGAIN; | |
176f65f3 | 556 | iounmap(priv->mapped); |
1da177e4 LT |
557 | goto out; |
558 | } | |
a197f693 AC |
559 | printk("IRQ %d (autodetected).\n", dev->irq); |
560 | } else { | |
561 | if (dev->irq == 2) | |
1da177e4 | 562 | dev->irq = 9; |
a197f693 | 563 | printk("IRQ %d (assigned and not checked!).\n", dev->irq); |
1da177e4 LT |
564 | } |
565 | ||
566 | dev->open = ni52_open; | |
567 | dev->stop = ni52_close; | |
568 | dev->get_stats = ni52_get_stats; | |
569 | dev->tx_timeout = ni52_timeout; | |
570 | dev->watchdog_timeo = HZ/20; | |
571 | dev->hard_start_xmit = ni52_send_packet; | |
572 | dev->set_multicast_list = set_multicast_list; | |
573 | ||
574 | dev->if_port = 0; | |
575 | ||
576 | return 0; | |
577 | out: | |
578 | release_region(ioaddr, NI52_TOTAL_SIZE); | |
579 | return retval; | |
580 | } | |
581 | ||
582 | /********************************************** | |
583 | * init the chip (ni52-interrupt should be disabled?!) | |
584 | * needs a correct 'allocated' memory | |
585 | */ | |
586 | ||
587 | static int init586(struct net_device *dev) | |
588 | { | |
2d76c267 | 589 | void __iomem *ptr; |
a197f693 AC |
590 | int i, result = 0; |
591 | struct priv *p = (struct priv *)dev->priv; | |
2d76c267 AV |
592 | struct configure_cmd_struct __iomem *cfg_cmd; |
593 | struct iasetup_cmd_struct __iomem *ias_cmd; | |
594 | struct tdr_cmd_struct __iomem *tdr_cmd; | |
595 | struct mcsetup_cmd_struct __iomem *mc_cmd; | |
a197f693 AC |
596 | struct dev_mc_list *dmi = dev->mc_list; |
597 | int num_addrs = dev->mc_count; | |
1da177e4 | 598 | |
2d76c267 | 599 | ptr = p->scb + 1; |
1da177e4 | 600 | |
2d76c267 | 601 | cfg_cmd = ptr; /* configure-command */ |
a197f693 AC |
602 | writew(0, &cfg_cmd->cmd_status); |
603 | writew(CMD_CONFIGURE | CMD_LAST, &cfg_cmd->cmd_cmd); | |
604 | writew(0xFFFF, &cfg_cmd->cmd_link); | |
605 | ||
606 | /* number of cfg bytes */ | |
607 | writeb(0x0a, &cfg_cmd->byte_cnt); | |
608 | /* fifo-limit (8=tx:32/rx:64) */ | |
609 | writeb(fifo, &cfg_cmd->fifo); | |
610 | /* hold or discard bad recv frames (bit 7) */ | |
611 | writeb(0x40, &cfg_cmd->sav_bf); | |
612 | /* addr_len |!src_insert |pre-len |loopback */ | |
613 | writeb(0x2e, &cfg_cmd->adr_len); | |
614 | writeb(0x00, &cfg_cmd->priority); | |
615 | writeb(0x60, &cfg_cmd->ifs);; | |
616 | writeb(0x00, &cfg_cmd->time_low); | |
617 | writeb(0xf2, &cfg_cmd->time_high); | |
618 | writeb(0x00, &cfg_cmd->promisc);; | |
619 | if (dev->flags & IFF_ALLMULTI) { | |
2d76c267 | 620 | int len = ((char __iomem *)p->iscp - (char __iomem *)ptr - 8) / 6; |
a197f693 AC |
621 | if (num_addrs > len) { |
622 | printk(KERN_ERR "%s: switching to promisc. mode\n", | |
623 | dev->name); | |
624 | dev->flags |= IFF_PROMISC; | |
1da177e4 LT |
625 | } |
626 | } | |
a197f693 AC |
627 | if (dev->flags & IFF_PROMISC) |
628 | writeb(0x01, &cfg_cmd->promisc); | |
629 | writeb(0x00, &cfg_cmd->carr_coll); | |
630 | writew(make16(cfg_cmd), &p->scb->cbl_offset); | |
05bd831f | 631 | writeb(0, &p->scb->cmd_ruc); |
1da177e4 | 632 | |
a197f693 | 633 | writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ |
1da177e4 LT |
634 | ni_attn586(); |
635 | ||
a197f693 | 636 | wait_for_stat_compl(cfg_cmd); |
1da177e4 | 637 | |
a197f693 AC |
638 | if ((readw(&cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != |
639 | (STAT_COMPL|STAT_OK)) { | |
640 | printk(KERN_ERR "%s: configure command failed: %x\n", | |
641 | dev->name, readw(&cfg_cmd->cmd_status)); | |
1da177e4 LT |
642 | return 1; |
643 | } | |
644 | ||
645 | /* | |
646 | * individual address setup | |
647 | */ | |
648 | ||
2d76c267 | 649 | ias_cmd = ptr; |
1da177e4 | 650 | |
a197f693 AC |
651 | writew(0, &ias_cmd->cmd_status); |
652 | writew(CMD_IASETUP | CMD_LAST, &ias_cmd->cmd_cmd); | |
653 | writew(0xffff, &ias_cmd->cmd_link); | |
1da177e4 | 654 | |
2d76c267 | 655 | memcpy_toio(&ias_cmd->iaddr, (char *)dev->dev_addr, ETH_ALEN); |
1da177e4 | 656 | |
a197f693 | 657 | writew(make16(ias_cmd), &p->scb->cbl_offset); |
1da177e4 | 658 | |
a197f693 | 659 | writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ |
1da177e4 LT |
660 | ni_attn586(); |
661 | ||
a197f693 | 662 | wait_for_stat_compl(ias_cmd); |
1da177e4 | 663 | |
a197f693 AC |
664 | if ((readw(&ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != |
665 | (STAT_OK|STAT_COMPL)) { | |
666 | printk(KERN_ERR "%s (ni52): individual address setup command failed: %04x\n", dev->name, readw(&ias_cmd->cmd_status)); | |
1da177e4 LT |
667 | return 1; |
668 | } | |
669 | ||
670 | /* | |
671 | * TDR, wire check .. e.g. no resistor e.t.c | |
672 | */ | |
6aa20a22 | 673 | |
2d76c267 | 674 | tdr_cmd = ptr; |
1da177e4 | 675 | |
a197f693 AC |
676 | writew(0, &tdr_cmd->cmd_status); |
677 | writew(CMD_TDR | CMD_LAST, &tdr_cmd->cmd_cmd); | |
678 | writew(0xffff, &tdr_cmd->cmd_link); | |
679 | writew(0, &tdr_cmd->status); | |
1da177e4 | 680 | |
a197f693 AC |
681 | writew(make16(tdr_cmd), &p->scb->cbl_offset); |
682 | writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ | |
1da177e4 LT |
683 | ni_attn586(); |
684 | ||
a197f693 | 685 | wait_for_stat_compl(tdr_cmd); |
1da177e4 | 686 | |
a197f693 AC |
687 | if (!(readw(&tdr_cmd->cmd_status) & STAT_COMPL)) |
688 | printk(KERN_ERR "%s: Problems while running the TDR.\n", | |
689 | dev->name); | |
690 | else { | |
691 | udelay(16); | |
692 | result = readw(&tdr_cmd->status); | |
693 | writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc); | |
1da177e4 LT |
694 | ni_attn586(); /* ack the interrupts */ |
695 | ||
a197f693 | 696 | if (result & TDR_LNK_OK) |
1da177e4 | 697 | ; |
a197f693 AC |
698 | else if (result & TDR_XCVR_PRB) |
699 | printk(KERN_ERR "%s: TDR: Transceiver problem. Check the cable(s)!\n", | |
700 | dev->name); | |
701 | else if (result & TDR_ET_OPN) | |
702 | printk(KERN_ERR "%s: TDR: No correct termination %d clocks away.\n", | |
703 | dev->name, result & TDR_TIMEMASK); | |
704 | else if (result & TDR_ET_SRT) { | |
705 | /* time == 0 -> strange :-) */ | |
706 | if (result & TDR_TIMEMASK) | |
707 | printk(KERN_ERR "%s: TDR: Detected a short circuit %d clocks away.\n", | |
708 | dev->name, result & TDR_TIMEMASK); | |
709 | } else | |
710 | printk(KERN_ERR "%s: TDR: Unknown status %04x\n", | |
711 | dev->name, result); | |
1da177e4 LT |
712 | } |
713 | ||
714 | /* | |
715 | * Multicast setup | |
716 | */ | |
a197f693 | 717 | if (num_addrs && !(dev->flags & IFF_PROMISC)) { |
2d76c267 | 718 | mc_cmd = ptr; |
a197f693 AC |
719 | writew(0, &mc_cmd->cmd_status); |
720 | writew(CMD_MCSETUP | CMD_LAST, &mc_cmd->cmd_cmd); | |
721 | writew(0xffff, &mc_cmd->cmd_link); | |
722 | writew(num_addrs * 6, &mc_cmd->mc_cnt); | |
1da177e4 | 723 | |
a197f693 | 724 | for (i = 0; i < num_addrs; i++, dmi = dmi->next) |
2d76c267 | 725 | memcpy_toio(mc_cmd->mc_list[i], |
a197f693 | 726 | dmi->dmi_addr, 6); |
1da177e4 | 727 | |
a197f693 AC |
728 | writew(make16(mc_cmd), &p->scb->cbl_offset); |
729 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 LT |
730 | ni_attn586(); |
731 | ||
a197f693 | 732 | wait_for_stat_compl(mc_cmd); |
1da177e4 | 733 | |
a197f693 AC |
734 | if ((readw(&mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) |
735 | != (STAT_COMPL|STAT_OK)) | |
736 | printk(KERN_ERR "%s: Can't apply multicast-address-list.\n", dev->name); | |
1da177e4 LT |
737 | } |
738 | ||
739 | /* | |
740 | * alloc nop/xmit-cmds | |
741 | */ | |
742 | #if (NUM_XMIT_BUFFS == 1) | |
a197f693 | 743 | for (i = 0; i < 2; i++) { |
2d76c267 | 744 | p->nop_cmds[i] = ptr; |
a197f693 AC |
745 | writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd); |
746 | writew(0, &p->nop_cmds[i]->cmd_status); | |
747 | writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link); | |
2d76c267 | 748 | ptr = ptr + sizeof(struct nop_cmd_struct); |
1da177e4 LT |
749 | } |
750 | #else | |
a197f693 | 751 | for (i = 0; i < NUM_XMIT_BUFFS; i++) { |
2d76c267 | 752 | p->nop_cmds[i] = ptr; |
a197f693 AC |
753 | writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd); |
754 | writew(0, &p->nop_cmds[i]->cmd_status); | |
755 | writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link); | |
2d76c267 | 756 | ptr = ptr + sizeof(struct nop_cmd_struct); |
1da177e4 LT |
757 | } |
758 | #endif | |
759 | ||
2d76c267 | 760 | ptr = alloc_rfa(dev, ptr); /* init receive-frame-area */ |
1da177e4 LT |
761 | |
762 | /* | |
763 | * alloc xmit-buffs / init xmit_cmds | |
764 | */ | |
a197f693 AC |
765 | for (i = 0; i < NUM_XMIT_BUFFS; i++) { |
766 | /* Transmit cmd/buff 0 */ | |
2d76c267 AV |
767 | p->xmit_cmds[i] = ptr; |
768 | ptr = ptr + sizeof(struct transmit_cmd_struct); | |
769 | p->xmit_cbuffs[i] = ptr; /* char-buffs */ | |
770 | ptr = ptr + XMIT_BUFF_SIZE; | |
771 | p->xmit_buffs[i] = ptr; /* TBD */ | |
772 | ptr = ptr + sizeof(struct tbd_struct); | |
773 | if ((void __iomem *)ptr > (void __iomem *)p->iscp) { | |
a197f693 AC |
774 | printk(KERN_ERR "%s: not enough shared-mem for your configuration!\n", |
775 | dev->name); | |
1da177e4 LT |
776 | return 1; |
777 | } | |
2d76c267 | 778 | memset_io(p->xmit_cmds[i], 0, |
a197f693 | 779 | sizeof(struct transmit_cmd_struct)); |
2d76c267 | 780 | memset_io(p->xmit_buffs[i], 0, |
a197f693 AC |
781 | sizeof(struct tbd_struct)); |
782 | writew(make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]), | |
783 | &p->xmit_cmds[i]->cmd_link); | |
784 | writew(STAT_COMPL, &p->xmit_cmds[i]->cmd_status); | |
785 | writew(CMD_XMIT|CMD_INT, &p->xmit_cmds[i]->cmd_cmd); | |
786 | writew(make16(p->xmit_buffs[i]), &p->xmit_cmds[i]->tbd_offset); | |
787 | writew(0xffff, &p->xmit_buffs[i]->next); | |
788 | writel(make24(p->xmit_cbuffs[i]), &p->xmit_buffs[i]->buffer); | |
1da177e4 LT |
789 | } |
790 | ||
791 | p->xmit_count = 0; | |
792 | p->xmit_last = 0; | |
793 | #ifndef NO_NOPCOMMANDS | |
794 | p->nop_point = 0; | |
795 | #endif | |
796 | ||
797 | /* | |
798 | * 'start transmitter' | |
799 | */ | |
800 | #ifndef NO_NOPCOMMANDS | |
a197f693 AC |
801 | writew(make16(p->nop_cmds[0]), &p->scb->cbl_offset); |
802 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 | 803 | ni_attn586(); |
a197f693 | 804 | wait_for_scb_cmd(dev); |
1da177e4 | 805 | #else |
a197f693 AC |
806 | writew(make16(p->xmit_cmds[0]), &p->xmit_cmds[0]->cmd_link); |
807 | writew(CMD_XMIT | CMD_SUSPEND | CMD_INT, &p->xmit_cmds[0]->cmd_cmd); | |
1da177e4 LT |
808 | #endif |
809 | ||
810 | /* | |
811 | * ack. interrupts | |
812 | */ | |
a197f693 | 813 | writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc); |
1da177e4 | 814 | ni_attn586(); |
a197f693 | 815 | udelay(16); |
1da177e4 LT |
816 | |
817 | ni_enaint(); | |
818 | ||
819 | return 0; | |
820 | } | |
821 | ||
822 | /****************************************************** | |
823 | * This is a helper routine for ni52_rnr_int() and init586(). | |
824 | * It sets up the Receive Frame Area (RFA). | |
825 | */ | |
826 | ||
2d76c267 | 827 | static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr) |
1da177e4 | 828 | { |
2d76c267 AV |
829 | struct rfd_struct __iomem *rfd = ptr; |
830 | struct rbd_struct __iomem *rbd; | |
1da177e4 LT |
831 | int i; |
832 | struct priv *p = (struct priv *) dev->priv; | |
833 | ||
2d76c267 | 834 | memset_io(rfd, 0, |
a197f693 | 835 | sizeof(struct rfd_struct) * (p->num_recv_buffs + rfdadd)); |
1da177e4 LT |
836 | p->rfd_first = rfd; |
837 | ||
a197f693 AC |
838 | for (i = 0; i < (p->num_recv_buffs + rfdadd); i++) { |
839 | writew(make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd)), | |
840 | &rfd[i].next); | |
841 | writew(0xffff, &rfd[i].rbd_offset); | |
1da177e4 | 842 | } |
a197f693 AC |
843 | /* RU suspend */ |
844 | writeb(RFD_SUSP, &rfd[p->num_recv_buffs-1+rfdadd].last); | |
1da177e4 | 845 | |
2d76c267 | 846 | ptr = rfd + (p->num_recv_buffs + rfdadd); |
1da177e4 | 847 | |
2d76c267 AV |
848 | rbd = ptr; |
849 | ptr = rbd + p->num_recv_buffs; | |
1da177e4 LT |
850 | |
851 | /* clr descriptors */ | |
2d76c267 | 852 | memset_io(rbd, 0, sizeof(struct rbd_struct) * (p->num_recv_buffs)); |
1da177e4 | 853 | |
a197f693 AC |
854 | for (i = 0; i < p->num_recv_buffs; i++) { |
855 | writew(make16(rbd + (i+1) % p->num_recv_buffs), &rbd[i].next); | |
856 | writew(RECV_BUFF_SIZE, &rbd[i].size); | |
857 | writel(make24(ptr), &rbd[i].buffer); | |
2d76c267 | 858 | ptr = ptr + RECV_BUFF_SIZE; |
1da177e4 | 859 | } |
1da177e4 LT |
860 | p->rfd_top = p->rfd_first; |
861 | p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd); | |
862 | ||
a197f693 AC |
863 | writew(make16(p->rfd_first), &p->scb->rfa_offset); |
864 | writew(make16(rbd), &p->rfd_first->rbd_offset); | |
1da177e4 LT |
865 | |
866 | return ptr; | |
867 | } | |
868 | ||
869 | ||
870 | /************************************************** | |
871 | * Interrupt Handler ... | |
872 | */ | |
873 | ||
a197f693 | 874 | static irqreturn_t ni52_interrupt(int irq, void *dev_id) |
1da177e4 LT |
875 | { |
876 | struct net_device *dev = dev_id; | |
a197f693 AC |
877 | unsigned int stat; |
878 | int cnt = 0; | |
1da177e4 LT |
879 | struct priv *p; |
880 | ||
1da177e4 LT |
881 | p = (struct priv *) dev->priv; |
882 | ||
a197f693 | 883 | if (debuglevel > 1) |
1da177e4 LT |
884 | printk("I"); |
885 | ||
a197f693 | 886 | spin_lock(&p->spinlock); |
1da177e4 | 887 | |
a197f693 AC |
888 | wait_for_scb_cmd(dev); /* wait for last command */ |
889 | ||
890 | while ((stat = readb(&p->scb->cus) & STAT_MASK)) { | |
891 | writeb(stat, &p->scb->cmd_cuc); | |
1da177e4 LT |
892 | ni_attn586(); |
893 | ||
a197f693 | 894 | if (stat & STAT_FR) /* received a frame */ |
1da177e4 LT |
895 | ni52_rcv_int(dev); |
896 | ||
a197f693 | 897 | if (stat & STAT_RNR) { /* RU went 'not ready' */ |
1da177e4 | 898 | printk("(R)"); |
a197f693 AC |
899 | if (readb(&p->scb->rus) & RU_SUSPEND) { |
900 | /* special case: RU_SUSPEND */ | |
901 | wait_for_scb_cmd(dev); | |
05bd831f | 902 | writeb(RUC_RESUME, &p->scb->cmd_ruc); |
1da177e4 | 903 | ni_attn586(); |
a197f693 AC |
904 | wait_for_scb_cmd_ruc(dev); |
905 | } else { | |
906 | printk(KERN_ERR "%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n", | |
907 | dev->name, stat, readb(&p->scb->rus)); | |
1da177e4 LT |
908 | ni52_rnr_int(dev); |
909 | } | |
910 | } | |
911 | ||
a197f693 AC |
912 | /* Command with I-bit set complete */ |
913 | if (stat & STAT_CX) | |
1da177e4 LT |
914 | ni52_xmt_int(dev); |
915 | ||
916 | #ifndef NO_NOPCOMMANDS | |
a197f693 AC |
917 | if (stat & STAT_CNA) { /* CU went 'not ready' */ |
918 | if (netif_running(dev)) | |
919 | printk(KERN_ERR "%s: oops! CU has left active state. stat: %04x/%02x.\n", | |
920 | dev->name, stat, readb(&p->scb->cus)); | |
1da177e4 LT |
921 | } |
922 | #endif | |
923 | ||
a197f693 AC |
924 | if (debuglevel > 1) |
925 | printk("%d", cnt++); | |
1da177e4 | 926 | |
a197f693 AC |
927 | /* Wait for ack. (ni52_xmt_int can be faster than ack!!) */ |
928 | wait_for_scb_cmd(dev); | |
05bd831f | 929 | if (readb(&p->scb->cmd_cuc)) { /* timed out? */ |
a197f693 AC |
930 | printk(KERN_ERR "%s: Acknowledge timed out.\n", |
931 | dev->name); | |
1da177e4 LT |
932 | ni_disint(); |
933 | break; | |
934 | } | |
935 | } | |
a197f693 | 936 | spin_unlock(&p->spinlock); |
1da177e4 | 937 | |
a197f693 | 938 | if (debuglevel > 1) |
1da177e4 LT |
939 | printk("i"); |
940 | return IRQ_HANDLED; | |
941 | } | |
942 | ||
943 | /******************************************************* | |
944 | * receive-interrupt | |
945 | */ | |
946 | ||
947 | static void ni52_rcv_int(struct net_device *dev) | |
948 | { | |
a197f693 | 949 | int status, cnt = 0; |
1da177e4 LT |
950 | unsigned short totlen; |
951 | struct sk_buff *skb; | |
2d76c267 | 952 | struct rbd_struct __iomem *rbd; |
a197f693 | 953 | struct priv *p = (struct priv *)dev->priv; |
1da177e4 | 954 | |
a197f693 | 955 | if (debuglevel > 0) |
1da177e4 LT |
956 | printk("R"); |
957 | ||
a197f693 | 958 | for (; (status = readb(&p->rfd_top->stat_high)) & RFD_COMPL;) { |
05bd831f | 959 | rbd = make32(readw(&p->rfd_top->rbd_offset)); |
a197f693 AC |
960 | if (status & RFD_OK) { /* frame received without error? */ |
961 | totlen = readw(&rbd->status); | |
962 | if (totlen & RBD_LAST) { | |
963 | /* the first and the last buffer? */ | |
964 | totlen &= RBD_MASK; /* length of this frame */ | |
965 | writew(0x00, &rbd->status); | |
966 | skb = (struct sk_buff *)dev_alloc_skb(totlen+2); | |
967 | if (skb != NULL) { | |
968 | skb_reserve(skb, 2); | |
969 | skb_put(skb, totlen); | |
05bd831f | 970 | memcpy_fromio(skb->data, p->base + readl(&rbd->buffer), totlen); |
a197f693 AC |
971 | skb->protocol = eth_type_trans(skb, dev); |
972 | netif_rx(skb); | |
973 | dev->last_rx = jiffies; | |
974 | p->stats.rx_packets++; | |
975 | p->stats.rx_bytes += totlen; | |
976 | } else | |
977 | p->stats.rx_dropped++; | |
978 | } else { | |
979 | int rstat; | |
980 | /* free all RBD's until RBD_LAST is set */ | |
981 | totlen = 0; | |
982 | while (!((rstat = readw(&rbd->status)) & RBD_LAST)) { | |
983 | totlen += rstat & RBD_MASK; | |
984 | if (!rstat) { | |
985 | printk(KERN_ERR "%s: Whoops .. no end mark in RBD list\n", dev->name); | |
986 | break; | |
1da177e4 | 987 | } |
a197f693 | 988 | writew(0, &rbd->status); |
05bd831f | 989 | rbd = make32(readw(&rbd->next)); |
1da177e4 | 990 | } |
a197f693 AC |
991 | totlen += rstat & RBD_MASK; |
992 | writew(0, &rbd->status); | |
993 | printk(KERN_ERR "%s: received oversized frame! length: %d\n", | |
994 | dev->name, totlen); | |
995 | p->stats.rx_dropped++; | |
1da177e4 | 996 | } |
a197f693 AC |
997 | } else {/* frame !(ok), only with 'save-bad-frames' */ |
998 | printk(KERN_ERR "%s: oops! rfd-error-status: %04x\n", | |
999 | dev->name, status); | |
1da177e4 LT |
1000 | p->stats.rx_errors++; |
1001 | } | |
a197f693 AC |
1002 | writeb(0, &p->rfd_top->stat_high); |
1003 | writeb(RFD_SUSP, &p->rfd_top->last); /* maybe exchange by RFD_LAST */ | |
1004 | writew(0xffff, &p->rfd_top->rbd_offset); | |
1005 | writeb(0, &p->rfd_last->last); /* delete RFD_SUSP */ | |
1da177e4 | 1006 | p->rfd_last = p->rfd_top; |
05bd831f | 1007 | p->rfd_top = make32(readw(&p->rfd_top->next)); /* step to next RFD */ |
a197f693 | 1008 | writew(make16(p->rfd_top), &p->scb->rfa_offset); |
1da177e4 | 1009 | |
a197f693 AC |
1010 | if (debuglevel > 0) |
1011 | printk("%d", cnt++); | |
1da177e4 LT |
1012 | } |
1013 | ||
a197f693 AC |
1014 | if (automatic_resume) { |
1015 | wait_for_scb_cmd(dev); | |
1016 | writeb(RUC_RESUME, &p->scb->cmd_ruc); | |
1da177e4 | 1017 | ni_attn586(); |
a197f693 | 1018 | wait_for_scb_cmd_ruc(dev); |
1da177e4 LT |
1019 | } |
1020 | ||
1021 | #ifdef WAIT_4_BUSY | |
1022 | { | |
1023 | int i; | |
a197f693 AC |
1024 | for (i = 0; i < 1024; i++) { |
1025 | if (p->rfd_top->status) | |
1da177e4 | 1026 | break; |
a197f693 AC |
1027 | udelay(16); |
1028 | if (i == 1023) | |
1029 | printk(KERN_ERR "%s: RU hasn't fetched next RFD (not busy/complete)\n", dev->name); | |
1da177e4 LT |
1030 | } |
1031 | } | |
1032 | #endif | |
a197f693 | 1033 | if (debuglevel > 0) |
1da177e4 LT |
1034 | printk("r"); |
1035 | } | |
1036 | ||
1037 | /********************************************************** | |
1038 | * handle 'Receiver went not ready'. | |
1039 | */ | |
1040 | ||
1041 | static void ni52_rnr_int(struct net_device *dev) | |
1042 | { | |
1043 | struct priv *p = (struct priv *) dev->priv; | |
1044 | ||
1045 | p->stats.rx_errors++; | |
1046 | ||
a197f693 AC |
1047 | wait_for_scb_cmd(dev); /* wait for the last cmd, WAIT_4_FULLSTAT?? */ |
1048 | writeb(RUC_ABORT, &p->scb->cmd_ruc); /* usually the RU is in the 'no resource'-state .. abort it now. */ | |
1da177e4 | 1049 | ni_attn586(); |
a197f693 | 1050 | wait_for_scb_cmd_ruc(dev); /* wait for accept cmd. */ |
1da177e4 | 1051 | |
2d76c267 | 1052 | alloc_rfa(dev, p->rfd_first); |
a197f693 | 1053 | /* maybe add a check here, before restarting the RU */ |
1da177e4 LT |
1054 | startrecv586(dev); /* restart RU */ |
1055 | ||
05bd831f AV |
1056 | printk(KERN_ERR "%s: Receive-Unit restarted. Status: %04x\n", |
1057 | dev->name, readb(&p->scb->rus)); | |
1da177e4 LT |
1058 | |
1059 | } | |
1060 | ||
1061 | /********************************************************** | |
1062 | * handle xmit - interrupt | |
1063 | */ | |
1064 | ||
1065 | static void ni52_xmt_int(struct net_device *dev) | |
1066 | { | |
1067 | int status; | |
1068 | struct priv *p = (struct priv *) dev->priv; | |
1069 | ||
a197f693 | 1070 | if (debuglevel > 0) |
1da177e4 LT |
1071 | printk("X"); |
1072 | ||
a197f693 AC |
1073 | status = readw(&p->xmit_cmds[p->xmit_last]->cmd_status); |
1074 | if (!(status & STAT_COMPL)) | |
1075 | printk(KERN_ERR "%s: strange .. xmit-int without a 'COMPLETE'\n", dev->name); | |
1da177e4 | 1076 | |
a197f693 | 1077 | if (status & STAT_OK) { |
1da177e4 LT |
1078 | p->stats.tx_packets++; |
1079 | p->stats.collisions += (status & TCMD_MAXCOLLMASK); | |
a197f693 | 1080 | } else { |
1da177e4 | 1081 | p->stats.tx_errors++; |
a197f693 AC |
1082 | if (status & TCMD_LATECOLL) { |
1083 | printk(KERN_ERR "%s: late collision detected.\n", | |
1084 | dev->name); | |
1da177e4 | 1085 | p->stats.collisions++; |
a197f693 | 1086 | } else if (status & TCMD_NOCARRIER) { |
1da177e4 | 1087 | p->stats.tx_carrier_errors++; |
a197f693 AC |
1088 | printk(KERN_ERR "%s: no carrier detected.\n", |
1089 | dev->name); | |
1090 | } else if (status & TCMD_LOSTCTS) | |
1091 | printk(KERN_ERR "%s: loss of CTS detected.\n", | |
1092 | dev->name); | |
1093 | else if (status & TCMD_UNDERRUN) { | |
1da177e4 | 1094 | p->stats.tx_fifo_errors++; |
a197f693 AC |
1095 | printk(KERN_ERR "%s: DMA underrun detected.\n", |
1096 | dev->name); | |
1097 | } else if (status & TCMD_MAXCOLL) { | |
1098 | printk(KERN_ERR "%s: Max. collisions exceeded.\n", | |
1099 | dev->name); | |
1da177e4 LT |
1100 | p->stats.collisions += 16; |
1101 | } | |
1102 | } | |
1da177e4 | 1103 | #if (NUM_XMIT_BUFFS > 1) |
a197f693 | 1104 | if ((++p->xmit_last) == NUM_XMIT_BUFFS) |
1da177e4 LT |
1105 | p->xmit_last = 0; |
1106 | #endif | |
1107 | netif_wake_queue(dev); | |
1108 | } | |
1109 | ||
1110 | /*********************************************************** | |
1111 | * (re)start the receiver | |
1112 | */ | |
1113 | ||
1114 | static void startrecv586(struct net_device *dev) | |
1115 | { | |
1116 | struct priv *p = (struct priv *) dev->priv; | |
1117 | ||
a197f693 AC |
1118 | wait_for_scb_cmd(dev); |
1119 | wait_for_scb_cmd_ruc(dev); | |
1120 | writew(make16(p->rfd_first), &p->scb->rfa_offset); | |
1121 | writeb(RUC_START, &p->scb->cmd_ruc); | |
1da177e4 | 1122 | ni_attn586(); /* start cmd. */ |
a197f693 AC |
1123 | wait_for_scb_cmd_ruc(dev); |
1124 | /* wait for accept cmd. (no timeout!!) */ | |
1da177e4 LT |
1125 | } |
1126 | ||
1127 | static void ni52_timeout(struct net_device *dev) | |
1128 | { | |
1129 | struct priv *p = (struct priv *) dev->priv; | |
1130 | #ifndef NO_NOPCOMMANDS | |
a197f693 | 1131 | if (readb(&p->scb->cus) & CU_ACTIVE) { /* COMMAND-UNIT active? */ |
1da177e4 LT |
1132 | netif_wake_queue(dev); |
1133 | #ifdef DEBUG | |
a197f693 AC |
1134 | printk(KERN_ERR "%s: strange ... timeout with CU active?!?\n", |
1135 | dev->name); | |
1136 | printk(KERN_ERR "%s: X0: %04x N0: %04x N1: %04x %d\n", | |
1137 | dev->name, (int)p->xmit_cmds[0]->cmd_status, | |
1138 | readw(&p->nop_cmds[0]->cmd_status), | |
1139 | readw(&p->nop_cmds[1]->cmd_status), | |
1140 | p->nop_point); | |
1da177e4 | 1141 | #endif |
a197f693 | 1142 | writeb(CUC_ABORT, &p->scb->cmd_cuc); |
1da177e4 | 1143 | ni_attn586(); |
a197f693 AC |
1144 | wait_for_scb_cmd(dev); |
1145 | writew(make16(p->nop_cmds[p->nop_point]), &p->scb->cbl_offset); | |
1146 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 | 1147 | ni_attn586(); |
a197f693 | 1148 | wait_for_scb_cmd(dev); |
1da177e4 LT |
1149 | dev->trans_start = jiffies; |
1150 | return 0; | |
1151 | } | |
1152 | #endif | |
1153 | { | |
1154 | #ifdef DEBUG | |
a197f693 AC |
1155 | printk(KERN_ERR "%s: xmitter timed out, try to restart! stat: %02x\n", |
1156 | dev->name, readb(&p->scb->cus)); | |
1157 | printk(KERN_ERR "%s: command-stats: %04x %04x\n", | |
1158 | dev->name, | |
1159 | readw(&p->xmit_cmds[0]->cmd_status), | |
1160 | readw(&p->xmit_cmds[1]->cmd_status)); | |
1161 | printk(KERN_ERR "%s: check, whether you set the right interrupt number!\n", | |
1162 | dev->name); | |
1da177e4 LT |
1163 | #endif |
1164 | ni52_close(dev); | |
1165 | ni52_open(dev); | |
1166 | } | |
1167 | dev->trans_start = jiffies; | |
1168 | } | |
1169 | ||
1170 | /****************************************************** | |
1171 | * send frame | |
1172 | */ | |
1173 | ||
1174 | static int ni52_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1175 | { | |
a197f693 | 1176 | int len, i; |
1da177e4 LT |
1177 | #ifndef NO_NOPCOMMANDS |
1178 | int next_nop; | |
1179 | #endif | |
1180 | struct priv *p = (struct priv *) dev->priv; | |
1181 | ||
a197f693 AC |
1182 | if (skb->len > XMIT_BUFF_SIZE) { |
1183 | printk(KERN_ERR "%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n", dev->name, XMIT_BUFF_SIZE, skb->len); | |
1da177e4 LT |
1184 | return 0; |
1185 | } | |
1186 | ||
1187 | netif_stop_queue(dev); | |
1188 | ||
05bd831f | 1189 | memcpy_toio(p->xmit_cbuffs[p->xmit_count], skb->data, skb->len); |
a197f693 AC |
1190 | len = skb->len; |
1191 | if (len < ETH_ZLEN) { | |
1192 | len = ETH_ZLEN; | |
05bd831f | 1193 | memset_io(p->xmit_cbuffs[p->xmit_count]+skb->len, 0, |
a197f693 | 1194 | len - skb->len); |
1da177e4 | 1195 | } |
1da177e4 LT |
1196 | |
1197 | #if (NUM_XMIT_BUFFS == 1) | |
1198 | # ifdef NO_NOPCOMMANDS | |
1199 | ||
1200 | #ifdef DEBUG | |
05bd831f | 1201 | if (readb(&p->scb->cus) & CU_ACTIVE) { |
a197f693 AC |
1202 | printk(KERN_ERR "%s: Hmmm .. CU is still running and we wanna send a new packet.\n", dev->name); |
1203 | printk(KERN_ERR "%s: stat: %04x %04x\n", | |
1204 | dev->name, readb(&p->scb->cus), | |
1205 | readw(&p->xmit_cmds[0]->cmd_status)); | |
1206 | } | |
1da177e4 | 1207 | #endif |
05bd831f | 1208 | writew(TBD_LAST | len, &p->xmit_buffs[0]->size); |
a197f693 AC |
1209 | for (i = 0; i < 16; i++) { |
1210 | writew(0, &p->xmit_cmds[0]->cmd_status); | |
1211 | wait_for_scb_cmd(dev); | |
1212 | if ((readb(&p->scb->cus) & CU_STATUS) == CU_SUSPEND) | |
1213 | writeb(CUC_RESUME, &p->scb->cmd_cuc); | |
1214 | else { | |
1215 | writew(make16(p->xmit_cmds[0]), &p->scb->cbl_offset); | |
1216 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 | 1217 | } |
a197f693 | 1218 | ni_attn586(); |
1da177e4 | 1219 | dev->trans_start = jiffies; |
a197f693 AC |
1220 | if (!i) |
1221 | dev_kfree_skb(skb); | |
1222 | wait_for_scb_cmd(dev); | |
1223 | /* test it, because CU sometimes doesn't start immediately */ | |
1224 | if (readb(&p->scb->cus) & CU_ACTIVE) | |
1225 | break; | |
1226 | if (readw(&p->xmit_cmds[0]->cmd_status)) | |
1227 | break; | |
1228 | if (i == 15) | |
1229 | printk(KERN_WARNING "%s: Can't start transmit-command.\n", dev->name); | |
1230 | } | |
1231 | # else | |
1232 | next_nop = (p->nop_point + 1) & 0x1; | |
1233 | writew(TBD_LAST | len, &p->xmit_buffs[0]->size); | |
1234 | writew(make16(p->nop_cmds[next_nop]), &p->xmit_cmds[0]->cmd_link); | |
1235 | writew(make16(p->nop_cmds[next_nop]), | |
1236 | &p->nop_cmds[next_nop]->cmd_link); | |
1237 | writew(0, &p->xmit_cmds[0]->cmd_status); | |
1238 | writew(0, &p->nop_cmds[next_nop]->cmd_status); | |
1239 | ||
1240 | writew(make16(p->xmit_cmds[0]), &p->nop_cmds[p->nop_point]->cmd_link); | |
1241 | dev->trans_start = jiffies; | |
1242 | p->nop_point = next_nop; | |
1243 | dev_kfree_skb(skb); | |
1da177e4 LT |
1244 | # endif |
1245 | #else | |
a197f693 AC |
1246 | writew(TBD_LAST | len, &p->xmit_buffs[p->xmit_count]->size); |
1247 | next_nop = p->xmit_count + 1 | |
1248 | if (next_nop == NUM_XMIT_BUFFS) | |
1249 | next_nop = 0; | |
1250 | writew(0, &p->xmit_cmds[p->xmit_count]->cmd_status); | |
1251 | /* linkpointer of xmit-command already points to next nop cmd */ | |
1252 | writew(make16(p->nop_cmds[next_nop]), | |
1253 | &p->nop_cmds[next_nop]->cmd_link); | |
1254 | writew(0, &p->nop_cmds[next_nop]->cmd_status); | |
1255 | writew(make16(p->xmit_cmds[p->xmit_count]), | |
1256 | &p->nop_cmds[p->xmit_count]->cmd_link); | |
1257 | dev->trans_start = jiffies; | |
1258 | p->xmit_count = next_nop; | |
1259 | { | |
1260 | unsigned long flags; | |
1261 | spin_lock_irqsave(&p->spinlock); | |
1262 | if (p->xmit_count != p->xmit_last) | |
1263 | netif_wake_queue(dev); | |
1264 | spin_unlock_irqrestore(&p->spinlock); | |
1da177e4 | 1265 | } |
a197f693 AC |
1266 | dev_kfree_skb(skb); |
1267 | #endif | |
1da177e4 LT |
1268 | return 0; |
1269 | } | |
1270 | ||
1271 | /******************************************* | |
1272 | * Someone wanna have the statistics | |
1273 | */ | |
1274 | ||
1275 | static struct net_device_stats *ni52_get_stats(struct net_device *dev) | |
1276 | { | |
1277 | struct priv *p = (struct priv *) dev->priv; | |
a197f693 AC |
1278 | unsigned short crc, aln, rsc, ovrn; |
1279 | ||
1280 | /* Get error-statistics from the ni82586 */ | |
1281 | crc = readw(&p->scb->crc_errs); | |
1282 | writew(0, &p->scb->crc_errs); | |
1283 | aln = readw(&p->scb->aln_errs); | |
1284 | writew(0, &p->scb->aln_errs); | |
1285 | rsc = readw(&p->scb->rsc_errs); | |
1286 | writew(0, &p->scb->rsc_errs); | |
1287 | ovrn = readw(&p->scb->ovrn_errs); | |
1288 | writew(0, &p->scb->ovrn_errs); | |
1da177e4 LT |
1289 | |
1290 | p->stats.rx_crc_errors += crc; | |
1291 | p->stats.rx_fifo_errors += ovrn; | |
1292 | p->stats.rx_frame_errors += aln; | |
1293 | p->stats.rx_dropped += rsc; | |
1294 | ||
1295 | return &p->stats; | |
1296 | } | |
1297 | ||
1298 | /******************************************************** | |
1299 | * Set MC list .. | |
1300 | */ | |
1301 | ||
1302 | static void set_multicast_list(struct net_device *dev) | |
1303 | { | |
1304 | netif_stop_queue(dev); | |
1305 | ni_disint(); | |
1306 | alloc586(dev); | |
1307 | init586(dev); | |
1308 | startrecv586(dev); | |
1309 | ni_enaint(); | |
1310 | netif_wake_queue(dev); | |
1311 | } | |
1312 | ||
1313 | #ifdef MODULE | |
1314 | static struct net_device *dev_ni52; | |
1315 | ||
1316 | module_param(io, int, 0); | |
1317 | module_param(irq, int, 0); | |
1318 | module_param(memstart, long, 0); | |
1319 | module_param(memend, long, 0); | |
1320 | MODULE_PARM_DESC(io, "NI5210 I/O base address,required"); | |
1321 | MODULE_PARM_DESC(irq, "NI5210 IRQ number,required"); | |
1322 | MODULE_PARM_DESC(memstart, "NI5210 memory base address,required"); | |
1323 | MODULE_PARM_DESC(memend, "NI5210 memory end address,required"); | |
1324 | ||
19a8664d | 1325 | int __init init_module(void) |
1da177e4 | 1326 | { |
a197f693 AC |
1327 | if (io <= 0x0 || !memend || !memstart || irq < 2) { |
1328 | printk(KERN_ERR "ni52: Autoprobing not allowed for modules.\n"); | |
1329 | printk(KERN_ERR "ni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n"); | |
1da177e4 LT |
1330 | return -ENODEV; |
1331 | } | |
1332 | dev_ni52 = ni52_probe(-1); | |
1333 | if (IS_ERR(dev_ni52)) | |
1334 | return PTR_ERR(dev_ni52); | |
1335 | return 0; | |
1336 | } | |
1337 | ||
afc8eb46 | 1338 | void __exit cleanup_module(void) |
1da177e4 | 1339 | { |
176f65f3 | 1340 | struct priv *p = dev_ni52->priv; |
1da177e4 | 1341 | unregister_netdev(dev_ni52); |
176f65f3 | 1342 | iounmap(p->mapped); |
1da177e4 LT |
1343 | release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE); |
1344 | free_netdev(dev_ni52); | |
1345 | } | |
1346 | #endif /* MODULE */ | |
1347 | ||
1da177e4 LT |
1348 | MODULE_LICENSE("GPL"); |
1349 | ||
1350 | /* | |
1351 | * END: linux/drivers/net/ni52.c | |
1352 | */ |