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!) | |
1da177e4 LT |
12 | * run with e.g: |
13 | * insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000 | |
14 | * | |
15 | * CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!. | |
16 | * | |
17 | * If you find a bug, please report me: | |
18 | * The kernel panic output and any kmsg from the ni52 driver | |
19 | * the ni5210-driver-version and the linux-kernel version | |
20 | * how many shared memory (memsize) on the netcard, | |
21 | * bootprom: yes/no, base_addr, mem_start | |
22 | * maybe the ni5210-card revision and the i82586 version | |
23 | * | |
24 | * autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340 | |
25 | * mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000, | |
26 | * 0xd8000,0xcc000,0xce000,0xda000,0xdc000 | |
27 | * | |
28 | * sources: | |
29 | * skeleton.c from Donald Becker | |
30 | * | |
31 | * I have also done a look in the following sources: (mail me if you need them) | |
32 | * crynwr-packet-driver by Russ Nelson | |
33 | * Garret A. Wollman's (fourth) i82586-driver for BSD | |
a197f693 AC |
34 | * (before getting an i82596 (yes 596 not 586) manual, the existing drivers |
35 | * helped me a lot to understand this tricky chip.) | |
1da177e4 LT |
36 | * |
37 | * Known Problems: | |
38 | * The internal sysbus seems to be slow. So we often lose packets because of | |
39 | * overruns while receiving from a fast remote host. | |
a197f693 AC |
40 | * This can slow down TCP connections. Maybe the newer ni5210 cards are |
41 | * better. My experience is, that if a machine sends with more than about | |
42 | * 500-600K/s the fifo/sysbus overflows. | |
1da177e4 LT |
43 | * |
44 | * IMPORTANT NOTE: | |
45 | * On fast networks, it's a (very) good idea to have 16K shared memory. With | |
a197f693 AC |
46 | * 8K, we can store only 4 receive frames, so it can (easily) happen that a |
47 | * remote machine 'overruns' our system. | |
1da177e4 LT |
48 | * |
49 | * Known i82586/card problems (I'm sure, there are many more!): | |
50 | * Running the NOP-mode, the i82586 sometimes seems to forget to report | |
51 | * every xmit-interrupt until we restart the CU. | |
52 | * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit | |
53 | * in the RBD-Struct which indicates an end of the RBD queue. | |
54 | * Instead, the RU fetches another (randomly selected and | |
55 | * usually used) RBD and begins to fill it. (Maybe, this happens only if | |
56 | * the last buffer from the previous RFD fits exact into the queue and | |
57 | * the next RFD can't fetch an initial RBD. Anyone knows more? ) | |
58 | * | |
59 | * results from ftp performance tests with Linux 1.2.5 | |
60 | * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s) | |
a197f693 AC |
61 | * sending in NOP-mode: peak performance up to 530K/s (but better don't |
62 | * run this mode) | |
1da177e4 LT |
63 | */ |
64 | ||
65 | /* | |
66 | * 29.Sept.96: virt_to_bus changes for new memory scheme | |
67 | * 19.Feb.96: more Mcast changes, module support (MH) | |
68 | * | |
69 | * 18.Nov.95: Mcast changes (AC). | |
70 | * | |
71 | * 23.April.95: fixed(?) receiving problems by configuring a RFD more | |
72 | * than the number of RBD's. Can maybe cause other problems. | |
73 | * 18.April.95: Added MODULE support (MH) | |
74 | * 17.April.95: MC related changes in init586() and set_multicast_list(). | |
75 | * removed use of 'jiffies' in init586() (MH) | |
76 | * | |
77 | * 19.Sep.94: Added Multicast support (not tested yet) (MH) | |
78 | * | |
79 | * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling. | |
80 | * Now, every RFD has exact one RBD. (MH) | |
81 | * | |
82 | * 14.Sep.94: added promiscuous mode, a few cleanups (MH) | |
83 | * | |
84 | * 19.Aug.94: changed request_irq() parameter (MH) | |
85 | * | |
86 | * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH) | |
87 | * | |
88 | * 19.July.94: lotsa cleanups .. (MH) | |
89 | * | |
90 | * 17.July.94: some patches ... verified to run with 1.1.29 (MH) | |
91 | * | |
92 | * 4.July.94: patches for Linux 1.1.24 (MH) | |
93 | * | |
94 | * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH) | |
95 | * | |
a197f693 AC |
96 | * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff, |
97 | * too (MH) | |
1da177e4 LT |
98 | * |
99 | * < 30.Sep.93: first versions | |
100 | */ | |
101 | ||
102 | static int debuglevel; /* debug-printk 0: off 1: a few 2: more */ | |
103 | static int automatic_resume; /* experimental .. better should be zero */ | |
104 | static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */ | |
a197f693 | 105 | static int fifo = 0x8; /* don't change */ |
1da177e4 | 106 | |
1da177e4 LT |
107 | #include <linux/module.h> |
108 | #include <linux/kernel.h> | |
109 | #include <linux/string.h> | |
110 | #include <linux/errno.h> | |
111 | #include <linux/ioport.h> | |
1da177e4 LT |
112 | #include <linux/interrupt.h> |
113 | #include <linux/delay.h> | |
114 | #include <linux/init.h> | |
115 | #include <linux/bitops.h> | |
116 | #include <asm/io.h> | |
117 | ||
118 | #include <linux/netdevice.h> | |
119 | #include <linux/etherdevice.h> | |
120 | #include <linux/skbuff.h> | |
121 | ||
122 | #include "ni52.h" | |
123 | ||
124 | #define DRV_NAME "ni52" | |
125 | ||
126 | #define DEBUG /* debug on */ | |
127 | #define SYSBUSVAL 1 /* 8 Bit */ | |
128 | ||
a197f693 AC |
129 | #define ni_attn586() { outb(0, dev->base_addr + NI52_ATTENTION); } |
130 | #define ni_reset586() { outb(0, dev->base_addr + NI52_RESET); } | |
131 | #define ni_disint() { outb(0, dev->base_addr + NI52_INTDIS); } | |
132 | #define ni_enaint() { outb(0, dev->base_addr + NI52_INTENA); } | |
1da177e4 | 133 | |
05bd831f | 134 | #define make32(ptr16) ((void __iomem *)(p->memtop + (short) (ptr16))) |
e06ee2bb AV |
135 | #define make24(ptr32) ((char __iomem *)(ptr32)) - p->base |
136 | #define make16(ptr32) ((unsigned short) ((char __iomem *)(ptr32)\ | |
137 | - p->memtop)) | |
1da177e4 LT |
138 | |
139 | /******************* how to calculate the buffers ***************************** | |
140 | ||
141 | * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works | |
142 | * --------------- in a different (more stable?) mode. Only in this mode it's | |
143 | * possible to configure the driver with 'NO_NOPCOMMANDS' | |
144 | ||
145 | sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8; | |
146 | sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT | |
147 | sizeof(rfd) = 24; sizeof(rbd) = 12; | |
148 | sizeof(tbd) = 8; sizeof(transmit_cmd) = 16; | |
149 | sizeof(nop_cmd) = 8; | |
150 | ||
151 | * if you don't know the driver, better do not change these values: */ | |
152 | ||
153 | #define RECV_BUFF_SIZE 1524 /* slightly oversized */ | |
154 | #define XMIT_BUFF_SIZE 1524 /* slightly oversized */ | |
155 | #define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */ | |
156 | #define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */ | |
157 | #define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */ | |
158 | #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */ | |
159 | ||
160 | /**************************************************************************/ | |
161 | ||
1da177e4 LT |
162 | |
163 | #define NI52_TOTAL_SIZE 16 | |
164 | #define NI52_ADDR0 0x02 | |
165 | #define NI52_ADDR1 0x07 | |
166 | #define NI52_ADDR2 0x01 | |
167 | ||
a197f693 AC |
168 | static int ni52_probe1(struct net_device *dev, int ioaddr); |
169 | static irqreturn_t ni52_interrupt(int irq, void *dev_id); | |
1da177e4 LT |
170 | static int ni52_open(struct net_device *dev); |
171 | static int ni52_close(struct net_device *dev); | |
61357325 | 172 | static netdev_tx_t ni52_send_packet(struct sk_buff *, struct net_device *); |
1da177e4 LT |
173 | static struct net_device_stats *ni52_get_stats(struct net_device *dev); |
174 | static void set_multicast_list(struct net_device *dev); | |
175 | static void ni52_timeout(struct net_device *dev); | |
1da177e4 LT |
176 | |
177 | /* helper-functions */ | |
178 | static int init586(struct net_device *dev); | |
de597146 | 179 | static int check586(struct net_device *dev, unsigned size); |
1da177e4 LT |
180 | static void alloc586(struct net_device *dev); |
181 | static void startrecv586(struct net_device *dev); | |
2d76c267 | 182 | static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr); |
1da177e4 LT |
183 | static void ni52_rcv_int(struct net_device *dev); |
184 | static void ni52_xmt_int(struct net_device *dev); | |
185 | static void ni52_rnr_int(struct net_device *dev); | |
186 | ||
a197f693 | 187 | struct priv { |
e06ee2bb AV |
188 | char __iomem *base; |
189 | char __iomem *mapped; | |
2d76c267 | 190 | char __iomem *memtop; |
a197f693 AC |
191 | spinlock_t spinlock; |
192 | int reset; | |
2d76c267 AV |
193 | struct rfd_struct __iomem *rfd_last, *rfd_top, *rfd_first; |
194 | struct scp_struct __iomem *scp; | |
195 | struct iscp_struct __iomem *iscp; | |
196 | struct scb_struct __iomem *scb; | |
197 | struct tbd_struct __iomem *xmit_buffs[NUM_XMIT_BUFFS]; | |
1da177e4 | 198 | #if (NUM_XMIT_BUFFS == 1) |
2d76c267 AV |
199 | struct transmit_cmd_struct __iomem *xmit_cmds[2]; |
200 | struct nop_cmd_struct __iomem *nop_cmds[2]; | |
1da177e4 | 201 | #else |
2d76c267 AV |
202 | struct transmit_cmd_struct __iomem *xmit_cmds[NUM_XMIT_BUFFS]; |
203 | struct nop_cmd_struct __iomem *nop_cmds[NUM_XMIT_BUFFS]; | |
1da177e4 | 204 | #endif |
a197f693 | 205 | int nop_point, num_recv_buffs; |
2d76c267 | 206 | char __iomem *xmit_cbuffs[NUM_XMIT_BUFFS]; |
a197f693 | 207 | int xmit_count, xmit_last; |
1da177e4 LT |
208 | }; |
209 | ||
a197f693 AC |
210 | /* wait for command with timeout: */ |
211 | static void wait_for_scb_cmd(struct net_device *dev) | |
212 | { | |
4cf1653a | 213 | struct priv *p = netdev_priv(dev); |
a197f693 AC |
214 | int i; |
215 | for (i = 0; i < 16384; i++) { | |
216 | if (readb(&p->scb->cmd_cuc) == 0) | |
217 | break; | |
218 | udelay(4); | |
219 | if (i == 16383) { | |
220 | printk(KERN_ERR "%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n", | |
221 | dev->name, readb(&p->scb->cmd_cuc), readb(&p->scb->cus)); | |
222 | if (!p->reset) { | |
223 | p->reset = 1; | |
224 | ni_reset586(); | |
225 | } | |
226 | } | |
227 | } | |
228 | } | |
229 | ||
230 | static void wait_for_scb_cmd_ruc(struct net_device *dev) | |
231 | { | |
4cf1653a | 232 | struct priv *p = netdev_priv(dev); |
a197f693 AC |
233 | int i; |
234 | for (i = 0; i < 16384; i++) { | |
235 | if (readb(&p->scb->cmd_ruc) == 0) | |
236 | break; | |
237 | udelay(4); | |
238 | if (i == 16383) { | |
239 | printk(KERN_ERR "%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n", | |
05bd831f AV |
240 | dev->name, readb(&p->scb->cmd_ruc), |
241 | readb(&p->scb->rus)); | |
a197f693 AC |
242 | if (!p->reset) { |
243 | p->reset = 1; | |
244 | ni_reset586(); | |
245 | } | |
246 | } | |
247 | } | |
248 | } | |
249 | ||
2d76c267 | 250 | static void wait_for_stat_compl(void __iomem *p) |
a197f693 | 251 | { |
2d76c267 | 252 | struct nop_cmd_struct __iomem *addr = p; |
a197f693 AC |
253 | int i; |
254 | for (i = 0; i < 32767; i++) { | |
255 | if (readw(&((addr)->cmd_status)) & STAT_COMPL) | |
256 | break; | |
257 | udelay(32); | |
258 | } | |
259 | } | |
260 | ||
1da177e4 LT |
261 | /********************************************** |
262 | * close device | |
263 | */ | |
264 | static int ni52_close(struct net_device *dev) | |
265 | { | |
266 | free_irq(dev->irq, dev); | |
1da177e4 | 267 | ni_reset586(); /* the hard way to stop the receiver */ |
1da177e4 | 268 | netif_stop_queue(dev); |
1da177e4 LT |
269 | return 0; |
270 | } | |
271 | ||
272 | /********************************************** | |
273 | * open device | |
274 | */ | |
275 | static int ni52_open(struct net_device *dev) | |
276 | { | |
277 | int ret; | |
278 | ||
279 | ni_disint(); | |
280 | alloc586(dev); | |
281 | init586(dev); | |
282 | startrecv586(dev); | |
283 | ni_enaint(); | |
284 | ||
a0607fd3 | 285 | ret = request_irq(dev->irq, ni52_interrupt, 0, dev->name, dev); |
a197f693 | 286 | if (ret) { |
1da177e4 LT |
287 | ni_reset586(); |
288 | return ret; | |
289 | } | |
1da177e4 | 290 | netif_start_queue(dev); |
1da177e4 LT |
291 | return 0; /* most done by init */ |
292 | } | |
293 | ||
76af5699 AV |
294 | static int check_iscp(struct net_device *dev, void __iomem *addr) |
295 | { | |
296 | struct iscp_struct __iomem *iscp = addr; | |
4cf1653a | 297 | struct priv *p = netdev_priv(dev); |
76af5699 AV |
298 | memset_io(iscp, 0, sizeof(struct iscp_struct)); |
299 | ||
300 | writel(make24(iscp), &p->scp->iscp); | |
301 | writeb(1, &iscp->busy); | |
302 | ||
303 | ni_reset586(); | |
304 | ni_attn586(); | |
305 | mdelay(32); /* wait a while... */ | |
306 | /* i82586 clears 'busy' after successful init */ | |
307 | if (readb(&iscp->busy)) | |
308 | return 0; | |
309 | return 1; | |
310 | } | |
311 | ||
1da177e4 LT |
312 | /********************************************** |
313 | * Check to see if there's an 82586 out there. | |
314 | */ | |
de597146 | 315 | static int check586(struct net_device *dev, unsigned size) |
1da177e4 | 316 | { |
4cf1653a | 317 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
318 | int i; |
319 | ||
176f65f3 AV |
320 | p->mapped = ioremap(dev->mem_start, size); |
321 | if (!p->mapped) | |
322 | return 0; | |
323 | ||
e06ee2bb AV |
324 | p->base = p->mapped + size - 0x01000000; |
325 | p->memtop = p->mapped + size; | |
2d76c267 | 326 | p->scp = (struct scp_struct __iomem *)(p->base + SCP_DEFAULT_ADDRESS); |
7f8cfd56 | 327 | p->scb = (struct scb_struct __iomem *) p->mapped; |
76af5699 | 328 | p->iscp = (struct iscp_struct __iomem *)p->scp - 1; |
2d76c267 | 329 | memset_io(p->scp, 0, sizeof(struct scp_struct)); |
a197f693 AC |
330 | for (i = 0; i < sizeof(struct scp_struct); i++) |
331 | /* memory was writeable? */ | |
2d76c267 | 332 | if (readb((char __iomem *)p->scp + i)) |
176f65f3 | 333 | goto Enodev; |
a197f693 AC |
334 | writeb(SYSBUSVAL, &p->scp->sysbus); /* 1 = 8Bit-Bus, 0 = 16 Bit */ |
335 | if (readb(&p->scp->sysbus) != SYSBUSVAL) | |
176f65f3 | 336 | goto Enodev; |
1da177e4 | 337 | |
76af5699 | 338 | if (!check_iscp(dev, p->mapped)) |
176f65f3 | 339 | goto Enodev; |
76af5699 | 340 | if (!check_iscp(dev, p->iscp)) |
176f65f3 | 341 | goto Enodev; |
1da177e4 | 342 | return 1; |
176f65f3 AV |
343 | Enodev: |
344 | iounmap(p->mapped); | |
345 | return 0; | |
1da177e4 LT |
346 | } |
347 | ||
348 | /****************************************************************** | |
349 | * set iscp at the right place, called by ni52_probe1 and open586. | |
350 | */ | |
351 | static void alloc586(struct net_device *dev) | |
352 | { | |
4cf1653a | 353 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
354 | |
355 | ni_reset586(); | |
a197f693 AC |
356 | mdelay(32); |
357 | ||
a197f693 AC |
358 | memset_io(p->iscp, 0, sizeof(struct iscp_struct)); |
359 | memset_io(p->scp , 0, sizeof(struct scp_struct)); | |
1da177e4 | 360 | |
a197f693 AC |
361 | writel(make24(p->iscp), &p->scp->iscp); |
362 | writeb(SYSBUSVAL, &p->scp->sysbus); | |
363 | writew(make16(p->scb), &p->iscp->scb_offset); | |
1da177e4 | 364 | |
a197f693 | 365 | writeb(1, &p->iscp->busy); |
1da177e4 LT |
366 | ni_reset586(); |
367 | ni_attn586(); | |
368 | ||
a197f693 | 369 | mdelay(32); |
1da177e4 | 370 | |
a197f693 AC |
371 | if (readb(&p->iscp->busy)) |
372 | printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name); | |
1da177e4 | 373 | |
a197f693 | 374 | p->reset = 0; |
1da177e4 | 375 | |
2d76c267 | 376 | memset_io(p->scb, 0, sizeof(struct scb_struct)); |
1da177e4 LT |
377 | } |
378 | ||
379 | /* set: io,irq,memstart,memend or set it when calling insmod */ | |
a197f693 AC |
380 | static int irq = 9; |
381 | static int io = 0x300; | |
1da177e4 LT |
382 | static long memstart; /* e.g 0xd0000 */ |
383 | static long memend; /* e.g 0xd4000 */ | |
384 | ||
385 | /********************************************** | |
386 | * probe the ni5210-card | |
387 | */ | |
388 | struct net_device * __init ni52_probe(int unit) | |
389 | { | |
390 | struct net_device *dev = alloc_etherdev(sizeof(struct priv)); | |
391 | static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0}; | |
176f65f3 | 392 | struct priv *p; |
1da177e4 LT |
393 | int *port; |
394 | int err = 0; | |
395 | ||
396 | if (!dev) | |
397 | return ERR_PTR(-ENOMEM); | |
398 | ||
4cf1653a | 399 | p = netdev_priv(dev); |
176f65f3 | 400 | |
1da177e4 LT |
401 | if (unit >= 0) { |
402 | sprintf(dev->name, "eth%d", unit); | |
403 | netdev_boot_setup_check(dev); | |
404 | io = dev->base_addr; | |
405 | irq = dev->irq; | |
406 | memstart = dev->mem_start; | |
407 | memend = dev->mem_end; | |
408 | } | |
409 | ||
1da177e4 LT |
410 | if (io > 0x1ff) { /* Check a single specified location. */ |
411 | err = ni52_probe1(dev, io); | |
412 | } else if (io > 0) { /* Don't probe at all. */ | |
413 | err = -ENXIO; | |
414 | } else { | |
415 | for (port = ports; *port && ni52_probe1(dev, *port) ; port++) | |
416 | ; | |
417 | if (*port) | |
418 | goto got_it; | |
419 | #ifdef FULL_IO_PROBE | |
420 | for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8) | |
421 | ; | |
422 | if (io < 0x400) | |
423 | goto got_it; | |
424 | #endif | |
425 | err = -ENODEV; | |
426 | } | |
427 | if (err) | |
428 | goto out; | |
429 | got_it: | |
430 | err = register_netdev(dev); | |
431 | if (err) | |
432 | goto out1; | |
433 | return dev; | |
434 | out1: | |
176f65f3 | 435 | iounmap(p->mapped); |
1da177e4 LT |
436 | release_region(dev->base_addr, NI52_TOTAL_SIZE); |
437 | out: | |
438 | free_netdev(dev); | |
439 | return ERR_PTR(err); | |
440 | } | |
441 | ||
2c7669e3 SH |
442 | static const struct net_device_ops ni52_netdev_ops = { |
443 | .ndo_open = ni52_open, | |
444 | .ndo_stop = ni52_close, | |
445 | .ndo_get_stats = ni52_get_stats, | |
446 | .ndo_tx_timeout = ni52_timeout, | |
447 | .ndo_start_xmit = ni52_send_packet, | |
448 | .ndo_set_multicast_list = set_multicast_list, | |
449 | .ndo_change_mtu = eth_change_mtu, | |
450 | .ndo_set_mac_address = eth_mac_addr, | |
451 | .ndo_validate_addr = eth_validate_addr, | |
452 | }; | |
453 | ||
a197f693 | 454 | static int __init ni52_probe1(struct net_device *dev, int ioaddr) |
1da177e4 LT |
455 | { |
456 | int i, size, retval; | |
4cf1653a | 457 | struct priv *priv = netdev_priv(dev); |
1da177e4 LT |
458 | |
459 | dev->base_addr = ioaddr; | |
460 | dev->irq = irq; | |
461 | dev->mem_start = memstart; | |
462 | dev->mem_end = memend; | |
463 | ||
7f8cfd56 AV |
464 | spin_lock_init(&priv->spinlock); |
465 | ||
1da177e4 LT |
466 | if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME)) |
467 | return -EBUSY; | |
468 | ||
a197f693 | 469 | if (!(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) || |
1da177e4 LT |
470 | !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) { |
471 | retval = -ENODEV; | |
472 | goto out; | |
473 | } | |
474 | ||
a197f693 | 475 | for (i = 0; i < ETH_ALEN; i++) |
1da177e4 LT |
476 | dev->dev_addr[i] = inb(dev->base_addr+i); |
477 | ||
8e95a202 JP |
478 | if (dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1 || |
479 | dev->dev_addr[2] != NI52_ADDR2) { | |
1da177e4 LT |
480 | retval = -ENODEV; |
481 | goto out; | |
482 | } | |
483 | ||
a197f693 AC |
484 | printk(KERN_INFO "%s: NI5210 found at %#3lx, ", |
485 | dev->name, dev->base_addr); | |
1da177e4 LT |
486 | |
487 | /* | |
488 | * check (or search) IO-Memory, 8K and 16K | |
489 | */ | |
490 | #ifdef MODULE | |
491 | size = dev->mem_end - dev->mem_start; | |
a197f693 AC |
492 | if (size != 0x2000 && size != 0x4000) { |
493 | printk("\n"); | |
494 | printk(KERN_ERR "%s: Invalid memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n", dev->name, size); | |
1da177e4 LT |
495 | retval = -ENODEV; |
496 | goto out; | |
497 | } | |
de597146 | 498 | if (!check586(dev, size)) { |
a197f693 | 499 | printk(KERN_ERR "?memcheck, Can't find memory at 0x%lx with size %d!\n", dev->mem_start, size); |
1da177e4 LT |
500 | retval = -ENODEV; |
501 | goto out; | |
502 | } | |
503 | #else | |
a197f693 AC |
504 | if (dev->mem_start != 0) { |
505 | /* no auto-mem-probe */ | |
1da177e4 | 506 | size = 0x4000; /* check for 16K mem */ |
de597146 | 507 | if (!check586(dev, size)) { |
1da177e4 | 508 | size = 0x2000; /* check for 8K mem */ |
de597146 | 509 | if (!check586(dev, size)) { |
a197f693 | 510 | printk(KERN_ERR "?memprobe, Can't find memory at 0x%lx!\n", dev->mem_start); |
1da177e4 LT |
511 | retval = -ENODEV; |
512 | goto out; | |
513 | } | |
514 | } | |
a197f693 AC |
515 | } else { |
516 | static const unsigned long memaddrs[] = { | |
517 | 0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000, | |
518 | 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0 | |
519 | }; | |
520 | for (i = 0;; i++) { | |
521 | if (!memaddrs[i]) { | |
522 | printk(KERN_ERR "?memprobe, Can't find io-memory!\n"); | |
1da177e4 LT |
523 | retval = -ENODEV; |
524 | goto out; | |
525 | } | |
526 | dev->mem_start = memaddrs[i]; | |
527 | size = 0x2000; /* check for 8K mem */ | |
de597146 | 528 | if (check586(dev, size)) |
a197f693 | 529 | /* 8K-check */ |
1da177e4 LT |
530 | break; |
531 | size = 0x4000; /* check for 16K mem */ | |
de597146 | 532 | if (check586(dev, size)) |
a197f693 | 533 | /* 16K-check */ |
1da177e4 LT |
534 | break; |
535 | } | |
536 | } | |
a197f693 AC |
537 | /* set mem_end showed by 'ifconfig' */ |
538 | dev->mem_end = dev->mem_start + size; | |
1da177e4 LT |
539 | #endif |
540 | ||
1da177e4 LT |
541 | alloc586(dev); |
542 | ||
543 | /* set number of receive-buffs according to memsize */ | |
a197f693 | 544 | if (size == 0x2000) |
e06ee2bb | 545 | priv->num_recv_buffs = NUM_RECV_BUFFS_8; |
1da177e4 | 546 | else |
e06ee2bb | 547 | priv->num_recv_buffs = NUM_RECV_BUFFS_16; |
1da177e4 | 548 | |
a197f693 AC |
549 | printk(KERN_DEBUG "Memaddr: 0x%lx, Memsize: %d, ", |
550 | dev->mem_start, size); | |
1da177e4 | 551 | |
a197f693 | 552 | if (dev->irq < 2) { |
1da177e4 LT |
553 | unsigned long irq_mask; |
554 | ||
555 | irq_mask = probe_irq_on(); | |
556 | ni_reset586(); | |
557 | ni_attn586(); | |
558 | ||
559 | mdelay(20); | |
560 | dev->irq = probe_irq_off(irq_mask); | |
a197f693 | 561 | if (!dev->irq) { |
1da177e4 LT |
562 | printk("?autoirq, Failed to detect IRQ line!\n"); |
563 | retval = -EAGAIN; | |
176f65f3 | 564 | iounmap(priv->mapped); |
1da177e4 LT |
565 | goto out; |
566 | } | |
a197f693 AC |
567 | printk("IRQ %d (autodetected).\n", dev->irq); |
568 | } else { | |
569 | if (dev->irq == 2) | |
1da177e4 | 570 | dev->irq = 9; |
a197f693 | 571 | printk("IRQ %d (assigned and not checked!).\n", dev->irq); |
1da177e4 LT |
572 | } |
573 | ||
2c7669e3 | 574 | dev->netdev_ops = &ni52_netdev_ops; |
1da177e4 | 575 | dev->watchdog_timeo = HZ/20; |
1da177e4 LT |
576 | |
577 | return 0; | |
578 | out: | |
579 | release_region(ioaddr, NI52_TOTAL_SIZE); | |
580 | return retval; | |
581 | } | |
582 | ||
583 | /********************************************** | |
584 | * init the chip (ni52-interrupt should be disabled?!) | |
585 | * needs a correct 'allocated' memory | |
586 | */ | |
587 | ||
588 | static int init586(struct net_device *dev) | |
589 | { | |
2d76c267 | 590 | void __iomem *ptr; |
a197f693 | 591 | int i, result = 0; |
4cf1653a | 592 | struct priv *p = netdev_priv(dev); |
2d76c267 AV |
593 | struct configure_cmd_struct __iomem *cfg_cmd; |
594 | struct iasetup_cmd_struct __iomem *ias_cmd; | |
595 | struct tdr_cmd_struct __iomem *tdr_cmd; | |
596 | struct mcsetup_cmd_struct __iomem *mc_cmd; | |
22bedad3 | 597 | struct netdev_hw_addr *ha; |
4cd24eaf | 598 | int num_addrs = netdev_mc_count(dev); |
1da177e4 | 599 | |
2d76c267 | 600 | ptr = p->scb + 1; |
1da177e4 | 601 | |
2d76c267 | 602 | cfg_cmd = ptr; /* configure-command */ |
a197f693 AC |
603 | writew(0, &cfg_cmd->cmd_status); |
604 | writew(CMD_CONFIGURE | CMD_LAST, &cfg_cmd->cmd_cmd); | |
605 | writew(0xFFFF, &cfg_cmd->cmd_link); | |
606 | ||
607 | /* number of cfg bytes */ | |
608 | writeb(0x0a, &cfg_cmd->byte_cnt); | |
609 | /* fifo-limit (8=tx:32/rx:64) */ | |
610 | writeb(fifo, &cfg_cmd->fifo); | |
611 | /* hold or discard bad recv frames (bit 7) */ | |
612 | writeb(0x40, &cfg_cmd->sav_bf); | |
613 | /* addr_len |!src_insert |pre-len |loopback */ | |
614 | writeb(0x2e, &cfg_cmd->adr_len); | |
615 | writeb(0x00, &cfg_cmd->priority); | |
a419aef8 | 616 | writeb(0x60, &cfg_cmd->ifs); |
a197f693 AC |
617 | writeb(0x00, &cfg_cmd->time_low); |
618 | writeb(0xf2, &cfg_cmd->time_high); | |
a419aef8 | 619 | writeb(0x00, &cfg_cmd->promisc); |
a197f693 | 620 | if (dev->flags & IFF_ALLMULTI) { |
2d76c267 | 621 | int len = ((char __iomem *)p->iscp - (char __iomem *)ptr - 8) / 6; |
a197f693 AC |
622 | if (num_addrs > len) { |
623 | printk(KERN_ERR "%s: switching to promisc. mode\n", | |
624 | dev->name); | |
c16d1185 | 625 | writeb(0x01, &cfg_cmd->promisc); |
1da177e4 LT |
626 | } |
627 | } | |
a197f693 AC |
628 | if (dev->flags & IFF_PROMISC) |
629 | writeb(0x01, &cfg_cmd->promisc); | |
630 | writeb(0x00, &cfg_cmd->carr_coll); | |
631 | writew(make16(cfg_cmd), &p->scb->cbl_offset); | |
05bd831f | 632 | writeb(0, &p->scb->cmd_ruc); |
1da177e4 | 633 | |
a197f693 | 634 | writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ |
1da177e4 LT |
635 | ni_attn586(); |
636 | ||
a197f693 | 637 | wait_for_stat_compl(cfg_cmd); |
1da177e4 | 638 | |
a197f693 AC |
639 | if ((readw(&cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != |
640 | (STAT_COMPL|STAT_OK)) { | |
641 | printk(KERN_ERR "%s: configure command failed: %x\n", | |
642 | dev->name, readw(&cfg_cmd->cmd_status)); | |
1da177e4 LT |
643 | return 1; |
644 | } | |
645 | ||
646 | /* | |
647 | * individual address setup | |
648 | */ | |
649 | ||
2d76c267 | 650 | ias_cmd = ptr; |
1da177e4 | 651 | |
a197f693 AC |
652 | writew(0, &ias_cmd->cmd_status); |
653 | writew(CMD_IASETUP | CMD_LAST, &ias_cmd->cmd_cmd); | |
654 | writew(0xffff, &ias_cmd->cmd_link); | |
1da177e4 | 655 | |
2d76c267 | 656 | memcpy_toio(&ias_cmd->iaddr, (char *)dev->dev_addr, ETH_ALEN); |
1da177e4 | 657 | |
a197f693 | 658 | writew(make16(ias_cmd), &p->scb->cbl_offset); |
1da177e4 | 659 | |
a197f693 | 660 | writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ |
1da177e4 LT |
661 | ni_attn586(); |
662 | ||
a197f693 | 663 | wait_for_stat_compl(ias_cmd); |
1da177e4 | 664 | |
a197f693 AC |
665 | if ((readw(&ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != |
666 | (STAT_OK|STAT_COMPL)) { | |
667 | printk(KERN_ERR "%s (ni52): individual address setup command failed: %04x\n", dev->name, readw(&ias_cmd->cmd_status)); | |
1da177e4 LT |
668 | return 1; |
669 | } | |
670 | ||
671 | /* | |
672 | * TDR, wire check .. e.g. no resistor e.t.c | |
673 | */ | |
6aa20a22 | 674 | |
2d76c267 | 675 | tdr_cmd = ptr; |
1da177e4 | 676 | |
a197f693 AC |
677 | writew(0, &tdr_cmd->cmd_status); |
678 | writew(CMD_TDR | CMD_LAST, &tdr_cmd->cmd_cmd); | |
679 | writew(0xffff, &tdr_cmd->cmd_link); | |
680 | writew(0, &tdr_cmd->status); | |
1da177e4 | 681 | |
a197f693 AC |
682 | writew(make16(tdr_cmd), &p->scb->cbl_offset); |
683 | writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ | |
1da177e4 LT |
684 | ni_attn586(); |
685 | ||
a197f693 | 686 | wait_for_stat_compl(tdr_cmd); |
1da177e4 | 687 | |
a197f693 AC |
688 | if (!(readw(&tdr_cmd->cmd_status) & STAT_COMPL)) |
689 | printk(KERN_ERR "%s: Problems while running the TDR.\n", | |
690 | dev->name); | |
691 | else { | |
692 | udelay(16); | |
693 | result = readw(&tdr_cmd->status); | |
694 | writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc); | |
1da177e4 LT |
695 | ni_attn586(); /* ack the interrupts */ |
696 | ||
a197f693 | 697 | if (result & TDR_LNK_OK) |
1da177e4 | 698 | ; |
a197f693 AC |
699 | else if (result & TDR_XCVR_PRB) |
700 | printk(KERN_ERR "%s: TDR: Transceiver problem. Check the cable(s)!\n", | |
701 | dev->name); | |
702 | else if (result & TDR_ET_OPN) | |
703 | printk(KERN_ERR "%s: TDR: No correct termination %d clocks away.\n", | |
704 | dev->name, result & TDR_TIMEMASK); | |
705 | else if (result & TDR_ET_SRT) { | |
706 | /* time == 0 -> strange :-) */ | |
707 | if (result & TDR_TIMEMASK) | |
708 | printk(KERN_ERR "%s: TDR: Detected a short circuit %d clocks away.\n", | |
709 | dev->name, result & TDR_TIMEMASK); | |
710 | } else | |
711 | printk(KERN_ERR "%s: TDR: Unknown status %04x\n", | |
712 | dev->name, result); | |
1da177e4 LT |
713 | } |
714 | ||
715 | /* | |
716 | * Multicast setup | |
717 | */ | |
a197f693 | 718 | if (num_addrs && !(dev->flags & IFF_PROMISC)) { |
2d76c267 | 719 | mc_cmd = ptr; |
a197f693 AC |
720 | writew(0, &mc_cmd->cmd_status); |
721 | writew(CMD_MCSETUP | CMD_LAST, &mc_cmd->cmd_cmd); | |
722 | writew(0xffff, &mc_cmd->cmd_link); | |
723 | writew(num_addrs * 6, &mc_cmd->mc_cnt); | |
1da177e4 | 724 | |
f9dcbcc9 | 725 | i = 0; |
22bedad3 JP |
726 | netdev_for_each_mc_addr(ha, dev) |
727 | memcpy_toio(mc_cmd->mc_list[i++], ha->addr, 6); | |
1da177e4 | 728 | |
a197f693 AC |
729 | writew(make16(mc_cmd), &p->scb->cbl_offset); |
730 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 LT |
731 | ni_attn586(); |
732 | ||
a197f693 | 733 | wait_for_stat_compl(mc_cmd); |
1da177e4 | 734 | |
a197f693 AC |
735 | if ((readw(&mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) |
736 | != (STAT_COMPL|STAT_OK)) | |
737 | printk(KERN_ERR "%s: Can't apply multicast-address-list.\n", dev->name); | |
1da177e4 LT |
738 | } |
739 | ||
740 | /* | |
741 | * alloc nop/xmit-cmds | |
742 | */ | |
743 | #if (NUM_XMIT_BUFFS == 1) | |
a197f693 | 744 | for (i = 0; i < 2; i++) { |
2d76c267 | 745 | p->nop_cmds[i] = ptr; |
a197f693 AC |
746 | writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd); |
747 | writew(0, &p->nop_cmds[i]->cmd_status); | |
748 | writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link); | |
2d76c267 | 749 | ptr = ptr + sizeof(struct nop_cmd_struct); |
1da177e4 LT |
750 | } |
751 | #else | |
a197f693 | 752 | for (i = 0; i < NUM_XMIT_BUFFS; i++) { |
2d76c267 | 753 | p->nop_cmds[i] = ptr; |
a197f693 AC |
754 | writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd); |
755 | writew(0, &p->nop_cmds[i]->cmd_status); | |
756 | writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link); | |
2d76c267 | 757 | ptr = ptr + sizeof(struct nop_cmd_struct); |
1da177e4 LT |
758 | } |
759 | #endif | |
760 | ||
2d76c267 | 761 | ptr = alloc_rfa(dev, ptr); /* init receive-frame-area */ |
1da177e4 LT |
762 | |
763 | /* | |
764 | * alloc xmit-buffs / init xmit_cmds | |
765 | */ | |
a197f693 AC |
766 | for (i = 0; i < NUM_XMIT_BUFFS; i++) { |
767 | /* Transmit cmd/buff 0 */ | |
2d76c267 AV |
768 | p->xmit_cmds[i] = ptr; |
769 | ptr = ptr + sizeof(struct transmit_cmd_struct); | |
770 | p->xmit_cbuffs[i] = ptr; /* char-buffs */ | |
771 | ptr = ptr + XMIT_BUFF_SIZE; | |
772 | p->xmit_buffs[i] = ptr; /* TBD */ | |
773 | ptr = ptr + sizeof(struct tbd_struct); | |
774 | if ((void __iomem *)ptr > (void __iomem *)p->iscp) { | |
a197f693 AC |
775 | printk(KERN_ERR "%s: not enough shared-mem for your configuration!\n", |
776 | dev->name); | |
1da177e4 LT |
777 | return 1; |
778 | } | |
2d76c267 | 779 | memset_io(p->xmit_cmds[i], 0, |
a197f693 | 780 | sizeof(struct transmit_cmd_struct)); |
2d76c267 | 781 | memset_io(p->xmit_buffs[i], 0, |
a197f693 AC |
782 | sizeof(struct tbd_struct)); |
783 | writew(make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]), | |
784 | &p->xmit_cmds[i]->cmd_link); | |
785 | writew(STAT_COMPL, &p->xmit_cmds[i]->cmd_status); | |
786 | writew(CMD_XMIT|CMD_INT, &p->xmit_cmds[i]->cmd_cmd); | |
787 | writew(make16(p->xmit_buffs[i]), &p->xmit_cmds[i]->tbd_offset); | |
788 | writew(0xffff, &p->xmit_buffs[i]->next); | |
789 | writel(make24(p->xmit_cbuffs[i]), &p->xmit_buffs[i]->buffer); | |
1da177e4 LT |
790 | } |
791 | ||
792 | p->xmit_count = 0; | |
793 | p->xmit_last = 0; | |
794 | #ifndef NO_NOPCOMMANDS | |
795 | p->nop_point = 0; | |
796 | #endif | |
797 | ||
798 | /* | |
799 | * 'start transmitter' | |
800 | */ | |
801 | #ifndef NO_NOPCOMMANDS | |
a197f693 AC |
802 | writew(make16(p->nop_cmds[0]), &p->scb->cbl_offset); |
803 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 | 804 | ni_attn586(); |
a197f693 | 805 | wait_for_scb_cmd(dev); |
1da177e4 | 806 | #else |
a197f693 AC |
807 | writew(make16(p->xmit_cmds[0]), &p->xmit_cmds[0]->cmd_link); |
808 | writew(CMD_XMIT | CMD_SUSPEND | CMD_INT, &p->xmit_cmds[0]->cmd_cmd); | |
1da177e4 LT |
809 | #endif |
810 | ||
811 | /* | |
812 | * ack. interrupts | |
813 | */ | |
a197f693 | 814 | writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc); |
1da177e4 | 815 | ni_attn586(); |
a197f693 | 816 | udelay(16); |
1da177e4 LT |
817 | |
818 | ni_enaint(); | |
819 | ||
820 | return 0; | |
821 | } | |
822 | ||
823 | /****************************************************** | |
824 | * This is a helper routine for ni52_rnr_int() and init586(). | |
825 | * It sets up the Receive Frame Area (RFA). | |
826 | */ | |
827 | ||
2d76c267 | 828 | static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr) |
1da177e4 | 829 | { |
2d76c267 AV |
830 | struct rfd_struct __iomem *rfd = ptr; |
831 | struct rbd_struct __iomem *rbd; | |
1da177e4 | 832 | int i; |
4cf1653a | 833 | struct priv *p = netdev_priv(dev); |
1da177e4 | 834 | |
2d76c267 | 835 | memset_io(rfd, 0, |
a197f693 | 836 | sizeof(struct rfd_struct) * (p->num_recv_buffs + rfdadd)); |
1da177e4 LT |
837 | p->rfd_first = rfd; |
838 | ||
a197f693 AC |
839 | for (i = 0; i < (p->num_recv_buffs + rfdadd); i++) { |
840 | writew(make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd)), | |
841 | &rfd[i].next); | |
842 | writew(0xffff, &rfd[i].rbd_offset); | |
1da177e4 | 843 | } |
a197f693 AC |
844 | /* RU suspend */ |
845 | writeb(RFD_SUSP, &rfd[p->num_recv_buffs-1+rfdadd].last); | |
1da177e4 | 846 | |
2d76c267 | 847 | ptr = rfd + (p->num_recv_buffs + rfdadd); |
1da177e4 | 848 | |
2d76c267 AV |
849 | rbd = ptr; |
850 | ptr = rbd + p->num_recv_buffs; | |
1da177e4 LT |
851 | |
852 | /* clr descriptors */ | |
2d76c267 | 853 | memset_io(rbd, 0, sizeof(struct rbd_struct) * (p->num_recv_buffs)); |
1da177e4 | 854 | |
a197f693 AC |
855 | for (i = 0; i < p->num_recv_buffs; i++) { |
856 | writew(make16(rbd + (i+1) % p->num_recv_buffs), &rbd[i].next); | |
857 | writew(RECV_BUFF_SIZE, &rbd[i].size); | |
858 | writel(make24(ptr), &rbd[i].buffer); | |
2d76c267 | 859 | ptr = ptr + RECV_BUFF_SIZE; |
1da177e4 | 860 | } |
1da177e4 LT |
861 | p->rfd_top = p->rfd_first; |
862 | p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd); | |
863 | ||
a197f693 AC |
864 | writew(make16(p->rfd_first), &p->scb->rfa_offset); |
865 | writew(make16(rbd), &p->rfd_first->rbd_offset); | |
1da177e4 LT |
866 | |
867 | return ptr; | |
868 | } | |
869 | ||
870 | ||
871 | /************************************************** | |
872 | * Interrupt Handler ... | |
873 | */ | |
874 | ||
a197f693 | 875 | static irqreturn_t ni52_interrupt(int irq, void *dev_id) |
1da177e4 LT |
876 | { |
877 | struct net_device *dev = dev_id; | |
a197f693 AC |
878 | unsigned int stat; |
879 | int cnt = 0; | |
1da177e4 LT |
880 | struct priv *p; |
881 | ||
4cf1653a | 882 | p = netdev_priv(dev); |
1da177e4 | 883 | |
a197f693 | 884 | if (debuglevel > 1) |
1da177e4 LT |
885 | printk("I"); |
886 | ||
a197f693 | 887 | spin_lock(&p->spinlock); |
1da177e4 | 888 | |
a197f693 AC |
889 | wait_for_scb_cmd(dev); /* wait for last command */ |
890 | ||
891 | while ((stat = readb(&p->scb->cus) & STAT_MASK)) { | |
892 | writeb(stat, &p->scb->cmd_cuc); | |
1da177e4 LT |
893 | ni_attn586(); |
894 | ||
a197f693 | 895 | if (stat & STAT_FR) /* received a frame */ |
1da177e4 LT |
896 | ni52_rcv_int(dev); |
897 | ||
a197f693 | 898 | if (stat & STAT_RNR) { /* RU went 'not ready' */ |
1da177e4 | 899 | printk("(R)"); |
a197f693 AC |
900 | if (readb(&p->scb->rus) & RU_SUSPEND) { |
901 | /* special case: RU_SUSPEND */ | |
902 | wait_for_scb_cmd(dev); | |
05bd831f | 903 | writeb(RUC_RESUME, &p->scb->cmd_ruc); |
1da177e4 | 904 | ni_attn586(); |
a197f693 AC |
905 | wait_for_scb_cmd_ruc(dev); |
906 | } else { | |
907 | printk(KERN_ERR "%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n", | |
908 | dev->name, stat, readb(&p->scb->rus)); | |
1da177e4 LT |
909 | ni52_rnr_int(dev); |
910 | } | |
911 | } | |
912 | ||
a197f693 AC |
913 | /* Command with I-bit set complete */ |
914 | if (stat & STAT_CX) | |
1da177e4 LT |
915 | ni52_xmt_int(dev); |
916 | ||
917 | #ifndef NO_NOPCOMMANDS | |
a197f693 AC |
918 | if (stat & STAT_CNA) { /* CU went 'not ready' */ |
919 | if (netif_running(dev)) | |
920 | printk(KERN_ERR "%s: oops! CU has left active state. stat: %04x/%02x.\n", | |
921 | dev->name, stat, readb(&p->scb->cus)); | |
1da177e4 LT |
922 | } |
923 | #endif | |
924 | ||
a197f693 AC |
925 | if (debuglevel > 1) |
926 | printk("%d", cnt++); | |
1da177e4 | 927 | |
a197f693 AC |
928 | /* Wait for ack. (ni52_xmt_int can be faster than ack!!) */ |
929 | wait_for_scb_cmd(dev); | |
05bd831f | 930 | if (readb(&p->scb->cmd_cuc)) { /* timed out? */ |
a197f693 AC |
931 | printk(KERN_ERR "%s: Acknowledge timed out.\n", |
932 | dev->name); | |
1da177e4 LT |
933 | ni_disint(); |
934 | break; | |
935 | } | |
936 | } | |
a197f693 | 937 | spin_unlock(&p->spinlock); |
1da177e4 | 938 | |
a197f693 | 939 | if (debuglevel > 1) |
1da177e4 LT |
940 | printk("i"); |
941 | return IRQ_HANDLED; | |
942 | } | |
943 | ||
944 | /******************************************************* | |
945 | * receive-interrupt | |
946 | */ | |
947 | ||
948 | static void ni52_rcv_int(struct net_device *dev) | |
949 | { | |
a197f693 | 950 | int status, cnt = 0; |
1da177e4 LT |
951 | unsigned short totlen; |
952 | struct sk_buff *skb; | |
2d76c267 | 953 | struct rbd_struct __iomem *rbd; |
4cf1653a | 954 | struct priv *p = netdev_priv(dev); |
1da177e4 | 955 | |
a197f693 | 956 | if (debuglevel > 0) |
1da177e4 LT |
957 | printk("R"); |
958 | ||
a197f693 | 959 | for (; (status = readb(&p->rfd_top->stat_high)) & RFD_COMPL;) { |
05bd831f | 960 | rbd = make32(readw(&p->rfd_top->rbd_offset)); |
a197f693 AC |
961 | if (status & RFD_OK) { /* frame received without error? */ |
962 | totlen = readw(&rbd->status); | |
963 | if (totlen & RBD_LAST) { | |
964 | /* the first and the last buffer? */ | |
965 | totlen &= RBD_MASK; /* length of this frame */ | |
966 | writew(0x00, &rbd->status); | |
967 | skb = (struct sk_buff *)dev_alloc_skb(totlen+2); | |
968 | if (skb != NULL) { | |
969 | skb_reserve(skb, 2); | |
970 | skb_put(skb, totlen); | |
05bd831f | 971 | memcpy_fromio(skb->data, p->base + readl(&rbd->buffer), totlen); |
a197f693 AC |
972 | skb->protocol = eth_type_trans(skb, dev); |
973 | netif_rx(skb); | |
4265e669 KV |
974 | dev->stats.rx_packets++; |
975 | dev->stats.rx_bytes += totlen; | |
a197f693 | 976 | } else |
4265e669 | 977 | dev->stats.rx_dropped++; |
a197f693 AC |
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); | |
4265e669 | 995 | dev->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); | |
4265e669 | 1000 | dev->stats.rx_errors++; |
1da177e4 | 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 | { | |
4cf1653a | 1043 | struct priv *p = netdev_priv(dev); |
1da177e4 | 1044 | |
4265e669 | 1045 | dev->stats.rx_errors++; |
1da177e4 | 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; | |
4cf1653a | 1068 | struct priv *p = netdev_priv(dev); |
1da177e4 | 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) { |
4265e669 KV |
1078 | dev->stats.tx_packets++; |
1079 | dev->stats.collisions += (status & TCMD_MAXCOLLMASK); | |
a197f693 | 1080 | } else { |
4265e669 | 1081 | dev->stats.tx_errors++; |
a197f693 AC |
1082 | if (status & TCMD_LATECOLL) { |
1083 | printk(KERN_ERR "%s: late collision detected.\n", | |
1084 | dev->name); | |
4265e669 | 1085 | dev->stats.collisions++; |
a197f693 | 1086 | } else if (status & TCMD_NOCARRIER) { |
4265e669 | 1087 | dev->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) { | |
4265e669 | 1094 | dev->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); | |
4265e669 | 1100 | dev->stats.collisions += 16; |
1da177e4 LT |
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 | { | |
4cf1653a | 1116 | struct priv *p = netdev_priv(dev); |
1da177e4 | 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 | { | |
4cf1653a | 1129 | struct priv *p = netdev_priv(dev); |
1da177e4 | 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); |
1ae5dc34 | 1149 | dev->trans_start = jiffies; /* prevent tx timeout */ |
1da177e4 LT |
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 | } | |
1ae5dc34 | 1167 | dev->trans_start = jiffies; /* prevent tx timeout */ |
1da177e4 LT |
1168 | } |
1169 | ||
1170 | /****************************************************** | |
1171 | * send frame | |
1172 | */ | |
1173 | ||
61357325 SH |
1174 | static netdev_tx_t ni52_send_packet(struct sk_buff *skb, |
1175 | struct net_device *dev) | |
1da177e4 | 1176 | { |
a197f693 | 1177 | int len, i; |
1da177e4 LT |
1178 | #ifndef NO_NOPCOMMANDS |
1179 | int next_nop; | |
1180 | #endif | |
4cf1653a | 1181 | struct priv *p = netdev_priv(dev); |
1da177e4 | 1182 | |
a197f693 AC |
1183 | if (skb->len > XMIT_BUFF_SIZE) { |
1184 | 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); | |
ec634fe3 | 1185 | return NETDEV_TX_OK; |
1da177e4 LT |
1186 | } |
1187 | ||
1188 | netif_stop_queue(dev); | |
1189 | ||
05bd831f | 1190 | memcpy_toio(p->xmit_cbuffs[p->xmit_count], skb->data, skb->len); |
a197f693 AC |
1191 | len = skb->len; |
1192 | if (len < ETH_ZLEN) { | |
1193 | len = ETH_ZLEN; | |
05bd831f | 1194 | memset_io(p->xmit_cbuffs[p->xmit_count]+skb->len, 0, |
a197f693 | 1195 | len - skb->len); |
1da177e4 | 1196 | } |
1da177e4 LT |
1197 | |
1198 | #if (NUM_XMIT_BUFFS == 1) | |
1199 | # ifdef NO_NOPCOMMANDS | |
1200 | ||
1201 | #ifdef DEBUG | |
05bd831f | 1202 | if (readb(&p->scb->cus) & CU_ACTIVE) { |
a197f693 AC |
1203 | printk(KERN_ERR "%s: Hmmm .. CU is still running and we wanna send a new packet.\n", dev->name); |
1204 | printk(KERN_ERR "%s: stat: %04x %04x\n", | |
1205 | dev->name, readb(&p->scb->cus), | |
1206 | readw(&p->xmit_cmds[0]->cmd_status)); | |
1207 | } | |
1da177e4 | 1208 | #endif |
05bd831f | 1209 | writew(TBD_LAST | len, &p->xmit_buffs[0]->size); |
a197f693 AC |
1210 | for (i = 0; i < 16; i++) { |
1211 | writew(0, &p->xmit_cmds[0]->cmd_status); | |
1212 | wait_for_scb_cmd(dev); | |
1213 | if ((readb(&p->scb->cus) & CU_STATUS) == CU_SUSPEND) | |
1214 | writeb(CUC_RESUME, &p->scb->cmd_cuc); | |
1215 | else { | |
1216 | writew(make16(p->xmit_cmds[0]), &p->scb->cbl_offset); | |
1217 | writeb(CUC_START, &p->scb->cmd_cuc); | |
1da177e4 | 1218 | } |
a197f693 | 1219 | ni_attn586(); |
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); | |
a197f693 AC |
1241 | p->nop_point = next_nop; |
1242 | dev_kfree_skb(skb); | |
1da177e4 LT |
1243 | # endif |
1244 | #else | |
a197f693 AC |
1245 | writew(TBD_LAST | len, &p->xmit_buffs[p->xmit_count]->size); |
1246 | next_nop = p->xmit_count + 1 | |
1247 | if (next_nop == NUM_XMIT_BUFFS) | |
1248 | next_nop = 0; | |
1249 | writew(0, &p->xmit_cmds[p->xmit_count]->cmd_status); | |
1250 | /* linkpointer of xmit-command already points to next nop cmd */ | |
1251 | writew(make16(p->nop_cmds[next_nop]), | |
1252 | &p->nop_cmds[next_nop]->cmd_link); | |
1253 | writew(0, &p->nop_cmds[next_nop]->cmd_status); | |
1254 | writew(make16(p->xmit_cmds[p->xmit_count]), | |
1255 | &p->nop_cmds[p->xmit_count]->cmd_link); | |
a197f693 AC |
1256 | p->xmit_count = next_nop; |
1257 | { | |
1258 | unsigned long flags; | |
1259 | spin_lock_irqsave(&p->spinlock); | |
1260 | if (p->xmit_count != p->xmit_last) | |
1261 | netif_wake_queue(dev); | |
1262 | spin_unlock_irqrestore(&p->spinlock); | |
1da177e4 | 1263 | } |
a197f693 AC |
1264 | dev_kfree_skb(skb); |
1265 | #endif | |
ec634fe3 | 1266 | return NETDEV_TX_OK; |
1da177e4 LT |
1267 | } |
1268 | ||
1269 | /******************************************* | |
1270 | * Someone wanna have the statistics | |
1271 | */ | |
1272 | ||
1273 | static struct net_device_stats *ni52_get_stats(struct net_device *dev) | |
1274 | { | |
4cf1653a | 1275 | struct priv *p = netdev_priv(dev); |
a197f693 AC |
1276 | unsigned short crc, aln, rsc, ovrn; |
1277 | ||
1278 | /* Get error-statistics from the ni82586 */ | |
1279 | crc = readw(&p->scb->crc_errs); | |
1280 | writew(0, &p->scb->crc_errs); | |
1281 | aln = readw(&p->scb->aln_errs); | |
1282 | writew(0, &p->scb->aln_errs); | |
1283 | rsc = readw(&p->scb->rsc_errs); | |
1284 | writew(0, &p->scb->rsc_errs); | |
1285 | ovrn = readw(&p->scb->ovrn_errs); | |
1286 | writew(0, &p->scb->ovrn_errs); | |
1da177e4 | 1287 | |
4265e669 KV |
1288 | dev->stats.rx_crc_errors += crc; |
1289 | dev->stats.rx_fifo_errors += ovrn; | |
1290 | dev->stats.rx_frame_errors += aln; | |
1291 | dev->stats.rx_dropped += rsc; | |
1da177e4 | 1292 | |
4265e669 | 1293 | return &dev->stats; |
1da177e4 LT |
1294 | } |
1295 | ||
1296 | /******************************************************** | |
1297 | * Set MC list .. | |
1298 | */ | |
1299 | ||
1300 | static void set_multicast_list(struct net_device *dev) | |
1301 | { | |
1302 | netif_stop_queue(dev); | |
1303 | ni_disint(); | |
1304 | alloc586(dev); | |
1305 | init586(dev); | |
1306 | startrecv586(dev); | |
1307 | ni_enaint(); | |
1308 | netif_wake_queue(dev); | |
1309 | } | |
1310 | ||
1311 | #ifdef MODULE | |
1312 | static struct net_device *dev_ni52; | |
1313 | ||
1314 | module_param(io, int, 0); | |
1315 | module_param(irq, int, 0); | |
1316 | module_param(memstart, long, 0); | |
1317 | module_param(memend, long, 0); | |
1318 | MODULE_PARM_DESC(io, "NI5210 I/O base address,required"); | |
1319 | MODULE_PARM_DESC(irq, "NI5210 IRQ number,required"); | |
1320 | MODULE_PARM_DESC(memstart, "NI5210 memory base address,required"); | |
1321 | MODULE_PARM_DESC(memend, "NI5210 memory end address,required"); | |
1322 | ||
19a8664d | 1323 | int __init init_module(void) |
1da177e4 | 1324 | { |
a197f693 AC |
1325 | if (io <= 0x0 || !memend || !memstart || irq < 2) { |
1326 | printk(KERN_ERR "ni52: Autoprobing not allowed for modules.\n"); | |
1327 | printk(KERN_ERR "ni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n"); | |
1da177e4 LT |
1328 | return -ENODEV; |
1329 | } | |
1330 | dev_ni52 = ni52_probe(-1); | |
1331 | if (IS_ERR(dev_ni52)) | |
1332 | return PTR_ERR(dev_ni52); | |
1333 | return 0; | |
1334 | } | |
1335 | ||
afc8eb46 | 1336 | void __exit cleanup_module(void) |
1da177e4 | 1337 | { |
4cf1653a | 1338 | struct priv *p = netdev_priv(dev_ni52); |
1da177e4 | 1339 | unregister_netdev(dev_ni52); |
176f65f3 | 1340 | iounmap(p->mapped); |
1da177e4 LT |
1341 | release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE); |
1342 | free_netdev(dev_ni52); | |
1343 | } | |
1344 | #endif /* MODULE */ | |
1345 | ||
1da177e4 | 1346 | MODULE_LICENSE("GPL"); |