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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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!)
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 * 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
Alan Coxa197f692008-02-08 15:27:38 +000034 * (before getting an i82596 (yes 596 not 586) manual, the existing drivers
35 * helped me a lot to understand this tricky chip.)
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 *
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.
Alan Coxa197f692008-02-08 15:27:38 +000040 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 *
44 * IMPORTANT NOTE:
45 * On fast networks, it's a (very) good idea to have 16K shared memory. With
Alan Coxa197f692008-02-08 15:27:38 +000046 * 8K, we can store only 4 receive frames, so it can (easily) happen that a
47 * remote machine 'overruns' our system.
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 *
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)
Alan Coxa197f692008-02-08 15:27:38 +000061 * sending in NOP-mode: peak performance up to 530K/s (but better don't
62 * run this mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 */
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 *
Alan Coxa197f692008-02-08 15:27:38 +000096 * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff,
97 * too (MH)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 *
99 * < 30.Sep.93: first versions
100 */
101
102static int debuglevel; /* debug-printk 0: off 1: a few 2: more */
103static int automatic_resume; /* experimental .. better should be zero */
104static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */
Alan Coxa197f692008-02-08 15:27:38 +0000105static int fifo = 0x8; /* don't change */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107#include <linux/module.h>
108#include <linux/kernel.h>
109#include <linux/string.h>
110#include <linux/errno.h>
111#include <linux/ioport.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112#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
Alan Coxa197f692008-02-08 15:27:38 +0000129#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); }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
Al Viro05bd8312008-03-19 09:44:39 +0000134#define make32(ptr16) ((void __iomem *)(p->memtop + (short) (ptr16)))
Al Viroe06ee2b2008-03-19 09:43:59 +0000135#define make24(ptr32) ((char __iomem *)(ptr32)) - p->base
136#define make16(ptr32) ((unsigned short) ((char __iomem *)(ptr32)\
137 - p->memtop))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
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
145sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
146sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
147sizeof(rfd) = 24; sizeof(rbd) = 12;
148sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
149sizeof(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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162
163#define NI52_TOTAL_SIZE 16
164#define NI52_ADDR0 0x02
165#define NI52_ADDR1 0x07
166#define NI52_ADDR2 0x01
167
Alan Coxa197f692008-02-08 15:27:38 +0000168static int ni52_probe1(struct net_device *dev, int ioaddr);
169static irqreturn_t ni52_interrupt(int irq, void *dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170static int ni52_open(struct net_device *dev);
171static int ni52_close(struct net_device *dev);
Stephen Hemminger613573252009-08-31 19:50:58 +0000172static netdev_tx_t ni52_send_packet(struct sk_buff *, struct net_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173static struct net_device_stats *ni52_get_stats(struct net_device *dev);
174static void set_multicast_list(struct net_device *dev);
175static void ni52_timeout(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
177/* helper-functions */
178static int init586(struct net_device *dev);
Al Virode597142008-03-19 09:43:49 +0000179static int check586(struct net_device *dev, unsigned size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180static void alloc586(struct net_device *dev);
181static void startrecv586(struct net_device *dev);
Al Viro2d76c262008-03-19 09:43:29 +0000182static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183static void ni52_rcv_int(struct net_device *dev);
184static void ni52_xmt_int(struct net_device *dev);
185static void ni52_rnr_int(struct net_device *dev);
186
Alan Coxa197f692008-02-08 15:27:38 +0000187struct priv {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 struct net_device_stats stats;
Al Viroe06ee2b2008-03-19 09:43:59 +0000189 char __iomem *base;
190 char __iomem *mapped;
Al Viro2d76c262008-03-19 09:43:29 +0000191 char __iomem *memtop;
Alan Coxa197f692008-02-08 15:27:38 +0000192 spinlock_t spinlock;
193 int reset;
Al Viro2d76c262008-03-19 09:43:29 +0000194 struct rfd_struct __iomem *rfd_last, *rfd_top, *rfd_first;
195 struct scp_struct __iomem *scp;
196 struct iscp_struct __iomem *iscp;
197 struct scb_struct __iomem *scb;
198 struct tbd_struct __iomem *xmit_buffs[NUM_XMIT_BUFFS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199#if (NUM_XMIT_BUFFS == 1)
Al Viro2d76c262008-03-19 09:43:29 +0000200 struct transmit_cmd_struct __iomem *xmit_cmds[2];
201 struct nop_cmd_struct __iomem *nop_cmds[2];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202#else
Al Viro2d76c262008-03-19 09:43:29 +0000203 struct transmit_cmd_struct __iomem *xmit_cmds[NUM_XMIT_BUFFS];
204 struct nop_cmd_struct __iomem *nop_cmds[NUM_XMIT_BUFFS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205#endif
Alan Coxa197f692008-02-08 15:27:38 +0000206 int nop_point, num_recv_buffs;
Al Viro2d76c262008-03-19 09:43:29 +0000207 char __iomem *xmit_cbuffs[NUM_XMIT_BUFFS];
Alan Coxa197f692008-02-08 15:27:38 +0000208 int xmit_count, xmit_last;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209};
210
Alan Coxa197f692008-02-08 15:27:38 +0000211/* wait for command with timeout: */
212static void wait_for_scb_cmd(struct net_device *dev)
213{
Wang Chen4cf16532008-11-12 23:38:14 -0800214 struct priv *p = netdev_priv(dev);
Alan Coxa197f692008-02-08 15:27:38 +0000215 int i;
216 for (i = 0; i < 16384; i++) {
217 if (readb(&p->scb->cmd_cuc) == 0)
218 break;
219 udelay(4);
220 if (i == 16383) {
221 printk(KERN_ERR "%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",
222 dev->name, readb(&p->scb->cmd_cuc), readb(&p->scb->cus));
223 if (!p->reset) {
224 p->reset = 1;
225 ni_reset586();
226 }
227 }
228 }
229}
230
231static void wait_for_scb_cmd_ruc(struct net_device *dev)
232{
Wang Chen4cf16532008-11-12 23:38:14 -0800233 struct priv *p = netdev_priv(dev);
Alan Coxa197f692008-02-08 15:27:38 +0000234 int i;
235 for (i = 0; i < 16384; i++) {
236 if (readb(&p->scb->cmd_ruc) == 0)
237 break;
238 udelay(4);
239 if (i == 16383) {
240 printk(KERN_ERR "%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",
Al Viro05bd8312008-03-19 09:44:39 +0000241 dev->name, readb(&p->scb->cmd_ruc),
242 readb(&p->scb->rus));
Alan Coxa197f692008-02-08 15:27:38 +0000243 if (!p->reset) {
244 p->reset = 1;
245 ni_reset586();
246 }
247 }
248 }
249}
250
Al Viro2d76c262008-03-19 09:43:29 +0000251static void wait_for_stat_compl(void __iomem *p)
Alan Coxa197f692008-02-08 15:27:38 +0000252{
Al Viro2d76c262008-03-19 09:43:29 +0000253 struct nop_cmd_struct __iomem *addr = p;
Alan Coxa197f692008-02-08 15:27:38 +0000254 int i;
255 for (i = 0; i < 32767; i++) {
256 if (readw(&((addr)->cmd_status)) & STAT_COMPL)
257 break;
258 udelay(32);
259 }
260}
261
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262/**********************************************
263 * close device
264 */
265static int ni52_close(struct net_device *dev)
266{
267 free_irq(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 ni_reset586(); /* the hard way to stop the receiver */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 netif_stop_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 return 0;
271}
272
273/**********************************************
274 * open device
275 */
276static int ni52_open(struct net_device *dev)
277{
278 int ret;
279
280 ni_disint();
281 alloc586(dev);
282 init586(dev);
283 startrecv586(dev);
284 ni_enaint();
285
Joe Perchesa0607fd2009-11-18 23:29:17 -0800286 ret = request_irq(dev->irq, ni52_interrupt, 0, dev->name, dev);
Alan Coxa197f692008-02-08 15:27:38 +0000287 if (ret) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 ni_reset586();
289 return ret;
290 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 netif_start_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 return 0; /* most done by init */
293}
294
Al Viro76af5692008-03-19 09:44:19 +0000295static int check_iscp(struct net_device *dev, void __iomem *addr)
296{
297 struct iscp_struct __iomem *iscp = addr;
Wang Chen4cf16532008-11-12 23:38:14 -0800298 struct priv *p = netdev_priv(dev);
Al Viro76af5692008-03-19 09:44:19 +0000299 memset_io(iscp, 0, sizeof(struct iscp_struct));
300
301 writel(make24(iscp), &p->scp->iscp);
302 writeb(1, &iscp->busy);
303
304 ni_reset586();
305 ni_attn586();
306 mdelay(32); /* wait a while... */
307 /* i82586 clears 'busy' after successful init */
308 if (readb(&iscp->busy))
309 return 0;
310 return 1;
311}
312
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313/**********************************************
314 * Check to see if there's an 82586 out there.
315 */
Al Virode597142008-03-19 09:43:49 +0000316static int check586(struct net_device *dev, unsigned size)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317{
Wang Chen4cf16532008-11-12 23:38:14 -0800318 struct priv *p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 int i;
320
Al Viro176f65f2008-03-19 09:44:29 +0000321 p->mapped = ioremap(dev->mem_start, size);
322 if (!p->mapped)
323 return 0;
324
Al Viroe06ee2b2008-03-19 09:43:59 +0000325 p->base = p->mapped + size - 0x01000000;
326 p->memtop = p->mapped + size;
Al Viro2d76c262008-03-19 09:43:29 +0000327 p->scp = (struct scp_struct __iomem *)(p->base + SCP_DEFAULT_ADDRESS);
Al Viro7f8cfd52008-03-19 09:44:09 +0000328 p->scb = (struct scb_struct __iomem *) p->mapped;
Al Viro76af5692008-03-19 09:44:19 +0000329 p->iscp = (struct iscp_struct __iomem *)p->scp - 1;
Al Viro2d76c262008-03-19 09:43:29 +0000330 memset_io(p->scp, 0, sizeof(struct scp_struct));
Alan Coxa197f692008-02-08 15:27:38 +0000331 for (i = 0; i < sizeof(struct scp_struct); i++)
332 /* memory was writeable? */
Al Viro2d76c262008-03-19 09:43:29 +0000333 if (readb((char __iomem *)p->scp + i))
Al Viro176f65f2008-03-19 09:44:29 +0000334 goto Enodev;
Alan Coxa197f692008-02-08 15:27:38 +0000335 writeb(SYSBUSVAL, &p->scp->sysbus); /* 1 = 8Bit-Bus, 0 = 16 Bit */
336 if (readb(&p->scp->sysbus) != SYSBUSVAL)
Al Viro176f65f2008-03-19 09:44:29 +0000337 goto Enodev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
Al Viro76af5692008-03-19 09:44:19 +0000339 if (!check_iscp(dev, p->mapped))
Al Viro176f65f2008-03-19 09:44:29 +0000340 goto Enodev;
Al Viro76af5692008-03-19 09:44:19 +0000341 if (!check_iscp(dev, p->iscp))
Al Viro176f65f2008-03-19 09:44:29 +0000342 goto Enodev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 return 1;
Al Viro176f65f2008-03-19 09:44:29 +0000344Enodev:
345 iounmap(p->mapped);
346 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347}
348
349/******************************************************************
350 * set iscp at the right place, called by ni52_probe1 and open586.
351 */
352static void alloc586(struct net_device *dev)
353{
Wang Chen4cf16532008-11-12 23:38:14 -0800354 struct priv *p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
356 ni_reset586();
Alan Coxa197f692008-02-08 15:27:38 +0000357 mdelay(32);
358
Alan Coxa197f692008-02-08 15:27:38 +0000359 memset_io(p->iscp, 0, sizeof(struct iscp_struct));
360 memset_io(p->scp , 0, sizeof(struct scp_struct));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
Alan Coxa197f692008-02-08 15:27:38 +0000362 writel(make24(p->iscp), &p->scp->iscp);
363 writeb(SYSBUSVAL, &p->scp->sysbus);
364 writew(make16(p->scb), &p->iscp->scb_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365
Alan Coxa197f692008-02-08 15:27:38 +0000366 writeb(1, &p->iscp->busy);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 ni_reset586();
368 ni_attn586();
369
Alan Coxa197f692008-02-08 15:27:38 +0000370 mdelay(32);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
Alan Coxa197f692008-02-08 15:27:38 +0000372 if (readb(&p->iscp->busy))
373 printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374
Alan Coxa197f692008-02-08 15:27:38 +0000375 p->reset = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376
Al Viro2d76c262008-03-19 09:43:29 +0000377 memset_io(p->scb, 0, sizeof(struct scb_struct));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378}
379
380/* set: io,irq,memstart,memend or set it when calling insmod */
Alan Coxa197f692008-02-08 15:27:38 +0000381static int irq = 9;
382static int io = 0x300;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383static long memstart; /* e.g 0xd0000 */
384static long memend; /* e.g 0xd4000 */
385
386/**********************************************
387 * probe the ni5210-card
388 */
389struct net_device * __init ni52_probe(int unit)
390{
391 struct net_device *dev = alloc_etherdev(sizeof(struct priv));
392 static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0};
Al Viro176f65f2008-03-19 09:44:29 +0000393 struct priv *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 int *port;
395 int err = 0;
396
397 if (!dev)
398 return ERR_PTR(-ENOMEM);
399
Wang Chen4cf16532008-11-12 23:38:14 -0800400 p = netdev_priv(dev);
Al Viro176f65f2008-03-19 09:44:29 +0000401
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 if (unit >= 0) {
403 sprintf(dev->name, "eth%d", unit);
404 netdev_boot_setup_check(dev);
405 io = dev->base_addr;
406 irq = dev->irq;
407 memstart = dev->mem_start;
408 memend = dev->mem_end;
409 }
410
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 if (io > 0x1ff) { /* Check a single specified location. */
412 err = ni52_probe1(dev, io);
413 } else if (io > 0) { /* Don't probe at all. */
414 err = -ENXIO;
415 } else {
416 for (port = ports; *port && ni52_probe1(dev, *port) ; port++)
417 ;
418 if (*port)
419 goto got_it;
420#ifdef FULL_IO_PROBE
421 for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8)
422 ;
423 if (io < 0x400)
424 goto got_it;
425#endif
426 err = -ENODEV;
427 }
428 if (err)
429 goto out;
430got_it:
431 err = register_netdev(dev);
432 if (err)
433 goto out1;
434 return dev;
435out1:
Al Viro176f65f2008-03-19 09:44:29 +0000436 iounmap(p->mapped);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 release_region(dev->base_addr, NI52_TOTAL_SIZE);
438out:
439 free_netdev(dev);
440 return ERR_PTR(err);
441}
442
Stephen Hemminger2c7669e2009-03-26 15:11:39 +0000443static const struct net_device_ops ni52_netdev_ops = {
444 .ndo_open = ni52_open,
445 .ndo_stop = ni52_close,
446 .ndo_get_stats = ni52_get_stats,
447 .ndo_tx_timeout = ni52_timeout,
448 .ndo_start_xmit = ni52_send_packet,
449 .ndo_set_multicast_list = set_multicast_list,
450 .ndo_change_mtu = eth_change_mtu,
451 .ndo_set_mac_address = eth_mac_addr,
452 .ndo_validate_addr = eth_validate_addr,
453};
454
Alan Coxa197f692008-02-08 15:27:38 +0000455static int __init ni52_probe1(struct net_device *dev, int ioaddr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456{
457 int i, size, retval;
Wang Chen4cf16532008-11-12 23:38:14 -0800458 struct priv *priv = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459
460 dev->base_addr = ioaddr;
461 dev->irq = irq;
462 dev->mem_start = memstart;
463 dev->mem_end = memend;
464
Al Viro7f8cfd52008-03-19 09:44:09 +0000465 spin_lock_init(&priv->spinlock);
466
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME))
468 return -EBUSY;
469
Alan Coxa197f692008-02-08 15:27:38 +0000470 if (!(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) {
472 retval = -ENODEV;
473 goto out;
474 }
475
Alan Coxa197f692008-02-08 15:27:38 +0000476 for (i = 0; i < ETH_ALEN; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 dev->dev_addr[i] = inb(dev->base_addr+i);
478
Joe Perches8e95a202009-12-03 07:58:21 +0000479 if (dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1 ||
480 dev->dev_addr[2] != NI52_ADDR2) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 retval = -ENODEV;
482 goto out;
483 }
484
Alan Coxa197f692008-02-08 15:27:38 +0000485 printk(KERN_INFO "%s: NI5210 found at %#3lx, ",
486 dev->name, dev->base_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487
488 /*
489 * check (or search) IO-Memory, 8K and 16K
490 */
491#ifdef MODULE
492 size = dev->mem_end - dev->mem_start;
Alan Coxa197f692008-02-08 15:27:38 +0000493 if (size != 0x2000 && size != 0x4000) {
494 printk("\n");
495 printk(KERN_ERR "%s: Invalid memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n", dev->name, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 retval = -ENODEV;
497 goto out;
498 }
Al Virode597142008-03-19 09:43:49 +0000499 if (!check586(dev, size)) {
Alan Coxa197f692008-02-08 15:27:38 +0000500 printk(KERN_ERR "?memcheck, Can't find memory at 0x%lx with size %d!\n", dev->mem_start, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 retval = -ENODEV;
502 goto out;
503 }
504#else
Alan Coxa197f692008-02-08 15:27:38 +0000505 if (dev->mem_start != 0) {
506 /* no auto-mem-probe */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 size = 0x4000; /* check for 16K mem */
Al Virode597142008-03-19 09:43:49 +0000508 if (!check586(dev, size)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 size = 0x2000; /* check for 8K mem */
Al Virode597142008-03-19 09:43:49 +0000510 if (!check586(dev, size)) {
Alan Coxa197f692008-02-08 15:27:38 +0000511 printk(KERN_ERR "?memprobe, Can't find memory at 0x%lx!\n", dev->mem_start);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 retval = -ENODEV;
513 goto out;
514 }
515 }
Alan Coxa197f692008-02-08 15:27:38 +0000516 } else {
517 static const unsigned long memaddrs[] = {
518 0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000,
519 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0
520 };
521 for (i = 0;; i++) {
522 if (!memaddrs[i]) {
523 printk(KERN_ERR "?memprobe, Can't find io-memory!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 retval = -ENODEV;
525 goto out;
526 }
527 dev->mem_start = memaddrs[i];
528 size = 0x2000; /* check for 8K mem */
Al Virode597142008-03-19 09:43:49 +0000529 if (check586(dev, size))
Alan Coxa197f692008-02-08 15:27:38 +0000530 /* 8K-check */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 break;
532 size = 0x4000; /* check for 16K mem */
Al Virode597142008-03-19 09:43:49 +0000533 if (check586(dev, size))
Alan Coxa197f692008-02-08 15:27:38 +0000534 /* 16K-check */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 break;
536 }
537 }
Alan Coxa197f692008-02-08 15:27:38 +0000538 /* set mem_end showed by 'ifconfig' */
539 dev->mem_end = dev->mem_start + size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540#endif
541
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 alloc586(dev);
543
544 /* set number of receive-buffs according to memsize */
Alan Coxa197f692008-02-08 15:27:38 +0000545 if (size == 0x2000)
Al Viroe06ee2b2008-03-19 09:43:59 +0000546 priv->num_recv_buffs = NUM_RECV_BUFFS_8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 else
Al Viroe06ee2b2008-03-19 09:43:59 +0000548 priv->num_recv_buffs = NUM_RECV_BUFFS_16;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549
Alan Coxa197f692008-02-08 15:27:38 +0000550 printk(KERN_DEBUG "Memaddr: 0x%lx, Memsize: %d, ",
551 dev->mem_start, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552
Alan Coxa197f692008-02-08 15:27:38 +0000553 if (dev->irq < 2) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 unsigned long irq_mask;
555
556 irq_mask = probe_irq_on();
557 ni_reset586();
558 ni_attn586();
559
560 mdelay(20);
561 dev->irq = probe_irq_off(irq_mask);
Alan Coxa197f692008-02-08 15:27:38 +0000562 if (!dev->irq) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 printk("?autoirq, Failed to detect IRQ line!\n");
564 retval = -EAGAIN;
Al Viro176f65f2008-03-19 09:44:29 +0000565 iounmap(priv->mapped);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 goto out;
567 }
Alan Coxa197f692008-02-08 15:27:38 +0000568 printk("IRQ %d (autodetected).\n", dev->irq);
569 } else {
570 if (dev->irq == 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 dev->irq = 9;
Alan Coxa197f692008-02-08 15:27:38 +0000572 printk("IRQ %d (assigned and not checked!).\n", dev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 }
574
Stephen Hemminger2c7669e2009-03-26 15:11:39 +0000575 dev->netdev_ops = &ni52_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 dev->watchdog_timeo = HZ/20;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577
578 return 0;
579out:
580 release_region(ioaddr, NI52_TOTAL_SIZE);
581 return retval;
582}
583
584/**********************************************
585 * init the chip (ni52-interrupt should be disabled?!)
586 * needs a correct 'allocated' memory
587 */
588
589static int init586(struct net_device *dev)
590{
Al Viro2d76c262008-03-19 09:43:29 +0000591 void __iomem *ptr;
Alan Coxa197f692008-02-08 15:27:38 +0000592 int i, result = 0;
Wang Chen4cf16532008-11-12 23:38:14 -0800593 struct priv *p = netdev_priv(dev);
Al Viro2d76c262008-03-19 09:43:29 +0000594 struct configure_cmd_struct __iomem *cfg_cmd;
595 struct iasetup_cmd_struct __iomem *ias_cmd;
596 struct tdr_cmd_struct __iomem *tdr_cmd;
597 struct mcsetup_cmd_struct __iomem *mc_cmd;
Jiri Pirkof9dcbcc2010-02-23 09:19:49 +0000598 struct dev_mc_list *dmi;
Jiri Pirko4cd24ea2010-02-08 04:30:35 +0000599 int num_addrs = netdev_mc_count(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600
Al Viro2d76c262008-03-19 09:43:29 +0000601 ptr = p->scb + 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602
Al Viro2d76c262008-03-19 09:43:29 +0000603 cfg_cmd = ptr; /* configure-command */
Alan Coxa197f692008-02-08 15:27:38 +0000604 writew(0, &cfg_cmd->cmd_status);
605 writew(CMD_CONFIGURE | CMD_LAST, &cfg_cmd->cmd_cmd);
606 writew(0xFFFF, &cfg_cmd->cmd_link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607
Alan Coxa197f692008-02-08 15:27:38 +0000608 /* number of cfg bytes */
609 writeb(0x0a, &cfg_cmd->byte_cnt);
610 /* fifo-limit (8=tx:32/rx:64) */
611 writeb(fifo, &cfg_cmd->fifo);
612 /* hold or discard bad recv frames (bit 7) */
613 writeb(0x40, &cfg_cmd->sav_bf);
614 /* addr_len |!src_insert |pre-len |loopback */
615 writeb(0x2e, &cfg_cmd->adr_len);
616 writeb(0x00, &cfg_cmd->priority);
Joe Perchesa419aef2009-08-18 11:18:35 -0700617 writeb(0x60, &cfg_cmd->ifs);
Alan Coxa197f692008-02-08 15:27:38 +0000618 writeb(0x00, &cfg_cmd->time_low);
619 writeb(0xf2, &cfg_cmd->time_high);
Joe Perchesa419aef2009-08-18 11:18:35 -0700620 writeb(0x00, &cfg_cmd->promisc);
Alan Coxa197f692008-02-08 15:27:38 +0000621 if (dev->flags & IFF_ALLMULTI) {
Al Viro2d76c262008-03-19 09:43:29 +0000622 int len = ((char __iomem *)p->iscp - (char __iomem *)ptr - 8) / 6;
Alan Coxa197f692008-02-08 15:27:38 +0000623 if (num_addrs > len) {
624 printk(KERN_ERR "%s: switching to promisc. mode\n",
625 dev->name);
Wang Chenc16d1182008-07-22 13:13:12 +0800626 writeb(0x01, &cfg_cmd->promisc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 }
628 }
Alan Coxa197f692008-02-08 15:27:38 +0000629 if (dev->flags & IFF_PROMISC)
630 writeb(0x01, &cfg_cmd->promisc);
631 writeb(0x00, &cfg_cmd->carr_coll);
632 writew(make16(cfg_cmd), &p->scb->cbl_offset);
Al Viro05bd8312008-03-19 09:44:39 +0000633 writeb(0, &p->scb->cmd_ruc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634
Alan Coxa197f692008-02-08 15:27:38 +0000635 writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636 ni_attn586();
637
Alan Coxa197f692008-02-08 15:27:38 +0000638 wait_for_stat_compl(cfg_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639
Alan Coxa197f692008-02-08 15:27:38 +0000640 if ((readw(&cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) !=
641 (STAT_COMPL|STAT_OK)) {
642 printk(KERN_ERR "%s: configure command failed: %x\n",
643 dev->name, readw(&cfg_cmd->cmd_status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 return 1;
645 }
646
647 /*
648 * individual address setup
649 */
650
Al Viro2d76c262008-03-19 09:43:29 +0000651 ias_cmd = ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652
Alan Coxa197f692008-02-08 15:27:38 +0000653 writew(0, &ias_cmd->cmd_status);
654 writew(CMD_IASETUP | CMD_LAST, &ias_cmd->cmd_cmd);
655 writew(0xffff, &ias_cmd->cmd_link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656
Al Viro2d76c262008-03-19 09:43:29 +0000657 memcpy_toio(&ias_cmd->iaddr, (char *)dev->dev_addr, ETH_ALEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658
Alan Coxa197f692008-02-08 15:27:38 +0000659 writew(make16(ias_cmd), &p->scb->cbl_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660
Alan Coxa197f692008-02-08 15:27:38 +0000661 writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 ni_attn586();
663
Alan Coxa197f692008-02-08 15:27:38 +0000664 wait_for_stat_compl(ias_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665
Alan Coxa197f692008-02-08 15:27:38 +0000666 if ((readw(&ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) !=
667 (STAT_OK|STAT_COMPL)) {
668 printk(KERN_ERR "%s (ni52): individual address setup command failed: %04x\n", dev->name, readw(&ias_cmd->cmd_status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 return 1;
670 }
671
672 /*
673 * TDR, wire check .. e.g. no resistor e.t.c
674 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400675
Al Viro2d76c262008-03-19 09:43:29 +0000676 tdr_cmd = ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677
Alan Coxa197f692008-02-08 15:27:38 +0000678 writew(0, &tdr_cmd->cmd_status);
679 writew(CMD_TDR | CMD_LAST, &tdr_cmd->cmd_cmd);
680 writew(0xffff, &tdr_cmd->cmd_link);
681 writew(0, &tdr_cmd->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682
Alan Coxa197f692008-02-08 15:27:38 +0000683 writew(make16(tdr_cmd), &p->scb->cbl_offset);
684 writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 ni_attn586();
686
Alan Coxa197f692008-02-08 15:27:38 +0000687 wait_for_stat_compl(tdr_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688
Alan Coxa197f692008-02-08 15:27:38 +0000689 if (!(readw(&tdr_cmd->cmd_status) & STAT_COMPL))
690 printk(KERN_ERR "%s: Problems while running the TDR.\n",
691 dev->name);
692 else {
693 udelay(16);
694 result = readw(&tdr_cmd->status);
695 writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 ni_attn586(); /* ack the interrupts */
697
Alan Coxa197f692008-02-08 15:27:38 +0000698 if (result & TDR_LNK_OK)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699 ;
Alan Coxa197f692008-02-08 15:27:38 +0000700 else if (result & TDR_XCVR_PRB)
701 printk(KERN_ERR "%s: TDR: Transceiver problem. Check the cable(s)!\n",
702 dev->name);
703 else if (result & TDR_ET_OPN)
704 printk(KERN_ERR "%s: TDR: No correct termination %d clocks away.\n",
705 dev->name, result & TDR_TIMEMASK);
706 else if (result & TDR_ET_SRT) {
707 /* time == 0 -> strange :-) */
708 if (result & TDR_TIMEMASK)
709 printk(KERN_ERR "%s: TDR: Detected a short circuit %d clocks away.\n",
710 dev->name, result & TDR_TIMEMASK);
711 } else
712 printk(KERN_ERR "%s: TDR: Unknown status %04x\n",
713 dev->name, result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 }
715
716 /*
717 * Multicast setup
718 */
Alan Coxa197f692008-02-08 15:27:38 +0000719 if (num_addrs && !(dev->flags & IFF_PROMISC)) {
Al Viro2d76c262008-03-19 09:43:29 +0000720 mc_cmd = ptr;
Alan Coxa197f692008-02-08 15:27:38 +0000721 writew(0, &mc_cmd->cmd_status);
722 writew(CMD_MCSETUP | CMD_LAST, &mc_cmd->cmd_cmd);
723 writew(0xffff, &mc_cmd->cmd_link);
724 writew(num_addrs * 6, &mc_cmd->mc_cnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725
Jiri Pirkof9dcbcc2010-02-23 09:19:49 +0000726 i = 0;
727 netdev_for_each_mc_addr(dmi, dev)
728 memcpy_toio(mc_cmd->mc_list[i++], dmi->dmi_addr, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729
Alan Coxa197f692008-02-08 15:27:38 +0000730 writew(make16(mc_cmd), &p->scb->cbl_offset);
731 writeb(CUC_START, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 ni_attn586();
733
Alan Coxa197f692008-02-08 15:27:38 +0000734 wait_for_stat_compl(mc_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735
Alan Coxa197f692008-02-08 15:27:38 +0000736 if ((readw(&mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK))
737 != (STAT_COMPL|STAT_OK))
738 printk(KERN_ERR "%s: Can't apply multicast-address-list.\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 }
740
741 /*
742 * alloc nop/xmit-cmds
743 */
744#if (NUM_XMIT_BUFFS == 1)
Alan Coxa197f692008-02-08 15:27:38 +0000745 for (i = 0; i < 2; i++) {
Al Viro2d76c262008-03-19 09:43:29 +0000746 p->nop_cmds[i] = ptr;
Alan Coxa197f692008-02-08 15:27:38 +0000747 writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd);
748 writew(0, &p->nop_cmds[i]->cmd_status);
749 writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link);
Al Viro2d76c262008-03-19 09:43:29 +0000750 ptr = ptr + sizeof(struct nop_cmd_struct);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 }
752#else
Alan Coxa197f692008-02-08 15:27:38 +0000753 for (i = 0; i < NUM_XMIT_BUFFS; i++) {
Al Viro2d76c262008-03-19 09:43:29 +0000754 p->nop_cmds[i] = ptr;
Alan Coxa197f692008-02-08 15:27:38 +0000755 writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd);
756 writew(0, &p->nop_cmds[i]->cmd_status);
757 writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link);
Al Viro2d76c262008-03-19 09:43:29 +0000758 ptr = ptr + sizeof(struct nop_cmd_struct);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 }
760#endif
761
Al Viro2d76c262008-03-19 09:43:29 +0000762 ptr = alloc_rfa(dev, ptr); /* init receive-frame-area */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763
764 /*
765 * alloc xmit-buffs / init xmit_cmds
766 */
Alan Coxa197f692008-02-08 15:27:38 +0000767 for (i = 0; i < NUM_XMIT_BUFFS; i++) {
768 /* Transmit cmd/buff 0 */
Al Viro2d76c262008-03-19 09:43:29 +0000769 p->xmit_cmds[i] = ptr;
770 ptr = ptr + sizeof(struct transmit_cmd_struct);
771 p->xmit_cbuffs[i] = ptr; /* char-buffs */
772 ptr = ptr + XMIT_BUFF_SIZE;
773 p->xmit_buffs[i] = ptr; /* TBD */
774 ptr = ptr + sizeof(struct tbd_struct);
775 if ((void __iomem *)ptr > (void __iomem *)p->iscp) {
Alan Coxa197f692008-02-08 15:27:38 +0000776 printk(KERN_ERR "%s: not enough shared-mem for your configuration!\n",
777 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778 return 1;
779 }
Al Viro2d76c262008-03-19 09:43:29 +0000780 memset_io(p->xmit_cmds[i], 0,
Alan Coxa197f692008-02-08 15:27:38 +0000781 sizeof(struct transmit_cmd_struct));
Al Viro2d76c262008-03-19 09:43:29 +0000782 memset_io(p->xmit_buffs[i], 0,
Alan Coxa197f692008-02-08 15:27:38 +0000783 sizeof(struct tbd_struct));
784 writew(make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]),
785 &p->xmit_cmds[i]->cmd_link);
786 writew(STAT_COMPL, &p->xmit_cmds[i]->cmd_status);
787 writew(CMD_XMIT|CMD_INT, &p->xmit_cmds[i]->cmd_cmd);
788 writew(make16(p->xmit_buffs[i]), &p->xmit_cmds[i]->tbd_offset);
789 writew(0xffff, &p->xmit_buffs[i]->next);
790 writel(make24(p->xmit_cbuffs[i]), &p->xmit_buffs[i]->buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 }
792
793 p->xmit_count = 0;
794 p->xmit_last = 0;
795#ifndef NO_NOPCOMMANDS
796 p->nop_point = 0;
797#endif
798
799 /*
800 * 'start transmitter'
801 */
802#ifndef NO_NOPCOMMANDS
Alan Coxa197f692008-02-08 15:27:38 +0000803 writew(make16(p->nop_cmds[0]), &p->scb->cbl_offset);
804 writeb(CUC_START, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +0000806 wait_for_scb_cmd(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807#else
Alan Coxa197f692008-02-08 15:27:38 +0000808 writew(make16(p->xmit_cmds[0]), &p->xmit_cmds[0]->cmd_link);
809 writew(CMD_XMIT | CMD_SUSPEND | CMD_INT, &p->xmit_cmds[0]->cmd_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810#endif
811
812 /*
813 * ack. interrupts
814 */
Alan Coxa197f692008-02-08 15:27:38 +0000815 writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +0000817 udelay(16);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818
819 ni_enaint();
820
821 return 0;
822}
823
824/******************************************************
825 * This is a helper routine for ni52_rnr_int() and init586().
826 * It sets up the Receive Frame Area (RFA).
827 */
828
Al Viro2d76c262008-03-19 09:43:29 +0000829static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830{
Al Viro2d76c262008-03-19 09:43:29 +0000831 struct rfd_struct __iomem *rfd = ptr;
832 struct rbd_struct __iomem *rbd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833 int i;
Wang Chen4cf16532008-11-12 23:38:14 -0800834 struct priv *p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835
Al Viro2d76c262008-03-19 09:43:29 +0000836 memset_io(rfd, 0,
Alan Coxa197f692008-02-08 15:27:38 +0000837 sizeof(struct rfd_struct) * (p->num_recv_buffs + rfdadd));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838 p->rfd_first = rfd;
839
Alan Coxa197f692008-02-08 15:27:38 +0000840 for (i = 0; i < (p->num_recv_buffs + rfdadd); i++) {
841 writew(make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd)),
842 &rfd[i].next);
843 writew(0xffff, &rfd[i].rbd_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844 }
Alan Coxa197f692008-02-08 15:27:38 +0000845 /* RU suspend */
846 writeb(RFD_SUSP, &rfd[p->num_recv_buffs-1+rfdadd].last);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847
Al Viro2d76c262008-03-19 09:43:29 +0000848 ptr = rfd + (p->num_recv_buffs + rfdadd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849
Al Viro2d76c262008-03-19 09:43:29 +0000850 rbd = ptr;
851 ptr = rbd + p->num_recv_buffs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852
853 /* clr descriptors */
Al Viro2d76c262008-03-19 09:43:29 +0000854 memset_io(rbd, 0, sizeof(struct rbd_struct) * (p->num_recv_buffs));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855
Alan Coxa197f692008-02-08 15:27:38 +0000856 for (i = 0; i < p->num_recv_buffs; i++) {
857 writew(make16(rbd + (i+1) % p->num_recv_buffs), &rbd[i].next);
858 writew(RECV_BUFF_SIZE, &rbd[i].size);
859 writel(make24(ptr), &rbd[i].buffer);
Al Viro2d76c262008-03-19 09:43:29 +0000860 ptr = ptr + RECV_BUFF_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862 p->rfd_top = p->rfd_first;
863 p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
864
Alan Coxa197f692008-02-08 15:27:38 +0000865 writew(make16(p->rfd_first), &p->scb->rfa_offset);
866 writew(make16(rbd), &p->rfd_first->rbd_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867
868 return ptr;
869}
870
871
872/**************************************************
873 * Interrupt Handler ...
874 */
875
Alan Coxa197f692008-02-08 15:27:38 +0000876static irqreturn_t ni52_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877{
878 struct net_device *dev = dev_id;
Alan Coxa197f692008-02-08 15:27:38 +0000879 unsigned int stat;
880 int cnt = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881 struct priv *p;
882
Wang Chen4cf16532008-11-12 23:38:14 -0800883 p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884
Alan Coxa197f692008-02-08 15:27:38 +0000885 if (debuglevel > 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886 printk("I");
887
Alan Coxa197f692008-02-08 15:27:38 +0000888 spin_lock(&p->spinlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889
Alan Coxa197f692008-02-08 15:27:38 +0000890 wait_for_scb_cmd(dev); /* wait for last command */
891
892 while ((stat = readb(&p->scb->cus) & STAT_MASK)) {
893 writeb(stat, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894 ni_attn586();
895
Alan Coxa197f692008-02-08 15:27:38 +0000896 if (stat & STAT_FR) /* received a frame */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897 ni52_rcv_int(dev);
898
Alan Coxa197f692008-02-08 15:27:38 +0000899 if (stat & STAT_RNR) { /* RU went 'not ready' */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900 printk("(R)");
Alan Coxa197f692008-02-08 15:27:38 +0000901 if (readb(&p->scb->rus) & RU_SUSPEND) {
902 /* special case: RU_SUSPEND */
903 wait_for_scb_cmd(dev);
Al Viro05bd8312008-03-19 09:44:39 +0000904 writeb(RUC_RESUME, &p->scb->cmd_ruc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +0000906 wait_for_scb_cmd_ruc(dev);
907 } else {
908 printk(KERN_ERR "%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",
909 dev->name, stat, readb(&p->scb->rus));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910 ni52_rnr_int(dev);
911 }
912 }
913
Alan Coxa197f692008-02-08 15:27:38 +0000914 /* Command with I-bit set complete */
915 if (stat & STAT_CX)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916 ni52_xmt_int(dev);
917
918#ifndef NO_NOPCOMMANDS
Alan Coxa197f692008-02-08 15:27:38 +0000919 if (stat & STAT_CNA) { /* CU went 'not ready' */
920 if (netif_running(dev))
921 printk(KERN_ERR "%s: oops! CU has left active state. stat: %04x/%02x.\n",
922 dev->name, stat, readb(&p->scb->cus));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 }
924#endif
925
Alan Coxa197f692008-02-08 15:27:38 +0000926 if (debuglevel > 1)
927 printk("%d", cnt++);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928
Alan Coxa197f692008-02-08 15:27:38 +0000929 /* Wait for ack. (ni52_xmt_int can be faster than ack!!) */
930 wait_for_scb_cmd(dev);
Al Viro05bd8312008-03-19 09:44:39 +0000931 if (readb(&p->scb->cmd_cuc)) { /* timed out? */
Alan Coxa197f692008-02-08 15:27:38 +0000932 printk(KERN_ERR "%s: Acknowledge timed out.\n",
933 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 ni_disint();
935 break;
936 }
937 }
Alan Coxa197f692008-02-08 15:27:38 +0000938 spin_unlock(&p->spinlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939
Alan Coxa197f692008-02-08 15:27:38 +0000940 if (debuglevel > 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941 printk("i");
942 return IRQ_HANDLED;
943}
944
945/*******************************************************
946 * receive-interrupt
947 */
948
949static void ni52_rcv_int(struct net_device *dev)
950{
Alan Coxa197f692008-02-08 15:27:38 +0000951 int status, cnt = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 unsigned short totlen;
953 struct sk_buff *skb;
Al Viro2d76c262008-03-19 09:43:29 +0000954 struct rbd_struct __iomem *rbd;
Wang Chen4cf16532008-11-12 23:38:14 -0800955 struct priv *p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956
Alan Coxa197f692008-02-08 15:27:38 +0000957 if (debuglevel > 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958 printk("R");
959
Alan Coxa197f692008-02-08 15:27:38 +0000960 for (; (status = readb(&p->rfd_top->stat_high)) & RFD_COMPL;) {
Al Viro05bd8312008-03-19 09:44:39 +0000961 rbd = make32(readw(&p->rfd_top->rbd_offset));
Alan Coxa197f692008-02-08 15:27:38 +0000962 if (status & RFD_OK) { /* frame received without error? */
963 totlen = readw(&rbd->status);
964 if (totlen & RBD_LAST) {
965 /* the first and the last buffer? */
966 totlen &= RBD_MASK; /* length of this frame */
967 writew(0x00, &rbd->status);
968 skb = (struct sk_buff *)dev_alloc_skb(totlen+2);
969 if (skb != NULL) {
970 skb_reserve(skb, 2);
971 skb_put(skb, totlen);
Al Viro05bd8312008-03-19 09:44:39 +0000972 memcpy_fromio(skb->data, p->base + readl(&rbd->buffer), totlen);
Alan Coxa197f692008-02-08 15:27:38 +0000973 skb->protocol = eth_type_trans(skb, dev);
974 netif_rx(skb);
Alan Coxa197f692008-02-08 15:27:38 +0000975 p->stats.rx_packets++;
976 p->stats.rx_bytes += totlen;
977 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978 p->stats.rx_dropped++;
Alan Coxa197f692008-02-08 15:27:38 +0000979 } else {
980 int rstat;
981 /* free all RBD's until RBD_LAST is set */
982 totlen = 0;
983 while (!((rstat = readw(&rbd->status)) & RBD_LAST)) {
984 totlen += rstat & RBD_MASK;
985 if (!rstat) {
986 printk(KERN_ERR "%s: Whoops .. no end mark in RBD list\n", dev->name);
987 break;
988 }
989 writew(0, &rbd->status);
Al Viro05bd8312008-03-19 09:44:39 +0000990 rbd = make32(readw(&rbd->next));
Alan Coxa197f692008-02-08 15:27:38 +0000991 }
992 totlen += rstat & RBD_MASK;
993 writew(0, &rbd->status);
994 printk(KERN_ERR "%s: received oversized frame! length: %d\n",
995 dev->name, totlen);
996 p->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997 }
Alan Coxa197f692008-02-08 15:27:38 +0000998 } else {/* frame !(ok), only with 'save-bad-frames' */
999 printk(KERN_ERR "%s: oops! rfd-error-status: %04x\n",
1000 dev->name, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001 p->stats.rx_errors++;
1002 }
Alan Coxa197f692008-02-08 15:27:38 +00001003 writeb(0, &p->rfd_top->stat_high);
1004 writeb(RFD_SUSP, &p->rfd_top->last); /* maybe exchange by RFD_LAST */
1005 writew(0xffff, &p->rfd_top->rbd_offset);
1006 writeb(0, &p->rfd_last->last); /* delete RFD_SUSP */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007 p->rfd_last = p->rfd_top;
Al Viro05bd8312008-03-19 09:44:39 +00001008 p->rfd_top = make32(readw(&p->rfd_top->next)); /* step to next RFD */
Alan Coxa197f692008-02-08 15:27:38 +00001009 writew(make16(p->rfd_top), &p->scb->rfa_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010
Alan Coxa197f692008-02-08 15:27:38 +00001011 if (debuglevel > 0)
1012 printk("%d", cnt++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013 }
1014
Alan Coxa197f692008-02-08 15:27:38 +00001015 if (automatic_resume) {
1016 wait_for_scb_cmd(dev);
1017 writeb(RUC_RESUME, &p->scb->cmd_ruc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +00001019 wait_for_scb_cmd_ruc(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020 }
1021
1022#ifdef WAIT_4_BUSY
1023 {
1024 int i;
Alan Coxa197f692008-02-08 15:27:38 +00001025 for (i = 0; i < 1024; i++) {
1026 if (p->rfd_top->status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 break;
Alan Coxa197f692008-02-08 15:27:38 +00001028 udelay(16);
1029 if (i == 1023)
1030 printk(KERN_ERR "%s: RU hasn't fetched next RFD (not busy/complete)\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 }
1032 }
1033#endif
Alan Coxa197f692008-02-08 15:27:38 +00001034 if (debuglevel > 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 printk("r");
1036}
1037
1038/**********************************************************
1039 * handle 'Receiver went not ready'.
1040 */
1041
1042static void ni52_rnr_int(struct net_device *dev)
1043{
Wang Chen4cf16532008-11-12 23:38:14 -08001044 struct priv *p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045
1046 p->stats.rx_errors++;
1047
Alan Coxa197f692008-02-08 15:27:38 +00001048 wait_for_scb_cmd(dev); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
1049 writeb(RUC_ABORT, &p->scb->cmd_ruc); /* usually the RU is in the 'no resource'-state .. abort it now. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +00001051 wait_for_scb_cmd_ruc(dev); /* wait for accept cmd. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052
Al Viro2d76c262008-03-19 09:43:29 +00001053 alloc_rfa(dev, p->rfd_first);
Alan Coxa197f692008-02-08 15:27:38 +00001054 /* maybe add a check here, before restarting the RU */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 startrecv586(dev); /* restart RU */
1056
Al Viro05bd8312008-03-19 09:44:39 +00001057 printk(KERN_ERR "%s: Receive-Unit restarted. Status: %04x\n",
1058 dev->name, readb(&p->scb->rus));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059
1060}
1061
1062/**********************************************************
1063 * handle xmit - interrupt
1064 */
1065
1066static void ni52_xmt_int(struct net_device *dev)
1067{
1068 int status;
Wang Chen4cf16532008-11-12 23:38:14 -08001069 struct priv *p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070
Alan Coxa197f692008-02-08 15:27:38 +00001071 if (debuglevel > 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072 printk("X");
1073
Alan Coxa197f692008-02-08 15:27:38 +00001074 status = readw(&p->xmit_cmds[p->xmit_last]->cmd_status);
1075 if (!(status & STAT_COMPL))
1076 printk(KERN_ERR "%s: strange .. xmit-int without a 'COMPLETE'\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077
Alan Coxa197f692008-02-08 15:27:38 +00001078 if (status & STAT_OK) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079 p->stats.tx_packets++;
1080 p->stats.collisions += (status & TCMD_MAXCOLLMASK);
Alan Coxa197f692008-02-08 15:27:38 +00001081 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082 p->stats.tx_errors++;
Alan Coxa197f692008-02-08 15:27:38 +00001083 if (status & TCMD_LATECOLL) {
1084 printk(KERN_ERR "%s: late collision detected.\n",
1085 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086 p->stats.collisions++;
Alan Coxa197f692008-02-08 15:27:38 +00001087 } else if (status & TCMD_NOCARRIER) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088 p->stats.tx_carrier_errors++;
Alan Coxa197f692008-02-08 15:27:38 +00001089 printk(KERN_ERR "%s: no carrier detected.\n",
1090 dev->name);
1091 } else if (status & TCMD_LOSTCTS)
1092 printk(KERN_ERR "%s: loss of CTS detected.\n",
1093 dev->name);
1094 else if (status & TCMD_UNDERRUN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095 p->stats.tx_fifo_errors++;
Alan Coxa197f692008-02-08 15:27:38 +00001096 printk(KERN_ERR "%s: DMA underrun detected.\n",
1097 dev->name);
1098 } else if (status & TCMD_MAXCOLL) {
1099 printk(KERN_ERR "%s: Max. collisions exceeded.\n",
1100 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 p->stats.collisions += 16;
1102 }
1103 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001104#if (NUM_XMIT_BUFFS > 1)
Alan Coxa197f692008-02-08 15:27:38 +00001105 if ((++p->xmit_last) == NUM_XMIT_BUFFS)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106 p->xmit_last = 0;
1107#endif
1108 netif_wake_queue(dev);
1109}
1110
1111/***********************************************************
1112 * (re)start the receiver
1113 */
1114
1115static void startrecv586(struct net_device *dev)
1116{
Wang Chen4cf16532008-11-12 23:38:14 -08001117 struct priv *p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118
Alan Coxa197f692008-02-08 15:27:38 +00001119 wait_for_scb_cmd(dev);
1120 wait_for_scb_cmd_ruc(dev);
1121 writew(make16(p->rfd_first), &p->scb->rfa_offset);
1122 writeb(RUC_START, &p->scb->cmd_ruc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123 ni_attn586(); /* start cmd. */
Alan Coxa197f692008-02-08 15:27:38 +00001124 wait_for_scb_cmd_ruc(dev);
1125 /* wait for accept cmd. (no timeout!!) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126}
1127
1128static void ni52_timeout(struct net_device *dev)
1129{
Wang Chen4cf16532008-11-12 23:38:14 -08001130 struct priv *p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131#ifndef NO_NOPCOMMANDS
Alan Coxa197f692008-02-08 15:27:38 +00001132 if (readb(&p->scb->cus) & CU_ACTIVE) { /* COMMAND-UNIT active? */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 netif_wake_queue(dev);
1134#ifdef DEBUG
Alan Coxa197f692008-02-08 15:27:38 +00001135 printk(KERN_ERR "%s: strange ... timeout with CU active?!?\n",
1136 dev->name);
1137 printk(KERN_ERR "%s: X0: %04x N0: %04x N1: %04x %d\n",
1138 dev->name, (int)p->xmit_cmds[0]->cmd_status,
1139 readw(&p->nop_cmds[0]->cmd_status),
1140 readw(&p->nop_cmds[1]->cmd_status),
1141 p->nop_point);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142#endif
Alan Coxa197f692008-02-08 15:27:38 +00001143 writeb(CUC_ABORT, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +00001145 wait_for_scb_cmd(dev);
1146 writew(make16(p->nop_cmds[p->nop_point]), &p->scb->cbl_offset);
1147 writeb(CUC_START, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148 ni_attn586();
Alan Coxa197f692008-02-08 15:27:38 +00001149 wait_for_scb_cmd(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150 dev->trans_start = jiffies;
1151 return 0;
1152 }
1153#endif
1154 {
1155#ifdef DEBUG
Alan Coxa197f692008-02-08 15:27:38 +00001156 printk(KERN_ERR "%s: xmitter timed out, try to restart! stat: %02x\n",
1157 dev->name, readb(&p->scb->cus));
1158 printk(KERN_ERR "%s: command-stats: %04x %04x\n",
1159 dev->name,
1160 readw(&p->xmit_cmds[0]->cmd_status),
1161 readw(&p->xmit_cmds[1]->cmd_status));
1162 printk(KERN_ERR "%s: check, whether you set the right interrupt number!\n",
1163 dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164#endif
1165 ni52_close(dev);
1166 ni52_open(dev);
1167 }
1168 dev->trans_start = jiffies;
1169}
1170
1171/******************************************************
1172 * send frame
1173 */
1174
Stephen Hemminger613573252009-08-31 19:50:58 +00001175static netdev_tx_t ni52_send_packet(struct sk_buff *skb,
1176 struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177{
Alan Coxa197f692008-02-08 15:27:38 +00001178 int len, i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001179#ifndef NO_NOPCOMMANDS
1180 int next_nop;
1181#endif
Wang Chen4cf16532008-11-12 23:38:14 -08001182 struct priv *p = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001183
Alan Coxa197f692008-02-08 15:27:38 +00001184 if (skb->len > XMIT_BUFF_SIZE) {
1185 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);
Patrick McHardyec634fe2009-07-05 19:23:38 -07001186 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187 }
1188
1189 netif_stop_queue(dev);
1190
Al Viro05bd8312008-03-19 09:44:39 +00001191 memcpy_toio(p->xmit_cbuffs[p->xmit_count], skb->data, skb->len);
Alan Coxa197f692008-02-08 15:27:38 +00001192 len = skb->len;
1193 if (len < ETH_ZLEN) {
1194 len = ETH_ZLEN;
Al Viro05bd8312008-03-19 09:44:39 +00001195 memset_io(p->xmit_cbuffs[p->xmit_count]+skb->len, 0,
Alan Coxa197f692008-02-08 15:27:38 +00001196 len - skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198
1199#if (NUM_XMIT_BUFFS == 1)
1200# ifdef NO_NOPCOMMANDS
1201
1202#ifdef DEBUG
Al Viro05bd8312008-03-19 09:44:39 +00001203 if (readb(&p->scb->cus) & CU_ACTIVE) {
Alan Coxa197f692008-02-08 15:27:38 +00001204 printk(KERN_ERR "%s: Hmmm .. CU is still running and we wanna send a new packet.\n", dev->name);
1205 printk(KERN_ERR "%s: stat: %04x %04x\n",
1206 dev->name, readb(&p->scb->cus),
1207 readw(&p->xmit_cmds[0]->cmd_status));
1208 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209#endif
Al Viro05bd8312008-03-19 09:44:39 +00001210 writew(TBD_LAST | len, &p->xmit_buffs[0]->size);
Alan Coxa197f692008-02-08 15:27:38 +00001211 for (i = 0; i < 16; i++) {
1212 writew(0, &p->xmit_cmds[0]->cmd_status);
1213 wait_for_scb_cmd(dev);
1214 if ((readb(&p->scb->cus) & CU_STATUS) == CU_SUSPEND)
1215 writeb(CUC_RESUME, &p->scb->cmd_cuc);
1216 else {
1217 writew(make16(p->xmit_cmds[0]), &p->scb->cbl_offset);
1218 writeb(CUC_START, &p->scb->cmd_cuc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001219 }
Alan Coxa197f692008-02-08 15:27:38 +00001220 ni_attn586();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001221 dev->trans_start = jiffies;
Alan Coxa197f692008-02-08 15:27:38 +00001222 if (!i)
1223 dev_kfree_skb(skb);
1224 wait_for_scb_cmd(dev);
1225 /* test it, because CU sometimes doesn't start immediately */
1226 if (readb(&p->scb->cus) & CU_ACTIVE)
1227 break;
1228 if (readw(&p->xmit_cmds[0]->cmd_status))
1229 break;
1230 if (i == 15)
1231 printk(KERN_WARNING "%s: Can't start transmit-command.\n", dev->name);
1232 }
1233# else
1234 next_nop = (p->nop_point + 1) & 0x1;
1235 writew(TBD_LAST | len, &p->xmit_buffs[0]->size);
1236 writew(make16(p->nop_cmds[next_nop]), &p->xmit_cmds[0]->cmd_link);
1237 writew(make16(p->nop_cmds[next_nop]),
1238 &p->nop_cmds[next_nop]->cmd_link);
1239 writew(0, &p->xmit_cmds[0]->cmd_status);
1240 writew(0, &p->nop_cmds[next_nop]->cmd_status);
1241
1242 writew(make16(p->xmit_cmds[0]), &p->nop_cmds[p->nop_point]->cmd_link);
1243 dev->trans_start = jiffies;
1244 p->nop_point = next_nop;
1245 dev_kfree_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246# endif
1247#else
Alan Coxa197f692008-02-08 15:27:38 +00001248 writew(TBD_LAST | len, &p->xmit_buffs[p->xmit_count]->size);
1249 next_nop = p->xmit_count + 1
1250 if (next_nop == NUM_XMIT_BUFFS)
1251 next_nop = 0;
1252 writew(0, &p->xmit_cmds[p->xmit_count]->cmd_status);
1253 /* linkpointer of xmit-command already points to next nop cmd */
1254 writew(make16(p->nop_cmds[next_nop]),
1255 &p->nop_cmds[next_nop]->cmd_link);
1256 writew(0, &p->nop_cmds[next_nop]->cmd_status);
1257 writew(make16(p->xmit_cmds[p->xmit_count]),
1258 &p->nop_cmds[p->xmit_count]->cmd_link);
1259 dev->trans_start = jiffies;
1260 p->xmit_count = next_nop;
1261 {
1262 unsigned long flags;
1263 spin_lock_irqsave(&p->spinlock);
1264 if (p->xmit_count != p->xmit_last)
1265 netif_wake_queue(dev);
1266 spin_unlock_irqrestore(&p->spinlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267 }
Alan Coxa197f692008-02-08 15:27:38 +00001268 dev_kfree_skb(skb);
1269#endif
Patrick McHardyec634fe2009-07-05 19:23:38 -07001270 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271}
1272
1273/*******************************************
1274 * Someone wanna have the statistics
1275 */
1276
1277static struct net_device_stats *ni52_get_stats(struct net_device *dev)
1278{
Wang Chen4cf16532008-11-12 23:38:14 -08001279 struct priv *p = netdev_priv(dev);
Alan Coxa197f692008-02-08 15:27:38 +00001280 unsigned short crc, aln, rsc, ovrn;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281
Alan Coxa197f692008-02-08 15:27:38 +00001282 /* Get error-statistics from the ni82586 */
1283 crc = readw(&p->scb->crc_errs);
1284 writew(0, &p->scb->crc_errs);
1285 aln = readw(&p->scb->aln_errs);
1286 writew(0, &p->scb->aln_errs);
1287 rsc = readw(&p->scb->rsc_errs);
1288 writew(0, &p->scb->rsc_errs);
1289 ovrn = readw(&p->scb->ovrn_errs);
1290 writew(0, &p->scb->ovrn_errs);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291
1292 p->stats.rx_crc_errors += crc;
1293 p->stats.rx_fifo_errors += ovrn;
1294 p->stats.rx_frame_errors += aln;
1295 p->stats.rx_dropped += rsc;
1296
1297 return &p->stats;
1298}
1299
1300/********************************************************
1301 * Set MC list ..
1302 */
1303
1304static void set_multicast_list(struct net_device *dev)
1305{
1306 netif_stop_queue(dev);
1307 ni_disint();
1308 alloc586(dev);
1309 init586(dev);
1310 startrecv586(dev);
1311 ni_enaint();
1312 netif_wake_queue(dev);
1313}
1314
1315#ifdef MODULE
1316static struct net_device *dev_ni52;
1317
1318module_param(io, int, 0);
1319module_param(irq, int, 0);
1320module_param(memstart, long, 0);
1321module_param(memend, long, 0);
1322MODULE_PARM_DESC(io, "NI5210 I/O base address,required");
1323MODULE_PARM_DESC(irq, "NI5210 IRQ number,required");
1324MODULE_PARM_DESC(memstart, "NI5210 memory base address,required");
1325MODULE_PARM_DESC(memend, "NI5210 memory end address,required");
1326
Andrew Morton19a86642006-08-14 23:00:05 -07001327int __init init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328{
Alan Coxa197f692008-02-08 15:27:38 +00001329 if (io <= 0x0 || !memend || !memstart || irq < 2) {
1330 printk(KERN_ERR "ni52: Autoprobing not allowed for modules.\n");
1331 printk(KERN_ERR "ni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332 return -ENODEV;
1333 }
1334 dev_ni52 = ni52_probe(-1);
1335 if (IS_ERR(dev_ni52))
1336 return PTR_ERR(dev_ni52);
1337 return 0;
1338}
1339
Al Viroafc8eb42006-06-14 18:50:53 -04001340void __exit cleanup_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341{
Wang Chen4cf16532008-11-12 23:38:14 -08001342 struct priv *p = netdev_priv(dev_ni52);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001343 unregister_netdev(dev_ni52);
Al Viro176f65f2008-03-19 09:44:29 +00001344 iounmap(p->mapped);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001345 release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE);
1346 free_netdev(dev_ni52);
1347}
1348#endif /* MODULE */
1349
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350MODULE_LICENSE("GPL");