Eric Lee / linux-smarc-t335x-v3.2

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Commit 6c3561b0c1b64c8f0d1419f3909ab29f0eb98906

Authored by Al Viro
Committed by Jeff Garzik
1 parent 865f3b2b6a
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

[PATCH] beginning of 8390 fixes - generic and arm/etherh 

etherh and a handful of other odd drivers use different macros when building
8390.c.  Since we generate a single 8390.o and then link with it, in any
config with both oddball and normal 8390-based driver we will end up with
breakage in at least one of them.  Solution: take most of 8390.c into
lib8390.c and have 8390.c, etherh.c and the rest of oddballs #include it.
Helper macros are taken from 8390.h to whoever includes lib8390.c.  That
way odd drivers get separate instances of compiled 8390 stuff and stop
stepping on each other's toes.  8390.h gets cleaned up - we don't have
the cascade of ifdefs in there and are left with the stuff that can be
used by any 8390-based driver.  Current problems are exactly because of
that cascade - we attempt to choose the set of helpers by looking at config
and that, of course, doesn't work well when we have several sets needed
by various drivers in our config.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Showing 5 changed files with 1135 additions and 1099 deletions Side-by-side Diff

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1   -/* 8390.c: A general NS8390 ethernet driver core for linux. */
2   -/*
3   - Written 1992-94 by Donald Becker.
  1 +/* 8390 core for usual drivers */
4 2  
5   - Copyright 1993 United States Government as represented by the
6   - Director, National Security Agency.
7   -
8   - This software may be used and distributed according to the terms
9   - of the GNU General Public License, incorporated herein by reference.
10   -
11   - The author may be reached as becker@scyld.com, or C/O
12   - Scyld Computing Corporation
13   - 410 Severn Ave., Suite 210
14   - Annapolis MD 21403
15   -
16   -
17   - This is the chip-specific code for many 8390-based ethernet adaptors.
18   - This is not a complete driver, it must be combined with board-specific
19   - code such as ne.c, wd.c, 3c503.c, etc.
20   -
21   - Seeing how at least eight drivers use this code, (not counting the
22   - PCMCIA ones either) it is easy to break some card by what seems like
23   - a simple innocent change. Please contact me or Donald if you think
24   - you have found something that needs changing. -- PG
25   -
26   -
27   - Changelog:
28   -
29   - Paul Gortmaker : remove set_bit lock, other cleanups.
30   - Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
31   - ei_block_input() for eth_io_copy_and_sum().
32   - Paul Gortmaker : exchange static int ei_pingpong for a #define,
33   - also add better Tx error handling.
34   - Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
35   - Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
36   - Paul Gortmaker : tweak ANK's above multicast changes a bit.
37   - Paul Gortmaker : update packet statistics for v2.1.x
38   - Alan Cox : support arbitary stupid port mappings on the
39   - 68K Macintosh. Support >16bit I/O spaces
40   - Paul Gortmaker : add kmod support for auto-loading of the 8390
41   - module by all drivers that require it.
42   - Alan Cox : Spinlocking work, added 'BUG_83C690'
43   - Paul Gortmaker : Separate out Tx timeout code from Tx path.
44   - Paul Gortmaker : Remove old unused single Tx buffer code.
45   - Hayato Fujiwara : Add m32r support.
46   - Paul Gortmaker : use skb_padto() instead of stack scratch area
47   -
48   - Sources:
49   - The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
50   -
51   - */
52   -
53 3 static const char version[] =
54 4 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
55 5  
56   -#include <linux/module.h>
57   -#include <linux/kernel.h>
58   -#include <linux/jiffies.h>
59   -#include <linux/fs.h>
60   -#include <linux/types.h>
61   -#include <linux/string.h>
62   -#include <linux/bitops.h>
63   -#include <asm/system.h>
64   -#include <asm/uaccess.h>
65   -#include <asm/io.h>
66   -#include <asm/irq.h>
67   -#include <linux/delay.h>
68   -#include <linux/errno.h>
69   -#include <linux/fcntl.h>
70   -#include <linux/in.h>
71   -#include <linux/interrupt.h>
72   -#include <linux/init.h>
73   -#include <linux/crc32.h>
  6 +#include "lib8390.c"
74 7  
75   -#include <linux/netdevice.h>
76   -#include <linux/etherdevice.h>
77   -
78   -#define NS8390_CORE
79   -#include "8390.h"
80   -
81   -#define BUG_83C690
82   -
83   -/* These are the operational function interfaces to board-specific
84   - routines.
85   - void reset_8390(struct net_device *dev)
86   - Resets the board associated with DEV, including a hardware reset of
87   - the 8390. This is only called when there is a transmit timeout, and
88   - it is always followed by 8390_init().
89   - void block_output(struct net_device *dev, int count, const unsigned char *buf,
90   - int start_page)
91   - Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
92   - "page" value uses the 8390's 256-byte pages.
93   - void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
94   - Read the 4 byte, page aligned 8390 header. *If* there is a
95   - subsequent read, it will be of the rest of the packet.
96   - void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
97   - Read COUNT bytes from the packet buffer into the skb data area. Start
98   - reading from RING_OFFSET, the address as the 8390 sees it. This will always
99   - follow the read of the 8390 header.
100   -*/
101   -#define ei_reset_8390 (ei_local->reset_8390)
102   -#define ei_block_output (ei_local->block_output)
103   -#define ei_block_input (ei_local->block_input)
104   -#define ei_get_8390_hdr (ei_local->get_8390_hdr)
105   -
106   -/* use 0 for production, 1 for verification, >2 for debug */
107   -#ifndef ei_debug
108   -int ei_debug = 1;
109   -#endif
110   -
111   -/* Index to functions. */
112   -static void ei_tx_intr(struct net_device *dev);
113   -static void ei_tx_err(struct net_device *dev);
114   -static void ei_tx_timeout(struct net_device *dev);
115   -static void ei_receive(struct net_device *dev);
116   -static void ei_rx_overrun(struct net_device *dev);
117   -
118   -/* Routines generic to NS8390-based boards. */
119   -static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
120   - int start_page);
121   -static void set_multicast_list(struct net_device *dev);
122   -static void do_set_multicast_list(struct net_device *dev);
123   -
124   -/*
125   - * SMP and the 8390 setup.
126   - *
127   - * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
128   - * a page register that controls bank and packet buffer access. We guard
129   - * this with ei_local->page_lock. Nobody should assume or set the page other
130   - * than zero when the lock is not held. Lock holders must restore page 0
131   - * before unlocking. Even pure readers must take the lock to protect in
132   - * page 0.
133   - *
134   - * To make life difficult the chip can also be very slow. We therefore can't
135   - * just use spinlocks. For the longer lockups we disable the irq the device
136   - * sits on and hold the lock. We must hold the lock because there is a dual
137   - * processor case other than interrupts (get stats/set multicast list in
138   - * parallel with each other and transmit).
139   - *
140   - * Note: in theory we can just disable the irq on the card _but_ there is
141   - * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
142   - * enter lock, take the queued irq. So we waddle instead of flying.
143   - *
144   - * Finally by special arrangement for the purpose of being generally
145   - * annoying the transmit function is called bh atomic. That places
146   - * restrictions on the user context callers as disable_irq won't save
147   - * them.
148   - */
149   -
150   -
151   -
152   -/**
153   - * ei_open - Open/initialize the board.
154   - * @dev: network device to initialize
155   - *
156   - * This routine goes all-out, setting everything
157   - * up anew at each open, even though many of these registers should only
158   - * need to be set once at boot.
159   - */
160 8 int ei_open(struct net_device *dev)
161 9 {
162   - unsigned long flags;
163   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
164   -
165   - /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
166   - wrapper that does e.g. media check & then calls ei_tx_timeout. */
167   - if (dev->tx_timeout == NULL)
168   - dev->tx_timeout = ei_tx_timeout;
169   - if (dev->watchdog_timeo <= 0)
170   - dev->watchdog_timeo = TX_TIMEOUT;
171   -
172   - /*
173   - * Grab the page lock so we own the register set, then call
174   - * the init function.
175   - */
176   -
177   - spin_lock_irqsave(&ei_local->page_lock, flags);
178   - NS8390_init(dev, 1);
179   - /* Set the flag before we drop the lock, That way the IRQ arrives
180   - after its set and we get no silly warnings */
181   - netif_start_queue(dev);
182   - spin_unlock_irqrestore(&ei_local->page_lock, flags);
183   - ei_local->irqlock = 0;
184   - return 0;
  10 + return __ei_open(dev);
185 11 }
186 12  
187   -/**
188   - * ei_close - shut down network device
189   - * @dev: network device to close
190   - *
191   - * Opposite of ei_open(). Only used when "ifconfig <devname> down" is done.
192   - */
193 13 int ei_close(struct net_device *dev)
194 14 {
195   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
196   - unsigned long flags;
197   -
198   - /*
199   - * Hold the page lock during close
200   - */
201   -
202   - spin_lock_irqsave(&ei_local->page_lock, flags);
203   - NS8390_init(dev, 0);
204   - spin_unlock_irqrestore(&ei_local->page_lock, flags);
205   - netif_stop_queue(dev);
206   - return 0;
  15 + return __ei_close(dev);
207 16 }
208 17  
209   -/**
210   - * ei_tx_timeout - handle transmit time out condition
211   - * @dev: network device which has apparently fallen asleep
212   - *
213   - * Called by kernel when device never acknowledges a transmit has
214   - * completed (or failed) - i.e. never posted a Tx related interrupt.
215   - */
216   -
217   -void ei_tx_timeout(struct net_device *dev)
218   -{
219   - long e8390_base = dev->base_addr;
220   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
221   - int txsr, isr, tickssofar = jiffies - dev->trans_start;
222   - unsigned long flags;
223   -
224   -#if defined(CONFIG_M32R) && defined(CONFIG_SMP)
225   - unsigned long icucr;
226   -
227   - local_irq_save(flags);
228   - icucr = inl(M32R_ICU_CR1_PORTL);
229   - icucr |= M32R_ICUCR_ISMOD11;
230   - outl(icucr, M32R_ICU_CR1_PORTL);
231   - local_irq_restore(flags);
232   -#endif
233   - ei_local->stat.tx_errors++;
234   -
235   - spin_lock_irqsave(&ei_local->page_lock, flags);
236   - txsr = inb(e8390_base+EN0_TSR);
237   - isr = inb(e8390_base+EN0_ISR);
238   - spin_unlock_irqrestore(&ei_local->page_lock, flags);
239   -
240   - printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
241   - dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
242   - (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
243   -
244   - if (!isr && !ei_local->stat.tx_packets)
245   - {
246   - /* The 8390 probably hasn't gotten on the cable yet. */
247   - ei_local->interface_num ^= 1; /* Try a different xcvr. */
248   - }
249   -
250   - /* Ugly but a reset can be slow, yet must be protected */
251   -
252   - disable_irq_nosync_lockdep(dev->irq);
253   - spin_lock(&ei_local->page_lock);
254   -
255   - /* Try to restart the card. Perhaps the user has fixed something. */
256   - ei_reset_8390(dev);
257   - NS8390_init(dev, 1);
258   -
259   - spin_unlock(&ei_local->page_lock);
260   - enable_irq_lockdep(dev->irq);
261   - netif_wake_queue(dev);
262   -}
263   -
264   -/**
265   - * ei_start_xmit - begin packet transmission
266   - * @skb: packet to be sent
267   - * @dev: network device to which packet is sent
268   - *
269   - * Sends a packet to an 8390 network device.
270   - */
271   -
272   -static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
273   -{
274   - long e8390_base = dev->base_addr;
275   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
276   - int send_length = skb->len, output_page;
277   - unsigned long flags;
278   - char buf[ETH_ZLEN];
279   - char *data = skb->data;
280   -
281   - if (skb->len < ETH_ZLEN) {
282   - memset(buf, 0, ETH_ZLEN); /* more efficient than doing just the needed bits */
283   - memcpy(buf, data, skb->len);
284   - send_length = ETH_ZLEN;
285   - data = buf;
286   - }
287   -
288   - /* Mask interrupts from the ethercard.
289   - SMP: We have to grab the lock here otherwise the IRQ handler
290   - on another CPU can flip window and race the IRQ mask set. We end
291   - up trashing the mcast filter not disabling irqs if we don't lock */
292   -
293   - spin_lock_irqsave(&ei_local->page_lock, flags);
294   - outb_p(0x00, e8390_base + EN0_IMR);
295   - spin_unlock_irqrestore(&ei_local->page_lock, flags);
296   -
297   -
298   - /*
299   - * Slow phase with lock held.
300   - */
301   -
302   - disable_irq_nosync_lockdep_irqsave(dev->irq, &flags);
303   -
304   - spin_lock(&ei_local->page_lock);
305   -
306   - ei_local->irqlock = 1;
307   -
308   - /*
309   - * We have two Tx slots available for use. Find the first free
310   - * slot, and then perform some sanity checks. With two Tx bufs,
311   - * you get very close to transmitting back-to-back packets. With
312   - * only one Tx buf, the transmitter sits idle while you reload the
313   - * card, leaving a substantial gap between each transmitted packet.
314   - */
315   -
316   - if (ei_local->tx1 == 0)
317   - {
318   - output_page = ei_local->tx_start_page;
319   - ei_local->tx1 = send_length;
320   - if (ei_debug && ei_local->tx2 > 0)
321   - printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
322   - dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
323   - }
324   - else if (ei_local->tx2 == 0)
325   - {
326   - output_page = ei_local->tx_start_page + TX_PAGES/2;
327   - ei_local->tx2 = send_length;
328   - if (ei_debug && ei_local->tx1 > 0)
329   - printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
330   - dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
331   - }
332   - else
333   - { /* We should never get here. */
334   - if (ei_debug)
335   - printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
336   - dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
337   - ei_local->irqlock = 0;
338   - netif_stop_queue(dev);
339   - outb_p(ENISR_ALL, e8390_base + EN0_IMR);
340   - spin_unlock(&ei_local->page_lock);
341   - enable_irq_lockdep_irqrestore(dev->irq, &flags);
342   - ei_local->stat.tx_errors++;
343   - return 1;
344   - }
345   -
346   - /*
347   - * Okay, now upload the packet and trigger a send if the transmitter
348   - * isn't already sending. If it is busy, the interrupt handler will
349   - * trigger the send later, upon receiving a Tx done interrupt.
350   - */
351   -
352   - ei_block_output(dev, send_length, data, output_page);
353   -
354   - if (! ei_local->txing)
355   - {
356   - ei_local->txing = 1;
357   - NS8390_trigger_send(dev, send_length, output_page);
358   - dev->trans_start = jiffies;
359   - if (output_page == ei_local->tx_start_page)
360   - {
361   - ei_local->tx1 = -1;
362   - ei_local->lasttx = -1;
363   - }
364   - else
365   - {
366   - ei_local->tx2 = -1;
367   - ei_local->lasttx = -2;
368   - }
369   - }
370   - else ei_local->txqueue++;
371   -
372   - if (ei_local->tx1 && ei_local->tx2)
373   - netif_stop_queue(dev);
374   - else
375   - netif_start_queue(dev);
376   -
377   - /* Turn 8390 interrupts back on. */
378   - ei_local->irqlock = 0;
379   - outb_p(ENISR_ALL, e8390_base + EN0_IMR);
380   -
381   - spin_unlock(&ei_local->page_lock);
382   - enable_irq_lockdep_irqrestore(dev->irq, &flags);
383   -
384   - dev_kfree_skb (skb);
385   - ei_local->stat.tx_bytes += send_length;
386   -
387   - return 0;
388   -}
389   -
390   -/**
391   - * ei_interrupt - handle the interrupts from an 8390
392   - * @irq: interrupt number
393   - * @dev_id: a pointer to the net_device
394   - *
395   - * Handle the ether interface interrupts. We pull packets from
396   - * the 8390 via the card specific functions and fire them at the networking
397   - * stack. We also handle transmit completions and wake the transmit path if
398   - * necessary. We also update the counters and do other housekeeping as
399   - * needed.
400   - */
401   -
402 18 irqreturn_t ei_interrupt(int irq, void *dev_id)
403 19 {
404   - struct net_device *dev = dev_id;
405   - long e8390_base;
406   - int interrupts, nr_serviced = 0;
407   - struct ei_device *ei_local;
408   -
409   - e8390_base = dev->base_addr;
410   - ei_local = netdev_priv(dev);
411   -
412   - /*
413   - * Protect the irq test too.
414   - */
415   -
416   - spin_lock(&ei_local->page_lock);
417   -
418   - if (ei_local->irqlock)
419   - {
420   -#if 1 /* This might just be an interrupt for a PCI device sharing this line */
421   - /* The "irqlock" check is only for testing. */
422   - printk(ei_local->irqlock
423   - ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
424   - : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
425   - dev->name, inb_p(e8390_base + EN0_ISR),
426   - inb_p(e8390_base + EN0_IMR));
427   -#endif
428   - spin_unlock(&ei_local->page_lock);
429   - return IRQ_NONE;
430   - }
431   -
432   - /* Change to page 0 and read the intr status reg. */
433   - outb_p(E8390_NODMA+E8390_PAGE0, e8390_base + E8390_CMD);
434   - if (ei_debug > 3)
435   - printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
436   - inb_p(e8390_base + EN0_ISR));
437   -
438   - /* !!Assumption!! -- we stay in page 0. Don't break this. */
439   - while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
440   - && ++nr_serviced < MAX_SERVICE)
441   - {
442   - if (!netif_running(dev)) {
443   - printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
444   - /* rmk - acknowledge the interrupts */
445   - outb_p(interrupts, e8390_base + EN0_ISR);
446   - interrupts = 0;
447   - break;
448   - }
449   - if (interrupts & ENISR_OVER)
450   - ei_rx_overrun(dev);
451   - else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
452   - {
453   - /* Got a good (?) packet. */
454   - ei_receive(dev);
455   - }
456   - /* Push the next to-transmit packet through. */
457   - if (interrupts & ENISR_TX)
458   - ei_tx_intr(dev);
459   - else if (interrupts & ENISR_TX_ERR)
460   - ei_tx_err(dev);
461   -
462   - if (interrupts & ENISR_COUNTERS)
463   - {
464   - ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
465   - ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
466   - ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
467   - outb_p(ENISR_COUNTERS, e8390_base + EN0_ISR); /* Ack intr. */
468   - }
469   -
470   - /* Ignore any RDC interrupts that make it back to here. */
471   - if (interrupts & ENISR_RDC)
472   - {
473   - outb_p(ENISR_RDC, e8390_base + EN0_ISR);
474   - }
475   -
476   - outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base + E8390_CMD);
477   - }
478   -
479   - if (interrupts && ei_debug)
480   - {
481   - outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base + E8390_CMD);
482   - if (nr_serviced >= MAX_SERVICE)
483   - {
484   - /* 0xFF is valid for a card removal */
485   - if(interrupts!=0xFF)
486   - printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
487   - dev->name, interrupts);
488   - outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
489   - } else {
490   - printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
491   - outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
492   - }
493   - }
494   - spin_unlock(&ei_local->page_lock);
495   - return IRQ_RETVAL(nr_serviced > 0);
  20 + return __ei_interrupt(irq, dev_id);
496 21 }
497 22  
498 23 #ifdef CONFIG_NET_POLL_CONTROLLER
499 24 void ei_poll(struct net_device *dev)
500 25 {
501   - disable_irq_lockdep(dev->irq);
502   - ei_interrupt(dev->irq, dev);
503   - enable_irq_lockdep(dev->irq);
  26 + __ei_poll(dev);
504 27 }
505 28 #endif
506 29  
507   -/**
508   - * ei_tx_err - handle transmitter error
509   - * @dev: network device which threw the exception
510   - *
511   - * A transmitter error has happened. Most likely excess collisions (which
512   - * is a fairly normal condition). If the error is one where the Tx will
513   - * have been aborted, we try and send another one right away, instead of
514   - * letting the failed packet sit and collect dust in the Tx buffer. This
515   - * is a much better solution as it avoids kernel based Tx timeouts, and
516   - * an unnecessary card reset.
517   - *
518   - * Called with lock held.
519   - */
520   -
521   -static void ei_tx_err(struct net_device *dev)
522   -{
523   - long e8390_base = dev->base_addr;
524   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
525   - unsigned char txsr = inb_p(e8390_base+EN0_TSR);
526   - unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
527   -
528   -#ifdef VERBOSE_ERROR_DUMP
529   - printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
530   - if (txsr & ENTSR_ABT)
531   - printk("excess-collisions ");
532   - if (txsr & ENTSR_ND)
533   - printk("non-deferral ");
534   - if (txsr & ENTSR_CRS)
535   - printk("lost-carrier ");
536   - if (txsr & ENTSR_FU)
537   - printk("FIFO-underrun ");
538   - if (txsr & ENTSR_CDH)
539   - printk("lost-heartbeat ");
540   - printk("\n");
541   -#endif
542   -
543   - outb_p(ENISR_TX_ERR, e8390_base + EN0_ISR); /* Ack intr. */
544   -
545   - if (tx_was_aborted)
546   - ei_tx_intr(dev);
547   - else
548   - {
549   - ei_local->stat.tx_errors++;
550   - if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
551   - if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
552   - if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
553   - }
554   -}
555   -
556   -/**
557   - * ei_tx_intr - transmit interrupt handler
558   - * @dev: network device for which tx intr is handled
559   - *
560   - * We have finished a transmit: check for errors and then trigger the next
561   - * packet to be sent. Called with lock held.
562   - */
563   -
564   -static void ei_tx_intr(struct net_device *dev)
565   -{
566   - long e8390_base = dev->base_addr;
567   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
568   - int status = inb(e8390_base + EN0_TSR);
569   -
570   - outb_p(ENISR_TX, e8390_base + EN0_ISR); /* Ack intr. */
571   -
572   - /*
573   - * There are two Tx buffers, see which one finished, and trigger
574   - * the send of another one if it exists.
575   - */
576   - ei_local->txqueue--;
577   -
578   - if (ei_local->tx1 < 0)
579   - {
580   - if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
581   - printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
582   - ei_local->name, ei_local->lasttx, ei_local->tx1);
583   - ei_local->tx1 = 0;
584   - if (ei_local->tx2 > 0)
585   - {
586   - ei_local->txing = 1;
587   - NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
588   - dev->trans_start = jiffies;
589   - ei_local->tx2 = -1,
590   - ei_local->lasttx = 2;
591   - }
592   - else ei_local->lasttx = 20, ei_local->txing = 0;
593   - }
594   - else if (ei_local->tx2 < 0)
595   - {
596   - if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
597   - printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
598   - ei_local->name, ei_local->lasttx, ei_local->tx2);
599   - ei_local->tx2 = 0;
600   - if (ei_local->tx1 > 0)
601   - {
602   - ei_local->txing = 1;
603   - NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
604   - dev->trans_start = jiffies;
605   - ei_local->tx1 = -1;
606   - ei_local->lasttx = 1;
607   - }
608   - else
609   - ei_local->lasttx = 10, ei_local->txing = 0;
610   - }
611   -// else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
612   -// dev->name, ei_local->lasttx);
613   -
614   - /* Minimize Tx latency: update the statistics after we restart TXing. */
615   - if (status & ENTSR_COL)
616   - ei_local->stat.collisions++;
617   - if (status & ENTSR_PTX)
618   - ei_local->stat.tx_packets++;
619   - else
620   - {
621   - ei_local->stat.tx_errors++;
622   - if (status & ENTSR_ABT)
623   - {
624   - ei_local->stat.tx_aborted_errors++;
625   - ei_local->stat.collisions += 16;
626   - }
627   - if (status & ENTSR_CRS)
628   - ei_local->stat.tx_carrier_errors++;
629   - if (status & ENTSR_FU)
630   - ei_local->stat.tx_fifo_errors++;
631   - if (status & ENTSR_CDH)
632   - ei_local->stat.tx_heartbeat_errors++;
633   - if (status & ENTSR_OWC)
634   - ei_local->stat.tx_window_errors++;
635   - }
636   - netif_wake_queue(dev);
637   -}
638   -
639   -/**
640   - * ei_receive - receive some packets
641   - * @dev: network device with which receive will be run
642   - *
643   - * We have a good packet(s), get it/them out of the buffers.
644   - * Called with lock held.
645   - */
646   -
647   -static void ei_receive(struct net_device *dev)
648   -{
649   - long e8390_base = dev->base_addr;
650   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
651   - unsigned char rxing_page, this_frame, next_frame;
652   - unsigned short current_offset;
653   - int rx_pkt_count = 0;
654   - struct e8390_pkt_hdr rx_frame;
655   - int num_rx_pages = ei_local->stop_page-ei_local->rx_start_page;
656   -
657   - while (++rx_pkt_count < 10)
658   - {
659   - int pkt_len, pkt_stat;
660   -
661   - /* Get the rx page (incoming packet pointer). */
662   - outb_p(E8390_NODMA+E8390_PAGE1, e8390_base + E8390_CMD);
663   - rxing_page = inb_p(e8390_base + EN1_CURPAG);
664   - outb_p(E8390_NODMA+E8390_PAGE0, e8390_base + E8390_CMD);
665   -
666   - /* Remove one frame from the ring. Boundary is always a page behind. */
667   - this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
668   - if (this_frame >= ei_local->stop_page)
669   - this_frame = ei_local->rx_start_page;
670   -
671   - /* Someday we'll omit the previous, iff we never get this message.
672   - (There is at least one clone claimed to have a problem.)
673   -
674   - Keep quiet if it looks like a card removal. One problem here
675   - is that some clones crash in roughly the same way.
676   - */
677   - if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
678   - printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
679   - dev->name, this_frame, ei_local->current_page);
680   -
681   - if (this_frame == rxing_page) /* Read all the frames? */
682   - break; /* Done for now */
683   -
684   - current_offset = this_frame << 8;
685   - ei_get_8390_hdr(dev, &rx_frame, this_frame);
686   -
687   - pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
688   - pkt_stat = rx_frame.status;
689   -
690   - next_frame = this_frame + 1 + ((pkt_len+4)>>8);
691   -
692   - /* Check for bogosity warned by 3c503 book: the status byte is never
693   - written. This happened a lot during testing! This code should be
694   - cleaned up someday. */
695   - if (rx_frame.next != next_frame
696   - && rx_frame.next != next_frame + 1
697   - && rx_frame.next != next_frame - num_rx_pages
698   - && rx_frame.next != next_frame + 1 - num_rx_pages) {
699   - ei_local->current_page = rxing_page;
700   - outb(ei_local->current_page-1, e8390_base+EN0_BOUNDARY);
701   - ei_local->stat.rx_errors++;
702   - continue;
703   - }
704   -
705   - if (pkt_len < 60 || pkt_len > 1518)
706   - {
707   - if (ei_debug)
708   - printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
709   - dev->name, rx_frame.count, rx_frame.status,
710   - rx_frame.next);
711   - ei_local->stat.rx_errors++;
712   - ei_local->stat.rx_length_errors++;
713   - }
714   - else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
715   - {
716   - struct sk_buff *skb;
717   -
718   - skb = dev_alloc_skb(pkt_len+2);
719   - if (skb == NULL)
720   - {
721   - if (ei_debug > 1)
722   - printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
723   - dev->name, pkt_len);
724   - ei_local->stat.rx_dropped++;
725   - break;
726   - }
727   - else
728   - {
729   - skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
730   - skb->dev = dev;
731   - skb_put(skb, pkt_len); /* Make room */
732   - ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
733   - skb->protocol=eth_type_trans(skb,dev);
734   - netif_rx(skb);
735   - dev->last_rx = jiffies;
736   - ei_local->stat.rx_packets++;
737   - ei_local->stat.rx_bytes += pkt_len;
738   - if (pkt_stat & ENRSR_PHY)
739   - ei_local->stat.multicast++;
740   - }
741   - }
742   - else
743   - {
744   - if (ei_debug)
745   - printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
746   - dev->name, rx_frame.status, rx_frame.next,
747   - rx_frame.count);
748   - ei_local->stat.rx_errors++;
749   - /* NB: The NIC counts CRC, frame and missed errors. */
750   - if (pkt_stat & ENRSR_FO)
751   - ei_local->stat.rx_fifo_errors++;
752   - }
753   - next_frame = rx_frame.next;
754   -
755   - /* This _should_ never happen: it's here for avoiding bad clones. */
756   - if (next_frame >= ei_local->stop_page) {
757   - printk("%s: next frame inconsistency, %#2x\n", dev->name,
758   - next_frame);
759   - next_frame = ei_local->rx_start_page;
760   - }
761   - ei_local->current_page = next_frame;
762   - outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
763   - }
764   -
765   - /* We used to also ack ENISR_OVER here, but that would sometimes mask
766   - a real overrun, leaving the 8390 in a stopped state with rec'vr off. */
767   - outb_p(ENISR_RX+ENISR_RX_ERR, e8390_base+EN0_ISR);
768   - return;
769   -}
770   -
771   -/**
772   - * ei_rx_overrun - handle receiver overrun
773   - * @dev: network device which threw exception
774   - *
775   - * We have a receiver overrun: we have to kick the 8390 to get it started
776   - * again. Problem is that you have to kick it exactly as NS prescribes in
777   - * the updated datasheets, or "the NIC may act in an unpredictable manner."
778   - * This includes causing "the NIC to defer indefinitely when it is stopped
779   - * on a busy network." Ugh.
780   - * Called with lock held. Don't call this with the interrupts off or your
781   - * computer will hate you - it takes 10ms or so.
782   - */
783   -
784   -static void ei_rx_overrun(struct net_device *dev)
785   -{
786   - long e8390_base = dev->base_addr;
787   - unsigned char was_txing, must_resend = 0;
788   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
789   -
790   - /*
791   - * Record whether a Tx was in progress and then issue the
792   - * stop command.
793   - */
794   - was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
795   - outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
796   -
797   - if (ei_debug > 1)
798   - printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
799   - ei_local->stat.rx_over_errors++;
800   -
801   - /*
802   - * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
803   - * Early datasheets said to poll the reset bit, but now they say that
804   - * it "is not a reliable indicator and subsequently should be ignored."
805   - * We wait at least 10ms.
806   - */
807   -
808   - mdelay(10);
809   -
810   - /*
811   - * Reset RBCR[01] back to zero as per magic incantation.
812   - */
813   - outb_p(0x00, e8390_base+EN0_RCNTLO);
814   - outb_p(0x00, e8390_base+EN0_RCNTHI);
815   -
816   - /*
817   - * See if any Tx was interrupted or not. According to NS, this
818   - * step is vital, and skipping it will cause no end of havoc.
819   - */
820   -
821   - if (was_txing)
822   - {
823   - unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
824   - if (!tx_completed)
825   - must_resend = 1;
826   - }
827   -
828   - /*
829   - * Have to enter loopback mode and then restart the NIC before
830   - * you are allowed to slurp packets up off the ring.
831   - */
832   - outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
833   - outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
834   -
835   - /*
836   - * Clear the Rx ring of all the debris, and ack the interrupt.
837   - */
838   - ei_receive(dev);
839   - outb_p(ENISR_OVER, e8390_base+EN0_ISR);
840   -
841   - /*
842   - * Leave loopback mode, and resend any packet that got stopped.
843   - */
844   - outb_p(E8390_TXCONFIG, e8390_base + EN0_TXCR);
845   - if (must_resend)
846   - outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
847   -}
848   -
849   -/*
850   - * Collect the stats. This is called unlocked and from several contexts.
851   - */
852   -
853   -static struct net_device_stats *get_stats(struct net_device *dev)
854   -{
855   - long ioaddr = dev->base_addr;
856   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
857   - unsigned long flags;
858   -
859   - /* If the card is stopped, just return the present stats. */
860   - if (!netif_running(dev))
861   - return &ei_local->stat;
862   -
863   - spin_lock_irqsave(&ei_local->page_lock,flags);
864   - /* Read the counter registers, assuming we are in page 0. */
865   - ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
866   - ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
867   - ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
868   - spin_unlock_irqrestore(&ei_local->page_lock, flags);
869   -
870   - return &ei_local->stat;
871   -}
872   -
873   -/*
874   - * Form the 64 bit 8390 multicast table from the linked list of addresses
875   - * associated with this dev structure.
876   - */
877   -
878   -static inline void make_mc_bits(u8 *bits, struct net_device *dev)
879   -{
880   - struct dev_mc_list *dmi;
881   -
882   - for (dmi=dev->mc_list; dmi; dmi=dmi->next)
883   - {
884   - u32 crc;
885   - if (dmi->dmi_addrlen != ETH_ALEN)
886   - {
887   - printk(KERN_INFO "%s: invalid multicast address length given.\n", dev->name);
888   - continue;
889   - }
890   - crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
891   - /*
892   - * The 8390 uses the 6 most significant bits of the
893   - * CRC to index the multicast table.
894   - */
895   - bits[crc>>29] |= (1<<((crc>>26)&7));
896   - }
897   -}
898   -
899   -/**
900   - * do_set_multicast_list - set/clear multicast filter
901   - * @dev: net device for which multicast filter is adjusted
902   - *
903   - * Set or clear the multicast filter for this adaptor. May be called
904   - * from a BH in 2.1.x. Must be called with lock held.
905   - */
906   -
907   -static void do_set_multicast_list(struct net_device *dev)
908   -{
909   - long e8390_base = dev->base_addr;
910   - int i;
911   - struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
912   -
913   - if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI)))
914   - {
915   - memset(ei_local->mcfilter, 0, 8);
916   - if (dev->mc_list)
917   - make_mc_bits(ei_local->mcfilter, dev);
918   - }
919   - else
920   - memset(ei_local->mcfilter, 0xFF, 8); /* mcast set to accept-all */
921   -
922   - /*
923   - * DP8390 manuals don't specify any magic sequence for altering
924   - * the multicast regs on an already running card. To be safe, we
925   - * ensure multicast mode is off prior to loading up the new hash
926   - * table. If this proves to be not enough, we can always resort
927   - * to stopping the NIC, loading the table and then restarting.
928   - *
929   - * Bug Alert! The MC regs on the SMC 83C690 (SMC Elite and SMC
930   - * Elite16) appear to be write-only. The NS 8390 data sheet lists
931   - * them as r/w so this is a bug. The SMC 83C790 (SMC Ultra and
932   - * Ultra32 EISA) appears to have this bug fixed.
933   - */
934   -
935   - if (netif_running(dev))
936   - outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
937   - outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
938   - for(i = 0; i < 8; i++)
939   - {
940   - outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
941   -#ifndef BUG_83C690
942   - if(inb_p(e8390_base + EN1_MULT_SHIFT(i))!=ei_local->mcfilter[i])
943   - printk(KERN_ERR "Multicast filter read/write mismap %d\n",i);
944   -#endif
945   - }
946   - outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
947   -
948   - if(dev->flags&IFF_PROMISC)
949   - outb_p(E8390_RXCONFIG | 0x18, e8390_base + EN0_RXCR);
950   - else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
951   - outb_p(E8390_RXCONFIG | 0x08, e8390_base + EN0_RXCR);
952   - else
953   - outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
954   - }
955   -
956   -/*
957   - * Called without lock held. This is invoked from user context and may
958   - * be parallel to just about everything else. Its also fairly quick and
959   - * not called too often. Must protect against both bh and irq users
960   - */
961   -
962   -static void set_multicast_list(struct net_device *dev)
963   -{
964   - unsigned long flags;
965   - struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
966   -
967   - spin_lock_irqsave(&ei_local->page_lock, flags);
968   - do_set_multicast_list(dev);
969   - spin_unlock_irqrestore(&ei_local->page_lock, flags);
970   -}
971   -
972   -/**
973   - * ethdev_setup - init rest of 8390 device struct
974   - * @dev: network device structure to init
975   - *
976   - * Initialize the rest of the 8390 device structure. Do NOT __init
977   - * this, as it is used by 8390 based modular drivers too.
978   - */
979   -
980   -static void ethdev_setup(struct net_device *dev)
981   -{
982   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
983   - if (ei_debug > 1)
984   - printk(version);
985   -
986   - dev->hard_start_xmit = &ei_start_xmit;
987   - dev->get_stats = get_stats;
988   - dev->set_multicast_list = &set_multicast_list;
989   -
990   - ether_setup(dev);
991   -
992   - spin_lock_init(&ei_local->page_lock);
993   -}
994   -
995   -/**
996   - * alloc_ei_netdev - alloc_etherdev counterpart for 8390
997   - * @size: extra bytes to allocate
998   - *
999   - * Allocate 8390-specific net_device.
1000   - */
1001 30 struct net_device *__alloc_ei_netdev(int size)
1002 31 {
1003   - return alloc_netdev(sizeof(struct ei_device) + size, "eth%d",
1004   - ethdev_setup);
  32 + return ____alloc_ei_netdev(size);
1005 33 }
1006 34  
1007   -
1008   -
1009   -
1010   -/* This page of functions should be 8390 generic */
1011   -/* Follow National Semi's recommendations for initializing the "NIC". */
1012   -
1013   -/**
1014   - * NS8390_init - initialize 8390 hardware
1015   - * @dev: network device to initialize
1016   - * @startp: boolean. non-zero value to initiate chip processing
1017   - *
1018   - * Must be called with lock held.
1019   - */
1020   -
1021 35 void NS8390_init(struct net_device *dev, int startp)
1022 36 {
1023   - long e8390_base = dev->base_addr;
1024   - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1025   - int i;
1026   - int endcfg = ei_local->word16
1027   - ? (0x48 | ENDCFG_WTS | (ei_local->bigendian ? ENDCFG_BOS : 0))
1028   - : 0x48;
1029   -
1030   - if(sizeof(struct e8390_pkt_hdr)!=4)
1031   - panic("8390.c: header struct mispacked\n");
1032   - /* Follow National Semi's recommendations for initing the DP83902. */
1033   - outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1034   - outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1035   - /* Clear the remote byte count registers. */
1036   - outb_p(0x00, e8390_base + EN0_RCNTLO);
1037   - outb_p(0x00, e8390_base + EN0_RCNTHI);
1038   - /* Set to monitor and loopback mode -- this is vital!. */
1039   - outb_p(E8390_RXOFF, e8390_base + EN0_RXCR); /* 0x20 */
1040   - outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1041   - /* Set the transmit page and receive ring. */
1042   - outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1043   - ei_local->tx1 = ei_local->tx2 = 0;
1044   - outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1045   - outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1046   - ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1047   - outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1048   - /* Clear the pending interrupts and mask. */
1049   - outb_p(0xFF, e8390_base + EN0_ISR);
1050   - outb_p(0x00, e8390_base + EN0_IMR);
1051   -
1052   - /* Copy the station address into the DS8390 registers. */
1053   -
1054   - outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1055   - for(i = 0; i < 6; i++)
1056   - {
1057   - outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1058   - if (ei_debug > 1 && inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1059   - printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1060   - }
1061   -
1062   - outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1063   - outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1064   -
1065   - netif_start_queue(dev);
1066   - ei_local->tx1 = ei_local->tx2 = 0;
1067   - ei_local->txing = 0;
1068   -
1069   - if (startp)
1070   - {
1071   - outb_p(0xff, e8390_base + EN0_ISR);
1072   - outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1073   - outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1074   - outb_p(E8390_TXCONFIG, e8390_base + EN0_TXCR); /* xmit on. */
1075   - /* 3c503 TechMan says rxconfig only after the NIC is started. */
1076   - outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR); /* rx on, */
1077   - do_set_multicast_list(dev); /* (re)load the mcast table */
1078   - }
1079   -}
1080   -
1081   -/* Trigger a transmit start, assuming the length is valid.
1082   - Always called with the page lock held */
1083   -
1084   -static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1085   - int start_page)
1086   -{
1087   - long e8390_base = dev->base_addr;
1088   - struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1089   -
1090   - outb_p(E8390_NODMA+E8390_PAGE0, e8390_base+E8390_CMD);
1091   -
1092   - if (inb_p(e8390_base + E8390_CMD) & E8390_TRANS)
1093   - {
1094   - printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1095   - dev->name);
1096   - return;
1097   - }
1098   - outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1099   - outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1100   - outb_p(start_page, e8390_base + EN0_TPSR);
1101   - outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);
  37 + return __NS8390_init(dev, startp);
1102 38 }
1103 39  
1104 40 EXPORT_SYMBOL(ei_open);
... ... @@ -116,26 +116,23 @@
116 116 #undef outb
117 117 #undef outb_p
118 118  
119   -#define inb(port) in_8(port)
120   -#define outb(val,port) out_8(port,val)
121   -#define inb_p(port) in_8(port)
122   -#define outb_p(val,port) out_8(port,val)
  119 +#define ei_inb(port) in_8(port)
  120 +#define ei_outb(val,port) out_8(port,val)
  121 +#define ei_inb_p(port) in_8(port)
  122 +#define ei_outb_p(val,port) out_8(port,val)
123 123  
124   -#elif defined(CONFIG_ARM_ETHERH) || defined(CONFIG_ARM_ETHERH_MODULE)
  124 +#elif defined(CONFIG_NE_H8300) || defined(CONFIG_NE_H8300_MODULE)
125 125 #define EI_SHIFT(x) (ei_local->reg_offset[x])
126   -#undef inb
127   -#undef inb_p
128   -#undef outb
129   -#undef outb_p
  126 +#endif
130 127  
131   -#define inb(_p) readb(_p)
132   -#define outb(_v,_p) writeb(_v,_p)
133   -#define inb_p(_p) inb(_p)
134   -#define outb_p(_v,_p) outb(_v,_p)
  128 +#ifndef ei_inb
  129 +#define ei_inb(_p) inb(_p)
  130 +#define ei_outb(_v,_p) outb(_v,_p)
  131 +#define ei_inb_p(_p) inb_p(_p)
  132 +#define ei_outb_p(_v,_p) outb_p(_v,_p)
  133 +#endif
135 134  
136   -#elif defined(CONFIG_NE_H8300) || defined(CONFIG_NE_H8300_MODULE)
137   -#define EI_SHIFT(x) (ei_local->reg_offset[x])
138   -#else
  135 +#ifndef EI_SHIFT
139 136 #define EI_SHIFT(x) (x)
140 137 #endif
141 138  
drivers/net/Makefile
Diff comments   View file @ 6c3561b
... ... @@ -90,7 +90,6 @@
90 90 obj-$(CONFIG_SMC9194) += smc9194.o
91 91 obj-$(CONFIG_FEC) += fec.o
92 92 obj-$(CONFIG_68360_ENET) += 68360enet.o
93   -obj-$(CONFIG_ARM_ETHERH) += 8390.o
94 93 obj-$(CONFIG_WD80x3) += wd.o 8390.o
95 94 obj-$(CONFIG_EL2) += 3c503.o 8390.o
96 95 obj-$(CONFIG_NE2000) += ne.o 8390.o
drivers/net/arm/etherh.c
Diff comments   View file @ 6c3561b
... ... @@ -52,14 +52,24 @@
52 52 #include <asm/ecard.h>
53 53 #include <asm/io.h>
54 54  
55   -#include "../8390.h"
  55 +#define EI_SHIFT(x) (ei_local->reg_offset[x])
56 56  
  57 +#define ei_inb(_p) readb(_p)
  58 +#define ei_outb(_v,_p) writeb(_v,_p)
  59 +#define ei_inb_p(_p) readb(_p)
  60 +#define ei_outb_p(_v,_p) writeb(_v,_p)
  61 +
57 62 #define NET_DEBUG 0
58 63 #define DEBUG_INIT 2
59 64  
60 65 #define DRV_NAME "etherh"
61 66 #define DRV_VERSION "1.11"
62 67  
  68 +static char version[] __initdata =
  69 + "EtherH/EtherM Driver (c) 2002-2004 Russell King " DRV_VERSION "\n";
  70 +
  71 +#include "../lib8390.c"
  72 +
63 73 static unsigned int net_debug = NET_DEBUG;
64 74  
65 75 struct etherh_priv {
... ... @@ -87,9 +97,6 @@
87 97 MODULE_DESCRIPTION("EtherH/EtherM driver");
88 98 MODULE_LICENSE("GPL");
89 99  
90   -static char version[] __initdata =
91   - "EtherH/EtherM Driver (c) 2002-2004 Russell King " DRV_VERSION "\n";
92   -
93 100 #define ETHERH500_DATAPORT 0x800 /* MEMC */
94 101 #define ETHERH500_NS8390 0x000 /* MEMC */
95 102 #define ETHERH500_CTRLPORT 0x800 /* IOC */
... ... @@ -360,7 +367,7 @@
360 367 printk(KERN_ERR "%s: timeout waiting for TX RDC\n",
361 368 dev->name);
362 369 etherh_reset (dev);
363   - NS8390_init (dev, 1);
  370 + __NS8390_init (dev, 1);
364 371 break;
365 372 }
366 373  
... ... @@ -465,7 +472,7 @@
465 472 return -EINVAL;
466 473 }
467 474  
468   - if (request_irq(dev->irq, ei_interrupt, 0, dev->name, dev))
  475 + if (request_irq(dev->irq, __ei_interrupt, 0, dev->name, dev))
469 476 return -EAGAIN;
470 477  
471 478 /*
... ... @@ -491,7 +498,7 @@
491 498 etherh_setif(dev);
492 499  
493 500 etherh_reset(dev);
494   - ei_open(dev);
  501 + __ei_open(dev);
495 502  
496 503 return 0;
497 504 }
... ... @@ -502,7 +509,7 @@
502 509 static int
503 510 etherh_close(struct net_device *dev)
504 511 {
505   - ei_close (dev);
  512 + __ei_close (dev);
506 513 free_irq (dev->irq, dev);
507 514 return 0;
508 515 }
... ... @@ -650,7 +657,7 @@
650 657 if (ret)
651 658 goto out;
652 659  
653   - dev = __alloc_ei_netdev(sizeof(struct etherh_priv));
  660 + dev = ____alloc_ei_netdev(sizeof(struct etherh_priv));
654 661 if (!dev) {
655 662 ret = -ENOMEM;
656 663 goto release;
... ... @@ -736,7 +743,7 @@
736 743 ei_local->interface_num = 0;
737 744  
738 745 etherh_reset(dev);
739   - NS8390_init(dev, 0);
  746 + __NS8390_init(dev, 0);
740 747  
741 748 ret = register_netdev(dev);
742 749 if (ret)
drivers/net/lib8390.c
Diff comments   View file @ 6c3561b
Changes suppressed. Click to show
  1 +/* 8390.c: A general NS8390 ethernet driver core for linux. */
  2 +/*
  3 + Written 1992-94 by Donald Becker.
  4 +
  5 + Copyright 1993 United States Government as represented by the
  6 + Director, National Security Agency.
  7 +
  8 + This software may be used and distributed according to the terms
  9 + of the GNU General Public License, incorporated herein by reference.
  10 +
  11 + The author may be reached as becker@scyld.com, or C/O
  12 + Scyld Computing Corporation
  13 + 410 Severn Ave., Suite 210
  14 + Annapolis MD 21403
  15 +
  16 +
  17 + This is the chip-specific code for many 8390-based ethernet adaptors.
  18 + This is not a complete driver, it must be combined with board-specific
  19 + code such as ne.c, wd.c, 3c503.c, etc.
  20 +
  21 + Seeing how at least eight drivers use this code, (not counting the
  22 + PCMCIA ones either) it is easy to break some card by what seems like
  23 + a simple innocent change. Please contact me or Donald if you think
  24 + you have found something that needs changing. -- PG
  25 +
  26 +
  27 + Changelog:
  28 +
  29 + Paul Gortmaker : remove set_bit lock, other cleanups.
  30 + Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
  31 + ei_block_input() for eth_io_copy_and_sum().
  32 + Paul Gortmaker : exchange static int ei_pingpong for a #define,
  33 + also add better Tx error handling.
  34 + Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
  35 + Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
  36 + Paul Gortmaker : tweak ANK's above multicast changes a bit.
  37 + Paul Gortmaker : update packet statistics for v2.1.x
  38 + Alan Cox : support arbitary stupid port mappings on the
  39 + 68K Macintosh. Support >16bit I/O spaces
  40 + Paul Gortmaker : add kmod support for auto-loading of the 8390
  41 + module by all drivers that require it.
  42 + Alan Cox : Spinlocking work, added 'BUG_83C690'
  43 + Paul Gortmaker : Separate out Tx timeout code from Tx path.
  44 + Paul Gortmaker : Remove old unused single Tx buffer code.
  45 + Hayato Fujiwara : Add m32r support.
  46 + Paul Gortmaker : use skb_padto() instead of stack scratch area
  47 +
  48 + Sources:
  49 + The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
  50 +
  51 + */
  52 +
  53 +#include <linux/module.h>
  54 +#include <linux/kernel.h>
  55 +#include <linux/jiffies.h>
  56 +#include <linux/fs.h>
  57 +#include <linux/types.h>
  58 +#include <linux/string.h>
  59 +#include <linux/bitops.h>
  60 +#include <asm/system.h>
  61 +#include <asm/uaccess.h>
  62 +#include <asm/io.h>
  63 +#include <asm/irq.h>
  64 +#include <linux/delay.h>
  65 +#include <linux/errno.h>
  66 +#include <linux/fcntl.h>
  67 +#include <linux/in.h>
  68 +#include <linux/interrupt.h>
  69 +#include <linux/init.h>
  70 +#include <linux/crc32.h>
  71 +
  72 +#include <linux/netdevice.h>
  73 +#include <linux/etherdevice.h>
  74 +
  75 +#define NS8390_CORE
  76 +#include "8390.h"
  77 +
  78 +#define BUG_83C690
  79 +
  80 +/* These are the operational function interfaces to board-specific
  81 + routines.
  82 + void reset_8390(struct net_device *dev)
  83 + Resets the board associated with DEV, including a hardware reset of
  84 + the 8390. This is only called when there is a transmit timeout, and
  85 + it is always followed by 8390_init().
  86 + void block_output(struct net_device *dev, int count, const unsigned char *buf,
  87 + int start_page)
  88 + Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
  89 + "page" value uses the 8390's 256-byte pages.
  90 + void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
  91 + Read the 4 byte, page aligned 8390 header. *If* there is a
  92 + subsequent read, it will be of the rest of the packet.
  93 + void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
  94 + Read COUNT bytes from the packet buffer into the skb data area. Start
  95 + reading from RING_OFFSET, the address as the 8390 sees it. This will always
  96 + follow the read of the 8390 header.
  97 +*/
  98 +#define ei_reset_8390 (ei_local->reset_8390)
  99 +#define ei_block_output (ei_local->block_output)
  100 +#define ei_block_input (ei_local->block_input)
  101 +#define ei_get_8390_hdr (ei_local->get_8390_hdr)
  102 +
  103 +/* use 0 for production, 1 for verification, >2 for debug */
  104 +#ifndef ei_debug
  105 +int ei_debug = 1;
  106 +#endif
  107 +
  108 +/* Index to functions. */
  109 +static void ei_tx_intr(struct net_device *dev);
  110 +static void ei_tx_err(struct net_device *dev);
  111 +static void ei_tx_timeout(struct net_device *dev);
  112 +static void ei_receive(struct net_device *dev);
  113 +static void ei_rx_overrun(struct net_device *dev);
  114 +
  115 +/* Routines generic to NS8390-based boards. */
  116 +static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
  117 + int start_page);
  118 +static void set_multicast_list(struct net_device *dev);
  119 +static void do_set_multicast_list(struct net_device *dev);
  120 +static void __NS8390_init(struct net_device *dev, int startp);
  121 +
  122 +/*
  123 + * SMP and the 8390 setup.
  124 + *
  125 + * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
  126 + * a page register that controls bank and packet buffer access. We guard
  127 + * this with ei_local->page_lock. Nobody should assume or set the page other
  128 + * than zero when the lock is not held. Lock holders must restore page 0
  129 + * before unlocking. Even pure readers must take the lock to protect in
  130 + * page 0.
  131 + *
  132 + * To make life difficult the chip can also be very slow. We therefore can't
  133 + * just use spinlocks. For the longer lockups we disable the irq the device
  134 + * sits on and hold the lock. We must hold the lock because there is a dual
  135 + * processor case other than interrupts (get stats/set multicast list in
  136 + * parallel with each other and transmit).
  137 + *
  138 + * Note: in theory we can just disable the irq on the card _but_ there is
  139 + * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
  140 + * enter lock, take the queued irq. So we waddle instead of flying.
  141 + *
  142 + * Finally by special arrangement for the purpose of being generally
  143 + * annoying the transmit function is called bh atomic. That places
  144 + * restrictions on the user context callers as disable_irq won't save
  145 + * them.
  146 + */
  147 +
  148 +
  149 +
  150 +/**
  151 + * ei_open - Open/initialize the board.
  152 + * @dev: network device to initialize
  153 + *
  154 + * This routine goes all-out, setting everything
  155 + * up anew at each open, even though many of these registers should only
  156 + * need to be set once at boot.
  157 + */
  158 +static int __ei_open(struct net_device *dev)
  159 +{
  160 + unsigned long flags;
  161 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  162 +
  163 + /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
  164 + wrapper that does e.g. media check & then calls ei_tx_timeout. */
  165 + if (dev->tx_timeout == NULL)
  166 + dev->tx_timeout = ei_tx_timeout;
  167 + if (dev->watchdog_timeo <= 0)
  168 + dev->watchdog_timeo = TX_TIMEOUT;
  169 +
  170 + /*
  171 + * Grab the page lock so we own the register set, then call
  172 + * the init function.
  173 + */
  174 +
  175 + spin_lock_irqsave(&ei_local->page_lock, flags);
  176 + __NS8390_init(dev, 1);
  177 + /* Set the flag before we drop the lock, That way the IRQ arrives
  178 + after its set and we get no silly warnings */
  179 + netif_start_queue(dev);
  180 + spin_unlock_irqrestore(&ei_local->page_lock, flags);
  181 + ei_local->irqlock = 0;
  182 + return 0;
  183 +}
  184 +
  185 +/**
  186 + * ei_close - shut down network device
  187 + * @dev: network device to close
  188 + *
  189 + * Opposite of ei_open(). Only used when "ifconfig <devname> down" is done.
  190 + */
  191 +static int __ei_close(struct net_device *dev)
  192 +{
  193 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  194 + unsigned long flags;
  195 +
  196 + /*
  197 + * Hold the page lock during close
  198 + */
  199 +
  200 + spin_lock_irqsave(&ei_local->page_lock, flags);
  201 + __NS8390_init(dev, 0);
  202 + spin_unlock_irqrestore(&ei_local->page_lock, flags);
  203 + netif_stop_queue(dev);
  204 + return 0;
  205 +}
  206 +
  207 +/**
  208 + * ei_tx_timeout - handle transmit time out condition
  209 + * @dev: network device which has apparently fallen asleep
  210 + *
  211 + * Called by kernel when device never acknowledges a transmit has
  212 + * completed (or failed) - i.e. never posted a Tx related interrupt.
  213 + */
  214 +
  215 +static void ei_tx_timeout(struct net_device *dev)
  216 +{
  217 + unsigned long e8390_base = dev->base_addr;
  218 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  219 + int txsr, isr, tickssofar = jiffies - dev->trans_start;
  220 + unsigned long flags;
  221 +
  222 +#if defined(CONFIG_M32R) && defined(CONFIG_SMP)
  223 + unsigned long icucr;
  224 +
  225 + local_irq_save(flags);
  226 + icucr = inl(M32R_ICU_CR1_PORTL);
  227 + icucr |= M32R_ICUCR_ISMOD11;
  228 + outl(icucr, M32R_ICU_CR1_PORTL);
  229 + local_irq_restore(flags);
  230 +#endif
  231 + ei_local->stat.tx_errors++;
  232 +
  233 + spin_lock_irqsave(&ei_local->page_lock, flags);
  234 + txsr = ei_inb(e8390_base+EN0_TSR);
  235 + isr = ei_inb(e8390_base+EN0_ISR);
  236 + spin_unlock_irqrestore(&ei_local->page_lock, flags);
  237 +
  238 + printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
  239 + dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
  240 + (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
  241 +
  242 + if (!isr && !ei_local->stat.tx_packets)
  243 + {
  244 + /* The 8390 probably hasn't gotten on the cable yet. */
  245 + ei_local->interface_num ^= 1; /* Try a different xcvr. */
  246 + }
  247 +
  248 + /* Ugly but a reset can be slow, yet must be protected */
  249 +
  250 + disable_irq_nosync_lockdep(dev->irq);
  251 + spin_lock(&ei_local->page_lock);
  252 +
  253 + /* Try to restart the card. Perhaps the user has fixed something. */
  254 + ei_reset_8390(dev);
  255 + __NS8390_init(dev, 1);
  256 +
  257 + spin_unlock(&ei_local->page_lock);
  258 + enable_irq_lockdep(dev->irq);
  259 + netif_wake_queue(dev);
  260 +}
  261 +
  262 +/**
  263 + * ei_start_xmit - begin packet transmission
  264 + * @skb: packet to be sent
  265 + * @dev: network device to which packet is sent
  266 + *
  267 + * Sends a packet to an 8390 network device.
  268 + */
  269 +
  270 +static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
  271 +{
  272 + unsigned long e8390_base = dev->base_addr;
  273 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  274 + int send_length = skb->len, output_page;
  275 + unsigned long flags;
  276 + char buf[ETH_ZLEN];
  277 + char *data = skb->data;
  278 +
  279 + if (skb->len < ETH_ZLEN) {
  280 + memset(buf, 0, ETH_ZLEN); /* more efficient than doing just the needed bits */
  281 + memcpy(buf, data, skb->len);
  282 + send_length = ETH_ZLEN;
  283 + data = buf;
  284 + }
  285 +
  286 + /* Mask interrupts from the ethercard.
  287 + SMP: We have to grab the lock here otherwise the IRQ handler
  288 + on another CPU can flip window and race the IRQ mask set. We end
  289 + up trashing the mcast filter not disabling irqs if we don't lock */
  290 +
  291 + spin_lock_irqsave(&ei_local->page_lock, flags);
  292 + ei_outb_p(0x00, e8390_base + EN0_IMR);
  293 + spin_unlock_irqrestore(&ei_local->page_lock, flags);
  294 +
  295 +
  296 + /*
  297 + * Slow phase with lock held.
  298 + */
  299 +
  300 + disable_irq_nosync_lockdep_irqsave(dev->irq, &flags);
  301 +
  302 + spin_lock(&ei_local->page_lock);
  303 +
  304 + ei_local->irqlock = 1;
  305 +
  306 + /*
  307 + * We have two Tx slots available for use. Find the first free
  308 + * slot, and then perform some sanity checks. With two Tx bufs,
  309 + * you get very close to transmitting back-to-back packets. With
  310 + * only one Tx buf, the transmitter sits idle while you reload the
  311 + * card, leaving a substantial gap between each transmitted packet.
  312 + */
  313 +
  314 + if (ei_local->tx1 == 0)
  315 + {
  316 + output_page = ei_local->tx_start_page;
  317 + ei_local->tx1 = send_length;
  318 + if (ei_debug && ei_local->tx2 > 0)
  319 + printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
  320 + dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
  321 + }
  322 + else if (ei_local->tx2 == 0)
  323 + {
  324 + output_page = ei_local->tx_start_page + TX_PAGES/2;
  325 + ei_local->tx2 = send_length;
  326 + if (ei_debug && ei_local->tx1 > 0)
  327 + printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
  328 + dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
  329 + }
  330 + else
  331 + { /* We should never get here. */
  332 + if (ei_debug)
  333 + printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
  334 + dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
  335 + ei_local->irqlock = 0;
  336 + netif_stop_queue(dev);
  337 + ei_outb_p(ENISR_ALL, e8390_base + EN0_IMR);
  338 + spin_unlock(&ei_local->page_lock);
  339 + enable_irq_lockdep_irqrestore(dev->irq, &flags);
  340 + ei_local->stat.tx_errors++;
  341 + return 1;
  342 + }
  343 +
  344 + /*
  345 + * Okay, now upload the packet and trigger a send if the transmitter
  346 + * isn't already sending. If it is busy, the interrupt handler will
  347 + * trigger the send later, upon receiving a Tx done interrupt.
  348 + */
  349 +
  350 + ei_block_output(dev, send_length, data, output_page);
  351 +
  352 + if (! ei_local->txing)
  353 + {
  354 + ei_local->txing = 1;
  355 + NS8390_trigger_send(dev, send_length, output_page);
  356 + dev->trans_start = jiffies;
  357 + if (output_page == ei_local->tx_start_page)
  358 + {
  359 + ei_local->tx1 = -1;
  360 + ei_local->lasttx = -1;
  361 + }
  362 + else
  363 + {
  364 + ei_local->tx2 = -1;
  365 + ei_local->lasttx = -2;
  366 + }
  367 + }
  368 + else ei_local->txqueue++;
  369 +
  370 + if (ei_local->tx1 && ei_local->tx2)
  371 + netif_stop_queue(dev);
  372 + else
  373 + netif_start_queue(dev);
  374 +
  375 + /* Turn 8390 interrupts back on. */
  376 + ei_local->irqlock = 0;
  377 + ei_outb_p(ENISR_ALL, e8390_base + EN0_IMR);
  378 +
  379 + spin_unlock(&ei_local->page_lock);
  380 + enable_irq_lockdep_irqrestore(dev->irq, &flags);
  381 +
  382 + dev_kfree_skb (skb);
  383 + ei_local->stat.tx_bytes += send_length;
  384 +
  385 + return 0;
  386 +}
  387 +
  388 +/**
  389 + * ei_interrupt - handle the interrupts from an 8390
  390 + * @irq: interrupt number
  391 + * @dev_id: a pointer to the net_device
  392 + *
  393 + * Handle the ether interface interrupts. We pull packets from
  394 + * the 8390 via the card specific functions and fire them at the networking
  395 + * stack. We also handle transmit completions and wake the transmit path if
  396 + * necessary. We also update the counters and do other housekeeping as
  397 + * needed.
  398 + */
  399 +
  400 +static irqreturn_t __ei_interrupt(int irq, void *dev_id)
  401 +{
  402 + struct net_device *dev = dev_id;
  403 + unsigned long e8390_base = dev->base_addr;
  404 + int interrupts, nr_serviced = 0;
  405 + struct ei_device *ei_local = netdev_priv(dev);
  406 +
  407 + /*
  408 + * Protect the irq test too.
  409 + */
  410 +
  411 + spin_lock(&ei_local->page_lock);
  412 +
  413 + if (ei_local->irqlock)
  414 + {
  415 +#if 1 /* This might just be an interrupt for a PCI device sharing this line */
  416 + /* The "irqlock" check is only for testing. */
  417 + printk(ei_local->irqlock
  418 + ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
  419 + : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
  420 + dev->name, ei_inb_p(e8390_base + EN0_ISR),
  421 + ei_inb_p(e8390_base + EN0_IMR));
  422 +#endif
  423 + spin_unlock(&ei_local->page_lock);
  424 + return IRQ_NONE;
  425 + }
  426 +
  427 + /* Change to page 0 and read the intr status reg. */
  428 + ei_outb_p(E8390_NODMA+E8390_PAGE0, e8390_base + E8390_CMD);
  429 + if (ei_debug > 3)
  430 + printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
  431 + ei_inb_p(e8390_base + EN0_ISR));
  432 +
  433 + /* !!Assumption!! -- we stay in page 0. Don't break this. */
  434 + while ((interrupts = ei_inb_p(e8390_base + EN0_ISR)) != 0
  435 + && ++nr_serviced < MAX_SERVICE)
  436 + {
  437 + if (!netif_running(dev)) {
  438 + printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
  439 + /* rmk - acknowledge the interrupts */
  440 + ei_outb_p(interrupts, e8390_base + EN0_ISR);
  441 + interrupts = 0;
  442 + break;
  443 + }
  444 + if (interrupts & ENISR_OVER)
  445 + ei_rx_overrun(dev);
  446 + else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
  447 + {
  448 + /* Got a good (?) packet. */
  449 + ei_receive(dev);
  450 + }
  451 + /* Push the next to-transmit packet through. */
  452 + if (interrupts & ENISR_TX)
  453 + ei_tx_intr(dev);
  454 + else if (interrupts & ENISR_TX_ERR)
  455 + ei_tx_err(dev);
  456 +
  457 + if (interrupts & ENISR_COUNTERS)
  458 + {
  459 + ei_local->stat.rx_frame_errors += ei_inb_p(e8390_base + EN0_COUNTER0);
  460 + ei_local->stat.rx_crc_errors += ei_inb_p(e8390_base + EN0_COUNTER1);
  461 + ei_local->stat.rx_missed_errors+= ei_inb_p(e8390_base + EN0_COUNTER2);
  462 + ei_outb_p(ENISR_COUNTERS, e8390_base + EN0_ISR); /* Ack intr. */
  463 + }
  464 +
  465 + /* Ignore any RDC interrupts that make it back to here. */
  466 + if (interrupts & ENISR_RDC)
  467 + {
  468 + ei_outb_p(ENISR_RDC, e8390_base + EN0_ISR);
  469 + }
  470 +
  471 + ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base + E8390_CMD);
  472 + }
  473 +
  474 + if (interrupts && ei_debug)
  475 + {
  476 + ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base + E8390_CMD);
  477 + if (nr_serviced >= MAX_SERVICE)
  478 + {
  479 + /* 0xFF is valid for a card removal */
  480 + if(interrupts!=0xFF)
  481 + printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
  482 + dev->name, interrupts);
  483 + ei_outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
  484 + } else {
  485 + printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
  486 + ei_outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
  487 + }
  488 + }
  489 + spin_unlock(&ei_local->page_lock);
  490 + return IRQ_RETVAL(nr_serviced > 0);
  491 +}
  492 +
  493 +#ifdef CONFIG_NET_POLL_CONTROLLER
  494 +static void __ei_poll(struct net_device *dev)
  495 +{
  496 + disable_irq_lockdep(dev->irq);
  497 + __ei_interrupt(dev->irq, dev);
  498 + enable_irq_lockdep(dev->irq);
  499 +}
  500 +#endif
  501 +
  502 +/**
  503 + * ei_tx_err - handle transmitter error
  504 + * @dev: network device which threw the exception
  505 + *
  506 + * A transmitter error has happened. Most likely excess collisions (which
  507 + * is a fairly normal condition). If the error is one where the Tx will
  508 + * have been aborted, we try and send another one right away, instead of
  509 + * letting the failed packet sit and collect dust in the Tx buffer. This
  510 + * is a much better solution as it avoids kernel based Tx timeouts, and
  511 + * an unnecessary card reset.
  512 + *
  513 + * Called with lock held.
  514 + */
  515 +
  516 +static void ei_tx_err(struct net_device *dev)
  517 +{
  518 + unsigned long e8390_base = dev->base_addr;
  519 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  520 + unsigned char txsr = ei_inb_p(e8390_base+EN0_TSR);
  521 + unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
  522 +
  523 +#ifdef VERBOSE_ERROR_DUMP
  524 + printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
  525 + if (txsr & ENTSR_ABT)
  526 + printk("excess-collisions ");
  527 + if (txsr & ENTSR_ND)
  528 + printk("non-deferral ");
  529 + if (txsr & ENTSR_CRS)
  530 + printk("lost-carrier ");
  531 + if (txsr & ENTSR_FU)
  532 + printk("FIFO-underrun ");
  533 + if (txsr & ENTSR_CDH)
  534 + printk("lost-heartbeat ");
  535 + printk("\n");
  536 +#endif
  537 +
  538 + ei_outb_p(ENISR_TX_ERR, e8390_base + EN0_ISR); /* Ack intr. */
  539 +
  540 + if (tx_was_aborted)
  541 + ei_tx_intr(dev);
  542 + else
  543 + {
  544 + ei_local->stat.tx_errors++;
  545 + if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
  546 + if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
  547 + if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
  548 + }
  549 +}
  550 +
  551 +/**
  552 + * ei_tx_intr - transmit interrupt handler
  553 + * @dev: network device for which tx intr is handled
  554 + *
  555 + * We have finished a transmit: check for errors and then trigger the next
  556 + * packet to be sent. Called with lock held.
  557 + */
  558 +
  559 +static void ei_tx_intr(struct net_device *dev)
  560 +{
  561 + unsigned long e8390_base = dev->base_addr;
  562 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  563 + int status = ei_inb(e8390_base + EN0_TSR);
  564 +
  565 + ei_outb_p(ENISR_TX, e8390_base + EN0_ISR); /* Ack intr. */
  566 +
  567 + /*
  568 + * There are two Tx buffers, see which one finished, and trigger
  569 + * the send of another one if it exists.
  570 + */
  571 + ei_local->txqueue--;
  572 +
  573 + if (ei_local->tx1 < 0)
  574 + {
  575 + if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
  576 + printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
  577 + ei_local->name, ei_local->lasttx, ei_local->tx1);
  578 + ei_local->tx1 = 0;
  579 + if (ei_local->tx2 > 0)
  580 + {
  581 + ei_local->txing = 1;
  582 + NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
  583 + dev->trans_start = jiffies;
  584 + ei_local->tx2 = -1,
  585 + ei_local->lasttx = 2;
  586 + }
  587 + else ei_local->lasttx = 20, ei_local->txing = 0;
  588 + }
  589 + else if (ei_local->tx2 < 0)
  590 + {
  591 + if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
  592 + printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
  593 + ei_local->name, ei_local->lasttx, ei_local->tx2);
  594 + ei_local->tx2 = 0;
  595 + if (ei_local->tx1 > 0)
  596 + {
  597 + ei_local->txing = 1;
  598 + NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
  599 + dev->trans_start = jiffies;
  600 + ei_local->tx1 = -1;
  601 + ei_local->lasttx = 1;
  602 + }
  603 + else
  604 + ei_local->lasttx = 10, ei_local->txing = 0;
  605 + }
  606 +// else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
  607 +// dev->name, ei_local->lasttx);
  608 +
  609 + /* Minimize Tx latency: update the statistics after we restart TXing. */
  610 + if (status & ENTSR_COL)
  611 + ei_local->stat.collisions++;
  612 + if (status & ENTSR_PTX)
  613 + ei_local->stat.tx_packets++;
  614 + else
  615 + {
  616 + ei_local->stat.tx_errors++;
  617 + if (status & ENTSR_ABT)
  618 + {
  619 + ei_local->stat.tx_aborted_errors++;
  620 + ei_local->stat.collisions += 16;
  621 + }
  622 + if (status & ENTSR_CRS)
  623 + ei_local->stat.tx_carrier_errors++;
  624 + if (status & ENTSR_FU)
  625 + ei_local->stat.tx_fifo_errors++;
  626 + if (status & ENTSR_CDH)
  627 + ei_local->stat.tx_heartbeat_errors++;
  628 + if (status & ENTSR_OWC)
  629 + ei_local->stat.tx_window_errors++;
  630 + }
  631 + netif_wake_queue(dev);
  632 +}
  633 +
  634 +/**
  635 + * ei_receive - receive some packets
  636 + * @dev: network device with which receive will be run
  637 + *
  638 + * We have a good packet(s), get it/them out of the buffers.
  639 + * Called with lock held.
  640 + */
  641 +
  642 +static void ei_receive(struct net_device *dev)
  643 +{
  644 + unsigned long e8390_base = dev->base_addr;
  645 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  646 + unsigned char rxing_page, this_frame, next_frame;
  647 + unsigned short current_offset;
  648 + int rx_pkt_count = 0;
  649 + struct e8390_pkt_hdr rx_frame;
  650 + int num_rx_pages = ei_local->stop_page-ei_local->rx_start_page;
  651 +
  652 + while (++rx_pkt_count < 10)
  653 + {
  654 + int pkt_len, pkt_stat;
  655 +
  656 + /* Get the rx page (incoming packet pointer). */
  657 + ei_outb_p(E8390_NODMA+E8390_PAGE1, e8390_base + E8390_CMD);
  658 + rxing_page = ei_inb_p(e8390_base + EN1_CURPAG);
  659 + ei_outb_p(E8390_NODMA+E8390_PAGE0, e8390_base + E8390_CMD);
  660 +
  661 + /* Remove one frame from the ring. Boundary is always a page behind. */
  662 + this_frame = ei_inb_p(e8390_base + EN0_BOUNDARY) + 1;
  663 + if (this_frame >= ei_local->stop_page)
  664 + this_frame = ei_local->rx_start_page;
  665 +
  666 + /* Someday we'll omit the previous, iff we never get this message.
  667 + (There is at least one clone claimed to have a problem.)
  668 +
  669 + Keep quiet if it looks like a card removal. One problem here
  670 + is that some clones crash in roughly the same way.
  671 + */
  672 + if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
  673 + printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
  674 + dev->name, this_frame, ei_local->current_page);
  675 +
  676 + if (this_frame == rxing_page) /* Read all the frames? */
  677 + break; /* Done for now */
  678 +
  679 + current_offset = this_frame << 8;
  680 + ei_get_8390_hdr(dev, &rx_frame, this_frame);
  681 +
  682 + pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
  683 + pkt_stat = rx_frame.status;
  684 +
  685 + next_frame = this_frame + 1 + ((pkt_len+4)>>8);
  686 +
  687 + /* Check for bogosity warned by 3c503 book: the status byte is never
  688 + written. This happened a lot during testing! This code should be
  689 + cleaned up someday. */
  690 + if (rx_frame.next != next_frame
  691 + && rx_frame.next != next_frame + 1
  692 + && rx_frame.next != next_frame - num_rx_pages
  693 + && rx_frame.next != next_frame + 1 - num_rx_pages) {
  694 + ei_local->current_page = rxing_page;
  695 + ei_outb(ei_local->current_page-1, e8390_base+EN0_BOUNDARY);
  696 + ei_local->stat.rx_errors++;
  697 + continue;
  698 + }
  699 +
  700 + if (pkt_len < 60 || pkt_len > 1518)
  701 + {
  702 + if (ei_debug)
  703 + printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
  704 + dev->name, rx_frame.count, rx_frame.status,
  705 + rx_frame.next);
  706 + ei_local->stat.rx_errors++;
  707 + ei_local->stat.rx_length_errors++;
  708 + }
  709 + else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
  710 + {
  711 + struct sk_buff *skb;
  712 +
  713 + skb = dev_alloc_skb(pkt_len+2);
  714 + if (skb == NULL)
  715 + {
  716 + if (ei_debug > 1)
  717 + printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
  718 + dev->name, pkt_len);
  719 + ei_local->stat.rx_dropped++;
  720 + break;
  721 + }
  722 + else
  723 + {
  724 + skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
  725 + skb->dev = dev;
  726 + skb_put(skb, pkt_len); /* Make room */
  727 + ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
  728 + skb->protocol=eth_type_trans(skb,dev);
  729 + netif_rx(skb);
  730 + dev->last_rx = jiffies;
  731 + ei_local->stat.rx_packets++;
  732 + ei_local->stat.rx_bytes += pkt_len;
  733 + if (pkt_stat & ENRSR_PHY)
  734 + ei_local->stat.multicast++;
  735 + }
  736 + }
  737 + else
  738 + {
  739 + if (ei_debug)
  740 + printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
  741 + dev->name, rx_frame.status, rx_frame.next,
  742 + rx_frame.count);
  743 + ei_local->stat.rx_errors++;
  744 + /* NB: The NIC counts CRC, frame and missed errors. */
  745 + if (pkt_stat & ENRSR_FO)
  746 + ei_local->stat.rx_fifo_errors++;
  747 + }
  748 + next_frame = rx_frame.next;
  749 +
  750 + /* This _should_ never happen: it's here for avoiding bad clones. */
  751 + if (next_frame >= ei_local->stop_page) {
  752 + printk("%s: next frame inconsistency, %#2x\n", dev->name,
  753 + next_frame);
  754 + next_frame = ei_local->rx_start_page;
  755 + }
  756 + ei_local->current_page = next_frame;
  757 + ei_outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
  758 + }
  759 +
  760 + /* We used to also ack ENISR_OVER here, but that would sometimes mask
  761 + a real overrun, leaving the 8390 in a stopped state with rec'vr off. */
  762 + ei_outb_p(ENISR_RX+ENISR_RX_ERR, e8390_base+EN0_ISR);
  763 + return;
  764 +}
  765 +
  766 +/**
  767 + * ei_rx_overrun - handle receiver overrun
  768 + * @dev: network device which threw exception
  769 + *
  770 + * We have a receiver overrun: we have to kick the 8390 to get it started
  771 + * again. Problem is that you have to kick it exactly as NS prescribes in
  772 + * the updated datasheets, or "the NIC may act in an unpredictable manner."
  773 + * This includes causing "the NIC to defer indefinitely when it is stopped
  774 + * on a busy network." Ugh.
  775 + * Called with lock held. Don't call this with the interrupts off or your
  776 + * computer will hate you - it takes 10ms or so.
  777 + */
  778 +
  779 +static void ei_rx_overrun(struct net_device *dev)
  780 +{
  781 + unsigned long e8390_base = dev->base_addr;
  782 + unsigned char was_txing, must_resend = 0;
  783 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  784 +
  785 + /*
  786 + * Record whether a Tx was in progress and then issue the
  787 + * stop command.
  788 + */
  789 + was_txing = ei_inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
  790 + ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
  791 +
  792 + if (ei_debug > 1)
  793 + printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
  794 + ei_local->stat.rx_over_errors++;
  795 +
  796 + /*
  797 + * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
  798 + * Early datasheets said to poll the reset bit, but now they say that
  799 + * it "is not a reliable indicator and subsequently should be ignored."
  800 + * We wait at least 10ms.
  801 + */
  802 +
  803 + mdelay(10);
  804 +
  805 + /*
  806 + * Reset RBCR[01] back to zero as per magic incantation.
  807 + */
  808 + ei_outb_p(0x00, e8390_base+EN0_RCNTLO);
  809 + ei_outb_p(0x00, e8390_base+EN0_RCNTHI);
  810 +
  811 + /*
  812 + * See if any Tx was interrupted or not. According to NS, this
  813 + * step is vital, and skipping it will cause no end of havoc.
  814 + */
  815 +
  816 + if (was_txing)
  817 + {
  818 + unsigned char tx_completed = ei_inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
  819 + if (!tx_completed)
  820 + must_resend = 1;
  821 + }
  822 +
  823 + /*
  824 + * Have to enter loopback mode and then restart the NIC before
  825 + * you are allowed to slurp packets up off the ring.
  826 + */
  827 + ei_outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
  828 + ei_outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
  829 +
  830 + /*
  831 + * Clear the Rx ring of all the debris, and ack the interrupt.
  832 + */
  833 + ei_receive(dev);
  834 + ei_outb_p(ENISR_OVER, e8390_base+EN0_ISR);
  835 +
  836 + /*
  837 + * Leave loopback mode, and resend any packet that got stopped.
  838 + */
  839 + ei_outb_p(E8390_TXCONFIG, e8390_base + EN0_TXCR);
  840 + if (must_resend)
  841 + ei_outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
  842 +}
  843 +
  844 +/*
  845 + * Collect the stats. This is called unlocked and from several contexts.
  846 + */
  847 +
  848 +static struct net_device_stats *get_stats(struct net_device *dev)
  849 +{
  850 + unsigned long ioaddr = dev->base_addr;
  851 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  852 + unsigned long flags;
  853 +
  854 + /* If the card is stopped, just return the present stats. */
  855 + if (!netif_running(dev))
  856 + return &ei_local->stat;
  857 +
  858 + spin_lock_irqsave(&ei_local->page_lock,flags);
  859 + /* Read the counter registers, assuming we are in page 0. */
  860 + ei_local->stat.rx_frame_errors += ei_inb_p(ioaddr + EN0_COUNTER0);
  861 + ei_local->stat.rx_crc_errors += ei_inb_p(ioaddr + EN0_COUNTER1);
  862 + ei_local->stat.rx_missed_errors+= ei_inb_p(ioaddr + EN0_COUNTER2);
  863 + spin_unlock_irqrestore(&ei_local->page_lock, flags);
  864 +
  865 + return &ei_local->stat;
  866 +}
  867 +
  868 +/*
  869 + * Form the 64 bit 8390 multicast table from the linked list of addresses
  870 + * associated with this dev structure.
  871 + */
  872 +
  873 +static inline void make_mc_bits(u8 *bits, struct net_device *dev)
  874 +{
  875 + struct dev_mc_list *dmi;
  876 +
  877 + for (dmi=dev->mc_list; dmi; dmi=dmi->next)
  878 + {
  879 + u32 crc;
  880 + if (dmi->dmi_addrlen != ETH_ALEN)
  881 + {
  882 + printk(KERN_INFO "%s: invalid multicast address length given.\n", dev->name);
  883 + continue;
  884 + }
  885 + crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
  886 + /*
  887 + * The 8390 uses the 6 most significant bits of the
  888 + * CRC to index the multicast table.
  889 + */
  890 + bits[crc>>29] |= (1<<((crc>>26)&7));
  891 + }
  892 +}
  893 +
  894 +/**
  895 + * do_set_multicast_list - set/clear multicast filter
  896 + * @dev: net device for which multicast filter is adjusted
  897 + *
  898 + * Set or clear the multicast filter for this adaptor. May be called
  899 + * from a BH in 2.1.x. Must be called with lock held.
  900 + */
  901 +
  902 +static void do_set_multicast_list(struct net_device *dev)
  903 +{
  904 + unsigned long e8390_base = dev->base_addr;
  905 + int i;
  906 + struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
  907 +
  908 + if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI)))
  909 + {
  910 + memset(ei_local->mcfilter, 0, 8);
  911 + if (dev->mc_list)
  912 + make_mc_bits(ei_local->mcfilter, dev);
  913 + }
  914 + else
  915 + memset(ei_local->mcfilter, 0xFF, 8); /* mcast set to accept-all */
  916 +
  917 + /*
  918 + * DP8390 manuals don't specify any magic sequence for altering
  919 + * the multicast regs on an already running card. To be safe, we
  920 + * ensure multicast mode is off prior to loading up the new hash
  921 + * table. If this proves to be not enough, we can always resort
  922 + * to stopping the NIC, loading the table and then restarting.
  923 + *
  924 + * Bug Alert! The MC regs on the SMC 83C690 (SMC Elite and SMC
  925 + * Elite16) appear to be write-only. The NS 8390 data sheet lists
  926 + * them as r/w so this is a bug. The SMC 83C790 (SMC Ultra and
  927 + * Ultra32 EISA) appears to have this bug fixed.
  928 + */
  929 +
  930 + if (netif_running(dev))
  931 + ei_outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
  932 + ei_outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
  933 + for(i = 0; i < 8; i++)
  934 + {
  935 + ei_outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
  936 +#ifndef BUG_83C690
  937 + if(ei_inb_p(e8390_base + EN1_MULT_SHIFT(i))!=ei_local->mcfilter[i])
  938 + printk(KERN_ERR "Multicast filter read/write mismap %d\n",i);
  939 +#endif
  940 + }
  941 + ei_outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
  942 +
  943 + if(dev->flags&IFF_PROMISC)
  944 + ei_outb_p(E8390_RXCONFIG | 0x18, e8390_base + EN0_RXCR);
  945 + else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
  946 + ei_outb_p(E8390_RXCONFIG | 0x08, e8390_base + EN0_RXCR);
  947 + else
  948 + ei_outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
  949 + }
  950 +
  951 +/*
  952 + * Called without lock held. This is invoked from user context and may
  953 + * be parallel to just about everything else. Its also fairly quick and
  954 + * not called too often. Must protect against both bh and irq users
  955 + */
  956 +
  957 +static void set_multicast_list(struct net_device *dev)
  958 +{
  959 + unsigned long flags;
  960 + struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
  961 +
  962 + spin_lock_irqsave(&ei_local->page_lock, flags);
  963 + do_set_multicast_list(dev);
  964 + spin_unlock_irqrestore(&ei_local->page_lock, flags);
  965 +}
  966 +
  967 +/**
  968 + * ethdev_setup - init rest of 8390 device struct
  969 + * @dev: network device structure to init
  970 + *
  971 + * Initialize the rest of the 8390 device structure. Do NOT __init
  972 + * this, as it is used by 8390 based modular drivers too.
  973 + */
  974 +
  975 +static void ethdev_setup(struct net_device *dev)
  976 +{
  977 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  978 + if (ei_debug > 1)
  979 + printk(version);
  980 +
  981 + dev->hard_start_xmit = &ei_start_xmit;
  982 + dev->get_stats = get_stats;
  983 + dev->set_multicast_list = &set_multicast_list;
  984 +
  985 + ether_setup(dev);
  986 +
  987 + spin_lock_init(&ei_local->page_lock);
  988 +}
  989 +
  990 +/**
  991 + * alloc_ei_netdev - alloc_etherdev counterpart for 8390
  992 + * @size: extra bytes to allocate
  993 + *
  994 + * Allocate 8390-specific net_device.
  995 + */
  996 +static struct net_device *____alloc_ei_netdev(int size)
  997 +{
  998 + return alloc_netdev(sizeof(struct ei_device) + size, "eth%d",
  999 + ethdev_setup);
  1000 +}
  1001 +
  1002 +
  1003 +
  1004 +
  1005 +/* This page of functions should be 8390 generic */
  1006 +/* Follow National Semi's recommendations for initializing the "NIC". */
  1007 +
  1008 +/**
  1009 + * NS8390_init - initialize 8390 hardware
  1010 + * @dev: network device to initialize
  1011 + * @startp: boolean. non-zero value to initiate chip processing
  1012 + *
  1013 + * Must be called with lock held.
  1014 + */
  1015 +
  1016 +static void __NS8390_init(struct net_device *dev, int startp)
  1017 +{
  1018 + unsigned long e8390_base = dev->base_addr;
  1019 + struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
  1020 + int i;
  1021 + int endcfg = ei_local->word16
  1022 + ? (0x48 | ENDCFG_WTS | (ei_local->bigendian ? ENDCFG_BOS : 0))
  1023 + : 0x48;
  1024 +
  1025 + if(sizeof(struct e8390_pkt_hdr)!=4)
  1026 + panic("8390.c: header struct mispacked\n");
  1027 + /* Follow National Semi's recommendations for initing the DP83902. */
  1028 + ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
  1029 + ei_outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
  1030 + /* Clear the remote byte count registers. */
  1031 + ei_outb_p(0x00, e8390_base + EN0_RCNTLO);
  1032 + ei_outb_p(0x00, e8390_base + EN0_RCNTHI);
  1033 + /* Set to monitor and loopback mode -- this is vital!. */
  1034 + ei_outb_p(E8390_RXOFF, e8390_base + EN0_RXCR); /* 0x20 */
  1035 + ei_outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
  1036 + /* Set the transmit page and receive ring. */
  1037 + ei_outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
  1038 + ei_local->tx1 = ei_local->tx2 = 0;
  1039 + ei_outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
  1040 + ei_outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
  1041 + ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
  1042 + ei_outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
  1043 + /* Clear the pending interrupts and mask. */
  1044 + ei_outb_p(0xFF, e8390_base + EN0_ISR);
  1045 + ei_outb_p(0x00, e8390_base + EN0_IMR);
  1046 +
  1047 + /* Copy the station address into the DS8390 registers. */
  1048 +
  1049 + ei_outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
  1050 + for(i = 0; i < 6; i++)
  1051 + {
  1052 + ei_outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
  1053 + if (ei_debug > 1 && ei_inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
  1054 + printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
  1055 + }
  1056 +
  1057 + ei_outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
  1058 + ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
  1059 +
  1060 + netif_start_queue(dev);
  1061 + ei_local->tx1 = ei_local->tx2 = 0;
  1062 + ei_local->txing = 0;
  1063 +
  1064 + if (startp)
  1065 + {
  1066 + ei_outb_p(0xff, e8390_base + EN0_ISR);
  1067 + ei_outb_p(ENISR_ALL, e8390_base + EN0_IMR);
  1068 + ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
  1069 + ei_outb_p(E8390_TXCONFIG, e8390_base + EN0_TXCR); /* xmit on. */
  1070 + /* 3c503 TechMan says rxconfig only after the NIC is started. */
  1071 + ei_outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR); /* rx on, */
  1072 + do_set_multicast_list(dev); /* (re)load the mcast table */
  1073 + }
  1074 +}
  1075 +
  1076 +/* Trigger a transmit start, assuming the length is valid.
  1077 + Always called with the page lock held */
  1078 +
  1079 +static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
  1080 + int start_page)
  1081 +{
  1082 + unsigned long e8390_base = dev->base_addr;
  1083 + struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
  1084 +
  1085 + ei_outb_p(E8390_NODMA+E8390_PAGE0, e8390_base+E8390_CMD);
  1086 +
  1087 + if (ei_inb_p(e8390_base + E8390_CMD) & E8390_TRANS)
  1088 + {
  1089 + printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
  1090 + dev->name);
  1091 + return;
  1092 + }
  1093 + ei_outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
  1094 + ei_outb_p(length >> 8, e8390_base + EN0_TCNTHI);
  1095 + ei_outb_p(start_page, e8390_base + EN0_TPSR);
  1096 + ei_outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);
  1097 +}