diff options
author | Paul Mackerras <paulus@samba.org> | 2006-12-03 23:59:07 -0500 |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2006-12-03 23:59:07 -0500 |
commit | 79acbb3ff2d8095b692e1502b9eb2ccec348de26 (patch) | |
tree | 6ab773e5a8f9de2cd6443362b21d0d6fffe3b35e /drivers/net/8390.c | |
parent | 19a79859e168640f8e16d7b216d211c1c52b687a (diff) | |
parent | 2b5f6dcce5bf94b9b119e9ed8d537098ec61c3d2 (diff) |
Merge branch 'linux-2.6' into for-linus
Diffstat (limited to 'drivers/net/8390.c')
-rw-r--r-- | drivers/net/8390.c | 1080 |
1 files changed, 8 insertions, 1072 deletions
diff --git a/drivers/net/8390.c b/drivers/net/8390.c index 3d1c599ac3cb..a82807641dcf 100644 --- a/drivers/net/8390.c +++ b/drivers/net/8390.c | |||
@@ -1,1104 +1,40 @@ | |||
1 | /* 8390.c: A general NS8390 ethernet driver core for linux. */ | 1 | /* 8390 core for usual drivers */ |
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 | 2 | ||
53 | static const char version[] = | 3 | static const char version[] = |
54 | "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n"; | 4 | "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n"; |
55 | 5 | ||
56 | #include <linux/module.h> | 6 | #include "lib8390.c" |
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> | ||
74 | |||
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 | 7 | ||
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 | int ei_open(struct net_device *dev) | 8 | int ei_open(struct net_device *dev) |
161 | { | 9 | { |
162 | unsigned long flags; | 10 | return __ei_open(dev); |
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; | ||
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 | int ei_close(struct net_device *dev) | 13 | int ei_close(struct net_device *dev) |
194 | { | 14 | { |
195 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | 15 | return __ei_close(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; | ||
207 | } | ||
208 | |||
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 | } | 16 | } |
389 | 17 | ||
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 | irqreturn_t ei_interrupt(int irq, void *dev_id) | 18 | irqreturn_t ei_interrupt(int irq, void *dev_id) |
403 | { | 19 | { |
404 | struct net_device *dev = dev_id; | 20 | return __ei_interrupt(irq, 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); | ||
496 | } | 21 | } |
497 | 22 | ||
498 | #ifdef CONFIG_NET_POLL_CONTROLLER | 23 | #ifdef CONFIG_NET_POLL_CONTROLLER |
499 | void ei_poll(struct net_device *dev) | 24 | void ei_poll(struct net_device *dev) |
500 | { | 25 | { |
501 | disable_irq_lockdep(dev->irq); | 26 | __ei_poll(dev); |
502 | ei_interrupt(dev->irq, dev); | ||
503 | enable_irq_lockdep(dev->irq); | ||
504 | } | 27 | } |
505 | #endif | 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 | struct net_device *__alloc_ei_netdev(int size) | 30 | struct net_device *__alloc_ei_netdev(int size) |
1002 | { | 31 | { |
1003 | return alloc_netdev(sizeof(struct ei_device) + size, "eth%d", | 32 | return ____alloc_ei_netdev(size); |
1004 | ethdev_setup); | ||
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 | void NS8390_init(struct net_device *dev, int startp) | 35 | void NS8390_init(struct net_device *dev, int startp) |
1022 | { | 36 | { |
1023 | long e8390_base = dev->base_addr; | 37 | return __NS8390_init(dev, startp); |
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); | ||
1102 | } | 38 | } |
1103 | 39 | ||
1104 | EXPORT_SYMBOL(ei_open); | 40 | EXPORT_SYMBOL(ei_open); |