1 /* Intel EtherExpress 16 device driver for Linux
3 * Written by John Sullivan, 1995
4 * based on original code by Donald Becker, with changes by
5 * Alan Cox and Pauline Middelink.
7 * Support for 8-bit mode by Zoltan Szilagyi <zoltans@cs.arizona.edu>
9 * Many modifications, and currently maintained, by
10 * Philip Blundell <philb@gnu.org>
11 * Added the Compaq LTE Alan Cox <alan@redhat.com>
12 * Added MCA support Adam Fritzler <mid@auk.cx>
14 * Note - this driver is experimental still - it has problems on faster
15 * machines. Someone needs to sit down and go through it line by line with
19 /* The EtherExpress 16 is a fairly simple card, based on a shared-memory
20 * design using the i82586 Ethernet coprocessor. It bears no relationship,
21 * as far as I know, to the similarly-named "EtherExpress Pro" range.
23 * Historically, Linux support for these cards has been very bad. However,
24 * things seem to be getting better slowly.
27 /* If your card is confused about what sort of interface it has (eg it
28 * persistently reports "10baseT" when none is fitted), running 'SOFTSET /BART'
29 * or 'SOFTSET /LISA' from DOS seems to help.
32 /* Here's the scoop on memory mapping.
34 * There are three ways to access EtherExpress card memory: either using the
35 * shared-memory mapping, or using PIO through the dataport, or using PIO
36 * through the "shadow memory" ports.
38 * The shadow memory system works by having the card map some of its memory
41 * (the low five bits of the SMPTR are ignored)
43 * base+0x4000..400f memory at SMPTR+0..15
44 * base+0x8000..800f memory at SMPTR+16..31
45 * base+0xc000..c007 dubious stuff (memory at SMPTR+16..23 apparently)
46 * base+0xc008..c00f memory at 0x0008..0x000f
48 * This last set (the one at c008) is particularly handy because the SCB
49 * lives at 0x0008. So that set of ports gives us easy random access to data
50 * in the SCB without having to mess around setting up pointers and the like.
51 * We always use this method to access the SCB (via the scb_xx() functions).
53 * Dataport access works by aiming the appropriate (read or write) pointer
54 * at the first address you're interested in, and then reading or writing from
55 * the dataport. The pointers auto-increment after each transfer. We use
56 * this for data transfer.
58 * We don't use the shared-memory system because it allegedly doesn't work on
59 * all cards, and because it's a bit more prone to go wrong (it's one more
60 * thing to configure...).
65 * - The card seems to want to give us two interrupts every time something
66 * happens, where just one would be better.
71 * Note by Zoltan Szilagyi 10-12-96:
73 * I've succeeded in eliminating the "CU wedged" messages, and hence the
74 * lockups, which were only occurring with cards running in 8-bit mode ("force
75 * 8-bit operation" in Intel's SoftSet utility). This version of the driver
76 * sets the 82586 and the ASIC to 8-bit mode at startup; it also stops the
77 * CU before submitting a packet for transmission, and then restarts it as soon
78 * as the process of handing the packet is complete. This is definitely an
79 * unnecessary slowdown if the card is running in 16-bit mode; therefore one
80 * should detect 16-bit vs 8-bit mode from the EEPROM settings and act
81 * accordingly. In 8-bit mode with this bugfix I'm getting about 150 K/s for
82 * ftp's, which is significantly better than I get in DOS, so the overhead of
83 * stopping and restarting the CU with each transmit is not prohibitive in
86 * Update by David Woodhouse 11/5/99:
88 * I've seen "CU wedged" messages in 16-bit mode, on the Alpha architecture.
89 * I assume that this is because 16-bit accesses are actually handled as two
100 #include <linux/config.h>
101 #include <linux/module.h>
102 #include <linux/kernel.h>
103 #include <linux/types.h>
104 #include <linux/fcntl.h>
105 #include <linux/interrupt.h>
106 #include <linux/ioport.h>
107 #include <linux/string.h>
108 #include <linux/in.h>
109 #include <linux/delay.h>
110 #include <linux/errno.h>
111 #include <linux/init.h>
112 #include <linux/netdevice.h>
113 #include <linux/etherdevice.h>
114 #include <linux/skbuff.h>
115 #include <linux/slab.h>
116 #include <linux/mca-legacy.h>
117 #include <linux/spinlock.h>
118 #include <linux/bitops.h>
120 #include <asm/system.h>
128 #include "eexpress.h"
130 #define EEXP_IO_EXTENT 16
133 * Private data declarations
138 struct net_device_stats stats
;
139 unsigned long last_tx
; /* jiffies when last transmit started */
140 unsigned long init_time
; /* jiffies when eexp_hw_init586 called */
141 unsigned short rx_first
; /* first rx buf, same as RX_BUF_START */
142 unsigned short rx_last
; /* last rx buf */
143 unsigned short rx_ptr
; /* first rx buf to look at */
144 unsigned short tx_head
; /* next free tx buf */
145 unsigned short tx_reap
; /* first in-use tx buf */
146 unsigned short tx_tail
; /* previous tx buf to tx_head */
147 unsigned short tx_link
; /* last known-executing tx buf */
148 unsigned short last_tx_restart
; /* set to tx_link when we
150 unsigned char started
;
151 unsigned short rx_buf_start
;
152 unsigned short rx_buf_end
;
153 unsigned short num_tx_bufs
;
154 unsigned short num_rx_bufs
;
155 unsigned char width
; /* 0 for 16bit, 1 for 8bit */
156 unsigned char was_promisc
;
157 unsigned char old_mc_count
;
161 /* This is the code and data that is downloaded to the EtherExpress card's
162 * memory at boot time.
165 static unsigned short start_code
[] = {
167 0x0001, /* ISCP: busy - cleared after reset */
168 0x0008,0x0000,0x0000, /* offset,address (lo,hi) of SCB */
170 0x0000,0x0000, /* SCB: status, commands */
171 0x0000,0x0000, /* links to first command block,
172 first receive descriptor */
173 0x0000,0x0000, /* CRC error, alignment error counts */
174 0x0000,0x0000, /* out of resources, overrun error counts */
176 0x0000,0x0000, /* pad */
179 /* 0x20 -- start of 82586 CU program */
180 #define CONF_LINK 0x20
182 0x0032, /* link to next command */
183 0x080c, /* 12 bytes follow : fifo threshold=8 */
184 0x2e40, /* don't rx bad frames
185 * SRDY/ARDY => ext. sync. : preamble len=8
186 * take addresses from data buffers
189 0x6000, /* default backoff method & priority
190 * interframe spacing = 0x60 */
191 0xf200, /* slot time=0x200
192 * max collision retry = 0xf */
193 #define CONF_PROMISC 0x2e
194 0x0000, /* no HDLC : normal CRC : enable broadcast
195 * disable promiscuous/multicast modes */
196 0x003c, /* minimum frame length = 60 octets) */
199 0x003e, /* link to next command */
200 #define CONF_HWADDR 0x38
201 0x0000,0x0000,0x0000, /* hardware address placed here */
204 0x0076, /* link to next command */
205 #define CONF_NR_MULTICAST 0x44
206 0x0000, /* number of multicast addresses */
207 #define CONF_MULTICAST 0x46
208 0x0000, 0x0000, 0x0000, /* some addresses */
209 0x0000, 0x0000, 0x0000,
210 0x0000, 0x0000, 0x0000,
211 0x0000, 0x0000, 0x0000,
212 0x0000, 0x0000, 0x0000,
213 0x0000, 0x0000, 0x0000,
214 0x0000, 0x0000, 0x0000,
215 0x0000, 0x0000, 0x0000,
217 #define CONF_DIAG_RESULT 0x76
219 0x007c, /* link to next command */
221 0x0000,Cmd_TDR
|Cmd_INT
,
223 #define CONF_TDR_RESULT 0x82
226 0x0000,Cmd_END
|Cmd_Nop
, /* end of configure sequence */
227 0x0084 /* dummy link */
230 /* maps irq number to EtherExpress magic value */
231 static char irqrmap
[] = { 0,0,1,2,3,4,0,0,0,1,5,6,0,0,0,0 };
233 #ifdef CONFIG_MCA_LEGACY
234 /* mapping of the first four bits of the second POS register */
235 static unsigned short mca_iomap
[] = {
236 0x270, 0x260, 0x250, 0x240, 0x230, 0x220, 0x210, 0x200,
237 0x370, 0x360, 0x350, 0x340, 0x330, 0x320, 0x310, 0x300
239 /* bits 5-7 of the second POS register */
240 static char mca_irqmap
[] = { 12, 9, 3, 4, 5, 10, 11, 15 };
244 * Prototypes for Linux interface
247 static int eexp_open(struct net_device
*dev
);
248 static int eexp_close(struct net_device
*dev
);
249 static void eexp_timeout(struct net_device
*dev
);
250 static struct net_device_stats
*eexp_stats(struct net_device
*dev
);
251 static int eexp_xmit(struct sk_buff
*buf
, struct net_device
*dev
);
253 static irqreturn_t
eexp_irq(int irq
, void *dev_addr
, struct pt_regs
*regs
);
254 static void eexp_set_multicast(struct net_device
*dev
);
257 * Prototypes for hardware access functions
260 static void eexp_hw_rx_pio(struct net_device
*dev
);
261 static void eexp_hw_tx_pio(struct net_device
*dev
, unsigned short *buf
,
263 static int eexp_hw_probe(struct net_device
*dev
,unsigned short ioaddr
);
264 static unsigned short eexp_hw_readeeprom(unsigned short ioaddr
,
265 unsigned char location
);
267 static unsigned short eexp_hw_lasttxstat(struct net_device
*dev
);
268 static void eexp_hw_txrestart(struct net_device
*dev
);
270 static void eexp_hw_txinit (struct net_device
*dev
);
271 static void eexp_hw_rxinit (struct net_device
*dev
);
273 static void eexp_hw_init586 (struct net_device
*dev
);
274 static void eexp_setup_filter (struct net_device
*dev
);
276 static char *eexp_ifmap
[]={"AUI", "BNC", "RJ45"};
277 enum eexp_iftype
{AUI
=0, BNC
=1, TPE
=2};
283 * Primitive hardware access functions.
286 static inline unsigned short scb_status(struct net_device
*dev
)
288 return inw(dev
->base_addr
+ 0xc008);
291 static inline unsigned short scb_rdcmd(struct net_device
*dev
)
293 return inw(dev
->base_addr
+ 0xc00a);
296 static inline void scb_command(struct net_device
*dev
, unsigned short cmd
)
298 outw(cmd
, dev
->base_addr
+ 0xc00a);
301 static inline void scb_wrcbl(struct net_device
*dev
, unsigned short val
)
303 outw(val
, dev
->base_addr
+ 0xc00c);
306 static inline void scb_wrrfa(struct net_device
*dev
, unsigned short val
)
308 outw(val
, dev
->base_addr
+ 0xc00e);
311 static inline void set_loopback(struct net_device
*dev
)
313 outb(inb(dev
->base_addr
+ Config
) | 2, dev
->base_addr
+ Config
);
316 static inline void clear_loopback(struct net_device
*dev
)
318 outb(inb(dev
->base_addr
+ Config
) & ~2, dev
->base_addr
+ Config
);
321 static inline unsigned short int SHADOW(short int addr
)
324 if (addr
> 0xf) addr
+= 0x3ff0;
325 return addr
+ 0x4000;
333 * checks for presence of EtherExpress card
336 static int __init
do_express_probe(struct net_device
*dev
)
338 unsigned short *port
;
339 static unsigned short ports
[] = { 0x240,0x300,0x310,0x270,0x320,0x340,0 };
340 unsigned short ioaddr
= dev
->base_addr
;
341 int dev_irq
= dev
->irq
;
344 SET_MODULE_OWNER(dev
);
346 dev
->if_port
= 0xff; /* not set */
348 #ifdef CONFIG_MCA_LEGACY
353 * Only find one card at a time. Subsequent calls
354 * will find others, however, proper multicard MCA
355 * probing and setup can't be done with the
356 * old-style Space.c init routines. -- ASF
358 while (slot
!= MCA_NOTFOUND
) {
361 slot
= mca_find_unused_adapter(0x628B, slot
);
362 if (slot
== MCA_NOTFOUND
)
365 pos0
= mca_read_stored_pos(slot
, 2);
366 pos1
= mca_read_stored_pos(slot
, 3);
367 ioaddr
= mca_iomap
[pos1
&0xf];
369 dev
->irq
= mca_irqmap
[(pos1
>>4)&0x7];
372 * XXX: Transciever selection is done
373 * differently on the MCA version.
374 * How to get it to select something
375 * other than external/AUI is currently
376 * unknown. This code is just for looks. -- ASF
378 if ((pos0
& 0x7) == 0x1)
380 else if ((pos0
& 0x7) == 0x5) {
387 mca_set_adapter_name(slot
, "Intel EtherExpress 16 MCA");
388 mca_set_adapter_procfn(slot
, NULL
, dev
);
389 mca_mark_as_used(slot
);
396 if (!request_region(ioaddr
, EEXP_IO_EXTENT
, "EtherExpress"))
398 err
= eexp_hw_probe(dev
,ioaddr
);
399 release_region(ioaddr
, EEXP_IO_EXTENT
);
404 for (port
=&ports
[0] ; *port
; port
++ )
406 unsigned short sum
= 0;
408 if (!request_region(*port
, EEXP_IO_EXTENT
, "EtherExpress"))
410 for ( i
=0 ; i
<4 ; i
++ )
413 t
= inb(*port
+ ID_PORT
);
414 sum
|= (t
>>4) << ((t
& 0x03)<<2);
416 if (sum
==0xbaba && !eexp_hw_probe(dev
,*port
)) {
417 release_region(*port
, EEXP_IO_EXTENT
);
420 release_region(*port
, EEXP_IO_EXTENT
);
427 struct net_device
* __init
express_probe(int unit
)
429 struct net_device
*dev
= alloc_etherdev(sizeof(struct net_local
));
433 return ERR_PTR(-ENOMEM
);
435 sprintf(dev
->name
, "eth%d", unit
);
436 netdev_boot_setup_check(dev
);
438 err
= do_express_probe(dev
);
447 * open and initialize the adapter, ready for use
450 static int eexp_open(struct net_device
*dev
)
453 unsigned short ioaddr
= dev
->base_addr
;
454 struct net_local
*lp
= netdev_priv(dev
);
457 printk(KERN_DEBUG
"%s: eexp_open()\n", dev
->name
);
460 if (!dev
->irq
|| !irqrmap
[dev
->irq
])
463 ret
= request_irq(dev
->irq
,&eexp_irq
,0,dev
->name
,dev
);
466 if (!request_region(ioaddr
, EEXP_IO_EXTENT
, "EtherExpress")) {
467 printk(KERN_WARNING
"EtherExpress io port %x, is busy.\n"
471 if (!request_region(ioaddr
+0x4000, EEXP_IO_EXTENT
, "EtherExpress shadow")) {
472 printk(KERN_WARNING
"EtherExpress io port %x, is busy.\n"
476 if (!request_region(ioaddr
+0x8000, EEXP_IO_EXTENT
, "EtherExpress shadow")) {
477 printk(KERN_WARNING
"EtherExpress io port %x, is busy.\n"
481 if (!request_region(ioaddr
+0xc000, EEXP_IO_EXTENT
, "EtherExpress shadow")) {
482 printk(KERN_WARNING
"EtherExpress io port %x, is busy.\n"
488 printk("%s: forcing ASIC to 8-bit mode\n", dev
->name
);
489 outb(inb(dev
->base_addr
+Config
)&~4, dev
->base_addr
+Config
);
492 eexp_hw_init586(dev
);
493 netif_start_queue(dev
);
495 printk(KERN_DEBUG
"%s: leaving eexp_open()\n", dev
->name
);
500 release_region(ioaddr
+0x8000, EEXP_IO_EXTENT
);
502 release_region(ioaddr
+0x4000, EEXP_IO_EXTENT
);
504 release_region(ioaddr
, EEXP_IO_EXTENT
);
506 free_irq(dev
->irq
, dev
);
511 * close and disable the interface, leaving the 586 in reset.
514 static int eexp_close(struct net_device
*dev
)
516 unsigned short ioaddr
= dev
->base_addr
;
517 struct net_local
*lp
= netdev_priv(dev
);
521 netif_stop_queue(dev
);
523 outb(SIRQ_dis
|irqrmap
[irq
],ioaddr
+SET_IRQ
);
525 scb_command(dev
, SCB_CUsuspend
|SCB_RUsuspend
);
526 outb(0,ioaddr
+SIGNAL_CA
);
528 outb(i586_RST
,ioaddr
+EEPROM_Ctrl
);
529 release_region(ioaddr
, EEXP_IO_EXTENT
);
530 release_region(ioaddr
+0x4000, 16);
531 release_region(ioaddr
+0x8000, 16);
532 release_region(ioaddr
+0xc000, 16);
538 * Return interface stats
541 static struct net_device_stats
*eexp_stats(struct net_device
*dev
)
543 struct net_local
*lp
= netdev_priv(dev
);
549 * This gets called when a higher level thinks we are broken. Check that
550 * nothing has become jammed in the CU.
553 static void unstick_cu(struct net_device
*dev
)
555 struct net_local
*lp
= netdev_priv(dev
);
556 unsigned short ioaddr
= dev
->base_addr
;
560 if ((jiffies
- dev
->trans_start
)>50)
562 if (lp
->tx_link
==lp
->last_tx_restart
)
564 unsigned short boguscount
=200,rsst
;
565 printk(KERN_WARNING
"%s: Retransmit timed out, status %04x, resetting...\n",
566 dev
->name
, scb_status(dev
));
568 lp
->last_tx_restart
= 0;
569 scb_wrcbl(dev
, lp
->tx_link
);
570 scb_command(dev
, SCB_CUstart
);
571 outb(0,ioaddr
+SIGNAL_CA
);
572 while (!SCB_complete(rsst
=scb_status(dev
)))
577 printk(KERN_WARNING
"%s: Reset timed out status %04x, retrying...\n",
579 scb_wrcbl(dev
, lp
->tx_link
);
580 scb_command(dev
, SCB_CUstart
);
581 outb(0,ioaddr
+SIGNAL_CA
);
584 netif_wake_queue(dev
);
588 unsigned short status
= scb_status(dev
);
589 if (SCB_CUdead(status
))
591 unsigned short txstatus
= eexp_hw_lasttxstat(dev
);
592 printk(KERN_WARNING
"%s: Transmit timed out, CU not active status %04x %04x, restarting...\n",
593 dev
->name
, status
, txstatus
);
594 eexp_hw_txrestart(dev
);
598 unsigned short txstatus
= eexp_hw_lasttxstat(dev
);
599 if (netif_queue_stopped(dev
) && !txstatus
)
601 printk(KERN_WARNING
"%s: CU wedged, status %04x %04x, resetting...\n",
602 dev
->name
,status
,txstatus
);
603 eexp_hw_init586(dev
);
604 netif_wake_queue(dev
);
608 printk(KERN_WARNING
"%s: transmit timed out\n", dev
->name
);
616 if ((jiffies
-lp
->init_time
)>10)
618 unsigned short status
= scb_status(dev
);
619 printk(KERN_WARNING
"%s: i82586 startup timed out, status %04x, resetting...\n",
621 eexp_hw_init586(dev
);
622 netif_wake_queue(dev
);
627 static void eexp_timeout(struct net_device
*dev
)
629 struct net_local
*lp
= netdev_priv(dev
);
635 disable_irq(dev
->irq
);
638 * Best would be to use synchronize_irq(); spin_lock() here
639 * lets make it work first..
643 spin_lock_irqsave(&lp
->lock
, flags
);
646 status
= scb_status(dev
);
648 printk(KERN_INFO
"%s: transmit timed out, %s?\n", dev
->name
,
649 (SCB_complete(status
)?"lost interrupt":
651 lp
->stats
.tx_errors
++;
652 lp
->last_tx
= jiffies
;
653 if (!SCB_complete(status
)) {
654 scb_command(dev
, SCB_CUabort
);
655 outb(0,dev
->base_addr
+SIGNAL_CA
);
657 netif_wake_queue(dev
);
659 spin_unlock_irqrestore(&lp
->lock
, flags
);
664 * Called to transmit a packet, or to allow us to right ourselves
665 * if the kernel thinks we've died.
667 static int eexp_xmit(struct sk_buff
*buf
, struct net_device
*dev
)
669 struct net_local
*lp
= netdev_priv(dev
);
670 short length
= buf
->len
;
676 printk(KERN_DEBUG
"%s: eexp_xmit()\n", dev
->name
);
679 if (buf
->len
< ETH_ZLEN
) {
680 if (skb_padto(buf
, ETH_ZLEN
))
685 disable_irq(dev
->irq
);
688 * Best would be to use synchronize_irq(); spin_lock() here
689 * lets make it work first..
693 spin_lock_irqsave(&lp
->lock
, flags
);
697 unsigned short *data
= (unsigned short *)buf
->data
;
699 lp
->stats
.tx_bytes
+= length
;
701 eexp_hw_tx_pio(dev
,data
,length
);
705 spin_unlock_irqrestore(&lp
->lock
, flags
);
707 enable_irq(dev
->irq
);
712 * Handle an EtherExpress interrupt
713 * If we've finished initializing, start the RU and CU up.
714 * If we've already started, reap tx buffers, handle any received packets,
715 * check to make sure we've not become wedged.
719 * Handle an EtherExpress interrupt
720 * If we've finished initializing, start the RU and CU up.
721 * If we've already started, reap tx buffers, handle any received packets,
722 * check to make sure we've not become wedged.
725 static unsigned short eexp_start_irq(struct net_device
*dev
,
726 unsigned short status
)
728 unsigned short ack_cmd
= SCB_ack(status
);
729 struct net_local
*lp
= netdev_priv(dev
);
730 unsigned short ioaddr
= dev
->base_addr
;
731 if ((dev
->flags
& IFF_UP
) && !(lp
->started
& STARTED_CU
)) {
732 short diag_status
, tdr_status
;
733 while (SCB_CUstat(status
)==2)
734 status
= scb_status(dev
);
736 printk("%s: CU went non-active (status %04x)\n",
740 outw(CONF_DIAG_RESULT
& ~31, ioaddr
+ SM_PTR
);
741 diag_status
= inw(ioaddr
+ SHADOW(CONF_DIAG_RESULT
));
742 if (diag_status
& 1<<11) {
743 printk(KERN_WARNING
"%s: 82586 failed self-test\n",
745 } else if (!(diag_status
& 1<<13)) {
746 printk(KERN_WARNING
"%s: 82586 self-test failed to complete\n", dev
->name
);
749 outw(CONF_TDR_RESULT
& ~31, ioaddr
+ SM_PTR
);
750 tdr_status
= inw(ioaddr
+ SHADOW(CONF_TDR_RESULT
));
751 if (tdr_status
& (TDR_SHORT
|TDR_OPEN
)) {
752 printk(KERN_WARNING
"%s: TDR reports cable %s at %d tick%s\n", dev
->name
, (tdr_status
& TDR_SHORT
)?"short":"broken", tdr_status
& TDR_TIME
, ((tdr_status
& TDR_TIME
) != 1) ? "s" : "");
754 else if (tdr_status
& TDR_XCVRPROBLEM
) {
755 printk(KERN_WARNING
"%s: TDR reports transceiver problem\n", dev
->name
);
757 else if (tdr_status
& TDR_LINKOK
) {
759 printk(KERN_DEBUG
"%s: TDR reports link OK\n", dev
->name
);
762 printk("%s: TDR is ga-ga (status %04x)\n", dev
->name
,
766 lp
->started
|= STARTED_CU
;
767 scb_wrcbl(dev
, lp
->tx_link
);
768 /* if the RU isn't running, start it now */
769 if (!(lp
->started
& STARTED_RU
)) {
770 ack_cmd
|= SCB_RUstart
;
771 scb_wrrfa(dev
, lp
->rx_buf_start
);
772 lp
->rx_ptr
= lp
->rx_buf_start
;
773 lp
->started
|= STARTED_RU
;
775 ack_cmd
|= SCB_CUstart
| 0x2000;
778 if ((dev
->flags
& IFF_UP
) && !(lp
->started
& STARTED_RU
) && SCB_RUstat(status
)==4)
779 lp
->started
|=STARTED_RU
;
784 static void eexp_cmd_clear(struct net_device
*dev
)
786 unsigned long int oldtime
= jiffies
;
787 while (scb_rdcmd(dev
) && ((jiffies
-oldtime
)<10));
788 if (scb_rdcmd(dev
)) {
789 printk("%s: command didn't clear\n", dev
->name
);
793 static irqreturn_t
eexp_irq(int irq
, void *dev_info
, struct pt_regs
*regs
)
795 struct net_device
*dev
= dev_info
;
796 struct net_local
*lp
;
797 unsigned short ioaddr
,status
,ack_cmd
;
798 unsigned short old_read_ptr
, old_write_ptr
;
802 printk(KERN_WARNING
"eexpress: irq %d for unknown device\n",
807 lp
= netdev_priv(dev
);
808 ioaddr
= dev
->base_addr
;
810 spin_lock(&lp
->lock
);
812 old_read_ptr
= inw(ioaddr
+READ_PTR
);
813 old_write_ptr
= inw(ioaddr
+WRITE_PTR
);
815 outb(SIRQ_dis
|irqrmap
[irq
],ioaddr
+SET_IRQ
);
818 status
= scb_status(dev
);
821 printk(KERN_DEBUG
"%s: interrupt (status %x)\n", dev
->name
, status
);
824 if (lp
->started
== (STARTED_CU
| STARTED_RU
)) {
829 ack_cmd
= SCB_ack(status
);
830 scb_command(dev
, ack_cmd
);
831 outb(0,ioaddr
+SIGNAL_CA
);
835 if (SCB_complete(status
)) {
836 if (!eexp_hw_lasttxstat(dev
)) {
837 printk("%s: tx interrupt but no status\n", dev
->name
);
841 if (SCB_rxdframe(status
))
844 status
= scb_status(dev
);
845 } while (status
& 0xc000);
847 if (SCB_RUdead(status
))
849 printk(KERN_WARNING
"%s: RU stopped: status %04x\n",
852 printk(KERN_WARNING
"%s: cur_rfd=%04x, cur_rbd=%04x\n", dev
->name
, lp
->cur_rfd
, lp
->cur_rbd
);
853 outw(lp
->cur_rfd
, ioaddr
+READ_PTR
);
854 printk(KERN_WARNING
"%s: [%04x]\n", dev
->name
, inw(ioaddr
+DATAPORT
));
855 outw(lp
->cur_rfd
+6, ioaddr
+READ_PTR
);
856 printk(KERN_WARNING
"%s: rbd is %04x\n", dev
->name
, rbd
= inw(ioaddr
+DATAPORT
));
857 outw(rbd
, ioaddr
+READ_PTR
);
858 printk(KERN_WARNING
"%s: [%04x %04x] ", dev
->name
, inw(ioaddr
+DATAPORT
), inw(ioaddr
+DATAPORT
));
859 outw(rbd
+8, ioaddr
+READ_PTR
);
860 printk("[%04x]\n", inw(ioaddr
+DATAPORT
));
862 lp
->stats
.rx_errors
++;
866 lp
->cur_rfd
= lp
->first_rfd
;
868 scb_wrrfa(dev
, lp
->rx_buf_start
);
869 scb_command(dev
, SCB_RUstart
);
870 outb(0,ioaddr
+SIGNAL_CA
);
874 ack_cmd
= eexp_start_irq(dev
, status
);
876 ack_cmd
= SCB_ack(status
);
877 scb_command(dev
, ack_cmd
);
878 outb(0,ioaddr
+SIGNAL_CA
);
883 outb(SIRQ_en
|irqrmap
[irq
],ioaddr
+SET_IRQ
);
886 printk("%s: leaving eexp_irq()\n", dev
->name
);
888 outw(old_read_ptr
, ioaddr
+READ_PTR
);
889 outw(old_write_ptr
, ioaddr
+WRITE_PTR
);
891 spin_unlock(&lp
->lock
);
896 * Hardware access functions
900 * Set the cable type to use.
903 static void eexp_hw_set_interface(struct net_device
*dev
)
905 unsigned char oldval
= inb(dev
->base_addr
+ 0x300e);
907 switch (dev
->if_port
) {
914 outb(oldval
, dev
->base_addr
+0x300e);
919 * Check all the receive buffers, and hand any received packets
920 * to the upper levels. Basic sanity check on each frame
921 * descriptor, though we don't bother trying to fix broken ones.
924 static void eexp_hw_rx_pio(struct net_device
*dev
)
926 struct net_local
*lp
= netdev_priv(dev
);
927 unsigned short rx_block
= lp
->rx_ptr
;
928 unsigned short boguscount
= lp
->num_rx_bufs
;
929 unsigned short ioaddr
= dev
->base_addr
;
930 unsigned short status
;
933 printk(KERN_DEBUG
"%s: eexp_hw_rx()\n", dev
->name
);
937 unsigned short rfd_cmd
, rx_next
, pbuf
, pkt_len
;
939 outw(rx_block
, ioaddr
+ READ_PTR
);
940 status
= inw(ioaddr
+ DATAPORT
);
944 rfd_cmd
= inw(ioaddr
+ DATAPORT
);
945 rx_next
= inw(ioaddr
+ DATAPORT
);
946 pbuf
= inw(ioaddr
+ DATAPORT
);
948 outw(pbuf
, ioaddr
+ READ_PTR
);
949 pkt_len
= inw(ioaddr
+ DATAPORT
);
953 printk(KERN_WARNING
"%s: rfd_cmd not zero:0x%04x\n",
957 else if (pbuf
!=rx_block
+0x16)
959 printk(KERN_WARNING
"%s: rfd and rbd out of sync 0x%04x 0x%04x\n",
960 dev
->name
, rx_block
+0x16, pbuf
);
963 else if ((pkt_len
& 0xc000)!=0xc000)
965 printk(KERN_WARNING
"%s: EOF or F not set on received buffer (%04x)\n",
966 dev
->name
, pkt_len
& 0xc000);
969 else if (!FD_OK(status
))
971 lp
->stats
.rx_errors
++;
973 lp
->stats
.rx_crc_errors
++;
974 if (FD_Align(status
))
975 lp
->stats
.rx_frame_errors
++;
976 if (FD_Resrc(status
))
977 lp
->stats
.rx_fifo_errors
++;
979 lp
->stats
.rx_over_errors
++;
980 if (FD_Short(status
))
981 lp
->stats
.rx_length_errors
++;
987 skb
= dev_alloc_skb(pkt_len
+16);
990 printk(KERN_WARNING
"%s: Memory squeeze, dropping packet\n",dev
->name
);
991 lp
->stats
.rx_dropped
++;
996 outw(pbuf
+10, ioaddr
+READ_PTR
);
997 insw(ioaddr
+DATAPORT
, skb_put(skb
,pkt_len
),(pkt_len
+1)>>1);
998 skb
->protocol
= eth_type_trans(skb
,dev
);
1000 dev
->last_rx
= jiffies
;
1001 lp
->stats
.rx_packets
++;
1002 lp
->stats
.rx_bytes
+= pkt_len
;
1004 outw(rx_block
, ioaddr
+WRITE_PTR
);
1005 outw(0, ioaddr
+DATAPORT
);
1006 outw(0, ioaddr
+DATAPORT
);
1009 } while (FD_Done(status
) && boguscount
--);
1010 lp
->rx_ptr
= rx_block
;
1014 * Hand a packet to the card for transmission
1015 * If we get here, we MUST have already checked
1016 * to make sure there is room in the transmit
1020 static void eexp_hw_tx_pio(struct net_device
*dev
, unsigned short *buf
,
1023 struct net_local
*lp
= netdev_priv(dev
);
1024 unsigned short ioaddr
= dev
->base_addr
;
1026 if (LOCKUP16
|| lp
->width
) {
1027 /* Stop the CU so that there is no chance that it
1028 jumps off to a bogus address while we are writing the
1029 pointer to the next transmit packet in 8-bit mode --
1030 this eliminates the "CU wedged" errors in 8-bit mode.
1031 (Zoltan Szilagyi 10-12-96) */
1032 scb_command(dev
, SCB_CUsuspend
);
1033 outw(0xFFFF, ioaddr
+SIGNAL_CA
);
1036 outw(lp
->tx_head
, ioaddr
+ WRITE_PTR
);
1038 outw(0x0000, ioaddr
+ DATAPORT
);
1039 outw(Cmd_INT
|Cmd_Xmit
, ioaddr
+ DATAPORT
);
1040 outw(lp
->tx_head
+0x08, ioaddr
+ DATAPORT
);
1041 outw(lp
->tx_head
+0x0e, ioaddr
+ DATAPORT
);
1043 outw(0x0000, ioaddr
+ DATAPORT
);
1044 outw(0x0000, ioaddr
+ DATAPORT
);
1045 outw(lp
->tx_head
+0x08, ioaddr
+ DATAPORT
);
1047 outw(0x8000|len
, ioaddr
+ DATAPORT
);
1048 outw(-1, ioaddr
+ DATAPORT
);
1049 outw(lp
->tx_head
+0x16, ioaddr
+ DATAPORT
);
1050 outw(0, ioaddr
+ DATAPORT
);
1052 outsw(ioaddr
+ DATAPORT
, buf
, (len
+1)>>1);
1054 outw(lp
->tx_tail
+0xc, ioaddr
+ WRITE_PTR
);
1055 outw(lp
->tx_head
, ioaddr
+ DATAPORT
);
1057 dev
->trans_start
= jiffies
;
1058 lp
->tx_tail
= lp
->tx_head
;
1059 if (lp
->tx_head
==TX_BUF_START
+((lp
->num_tx_bufs
-1)*TX_BUF_SIZE
))
1060 lp
->tx_head
= TX_BUF_START
;
1062 lp
->tx_head
+= TX_BUF_SIZE
;
1063 if (lp
->tx_head
!= lp
->tx_reap
)
1064 netif_wake_queue(dev
);
1066 if (LOCKUP16
|| lp
->width
) {
1067 /* Restart the CU so that the packet can actually
1068 be transmitted. (Zoltan Szilagyi 10-12-96) */
1069 scb_command(dev
, SCB_CUresume
);
1070 outw(0xFFFF, ioaddr
+SIGNAL_CA
);
1073 lp
->stats
.tx_packets
++;
1074 lp
->last_tx
= jiffies
;
1078 * Sanity check the suspected EtherExpress card
1079 * Read hardware address, reset card, size memory and initialize buffer
1080 * memory pointers. These are held in dev->priv, in case someone has more
1081 * than one card in a machine.
1084 static int __init
eexp_hw_probe(struct net_device
*dev
, unsigned short ioaddr
)
1086 unsigned short hw_addr
[3];
1087 unsigned char buswidth
;
1088 unsigned int memory_size
;
1090 unsigned short xsum
= 0;
1091 struct net_local
*lp
= netdev_priv(dev
);
1093 printk("%s: EtherExpress 16 at %#x ",dev
->name
,ioaddr
);
1095 outb(ASIC_RST
, ioaddr
+EEPROM_Ctrl
);
1096 outb(0, ioaddr
+EEPROM_Ctrl
);
1098 outb(i586_RST
, ioaddr
+EEPROM_Ctrl
);
1100 hw_addr
[0] = eexp_hw_readeeprom(ioaddr
,2);
1101 hw_addr
[1] = eexp_hw_readeeprom(ioaddr
,3);
1102 hw_addr
[2] = eexp_hw_readeeprom(ioaddr
,4);
1104 /* Standard Address or Compaq LTE Address */
1105 if (!((hw_addr
[2]==0x00aa && ((hw_addr
[1] & 0xff00)==0x0000)) ||
1106 (hw_addr
[2]==0x0080 && ((hw_addr
[1] & 0xff00)==0x5F00))))
1108 printk(" rejected: invalid address %04x%04x%04x\n",
1109 hw_addr
[2],hw_addr
[1],hw_addr
[0]);
1113 /* Calculate the EEPROM checksum. Carry on anyway if it's bad,
1116 for (i
= 0; i
< 64; i
++)
1117 xsum
+= eexp_hw_readeeprom(ioaddr
, i
);
1119 printk(" (bad EEPROM xsum 0x%02x)", xsum
);
1121 dev
->base_addr
= ioaddr
;
1122 for ( i
=0 ; i
<6 ; i
++ )
1123 dev
->dev_addr
[i
] = ((unsigned char *)hw_addr
)[5-i
];
1126 static char irqmap
[]={0, 9, 3, 4, 5, 10, 11, 0};
1127 unsigned short setupval
= eexp_hw_readeeprom(ioaddr
,0);
1129 /* Use the IRQ from EEPROM if none was given */
1131 dev
->irq
= irqmap
[setupval
>>13];
1133 if (dev
->if_port
== 0xff) {
1134 dev
->if_port
= !(setupval
& 0x1000) ? AUI
:
1135 eexp_hw_readeeprom(ioaddr
,5) & 0x1 ? TPE
: BNC
;
1138 buswidth
= !((setupval
& 0x400) >> 10);
1141 memset(lp
, 0, sizeof(struct net_local
));
1142 spin_lock_init(&lp
->lock
);
1144 printk("(IRQ %d, %s connector, %d-bit bus", dev
->irq
,
1145 eexp_ifmap
[dev
->if_port
], buswidth
?8:16);
1147 if (!request_region(dev
->base_addr
+ 0x300e, 1, "EtherExpress"))
1150 eexp_hw_set_interface(dev
);
1152 release_region(dev
->base_addr
+ 0x300e, 1);
1154 /* Find out how much RAM we have on the card */
1155 outw(0, dev
->base_addr
+ WRITE_PTR
);
1156 for (i
= 0; i
< 32768; i
++)
1157 outw(0, dev
->base_addr
+ DATAPORT
);
1159 for (memory_size
= 0; memory_size
< 64; memory_size
++)
1161 outw(memory_size
<<10, dev
->base_addr
+ READ_PTR
);
1162 if (inw(dev
->base_addr
+DATAPORT
))
1164 outw(memory_size
<<10, dev
->base_addr
+ WRITE_PTR
);
1165 outw(memory_size
| 0x5000, dev
->base_addr
+DATAPORT
);
1166 outw(memory_size
<<10, dev
->base_addr
+ READ_PTR
);
1167 if (inw(dev
->base_addr
+DATAPORT
) != (memory_size
| 0x5000))
1171 /* Sort out the number of buffers. We may have 16, 32, 48 or 64k
1172 * of RAM to play with.
1174 lp
->num_tx_bufs
= 4;
1175 lp
->rx_buf_end
= 0x3ff6;
1176 switch (memory_size
)
1179 lp
->rx_buf_end
+= 0x4000;
1181 lp
->num_tx_bufs
+= 4;
1182 lp
->rx_buf_end
+= 0x4000;
1184 lp
->rx_buf_end
+= 0x4000;
1186 printk(", %dk RAM)\n", memory_size
);
1189 printk(") bad memory size (%dk).\n", memory_size
);
1194 lp
->rx_buf_start
= TX_BUF_START
+ (lp
->num_tx_bufs
*TX_BUF_SIZE
);
1195 lp
->width
= buswidth
;
1197 dev
->open
= eexp_open
;
1198 dev
->stop
= eexp_close
;
1199 dev
->hard_start_xmit
= eexp_xmit
;
1200 dev
->get_stats
= eexp_stats
;
1201 dev
->set_multicast_list
= &eexp_set_multicast
;
1202 dev
->tx_timeout
= eexp_timeout
;
1203 dev
->watchdog_timeo
= 2*HZ
;
1205 return register_netdev(dev
);
1209 * Read a word from the EtherExpress on-board serial EEPROM.
1210 * The EEPROM contains 64 words of 16 bits.
1212 static unsigned short __init
eexp_hw_readeeprom(unsigned short ioaddr
,
1213 unsigned char location
)
1215 unsigned short cmd
= 0x180|(location
&0x7f);
1216 unsigned short rval
= 0,wval
= EC_CS
|i586_RST
;
1219 outb(EC_CS
|i586_RST
,ioaddr
+EEPROM_Ctrl
);
1220 for (i
=0x100 ; i
; i
>>=1 )
1227 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1228 outb(wval
|EC_Clk
,ioaddr
+EEPROM_Ctrl
);
1230 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1234 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1235 for (i
=0x8000 ; i
; i
>>=1 )
1237 outb(wval
|EC_Clk
,ioaddr
+EEPROM_Ctrl
);
1239 if (inb(ioaddr
+EEPROM_Ctrl
)&EC_Rd
)
1241 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1245 outb(wval
|EC_Clk
,ioaddr
+EEPROM_Ctrl
);
1247 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1253 * Reap tx buffers and return last transmit status.
1254 * if ==0 then either:
1255 * a) we're not transmitting anything, so why are we here?
1257 * otherwise, Stat_Busy(return) means we've still got some packets
1258 * to transmit, Stat_Done(return) means our buffers should be empty
1262 static unsigned short eexp_hw_lasttxstat(struct net_device
*dev
)
1264 struct net_local
*lp
= netdev_priv(dev
);
1265 unsigned short tx_block
= lp
->tx_reap
;
1266 unsigned short status
;
1268 if (!netif_queue_stopped(dev
) && lp
->tx_head
==lp
->tx_reap
)
1273 outw(tx_block
& ~31, dev
->base_addr
+ SM_PTR
);
1274 status
= inw(dev
->base_addr
+ SHADOW(tx_block
));
1275 if (!Stat_Done(status
))
1277 lp
->tx_link
= tx_block
;
1282 lp
->last_tx_restart
= 0;
1283 lp
->stats
.collisions
+= Stat_NoColl(status
);
1284 if (!Stat_OK(status
))
1286 char *whatsup
= NULL
;
1287 lp
->stats
.tx_errors
++;
1288 if (Stat_Abort(status
))
1289 lp
->stats
.tx_aborted_errors
++;
1290 if (Stat_TNoCar(status
)) {
1291 whatsup
= "aborted, no carrier";
1292 lp
->stats
.tx_carrier_errors
++;
1294 if (Stat_TNoCTS(status
)) {
1295 whatsup
= "aborted, lost CTS";
1296 lp
->stats
.tx_carrier_errors
++;
1298 if (Stat_TNoDMA(status
)) {
1299 whatsup
= "FIFO underran";
1300 lp
->stats
.tx_fifo_errors
++;
1302 if (Stat_TXColl(status
)) {
1303 whatsup
= "aborted, too many collisions";
1304 lp
->stats
.tx_aborted_errors
++;
1307 printk(KERN_INFO
"%s: transmit %s\n",
1308 dev
->name
, whatsup
);
1311 lp
->stats
.tx_packets
++;
1313 if (tx_block
== TX_BUF_START
+((lp
->num_tx_bufs
-1)*TX_BUF_SIZE
))
1314 lp
->tx_reap
= tx_block
= TX_BUF_START
;
1316 lp
->tx_reap
= tx_block
+= TX_BUF_SIZE
;
1317 netif_wake_queue(dev
);
1319 while (lp
->tx_reap
!= lp
->tx_head
);
1321 lp
->tx_link
= lp
->tx_tail
+ 0x08;
1327 * This should never happen. It is called when some higher routine detects
1328 * that the CU has stopped, to try to restart it from the last packet we knew
1329 * we were working on, or the idle loop if we had finished for the time.
1332 static void eexp_hw_txrestart(struct net_device
*dev
)
1334 struct net_local
*lp
= netdev_priv(dev
);
1335 unsigned short ioaddr
= dev
->base_addr
;
1337 lp
->last_tx_restart
= lp
->tx_link
;
1338 scb_wrcbl(dev
, lp
->tx_link
);
1339 scb_command(dev
, SCB_CUstart
);
1340 outb(0,ioaddr
+SIGNAL_CA
);
1343 unsigned short boguscount
=50,failcount
=5;
1344 while (!scb_status(dev
))
1350 printk(KERN_WARNING
"%s: CU start timed out, status %04x, cmd %04x\n", dev
->name
, scb_status(dev
), scb_rdcmd(dev
));
1351 scb_wrcbl(dev
, lp
->tx_link
);
1352 scb_command(dev
, SCB_CUstart
);
1353 outb(0,ioaddr
+SIGNAL_CA
);
1358 printk(KERN_WARNING
"%s: Failed to restart CU, resetting board...\n",dev
->name
);
1359 eexp_hw_init586(dev
);
1360 netif_wake_queue(dev
);
1369 * Writes down the list of transmit buffers into card memory. Each
1370 * entry consists of an 82586 transmit command, followed by a jump
1371 * pointing to itself. When we want to transmit a packet, we write
1372 * the data into the appropriate transmit buffer and then modify the
1373 * preceding jump to point at the new transmit command. This means that
1374 * the 586 command unit is continuously active.
1377 static void eexp_hw_txinit(struct net_device
*dev
)
1379 struct net_local
*lp
= netdev_priv(dev
);
1380 unsigned short tx_block
= TX_BUF_START
;
1381 unsigned short curtbuf
;
1382 unsigned short ioaddr
= dev
->base_addr
;
1384 for ( curtbuf
=0 ; curtbuf
<lp
->num_tx_bufs
; curtbuf
++ )
1386 outw(tx_block
, ioaddr
+ WRITE_PTR
);
1388 outw(0x0000, ioaddr
+ DATAPORT
);
1389 outw(Cmd_INT
|Cmd_Xmit
, ioaddr
+ DATAPORT
);
1390 outw(tx_block
+0x08, ioaddr
+ DATAPORT
);
1391 outw(tx_block
+0x0e, ioaddr
+ DATAPORT
);
1393 outw(0x0000, ioaddr
+ DATAPORT
);
1394 outw(0x0000, ioaddr
+ DATAPORT
);
1395 outw(tx_block
+0x08, ioaddr
+ DATAPORT
);
1397 outw(0x8000, ioaddr
+ DATAPORT
);
1398 outw(-1, ioaddr
+ DATAPORT
);
1399 outw(tx_block
+0x16, ioaddr
+ DATAPORT
);
1400 outw(0x0000, ioaddr
+ DATAPORT
);
1402 tx_block
+= TX_BUF_SIZE
;
1404 lp
->tx_head
= TX_BUF_START
;
1405 lp
->tx_reap
= TX_BUF_START
;
1406 lp
->tx_tail
= tx_block
- TX_BUF_SIZE
;
1407 lp
->tx_link
= lp
->tx_tail
+ 0x08;
1408 lp
->rx_buf_start
= tx_block
;
1413 * Write the circular list of receive buffer descriptors to card memory.
1414 * The end of the list isn't marked, which means that the 82586 receive
1415 * unit will loop until buffers become available (this avoids it giving us
1416 * "out of resources" messages).
1419 static void eexp_hw_rxinit(struct net_device
*dev
)
1421 struct net_local
*lp
= netdev_priv(dev
);
1422 unsigned short rx_block
= lp
->rx_buf_start
;
1423 unsigned short ioaddr
= dev
->base_addr
;
1425 lp
->num_rx_bufs
= 0;
1426 lp
->rx_first
= lp
->rx_ptr
= rx_block
;
1431 outw(rx_block
, ioaddr
+ WRITE_PTR
);
1433 outw(0, ioaddr
+ DATAPORT
); outw(0, ioaddr
+DATAPORT
);
1434 outw(rx_block
+ RX_BUF_SIZE
, ioaddr
+DATAPORT
);
1435 outw(0xffff, ioaddr
+DATAPORT
);
1437 outw(0x0000, ioaddr
+DATAPORT
);
1438 outw(0xdead, ioaddr
+DATAPORT
);
1439 outw(0xdead, ioaddr
+DATAPORT
);
1440 outw(0xdead, ioaddr
+DATAPORT
);
1441 outw(0xdead, ioaddr
+DATAPORT
);
1442 outw(0xdead, ioaddr
+DATAPORT
);
1443 outw(0xdead, ioaddr
+DATAPORT
);
1445 outw(0x0000, ioaddr
+DATAPORT
);
1446 outw(rx_block
+ RX_BUF_SIZE
+ 0x16, ioaddr
+DATAPORT
);
1447 outw(rx_block
+ 0x20, ioaddr
+DATAPORT
);
1448 outw(0, ioaddr
+DATAPORT
);
1449 outw(RX_BUF_SIZE
-0x20, ioaddr
+DATAPORT
);
1451 lp
->rx_last
= rx_block
;
1452 rx_block
+= RX_BUF_SIZE
;
1453 } while (rx_block
<= lp
->rx_buf_end
-RX_BUF_SIZE
);
1456 /* Make first Rx frame descriptor point to first Rx buffer
1458 outw(lp
->rx_first
+ 6, ioaddr
+WRITE_PTR
);
1459 outw(lp
->rx_first
+ 0x16, ioaddr
+DATAPORT
);
1461 /* Close Rx frame descriptor ring */
1462 outw(lp
->rx_last
+ 4, ioaddr
+WRITE_PTR
);
1463 outw(lp
->rx_first
, ioaddr
+DATAPORT
);
1465 /* Close Rx buffer descriptor ring */
1466 outw(lp
->rx_last
+ 0x16 + 2, ioaddr
+WRITE_PTR
);
1467 outw(lp
->rx_first
+ 0x16, ioaddr
+DATAPORT
);
1472 * Un-reset the 586, and start the configuration sequence. We don't wait for
1473 * this to finish, but allow the interrupt handler to start the CU and RU for
1474 * us. We can't start the receive/transmission system up before we know that
1475 * the hardware is configured correctly.
1478 static void eexp_hw_init586(struct net_device
*dev
)
1480 struct net_local
*lp
= netdev_priv(dev
);
1481 unsigned short ioaddr
= dev
->base_addr
;
1485 printk("%s: eexp_hw_init586()\n", dev
->name
);
1492 outb(SIRQ_dis
|irqrmap
[dev
->irq
],ioaddr
+SET_IRQ
);
1494 /* Download the startup code */
1495 outw(lp
->rx_buf_end
& ~31, ioaddr
+ SM_PTR
);
1496 outw(lp
->width
?0x0001:0x0000, ioaddr
+ 0x8006);
1497 outw(0x0000, ioaddr
+ 0x8008);
1498 outw(0x0000, ioaddr
+ 0x800a);
1499 outw(0x0000, ioaddr
+ 0x800c);
1500 outw(0x0000, ioaddr
+ 0x800e);
1502 for (i
= 0; i
< (sizeof(start_code
)); i
+=32) {
1504 outw(i
, ioaddr
+ SM_PTR
);
1505 for (j
= 0; j
< 16; j
+=2)
1506 outw(start_code
[(i
+j
)/2],
1508 for (j
= 0; j
< 16; j
+=2)
1509 outw(start_code
[(i
+j
+16)/2],
1513 /* Do we want promiscuous mode or multicast? */
1514 outw(CONF_PROMISC
& ~31, ioaddr
+SM_PTR
);
1515 i
= inw(ioaddr
+SHADOW(CONF_PROMISC
));
1516 outw((dev
->flags
& IFF_PROMISC
)?(i
|1):(i
& ~1),
1517 ioaddr
+SHADOW(CONF_PROMISC
));
1518 lp
->was_promisc
= dev
->flags
& IFF_PROMISC
;
1520 eexp_setup_filter(dev
);
1523 /* Write our hardware address */
1524 outw(CONF_HWADDR
& ~31, ioaddr
+SM_PTR
);
1525 outw(((unsigned short *)dev
->dev_addr
)[0], ioaddr
+SHADOW(CONF_HWADDR
));
1526 outw(((unsigned short *)dev
->dev_addr
)[1],
1527 ioaddr
+SHADOW(CONF_HWADDR
+2));
1528 outw(((unsigned short *)dev
->dev_addr
)[2],
1529 ioaddr
+SHADOW(CONF_HWADDR
+4));
1531 eexp_hw_txinit(dev
);
1532 eexp_hw_rxinit(dev
);
1534 outb(0,ioaddr
+EEPROM_Ctrl
);
1537 scb_command(dev
, 0xf000);
1538 outb(0,ioaddr
+SIGNAL_CA
);
1540 outw(0, ioaddr
+SM_PTR
);
1543 unsigned short rboguscount
=50,rfailcount
=5;
1544 while (inw(ioaddr
+0x4000))
1548 printk(KERN_WARNING
"%s: i82586 reset timed out, kicking...\n",
1550 scb_command(dev
, 0);
1551 outb(0,ioaddr
+SIGNAL_CA
);
1555 printk(KERN_WARNING
"%s: i82586 not responding, giving up.\n",
1563 scb_wrcbl(dev
, CONF_LINK
);
1564 scb_command(dev
, 0xf000|SCB_CUstart
);
1565 outb(0,ioaddr
+SIGNAL_CA
);
1568 unsigned short iboguscount
=50,ifailcount
=5;
1569 while (!scb_status(dev
))
1575 printk(KERN_WARNING
"%s: i82586 initialization timed out, status %04x, cmd %04x\n",
1576 dev
->name
, scb_status(dev
), scb_rdcmd(dev
));
1577 scb_wrcbl(dev
, CONF_LINK
);
1578 scb_command(dev
, 0xf000|SCB_CUstart
);
1579 outb(0,ioaddr
+SIGNAL_CA
);
1584 printk(KERN_WARNING
"%s: Failed to initialize i82586, giving up.\n",dev
->name
);
1591 clear_loopback(dev
);
1592 outb(SIRQ_en
|irqrmap
[dev
->irq
],ioaddr
+SET_IRQ
);
1594 lp
->init_time
= jiffies
;
1596 printk("%s: leaving eexp_hw_init586()\n", dev
->name
);
1601 static void eexp_setup_filter(struct net_device
*dev
)
1603 struct dev_mc_list
*dmi
= dev
->mc_list
;
1604 unsigned short ioaddr
= dev
->base_addr
;
1605 int count
= dev
->mc_count
;
1608 printk(KERN_INFO
"%s: too many multicast addresses (%d)\n",
1613 outw(CONF_NR_MULTICAST
& ~31, ioaddr
+SM_PTR
);
1614 outw(count
, ioaddr
+SHADOW(CONF_NR_MULTICAST
));
1615 for (i
= 0; i
< count
; i
++) {
1616 unsigned short *data
= (unsigned short *)dmi
->dmi_addr
;
1618 printk(KERN_INFO
"%s: too few multicast addresses\n", dev
->name
);
1621 if (dmi
->dmi_addrlen
!= ETH_ALEN
) {
1622 printk(KERN_INFO
"%s: invalid multicast address length given.\n", dev
->name
);
1625 outw((CONF_MULTICAST
+(6*i
)) & ~31, ioaddr
+SM_PTR
);
1626 outw(data
[0], ioaddr
+SHADOW(CONF_MULTICAST
+(6*i
)));
1627 outw((CONF_MULTICAST
+(6*i
)+2) & ~31, ioaddr
+SM_PTR
);
1628 outw(data
[1], ioaddr
+SHADOW(CONF_MULTICAST
+(6*i
)+2));
1629 outw((CONF_MULTICAST
+(6*i
)+4) & ~31, ioaddr
+SM_PTR
);
1630 outw(data
[2], ioaddr
+SHADOW(CONF_MULTICAST
+(6*i
)+4));
1635 * Set or clear the multicast filter for this adaptor.
1638 eexp_set_multicast(struct net_device
*dev
)
1640 unsigned short ioaddr
= dev
->base_addr
;
1641 struct net_local
*lp
= netdev_priv(dev
);
1643 if ((dev
->flags
& IFF_PROMISC
) != lp
->was_promisc
) {
1644 outw(CONF_PROMISC
& ~31, ioaddr
+SM_PTR
);
1645 i
= inw(ioaddr
+SHADOW(CONF_PROMISC
));
1646 outw((dev
->flags
& IFF_PROMISC
)?(i
|1):(i
& ~1),
1647 ioaddr
+SHADOW(CONF_PROMISC
));
1648 lp
->was_promisc
= dev
->flags
& IFF_PROMISC
;
1651 if (!(dev
->flags
& IFF_PROMISC
)) {
1652 eexp_setup_filter(dev
);
1653 if (lp
->old_mc_count
!= dev
->mc_count
) {
1655 lp
->old_mc_count
= dev
->mc_count
;
1660 scb_command(dev
, SCB_CUsuspend
);
1661 outb(0, ioaddr
+SIGNAL_CA
);
1662 outb(0, ioaddr
+SIGNAL_CA
);
1664 printk("%s: waiting for CU to go suspended\n", dev
->name
);
1667 while ((SCB_CUstat(scb_status(dev
)) == 2) &&
1668 ((jiffies
-oj
) < 2000));
1669 if (SCB_CUstat(scb_status(dev
)) == 2)
1670 printk("%s: warning, CU didn't stop\n", dev
->name
);
1671 lp
->started
&= ~(STARTED_CU
);
1672 scb_wrcbl(dev
, CONF_LINK
);
1673 scb_command(dev
, SCB_CUstart
);
1674 outb(0, ioaddr
+SIGNAL_CA
);
1685 #define EEXP_MAX_CARDS 4 /* max number of cards to support */
1687 static struct net_device
*dev_eexp
[EEXP_MAX_CARDS
];
1688 static int irq
[EEXP_MAX_CARDS
];
1689 static int io
[EEXP_MAX_CARDS
];
1691 module_param_array(io
, int, NULL
, 0);
1692 module_param_array(irq
, int, NULL
, 0);
1693 MODULE_PARM_DESC(io
, "EtherExpress 16 I/O base address(es)");
1694 MODULE_PARM_DESC(irq
, "EtherExpress 16 IRQ number(s)");
1695 MODULE_LICENSE("GPL");
1698 /* Ideally the user would give us io=, irq= for every card. If any parameters
1699 * are specified, we verify and then use them. If no parameters are given, we
1700 * autoprobe for one card only.
1702 int init_module(void)
1704 struct net_device
*dev
;
1705 int this_dev
, found
= 0;
1707 for (this_dev
= 0; this_dev
< EEXP_MAX_CARDS
; this_dev
++) {
1708 dev
= alloc_etherdev(sizeof(struct net_local
));
1709 dev
->irq
= irq
[this_dev
];
1710 dev
->base_addr
= io
[this_dev
];
1711 if (io
[this_dev
] == 0) {
1714 printk(KERN_NOTICE
"eexpress.c: Module autoprobe not recommended, give io=xx.\n");
1716 if (do_express_probe(dev
) == 0) {
1717 dev_eexp
[this_dev
] = dev
;
1721 printk(KERN_WARNING
"eexpress.c: Failed to register card at 0x%x.\n", io
[this_dev
]);
1730 void cleanup_module(void)
1734 for (this_dev
= 0; this_dev
< EEXP_MAX_CARDS
; this_dev
++) {
1735 struct net_device
*dev
= dev_eexp
[this_dev
];
1737 unregister_netdev(dev
);
1746 * c-file-style: "linux"