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/module.h>
101 #include <linux/kernel.h>
102 #include <linux/types.h>
103 #include <linux/fcntl.h>
104 #include <linux/interrupt.h>
105 #include <linux/ioport.h>
106 #include <linux/string.h>
107 #include <linux/in.h>
108 #include <linux/delay.h>
109 #include <linux/errno.h>
110 #include <linux/init.h>
111 #include <linux/netdevice.h>
112 #include <linux/etherdevice.h>
113 #include <linux/skbuff.h>
114 #include <linux/slab.h>
115 #include <linux/mca-legacy.h>
116 #include <linux/spinlock.h>
117 #include <linux/bitops.h>
118 #include <linux/jiffies.h>
120 #include <asm/system.h>
128 #include "eexpress.h"
130 #define EEXP_IO_EXTENT 16
133 * Private data declarations
138 unsigned long last_tx
; /* jiffies when last transmit started */
139 unsigned long init_time
; /* jiffies when eexp_hw_init586 called */
140 unsigned short rx_first
; /* first rx buf, same as RX_BUF_START */
141 unsigned short rx_last
; /* last rx buf */
142 unsigned short rx_ptr
; /* first rx buf to look at */
143 unsigned short tx_head
; /* next free tx buf */
144 unsigned short tx_reap
; /* first in-use tx buf */
145 unsigned short tx_tail
; /* previous tx buf to tx_head */
146 unsigned short tx_link
; /* last known-executing tx buf */
147 unsigned short last_tx_restart
; /* set to tx_link when we
149 unsigned char started
;
150 unsigned short rx_buf_start
;
151 unsigned short rx_buf_end
;
152 unsigned short num_tx_bufs
;
153 unsigned short num_rx_bufs
;
154 unsigned char width
; /* 0 for 16bit, 1 for 8bit */
155 unsigned char was_promisc
;
156 unsigned char old_mc_count
;
160 /* This is the code and data that is downloaded to the EtherExpress card's
161 * memory at boot time.
164 static unsigned short start_code
[] = {
166 0x0001, /* ISCP: busy - cleared after reset */
167 0x0008,0x0000,0x0000, /* offset,address (lo,hi) of SCB */
169 0x0000,0x0000, /* SCB: status, commands */
170 0x0000,0x0000, /* links to first command block,
171 first receive descriptor */
172 0x0000,0x0000, /* CRC error, alignment error counts */
173 0x0000,0x0000, /* out of resources, overrun error counts */
175 0x0000,0x0000, /* pad */
178 /* 0x20 -- start of 82586 CU program */
179 #define CONF_LINK 0x20
181 0x0032, /* link to next command */
182 0x080c, /* 12 bytes follow : fifo threshold=8 */
183 0x2e40, /* don't rx bad frames
184 * SRDY/ARDY => ext. sync. : preamble len=8
185 * take addresses from data buffers
188 0x6000, /* default backoff method & priority
189 * interframe spacing = 0x60 */
190 0xf200, /* slot time=0x200
191 * max collision retry = 0xf */
192 #define CONF_PROMISC 0x2e
193 0x0000, /* no HDLC : normal CRC : enable broadcast
194 * disable promiscuous/multicast modes */
195 0x003c, /* minimum frame length = 60 octets) */
198 0x003e, /* link to next command */
199 #define CONF_HWADDR 0x38
200 0x0000,0x0000,0x0000, /* hardware address placed here */
203 0x0076, /* link to next command */
204 #define CONF_NR_MULTICAST 0x44
205 0x0000, /* number of multicast addresses */
206 #define CONF_MULTICAST 0x46
207 0x0000, 0x0000, 0x0000, /* some addresses */
208 0x0000, 0x0000, 0x0000,
209 0x0000, 0x0000, 0x0000,
210 0x0000, 0x0000, 0x0000,
211 0x0000, 0x0000, 0x0000,
212 0x0000, 0x0000, 0x0000,
213 0x0000, 0x0000, 0x0000,
214 0x0000, 0x0000, 0x0000,
216 #define CONF_DIAG_RESULT 0x76
218 0x007c, /* link to next command */
220 0x0000,Cmd_TDR
|Cmd_INT
,
222 #define CONF_TDR_RESULT 0x82
225 0x0000,Cmd_END
|Cmd_Nop
, /* end of configure sequence */
226 0x0084 /* dummy link */
229 /* maps irq number to EtherExpress magic value */
230 static char irqrmap
[] = { 0,0,1,2,3,4,0,0,0,1,5,6,0,0,0,0 };
232 #ifdef CONFIG_MCA_LEGACY
233 /* mapping of the first four bits of the second POS register */
234 static unsigned short mca_iomap
[] = {
235 0x270, 0x260, 0x250, 0x240, 0x230, 0x220, 0x210, 0x200,
236 0x370, 0x360, 0x350, 0x340, 0x330, 0x320, 0x310, 0x300
238 /* bits 5-7 of the second POS register */
239 static char mca_irqmap
[] = { 12, 9, 3, 4, 5, 10, 11, 15 };
243 * Prototypes for Linux interface
246 static int eexp_open(struct net_device
*dev
);
247 static int eexp_close(struct net_device
*dev
);
248 static void eexp_timeout(struct net_device
*dev
);
249 static int eexp_xmit(struct sk_buff
*buf
, struct net_device
*dev
);
251 static irqreturn_t
eexp_irq(int irq
, void *dev_addr
);
252 static void eexp_set_multicast(struct net_device
*dev
);
255 * Prototypes for hardware access functions
258 static void eexp_hw_rx_pio(struct net_device
*dev
);
259 static void eexp_hw_tx_pio(struct net_device
*dev
, unsigned short *buf
,
261 static int eexp_hw_probe(struct net_device
*dev
,unsigned short ioaddr
);
262 static unsigned short eexp_hw_readeeprom(unsigned short ioaddr
,
263 unsigned char location
);
265 static unsigned short eexp_hw_lasttxstat(struct net_device
*dev
);
266 static void eexp_hw_txrestart(struct net_device
*dev
);
268 static void eexp_hw_txinit (struct net_device
*dev
);
269 static void eexp_hw_rxinit (struct net_device
*dev
);
271 static void eexp_hw_init586 (struct net_device
*dev
);
272 static void eexp_setup_filter (struct net_device
*dev
);
274 static char *eexp_ifmap
[]={"AUI", "BNC", "RJ45"};
275 enum eexp_iftype
{AUI
=0, BNC
=1, TPE
=2};
281 * Primitive hardware access functions.
284 static inline unsigned short scb_status(struct net_device
*dev
)
286 return inw(dev
->base_addr
+ 0xc008);
289 static inline unsigned short scb_rdcmd(struct net_device
*dev
)
291 return inw(dev
->base_addr
+ 0xc00a);
294 static inline void scb_command(struct net_device
*dev
, unsigned short cmd
)
296 outw(cmd
, dev
->base_addr
+ 0xc00a);
299 static inline void scb_wrcbl(struct net_device
*dev
, unsigned short val
)
301 outw(val
, dev
->base_addr
+ 0xc00c);
304 static inline void scb_wrrfa(struct net_device
*dev
, unsigned short val
)
306 outw(val
, dev
->base_addr
+ 0xc00e);
309 static inline void set_loopback(struct net_device
*dev
)
311 outb(inb(dev
->base_addr
+ Config
) | 2, dev
->base_addr
+ Config
);
314 static inline void clear_loopback(struct net_device
*dev
)
316 outb(inb(dev
->base_addr
+ Config
) & ~2, dev
->base_addr
+ Config
);
319 static inline unsigned short int SHADOW(short int addr
)
322 if (addr
> 0xf) addr
+= 0x3ff0;
323 return addr
+ 0x4000;
331 * checks for presence of EtherExpress card
334 static int __init
do_express_probe(struct net_device
*dev
)
336 unsigned short *port
;
337 static unsigned short ports
[] = { 0x240,0x300,0x310,0x270,0x320,0x340,0 };
338 unsigned short ioaddr
= dev
->base_addr
;
339 int dev_irq
= dev
->irq
;
342 dev
->if_port
= 0xff; /* not set */
344 #ifdef CONFIG_MCA_LEGACY
349 * Only find one card at a time. Subsequent calls
350 * will find others, however, proper multicard MCA
351 * probing and setup can't be done with the
352 * old-style Space.c init routines. -- ASF
354 while (slot
!= MCA_NOTFOUND
) {
357 slot
= mca_find_unused_adapter(0x628B, slot
);
358 if (slot
== MCA_NOTFOUND
)
361 pos0
= mca_read_stored_pos(slot
, 2);
362 pos1
= mca_read_stored_pos(slot
, 3);
363 ioaddr
= mca_iomap
[pos1
&0xf];
365 dev
->irq
= mca_irqmap
[(pos1
>>4)&0x7];
368 * XXX: Transciever selection is done
369 * differently on the MCA version.
370 * How to get it to select something
371 * other than external/AUI is currently
372 * unknown. This code is just for looks. -- ASF
374 if ((pos0
& 0x7) == 0x1)
376 else if ((pos0
& 0x7) == 0x5) {
383 mca_set_adapter_name(slot
, "Intel EtherExpress 16 MCA");
384 mca_set_adapter_procfn(slot
, NULL
, dev
);
385 mca_mark_as_used(slot
);
392 if (!request_region(ioaddr
, EEXP_IO_EXTENT
, "EtherExpress"))
394 err
= eexp_hw_probe(dev
,ioaddr
);
395 release_region(ioaddr
, EEXP_IO_EXTENT
);
400 for (port
=&ports
[0] ; *port
; port
++ )
402 unsigned short sum
= 0;
404 if (!request_region(*port
, EEXP_IO_EXTENT
, "EtherExpress"))
406 for ( i
=0 ; i
<4 ; i
++ )
409 t
= inb(*port
+ ID_PORT
);
410 sum
|= (t
>>4) << ((t
& 0x03)<<2);
412 if (sum
==0xbaba && !eexp_hw_probe(dev
,*port
)) {
413 release_region(*port
, EEXP_IO_EXTENT
);
416 release_region(*port
, EEXP_IO_EXTENT
);
423 struct net_device
* __init
express_probe(int unit
)
425 struct net_device
*dev
= alloc_etherdev(sizeof(struct net_local
));
429 return ERR_PTR(-ENOMEM
);
431 sprintf(dev
->name
, "eth%d", unit
);
432 netdev_boot_setup_check(dev
);
434 err
= do_express_probe(dev
);
443 * open and initialize the adapter, ready for use
446 static int eexp_open(struct net_device
*dev
)
449 unsigned short ioaddr
= dev
->base_addr
;
450 struct net_local
*lp
= netdev_priv(dev
);
453 printk(KERN_DEBUG
"%s: eexp_open()\n", dev
->name
);
456 if (!dev
->irq
|| !irqrmap
[dev
->irq
])
459 ret
= request_irq(dev
->irq
, &eexp_irq
, 0, dev
->name
, dev
);
463 if (!request_region(ioaddr
, EEXP_IO_EXTENT
, "EtherExpress")) {
464 printk(KERN_WARNING
"EtherExpress io port %x, is busy.\n"
468 if (!request_region(ioaddr
+0x4000, EEXP_IO_EXTENT
, "EtherExpress shadow")) {
469 printk(KERN_WARNING
"EtherExpress io port %x, is busy.\n"
473 if (!request_region(ioaddr
+0x8000, EEXP_IO_EXTENT
, "EtherExpress shadow")) {
474 printk(KERN_WARNING
"EtherExpress io port %x, is busy.\n"
478 if (!request_region(ioaddr
+0xc000, EEXP_IO_EXTENT
, "EtherExpress shadow")) {
479 printk(KERN_WARNING
"EtherExpress io port %x, is busy.\n"
485 printk("%s: forcing ASIC to 8-bit mode\n", dev
->name
);
486 outb(inb(dev
->base_addr
+Config
)&~4, dev
->base_addr
+Config
);
489 eexp_hw_init586(dev
);
490 netif_start_queue(dev
);
492 printk(KERN_DEBUG
"%s: leaving eexp_open()\n", dev
->name
);
497 release_region(ioaddr
+0x8000, EEXP_IO_EXTENT
);
499 release_region(ioaddr
+0x4000, EEXP_IO_EXTENT
);
501 release_region(ioaddr
, EEXP_IO_EXTENT
);
503 free_irq(dev
->irq
, dev
);
508 * close and disable the interface, leaving the 586 in reset.
511 static int eexp_close(struct net_device
*dev
)
513 unsigned short ioaddr
= dev
->base_addr
;
514 struct net_local
*lp
= netdev_priv(dev
);
518 netif_stop_queue(dev
);
520 outb(SIRQ_dis
|irqrmap
[irq
],ioaddr
+SET_IRQ
);
522 scb_command(dev
, SCB_CUsuspend
|SCB_RUsuspend
);
523 outb(0,ioaddr
+SIGNAL_CA
);
525 outb(i586_RST
,ioaddr
+EEPROM_Ctrl
);
526 release_region(ioaddr
, EEXP_IO_EXTENT
);
527 release_region(ioaddr
+0x4000, 16);
528 release_region(ioaddr
+0x8000, 16);
529 release_region(ioaddr
+0xc000, 16);
535 * This gets called when a higher level thinks we are broken. Check that
536 * nothing has become jammed in the CU.
539 static void unstick_cu(struct net_device
*dev
)
541 struct net_local
*lp
= netdev_priv(dev
);
542 unsigned short ioaddr
= dev
->base_addr
;
546 if (time_after(jiffies
, dev
->trans_start
+ 50))
548 if (lp
->tx_link
==lp
->last_tx_restart
)
550 unsigned short boguscount
=200,rsst
;
551 printk(KERN_WARNING
"%s: Retransmit timed out, status %04x, resetting...\n",
552 dev
->name
, scb_status(dev
));
554 lp
->last_tx_restart
= 0;
555 scb_wrcbl(dev
, lp
->tx_link
);
556 scb_command(dev
, SCB_CUstart
);
557 outb(0,ioaddr
+SIGNAL_CA
);
558 while (!SCB_complete(rsst
=scb_status(dev
)))
563 printk(KERN_WARNING
"%s: Reset timed out status %04x, retrying...\n",
565 scb_wrcbl(dev
, lp
->tx_link
);
566 scb_command(dev
, SCB_CUstart
);
567 outb(0,ioaddr
+SIGNAL_CA
);
570 netif_wake_queue(dev
);
574 unsigned short status
= scb_status(dev
);
575 if (SCB_CUdead(status
))
577 unsigned short txstatus
= eexp_hw_lasttxstat(dev
);
578 printk(KERN_WARNING
"%s: Transmit timed out, CU not active status %04x %04x, restarting...\n",
579 dev
->name
, status
, txstatus
);
580 eexp_hw_txrestart(dev
);
584 unsigned short txstatus
= eexp_hw_lasttxstat(dev
);
585 if (netif_queue_stopped(dev
) && !txstatus
)
587 printk(KERN_WARNING
"%s: CU wedged, status %04x %04x, resetting...\n",
588 dev
->name
,status
,txstatus
);
589 eexp_hw_init586(dev
);
590 netif_wake_queue(dev
);
594 printk(KERN_WARNING
"%s: transmit timed out\n", dev
->name
);
602 if (time_after(jiffies
, lp
->init_time
+ 10))
604 unsigned short status
= scb_status(dev
);
605 printk(KERN_WARNING
"%s: i82586 startup timed out, status %04x, resetting...\n",
607 eexp_hw_init586(dev
);
608 netif_wake_queue(dev
);
613 static void eexp_timeout(struct net_device
*dev
)
615 struct net_local
*lp
= netdev_priv(dev
);
621 disable_irq(dev
->irq
);
624 * Best would be to use synchronize_irq(); spin_lock() here
625 * lets make it work first..
629 spin_lock_irqsave(&lp
->lock
, flags
);
632 status
= scb_status(dev
);
634 printk(KERN_INFO
"%s: transmit timed out, %s?\n", dev
->name
,
635 (SCB_complete(status
)?"lost interrupt":
637 dev
->stats
.tx_errors
++;
638 lp
->last_tx
= jiffies
;
639 if (!SCB_complete(status
)) {
640 scb_command(dev
, SCB_CUabort
);
641 outb(0,dev
->base_addr
+SIGNAL_CA
);
643 netif_wake_queue(dev
);
645 spin_unlock_irqrestore(&lp
->lock
, flags
);
650 * Called to transmit a packet, or to allow us to right ourselves
651 * if the kernel thinks we've died.
653 static int eexp_xmit(struct sk_buff
*buf
, struct net_device
*dev
)
655 short length
= buf
->len
;
657 struct net_local
*lp
= netdev_priv(dev
);
662 printk(KERN_DEBUG
"%s: eexp_xmit()\n", dev
->name
);
665 if (buf
->len
< ETH_ZLEN
) {
666 if (skb_padto(buf
, ETH_ZLEN
))
671 disable_irq(dev
->irq
);
674 * Best would be to use synchronize_irq(); spin_lock() here
675 * lets make it work first..
679 spin_lock_irqsave(&lp
->lock
, flags
);
683 unsigned short *data
= (unsigned short *)buf
->data
;
685 dev
->stats
.tx_bytes
+= length
;
687 eexp_hw_tx_pio(dev
,data
,length
);
691 spin_unlock_irqrestore(&lp
->lock
, flags
);
693 enable_irq(dev
->irq
);
698 * Handle an EtherExpress interrupt
699 * If we've finished initializing, start the RU and CU up.
700 * If we've already started, reap tx buffers, handle any received packets,
701 * check to make sure we've not become wedged.
704 static unsigned short eexp_start_irq(struct net_device
*dev
,
705 unsigned short status
)
707 unsigned short ack_cmd
= SCB_ack(status
);
708 struct net_local
*lp
= netdev_priv(dev
);
709 unsigned short ioaddr
= dev
->base_addr
;
710 if ((dev
->flags
& IFF_UP
) && !(lp
->started
& STARTED_CU
)) {
711 short diag_status
, tdr_status
;
712 while (SCB_CUstat(status
)==2)
713 status
= scb_status(dev
);
715 printk("%s: CU went non-active (status %04x)\n",
719 outw(CONF_DIAG_RESULT
& ~31, ioaddr
+ SM_PTR
);
720 diag_status
= inw(ioaddr
+ SHADOW(CONF_DIAG_RESULT
));
721 if (diag_status
& 1<<11) {
722 printk(KERN_WARNING
"%s: 82586 failed self-test\n",
724 } else if (!(diag_status
& 1<<13)) {
725 printk(KERN_WARNING
"%s: 82586 self-test failed to complete\n", dev
->name
);
728 outw(CONF_TDR_RESULT
& ~31, ioaddr
+ SM_PTR
);
729 tdr_status
= inw(ioaddr
+ SHADOW(CONF_TDR_RESULT
));
730 if (tdr_status
& (TDR_SHORT
|TDR_OPEN
)) {
731 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" : "");
733 else if (tdr_status
& TDR_XCVRPROBLEM
) {
734 printk(KERN_WARNING
"%s: TDR reports transceiver problem\n", dev
->name
);
736 else if (tdr_status
& TDR_LINKOK
) {
738 printk(KERN_DEBUG
"%s: TDR reports link OK\n", dev
->name
);
741 printk("%s: TDR is ga-ga (status %04x)\n", dev
->name
,
745 lp
->started
|= STARTED_CU
;
746 scb_wrcbl(dev
, lp
->tx_link
);
747 /* if the RU isn't running, start it now */
748 if (!(lp
->started
& STARTED_RU
)) {
749 ack_cmd
|= SCB_RUstart
;
750 scb_wrrfa(dev
, lp
->rx_buf_start
);
751 lp
->rx_ptr
= lp
->rx_buf_start
;
752 lp
->started
|= STARTED_RU
;
754 ack_cmd
|= SCB_CUstart
| 0x2000;
757 if ((dev
->flags
& IFF_UP
) && !(lp
->started
& STARTED_RU
) && SCB_RUstat(status
)==4)
758 lp
->started
|=STARTED_RU
;
763 static void eexp_cmd_clear(struct net_device
*dev
)
765 unsigned long int oldtime
= jiffies
;
766 while (scb_rdcmd(dev
) && (time_before(jiffies
, oldtime
+ 10)));
767 if (scb_rdcmd(dev
)) {
768 printk("%s: command didn't clear\n", dev
->name
);
772 static irqreturn_t
eexp_irq(int dummy
, void *dev_info
)
774 struct net_device
*dev
= dev_info
;
775 struct net_local
*lp
;
776 unsigned short ioaddr
,status
,ack_cmd
;
777 unsigned short old_read_ptr
, old_write_ptr
;
779 lp
= netdev_priv(dev
);
780 ioaddr
= dev
->base_addr
;
782 spin_lock(&lp
->lock
);
784 old_read_ptr
= inw(ioaddr
+READ_PTR
);
785 old_write_ptr
= inw(ioaddr
+WRITE_PTR
);
787 outb(SIRQ_dis
|irqrmap
[dev
->irq
],ioaddr
+SET_IRQ
);
790 status
= scb_status(dev
);
793 printk(KERN_DEBUG
"%s: interrupt (status %x)\n", dev
->name
, status
);
796 if (lp
->started
== (STARTED_CU
| STARTED_RU
)) {
801 ack_cmd
= SCB_ack(status
);
802 scb_command(dev
, ack_cmd
);
803 outb(0,ioaddr
+SIGNAL_CA
);
807 if (SCB_complete(status
)) {
808 if (!eexp_hw_lasttxstat(dev
)) {
809 printk("%s: tx interrupt but no status\n", dev
->name
);
813 if (SCB_rxdframe(status
))
816 status
= scb_status(dev
);
817 } while (status
& 0xc000);
819 if (SCB_RUdead(status
))
821 printk(KERN_WARNING
"%s: RU stopped: status %04x\n",
824 printk(KERN_WARNING
"%s: cur_rfd=%04x, cur_rbd=%04x\n", dev
->name
, lp
->cur_rfd
, lp
->cur_rbd
);
825 outw(lp
->cur_rfd
, ioaddr
+READ_PTR
);
826 printk(KERN_WARNING
"%s: [%04x]\n", dev
->name
, inw(ioaddr
+DATAPORT
));
827 outw(lp
->cur_rfd
+6, ioaddr
+READ_PTR
);
828 printk(KERN_WARNING
"%s: rbd is %04x\n", dev
->name
, rbd
= inw(ioaddr
+DATAPORT
));
829 outw(rbd
, ioaddr
+READ_PTR
);
830 printk(KERN_WARNING
"%s: [%04x %04x] ", dev
->name
, inw(ioaddr
+DATAPORT
), inw(ioaddr
+DATAPORT
));
831 outw(rbd
+8, ioaddr
+READ_PTR
);
832 printk("[%04x]\n", inw(ioaddr
+DATAPORT
));
834 dev
->stats
.rx_errors
++;
838 lp
->cur_rfd
= lp
->first_rfd
;
840 scb_wrrfa(dev
, lp
->rx_buf_start
);
841 scb_command(dev
, SCB_RUstart
);
842 outb(0,ioaddr
+SIGNAL_CA
);
846 ack_cmd
= eexp_start_irq(dev
, status
);
848 ack_cmd
= SCB_ack(status
);
849 scb_command(dev
, ack_cmd
);
850 outb(0,ioaddr
+SIGNAL_CA
);
855 outb(SIRQ_en
|irqrmap
[dev
->irq
],ioaddr
+SET_IRQ
);
858 printk("%s: leaving eexp_irq()\n", dev
->name
);
860 outw(old_read_ptr
, ioaddr
+READ_PTR
);
861 outw(old_write_ptr
, ioaddr
+WRITE_PTR
);
863 spin_unlock(&lp
->lock
);
868 * Hardware access functions
872 * Set the cable type to use.
875 static void eexp_hw_set_interface(struct net_device
*dev
)
877 unsigned char oldval
= inb(dev
->base_addr
+ 0x300e);
879 switch (dev
->if_port
) {
886 outb(oldval
, dev
->base_addr
+0x300e);
891 * Check all the receive buffers, and hand any received packets
892 * to the upper levels. Basic sanity check on each frame
893 * descriptor, though we don't bother trying to fix broken ones.
896 static void eexp_hw_rx_pio(struct net_device
*dev
)
898 struct net_local
*lp
= netdev_priv(dev
);
899 unsigned short rx_block
= lp
->rx_ptr
;
900 unsigned short boguscount
= lp
->num_rx_bufs
;
901 unsigned short ioaddr
= dev
->base_addr
;
902 unsigned short status
;
905 printk(KERN_DEBUG
"%s: eexp_hw_rx()\n", dev
->name
);
909 unsigned short rfd_cmd
, rx_next
, pbuf
, pkt_len
;
911 outw(rx_block
, ioaddr
+ READ_PTR
);
912 status
= inw(ioaddr
+ DATAPORT
);
916 rfd_cmd
= inw(ioaddr
+ DATAPORT
);
917 rx_next
= inw(ioaddr
+ DATAPORT
);
918 pbuf
= inw(ioaddr
+ DATAPORT
);
920 outw(pbuf
, ioaddr
+ READ_PTR
);
921 pkt_len
= inw(ioaddr
+ DATAPORT
);
925 printk(KERN_WARNING
"%s: rfd_cmd not zero:0x%04x\n",
929 else if (pbuf
!=rx_block
+0x16)
931 printk(KERN_WARNING
"%s: rfd and rbd out of sync 0x%04x 0x%04x\n",
932 dev
->name
, rx_block
+0x16, pbuf
);
935 else if ((pkt_len
& 0xc000)!=0xc000)
937 printk(KERN_WARNING
"%s: EOF or F not set on received buffer (%04x)\n",
938 dev
->name
, pkt_len
& 0xc000);
941 else if (!FD_OK(status
))
943 dev
->stats
.rx_errors
++;
945 dev
->stats
.rx_crc_errors
++;
946 if (FD_Align(status
))
947 dev
->stats
.rx_frame_errors
++;
948 if (FD_Resrc(status
))
949 dev
->stats
.rx_fifo_errors
++;
951 dev
->stats
.rx_over_errors
++;
952 if (FD_Short(status
))
953 dev
->stats
.rx_length_errors
++;
959 skb
= dev_alloc_skb(pkt_len
+16);
962 printk(KERN_WARNING
"%s: Memory squeeze, dropping packet\n",dev
->name
);
963 dev
->stats
.rx_dropped
++;
967 outw(pbuf
+10, ioaddr
+READ_PTR
);
968 insw(ioaddr
+DATAPORT
, skb_put(skb
,pkt_len
),(pkt_len
+1)>>1);
969 skb
->protocol
= eth_type_trans(skb
,dev
);
971 dev
->last_rx
= jiffies
;
972 dev
->stats
.rx_packets
++;
973 dev
->stats
.rx_bytes
+= pkt_len
;
975 outw(rx_block
, ioaddr
+WRITE_PTR
);
976 outw(0, ioaddr
+DATAPORT
);
977 outw(0, ioaddr
+DATAPORT
);
980 } while (FD_Done(status
) && boguscount
--);
981 lp
->rx_ptr
= rx_block
;
985 * Hand a packet to the card for transmission
986 * If we get here, we MUST have already checked
987 * to make sure there is room in the transmit
991 static void eexp_hw_tx_pio(struct net_device
*dev
, unsigned short *buf
,
994 struct net_local
*lp
= netdev_priv(dev
);
995 unsigned short ioaddr
= dev
->base_addr
;
997 if (LOCKUP16
|| lp
->width
) {
998 /* Stop the CU so that there is no chance that it
999 jumps off to a bogus address while we are writing the
1000 pointer to the next transmit packet in 8-bit mode --
1001 this eliminates the "CU wedged" errors in 8-bit mode.
1002 (Zoltan Szilagyi 10-12-96) */
1003 scb_command(dev
, SCB_CUsuspend
);
1004 outw(0xFFFF, ioaddr
+SIGNAL_CA
);
1007 outw(lp
->tx_head
, ioaddr
+ WRITE_PTR
);
1009 outw(0x0000, ioaddr
+ DATAPORT
);
1010 outw(Cmd_INT
|Cmd_Xmit
, ioaddr
+ DATAPORT
);
1011 outw(lp
->tx_head
+0x08, ioaddr
+ DATAPORT
);
1012 outw(lp
->tx_head
+0x0e, ioaddr
+ DATAPORT
);
1014 outw(0x0000, ioaddr
+ DATAPORT
);
1015 outw(0x0000, ioaddr
+ DATAPORT
);
1016 outw(lp
->tx_head
+0x08, ioaddr
+ DATAPORT
);
1018 outw(0x8000|len
, ioaddr
+ DATAPORT
);
1019 outw(-1, ioaddr
+ DATAPORT
);
1020 outw(lp
->tx_head
+0x16, ioaddr
+ DATAPORT
);
1021 outw(0, ioaddr
+ DATAPORT
);
1023 outsw(ioaddr
+ DATAPORT
, buf
, (len
+1)>>1);
1025 outw(lp
->tx_tail
+0xc, ioaddr
+ WRITE_PTR
);
1026 outw(lp
->tx_head
, ioaddr
+ DATAPORT
);
1028 dev
->trans_start
= jiffies
;
1029 lp
->tx_tail
= lp
->tx_head
;
1030 if (lp
->tx_head
==TX_BUF_START
+((lp
->num_tx_bufs
-1)*TX_BUF_SIZE
))
1031 lp
->tx_head
= TX_BUF_START
;
1033 lp
->tx_head
+= TX_BUF_SIZE
;
1034 if (lp
->tx_head
!= lp
->tx_reap
)
1035 netif_wake_queue(dev
);
1037 if (LOCKUP16
|| lp
->width
) {
1038 /* Restart the CU so that the packet can actually
1039 be transmitted. (Zoltan Szilagyi 10-12-96) */
1040 scb_command(dev
, SCB_CUresume
);
1041 outw(0xFFFF, ioaddr
+SIGNAL_CA
);
1044 dev
->stats
.tx_packets
++;
1045 lp
->last_tx
= jiffies
;
1049 * Sanity check the suspected EtherExpress card
1050 * Read hardware address, reset card, size memory and initialize buffer
1051 * memory pointers. These are held in dev->priv, in case someone has more
1052 * than one card in a machine.
1055 static int __init
eexp_hw_probe(struct net_device
*dev
, unsigned short ioaddr
)
1057 unsigned short hw_addr
[3];
1058 unsigned char buswidth
;
1059 unsigned int memory_size
;
1061 unsigned short xsum
= 0;
1062 struct net_local
*lp
= netdev_priv(dev
);
1064 printk("%s: EtherExpress 16 at %#x ",dev
->name
,ioaddr
);
1066 outb(ASIC_RST
, ioaddr
+EEPROM_Ctrl
);
1067 outb(0, ioaddr
+EEPROM_Ctrl
);
1069 outb(i586_RST
, ioaddr
+EEPROM_Ctrl
);
1071 hw_addr
[0] = eexp_hw_readeeprom(ioaddr
,2);
1072 hw_addr
[1] = eexp_hw_readeeprom(ioaddr
,3);
1073 hw_addr
[2] = eexp_hw_readeeprom(ioaddr
,4);
1075 /* Standard Address or Compaq LTE Address */
1076 if (!((hw_addr
[2]==0x00aa && ((hw_addr
[1] & 0xff00)==0x0000)) ||
1077 (hw_addr
[2]==0x0080 && ((hw_addr
[1] & 0xff00)==0x5F00))))
1079 printk(" rejected: invalid address %04x%04x%04x\n",
1080 hw_addr
[2],hw_addr
[1],hw_addr
[0]);
1084 /* Calculate the EEPROM checksum. Carry on anyway if it's bad,
1087 for (i
= 0; i
< 64; i
++)
1088 xsum
+= eexp_hw_readeeprom(ioaddr
, i
);
1090 printk(" (bad EEPROM xsum 0x%02x)", xsum
);
1092 dev
->base_addr
= ioaddr
;
1093 for ( i
=0 ; i
<6 ; i
++ )
1094 dev
->dev_addr
[i
] = ((unsigned char *)hw_addr
)[5-i
];
1097 static char irqmap
[]={0, 9, 3, 4, 5, 10, 11, 0};
1098 unsigned short setupval
= eexp_hw_readeeprom(ioaddr
,0);
1100 /* Use the IRQ from EEPROM if none was given */
1102 dev
->irq
= irqmap
[setupval
>>13];
1104 if (dev
->if_port
== 0xff) {
1105 dev
->if_port
= !(setupval
& 0x1000) ? AUI
:
1106 eexp_hw_readeeprom(ioaddr
,5) & 0x1 ? TPE
: BNC
;
1109 buswidth
= !((setupval
& 0x400) >> 10);
1112 memset(lp
, 0, sizeof(struct net_local
));
1113 spin_lock_init(&lp
->lock
);
1115 printk("(IRQ %d, %s connector, %d-bit bus", dev
->irq
,
1116 eexp_ifmap
[dev
->if_port
], buswidth
?8:16);
1118 if (!request_region(dev
->base_addr
+ 0x300e, 1, "EtherExpress"))
1121 eexp_hw_set_interface(dev
);
1123 release_region(dev
->base_addr
+ 0x300e, 1);
1125 /* Find out how much RAM we have on the card */
1126 outw(0, dev
->base_addr
+ WRITE_PTR
);
1127 for (i
= 0; i
< 32768; i
++)
1128 outw(0, dev
->base_addr
+ DATAPORT
);
1130 for (memory_size
= 0; memory_size
< 64; memory_size
++)
1132 outw(memory_size
<<10, dev
->base_addr
+ READ_PTR
);
1133 if (inw(dev
->base_addr
+DATAPORT
))
1135 outw(memory_size
<<10, dev
->base_addr
+ WRITE_PTR
);
1136 outw(memory_size
| 0x5000, dev
->base_addr
+DATAPORT
);
1137 outw(memory_size
<<10, dev
->base_addr
+ READ_PTR
);
1138 if (inw(dev
->base_addr
+DATAPORT
) != (memory_size
| 0x5000))
1142 /* Sort out the number of buffers. We may have 16, 32, 48 or 64k
1143 * of RAM to play with.
1145 lp
->num_tx_bufs
= 4;
1146 lp
->rx_buf_end
= 0x3ff6;
1147 switch (memory_size
)
1150 lp
->rx_buf_end
+= 0x4000;
1152 lp
->num_tx_bufs
+= 4;
1153 lp
->rx_buf_end
+= 0x4000;
1155 lp
->rx_buf_end
+= 0x4000;
1157 printk(", %dk RAM)\n", memory_size
);
1160 printk(") bad memory size (%dk).\n", memory_size
);
1165 lp
->rx_buf_start
= TX_BUF_START
+ (lp
->num_tx_bufs
*TX_BUF_SIZE
);
1166 lp
->width
= buswidth
;
1168 dev
->open
= eexp_open
;
1169 dev
->stop
= eexp_close
;
1170 dev
->hard_start_xmit
= eexp_xmit
;
1171 dev
->set_multicast_list
= &eexp_set_multicast
;
1172 dev
->tx_timeout
= eexp_timeout
;
1173 dev
->watchdog_timeo
= 2*HZ
;
1175 return register_netdev(dev
);
1179 * Read a word from the EtherExpress on-board serial EEPROM.
1180 * The EEPROM contains 64 words of 16 bits.
1182 static unsigned short __init
eexp_hw_readeeprom(unsigned short ioaddr
,
1183 unsigned char location
)
1185 unsigned short cmd
= 0x180|(location
&0x7f);
1186 unsigned short rval
= 0,wval
= EC_CS
|i586_RST
;
1189 outb(EC_CS
|i586_RST
,ioaddr
+EEPROM_Ctrl
);
1190 for (i
=0x100 ; i
; i
>>=1 )
1197 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1198 outb(wval
|EC_Clk
,ioaddr
+EEPROM_Ctrl
);
1200 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1204 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1205 for (i
=0x8000 ; i
; i
>>=1 )
1207 outb(wval
|EC_Clk
,ioaddr
+EEPROM_Ctrl
);
1209 if (inb(ioaddr
+EEPROM_Ctrl
)&EC_Rd
)
1211 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1215 outb(wval
|EC_Clk
,ioaddr
+EEPROM_Ctrl
);
1217 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1223 * Reap tx buffers and return last transmit status.
1224 * if ==0 then either:
1225 * a) we're not transmitting anything, so why are we here?
1227 * otherwise, Stat_Busy(return) means we've still got some packets
1228 * to transmit, Stat_Done(return) means our buffers should be empty
1232 static unsigned short eexp_hw_lasttxstat(struct net_device
*dev
)
1234 struct net_local
*lp
= netdev_priv(dev
);
1235 unsigned short tx_block
= lp
->tx_reap
;
1236 unsigned short status
;
1238 if (!netif_queue_stopped(dev
) && lp
->tx_head
==lp
->tx_reap
)
1243 outw(tx_block
& ~31, dev
->base_addr
+ SM_PTR
);
1244 status
= inw(dev
->base_addr
+ SHADOW(tx_block
));
1245 if (!Stat_Done(status
))
1247 lp
->tx_link
= tx_block
;
1252 lp
->last_tx_restart
= 0;
1253 dev
->stats
.collisions
+= Stat_NoColl(status
);
1254 if (!Stat_OK(status
))
1256 char *whatsup
= NULL
;
1257 dev
->stats
.tx_errors
++;
1258 if (Stat_Abort(status
))
1259 dev
->stats
.tx_aborted_errors
++;
1260 if (Stat_TNoCar(status
)) {
1261 whatsup
= "aborted, no carrier";
1262 dev
->stats
.tx_carrier_errors
++;
1264 if (Stat_TNoCTS(status
)) {
1265 whatsup
= "aborted, lost CTS";
1266 dev
->stats
.tx_carrier_errors
++;
1268 if (Stat_TNoDMA(status
)) {
1269 whatsup
= "FIFO underran";
1270 dev
->stats
.tx_fifo_errors
++;
1272 if (Stat_TXColl(status
)) {
1273 whatsup
= "aborted, too many collisions";
1274 dev
->stats
.tx_aborted_errors
++;
1277 printk(KERN_INFO
"%s: transmit %s\n",
1278 dev
->name
, whatsup
);
1281 dev
->stats
.tx_packets
++;
1283 if (tx_block
== TX_BUF_START
+((lp
->num_tx_bufs
-1)*TX_BUF_SIZE
))
1284 lp
->tx_reap
= tx_block
= TX_BUF_START
;
1286 lp
->tx_reap
= tx_block
+= TX_BUF_SIZE
;
1287 netif_wake_queue(dev
);
1289 while (lp
->tx_reap
!= lp
->tx_head
);
1291 lp
->tx_link
= lp
->tx_tail
+ 0x08;
1297 * This should never happen. It is called when some higher routine detects
1298 * that the CU has stopped, to try to restart it from the last packet we knew
1299 * we were working on, or the idle loop if we had finished for the time.
1302 static void eexp_hw_txrestart(struct net_device
*dev
)
1304 struct net_local
*lp
= netdev_priv(dev
);
1305 unsigned short ioaddr
= dev
->base_addr
;
1307 lp
->last_tx_restart
= lp
->tx_link
;
1308 scb_wrcbl(dev
, lp
->tx_link
);
1309 scb_command(dev
, SCB_CUstart
);
1310 outb(0,ioaddr
+SIGNAL_CA
);
1313 unsigned short boguscount
=50,failcount
=5;
1314 while (!scb_status(dev
))
1320 printk(KERN_WARNING
"%s: CU start timed out, status %04x, cmd %04x\n", dev
->name
, scb_status(dev
), scb_rdcmd(dev
));
1321 scb_wrcbl(dev
, lp
->tx_link
);
1322 scb_command(dev
, SCB_CUstart
);
1323 outb(0,ioaddr
+SIGNAL_CA
);
1328 printk(KERN_WARNING
"%s: Failed to restart CU, resetting board...\n",dev
->name
);
1329 eexp_hw_init586(dev
);
1330 netif_wake_queue(dev
);
1339 * Writes down the list of transmit buffers into card memory. Each
1340 * entry consists of an 82586 transmit command, followed by a jump
1341 * pointing to itself. When we want to transmit a packet, we write
1342 * the data into the appropriate transmit buffer and then modify the
1343 * preceding jump to point at the new transmit command. This means that
1344 * the 586 command unit is continuously active.
1347 static void eexp_hw_txinit(struct net_device
*dev
)
1349 struct net_local
*lp
= netdev_priv(dev
);
1350 unsigned short tx_block
= TX_BUF_START
;
1351 unsigned short curtbuf
;
1352 unsigned short ioaddr
= dev
->base_addr
;
1354 for ( curtbuf
=0 ; curtbuf
<lp
->num_tx_bufs
; curtbuf
++ )
1356 outw(tx_block
, ioaddr
+ WRITE_PTR
);
1358 outw(0x0000, ioaddr
+ DATAPORT
);
1359 outw(Cmd_INT
|Cmd_Xmit
, ioaddr
+ DATAPORT
);
1360 outw(tx_block
+0x08, ioaddr
+ DATAPORT
);
1361 outw(tx_block
+0x0e, ioaddr
+ DATAPORT
);
1363 outw(0x0000, ioaddr
+ DATAPORT
);
1364 outw(0x0000, ioaddr
+ DATAPORT
);
1365 outw(tx_block
+0x08, ioaddr
+ DATAPORT
);
1367 outw(0x8000, ioaddr
+ DATAPORT
);
1368 outw(-1, ioaddr
+ DATAPORT
);
1369 outw(tx_block
+0x16, ioaddr
+ DATAPORT
);
1370 outw(0x0000, ioaddr
+ DATAPORT
);
1372 tx_block
+= TX_BUF_SIZE
;
1374 lp
->tx_head
= TX_BUF_START
;
1375 lp
->tx_reap
= TX_BUF_START
;
1376 lp
->tx_tail
= tx_block
- TX_BUF_SIZE
;
1377 lp
->tx_link
= lp
->tx_tail
+ 0x08;
1378 lp
->rx_buf_start
= tx_block
;
1383 * Write the circular list of receive buffer descriptors to card memory.
1384 * The end of the list isn't marked, which means that the 82586 receive
1385 * unit will loop until buffers become available (this avoids it giving us
1386 * "out of resources" messages).
1389 static void eexp_hw_rxinit(struct net_device
*dev
)
1391 struct net_local
*lp
= netdev_priv(dev
);
1392 unsigned short rx_block
= lp
->rx_buf_start
;
1393 unsigned short ioaddr
= dev
->base_addr
;
1395 lp
->num_rx_bufs
= 0;
1396 lp
->rx_first
= lp
->rx_ptr
= rx_block
;
1401 outw(rx_block
, ioaddr
+ WRITE_PTR
);
1403 outw(0, ioaddr
+ DATAPORT
); outw(0, ioaddr
+DATAPORT
);
1404 outw(rx_block
+ RX_BUF_SIZE
, ioaddr
+DATAPORT
);
1405 outw(0xffff, ioaddr
+DATAPORT
);
1407 outw(0x0000, ioaddr
+DATAPORT
);
1408 outw(0xdead, ioaddr
+DATAPORT
);
1409 outw(0xdead, ioaddr
+DATAPORT
);
1410 outw(0xdead, ioaddr
+DATAPORT
);
1411 outw(0xdead, ioaddr
+DATAPORT
);
1412 outw(0xdead, ioaddr
+DATAPORT
);
1413 outw(0xdead, ioaddr
+DATAPORT
);
1415 outw(0x0000, ioaddr
+DATAPORT
);
1416 outw(rx_block
+ RX_BUF_SIZE
+ 0x16, ioaddr
+DATAPORT
);
1417 outw(rx_block
+ 0x20, ioaddr
+DATAPORT
);
1418 outw(0, ioaddr
+DATAPORT
);
1419 outw(RX_BUF_SIZE
-0x20, ioaddr
+DATAPORT
);
1421 lp
->rx_last
= rx_block
;
1422 rx_block
+= RX_BUF_SIZE
;
1423 } while (rx_block
<= lp
->rx_buf_end
-RX_BUF_SIZE
);
1426 /* Make first Rx frame descriptor point to first Rx buffer
1428 outw(lp
->rx_first
+ 6, ioaddr
+WRITE_PTR
);
1429 outw(lp
->rx_first
+ 0x16, ioaddr
+DATAPORT
);
1431 /* Close Rx frame descriptor ring */
1432 outw(lp
->rx_last
+ 4, ioaddr
+WRITE_PTR
);
1433 outw(lp
->rx_first
, ioaddr
+DATAPORT
);
1435 /* Close Rx buffer descriptor ring */
1436 outw(lp
->rx_last
+ 0x16 + 2, ioaddr
+WRITE_PTR
);
1437 outw(lp
->rx_first
+ 0x16, ioaddr
+DATAPORT
);
1442 * Un-reset the 586, and start the configuration sequence. We don't wait for
1443 * this to finish, but allow the interrupt handler to start the CU and RU for
1444 * us. We can't start the receive/transmission system up before we know that
1445 * the hardware is configured correctly.
1448 static void eexp_hw_init586(struct net_device
*dev
)
1450 struct net_local
*lp
= netdev_priv(dev
);
1451 unsigned short ioaddr
= dev
->base_addr
;
1455 printk("%s: eexp_hw_init586()\n", dev
->name
);
1462 outb(SIRQ_dis
|irqrmap
[dev
->irq
],ioaddr
+SET_IRQ
);
1464 /* Download the startup code */
1465 outw(lp
->rx_buf_end
& ~31, ioaddr
+ SM_PTR
);
1466 outw(lp
->width
?0x0001:0x0000, ioaddr
+ 0x8006);
1467 outw(0x0000, ioaddr
+ 0x8008);
1468 outw(0x0000, ioaddr
+ 0x800a);
1469 outw(0x0000, ioaddr
+ 0x800c);
1470 outw(0x0000, ioaddr
+ 0x800e);
1472 for (i
= 0; i
< (sizeof(start_code
)); i
+=32) {
1474 outw(i
, ioaddr
+ SM_PTR
);
1475 for (j
= 0; j
< 16; j
+=2)
1476 outw(start_code
[(i
+j
)/2],
1478 for (j
= 0; j
< 16; j
+=2)
1479 outw(start_code
[(i
+j
+16)/2],
1483 /* Do we want promiscuous mode or multicast? */
1484 outw(CONF_PROMISC
& ~31, ioaddr
+SM_PTR
);
1485 i
= inw(ioaddr
+SHADOW(CONF_PROMISC
));
1486 outw((dev
->flags
& IFF_PROMISC
)?(i
|1):(i
& ~1),
1487 ioaddr
+SHADOW(CONF_PROMISC
));
1488 lp
->was_promisc
= dev
->flags
& IFF_PROMISC
;
1490 eexp_setup_filter(dev
);
1493 /* Write our hardware address */
1494 outw(CONF_HWADDR
& ~31, ioaddr
+SM_PTR
);
1495 outw(((unsigned short *)dev
->dev_addr
)[0], ioaddr
+SHADOW(CONF_HWADDR
));
1496 outw(((unsigned short *)dev
->dev_addr
)[1],
1497 ioaddr
+SHADOW(CONF_HWADDR
+2));
1498 outw(((unsigned short *)dev
->dev_addr
)[2],
1499 ioaddr
+SHADOW(CONF_HWADDR
+4));
1501 eexp_hw_txinit(dev
);
1502 eexp_hw_rxinit(dev
);
1504 outb(0,ioaddr
+EEPROM_Ctrl
);
1507 scb_command(dev
, 0xf000);
1508 outb(0,ioaddr
+SIGNAL_CA
);
1510 outw(0, ioaddr
+SM_PTR
);
1513 unsigned short rboguscount
=50,rfailcount
=5;
1514 while (inw(ioaddr
+0x4000))
1518 printk(KERN_WARNING
"%s: i82586 reset timed out, kicking...\n",
1520 scb_command(dev
, 0);
1521 outb(0,ioaddr
+SIGNAL_CA
);
1525 printk(KERN_WARNING
"%s: i82586 not responding, giving up.\n",
1533 scb_wrcbl(dev
, CONF_LINK
);
1534 scb_command(dev
, 0xf000|SCB_CUstart
);
1535 outb(0,ioaddr
+SIGNAL_CA
);
1538 unsigned short iboguscount
=50,ifailcount
=5;
1539 while (!scb_status(dev
))
1545 printk(KERN_WARNING
"%s: i82586 initialization timed out, status %04x, cmd %04x\n",
1546 dev
->name
, scb_status(dev
), scb_rdcmd(dev
));
1547 scb_wrcbl(dev
, CONF_LINK
);
1548 scb_command(dev
, 0xf000|SCB_CUstart
);
1549 outb(0,ioaddr
+SIGNAL_CA
);
1554 printk(KERN_WARNING
"%s: Failed to initialize i82586, giving up.\n",dev
->name
);
1561 clear_loopback(dev
);
1562 outb(SIRQ_en
|irqrmap
[dev
->irq
],ioaddr
+SET_IRQ
);
1564 lp
->init_time
= jiffies
;
1566 printk("%s: leaving eexp_hw_init586()\n", dev
->name
);
1571 static void eexp_setup_filter(struct net_device
*dev
)
1573 struct dev_mc_list
*dmi
= dev
->mc_list
;
1574 unsigned short ioaddr
= dev
->base_addr
;
1575 int count
= dev
->mc_count
;
1578 printk(KERN_INFO
"%s: too many multicast addresses (%d)\n",
1583 outw(CONF_NR_MULTICAST
& ~31, ioaddr
+SM_PTR
);
1584 outw(count
, ioaddr
+SHADOW(CONF_NR_MULTICAST
));
1585 for (i
= 0; i
< count
; i
++) {
1586 unsigned short *data
= (unsigned short *)dmi
->dmi_addr
;
1588 printk(KERN_INFO
"%s: too few multicast addresses\n", dev
->name
);
1591 if (dmi
->dmi_addrlen
!= ETH_ALEN
) {
1592 printk(KERN_INFO
"%s: invalid multicast address length given.\n", dev
->name
);
1595 outw((CONF_MULTICAST
+(6*i
)) & ~31, ioaddr
+SM_PTR
);
1596 outw(data
[0], ioaddr
+SHADOW(CONF_MULTICAST
+(6*i
)));
1597 outw((CONF_MULTICAST
+(6*i
)+2) & ~31, ioaddr
+SM_PTR
);
1598 outw(data
[1], ioaddr
+SHADOW(CONF_MULTICAST
+(6*i
)+2));
1599 outw((CONF_MULTICAST
+(6*i
)+4) & ~31, ioaddr
+SM_PTR
);
1600 outw(data
[2], ioaddr
+SHADOW(CONF_MULTICAST
+(6*i
)+4));
1605 * Set or clear the multicast filter for this adaptor.
1608 eexp_set_multicast(struct net_device
*dev
)
1610 unsigned short ioaddr
= dev
->base_addr
;
1611 struct net_local
*lp
= netdev_priv(dev
);
1613 if ((dev
->flags
& IFF_PROMISC
) != lp
->was_promisc
) {
1614 outw(CONF_PROMISC
& ~31, ioaddr
+SM_PTR
);
1615 i
= inw(ioaddr
+SHADOW(CONF_PROMISC
));
1616 outw((dev
->flags
& IFF_PROMISC
)?(i
|1):(i
& ~1),
1617 ioaddr
+SHADOW(CONF_PROMISC
));
1618 lp
->was_promisc
= dev
->flags
& IFF_PROMISC
;
1621 if (!(dev
->flags
& IFF_PROMISC
)) {
1622 eexp_setup_filter(dev
);
1623 if (lp
->old_mc_count
!= dev
->mc_count
) {
1625 lp
->old_mc_count
= dev
->mc_count
;
1630 scb_command(dev
, SCB_CUsuspend
);
1631 outb(0, ioaddr
+SIGNAL_CA
);
1632 outb(0, ioaddr
+SIGNAL_CA
);
1634 printk("%s: waiting for CU to go suspended\n", dev
->name
);
1637 while ((SCB_CUstat(scb_status(dev
)) == 2) &&
1638 (time_before(jiffies
, oj
+ 2000)));
1639 if (SCB_CUstat(scb_status(dev
)) == 2)
1640 printk("%s: warning, CU didn't stop\n", dev
->name
);
1641 lp
->started
&= ~(STARTED_CU
);
1642 scb_wrcbl(dev
, CONF_LINK
);
1643 scb_command(dev
, SCB_CUstart
);
1644 outb(0, ioaddr
+SIGNAL_CA
);
1655 #define EEXP_MAX_CARDS 4 /* max number of cards to support */
1657 static struct net_device
*dev_eexp
[EEXP_MAX_CARDS
];
1658 static int irq
[EEXP_MAX_CARDS
];
1659 static int io
[EEXP_MAX_CARDS
];
1661 module_param_array(io
, int, NULL
, 0);
1662 module_param_array(irq
, int, NULL
, 0);
1663 MODULE_PARM_DESC(io
, "EtherExpress 16 I/O base address(es)");
1664 MODULE_PARM_DESC(irq
, "EtherExpress 16 IRQ number(s)");
1665 MODULE_LICENSE("GPL");
1668 /* Ideally the user would give us io=, irq= for every card. If any parameters
1669 * are specified, we verify and then use them. If no parameters are given, we
1670 * autoprobe for one card only.
1672 int __init
init_module(void)
1674 struct net_device
*dev
;
1675 int this_dev
, found
= 0;
1677 for (this_dev
= 0; this_dev
< EEXP_MAX_CARDS
; this_dev
++) {
1678 dev
= alloc_etherdev(sizeof(struct net_local
));
1679 dev
->irq
= irq
[this_dev
];
1680 dev
->base_addr
= io
[this_dev
];
1681 if (io
[this_dev
] == 0) {
1684 printk(KERN_NOTICE
"eexpress.c: Module autoprobe not recommended, give io=xx.\n");
1686 if (do_express_probe(dev
) == 0) {
1687 dev_eexp
[this_dev
] = dev
;
1691 printk(KERN_WARNING
"eexpress.c: Failed to register card at 0x%x.\n", io
[this_dev
]);
1700 void __exit
cleanup_module(void)
1704 for (this_dev
= 0; this_dev
< EEXP_MAX_CARDS
; this_dev
++) {
1705 struct net_device
*dev
= dev_eexp
[this_dev
];
1707 unregister_netdev(dev
);
1716 * c-file-style: "linux"