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
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
);
789 status
= scb_status(dev
);
792 printk(KERN_DEBUG
"%s: interrupt (status %x)\n", dev
->name
, status
);
795 if (lp
->started
== (STARTED_CU
| STARTED_RU
)) {
800 ack_cmd
= SCB_ack(status
);
801 scb_command(dev
, ack_cmd
);
802 outb(0,ioaddr
+SIGNAL_CA
);
806 if (SCB_complete(status
)) {
807 if (!eexp_hw_lasttxstat(dev
)) {
808 printk("%s: tx interrupt but no status\n", dev
->name
);
812 if (SCB_rxdframe(status
))
815 status
= scb_status(dev
);
816 } while (status
& 0xc000);
818 if (SCB_RUdead(status
))
820 printk(KERN_WARNING
"%s: RU stopped: status %04x\n",
823 printk(KERN_WARNING
"%s: cur_rfd=%04x, cur_rbd=%04x\n", dev
->name
, lp
->cur_rfd
, lp
->cur_rbd
);
824 outw(lp
->cur_rfd
, ioaddr
+READ_PTR
);
825 printk(KERN_WARNING
"%s: [%04x]\n", dev
->name
, inw(ioaddr
+DATAPORT
));
826 outw(lp
->cur_rfd
+6, ioaddr
+READ_PTR
);
827 printk(KERN_WARNING
"%s: rbd is %04x\n", dev
->name
, rbd
= inw(ioaddr
+DATAPORT
));
828 outw(rbd
, ioaddr
+READ_PTR
);
829 printk(KERN_WARNING
"%s: [%04x %04x] ", dev
->name
, inw(ioaddr
+DATAPORT
), inw(ioaddr
+DATAPORT
));
830 outw(rbd
+8, ioaddr
+READ_PTR
);
831 printk("[%04x]\n", inw(ioaddr
+DATAPORT
));
833 dev
->stats
.rx_errors
++;
837 lp
->cur_rfd
= lp
->first_rfd
;
839 scb_wrrfa(dev
, lp
->rx_buf_start
);
840 scb_command(dev
, SCB_RUstart
);
841 outb(0,ioaddr
+SIGNAL_CA
);
845 ack_cmd
= eexp_start_irq(dev
, status
);
847 ack_cmd
= SCB_ack(status
);
848 scb_command(dev
, ack_cmd
);
849 outb(0,ioaddr
+SIGNAL_CA
);
854 outb(SIRQ_en
|irqrmap
[dev
->irq
], ioaddr
+SET_IRQ
);
857 printk("%s: leaving eexp_irq()\n", dev
->name
);
859 outw(old_read_ptr
, ioaddr
+READ_PTR
);
860 outw(old_write_ptr
, ioaddr
+WRITE_PTR
);
862 spin_unlock(&lp
->lock
);
867 * Hardware access functions
871 * Set the cable type to use.
874 static void eexp_hw_set_interface(struct net_device
*dev
)
876 unsigned char oldval
= inb(dev
->base_addr
+ 0x300e);
878 switch (dev
->if_port
) {
885 outb(oldval
, dev
->base_addr
+0x300e);
890 * Check all the receive buffers, and hand any received packets
891 * to the upper levels. Basic sanity check on each frame
892 * descriptor, though we don't bother trying to fix broken ones.
895 static void eexp_hw_rx_pio(struct net_device
*dev
)
897 struct net_local
*lp
= netdev_priv(dev
);
898 unsigned short rx_block
= lp
->rx_ptr
;
899 unsigned short boguscount
= lp
->num_rx_bufs
;
900 unsigned short ioaddr
= dev
->base_addr
;
901 unsigned short status
;
904 printk(KERN_DEBUG
"%s: eexp_hw_rx()\n", dev
->name
);
908 unsigned short rfd_cmd
, rx_next
, pbuf
, pkt_len
;
910 outw(rx_block
, ioaddr
+ READ_PTR
);
911 status
= inw(ioaddr
+ DATAPORT
);
915 rfd_cmd
= inw(ioaddr
+ DATAPORT
);
916 rx_next
= inw(ioaddr
+ DATAPORT
);
917 pbuf
= inw(ioaddr
+ DATAPORT
);
919 outw(pbuf
, ioaddr
+ READ_PTR
);
920 pkt_len
= inw(ioaddr
+ DATAPORT
);
924 printk(KERN_WARNING
"%s: rfd_cmd not zero:0x%04x\n",
928 else if (pbuf
!=rx_block
+0x16)
930 printk(KERN_WARNING
"%s: rfd and rbd out of sync 0x%04x 0x%04x\n",
931 dev
->name
, rx_block
+0x16, pbuf
);
934 else if ((pkt_len
& 0xc000)!=0xc000)
936 printk(KERN_WARNING
"%s: EOF or F not set on received buffer (%04x)\n",
937 dev
->name
, pkt_len
& 0xc000);
940 else if (!FD_OK(status
))
942 dev
->stats
.rx_errors
++;
944 dev
->stats
.rx_crc_errors
++;
945 if (FD_Align(status
))
946 dev
->stats
.rx_frame_errors
++;
947 if (FD_Resrc(status
))
948 dev
->stats
.rx_fifo_errors
++;
950 dev
->stats
.rx_over_errors
++;
951 if (FD_Short(status
))
952 dev
->stats
.rx_length_errors
++;
958 skb
= dev_alloc_skb(pkt_len
+16);
961 printk(KERN_WARNING
"%s: Memory squeeze, dropping packet\n",dev
->name
);
962 dev
->stats
.rx_dropped
++;
966 outw(pbuf
+10, ioaddr
+READ_PTR
);
967 insw(ioaddr
+DATAPORT
, skb_put(skb
,pkt_len
),(pkt_len
+1)>>1);
968 skb
->protocol
= eth_type_trans(skb
,dev
);
970 dev
->last_rx
= jiffies
;
971 dev
->stats
.rx_packets
++;
972 dev
->stats
.rx_bytes
+= pkt_len
;
974 outw(rx_block
, ioaddr
+WRITE_PTR
);
975 outw(0, ioaddr
+DATAPORT
);
976 outw(0, ioaddr
+DATAPORT
);
979 } while (FD_Done(status
) && boguscount
--);
980 lp
->rx_ptr
= rx_block
;
984 * Hand a packet to the card for transmission
985 * If we get here, we MUST have already checked
986 * to make sure there is room in the transmit
990 static void eexp_hw_tx_pio(struct net_device
*dev
, unsigned short *buf
,
993 struct net_local
*lp
= netdev_priv(dev
);
994 unsigned short ioaddr
= dev
->base_addr
;
996 if (LOCKUP16
|| lp
->width
) {
997 /* Stop the CU so that there is no chance that it
998 jumps off to a bogus address while we are writing the
999 pointer to the next transmit packet in 8-bit mode --
1000 this eliminates the "CU wedged" errors in 8-bit mode.
1001 (Zoltan Szilagyi 10-12-96) */
1002 scb_command(dev
, SCB_CUsuspend
);
1003 outw(0xFFFF, ioaddr
+SIGNAL_CA
);
1006 outw(lp
->tx_head
, ioaddr
+ WRITE_PTR
);
1008 outw(0x0000, ioaddr
+ DATAPORT
);
1009 outw(Cmd_INT
|Cmd_Xmit
, ioaddr
+ DATAPORT
);
1010 outw(lp
->tx_head
+0x08, ioaddr
+ DATAPORT
);
1011 outw(lp
->tx_head
+0x0e, ioaddr
+ DATAPORT
);
1013 outw(0x0000, ioaddr
+ DATAPORT
);
1014 outw(0x0000, ioaddr
+ DATAPORT
);
1015 outw(lp
->tx_head
+0x08, ioaddr
+ DATAPORT
);
1017 outw(0x8000|len
, ioaddr
+ DATAPORT
);
1018 outw(-1, ioaddr
+ DATAPORT
);
1019 outw(lp
->tx_head
+0x16, ioaddr
+ DATAPORT
);
1020 outw(0, ioaddr
+ DATAPORT
);
1022 outsw(ioaddr
+ DATAPORT
, buf
, (len
+1)>>1);
1024 outw(lp
->tx_tail
+0xc, ioaddr
+ WRITE_PTR
);
1025 outw(lp
->tx_head
, ioaddr
+ DATAPORT
);
1027 dev
->trans_start
= jiffies
;
1028 lp
->tx_tail
= lp
->tx_head
;
1029 if (lp
->tx_head
==TX_BUF_START
+((lp
->num_tx_bufs
-1)*TX_BUF_SIZE
))
1030 lp
->tx_head
= TX_BUF_START
;
1032 lp
->tx_head
+= TX_BUF_SIZE
;
1033 if (lp
->tx_head
!= lp
->tx_reap
)
1034 netif_wake_queue(dev
);
1036 if (LOCKUP16
|| lp
->width
) {
1037 /* Restart the CU so that the packet can actually
1038 be transmitted. (Zoltan Szilagyi 10-12-96) */
1039 scb_command(dev
, SCB_CUresume
);
1040 outw(0xFFFF, ioaddr
+SIGNAL_CA
);
1043 dev
->stats
.tx_packets
++;
1044 lp
->last_tx
= jiffies
;
1048 * Sanity check the suspected EtherExpress card
1049 * Read hardware address, reset card, size memory and initialize buffer
1050 * memory pointers. These are held in dev->priv, in case someone has more
1051 * than one card in a machine.
1054 static int __init
eexp_hw_probe(struct net_device
*dev
, unsigned short ioaddr
)
1056 unsigned short hw_addr
[3];
1057 unsigned char buswidth
;
1058 unsigned int memory_size
;
1060 unsigned short xsum
= 0;
1061 struct net_local
*lp
= netdev_priv(dev
);
1063 printk("%s: EtherExpress 16 at %#x ",dev
->name
,ioaddr
);
1065 outb(ASIC_RST
, ioaddr
+EEPROM_Ctrl
);
1066 outb(0, ioaddr
+EEPROM_Ctrl
);
1068 outb(i586_RST
, ioaddr
+EEPROM_Ctrl
);
1070 hw_addr
[0] = eexp_hw_readeeprom(ioaddr
,2);
1071 hw_addr
[1] = eexp_hw_readeeprom(ioaddr
,3);
1072 hw_addr
[2] = eexp_hw_readeeprom(ioaddr
,4);
1074 /* Standard Address or Compaq LTE Address */
1075 if (!((hw_addr
[2]==0x00aa && ((hw_addr
[1] & 0xff00)==0x0000)) ||
1076 (hw_addr
[2]==0x0080 && ((hw_addr
[1] & 0xff00)==0x5F00))))
1078 printk(" rejected: invalid address %04x%04x%04x\n",
1079 hw_addr
[2],hw_addr
[1],hw_addr
[0]);
1083 /* Calculate the EEPROM checksum. Carry on anyway if it's bad,
1086 for (i
= 0; i
< 64; i
++)
1087 xsum
+= eexp_hw_readeeprom(ioaddr
, i
);
1089 printk(" (bad EEPROM xsum 0x%02x)", xsum
);
1091 dev
->base_addr
= ioaddr
;
1092 for ( i
=0 ; i
<6 ; i
++ )
1093 dev
->dev_addr
[i
] = ((unsigned char *)hw_addr
)[5-i
];
1096 static char irqmap
[]={0, 9, 3, 4, 5, 10, 11, 0};
1097 unsigned short setupval
= eexp_hw_readeeprom(ioaddr
,0);
1099 /* Use the IRQ from EEPROM if none was given */
1101 dev
->irq
= irqmap
[setupval
>>13];
1103 if (dev
->if_port
== 0xff) {
1104 dev
->if_port
= !(setupval
& 0x1000) ? AUI
:
1105 eexp_hw_readeeprom(ioaddr
,5) & 0x1 ? TPE
: BNC
;
1108 buswidth
= !((setupval
& 0x400) >> 10);
1111 memset(lp
, 0, sizeof(struct net_local
));
1112 spin_lock_init(&lp
->lock
);
1114 printk("(IRQ %d, %s connector, %d-bit bus", dev
->irq
,
1115 eexp_ifmap
[dev
->if_port
], buswidth
?8:16);
1117 if (!request_region(dev
->base_addr
+ 0x300e, 1, "EtherExpress"))
1120 eexp_hw_set_interface(dev
);
1122 release_region(dev
->base_addr
+ 0x300e, 1);
1124 /* Find out how much RAM we have on the card */
1125 outw(0, dev
->base_addr
+ WRITE_PTR
);
1126 for (i
= 0; i
< 32768; i
++)
1127 outw(0, dev
->base_addr
+ DATAPORT
);
1129 for (memory_size
= 0; memory_size
< 64; memory_size
++)
1131 outw(memory_size
<<10, dev
->base_addr
+ READ_PTR
);
1132 if (inw(dev
->base_addr
+DATAPORT
))
1134 outw(memory_size
<<10, dev
->base_addr
+ WRITE_PTR
);
1135 outw(memory_size
| 0x5000, dev
->base_addr
+DATAPORT
);
1136 outw(memory_size
<<10, dev
->base_addr
+ READ_PTR
);
1137 if (inw(dev
->base_addr
+DATAPORT
) != (memory_size
| 0x5000))
1141 /* Sort out the number of buffers. We may have 16, 32, 48 or 64k
1142 * of RAM to play with.
1144 lp
->num_tx_bufs
= 4;
1145 lp
->rx_buf_end
= 0x3ff6;
1146 switch (memory_size
)
1149 lp
->rx_buf_end
+= 0x4000;
1151 lp
->num_tx_bufs
+= 4;
1152 lp
->rx_buf_end
+= 0x4000;
1154 lp
->rx_buf_end
+= 0x4000;
1156 printk(", %dk RAM)\n", memory_size
);
1159 printk(") bad memory size (%dk).\n", memory_size
);
1164 lp
->rx_buf_start
= TX_BUF_START
+ (lp
->num_tx_bufs
*TX_BUF_SIZE
);
1165 lp
->width
= buswidth
;
1167 dev
->open
= eexp_open
;
1168 dev
->stop
= eexp_close
;
1169 dev
->hard_start_xmit
= eexp_xmit
;
1170 dev
->set_multicast_list
= &eexp_set_multicast
;
1171 dev
->tx_timeout
= eexp_timeout
;
1172 dev
->watchdog_timeo
= 2*HZ
;
1174 return register_netdev(dev
);
1178 * Read a word from the EtherExpress on-board serial EEPROM.
1179 * The EEPROM contains 64 words of 16 bits.
1181 static unsigned short __init
eexp_hw_readeeprom(unsigned short ioaddr
,
1182 unsigned char location
)
1184 unsigned short cmd
= 0x180|(location
&0x7f);
1185 unsigned short rval
= 0,wval
= EC_CS
|i586_RST
;
1188 outb(EC_CS
|i586_RST
,ioaddr
+EEPROM_Ctrl
);
1189 for (i
=0x100 ; i
; i
>>=1 )
1196 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1197 outb(wval
|EC_Clk
,ioaddr
+EEPROM_Ctrl
);
1199 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1203 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1204 for (i
=0x8000 ; i
; i
>>=1 )
1206 outb(wval
|EC_Clk
,ioaddr
+EEPROM_Ctrl
);
1208 if (inb(ioaddr
+EEPROM_Ctrl
)&EC_Rd
)
1210 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1214 outb(wval
|EC_Clk
,ioaddr
+EEPROM_Ctrl
);
1216 outb(wval
,ioaddr
+EEPROM_Ctrl
);
1222 * Reap tx buffers and return last transmit status.
1223 * if ==0 then either:
1224 * a) we're not transmitting anything, so why are we here?
1226 * otherwise, Stat_Busy(return) means we've still got some packets
1227 * to transmit, Stat_Done(return) means our buffers should be empty
1231 static unsigned short eexp_hw_lasttxstat(struct net_device
*dev
)
1233 struct net_local
*lp
= netdev_priv(dev
);
1234 unsigned short tx_block
= lp
->tx_reap
;
1235 unsigned short status
;
1237 if (!netif_queue_stopped(dev
) && lp
->tx_head
==lp
->tx_reap
)
1242 outw(tx_block
& ~31, dev
->base_addr
+ SM_PTR
);
1243 status
= inw(dev
->base_addr
+ SHADOW(tx_block
));
1244 if (!Stat_Done(status
))
1246 lp
->tx_link
= tx_block
;
1251 lp
->last_tx_restart
= 0;
1252 dev
->stats
.collisions
+= Stat_NoColl(status
);
1253 if (!Stat_OK(status
))
1255 char *whatsup
= NULL
;
1256 dev
->stats
.tx_errors
++;
1257 if (Stat_Abort(status
))
1258 dev
->stats
.tx_aborted_errors
++;
1259 if (Stat_TNoCar(status
)) {
1260 whatsup
= "aborted, no carrier";
1261 dev
->stats
.tx_carrier_errors
++;
1263 if (Stat_TNoCTS(status
)) {
1264 whatsup
= "aborted, lost CTS";
1265 dev
->stats
.tx_carrier_errors
++;
1267 if (Stat_TNoDMA(status
)) {
1268 whatsup
= "FIFO underran";
1269 dev
->stats
.tx_fifo_errors
++;
1271 if (Stat_TXColl(status
)) {
1272 whatsup
= "aborted, too many collisions";
1273 dev
->stats
.tx_aborted_errors
++;
1276 printk(KERN_INFO
"%s: transmit %s\n",
1277 dev
->name
, whatsup
);
1280 dev
->stats
.tx_packets
++;
1282 if (tx_block
== TX_BUF_START
+((lp
->num_tx_bufs
-1)*TX_BUF_SIZE
))
1283 lp
->tx_reap
= tx_block
= TX_BUF_START
;
1285 lp
->tx_reap
= tx_block
+= TX_BUF_SIZE
;
1286 netif_wake_queue(dev
);
1288 while (lp
->tx_reap
!= lp
->tx_head
);
1290 lp
->tx_link
= lp
->tx_tail
+ 0x08;
1296 * This should never happen. It is called when some higher routine detects
1297 * that the CU has stopped, to try to restart it from the last packet we knew
1298 * we were working on, or the idle loop if we had finished for the time.
1301 static void eexp_hw_txrestart(struct net_device
*dev
)
1303 struct net_local
*lp
= netdev_priv(dev
);
1304 unsigned short ioaddr
= dev
->base_addr
;
1306 lp
->last_tx_restart
= lp
->tx_link
;
1307 scb_wrcbl(dev
, lp
->tx_link
);
1308 scb_command(dev
, SCB_CUstart
);
1309 outb(0,ioaddr
+SIGNAL_CA
);
1312 unsigned short boguscount
=50,failcount
=5;
1313 while (!scb_status(dev
))
1319 printk(KERN_WARNING
"%s: CU start timed out, status %04x, cmd %04x\n", dev
->name
, scb_status(dev
), scb_rdcmd(dev
));
1320 scb_wrcbl(dev
, lp
->tx_link
);
1321 scb_command(dev
, SCB_CUstart
);
1322 outb(0,ioaddr
+SIGNAL_CA
);
1327 printk(KERN_WARNING
"%s: Failed to restart CU, resetting board...\n",dev
->name
);
1328 eexp_hw_init586(dev
);
1329 netif_wake_queue(dev
);
1338 * Writes down the list of transmit buffers into card memory. Each
1339 * entry consists of an 82586 transmit command, followed by a jump
1340 * pointing to itself. When we want to transmit a packet, we write
1341 * the data into the appropriate transmit buffer and then modify the
1342 * preceding jump to point at the new transmit command. This means that
1343 * the 586 command unit is continuously active.
1346 static void eexp_hw_txinit(struct net_device
*dev
)
1348 struct net_local
*lp
= netdev_priv(dev
);
1349 unsigned short tx_block
= TX_BUF_START
;
1350 unsigned short curtbuf
;
1351 unsigned short ioaddr
= dev
->base_addr
;
1353 for ( curtbuf
=0 ; curtbuf
<lp
->num_tx_bufs
; curtbuf
++ )
1355 outw(tx_block
, ioaddr
+ WRITE_PTR
);
1357 outw(0x0000, ioaddr
+ DATAPORT
);
1358 outw(Cmd_INT
|Cmd_Xmit
, ioaddr
+ DATAPORT
);
1359 outw(tx_block
+0x08, ioaddr
+ DATAPORT
);
1360 outw(tx_block
+0x0e, ioaddr
+ DATAPORT
);
1362 outw(0x0000, ioaddr
+ DATAPORT
);
1363 outw(0x0000, ioaddr
+ DATAPORT
);
1364 outw(tx_block
+0x08, ioaddr
+ DATAPORT
);
1366 outw(0x8000, ioaddr
+ DATAPORT
);
1367 outw(-1, ioaddr
+ DATAPORT
);
1368 outw(tx_block
+0x16, ioaddr
+ DATAPORT
);
1369 outw(0x0000, ioaddr
+ DATAPORT
);
1371 tx_block
+= TX_BUF_SIZE
;
1373 lp
->tx_head
= TX_BUF_START
;
1374 lp
->tx_reap
= TX_BUF_START
;
1375 lp
->tx_tail
= tx_block
- TX_BUF_SIZE
;
1376 lp
->tx_link
= lp
->tx_tail
+ 0x08;
1377 lp
->rx_buf_start
= tx_block
;
1382 * Write the circular list of receive buffer descriptors to card memory.
1383 * The end of the list isn't marked, which means that the 82586 receive
1384 * unit will loop until buffers become available (this avoids it giving us
1385 * "out of resources" messages).
1388 static void eexp_hw_rxinit(struct net_device
*dev
)
1390 struct net_local
*lp
= netdev_priv(dev
);
1391 unsigned short rx_block
= lp
->rx_buf_start
;
1392 unsigned short ioaddr
= dev
->base_addr
;
1394 lp
->num_rx_bufs
= 0;
1395 lp
->rx_first
= lp
->rx_ptr
= rx_block
;
1400 outw(rx_block
, ioaddr
+ WRITE_PTR
);
1402 outw(0, ioaddr
+ DATAPORT
); outw(0, ioaddr
+DATAPORT
);
1403 outw(rx_block
+ RX_BUF_SIZE
, ioaddr
+DATAPORT
);
1404 outw(0xffff, ioaddr
+DATAPORT
);
1406 outw(0x0000, ioaddr
+DATAPORT
);
1407 outw(0xdead, 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
);
1414 outw(0x0000, ioaddr
+DATAPORT
);
1415 outw(rx_block
+ RX_BUF_SIZE
+ 0x16, ioaddr
+DATAPORT
);
1416 outw(rx_block
+ 0x20, ioaddr
+DATAPORT
);
1417 outw(0, ioaddr
+DATAPORT
);
1418 outw(RX_BUF_SIZE
-0x20, ioaddr
+DATAPORT
);
1420 lp
->rx_last
= rx_block
;
1421 rx_block
+= RX_BUF_SIZE
;
1422 } while (rx_block
<= lp
->rx_buf_end
-RX_BUF_SIZE
);
1425 /* Make first Rx frame descriptor point to first Rx buffer
1427 outw(lp
->rx_first
+ 6, ioaddr
+WRITE_PTR
);
1428 outw(lp
->rx_first
+ 0x16, ioaddr
+DATAPORT
);
1430 /* Close Rx frame descriptor ring */
1431 outw(lp
->rx_last
+ 4, ioaddr
+WRITE_PTR
);
1432 outw(lp
->rx_first
, ioaddr
+DATAPORT
);
1434 /* Close Rx buffer descriptor ring */
1435 outw(lp
->rx_last
+ 0x16 + 2, ioaddr
+WRITE_PTR
);
1436 outw(lp
->rx_first
+ 0x16, ioaddr
+DATAPORT
);
1441 * Un-reset the 586, and start the configuration sequence. We don't wait for
1442 * this to finish, but allow the interrupt handler to start the CU and RU for
1443 * us. We can't start the receive/transmission system up before we know that
1444 * the hardware is configured correctly.
1447 static void eexp_hw_init586(struct net_device
*dev
)
1449 struct net_local
*lp
= netdev_priv(dev
);
1450 unsigned short ioaddr
= dev
->base_addr
;
1454 printk("%s: eexp_hw_init586()\n", dev
->name
);
1461 outb(SIRQ_dis
|irqrmap
[dev
->irq
],ioaddr
+SET_IRQ
);
1463 /* Download the startup code */
1464 outw(lp
->rx_buf_end
& ~31, ioaddr
+ SM_PTR
);
1465 outw(lp
->width
?0x0001:0x0000, ioaddr
+ 0x8006);
1466 outw(0x0000, ioaddr
+ 0x8008);
1467 outw(0x0000, ioaddr
+ 0x800a);
1468 outw(0x0000, ioaddr
+ 0x800c);
1469 outw(0x0000, ioaddr
+ 0x800e);
1471 for (i
= 0; i
< (sizeof(start_code
)); i
+=32) {
1473 outw(i
, ioaddr
+ SM_PTR
);
1474 for (j
= 0; j
< 16; j
+=2)
1475 outw(start_code
[(i
+j
)/2],
1477 for (j
= 0; j
< 16; j
+=2)
1478 outw(start_code
[(i
+j
+16)/2],
1482 /* Do we want promiscuous mode or multicast? */
1483 outw(CONF_PROMISC
& ~31, ioaddr
+SM_PTR
);
1484 i
= inw(ioaddr
+SHADOW(CONF_PROMISC
));
1485 outw((dev
->flags
& IFF_PROMISC
)?(i
|1):(i
& ~1),
1486 ioaddr
+SHADOW(CONF_PROMISC
));
1487 lp
->was_promisc
= dev
->flags
& IFF_PROMISC
;
1489 eexp_setup_filter(dev
);
1492 /* Write our hardware address */
1493 outw(CONF_HWADDR
& ~31, ioaddr
+SM_PTR
);
1494 outw(((unsigned short *)dev
->dev_addr
)[0], ioaddr
+SHADOW(CONF_HWADDR
));
1495 outw(((unsigned short *)dev
->dev_addr
)[1],
1496 ioaddr
+SHADOW(CONF_HWADDR
+2));
1497 outw(((unsigned short *)dev
->dev_addr
)[2],
1498 ioaddr
+SHADOW(CONF_HWADDR
+4));
1500 eexp_hw_txinit(dev
);
1501 eexp_hw_rxinit(dev
);
1503 outb(0,ioaddr
+EEPROM_Ctrl
);
1506 scb_command(dev
, 0xf000);
1507 outb(0,ioaddr
+SIGNAL_CA
);
1509 outw(0, ioaddr
+SM_PTR
);
1512 unsigned short rboguscount
=50,rfailcount
=5;
1513 while (inw(ioaddr
+0x4000))
1517 printk(KERN_WARNING
"%s: i82586 reset timed out, kicking...\n",
1519 scb_command(dev
, 0);
1520 outb(0,ioaddr
+SIGNAL_CA
);
1524 printk(KERN_WARNING
"%s: i82586 not responding, giving up.\n",
1532 scb_wrcbl(dev
, CONF_LINK
);
1533 scb_command(dev
, 0xf000|SCB_CUstart
);
1534 outb(0,ioaddr
+SIGNAL_CA
);
1537 unsigned short iboguscount
=50,ifailcount
=5;
1538 while (!scb_status(dev
))
1544 printk(KERN_WARNING
"%s: i82586 initialization timed out, status %04x, cmd %04x\n",
1545 dev
->name
, scb_status(dev
), scb_rdcmd(dev
));
1546 scb_wrcbl(dev
, CONF_LINK
);
1547 scb_command(dev
, 0xf000|SCB_CUstart
);
1548 outb(0,ioaddr
+SIGNAL_CA
);
1553 printk(KERN_WARNING
"%s: Failed to initialize i82586, giving up.\n",dev
->name
);
1560 clear_loopback(dev
);
1561 outb(SIRQ_en
|irqrmap
[dev
->irq
],ioaddr
+SET_IRQ
);
1563 lp
->init_time
= jiffies
;
1565 printk("%s: leaving eexp_hw_init586()\n", dev
->name
);
1570 static void eexp_setup_filter(struct net_device
*dev
)
1572 struct dev_mc_list
*dmi
= dev
->mc_list
;
1573 unsigned short ioaddr
= dev
->base_addr
;
1574 int count
= dev
->mc_count
;
1577 printk(KERN_INFO
"%s: too many multicast addresses (%d)\n",
1582 outw(CONF_NR_MULTICAST
& ~31, ioaddr
+SM_PTR
);
1583 outw(count
, ioaddr
+SHADOW(CONF_NR_MULTICAST
));
1584 for (i
= 0; i
< count
; i
++) {
1585 unsigned short *data
= (unsigned short *)dmi
->dmi_addr
;
1587 printk(KERN_INFO
"%s: too few multicast addresses\n", dev
->name
);
1590 if (dmi
->dmi_addrlen
!= ETH_ALEN
) {
1591 printk(KERN_INFO
"%s: invalid multicast address length given.\n", dev
->name
);
1594 outw((CONF_MULTICAST
+(6*i
)) & ~31, ioaddr
+SM_PTR
);
1595 outw(data
[0], ioaddr
+SHADOW(CONF_MULTICAST
+(6*i
)));
1596 outw((CONF_MULTICAST
+(6*i
)+2) & ~31, ioaddr
+SM_PTR
);
1597 outw(data
[1], ioaddr
+SHADOW(CONF_MULTICAST
+(6*i
)+2));
1598 outw((CONF_MULTICAST
+(6*i
)+4) & ~31, ioaddr
+SM_PTR
);
1599 outw(data
[2], ioaddr
+SHADOW(CONF_MULTICAST
+(6*i
)+4));
1604 * Set or clear the multicast filter for this adaptor.
1607 eexp_set_multicast(struct net_device
*dev
)
1609 unsigned short ioaddr
= dev
->base_addr
;
1610 struct net_local
*lp
= netdev_priv(dev
);
1612 if ((dev
->flags
& IFF_PROMISC
) != lp
->was_promisc
) {
1613 outw(CONF_PROMISC
& ~31, ioaddr
+SM_PTR
);
1614 i
= inw(ioaddr
+SHADOW(CONF_PROMISC
));
1615 outw((dev
->flags
& IFF_PROMISC
)?(i
|1):(i
& ~1),
1616 ioaddr
+SHADOW(CONF_PROMISC
));
1617 lp
->was_promisc
= dev
->flags
& IFF_PROMISC
;
1620 if (!(dev
->flags
& IFF_PROMISC
)) {
1621 eexp_setup_filter(dev
);
1622 if (lp
->old_mc_count
!= dev
->mc_count
) {
1624 lp
->old_mc_count
= dev
->mc_count
;
1629 scb_command(dev
, SCB_CUsuspend
);
1630 outb(0, ioaddr
+SIGNAL_CA
);
1631 outb(0, ioaddr
+SIGNAL_CA
);
1633 printk("%s: waiting for CU to go suspended\n", dev
->name
);
1636 while ((SCB_CUstat(scb_status(dev
)) == 2) &&
1637 (time_before(jiffies
, oj
+ 2000)));
1638 if (SCB_CUstat(scb_status(dev
)) == 2)
1639 printk("%s: warning, CU didn't stop\n", dev
->name
);
1640 lp
->started
&= ~(STARTED_CU
);
1641 scb_wrcbl(dev
, CONF_LINK
);
1642 scb_command(dev
, SCB_CUstart
);
1643 outb(0, ioaddr
+SIGNAL_CA
);
1654 #define EEXP_MAX_CARDS 4 /* max number of cards to support */
1656 static struct net_device
*dev_eexp
[EEXP_MAX_CARDS
];
1657 static int irq
[EEXP_MAX_CARDS
];
1658 static int io
[EEXP_MAX_CARDS
];
1660 module_param_array(io
, int, NULL
, 0);
1661 module_param_array(irq
, int, NULL
, 0);
1662 MODULE_PARM_DESC(io
, "EtherExpress 16 I/O base address(es)");
1663 MODULE_PARM_DESC(irq
, "EtherExpress 16 IRQ number(s)");
1664 MODULE_LICENSE("GPL");
1667 /* Ideally the user would give us io=, irq= for every card. If any parameters
1668 * are specified, we verify and then use them. If no parameters are given, we
1669 * autoprobe for one card only.
1671 int __init
init_module(void)
1673 struct net_device
*dev
;
1674 int this_dev
, found
= 0;
1676 for (this_dev
= 0; this_dev
< EEXP_MAX_CARDS
; this_dev
++) {
1677 dev
= alloc_etherdev(sizeof(struct net_local
));
1678 dev
->irq
= irq
[this_dev
];
1679 dev
->base_addr
= io
[this_dev
];
1680 if (io
[this_dev
] == 0) {
1683 printk(KERN_NOTICE
"eexpress.c: Module autoprobe not recommended, give io=xx.\n");
1685 if (do_express_probe(dev
) == 0) {
1686 dev_eexp
[this_dev
] = dev
;
1690 printk(KERN_WARNING
"eexpress.c: Failed to register card at 0x%x.\n", io
[this_dev
]);
1699 void __exit
cleanup_module(void)
1703 for (this_dev
= 0; this_dev
< EEXP_MAX_CARDS
; this_dev
++) {
1704 struct net_device
*dev
= dev_eexp
[this_dev
];
1706 unregister_netdev(dev
);
1715 * c-file-style: "linux"
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