1 /*======================================================================
3 A PCMCIA ethernet driver for Asix AX88190-based cards
5 The Asix AX88190 is a NS8390-derived chipset with a few nasty
6 idiosyncracies that make it very inconvenient to support with a
7 standard 8390 driver. This driver is based on pcnet_cs, with the
8 tweaked 8390 code grafted on the end. Much of what I did was to
9 clean up and update a similar driver supplied by Asix, which was
10 adapted by William Lee, william@asix.com.tw.
12 Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net
14 axnet_cs.c 1.28 2002/06/29 06:27:37
16 The network driver code is based on Donald Becker's NE2000 code:
18 Written 1992,1993 by Donald Becker.
19 Copyright 1993 United States Government as represented by the
20 Director, National Security Agency. This software may be used and
21 distributed according to the terms of the GNU General Public License,
22 incorporated herein by reference.
23 Donald Becker may be reached at becker@scyld.com
25 ======================================================================*/
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/ptrace.h>
33 #include <linux/string.h>
34 #include <linux/timer.h>
35 #include <linux/delay.h>
36 #include <linux/spinlock.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/crc32.h>
40 #include <linux/mii.h>
43 #include <pcmcia/cistpl.h>
44 #include <pcmcia/ciscode.h>
45 #include <pcmcia/ds.h>
46 #include <pcmcia/cisreg.h>
49 #include <asm/system.h>
50 #include <asm/byteorder.h>
51 #include <asm/uaccess.h>
53 #define AXNET_CMD 0x00
54 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
55 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
56 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
57 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
58 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
60 #define AXNET_START_PG 0x40 /* First page of TX buffer */
61 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
63 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
65 #define IS_AX88190 0x0001
66 #define IS_AX88790 0x0002
68 /*====================================================================*/
70 /* Module parameters */
72 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
73 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
74 MODULE_LICENSE("GPL");
77 /*====================================================================*/
79 static int axnet_config(struct pcmcia_device
*link
);
80 static void axnet_release(struct pcmcia_device
*link
);
81 static int axnet_open(struct net_device
*dev
);
82 static int axnet_close(struct net_device
*dev
);
83 static int axnet_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
84 static netdev_tx_t
axnet_start_xmit(struct sk_buff
*skb
,
85 struct net_device
*dev
);
86 static struct net_device_stats
*get_stats(struct net_device
*dev
);
87 static void set_multicast_list(struct net_device
*dev
);
88 static void axnet_tx_timeout(struct net_device
*dev
);
89 static irqreturn_t
ei_irq_wrapper(int irq
, void *dev_id
);
90 static void ei_watchdog(u_long arg
);
91 static void axnet_reset_8390(struct net_device
*dev
);
93 static int mdio_read(unsigned int addr
, int phy_id
, int loc
);
94 static void mdio_write(unsigned int addr
, int phy_id
, int loc
, int value
);
96 static void get_8390_hdr(struct net_device
*,
97 struct e8390_pkt_hdr
*, int);
98 static void block_input(struct net_device
*dev
, int count
,
99 struct sk_buff
*skb
, int ring_offset
);
100 static void block_output(struct net_device
*dev
, int count
,
101 const u_char
*buf
, const int start_page
);
103 static void axnet_detach(struct pcmcia_device
*p_dev
);
105 static void AX88190_init(struct net_device
*dev
, int startp
);
106 static int ax_open(struct net_device
*dev
);
107 static int ax_close(struct net_device
*dev
);
108 static irqreturn_t
ax_interrupt(int irq
, void *dev_id
);
110 /*====================================================================*/
112 typedef struct axnet_dev_t
{
113 struct pcmcia_device
*p_dev
;
115 struct timer_list watchdog
;
116 int stale
, fast_poll
;
124 static inline axnet_dev_t
*PRIV(struct net_device
*dev
)
126 void *p
= (char *)netdev_priv(dev
) + sizeof(struct ei_device
);
130 static const struct net_device_ops axnet_netdev_ops
= {
131 .ndo_open
= axnet_open
,
132 .ndo_stop
= axnet_close
,
133 .ndo_do_ioctl
= axnet_ioctl
,
134 .ndo_start_xmit
= axnet_start_xmit
,
135 .ndo_tx_timeout
= axnet_tx_timeout
,
136 .ndo_get_stats
= get_stats
,
137 .ndo_set_multicast_list
= set_multicast_list
,
138 .ndo_change_mtu
= eth_change_mtu
,
139 .ndo_set_mac_address
= eth_mac_addr
,
140 .ndo_validate_addr
= eth_validate_addr
,
143 static int axnet_probe(struct pcmcia_device
*link
)
146 struct net_device
*dev
;
147 struct ei_device
*ei_local
;
149 dev_dbg(&link
->dev
, "axnet_attach()\n");
151 dev
= alloc_etherdev(sizeof(struct ei_device
) + sizeof(axnet_dev_t
));
155 ei_local
= netdev_priv(dev
);
156 spin_lock_init(&ei_local
->page_lock
);
161 link
->config_flags
|= CONF_ENABLE_IRQ
;
163 dev
->netdev_ops
= &axnet_netdev_ops
;
165 dev
->watchdog_timeo
= TX_TIMEOUT
;
167 return axnet_config(link
);
170 static void axnet_detach(struct pcmcia_device
*link
)
172 struct net_device
*dev
= link
->priv
;
174 dev_dbg(&link
->dev
, "axnet_detach(0x%p)\n", link
);
176 unregister_netdev(dev
);
183 /*======================================================================
185 This probes for a card's hardware address by reading the PROM.
187 ======================================================================*/
189 static int get_prom(struct pcmcia_device
*link
)
191 struct net_device
*dev
= link
->priv
;
192 unsigned int ioaddr
= dev
->base_addr
;
195 /* This is based on drivers/net/ne.c */
197 u_char value
, offset
;
199 {E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, E8390_CMD
}, /* Select page 0*/
200 {0x01, EN0_DCFG
}, /* Set word-wide access. */
201 {0x00, EN0_RCNTLO
}, /* Clear the count regs. */
203 {0x00, EN0_IMR
}, /* Mask completion irq. */
205 {E8390_RXOFF
|0x40, EN0_RXCR
}, /* 0x60 Set to monitor */
206 {E8390_TXOFF
, EN0_TXCR
}, /* 0x02 and loopback mode. */
209 {0x00, EN0_RSARLO
}, /* DMA starting at 0x0400. */
211 {E8390_RREAD
+E8390_START
, E8390_CMD
},
214 /* Not much of a test, but the alternatives are messy */
215 if (link
->config_base
!= 0x03c0)
218 axnet_reset_8390(dev
);
221 for (i
= 0; i
< ARRAY_SIZE(program_seq
); i
++)
222 outb_p(program_seq
[i
].value
, ioaddr
+ program_seq
[i
].offset
);
224 for (i
= 0; i
< 6; i
+= 2) {
225 j
= inw(ioaddr
+ AXNET_DATAPORT
);
226 dev
->dev_addr
[i
] = j
& 0xff;
227 dev
->dev_addr
[i
+1] = j
>> 8;
232 static int try_io_port(struct pcmcia_device
*link
)
235 link
->resource
[0]->flags
&= ~IO_DATA_PATH_WIDTH
;
236 link
->resource
[1]->flags
&= ~IO_DATA_PATH_WIDTH
;
237 if (link
->resource
[0]->end
== 32) {
238 link
->resource
[0]->flags
|= IO_DATA_PATH_WIDTH_AUTO
;
239 /* for master/slave multifunction cards */
240 if (link
->resource
[1]->end
> 0)
241 link
->resource
[1]->flags
|= IO_DATA_PATH_WIDTH_8
;
243 /* This should be two 16-port windows */
244 link
->resource
[0]->flags
|= IO_DATA_PATH_WIDTH_8
;
245 link
->resource
[1]->flags
|= IO_DATA_PATH_WIDTH_16
;
247 if (link
->resource
[0]->start
== 0) {
248 for (j
= 0; j
< 0x400; j
+= 0x20) {
249 link
->resource
[0]->start
= j
^ 0x300;
250 link
->resource
[1]->start
= (j
^ 0x300) + 0x10;
252 ret
= pcmcia_request_io(link
);
258 return pcmcia_request_io(link
);
262 static int axnet_configcheck(struct pcmcia_device
*p_dev
, void *priv_data
)
264 if (p_dev
->config_index
== 0)
267 p_dev
->config_index
= 0x05;
268 if (p_dev
->resource
[0]->end
+ p_dev
->resource
[1]->end
< 32)
271 return try_io_port(p_dev
);
274 static int axnet_config(struct pcmcia_device
*link
)
276 struct net_device
*dev
= link
->priv
;
277 axnet_dev_t
*info
= PRIV(dev
);
280 dev_dbg(&link
->dev
, "axnet_config(0x%p)\n", link
);
282 /* don't trust the CIS on this; Linksys got it wrong */
283 link
->config_regs
= 0x63;
284 link
->config_flags
|= CONF_ENABLE_IRQ
| CONF_AUTO_SET_IO
;
285 ret
= pcmcia_loop_config(link
, axnet_configcheck
, NULL
);
292 if (resource_size(link
->resource
[1]) == 8)
293 link
->config_flags
|= CONF_ENABLE_SPKR
;
295 ret
= pcmcia_enable_device(link
);
299 dev
->irq
= link
->irq
;
300 dev
->base_addr
= link
->resource
[0]->start
;
302 if (!get_prom(link
)) {
303 pr_notice("this is not an AX88190 card!\n");
304 pr_notice("use pcnet_cs instead.\n");
308 ei_status
.name
= "AX88190";
309 ei_status
.word16
= 1;
310 ei_status
.tx_start_page
= AXNET_START_PG
;
311 ei_status
.rx_start_page
= AXNET_START_PG
+ TX_PAGES
;
312 ei_status
.stop_page
= AXNET_STOP_PG
;
313 ei_status
.reset_8390
= axnet_reset_8390
;
314 ei_status
.get_8390_hdr
= get_8390_hdr
;
315 ei_status
.block_input
= block_input
;
316 ei_status
.block_output
= block_output
;
318 if (inb(dev
->base_addr
+ AXNET_TEST
) != 0)
319 info
->flags
|= IS_AX88790
;
321 info
->flags
|= IS_AX88190
;
323 if (info
->flags
& IS_AX88790
)
324 outb(0x10, dev
->base_addr
+ AXNET_GPIO
); /* select Internal PHY */
326 info
->active_low
= 0;
328 for (i
= 0; i
< 32; i
++) {
329 j
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 1);
330 j2
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 2);
331 if (j
== j2
) continue;
332 if ((j
!= 0) && (j
!= 0xffff)) break;
336 /* Maybe PHY is in power down mode. (PPD_SET = 1)
337 Bit 2 of CCSR is active low. */
338 pcmcia_write_config_byte(link
, CISREG_CCSR
, 0x04);
339 for (i
= 0; i
< 32; i
++) {
340 j
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 1);
341 j2
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 2);
342 if (j
== j2
) continue;
343 if ((j
!= 0) && (j
!= 0xffff)) {
344 info
->active_low
= 1;
350 info
->phy_id
= (i
< 32) ? i
: -1;
351 SET_NETDEV_DEV(dev
, &link
->dev
);
353 if (register_netdev(dev
) != 0) {
354 pr_notice("register_netdev() failed\n");
358 netdev_info(dev
, "Asix AX88%d90: io %#3lx, irq %d, hw_addr %pM\n",
359 ((info
->flags
& IS_AX88790
) ? 7 : 1),
360 dev
->base_addr
, dev
->irq
, dev
->dev_addr
);
361 if (info
->phy_id
!= -1) {
362 netdev_dbg(dev
, " MII transceiver at index %d, status %x\n",
365 netdev_notice(dev
, " No MII transceivers found!\n");
374 static void axnet_release(struct pcmcia_device
*link
)
376 pcmcia_disable_device(link
);
379 static int axnet_suspend(struct pcmcia_device
*link
)
381 struct net_device
*dev
= link
->priv
;
384 netif_device_detach(dev
);
389 static int axnet_resume(struct pcmcia_device
*link
)
391 struct net_device
*dev
= link
->priv
;
392 axnet_dev_t
*info
= PRIV(dev
);
395 if (info
->active_low
== 1)
396 pcmcia_write_config_byte(link
, CISREG_CCSR
, 0x04);
398 axnet_reset_8390(dev
);
399 AX88190_init(dev
, 1);
400 netif_device_attach(dev
);
407 /*======================================================================
409 MII interface support
411 ======================================================================*/
413 #define MDIO_SHIFT_CLK 0x01
414 #define MDIO_DATA_WRITE0 0x00
415 #define MDIO_DATA_WRITE1 0x08
416 #define MDIO_DATA_READ 0x04
417 #define MDIO_MASK 0x0f
418 #define MDIO_ENB_IN 0x02
420 static void mdio_sync(unsigned int addr
)
423 for (bits
= 0; bits
< 32; bits
++) {
424 outb_p(MDIO_DATA_WRITE1
, addr
);
425 outb_p(MDIO_DATA_WRITE1
| MDIO_SHIFT_CLK
, addr
);
429 static int mdio_read(unsigned int addr
, int phy_id
, int loc
)
431 u_int cmd
= (0xf6<<10)|(phy_id
<<5)|loc
;
435 for (i
= 14; i
>= 0; i
--) {
436 int dat
= (cmd
&(1<<i
)) ? MDIO_DATA_WRITE1
: MDIO_DATA_WRITE0
;
438 outb_p(dat
| MDIO_SHIFT_CLK
, addr
);
440 for (i
= 19; i
> 0; i
--) {
441 outb_p(MDIO_ENB_IN
, addr
);
442 retval
= (retval
<< 1) | ((inb_p(addr
) & MDIO_DATA_READ
) != 0);
443 outb_p(MDIO_ENB_IN
| MDIO_SHIFT_CLK
, addr
);
445 return (retval
>>1) & 0xffff;
448 static void mdio_write(unsigned int addr
, int phy_id
, int loc
, int value
)
450 u_int cmd
= (0x05<<28)|(phy_id
<<23)|(loc
<<18)|(1<<17)|value
;
454 for (i
= 31; i
>= 0; i
--) {
455 int dat
= (cmd
&(1<<i
)) ? MDIO_DATA_WRITE1
: MDIO_DATA_WRITE0
;
457 outb_p(dat
| MDIO_SHIFT_CLK
, addr
);
459 for (i
= 1; i
>= 0; i
--) {
460 outb_p(MDIO_ENB_IN
, addr
);
461 outb_p(MDIO_ENB_IN
| MDIO_SHIFT_CLK
, addr
);
465 /*====================================================================*/
467 static int axnet_open(struct net_device
*dev
)
470 axnet_dev_t
*info
= PRIV(dev
);
471 struct pcmcia_device
*link
= info
->p_dev
;
472 unsigned int nic_base
= dev
->base_addr
;
474 dev_dbg(&link
->dev
, "axnet_open('%s')\n", dev
->name
);
476 if (!pcmcia_dev_present(link
))
479 outb_p(0xFF, nic_base
+ EN0_ISR
); /* Clear bogus intr. */
480 ret
= request_irq(dev
->irq
, ei_irq_wrapper
, IRQF_SHARED
, "axnet_cs", dev
);
486 info
->link_status
= 0x00;
487 init_timer(&info
->watchdog
);
488 info
->watchdog
.function
= ei_watchdog
;
489 info
->watchdog
.data
= (u_long
)dev
;
490 info
->watchdog
.expires
= jiffies
+ HZ
;
491 add_timer(&info
->watchdog
);
496 /*====================================================================*/
498 static int axnet_close(struct net_device
*dev
)
500 axnet_dev_t
*info
= PRIV(dev
);
501 struct pcmcia_device
*link
= info
->p_dev
;
503 dev_dbg(&link
->dev
, "axnet_close('%s')\n", dev
->name
);
506 free_irq(dev
->irq
, dev
);
509 netif_stop_queue(dev
);
510 del_timer_sync(&info
->watchdog
);
515 /*======================================================================
517 Hard reset the card. This used to pause for the same period that
518 a 8390 reset command required, but that shouldn't be necessary.
520 ======================================================================*/
522 static void axnet_reset_8390(struct net_device
*dev
)
524 unsigned int nic_base
= dev
->base_addr
;
527 ei_status
.txing
= ei_status
.dmaing
= 0;
529 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, nic_base
+ E8390_CMD
);
531 outb(inb(nic_base
+ AXNET_RESET
), nic_base
+ AXNET_RESET
);
533 for (i
= 0; i
< 100; i
++) {
534 if ((inb_p(nic_base
+EN0_ISR
) & ENISR_RESET
) != 0)
538 outb_p(ENISR_RESET
, nic_base
+ EN0_ISR
); /* Ack intr. */
541 netdev_err(dev
, "axnet_reset_8390() did not complete\n");
543 } /* axnet_reset_8390 */
545 /*====================================================================*/
547 static irqreturn_t
ei_irq_wrapper(int irq
, void *dev_id
)
549 struct net_device
*dev
= dev_id
;
550 PRIV(dev
)->stale
= 0;
551 return ax_interrupt(irq
, dev_id
);
554 static void ei_watchdog(u_long arg
)
556 struct net_device
*dev
= (struct net_device
*)(arg
);
557 axnet_dev_t
*info
= PRIV(dev
);
558 unsigned int nic_base
= dev
->base_addr
;
559 unsigned int mii_addr
= nic_base
+ AXNET_MII_EEP
;
562 if (!netif_device_present(dev
)) goto reschedule
;
564 /* Check for pending interrupt with expired latency timer: with
565 this, we can limp along even if the interrupt is blocked */
566 if (info
->stale
++ && (inb_p(nic_base
+ EN0_ISR
) & ENISR_ALL
)) {
567 if (!info
->fast_poll
)
568 netdev_info(dev
, "interrupt(s) dropped!\n");
569 ei_irq_wrapper(dev
->irq
, dev
);
570 info
->fast_poll
= HZ
;
572 if (info
->fast_poll
) {
574 info
->watchdog
.expires
= jiffies
+ 1;
575 add_timer(&info
->watchdog
);
579 if (info
->phy_id
< 0)
581 link
= mdio_read(mii_addr
, info
->phy_id
, 1);
582 if (!link
|| (link
== 0xffff)) {
583 netdev_info(dev
, "MII is missing!\n");
589 if (link
!= info
->link_status
) {
590 u_short p
= mdio_read(mii_addr
, info
->phy_id
, 5);
591 netdev_info(dev
, "%s link beat\n", link
? "found" : "lost");
593 info
->duplex_flag
= (p
& 0x0140) ? 0x80 : 0x00;
595 netdev_info(dev
, "autonegotiation complete: %dbaseT-%cD selected\n",
596 (p
& 0x0180) ? 100 : 10, (p
& 0x0140) ? 'F' : 'H');
598 netdev_info(dev
, "link partner did not autonegotiate\n");
599 AX88190_init(dev
, 1);
601 info
->link_status
= link
;
605 info
->watchdog
.expires
= jiffies
+ HZ
;
606 add_timer(&info
->watchdog
);
609 /*====================================================================*/
611 static int axnet_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
613 axnet_dev_t
*info
= PRIV(dev
);
614 struct mii_ioctl_data
*data
= if_mii(rq
);
615 unsigned int mii_addr
= dev
->base_addr
+ AXNET_MII_EEP
;
618 data
->phy_id
= info
->phy_id
;
619 case SIOCGMIIREG
: /* Read MII PHY register. */
620 data
->val_out
= mdio_read(mii_addr
, data
->phy_id
, data
->reg_num
& 0x1f);
622 case SIOCSMIIREG
: /* Write MII PHY register. */
623 mdio_write(mii_addr
, data
->phy_id
, data
->reg_num
& 0x1f, data
->val_in
);
629 /*====================================================================*/
631 static void get_8390_hdr(struct net_device
*dev
,
632 struct e8390_pkt_hdr
*hdr
,
635 unsigned int nic_base
= dev
->base_addr
;
637 outb_p(0, nic_base
+ EN0_RSARLO
); /* On page boundary */
638 outb_p(ring_page
, nic_base
+ EN0_RSARHI
);
639 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ AXNET_CMD
);
641 insw(nic_base
+ AXNET_DATAPORT
, hdr
,
642 sizeof(struct e8390_pkt_hdr
)>>1);
643 /* Fix for big endian systems */
644 hdr
->count
= le16_to_cpu(hdr
->count
);
648 /*====================================================================*/
650 static void block_input(struct net_device
*dev
, int count
,
651 struct sk_buff
*skb
, int ring_offset
)
653 unsigned int nic_base
= dev
->base_addr
;
654 int xfer_count
= count
;
655 char *buf
= skb
->data
;
657 if ((ei_debug
> 4) && (count
!= 4))
658 pr_debug("%s: [bi=%d]\n", dev
->name
, count
+4);
659 outb_p(ring_offset
& 0xff, nic_base
+ EN0_RSARLO
);
660 outb_p(ring_offset
>> 8, nic_base
+ EN0_RSARHI
);
661 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ AXNET_CMD
);
663 insw(nic_base
+ AXNET_DATAPORT
,buf
,count
>>1);
665 buf
[count
-1] = inb(nic_base
+ AXNET_DATAPORT
), xfer_count
++;
669 /*====================================================================*/
671 static void block_output(struct net_device
*dev
, int count
,
672 const u_char
*buf
, const int start_page
)
674 unsigned int nic_base
= dev
->base_addr
;
676 pr_debug("%s: [bo=%d]\n", dev
->name
, count
);
678 /* Round the count up for word writes. Do we need to do this?
679 What effect will an odd byte count have on the 8390?
680 I should check someday. */
684 outb_p(0x00, nic_base
+ EN0_RSARLO
);
685 outb_p(start_page
, nic_base
+ EN0_RSARHI
);
686 outb_p(E8390_RWRITE
+E8390_START
, nic_base
+ AXNET_CMD
);
687 outsw(nic_base
+ AXNET_DATAPORT
, buf
, count
>>1);
690 static struct pcmcia_device_id axnet_ids
[] = {
691 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
692 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
693 PCMCIA_DEVICE_MANF_CARD(0x01bf, 0x2328),
694 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
695 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
696 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
697 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
698 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
699 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
700 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
701 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
702 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
703 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
704 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
705 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
706 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
707 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
708 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
709 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXM", 0x5261440f, 0x3abbd061),
710 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
711 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
712 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
713 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
714 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
715 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
716 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
717 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
718 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
721 MODULE_DEVICE_TABLE(pcmcia
, axnet_ids
);
723 static struct pcmcia_driver axnet_cs_driver
= {
724 .owner
= THIS_MODULE
,
726 .probe
= axnet_probe
,
727 .remove
= axnet_detach
,
728 .id_table
= axnet_ids
,
729 .suspend
= axnet_suspend
,
730 .resume
= axnet_resume
,
733 static int __init
init_axnet_cs(void)
735 return pcmcia_register_driver(&axnet_cs_driver
);
738 static void __exit
exit_axnet_cs(void)
740 pcmcia_unregister_driver(&axnet_cs_driver
);
743 module_init(init_axnet_cs
);
744 module_exit(exit_axnet_cs
);
746 /*====================================================================*/
748 /* 8390.c: A general NS8390 ethernet driver core for linux. */
750 Written 1992-94 by Donald Becker.
752 Copyright 1993 United States Government as represented by the
753 Director, National Security Agency.
755 This software may be used and distributed according to the terms
756 of the GNU General Public License, incorporated herein by reference.
758 The author may be reached as becker@scyld.com, or C/O
759 Scyld Computing Corporation
760 410 Severn Ave., Suite 210
763 This is the chip-specific code for many 8390-based ethernet adaptors.
764 This is not a complete driver, it must be combined with board-specific
765 code such as ne.c, wd.c, 3c503.c, etc.
767 Seeing how at least eight drivers use this code, (not counting the
768 PCMCIA ones either) it is easy to break some card by what seems like
769 a simple innocent change. Please contact me or Donald if you think
770 you have found something that needs changing. -- PG
774 Paul Gortmaker : remove set_bit lock, other cleanups.
775 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
776 ei_block_input() for eth_io_copy_and_sum().
777 Paul Gortmaker : exchange static int ei_pingpong for a #define,
778 also add better Tx error handling.
779 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
780 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
781 Paul Gortmaker : tweak ANK's above multicast changes a bit.
782 Paul Gortmaker : update packet statistics for v2.1.x
783 Alan Cox : support arbitary stupid port mappings on the
784 68K Macintosh. Support >16bit I/O spaces
785 Paul Gortmaker : add kmod support for auto-loading of the 8390
786 module by all drivers that require it.
787 Alan Cox : Spinlocking work, added 'BUG_83C690'
788 Paul Gortmaker : Separate out Tx timeout code from Tx path.
791 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
795 #include <linux/bitops.h>
797 #include <linux/fcntl.h>
798 #include <linux/in.h>
799 #include <linux/interrupt.h>
803 /* These are the operational function interfaces to board-specific
805 void reset_8390(struct net_device *dev)
806 Resets the board associated with DEV, including a hardware reset of
807 the 8390. This is only called when there is a transmit timeout, and
808 it is always followed by 8390_init().
809 void block_output(struct net_device *dev, int count, const unsigned char *buf,
811 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
812 "page" value uses the 8390's 256-byte pages.
813 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
814 Read the 4 byte, page aligned 8390 header. *If* there is a
815 subsequent read, it will be of the rest of the packet.
816 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
817 Read COUNT bytes from the packet buffer into the skb data area. Start
818 reading from RING_OFFSET, the address as the 8390 sees it. This will always
819 follow the read of the 8390 header.
821 #define ei_reset_8390 (ei_local->reset_8390)
822 #define ei_block_output (ei_local->block_output)
823 #define ei_block_input (ei_local->block_input)
824 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
826 /* use 0 for production, 1 for verification, >2 for debug */
831 /* Index to functions. */
832 static void ei_tx_intr(struct net_device
*dev
);
833 static void ei_tx_err(struct net_device
*dev
);
834 static void ei_receive(struct net_device
*dev
);
835 static void ei_rx_overrun(struct net_device
*dev
);
837 /* Routines generic to NS8390-based boards. */
838 static void NS8390_trigger_send(struct net_device
*dev
, unsigned int length
,
840 static void do_set_multicast_list(struct net_device
*dev
);
843 * SMP and the 8390 setup.
845 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
846 * a page register that controls bank and packet buffer access. We guard
847 * this with ei_local->page_lock. Nobody should assume or set the page other
848 * than zero when the lock is not held. Lock holders must restore page 0
849 * before unlocking. Even pure readers must take the lock to protect in
852 * To make life difficult the chip can also be very slow. We therefore can't
853 * just use spinlocks. For the longer lockups we disable the irq the device
854 * sits on and hold the lock. We must hold the lock because there is a dual
855 * processor case other than interrupts (get stats/set multicast list in
856 * parallel with each other and transmit).
858 * Note: in theory we can just disable the irq on the card _but_ there is
859 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
860 * enter lock, take the queued irq. So we waddle instead of flying.
862 * Finally by special arrangement for the purpose of being generally
863 * annoying the transmit function is called bh atomic. That places
864 * restrictions on the user context callers as disable_irq won't save
869 * ax_open - Open/initialize the board.
870 * @dev: network device to initialize
872 * This routine goes all-out, setting everything
873 * up anew at each open, even though many of these registers should only
874 * need to be set once at boot.
876 static int ax_open(struct net_device
*dev
)
879 struct ei_device
*ei_local
= netdev_priv(dev
);
882 * Grab the page lock so we own the register set, then call
886 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
887 AX88190_init(dev
, 1);
888 /* Set the flag before we drop the lock, That way the IRQ arrives
889 after its set and we get no silly warnings */
890 netif_start_queue(dev
);
891 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
892 ei_local
->irqlock
= 0;
896 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
899 * ax_close - shut down network device
900 * @dev: network device to close
902 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
904 static int ax_close(struct net_device
*dev
)
909 * Hold the page lock during close
912 spin_lock_irqsave(&dev_lock(dev
), flags
);
913 AX88190_init(dev
, 0);
914 spin_unlock_irqrestore(&dev_lock(dev
), flags
);
915 netif_stop_queue(dev
);
920 * axnet_tx_timeout - handle transmit time out condition
921 * @dev: network device which has apparently fallen asleep
923 * Called by kernel when device never acknowledges a transmit has
924 * completed (or failed) - i.e. never posted a Tx related interrupt.
927 static void axnet_tx_timeout(struct net_device
*dev
)
929 long e8390_base
= dev
->base_addr
;
930 struct ei_device
*ei_local
= netdev_priv(dev
);
931 int txsr
, isr
, tickssofar
= jiffies
- dev_trans_start(dev
);
934 dev
->stats
.tx_errors
++;
936 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
937 txsr
= inb(e8390_base
+EN0_TSR
);
938 isr
= inb(e8390_base
+EN0_ISR
);
939 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
941 netdev_printk(KERN_DEBUG
, dev
,
942 "Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
943 (txsr
& ENTSR_ABT
) ? "excess collisions." :
944 (isr
) ? "lost interrupt?" : "cable problem?",
945 txsr
, isr
, tickssofar
);
947 if (!isr
&& !dev
->stats
.tx_packets
)
949 /* The 8390 probably hasn't gotten on the cable yet. */
950 ei_local
->interface_num
^= 1; /* Try a different xcvr. */
953 /* Ugly but a reset can be slow, yet must be protected */
955 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
957 /* Try to restart the card. Perhaps the user has fixed something. */
959 AX88190_init(dev
, 1);
961 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
962 netif_wake_queue(dev
);
966 * axnet_start_xmit - begin packet transmission
967 * @skb: packet to be sent
968 * @dev: network device to which packet is sent
970 * Sends a packet to an 8390 network device.
973 static netdev_tx_t
axnet_start_xmit(struct sk_buff
*skb
,
974 struct net_device
*dev
)
976 long e8390_base
= dev
->base_addr
;
977 struct ei_device
*ei_local
= netdev_priv(dev
);
978 int length
, send_length
, output_page
;
982 netif_stop_queue(dev
);
986 /* Mask interrupts from the ethercard.
987 SMP: We have to grab the lock here otherwise the IRQ handler
988 on another CPU can flip window and race the IRQ mask set. We end
989 up trashing the mcast filter not disabling irqs if we don't lock */
991 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
992 outb_p(0x00, e8390_base
+ EN0_IMR
);
995 * Slow phase with lock held.
998 ei_local
->irqlock
= 1;
1000 send_length
= max(length
, ETH_ZLEN
);
1003 * We have two Tx slots available for use. Find the first free
1004 * slot, and then perform some sanity checks. With two Tx bufs,
1005 * you get very close to transmitting back-to-back packets. With
1006 * only one Tx buf, the transmitter sits idle while you reload the
1007 * card, leaving a substantial gap between each transmitted packet.
1010 if (ei_local
->tx1
== 0)
1012 output_page
= ei_local
->tx_start_page
;
1013 ei_local
->tx1
= send_length
;
1014 if (ei_debug
&& ei_local
->tx2
> 0)
1015 netdev_printk(KERN_DEBUG
, dev
,
1016 "idle transmitter tx2=%d, lasttx=%d, txing=%d\n",
1017 ei_local
->tx2
, ei_local
->lasttx
,
1020 else if (ei_local
->tx2
== 0)
1022 output_page
= ei_local
->tx_start_page
+ TX_PAGES
/2;
1023 ei_local
->tx2
= send_length
;
1024 if (ei_debug
&& ei_local
->tx1
> 0)
1025 netdev_printk(KERN_DEBUG
, dev
,
1026 "idle transmitter, tx1=%d, lasttx=%d, txing=%d\n",
1027 ei_local
->tx1
, ei_local
->lasttx
,
1031 { /* We should never get here. */
1033 netdev_printk(KERN_DEBUG
, dev
,
1034 "No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1035 ei_local
->tx1
, ei_local
->tx2
,
1037 ei_local
->irqlock
= 0;
1038 netif_stop_queue(dev
);
1039 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1040 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1041 dev
->stats
.tx_errors
++;
1042 return NETDEV_TX_BUSY
;
1046 * Okay, now upload the packet and trigger a send if the transmitter
1047 * isn't already sending. If it is busy, the interrupt handler will
1048 * trigger the send later, upon receiving a Tx done interrupt.
1051 if (length
== skb
->len
)
1052 ei_block_output(dev
, length
, skb
->data
, output_page
);
1054 memset(packet
, 0, ETH_ZLEN
);
1055 skb_copy_from_linear_data(skb
, packet
, skb
->len
);
1056 ei_block_output(dev
, length
, packet
, output_page
);
1059 if (! ei_local
->txing
)
1061 ei_local
->txing
= 1;
1062 NS8390_trigger_send(dev
, send_length
, output_page
);
1063 dev
->trans_start
= jiffies
;
1064 if (output_page
== ei_local
->tx_start_page
)
1067 ei_local
->lasttx
= -1;
1072 ei_local
->lasttx
= -2;
1075 else ei_local
->txqueue
++;
1077 if (ei_local
->tx1
&& ei_local
->tx2
)
1078 netif_stop_queue(dev
);
1080 netif_start_queue(dev
);
1082 /* Turn 8390 interrupts back on. */
1083 ei_local
->irqlock
= 0;
1084 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1086 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1088 dev_kfree_skb (skb
);
1089 dev
->stats
.tx_bytes
+= send_length
;
1091 return NETDEV_TX_OK
;
1095 * ax_interrupt - handle the interrupts from an 8390
1096 * @irq: interrupt number
1097 * @dev_id: a pointer to the net_device
1099 * Handle the ether interface interrupts. We pull packets from
1100 * the 8390 via the card specific functions and fire them at the networking
1101 * stack. We also handle transmit completions and wake the transmit path if
1102 * necessary. We also update the counters and do other housekeeping as
1106 static irqreturn_t
ax_interrupt(int irq
, void *dev_id
)
1108 struct net_device
*dev
= dev_id
;
1110 int interrupts
, nr_serviced
= 0, i
;
1111 struct ei_device
*ei_local
;
1113 unsigned long flags
;
1115 e8390_base
= dev
->base_addr
;
1116 ei_local
= netdev_priv(dev
);
1119 * Protect the irq test too.
1122 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
1124 if (ei_local
->irqlock
) {
1125 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1127 /* The "irqlock" check is only for testing. */
1128 if (ei_local
->irqlock
)
1129 msg
= "Interrupted while interrupts are masked!";
1131 msg
= "Reentering the interrupt handler!";
1132 netdev_info(dev
, "%s, isr=%#2x imr=%#2x\n",
1134 inb_p(e8390_base
+ EN0_ISR
),
1135 inb_p(e8390_base
+ EN0_IMR
));
1137 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1142 netdev_printk(KERN_DEBUG
, dev
, "interrupt(isr=%#2.2x)\n",
1143 inb_p(e8390_base
+ EN0_ISR
));
1145 outb_p(0x00, e8390_base
+ EN0_ISR
);
1146 ei_local
->irqlock
= 1;
1148 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1149 while ((interrupts
= inb_p(e8390_base
+ EN0_ISR
)) != 0 &&
1150 ++nr_serviced
< MAX_SERVICE
)
1152 if (!netif_running(dev
) || (interrupts
== 0xff)) {
1155 "interrupt from stopped card\n");
1156 outb_p(interrupts
, e8390_base
+ EN0_ISR
);
1162 /* AX88190 bug fix. */
1163 outb_p(interrupts
, e8390_base
+ EN0_ISR
);
1164 for (i
= 0; i
< 10; i
++) {
1165 if (!(inb(e8390_base
+ EN0_ISR
) & interrupts
))
1167 outb_p(0, e8390_base
+ EN0_ISR
);
1168 outb_p(interrupts
, e8390_base
+ EN0_ISR
);
1170 if (interrupts
& ENISR_OVER
)
1172 else if (interrupts
& (ENISR_RX
+ENISR_RX_ERR
))
1174 /* Got a good (?) packet. */
1177 /* Push the next to-transmit packet through. */
1178 if (interrupts
& ENISR_TX
)
1180 else if (interrupts
& ENISR_TX_ERR
)
1183 if (interrupts
& ENISR_COUNTERS
)
1185 dev
->stats
.rx_frame_errors
+= inb_p(e8390_base
+ EN0_COUNTER0
);
1186 dev
->stats
.rx_crc_errors
+= inb_p(e8390_base
+ EN0_COUNTER1
);
1187 dev
->stats
.rx_missed_errors
+= inb_p(e8390_base
+ EN0_COUNTER2
);
1191 if (interrupts
&& ei_debug
> 3)
1194 if (nr_serviced
>= MAX_SERVICE
)
1196 /* 0xFF is valid for a card removal */
1197 if(interrupts
!=0xFF)
1198 netdev_warn(dev
, "Too much work at interrupt, status %#2.2x\n",
1200 outb_p(ENISR_ALL
, e8390_base
+ EN0_ISR
); /* Ack. most intrs. */
1202 netdev_warn(dev
, "unknown interrupt %#2x\n",
1204 outb_p(0xff, e8390_base
+ EN0_ISR
); /* Ack. all intrs. */
1208 /* Turn 8390 interrupts back on. */
1209 ei_local
->irqlock
= 0;
1210 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1212 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1213 return IRQ_RETVAL(handled
);
1217 * ei_tx_err - handle transmitter error
1218 * @dev: network device which threw the exception
1220 * A transmitter error has happened. Most likely excess collisions (which
1221 * is a fairly normal condition). If the error is one where the Tx will
1222 * have been aborted, we try and send another one right away, instead of
1223 * letting the failed packet sit and collect dust in the Tx buffer. This
1224 * is a much better solution as it avoids kernel based Tx timeouts, and
1225 * an unnecessary card reset.
1227 * Called with lock held.
1230 static void ei_tx_err(struct net_device
*dev
)
1232 long e8390_base
= dev
->base_addr
;
1233 unsigned char txsr
= inb_p(e8390_base
+EN0_TSR
);
1234 unsigned char tx_was_aborted
= txsr
& (ENTSR_ABT
+ENTSR_FU
);
1236 #ifdef VERBOSE_ERROR_DUMP
1237 netdev_printk(KERN_DEBUG
, dev
,
1238 "transmitter error (%#2x):", txsr
);
1239 if (txsr
& ENTSR_ABT
)
1240 pr_cont(" excess-collisions");
1241 if (txsr
& ENTSR_ND
)
1242 pr_cont(" non-deferral");
1243 if (txsr
& ENTSR_CRS
)
1244 pr_cont(" lost-carrier");
1245 if (txsr
& ENTSR_FU
)
1246 pr_cont(" FIFO-underrun");
1247 if (txsr
& ENTSR_CDH
)
1248 pr_cont(" lost-heartbeat");
1256 dev
->stats
.tx_errors
++;
1257 if (txsr
& ENTSR_CRS
) dev
->stats
.tx_carrier_errors
++;
1258 if (txsr
& ENTSR_CDH
) dev
->stats
.tx_heartbeat_errors
++;
1259 if (txsr
& ENTSR_OWC
) dev
->stats
.tx_window_errors
++;
1264 * ei_tx_intr - transmit interrupt handler
1265 * @dev: network device for which tx intr is handled
1267 * We have finished a transmit: check for errors and then trigger the next
1268 * packet to be sent. Called with lock held.
1271 static void ei_tx_intr(struct net_device
*dev
)
1273 long e8390_base
= dev
->base_addr
;
1274 struct ei_device
*ei_local
= netdev_priv(dev
);
1275 int status
= inb(e8390_base
+ EN0_TSR
);
1278 * There are two Tx buffers, see which one finished, and trigger
1279 * the send of another one if it exists.
1281 ei_local
->txqueue
--;
1283 if (ei_local
->tx1
< 0)
1285 if (ei_local
->lasttx
!= 1 && ei_local
->lasttx
!= -1)
1286 netdev_err(dev
, "%s: bogus last_tx_buffer %d, tx1=%d\n",
1287 ei_local
->name
, ei_local
->lasttx
,
1290 if (ei_local
->tx2
> 0)
1292 ei_local
->txing
= 1;
1293 NS8390_trigger_send(dev
, ei_local
->tx2
, ei_local
->tx_start_page
+ 6);
1294 dev
->trans_start
= jiffies
;
1296 ei_local
->lasttx
= 2;
1298 else ei_local
->lasttx
= 20, ei_local
->txing
= 0;
1300 else if (ei_local
->tx2
< 0)
1302 if (ei_local
->lasttx
!= 2 && ei_local
->lasttx
!= -2)
1303 netdev_info(dev
, "%s: bogus last_tx_buffer %d, tx2=%d\n",
1304 ei_local
->name
, ei_local
->lasttx
,
1307 if (ei_local
->tx1
> 0)
1309 ei_local
->txing
= 1;
1310 NS8390_trigger_send(dev
, ei_local
->tx1
, ei_local
->tx_start_page
);
1311 dev
->trans_start
= jiffies
;
1313 ei_local
->lasttx
= 1;
1316 ei_local
->lasttx
= 10, ei_local
->txing
= 0;
1319 // netdev_warn(dev, "unexpected TX-done interrupt, lasttx=%d\n",
1320 // ei_local->lasttx);
1322 /* Minimize Tx latency: update the statistics after we restart TXing. */
1323 if (status
& ENTSR_COL
)
1324 dev
->stats
.collisions
++;
1325 if (status
& ENTSR_PTX
)
1326 dev
->stats
.tx_packets
++;
1329 dev
->stats
.tx_errors
++;
1330 if (status
& ENTSR_ABT
)
1332 dev
->stats
.tx_aborted_errors
++;
1333 dev
->stats
.collisions
+= 16;
1335 if (status
& ENTSR_CRS
)
1336 dev
->stats
.tx_carrier_errors
++;
1337 if (status
& ENTSR_FU
)
1338 dev
->stats
.tx_fifo_errors
++;
1339 if (status
& ENTSR_CDH
)
1340 dev
->stats
.tx_heartbeat_errors
++;
1341 if (status
& ENTSR_OWC
)
1342 dev
->stats
.tx_window_errors
++;
1344 netif_wake_queue(dev
);
1348 * ei_receive - receive some packets
1349 * @dev: network device with which receive will be run
1351 * We have a good packet(s), get it/them out of the buffers.
1352 * Called with lock held.
1355 static void ei_receive(struct net_device
*dev
)
1357 long e8390_base
= dev
->base_addr
;
1358 struct ei_device
*ei_local
= netdev_priv(dev
);
1359 unsigned char rxing_page
, this_frame
, next_frame
;
1360 unsigned short current_offset
;
1361 int rx_pkt_count
= 0;
1362 struct e8390_pkt_hdr rx_frame
;
1364 while (++rx_pkt_count
< 10)
1366 int pkt_len
, pkt_stat
;
1368 /* Get the rx page (incoming packet pointer). */
1369 rxing_page
= inb_p(e8390_base
+ EN1_CURPAG
-1);
1371 /* Remove one frame from the ring. Boundary is always a page behind. */
1372 this_frame
= inb_p(e8390_base
+ EN0_BOUNDARY
) + 1;
1373 if (this_frame
>= ei_local
->stop_page
)
1374 this_frame
= ei_local
->rx_start_page
;
1376 /* Someday we'll omit the previous, iff we never get this message.
1377 (There is at least one clone claimed to have a problem.)
1379 Keep quiet if it looks like a card removal. One problem here
1380 is that some clones crash in roughly the same way.
1382 if (ei_debug
> 0 && this_frame
!= ei_local
->current_page
&& (this_frame
!=0x0 || rxing_page
!=0xFF))
1383 netdev_err(dev
, "mismatched read page pointers %2x vs %2x\n",
1384 this_frame
, ei_local
->current_page
);
1386 if (this_frame
== rxing_page
) /* Read all the frames? */
1387 break; /* Done for now */
1389 current_offset
= this_frame
<< 8;
1390 ei_get_8390_hdr(dev
, &rx_frame
, this_frame
);
1392 pkt_len
= rx_frame
.count
- sizeof(struct e8390_pkt_hdr
);
1393 pkt_stat
= rx_frame
.status
;
1395 next_frame
= this_frame
+ 1 + ((pkt_len
+4)>>8);
1397 if (pkt_len
< 60 || pkt_len
> 1518)
1400 netdev_printk(KERN_DEBUG
, dev
,
1401 "bogus packet size: %d, status=%#2x nxpg=%#2x\n",
1402 rx_frame
.count
, rx_frame
.status
,
1404 dev
->stats
.rx_errors
++;
1405 dev
->stats
.rx_length_errors
++;
1407 else if ((pkt_stat
& 0x0F) == ENRSR_RXOK
)
1409 struct sk_buff
*skb
;
1411 skb
= dev_alloc_skb(pkt_len
+2);
1415 netdev_printk(KERN_DEBUG
, dev
,
1416 "Couldn't allocate a sk_buff of size %d\n",
1418 dev
->stats
.rx_dropped
++;
1423 skb_reserve(skb
,2); /* IP headers on 16 byte boundaries */
1424 skb_put(skb
, pkt_len
); /* Make room */
1425 ei_block_input(dev
, pkt_len
, skb
, current_offset
+ sizeof(rx_frame
));
1426 skb
->protocol
=eth_type_trans(skb
,dev
);
1428 dev
->stats
.rx_packets
++;
1429 dev
->stats
.rx_bytes
+= pkt_len
;
1430 if (pkt_stat
& ENRSR_PHY
)
1431 dev
->stats
.multicast
++;
1437 netdev_printk(KERN_DEBUG
, dev
,
1438 "bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1439 rx_frame
.status
, rx_frame
.next
,
1441 dev
->stats
.rx_errors
++;
1442 /* NB: The NIC counts CRC, frame and missed errors. */
1443 if (pkt_stat
& ENRSR_FO
)
1444 dev
->stats
.rx_fifo_errors
++;
1446 next_frame
= rx_frame
.next
;
1448 /* This _should_ never happen: it's here for avoiding bad clones. */
1449 if (next_frame
>= ei_local
->stop_page
) {
1450 netdev_info(dev
, "next frame inconsistency, %#2x\n",
1452 next_frame
= ei_local
->rx_start_page
;
1454 ei_local
->current_page
= next_frame
;
1455 outb_p(next_frame
-1, e8390_base
+EN0_BOUNDARY
);
1460 * ei_rx_overrun - handle receiver overrun
1461 * @dev: network device which threw exception
1463 * We have a receiver overrun: we have to kick the 8390 to get it started
1464 * again. Problem is that you have to kick it exactly as NS prescribes in
1465 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1466 * This includes causing "the NIC to defer indefinitely when it is stopped
1467 * on a busy network." Ugh.
1468 * Called with lock held. Don't call this with the interrupts off or your
1469 * computer will hate you - it takes 10ms or so.
1472 static void ei_rx_overrun(struct net_device
*dev
)
1474 axnet_dev_t
*info
= PRIV(dev
);
1475 long e8390_base
= dev
->base_addr
;
1476 unsigned char was_txing
, must_resend
= 0;
1479 * Record whether a Tx was in progress and then issue the
1482 was_txing
= inb_p(e8390_base
+E8390_CMD
) & E8390_TRANS
;
1483 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, e8390_base
+E8390_CMD
);
1486 netdev_printk(KERN_DEBUG
, dev
, "Receiver overrun\n");
1487 dev
->stats
.rx_over_errors
++;
1490 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1491 * Early datasheets said to poll the reset bit, but now they say that
1492 * it "is not a reliable indicator and subsequently should be ignored."
1493 * We wait at least 10ms.
1499 * Reset RBCR[01] back to zero as per magic incantation.
1501 outb_p(0x00, e8390_base
+EN0_RCNTLO
);
1502 outb_p(0x00, e8390_base
+EN0_RCNTHI
);
1505 * See if any Tx was interrupted or not. According to NS, this
1506 * step is vital, and skipping it will cause no end of havoc.
1511 unsigned char tx_completed
= inb_p(e8390_base
+EN0_ISR
) & (ENISR_TX
+ENISR_TX_ERR
);
1517 * Have to enter loopback mode and then restart the NIC before
1518 * you are allowed to slurp packets up off the ring.
1520 outb_p(E8390_TXOFF
, e8390_base
+ EN0_TXCR
);
1521 outb_p(E8390_NODMA
+ E8390_PAGE0
+ E8390_START
, e8390_base
+ E8390_CMD
);
1524 * Clear the Rx ring of all the debris, and ack the interrupt.
1529 * Leave loopback mode, and resend any packet that got stopped.
1531 outb_p(E8390_TXCONFIG
| info
->duplex_flag
, e8390_base
+ EN0_TXCR
);
1533 outb_p(E8390_NODMA
+ E8390_PAGE0
+ E8390_START
+ E8390_TRANS
, e8390_base
+ E8390_CMD
);
1537 * Collect the stats. This is called unlocked and from several contexts.
1540 static struct net_device_stats
*get_stats(struct net_device
*dev
)
1542 long ioaddr
= dev
->base_addr
;
1543 struct ei_device
*ei_local
= netdev_priv(dev
);
1544 unsigned long flags
;
1546 /* If the card is stopped, just return the present stats. */
1547 if (!netif_running(dev
))
1550 spin_lock_irqsave(&ei_local
->page_lock
,flags
);
1551 /* Read the counter registers, assuming we are in page 0. */
1552 dev
->stats
.rx_frame_errors
+= inb_p(ioaddr
+ EN0_COUNTER0
);
1553 dev
->stats
.rx_crc_errors
+= inb_p(ioaddr
+ EN0_COUNTER1
);
1554 dev
->stats
.rx_missed_errors
+= inb_p(ioaddr
+ EN0_COUNTER2
);
1555 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1561 * Form the 64 bit 8390 multicast table from the linked list of addresses
1562 * associated with this dev structure.
1565 static inline void make_mc_bits(u8
*bits
, struct net_device
*dev
)
1567 struct netdev_hw_addr
*ha
;
1570 netdev_for_each_mc_addr(ha
, dev
) {
1571 crc
= ether_crc(ETH_ALEN
, ha
->addr
);
1573 * The 8390 uses the 6 most significant bits of the
1574 * CRC to index the multicast table.
1576 bits
[crc
>>29] |= (1<<((crc
>>26)&7));
1581 * do_set_multicast_list - set/clear multicast filter
1582 * @dev: net device for which multicast filter is adjusted
1584 * Set or clear the multicast filter for this adaptor.
1585 * Must be called with lock held.
1588 static void do_set_multicast_list(struct net_device
*dev
)
1590 long e8390_base
= dev
->base_addr
;
1592 struct ei_device
*ei_local
= netdev_priv(dev
);
1594 if (!(dev
->flags
&(IFF_PROMISC
|IFF_ALLMULTI
))) {
1595 memset(ei_local
->mcfilter
, 0, 8);
1596 if (!netdev_mc_empty(dev
))
1597 make_mc_bits(ei_local
->mcfilter
, dev
);
1599 /* set to accept-all */
1600 memset(ei_local
->mcfilter
, 0xFF, 8);
1603 outb_p(E8390_NODMA
+ E8390_PAGE1
, e8390_base
+ E8390_CMD
);
1604 for(i
= 0; i
< 8; i
++)
1606 outb_p(ei_local
->mcfilter
[i
], e8390_base
+ EN1_MULT_SHIFT(i
));
1608 outb_p(E8390_NODMA
+ E8390_PAGE0
, e8390_base
+ E8390_CMD
);
1610 if(dev
->flags
&IFF_PROMISC
)
1611 outb_p(E8390_RXCONFIG
| 0x58, e8390_base
+ EN0_RXCR
);
1612 else if (dev
->flags
& IFF_ALLMULTI
|| !netdev_mc_empty(dev
))
1613 outb_p(E8390_RXCONFIG
| 0x48, e8390_base
+ EN0_RXCR
);
1615 outb_p(E8390_RXCONFIG
| 0x40, e8390_base
+ EN0_RXCR
);
1617 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, e8390_base
+E8390_CMD
);
1621 * Called without lock held. This is invoked from user context and may
1622 * be parallel to just about everything else. Its also fairly quick and
1623 * not called too often. Must protect against both bh and irq users
1626 static void set_multicast_list(struct net_device
*dev
)
1628 unsigned long flags
;
1630 spin_lock_irqsave(&dev_lock(dev
), flags
);
1631 do_set_multicast_list(dev
);
1632 spin_unlock_irqrestore(&dev_lock(dev
), flags
);
1635 /* This page of functions should be 8390 generic */
1636 /* Follow National Semi's recommendations for initializing the "NIC". */
1639 * AX88190_init - initialize 8390 hardware
1640 * @dev: network device to initialize
1641 * @startp: boolean. non-zero value to initiate chip processing
1643 * Must be called with lock held.
1646 static void AX88190_init(struct net_device
*dev
, int startp
)
1648 axnet_dev_t
*info
= PRIV(dev
);
1649 long e8390_base
= dev
->base_addr
;
1650 struct ei_device
*ei_local
= netdev_priv(dev
);
1652 int endcfg
= ei_local
->word16
? (0x48 | ENDCFG_WTS
) : 0x48;
1654 if(sizeof(struct e8390_pkt_hdr
)!=4)
1655 panic("8390.c: header struct mispacked\n");
1656 /* Follow National Semi's recommendations for initing the DP83902. */
1657 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, e8390_base
+E8390_CMD
); /* 0x21 */
1658 outb_p(endcfg
, e8390_base
+ EN0_DCFG
); /* 0x48 or 0x49 */
1659 /* Clear the remote byte count registers. */
1660 outb_p(0x00, e8390_base
+ EN0_RCNTLO
);
1661 outb_p(0x00, e8390_base
+ EN0_RCNTHI
);
1662 /* Set to monitor and loopback mode -- this is vital!. */
1663 outb_p(E8390_RXOFF
|0x40, e8390_base
+ EN0_RXCR
); /* 0x60 */
1664 outb_p(E8390_TXOFF
, e8390_base
+ EN0_TXCR
); /* 0x02 */
1665 /* Set the transmit page and receive ring. */
1666 outb_p(ei_local
->tx_start_page
, e8390_base
+ EN0_TPSR
);
1667 ei_local
->tx1
= ei_local
->tx2
= 0;
1668 outb_p(ei_local
->rx_start_page
, e8390_base
+ EN0_STARTPG
);
1669 outb_p(ei_local
->stop_page
-1, e8390_base
+ EN0_BOUNDARY
); /* 3c503 says 0x3f,NS0x26*/
1670 ei_local
->current_page
= ei_local
->rx_start_page
; /* assert boundary+1 */
1671 outb_p(ei_local
->stop_page
, e8390_base
+ EN0_STOPPG
);
1672 /* Clear the pending interrupts and mask. */
1673 outb_p(0xFF, e8390_base
+ EN0_ISR
);
1674 outb_p(0x00, e8390_base
+ EN0_IMR
);
1676 /* Copy the station address into the DS8390 registers. */
1678 outb_p(E8390_NODMA
+ E8390_PAGE1
+ E8390_STOP
, e8390_base
+E8390_CMD
); /* 0x61 */
1679 for(i
= 0; i
< 6; i
++)
1681 outb_p(dev
->dev_addr
[i
], e8390_base
+ EN1_PHYS_SHIFT(i
));
1682 if(inb_p(e8390_base
+ EN1_PHYS_SHIFT(i
))!=dev
->dev_addr
[i
])
1683 netdev_err(dev
, "Hw. address read/write mismap %d\n", i
);
1686 outb_p(ei_local
->rx_start_page
, e8390_base
+ EN1_CURPAG
);
1687 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, e8390_base
+E8390_CMD
);
1689 netif_start_queue(dev
);
1690 ei_local
->tx1
= ei_local
->tx2
= 0;
1691 ei_local
->txing
= 0;
1693 if (info
->flags
& IS_AX88790
) /* select Internal PHY */
1694 outb(0x10, e8390_base
+ AXNET_GPIO
);
1698 outb_p(0xff, e8390_base
+ EN0_ISR
);
1699 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1700 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, e8390_base
+E8390_CMD
);
1701 outb_p(E8390_TXCONFIG
| info
->duplex_flag
,
1702 e8390_base
+ EN0_TXCR
); /* xmit on. */
1703 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1704 outb_p(E8390_RXCONFIG
| 0x40, e8390_base
+ EN0_RXCR
); /* rx on, */
1705 do_set_multicast_list(dev
); /* (re)load the mcast table */
1709 /* Trigger a transmit start, assuming the length is valid.
1710 Always called with the page lock held */
1712 static void NS8390_trigger_send(struct net_device
*dev
, unsigned int length
,
1715 long e8390_base
= dev
->base_addr
;
1716 struct ei_device
*ei_local
__attribute((unused
)) = netdev_priv(dev
);
1718 if (inb_p(e8390_base
) & E8390_TRANS
)
1720 netdev_warn(dev
, "trigger_send() called with the transmitter busy\n");
1723 outb_p(length
& 0xff, e8390_base
+ EN0_TCNTLO
);
1724 outb_p(length
>> 8, e8390_base
+ EN0_TCNTHI
);
1725 outb_p(start_page
, e8390_base
+ EN0_TPSR
);
1726 outb_p(E8390_NODMA
+E8390_TRANS
+E8390_START
, e8390_base
+E8390_CMD
);