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 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/ptrace.h>
31 #include <linux/string.h>
32 #include <linux/timer.h>
33 #include <linux/delay.h>
34 #include <linux/spinlock.h>
35 #include <linux/ethtool.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/crc32.h>
39 #include <linux/mii.h>
42 #include <pcmcia/cistpl.h>
43 #include <pcmcia/ciscode.h>
44 #include <pcmcia/ds.h>
45 #include <pcmcia/cisreg.h>
48 #include <asm/system.h>
49 #include <asm/byteorder.h>
50 #include <asm/uaccess.h>
52 #define AXNET_CMD 0x00
53 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
54 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
55 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
56 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
57 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
59 #define AXNET_START_PG 0x40 /* First page of TX buffer */
60 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
62 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
64 #define IS_AX88190 0x0001
65 #define IS_AX88790 0x0002
67 /*====================================================================*/
69 /* Module parameters */
71 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
72 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
73 MODULE_LICENSE("GPL");
76 /*====================================================================*/
78 static int axnet_config(struct pcmcia_device
*link
);
79 static void axnet_release(struct pcmcia_device
*link
);
80 static int axnet_open(struct net_device
*dev
);
81 static int axnet_close(struct net_device
*dev
);
82 static int axnet_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
83 static netdev_tx_t
axnet_start_xmit(struct sk_buff
*skb
,
84 struct net_device
*dev
);
85 static struct net_device_stats
*get_stats(struct net_device
*dev
);
86 static void set_multicast_list(struct net_device
*dev
);
87 static void axnet_tx_timeout(struct net_device
*dev
);
88 static const struct ethtool_ops netdev_ethtool_ops
;
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
;
123 static inline axnet_dev_t
*PRIV(struct net_device
*dev
)
125 void *p
= (char *)netdev_priv(dev
) + sizeof(struct ei_device
);
129 static const struct net_device_ops axnet_netdev_ops
= {
130 .ndo_open
= axnet_open
,
131 .ndo_stop
= axnet_close
,
132 .ndo_do_ioctl
= axnet_ioctl
,
133 .ndo_start_xmit
= axnet_start_xmit
,
134 .ndo_tx_timeout
= axnet_tx_timeout
,
135 .ndo_get_stats
= get_stats
,
136 .ndo_set_multicast_list
= set_multicast_list
,
137 .ndo_change_mtu
= eth_change_mtu
,
138 .ndo_set_mac_address
= eth_mac_addr
,
139 .ndo_validate_addr
= eth_validate_addr
,
142 /*======================================================================
144 axnet_attach() creates an "instance" of the driver, allocating
145 local data structures for one device. The device is registered
148 ======================================================================*/
150 static int axnet_probe(struct pcmcia_device
*link
)
153 struct net_device
*dev
;
154 struct ei_device
*ei_local
;
156 dev_dbg(&link
->dev
, "axnet_attach()\n");
158 dev
= alloc_etherdev(sizeof(struct ei_device
) + sizeof(axnet_dev_t
));
162 ei_local
= netdev_priv(dev
);
163 spin_lock_init(&ei_local
->page_lock
);
168 link
->config_flags
|= CONF_ENABLE_IRQ
;
170 dev
->netdev_ops
= &axnet_netdev_ops
;
172 SET_ETHTOOL_OPS(dev
, &netdev_ethtool_ops
);
173 dev
->watchdog_timeo
= TX_TIMEOUT
;
175 return axnet_config(link
);
178 /*======================================================================
180 This deletes a driver "instance". The device is de-registered
181 with Card Services. If it has been released, all local data
182 structures are freed. Otherwise, the structures will be freed
183 when the device is released.
185 ======================================================================*/
187 static void axnet_detach(struct pcmcia_device
*link
)
189 struct net_device
*dev
= link
->priv
;
191 dev_dbg(&link
->dev
, "axnet_detach(0x%p)\n", link
);
193 unregister_netdev(dev
);
200 /*======================================================================
202 This probes for a card's hardware address by reading the PROM.
204 ======================================================================*/
206 static int get_prom(struct pcmcia_device
*link
)
208 struct net_device
*dev
= link
->priv
;
209 unsigned int ioaddr
= dev
->base_addr
;
212 /* This is based on drivers/net/ne.c */
214 u_char value
, offset
;
216 {E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, E8390_CMD
}, /* Select page 0*/
217 {0x01, EN0_DCFG
}, /* Set word-wide access. */
218 {0x00, EN0_RCNTLO
}, /* Clear the count regs. */
220 {0x00, EN0_IMR
}, /* Mask completion irq. */
222 {E8390_RXOFF
|0x40, EN0_RXCR
}, /* 0x60 Set to monitor */
223 {E8390_TXOFF
, EN0_TXCR
}, /* 0x02 and loopback mode. */
226 {0x00, EN0_RSARLO
}, /* DMA starting at 0x0400. */
228 {E8390_RREAD
+E8390_START
, E8390_CMD
},
231 /* Not much of a test, but the alternatives are messy */
232 if (link
->config_base
!= 0x03c0)
235 axnet_reset_8390(dev
);
238 for (i
= 0; i
< ARRAY_SIZE(program_seq
); i
++)
239 outb_p(program_seq
[i
].value
, ioaddr
+ program_seq
[i
].offset
);
241 for (i
= 0; i
< 6; i
+= 2) {
242 j
= inw(ioaddr
+ AXNET_DATAPORT
);
243 dev
->dev_addr
[i
] = j
& 0xff;
244 dev
->dev_addr
[i
+1] = j
>> 8;
249 /*======================================================================
251 axnet_config() is scheduled to run after a CARD_INSERTION event
252 is received, to configure the PCMCIA socket, and to make the
253 ethernet device available to the system.
255 ======================================================================*/
257 static int try_io_port(struct pcmcia_device
*link
)
260 link
->resource
[0]->flags
&= ~IO_DATA_PATH_WIDTH
;
261 link
->resource
[1]->flags
&= ~IO_DATA_PATH_WIDTH
;
262 if (link
->resource
[0]->end
== 32) {
263 link
->resource
[0]->flags
|= IO_DATA_PATH_WIDTH_AUTO
;
264 /* for master/slave multifunction cards */
265 if (link
->resource
[1]->end
> 0)
266 link
->resource
[1]->flags
|= IO_DATA_PATH_WIDTH_8
;
268 /* This should be two 16-port windows */
269 link
->resource
[0]->flags
|= IO_DATA_PATH_WIDTH_8
;
270 link
->resource
[1]->flags
|= IO_DATA_PATH_WIDTH_16
;
272 if (link
->resource
[0]->start
== 0) {
273 for (j
= 0; j
< 0x400; j
+= 0x20) {
274 link
->resource
[0]->start
= j
^ 0x300;
275 link
->resource
[1]->start
= (j
^ 0x300) + 0x10;
277 ret
= pcmcia_request_io(link
);
283 return pcmcia_request_io(link
);
287 static int axnet_configcheck(struct pcmcia_device
*p_dev
,
288 cistpl_cftable_entry_t
*cfg
,
289 cistpl_cftable_entry_t
*dflt
,
294 cistpl_io_t
*io
= &cfg
->io
;
296 if (cfg
->index
== 0 || cfg
->io
.nwin
== 0)
299 p_dev
->config_index
= 0x05;
300 /* For multifunction cards, by convention, we configure the
301 network function with window 0, and serial with window 1 */
303 i
= (io
->win
[1].len
> io
->win
[0].len
);
304 p_dev
->resource
[1]->start
= io
->win
[1-i
].base
;
305 p_dev
->resource
[1]->end
= io
->win
[1-i
].len
;
307 i
= p_dev
->resource
[1]->end
= 0;
309 p_dev
->resource
[0]->start
= io
->win
[i
].base
;
310 p_dev
->resource
[0]->end
= io
->win
[i
].len
;
311 p_dev
->io_lines
= io
->flags
& CISTPL_IO_LINES_MASK
;
312 if (p_dev
->resource
[0]->end
+ p_dev
->resource
[1]->end
>= 32)
313 return try_io_port(p_dev
);
318 static int axnet_config(struct pcmcia_device
*link
)
320 struct net_device
*dev
= link
->priv
;
321 axnet_dev_t
*info
= PRIV(dev
);
324 dev_dbg(&link
->dev
, "axnet_config(0x%p)\n", link
);
326 /* don't trust the CIS on this; Linksys got it wrong */
327 link
->config_regs
= 0x63;
328 ret
= pcmcia_loop_config(link
, axnet_configcheck
, NULL
);
335 link
->config_flags
|= CONF_ENABLE_IRQ
;
336 if (resource_size(link
->resource
[1]) == 8)
337 link
->config_flags
|= CONF_ENABLE_SPKR
;
339 ret
= pcmcia_enable_device(link
);
343 dev
->irq
= link
->irq
;
344 dev
->base_addr
= link
->resource
[0]->start
;
346 if (!get_prom(link
)) {
347 printk(KERN_NOTICE
"axnet_cs: this is not an AX88190 card!\n");
348 printk(KERN_NOTICE
"axnet_cs: use pcnet_cs instead.\n");
352 ei_status
.name
= "AX88190";
353 ei_status
.word16
= 1;
354 ei_status
.tx_start_page
= AXNET_START_PG
;
355 ei_status
.rx_start_page
= AXNET_START_PG
+ TX_PAGES
;
356 ei_status
.stop_page
= AXNET_STOP_PG
;
357 ei_status
.reset_8390
= &axnet_reset_8390
;
358 ei_status
.get_8390_hdr
= &get_8390_hdr
;
359 ei_status
.block_input
= &block_input
;
360 ei_status
.block_output
= &block_output
;
362 if (inb(dev
->base_addr
+ AXNET_TEST
) != 0)
363 info
->flags
|= IS_AX88790
;
365 info
->flags
|= IS_AX88190
;
367 if (info
->flags
& IS_AX88790
)
368 outb(0x10, dev
->base_addr
+ AXNET_GPIO
); /* select Internal PHY */
370 for (i
= 0; i
< 32; i
++) {
371 j
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 1);
372 j2
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 2);
373 if (j
== j2
) continue;
374 if ((j
!= 0) && (j
!= 0xffff)) break;
377 /* Maybe PHY is in power down mode. (PPD_SET = 1)
378 Bit 2 of CCSR is active low. */
380 pcmcia_write_config_byte(link
, CISREG_CCSR
, 0x04);
381 for (i
= 0; i
< 32; i
++) {
382 j
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 1);
383 j2
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 2);
384 if (j
== j2
) continue;
385 if ((j
!= 0) && (j
!= 0xffff)) break;
389 info
->phy_id
= (i
< 32) ? i
: -1;
390 SET_NETDEV_DEV(dev
, &link
->dev
);
392 if (register_netdev(dev
) != 0) {
393 printk(KERN_NOTICE
"axnet_cs: register_netdev() failed\n");
397 printk(KERN_INFO
"%s: Asix AX88%d90: io %#3lx, irq %d, "
399 dev
->name
, ((info
->flags
& IS_AX88790
) ? 7 : 1),
400 dev
->base_addr
, dev
->irq
,
402 if (info
->phy_id
!= -1) {
403 dev_dbg(&link
->dev
, " MII transceiver at index %d, status %x.\n", info
->phy_id
, j
);
405 printk(KERN_NOTICE
" No MII transceivers found!\n");
414 /*======================================================================
416 After a card is removed, axnet_release() will unregister the net
417 device, and release the PCMCIA configuration. If the device is
418 still open, this will be postponed until it is closed.
420 ======================================================================*/
422 static void axnet_release(struct pcmcia_device
*link
)
424 pcmcia_disable_device(link
);
427 static int axnet_suspend(struct pcmcia_device
*link
)
429 struct net_device
*dev
= link
->priv
;
432 netif_device_detach(dev
);
437 static int axnet_resume(struct pcmcia_device
*link
)
439 struct net_device
*dev
= link
->priv
;
442 axnet_reset_8390(dev
);
443 AX88190_init(dev
, 1);
444 netif_device_attach(dev
);
451 /*======================================================================
453 MII interface support
455 ======================================================================*/
457 #define MDIO_SHIFT_CLK 0x01
458 #define MDIO_DATA_WRITE0 0x00
459 #define MDIO_DATA_WRITE1 0x08
460 #define MDIO_DATA_READ 0x04
461 #define MDIO_MASK 0x0f
462 #define MDIO_ENB_IN 0x02
464 static void mdio_sync(unsigned int addr
)
467 for (bits
= 0; bits
< 32; bits
++) {
468 outb_p(MDIO_DATA_WRITE1
, addr
);
469 outb_p(MDIO_DATA_WRITE1
| MDIO_SHIFT_CLK
, addr
);
473 static int mdio_read(unsigned int addr
, int phy_id
, int loc
)
475 u_int cmd
= (0xf6<<10)|(phy_id
<<5)|loc
;
479 for (i
= 14; i
>= 0; i
--) {
480 int dat
= (cmd
&(1<<i
)) ? MDIO_DATA_WRITE1
: MDIO_DATA_WRITE0
;
482 outb_p(dat
| MDIO_SHIFT_CLK
, addr
);
484 for (i
= 19; i
> 0; i
--) {
485 outb_p(MDIO_ENB_IN
, addr
);
486 retval
= (retval
<< 1) | ((inb_p(addr
) & MDIO_DATA_READ
) != 0);
487 outb_p(MDIO_ENB_IN
| MDIO_SHIFT_CLK
, addr
);
489 return (retval
>>1) & 0xffff;
492 static void mdio_write(unsigned int addr
, int phy_id
, int loc
, int value
)
494 u_int cmd
= (0x05<<28)|(phy_id
<<23)|(loc
<<18)|(1<<17)|value
;
498 for (i
= 31; i
>= 0; i
--) {
499 int dat
= (cmd
&(1<<i
)) ? MDIO_DATA_WRITE1
: MDIO_DATA_WRITE0
;
501 outb_p(dat
| MDIO_SHIFT_CLK
, addr
);
503 for (i
= 1; i
>= 0; i
--) {
504 outb_p(MDIO_ENB_IN
, addr
);
505 outb_p(MDIO_ENB_IN
| MDIO_SHIFT_CLK
, addr
);
509 /*====================================================================*/
511 static int axnet_open(struct net_device
*dev
)
514 axnet_dev_t
*info
= PRIV(dev
);
515 struct pcmcia_device
*link
= info
->p_dev
;
516 unsigned int nic_base
= dev
->base_addr
;
518 dev_dbg(&link
->dev
, "axnet_open('%s')\n", dev
->name
);
520 if (!pcmcia_dev_present(link
))
523 outb_p(0xFF, nic_base
+ EN0_ISR
); /* Clear bogus intr. */
524 ret
= request_irq(dev
->irq
, ei_irq_wrapper
, IRQF_SHARED
, "axnet_cs", dev
);
530 info
->link_status
= 0x00;
531 init_timer(&info
->watchdog
);
532 info
->watchdog
.function
= &ei_watchdog
;
533 info
->watchdog
.data
= (u_long
)dev
;
534 info
->watchdog
.expires
= jiffies
+ HZ
;
535 add_timer(&info
->watchdog
);
540 /*====================================================================*/
542 static int axnet_close(struct net_device
*dev
)
544 axnet_dev_t
*info
= PRIV(dev
);
545 struct pcmcia_device
*link
= info
->p_dev
;
547 dev_dbg(&link
->dev
, "axnet_close('%s')\n", dev
->name
);
550 free_irq(dev
->irq
, dev
);
553 netif_stop_queue(dev
);
554 del_timer_sync(&info
->watchdog
);
559 /*======================================================================
561 Hard reset the card. This used to pause for the same period that
562 a 8390 reset command required, but that shouldn't be necessary.
564 ======================================================================*/
566 static void axnet_reset_8390(struct net_device
*dev
)
568 unsigned int nic_base
= dev
->base_addr
;
571 ei_status
.txing
= ei_status
.dmaing
= 0;
573 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, nic_base
+ E8390_CMD
);
575 outb(inb(nic_base
+ AXNET_RESET
), nic_base
+ AXNET_RESET
);
577 for (i
= 0; i
< 100; i
++) {
578 if ((inb_p(nic_base
+EN0_ISR
) & ENISR_RESET
) != 0)
582 outb_p(ENISR_RESET
, nic_base
+ EN0_ISR
); /* Ack intr. */
585 printk(KERN_ERR
"%s: axnet_reset_8390() did not complete.\n",
588 } /* axnet_reset_8390 */
590 /*====================================================================*/
592 static irqreturn_t
ei_irq_wrapper(int irq
, void *dev_id
)
594 struct net_device
*dev
= dev_id
;
595 PRIV(dev
)->stale
= 0;
596 return ax_interrupt(irq
, dev_id
);
599 static void ei_watchdog(u_long arg
)
601 struct net_device
*dev
= (struct net_device
*)(arg
);
602 axnet_dev_t
*info
= PRIV(dev
);
603 unsigned int nic_base
= dev
->base_addr
;
604 unsigned int mii_addr
= nic_base
+ AXNET_MII_EEP
;
607 if (!netif_device_present(dev
)) goto reschedule
;
609 /* Check for pending interrupt with expired latency timer: with
610 this, we can limp along even if the interrupt is blocked */
611 if (info
->stale
++ && (inb_p(nic_base
+ EN0_ISR
) & ENISR_ALL
)) {
612 if (!info
->fast_poll
)
613 printk(KERN_INFO
"%s: interrupt(s) dropped!\n", dev
->name
);
614 ei_irq_wrapper(dev
->irq
, dev
);
615 info
->fast_poll
= HZ
;
617 if (info
->fast_poll
) {
619 info
->watchdog
.expires
= jiffies
+ 1;
620 add_timer(&info
->watchdog
);
624 if (info
->phy_id
< 0)
626 link
= mdio_read(mii_addr
, info
->phy_id
, 1);
627 if (!link
|| (link
== 0xffff)) {
628 printk(KERN_INFO
"%s: MII is missing!\n", dev
->name
);
634 if (link
!= info
->link_status
) {
635 u_short p
= mdio_read(mii_addr
, info
->phy_id
, 5);
636 printk(KERN_INFO
"%s: %s link beat\n", dev
->name
,
637 (link
) ? "found" : "lost");
639 info
->duplex_flag
= (p
& 0x0140) ? 0x80 : 0x00;
641 printk(KERN_INFO
"%s: autonegotiation complete: "
642 "%sbaseT-%cD selected\n", dev
->name
,
643 ((p
& 0x0180) ? "100" : "10"),
644 ((p
& 0x0140) ? 'F' : 'H'));
646 printk(KERN_INFO
"%s: link partner did not autonegotiate\n",
648 AX88190_init(dev
, 1);
650 info
->link_status
= link
;
654 info
->watchdog
.expires
= jiffies
+ HZ
;
655 add_timer(&info
->watchdog
);
658 static void netdev_get_drvinfo(struct net_device
*dev
,
659 struct ethtool_drvinfo
*info
)
661 strcpy(info
->driver
, "axnet_cs");
664 static const struct ethtool_ops netdev_ethtool_ops
= {
665 .get_drvinfo
= netdev_get_drvinfo
,
668 /*====================================================================*/
670 static int axnet_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
672 axnet_dev_t
*info
= PRIV(dev
);
673 struct mii_ioctl_data
*data
= if_mii(rq
);
674 unsigned int mii_addr
= dev
->base_addr
+ AXNET_MII_EEP
;
677 data
->phy_id
= info
->phy_id
;
678 case SIOCGMIIREG
: /* Read MII PHY register. */
679 data
->val_out
= mdio_read(mii_addr
, data
->phy_id
, data
->reg_num
& 0x1f);
681 case SIOCSMIIREG
: /* Write MII PHY register. */
682 mdio_write(mii_addr
, data
->phy_id
, data
->reg_num
& 0x1f, data
->val_in
);
688 /*====================================================================*/
690 static void get_8390_hdr(struct net_device
*dev
,
691 struct e8390_pkt_hdr
*hdr
,
694 unsigned int nic_base
= dev
->base_addr
;
696 outb_p(0, nic_base
+ EN0_RSARLO
); /* On page boundary */
697 outb_p(ring_page
, nic_base
+ EN0_RSARHI
);
698 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ AXNET_CMD
);
700 insw(nic_base
+ AXNET_DATAPORT
, hdr
,
701 sizeof(struct e8390_pkt_hdr
)>>1);
702 /* Fix for big endian systems */
703 hdr
->count
= le16_to_cpu(hdr
->count
);
707 /*====================================================================*/
709 static void block_input(struct net_device
*dev
, int count
,
710 struct sk_buff
*skb
, int ring_offset
)
712 unsigned int nic_base
= dev
->base_addr
;
713 int xfer_count
= count
;
714 char *buf
= skb
->data
;
716 if ((ei_debug
> 4) && (count
!= 4))
717 pr_debug("%s: [bi=%d]\n", dev
->name
, count
+4);
718 outb_p(ring_offset
& 0xff, nic_base
+ EN0_RSARLO
);
719 outb_p(ring_offset
>> 8, nic_base
+ EN0_RSARHI
);
720 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ AXNET_CMD
);
722 insw(nic_base
+ AXNET_DATAPORT
,buf
,count
>>1);
724 buf
[count
-1] = inb(nic_base
+ AXNET_DATAPORT
), xfer_count
++;
728 /*====================================================================*/
730 static void block_output(struct net_device
*dev
, int count
,
731 const u_char
*buf
, const int start_page
)
733 unsigned int nic_base
= dev
->base_addr
;
735 pr_debug("%s: [bo=%d]\n", dev
->name
, count
);
737 /* Round the count up for word writes. Do we need to do this?
738 What effect will an odd byte count have on the 8390?
739 I should check someday. */
743 outb_p(0x00, nic_base
+ EN0_RSARLO
);
744 outb_p(start_page
, nic_base
+ EN0_RSARHI
);
745 outb_p(E8390_RWRITE
+E8390_START
, nic_base
+ AXNET_CMD
);
746 outsw(nic_base
+ AXNET_DATAPORT
, buf
, count
>>1);
749 static struct pcmcia_device_id axnet_ids
[] = {
750 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
751 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
752 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
753 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
754 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
755 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
756 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
757 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
758 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
759 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
760 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
761 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
762 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
763 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
764 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
765 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
766 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
767 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXM", 0x5261440f, 0x3abbd061),
768 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
769 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
770 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
771 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
772 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
773 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
774 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
775 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
776 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
779 MODULE_DEVICE_TABLE(pcmcia
, axnet_ids
);
781 static struct pcmcia_driver axnet_cs_driver
= {
782 .owner
= THIS_MODULE
,
786 .probe
= axnet_probe
,
787 .remove
= axnet_detach
,
788 .id_table
= axnet_ids
,
789 .suspend
= axnet_suspend
,
790 .resume
= axnet_resume
,
793 static int __init
init_axnet_cs(void)
795 return pcmcia_register_driver(&axnet_cs_driver
);
798 static void __exit
exit_axnet_cs(void)
800 pcmcia_unregister_driver(&axnet_cs_driver
);
803 module_init(init_axnet_cs
);
804 module_exit(exit_axnet_cs
);
806 /*====================================================================*/
808 /* 8390.c: A general NS8390 ethernet driver core for linux. */
810 Written 1992-94 by Donald Becker.
812 Copyright 1993 United States Government as represented by the
813 Director, National Security Agency.
815 This software may be used and distributed according to the terms
816 of the GNU General Public License, incorporated herein by reference.
818 The author may be reached as becker@scyld.com, or C/O
819 Scyld Computing Corporation
820 410 Severn Ave., Suite 210
823 This is the chip-specific code for many 8390-based ethernet adaptors.
824 This is not a complete driver, it must be combined with board-specific
825 code such as ne.c, wd.c, 3c503.c, etc.
827 Seeing how at least eight drivers use this code, (not counting the
828 PCMCIA ones either) it is easy to break some card by what seems like
829 a simple innocent change. Please contact me or Donald if you think
830 you have found something that needs changing. -- PG
834 Paul Gortmaker : remove set_bit lock, other cleanups.
835 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
836 ei_block_input() for eth_io_copy_and_sum().
837 Paul Gortmaker : exchange static int ei_pingpong for a #define,
838 also add better Tx error handling.
839 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
840 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
841 Paul Gortmaker : tweak ANK's above multicast changes a bit.
842 Paul Gortmaker : update packet statistics for v2.1.x
843 Alan Cox : support arbitary stupid port mappings on the
844 68K Macintosh. Support >16bit I/O spaces
845 Paul Gortmaker : add kmod support for auto-loading of the 8390
846 module by all drivers that require it.
847 Alan Cox : Spinlocking work, added 'BUG_83C690'
848 Paul Gortmaker : Separate out Tx timeout code from Tx path.
851 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
855 static const char version_8390
[] = KERN_INFO \
856 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
858 #include <linux/bitops.h>
860 #include <linux/fcntl.h>
861 #include <linux/in.h>
862 #include <linux/interrupt.h>
866 /* These are the operational function interfaces to board-specific
868 void reset_8390(struct net_device *dev)
869 Resets the board associated with DEV, including a hardware reset of
870 the 8390. This is only called when there is a transmit timeout, and
871 it is always followed by 8390_init().
872 void block_output(struct net_device *dev, int count, const unsigned char *buf,
874 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
875 "page" value uses the 8390's 256-byte pages.
876 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
877 Read the 4 byte, page aligned 8390 header. *If* there is a
878 subsequent read, it will be of the rest of the packet.
879 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
880 Read COUNT bytes from the packet buffer into the skb data area. Start
881 reading from RING_OFFSET, the address as the 8390 sees it. This will always
882 follow the read of the 8390 header.
884 #define ei_reset_8390 (ei_local->reset_8390)
885 #define ei_block_output (ei_local->block_output)
886 #define ei_block_input (ei_local->block_input)
887 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
889 /* use 0 for production, 1 for verification, >2 for debug */
894 /* Index to functions. */
895 static void ei_tx_intr(struct net_device
*dev
);
896 static void ei_tx_err(struct net_device
*dev
);
897 static void ei_receive(struct net_device
*dev
);
898 static void ei_rx_overrun(struct net_device
*dev
);
900 /* Routines generic to NS8390-based boards. */
901 static void NS8390_trigger_send(struct net_device
*dev
, unsigned int length
,
903 static void do_set_multicast_list(struct net_device
*dev
);
906 * SMP and the 8390 setup.
908 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
909 * a page register that controls bank and packet buffer access. We guard
910 * this with ei_local->page_lock. Nobody should assume or set the page other
911 * than zero when the lock is not held. Lock holders must restore page 0
912 * before unlocking. Even pure readers must take the lock to protect in
915 * To make life difficult the chip can also be very slow. We therefore can't
916 * just use spinlocks. For the longer lockups we disable the irq the device
917 * sits on and hold the lock. We must hold the lock because there is a dual
918 * processor case other than interrupts (get stats/set multicast list in
919 * parallel with each other and transmit).
921 * Note: in theory we can just disable the irq on the card _but_ there is
922 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
923 * enter lock, take the queued irq. So we waddle instead of flying.
925 * Finally by special arrangement for the purpose of being generally
926 * annoying the transmit function is called bh atomic. That places
927 * restrictions on the user context callers as disable_irq won't save
932 * ax_open - Open/initialize the board.
933 * @dev: network device to initialize
935 * This routine goes all-out, setting everything
936 * up anew at each open, even though many of these registers should only
937 * need to be set once at boot.
939 static int ax_open(struct net_device
*dev
)
942 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
945 * Grab the page lock so we own the register set, then call
949 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
950 AX88190_init(dev
, 1);
951 /* Set the flag before we drop the lock, That way the IRQ arrives
952 after its set and we get no silly warnings */
953 netif_start_queue(dev
);
954 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
955 ei_local
->irqlock
= 0;
959 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
962 * ax_close - shut down network device
963 * @dev: network device to close
965 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
967 static int ax_close(struct net_device
*dev
)
972 * Hold the page lock during close
975 spin_lock_irqsave(&dev_lock(dev
), flags
);
976 AX88190_init(dev
, 0);
977 spin_unlock_irqrestore(&dev_lock(dev
), flags
);
978 netif_stop_queue(dev
);
983 * axnet_tx_timeout - handle transmit time out condition
984 * @dev: network device which has apparently fallen asleep
986 * Called by kernel when device never acknowledges a transmit has
987 * completed (or failed) - i.e. never posted a Tx related interrupt.
990 static void axnet_tx_timeout(struct net_device
*dev
)
992 long e8390_base
= dev
->base_addr
;
993 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
994 int txsr
, isr
, tickssofar
= jiffies
- dev_trans_start(dev
);
997 dev
->stats
.tx_errors
++;
999 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
1000 txsr
= inb(e8390_base
+EN0_TSR
);
1001 isr
= inb(e8390_base
+EN0_ISR
);
1002 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1004 printk(KERN_DEBUG
"%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1005 dev
->name
, (txsr
& ENTSR_ABT
) ? "excess collisions." :
1006 (isr
) ? "lost interrupt?" : "cable problem?", txsr
, isr
, tickssofar
);
1008 if (!isr
&& !dev
->stats
.tx_packets
)
1010 /* The 8390 probably hasn't gotten on the cable yet. */
1011 ei_local
->interface_num
^= 1; /* Try a different xcvr. */
1014 /* Ugly but a reset can be slow, yet must be protected */
1016 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
1018 /* Try to restart the card. Perhaps the user has fixed something. */
1020 AX88190_init(dev
, 1);
1022 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1023 netif_wake_queue(dev
);
1027 * axnet_start_xmit - begin packet transmission
1028 * @skb: packet to be sent
1029 * @dev: network device to which packet is sent
1031 * Sends a packet to an 8390 network device.
1034 static netdev_tx_t
axnet_start_xmit(struct sk_buff
*skb
,
1035 struct net_device
*dev
)
1037 long e8390_base
= dev
->base_addr
;
1038 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1039 int length
, send_length
, output_page
;
1040 unsigned long flags
;
1041 u8 packet
[ETH_ZLEN
];
1043 netif_stop_queue(dev
);
1047 /* Mask interrupts from the ethercard.
1048 SMP: We have to grab the lock here otherwise the IRQ handler
1049 on another CPU can flip window and race the IRQ mask set. We end
1050 up trashing the mcast filter not disabling irqs if we don't lock */
1052 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
1053 outb_p(0x00, e8390_base
+ EN0_IMR
);
1056 * Slow phase with lock held.
1059 ei_local
->irqlock
= 1;
1061 send_length
= max(length
, ETH_ZLEN
);
1064 * We have two Tx slots available for use. Find the first free
1065 * slot, and then perform some sanity checks. With two Tx bufs,
1066 * you get very close to transmitting back-to-back packets. With
1067 * only one Tx buf, the transmitter sits idle while you reload the
1068 * card, leaving a substantial gap between each transmitted packet.
1071 if (ei_local
->tx1
== 0)
1073 output_page
= ei_local
->tx_start_page
;
1074 ei_local
->tx1
= send_length
;
1075 if (ei_debug
&& ei_local
->tx2
> 0)
1076 printk(KERN_DEBUG
"%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1077 dev
->name
, ei_local
->tx2
, ei_local
->lasttx
, ei_local
->txing
);
1079 else if (ei_local
->tx2
== 0)
1081 output_page
= ei_local
->tx_start_page
+ TX_PAGES
/2;
1082 ei_local
->tx2
= send_length
;
1083 if (ei_debug
&& ei_local
->tx1
> 0)
1084 printk(KERN_DEBUG
"%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1085 dev
->name
, ei_local
->tx1
, ei_local
->lasttx
, ei_local
->txing
);
1088 { /* We should never get here. */
1090 printk(KERN_DEBUG
"%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1091 dev
->name
, ei_local
->tx1
, ei_local
->tx2
, ei_local
->lasttx
);
1092 ei_local
->irqlock
= 0;
1093 netif_stop_queue(dev
);
1094 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1095 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1096 dev
->stats
.tx_errors
++;
1097 return NETDEV_TX_BUSY
;
1101 * Okay, now upload the packet and trigger a send if the transmitter
1102 * isn't already sending. If it is busy, the interrupt handler will
1103 * trigger the send later, upon receiving a Tx done interrupt.
1106 if (length
== skb
->len
)
1107 ei_block_output(dev
, length
, skb
->data
, output_page
);
1109 memset(packet
, 0, ETH_ZLEN
);
1110 skb_copy_from_linear_data(skb
, packet
, skb
->len
);
1111 ei_block_output(dev
, length
, packet
, output_page
);
1114 if (! ei_local
->txing
)
1116 ei_local
->txing
= 1;
1117 NS8390_trigger_send(dev
, send_length
, output_page
);
1118 dev
->trans_start
= jiffies
;
1119 if (output_page
== ei_local
->tx_start_page
)
1122 ei_local
->lasttx
= -1;
1127 ei_local
->lasttx
= -2;
1130 else ei_local
->txqueue
++;
1132 if (ei_local
->tx1
&& ei_local
->tx2
)
1133 netif_stop_queue(dev
);
1135 netif_start_queue(dev
);
1137 /* Turn 8390 interrupts back on. */
1138 ei_local
->irqlock
= 0;
1139 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1141 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1143 dev_kfree_skb (skb
);
1144 dev
->stats
.tx_bytes
+= send_length
;
1146 return NETDEV_TX_OK
;
1150 * ax_interrupt - handle the interrupts from an 8390
1151 * @irq: interrupt number
1152 * @dev_id: a pointer to the net_device
1154 * Handle the ether interface interrupts. We pull packets from
1155 * the 8390 via the card specific functions and fire them at the networking
1156 * stack. We also handle transmit completions and wake the transmit path if
1157 * necessary. We also update the counters and do other housekeeping as
1161 static irqreturn_t
ax_interrupt(int irq
, void *dev_id
)
1163 struct net_device
*dev
= dev_id
;
1165 int interrupts
, nr_serviced
= 0, i
;
1166 struct ei_device
*ei_local
;
1168 unsigned long flags
;
1170 e8390_base
= dev
->base_addr
;
1171 ei_local
= netdev_priv(dev
);
1174 * Protect the irq test too.
1177 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
1179 if (ei_local
->irqlock
)
1181 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1182 /* The "irqlock" check is only for testing. */
1183 printk(ei_local
->irqlock
1184 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1185 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1186 dev
->name
, inb_p(e8390_base
+ EN0_ISR
),
1187 inb_p(e8390_base
+ EN0_IMR
));
1189 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1194 printk(KERN_DEBUG
"%s: interrupt(isr=%#2.2x).\n", dev
->name
,
1195 inb_p(e8390_base
+ EN0_ISR
));
1197 outb_p(0x00, e8390_base
+ EN0_ISR
);
1198 ei_local
->irqlock
= 1;
1200 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1201 while ((interrupts
= inb_p(e8390_base
+ EN0_ISR
)) != 0 &&
1202 ++nr_serviced
< MAX_SERVICE
)
1204 if (!netif_running(dev
) || (interrupts
== 0xff)) {
1206 printk(KERN_WARNING
"%s: interrupt from stopped card\n", dev
->name
);
1207 outb_p(interrupts
, e8390_base
+ EN0_ISR
);
1213 /* AX88190 bug fix. */
1214 outb_p(interrupts
, e8390_base
+ EN0_ISR
);
1215 for (i
= 0; i
< 10; i
++) {
1216 if (!(inb(e8390_base
+ EN0_ISR
) & interrupts
))
1218 outb_p(0, e8390_base
+ EN0_ISR
);
1219 outb_p(interrupts
, e8390_base
+ EN0_ISR
);
1221 if (interrupts
& ENISR_OVER
)
1223 else if (interrupts
& (ENISR_RX
+ENISR_RX_ERR
))
1225 /* Got a good (?) packet. */
1228 /* Push the next to-transmit packet through. */
1229 if (interrupts
& ENISR_TX
)
1231 else if (interrupts
& ENISR_TX_ERR
)
1234 if (interrupts
& ENISR_COUNTERS
)
1236 dev
->stats
.rx_frame_errors
+= inb_p(e8390_base
+ EN0_COUNTER0
);
1237 dev
->stats
.rx_crc_errors
+= inb_p(e8390_base
+ EN0_COUNTER1
);
1238 dev
->stats
.rx_missed_errors
+= inb_p(e8390_base
+ EN0_COUNTER2
);
1242 if (interrupts
&& ei_debug
> 3)
1245 if (nr_serviced
>= MAX_SERVICE
)
1247 /* 0xFF is valid for a card removal */
1248 if(interrupts
!=0xFF)
1249 printk(KERN_WARNING
"%s: Too much work at interrupt, status %#2.2x\n",
1250 dev
->name
, interrupts
);
1251 outb_p(ENISR_ALL
, e8390_base
+ EN0_ISR
); /* Ack. most intrs. */
1253 printk(KERN_WARNING
"%s: unknown interrupt %#2x\n", dev
->name
, interrupts
);
1254 outb_p(0xff, e8390_base
+ EN0_ISR
); /* Ack. all intrs. */
1258 /* Turn 8390 interrupts back on. */
1259 ei_local
->irqlock
= 0;
1260 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1262 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1263 return IRQ_RETVAL(handled
);
1267 * ei_tx_err - handle transmitter error
1268 * @dev: network device which threw the exception
1270 * A transmitter error has happened. Most likely excess collisions (which
1271 * is a fairly normal condition). If the error is one where the Tx will
1272 * have been aborted, we try and send another one right away, instead of
1273 * letting the failed packet sit and collect dust in the Tx buffer. This
1274 * is a much better solution as it avoids kernel based Tx timeouts, and
1275 * an unnecessary card reset.
1277 * Called with lock held.
1280 static void ei_tx_err(struct net_device
*dev
)
1282 long e8390_base
= dev
->base_addr
;
1283 unsigned char txsr
= inb_p(e8390_base
+EN0_TSR
);
1284 unsigned char tx_was_aborted
= txsr
& (ENTSR_ABT
+ENTSR_FU
);
1286 #ifdef VERBOSE_ERROR_DUMP
1287 printk(KERN_DEBUG
"%s: transmitter error (%#2x): ", dev
->name
, txsr
);
1288 if (txsr
& ENTSR_ABT
)
1289 printk("excess-collisions ");
1290 if (txsr
& ENTSR_ND
)
1291 printk("non-deferral ");
1292 if (txsr
& ENTSR_CRS
)
1293 printk("lost-carrier ");
1294 if (txsr
& ENTSR_FU
)
1295 printk("FIFO-underrun ");
1296 if (txsr
& ENTSR_CDH
)
1297 printk("lost-heartbeat ");
1305 dev
->stats
.tx_errors
++;
1306 if (txsr
& ENTSR_CRS
) dev
->stats
.tx_carrier_errors
++;
1307 if (txsr
& ENTSR_CDH
) dev
->stats
.tx_heartbeat_errors
++;
1308 if (txsr
& ENTSR_OWC
) dev
->stats
.tx_window_errors
++;
1313 * ei_tx_intr - transmit interrupt handler
1314 * @dev: network device for which tx intr is handled
1316 * We have finished a transmit: check for errors and then trigger the next
1317 * packet to be sent. Called with lock held.
1320 static void ei_tx_intr(struct net_device
*dev
)
1322 long e8390_base
= dev
->base_addr
;
1323 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1324 int status
= inb(e8390_base
+ EN0_TSR
);
1327 * There are two Tx buffers, see which one finished, and trigger
1328 * the send of another one if it exists.
1330 ei_local
->txqueue
--;
1332 if (ei_local
->tx1
< 0)
1334 if (ei_local
->lasttx
!= 1 && ei_local
->lasttx
!= -1)
1335 printk(KERN_ERR
"%s: bogus last_tx_buffer %d, tx1=%d.\n",
1336 ei_local
->name
, ei_local
->lasttx
, ei_local
->tx1
);
1338 if (ei_local
->tx2
> 0)
1340 ei_local
->txing
= 1;
1341 NS8390_trigger_send(dev
, ei_local
->tx2
, ei_local
->tx_start_page
+ 6);
1342 dev
->trans_start
= jiffies
;
1344 ei_local
->lasttx
= 2;
1346 else ei_local
->lasttx
= 20, ei_local
->txing
= 0;
1348 else if (ei_local
->tx2
< 0)
1350 if (ei_local
->lasttx
!= 2 && ei_local
->lasttx
!= -2)
1351 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1352 ei_local
->name
, ei_local
->lasttx
, ei_local
->tx2
);
1354 if (ei_local
->tx1
> 0)
1356 ei_local
->txing
= 1;
1357 NS8390_trigger_send(dev
, ei_local
->tx1
, ei_local
->tx_start_page
);
1358 dev
->trans_start
= jiffies
;
1360 ei_local
->lasttx
= 1;
1363 ei_local
->lasttx
= 10, ei_local
->txing
= 0;
1365 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1366 // dev->name, ei_local->lasttx);
1368 /* Minimize Tx latency: update the statistics after we restart TXing. */
1369 if (status
& ENTSR_COL
)
1370 dev
->stats
.collisions
++;
1371 if (status
& ENTSR_PTX
)
1372 dev
->stats
.tx_packets
++;
1375 dev
->stats
.tx_errors
++;
1376 if (status
& ENTSR_ABT
)
1378 dev
->stats
.tx_aborted_errors
++;
1379 dev
->stats
.collisions
+= 16;
1381 if (status
& ENTSR_CRS
)
1382 dev
->stats
.tx_carrier_errors
++;
1383 if (status
& ENTSR_FU
)
1384 dev
->stats
.tx_fifo_errors
++;
1385 if (status
& ENTSR_CDH
)
1386 dev
->stats
.tx_heartbeat_errors
++;
1387 if (status
& ENTSR_OWC
)
1388 dev
->stats
.tx_window_errors
++;
1390 netif_wake_queue(dev
);
1394 * ei_receive - receive some packets
1395 * @dev: network device with which receive will be run
1397 * We have a good packet(s), get it/them out of the buffers.
1398 * Called with lock held.
1401 static void ei_receive(struct net_device
*dev
)
1403 long e8390_base
= dev
->base_addr
;
1404 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1405 unsigned char rxing_page
, this_frame
, next_frame
;
1406 unsigned short current_offset
;
1407 int rx_pkt_count
= 0;
1408 struct e8390_pkt_hdr rx_frame
;
1410 while (++rx_pkt_count
< 10)
1412 int pkt_len
, pkt_stat
;
1414 /* Get the rx page (incoming packet pointer). */
1415 rxing_page
= inb_p(e8390_base
+ EN1_CURPAG
-1);
1417 /* Remove one frame from the ring. Boundary is always a page behind. */
1418 this_frame
= inb_p(e8390_base
+ EN0_BOUNDARY
) + 1;
1419 if (this_frame
>= ei_local
->stop_page
)
1420 this_frame
= ei_local
->rx_start_page
;
1422 /* Someday we'll omit the previous, iff we never get this message.
1423 (There is at least one clone claimed to have a problem.)
1425 Keep quiet if it looks like a card removal. One problem here
1426 is that some clones crash in roughly the same way.
1428 if (ei_debug
> 0 && this_frame
!= ei_local
->current_page
&& (this_frame
!=0x0 || rxing_page
!=0xFF))
1429 printk(KERN_ERR
"%s: mismatched read page pointers %2x vs %2x.\n",
1430 dev
->name
, this_frame
, ei_local
->current_page
);
1432 if (this_frame
== rxing_page
) /* Read all the frames? */
1433 break; /* Done for now */
1435 current_offset
= this_frame
<< 8;
1436 ei_get_8390_hdr(dev
, &rx_frame
, this_frame
);
1438 pkt_len
= rx_frame
.count
- sizeof(struct e8390_pkt_hdr
);
1439 pkt_stat
= rx_frame
.status
;
1441 next_frame
= this_frame
+ 1 + ((pkt_len
+4)>>8);
1443 if (pkt_len
< 60 || pkt_len
> 1518)
1446 printk(KERN_DEBUG
"%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1447 dev
->name
, rx_frame
.count
, rx_frame
.status
,
1449 dev
->stats
.rx_errors
++;
1450 dev
->stats
.rx_length_errors
++;
1452 else if ((pkt_stat
& 0x0F) == ENRSR_RXOK
)
1454 struct sk_buff
*skb
;
1456 skb
= dev_alloc_skb(pkt_len
+2);
1460 printk(KERN_DEBUG
"%s: Couldn't allocate a sk_buff of size %d.\n",
1461 dev
->name
, pkt_len
);
1462 dev
->stats
.rx_dropped
++;
1467 skb_reserve(skb
,2); /* IP headers on 16 byte boundaries */
1468 skb_put(skb
, pkt_len
); /* Make room */
1469 ei_block_input(dev
, pkt_len
, skb
, current_offset
+ sizeof(rx_frame
));
1470 skb
->protocol
=eth_type_trans(skb
,dev
);
1472 dev
->stats
.rx_packets
++;
1473 dev
->stats
.rx_bytes
+= pkt_len
;
1474 if (pkt_stat
& ENRSR_PHY
)
1475 dev
->stats
.multicast
++;
1481 printk(KERN_DEBUG
"%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1482 dev
->name
, rx_frame
.status
, rx_frame
.next
,
1484 dev
->stats
.rx_errors
++;
1485 /* NB: The NIC counts CRC, frame and missed errors. */
1486 if (pkt_stat
& ENRSR_FO
)
1487 dev
->stats
.rx_fifo_errors
++;
1489 next_frame
= rx_frame
.next
;
1491 /* This _should_ never happen: it's here for avoiding bad clones. */
1492 if (next_frame
>= ei_local
->stop_page
) {
1493 printk("%s: next frame inconsistency, %#2x\n", dev
->name
,
1495 next_frame
= ei_local
->rx_start_page
;
1497 ei_local
->current_page
= next_frame
;
1498 outb_p(next_frame
-1, e8390_base
+EN0_BOUNDARY
);
1503 * ei_rx_overrun - handle receiver overrun
1504 * @dev: network device which threw exception
1506 * We have a receiver overrun: we have to kick the 8390 to get it started
1507 * again. Problem is that you have to kick it exactly as NS prescribes in
1508 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1509 * This includes causing "the NIC to defer indefinitely when it is stopped
1510 * on a busy network." Ugh.
1511 * Called with lock held. Don't call this with the interrupts off or your
1512 * computer will hate you - it takes 10ms or so.
1515 static void ei_rx_overrun(struct net_device
*dev
)
1517 axnet_dev_t
*info
= PRIV(dev
);
1518 long e8390_base
= dev
->base_addr
;
1519 unsigned char was_txing
, must_resend
= 0;
1522 * Record whether a Tx was in progress and then issue the
1525 was_txing
= inb_p(e8390_base
+E8390_CMD
) & E8390_TRANS
;
1526 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, e8390_base
+E8390_CMD
);
1529 printk(KERN_DEBUG
"%s: Receiver overrun.\n", dev
->name
);
1530 dev
->stats
.rx_over_errors
++;
1533 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1534 * Early datasheets said to poll the reset bit, but now they say that
1535 * it "is not a reliable indicator and subsequently should be ignored."
1536 * We wait at least 10ms.
1542 * Reset RBCR[01] back to zero as per magic incantation.
1544 outb_p(0x00, e8390_base
+EN0_RCNTLO
);
1545 outb_p(0x00, e8390_base
+EN0_RCNTHI
);
1548 * See if any Tx was interrupted or not. According to NS, this
1549 * step is vital, and skipping it will cause no end of havoc.
1554 unsigned char tx_completed
= inb_p(e8390_base
+EN0_ISR
) & (ENISR_TX
+ENISR_TX_ERR
);
1560 * Have to enter loopback mode and then restart the NIC before
1561 * you are allowed to slurp packets up off the ring.
1563 outb_p(E8390_TXOFF
, e8390_base
+ EN0_TXCR
);
1564 outb_p(E8390_NODMA
+ E8390_PAGE0
+ E8390_START
, e8390_base
+ E8390_CMD
);
1567 * Clear the Rx ring of all the debris, and ack the interrupt.
1572 * Leave loopback mode, and resend any packet that got stopped.
1574 outb_p(E8390_TXCONFIG
| info
->duplex_flag
, e8390_base
+ EN0_TXCR
);
1576 outb_p(E8390_NODMA
+ E8390_PAGE0
+ E8390_START
+ E8390_TRANS
, e8390_base
+ E8390_CMD
);
1580 * Collect the stats. This is called unlocked and from several contexts.
1583 static struct net_device_stats
*get_stats(struct net_device
*dev
)
1585 long ioaddr
= dev
->base_addr
;
1586 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1587 unsigned long flags
;
1589 /* If the card is stopped, just return the present stats. */
1590 if (!netif_running(dev
))
1593 spin_lock_irqsave(&ei_local
->page_lock
,flags
);
1594 /* Read the counter registers, assuming we are in page 0. */
1595 dev
->stats
.rx_frame_errors
+= inb_p(ioaddr
+ EN0_COUNTER0
);
1596 dev
->stats
.rx_crc_errors
+= inb_p(ioaddr
+ EN0_COUNTER1
);
1597 dev
->stats
.rx_missed_errors
+= inb_p(ioaddr
+ EN0_COUNTER2
);
1598 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1604 * Form the 64 bit 8390 multicast table from the linked list of addresses
1605 * associated with this dev structure.
1608 static inline void make_mc_bits(u8
*bits
, struct net_device
*dev
)
1610 struct netdev_hw_addr
*ha
;
1613 netdev_for_each_mc_addr(ha
, dev
) {
1614 crc
= ether_crc(ETH_ALEN
, ha
->addr
);
1616 * The 8390 uses the 6 most significant bits of the
1617 * CRC to index the multicast table.
1619 bits
[crc
>>29] |= (1<<((crc
>>26)&7));
1624 * do_set_multicast_list - set/clear multicast filter
1625 * @dev: net device for which multicast filter is adjusted
1627 * Set or clear the multicast filter for this adaptor.
1628 * Must be called with lock held.
1631 static void do_set_multicast_list(struct net_device
*dev
)
1633 long e8390_base
= dev
->base_addr
;
1635 struct ei_device
*ei_local
= (struct ei_device
*)netdev_priv(dev
);
1637 if (!(dev
->flags
&(IFF_PROMISC
|IFF_ALLMULTI
))) {
1638 memset(ei_local
->mcfilter
, 0, 8);
1639 if (!netdev_mc_empty(dev
))
1640 make_mc_bits(ei_local
->mcfilter
, dev
);
1642 /* set to accept-all */
1643 memset(ei_local
->mcfilter
, 0xFF, 8);
1646 outb_p(E8390_NODMA
+ E8390_PAGE1
, e8390_base
+ E8390_CMD
);
1647 for(i
= 0; i
< 8; i
++)
1649 outb_p(ei_local
->mcfilter
[i
], e8390_base
+ EN1_MULT_SHIFT(i
));
1651 outb_p(E8390_NODMA
+ E8390_PAGE0
, e8390_base
+ E8390_CMD
);
1653 if(dev
->flags
&IFF_PROMISC
)
1654 outb_p(E8390_RXCONFIG
| 0x58, e8390_base
+ EN0_RXCR
);
1655 else if (dev
->flags
& IFF_ALLMULTI
|| !netdev_mc_empty(dev
))
1656 outb_p(E8390_RXCONFIG
| 0x48, e8390_base
+ EN0_RXCR
);
1658 outb_p(E8390_RXCONFIG
| 0x40, e8390_base
+ EN0_RXCR
);
1660 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, e8390_base
+E8390_CMD
);
1664 * Called without lock held. This is invoked from user context and may
1665 * be parallel to just about everything else. Its also fairly quick and
1666 * not called too often. Must protect against both bh and irq users
1669 static void set_multicast_list(struct net_device
*dev
)
1671 unsigned long flags
;
1673 spin_lock_irqsave(&dev_lock(dev
), flags
);
1674 do_set_multicast_list(dev
);
1675 spin_unlock_irqrestore(&dev_lock(dev
), flags
);
1678 /* This page of functions should be 8390 generic */
1679 /* Follow National Semi's recommendations for initializing the "NIC". */
1682 * AX88190_init - initialize 8390 hardware
1683 * @dev: network device to initialize
1684 * @startp: boolean. non-zero value to initiate chip processing
1686 * Must be called with lock held.
1689 static void AX88190_init(struct net_device
*dev
, int startp
)
1691 axnet_dev_t
*info
= PRIV(dev
);
1692 long e8390_base
= dev
->base_addr
;
1693 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1695 int endcfg
= ei_local
->word16
? (0x48 | ENDCFG_WTS
) : 0x48;
1697 if(sizeof(struct e8390_pkt_hdr
)!=4)
1698 panic("8390.c: header struct mispacked\n");
1699 /* Follow National Semi's recommendations for initing the DP83902. */
1700 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, e8390_base
+E8390_CMD
); /* 0x21 */
1701 outb_p(endcfg
, e8390_base
+ EN0_DCFG
); /* 0x48 or 0x49 */
1702 /* Clear the remote byte count registers. */
1703 outb_p(0x00, e8390_base
+ EN0_RCNTLO
);
1704 outb_p(0x00, e8390_base
+ EN0_RCNTHI
);
1705 /* Set to monitor and loopback mode -- this is vital!. */
1706 outb_p(E8390_RXOFF
|0x40, e8390_base
+ EN0_RXCR
); /* 0x60 */
1707 outb_p(E8390_TXOFF
, e8390_base
+ EN0_TXCR
); /* 0x02 */
1708 /* Set the transmit page and receive ring. */
1709 outb_p(ei_local
->tx_start_page
, e8390_base
+ EN0_TPSR
);
1710 ei_local
->tx1
= ei_local
->tx2
= 0;
1711 outb_p(ei_local
->rx_start_page
, e8390_base
+ EN0_STARTPG
);
1712 outb_p(ei_local
->stop_page
-1, e8390_base
+ EN0_BOUNDARY
); /* 3c503 says 0x3f,NS0x26*/
1713 ei_local
->current_page
= ei_local
->rx_start_page
; /* assert boundary+1 */
1714 outb_p(ei_local
->stop_page
, e8390_base
+ EN0_STOPPG
);
1715 /* Clear the pending interrupts and mask. */
1716 outb_p(0xFF, e8390_base
+ EN0_ISR
);
1717 outb_p(0x00, e8390_base
+ EN0_IMR
);
1719 /* Copy the station address into the DS8390 registers. */
1721 outb_p(E8390_NODMA
+ E8390_PAGE1
+ E8390_STOP
, e8390_base
+E8390_CMD
); /* 0x61 */
1722 for(i
= 0; i
< 6; i
++)
1724 outb_p(dev
->dev_addr
[i
], e8390_base
+ EN1_PHYS_SHIFT(i
));
1725 if(inb_p(e8390_base
+ EN1_PHYS_SHIFT(i
))!=dev
->dev_addr
[i
])
1726 printk(KERN_ERR
"Hw. address read/write mismap %d\n",i
);
1729 outb_p(ei_local
->rx_start_page
, e8390_base
+ EN1_CURPAG
);
1730 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, e8390_base
+E8390_CMD
);
1732 netif_start_queue(dev
);
1733 ei_local
->tx1
= ei_local
->tx2
= 0;
1734 ei_local
->txing
= 0;
1736 if (info
->flags
& IS_AX88790
) /* select Internal PHY */
1737 outb(0x10, e8390_base
+ AXNET_GPIO
);
1741 outb_p(0xff, e8390_base
+ EN0_ISR
);
1742 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1743 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, e8390_base
+E8390_CMD
);
1744 outb_p(E8390_TXCONFIG
| info
->duplex_flag
,
1745 e8390_base
+ EN0_TXCR
); /* xmit on. */
1746 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1747 outb_p(E8390_RXCONFIG
| 0x40, e8390_base
+ EN0_RXCR
); /* rx on, */
1748 do_set_multicast_list(dev
); /* (re)load the mcast table */
1752 /* Trigger a transmit start, assuming the length is valid.
1753 Always called with the page lock held */
1755 static void NS8390_trigger_send(struct net_device
*dev
, unsigned int length
,
1758 long e8390_base
= dev
->base_addr
;
1759 struct ei_device
*ei_local
__attribute((unused
)) = (struct ei_device
*) netdev_priv(dev
);
1761 if (inb_p(e8390_base
) & E8390_TRANS
)
1763 printk(KERN_WARNING
"%s: trigger_send() called with the transmitter busy.\n",
1767 outb_p(length
& 0xff, e8390_base
+ EN0_TCNTLO
);
1768 outb_p(length
>> 8, e8390_base
+ EN0_TCNTHI
);
1769 outb_p(start_page
, e8390_base
+ EN0_TPSR
);
1770 outb_p(E8390_NODMA
+E8390_TRANS
+E8390_START
, e8390_base
+E8390_CMD
);