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/cs.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 const struct ethtool_ops netdev_ethtool_ops
;
90 static irqreturn_t
ei_irq_wrapper(int irq
, void *dev_id
);
91 static void ei_watchdog(u_long arg
);
92 static void axnet_reset_8390(struct net_device
*dev
);
94 static int mdio_read(unsigned int addr
, int phy_id
, int loc
);
95 static void mdio_write(unsigned int addr
, int phy_id
, int loc
, int value
);
97 static void get_8390_hdr(struct net_device
*,
98 struct e8390_pkt_hdr
*, int);
99 static void block_input(struct net_device
*dev
, int count
,
100 struct sk_buff
*skb
, int ring_offset
);
101 static void block_output(struct net_device
*dev
, int count
,
102 const u_char
*buf
, const int start_page
);
104 static void axnet_detach(struct pcmcia_device
*p_dev
);
106 static void AX88190_init(struct net_device
*dev
, int startp
);
107 static int ax_open(struct net_device
*dev
);
108 static int ax_close(struct net_device
*dev
);
109 static irqreturn_t
ax_interrupt(int irq
, void *dev_id
);
111 /*====================================================================*/
113 typedef struct axnet_dev_t
{
114 struct pcmcia_device
*p_dev
;
116 struct timer_list watchdog
;
117 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 /*======================================================================
145 axnet_attach() creates an "instance" of the driver, allocating
146 local data structures for one device. The device is registered
149 ======================================================================*/
151 static int axnet_probe(struct pcmcia_device
*link
)
154 struct net_device
*dev
;
155 struct ei_device
*ei_local
;
157 dev_dbg(&link
->dev
, "axnet_attach()\n");
159 dev
= alloc_etherdev(sizeof(struct ei_device
) + sizeof(axnet_dev_t
));
163 ei_local
= netdev_priv(dev
);
164 spin_lock_init(&ei_local
->page_lock
);
169 link
->conf
.Attributes
= CONF_ENABLE_IRQ
;
170 link
->conf
.IntType
= INT_MEMORY_AND_IO
;
172 dev
->netdev_ops
= &axnet_netdev_ops
;
174 SET_ETHTOOL_OPS(dev
, &netdev_ethtool_ops
);
175 dev
->watchdog_timeo
= TX_TIMEOUT
;
177 return axnet_config(link
);
180 /*======================================================================
182 This deletes a driver "instance". The device is de-registered
183 with Card Services. If it has been released, all local data
184 structures are freed. Otherwise, the structures will be freed
185 when the device is released.
187 ======================================================================*/
189 static void axnet_detach(struct pcmcia_device
*link
)
191 struct net_device
*dev
= link
->priv
;
193 dev_dbg(&link
->dev
, "axnet_detach(0x%p)\n", link
);
195 unregister_netdev(dev
);
202 /*======================================================================
204 This probes for a card's hardware address by reading the PROM.
206 ======================================================================*/
208 static int get_prom(struct pcmcia_device
*link
)
210 struct net_device
*dev
= link
->priv
;
211 unsigned int ioaddr
= dev
->base_addr
;
214 /* This is based on drivers/net/ne.c */
216 u_char value
, offset
;
218 {E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, E8390_CMD
}, /* Select page 0*/
219 {0x01, EN0_DCFG
}, /* Set word-wide access. */
220 {0x00, EN0_RCNTLO
}, /* Clear the count regs. */
222 {0x00, EN0_IMR
}, /* Mask completion irq. */
224 {E8390_RXOFF
|0x40, EN0_RXCR
}, /* 0x60 Set to monitor */
225 {E8390_TXOFF
, EN0_TXCR
}, /* 0x02 and loopback mode. */
228 {0x00, EN0_RSARLO
}, /* DMA starting at 0x0400. */
230 {E8390_RREAD
+E8390_START
, E8390_CMD
},
233 /* Not much of a test, but the alternatives are messy */
234 if (link
->conf
.ConfigBase
!= 0x03c0)
237 axnet_reset_8390(dev
);
240 for (i
= 0; i
< ARRAY_SIZE(program_seq
); i
++)
241 outb_p(program_seq
[i
].value
, ioaddr
+ program_seq
[i
].offset
);
243 for (i
= 0; i
< 6; i
+= 2) {
244 j
= inw(ioaddr
+ AXNET_DATAPORT
);
245 dev
->dev_addr
[i
] = j
& 0xff;
246 dev
->dev_addr
[i
+1] = j
>> 8;
251 /*======================================================================
253 axnet_config() is scheduled to run after a CARD_INSERTION event
254 is received, to configure the PCMCIA socket, and to make the
255 ethernet device available to the system.
257 ======================================================================*/
259 static int try_io_port(struct pcmcia_device
*link
)
262 link
->resource
[0]->flags
&= ~IO_DATA_PATH_WIDTH
;
263 link
->resource
[1]->flags
&= ~IO_DATA_PATH_WIDTH
;
264 if (link
->resource
[0]->end
== 32) {
265 link
->resource
[0]->flags
|= IO_DATA_PATH_WIDTH_AUTO
;
266 /* for master/slave multifunction cards */
267 if (link
->resource
[1]->end
> 0)
268 link
->resource
[1]->flags
|= IO_DATA_PATH_WIDTH_8
;
270 /* This should be two 16-port windows */
271 link
->resource
[0]->flags
|= IO_DATA_PATH_WIDTH_8
;
272 link
->resource
[1]->flags
|= IO_DATA_PATH_WIDTH_16
;
274 if (link
->resource
[0]->start
== 0) {
275 for (j
= 0; j
< 0x400; j
+= 0x20) {
276 link
->resource
[0]->start
= j
^ 0x300;
277 link
->resource
[1]->start
= (j
^ 0x300) + 0x10;
279 ret
= pcmcia_request_io(link
);
285 return pcmcia_request_io(link
);
289 static int axnet_configcheck(struct pcmcia_device
*p_dev
,
290 cistpl_cftable_entry_t
*cfg
,
291 cistpl_cftable_entry_t
*dflt
,
296 cistpl_io_t
*io
= &cfg
->io
;
298 if (cfg
->index
== 0 || cfg
->io
.nwin
== 0)
301 p_dev
->conf
.ConfigIndex
= 0x05;
302 /* For multifunction cards, by convention, we configure the
303 network function with window 0, and serial with window 1 */
305 i
= (io
->win
[1].len
> io
->win
[0].len
);
306 p_dev
->resource
[1]->start
= io
->win
[1-i
].base
;
307 p_dev
->resource
[1]->end
= io
->win
[1-i
].len
;
309 i
= p_dev
->resource
[1]->end
= 0;
311 p_dev
->resource
[0]->start
= io
->win
[i
].base
;
312 p_dev
->resource
[0]->end
= io
->win
[i
].len
;
313 p_dev
->io_lines
= io
->flags
& CISTPL_IO_LINES_MASK
;
314 if (p_dev
->resource
[0]->end
+ p_dev
->resource
[1]->end
>= 32)
315 return try_io_port(p_dev
);
320 static int axnet_config(struct pcmcia_device
*link
)
322 struct net_device
*dev
= link
->priv
;
323 axnet_dev_t
*info
= PRIV(dev
);
326 dev_dbg(&link
->dev
, "axnet_config(0x%p)\n", link
);
328 /* don't trust the CIS on this; Linksys got it wrong */
329 link
->conf
.Present
= 0x63;
330 ret
= pcmcia_loop_config(link
, axnet_configcheck
, NULL
);
337 if (resource_size(link
->resource
[1]) == 8) {
338 link
->conf
.Attributes
|= CONF_ENABLE_SPKR
;
339 link
->conf
.Status
= CCSR_AUDIO_ENA
;
342 ret
= pcmcia_request_configuration(link
, &link
->conf
);
346 dev
->irq
= link
->irq
;
347 dev
->base_addr
= link
->resource
[0]->start
;
349 if (!get_prom(link
)) {
350 printk(KERN_NOTICE
"axnet_cs: this is not an AX88190 card!\n");
351 printk(KERN_NOTICE
"axnet_cs: use pcnet_cs instead.\n");
355 ei_status
.name
= "AX88190";
356 ei_status
.word16
= 1;
357 ei_status
.tx_start_page
= AXNET_START_PG
;
358 ei_status
.rx_start_page
= AXNET_START_PG
+ TX_PAGES
;
359 ei_status
.stop_page
= AXNET_STOP_PG
;
360 ei_status
.reset_8390
= &axnet_reset_8390
;
361 ei_status
.get_8390_hdr
= &get_8390_hdr
;
362 ei_status
.block_input
= &block_input
;
363 ei_status
.block_output
= &block_output
;
365 if (inb(dev
->base_addr
+ AXNET_TEST
) != 0)
366 info
->flags
|= IS_AX88790
;
368 info
->flags
|= IS_AX88190
;
370 if (info
->flags
& IS_AX88790
)
371 outb(0x10, dev
->base_addr
+ AXNET_GPIO
); /* select Internal PHY */
373 for (i
= 0; i
< 32; i
++) {
374 j
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 1);
375 j2
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 2);
376 if (j
== j2
) continue;
377 if ((j
!= 0) && (j
!= 0xffff)) break;
380 /* Maybe PHY is in power down mode. (PPD_SET = 1)
381 Bit 2 of CCSR is active low. */
383 pcmcia_write_config_byte(link
, CISREG_CCSR
, 0x04);
384 for (i
= 0; i
< 32; i
++) {
385 j
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 1);
386 j2
= mdio_read(dev
->base_addr
+ AXNET_MII_EEP
, i
, 2);
387 if (j
== j2
) continue;
388 if ((j
!= 0) && (j
!= 0xffff)) break;
392 info
->phy_id
= (i
< 32) ? i
: -1;
393 SET_NETDEV_DEV(dev
, &link
->dev
);
395 if (register_netdev(dev
) != 0) {
396 printk(KERN_NOTICE
"axnet_cs: register_netdev() failed\n");
400 printk(KERN_INFO
"%s: Asix AX88%d90: io %#3lx, irq %d, "
402 dev
->name
, ((info
->flags
& IS_AX88790
) ? 7 : 1),
403 dev
->base_addr
, dev
->irq
,
405 if (info
->phy_id
!= -1) {
406 dev_dbg(&link
->dev
, " MII transceiver at index %d, status %x.\n", info
->phy_id
, j
);
408 printk(KERN_NOTICE
" No MII transceivers found!\n");
417 /*======================================================================
419 After a card is removed, axnet_release() will unregister the net
420 device, and release the PCMCIA configuration. If the device is
421 still open, this will be postponed until it is closed.
423 ======================================================================*/
425 static void axnet_release(struct pcmcia_device
*link
)
427 pcmcia_disable_device(link
);
430 static int axnet_suspend(struct pcmcia_device
*link
)
432 struct net_device
*dev
= link
->priv
;
435 netif_device_detach(dev
);
440 static int axnet_resume(struct pcmcia_device
*link
)
442 struct net_device
*dev
= link
->priv
;
445 axnet_reset_8390(dev
);
446 AX88190_init(dev
, 1);
447 netif_device_attach(dev
);
454 /*======================================================================
456 MII interface support
458 ======================================================================*/
460 #define MDIO_SHIFT_CLK 0x01
461 #define MDIO_DATA_WRITE0 0x00
462 #define MDIO_DATA_WRITE1 0x08
463 #define MDIO_DATA_READ 0x04
464 #define MDIO_MASK 0x0f
465 #define MDIO_ENB_IN 0x02
467 static void mdio_sync(unsigned int addr
)
470 for (bits
= 0; bits
< 32; bits
++) {
471 outb_p(MDIO_DATA_WRITE1
, addr
);
472 outb_p(MDIO_DATA_WRITE1
| MDIO_SHIFT_CLK
, addr
);
476 static int mdio_read(unsigned int addr
, int phy_id
, int loc
)
478 u_int cmd
= (0xf6<<10)|(phy_id
<<5)|loc
;
482 for (i
= 14; i
>= 0; i
--) {
483 int dat
= (cmd
&(1<<i
)) ? MDIO_DATA_WRITE1
: MDIO_DATA_WRITE0
;
485 outb_p(dat
| MDIO_SHIFT_CLK
, addr
);
487 for (i
= 19; i
> 0; i
--) {
488 outb_p(MDIO_ENB_IN
, addr
);
489 retval
= (retval
<< 1) | ((inb_p(addr
) & MDIO_DATA_READ
) != 0);
490 outb_p(MDIO_ENB_IN
| MDIO_SHIFT_CLK
, addr
);
492 return (retval
>>1) & 0xffff;
495 static void mdio_write(unsigned int addr
, int phy_id
, int loc
, int value
)
497 u_int cmd
= (0x05<<28)|(phy_id
<<23)|(loc
<<18)|(1<<17)|value
;
501 for (i
= 31; i
>= 0; i
--) {
502 int dat
= (cmd
&(1<<i
)) ? MDIO_DATA_WRITE1
: MDIO_DATA_WRITE0
;
504 outb_p(dat
| MDIO_SHIFT_CLK
, addr
);
506 for (i
= 1; i
>= 0; i
--) {
507 outb_p(MDIO_ENB_IN
, addr
);
508 outb_p(MDIO_ENB_IN
| MDIO_SHIFT_CLK
, addr
);
512 /*====================================================================*/
514 static int axnet_open(struct net_device
*dev
)
517 axnet_dev_t
*info
= PRIV(dev
);
518 struct pcmcia_device
*link
= info
->p_dev
;
519 unsigned int nic_base
= dev
->base_addr
;
521 dev_dbg(&link
->dev
, "axnet_open('%s')\n", dev
->name
);
523 if (!pcmcia_dev_present(link
))
526 outb_p(0xFF, nic_base
+ EN0_ISR
); /* Clear bogus intr. */
527 ret
= request_irq(dev
->irq
, ei_irq_wrapper
, IRQF_SHARED
, "axnet_cs", dev
);
533 info
->link_status
= 0x00;
534 init_timer(&info
->watchdog
);
535 info
->watchdog
.function
= &ei_watchdog
;
536 info
->watchdog
.data
= (u_long
)dev
;
537 info
->watchdog
.expires
= jiffies
+ HZ
;
538 add_timer(&info
->watchdog
);
543 /*====================================================================*/
545 static int axnet_close(struct net_device
*dev
)
547 axnet_dev_t
*info
= PRIV(dev
);
548 struct pcmcia_device
*link
= info
->p_dev
;
550 dev_dbg(&link
->dev
, "axnet_close('%s')\n", dev
->name
);
553 free_irq(dev
->irq
, dev
);
556 netif_stop_queue(dev
);
557 del_timer_sync(&info
->watchdog
);
562 /*======================================================================
564 Hard reset the card. This used to pause for the same period that
565 a 8390 reset command required, but that shouldn't be necessary.
567 ======================================================================*/
569 static void axnet_reset_8390(struct net_device
*dev
)
571 unsigned int nic_base
= dev
->base_addr
;
574 ei_status
.txing
= ei_status
.dmaing
= 0;
576 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, nic_base
+ E8390_CMD
);
578 outb(inb(nic_base
+ AXNET_RESET
), nic_base
+ AXNET_RESET
);
580 for (i
= 0; i
< 100; i
++) {
581 if ((inb_p(nic_base
+EN0_ISR
) & ENISR_RESET
) != 0)
585 outb_p(ENISR_RESET
, nic_base
+ EN0_ISR
); /* Ack intr. */
588 printk(KERN_ERR
"%s: axnet_reset_8390() did not complete.\n",
591 } /* axnet_reset_8390 */
593 /*====================================================================*/
595 static irqreturn_t
ei_irq_wrapper(int irq
, void *dev_id
)
597 struct net_device
*dev
= dev_id
;
598 PRIV(dev
)->stale
= 0;
599 return ax_interrupt(irq
, dev_id
);
602 static void ei_watchdog(u_long arg
)
604 struct net_device
*dev
= (struct net_device
*)(arg
);
605 axnet_dev_t
*info
= PRIV(dev
);
606 unsigned int nic_base
= dev
->base_addr
;
607 unsigned int mii_addr
= nic_base
+ AXNET_MII_EEP
;
610 if (!netif_device_present(dev
)) goto reschedule
;
612 /* Check for pending interrupt with expired latency timer: with
613 this, we can limp along even if the interrupt is blocked */
614 if (info
->stale
++ && (inb_p(nic_base
+ EN0_ISR
) & ENISR_ALL
)) {
615 if (!info
->fast_poll
)
616 printk(KERN_INFO
"%s: interrupt(s) dropped!\n", dev
->name
);
617 ei_irq_wrapper(dev
->irq
, dev
);
618 info
->fast_poll
= HZ
;
620 if (info
->fast_poll
) {
622 info
->watchdog
.expires
= jiffies
+ 1;
623 add_timer(&info
->watchdog
);
627 if (info
->phy_id
< 0)
629 link
= mdio_read(mii_addr
, info
->phy_id
, 1);
630 if (!link
|| (link
== 0xffff)) {
631 printk(KERN_INFO
"%s: MII is missing!\n", dev
->name
);
637 if (link
!= info
->link_status
) {
638 u_short p
= mdio_read(mii_addr
, info
->phy_id
, 5);
639 printk(KERN_INFO
"%s: %s link beat\n", dev
->name
,
640 (link
) ? "found" : "lost");
642 info
->duplex_flag
= (p
& 0x0140) ? 0x80 : 0x00;
644 printk(KERN_INFO
"%s: autonegotiation complete: "
645 "%sbaseT-%cD selected\n", dev
->name
,
646 ((p
& 0x0180) ? "100" : "10"),
647 ((p
& 0x0140) ? 'F' : 'H'));
649 printk(KERN_INFO
"%s: link partner did not autonegotiate\n",
651 AX88190_init(dev
, 1);
653 info
->link_status
= link
;
657 info
->watchdog
.expires
= jiffies
+ HZ
;
658 add_timer(&info
->watchdog
);
661 static void netdev_get_drvinfo(struct net_device
*dev
,
662 struct ethtool_drvinfo
*info
)
664 strcpy(info
->driver
, "axnet_cs");
667 static const struct ethtool_ops netdev_ethtool_ops
= {
668 .get_drvinfo
= netdev_get_drvinfo
,
671 /*====================================================================*/
673 static int axnet_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
675 axnet_dev_t
*info
= PRIV(dev
);
676 struct mii_ioctl_data
*data
= if_mii(rq
);
677 unsigned int mii_addr
= dev
->base_addr
+ AXNET_MII_EEP
;
680 data
->phy_id
= info
->phy_id
;
681 case SIOCGMIIREG
: /* Read MII PHY register. */
682 data
->val_out
= mdio_read(mii_addr
, data
->phy_id
, data
->reg_num
& 0x1f);
684 case SIOCSMIIREG
: /* Write MII PHY register. */
685 mdio_write(mii_addr
, data
->phy_id
, data
->reg_num
& 0x1f, data
->val_in
);
691 /*====================================================================*/
693 static void get_8390_hdr(struct net_device
*dev
,
694 struct e8390_pkt_hdr
*hdr
,
697 unsigned int nic_base
= dev
->base_addr
;
699 outb_p(0, nic_base
+ EN0_RSARLO
); /* On page boundary */
700 outb_p(ring_page
, nic_base
+ EN0_RSARHI
);
701 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ AXNET_CMD
);
703 insw(nic_base
+ AXNET_DATAPORT
, hdr
,
704 sizeof(struct e8390_pkt_hdr
)>>1);
705 /* Fix for big endian systems */
706 hdr
->count
= le16_to_cpu(hdr
->count
);
710 /*====================================================================*/
712 static void block_input(struct net_device
*dev
, int count
,
713 struct sk_buff
*skb
, int ring_offset
)
715 unsigned int nic_base
= dev
->base_addr
;
716 int xfer_count
= count
;
717 char *buf
= skb
->data
;
719 if ((ei_debug
> 4) && (count
!= 4))
720 pr_debug("%s: [bi=%d]\n", dev
->name
, count
+4);
721 outb_p(ring_offset
& 0xff, nic_base
+ EN0_RSARLO
);
722 outb_p(ring_offset
>> 8, nic_base
+ EN0_RSARHI
);
723 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ AXNET_CMD
);
725 insw(nic_base
+ AXNET_DATAPORT
,buf
,count
>>1);
727 buf
[count
-1] = inb(nic_base
+ AXNET_DATAPORT
), xfer_count
++;
731 /*====================================================================*/
733 static void block_output(struct net_device
*dev
, int count
,
734 const u_char
*buf
, const int start_page
)
736 unsigned int nic_base
= dev
->base_addr
;
738 pr_debug("%s: [bo=%d]\n", dev
->name
, count
);
740 /* Round the count up for word writes. Do we need to do this?
741 What effect will an odd byte count have on the 8390?
742 I should check someday. */
746 outb_p(0x00, nic_base
+ EN0_RSARLO
);
747 outb_p(start_page
, nic_base
+ EN0_RSARHI
);
748 outb_p(E8390_RWRITE
+E8390_START
, nic_base
+ AXNET_CMD
);
749 outsw(nic_base
+ AXNET_DATAPORT
, buf
, count
>>1);
752 static struct pcmcia_device_id axnet_ids
[] = {
753 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
754 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
755 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
756 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
757 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
758 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
759 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
760 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
761 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
762 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
763 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
764 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
765 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
766 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
767 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
768 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
769 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
770 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXM", 0x5261440f, 0x3abbd061),
771 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
772 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
773 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
774 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
775 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
776 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
777 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
778 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
779 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
782 MODULE_DEVICE_TABLE(pcmcia
, axnet_ids
);
784 static struct pcmcia_driver axnet_cs_driver
= {
785 .owner
= THIS_MODULE
,
789 .probe
= axnet_probe
,
790 .remove
= axnet_detach
,
791 .id_table
= axnet_ids
,
792 .suspend
= axnet_suspend
,
793 .resume
= axnet_resume
,
796 static int __init
init_axnet_cs(void)
798 return pcmcia_register_driver(&axnet_cs_driver
);
801 static void __exit
exit_axnet_cs(void)
803 pcmcia_unregister_driver(&axnet_cs_driver
);
806 module_init(init_axnet_cs
);
807 module_exit(exit_axnet_cs
);
809 /*====================================================================*/
811 /* 8390.c: A general NS8390 ethernet driver core for linux. */
813 Written 1992-94 by Donald Becker.
815 Copyright 1993 United States Government as represented by the
816 Director, National Security Agency.
818 This software may be used and distributed according to the terms
819 of the GNU General Public License, incorporated herein by reference.
821 The author may be reached as becker@scyld.com, or C/O
822 Scyld Computing Corporation
823 410 Severn Ave., Suite 210
826 This is the chip-specific code for many 8390-based ethernet adaptors.
827 This is not a complete driver, it must be combined with board-specific
828 code such as ne.c, wd.c, 3c503.c, etc.
830 Seeing how at least eight drivers use this code, (not counting the
831 PCMCIA ones either) it is easy to break some card by what seems like
832 a simple innocent change. Please contact me or Donald if you think
833 you have found something that needs changing. -- PG
837 Paul Gortmaker : remove set_bit lock, other cleanups.
838 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
839 ei_block_input() for eth_io_copy_and_sum().
840 Paul Gortmaker : exchange static int ei_pingpong for a #define,
841 also add better Tx error handling.
842 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
843 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
844 Paul Gortmaker : tweak ANK's above multicast changes a bit.
845 Paul Gortmaker : update packet statistics for v2.1.x
846 Alan Cox : support arbitary stupid port mappings on the
847 68K Macintosh. Support >16bit I/O spaces
848 Paul Gortmaker : add kmod support for auto-loading of the 8390
849 module by all drivers that require it.
850 Alan Cox : Spinlocking work, added 'BUG_83C690'
851 Paul Gortmaker : Separate out Tx timeout code from Tx path.
854 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
858 static const char version_8390
[] = KERN_INFO \
859 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
861 #include <linux/bitops.h>
863 #include <linux/fcntl.h>
864 #include <linux/in.h>
865 #include <linux/interrupt.h>
869 /* These are the operational function interfaces to board-specific
871 void reset_8390(struct net_device *dev)
872 Resets the board associated with DEV, including a hardware reset of
873 the 8390. This is only called when there is a transmit timeout, and
874 it is always followed by 8390_init().
875 void block_output(struct net_device *dev, int count, const unsigned char *buf,
877 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
878 "page" value uses the 8390's 256-byte pages.
879 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
880 Read the 4 byte, page aligned 8390 header. *If* there is a
881 subsequent read, it will be of the rest of the packet.
882 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
883 Read COUNT bytes from the packet buffer into the skb data area. Start
884 reading from RING_OFFSET, the address as the 8390 sees it. This will always
885 follow the read of the 8390 header.
887 #define ei_reset_8390 (ei_local->reset_8390)
888 #define ei_block_output (ei_local->block_output)
889 #define ei_block_input (ei_local->block_input)
890 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
892 /* use 0 for production, 1 for verification, >2 for debug */
897 /* Index to functions. */
898 static void ei_tx_intr(struct net_device
*dev
);
899 static void ei_tx_err(struct net_device
*dev
);
900 static void ei_receive(struct net_device
*dev
);
901 static void ei_rx_overrun(struct net_device
*dev
);
903 /* Routines generic to NS8390-based boards. */
904 static void NS8390_trigger_send(struct net_device
*dev
, unsigned int length
,
906 static void do_set_multicast_list(struct net_device
*dev
);
909 * SMP and the 8390 setup.
911 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
912 * a page register that controls bank and packet buffer access. We guard
913 * this with ei_local->page_lock. Nobody should assume or set the page other
914 * than zero when the lock is not held. Lock holders must restore page 0
915 * before unlocking. Even pure readers must take the lock to protect in
918 * To make life difficult the chip can also be very slow. We therefore can't
919 * just use spinlocks. For the longer lockups we disable the irq the device
920 * sits on and hold the lock. We must hold the lock because there is a dual
921 * processor case other than interrupts (get stats/set multicast list in
922 * parallel with each other and transmit).
924 * Note: in theory we can just disable the irq on the card _but_ there is
925 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
926 * enter lock, take the queued irq. So we waddle instead of flying.
928 * Finally by special arrangement for the purpose of being generally
929 * annoying the transmit function is called bh atomic. That places
930 * restrictions on the user context callers as disable_irq won't save
935 * ax_open - Open/initialize the board.
936 * @dev: network device to initialize
938 * This routine goes all-out, setting everything
939 * up anew at each open, even though many of these registers should only
940 * need to be set once at boot.
942 static int ax_open(struct net_device
*dev
)
945 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
948 * Grab the page lock so we own the register set, then call
952 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
953 AX88190_init(dev
, 1);
954 /* Set the flag before we drop the lock, That way the IRQ arrives
955 after its set and we get no silly warnings */
956 netif_start_queue(dev
);
957 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
958 ei_local
->irqlock
= 0;
962 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
965 * ax_close - shut down network device
966 * @dev: network device to close
968 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
970 static int ax_close(struct net_device
*dev
)
975 * Hold the page lock during close
978 spin_lock_irqsave(&dev_lock(dev
), flags
);
979 AX88190_init(dev
, 0);
980 spin_unlock_irqrestore(&dev_lock(dev
), flags
);
981 netif_stop_queue(dev
);
986 * axnet_tx_timeout - handle transmit time out condition
987 * @dev: network device which has apparently fallen asleep
989 * Called by kernel when device never acknowledges a transmit has
990 * completed (or failed) - i.e. never posted a Tx related interrupt.
993 static void axnet_tx_timeout(struct net_device
*dev
)
995 long e8390_base
= dev
->base_addr
;
996 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
997 int txsr
, isr
, tickssofar
= jiffies
- dev_trans_start(dev
);
1000 dev
->stats
.tx_errors
++;
1002 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
1003 txsr
= inb(e8390_base
+EN0_TSR
);
1004 isr
= inb(e8390_base
+EN0_ISR
);
1005 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1007 printk(KERN_DEBUG
"%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1008 dev
->name
, (txsr
& ENTSR_ABT
) ? "excess collisions." :
1009 (isr
) ? "lost interrupt?" : "cable problem?", txsr
, isr
, tickssofar
);
1011 if (!isr
&& !dev
->stats
.tx_packets
)
1013 /* The 8390 probably hasn't gotten on the cable yet. */
1014 ei_local
->interface_num
^= 1; /* Try a different xcvr. */
1017 /* Ugly but a reset can be slow, yet must be protected */
1019 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
1021 /* Try to restart the card. Perhaps the user has fixed something. */
1023 AX88190_init(dev
, 1);
1025 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1026 netif_wake_queue(dev
);
1030 * axnet_start_xmit - begin packet transmission
1031 * @skb: packet to be sent
1032 * @dev: network device to which packet is sent
1034 * Sends a packet to an 8390 network device.
1037 static netdev_tx_t
axnet_start_xmit(struct sk_buff
*skb
,
1038 struct net_device
*dev
)
1040 long e8390_base
= dev
->base_addr
;
1041 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1042 int length
, send_length
, output_page
;
1043 unsigned long flags
;
1044 u8 packet
[ETH_ZLEN
];
1046 netif_stop_queue(dev
);
1050 /* Mask interrupts from the ethercard.
1051 SMP: We have to grab the lock here otherwise the IRQ handler
1052 on another CPU can flip window and race the IRQ mask set. We end
1053 up trashing the mcast filter not disabling irqs if we don't lock */
1055 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
1056 outb_p(0x00, e8390_base
+ EN0_IMR
);
1059 * Slow phase with lock held.
1062 ei_local
->irqlock
= 1;
1064 send_length
= max(length
, ETH_ZLEN
);
1067 * We have two Tx slots available for use. Find the first free
1068 * slot, and then perform some sanity checks. With two Tx bufs,
1069 * you get very close to transmitting back-to-back packets. With
1070 * only one Tx buf, the transmitter sits idle while you reload the
1071 * card, leaving a substantial gap between each transmitted packet.
1074 if (ei_local
->tx1
== 0)
1076 output_page
= ei_local
->tx_start_page
;
1077 ei_local
->tx1
= send_length
;
1078 if (ei_debug
&& ei_local
->tx2
> 0)
1079 printk(KERN_DEBUG
"%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1080 dev
->name
, ei_local
->tx2
, ei_local
->lasttx
, ei_local
->txing
);
1082 else if (ei_local
->tx2
== 0)
1084 output_page
= ei_local
->tx_start_page
+ TX_PAGES
/2;
1085 ei_local
->tx2
= send_length
;
1086 if (ei_debug
&& ei_local
->tx1
> 0)
1087 printk(KERN_DEBUG
"%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1088 dev
->name
, ei_local
->tx1
, ei_local
->lasttx
, ei_local
->txing
);
1091 { /* We should never get here. */
1093 printk(KERN_DEBUG
"%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1094 dev
->name
, ei_local
->tx1
, ei_local
->tx2
, ei_local
->lasttx
);
1095 ei_local
->irqlock
= 0;
1096 netif_stop_queue(dev
);
1097 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1098 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1099 dev
->stats
.tx_errors
++;
1100 return NETDEV_TX_BUSY
;
1104 * Okay, now upload the packet and trigger a send if the transmitter
1105 * isn't already sending. If it is busy, the interrupt handler will
1106 * trigger the send later, upon receiving a Tx done interrupt.
1109 if (length
== skb
->len
)
1110 ei_block_output(dev
, length
, skb
->data
, output_page
);
1112 memset(packet
, 0, ETH_ZLEN
);
1113 skb_copy_from_linear_data(skb
, packet
, skb
->len
);
1114 ei_block_output(dev
, length
, packet
, output_page
);
1117 if (! ei_local
->txing
)
1119 ei_local
->txing
= 1;
1120 NS8390_trigger_send(dev
, send_length
, output_page
);
1121 dev
->trans_start
= jiffies
;
1122 if (output_page
== ei_local
->tx_start_page
)
1125 ei_local
->lasttx
= -1;
1130 ei_local
->lasttx
= -2;
1133 else ei_local
->txqueue
++;
1135 if (ei_local
->tx1
&& ei_local
->tx2
)
1136 netif_stop_queue(dev
);
1138 netif_start_queue(dev
);
1140 /* Turn 8390 interrupts back on. */
1141 ei_local
->irqlock
= 0;
1142 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1144 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1146 dev_kfree_skb (skb
);
1147 dev
->stats
.tx_bytes
+= send_length
;
1149 return NETDEV_TX_OK
;
1153 * ax_interrupt - handle the interrupts from an 8390
1154 * @irq: interrupt number
1155 * @dev_id: a pointer to the net_device
1157 * Handle the ether interface interrupts. We pull packets from
1158 * the 8390 via the card specific functions and fire them at the networking
1159 * stack. We also handle transmit completions and wake the transmit path if
1160 * necessary. We also update the counters and do other housekeeping as
1164 static irqreturn_t
ax_interrupt(int irq
, void *dev_id
)
1166 struct net_device
*dev
= dev_id
;
1168 int interrupts
, nr_serviced
= 0, i
;
1169 struct ei_device
*ei_local
;
1171 unsigned long flags
;
1173 e8390_base
= dev
->base_addr
;
1174 ei_local
= netdev_priv(dev
);
1177 * Protect the irq test too.
1180 spin_lock_irqsave(&ei_local
->page_lock
, flags
);
1182 if (ei_local
->irqlock
)
1184 /* The "irqlock" check is only for testing. */
1185 printk(ei_local
->irqlock
1186 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1187 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1188 dev
->name
, inb_p(e8390_base
+ EN0_ISR
),
1189 inb_p(e8390_base
+ EN0_IMR
));
1190 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1195 printk(KERN_DEBUG
"%s: interrupt(isr=%#2.2x).\n", dev
->name
,
1196 inb_p(e8390_base
+ EN0_ISR
));
1198 outb_p(0x00, e8390_base
+ EN0_ISR
);
1199 ei_local
->irqlock
= 1;
1201 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1202 while ((interrupts
= inb_p(e8390_base
+ EN0_ISR
)) != 0 &&
1203 ++nr_serviced
< MAX_SERVICE
)
1205 if (!netif_running(dev
) || (interrupts
== 0xff)) {
1207 printk(KERN_WARNING
"%s: interrupt from stopped card\n", dev
->name
);
1208 outb_p(interrupts
, e8390_base
+ EN0_ISR
);
1214 /* AX88190 bug fix. */
1215 outb_p(interrupts
, e8390_base
+ EN0_ISR
);
1216 for (i
= 0; i
< 10; i
++) {
1217 if (!(inb(e8390_base
+ EN0_ISR
) & interrupts
))
1219 outb_p(0, e8390_base
+ EN0_ISR
);
1220 outb_p(interrupts
, e8390_base
+ EN0_ISR
);
1222 if (interrupts
& ENISR_OVER
)
1224 else if (interrupts
& (ENISR_RX
+ENISR_RX_ERR
))
1226 /* Got a good (?) packet. */
1229 /* Push the next to-transmit packet through. */
1230 if (interrupts
& ENISR_TX
)
1232 else if (interrupts
& ENISR_TX_ERR
)
1235 if (interrupts
& ENISR_COUNTERS
)
1237 dev
->stats
.rx_frame_errors
+= inb_p(e8390_base
+ EN0_COUNTER0
);
1238 dev
->stats
.rx_crc_errors
+= inb_p(e8390_base
+ EN0_COUNTER1
);
1239 dev
->stats
.rx_missed_errors
+= inb_p(e8390_base
+ EN0_COUNTER2
);
1243 if (interrupts
&& ei_debug
> 3)
1246 if (nr_serviced
>= MAX_SERVICE
)
1248 /* 0xFF is valid for a card removal */
1249 if(interrupts
!=0xFF)
1250 printk(KERN_WARNING
"%s: Too much work at interrupt, status %#2.2x\n",
1251 dev
->name
, interrupts
);
1252 outb_p(ENISR_ALL
, e8390_base
+ EN0_ISR
); /* Ack. most intrs. */
1254 printk(KERN_WARNING
"%s: unknown interrupt %#2x\n", dev
->name
, interrupts
);
1255 outb_p(0xff, e8390_base
+ EN0_ISR
); /* Ack. all intrs. */
1259 /* Turn 8390 interrupts back on. */
1260 ei_local
->irqlock
= 0;
1261 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1263 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1264 return IRQ_RETVAL(handled
);
1268 * ei_tx_err - handle transmitter error
1269 * @dev: network device which threw the exception
1271 * A transmitter error has happened. Most likely excess collisions (which
1272 * is a fairly normal condition). If the error is one where the Tx will
1273 * have been aborted, we try and send another one right away, instead of
1274 * letting the failed packet sit and collect dust in the Tx buffer. This
1275 * is a much better solution as it avoids kernel based Tx timeouts, and
1276 * an unnecessary card reset.
1278 * Called with lock held.
1281 static void ei_tx_err(struct net_device
*dev
)
1283 long e8390_base
= dev
->base_addr
;
1284 unsigned char txsr
= inb_p(e8390_base
+EN0_TSR
);
1285 unsigned char tx_was_aborted
= txsr
& (ENTSR_ABT
+ENTSR_FU
);
1287 #ifdef VERBOSE_ERROR_DUMP
1288 printk(KERN_DEBUG
"%s: transmitter error (%#2x): ", dev
->name
, txsr
);
1289 if (txsr
& ENTSR_ABT
)
1290 printk("excess-collisions ");
1291 if (txsr
& ENTSR_ND
)
1292 printk("non-deferral ");
1293 if (txsr
& ENTSR_CRS
)
1294 printk("lost-carrier ");
1295 if (txsr
& ENTSR_FU
)
1296 printk("FIFO-underrun ");
1297 if (txsr
& ENTSR_CDH
)
1298 printk("lost-heartbeat ");
1306 dev
->stats
.tx_errors
++;
1307 if (txsr
& ENTSR_CRS
) dev
->stats
.tx_carrier_errors
++;
1308 if (txsr
& ENTSR_CDH
) dev
->stats
.tx_heartbeat_errors
++;
1309 if (txsr
& ENTSR_OWC
) dev
->stats
.tx_window_errors
++;
1314 * ei_tx_intr - transmit interrupt handler
1315 * @dev: network device for which tx intr is handled
1317 * We have finished a transmit: check for errors and then trigger the next
1318 * packet to be sent. Called with lock held.
1321 static void ei_tx_intr(struct net_device
*dev
)
1323 long e8390_base
= dev
->base_addr
;
1324 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1325 int status
= inb(e8390_base
+ EN0_TSR
);
1328 * There are two Tx buffers, see which one finished, and trigger
1329 * the send of another one if it exists.
1331 ei_local
->txqueue
--;
1333 if (ei_local
->tx1
< 0)
1335 if (ei_local
->lasttx
!= 1 && ei_local
->lasttx
!= -1)
1336 printk(KERN_ERR
"%s: bogus last_tx_buffer %d, tx1=%d.\n",
1337 ei_local
->name
, ei_local
->lasttx
, ei_local
->tx1
);
1339 if (ei_local
->tx2
> 0)
1341 ei_local
->txing
= 1;
1342 NS8390_trigger_send(dev
, ei_local
->tx2
, ei_local
->tx_start_page
+ 6);
1343 dev
->trans_start
= jiffies
;
1345 ei_local
->lasttx
= 2;
1347 else ei_local
->lasttx
= 20, ei_local
->txing
= 0;
1349 else if (ei_local
->tx2
< 0)
1351 if (ei_local
->lasttx
!= 2 && ei_local
->lasttx
!= -2)
1352 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1353 ei_local
->name
, ei_local
->lasttx
, ei_local
->tx2
);
1355 if (ei_local
->tx1
> 0)
1357 ei_local
->txing
= 1;
1358 NS8390_trigger_send(dev
, ei_local
->tx1
, ei_local
->tx_start_page
);
1359 dev
->trans_start
= jiffies
;
1361 ei_local
->lasttx
= 1;
1364 ei_local
->lasttx
= 10, ei_local
->txing
= 0;
1366 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1367 // dev->name, ei_local->lasttx);
1369 /* Minimize Tx latency: update the statistics after we restart TXing. */
1370 if (status
& ENTSR_COL
)
1371 dev
->stats
.collisions
++;
1372 if (status
& ENTSR_PTX
)
1373 dev
->stats
.tx_packets
++;
1376 dev
->stats
.tx_errors
++;
1377 if (status
& ENTSR_ABT
)
1379 dev
->stats
.tx_aborted_errors
++;
1380 dev
->stats
.collisions
+= 16;
1382 if (status
& ENTSR_CRS
)
1383 dev
->stats
.tx_carrier_errors
++;
1384 if (status
& ENTSR_FU
)
1385 dev
->stats
.tx_fifo_errors
++;
1386 if (status
& ENTSR_CDH
)
1387 dev
->stats
.tx_heartbeat_errors
++;
1388 if (status
& ENTSR_OWC
)
1389 dev
->stats
.tx_window_errors
++;
1391 netif_wake_queue(dev
);
1395 * ei_receive - receive some packets
1396 * @dev: network device with which receive will be run
1398 * We have a good packet(s), get it/them out of the buffers.
1399 * Called with lock held.
1402 static void ei_receive(struct net_device
*dev
)
1404 long e8390_base
= dev
->base_addr
;
1405 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1406 unsigned char rxing_page
, this_frame
, next_frame
;
1407 unsigned short current_offset
;
1408 int rx_pkt_count
= 0;
1409 struct e8390_pkt_hdr rx_frame
;
1411 while (++rx_pkt_count
< 10)
1413 int pkt_len
, pkt_stat
;
1415 /* Get the rx page (incoming packet pointer). */
1416 rxing_page
= inb_p(e8390_base
+ EN1_CURPAG
-1);
1418 /* Remove one frame from the ring. Boundary is always a page behind. */
1419 this_frame
= inb_p(e8390_base
+ EN0_BOUNDARY
) + 1;
1420 if (this_frame
>= ei_local
->stop_page
)
1421 this_frame
= ei_local
->rx_start_page
;
1423 /* Someday we'll omit the previous, iff we never get this message.
1424 (There is at least one clone claimed to have a problem.)
1426 Keep quiet if it looks like a card removal. One problem here
1427 is that some clones crash in roughly the same way.
1429 if (ei_debug
> 0 && this_frame
!= ei_local
->current_page
&& (this_frame
!=0x0 || rxing_page
!=0xFF))
1430 printk(KERN_ERR
"%s: mismatched read page pointers %2x vs %2x.\n",
1431 dev
->name
, this_frame
, ei_local
->current_page
);
1433 if (this_frame
== rxing_page
) /* Read all the frames? */
1434 break; /* Done for now */
1436 current_offset
= this_frame
<< 8;
1437 ei_get_8390_hdr(dev
, &rx_frame
, this_frame
);
1439 pkt_len
= rx_frame
.count
- sizeof(struct e8390_pkt_hdr
);
1440 pkt_stat
= rx_frame
.status
;
1442 next_frame
= this_frame
+ 1 + ((pkt_len
+4)>>8);
1444 if (pkt_len
< 60 || pkt_len
> 1518)
1447 printk(KERN_DEBUG
"%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1448 dev
->name
, rx_frame
.count
, rx_frame
.status
,
1450 dev
->stats
.rx_errors
++;
1451 dev
->stats
.rx_length_errors
++;
1453 else if ((pkt_stat
& 0x0F) == ENRSR_RXOK
)
1455 struct sk_buff
*skb
;
1457 skb
= dev_alloc_skb(pkt_len
+2);
1461 printk(KERN_DEBUG
"%s: Couldn't allocate a sk_buff of size %d.\n",
1462 dev
->name
, pkt_len
);
1463 dev
->stats
.rx_dropped
++;
1468 skb_reserve(skb
,2); /* IP headers on 16 byte boundaries */
1469 skb_put(skb
, pkt_len
); /* Make room */
1470 ei_block_input(dev
, pkt_len
, skb
, current_offset
+ sizeof(rx_frame
));
1471 skb
->protocol
=eth_type_trans(skb
,dev
);
1473 dev
->stats
.rx_packets
++;
1474 dev
->stats
.rx_bytes
+= pkt_len
;
1475 if (pkt_stat
& ENRSR_PHY
)
1476 dev
->stats
.multicast
++;
1482 printk(KERN_DEBUG
"%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1483 dev
->name
, rx_frame
.status
, rx_frame
.next
,
1485 dev
->stats
.rx_errors
++;
1486 /* NB: The NIC counts CRC, frame and missed errors. */
1487 if (pkt_stat
& ENRSR_FO
)
1488 dev
->stats
.rx_fifo_errors
++;
1490 next_frame
= rx_frame
.next
;
1492 /* This _should_ never happen: it's here for avoiding bad clones. */
1493 if (next_frame
>= ei_local
->stop_page
) {
1494 printk("%s: next frame inconsistency, %#2x\n", dev
->name
,
1496 next_frame
= ei_local
->rx_start_page
;
1498 ei_local
->current_page
= next_frame
;
1499 outb_p(next_frame
-1, e8390_base
+EN0_BOUNDARY
);
1504 * ei_rx_overrun - handle receiver overrun
1505 * @dev: network device which threw exception
1507 * We have a receiver overrun: we have to kick the 8390 to get it started
1508 * again. Problem is that you have to kick it exactly as NS prescribes in
1509 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1510 * This includes causing "the NIC to defer indefinitely when it is stopped
1511 * on a busy network." Ugh.
1512 * Called with lock held. Don't call this with the interrupts off or your
1513 * computer will hate you - it takes 10ms or so.
1516 static void ei_rx_overrun(struct net_device
*dev
)
1518 axnet_dev_t
*info
= PRIV(dev
);
1519 long e8390_base
= dev
->base_addr
;
1520 unsigned char was_txing
, must_resend
= 0;
1523 * Record whether a Tx was in progress and then issue the
1526 was_txing
= inb_p(e8390_base
+E8390_CMD
) & E8390_TRANS
;
1527 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, e8390_base
+E8390_CMD
);
1530 printk(KERN_DEBUG
"%s: Receiver overrun.\n", dev
->name
);
1531 dev
->stats
.rx_over_errors
++;
1534 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1535 * Early datasheets said to poll the reset bit, but now they say that
1536 * it "is not a reliable indicator and subsequently should be ignored."
1537 * We wait at least 10ms.
1543 * Reset RBCR[01] back to zero as per magic incantation.
1545 outb_p(0x00, e8390_base
+EN0_RCNTLO
);
1546 outb_p(0x00, e8390_base
+EN0_RCNTHI
);
1549 * See if any Tx was interrupted or not. According to NS, this
1550 * step is vital, and skipping it will cause no end of havoc.
1555 unsigned char tx_completed
= inb_p(e8390_base
+EN0_ISR
) & (ENISR_TX
+ENISR_TX_ERR
);
1561 * Have to enter loopback mode and then restart the NIC before
1562 * you are allowed to slurp packets up off the ring.
1564 outb_p(E8390_TXOFF
, e8390_base
+ EN0_TXCR
);
1565 outb_p(E8390_NODMA
+ E8390_PAGE0
+ E8390_START
, e8390_base
+ E8390_CMD
);
1568 * Clear the Rx ring of all the debris, and ack the interrupt.
1573 * Leave loopback mode, and resend any packet that got stopped.
1575 outb_p(E8390_TXCONFIG
| info
->duplex_flag
, e8390_base
+ EN0_TXCR
);
1577 outb_p(E8390_NODMA
+ E8390_PAGE0
+ E8390_START
+ E8390_TRANS
, e8390_base
+ E8390_CMD
);
1581 * Collect the stats. This is called unlocked and from several contexts.
1584 static struct net_device_stats
*get_stats(struct net_device
*dev
)
1586 long ioaddr
= dev
->base_addr
;
1587 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1588 unsigned long flags
;
1590 /* If the card is stopped, just return the present stats. */
1591 if (!netif_running(dev
))
1594 spin_lock_irqsave(&ei_local
->page_lock
,flags
);
1595 /* Read the counter registers, assuming we are in page 0. */
1596 dev
->stats
.rx_frame_errors
+= inb_p(ioaddr
+ EN0_COUNTER0
);
1597 dev
->stats
.rx_crc_errors
+= inb_p(ioaddr
+ EN0_COUNTER1
);
1598 dev
->stats
.rx_missed_errors
+= inb_p(ioaddr
+ EN0_COUNTER2
);
1599 spin_unlock_irqrestore(&ei_local
->page_lock
, flags
);
1605 * Form the 64 bit 8390 multicast table from the linked list of addresses
1606 * associated with this dev structure.
1609 static inline void make_mc_bits(u8
*bits
, struct net_device
*dev
)
1611 struct netdev_hw_addr
*ha
;
1614 netdev_for_each_mc_addr(ha
, dev
) {
1615 crc
= ether_crc(ETH_ALEN
, ha
->addr
);
1617 * The 8390 uses the 6 most significant bits of the
1618 * CRC to index the multicast table.
1620 bits
[crc
>>29] |= (1<<((crc
>>26)&7));
1625 * do_set_multicast_list - set/clear multicast filter
1626 * @dev: net device for which multicast filter is adjusted
1628 * Set or clear the multicast filter for this adaptor.
1629 * Must be called with lock held.
1632 static void do_set_multicast_list(struct net_device
*dev
)
1634 long e8390_base
= dev
->base_addr
;
1636 struct ei_device
*ei_local
= (struct ei_device
*)netdev_priv(dev
);
1638 if (!(dev
->flags
&(IFF_PROMISC
|IFF_ALLMULTI
))) {
1639 memset(ei_local
->mcfilter
, 0, 8);
1640 if (!netdev_mc_empty(dev
))
1641 make_mc_bits(ei_local
->mcfilter
, dev
);
1643 /* set to accept-all */
1644 memset(ei_local
->mcfilter
, 0xFF, 8);
1647 outb_p(E8390_NODMA
+ E8390_PAGE1
, e8390_base
+ E8390_CMD
);
1648 for(i
= 0; i
< 8; i
++)
1650 outb_p(ei_local
->mcfilter
[i
], e8390_base
+ EN1_MULT_SHIFT(i
));
1652 outb_p(E8390_NODMA
+ E8390_PAGE0
, e8390_base
+ E8390_CMD
);
1654 if(dev
->flags
&IFF_PROMISC
)
1655 outb_p(E8390_RXCONFIG
| 0x58, e8390_base
+ EN0_RXCR
);
1656 else if (dev
->flags
& IFF_ALLMULTI
|| !netdev_mc_empty(dev
))
1657 outb_p(E8390_RXCONFIG
| 0x48, e8390_base
+ EN0_RXCR
);
1659 outb_p(E8390_RXCONFIG
| 0x40, e8390_base
+ EN0_RXCR
);
1661 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, e8390_base
+E8390_CMD
);
1665 * Called without lock held. This is invoked from user context and may
1666 * be parallel to just about everything else. Its also fairly quick and
1667 * not called too often. Must protect against both bh and irq users
1670 static void set_multicast_list(struct net_device
*dev
)
1672 unsigned long flags
;
1674 spin_lock_irqsave(&dev_lock(dev
), flags
);
1675 do_set_multicast_list(dev
);
1676 spin_unlock_irqrestore(&dev_lock(dev
), flags
);
1679 /* This page of functions should be 8390 generic */
1680 /* Follow National Semi's recommendations for initializing the "NIC". */
1683 * AX88190_init - initialize 8390 hardware
1684 * @dev: network device to initialize
1685 * @startp: boolean. non-zero value to initiate chip processing
1687 * Must be called with lock held.
1690 static void AX88190_init(struct net_device
*dev
, int startp
)
1692 axnet_dev_t
*info
= PRIV(dev
);
1693 long e8390_base
= dev
->base_addr
;
1694 struct ei_device
*ei_local
= (struct ei_device
*) netdev_priv(dev
);
1696 int endcfg
= ei_local
->word16
? (0x48 | ENDCFG_WTS
) : 0x48;
1698 if(sizeof(struct e8390_pkt_hdr
)!=4)
1699 panic("8390.c: header struct mispacked\n");
1700 /* Follow National Semi's recommendations for initing the DP83902. */
1701 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, e8390_base
+E8390_CMD
); /* 0x21 */
1702 outb_p(endcfg
, e8390_base
+ EN0_DCFG
); /* 0x48 or 0x49 */
1703 /* Clear the remote byte count registers. */
1704 outb_p(0x00, e8390_base
+ EN0_RCNTLO
);
1705 outb_p(0x00, e8390_base
+ EN0_RCNTHI
);
1706 /* Set to monitor and loopback mode -- this is vital!. */
1707 outb_p(E8390_RXOFF
|0x40, e8390_base
+ EN0_RXCR
); /* 0x60 */
1708 outb_p(E8390_TXOFF
, e8390_base
+ EN0_TXCR
); /* 0x02 */
1709 /* Set the transmit page and receive ring. */
1710 outb_p(ei_local
->tx_start_page
, e8390_base
+ EN0_TPSR
);
1711 ei_local
->tx1
= ei_local
->tx2
= 0;
1712 outb_p(ei_local
->rx_start_page
, e8390_base
+ EN0_STARTPG
);
1713 outb_p(ei_local
->stop_page
-1, e8390_base
+ EN0_BOUNDARY
); /* 3c503 says 0x3f,NS0x26*/
1714 ei_local
->current_page
= ei_local
->rx_start_page
; /* assert boundary+1 */
1715 outb_p(ei_local
->stop_page
, e8390_base
+ EN0_STOPPG
);
1716 /* Clear the pending interrupts and mask. */
1717 outb_p(0xFF, e8390_base
+ EN0_ISR
);
1718 outb_p(0x00, e8390_base
+ EN0_IMR
);
1720 /* Copy the station address into the DS8390 registers. */
1722 outb_p(E8390_NODMA
+ E8390_PAGE1
+ E8390_STOP
, e8390_base
+E8390_CMD
); /* 0x61 */
1723 for(i
= 0; i
< 6; i
++)
1725 outb_p(dev
->dev_addr
[i
], e8390_base
+ EN1_PHYS_SHIFT(i
));
1726 if(inb_p(e8390_base
+ EN1_PHYS_SHIFT(i
))!=dev
->dev_addr
[i
])
1727 printk(KERN_ERR
"Hw. address read/write mismap %d\n",i
);
1730 outb_p(ei_local
->rx_start_page
, e8390_base
+ EN1_CURPAG
);
1731 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, e8390_base
+E8390_CMD
);
1733 netif_start_queue(dev
);
1734 ei_local
->tx1
= ei_local
->tx2
= 0;
1735 ei_local
->txing
= 0;
1737 if (info
->flags
& IS_AX88790
) /* select Internal PHY */
1738 outb(0x10, e8390_base
+ AXNET_GPIO
);
1742 outb_p(0xff, e8390_base
+ EN0_ISR
);
1743 outb_p(ENISR_ALL
, e8390_base
+ EN0_IMR
);
1744 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, e8390_base
+E8390_CMD
);
1745 outb_p(E8390_TXCONFIG
| info
->duplex_flag
,
1746 e8390_base
+ EN0_TXCR
); /* xmit on. */
1747 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1748 outb_p(E8390_RXCONFIG
| 0x40, e8390_base
+ EN0_RXCR
); /* rx on, */
1749 do_set_multicast_list(dev
); /* (re)load the mcast table */
1753 /* Trigger a transmit start, assuming the length is valid.
1754 Always called with the page lock held */
1756 static void NS8390_trigger_send(struct net_device
*dev
, unsigned int length
,
1759 long e8390_base
= dev
->base_addr
;
1760 struct ei_device
*ei_local
__attribute((unused
)) = (struct ei_device
*) netdev_priv(dev
);
1762 if (inb_p(e8390_base
) & E8390_TRANS
)
1764 printk(KERN_WARNING
"%s: trigger_send() called with the transmitter busy.\n",
1768 outb_p(length
& 0xff, e8390_base
+ EN0_TCNTLO
);
1769 outb_p(length
>> 8, e8390_base
+ EN0_TCNTHI
);
1770 outb_p(start_page
, e8390_base
+ EN0_TPSR
);
1771 outb_p(E8390_NODMA
+E8390_TRANS
+E8390_START
, e8390_base
+E8390_CMD
);