2 * linux/drivers/acorn/net/etherh.c
4 * Copyright (C) 2000-2002 Russell King
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * NS8390 I-cubed EtherH and ANT EtherM specific driver
11 * Thanks to I-Cubed for information on their cards.
12 * EtherM conversion (C) 1999 Chris Kemp and Tim Watterton
13 * EtherM integration (C) 2000 Aleph One Ltd (Tak-Shing Chan)
14 * EtherM integration re-engineered by Russell King.
17 * 08-12-1996 RMK 1.00 Created
18 * RMK 1.03 Added support for EtherLan500 cards
19 * 23-11-1997 RMK 1.04 Added media autodetection
20 * 16-04-1998 RMK 1.05 Improved media autodetection
21 * 10-02-2000 RMK 1.06 Updated for 2.3.43
22 * 13-05-2000 RMK 1.07 Updated for 2.3.99-pre8
23 * 12-10-1999 CK/TEW EtherM driver first release
24 * 21-12-2000 TTC EtherH/EtherM integration
25 * 25-12-2000 RMK 1.08 Clean integration of EtherM into this driver.
26 * 03-01-2002 RMK 1.09 Always enable IRQs if we're in the nic slot.
29 #include <linux/module.h>
30 #include <linux/kernel.h>
31 #include <linux/sched.h>
32 #include <linux/types.h>
33 #include <linux/fcntl.h>
34 #include <linux/interrupt.h>
35 #include <linux/ptrace.h>
36 #include <linux/ioport.h>
38 #include <linux/slab.h>
39 #include <linux/string.h>
40 #include <linux/errno.h>
41 #include <linux/netdevice.h>
42 #include <linux/etherdevice.h>
43 #include <linux/ethtool.h>
44 #include <linux/skbuff.h>
45 #include <linux/delay.h>
46 #include <linux/device.h>
47 #include <linux/init.h>
48 #include <linux/bitops.h>
49 #include <linux/jiffies.h>
51 #include <asm/system.h>
52 #include <asm/ecard.h>
55 #define EI_SHIFT(x) (ei_local->reg_offset[x])
57 #define ei_inb(_p) readb((void __iomem *)_p)
58 #define ei_outb(_v,_p) writeb(_v,(void __iomem *)_p)
59 #define ei_inb_p(_p) readb((void __iomem *)_p)
60 #define ei_outb_p(_v,_p) writeb(_v,(void __iomem *)_p)
65 #define DRV_NAME "etherh"
66 #define DRV_VERSION "1.11"
68 static char version[] __initdata =
69 "EtherH/EtherM Driver (c) 2002-2004 Russell King " DRV_VERSION "\n";
71 #include "../lib8390.c"
73 static unsigned int net_debug = NET_DEBUG;
76 void __iomem *ioc_fast;
78 void __iomem *dma_base;
80 void __iomem *ctrl_port;
86 unsigned long ns8390_offset;
87 unsigned long dataport_offset;
88 unsigned long ctrlport_offset;
92 unsigned char tx_start_page;
93 unsigned char stop_page;
96 MODULE_AUTHOR("Russell King");
97 MODULE_DESCRIPTION("EtherH/EtherM driver");
98 MODULE_LICENSE("GPL");
100 #define ETHERH500_DATAPORT 0x800 /* MEMC */
101 #define ETHERH500_NS8390 0x000 /* MEMC */
102 #define ETHERH500_CTRLPORT 0x800 /* IOC */
104 #define ETHERH600_DATAPORT 0x040 /* MEMC */
105 #define ETHERH600_NS8390 0x800 /* MEMC */
106 #define ETHERH600_CTRLPORT 0x200 /* MEMC */
108 #define ETHERH_CP_IE 1
109 #define ETHERH_CP_IF 2
110 #define ETHERH_CP_HEARTBEAT 2
112 #define ETHERH_TX_START_PAGE 1
113 #define ETHERH_STOP_PAGE 127
116 * These came from CK/TEW
118 #define ETHERM_DATAPORT 0x200 /* MEMC */
119 #define ETHERM_NS8390 0x800 /* MEMC */
120 #define ETHERM_CTRLPORT 0x23c /* MEMC */
122 #define ETHERM_TX_START_PAGE 64
123 #define ETHERM_STOP_PAGE 127
125 /* ------------------------------------------------------------------------ */
127 #define etherh_priv(dev) \
128 ((struct etherh_priv *)(((char *)netdev_priv(dev)) + sizeof(struct ei_device)))
130 static inline void etherh_set_ctrl(struct etherh_priv *eh, unsigned char mask)
132 unsigned char ctrl = eh->ctrl | mask;
134 writeb(ctrl, eh->ctrl_port);
137 static inline void etherh_clr_ctrl(struct etherh_priv *eh, unsigned char mask)
139 unsigned char ctrl = eh->ctrl & ~mask;
141 writeb(ctrl, eh->ctrl_port);
144 static inline unsigned int etherh_get_stat(struct etherh_priv *eh)
146 return readb(eh->ctrl_port);
152 static void etherh_irq_enable(ecard_t *ec, int irqnr)
154 struct etherh_priv *eh = ec->irq_data;
156 etherh_set_ctrl(eh, ETHERH_CP_IE);
159 static void etherh_irq_disable(ecard_t *ec, int irqnr)
161 struct etherh_priv *eh = ec->irq_data;
163 etherh_clr_ctrl(eh, ETHERH_CP_IE);
166 static expansioncard_ops_t etherh_ops = {
167 .irqenable = etherh_irq_enable,
168 .irqdisable = etherh_irq_disable,
175 etherh_setif(struct net_device *dev)
177 struct ei_device *ei_local = netdev_priv(dev);
181 local_irq_save(flags);
183 /* set the interface type */
184 switch (etherh_priv(dev)->id) {
185 case PROD_I3_ETHERLAN600:
186 case PROD_I3_ETHERLAN600A:
187 addr = (void __iomem *)dev->base_addr + EN0_RCNTHI;
189 switch (dev->if_port) {
190 case IF_PORT_10BASE2:
191 writeb((readb(addr) & 0xf8) | 1, addr);
193 case IF_PORT_10BASET:
194 writeb((readb(addr) & 0xf8), addr);
199 case PROD_I3_ETHERLAN500:
200 switch (dev->if_port) {
201 case IF_PORT_10BASE2:
202 etherh_clr_ctrl(etherh_priv(dev), ETHERH_CP_IF);
205 case IF_PORT_10BASET:
206 etherh_set_ctrl(etherh_priv(dev), ETHERH_CP_IF);
215 local_irq_restore(flags);
219 etherh_getifstat(struct net_device *dev)
221 struct ei_device *ei_local = netdev_priv(dev);
225 switch (etherh_priv(dev)->id) {
226 case PROD_I3_ETHERLAN600:
227 case PROD_I3_ETHERLAN600A:
228 addr = (void __iomem *)dev->base_addr + EN0_RCNTHI;
229 switch (dev->if_port) {
230 case IF_PORT_10BASE2:
233 case IF_PORT_10BASET:
234 stat = readb(addr) & 4;
239 case PROD_I3_ETHERLAN500:
240 switch (dev->if_port) {
241 case IF_PORT_10BASE2:
244 case IF_PORT_10BASET:
245 stat = etherh_get_stat(etherh_priv(dev)) & ETHERH_CP_HEARTBEAT;
259 * Configure the interface. Note that we ignore the other
260 * parts of ifmap, since its mostly meaningless for this driver.
262 static int etherh_set_config(struct net_device *dev, struct ifmap *map)
265 case IF_PORT_10BASE2:
266 case IF_PORT_10BASET:
268 * If the user explicitly sets the interface
269 * media type, turn off automedia detection.
271 dev->flags &= ~IFF_AUTOMEDIA;
272 dev->if_port = map->port;
285 * Reset the 8390 (hard reset). Note that we can't actually do this.
288 etherh_reset(struct net_device *dev)
290 struct ei_device *ei_local = netdev_priv(dev);
291 void __iomem *addr = (void __iomem *)dev->base_addr;
293 writeb(E8390_NODMA+E8390_PAGE0+E8390_STOP, addr);
296 * See if we need to change the interface type.
297 * Note that we use 'interface_num' as a flag
298 * to indicate that we need to change the media.
300 if (dev->flags & IFF_AUTOMEDIA && ei_local->interface_num) {
301 ei_local->interface_num = 0;
303 if (dev->if_port == IF_PORT_10BASET)
304 dev->if_port = IF_PORT_10BASE2;
306 dev->if_port = IF_PORT_10BASET;
313 * Write a block of data out to the 8390
316 etherh_block_output (struct net_device *dev, int count, const unsigned char *buf, int start_page)
318 struct ei_device *ei_local = netdev_priv(dev);
319 unsigned long dma_start;
320 void __iomem *dma_base, *addr;
322 if (ei_local->dmaing) {
323 printk(KERN_ERR "%s: DMAing conflict in etherh_block_input: "
324 " DMAstat %d irqlock %d\n", dev->name,
325 ei_local->dmaing, ei_local->irqlock);
330 * Make sure we have a round number of bytes if we're in word mode.
332 if (count & 1 && ei_local->word16)
335 ei_local->dmaing = 1;
337 addr = (void __iomem *)dev->base_addr;
338 dma_base = etherh_priv(dev)->dma_base;
340 count = (count + 1) & ~1;
341 writeb (E8390_NODMA | E8390_PAGE0 | E8390_START, addr + E8390_CMD);
343 writeb (0x42, addr + EN0_RCNTLO);
344 writeb (0x00, addr + EN0_RCNTHI);
345 writeb (0x42, addr + EN0_RSARLO);
346 writeb (0x00, addr + EN0_RSARHI);
347 writeb (E8390_RREAD | E8390_START, addr + E8390_CMD);
351 writeb (ENISR_RDC, addr + EN0_ISR);
352 writeb (count, addr + EN0_RCNTLO);
353 writeb (count >> 8, addr + EN0_RCNTHI);
354 writeb (0, addr + EN0_RSARLO);
355 writeb (start_page, addr + EN0_RSARHI);
356 writeb (E8390_RWRITE | E8390_START, addr + E8390_CMD);
358 if (ei_local->word16)
359 writesw (dma_base, buf, count >> 1);
361 writesb (dma_base, buf, count);
365 while ((readb (addr + EN0_ISR) & ENISR_RDC) == 0)
366 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
367 printk(KERN_ERR "%s: timeout waiting for TX RDC\n",
370 __NS8390_init (dev, 1);
374 writeb (ENISR_RDC, addr + EN0_ISR);
375 ei_local->dmaing = 0;
379 * Read a block of data from the 8390
382 etherh_block_input (struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
384 struct ei_device *ei_local = netdev_priv(dev);
386 void __iomem *dma_base, *addr;
388 if (ei_local->dmaing) {
389 printk(KERN_ERR "%s: DMAing conflict in etherh_block_input: "
390 " DMAstat %d irqlock %d\n", dev->name,
391 ei_local->dmaing, ei_local->irqlock);
395 ei_local->dmaing = 1;
397 addr = (void __iomem *)dev->base_addr;
398 dma_base = etherh_priv(dev)->dma_base;
401 writeb (E8390_NODMA | E8390_PAGE0 | E8390_START, addr + E8390_CMD);
402 writeb (count, addr + EN0_RCNTLO);
403 writeb (count >> 8, addr + EN0_RCNTHI);
404 writeb (ring_offset, addr + EN0_RSARLO);
405 writeb (ring_offset >> 8, addr + EN0_RSARHI);
406 writeb (E8390_RREAD | E8390_START, addr + E8390_CMD);
408 if (ei_local->word16) {
409 readsw (dma_base, buf, count >> 1);
411 buf[count - 1] = readb (dma_base);
413 readsb (dma_base, buf, count);
415 writeb (ENISR_RDC, addr + EN0_ISR);
416 ei_local->dmaing = 0;
420 * Read a header from the 8390
423 etherh_get_header (struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
425 struct ei_device *ei_local = netdev_priv(dev);
426 void __iomem *dma_base, *addr;
428 if (ei_local->dmaing) {
429 printk(KERN_ERR "%s: DMAing conflict in etherh_get_header: "
430 " DMAstat %d irqlock %d\n", dev->name,
431 ei_local->dmaing, ei_local->irqlock);
435 ei_local->dmaing = 1;
437 addr = (void __iomem *)dev->base_addr;
438 dma_base = etherh_priv(dev)->dma_base;
440 writeb (E8390_NODMA | E8390_PAGE0 | E8390_START, addr + E8390_CMD);
441 writeb (sizeof (*hdr), addr + EN0_RCNTLO);
442 writeb (0, addr + EN0_RCNTHI);
443 writeb (0, addr + EN0_RSARLO);
444 writeb (ring_page, addr + EN0_RSARHI);
445 writeb (E8390_RREAD | E8390_START, addr + E8390_CMD);
447 if (ei_local->word16)
448 readsw (dma_base, hdr, sizeof (*hdr) >> 1);
450 readsb (dma_base, hdr, sizeof (*hdr));
452 writeb (ENISR_RDC, addr + EN0_ISR);
453 ei_local->dmaing = 0;
457 * Open/initialize the board. This is called (in the current kernel)
458 * sometime after booting when the 'ifconfig' program is run.
460 * This routine should set everything up anew at each open, even
461 * registers that "should" only need to be set once at boot, so that
462 * there is non-reboot way to recover if something goes wrong.
465 etherh_open(struct net_device *dev)
467 struct ei_device *ei_local = netdev_priv(dev);
469 if (!is_valid_ether_addr(dev->dev_addr)) {
470 printk(KERN_WARNING "%s: invalid ethernet MAC address\n",
475 if (request_irq(dev->irq, __ei_interrupt, 0, dev->name, dev))
479 * Make sure that we aren't going to change the
480 * media type on the next reset - we are about to
481 * do automedia manually now.
483 ei_local->interface_num = 0;
486 * If we are doing automedia detection, do it now.
487 * This is more reliable than the 8390's detection.
489 if (dev->flags & IFF_AUTOMEDIA) {
490 dev->if_port = IF_PORT_10BASET;
493 if (!etherh_getifstat(dev)) {
494 dev->if_port = IF_PORT_10BASE2;
507 * The inverse routine to etherh_open().
510 etherh_close(struct net_device *dev)
513 free_irq (dev->irq, dev);
521 static void __init etherh_banner(void)
523 static int version_printed;
525 if (net_debug && version_printed++ == 0)
526 printk(KERN_INFO "%s", version);
530 * Read the ethernet address string from the on board rom.
531 * This is an ascii string...
533 static int __init etherh_addr(char *addr, struct expansion_card *ec)
535 struct in_chunk_dir cd;
538 if (!ecard_readchunk(&cd, ec, 0xf5, 0)) {
539 printk(KERN_ERR "%s: unable to read podule description string\n",
544 s = strchr(cd.d.string, '(');
548 for (i = 0; i < 6; i++) {
549 addr[i] = simple_strtoul(s + 1, &s, 0x10);
550 if (*s != (i == 5? ')' : ':'))
558 printk(KERN_ERR "%s: unable to parse MAC address: %s\n",
559 ec->dev.bus_id, cd.d.string);
566 * Create an ethernet address from the system serial number.
568 static int __init etherm_addr(char *addr)
572 if (system_serial_low == 0 && system_serial_high == 0)
575 serial = system_serial_low | system_serial_high;
580 addr[3] = 0x10 + (serial >> 24);
581 addr[4] = serial >> 16;
582 addr[5] = serial >> 8;
586 static void etherh_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
588 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
589 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
590 strlcpy(info->bus_info, dev->dev.parent->bus_id,
591 sizeof(info->bus_info));
594 static int etherh_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
596 cmd->supported = etherh_priv(dev)->supported;
597 cmd->speed = SPEED_10;
598 cmd->duplex = DUPLEX_HALF;
599 cmd->port = dev->if_port == IF_PORT_10BASET ? PORT_TP : PORT_BNC;
600 cmd->autoneg = dev->flags & IFF_AUTOMEDIA ? AUTONEG_ENABLE : AUTONEG_DISABLE;
604 static int etherh_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
606 switch (cmd->autoneg) {
608 dev->flags |= IFF_AUTOMEDIA;
611 case AUTONEG_DISABLE:
614 dev->if_port = IF_PORT_10BASET;
618 dev->if_port = IF_PORT_10BASE2;
624 dev->flags &= ~IFF_AUTOMEDIA;
636 static const struct ethtool_ops etherh_ethtool_ops = {
637 .get_settings = etherh_get_settings,
638 .set_settings = etherh_set_settings,
639 .get_drvinfo = etherh_get_drvinfo,
642 static u32 etherh_regoffsets[16];
643 static u32 etherm_regoffsets[16];
646 etherh_probe(struct expansion_card *ec, const struct ecard_id *id)
648 const struct etherh_data *data = id->data;
649 struct ei_device *ei_local;
650 struct net_device *dev;
651 struct etherh_priv *eh;
656 ret = ecard_request_resources(ec);
660 dev = ____alloc_ei_netdev(sizeof(struct etherh_priv));
666 SET_MODULE_OWNER(dev);
667 SET_NETDEV_DEV(dev, &ec->dev);
669 dev->open = etherh_open;
670 dev->stop = etherh_close;
671 dev->set_config = etherh_set_config;
673 dev->ethtool_ops = ðerh_ethtool_ops;
675 if (data->supported & SUPPORTED_Autoneg)
676 dev->flags |= IFF_AUTOMEDIA;
677 if (data->supported & SUPPORTED_TP) {
678 dev->flags |= IFF_PORTSEL;
679 dev->if_port = IF_PORT_10BASET;
680 } else if (data->supported & SUPPORTED_BNC) {
681 dev->flags |= IFF_PORTSEL;
682 dev->if_port = IF_PORT_10BASE2;
684 dev->if_port = IF_PORT_UNKNOWN;
686 eh = etherh_priv(dev);
687 eh->supported = data->supported;
689 eh->id = ec->cid.product;
690 eh->memc = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), PAGE_SIZE);
696 eh->ctrl_port = eh->memc;
697 if (data->ctrl_ioc) {
698 eh->ioc_fast = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST), PAGE_SIZE);
703 eh->ctrl_port = eh->ioc_fast;
706 dev->base_addr = (unsigned long)eh->memc + data->ns8390_offset;
707 eh->dma_base = eh->memc + data->dataport_offset;
708 eh->ctrl_port += data->ctrlport_offset;
711 * IRQ and control port handling - only for non-NIC slot cards.
713 if (ec->slot_no != 8) {
714 ec->ops = ðerh_ops;
718 * If we're in the NIC slot, make sure the IRQ is enabled
720 etherh_set_ctrl(eh, ETHERH_CP_IE);
723 ei_local = netdev_priv(dev);
724 spin_lock_init(&ei_local->page_lock);
726 if (ec->cid.product == PROD_ANT_ETHERM) {
727 etherm_addr(dev->dev_addr);
728 ei_local->reg_offset = etherm_regoffsets;
730 etherh_addr(dev->dev_addr, ec);
731 ei_local->reg_offset = etherh_regoffsets;
734 ei_local->name = dev->name;
735 ei_local->word16 = 1;
736 ei_local->tx_start_page = data->tx_start_page;
737 ei_local->rx_start_page = ei_local->tx_start_page + TX_PAGES;
738 ei_local->stop_page = data->stop_page;
739 ei_local->reset_8390 = etherh_reset;
740 ei_local->block_input = etherh_block_input;
741 ei_local->block_output = etherh_block_output;
742 ei_local->get_8390_hdr = etherh_get_header;
743 ei_local->interface_num = 0;
746 __NS8390_init(dev, 0);
748 ret = register_netdev(dev);
752 printk(KERN_INFO "%s: %s in slot %d, ",
753 dev->name, data->name, ec->slot_no);
755 for (i = 0; i < 6; i++)
756 printk("%2.2x%c", dev->dev_addr[i], i == 5 ? '\n' : ':');
758 ecard_set_drvdata(ec, dev);
764 iounmap(eh->ioc_fast);
769 ecard_release_resources(ec);
774 static void __devexit etherh_remove(struct expansion_card *ec)
776 struct net_device *dev = ecard_get_drvdata(ec);
777 struct etherh_priv *eh = etherh_priv(dev);
779 ecard_set_drvdata(ec, NULL);
781 unregister_netdev(dev);
785 iounmap(eh->ioc_fast);
790 ecard_release_resources(ec);
793 static struct etherh_data etherm_data = {
794 .ns8390_offset = ETHERM_NS8390,
795 .dataport_offset = ETHERM_NS8390 + ETHERM_DATAPORT,
796 .ctrlport_offset = ETHERM_NS8390 + ETHERM_CTRLPORT,
797 .name = "ANT EtherM",
798 .supported = SUPPORTED_10baseT_Half,
799 .tx_start_page = ETHERM_TX_START_PAGE,
800 .stop_page = ETHERM_STOP_PAGE,
803 static struct etherh_data etherlan500_data = {
804 .ns8390_offset = ETHERH500_NS8390,
805 .dataport_offset = ETHERH500_NS8390 + ETHERH500_DATAPORT,
806 .ctrlport_offset = ETHERH500_CTRLPORT,
808 .name = "i3 EtherH 500",
809 .supported = SUPPORTED_10baseT_Half,
810 .tx_start_page = ETHERH_TX_START_PAGE,
811 .stop_page = ETHERH_STOP_PAGE,
814 static struct etherh_data etherlan600_data = {
815 .ns8390_offset = ETHERH600_NS8390,
816 .dataport_offset = ETHERH600_NS8390 + ETHERH600_DATAPORT,
817 .ctrlport_offset = ETHERH600_NS8390 + ETHERH600_CTRLPORT,
818 .name = "i3 EtherH 600",
819 .supported = SUPPORTED_10baseT_Half | SUPPORTED_TP | SUPPORTED_BNC | SUPPORTED_Autoneg,
820 .tx_start_page = ETHERH_TX_START_PAGE,
821 .stop_page = ETHERH_STOP_PAGE,
824 static struct etherh_data etherlan600a_data = {
825 .ns8390_offset = ETHERH600_NS8390,
826 .dataport_offset = ETHERH600_NS8390 + ETHERH600_DATAPORT,
827 .ctrlport_offset = ETHERH600_NS8390 + ETHERH600_CTRLPORT,
828 .name = "i3 EtherH 600A",
829 .supported = SUPPORTED_10baseT_Half | SUPPORTED_TP | SUPPORTED_BNC | SUPPORTED_Autoneg,
830 .tx_start_page = ETHERH_TX_START_PAGE,
831 .stop_page = ETHERH_STOP_PAGE,
834 static const struct ecard_id etherh_ids[] = {
835 { MANU_ANT, PROD_ANT_ETHERM, ðerm_data },
836 { MANU_I3, PROD_I3_ETHERLAN500, ðerlan500_data },
837 { MANU_I3, PROD_I3_ETHERLAN600, ðerlan600_data },
838 { MANU_I3, PROD_I3_ETHERLAN600A, ðerlan600a_data },
842 static struct ecard_driver etherh_driver = {
843 .probe = etherh_probe,
844 .remove = __devexit_p(etherh_remove),
845 .id_table = etherh_ids,
851 static int __init etherh_init(void)
855 for (i = 0; i < 16; i++) {
856 etherh_regoffsets[i] = i << 2;
857 etherm_regoffsets[i] = i << 5;
860 return ecard_register_driver(ðerh_driver);
863 static void __exit etherh_exit(void)
865 ecard_remove_driver(ðerh_driver);
868 module_init(etherh_init);
869 module_exit(etherh_exit);