1 /* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike)
2 Ethernet cards on Linux */
3 /* Based on the former daynaport.c driver, by Alan Cox. Some code
4 taken from or inspired by skeleton.c by Donald Becker, acenic.c by
5 Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker.
7 This software may be used and distributed according to the terms of
8 the GNU Public License, incorporated herein by reference. */
10 /* 2000-02-28: support added for Dayna and Kinetics cards by
14 /* 2001-05-15: support for Cabletron ported from old daynaport driver
15 * and fixed access to Sonic Sys card which masquerades as a Farallon
17 /* 2002-12-30: Try to support more cards, some clues from NetBSD driver */
18 /* 2003-12-26: Make sure Asante cards always work. */
20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/types.h>
25 #include <linux/fcntl.h>
26 #include <linux/interrupt.h>
27 #include <linux/ptrace.h>
28 #include <linux/ioport.h>
29 #include <linux/nubus.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/errno.h>
34 #include <linux/init.h>
35 #include <linux/netdevice.h>
36 #include <linux/etherdevice.h>
37 #include <linux/skbuff.h>
38 #include <linux/bitops.h>
41 #include <asm/system.h>
43 #include <asm/hwtest.h>
44 #include <asm/macints.h>
46 static char version[] =
49 #define EI_SHIFT(x) (ei_local->reg_offset[x])
50 #define ei_inb(port) in_8(port)
51 #define ei_outb(val, port) out_8(port, val)
52 #define ei_inb_p(port) in_8(port)
53 #define ei_outb_p(val, port) out_8(port, val)
57 #define WD_START_PG 0x00 /* First page of TX buffer */
58 #define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */
59 #define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */
60 #define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG
61 /* First page of TX buffer */
64 * Unfortunately it seems we have to hardcode these for the moment
65 * Shouldn't the card know about this?
66 * Does anyone know where to read it off the card?
67 * Do we trust the data provided by the card?
70 #define DAYNA_8390_BASE 0x80000
71 #define DAYNA_8390_MEM 0x00000
73 #define CABLETRON_8390_BASE 0x90000
74 #define CABLETRON_8390_MEM 0x00000
76 #define INTERLAN_8390_BASE 0xE0000
77 #define INTERLAN_8390_MEM 0xD0000
90 static const char *cardname[] = {
100 static const int word16[] = {
110 /* on which cards do we use NuBus resources? */
111 static const int useresources[] = {
121 enum mac8390_access {
127 extern int mac8390_memtest(struct net_device *dev);
128 static int mac8390_initdev(struct net_device *dev, struct nubus_dev *ndev,
129 enum mac8390_type type);
131 static int mac8390_open(struct net_device *dev);
132 static int mac8390_close(struct net_device *dev);
133 static void mac8390_no_reset(struct net_device *dev);
134 static void interlan_reset(struct net_device *dev);
136 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/
137 static void sane_get_8390_hdr(struct net_device *dev,
138 struct e8390_pkt_hdr *hdr, int ring_page);
139 static void sane_block_input(struct net_device *dev, int count,
140 struct sk_buff *skb, int ring_offset);
141 static void sane_block_output(struct net_device *dev, int count,
142 const unsigned char *buf, const int start_page);
144 /* dayna_memcpy to and from card */
145 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
146 int from, int count);
147 static void dayna_memcpy_tocard(struct net_device *dev, int to,
148 const void *from, int count);
150 /* Dayna - Dayna/Kinetics use this */
151 static void dayna_get_8390_hdr(struct net_device *dev,
152 struct e8390_pkt_hdr *hdr, int ring_page);
153 static void dayna_block_input(struct net_device *dev, int count,
154 struct sk_buff *skb, int ring_offset);
155 static void dayna_block_output(struct net_device *dev, int count,
156 const unsigned char *buf, int start_page);
158 #define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
159 #define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
161 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
162 static void slow_sane_get_8390_hdr(struct net_device *dev,
163 struct e8390_pkt_hdr *hdr, int ring_page);
164 static void slow_sane_block_input(struct net_device *dev, int count,
165 struct sk_buff *skb, int ring_offset);
166 static void slow_sane_block_output(struct net_device *dev, int count,
167 const unsigned char *buf, int start_page);
168 static void word_memcpy_tocard(void *tp, const void *fp, int count);
169 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
171 static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
173 switch (dev->dr_sw) {
174 case NUBUS_DRSW_3COM:
175 switch (dev->dr_hw) {
176 case NUBUS_DRHW_APPLE_SONIC_NB:
177 case NUBUS_DRHW_APPLE_SONIC_LC:
178 case NUBUS_DRHW_SONNET:
182 return MAC8390_APPLE;
187 case NUBUS_DRSW_APPLE:
188 switch (dev->dr_hw) {
189 case NUBUS_DRHW_ASANTE_LC:
192 case NUBUS_DRHW_CABLETRON:
193 return MAC8390_CABLETRON;
196 return MAC8390_APPLE;
201 case NUBUS_DRSW_ASANTE:
202 return MAC8390_ASANTE;
205 case NUBUS_DRSW_TECHWORKS:
206 case NUBUS_DRSW_DAYNA2:
207 case NUBUS_DRSW_DAYNA_LC:
208 if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
209 return MAC8390_CABLETRON;
211 return MAC8390_APPLE;
214 case NUBUS_DRSW_FARALLON:
215 return MAC8390_FARALLON;
218 case NUBUS_DRSW_KINETICS:
219 switch (dev->dr_hw) {
220 case NUBUS_DRHW_INTERLAN:
221 return MAC8390_INTERLAN;
224 return MAC8390_KINETICS;
229 case NUBUS_DRSW_DAYNA:
231 * These correspond to Dayna Sonic cards
232 * which use the macsonic driver
234 if (dev->dr_hw == NUBUS_DRHW_SMC9194 ||
235 dev->dr_hw == NUBUS_DRHW_INTERLAN)
238 return MAC8390_DAYNA;
244 static enum mac8390_access __init mac8390_testio(volatile unsigned long membase)
246 unsigned long outdata = 0xA5A0B5B0;
247 unsigned long indata = 0x00000000;
248 /* Try writing 32 bits */
249 memcpy(membase, &outdata, 4);
250 /* Now compare them */
251 if (memcmp((char *)&outdata, (char *)membase, 4) == 0)
253 /* Write 16 bit output */
254 word_memcpy_tocard(membase, &outdata, 4);
255 /* Now read it back */
256 word_memcpy_fromcard(&indata, membase, 4);
257 if (outdata == indata)
259 return ACCESS_UNKNOWN;
262 static int __init mac8390_memsize(unsigned long membase)
267 local_irq_save(flags);
268 /* Check up to 32K in 4K increments */
269 for (i = 0; i < 8; i++) {
270 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000));
272 /* Unwriteable - we have a fully decoded card and the
274 if (hwreg_present(m) == 0)
277 /* write a distinctive byte */
279 /* check that we read back what we wrote */
280 if (*m != (0xA5A0 | i))
283 /* check for partial decode and wrap */
284 for (j = 0; j < i; j++) {
285 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000));
286 if (*p != (0xA5A0 | j))
290 local_irq_restore(flags);
292 * in any case, we stopped once we tried one block too many,
293 * or once we reached 32K
298 static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev,
299 enum mac8390_type cardtype)
301 struct nubus_dir dir;
302 struct nubus_dirent ent;
304 volatile unsigned short *i;
306 printk_once(KERN_INFO pr_fmt("%s"), version);
308 dev->irq = SLOT2IRQ(ndev->board->slot);
309 /* This is getting to be a habit */
310 dev->base_addr = (ndev->board->slot_addr |
311 ((ndev->board->slot & 0xf) << 20));
314 * Get some Nubus info - we will trust the card's idea
315 * of where its memory and registers are.
318 if (nubus_get_func_dir(ndev, &dir) == -1) {
319 pr_err("%s: Unable to get Nubus functional directory for slot %X!\n",
320 dev->name, ndev->board->slot);
324 /* Get the MAC address */
325 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) {
326 pr_info("%s: Couldn't get MAC address!\n", dev->name);
330 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
332 if (useresources[cardtype] == 1) {
333 nubus_rewinddir(&dir);
334 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS,
336 pr_err("%s: Memory offset resource for slot %X not found!\n",
337 dev->name, ndev->board->slot);
340 nubus_get_rsrc_mem(&offset, &ent, 4);
341 dev->mem_start = dev->base_addr + offset;
342 /* yes, this is how the Apple driver does it */
343 dev->base_addr = dev->mem_start + 0x10000;
344 nubus_rewinddir(&dir);
345 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH,
347 pr_info("%s: Memory length resource for slot %X not found, probing\n",
348 dev->name, ndev->board->slot);
349 offset = mac8390_memsize(dev->mem_start);
351 nubus_get_rsrc_mem(&offset, &ent, 4);
353 dev->mem_end = dev->mem_start + offset;
356 case MAC8390_KINETICS:
357 case MAC8390_DAYNA: /* it's the same */
358 dev->base_addr = (int)(ndev->board->slot_addr +
360 dev->mem_start = (int)(ndev->board->slot_addr +
362 dev->mem_end = dev->mem_start +
363 mac8390_memsize(dev->mem_start);
365 case MAC8390_INTERLAN:
366 dev->base_addr = (int)(ndev->board->slot_addr +
368 dev->mem_start = (int)(ndev->board->slot_addr +
370 dev->mem_end = dev->mem_start +
371 mac8390_memsize(dev->mem_start);
373 case MAC8390_CABLETRON:
374 dev->base_addr = (int)(ndev->board->slot_addr +
375 CABLETRON_8390_BASE);
376 dev->mem_start = (int)(ndev->board->slot_addr +
378 /* The base address is unreadable if 0x00
379 * has been written to the command register
380 * Reset the chip by writing E8390_NODMA +
381 * E8390_PAGE0 + E8390_STOP just to be
384 i = (void *)dev->base_addr;
386 dev->mem_end = dev->mem_start +
387 mac8390_memsize(dev->mem_start);
391 pr_err("Card type %s is unsupported, sorry\n",
400 struct net_device * __init mac8390_probe(int unit)
402 struct net_device *dev;
403 struct nubus_dev *ndev = NULL;
406 static unsigned int slots;
408 enum mac8390_type cardtype;
410 /* probably should check for Nubus instead */
413 return ERR_PTR(-ENODEV);
415 dev = ____alloc_ei_netdev(0);
417 return ERR_PTR(-ENOMEM);
420 sprintf(dev->name, "eth%d", unit);
422 while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET,
424 /* Have we seen it already? */
425 if (slots & (1 << ndev->board->slot))
427 slots |= 1 << ndev->board->slot;
429 cardtype = mac8390_ident(ndev);
430 if (cardtype == MAC8390_NONE)
433 if (!mac8390_init(dev, ndev, cardtype))
436 /* Do the nasty 8390 stuff */
437 if (!mac8390_initdev(dev, ndev, cardtype))
443 err = register_netdev(dev);
455 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
456 MODULE_LICENSE("GPL");
458 /* overkill, of course */
459 static struct net_device *dev_mac8390[15];
460 int init_module(void)
463 for (i = 0; i < 15; i++) {
464 struct net_device *dev = mac8390_probe(-1);
470 pr_notice("No useable cards found, driver NOT installed.\n");
476 void cleanup_module(void)
479 for (i = 0; i < 15; i++) {
480 struct net_device *dev = dev_mac890[i];
482 unregister_netdev(dev);
490 static const struct net_device_ops mac8390_netdev_ops = {
491 .ndo_open = mac8390_open,
492 .ndo_stop = mac8390_close,
493 .ndo_start_xmit = __ei_start_xmit,
494 .ndo_tx_timeout = __ei_tx_timeout,
495 .ndo_get_stats = __ei_get_stats,
496 .ndo_set_multicast_list = __ei_set_multicast_list,
497 .ndo_validate_addr = eth_validate_addr,
498 .ndo_set_mac_address = eth_mac_addr,
499 .ndo_change_mtu = eth_change_mtu,
500 #ifdef CONFIG_NET_POLL_CONTROLLER
501 .ndo_poll_controller = __ei_poll,
505 static int __init mac8390_initdev(struct net_device *dev,
506 struct nubus_dev *ndev,
507 enum mac8390_type type)
509 static u32 fwrd4_offsets[16] = {
515 static u32 back4_offsets[16] = {
521 static u32 fwrd2_offsets[16] = {
528 int access_bitmode = 0;
530 /* Now fill in our stuff */
531 dev->netdev_ops = &mac8390_netdev_ops;
533 /* GAR, ei_status is actually a macro even though it looks global */
534 ei_status.name = cardname[type];
535 ei_status.word16 = word16[type];
537 /* Cabletron's TX/RX buffers are backwards */
538 if (type == MAC8390_CABLETRON) {
539 ei_status.tx_start_page = CABLETRON_TX_START_PG;
540 ei_status.rx_start_page = CABLETRON_RX_START_PG;
541 ei_status.stop_page = CABLETRON_RX_STOP_PG;
542 ei_status.rmem_start = dev->mem_start;
543 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
545 ei_status.tx_start_page = WD_START_PG;
546 ei_status.rx_start_page = WD_START_PG + TX_PAGES;
547 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
548 ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
549 ei_status.rmem_end = dev->mem_end;
552 /* Fill in model-specific information and functions */
554 case MAC8390_FARALLON:
556 switch (mac8390_testio(dev->mem_start)) {
558 pr_info("Don't know how to access card memory!\n");
563 /* 16 bit card, register map is reversed */
564 ei_status.reset_8390 = &mac8390_no_reset;
565 ei_status.block_input = &slow_sane_block_input;
566 ei_status.block_output = &slow_sane_block_output;
567 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
568 ei_status.reg_offset = back4_offsets;
572 /* 32 bit card, register map is reversed */
573 ei_status.reset_8390 = &mac8390_no_reset;
574 ei_status.block_input = &sane_block_input;
575 ei_status.block_output = &sane_block_output;
576 ei_status.get_8390_hdr = &sane_get_8390_hdr;
577 ei_status.reg_offset = back4_offsets;
584 /* Some Asante cards pass the 32 bit test
585 * but overwrite system memory when run at 32 bit.
586 * so we run them all at 16 bit.
588 ei_status.reset_8390 = &mac8390_no_reset;
589 ei_status.block_input = &slow_sane_block_input;
590 ei_status.block_output = &slow_sane_block_output;
591 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
592 ei_status.reg_offset = back4_offsets;
595 case MAC8390_CABLETRON:
596 /* 16 bit card, register map is short forward */
597 ei_status.reset_8390 = &mac8390_no_reset;
598 ei_status.block_input = &slow_sane_block_input;
599 ei_status.block_output = &slow_sane_block_output;
600 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
601 ei_status.reg_offset = fwrd2_offsets;
605 case MAC8390_KINETICS:
606 /* 16 bit memory, register map is forward */
607 /* dayna and similar */
608 ei_status.reset_8390 = &mac8390_no_reset;
609 ei_status.block_input = &dayna_block_input;
610 ei_status.block_output = &dayna_block_output;
611 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
612 ei_status.reg_offset = fwrd4_offsets;
615 case MAC8390_INTERLAN:
616 /* 16 bit memory, register map is forward */
617 ei_status.reset_8390 = &interlan_reset;
618 ei_status.block_input = &slow_sane_block_input;
619 ei_status.block_output = &slow_sane_block_output;
620 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
621 ei_status.reg_offset = fwrd4_offsets;
625 pr_err("Card type %s is unsupported, sorry\n",
630 __NS8390_init(dev, 0);
632 /* Good, done, now spit out some messages */
633 pr_info("%s: %s in slot %X (type %s)\n",
634 dev->name, ndev->board->name, ndev->board->slot,
636 pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n",
637 dev->dev_addr, dev->irq,
638 (unsigned int)(dev->mem_end - dev->mem_start) >> 10,
639 dev->mem_start, access_bitmode ? 32 : 16);
643 static int mac8390_open(struct net_device *dev)
646 if (request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev)) {
647 pr_info("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
653 static int mac8390_close(struct net_device *dev)
655 free_irq(dev->irq, dev);
660 static void mac8390_no_reset(struct net_device *dev)
664 pr_info("reset not supported\n");
668 static void interlan_reset(struct net_device *dev)
670 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq));
672 pr_info("Need to reset the NS8390 t=%lu...", jiffies);
676 pr_cont("reset complete\n");
680 /* dayna_memcpy_fromio/dayna_memcpy_toio */
681 /* directly from daynaport.c by Alan Cox */
682 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from,
685 volatile unsigned char *ptr;
686 unsigned char *target = to;
687 from <<= 1; /* word, skip overhead */
688 ptr = (unsigned char *)(dev->mem_start+from);
696 *(unsigned short *)target = *(unsigned short volatile *)ptr;
697 ptr += 4; /* skip cruft */
706 static void dayna_memcpy_tocard(struct net_device *dev, int to,
707 const void *from, int count)
709 volatile unsigned short *ptr;
710 const unsigned char *src = from;
711 to <<= 1; /* word, skip overhead */
712 ptr = (unsigned short *)(dev->mem_start+to);
714 if (to & 2) { /* avoid a byte write (stomps on other data) */
715 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
720 *ptr++ = *(unsigned short *)src; /* Copy and */
721 ptr++; /* skip cruft */
727 /* card doesn't like byte writes */
728 *ptr = (*ptr & 0x00FF) | (*src << 8);
732 /* sane block input/output */
733 static void sane_get_8390_hdr(struct net_device *dev,
734 struct e8390_pkt_hdr *hdr, int ring_page)
736 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
737 memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
739 hdr->count = swab16(hdr->count);
742 static void sane_block_input(struct net_device *dev, int count,
743 struct sk_buff *skb, int ring_offset)
745 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
746 unsigned long xfer_start = xfer_base + dev->mem_start;
748 if (xfer_start + count > ei_status.rmem_end) {
749 /* We must wrap the input move. */
750 int semi_count = ei_status.rmem_end - xfer_start;
751 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base,
754 memcpy_toio(skb->data + semi_count,
755 (char *)ei_status.rmem_start, count);
757 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base,
762 static void sane_block_output(struct net_device *dev, int count,
763 const unsigned char *buf, int start_page)
765 long shmem = (start_page - WD_START_PG)<<8;
767 memcpy_toio((char *)dev->mem_start + shmem, buf, count);
770 /* dayna block input/output */
771 static void dayna_get_8390_hdr(struct net_device *dev,
772 struct e8390_pkt_hdr *hdr, int ring_page)
774 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
776 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4);
778 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8);
781 static void dayna_block_input(struct net_device *dev, int count,
782 struct sk_buff *skb, int ring_offset)
784 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
785 unsigned long xfer_start = xfer_base+dev->mem_start;
787 /* Note the offset math is done in card memory space which is word
788 per long onto our space. */
790 if (xfer_start + count > ei_status.rmem_end) {
791 /* We must wrap the input move. */
792 int semi_count = ei_status.rmem_end - xfer_start;
793 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
795 dayna_memcpy_fromcard(dev, skb->data + semi_count,
796 ei_status.rmem_start - dev->mem_start,
799 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
803 static void dayna_block_output(struct net_device *dev, int count,
804 const unsigned char *buf,
807 long shmem = (start_page - WD_START_PG)<<8;
809 dayna_memcpy_tocard(dev, shmem, buf, count);
812 /* Cabletron block I/O */
813 static void slow_sane_get_8390_hdr(struct net_device *dev,
814 struct e8390_pkt_hdr *hdr,
817 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
818 word_memcpy_fromcard(hdr, (char *)dev->mem_start + hdr_start, 4);
819 /* Register endianism - fix here rather than 8390.c */
820 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
823 static void slow_sane_block_input(struct net_device *dev, int count,
824 struct sk_buff *skb, int ring_offset)
826 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
827 unsigned long xfer_start = xfer_base+dev->mem_start;
829 if (xfer_start + count > ei_status.rmem_end) {
830 /* We must wrap the input move. */
831 int semi_count = ei_status.rmem_end - xfer_start;
832 word_memcpy_fromcard(skb->data,
833 (char *)dev->mem_start + xfer_base,
836 word_memcpy_fromcard(skb->data + semi_count,
837 (char *)ei_status.rmem_start, count);
839 word_memcpy_fromcard(skb->data,
840 (char *)dev->mem_start + xfer_base, count);
844 static void slow_sane_block_output(struct net_device *dev, int count,
845 const unsigned char *buf, int start_page)
847 long shmem = (start_page - WD_START_PG)<<8;
849 word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
852 static void word_memcpy_tocard(void *tp, const void *fp, int count)
854 volatile unsigned short *to = tp;
855 const unsigned short *from = fp;
864 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
866 unsigned short *to = tp;
867 const volatile unsigned short *from = fp;