1 /* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
3     Written 1992-94 by Donald Becker.
14     This driver should work with many programmed-I/O 8390-based ethernet
22     Paul Gortmaker	: new reset code, reset card after probe at boot.
25     Paul Gortmaker	: Allow users with bad cards to avoid full probe.
26     Paul Gortmaker	: PCI probe changes, more PCI cards supported.
28     occur after memory is allocated for dev->priv. Deallocated memory
31     Paul Gortmaker	: Discontinued PCI support - use ne2k-pci.c instead.
36 /* Routines for the NatSemi-based designs (NE[12]000). */
66 /* 0xbad = bad sig or no reset ack */
99 that the ne2k probe is the last 8390 based probe to take place (as it
100 is at boot) and so the probe will get confused by any other 8390 cards.
103 /* Do we need a portlist for the ISA auto-probe ? */
107 /* A zero-terminated list of I/O addresses to be probed at boot. */
130 /* A list of bad clones that we none-the-less recognize. */
137     {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
138     {"NN1000", "NN2000",  {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
139     {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}},  /* Outlaw 4-Dimension cards. */
140     {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
141     {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
143     {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
144     {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
145     {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
147     {"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}},  /* Toshiba built-in */
149     {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
154 /* ---- No user-serviceable parts below ---- */
156 #define NE_BASE	 (dev->base_addr)
158 #define NE_DATAPORT	0x10	/* NatSemi-defined port window offset. */
159 #define NE_RESET	0x1f	/* Issue a read to reset, a write to clear. */
168 #  define DCR_VAL 0x48		/* 8-bit mode */
169 #elif defined(CONFIG_ATARI)	/* 8-bit mode on Atari, normal on Q40 */
187 /*  Probe for various non-shared-memory ethercards.
189    NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
194    Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
197    The probe is also responsible for initializing the card and filling
204 	E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
206 	E2010-x starts at 0x100 and ends at 0xffff.  */
210 	unsigned long base_addr = dev->base_addr;  in do_ne_probe()
212 	int orig_irq = dev->irq;  in do_ne_probe()
223 	else if (base_addr != 0)	/* Don't probe at all. */  in do_ne_probe()
224 		return -ENXIO;  in do_ne_probe()
231 	/* Last resort. The semi-risky ISA auto-probe. */  in do_ne_probe()
234 		dev->irq = orig_irq;  in do_ne_probe()
240 	return -ENODEV;  in do_ne_probe()
267 			dev->base_addr = pnp_port_start(idev, 0);  in ne_probe_isapnp()
268 			dev->irq = pnp_irq(idev, 0);  in ne_probe_isapnp()
272 				    dev->base_addr, dev->irq);  in ne_probe_isapnp()
273 			if (ne_probe1(dev, dev->base_addr) != 0) {	/* Shouldn't happen. */  in ne_probe_isapnp()
275 					   "ne.c: Probe of ISAPnP card at %#lx failed.\n",  in ne_probe_isapnp()
276 					   dev->base_addr);  in ne_probe_isapnp()
278 				return -ENXIO;  in ne_probe_isapnp()
288 	return -ENODEV;  in ne_probe_isapnp()
304 		return -EBUSY;  in ne_probe1()
308 		ret = -ENODEV;  in ne_probe1()
323 			ret = -ENODEV;  in ne_probe1()
331 	netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr);  in ne_probe1()
333 	/* A user with a poor card that fails to ack the reset, or that  in ne_probe1()
336 	   with an otherwise unused dev->mem_end value of "0xBAD" will  in ne_probe1()
337 	   cause the driver to skip these parts of the probe. */  in ne_probe1()
339 	bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));  in ne_probe1()
341 	/* Reset card. Who knows what dain-bramaged state it was left in. */  in ne_probe1()
346 		/* DON'T change these to inb_p/outb_p or reset will fail on clones. */  in ne_probe1()
352 				pr_cont(" (warning: no reset ack)");  in ne_probe1()
355 				pr_cont(" not found (no reset ack).\n");  in ne_probe1()
356 				ret = -ENODEV;  in ne_probe1()
372 			{0x48,	EN0_DCFG},	/* Set byte-wide (0x48) access. */  in ne_probe1()
407 		 * shouldn't exceed 0x60 in 8-bit mode.  in ne_probe1()
409 		 * the  remote byte count registers (otherwise write-only)...  in ne_probe1()
411 		if ((DCR_VAL & 0x01) == 0 &&		/* 8-bit mode */  in ne_probe1()
432 		name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";  in ne_probe1()
460 			ret = -ENXIO;  in ne_probe1()
465 		ret = -ENXIO;  in ne_probe1()
470 	if (dev->irq < 2)  in ne_probe1()
479 		dev->irq = probe_irq_off(cookie);  in ne_probe1()
481 			pr_cont(" autoirq is %d", dev->irq);  in ne_probe1()
482 	} else if (dev->irq == 2)  in ne_probe1()
485 		dev->irq = 9;  in ne_probe1()
487 	if (! dev->irq) {  in ne_probe1()
489 		ret = -EAGAIN;  in ne_probe1()
495 	ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);  in ne_probe1()
497 		pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);  in ne_probe1()
501 	dev->base_addr = ioaddr;  in ne_probe1()
504 		dev->dev_addr[i] = SA_prom[i];  in ne_probe1()
507 	pr_cont("%pM\n", dev->dev_addr);  in ne_probe1()
513 	/* Use 16-bit mode only if this wasn't overridden by DCR_VAL */  in ne_probe1()
518 	 /* Allow the packet buffer size to be overridden by know-it-alls. */  in ne_probe1()
528 	dev->netdev_ops = &eip_netdev_ops;  in ne_probe1()
531 	ei_local->msg_enable = ne_msg_enable;  in ne_probe1()
536 		    name, ioaddr, dev->irq);  in ne_probe1()
540 	free_irq(dev->irq, dev);  in ne_probe1()
546 /* Hard reset the card.  This used to pause for the same period that a
547    8390 reset command required, but that shouldn't be necessary. */
556 	/* DON'T change these to inb_p/outb_p or reset will fail on clones. */  in ne_reset_8390()
577 	int nic_base = dev->base_addr;  in ne_get_8390_hdr()
605 	le16_to_cpus(&hdr->count);  in ne_get_8390_hdr()
610    The NEx000 doesn't share the on-board packet memory -- you have to put
619 	int nic_base = dev->base_addr;  in ne_block_input()
620 	char *buf = skb->data;  in ne_block_input()
642 			buf[count-1] = inb(NE_BASE + NE_DATAPORT);  in ne_block_input()
663 			   -- it's broken for Rx on some cards! */  in ne_block_input()
669 		} while (--tries > 0);  in ne_block_input()
714 	/* Handle the read-before-write bug the same way as the  in ne_block_output()
715 	   Crynwr packet driver -- the NatSemi method doesn't work.  in ne_block_output()
759 		} while (--tries > 0);  in ne_block_output()
787 	int err, this_dev = pdev->id;  in ne_drv_probe()
792 		return -ENOMEM;  in ne_drv_probe()
800 		dev->base_addr = res->start;  in ne_drv_probe()
801 		dev->irq = platform_get_irq(pdev, 0);  in ne_drv_probe()
805 			return -EINVAL;  in ne_drv_probe()
807 		dev->base_addr = io[this_dev];  in ne_drv_probe()
808 		dev->irq = irq[this_dev];  in ne_drv_probe()
809 		dev->mem_end = bad[this_dev];  in ne_drv_probe()
811 	SET_NETDEV_DEV(dev, &pdev->dev);  in ne_drv_probe()
823 		io[this_dev] = dev->base_addr;  in ne_drv_probe()
824 		irq[this_dev] = dev->irq;  in ne_drv_probe()
844 		free_irq(dev->irq, dev);  in ne_drv_remove()
845 		release_region(dev->base_addr, NE_IO_EXTENT);  in ne_drv_remove()
964 			return ERR_PTR(-ENOMEM);  in ne_probe()
970 		return ERR_PTR(-ENOMEM);  in ne_probe()
972 	sprintf(dev->name, "eth%d", unit);  in ne_probe()
975 	io[this_dev] = dev->base_addr;  in ne_probe()
976 	irq[this_dev] = dev->irq;  in ne_probe()
977 	bad[this_dev] = dev->mem_end;  in ne_probe()
992 	return ERR_PTR(-ENODEV);  in ne_probe()