1 // SPDX-License-Identifier: GPL-1.0+
2 /* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
4     Written 1992-94 by Donald Becker.
12     This driver should work with many programmed-I/O 8390-based ethernet
20     Paul Gortmaker	: new reset code, reset card after probe at boot.
23     Paul Gortmaker	: Allow users with bad cards to avoid full probe.
24     Paul Gortmaker	: PCI probe changes, more PCI cards supported.
26     occur after memory is allocated for dev->priv. Deallocated memory
29     Paul Gortmaker	: Discontinued PCI support - use ne2k-pci.c instead.
34 /* Routines for the NatSemi-based designs (NE[12]000). */
65 /* 0xbad = bad sig or no reset ack */
98 that the ne2k probe is the last 8390 based probe to take place (as it
99 is at boot) and so the probe will get confused by any other 8390 cards.
102 /* Do we need a portlist for the ISA auto-probe ? */
106 /* A zero-terminated list of I/O addresses to be probed at boot. */
129 /* A list of bad clones that we none-the-less recognize. */
136     {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
137     {"NN1000", "NN2000",  {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
138     {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}},  /* Outlaw 4-Dimension cards. */
139     {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
140     {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
142     {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
143     {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
144     {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
146     {"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}},  /* Toshiba built-in */
148     {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
153 /* ---- No user-serviceable parts below ---- */
155 #define NE_BASE	 (dev->base_addr)
157 #define NE_DATAPORT	0x10	/* NatSemi-defined port window offset. */
158 #define NE_RESET	0x1f	/* Issue a read to reset, a write to clear. */
167 #  define DCR_VAL 0x48		/* 8-bit mode */
168 #elif defined(CONFIG_ATARI)	/* 8-bit mode on Atari, normal on Q40 */
186 /*  Probe for various non-shared-memory ethercards.
188    NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
193    Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
196    The probe is also responsible for initializing the card and filling
203 	E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
205 	E2010-x starts at 0x100 and ends at 0xffff.  */
209 	unsigned long base_addr = dev->base_addr;  in do_ne_probe()
211 	int orig_irq = dev->irq;  in do_ne_probe()
222 	else if (base_addr != 0)	/* Don't probe at all. */  in do_ne_probe()
223 		return -ENXIO;  in do_ne_probe()
230 	/* Last resort. The semi-risky ISA auto-probe. */  in do_ne_probe()
233 		dev->irq = orig_irq;  in do_ne_probe()
239 	return -ENODEV;  in do_ne_probe()
266 			dev->base_addr = pnp_port_start(idev, 0);  in ne_probe_isapnp()
267 			dev->irq = pnp_irq(idev, 0);  in ne_probe_isapnp()
271 				    dev->base_addr, dev->irq);  in ne_probe_isapnp()
272 			if (ne_probe1(dev, dev->base_addr) != 0) {	/* Shouldn't happen. */  in ne_probe_isapnp()
274 					   "ne.c: Probe of ISAPnP card at %#lx failed.\n",  in ne_probe_isapnp()
275 					   dev->base_addr);  in ne_probe_isapnp()
277 				return -ENXIO;  in ne_probe_isapnp()
287 	return -ENODEV;  in ne_probe_isapnp()
303 		return -EBUSY;  in ne_probe1()
307 		ret = -ENODEV;  in ne_probe1()
322 			ret = -ENODEV;  in ne_probe1()
330 	netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr);  in ne_probe1()
332 	/* A user with a poor card that fails to ack the reset, or that  in ne_probe1()
335 	   with an otherwise unused dev->mem_end value of "0xBAD" will  in ne_probe1()
336 	   cause the driver to skip these parts of the probe. */  in ne_probe1()
338 	bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));  in ne_probe1()
340 	/* Reset card. Who knows what dain-bramaged state it was left in. */  in ne_probe1()
345 		/* DON'T change these to inb_p/outb_p or reset will fail on clones. */  in ne_probe1()
351 				pr_cont(" (warning: no reset ack)");  in ne_probe1()
354 				pr_cont(" not found (no reset ack).\n");  in ne_probe1()
355 				ret = -ENODEV;  in ne_probe1()
371 			{0x48,	EN0_DCFG},	/* Set byte-wide (0x48) access. */  in ne_probe1()
406 		 * shouldn't exceed 0x60 in 8-bit mode.  in ne_probe1()
408 		 * the  remote byte count registers (otherwise write-only)...  in ne_probe1()
410 		if ((DCR_VAL & 0x01) == 0 &&		/* 8-bit mode */  in ne_probe1()
431 		name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";  in ne_probe1()
459 			ret = -ENXIO;  in ne_probe1()
464 		ret = -ENXIO;  in ne_probe1()
469 	if (dev->irq < 2)  in ne_probe1()
478 		dev->irq = probe_irq_off(cookie);  in ne_probe1()
480 			pr_cont(" autoirq is %d", dev->irq);  in ne_probe1()
481 	} else if (dev->irq == 2)  in ne_probe1()
484 		dev->irq = 9;  in ne_probe1()
486 	if (! dev->irq) {  in ne_probe1()
488 		ret = -EAGAIN;  in ne_probe1()
494 	ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);  in ne_probe1()
496 		pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);  in ne_probe1()
500 	dev->base_addr = ioaddr;  in ne_probe1()
504 	pr_cont("%pM\n", dev->dev_addr);  in ne_probe1()
510 	/* Use 16-bit mode only if this wasn't overridden by DCR_VAL */  in ne_probe1()
515 	 /* Allow the packet buffer size to be overridden by know-it-alls. */  in ne_probe1()
525 	dev->netdev_ops = &eip_netdev_ops;  in ne_probe1()
528 	ei_local->msg_enable = ne_msg_enable;  in ne_probe1()
533 		    name, ioaddr, dev->irq);  in ne_probe1()
537 	free_irq(dev->irq, dev);  in ne_probe1()
543 /* Hard reset the card.  This used to pause for the same period that a
544    8390 reset command required, but that shouldn't be necessary. */
553 	/* DON'T change these to inb_p/outb_p or reset will fail on clones. */  in ne_reset_8390()
574 	int nic_base = dev->base_addr;  in ne_get_8390_hdr()
602 	le16_to_cpus(&hdr->count);  in ne_get_8390_hdr()
607    The NEx000 doesn't share the on-board packet memory -- you have to put
616 	int nic_base = dev->base_addr;  in ne_block_input()
617 	char *buf = skb->data;  in ne_block_input()
639 			buf[count-1] = inb(NE_BASE + NE_DATAPORT);  in ne_block_input()
660 			   -- it's broken for Rx on some cards! */  in ne_block_input()
666 		} while (--tries > 0);  in ne_block_input()
711 	/* Handle the read-before-write bug the same way as the  in ne_block_output()
712 	   Crynwr packet driver -- the NatSemi method doesn't work.  in ne_block_output()
756 		} while (--tries > 0);  in ne_block_output()
784 	int err, this_dev = pdev->id;  in ne_drv_probe()
789 		return -ENOMEM;  in ne_drv_probe()
797 		dev->base_addr = res->start;  in ne_drv_probe()
798 		dev->irq = platform_get_irq(pdev, 0);  in ne_drv_probe()
802 			return -EINVAL;  in ne_drv_probe()
804 		dev->base_addr = io[this_dev];  in ne_drv_probe()
805 		dev->irq = irq[this_dev];  in ne_drv_probe()
806 		dev->mem_end = bad[this_dev];  in ne_drv_probe()
808 	SET_NETDEV_DEV(dev, &pdev->dev);  in ne_drv_probe()
820 		io[this_dev] = dev->base_addr;  in ne_drv_probe()
821 		irq[this_dev] = dev->irq;  in ne_drv_probe()
841 		free_irq(dev->irq, dev);  in ne_drv_remove()
842 		release_region(dev->base_addr, NE_IO_EXTENT);  in ne_drv_remove()
955 			return ERR_PTR(-ENOMEM);  in ne_probe()
961 		return ERR_PTR(-ENOMEM);  in ne_probe()
963 	sprintf(dev->name, "eth%d", unit);  in ne_probe()
966 	io[this_dev] = dev->base_addr;  in ne_probe()
967 	irq[this_dev] = dev->irq;  in ne_probe()
968 	bad[this_dev] = dev->mem_end;  in ne_probe()
983 	return ERR_PTR(-ENODEV);  in ne_probe()