Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 424 insertions, 0 deletions

diff --git a/drivers/net/ac3200.c b/drivers/net/ac3200.c
new file mode 100644
index 000000000000..24fba36b5c1d
--- /dev/null
+++ b/drivers/net/ac3200.c
@@ -0,0 +1,424 @@
+/* ac3200.c: A driver for the Ansel Communications EISA ethernet adaptor. */
+/*
+	Written 1993, 1994 by Donald Becker.
+	Copyright 1993 United States Government as represented by the Director,
+	National Security Agency.  This software may only be used and distributed
+	according to the terms of the GNU General Public License as modified by SRC,
+	incorporated herein by reference.
+
+	The author may be reached as becker@scyld.com, or C/O
+	Scyld Computing Corporation
+	410 Severn Ave., Suite 210
+	Annapolis MD 21403
+
+	This is driver for the Ansel Communications Model 3200 EISA Ethernet LAN
+	Adapter.  The programming information is from the users manual, as related
+	by glee@ardnassak.math.clemson.edu.
+
+	Changelog:
+
+	Paul Gortmaker 05/98	: add support for shared mem above 1MB.
+
+  */
+
+static const char version[] =
+	"ac3200.c:v1.01 7/1/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
+
+#include <linux/module.h>
+#include <linux/eisa.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include "8390.h"
+
+#define DRV_NAME	"ac3200"
+
+/* Offsets from the base address. */
+#define AC_NIC_BASE	0x00
+#define AC_SA_PROM	0x16			/* The station address PROM. */
+#define AC_ADDR0	0x00			/* Prefix station address values. */
+#define AC_ADDR1	0x40			
+#define AC_ADDR2	0x90
+#define AC_ID_PORT	0xC80
+#define AC_EISA_ID	0x0110d305
+#define AC_RESET_PORT	0xC84
+#define AC_RESET	0x00
+#define AC_ENABLE	0x01
+#define AC_CONFIG	0xC90	/* The configuration port. */
+
+#define AC_IO_EXTENT 0x20
+                                /* Actually accessed is:
+								 * AC_NIC_BASE (0-15)
+								 * AC_SA_PROM (0-5)
+								 * AC_ID_PORT (0-3)
+								 * AC_RESET_PORT
+								 * AC_CONFIG
+								 */
+
+/* Decoding of the configuration register. */
+static unsigned char config2irqmap[8] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
+static int addrmap[8] =
+{0xFF0000, 0xFE0000, 0xFD0000, 0xFFF0000, 0xFFE0000, 0xFFC0000,  0xD0000, 0 };
+static const char *port_name[4] = { "10baseT", "invalid", "AUI", "10base2"};
+
+#define config2irq(configval)	config2irqmap[((configval) >> 3) & 7]
+#define config2mem(configval)	addrmap[(configval) & 7]
+#define config2name(configval)	port_name[((configval) >> 6) & 3]
+
+/* First and last 8390 pages. */
+#define AC_START_PG		0x00	/* First page of 8390 TX buffer */
+#define AC_STOP_PG		0x80	/* Last page +1 of the 8390 RX ring */
+
+static int ac_probe1(int ioaddr, struct net_device *dev);
+
+static int ac_open(struct net_device *dev);
+static void ac_reset_8390(struct net_device *dev);
+static void ac_block_input(struct net_device *dev, int count,
+					struct sk_buff *skb, int ring_offset);
+static void ac_block_output(struct net_device *dev, const int count,
+							const unsigned char *buf, const int start_page);
+static void ac_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
+					int ring_page);
+
+static int ac_close_card(struct net_device *dev);
+
+
+/*	Probe for the AC3200.
+
+	The AC3200 can be identified by either the EISA configuration registers,
+	or the unique value in the station address PROM.
+	*/
+
+static int __init do_ac3200_probe(struct net_device *dev)
+{
+	unsigned short ioaddr = dev->base_addr;
+	int irq = dev->irq;
+	int mem_start = dev->mem_start;
+
+	SET_MODULE_OWNER(dev);
+
+	if (ioaddr > 0x1ff)		/* Check a single specified location. */
+		return ac_probe1(ioaddr, dev);
+	else if (ioaddr > 0)		/* Don't probe at all. */
+		return -ENXIO;
+
+	if ( ! EISA_bus)
+		return -ENXIO;
+
+	for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
+		if (ac_probe1(ioaddr, dev) == 0)
+			return 0;
+		dev->irq = irq;
+		dev->mem_start = mem_start;
+	}
+
+	return -ENODEV;
+}
+
+static void cleanup_card(struct net_device *dev)
+{
+	/* Someday free_irq may be in ac_close_card() */
+	free_irq(dev->irq, dev);
+	release_region(dev->base_addr, AC_IO_EXTENT);
+	iounmap(ei_status.mem);
+}
+
+#ifndef MODULE
+struct net_device * __init ac3200_probe(int unit)
+{
+	struct net_device *dev = alloc_ei_netdev();
+	int err;
+
+	if (!dev)
+		return ERR_PTR(-ENOMEM);
+
+	sprintf(dev->name, "eth%d", unit);
+	netdev_boot_setup_check(dev);
+
+	err = do_ac3200_probe(dev);
+	if (err)
+		goto out;
+	err = register_netdev(dev);
+	if (err)
+		goto out1;
+	return dev;
+out1:
+	cleanup_card(dev);
+out:
+	free_netdev(dev);
+	return ERR_PTR(err);
+}
+#endif
+
+static int __init ac_probe1(int ioaddr, struct net_device *dev)
+{
+	int i, retval;
+
+	if (!request_region(ioaddr, AC_IO_EXTENT, DRV_NAME))
+		return -EBUSY;
+
+	if (inb_p(ioaddr + AC_ID_PORT) == 0xff) {
+		retval = -ENODEV;
+		goto out;
+	}
+
+	if (inl(ioaddr + AC_ID_PORT) != AC_EISA_ID) {
+		retval = -ENODEV;
+		goto out;
+	}
+
+#ifndef final_version
+	printk(KERN_DEBUG "AC3200 ethercard configuration register is %#02x,"
+		   " EISA ID %02x %02x %02x %02x.\n", inb(ioaddr + AC_CONFIG),
+		   inb(ioaddr + AC_ID_PORT + 0), inb(ioaddr + AC_ID_PORT + 1),
+		   inb(ioaddr + AC_ID_PORT + 2), inb(ioaddr + AC_ID_PORT + 3));
+#endif
+
+	printk("AC3200 in EISA slot %d, node", ioaddr/0x1000);
+	for(i = 0; i < 6; i++)
+		printk(" %02x", dev->dev_addr[i] = inb(ioaddr + AC_SA_PROM + i));
+
+#if 0
+	/* Check the vendor ID/prefix. Redundant after checking the EISA ID */
+	if (inb(ioaddr + AC_SA_PROM + 0) != AC_ADDR0
+		|| inb(ioaddr + AC_SA_PROM + 1) != AC_ADDR1
+		|| inb(ioaddr + AC_SA_PROM + 2) != AC_ADDR2 ) {
+		printk(", not found (invalid prefix).\n");
+		retval = -ENODEV;
+		goto out;
+	}
+#endif
+
+	/* Assign and allocate the interrupt now. */
+	if (dev->irq == 0) {
+		dev->irq = config2irq(inb(ioaddr + AC_CONFIG));
+		printk(", using");
+	} else {
+		dev->irq = irq_canonicalize(dev->irq);
+		printk(", assigning");
+	}
+
+	retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
+	if (retval) {
+		printk (" nothing! Unable to get IRQ %d.\n", dev->irq);
+		goto out1;
+	}
+
+	printk(" IRQ %d, %s port\n", dev->irq, port_name[dev->if_port]);
+
+	dev->base_addr = ioaddr;
+
+#ifdef notyet
+	if (dev->mem_start)	{		/* Override the value from the board. */
+		for (i = 0; i < 7; i++)
+			if (addrmap[i] == dev->mem_start)
+				break;
+		if (i >= 7)
+			i = 0;
+		outb((inb(ioaddr + AC_CONFIG) & ~7) | i, ioaddr + AC_CONFIG);
+	}
+#endif
+
+	dev->if_port = inb(ioaddr + AC_CONFIG) >> 6;
+	dev->mem_start = config2mem(inb(ioaddr + AC_CONFIG));
+
+	printk("%s: AC3200 at %#3x with %dkB memory at physical address %#lx.\n", 
+			dev->name, ioaddr, AC_STOP_PG/4, dev->mem_start);
+
+	/*
+	 *  BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
+	 *  the card mem within the region covered by `normal' RAM  !!!
+	 *
+	 *  ioremap() will fail in that case.
+	 */
+	ei_status.mem = ioremap(dev->mem_start, AC_STOP_PG*0x100);
+	if (!ei_status.mem) {
+		printk(KERN_ERR "ac3200.c: Unable to remap card memory above 1MB !!\n");
+		printk(KERN_ERR "ac3200.c: Try using EISA SCU to set memory below 1MB.\n");
+		printk(KERN_ERR "ac3200.c: Driver NOT installed.\n");
+		retval = -EINVAL;
+		goto out1;
+	}
+	printk("ac3200.c: remapped %dkB card memory to virtual address %p\n",
+			AC_STOP_PG/4, ei_status.mem);
+
+	dev->mem_start = (unsigned long)ei_status.mem;
+	dev->mem_end = dev->mem_start + (AC_STOP_PG - AC_START_PG)*256;
+
+	ei_status.name = "AC3200";
+	ei_status.tx_start_page = AC_START_PG;
+	ei_status.rx_start_page = AC_START_PG + TX_PAGES;
+	ei_status.stop_page = AC_STOP_PG;
+	ei_status.word16 = 1;
+
+	if (ei_debug > 0)
+		printk(version);
+
+	ei_status.reset_8390 = &ac_reset_8390;
+	ei_status.block_input = &ac_block_input;
+	ei_status.block_output = &ac_block_output;
+	ei_status.get_8390_hdr = &ac_get_8390_hdr;
+
+	dev->open = &ac_open;
+	dev->stop = &ac_close_card;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = ei_poll;
+#endif
+	NS8390_init(dev, 0);
+	return 0;
+out1:
+	free_irq(dev->irq, dev);
+out:
+	release_region(ioaddr, AC_IO_EXTENT);
+	return retval;
+}
+
+static int ac_open(struct net_device *dev)
+{
+#ifdef notyet
+	/* Someday we may enable the IRQ and shared memory here. */
+	int ioaddr = dev->base_addr;
+#endif
+
+	ei_open(dev);
+	return 0;
+}
+
+static void ac_reset_8390(struct net_device *dev)
+{
+	ushort ioaddr = dev->base_addr;
+
+	outb(AC_RESET, ioaddr + AC_RESET_PORT);
+	if (ei_debug > 1) printk("resetting AC3200, t=%ld...", jiffies);
+
+	ei_status.txing = 0;
+	outb(AC_ENABLE, ioaddr + AC_RESET_PORT);
+	if (ei_debug > 1) printk("reset done\n");
+
+	return;
+}
+
+/* Grab the 8390 specific header. Similar to the block_input routine, but
+   we don't need to be concerned with ring wrap as the header will be at
+   the start of a page, so we optimize accordingly. */
+
+static void
+ac_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+	void __iomem *hdr_start = ei_status.mem + ((ring_page - AC_START_PG)<<8);
+	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
+}
+
+/*  Block input and output are easy on shared memory ethercards, the only
+	complication is when the ring buffer wraps. */
+
+static void ac_block_input(struct net_device *dev, int count, struct sk_buff *skb,
+						  int ring_offset)
+{
+	void __iomem *start = ei_status.mem + ring_offset - AC_START_PG*256;
+
+	if (ring_offset + count > AC_STOP_PG*256) {
+		/* We must wrap the input move. */
+		int semi_count = AC_STOP_PG*256 - ring_offset;
+		memcpy_fromio(skb->data, start, semi_count);
+		count -= semi_count;
+		memcpy_fromio(skb->data + semi_count,
+				ei_status.mem + TX_PAGES*256, count);
+	} else {
+		/* Packet is in one chunk -- we can copy + cksum. */
+		eth_io_copy_and_sum(skb, start, count, 0);
+	}
+}
+
+static void ac_block_output(struct net_device *dev, int count,
+							const unsigned char *buf, int start_page)
+{
+	void __iomem *shmem = ei_status.mem + ((start_page - AC_START_PG)<<8);
+
+	memcpy_toio(shmem, buf, count);
+}
+
+static int ac_close_card(struct net_device *dev)
+{
+	if (ei_debug > 1)
+		printk("%s: Shutting down ethercard.\n", dev->name);
+
+#ifdef notyet
+	/* We should someday disable shared memory and interrupts. */
+	outb(0x00, ioaddr + 6);	/* Disable interrupts. */
+	free_irq(dev->irq, dev);
+#endif
+
+	ei_close(dev);
+	return 0;
+}
+
+#ifdef MODULE
+#define MAX_AC32_CARDS	4	/* Max number of AC32 cards per module */
+static struct net_device *dev_ac32[MAX_AC32_CARDS];
+static int io[MAX_AC32_CARDS];
+static int irq[MAX_AC32_CARDS];
+static int mem[MAX_AC32_CARDS];
+module_param_array(io, int, NULL, 0);
+module_param_array(irq, int, NULL, 0);
+module_param_array(mem, int, NULL, 0);
+MODULE_PARM_DESC(io, "I/O base address(es)");
+MODULE_PARM_DESC(irq, "IRQ number(s)");
+MODULE_PARM_DESC(mem, "Memory base address(es)");
+MODULE_DESCRIPTION("Ansel AC3200 EISA ethernet driver");
+MODULE_LICENSE("GPL");
+
+int
+init_module(void)
+{
+	struct net_device *dev;
+	int this_dev, found = 0;
+
+	for (this_dev = 0; this_dev < MAX_AC32_CARDS; this_dev++) {
+		if (io[this_dev] == 0 && this_dev != 0)
+			break;
+		dev = alloc_ei_netdev();
+		if (!dev)
+			break;
+		dev->irq = irq[this_dev];
+		dev->base_addr = io[this_dev];
+		dev->mem_start = mem[this_dev];		/* Currently ignored by driver */
+		if (do_ac3200_probe(dev) == 0) {
+			if (register_netdev(dev) == 0) {
+				dev_ac32[found++] = dev;
+				continue;
+			}
+			cleanup_card(dev);
+		}
+		free_netdev(dev);
+		printk(KERN_WARNING "ac3200.c: No ac3200 card found (i/o = 0x%x).\n", io[this_dev]);
+		break;
+	}
+	if (found)
+		return 0;
+	return -ENXIO;
+}
+
+void
+cleanup_module(void)
+{
+	int this_dev;
+
+	for (this_dev = 0; this_dev < MAX_AC32_CARDS; this_dev++) {
+		struct net_device *dev = dev_ac32[this_dev];
+		if (dev) {
+			unregister_netdev(dev);
+			cleanup_card(dev);
+			free_netdev(dev);
+		}
+	}
+}
+#endif /* MODULE */