Linux-2.6.12-rc2v2.6.12-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 */