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, 464 insertions, 0 deletions

diff --git a/drivers/net/hp.c b/drivers/net/hp.c
new file mode 100644
index 000000000000..026888611d6f
--- /dev/null
+++ b/drivers/net/hp.c
@@ -0,0 +1,464 @@
+/* hp.c: A HP LAN ethernet driver for linux. */
+/*
+        Written 1993-94 by Donald Becker.
+
+        Copyright 1993 United States Government as represented by the
+        Director, National Security Agency.
+
+        This software may be used and distributed according to the terms
+        of the GNU General Public License, 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 a driver for the HP PC-LAN adaptors.
+
+        Sources:
+          The Crynwr packet driver.
+*/
+
+static const char version[] =
+        "hp.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
+
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include "8390.h"
+
+#define DRV_NAME "hp"
+
+/* A zero-terminated list of I/O addresses to be probed. */
+static unsigned int hppclan_portlist[] __initdata =
+{ 0x300, 0x320, 0x340, 0x280, 0x2C0, 0x200, 0x240, 0};
+
+#define HP_IO_EXTENT    32
+
+#define HP_DATAPORT             0x0c    /* "Remote DMA" data port. */
+#define HP_ID                   0x07
+#define HP_CONFIGURE    0x08    /* Configuration register. */
+#define  HP_RUN                 0x01    /* 1 == Run, 0 == reset. */
+#define  HP_IRQ                 0x0E    /* Mask for software-configured IRQ line. */
+#define  HP_DATAON              0x10    /* Turn on dataport */
+#define NIC_OFFSET              0x10    /* Offset the 8390 registers. */
+
+#define HP_START_PG             0x00    /* First page of TX buffer */
+#define HP_8BSTOP_PG    0x80    /* Last page +1 of RX ring */
+#define HP_16BSTOP_PG   0xFF    /* Same, for 16 bit cards. */
+
+static int hp_probe1(struct net_device *dev, int ioaddr);
+
+static int hp_open(struct net_device *dev);
+static int hp_close(struct net_device *dev);
+static void hp_reset_8390(struct net_device *dev);
+static void hp_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
+                                        int ring_page);
+static void hp_block_input(struct net_device *dev, int count,
+                                        struct sk_buff *skb , int ring_offset);
+static void hp_block_output(struct net_device *dev, int count,
+                                                        const unsigned char *buf, int start_page);
+
+static void hp_init_card(struct net_device *dev);
+
+/* The map from IRQ number to HP_CONFIGURE register setting. */
+/* My default is IRQ5                0  1  2  3  4  5  6  7  8  9 10 11 */
+static char irqmap[16] __initdata= { 0, 0, 4, 6, 8,10, 0,14, 0, 4, 2,12,0,0,0,0};
+
+
+/*      Probe for an HP LAN adaptor.
+        Also initialize the card and fill in STATION_ADDR with the station
+        address. */
+
+static int __init do_hp_probe(struct net_device *dev)
+{
+        int i;
+        int base_addr = dev->base_addr;
+        int irq = dev->irq;
+
+        SET_MODULE_OWNER(dev);
+
+        if (base_addr > 0x1ff)          /* Check a single specified location. */
+                return hp_probe1(dev, base_addr);
+        else if (base_addr != 0)        /* Don't probe at all. */
+                return -ENXIO;
+
+        for (i = 0; hppclan_portlist[i]; i++) {
+                if (hp_probe1(dev, hppclan_portlist[i]) == 0)
+                        return 0;
+                dev->irq = irq;
+        }
+
+        return -ENODEV;
+}
+
+static void cleanup_card(struct net_device *dev)
+{
+        free_irq(dev->irq, dev);
+        release_region(dev->base_addr - NIC_OFFSET, HP_IO_EXTENT);
+}
+
+#ifndef MODULE
+struct net_device * __init hp_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_hp_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 hp_probe1(struct net_device *dev, int ioaddr)
+{
+        int i, retval, board_id, wordmode;
+        const char *name;
+        static unsigned version_printed;
+
+        if (!request_region(ioaddr, HP_IO_EXTENT, DRV_NAME))
+                return -EBUSY;
+
+        /* Check for the HP physical address, 08 00 09 xx xx xx. */
+        /* This really isn't good enough: we may pick up HP LANCE boards
+           also!  Avoid the lance 0x5757 signature. */
+        if (inb(ioaddr) != 0x08
+                || inb(ioaddr+1) != 0x00
+                || inb(ioaddr+2) != 0x09
+                || inb(ioaddr+14) == 0x57) {
+                retval = -ENODEV;
+                goto out;
+        }
+
+        /* Set up the parameters based on the board ID.
+           If you have additional mappings, please mail them to me -djb. */
+        if ((board_id = inb(ioaddr + HP_ID)) & 0x80) {
+                name = "HP27247";
+                wordmode = 1;
+        } else {
+                name = "HP27250";
+                wordmode = 0;
+        }
+
+        if (ei_debug  &&  version_printed++ == 0)
+                printk(version);
+
+        printk("%s: %s (ID %02x) at %#3x,", dev->name, name, board_id, ioaddr);
+
+        for(i = 0; i < ETHER_ADDR_LEN; i++)
+                printk(" %2.2x", dev->dev_addr[i] = inb(ioaddr + i));
+
+        /* Snarf the interrupt now.  Someday this could be moved to open(). */
+        if (dev->irq < 2) {
+                int irq_16list[] = { 11, 10, 5, 3, 4, 7, 9, 0};
+                int irq_8list[] = { 7, 5, 3, 4, 9, 0};
+                int *irqp = wordmode ? irq_16list : irq_8list;
+                do {
+                        int irq = *irqp;
+                        if (request_irq (irq, NULL, 0, "bogus", NULL) != -EBUSY) {
+                                unsigned long cookie = probe_irq_on();
+                                /* Twinkle the interrupt, and check if it's seen. */
+                                outb_p(irqmap[irq] | HP_RUN, ioaddr + HP_CONFIGURE);
+                                outb_p( 0x00 | HP_RUN, ioaddr + HP_CONFIGURE);
+                                if (irq == probe_irq_off(cookie)                 /* It's a good IRQ line! */
+                                        && request_irq (irq, ei_interrupt, 0, DRV_NAME, dev) == 0) {
+                                        printk(" selecting IRQ %d.\n", irq);
+                                        dev->irq = *irqp;
+                                        break;
+                                }
+                        }
+                } while (*++irqp);
+                if (*irqp == 0) {
+                        printk(" no free IRQ lines.\n");
+                        retval = -EBUSY;
+                        goto out;
+                }
+        } else {
+                if (dev->irq == 2)
+                        dev->irq = 9;
+                if ((retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev))) {
+                        printk (" unable to get IRQ %d.\n", dev->irq);
+                        goto out;
+                }
+        }
+
+        /* Set the base address to point to the NIC, not the "real" base! */
+        dev->base_addr = ioaddr + NIC_OFFSET;
+        dev->open = &hp_open;
+        dev->stop = &hp_close;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+        dev->poll_controller = ei_poll;
+#endif
+
+        ei_status.name = name;
+        ei_status.word16 = wordmode;
+        ei_status.tx_start_page = HP_START_PG;
+        ei_status.rx_start_page = HP_START_PG + TX_PAGES;
+        ei_status.stop_page = wordmode ? HP_16BSTOP_PG : HP_8BSTOP_PG;
+
+        ei_status.reset_8390 = &hp_reset_8390;
+        ei_status.get_8390_hdr = &hp_get_8390_hdr;
+        ei_status.block_input = &hp_block_input;
+        ei_status.block_output = &hp_block_output;
+        hp_init_card(dev);
+
+        return 0;
+out:
+        release_region(ioaddr, HP_IO_EXTENT);
+        return retval;
+}
+
+static int
+hp_open(struct net_device *dev)
+{
+        ei_open(dev);
+        return 0;
+}
+
+static int
+hp_close(struct net_device *dev)
+{
+        ei_close(dev);
+        return 0;
+}
+
+static void
+hp_reset_8390(struct net_device *dev)
+{
+        int hp_base = dev->base_addr - NIC_OFFSET;
+        int saved_config = inb_p(hp_base + HP_CONFIGURE);
+
+        if (ei_debug > 1) printk("resetting the 8390 time=%ld...", jiffies);
+        outb_p(0x00, hp_base + HP_CONFIGURE);
+        ei_status.txing = 0;
+        /* Pause just a few cycles for the hardware reset to take place. */
+        udelay(5);
+
+        outb_p(saved_config, hp_base + HP_CONFIGURE);
+        udelay(5);
+
+        if ((inb_p(hp_base+NIC_OFFSET+EN0_ISR) & ENISR_RESET) == 0)
+                printk("%s: hp_reset_8390() did not complete.\n", dev->name);
+
+        if (ei_debug > 1) printk("8390 reset done (%ld).", jiffies);
+        return;
+}
+
+static void
+hp_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+        int nic_base = dev->base_addr;
+        int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
+
+        outb_p(saved_config | HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
+        outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base);
+        outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
+        outb_p(0, nic_base + EN0_RCNTHI);
+        outb_p(0, nic_base + EN0_RSARLO);       /* On page boundary */
+        outb_p(ring_page, nic_base + EN0_RSARHI);
+        outb_p(E8390_RREAD+E8390_START, nic_base);
+
+        if (ei_status.word16)
+          insw(nic_base - NIC_OFFSET + HP_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
+        else
+          insb(nic_base - NIC_OFFSET + HP_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
+
+        outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
+}
+
+/* Block input and output, similar to the Crynwr packet driver. If you are
+   porting to a new ethercard look at the packet driver source for hints.
+   The HP LAN doesn't use shared memory -- we put the packet
+   out through the "remote DMA" dataport. */
+
+static void
+hp_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
+{
+        int nic_base = dev->base_addr;
+        int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
+        int xfer_count = count;
+        char *buf = skb->data;
+
+        outb_p(saved_config | HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
+        outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base);
+        outb_p(count & 0xff, nic_base + EN0_RCNTLO);
+        outb_p(count >> 8, nic_base + EN0_RCNTHI);
+        outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
+        outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
+        outb_p(E8390_RREAD+E8390_START, nic_base);
+        if (ei_status.word16) {
+          insw(nic_base - NIC_OFFSET + HP_DATAPORT,buf,count>>1);
+          if (count & 0x01)
+                buf[count-1] = inb(nic_base - NIC_OFFSET + HP_DATAPORT), xfer_count++;
+        } else {
+                insb(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count);
+        }
+        /* This is for the ALPHA version only, remove for later releases. */
+        if (ei_debug > 0) {                     /* DMA termination address check... */
+          int high = inb_p(nic_base + EN0_RSARHI);
+          int low = inb_p(nic_base + EN0_RSARLO);
+          int addr = (high << 8) + low;
+          /* Check only the lower 8 bits so we can ignore ring wrap. */
+          if (((ring_offset + xfer_count) & 0xff) != (addr & 0xff))
+                printk("%s: RX transfer address mismatch, %#4.4x vs. %#4.4x (actual).\n",
+                           dev->name, ring_offset + xfer_count, addr);
+        }
+        outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
+}
+
+static void
+hp_block_output(struct net_device *dev, int count,
+                                const unsigned char *buf, int start_page)
+{
+        int nic_base = dev->base_addr;
+        int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
+
+        outb_p(saved_config | HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
+        /* Round the count up for word writes.  Do we need to do this?
+           What effect will an odd byte count have on the 8390?
+           I should check someday. */
+        if (ei_status.word16 && (count & 0x01))
+          count++;
+        /* We should already be in page 0, but to be safe... */
+        outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base);
+
+#ifdef NE8390_RW_BUGFIX
+        /* Handle the read-before-write bug the same way as the
+           Crynwr packet driver -- the NatSemi method doesn't work. */
+        outb_p(0x42, nic_base + EN0_RCNTLO);
+        outb_p(0,       nic_base + EN0_RCNTHI);
+        outb_p(0xff, nic_base + EN0_RSARLO);
+        outb_p(0x00, nic_base + EN0_RSARHI);
+#define NE_CMD          0x00
+        outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+        /* Make certain that the dummy read has occurred. */
+        inb_p(0x61);
+        inb_p(0x61);
+#endif
+
+        outb_p(count & 0xff, nic_base + EN0_RCNTLO);
+        outb_p(count >> 8,       nic_base + EN0_RCNTHI);
+        outb_p(0x00, nic_base + EN0_RSARLO);
+        outb_p(start_page, nic_base + EN0_RSARHI);
+
+        outb_p(E8390_RWRITE+E8390_START, nic_base);
+        if (ei_status.word16) {
+                /* Use the 'rep' sequence for 16 bit boards. */
+                outsw(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count>>1);
+        } else {
+                outsb(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count);
+        }
+
+        /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here -- it's broken! */
+
+        /* This is for the ALPHA version only, remove for later releases. */
+        if (ei_debug > 0) {                     /* DMA termination address check... */
+          int high = inb_p(nic_base + EN0_RSARHI);
+          int low  = inb_p(nic_base + EN0_RSARLO);
+          int addr = (high << 8) + low;
+          if ((start_page << 8) + count != addr)
+                printk("%s: TX Transfer address mismatch, %#4.4x vs. %#4.4x.\n",
+                           dev->name, (start_page << 8) + count, addr);
+        }
+        outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
+        return;
+}
+
+/* This function resets the ethercard if something screws up. */
+static void
+hp_init_card(struct net_device *dev)
+{
+        int irq = dev->irq;
+        NS8390_init(dev, 0);
+        outb_p(irqmap[irq&0x0f] | HP_RUN,
+                   dev->base_addr - NIC_OFFSET + HP_CONFIGURE);
+        return;
+}
+
+#ifdef MODULE
+#define MAX_HP_CARDS    4       /* Max number of HP cards per module */
+static struct net_device *dev_hp[MAX_HP_CARDS];
+static int io[MAX_HP_CARDS];
+static int irq[MAX_HP_CARDS];
+
+module_param_array(io, int, NULL, 0);
+module_param_array(irq, int, NULL, 0);
+MODULE_PARM_DESC(io, "I/O base address(es)");
+MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
+MODULE_DESCRIPTION("HP PC-LAN ISA ethernet driver");
+MODULE_LICENSE("GPL");
+
+/* This is set up so that only a single autoprobe takes place per call.
+ISA device autoprobes on a running machine are not recommended. */
+int
+init_module(void)
+{
+        struct net_device *dev;
+        int this_dev, found = 0;
+
+        for (this_dev = 0; this_dev < MAX_HP_CARDS; this_dev++) {
+                if (io[this_dev] == 0)  {
+                        if (this_dev != 0) break; /* only autoprobe 1st one */
+                        printk(KERN_NOTICE "hp.c: Presently autoprobing (not recommended) for a single card.\n");
+                }
+                dev = alloc_ei_netdev();
+                if (!dev)
+                        break;
+                dev->irq = irq[this_dev];
+                dev->base_addr = io[this_dev];
+                if (do_hp_probe(dev) == 0) {
+                        if (register_netdev(dev) == 0) {
+                                dev_hp[found++] = dev;
+                                continue;
+                        }
+                        cleanup_card(dev);
+                }
+                free_netdev(dev);
+                printk(KERN_WARNING "hp.c: No HP 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_HP_CARDS; this_dev++) {
+                struct net_device *dev = dev_hp[this_dev];
+                if (dev) {
+                        unregister_netdev(dev);
+                        cleanup_card(dev);
+                        free_netdev(dev);
+                }
+        }
+}
+#endif /* MODULE */