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, 458 insertions, 0 deletions

diff --git a/drivers/net/lne390.c b/drivers/net/lne390.c
new file mode 100644
index 000000000000..179a97c0af69
--- /dev/null
+++ b/drivers/net/lne390.c
@@ -0,0 +1,458 @@
+/*
+        lne390.c
+
+        Linux driver for Mylex LNE390 EISA Network Adapter
+
+        Copyright (C) 1996-1998, Paul Gortmaker.
+
+        This software may be used and distributed according to the terms
+        of the GNU General Public License, incorporated herein by reference.
+
+        Information and Code Sources:
+
+        1) Based upon framework of es3210 driver.
+        2) The existing myriad of other Linux 8390 drivers by Donald Becker.
+        3) Russ Nelson's asm packet driver provided additional info.
+        4) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.
+
+        The LNE390 is an EISA shared memory NS8390 implementation. Note
+        that all memory copies to/from the board must be 32bit transfers.
+        There are two versions of the card: the lne390a and the lne390b.
+        Going by the EISA cfg files, the "a" has jumpers to select between
+        BNC/AUI, but the "b" also has RJ-45 and selection is via the SCU.
+        The shared memory address selection is also slightly different.
+        Note that shared memory address > 1MB are supported with this driver.
+
+        You can try <http://www.mylex.com> if you want more info, as I've
+        never even seen one of these cards.  :)
+
+        Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 2000/09/01
+        - get rid of check_region
+        - no need to check if dev == NULL in lne390_probe1
+*/
+
+static const char *version =
+        "lne390.c: Driver revision v0.99.1, 01/09/2000\n";
+
+#include <linux/module.h>
+#include <linux/eisa.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include "8390.h"
+
+#define DRV_NAME "lne390"
+
+static int lne390_probe1(struct net_device *dev, int ioaddr);
+
+static int lne390_open(struct net_device *dev);
+static int lne390_close(struct net_device *dev);
+
+static void lne390_reset_8390(struct net_device *dev);
+
+static void lne390_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
+static void lne390_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
+static void lne390_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page);
+
+#define LNE390_START_PG         0x00    /* First page of TX buffer      */
+#define LNE390_STOP_PG          0x80    /* Last page +1 of RX ring      */
+
+#define LNE390_ID_PORT          0xc80   /* Same for all EISA cards      */
+#define LNE390_IO_EXTENT        0x20
+#define LNE390_SA_PROM          0x16    /* Start of e'net addr.         */
+#define LNE390_RESET_PORT       0xc84   /* From the pkt driver source   */
+#define LNE390_NIC_OFFSET       0x00    /* Hello, the 8390 is *here*    */
+
+#define LNE390_ADDR0            0x00    /* 3 byte vendor prefix         */
+#define LNE390_ADDR1            0x80
+#define LNE390_ADDR2            0xe5
+
+#define LNE390_ID0      0x10009835      /* 0x3598 = 01101 01100 11000 = mlx */
+#define LNE390_ID1      0x11009835      /* above is the 390A, this is 390B  */
+
+#define LNE390_CFG1             0xc84   /* NB: 0xc84 is also "reset" port. */
+#define LNE390_CFG2             0xc90
+
+/*
+ *      You can OR any of the following bits together and assign it
+ *      to LNE390_DEBUG to get verbose driver info during operation.
+ *      Currently only the probe one is implemented.
+ */
+
+#define LNE390_D_PROBE  0x01
+#define LNE390_D_RX_PKT 0x02
+#define LNE390_D_TX_PKT 0x04
+#define LNE390_D_IRQ    0x08
+
+#define LNE390_DEBUG    0
+
+static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
+static unsigned int shmem_mapA[] __initdata = {0xff, 0xfe, 0xfd, 0xfff, 0xffe, 0xffc, 0x0d, 0x0};
+static unsigned int shmem_mapB[] __initdata = {0xff, 0xfe, 0x0e, 0xfff, 0xffe, 0xffc, 0x0d, 0x0};
+
+/*
+ *      Probe for the card. The best way is to read the EISA ID if it
+ *      is known. Then we can check the prefix of the station address
+ *      PROM for a match against the value assigned to Mylex.
+ */
+
+static int __init do_lne390_probe(struct net_device *dev)
+{
+        unsigned short ioaddr = dev->base_addr;
+        int irq = dev->irq;
+        int mem_start = dev->mem_start;
+        int ret;
+
+        SET_MODULE_OWNER(dev);
+
+        if (ioaddr > 0x1ff) {           /* Check a single specified location. */
+                if (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME))
+                        return -EBUSY;
+                ret = lne390_probe1(dev, ioaddr);
+                if (ret)
+                        release_region(ioaddr, LNE390_IO_EXTENT);
+                return ret;
+        }
+        else if (ioaddr > 0)            /* Don't probe at all. */
+                return -ENXIO;
+
+        if (!EISA_bus) {
+#if LNE390_DEBUG & LNE390_D_PROBE
+                printk("lne390-debug: Not an EISA bus. Not probing high ports.\n");
+#endif
+                return -ENXIO;
+        }
+
+        /* EISA spec allows for up to 16 slots, but 8 is typical. */
+        for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
+                if (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME))
+                        continue;
+                if (lne390_probe1(dev, ioaddr) == 0)
+                        return 0;
+                release_region(ioaddr, LNE390_IO_EXTENT);
+                dev->irq = irq;
+                dev->mem_start = mem_start;
+        }
+
+        return -ENODEV;
+}
+
+static void cleanup_card(struct net_device *dev)
+{
+        free_irq(dev->irq, dev);
+        release_region(dev->base_addr, LNE390_IO_EXTENT);
+        iounmap(ei_status.mem);
+}
+
+#ifndef MODULE
+struct net_device * __init lne390_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_lne390_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 lne390_probe1(struct net_device *dev, int ioaddr)
+{
+        int i, revision, ret;
+        unsigned long eisa_id;
+
+        if (inb_p(ioaddr + LNE390_ID_PORT) == 0xff) return -ENODEV;
+
+#if LNE390_DEBUG & LNE390_D_PROBE
+        printk("lne390-debug: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + LNE390_ID_PORT));
+        printk("lne390-debug: config regs: %#x %#x\n",
+                inb(ioaddr + LNE390_CFG1), inb(ioaddr + LNE390_CFG2));
+#endif
+
+
+/*      Check the EISA ID of the card. */
+        eisa_id = inl(ioaddr + LNE390_ID_PORT);
+        if ((eisa_id != LNE390_ID0) && (eisa_id != LNE390_ID1)) {
+                return -ENODEV;
+        }
+
+        revision = (eisa_id >> 24) & 0x01;      /* 0 = rev A, 1 rev B */
+        
+#if 0
+/*      Check the Mylex vendor ID as well. Not really required. */
+        if (inb(ioaddr + LNE390_SA_PROM + 0) != LNE390_ADDR0
+                || inb(ioaddr + LNE390_SA_PROM + 1) != LNE390_ADDR1
+                || inb(ioaddr + LNE390_SA_PROM + 2) != LNE390_ADDR2 ) {
+                printk("lne390.c: card not found");
+                for(i = 0; i < ETHER_ADDR_LEN; i++)
+                        printk(" %02x", inb(ioaddr + LNE390_SA_PROM + i));
+                printk(" (invalid prefix).\n");
+                return -ENODEV;
+        }
+#endif
+
+        printk("lne390.c: LNE390%X in EISA slot %d, address", 0xa+revision, ioaddr/0x1000);
+        for(i = 0; i < ETHER_ADDR_LEN; i++)
+                printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + LNE390_SA_PROM + i)));
+        printk(".\nlne390.c: ");
+
+        /* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
+        if (dev->irq == 0) {
+                unsigned char irq_reg = inb(ioaddr + LNE390_CFG2) >> 3;
+                dev->irq = irq_map[irq_reg & 0x07];
+                printk("using");
+        } else {
+                /* This is useless unless we reprogram the card here too */
+                if (dev->irq == 2) dev->irq = 9;        /* Doh! */
+                printk("assigning");
+        }
+        printk(" IRQ %d,", dev->irq);
+
+        if ((ret = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev))) {
+                printk (" unable to get IRQ %d.\n", dev->irq);
+                return ret;
+        }
+
+        if (dev->mem_start == 0) {
+                unsigned char mem_reg = inb(ioaddr + LNE390_CFG2) & 0x07;
+
+                if (revision)   /* LNE390B */
+                        dev->mem_start = shmem_mapB[mem_reg] * 0x10000;
+                else            /* LNE390A */
+                        dev->mem_start = shmem_mapA[mem_reg] * 0x10000;
+                printk(" using ");
+        } else {
+                /* Should check for value in shmem_map and reprogram the card to use it */
+                dev->mem_start &= 0xfff0000;
+                printk(" assigning ");
+        }
+
+        printk("%dkB memory at physical address %#lx\n",
+                        LNE390_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, LNE390_STOP_PG*0x100);
+        if (!ei_status.mem) {
+                printk(KERN_ERR "lne390.c: Unable to remap card memory above 1MB !!\n");
+                printk(KERN_ERR "lne390.c: Try using EISA SCU to set memory below 1MB.\n");
+                printk(KERN_ERR "lne390.c: Driver NOT installed.\n");
+                ret = -EAGAIN;
+                goto cleanup;
+        }
+        printk("lne390.c: remapped %dkB card memory to virtual address %p\n",
+                        LNE390_STOP_PG/4, ei_status.mem);
+
+        dev->mem_start = (unsigned long)ei_status.mem;
+        dev->mem_end = dev->mem_start + (LNE390_STOP_PG - LNE390_START_PG)*256;
+
+        /* The 8390 offset is zero for the LNE390 */
+        dev->base_addr = ioaddr;
+
+        ei_status.name = "LNE390";
+        ei_status.tx_start_page = LNE390_START_PG;
+        ei_status.rx_start_page = LNE390_START_PG + TX_PAGES;
+        ei_status.stop_page = LNE390_STOP_PG;
+        ei_status.word16 = 1;
+
+        if (ei_debug > 0)
+                printk(version);
+
+        ei_status.reset_8390 = &lne390_reset_8390;
+        ei_status.block_input = &lne390_block_input;
+        ei_status.block_output = &lne390_block_output;
+        ei_status.get_8390_hdr = &lne390_get_8390_hdr;
+
+        dev->open = &lne390_open;
+        dev->stop = &lne390_close;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+        dev->poll_controller = ei_poll;
+#endif
+        NS8390_init(dev, 0);
+        return 0;
+cleanup:
+        free_irq(dev->irq, dev);
+        return ret;
+}
+
+/*
+ *      Reset as per the packet driver method. Judging by the EISA cfg
+ *      file, this just toggles the "Board Enable" bits (bit 2 and 0).
+ */
+
+static void lne390_reset_8390(struct net_device *dev)
+{
+        unsigned short ioaddr = dev->base_addr;
+
+        outb(0x04, ioaddr + LNE390_RESET_PORT);
+        if (ei_debug > 1) printk("%s: resetting the LNE390...", dev->name);
+
+        mdelay(2);
+
+        ei_status.txing = 0;
+        outb(0x01, ioaddr + LNE390_RESET_PORT);
+        if (ei_debug > 1) printk("reset done\n");
+
+        return;
+}
+
+/*
+ *      Note: In the following three functions is the implicit assumption
+ *      that the associated memcpy will only use "rep; movsl" as long as
+ *      we keep the counts as some multiple of doublewords. This is a
+ *      requirement of the hardware, and also prevents us from using
+ *      eth_io_copy_and_sum() since we can't guarantee it will limit
+ *      itself to doubleword access.
+ */
+
+/*
+ *      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. (A single doubleword.)
+ */
+
+static void
+lne390_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+        void __iomem *hdr_start = ei_status.mem + ((ring_page - LNE390_START_PG)<<8);
+        memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
+        hdr->count = (hdr->count + 3) & ~3;     /* Round up allocation. */
+}
+
+/*      
+ *      Block input and output are easy on shared memory ethercards, the only
+ *      complication is when the ring buffer wraps. The count will already
+ *      be rounded up to a doubleword value via lne390_get_8390_hdr() above.
+ */
+
+static void lne390_block_input(struct net_device *dev, int count, struct sk_buff *skb,
+                                                  int ring_offset)
+{
+        void __iomem *xfer_start = ei_status.mem + ring_offset - (LNE390_START_PG<<8);
+
+        if (ring_offset + count > (LNE390_STOP_PG<<8)) {
+                /* Packet wraps over end of ring buffer. */
+                int semi_count = (LNE390_STOP_PG<<8) - ring_offset;
+                memcpy_fromio(skb->data, xfer_start, semi_count);
+                count -= semi_count;
+                memcpy_fromio(skb->data + semi_count,
+                        ei_status.mem + (TX_PAGES<<8), count);
+        } else {
+                /* Packet is in one chunk. */
+                memcpy_fromio(skb->data, xfer_start, count);
+        }
+}
+
+static void lne390_block_output(struct net_device *dev, int count,
+                                const unsigned char *buf, int start_page)
+{
+        void __iomem *shmem = ei_status.mem + ((start_page - LNE390_START_PG)<<8);
+
+        count = (count + 3) & ~3;     /* Round up to doubleword */
+        memcpy_toio(shmem, buf, count);
+}
+
+static int lne390_open(struct net_device *dev)
+{
+        ei_open(dev);
+        return 0;
+}
+
+static int lne390_close(struct net_device *dev)
+{
+
+        if (ei_debug > 1)
+                printk("%s: Shutting down ethercard.\n", dev->name);
+
+        ei_close(dev);
+        return 0;
+}
+
+#ifdef MODULE
+#define MAX_LNE_CARDS   4       /* Max number of LNE390 cards per module */
+static struct net_device *dev_lne[MAX_LNE_CARDS];
+static int io[MAX_LNE_CARDS];
+static int irq[MAX_LNE_CARDS];
+static int mem[MAX_LNE_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("Mylex LNE390A/B 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_LNE_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];
+                if (do_lne390_probe(dev) == 0) {
+                        if (register_netdev(dev) == 0) {
+                                dev_lne[found++] = dev;
+                                continue;
+                        }
+                        cleanup_card(dev);
+                }
+                free_netdev(dev);
+                printk(KERN_WARNING "lne390.c: No LNE390 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_LNE_CARDS; this_dev++) {
+                struct net_device *dev = dev_lne[this_dev];
+                if (dev) {
+                        unregister_netdev(dev);
+                        cleanup_card(dev);
+                        free_netdev(dev);
+                }
+        }
+}
+#endif /* MODULE */
+