1 files changed, 446 insertions, 0 deletions

diff --git a/drivers/net/ethernet/8390/es3210.c b/drivers/net/ethernet/8390/es3210.c
new file mode 100644
index 000000000000..7a09575ecff0
--- /dev/null
+++ b/drivers/net/ethernet/8390/es3210.c
@@ -0,0 +1,446 @@
+/*
+        es3210.c
+
+        Linux driver for Racal-Interlan ES3210 EISA Network Adapter
+
+        Copyright (C) 1996, 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) The existing myriad of Linux 8390 drivers written by Donald Becker.
+
+        2) Once again Russ Nelson's asm packet driver provided additional info.
+
+        3) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.
+           Too bad it doesn't work -- see below.
+
+        The ES3210 is an EISA shared memory NS8390 implementation. Note
+        that all memory copies to/from the board must be 32bit transfers.
+        Which rules out using eth_io_copy_and_sum() in this driver.
+
+        Apparently there are two slightly different revisions of the
+        card, since there are two distinct EISA cfg files (!rii0101.cfg
+        and !rii0102.cfg) One has media select in the cfg file and the
+        other doesn't. Hopefully this will work with either.
+
+        That is about all I can tell you about it, having never actually
+        even seen one of these cards. :)  Try http://www.interlan.com
+        if you want more info.
+
+        Thanks go to Mark Salazar for testing v0.02 of this driver.
+
+        Bugs, to-fix, etc:
+
+        1) The EISA cfg ports that are *supposed* to have the IRQ and shared
+           mem values just read 0xff all the time. Hrrmpf. Apparently the
+           same happens with the packet driver as the code for reading
+           these registers is disabled there. In the meantime, boot with:
+           ether=<IRQ>,0,0x<shared_mem_addr>,eth0 to override the IRQ and
+           shared memory detection. (The i/o port detection is okay.)
+
+        2) Module support currently untested. Probably works though.
+
+*/
+
+static const char version[] =
+        "es3210.c: Driver revision v0.03, 14/09/96\n";
+
+#include <linux/module.h>
+#include <linux/eisa.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include "8390.h"
+
+static int es_probe1(struct net_device *dev, int ioaddr);
+
+static void es_reset_8390(struct net_device *dev);
+
+static void es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
+static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
+static void es_block_output(struct net_device *dev, int count, const unsigned char *buf, int start_page);
+
+#define ES_START_PG     0x00    /* First page of TX buffer              */
+#define ES_STOP_PG      0x40    /* Last page +1 of RX ring              */
+
+#define ES_IO_EXTENT    0x37    /* The cfg file says 0xc90 -> 0xcc7     */
+#define ES_ID_PORT      0xc80   /* Same for all EISA cards              */
+#define ES_SA_PROM      0xc90   /* Start of e'net addr.                 */
+#define ES_RESET_PORT   0xc84   /* From the packet driver source        */
+#define ES_NIC_OFFSET   0xca0   /* Hello, the 8390 is *here*            */
+
+#define ES_ADDR0        0x02    /* 3 byte vendor prefix                 */
+#define ES_ADDR1        0x07
+#define ES_ADDR2        0x01
+
+/*
+ * Two card revisions. EISA ID's are always rev. minor, rev. major,, and
+ * then the three vendor letters stored in 5 bits each, with an "a" = 1.
+ * For eg: "rii" = 10010 01001 01001 = 0x4929, which is how the EISA
+ * config utility determines automagically what config file(s) to use.
+ */
+#define ES_EISA_ID1     0x01012949      /* !rii0101.cfg                 */
+#define ES_EISA_ID2     0x02012949      /* !rii0102.cfg                 */
+
+#define ES_CFG1         0xcc0   /* IOPORT(1) --> IOPORT(6) in cfg file  */
+#define ES_CFG2         0xcc1
+#define ES_CFG3         0xcc2
+#define ES_CFG4         0xcc3
+#define ES_CFG5         0xcc4
+#define ES_CFG6         0xc84   /* NB: 0xc84 is also "reset" port.      */
+
+/*
+ *      You can OR any of the following bits together and assign it
+ *      to ES_DEBUG to get verbose driver info during operation.
+ *      Some of these don't do anything yet.
+ */
+
+#define ES_D_PROBE      0x01
+#define ES_D_RX_PKT     0x02
+#define ES_D_TX_PKT     0x04
+#define ED_D_IRQ        0x08
+
+#define ES_DEBUG        0
+
+static unsigned char lo_irq_map[] __initdata = {3, 4, 5, 6, 7, 9, 10};
+static unsigned char hi_irq_map[] __initdata = {11, 12, 0, 14, 0, 0, 0, 15};
+
+/*
+ *      Probe for the card. The best way is to read the EISA ID if it
+ *      is known. Then we check the prefix of the station address
+ *      PROM for a match against the Racal-Interlan assigned value.
+ */
+
+static int __init do_es_probe(struct net_device *dev)
+{
+        unsigned short ioaddr = dev->base_addr;
+        int irq = dev->irq;
+        int mem_start = dev->mem_start;
+
+        if (ioaddr > 0x1ff)             /* Check a single specified location. */
+                return es_probe1(dev, ioaddr);
+        else if (ioaddr > 0)            /* Don't probe at all. */
+                return -ENXIO;
+
+        if (!EISA_bus) {
+#if ES_DEBUG & ES_D_PROBE
+                printk("es3210.c: Not 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 (es_probe1(dev, ioaddr) == 0)
+                        return 0;
+                dev->irq = irq;
+                dev->mem_start = mem_start;
+        }
+
+        return -ENODEV;
+}
+
+#ifndef MODULE
+struct net_device * __init es_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_es_probe(dev);
+        if (err)
+                goto out;
+        return dev;
+out:
+        free_netdev(dev);
+        return ERR_PTR(err);
+}
+#endif
+
+static int __init es_probe1(struct net_device *dev, int ioaddr)
+{
+        int i, retval;
+        unsigned long eisa_id;
+
+        if (!request_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT, "es3210"))
+                return -ENODEV;
+
+#if ES_DEBUG & ES_D_PROBE
+        printk("es3210.c: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + ES_ID_PORT));
+        printk("es3210.c: config regs: %#x %#x %#x %#x %#x %#x\n",
+                inb(ioaddr + ES_CFG1), inb(ioaddr + ES_CFG2), inb(ioaddr + ES_CFG3),
+                inb(ioaddr + ES_CFG4), inb(ioaddr + ES_CFG5), inb(ioaddr + ES_CFG6));
+#endif
+
+/*      Check the EISA ID of the card. */
+        eisa_id = inl(ioaddr + ES_ID_PORT);
+        if ((eisa_id != ES_EISA_ID1) && (eisa_id != ES_EISA_ID2)) {
+                retval = -ENODEV;
+                goto out;
+        }
+
+        for (i = 0; i < ETHER_ADDR_LEN ; i++)
+                dev->dev_addr[i] = inb(ioaddr + ES_SA_PROM + i);
+
+/*      Check the Racal vendor ID as well. */
+        if (dev->dev_addr[0] != ES_ADDR0 ||
+            dev->dev_addr[1] != ES_ADDR1 ||
+            dev->dev_addr[2] != ES_ADDR2) {
+                printk("es3210.c: card not found %pM (invalid_prefix).\n",
+                       dev->dev_addr);
+                retval = -ENODEV;
+                goto out;
+        }
+
+        printk("es3210.c: ES3210 rev. %ld at %#x, node %pM",
+               eisa_id>>24, ioaddr, dev->dev_addr);
+
+        /* Snarf the interrupt now. */
+        if (dev->irq == 0) {
+                unsigned char hi_irq = inb(ioaddr + ES_CFG2) & 0x07;
+                unsigned char lo_irq = inb(ioaddr + ES_CFG1) & 0xfe;
+
+                if (hi_irq != 0) {
+                        dev->irq = hi_irq_map[hi_irq - 1];
+                } else {
+                        int i = 0;
+                        while (lo_irq > (1<<i)) i++;
+                        dev->irq = lo_irq_map[i];
+                }
+                printk(" using IRQ %d", dev->irq);
+#if ES_DEBUG & ES_D_PROBE
+                printk("es3210.c: hi_irq %#x, lo_irq %#x, dev->irq = %d\n",
+                                        hi_irq, lo_irq, dev->irq);
+#endif
+        } else {
+                if (dev->irq == 2)
+                        dev->irq = 9;                   /* Doh! */
+                printk(" assigning IRQ %d", dev->irq);
+        }
+
+        if (request_irq(dev->irq, ei_interrupt, 0, "es3210", dev)) {
+                printk (" unable to get IRQ %d.\n", dev->irq);
+                retval = -EAGAIN;
+                goto out;
+        }
+
+        if (dev->mem_start == 0) {
+                unsigned char mem_enabled = inb(ioaddr + ES_CFG2) & 0xc0;
+                unsigned char mem_bits = inb(ioaddr + ES_CFG3) & 0x07;
+
+                if (mem_enabled != 0x80) {
+                        printk(" shared mem disabled - giving up\n");
+                        retval = -ENXIO;
+                        goto out1;
+                }
+                dev->mem_start = 0xC0000 + mem_bits*0x4000;
+                printk(" using ");
+        } else {
+                printk(" assigning ");
+        }
+
+        ei_status.mem = ioremap(dev->mem_start, (ES_STOP_PG - ES_START_PG)*256);
+        if (!ei_status.mem) {
+                printk("ioremap failed - giving up\n");
+                retval = -ENXIO;
+                goto out1;
+        }
+
+        dev->mem_end = dev->mem_start + (ES_STOP_PG - ES_START_PG)*256;
+
+        printk("mem %#lx-%#lx\n", dev->mem_start, dev->mem_end-1);
+
+#if ES_DEBUG & ES_D_PROBE
+        if (inb(ioaddr + ES_CFG5))
+                printk("es3210: Warning - DMA channel enabled, but not used here.\n");
+#endif
+        /* Note, point at the 8390, and not the card... */
+        dev->base_addr = ioaddr + ES_NIC_OFFSET;
+
+        ei_status.name = "ES3210";
+        ei_status.tx_start_page = ES_START_PG;
+        ei_status.rx_start_page = ES_START_PG + TX_PAGES;
+        ei_status.stop_page = ES_STOP_PG;
+        ei_status.word16 = 1;
+
+        if (ei_debug > 0)
+                printk(version);
+
+        ei_status.reset_8390 = &es_reset_8390;
+        ei_status.block_input = &es_block_input;
+        ei_status.block_output = &es_block_output;
+        ei_status.get_8390_hdr = &es_get_8390_hdr;
+
+        dev->netdev_ops = &ei_netdev_ops;
+        NS8390_init(dev, 0);
+
+        retval = register_netdev(dev);
+        if (retval)
+                goto out1;
+        return 0;
+out1:
+        free_irq(dev->irq, dev);
+out:
+        release_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT);
+        return retval;
+}
+
+/*
+ *      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 es_reset_8390(struct net_device *dev)
+{
+        unsigned short ioaddr = dev->base_addr;
+        unsigned long end;
+
+        outb(0x04, ioaddr + ES_RESET_PORT);
+        if (ei_debug > 1) printk("%s: resetting the ES3210...", dev->name);
+
+        end = jiffies + 2*HZ/100;
+        while ((signed)(end - jiffies) > 0) continue;
+
+        ei_status.txing = 0;
+        outb(0x01, ioaddr + ES_RESET_PORT);
+        if (ei_debug > 1) printk("reset done\n");
+}
+
+/*
+ *      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
+es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+        void __iomem *hdr_start = ei_status.mem + ((ring_page - ES_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 es_get_8390_hdr() above.
+ */
+
+static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb,
+                                                  int ring_offset)
+{
+        void __iomem *xfer_start = ei_status.mem + ring_offset - ES_START_PG*256;
+
+        if (ring_offset + count > ES_STOP_PG*256) {
+                /* Packet wraps over end of ring buffer. */
+                int semi_count = ES_STOP_PG*256 - ring_offset;
+                memcpy_fromio(skb->data, xfer_start, semi_count);
+                count -= semi_count;
+                memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
+        } else {
+                /* Packet is in one chunk. */
+                memcpy_fromio(skb->data, xfer_start, count);
+        }
+}
+
+static void es_block_output(struct net_device *dev, int count,
+                                const unsigned char *buf, int start_page)
+{
+        void __iomem *shmem = ei_status.mem + ((start_page - ES_START_PG)<<8);
+
+        count = (count + 3) & ~3;     /* Round up to doubleword */
+        memcpy_toio(shmem, buf, count);
+}
+
+#ifdef MODULE
+#define MAX_ES_CARDS    4       /* Max number of ES3210 cards per module */
+#define NAMELEN         8       /* # of chars for storing dev->name */
+static struct net_device *dev_es3210[MAX_ES_CARDS];
+static int io[MAX_ES_CARDS];
+static int irq[MAX_ES_CARDS];
+static int mem[MAX_ES_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("Racal-Interlan ES3210 EISA ethernet driver");
+MODULE_LICENSE("GPL");
+
+int __init init_module(void)
+{
+        struct net_device *dev;
+        int this_dev, found = 0;
+
+        for (this_dev = 0; this_dev < MAX_ES_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_es_probe(dev) == 0) {
+                        dev_es3210[found++] = dev;
+                        continue;
+                }
+                free_netdev(dev);
+                printk(KERN_WARNING "es3210.c: No es3210 card found (i/o = 0x%x).\n", io[this_dev]);
+                break;
+        }
+        if (found)
+                return 0;
+        return -ENXIO;
+}
+
+static void cleanup_card(struct net_device *dev)
+{
+        free_irq(dev->irq, dev);
+        release_region(dev->base_addr, ES_IO_EXTENT);
+        iounmap(ei_status.mem);
+}
+
+void __exit
+cleanup_module(void)
+{
+        int this_dev;
+
+        for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
+                struct net_device *dev = dev_es3210[this_dev];
+                if (dev) {
+                        unregister_netdev(dev);
+                        cleanup_card(dev);
+                        free_netdev(dev);
+                }
+        }
+}
+#endif /* MODULE */
+