1 files changed, 242 insertions, 0 deletions

diff --git a/drivers/net/ethernet/amd/hplance.c b/drivers/net/ethernet/amd/hplance.c
new file mode 100644
index 000000000000..86aa0d546a5b
--- /dev/null
+++ b/drivers/net/ethernet/amd/hplance.c
@@ -0,0 +1,242 @@
+/* hplance.c  : the  Linux/hp300/lance ethernet driver
+ *
+ * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
+ * Based on the Sun Lance driver and the NetBSD HP Lance driver
+ * Uses the generic 7990.c LANCE code.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+/* Used for the temporal inet entries and routing */
+#include <linux/socket.h>
+#include <linux/route.h>
+#include <linux/dio.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+
+#include "hplance.h"
+
+/* We have 16834 bytes of RAM for the init block and buffers. This places
+ * an upper limit on the number of buffers we can use. NetBSD uses 8 Rx
+ * buffers and 2 Tx buffers.
+ */
+#define LANCE_LOG_TX_BUFFERS 1
+#define LANCE_LOG_RX_BUFFERS 3
+
+#include "7990.h"                                 /* use generic LANCE code */
+
+/* Our private data structure */
+struct hplance_private {
+        struct lance_private lance;
+};
+
+/* function prototypes... This is easy because all the grot is in the
+ * generic LANCE support. All we have to support is probing for boards,
+ * plus board-specific init, open and close actions.
+ * Oh, and we need to tell the generic code how to read and write LANCE registers...
+ */
+static int __devinit hplance_init_one(struct dio_dev *d,
+                                const struct dio_device_id *ent);
+static void __devinit hplance_init(struct net_device *dev,
+                                struct dio_dev *d);
+static void __devexit hplance_remove_one(struct dio_dev *d);
+static void hplance_writerap(void *priv, unsigned short value);
+static void hplance_writerdp(void *priv, unsigned short value);
+static unsigned short hplance_readrdp(void *priv);
+static int hplance_open(struct net_device *dev);
+static int hplance_close(struct net_device *dev);
+
+static struct dio_device_id hplance_dio_tbl[] = {
+        { DIO_ID_LAN },
+        { 0 }
+};
+
+static struct dio_driver hplance_driver = {
+        .name      = "hplance",
+        .id_table  = hplance_dio_tbl,
+        .probe     = hplance_init_one,
+        .remove    = __devexit_p(hplance_remove_one),
+};
+
+static const struct net_device_ops hplance_netdev_ops = {
+        .ndo_open               = hplance_open,
+        .ndo_stop               = hplance_close,
+        .ndo_start_xmit         = lance_start_xmit,
+        .ndo_set_rx_mode        = lance_set_multicast,
+        .ndo_change_mtu         = eth_change_mtu,
+        .ndo_validate_addr      = eth_validate_addr,
+        .ndo_set_mac_address    = eth_mac_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+        .ndo_poll_controller    = lance_poll,
+#endif
+};
+
+/* Find all the HP Lance boards and initialise them... */
+static int __devinit hplance_init_one(struct dio_dev *d,
+                                const struct dio_device_id *ent)
+{
+        struct net_device *dev;
+        int err = -ENOMEM;
+        int i;
+
+        dev = alloc_etherdev(sizeof(struct hplance_private));
+        if (!dev)
+                goto out;
+
+        err = -EBUSY;
+        if (!request_mem_region(dio_resource_start(d),
+                                dio_resource_len(d), d->name))
+                goto out_free_netdev;
+
+        hplance_init(dev, d);
+        err = register_netdev(dev);
+        if (err)
+                goto out_release_mem_region;
+
+        dio_set_drvdata(d, dev);
+
+        printk(KERN_INFO "%s: %s; select code %d, addr %2.2x", dev->name, d->name, d->scode, dev->dev_addr[0]);
+
+        for (i=1; i<6; i++) {
+                printk(":%2.2x", dev->dev_addr[i]);
+        }
+
+        printk(", irq %d\n", d->ipl);
+
+        return 0;
+
+ out_release_mem_region:
+        release_mem_region(dio_resource_start(d), dio_resource_len(d));
+ out_free_netdev:
+        free_netdev(dev);
+ out:
+        return err;
+}
+
+static void __devexit hplance_remove_one(struct dio_dev *d)
+{
+        struct net_device *dev = dio_get_drvdata(d);
+
+        unregister_netdev(dev);
+        release_mem_region(dio_resource_start(d), dio_resource_len(d));
+        free_netdev(dev);
+}
+
+/* Initialise a single lance board at the given DIO device */
+static void __devinit hplance_init(struct net_device *dev, struct dio_dev *d)
+{
+        unsigned long va = (d->resource.start + DIO_VIRADDRBASE);
+        struct hplance_private *lp;
+        int i;
+
+        /* reset the board */
+        out_8(va+DIO_IDOFF, 0xff);
+        udelay(100);                              /* ariba! ariba! udelay! udelay! */
+
+        /* Fill the dev fields */
+        dev->base_addr = va;
+        dev->netdev_ops = &hplance_netdev_ops;
+        dev->dma = 0;
+
+        for (i=0; i<6; i++) {
+                /* The NVRAM holds our ethernet address, one nibble per byte,
+                 * at bytes NVRAMOFF+1,3,5,7,9...
+                 */
+                dev->dev_addr[i] = ((in_8(va + HPLANCE_NVRAMOFF + i*4 + 1) & 0xF) << 4)
+                        | (in_8(va + HPLANCE_NVRAMOFF + i*4 + 3) & 0xF);
+        }
+
+        lp = netdev_priv(dev);
+        lp->lance.name = (char*)d->name;                /* discards const, shut up gcc */
+        lp->lance.base = va;
+        lp->lance.init_block = (struct lance_init_block *)(va + HPLANCE_MEMOFF); /* CPU addr */
+        lp->lance.lance_init_block = NULL;              /* LANCE addr of same RAM */
+        lp->lance.busmaster_regval = LE_C3_BSWP;        /* we're bigendian */
+        lp->lance.irq = d->ipl;
+        lp->lance.writerap = hplance_writerap;
+        lp->lance.writerdp = hplance_writerdp;
+        lp->lance.readrdp = hplance_readrdp;
+        lp->lance.lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS;
+        lp->lance.lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS;
+        lp->lance.rx_ring_mod_mask = RX_RING_MOD_MASK;
+        lp->lance.tx_ring_mod_mask = TX_RING_MOD_MASK;
+}
+
+/* This is disgusting. We have to check the DIO status register for ack every
+ * time we read or write the LANCE registers.
+ */
+static void hplance_writerap(void *priv, unsigned short value)
+{
+        struct lance_private *lp = (struct lance_private *)priv;
+        do {
+                out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value);
+        } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+}
+
+static void hplance_writerdp(void *priv, unsigned short value)
+{
+        struct lance_private *lp = (struct lance_private *)priv;
+        do {
+                out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value);
+        } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+}
+
+static unsigned short hplance_readrdp(void *priv)
+{
+        struct lance_private *lp = (struct lance_private *)priv;
+        __u16 value;
+        do {
+                value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP);
+        } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+        return value;
+}
+
+static int hplance_open(struct net_device *dev)
+{
+        int status;
+        struct lance_private *lp = netdev_priv(dev);
+
+        status = lance_open(dev);                 /* call generic lance open code */
+        if (status)
+                return status;
+        /* enable interrupts at board level. */
+        out_8(lp->base + HPLANCE_STATUS, LE_IE);
+
+        return 0;
+}
+
+static int hplance_close(struct net_device *dev)
+{
+        struct lance_private *lp = netdev_priv(dev);
+
+        out_8(lp->base + HPLANCE_STATUS, 0);    /* disable interrupts at boardlevel */
+        lance_close(dev);
+        return 0;
+}
+
+static int __init hplance_init_module(void)
+{
+        return dio_register_driver(&hplance_driver);
+}
+
+static void __exit hplance_cleanup_module(void)
+{
+        dio_unregister_driver(&hplance_driver);
+}
+
+module_init(hplance_init_module);
+module_exit(hplance_cleanup_module);
+
+MODULE_LICENSE("GPL");