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@@ -0,0 +1,855 @@
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+/*
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+ *
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+ * arch/xtensa/platform-iss/network.c
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+ *
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+ * Platform specific initialization.
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+ *
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+ * Authors: Chris Zankel <chris@zankel.net>
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+ * Based on work form the UML team.
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+ *
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+ * Copyright 2005 Tensilica Inc.
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation; either version 2 of the License, or (at your
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+ * option) any later version.
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+ *
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+ */
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+
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+#include <linux/config.h>
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+#include <linux/list.h>
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+#include <linux/irq.h>
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+#include <linux/spinlock.h>
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+#include <linux/slab.h>
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+#include <linux/timer.h>
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+#include <linux/if_ether.h>
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+#include <linux/inetdevice.h>
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+#include <linux/init.h>
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+#include <linux/if_tun.h>
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+#include <linux/etherdevice.h>
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+#include <linux/interrupt.h>
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+#include <linux/ioctl.h>
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+#include <linux/bootmem.h>
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+#include <linux/ethtool.h>
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+#include <linux/rtnetlink.h>
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+#include <linux/timer.h>
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+
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+#include <xtensa/simcall.h>
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+
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+#define DRIVER_NAME "iss-netdev"
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+#define ETH_MAX_PACKET 1500
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+#define ETH_HEADER_OTHER 14
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+#define ISS_NET_TIMER_VALUE (2 * HZ)
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+
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+
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+static DEFINE_SPINLOCK(opened_lock);
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+static LIST_HEAD(opened);
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+
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+static DEFINE_SPINLOCK(devices_lock);
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+static LIST_HEAD(devices);
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+
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+/* ------------------------------------------------------------------------- */
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+
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+/* We currently only support the TUNTAP transport protocol. */
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+
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+#define TRANSPORT_TUNTAP_NAME "tuntap"
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+#define TRANSPORT_TUNTAP_MTU ETH_MAX_PACKET
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+
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+struct tuntap_info {
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+ char dev_name[IFNAMSIZ];
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+ int fixed_config;
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+ unsigned char gw[ETH_ALEN];
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+ int fd;
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+};
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+
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+/* ------------------------------------------------------------------------- */
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+
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+
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+/* This structure contains out private information for the driver. */
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+
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+struct iss_net_private {
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+
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+ struct list_head device_list;
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+ struct list_head opened_list;
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+
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+ spinlock_t lock;
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+ struct net_device *dev;
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+ struct platform_device pdev;
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+ struct timer_list tl;
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+ struct net_device_stats stats;
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+
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+ struct timer_list timer;
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+ unsigned int timer_val;
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+
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+ int index;
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+ int mtu;
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+
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+ unsigned char mac[ETH_ALEN];
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+ int have_mac;
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+
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+ struct {
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+ union {
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+ struct tuntap_info tuntap;
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+ } info;
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+
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+ int (*open)(struct iss_net_private *lp);
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+ void (*close)(struct iss_net_private *lp);
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+ int (*read)(struct iss_net_private *lp, struct sk_buff **skb);
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+ int (*write)(struct iss_net_private *lp, struct sk_buff **skb);
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+ unsigned short (*protocol)(struct sk_buff *skb);
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+ int (*poll)(struct iss_net_private *lp);
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+ } tp;
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+
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+};
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+
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+/* ======================= ISS SIMCALL INTERFACE =========================== */
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+
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+/* Note: __simc must _not_ be declared inline! */
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+
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+static int errno;
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+
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+static int __simc (int a, int b, int c, int d, int e, int f)
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+{
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+ int ret;
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+ __asm__ __volatile__ ("simcall\n"
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+ "mov %0, a2\n"
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+ "mov %1, a3\n" : "=a" (ret), "=a" (errno)
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+ : : "a2", "a3");
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+ return ret;
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+}
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+
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+static int inline simc_open(char *file, int flags, int mode)
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+{
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+ return __simc(SYS_open, (int) file, flags, mode, 0, 0);
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+}
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+
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+static int inline simc_close(int fd)
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+{
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+ return __simc(SYS_close, fd, 0, 0, 0, 0);
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+}
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+
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+static int inline simc_ioctl(int fd, int request, void *arg)
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+{
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+ return __simc(SYS_ioctl, fd, request, (int) arg, 0, 0);
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+}
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+
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+static int inline simc_read(int fd, void *buf, size_t count)
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+{
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+ return __simc(SYS_read, fd, (int) buf, count, 0, 0);
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+}
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+
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+static int inline simc_write(int fd, void *buf, size_t count)
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+{
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+ return __simc(SYS_write, fd, (int) buf, count, 0, 0);
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+}
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+
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+static int inline simc_poll(int fd)
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+{
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+ struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
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+
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+ return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv,0,0);
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+}
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+
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+/* ================================ HELPERS ================================ */
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+
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+
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+static char *split_if_spec(char *str, ...)
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+{
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+ char **arg, *end;
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+ va_list ap;
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+
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+ va_start(ap, str);
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+ while ((arg = va_arg(ap, char**)) != NULL) {
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+ if (*str == '\0')
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+ return NULL;
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+ end = strchr(str, ',');
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+ if (end != str)
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+ *arg = str;
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+ if (end == NULL)
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+ return NULL;
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+ *end ++ = '\0';
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+ str = end;
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+ }
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+ va_end(ap);
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+ return str;
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+}
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+
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+
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+#if 0
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+/* Adjust SKB. */
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+
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+struct sk_buff *ether_adjust_skb(struct sk_buff *skb, int extra)
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+{
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+ if ((skb != NULL) && (skb_tailroom(skb) < extra)) {
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+ struct sk_buff *skb2;
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+
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+ skb2 = skb_copy_expand(skb, 0, extra, GFP_ATOMIC);
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+ dev_kfree_skb(skb);
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+ skb = skb2;
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+ }
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+ if (skb != NULL)
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+ skb_put(skb, extra);
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+
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+ return skb;
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+}
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+#endif
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+
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+/* Return the IP address as a string for a given device. */
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+
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+static void dev_ip_addr(void *d, char *buf, char *bin_buf)
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+{
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+ struct net_device *dev = d;
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+ struct in_device *ip = dev->ip_ptr;
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+ struct in_ifaddr *in;
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+ u32 addr;
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+
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+ if ((ip == NULL) || ((in = ip->ifa_list) == NULL)) {
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+ printk(KERN_WARNING "Device not assigned an IP address!\n");
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+ return;
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+ }
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+
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+ addr = in->ifa_address;
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+ sprintf(buf, "%d.%d.%d.%d", addr & 0xff, (addr >> 8) & 0xff,
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+ (addr >> 16) & 0xff, addr >> 24);
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+
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+ if (bin_buf) {
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+ bin_buf[0] = addr & 0xff;
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+ bin_buf[1] = (addr >> 8) & 0xff;
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+ bin_buf[2] = (addr >> 16) & 0xff;
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+ bin_buf[3] = addr >> 24;
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+ }
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+}
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+
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+/* Set Ethernet address of the specified device. */
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+
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+static void inline set_ether_mac(void *d, unsigned char *addr)
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+{
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+ struct net_device *dev = d;
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+ memcpy(dev->dev_addr, addr, ETH_ALEN);
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+}
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+
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+
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+/* ======================= TUNTAP TRANSPORT INTERFACE ====================== */
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+
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+static int tuntap_open(struct iss_net_private *lp)
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+{
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+ struct ifreq ifr;
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+ char *dev_name = lp->tp.info.tuntap.dev_name;
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+ int err = -EINVAL;
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+ int fd;
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+
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+ /* We currently only support a fixed configuration. */
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+
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+ if (!lp->tp.info.tuntap.fixed_config)
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+ return -EINVAL;
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+
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+ if ((fd = simc_open("/dev/net/tun", 02, 0)) < 0) { /* O_RDWR */
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+ printk("Failed to open /dev/net/tun, returned %d "
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+ "(errno = %d)\n", fd, errno);
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+ return fd;
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+ }
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+
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+ memset(&ifr, 0, sizeof ifr);
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+ ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
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+ strlcpy(ifr.ifr_name, dev_name, sizeof ifr.ifr_name - 1);
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+
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+ if ((err = simc_ioctl(fd, TUNSETIFF, (void*) &ifr)) < 0) {
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+ printk("Failed to set interface, returned %d "
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+ "(errno = %d)\n", err, errno);
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+ simc_close(fd);
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+ return err;
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+ }
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+
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+ lp->tp.info.tuntap.fd = fd;
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+ return err;
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+}
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+
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+static void tuntap_close(struct iss_net_private *lp)
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+{
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+#if 0
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+ if (lp->tp.info.tuntap.fixed_config)
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+ iter_addresses(lp->tp.info.tuntap.dev, close_addr, lp->host.dev_name);
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+#endif
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+ simc_close(lp->tp.info.tuntap.fd);
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+ lp->tp.info.tuntap.fd = -1;
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+}
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+
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+static int tuntap_read (struct iss_net_private *lp, struct sk_buff **skb)
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+{
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+#if 0
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+ *skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER);
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+ if (*skb == NULL)
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+ return -ENOMEM;
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+#endif
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+
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+ return simc_read(lp->tp.info.tuntap.fd,
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+ (*skb)->data, (*skb)->dev->mtu + ETH_HEADER_OTHER);
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+}
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+
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+static int tuntap_write (struct iss_net_private *lp, struct sk_buff **skb)
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+{
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+ return simc_write(lp->tp.info.tuntap.fd, (*skb)->data, (*skb)->len);
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+}
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+
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+unsigned short tuntap_protocol(struct sk_buff *skb)
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+{
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+ return eth_type_trans(skb, skb->dev);
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+}
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+
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+static int tuntap_poll(struct iss_net_private *lp)
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+{
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+ return simc_poll(lp->tp.info.tuntap.fd);
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+}
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+
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+/*
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+ * Currently only a device name is supported.
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+ * ethX=tuntap[,[mac address][,[device name]]]
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+ */
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+
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+static int tuntap_probe(struct iss_net_private *lp, int index, char *init)
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+{
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+ const int len = strlen(TRANSPORT_TUNTAP_NAME);
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+ char *dev_name = NULL, *mac_str = NULL, *rem = NULL;
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+
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+ /* Transport should be 'tuntap': ethX=tuntap,mac,dev_name */
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+
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+ if (strncmp(init, TRANSPORT_TUNTAP_NAME, len))
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+ return 0;
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+
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+ if (*(init += strlen(TRANSPORT_TUNTAP_NAME)) == ',') {
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+ if ((rem=split_if_spec(init+1, &mac_str, &dev_name)) != NULL) {
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+ printk("Extra garbage on specification : '%s'\n", rem);
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+ return 0;
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+ }
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+ } else if (*init != '\0') {
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+ printk("Invalid argument: %s. Skipping device!\n", init);
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+ return 0;
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+ }
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+
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+ if (dev_name) {
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+ strncpy(lp->tp.info.tuntap.dev_name, dev_name,
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+ sizeof lp->tp.info.tuntap.dev_name);
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+ lp->tp.info.tuntap.fixed_config = 1;
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+ } else
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+ strcpy(lp->tp.info.tuntap.dev_name, TRANSPORT_TUNTAP_NAME);
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+
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+
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+#if 0
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+ if (setup_etheraddr(mac_str, lp->mac))
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+ lp->have_mac = 1;
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+#endif
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+ lp->mtu = TRANSPORT_TUNTAP_MTU;
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+
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+ //lp->info.tuntap.gate_addr = gate_addr;
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+
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+ lp->tp.info.tuntap.fd = -1;
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+
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+ lp->tp.open = tuntap_open;
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+ lp->tp.close = tuntap_close;
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+ lp->tp.read = tuntap_read;
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+ lp->tp.write = tuntap_write;
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+ lp->tp.protocol = tuntap_protocol;
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+ lp->tp.poll = tuntap_poll;
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+
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+ printk("TUN/TAP backend - ");
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+#if 0
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+ if (lp->host.gate_addr != NULL)
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+ printk("IP = %s", lp->host.gate_addr);
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+#endif
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+ printk("\n");
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+
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+ return 1;
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+}
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+
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+/* ================================ ISS NET ================================ */
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+
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+static int iss_net_rx(struct net_device *dev)
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+{
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+ struct iss_net_private *lp = dev->priv;
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+ int pkt_len;
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+ struct sk_buff *skb;
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+
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+ /* Check if there is any new data. */
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+
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+ if (lp->tp.poll(lp) == 0)
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+ return 0;
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+
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+ /* Try to allocate memory, if it fails, try again next round. */
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+
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+ if ((skb = dev_alloc_skb(dev->mtu + 2 + ETH_HEADER_OTHER)) == NULL) {
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+ lp->stats.rx_dropped++;
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+ return 0;
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+ }
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+
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+ skb_reserve(skb, 2);
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+
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+ /* Setup skb */
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+
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+ skb->dev = dev;
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+ skb->mac.raw = skb->data;
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+ pkt_len = lp->tp.read(lp, &skb);
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+ skb_put(skb, pkt_len);
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+
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+ if (pkt_len > 0) {
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+ skb_trim(skb, pkt_len);
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+ skb->protocol = lp->tp.protocol(skb);
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+ // netif_rx(skb);
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+ netif_rx_ni(skb);
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+
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+ lp->stats.rx_bytes += skb->len;
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+ lp->stats.rx_packets++;
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+ return pkt_len;
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+ }
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+ kfree_skb(skb);
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+ return pkt_len;
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+}
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+
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+static int iss_net_poll(void)
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+{
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+ struct list_head *ele;
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+ int err, ret = 0;
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+
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+ spin_lock(&opened_lock);
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+
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+ list_for_each(ele, &opened) {
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+ struct iss_net_private *lp;
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+
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+ lp = list_entry(ele, struct iss_net_private, opened_list);
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+
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+ if (!netif_running(lp->dev))
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+ break;
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+
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|
|
+ spin_lock(&lp->lock);
|
|
|
+
|
|
|
+ while ((err = iss_net_rx(lp->dev)) > 0)
|
|
|
+ ret++;
|
|
|
+
|
|
|
+ spin_unlock(&lp->lock);
|
|
|
+
|
|
|
+ if (err < 0) {
|
|
|
+ printk(KERN_ERR "Device '%s' read returned %d, "
|
|
|
+ "shutting it down\n", lp->dev->name, err);
|
|
|
+ dev_close(lp->dev);
|
|
|
+ } else {
|
|
|
+ // FIXME reactivate_fd(lp->fd, ISS_ETH_IRQ);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ spin_unlock(&opened_lock);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static void iss_net_timer(unsigned long priv)
|
|
|
+{
|
|
|
+ struct iss_net_private* lp = (struct iss_net_private*) priv;
|
|
|
+
|
|
|
+ spin_lock(&lp->lock);
|
|
|
+
|
|
|
+ iss_net_poll();
|
|
|
+
|
|
|
+ mod_timer(&lp->timer, jiffies + lp->timer_val);
|
|
|
+
|
|
|
+ spin_unlock(&lp->lock);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static int iss_net_open(struct net_device *dev)
|
|
|
+{
|
|
|
+ struct iss_net_private *lp = dev->priv;
|
|
|
+ char addr[sizeof "255.255.255.255\0"];
|
|
|
+ int err;
|
|
|
+
|
|
|
+ spin_lock(&lp->lock);
|
|
|
+
|
|
|
+ if ((err = lp->tp.open(lp)) < 0)
|
|
|
+ goto out;
|
|
|
+
|
|
|
+ if (!lp->have_mac) {
|
|
|
+ dev_ip_addr(dev, addr, &lp->mac[2]);
|
|
|
+ set_ether_mac(dev, lp->mac);
|
|
|
+ }
|
|
|
+
|
|
|
+ netif_start_queue(dev);
|
|
|
+
|
|
|
+ /* clear buffer - it can happen that the host side of the interface
|
|
|
+ * is full when we gethere. In this case, new data is never queued,
|
|
|
+ * SIGIOs never arrive, and the net never works.
|
|
|
+ */
|
|
|
+ while ((err = iss_net_rx(dev)) > 0)
|
|
|
+ ;
|
|
|
+
|
|
|
+ spin_lock(&opened_lock);
|
|
|
+ list_add(&lp->opened_list, &opened);
|
|
|
+ spin_unlock(&opened_lock);
|
|
|
+
|
|
|
+ init_timer(&lp->timer);
|
|
|
+ lp->timer_val = ISS_NET_TIMER_VALUE;
|
|
|
+ lp->timer.data = (unsigned long) lp;
|
|
|
+ lp->timer.function = iss_net_timer;
|
|
|
+ mod_timer(&lp->timer, jiffies + lp->timer_val);
|
|
|
+
|
|
|
+out:
|
|
|
+ spin_unlock(&lp->lock);
|
|
|
+ return err;
|
|
|
+}
|
|
|
+
|
|
|
+static int iss_net_close(struct net_device *dev)
|
|
|
+{
|
|
|
+ struct iss_net_private *lp = dev->priv;
|
|
|
+printk("iss_net_close!\n");
|
|
|
+ netif_stop_queue(dev);
|
|
|
+ spin_lock(&lp->lock);
|
|
|
+
|
|
|
+ spin_lock(&opened_lock);
|
|
|
+ list_del(&opened);
|
|
|
+ spin_unlock(&opened_lock);
|
|
|
+
|
|
|
+ del_timer_sync(&lp->timer);
|
|
|
+
|
|
|
+ lp->tp.close(lp);
|
|
|
+
|
|
|
+ spin_unlock(&lp->lock);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int iss_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
|
+{
|
|
|
+ struct iss_net_private *lp = dev->priv;
|
|
|
+ unsigned long flags;
|
|
|
+ int len;
|
|
|
+
|
|
|
+ netif_stop_queue(dev);
|
|
|
+ spin_lock_irqsave(&lp->lock, flags);
|
|
|
+
|
|
|
+ len = lp->tp.write(lp, &skb);
|
|
|
+
|
|
|
+ if (len == skb->len) {
|
|
|
+ lp->stats.tx_packets++;
|
|
|
+ lp->stats.tx_bytes += skb->len;
|
|
|
+ dev->trans_start = jiffies;
|
|
|
+ netif_start_queue(dev);
|
|
|
+
|
|
|
+ /* this is normally done in the interrupt when tx finishes */
|
|
|
+ netif_wake_queue(dev);
|
|
|
+
|
|
|
+ } else if (len == 0) {
|
|
|
+ netif_start_queue(dev);
|
|
|
+ lp->stats.tx_dropped++;
|
|
|
+
|
|
|
+ } else {
|
|
|
+ netif_start_queue(dev);
|
|
|
+ printk(KERN_ERR "iss_net_start_xmit: failed(%d)\n", len);
|
|
|
+ }
|
|
|
+
|
|
|
+ spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
+
|
|
|
+ dev_kfree_skb(skb);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static struct net_device_stats *iss_net_get_stats(struct net_device *dev)
|
|
|
+{
|
|
|
+ struct iss_net_private *lp = dev->priv;
|
|
|
+ return &lp->stats;
|
|
|
+}
|
|
|
+
|
|
|
+static void iss_net_set_multicast_list(struct net_device *dev)
|
|
|
+{
|
|
|
+#if 0
|
|
|
+ if (dev->flags & IFF_PROMISC)
|
|
|
+ return;
|
|
|
+ else if (dev->mc_count)
|
|
|
+ dev->flags |= IFF_ALLMULTI;
|
|
|
+ else
|
|
|
+ dev->flags &= ~IFF_ALLMULTI;
|
|
|
+#endif
|
|
|
+}
|
|
|
+
|
|
|
+static void iss_net_tx_timeout(struct net_device *dev)
|
|
|
+{
|
|
|
+#if 0
|
|
|
+ dev->trans_start = jiffies;
|
|
|
+ netif_wake_queue(dev);
|
|
|
+#endif
|
|
|
+}
|
|
|
+
|
|
|
+static int iss_net_set_mac(struct net_device *dev, void *addr)
|
|
|
+{
|
|
|
+#if 0
|
|
|
+ struct iss_net_private *lp = dev->priv;
|
|
|
+ struct sockaddr *hwaddr = addr;
|
|
|
+
|
|
|
+ spin_lock(&lp->lock);
|
|
|
+ memcpy(dev->dev_addr, hwaddr->sa_data, ETH_ALEN);
|
|
|
+ spin_unlock(&lp->lock);
|
|
|
+#endif
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int iss_net_change_mtu(struct net_device *dev, int new_mtu)
|
|
|
+{
|
|
|
+#if 0
|
|
|
+ struct iss_net_private *lp = dev->priv;
|
|
|
+ int err = 0;
|
|
|
+
|
|
|
+ spin_lock(&lp->lock);
|
|
|
+
|
|
|
+ // FIXME not needed new_mtu = transport_set_mtu(new_mtu, &lp->user);
|
|
|
+
|
|
|
+ if (new_mtu < 0)
|
|
|
+ err = new_mtu;
|
|
|
+ else
|
|
|
+ dev->mtu = new_mtu;
|
|
|
+
|
|
|
+ spin_unlock(&lp->lock);
|
|
|
+ return err;
|
|
|
+#endif
|
|
|
+ return -EINVAL;
|
|
|
+}
|
|
|
+
|
|
|
+static int iss_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
|
+{
|
|
|
+#if 0
|
|
|
+ static const struct ethtool_drvinfo info = {
|
|
|
+ .cmd = ETHTOOL_GDRVINFO,
|
|
|
+ .driver = DRIVER_NAME,
|
|
|
+ .version = "42",
|
|
|
+ };
|
|
|
+ void *useraddr;
|
|
|
+ u32 ethcmd;
|
|
|
+
|
|
|
+ switch (cmd) {
|
|
|
+ case SIOCETHTOOL:
|
|
|
+ useraddr = ifr->ifr_data;
|
|
|
+ if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
|
|
|
+ return -EFAULT;
|
|
|
+
|
|
|
+ switch (ethcmd) {
|
|
|
+ case ETHTOOL_GDRVINFO:
|
|
|
+ if (copy_to_user(useraddr, &info, sizeof(info)))
|
|
|
+ return -EFAULT;
|
|
|
+ return 0;
|
|
|
+ default:
|
|
|
+ return -EOPNOTSUPP;
|
|
|
+ }
|
|
|
+ default:
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ return -EINVAL;
|
|
|
+}
|
|
|
+
|
|
|
+void iss_net_user_timer_expire(unsigned long _conn)
|
|
|
+{
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static struct device_driver iss_net_driver = {
|
|
|
+ .name = DRIVER_NAME,
|
|
|
+ .bus = &platform_bus_type,
|
|
|
+};
|
|
|
+
|
|
|
+static int driver_registered;
|
|
|
+
|
|
|
+static int iss_net_configure(int index, char *init)
|
|
|
+{
|
|
|
+ struct net_device *dev;
|
|
|
+ struct iss_net_private *lp;
|
|
|
+ int err;
|
|
|
+
|
|
|
+ if ((dev = alloc_etherdev(sizeof *lp)) == NULL) {
|
|
|
+ printk(KERN_ERR "eth_configure: failed to allocate device\n");
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Initialize private element. */
|
|
|
+
|
|
|
+ lp = dev->priv;
|
|
|
+ *lp = ((struct iss_net_private) {
|
|
|
+ .device_list = LIST_HEAD_INIT(lp->device_list),
|
|
|
+ .opened_list = LIST_HEAD_INIT(lp->opened_list),
|
|
|
+ .lock = SPIN_LOCK_UNLOCKED,
|
|
|
+ .dev = dev,
|
|
|
+ .index = index,
|
|
|
+ //.fd = -1,
|
|
|
+ .mac = { 0xfe, 0xfd, 0x0, 0x0, 0x0, 0x0 },
|
|
|
+ .have_mac = 0,
|
|
|
+ });
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Try all transport protocols.
|
|
|
+ * Note: more protocols can be added by adding '&& !X_init(lp, eth)'.
|
|
|
+ */
|
|
|
+
|
|
|
+ if (!tuntap_probe(lp, index, init)) {
|
|
|
+ printk("Invalid arguments. Skipping device!\n");
|
|
|
+ goto errout;
|
|
|
+ }
|
|
|
+
|
|
|
+ printk(KERN_INFO "Netdevice %d ", index);
|
|
|
+ if (lp->have_mac)
|
|
|
+ printk("(%02x:%02x:%02x:%02x:%02x:%02x) ",
|
|
|
+ lp->mac[0], lp->mac[1],
|
|
|
+ lp->mac[2], lp->mac[3],
|
|
|
+ lp->mac[4], lp->mac[5]);
|
|
|
+ printk(": ");
|
|
|
+
|
|
|
+ /* sysfs register */
|
|
|
+
|
|
|
+ if (!driver_registered) {
|
|
|
+ driver_register(&iss_net_driver);
|
|
|
+ driver_registered = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ spin_lock(&devices_lock);
|
|
|
+ list_add(&lp->device_list, &devices);
|
|
|
+ spin_unlock(&devices_lock);
|
|
|
+
|
|
|
+ lp->pdev.id = index;
|
|
|
+ lp->pdev.name = DRIVER_NAME;
|
|
|
+ platform_device_register(&lp->pdev);
|
|
|
+ SET_NETDEV_DEV(dev,&lp->pdev.dev);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * If this name ends up conflicting with an existing registered
|
|
|
+ * netdevice, that is OK, register_netdev{,ice}() will notice this
|
|
|
+ * and fail.
|
|
|
+ */
|
|
|
+ snprintf(dev->name, sizeof dev->name, "eth%d", index);
|
|
|
+
|
|
|
+ dev->mtu = lp->mtu;
|
|
|
+ dev->open = iss_net_open;
|
|
|
+ dev->hard_start_xmit = iss_net_start_xmit;
|
|
|
+ dev->stop = iss_net_close;
|
|
|
+ dev->get_stats = iss_net_get_stats;
|
|
|
+ dev->set_multicast_list = iss_net_set_multicast_list;
|
|
|
+ dev->tx_timeout = iss_net_tx_timeout;
|
|
|
+ dev->set_mac_address = iss_net_set_mac;
|
|
|
+ dev->change_mtu = iss_net_change_mtu;
|
|
|
+ dev->do_ioctl = iss_net_ioctl;
|
|
|
+ dev->watchdog_timeo = (HZ >> 1);
|
|
|
+ dev->irq = -1;
|
|
|
+
|
|
|
+ rtnl_lock();
|
|
|
+ err = register_netdevice(dev);
|
|
|
+ rtnl_unlock();
|
|
|
+
|
|
|
+ if (err) {
|
|
|
+ printk("Error registering net device!\n");
|
|
|
+ /* XXX: should we call ->remove() here? */
|
|
|
+ free_netdev(dev);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ init_timer(&lp->tl);
|
|
|
+ lp->tl.function = iss_net_user_timer_expire;
|
|
|
+
|
|
|
+#if 0
|
|
|
+ if (lp->have_mac)
|
|
|
+ set_ether_mac(dev, lp->mac);
|
|
|
+#endif
|
|
|
+ return 0;
|
|
|
+
|
|
|
+errout:
|
|
|
+ // FIXME: unregister; free, etc..
|
|
|
+ return -EIO;
|
|
|
+
|
|
|
+}
|
|
|
+
|
|
|
+/* ------------------------------------------------------------------------- */
|
|
|
+
|
|
|
+/* Filled in during early boot */
|
|
|
+
|
|
|
+struct list_head eth_cmd_line = LIST_HEAD_INIT(eth_cmd_line);
|
|
|
+
|
|
|
+struct iss_net_init {
|
|
|
+ struct list_head list;
|
|
|
+ char *init; /* init string */
|
|
|
+ int index;
|
|
|
+};
|
|
|
+
|
|
|
+/*
|
|
|
+ * Parse the command line and look for 'ethX=...' fields, and register all
|
|
|
+ * those fields. They will be later initialized in iss_net_init.
|
|
|
+ */
|
|
|
+
|
|
|
+#define ERR KERN_ERR "iss_net_setup: "
|
|
|
+
|
|
|
+static int iss_net_setup(char *str)
|
|
|
+{
|
|
|
+ struct iss_net_private *device = NULL;
|
|
|
+ struct iss_net_init *new;
|
|
|
+ struct list_head *ele;
|
|
|
+ char *end;
|
|
|
+ int n;
|
|
|
+
|
|
|
+ n = simple_strtoul(str, &end, 0);
|
|
|
+ if (end == str) {
|
|
|
+ printk(ERR "Failed to parse '%s'\n", str);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+ if (n < 0) {
|
|
|
+ printk(ERR "Device %d is negative\n", n);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+ if (*(str = end) != '=') {
|
|
|
+ printk(ERR "Expected '=' after device number\n");
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ spin_lock(&devices_lock);
|
|
|
+
|
|
|
+ list_for_each(ele, &devices) {
|
|
|
+ device = list_entry(ele, struct iss_net_private, device_list);
|
|
|
+ if (device->index == n)
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ spin_unlock(&devices_lock);
|
|
|
+
|
|
|
+ if (device && device->index == n) {
|
|
|
+ printk(ERR "Device %d already configured\n", n);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((new = alloc_bootmem(sizeof new)) == NULL) {
|
|
|
+ printk("Alloc_bootmem failed\n");
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ INIT_LIST_HEAD(&new->list);
|
|
|
+ new->index = n;
|
|
|
+ new->init = str + 1;
|
|
|
+
|
|
|
+ list_add_tail(&new->list, ð_cmd_line);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+#undef ERR
|
|
|
+
|
|
|
+__setup("eth", iss_net_setup);
|
|
|
+
|
|
|
+/*
|
|
|
+ * Initialize all ISS Ethernet devices previously registered in iss_net_setup.
|
|
|
+ */
|
|
|
+
|
|
|
+static int iss_net_init(void)
|
|
|
+{
|
|
|
+ struct list_head *ele, *next;
|
|
|
+
|
|
|
+ /* Walk through all Ethernet devices specified in the command line. */
|
|
|
+
|
|
|
+ list_for_each_safe(ele, next, ð_cmd_line) {
|
|
|
+ struct iss_net_init *eth;
|
|
|
+ eth = list_entry(ele, struct iss_net_init, list);
|
|
|
+ iss_net_configure(eth->index, eth->init);
|
|
|
+ }
|
|
|
+
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+module_init(iss_net_init);
|
|
|
+
|
Chris Zankel