Added missing tegra files.HEADmaster

1 files changed, 918 insertions, 0 deletions

diff --git a/drivers/net/arm/ether3.c b/drivers/net/arm/ether3.c
new file mode 100644
index 00000000000..44a8746f401
--- /dev/null
+++ b/drivers/net/arm/ether3.c
@@ -0,0 +1,918 @@
+/*
+ *  linux/drivers/acorn/net/ether3.c
+ *
+ *  Copyright (C) 1995-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * SEEQ nq8005 ethernet driver for Acorn/ANT Ether3 card
+ *  for Acorn machines
+ *
+ * By Russell King, with some suggestions from borris@ant.co.uk
+ *
+ * Changelog:
+ * 1.04 RMK     29/02/1996      Won't pass packets that are from our ethernet
+ *                              address up to the higher levels - they're
+ *                              silently ignored.  I/F can now be put into
+ *                              multicast mode.  Receiver routine optimised.
+ * 1.05 RMK     30/02/1996      Now claims interrupt at open when part of
+ *                              the kernel rather than when a module.
+ * 1.06 RMK     02/03/1996      Various code cleanups
+ * 1.07 RMK     13/10/1996      Optimised interrupt routine and transmit
+ *                              routines.
+ * 1.08 RMK     14/10/1996      Fixed problem with too many packets,
+ *                              prevented the kernel message about dropped
+ *                              packets appearing too many times a second.
+ *                              Now does not disable all IRQs, only the IRQ
+ *                              used by this card.
+ * 1.09 RMK     10/11/1996      Only enables TX irq when buffer space is low,
+ *                              but we still service the TX queue if we get a
+ *                              RX interrupt.
+ * 1.10 RMK     15/07/1997      Fixed autoprobing of NQ8004.
+ * 1.11 RMK     16/11/1997      Fixed autoprobing of NQ8005A.
+ * 1.12 RMK     31/12/1997      Removed reference to dev_tint for Linux 2.1.
+ *      RMK     27/06/1998      Changed asm/delay.h to linux/delay.h.
+ * 1.13 RMK     29/06/1998      Fixed problem with transmission of packets.
+ *                              Chip seems to have a bug in, whereby if the
+ *                              packet starts two bytes from the end of the
+ *                              buffer, it corrupts the receiver chain, and
+ *                              never updates the transmit status correctly.
+ * 1.14 RMK     07/01/1998      Added initial code for ETHERB addressing.
+ * 1.15 RMK     30/04/1999      More fixes to the transmit routine for buggy
+ *                              hardware.
+ * 1.16 RMK     10/02/2000      Updated for 2.3.43
+ * 1.17 RMK     13/05/2000      Updated for 2.3.99-pre8
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/ecard.h>
+#include <asm/io.h>
+
+static char version[] __devinitdata = "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n";
+
+#include "ether3.h"
+
+static unsigned int net_debug = NET_DEBUG;
+
+static void     ether3_setmulticastlist(struct net_device *dev);
+static int      ether3_rx(struct net_device *dev, unsigned int maxcnt);
+static void     ether3_tx(struct net_device *dev);
+static int      ether3_open (struct net_device *dev);
+static int      ether3_sendpacket (struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t ether3_interrupt (int irq, void *dev_id);
+static int      ether3_close (struct net_device *dev);
+static void     ether3_setmulticastlist (struct net_device *dev);
+static void     ether3_timeout(struct net_device *dev);
+
+#define BUS_16          2
+#define BUS_8           1
+#define BUS_UNKNOWN     0
+
+/* --------------------------------------------------------------------------- */
+
+typedef enum {
+        buffer_write,
+        buffer_read
+} buffer_rw_t;
+
+/*
+ * ether3 read/write.  Slow things down a bit...
+ * The SEEQ8005 doesn't like us writing to its registers
+ * too quickly.
+ */
+static inline void ether3_outb(int v, const void __iomem *r)
+{
+        writeb(v, r);
+        udelay(1);
+}
+
+static inline void ether3_outw(int v, const void __iomem *r)
+{
+        writew(v, r);
+        udelay(1);
+}
+#define ether3_inb(r)           ({ unsigned int __v = readb((r)); udelay(1); __v; })
+#define ether3_inw(r)           ({ unsigned int __v = readw((r)); udelay(1); __v; })
+
+static int
+ether3_setbuffer(struct net_device *dev, buffer_rw_t read, int start)
+{
+        int timeout = 1000;
+
+        ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
+        ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND);
+
+        while ((ether3_inw(REG_STATUS) & STAT_FIFOEMPTY) == 0) {
+                if (!timeout--) {
+                        printk("%s: setbuffer broken\n", dev->name);
+                        priv(dev)->broken = 1;
+                        return 1;
+                }
+                udelay(1);
+        }
+
+        if (read == buffer_read) {
+                ether3_outw(start, REG_DMAADDR);
+                ether3_outw(priv(dev)->regs.command | CMD_FIFOREAD, REG_COMMAND);
+        } else {
+                ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND);
+                ether3_outw(start, REG_DMAADDR);
+        }
+        return 0;
+}
+
+/*
+ * write data to the buffer memory
+ */
+#define ether3_writebuffer(dev,data,length)                     \
+        writesw(REG_BUFWIN, (data), (length) >> 1)
+
+#define ether3_writeword(dev,data)                              \
+        writew((data), REG_BUFWIN)
+
+#define ether3_writelong(dev,data)      {                       \
+        void __iomem *reg_bufwin = REG_BUFWIN;                  \
+        writew((data), reg_bufwin);                             \
+        writew((data) >> 16, reg_bufwin);                       \
+}
+
+/*
+ * read data from the buffer memory
+ */
+#define ether3_readbuffer(dev,data,length)                      \
+        readsw(REG_BUFWIN, (data), (length) >> 1)
+
+#define ether3_readword(dev)                                    \
+        readw(REG_BUFWIN)
+
+#define ether3_readlong(dev)                                    \
+        readw(REG_BUFWIN) | (readw(REG_BUFWIN) << 16)
+
+/*
+ * Switch LED off...
+ */
+static void ether3_ledoff(unsigned long data)
+{
+        struct net_device *dev = (struct net_device *)data;
+        ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2);
+}
+
+/*
+ * switch LED on...
+ */
+static inline void ether3_ledon(struct net_device *dev)
+{
+        del_timer(&priv(dev)->timer);
+        priv(dev)->timer.expires = jiffies + HZ / 50; /* leave on for 1/50th second */
+        priv(dev)->timer.data = (unsigned long)dev;
+        priv(dev)->timer.function = ether3_ledoff;
+        add_timer(&priv(dev)->timer);
+        if (priv(dev)->regs.config2 & CFG2_CTRLO)
+                ether3_outw(priv(dev)->regs.config2 &= ~CFG2_CTRLO, REG_CONFIG2);
+}
+
+/*
+ * Read the ethernet address string from the on board rom.
+ * This is an ascii string!!!
+ */
+static int __devinit
+ether3_addr(char *addr, struct expansion_card *ec)
+{
+        struct in_chunk_dir cd;
+        char *s;
+        
+        if (ecard_readchunk(&cd, ec, 0xf5, 0) && (s = strchr(cd.d.string, '('))) {
+                int i;
+                for (i = 0; i<6; i++) {
+                        addr[i] = simple_strtoul(s + 1, &s, 0x10);
+                        if (*s != (i==5?')' : ':' ))
+                                break;
+                }
+                if (i == 6)
+                        return 0;
+        }