Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 229 insertions, 0 deletions

diff --git a/drivers/net/arcnet/com20020-isa.c b/drivers/net/arcnet/com20020-isa.c
new file mode 100644
index 000000000..293a621e6
--- /dev/null
+++ b/drivers/net/arcnet/com20020-isa.c
@@ -0,0 +1,229 @@
+/*
+ * Linux ARCnet driver - COM20020 chipset support
+ *
+ * Written 1997 by David Woodhouse.
+ * Written 1994-1999 by Avery Pennarun.
+ * Written 1999-2000 by Martin Mares <mj@ucw.cz>.
+ * Derived from skeleton.c by Donald Becker.
+ *
+ * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
+ *  for sponsoring the further development of this driver.
+ *
+ * **********************
+ *
+ * The original copyright of skeleton.c was as follows:
+ *
+ * skeleton.c Written 1993 by Donald Becker.
+ * Copyright 1993 United States Government as represented by the
+ * Director, National Security Agency.  This software may only be used
+ * and distributed according to the terms of the GNU General Public License as
+ * modified by SRC, incorporated herein by reference.
+ *
+ * **********************
+ *
+ * For more details, see drivers/net/arcnet.c
+ *
+ * **********************
+ */
+
+#define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/ioport.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/memblock.h>
+#include <linux/io.h>
+
+#include "arcdevice.h"
+#include "com20020.h"
+
+/* We cannot (yet) probe for an IO mapped card, although we can check that
+ * it's where we were told it was, and even do autoirq.
+ */
+static int __init com20020isa_probe(struct net_device *dev)
+{
+	int ioaddr;
+	unsigned long airqmask;
+	struct arcnet_local *lp = netdev_priv(dev);
+	int err;
+
+	if (BUGLVL(D_NORMAL))
+		pr_info("%s\n", "COM20020 ISA support (by David Woodhouse et al.)");
+
+	ioaddr = dev->base_addr;
+	if (!ioaddr) {
+		arc_printk(D_NORMAL, dev, "No autoprobe (yet) for IO mapped cards; you must specify the base address!\n");
+		return -ENODEV;
+	}
+	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) {
+		arc_printk(D_NORMAL, dev, "IO region %xh-%xh already allocated.\n",
+			   ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
+		return -ENXIO;
+	}
+	if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
+		arc_printk(D_NORMAL, dev, "IO address %x empty\n", ioaddr);
+		err = -ENODEV;
+		goto out;
+	}
+	if (com20020_check(dev)) {
+		err = -ENODEV;
+		goto out;
+	}
+
+	if (!dev->irq) {
+		/* if we do this, we're sure to get an IRQ since the
+		 * card has just reset and the NORXflag is on until
+		 * we tell it to start receiving.
+		 */
+		arc_printk(D_INIT_REASONS, dev, "intmask was %02Xh\n",
+			   arcnet_inb(ioaddr, COM20020_REG_R_STATUS));
+		arcnet_outb(0, ioaddr, COM20020_REG_W_INTMASK);
+		airqmask = probe_irq_on();
+		arcnet_outb(NORXflag, ioaddr, COM20020_REG_W_INTMASK);
+		udelay(1);
+		arcnet_outb(0, ioaddr, COM20020_REG_W_INTMASK);
+		dev->irq = probe_irq_off(airqmask);
+
+		if ((int)dev->irq <= 0) {
+			arc_printk(D_INIT_REASONS, dev, "Autoprobe IRQ failed first time\n");
+			airqmask = probe_irq_on();
+			arcnet_outb(NORXflag, ioaddr, COM20020_REG_W_INTMASK);
+			udelay(5);
+			arcnet_outb(0, ioaddr, COM20020_REG_W_INTMASK);
+			dev->irq = probe_irq_off(airqmask);
+			if ((int)dev->irq <= 0) {
+				arc_printk(D_NORMAL, dev, "Autoprobe IRQ failed.\n");
+				err = -ENODEV;
+				goto out;
+			}
+		}
+	}
+
+	lp->card_name = "ISA COM20020";
+
+	err = com20020_found(dev, 0);
+	if (err != 0)
+		goto out;
+
+	return 0;
+
+out:
+	release_region(ioaddr, ARCNET_TOTAL_SIZE);
+	return err;
+}
+
+static int node = 0;
+static int io = 0x0;		/* <--- EDIT THESE LINES FOR YOUR CONFIGURATION */
+static int irq = 0;		/* or use the insmod io= irq= shmem= options */
+static char device[9];		/* use eg. device="arc1" to change name */
+static int timeout = 3;
+static int backplane = 0;
+static int clockp = 0;
+static int clockm = 0;
+
+module_param(node, int, 0);
+module_param_hw(io, int, ioport, 0);
+module_param_hw(irq, int, irq, 0);
+module_param_string(device, device, sizeof(device), 0);
+module_param(timeout, int, 0);
+module_param(backplane, int, 0);
+module_param(clockp, int, 0);
+module_param(clockm, int, 0);
+
+MODULE_LICENSE("GPL");
+
+static struct net_device *my_dev;
+
+static int __init com20020_init(void)
+{
+	struct net_device *dev;
+	struct arcnet_local *lp;
+
+	dev = alloc_arcdev(device);
+	if (!dev)
+		return -ENOMEM;
+
+	if (node && node != 0xff)
+		arcnet_set_addr(dev, node);
+
+	dev->netdev_ops = &com20020_netdev_ops;
+
+	lp = netdev_priv(dev);
+	lp->backplane = backplane;
+	lp->clockp = clockp & 7;
+	lp->clockm = clockm & 3;
+	lp->timeout = timeout & 3;
+	lp->hw.owner = THIS_MODULE;
+
+	dev->base_addr = io;
+	dev->irq = irq;
+
+	if (dev->irq == 2)
+		dev->irq = 9;
+
+	if (com20020isa_probe(dev)) {
+		free_arcdev(dev);
+		return -EIO;
+	}
+
+	my_dev = dev;
+	return 0;
+}
+
+static void __exit com20020_exit(void)
+{
+	unregister_netdev(my_dev);
+	free_irq(my_dev->irq, my_dev);
+	release_region(my_dev->base_addr, ARCNET_TOTAL_SIZE);
+	free_arcdev(my_dev);
+}
+
+#ifndef MODULE
+static int __init com20020isa_setup(char *s)
+{
+	int ints[8];
+
+	s = get_options(s, 8, ints);
+	if (!ints[0])
+		return 1;
+
+	switch (ints[0]) {
+	default:		/* ERROR */
+		pr_info("Too many arguments\n");
+		fallthrough;
+	case 6:		/* Timeout */
+		timeout = ints[6];
+		fallthrough;
+	case 5:		/* CKP value */
+		clockp = ints[5];
+		fallthrough;
+	case 4:		/* Backplane flag */
+		backplane = ints[4];
+		fallthrough;
+	case 3:		/* Node ID */
+		node = ints[3];
+		fallthrough;
+	case 2:		/* IRQ */
+		irq = ints[2];
+		fallthrough;
+	case 1:		/* IO address */
+		io = ints[1];
+	}
+	if (*s)
+		snprintf(device, sizeof(device), "%s", s);
+	return 1;
+}
+
+__setup("com20020=", com20020isa_setup);
+
+#endif				/* MODULE */
+
+module_init(com20020_init)
+module_exit(com20020_exit)