v4.19.13 snapshot.
diff --git a/drivers/net/arcnet/com20020_cs.c b/drivers/net/arcnet/com20020_cs.c
new file mode 100644
index 0000000..cf607ff
--- /dev/null
+++ b/drivers/net/arcnet/com20020_cs.c
@@ -0,0 +1,322 @@
+/*
+ * Linux ARCnet driver - COM20020 PCMCIA support
+ *
+ * Written 1994-1999 by Avery Pennarun,
+ * based on an ISA version by David Woodhouse.
+ * Derived from ibmtr_cs.c by Steve Kipisz (pcmcia-cs 3.1.4)
+ * which was derived from pcnet_cs.c by David Hinds.
+ * Some additional portions 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.
+ *
+ * **********************
+ * Changes:
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/2000
+ * - reorganize kmallocs in com20020_attach, checking all for failure
+ * and releasing the previous allocations if one fails
+ * **********************
+ *
+ * For more details, see drivers/net/arcnet.c
+ *
+ * **********************
+ */
+
+#define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/io.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#include "arcdevice.h"
+#include "com20020.h"
+
+static void regdump(struct net_device *dev)
+{
+#ifdef DEBUG
+ int ioaddr = dev->base_addr;
+ int count;
+
+ netdev_dbg(dev, "register dump:\n");
+ for (count = 0; count < 16; count++) {
+ if (!(count % 16))
+ pr_cont("%04X:", ioaddr + count);
+ pr_cont(" %02X", arcnet_inb(ioaddr, count));
+ }
+ pr_cont("\n");
+
+ netdev_dbg(dev, "buffer0 dump:\n");
+ /* set up the address register */
+ count = 0;
+ arcnet_outb((count >> 8) | RDDATAflag | AUTOINCflag,
+ ioaddr, com20020_REG_W_ADDR_HI);
+ arcnet_outb(count & 0xff, ioaddr, COM20020_REG_W_ADDR_LO);
+
+ for (count = 0; count < 256 + 32; count++) {
+ if (!(count % 16))
+ pr_cont("%04X:", count);
+
+ /* copy the data */
+ pr_cont(" %02X", arcnet_inb(ioaddr, COM20020_REG_RW_MEMDATA));
+ }
+ pr_cont("\n");
+#endif
+}
+
+/*====================================================================*/
+
+/* Parameters that can be set with 'insmod' */
+
+static int node;
+static int timeout = 3;
+static int backplane;
+static int clockp;
+static int clockm;
+
+module_param(node, int, 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 int com20020_config(struct pcmcia_device *link);
+static void com20020_release(struct pcmcia_device *link);
+
+static void com20020_detach(struct pcmcia_device *p_dev);
+
+/*====================================================================*/
+
+static int com20020_probe(struct pcmcia_device *p_dev)
+{
+ struct com20020_dev *info;
+ struct net_device *dev;
+ struct arcnet_local *lp;
+
+ dev_dbg(&p_dev->dev, "com20020_attach()\n");
+
+ /* Create new network device */
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ goto fail_alloc_info;
+
+ dev = alloc_arcdev("");
+ if (!dev)
+ goto fail_alloc_dev;
+
+ lp = netdev_priv(dev);
+ lp->timeout = timeout;
+ lp->backplane = backplane;
+ lp->clockp = clockp;
+ lp->clockm = clockm & 3;
+ lp->hw.owner = THIS_MODULE;
+
+ /* fill in our module parameters as defaults */
+ dev->dev_addr[0] = node;
+
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+ p_dev->resource[0]->end = 16;
+ p_dev->config_flags |= CONF_ENABLE_IRQ;
+
+ info->dev = dev;
+ p_dev->priv = info;
+
+ return com20020_config(p_dev);
+
+fail_alloc_dev:
+ kfree(info);
+fail_alloc_info:
+ return -ENOMEM;
+} /* com20020_attach */
+
+static void com20020_detach(struct pcmcia_device *link)
+{
+ struct com20020_dev *info = link->priv;
+ struct net_device *dev = info->dev;
+
+ dev_dbg(&link->dev, "detach...\n");
+
+ dev_dbg(&link->dev, "com20020_detach\n");
+
+ dev_dbg(&link->dev, "unregister...\n");
+
+ unregister_netdev(dev);
+
+ /* this is necessary because we register our IRQ separately
+ * from card services.
+ */
+ if (dev->irq)
+ free_irq(dev->irq, dev);
+
+ com20020_release(link);
+
+ /* Unlink device structure, free bits */
+ dev_dbg(&link->dev, "unlinking...\n");
+ if (link->priv) {
+ dev = info->dev;
+ if (dev) {
+ dev_dbg(&link->dev, "kfree...\n");
+ free_netdev(dev);
+ }
+ dev_dbg(&link->dev, "kfree2...\n");
+ kfree(info);
+ }
+
+} /* com20020_detach */
+
+static int com20020_config(struct pcmcia_device *link)
+{
+ struct arcnet_local *lp;
+ struct com20020_dev *info;
+ struct net_device *dev;
+ int i, ret;
+ int ioaddr;
+
+ info = link->priv;
+ dev = info->dev;
+
+ dev_dbg(&link->dev, "config...\n");
+
+ dev_dbg(&link->dev, "com20020_config\n");
+
+ dev_dbg(&link->dev, "baseport1 is %Xh\n",
+ (unsigned int)link->resource[0]->start);
+
+ i = -ENODEV;
+ link->io_lines = 16;
+
+ if (!link->resource[0]->start) {
+ for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10) {
+ link->resource[0]->start = ioaddr;
+ i = pcmcia_request_io(link);
+ if (i == 0)
+ break;
+ }
+ } else {
+ i = pcmcia_request_io(link);
+ }
+
+ if (i != 0) {
+ dev_dbg(&link->dev, "requestIO failed totally!\n");
+ goto failed;
+ }
+
+ ioaddr = dev->base_addr = link->resource[0]->start;
+ dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr);
+
+ dev_dbg(&link->dev, "request IRQ %d\n",
+ link->irq);
+ if (!link->irq) {
+ dev_dbg(&link->dev, "requestIRQ failed totally!\n");
+ goto failed;
+ }
+
+ dev->irq = link->irq;
+
+ ret = pcmcia_enable_device(link);
+ if (ret)
+ goto failed;
+
+ if (com20020_check(dev)) {
+ regdump(dev);
+ goto failed;
+ }
+
+ lp = netdev_priv(dev);
+ lp->card_name = "PCMCIA COM20020";
+ lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
+
+ SET_NETDEV_DEV(dev, &link->dev);
+
+ i = com20020_found(dev, 0); /* calls register_netdev */
+
+ if (i != 0) {
+ dev_notice(&link->dev,
+ "com20020_found() failed\n");
+ goto failed;
+ }
+
+ netdev_dbg(dev, "port %#3lx, irq %d\n",
+ dev->base_addr, dev->irq);
+ return 0;
+
+failed:
+ dev_dbg(&link->dev, "com20020_config failed...\n");
+ com20020_release(link);
+ return -ENODEV;
+} /* com20020_config */
+
+static void com20020_release(struct pcmcia_device *link)
+{
+ dev_dbg(&link->dev, "com20020_release\n");
+ pcmcia_disable_device(link);
+}
+
+static int com20020_suspend(struct pcmcia_device *link)
+{
+ struct com20020_dev *info = link->priv;
+ struct net_device *dev = info->dev;
+
+ if (link->open)
+ netif_device_detach(dev);
+
+ return 0;
+}
+
+static int com20020_resume(struct pcmcia_device *link)
+{
+ struct com20020_dev *info = link->priv;
+ struct net_device *dev = info->dev;
+
+ if (link->open) {
+ int ioaddr = dev->base_addr;
+ struct arcnet_local *lp = netdev_priv(dev);
+
+ arcnet_outb(lp->config | 0x80, ioaddr, COM20020_REG_W_CONFIG);
+ udelay(5);
+ arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
+ }
+
+ return 0;
+}
+
+static const struct pcmcia_device_id com20020_ids[] = {
+ PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
+ "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
+ PCMCIA_DEVICE_PROD_ID12("SoHard AG",
+ "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
+
+static struct pcmcia_driver com20020_cs_driver = {
+ .owner = THIS_MODULE,
+ .name = "com20020_cs",
+ .probe = com20020_probe,
+ .remove = com20020_detach,
+ .id_table = com20020_ids,
+ .suspend = com20020_suspend,
+ .resume = com20020_resume,
+};
+module_pcmcia_driver(com20020_cs_driver);