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path: root/drivers/net/pcmcia/com20020_cs.c
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Diffstat (limited to 'drivers/net/pcmcia/com20020_cs.c')
-rw-r--r--drivers/net/pcmcia/com20020_cs.c509
1 files changed, 509 insertions, 0 deletions
diff --git a/drivers/net/pcmcia/com20020_cs.c b/drivers/net/pcmcia/com20020_cs.c
new file mode 100644
index 00000000000..4294e1e3f15
--- /dev/null
+++ b/drivers/net/pcmcia/com20020_cs.c
@@ -0,0 +1,509 @@
+/*
+ * 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
+ *
+ * **********************
+ */
+#include <linux/kernel.h>
+#include <linux/init.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/arcdevice.h>
+#include <linux/com20020.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+
+#define VERSION "arcnet: COM20020 PCMCIA support loaded.\n"
+
+#ifdef PCMCIA_DEBUG
+
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+
+static void regdump(struct net_device *dev)
+{
+ int ioaddr = dev->base_addr;
+ int count;
+
+ printk("com20020 register dump:\n");
+ for (count = ioaddr; count < ioaddr + 16; count++)
+ {
+ if (!(count % 16))
+ printk("\n%04X: ", count);
+ printk("%02X ", inb(count));
+ }
+ printk("\n");
+
+ printk("buffer0 dump:\n");
+ /* set up the address register */
+ count = 0;
+ outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI);
+ outb(count & 0xff, _ADDR_LO);
+
+ for (count = 0; count < 256+32; count++)
+ {
+ if (!(count % 16))
+ printk("\n%04X: ", count);
+
+ /* copy the data */
+ printk("%02X ", inb(_MEMDATA));
+ }
+ printk("\n");
+}
+
+#else
+
+#define DEBUG(n, args...) do { } while (0)
+static inline void regdump(struct net_device *dev) { }
+
+#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 void com20020_config(dev_link_t *link);
+static void com20020_release(dev_link_t *link);
+static int com20020_event(event_t event, int priority,
+ event_callback_args_t *args);
+
+static dev_info_t dev_info = "com20020_cs";
+
+static dev_link_t *com20020_attach(void);
+static void com20020_detach(dev_link_t *);
+
+static dev_link_t *dev_list;
+
+/*====================================================================*/
+
+typedef struct com20020_dev_t {
+ struct net_device *dev;
+ dev_node_t node;
+} com20020_dev_t;
+
+/*======================================================================
+
+ com20020_attach() creates an "instance" of the driver, allocating
+ local data structures for one device. The device is registered
+ with Card Services.
+
+======================================================================*/
+
+static dev_link_t *com20020_attach(void)
+{
+ client_reg_t client_reg;
+ dev_link_t *link;
+ com20020_dev_t *info;
+ struct net_device *dev;
+ int ret;
+ struct arcnet_local *lp;
+
+ DEBUG(0, "com20020_attach()\n");
+
+ /* Create new network device */
+ link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
+ if (!link)
+ return NULL;
+
+ info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
+ if (!info)
+ goto fail_alloc_info;
+
+ dev = alloc_arcdev("");
+ if (!dev)
+ goto fail_alloc_dev;
+
+ memset(info, 0, sizeof(struct com20020_dev_t));
+ memset(link, 0, sizeof(struct dev_link_t));
+ lp = dev->priv;
+ 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;
+
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+ link->io.NumPorts1 = 16;
+ link->io.IOAddrLines = 16;
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+ link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+ link->conf.Attributes = CONF_ENABLE_IRQ;
+ link->conf.Vcc = 50;
+ link->conf.IntType = INT_MEMORY_AND_IO;
+ link->conf.Present = PRESENT_OPTION;
+
+
+ link->irq.Instance = info->dev = dev;
+ link->priv = info;
+
+ /* Register with Card Services */
+ link->next = dev_list;
+ dev_list = link;
+ client_reg.dev_info = &dev_info;
+ client_reg.EventMask =
+ CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+ CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+ CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+ client_reg.event_handler = &com20020_event;
+ client_reg.Version = 0x0210;
+ client_reg.event_callback_args.client_data = link;
+ ret = pcmcia_register_client(&link->handle, &client_reg);
+ if (ret != 0) {
+ cs_error(link->handle, RegisterClient, ret);
+ com20020_detach(link);
+ return NULL;
+ }
+
+ return link;
+
+fail_alloc_dev:
+ kfree(info);
+fail_alloc_info:
+ kfree(link);
+ return NULL;
+} /* com20020_attach */
+
+/*======================================================================
+
+ This deletes a driver "instance". The device is de-registered
+ with Card Services. If it has been released, all local data
+ structures are freed. Otherwise, the structures will be freed
+ when the device is released.
+
+======================================================================*/
+
+static void com20020_detach(dev_link_t *link)
+{
+ struct com20020_dev_t *info = link->priv;
+ dev_link_t **linkp;
+ struct net_device *dev;
+
+ DEBUG(1,"detach...\n");
+
+ DEBUG(0, "com20020_detach(0x%p)\n", link);
+
+ /* Locate device structure */
+ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+ if (*linkp == link) break;
+ if (*linkp == NULL)
+ return;
+
+ dev = info->dev;
+
+ if (link->dev) {
+ DEBUG(1,"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);
+ }
+
+ if (link->state & DEV_CONFIG)
+ com20020_release(link);
+
+ if (link->handle)
+ pcmcia_deregister_client(link->handle);
+
+ /* Unlink device structure, free bits */
+ DEBUG(1,"unlinking...\n");
+ *linkp = link->next;
+ if (link->priv)
+ {
+ dev = info->dev;
+ if (dev)
+ {
+ DEBUG(1,"kfree...\n");
+ free_netdev(dev);
+ }
+ DEBUG(1,"kfree2...\n");
+ kfree(info);
+ }
+ DEBUG(1,"kfree3...\n");
+ kfree(link);
+
+} /* com20020_detach */
+
+/*======================================================================
+
+ com20020_config() is scheduled to run after a CARD_INSERTION event
+ is received, to configure the PCMCIA socket, and to make the
+ device available to the system.
+
+======================================================================*/
+
+#define CS_CHECK(fn, ret) \
+do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+static void com20020_config(dev_link_t *link)
+{
+ struct arcnet_local *lp;
+ client_handle_t handle;
+ tuple_t tuple;
+ cisparse_t parse;
+ com20020_dev_t *info;
+ struct net_device *dev;
+ int i, last_ret, last_fn;
+ u_char buf[64];
+ int ioaddr;
+
+ handle = link->handle;
+ info = link->priv;
+ dev = info->dev;
+
+ DEBUG(1,"config...\n");
+
+ DEBUG(0, "com20020_config(0x%p)\n", link);
+
+ tuple.Attributes = 0;
+ tuple.TupleData = buf;
+ tuple.TupleDataMax = 64;
+ tuple.TupleOffset = 0;
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+ CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+ CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+ link->conf.ConfigBase = parse.config.base;
+
+ /* Configure card */
+ link->state |= DEV_CONFIG;
+
+ DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1);
+ i = !CS_SUCCESS;
+ if (!link->io.BasePort1)
+ {
+ for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
+ {
+ link->io.BasePort1 = ioaddr;
+ i = pcmcia_request_io(link->handle, &link->io);
+ if (i == CS_SUCCESS)
+ break;
+ }
+ }
+ else
+ i = pcmcia_request_io(link->handle, &link->io);
+
+ if (i != CS_SUCCESS)
+ {
+ DEBUG(1,"arcnet: requestIO failed totally!\n");
+ goto failed;
+ }
+
+ ioaddr = dev->base_addr = link->io.BasePort1;
+ DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr);
+
+ DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n",
+ link->irq.AssignedIRQ,
+ link->irq.IRQInfo1, link->irq.IRQInfo2);
+ i = pcmcia_request_irq(link->handle, &link->irq);
+ if (i != CS_SUCCESS)
+ {
+ DEBUG(1,"arcnet: requestIRQ failed totally!\n");
+ goto failed;
+ }
+
+ dev->irq = link->irq.AssignedIRQ;
+
+ CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
+
+ if (com20020_check(dev))
+ {
+ regdump(dev);
+ goto failed;
+ }
+
+ lp = dev->priv;
+ lp->card_name = "PCMCIA COM20020";
+ lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
+
+ link->dev = &info->node;
+ link->state &= ~DEV_CONFIG_PENDING;
+ SET_NETDEV_DEV(dev, &handle_to_dev(handle));
+
+ i = com20020_found(dev, 0); /* calls register_netdev */
+
+ if (i != 0) {
+ DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n");
+ link->dev = NULL;
+ goto failed;
+ }
+
+ strcpy(info->node.dev_name, dev->name);
+
+ DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n",
+ dev->name, dev->base_addr, dev->irq);
+ return;
+
+cs_failed:
+ cs_error(link->handle, last_fn, last_ret);
+failed:
+ DEBUG(1,"com20020_config failed...\n");
+ com20020_release(link);
+} /* com20020_config */
+
+/*======================================================================
+
+ After a card is removed, com20020_release() will unregister the net
+ device, and release the PCMCIA configuration. If the device is
+ still open, this will be postponed until it is closed.
+
+======================================================================*/
+
+static void com20020_release(dev_link_t *link)
+{
+
+ DEBUG(1,"release...\n");
+
+ DEBUG(0, "com20020_release(0x%p)\n", link);
+
+ pcmcia_release_configuration(link->handle);
+ pcmcia_release_io(link->handle, &link->io);
+ pcmcia_release_irq(link->handle, &link->irq);
+
+ link->state &= ~(DEV_CONFIG | DEV_RELEASE_PENDING);
+}
+
+/*======================================================================
+
+ The card status event handler. Mostly, this schedules other
+ stuff to run after an event is received. A CARD_REMOVAL event
+ also sets some flags to discourage the net drivers from trying
+ to talk to the card any more.
+
+======================================================================*/
+
+static int com20020_event(event_t event, int priority,
+ event_callback_args_t *args)
+{
+ dev_link_t *link = args->client_data;
+ com20020_dev_t *info = link->priv;
+ struct net_device *dev = info->dev;
+
+ DEBUG(1, "com20020_event(0x%06x)\n", event);
+
+ switch (event) {
+ case CS_EVENT_CARD_REMOVAL:
+ link->state &= ~DEV_PRESENT;
+ if (link->state & DEV_CONFIG)
+ netif_device_detach(dev);
+ break;
+ case CS_EVENT_CARD_INSERTION:
+ link->state |= DEV_PRESENT;
+ com20020_config(link);
+ break;
+ case CS_EVENT_PM_SUSPEND:
+ link->state |= DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_RESET_PHYSICAL:
+ if (link->state & DEV_CONFIG) {
+ if (link->open) {
+ netif_device_detach(dev);
+ }
+ pcmcia_release_configuration(link->handle);
+ }
+ break;
+ case CS_EVENT_PM_RESUME:
+ link->state &= ~DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_CARD_RESET:
+ if (link->state & DEV_CONFIG) {
+ pcmcia_request_configuration(link->handle, &link->conf);
+ if (link->open) {
+ int ioaddr = dev->base_addr;
+ struct arcnet_local *lp = dev->priv;
+ ARCRESET;
+ }
+ }
+ break;
+ }
+ return 0;
+} /* com20020_event */
+
+
+
+static struct pcmcia_driver com20020_cs_driver = {
+ .owner = THIS_MODULE,
+ .drv = {
+ .name = "com20020_cs",
+ },
+ .attach = com20020_attach,
+ .detach = com20020_detach,
+};
+
+static int __init init_com20020_cs(void)
+{
+ return pcmcia_register_driver(&com20020_cs_driver);
+}
+
+static void __exit exit_com20020_cs(void)
+{
+ pcmcia_unregister_driver(&com20020_cs_driver);
+ BUG_ON(dev_list != NULL);
+}
+
+module_init(init_com20020_cs);
+module_exit(exit_com20020_cs);
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