Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 535 insertions, 0 deletions

diff --git a/drivers/net/pcmcia/ibmtr_cs.c b/drivers/net/pcmcia/ibmtr_cs.c
new file mode 100644
index 00000000000..3107ccfe8f3
--- /dev/null
+++ b/drivers/net/pcmcia/ibmtr_cs.c
@@ -0,0 +1,535 @@
+/*======================================================================
+
+    A PCMCIA token-ring driver for IBM-based cards
+
+    This driver supports the IBM PCMCIA Token-Ring Card.
+    Written by Steve Kipisz, kipisz@vnet.ibm.com or
+                             bungy@ibm.net
+
+    Written 1995,1996.
+
+    This code is based on pcnet_cs.c from David Hinds.
+    
+    V2.2.0 February 1999 - Mike Phillips phillim@amtrak.com
+
+    Linux V2.2.x presented significant changes to the underlying
+    ibmtr.c code.  Mainly the code became a lot more organized and
+    modular.
+
+    This caused the old PCMCIA Token Ring driver to give up and go 
+    home early. Instead of just patching the old code to make it 
+    work, the PCMCIA code has been streamlined, updated and possibly
+    improved.
+
+    This code now only contains code required for the Card Services.
+    All we do here is set the card up enough so that the real ibmtr.c
+    driver can find it and work with it properly.
+
+    i.e. We set up the io port, irq, mmio memory and shared ram
+    memory.  This enables ibmtr_probe in ibmtr.c to find the card and
+    configure it as though it was a normal ISA and/or PnP card.
+
+    CHANGES
+
+    v2.2.5 April 1999 Mike Phillips (phillim@amtrak.com)
+    Obscure bug fix, required changed to ibmtr.c not ibmtr_cs.c
+    
+    v2.2.7 May 1999 Mike Phillips (phillim@amtrak.com)
+    Updated to version 2.2.7 to match the first version of the kernel
+    that the modification to ibmtr.c were incorporated into.
+    
+    v2.2.17 July 2000 Burt Silverman (burts@us.ibm.com)
+    Address translation feature of PCMCIA controller is usable so
+    memory windows can be placed in High memory (meaning above
+    0xFFFFF.)
+
+======================================================================*/
+
+#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/module.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/trdevice.h>
+#include <linux/ibmtr.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+#define PCMCIA
+#include "../tokenring/ibmtr.c"
+
+#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 char *version =
+"ibmtr_cs.c 1.10   1996/01/06 05:19:00 (Steve Kipisz)\n"
+"           2.2.7  1999/05/03 12:00:00 (Mike Phillips)\n"
+"           2.4.2  2001/30/28 Midnight (Burt Silverman)\n";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+/* Parameters that can be set with 'insmod' */
+
+/* MMIO base address */
+static u_long mmiobase = 0xce000;
+
+/* SRAM base address */
+static u_long srambase = 0xd0000;
+
+/* SRAM size 8,16,32,64 */
+static u_long sramsize = 64;
+
+/* Ringspeed 4,16 */
+static int ringspeed = 16;
+
+module_param(mmiobase, ulong, 0);
+module_param(srambase, ulong, 0);
+module_param(sramsize, ulong, 0);
+module_param(ringspeed, int, 0);
+MODULE_LICENSE("GPL");
+
+/*====================================================================*/
+
+static void ibmtr_config(dev_link_t *link);
+static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase);
+static void ibmtr_release(dev_link_t *link);
+static int ibmtr_event(event_t event, int priority,
+                       event_callback_args_t *args);
+
+static dev_info_t dev_info = "ibmtr_cs";
+
+static dev_link_t *ibmtr_attach(void);
+static void ibmtr_detach(dev_link_t *);
+
+static dev_link_t *dev_list;
+
+extern int ibmtr_probe_card(struct net_device *dev);
+extern irqreturn_t tok_interrupt (int irq, void *dev_id, struct pt_regs *regs);
+
+/*====================================================================*/
+
+typedef struct ibmtr_dev_t {
+    dev_link_t		link;
+    struct net_device	*dev;
+    dev_node_t          node;
+    window_handle_t     sram_win_handle;
+    struct tok_info	*ti;
+} ibmtr_dev_t;
+
+static void netdev_get_drvinfo(struct net_device *dev,
+			       struct ethtool_drvinfo *info)
+{
+	strcpy(info->driver, "ibmtr_cs");
+}
+
+static struct ethtool_ops netdev_ethtool_ops = {
+	.get_drvinfo		= netdev_get_drvinfo,
+};
+
+/*======================================================================
+
+    ibmtr_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 *ibmtr_attach(void)
+{
+    ibmtr_dev_t *info;
+    dev_link_t *link;
+    struct net_device *dev;
+    client_reg_t client_reg;
+    int ret;
+    
+    DEBUG(0, "ibmtr_attach()\n");
+
+    /* Create new token-ring device */
+    info = kmalloc(sizeof(*info), GFP_KERNEL); 
+    if (!info) return NULL;
+    memset(info,0,sizeof(*info));
+    dev = alloc_trdev(sizeof(struct tok_info));
+    if (!dev) { 
+	kfree(info); 
+	return NULL;
+    } 
+
+    link = &info->link;
+    link->priv = info;
+    info->ti = netdev_priv(dev);
+
+    link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+    link->io.NumPorts1 = 4;
+    link->io.IOAddrLines = 16;
+    link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
+    link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+    link->irq.Handler = &tok_interrupt;
+    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;
+    
+    SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
+
+    /* 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 = &ibmtr_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);
+	goto out_detach;
+    }
+
+out:
+    return link;
+
+out_detach:
+    ibmtr_detach(link);
+    link = NULL;
+    goto out;
+} /* ibmtr_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 ibmtr_detach(dev_link_t *link)
+{
+    struct ibmtr_dev_t *info = link->priv;
+    dev_link_t **linkp;
+    struct net_device *dev;
+
+    DEBUG(0, "ibmtr_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)
+	unregister_netdev(dev);
+
+    {
+	struct tok_info *ti = netdev_priv(dev);
+	del_timer_sync(&(ti->tr_timer));
+    }
+    if (link->state & DEV_CONFIG)
+        ibmtr_release(link);
+
+    if (link->handle)
+        pcmcia_deregister_client(link->handle);
+
+    /* Unlink device structure, free bits */
+    *linkp = link->next;
+    free_netdev(dev);
+    kfree(info); 
+} /* ibmtr_detach */
+
+/*======================================================================
+
+    ibmtr_config() is scheduled to run after a CARD_INSERTION event
+    is received, to configure the PCMCIA socket, and to make the
+    token-ring 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 ibmtr_config(dev_link_t *link)
+{
+    client_handle_t handle = link->handle;
+    ibmtr_dev_t *info = link->priv;
+    struct net_device *dev = info->dev;
+    struct tok_info *ti = netdev_priv(dev);
+    tuple_t tuple;
+    cisparse_t parse;
+    win_req_t req;
+    memreq_t mem;
+    int i, last_ret, last_fn;
+    u_char buf[64];
+
+    DEBUG(0, "ibmtr_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;
+
+    link->conf.ConfigIndex = 0x61;
+
+    /* Determine if this is PRIMARY or ALTERNATE. */
+
+    /* Try PRIMARY card at 0xA20-0xA23 */
+    link->io.BasePort1 = 0xA20;
+    i = pcmcia_request_io(link->handle, &link->io);
+    if (i != CS_SUCCESS) {
+	/* Couldn't get 0xA20-0xA23.  Try ALTERNATE at 0xA24-0xA27. */
+	link->io.BasePort1 = 0xA24;
+	CS_CHECK(RequestIO, pcmcia_request_io(link->handle, &link->io));
+    }
+    dev->base_addr = link->io.BasePort1;
+
+    CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
+    dev->irq = link->irq.AssignedIRQ;
+    ti->irq = link->irq.AssignedIRQ;
+    ti->global_int_enable=GLOBAL_INT_ENABLE+((dev->irq==9) ? 2 : dev->irq);
+
+    /* Allocate the MMIO memory window */
+    req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE;
+    req.Attributes |= WIN_USE_WAIT;
+    req.Base = 0; 
+    req.Size = 0x2000;
+    req.AccessSpeed = 250;
+    CS_CHECK(RequestWindow, pcmcia_request_window(&link->handle, &req, &link->win));
+
+    mem.CardOffset = mmiobase;
+    mem.Page = 0;
+    CS_CHECK(MapMemPage, pcmcia_map_mem_page(link->win, &mem));
+    ti->mmio = ioremap(req.Base, req.Size);
+
+    /* Allocate the SRAM memory window */
+    req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE;
+    req.Attributes |= WIN_USE_WAIT;
+    req.Base = 0;
+    req.Size = sramsize * 1024;
+    req.AccessSpeed = 250;
+    CS_CHECK(RequestWindow, pcmcia_request_window(&link->handle, &req, &info->sram_win_handle));
+
+    mem.CardOffset = srambase;
+    mem.Page = 0;
+    CS_CHECK(MapMemPage, pcmcia_map_mem_page(info->sram_win_handle, &mem));
+
+    ti->sram_base = mem.CardOffset >> 12;
+    ti->sram_virt = ioremap(req.Base, req.Size);
+    ti->sram_phys = req.Base;
+
+    CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
+
+    /*  Set up the Token-Ring Controller Configuration Register and
+        turn on the card.  Check the "Local Area Network Credit Card
+        Adapters Technical Reference"  SC30-3585 for this info.  */
+    ibmtr_hw_setup(dev, mmiobase);
+
+    link->dev = &info->node;
+    link->state &= ~DEV_CONFIG_PENDING;
+    SET_NETDEV_DEV(dev, &handle_to_dev(handle));
+
+    i = ibmtr_probe_card(dev);
+    if (i != 0) {
+	printk(KERN_NOTICE "ibmtr_cs: register_netdev() failed\n");
+	link->dev = NULL;
+	goto failed;
+    }
+
+    strcpy(info->node.dev_name, dev->name);
+
+    printk(KERN_INFO "%s: port %#3lx, irq %d,",
+           dev->name, dev->base_addr, dev->irq);
+    printk (" mmio %#5lx,", (u_long)ti->mmio);
+    printk (" sram %#5lx,", (u_long)ti->sram_base << 12);
+    printk ("\n" KERN_INFO "  hwaddr=");
+    for (i = 0; i < TR_ALEN; i++)
+        printk("%02X", dev->dev_addr[i]);
+    printk("\n");
+    return;
+
+cs_failed:
+    cs_error(link->handle, last_fn, last_ret);
+failed:
+    ibmtr_release(link);
+} /* ibmtr_config */
+
+/*======================================================================
+
+    After a card is removed, ibmtr_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 ibmtr_release(dev_link_t *link)
+{
+    ibmtr_dev_t *info = link->priv;
+    struct net_device *dev = info->dev;
+
+    DEBUG(0, "ibmtr_release(0x%p)\n", link);
+
+    pcmcia_release_configuration(link->handle);
+    pcmcia_release_io(link->handle, &link->io);
+    pcmcia_release_irq(link->handle, &link->irq);
+    if (link->win) {
+	struct tok_info *ti = netdev_priv(dev);
+	iounmap(ti->mmio);
+	pcmcia_release_window(link->win);
+	pcmcia_release_window(info->sram_win_handle);
+    }
+
+    link->state &= ~DEV_CONFIG;
+}
+
+/*======================================================================
+
+    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 ibmtr_event(event_t event, int priority,
+                       event_callback_args_t *args)
+{
+    dev_link_t *link = args->client_data;
+    ibmtr_dev_t *info = link->priv;
+    struct net_device *dev = info->dev;
+
+    DEBUG(1, "ibmtr_event(0x%06x)\n", event);
+
+    switch (event) {
+    case CS_EVENT_CARD_REMOVAL:
+        link->state &= ~DEV_PRESENT;
+        if (link->state & DEV_CONFIG) {
+	    /* set flag to bypass normal interrupt code */
+	    struct tok_info *priv = netdev_priv(dev);
+	    priv->sram_phys |= 1;
+	    netif_device_detach(dev);
+        }
+        break;
+    case CS_EVENT_CARD_INSERTION:
+        link->state |= DEV_PRESENT;
+	ibmtr_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) {
+		ibmtr_probe(dev);	/* really? */
+		netif_device_attach(dev);
+            }
+        }
+        break;
+    }
+    return 0;
+} /* ibmtr_event */
+
+/*====================================================================*/
+
+static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase)
+{
+    int i;
+
+    /* Bizarre IBM behavior, there are 16 bits of information we
+       need to set, but the card only allows us to send 4 bits at a 
+       time.  For each byte sent to base_addr, bits 7-4 tell the
+       card which part of the 16 bits we are setting, bits 3-0 contain 
+       the actual information */
+
+    /* First nibble provides 4 bits of mmio */
+    i = (mmiobase >> 16) & 0x0F;
+    outb(i, dev->base_addr);
+
+    /* Second nibble provides 3 bits of mmio */
+    i = 0x10 | ((mmiobase >> 12) & 0x0E);
+    outb(i, dev->base_addr);
+
+    /* Third nibble, hard-coded values */
+    i = 0x26;
+    outb(i, dev->base_addr);
+
+    /* Fourth nibble sets shared ram page size */
+
+    /* 8 = 00, 16 = 01, 32 = 10, 64 = 11 */          
+    i = (sramsize >> 4) & 0x07;
+    i = ((i == 4) ? 3 : i) << 2;
+    i |= 0x30;
+
+    if (ringspeed == 16)
+	i |= 2;
+    if (dev->base_addr == 0xA24)
+	i |= 1;
+    outb(i, dev->base_addr);
+
+    /* 0x40 will release the card for use */
+    outb(0x40, dev->base_addr);
+
+    return;
+}
+
+static struct pcmcia_driver ibmtr_cs_driver = {
+	.owner		= THIS_MODULE,
+	.drv		= {
+		.name	= "ibmtr_cs",
+	},
+	.attach		= ibmtr_attach,
+	.detach		= ibmtr_detach,
+};
+
+static int __init init_ibmtr_cs(void)
+{
+	return pcmcia_register_driver(&ibmtr_cs_driver);
+}
+
+static void __exit exit_ibmtr_cs(void)
+{
+	pcmcia_unregister_driver(&ibmtr_cs_driver);
+	BUG_ON(dev_list != NULL);
+}
+
+module_init(init_ibmtr_cs);
+module_exit(exit_ibmtr_cs);