patch-2.3.46 linux/drivers/scsi/pcmcia/fdomain_stub.c

• Lines: 399
• Date: Tue Feb 15 08:53:46 2000
• Orig file: v2.3.45/linux/drivers/scsi/pcmcia/fdomain_stub.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.45/linux/drivers/scsi/pcmcia/fdomain_stub.c linux/drivers/scsi/pcmcia/fdomain_stub.c
@@ -0,0 +1,398 @@
+/*======================================================================
+
+    A driver for Future Domain-compatible PCMCIA SCSI cards
+
+    fdomain_cs.c 1.41 1999/11/15 06:05:48
+
+    The contents of this file are subject to the Mozilla Public
+    License Version 1.1 (the "License"); you may not use this file
+    except in compliance with the License. You may obtain a copy of
+    the License at http://www.mozilla.org/MPL/
+
+    Software distributed under the License is distributed on an "AS
+    IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+    implied. See the License for the specific language governing
+    rights and limitations under the License.
+
+    The initial developer of the original code is David A. Hinds
+    <dhinds@pcmcia.sourceforge.org>.  Portions created by David A. Hinds
+    are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
+
+    Alternatively, the contents of this file may be used under the
+    terms of the GNU Public License version 2 (the "GPL"), in which
+    case the provisions of the GPL are applicable instead of the
+    above.  If you wish to allow the use of your version of this file
+    only under the terms of the GPL and not to allow others to use
+    your version of this file under the MPL, indicate your decision
+    by deleting the provisions above and replace them with the notice
+    and other provisions required by the GPL.  If you do not delete
+    the provisions above, a recipient may use your version of this
+    file under either the MPL or the GPL.
+    
+======================================================================*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/malloc.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/ioport.h>
+#include <scsi/scsi.h>
+#include <linux/major.h>
+#include <linux/blk.h>
+
+#include <../drivers/scsi/scsi.h>
+#include <../drivers/scsi/hosts.h>
+#include <scsi/scsi_ioctl.h>
+#include <../drivers/scsi/fdomain.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+MODULE_PARM(pc_debug, "i");
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version =
+"fdomain_cs.c 1.41 1999/11/15 06:05:48 (David Hinds)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+/* Parameters that can be set with 'insmod' */
+
+/* Bit map of interrupts to choose from */
+static u_int irq_mask = 0xdeb8;
+static int irq_list[4] = { -1 };
+
+MODULE_PARM(irq_mask, "i");
+MODULE_PARM(irq_list, "1-4i");
+
+/*====================================================================*/
+
+typedef struct scsi_info_t {
+    dev_link_t		link;
+    int			ndev;
+    dev_node_t		node[8];
+} scsi_info_t;
+
+extern void fdomain_setup(char *str, int *ints);
+
+static void fdomain_release(u_long arg);
+static int fdomain_event(event_t event, int priority,
+			event_callback_args_t *args);
+
+static dev_link_t *fdomain_attach(void);
+static void fdomain_detach(dev_link_t *);
+
+static Scsi_Host_Template driver_template = FDOMAIN_16X0;
+
+static dev_link_t *dev_list = NULL;
+
+static dev_info_t dev_info = "fdomain_cs";
+
+/*====================================================================*/
+
+static void cs_error(client_handle_t handle, int func, int ret)
+{
+    error_info_t err = { func, ret };
+    CardServices(ReportError, handle, &err);
+}
+
+/*====================================================================*/
+
+static dev_link_t *fdomain_attach(void)
+{
+    scsi_info_t *info;
+    client_reg_t client_reg;
+    dev_link_t *link;
+    int i, ret;
+    
+    DEBUG(0, "fdomain_attach()\n");
+
+    /* Create new SCSI device */
+    info = kmalloc(sizeof(*info), GFP_KERNEL);
+    if (!info) return NULL;
+    memset(info, 0, sizeof(*info));
+    link = &info->link; link->priv = info;
+    link->release.function = &fdomain_release;
+    link->release.data = (u_long)link;
+
+    link->io.NumPorts1 = 0x10;
+    link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+    link->io.IOAddrLines = 10;
+    link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+    link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
+    if (irq_list[0] == -1)
+	link->irq.IRQInfo2 = irq_mask;
+    else
+	for (i = 0; i < 4; i++)
+	    link->irq.IRQInfo2 |= 1 << irq_list[i];
+    link->conf.Attributes = CONF_ENABLE_IRQ;
+    link->conf.Vcc = 50;
+    link->conf.IntType = INT_MEMORY_AND_IO;
+    link->conf.Present = PRESENT_OPTION;
+
+    /* Register with Card Services */
+    link->next = dev_list;
+    dev_list = link;
+    client_reg.dev_info = &dev_info;
+    client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
+    client_reg.event_handler = &fdomain_event;
+    client_reg.EventMask =
+	CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET |
+	CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+	CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+    client_reg.Version = 0x0210;
+    client_reg.event_callback_args.client_data = link;
+    ret = CardServices(RegisterClient, &link->handle, &client_reg);
+    if (ret != 0) {
+	cs_error(link->handle, RegisterClient, ret);
+	fdomain_detach(link);
+	return NULL;
+    }
+    
+    return link;
+} /* fdomain_attach */
+
+/*====================================================================*/
+
+static void fdomain_detach(dev_link_t *link)
+{
+    dev_link_t **linkp;
+
+    DEBUG(0, "fdomain_detach(0x%p)\n", link);
+    
+    /* Locate device structure */
+    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+	if (*linkp == link) break;
+    if (*linkp == NULL)
+	return;
+
+    if (link->state & DEV_CONFIG) {
+	fdomain_release((u_long)link);
+	if (link->state & DEV_STALE_CONFIG) {
+	    link->state |= DEV_STALE_LINK;
+	    return;
+	}
+    }
+
+    if (link->handle)
+	CardServices(DeregisterClient, link->handle);
+    
+    /* Unlink device structure, free bits */
+    *linkp = link->next;
+    kfree(link->priv);
+    
+} /* fdomain_detach */
+
+/*====================================================================*/
+
+#define CS_CHECK(fn, args...) \
+while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
+
+#define CFG_CHECK(fn, args...) \
+if (CardServices(fn, args) != 0) goto next_entry
+
+static void fdomain_config(dev_link_t *link)
+{
+    client_handle_t handle = link->handle;
+    scsi_info_t *info = link->priv;
+    tuple_t tuple;
+    cisparse_t parse;
+    int i, last_ret, last_fn, ints[3];
+    u_char tuple_data[64];
+    Scsi_Device *dev;
+    dev_node_t *node, **tail;
+    struct Scsi_Host *host;
+
+    DEBUG(0, "fdomain_config(0x%p)\n", link);
+
+    tuple.DesiredTuple = CISTPL_CONFIG;
+    tuple.TupleData = tuple_data;
+    tuple.TupleDataMax = 64;
+    tuple.TupleOffset = 0;
+    CS_CHECK(GetFirstTuple, handle, &tuple);
+    CS_CHECK(GetTupleData, handle, &tuple);
+    CS_CHECK(ParseTuple, handle, &tuple, &parse);
+    link->conf.ConfigBase = parse.config.base;
+
+    /* Configure card */
+    driver_template.module = &__this_module;
+    link->state |= DEV_CONFIG;
+    
+    tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+    CS_CHECK(GetFirstTuple, handle, &tuple);
+    while (1) {
+	CFG_CHECK(GetTupleData, handle, &tuple);
+	CFG_CHECK(ParseTuple, handle, &tuple, &parse);
+	link->conf.ConfigIndex = parse.cftable_entry.index;
+	link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
+	i = CardServices(RequestIO, handle, &link->io);
+	if (i == CS_SUCCESS) break;
+    next_entry:
+	CS_CHECK(GetNextTuple, handle, &tuple);
+    }
+
+    CS_CHECK(RequestIRQ, handle, &link->irq);
+    CS_CHECK(RequestConfiguration, handle, &link->conf);
+    
+    /* A bad hack... */
+    release_region(link->io.BasePort1, link->io.NumPorts1);
+
+    /* Set configuration options for the fdomain driver */
+    ints[0] = 2;
+    ints[1] = link->io.BasePort1;
+    ints[2] = link->irq.AssignedIRQ;
+    fdomain_setup("PCMCIA setup", ints);
+    
+    scsi_register_module(MODULE_SCSI_HA, &driver_template);
+
+    tail = &link->dev;
+    info->ndev = 0;
+    for (host = scsi_hostlist; host; host = host->next)
+	if (host->hostt == &driver_template)
+	    for (dev = host->host_queue; dev; dev = dev->next) {
+	    u_long arg[2], id;
+	    kernel_scsi_ioctl(dev, SCSI_IOCTL_GET_IDLUN, arg);
+	    id = (arg[0]&0x0f) + ((arg[0]>>4)&0xf0) +
+		((arg[0]>>8)&0xf00) + ((arg[0]>>12)&0xf000);
+	    node = &info->node[info->ndev];
+	    node->minor = 0;
+	    switch (dev->type) {
+	    case TYPE_TAPE:
+		node->major = SCSI_TAPE_MAJOR;
+		sprintf(node->dev_name, "st#%04lx", id);
+		break;
+	    case TYPE_DISK:
+	    case TYPE_MOD:
+		node->major = SCSI_DISK0_MAJOR;
+		sprintf(node->dev_name, "sd#%04lx", id);
+		break;
+	    case TYPE_ROM:
+	    case TYPE_WORM:
+		node->major = SCSI_CDROM_MAJOR;
+		sprintf(node->dev_name, "sr#%04lx", id);
+		break;
+	    default:
+		node->major = SCSI_GENERIC_MAJOR;
+		sprintf(node->dev_name, "sg#%04lx", id);
+		break;
+	    }
+	    *tail = node; tail = &node->next;
+	    info->ndev++;
+	}
+    *tail = NULL;
+    if (info->ndev == 0)
+	printk(KERN_INFO "fdomain_cs: no SCSI devices found\n");
+    
+    link->state &= ~DEV_CONFIG_PENDING;
+    return;
+    
+cs_failed:
+    cs_error(link->handle, last_fn, last_ret);
+    fdomain_release((u_long)link);
+    return;
+    
+} /* fdomain_config */
+
+/*====================================================================*/
+
+static void fdomain_release(u_long arg)
+{
+    dev_link_t *link = (dev_link_t *)arg;
+
+    DEBUG(0, "fdomain_release(0x%p)\n", link);
+
+    if (GET_USE_COUNT(&__this_module) != 0) {
+	DEBUG(1, "fdomain_cs: release postponed, "
+	      "device still open\n");
+	link->state |= DEV_STALE_CONFIG;
+	return;
+    }
+
+    scsi_unregister_module(MODULE_SCSI_HA, &driver_template);
+    link->dev = NULL;
+    
+    CardServices(ReleaseConfiguration, link->handle);
+    CardServices(ReleaseIO, link->handle, &link->io);
+    CardServices(ReleaseIRQ, link->handle, &link->irq);
+    
+    link->state &= ~DEV_CONFIG;
+    if (link->state & DEV_STALE_LINK)
+	fdomain_detach(link);
+    
+} /* fdomain_release */
+
+/*====================================================================*/
+
+static int fdomain_event(event_t event, int priority,
+			event_callback_args_t *args)
+{
+    dev_link_t *link = args->client_data;
+
+    DEBUG(1, "fdomain_event(0x%06x)\n", event);
+    
+    switch (event) {
+    case CS_EVENT_CARD_REMOVAL:
+	link->state &= ~DEV_PRESENT;
+	if (link->state & DEV_CONFIG) {
+	    link->release.expires = jiffies + HZ/20;
+	    add_timer(&link->release);
+	}
+	break;
+    case CS_EVENT_CARD_INSERTION:
+	link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+	fdomain_config(link);
+	break;
+    case CS_EVENT_PM_SUSPEND:
+	link->state |= DEV_SUSPEND;
+	/* Fall through... */
+    case CS_EVENT_RESET_PHYSICAL:
+	if (link->state & DEV_CONFIG)
+	    CardServices(ReleaseConfiguration, link->handle);
+	break;
+    case CS_EVENT_PM_RESUME:
+	link->state &= ~DEV_SUSPEND;
+	/* Fall through... */
+    case CS_EVENT_CARD_RESET:
+	if (link->state & DEV_CONFIG) {
+	    CardServices(RequestConfiguration, link->handle, &link->conf);
+	    fdomain_16x0_reset(NULL, 0);
+	}
+	break;
+    }
+    return 0;
+} /* fdomain_event */
+
+/*====================================================================*/
+
+static int __init init_fdomain_cs(void) {
+    servinfo_t serv;
+    DEBUG(0, "%s\n", version);
+    CardServices(GetCardServicesInfo, &serv);
+    if (serv.Revision != CS_RELEASE_CODE) {
+	printk(KERN_NOTICE "fdomain_cs: Card Services release "
+	       "does not match!\n");
+	return -1;
+    }
+    register_pccard_driver(&dev_info, &fdomain_attach, &fdomain_detach);
+    return 0;
+}
+
+static void __exit exit_fdomain_cs(void) {
+    DEBUG(0, "fdomain_cs: unloading\n");
+    unregister_pccard_driver(&dev_info);
+    while (dev_list != NULL)
+	fdomain_detach(dev_list);
+}
+
+module_init(init_fdomain_cs);
+module_exit(exit_fdomain_cs);