324 lines
9.2 KiB
C
324 lines
9.2 KiB
C
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/*======================================================================
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A driver for Future Domain-compatible PCMCIA SCSI cards
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fdomain_cs.c 1.47 2001/10/13 00:08:52
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The contents of this file are subject to the Mozilla Public
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License Version 1.1 (the "License"); you may not use this file
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except in compliance with the License. You may obtain a copy of
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the License at http://www.mozilla.org/MPL/
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Software distributed under the License is distributed on an "AS
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IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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implied. See the License for the specific language governing
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rights and limitations under the License.
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The initial developer of the original code is David A. Hinds
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<dahinds@users.sourceforge.net>. Portions created by David A. Hinds
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are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
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Alternatively, the contents of this file may be used under the
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terms of the GNU General Public License version 2 (the "GPL"), in
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which case the provisions of the GPL are applicable instead of the
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above. If you wish to allow the use of your version of this file
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only under the terms of the GPL and not to allow others to use
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your version of this file under the MPL, indicate your decision
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by deleting the provisions above and replace them with the notice
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and other provisions required by the GPL. If you do not delete
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the provisions above, a recipient may use your version of this
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file under either the MPL or the GPL.
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======================================================================*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/ioport.h>
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#include <scsi/scsi.h>
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#include <linux/major.h>
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#include <linux/blkdev.h>
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#include <scsi/scsi_ioctl.h>
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#include "scsi.h"
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#include <scsi/scsi_host.h>
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#include "fdomain.h"
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#include <pcmcia/version.h>
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#include <pcmcia/cs_types.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ds.h>
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/*====================================================================*/
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/* Module parameters */
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MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
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MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver");
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MODULE_LICENSE("Dual MPL/GPL");
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#ifdef PCMCIA_DEBUG
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static int pc_debug = PCMCIA_DEBUG;
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module_param(pc_debug, int, 0);
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#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
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static char *version =
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"fdomain_cs.c 1.47 2001/10/13 00:08:52 (David Hinds)";
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#else
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#define DEBUG(n, args...)
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#endif
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/*====================================================================*/
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typedef struct scsi_info_t {
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dev_link_t link;
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dev_node_t node;
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struct Scsi_Host *host;
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} scsi_info_t;
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static void fdomain_release(dev_link_t *link);
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static int fdomain_event(event_t event, int priority,
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event_callback_args_t *args);
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static dev_link_t *fdomain_attach(void);
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static void fdomain_detach(dev_link_t *);
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static dev_link_t *dev_list = NULL;
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static dev_info_t dev_info = "fdomain_cs";
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static dev_link_t *fdomain_attach(void)
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{
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scsi_info_t *info;
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client_reg_t client_reg;
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dev_link_t *link;
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int ret;
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DEBUG(0, "fdomain_attach()\n");
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/* Create new SCSI device */
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info = kmalloc(sizeof(*info), GFP_KERNEL);
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if (!info) return NULL;
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memset(info, 0, sizeof(*info));
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link = &info->link; link->priv = info;
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link->io.NumPorts1 = 0x10;
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link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
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link->io.IOAddrLines = 10;
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link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
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link->irq.IRQInfo1 = IRQ_LEVEL_ID;
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link->conf.Attributes = CONF_ENABLE_IRQ;
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link->conf.Vcc = 50;
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link->conf.IntType = INT_MEMORY_AND_IO;
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link->conf.Present = PRESENT_OPTION;
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/* Register with Card Services */
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link->next = dev_list;
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dev_list = link;
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client_reg.dev_info = &dev_info;
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client_reg.event_handler = &fdomain_event;
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client_reg.EventMask =
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CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET |
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CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
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CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
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client_reg.Version = 0x0210;
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client_reg.event_callback_args.client_data = link;
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ret = pcmcia_register_client(&link->handle, &client_reg);
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if (ret != 0) {
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cs_error(link->handle, RegisterClient, ret);
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fdomain_detach(link);
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return NULL;
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}
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return link;
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} /* fdomain_attach */
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/*====================================================================*/
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static void fdomain_detach(dev_link_t *link)
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{
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dev_link_t **linkp;
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DEBUG(0, "fdomain_detach(0x%p)\n", link);
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/* Locate device structure */
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for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
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if (*linkp == link) break;
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if (*linkp == NULL)
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return;
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if (link->state & DEV_CONFIG)
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fdomain_release(link);
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if (link->handle)
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pcmcia_deregister_client(link->handle);
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/* Unlink device structure, free bits */
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*linkp = link->next;
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kfree(link->priv);
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} /* fdomain_detach */
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/*====================================================================*/
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#define CS_CHECK(fn, ret) \
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do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
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static void fdomain_config(dev_link_t *link)
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{
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client_handle_t handle = link->handle;
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scsi_info_t *info = link->priv;
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tuple_t tuple;
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cisparse_t parse;
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int i, last_ret, last_fn;
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u_char tuple_data[64];
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char str[16];
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struct Scsi_Host *host;
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DEBUG(0, "fdomain_config(0x%p)\n", link);
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tuple.DesiredTuple = CISTPL_CONFIG;
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tuple.TupleData = tuple_data;
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tuple.TupleDataMax = 64;
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tuple.TupleOffset = 0;
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CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
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CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
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CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
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link->conf.ConfigBase = parse.config.base;
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/* Configure card */
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link->state |= DEV_CONFIG;
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tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
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CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
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while (1) {
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if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
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pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
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goto next_entry;
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link->conf.ConfigIndex = parse.cftable_entry.index;
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link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
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i = pcmcia_request_io(handle, &link->io);
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if (i == CS_SUCCESS) break;
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next_entry:
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CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
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}
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CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
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CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
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/* A bad hack... */
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release_region(link->io.BasePort1, link->io.NumPorts1);
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/* Set configuration options for the fdomain driver */
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sprintf(str, "%d,%d", link->io.BasePort1, link->irq.AssignedIRQ);
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fdomain_setup(str);
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host = __fdomain_16x0_detect(&fdomain_driver_template);
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if (!host) {
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printk(KERN_INFO "fdomain_cs: no SCSI devices found\n");
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goto cs_failed;
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}
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scsi_add_host(host, NULL); /* XXX handle failure */
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scsi_scan_host(host);
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sprintf(info->node.dev_name, "scsi%d", host->host_no);
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link->dev = &info->node;
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info->host = host;
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link->state &= ~DEV_CONFIG_PENDING;
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return;
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cs_failed:
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cs_error(link->handle, last_fn, last_ret);
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fdomain_release(link);
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return;
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} /* fdomain_config */
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/*====================================================================*/
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static void fdomain_release(dev_link_t *link)
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{
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scsi_info_t *info = link->priv;
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DEBUG(0, "fdomain_release(0x%p)\n", link);
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scsi_remove_host(info->host);
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link->dev = NULL;
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pcmcia_release_configuration(link->handle);
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pcmcia_release_io(link->handle, &link->io);
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pcmcia_release_irq(link->handle, &link->irq);
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scsi_unregister(info->host);
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link->state &= ~DEV_CONFIG;
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}
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/*====================================================================*/
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static int fdomain_event(event_t event, int priority,
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event_callback_args_t *args)
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{
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dev_link_t *link = args->client_data;
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DEBUG(1, "fdomain_event(0x%06x)\n", event);
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switch (event) {
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case CS_EVENT_CARD_REMOVAL:
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link->state &= ~DEV_PRESENT;
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if (link->state & DEV_CONFIG)
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fdomain_release(link);
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break;
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case CS_EVENT_CARD_INSERTION:
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link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
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fdomain_config(link);
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break;
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case CS_EVENT_PM_SUSPEND:
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link->state |= DEV_SUSPEND;
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/* Fall through... */
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case CS_EVENT_RESET_PHYSICAL:
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if (link->state & DEV_CONFIG)
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pcmcia_release_configuration(link->handle);
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break;
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case CS_EVENT_PM_RESUME:
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link->state &= ~DEV_SUSPEND;
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/* Fall through... */
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case CS_EVENT_CARD_RESET:
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if (link->state & DEV_CONFIG) {
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pcmcia_request_configuration(link->handle, &link->conf);
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fdomain_16x0_bus_reset(NULL);
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}
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break;
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}
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return 0;
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} /* fdomain_event */
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static struct pcmcia_driver fdomain_cs_driver = {
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.owner = THIS_MODULE,
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.drv = {
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.name = "fdomain_cs",
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},
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.attach = fdomain_attach,
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.detach = fdomain_detach,
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};
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static int __init init_fdomain_cs(void)
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{
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return pcmcia_register_driver(&fdomain_cs_driver);
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}
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static void __exit exit_fdomain_cs(void)
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{
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pcmcia_unregister_driver(&fdomain_cs_driver);
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BUG_ON(dev_list != NULL);
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}
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module_init(init_fdomain_cs);
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module_exit(exit_fdomain_cs);
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