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![Alan Cox](/assets/img/avatar_default.png)
The requery logic goes off and attempts to read the CIS of empty slots. In most cases this happens not to do any harm - but not all! Add the missing check and also a WARN() to catch any other offenders. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1448 lines
35 KiB
C
1448 lines
35 KiB
C
/*
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* ds.c -- 16-bit PCMCIA core support
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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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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*
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* (C) 1999 David A. Hinds
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* (C) 2003 - 2010 Dominik Brodowski
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/list.h>
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#include <linux/delay.h>
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#include <linux/workqueue.h>
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#include <linux/crc32.h>
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#include <linux/firmware.h>
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#include <linux/kref.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ds.h>
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#include <pcmcia/ss.h>
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#include "cs_internal.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("PCMCIA Driver Services");
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MODULE_LICENSE("GPL");
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/*====================================================================*/
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static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
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{
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const struct pcmcia_device_id *did = p_drv->id_table;
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unsigned int i;
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u32 hash;
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if (!p_drv->probe || !p_drv->remove)
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printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
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"function\n", p_drv->name);
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while (did && did->match_flags) {
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for (i = 0; i < 4; i++) {
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if (!did->prod_id[i])
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continue;
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hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
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if (hash == did->prod_id_hash[i])
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continue;
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printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
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"product string \"%s\": is 0x%x, should "
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"be 0x%x\n", p_drv->name, did->prod_id[i],
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did->prod_id_hash[i], hash);
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printk(KERN_DEBUG "pcmcia: see "
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"Documentation/pcmcia/devicetable.txt for "
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"details\n");
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}
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did++;
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}
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return;
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}
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/*======================================================================*/
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struct pcmcia_dynid {
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struct list_head node;
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struct pcmcia_device_id id;
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};
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/**
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* pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
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* @driver: target device driver
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* @buf: buffer for scanning device ID data
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* @count: input size
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*
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* Adds a new dynamic PCMCIA device ID to this driver,
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* and causes the driver to probe for all devices again.
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*/
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static ssize_t
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pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
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{
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struct pcmcia_dynid *dynid;
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struct pcmcia_driver *pdrv = to_pcmcia_drv(driver);
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__u16 match_flags, manf_id, card_id;
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__u8 func_id, function, device_no;
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__u32 prod_id_hash[4] = {0, 0, 0, 0};
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int fields = 0;
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int retval = 0;
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fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
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&match_flags, &manf_id, &card_id, &func_id, &function, &device_no,
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&prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]);
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if (fields < 6)
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return -EINVAL;
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dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL);
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if (!dynid)
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return -ENOMEM;
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dynid->id.match_flags = match_flags;
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dynid->id.manf_id = manf_id;
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dynid->id.card_id = card_id;
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dynid->id.func_id = func_id;
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dynid->id.function = function;
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dynid->id.device_no = device_no;
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memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4);
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mutex_lock(&pdrv->dynids.lock);
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list_add_tail(&dynid->node, &pdrv->dynids.list);
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mutex_unlock(&pdrv->dynids.lock);
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retval = driver_attach(&pdrv->drv);
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if (retval)
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return retval;
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return count;
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}
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static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id);
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static void
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pcmcia_free_dynids(struct pcmcia_driver *drv)
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{
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struct pcmcia_dynid *dynid, *n;
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mutex_lock(&drv->dynids.lock);
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list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
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list_del(&dynid->node);
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kfree(dynid);
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}
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mutex_unlock(&drv->dynids.lock);
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}
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static int
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pcmcia_create_newid_file(struct pcmcia_driver *drv)
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{
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int error = 0;
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if (drv->probe != NULL)
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error = driver_create_file(&drv->drv, &driver_attr_new_id);
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return error;
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}
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static void
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pcmcia_remove_newid_file(struct pcmcia_driver *drv)
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{
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driver_remove_file(&drv->drv, &driver_attr_new_id);
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}
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/**
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* pcmcia_register_driver - register a PCMCIA driver with the bus core
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* @driver: the &driver being registered
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*
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* Registers a PCMCIA driver with the PCMCIA bus core.
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*/
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int pcmcia_register_driver(struct pcmcia_driver *driver)
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{
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int error;
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if (!driver)
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return -EINVAL;
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pcmcia_check_driver(driver);
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/* initialize common fields */
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driver->drv.bus = &pcmcia_bus_type;
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driver->drv.owner = driver->owner;
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driver->drv.name = driver->name;
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mutex_init(&driver->dynids.lock);
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INIT_LIST_HEAD(&driver->dynids.list);
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pr_debug("registering driver %s\n", driver->name);
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error = driver_register(&driver->drv);
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if (error < 0)
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return error;
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error = pcmcia_create_newid_file(driver);
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if (error)
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driver_unregister(&driver->drv);
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return error;
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}
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EXPORT_SYMBOL(pcmcia_register_driver);
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/**
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* pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
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* @driver: the &driver being unregistered
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*/
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void pcmcia_unregister_driver(struct pcmcia_driver *driver)
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{
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pr_debug("unregistering driver %s\n", driver->name);
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pcmcia_remove_newid_file(driver);
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driver_unregister(&driver->drv);
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pcmcia_free_dynids(driver);
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}
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EXPORT_SYMBOL(pcmcia_unregister_driver);
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/* pcmcia_device handling */
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static struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev)
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{
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struct device *tmp_dev;
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tmp_dev = get_device(&p_dev->dev);
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if (!tmp_dev)
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return NULL;
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return to_pcmcia_dev(tmp_dev);
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}
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static void pcmcia_put_dev(struct pcmcia_device *p_dev)
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{
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if (p_dev)
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put_device(&p_dev->dev);
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}
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static void pcmcia_release_function(struct kref *ref)
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{
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struct config_t *c = container_of(ref, struct config_t, ref);
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pr_debug("releasing config_t\n");
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kfree(c);
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}
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static void pcmcia_release_dev(struct device *dev)
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{
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struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
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int i;
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dev_dbg(dev, "releasing device\n");
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pcmcia_put_socket(p_dev->socket);
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for (i = 0; i < 4; i++)
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kfree(p_dev->prod_id[i]);
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kfree(p_dev->devname);
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kref_put(&p_dev->function_config->ref, pcmcia_release_function);
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kfree(p_dev);
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}
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static int pcmcia_device_probe(struct device *dev)
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{
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struct pcmcia_device *p_dev;
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struct pcmcia_driver *p_drv;
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struct pcmcia_socket *s;
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cistpl_config_t cis_config;
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int ret = 0;
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dev = get_device(dev);
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if (!dev)
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return -ENODEV;
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p_dev = to_pcmcia_dev(dev);
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p_drv = to_pcmcia_drv(dev->driver);
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s = p_dev->socket;
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dev_dbg(dev, "trying to bind to %s\n", p_drv->name);
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if ((!p_drv->probe) || (!p_dev->function_config) ||
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(!try_module_get(p_drv->owner))) {
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ret = -EINVAL;
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goto put_dev;
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}
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/* set up some more device information */
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ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
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&cis_config);
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if (!ret) {
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p_dev->config_base = cis_config.base;
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p_dev->config_regs = cis_config.rmask[0];
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dev_dbg(dev, "base %x, regs %x", p_dev->config_base,
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p_dev->config_regs);
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} else {
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dev_printk(KERN_INFO, dev,
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"pcmcia: could not parse base and rmask0 of CIS\n");
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p_dev->config_base = 0;
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p_dev->config_regs = 0;
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}
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ret = p_drv->probe(p_dev);
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if (ret) {
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dev_dbg(dev, "binding to %s failed with %d\n",
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p_drv->name, ret);
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goto put_module;
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}
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dev_dbg(dev, "%s bound: Vpp %d.%d, idx %x, IRQ %d", p_drv->name,
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p_dev->vpp/10, p_dev->vpp%10, p_dev->config_index, p_dev->irq);
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dev_dbg(dev, "resources: ioport %pR %pR iomem %pR %pR %pR",
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p_dev->resource[0], p_dev->resource[1], p_dev->resource[2],
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p_dev->resource[3], p_dev->resource[4]);
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mutex_lock(&s->ops_mutex);
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if ((s->pcmcia_pfc) &&
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(p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
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pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
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mutex_unlock(&s->ops_mutex);
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put_module:
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if (ret)
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module_put(p_drv->owner);
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put_dev:
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if (ret)
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put_device(dev);
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return ret;
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}
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/*
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* Removes a PCMCIA card from the device tree and socket list.
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*/
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static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
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{
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struct pcmcia_device *p_dev;
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struct pcmcia_device *tmp;
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dev_dbg(leftover ? &leftover->dev : &s->dev,
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"pcmcia_card_remove(%d) %s\n", s->sock,
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leftover ? leftover->devname : "");
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mutex_lock(&s->ops_mutex);
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if (!leftover)
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s->device_count = 0;
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else
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s->device_count = 1;
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mutex_unlock(&s->ops_mutex);
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/* unregister all pcmcia_devices registered with this socket, except leftover */
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list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
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if (p_dev == leftover)
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continue;
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mutex_lock(&s->ops_mutex);
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list_del(&p_dev->socket_device_list);
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mutex_unlock(&s->ops_mutex);
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dev_dbg(&p_dev->dev, "unregistering device\n");
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device_unregister(&p_dev->dev);
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}
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return;
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}
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static int pcmcia_device_remove(struct device *dev)
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{
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struct pcmcia_device *p_dev;
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struct pcmcia_driver *p_drv;
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int i;
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p_dev = to_pcmcia_dev(dev);
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p_drv = to_pcmcia_drv(dev->driver);
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dev_dbg(dev, "removing device\n");
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/* If we're removing the primary module driving a
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* pseudo multi-function card, we need to unbind
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* all devices
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*/
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if ((p_dev->socket->pcmcia_pfc) &&
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(p_dev->socket->device_count > 0) &&
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(p_dev->device_no == 0))
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pcmcia_card_remove(p_dev->socket, p_dev);
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/* detach the "instance" */
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if (!p_drv)
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return 0;
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if (p_drv->remove)
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p_drv->remove(p_dev);
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/* check for proper unloading */
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if (p_dev->_irq || p_dev->_io || p_dev->_locked)
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dev_printk(KERN_INFO, dev,
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"pcmcia: driver %s did not release config properly\n",
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p_drv->name);
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for (i = 0; i < MAX_WIN; i++)
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if (p_dev->_win & CLIENT_WIN_REQ(i))
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dev_printk(KERN_INFO, dev,
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"pcmcia: driver %s did not release window properly\n",
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p_drv->name);
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/* references from pcmcia_probe_device */
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pcmcia_put_dev(p_dev);
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module_put(p_drv->owner);
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return 0;
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}
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/*
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* pcmcia_device_query -- determine information about a pcmcia device
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*/
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static int pcmcia_device_query(struct pcmcia_device *p_dev)
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{
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cistpl_manfid_t manf_id;
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cistpl_funcid_t func_id;
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cistpl_vers_1_t *vers1;
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unsigned int i;
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vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
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if (!vers1)
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return -ENOMEM;
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if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL,
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CISTPL_MANFID, &manf_id)) {
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mutex_lock(&p_dev->socket->ops_mutex);
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p_dev->manf_id = manf_id.manf;
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p_dev->card_id = manf_id.card;
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p_dev->has_manf_id = 1;
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p_dev->has_card_id = 1;
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mutex_unlock(&p_dev->socket->ops_mutex);
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}
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if (!pccard_read_tuple(p_dev->socket, p_dev->func,
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CISTPL_FUNCID, &func_id)) {
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mutex_lock(&p_dev->socket->ops_mutex);
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p_dev->func_id = func_id.func;
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p_dev->has_func_id = 1;
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mutex_unlock(&p_dev->socket->ops_mutex);
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} else {
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/* rule of thumb: cards with no FUNCID, but with
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* common memory device geometry information, are
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* probably memory cards (from pcmcia-cs) */
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cistpl_device_geo_t *devgeo;
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devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
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if (!devgeo) {
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kfree(vers1);
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return -ENOMEM;
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}
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if (!pccard_read_tuple(p_dev->socket, p_dev->func,
|
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CISTPL_DEVICE_GEO, devgeo)) {
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dev_dbg(&p_dev->dev,
|
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"mem device geometry probably means "
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"FUNCID_MEMORY\n");
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mutex_lock(&p_dev->socket->ops_mutex);
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p_dev->func_id = CISTPL_FUNCID_MEMORY;
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p_dev->has_func_id = 1;
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mutex_unlock(&p_dev->socket->ops_mutex);
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}
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kfree(devgeo);
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}
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|
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if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1,
|
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vers1)) {
|
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mutex_lock(&p_dev->socket->ops_mutex);
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for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) {
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char *tmp;
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unsigned int length;
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char *new;
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|
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tmp = vers1->str + vers1->ofs[i];
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|
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length = strlen(tmp) + 1;
|
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if ((length < 2) || (length > 255))
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continue;
|
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|
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new = kmalloc(sizeof(char) * length, GFP_KERNEL);
|
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if (!new)
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continue;
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|
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new = strncpy(new, tmp, length);
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|
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tmp = p_dev->prod_id[i];
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p_dev->prod_id[i] = new;
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kfree(tmp);
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}
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mutex_unlock(&p_dev->socket->ops_mutex);
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}
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|
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kfree(vers1);
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return 0;
|
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}
|
|
|
|
|
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static struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s,
|
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unsigned int function)
|
|
{
|
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struct pcmcia_device *p_dev, *tmp_dev;
|
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int i;
|
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|
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s = pcmcia_get_socket(s);
|
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if (!s)
|
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return NULL;
|
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|
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pr_debug("adding device to %d, function %d\n", s->sock, function);
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|
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p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
|
|
if (!p_dev)
|
|
goto err_put;
|
|
|
|
mutex_lock(&s->ops_mutex);
|
|
p_dev->device_no = (s->device_count++);
|
|
mutex_unlock(&s->ops_mutex);
|
|
|
|
/* max of 2 PFC devices */
|
|
if ((p_dev->device_no >= 2) && (function == 0))
|
|
goto err_free;
|
|
|
|
/* max of 4 devices overall */
|
|
if (p_dev->device_no >= 4)
|
|
goto err_free;
|
|
|
|
p_dev->socket = s;
|
|
p_dev->func = function;
|
|
|
|
p_dev->dev.bus = &pcmcia_bus_type;
|
|
p_dev->dev.parent = s->dev.parent;
|
|
p_dev->dev.release = pcmcia_release_dev;
|
|
/* by default don't allow DMA */
|
|
p_dev->dma_mask = DMA_MASK_NONE;
|
|
p_dev->dev.dma_mask = &p_dev->dma_mask;
|
|
dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no);
|
|
if (!dev_name(&p_dev->dev))
|
|
goto err_free;
|
|
p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev));
|
|
if (!p_dev->devname)
|
|
goto err_free;
|
|
dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname);
|
|
|
|
mutex_lock(&s->ops_mutex);
|
|
|
|
/*
|
|
* p_dev->function_config must be the same for all card functions.
|
|
* Note that this is serialized by ops_mutex, so that only one
|
|
* such struct will be created.
|
|
*/
|
|
list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
|
|
if (p_dev->func == tmp_dev->func) {
|
|
p_dev->function_config = tmp_dev->function_config;
|
|
p_dev->irq = tmp_dev->irq;
|
|
kref_get(&p_dev->function_config->ref);
|
|
}
|
|
|
|
/* Add to the list in pcmcia_bus_socket */
|
|
list_add(&p_dev->socket_device_list, &s->devices_list);
|
|
|
|
if (pcmcia_setup_irq(p_dev))
|
|
dev_warn(&p_dev->dev,
|
|
"IRQ setup failed -- device might not work\n");
|
|
|
|
if (!p_dev->function_config) {
|
|
config_t *c;
|
|
dev_dbg(&p_dev->dev, "creating config_t\n");
|
|
c = kzalloc(sizeof(struct config_t), GFP_KERNEL);
|
|
if (!c) {
|
|
mutex_unlock(&s->ops_mutex);
|
|
goto err_unreg;
|
|
}
|
|
p_dev->function_config = c;
|
|
kref_init(&c->ref);
|
|
for (i = 0; i < MAX_IO_WIN; i++) {
|
|
c->io[i].name = p_dev->devname;
|
|
c->io[i].flags = IORESOURCE_IO;
|
|
}
|
|
for (i = 0; i< MAX_WIN; i++) {
|
|
c->mem[i].name = p_dev->devname;
|
|
c->mem[i].flags = IORESOURCE_MEM;
|
|
}
|
|
}
|
|
for (i = 0; i < MAX_IO_WIN; i++)
|
|
p_dev->resource[i] = &p_dev->function_config->io[i];
|
|
for (; i < (MAX_IO_WIN + MAX_WIN); i++)
|
|
p_dev->resource[i] = &p_dev->function_config->mem[i-MAX_IO_WIN];
|
|
|
|
mutex_unlock(&s->ops_mutex);
|
|
|
|
dev_printk(KERN_NOTICE, &p_dev->dev,
|
|
"pcmcia: registering new device %s (IRQ: %d)\n",
|
|
p_dev->devname, p_dev->irq);
|
|
|
|
pcmcia_device_query(p_dev);
|
|
|
|
if (device_register(&p_dev->dev))
|
|
goto err_unreg;
|
|
|
|
return p_dev;
|
|
|
|
err_unreg:
|
|
mutex_lock(&s->ops_mutex);
|
|
list_del(&p_dev->socket_device_list);
|
|
mutex_unlock(&s->ops_mutex);
|
|
|
|
err_free:
|
|
mutex_lock(&s->ops_mutex);
|
|
s->device_count--;
|
|
mutex_unlock(&s->ops_mutex);
|
|
|
|
for (i = 0; i < 4; i++)
|
|
kfree(p_dev->prod_id[i]);
|
|
kfree(p_dev->devname);
|
|
kfree(p_dev);
|
|
err_put:
|
|
pcmcia_put_socket(s);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static int pcmcia_card_add(struct pcmcia_socket *s)
|
|
{
|
|
cistpl_longlink_mfc_t mfc;
|
|
unsigned int no_funcs, i, no_chains;
|
|
int ret = -EAGAIN;
|
|
|
|
mutex_lock(&s->ops_mutex);
|
|
if (!(s->resource_setup_done)) {
|
|
dev_dbg(&s->dev,
|
|
"no resources available, delaying card_add\n");
|
|
mutex_unlock(&s->ops_mutex);
|
|
return -EAGAIN; /* try again, but later... */
|
|
}
|
|
|
|
if (pcmcia_validate_mem(s)) {
|
|
dev_dbg(&s->dev, "validating mem resources failed, "
|
|
"delaying card_add\n");
|
|
mutex_unlock(&s->ops_mutex);
|
|
return -EAGAIN; /* try again, but later... */
|
|
}
|
|
mutex_unlock(&s->ops_mutex);
|
|
|
|
ret = pccard_validate_cis(s, &no_chains);
|
|
if (ret || !no_chains) {
|
|
dev_dbg(&s->dev, "invalid CIS or invalid resources\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
|
|
no_funcs = mfc.nfn;
|
|
else
|
|
no_funcs = 1;
|
|
s->functions = no_funcs;
|
|
|
|
for (i = 0; i < no_funcs; i++)
|
|
pcmcia_device_add(s, i);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int pcmcia_requery_callback(struct device *dev, void * _data)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
if (!p_dev->dev.driver) {
|
|
dev_dbg(dev, "update device information\n");
|
|
pcmcia_device_query(p_dev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void pcmcia_requery(struct pcmcia_socket *s)
|
|
{
|
|
int has_pfc;
|
|
|
|
if (!(s->state & SOCKET_PRESENT))
|
|
return;
|
|
|
|
if (s->functions == 0) {
|
|
pcmcia_card_add(s);
|
|
return;
|
|
}
|
|
|
|
/* some device information might have changed because of a CIS
|
|
* update or because we can finally read it correctly... so
|
|
* determine it again, overwriting old values if necessary. */
|
|
bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback);
|
|
|
|
/* if the CIS changed, we need to check whether the number of
|
|
* functions changed. */
|
|
if (s->fake_cis) {
|
|
int old_funcs, new_funcs;
|
|
cistpl_longlink_mfc_t mfc;
|
|
|
|
/* does this cis override add or remove functions? */
|
|
old_funcs = s->functions;
|
|
|
|
if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
|
|
&mfc))
|
|
new_funcs = mfc.nfn;
|
|
else
|
|
new_funcs = 1;
|
|
if (old_funcs != new_funcs) {
|
|
/* we need to re-start */
|
|
pcmcia_card_remove(s, NULL);
|
|
s->functions = 0;
|
|
pcmcia_card_add(s);
|
|
}
|
|
}
|
|
|
|
/* If the PCMCIA device consists of two pseudo devices,
|
|
* call pcmcia_device_add() -- which will fail if both
|
|
* devices are already registered. */
|
|
mutex_lock(&s->ops_mutex);
|
|
has_pfc = s->pcmcia_pfc;
|
|
mutex_unlock(&s->ops_mutex);
|
|
if (has_pfc)
|
|
pcmcia_device_add(s, 0);
|
|
|
|
/* we re-scan all devices, not just the ones connected to this
|
|
* socket. This does not matter, though. */
|
|
if (bus_rescan_devices(&pcmcia_bus_type))
|
|
dev_warn(&s->dev, "rescanning the bus failed\n");
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_PCMCIA_LOAD_CIS
|
|
|
|
/**
|
|
* pcmcia_load_firmware - load CIS from userspace if device-provided is broken
|
|
* @dev: the pcmcia device which needs a CIS override
|
|
* @filename: requested filename in /lib/firmware/
|
|
*
|
|
* This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
|
|
* the one provided by the card is broken. The firmware files reside in
|
|
* /lib/firmware/ in userspace.
|
|
*/
|
|
static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
|
|
{
|
|
struct pcmcia_socket *s = dev->socket;
|
|
const struct firmware *fw;
|
|
int ret = -ENOMEM;
|
|
cistpl_longlink_mfc_t mfc;
|
|
int old_funcs, new_funcs = 1;
|
|
|
|
if (!filename)
|
|
return -EINVAL;
|
|
|
|
dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename);
|
|
|
|
if (request_firmware(&fw, filename, &dev->dev) == 0) {
|
|
if (fw->size >= CISTPL_MAX_CIS_SIZE) {
|
|
ret = -EINVAL;
|
|
dev_printk(KERN_ERR, &dev->dev,
|
|
"pcmcia: CIS override is too big\n");
|
|
goto release;
|
|
}
|
|
|
|
if (!pcmcia_replace_cis(s, fw->data, fw->size))
|
|
ret = 0;
|
|
else {
|
|
dev_printk(KERN_ERR, &dev->dev,
|
|
"pcmcia: CIS override failed\n");
|
|
goto release;
|
|
}
|
|
|
|
/* we need to re-start if the number of functions changed */
|
|
old_funcs = s->functions;
|
|
if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
|
|
&mfc))
|
|
new_funcs = mfc.nfn;
|
|
|
|
if (old_funcs != new_funcs)
|
|
ret = -EBUSY;
|
|
|
|
/* update information */
|
|
pcmcia_device_query(dev);
|
|
|
|
/* requery (as number of functions might have changed) */
|
|
pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
|
|
}
|
|
release:
|
|
release_firmware(fw);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#else /* !CONFIG_PCMCIA_LOAD_CIS */
|
|
|
|
static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
static inline int pcmcia_devmatch(struct pcmcia_device *dev,
|
|
const struct pcmcia_device_id *did)
|
|
{
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
|
|
if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
|
|
if ((!dev->has_card_id) || (dev->card_id != did->card_id))
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
|
|
if (dev->func != did->function)
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
|
|
if (!dev->prod_id[0])
|
|
return 0;
|
|
if (strcmp(did->prod_id[0], dev->prod_id[0]))
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
|
|
if (!dev->prod_id[1])
|
|
return 0;
|
|
if (strcmp(did->prod_id[1], dev->prod_id[1]))
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
|
|
if (!dev->prod_id[2])
|
|
return 0;
|
|
if (strcmp(did->prod_id[2], dev->prod_id[2]))
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
|
|
if (!dev->prod_id[3])
|
|
return 0;
|
|
if (strcmp(did->prod_id[3], dev->prod_id[3]))
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
|
|
dev_dbg(&dev->dev, "this is a pseudo-multi-function device\n");
|
|
mutex_lock(&dev->socket->ops_mutex);
|
|
dev->socket->pcmcia_pfc = 1;
|
|
mutex_unlock(&dev->socket->ops_mutex);
|
|
if (dev->device_no != did->device_no)
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
|
|
int ret;
|
|
|
|
if ((!dev->has_func_id) || (dev->func_id != did->func_id))
|
|
return 0;
|
|
|
|
/* if this is a pseudo-multi-function device,
|
|
* we need explicit matches */
|
|
if (dev->socket->pcmcia_pfc)
|
|
return 0;
|
|
if (dev->device_no)
|
|
return 0;
|
|
|
|
/* also, FUNC_ID matching needs to be activated by userspace
|
|
* after it has re-checked that there is no possible module
|
|
* with a prod_id/manf_id/card_id match.
|
|
*/
|
|
mutex_lock(&dev->socket->ops_mutex);
|
|
ret = dev->allow_func_id_match;
|
|
mutex_unlock(&dev->socket->ops_mutex);
|
|
|
|
if (!ret) {
|
|
dev_dbg(&dev->dev,
|
|
"skipping FUNC_ID match until userspace ACK\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
|
|
dev_dbg(&dev->dev, "device needs a fake CIS\n");
|
|
if (!dev->socket->fake_cis)
|
|
if (pcmcia_load_firmware(dev, did->cisfile))
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
|
|
int i;
|
|
for (i = 0; i < 4; i++)
|
|
if (dev->prod_id[i])
|
|
return 0;
|
|
if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
static int pcmcia_bus_match(struct device *dev, struct device_driver *drv)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
struct pcmcia_driver *p_drv = to_pcmcia_drv(drv);
|
|
const struct pcmcia_device_id *did = p_drv->id_table;
|
|
struct pcmcia_dynid *dynid;
|
|
|
|
/* match dynamic devices first */
|
|
mutex_lock(&p_drv->dynids.lock);
|
|
list_for_each_entry(dynid, &p_drv->dynids.list, node) {
|
|
dev_dbg(dev, "trying to match to %s\n", drv->name);
|
|
if (pcmcia_devmatch(p_dev, &dynid->id)) {
|
|
dev_dbg(dev, "matched to %s\n", drv->name);
|
|
mutex_unlock(&p_drv->dynids.lock);
|
|
return 1;
|
|
}
|
|
}
|
|
mutex_unlock(&p_drv->dynids.lock);
|
|
|
|
while (did && did->match_flags) {
|
|
dev_dbg(dev, "trying to match to %s\n", drv->name);
|
|
if (pcmcia_devmatch(p_dev, did)) {
|
|
dev_dbg(dev, "matched to %s\n", drv->name);
|
|
return 1;
|
|
}
|
|
did++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
|
|
{
|
|
struct pcmcia_device *p_dev;
|
|
int i;
|
|
u32 hash[4] = { 0, 0, 0, 0};
|
|
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
p_dev = to_pcmcia_dev(dev);
|
|
|
|
/* calculate hashes */
|
|
for (i = 0; i < 4; i++) {
|
|
if (!p_dev->prod_id[i])
|
|
continue;
|
|
hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
|
|
}
|
|
|
|
if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock))
|
|
return -ENOMEM;
|
|
|
|
if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no))
|
|
return -ENOMEM;
|
|
|
|
if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
|
|
"pa%08Xpb%08Xpc%08Xpd%08X",
|
|
p_dev->has_manf_id ? p_dev->manf_id : 0,
|
|
p_dev->has_card_id ? p_dev->card_id : 0,
|
|
p_dev->has_func_id ? p_dev->func_id : 0,
|
|
p_dev->func,
|
|
p_dev->device_no,
|
|
hash[0],
|
|
hash[1],
|
|
hash[2],
|
|
hash[3]))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/************************ runtime PM support ***************************/
|
|
|
|
static int pcmcia_dev_suspend(struct device *dev, pm_message_t state);
|
|
static int pcmcia_dev_resume(struct device *dev);
|
|
|
|
static int runtime_suspend(struct device *dev)
|
|
{
|
|
int rc;
|
|
|
|
device_lock(dev);
|
|
rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND);
|
|
device_unlock(dev);
|
|
return rc;
|
|
}
|
|
|
|
static int runtime_resume(struct device *dev)
|
|
{
|
|
int rc;
|
|
|
|
device_lock(dev);
|
|
rc = pcmcia_dev_resume(dev);
|
|
device_unlock(dev);
|
|
return rc;
|
|
}
|
|
|
|
/************************ per-device sysfs output ***************************/
|
|
|
|
#define pcmcia_device_attr(field, test, format) \
|
|
static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
|
|
return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \
|
|
} \
|
|
static DEVICE_ATTR_RO(field);
|
|
|
|
#define pcmcia_device_stringattr(name, field) \
|
|
static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
|
|
return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \
|
|
} \
|
|
static DEVICE_ATTR_RO(name);
|
|
|
|
pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
|
|
pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
|
|
pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
|
|
pcmcia_device_stringattr(prod_id1, prod_id[0]);
|
|
pcmcia_device_stringattr(prod_id2, prod_id[1]);
|
|
pcmcia_device_stringattr(prod_id3, prod_id[2]);
|
|
pcmcia_device_stringattr(prod_id4, prod_id[3]);
|
|
|
|
static ssize_t function_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
return p_dev->socket ? sprintf(buf, "0x%02x\n", p_dev->func) : -ENODEV;
|
|
}
|
|
static DEVICE_ATTR_RO(function);
|
|
|
|
static ssize_t resources_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
char *str = buf;
|
|
int i;
|
|
|
|
for (i = 0; i < PCMCIA_NUM_RESOURCES; i++)
|
|
str += sprintf(str, "%pr\n", p_dev->resource[i]);
|
|
|
|
return str - buf;
|
|
}
|
|
static DEVICE_ATTR_RO(resources);
|
|
|
|
static ssize_t pm_state_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
|
|
if (p_dev->suspended)
|
|
return sprintf(buf, "off\n");
|
|
else
|
|
return sprintf(buf, "on\n");
|
|
}
|
|
|
|
static ssize_t pm_state_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
int ret = 0;
|
|
|
|
if (!count)
|
|
return -EINVAL;
|
|
|
|
if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
|
|
ret = runtime_suspend(dev);
|
|
else if (p_dev->suspended && !strncmp(buf, "on", 2))
|
|
ret = runtime_resume(dev);
|
|
|
|
return ret ? ret : count;
|
|
}
|
|
static DEVICE_ATTR_RW(pm_state);
|
|
|
|
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
int i;
|
|
u32 hash[4] = { 0, 0, 0, 0};
|
|
|
|
/* calculate hashes */
|
|
for (i = 0; i < 4; i++) {
|
|
if (!p_dev->prod_id[i])
|
|
continue;
|
|
hash[i] = crc32(0, p_dev->prod_id[i],
|
|
strlen(p_dev->prod_id[i]));
|
|
}
|
|
return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
|
|
"pa%08Xpb%08Xpc%08Xpd%08X\n",
|
|
p_dev->has_manf_id ? p_dev->manf_id : 0,
|
|
p_dev->has_card_id ? p_dev->card_id : 0,
|
|
p_dev->has_func_id ? p_dev->func_id : 0,
|
|
p_dev->func, p_dev->device_no,
|
|
hash[0], hash[1], hash[2], hash[3]);
|
|
}
|
|
static DEVICE_ATTR_RO(modalias);
|
|
|
|
static ssize_t allow_func_id_match_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
|
|
if (!count)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&p_dev->socket->ops_mutex);
|
|
p_dev->allow_func_id_match = 1;
|
|
mutex_unlock(&p_dev->socket->ops_mutex);
|
|
pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY);
|
|
|
|
return count;
|
|
}
|
|
static DEVICE_ATTR_WO(allow_func_id_match);
|
|
|
|
static struct attribute *pcmcia_dev_attrs[] = {
|
|
&dev_attr_resources.attr,
|
|
&dev_attr_pm_state.attr,
|
|
&dev_attr_function.attr,
|
|
&dev_attr_func_id.attr,
|
|
&dev_attr_manf_id.attr,
|
|
&dev_attr_card_id.attr,
|
|
&dev_attr_prod_id1.attr,
|
|
&dev_attr_prod_id2.attr,
|
|
&dev_attr_prod_id3.attr,
|
|
&dev_attr_prod_id4.attr,
|
|
&dev_attr_modalias.attr,
|
|
&dev_attr_allow_func_id_match.attr,
|
|
NULL,
|
|
};
|
|
ATTRIBUTE_GROUPS(pcmcia_dev);
|
|
|
|
/* PM support, also needed for reset */
|
|
|
|
static int pcmcia_dev_suspend(struct device *dev, pm_message_t state)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
struct pcmcia_driver *p_drv = NULL;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&p_dev->socket->ops_mutex);
|
|
if (p_dev->suspended) {
|
|
mutex_unlock(&p_dev->socket->ops_mutex);
|
|
return 0;
|
|
}
|
|
p_dev->suspended = 1;
|
|
mutex_unlock(&p_dev->socket->ops_mutex);
|
|
|
|
dev_dbg(dev, "suspending\n");
|
|
|
|
if (dev->driver)
|
|
p_drv = to_pcmcia_drv(dev->driver);
|
|
|
|
if (!p_drv)
|
|
goto out;
|
|
|
|
if (p_drv->suspend) {
|
|
ret = p_drv->suspend(p_dev);
|
|
if (ret) {
|
|
dev_printk(KERN_ERR, dev,
|
|
"pcmcia: device %s (driver %s) did "
|
|
"not want to go to sleep (%d)\n",
|
|
p_dev->devname, p_drv->name, ret);
|
|
mutex_lock(&p_dev->socket->ops_mutex);
|
|
p_dev->suspended = 0;
|
|
mutex_unlock(&p_dev->socket->ops_mutex);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (p_dev->device_no == p_dev->func) {
|
|
dev_dbg(dev, "releasing configuration\n");
|
|
pcmcia_release_configuration(p_dev);
|
|
}
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int pcmcia_dev_resume(struct device *dev)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
struct pcmcia_driver *p_drv = NULL;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&p_dev->socket->ops_mutex);
|
|
if (!p_dev->suspended) {
|
|
mutex_unlock(&p_dev->socket->ops_mutex);
|
|
return 0;
|
|
}
|
|
p_dev->suspended = 0;
|
|
mutex_unlock(&p_dev->socket->ops_mutex);
|
|
|
|
dev_dbg(dev, "resuming\n");
|
|
|
|
if (dev->driver)
|
|
p_drv = to_pcmcia_drv(dev->driver);
|
|
|
|
if (!p_drv)
|
|
goto out;
|
|
|
|
if (p_dev->device_no == p_dev->func) {
|
|
dev_dbg(dev, "requesting configuration\n");
|
|
ret = pcmcia_enable_device(p_dev);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
if (p_drv->resume)
|
|
ret = p_drv->resume(p_dev);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
|
|
{
|
|
struct pcmcia_socket *skt = _data;
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
|
|
if (p_dev->socket != skt || p_dev->suspended)
|
|
return 0;
|
|
|
|
return runtime_suspend(dev);
|
|
}
|
|
|
|
static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
|
|
{
|
|
struct pcmcia_socket *skt = _data;
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
|
|
if (p_dev->socket != skt || !p_dev->suspended)
|
|
return 0;
|
|
|
|
runtime_resume(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcmcia_bus_resume(struct pcmcia_socket *skt)
|
|
{
|
|
dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock);
|
|
bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
|
|
return 0;
|
|
}
|
|
|
|
static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
|
|
{
|
|
dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock);
|
|
if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
|
|
pcmcia_bus_suspend_callback)) {
|
|
pcmcia_bus_resume(skt);
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int pcmcia_bus_remove(struct pcmcia_socket *skt)
|
|
{
|
|
atomic_set(&skt->present, 0);
|
|
pcmcia_card_remove(skt, NULL);
|
|
|
|
mutex_lock(&skt->ops_mutex);
|
|
destroy_cis_cache(skt);
|
|
pcmcia_cleanup_irq(skt);
|
|
mutex_unlock(&skt->ops_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcmcia_bus_add(struct pcmcia_socket *skt)
|
|
{
|
|
atomic_set(&skt->present, 1);
|
|
|
|
mutex_lock(&skt->ops_mutex);
|
|
skt->pcmcia_pfc = 0;
|
|
destroy_cis_cache(skt); /* to be on the safe side... */
|
|
mutex_unlock(&skt->ops_mutex);
|
|
|
|
pcmcia_card_add(skt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcmcia_bus_early_resume(struct pcmcia_socket *skt)
|
|
{
|
|
if (!verify_cis_cache(skt))
|
|
return 0;
|
|
|
|
dev_dbg(&skt->dev, "cis mismatch - different card\n");
|
|
|
|
/* first, remove the card */
|
|
pcmcia_bus_remove(skt);
|
|
|
|
mutex_lock(&skt->ops_mutex);
|
|
destroy_cis_cache(skt);
|
|
kfree(skt->fake_cis);
|
|
skt->fake_cis = NULL;
|
|
skt->functions = 0;
|
|
mutex_unlock(&skt->ops_mutex);
|
|
|
|
/* now, add the new card */
|
|
pcmcia_bus_add(skt);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* NOTE: This is racy. There's no guarantee the card will still be
|
|
* physically present, even if the call to this function returns
|
|
* non-NULL. Furthermore, the device driver most likely is unbound
|
|
* almost immediately, so the timeframe where pcmcia_dev_present
|
|
* returns NULL is probably really really small.
|
|
*/
|
|
struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev)
|
|
{
|
|
struct pcmcia_device *p_dev;
|
|
struct pcmcia_device *ret = NULL;
|
|
|
|
p_dev = pcmcia_get_dev(_p_dev);
|
|
if (!p_dev)
|
|
return NULL;
|
|
|
|
if (atomic_read(&p_dev->socket->present) != 0)
|
|
ret = p_dev;
|
|
|
|
pcmcia_put_dev(p_dev);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(pcmcia_dev_present);
|
|
|
|
|
|
static struct pcmcia_callback pcmcia_bus_callback = {
|
|
.owner = THIS_MODULE,
|
|
.add = pcmcia_bus_add,
|
|
.remove = pcmcia_bus_remove,
|
|
.requery = pcmcia_requery,
|
|
.validate = pccard_validate_cis,
|
|
.suspend = pcmcia_bus_suspend,
|
|
.early_resume = pcmcia_bus_early_resume,
|
|
.resume = pcmcia_bus_resume,
|
|
};
|
|
|
|
static int pcmcia_bus_add_socket(struct device *dev,
|
|
struct class_interface *class_intf)
|
|
{
|
|
struct pcmcia_socket *socket = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
socket = pcmcia_get_socket(socket);
|
|
if (!socket) {
|
|
dev_printk(KERN_ERR, dev,
|
|
"PCMCIA obtaining reference to socket failed\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
|
|
if (ret) {
|
|
dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
|
|
pcmcia_put_socket(socket);
|
|
return ret;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&socket->devices_list);
|
|
socket->pcmcia_pfc = 0;
|
|
socket->device_count = 0;
|
|
atomic_set(&socket->present, 0);
|
|
|
|
ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
|
|
if (ret) {
|
|
dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
|
|
pcmcia_put_socket(socket);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pcmcia_bus_remove_socket(struct device *dev,
|
|
struct class_interface *class_intf)
|
|
{
|
|
struct pcmcia_socket *socket = dev_get_drvdata(dev);
|
|
|
|
if (!socket)
|
|
return;
|
|
|
|
pccard_register_pcmcia(socket, NULL);
|
|
|
|
/* unregister any unbound devices */
|
|
mutex_lock(&socket->skt_mutex);
|
|
pcmcia_card_remove(socket, NULL);
|
|
release_cis_mem(socket);
|
|
mutex_unlock(&socket->skt_mutex);
|
|
|
|
sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
|
|
|
|
pcmcia_put_socket(socket);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/* the pcmcia_bus_interface is used to handle pcmcia socket devices */
|
|
static struct class_interface pcmcia_bus_interface __refdata = {
|
|
.class = &pcmcia_socket_class,
|
|
.add_dev = &pcmcia_bus_add_socket,
|
|
.remove_dev = &pcmcia_bus_remove_socket,
|
|
};
|
|
|
|
|
|
struct bus_type pcmcia_bus_type = {
|
|
.name = "pcmcia",
|
|
.uevent = pcmcia_bus_uevent,
|
|
.match = pcmcia_bus_match,
|
|
.dev_groups = pcmcia_dev_groups,
|
|
.probe = pcmcia_device_probe,
|
|
.remove = pcmcia_device_remove,
|
|
.suspend = pcmcia_dev_suspend,
|
|
.resume = pcmcia_dev_resume,
|
|
};
|
|
|
|
|
|
static int __init init_pcmcia_bus(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = bus_register(&pcmcia_bus_type);
|
|
if (ret < 0) {
|
|
printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);
|
|
return ret;
|
|
}
|
|
ret = class_interface_register(&pcmcia_bus_interface);
|
|
if (ret < 0) {
|
|
printk(KERN_WARNING
|
|
"pcmcia: class_interface_register error: %d\n", ret);
|
|
bus_unregister(&pcmcia_bus_type);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
|
|
* pcmcia_socket_class is already registered */
|
|
|
|
|
|
static void __exit exit_pcmcia_bus(void)
|
|
{
|
|
class_interface_unregister(&pcmcia_bus_interface);
|
|
|
|
bus_unregister(&pcmcia_bus_type);
|
|
}
|
|
module_exit(exit_pcmcia_bus);
|
|
|
|
|
|
MODULE_ALIAS("ds");
|