![Alan Cox](/assets/img/avatar_default.png)
PCMCIA abuses dev->private_data in the probe methods. Unfortunately it continues to abuse it after calling drv->probe() which leads to crashes and other nasties (such as bogus probes of multifunction devices) giving errors like pcmcia: registering new device pcmcia0.1 kernel: 0.1: GetNextTuple: No more items Extract the passed data before calling the driver probe function that way we don't blow up when the driver reuses dev->private_data as its right. As its close to the final release just move the hack so it works out, hopefully someone will be sufficiently embarrassed to produce a nice rework for 2.6.28. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1584 lines
39 KiB
C
1584 lines
39 KiB
C
/*
|
|
* ds.c -- 16-bit PCMCIA core support
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* The initial developer of the original code is David A. Hinds
|
|
* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
|
|
* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
|
|
*
|
|
* (C) 1999 David A. Hinds
|
|
* (C) 2003 - 2006 Dominik Brodowski
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/list.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/crc32.h>
|
|
#include <linux/firmware.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/dma-mapping.h>
|
|
|
|
#include <pcmcia/cs_types.h>
|
|
#include <pcmcia/cs.h>
|
|
#include <pcmcia/cistpl.h>
|
|
#include <pcmcia/ds.h>
|
|
#include <pcmcia/ss.h>
|
|
|
|
#include "cs_internal.h"
|
|
#include "ds_internal.h"
|
|
|
|
/*====================================================================*/
|
|
|
|
/* Module parameters */
|
|
|
|
MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
|
|
MODULE_DESCRIPTION("PCMCIA Driver Services");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#ifdef DEBUG
|
|
int ds_pc_debug;
|
|
|
|
module_param_named(pc_debug, ds_pc_debug, int, 0644);
|
|
|
|
#define ds_dbg(lvl, fmt, arg...) do { \
|
|
if (ds_pc_debug > (lvl)) \
|
|
printk(KERN_DEBUG "ds: " fmt , ## arg); \
|
|
} while (0)
|
|
#else
|
|
#define ds_dbg(lvl, fmt, arg...) do { } while (0)
|
|
#endif
|
|
|
|
spinlock_t pcmcia_dev_list_lock;
|
|
|
|
/*====================================================================*/
|
|
|
|
/* code which was in cs.c before */
|
|
|
|
/* String tables for error messages */
|
|
|
|
typedef struct lookup_t {
|
|
int key;
|
|
char *msg;
|
|
} lookup_t;
|
|
|
|
static const lookup_t error_table[] = {
|
|
{ CS_SUCCESS, "Operation succeeded" },
|
|
{ CS_BAD_ADAPTER, "Bad adapter" },
|
|
{ CS_BAD_ATTRIBUTE, "Bad attribute", },
|
|
{ CS_BAD_BASE, "Bad base address" },
|
|
{ CS_BAD_EDC, "Bad EDC" },
|
|
{ CS_BAD_IRQ, "Bad IRQ" },
|
|
{ CS_BAD_OFFSET, "Bad offset" },
|
|
{ CS_BAD_PAGE, "Bad page number" },
|
|
{ CS_READ_FAILURE, "Read failure" },
|
|
{ CS_BAD_SIZE, "Bad size" },
|
|
{ CS_BAD_SOCKET, "Bad socket" },
|
|
{ CS_BAD_TYPE, "Bad type" },
|
|
{ CS_BAD_VCC, "Bad Vcc" },
|
|
{ CS_BAD_VPP, "Bad Vpp" },
|
|
{ CS_BAD_WINDOW, "Bad window" },
|
|
{ CS_WRITE_FAILURE, "Write failure" },
|
|
{ CS_NO_CARD, "No card present" },
|
|
{ CS_UNSUPPORTED_FUNCTION, "Usupported function" },
|
|
{ CS_UNSUPPORTED_MODE, "Unsupported mode" },
|
|
{ CS_BAD_SPEED, "Bad speed" },
|
|
{ CS_BUSY, "Resource busy" },
|
|
{ CS_GENERAL_FAILURE, "General failure" },
|
|
{ CS_WRITE_PROTECTED, "Write protected" },
|
|
{ CS_BAD_ARG_LENGTH, "Bad argument length" },
|
|
{ CS_BAD_ARGS, "Bad arguments" },
|
|
{ CS_CONFIGURATION_LOCKED, "Configuration locked" },
|
|
{ CS_IN_USE, "Resource in use" },
|
|
{ CS_NO_MORE_ITEMS, "No more items" },
|
|
{ CS_OUT_OF_RESOURCE, "Out of resource" },
|
|
{ CS_BAD_HANDLE, "Bad handle" },
|
|
{ CS_BAD_TUPLE, "Bad CIS tuple" }
|
|
};
|
|
|
|
|
|
static const lookup_t service_table[] = {
|
|
{ AccessConfigurationRegister, "AccessConfigurationRegister" },
|
|
{ AddSocketServices, "AddSocketServices" },
|
|
{ AdjustResourceInfo, "AdjustResourceInfo" },
|
|
{ CheckEraseQueue, "CheckEraseQueue" },
|
|
{ CloseMemory, "CloseMemory" },
|
|
{ DeregisterClient, "DeregisterClient" },
|
|
{ DeregisterEraseQueue, "DeregisterEraseQueue" },
|
|
{ GetCardServicesInfo, "GetCardServicesInfo" },
|
|
{ GetClientInfo, "GetClientInfo" },
|
|
{ GetConfigurationInfo, "GetConfigurationInfo" },
|
|
{ GetEventMask, "GetEventMask" },
|
|
{ GetFirstClient, "GetFirstClient" },
|
|
{ GetFirstRegion, "GetFirstRegion" },
|
|
{ GetFirstTuple, "GetFirstTuple" },
|
|
{ GetNextClient, "GetNextClient" },
|
|
{ GetNextRegion, "GetNextRegion" },
|
|
{ GetNextTuple, "GetNextTuple" },
|
|
{ GetStatus, "GetStatus" },
|
|
{ GetTupleData, "GetTupleData" },
|
|
{ MapMemPage, "MapMemPage" },
|
|
{ ModifyConfiguration, "ModifyConfiguration" },
|
|
{ ModifyWindow, "ModifyWindow" },
|
|
{ OpenMemory, "OpenMemory" },
|
|
{ ParseTuple, "ParseTuple" },
|
|
{ ReadMemory, "ReadMemory" },
|
|
{ RegisterClient, "RegisterClient" },
|
|
{ RegisterEraseQueue, "RegisterEraseQueue" },
|
|
{ RegisterMTD, "RegisterMTD" },
|
|
{ ReleaseConfiguration, "ReleaseConfiguration" },
|
|
{ ReleaseIO, "ReleaseIO" },
|
|
{ ReleaseIRQ, "ReleaseIRQ" },
|
|
{ ReleaseWindow, "ReleaseWindow" },
|
|
{ RequestConfiguration, "RequestConfiguration" },
|
|
{ RequestIO, "RequestIO" },
|
|
{ RequestIRQ, "RequestIRQ" },
|
|
{ RequestSocketMask, "RequestSocketMask" },
|
|
{ RequestWindow, "RequestWindow" },
|
|
{ ResetCard, "ResetCard" },
|
|
{ SetEventMask, "SetEventMask" },
|
|
{ ValidateCIS, "ValidateCIS" },
|
|
{ WriteMemory, "WriteMemory" },
|
|
{ BindDevice, "BindDevice" },
|
|
{ BindMTD, "BindMTD" },
|
|
{ ReportError, "ReportError" },
|
|
{ SuspendCard, "SuspendCard" },
|
|
{ ResumeCard, "ResumeCard" },
|
|
{ EjectCard, "EjectCard" },
|
|
{ InsertCard, "InsertCard" },
|
|
{ ReplaceCIS, "ReplaceCIS" }
|
|
};
|
|
|
|
|
|
static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err)
|
|
{
|
|
int i;
|
|
char *serv;
|
|
|
|
if (!p_dev)
|
|
printk(KERN_NOTICE);
|
|
else
|
|
printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(service_table); i++)
|
|
if (service_table[i].key == err->func)
|
|
break;
|
|
if (i < ARRAY_SIZE(service_table))
|
|
serv = service_table[i].msg;
|
|
else
|
|
serv = "Unknown service number";
|
|
|
|
for (i = 0; i < ARRAY_SIZE(error_table); i++)
|
|
if (error_table[i].key == err->retcode)
|
|
break;
|
|
if (i < ARRAY_SIZE(error_table))
|
|
printk("%s: %s\n", serv, error_table[i].msg);
|
|
else
|
|
printk("%s: Unknown error code %#x\n", serv, err->retcode);
|
|
|
|
return CS_SUCCESS;
|
|
} /* report_error */
|
|
|
|
/* end of code which was in cs.c before */
|
|
|
|
/*======================================================================*/
|
|
|
|
void cs_error(struct pcmcia_device *p_dev, int func, int ret)
|
|
{
|
|
error_info_t err = { func, ret };
|
|
pcmcia_report_error(p_dev, &err);
|
|
}
|
|
EXPORT_SYMBOL(cs_error);
|
|
|
|
|
|
static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
|
|
{
|
|
struct pcmcia_device_id *did = p_drv->id_table;
|
|
unsigned int i;
|
|
u32 hash;
|
|
|
|
if (!p_drv->probe || !p_drv->remove)
|
|
printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
|
|
"function\n", p_drv->drv.name);
|
|
|
|
while (did && did->match_flags) {
|
|
for (i=0; i<4; i++) {
|
|
if (!did->prod_id[i])
|
|
continue;
|
|
|
|
hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
|
|
if (hash == did->prod_id_hash[i])
|
|
continue;
|
|
|
|
printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
|
|
"product string \"%s\": is 0x%x, should "
|
|
"be 0x%x\n", p_drv->drv.name, did->prod_id[i],
|
|
did->prod_id_hash[i], hash);
|
|
printk(KERN_DEBUG "pcmcia: see "
|
|
"Documentation/pcmcia/devicetable.txt for "
|
|
"details\n");
|
|
}
|
|
did++;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*======================================================================*/
|
|
|
|
|
|
struct pcmcia_dynid {
|
|
struct list_head node;
|
|
struct pcmcia_device_id id;
|
|
};
|
|
|
|
/**
|
|
* pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
|
|
* @driver: target device driver
|
|
* @buf: buffer for scanning device ID data
|
|
* @count: input size
|
|
*
|
|
* Adds a new dynamic PCMCIA device ID to this driver,
|
|
* and causes the driver to probe for all devices again.
|
|
*/
|
|
static ssize_t
|
|
pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
|
|
{
|
|
struct pcmcia_dynid *dynid;
|
|
struct pcmcia_driver *pdrv = to_pcmcia_drv(driver);
|
|
__u16 match_flags, manf_id, card_id;
|
|
__u8 func_id, function, device_no;
|
|
__u32 prod_id_hash[4] = {0, 0, 0, 0};
|
|
int fields=0;
|
|
int retval = 0;
|
|
|
|
fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
|
|
&match_flags, &manf_id, &card_id, &func_id, &function, &device_no,
|
|
&prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]);
|
|
if (fields < 6)
|
|
return -EINVAL;
|
|
|
|
dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL);
|
|
if (!dynid)
|
|
return -ENOMEM;
|
|
|
|
INIT_LIST_HEAD(&dynid->node);
|
|
dynid->id.match_flags = match_flags;
|
|
dynid->id.manf_id = manf_id;
|
|
dynid->id.card_id = card_id;
|
|
dynid->id.func_id = func_id;
|
|
dynid->id.function = function;
|
|
dynid->id.device_no = device_no;
|
|
memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4);
|
|
|
|
spin_lock(&pdrv->dynids.lock);
|
|
list_add_tail(&pdrv->dynids.list, &dynid->node);
|
|
spin_unlock(&pdrv->dynids.lock);
|
|
|
|
if (get_driver(&pdrv->drv)) {
|
|
retval = driver_attach(&pdrv->drv);
|
|
put_driver(&pdrv->drv);
|
|
}
|
|
|
|
if (retval)
|
|
return retval;
|
|
return count;
|
|
}
|
|
static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id);
|
|
|
|
static void
|
|
pcmcia_free_dynids(struct pcmcia_driver *drv)
|
|
{
|
|
struct pcmcia_dynid *dynid, *n;
|
|
|
|
spin_lock(&drv->dynids.lock);
|
|
list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
|
|
list_del(&dynid->node);
|
|
kfree(dynid);
|
|
}
|
|
spin_unlock(&drv->dynids.lock);
|
|
}
|
|
|
|
static int
|
|
pcmcia_create_newid_file(struct pcmcia_driver *drv)
|
|
{
|
|
int error = 0;
|
|
if (drv->probe != NULL)
|
|
error = driver_create_file(&drv->drv, &driver_attr_new_id);
|
|
return error;
|
|
}
|
|
|
|
|
|
/**
|
|
* pcmcia_register_driver - register a PCMCIA driver with the bus core
|
|
* @driver: the &driver being registered
|
|
*
|
|
* Registers a PCMCIA driver with the PCMCIA bus core.
|
|
*/
|
|
int pcmcia_register_driver(struct pcmcia_driver *driver)
|
|
{
|
|
int error;
|
|
|
|
if (!driver)
|
|
return -EINVAL;
|
|
|
|
pcmcia_check_driver(driver);
|
|
|
|
/* initialize common fields */
|
|
driver->drv.bus = &pcmcia_bus_type;
|
|
driver->drv.owner = driver->owner;
|
|
spin_lock_init(&driver->dynids.lock);
|
|
INIT_LIST_HEAD(&driver->dynids.list);
|
|
|
|
ds_dbg(3, "registering driver %s\n", driver->drv.name);
|
|
|
|
error = driver_register(&driver->drv);
|
|
if (error < 0)
|
|
return error;
|
|
|
|
error = pcmcia_create_newid_file(driver);
|
|
if (error)
|
|
driver_unregister(&driver->drv);
|
|
|
|
return error;
|
|
}
|
|
EXPORT_SYMBOL(pcmcia_register_driver);
|
|
|
|
/**
|
|
* pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
|
|
* @driver: the &driver being unregistered
|
|
*/
|
|
void pcmcia_unregister_driver(struct pcmcia_driver *driver)
|
|
{
|
|
ds_dbg(3, "unregistering driver %s\n", driver->drv.name);
|
|
driver_unregister(&driver->drv);
|
|
pcmcia_free_dynids(driver);
|
|
}
|
|
EXPORT_SYMBOL(pcmcia_unregister_driver);
|
|
|
|
|
|
/* pcmcia_device handling */
|
|
|
|
struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
|
|
{
|
|
struct device *tmp_dev;
|
|
tmp_dev = get_device(&p_dev->dev);
|
|
if (!tmp_dev)
|
|
return NULL;
|
|
return to_pcmcia_dev(tmp_dev);
|
|
}
|
|
|
|
void pcmcia_put_dev(struct pcmcia_device *p_dev)
|
|
{
|
|
if (p_dev)
|
|
put_device(&p_dev->dev);
|
|
}
|
|
|
|
static void pcmcia_release_function(struct kref *ref)
|
|
{
|
|
struct config_t *c = container_of(ref, struct config_t, ref);
|
|
ds_dbg(1, "releasing config_t\n");
|
|
kfree(c);
|
|
}
|
|
|
|
static void pcmcia_release_dev(struct device *dev)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
ds_dbg(1, "releasing device %s\n", p_dev->dev.bus_id);
|
|
pcmcia_put_socket(p_dev->socket);
|
|
kfree(p_dev->devname);
|
|
kref_put(&p_dev->function_config->ref, pcmcia_release_function);
|
|
kfree(p_dev);
|
|
}
|
|
|
|
static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc)
|
|
{
|
|
if (!s->pcmcia_state.device_add_pending) {
|
|
ds_dbg(1, "scheduling to add %s secondary"
|
|
" device to %d\n", mfc ? "mfc" : "pfc", s->sock);
|
|
s->pcmcia_state.device_add_pending = 1;
|
|
s->pcmcia_state.mfc_pfc = mfc;
|
|
schedule_work(&s->device_add);
|
|
}
|
|
return;
|
|
}
|
|
|
|
static int pcmcia_device_probe(struct device * dev)
|
|
{
|
|
struct pcmcia_device *p_dev;
|
|
struct pcmcia_driver *p_drv;
|
|
struct pcmcia_device_id *did;
|
|
struct pcmcia_socket *s;
|
|
cistpl_config_t cis_config;
|
|
int ret = 0;
|
|
|
|
dev = get_device(dev);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
p_dev = to_pcmcia_dev(dev);
|
|
p_drv = to_pcmcia_drv(dev->driver);
|
|
s = p_dev->socket;
|
|
|
|
/* The PCMCIA code passes the match data in via dev->driver_data
|
|
* which is an ugly hack. Once the driver probe is called it may
|
|
* and often will overwrite the match data so we must save it first
|
|
*
|
|
* handle pseudo multifunction devices:
|
|
* there are at most two pseudo multifunction devices.
|
|
* if we're matching against the first, schedule a
|
|
* call which will then check whether there are two
|
|
* pseudo devices, and if not, add the second one.
|
|
*/
|
|
did = p_dev->dev.driver_data;
|
|
|
|
ds_dbg(1, "trying to bind %s to %s\n", p_dev->dev.bus_id,
|
|
p_drv->drv.name);
|
|
|
|
if ((!p_drv->probe) || (!p_dev->function_config) ||
|
|
(!try_module_get(p_drv->owner))) {
|
|
ret = -EINVAL;
|
|
goto put_dev;
|
|
}
|
|
|
|
/* set up some more device information */
|
|
ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
|
|
&cis_config);
|
|
if (!ret) {
|
|
p_dev->conf.ConfigBase = cis_config.base;
|
|
p_dev->conf.Present = cis_config.rmask[0];
|
|
} else {
|
|
printk(KERN_INFO "pcmcia: could not parse base and rmask0 of CIS\n");
|
|
p_dev->conf.ConfigBase = 0;
|
|
p_dev->conf.Present = 0;
|
|
}
|
|
|
|
ret = p_drv->probe(p_dev);
|
|
if (ret) {
|
|
ds_dbg(1, "binding %s to %s failed with %d\n",
|
|
p_dev->dev.bus_id, p_drv->drv.name, ret);
|
|
goto put_module;
|
|
}
|
|
|
|
if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
|
|
(p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
|
|
pcmcia_add_device_later(p_dev->socket, 0);
|
|
|
|
put_module:
|
|
if (ret)
|
|
module_put(p_drv->owner);
|
|
put_dev:
|
|
if (ret)
|
|
put_device(dev);
|
|
return (ret);
|
|
}
|
|
|
|
|
|
/*
|
|
* Removes a PCMCIA card from the device tree and socket list.
|
|
*/
|
|
static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
|
|
{
|
|
struct pcmcia_device *p_dev;
|
|
struct pcmcia_device *tmp;
|
|
unsigned long flags;
|
|
|
|
ds_dbg(2, "pcmcia_card_remove(%d) %s\n", s->sock,
|
|
leftover ? leftover->devname : "");
|
|
|
|
if (!leftover)
|
|
s->device_count = 0;
|
|
else
|
|
s->device_count = 1;
|
|
|
|
/* unregister all pcmcia_devices registered with this socket, except leftover */
|
|
list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
|
|
if (p_dev == leftover)
|
|
continue;
|
|
|
|
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
|
|
list_del(&p_dev->socket_device_list);
|
|
p_dev->_removed=1;
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
|
|
ds_dbg(2, "unregistering device %s\n", p_dev->dev.bus_id);
|
|
device_unregister(&p_dev->dev);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static int pcmcia_device_remove(struct device * dev)
|
|
{
|
|
struct pcmcia_device *p_dev;
|
|
struct pcmcia_driver *p_drv;
|
|
struct pcmcia_device_id *did;
|
|
int i;
|
|
|
|
p_dev = to_pcmcia_dev(dev);
|
|
p_drv = to_pcmcia_drv(dev->driver);
|
|
|
|
ds_dbg(1, "removing device %s\n", p_dev->dev.bus_id);
|
|
|
|
/* If we're removing the primary module driving a
|
|
* pseudo multi-function card, we need to unbind
|
|
* all devices
|
|
*/
|
|
did = p_dev->dev.driver_data;
|
|
if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
|
|
(p_dev->socket->device_count != 0) &&
|
|
(p_dev->device_no == 0))
|
|
pcmcia_card_remove(p_dev->socket, p_dev);
|
|
|
|
/* detach the "instance" */
|
|
if (!p_drv)
|
|
return 0;
|
|
|
|
if (p_drv->remove)
|
|
p_drv->remove(p_dev);
|
|
|
|
p_dev->dev_node = NULL;
|
|
|
|
/* check for proper unloading */
|
|
if (p_dev->_irq || p_dev->_io || p_dev->_locked)
|
|
printk(KERN_INFO "pcmcia: driver %s did not release config properly\n",
|
|
p_drv->drv.name);
|
|
|
|
for (i = 0; i < MAX_WIN; i++)
|
|
if (p_dev->_win & CLIENT_WIN_REQ(i))
|
|
printk(KERN_INFO "pcmcia: driver %s did not release windows properly\n",
|
|
p_drv->drv.name);
|
|
|
|
/* references from pcmcia_probe_device */
|
|
pcmcia_put_dev(p_dev);
|
|
module_put(p_drv->owner);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* pcmcia_device_query -- determine information about a pcmcia device
|
|
*/
|
|
static int pcmcia_device_query(struct pcmcia_device *p_dev)
|
|
{
|
|
cistpl_manfid_t manf_id;
|
|
cistpl_funcid_t func_id;
|
|
cistpl_vers_1_t *vers1;
|
|
unsigned int i;
|
|
|
|
vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
|
|
if (!vers1)
|
|
return -ENOMEM;
|
|
|
|
if (!pccard_read_tuple(p_dev->socket, p_dev->func,
|
|
CISTPL_MANFID, &manf_id)) {
|
|
p_dev->manf_id = manf_id.manf;
|
|
p_dev->card_id = manf_id.card;
|
|
p_dev->has_manf_id = 1;
|
|
p_dev->has_card_id = 1;
|
|
}
|
|
|
|
if (!pccard_read_tuple(p_dev->socket, p_dev->func,
|
|
CISTPL_FUNCID, &func_id)) {
|
|
p_dev->func_id = func_id.func;
|
|
p_dev->has_func_id = 1;
|
|
} else {
|
|
/* rule of thumb: cards with no FUNCID, but with
|
|
* common memory device geometry information, are
|
|
* probably memory cards (from pcmcia-cs) */
|
|
cistpl_device_geo_t *devgeo;
|
|
|
|
devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
|
|
if (!devgeo) {
|
|
kfree(vers1);
|
|
return -ENOMEM;
|
|
}
|
|
if (!pccard_read_tuple(p_dev->socket, p_dev->func,
|
|
CISTPL_DEVICE_GEO, devgeo)) {
|
|
ds_dbg(0, "mem device geometry probably means "
|
|
"FUNCID_MEMORY\n");
|
|
p_dev->func_id = CISTPL_FUNCID_MEMORY;
|
|
p_dev->has_func_id = 1;
|
|
}
|
|
kfree(devgeo);
|
|
}
|
|
|
|
if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
|
|
vers1)) {
|
|
for (i=0; i < vers1->ns; i++) {
|
|
char *tmp;
|
|
unsigned int length;
|
|
|
|
tmp = vers1->str + vers1->ofs[i];
|
|
|
|
length = strlen(tmp) + 1;
|
|
if ((length < 2) || (length > 255))
|
|
continue;
|
|
|
|
p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
|
|
GFP_KERNEL);
|
|
if (!p_dev->prod_id[i])
|
|
continue;
|
|
|
|
p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
|
|
tmp, length);
|
|
}
|
|
}
|
|
|
|
kfree(vers1);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* device_add_lock is needed to avoid double registration by cardmgr and kernel.
|
|
* Serializes pcmcia_device_add; will most likely be removed in future.
|
|
*
|
|
* While it has the caveat that adding new PCMCIA devices inside(!) device_register()
|
|
* won't work, this doesn't matter much at the moment: the driver core doesn't
|
|
* support it either.
|
|
*/
|
|
static DEFINE_MUTEX(device_add_lock);
|
|
|
|
struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
|
|
{
|
|
struct pcmcia_device *p_dev, *tmp_dev;
|
|
unsigned long flags;
|
|
int bus_id_len;
|
|
|
|
s = pcmcia_get_socket(s);
|
|
if (!s)
|
|
return NULL;
|
|
|
|
mutex_lock(&device_add_lock);
|
|
|
|
ds_dbg(3, "adding device to %d, function %d\n", s->sock, function);
|
|
|
|
/* max of 4 devices per card */
|
|
if (s->device_count == 4)
|
|
goto err_put;
|
|
|
|
p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
|
|
if (!p_dev)
|
|
goto err_put;
|
|
|
|
p_dev->socket = s;
|
|
p_dev->device_no = (s->device_count++);
|
|
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;
|
|
bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
|
|
|
|
p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL);
|
|
if (!p_dev->devname)
|
|
goto err_free;
|
|
sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
|
|
ds_dbg(3, "devname is %s\n", p_dev->devname);
|
|
|
|
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
|
|
|
|
/*
|
|
* p_dev->function_config must be the same for all card functions.
|
|
* Note that this is serialized by the device_add_lock, 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;
|
|
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);
|
|
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
|
|
if (!p_dev->function_config) {
|
|
ds_dbg(3, "creating config_t for %s\n", p_dev->dev.bus_id);
|
|
p_dev->function_config = kzalloc(sizeof(struct config_t),
|
|
GFP_KERNEL);
|
|
if (!p_dev->function_config)
|
|
goto err_unreg;
|
|
kref_init(&p_dev->function_config->ref);
|
|
}
|
|
|
|
printk(KERN_NOTICE "pcmcia: registering new device %s\n",
|
|
p_dev->devname);
|
|
|
|
pcmcia_device_query(p_dev);
|
|
|
|
if (device_register(&p_dev->dev))
|
|
goto err_unreg;
|
|
|
|
mutex_unlock(&device_add_lock);
|
|
|
|
return p_dev;
|
|
|
|
err_unreg:
|
|
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
|
|
list_del(&p_dev->socket_device_list);
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
|
|
err_free:
|
|
kfree(p_dev->devname);
|
|
kfree(p_dev);
|
|
s->device_count--;
|
|
err_put:
|
|
mutex_unlock(&device_add_lock);
|
|
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 = 0;
|
|
|
|
if (!(s->resource_setup_done)) {
|
|
ds_dbg(3, "no resources available, delaying card_add\n");
|
|
return -EAGAIN; /* try again, but later... */
|
|
}
|
|
|
|
if (pcmcia_validate_mem(s)) {
|
|
ds_dbg(3, "validating mem resources failed, "
|
|
"delaying card_add\n");
|
|
return -EAGAIN; /* try again, but later... */
|
|
}
|
|
|
|
ret = pccard_validate_cis(s, BIND_FN_ALL, &no_chains);
|
|
if (ret || !no_chains) {
|
|
ds_dbg(0, "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 void pcmcia_delayed_add_device(struct work_struct *work)
|
|
{
|
|
struct pcmcia_socket *s =
|
|
container_of(work, struct pcmcia_socket, device_add);
|
|
ds_dbg(1, "adding additional device to %d\n", s->sock);
|
|
pcmcia_device_add(s, s->pcmcia_state.mfc_pfc);
|
|
s->pcmcia_state.device_add_pending = 0;
|
|
s->pcmcia_state.mfc_pfc = 0;
|
|
}
|
|
|
|
static int pcmcia_requery(struct device *dev, void * _data)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
if (!p_dev->dev.driver) {
|
|
ds_dbg(1, "update device information for %s\n",
|
|
p_dev->dev.bus_id);
|
|
pcmcia_device_query(p_dev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis)
|
|
{
|
|
int no_devices = 0;
|
|
int ret = 0;
|
|
unsigned long flags;
|
|
|
|
/* must be called with skt_mutex held */
|
|
ds_dbg(0, "re-scanning socket %d\n", skt->sock);
|
|
|
|
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
|
|
if (list_empty(&skt->devices_list))
|
|
no_devices = 1;
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
|
|
/* If this is because of a CIS override, start over */
|
|
if (new_cis && !no_devices)
|
|
pcmcia_card_remove(skt, NULL);
|
|
|
|
/* if no devices were added for this socket yet because of
|
|
* missing resource information or other trouble, we need to
|
|
* do this now. */
|
|
if (no_devices || new_cis) {
|
|
ret = pcmcia_card_add(skt);
|
|
if (ret)
|
|
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);
|
|
|
|
/* we re-scan all devices, not just the ones connected to this
|
|
* socket. This does not matter, though. */
|
|
ret = bus_rescan_devices(&pcmcia_bus_type);
|
|
if (ret)
|
|
printk(KERN_INFO "pcmcia: bus_rescan_devices 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;
|
|
char path[FIRMWARE_NAME_MAX];
|
|
int ret = -ENOMEM;
|
|
int no_funcs;
|
|
int old_funcs;
|
|
cisdump_t *cis;
|
|
cistpl_longlink_mfc_t mfc;
|
|
|
|
if (!filename)
|
|
return -EINVAL;
|
|
|
|
ds_dbg(1, "trying to load CIS file %s\n", filename);
|
|
|
|
if (strlen(filename) > (FIRMWARE_NAME_MAX - 1)) {
|
|
printk(KERN_WARNING "pcmcia: CIS filename is too long [%s]\n",
|
|
filename);
|
|
return -EINVAL;
|
|
}
|
|
|
|
snprintf(path, sizeof(path), "%s", filename);
|
|
|
|
if (request_firmware(&fw, path, &dev->dev) == 0) {
|
|
if (fw->size >= CISTPL_MAX_CIS_SIZE) {
|
|
ret = -EINVAL;
|
|
printk(KERN_ERR "pcmcia: CIS override is too big\n");
|
|
goto release;
|
|
}
|
|
|
|
cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL);
|
|
if (!cis) {
|
|
ret = -ENOMEM;
|
|
goto release;
|
|
}
|
|
|
|
cis->Length = fw->size + 1;
|
|
memcpy(cis->Data, fw->data, fw->size);
|
|
|
|
if (!pcmcia_replace_cis(s, cis))
|
|
ret = 0;
|
|
else {
|
|
printk(KERN_ERR "pcmcia: CIS override failed\n");
|
|
goto release;
|
|
}
|
|
|
|
|
|
/* update information */
|
|
pcmcia_device_query(dev);
|
|
|
|
/* does this cis override add or remove functions? */
|
|
old_funcs = s->functions;
|
|
|
|
if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
|
|
no_funcs = mfc.nfn;
|
|
else
|
|
no_funcs = 1;
|
|
s->functions = no_funcs;
|
|
|
|
if (old_funcs > no_funcs)
|
|
pcmcia_card_remove(s, dev);
|
|
else if (no_funcs > old_funcs)
|
|
pcmcia_add_device_later(s, 1);
|
|
}
|
|
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,
|
|
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) {
|
|
if (dev->device_no != did->device_no)
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
|
|
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 (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
|
|
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.
|
|
*/
|
|
ds_dbg(0, "skipping FUNC_ID match for %s until userspace "
|
|
"interaction\n", dev->dev.bus_id);
|
|
if (!dev->allow_func_id_match)
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
|
|
ds_dbg(0, "device %s needs a fake CIS\n", dev->dev.bus_id);
|
|
if (!dev->socket->fake_cis)
|
|
pcmcia_load_firmware(dev, did->cisfile);
|
|
|
|
if (!dev->socket->fake_cis)
|
|
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;
|
|
}
|
|
|
|
dev->dev.driver_data = (void *) did;
|
|
|
|
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);
|
|
struct pcmcia_device_id *did = p_drv->id_table;
|
|
struct pcmcia_dynid *dynid;
|
|
|
|
/* match dynamic devices first */
|
|
spin_lock(&p_drv->dynids.lock);
|
|
list_for_each_entry(dynid, &p_drv->dynids.list, node) {
|
|
ds_dbg(3, "trying to match %s to %s\n", dev->bus_id,
|
|
drv->name);
|
|
if (pcmcia_devmatch(p_dev, &dynid->id)) {
|
|
ds_dbg(0, "matched %s to %s\n", dev->bus_id,
|
|
drv->name);
|
|
spin_unlock(&p_drv->dynids.lock);
|
|
return 1;
|
|
}
|
|
}
|
|
spin_unlock(&p_drv->dynids.lock);
|
|
|
|
#ifdef CONFIG_PCMCIA_IOCTL
|
|
/* matching by cardmgr */
|
|
if (p_dev->cardmgr == p_drv) {
|
|
ds_dbg(0, "cardmgr matched %s to %s\n", dev->bus_id,
|
|
drv->name);
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
while (did && did->match_flags) {
|
|
ds_dbg(3, "trying to match %s to %s\n", dev->bus_id,
|
|
drv->name);
|
|
if (pcmcia_devmatch(p_dev, did)) {
|
|
ds_dbg(0, "matched %s to %s\n", dev->bus_id,
|
|
drv->name);
|
|
return 1;
|
|
}
|
|
did++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_HOTPLUG
|
|
|
|
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;
|
|
}
|
|
|
|
#else
|
|
|
|
static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
#endif
|
|
|
|
/************************ 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;
|
|
|
|
down(&dev->sem);
|
|
rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND);
|
|
up(&dev->sem);
|
|
return rc;
|
|
}
|
|
|
|
static void runtime_resume(struct device *dev)
|
|
{
|
|
int rc;
|
|
|
|
down(&dev->sem);
|
|
rc = pcmcia_dev_resume(dev);
|
|
up(&dev->sem);
|
|
}
|
|
|
|
/************************ 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; \
|
|
}
|
|
|
|
#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; \
|
|
}
|
|
|
|
pcmcia_device_attr(func, socket, "0x%02x\n");
|
|
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 pcmcia_show_pm_state(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 pcmcia_store_pm_state(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))
|
|
runtime_resume(dev);
|
|
|
|
return ret ? ret : count;
|
|
}
|
|
|
|
|
|
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 ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
int ret;
|
|
|
|
if (!count)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&p_dev->socket->skt_mutex);
|
|
p_dev->allow_func_id_match = 1;
|
|
mutex_unlock(&p_dev->socket->skt_mutex);
|
|
|
|
ret = bus_rescan_devices(&pcmcia_bus_type);
|
|
if (ret)
|
|
printk(KERN_INFO "pcmcia: bus_rescan_devices failed after "
|
|
"allowing func_id matches\n");
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute pcmcia_dev_attrs[] = {
|
|
__ATTR(function, 0444, func_show, NULL),
|
|
__ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state),
|
|
__ATTR_RO(func_id),
|
|
__ATTR_RO(manf_id),
|
|
__ATTR_RO(card_id),
|
|
__ATTR_RO(prod_id1),
|
|
__ATTR_RO(prod_id2),
|
|
__ATTR_RO(prod_id3),
|
|
__ATTR_RO(prod_id4),
|
|
__ATTR_RO(modalias),
|
|
__ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
|
|
__ATTR_NULL,
|
|
};
|
|
|
|
/* 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;
|
|
|
|
if (p_dev->suspended)
|
|
return 0;
|
|
|
|
ds_dbg(2, "suspending %s\n", dev->bus_id);
|
|
|
|
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) {
|
|
printk(KERN_ERR "pcmcia: device %s (driver %s) did "
|
|
"not want to go to sleep (%d)\n",
|
|
p_dev->devname, p_drv->drv.name, ret);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (p_dev->device_no == p_dev->func) {
|
|
ds_dbg(2, "releasing configuration for %s\n", dev->bus_id);
|
|
pcmcia_release_configuration(p_dev);
|
|
}
|
|
|
|
out:
|
|
if (!ret)
|
|
p_dev->suspended = 1;
|
|
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;
|
|
|
|
if (!p_dev->suspended)
|
|
return 0;
|
|
|
|
ds_dbg(2, "resuming %s\n", dev->bus_id);
|
|
|
|
if (dev->driver)
|
|
p_drv = to_pcmcia_drv(dev->driver);
|
|
|
|
if (!p_drv)
|
|
goto out;
|
|
|
|
if (p_dev->device_no == p_dev->func) {
|
|
ds_dbg(2, "requesting configuration for %s\n", dev->bus_id);
|
|
ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
if (p_drv->resume)
|
|
ret = p_drv->resume(p_dev);
|
|
|
|
out:
|
|
if (!ret)
|
|
p_dev->suspended = 0;
|
|
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)
|
|
{
|
|
ds_dbg(2, "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)
|
|
{
|
|
ds_dbg(2, "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;
|
|
}
|
|
|
|
|
|
/*======================================================================
|
|
|
|
The card status event handler.
|
|
|
|
======================================================================*/
|
|
|
|
/* Normally, the event is passed to individual drivers after
|
|
* informing userspace. Only for CS_EVENT_CARD_REMOVAL this
|
|
* is inversed to maintain historic compatibility.
|
|
*/
|
|
|
|
static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
|
|
{
|
|
struct pcmcia_socket *s = pcmcia_get_socket(skt);
|
|
|
|
if (!s) {
|
|
printk(KERN_ERR "PCMCIA obtaining reference to socket %p " \
|
|
"failed, event 0x%x lost!\n", skt, event);
|
|
return -ENODEV;
|
|
}
|
|
|
|
ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
|
|
event, priority, skt);
|
|
|
|
switch (event) {
|
|
case CS_EVENT_CARD_REMOVAL:
|
|
s->pcmcia_state.present = 0;
|
|
pcmcia_card_remove(skt, NULL);
|
|
handle_event(skt, event);
|
|
break;
|
|
|
|
case CS_EVENT_CARD_INSERTION:
|
|
s->pcmcia_state.present = 1;
|
|
pcmcia_card_add(skt);
|
|
handle_event(skt, event);
|
|
break;
|
|
|
|
case CS_EVENT_EJECTION_REQUEST:
|
|
break;
|
|
|
|
case CS_EVENT_PM_SUSPEND:
|
|
case CS_EVENT_PM_RESUME:
|
|
case CS_EVENT_RESET_PHYSICAL:
|
|
case CS_EVENT_CARD_RESET:
|
|
default:
|
|
handle_event(skt, event);
|
|
break;
|
|
}
|
|
|
|
pcmcia_put_socket(s);
|
|
|
|
return 0;
|
|
} /* ds_event */
|
|
|
|
|
|
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 (!p_dev->socket->pcmcia_state.present)
|
|
goto out;
|
|
|
|
if (p_dev->_removed)
|
|
goto out;
|
|
|
|
if (p_dev->suspended)
|
|
goto out;
|
|
|
|
ret = p_dev;
|
|
out:
|
|
pcmcia_put_dev(p_dev);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(pcmcia_dev_present);
|
|
|
|
|
|
static struct pcmcia_callback pcmcia_bus_callback = {
|
|
.owner = THIS_MODULE,
|
|
.event = ds_event,
|
|
.requery = pcmcia_bus_rescan,
|
|
.suspend = pcmcia_bus_suspend,
|
|
.resume = pcmcia_bus_resume,
|
|
};
|
|
|
|
static int __devinit 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) {
|
|
printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Ugly. But we want to wait for the socket threads to have started up.
|
|
* We really should let the drivers themselves drive some of this..
|
|
*/
|
|
msleep(250);
|
|
|
|
#ifdef CONFIG_PCMCIA_IOCTL
|
|
init_waitqueue_head(&socket->queue);
|
|
#endif
|
|
INIT_LIST_HEAD(&socket->devices_list);
|
|
INIT_WORK(&socket->device_add, pcmcia_delayed_add_device);
|
|
memset(&socket->pcmcia_state, 0, sizeof(u8));
|
|
socket->device_count = 0;
|
|
|
|
ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
|
|
if (ret) {
|
|
printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
|
|
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;
|
|
|
|
socket->pcmcia_state.dead = 1;
|
|
pccard_register_pcmcia(socket, NULL);
|
|
|
|
/* unregister any unbound devices */
|
|
mutex_lock(&socket->skt_mutex);
|
|
pcmcia_card_remove(socket, NULL);
|
|
mutex_unlock(&socket->skt_mutex);
|
|
|
|
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_attrs = pcmcia_dev_attrs,
|
|
.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;
|
|
|
|
spin_lock_init(&pcmcia_dev_list_lock);
|
|
|
|
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;
|
|
}
|
|
|
|
pcmcia_setup_ioctl();
|
|
|
|
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)
|
|
{
|
|
pcmcia_cleanup_ioctl();
|
|
|
|
class_interface_unregister(&pcmcia_bus_interface);
|
|
|
|
bus_unregister(&pcmcia_bus_type);
|
|
}
|
|
module_exit(exit_pcmcia_bus);
|
|
|
|
|
|
MODULE_ALIAS("ds");
|