path: root/drivers/pcmcia/ds.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"

/*====================================================================*/

/* Module parameters */

MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
MODULE_DESCRIPTION("PCMCIA Driver Services");
MODULE_LICENSE("GPL");

#ifdef CONFIG_PCMCIA_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)
#define ds_dev_dbg(lvl, dev, fmt, arg...) do {				\
	if (ds_pc_debug > (lvl))					\
		dev_printk(KERN_DEBUG, dev, "ds: " fmt , ## arg);	\
} while (0)
#else
#define ds_dbg(lvl, fmt, arg...) do { } while (0)
#define ds_dev_dbg(lvl, dev, 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 {
    const int key;
    const char *msg;
} lookup_t;

static const lookup_t error_table[] = {
    { 0,			"Operation succeeded" },
    { -EIO,			"Input/Output error" },
    { -ENODEV,			"No card present" },
    { -EINVAL,			"Bad parameter" },
    { -EACCES,			"Configuration locked" },
    { -EBUSY,			"Resource in use" },
    { -ENOSPC,			"No more items" },
    { -ENOMEM,			"Out of resource" },
};


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" }
};

const char *pcmcia_error_func(int func)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(service_table); i++)
		if (service_table[i].key == func)
			return service_table[i].msg;

	return "Unknown service number";
}
EXPORT_SYMBOL(pcmcia_error_func);

const char *pcmcia_error_ret(int ret)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(error_table); i++)
		if (error_table[i].key == ret)
			return error_table[i].msg;

	return "unknown";
}
EXPORT_SYMBOL(pcmcia_error_ret);

/*======================================================================*/



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(struc