![Ingo Molnar](/assets/img/avatar_default.png)
This patch reduces the stack footprint of pcmcia_device_query() from 416 bytes to 36 bytes. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1246 lines
31 KiB
C
1246 lines
31 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 - 2005 Dominik Brodowski
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*/
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#include <linux/config.h>
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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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#define IN_CARD_SERVICES
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#include <pcmcia/cs_types.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ds.h>
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#include <pcmcia/ss.h>
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#include "cs_internal.h"
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#include "ds_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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#ifdef DEBUG
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int ds_pc_debug;
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module_param_named(pc_debug, ds_pc_debug, int, 0644);
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#define ds_dbg(lvl, fmt, arg...) do { \
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if (ds_pc_debug > (lvl)) \
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printk(KERN_DEBUG "ds: " fmt , ## arg); \
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} while (0)
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#else
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#define ds_dbg(lvl, fmt, arg...) do { } while (0)
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#endif
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spinlock_t pcmcia_dev_list_lock;
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static int unbind_request(struct pcmcia_socket *s);
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/*====================================================================*/
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/* code which was in cs.c before */
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/* String tables for error messages */
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typedef struct lookup_t {
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int key;
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char *msg;
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} lookup_t;
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static const lookup_t error_table[] = {
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{ CS_SUCCESS, "Operation succeeded" },
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{ CS_BAD_ADAPTER, "Bad adapter" },
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{ CS_BAD_ATTRIBUTE, "Bad attribute", },
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{ CS_BAD_BASE, "Bad base address" },
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{ CS_BAD_EDC, "Bad EDC" },
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{ CS_BAD_IRQ, "Bad IRQ" },
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{ CS_BAD_OFFSET, "Bad offset" },
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{ CS_BAD_PAGE, "Bad page number" },
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{ CS_READ_FAILURE, "Read failure" },
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{ CS_BAD_SIZE, "Bad size" },
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{ CS_BAD_SOCKET, "Bad socket" },
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{ CS_BAD_TYPE, "Bad type" },
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{ CS_BAD_VCC, "Bad Vcc" },
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{ CS_BAD_VPP, "Bad Vpp" },
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{ CS_BAD_WINDOW, "Bad window" },
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{ CS_WRITE_FAILURE, "Write failure" },
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{ CS_NO_CARD, "No card present" },
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{ CS_UNSUPPORTED_FUNCTION, "Usupported function" },
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{ CS_UNSUPPORTED_MODE, "Unsupported mode" },
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{ CS_BAD_SPEED, "Bad speed" },
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{ CS_BUSY, "Resource busy" },
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{ CS_GENERAL_FAILURE, "General failure" },
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{ CS_WRITE_PROTECTED, "Write protected" },
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{ CS_BAD_ARG_LENGTH, "Bad argument length" },
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{ CS_BAD_ARGS, "Bad arguments" },
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{ CS_CONFIGURATION_LOCKED, "Configuration locked" },
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{ CS_IN_USE, "Resource in use" },
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{ CS_NO_MORE_ITEMS, "No more items" },
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{ CS_OUT_OF_RESOURCE, "Out of resource" },
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{ CS_BAD_HANDLE, "Bad handle" },
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{ CS_BAD_TUPLE, "Bad CIS tuple" }
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};
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static const lookup_t service_table[] = {
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{ AccessConfigurationRegister, "AccessConfigurationRegister" },
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{ AddSocketServices, "AddSocketServices" },
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{ AdjustResourceInfo, "AdjustResourceInfo" },
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{ CheckEraseQueue, "CheckEraseQueue" },
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{ CloseMemory, "CloseMemory" },
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{ DeregisterClient, "DeregisterClient" },
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{ DeregisterEraseQueue, "DeregisterEraseQueue" },
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{ GetCardServicesInfo, "GetCardServicesInfo" },
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{ GetClientInfo, "GetClientInfo" },
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{ GetConfigurationInfo, "GetConfigurationInfo" },
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{ GetEventMask, "GetEventMask" },
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{ GetFirstClient, "GetFirstClient" },
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{ GetFirstRegion, "GetFirstRegion" },
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{ GetFirstTuple, "GetFirstTuple" },
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{ GetNextClient, "GetNextClient" },
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{ GetNextRegion, "GetNextRegion" },
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{ GetNextTuple, "GetNextTuple" },
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{ GetStatus, "GetStatus" },
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{ GetTupleData, "GetTupleData" },
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{ MapMemPage, "MapMemPage" },
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{ ModifyConfiguration, "ModifyConfiguration" },
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{ ModifyWindow, "ModifyWindow" },
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{ OpenMemory, "OpenMemory" },
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{ ParseTuple, "ParseTuple" },
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{ ReadMemory, "ReadMemory" },
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{ RegisterClient, "RegisterClient" },
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{ RegisterEraseQueue, "RegisterEraseQueue" },
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{ RegisterMTD, "RegisterMTD" },
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{ ReleaseConfiguration, "ReleaseConfiguration" },
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{ ReleaseIO, "ReleaseIO" },
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{ ReleaseIRQ, "ReleaseIRQ" },
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{ ReleaseWindow, "ReleaseWindow" },
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{ RequestConfiguration, "RequestConfiguration" },
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{ RequestIO, "RequestIO" },
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{ RequestIRQ, "RequestIRQ" },
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{ RequestSocketMask, "RequestSocketMask" },
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{ RequestWindow, "RequestWindow" },
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{ ResetCard, "ResetCard" },
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{ SetEventMask, "SetEventMask" },
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{ ValidateCIS, "ValidateCIS" },
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{ WriteMemory, "WriteMemory" },
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{ BindDevice, "BindDevice" },
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{ BindMTD, "BindMTD" },
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{ ReportError, "ReportError" },
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{ SuspendCard, "SuspendCard" },
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{ ResumeCard, "ResumeCard" },
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{ EjectCard, "EjectCard" },
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{ InsertCard, "InsertCard" },
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{ ReplaceCIS, "ReplaceCIS" }
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};
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static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err)
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{
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int i;
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char *serv;
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if (!p_dev)
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printk(KERN_NOTICE);
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else
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printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
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for (i = 0; i < ARRAY_SIZE(service_table); i++)
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if (service_table[i].key == err->func)
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break;
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if (i < ARRAY_SIZE(service_table))
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serv = service_table[i].msg;
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else
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serv = "Unknown service number";
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for (i = 0; i < ARRAY_SIZE(error_table); i++)
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if (error_table[i].key == err->retcode)
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break;
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if (i < ARRAY_SIZE(error_table))
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printk("%s: %s\n", serv, error_table[i].msg);
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else
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printk("%s: Unknown error code %#x\n", serv, err->retcode);
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return CS_SUCCESS;
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} /* report_error */
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/* end of code which was in cs.c before */
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/*======================================================================*/
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void cs_error(struct pcmcia_device *p_dev, int func, int ret)
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{
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error_info_t err = { func, ret };
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pcmcia_report_error(p_dev, &err);
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}
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EXPORT_SYMBOL(cs_error);
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static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
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{
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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->attach || !p_drv->event || !p_drv->detach)
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printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
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"function\n", p_drv->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->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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#ifdef CONFIG_PCMCIA_LOAD_CIS
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/**
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* pcmcia_load_firmware - load CIS from userspace if device-provided is broken
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* @dev - the pcmcia device which needs a CIS override
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* @filename - requested filename in /lib/firmware/cis/
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*
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* This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
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* the one provided by the card is broken. The firmware files reside in
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* /lib/firmware/cis/ in userspace.
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*/
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static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
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{
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struct pcmcia_socket *s = dev->socket;
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const struct firmware *fw;
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char path[20];
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int ret=-ENOMEM;
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cisdump_t *cis;
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if (!filename)
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return -EINVAL;
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ds_dbg(1, "trying to load firmware %s\n", filename);
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if (strlen(filename) > 14)
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return -EINVAL;
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snprintf(path, 20, "%s", filename);
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if (request_firmware(&fw, path, &dev->dev) == 0) {
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if (fw->size >= CISTPL_MAX_CIS_SIZE)
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goto release;
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cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL);
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if (!cis)
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goto release;
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memset(cis, 0, sizeof(cisdump_t));
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cis->Length = fw->size + 1;
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memcpy(cis->Data, fw->data, fw->size);
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if (!pcmcia_replace_cis(s, cis))
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ret = 0;
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}
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release:
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release_firmware(fw);
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return (ret);
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}
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#else /* !CONFIG_PCMCIA_LOAD_CIS */
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static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
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{
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return -ENODEV;
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}
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#endif
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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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*
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* Registers a PCMCIA driver with the PCMCIA bus core.
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*/
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static int pcmcia_device_probe(struct device *dev);
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static int pcmcia_device_remove(struct device * dev);
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int pcmcia_register_driver(struct pcmcia_driver *driver)
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{
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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.probe = pcmcia_device_probe;
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driver->drv.remove = pcmcia_device_remove;
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return driver_register(&driver->drv);
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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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*/
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void pcmcia_unregister_driver(struct pcmcia_driver *driver)
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{
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driver_unregister(&driver->drv);
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}
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EXPORT_SYMBOL(pcmcia_unregister_driver);
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/* pcmcia_device handling */
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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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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_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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ds_dbg(1, "releasing dev %p\n", p_dev);
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pcmcia_put_socket(p_dev->socket);
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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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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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if (!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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if (p_drv->attach) {
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p_dev->instance = p_drv->attach();
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if ((!p_dev->instance) || (p_dev->state & CLIENT_UNBOUND)) {
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printk(KERN_NOTICE "ds: unable to create instance "
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"of '%s'!\n", p_drv->drv.name);
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ret = -EINVAL;
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}
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}
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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) || !(p_drv->attach))
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put_device(dev);
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return (ret);
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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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/* detach the "instance" */
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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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if (p_drv) {
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if ((p_drv->detach) && (p_dev->instance)) {
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p_drv->detach(p_dev->instance);
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/* from pcmcia_probe_device */
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put_device(&p_dev->dev);
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}
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module_put(p_drv->owner);
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}
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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, p_dev->func,
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CISTPL_MANFID, &manf_id)) {
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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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}
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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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p_dev->func_id = func_id.func;
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p_dev->has_func_id = 1;
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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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ds_dbg(0, "mem device geometry probably means "
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"FUNCID_MEMORY\n");
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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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}
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kfree(devgeo);
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}
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if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
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vers1)) {
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for (i=0; i < vers1->ns; i++) {
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char *tmp;
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unsigned int length;
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tmp = vers1->str + vers1->ofs[i];
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length = strlen(tmp) + 1;
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if ((length < 3) || (length > 255))
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continue;
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p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
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GFP_KERNEL);
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if (!p_dev->prod_id[i])
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continue;
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p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
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tmp, length);
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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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|
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/* device_add_lock is needed to avoid double registration by cardmgr and kernel.
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* Serializes pcmcia_device_add; will most likely be removed in future.
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*
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* While it has the caveat that adding new PCMCIA devices inside(!) device_register()
|
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* won't work, this doesn't matter much at the moment: the driver core doesn't
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* support it either.
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*/
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static DECLARE_MUTEX(device_add_lock);
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|
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struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
|
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{
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struct pcmcia_device *p_dev;
|
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unsigned long flags;
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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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down(&device_add_lock);
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|
|
/* max of 2 devices per card */
|
|
if (s->device_count == 2)
|
|
goto err_put;
|
|
|
|
p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
|
|
if (!p_dev)
|
|
goto err_put;
|
|
memset(p_dev, 0, sizeof(struct pcmcia_device));
|
|
|
|
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.dev;
|
|
p_dev->dev.release = pcmcia_release_dev;
|
|
sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
|
|
|
|
/* compat */
|
|
p_dev->state = CLIENT_UNBOUND;
|
|
|
|
/* Add to the list in pcmcia_bus_socket */
|
|
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
|
|
list_add_tail(&p_dev->socket_device_list, &s->devices_list);
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
|
|
pcmcia_device_query(p_dev);
|
|
|
|
if (device_register(&p_dev->dev)) {
|
|
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
|
|
list_del(&p_dev->socket_device_list);
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
|
|
goto err_free;
|
|
}
|
|
|
|
up(&device_add_lock);
|
|
|
|
return p_dev;
|
|
|
|
err_free:
|
|
kfree(p_dev);
|
|
s->device_count--;
|
|
err_put:
|
|
up(&device_add_lock);
|
|
pcmcia_put_socket(s);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static int pcmcia_card_add(struct pcmcia_socket *s)
|
|
{
|
|
cisinfo_t cisinfo;
|
|
cistpl_longlink_mfc_t mfc;
|
|
unsigned int no_funcs, i;
|
|
int ret = 0;
|
|
|
|
if (!(s->resource_setup_done))
|
|
return -EAGAIN; /* try again, but later... */
|
|
|
|
pcmcia_validate_mem(s);
|
|
ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
|
|
if (ret || !cisinfo.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;
|
|
|
|
for (i=0; i < no_funcs; i++)
|
|
pcmcia_device_add(s, i);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
|
|
static void pcmcia_delayed_add_pseudo_device(void *data)
|
|
{
|
|
struct pcmcia_socket *s = data;
|
|
pcmcia_device_add(s, 0);
|
|
s->pcmcia_state.device_add_pending = 0;
|
|
}
|
|
|
|
static inline void pcmcia_add_pseudo_device(struct pcmcia_socket *s)
|
|
{
|
|
if (!s->pcmcia_state.device_add_pending) {
|
|
s->pcmcia_state.device_add_pending = 1;
|
|
schedule_work(&s->device_add);
|
|
}
|
|
return;
|
|
}
|
|
|
|
static int pcmcia_requery(struct device *dev, void * _data)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
if (!p_dev->dev.driver)
|
|
pcmcia_device_query(p_dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
|
|
{
|
|
int no_devices=0;
|
|
unsigned long flags;
|
|
|
|
/* must be called with skt_sem held */
|
|
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 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) {
|
|
int 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. */
|
|
bus_rescan_devices(&pcmcia_bus_type);
|
|
}
|
|
|
|
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) {
|
|
/* 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.
|
|
*/
|
|
if (dev->device_no == 0)
|
|
pcmcia_add_pseudo_device(dev->socket);
|
|
|
|
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.
|
|
*/
|
|
if (!dev->allow_func_id_match)
|
|
return 0;
|
|
}
|
|
|
|
if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
|
|
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;
|
|
|
|
/* matching by cardmgr */
|
|
if (p_dev->cardmgr == p_drv)
|
|
return 1;
|
|
|
|
while (did && did->match_flags) {
|
|
if (pcmcia_devmatch(p_dev, did))
|
|
return 1;
|
|
did++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_HOTPLUG
|
|
|
|
static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
|
|
char *buffer, int buffer_size)
|
|
{
|
|
struct pcmcia_device *p_dev;
|
|
int i, length = 0;
|
|
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]));
|
|
}
|
|
|
|
i = 0;
|
|
|
|
if (add_hotplug_env_var(envp, num_envp, &i,
|
|
buffer, buffer_size, &length,
|
|
"SOCKET_NO=%u",
|
|
p_dev->socket->sock))
|
|
return -ENOMEM;
|
|
|
|
if (add_hotplug_env_var(envp, num_envp, &i,
|
|
buffer, buffer_size, &length,
|
|
"DEVICE_NO=%02X",
|
|
p_dev->device_no))
|
|
return -ENOMEM;
|
|
|
|
if (add_hotplug_env_var(envp, num_envp, &i,
|
|
buffer, buffer_size, &length,
|
|
"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;
|
|
|
|
envp[i] = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
|
|
char *buffer, int buffer_size)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
#endif
|
|
|
|
/************************ 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 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);
|
|
if (!count)
|
|
return -EINVAL;
|
|
|
|
down(&p_dev->socket->skt_sem);
|
|
p_dev->allow_func_id_match = 1;
|
|
up(&p_dev->socket->skt_sem);
|
|
|
|
bus_rescan_devices(&pcmcia_bus_type);
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute pcmcia_dev_attrs[] = {
|
|
__ATTR(function, 0444, func_show, NULL),
|
|
__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,
|
|
};
|
|
|
|
|
|
/*======================================================================
|
|
|
|
The card status event handler.
|
|
|
|
======================================================================*/
|
|
|
|
struct send_event_data {
|
|
struct pcmcia_socket *skt;
|
|
event_t event;
|
|
int priority;
|
|
};
|
|
|
|
static int send_event_callback(struct device *dev, void * _data)
|
|
{
|
|
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
|
|
struct pcmcia_driver *p_drv;
|
|
struct send_event_data *data = _data;
|
|
|
|
/* we get called for all sockets, but may only pass the event
|
|
* for drivers _on the affected socket_ */
|
|
if (p_dev->socket != data->skt)
|
|
return 0;
|
|
|
|
p_drv = to_pcmcia_drv(p_dev->dev.driver);
|
|
if (!p_drv)
|
|
return 0;
|
|
|
|
if (p_dev->state & (CLIENT_UNBOUND|CLIENT_STALE))
|
|
return 0;
|
|
|
|
if (p_drv->event)
|
|
return p_drv->event(data->event, data->priority,
|
|
&p_dev->event_callback_args);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int send_event(struct pcmcia_socket *s, event_t event, int priority)
|
|
{
|
|
struct send_event_data private;
|
|
|
|
private.skt = s;
|
|
private.event = event;
|
|
private.priority = priority;
|
|
|
|
return bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback);
|
|
} /* send_event */
|
|
|
|
|
|
/* 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);
|
|
int ret = 0;
|
|
|
|
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;
|
|
send_event(skt, event, priority);
|
|
unbind_request(skt);
|
|
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:
|
|
ret = send_event(skt, event, priority);
|
|
break;
|
|
|
|
default:
|
|
handle_event(skt, event);
|
|
send_event(skt, event, priority);
|
|
break;
|
|
}
|
|
|
|
pcmcia_put_socket(s);
|
|
|
|
return 0;
|
|
} /* ds_event */
|
|
|
|
|
|
|
|
int pcmcia_register_client(struct pcmcia_device **handle, client_reg_t *req)
|
|
{
|
|
struct pcmcia_socket *s = NULL;
|
|
struct pcmcia_device *p_dev = NULL;
|
|
struct pcmcia_driver *p_drv = NULL;
|
|
|
|
/* Look for unbound client with matching dev_info */
|
|
down_read(&pcmcia_socket_list_rwsem);
|
|
list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
|
|
unsigned long flags;
|
|
|
|
if (s->state & SOCKET_CARDBUS)
|
|
continue;
|
|
|
|
s = pcmcia_get_socket(s);
|
|
if (!s)
|
|
continue;
|
|
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
|
|
list_for_each_entry(p_dev, &s->devices_list, socket_device_list) {
|
|
p_dev = pcmcia_get_dev(p_dev);
|
|
if (!p_dev)
|
|
continue;
|
|
if (!(p_dev->state & CLIENT_UNBOUND) ||
|
|
(!p_dev->dev.driver)) {
|
|
pcmcia_put_dev(p_dev);
|
|
continue;
|
|
}
|
|
p_drv = to_pcmcia_drv(p_dev->dev.driver);
|
|
if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) {
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
goto found;
|
|
}
|
|
pcmcia_put_dev(p_dev);
|
|
}
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
pcmcia_put_socket(s);
|
|
}
|
|
found:
|
|
up_read(&pcmcia_socket_list_rwsem);
|
|
if (!p_dev)
|
|
return -ENODEV;
|
|
|
|
pcmcia_put_socket(s); /* safe, as we already hold a reference from bind_device */
|
|
|
|
*handle = p_dev;
|
|
p_dev->state &= ~CLIENT_UNBOUND;
|
|
p_dev->event_callback_args = req->event_callback_args;
|
|
p_dev->event_callback_args.client_handle = p_dev;
|
|
|
|
|
|
if (!s->functions) {
|
|
cistpl_longlink_mfc_t mfc;
|
|
if (pccard_read_tuple(s, p_dev->func, CISTPL_LONGLINK_MFC, &mfc)
|
|
== CS_SUCCESS)
|
|
s->functions = mfc.nfn;
|
|
else
|
|
s->functions = 1;
|
|
s->config = kmalloc(sizeof(config_t) * s->functions,
|
|
GFP_KERNEL);
|
|
if (!s->config)
|
|
goto out_no_resource;
|
|
memset(s->config, 0, sizeof(config_t) * s->functions);
|
|
}
|
|
|
|
ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
|
|
p_dev, p_dev->dev.bus_id);
|
|
|
|
if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
|
|
if (p_drv->event)
|
|
p_drv->event(CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW,
|
|
&p_dev->event_callback_args);
|
|
|
|
}
|
|
|
|
return CS_SUCCESS;
|
|
|
|
out_no_resource:
|
|
pcmcia_put_dev(p_dev);
|
|
return CS_OUT_OF_RESOURCE;
|
|
} /* register_client */
|
|
EXPORT_SYMBOL(pcmcia_register_client);
|
|
|
|
|
|
/* unbind _all_ devices attached to a given pcmcia_bus_socket. The
|
|
* drivers have been called with EVENT_CARD_REMOVAL before.
|
|
*/
|
|
static int unbind_request(struct pcmcia_socket *s)
|
|
{
|
|
struct pcmcia_device *p_dev;
|
|
unsigned long flags;
|
|
|
|
ds_dbg(2, "unbind_request(%d)\n", s->sock);
|
|
|
|
s->device_count = 0;
|
|
|
|
for (;;) {
|
|
/* unregister all pcmcia_devices registered with this socket*/
|
|
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
|
|
if (list_empty(&s->devices_list)) {
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
return 0;
|
|
}
|
|
p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
|
|
list_del(&p_dev->socket_device_list);
|
|
p_dev->state |= CLIENT_STALE;
|
|
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
|
|
|
|
device_unregister(&p_dev->dev);
|
|
}
|
|
|
|
return 0;
|
|
} /* unbind_request */
|
|
|
|
int pcmcia_deregister_client(struct pcmcia_device *p_dev)
|
|
{
|
|
struct pcmcia_socket *s;
|
|
int i;
|
|
|
|
s = p_dev->socket;
|
|
ds_dbg(1, "deregister_client(%p)\n", p_dev);
|
|
|
|
if (p_dev->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
|
|
goto warn_out;
|
|
for (i = 0; i < MAX_WIN; i++)
|
|
if (p_dev->state & CLIENT_WIN_REQ(i))
|
|
goto warn_out;
|
|
|
|
if (p_dev->state & CLIENT_STALE) {
|
|
p_dev->state &= ~CLIENT_STALE;
|
|
pcmcia_put_dev(p_dev);
|
|
} else {
|
|
p_dev->state = CLIENT_UNBOUND;
|
|
}
|
|
|
|
return CS_SUCCESS;
|
|
warn_out:
|
|
printk(KERN_WARNING "ds: deregister_client was called too early.\n");
|
|
return CS_IN_USE;
|
|
} /* deregister_client */
|
|
EXPORT_SYMBOL(pcmcia_deregister_client);
|
|
|
|
static struct pcmcia_callback pcmcia_bus_callback = {
|
|
.owner = THIS_MODULE,
|
|
.event = ds_event,
|
|
.requery = pcmcia_bus_rescan,
|
|
};
|
|
|
|
static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev)
|
|
{
|
|
struct pcmcia_socket *socket = class_get_devdata(class_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_pseudo_device, socket);
|
|
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 class_device *class_dev)
|
|
{
|
|
struct pcmcia_socket *socket = class_get_devdata(class_dev);
|
|
|
|
if (!socket)
|
|
return;
|
|
|
|
socket->pcmcia_state.dead = 1;
|
|
pccard_register_pcmcia(socket, NULL);
|
|
|
|
pcmcia_put_socket(socket);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/* the pcmcia_bus_interface is used to handle pcmcia socket devices */
|
|
static struct class_interface pcmcia_bus_interface = {
|
|
.class = &pcmcia_socket_class,
|
|
.add = &pcmcia_bus_add_socket,
|
|
.remove = &pcmcia_bus_remove_socket,
|
|
};
|
|
|
|
|
|
struct bus_type pcmcia_bus_type = {
|
|
.name = "pcmcia",
|
|
.hotplug = pcmcia_bus_hotplug,
|
|
.match = pcmcia_bus_match,
|
|
.dev_attrs = pcmcia_dev_attrs,
|
|
};
|
|
|
|
|
|
static int __init init_pcmcia_bus(void)
|
|
{
|
|
spin_lock_init(&pcmcia_dev_list_lock);
|
|
|
|
bus_register(&pcmcia_bus_type);
|
|
class_interface_register(&pcmcia_bus_interface);
|
|
|
|
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");
|