ef69bb2ec6
Another step towards proper locking: Rework the callback provided to capidrv for controller state changes. This is so far attached to an application, which would require us to hold the corresponding lock across notification calls. But there is no direct relation between a controller up/down event and an application, so let's decouple them and provide a notifier call chain for those events instead. This notifier chain is first of all used internally. Here we request the highest priority to unsure that housekeeping work is done before any other notifications. The chain is exported via [un]register_capictr_notifier to our only user, capidrv, to replace the racy and unfixable capi20_set_callback. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
155 lines
5.1 KiB
C
155 lines
5.1 KiB
C
/*
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* $Id: kernelcapi.h,v 1.8.6.2 2001/02/07 11:31:31 kai Exp $
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*
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* Kernel CAPI 2.0 Interface for Linux
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*
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* (c) Copyright 1997 by Carsten Paeth (calle@calle.in-berlin.de)
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*
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*/
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#ifndef __KERNELCAPI_H__
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#define __KERNELCAPI_H__
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#define CAPI_MAXAPPL 240 /* maximum number of applications */
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#define CAPI_MAXCONTR 32 /* maximum number of controller */
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#define CAPI_MAXDATAWINDOW 8
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typedef struct kcapi_flagdef {
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int contr;
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int flag;
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} kcapi_flagdef;
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typedef struct kcapi_carddef {
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char driver[32];
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unsigned int port;
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unsigned irq;
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unsigned int membase;
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int cardnr;
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} kcapi_carddef;
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/* new ioctls >= 10 */
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#define KCAPI_CMD_TRACE 10
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#define KCAPI_CMD_ADDCARD 11 /* OBSOLETE */
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/*
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* flag > 2 => trace also data
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* flag & 1 => show trace
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*/
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#define KCAPI_TRACE_OFF 0
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#define KCAPI_TRACE_SHORT_NO_DATA 1
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#define KCAPI_TRACE_FULL_NO_DATA 2
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#define KCAPI_TRACE_SHORT 3
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#define KCAPI_TRACE_FULL 4
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#ifdef __KERNEL__
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#include <linux/list.h>
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#include <linux/skbuff.h>
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#include <linux/workqueue.h>
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#include <linux/notifier.h>
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struct capi20_appl {
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u16 applid;
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capi_register_params rparam;
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void (*recv_message)(struct capi20_appl *ap, struct sk_buff *skb);
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void *private;
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/* internal to kernelcapi.o */
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unsigned long nrecvctlpkt;
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unsigned long nrecvdatapkt;
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unsigned long nsentctlpkt;
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unsigned long nsentdatapkt;
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struct mutex recv_mtx;
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struct sk_buff_head recv_queue;
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struct work_struct recv_work;
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int release_in_progress;
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};
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u16 capi20_isinstalled(void);
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u16 capi20_register(struct capi20_appl *ap);
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u16 capi20_release(struct capi20_appl *ap);
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u16 capi20_put_message(struct capi20_appl *ap, struct sk_buff *skb);
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u16 capi20_get_manufacturer(u32 contr, u8 buf[CAPI_MANUFACTURER_LEN]);
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u16 capi20_get_version(u32 contr, struct capi_version *verp);
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u16 capi20_get_serial(u32 contr, u8 serial[CAPI_SERIAL_LEN]);
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u16 capi20_get_profile(u32 contr, struct capi_profile *profp);
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int capi20_manufacturer(unsigned int cmd, void __user *data);
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#define CAPICTR_UP 0
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#define CAPICTR_DOWN 1
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int register_capictr_notifier(struct notifier_block *nb);
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int unregister_capictr_notifier(struct notifier_block *nb);
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#define CAPI_NOERROR 0x0000
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#define CAPI_TOOMANYAPPLS 0x1001
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#define CAPI_LOGBLKSIZETOSMALL 0x1002
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#define CAPI_BUFFEXECEEDS64K 0x1003
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#define CAPI_MSGBUFSIZETOOSMALL 0x1004
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#define CAPI_ANZLOGCONNNOTSUPPORTED 0x1005
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#define CAPI_REGRESERVED 0x1006
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#define CAPI_REGBUSY 0x1007
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#define CAPI_REGOSRESOURCEERR 0x1008
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#define CAPI_REGNOTINSTALLED 0x1009
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#define CAPI_REGCTRLERNOTSUPPORTEXTEQUIP 0x100a
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#define CAPI_REGCTRLERONLYSUPPORTEXTEQUIP 0x100b
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#define CAPI_ILLAPPNR 0x1101
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#define CAPI_ILLCMDORSUBCMDORMSGTOSMALL 0x1102
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#define CAPI_SENDQUEUEFULL 0x1103
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#define CAPI_RECEIVEQUEUEEMPTY 0x1104
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#define CAPI_RECEIVEOVERFLOW 0x1105
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#define CAPI_UNKNOWNNOTPAR 0x1106
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#define CAPI_MSGBUSY 0x1107
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#define CAPI_MSGOSRESOURCEERR 0x1108
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#define CAPI_MSGNOTINSTALLED 0x1109
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#define CAPI_MSGCTRLERNOTSUPPORTEXTEQUIP 0x110a
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#define CAPI_MSGCTRLERONLYSUPPORTEXTEQUIP 0x110b
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typedef enum {
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CapiMessageNotSupportedInCurrentState = 0x2001,
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CapiIllContrPlciNcci = 0x2002,
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CapiNoPlciAvailable = 0x2003,
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CapiNoNcciAvailable = 0x2004,
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CapiNoListenResourcesAvailable = 0x2005,
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CapiNoFaxResourcesAvailable = 0x2006,
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CapiIllMessageParmCoding = 0x2007,
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} RESOURCE_CODING_PROBLEM;
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typedef enum {
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CapiB1ProtocolNotSupported = 0x3001,
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CapiB2ProtocolNotSupported = 0x3002,
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CapiB3ProtocolNotSupported = 0x3003,
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CapiB1ProtocolParameterNotSupported = 0x3004,
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CapiB2ProtocolParameterNotSupported = 0x3005,
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CapiB3ProtocolParameterNotSupported = 0x3006,
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CapiBProtocolCombinationNotSupported = 0x3007,
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CapiNcpiNotSupported = 0x3008,
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CapiCipValueUnknown = 0x3009,
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CapiFlagsNotSupported = 0x300a,
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CapiFacilityNotSupported = 0x300b,
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CapiDataLengthNotSupportedByCurrentProtocol = 0x300c,
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CapiResetProcedureNotSupportedByCurrentProtocol = 0x300d,
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CapiTeiAssignmentFailed = 0x300e,
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} REQUESTED_SERVICES_PROBLEM;
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typedef enum {
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CapiSuccess = 0x0000,
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CapiSupplementaryServiceNotSupported = 0x300e,
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CapiRequestNotAllowedInThisState = 0x3010,
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} SUPPLEMENTARY_SERVICE_INFO;
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typedef enum {
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CapiProtocolErrorLayer1 = 0x3301,
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CapiProtocolErrorLayer2 = 0x3302,
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CapiProtocolErrorLayer3 = 0x3303,
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CapiTimeOut = 0x3303, // SuppServiceReason
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CapiCallGivenToOtherApplication = 0x3304,
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} CAPI_REASON;
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#endif /* __KERNEL__ */
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#endif /* __KERNELCAPI_H__ */
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