ab14de6c37
Hopefully this will make it more maintainable and less error prone. Code makes use of search_exception_tables(). Since it calls this function before the kernel exeception table is sorted, there is an early call to sort_main_extable(). This way it's easy to use the already present infrastructure of fixup sections. Also this would allows to easily convert the rest of head[31|64].S into C code. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
155 lines
4.5 KiB
C
155 lines
4.5 KiB
C
/*
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* drivers/s390/char/sclp.h
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*
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* S390 version
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* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
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* Author(s): Martin Peschke <mpeschke@de.ibm.com>
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* Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef __SCLP_H__
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#define __SCLP_H__
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#include <linux/types.h>
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#include <linux/list.h>
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#include <asm/sclp.h>
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#include <asm/ebcdic.h>
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/* maximum number of pages concerning our own memory management */
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#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
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#define MAX_CONSOLE_PAGES 4
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#define EvTyp_OpCmd 0x01
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#define EvTyp_Msg 0x02
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#define EvTyp_StateChange 0x08
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#define EvTyp_PMsgCmd 0x09
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#define EvTyp_CntlProgOpCmd 0x20
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#define EvTyp_CntlProgIdent 0x0B
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#define EvTyp_SigQuiesce 0x1D
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#define EvTyp_VT220Msg 0x1A
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#define EvTyp_OpCmd_Mask 0x80000000
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#define EvTyp_Msg_Mask 0x40000000
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#define EvTyp_StateChange_Mask 0x01000000
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#define EvTyp_PMsgCmd_Mask 0x00800000
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#define EvTyp_CtlProgOpCmd_Mask 0x00000001
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#define EvTyp_CtlProgIdent_Mask 0x00200000
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#define EvTyp_SigQuiesce_Mask 0x00000008
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#define EvTyp_VT220Msg_Mask 0x00000040
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#define GnrlMsgFlgs_DOM 0x8000
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#define GnrlMsgFlgs_SndAlrm 0x4000
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#define GnrlMsgFlgs_HoldMsg 0x2000
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#define LnTpFlgs_CntlText 0x8000
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#define LnTpFlgs_LabelText 0x4000
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#define LnTpFlgs_DataText 0x2000
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#define LnTpFlgs_EndText 0x1000
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#define LnTpFlgs_PromptText 0x0800
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typedef unsigned int sclp_cmdw_t;
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#define SCLP_CMDW_READ_EVENT_DATA 0x00770005
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#define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005
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#define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005
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#define SCLP_CMDW_READ_SCP_INFO 0x00020001
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#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
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#define GDS_ID_MDSMU 0x1310
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#define GDS_ID_MDSRouteInfo 0x1311
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#define GDS_ID_AgUnWrkCorr 0x1549
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#define GDS_ID_SNACondReport 0x1532
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#define GDS_ID_CPMSU 0x1212
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#define GDS_ID_RoutTargInstr 0x154D
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#define GDS_ID_OpReq 0x8070
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#define GDS_ID_TextCmd 0x1320
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#define GDS_KEY_SelfDefTextMsg 0x31
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typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */
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struct gds_subvector {
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u8 length;
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u8 key;
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} __attribute__((packed));
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struct gds_vector {
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u16 length;
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u16 gds_id;
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} __attribute__((packed));
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struct evbuf_header {
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u16 length;
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u8 type;
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u8 flags;
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u16 _reserved;
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} __attribute__((packed));
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struct sclp_req {
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struct list_head list; /* list_head for request queueing. */
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sclp_cmdw_t command; /* sclp command to execute */
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void *sccb; /* pointer to the sccb to execute */
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char status; /* status of this request */
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int start_count; /* number of SVCs done for this req */
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/* Callback that is called after reaching final status. */
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void (*callback)(struct sclp_req *, void *data);
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void *callback_data;
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};
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#define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */
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#define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */
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#define SCLP_REQ_RUNNING 0x02 /* request is currently running */
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#define SCLP_REQ_DONE 0x03 /* request is completed successfully */
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#define SCLP_REQ_FAILED 0x05 /* request is finally failed */
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/* function pointers that a high level driver has to use for registration */
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/* of some routines it wants to be called from the low level driver */
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struct sclp_register {
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struct list_head list;
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/* event masks this user is registered for */
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sccb_mask_t receive_mask;
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sccb_mask_t send_mask;
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/* actually present events */
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sccb_mask_t sclp_receive_mask;
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sccb_mask_t sclp_send_mask;
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/* called if event type availability changes */
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void (*state_change_fn)(struct sclp_register *);
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/* called for events in cp_receive_mask/sclp_receive_mask */
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void (*receiver_fn)(struct evbuf_header *);
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};
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/* externals from sclp.c */
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int sclp_add_request(struct sclp_req *req);
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void sclp_sync_wait(void);
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int sclp_register(struct sclp_register *reg);
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void sclp_unregister(struct sclp_register *reg);
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int sclp_remove_processed(struct sccb_header *sccb);
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int sclp_deactivate(void);
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int sclp_reactivate(void);
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int sclp_service_call(sclp_cmdw_t command, void *sccb);
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/* useful inlines */
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/* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
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/* translate single character from ASCII to EBCDIC */
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static inline unsigned char
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sclp_ascebc(unsigned char ch)
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{
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return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
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}
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/* translate string from EBCDIC to ASCII */
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static inline void
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sclp_ebcasc_str(unsigned char *str, int nr)
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{
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(MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
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}
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/* translate string from ASCII to EBCDIC */
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static inline void
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sclp_ascebc_str(unsigned char *str, int nr)
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{
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(MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
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}
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#endif /* __SCLP_H__ */
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