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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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d082d3ce32
Make state change events adjust the correct mask by cleaning up naming inconsistencies. Also remove chance for lockup by removing unnecessary mask related check before reading events. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
177 lines
5.0 KiB
C
177 lines
5.0 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_CONFMGMDATA 0x04
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#define EVTYP_SDIAS 0x1C
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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 EVTYP_CONFMGMDATA_MASK 0x10000000
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#define EVTYP_SDIAS_MASK 0x00000010
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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 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 sccb_header {
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u16 length;
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u8 function_code;
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u8 control_mask[3];
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u16 response_code;
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} __attribute__((packed));
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extern u64 sclp_facilities;
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#define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL)
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#define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL)
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#define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL)
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#define SCLP_HAS_CPU_RECONFIG (sclp_facilities & 0x0400000000000000ULL)
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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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/* User wants to receive: */
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sccb_mask_t receive_mask;
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/* User wants to send: */
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sccb_mask_t send_mask;
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/* H/W can receive: */
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sccb_mask_t sclp_receive_mask;
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/* H/W can send: */
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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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int sclp_sdias_init(void);
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void sclp_sdias_exit(void);
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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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