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These functions can be invoked by the function that handles interception of the CHSC SEI instruction for requests indicating the accessibility of one or more adjunct processors has changed. Signed-off-by: Rorie Reyes <rreyes@linux.ibm.com> Reviewed-by: Anthony Krowiak <akrowiak@linux.ibm.com> Link: https://lore.kernel.org/qemu-devel/20250609164418.17585-4-rreyes@linux.ibm.com Signed-off-by: Cédric Le Goater <clg@redhat.com>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/*
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* ap bridge
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*
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* Copyright 2018 IBM Corp.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#ifndef HW_S390X_AP_BRIDGE_H
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#define HW_S390X_AP_BRIDGE_H
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#define TYPE_AP_BRIDGE "ap-bridge"
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#define TYPE_AP_BUS "ap-bus"
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void s390_init_ap(void);
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typedef struct ChscSeiNt0Res {
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uint16_t length;
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uint16_t code;
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uint8_t reserved1;
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uint16_t reserved2;
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uint8_t nt;
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#define PENDING_EVENT_INFO_BITMASK 0x80;
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uint8_t flags;
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uint8_t reserved3;
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uint8_t rs;
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uint8_t cc;
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} QEMU_PACKED ChscSeiNt0Res;
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#define NT0_RES_RESPONSE_CODE 1
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#define NT0_RES_NT_DEFAULT 0
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#define NT0_RES_RS_AP_CHANGE 5
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#define NT0_RES_CC_AP_CHANGE 3
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#define EVENT_INFORMATION_NOT_STORED 1
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#define EVENT_INFORMATION_STORED 0
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/**
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* ap_chsc_sei_nt0_get_event - Retrieve the next pending AP config
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* change event
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* @res: Pointer to a ChscSeiNt0Res struct to be filled with event
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* data
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*
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* This function checks for any pending AP config change events and,
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* if present, populates the provided response structure with the
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* appropriate SEI NT0 fields.
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*
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* Return:
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* EVENT_INFORMATION_STORED - An event was available and written to @res
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* EVENT_INFORMATION_NOT_STORED - No event was available
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*/
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int ap_chsc_sei_nt0_get_event(void *res);
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bool ap_chsc_sei_nt0_have_event(void);
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#endif
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