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/* SPDX-License-Identifier: GPL-2.0 */
/*
* DAT table and related structures
*
* Copyright IBM Corp. 2024
*
*/
#ifndef _S390_DAT_BITS_H
#define _S390_DAT_BITS_H
union asce {
unsigned long val;
struct {
unsigned long rsto: 52;/* Region- or Segment-Table Origin */
unsigned long : 2;
unsigned long g : 1; /* Subspace Group control */
unsigned long p : 1; /* Private Space control */
unsigned long s : 1; /* Storage-Alteration-Event control */
unsigned long x : 1; /* Space-Switch-Event control */
unsigned long r : 1; /* Real-Space control */
unsigned long : 1;
unsigned long dt : 2; /* Designation-Type control */
unsigned long tl : 2; /* Region- or Segment-Table Length */
};
};
enum {
ASCE_TYPE_SEGMENT = 0,
ASCE_TYPE_REGION3 = 1,
ASCE_TYPE_REGION2 = 2,
ASCE_TYPE_REGION1 = 3
};
union region1_table_entry {
unsigned long val;
struct {
unsigned long rto: 52;/* Region-Table Origin */
unsigned long : 2;
unsigned long p : 1; /* DAT-Protection Bit */
unsigned long : 1;
unsigned long tf : 2; /* Region-Second-Table Offset */
unsigned long i : 1; /* Region-Invalid Bit */
unsigned long : 1;
unsigned long tt : 2; /* Table-Type Bits */
unsigned long tl : 2; /* Region-Second-Table Length */
};
};
union region2_table_entry {
unsigned long val;
struct {
unsigned long rto: 52;/* Region-Table Origin */
unsigned long : 2;
unsigned long p : 1; /* DAT-Protection Bit */
unsigned long : 1;
unsigned long tf : 2; /* Region-Third-Table Offset */
unsigned long i : 1; /* Region-Invalid Bit */
unsigned long : 1;
unsigned long tt : 2; /* Table-Type Bits */
unsigned long tl : 2; /* Region-Third-Table Length */
};
};
struct region3_table_entry_fc0 {
unsigned long sto: 52;/* Segment-Table Origin */
unsigned long : 1;
unsigned long fc : 1; /* Format-Control */
unsigned long p : 1; /* DAT-Protection Bit */
unsigned long : 1;
unsigned long tf : 2; /* Segment-Table Offset */
unsigned long i : 1; /* Region-Invalid Bit */
unsigned long cr : 1; /* Common-Region Bit */
unsigned long tt : 2; /* Table-Type Bits */
unsigned long tl : 2; /* Segment-Table Length */
};
struct region3_table_entry_fc1 {
unsigned long rfaa: 33;/* Region-Frame Absolute Address */
unsigned long : 14;
unsigned long av : 1; /* ACCF-Validity Control */
unsigned long acc : 4; /* Access-Control Bits */
unsigned long f : 1; /* Fetch-Protection Bit */
unsigned long fc : 1; /* Format-Control */
unsigned long p : 1; /* DAT-Protection Bit */
unsigned long iep : 1; /* Instruction-Execution-Protection */
unsigned long : 2;
unsigned long i : 1; /* Region-Invalid Bit */
unsigned long cr : 1; /* Common-Region Bit */
unsigned long tt : 2; /* Table-Type Bits */
unsigned long : 2;
};
union region3_table_entry {
unsigned long val;
struct region3_table_entry_fc0 fc0;
struct region3_table_entry_fc1 fc1;
struct {
unsigned long : 53;
unsigned long fc: 1; /* Format-Control */
unsigned long : 4;
unsigned long i : 1; /* Region-Invalid Bit */
unsigned long cr: 1; /* Common-Region Bit */
unsigned long tt: 2; /* Table-Type Bits */
unsigned long : 2;
};
};
struct segment_table_entry_fc0 {
unsigned long pto: 53;/* Page-Table Origin */
unsigned long fc : 1; /* Format-Control */
unsigned long p : 1; /* DAT-Protection Bit */
unsigned long : 3;
unsigned long i : 1; /* Segment-Invalid Bit */
unsigned long cs : 1; /* Common-Segment Bit */
unsigned long tt : 2; /* Table-Type Bits */
unsigned long : 2;
};
struct segment_table_entry_fc1 {
unsigned long sfaa: 44;/* Segment-Frame Absolute Address */
unsigned long : 3;
unsigned long av : 1; /* ACCF-Validity Control */
unsigned long acc : 4; /* Access-Control Bits */
unsigned long f : 1; /* Fetch-Protection Bit */
unsigned long fc : 1; /* Format-Control */
unsigned long p : 1; /* DAT-Protection Bit */
unsigned long iep : 1; /* Instruction-Execution-Protection */
unsigned long : 2;
unsigned long i : 1; /* Segment-Invalid Bit */
unsigned long cs : 1; /* Common-Segment Bit */
unsigned long tt : 2; /* Table-Type Bits */
unsigned long : 2;
};
union segment_table_entry {
unsigned long val;
struct segment_table_entry_fc0 fc0;
struct segment_table_entry_fc1 fc1;
struct {
unsigned long : 53;
unsigned long fc: 1; /* Format-Control */
unsigned long : 4;
unsigned long i : 1; /* Segment-Invalid Bit */
unsigned long cs: 1; /* Common-Segment Bit */
unsigned long tt: 2; /* Table-Type Bits */
unsigned long : 2;
};
};
union page_table_entry {
unsigned long val;
struct {
unsigned long pfra: 52;/* Page-Frame Real Address */
unsigned long z : 1; /* Zero Bit */
unsigned long i : 1; /* Page-Invalid Bit */
unsigned long p : 1; /* DAT-Protection Bit */
unsigned long iep : 1; /* Instruction-Execution-Protection */
unsigned long : 8;
};
};
enum {
TABLE_TYPE_SEGMENT = 0,
TABLE_TYPE_REGION3 = 1,
TABLE_TYPE_REGION2 = 2,
TABLE_TYPE_REGION1 = 3
};
#endif /* _S390_DAT_BITS_H */
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