| /* 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 */ |
