Specifications

Contents

Preface ............................................................ xiii

1 Data Structures

1.1 Conﬁguration Control Block (ACF) .............................. 1–3

1.2 Adapter Control Block (ADP) . . . ................................ 1–5

1.3 Channel Control Block (CCB) . . ................................ 1–12

1.4 Per-CPU Database (CPU) ..................................... 1–13

1.5 Control Register Access Mailbox (CRAM) . . ....................... 1–20

1.5.1 Hardware Mailbox Structure ................................ 1–22

1.6 Control Register Access Mailbox Header (CRAMH) . . . ............... 1–24

1.7 Channel Request Block (CRB) . . ................................ 1–26

1.7.1 Interrupt Transfer Vector Block (VEC). . ....................... 1–29

1.8 Device Data Block (DDB) ...................................... 1–34

1.9 Driver Dispatch Table (DDT) . . . ................................ 1–35

1.10 Driver Prologue Table (DPT) . . . ................................ 1–38

1.11 Interrupt Dispatch Block (IDB) . ................................ 1–42

1.12 I/O Request Packet (IRP) ...................................... 1–44

1.13 I/O Request Packet Extension (IRPE) ............................ 1–49

1.14 Object Rights Block (ORB) ..................................... 1–51

1.15 SCSI Class Driver Request Packet (SCDRP) ....................... 1–54

1.16 SCSI Connection Descriptor Table (SCDT). . ....................... 1–66

1.17 SCSI Port Descriptor Table (SPDT) .............................. 1–73

1.18 Spinlock Data Structure (SPL) . . ................................ 1–81

1.19 Unit Control Block (UCB) ..................................... 1–83

2 System Macros Invoked by Drivers

ADPDISP . . ................................................ 2–2

BI_NODE_RESET . . . ........................................ 2–5

CASE ..................................................... 2–6

CLASS_CTRL_INIT . . ........................................ 2–7

CLASS_UNIT_INIT . . ........................................ 2–8

CPUDISP . . ................................................ 2–9

DDTAB ................................................... 2–12

$DEF ..................................................... 2–14

$DEFEND . ................................................ 2–15

$DEFINI . . ................................................ 2–16

DEVICELOCK .............................................. 2–17

DEVICEUNLOCK . . . ........................................ 2–19

DPTAB.................................................... 2–21

DPT_STORE ............................................... 2–25