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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _AHA1542_H_3#define _AHA1542_H_4 5#include <linux/types.h>6 7/* I/O Port interface 4.2 */8/* READ */9#define STATUS(base) base10#define STST BIT(7) /* Self Test in Progress */11#define DIAGF BIT(6) /* Internal Diagnostic Failure */12#define INIT BIT(5) /* Mailbox Initialization Required */13#define IDLE BIT(4) /* SCSI Host Adapter Idle */14#define CDF BIT(3) /* Command/Data Out Port Full */15#define DF BIT(2) /* Data In Port Full */16/* BIT(1) is reserved */17#define INVDCMD BIT(0) /* Invalid H A Command */18#define STATMASK (STST | DIAGF | INIT | IDLE | CDF | DF | INVDCMD)19 20#define INTRFLAGS(base) (STATUS(base)+2)21#define ANYINTR BIT(7) /* Any Interrupt */22#define SCRD BIT(3) /* SCSI Reset Detected */23#define HACC BIT(2) /* HA Command Complete */24#define MBOA BIT(1) /* MBO Empty */25#define MBIF BIT(0) /* MBI Full */26#define INTRMASK (ANYINTR | SCRD | HACC | MBOA | MBIF)27 28/* WRITE */29#define CONTROL(base) STATUS(base)30#define HRST BIT(7) /* Hard Reset */31#define SRST BIT(6) /* Soft Reset */32#define IRST BIT(5) /* Interrupt Reset */33#define SCRST BIT(4) /* SCSI Bus Reset */34 35/* READ/WRITE */36#define DATA(base) (STATUS(base)+1)37#define CMD_NOP 0x00 /* No Operation */38#define CMD_MBINIT 0x01 /* Mailbox Initialization */39#define CMD_START_SCSI 0x02 /* Start SCSI Command */40#define CMD_INQUIRY 0x04 /* Adapter Inquiry */41#define CMD_EMBOI 0x05 /* Enable MailBox Out Interrupt */42#define CMD_BUSON_TIME 0x07 /* Set Bus-On Time */43#define CMD_BUSOFF_TIME 0x08 /* Set Bus-Off Time */44#define CMD_DMASPEED 0x09 /* Set AT Bus Transfer Speed */45#define CMD_RETDEVS 0x0a /* Return Installed Devices */46#define CMD_RETCONF 0x0b /* Return Configuration Data */47#define CMD_RETSETUP 0x0d /* Return Setup Data */48#define CMD_ECHO 0x1f /* ECHO Command Data */49 50#define CMD_EXTBIOS 0x28 /* Return extend bios information only 1542C */51#define CMD_MBENABLE 0x29 /* Set Mailbox Interface enable only 1542C */52 53/* Mailbox Definition 5.2.1 and 5.2.2 */54struct mailbox {55 u8 status; /* Command/Status */56 u8 ccbptr[3]; /* msb, .., lsb */57};58 59/* This is used with scatter-gather */60struct chain {61 u8 datalen[3]; /* Size of this part of chain */62 u8 dataptr[3]; /* Location of data */63};64 65/* These belong in scsi.h also */66static inline void any2scsi(u8 *p, u32 v)67{68 p[0] = v >> 16;69 p[1] = v >> 8;70 p[2] = v;71}72 73#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )74 75#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \76 + (((long)(up)[2]) << 8) + ((long)(up)[3]) )77 78#define MAX_CDB 1279#define MAX_SENSE 1480 81/* Command Control Block (CCB), 5.3 */82struct ccb {83 u8 op; /* Command Control Block Operation Code: */84 /* 0x00: SCSI Initiator CCB, 0x01: SCSI Target CCB, */85 /* 0x02: SCSI Initiator CCB with Scatter/Gather, */86 /* 0x81: SCSI Bus Device Reset CCB */87 u8 idlun; /* Address and Direction Control: */88 /* Bits 7-5: op=0, 2: Target ID, op=1: Initiator ID */89 /* Bit 4: Outbound data transfer, length is checked */90 /* Bit 3: Inbound data transfer, length is checked */91 /* Bits 2-0: Logical Unit Number */92 u8 cdblen; /* SCSI Command Length */93 u8 rsalen; /* Request Sense Allocation Length/Disable Auto Sense */94 u8 datalen[3]; /* Data Length (MSB, ..., LSB) */95 u8 dataptr[3]; /* Data Pointer (MSB, ..., LSB) */96 u8 linkptr[3]; /* Link Pointer (MSB, ..., LSB) */97 u8 commlinkid; /* Command Linking Identifier */98 u8 hastat; /* Host Adapter Status (HASTAT) */99 u8 tarstat; /* Target Device Status (TARSTAT) */100 u8 reserved[2];101 u8 cdb[MAX_CDB + MAX_SENSE]; /* SCSI Command Descriptor Block */102 /* followed by the Auto Sense data */103};104 105#define AHA1542_REGION_SIZE 4106#define AHA1542_MAILBOXES 8107 108#endif /* _AHA1542_H_ */109