1#ifndef _AHA1542_H 2 3/* $Id: aha1542.h,v 1.1 1992/07/24 06:27:38 root Exp root $ 4 * 5 * Header file for the adaptec 1542 driver for Linux 6 * 7 * $Log: aha1542.h,v $ 8 * Revision 1.1 1992/07/24 06:27:38 root 9 * Initial revision 10 * 11 * Revision 1.2 1992/07/04 18:41:49 root 12 * Replaced distribution with current drivers 13 * 14 * Revision 1.3 1992/06/23 23:58:20 root 15 * Fixes. 16 * 17 * Revision 1.2 1992/05/26 22:13:23 root 18 * Changed bug that prevented DMA above first 2 mbytes. 19 * 20 * Revision 1.1 1992/05/22 21:00:29 root 21 * Initial revision 22 * 23 * Revision 1.1 1992/04/24 18:01:50 root 24 * Initial revision 25 * 26 * Revision 1.1 1992/04/02 03:23:13 drew 27 * Initial revision 28 * 29 * Revision 1.3 1992/01/27 14:46:29 tthorn 30 * *** empty log message *** 31 * 32 */ 33 34#include <linux/types.h> 35 36/* I/O Port interface 4.2 */ 37/* READ */ 38#define STATUS(base) base 39#define STST 0x80 /* Self Test in Progress */ 40#define DIAGF 0x40 /* Internal Diagnostic Failure */ 41#define INIT 0x20 /* Mailbox Initialization Required */ 42#define IDLE 0x10 /* SCSI Host Adapter Idle */ 43#define CDF 0x08 /* Command/Data Out Port Full */ 44#define DF 0x04 /* Data In Port Full */ 45#define INVDCMD 0x01 /* Invalid H A Command */ 46#define STATMASK 0xfd /* 0x02 is reserved */ 47 48#define INTRFLAGS(base) (STATUS(base)+2) 49#define ANYINTR 0x80 /* Any Interrupt */ 50#define SCRD 0x08 /* SCSI Reset Detected */ 51#define HACC 0x04 /* HA Command Complete */ 52#define MBOA 0x02 /* MBO Empty */ 53#define MBIF 0x01 /* MBI Full */ 54#define INTRMASK 0x8f 55 56/* WRITE */ 57#define CONTROL(base) STATUS(base) 58#define HRST 0x80 /* Hard Reset */ 59#define SRST 0x40 /* Soft Reset */ 60#define IRST 0x20 /* Interrupt Reset */ 61#define SCRST 0x10 /* SCSI Bus Reset */ 62 63/* READ/WRITE */ 64#define DATA(base) (STATUS(base)+1) 65#define CMD_NOP 0x00 /* No Operation */ 66#define CMD_MBINIT 0x01 /* Mailbox Initialization */ 67#define CMD_START_SCSI 0x02 /* Start SCSI Command */ 68#define CMD_INQUIRY 0x04 /* Adapter Inquiry */ 69#define CMD_EMBOI 0x05 /* Enable MailBox Out Interrupt */ 70#define CMD_BUSON_TIME 0x07 /* Set Bus-On Time */ 71#define CMD_BUSOFF_TIME 0x08 /* Set Bus-Off Time */ 72#define CMD_DMASPEED 0x09 /* Set AT Bus Transfer Speed */ 73#define CMD_RETDEVS 0x0a /* Return Installed Devices */ 74#define CMD_RETCONF 0x0b /* Return Configuration Data */ 75#define CMD_RETSETUP 0x0d /* Return Setup Data */ 76#define CMD_ECHO 0x1f /* ECHO Command Data */ 77 78#define CMD_EXTBIOS 0x28 /* Return extend bios information only 1542C */ 79#define CMD_MBENABLE 0x29 /* Set Mailbox Interface enable only 1542C */ 80 81/* Mailbox Definition 5.2.1 and 5.2.2 */ 82struct mailbox { 83 unchar status; /* Command/Status */ 84 unchar ccbptr[3]; /* msb, .., lsb */ 85}; 86 87/* This is used with scatter-gather */ 88struct chain { 89 unchar datalen[3]; /* Size of this part of chain */ 90 unchar dataptr[3]; /* Location of data */ 91}; 92 93/* These belong in scsi.h also */ 94static inline void any2scsi(u8 *p, u32 v) 95{ 96 p[0] = v >> 16; 97 p[1] = v >> 8; 98 p[2] = v; 99} 100 101#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) ) 102 103#define xany2scsi(up, p) \ 104(up)[0] = ((long)(p)) >> 24; \ 105(up)[1] = ((long)(p)) >> 16; \ 106(up)[2] = ((long)(p)) >> 8; \ 107(up)[3] = ((long)(p)); 108 109#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \ 110 + (((long)(up)[2]) << 8) + ((long)(up)[3]) ) 111 112#define MAX_CDB 12 113#define MAX_SENSE 14 114 115struct ccb { /* Command Control Block 5.3 */ 116 unchar op; /* Command Control Block Operation Code */ 117 unchar idlun; /* op=0,2:Target Id, op=1:Initiator Id */ 118 /* Outbound data transfer, length is checked*/ 119 /* Inbound data transfer, length is checked */ 120 /* Logical Unit Number */ 121 unchar cdblen; /* SCSI Command Length */ 122 unchar rsalen; /* Request Sense Allocation Length/Disable */ 123 unchar datalen[3]; /* Data Length (msb, .., lsb) */ 124 unchar dataptr[3]; /* Data Pointer */ 125 unchar linkptr[3]; /* Link Pointer */ 126 unchar commlinkid; /* Command Linking Identifier */ 127 unchar hastat; /* Host Adapter Status (HASTAT) */ 128 unchar tarstat; /* Target Device Status */ 129 unchar reserved[2]; 130 unchar cdb[MAX_CDB+MAX_SENSE];/* SCSI Command Descriptor Block */ 131 /* REQUEST SENSE */ 132}; 133 134static int aha1542_detect(struct scsi_host_template *); 135static int aha1542_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); 136static int aha1542_bus_reset(Scsi_Cmnd * SCpnt); 137static int aha1542_dev_reset(Scsi_Cmnd * SCpnt); 138static int aha1542_host_reset(Scsi_Cmnd * SCpnt); 139#if 0 140static int aha1542_old_abort(Scsi_Cmnd * SCpnt); 141static int aha1542_old_reset(Scsi_Cmnd *, unsigned int); 142#endif 143static int aha1542_biosparam(struct scsi_device *, struct block_device *, 144 sector_t, int *); 145 146#define AHA1542_MAILBOXES 8 147#define AHA1542_SCATTER 16 148#define AHA1542_CMDLUN 1 149 150#endif 151