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 BIT(7) /* Self Test in Progress */ 40 #define DIAGF BIT(6) /* Internal Diagnostic Failure */ 41 #define INIT BIT(5) /* Mailbox Initialization Required */ 42 #define IDLE BIT(4) /* SCSI Host Adapter Idle */ 43 #define CDF BIT(3) /* Command/Data Out Port Full */ 44 #define DF BIT(2) /* Data In Port Full */ 45 /* BIT(1) is reserved */ 46 #define INVDCMD BIT(0) /* Invalid H A Command */ 47 #define STATMASK (STST | DIAGF | INIT | IDLE | CDF | DF | INVDCMD) 48 49 #define INTRFLAGS(base) (STATUS(base)+2) 50 #define ANYINTR BIT(7) /* Any Interrupt */ 51 #define SCRD BIT(3) /* SCSI Reset Detected */ 52 #define HACC BIT(2) /* HA Command Complete */ 53 #define MBOA BIT(1) /* MBO Empty */ 54 #define MBIF BIT(0) /* MBI Full */ 55 #define INTRMASK (ANYINTR | SCRD | HACC | MBOA | MBIF) 56 57 /* WRITE */ 58 #define CONTROL(base) STATUS(base) 59 #define HRST BIT(7) /* Hard Reset */ 60 #define SRST BIT(6) /* Soft Reset */ 61 #define IRST BIT(5) /* Interrupt Reset */ 62 #define SCRST BIT(4) /* SCSI Bus Reset */ 63 64 /* READ/WRITE */ 65 #define DATA(base) (STATUS(base)+1) 66 #define CMD_NOP 0x00 /* No Operation */ 67 #define CMD_MBINIT 0x01 /* Mailbox Initialization */ 68 #define CMD_START_SCSI 0x02 /* Start SCSI Command */ 69 #define CMD_INQUIRY 0x04 /* Adapter Inquiry */ 70 #define CMD_EMBOI 0x05 /* Enable MailBox Out Interrupt */ 71 #define CMD_BUSON_TIME 0x07 /* Set Bus-On Time */ 72 #define CMD_BUSOFF_TIME 0x08 /* Set Bus-Off Time */ 73 #define CMD_DMASPEED 0x09 /* Set AT Bus Transfer Speed */ 74 #define CMD_RETDEVS 0x0a /* Return Installed Devices */ 75 #define CMD_RETCONF 0x0b /* Return Configuration Data */ 76 #define CMD_RETSETUP 0x0d /* Return Setup Data */ 77 #define CMD_ECHO 0x1f /* ECHO Command Data */ 78 79 #define CMD_EXTBIOS 0x28 /* Return extend bios information only 1542C */ 80 #define CMD_MBENABLE 0x29 /* Set Mailbox Interface enable only 1542C */ 81 82 /* Mailbox Definition 5.2.1 and 5.2.2 */ 83 struct mailbox { 84 u8 status; /* Command/Status */ 85 u8 ccbptr[3]; /* msb, .., lsb */ 86 }; 87 88 /* This is used with scatter-gather */ 89 struct chain { 90 u8 datalen[3]; /* Size of this part of chain */ 91 u8 dataptr[3]; /* Location of data */ 92 }; 93 94 /* These belong in scsi.h also */ 95 static inline void any2scsi(u8 *p, u32 v) 96 { 97 p[0] = v >> 16; 98 p[1] = v >> 8; 99 p[2] = v; 100 } 101 102 #define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) ) 103 104 #define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \ 105 + (((long)(up)[2]) << 8) + ((long)(up)[3]) ) 106 107 #define MAX_CDB 12 108 #define MAX_SENSE 14 109 110 struct ccb { /* Command Control Block 5.3 */ 111 u8 op; /* Command Control Block Operation Code */ 112 u8 idlun; /* op=0,2:Target Id, op=1:Initiator Id */ 113 /* Outbound data transfer, length is checked*/ 114 /* Inbound data transfer, length is checked */ 115 /* Logical Unit Number */ 116 u8 cdblen; /* SCSI Command Length */ 117 u8 rsalen; /* Request Sense Allocation Length/Disable */ 118 u8 datalen[3]; /* Data Length (msb, .., lsb) */ 119 u8 dataptr[3]; /* Data Pointer */ 120 u8 linkptr[3]; /* Link Pointer */ 121 u8 commlinkid; /* Command Linking Identifier */ 122 u8 hastat; /* Host Adapter Status (HASTAT) */ 123 u8 tarstat; /* Target Device Status */ 124 u8 reserved[2]; 125 u8 cdb[MAX_CDB+MAX_SENSE]; /* SCSI Command Descriptor Block */ 126 /* REQUEST SENSE */ 127 }; 128 129 #define AHA1542_REGION_SIZE 4 130 #define AHA1542_MAILBOXES 8 131 132 #endif 133