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) base 10 #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 */ 54 struct mailbox { 55 u8 status; /* Command/Status */ 56 u8 ccbptr[3]; /* msb, .., lsb */ 57 }; 58 59 /* This is used with scatter-gather */ 60 struct 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 */ any2scsi(u8 * p,u32 v)66 static 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 12 79 #define MAX_SENSE 14 80 81 /* Command Control Block (CCB), 5.3 */ 82 struct 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 4 106 #define AHA1542_MAILBOXES 8 107 108 #endif /* _AHA1542_H_ */ 109
