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108 lines
3.7 KiB
108 lines
3.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _AHA1542_H_ |
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#define _AHA1542_H_ |
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#include <linux/types.h> |
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/* I/O Port interface 4.2 */ |
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/* READ */ |
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#define STATUS(base) base |
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#define STST BIT(7) /* Self Test in Progress */ |
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#define DIAGF BIT(6) /* Internal Diagnostic Failure */ |
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#define INIT BIT(5) /* Mailbox Initialization Required */ |
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#define IDLE BIT(4) /* SCSI Host Adapter Idle */ |
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#define CDF BIT(3) /* Command/Data Out Port Full */ |
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#define DF BIT(2) /* Data In Port Full */ |
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/* BIT(1) is reserved */ |
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#define INVDCMD BIT(0) /* Invalid H A Command */ |
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#define STATMASK (STST | DIAGF | INIT | IDLE | CDF | DF | INVDCMD) |
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#define INTRFLAGS(base) (STATUS(base)+2) |
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#define ANYINTR BIT(7) /* Any Interrupt */ |
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#define SCRD BIT(3) /* SCSI Reset Detected */ |
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#define HACC BIT(2) /* HA Command Complete */ |
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#define MBOA BIT(1) /* MBO Empty */ |
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#define MBIF BIT(0) /* MBI Full */ |
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#define INTRMASK (ANYINTR | SCRD | HACC | MBOA | MBIF) |
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/* WRITE */ |
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#define CONTROL(base) STATUS(base) |
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#define HRST BIT(7) /* Hard Reset */ |
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#define SRST BIT(6) /* Soft Reset */ |
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#define IRST BIT(5) /* Interrupt Reset */ |
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#define SCRST BIT(4) /* SCSI Bus Reset */ |
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/* READ/WRITE */ |
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#define DATA(base) (STATUS(base)+1) |
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#define CMD_NOP 0x00 /* No Operation */ |
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#define CMD_MBINIT 0x01 /* Mailbox Initialization */ |
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#define CMD_START_SCSI 0x02 /* Start SCSI Command */ |
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#define CMD_INQUIRY 0x04 /* Adapter Inquiry */ |
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#define CMD_EMBOI 0x05 /* Enable MailBox Out Interrupt */ |
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#define CMD_BUSON_TIME 0x07 /* Set Bus-On Time */ |
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#define CMD_BUSOFF_TIME 0x08 /* Set Bus-Off Time */ |
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#define CMD_DMASPEED 0x09 /* Set AT Bus Transfer Speed */ |
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#define CMD_RETDEVS 0x0a /* Return Installed Devices */ |
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#define CMD_RETCONF 0x0b /* Return Configuration Data */ |
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#define CMD_RETSETUP 0x0d /* Return Setup Data */ |
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#define CMD_ECHO 0x1f /* ECHO Command Data */ |
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#define CMD_EXTBIOS 0x28 /* Return extend bios information only 1542C */ |
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#define CMD_MBENABLE 0x29 /* Set Mailbox Interface enable only 1542C */ |
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/* Mailbox Definition 5.2.1 and 5.2.2 */ |
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struct mailbox { |
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u8 status; /* Command/Status */ |
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u8 ccbptr[3]; /* msb, .., lsb */ |
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}; |
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/* This is used with scatter-gather */ |
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struct chain { |
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u8 datalen[3]; /* Size of this part of chain */ |
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u8 dataptr[3]; /* Location of data */ |
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}; |
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/* These belong in scsi.h also */ |
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static inline void any2scsi(u8 *p, u32 v) |
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{ |
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p[0] = v >> 16; |
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p[1] = v >> 8; |
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p[2] = v; |
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} |
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#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) ) |
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#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \ |
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+ (((long)(up)[2]) << 8) + ((long)(up)[3]) ) |
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#define MAX_CDB 12 |
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#define MAX_SENSE 14 |
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/* Command Control Block (CCB), 5.3 */ |
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struct ccb { |
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u8 op; /* Command Control Block Operation Code: */ |
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/* 0x00: SCSI Initiator CCB, 0x01: SCSI Target CCB, */ |
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/* 0x02: SCSI Initiator CCB with Scatter/Gather, */ |
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/* 0x81: SCSI Bus Device Reset CCB */ |
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u8 idlun; /* Address and Direction Control: */ |
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/* Bits 7-5: op=0, 2: Target ID, op=1: Initiator ID */ |
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/* Bit 4: Outbound data transfer, length is checked */ |
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/* Bit 3: Inbound data transfer, length is checked */ |
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/* Bits 2-0: Logical Unit Number */ |
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u8 cdblen; /* SCSI Command Length */ |
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u8 rsalen; /* Request Sense Allocation Length/Disable Auto Sense */ |
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u8 datalen[3]; /* Data Length (MSB, ..., LSB) */ |
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u8 dataptr[3]; /* Data Pointer (MSB, ..., LSB) */ |
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u8 linkptr[3]; /* Link Pointer (MSB, ..., LSB) */ |
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u8 commlinkid; /* Command Linking Identifier */ |
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u8 hastat; /* Host Adapter Status (HASTAT) */ |
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u8 tarstat; /* Target Device Status (TARSTAT) */ |
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u8 reserved[2]; |
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u8 cdb[MAX_CDB + MAX_SENSE]; /* SCSI Command Descriptor Block */ |
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/* followed by the Auto Sense data */ |
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}; |
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#define AHA1542_REGION_SIZE 4 |
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#define AHA1542_MAILBOXES 8 |
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#endif /* _AHA1542_H_ */
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