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-rw-r--r--drivers/scsi/aha1542.h108
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/scsi/aha1542.h b/drivers/scsi/aha1542.h
new file mode 100644
index 0000000000..92a5f9896a
--- /dev/null
+++ b/drivers/scsi/aha1542.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _AHA1542_H_
+#define _AHA1542_H_
+
+#include <linux/types.h>
+
+/* I/O Port interface 4.2 */
+/* READ */
+#define STATUS(base) base
+#define STST BIT(7) /* Self Test in Progress */
+#define DIAGF BIT(6) /* Internal Diagnostic Failure */
+#define INIT BIT(5) /* Mailbox Initialization Required */
+#define IDLE BIT(4) /* SCSI Host Adapter Idle */
+#define CDF BIT(3) /* Command/Data Out Port Full */
+#define DF BIT(2) /* Data In Port Full */
+/* BIT(1) is reserved */
+#define INVDCMD BIT(0) /* Invalid H A Command */
+#define STATMASK (STST | DIAGF | INIT | IDLE | CDF | DF | INVDCMD)
+
+#define INTRFLAGS(base) (STATUS(base)+2)
+#define ANYINTR BIT(7) /* Any Interrupt */
+#define SCRD BIT(3) /* SCSI Reset Detected */
+#define HACC BIT(2) /* HA Command Complete */
+#define MBOA BIT(1) /* MBO Empty */
+#define MBIF BIT(0) /* MBI Full */
+#define INTRMASK (ANYINTR | SCRD | HACC | MBOA | MBIF)
+
+/* WRITE */
+#define CONTROL(base) STATUS(base)
+#define HRST BIT(7) /* Hard Reset */
+#define SRST BIT(6) /* Soft Reset */
+#define IRST BIT(5) /* Interrupt Reset */
+#define SCRST BIT(4) /* SCSI Bus Reset */
+
+/* READ/WRITE */
+#define DATA(base) (STATUS(base)+1)
+#define CMD_NOP 0x00 /* No Operation */
+#define CMD_MBINIT 0x01 /* Mailbox Initialization */
+#define CMD_START_SCSI 0x02 /* Start SCSI Command */
+#define CMD_INQUIRY 0x04 /* Adapter Inquiry */
+#define CMD_EMBOI 0x05 /* Enable MailBox Out Interrupt */
+#define CMD_BUSON_TIME 0x07 /* Set Bus-On Time */
+#define CMD_BUSOFF_TIME 0x08 /* Set Bus-Off Time */
+#define CMD_DMASPEED 0x09 /* Set AT Bus Transfer Speed */
+#define CMD_RETDEVS 0x0a /* Return Installed Devices */
+#define CMD_RETCONF 0x0b /* Return Configuration Data */
+#define CMD_RETSETUP 0x0d /* Return Setup Data */
+#define CMD_ECHO 0x1f /* ECHO Command Data */
+
+#define CMD_EXTBIOS 0x28 /* Return extend bios information only 1542C */
+#define CMD_MBENABLE 0x29 /* Set Mailbox Interface enable only 1542C */
+
+/* Mailbox Definition 5.2.1 and 5.2.2 */
+struct mailbox {
+ u8 status; /* Command/Status */
+ u8 ccbptr[3]; /* msb, .., lsb */
+};
+
+/* This is used with scatter-gather */
+struct chain {
+ u8 datalen[3]; /* Size of this part of chain */
+ u8 dataptr[3]; /* Location of data */
+};
+
+/* These belong in scsi.h also */
+static inline void any2scsi(u8 *p, u32 v)
+{
+ p[0] = v >> 16;
+ p[1] = v >> 8;
+ p[2] = v;
+}
+
+#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )
+
+#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
+ + (((long)(up)[2]) << 8) + ((long)(up)[3]) )
+
+#define MAX_CDB 12
+#define MAX_SENSE 14
+
+/* Command Control Block (CCB), 5.3 */
+struct ccb {
+ u8 op; /* Command Control Block Operation Code: */
+ /* 0x00: SCSI Initiator CCB, 0x01: SCSI Target CCB, */
+ /* 0x02: SCSI Initiator CCB with Scatter/Gather, */
+ /* 0x81: SCSI Bus Device Reset CCB */
+ u8 idlun; /* Address and Direction Control: */
+ /* Bits 7-5: op=0, 2: Target ID, op=1: Initiator ID */
+ /* Bit 4: Outbound data transfer, length is checked */
+ /* Bit 3: Inbound data transfer, length is checked */
+ /* Bits 2-0: Logical Unit Number */
+ u8 cdblen; /* SCSI Command Length */
+ u8 rsalen; /* Request Sense Allocation Length/Disable Auto Sense */
+ u8 datalen[3]; /* Data Length (MSB, ..., LSB) */
+ u8 dataptr[3]; /* Data Pointer (MSB, ..., LSB) */
+ u8 linkptr[3]; /* Link Pointer (MSB, ..., LSB) */
+ u8 commlinkid; /* Command Linking Identifier */
+ u8 hastat; /* Host Adapter Status (HASTAT) */
+ u8 tarstat; /* Target Device Status (TARSTAT) */
+ u8 reserved[2];
+ u8 cdb[MAX_CDB + MAX_SENSE]; /* SCSI Command Descriptor Block */
+ /* followed by the Auto Sense data */
+};
+
+#define AHA1542_REGION_SIZE 4
+#define AHA1542_MAILBOXES 8
+
+#endif /* _AHA1542_H_ */