LXR linux/drivers/scsi/aha1542.h

   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 */
  54struct mailbox {
  55        u8 status;      /* Command/Status */
  56        u8 ccbptr[3];   /* msb, .., lsb */
  57};
  58
  59/* This is used with scatter-gather */
  60struct 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 */
  66static 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
  81struct ccb {            /* Command Control Block 5.3 */
  82        u8 op;          /* Command Control Block Operation Code */
  83        u8 idlun;       /* op=0,2:Target Id, op=1:Initiator Id */
  84                        /* Outbound data transfer, length is checked*/
  85                        /* Inbound data transfer, length is checked */
  86                        /* Logical Unit Number */
  87        u8 cdblen;      /* SCSI Command Length */
  88        u8 rsalen;      /* Request Sense Allocation Length/Disable */
  89        u8 datalen[3];  /* Data Length (msb, .., lsb) */
  90        u8 dataptr[3];  /* Data Pointer */
  91        u8 linkptr[3];  /* Link Pointer */
  92        u8 commlinkid;  /* Command Linking Identifier */
  93        u8 hastat;      /* Host Adapter Status (HASTAT) */
  94        u8 tarstat;     /* Target Device Status */
  95        u8 reserved[2];
  96        u8 cdb[MAX_CDB+MAX_SENSE];      /* SCSI Command Descriptor Block */
  97                                        /* REQUEST SENSE */
  98};
  99
 100#define AHA1542_REGION_SIZE 4
 101#define AHA1542_MAILBOXES 8
 102
 103#endif /* _AHA1542_H_ */
 104