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Annotation of Gnu-Mach/i386/i386at/gpl/linux/scsi/t128.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Trantor T128/T128F/T228 defines
        !             3:  *     Note : architecturally, the T100 and T128 are different and won't work
        !             4:  *
        !             5:  * Copyright 1993, Drew Eckhardt
        !             6:  *     Visionary Computing
        !             7:  *     (Unix and Linux consulting and custom programming)
        !             8:  *     [email protected]
        !             9:  *      +1 (303) 440-4894
        !            10:  *
        !            11:  * DISTRIBUTION RELEASE 3. 
        !            12:  *
        !            13:  * For more information, please consult 
        !            14:  *
        !            15:  * Trantor Systems, Ltd.
        !            16:  * T128/T128F/T228 SCSI Host Adapter
        !            17:  * Hardware Specifications
        !            18:  * 
        !            19:  * Trantor Systems, Ltd. 
        !            20:  * 5415 Randall Place
        !            21:  * Fremont, CA 94538
        !            22:  * 1+ (415) 770-1400, FAX 1+ (415) 770-9910
        !            23:  * 
        !            24:  * and 
        !            25:  *
        !            26:  * NCR 5380 Family
        !            27:  * SCSI Protocol Controller
        !            28:  * Databook
        !            29:  *
        !            30:  * NCR Microelectronics
        !            31:  * 1635 Aeroplaza Drive
        !            32:  * Colorado Springs, CO 80916
        !            33:  * 1+ (719) 578-3400
        !            34:  * 1+ (800) 334-5454
        !            35:  */
        !            36: 
        !            37: /*
        !            38:  * $Log: t128.h,v $
        !            39:  * Revision 1.1.1.1  1997/02/25 21:27:53  thomas
        !            40:  * Initial source
        !            41:  *
        !            42:  * Revision 1.1.1.1  1996/10/30 01:40:07  thomas
        !            43:  * Imported from UK22
        !            44:  *
        !            45:  * Revision 1.1  1996/03/25  20:25:52  goel
        !            46:  * Linux driver merge.
        !            47:  *
        !            48:  */
        !            49: 
        !            50: #ifndef T128_H
        !            51: #define T128_H
        !            52: 
        !            53: #define T128_PUBLIC_RELEASE 3
        !            54: 
        !            55: #define TDEBUG_INIT    0x1
        !            56: #define TDEBUG_TRANSFER 0x2
        !            57: 
        !            58: /*
        !            59:  * The trantor boards are memory mapped. They use an NCR5380 or 
        !            60:  * equivalent (my sample board had part second sourced from ZILOG).
        !            61:  * NCR's recommended "Pseudo-DMA" architecture is used, where 
        !            62:  * a PAL drives the DMA signals on the 5380 allowing fast, blind
        !            63:  * transfers with proper handshaking. 
        !            64:  */
        !            65: 
        !            66: /*
        !            67:  * Note : a boot switch is provided for the purpose of informing the 
        !            68:  * firmware to boot or not boot from attached SCSI devices.  So, I imagine
        !            69:  * there are fewer people who've yanked the ROM like they do on the Seagate
        !            70:  * to make bootup faster, and I'll probably use this for autodetection.
        !            71:  */
        !            72: #define T_ROM_OFFSET           0
        !            73: 
        !            74: /*
        !            75:  * Note : my sample board *WAS NOT* populated with the SRAM, so this
        !            76:  * can't be used for autodetection without a ROM present.
        !            77:  */
        !            78: #define T_RAM_OFFSET           0x1800
        !            79: 
        !            80: /*
        !            81:  * All of the registers are allocated 32 bytes of address space, except
        !            82:  * for the data register (read/write to/from the 5380 in pseudo-DMA mode)
        !            83:  */ 
        !            84: #define T_CONTROL_REG_OFFSET   0x1c00  /* rw */
        !            85: #define T_CR_INT               0x10    /* Enable interrupts */
        !            86: #define T_CR_CT                        0x02    /* Reset watchdog timer */
        !            87: 
        !            88: #define T_STATUS_REG_OFFSET    0x1c20  /* ro */
        !            89: #define T_ST_BOOT              0x80    /* Boot switch */
        !            90: #define T_ST_S3                        0x40    /* User settable switches, */
        !            91: #define T_ST_S2                        0x20    /* read 0 when switch is on, 1 off */
        !            92: #define T_ST_S1                        0x10
        !            93: #define T_ST_PS2               0x08    /* Set for Microchannel 228 */
        !            94: #define T_ST_RDY               0x04    /* 5380 DRQ */
        !            95: #define T_ST_TIM               0x02    /* indicates 40us watchdog timer fired */
        !            96: #define T_ST_ZERO              0x01    /* Always zero */
        !            97: 
        !            98: #define T_5380_OFFSET          0x1d00  /* 8 registers here, see NCR5380.h */
        !            99: 
        !           100: #define T_DATA_REG_OFFSET      0x1e00  /* rw 512 bytes long */
        !           101: 
        !           102: #ifndef ASM
        !           103: int t128_abort(Scsi_Cmnd *);
        !           104: int t128_biosparam(Disk *, kdev_t, int*);
        !           105: int t128_detect(Scsi_Host_Template *);
        !           106: int t128_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
        !           107: int t128_reset(Scsi_Cmnd *);
        !           108: 
        !           109: #ifndef NULL
        !           110: #define NULL 0
        !           111: #endif
        !           112: 
        !           113: #ifndef CMD_PER_LUN
        !           114: #define CMD_PER_LUN 2
        !           115: #endif
        !           116: 
        !           117: #ifndef CAN_QUEUE
        !           118: #define CAN_QUEUE 32 
        !           119: #endif
        !           120: 
        !           121: /* 
        !           122:  * I hadn't thought of this with the earlier drivers - but to prevent
        !           123:  * macro definition conflicts, we shouldn't define all of the internal
        !           124:  * macros when this is being used solely for the host stub.
        !           125:  */
        !           126: 
        !           127: #if defined(HOSTS_C) || defined(MODULE)
        !           128: 
        !           129: #define TRANTOR_T128 {NULL, NULL, NULL, NULL, \
        !           130:        "Trantor T128/T128F/T228", t128_detect, NULL,  \
        !           131:        NULL,                                                   \
        !           132:        NULL, t128_queue_command, t128_abort, t128_reset, NULL,         \
        !           133:        t128_biosparam,                                                 \
        !           134:        /* can queue */ CAN_QUEUE, /* id */ 7, SG_ALL,                  \
        !           135:        /* cmd per lun */ CMD_PER_LUN , 0, 0, DISABLE_CLUSTERING}
        !           136: 
        !           137: #endif
        !           138: 
        !           139: #ifndef(HOSTS_C)
        !           140: 
        !           141: #define NCR5380_implementation_fields \
        !           142:     volatile unsigned char *base
        !           143: 
        !           144: #define NCR5380_local_declare() \
        !           145:     volatile unsigned char *base
        !           146: 
        !           147: #define NCR5380_setup(instance) \
        !           148:     base = (volatile unsigned char *) (instance)->base
        !           149: 
        !           150: #define T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20))
        !           151: 
        !           152: #if !(TDEBUG & TDEBUG_TRANSFER) 
        !           153: #define NCR5380_read(reg) (*(T128_address(reg)))
        !           154: #define NCR5380_write(reg, value) (*(T128_address(reg)) = (value))
        !           155: #else
        !           156: #define NCR5380_read(reg)                                              \
        !           157:     (((unsigned char) printk("scsi%d : read register %d at address %08x\n"\
        !           158:     , instance->hostno, (reg), T128_address(reg))), *(T128_address(reg)))
        !           159: 
        !           160: #define NCR5380_write(reg, value) {                                    \
        !           161:     printk("scsi%d : write %02x to register %d at address %08x\n",     \
        !           162:            instance->hostno, (value), (reg), T128_address(reg));       \
        !           163:     *(T128_address(reg)) = (value);                                    \
        !           164: }
        !           165: #endif
        !           166: 
        !           167: #define NCR5380_intr t128_intr
        !           168: #define NCR5380_queue_command t128_queue_command
        !           169: #define NCR5380_abort t128_abort
        !           170: #define NCR5380_reset t128_reset
        !           171: 
        !           172: /* 15 14 12 10 7 5 3 
        !           173:    1101 0100 1010 1000 */
        !           174:    
        !           175: #define T128_IRQS 0xc4a8 
        !           176: 
        !           177: #endif /* else def HOSTS_C */
        !           178: #endif /* ndef ASM */
        !           179: #endif /* T128_H */

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