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      1 /*	$NetBSD: iris_scsictl.c,v 1.1 2019/01/12 16:44:47 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2018 Naruaki Etomi
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 /*
     29  * Silicon Graphics "IRIS" series MIPS processors machine bootloader.
     30  * Front end of SCSI commands driver.
     31  */
     32 
     33 #include <lib/libsa/stand.h>
     34 
     35 #include "iris_machdep.h"
     36 #include "iris_scsivar.h"
     37 #include "iris_scsicmd.h"
     38 
     39 int
     40 scsi_test_unit_rdy(void)
     41 {
     42 	struct wd33c93_softc *sc = &wd33c93_softc[scsi_ctlr];
     43 	static struct scsi_cdb6 cdb = { CMD_TEST_UNIT_READY };
     44 
     45 	return wd33c93_go(sc, (uint8_t *)&cdb, sizeof(cdb), NULL, NULL);
     46 }
     47 
     48 int
     49 scsi_read_capacity(uint8_t *buf, size_t olen)
     50 {
     51 	size_t len = olen;
     52 	size_t *lenp;
     53 	lenp = &len;
     54 	struct wd33c93_softc *sc = &wd33c93_softc[scsi_ctlr];
     55 	static struct scsi_cdb10 cdb = { CMD_READ_CAPACITY };
     56 
     57 	return wd33c93_go(sc, (uint8_t *)&cdb, sizeof(cdb), buf, lenp);
     58 }
     59 
     60 int
     61 scsi_read(uint8_t *buf, size_t olen, daddr_t blk, u_int nblk)
     62 {
     63 	size_t len = olen;
     64 	size_t *lenp;
     65 	lenp = &len;
     66 	struct wd33c93_softc *sc = &wd33c93_softc[scsi_ctlr];
     67 	struct scsi_cdb10 cdb;
     68 
     69 	memset(&cdb, 0, sizeof(cdb));
     70 	cdb.cmd = CMD_READ_EXT;
     71 	cdb.lbah = blk >> 24;
     72 	cdb.lbahm = blk >> 16;
     73 	cdb.lbalm = blk >> 8;
     74 	cdb.lbal = blk;
     75 	cdb.lenh = nblk >> (8 + DEV_BSHIFT);
     76 	cdb.lenl = nblk >> DEV_BSHIFT;
     77 	wd33c93_go(sc, (uint8_t *)&cdb, sizeof(cdb), buf, lenp);
     78 
     79 	if (*lenp == olen)
     80 		return 1;
     81 
     82 	return 0;
     83 }
     84 
     85 int
     86 scsi_write(uint8_t *buf, size_t olen, daddr_t blk, u_int nblk)
     87 {
     88 	size_t len = olen;
     89 	size_t *lenp;
     90 	lenp = &len;
     91 
     92 	struct wd33c93_softc *sc = &wd33c93_softc[scsi_ctlr];
     93 	struct scsi_cdb10 cdb;
     94 
     95 	memset(&cdb, 0, sizeof(cdb));
     96 	cdb.cmd = CMD_WRITE_EXT;
     97 	cdb.lbah = blk >> 24;
     98 	cdb.lbahm = blk >> 16;
     99 	cdb.lbalm = blk >> 8;
    100 	cdb.lbal = blk;
    101 	cdb.lenh = nblk >> (8 + DEV_BSHIFT);
    102 	cdb.lenl = nblk >> DEV_BSHIFT;
    103 	wd33c93_go(sc, (uint8_t *)&cdb, sizeof(cdb), buf, lenp);
    104 
    105 	if (*lenp == olen)
    106 		return 1;
    107 
    108 	return 0;
    109 }
    110