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
39int
40scsi_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
48int
49scsi_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
60int
61scsi_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
85int
86scsi_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