xref: /netbsd-src/sys/arch/sgimips/stand/common/iris_scsictl.c (revision d02e022db788ed4933c5904d9d6ce3af08f11fee)
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
scsi_test_unit_rdy(void)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
scsi_read_capacity(uint8_t * buf,size_t olen)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
scsi_read(uint8_t * buf,size_t olen,daddr_t blk,u_int nblk)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
scsi_write(uint8_t * buf,size_t olen,daddr_t blk,u_int nblk)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