xref: /freebsd/sys/dev/isci/scil/sati_synchronize_cache.c (revision 39ee7a7a6bdd1557b1c3532abf60d139798ac88b)
1 /*-
2  * This file is provided under a dual BSD/GPLv2 license.  When using or
3  * redistributing this file, you may do so under either license.
4  *
5  * GPL LICENSE SUMMARY
6  *
7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of version 2 of the GNU General Public License as
11  * published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
21  * The full GNU General Public License is included in this distribution
22  * in the file called LICENSE.GPL.
23  *
24  * BSD LICENSE
25  *
26  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
27  * All rights reserved.
28  *
29  * Redistribution and use in source and binary forms, with or without
30  * modification, are permitted provided that the following conditions
31  * are met:
32  *
33  *   * Redistributions of source code must retain the above copyright
34  *     notice, this list of conditions and the following disclaimer.
35  *   * Redistributions in binary form must reproduce the above copyright
36  *     notice, this list of conditions and the following disclaimer in
37  *     the documentation and/or other materials provided with the
38  *     distribution.
39  *
40  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
41  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
42  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
43  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
44  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
46  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
47  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
48  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
49  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
50  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
51  */
52 
53 #include <sys/cdefs.h>
54 __FBSDID("$FreeBSD$");
55 
56 /**
57  * @file
58  * @brief This file contains the method implementations for translating
59  *        the SCSI SYNCHRONIZE_CACHE (10, 16-byte) commands.
60  */
61 
62 #if !defined(DISABLE_SATI_SYNCHRONIZE_CACHE)
63 
64 #include <dev/isci/scil/sati_synchronize_cache.h>
65 #include <dev/isci/scil/sati_callbacks.h>
66 #include <dev/isci/scil/sati_util.h>
67 #include <dev/isci/scil/sati_translator_sequence.h>
68 
69 #include <dev/isci/scil/intel_ata.h>
70 #include <dev/isci/scil/intel_scsi.h>
71 #include <dev/isci/scil/intel_sat.h>
72 
73 //******************************************************************************
74 //* P R I V A T E   M E T H O D S
75 //******************************************************************************
76 
77 /**
78  * @brief This method performs the SCSI SYNCHRONIZE_CACHE 10 and 16 command translation
79  *        functionality common to all SYNCHRONIZE_CACHE command sizes.
80  *        This includes:
81  *        - setting the command register
82  *        - setting the device head register
83  *        - filling in fields in the SATI_TRANSLATOR_SEQUENCE object.
84  *        For more information on the parameters passed to this method,
85  *        please reference sati_translate_command().
86  *
87  * @return Indicate if the method was successfully completed.
88  * @retval SATI_SUCCESS This is returned in all other cases.
89  */
90 SATI_STATUS sati_synchronize_cache_translate_command(
91    SATI_TRANSLATOR_SEQUENCE_T * sequence,
92    void                       * scsi_io,
93    void                       * ata_io
94 )
95 {
96    U8 * cdb          = sati_cb_get_cdb_address(scsi_io);
97    U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
98 
99    sequence->type           = SATI_SEQUENCE_SYNCHRONIZE_CACHE;
100    sequence->protocol       = SAT_PROTOCOL_NON_DATA;
101    sequence->data_direction = SATI_DATA_DIRECTION_NONE;
102 
103    if (sati_get_cdb_byte(cdb, 1) & SCSI_SYNCHRONIZE_CACHE_IMMED_ENABLED)
104    {
105       //currently we ignore immed bit.
106       ;
107    }
108 
109    // Ensure the device supports the 48 bit feature set.
110    if (sequence->device->capabilities & SATI_DEVICE_CAP_48BIT_ENABLE)
111       sati_set_ata_command(register_fis, ATA_FLUSH_CACHE_EXT);
112    else
113       sati_set_ata_command(register_fis, ATA_FLUSH_CACHE);
114 
115    return SATI_SUCCESS;
116 }
117 
118 #endif // !defined(DISABLE_SATI_SYNCHRONIZE_CACHE)
119 
120