aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/isci/task.h
blob: 9c06cbad1d26cad25e99a3cc4a33969193379ca7 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
/*
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * BSD LICENSE
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *   * Neither the name of Intel Corporation nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef _ISCI_TASK_H_
#define _ISCI_TASK_H_

#include <scsi/sas_ata.h>
#include "host.h"

#define ISCI_TERMINATION_TIMEOUT_MSEC 500

struct isci_request;

/**
 * enum isci_tmf_function_codes - This enum defines the possible preparations
 *    of task management requests.
 *
 *
 */
enum isci_tmf_function_codes {

	isci_tmf_func_none      = 0,
	isci_tmf_ssp_task_abort = TMF_ABORT_TASK,
	isci_tmf_ssp_lun_reset  = TMF_LU_RESET,
};

/**
 * struct isci_tmf - This class represents the task management object which
 *    acts as an interface to libsas for processing task management requests
 *
 *
 */
struct isci_tmf {

	struct completion *complete;
	enum sas_protocol proto;
	union {
		struct ssp_response_iu resp_iu;
		struct dev_to_host_fis d2h_fis;
		u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
	} resp;
	unsigned char lun[8];
	u16 io_tag;
	enum isci_tmf_function_codes tmf_code;
	int status;
};

static inline void isci_print_tmf(struct isci_host *ihost, struct isci_tmf *tmf)
{
	if (SAS_PROTOCOL_SATA == tmf->proto)
		dev_dbg(&ihost->pdev->dev,
			"%s: status = %x\n"
			"tmf->resp.d2h_fis.status = %x\n"
			"tmf->resp.d2h_fis.error = %x\n",
			__func__,
			tmf->status,
			tmf->resp.d2h_fis.status,
			tmf->resp.d2h_fis.error);
	else
		dev_dbg(&ihost->pdev->dev,
			"%s: status = %x\n"
			"tmf->resp.resp_iu.data_present = %x\n"
			"tmf->resp.resp_iu.status = %x\n"
			"tmf->resp.resp_iu.data_length = %x\n"
			"tmf->resp.resp_iu.data[0] = %x\n"
			"tmf->resp.resp_iu.data[1] = %x\n"
			"tmf->resp.resp_iu.data[2] = %x\n"
			"tmf->resp.resp_iu.data[3] = %x\n",
			__func__,
			tmf->status,
			tmf->resp.resp_iu.datapres,
			tmf->resp.resp_iu.status,
			be32_to_cpu(tmf->resp.resp_iu.response_data_len),
			tmf->resp.resp_iu.resp_data[0],
			tmf->resp.resp_iu.resp_data[1],
			tmf->resp.resp_iu.resp_data[2],
			tmf->resp.resp_iu.resp_data[3]);
}


int isci_task_execute_task(
	struct sas_task *task,
	int num,
	gfp_t gfp_flags);

int isci_task_abort_task(
	struct sas_task *task);

int isci_task_abort_task_set(
	struct domain_device *d_device,
	u8 *lun);

int isci_task_clear_aca(
	struct domain_device *d_device,
	u8 *lun);

int isci_task_clear_task_set(
	struct domain_device *d_device,
	u8 *lun);

int isci_task_query_task(
	struct sas_task *task);

int isci_task_lu_reset(
	struct domain_device *d_device,
	u8 *lun);

int isci_task_clear_nexus_port(
	struct asd_sas_port *port);

int isci_task_clear_nexus_ha(
	struct sas_ha_struct *ha);

int isci_task_I_T_nexus_reset(
	struct domain_device *d_device);

void isci_task_request_complete(
	struct isci_host *isci_host,
	struct isci_request *request,
	enum sci_task_status completion_status);

u16 isci_task_ssp_request_get_io_tag_to_manage(
	struct isci_request *request);

u8 isci_task_ssp_request_get_function(
	struct isci_request *request);


void *isci_task_ssp_request_get_response_data_address(
	struct isci_request *request);

u32 isci_task_ssp_request_get_response_data_length(
	struct isci_request *request);

int isci_queuecommand(
	struct scsi_cmnd *scsi_cmd,
	void (*donefunc)(struct scsi_cmnd *));

#endif /* !defined(_SCI_TASK_H_) */