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authorDan Williams <dan.j.williams@intel.com>2011-05-10 05:28:45 -0400
committerDan Williams <dan.j.williams@intel.com>2011-07-03 07:04:47 -0400
commitf1f52e75939b56c40b3d153ae99faf2720250242 (patch)
tree9c5ba4f8bb6a589c6a038dac5bbba280f9de3ebe
parent3bff9d54ecba84e538da822349a9a6fd6e534539 (diff)
isci: uplevel request infrastructure
* Consolidate tiny header files * Move files out of core/ (drop core/scic_sds_ prefix) * Merge core/scic_sds_request.[ch] into request.[ch] * Cleanup request.c namespace (clean forward declarations and global namespace pollution) Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat
-rw-r--r--drivers/scsi/isci/Makefile8
-rw-r--r--drivers/scsi/isci/core/sci_util.c86
-rw-r--r--drivers/scsi/isci/core/sci_util.h97
-rw-r--r--drivers/scsi/isci/core/scic_io_request.h226
-rw-r--r--drivers/scsi/isci/core/scic_sds_phy.c1
-rw-r--r--drivers/scsi/isci/core/scic_sds_port.c2
-rw-r--r--drivers/scsi/isci/core/scic_sds_request.c1523
-rw-r--r--drivers/scsi/isci/core/scic_sds_request.h491
-rw-r--r--drivers/scsi/isci/core/scic_sds_smp_request.h67
-rw-r--r--drivers/scsi/isci/core/scic_sds_stp_packet_request.h113
-rw-r--r--drivers/scsi/isci/core/scic_sds_stp_pio_request.h104
-rw-r--r--drivers/scsi/isci/core/scic_task_request.h104
-rw-r--r--drivers/scsi/isci/host.c2
-rw-r--r--drivers/scsi/isci/isci.h19
-rw-r--r--drivers/scsi/isci/port.c1
-rw-r--r--drivers/scsi/isci/remote_device.c3
-rw-r--r--drivers/scsi/isci/remote_node_context.c1
-rw-r--r--drivers/scsi/isci/remote_node_table.c1
-rw-r--r--drivers/scsi/isci/request.c2016
-rw-r--r--drivers/scsi/isci/request.h442
-rw-r--r--drivers/scsi/isci/sata.c2
-rw-r--r--drivers/scsi/isci/smp_request.c (renamed from drivers/scsi/isci/core/scic_sds_smp_request.c)4
-rw-r--r--drivers/scsi/isci/ssp_request.c (renamed from drivers/scsi/isci/core/scic_sds_ssp_request.c)4
-rw-r--r--drivers/scsi/isci/stp_request.c (renamed from drivers/scsi/isci/core/scic_sds_stp_request.c)6
-rw-r--r--drivers/scsi/isci/stp_request.h (renamed from drivers/scsi/isci/core/scic_sds_stp_request.h)61
-rw-r--r--drivers/scsi/isci/task.c3
-rw-r--r--drivers/scsi/isci/unsolicited_frame_control.c5
27 files changed, 2194 insertions, 3198 deletions
diff --git a/drivers/scsi/isci/Makefile b/drivers/scsi/isci/Makefile
index cfc640f9dc3f..a7d1eb33eca2 100644
--- a/drivers/scsi/isci/Makefile
+++ b/drivers/scsi/isci/Makefile
@@ -7,11 +7,9 @@ isci-objs := init.o phy.o request.o sata.o \
7 remote_node_context.o \ 7 remote_node_context.o \
8 remote_node_table.o \ 8 remote_node_table.o \
9 unsolicited_frame_control.o \ 9 unsolicited_frame_control.o \
10 core/scic_sds_request.o \ 10 stp_request.o \
11 core/scic_sds_stp_request.o \ 11 ssp_request.o \
12 smp_request.o \
12 core/scic_sds_port.o \ 13 core/scic_sds_port.o \
13 core/scic_sds_port_configuration_agent.o \ 14 core/scic_sds_port_configuration_agent.o \
14 core/scic_sds_phy.o \ 15 core/scic_sds_phy.o \
15 core/scic_sds_ssp_request.o \
16 core/scic_sds_smp_request.o \
17 core/sci_util.o
diff --git a/drivers/scsi/isci/core/sci_util.c b/drivers/scsi/isci/core/sci_util.c
deleted file mode 100644
index 595d8da1abba..000000000000
--- a/drivers/scsi/isci/core/sci_util.c
+++ /dev/null
@@ -1,86 +0,0 @@
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 * * Neither the name of Intel Corporation nor the names of its
40 * contributors may be used to endorse or promote products derived
41 * from this software without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 */
55
56#include <linux/kernel.h>
57#include "sci_util.h"
58#include "request.h"
59
60void *scic_request_get_virt_addr(struct scic_sds_request *sci_req, dma_addr_t phys_addr)
61{
62 struct isci_request *ireq = sci_req_to_ireq(sci_req);
63 dma_addr_t offset;
64
65 BUG_ON(phys_addr < ireq->request_daddr);
66
67 offset = phys_addr - ireq->request_daddr;
68
69 BUG_ON(offset >= sizeof(*ireq));
70
71 return (char *)ireq + offset;
72}
73
74dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request,
75 void *virt_addr)
76{
77 struct isci_request *isci_request = sci_req_to_ireq(sds_request);
78
79 char *requested_addr = (char *)virt_addr;
80 char *base_addr = (char *)isci_request;
81
82 BUG_ON(requested_addr < base_addr);
83 BUG_ON((requested_addr - base_addr) >= sizeof(*isci_request));
84
85 return isci_request->request_daddr + (requested_addr - base_addr);
86}
diff --git a/drivers/scsi/isci/core/sci_util.h b/drivers/scsi/isci/core/sci_util.h
deleted file mode 100644
index 0f9dd0fe1266..000000000000
--- a/drivers/scsi/isci/core/sci_util.h
+++ /dev/null
@@ -1,97 +0,0 @@
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 * * Neither the name of Intel Corporation nor the names of its
40 * contributors may be used to endorse or promote products derived
41 * from this software without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 */
55
56#ifndef _SCI_UTIL_H_
57#define _SCI_UTIL_H_
58
59#include "scic_sds_request.h"
60
61#define SCIC_BUILD_DWORD(char_buffer) \
62 (\
63 ((char_buffer)[0] << 24) \
64 | ((char_buffer)[1] << 16) \
65 | ((char_buffer)[2] << 8) \
66 | ((char_buffer)[3]) \
67 )
68
69#define sci_cb_make_physical_address(physical_addr, addr_upper, addr_lower) \
70 ((physical_addr) = (addr_lower) | ((u64)addr_upper) << 32)
71
72/**
73 * sci_swab32_cpy - convert between scsi and scu-hardware byte format
74 * @dest: receive the 4-byte endian swapped version of src
75 * @src: word aligned source buffer
76 *
77 * scu hardware handles SSP/SMP control, response, and unidentified
78 * frames in "big endian dword" order. Regardless of host endian this
79 * is always a swab32()-per-dword conversion of the standard definition,
80 * i.e. single byte fields swapped and multi-byte fields in little-
81 * endian
82 */
83static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
84{
85 u32 *dest = _dest, *src = _src;
86
87 while (--word_cnt >= 0)
88 dest[word_cnt] = swab32(src[word_cnt]);
89}
90
91void *scic_request_get_virt_addr(struct scic_sds_request *sds_request,
92 dma_addr_t phys_addr);
93
94dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request,
95 void *virt_addr);
96
97#endif /* _SCI_UTIL_H_ */
diff --git a/drivers/scsi/isci/core/scic_io_request.h b/drivers/scsi/isci/core/scic_io_request.h
deleted file mode 100644
index a4664cc3c576..000000000000
--- a/drivers/scsi/isci/core/scic_io_request.h
+++ /dev/null
@@ -1,226 +0,0 @@
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 * * Neither the name of Intel Corporation nor the names of its
40 * contributors may be used to endorse or promote products derived
41 * from this software without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 */
55
56#ifndef _SCIC_IO_REQUEST_H_
57#define _SCIC_IO_REQUEST_H_
58
59#include <linux/kernel.h>
60
61struct scic_sds_request;
62struct scic_sds_remote_device;
63struct scic_sds_controller;
64
65/**
66 * This enumeration specifies the transport protocol utilized for the request.
67 *
68 *
69 */
70typedef enum {
71 /**
72 * This enumeration constant indicates that no protocol has yet been
73 * set.
74 */
75 SCIC_NO_PROTOCOL,
76
77 /**
78 * This enumeration constant indicates that the protocol utilized
79 * is the Serial Management Protocol.
80 */
81 SCIC_SMP_PROTOCOL,
82
83 /**
84 * This enumeration constant indicates that the protocol utilized
85 * is the Serial SCSI Protocol.
86 */
87 SCIC_SSP_PROTOCOL,
88
89 /**
90 * This enumeration constant indicates that the protocol utilized
91 * is the Serial-ATA Tunneling Protocol.
92 */
93 SCIC_STP_PROTOCOL
94
95} SCIC_TRANSPORT_PROTOCOL;
96
97enum sci_status scic_io_request_construct(
98 struct scic_sds_controller *scic_controller,
99 struct scic_sds_remote_device *scic_remote_device,
100 u16 io_tag, struct scic_sds_request *sci_req);
101
102/**
103 * scic_io_request_construct_basic_ssp() - This method is called by the SCI
104 * user to build an SSP IO request.
105 * @scic_io_request: This parameter specifies the handle to the io request
106 * object to be built.
107 *
108 * - The user must have previously called scic_io_request_construct() on the
109 * supplied IO request. Indicate if the controller successfully built the IO
110 * request. SCI_SUCCESS This value is returned if the IO request was
111 * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
112 * if the remote_device does not support the SSP protocol.
113 * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
114 * properly set the association between the SCIC IO request and the user's IO
115 * request.
116 */
117enum sci_status scic_io_request_construct_basic_ssp(
118 struct scic_sds_request *scic_io_request);
119
120
121
122
123
124/**
125 * scic_io_request_construct_basic_sata() - This method is called by the SCI
126 * Core user to build an STP IO request.
127 * @scic_io_request: This parameter specifies the handle to the io request
128 * object to be built.
129 *
130 * - The user must have previously called scic_io_request_construct() on the
131 * supplied IO request. Indicate if the controller successfully built the IO
132 * request. SCI_SUCCESS This value is returned if the IO request was
133 * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
134 * if the remote_device does not support the STP protocol.
135 * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
136 * properly set the association between the SCIC IO request and the user's IO
137 * request.
138 */
139enum sci_status scic_io_request_construct_basic_sata(
140 struct scic_sds_request *scic_io_request);
141
142
143
144
145/**
146 * scic_io_request_construct_smp() - This method is called by the SCI user to
147 * build an SMP IO request.
148 * @scic_io_request: This parameter specifies the handle to the io request
149 * object to be built.
150 *
151 * - The user must have previously called scic_io_request_construct() on the
152 * supplied IO request. Indicate if the controller successfully built the IO
153 * request. SCI_SUCCESS This value is returned if the IO request was
154 * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
155 * if the remote_device does not support the SMP protocol.
156 * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
157 * properly set the association between the SCIC IO request and the user's IO
158 * request.
159 */
160enum sci_status scic_io_request_construct_smp(
161 struct scic_sds_request *scic_io_request);
162
163
164
165/**
166 * scic_request_get_controller_status() - This method returns the controller
167 * specific IO/Task request status. These status values are unique to the
168 * specific controller being managed by the SCIC.
169 * @io_request: the handle to the IO or task management request object for
170 * which to retrieve the status.
171 *
172 * This method returns a value indicating the controller specific request
173 * status.
174 */
175u32 scic_request_get_controller_status(
176 struct scic_sds_request *io_request);
177
178/**
179 * scic_io_request_get_io_tag() - This method will return the IO tag utilized
180 * by the IO request.
181 * @scic_io_request: This parameter specifies the handle to the io request
182 * object for which to return the IO tag.
183 *
184 * An unsigned integer representing the IO tag being utilized.
185 * SCI_CONTROLLER_INVALID_IO_TAG This value is returned if the IO does not
186 * currently have an IO tag allocated to it. All return other values indicate a
187 * legitimate tag.
188 */
189u16 scic_io_request_get_io_tag(
190 struct scic_sds_request *scic_io_request);
191
192
193/**
194 * scic_stp_io_request_set_ncq_tag() - This method will assign an NCQ tag to
195 * the io request object. The caller of this function must make sure that
196 * only valid NCQ tags are assigned to the io request object.
197 * @scic_io_request: This parameter specifies the handle to the io request
198 * object to which to assign the ncq tag.
199 * @ncq_tag: This parameter specifies the NCQ tag to be utilized for the
200 * supplied core IO request. It is up to the user to make sure that this is
201 * a valid NCQ tag.
202 *
203 * none This function is only valid for SATA NCQ requests.
204 */
205void scic_stp_io_request_set_ncq_tag(
206 struct scic_sds_request *scic_io_request,
207 u16 ncq_tag);
208
209/**
210 * scic_io_request_get_number_of_bytes_transferred() - This method will return
211 * the number of bytes transferred from the SCU
212 * @scic_io_request: This parameter specifies the handle to the io request
213 * whose data length was not eqaul to the data length specified in the
214 * request. When the driver gets an early io completion status from the
215 * hardware, this routine should be called to get the actual number of bytes
216 * transferred
217 *
218 * The return is the number of bytes transferred when the data legth is not
219 * equal to the specified length in the io request
220 */
221u32 scic_io_request_get_number_of_bytes_transferred(
222 struct scic_sds_request *scic_io_request);
223
224
225#endif /* _SCIC_IO_REQUEST_H_ */
226
diff --git a/drivers/scsi/isci/core/scic_sds_phy.c b/drivers/scsi/isci/core/scic_sds_phy.c
index 6b49d94bc9cc..150509b0c69e 100644
--- a/drivers/scsi/isci/core/scic_sds_phy.c
+++ b/drivers/scsi/isci/core/scic_sds_phy.c
@@ -61,7 +61,6 @@
61#include "scic_sds_phy.h" 61#include "scic_sds_phy.h"
62#include "scic_sds_port.h" 62#include "scic_sds_port.h"
63#include "remote_node_context.h" 63#include "remote_node_context.h"
64#include "sci_util.h"
65#include "scu_event_codes.h" 64#include "scu_event_codes.h"
66#include "timers.h" 65#include "timers.h"
67 66
diff --git a/drivers/scsi/isci/core/scic_sds_port.c b/drivers/scsi/isci/core/scic_sds_port.c
index 652917eeead4..a9f3ce111b86 100644
--- a/drivers/scsi/isci/core/scic_sds_port.c
+++ b/drivers/scsi/isci/core/scic_sds_port.c
@@ -60,9 +60,9 @@
60#include "scic_sds_port.h" 60#include "scic_sds_port.h"
61#include "remote_device.h" 61#include "remote_device.h"
62#include "remote_node_context.h" 62#include "remote_node_context.h"
63#include "scic_sds_request.h"
64#include "registers.h" 63#include "registers.h"
65#include "timers.h" 64#include "timers.h"
65#include "scu_task_context.h"
66 66
67#define SCIC_SDS_PORT_MIN_TIMER_COUNT (SCI_MAX_PORTS) 67#define SCIC_SDS_PORT_MIN_TIMER_COUNT (SCI_MAX_PORTS)
68#define SCIC_SDS_PORT_MAX_TIMER_COUNT (SCI_MAX_PORTS) 68#define SCIC_SDS_PORT_MAX_TIMER_COUNT (SCI_MAX_PORTS)
diff --git a/drivers/scsi/isci/core/scic_sds_request.c b/drivers/scsi/isci/core/scic_sds_request.c
deleted file mode 100644
index cd279601de01..000000000000
--- a/drivers/scsi/isci/core/scic_sds_request.c
+++ /dev/null
@@ -1,1523 +0,0 @@
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 * * Neither the name of Intel Corporation nor the names of its
40 * contributors may be used to endorse or promote products derived
41 * from this software without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 */
55
56#include <scsi/sas.h>
57#include "scic_io_request.h"
58#include "registers.h"
59#include "scic_sds_port.h"
60#include "remote_device.h"
61#include "scic_sds_request.h"
62#include "scic_sds_smp_request.h"
63#include "scic_sds_stp_request.h"
64#include "unsolicited_frame_control.h"
65#include "sci_util.h"
66#include "scu_completion_codes.h"
67#include "scu_task_context.h"
68#include "request.h"
69#include "task.h"
70
71/*
72 * ****************************************************************************
73 * * SCIC SDS IO REQUEST CONSTANTS
74 * **************************************************************************** */
75
76/**
77 *
78 *
79 * We have no timer requirements for IO requests right now
80 */
81#define SCIC_SDS_IO_REQUEST_MINIMUM_TIMER_COUNT (0)
82#define SCIC_SDS_IO_REQUEST_MAXIMUM_TIMER_COUNT (0)
83
84/**
85 * This method returns the sgl element pair for the specificed sgl_pair index.
86 * @sci_req: This parameter specifies the IO request for which to retrieve
87 * the Scatter-Gather List element pair.
88 * @sgl_pair_index: This parameter specifies the index into the SGL element
89 * pair to be retrieved.
90 *
91 * This method returns a pointer to an struct scu_sgl_element_pair.
92 */
93static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair(
94 struct scic_sds_request *sci_req,
95 u32 sgl_pair_index
96 ) {
97 struct scu_task_context *task_context;
98
99 task_context = (struct scu_task_context *)sci_req->task_context_buffer;
100
101 if (sgl_pair_index == 0) {
102 return &task_context->sgl_pair_ab;
103 } else if (sgl_pair_index == 1) {
104 return &task_context->sgl_pair_cd;
105 }
106
107 return &sci_req->sg_table[sgl_pair_index - 2];
108}
109
110/**
111 * This function will build the SGL list for an IO request.
112 * @sci_req: This parameter specifies the IO request for which to build
113 * the Scatter-Gather List.
114 *
115 */
116void scic_sds_request_build_sgl(struct scic_sds_request *sds_request)
117{
118 struct isci_request *isci_request = sci_req_to_ireq(sds_request);
119 struct isci_host *isci_host = isci_request->isci_host;
120 struct sas_task *task = isci_request_access_task(isci_request);
121 struct scatterlist *sg = NULL;
122 dma_addr_t dma_addr;
123 u32 sg_idx = 0;
124 struct scu_sgl_element_pair *scu_sg = NULL;
125 struct scu_sgl_element_pair *prev_sg = NULL;
126
127 if (task->num_scatter > 0) {
128 sg = task->scatter;
129
130 while (sg) {
131 scu_sg = scic_sds_request_get_sgl_element_pair(
132 sds_request,
133 sg_idx);
134
135 SCU_SGL_COPY(scu_sg->A, sg);
136
137 sg = sg_next(sg);
138
139 if (sg) {
140 SCU_SGL_COPY(scu_sg->B, sg);
141 sg = sg_next(sg);
142 } else
143 SCU_SGL_ZERO(scu_sg->B);
144
145 if (prev_sg) {
146 dma_addr =
147 scic_io_request_get_dma_addr(
148 sds_request,
149 scu_sg);
150
151 prev_sg->next_pair_upper =
152 upper_32_bits(dma_addr);
153 prev_sg->next_pair_lower =
154 lower_32_bits(dma_addr);
155 }
156
157 prev_sg = scu_sg;
158 sg_idx++;
159 }
160 } else { /* handle when no sg */
161 scu_sg = scic_sds_request_get_sgl_element_pair(sds_request,
162 sg_idx);
163
164 dma_addr = dma_map_single(&isci_host->pdev->dev,
165 task->scatter,
166 task->total_xfer_len,
167 task->data_dir);
168
169 isci_request->zero_scatter_daddr = dma_addr;
170
171 scu_sg->A.length = task->total_xfer_len;
172 scu_sg->A.address_upper = upper_32_bits(dma_addr);
173 scu_sg->A.address_lower = lower_32_bits(dma_addr);
174 }
175
176 if (scu_sg) {
177 scu_sg->next_pair_upper = 0;
178 scu_sg->next_pair_lower = 0;
179 }
180}
181
182static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req)
183{
184 if (sci_req->was_tag_assigned_by_user == false)
185 sci_req->task_context_buffer = &sci_req->tc;
186}
187
188static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req)
189{
190 struct ssp_cmd_iu *cmd_iu;
191 struct isci_request *ireq = sci_req_to_ireq(sci_req);
192 struct sas_task *task = isci_request_access_task(ireq);
193
194 cmd_iu = &sci_req->ssp.cmd;
195
196 memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8);
197 cmd_iu->add_cdb_len = 0;
198 cmd_iu->_r_a = 0;
199 cmd_iu->_r_b = 0;
200 cmd_iu->en_fburst = 0; /* unsupported */
201 cmd_iu->task_prio = task->ssp_task.task_prio;
202 cmd_iu->task_attr = task->ssp_task.task_attr;
203 cmd_iu->_r_c = 0;
204
205 sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb,
206 sizeof(task->ssp_task.cdb) / sizeof(u32));
207}
208
209static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req)
210{
211 struct ssp_task_iu *task_iu;
212 struct isci_request *ireq = sci_req_to_ireq(sci_req);
213 struct sas_task *task = isci_request_access_task(ireq);
214 struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
215
216 task_iu = &sci_req->ssp.tmf;
217
218 memset(task_iu, 0, sizeof(struct ssp_task_iu));
219
220 memcpy(task_iu->LUN, task->ssp_task.LUN, 8);
221
222 task_iu->task_func = isci_tmf->tmf_code;
223 task_iu->task_tag =
224 (ireq->ttype == tmf_task) ?
225 isci_tmf->io_tag :
226 SCI_CONTROLLER_INVALID_IO_TAG;
227}
228
229/**
230 * This method is will fill in the SCU Task Context for any type of SSP request.
231 * @sci_req:
232 * @task_context:
233 *
234 */
235static void scu_ssp_reqeust_construct_task_context(
236 struct scic_sds_request *sds_request,
237 struct scu_task_context *task_context)
238{
239 dma_addr_t dma_addr;
240 struct scic_sds_controller *controller;
241 struct scic_sds_remote_device *target_device;
242 struct scic_sds_port *target_port;
243
244 controller = scic_sds_request_get_controller(sds_request);
245 target_device = scic_sds_request_get_device(sds_request);
246 target_port = scic_sds_request_get_port(sds_request);
247
248 /* Fill in the TC with the its required data */
249 task_context->abort = 0;
250 task_context->priority = 0;
251 task_context->initiator_request = 1;
252 task_context->connection_rate = target_device->connection_rate;
253 task_context->protocol_engine_index =
254 scic_sds_controller_get_protocol_engine_group(controller);
255 task_context->logical_port_index =
256 scic_sds_port_get_index(target_port);
257 task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
258 task_context->valid = SCU_TASK_CONTEXT_VALID;
259 task_context->context_type = SCU_TASK_CONTEXT_TYPE;
260
261 task_context->remote_node_index =
262 scic_sds_remote_device_get_index(sds_request->target_device);
263 task_context->command_code = 0;
264
265 task_context->link_layer_control = 0;
266 task_context->do_not_dma_ssp_good_response = 1;
267 task_context->strict_ordering = 0;
268 task_context->control_frame = 0;
269 task_context->timeout_enable = 0;
270 task_context->block_guard_enable = 0;
271
272 task_context->address_modifier = 0;
273
274 /* task_context->type.ssp.tag = sci_req->io_tag; */
275 task_context->task_phase = 0x01;
276
277 if (sds_request->was_tag_assigned_by_user) {
278 /*
279 * Build the task context now since we have already read
280 * the data
281 */
282 sds_request->post_context =
283 (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
284 (scic_sds_controller_get_protocol_engine_group(
285 controller) <<
286 SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
287 (scic_sds_port_get_index(target_port) <<
288 SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
289 scic_sds_io_tag_get_index(sds_request->io_tag));
290 } else {
291 /*
292 * Build the task context now since we have already read
293 * the data
294 *
295 * I/O tag index is not assigned because we have to wait
296 * until we get a TCi
297 */
298 sds_request->post_context =
299 (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
300 (scic_sds_controller_get_protocol_engine_group(
301 owning_controller) <<
302 SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
303 (scic_sds_port_get_index(target_port) <<
304 SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
305 }
306
307 /*
308 * Copy the physical address for the command buffer to the
309 * SCU Task Context
310 */
311 dma_addr = scic_io_request_get_dma_addr(sds_request,
312 &sds_request->ssp.cmd);
313
314 task_context->command_iu_upper = upper_32_bits(dma_addr);
315 task_context->command_iu_lower = lower_32_bits(dma_addr);
316
317 /*
318 * Copy the physical address for the response buffer to the
319 * SCU Task Context
320 */
321 dma_addr = scic_io_request_get_dma_addr(sds_request,
322 &sds_request->ssp.rsp);
323
324 task_context->response_iu_upper = upper_32_bits(dma_addr);
325 task_context->response_iu_lower = lower_32_bits(dma_addr);
326}
327
328/**
329 * This method is will fill in the SCU Task Context for a SSP IO request.
330 * @sci_req:
331 *
332 */
333static void scu_ssp_io_request_construct_task_context(
334 struct scic_sds_request *sci_req,
335 enum dma_data_direction dir,
336 u32 len)
337{
338 struct scu_task_context *task_context;
339
340 task_context = scic_sds_request_get_task_context(sci_req);
341
342 scu_ssp_reqeust_construct_task_context(sci_req, task_context);
343
344 task_context->ssp_command_iu_length =
345 sizeof(struct ssp_cmd_iu) / sizeof(u32);
346 task_context->type.ssp.frame_type = SSP_COMMAND;
347
348 switch (dir) {
349 case DMA_FROM_DEVICE:
350 case DMA_NONE:
351 default:
352 task_context->task_type = SCU_TASK_TYPE_IOREAD;
353 break;
354 case DMA_TO_DEVICE:
355 task_context->task_type = SCU_TASK_TYPE_IOWRITE;
356 break;
357 }
358
359 task_context->transfer_length_bytes = len;
360
361 if (task_context->transfer_length_bytes > 0)
362 scic_sds_request_build_sgl(sci_req);
363}
364
365static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req)
366{
367 if (sci_req->was_tag_assigned_by_user == false)
368 sci_req->task_context_buffer = &sci_req->tc;
369}
370
371/**
372 * This method will fill in the SCU Task Context for a SSP Task request. The
373 * following important settings are utilized: -# priority ==
374 * SCU_TASK_PRIORITY_HIGH. This ensures that the task request is issued
375 * ahead of other task destined for the same Remote Node. -# task_type ==
376 * SCU_TASK_TYPE_IOREAD. This simply indicates that a normal request type
377 * (i.e. non-raw frame) is being utilized to perform task management. -#
378 * control_frame == 1. This ensures that the proper endianess is set so
379 * that the bytes are transmitted in the right order for a task frame.
380 * @sci_req: This parameter specifies the task request object being
381 * constructed.
382 *
383 */
384static void scu_ssp_task_request_construct_task_context(
385 struct scic_sds_request *sci_req)
386{
387 struct scu_task_context *task_context;
388
389 task_context = scic_sds_request_get_task_context(sci_req);
390
391 scu_ssp_reqeust_construct_task_context(sci_req, task_context);
392
393 task_context->control_frame = 1;
394 task_context->priority = SCU_TASK_PRIORITY_HIGH;
395 task_context->task_type = SCU_TASK_TYPE_RAW_FRAME;
396 task_context->transfer_length_bytes = 0;
397 task_context->type.ssp.frame_type = SSP_TASK;
398 task_context->ssp_command_iu_length =
399 sizeof(struct ssp_task_iu) / sizeof(u32);
400}
401
402
403/**
404 * This method constructs the SSP Command IU data for this ssp passthrough
405 * comand request object.
406 * @sci_req: This parameter specifies the request object for which the SSP
407 * command information unit is being built.
408 *
409 * enum sci_status, returns invalid parameter is cdb > 16
410 */
411
412
413/**
414 * This method constructs the SATA request object.
415 * @sci_req:
416 * @sat_protocol:
417 * @transfer_length:
418 * @data_direction:
419 * @copy_rx_frame:
420 *
421 * enum sci_status
422 */
423static enum sci_status
424scic_io_request_construct_sata(struct scic_sds_request *sci_req,
425 u32 len,
426 enum dma_data_direction dir,
427 bool copy)
428{
429 enum sci_status status = SCI_SUCCESS;
430 struct isci_request *ireq = sci_req_to_ireq(sci_req);
431 struct sas_task *task = isci_request_access_task(ireq);
432
433 /* check for management protocols */
434 if (ireq->ttype == tmf_task) {
435 struct isci_tmf *tmf = isci_request_access_tmf(ireq);
436
437 if (tmf->tmf_code == isci_tmf_sata_srst_high ||
438 tmf->tmf_code == isci_tmf_sata_srst_low)
439 return scic_sds_stp_soft_reset_request_construct(sci_req);
440 else {
441 dev_err(scic_to_dev(sci_req->owning_controller),
442 "%s: Request 0x%p received un-handled SAT "
443 "management protocol 0x%x.\n",
444 __func__, sci_req, tmf->tmf_code);
445
446 return SCI_FAILURE;
447 }
448 }
449
450 if (!sas_protocol_ata(task->task_proto)) {
451 dev_err(scic_to_dev(sci_req->owning_controller),
452 "%s: Non-ATA protocol in SATA path: 0x%x\n",
453 __func__,
454 task->task_proto);
455 return SCI_FAILURE;
456
457 }
458
459 /* non data */
460 if (task->data_dir == DMA_NONE)
461 return scic_sds_stp_non_data_request_construct(sci_req);
462
463 /* NCQ */
464 if (task->ata_task.use_ncq)
465 return scic_sds_stp_ncq_request_construct(sci_req, len, dir);
466
467 /* DMA */
468 if (task->ata_task.dma_xfer)
469 return scic_sds_stp_udma_request_construct(sci_req, len, dir);
470 else /* PIO */
471 return scic_sds_stp_pio_request_construct(sci_req, copy);
472
473 return status;
474}
475
476enum sci_status scic_io_request_construct_basic_ssp(
477 struct scic_sds_request *sci_req)
478{
479 struct isci_request *ireq = sci_req_to_ireq(sci_req);
480 struct sas_task *task = isci_request_access_task(ireq);
481
482 sci_req->protocol = SCIC_SSP_PROTOCOL;
483
484 scu_ssp_io_request_construct_task_context(sci_req,
485 task->data_dir,
486 task->total_xfer_len);
487
488 scic_sds_io_request_build_ssp_command_iu(sci_req);
489
490 sci_base_state_machine_change_state(
491 &sci_req->state_machine,
492 SCI_BASE_REQUEST_STATE_CONSTRUCTED);
493
494 return SCI_SUCCESS;
495}
496
497
498enum sci_status scic_task_request_construct_ssp(
499 struct scic_sds_request *sci_req)
500{
501 /* Construct the SSP Task SCU Task Context */
502 scu_ssp_task_request_construct_task_context(sci_req);
503
504 /* Fill in the SSP Task IU */
505 scic_sds_task_request_build_ssp_task_iu(sci_req);
506
507 sci_base_state_machine_change_state(&sci_req->state_machine,
508 SCI_BASE_REQUEST_STATE_CONSTRUCTED);
509
510 return SCI_SUCCESS;
511}
512
513
514enum sci_status scic_io_request_construct_basic_sata(
515 struct scic_sds_request *sci_req)
516{
517 enum sci_status status;
518 struct scic_sds_stp_request *stp_req;
519 bool copy = false;
520 struct isci_request *isci_request = sci_req_to_ireq(sci_req);
521 struct sas_task *task = isci_request_access_task(isci_request);
522
523 stp_req = &sci_req->stp.req;
524 sci_req->protocol = SCIC_STP_PROTOCOL;
525
526 copy = (task->data_dir == DMA_NONE) ? false : true;
527
528 status = scic_io_request_construct_sata(sci_req,
529 task->total_xfer_len,
530 task->data_dir,
531 copy);
532
533 if (status == SCI_SUCCESS)
534 sci_base_state_machine_change_state(&sci_req->state_machine,
535 SCI_BASE_REQUEST_STATE_CONSTRUCTED);
536
537 return status;
538}
539
540
541enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req)
542{
543 enum sci_status status = SCI_SUCCESS;
544 struct isci_request *ireq = sci_req_to_ireq(sci_req);
545
546 /* check for management protocols */
547 if (ireq->ttype == tmf_task) {
548 struct isci_tmf *tmf = isci_request_access_tmf(ireq);
549
550 if (tmf->tmf_code == isci_tmf_sata_srst_high ||
551 tmf->tmf_code == isci_tmf_sata_srst_low) {
552 status = scic_sds_stp_soft_reset_request_construct(sci_req);
553 } else {
554 dev_err(scic_to_dev(sci_req->owning_controller),
555 "%s: Request 0x%p received un-handled SAT "
556 "Protocol 0x%x.\n",
557 __func__, sci_req, tmf->tmf_code);
558
559 return SCI_FAILURE;
560 }
561 }
562
563 if (status == SCI_SUCCESS)
564 sci_base_state_machine_change_state(
565 &sci_req->state_machine,
566 SCI_BASE_REQUEST_STATE_CONSTRUCTED);
567
568 return status;
569}
570
571
572u16 scic_io_request_get_io_tag(
573 struct scic_sds_request *sci_req)
574{
575 return sci_req->io_tag;
576}
577
578
579u32 scic_request_get_controller_status(
580 struct scic_sds_request *sci_req)
581{
582 return sci_req->scu_status;
583}
584
585#define SCU_TASK_CONTEXT_SRAM 0x200000
586u32 scic_io_request_get_number_of_bytes_transferred(
587 struct scic_sds_request *scic_sds_request)
588{
589 struct scic_sds_controller *scic = scic_sds_request->owning_controller;
590 u32 ret_val = 0;
591
592 if (readl(&scic->smu_registers->address_modifier) == 0) {
593 void __iomem *scu_reg_base = scic->scu_registers;
594 /*
595 * get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where
596 * BAR1 is the scu_registers
597 * 0x20002C = 0x200000 + 0x2c
598 * = start of task context SRAM + offset of (type.ssp.data_offset)
599 * TCi is the io_tag of struct scic_sds_request */
600 ret_val = readl(scu_reg_base +
601 (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) +
602 ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(scic_sds_request->io_tag)));
603 }
604
605 return ret_val;
606}
607
608
609/*
610 * ****************************************************************************
611 * * SCIC SDS Interface Implementation
612 * **************************************************************************** */
613
614enum sci_status
615scic_sds_request_start(struct scic_sds_request *request)
616{
617 if (request->device_sequence !=
618 scic_sds_remote_device_get_sequence(request->target_device))
619 return SCI_FAILURE;
620
621 if (request->state_handlers->start_handler)
622 return request->state_handlers->start_handler(request);
623
624 dev_warn(scic_to_dev(request->owning_controller),
625 "%s: SCIC IO Request requested to start while in wrong "
626 "state %d\n",
627 __func__,
628 sci_base_state_machine_get_state(&request->state_machine));
629
630 return SCI_FAILURE_INVALID_STATE;
631}
632
633enum sci_status
634scic_sds_io_request_terminate(struct scic_sds_request *request)
635{
636 if (request->state_handlers->abort_handler)
637 return request->state_handlers->abort_handler(request);
638
639 dev_warn(scic_to_dev(request->owning_controller),
640 "%s: SCIC IO Request requested to abort while in wrong "
641 "state %d\n",
642 __func__,
643 sci_base_state_machine_get_state(&request->state_machine));
644
645 return SCI_FAILURE_INVALID_STATE;
646}
647
648enum sci_status
649scic_sds_io_request_complete(struct scic_sds_request *request)
650{
651 if (request->state_handlers->complete_handler)
652 return request->state_handlers->complete_handler(request);
653
654 dev_warn(scic_to_dev(request->owning_controller),
655 "%s: SCIC IO Request requested to complete while in wrong "
656 "state %d\n",
657 __func__,
658 sci_base_state_machine_get_state(&request->state_machine));
659
660 return SCI_FAILURE_INVALID_STATE;
661}
662
663enum sci_status scic_sds_io_request_event_handler(
664 struct scic_sds_request *request,
665 u32 event_code)
666{
667 if (request->state_handlers->event_handler)
668 return request->state_handlers->event_handler(request, event_code);
669
670 dev_warn(scic_to_dev(request->owning_controller),
671 "%s: SCIC IO Request given event code notification %x while "
672 "in wrong state %d\n",
673 __func__,
674 event_code,
675 sci_base_state_machine_get_state(&request->state_machine));
676
677 return SCI_FAILURE_INVALID_STATE;
678}
679
680enum sci_status
681scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code)
682{
683 if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED &&
684 request->has_started_substate_machine == false)
685 return scic_sds_request_started_state_tc_completion_handler(request, completion_code);
686 else if (request->state_handlers->tc_completion_handler)
687 return request->state_handlers->tc_completion_handler(request, completion_code);
688
689 dev_warn(scic_to_dev(request->owning_controller),
690 "%s: SCIC IO Request given task completion notification %x "
691 "while in wrong state %d\n",
692 __func__,
693 completion_code,
694 sci_base_state_machine_get_state(&request->state_machine));
695
696 return SCI_FAILURE_INVALID_STATE;
697
698}
699
700
701/**
702 *
703 * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start
704 * operation is to be executed.
705 * @frame_index: The frame index returned by the hardware for the reqeust
706 * object.
707 *
708 * This method invokes the core state frame handler for the
709 * SCIC_SDS_IO_REQUEST_T object. enum sci_status
710 */
711enum sci_status scic_sds_io_request_frame_handler(
712 struct scic_sds_request *request,
713 u32 frame_index)
714{
715 if (request->state_handlers->frame_handler)
716 return request->state_handlers->frame_handler(request, frame_index);
717
718 dev_warn(scic_to_dev(request->owning_controller),
719 "%s: SCIC IO Request given unexpected frame %x while in "
720 "state %d\n",
721 __func__,
722 frame_index,
723 sci_base_state_machine_get_state(&request->state_machine));
724
725 scic_sds_controller_release_frame(request->owning_controller, frame_index);
726 return SCI_FAILURE_INVALID_STATE;
727}
728
729/*
730 * This function copies response data for requests returning response data
731 * instead of sense data.
732 * @sci_req: This parameter specifies the request object for which to copy
733 * the response data.
734 */
735void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req)
736{
737 void *resp_buf;
738 u32 len;
739 struct ssp_response_iu *ssp_response;
740 struct isci_request *ireq = sci_req_to_ireq(sci_req);
741 struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
742
743 ssp_response = &sci_req->ssp.rsp;
744
745 resp_buf = &isci_tmf->resp.resp_iu;
746
747 len = min_t(u32,
748 SSP_RESP_IU_MAX_SIZE,
749 be32_to_cpu(ssp_response->response_data_len));
750
751 memcpy(resp_buf, ssp_response->resp_data, len);
752}
753
754/*
755 * *****************************************************************************
756 * * CONSTRUCTED STATE HANDLERS
757 * ***************************************************************************** */
758
759/*
760 * This method implements the action taken when a constructed
761 * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request.
762 * This method will, if necessary, allocate a TCi for the io request object and
763 * then will, if necessary, copy the constructed TC data into the actual TC
764 * buffer. If everything is successful the post context field is updated with
765 * the TCi so the controller can post the request to the hardware. enum sci_status
766 * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES
767 */
768static enum sci_status scic_sds_request_constructed_state_start_handler(
769 struct scic_sds_request *request)
770{
771 struct scu_task_context *task_context;
772
773 if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
774 request->io_tag =
775 scic_controller_allocate_io_tag(request->owning_controller);
776 }
777
778 /* Record the IO Tag in the request */
779 if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) {
780 task_context = request->task_context_buffer;
781
782 task_context->task_index = scic_sds_io_tag_get_index(request->io_tag);
783
784 switch (task_context->protocol_type) {
785 case SCU_TASK_CONTEXT_PROTOCOL_SMP:
786 case SCU_TASK_CONTEXT_PROTOCOL_SSP:
787 /* SSP/SMP Frame */
788 task_context->type.ssp.tag = request->io_tag;
789 task_context->type.ssp.target_port_transfer_tag = 0xFFFF;
790 break;
791
792 case SCU_TASK_CONTEXT_PROTOCOL_STP:
793 /*
794 * STP/SATA Frame
795 * task_context->type.stp.ncq_tag = request->ncq_tag; */
796 break;
797
798 case SCU_TASK_CONTEXT_PROTOCOL_NONE:
799 /* / @todo When do we set no protocol type? */
800 break;
801
802 default:
803 /* This should never happen since we build the IO requests */
804 break;
805 }
806
807 /*
808 * Check to see if we need to copy the task context buffer
809 * or have been building into the task context buffer */
810 if (request->was_tag_assigned_by_user == false) {
811 scic_sds_controller_copy_task_context(
812 request->owning_controller, request);
813 }
814
815 /* Add to the post_context the io tag value */
816 request->post_context |= scic_sds_io_tag_get_index(request->io_tag);
817
818 /* Everything is good go ahead and change state */
819 sci_base_state_machine_change_state(&request->state_machine,
820 SCI_BASE_REQUEST_STATE_STARTED);
821
822 return SCI_SUCCESS;
823 }
824
825 return SCI_FAILURE_INSUFFICIENT_RESOURCES;
826}
827
828/*
829 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
830 * object receives a scic_sds_request_terminate() request. Since the request
831 * has not yet been posted to the hardware the request transitions to the
832 * completed state. enum sci_status SCI_SUCCESS
833 */
834static enum sci_status scic_sds_request_constructed_state_abort_handler(
835 struct scic_sds_request *request)
836{
837 /*
838 * This request has been terminated by the user make sure that the correct
839 * status code is returned */
840 scic_sds_request_set_status(request,
841 SCU_TASK_DONE_TASK_ABORT,
842 SCI_FAILURE_IO_TERMINATED);
843
844 sci_base_state_machine_change_state(&request->state_machine,
845 SCI_BASE_REQUEST_STATE_COMPLETED);
846 return SCI_SUCCESS;
847}
848
849/*
850 * *****************************************************************************
851 * * STARTED STATE HANDLERS
852 * ***************************************************************************** */
853
854/*
855 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
856 * object receives a scic_sds_request_terminate() request. Since the request
857 * has been posted to the hardware the io request state is changed to the
858 * aborting state. enum sci_status SCI_SUCCESS
859 */
860enum sci_status scic_sds_request_started_state_abort_handler(
861 struct scic_sds_request *request)
862{
863 if (request->has_started_substate_machine)
864 sci_base_state_machine_stop(&request->started_substate_machine);
865
866 sci_base_state_machine_change_state(&request->state_machine,
867 SCI_BASE_REQUEST_STATE_ABORTING);
868 return SCI_SUCCESS;
869}
870
871/*
872 * scic_sds_request_started_state_tc_completion_handler() - This method process
873 * TC (task context) completions for normal IO request (i.e. Task/Abort
874 * Completions of type 0). This method will update the
875 * SCIC_SDS_IO_REQUEST_T::status field.
876 * @sci_req: This parameter specifies the request for which a completion
877 * occurred.
878 * @completion_code: This parameter specifies the completion code received from
879 * the SCU.
880 *
881 */
882enum sci_status
883scic_sds_request_started_state_tc_completion_handler(
884 struct scic_sds_request *sci_req,
885 u32 completion_code)
886{
887 u8 datapres;
888 struct ssp_response_iu *resp_iu;
889
890 /*
891 * TODO: Any SDMA return code of other than 0 is bad
892 * decode 0x003C0000 to determine SDMA status
893 */
894 switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
895 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
896 scic_sds_request_set_status(sci_req,
897 SCU_TASK_DONE_GOOD,
898 SCI_SUCCESS);
899 break;
900
901 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP):
902 {
903 /*
904 * There are times when the SCU hardware will return an early
905 * response because the io request specified more data than is
906 * returned by the target device (mode pages, inquiry data,
907 * etc.). We must check the response stats to see if this is
908 * truly a failed request or a good request that just got
909 * completed early.
910 */
911 struct ssp_response_iu *resp = &sci_req->ssp.rsp;
912 ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
913
914 sci_swab32_cpy(&sci_req->ssp.rsp,
915 &sci_req->ssp.rsp,
916 word_cnt);
917
918 if (resp->status == 0) {
919 scic_sds_request_set_status(
920 sci_req,
921 SCU_TASK_DONE_GOOD,
922 SCI_SUCCESS_IO_DONE_EARLY);
923 } else {
924 scic_sds_request_set_status(
925 sci_req,
926 SCU_TASK_DONE_CHECK_RESPONSE,
927 SCI_FAILURE_IO_RESPONSE_VALID);
928 }
929 }
930 break;
931
932 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE):
933 {
934 ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
935
936 sci_swab32_cpy(&sci_req->ssp.rsp,
937 &sci_req->ssp.rsp,
938 word_cnt);
939
940 scic_sds_request_set_status(sci_req,
941 SCU_TASK_DONE_CHECK_RESPONSE,
942 SCI_FAILURE_IO_RESPONSE_VALID);
943 break;
944 }
945
946 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR):
947 /*
948 * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame
949 * guaranteed to be received before this completion status is
950 * posted?
951 */
952 resp_iu = &sci_req->ssp.rsp;
953 datapres = resp_iu->datapres;
954
955 if ((datapres == 0x01) || (datapres == 0x02)) {
956 scic_sds_request_set_status(
957 sci_req,
958 SCU_TASK_DONE_CHECK_RESPONSE,
959 SCI_FAILURE_IO_RESPONSE_VALID);
960 } else
961 scic_sds_request_set_status(
962 sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
963 break;
964
965 /* only stp device gets suspended. */
966 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
967 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR):
968 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR):
969 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR):
970 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR):
971 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN):
972 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
973 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP):
974 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS):
975 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
976 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR):
977 if (sci_req->protocol == SCIC_STP_PROTOCOL) {
978 scic_sds_request_set_status(
979 sci_req,
980 SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
981 SCU_COMPLETION_TL_STATUS_SHIFT,
982 SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
983 } else {
984 scic_sds_request_set_status(
985 sci_req,
986 SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
987 SCU_COMPLETION_TL_STATUS_SHIFT,
988 SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
989 }
990 break;
991
992 /* both stp/ssp device gets suspended */
993 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR):
994 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION):
995 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1):
996 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2):
997 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3):
998 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION):
999 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION):
1000 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY):
1001 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED):
1002 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED):
1003 scic_sds_request_set_status(
1004 sci_req,
1005 SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
1006 SCU_COMPLETION_TL_STATUS_SHIFT,
1007 SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
1008 break;
1009
1010 /* neither ssp nor stp gets suspended. */
1011 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR):
1012 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR):
1013 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR):
1014 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR):
1015 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR):
1016 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA):
1017 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
1018 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
1019 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
1020 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
1021 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA):
1022 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL):
1023 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV):
1024 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV):
1025 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND):
1026 default:
1027 scic_sds_request_set_status(
1028 sci_req,
1029 SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
1030 SCU_COMPLETION_TL_STATUS_SHIFT,
1031 SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
1032 break;
1033 }
1034
1035 /*
1036 * TODO: This is probably wrong for ACK/NAK timeout conditions
1037 */
1038
1039 /* In all cases we will treat this as the completion of the IO req. */
1040 sci_base_state_machine_change_state(
1041 &sci_req->state_machine,
1042 SCI_BASE_REQUEST_STATE_COMPLETED);
1043 return SCI_SUCCESS;
1044}
1045
1046/*
1047 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
1048 * object receives a scic_sds_request_frame_handler() request. This method
1049 * first determines the frame type received. If this is a response frame then
1050 * the response data is copied to the io request response buffer for processing
1051 * at completion time. If the frame type is not a response buffer an error is
1052 * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE
1053 */
1054static enum sci_status
1055scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req,
1056 u32 frame_index)
1057{
1058 enum sci_status status;
1059 u32 *frame_header;
1060 struct ssp_frame_hdr ssp_hdr;
1061 ssize_t word_cnt;
1062
1063 status = scic_sds_unsolicited_frame_control_get_header(
1064 &(scic_sds_request_get_controller(sci_req)->uf_control),
1065 frame_index,
1066 (void **)&frame_header);
1067
1068 word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
1069 sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
1070
1071 if (ssp_hdr.frame_type == SSP_RESPONSE) {
1072 struct ssp_response_iu *resp_iu;
1073 ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
1074
1075 status = scic_sds_unsolicited_frame_control_get_buffer(
1076 &(scic_sds_request_get_controller(sci_req)->uf_control),
1077 frame_index,
1078 (void **)&resp_iu);
1079
1080 sci_swab32_cpy(&sci_req->ssp.rsp,
1081 resp_iu, word_cnt);
1082
1083 resp_iu = &sci_req->ssp.rsp;
1084
1085 if ((resp_iu->datapres == 0x01) ||
1086 (resp_iu->datapres == 0x02)) {
1087 scic_sds_request_set_status(
1088 sci_req,
1089 SCU_TASK_DONE_CHECK_RESPONSE,
1090 SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
1091 } else
1092 scic_sds_request_set_status(
1093 sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
1094 } else {
1095 /* This was not a response frame why did it get forwarded? */
1096 dev_err(scic_to_dev(sci_req->owning_controller),
1097 "%s: SCIC IO Request 0x%p received unexpected "
1098 "frame %d type 0x%02x\n",
1099 __func__,
1100 sci_req,
1101 frame_index,
1102 ssp_hdr.frame_type);
1103 }
1104
1105 /*
1106 * In any case we are done with this frame buffer return it to the
1107 * controller
1108 */
1109 scic_sds_controller_release_frame(
1110 sci_req->owning_controller, frame_index);
1111
1112 return SCI_SUCCESS;
1113}
1114
1115/*
1116 * *****************************************************************************
1117 * * COMPLETED STATE HANDLERS
1118 * ***************************************************************************** */
1119
1120
1121/*
1122 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
1123 * object receives a scic_sds_request_complete() request. This method frees up
1124 * any io request resources that have been allocated and transitions the
1125 * request to its final state. Consider stopping the state machine instead of
1126 * transitioning to the final state? enum sci_status SCI_SUCCESS
1127 */
1128static enum sci_status scic_sds_request_completed_state_complete_handler(
1129 struct scic_sds_request *request)
1130{
1131 if (request->was_tag_assigned_by_user != true) {
1132 scic_controller_free_io_tag(
1133 request->owning_controller, request->io_tag);
1134 }
1135
1136 if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) {
1137 scic_sds_controller_release_frame(
1138 request->owning_controller, request->saved_rx_frame_index);
1139 }
1140
1141 sci_base_state_machine_change_state(&request->state_machine,
1142 SCI_BASE_REQUEST_STATE_FINAL);
1143 return SCI_SUCCESS;
1144}
1145
1146/*
1147 * *****************************************************************************
1148 * * ABORTING STATE HANDLERS
1149 * ***************************************************************************** */
1150
1151/*
1152 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
1153 * object receives a scic_sds_request_terminate() request. This method is the
1154 * io request aborting state abort handlers. On receipt of a multiple
1155 * terminate requests the io request will transition to the completed state.
1156 * This should not happen in normal operation. enum sci_status SCI_SUCCESS
1157 */
1158static enum sci_status scic_sds_request_aborting_state_abort_handler(
1159 struct scic_sds_request *request)
1160{
1161 sci_base_state_machine_change_state(&request->state_machine,
1162 SCI_BASE_REQUEST_STATE_COMPLETED);
1163 return SCI_SUCCESS;
1164}
1165
1166/*
1167 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
1168 * object receives a scic_sds_request_task_completion() request. This method
1169 * decodes the completion type waiting for the abort task complete
1170 * notification. When the abort task complete is received the io request
1171 * transitions to the completed state. enum sci_status SCI_SUCCESS
1172 */
1173static enum sci_status scic_sds_request_aborting_state_tc_completion_handler(
1174 struct scic_sds_request *sci_req,
1175 u32 completion_code)
1176{
1177 switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
1178 case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT):
1179 case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT):
1180 scic_sds_request_set_status(
1181 sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED
1182 );
1183
1184 sci_base_state_machine_change_state(&sci_req->state_machine,
1185 SCI_BASE_REQUEST_STATE_COMPLETED);
1186 break;
1187
1188 default:
1189 /*
1190 * Unless we get some strange error wait for the task abort to complete
1191 * TODO: Should there be a state change for this completion? */
1192 break;
1193 }
1194
1195 return SCI_SUCCESS;
1196}
1197
1198/*
1199 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
1200 * object receives a scic_sds_request_frame_handler() request. This method
1201 * discards the unsolicited frame since we are waiting for the abort task
1202 * completion. enum sci_status SCI_SUCCESS
1203 */
1204static enum sci_status scic_sds_request_aborting_state_frame_handler(
1205 struct scic_sds_request *sci_req,
1206 u32 frame_index)
1207{
1208 /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */
1209
1210 scic_sds_controller_release_frame(
1211 sci_req->owning_controller, frame_index);
1212
1213 return SCI_SUCCESS;
1214}
1215
1216static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = {
1217 [SCI_BASE_REQUEST_STATE_INITIAL] = {
1218 },
1219 [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
1220 .start_handler = scic_sds_request_constructed_state_start_handler,
1221 .abort_handler = scic_sds_request_constructed_state_abort_handler,
1222 },
1223 [SCI_BASE_REQUEST_STATE_STARTED] = {
1224 .abort_handler = scic_sds_request_started_state_abort_handler,
1225 .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler,
1226 .frame_handler = scic_sds_request_started_state_frame_handler,
1227 },
1228 [SCI_BASE_REQUEST_STATE_COMPLETED] = {
1229 .complete_handler = scic_sds_request_completed_state_complete_handler,
1230 },
1231 [SCI_BASE_REQUEST_STATE_ABORTING] = {
1232 .abort_handler = scic_sds_request_aborting_state_abort_handler,
1233 .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler,
1234 .frame_handler = scic_sds_request_aborting_state_frame_handler,
1235 },
1236 [SCI_BASE_REQUEST_STATE_FINAL] = {
1237 },
1238};
1239
1240/**
1241 * scic_sds_request_initial_state_enter() -
1242 * @object: This parameter specifies the base object for which the state
1243 * transition is occurring.
1244 *
1245 * This method implements the actions taken when entering the
1246 * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial
1247 * base request is constructed. Entry into the initial state sets all handlers
1248 * for the io request object to their default handlers. none
1249 */
1250static void scic_sds_request_initial_state_enter(void *object)
1251{
1252 struct scic_sds_request *sci_req = object;
1253
1254 SET_STATE_HANDLER(
1255 sci_req,
1256 scic_sds_request_state_handler_table,
1257 SCI_BASE_REQUEST_STATE_INITIAL
1258 );
1259}
1260
1261/**
1262 * scic_sds_request_constructed_state_enter() -
1263 * @object: The io request object that is to enter the constructed state.
1264 *
1265 * This method implements the actions taken when entering the
1266 * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers
1267 * for the the constructed state. none
1268 */
1269static void scic_sds_request_constructed_state_enter(void *object)
1270{
1271 struct scic_sds_request *sci_req = object;
1272
1273 SET_STATE_HANDLER(
1274 sci_req,
1275 scic_sds_request_state_handler_table,
1276 SCI_BASE_REQUEST_STATE_CONSTRUCTED
1277 );
1278}
1279
1280/**
1281 * scic_sds_request_started_state_enter() -
1282 * @object: This parameter specifies the base object for which the state
1283 * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
1284 *
1285 * This method implements the actions taken when entering the
1286 * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a
1287 * SCSI Task request we must enter the started substate machine. none
1288 */
1289static void scic_sds_request_started_state_enter(void *object)
1290{
1291 struct scic_sds_request *sci_req = object;
1292
1293 SET_STATE_HANDLER(
1294 sci_req,
1295 scic_sds_request_state_handler_table,
1296 SCI_BASE_REQUEST_STATE_STARTED
1297 );
1298
1299 /*
1300 * Most of the request state machines have a started substate machine so
1301 * start its execution on the entry to the started state. */
1302 if (sci_req->has_started_substate_machine == true)
1303 sci_base_state_machine_start(&sci_req->started_substate_machine);
1304}
1305
1306/**
1307 * scic_sds_request_started_state_exit() -
1308 * @object: This parameter specifies the base object for which the state
1309 * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
1310 * object.
1311 *
1312 * This method implements the actions taken when exiting the
1313 * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be
1314 * to stop the started substate machine. none
1315 */
1316static void scic_sds_request_started_state_exit(void *object)
1317{
1318 struct scic_sds_request *sci_req = object;
1319
1320 if (sci_req->has_started_substate_machine == true)
1321 sci_base_state_machine_stop(&sci_req->started_substate_machine);
1322}
1323
1324/**
1325 * scic_sds_request_completed_state_enter() -
1326 * @object: This parameter specifies the base object for which the state
1327 * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
1328 * object.
1329 *
1330 * This method implements the actions taken when entering the
1331 * SCI_BASE_REQUEST_STATE_COMPLETED state. This state is entered when the
1332 * SCIC_SDS_IO_REQUEST has completed. The method will decode the request
1333 * completion status and convert it to an enum sci_status to return in the
1334 * completion callback function. none
1335 */
1336static void scic_sds_request_completed_state_enter(void *object)
1337{
1338 struct scic_sds_request *sci_req = object;
1339 struct scic_sds_controller *scic =
1340 scic_sds_request_get_controller(sci_req);
1341 struct isci_host *ihost = scic_to_ihost(scic);
1342 struct isci_request *ireq = sci_req_to_ireq(sci_req);
1343
1344 SET_STATE_HANDLER(sci_req,
1345 scic_sds_request_state_handler_table,
1346 SCI_BASE_REQUEST_STATE_COMPLETED);
1347
1348 /* Tell the SCI_USER that the IO request is complete */
1349 if (sci_req->is_task_management_request == false)
1350 isci_request_io_request_complete(ihost,
1351 ireq,
1352 sci_req->sci_status);
1353 else
1354 isci_task_request_complete(ihost, ireq, sci_req->sci_status);
1355}
1356
1357/**
1358 * scic_sds_request_aborting_state_enter() -
1359 * @object: This parameter specifies the base object for which the state
1360 * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
1361 * object.
1362 *
1363 * This method implements the actions taken when entering the
1364 * SCI_BASE_REQUEST_STATE_ABORTING state. none
1365 */
1366static void scic_sds_request_aborting_state_enter(void *object)
1367{
1368 struct scic_sds_request *sci_req = object;
1369
1370 /* Setting the abort bit in the Task Context is required by the silicon. */
1371 sci_req->task_context_buffer->abort = 1;
1372
1373 SET_STATE_HANDLER(
1374 sci_req,
1375 scic_sds_request_state_handler_table,
1376 SCI_BASE_REQUEST_STATE_ABORTING
1377 );
1378}
1379
1380/**
1381 * scic_sds_request_final_state_enter() -
1382 * @object: This parameter specifies the base object for which the state
1383 * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
1384 *
1385 * This method implements the actions taken when entering the
1386 * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the
1387 * state handlers in place. none
1388 */
1389static void scic_sds_request_final_state_enter(void *object)
1390{
1391 struct scic_sds_request *sci_req = object;
1392
1393 SET_STATE_HANDLER(
1394 sci_req,
1395 scic_sds_request_state_handler_table,
1396 SCI_BASE_REQUEST_STATE_FINAL
1397 );
1398}
1399
1400static const struct sci_base_state scic_sds_request_state_table[] = {
1401 [SCI_BASE_REQUEST_STATE_INITIAL] = {
1402 .enter_state = scic_sds_request_initial_state_enter,
1403 },
1404 [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
1405 .enter_state = scic_sds_request_constructed_state_enter,
1406 },
1407 [SCI_BASE_REQUEST_STATE_STARTED] = {
1408 .enter_state = scic_sds_request_started_state_enter,
1409 .exit_state = scic_sds_request_started_state_exit
1410 },
1411 [SCI_BASE_REQUEST_STATE_COMPLETED] = {
1412 .enter_state = scic_sds_request_completed_state_enter,
1413 },
1414 [SCI_BASE_REQUEST_STATE_ABORTING] = {
1415 .enter_state = scic_sds_request_aborting_state_enter,
1416 },
1417 [SCI_BASE_REQUEST_STATE_FINAL] = {
1418 .enter_state = scic_sds_request_final_state_enter,
1419 },
1420};
1421
1422static void scic_sds_general_request_construct(struct scic_sds_controller *scic,
1423 struct scic_sds_remote_device *sci_dev,
1424 u16 io_tag, struct scic_sds_request *sci_req)
1425{
1426 sci_base_state_machine_construct(&sci_req->state_machine, sci_req,
1427 scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL);
1428 sci_base_state_machine_start(&sci_req->state_machine);
1429
1430 sci_req->io_tag = io_tag;
1431 sci_req->owning_controller = scic;
1432 sci_req->target_device = sci_dev;
1433 sci_req->has_started_substate_machine = false;
1434 sci_req->protocol = SCIC_NO_PROTOCOL;
1435 sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX;
1436 sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev);
1437
1438 sci_req->sci_status = SCI_SUCCESS;
1439 sci_req->scu_status = 0;
1440 sci_req->post_context = 0xFFFFFFFF;
1441
1442 sci_req->is_task_management_request = false;
1443
1444 if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
1445 sci_req->was_tag_assigned_by_user = false;
1446 sci_req->task_context_buffer = NULL;
1447 } else {
1448 sci_req->was_tag_assigned_by_user = true;
1449
1450 sci_req->task_context_buffer =
1451 scic_sds_controller_get_task_context_buffer(scic, io_tag);
1452 }
1453}
1454
1455enum sci_status
1456scic_io_request_construct(struct scic_sds_controller *scic,
1457 struct scic_sds_remote_device *sci_dev,
1458 u16 io_tag, struct scic_sds_request *sci_req)
1459{
1460 struct domain_device *dev = sci_dev_to_domain(sci_dev);
1461 enum sci_status status = SCI_SUCCESS;
1462
1463 /* Build the common part of the request */
1464 scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
1465
1466 if (sci_dev->rnc.remote_node_index ==
1467 SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
1468 return SCI_FAILURE_INVALID_REMOTE_DEVICE;
1469
1470 if (dev->dev_type == SAS_END_DEV)
1471 scic_sds_ssp_io_request_assign_buffers(sci_req);
1472 else if ((dev->dev_type == SATA_DEV) ||
1473 (dev->tproto & SAS_PROTOCOL_STP)) {
1474 scic_sds_stp_request_assign_buffers(sci_req);
1475 memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd));
1476 } else if (dev_is_expander(dev)) {
1477 scic_sds_smp_request_assign_buffers(sci_req);
1478 memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd));
1479 } else
1480 status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
1481
1482 if (status == SCI_SUCCESS) {
1483 memset(sci_req->task_context_buffer, 0,
1484 offsetof(struct scu_task_context, sgl_pair_ab));
1485 }
1486
1487 return status;
1488}
1489
1490enum sci_status scic_task_request_construct(struct scic_sds_controller *scic,
1491 struct scic_sds_remote_device *sci_dev,
1492 u16 io_tag, struct scic_sds_request *sci_req)
1493{
1494 struct domain_device *dev = sci_dev_to_domain(sci_dev);
1495 enum sci_status status = SCI_SUCCESS;
1496
1497 /* Build the common part of the request */
1498 scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
1499
1500 if (dev->dev_type == SAS_END_DEV) {
1501 scic_sds_ssp_task_request_assign_buffers(sci_req);
1502
1503 sci_req->has_started_substate_machine = true;
1504
1505 /* Construct the started sub-state machine. */
1506 sci_base_state_machine_construct(
1507 &sci_req->started_substate_machine,
1508 sci_req,
1509 scic_sds_io_request_started_task_mgmt_substate_table,
1510 SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
1511 );
1512 } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))
1513 scic_sds_stp_request_assign_buffers(sci_req);
1514 else
1515 status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
1516
1517 if (status == SCI_SUCCESS) {
1518 sci_req->is_task_management_request = true;
1519 memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context));
1520 }
1521
1522 return status;
1523}
diff --git a/drivers/scsi/isci/core/scic_sds_request.h b/drivers/scsi/isci/core/scic_sds_request.h
deleted file mode 100644
index a8d74a15a86b..000000000000
--- a/drivers/scsi/isci/core/scic_sds_request.h
+++ /dev/null
@@ -1,491 +0,0 @@
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 * * Neither the name of Intel Corporation nor the names of its
40 * contributors may be used to endorse or promote products derived
41 * from this software without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 */
55
56#ifndef _SCIC_SDS_IO_REQUEST_H_
57#define _SCIC_SDS_IO_REQUEST_H_
58
59#include "isci.h"
60#include "scic_io_request.h"
61#include "state_machine.h"
62#include "scu_task_context.h"
63#include "scic_sds_stp_request.h"
64#include "sas.h"
65
66struct scic_sds_controller;
67struct scic_sds_remote_device;
68struct scic_sds_io_request_state_handler;
69
70/**
71 * enum _scic_sds_io_request_started_task_mgmt_substates - This enumeration
72 * depicts all of the substates for a task management request to be
73 * performed in the STARTED super-state.
74 *
75 *
76 */
77enum scic_sds_raw_request_started_task_mgmt_substates {
78 /**
79 * The AWAIT_TC_COMPLETION sub-state indicates that the started raw
80 * task management request is waiting for the transmission of the
81 * initial frame (i.e. command, task, etc.).
82 */
83 SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION,
84
85 /**
86 * This sub-state indicates that the started task management request
87 * is waiting for the reception of an unsolicited frame
88 * (i.e. response IU).
89 */
90 SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE,
91};
92
93
94/**
95 * enum _scic_sds_smp_request_started_substates - This enumeration depicts all
96 * of the substates for a SMP request to be performed in the STARTED
97 * super-state.
98 *
99 *
100 */
101enum scic_sds_smp_request_started_substates {
102 /**
103 * This sub-state indicates that the started task management request
104 * is waiting for the reception of an unsolicited frame
105 * (i.e. response IU).
106 */
107 SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE,
108
109 /**
110 * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is
111 * waiting for the transmission of the initial frame (i.e. command, task, etc.).
112 */
113 SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION,
114};
115
116struct scic_sds_request {
117 /**
118 * This field contains the information for the base request state machine.
119 */
120 struct sci_base_state_machine state_machine;
121
122 /**
123 * This field simply points to the controller to which this IO request
124 * is associated.
125 */
126 struct scic_sds_controller *owning_controller;
127
128 /**
129 * This field simply points to the remote device to which this IO request
130 * is associated.
131 */
132 struct scic_sds_remote_device *target_device;
133
134 /**
135 * This field is utilized to determine if the SCI user is managing
136 * the IO tag for this request or if the core is managing it.
137 */
138 bool was_tag_assigned_by_user;
139
140 /**
141 * This field indicates the IO tag for this request. The IO tag is
142 * comprised of the task_index and a sequence count. The sequence count
143 * is utilized to help identify tasks from one life to another.
144 */
145 u16 io_tag;
146
147 /**
148 * This field specifies the protocol being utilized for this
149 * IO request.
150 */
151 SCIC_TRANSPORT_PROTOCOL protocol;
152
153 /**
154 * This field indicates the completion status taken from the SCUs
155 * completion code. It indicates the completion result for the SCU hardware.
156 */
157 u32 scu_status;
158
159 /**
160 * This field indicates the completion status returned to the SCI user. It
161 * indicates the users view of the io request completion.
162 */
163 u32 sci_status;
164
165 /**
166 * This field contains the value to be utilized when posting (e.g. Post_TC,
167 * Post_TC_Abort) this request to the silicon.
168 */
169 u32 post_context;
170
171 struct scu_task_context *task_context_buffer;
172 struct scu_task_context tc ____cacheline_aligned;
173
174 /* could be larger with sg chaining */
175 #define SCU_SGL_SIZE ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2)
176 struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));
177
178 /**
179 * This field indicates if this request is a task management request or
180 * normal IO request.
181 */
182 bool is_task_management_request;
183
184 /**
185 * This field indicates that this request contains an initialized started
186 * substate machine.
187 */
188 bool has_started_substate_machine;
189
190 /**
191 * This field is a pointer to the stored rx frame data. It is used in STP
192 * internal requests and SMP response frames. If this field is non-NULL the
193 * saved frame must be released on IO request completion.
194 *
195 * @todo In the future do we want to keep a list of RX frame buffers?
196 */
197 u32 saved_rx_frame_index;
198
199 /**
200 * This field specifies the data necessary to manage the sub-state
201 * machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state.
202 */
203 struct sci_base_state_machine started_substate_machine;
204
205 /**
206 * This field specifies the current state handlers in place for this
207 * IO Request object. This field is updated each time the request
208 * changes state.
209 */
210 const struct scic_sds_io_request_state_handler *state_handlers;
211
212 /**
213 * This field in the recorded device sequence for the io request. This is
214 * recorded during the build operation and is compared in the start
215 * operation. If the sequence is different then there was a change of
216 * devices from the build to start operations.
217 */
218 u8 device_sequence;
219
220 union {
221 struct {
222 union {
223 struct ssp_cmd_iu cmd;
224 struct ssp_task_iu tmf;
225 };
226 union {
227 struct ssp_response_iu rsp;
228 u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
229 };
230 } ssp;
231
232 struct {
233 struct smp_req cmd;
234 struct smp_resp rsp;
235 } smp;
236
237 struct {
238 struct scic_sds_stp_request req;
239 struct host_to_dev_fis cmd;
240 struct dev_to_host_fis rsp;
241 } stp;
242 };
243
244};
245
246static inline struct scic_sds_request *to_sci_req(struct scic_sds_stp_request *stp_req)
247{
248 struct scic_sds_request *sci_req;
249
250 sci_req = container_of(stp_req, typeof(*sci_req), stp.req);
251 return sci_req;
252}
253
254/**
255 * enum sci_base_request_states - This enumeration depicts all the states for
256 * the common request state machine.
257 *
258 *
259 */
260enum sci_base_request_states {
261 /**
262 * Simply the initial state for the base request state machine.
263 */
264 SCI_BASE_REQUEST_STATE_INITIAL,
265
266 /**
267 * This state indicates that the request has been constructed. This state
268 * is entered from the INITIAL state.
269 */
270 SCI_BASE_REQUEST_STATE_CONSTRUCTED,
271
272 /**
273 * This state indicates that the request has been started. This state is
274 * entered from the CONSTRUCTED state.
275 */
276 SCI_BASE_REQUEST_STATE_STARTED,
277
278 /**
279 * This state indicates that the request has completed.
280 * This state is entered from the STARTED state. This state is entered from
281 * the ABORTING state.
282 */
283 SCI_BASE_REQUEST_STATE_COMPLETED,
284
285 /**
286 * This state indicates that the request is in the process of being
287 * terminated/aborted.
288 * This state is entered from the CONSTRUCTED state.
289 * This state is entered from the STARTED state.
290 */
291 SCI_BASE_REQUEST_STATE_ABORTING,
292
293 /**
294 * Simply the final state for the base request state machine.
295 */
296 SCI_BASE_REQUEST_STATE_FINAL,
297};
298
299typedef enum sci_status (*scic_sds_io_request_handler_t)
300 (struct scic_sds_request *request);
301typedef enum sci_status (*scic_sds_io_request_frame_handler_t)
302 (struct scic_sds_request *req, u32 frame);
303typedef enum sci_status (*scic_sds_io_request_event_handler_t)
304 (struct scic_sds_request *req, u32 event);
305typedef enum sci_status (*scic_sds_io_request_task_completion_handler_t)
306 (struct scic_sds_request *req, u32 completion_code);
307
308/**
309 * struct scic_sds_io_request_state_handler - This is the SDS core definition
310 * of the state handlers.
311 *
312 *
313 */
314struct scic_sds_io_request_state_handler {
315 /**
316 * The start_handler specifies the method invoked when a user attempts to
317 * start a request.
318 */
319 scic_sds_io_request_handler_t start_handler;
320
321 /**
322 * The abort_handler specifies the method invoked when a user attempts to
323 * abort a request.
324 */
325 scic_sds_io_request_handler_t abort_handler;
326
327 /**
328 * The complete_handler specifies the method invoked when a user attempts to
329 * complete a request.
330 */
331 scic_sds_io_request_handler_t complete_handler;
332
333 scic_sds_io_request_task_completion_handler_t tc_completion_handler;
334 scic_sds_io_request_event_handler_t event_handler;
335 scic_sds_io_request_frame_handler_t frame_handler;
336
337};
338
339extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[];
340
341/**
342 * scic_sds_request_get_controller() -
343 *
344 * This macro will return the controller for this io request object
345 */
346#define scic_sds_request_get_controller(sci_req) \
347 ((sci_req)->owning_controller)
348
349/**
350 * scic_sds_request_get_device() -
351 *
352 * This macro will return the device for this io request object
353 */
354#define scic_sds_request_get_device(sci_req) \
355 ((sci_req)->target_device)
356
357/**
358 * scic_sds_request_get_port() -
359 *
360 * This macro will return the port for this io request object
361 */
362#define scic_sds_request_get_port(sci_req) \
363 scic_sds_remote_device_get_port(scic_sds_request_get_device(sci_req))
364
365/**
366 * scic_sds_request_get_post_context() -
367 *
368 * This macro returns the constructed post context result for the io request.
369 */
370#define scic_sds_request_get_post_context(sci_req) \
371 ((sci_req)->post_context)
372
373/**
374 * scic_sds_request_get_task_context() -
375 *
376 * This is a helper macro to return the os handle for this request object.
377 */
378#define scic_sds_request_get_task_context(request) \
379 ((request)->task_context_buffer)
380
381/**
382 * scic_sds_request_set_status() -
383 *
384 * This macro will set the scu hardware status and sci request completion
385 * status for an io request.
386 */
387#define scic_sds_request_set_status(request, scu_status_code, sci_status_code) \
388 { \
389 (request)->scu_status = (scu_status_code); \
390 (request)->sci_status = (sci_status_code); \
391 }
392
393#define scic_sds_request_complete(a_request) \
394 ((a_request)->state_handlers->complete_handler(a_request))
395
396
397extern enum sci_status
398scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code);
399
400/**
401 * SCU_SGL_ZERO() -
402 *
403 * This macro zeros the hardware SGL element data
404 */
405#define SCU_SGL_ZERO(scu_sge) \
406 { \
407 (scu_sge).length = 0; \
408 (scu_sge).address_lower = 0; \
409 (scu_sge).address_upper = 0; \
410 (scu_sge).address_modifier = 0; \
411 }
412
413/**
414 * SCU_SGL_COPY() -
415 *
416 * This macro copys the SGL Element data from the host os to the hardware SGL
417 * elment data
418 */
419#define SCU_SGL_COPY(scu_sge, os_sge) \
420 { \
421 (scu_sge).length = sg_dma_len(sg); \
422 (scu_sge).address_upper = \
423 upper_32_bits(sg_dma_address(sg)); \
424 (scu_sge).address_lower = \
425 lower_32_bits(sg_dma_address(sg)); \
426 (scu_sge).address_modifier = 0; \
427 }
428
429/**
430 * scic_sds_request_get_user_request() -
431 *
432 * This is a helper macro to return the os handle for this request object.
433 */
434#define scic_sds_request_get_user_request(request) \
435 ((request)->user_request)
436
437/*
438 * *****************************************************************************
439 * * CORE REQUEST PROTOTYPES
440 * ***************************************************************************** */
441
442void scic_sds_request_build_sgl(
443 struct scic_sds_request *sci_req);
444
445
446
447void scic_sds_stp_request_assign_buffers(
448 struct scic_sds_request *sci_req);
449
450void scic_sds_smp_request_assign_buffers(
451 struct scic_sds_request *sci_req);
452
453/* --------------------------------------------------------------------------- */
454
455enum sci_status scic_sds_request_start(
456 struct scic_sds_request *sci_req);
457
458enum sci_status scic_sds_io_request_terminate(
459 struct scic_sds_request *sci_req);
460
461enum sci_status scic_sds_io_request_complete(
462 struct scic_sds_request *sci_req);
463
464void scic_sds_io_request_copy_response(
465 struct scic_sds_request *sci_req);
466
467enum sci_status scic_sds_io_request_event_handler(
468 struct scic_sds_request *sci_req,
469 u32 event_code);
470
471enum sci_status scic_sds_io_request_frame_handler(
472 struct scic_sds_request *sci_req,
473 u32 frame_index);
474
475
476enum sci_status scic_sds_task_request_terminate(
477 struct scic_sds_request *sci_req);
478
479/*
480 * *****************************************************************************
481 * * STARTED STATE HANDLERS
482 * ***************************************************************************** */
483
484enum sci_status scic_sds_request_started_state_abort_handler(
485 struct scic_sds_request *sci_req);
486
487enum sci_status scic_sds_request_started_state_tc_completion_handler(
488 struct scic_sds_request *sci_req,
489 u32 completion_code);
490
491#endif /* _SCIC_SDS_IO_REQUEST_H_ */
diff --git a/drivers/scsi/isci/core/scic_sds_smp_request.h b/drivers/scsi/isci/core/scic_sds_smp_request.h
deleted file mode 100644
index f432b7a182cd..000000000000
--- a/drivers/scsi/isci/core/scic_sds_smp_request.h
+++ /dev/null
@@ -1,67 +0,0 @@
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 * * Neither the name of Intel Corporation nor the names of its
40 * contributors may be used to endorse or promote products derived
41 * from this software without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 */
55#ifndef _SCIC_SDS_SMP_REQUEST_T_
56#define _SCIC_SDS_SMP_REQUEST_T_
57
58#include "scic_sds_request.h"
59
60
61u32 scic_sds_smp_request_get_object_size(void);
62
63
64void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
65
66#endif /* _SCIC_SDS_SMP_REQUEST_T_ */
67
diff --git a/drivers/scsi/isci/core/scic_sds_stp_packet_request.h b/drivers/scsi/isci/core/scic_sds_stp_packet_request.h
deleted file mode 100644
index e94d689e5103..000000000000
--- a/drivers/scsi/isci/core/scic_sds_stp_packet_request.h
+++ /dev/null
@@ -1,113 +0,0 @@
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 * * Neither the name of Intel Corporation nor the names of its
40 * contributors may be used to endorse or promote products derived
41 * from this software without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 */
55#ifndef _SCIC_SDS_STP_PACKET_REQUEST_H_
56#define _SCIC_SDS_STP_PACKET_REQUEST_H_
57
58#include "scic_sds_stp_request.h"
59
60/**
61 * This file contains the structures and constants for PACKET protocol requests.
62 *
63 *
64 */
65
66
67/**
68 *
69 *
70 * This is the enumeration of the SATA PIO DATA IN started substate machine.
71 */
72enum _scic_sds_stp_packet_request_started_substates {
73 /**
74 * While in this state the IO request object is waiting for the TC completion
75 * notification for the H2D Register FIS
76 */
77 SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_TC_COMPLETION_SUBSTATE,
78
79 /**
80 * While in this state the IO request object is waiting for either a PIO Setup.
81 */
82 SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_PIO_SETUP_SUBSTATE,
83
84 /**
85 * While in this state the IO request object is waiting for TC completion for
86 * the Packet DMA DATA fis or Raw Frame.
87 */
88 SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_TC_COMPLETION_SUBSTATE,
89
90 /**
91 * The non-data IO transit to this state in this state after receiving TC
92 * completion. While in this state IO request object is waiting for D2H status
93 * frame as UF.
94 */
95 SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_D2H_FIS_SUBSTATE,
96
97 /**
98 * The IO transit to this state in this state if the previous TC completion status
99 * is not success and the atapi device is suspended due to target device failed the IO.
100 * While in this state IO request object is waiting for device coming out of the
101 * suspension state then complete the IO.
102 */
103 SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMPLETION_DELAY_SUBSTATE,
104};
105
106#define scic_sds_stp_packet_request_construct(request) SCI_FAILURE
107#define scu_stp_packet_request_command_phase_construct_task_context(reqeust, tc)
108#define scu_stp_packet_request_command_phase_reconstruct_raw_frame_task_context(reqeust, tc)
109#define scic_sds_stp_packet_request_process_status_fis(reqeust, fis) SCI_FAILURE
110#define scic_sds_stp_packet_internal_request_sense_build_sgl(request)
111
112#endif /* _SCIC_SDS_STP_PACKET_REQUEST_H_ */
113
diff --git a/drivers/scsi/isci/core/scic_sds_stp_pio_request.h b/drivers/scsi/isci/core/scic_sds_stp_pio_request.h
deleted file mode 100644
index e015a1114760..000000000000
--- a/drivers/scsi/isci/core/scic_sds_stp_pio_request.h
+++ /dev/null
@@ -1,104 +0,0 @@
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 * * Neither the name of Intel Corporation nor the names of its
40 * contributors may be used to endorse or promote products derived
41 * from this software without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 */
55
56#ifndef _SCIC_SDS_SATA_PIO_REQUEST_H_
57#define _SCIC_SDS_SATA_PIO_REQUEST_H_
58
59#include "scic_sds_request.h"
60#include "scu_task_context.h"
61
62/**
63 * This file contains the structures and constants for SATA PIO requests.
64 *
65 *
66 */
67
68
69/**
70 *
71 *
72 * This is the enumeration of the SATA PIO DATA IN started substate machine.
73 */
74enum _scic_sds_stp_request_started_pio_substates {
75 /**
76 * While in this state the IO request object is waiting for the TC completion
77 * notification for the H2D Register FIS
78 */
79 SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
80
81 /**
82 * While in this state the IO request object is waiting for either a PIO Setup
83 * FIS or a D2H register FIS. The type of frame received is based on the
84 * result of the prior frame and line conditions.
85 */
86 SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
87
88 /**
89 * While in this state the IO request object is waiting for a DATA frame from
90 * the device.
91 */
92 SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
93
94 /**
95 * While in this state the IO request object is waiting to transmit the next data
96 * frame to the device.
97 */
98 SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
99};
100
101struct scic_sds_stp_request;
102
103
104#endif /* _SCIC_SDS_SATA_PIO_REQUEST_H_ */
diff --git a/drivers/scsi/isci/core/scic_task_request.h b/drivers/scsi/isci/core/scic_task_request.h
deleted file mode 100644
index 790cee9b4af6..000000000000
--- a/drivers/scsi/isci/core/scic_task_request.h
+++ /dev/null
@@ -1,104 +0,0 @@
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 * * Neither the name of Intel Corporation nor the names of its
40 * contributors may be used to endorse or promote products derived
41 * from this software without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 */
55
56#ifndef _SCIC_TASK_REQUEST_H_
57#define _SCIC_TASK_REQUEST_H_
58
59#include "isci.h"
60
61struct scic_sds_request;
62struct scic_sds_remote_device;
63struct scic_sds_controller;
64
65
66enum sci_status scic_task_request_construct(
67 struct scic_sds_controller *scic_controller,
68 struct scic_sds_remote_device *scic_remote_device,
69 u16 io_tag, struct scic_sds_request *sci_req);
70
71/**
72 * scic_task_request_construct_ssp() - This method is called by the SCI user to
73 * construct all SCI Core SSP task management requests. Memory
74 * initialization and functionality common to all task request types is
75 * performed in this method.
76 * @scic_task_request: This parameter specifies the handle to the core task
77 * request object for which to construct a SATA specific task management
78 * request.
79 *
80 * Indicate if the controller successfully built the task request. SCI_SUCCESS
81 * This value is returned if the task request was successfully built.
82 */
83enum sci_status scic_task_request_construct_ssp(
84 struct scic_sds_request *scic_task_request);
85
86/**
87 * scic_task_request_construct_sata() - This method is called by the SCI user
88 * to construct all SCI Core SATA task management requests. Memory
89 * initialization and functionality common to all task request types is
90 * performed in this method.
91 * @scic_task_request_handle: This parameter specifies the handle to the core
92 * task request object for which to construct a SATA specific task
93 * management request.
94 *
95 * Indicate if the controller successfully built the task request. SCI_SUCCESS
96 * This value is returned if the task request was successfully built.
97 */
98enum sci_status scic_task_request_construct_sata(
99 struct scic_sds_request *scic_task_request_handle);
100
101
102
103#endif /* _SCIC_TASK_REQUEST_H_ */
104
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c
index 71a0466d1c8e..e1930da08d4e 100644
--- a/drivers/scsi/isci/host.c
+++ b/drivers/scsi/isci/host.c
@@ -61,9 +61,7 @@
61#include "probe_roms.h" 61#include "probe_roms.h"
62#include "remote_device.h" 62#include "remote_device.h"
63#include "request.h" 63#include "request.h"
64#include "scic_io_request.h"
65#include "scic_sds_port_configuration_agent.h" 64#include "scic_sds_port_configuration_agent.h"
66#include "sci_util.h"
67#include "scu_completion_codes.h" 65#include "scu_completion_codes.h"
68#include "scu_event_codes.h" 66#include "scu_event_codes.h"
69#include "registers.h" 67#include "registers.h"
diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h
index d288897b85fb..69826eac97b5 100644
--- a/drivers/scsi/isci/isci.h
+++ b/drivers/scsi/isci/isci.h
@@ -521,6 +521,25 @@ enum sci_task_status {
521 521
522}; 522};
523 523
524/**
525 * sci_swab32_cpy - convert between scsi and scu-hardware byte format
526 * @dest: receive the 4-byte endian swapped version of src
527 * @src: word aligned source buffer
528 *
529 * scu hardware handles SSP/SMP control, response, and unidentified
530 * frames in "big endian dword" order. Regardless of host endian this
531 * is always a swab32()-per-dword conversion of the standard definition,
532 * i.e. single byte fields swapped and multi-byte fields in little-
533 * endian
534 */
535static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
536{
537 u32 *dest = _dest, *src = _src;
538
539 while (--word_cnt >= 0)
540 dest[word_cnt] = swab32(src[word_cnt]);
541}
542
524extern unsigned char no_outbound_task_to; 543extern unsigned char no_outbound_task_to;
525extern u16 ssp_max_occ_to; 544extern u16 ssp_max_occ_to;
526extern u16 stp_max_occ_to; 545extern u16 stp_max_occ_to;
diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c
index f44fa20cad96..d4bf6d2d8c9b 100644
--- a/drivers/scsi/isci/port.c
+++ b/drivers/scsi/isci/port.c
@@ -55,7 +55,6 @@
55 55
56#include <linux/workqueue.h> 56#include <linux/workqueue.h>
57#include "isci.h" 57#include "isci.h"
58#include "scic_io_request.h"
59#include "scic_phy.h" 58#include "scic_phy.h"
60#include "scic_sds_phy.h" 59#include "scic_sds_phy.h"
61#include "scic_port.h" 60#include "scic_port.h"
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c
index 00334b9ccd80..23390102514f 100644
--- a/drivers/scsi/isci/remote_device.c
+++ b/drivers/scsi/isci/remote_device.c
@@ -57,14 +57,11 @@
57#include "port.h" 57#include "port.h"
58#include "remote_device.h" 58#include "remote_device.h"
59#include "request.h" 59#include "request.h"
60#include "scic_io_request.h"
61#include "scic_phy.h" 60#include "scic_phy.h"
62#include "scic_port.h" 61#include "scic_port.h"
63#include "scic_sds_phy.h" 62#include "scic_sds_phy.h"
64#include "scic_sds_port.h" 63#include "scic_sds_port.h"
65#include "remote_node_context.h" 64#include "remote_node_context.h"
66#include "scic_sds_request.h"
67#include "sci_util.h"
68#include "scu_event_codes.h" 65#include "scu_event_codes.h"
69#include "task.h" 66#include "task.h"
70 67
diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c
index 5891f3d50177..35231e7407b1 100644
--- a/drivers/scsi/isci/remote_node_context.c
+++ b/drivers/scsi/isci/remote_node_context.c
@@ -58,7 +58,6 @@
58#include "scic_sds_port.h" 58#include "scic_sds_port.h"
59#include "remote_device.h" 59#include "remote_device.h"
60#include "remote_node_context.h" 60#include "remote_node_context.h"
61#include "sci_util.h"
62#include "scu_event_codes.h" 61#include "scu_event_codes.h"
63#include "scu_task_context.h" 62#include "scu_task_context.h"
64 63
diff --git a/drivers/scsi/isci/remote_node_table.c b/drivers/scsi/isci/remote_node_table.c
index 80f44c25f45f..6b9465a5a217 100644
--- a/drivers/scsi/isci/remote_node_table.c
+++ b/drivers/scsi/isci/remote_node_table.c
@@ -59,7 +59,6 @@
59 * 59 *
60 * 60 *
61 */ 61 */
62#include "sci_util.h"
63#include "remote_node_table.h" 62#include "remote_node_table.h"
64#include "remote_node_context.h" 63#include "remote_node_context.h"
65 64
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
index 4961ee347091..857ad067f11c 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -54,407 +54,1128 @@
54 */ 54 */
55 55
56#include "isci.h" 56#include "isci.h"
57#include "scic_io_request.h"
58#include "scic_task_request.h"
59#include "scic_port.h" 57#include "scic_port.h"
60#include "task.h" 58#include "task.h"
61#include "request.h" 59#include "request.h"
62#include "sata.h" 60#include "sata.h"
63#include "scu_completion_codes.h" 61#include "scu_completion_codes.h"
64#include "scic_sds_request.h"
65#include "sas.h" 62#include "sas.h"
66 63
67static enum sci_status isci_request_ssp_request_construct( 64/**
68 struct isci_request *request) 65 * This method returns the sgl element pair for the specificed sgl_pair index.
66 * @sci_req: This parameter specifies the IO request for which to retrieve
67 * the Scatter-Gather List element pair.
68 * @sgl_pair_index: This parameter specifies the index into the SGL element
69 * pair to be retrieved.
70 *
71 * This method returns a pointer to an struct scu_sgl_element_pair.
72 */
73static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair(
74 struct scic_sds_request *sci_req,
75 u32 sgl_pair_index
76 ) {
77 struct scu_task_context *task_context;
78
79 task_context = (struct scu_task_context *)sci_req->task_context_buffer;
80
81 if (sgl_pair_index == 0) {
82 return &task_context->sgl_pair_ab;
83 } else if (sgl_pair_index == 1) {
84 return &task_context->sgl_pair_cd;
85 }
86
87 return &sci_req->sg_table[sgl_pair_index - 2];
88}
89
90/**
91 * This function will build the SGL list for an IO request.
92 * @sci_req: This parameter specifies the IO request for which to build
93 * the Scatter-Gather List.
94 *
95 */
96void scic_sds_request_build_sgl(struct scic_sds_request *sds_request)
69{ 97{
70 enum sci_status status; 98 struct isci_request *isci_request = sci_req_to_ireq(sds_request);
99 struct isci_host *isci_host = isci_request->isci_host;
100 struct sas_task *task = isci_request_access_task(isci_request);
101 struct scatterlist *sg = NULL;
102 dma_addr_t dma_addr;
103 u32 sg_idx = 0;
104 struct scu_sgl_element_pair *scu_sg = NULL;
105 struct scu_sgl_element_pair *prev_sg = NULL;
106
107 if (task->num_scatter > 0) {
108 sg = task->scatter;
109
110 while (sg) {
111 scu_sg = scic_sds_request_get_sgl_element_pair(
112 sds_request,
113 sg_idx);
114
115 SCU_SGL_COPY(scu_sg->A, sg);
116
117 sg = sg_next(sg);
118
119 if (sg) {
120 SCU_SGL_COPY(scu_sg->B, sg);
121 sg = sg_next(sg);
122 } else
123 SCU_SGL_ZERO(scu_sg->B);
124
125 if (prev_sg) {
126 dma_addr =
127 scic_io_request_get_dma_addr(
128 sds_request,
129 scu_sg);
130
131 prev_sg->next_pair_upper =
132 upper_32_bits(dma_addr);
133 prev_sg->next_pair_lower =
134 lower_32_bits(dma_addr);
135 }
136
137 prev_sg = scu_sg;
138 sg_idx++;
139 }
140 } else { /* handle when no sg */
141 scu_sg = scic_sds_request_get_sgl_element_pair(sds_request,
142 sg_idx);
71 143
72 dev_dbg(&request->isci_host->pdev->dev, 144 dma_addr = dma_map_single(&isci_host->pdev->dev,
73 "%s: request = %p\n", 145 task->scatter,
74 __func__, 146 task->total_xfer_len,
75 request); 147 task->data_dir);
76 status = scic_io_request_construct_basic_ssp(&request->sci); 148
77 return status; 149 isci_request->zero_scatter_daddr = dma_addr;
150
151 scu_sg->A.length = task->total_xfer_len;
152 scu_sg->A.address_upper = upper_32_bits(dma_addr);
153 scu_sg->A.address_lower = lower_32_bits(dma_addr);
154 }
155
156 if (scu_sg) {
157 scu_sg->next_pair_upper = 0;
158 scu_sg->next_pair_lower = 0;
159 }
78} 160}
79 161
80static enum sci_status isci_request_stp_request_construct( 162static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req)
81 struct isci_request *request)
82{ 163{
83 struct sas_task *task = isci_request_access_task(request); 164 if (sci_req->was_tag_assigned_by_user == false)
84 enum sci_status status; 165 sci_req->task_context_buffer = &sci_req->tc;
85 struct host_to_dev_fis *register_fis; 166}
86 167
87 dev_dbg(&request->isci_host->pdev->dev, 168static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req)
88 "%s: request = %p\n", 169{
89 __func__, 170 struct ssp_cmd_iu *cmd_iu;
90 request); 171 struct isci_request *ireq = sci_req_to_ireq(sci_req);
172 struct sas_task *task = isci_request_access_task(ireq);
91 173
92 /* Get the host_to_dev_fis from the core and copy 174 cmd_iu = &sci_req->ssp.cmd;
93 * the fis from the task into it.
94 */
95 register_fis = isci_sata_task_to_fis_copy(task);
96 175
97 status = scic_io_request_construct_basic_sata(&request->sci); 176 memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8);
177 cmd_iu->add_cdb_len = 0;
178 cmd_iu->_r_a = 0;
179 cmd_iu->_r_b = 0;
180 cmd_iu->en_fburst = 0; /* unsupported */
181 cmd_iu->task_prio = task->ssp_task.task_prio;
182 cmd_iu->task_attr = task->ssp_task.task_attr;
183 cmd_iu->_r_c = 0;
98 184
99 /* Set the ncq tag in the fis, from the queue 185 sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb,
100 * command in the task. 186 sizeof(task->ssp_task.cdb) / sizeof(u32));
101 */ 187}
102 if (isci_sata_is_task_ncq(task)) {
103 188
104 isci_sata_set_ncq_tag( 189static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req)
105 register_fis, 190{
106 task 191 struct ssp_task_iu *task_iu;
107 ); 192 struct isci_request *ireq = sci_req_to_ireq(sci_req);
193 struct sas_task *task = isci_request_access_task(ireq);
194 struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
195
196 task_iu = &sci_req->ssp.tmf;
197
198 memset(task_iu, 0, sizeof(struct ssp_task_iu));
199
200 memcpy(task_iu->LUN, task->ssp_task.LUN, 8);
201
202 task_iu->task_func = isci_tmf->tmf_code;
203 task_iu->task_tag =
204 (ireq->ttype == tmf_task) ?
205 isci_tmf->io_tag :
206 SCI_CONTROLLER_INVALID_IO_TAG;
207}
208
209/**
210 * This method is will fill in the SCU Task Context for any type of SSP request.
211 * @sci_req:
212 * @task_context:
213 *
214 */
215static void scu_ssp_reqeust_construct_task_context(
216 struct scic_sds_request *sds_request,
217 struct scu_task_context *task_context)
218{
219 dma_addr_t dma_addr;
220 struct scic_sds_controller *controller;
221 struct scic_sds_remote_device *target_device;
222 struct scic_sds_port *target_port;
223
224 controller = scic_sds_request_get_controller(sds_request);
225 target_device = scic_sds_request_get_device(sds_request);
226 target_port = scic_sds_request_get_port(sds_request);
227
228 /* Fill in the TC with the its required data */
229 task_context->abort = 0;
230 task_context->priority = 0;
231 task_context->initiator_request = 1;
232 task_context->connection_rate = target_device->connection_rate;
233 task_context->protocol_engine_index =
234 scic_sds_controller_get_protocol_engine_group(controller);
235 task_context->logical_port_index =
236 scic_sds_port_get_index(target_port);
237 task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
238 task_context->valid = SCU_TASK_CONTEXT_VALID;
239 task_context->context_type = SCU_TASK_CONTEXT_TYPE;
240
241 task_context->remote_node_index =
242 scic_sds_remote_device_get_index(sds_request->target_device);
243 task_context->command_code = 0;
244
245 task_context->link_layer_control = 0;
246 task_context->do_not_dma_ssp_good_response = 1;
247 task_context->strict_ordering = 0;
248 task_context->control_frame = 0;
249 task_context->timeout_enable = 0;
250 task_context->block_guard_enable = 0;
251
252 task_context->address_modifier = 0;
253
254 /* task_context->type.ssp.tag = sci_req->io_tag; */
255 task_context->task_phase = 0x01;
256
257 if (sds_request->was_tag_assigned_by_user) {
258 /*
259 * Build the task context now since we have already read
260 * the data
261 */
262 sds_request->post_context =
263 (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
264 (scic_sds_controller_get_protocol_engine_group(
265 controller) <<
266 SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
267 (scic_sds_port_get_index(target_port) <<
268 SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
269 scic_sds_io_tag_get_index(sds_request->io_tag));
270 } else {
271 /*
272 * Build the task context now since we have already read
273 * the data
274 *
275 * I/O tag index is not assigned because we have to wait
276 * until we get a TCi
277 */
278 sds_request->post_context =
279 (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
280 (scic_sds_controller_get_protocol_engine_group(
281 owning_controller) <<
282 SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
283 (scic_sds_port_get_index(target_port) <<
284 SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
108 } 285 }
109 286
110 return status; 287 /*
288 * Copy the physical address for the command buffer to the
289 * SCU Task Context
290 */
291 dma_addr = scic_io_request_get_dma_addr(sds_request,
292 &sds_request->ssp.cmd);
293
294 task_context->command_iu_upper = upper_32_bits(dma_addr);
295 task_context->command_iu_lower = lower_32_bits(dma_addr);
296
297 /*
298 * Copy the physical address for the response buffer to the
299 * SCU Task Context
300 */
301 dma_addr = scic_io_request_get_dma_addr(sds_request,
302 &sds_request->ssp.rsp);
303
304 task_context->response_iu_upper = upper_32_bits(dma_addr);
305 task_context->response_iu_lower = lower_32_bits(dma_addr);
111} 306}
112 307
113/* 308/**
114 * isci_smp_request_build() - This function builds the smp request. 309 * This method is will fill in the SCU Task Context for a SSP IO request.
115 * @ireq: This parameter points to the isci_request allocated in the 310 * @sci_req:
116 * request construct function.
117 * 311 *
118 * SCI_SUCCESS on successfull completion, or specific failure code.
119 */ 312 */
120static enum sci_status isci_smp_request_build(struct isci_request *ireq) 313static void scu_ssp_io_request_construct_task_context(
314 struct scic_sds_request *sci_req,
315 enum dma_data_direction dir,
316 u32 len)
121{ 317{
122 enum sci_status status = SCI_FAILURE; 318 struct scu_task_context *task_context;
123 struct sas_task *task = isci_request_access_task(ireq);
124 struct scic_sds_request *sci_req = &ireq->sci;
125 319
126 dev_dbg(&ireq->isci_host->pdev->dev, 320 task_context = scic_sds_request_get_task_context(sci_req);
127 "%s: request = %p\n", __func__, ireq);
128 321
129 dev_dbg(&ireq->isci_host->pdev->dev, 322 scu_ssp_reqeust_construct_task_context(sci_req, task_context);
130 "%s: smp_req len = %d\n",
131 __func__,
132 task->smp_task.smp_req.length);
133 323
134 /* copy the smp_command to the address; */ 324 task_context->ssp_command_iu_length =
135 sg_copy_to_buffer(&task->smp_task.smp_req, 1, 325 sizeof(struct ssp_cmd_iu) / sizeof(u32);
136 &sci_req->smp.cmd, 326 task_context->type.ssp.frame_type = SSP_COMMAND;
137 sizeof(struct smp_req));
138 327
139 status = scic_io_request_construct_smp(sci_req); 328 switch (dir) {
140 if (status != SCI_SUCCESS) 329 case DMA_FROM_DEVICE:
141 dev_warn(&ireq->isci_host->pdev->dev, 330 case DMA_NONE:
142 "%s: failed with status = %d\n", 331 default:
143 __func__, 332 task_context->task_type = SCU_TASK_TYPE_IOREAD;
144 status); 333 break;
334 case DMA_TO_DEVICE:
335 task_context->task_type = SCU_TASK_TYPE_IOWRITE;
336 break;
337 }
145 338
146 return status; 339 task_context->transfer_length_bytes = len;
340
341 if (task_context->transfer_length_bytes > 0)
342 scic_sds_request_build_sgl(sci_req);
343}
344
345static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req)
346{
347 if (sci_req->was_tag_assigned_by_user == false)
348 sci_req->task_context_buffer = &sci_req->tc;
147} 349}
148 350
149/** 351/**
150 * isci_io_request_build() - This function builds the io request object. 352 * This method will fill in the SCU Task Context for a SSP Task request. The
151 * @isci_host: This parameter specifies the ISCI host object 353 * following important settings are utilized: -# priority ==
152 * @request: This parameter points to the isci_request object allocated in the 354 * SCU_TASK_PRIORITY_HIGH. This ensures that the task request is issued
153 * request construct function. 355 * ahead of other task destined for the same Remote Node. -# task_type ==
154 * @sci_device: This parameter is the handle for the sci core's remote device 356 * SCU_TASK_TYPE_IOREAD. This simply indicates that a normal request type
155 * object that is the destination for this request. 357 * (i.e. non-raw frame) is being utilized to perform task management. -#
358 * control_frame == 1. This ensures that the proper endianess is set so
359 * that the bytes are transmitted in the right order for a task frame.
360 * @sci_req: This parameter specifies the task request object being
361 * constructed.
156 * 362 *
157 * SCI_SUCCESS on successfull completion, or specific failure code.
158 */ 363 */
159static enum sci_status isci_io_request_build( 364static void scu_ssp_task_request_construct_task_context(
160 struct isci_host *isci_host, 365 struct scic_sds_request *sci_req)
161 struct isci_request *request,
162 struct isci_remote_device *isci_device)
163{ 366{
164 enum sci_status status = SCI_SUCCESS; 367 struct scu_task_context *task_context;
165 struct sas_task *task = isci_request_access_task(request);
166 struct scic_sds_remote_device *sci_device = &isci_device->sci;
167 368
168 dev_dbg(&isci_host->pdev->dev, 369 task_context = scic_sds_request_get_task_context(sci_req);
169 "%s: isci_device = 0x%p; request = %p, "
170 "num_scatter = %d\n",
171 __func__,
172 isci_device,
173 request,
174 task->num_scatter);
175 370
176 /* map the sgl addresses, if present. 371 scu_ssp_reqeust_construct_task_context(sci_req, task_context);
177 * libata does the mapping for sata devices
178 * before we get the request.
179 */
180 if (task->num_scatter &&
181 !sas_protocol_ata(task->task_proto) &&
182 !(SAS_PROTOCOL_SMP & task->task_proto)) {
183 372
184 request->num_sg_entries = dma_map_sg( 373 task_context->control_frame = 1;
185 &isci_host->pdev->dev, 374 task_context->priority = SCU_TASK_PRIORITY_HIGH;
186 task->scatter, 375 task_context->task_type = SCU_TASK_TYPE_RAW_FRAME;
187 task->num_scatter, 376 task_context->transfer_length_bytes = 0;
188 task->data_dir 377 task_context->type.ssp.frame_type = SSP_TASK;
189 ); 378 task_context->ssp_command_iu_length =
379 sizeof(struct ssp_task_iu) / sizeof(u32);
380}
190 381
191 if (request->num_sg_entries == 0)
192 return SCI_FAILURE_INSUFFICIENT_RESOURCES;
193 }
194 382
195 /* build the common request object. For now, 383/**
196 * we will let the core allocate the IO tag. 384 * This method constructs the SSP Command IU data for this ssp passthrough
197 */ 385 * comand request object.
198 status = scic_io_request_construct(&isci_host->sci, sci_device, 386 * @sci_req: This parameter specifies the request object for which the SSP
199 SCI_CONTROLLER_INVALID_IO_TAG, 387 * command information unit is being built.
200 &request->sci); 388 *
389 * enum sci_status, returns invalid parameter is cdb > 16
390 */
201 391
202 if (status != SCI_SUCCESS) { 392
203 dev_warn(&isci_host->pdev->dev, 393/**
204 "%s: failed request construct\n", 394 * This method constructs the SATA request object.
205 __func__); 395 * @sci_req:
206 return SCI_FAILURE; 396 * @sat_protocol:
397 * @transfer_length:
398 * @data_direction:
399 * @copy_rx_frame:
400 *
401 * enum sci_status
402 */
403static enum sci_status
404scic_io_request_construct_sata(struct scic_sds_request *sci_req,
405 u32 len,
406 enum dma_data_direction dir,
407 bool copy)
408{
409 enum sci_status status = SCI_SUCCESS;
410 struct isci_request *ireq = sci_req_to_ireq(sci_req);
411 struct sas_task *task = isci_request_access_task(ireq);
412
413 /* check for management protocols */
414 if (ireq->ttype == tmf_task) {
415 struct isci_tmf *tmf = isci_request_access_tmf(ireq);
416
417 if (tmf->tmf_code == isci_tmf_sata_srst_high ||
418 tmf->tmf_code == isci_tmf_sata_srst_low)
419 return scic_sds_stp_soft_reset_request_construct(sci_req);
420 else {
421 dev_err(scic_to_dev(sci_req->owning_controller),
422 "%s: Request 0x%p received un-handled SAT "
423 "management protocol 0x%x.\n",
424 __func__, sci_req, tmf->tmf_code);
425
426 return SCI_FAILURE;
427 }
207 } 428 }
208 429
209 switch (task->task_proto) { 430 if (!sas_protocol_ata(task->task_proto)) {
210 case SAS_PROTOCOL_SMP: 431 dev_err(scic_to_dev(sci_req->owning_controller),
211 status = isci_smp_request_build(request); 432 "%s: Non-ATA protocol in SATA path: 0x%x\n",
212 break; 433 __func__,
213 case SAS_PROTOCOL_SSP: 434 task->task_proto);
214 status = isci_request_ssp_request_construct(request);
215 break;
216 case SAS_PROTOCOL_SATA:
217 case SAS_PROTOCOL_STP:
218 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
219 status = isci_request_stp_request_construct(request);
220 break;
221 default:
222 dev_warn(&isci_host->pdev->dev,
223 "%s: unknown protocol\n", __func__);
224 return SCI_FAILURE; 435 return SCI_FAILURE;
436
225 } 437 }
226 438
439 /* non data */
440 if (task->data_dir == DMA_NONE)
441 return scic_sds_stp_non_data_request_construct(sci_req);
442
443 /* NCQ */
444 if (task->ata_task.use_ncq)
445 return scic_sds_stp_ncq_request_construct(sci_req, len, dir);
446
447 /* DMA */
448 if (task->ata_task.dma_xfer)
449 return scic_sds_stp_udma_request_construct(sci_req, len, dir);
450 else /* PIO */
451 return scic_sds_stp_pio_request_construct(sci_req, copy);
452
453 return status;
454}
455
456static enum sci_status scic_io_request_construct_basic_ssp(struct scic_sds_request *sci_req)
457{
458 struct isci_request *ireq = sci_req_to_ireq(sci_req);
459 struct sas_task *task = isci_request_access_task(ireq);
460
461 sci_req->protocol = SCIC_SSP_PROTOCOL;
462
463 scu_ssp_io_request_construct_task_context(sci_req,
464 task->data_dir,
465 task->total_xfer_len);
466
467 scic_sds_io_request_build_ssp_command_iu(sci_req);
468
469 sci_base_state_machine_change_state(
470 &sci_req->state_machine,
471 SCI_BASE_REQUEST_STATE_CONSTRUCTED);
472
473 return SCI_SUCCESS;
474}
475
476enum sci_status scic_task_request_construct_ssp(
477 struct scic_sds_request *sci_req)
478{
479 /* Construct the SSP Task SCU Task Context */
480 scu_ssp_task_request_construct_task_context(sci_req);
481
482 /* Fill in the SSP Task IU */
483 scic_sds_task_request_build_ssp_task_iu(sci_req);
484
485 sci_base_state_machine_change_state(&sci_req->state_machine,
486 SCI_BASE_REQUEST_STATE_CONSTRUCTED);
487
227 return SCI_SUCCESS; 488 return SCI_SUCCESS;
228} 489}
229 490
230 491
492static enum sci_status scic_io_request_construct_basic_sata(struct scic_sds_request *sci_req)
493{
494 enum sci_status status;
495 struct scic_sds_stp_request *stp_req;
496 bool copy = false;
497 struct isci_request *isci_request = sci_req_to_ireq(sci_req);
498 struct sas_task *task = isci_request_access_task(isci_request);
499
500 stp_req = &sci_req->stp.req;
501 sci_req->protocol = SCIC_STP_PROTOCOL;
502
503 copy = (task->data_dir == DMA_NONE) ? false : true;
504
505 status = scic_io_request_construct_sata(sci_req,
506 task->total_xfer_len,
507 task->data_dir,
508 copy);
509
510 if (status == SCI_SUCCESS)
511 sci_base_state_machine_change_state(&sci_req->state_machine,
512 SCI_BASE_REQUEST_STATE_CONSTRUCTED);
513
514 return status;
515}
516
517
518enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req)
519{
520 enum sci_status status = SCI_SUCCESS;
521 struct isci_request *ireq = sci_req_to_ireq(sci_req);
522
523 /* check for management protocols */
524 if (ireq->ttype == tmf_task) {
525 struct isci_tmf *tmf = isci_request_access_tmf(ireq);
526
527 if (tmf->tmf_code == isci_tmf_sata_srst_high ||
528 tmf->tmf_code == isci_tmf_sata_srst_low) {
529 status = scic_sds_stp_soft_reset_request_construct(sci_req);
530 } else {
531 dev_err(scic_to_dev(sci_req->owning_controller),
532 "%s: Request 0x%p received un-handled SAT "
533 "Protocol 0x%x.\n",
534 __func__, sci_req, tmf->tmf_code);
535
536 return SCI_FAILURE;
537 }
538 }
539
540 if (status == SCI_SUCCESS)
541 sci_base_state_machine_change_state(
542 &sci_req->state_machine,
543 SCI_BASE_REQUEST_STATE_CONSTRUCTED);
544
545 return status;
546}
547
231/** 548/**
232 * isci_request_alloc_core() - This function gets the request object from the 549 * sci_req_tx_bytes - bytes transferred when reply underruns request
233 * isci_host dma cache. 550 * @sci_req: request that was terminated early
234 * @isci_host: This parameter specifies the ISCI host object
235 * @isci_request: This parameter will contain the pointer to the new
236 * isci_request object.
237 * @isci_device: This parameter is the pointer to the isci remote device object
238 * that is the destination for this request.
239 * @gfp_flags: This parameter specifies the os allocation flags.
240 *
241 * SCI_SUCCESS on successfull completion, or specific failure code.
242 */ 551 */
243static int isci_request_alloc_core( 552#define SCU_TASK_CONTEXT_SRAM 0x200000
244 struct isci_host *isci_host, 553static u32 sci_req_tx_bytes(struct scic_sds_request *sci_req)
245 struct isci_request **isci_request,
246 struct isci_remote_device *isci_device,
247 gfp_t gfp_flags)
248{ 554{
249 int ret = 0; 555 struct scic_sds_controller *scic = sci_req->owning_controller;
250 dma_addr_t handle; 556 u32 ret_val = 0;
251 struct isci_request *request;
252 557
558 if (readl(&scic->smu_registers->address_modifier) == 0) {
559 void __iomem *scu_reg_base = scic->scu_registers;
253 560
254 /* get pointer to dma memory. This actually points 561 /* get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where
255 * to both the isci_remote_device object and the 562 * BAR1 is the scu_registers
256 * sci object. The isci object is at the beginning 563 * 0x20002C = 0x200000 + 0x2c
257 * of the memory allocated here. 564 * = start of task context SRAM + offset of (type.ssp.data_offset)
258 */ 565 * TCi is the io_tag of struct scic_sds_request
259 request = dma_pool_alloc(isci_host->dma_pool, gfp_flags, &handle); 566 */
260 if (!request) { 567 ret_val = readl(scu_reg_base +
261 dev_warn(&isci_host->pdev->dev, 568 (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) +
262 "%s: dma_pool_alloc returned NULL\n", __func__); 569 ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(sci_req->io_tag)));
263 return -ENOMEM;
264 } 570 }
265 571
266 /* initialize the request object. */ 572 return ret_val;
267 spin_lock_init(&request->state_lock); 573}
268 request->request_daddr = handle;
269 request->isci_host = isci_host;
270 request->isci_device = isci_device;
271 request->io_request_completion = NULL;
272 request->terminated = false;
273 574
274 request->num_sg_entries = 0; 575enum sci_status
576scic_sds_request_start(struct scic_sds_request *request)
577{
578 if (request->device_sequence !=
579 scic_sds_remote_device_get_sequence(request->target_device))
580 return SCI_FAILURE;
275 581
276 request->complete_in_target = false; 582 if (request->state_handlers->start_handler)
583 return request->state_handlers->start_handler(request);
277 584
278 INIT_LIST_HEAD(&request->completed_node); 585 dev_warn(scic_to_dev(request->owning_controller),
279 INIT_LIST_HEAD(&request->dev_node); 586 "%s: SCIC IO Request requested to start while in wrong "
587 "state %d\n",
588 __func__,
589 sci_base_state_machine_get_state(&request->state_machine));
280 590
281 *isci_request = request; 591 return SCI_FAILURE_INVALID_STATE;
282 isci_request_change_state(request, allocated); 592}
283 593
284 return ret; 594enum sci_status
595scic_sds_io_request_terminate(struct scic_sds_request *request)
596{
597 if (request->state_handlers->abort_handler)
598 return request->state_handlers->abort_handler(request);
599
600 dev_warn(scic_to_dev(request->owning_controller),
601 "%s: SCIC IO Request requested to abort while in wrong "
602 "state %d\n",
603 __func__,
604 sci_base_state_machine_get_state(&request->state_machine));
605
606 return SCI_FAILURE_INVALID_STATE;
285} 607}
286 608
287static int isci_request_alloc_io( 609enum sci_status scic_sds_io_request_event_handler(
288 struct isci_host *isci_host, 610 struct scic_sds_request *request,
289 struct sas_task *task, 611 u32 event_code)
290 struct isci_request **isci_request,
291 struct isci_remote_device *isci_device,
292 gfp_t gfp_flags)
293{ 612{
294 int retval = isci_request_alloc_core(isci_host, isci_request, 613 if (request->state_handlers->event_handler)
295 isci_device, gfp_flags); 614 return request->state_handlers->event_handler(request, event_code);
296 615
297 if (!retval) { 616 dev_warn(scic_to_dev(request->owning_controller),
298 (*isci_request)->ttype_ptr.io_task_ptr = task; 617 "%s: SCIC IO Request given event code notification %x while "
299 (*isci_request)->ttype = io_task; 618 "in wrong state %d\n",
619 __func__,
620 event_code,
621 sci_base_state_machine_get_state(&request->state_machine));
300 622
301 task->lldd_task = *isci_request; 623 return SCI_FAILURE_INVALID_STATE;
302 }
303 return retval;
304} 624}
305 625
306/** 626/**
307 * isci_request_alloc_tmf() - This function gets the request object from the
308 * isci_host dma cache and initializes the relevant fields as a sas_task.
309 * @isci_host: This parameter specifies the ISCI host object
310 * @sas_task: This parameter is the task struct from the upper layer driver.
311 * @isci_request: This parameter will contain the pointer to the new
312 * isci_request object.
313 * @isci_device: This parameter is the pointer to the isci remote device object
314 * that is the destination for this request.
315 * @gfp_flags: This parameter specifies the os allocation flags.
316 * 627 *
317 * SCI_SUCCESS on successfull completion, or specific failure code. 628 * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start
629 * operation is to be executed.
630 * @frame_index: The frame index returned by the hardware for the reqeust
631 * object.
632 *
633 * This method invokes the core state frame handler for the
634 * SCIC_SDS_IO_REQUEST_T object. enum sci_status
318 */ 635 */
319int isci_request_alloc_tmf( 636enum sci_status scic_sds_io_request_frame_handler(
320 struct isci_host *isci_host, 637 struct scic_sds_request *request,
321 struct isci_tmf *isci_tmf, 638 u32 frame_index)
322 struct isci_request **isci_request,
323 struct isci_remote_device *isci_device,
324 gfp_t gfp_flags)
325{ 639{
326 int retval = isci_request_alloc_core(isci_host, isci_request, 640 if (request->state_handlers->frame_handler)
327 isci_device, gfp_flags); 641 return request->state_handlers->frame_handler(request, frame_index);
642
643 dev_warn(scic_to_dev(request->owning_controller),
644 "%s: SCIC IO Request given unexpected frame %x while in "
645 "state %d\n",
646 __func__,
647 frame_index,
648 sci_base_state_machine_get_state(&request->state_machine));
649
650 scic_sds_controller_release_frame(request->owning_controller, frame_index);
651 return SCI_FAILURE_INVALID_STATE;
652}
328 653
329 if (!retval) { 654/*
655 * This function copies response data for requests returning response data
656 * instead of sense data.
657 * @sci_req: This parameter specifies the request object for which to copy
658 * the response data.
659 */
660void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req)
661{
662 void *resp_buf;
663 u32 len;
664 struct ssp_response_iu *ssp_response;
665 struct isci_request *ireq = sci_req_to_ireq(sci_req);
666 struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
330 667
331 (*isci_request)->ttype_ptr.tmf_task_ptr = isci_tmf; 668 ssp_response = &sci_req->ssp.rsp;
332 (*isci_request)->ttype = tmf_task; 669
670 resp_buf = &isci_tmf->resp.resp_iu;
671
672 len = min_t(u32,
673 SSP_RESP_IU_MAX_SIZE,
674 be32_to_cpu(ssp_response->response_data_len));
675
676 memcpy(resp_buf, ssp_response->resp_data, len);
677}
678
679/*
680 * This method implements the action taken when a constructed
681 * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request.
682 * This method will, if necessary, allocate a TCi for the io request object and
683 * then will, if necessary, copy the constructed TC data into the actual TC
684 * buffer. If everything is successful the post context field is updated with
685 * the TCi so the controller can post the request to the hardware. enum sci_status
686 * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES
687 */
688static enum sci_status scic_sds_request_constructed_state_start_handler(
689 struct scic_sds_request *request)
690{
691 struct scu_task_context *task_context;
692
693 if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
694 request->io_tag =
695 scic_controller_allocate_io_tag(request->owning_controller);
333 } 696 }
334 return retval; 697
698 /* Record the IO Tag in the request */
699 if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) {
700 task_context = request->task_context_buffer;
701
702 task_context->task_index = scic_sds_io_tag_get_index(request->io_tag);
703
704 switch (task_context->protocol_type) {
705 case SCU_TASK_CONTEXT_PROTOCOL_SMP:
706 case SCU_TASK_CONTEXT_PROTOCOL_SSP:
707 /* SSP/SMP Frame */
708 task_context->type.ssp.tag = request->io_tag;
709 task_context->type.ssp.target_port_transfer_tag = 0xFFFF;
710 break;
711
712 case SCU_TASK_CONTEXT_PROTOCOL_STP:
713 /*
714 * STP/SATA Frame
715 * task_context->type.stp.ncq_tag = request->ncq_tag; */
716 break;
717
718 case SCU_TASK_CONTEXT_PROTOCOL_NONE:
719 /* / @todo When do we set no protocol type? */
720 break;
721
722 default:
723 /* This should never happen since we build the IO requests */
724 break;
725 }
726
727 /*
728 * Check to see if we need to copy the task context buffer
729 * or have been building into the task context buffer */
730 if (request->was_tag_assigned_by_user == false) {
731 scic_sds_controller_copy_task_context(
732 request->owning_controller, request);
733 }
734
735 /* Add to the post_context the io tag value */
736 request->post_context |= scic_sds_io_tag_get_index(request->io_tag);
737
738 /* Everything is good go ahead and change state */
739 sci_base_state_machine_change_state(&request->state_machine,
740 SCI_BASE_REQUEST_STATE_STARTED);
741
742 return SCI_SUCCESS;
743 }
744
745 return SCI_FAILURE_INSUFFICIENT_RESOURCES;
335} 746}
336 747
337/** 748/*
338 * isci_request_execute() - This function allocates the isci_request object, 749 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
339 * all fills in some common fields. 750 * object receives a scic_sds_request_terminate() request. Since the request
340 * @isci_host: This parameter specifies the ISCI host object 751 * has not yet been posted to the hardware the request transitions to the
341 * @sas_task: This parameter is the task struct from the upper layer driver. 752 * completed state. enum sci_status SCI_SUCCESS
342 * @isci_request: This parameter will contain the pointer to the new 753 */
343 * isci_request object. 754static enum sci_status scic_sds_request_constructed_state_abort_handler(
344 * @gfp_flags: This parameter specifies the os allocation flags. 755 struct scic_sds_request *request)
756{
757 /*
758 * This request has been terminated by the user make sure that the correct
759 * status code is returned */
760 scic_sds_request_set_status(request,
761 SCU_TASK_DONE_TASK_ABORT,
762 SCI_FAILURE_IO_TERMINATED);
763
764 sci_base_state_machine_change_state(&request->state_machine,
765 SCI_BASE_REQUEST_STATE_COMPLETED);
766 return SCI_SUCCESS;
767}
768
769/*
770 * *****************************************************************************
771 * * STARTED STATE HANDLERS
772 * ***************************************************************************** */
773
774/*
775 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
776 * object receives a scic_sds_request_terminate() request. Since the request
777 * has been posted to the hardware the io request state is changed to the
778 * aborting state. enum sci_status SCI_SUCCESS
779 */
780enum sci_status scic_sds_request_started_state_abort_handler(
781 struct scic_sds_request *request)
782{
783 if (request->has_started_substate_machine)
784 sci_base_state_machine_stop(&request->started_substate_machine);
785
786 sci_base_state_machine_change_state(&request->state_machine,
787 SCI_BASE_REQUEST_STATE_ABORTING);
788 return SCI_SUCCESS;
789}
790
791/*
792 * scic_sds_request_started_state_tc_completion_handler() - This method process
793 * TC (task context) completions for normal IO request (i.e. Task/Abort
794 * Completions of type 0). This method will update the
795 * SCIC_SDS_IO_REQUEST_T::status field.
796 * @sci_req: This parameter specifies the request for which a completion
797 * occurred.
798 * @completion_code: This parameter specifies the completion code received from
799 * the SCU.
345 * 800 *
346 * SCI_SUCCESS on successfull completion, or specific failure code.
347 */ 801 */
348int isci_request_execute( 802static enum sci_status
349 struct isci_host *isci_host, 803scic_sds_request_started_state_tc_completion_handler(struct scic_sds_request *sci_req,
350 struct sas_task *task, 804 u32 completion_code)
351 struct isci_request **isci_request,
352 gfp_t gfp_flags)
353{ 805{
354 int ret = 0; 806 u8 datapres;
355 struct scic_sds_remote_device *sci_device; 807 struct ssp_response_iu *resp_iu;
356 enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
357 struct isci_remote_device *isci_device;
358 struct isci_request *request;
359 unsigned long flags;
360 808
361 isci_device = task->dev->lldd_dev; 809 /*
362 sci_device = &isci_device->sci; 810 * TODO: Any SDMA return code of other than 0 is bad
811 * decode 0x003C0000 to determine SDMA status
812 */
813 switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
814 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
815 scic_sds_request_set_status(sci_req,
816 SCU_TASK_DONE_GOOD,
817 SCI_SUCCESS);
818 break;
363 819
364 /* do common allocation and init of request object. */ 820 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP):
365 ret = isci_request_alloc_io( 821 {
366 isci_host, 822 /*
367 task, 823 * There are times when the SCU hardware will return an early
368 &request, 824 * response because the io request specified more data than is
369 isci_device, 825 * returned by the target device (mode pages, inquiry data,
370 gfp_flags 826 * etc.). We must check the response stats to see if this is
371 ); 827 * truly a failed request or a good request that just got
828 * completed early.
829 */
830 struct ssp_response_iu *resp = &sci_req->ssp.rsp;
831 ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
832
833 sci_swab32_cpy(&sci_req->ssp.rsp,
834 &sci_req->ssp.rsp,
835 word_cnt);
836
837 if (resp->status == 0) {
838 scic_sds_request_set_status(
839 sci_req,
840 SCU_TASK_DONE_GOOD,
841 SCI_SUCCESS_IO_DONE_EARLY);
842 } else {
843 scic_sds_request_set_status(
844 sci_req,
845 SCU_TASK_DONE_CHECK_RESPONSE,
846 SCI_FAILURE_IO_RESPONSE_VALID);
847 }
848 }
849 break;
372 850
373 if (ret) 851 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE):
374 goto out; 852 {
853 ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
375 854
376 status = isci_io_request_build(isci_host, request, isci_device); 855 sci_swab32_cpy(&sci_req->ssp.rsp,
377 if (status != SCI_SUCCESS) { 856 &sci_req->ssp.rsp,
378 dev_warn(&isci_host->pdev->dev, 857 word_cnt);
379 "%s: request_construct failed - status = 0x%x\n", 858
380 __func__, 859 scic_sds_request_set_status(sci_req,
381 status); 860 SCU_TASK_DONE_CHECK_RESPONSE,
382 goto out; 861 SCI_FAILURE_IO_RESPONSE_VALID);
862 break;
383 } 863 }
384 864
385 spin_lock_irqsave(&isci_host->scic_lock, flags); 865 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR):
866 /*
867 * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame
868 * guaranteed to be received before this completion status is
869 * posted?
870 */
871 resp_iu = &sci_req->ssp.rsp;
872 datapres = resp_iu->datapres;
873
874 if ((datapres == 0x01) || (datapres == 0x02)) {
875 scic_sds_request_set_status(
876 sci_req,
877 SCU_TASK_DONE_CHECK_RESPONSE,
878 SCI_FAILURE_IO_RESPONSE_VALID);
879 } else
880 scic_sds_request_set_status(
881 sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
882 break;
386 883
387 /* send the request, let the core assign the IO TAG. */ 884 /* only stp device gets suspended. */
388 status = scic_controller_start_io(&isci_host->sci, sci_device, 885 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
389 &request->sci, 886 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR):
390 SCI_CONTROLLER_INVALID_IO_TAG); 887 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR):
391 if (status != SCI_SUCCESS && 888 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR):
392 status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) { 889 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR):
393 dev_warn(&isci_host->pdev->dev, 890 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN):
394 "%s: failed request start (0x%x)\n", 891 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
395 __func__, status); 892 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP):
396 spin_unlock_irqrestore(&isci_host->scic_lock, flags); 893 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS):
397 goto out; 894 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
895 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR):
896 if (sci_req->protocol == SCIC_STP_PROTOCOL) {
897 scic_sds_request_set_status(
898 sci_req,
899 SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
900 SCU_COMPLETION_TL_STATUS_SHIFT,
901 SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
902 } else {
903 scic_sds_request_set_status(
904 sci_req,
905 SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
906 SCU_COMPLETION_TL_STATUS_SHIFT,
907 SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
908 }
909 break;
910
911 /* both stp/ssp device gets suspended */
912 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR):
913 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION):
914 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1):
915 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2):
916 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3):
917 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION):
918 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION):
919 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY):
920 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED):
921 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED):
922 scic_sds_request_set_status(
923 sci_req,
924 SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
925 SCU_COMPLETION_TL_STATUS_SHIFT,
926 SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
927 break;
928
929 /* neither ssp nor stp gets suspended. */
930 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR):
931 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR):
932 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR):
933 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR):
934 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR):
935 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA):
936 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
937 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
938 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
939 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
940 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA):
941 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL):
942 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV):
943 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV):
944 case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND):
945 default:
946 scic_sds_request_set_status(
947 sci_req,
948 SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
949 SCU_COMPLETION_TL_STATUS_SHIFT,
950 SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
951 break;
398 } 952 }
399 953
400 /* Either I/O started OK, or the core has signaled that 954 /*
401 * the device needs a target reset. 955 * TODO: This is probably wrong for ACK/NAK timeout conditions
402 *
403 * In either case, hold onto the I/O for later.
404 *
405 * Update it's status and add it to the list in the
406 * remote device object.
407 */ 956 */
408 isci_request_change_state(request, started);
409 list_add(&request->dev_node, &isci_device->reqs_in_process);
410 957
411 if (status == SCI_SUCCESS) { 958 /* In all cases we will treat this as the completion of the IO req. */
412 /* Save the tag for possible task mgmt later. */ 959 sci_base_state_machine_change_state(
413 request->io_tag = scic_io_request_get_io_tag(&request->sci); 960 &sci_req->state_machine,
961 SCI_BASE_REQUEST_STATE_COMPLETED);
962 return SCI_SUCCESS;
963}
964
965enum sci_status
966scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code)
967{
968 if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED &&
969 request->has_started_substate_machine == false)
970 return scic_sds_request_started_state_tc_completion_handler(request, completion_code);
971 else if (request->state_handlers->tc_completion_handler)
972 return request->state_handlers->tc_completion_handler(request, completion_code);
973
974 dev_warn(scic_to_dev(request->owning_controller),
975 "%s: SCIC IO Request given task completion notification %x "
976 "while in wrong state %d\n",
977 __func__,
978 completion_code,
979 sci_base_state_machine_get_state(&request->state_machine));
980
981 return SCI_FAILURE_INVALID_STATE;
982
983}
984
985/*
986 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
987 * object receives a scic_sds_request_frame_handler() request. This method
988 * first determines the frame type received. If this is a response frame then
989 * the response data is copied to the io request response buffer for processing
990 * at completion time. If the frame type is not a response buffer an error is
991 * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE
992 */
993static enum sci_status
994scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req,
995 u32 frame_index)
996{
997 enum sci_status status;
998 u32 *frame_header;
999 struct ssp_frame_hdr ssp_hdr;
1000 ssize_t word_cnt;
1001
1002 status = scic_sds_unsolicited_frame_control_get_header(
1003 &(scic_sds_request_get_controller(sci_req)->uf_control),
1004 frame_index,
1005 (void **)&frame_header);
1006
1007 word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
1008 sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
1009
1010 if (ssp_hdr.frame_type == SSP_RESPONSE) {
1011 struct ssp_response_iu *resp_iu;
1012 ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
1013
1014 status = scic_sds_unsolicited_frame_control_get_buffer(
1015 &(scic_sds_request_get_controller(sci_req)->uf_control),
1016 frame_index,
1017 (void **)&resp_iu);
1018
1019 sci_swab32_cpy(&sci_req->ssp.rsp,
1020 resp_iu, word_cnt);
1021
1022 resp_iu = &sci_req->ssp.rsp;
1023
1024 if ((resp_iu->datapres == 0x01) ||
1025 (resp_iu->datapres == 0x02)) {
1026 scic_sds_request_set_status(
1027 sci_req,
1028 SCU_TASK_DONE_CHECK_RESPONSE,
1029 SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
1030 } else
1031 scic_sds_request_set_status(
1032 sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
414 } else { 1033 } else {
415 /* The request did not really start in the 1034 /* This was not a response frame why did it get forwarded? */
416 * hardware, so clear the request handle 1035 dev_err(scic_to_dev(sci_req->owning_controller),
417 * here so no terminations will be done. 1036 "%s: SCIC IO Request 0x%p received unexpected "
418 */ 1037 "frame %d type 0x%02x\n",
419 request->terminated = true; 1038 __func__,
1039 sci_req,
1040 frame_index,
1041 ssp_hdr.frame_type);
420 } 1042 }
421 spin_unlock_irqrestore(&isci_host->scic_lock, flags);
422 1043
423 if (status == 1044 /*
424 SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) { 1045 * In any case we are done with this frame buffer return it to the
425 /* Signal libsas that we need the SCSI error 1046 * controller
426 * handler thread to work on this I/O and that 1047 */
427 * we want a device reset. 1048 scic_sds_controller_release_frame(
428 */ 1049 sci_req->owning_controller, frame_index);
429 spin_lock_irqsave(&task->task_state_lock, flags);
430 task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
431 spin_unlock_irqrestore(&task->task_state_lock, flags);
432 1050
433 /* Cause this task to be scheduled in the SCSI error 1051 return SCI_SUCCESS;
434 * handler thread. 1052}
435 */
436 isci_execpath_callback(isci_host, task,
437 sas_task_abort);
438 1053
439 /* Change the status, since we are holding 1054/*
440 * the I/O until it is managed by the SCSI 1055 * *****************************************************************************
441 * error handler. 1056 * * COMPLETED STATE HANDLERS
442 */ 1057 * ***************************************************************************** */
443 status = SCI_SUCCESS; 1058
1059
1060/*
1061 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
1062 * object receives a scic_sds_request_complete() request. This method frees up
1063 * any io request resources that have been allocated and transitions the
1064 * request to its final state. Consider stopping the state machine instead of
1065 * transitioning to the final state? enum sci_status SCI_SUCCESS
1066 */
1067static enum sci_status scic_sds_request_completed_state_complete_handler(
1068 struct scic_sds_request *request)
1069{
1070 if (request->was_tag_assigned_by_user != true) {
1071 scic_controller_free_io_tag(
1072 request->owning_controller, request->io_tag);
444 } 1073 }
445 1074
446 out: 1075 if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) {
447 if (status != SCI_SUCCESS) { 1076 scic_sds_controller_release_frame(
448 /* release dma memory on failure. */ 1077 request->owning_controller, request->saved_rx_frame_index);
449 isci_request_free(isci_host, request);
450 request = NULL;
451 ret = SCI_FAILURE;
452 } 1078 }
453 1079
454 *isci_request = request; 1080 sci_base_state_machine_change_state(&request->state_machine,
455 return ret; 1081 SCI_BASE_REQUEST_STATE_FINAL);
1082 return SCI_SUCCESS;
1083}
1084
1085/*
1086 * *****************************************************************************
1087 * * ABORTING STATE HANDLERS
1088 * ***************************************************************************** */
1089
1090/*
1091 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
1092 * object receives a scic_sds_request_terminate() request. This method is the
1093 * io request aborting state abort handlers. On receipt of a multiple
1094 * terminate requests the io request will transition to the completed state.
1095 * This should not happen in normal operation. enum sci_status SCI_SUCCESS
1096 */
1097static enum sci_status scic_sds_request_aborting_state_abort_handler(
1098 struct scic_sds_request *request)
1099{
1100 sci_base_state_machine_change_state(&request->state_machine,
1101 SCI_BASE_REQUEST_STATE_COMPLETED);
1102 return SCI_SUCCESS;
1103}
1104
1105/*
1106 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
1107 * object receives a scic_sds_request_task_completion() request. This method
1108 * decodes the completion type waiting for the abort task complete
1109 * notification. When the abort task complete is received the io request
1110 * transitions to the completed state. enum sci_status SCI_SUCCESS
1111 */
1112static enum sci_status scic_sds_request_aborting_state_tc_completion_handler(
1113 struct scic_sds_request *sci_req,
1114 u32 completion_code)
1115{
1116 switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
1117 case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT):
1118 case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT):
1119 scic_sds_request_set_status(
1120 sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED
1121 );
1122
1123 sci_base_state_machine_change_state(&sci_req->state_machine,
1124 SCI_BASE_REQUEST_STATE_COMPLETED);
1125 break;
1126
1127 default:
1128 /*
1129 * Unless we get some strange error wait for the task abort to complete
1130 * TODO: Should there be a state change for this completion? */
1131 break;
1132 }
1133
1134 return SCI_SUCCESS;
1135}
1136
1137/*
1138 * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
1139 * object receives a scic_sds_request_frame_handler() request. This method
1140 * discards the unsolicited frame since we are waiting for the abort task
1141 * completion. enum sci_status SCI_SUCCESS
1142 */
1143static enum sci_status scic_sds_request_aborting_state_frame_handler(
1144 struct scic_sds_request *sci_req,
1145 u32 frame_index)
1146{
1147 /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */
1148
1149 scic_sds_controller_release_frame(
1150 sci_req->owning_controller, frame_index);
1151
1152 return SCI_SUCCESS;
456} 1153}
457 1154
1155static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = {
1156 [SCI_BASE_REQUEST_STATE_INITIAL] = {
1157 },
1158 [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
1159 .start_handler = scic_sds_request_constructed_state_start_handler,
1160 .abort_handler = scic_sds_request_constructed_state_abort_handler,
1161 },
1162 [SCI_BASE_REQUEST_STATE_STARTED] = {
1163 .abort_handler = scic_sds_request_started_state_abort_handler,
1164 .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler,
1165 .frame_handler = scic_sds_request_started_state_frame_handler,
1166 },
1167 [SCI_BASE_REQUEST_STATE_COMPLETED] = {
1168 .complete_handler = scic_sds_request_completed_state_complete_handler,
1169 },
1170 [SCI_BASE_REQUEST_STATE_ABORTING] = {
1171 .abort_handler = scic_sds_request_aborting_state_abort_handler,
1172 .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler,
1173 .frame_handler = scic_sds_request_aborting_state_frame_handler,
1174 },
1175 [SCI_BASE_REQUEST_STATE_FINAL] = {
1176 },
1177};
1178
458 1179
459/** 1180/**
460 * isci_request_process_response_iu() - This function sets the status and 1181 * isci_request_process_response_iu() - This function sets the status and
@@ -541,7 +1262,7 @@ static void isci_request_handle_controller_specific_errors(
541{ 1262{
542 unsigned int cstatus; 1263 unsigned int cstatus;
543 1264
544 cstatus = scic_request_get_controller_status(&request->sci); 1265 cstatus = request->sci.scu_status;
545 1266
546 dev_dbg(&request->isci_host->pdev->dev, 1267 dev_dbg(&request->isci_host->pdev->dev,
547 "%s: %p SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR " 1268 "%s: %p SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR "
@@ -833,20 +1554,9 @@ static void isci_task_save_for_upper_layer_completion(
833 } 1554 }
834} 1555}
835 1556
836/** 1557static void isci_request_io_request_complete(struct isci_host *isci_host,
837 * isci_request_io_request_complete() - This function is called by the sci core 1558 struct isci_request *request,
838 * when an io request completes. 1559 enum sci_io_status completion_status)
839 * @isci_host: This parameter specifies the ISCI host object
840 * @request: This parameter is the completed isci_request object.
841 * @completion_status: This parameter specifies the completion status from the
842 * sci core.
843 *
844 * none.
845 */
846void isci_request_io_request_complete(
847 struct isci_host *isci_host,
848 struct isci_request *request,
849 enum sci_io_status completion_status)
850{ 1560{
851 struct sas_task *task = isci_request_access_task(request); 1561 struct sas_task *task = isci_request_access_task(request);
852 struct ssp_response_iu *resp_iu; 1562 struct ssp_response_iu *resp_iu;
@@ -1035,8 +1745,7 @@ void isci_request_io_request_complete(
1035 * There is a possibility that less data than 1745 * There is a possibility that less data than
1036 * the maximum was transferred. 1746 * the maximum was transferred.
1037 */ 1747 */
1038 u32 transferred_length 1748 u32 transferred_length = sci_req_tx_bytes(&request->sci);
1039 = scic_io_request_get_number_of_bytes_transferred(&request->sci);
1040 1749
1041 task->task_status.residual 1750 task->task_status.residual
1042 = task->total_xfer_len - transferred_length; 1751 = task->total_xfer_len - transferred_length;
@@ -1158,3 +1867,680 @@ void isci_request_io_request_complete(
1158 1867
1159 isci_host_can_dequeue(isci_host, 1); 1868 isci_host_can_dequeue(isci_host, 1);
1160} 1869}
1870
1871/**
1872 * scic_sds_request_initial_state_enter() -
1873 * @object: This parameter specifies the base object for which the state
1874 * transition is occurring.
1875 *
1876 * This method implements the actions taken when entering the
1877 * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial
1878 * base request is constructed. Entry into the initial state sets all handlers
1879 * for the io request object to their default handlers. none
1880 */
1881static void scic_sds_request_initial_state_enter(void *object)
1882{
1883 struct scic_sds_request *sci_req = object;
1884
1885 SET_STATE_HANDLER(
1886 sci_req,
1887 scic_sds_request_state_handler_table,
1888 SCI_BASE_REQUEST_STATE_INITIAL
1889 );
1890}
1891
1892/**
1893 * scic_sds_request_constructed_state_enter() -
1894 * @object: The io request object that is to enter the constructed state.
1895 *
1896 * This method implements the actions taken when entering the
1897 * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers
1898 * for the the constructed state. none
1899 */
1900static void scic_sds_request_constructed_state_enter(void *object)
1901{
1902 struct scic_sds_request *sci_req = object;
1903
1904 SET_STATE_HANDLER(
1905 sci_req,
1906 scic_sds_request_state_handler_table,
1907 SCI_BASE_REQUEST_STATE_CONSTRUCTED
1908 );
1909}
1910
1911/**
1912 * scic_sds_request_started_state_enter() -
1913 * @object: This parameter specifies the base object for which the state
1914 * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
1915 *
1916 * This method implements the actions taken when entering the
1917 * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a
1918 * SCSI Task request we must enter the started substate machine. none
1919 */
1920static void scic_sds_request_started_state_enter(void *object)
1921{
1922 struct scic_sds_request *sci_req = object;
1923
1924 SET_STATE_HANDLER(
1925 sci_req,
1926 scic_sds_request_state_handler_table,
1927 SCI_BASE_REQUEST_STATE_STARTED
1928 );
1929
1930 /*
1931 * Most of the request state machines have a started substate machine so
1932 * start its execution on the entry to the started state. */
1933 if (sci_req->has_started_substate_machine == true)
1934 sci_base_state_machine_start(&sci_req->started_substate_machine);
1935}
1936
1937/**
1938 * scic_sds_request_started_state_exit() -
1939 * @object: This parameter specifies the base object for which the state
1940 * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
1941 * object.
1942 *
1943 * This method implements the actions taken when exiting the
1944 * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be
1945 * to stop the started substate machine. none
1946 */
1947static void scic_sds_request_started_state_exit(void *object)
1948{
1949 struct scic_sds_request *sci_req = object;
1950
1951 if (sci_req->has_started_substate_machine == true)
1952 sci_base_state_machine_stop(&sci_req->started_substate_machine);
1953}
1954
1955/**
1956 * scic_sds_request_completed_state_enter() -
1957 * @object: This parameter specifies the base object for which the state
1958 * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
1959 * object.
1960 *
1961 * This method implements the actions taken when entering the
1962 * SCI_BASE_REQUEST_STATE_COMPLETED state. This state is entered when the
1963 * SCIC_SDS_IO_REQUEST has completed. The method will decode the request
1964 * completion status and convert it to an enum sci_status to return in the
1965 * completion callback function. none
1966 */
1967static void scic_sds_request_completed_state_enter(void *object)
1968{
1969 struct scic_sds_request *sci_req = object;
1970 struct scic_sds_controller *scic =
1971 scic_sds_request_get_controller(sci_req);
1972 struct isci_host *ihost = scic_to_ihost(scic);
1973 struct isci_request *ireq = sci_req_to_ireq(sci_req);
1974
1975 SET_STATE_HANDLER(sci_req,
1976 scic_sds_request_state_handler_table,
1977 SCI_BASE_REQUEST_STATE_COMPLETED);
1978
1979 /* Tell the SCI_USER that the IO request is complete */
1980 if (sci_req->is_task_management_request == false)
1981 isci_request_io_request_complete(ihost, ireq,
1982 sci_req->sci_status);
1983 else
1984 isci_task_request_complete(ihost, ireq, sci_req->sci_status);
1985}
1986
1987/**
1988 * scic_sds_request_aborting_state_enter() -
1989 * @object: This parameter specifies the base object for which the state
1990 * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
1991 * object.
1992 *
1993 * This method implements the actions taken when entering the
1994 * SCI_BASE_REQUEST_STATE_ABORTING state. none
1995 */
1996static void scic_sds_request_aborting_state_enter(void *object)
1997{
1998 struct scic_sds_request *sci_req = object;
1999
2000 /* Setting the abort bit in the Task Context is required by the silicon. */
2001 sci_req->task_context_buffer->abort = 1;
2002
2003 SET_STATE_HANDLER(
2004 sci_req,
2005 scic_sds_request_state_handler_table,
2006 SCI_BASE_REQUEST_STATE_ABORTING
2007 );
2008}
2009
2010/**
2011 * scic_sds_request_final_state_enter() -
2012 * @object: This parameter specifies the base object for which the state
2013 * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
2014 *
2015 * This method implements the actions taken when entering the
2016 * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the
2017 * state handlers in place. none
2018 */
2019static void scic_sds_request_final_state_enter(void *object)
2020{
2021 struct scic_sds_request *sci_req = object;
2022
2023 SET_STATE_HANDLER(
2024 sci_req,
2025 scic_sds_request_state_handler_table,
2026 SCI_BASE_REQUEST_STATE_FINAL
2027 );
2028}
2029
2030static const struct sci_base_state scic_sds_request_state_table[] = {
2031 [SCI_BASE_REQUEST_STATE_INITIAL] = {
2032 .enter_state = scic_sds_request_initial_state_enter,
2033 },
2034 [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
2035 .enter_state = scic_sds_request_constructed_state_enter,
2036 },
2037 [SCI_BASE_REQUEST_STATE_STARTED] = {
2038 .enter_state = scic_sds_request_started_state_enter,
2039 .exit_state = scic_sds_request_started_state_exit
2040 },
2041 [SCI_BASE_REQUEST_STATE_COMPLETED] = {
2042 .enter_state = scic_sds_request_completed_state_enter,
2043 },
2044 [SCI_BASE_REQUEST_STATE_ABORTING] = {
2045 .enter_state = scic_sds_request_aborting_state_enter,
2046 },
2047 [SCI_BASE_REQUEST_STATE_FINAL] = {
2048 .enter_state = scic_sds_request_final_state_enter,
2049 },
2050};
2051
2052static void scic_sds_general_request_construct(struct scic_sds_controller *scic,
2053 struct scic_sds_remote_device *sci_dev,
2054 u16 io_tag, struct scic_sds_request *sci_req)
2055{
2056 sci_base_state_machine_construct(&sci_req->state_machine, sci_req,
2057 scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL);
2058 sci_base_state_machine_start(&sci_req->state_machine);
2059
2060 sci_req->io_tag = io_tag;
2061 sci_req->owning_controller = scic;
2062 sci_req->target_device = sci_dev;
2063 sci_req->has_started_substate_machine = false;
2064 sci_req->protocol = SCIC_NO_PROTOCOL;
2065 sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX;
2066 sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev);
2067
2068 sci_req->sci_status = SCI_SUCCESS;
2069 sci_req->scu_status = 0;
2070 sci_req->post_context = 0xFFFFFFFF;
2071
2072 sci_req->is_task_management_request = false;
2073
2074 if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
2075 sci_req->was_tag_assigned_by_user = false;
2076 sci_req->task_context_buffer = NULL;
2077 } else {
2078 sci_req->was_tag_assigned_by_user = true;
2079
2080 sci_req->task_context_buffer =
2081 scic_sds_controller_get_task_context_buffer(scic, io_tag);
2082 }
2083}
2084
2085static enum sci_status
2086scic_io_request_construct(struct scic_sds_controller *scic,
2087 struct scic_sds_remote_device *sci_dev,
2088 u16 io_tag, struct scic_sds_request *sci_req)
2089{
2090 struct domain_device *dev = sci_dev_to_domain(sci_dev);
2091 enum sci_status status = SCI_SUCCESS;
2092
2093 /* Build the common part of the request */
2094 scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
2095
2096 if (sci_dev->rnc.remote_node_index ==
2097 SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
2098 return SCI_FAILURE_INVALID_REMOTE_DEVICE;
2099
2100 if (dev->dev_type == SAS_END_DEV)
2101 scic_sds_ssp_io_request_assign_buffers(sci_req);
2102 else if ((dev->dev_type == SATA_DEV) ||
2103 (dev->tproto & SAS_PROTOCOL_STP)) {
2104 scic_sds_stp_request_assign_buffers(sci_req);
2105 memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd));
2106 } else if (dev_is_expander(dev)) {
2107 scic_sds_smp_request_assign_buffers(sci_req);
2108 memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd));
2109 } else
2110 status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
2111
2112 if (status == SCI_SUCCESS) {
2113 memset(sci_req->task_context_buffer, 0,
2114 offsetof(struct scu_task_context, sgl_pair_ab));
2115 }
2116
2117 return status;
2118}
2119
2120enum sci_status scic_task_request_construct(struct scic_sds_controller *scic,
2121 struct scic_sds_remote_device *sci_dev,
2122 u16 io_tag, struct scic_sds_request *sci_req)
2123{
2124 struct domain_device *dev = sci_dev_to_domain(sci_dev);
2125 enum sci_status status = SCI_SUCCESS;
2126
2127 /* Build the common part of the request */
2128 scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
2129
2130 if (dev->dev_type == SAS_END_DEV) {
2131 scic_sds_ssp_task_request_assign_buffers(sci_req);
2132
2133 sci_req->has_started_substate_machine = true;
2134
2135 /* Construct the started sub-state machine. */
2136 sci_base_state_machine_construct(
2137 &sci_req->started_substate_machine,
2138 sci_req,
2139 scic_sds_io_request_started_task_mgmt_substate_table,
2140 SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
2141 );
2142 } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))
2143 scic_sds_stp_request_assign_buffers(sci_req);
2144 else
2145 status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
2146
2147 if (status == SCI_SUCCESS) {
2148 sci_req->is_task_management_request = true;
2149 memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context));
2150 }
2151
2152 return status;
2153}
2154
2155static enum sci_status isci_request_ssp_request_construct(
2156 struct isci_request *request)
2157{
2158 enum sci_status status;
2159
2160 dev_dbg(&request->isci_host->pdev->dev,
2161 "%s: request = %p\n",
2162 __func__,
2163 request);
2164 status = scic_io_request_construct_basic_ssp(&request->sci);
2165 return status;
2166}
2167
2168static enum sci_status isci_request_stp_request_construct(
2169 struct isci_request *request)
2170{
2171 struct sas_task *task = isci_request_access_task(request);
2172 enum sci_status status;
2173 struct host_to_dev_fis *register_fis;
2174
2175 dev_dbg(&request->isci_host->pdev->dev,
2176 "%s: request = %p\n",
2177 __func__,
2178 request);
2179
2180 /* Get the host_to_dev_fis from the core and copy
2181 * the fis from the task into it.
2182 */
2183 register_fis = isci_sata_task_to_fis_copy(task);
2184
2185 status = scic_io_request_construct_basic_sata(&request->sci);
2186
2187 /* Set the ncq tag in the fis, from the queue
2188 * command in the task.
2189 */
2190 if (isci_sata_is_task_ncq(task)) {
2191
2192 isci_sata_set_ncq_tag(
2193 register_fis,
2194 task
2195 );
2196 }
2197
2198 return status;
2199}
2200
2201/*
2202 * isci_smp_request_build() - This function builds the smp request.
2203 * @ireq: This parameter points to the isci_request allocated in the
2204 * request construct function.
2205 *
2206 * SCI_SUCCESS on successfull completion, or specific failure code.
2207 */
2208static enum sci_status isci_smp_request_build(struct isci_request *ireq)
2209{
2210 enum sci_status status = SCI_FAILURE;
2211 struct sas_task *task = isci_request_access_task(ireq);
2212 struct scic_sds_request *sci_req = &ireq->sci;
2213
2214 dev_dbg(&ireq->isci_host->pdev->dev,
2215 "%s: request = %p\n", __func__, ireq);
2216
2217 dev_dbg(&ireq->isci_host->pdev->dev,
2218 "%s: smp_req len = %d\n",
2219 __func__,
2220 task->smp_task.smp_req.length);
2221
2222 /* copy the smp_command to the address; */
2223 sg_copy_to_buffer(&task->smp_task.smp_req, 1,
2224 &sci_req->smp.cmd,
2225 sizeof(struct smp_req));
2226
2227 status = scic_io_request_construct_smp(sci_req);
2228 if (status != SCI_SUCCESS)
2229 dev_warn(&ireq->isci_host->pdev->dev,
2230 "%s: failed with status = %d\n",
2231 __func__,
2232 status);
2233
2234 return status;
2235}
2236
2237/**
2238 * isci_io_request_build() - This function builds the io request object.
2239 * @isci_host: This parameter specifies the ISCI host object
2240 * @request: This parameter points to the isci_request object allocated in the
2241 * request construct function.
2242 * @sci_device: This parameter is the handle for the sci core's remote device
2243 * object that is the destination for this request.
2244 *
2245 * SCI_SUCCESS on successfull completion, or specific failure code.
2246 */
2247static enum sci_status isci_io_request_build(
2248 struct isci_host *isci_host,
2249 struct isci_request *request,
2250 struct isci_remote_device *isci_device)
2251{
2252 enum sci_status status = SCI_SUCCESS;
2253 struct sas_task *task = isci_request_access_task(request);
2254 struct scic_sds_remote_device *sci_device = &isci_device->sci;
2255
2256 dev_dbg(&isci_host->pdev->dev,
2257 "%s: isci_device = 0x%p; request = %p, "
2258 "num_scatter = %d\n",
2259 __func__,
2260 isci_device,
2261 request,
2262 task->num_scatter);
2263
2264 /* map the sgl addresses, if present.
2265 * libata does the mapping for sata devices
2266 * before we get the request.
2267 */
2268 if (task->num_scatter &&
2269 !sas_protocol_ata(task->task_proto) &&
2270 !(SAS_PROTOCOL_SMP & task->task_proto)) {
2271
2272 request->num_sg_entries = dma_map_sg(
2273 &isci_host->pdev->dev,
2274 task->scatter,
2275 task->num_scatter,
2276 task->data_dir
2277 );
2278
2279 if (request->num_sg_entries == 0)
2280 return SCI_FAILURE_INSUFFICIENT_RESOURCES;
2281 }
2282
2283 /* build the common request object. For now,
2284 * we will let the core allocate the IO tag.
2285 */
2286 status = scic_io_request_construct(&isci_host->sci, sci_device,
2287 SCI_CONTROLLER_INVALID_IO_TAG,
2288 &request->sci);
2289
2290 if (status != SCI_SUCCESS) {
2291 dev_warn(&isci_host->pdev->dev,
2292 "%s: failed request construct\n",
2293 __func__);
2294 return SCI_FAILURE;
2295 }
2296
2297 switch (task->task_proto) {
2298 case SAS_PROTOCOL_SMP:
2299 status = isci_smp_request_build(request);
2300 break;
2301 case SAS_PROTOCOL_SSP:
2302 status = isci_request_ssp_request_construct(request);
2303 break;
2304 case SAS_PROTOCOL_SATA:
2305 case SAS_PROTOCOL_STP:
2306 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
2307 status = isci_request_stp_request_construct(request);
2308 break;
2309 default:
2310 dev_warn(&isci_host->pdev->dev,
2311 "%s: unknown protocol\n", __func__);
2312 return SCI_FAILURE;
2313 }
2314
2315 return SCI_SUCCESS;
2316}
2317
2318/**
2319 * isci_request_alloc_core() - This function gets the request object from the
2320 * isci_host dma cache.
2321 * @isci_host: This parameter specifies the ISCI host object
2322 * @isci_request: This parameter will contain the pointer to the new
2323 * isci_request object.
2324 * @isci_device: This parameter is the pointer to the isci remote device object
2325 * that is the destination for this request.
2326 * @gfp_flags: This parameter specifies the os allocation flags.
2327 *
2328 * SCI_SUCCESS on successfull completion, or specific failure code.
2329 */
2330static int isci_request_alloc_core(
2331 struct isci_host *isci_host,
2332 struct isci_request **isci_request,
2333 struct isci_remote_device *isci_device,
2334 gfp_t gfp_flags)
2335{
2336 int ret = 0;
2337 dma_addr_t handle;
2338 struct isci_request *request;
2339
2340
2341 /* get pointer to dma memory. This actually points
2342 * to both the isci_remote_device object and the
2343 * sci object. The isci object is at the beginning
2344 * of the memory allocated here.
2345 */
2346 request = dma_pool_alloc(isci_host->dma_pool, gfp_flags, &handle);
2347 if (!request) {
2348 dev_warn(&isci_host->pdev->dev,
2349 "%s: dma_pool_alloc returned NULL\n", __func__);
2350 return -ENOMEM;
2351 }
2352
2353 /* initialize the request object. */
2354 spin_lock_init(&request->state_lock);
2355 request->request_daddr = handle;
2356 request->isci_host = isci_host;
2357 request->isci_device = isci_device;
2358 request->io_request_completion = NULL;
2359 request->terminated = false;
2360
2361 request->num_sg_entries = 0;
2362
2363 request->complete_in_target = false;
2364
2365 INIT_LIST_HEAD(&request->completed_node);
2366 INIT_LIST_HEAD(&request->dev_node);
2367
2368 *isci_request = request;
2369 isci_request_change_state(request, allocated);
2370
2371 return ret;
2372}
2373
2374static int isci_request_alloc_io(
2375 struct isci_host *isci_host,
2376 struct sas_task *task,
2377 struct isci_request **isci_request,
2378 struct isci_remote_device *isci_device,
2379 gfp_t gfp_flags)
2380{
2381 int retval = isci_request_alloc_core(isci_host, isci_request,
2382 isci_device, gfp_flags);
2383
2384 if (!retval) {
2385 (*isci_request)->ttype_ptr.io_task_ptr = task;
2386 (*isci_request)->ttype = io_task;
2387
2388 task->lldd_task = *isci_request;
2389 }
2390 return retval;
2391}
2392
2393/**
2394 * isci_request_alloc_tmf() - This function gets the request object from the
2395 * isci_host dma cache and initializes the relevant fields as a sas_task.
2396 * @isci_host: This parameter specifies the ISCI host object
2397 * @sas_task: This parameter is the task struct from the upper layer driver.
2398 * @isci_request: This parameter will contain the pointer to the new
2399 * isci_request object.
2400 * @isci_device: This parameter is the pointer to the isci remote device object
2401 * that is the destination for this request.
2402 * @gfp_flags: This parameter specifies the os allocation flags.
2403 *
2404 * SCI_SUCCESS on successfull completion, or specific failure code.
2405 */
2406int isci_request_alloc_tmf(
2407 struct isci_host *isci_host,
2408 struct isci_tmf *isci_tmf,
2409 struct isci_request **isci_request,
2410 struct isci_remote_device *isci_device,
2411 gfp_t gfp_flags)
2412{
2413 int retval = isci_request_alloc_core(isci_host, isci_request,
2414 isci_device, gfp_flags);
2415
2416 if (!retval) {
2417
2418 (*isci_request)->ttype_ptr.tmf_task_ptr = isci_tmf;
2419 (*isci_request)->ttype = tmf_task;
2420 }
2421 return retval;
2422}
2423
2424/**
2425 * isci_request_execute() - This function allocates the isci_request object,
2426 * all fills in some common fields.
2427 * @isci_host: This parameter specifies the ISCI host object
2428 * @sas_task: This parameter is the task struct from the upper layer driver.
2429 * @isci_request: This parameter will contain the pointer to the new
2430 * isci_request object.
2431 * @gfp_flags: This parameter specifies the os allocation flags.
2432 *
2433 * SCI_SUCCESS on successfull completion, or specific failure code.
2434 */
2435int isci_request_execute(
2436 struct isci_host *isci_host,
2437 struct sas_task *task,
2438 struct isci_request **isci_request,
2439 gfp_t gfp_flags)
2440{
2441 int ret = 0;
2442 struct scic_sds_remote_device *sci_device;
2443 enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
2444 struct isci_remote_device *isci_device;
2445 struct isci_request *request;
2446 unsigned long flags;
2447
2448 isci_device = task->dev->lldd_dev;
2449 sci_device = &isci_device->sci;
2450
2451 /* do common allocation and init of request object. */
2452 ret = isci_request_alloc_io(
2453 isci_host,
2454 task,
2455 &request,
2456 isci_device,
2457 gfp_flags
2458 );
2459
2460 if (ret)
2461 goto out;
2462
2463 status = isci_io_request_build(isci_host, request, isci_device);
2464 if (status != SCI_SUCCESS) {
2465 dev_warn(&isci_host->pdev->dev,
2466 "%s: request_construct failed - status = 0x%x\n",
2467 __func__,
2468 status);
2469 goto out;
2470 }
2471
2472 spin_lock_irqsave(&isci_host->scic_lock, flags);
2473
2474 /* send the request, let the core assign the IO TAG. */
2475 status = scic_controller_start_io(&isci_host->sci, sci_device,
2476 &request->sci,
2477 SCI_CONTROLLER_INVALID_IO_TAG);
2478 if (status != SCI_SUCCESS &&
2479 status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
2480 dev_warn(&isci_host->pdev->dev,
2481 "%s: failed request start (0x%x)\n",
2482 __func__, status);
2483 spin_unlock_irqrestore(&isci_host->scic_lock, flags);
2484 goto out;
2485 }
2486
2487 /* Either I/O started OK, or the core has signaled that
2488 * the device needs a target reset.
2489 *
2490 * In either case, hold onto the I/O for later.
2491 *
2492 * Update it's status and add it to the list in the
2493 * remote device object.
2494 */
2495 isci_request_change_state(request, started);
2496 list_add(&request->dev_node, &isci_device->reqs_in_process);
2497
2498 if (status == SCI_SUCCESS) {
2499 /* Save the tag for possible task mgmt later. */
2500 request->io_tag = request->sci.io_tag;
2501 } else {
2502 /* The request did not really start in the
2503 * hardware, so clear the request handle
2504 * here so no terminations will be done.
2505 */
2506 request->terminated = true;
2507 }
2508 spin_unlock_irqrestore(&isci_host->scic_lock, flags);
2509
2510 if (status ==
2511 SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
2512 /* Signal libsas that we need the SCSI error
2513 * handler thread to work on this I/O and that
2514 * we want a device reset.
2515 */
2516 spin_lock_irqsave(&task->task_state_lock, flags);
2517 task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
2518 spin_unlock_irqrestore(&task->task_state_lock, flags);
2519
2520 /* Cause this task to be scheduled in the SCSI error
2521 * handler thread.
2522 */
2523 isci_execpath_callback(isci_host, task,
2524 sas_task_abort);
2525
2526 /* Change the status, since we are holding
2527 * the I/O until it is managed by the SCSI
2528 * error handler.
2529 */
2530 status = SCI_SUCCESS;
2531 }
2532
2533 out:
2534 if (status != SCI_SUCCESS) {
2535 /* release dma memory on failure. */
2536 isci_request_free(isci_host, request);
2537 request = NULL;
2538 ret = SCI_FAILURE;
2539 }
2540
2541 *isci_request = request;
2542 return ret;
2543}
2544
2545
2546
diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h
index 06786ece9bb2..932ea767c8c2 100644
--- a/drivers/scsi/isci/request.h
+++ b/drivers/scsi/isci/request.h
@@ -58,7 +58,8 @@
58 58
59#include "isci.h" 59#include "isci.h"
60#include "host.h" 60#include "host.h"
61#include "scic_sds_request.h" 61#include "scu_task_context.h"
62#include "stp_request.h"
62 63
63/** 64/**
64 * struct isci_request_status - This enum defines the possible states of an I/O 65 * struct isci_request_status - This enum defines the possible states of an I/O
@@ -82,6 +83,151 @@ enum task_type {
82 tmf_task = 1 83 tmf_task = 1
83}; 84};
84 85
86enum sci_request_protocol {
87 SCIC_NO_PROTOCOL,
88 SCIC_SMP_PROTOCOL,
89 SCIC_SSP_PROTOCOL,
90 SCIC_STP_PROTOCOL
91}; /* XXX remove me, use sas_task.dev instead */;
92
93struct scic_sds_request {
94 /**
95 * This field contains the information for the base request state machine.
96 */
97 struct sci_base_state_machine state_machine;
98
99 /**
100 * This field simply points to the controller to which this IO request
101 * is associated.
102 */
103 struct scic_sds_controller *owning_controller;
104
105 /**
106 * This field simply points to the remote device to which this IO request
107 * is associated.
108 */
109 struct scic_sds_remote_device *target_device;
110
111 /**
112 * This field is utilized to determine if the SCI user is managing
113 * the IO tag for this request or if the core is managing it.
114 */
115 bool was_tag_assigned_by_user;
116
117 /**
118 * This field indicates the IO tag for this request. The IO tag is
119 * comprised of the task_index and a sequence count. The sequence count
120 * is utilized to help identify tasks from one life to another.
121 */
122 u16 io_tag;
123
124 /**
125 * This field specifies the protocol being utilized for this
126 * IO request.
127 */
128 enum sci_request_protocol protocol;
129
130 /**
131 * This field indicates the completion status taken from the SCUs
132 * completion code. It indicates the completion result for the SCU hardware.
133 */
134 u32 scu_status;
135
136 /**
137 * This field indicates the completion status returned to the SCI user. It
138 * indicates the users view of the io request completion.
139 */
140 u32 sci_status;
141
142 /**
143 * This field contains the value to be utilized when posting (e.g. Post_TC,
144 * Post_TC_Abort) this request to the silicon.
145 */
146 u32 post_context;
147
148 struct scu_task_context *task_context_buffer;
149 struct scu_task_context tc ____cacheline_aligned;
150
151 /* could be larger with sg chaining */
152 #define SCU_SGL_SIZE ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2)
153 struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));
154
155 /**
156 * This field indicates if this request is a task management request or
157 * normal IO request.
158 */
159 bool is_task_management_request;
160
161 /**
162 * This field indicates that this request contains an initialized started
163 * substate machine.
164 */
165 bool has_started_substate_machine;
166
167 /**
168 * This field is a pointer to the stored rx frame data. It is used in STP
169 * internal requests and SMP response frames. If this field is non-NULL the
170 * saved frame must be released on IO request completion.
171 *
172 * @todo In the future do we want to keep a list of RX frame buffers?
173 */
174 u32 saved_rx_frame_index;
175
176 /**
177 * This field specifies the data necessary to manage the sub-state
178 * machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state.
179 */
180 struct sci_base_state_machine started_substate_machine;
181
182 /**
183 * This field specifies the current state handlers in place for this
184 * IO Request object. This field is updated each time the request
185 * changes state.
186 */
187 const struct scic_sds_io_request_state_handler *state_handlers;
188
189 /**
190 * This field in the recorded device sequence for the io request. This is
191 * recorded during the build operation and is compared in the start
192 * operation. If the sequence is different then there was a change of
193 * devices from the build to start operations.
194 */
195 u8 device_sequence;
196
197 union {
198 struct {
199 union {
200 struct ssp_cmd_iu cmd;
201 struct ssp_task_iu tmf;
202 };
203 union {
204 struct ssp_response_iu rsp;
205 u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
206 };
207 } ssp;
208
209 struct {
210 struct smp_req cmd;
211 struct smp_resp rsp;
212 } smp;
213
214 struct {
215 struct scic_sds_stp_request req;
216 struct host_to_dev_fis cmd;
217 struct dev_to_host_fis rsp;
218 } stp;
219 };
220
221};
222
223static inline struct scic_sds_request *to_sci_req(struct scic_sds_stp_request *stp_req)
224{
225 struct scic_sds_request *sci_req;
226
227 sci_req = container_of(stp_req, typeof(*sci_req), stp.req);
228 return sci_req;
229}
230
85struct isci_request { 231struct isci_request {
86 enum isci_request_status status; 232 enum isci_request_status status;
87 enum task_type ttype; 233 enum task_type ttype;
@@ -126,6 +272,273 @@ static inline struct isci_request *sci_req_to_ireq(struct scic_sds_request *sci_
126} 272}
127 273
128/** 274/**
275 * enum sci_base_request_states - This enumeration depicts all the states for
276 * the common request state machine.
277 *
278 *
279 */
280enum sci_base_request_states {
281 /**
282 * Simply the initial state for the base request state machine.
283 */
284 SCI_BASE_REQUEST_STATE_INITIAL,
285
286 /**
287 * This state indicates that the request has been constructed. This state
288 * is entered from the INITIAL state.
289 */
290 SCI_BASE_REQUEST_STATE_CONSTRUCTED,
291
292 /**
293 * This state indicates that the request has been started. This state is
294 * entered from the CONSTRUCTED state.
295 */
296 SCI_BASE_REQUEST_STATE_STARTED,
297
298 /**
299 * This state indicates that the request has completed.
300 * This state is entered from the STARTED state. This state is entered from
301 * the ABORTING state.
302 */
303 SCI_BASE_REQUEST_STATE_COMPLETED,
304
305 /**
306 * This state indicates that the request is in the process of being
307 * terminated/aborted.
308 * This state is entered from the CONSTRUCTED state.
309 * This state is entered from the STARTED state.
310 */
311 SCI_BASE_REQUEST_STATE_ABORTING,
312
313 /**
314 * Simply the final state for the base request state machine.
315 */
316 SCI_BASE_REQUEST_STATE_FINAL,
317};
318
319typedef enum sci_status (*scic_sds_io_request_handler_t)
320 (struct scic_sds_request *request);
321typedef enum sci_status (*scic_sds_io_request_frame_handler_t)
322 (struct scic_sds_request *req, u32 frame);
323typedef enum sci_status (*scic_sds_io_request_event_handler_t)
324 (struct scic_sds_request *req, u32 event);
325typedef enum sci_status (*scic_sds_io_request_task_completion_handler_t)
326 (struct scic_sds_request *req, u32 completion_code);
327
328/**
329 * struct scic_sds_io_request_state_handler - This is the SDS core definition
330 * of the state handlers.
331 *
332 *
333 */
334struct scic_sds_io_request_state_handler {
335 /**
336 * The start_handler specifies the method invoked when a user attempts to
337 * start a request.
338 */
339 scic_sds_io_request_handler_t start_handler;
340
341 /**
342 * The abort_handler specifies the method invoked when a user attempts to
343 * abort a request.
344 */
345 scic_sds_io_request_handler_t abort_handler;
346
347 /**
348 * The complete_handler specifies the method invoked when a user attempts to
349 * complete a request.
350 */
351 scic_sds_io_request_handler_t complete_handler;
352
353 scic_sds_io_request_task_completion_handler_t tc_completion_handler;
354 scic_sds_io_request_event_handler_t event_handler;
355 scic_sds_io_request_frame_handler_t frame_handler;
356
357};
358
359extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[];
360
361/**
362 * scic_sds_request_get_controller() -
363 *
364 * This macro will return the controller for this io request object
365 */
366#define scic_sds_request_get_controller(sci_req) \
367 ((sci_req)->owning_controller)
368
369/**
370 * scic_sds_request_get_device() -
371 *
372 * This macro will return the device for this io request object
373 */
374#define scic_sds_request_get_device(sci_req) \
375 ((sci_req)->target_device)
376
377/**
378 * scic_sds_request_get_port() -
379 *
380 * This macro will return the port for this io request object
381 */
382#define scic_sds_request_get_port(sci_req) \
383 scic_sds_remote_device_get_port(scic_sds_request_get_device(sci_req))
384
385/**
386 * scic_sds_request_get_post_context() -
387 *
388 * This macro returns the constructed post context result for the io request.
389 */
390#define scic_sds_request_get_post_context(sci_req) \
391 ((sci_req)->post_context)
392
393/**
394 * scic_sds_request_get_task_context() -
395 *
396 * This is a helper macro to return the os handle for this request object.
397 */
398#define scic_sds_request_get_task_context(request) \
399 ((request)->task_context_buffer)
400
401/**
402 * scic_sds_request_set_status() -
403 *
404 * This macro will set the scu hardware status and sci request completion
405 * status for an io request.
406 */
407#define scic_sds_request_set_status(request, scu_status_code, sci_status_code) \
408 { \
409 (request)->scu_status = (scu_status_code); \
410 (request)->sci_status = (sci_status_code); \
411 }
412
413#define scic_sds_request_complete(a_request) \
414 ((a_request)->state_handlers->complete_handler(a_request))
415
416
417extern enum sci_status
418scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code);
419
420/**
421 * SCU_SGL_ZERO() -
422 *
423 * This macro zeros the hardware SGL element data
424 */
425#define SCU_SGL_ZERO(scu_sge) \
426 { \
427 (scu_sge).length = 0; \
428 (scu_sge).address_lower = 0; \
429 (scu_sge).address_upper = 0; \
430 (scu_sge).address_modifier = 0; \
431 }
432
433/**
434 * SCU_SGL_COPY() -
435 *
436 * This macro copys the SGL Element data from the host os to the hardware SGL
437 * elment data
438 */
439#define SCU_SGL_COPY(scu_sge, os_sge) \
440 { \
441 (scu_sge).length = sg_dma_len(sg); \
442 (scu_sge).address_upper = \
443 upper_32_bits(sg_dma_address(sg)); \
444 (scu_sge).address_lower = \
445 lower_32_bits(sg_dma_address(sg)); \
446 (scu_sge).address_modifier = 0; \
447 }
448
449void scic_sds_request_build_sgl(struct scic_sds_request *sci_req);
450void scic_sds_stp_request_assign_buffers(struct scic_sds_request *sci_req);
451void scic_sds_smp_request_assign_buffers(struct scic_sds_request *sci_req);
452enum sci_status scic_sds_request_start(struct scic_sds_request *sci_req);
453enum sci_status scic_sds_io_request_terminate(struct scic_sds_request *sci_req);
454void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req);
455enum sci_status scic_sds_io_request_event_handler(struct scic_sds_request *sci_req,
456 u32 event_code);
457enum sci_status scic_sds_io_request_frame_handler(struct scic_sds_request *sci_req,
458 u32 frame_index);
459enum sci_status scic_sds_task_request_terminate(struct scic_sds_request *sci_req);
460enum sci_status scic_sds_request_started_state_abort_handler(struct scic_sds_request *sci_req);
461
462/**
463 * enum _scic_sds_io_request_started_task_mgmt_substates - This enumeration
464 * depicts all of the substates for a task management request to be
465 * performed in the STARTED super-state.
466 *
467 *
468 */
469enum scic_sds_raw_request_started_task_mgmt_substates {
470 /**
471 * The AWAIT_TC_COMPLETION sub-state indicates that the started raw
472 * task management request is waiting for the transmission of the
473 * initial frame (i.e. command, task, etc.).
474 */
475 SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION,
476
477 /**
478 * This sub-state indicates that the started task management request
479 * is waiting for the reception of an unsolicited frame
480 * (i.e. response IU).
481 */
482 SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE,
483};
484
485
486/**
487 * enum _scic_sds_smp_request_started_substates - This enumeration depicts all
488 * of the substates for a SMP request to be performed in the STARTED
489 * super-state.
490 *
491 *
492 */
493enum scic_sds_smp_request_started_substates {
494 /**
495 * This sub-state indicates that the started task management request
496 * is waiting for the reception of an unsolicited frame
497 * (i.e. response IU).
498 */
499 SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE,
500
501 /**
502 * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is
503 * waiting for the transmission of the initial frame (i.e. command, task, etc.).
504 */
505 SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION,
506};
507
508
509
510/* XXX open code in caller */
511static inline void *scic_request_get_virt_addr(struct scic_sds_request *sci_req,
512 dma_addr_t phys_addr)
513{
514 struct isci_request *ireq = sci_req_to_ireq(sci_req);
515 dma_addr_t offset;
516
517 BUG_ON(phys_addr < ireq->request_daddr);
518
519 offset = phys_addr - ireq->request_daddr;
520
521 BUG_ON(offset >= sizeof(*ireq));
522
523 return (char *)ireq + offset;
524}
525
526/* XXX open code in caller */
527static inline dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sci_req,
528 void *virt_addr)
529{
530 struct isci_request *ireq = sci_req_to_ireq(sci_req);
531
532 char *requested_addr = (char *)virt_addr;
533 char *base_addr = (char *)ireq;
534
535 BUG_ON(requested_addr < base_addr);
536 BUG_ON((requested_addr - base_addr) >= sizeof(*ireq));
537
538 return ireq->request_daddr + (requested_addr - base_addr);
539}
540
541/**
129 * This function gets the status of the request object. 542 * This function gets the status of the request object.
130 * @request: This parameter points to the isci_request object 543 * @request: This parameter points to the isci_request object
131 * 544 *
@@ -337,12 +750,6 @@ static inline void isci_request_unmap_sgl(
337 } 750 }
338} 751}
339 752
340
341void isci_request_io_request_complete(
342 struct isci_host *isci_host,
343 struct isci_request *request,
344 enum sci_io_status completion_status);
345
346/** 753/**
347 * isci_request_io_request_get_next_sge() - This function is called by the sci 754 * isci_request_io_request_get_next_sge() - This function is called by the sci
348 * core to retrieve the next sge for a given request. 755 * core to retrieve the next sge for a given request.
@@ -385,13 +792,16 @@ static inline void *isci_request_io_request_get_next_sge(
385 return ret; 792 return ret;
386} 793}
387 794
388 795void isci_terminate_pending_requests(struct isci_host *isci_host,
389void isci_terminate_pending_requests( 796 struct isci_remote_device *isci_device,
390 struct isci_host *isci_host, 797 enum isci_request_status new_request_state);
391 struct isci_remote_device *isci_device, 798enum sci_status scic_task_request_construct(struct scic_sds_controller *scic,
392 enum isci_request_status new_request_state); 799 struct scic_sds_remote_device *sci_dev,
393 800 u16 io_tag,
394 801 struct scic_sds_request *sci_req);
395 802enum sci_status scic_task_request_construct_ssp(struct scic_sds_request *sci_req);
396 803enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req);
804enum sci_status scic_io_request_construct_smp(struct scic_sds_request *sci_req);
805void scic_stp_io_request_set_ncq_tag(struct scic_sds_request *sci_req, u16 ncq_tag);
806void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
397#endif /* !defined(_ISCI_REQUEST_H_) */ 807#endif /* !defined(_ISCI_REQUEST_H_) */
diff --git a/drivers/scsi/isci/sata.c b/drivers/scsi/isci/sata.c
index 08dabf08f7d7..b9b9271d4736 100644
--- a/drivers/scsi/isci/sata.c
+++ b/drivers/scsi/isci/sata.c
@@ -56,8 +56,6 @@
56#include <scsi/sas.h> 56#include <scsi/sas.h>
57#include "isci.h" 57#include "isci.h"
58#include "remote_device.h" 58#include "remote_device.h"
59#include "scic_io_request.h"
60#include "scic_task_request.h"
61#include "task.h" 59#include "task.h"
62#include "request.h" 60#include "request.h"
63#include "sata.h" 61#include "sata.h"
diff --git a/drivers/scsi/isci/core/scic_sds_smp_request.c b/drivers/scsi/isci/smp_request.c
index 6a2b65b9cf0f..d4750a761c58 100644
--- a/drivers/scsi/isci/core/scic_sds_smp_request.c
+++ b/drivers/scsi/isci/smp_request.c
@@ -56,9 +56,7 @@
56#include <scsi/sas.h> 56#include <scsi/sas.h>
57#include "state_machine.h" 57#include "state_machine.h"
58#include "remote_device.h" 58#include "remote_device.h"
59#include "scic_sds_request.h" 59#include "request.h"
60#include "scic_sds_smp_request.h"
61#include "sci_util.h"
62#include "scu_completion_codes.h" 60#include "scu_completion_codes.h"
63#include "scu_task_context.h" 61#include "scu_task_context.h"
64#include "host.h" 62#include "host.h"
diff --git a/drivers/scsi/isci/core/scic_sds_ssp_request.c b/drivers/scsi/isci/ssp_request.c
index 3fdf68be7a4d..4b6317aeef7d 100644
--- a/drivers/scsi/isci/core/scic_sds_ssp_request.c
+++ b/drivers/scsi/isci/ssp_request.c
@@ -54,10 +54,10 @@
54 */ 54 */
55 55
56#include "host.h" 56#include "host.h"
57#include "request.h"
57#include "state_machine.h" 58#include "state_machine.h"
58#include "scic_sds_request.h"
59#include "scu_completion_codes.h"
60#include "scu_task_context.h" 59#include "scu_task_context.h"
60#include "scu_completion_codes.h"
61 61
62/** 62/**
63 * This method processes the completions transport layer (TL) status to 63 * This method processes the completions transport layer (TL) status to
diff --git a/drivers/scsi/isci/core/scic_sds_stp_request.c b/drivers/scsi/isci/stp_request.c
index 308f486514e9..298086afa5aa 100644
--- a/drivers/scsi/isci/core/scic_sds_stp_request.c
+++ b/drivers/scsi/isci/stp_request.c
@@ -56,13 +56,9 @@
56#include <scsi/sas.h> 56#include <scsi/sas.h>
57#include "sas.h" 57#include "sas.h"
58#include "state_machine.h" 58#include "state_machine.h"
59#include "scic_io_request.h"
60#include "remote_device.h" 59#include "remote_device.h"
61#include "scic_sds_request.h" 60#include "stp_request.h"
62#include "scic_sds_stp_pio_request.h"
63#include "scic_sds_stp_request.h"
64#include "unsolicited_frame_control.h" 61#include "unsolicited_frame_control.h"
65#include "sci_util.h"
66#include "scu_completion_codes.h" 62#include "scu_completion_codes.h"
67#include "scu_event_codes.h" 63#include "scu_event_codes.h"
68#include "scu_task_context.h" 64#include "scu_task_context.h"
diff --git a/drivers/scsi/isci/core/scic_sds_stp_request.h b/drivers/scsi/isci/stp_request.h
index f5434f12ad06..eb14874ceda3 100644
--- a/drivers/scsi/isci/core/scic_sds_stp_request.h
+++ b/drivers/scsi/isci/stp_request.h
@@ -152,27 +152,44 @@ enum scic_sds_stp_request_started_soft_reset_substates {
152 SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE, 152 SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE,
153}; 153};
154 154
155u32 scic_sds_stp_request_get_object_size(void); 155/* This is the enumeration of the SATA PIO DATA IN started substate machine. */
156 156enum _scic_sds_stp_request_started_pio_substates {
157enum sci_status scic_sds_stp_pio_request_construct( 157 /**
158 struct scic_sds_request *scic_io_request, 158 * While in this state the IO request object is waiting for the TC completion
159 bool copy_rx_frame); 159 * notification for the H2D Register FIS
160 160 */
161enum sci_status scic_sds_stp_udma_request_construct( 161 SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
162 struct scic_sds_request *sci_req, 162
163 u32 transfer_length, 163 /**
164 enum dma_data_direction dir); 164 * While in this state the IO request object is waiting for either a PIO Setup
165 165 * FIS or a D2H register FIS. The type of frame received is based on the
166enum sci_status scic_sds_stp_non_data_request_construct( 166 * result of the prior frame and line conditions.
167 struct scic_sds_request *sci_req); 167 */
168 168 SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
169enum sci_status scic_sds_stp_soft_reset_request_construct( 169
170 struct scic_sds_request *sci_req); 170 /**
171 171 * While in this state the IO request object is waiting for a DATA frame from
172enum sci_status scic_sds_stp_ncq_request_construct( 172 * the device.
173 struct scic_sds_request *sci_req, 173 */
174 u32 transfer_length, 174 SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
175 enum dma_data_direction dir); 175
176 176 /**
177 * While in this state the IO request object is waiting to transmit the next data
178 * frame to the device.
179 */
180 SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
181};
177 182
183struct scic_sds_request;
184
185enum sci_status scic_sds_stp_pio_request_construct(struct scic_sds_request *sci_req,
186 bool copy_rx_frame);
187enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
188 u32 transfer_length,
189 enum dma_data_direction dir);
190enum sci_status scic_sds_stp_non_data_request_construct(struct scic_sds_request *sci_req);
191enum sci_status scic_sds_stp_soft_reset_request_construct(struct scic_sds_request *sci_req);
192enum sci_status scic_sds_stp_ncq_request_construct(struct scic_sds_request *sci_req,
193 u32 transfer_length,
194 enum dma_data_direction dir);
178#endif /* _SCIC_SDS_STP_REQUEST_T_ */ 195#endif /* _SCIC_SDS_STP_REQUEST_T_ */
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index 2a8603881929..078e2ee4f4be 100644
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -56,15 +56,12 @@
56#include <linux/completion.h> 56#include <linux/completion.h>
57#include <linux/irqflags.h> 57#include <linux/irqflags.h>
58#include "sas.h" 58#include "sas.h"
59#include "scic_task_request.h"
60#include "scic_io_request.h"
61#include "remote_device.h" 59#include "remote_device.h"
62#include "remote_node_context.h" 60#include "remote_node_context.h"
63#include "isci.h" 61#include "isci.h"
64#include "request.h" 62#include "request.h"
65#include "sata.h" 63#include "sata.h"
66#include "task.h" 64#include "task.h"
67#include "scic_sds_request.h"
68#include "timers.h" 65#include "timers.h"
69 66
70/** 67/**
diff --git a/drivers/scsi/isci/unsolicited_frame_control.c b/drivers/scsi/isci/unsolicited_frame_control.c
index 8d68dcc52bc1..12e676346386 100644
--- a/drivers/scsi/isci/unsolicited_frame_control.c
+++ b/drivers/scsi/isci/unsolicited_frame_control.c
@@ -56,7 +56,6 @@
56#include "host.h" 56#include "host.h"
57#include "unsolicited_frame_control.h" 57#include "unsolicited_frame_control.h"
58#include "registers.h" 58#include "registers.h"
59#include "sci_util.h"
60 59
61/** 60/**
62 * This method will program the unsolicited frames (UFs) into the UF address 61 * This method will program the unsolicited frames (UFs) into the UF address
@@ -93,10 +92,8 @@ static void scic_sds_unsolicited_frame_control_construct_frames(
93 for (index = 0; index < unused_uf_header_entries; index++) { 92 for (index = 0; index < unused_uf_header_entries; index++) {
94 uf = &uf_control->buffers.array[index]; 93 uf = &uf_control->buffers.array[index];
95 94
96 sci_cb_make_physical_address(
97 uf_control->address_table.array[index], 0, 0
98 );
99 uf->buffer = NULL; 95 uf->buffer = NULL;
96 uf_control->address_table.array[index] = 0;
100 uf->header = &uf_control->headers.array[index]; 97 uf->header = &uf_control->headers.array[index];
101 uf->state = UNSOLICITED_FRAME_EMPTY; 98 uf->state = UNSOLICITED_FRAME_EMPTY;
102 } 99 }
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 01:13:31 -0500