Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 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 | |
Dan Williams | cc9203b | 2011-05-08 17:34:44 -0700 | [diff] [blame] | 56 | #include "host.h" |
Edmund Nadolski | 12ef654 | 2011-06-02 00:10:50 +0000 | [diff] [blame] | 57 | #include "isci.h" |
Dan Williams | 88f3b62 | 2011-04-22 19:18:03 -0700 | [diff] [blame] | 58 | #include "remote_device.h" |
| 59 | #include "remote_node_context.h" |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 60 | #include "scu_event_codes.h" |
| 61 | #include "scu_task_context.h" |
| 62 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 63 | |
| 64 | /** |
| 65 | * |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 66 | * @sci_rnc: The RNC for which the is posted request is being made. |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 67 | * |
| 68 | * This method will return true if the RNC is not in the initial state. In all |
| 69 | * other states the RNC is considered active and this will return true. The |
| 70 | * destroy request of the state machine drives the RNC back to the initial |
| 71 | * state. If the state machine changes then this routine will also have to be |
| 72 | * changed. bool true if the state machine is not in the initial state false if |
| 73 | * the state machine is in the initial state |
| 74 | */ |
| 75 | |
| 76 | /** |
| 77 | * |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 78 | * @sci_rnc: The state of the remote node context object to check. |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 79 | * |
| 80 | * This method will return true if the remote node context is in a READY state |
| 81 | * otherwise it will return false bool true if the remote node context is in |
| 82 | * the ready state. false if the remote node context is not in the ready state. |
| 83 | */ |
| 84 | bool scic_sds_remote_node_context_is_ready( |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 85 | struct scic_sds_remote_node_context *sci_rnc) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 86 | { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 87 | u32 current_state = sci_rnc->sm.current_state_id; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 88 | |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 89 | if (current_state == SCI_RNC_READY) { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 90 | return true; |
| 91 | } |
| 92 | |
| 93 | return false; |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 98 | * @sci_dev: The remote device to use to construct the RNC buffer. |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 99 | * @rnc: The buffer into which the remote device data will be copied. |
| 100 | * |
| 101 | * This method will construct the RNC buffer for this remote device object. none |
| 102 | */ |
Dan Williams | 35173d5 | 2011-03-26 16:43:01 -0700 | [diff] [blame] | 103 | static void scic_sds_remote_node_context_construct_buffer( |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 104 | struct scic_sds_remote_node_context *sci_rnc) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 105 | { |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 106 | struct scic_sds_remote_device *sci_dev = rnc_to_dev(sci_rnc); |
Dan Williams | a1a113b | 2011-04-21 18:44:45 -0700 | [diff] [blame] | 107 | struct domain_device *dev = sci_dev_to_domain(sci_dev); |
Dan Williams | 1f4fa1f | 2011-04-26 11:44:06 -0700 | [diff] [blame] | 108 | int rni = sci_rnc->remote_node_index; |
Dan Williams | a1a113b | 2011-04-21 18:44:45 -0700 | [diff] [blame] | 109 | union scu_remote_node_context *rnc; |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 110 | struct scic_sds_controller *scic; |
Dan Williams | a3d568f0 | 2011-04-26 09:41:52 -0700 | [diff] [blame] | 111 | __le64 sas_addr; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 112 | |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 113 | scic = scic_sds_remote_device_get_controller(sci_dev); |
Dan Williams | 1f4fa1f | 2011-04-26 11:44:06 -0700 | [diff] [blame] | 114 | rnc = scic_sds_controller_get_remote_node_context_buffer(scic, rni); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 115 | |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 116 | memset(rnc, 0, sizeof(union scu_remote_node_context) |
| 117 | * scic_sds_remote_device_node_count(sci_dev)); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 118 | |
Dan Williams | 1f4fa1f | 2011-04-26 11:44:06 -0700 | [diff] [blame] | 119 | rnc->ssp.remote_node_index = rni; |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 120 | rnc->ssp.remote_node_port_width = sci_dev->device_port_width; |
Dan Williams | 1f4fa1f | 2011-04-26 11:44:06 -0700 | [diff] [blame] | 121 | rnc->ssp.logical_port_index = sci_dev->owning_port->physical_port_index; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 122 | |
Dan Williams | a3d568f0 | 2011-04-26 09:41:52 -0700 | [diff] [blame] | 123 | /* sas address is __be64, context ram format is __le64 */ |
| 124 | sas_addr = cpu_to_le64(SAS_ADDR(dev->sas_addr)); |
| 125 | rnc->ssp.remote_sas_address_hi = upper_32_bits(sas_addr); |
| 126 | rnc->ssp.remote_sas_address_lo = lower_32_bits(sas_addr); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 127 | |
| 128 | rnc->ssp.nexus_loss_timer_enable = true; |
| 129 | rnc->ssp.check_bit = false; |
| 130 | rnc->ssp.is_valid = false; |
| 131 | rnc->ssp.is_remote_node_context = true; |
| 132 | rnc->ssp.function_number = 0; |
| 133 | |
| 134 | rnc->ssp.arbitration_wait_time = 0; |
| 135 | |
Dan Williams | a1a113b | 2011-04-21 18:44:45 -0700 | [diff] [blame] | 136 | if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 137 | rnc->ssp.connection_occupancy_timeout = |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 138 | scic->user_parameters.sds1.stp_max_occupancy_timeout; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 139 | rnc->ssp.connection_inactivity_timeout = |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 140 | scic->user_parameters.sds1.stp_inactivity_timeout; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 141 | } else { |
| 142 | rnc->ssp.connection_occupancy_timeout = |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 143 | scic->user_parameters.sds1.ssp_max_occupancy_timeout; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 144 | rnc->ssp.connection_inactivity_timeout = |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 145 | scic->user_parameters.sds1.ssp_inactivity_timeout; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | rnc->ssp.initial_arbitration_wait_time = 0; |
| 149 | |
| 150 | /* Open Address Frame Parameters */ |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 151 | rnc->ssp.oaf_connection_rate = sci_dev->connection_rate; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 152 | rnc->ssp.oaf_features = 0; |
| 153 | rnc->ssp.oaf_source_zone_group = 0; |
| 154 | rnc->ssp.oaf_more_compatibility_features = 0; |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 159 | * @sci_rnc: |
| 160 | * @callback: |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 161 | * @callback_parameter: |
| 162 | * |
| 163 | * This method will setup the remote node context object so it will transition |
| 164 | * to its ready state. If the remote node context is already setup to |
| 165 | * transition to its final state then this function does nothing. none |
| 166 | */ |
| 167 | static void scic_sds_remote_node_context_setup_to_resume( |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 168 | struct scic_sds_remote_node_context *sci_rnc, |
| 169 | scics_sds_remote_node_context_callback callback, |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 170 | void *callback_parameter) |
| 171 | { |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 172 | if (sci_rnc->destination_state != SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL) { |
| 173 | sci_rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY; |
| 174 | sci_rnc->user_callback = callback; |
| 175 | sci_rnc->user_cookie = callback_parameter; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 176 | } |
| 177 | } |
| 178 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 179 | static void scic_sds_remote_node_context_setup_to_destory( |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 180 | struct scic_sds_remote_node_context *sci_rnc, |
| 181 | scics_sds_remote_node_context_callback callback, |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 182 | void *callback_parameter) |
| 183 | { |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 184 | sci_rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL; |
| 185 | sci_rnc->user_callback = callback; |
| 186 | sci_rnc->user_cookie = callback_parameter; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 187 | } |
| 188 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 189 | /** |
| 190 | * |
| 191 | * |
| 192 | * This method just calls the user callback function and then resets the |
| 193 | * callback. |
| 194 | */ |
| 195 | static void scic_sds_remote_node_context_notify_user( |
| 196 | struct scic_sds_remote_node_context *rnc) |
| 197 | { |
| 198 | if (rnc->user_callback != NULL) { |
| 199 | (*rnc->user_callback)(rnc->user_cookie); |
| 200 | |
| 201 | rnc->user_callback = NULL; |
| 202 | rnc->user_cookie = NULL; |
| 203 | } |
| 204 | } |
| 205 | |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 206 | static void scic_sds_remote_node_context_continue_state_transitions(struct scic_sds_remote_node_context *rnc) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 207 | { |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 208 | if (rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY) |
| 209 | scic_sds_remote_node_context_resume(rnc, rnc->user_callback, |
| 210 | rnc->user_cookie); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | /** |
| 214 | * |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 215 | * @sci_rnc: The remote node context object that is to be validated. |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 216 | * |
| 217 | * This method will mark the rnc buffer as being valid and post the request to |
| 218 | * the hardware. none |
| 219 | */ |
| 220 | static void scic_sds_remote_node_context_validate_context_buffer( |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 221 | struct scic_sds_remote_node_context *sci_rnc) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 222 | { |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 223 | struct scic_sds_remote_device *sci_dev = rnc_to_dev(sci_rnc); |
Dan Williams | a1a113b | 2011-04-21 18:44:45 -0700 | [diff] [blame] | 224 | struct domain_device *dev = sci_dev_to_domain(sci_dev); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 225 | union scu_remote_node_context *rnc_buffer; |
| 226 | |
| 227 | rnc_buffer = scic_sds_controller_get_remote_node_context_buffer( |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 228 | scic_sds_remote_device_get_controller(sci_dev), |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 229 | sci_rnc->remote_node_index |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 230 | ); |
| 231 | |
| 232 | rnc_buffer->ssp.is_valid = true; |
| 233 | |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 234 | if (!sci_dev->is_direct_attached && |
Dan Williams | a1a113b | 2011-04-21 18:44:45 -0700 | [diff] [blame] | 235 | (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))) { |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 236 | scic_sds_remote_device_post_request(sci_dev, |
| 237 | SCU_CONTEXT_COMMAND_POST_RNC_96); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 238 | } else { |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 239 | scic_sds_remote_device_post_request(sci_dev, SCU_CONTEXT_COMMAND_POST_RNC_32); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 240 | |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 241 | if (sci_dev->is_direct_attached) { |
| 242 | scic_sds_port_setup_transports(sci_dev->owning_port, |
| 243 | sci_rnc->remote_node_index); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 244 | } |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 250 | * @sci_rnc: The remote node context object that is to be invalidated. |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 251 | * |
| 252 | * This method will update the RNC buffer and post the invalidate request. none |
| 253 | */ |
| 254 | static void scic_sds_remote_node_context_invalidate_context_buffer( |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 255 | struct scic_sds_remote_node_context *sci_rnc) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 256 | { |
| 257 | union scu_remote_node_context *rnc_buffer; |
| 258 | |
| 259 | rnc_buffer = scic_sds_controller_get_remote_node_context_buffer( |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 260 | scic_sds_remote_device_get_controller(rnc_to_dev(sci_rnc)), |
| 261 | sci_rnc->remote_node_index); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 262 | |
| 263 | rnc_buffer->ssp.is_valid = false; |
| 264 | |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 265 | scic_sds_remote_device_post_request(rnc_to_dev(sci_rnc), |
| 266 | SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 267 | } |
| 268 | |
Dan Williams | 9269e0e | 2011-05-12 07:42:17 -0700 | [diff] [blame] | 269 | static void scic_sds_remote_node_context_initial_state_enter(struct sci_base_state_machine *sm) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 270 | { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 271 | struct scic_sds_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 272 | |
Dan Williams | f34d9e5 | 2011-05-12 09:27:52 -0700 | [diff] [blame] | 273 | /* Check to see if we have gotten back to the initial state because |
| 274 | * someone requested to destroy the remote node context object. |
| 275 | */ |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 276 | if (sm->previous_state_id == SCI_RNC_INVALIDATING) { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 277 | rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 278 | scic_sds_remote_node_context_notify_user(rnc); |
| 279 | } |
| 280 | } |
| 281 | |
Dan Williams | 9269e0e | 2011-05-12 07:42:17 -0700 | [diff] [blame] | 282 | static void scic_sds_remote_node_context_posting_state_enter(struct sci_base_state_machine *sm) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 283 | { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 284 | struct scic_sds_remote_node_context *sci_rnc = container_of(sm, typeof(*sci_rnc), sm); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 285 | |
Dave Jiang | e2023b8 | 2011-04-21 05:34:49 +0000 | [diff] [blame] | 286 | scic_sds_remote_node_context_validate_context_buffer(sci_rnc); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 287 | } |
| 288 | |
Dan Williams | 9269e0e | 2011-05-12 07:42:17 -0700 | [diff] [blame] | 289 | static void scic_sds_remote_node_context_invalidating_state_enter(struct sci_base_state_machine *sm) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 290 | { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 291 | struct scic_sds_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 292 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 293 | scic_sds_remote_node_context_invalidate_context_buffer(rnc); |
| 294 | } |
| 295 | |
Dan Williams | 9269e0e | 2011-05-12 07:42:17 -0700 | [diff] [blame] | 296 | static void scic_sds_remote_node_context_resuming_state_enter(struct sci_base_state_machine *sm) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 297 | { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 298 | struct scic_sds_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 299 | struct scic_sds_remote_device *sci_dev; |
Dan Williams | a1a113b | 2011-04-21 18:44:45 -0700 | [diff] [blame] | 300 | struct domain_device *dev; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 301 | |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 302 | sci_dev = rnc_to_dev(rnc); |
Dan Williams | a1a113b | 2011-04-21 18:44:45 -0700 | [diff] [blame] | 303 | dev = sci_dev_to_domain(sci_dev); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 304 | |
Henryk Dembkowski | 2462146 | 2011-02-23 00:08:52 -0800 | [diff] [blame] | 305 | /* |
| 306 | * For direct attached SATA devices we need to clear the TLCR |
| 307 | * NCQ to TCi tag mapping on the phy and in cases where we |
| 308 | * resume because of a target reset we also need to update |
| 309 | * the STPTLDARNI register with the RNi of the device |
| 310 | */ |
Dan Williams | a1a113b | 2011-04-21 18:44:45 -0700 | [diff] [blame] | 311 | if ((dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) && |
| 312 | sci_dev->is_direct_attached) |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 313 | scic_sds_port_setup_transports(sci_dev->owning_port, |
| 314 | rnc->remote_node_index); |
Henryk Dembkowski | 2462146 | 2011-02-23 00:08:52 -0800 | [diff] [blame] | 315 | |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 316 | scic_sds_remote_device_post_request(sci_dev, SCU_CONTEXT_COMMAND_POST_RNC_RESUME); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 317 | } |
| 318 | |
Dan Williams | 9269e0e | 2011-05-12 07:42:17 -0700 | [diff] [blame] | 319 | static void scic_sds_remote_node_context_ready_state_enter(struct sci_base_state_machine *sm) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 320 | { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 321 | struct scic_sds_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 322 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 323 | rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED; |
| 324 | |
Dan Williams | f34d9e5 | 2011-05-12 09:27:52 -0700 | [diff] [blame] | 325 | if (rnc->user_callback) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 326 | scic_sds_remote_node_context_notify_user(rnc); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 327 | } |
| 328 | |
Dan Williams | 9269e0e | 2011-05-12 07:42:17 -0700 | [diff] [blame] | 329 | static void scic_sds_remote_node_context_tx_suspended_state_enter(struct sci_base_state_machine *sm) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 330 | { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 331 | struct scic_sds_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 332 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 333 | scic_sds_remote_node_context_continue_state_transitions(rnc); |
| 334 | } |
| 335 | |
Dan Williams | 9269e0e | 2011-05-12 07:42:17 -0700 | [diff] [blame] | 336 | static void scic_sds_remote_node_context_tx_rx_suspended_state_enter(struct sci_base_state_machine *sm) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 337 | { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 338 | struct scic_sds_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 339 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 340 | scic_sds_remote_node_context_continue_state_transitions(rnc); |
| 341 | } |
| 342 | |
Dan Williams | 35173d5 | 2011-03-26 16:43:01 -0700 | [diff] [blame] | 343 | static const struct sci_base_state scic_sds_remote_node_context_state_table[] = { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 344 | [SCI_RNC_INITIAL] = { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 345 | .enter_state = scic_sds_remote_node_context_initial_state_enter, |
| 346 | }, |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 347 | [SCI_RNC_POSTING] = { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 348 | .enter_state = scic_sds_remote_node_context_posting_state_enter, |
| 349 | }, |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 350 | [SCI_RNC_INVALIDATING] = { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 351 | .enter_state = scic_sds_remote_node_context_invalidating_state_enter, |
| 352 | }, |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 353 | [SCI_RNC_RESUMING] = { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 354 | .enter_state = scic_sds_remote_node_context_resuming_state_enter, |
| 355 | }, |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 356 | [SCI_RNC_READY] = { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 357 | .enter_state = scic_sds_remote_node_context_ready_state_enter, |
| 358 | }, |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 359 | [SCI_RNC_TX_SUSPENDED] = { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 360 | .enter_state = scic_sds_remote_node_context_tx_suspended_state_enter, |
| 361 | }, |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 362 | [SCI_RNC_TX_RX_SUSPENDED] = { |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 363 | .enter_state = scic_sds_remote_node_context_tx_rx_suspended_state_enter, |
| 364 | }, |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 365 | [SCI_RNC_AWAIT_SUSPENSION] = { }, |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 366 | }; |
| 367 | |
Dan Williams | 9614395 | 2011-04-19 18:35:58 -0700 | [diff] [blame] | 368 | void scic_sds_remote_node_context_construct(struct scic_sds_remote_node_context *rnc, |
| 369 | u16 remote_node_index) |
Dan Williams | 35173d5 | 2011-03-26 16:43:01 -0700 | [diff] [blame] | 370 | { |
| 371 | memset(rnc, 0, sizeof(struct scic_sds_remote_node_context)); |
| 372 | |
| 373 | rnc->remote_node_index = remote_node_index; |
Dan Williams | 35173d5 | 2011-03-26 16:43:01 -0700 | [diff] [blame] | 374 | rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED; |
| 375 | |
Edmund Nadolski | 12ef654 | 2011-06-02 00:10:50 +0000 | [diff] [blame] | 376 | sci_init_sm(&rnc->sm, scic_sds_remote_node_context_state_table, SCI_RNC_INITIAL); |
Dan Williams | 35173d5 | 2011-03-26 16:43:01 -0700 | [diff] [blame] | 377 | } |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 378 | |
| 379 | enum sci_status scic_sds_remote_node_context_event_handler(struct scic_sds_remote_node_context *sci_rnc, |
| 380 | u32 event_code) |
| 381 | { |
| 382 | enum scis_sds_remote_node_context_states state; |
| 383 | |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 384 | state = sci_rnc->sm.current_state_id; |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 385 | switch (state) { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 386 | case SCI_RNC_POSTING: |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 387 | switch (scu_get_event_code(event_code)) { |
| 388 | case SCU_EVENT_POST_RNC_COMPLETE: |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 389 | sci_change_state(&sci_rnc->sm, SCI_RNC_READY); |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 390 | break; |
| 391 | default: |
| 392 | goto out; |
| 393 | } |
| 394 | break; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 395 | case SCI_RNC_INVALIDATING: |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 396 | if (scu_get_event_code(event_code) == SCU_EVENT_POST_RNC_INVALIDATE_COMPLETE) { |
| 397 | if (sci_rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL) |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 398 | state = SCI_RNC_INITIAL; |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 399 | else |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 400 | state = SCI_RNC_POSTING; |
| 401 | sci_change_state(&sci_rnc->sm, state); |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 402 | } else { |
| 403 | switch (scu_get_event_type(event_code)) { |
| 404 | case SCU_EVENT_TYPE_RNC_SUSPEND_TX: |
| 405 | case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX: |
| 406 | /* We really dont care if the hardware is going to suspend |
| 407 | * the device since it's being invalidated anyway */ |
| 408 | dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 409 | "%s: SCIC Remote Node Context 0x%p was " |
| 410 | "suspeneded by hardware while being " |
| 411 | "invalidated.\n", __func__, sci_rnc); |
| 412 | break; |
| 413 | default: |
| 414 | goto out; |
| 415 | } |
| 416 | } |
| 417 | break; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 418 | case SCI_RNC_RESUMING: |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 419 | if (scu_get_event_code(event_code) == SCU_EVENT_POST_RCN_RELEASE) { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 420 | sci_change_state(&sci_rnc->sm, SCI_RNC_READY); |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 421 | } else { |
| 422 | switch (scu_get_event_type(event_code)) { |
| 423 | case SCU_EVENT_TYPE_RNC_SUSPEND_TX: |
| 424 | case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX: |
| 425 | /* We really dont care if the hardware is going to suspend |
| 426 | * the device since it's being resumed anyway */ |
| 427 | dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 428 | "%s: SCIC Remote Node Context 0x%p was " |
| 429 | "suspeneded by hardware while being resumed.\n", |
| 430 | __func__, sci_rnc); |
| 431 | break; |
| 432 | default: |
| 433 | goto out; |
| 434 | } |
| 435 | } |
| 436 | break; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 437 | case SCI_RNC_READY: |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 438 | switch (scu_get_event_type(event_code)) { |
| 439 | case SCU_EVENT_TL_RNC_SUSPEND_TX: |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 440 | sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED); |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 441 | sci_rnc->suspension_code = scu_get_event_specifier(event_code); |
| 442 | break; |
| 443 | case SCU_EVENT_TL_RNC_SUSPEND_TX_RX: |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 444 | sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED); |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 445 | sci_rnc->suspension_code = scu_get_event_specifier(event_code); |
| 446 | break; |
| 447 | default: |
| 448 | goto out; |
| 449 | } |
| 450 | break; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 451 | case SCI_RNC_AWAIT_SUSPENSION: |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 452 | switch (scu_get_event_type(event_code)) { |
| 453 | case SCU_EVENT_TL_RNC_SUSPEND_TX: |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 454 | sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED); |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 455 | sci_rnc->suspension_code = scu_get_event_specifier(event_code); |
| 456 | break; |
| 457 | case SCU_EVENT_TL_RNC_SUSPEND_TX_RX: |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 458 | sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED); |
Dan Williams | 338e386 | 2011-05-12 07:46:59 -0700 | [diff] [blame] | 459 | sci_rnc->suspension_code = scu_get_event_specifier(event_code); |
| 460 | break; |
| 461 | default: |
| 462 | goto out; |
| 463 | } |
| 464 | break; |
| 465 | default: |
| 466 | dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 467 | "%s: invalid state %d\n", __func__, state); |
| 468 | return SCI_FAILURE_INVALID_STATE; |
| 469 | } |
| 470 | return SCI_SUCCESS; |
| 471 | |
| 472 | out: |
| 473 | dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 474 | "%s: code: %#x state: %d\n", __func__, event_code, state); |
| 475 | return SCI_FAILURE; |
| 476 | |
| 477 | } |
Dan Williams | c845ae9 | 2011-05-12 08:26:56 -0700 | [diff] [blame] | 478 | |
| 479 | enum sci_status scic_sds_remote_node_context_destruct(struct scic_sds_remote_node_context *sci_rnc, |
| 480 | scics_sds_remote_node_context_callback cb_fn, |
| 481 | void *cb_p) |
| 482 | { |
| 483 | enum scis_sds_remote_node_context_states state; |
| 484 | |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 485 | state = sci_rnc->sm.current_state_id; |
Dan Williams | c845ae9 | 2011-05-12 08:26:56 -0700 | [diff] [blame] | 486 | switch (state) { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 487 | case SCI_RNC_INVALIDATING: |
Dan Williams | c845ae9 | 2011-05-12 08:26:56 -0700 | [diff] [blame] | 488 | scic_sds_remote_node_context_setup_to_destory(sci_rnc, cb_fn, cb_p); |
| 489 | return SCI_SUCCESS; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 490 | case SCI_RNC_POSTING: |
| 491 | case SCI_RNC_RESUMING: |
| 492 | case SCI_RNC_READY: |
| 493 | case SCI_RNC_TX_SUSPENDED: |
| 494 | case SCI_RNC_TX_RX_SUSPENDED: |
| 495 | case SCI_RNC_AWAIT_SUSPENSION: |
Dan Williams | c845ae9 | 2011-05-12 08:26:56 -0700 | [diff] [blame] | 496 | scic_sds_remote_node_context_setup_to_destory(sci_rnc, cb_fn, cb_p); |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 497 | sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING); |
Dan Williams | c845ae9 | 2011-05-12 08:26:56 -0700 | [diff] [blame] | 498 | return SCI_SUCCESS; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 499 | case SCI_RNC_INITIAL: |
Dan Williams | c845ae9 | 2011-05-12 08:26:56 -0700 | [diff] [blame] | 500 | dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 501 | "%s: invalid state %d\n", __func__, state); |
| 502 | /* We have decided that the destruct request on the remote node context |
| 503 | * can not fail since it is either in the initial/destroyed state or is |
| 504 | * can be destroyed. |
| 505 | */ |
| 506 | return SCI_SUCCESS; |
| 507 | default: |
| 508 | dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 509 | "%s: invalid state %d\n", __func__, state); |
| 510 | return SCI_FAILURE_INVALID_STATE; |
| 511 | } |
| 512 | } |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 513 | |
| 514 | enum sci_status scic_sds_remote_node_context_suspend(struct scic_sds_remote_node_context *sci_rnc, |
| 515 | u32 suspend_type, |
| 516 | scics_sds_remote_node_context_callback cb_fn, |
| 517 | void *cb_p) |
| 518 | { |
| 519 | enum scis_sds_remote_node_context_states state; |
| 520 | |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 521 | state = sci_rnc->sm.current_state_id; |
| 522 | if (state != SCI_RNC_READY) { |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 523 | dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 524 | "%s: invalid state %d\n", __func__, state); |
| 525 | return SCI_FAILURE_INVALID_STATE; |
| 526 | } |
| 527 | |
| 528 | sci_rnc->user_callback = cb_fn; |
| 529 | sci_rnc->user_cookie = cb_p; |
| 530 | sci_rnc->suspension_code = suspend_type; |
| 531 | |
| 532 | if (suspend_type == SCI_SOFTWARE_SUSPENSION) { |
| 533 | scic_sds_remote_device_post_request(rnc_to_dev(sci_rnc), |
| 534 | SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX); |
| 535 | } |
| 536 | |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 537 | sci_change_state(&sci_rnc->sm, SCI_RNC_AWAIT_SUSPENSION); |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 538 | return SCI_SUCCESS; |
| 539 | } |
| 540 | |
| 541 | enum sci_status scic_sds_remote_node_context_resume(struct scic_sds_remote_node_context *sci_rnc, |
| 542 | scics_sds_remote_node_context_callback cb_fn, |
| 543 | void *cb_p) |
| 544 | { |
| 545 | enum scis_sds_remote_node_context_states state; |
| 546 | |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 547 | state = sci_rnc->sm.current_state_id; |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 548 | switch (state) { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 549 | case SCI_RNC_INITIAL: |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 550 | if (sci_rnc->remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) |
| 551 | return SCI_FAILURE_INVALID_STATE; |
| 552 | |
| 553 | scic_sds_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); |
| 554 | scic_sds_remote_node_context_construct_buffer(sci_rnc); |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 555 | sci_change_state(&sci_rnc->sm, SCI_RNC_POSTING); |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 556 | return SCI_SUCCESS; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 557 | case SCI_RNC_POSTING: |
| 558 | case SCI_RNC_INVALIDATING: |
| 559 | case SCI_RNC_RESUMING: |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 560 | if (sci_rnc->destination_state != SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY) |
| 561 | return SCI_FAILURE_INVALID_STATE; |
| 562 | |
| 563 | sci_rnc->user_callback = cb_fn; |
| 564 | sci_rnc->user_cookie = cb_p; |
| 565 | return SCI_SUCCESS; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 566 | case SCI_RNC_TX_SUSPENDED: { |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 567 | struct scic_sds_remote_device *sci_dev = rnc_to_dev(sci_rnc); |
| 568 | struct domain_device *dev = sci_dev_to_domain(sci_dev); |
| 569 | |
| 570 | scic_sds_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); |
| 571 | |
| 572 | /* TODO: consider adding a resume action of NONE, INVALIDATE, WRITE_TLCR */ |
| 573 | if (dev->dev_type == SAS_END_DEV || dev_is_expander(dev)) |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 574 | sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING); |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 575 | else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { |
| 576 | if (sci_dev->is_direct_attached) { |
| 577 | /* @todo Fix this since I am being silly in writing to the STPTLDARNI register. */ |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 578 | sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING); |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 579 | } else { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 580 | sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING); |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 581 | } |
| 582 | } else |
| 583 | return SCI_FAILURE; |
| 584 | return SCI_SUCCESS; |
| 585 | } |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 586 | case SCI_RNC_TX_RX_SUSPENDED: |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 587 | scic_sds_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 588 | sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING); |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 589 | return SCI_FAILURE_INVALID_STATE; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 590 | case SCI_RNC_AWAIT_SUSPENSION: |
Dan Williams | ed3efb7 | 2011-05-12 08:50:23 -0700 | [diff] [blame] | 591 | scic_sds_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); |
| 592 | return SCI_SUCCESS; |
| 593 | default: |
| 594 | dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 595 | "%s: invalid state %d\n", __func__, state); |
| 596 | return SCI_FAILURE_INVALID_STATE; |
| 597 | } |
| 598 | } |
Dan Williams | f34d9e5 | 2011-05-12 09:27:52 -0700 | [diff] [blame] | 599 | |
| 600 | enum sci_status scic_sds_remote_node_context_start_io(struct scic_sds_remote_node_context *sci_rnc, |
| 601 | struct scic_sds_request *sci_req) |
| 602 | { |
| 603 | enum scis_sds_remote_node_context_states state; |
| 604 | |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 605 | state = sci_rnc->sm.current_state_id; |
Jeff Skirvin | fd53660 | 2011-06-20 14:09:22 -0700 | [diff] [blame^] | 606 | |
| 607 | switch (state) { |
| 608 | case SCI_RNC_READY: |
| 609 | return SCI_SUCCESS; |
| 610 | case SCI_RNC_TX_SUSPENDED: |
| 611 | case SCI_RNC_TX_RX_SUSPENDED: |
| 612 | case SCI_RNC_AWAIT_SUSPENSION: |
Dan Williams | f34d9e5 | 2011-05-12 09:27:52 -0700 | [diff] [blame] | 613 | dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 614 | "%s: invalid state %d\n", __func__, state); |
| 615 | return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED; |
Jeff Skirvin | fd53660 | 2011-06-20 14:09:22 -0700 | [diff] [blame^] | 616 | default: |
| 617 | break; |
Dan Williams | f34d9e5 | 2011-05-12 09:27:52 -0700 | [diff] [blame] | 618 | } |
Jeff Skirvin | fd53660 | 2011-06-20 14:09:22 -0700 | [diff] [blame^] | 619 | dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 620 | "%s: requested to start IO while still resuming, %d\n", |
| 621 | __func__, state); |
| 622 | return SCI_FAILURE_INVALID_STATE; |
Dan Williams | f34d9e5 | 2011-05-12 09:27:52 -0700 | [diff] [blame] | 623 | } |
| 624 | |
| 625 | enum sci_status scic_sds_remote_node_context_start_task(struct scic_sds_remote_node_context *sci_rnc, |
| 626 | struct scic_sds_request *sci_req) |
| 627 | { |
| 628 | enum scis_sds_remote_node_context_states state; |
| 629 | |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 630 | state = sci_rnc->sm.current_state_id; |
Dan Williams | f34d9e5 | 2011-05-12 09:27:52 -0700 | [diff] [blame] | 631 | switch (state) { |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 632 | case SCI_RNC_RESUMING: |
| 633 | case SCI_RNC_READY: |
| 634 | case SCI_RNC_AWAIT_SUSPENSION: |
Dan Williams | f34d9e5 | 2011-05-12 09:27:52 -0700 | [diff] [blame] | 635 | return SCI_SUCCESS; |
Edmund Nadolski | e301370 | 2011-06-02 00:10:43 +0000 | [diff] [blame] | 636 | case SCI_RNC_TX_SUSPENDED: |
| 637 | case SCI_RNC_TX_RX_SUSPENDED: |
Dan Williams | f34d9e5 | 2011-05-12 09:27:52 -0700 | [diff] [blame] | 638 | scic_sds_remote_node_context_resume(sci_rnc, NULL, NULL); |
| 639 | return SCI_SUCCESS; |
| 640 | default: |
| 641 | dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), |
| 642 | "%s: invalid state %d\n", __func__, state); |
| 643 | return SCI_FAILURE_INVALID_STATE; |
| 644 | } |
| 645 | } |