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.
7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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.
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.
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.
26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
27 * All rights reserved.
29 * Redistribution and use in source and binary forms, with or without
30 * modification, are permitted provided that the following conditions
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
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.
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.
56 #include <linux/workqueue.h>
59 #include "scic_sds_phy.h"
60 #include "scic_port.h"
64 static void isci_port_change_state(struct isci_port *iport, enum isci_status status)
68 dev_dbg(&iport->isci_host->pdev->dev,
69 "%s: iport = %p, state = 0x%x\n",
70 __func__, iport, status);
72 /* XXX pointless lock */
73 spin_lock_irqsave(&iport->state_lock, flags);
74 iport->status = status;
75 spin_unlock_irqrestore(&iport->state_lock, flags);
78 void isci_port_init(struct isci_port *iport, struct isci_host *ihost, int index)
80 INIT_LIST_HEAD(&iport->remote_dev_list);
81 INIT_LIST_HEAD(&iport->domain_dev_list);
82 spin_lock_init(&iport->state_lock);
83 init_completion(&iport->start_complete);
84 iport->isci_host = ihost;
85 isci_port_change_state(iport, isci_freed);
89 * isci_port_get_state() - This function gets the status of the port object.
90 * @isci_port: This parameter points to the isci_port object
92 * status of the object as a isci_status enum.
94 enum isci_status isci_port_get_state(
95 struct isci_port *isci_port)
97 return isci_port->status;
100 void isci_port_bc_change_received(struct isci_host *ihost,
101 struct scic_sds_port *sci_port,
102 struct scic_sds_phy *sci_phy)
104 struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
106 dev_dbg(&ihost->pdev->dev, "%s: iphy = %p, sas_phy = %p\n",
107 __func__, iphy, &iphy->sas_phy);
109 ihost->sas_ha.notify_port_event(&iphy->sas_phy, PORTE_BROADCAST_RCVD);
110 scic_port_enable_broadcast_change_notification(sci_port);
113 void isci_port_link_up(struct isci_host *isci_host,
114 struct scic_sds_port *port,
115 struct scic_sds_phy *phy)
118 struct scic_port_properties properties;
119 struct isci_phy *isci_phy = sci_phy_to_iphy(phy);
120 struct isci_port *isci_port = sci_port_to_iport(port);
121 unsigned long success = true;
123 BUG_ON(isci_phy->isci_port != NULL);
125 isci_phy->isci_port = isci_port;
127 dev_dbg(&isci_host->pdev->dev,
128 "%s: isci_port = %p\n",
129 __func__, isci_port);
131 spin_lock_irqsave(&isci_phy->sas_phy.frame_rcvd_lock, flags);
133 isci_port_change_state(isci_phy->isci_port, isci_starting);
135 scic_port_get_properties(port, &properties);
137 if (phy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) {
138 u64 attached_sas_address;
140 isci_phy->sas_phy.oob_mode = SATA_OOB_MODE;
141 isci_phy->sas_phy.frame_rcvd_size = sizeof(struct dev_to_host_fis);
144 * For direct-attached SATA devices, the SCI core will
145 * automagically assign a SAS address to the end device
146 * for the purpose of creating a port. This SAS address
147 * will not be the same as assigned to the PHY and needs
148 * to be obtained from struct scic_port_properties properties.
150 attached_sas_address = properties.remote.sas_address.high;
151 attached_sas_address <<= 32;
152 attached_sas_address |= properties.remote.sas_address.low;
153 swab64s(&attached_sas_address);
155 memcpy(&isci_phy->sas_phy.attached_sas_addr,
156 &attached_sas_address, sizeof(attached_sas_address));
157 } else if (phy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) {
158 isci_phy->sas_phy.oob_mode = SAS_OOB_MODE;
159 isci_phy->sas_phy.frame_rcvd_size = sizeof(struct sas_identify_frame);
161 /* Copy the attached SAS address from the IAF */
162 memcpy(isci_phy->sas_phy.attached_sas_addr,
163 isci_phy->frame_rcvd.iaf.sas_addr, SAS_ADDR_SIZE);
165 dev_err(&isci_host->pdev->dev, "%s: unkown target\n", __func__);
169 isci_phy->sas_phy.phy->negotiated_linkrate = sci_phy_linkrate(phy);
171 spin_unlock_irqrestore(&isci_phy->sas_phy.frame_rcvd_lock, flags);
173 /* Notify libsas that we have an address frame, if indeed
174 * we've found an SSP, SMP, or STP target */
176 isci_host->sas_ha.notify_port_event(&isci_phy->sas_phy,
182 * isci_port_link_down() - This function is called by the sci core when a link
184 * @isci_host: This parameter specifies the isci host object.
185 * @phy: This parameter specifies the isci phy with the active link.
186 * @port: This parameter specifies the isci port with the active link.
189 void isci_port_link_down(struct isci_host *isci_host, struct isci_phy *isci_phy,
190 struct isci_port *isci_port)
192 struct isci_remote_device *isci_device;
194 dev_dbg(&isci_host->pdev->dev,
195 "%s: isci_port = %p\n", __func__, isci_port);
199 /* check to see if this is the last phy on this port. */
200 if (isci_phy->sas_phy.port
201 && isci_phy->sas_phy.port->num_phys == 1) {
203 /* change the state for all devices on this port.
204 * The next task sent to this device will be returned
205 * as SAS_TASK_UNDELIVERED, and the scsi mid layer
206 * will remove the target
208 list_for_each_entry(isci_device,
209 &isci_port->remote_dev_list,
211 dev_dbg(&isci_host->pdev->dev,
212 "%s: isci_device = %p\n",
213 __func__, isci_device);
214 isci_remote_device_change_state(isci_device,
218 isci_port_change_state(isci_port, isci_stopping);
221 /* Notify libsas of the borken link, this will trigger calls to our
222 * isci_port_deformed and isci_dev_gone functions.
224 sas_phy_disconnected(&isci_phy->sas_phy);
225 isci_host->sas_ha.notify_phy_event(&isci_phy->sas_phy,
226 PHYE_LOSS_OF_SIGNAL);
228 isci_phy->isci_port = NULL;
230 dev_dbg(&isci_host->pdev->dev,
231 "%s: isci_port = %p - Done\n", __func__, isci_port);
236 * isci_port_deformed() - This function is called by libsas when a port becomes
238 * @phy: This parameter specifies the libsas phy with the inactive port.
241 void isci_port_deformed(
242 struct asd_sas_phy *phy)
244 pr_debug("%s: sas_phy = %p\n", __func__, phy);
248 * isci_port_formed() - This function is called by libsas when a port becomes
250 * @phy: This parameter specifies the libsas phy with the active port.
253 void isci_port_formed(
254 struct asd_sas_phy *phy)
256 pr_debug("%s: sas_phy = %p, sas_port = %p\n", __func__, phy, phy->port);
260 * isci_port_ready() - This function is called by the sci core when a link
262 * @isci_host: This parameter specifies the isci host object.
263 * @port: This parameter specifies the sci port with the active link.
266 void isci_port_ready(struct isci_host *isci_host, struct isci_port *isci_port)
268 dev_dbg(&isci_host->pdev->dev,
269 "%s: isci_port = %p\n", __func__, isci_port);
271 complete_all(&isci_port->start_complete);
272 isci_port_change_state(isci_port, isci_ready);
277 * isci_port_not_ready() - This function is called by the sci core when a link
278 * is not ready. All remote devices on this link will be removed if they are
279 * in the stopping state.
280 * @isci_host: This parameter specifies the isci host object.
281 * @port: This parameter specifies the sci port with the active link.
284 void isci_port_not_ready(struct isci_host *isci_host, struct isci_port *isci_port)
286 dev_dbg(&isci_host->pdev->dev,
287 "%s: isci_port = %p\n", __func__, isci_port);
291 * isci_port_hard_reset_complete() - This function is called by the sci core
292 * when the hard reset complete notification has been received.
293 * @port: This parameter specifies the sci port with the active link.
294 * @completion_status: This parameter specifies the core status for the reset
298 void isci_port_hard_reset_complete(struct isci_port *isci_port,
299 enum sci_status completion_status)
301 dev_dbg(&isci_port->isci_host->pdev->dev,
302 "%s: isci_port = %p, completion_status=%x\n",
303 __func__, isci_port, completion_status);
305 /* Save the status of the hard reset from the port. */
306 isci_port->hard_reset_status = completion_status;
308 complete_all(&isci_port->hard_reset_complete);
311 int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
312 struct isci_phy *iphy)
315 enum sci_status status;
316 int ret = TMF_RESP_FUNC_COMPLETE;
318 dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
321 init_completion(&iport->hard_reset_complete);
323 spin_lock_irqsave(&ihost->scic_lock, flags);
325 #define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
326 status = scic_port_hard_reset(&iport->sci, ISCI_PORT_RESET_TIMEOUT);
328 spin_unlock_irqrestore(&ihost->scic_lock, flags);
330 if (status == SCI_SUCCESS) {
331 wait_for_completion(&iport->hard_reset_complete);
333 dev_dbg(&ihost->pdev->dev,
334 "%s: iport = %p; hard reset completion\n",
337 if (iport->hard_reset_status != SCI_SUCCESS)
338 ret = TMF_RESP_FUNC_FAILED;
340 ret = TMF_RESP_FUNC_FAILED;
342 dev_err(&ihost->pdev->dev,
343 "%s: iport = %p; scic_port_hard_reset call"
345 __func__, iport, status);
349 /* If the hard reset for the port has failed, consider this
350 * the same as link failures on all phys in the port.
352 if (ret != TMF_RESP_FUNC_COMPLETE) {
353 dev_err(&ihost->pdev->dev,
354 "%s: iport = %p; hard reset failed "
355 "(0x%x) - sending link down to libsas for phy %p\n",
356 __func__, iport, iport->hard_reset_status, iphy);
358 isci_port_link_down(ihost, iphy, iport);
364 void isci_port_stop_complete(struct scic_sds_controller *scic,
365 struct scic_sds_port *sci_port,
366 enum sci_status completion_status)
368 dev_dbg(&scic_to_ihost(scic)->pdev->dev, "Port stop complete\n");