88f3b62ac1
Now that the core/lldd remote_device data structures are nominally unified merge the corresponding sources into the top-level directory. Also move the remote_node_context infrastructure which has no analog at the lldd level. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
488 lines
15 KiB
C
488 lines
15 KiB
C
/*
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
* redistributing this file, you may do so under either license.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
|
* The full GNU General Public License is included in this distribution
|
|
* in the file called LICENSE.GPL.
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* This file contains the isci port implementation.
|
|
*
|
|
*
|
|
*/
|
|
|
|
|
|
#include <linux/workqueue.h>
|
|
#include "isci.h"
|
|
#include "scic_io_request.h"
|
|
#include "scic_phy.h"
|
|
#include "scic_sds_phy.h"
|
|
#include "scic_port.h"
|
|
#include "port.h"
|
|
#include "request.h"
|
|
|
|
static void isci_port_change_state(
|
|
struct isci_port *isci_port,
|
|
enum isci_status status);
|
|
|
|
|
|
|
|
/**
|
|
* isci_port_init() - This function initializes the given isci_port object.
|
|
* @isci_port: This parameter specifies the port object to be initialized.
|
|
* @isci_host: This parameter specifies parent controller object for the port.
|
|
* @index: This parameter specifies which SCU port the isci_port associates
|
|
* with. Generally, SCU port 0 relates to isci_port 0, etc.
|
|
*
|
|
*/
|
|
void isci_port_init(
|
|
struct isci_port *isci_port,
|
|
struct isci_host *isci_host,
|
|
int index)
|
|
{
|
|
struct scic_sds_port *scic_port;
|
|
struct scic_sds_controller *controller = isci_host->core_controller;
|
|
|
|
INIT_LIST_HEAD(&isci_port->remote_dev_list);
|
|
INIT_LIST_HEAD(&isci_port->domain_dev_list);
|
|
spin_lock_init(&isci_port->state_lock);
|
|
init_completion(&isci_port->start_complete);
|
|
isci_port->isci_host = isci_host;
|
|
isci_port_change_state(isci_port, isci_freed);
|
|
|
|
(void)scic_controller_get_port_handle(controller, index, &scic_port);
|
|
sci_object_set_association(scic_port, isci_port);
|
|
isci_port->sci_port_handle = scic_port;
|
|
}
|
|
|
|
|
|
/**
|
|
* isci_port_get_state() - This function gets the status of the port object.
|
|
* @isci_port: This parameter points to the isci_port object
|
|
*
|
|
* status of the object as a isci_status enum.
|
|
*/
|
|
enum isci_status isci_port_get_state(
|
|
struct isci_port *isci_port)
|
|
{
|
|
return isci_port->status;
|
|
}
|
|
|
|
static void isci_port_change_state(
|
|
struct isci_port *isci_port,
|
|
enum isci_status status)
|
|
{
|
|
unsigned long flags;
|
|
|
|
dev_dbg(&isci_port->isci_host->pdev->dev,
|
|
"%s: isci_port = %p, state = 0x%x\n",
|
|
__func__, isci_port, status);
|
|
|
|
spin_lock_irqsave(&isci_port->state_lock, flags);
|
|
isci_port->status = status;
|
|
spin_unlock_irqrestore(&isci_port->state_lock, flags);
|
|
}
|
|
|
|
void isci_port_bc_change_received(
|
|
struct isci_host *isci_host,
|
|
struct scic_sds_port *port,
|
|
struct scic_sds_phy *phy)
|
|
{
|
|
struct isci_phy *isci_phy =
|
|
(struct isci_phy *)sci_object_get_association(phy);
|
|
|
|
dev_dbg(&isci_host->pdev->dev,
|
|
"%s: isci_phy = %p, sas_phy = %p\n",
|
|
__func__,
|
|
isci_phy,
|
|
&isci_phy->sas_phy);
|
|
|
|
isci_host->sas_ha.notify_port_event(
|
|
&isci_phy->sas_phy,
|
|
PORTE_BROADCAST_RCVD
|
|
);
|
|
|
|
scic_port_enable_broadcast_change_notification(port);
|
|
}
|
|
|
|
/**
|
|
* isci_port_link_up() - This function is called by the sci core when a link
|
|
* becomes active. the identify address frame is retrieved from the core and
|
|
* a notify port event is sent to libsas.
|
|
* @isci_host: This parameter specifies the isci host object.
|
|
* @port: This parameter specifies the sci port with the active link.
|
|
* @phy: This parameter specifies the sci phy with the active link.
|
|
*
|
|
*/
|
|
void isci_port_link_up(
|
|
struct isci_host *isci_host,
|
|
struct scic_sds_port *port,
|
|
struct scic_sds_phy *phy)
|
|
{
|
|
unsigned long flags;
|
|
struct scic_port_properties properties;
|
|
struct isci_phy *isci_phy
|
|
= (struct isci_phy *)sci_object_get_association(phy);
|
|
struct isci_port *isci_port
|
|
= (struct isci_port *)sci_object_get_association(port);
|
|
enum sci_status call_status;
|
|
unsigned long success = true;
|
|
|
|
BUG_ON(isci_phy->isci_port != NULL);
|
|
|
|
isci_phy->isci_port = isci_port;
|
|
|
|
dev_dbg(&isci_host->pdev->dev,
|
|
"%s: isci_port = %p\n",
|
|
__func__, isci_port);
|
|
|
|
spin_lock_irqsave(&isci_phy->sas_phy.frame_rcvd_lock, flags);
|
|
|
|
isci_port_change_state(isci_phy->isci_port, isci_starting);
|
|
|
|
scic_port_get_properties(port, &properties);
|
|
|
|
if (properties.remote.protocols.u.bits.stp_target) {
|
|
u64 attached_sas_address;
|
|
|
|
struct scic_sata_phy_properties sata_phy_properties;
|
|
|
|
isci_phy->sas_phy.oob_mode = SATA_OOB_MODE;
|
|
|
|
/* Get a copy of the signature fis for libsas */
|
|
call_status = scic_sata_phy_get_properties(phy,
|
|
&sata_phy_properties);
|
|
|
|
/*
|
|
* XXX I am concerned about this "assert". shouldn't we
|
|
* handle the return appropriately?
|
|
*/
|
|
BUG_ON(call_status != SCI_SUCCESS);
|
|
|
|
memcpy(isci_phy->frame_rcvd.fis,
|
|
&sata_phy_properties.signature_fis,
|
|
sizeof(struct sata_fis_reg_d2h));
|
|
|
|
isci_phy->sas_phy.frame_rcvd_size = sizeof(struct sata_fis_reg_d2h);
|
|
|
|
/*
|
|
* For direct-attached SATA devices, the SCI core will
|
|
* automagically assign a SAS address to the end device
|
|
* for the purpose of creating a port. This SAS address
|
|
* will not be the same as assigned to the PHY and needs
|
|
* to be obtained from struct scic_port_properties properties.
|
|
*/
|
|
attached_sas_address = properties.remote.sas_address.high;
|
|
attached_sas_address <<= 32;
|
|
attached_sas_address |= properties.remote.sas_address.low;
|
|
swab64s(&attached_sas_address);
|
|
|
|
memcpy(&isci_phy->sas_phy.attached_sas_addr,
|
|
&attached_sas_address, sizeof(attached_sas_address));
|
|
|
|
} else if (properties.remote.protocols.u.bits.ssp_target ||
|
|
properties.remote.protocols.u.bits.smp_target) {
|
|
|
|
struct scic_sas_phy_properties sas_phy_properties;
|
|
|
|
isci_phy->sas_phy.oob_mode = SAS_OOB_MODE;
|
|
|
|
/* Get a copy of the identify address frame for libsas */
|
|
call_status = scic_sas_phy_get_properties(phy,
|
|
&sas_phy_properties);
|
|
|
|
BUG_ON(call_status != SCI_SUCCESS);
|
|
|
|
memcpy(isci_phy->frame_rcvd.aif,
|
|
&(sas_phy_properties.received_iaf),
|
|
sizeof(struct sci_sas_identify_address_frame));
|
|
|
|
isci_phy->sas_phy.frame_rcvd_size
|
|
= sizeof(struct sci_sas_identify_address_frame);
|
|
|
|
/* Copy the attached SAS address from the IAF */
|
|
memcpy(isci_phy->sas_phy.attached_sas_addr,
|
|
((struct sas_identify_frame *)
|
|
(&isci_phy->frame_rcvd.aif))->sas_addr,
|
|
SAS_ADDR_SIZE);
|
|
|
|
} else {
|
|
dev_err(&isci_host->pdev->dev, "%s: unkown target\n", __func__);
|
|
success = false;
|
|
}
|
|
|
|
isci_phy->sas_phy.phy->negotiated_linkrate = sci_phy_linkrate(phy);
|
|
|
|
spin_unlock_irqrestore(&isci_phy->sas_phy.frame_rcvd_lock, flags);
|
|
|
|
/* Notify libsas that we have an address frame, if indeed
|
|
* we've found an SSP, SMP, or STP target */
|
|
if (success)
|
|
isci_host->sas_ha.notify_port_event(&isci_phy->sas_phy,
|
|
PORTE_BYTES_DMAED);
|
|
}
|
|
|
|
|
|
/**
|
|
* isci_port_link_down() - This function is called by the sci core when a link
|
|
* becomes inactive.
|
|
* @isci_host: This parameter specifies the isci host object.
|
|
* @phy: This parameter specifies the isci phy with the active link.
|
|
* @port: This parameter specifies the isci port with the active link.
|
|
*
|
|
*/
|
|
void isci_port_link_down(struct isci_host *isci_host, struct isci_phy *isci_phy,
|
|
struct isci_port *isci_port)
|
|
{
|
|
struct isci_remote_device *isci_device;
|
|
|
|
dev_dbg(&isci_host->pdev->dev,
|
|
"%s: isci_port = %p\n", __func__, isci_port);
|
|
|
|
if (isci_port) {
|
|
|
|
/* check to see if this is the last phy on this port. */
|
|
if (isci_phy->sas_phy.port
|
|
&& isci_phy->sas_phy.port->num_phys == 1) {
|
|
|
|
/* change the state for all devices on this port.
|
|
* The next task sent to this device will be returned
|
|
* as SAS_TASK_UNDELIVERED, and the scsi mid layer
|
|
* will remove the target
|
|
*/
|
|
list_for_each_entry(isci_device,
|
|
&isci_port->remote_dev_list,
|
|
node) {
|
|
dev_dbg(&isci_host->pdev->dev,
|
|
"%s: isci_device = %p\n",
|
|
__func__, isci_device);
|
|
isci_remote_device_change_state(isci_device,
|
|
isci_stopping);
|
|
}
|
|
}
|
|
isci_port_change_state(isci_port, isci_stopping);
|
|
}
|
|
|
|
/* Notify libsas of the borken link, this will trigger calls to our
|
|
* isci_port_deformed and isci_dev_gone functions.
|
|
*/
|
|
sas_phy_disconnected(&isci_phy->sas_phy);
|
|
isci_host->sas_ha.notify_phy_event(&isci_phy->sas_phy,
|
|
PHYE_LOSS_OF_SIGNAL);
|
|
|
|
isci_phy->isci_port = NULL;
|
|
|
|
dev_dbg(&isci_host->pdev->dev,
|
|
"%s: isci_port = %p - Done\n", __func__, isci_port);
|
|
}
|
|
|
|
|
|
/**
|
|
* isci_port_deformed() - This function is called by libsas when a port becomes
|
|
* inactive.
|
|
* @phy: This parameter specifies the libsas phy with the inactive port.
|
|
*
|
|
*/
|
|
void isci_port_deformed(
|
|
struct asd_sas_phy *phy)
|
|
{
|
|
pr_debug("%s: sas_phy = %p\n", __func__, phy);
|
|
}
|
|
|
|
/**
|
|
* isci_port_formed() - This function is called by libsas when a port becomes
|
|
* active.
|
|
* @phy: This parameter specifies the libsas phy with the active port.
|
|
*
|
|
*/
|
|
void isci_port_formed(
|
|
struct asd_sas_phy *phy)
|
|
{
|
|
pr_debug("%s: sas_phy = %p, sas_port = %p\n", __func__, phy, phy->port);
|
|
}
|
|
|
|
/**
|
|
* isci_port_ready() - This function is called by the sci core when a link
|
|
* becomes ready.
|
|
* @isci_host: This parameter specifies the isci host object.
|
|
* @port: This parameter specifies the sci port with the active link.
|
|
*
|
|
*/
|
|
void isci_port_ready(struct isci_host *isci_host, struct isci_port *isci_port)
|
|
{
|
|
dev_dbg(&isci_host->pdev->dev,
|
|
"%s: isci_port = %p\n", __func__, isci_port);
|
|
|
|
complete_all(&isci_port->start_complete);
|
|
isci_port_change_state(isci_port, isci_ready);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* isci_port_not_ready() - This function is called by the sci core when a link
|
|
* is not ready. All remote devices on this link will be removed if they are
|
|
* in the stopping state.
|
|
* @isci_host: This parameter specifies the isci host object.
|
|
* @port: This parameter specifies the sci port with the active link.
|
|
*
|
|
*/
|
|
void isci_port_not_ready(struct isci_host *isci_host, struct isci_port *isci_port)
|
|
{
|
|
dev_dbg(&isci_host->pdev->dev,
|
|
"%s: isci_port = %p\n", __func__, isci_port);
|
|
}
|
|
|
|
/**
|
|
* isci_port_hard_reset_complete() - This function is called by the sci core
|
|
* when the hard reset complete notification has been received.
|
|
* @port: This parameter specifies the sci port with the active link.
|
|
* @completion_status: This parameter specifies the core status for the reset
|
|
* process.
|
|
*
|
|
*/
|
|
void isci_port_hard_reset_complete(struct isci_port *isci_port,
|
|
enum sci_status completion_status)
|
|
{
|
|
dev_dbg(&isci_port->isci_host->pdev->dev,
|
|
"%s: isci_port = %p, completion_status=%x\n",
|
|
__func__, isci_port, completion_status);
|
|
|
|
/* Save the status of the hard reset from the port. */
|
|
isci_port->hard_reset_status = completion_status;
|
|
|
|
complete_all(&isci_port->hard_reset_complete);
|
|
}
|
|
|
|
int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
|
|
struct isci_phy *iphy)
|
|
{
|
|
unsigned long flags;
|
|
enum sci_status status;
|
|
int ret = TMF_RESP_FUNC_COMPLETE;
|
|
|
|
dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
|
|
__func__, iport);
|
|
|
|
init_completion(&iport->hard_reset_complete);
|
|
|
|
spin_lock_irqsave(&ihost->scic_lock, flags);
|
|
|
|
#define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
|
|
status = scic_port_hard_reset(iport->sci_port_handle,
|
|
ISCI_PORT_RESET_TIMEOUT);
|
|
|
|
spin_unlock_irqrestore(&ihost->scic_lock, flags);
|
|
|
|
if (status == SCI_SUCCESS) {
|
|
wait_for_completion(&iport->hard_reset_complete);
|
|
|
|
dev_dbg(&ihost->pdev->dev,
|
|
"%s: iport = %p; hard reset completion\n",
|
|
__func__, iport);
|
|
|
|
if (iport->hard_reset_status != SCI_SUCCESS)
|
|
ret = TMF_RESP_FUNC_FAILED;
|
|
} else {
|
|
ret = TMF_RESP_FUNC_FAILED;
|
|
|
|
dev_err(&ihost->pdev->dev,
|
|
"%s: iport = %p; scic_port_hard_reset call"
|
|
" failed 0x%x\n",
|
|
__func__, iport, status);
|
|
|
|
}
|
|
|
|
/* If the hard reset for the port has failed, consider this
|
|
* the same as link failures on all phys in the port.
|
|
*/
|
|
if (ret != TMF_RESP_FUNC_COMPLETE) {
|
|
dev_err(&ihost->pdev->dev,
|
|
"%s: iport = %p; hard reset failed "
|
|
"(0x%x) - sending link down to libsas for phy %p\n",
|
|
__func__, iport, iport->hard_reset_status, iphy);
|
|
|
|
isci_port_link_down(ihost, iphy, iport);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* isci_port_invalid_link_up() - This function informs the SCI Core user that
|
|
* a phy/link became ready, but the phy is not allowed in the port. In some
|
|
* situations the underlying hardware only allows for certain phy to port
|
|
* mappings. If these mappings are violated, then this API is invoked.
|
|
* @controller: This parameter represents the controller which contains the
|
|
* port.
|
|
* @port: This parameter specifies the SCI port object for which the callback
|
|
* is being invoked.
|
|
* @phy: This parameter specifies the phy that came ready, but the phy can't be
|
|
* a valid member of the port.
|
|
*
|
|
*/
|
|
void isci_port_invalid_link_up(struct scic_sds_controller *scic,
|
|
struct scic_sds_port *sci_port,
|
|
struct scic_sds_phy *phy)
|
|
{
|
|
struct isci_host *ihost = sci_object_get_association(scic);
|
|
|
|
dev_warn(&ihost->pdev->dev, "Invalid link up!\n");
|
|
}
|
|
|
|
void isci_port_stop_complete(struct scic_sds_controller *scic,
|
|
struct scic_sds_port *sci_port,
|
|
enum sci_status completion_status)
|
|
{
|
|
struct isci_host *ihost = sci_object_get_association(scic);
|
|
|
|
dev_dbg(&ihost->pdev->dev, "Port stop complete\n");
|
|
}
|