-EXTRA_CFLAGS += -Idrivers/scsi/isci/core/ -Idrivers/scsi/isci/
obj-$(CONFIG_SCSI_ISCI) += isci.o
isci-objs := init.o phy.o request.o sata.o \
remote_device.o port.o timers.o \
stp_request.o \
ssp_request.o \
smp_request.o \
- core/scic_sds_port.o \
- core/scic_sds_port_configuration_agent.o \
+ port_config.o \
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_SDS_USER_PARAMETERS_H_
-#define _SCIC_SDS_USER_PARAMETERS_H_
-
-#include "probe_roms.h"
-
-struct scic_sds_controller;
-
-/**
- *
- *
- * SCIC_SDS_PARM_PHY_SPEED These constants define the speeds utilized for a
- * phy/port.
- */
-#define SCIC_SDS_PARM_NO_SPEED 0
-
-/**
- *
- *
- * This value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
- */
-#define SCIC_SDS_PARM_GEN1_SPEED 1
-
-/**
- *
- *
- * This value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
- */
-#define SCIC_SDS_PARM_GEN2_SPEED 2
-
-/**
- *
- *
- * This value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
- */
-#define SCIC_SDS_PARM_GEN3_SPEED 3
-
-/**
- *
- *
- * For range checks, the max speed generation
- */
-#define SCIC_SDS_PARM_MAX_SPEED SCIC_SDS_PARM_GEN3_SPEED
-
-/**
- * struct scic_sds_user_parameters - This structure delineates the various user
- * parameters that can be changed by the core user.
- *
- *
- */
-struct scic_sds_user_parameters {
- struct sci_phy_user_params {
- /**
- * This field specifies the NOTIFY (ENABLE SPIN UP) primitive
- * insertion frequency for this phy index.
- */
- u32 notify_enable_spin_up_insertion_frequency;
-
- /**
- * This method specifies the number of transmitted DWORDs within which
- * to transmit a single ALIGN primitive. This value applies regardless
- * of what type of device is attached or connection state. A value of
- * 0 indicates that no ALIGN primitives will be inserted.
- */
- u16 align_insertion_frequency;
-
- /**
- * This method specifies the number of transmitted DWORDs within which
- * to transmit 2 ALIGN primitives. This applies for SAS connections
- * only. A minimum value of 3 is required for this field.
- */
- u16 in_connection_align_insertion_frequency;
-
- /**
- * This field indicates the maximum speed generation to be utilized
- * by phys in the supplied port.
- * - A value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
- * - A value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
- * - A value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
- */
- u8 max_speed_generation;
-
- } phys[SCI_MAX_PHYS];
-
- /**
- * This field specifies the maximum number of direct attached devices
- * that can have power supplied to them simultaneously.
- */
- u8 max_number_concurrent_device_spin_up;
-
- /**
- * This field specifies the number of seconds to allow a phy to consume
- * power before yielding to another phy.
- *
- */
- u8 phy_spin_up_delay_interval;
-
- /**
- * These timer values specifies how long a link will remain open with no
- * activity in increments of a microsecond, it can be in increments of
- * 100 microseconds if the upper most bit is set.
- *
- */
- u16 stp_inactivity_timeout;
- u16 ssp_inactivity_timeout;
-
- /**
- * These timer values specifies how long a link will remain open in increments
- * of 100 microseconds.
- *
- */
- u16 stp_max_occupancy_timeout;
- u16 ssp_max_occupancy_timeout;
-
- /**
- * This timer value specifies how long a link will remain open with no
- * outbound traffic in increments of a microsecond.
- *
- */
- u8 no_outbound_task_timeout;
-
-};
-
-/**
- * This structure/union specifies the various different user parameter sets
- * available. Each type is specific to a hardware controller version.
- *
- * union scic_user_parameters
- */
-union scic_user_parameters {
- /**
- * This field specifies the user parameters specific to the
- * Storage Controller Unit (SCU) Driver Standard (SDS) version
- * 1.
- */
- struct scic_sds_user_parameters sds1;
-
-};
-
-
-/**
- *
- *
- * SCIC_SDS_OEM_PHY_MASK These constants define the valid values for phy_mask
- */
-
-/**
- *
- *
- * This is the min value assignable to a port's phy mask
- */
-#define SCIC_SDS_PARM_PHY_MASK_MIN 0x0
-
-/**
- *
- *
- * This is the max value assignable to a port's phy mask
- */
-#define SCIC_SDS_PARM_PHY_MASK_MAX 0xF
-
-#define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4
-
-/**
- * This structure/union specifies the various different OEM parameter sets
- * available. Each type is specific to a hardware controller version.
- *
- * union scic_oem_parameters
- */
-union scic_oem_parameters {
- /**
- * This field specifies the OEM parameters specific to the
- * Storage Controller Unit (SCU) Driver Standard (SDS) version
- * 1.
- */
- struct scic_sds_oem_params sds1;
-};
-
-int scic_oem_parameters_validate(struct scic_sds_oem_params *oem);
-
-/**
- * scic_oem_parameters_get() - This method allows the user to retreive the OEM
- * parameters utilized by the controller.
- * @controller: This parameter specifies the controller on which to set the
- * user parameters.
- * @oem_parameters: This parameter specifies the OEM parameters object in which
- * to write the core's OEM parameters.
- *
- */
-void scic_oem_parameters_get(
- struct scic_sds_controller *controller,
- union scic_oem_parameters *oem_parameters);
-
-
-#endif /* _SCIC_SDS_USER_PARAMETERS_H_ */
-
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_PORT_H_
-#define _SCIC_PORT_H_
-
-#include "isci.h"
-#include "sas.h"
-#include "phy.h"
-
-struct scic_sds_port;
-
-enum scic_port_not_ready_reason_code {
- SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS,
- SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED,
- SCIC_PORT_NOT_READY_INVALID_PORT_CONFIGURATION,
- SCIC_PORT_NOT_READY_RECONFIGURING,
-
- SCIC_PORT_NOT_READY_REASON_CODE_MAX
-};
-
-struct scic_port_end_point_properties {
- struct sci_sas_address sas_address;
- struct scic_phy_proto protocols;
-};
-
-struct scic_port_properties {
- u32 index;
- struct scic_port_end_point_properties local;
- struct scic_port_end_point_properties remote;
- u32 phy_mask;
-};
-
-enum sci_status scic_port_get_properties(
- struct scic_sds_port *port,
- struct scic_port_properties *properties);
-
-enum sci_status scic_port_hard_reset(
- struct scic_sds_port *port,
- u32 reset_timeout);
-
-void scic_port_enable_broadcast_change_notification(
- struct scic_sds_port *port);
-
-#endif /* _SCIC_PORT_H_ */
+++ /dev/null
-/*
- * 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.
- */
-
-#include "host.h"
-#include "scic_port.h"
-#include "scic_sds_port.h"
-#include "remote_device.h"
-#include "remote_node_context.h"
-#include "registers.h"
-#include "timers.h"
-#include "scu_task_context.h"
-
-#define SCIC_SDS_PORT_MIN_TIMER_COUNT (SCI_MAX_PORTS)
-#define SCIC_SDS_PORT_MAX_TIMER_COUNT (SCI_MAX_PORTS)
-
-#define SCIC_SDS_PORT_HARD_RESET_TIMEOUT (1000)
-#define SCU_DUMMY_INDEX (0xFFFF)
-
-
-/**
- *
- * @sci_port: This is the port object to which the phy is being assigned.
- * @phy_index: This is the phy index that is being assigned to the port.
- *
- * This method will return a true value if the specified phy can be assigned to
- * this port The following is a list of phys for each port that are allowed: -
- * Port 0 - 3 2 1 0 - Port 1 - 1 - Port 2 - 3 2 - Port 3 - 3 This method
- * doesn't preclude all configurations. It merely ensures that a phy is part
- * of the allowable set of phy identifiers for that port. For example, one
- * could assign phy 3 to port 0 and no other phys. Please refer to
- * scic_sds_port_is_phy_mask_valid() for information regarding whether the
- * phy_mask for a port can be supported. bool true if this is a valid phy
- * assignment for the port false if this is not a valid phy assignment for the
- * port
- */
-bool scic_sds_port_is_valid_phy_assignment(
- struct scic_sds_port *sci_port,
- u32 phy_index)
-{
- /* Initialize to invalid value. */
- u32 existing_phy_index = SCI_MAX_PHYS;
- u32 index;
-
- if ((sci_port->physical_port_index == 1) && (phy_index != 1)) {
- return false;
- }
-
- if (sci_port->physical_port_index == 3 && phy_index != 3) {
- return false;
- }
-
- if (
- (sci_port->physical_port_index == 2)
- && ((phy_index == 0) || (phy_index == 1))
- ) {
- return false;
- }
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- if ((sci_port->phy_table[index] != NULL)
- && (index != phy_index)) {
- existing_phy_index = index;
- }
- }
-
- /*
- * Ensure that all of the phys in the port are capable of
- * operating at the same maximum link rate. */
- if (
- (existing_phy_index < SCI_MAX_PHYS)
- && (sci_port->owning_controller->user_parameters.sds1.phys[
- phy_index].max_speed_generation !=
- sci_port->owning_controller->user_parameters.sds1.phys[
- existing_phy_index].max_speed_generation)
- )
- return false;
-
- return true;
-}
-
-/**
- * This method requests a list (mask) of the phys contained in the supplied SAS
- * port.
- * @sci_port: a handle corresponding to the SAS port for which to return the
- * phy mask.
- *
- * Return a bit mask indicating which phys are a part of this port. Each bit
- * corresponds to a phy identifier (e.g. bit 0 = phy id 0).
- */
-static u32 scic_sds_port_get_phys(struct scic_sds_port *sci_port)
-{
- u32 index;
- u32 mask;
-
- mask = 0;
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- if (sci_port->phy_table[index] != NULL) {
- mask |= (1 << index);
- }
- }
-
- return mask;
-}
-
-/**
- *
- * @sci_port: This is the port object for which to determine if the phy mask
- * can be supported.
- *
- * This method will return a true value if the port's phy mask can be supported
- * by the SCU. The following is a list of valid PHY mask configurations for
- * each port: - Port 0 - [[3 2] 1] 0 - Port 1 - [1] - Port 2 - [[3] 2]
- * - Port 3 - [3] This method returns a boolean indication specifying if the
- * phy mask can be supported. true if this is a valid phy assignment for the
- * port false if this is not a valid phy assignment for the port
- */
-static bool scic_sds_port_is_phy_mask_valid(
- struct scic_sds_port *sci_port,
- u32 phy_mask)
-{
- if (sci_port->physical_port_index == 0) {
- if (((phy_mask & 0x0F) == 0x0F)
- || ((phy_mask & 0x03) == 0x03)
- || ((phy_mask & 0x01) == 0x01)
- || (phy_mask == 0))
- return true;
- } else if (sci_port->physical_port_index == 1) {
- if (((phy_mask & 0x02) == 0x02)
- || (phy_mask == 0))
- return true;
- } else if (sci_port->physical_port_index == 2) {
- if (((phy_mask & 0x0C) == 0x0C)
- || ((phy_mask & 0x04) == 0x04)
- || (phy_mask == 0))
- return true;
- } else if (sci_port->physical_port_index == 3) {
- if (((phy_mask & 0x08) == 0x08)
- || (phy_mask == 0))
- return true;
- }
-
- return false;
-}
-
-/**
- *
- * @sci_port: This parameter specifies the port from which to return a
- * connected phy.
- *
- * This method retrieves a currently active (i.e. connected) phy contained in
- * the port. Currently, the lowest order phy that is connected is returned.
- * This method returns a pointer to a SCIS_SDS_PHY object. NULL This value is
- * returned if there are no currently active (i.e. connected to a remote end
- * point) phys contained in the port. All other values specify a struct scic_sds_phy
- * object that is active in the port.
- */
-static struct scic_sds_phy *scic_sds_port_get_a_connected_phy(
- struct scic_sds_port *sci_port
- ) {
- u32 index;
- struct scic_sds_phy *phy;
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- /*
- * Ensure that the phy is both part of the port and currently
- * connected to the remote end-point. */
- phy = sci_port->phy_table[index];
- if (
- (phy != NULL)
- && scic_sds_port_active_phy(sci_port, phy)
- ) {
- return phy;
- }
- }
-
- return NULL;
-}
-
-/**
- * scic_sds_port_set_phy() -
- * @out]: port The port object to which the phy assignement is being made.
- * @out]: phy The phy which is being assigned to the port.
- *
- * This method attempts to make the assignment of the phy to the port. If
- * successful the phy is assigned to the ports phy table. bool true if the phy
- * assignment can be made. false if the phy assignement can not be made. This
- * is a functional test that only fails if the phy is currently assigned to a
- * different port.
- */
-static enum sci_status scic_sds_port_set_phy(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- /*
- * Check to see if we can add this phy to a port
- * that means that the phy is not part of a port and that the port does
- * not already have a phy assinged to the phy index. */
- if (
- (port->phy_table[phy->phy_index] == NULL)
- && (scic_sds_phy_get_port(phy) == NULL)
- && scic_sds_port_is_valid_phy_assignment(port, phy->phy_index)
- ) {
- /*
- * Phy is being added in the stopped state so we are in MPC mode
- * make logical port index = physical port index */
- port->logical_port_index = port->physical_port_index;
- port->phy_table[phy->phy_index] = phy;
- scic_sds_phy_set_port(phy, port);
-
- return SCI_SUCCESS;
- }
-
- return SCI_FAILURE;
-}
-
-/**
- * scic_sds_port_clear_phy() -
- * @out]: port The port from which the phy is being cleared.
- * @out]: phy The phy being cleared from the port.
- *
- * This method will clear the phy assigned to this port. This method fails if
- * this phy is not currently assinged to this port. bool true if the phy is
- * removed from the port. false if this phy is not assined to this port.
- */
-static enum sci_status scic_sds_port_clear_phy(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- /* Make sure that this phy is part of this port */
- if (port->phy_table[phy->phy_index] == phy &&
- scic_sds_phy_get_port(phy) == port) {
- struct scic_sds_controller *scic = port->owning_controller;
- struct isci_host *ihost = scic_to_ihost(scic);
-
- /* Yep it is assigned to this port so remove it */
- scic_sds_phy_set_port(phy, &ihost->ports[SCI_MAX_PORTS].sci);
- port->phy_table[phy->phy_index] = NULL;
- return SCI_SUCCESS;
- }
-
- return SCI_FAILURE;
-}
-
-/**
- * scic_sds_port_add_phy() -
- * @sci_port: This parameter specifies the port in which the phy will be added.
- * @sci_phy: This parameter is the phy which is to be added to the port.
- *
- * This method will add a PHY to the selected port. This method returns an
- * enum sci_status. SCI_SUCCESS the phy has been added to the port. Any other status
- * is failre to add the phy to the port.
- */
-enum sci_status scic_sds_port_add_phy(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- return sci_port->state_handlers->add_phy_handler(
- sci_port, sci_phy);
-}
-
-
-/**
- * scic_sds_port_remove_phy() -
- * @sci_port: This parameter specifies the port in which the phy will be added.
- * @sci_phy: This parameter is the phy which is to be added to the port.
- *
- * This method will remove the PHY from the selected PORT. This method returns
- * an enum sci_status. SCI_SUCCESS the phy has been removed from the port. Any other
- * status is failre to add the phy to the port.
- */
-enum sci_status scic_sds_port_remove_phy(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- return sci_port->state_handlers->remove_phy_handler(
- sci_port, sci_phy);
-}
-
-/**
- * This method requests the SAS address for the supplied SAS port from the SCI
- * implementation.
- * @sci_port: a handle corresponding to the SAS port for which to return the
- * SAS address.
- * @sas_address: This parameter specifies a pointer to a SAS address structure
- * into which the core will copy the SAS address for the port.
- *
- */
-void scic_sds_port_get_sas_address(
- struct scic_sds_port *sci_port,
- struct sci_sas_address *sas_address)
-{
- u32 index;
-
- sas_address->high = 0;
- sas_address->low = 0;
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- if (sci_port->phy_table[index] != NULL) {
- scic_sds_phy_get_sas_address(sci_port->phy_table[index], sas_address);
- }
- }
-}
-
-/*
- * This function will indicate which protocols are supported by this port.
- * @sci_port: a handle corresponding to the SAS port for which to return the
- * supported protocols.
- * @protocols: This parameter specifies a pointer to a data structure
- * which the core will copy the protocol values for the port from the
- * transmit_identification register.
- */
-static void
-scic_sds_port_get_protocols(struct scic_sds_port *sci_port,
- struct scic_phy_proto *protocols)
-{
- u8 index;
-
- protocols->all = 0;
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- if (sci_port->phy_table[index] != NULL) {
- scic_sds_phy_get_protocols(sci_port->phy_table[index],
- protocols);
- }
- }
-}
-
-/*
- * This function requests the SAS address for the device directly attached to
- * this SAS port.
- * @sci_port: a handle corresponding to the SAS port for which to return the
- * SAS address.
- * @sas_address: This parameter specifies a pointer to a SAS address structure
- * into which the core will copy the SAS address for the device directly
- * attached to the port.
- *
- */
-void scic_sds_port_get_attached_sas_address(
- struct scic_sds_port *sci_port,
- struct sci_sas_address *sas_address)
-{
- struct scic_sds_phy *sci_phy;
-
- /*
- * Ensure that the phy is both part of the port and currently
- * connected to the remote end-point.
- */
- sci_phy = scic_sds_port_get_a_connected_phy(sci_port);
- if (sci_phy) {
- if (sci_phy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA) {
- scic_sds_phy_get_attached_sas_address(sci_phy,
- sas_address);
- } else {
- scic_sds_phy_get_sas_address(sci_phy, sas_address);
- sas_address->low += sci_phy->phy_index;
- }
- } else {
- sas_address->high = 0;
- sas_address->low = 0;
- }
-}
-
-/**
- * scic_sds_port_construct_dummy_rnc() - create dummy rnc for si workaround
- *
- * @sci_port: logical port on which we need to create the remote node context
- * @rni: remote node index for this remote node context.
- *
- * This routine will construct a dummy remote node context data structure
- * This structure will be posted to the hardware to work around a scheduler
- * error in the hardware.
- */
-static void scic_sds_port_construct_dummy_rnc(struct scic_sds_port *sci_port, u16 rni)
-{
- union scu_remote_node_context *rnc;
-
- rnc = &sci_port->owning_controller->remote_node_context_table[rni];
-
- memset(rnc, 0, sizeof(union scu_remote_node_context));
-
- rnc->ssp.remote_sas_address_hi = 0;
- rnc->ssp.remote_sas_address_lo = 0;
-
- rnc->ssp.remote_node_index = rni;
- rnc->ssp.remote_node_port_width = 1;
- rnc->ssp.logical_port_index = sci_port->physical_port_index;
-
- rnc->ssp.nexus_loss_timer_enable = false;
- rnc->ssp.check_bit = false;
- rnc->ssp.is_valid = true;
- rnc->ssp.is_remote_node_context = true;
- rnc->ssp.function_number = 0;
- rnc->ssp.arbitration_wait_time = 0;
-}
-
-/**
- * scic_sds_port_construct_dummy_task() - create dummy task for si workaround
- * @sci_port The logical port on which we need to create the
- * remote node context.
- * context.
- * @tci The remote node index for this remote node context.
- *
- * This routine will construct a dummy task context data structure. This
- * structure will be posted to the hardwre to work around a scheduler error
- * in the hardware.
- *
- */
-static void scic_sds_port_construct_dummy_task(struct scic_sds_port *sci_port, u16 tci)
-{
- struct scu_task_context *task_context;
-
- task_context = scic_sds_controller_get_task_context_buffer(sci_port->owning_controller, tci);
-
- memset(task_context, 0, sizeof(struct scu_task_context));
-
- task_context->abort = 0;
- task_context->priority = 0;
- task_context->initiator_request = 1;
- task_context->connection_rate = 1;
- task_context->protocol_engine_index = 0;
- task_context->logical_port_index = sci_port->physical_port_index;
- task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
- task_context->task_index = scic_sds_io_tag_get_index(tci);
- task_context->valid = SCU_TASK_CONTEXT_VALID;
- task_context->context_type = SCU_TASK_CONTEXT_TYPE;
-
- task_context->remote_node_index = sci_port->reserved_rni;
- task_context->command_code = 0;
-
- task_context->link_layer_control = 0;
- task_context->do_not_dma_ssp_good_response = 1;
- task_context->strict_ordering = 0;
- task_context->control_frame = 0;
- task_context->timeout_enable = 0;
- task_context->block_guard_enable = 0;
-
- task_context->address_modifier = 0;
-
- task_context->task_phase = 0x01;
-}
-
-static void scic_sds_port_destroy_dummy_resources(struct scic_sds_port *sci_port)
-{
- struct scic_sds_controller *scic = sci_port->owning_controller;
-
- if (sci_port->reserved_tci != SCU_DUMMY_INDEX)
- scic_controller_free_io_tag(scic, sci_port->reserved_tci);
-
- if (sci_port->reserved_rni != SCU_DUMMY_INDEX)
- scic_sds_remote_node_table_release_remote_node_index(&scic->available_remote_nodes,
- 1, sci_port->reserved_rni);
-
- sci_port->reserved_rni = SCU_DUMMY_INDEX;
- sci_port->reserved_tci = SCU_DUMMY_INDEX;
-}
-
-/**
- * This method performs initialization of the supplied port. Initialization
- * includes: - state machine initialization - member variable initialization
- * - configuring the phy_mask
- * @sci_port:
- * @transport_layer_registers:
- * @port_task_scheduler_registers:
- * @port_configuration_regsiter:
- *
- * enum sci_status SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION This value is returned
- * if the phy being added to the port
- */
-enum sci_status scic_sds_port_initialize(
- struct scic_sds_port *sci_port,
- void __iomem *port_task_scheduler_registers,
- void __iomem *port_configuration_regsiter,
- void __iomem *viit_registers)
-{
- sci_port->port_task_scheduler_registers = port_task_scheduler_registers;
- sci_port->port_pe_configuration_register = port_configuration_regsiter;
- sci_port->viit_registers = viit_registers;
-
- return SCI_SUCCESS;
-}
-
-/**
- * scic_port_get_properties() - This method simply returns the properties
- * regarding the port, such as: physical index, protocols, sas address, etc.
- * @port: this parameter specifies the port for which to retrieve the physical
- * index.
- * @properties: This parameter specifies the properties structure into which to
- * copy the requested information.
- *
- * Indicate if the user specified a valid port. SCI_SUCCESS This value is
- * returned if the specified port was valid. SCI_FAILURE_INVALID_PORT This
- * value is returned if the specified port is not valid. When this value is
- * returned, no data is copied to the properties output parameter.
- */
-enum sci_status scic_port_get_properties(
- struct scic_sds_port *port,
- struct scic_port_properties *prop)
-{
- if ((port == NULL) ||
- (port->logical_port_index == SCIC_SDS_DUMMY_PORT))
- return SCI_FAILURE_INVALID_PORT;
-
- prop->index = port->logical_port_index;
- prop->phy_mask = scic_sds_port_get_phys(port);
- scic_sds_port_get_sas_address(port, &prop->local.sas_address);
- scic_sds_port_get_protocols(port, &prop->local.protocols);
- scic_sds_port_get_attached_sas_address(port, &prop->remote.sas_address);
-
- return SCI_SUCCESS;
-}
-
-/**
- * scic_port_hard_reset() - perform port hard reset
- * @port: a handle corresponding to the SAS port to be hard reset.
- * @reset_timeout: This parameter specifies the number of milliseconds in which
- * the port reset operation should complete.
- *
- * The SCI User callback in scic_user_callbacks_t will only be called once for
- * each phy in the SAS Port at completion of the hard reset sequence. Return a
- * status indicating whether the hard reset started successfully. SCI_SUCCESS
- * This value is returned if the hard reset operation started successfully.
- */
-enum sci_status scic_port_hard_reset(
- struct scic_sds_port *port,
- u32 reset_timeout)
-{
- return port->state_handlers->reset_handler(
- port, reset_timeout);
-}
-
-/**
- * This method assigns the direct attached device ID for this port.
- *
- * @param[in] sci_port The port for which the direct attached device id is to
- * be assigned.
- * @param[in] device_id The direct attached device ID to assign to the port.
- * This will be the RNi for the device
- */
-void scic_sds_port_setup_transports(
- struct scic_sds_port *sci_port,
- u32 device_id)
-{
- u8 index;
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- if (sci_port->active_phy_mask & (1 << index))
- scic_sds_phy_setup_transport(sci_port->phy_table[index], device_id);
- }
-}
-
-/**
- *
- * @sci_port: This is the port on which the phy should be enabled.
- * @sci_phy: This is the specific phy which to enable.
- * @do_notify_user: This parameter specifies whether to inform the user (via
- * scic_cb_port_link_up()) as to the fact that a new phy as become ready.
- *
- * This function will activate the phy in the port.
- * Activation includes: - adding
- * the phy to the port - enabling the Protocol Engine in the silicon. -
- * notifying the user that the link is up. none
- */
-static void scic_sds_port_activate_phy(struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy,
- bool do_notify_user)
-{
- struct scic_sds_controller *scic = sci_port->owning_controller;
- struct isci_host *ihost = scic_to_ihost(scic);
-
- if (sci_phy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA)
- scic_sds_phy_resume(sci_phy);
-
- sci_port->active_phy_mask |= 1 << sci_phy->phy_index;
-
- scic_sds_controller_clear_invalid_phy(scic, sci_phy);
-
- if (do_notify_user == true)
- isci_port_link_up(ihost, sci_port, sci_phy);
-}
-
-void scic_sds_port_deactivate_phy(struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy,
- bool do_notify_user)
-{
- struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port);
- struct isci_port *iport = sci_port_to_iport(sci_port);
- struct isci_host *ihost = scic_to_ihost(scic);
- struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
-
- sci_port->active_phy_mask &= ~(1 << sci_phy->phy_index);
-
- sci_phy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN;
-
- /* Re-assign the phy back to the LP as if it were a narrow port */
- writel(sci_phy->phy_index,
- &sci_port->port_pe_configuration_register[sci_phy->phy_index]);
-
- if (do_notify_user == true)
- isci_port_link_down(ihost, iphy, iport);
-}
-
-/**
- *
- * @sci_port: This is the port on which the phy should be disabled.
- * @sci_phy: This is the specific phy which to disabled.
- *
- * This function will disable the phy and report that the phy is not valid for
- * this port object. None
- */
-static void scic_sds_port_invalid_link_up(struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- struct scic_sds_controller *scic = sci_port->owning_controller;
-
- /*
- * Check to see if we have alreay reported this link as bad and if
- * not go ahead and tell the SCI_USER that we have discovered an
- * invalid link.
- */
- if ((scic->invalid_phy_mask & (1 << sci_phy->phy_index)) == 0) {
- scic_sds_controller_set_invalid_phy(scic, sci_phy);
- dev_warn(&scic_to_ihost(scic)->pdev->dev, "Invalid link up!\n");
- }
-}
-
-/**
- * scic_sds_port_general_link_up_handler - phy can be assigned to port?
- * @sci_port: scic_sds_port object for which has a phy that has gone link up.
- * @sci_phy: This is the struct scic_sds_phy object that has gone link up.
- * @do_notify_user: This parameter specifies whether to inform the user (via
- * scic_cb_port_link_up()) as to the fact that a new phy as become ready.
- *
- * Determine if this phy can be assigned to this
- * port . If the phy is not a valid PHY for
- * this port then the function will notify the user. A PHY can only be
- * part of a port if it's attached SAS ADDRESS is the same as all other PHYs in
- * the same port. none
- */
-static void scic_sds_port_general_link_up_handler(struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy,
- bool do_notify_user)
-{
- struct sci_sas_address port_sas_address;
- struct sci_sas_address phy_sas_address;
-
- scic_sds_port_get_attached_sas_address(sci_port, &port_sas_address);
- scic_sds_phy_get_attached_sas_address(sci_phy, &phy_sas_address);
-
- /* If the SAS address of the new phy matches the SAS address of
- * other phys in the port OR this is the first phy in the port,
- * then activate the phy and allow it to be used for operations
- * in this port.
- */
- if ((phy_sas_address.high == port_sas_address.high &&
- phy_sas_address.low == port_sas_address.low) ||
- sci_port->active_phy_mask == 0) {
- struct sci_base_state_machine *sm = &sci_port->state_machine;
-
- scic_sds_port_activate_phy(sci_port, sci_phy, do_notify_user);
- if (sm->current_state_id == SCI_BASE_PORT_STATE_RESETTING)
- sci_base_state_machine_change_state(sm, SCI_BASE_PORT_STATE_READY);
- } else
- scic_sds_port_invalid_link_up(sci_port, sci_phy);
-}
-
-
-
-/**
- * This method returns false if the port only has a single phy object assigned.
- * If there are no phys or more than one phy then the method will return
- * true.
- * @sci_port: The port for which the wide port condition is to be checked.
- *
- * bool true Is returned if this is a wide ported port. false Is returned if
- * this is a narrow port.
- */
-static bool scic_sds_port_is_wide(struct scic_sds_port *sci_port)
-{
- u32 index;
- u32 phy_count = 0;
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- if (sci_port->phy_table[index] != NULL) {
- phy_count++;
- }
- }
-
- return phy_count != 1;
-}
-
-/**
- * This method is called by the PHY object when the link is detected. if the
- * port wants the PHY to continue on to the link up state then the port
- * layer must return true. If the port object returns false the phy object
- * must halt its attempt to go link up.
- * @sci_port: The port associated with the phy object.
- * @sci_phy: The phy object that is trying to go link up.
- *
- * true if the phy object can continue to the link up condition. true Is
- * returned if this phy can continue to the ready state. false Is returned if
- * can not continue on to the ready state. This notification is in place for
- * wide ports and direct attached phys. Since there are no wide ported SATA
- * devices this could become an invalid port configuration.
- */
-bool scic_sds_port_link_detected(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- if ((sci_port->logical_port_index != SCIC_SDS_DUMMY_PORT) &&
- (sci_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) &&
- scic_sds_port_is_wide(sci_port)) {
- scic_sds_port_invalid_link_up(sci_port, sci_phy);
-
- return false;
- }
-
- return true;
-}
-
-/**
- * This method is the entry point for the phy to inform the port that it is now
- * in a ready state
- * @sci_port:
- *
- *
- */
-void scic_sds_port_link_up(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- sci_phy->is_in_link_training = false;
-
- sci_port->state_handlers->link_up_handler(sci_port, sci_phy);
-}
-
-/**
- * This method is the entry point for the phy to inform the port that it is no
- * longer in a ready state
- * @sci_port:
- *
- *
- */
-void scic_sds_port_link_down(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- sci_port->state_handlers->link_down_handler(sci_port, sci_phy);
-}
-
-/**
- * This method is called to start an IO request on this port.
- * @sci_port:
- * @sci_dev:
- * @sci_req:
- *
- * enum sci_status
- */
-enum sci_status scic_sds_port_start_io(
- struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req)
-{
- return sci_port->state_handlers->start_io_handler(
- sci_port, sci_dev, sci_req);
-}
-
-/**
- * This method is called to complete an IO request to the port.
- * @sci_port:
- * @sci_dev:
- * @sci_req:
- *
- * enum sci_status
- */
-enum sci_status scic_sds_port_complete_io(
- struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req)
-{
- return sci_port->state_handlers->complete_io_handler(
- sci_port, sci_dev, sci_req);
-}
-
-/**
- * This method is provided to timeout requests for port operations. Mostly its
- * for the port reset operation.
- *
- *
- */
-static void scic_sds_port_timeout_handler(void *port)
-{
- struct scic_sds_port *sci_port = port;
- u32 current_state;
-
- current_state = sci_base_state_machine_get_state(
- &sci_port->state_machine);
-
- if (current_state == SCI_BASE_PORT_STATE_RESETTING) {
- /*
- * if the port is still in the resetting state then the
- * timeout fired before the reset completed.
- */
- sci_base_state_machine_change_state(
- &sci_port->state_machine,
- SCI_BASE_PORT_STATE_FAILED);
- } else if (current_state == SCI_BASE_PORT_STATE_STOPPED) {
- /*
- * if the port is stopped then the start request failed
- * In this case stay in the stopped state.
- */
- dev_err(sciport_to_dev(sci_port),
- "%s: SCIC Port 0x%p failed to stop before tiemout.\n",
- __func__,
- sci_port);
- } else if (current_state == SCI_BASE_PORT_STATE_STOPPING) {
- /*
- * if the port is still stopping then the stop has not
- * completed
- */
- isci_port_stop_complete(
- scic_sds_port_get_controller(sci_port),
- sci_port,
- SCI_FAILURE_TIMEOUT);
- } else {
- /*
- * The port is in the ready state and we have a timer
- * reporting a timeout this should not happen.
- */
- dev_err(sciport_to_dev(sci_port),
- "%s: SCIC Port 0x%p is processing a timeout operation "
- "in state %d.\n",
- __func__,
- sci_port,
- current_state);
- }
-}
-
-/* --------------------------------------------------------------------------- */
-
-/**
- * This function updates the hardwares VIIT entry for this port.
- *
- *
- */
-static void scic_sds_port_update_viit_entry(struct scic_sds_port *sci_port)
-{
- struct sci_sas_address sas_address;
-
- scic_sds_port_get_sas_address(sci_port, &sas_address);
-
- writel(sas_address.high,
- &sci_port->viit_registers->initiator_sas_address_hi);
- writel(sas_address.low,
- &sci_port->viit_registers->initiator_sas_address_lo);
-
- /* This value get cleared just in case its not already cleared */
- writel(0, &sci_port->viit_registers->reserved);
-
- /* We are required to update the status register last */
- writel(SCU_VIIT_ENTRY_ID_VIIT |
- SCU_VIIT_IPPT_INITIATOR |
- ((1 << sci_port->physical_port_index) << SCU_VIIT_ENTRY_LPVIE_SHIFT) |
- SCU_VIIT_STATUS_ALL_VALID,
- &sci_port->viit_registers->status);
-}
-
-/**
- * This method returns the maximum allowed speed for data transfers on this
- * port. This maximum allowed speed evaluates to the maximum speed of the
- * slowest phy in the port.
- * @sci_port: This parameter specifies the port for which to retrieve the
- * maximum allowed speed.
- *
- * This method returns the maximum negotiated speed of the slowest phy in the
- * port.
- */
-enum sas_linkrate scic_sds_port_get_max_allowed_speed(
- struct scic_sds_port *sci_port)
-{
- u16 index;
- enum sas_linkrate max_allowed_speed = SAS_LINK_RATE_6_0_GBPS;
- struct scic_sds_phy *phy = NULL;
-
- /*
- * Loop through all of the phys in this port and find the phy with the
- * lowest maximum link rate. */
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- phy = sci_port->phy_table[index];
- if (
- (phy != NULL)
- && (scic_sds_port_active_phy(sci_port, phy) == true)
- && (phy->max_negotiated_speed < max_allowed_speed)
- )
- max_allowed_speed = phy->max_negotiated_speed;
- }
-
- return max_allowed_speed;
-}
-
-
-/**
- * This method passes the event to core user.
- * @sci_port: The port that a BCN happens.
- * @sci_phy: The phy that receives BCN.
- *
- */
-void scic_sds_port_broadcast_change_received(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- struct scic_sds_controller *scic = sci_port->owning_controller;
- struct isci_host *ihost = scic_to_ihost(scic);
-
- /* notify the user. */
- isci_port_bc_change_received(ihost, sci_port, sci_phy);
-}
-
-
-/**
- * This API methhod enables the broadcast change notification from underneath
- * hardware.
- * @sci_port: The port that a BCN had been disabled from.
- *
- */
-void scic_port_enable_broadcast_change_notification(
- struct scic_sds_port *port)
-{
- struct scic_sds_phy *phy;
- u32 register_value;
- u8 index;
-
- /* Loop through all of the phys to enable BCN. */
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- phy = port->phy_table[index];
- if (phy != NULL) {
- register_value =
- readl(&phy->link_layer_registers->link_layer_control);
-
- /* clear the bit by writing 1. */
- writel(register_value,
- &phy->link_layer_registers->link_layer_control);
- }
- }
-}
-
-/*
- * ****************************************************************************
- * * READY SUBSTATE HANDLERS
- * **************************************************************************** */
-
-/*
- * This method is the general ready state stop handler for the struct scic_sds_port
- * object. This function will transition the ready substate machine to its
- * final state. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_port_ready_substate_stop_handler(
- struct scic_sds_port *port)
-{
- sci_base_state_machine_change_state(
- &port->state_machine,
- SCI_BASE_PORT_STATE_STOPPING
- );
-
- return SCI_SUCCESS;
-}
-
-/*
- * This method is the general ready substate complete io handler for the
- * struct scic_sds_port object. This function decrments the outstanding request count
- * for this port object. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_port_ready_substate_complete_io_handler(
- struct scic_sds_port *port,
- struct scic_sds_remote_device *device,
- struct scic_sds_request *io_request)
-{
- scic_sds_port_decrement_request_count(port);
-
- return SCI_SUCCESS;
-}
-
-static enum sci_status scic_sds_port_ready_substate_add_phy_handler(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- enum sci_status status;
-
- status = scic_sds_port_set_phy(port, phy);
-
- if (status == SCI_SUCCESS) {
- scic_sds_port_general_link_up_handler(port, phy, true);
-
- port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
-
- sci_base_state_machine_change_state(
- &port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
- );
- }
-
- return status;
-}
-
-
-static enum sci_status scic_sds_port_ready_substate_remove_phy_handler(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- enum sci_status status;
-
- status = scic_sds_port_clear_phy(port, phy);
-
- if (status == SCI_SUCCESS) {
- scic_sds_port_deactivate_phy(port, phy, true);
-
- port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
-
- sci_base_state_machine_change_state(
- &port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
- );
- }
-
- return status;
-}
-
-/*
- * ****************************************************************************
- * * READY SUBSTATE WAITING HANDLERS
- * **************************************************************************** */
-
-/**
- *
- * @sci_port: This is the struct scic_sds_port object that which has a phy that has
- * gone link up.
- * @sci_phy: This is the struct scic_sds_phy object that has gone link up.
- *
- * This method is the ready waiting substate link up handler for the
- * struct scic_sds_port object. This methos will report the link up condition for
- * this port and will transition to the ready operational substate. none
- */
-static void scic_sds_port_ready_waiting_substate_link_up_handler(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- /*
- * Since this is the first phy going link up for the port we can just enable
- * it and continue. */
- scic_sds_port_activate_phy(sci_port, sci_phy, true);
-
- sci_base_state_machine_change_state(
- &sci_port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
- );
-}
-
-/*
- * This method is the ready waiting substate start io handler for the
- * struct scic_sds_port object. The port object can not accept new requests so the
- * request is failed. enum sci_status SCI_FAILURE_INVALID_STATE
- */
-static enum sci_status scic_sds_port_ready_waiting_substate_start_io_handler(
- struct scic_sds_port *port,
- struct scic_sds_remote_device *device,
- struct scic_sds_request *io_request)
-{
- return SCI_FAILURE_INVALID_STATE;
-}
-
-/*
- * ****************************************************************************
- * * READY SUBSTATE OPERATIONAL HANDLERS
- * **************************************************************************** */
-
-/*
- * This method will casue the port to reset. enum sci_status SCI_SUCCESS
- */
-static enum
-sci_status scic_sds_port_ready_operational_substate_reset_handler(
- struct scic_sds_port *port,
- u32 timeout)
-{
- enum sci_status status = SCI_FAILURE_INVALID_PHY;
- u32 phy_index;
- struct scic_sds_phy *selected_phy = NULL;
-
-
- /* Select a phy on which we can send the hard reset request. */
- for (phy_index = 0;
- (phy_index < SCI_MAX_PHYS) && (selected_phy == NULL);
- phy_index++) {
- selected_phy = port->phy_table[phy_index];
-
- if ((selected_phy != NULL) &&
- !scic_sds_port_active_phy(port, selected_phy)) {
- /*
- * We found a phy but it is not ready select
- * different phy
- */
- selected_phy = NULL;
- }
- }
-
- /* If we have a phy then go ahead and start the reset procedure */
- if (selected_phy != NULL) {
- status = scic_sds_phy_reset(selected_phy);
-
- if (status == SCI_SUCCESS) {
- isci_timer_start(port->timer_handle, timeout);
- port->not_ready_reason =
- SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED;
-
- sci_base_state_machine_change_state(
- &port->state_machine,
- SCI_BASE_PORT_STATE_RESETTING);
- }
- }
-
- return status;
-}
-
-/**
- * scic_sds_port_ready_operational_substate_link_up_handler() -
- * @sci_port: This is the struct scic_sds_port object that which has a phy that has
- * gone link up.
- * @sci_phy: This is the struct scic_sds_phy object that has gone link up.
- *
- * This method is the ready operational substate link up handler for the
- * struct scic_sds_port object. This function notifies the SCI User that the phy has
- * gone link up. none
- */
-static void scic_sds_port_ready_operational_substate_link_up_handler(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- scic_sds_port_general_link_up_handler(sci_port, sci_phy, true);
-}
-
-/**
- * scic_sds_port_ready_operational_substate_link_down_handler() -
- * @sci_port: This is the struct scic_sds_port object that which has a phy that has
- * gone link down.
- * @sci_phy: This is the struct scic_sds_phy object that has gone link down.
- *
- * This method is the ready operational substate link down handler for the
- * struct scic_sds_port object. This function notifies the SCI User that the phy has
- * gone link down and if this is the last phy in the port the port will change
- * state to the ready waiting substate. none
- */
-static void scic_sds_port_ready_operational_substate_link_down_handler(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- scic_sds_port_deactivate_phy(sci_port, sci_phy, true);
-
- /*
- * If there are no active phys left in the port, then transition
- * the port to the WAITING state until such time as a phy goes
- * link up. */
- if (sci_port->active_phy_mask == 0)
- sci_base_state_machine_change_state(&sci_port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_WAITING);
-}
-
-/*
- * This method is the ready operational substate start io handler for the
- * struct scic_sds_port object. This function incremetns the outstanding request
- * count for this port object. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_port_ready_operational_substate_start_io_handler(
- struct scic_sds_port *port,
- struct scic_sds_remote_device *device,
- struct scic_sds_request *io_request)
-{
- port->started_request_count++;
- return SCI_SUCCESS;
-}
-
-/*
- * ****************************************************************************
- * * READY SUBSTATE OPERATIONAL HANDLERS
- * **************************************************************************** */
-
-/*
- * This is the default method for a port add phy request. It will report a
- * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE
- */
-static enum sci_status scic_sds_port_ready_configuring_substate_add_phy_handler(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- enum sci_status status;
-
- status = scic_sds_port_set_phy(port, phy);
-
- if (status == SCI_SUCCESS) {
- scic_sds_port_general_link_up_handler(port, phy, true);
-
- /*
- * Re-enter the configuring state since this may be the last phy in
- * the port. */
- sci_base_state_machine_change_state(
- &port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
- );
- }
-
- return status;
-}
-
-/*
- * This is the default method for a port remove phy request. It will report a
- * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE
- */
-static enum sci_status scic_sds_port_ready_configuring_substate_remove_phy_handler(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- enum sci_status status;
-
- status = scic_sds_port_clear_phy(port, phy);
-
- if (status == SCI_SUCCESS) {
- scic_sds_port_deactivate_phy(port, phy, true);
-
- /*
- * Re-enter the configuring state since this may be the last phy in
- * the port. */
- sci_base_state_machine_change_state(
- &port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
- );
- }
-
- return status;
-}
-
-/**
- * scic_sds_port_ready_configuring_substate_complete_io_handler() -
- * @port: This is the port that is being requested to complete the io request.
- * @device: This is the device on which the io is completing.
- *
- * This method will decrement the outstanding request count for this port. If
- * the request count goes to 0 then the port can be reprogrammed with its new
- * phy data.
- */
-static enum sci_status
-scic_sds_port_ready_configuring_substate_complete_io_handler(
- struct scic_sds_port *port,
- struct scic_sds_remote_device *device,
- struct scic_sds_request *io_request)
-{
- scic_sds_port_decrement_request_count(port);
-
- if (port->started_request_count == 0) {
- sci_base_state_machine_change_state(
- &port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
- );
- }
-
- return SCI_SUCCESS;
-}
-
-static enum sci_status default_port_handler(struct scic_sds_port *sci_port,
- const char *func)
-{
- dev_warn(sciport_to_dev(sci_port),
- "%s: in wrong state: %d\n", func,
- sci_base_state_machine_get_state(&sci_port->state_machine));
- return SCI_FAILURE_INVALID_STATE;
-}
-
-static enum sci_status
-scic_sds_port_default_start_handler(struct scic_sds_port *sci_port)
-{
- return default_port_handler(sci_port, __func__);
-}
-
-static enum sci_status
-scic_sds_port_default_stop_handler(struct scic_sds_port *sci_port)
-{
- return default_port_handler(sci_port, __func__);
-}
-
-static enum sci_status
-scic_sds_port_default_destruct_handler(struct scic_sds_port *sci_port)
-{
- return default_port_handler(sci_port, __func__);
-}
-
-static enum sci_status
-scic_sds_port_default_reset_handler(struct scic_sds_port *sci_port,
- u32 timeout)
-{
- return default_port_handler(sci_port, __func__);
-}
-
-static enum sci_status
-scic_sds_port_default_add_phy_handler(struct scic_sds_port *sci_port,
- struct scic_sds_phy *base_phy)
-{
- return default_port_handler(sci_port, __func__);
-}
-
-static enum sci_status
-scic_sds_port_default_remove_phy_handler(struct scic_sds_port *sci_port,
- struct scic_sds_phy *base_phy)
-{
- return default_port_handler(sci_port, __func__);
-}
-
-/*
- * This is the default method for a port unsolicited frame request. It will
- * report a warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE Is it even
- * possible to receive an unsolicited frame directed to a port object? It
- * seems possible if we implementing virtual functions but until then?
- */
-static enum sci_status
-scic_sds_port_default_frame_handler(struct scic_sds_port *sci_port,
- u32 frame_index)
-{
- struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port);
-
- default_port_handler(sci_port, __func__);
- scic_sds_controller_release_frame(scic, frame_index);
-
- return SCI_FAILURE_INVALID_STATE;
-}
-
-static enum sci_status scic_sds_port_default_event_handler(struct scic_sds_port *sci_port,
- u32 event_code)
-{
- return default_port_handler(sci_port, __func__);
-}
-
-static void scic_sds_port_default_link_up_handler(struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- default_port_handler(sci_port, __func__);
-}
-
-static void scic_sds_port_default_link_down_handler(struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- default_port_handler(sci_port, __func__);
-}
-
-static enum sci_status scic_sds_port_default_start_io_handler(struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req)
-{
- return default_port_handler(sci_port, __func__);
-}
-
-static enum sci_status scic_sds_port_default_complete_io_handler(struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req)
-{
- return default_port_handler(sci_port, __func__);
-}
-
-
-
-static struct scic_sds_port_state_handler
-scic_sds_port_ready_substate_handler_table[SCIC_SDS_PORT_READY_MAX_SUBSTATES] = {
- {
- /* SCIC_SDS_PORT_READY_SUBSTATE_WAITING */
- scic_sds_port_default_start_handler,
- scic_sds_port_ready_substate_stop_handler,
- scic_sds_port_default_destruct_handler,
- scic_sds_port_default_reset_handler,
- scic_sds_port_ready_substate_add_phy_handler,
- scic_sds_port_default_remove_phy_handler,
- scic_sds_port_default_frame_handler,
- scic_sds_port_default_event_handler,
- scic_sds_port_ready_waiting_substate_link_up_handler,
- scic_sds_port_default_link_down_handler,
- scic_sds_port_ready_waiting_substate_start_io_handler,
- scic_sds_port_ready_substate_complete_io_handler,
- },
-
- {
- /* SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL */
- scic_sds_port_default_start_handler,
- scic_sds_port_ready_substate_stop_handler,
- scic_sds_port_default_destruct_handler,
- scic_sds_port_ready_operational_substate_reset_handler,
- scic_sds_port_ready_substate_add_phy_handler,
- scic_sds_port_ready_substate_remove_phy_handler,
- scic_sds_port_default_frame_handler,
- scic_sds_port_default_event_handler,
- scic_sds_port_ready_operational_substate_link_up_handler,
- scic_sds_port_ready_operational_substate_link_down_handler,
- scic_sds_port_ready_operational_substate_start_io_handler,
- scic_sds_port_ready_substate_complete_io_handler,
- },
-
- {
- /* SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING */
- scic_sds_port_default_start_handler,
- scic_sds_port_ready_substate_stop_handler,
- scic_sds_port_default_destruct_handler,
- scic_sds_port_default_reset_handler,
- scic_sds_port_ready_configuring_substate_add_phy_handler,
- scic_sds_port_ready_configuring_substate_remove_phy_handler,
- scic_sds_port_default_frame_handler,
- scic_sds_port_default_event_handler,
- scic_sds_port_default_link_up_handler,
- scic_sds_port_default_link_down_handler,
- scic_sds_port_default_start_io_handler,
- scic_sds_port_ready_configuring_substate_complete_io_handler
- }
-};
-
-/**
- * scic_sds_port_set_ready_state_handlers() -
- *
- * This macro sets the port ready substate handlers.
- */
-#define scic_sds_port_set_ready_state_handlers(port, state_id) \
- scic_sds_port_set_state_handlers(\
- port, &scic_sds_port_ready_substate_handler_table[(state_id)] \
- )
-
-/*
- * ******************************************************************************
- * * PORT STATE PRIVATE METHODS
- * ****************************************************************************** */
-
-/**
- *
- * @sci_port: This is the struct scic_sds_port object to suspend.
- *
- * This method will susped the port task scheduler for this port object. none
- */
-static void
-scic_sds_port_suspend_port_task_scheduler(struct scic_sds_port *port)
-{
- u32 pts_control_value;
-
- pts_control_value = readl(&port->port_task_scheduler_registers->control);
- pts_control_value |= SCU_PTSxCR_GEN_BIT(SUSPEND);
- writel(pts_control_value, &port->port_task_scheduler_registers->control);
-}
-
-/**
- * scic_sds_port_post_dummy_request() - post dummy/workaround request
- * @sci_port: port to post task
- *
- * Prevent the hardware scheduler from posting new requests to the front
- * of the scheduler queue causing a starvation problem for currently
- * ongoing requests.
- *
- */
-static void scic_sds_port_post_dummy_request(struct scic_sds_port *sci_port)
-{
- u32 command;
- struct scu_task_context *task_context;
- struct scic_sds_controller *scic = sci_port->owning_controller;
- u16 tci = sci_port->reserved_tci;
-
- task_context = scic_sds_controller_get_task_context_buffer(scic, tci);
-
- task_context->abort = 0;
-
- command = SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
- sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
- tci;
-
- scic_sds_controller_post_request(scic, command);
-}
-
-/**
- * This routine will abort the dummy request. This will alow the hardware to
- * power down parts of the silicon to save power.
- *
- * @sci_port: The port on which the task must be aborted.
- *
- */
-static void scic_sds_port_abort_dummy_request(struct scic_sds_port *sci_port)
-{
- struct scic_sds_controller *scic = sci_port->owning_controller;
- u16 tci = sci_port->reserved_tci;
- struct scu_task_context *tc;
- u32 command;
-
- tc = scic_sds_controller_get_task_context_buffer(scic, tci);
-
- tc->abort = 1;
-
- command = SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT |
- sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
- tci;
-
- scic_sds_controller_post_request(scic, command);
-}
-
-/**
- *
- * @sci_port: This is the struct scic_sds_port object to resume.
- *
- * This method will resume the port task scheduler for this port object. none
- */
-static void
-scic_sds_port_resume_port_task_scheduler(struct scic_sds_port *port)
-{
- u32 pts_control_value;
-
- pts_control_value = readl(&port->port_task_scheduler_registers->control);
- pts_control_value &= ~SCU_PTSxCR_GEN_BIT(SUSPEND);
- writel(pts_control_value, &port->port_task_scheduler_registers->control);
-}
-
-/*
- * ******************************************************************************
- * * PORT READY SUBSTATE METHODS
- * ****************************************************************************** */
-
-/**
- *
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This method will perform the actions required by the struct scic_sds_port on
- * entering the SCIC_SDS_PORT_READY_SUBSTATE_WAITING. This function checks the
- * port for any ready phys. If there is at least one phy in a ready state then
- * the port transitions to the ready operational substate. none
- */
-static void scic_sds_port_ready_substate_waiting_enter(void *object)
-{
- struct scic_sds_port *sci_port = object;
-
- scic_sds_port_set_ready_state_handlers(
- sci_port, SCIC_SDS_PORT_READY_SUBSTATE_WAITING
- );
-
- scic_sds_port_suspend_port_task_scheduler(sci_port);
-
- sci_port->not_ready_reason = SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS;
-
- if (sci_port->active_phy_mask != 0) {
- /* At least one of the phys on the port is ready */
- sci_base_state_machine_change_state(
- &sci_port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
- );
- }
-}
-
-/**
- *
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This function will perform the actions required by the struct scic_sds_port
- * on entering the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function sets
- * the state handlers for the port object, notifies the SCI User that the port
- * is ready, and resumes port operations. none
- */
-static void scic_sds_port_ready_substate_operational_enter(void *object)
-{
- u32 index;
- struct scic_sds_port *sci_port = object;
- struct scic_sds_controller *scic = sci_port->owning_controller;
- struct isci_host *ihost = scic_to_ihost(scic);
- struct isci_port *iport = sci_port_to_iport(sci_port);
-
- scic_sds_port_set_ready_state_handlers(
- sci_port,
- SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL);
-
- isci_port_ready(ihost, iport);
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- if (sci_port->phy_table[index]) {
- writel(sci_port->physical_port_index,
- &sci_port->port_pe_configuration_register[
- sci_port->phy_table[index]->phy_index]);
- }
- }
-
- scic_sds_port_update_viit_entry(sci_port);
-
- scic_sds_port_resume_port_task_scheduler(sci_port);
-
- /*
- * Post the dummy task for the port so the hardware can schedule
- * io correctly
- */
- scic_sds_port_post_dummy_request(sci_port);
-}
-
-/**
- *
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This method will perform the actions required by the struct scic_sds_port on
- * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports
- * the port not ready and suspends the port task scheduler. none
- */
-static void scic_sds_port_ready_substate_operational_exit(void *object)
-{
- struct scic_sds_port *sci_port = object;
- struct scic_sds_controller *scic = sci_port->owning_controller;
- struct isci_host *ihost = scic_to_ihost(scic);
- struct isci_port *iport = sci_port_to_iport(sci_port);
-
- /*
- * Kill the dummy task for this port if it has not yet posted
- * the hardware will treat this as a NOP and just return abort
- * complete.
- */
- scic_sds_port_abort_dummy_request(sci_port);
-
- isci_port_not_ready(ihost, iport);
-}
-
-/*
- * ******************************************************************************
- * * PORT READY CONFIGURING METHODS
- * ****************************************************************************** */
-
-/**
- * scic_sds_port_ready_substate_configuring_enter() -
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This method will perform the actions required by the struct scic_sds_port on
- * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports
- * the port not ready and suspends the port task scheduler. none
- */
-static void scic_sds_port_ready_substate_configuring_enter(void *object)
-{
- struct scic_sds_port *sci_port = object;
- struct scic_sds_controller *scic = sci_port->owning_controller;
- struct isci_host *ihost = scic_to_ihost(scic);
- struct isci_port *iport = sci_port_to_iport(sci_port);
-
- scic_sds_port_set_ready_state_handlers(
- sci_port,
- SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING);
-
- if (sci_port->active_phy_mask == 0) {
- isci_port_not_ready(ihost, iport);
-
- sci_base_state_machine_change_state(
- &sci_port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_WAITING);
- } else if (sci_port->started_request_count == 0)
- sci_base_state_machine_change_state(
- &sci_port->ready_substate_machine,
- SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL);
-}
-
-static void scic_sds_port_ready_substate_configuring_exit(void *object)
-{
- struct scic_sds_port *sci_port = object;
-
- scic_sds_port_suspend_port_task_scheduler(sci_port);
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct sci_base_state scic_sds_port_ready_substate_table[] = {
- [SCIC_SDS_PORT_READY_SUBSTATE_WAITING] = {
- .enter_state = scic_sds_port_ready_substate_waiting_enter,
- },
- [SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL] = {
- .enter_state = scic_sds_port_ready_substate_operational_enter,
- .exit_state = scic_sds_port_ready_substate_operational_exit
- },
- [SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING] = {
- .enter_state = scic_sds_port_ready_substate_configuring_enter,
- .exit_state = scic_sds_port_ready_substate_configuring_exit
- },
-};
-
-/**
- *
- * @port: This is the struct scic_sds_port object on which the io request count will
- * be decremented.
- * @device: This is the struct scic_sds_remote_device object to which the io request
- * is being directed. This parameter is not required to complete this
- * operation.
- * @io_request: This is the request that is being completed on this port
- * object. This parameter is not required to complete this operation.
- *
- * This is a general complete io request handler for the struct scic_sds_port object.
- * enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_port_general_complete_io_handler(
- struct scic_sds_port *port,
- struct scic_sds_remote_device *device,
- struct scic_sds_request *io_request)
-{
- scic_sds_port_decrement_request_count(port);
-
- return SCI_SUCCESS;
-}
-
-/**
- * scic_sds_port_stopped_state_start_handler() - stop a port from "started"
- *
- * @port: This is the struct scic_sds_port object which is cast into a
- * struct scic_sds_port object.
- *
- * This function takes the struct scic_sds_port from a stopped state and
- * attempts to start it. To start a port it must have no assiged devices and
- * it must have at least one phy assigned to it. If those conditions are
- * met then the port can transition to the ready state.
- * enum sci_status
- * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION
- * This struct scic_sds_port object could not be started because the port
- * configuration is not valid.
- * SCI_SUCCESS
- * the start request is successful and the struct scic_sds_port object
- * has transitioned to the SCI_BASE_PORT_STATE_READY.
- */
-static enum sci_status
-scic_sds_port_stopped_state_start_handler(struct scic_sds_port *sci_port)
-{
- struct scic_sds_controller *scic = sci_port->owning_controller;
- struct isci_host *ihost = scic_to_ihost(scic);
- enum sci_status status = SCI_SUCCESS;
- u32 phy_mask;
-
- if (sci_port->assigned_device_count > 0) {
- /*
- * @todo This is a start failure operation because
- * there are still devices assigned to this port.
- * There must be no devices assigned to a port on a
- * start operation.
- */
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
- }
-
- sci_port->timer_handle =
- isci_timer_create(ihost,
- sci_port,
- scic_sds_port_timeout_handler);
-
- if (!sci_port->timer_handle)
- return SCI_FAILURE_INSUFFICIENT_RESOURCES;
-
- if (sci_port->reserved_rni == SCU_DUMMY_INDEX) {
- u16 rni = scic_sds_remote_node_table_allocate_remote_node(
- &scic->available_remote_nodes, 1);
-
- if (rni != SCU_DUMMY_INDEX)
- scic_sds_port_construct_dummy_rnc(sci_port, rni);
- else
- status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
- sci_port->reserved_rni = rni;
- }
-
- if (sci_port->reserved_tci == SCU_DUMMY_INDEX) {
- /* Allocate a TCI and remove the sequence nibble */
- u16 tci = scic_controller_allocate_io_tag(scic);
-
- if (tci != SCU_DUMMY_INDEX)
- scic_sds_port_construct_dummy_task(sci_port, tci);
- else
- status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
- sci_port->reserved_tci = tci;
- }
-
- if (status == SCI_SUCCESS) {
- phy_mask = scic_sds_port_get_phys(sci_port);
-
- /*
- * There are one or more phys assigned to this port. Make sure
- * the port's phy mask is in fact legal and supported by the
- * silicon.
- */
- if (scic_sds_port_is_phy_mask_valid(sci_port, phy_mask) == true) {
- sci_base_state_machine_change_state(
- &sci_port->state_machine,
- SCI_BASE_PORT_STATE_READY);
-
- return SCI_SUCCESS;
- } else
- status = SCI_FAILURE;
- }
-
- if (status != SCI_SUCCESS)
- scic_sds_port_destroy_dummy_resources(sci_port);
-
- return status;
-}
-
-/*
- * This method takes the struct scic_sds_port that is in a stopped state and handles a
- * stop request. This function takes no action. enum sci_status SCI_SUCCESS the
- * stop request is successful as the struct scic_sds_port object is already stopped.
- */
-static enum sci_status scic_sds_port_stopped_state_stop_handler(
- struct scic_sds_port *port)
-{
- /* We are already stopped so there is nothing to do here */
- return SCI_SUCCESS;
-}
-
-/*
- * This method takes the struct scic_sds_port that is in a stopped state and handles
- * the destruct request. The stopped state is the only state in which the
- * struct scic_sds_port can be destroyed. This function causes the port object to
- * transition to the SCI_BASE_PORT_STATE_FINAL. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_port_stopped_state_destruct_handler(
- struct scic_sds_port *port)
-{
- sci_base_state_machine_stop(&port->state_machine);
-
- return SCI_SUCCESS;
-}
-
-/*
- * This method takes the struct scic_sds_port that is in a stopped state and handles
- * the add phy request. In MPC mode the only time a phy can be added to a port
- * is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status
- * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not
- * be added to the port. SCI_SUCCESS if the phy is added to the port.
- */
-static enum sci_status scic_sds_port_stopped_state_add_phy_handler(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- struct sci_sas_address port_sas_address;
-
- /* Read the port assigned SAS Address if there is one */
- scic_sds_port_get_sas_address(port, &port_sas_address);
-
- if (port_sas_address.high != 0 && port_sas_address.low != 0) {
- struct sci_sas_address phy_sas_address;
-
- /*
- * Make sure that the PHY SAS Address matches the SAS Address
- * for this port. */
- scic_sds_phy_get_sas_address(phy, &phy_sas_address);
-
- if (
- (port_sas_address.high != phy_sas_address.high)
- || (port_sas_address.low != phy_sas_address.low)
- ) {
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
- }
- }
-
- return scic_sds_port_set_phy(port, phy);
-}
-
-/*
- * This method takes the struct scic_sds_port that is in a stopped state and handles
- * the remove phy request. In MPC mode the only time a phy can be removed from
- * a port is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status
- * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not
- * be added to the port. SCI_SUCCESS if the phy is added to the port.
- */
-static enum sci_status scic_sds_port_stopped_state_remove_phy_handler(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- return scic_sds_port_clear_phy(port, phy);
-}
-
-/*
- * ****************************************************************************
- * * READY STATE HANDLERS
- * **************************************************************************** */
-
-/*
- * ****************************************************************************
- * * RESETTING STATE HANDLERS
- * **************************************************************************** */
-
-/*
- * ****************************************************************************
- * * STOPPING STATE HANDLERS
- * **************************************************************************** */
-
-/*
- * This method takes the struct scic_sds_port that is in a stopping state and handles
- * the complete io request. Should the request count reach 0 then the port
- * object will transition to the stopped state. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_port_stopping_state_complete_io_handler(
- struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *device,
- struct scic_sds_request *io_request)
-{
- scic_sds_port_decrement_request_count(sci_port);
-
- if (sci_port->started_request_count == 0) {
- sci_base_state_machine_change_state(&sci_port->state_machine,
- SCI_BASE_PORT_STATE_STOPPED);
- }
-
- return SCI_SUCCESS;
-}
-
-/*
- * ****************************************************************************
- * * RESETTING STATE HANDLERS
- * **************************************************************************** */
-
-/**
- *
- * @port: This is the port object which is being requested to stop.
- *
- * This method will stop a failed port. This causes a transition to the
- * stopping state. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_port_reset_state_stop_handler(
- struct scic_sds_port *port)
-{
- sci_base_state_machine_change_state(
- &port->state_machine,
- SCI_BASE_PORT_STATE_STOPPING
- );
-
- return SCI_SUCCESS;
-}
-
-/*
- * This method will transition a failed port to its ready state. The port
- * failed because a hard reset request timed out but at some time later one or
- * more phys in the port became ready. enum sci_status SCI_SUCCESS
- */
-static void scic_sds_port_reset_state_link_up_handler(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- /*
- * / @todo We should make sure that the phy that has gone link up is the same
- * / one on which we sent the reset. It is possible that the phy on
- * / which we sent the reset is not the one that has gone link up and we
- * / want to make sure that phy being reset comes back. Consider the
- * / case where a reset is sent but before the hardware processes the
- * / reset it get a link up on the port because of a hot plug event.
- * / because of the reset request this phy will go link down almost
- * / immediately. */
-
- /*
- * In the resetting state we don't notify the user regarding
- * link up and link down notifications. */
- scic_sds_port_general_link_up_handler(port, phy, false);
-}
-
-/*
- * This method process link down notifications that occur during a port reset
- * operation. Link downs can occur during the reset operation. enum sci_status
- * SCI_SUCCESS
- */
-static void scic_sds_port_reset_state_link_down_handler(
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- /*
- * In the resetting state we don't notify the user regarding
- * link up and link down notifications. */
- scic_sds_port_deactivate_phy(port, phy, false);
-}
-
-static struct scic_sds_port_state_handler
-scic_sds_port_state_handler_table[SCI_BASE_PORT_MAX_STATES] =
-{
- /* SCI_BASE_PORT_STATE_STOPPED */
- {
- scic_sds_port_stopped_state_start_handler,
- scic_sds_port_stopped_state_stop_handler,
- scic_sds_port_stopped_state_destruct_handler,
- scic_sds_port_default_reset_handler,
- scic_sds_port_stopped_state_add_phy_handler,
- scic_sds_port_stopped_state_remove_phy_handler,
- scic_sds_port_default_frame_handler,
- scic_sds_port_default_event_handler,
- scic_sds_port_default_link_up_handler,
- scic_sds_port_default_link_down_handler,
- scic_sds_port_default_start_io_handler,
- scic_sds_port_default_complete_io_handler
- },
- /* SCI_BASE_PORT_STATE_STOPPING */
- {
- scic_sds_port_default_start_handler,
- scic_sds_port_default_stop_handler,
- scic_sds_port_default_destruct_handler,
- scic_sds_port_default_reset_handler,
- scic_sds_port_default_add_phy_handler,
- scic_sds_port_default_remove_phy_handler,
- scic_sds_port_default_frame_handler,
- scic_sds_port_default_event_handler,
- scic_sds_port_default_link_up_handler,
- scic_sds_port_default_link_down_handler,
- scic_sds_port_default_start_io_handler,
- scic_sds_port_stopping_state_complete_io_handler
- },
- /* SCI_BASE_PORT_STATE_READY */
- {
- scic_sds_port_default_start_handler,
- scic_sds_port_default_stop_handler,
- scic_sds_port_default_destruct_handler,
- scic_sds_port_default_reset_handler,
- scic_sds_port_default_add_phy_handler,
- scic_sds_port_default_remove_phy_handler,
- scic_sds_port_default_frame_handler,
- scic_sds_port_default_event_handler,
- scic_sds_port_default_link_up_handler,
- scic_sds_port_default_link_down_handler,
- scic_sds_port_default_start_io_handler,
- scic_sds_port_general_complete_io_handler
- },
- /* SCI_BASE_PORT_STATE_RESETTING */
- {
- scic_sds_port_default_start_handler,
- scic_sds_port_reset_state_stop_handler,
- scic_sds_port_default_destruct_handler,
- scic_sds_port_default_reset_handler,
- scic_sds_port_default_add_phy_handler,
- scic_sds_port_default_remove_phy_handler,
- scic_sds_port_default_frame_handler,
- scic_sds_port_default_event_handler,
- scic_sds_port_reset_state_link_up_handler,
- scic_sds_port_reset_state_link_down_handler,
- scic_sds_port_default_start_io_handler,
- scic_sds_port_general_complete_io_handler
- },
- /* SCI_BASE_PORT_STATE_FAILED */
- {
- scic_sds_port_default_start_handler,
- scic_sds_port_default_stop_handler,
- scic_sds_port_default_destruct_handler,
- scic_sds_port_default_reset_handler,
- scic_sds_port_default_add_phy_handler,
- scic_sds_port_default_remove_phy_handler,
- scic_sds_port_default_frame_handler,
- scic_sds_port_default_event_handler,
- scic_sds_port_default_link_up_handler,
- scic_sds_port_default_link_down_handler,
- scic_sds_port_default_start_io_handler,
- scic_sds_port_general_complete_io_handler
- }
-};
-
-/*
- * ******************************************************************************
- * * PORT STATE PRIVATE METHODS
- * ****************************************************************************** */
-
-/**
- *
- * @sci_port: This is the port object which to suspend.
- *
- * This method will enable the SCU Port Task Scheduler for this port object but
- * will leave the port task scheduler in a suspended state. none
- */
-static void
-scic_sds_port_enable_port_task_scheduler(struct scic_sds_port *port)
-{
- u32 pts_control_value;
-
- pts_control_value = readl(&port->port_task_scheduler_registers->control);
- pts_control_value |= SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND);
- writel(pts_control_value, &port->port_task_scheduler_registers->control);
-}
-
-/**
- *
- * @sci_port: This is the port object which to resume.
- *
- * This method will disable the SCU port task scheduler for this port object.
- * none
- */
-static void
-scic_sds_port_disable_port_task_scheduler(struct scic_sds_port *port)
-{
- u32 pts_control_value;
-
- pts_control_value = readl(&port->port_task_scheduler_registers->control);
- pts_control_value &=
- ~(SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND));
- writel(pts_control_value, &port->port_task_scheduler_registers->control);
-}
-
-static void scic_sds_port_post_dummy_remote_node(struct scic_sds_port *sci_port)
-{
- struct scic_sds_controller *scic = sci_port->owning_controller;
- u8 phys_index = sci_port->physical_port_index;
- union scu_remote_node_context *rnc;
- u16 rni = sci_port->reserved_rni;
- u32 command;
-
- rnc = &scic->remote_node_context_table[rni];
- rnc->ssp.is_valid = true;
-
- command = SCU_CONTEXT_COMMAND_POST_RNC_32 |
- phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
-
- scic_sds_controller_post_request(scic, command);
-
- /* ensure hardware has seen the post rnc command and give it
- * ample time to act before sending the suspend
- */
- readl(&scic->smu_registers->interrupt_status); /* flush */
- udelay(10);
-
- command = SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX |
- phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
-
- scic_sds_controller_post_request(scic, command);
-}
-
-static void scic_sds_port_invalidate_dummy_remote_node(struct scic_sds_port *sci_port)
-{
- struct scic_sds_controller *scic = sci_port->owning_controller;
- u8 phys_index = sci_port->physical_port_index;
- union scu_remote_node_context *rnc;
- u16 rni = sci_port->reserved_rni;
- u32 command;
-
- rnc = &scic->remote_node_context_table[rni];
-
- rnc->ssp.is_valid = false;
-
- /* ensure the preceding tc abort request has reached the
- * controller and give it ample time to act before posting the rnc
- * invalidate
- */
- readl(&scic->smu_registers->interrupt_status); /* flush */
- udelay(10);
-
- command = SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE |
- phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
-
- scic_sds_controller_post_request(scic, command);
-}
-
-/*
- * ******************************************************************************
- * * PORT STATE METHODS
- * ****************************************************************************** */
-
-/**
- *
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This method will perform the actions required by the struct scic_sds_port on
- * entering the SCI_BASE_PORT_STATE_STOPPED. This function sets the stopped
- * state handlers for the struct scic_sds_port object and disables the port task
- * scheduler in the hardware. none
- */
-static void scic_sds_port_stopped_state_enter(void *object)
-{
- struct scic_sds_port *sci_port = object;
-
- scic_sds_port_set_base_state_handlers(
- sci_port, SCI_BASE_PORT_STATE_STOPPED
- );
-
- if (
- SCI_BASE_PORT_STATE_STOPPING
- == sci_port->state_machine.previous_state_id
- ) {
- /*
- * If we enter this state becasuse of a request to stop
- * the port then we want to disable the hardwares port
- * task scheduler. */
- scic_sds_port_disable_port_task_scheduler(sci_port);
- }
-}
-
-/**
- *
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This method will perform the actions required by the struct scic_sds_port on
- * exiting the SCI_BASE_STATE_STOPPED. This function enables the SCU hardware
- * port task scheduler. none
- */
-static void scic_sds_port_stopped_state_exit(void *object)
-{
- struct scic_sds_port *sci_port = object;
-
- /* Enable and suspend the port task scheduler */
- scic_sds_port_enable_port_task_scheduler(sci_port);
-}
-
-/**
- * scic_sds_port_ready_state_enter -
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This method will perform the actions required by the struct scic_sds_port on
- * entering the SCI_BASE_PORT_STATE_READY. This function sets the ready state
- * handlers for the struct scic_sds_port object, reports the port object as
- * not ready and starts the ready substate machine. none
- */
-static void scic_sds_port_ready_state_enter(void *object)
-{
- struct scic_sds_port *sci_port = object;
- struct scic_sds_controller *scic = sci_port->owning_controller;
- struct isci_host *ihost = scic_to_ihost(scic);
- struct isci_port *iport = sci_port_to_iport(sci_port);
- u32 prev_state;
-
- /* Put the ready state handlers in place though they will not be there long */
- scic_sds_port_set_base_state_handlers(sci_port, SCI_BASE_PORT_STATE_READY);
-
- prev_state = sci_port->state_machine.previous_state_id;
- if (prev_state == SCI_BASE_PORT_STATE_RESETTING)
- isci_port_hard_reset_complete(iport, SCI_SUCCESS);
- else
- isci_port_not_ready(ihost, iport);
-
- /* Post and suspend the dummy remote node context for this port. */
- scic_sds_port_post_dummy_remote_node(sci_port);
-
- /* Start the ready substate machine */
- sci_base_state_machine_start(&sci_port->ready_substate_machine);
-}
-
-static void scic_sds_port_ready_state_exit(void *object)
-{
- struct scic_sds_port *sci_port = object;
-
- sci_base_state_machine_stop(&sci_port->ready_substate_machine);
- scic_sds_port_invalidate_dummy_remote_node(sci_port);
-}
-
-/**
- *
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This method will perform the actions required by the struct scic_sds_port on
- * entering the SCI_BASE_PORT_STATE_RESETTING. This function sets the resetting
- * state handlers for the struct scic_sds_port object. none
- */
-static void scic_sds_port_resetting_state_enter(void *object)
-{
- struct scic_sds_port *sci_port = object;
-
- scic_sds_port_set_base_state_handlers(
- sci_port, SCI_BASE_PORT_STATE_RESETTING
- );
-}
-
-/**
- *
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This function will perform the actions required by the
- * struct scic_sds_port on
- * exiting the SCI_BASE_STATE_RESETTING. This function does nothing. none
- */
-static inline void scic_sds_port_resetting_state_exit(void *object)
-{
- struct scic_sds_port *sci_port = object;
-
- isci_timer_stop(sci_port->timer_handle);
-}
-
-/**
- *
- * @object: This is the void object which is cast to a
- * struct scic_sds_port object.
- *
- * This method will perform the actions required by the struct scic_sds_port on
- * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping
- * state handlers for the struct scic_sds_port object. none
- */
-static void scic_sds_port_stopping_state_enter(void *object)
-{
- struct scic_sds_port *sci_port = object;
-
- scic_sds_port_set_base_state_handlers(
- sci_port, SCI_BASE_PORT_STATE_STOPPING
- );
-}
-
-/**
- *
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This function will perform the actions required by the
- * struct scic_sds_port on
- * exiting the SCI_BASE_STATE_STOPPING. This function does nothing. none
- */
-static inline void
-scic_sds_port_stopping_state_exit(void *object)
-{
- struct scic_sds_port *sci_port = object;
-
- isci_timer_stop(sci_port->timer_handle);
-
- scic_sds_port_destroy_dummy_resources(sci_port);
-}
-
-/**
- *
- * @object: This is the object which is cast to a struct scic_sds_port object.
- *
- * This function will perform the actions required by the
- * struct scic_sds_port on
- * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping
- * state handlers for the struct scic_sds_port object. none
- */
-static void scic_sds_port_failed_state_enter(void *object)
-{
- struct scic_sds_port *sci_port = object;
- struct isci_port *iport = sci_port_to_iport(sci_port);
-
- scic_sds_port_set_base_state_handlers(sci_port,
- SCI_BASE_PORT_STATE_FAILED);
-
- isci_port_hard_reset_complete(iport, SCI_FAILURE_TIMEOUT);
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct sci_base_state scic_sds_port_state_table[] = {
- [SCI_BASE_PORT_STATE_STOPPED] = {
- .enter_state = scic_sds_port_stopped_state_enter,
- .exit_state = scic_sds_port_stopped_state_exit
- },
- [SCI_BASE_PORT_STATE_STOPPING] = {
- .enter_state = scic_sds_port_stopping_state_enter,
- .exit_state = scic_sds_port_stopping_state_exit
- },
- [SCI_BASE_PORT_STATE_READY] = {
- .enter_state = scic_sds_port_ready_state_enter,
- .exit_state = scic_sds_port_ready_state_exit
- },
- [SCI_BASE_PORT_STATE_RESETTING] = {
- .enter_state = scic_sds_port_resetting_state_enter,
- .exit_state = scic_sds_port_resetting_state_exit
- },
- [SCI_BASE_PORT_STATE_FAILED] = {
- .enter_state = scic_sds_port_failed_state_enter,
- }
-};
-
-void scic_sds_port_construct(struct scic_sds_port *sci_port, u8 index,
- struct scic_sds_controller *scic)
-{
- sci_base_state_machine_construct(&sci_port->state_machine,
- sci_port,
- scic_sds_port_state_table,
- SCI_BASE_PORT_STATE_STOPPED);
-
- sci_base_state_machine_start(&sci_port->state_machine);
-
- sci_base_state_machine_construct(&sci_port->ready_substate_machine,
- sci_port,
- scic_sds_port_ready_substate_table,
- SCIC_SDS_PORT_READY_SUBSTATE_WAITING);
-
- sci_port->logical_port_index = SCIC_SDS_DUMMY_PORT;
- sci_port->physical_port_index = index;
- sci_port->active_phy_mask = 0;
-
- sci_port->owning_controller = scic;
-
- sci_port->started_request_count = 0;
- sci_port->assigned_device_count = 0;
-
- sci_port->reserved_rni = SCU_DUMMY_INDEX;
- sci_port->reserved_tci = SCU_DUMMY_INDEX;
-
- sci_port->timer_handle = NULL;
- sci_port->port_task_scheduler_registers = NULL;
-
- for (index = 0; index < SCI_MAX_PHYS; index++)
- sci_port->phy_table[index] = NULL;
-}
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_SDS_PORT_H_
-#define _SCIC_SDS_PORT_H_
-
-#include <linux/kernel.h>
-#include "isci.h"
-#include "sas.h"
-#include "registers.h"
-#include "state_machine.h"
-
-struct scic_sds_controller;
-struct scic_sds_phy;
-struct scic_sds_remote_device;
-struct scic_sds_request;
-
-#define SCIC_SDS_DUMMY_PORT 0xFF
-
-/**
- * enum SCIC_SDS_PORT_READY_SUBSTATES -
- *
- * This enumeration depicts all of the states for the core port ready substate
- * machine.
- */
-enum scic_sds_port_ready_substates {
- /**
- * The substate where the port is started and ready but has no
- * active phys.
- */
- SCIC_SDS_PORT_READY_SUBSTATE_WAITING,
-
- /**
- * The substate where the port is started and ready and there is
- * at least one phy operational.
- */
- SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL,
-
- /**
- * The substate where the port is started and there was an
- * add/remove phy event. This state is only used in Automatic
- * Port Configuration Mode (APC)
- */
- SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING,
-
- SCIC_SDS_PORT_READY_MAX_SUBSTATES
-};
-
-/**
- * enum scic_sds_port_states - This enumeration depicts all the states for the
- * common port state machine.
- *
- *
- */
-enum scic_sds_port_states {
- /**
- * This state indicates that the port has successfully been stopped.
- * In this state no new IO operations are permitted.
- * This state is entered from the STOPPING state.
- */
- SCI_BASE_PORT_STATE_STOPPED,
-
- /**
- * This state indicates that the port is in the process of stopping.
- * In this state no new IO operations are permitted, but existing IO
- * operations are allowed to complete.
- * This state is entered from the READY state.
- */
- SCI_BASE_PORT_STATE_STOPPING,
-
- /**
- * This state indicates the port is now ready. Thus, the user is
- * able to perform IO operations on this port.
- * This state is entered from the STARTING state.
- */
- SCI_BASE_PORT_STATE_READY,
-
- /**
- * This state indicates the port is in the process of performing a hard
- * reset. Thus, the user is unable to perform IO operations on this
- * port.
- * This state is entered from the READY state.
- */
- SCI_BASE_PORT_STATE_RESETTING,
-
- /**
- * This state indicates the port has failed a reset request. This state
- * is entered when a port reset request times out.
- * This state is entered from the RESETTING state.
- */
- SCI_BASE_PORT_STATE_FAILED,
-
- SCI_BASE_PORT_MAX_STATES
-
-};
-
-/**
- * struct scic_sds_port
- *
- * The core port object provides the the abstraction for an SCU port.
- */
-struct scic_sds_port {
-
- /**
- * This field contains the information for the base port state machine.
- */
- struct sci_base_state_machine state_machine;
-
- /**
- * This field is the port index that is reported to the SCI USER.
- * This allows the actual hardware physical port to change without
- * the SCI USER getting a different answer for the get port index.
- */
- u8 logical_port_index;
-
- /**
- * This field is the port index used to program the SCU hardware.
- */
- u8 physical_port_index;
-
- /**
- * This field contains the active phy mask for the port.
- * This mask is used in conjunction with the phy state to determine
- * which phy to select for some port operations.
- */
- u8 active_phy_mask;
-
- u16 reserved_rni;
- u16 reserved_tci;
-
- /**
- * This field contains the count of the io requests started on this port
- * object. It is used to control controller shutdown.
- */
- u32 started_request_count;
-
- /**
- * This field contains the number of devices assigned to this port.
- * It is used to control port start requests.
- */
- u32 assigned_device_count;
-
- /**
- * This field contains the reason for the port not going ready. It is
- * assigned in the state handlers and used in the state transition.
- */
- u32 not_ready_reason;
-
- /**
- * This field is the table of phys assigned to the port.
- */
- struct scic_sds_phy *phy_table[SCI_MAX_PHYS];
-
- /**
- * This field is a pointer back to the controller that owns this
- * port object.
- */
- struct scic_sds_controller *owning_controller;
-
- /**
- * This field contains the port start/stop timer handle.
- */
- void *timer_handle;
-
- /**
- * This field points to the current set of state handlers for this port
- * object. These state handlers are assigned at each enter state of
- * the state machine.
- */
- struct scic_sds_port_state_handler *state_handlers;
-
- /**
- * This field is the ready substate machine for the port.
- */
- struct sci_base_state_machine ready_substate_machine;
-
- /* / Memory mapped hardware register space */
-
- /**
- * This field is the pointer to the port task scheduler registers
- * for the SCU hardware.
- */
- struct scu_port_task_scheduler_registers __iomem
- *port_task_scheduler_registers;
-
- /**
- * This field is identical for all port objects and points to the port
- * task scheduler group PE configuration registers.
- * It is used to assign PEs to a port.
- */
- u32 __iomem *port_pe_configuration_register;
-
- /**
- * This field is the VIIT register space for ths port object.
- */
- struct scu_viit_entry __iomem *viit_registers;
-
-};
-
-typedef enum sci_status (*scic_sds_port_handler_t)(struct scic_sds_port *);
-
-typedef enum sci_status (*scic_sds_port_phy_handler_t)(struct scic_sds_port *,
- struct scic_sds_phy *);
-
-typedef enum sci_status (*scic_sds_port_reset_handler_t)(struct scic_sds_port *,
- u32 timeout);
-
-typedef enum sci_status (*scic_sds_port_event_handler_t)(struct scic_sds_port *, u32);
-
-typedef enum sci_status (*scic_sds_port_frame_handler_t)(struct scic_sds_port *, u32);
-
-typedef void (*scic_sds_port_link_handler_t)(struct scic_sds_port *, struct scic_sds_phy *);
-
-typedef enum sci_status (*scic_sds_port_io_request_handler_t)(struct scic_sds_port *,
- struct scic_sds_remote_device *,
- struct scic_sds_request *);
-
-struct scic_sds_port_state_handler {
- /**
- * The start_handler specifies the method invoked when a user
- * attempts to start a port.
- */
- scic_sds_port_handler_t start_handler;
-
- /**
- * The stop_handler specifies the method invoked when a user
- * attempts to stop a port.
- */
- scic_sds_port_handler_t stop_handler;
-
- /**
- * The destruct_handler specifies the method invoked when attempting to
- * destruct a port.
- */
- scic_sds_port_handler_t destruct_handler;
-
- /**
- * The reset_handler specifies the method invoked when a user
- * attempts to hard reset a port.
- */
- scic_sds_port_reset_handler_t reset_handler;
-
- /**
- * The add_phy_handler specifies the method invoked when a user
- * attempts to add another phy into the port.
- */
- scic_sds_port_phy_handler_t add_phy_handler;
-
- /**
- * The remove_phy_handler specifies the method invoked when a user
- * attempts to remove a phy from the port.
- */
- scic_sds_port_phy_handler_t remove_phy_handler;
-
- scic_sds_port_frame_handler_t frame_handler;
- scic_sds_port_event_handler_t event_handler;
-
- scic_sds_port_link_handler_t link_up_handler;
- scic_sds_port_link_handler_t link_down_handler;
-
- scic_sds_port_io_request_handler_t start_io_handler;
- scic_sds_port_io_request_handler_t complete_io_handler;
-
-};
-
-/**
- * scic_sds_port_get_controller() -
- *
- * Helper macro to get the owning controller of this port
- */
-#define scic_sds_port_get_controller(this_port) \
- ((this_port)->owning_controller)
-
-/**
- * scic_sds_port_set_base_state_handlers() -
- *
- * This macro will change the state handlers to those of the specified state id
- */
-#define scic_sds_port_set_base_state_handlers(this_port, state_id) \
- scic_sds_port_set_state_handlers(\
- (this_port), &scic_sds_port_state_handler_table[(state_id)])
-
-/**
- * scic_sds_port_set_state_handlers() -
- *
- * Helper macro to set the port object state handlers
- */
-#define scic_sds_port_set_state_handlers(this_port, handlers) \
- ((this_port)->state_handlers = (handlers))
-
-/**
- * scic_sds_port_get_index() -
- *
- * This macro returns the physical port index for this port object
- */
-#define scic_sds_port_get_index(this_port) \
- ((this_port)->physical_port_index)
-
-
-static inline void scic_sds_port_decrement_request_count(struct scic_sds_port *sci_port)
-{
- if (WARN_ONCE(sci_port->started_request_count == 0,
- "%s: tried to decrement started_request_count past 0!?",
- __func__))
- /* pass */;
- else
- sci_port->started_request_count--;
-}
-
-#define scic_sds_port_active_phy(port, phy) \
- (((port)->active_phy_mask & (1 << (phy)->phy_index)) != 0)
-
-void scic_sds_port_construct(
- struct scic_sds_port *sci_port,
- u8 port_index,
- struct scic_sds_controller *scic);
-
-enum sci_status scic_sds_port_initialize(
- struct scic_sds_port *sci_port,
- void __iomem *port_task_scheduler_registers,
- void __iomem *port_configuration_regsiter,
- void __iomem *viit_registers);
-
-enum sci_status scic_sds_port_add_phy(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy);
-
-enum sci_status scic_sds_port_remove_phy(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy);
-
-void scic_sds_port_setup_transports(
- struct scic_sds_port *sci_port,
- u32 device_id);
-
-
-void scic_sds_port_deactivate_phy(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy,
- bool do_notify_user);
-
-bool scic_sds_port_link_detected(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy);
-
-void scic_sds_port_link_up(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy);
-
-void scic_sds_port_link_down(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy);
-
-enum sci_status scic_sds_port_start_io(
- struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_port_complete_io(
- struct scic_sds_port *sci_port,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *sci_req);
-
-enum sas_linkrate scic_sds_port_get_max_allowed_speed(
- struct scic_sds_port *sci_port);
-
-void scic_sds_port_broadcast_change_received(
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy);
-
-bool scic_sds_port_is_valid_phy_assignment(
- struct scic_sds_port *sci_port,
- u32 phy_index);
-
-void scic_sds_port_get_sas_address(
- struct scic_sds_port *sci_port,
- struct sci_sas_address *sas_address);
-
-void scic_sds_port_get_attached_sas_address(
- struct scic_sds_port *sci_port,
- struct sci_sas_address *sas_address);
-
-#endif /* _SCIC_SDS_PORT_H_ */
+++ /dev/null
-/*
- * 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.
- */
-
-#include "host.h"
-#include "scic_sds_port_configuration_agent.h"
-#include "timers.h"
-
-#define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT (10)
-#define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT (10)
-#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION (100)
-
-enum SCIC_SDS_APC_ACTIVITY {
- SCIC_SDS_APC_SKIP_PHY,
- SCIC_SDS_APC_ADD_PHY,
- SCIC_SDS_APC_START_TIMER,
-
- SCIC_SDS_APC_ACTIVITY_MAX
-};
-
-/*
- * ******************************************************************************
- * General port configuration agent routines
- * ****************************************************************************** */
-
-/**
- *
- * @address_one: A SAS Address to be compared.
- * @address_two: A SAS Address to be compared.
- *
- * Compare the two SAS Address and if SAS Address One is greater than SAS
- * Address Two then return > 0 else if SAS Address One is less than SAS Address
- * Two return < 0 Otherwise they are the same return 0 A signed value of x > 0
- * > y where x is returned for Address One > Address Two y is returned for
- * Address One < Address Two 0 is returned ofr Address One = Address Two
- */
-static s32 sci_sas_address_compare(
- struct sci_sas_address address_one,
- struct sci_sas_address address_two)
-{
- if (address_one.high > address_two.high) {
- return 1;
- } else if (address_one.high < address_two.high) {
- return -1;
- } else if (address_one.low > address_two.low) {
- return 1;
- } else if (address_one.low < address_two.low) {
- return -1;
- }
-
- /* The two SAS Address must be identical */
- return 0;
-}
-
-/**
- *
- * @controller: The controller object used for the port search.
- * @phy: The phy object to match.
- *
- * This routine will find a matching port for the phy. This means that the
- * port and phy both have the same broadcast sas address and same received sas
- * address. The port address or the NULL if there is no matching
- * port. port address if the port can be found to match the phy.
- * NULL if there is no matching port for the phy.
- */
-static struct scic_sds_port *scic_sds_port_configuration_agent_find_port(
- struct scic_sds_controller *scic,
- struct scic_sds_phy *phy)
-{
- u8 i;
- struct sci_sas_address port_sas_address;
- struct sci_sas_address port_attached_device_address;
- struct sci_sas_address phy_sas_address;
- struct sci_sas_address phy_attached_device_address;
-
- /*
- * Since this phy can be a member of a wide port check to see if one or
- * more phys match the sent and received SAS address as this phy in which
- * case it should participate in the same port.
- */
- scic_sds_phy_get_sas_address(phy, &phy_sas_address);
- scic_sds_phy_get_attached_sas_address(phy, &phy_attached_device_address);
-
- for (i = 0; i < scic->logical_port_entries; i++) {
- struct isci_host *ihost = scic_to_ihost(scic);
- struct scic_sds_port *sci_port = &ihost->ports[i].sci;
-
- scic_sds_port_get_sas_address(sci_port, &port_sas_address);
- scic_sds_port_get_attached_sas_address(sci_port, &port_attached_device_address);
-
- if (sci_sas_address_compare(port_sas_address, phy_sas_address) == 0 &&
- sci_sas_address_compare(port_attached_device_address, phy_attached_device_address) == 0)
- return sci_port;
- }
-
- return NULL;
-}
-
-/**
- *
- * @controller: This is the controller object that contains the port agent
- * @port_agent: This is the port configruation agent for the controller.
- *
- * This routine will validate the port configuration is correct for the SCU
- * hardware. The SCU hardware allows for port configurations as follows. LP0
- * -> (PE0), (PE0, PE1), (PE0, PE1, PE2, PE3) LP1 -> (PE1) LP2 -> (PE2), (PE2,
- * PE3) LP3 -> (PE3) enum sci_status SCI_SUCCESS the port configuration is valid for
- * this port configuration agent. SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION
- * the port configuration is not valid for this port configuration agent.
- */
-static enum sci_status scic_sds_port_configuration_agent_validate_ports(
- struct scic_sds_controller *controller,
- struct scic_sds_port_configuration_agent *port_agent)
-{
- struct isci_host *ihost = scic_to_ihost(controller);
- struct sci_sas_address first_address;
- struct sci_sas_address second_address;
-
- /*
- * Sanity check the max ranges for all the phys the max index
- * is always equal to the port range index */
- if (port_agent->phy_valid_port_range[0].max_index != 0 ||
- port_agent->phy_valid_port_range[1].max_index != 1 ||
- port_agent->phy_valid_port_range[2].max_index != 2 ||
- port_agent->phy_valid_port_range[3].max_index != 3)
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
-
- /*
- * This is a request to configure a single x4 port or at least attempt
- * to make all the phys into a single port */
- if (port_agent->phy_valid_port_range[0].min_index == 0 &&
- port_agent->phy_valid_port_range[1].min_index == 0 &&
- port_agent->phy_valid_port_range[2].min_index == 0 &&
- port_agent->phy_valid_port_range[3].min_index == 0)
- return SCI_SUCCESS;
-
- /*
- * This is a degenerate case where phy 1 and phy 2 are assigned
- * to the same port this is explicitly disallowed by the hardware
- * unless they are part of the same x4 port and this condition was
- * already checked above. */
- if (port_agent->phy_valid_port_range[2].min_index == 1) {
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
- }
-
- /*
- * PE0 and PE3 can never have the same SAS Address unless they
- * are part of the same x4 wide port and we have already checked
- * for this condition. */
- scic_sds_phy_get_sas_address(&ihost->phys[0].sci, &first_address);
- scic_sds_phy_get_sas_address(&ihost->phys[3].sci, &second_address);
-
- if (sci_sas_address_compare(first_address, second_address) == 0) {
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
- }
-
- /*
- * PE0 and PE1 are configured into a 2x1 ports make sure that the
- * SAS Address for PE0 and PE2 are different since they can not be
- * part of the same port. */
- if (port_agent->phy_valid_port_range[0].min_index == 0 &&
- port_agent->phy_valid_port_range[1].min_index == 1) {
- scic_sds_phy_get_sas_address(&ihost->phys[0].sci, &first_address);
- scic_sds_phy_get_sas_address(&ihost->phys[2].sci, &second_address);
-
- if (sci_sas_address_compare(first_address, second_address) == 0) {
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
- }
- }
-
- /*
- * PE2 and PE3 are configured into a 2x1 ports make sure that the
- * SAS Address for PE1 and PE3 are different since they can not be
- * part of the same port. */
- if (port_agent->phy_valid_port_range[2].min_index == 2 &&
- port_agent->phy_valid_port_range[3].min_index == 3) {
- scic_sds_phy_get_sas_address(&ihost->phys[1].sci, &first_address);
- scic_sds_phy_get_sas_address(&ihost->phys[3].sci, &second_address);
-
- if (sci_sas_address_compare(first_address, second_address) == 0) {
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
- }
- }
-
- return SCI_SUCCESS;
-}
-
-/*
- * ******************************************************************************
- * Manual port configuration agent routines
- * ****************************************************************************** */
-
-/**
- *
- *
- * This routine will verify that all of the phys in the same port are using the
- * same SAS address.
- */
-static enum sci_status scic_sds_mpc_agent_validate_phy_configuration(
- struct scic_sds_controller *controller,
- struct scic_sds_port_configuration_agent *port_agent)
-{
- struct isci_host *ihost = scic_to_ihost(controller);
- u32 phy_mask;
- u32 assigned_phy_mask;
- struct sci_sas_address sas_address;
- struct sci_sas_address phy_assigned_address;
- u8 port_index;
- u8 phy_index;
-
- assigned_phy_mask = 0;
- sas_address.high = 0;
- sas_address.low = 0;
-
- for (port_index = 0; port_index < SCI_MAX_PORTS; port_index++) {
- phy_mask = controller->oem_parameters.sds1.ports[port_index].phy_mask;
-
- if (!phy_mask)
- continue;
- /*
- * Make sure that one or more of the phys were not already assinged to
- * a different port. */
- if ((phy_mask & ~assigned_phy_mask) == 0) {
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
- }
-
- /* Find the starting phy index for this round through the loop */
- for (phy_index = 0; phy_index < SCI_MAX_PHYS; phy_index++) {
- if ((phy_mask & (1 << phy_index)) == 0)
- continue;
- scic_sds_phy_get_sas_address(&ihost->phys[phy_index].sci,
- &sas_address);
-
- /*
- * The phy_index can be used as the starting point for the
- * port range since the hardware starts all logical ports
- * the same as the PE index. */
- port_agent->phy_valid_port_range[phy_index].min_index = port_index;
- port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
-
- if (phy_index != port_index) {
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
- }
-
- break;
- }
-
- /*
- * See how many additional phys are being added to this logical port.
- * Note: We have not moved the current phy_index so we will actually
- * compare the startting phy with itself.
- * This is expected and required to add the phy to the port. */
- while (phy_index < SCI_MAX_PHYS) {
- if ((phy_mask & (1 << phy_index)) == 0)
- continue;
- scic_sds_phy_get_sas_address(&ihost->phys[phy_index].sci,
- &phy_assigned_address);
-
- if (sci_sas_address_compare(sas_address, phy_assigned_address) != 0) {
- /*
- * The phy mask specified that this phy is part of the same port
- * as the starting phy and it is not so fail this configuration */
- return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
- }
-
- port_agent->phy_valid_port_range[phy_index].min_index = port_index;
- port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
-
- scic_sds_port_add_phy(&ihost->ports[port_index].sci,
- &ihost->phys[phy_index].sci);
-
- assigned_phy_mask |= (1 << phy_index);
- }
-
- phy_index++;
- }
-
- return scic_sds_port_configuration_agent_validate_ports(controller, port_agent);
-}
-
-/**
- *
- *
- * This timer routine is used to allow the SCI User to rediscover or change
- * device objects before a new series of link up notifications because a link
- * down has allowed a better port configuration.
- */
-static void scic_sds_mpc_agent_timeout_handler(void *object)
-{
- u8 index;
- struct scic_sds_controller *scic = object;
- struct isci_host *ihost = scic_to_ihost(scic);
- struct scic_sds_port_configuration_agent *port_agent = &scic->port_agent;
- u16 configure_phy_mask;
-
- port_agent->timer_pending = false;
-
- /* Find the mask of phys that are reported read but as yet unconfigured into a port */
- configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- struct scic_sds_phy *sci_phy = &ihost->phys[index].sci;
-
- if (configure_phy_mask & (1 << index)) {
- port_agent->link_up_handler(scic, port_agent,
- scic_sds_phy_get_port(sci_phy),
- sci_phy);
- }
- }
-}
-
-/**
- *
- * @controller: This is the controller object that receives the link up
- * notification.
- * @port: This is the port object associated with the phy. If the is no
- * associated port this is an NULL.
- * @phy: This is the phy object which has gone ready.
- *
- * This method handles the manual port configuration link up notifications.
- * Since all ports and phys are associate at initialization time we just turn
- * around and notifiy the port object that there is a link up. If this PHY is
- * not associated with a port there is no action taken. Is it possible to get a
- * link up notification from a phy that has no assocoated port?
- */
-static void scic_sds_mpc_agent_link_up(
- struct scic_sds_controller *controller,
- struct scic_sds_port_configuration_agent *port_agent,
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- /*
- * If the port has an invalid handle then the phy was not assigned to
- * a port. This is because the phy was not given the same SAS Address
- * as the other PHYs in the port. */
- if (port != NULL) {
- port_agent->phy_ready_mask |= (1 << scic_sds_phy_get_index(phy));
-
- scic_sds_port_link_up(port, phy);
-
- if ((port->active_phy_mask & (1 << scic_sds_phy_get_index(phy))) != 0) {
- port_agent->phy_configured_mask |= (1 << scic_sds_phy_get_index(phy));
- }
- }
-}
-
-/**
- *
- * @controller: This is the controller object that receives the link down
- * notification.
- * @port: This is the port object associated with the phy. If the is no
- * associated port this is an NULL. The port is an invalid
- * handle only if the phy was never port of this port. This happens when
- * the phy is not broadcasting the same SAS address as the other phys in the
- * assigned port.
- * @phy: This is the phy object which has gone link down.
- *
- * This function handles the manual port configuration link down notifications.
- * Since all ports and phys are associated at initialization time we just turn
- * around and notifiy the port object of the link down event. If this PHY is
- * not associated with a port there is no action taken. Is it possible to get a
- * link down notification from a phy that has no assocoated port?
- */
-static void scic_sds_mpc_agent_link_down(
- struct scic_sds_controller *scic,
- struct scic_sds_port_configuration_agent *port_agent,
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- if (sci_port != NULL) {
- /*
- * If we can form a new port from the remainder of the phys
- * then we want to start the timer to allow the SCI User to
- * cleanup old devices and rediscover the port before
- * rebuilding the port with the phys that remain in the ready
- * state.
- */
- port_agent->phy_ready_mask &=
- ~(1 << scic_sds_phy_get_index(sci_phy));
- port_agent->phy_configured_mask &=
- ~(1 << scic_sds_phy_get_index(sci_phy));
-
- /*
- * Check to see if there are more phys waiting to be
- * configured into a port. If there are allow the SCI User
- * to tear down this port, if necessary, and then reconstruct
- * the port after the timeout.
- */
- if ((port_agent->phy_configured_mask == 0x0000) &&
- (port_agent->phy_ready_mask != 0x0000) &&
- !port_agent->timer_pending) {
- port_agent->timer_pending = true;
-
- isci_timer_start(port_agent->timer,
- SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT);
- }
-
- scic_sds_port_link_down(sci_port, sci_phy);
- }
-}
-
-/*
- * ******************************************************************************
- * Automatic port configuration agent routines
- * ****************************************************************************** */
-
-/**
- *
- *
- * This routine will verify that the phys are assigned a valid SAS address for
- * automatic port configuration mode.
- */
-static enum sci_status scic_sds_apc_agent_validate_phy_configuration(
- struct scic_sds_controller *controller,
- struct scic_sds_port_configuration_agent *port_agent)
-{
- u8 phy_index;
- u8 port_index;
- struct sci_sas_address sas_address;
- struct sci_sas_address phy_assigned_address;
- struct isci_host *ihost = scic_to_ihost(controller);
-
- phy_index = 0;
-
- while (phy_index < SCI_MAX_PHYS) {
- port_index = phy_index;
-
- /* Get the assigned SAS Address for the first PHY on the controller. */
- scic_sds_phy_get_sas_address(&ihost->phys[phy_index].sci,
- &sas_address);
-
- while (++phy_index < SCI_MAX_PHYS) {
- scic_sds_phy_get_sas_address(&ihost->phys[phy_index].sci,
- &phy_assigned_address);
-
- /* Verify each of the SAS address are all the same for every PHY */
- if (sci_sas_address_compare(sas_address, phy_assigned_address) == 0) {
- port_agent->phy_valid_port_range[phy_index].min_index = port_index;
- port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
- } else {
- port_agent->phy_valid_port_range[phy_index].min_index = phy_index;
- port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
- break;
- }
- }
- }
-
- return scic_sds_port_configuration_agent_validate_ports(controller, port_agent);
-}
-
-/**
- *
- * @controller: This is the controller that to which the port agent is assigned.
- * @port_agent: This is the port agent that is requesting the timer start
- * operation.
- * @phy: This is the phy that has caused the timer operation to be scheduled.
- *
- * This routine will restart the automatic port configuration timeout timer for
- * the next time period. This could be caused by either a link down event or a
- * link up event where we can not yet tell to which port a phy belongs.
- */
-static inline void scic_sds_apc_agent_start_timer(
- struct scic_sds_controller *scic,
- struct scic_sds_port_configuration_agent *port_agent,
- struct scic_sds_phy *sci_phy,
- u32 timeout)
-{
- if (port_agent->timer_pending)
- isci_timer_stop(port_agent->timer);
-
- port_agent->timer_pending = true;
-
- isci_timer_start(port_agent->timer, timeout);
-}
-
-/**
- *
- * @controller: This is the controller object that receives the link up
- * notification.
- * @phy: This is the phy object which has gone link up.
- *
- * This method handles the automatic port configuration for link up
- * notifications.
- */
-static void scic_sds_apc_agent_configure_ports(
- struct scic_sds_controller *controller,
- struct scic_sds_port_configuration_agent *port_agent,
- struct scic_sds_phy *phy,
- bool start_timer)
-{
- u8 port_index;
- enum sci_status status;
- struct scic_sds_port *port;
- enum SCIC_SDS_APC_ACTIVITY apc_activity = SCIC_SDS_APC_SKIP_PHY;
- struct isci_host *ihost = scic_to_ihost(controller);
-
- port = scic_sds_port_configuration_agent_find_port(controller, phy);
-
- if (port != NULL) {
- if (scic_sds_port_is_valid_phy_assignment(port, phy->phy_index))
- apc_activity = SCIC_SDS_APC_ADD_PHY;
- else
- apc_activity = SCIC_SDS_APC_SKIP_PHY;
- } else {
- /*
- * There is no matching Port for this PHY so lets search through the
- * Ports and see if we can add the PHY to its own port or maybe start
- * the timer and wait to see if a wider port can be made.
- *
- * Note the break when we reach the condition of the port id == phy id */
- for (
- port_index = port_agent->phy_valid_port_range[phy->phy_index].min_index;
- port_index <= port_agent->phy_valid_port_range[phy->phy_index].max_index;
- port_index++
- ) {
-
- port = &ihost->ports[port_index].sci;
-
- /* First we must make sure that this PHY can be added to this Port. */
- if (scic_sds_port_is_valid_phy_assignment(port, phy->phy_index)) {
- /*
- * Port contains a PHY with a greater PHY ID than the current
- * PHY that has gone link up. This phy can not be part of any
- * port so skip it and move on. */
- if (port->active_phy_mask > (1 << phy->phy_index)) {
- apc_activity = SCIC_SDS_APC_SKIP_PHY;
- break;
- }
-
- /*
- * We have reached the end of our Port list and have not found
- * any reason why we should not either add the PHY to the port
- * or wait for more phys to become active. */
- if (port->physical_port_index == phy->phy_index) {
- /*
- * The Port either has no active PHYs.
- * Consider that if the port had any active PHYs we would have
- * or active PHYs with
- * a lower PHY Id than this PHY. */
- if (apc_activity != SCIC_SDS_APC_START_TIMER) {
- apc_activity = SCIC_SDS_APC_ADD_PHY;
- }
-
- break;
- }
-
- /*
- * The current Port has no active PHYs and this PHY could be part
- * of this Port. Since we dont know as yet setup to start the
- * timer and see if there is a better configuration. */
- if (port->active_phy_mask == 0) {
- apc_activity = SCIC_SDS_APC_START_TIMER;
- }
- } else if (port->active_phy_mask != 0) {
- /*
- * The Port has an active phy and the current Phy can not
- * participate in this port so skip the PHY and see if
- * there is a better configuration. */
- apc_activity = SCIC_SDS_APC_SKIP_PHY;
- }
- }
- }
-
- /*
- * Check to see if the start timer operations should instead map to an
- * add phy operation. This is caused because we have been waiting to
- * add a phy to a port but could not becuase the automatic port
- * configuration engine had a choice of possible ports for the phy.
- * Since we have gone through a timeout we are going to restrict the
- * choice to the smallest possible port. */
- if (
- (start_timer == false)
- && (apc_activity == SCIC_SDS_APC_START_TIMER)
- ) {
- apc_activity = SCIC_SDS_APC_ADD_PHY;
- }
-
- switch (apc_activity) {
- case SCIC_SDS_APC_ADD_PHY:
- status = scic_sds_port_add_phy(port, phy);
-
- if (status == SCI_SUCCESS) {
- port_agent->phy_configured_mask |= (1 << phy->phy_index);
- }
- break;
-
- case SCIC_SDS_APC_START_TIMER:
- scic_sds_apc_agent_start_timer(
- controller, port_agent, phy, SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION
- );
- break;
-
- case SCIC_SDS_APC_SKIP_PHY:
- default:
- /* do nothing the PHY can not be made part of a port at this time. */
- break;
- }
-}
-
-/**
- * scic_sds_apc_agent_link_up - handle apc link up events
- * @scic: This is the controller object that receives the link up
- * notification.
- * @sci_port: This is the port object associated with the phy. If the is no
- * associated port this is an NULL.
- * @sci_phy: This is the phy object which has gone link up.
- *
- * This method handles the automatic port configuration for link up
- * notifications. Is it possible to get a link down notification from a phy
- * that has no assocoated port?
- */
-static void scic_sds_apc_agent_link_up(struct scic_sds_controller *scic,
- struct scic_sds_port_configuration_agent *port_agent,
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
-{
- u8 phy_index = sci_phy->phy_index;
-
- if (!sci_port) {
- /* the phy is not the part of this port */
- port_agent->phy_ready_mask |= 1 << phy_index;
- scic_sds_apc_agent_configure_ports(scic, port_agent, sci_phy, true);
- } else {
- /* the phy is already the part of the port */
- u32 port_state = sci_port->state_machine.current_state_id;
-
- /* if the PORT'S state is resetting then the link up is from
- * port hard reset in this case, we need to tell the port
- * that link up is recieved
- */
- BUG_ON(port_state != SCI_BASE_PORT_STATE_RESETTING);
- port_agent->phy_ready_mask |= 1 << phy_index;
- scic_sds_port_link_up(sci_port, sci_phy);
- }
-}
-
-/**
- *
- * @controller: This is the controller object that receives the link down
- * notification.
- * @port: This is the port object associated with the phy. If the is no
- * associated port this is an NULL.
- * @phy: This is the phy object which has gone link down.
- *
- * This method handles the automatic port configuration link down
- * notifications. not associated with a port there is no action taken. Is it
- * possible to get a link down notification from a phy that has no assocoated
- * port?
- */
-static void scic_sds_apc_agent_link_down(
- struct scic_sds_controller *controller,
- struct scic_sds_port_configuration_agent *port_agent,
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
-{
- port_agent->phy_ready_mask &= ~(1 << scic_sds_phy_get_index(phy));
-
- if (port != NULL) {
- if (port_agent->phy_configured_mask & (1 << phy->phy_index)) {
- enum sci_status status;
-
- status = scic_sds_port_remove_phy(port, phy);
-
- if (status == SCI_SUCCESS) {
- port_agent->phy_configured_mask &= ~(1 << phy->phy_index);
- }
- }
- }
-}
-
-/* configure the phys into ports when the timer fires */
-static void scic_sds_apc_agent_timeout_handler(void *object)
-{
- u32 index;
- struct scic_sds_port_configuration_agent *port_agent;
- struct scic_sds_controller *scic = object;
- struct isci_host *ihost = scic_to_ihost(scic);
- u16 configure_phy_mask;
-
- port_agent = scic_sds_controller_get_port_configuration_agent(scic);
-
- port_agent->timer_pending = false;
-
- configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
-
- if (!configure_phy_mask)
- return;
-
- for (index = 0; index < SCI_MAX_PHYS; index++) {
- if ((configure_phy_mask & (1 << index)) == 0)
- continue;
-
- scic_sds_apc_agent_configure_ports(scic, port_agent,
- &ihost->phys[index].sci, false);
- }
-}
-
-/*
- * ******************************************************************************
- * Public port configuration agent routines
- * ****************************************************************************** */
-
-/**
- *
- *
- * This method will construct the port configuration agent for operation. This
- * call is universal for both manual port configuration and automatic port
- * configuration modes.
- */
-void scic_sds_port_configuration_agent_construct(
- struct scic_sds_port_configuration_agent *port_agent)
-{
- u32 index;
-
- port_agent->phy_configured_mask = 0x00;
- port_agent->phy_ready_mask = 0x00;
-
- port_agent->link_up_handler = NULL;
- port_agent->link_down_handler = NULL;
-
- port_agent->timer_pending = false;
- port_agent->timer = NULL;
-
- for (index = 0; index < SCI_MAX_PORTS; index++) {
- port_agent->phy_valid_port_range[index].min_index = 0;
- port_agent->phy_valid_port_range[index].max_index = 0;
- }
-}
-
-enum sci_status scic_sds_port_configuration_agent_initialize(
- struct scic_sds_controller *scic,
- struct scic_sds_port_configuration_agent *port_agent)
-{
- enum sci_status status = SCI_SUCCESS;
- enum scic_port_configuration_mode mode;
- struct isci_host *ihost = scic_to_ihost(scic);
-
- mode = scic->oem_parameters.sds1.controller.mode_type;
-
- if (mode == SCIC_PORT_MANUAL_CONFIGURATION_MODE) {
- status = scic_sds_mpc_agent_validate_phy_configuration(
- scic, port_agent);
-
- port_agent->link_up_handler = scic_sds_mpc_agent_link_up;
- port_agent->link_down_handler = scic_sds_mpc_agent_link_down;
-
- port_agent->timer = isci_timer_create(
- ihost,
- scic,
- scic_sds_mpc_agent_timeout_handler);
- } else {
- status = scic_sds_apc_agent_validate_phy_configuration(
- scic, port_agent);
-
- port_agent->link_up_handler = scic_sds_apc_agent_link_up;
- port_agent->link_down_handler = scic_sds_apc_agent_link_down;
-
- port_agent->timer = isci_timer_create(
- ihost,
- scic,
- scic_sds_apc_agent_timeout_handler);
- }
-
- /* Make sure we have actually gotten a timer */
- if ((status == SCI_SUCCESS) && (port_agent->timer == NULL)) {
- dev_err(scic_to_dev(scic),
- "%s: Controller 0x%p automatic port configuration "
- "agent could not get timer.\n",
- __func__,
- scic);
-
- status = SCI_FAILURE;
- }
-
- return status;
-}
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_SDS_PORT_CONFIGURATION_AGENT_H_
-#define _SCIC_SDS_PORT_CONFIGURATION_AGENT_H_
-
-/**
- * This file contains the structures, constants and prototypes used for the
- * core controller automatic port configuration engine.
- *
- *
- */
-
-#include "scic_sds_port.h"
-
-struct scic_sds_controller;
-struct scic_sds_port_configuration_agent;
-struct scic_sds_port;
-struct scic_sds_phy;
-
-typedef void (*scic_sds_port_configuration_agent_phy_handler_t)(
- struct scic_sds_controller *,
- struct scic_sds_port_configuration_agent *,
- struct scic_sds_port *,
- struct scic_sds_phy *
- );
-
-struct SCIC_SDS_PORT_RANGE {
- u8 min_index;
- u8 max_index;
-};
-
-struct scic_sds_port_configuration_agent {
- u16 phy_configured_mask;
- u16 phy_ready_mask;
-
- struct SCIC_SDS_PORT_RANGE phy_valid_port_range[SCI_MAX_PHYS];
-
- bool timer_pending;
-
- scic_sds_port_configuration_agent_phy_handler_t link_up_handler;
- scic_sds_port_configuration_agent_phy_handler_t link_down_handler;
-
- void *timer;
-
-};
-
-void scic_sds_port_configuration_agent_construct(
- struct scic_sds_port_configuration_agent *port_agent);
-
-enum sci_status scic_sds_port_configuration_agent_initialize(
- struct scic_sds_controller *controller,
- struct scic_sds_port_configuration_agent *port_agent);
-
-#endif /* _SCIC_SDS_PORT_CONFIGURATION_AGENT_H_ */
#include "probe_roms.h"
#include "remote_device.h"
#include "request.h"
-#include "scic_sds_port_configuration_agent.h"
#include "scu_completion_codes.h"
#include "scu_event_codes.h"
#include "registers.h"
#ifndef _SCI_HOST_H_
#define _SCI_HOST_H_
-#include "scic_config_parameters.h"
#include "remote_device.h"
#include "phy.h"
#include "pool.h"
#include "registers.h"
#include "scu_unsolicited_frame.h"
#include "unsolicited_frame_control.h"
-#include "scic_sds_port_configuration_agent.h"
+#include "probe_roms.h"
struct scic_sds_request;
struct scu_task_context;
+
/**
* struct scic_power_control -
*
};
+struct scic_sds_port_configuration_agent;
+typedef void (*port_config_fn)(struct scic_sds_controller *,
+ struct scic_sds_port_configuration_agent *,
+ struct scic_sds_port *, struct scic_sds_phy *);
+
+struct scic_sds_port_configuration_agent {
+ u16 phy_configured_mask;
+ u16 phy_ready_mask;
+ struct {
+ u8 min_index;
+ u8 max_index;
+ } phy_valid_port_range[SCI_MAX_PHYS];
+ bool timer_pending;
+ port_config_fn link_up_handler;
+ port_config_fn link_down_handler;
+ void *timer;
+};
+
/**
* struct scic_sds_controller -
*
enum sci_status scic_controller_free_io_tag(
struct scic_sds_controller *scic,
u16 io_tag);
+
+void scic_sds_port_configuration_agent_construct(
+ struct scic_sds_port_configuration_agent *port_agent);
+
+enum sci_status scic_sds_port_configuration_agent_initialize(
+ struct scic_sds_controller *controller,
+ struct scic_sds_port_configuration_agent *port_agent);
#endif
#include "host.h"
#include "phy.h"
#include "scu_event_codes.h"
-#include "scic_port.h"
-#include "scic_config_parameters.h"
#include "timers.h"
+#include "probe_roms.h"
/* Maximum arbitration wait time in micro-seconds */
#define SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME (700)
#include <scsi/sas.h>
#include <scsi/libsas.h>
#include "state_machine.h"
+#include "sas.h"
/* This is the timeout value for the SATA phy to wait for a SIGNATURE FIS
* before restarting the starting state machine. Technically, the old parallel
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#include <linux/workqueue.h>
#include "isci.h"
-#include "scic_port.h"
#include "port.h"
#include "request.h"
+#include "timers.h"
+
+#define SCIC_SDS_PORT_HARD_RESET_TIMEOUT (1000)
+#define SCU_DUMMY_INDEX (0xFFFF)
static void isci_port_change_state(struct isci_port *iport, enum isci_status status)
{
spin_unlock_irqrestore(&iport->state_lock, flags);
}
-void isci_port_init(struct isci_port *iport, struct isci_host *ihost, int index)
+/*
+ * This function will indicate which protocols are supported by this port.
+ * @sci_port: a handle corresponding to the SAS port for which to return the
+ * supported protocols.
+ * @protocols: This parameter specifies a pointer to a data structure
+ * which the core will copy the protocol values for the port from the
+ * transmit_identification register.
+ */
+static void
+scic_sds_port_get_protocols(struct scic_sds_port *sci_port,
+ struct scic_phy_proto *protocols)
{
- INIT_LIST_HEAD(&iport->remote_dev_list);
- INIT_LIST_HEAD(&iport->domain_dev_list);
- spin_lock_init(&iport->state_lock);
- init_completion(&iport->start_complete);
- iport->isci_host = ihost;
- isci_port_change_state(iport, isci_freed);
+ u8 index;
+
+ protocols->all = 0;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if (sci_port->phy_table[index] != NULL) {
+ scic_sds_phy_get_protocols(sci_port->phy_table[index],
+ protocols);
+ }
+ }
}
/**
- * isci_port_get_state() - This function gets the status of the port object.
- * @isci_port: This parameter points to the isci_port object
+ * This method requests a list (mask) of the phys contained in the supplied SAS
+ * port.
+ * @sci_port: a handle corresponding to the SAS port for which to return the
+ * phy mask.
*
- * status of the object as a isci_status enum.
+ * Return a bit mask indicating which phys are a part of this port. Each bit
+ * corresponds to a phy identifier (e.g. bit 0 = phy id 0).
*/
-enum isci_status isci_port_get_state(
- struct isci_port *isci_port)
+static u32 scic_sds_port_get_phys(struct scic_sds_port *sci_port)
{
- return isci_port->status;
+ u32 index;
+ u32 mask;
+
+ mask = 0;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if (sci_port->phy_table[index] != NULL) {
+ mask |= (1 << index);
+ }
+ }
+
+ return mask;
}
-void isci_port_bc_change_received(struct isci_host *ihost,
- struct scic_sds_port *sci_port,
- struct scic_sds_phy *sci_phy)
+/**
+ * scic_port_get_properties() - This method simply returns the properties
+ * regarding the port, such as: physical index, protocols, sas address, etc.
+ * @port: this parameter specifies the port for which to retrieve the physical
+ * index.
+ * @properties: This parameter specifies the properties structure into which to
+ * copy the requested information.
+ *
+ * Indicate if the user specified a valid port. SCI_SUCCESS This value is
+ * returned if the specified port was valid. SCI_FAILURE_INVALID_PORT This
+ * value is returned if the specified port is not valid. When this value is
+ * returned, no data is copied to the properties output parameter.
+ */
+static enum sci_status scic_port_get_properties(struct scic_sds_port *port,
+ struct scic_port_properties *prop)
{
- struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
+ if ((port == NULL) ||
+ (port->logical_port_index == SCIC_SDS_DUMMY_PORT))
+ return SCI_FAILURE_INVALID_PORT;
- dev_dbg(&ihost->pdev->dev, "%s: iphy = %p, sas_phy = %p\n",
- __func__, iphy, &iphy->sas_phy);
+ prop->index = port->logical_port_index;
+ prop->phy_mask = scic_sds_port_get_phys(port);
+ scic_sds_port_get_sas_address(port, &prop->local.sas_address);
+ scic_sds_port_get_protocols(port, &prop->local.protocols);
+ scic_sds_port_get_attached_sas_address(port, &prop->remote.sas_address);
- ihost->sas_ha.notify_port_event(&iphy->sas_phy, PORTE_BROADCAST_RCVD);
- scic_port_enable_broadcast_change_notification(sci_port);
+ return SCI_SUCCESS;
}
-void isci_port_link_up(struct isci_host *isci_host,
- struct scic_sds_port *port,
- struct scic_sds_phy *phy)
+static 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;
* @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)
+static 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;
}
-/**
- * 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.
* @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)
+static 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);
* @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)
+static 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);
}
+static void isci_port_stop_complete(struct scic_sds_controller *scic,
+ struct scic_sds_port *sci_port,
+ enum sci_status completion_status)
+{
+ dev_dbg(&scic_to_ihost(scic)->pdev->dev, "Port stop complete\n");
+}
+
/**
* isci_port_hard_reset_complete() - This function is called by the sci core
* when the hard reset complete notification has been received.
* process.
*
*/
-void isci_port_hard_reset_complete(struct isci_port *isci_port,
- enum sci_status completion_status)
+static 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",
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)
+/* This method will return a true value if the specified phy can be assigned to
+ * this port The following is a list of phys for each port that are allowed: -
+ * Port 0 - 3 2 1 0 - Port 1 - 1 - Port 2 - 3 2 - Port 3 - 3 This method
+ * doesn't preclude all configurations. It merely ensures that a phy is part
+ * of the allowable set of phy identifiers for that port. For example, one
+ * could assign phy 3 to port 0 and no other phys. Please refer to
+ * scic_sds_port_is_phy_mask_valid() for information regarding whether the
+ * phy_mask for a port can be supported. bool true if this is a valid phy
+ * assignment for the port false if this is not a valid phy assignment for the
+ * port
+ */
+bool scic_sds_port_is_valid_phy_assignment(struct scic_sds_port *sci_port,
+ u32 phy_index)
{
- unsigned long flags;
- enum sci_status status;
- int ret = TMF_RESP_FUNC_COMPLETE;
+ /* Initialize to invalid value. */
+ u32 existing_phy_index = SCI_MAX_PHYS;
+ u32 index;
- dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
- __func__, iport);
+ if ((sci_port->physical_port_index == 1) && (phy_index != 1)) {
+ return false;
+ }
- init_completion(&iport->hard_reset_complete);
+ if (sci_port->physical_port_index == 3 && phy_index != 3) {
+ return false;
+ }
- spin_lock_irqsave(&ihost->scic_lock, flags);
+ if (
+ (sci_port->physical_port_index == 2)
+ && ((phy_index == 0) || (phy_index == 1))
+ ) {
+ return false;
+ }
- #define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
- status = scic_port_hard_reset(&iport->sci, ISCI_PORT_RESET_TIMEOUT);
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if ((sci_port->phy_table[index] != NULL)
+ && (index != phy_index)) {
+ existing_phy_index = index;
+ }
+ }
- spin_unlock_irqrestore(&ihost->scic_lock, flags);
+ /*
+ * Ensure that all of the phys in the port are capable of
+ * operating at the same maximum link rate. */
+ if (
+ (existing_phy_index < SCI_MAX_PHYS)
+ && (sci_port->owning_controller->user_parameters.sds1.phys[
+ phy_index].max_speed_generation !=
+ sci_port->owning_controller->user_parameters.sds1.phys[
+ existing_phy_index].max_speed_generation)
+ )
+ return false;
- if (status == SCI_SUCCESS) {
- wait_for_completion(&iport->hard_reset_complete);
+ return true;
+}
- dev_dbg(&ihost->pdev->dev,
- "%s: iport = %p; hard reset completion\n",
- __func__, iport);
+/**
+ *
+ * @sci_port: This is the port object for which to determine if the phy mask
+ * can be supported.
+ *
+ * This method will return a true value if the port's phy mask can be supported
+ * by the SCU. The following is a list of valid PHY mask configurations for
+ * each port: - Port 0 - [[3 2] 1] 0 - Port 1 - [1] - Port 2 - [[3] 2]
+ * - Port 3 - [3] This method returns a boolean indication specifying if the
+ * phy mask can be supported. true if this is a valid phy assignment for the
+ * port false if this is not a valid phy assignment for the port
+ */
+static bool scic_sds_port_is_phy_mask_valid(
+ struct scic_sds_port *sci_port,
+ u32 phy_mask)
+{
+ if (sci_port->physical_port_index == 0) {
+ if (((phy_mask & 0x0F) == 0x0F)
+ || ((phy_mask & 0x03) == 0x03)
+ || ((phy_mask & 0x01) == 0x01)
+ || (phy_mask == 0))
+ return true;
+ } else if (sci_port->physical_port_index == 1) {
+ if (((phy_mask & 0x02) == 0x02)
+ || (phy_mask == 0))
+ return true;
+ } else if (sci_port->physical_port_index == 2) {
+ if (((phy_mask & 0x0C) == 0x0C)
+ || ((phy_mask & 0x04) == 0x04)
+ || (phy_mask == 0))
+ return true;
+ } else if (sci_port->physical_port_index == 3) {
+ if (((phy_mask & 0x08) == 0x08)
+ || (phy_mask == 0))
+ return true;
+ }
- if (iport->hard_reset_status != SCI_SUCCESS)
- ret = TMF_RESP_FUNC_FAILED;
- } else {
- ret = TMF_RESP_FUNC_FAILED;
+ return false;
+}
- dev_err(&ihost->pdev->dev,
- "%s: iport = %p; scic_port_hard_reset call"
- " failed 0x%x\n",
- __func__, iport, status);
+/**
+ *
+ * @sci_port: This parameter specifies the port from which to return a
+ * connected phy.
+ *
+ * This method retrieves a currently active (i.e. connected) phy contained in
+ * the port. Currently, the lowest order phy that is connected is returned.
+ * This method returns a pointer to a SCIS_SDS_PHY object. NULL This value is
+ * returned if there are no currently active (i.e. connected to a remote end
+ * point) phys contained in the port. All other values specify a struct scic_sds_phy
+ * object that is active in the port.
+ */
+static struct scic_sds_phy *scic_sds_port_get_a_connected_phy(
+ struct scic_sds_port *sci_port
+ ) {
+ u32 index;
+ struct scic_sds_phy *phy;
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ /*
+ * Ensure that the phy is both part of the port and currently
+ * connected to the remote end-point. */
+ phy = sci_port->phy_table[index];
+ if (
+ (phy != NULL)
+ && scic_sds_port_active_phy(sci_port, phy)
+ ) {
+ return phy;
+ }
}
- /* If the hard reset for the port has failed, consider this
- * the same as link failures on all phys in the port.
+ return NULL;
+}
+
+/**
+ * scic_sds_port_set_phy() -
+ * @out]: port The port object to which the phy assignement is being made.
+ * @out]: phy The phy which is being assigned to the port.
+ *
+ * This method attempts to make the assignment of the phy to the port. If
+ * successful the phy is assigned to the ports phy table. bool true if the phy
+ * assignment can be made. false if the phy assignement can not be made. This
+ * is a functional test that only fails if the phy is currently assigned to a
+ * different port.
+ */
+static enum sci_status scic_sds_port_set_phy(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ /*
+ * Check to see if we can add this phy to a port
+ * that means that the phy is not part of a port and that the port does
+ * not already have a phy assinged to the phy index. */
+ if (
+ (port->phy_table[phy->phy_index] == NULL)
+ && (scic_sds_phy_get_port(phy) == NULL)
+ && scic_sds_port_is_valid_phy_assignment(port, phy->phy_index)
+ ) {
+ /*
+ * Phy is being added in the stopped state so we are in MPC mode
+ * make logical port index = physical port index */
+ port->logical_port_index = port->physical_port_index;
+ port->phy_table[phy->phy_index] = phy;
+ scic_sds_phy_set_port(phy, port);
+
+ return SCI_SUCCESS;
+ }
+
+ return SCI_FAILURE;
+}
+
+/**
+ * scic_sds_port_clear_phy() -
+ * @out]: port The port from which the phy is being cleared.
+ * @out]: phy The phy being cleared from the port.
+ *
+ * This method will clear the phy assigned to this port. This method fails if
+ * this phy is not currently assinged to this port. bool true if the phy is
+ * removed from the port. false if this phy is not assined to this port.
+ */
+static enum sci_status scic_sds_port_clear_phy(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ /* Make sure that this phy is part of this port */
+ if (port->phy_table[phy->phy_index] == phy &&
+ scic_sds_phy_get_port(phy) == port) {
+ struct scic_sds_controller *scic = port->owning_controller;
+ struct isci_host *ihost = scic_to_ihost(scic);
+
+ /* Yep it is assigned to this port so remove it */
+ scic_sds_phy_set_port(phy, &ihost->ports[SCI_MAX_PORTS].sci);
+ port->phy_table[phy->phy_index] = NULL;
+ return SCI_SUCCESS;
+ }
+
+ return SCI_FAILURE;
+}
+
+/**
+ * scic_sds_port_add_phy() -
+ * @sci_port: This parameter specifies the port in which the phy will be added.
+ * @sci_phy: This parameter is the phy which is to be added to the port.
+ *
+ * This method will add a PHY to the selected port. This method returns an
+ * enum sci_status. SCI_SUCCESS the phy has been added to the port. Any other status
+ * is failre to add the phy to the port.
+ */
+enum sci_status scic_sds_port_add_phy(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ return sci_port->state_handlers->add_phy_handler(
+ sci_port, sci_phy);
+}
+
+
+/**
+ * scic_sds_port_remove_phy() -
+ * @sci_port: This parameter specifies the port in which the phy will be added.
+ * @sci_phy: This parameter is the phy which is to be added to the port.
+ *
+ * This method will remove the PHY from the selected PORT. This method returns
+ * an enum sci_status. SCI_SUCCESS the phy has been removed from the port. Any other
+ * status is failre to add the phy to the port.
+ */
+enum sci_status scic_sds_port_remove_phy(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ return sci_port->state_handlers->remove_phy_handler(
+ sci_port, sci_phy);
+}
+
+/**
+ * This method requests the SAS address for the supplied SAS port from the SCI
+ * implementation.
+ * @sci_port: a handle corresponding to the SAS port for which to return the
+ * SAS address.
+ * @sas_address: This parameter specifies a pointer to a SAS address structure
+ * into which the core will copy the SAS address for the port.
+ *
+ */
+void scic_sds_port_get_sas_address(
+ struct scic_sds_port *sci_port,
+ struct sci_sas_address *sas_address)
+{
+ u32 index;
+
+ sas_address->high = 0;
+ sas_address->low = 0;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if (sci_port->phy_table[index] != NULL) {
+ scic_sds_phy_get_sas_address(sci_port->phy_table[index], sas_address);
+ }
+ }
+}
+
+/*
+ * This function requests the SAS address for the device directly attached to
+ * this SAS port.
+ * @sci_port: a handle corresponding to the SAS port for which to return the
+ * SAS address.
+ * @sas_address: This parameter specifies a pointer to a SAS address structure
+ * into which the core will copy the SAS address for the device directly
+ * attached to the port.
+ *
+ */
+void scic_sds_port_get_attached_sas_address(
+ struct scic_sds_port *sci_port,
+ struct sci_sas_address *sas_address)
+{
+ struct scic_sds_phy *sci_phy;
+
+ /*
+ * Ensure that the phy is both part of the port and currently
+ * connected to the remote end-point.
*/
- 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);
+ sci_phy = scic_sds_port_get_a_connected_phy(sci_port);
+ if (sci_phy) {
+ if (sci_phy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA) {
+ scic_sds_phy_get_attached_sas_address(sci_phy,
+ sas_address);
+ } else {
+ scic_sds_phy_get_sas_address(sci_phy, sas_address);
+ sas_address->low += sci_phy->phy_index;
+ }
+ } else {
+ sas_address->high = 0;
+ sas_address->low = 0;
+ }
+}
- isci_port_link_down(ihost, iphy, iport);
+/**
+ * scic_sds_port_construct_dummy_rnc() - create dummy rnc for si workaround
+ *
+ * @sci_port: logical port on which we need to create the remote node context
+ * @rni: remote node index for this remote node context.
+ *
+ * This routine will construct a dummy remote node context data structure
+ * This structure will be posted to the hardware to work around a scheduler
+ * error in the hardware.
+ */
+static void scic_sds_port_construct_dummy_rnc(struct scic_sds_port *sci_port, u16 rni)
+{
+ union scu_remote_node_context *rnc;
+
+ rnc = &sci_port->owning_controller->remote_node_context_table[rni];
+
+ memset(rnc, 0, sizeof(union scu_remote_node_context));
+
+ rnc->ssp.remote_sas_address_hi = 0;
+ rnc->ssp.remote_sas_address_lo = 0;
+
+ rnc->ssp.remote_node_index = rni;
+ rnc->ssp.remote_node_port_width = 1;
+ rnc->ssp.logical_port_index = sci_port->physical_port_index;
+
+ rnc->ssp.nexus_loss_timer_enable = false;
+ rnc->ssp.check_bit = false;
+ rnc->ssp.is_valid = true;
+ rnc->ssp.is_remote_node_context = true;
+ rnc->ssp.function_number = 0;
+ rnc->ssp.arbitration_wait_time = 0;
+}
+
+/**
+ * scic_sds_port_construct_dummy_task() - create dummy task for si workaround
+ * @sci_port The logical port on which we need to create the
+ * remote node context.
+ * context.
+ * @tci The remote node index for this remote node context.
+ *
+ * This routine will construct a dummy task context data structure. This
+ * structure will be posted to the hardwre to work around a scheduler error
+ * in the hardware.
+ *
+ */
+static void scic_sds_port_construct_dummy_task(struct scic_sds_port *sci_port, u16 tci)
+{
+ struct scu_task_context *task_context;
+
+ task_context = scic_sds_controller_get_task_context_buffer(sci_port->owning_controller, tci);
+
+ memset(task_context, 0, sizeof(struct scu_task_context));
+
+ task_context->abort = 0;
+ task_context->priority = 0;
+ task_context->initiator_request = 1;
+ task_context->connection_rate = 1;
+ task_context->protocol_engine_index = 0;
+ task_context->logical_port_index = sci_port->physical_port_index;
+ task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
+ task_context->task_index = scic_sds_io_tag_get_index(tci);
+ task_context->valid = SCU_TASK_CONTEXT_VALID;
+ task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+
+ task_context->remote_node_index = sci_port->reserved_rni;
+ task_context->command_code = 0;
+
+ task_context->link_layer_control = 0;
+ task_context->do_not_dma_ssp_good_response = 1;
+ task_context->strict_ordering = 0;
+ task_context->control_frame = 0;
+ task_context->timeout_enable = 0;
+ task_context->block_guard_enable = 0;
+
+ task_context->address_modifier = 0;
+
+ task_context->task_phase = 0x01;
+}
+
+static void scic_sds_port_destroy_dummy_resources(struct scic_sds_port *sci_port)
+{
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+
+ if (sci_port->reserved_tci != SCU_DUMMY_INDEX)
+ scic_controller_free_io_tag(scic, sci_port->reserved_tci);
+
+ if (sci_port->reserved_rni != SCU_DUMMY_INDEX)
+ scic_sds_remote_node_table_release_remote_node_index(&scic->available_remote_nodes,
+ 1, sci_port->reserved_rni);
+
+ sci_port->reserved_rni = SCU_DUMMY_INDEX;
+ sci_port->reserved_tci = SCU_DUMMY_INDEX;
+}
+
+/**
+ * This method performs initialization of the supplied port. Initialization
+ * includes: - state machine initialization - member variable initialization
+ * - configuring the phy_mask
+ * @sci_port:
+ * @transport_layer_registers:
+ * @port_task_scheduler_registers:
+ * @port_configuration_regsiter:
+ *
+ * enum sci_status SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION This value is returned
+ * if the phy being added to the port
+ */
+enum sci_status scic_sds_port_initialize(
+ struct scic_sds_port *sci_port,
+ void __iomem *port_task_scheduler_registers,
+ void __iomem *port_configuration_regsiter,
+ void __iomem *viit_registers)
+{
+ sci_port->port_task_scheduler_registers = port_task_scheduler_registers;
+ sci_port->port_pe_configuration_register = port_configuration_regsiter;
+ sci_port->viit_registers = viit_registers;
+
+ return SCI_SUCCESS;
+}
+
+/**
+ * scic_port_hard_reset() - perform port hard reset
+ * @port: a handle corresponding to the SAS port to be hard reset.
+ * @reset_timeout: This parameter specifies the number of milliseconds in which
+ * the port reset operation should complete.
+ *
+ * The SCI User callback in scic_user_callbacks_t will only be called once for
+ * each phy in the SAS Port at completion of the hard reset sequence. Return a
+ * status indicating whether the hard reset started successfully. SCI_SUCCESS
+ * This value is returned if the hard reset operation started successfully.
+ */
+static enum sci_status scic_port_hard_reset(struct scic_sds_port *port,
+ u32 reset_timeout)
+{
+ return port->state_handlers->reset_handler(
+ port, reset_timeout);
+}
+
+/**
+ * This method assigns the direct attached device ID for this port.
+ *
+ * @param[in] sci_port The port for which the direct attached device id is to
+ * be assigned.
+ * @param[in] device_id The direct attached device ID to assign to the port.
+ * This will be the RNi for the device
+ */
+void scic_sds_port_setup_transports(
+ struct scic_sds_port *sci_port,
+ u32 device_id)
+{
+ u8 index;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if (sci_port->active_phy_mask & (1 << index))
+ scic_sds_phy_setup_transport(sci_port->phy_table[index], device_id);
}
+}
- return ret;
+/**
+ *
+ * @sci_port: This is the port on which the phy should be enabled.
+ * @sci_phy: This is the specific phy which to enable.
+ * @do_notify_user: This parameter specifies whether to inform the user (via
+ * scic_cb_port_link_up()) as to the fact that a new phy as become ready.
+ *
+ * This function will activate the phy in the port.
+ * Activation includes: - adding
+ * the phy to the port - enabling the Protocol Engine in the silicon. -
+ * notifying the user that the link is up. none
+ */
+static void scic_sds_port_activate_phy(struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy,
+ bool do_notify_user)
+{
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ struct isci_host *ihost = scic_to_ihost(scic);
+
+ if (sci_phy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA)
+ scic_sds_phy_resume(sci_phy);
+
+ sci_port->active_phy_mask |= 1 << sci_phy->phy_index;
+
+ scic_sds_controller_clear_invalid_phy(scic, sci_phy);
+
+ if (do_notify_user == true)
+ isci_port_link_up(ihost, sci_port, sci_phy);
}
-void isci_port_stop_complete(struct scic_sds_controller *scic,
- struct scic_sds_port *sci_port,
- enum sci_status completion_status)
+void scic_sds_port_deactivate_phy(struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy,
+ bool do_notify_user)
{
- dev_dbg(&scic_to_ihost(scic)->pdev->dev, "Port stop complete\n");
+ struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port);
+ struct isci_port *iport = sci_port_to_iport(sci_port);
+ struct isci_host *ihost = scic_to_ihost(scic);
+ struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
+
+ sci_port->active_phy_mask &= ~(1 << sci_phy->phy_index);
+
+ sci_phy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN;
+
+ /* Re-assign the phy back to the LP as if it were a narrow port */
+ writel(sci_phy->phy_index,
+ &sci_port->port_pe_configuration_register[sci_phy->phy_index]);
+
+ if (do_notify_user == true)
+ isci_port_link_down(ihost, iphy, iport);
+}
+
+/**
+ *
+ * @sci_port: This is the port on which the phy should be disabled.
+ * @sci_phy: This is the specific phy which to disabled.
+ *
+ * This function will disable the phy and report that the phy is not valid for
+ * this port object. None
+ */
+static void scic_sds_port_invalid_link_up(struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+
+ /*
+ * Check to see if we have alreay reported this link as bad and if
+ * not go ahead and tell the SCI_USER that we have discovered an
+ * invalid link.
+ */
+ if ((scic->invalid_phy_mask & (1 << sci_phy->phy_index)) == 0) {
+ scic_sds_controller_set_invalid_phy(scic, sci_phy);
+ dev_warn(&scic_to_ihost(scic)->pdev->dev, "Invalid link up!\n");
+ }
+}
+
+/**
+ * scic_sds_port_general_link_up_handler - phy can be assigned to port?
+ * @sci_port: scic_sds_port object for which has a phy that has gone link up.
+ * @sci_phy: This is the struct scic_sds_phy object that has gone link up.
+ * @do_notify_user: This parameter specifies whether to inform the user (via
+ * scic_cb_port_link_up()) as to the fact that a new phy as become ready.
+ *
+ * Determine if this phy can be assigned to this
+ * port . If the phy is not a valid PHY for
+ * this port then the function will notify the user. A PHY can only be
+ * part of a port if it's attached SAS ADDRESS is the same as all other PHYs in
+ * the same port. none
+ */
+static void scic_sds_port_general_link_up_handler(struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy,
+ bool do_notify_user)
+{
+ struct sci_sas_address port_sas_address;
+ struct sci_sas_address phy_sas_address;
+
+ scic_sds_port_get_attached_sas_address(sci_port, &port_sas_address);
+ scic_sds_phy_get_attached_sas_address(sci_phy, &phy_sas_address);
+
+ /* If the SAS address of the new phy matches the SAS address of
+ * other phys in the port OR this is the first phy in the port,
+ * then activate the phy and allow it to be used for operations
+ * in this port.
+ */
+ if ((phy_sas_address.high == port_sas_address.high &&
+ phy_sas_address.low == port_sas_address.low) ||
+ sci_port->active_phy_mask == 0) {
+ struct sci_base_state_machine *sm = &sci_port->state_machine;
+
+ scic_sds_port_activate_phy(sci_port, sci_phy, do_notify_user);
+ if (sm->current_state_id == SCI_BASE_PORT_STATE_RESETTING)
+ sci_base_state_machine_change_state(sm, SCI_BASE_PORT_STATE_READY);
+ } else
+ scic_sds_port_invalid_link_up(sci_port, sci_phy);
+}
+
+
+
+/**
+ * This method returns false if the port only has a single phy object assigned.
+ * If there are no phys or more than one phy then the method will return
+ * true.
+ * @sci_port: The port for which the wide port condition is to be checked.
+ *
+ * bool true Is returned if this is a wide ported port. false Is returned if
+ * this is a narrow port.
+ */
+static bool scic_sds_port_is_wide(struct scic_sds_port *sci_port)
+{
+ u32 index;
+ u32 phy_count = 0;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if (sci_port->phy_table[index] != NULL) {
+ phy_count++;
+ }
+ }
+
+ return phy_count != 1;
+}
+
+/**
+ * This method is called by the PHY object when the link is detected. if the
+ * port wants the PHY to continue on to the link up state then the port
+ * layer must return true. If the port object returns false the phy object
+ * must halt its attempt to go link up.
+ * @sci_port: The port associated with the phy object.
+ * @sci_phy: The phy object that is trying to go link up.
+ *
+ * true if the phy object can continue to the link up condition. true Is
+ * returned if this phy can continue to the ready state. false Is returned if
+ * can not continue on to the ready state. This notification is in place for
+ * wide ports and direct attached phys. Since there are no wide ported SATA
+ * devices this could become an invalid port configuration.
+ */
+bool scic_sds_port_link_detected(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ if ((sci_port->logical_port_index != SCIC_SDS_DUMMY_PORT) &&
+ (sci_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) &&
+ scic_sds_port_is_wide(sci_port)) {
+ scic_sds_port_invalid_link_up(sci_port, sci_phy);
+
+ return false;
+ }
+
+ return true;
+}
+
+/**
+ * This method is the entry point for the phy to inform the port that it is now
+ * in a ready state
+ * @sci_port:
+ *
+ *
+ */
+void scic_sds_port_link_up(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ sci_phy->is_in_link_training = false;
+
+ sci_port->state_handlers->link_up_handler(sci_port, sci_phy);
+}
+
+/**
+ * This method is the entry point for the phy to inform the port that it is no
+ * longer in a ready state
+ * @sci_port:
+ *
+ *
+ */
+void scic_sds_port_link_down(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ sci_port->state_handlers->link_down_handler(sci_port, sci_phy);
+}
+
+/**
+ * This method is called to start an IO request on this port.
+ * @sci_port:
+ * @sci_dev:
+ * @sci_req:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_port_start_io(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_remote_device *sci_dev,
+ struct scic_sds_request *sci_req)
+{
+ return sci_port->state_handlers->start_io_handler(
+ sci_port, sci_dev, sci_req);
+}
+
+/**
+ * This method is called to complete an IO request to the port.
+ * @sci_port:
+ * @sci_dev:
+ * @sci_req:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_port_complete_io(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_remote_device *sci_dev,
+ struct scic_sds_request *sci_req)
+{
+ return sci_port->state_handlers->complete_io_handler(
+ sci_port, sci_dev, sci_req);
+}
+
+/**
+ * This method is provided to timeout requests for port operations. Mostly its
+ * for the port reset operation.
+ *
+ *
+ */
+static void scic_sds_port_timeout_handler(void *port)
+{
+ struct scic_sds_port *sci_port = port;
+ u32 current_state;
+
+ current_state = sci_base_state_machine_get_state(
+ &sci_port->state_machine);
+
+ if (current_state == SCI_BASE_PORT_STATE_RESETTING) {
+ /*
+ * if the port is still in the resetting state then the
+ * timeout fired before the reset completed.
+ */
+ sci_base_state_machine_change_state(
+ &sci_port->state_machine,
+ SCI_BASE_PORT_STATE_FAILED);
+ } else if (current_state == SCI_BASE_PORT_STATE_STOPPED) {
+ /*
+ * if the port is stopped then the start request failed
+ * In this case stay in the stopped state.
+ */
+ dev_err(sciport_to_dev(sci_port),
+ "%s: SCIC Port 0x%p failed to stop before tiemout.\n",
+ __func__,
+ sci_port);
+ } else if (current_state == SCI_BASE_PORT_STATE_STOPPING) {
+ /*
+ * if the port is still stopping then the stop has not
+ * completed
+ */
+ isci_port_stop_complete(
+ scic_sds_port_get_controller(sci_port),
+ sci_port,
+ SCI_FAILURE_TIMEOUT);
+ } else {
+ /*
+ * The port is in the ready state and we have a timer
+ * reporting a timeout this should not happen.
+ */
+ dev_err(sciport_to_dev(sci_port),
+ "%s: SCIC Port 0x%p is processing a timeout operation "
+ "in state %d.\n",
+ __func__,
+ sci_port,
+ current_state);
+ }
+}
+
+/* --------------------------------------------------------------------------- */
+
+/**
+ * This function updates the hardwares VIIT entry for this port.
+ *
+ *
+ */
+static void scic_sds_port_update_viit_entry(struct scic_sds_port *sci_port)
+{
+ struct sci_sas_address sas_address;
+
+ scic_sds_port_get_sas_address(sci_port, &sas_address);
+
+ writel(sas_address.high,
+ &sci_port->viit_registers->initiator_sas_address_hi);
+ writel(sas_address.low,
+ &sci_port->viit_registers->initiator_sas_address_lo);
+
+ /* This value get cleared just in case its not already cleared */
+ writel(0, &sci_port->viit_registers->reserved);
+
+ /* We are required to update the status register last */
+ writel(SCU_VIIT_ENTRY_ID_VIIT |
+ SCU_VIIT_IPPT_INITIATOR |
+ ((1 << sci_port->physical_port_index) << SCU_VIIT_ENTRY_LPVIE_SHIFT) |
+ SCU_VIIT_STATUS_ALL_VALID,
+ &sci_port->viit_registers->status);
+}
+
+/**
+ * This method returns the maximum allowed speed for data transfers on this
+ * port. This maximum allowed speed evaluates to the maximum speed of the
+ * slowest phy in the port.
+ * @sci_port: This parameter specifies the port for which to retrieve the
+ * maximum allowed speed.
+ *
+ * This method returns the maximum negotiated speed of the slowest phy in the
+ * port.
+ */
+enum sas_linkrate scic_sds_port_get_max_allowed_speed(
+ struct scic_sds_port *sci_port)
+{
+ u16 index;
+ enum sas_linkrate max_allowed_speed = SAS_LINK_RATE_6_0_GBPS;
+ struct scic_sds_phy *phy = NULL;
+
+ /*
+ * Loop through all of the phys in this port and find the phy with the
+ * lowest maximum link rate. */
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ phy = sci_port->phy_table[index];
+ if (
+ (phy != NULL)
+ && (scic_sds_port_active_phy(sci_port, phy) == true)
+ && (phy->max_negotiated_speed < max_allowed_speed)
+ )
+ max_allowed_speed = phy->max_negotiated_speed;
+ }
+
+ return max_allowed_speed;
+}
+
+static void scic_port_enable_broadcast_change_notification(struct scic_sds_port *port)
+{
+ struct scic_sds_phy *phy;
+ u32 register_value;
+ u8 index;
+
+ /* Loop through all of the phys to enable BCN. */
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ phy = port->phy_table[index];
+ if (phy != NULL) {
+ register_value =
+ readl(&phy->link_layer_registers->link_layer_control);
+
+ /* clear the bit by writing 1. */
+ writel(register_value,
+ &phy->link_layer_registers->link_layer_control);
+ }
+ }
+}
+
+/*
+ * ****************************************************************************
+ * * READY SUBSTATE HANDLERS
+ * **************************************************************************** */
+
+/*
+ * This method is the general ready state stop handler for the struct scic_sds_port
+ * object. This function will transition the ready substate machine to its
+ * final state. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_port_ready_substate_stop_handler(
+ struct scic_sds_port *port)
+{
+ sci_base_state_machine_change_state(
+ &port->state_machine,
+ SCI_BASE_PORT_STATE_STOPPING
+ );
+
+ return SCI_SUCCESS;
+}
+
+/*
+ * This method is the general ready substate complete io handler for the
+ * struct scic_sds_port object. This function decrments the outstanding request count
+ * for this port object. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_port_ready_substate_complete_io_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_remote_device *device,
+ struct scic_sds_request *io_request)
+{
+ scic_sds_port_decrement_request_count(port);
+
+ return SCI_SUCCESS;
+}
+
+static enum sci_status scic_sds_port_ready_substate_add_phy_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ enum sci_status status;
+
+ status = scic_sds_port_set_phy(port, phy);
+
+ if (status == SCI_SUCCESS) {
+ scic_sds_port_general_link_up_handler(port, phy, true);
+
+ port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
+
+ sci_base_state_machine_change_state(
+ &port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
+ );
+ }
+
+ return status;
+}
+
+
+static enum sci_status scic_sds_port_ready_substate_remove_phy_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ enum sci_status status;
+
+ status = scic_sds_port_clear_phy(port, phy);
+
+ if (status == SCI_SUCCESS) {
+ scic_sds_port_deactivate_phy(port, phy, true);
+
+ port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
+
+ sci_base_state_machine_change_state(
+ &port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
+ );
+ }
+
+ return status;
+}
+
+/*
+ * ****************************************************************************
+ * * READY SUBSTATE WAITING HANDLERS
+ * **************************************************************************** */
+
+/**
+ *
+ * @sci_port: This is the struct scic_sds_port object that which has a phy that has
+ * gone link up.
+ * @sci_phy: This is the struct scic_sds_phy object that has gone link up.
+ *
+ * This method is the ready waiting substate link up handler for the
+ * struct scic_sds_port object. This methos will report the link up condition for
+ * this port and will transition to the ready operational substate. none
+ */
+static void scic_sds_port_ready_waiting_substate_link_up_handler(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ /*
+ * Since this is the first phy going link up for the port we can just enable
+ * it and continue. */
+ scic_sds_port_activate_phy(sci_port, sci_phy, true);
+
+ sci_base_state_machine_change_state(
+ &sci_port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
+ );
+}
+
+/*
+ * This method is the ready waiting substate start io handler for the
+ * struct scic_sds_port object. The port object can not accept new requests so the
+ * request is failed. enum sci_status SCI_FAILURE_INVALID_STATE
+ */
+static enum sci_status scic_sds_port_ready_waiting_substate_start_io_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_remote_device *device,
+ struct scic_sds_request *io_request)
+{
+ return SCI_FAILURE_INVALID_STATE;
+}
+
+/*
+ * ****************************************************************************
+ * * READY SUBSTATE OPERATIONAL HANDLERS
+ * **************************************************************************** */
+
+/*
+ * This method will casue the port to reset. enum sci_status SCI_SUCCESS
+ */
+static enum
+sci_status scic_sds_port_ready_operational_substate_reset_handler(
+ struct scic_sds_port *port,
+ u32 timeout)
+{
+ enum sci_status status = SCI_FAILURE_INVALID_PHY;
+ u32 phy_index;
+ struct scic_sds_phy *selected_phy = NULL;
+
+
+ /* Select a phy on which we can send the hard reset request. */
+ for (phy_index = 0;
+ (phy_index < SCI_MAX_PHYS) && (selected_phy == NULL);
+ phy_index++) {
+ selected_phy = port->phy_table[phy_index];
+
+ if ((selected_phy != NULL) &&
+ !scic_sds_port_active_phy(port, selected_phy)) {
+ /*
+ * We found a phy but it is not ready select
+ * different phy
+ */
+ selected_phy = NULL;
+ }
+ }
+
+ /* If we have a phy then go ahead and start the reset procedure */
+ if (selected_phy != NULL) {
+ status = scic_sds_phy_reset(selected_phy);
+
+ if (status == SCI_SUCCESS) {
+ isci_timer_start(port->timer_handle, timeout);
+ port->not_ready_reason =
+ SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED;
+
+ sci_base_state_machine_change_state(
+ &port->state_machine,
+ SCI_BASE_PORT_STATE_RESETTING);
+ }
+ }
+
+ return status;
+}
+
+/**
+ * scic_sds_port_ready_operational_substate_link_up_handler() -
+ * @sci_port: This is the struct scic_sds_port object that which has a phy that has
+ * gone link up.
+ * @sci_phy: This is the struct scic_sds_phy object that has gone link up.
+ *
+ * This method is the ready operational substate link up handler for the
+ * struct scic_sds_port object. This function notifies the SCI User that the phy has
+ * gone link up. none
+ */
+static void scic_sds_port_ready_operational_substate_link_up_handler(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ scic_sds_port_general_link_up_handler(sci_port, sci_phy, true);
+}
+
+/**
+ * scic_sds_port_ready_operational_substate_link_down_handler() -
+ * @sci_port: This is the struct scic_sds_port object that which has a phy that has
+ * gone link down.
+ * @sci_phy: This is the struct scic_sds_phy object that has gone link down.
+ *
+ * This method is the ready operational substate link down handler for the
+ * struct scic_sds_port object. This function notifies the SCI User that the phy has
+ * gone link down and if this is the last phy in the port the port will change
+ * state to the ready waiting substate. none
+ */
+static void scic_sds_port_ready_operational_substate_link_down_handler(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ scic_sds_port_deactivate_phy(sci_port, sci_phy, true);
+
+ /*
+ * If there are no active phys left in the port, then transition
+ * the port to the WAITING state until such time as a phy goes
+ * link up. */
+ if (sci_port->active_phy_mask == 0)
+ sci_base_state_machine_change_state(&sci_port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_WAITING);
+}
+
+/*
+ * This method is the ready operational substate start io handler for the
+ * struct scic_sds_port object. This function incremetns the outstanding request
+ * count for this port object. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_port_ready_operational_substate_start_io_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_remote_device *device,
+ struct scic_sds_request *io_request)
+{
+ port->started_request_count++;
+ return SCI_SUCCESS;
+}
+
+/*
+ * ****************************************************************************
+ * * READY SUBSTATE OPERATIONAL HANDLERS
+ * **************************************************************************** */
+
+/*
+ * This is the default method for a port add phy request. It will report a
+ * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE
+ */
+static enum sci_status scic_sds_port_ready_configuring_substate_add_phy_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ enum sci_status status;
+
+ status = scic_sds_port_set_phy(port, phy);
+
+ if (status == SCI_SUCCESS) {
+ scic_sds_port_general_link_up_handler(port, phy, true);
+
+ /*
+ * Re-enter the configuring state since this may be the last phy in
+ * the port. */
+ sci_base_state_machine_change_state(
+ &port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
+ );
+ }
+
+ return status;
+}
+
+/*
+ * This is the default method for a port remove phy request. It will report a
+ * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE
+ */
+static enum sci_status scic_sds_port_ready_configuring_substate_remove_phy_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ enum sci_status status;
+
+ status = scic_sds_port_clear_phy(port, phy);
+
+ if (status == SCI_SUCCESS) {
+ scic_sds_port_deactivate_phy(port, phy, true);
+
+ /*
+ * Re-enter the configuring state since this may be the last phy in
+ * the port. */
+ sci_base_state_machine_change_state(
+ &port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
+ );
+ }
+
+ return status;
+}
+
+/**
+ * scic_sds_port_ready_configuring_substate_complete_io_handler() -
+ * @port: This is the port that is being requested to complete the io request.
+ * @device: This is the device on which the io is completing.
+ *
+ * This method will decrement the outstanding request count for this port. If
+ * the request count goes to 0 then the port can be reprogrammed with its new
+ * phy data.
+ */
+static enum sci_status
+scic_sds_port_ready_configuring_substate_complete_io_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_remote_device *device,
+ struct scic_sds_request *io_request)
+{
+ scic_sds_port_decrement_request_count(port);
+
+ if (port->started_request_count == 0) {
+ sci_base_state_machine_change_state(
+ &port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
+ );
+ }
+
+ return SCI_SUCCESS;
+}
+
+static enum sci_status default_port_handler(struct scic_sds_port *sci_port,
+ const char *func)
+{
+ dev_warn(sciport_to_dev(sci_port),
+ "%s: in wrong state: %d\n", func,
+ sci_base_state_machine_get_state(&sci_port->state_machine));
+ return SCI_FAILURE_INVALID_STATE;
+}
+
+static enum sci_status
+scic_sds_port_default_start_handler(struct scic_sds_port *sci_port)
+{
+ return default_port_handler(sci_port, __func__);
+}
+
+static enum sci_status
+scic_sds_port_default_stop_handler(struct scic_sds_port *sci_port)
+{
+ return default_port_handler(sci_port, __func__);
+}
+
+static enum sci_status
+scic_sds_port_default_destruct_handler(struct scic_sds_port *sci_port)
+{
+ return default_port_handler(sci_port, __func__);
+}
+
+static enum sci_status
+scic_sds_port_default_reset_handler(struct scic_sds_port *sci_port,
+ u32 timeout)
+{
+ return default_port_handler(sci_port, __func__);
+}
+
+static enum sci_status
+scic_sds_port_default_add_phy_handler(struct scic_sds_port *sci_port,
+ struct scic_sds_phy *base_phy)
+{
+ return default_port_handler(sci_port, __func__);
+}
+
+static enum sci_status
+scic_sds_port_default_remove_phy_handler(struct scic_sds_port *sci_port,
+ struct scic_sds_phy *base_phy)
+{
+ return default_port_handler(sci_port, __func__);
+}
+
+/*
+ * This is the default method for a port unsolicited frame request. It will
+ * report a warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE Is it even
+ * possible to receive an unsolicited frame directed to a port object? It
+ * seems possible if we implementing virtual functions but until then?
+ */
+static enum sci_status
+scic_sds_port_default_frame_handler(struct scic_sds_port *sci_port,
+ u32 frame_index)
+{
+ struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port);
+
+ default_port_handler(sci_port, __func__);
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return SCI_FAILURE_INVALID_STATE;
+}
+
+static enum sci_status scic_sds_port_default_event_handler(struct scic_sds_port *sci_port,
+ u32 event_code)
+{
+ return default_port_handler(sci_port, __func__);
+}
+
+static void scic_sds_port_default_link_up_handler(struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ default_port_handler(sci_port, __func__);
+}
+
+static void scic_sds_port_default_link_down_handler(struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ default_port_handler(sci_port, __func__);
+}
+
+static enum sci_status scic_sds_port_default_start_io_handler(struct scic_sds_port *sci_port,
+ struct scic_sds_remote_device *sci_dev,
+ struct scic_sds_request *sci_req)
+{
+ return default_port_handler(sci_port, __func__);
+}
+
+static enum sci_status scic_sds_port_default_complete_io_handler(struct scic_sds_port *sci_port,
+ struct scic_sds_remote_device *sci_dev,
+ struct scic_sds_request *sci_req)
+{
+ return default_port_handler(sci_port, __func__);
+}
+
+
+
+static struct scic_sds_port_state_handler
+scic_sds_port_ready_substate_handler_table[SCIC_SDS_PORT_READY_MAX_SUBSTATES] = {
+ {
+ /* SCIC_SDS_PORT_READY_SUBSTATE_WAITING */
+ scic_sds_port_default_start_handler,
+ scic_sds_port_ready_substate_stop_handler,
+ scic_sds_port_default_destruct_handler,
+ scic_sds_port_default_reset_handler,
+ scic_sds_port_ready_substate_add_phy_handler,
+ scic_sds_port_default_remove_phy_handler,
+ scic_sds_port_default_frame_handler,
+ scic_sds_port_default_event_handler,
+ scic_sds_port_ready_waiting_substate_link_up_handler,
+ scic_sds_port_default_link_down_handler,
+ scic_sds_port_ready_waiting_substate_start_io_handler,
+ scic_sds_port_ready_substate_complete_io_handler,
+ },
+
+ {
+ /* SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL */
+ scic_sds_port_default_start_handler,
+ scic_sds_port_ready_substate_stop_handler,
+ scic_sds_port_default_destruct_handler,
+ scic_sds_port_ready_operational_substate_reset_handler,
+ scic_sds_port_ready_substate_add_phy_handler,
+ scic_sds_port_ready_substate_remove_phy_handler,
+ scic_sds_port_default_frame_handler,
+ scic_sds_port_default_event_handler,
+ scic_sds_port_ready_operational_substate_link_up_handler,
+ scic_sds_port_ready_operational_substate_link_down_handler,
+ scic_sds_port_ready_operational_substate_start_io_handler,
+ scic_sds_port_ready_substate_complete_io_handler,
+ },
+
+ {
+ /* SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING */
+ scic_sds_port_default_start_handler,
+ scic_sds_port_ready_substate_stop_handler,
+ scic_sds_port_default_destruct_handler,
+ scic_sds_port_default_reset_handler,
+ scic_sds_port_ready_configuring_substate_add_phy_handler,
+ scic_sds_port_ready_configuring_substate_remove_phy_handler,
+ scic_sds_port_default_frame_handler,
+ scic_sds_port_default_event_handler,
+ scic_sds_port_default_link_up_handler,
+ scic_sds_port_default_link_down_handler,
+ scic_sds_port_default_start_io_handler,
+ scic_sds_port_ready_configuring_substate_complete_io_handler
+ }
+};
+
+/**
+ * scic_sds_port_set_ready_state_handlers() -
+ *
+ * This macro sets the port ready substate handlers.
+ */
+#define scic_sds_port_set_ready_state_handlers(port, state_id) \
+ scic_sds_port_set_state_handlers(\
+ port, &scic_sds_port_ready_substate_handler_table[(state_id)] \
+ )
+
+/*
+ * ******************************************************************************
+ * * PORT STATE PRIVATE METHODS
+ * ****************************************************************************** */
+
+/**
+ *
+ * @sci_port: This is the struct scic_sds_port object to suspend.
+ *
+ * This method will susped the port task scheduler for this port object. none
+ */
+static void
+scic_sds_port_suspend_port_task_scheduler(struct scic_sds_port *port)
+{
+ u32 pts_control_value;
+
+ pts_control_value = readl(&port->port_task_scheduler_registers->control);
+ pts_control_value |= SCU_PTSxCR_GEN_BIT(SUSPEND);
+ writel(pts_control_value, &port->port_task_scheduler_registers->control);
+}
+
+/**
+ * scic_sds_port_post_dummy_request() - post dummy/workaround request
+ * @sci_port: port to post task
+ *
+ * Prevent the hardware scheduler from posting new requests to the front
+ * of the scheduler queue causing a starvation problem for currently
+ * ongoing requests.
+ *
+ */
+static void scic_sds_port_post_dummy_request(struct scic_sds_port *sci_port)
+{
+ u32 command;
+ struct scu_task_context *task_context;
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ u16 tci = sci_port->reserved_tci;
+
+ task_context = scic_sds_controller_get_task_context_buffer(scic, tci);
+
+ task_context->abort = 0;
+
+ command = SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+ sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
+ tci;
+
+ scic_sds_controller_post_request(scic, command);
+}
+
+/**
+ * This routine will abort the dummy request. This will alow the hardware to
+ * power down parts of the silicon to save power.
+ *
+ * @sci_port: The port on which the task must be aborted.
+ *
+ */
+static void scic_sds_port_abort_dummy_request(struct scic_sds_port *sci_port)
+{
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ u16 tci = sci_port->reserved_tci;
+ struct scu_task_context *tc;
+ u32 command;
+
+ tc = scic_sds_controller_get_task_context_buffer(scic, tci);
+
+ tc->abort = 1;
+
+ command = SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT |
+ sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
+ tci;
+
+ scic_sds_controller_post_request(scic, command);
+}
+
+/**
+ *
+ * @sci_port: This is the struct scic_sds_port object to resume.
+ *
+ * This method will resume the port task scheduler for this port object. none
+ */
+static void
+scic_sds_port_resume_port_task_scheduler(struct scic_sds_port *port)
+{
+ u32 pts_control_value;
+
+ pts_control_value = readl(&port->port_task_scheduler_registers->control);
+ pts_control_value &= ~SCU_PTSxCR_GEN_BIT(SUSPEND);
+ writel(pts_control_value, &port->port_task_scheduler_registers->control);
+}
+
+/*
+ * ******************************************************************************
+ * * PORT READY SUBSTATE METHODS
+ * ****************************************************************************** */
+
+/**
+ *
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This method will perform the actions required by the struct scic_sds_port on
+ * entering the SCIC_SDS_PORT_READY_SUBSTATE_WAITING. This function checks the
+ * port for any ready phys. If there is at least one phy in a ready state then
+ * the port transitions to the ready operational substate. none
+ */
+static void scic_sds_port_ready_substate_waiting_enter(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+
+ scic_sds_port_set_ready_state_handlers(
+ sci_port, SCIC_SDS_PORT_READY_SUBSTATE_WAITING
+ );
+
+ scic_sds_port_suspend_port_task_scheduler(sci_port);
+
+ sci_port->not_ready_reason = SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS;
+
+ if (sci_port->active_phy_mask != 0) {
+ /* At least one of the phys on the port is ready */
+ sci_base_state_machine_change_state(
+ &sci_port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
+ );
+ }
+}
+
+/**
+ *
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This function will perform the actions required by the struct scic_sds_port
+ * on entering the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function sets
+ * the state handlers for the port object, notifies the SCI User that the port
+ * is ready, and resumes port operations. none
+ */
+static void scic_sds_port_ready_substate_operational_enter(void *object)
+{
+ u32 index;
+ struct scic_sds_port *sci_port = object;
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ struct isci_host *ihost = scic_to_ihost(scic);
+ struct isci_port *iport = sci_port_to_iport(sci_port);
+
+ scic_sds_port_set_ready_state_handlers(
+ sci_port,
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL);
+
+ isci_port_ready(ihost, iport);
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if (sci_port->phy_table[index]) {
+ writel(sci_port->physical_port_index,
+ &sci_port->port_pe_configuration_register[
+ sci_port->phy_table[index]->phy_index]);
+ }
+ }
+
+ scic_sds_port_update_viit_entry(sci_port);
+
+ scic_sds_port_resume_port_task_scheduler(sci_port);
+
+ /*
+ * Post the dummy task for the port so the hardware can schedule
+ * io correctly
+ */
+ scic_sds_port_post_dummy_request(sci_port);
+}
+
+/**
+ *
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This method will perform the actions required by the struct scic_sds_port on
+ * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports
+ * the port not ready and suspends the port task scheduler. none
+ */
+static void scic_sds_port_ready_substate_operational_exit(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ struct isci_host *ihost = scic_to_ihost(scic);
+ struct isci_port *iport = sci_port_to_iport(sci_port);
+
+ /*
+ * Kill the dummy task for this port if it has not yet posted
+ * the hardware will treat this as a NOP and just return abort
+ * complete.
+ */
+ scic_sds_port_abort_dummy_request(sci_port);
+
+ isci_port_not_ready(ihost, iport);
+}
+
+/*
+ * ******************************************************************************
+ * * PORT READY CONFIGURING METHODS
+ * ****************************************************************************** */
+
+/**
+ * scic_sds_port_ready_substate_configuring_enter() -
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This method will perform the actions required by the struct scic_sds_port on
+ * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports
+ * the port not ready and suspends the port task scheduler. none
+ */
+static void scic_sds_port_ready_substate_configuring_enter(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ struct isci_host *ihost = scic_to_ihost(scic);
+ struct isci_port *iport = sci_port_to_iport(sci_port);
+
+ scic_sds_port_set_ready_state_handlers(
+ sci_port,
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING);
+
+ if (sci_port->active_phy_mask == 0) {
+ isci_port_not_ready(ihost, iport);
+
+ sci_base_state_machine_change_state(
+ &sci_port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_WAITING);
+ } else if (sci_port->started_request_count == 0)
+ sci_base_state_machine_change_state(
+ &sci_port->ready_substate_machine,
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL);
+}
+
+static void scic_sds_port_ready_substate_configuring_exit(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+
+ scic_sds_port_suspend_port_task_scheduler(sci_port);
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct sci_base_state scic_sds_port_ready_substate_table[] = {
+ [SCIC_SDS_PORT_READY_SUBSTATE_WAITING] = {
+ .enter_state = scic_sds_port_ready_substate_waiting_enter,
+ },
+ [SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL] = {
+ .enter_state = scic_sds_port_ready_substate_operational_enter,
+ .exit_state = scic_sds_port_ready_substate_operational_exit
+ },
+ [SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING] = {
+ .enter_state = scic_sds_port_ready_substate_configuring_enter,
+ .exit_state = scic_sds_port_ready_substate_configuring_exit
+ },
+};
+
+/**
+ *
+ * @port: This is the struct scic_sds_port object on which the io request count will
+ * be decremented.
+ * @device: This is the struct scic_sds_remote_device object to which the io request
+ * is being directed. This parameter is not required to complete this
+ * operation.
+ * @io_request: This is the request that is being completed on this port
+ * object. This parameter is not required to complete this operation.
+ *
+ * This is a general complete io request handler for the struct scic_sds_port object.
+ * enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_port_general_complete_io_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_remote_device *device,
+ struct scic_sds_request *io_request)
+{
+ scic_sds_port_decrement_request_count(port);
+
+ return SCI_SUCCESS;
+}
+
+/**
+ * scic_sds_port_stopped_state_start_handler() - stop a port from "started"
+ *
+ * @port: This is the struct scic_sds_port object which is cast into a
+ * struct scic_sds_port object.
+ *
+ * This function takes the struct scic_sds_port from a stopped state and
+ * attempts to start it. To start a port it must have no assiged devices and
+ * it must have at least one phy assigned to it. If those conditions are
+ * met then the port can transition to the ready state.
+ * enum sci_status
+ * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION
+ * This struct scic_sds_port object could not be started because the port
+ * configuration is not valid.
+ * SCI_SUCCESS
+ * the start request is successful and the struct scic_sds_port object
+ * has transitioned to the SCI_BASE_PORT_STATE_READY.
+ */
+static enum sci_status
+scic_sds_port_stopped_state_start_handler(struct scic_sds_port *sci_port)
+{
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ struct isci_host *ihost = scic_to_ihost(scic);
+ enum sci_status status = SCI_SUCCESS;
+ u32 phy_mask;
+
+ if (sci_port->assigned_device_count > 0) {
+ /*
+ * @todo This is a start failure operation because
+ * there are still devices assigned to this port.
+ * There must be no devices assigned to a port on a
+ * start operation.
+ */
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+ }
+
+ sci_port->timer_handle =
+ isci_timer_create(ihost,
+ sci_port,
+ scic_sds_port_timeout_handler);
+
+ if (!sci_port->timer_handle)
+ return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+
+ if (sci_port->reserved_rni == SCU_DUMMY_INDEX) {
+ u16 rni = scic_sds_remote_node_table_allocate_remote_node(
+ &scic->available_remote_nodes, 1);
+
+ if (rni != SCU_DUMMY_INDEX)
+ scic_sds_port_construct_dummy_rnc(sci_port, rni);
+ else
+ status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
+ sci_port->reserved_rni = rni;
+ }
+
+ if (sci_port->reserved_tci == SCU_DUMMY_INDEX) {
+ /* Allocate a TCI and remove the sequence nibble */
+ u16 tci = scic_controller_allocate_io_tag(scic);
+
+ if (tci != SCU_DUMMY_INDEX)
+ scic_sds_port_construct_dummy_task(sci_port, tci);
+ else
+ status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
+ sci_port->reserved_tci = tci;
+ }
+
+ if (status == SCI_SUCCESS) {
+ phy_mask = scic_sds_port_get_phys(sci_port);
+
+ /*
+ * There are one or more phys assigned to this port. Make sure
+ * the port's phy mask is in fact legal and supported by the
+ * silicon.
+ */
+ if (scic_sds_port_is_phy_mask_valid(sci_port, phy_mask) == true) {
+ sci_base_state_machine_change_state(
+ &sci_port->state_machine,
+ SCI_BASE_PORT_STATE_READY);
+
+ return SCI_SUCCESS;
+ } else
+ status = SCI_FAILURE;
+ }
+
+ if (status != SCI_SUCCESS)
+ scic_sds_port_destroy_dummy_resources(sci_port);
+
+ return status;
+}
+
+/*
+ * This method takes the struct scic_sds_port that is in a stopped state and handles a
+ * stop request. This function takes no action. enum sci_status SCI_SUCCESS the
+ * stop request is successful as the struct scic_sds_port object is already stopped.
+ */
+static enum sci_status scic_sds_port_stopped_state_stop_handler(
+ struct scic_sds_port *port)
+{
+ /* We are already stopped so there is nothing to do here */
+ return SCI_SUCCESS;
+}
+
+/*
+ * This method takes the struct scic_sds_port that is in a stopped state and handles
+ * the destruct request. The stopped state is the only state in which the
+ * struct scic_sds_port can be destroyed. This function causes the port object to
+ * transition to the SCI_BASE_PORT_STATE_FINAL. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_port_stopped_state_destruct_handler(
+ struct scic_sds_port *port)
+{
+ sci_base_state_machine_stop(&port->state_machine);
+
+ return SCI_SUCCESS;
+}
+
+/*
+ * This method takes the struct scic_sds_port that is in a stopped state and handles
+ * the add phy request. In MPC mode the only time a phy can be added to a port
+ * is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status
+ * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not
+ * be added to the port. SCI_SUCCESS if the phy is added to the port.
+ */
+static enum sci_status scic_sds_port_stopped_state_add_phy_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ struct sci_sas_address port_sas_address;
+
+ /* Read the port assigned SAS Address if there is one */
+ scic_sds_port_get_sas_address(port, &port_sas_address);
+
+ if (port_sas_address.high != 0 && port_sas_address.low != 0) {
+ struct sci_sas_address phy_sas_address;
+
+ /*
+ * Make sure that the PHY SAS Address matches the SAS Address
+ * for this port. */
+ scic_sds_phy_get_sas_address(phy, &phy_sas_address);
+
+ if (
+ (port_sas_address.high != phy_sas_address.high)
+ || (port_sas_address.low != phy_sas_address.low)
+ ) {
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+ }
+ }
+
+ return scic_sds_port_set_phy(port, phy);
+}
+
+/*
+ * This method takes the struct scic_sds_port that is in a stopped state and handles
+ * the remove phy request. In MPC mode the only time a phy can be removed from
+ * a port is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status
+ * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not
+ * be added to the port. SCI_SUCCESS if the phy is added to the port.
+ */
+static enum sci_status scic_sds_port_stopped_state_remove_phy_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ return scic_sds_port_clear_phy(port, phy);
+}
+
+/*
+ * ****************************************************************************
+ * * READY STATE HANDLERS
+ * **************************************************************************** */
+
+/*
+ * ****************************************************************************
+ * * RESETTING STATE HANDLERS
+ * **************************************************************************** */
+
+/*
+ * ****************************************************************************
+ * * STOPPING STATE HANDLERS
+ * **************************************************************************** */
+
+/*
+ * This method takes the struct scic_sds_port that is in a stopping state and handles
+ * the complete io request. Should the request count reach 0 then the port
+ * object will transition to the stopped state. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_port_stopping_state_complete_io_handler(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_remote_device *device,
+ struct scic_sds_request *io_request)
+{
+ scic_sds_port_decrement_request_count(sci_port);
+
+ if (sci_port->started_request_count == 0) {
+ sci_base_state_machine_change_state(&sci_port->state_machine,
+ SCI_BASE_PORT_STATE_STOPPED);
+ }
+
+ return SCI_SUCCESS;
+}
+
+/*
+ * ****************************************************************************
+ * * RESETTING STATE HANDLERS
+ * **************************************************************************** */
+
+/**
+ *
+ * @port: This is the port object which is being requested to stop.
+ *
+ * This method will stop a failed port. This causes a transition to the
+ * stopping state. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_port_reset_state_stop_handler(
+ struct scic_sds_port *port)
+{
+ sci_base_state_machine_change_state(
+ &port->state_machine,
+ SCI_BASE_PORT_STATE_STOPPING
+ );
+
+ return SCI_SUCCESS;
+}
+
+/*
+ * This method will transition a failed port to its ready state. The port
+ * failed because a hard reset request timed out but at some time later one or
+ * more phys in the port became ready. enum sci_status SCI_SUCCESS
+ */
+static void scic_sds_port_reset_state_link_up_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ /*
+ * / @todo We should make sure that the phy that has gone link up is the same
+ * / one on which we sent the reset. It is possible that the phy on
+ * / which we sent the reset is not the one that has gone link up and we
+ * / want to make sure that phy being reset comes back. Consider the
+ * / case where a reset is sent but before the hardware processes the
+ * / reset it get a link up on the port because of a hot plug event.
+ * / because of the reset request this phy will go link down almost
+ * / immediately. */
+
+ /*
+ * In the resetting state we don't notify the user regarding
+ * link up and link down notifications. */
+ scic_sds_port_general_link_up_handler(port, phy, false);
+}
+
+/*
+ * This method process link down notifications that occur during a port reset
+ * operation. Link downs can occur during the reset operation. enum sci_status
+ * SCI_SUCCESS
+ */
+static void scic_sds_port_reset_state_link_down_handler(
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ /*
+ * In the resetting state we don't notify the user regarding
+ * link up and link down notifications. */
+ scic_sds_port_deactivate_phy(port, phy, false);
+}
+
+static struct scic_sds_port_state_handler
+scic_sds_port_state_handler_table[SCI_BASE_PORT_MAX_STATES] =
+{
+ /* SCI_BASE_PORT_STATE_STOPPED */
+ {
+ scic_sds_port_stopped_state_start_handler,
+ scic_sds_port_stopped_state_stop_handler,
+ scic_sds_port_stopped_state_destruct_handler,
+ scic_sds_port_default_reset_handler,
+ scic_sds_port_stopped_state_add_phy_handler,
+ scic_sds_port_stopped_state_remove_phy_handler,
+ scic_sds_port_default_frame_handler,
+ scic_sds_port_default_event_handler,
+ scic_sds_port_default_link_up_handler,
+ scic_sds_port_default_link_down_handler,
+ scic_sds_port_default_start_io_handler,
+ scic_sds_port_default_complete_io_handler
+ },
+ /* SCI_BASE_PORT_STATE_STOPPING */
+ {
+ scic_sds_port_default_start_handler,
+ scic_sds_port_default_stop_handler,
+ scic_sds_port_default_destruct_handler,
+ scic_sds_port_default_reset_handler,
+ scic_sds_port_default_add_phy_handler,
+ scic_sds_port_default_remove_phy_handler,
+ scic_sds_port_default_frame_handler,
+ scic_sds_port_default_event_handler,
+ scic_sds_port_default_link_up_handler,
+ scic_sds_port_default_link_down_handler,
+ scic_sds_port_default_start_io_handler,
+ scic_sds_port_stopping_state_complete_io_handler
+ },
+ /* SCI_BASE_PORT_STATE_READY */
+ {
+ scic_sds_port_default_start_handler,
+ scic_sds_port_default_stop_handler,
+ scic_sds_port_default_destruct_handler,
+ scic_sds_port_default_reset_handler,
+ scic_sds_port_default_add_phy_handler,
+ scic_sds_port_default_remove_phy_handler,
+ scic_sds_port_default_frame_handler,
+ scic_sds_port_default_event_handler,
+ scic_sds_port_default_link_up_handler,
+ scic_sds_port_default_link_down_handler,
+ scic_sds_port_default_start_io_handler,
+ scic_sds_port_general_complete_io_handler
+ },
+ /* SCI_BASE_PORT_STATE_RESETTING */
+ {
+ scic_sds_port_default_start_handler,
+ scic_sds_port_reset_state_stop_handler,
+ scic_sds_port_default_destruct_handler,
+ scic_sds_port_default_reset_handler,
+ scic_sds_port_default_add_phy_handler,
+ scic_sds_port_default_remove_phy_handler,
+ scic_sds_port_default_frame_handler,
+ scic_sds_port_default_event_handler,
+ scic_sds_port_reset_state_link_up_handler,
+ scic_sds_port_reset_state_link_down_handler,
+ scic_sds_port_default_start_io_handler,
+ scic_sds_port_general_complete_io_handler
+ },
+ /* SCI_BASE_PORT_STATE_FAILED */
+ {
+ scic_sds_port_default_start_handler,
+ scic_sds_port_default_stop_handler,
+ scic_sds_port_default_destruct_handler,
+ scic_sds_port_default_reset_handler,
+ scic_sds_port_default_add_phy_handler,
+ scic_sds_port_default_remove_phy_handler,
+ scic_sds_port_default_frame_handler,
+ scic_sds_port_default_event_handler,
+ scic_sds_port_default_link_up_handler,
+ scic_sds_port_default_link_down_handler,
+ scic_sds_port_default_start_io_handler,
+ scic_sds_port_general_complete_io_handler
+ }
+};
+
+/*
+ * ******************************************************************************
+ * * PORT STATE PRIVATE METHODS
+ * ****************************************************************************** */
+
+/**
+ *
+ * @sci_port: This is the port object which to suspend.
+ *
+ * This method will enable the SCU Port Task Scheduler for this port object but
+ * will leave the port task scheduler in a suspended state. none
+ */
+static void
+scic_sds_port_enable_port_task_scheduler(struct scic_sds_port *port)
+{
+ u32 pts_control_value;
+
+ pts_control_value = readl(&port->port_task_scheduler_registers->control);
+ pts_control_value |= SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND);
+ writel(pts_control_value, &port->port_task_scheduler_registers->control);
+}
+
+/**
+ *
+ * @sci_port: This is the port object which to resume.
+ *
+ * This method will disable the SCU port task scheduler for this port object.
+ * none
+ */
+static void
+scic_sds_port_disable_port_task_scheduler(struct scic_sds_port *port)
+{
+ u32 pts_control_value;
+
+ pts_control_value = readl(&port->port_task_scheduler_registers->control);
+ pts_control_value &=
+ ~(SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND));
+ writel(pts_control_value, &port->port_task_scheduler_registers->control);
+}
+
+static void scic_sds_port_post_dummy_remote_node(struct scic_sds_port *sci_port)
+{
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ u8 phys_index = sci_port->physical_port_index;
+ union scu_remote_node_context *rnc;
+ u16 rni = sci_port->reserved_rni;
+ u32 command;
+
+ rnc = &scic->remote_node_context_table[rni];
+ rnc->ssp.is_valid = true;
+
+ command = SCU_CONTEXT_COMMAND_POST_RNC_32 |
+ phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
+
+ scic_sds_controller_post_request(scic, command);
+
+ /* ensure hardware has seen the post rnc command and give it
+ * ample time to act before sending the suspend
+ */
+ readl(&scic->smu_registers->interrupt_status); /* flush */
+ udelay(10);
+
+ command = SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX |
+ phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
+
+ scic_sds_controller_post_request(scic, command);
+}
+
+static void scic_sds_port_invalidate_dummy_remote_node(struct scic_sds_port *sci_port)
+{
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ u8 phys_index = sci_port->physical_port_index;
+ union scu_remote_node_context *rnc;
+ u16 rni = sci_port->reserved_rni;
+ u32 command;
+
+ rnc = &scic->remote_node_context_table[rni];
+
+ rnc->ssp.is_valid = false;
+
+ /* ensure the preceding tc abort request has reached the
+ * controller and give it ample time to act before posting the rnc
+ * invalidate
+ */
+ readl(&scic->smu_registers->interrupt_status); /* flush */
+ udelay(10);
+
+ command = SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE |
+ phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
+
+ scic_sds_controller_post_request(scic, command);
+}
+
+/*
+ * ******************************************************************************
+ * * PORT STATE METHODS
+ * ****************************************************************************** */
+
+/**
+ *
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This method will perform the actions required by the struct scic_sds_port on
+ * entering the SCI_BASE_PORT_STATE_STOPPED. This function sets the stopped
+ * state handlers for the struct scic_sds_port object and disables the port task
+ * scheduler in the hardware. none
+ */
+static void scic_sds_port_stopped_state_enter(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+
+ scic_sds_port_set_base_state_handlers(
+ sci_port, SCI_BASE_PORT_STATE_STOPPED
+ );
+
+ if (
+ SCI_BASE_PORT_STATE_STOPPING
+ == sci_port->state_machine.previous_state_id
+ ) {
+ /*
+ * If we enter this state becasuse of a request to stop
+ * the port then we want to disable the hardwares port
+ * task scheduler. */
+ scic_sds_port_disable_port_task_scheduler(sci_port);
+ }
+}
+
+/**
+ *
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This method will perform the actions required by the struct scic_sds_port on
+ * exiting the SCI_BASE_STATE_STOPPED. This function enables the SCU hardware
+ * port task scheduler. none
+ */
+static void scic_sds_port_stopped_state_exit(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+
+ /* Enable and suspend the port task scheduler */
+ scic_sds_port_enable_port_task_scheduler(sci_port);
+}
+
+/**
+ * scic_sds_port_ready_state_enter -
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This method will perform the actions required by the struct scic_sds_port on
+ * entering the SCI_BASE_PORT_STATE_READY. This function sets the ready state
+ * handlers for the struct scic_sds_port object, reports the port object as
+ * not ready and starts the ready substate machine. none
+ */
+static void scic_sds_port_ready_state_enter(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ struct isci_host *ihost = scic_to_ihost(scic);
+ struct isci_port *iport = sci_port_to_iport(sci_port);
+ u32 prev_state;
+
+ /* Put the ready state handlers in place though they will not be there long */
+ scic_sds_port_set_base_state_handlers(sci_port, SCI_BASE_PORT_STATE_READY);
+
+ prev_state = sci_port->state_machine.previous_state_id;
+ if (prev_state == SCI_BASE_PORT_STATE_RESETTING)
+ isci_port_hard_reset_complete(iport, SCI_SUCCESS);
+ else
+ isci_port_not_ready(ihost, iport);
+
+ /* Post and suspend the dummy remote node context for this port. */
+ scic_sds_port_post_dummy_remote_node(sci_port);
+
+ /* Start the ready substate machine */
+ sci_base_state_machine_start(&sci_port->ready_substate_machine);
+}
+
+static void scic_sds_port_ready_state_exit(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+
+ sci_base_state_machine_stop(&sci_port->ready_substate_machine);
+ scic_sds_port_invalidate_dummy_remote_node(sci_port);
+}
+
+/**
+ *
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This method will perform the actions required by the struct scic_sds_port on
+ * entering the SCI_BASE_PORT_STATE_RESETTING. This function sets the resetting
+ * state handlers for the struct scic_sds_port object. none
+ */
+static void scic_sds_port_resetting_state_enter(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+
+ scic_sds_port_set_base_state_handlers(
+ sci_port, SCI_BASE_PORT_STATE_RESETTING
+ );
+}
+
+/**
+ *
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This function will perform the actions required by the
+ * struct scic_sds_port on
+ * exiting the SCI_BASE_STATE_RESETTING. This function does nothing. none
+ */
+static inline void scic_sds_port_resetting_state_exit(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+
+ isci_timer_stop(sci_port->timer_handle);
+}
+
+/**
+ *
+ * @object: This is the void object which is cast to a
+ * struct scic_sds_port object.
+ *
+ * This method will perform the actions required by the struct scic_sds_port on
+ * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping
+ * state handlers for the struct scic_sds_port object. none
+ */
+static void scic_sds_port_stopping_state_enter(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+
+ scic_sds_port_set_base_state_handlers(
+ sci_port, SCI_BASE_PORT_STATE_STOPPING
+ );
+}
+
+/**
+ *
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This function will perform the actions required by the
+ * struct scic_sds_port on
+ * exiting the SCI_BASE_STATE_STOPPING. This function does nothing. none
+ */
+static inline void
+scic_sds_port_stopping_state_exit(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+
+ isci_timer_stop(sci_port->timer_handle);
+
+ scic_sds_port_destroy_dummy_resources(sci_port);
+}
+
+/**
+ *
+ * @object: This is the object which is cast to a struct scic_sds_port object.
+ *
+ * This function will perform the actions required by the
+ * struct scic_sds_port on
+ * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping
+ * state handlers for the struct scic_sds_port object. none
+ */
+static void scic_sds_port_failed_state_enter(void *object)
+{
+ struct scic_sds_port *sci_port = object;
+ struct isci_port *iport = sci_port_to_iport(sci_port);
+
+ scic_sds_port_set_base_state_handlers(sci_port,
+ SCI_BASE_PORT_STATE_FAILED);
+
+ isci_port_hard_reset_complete(iport, SCI_FAILURE_TIMEOUT);
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct sci_base_state scic_sds_port_state_table[] = {
+ [SCI_BASE_PORT_STATE_STOPPED] = {
+ .enter_state = scic_sds_port_stopped_state_enter,
+ .exit_state = scic_sds_port_stopped_state_exit
+ },
+ [SCI_BASE_PORT_STATE_STOPPING] = {
+ .enter_state = scic_sds_port_stopping_state_enter,
+ .exit_state = scic_sds_port_stopping_state_exit
+ },
+ [SCI_BASE_PORT_STATE_READY] = {
+ .enter_state = scic_sds_port_ready_state_enter,
+ .exit_state = scic_sds_port_ready_state_exit
+ },
+ [SCI_BASE_PORT_STATE_RESETTING] = {
+ .enter_state = scic_sds_port_resetting_state_enter,
+ .exit_state = scic_sds_port_resetting_state_exit
+ },
+ [SCI_BASE_PORT_STATE_FAILED] = {
+ .enter_state = scic_sds_port_failed_state_enter,
+ }
+};
+
+void scic_sds_port_construct(struct scic_sds_port *sci_port, u8 index,
+ struct scic_sds_controller *scic)
+{
+ sci_base_state_machine_construct(&sci_port->state_machine,
+ sci_port,
+ scic_sds_port_state_table,
+ SCI_BASE_PORT_STATE_STOPPED);
+
+ sci_base_state_machine_start(&sci_port->state_machine);
+
+ sci_base_state_machine_construct(&sci_port->ready_substate_machine,
+ sci_port,
+ scic_sds_port_ready_substate_table,
+ SCIC_SDS_PORT_READY_SUBSTATE_WAITING);
+
+ sci_port->logical_port_index = SCIC_SDS_DUMMY_PORT;
+ sci_port->physical_port_index = index;
+ sci_port->active_phy_mask = 0;
+
+ sci_port->owning_controller = scic;
+
+ sci_port->started_request_count = 0;
+ sci_port->assigned_device_count = 0;
+
+ sci_port->reserved_rni = SCU_DUMMY_INDEX;
+ sci_port->reserved_tci = SCU_DUMMY_INDEX;
+
+ sci_port->timer_handle = NULL;
+ sci_port->port_task_scheduler_registers = NULL;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++)
+ sci_port->phy_table[index] = NULL;
+}
+
+void isci_port_init(struct isci_port *iport, struct isci_host *ihost, int index)
+{
+ INIT_LIST_HEAD(&iport->remote_dev_list);
+ INIT_LIST_HEAD(&iport->domain_dev_list);
+ spin_lock_init(&iport->state_lock);
+ init_completion(&iport->start_complete);
+ iport->isci_host = ihost;
+ isci_port_change_state(iport, isci_freed);
+}
+
+/**
+ * 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_bc_change_received(struct isci_host *ihost,
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
+
+ dev_dbg(&ihost->pdev->dev, "%s: iphy = %p, sas_phy = %p\n",
+ __func__, iphy, &iphy->sas_phy);
+
+ ihost->sas_ha.notify_port_event(&iphy->sas_phy, PORTE_BROADCAST_RCVD);
+ scic_port_enable_broadcast_change_notification(sci_port);
+}
+
+void scic_sds_port_broadcast_change_received(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ struct scic_sds_controller *scic = sci_port->owning_controller;
+ struct isci_host *ihost = scic_to_ihost(scic);
+
+ /* notify the user. */
+ isci_port_bc_change_received(ihost, sci_port, sci_phy);
+}
+
+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, 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_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);
}
#include <scsi/libsas.h>
#include "isci.h"
-#include "scic_sds_port.h"
+#include "sas.h"
+#include "phy.h"
+
+#define SCIC_SDS_DUMMY_PORT 0xFF
struct isci_phy;
struct isci_host;
isci_stopped = 0x05,
};
+/**
+ * struct scic_sds_port
+ *
+ * The core port object provides the the abstraction for an SCU port.
+ */
+struct scic_sds_port {
+
+ /**
+ * This field contains the information for the base port state machine.
+ */
+ struct sci_base_state_machine state_machine;
+
+ /**
+ * This field is the port index that is reported to the SCI USER.
+ * This allows the actual hardware physical port to change without
+ * the SCI USER getting a different answer for the get port index.
+ */
+ u8 logical_port_index;
+
+ /**
+ * This field is the port index used to program the SCU hardware.
+ */
+ u8 physical_port_index;
+
+ /**
+ * This field contains the active phy mask for the port.
+ * This mask is used in conjunction with the phy state to determine
+ * which phy to select for some port operations.
+ */
+ u8 active_phy_mask;
+
+ u16 reserved_rni;
+ u16 reserved_tci;
+
+ /**
+ * This field contains the count of the io requests started on this port
+ * object. It is used to control controller shutdown.
+ */
+ u32 started_request_count;
+
+ /**
+ * This field contains the number of devices assigned to this port.
+ * It is used to control port start requests.
+ */
+ u32 assigned_device_count;
+
+ /**
+ * This field contains the reason for the port not going ready. It is
+ * assigned in the state handlers and used in the state transition.
+ */
+ u32 not_ready_reason;
+
+ /**
+ * This field is the table of phys assigned to the port.
+ */
+ struct scic_sds_phy *phy_table[SCI_MAX_PHYS];
+
+ /**
+ * This field is a pointer back to the controller that owns this
+ * port object.
+ */
+ struct scic_sds_controller *owning_controller;
+
+ /**
+ * This field contains the port start/stop timer handle.
+ */
+ void *timer_handle;
+
+ /**
+ * This field points to the current set of state handlers for this port
+ * object. These state handlers are assigned at each enter state of
+ * the state machine.
+ */
+ struct scic_sds_port_state_handler *state_handlers;
+
+ /**
+ * This field is the ready substate machine for the port.
+ */
+ struct sci_base_state_machine ready_substate_machine;
+
+ /* / Memory mapped hardware register space */
+
+ /**
+ * This field is the pointer to the port task scheduler registers
+ * for the SCU hardware.
+ */
+ struct scu_port_task_scheduler_registers __iomem
+ *port_task_scheduler_registers;
+
+ /**
+ * This field is identical for all port objects and points to the port
+ * task scheduler group PE configuration registers.
+ * It is used to assign PEs to a port.
+ */
+ u32 __iomem *port_pe_configuration_register;
+
+ /**
+ * This field is the VIIT register space for ths port object.
+ */
+ struct scu_viit_entry __iomem *viit_registers;
+
+};
+
+
+
/**
* struct isci_port - This class represents the port object used to internally
* represent libsas port objects. It also keeps a list of remote device
return iport;
}
-enum isci_status isci_port_get_state(
- struct isci_port *isci_port);
+enum scic_port_not_ready_reason_code {
+ SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS,
+ SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED,
+ SCIC_PORT_NOT_READY_INVALID_PORT_CONFIGURATION,
+ SCIC_PORT_NOT_READY_RECONFIGURING,
+
+ SCIC_PORT_NOT_READY_REASON_CODE_MAX
+};
+
+struct scic_port_end_point_properties {
+ struct sci_sas_address sas_address;
+ struct scic_phy_proto protocols;
+};
+
+struct scic_port_properties {
+ u32 index;
+ struct scic_port_end_point_properties local;
+ struct scic_port_end_point_properties remote;
+ u32 phy_mask;
+};
+
+/**
+ * enum SCIC_SDS_PORT_READY_SUBSTATES -
+ *
+ * This enumeration depicts all of the states for the core port ready substate
+ * machine.
+ */
+enum scic_sds_port_ready_substates {
+ /**
+ * The substate where the port is started and ready but has no
+ * active phys.
+ */
+ SCIC_SDS_PORT_READY_SUBSTATE_WAITING,
+
+ /**
+ * The substate where the port is started and ready and there is
+ * at least one phy operational.
+ */
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL,
+
+ /**
+ * The substate where the port is started and there was an
+ * add/remove phy event. This state is only used in Automatic
+ * Port Configuration Mode (APC)
+ */
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING,
+
+ SCIC_SDS_PORT_READY_MAX_SUBSTATES
+};
+
+/**
+ * enum scic_sds_port_states - This enumeration depicts all the states for the
+ * common port state machine.
+ *
+ *
+ */
+enum scic_sds_port_states {
+ /**
+ * This state indicates that the port has successfully been stopped.
+ * In this state no new IO operations are permitted.
+ * This state is entered from the STOPPING state.
+ */
+ SCI_BASE_PORT_STATE_STOPPED,
+
+ /**
+ * This state indicates that the port is in the process of stopping.
+ * In this state no new IO operations are permitted, but existing IO
+ * operations are allowed to complete.
+ * This state is entered from the READY state.
+ */
+ SCI_BASE_PORT_STATE_STOPPING,
+
+ /**
+ * This state indicates the port is now ready. Thus, the user is
+ * able to perform IO operations on this port.
+ * This state is entered from the STARTING state.
+ */
+ SCI_BASE_PORT_STATE_READY,
+
+ /**
+ * This state indicates the port is in the process of performing a hard
+ * reset. Thus, the user is unable to perform IO operations on this
+ * port.
+ * This state is entered from the READY state.
+ */
+ SCI_BASE_PORT_STATE_RESETTING,
+
+ /**
+ * This state indicates the port has failed a reset request. This state
+ * is entered when a port reset request times out.
+ * This state is entered from the RESETTING state.
+ */
+ SCI_BASE_PORT_STATE_FAILED,
+
+ SCI_BASE_PORT_MAX_STATES
+
+};
+
+struct scic_sds_remote_device;
+struct scic_sds_request;
+
+typedef enum sci_status (*scic_sds_port_handler_t)(struct scic_sds_port *);
-void isci_port_formed(
- struct asd_sas_phy *);
+typedef enum sci_status (*scic_sds_port_phy_handler_t)(struct scic_sds_port *,
+ struct scic_sds_phy *);
-void isci_port_deformed(
- struct asd_sas_phy *);
+typedef enum sci_status (*scic_sds_port_reset_handler_t)(struct scic_sds_port *,
+ u32 timeout);
-void isci_port_bc_change_received(
- struct isci_host *isci_host,
- struct scic_sds_port *port,
- struct scic_sds_phy *phy);
+typedef enum sci_status (*scic_sds_port_event_handler_t)(struct scic_sds_port *, u32);
-void isci_port_link_up(
- struct isci_host *isci_host,
- struct scic_sds_port *port,
- struct scic_sds_phy *phy);
+typedef enum sci_status (*scic_sds_port_frame_handler_t)(struct scic_sds_port *, u32);
-void isci_port_link_down(
- struct isci_host *isci_host,
- struct isci_phy *isci_phy,
- struct isci_port *port);
+typedef void (*scic_sds_port_link_handler_t)(struct scic_sds_port *, struct scic_sds_phy *);
-void isci_port_ready(
- struct isci_host *isci_host,
+typedef enum sci_status (*scic_sds_port_io_request_handler_t)(struct scic_sds_port *,
+ struct scic_sds_remote_device *,
+ struct scic_sds_request *);
+
+struct scic_sds_port_state_handler {
+ /**
+ * The start_handler specifies the method invoked when a user
+ * attempts to start a port.
+ */
+ scic_sds_port_handler_t start_handler;
+
+ /**
+ * The stop_handler specifies the method invoked when a user
+ * attempts to stop a port.
+ */
+ scic_sds_port_handler_t stop_handler;
+
+ /**
+ * The destruct_handler specifies the method invoked when attempting to
+ * destruct a port.
+ */
+ scic_sds_port_handler_t destruct_handler;
+
+ /**
+ * The reset_handler specifies the method invoked when a user
+ * attempts to hard reset a port.
+ */
+ scic_sds_port_reset_handler_t reset_handler;
+
+ /**
+ * The add_phy_handler specifies the method invoked when a user
+ * attempts to add another phy into the port.
+ */
+ scic_sds_port_phy_handler_t add_phy_handler;
+
+ /**
+ * The remove_phy_handler specifies the method invoked when a user
+ * attempts to remove a phy from the port.
+ */
+ scic_sds_port_phy_handler_t remove_phy_handler;
+
+ scic_sds_port_frame_handler_t frame_handler;
+ scic_sds_port_event_handler_t event_handler;
+
+ scic_sds_port_link_handler_t link_up_handler;
+ scic_sds_port_link_handler_t link_down_handler;
+
+ scic_sds_port_io_request_handler_t start_io_handler;
+ scic_sds_port_io_request_handler_t complete_io_handler;
+
+};
+
+/**
+ * scic_sds_port_get_controller() -
+ *
+ * Helper macro to get the owning controller of this port
+ */
+#define scic_sds_port_get_controller(this_port) \
+ ((this_port)->owning_controller)
+
+/**
+ * scic_sds_port_set_base_state_handlers() -
+ *
+ * This macro will change the state handlers to those of the specified state id
+ */
+#define scic_sds_port_set_base_state_handlers(this_port, state_id) \
+ scic_sds_port_set_state_handlers(\
+ (this_port), &scic_sds_port_state_handler_table[(state_id)])
+
+/**
+ * scic_sds_port_set_state_handlers() -
+ *
+ * Helper macro to set the port object state handlers
+ */
+#define scic_sds_port_set_state_handlers(this_port, handlers) \
+ ((this_port)->state_handlers = (handlers))
+
+/**
+ * scic_sds_port_get_index() -
+ *
+ * This macro returns the physical port index for this port object
+ */
+#define scic_sds_port_get_index(this_port) \
+ ((this_port)->physical_port_index)
+
+
+static inline void scic_sds_port_decrement_request_count(struct scic_sds_port *sci_port)
+{
+ if (WARN_ONCE(sci_port->started_request_count == 0,
+ "%s: tried to decrement started_request_count past 0!?",
+ __func__))
+ /* pass */;
+ else
+ sci_port->started_request_count--;
+}
+
+#define scic_sds_port_active_phy(port, phy) \
+ (((port)->active_phy_mask & (1 << (phy)->phy_index)) != 0)
+
+void scic_sds_port_construct(
+ struct scic_sds_port *sci_port,
+ u8 port_index,
+ struct scic_sds_controller *scic);
+
+enum sci_status scic_sds_port_initialize(
+ struct scic_sds_port *sci_port,
+ void __iomem *port_task_scheduler_registers,
+ void __iomem *port_configuration_regsiter,
+ void __iomem *viit_registers);
+
+enum sci_status scic_sds_port_add_phy(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy);
+
+enum sci_status scic_sds_port_remove_phy(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy);
+
+void scic_sds_port_setup_transports(
+ struct scic_sds_port *sci_port,
+ u32 device_id);
+
+
+void scic_sds_port_deactivate_phy(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy,
+ bool do_notify_user);
+
+bool scic_sds_port_link_detected(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy);
+
+void scic_sds_port_link_up(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy);
+
+void scic_sds_port_link_down(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy);
+
+enum sci_status scic_sds_port_start_io(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_remote_device *sci_dev,
+ struct scic_sds_request *sci_req);
+
+enum sci_status scic_sds_port_complete_io(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_remote_device *sci_dev,
+ struct scic_sds_request *sci_req);
+
+enum sas_linkrate scic_sds_port_get_max_allowed_speed(
+ struct scic_sds_port *sci_port);
+
+void scic_sds_port_broadcast_change_received(
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy);
+
+bool scic_sds_port_is_valid_phy_assignment(
+ struct scic_sds_port *sci_port,
+ u32 phy_index);
+
+void scic_sds_port_get_sas_address(
+ struct scic_sds_port *sci_port,
+ struct sci_sas_address *sas_address);
+
+void scic_sds_port_get_attached_sas_address(
+ struct scic_sds_port *sci_port,
+ struct sci_sas_address *sas_address);
+
+enum isci_status isci_port_get_state(
struct isci_port *isci_port);
-void isci_port_not_ready(
- struct isci_host *isci_host,
- struct isci_port *port);
+void isci_port_formed(struct asd_sas_phy *);
+void isci_port_deformed(struct asd_sas_phy *);
void isci_port_init(
struct isci_port *port,
struct isci_host *host,
int index);
-void isci_port_hard_reset_complete(
- struct isci_port *isci_port,
- enum sci_status completion_status);
-
int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
struct isci_phy *iphy);
-
-void isci_port_stop_complete(
- struct scic_sds_controller *scic,
- struct scic_sds_port *sci_port,
- enum sci_status completion_status);
-
#endif /* !defined(_ISCI_PORT_H_) */
-
--- /dev/null
+/*
+ * 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.
+ */
+
+#include "host.h"
+#include "timers.h"
+
+#define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT (10)
+#define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT (10)
+#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION (100)
+
+enum SCIC_SDS_APC_ACTIVITY {
+ SCIC_SDS_APC_SKIP_PHY,
+ SCIC_SDS_APC_ADD_PHY,
+ SCIC_SDS_APC_START_TIMER,
+
+ SCIC_SDS_APC_ACTIVITY_MAX
+};
+
+/*
+ * ******************************************************************************
+ * General port configuration agent routines
+ * ****************************************************************************** */
+
+/**
+ *
+ * @address_one: A SAS Address to be compared.
+ * @address_two: A SAS Address to be compared.
+ *
+ * Compare the two SAS Address and if SAS Address One is greater than SAS
+ * Address Two then return > 0 else if SAS Address One is less than SAS Address
+ * Two return < 0 Otherwise they are the same return 0 A signed value of x > 0
+ * > y where x is returned for Address One > Address Two y is returned for
+ * Address One < Address Two 0 is returned ofr Address One = Address Two
+ */
+static s32 sci_sas_address_compare(
+ struct sci_sas_address address_one,
+ struct sci_sas_address address_two)
+{
+ if (address_one.high > address_two.high) {
+ return 1;
+ } else if (address_one.high < address_two.high) {
+ return -1;
+ } else if (address_one.low > address_two.low) {
+ return 1;
+ } else if (address_one.low < address_two.low) {
+ return -1;
+ }
+
+ /* The two SAS Address must be identical */
+ return 0;
+}
+
+/**
+ *
+ * @controller: The controller object used for the port search.
+ * @phy: The phy object to match.
+ *
+ * This routine will find a matching port for the phy. This means that the
+ * port and phy both have the same broadcast sas address and same received sas
+ * address. The port address or the NULL if there is no matching
+ * port. port address if the port can be found to match the phy.
+ * NULL if there is no matching port for the phy.
+ */
+static struct scic_sds_port *scic_sds_port_configuration_agent_find_port(
+ struct scic_sds_controller *scic,
+ struct scic_sds_phy *phy)
+{
+ u8 i;
+ struct sci_sas_address port_sas_address;
+ struct sci_sas_address port_attached_device_address;
+ struct sci_sas_address phy_sas_address;
+ struct sci_sas_address phy_attached_device_address;
+
+ /*
+ * Since this phy can be a member of a wide port check to see if one or
+ * more phys match the sent and received SAS address as this phy in which
+ * case it should participate in the same port.
+ */
+ scic_sds_phy_get_sas_address(phy, &phy_sas_address);
+ scic_sds_phy_get_attached_sas_address(phy, &phy_attached_device_address);
+
+ for (i = 0; i < scic->logical_port_entries; i++) {
+ struct isci_host *ihost = scic_to_ihost(scic);
+ struct scic_sds_port *sci_port = &ihost->ports[i].sci;
+
+ scic_sds_port_get_sas_address(sci_port, &port_sas_address);
+ scic_sds_port_get_attached_sas_address(sci_port, &port_attached_device_address);
+
+ if (sci_sas_address_compare(port_sas_address, phy_sas_address) == 0 &&
+ sci_sas_address_compare(port_attached_device_address, phy_attached_device_address) == 0)
+ return sci_port;
+ }
+
+ return NULL;
+}
+
+/**
+ *
+ * @controller: This is the controller object that contains the port agent
+ * @port_agent: This is the port configruation agent for the controller.
+ *
+ * This routine will validate the port configuration is correct for the SCU
+ * hardware. The SCU hardware allows for port configurations as follows. LP0
+ * -> (PE0), (PE0, PE1), (PE0, PE1, PE2, PE3) LP1 -> (PE1) LP2 -> (PE2), (PE2,
+ * PE3) LP3 -> (PE3) enum sci_status SCI_SUCCESS the port configuration is valid for
+ * this port configuration agent. SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION
+ * the port configuration is not valid for this port configuration agent.
+ */
+static enum sci_status scic_sds_port_configuration_agent_validate_ports(
+ struct scic_sds_controller *controller,
+ struct scic_sds_port_configuration_agent *port_agent)
+{
+ struct isci_host *ihost = scic_to_ihost(controller);
+ struct sci_sas_address first_address;
+ struct sci_sas_address second_address;
+
+ /*
+ * Sanity check the max ranges for all the phys the max index
+ * is always equal to the port range index */
+ if (port_agent->phy_valid_port_range[0].max_index != 0 ||
+ port_agent->phy_valid_port_range[1].max_index != 1 ||
+ port_agent->phy_valid_port_range[2].max_index != 2 ||
+ port_agent->phy_valid_port_range[3].max_index != 3)
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+
+ /*
+ * This is a request to configure a single x4 port or at least attempt
+ * to make all the phys into a single port */
+ if (port_agent->phy_valid_port_range[0].min_index == 0 &&
+ port_agent->phy_valid_port_range[1].min_index == 0 &&
+ port_agent->phy_valid_port_range[2].min_index == 0 &&
+ port_agent->phy_valid_port_range[3].min_index == 0)
+ return SCI_SUCCESS;
+
+ /*
+ * This is a degenerate case where phy 1 and phy 2 are assigned
+ * to the same port this is explicitly disallowed by the hardware
+ * unless they are part of the same x4 port and this condition was
+ * already checked above. */
+ if (port_agent->phy_valid_port_range[2].min_index == 1) {
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+ }
+
+ /*
+ * PE0 and PE3 can never have the same SAS Address unless they
+ * are part of the same x4 wide port and we have already checked
+ * for this condition. */
+ scic_sds_phy_get_sas_address(&ihost->phys[0].sci, &first_address);
+ scic_sds_phy_get_sas_address(&ihost->phys[3].sci, &second_address);
+
+ if (sci_sas_address_compare(first_address, second_address) == 0) {
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+ }
+
+ /*
+ * PE0 and PE1 are configured into a 2x1 ports make sure that the
+ * SAS Address for PE0 and PE2 are different since they can not be
+ * part of the same port. */
+ if (port_agent->phy_valid_port_range[0].min_index == 0 &&
+ port_agent->phy_valid_port_range[1].min_index == 1) {
+ scic_sds_phy_get_sas_address(&ihost->phys[0].sci, &first_address);
+ scic_sds_phy_get_sas_address(&ihost->phys[2].sci, &second_address);
+
+ if (sci_sas_address_compare(first_address, second_address) == 0) {
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+ }
+ }
+
+ /*
+ * PE2 and PE3 are configured into a 2x1 ports make sure that the
+ * SAS Address for PE1 and PE3 are different since they can not be
+ * part of the same port. */
+ if (port_agent->phy_valid_port_range[2].min_index == 2 &&
+ port_agent->phy_valid_port_range[3].min_index == 3) {
+ scic_sds_phy_get_sas_address(&ihost->phys[1].sci, &first_address);
+ scic_sds_phy_get_sas_address(&ihost->phys[3].sci, &second_address);
+
+ if (sci_sas_address_compare(first_address, second_address) == 0) {
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+ }
+ }
+
+ return SCI_SUCCESS;
+}
+
+/*
+ * ******************************************************************************
+ * Manual port configuration agent routines
+ * ****************************************************************************** */
+
+/**
+ *
+ *
+ * This routine will verify that all of the phys in the same port are using the
+ * same SAS address.
+ */
+static enum sci_status scic_sds_mpc_agent_validate_phy_configuration(
+ struct scic_sds_controller *controller,
+ struct scic_sds_port_configuration_agent *port_agent)
+{
+ struct isci_host *ihost = scic_to_ihost(controller);
+ u32 phy_mask;
+ u32 assigned_phy_mask;
+ struct sci_sas_address sas_address;
+ struct sci_sas_address phy_assigned_address;
+ u8 port_index;
+ u8 phy_index;
+
+ assigned_phy_mask = 0;
+ sas_address.high = 0;
+ sas_address.low = 0;
+
+ for (port_index = 0; port_index < SCI_MAX_PORTS; port_index++) {
+ phy_mask = controller->oem_parameters.sds1.ports[port_index].phy_mask;
+
+ if (!phy_mask)
+ continue;
+ /*
+ * Make sure that one or more of the phys were not already assinged to
+ * a different port. */
+ if ((phy_mask & ~assigned_phy_mask) == 0) {
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+ }
+
+ /* Find the starting phy index for this round through the loop */
+ for (phy_index = 0; phy_index < SCI_MAX_PHYS; phy_index++) {
+ if ((phy_mask & (1 << phy_index)) == 0)
+ continue;
+ scic_sds_phy_get_sas_address(&ihost->phys[phy_index].sci,
+ &sas_address);
+
+ /*
+ * The phy_index can be used as the starting point for the
+ * port range since the hardware starts all logical ports
+ * the same as the PE index. */
+ port_agent->phy_valid_port_range[phy_index].min_index = port_index;
+ port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+
+ if (phy_index != port_index) {
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+ }
+
+ break;
+ }
+
+ /*
+ * See how many additional phys are being added to this logical port.
+ * Note: We have not moved the current phy_index so we will actually
+ * compare the startting phy with itself.
+ * This is expected and required to add the phy to the port. */
+ while (phy_index < SCI_MAX_PHYS) {
+ if ((phy_mask & (1 << phy_index)) == 0)
+ continue;
+ scic_sds_phy_get_sas_address(&ihost->phys[phy_index].sci,
+ &phy_assigned_address);
+
+ if (sci_sas_address_compare(sas_address, phy_assigned_address) != 0) {
+ /*
+ * The phy mask specified that this phy is part of the same port
+ * as the starting phy and it is not so fail this configuration */
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+ }
+
+ port_agent->phy_valid_port_range[phy_index].min_index = port_index;
+ port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+
+ scic_sds_port_add_phy(&ihost->ports[port_index].sci,
+ &ihost->phys[phy_index].sci);
+
+ assigned_phy_mask |= (1 << phy_index);
+ }
+
+ phy_index++;
+ }
+
+ return scic_sds_port_configuration_agent_validate_ports(controller, port_agent);
+}
+
+/**
+ *
+ *
+ * This timer routine is used to allow the SCI User to rediscover or change
+ * device objects before a new series of link up notifications because a link
+ * down has allowed a better port configuration.
+ */
+static void scic_sds_mpc_agent_timeout_handler(void *object)
+{
+ u8 index;
+ struct scic_sds_controller *scic = object;
+ struct isci_host *ihost = scic_to_ihost(scic);
+ struct scic_sds_port_configuration_agent *port_agent = &scic->port_agent;
+ u16 configure_phy_mask;
+
+ port_agent->timer_pending = false;
+
+ /* Find the mask of phys that are reported read but as yet unconfigured into a port */
+ configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ struct scic_sds_phy *sci_phy = &ihost->phys[index].sci;
+
+ if (configure_phy_mask & (1 << index)) {
+ port_agent->link_up_handler(scic, port_agent,
+ scic_sds_phy_get_port(sci_phy),
+ sci_phy);
+ }
+ }
+}
+
+/**
+ *
+ * @controller: This is the controller object that receives the link up
+ * notification.
+ * @port: This is the port object associated with the phy. If the is no
+ * associated port this is an NULL.
+ * @phy: This is the phy object which has gone ready.
+ *
+ * This method handles the manual port configuration link up notifications.
+ * Since all ports and phys are associate at initialization time we just turn
+ * around and notifiy the port object that there is a link up. If this PHY is
+ * not associated with a port there is no action taken. Is it possible to get a
+ * link up notification from a phy that has no assocoated port?
+ */
+static void scic_sds_mpc_agent_link_up(
+ struct scic_sds_controller *controller,
+ struct scic_sds_port_configuration_agent *port_agent,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ /*
+ * If the port has an invalid handle then the phy was not assigned to
+ * a port. This is because the phy was not given the same SAS Address
+ * as the other PHYs in the port. */
+ if (port != NULL) {
+ port_agent->phy_ready_mask |= (1 << scic_sds_phy_get_index(phy));
+
+ scic_sds_port_link_up(port, phy);
+
+ if ((port->active_phy_mask & (1 << scic_sds_phy_get_index(phy))) != 0) {
+ port_agent->phy_configured_mask |= (1 << scic_sds_phy_get_index(phy));
+ }
+ }
+}
+
+/**
+ *
+ * @controller: This is the controller object that receives the link down
+ * notification.
+ * @port: This is the port object associated with the phy. If the is no
+ * associated port this is an NULL. The port is an invalid
+ * handle only if the phy was never port of this port. This happens when
+ * the phy is not broadcasting the same SAS address as the other phys in the
+ * assigned port.
+ * @phy: This is the phy object which has gone link down.
+ *
+ * This function handles the manual port configuration link down notifications.
+ * Since all ports and phys are associated at initialization time we just turn
+ * around and notifiy the port object of the link down event. If this PHY is
+ * not associated with a port there is no action taken. Is it possible to get a
+ * link down notification from a phy that has no assocoated port?
+ */
+static void scic_sds_mpc_agent_link_down(
+ struct scic_sds_controller *scic,
+ struct scic_sds_port_configuration_agent *port_agent,
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ if (sci_port != NULL) {
+ /*
+ * If we can form a new port from the remainder of the phys
+ * then we want to start the timer to allow the SCI User to
+ * cleanup old devices and rediscover the port before
+ * rebuilding the port with the phys that remain in the ready
+ * state.
+ */
+ port_agent->phy_ready_mask &=
+ ~(1 << scic_sds_phy_get_index(sci_phy));
+ port_agent->phy_configured_mask &=
+ ~(1 << scic_sds_phy_get_index(sci_phy));
+
+ /*
+ * Check to see if there are more phys waiting to be
+ * configured into a port. If there are allow the SCI User
+ * to tear down this port, if necessary, and then reconstruct
+ * the port after the timeout.
+ */
+ if ((port_agent->phy_configured_mask == 0x0000) &&
+ (port_agent->phy_ready_mask != 0x0000) &&
+ !port_agent->timer_pending) {
+ port_agent->timer_pending = true;
+
+ isci_timer_start(port_agent->timer,
+ SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT);
+ }
+
+ scic_sds_port_link_down(sci_port, sci_phy);
+ }
+}
+
+/*
+ * ******************************************************************************
+ * Automatic port configuration agent routines
+ * ****************************************************************************** */
+
+/**
+ *
+ *
+ * This routine will verify that the phys are assigned a valid SAS address for
+ * automatic port configuration mode.
+ */
+static enum sci_status scic_sds_apc_agent_validate_phy_configuration(
+ struct scic_sds_controller *controller,
+ struct scic_sds_port_configuration_agent *port_agent)
+{
+ u8 phy_index;
+ u8 port_index;
+ struct sci_sas_address sas_address;
+ struct sci_sas_address phy_assigned_address;
+ struct isci_host *ihost = scic_to_ihost(controller);
+
+ phy_index = 0;
+
+ while (phy_index < SCI_MAX_PHYS) {
+ port_index = phy_index;
+
+ /* Get the assigned SAS Address for the first PHY on the controller. */
+ scic_sds_phy_get_sas_address(&ihost->phys[phy_index].sci,
+ &sas_address);
+
+ while (++phy_index < SCI_MAX_PHYS) {
+ scic_sds_phy_get_sas_address(&ihost->phys[phy_index].sci,
+ &phy_assigned_address);
+
+ /* Verify each of the SAS address are all the same for every PHY */
+ if (sci_sas_address_compare(sas_address, phy_assigned_address) == 0) {
+ port_agent->phy_valid_port_range[phy_index].min_index = port_index;
+ port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+ } else {
+ port_agent->phy_valid_port_range[phy_index].min_index = phy_index;
+ port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+ break;
+ }
+ }
+ }
+
+ return scic_sds_port_configuration_agent_validate_ports(controller, port_agent);
+}
+
+/**
+ *
+ * @controller: This is the controller that to which the port agent is assigned.
+ * @port_agent: This is the port agent that is requesting the timer start
+ * operation.
+ * @phy: This is the phy that has caused the timer operation to be scheduled.
+ *
+ * This routine will restart the automatic port configuration timeout timer for
+ * the next time period. This could be caused by either a link down event or a
+ * link up event where we can not yet tell to which port a phy belongs.
+ */
+static inline void scic_sds_apc_agent_start_timer(
+ struct scic_sds_controller *scic,
+ struct scic_sds_port_configuration_agent *port_agent,
+ struct scic_sds_phy *sci_phy,
+ u32 timeout)
+{
+ if (port_agent->timer_pending)
+ isci_timer_stop(port_agent->timer);
+
+ port_agent->timer_pending = true;
+
+ isci_timer_start(port_agent->timer, timeout);
+}
+
+/**
+ *
+ * @controller: This is the controller object that receives the link up
+ * notification.
+ * @phy: This is the phy object which has gone link up.
+ *
+ * This method handles the automatic port configuration for link up
+ * notifications.
+ */
+static void scic_sds_apc_agent_configure_ports(
+ struct scic_sds_controller *controller,
+ struct scic_sds_port_configuration_agent *port_agent,
+ struct scic_sds_phy *phy,
+ bool start_timer)
+{
+ u8 port_index;
+ enum sci_status status;
+ struct scic_sds_port *port;
+ enum SCIC_SDS_APC_ACTIVITY apc_activity = SCIC_SDS_APC_SKIP_PHY;
+ struct isci_host *ihost = scic_to_ihost(controller);
+
+ port = scic_sds_port_configuration_agent_find_port(controller, phy);
+
+ if (port != NULL) {
+ if (scic_sds_port_is_valid_phy_assignment(port, phy->phy_index))
+ apc_activity = SCIC_SDS_APC_ADD_PHY;
+ else
+ apc_activity = SCIC_SDS_APC_SKIP_PHY;
+ } else {
+ /*
+ * There is no matching Port for this PHY so lets search through the
+ * Ports and see if we can add the PHY to its own port or maybe start
+ * the timer and wait to see if a wider port can be made.
+ *
+ * Note the break when we reach the condition of the port id == phy id */
+ for (
+ port_index = port_agent->phy_valid_port_range[phy->phy_index].min_index;
+ port_index <= port_agent->phy_valid_port_range[phy->phy_index].max_index;
+ port_index++
+ ) {
+
+ port = &ihost->ports[port_index].sci;
+
+ /* First we must make sure that this PHY can be added to this Port. */
+ if (scic_sds_port_is_valid_phy_assignment(port, phy->phy_index)) {
+ /*
+ * Port contains a PHY with a greater PHY ID than the current
+ * PHY that has gone link up. This phy can not be part of any
+ * port so skip it and move on. */
+ if (port->active_phy_mask > (1 << phy->phy_index)) {
+ apc_activity = SCIC_SDS_APC_SKIP_PHY;
+ break;
+ }
+
+ /*
+ * We have reached the end of our Port list and have not found
+ * any reason why we should not either add the PHY to the port
+ * or wait for more phys to become active. */
+ if (port->physical_port_index == phy->phy_index) {
+ /*
+ * The Port either has no active PHYs.
+ * Consider that if the port had any active PHYs we would have
+ * or active PHYs with
+ * a lower PHY Id than this PHY. */
+ if (apc_activity != SCIC_SDS_APC_START_TIMER) {
+ apc_activity = SCIC_SDS_APC_ADD_PHY;
+ }
+
+ break;
+ }
+
+ /*
+ * The current Port has no active PHYs and this PHY could be part
+ * of this Port. Since we dont know as yet setup to start the
+ * timer and see if there is a better configuration. */
+ if (port->active_phy_mask == 0) {
+ apc_activity = SCIC_SDS_APC_START_TIMER;
+ }
+ } else if (port->active_phy_mask != 0) {
+ /*
+ * The Port has an active phy and the current Phy can not
+ * participate in this port so skip the PHY and see if
+ * there is a better configuration. */
+ apc_activity = SCIC_SDS_APC_SKIP_PHY;
+ }
+ }
+ }
+
+ /*
+ * Check to see if the start timer operations should instead map to an
+ * add phy operation. This is caused because we have been waiting to
+ * add a phy to a port but could not becuase the automatic port
+ * configuration engine had a choice of possible ports for the phy.
+ * Since we have gone through a timeout we are going to restrict the
+ * choice to the smallest possible port. */
+ if (
+ (start_timer == false)
+ && (apc_activity == SCIC_SDS_APC_START_TIMER)
+ ) {
+ apc_activity = SCIC_SDS_APC_ADD_PHY;
+ }
+
+ switch (apc_activity) {
+ case SCIC_SDS_APC_ADD_PHY:
+ status = scic_sds_port_add_phy(port, phy);
+
+ if (status == SCI_SUCCESS) {
+ port_agent->phy_configured_mask |= (1 << phy->phy_index);
+ }
+ break;
+
+ case SCIC_SDS_APC_START_TIMER:
+ scic_sds_apc_agent_start_timer(
+ controller, port_agent, phy, SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION
+ );
+ break;
+
+ case SCIC_SDS_APC_SKIP_PHY:
+ default:
+ /* do nothing the PHY can not be made part of a port at this time. */
+ break;
+ }
+}
+
+/**
+ * scic_sds_apc_agent_link_up - handle apc link up events
+ * @scic: This is the controller object that receives the link up
+ * notification.
+ * @sci_port: This is the port object associated with the phy. If the is no
+ * associated port this is an NULL.
+ * @sci_phy: This is the phy object which has gone link up.
+ *
+ * This method handles the automatic port configuration for link up
+ * notifications. Is it possible to get a link down notification from a phy
+ * that has no assocoated port?
+ */
+static void scic_sds_apc_agent_link_up(struct scic_sds_controller *scic,
+ struct scic_sds_port_configuration_agent *port_agent,
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ u8 phy_index = sci_phy->phy_index;
+
+ if (!sci_port) {
+ /* the phy is not the part of this port */
+ port_agent->phy_ready_mask |= 1 << phy_index;
+ scic_sds_apc_agent_configure_ports(scic, port_agent, sci_phy, true);
+ } else {
+ /* the phy is already the part of the port */
+ u32 port_state = sci_port->state_machine.current_state_id;
+
+ /* if the PORT'S state is resetting then the link up is from
+ * port hard reset in this case, we need to tell the port
+ * that link up is recieved
+ */
+ BUG_ON(port_state != SCI_BASE_PORT_STATE_RESETTING);
+ port_agent->phy_ready_mask |= 1 << phy_index;
+ scic_sds_port_link_up(sci_port, sci_phy);
+ }
+}
+
+/**
+ *
+ * @controller: This is the controller object that receives the link down
+ * notification.
+ * @port: This is the port object associated with the phy. If the is no
+ * associated port this is an NULL.
+ * @phy: This is the phy object which has gone link down.
+ *
+ * This method handles the automatic port configuration link down
+ * notifications. not associated with a port there is no action taken. Is it
+ * possible to get a link down notification from a phy that has no assocoated
+ * port?
+ */
+static void scic_sds_apc_agent_link_down(
+ struct scic_sds_controller *controller,
+ struct scic_sds_port_configuration_agent *port_agent,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ port_agent->phy_ready_mask &= ~(1 << scic_sds_phy_get_index(phy));
+
+ if (port != NULL) {
+ if (port_agent->phy_configured_mask & (1 << phy->phy_index)) {
+ enum sci_status status;
+
+ status = scic_sds_port_remove_phy(port, phy);
+
+ if (status == SCI_SUCCESS) {
+ port_agent->phy_configured_mask &= ~(1 << phy->phy_index);
+ }
+ }
+ }
+}
+
+/* configure the phys into ports when the timer fires */
+static void scic_sds_apc_agent_timeout_handler(void *object)
+{
+ u32 index;
+ struct scic_sds_port_configuration_agent *port_agent;
+ struct scic_sds_controller *scic = object;
+ struct isci_host *ihost = scic_to_ihost(scic);
+ u16 configure_phy_mask;
+
+ port_agent = scic_sds_controller_get_port_configuration_agent(scic);
+
+ port_agent->timer_pending = false;
+
+ configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
+
+ if (!configure_phy_mask)
+ return;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if ((configure_phy_mask & (1 << index)) == 0)
+ continue;
+
+ scic_sds_apc_agent_configure_ports(scic, port_agent,
+ &ihost->phys[index].sci, false);
+ }
+}
+
+/*
+ * ******************************************************************************
+ * Public port configuration agent routines
+ * ****************************************************************************** */
+
+/**
+ *
+ *
+ * This method will construct the port configuration agent for operation. This
+ * call is universal for both manual port configuration and automatic port
+ * configuration modes.
+ */
+void scic_sds_port_configuration_agent_construct(
+ struct scic_sds_port_configuration_agent *port_agent)
+{
+ u32 index;
+
+ port_agent->phy_configured_mask = 0x00;
+ port_agent->phy_ready_mask = 0x00;
+
+ port_agent->link_up_handler = NULL;
+ port_agent->link_down_handler = NULL;
+
+ port_agent->timer_pending = false;
+ port_agent->timer = NULL;
+
+ for (index = 0; index < SCI_MAX_PORTS; index++) {
+ port_agent->phy_valid_port_range[index].min_index = 0;
+ port_agent->phy_valid_port_range[index].max_index = 0;
+ }
+}
+
+enum sci_status scic_sds_port_configuration_agent_initialize(
+ struct scic_sds_controller *scic,
+ struct scic_sds_port_configuration_agent *port_agent)
+{
+ enum sci_status status = SCI_SUCCESS;
+ enum scic_port_configuration_mode mode;
+ struct isci_host *ihost = scic_to_ihost(scic);
+
+ mode = scic->oem_parameters.sds1.controller.mode_type;
+
+ if (mode == SCIC_PORT_MANUAL_CONFIGURATION_MODE) {
+ status = scic_sds_mpc_agent_validate_phy_configuration(
+ scic, port_agent);
+
+ port_agent->link_up_handler = scic_sds_mpc_agent_link_up;
+ port_agent->link_down_handler = scic_sds_mpc_agent_link_down;
+
+ port_agent->timer = isci_timer_create(
+ ihost,
+ scic,
+ scic_sds_mpc_agent_timeout_handler);
+ } else {
+ status = scic_sds_apc_agent_validate_phy_configuration(
+ scic, port_agent);
+
+ port_agent->link_up_handler = scic_sds_apc_agent_link_up;
+ port_agent->link_down_handler = scic_sds_apc_agent_link_down;
+
+ port_agent->timer = isci_timer_create(
+ ihost,
+ scic,
+ scic_sds_apc_agent_timeout_handler);
+ }
+
+ /* Make sure we have actually gotten a timer */
+ if ((status == SCI_SUCCESS) && (port_agent->timer == NULL)) {
+ dev_err(scic_to_dev(scic),
+ "%s: Controller 0x%p automatic port configuration "
+ "agent could not get timer.\n",
+ __func__,
+ scic);
+
+ status = SCI_FAILURE;
+ }
+
+ return status;
+}
#include <linux/pci.h>
#include "isci.h"
-struct isci_orom *isci_request_oprom(struct pci_dev *pdev);
+#define SCIC_SDS_PARM_NO_SPEED 0
+
+/* generation 1 (i.e. 1.5 Gb/s) */
+#define SCIC_SDS_PARM_GEN1_SPEED 1
+
+/* generation 2 (i.e. 3.0 Gb/s) */
+#define SCIC_SDS_PARM_GEN2_SPEED 2
+
+/* generation 3 (i.e. 6.0 Gb/s) */
+#define SCIC_SDS_PARM_GEN3_SPEED 3
+#define SCIC_SDS_PARM_MAX_SPEED SCIC_SDS_PARM_GEN3_SPEED
+
+/* parameters that can be set by module parameters */
+struct scic_sds_user_parameters {
+ struct sci_phy_user_params {
+ /**
+ * This field specifies the NOTIFY (ENABLE SPIN UP) primitive
+ * insertion frequency for this phy index.
+ */
+ u32 notify_enable_spin_up_insertion_frequency;
+
+ /**
+ * This method specifies the number of transmitted DWORDs within which
+ * to transmit a single ALIGN primitive. This value applies regardless
+ * of what type of device is attached or connection state. A value of
+ * 0 indicates that no ALIGN primitives will be inserted.
+ */
+ u16 align_insertion_frequency;
+
+ /**
+ * This method specifies the number of transmitted DWORDs within which
+ * to transmit 2 ALIGN primitives. This applies for SAS connections
+ * only. A minimum value of 3 is required for this field.
+ */
+ u16 in_connection_align_insertion_frequency;
+
+ /**
+ * This field indicates the maximum speed generation to be utilized
+ * by phys in the supplied port.
+ * - A value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
+ * - A value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
+ * - A value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
+ */
+ u8 max_speed_generation;
+
+ } phys[SCI_MAX_PHYS];
+
+ /**
+ * This field specifies the maximum number of direct attached devices
+ * that can have power supplied to them simultaneously.
+ */
+ u8 max_number_concurrent_device_spin_up;
+
+ /**
+ * This field specifies the number of seconds to allow a phy to consume
+ * power before yielding to another phy.
+ *
+ */
+ u8 phy_spin_up_delay_interval;
+
+ /**
+ * These timer values specifies how long a link will remain open with no
+ * activity in increments of a microsecond, it can be in increments of
+ * 100 microseconds if the upper most bit is set.
+ *
+ */
+ u16 stp_inactivity_timeout;
+ u16 ssp_inactivity_timeout;
+
+ /**
+ * These timer values specifies how long a link will remain open in increments
+ * of 100 microseconds.
+ *
+ */
+ u16 stp_max_occupancy_timeout;
+ u16 ssp_max_occupancy_timeout;
+
+ /**
+ * This timer value specifies how long a link will remain open with no
+ * outbound traffic in increments of a microsecond.
+ *
+ */
+ u8 no_outbound_task_timeout;
+
+};
+
+/* XXX kill this union */
+union scic_user_parameters {
+ /**
+ * This field specifies the user parameters specific to the
+ * Storage Controller Unit (SCU) Driver Standard (SDS) version
+ * 1.
+ */
+ struct scic_sds_user_parameters sds1;
+};
+
+#define SCIC_SDS_PARM_PHY_MASK_MIN 0x0
+#define SCIC_SDS_PARM_PHY_MASK_MAX 0xF
+#define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4
+
+struct scic_sds_oem_params;
+int scic_oem_parameters_validate(struct scic_sds_oem_params *oem);
union scic_oem_parameters;
-struct isci_orom;
+void scic_oem_parameters_get(struct scic_sds_controller *scic,
+ union scic_oem_parameters *oem);
-enum sci_status isci_parse_oem_parameters(
- union scic_oem_parameters *oem_params,
- struct isci_orom *orom,
- int scu_index);
+struct isci_orom;
+struct isci_orom *isci_request_oprom(struct pci_dev *pdev);
+enum sci_status isci_parse_oem_parameters(union scic_oem_parameters *oem,
+ struct isci_orom *orom, int scu_index);
struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw);
struct isci_orom *isci_get_efi_var(struct pci_dev *pdev);
} phys[SCI_MAX_PHYS];
} __attribute__ ((packed));
+/* XXX kill this union */
+union scic_oem_parameters {
+ /**
+ * This field specifies the OEM parameters specific to the
+ * Storage Controller Unit (SCU) Driver Standard (SDS) version
+ * 1.
+ */
+ struct scic_sds_oem_params sds1;
+};
+
struct isci_orom {
struct sci_bios_oem_param_block_hdr hdr;
struct scic_sds_oem_params ctrl[SCI_MAX_CONTROLLERS];
#include "port.h"
#include "remote_device.h"
#include "request.h"
-#include "scic_port.h"
-#include "scic_sds_port.h"
#include "remote_node_context.h"
#include "scu_event_codes.h"
#include "task.h"
#include "host.h"
#include "state_machine.h"
-#include "scic_sds_port.h"
#include "remote_device.h"
#include "remote_node_context.h"
#include "scu_event_codes.h"
*/
#include "isci.h"
-#include "scic_port.h"
#include "task.h"
#include "request.h"
#include "sata.h"
projects / openwrt / staging / blogic.git / commitdiff