| Current Path : /usr/src/sys/dev/isci/scil/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/sys/dev/isci/scil/scic_sds_port.c |
/*-
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/isci/scil/scic_sds_port.c 231689 2012-02-14 15:58:49Z jimharris $");
/**
* @file
*
* @brief This file contains the implementation for the public and protected
* methods for the SCIC_SDS_PORT object.
*/
#include <dev/isci/scil/scic_phy.h>
#include <dev/isci/scil/scic_port.h>
#include <dev/isci/scil/scic_controller.h>
#include <dev/isci/scil/scic_user_callback.h>
#include <dev/isci/scil/scic_sds_controller.h>
#include <dev/isci/scil/scic_sds_port.h>
#include <dev/isci/scil/scic_sds_phy.h>
#include <dev/isci/scil/scic_sds_remote_device.h>
#include <dev/isci/scil/scic_sds_request.h>
#include <dev/isci/scil/scic_sds_port_registers.h>
#include <dev/isci/scil/scic_sds_logger.h>
#include <dev/isci/scil/scic_sds_phy_registers.h>
#include <dev/isci/scil/intel_sas.h>
#include <dev/isci/scil/scic_sds_remote_node_context.h>
#include <dev/isci/scil/sci_util.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)
/**
* 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.
*
* @param[in] this_port This is the port object to which the phy is being
* assigned.
* @param[in] phy_index This is the phy index that is being assigned to the
* port.
*
* @return BOOL
* @retval TRUE if this is a valid phy assignment for the port
* @retval FALSE if this is not a valid phy assignment for the port
*/
BOOL scic_sds_port_is_valid_phy_assignment(
SCIC_SDS_PORT_T *this_port,
U32 phy_index
)
{
// Initialize to invalid value.
U32 existing_phy_index = SCI_MAX_PHYS;
U32 index;
if ((this_port->physical_port_index == 1) && (phy_index != 1))
{
return FALSE;
}
if (this_port->physical_port_index == 3 && phy_index != 3)
{
return FALSE;
}
if (
(this_port->physical_port_index == 2)
&& ((phy_index == 0) || (phy_index == 1))
)
{
return FALSE;
}
for (index = 0; index < SCI_MAX_PHYS; index++)
{
if ( (this_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)
&& (this_port->owning_controller->user_parameters.sds1.phys[
phy_index].max_speed_generation !=
this_port->owning_controller->user_parameters.sds1.phys[
existing_phy_index].max_speed_generation)
)
return FALSE;
return TRUE;
}
/**
* @brief This method requests a list (mask) of the phys contained in the
* supplied SAS port.
*
* @param[in] this_port a handle corresponding to the SAS port for which
* to return the phy mask.
*
* @return 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).
*/
U32 scic_sds_port_get_phys(
SCIC_SDS_PORT_T * this_port
)
{
U32 index;
U32 mask;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_sds_port_get_phys(0x%x) enter\n",
this_port
));
mask = 0;
for (index = 0; index < SCI_MAX_PHYS; index++)
{
if (this_port->phy_table[index] != NULL)
{
mask |= (1 << index);
}
}
return mask;
}
/**
* 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]
*
* @param[in] this_port This is the port object for which to determine
* if the phy mask can be supported.
*
* @return This method returns a boolean indication specifying if the
* phy mask can be supported.
* @retval TRUE if this is a valid phy assignment for the port
* @retval FALSE if this is not a valid phy assignment for the port
*/
BOOL scic_sds_port_is_phy_mask_valid(
SCIC_SDS_PORT_T *this_port,
U32 phy_mask
)
{
if (this_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 (this_port->physical_port_index == 1)
{
if ( ((phy_mask & 0x02) == 0x02)
|| (phy_mask == 0) )
return TRUE;
}
else if (this_port->physical_port_index == 2)
{
if ( ((phy_mask & 0x0C) == 0x0C)
|| ((phy_mask & 0x04) == 0x04)
|| (phy_mask == 0) )
return TRUE;
}
else if (this_port->physical_port_index == 3)
{
if ( ((phy_mask & 0x08) == 0x08)
|| (phy_mask == 0) )
return TRUE;
}
return FALSE;
}
/**
* This method retrieves a currently active (i.e. connected) phy
* contained in the port. Currently, the lowest order phy that is
* connected is returned.
*
* @param[in] this_port This parameter specifies the port from which
* to return a connected phy.
*
* @return This method returns a pointer to a SCIS_SDS_PHY object.
* @retval NULL This value is returned if there are no currently
* active (i.e. connected to a remote end point) phys
* contained in the port.
* @retval All other values specify a SCIC_SDS_PHY object that is
* active in the port.
*/
SCIC_SDS_PHY_T * scic_sds_port_get_a_connected_phy(
SCIC_SDS_PORT_T *this_port
)
{
U32 index;
SCIC_SDS_PHY_T *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 = this_port->phy_table[index];
if (
(phy != NULL)
&& scic_sds_port_active_phy(this_port, phy)
)
{
return phy;
}
}
return NULL;
}
/**
* This method attempts to make the assignment of the phy to the port.
* If successful the phy is assigned to the ports phy table.
*
* @param[in, out] port The port object to which the phy assignement
* is being made.
* @param[in, out] phy The phy which is being assigned to the port.
*
* @return BOOL
* @retval TRUE if the phy assignment can be made.
* @retval FALSE if the phy assignement can not be made.
*
* @note This is a functional test that only fails if the phy is currently
* assigned to a different port.
*/
SCI_STATUS scic_sds_port_set_phy(
SCIC_SDS_PORT_T *port,
SCIC_SDS_PHY_T *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] == SCI_INVALID_HANDLE)
&& (scic_sds_phy_get_port(phy) == SCI_INVALID_HANDLE)
&& 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;
}
/**
* This method will clear the phy assigned to this port. This method fails
* if this phy is not currently assinged to this port.
*
* @param[in, out] port The port from which the phy is being cleared.
* @param[in, out] phy The phy being cleared from the port.
*
* @return BOOL
* @retval TRUE if the phy is removed from the port.
* @retval FALSE if this phy is not assined to this port.
*/
SCI_STATUS scic_sds_port_clear_phy(
SCIC_SDS_PORT_T *port,
SCIC_SDS_PHY_T *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)
)
{
// Yep it is assigned to this port so remove it
scic_sds_phy_set_port(
phy,
&scic_sds_port_get_controller(port)->port_table[SCI_MAX_PORTS]
);
port->phy_table[phy->phy_index] = SCI_INVALID_HANDLE;
return SCI_SUCCESS;
}
return SCI_FAILURE;
}
/**
* This method will add a PHY to the selected port.
*
* @param[in] this_port This parameter specifies the port in which the phy will
* be added.
*
* @param[in] the_phy This parameter is the phy which is to be added to the
* port.
*
* @return This method returns an SCI_STATUS.
* @retval SCI_SUCCESS the phy has been added to the port.
* @retval Any other status is failre to add the phy to the port.
*/
SCI_STATUS scic_sds_port_add_phy(
SCIC_SDS_PORT_T * this_port,
SCIC_SDS_PHY_T * the_phy
)
{
return this_port->state_handlers->parent.add_phy_handler(
&this_port->parent, &the_phy->parent);
}
/**
* This method will remove the PHY from the selected PORT.
*
* @param[in] this_port This parameter specifies the port in which the phy will
* be added.
*
* @param[in] the_phy This parameter is the phy which is to be added to the
* port.
*
* @return This method returns an SCI_STATUS.
* @retval SCI_SUCCESS the phy has been removed from the port.
* @retval Any other status is failre to add the phy to the port.
*/
SCI_STATUS scic_sds_port_remove_phy(
SCIC_SDS_PORT_T * this_port,
SCIC_SDS_PHY_T * the_phy
)
{
return this_port->state_handlers->parent.remove_phy_handler(
&this_port->parent, &the_phy->parent);
}
/**
* @brief This method requests the SAS address for the supplied SAS port
* from the SCI implementation.
*
* @param[in] this_port a handle corresponding to the SAS port for which
* to return the SAS address.
* @param[out] sas_address This parameter specifies a pointer to a SAS
* address structure into which the core will copy the SAS
* address for the port.
*
* @return none
*/
void scic_sds_port_get_sas_address(
SCIC_SDS_PORT_T * this_port,
SCI_SAS_ADDRESS_T * sas_address
)
{
U32 index;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_sds_port_get_sas_address(0x%x, 0x%x) enter\n",
this_port, sas_address
));
sas_address->high = 0;
sas_address->low = 0;
for (index = 0; index < SCI_MAX_PHYS; index++)
{
if (this_port->phy_table[index] != NULL)
{
scic_sds_phy_get_sas_address(this_port->phy_table[index], sas_address);
}
}
}
/**
* @brief This method will indicate which protocols are supported by this
* port.
*
* @param[in] this_port a handle corresponding to the SAS port for which
* to return the supported protocols.
* @param[out] protocols This parameter specifies a pointer to an IAF
* protocol field structure into which the core will copy
* the protocol values for the port. The values are
* returned as part of a bit mask in order to allow for
* multi-protocol support.
*
* @return none
*/
static
void scic_sds_port_get_protocols(
SCIC_SDS_PORT_T * this_port,
SCI_SAS_IDENTIFY_ADDRESS_FRAME_PROTOCOLS_T * protocols
)
{
U8 index;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_sds_port_get_protocols(0x%x, 0x%x) enter\n",
this_port, protocols
));
protocols->u.all = 0;
for (index = 0; index < SCI_MAX_PHYS; index++)
{
if (this_port->phy_table[index] != NULL)
{
scic_sds_phy_get_protocols(this_port->phy_table[index], protocols);
}
}
}
/**
* @brief This method requests the SAS address for the device directly
* attached to this SAS port.
*
* @param[in] this_port a handle corresponding to the SAS port for which
* to return the SAS address.
* @param[out] 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.
*
* @return none
*/
void scic_sds_port_get_attached_sas_address(
SCIC_SDS_PORT_T * this_port,
SCI_SAS_ADDRESS_T * sas_address
)
{
SCI_SAS_IDENTIFY_ADDRESS_FRAME_PROTOCOLS_T protocols;
SCIC_SDS_PHY_T *phy;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_sds_port_get_attached_sas_address(0x%x, 0x%x) enter\n",
this_port, sas_address
));
// Ensure that the phy is both part of the port and currently
// connected to the remote end-point.
phy = scic_sds_port_get_a_connected_phy(this_port);
if (phy != NULL)
{
scic_sds_phy_get_attached_phy_protocols(phy, &protocols);
if (!protocols.u.bits.stp_target)
{
scic_sds_phy_get_attached_sas_address(phy, sas_address);
}
else
{
scic_sds_phy_get_sas_address(phy, sas_address);
sas_address->low += phy->phy_index;
//Need to make up attached STP device's SAS address in
//the same order as recorded IAF from SSP device.
sas_address->high = SCIC_SWAP_DWORD(sas_address->high);
sas_address->low = SCIC_SWAP_DWORD(sas_address->low);
}
}
else
{
sas_address->high = 0;
sas_address->low = 0;
}
}
/**
* @brief This method will indicate which protocols are supported by this
* remote device.
*
* @param[in] this_port a handle corresponding to the SAS port for which
* to return the supported protocols.
* @param[out] protocols This parameter specifies a pointer to an IAF
* protocol field structure into which the core will copy
* the protocol values for the port. The values are
* returned as part of a bit mask in order to allow for
* multi-protocol support.
*
* @return none
*/
void scic_sds_port_get_attached_protocols(
SCIC_SDS_PORT_T * this_port,
SCI_SAS_IDENTIFY_ADDRESS_FRAME_PROTOCOLS_T * protocols
)
{
SCIC_SDS_PHY_T *phy;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_sds_port_get_attached_protocols(0x%x, 0x%x) enter\n",
this_port, protocols
));
// Ensure that the phy is both part of the port and currently
// connected to the remote end-point.
phy = scic_sds_port_get_a_connected_phy(this_port);
if (phy != NULL)
scic_sds_phy_get_attached_phy_protocols(phy, protocols);
else
protocols->u.all = 0;
}
/**
* @brief This method returns the amount of memory requred for a port
* object.
*
* @return U32
*/
U32 scic_sds_port_get_object_size(void)
{
return sizeof(SCIC_SDS_PORT_T);
}
/**
* @brief This method returns the minimum number of timers required for all
* port objects.
*
* @return U32
*/
U32 scic_sds_port_get_min_timer_count(void)
{
return SCIC_SDS_PORT_MIN_TIMER_COUNT;
}
/**
* @brief This method returns the maximum number of timers required for all
* port objects.
*
* @return U32
*/
U32 scic_sds_port_get_max_timer_count(void)
{
return SCIC_SDS_PORT_MAX_TIMER_COUNT;
}
#ifdef SCI_LOGGING
void scic_sds_port_initialize_state_logging(
SCIC_SDS_PORT_T *this_port
)
{
sci_base_state_machine_logger_initialize(
&this_port->parent.state_machine_logger,
&this_port->parent.state_machine,
&this_port->parent.parent,
scic_cb_logger_log_states,
"SCIC_SDS_PORT_T", "base state machine",
SCIC_LOG_OBJECT_PORT
);
sci_base_state_machine_logger_initialize(
&this_port->ready_substate_machine_logger,
&this_port->ready_substate_machine,
&this_port->parent.parent,
scic_cb_logger_log_states,
"SCIC_SDS_PORT_T", "ready substate machine",
SCIC_LOG_OBJECT_PORT
);
}
#endif
/**
* 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.
*
* @param[in] this_port The logical port on which we need to create the
* remote node context.
* @param[in] rni The remote node index for this remote node context.
*
* @return none
*/
static
void scic_sds_port_construct_dummy_rnc(
SCIC_SDS_PORT_T *this_port,
U16 rni
)
{
SCU_REMOTE_NODE_CONTEXT_T * rnc;
rnc = &(this_port->owning_controller->remote_node_context_table[rni]);
memset(rnc, 0, sizeof(SCU_REMOTE_NODE_CONTEXT_T));
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 = this_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;
}
/**
* 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.
*
* @param[in] this_port The logical port on which we need to create the
* remote node context.
* context.
* @param[in] tci The remote node index for this remote node context.
*
*/
static
void scic_sds_port_construct_dummy_task(
SCIC_SDS_PORT_T *this_port,
U16 tci
)
{
SCU_TASK_CONTEXT_T * task_context;
task_context = scic_sds_controller_get_task_context_buffer(this_port->owning_controller, tci);
memset(task_context, 0, sizeof(SCU_TASK_CONTEXT_T));
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 = this_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 = this_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;
}
/**
* This routine will free any allocated dummy resources for this port.
*
* @param[in, out] this_port The port on which the resources are being destroyed.
*/
static
void scic_sds_port_destroy_dummy_resources(
SCIC_SDS_PORT_T * this_port
)
{
if (this_port->reserved_tci != SCU_DUMMY_INDEX)
{
scic_controller_free_io_tag(
this_port->owning_controller, this_port->reserved_tci
);
}
if (this_port->reserved_rni != SCU_DUMMY_INDEX)
{
scic_sds_remote_node_table_release_remote_node_index(
&this_port->owning_controller->available_remote_nodes, 1, this_port->reserved_rni
);
}
this_port->reserved_rni = SCU_DUMMY_INDEX;
this_port->reserved_tci = SCU_DUMMY_INDEX;
}
/**
* @brief
*
* @param[in] this_port
* @param[in] port_index
* @param[in] owning_controller
*/
void scic_sds_port_construct(
SCIC_SDS_PORT_T *this_port,
U8 port_index,
SCIC_SDS_CONTROLLER_T *owning_controller
)
{
U32 index;
sci_base_port_construct(
&this_port->parent,
sci_base_object_get_logger(owning_controller),
scic_sds_port_state_table
);
sci_base_state_machine_construct(
scic_sds_port_get_ready_substate_machine(this_port),
&this_port->parent.parent,
scic_sds_port_ready_substate_table,
SCIC_SDS_PORT_READY_SUBSTATE_WAITING
);
scic_sds_port_initialize_state_logging(this_port);
this_port->logical_port_index = SCIC_SDS_DUMMY_PORT;
this_port->physical_port_index = port_index;
this_port->active_phy_mask = 0;
this_port->enabled_phy_mask = 0;
this_port->owning_controller = owning_controller;
this_port->started_request_count = 0;
this_port->assigned_device_count = 0;
this_port->reserved_rni = SCU_DUMMY_INDEX;
this_port->reserved_tci = SCU_DUMMY_INDEX;
this_port->timer_handle = SCI_INVALID_HANDLE;
this_port->port_task_scheduler_registers = NULL;
for (index = 0; index < SCI_MAX_PHYS; index++)
{
this_port->phy_table[index] = NULL;
}
}
/**
* @brief This method performs initialization of the supplied port.
* Initialization includes:
* - state machine initialization
* - member variable initialization
* - configuring the phy_mask
*
* @param[in] this_port
* @param[in] transport_layer_registers
* @param[in] port_task_scheduler_registers
* @param[in] port_configuration_regsiter
*
* @return SCI_STATUS
* @retval SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION This value is
* returned if the phy being added to the port
*/
SCI_STATUS scic_sds_port_initialize(
SCIC_SDS_PORT_T *this_port,
void *port_task_scheduler_registers,
void *port_configuration_regsiter,
void *viit_registers
)
{
this_port->port_task_scheduler_registers = port_task_scheduler_registers;
this_port->port_pe_configuration_register = port_configuration_regsiter;
this_port->viit_registers = viit_registers;
return SCI_SUCCESS;
}
/**
* This method is the a general link up handler for the SCIC_SDS_PORT object.
* This function will determine if this SCIC_SDS_PHY can
* be assigned to this SCIC_SDS_PORT object. If the SCIC_SDS_PHY object can
* is not a valid PHY for this port then the function will notify the SCIC_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.
*
* @param[in] this_port This is the SCIC_SDS_PORT object for which has a phy
* that has gone link up.
* @param[in] the_phy This is the SCIC_SDS_PHY object that has gone link up.
* @param[in] 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.
* @param[in] do_resume_phy This parameter specifies whether to resume the phy.
* If this function is called from MPC mode, it will be always true.
* for APC, this will be false, so that phys could be resumed later
*
* @return none
*/
void scic_sds_port_general_link_up_handler(
SCIC_SDS_PORT_T * this_port,
SCIC_SDS_PHY_T * the_phy,
BOOL do_notify_user,
BOOL do_resume_phy
)
{
SCI_SAS_ADDRESS_T port_sas_address;
SCI_SAS_ADDRESS_T phy_sas_address;
scic_sds_port_get_attached_sas_address(this_port, &port_sas_address);
scic_sds_phy_get_attached_sas_address(the_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 )
)
|| (this_port->active_phy_mask == 0)
)
{
scic_sds_port_activate_phy(this_port, the_phy, do_notify_user, do_resume_phy);
if (this_port->parent.state_machine.current_state_id
== SCI_BASE_PORT_STATE_RESETTING)
{
sci_base_state_machine_change_state(
&this_port->parent.state_machine, SCI_BASE_PORT_STATE_READY
);
}
}
else
{
scic_sds_port_invalid_link_up(this_port, the_phy);
}
}
// ---------------------------------------------------------------------------
SCI_STATUS scic_port_add_phy(
SCI_PORT_HANDLE_T handle,
SCI_PHY_HANDLE_T phy
)
{
#if defined (SCI_LOGGING)
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)handle;
#endif // defined (SCI_LOGGING)
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_port_add_phy(0x%x, 0x%x) enter\n",
handle, phy
));
SCIC_LOG_ERROR((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"Interface function scic_port_add_phy() has been deprecated. "
"PORT configuration is handled through the OEM parameters.\n"
));
return SCI_FAILURE_ADDING_PHY_UNSUPPORTED;
}
// ---------------------------------------------------------------------------
SCI_STATUS scic_port_remove_phy(
SCI_PORT_HANDLE_T handle,
SCI_PHY_HANDLE_T phy
)
{
#if defined (SCI_LOGGING)
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)handle;
#endif // defined (SCI_LOGGING)
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_port_remove_phy(0x%x, 0x%x) enter\n",
handle, phy
));
SCIC_LOG_ERROR((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"Interface function scic_port_remove_phy() has been deprecated. "
"PORT configuration is handled through the OEM parameters.\n"
));
return SCI_FAILURE_ADDING_PHY_UNSUPPORTED;
}
// ---------------------------------------------------------------------------
SCI_STATUS scic_port_get_properties(
SCI_PORT_HANDLE_T port,
SCIC_PORT_PROPERTIES_T * properties
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_port_get_properties(0x%x, 0x%x) enter\n",
port, properties
));
if (
(port == SCI_INVALID_HANDLE)
|| (this_port->logical_port_index == SCIC_SDS_DUMMY_PORT)
)
{
return SCI_FAILURE_INVALID_PORT;
}
properties->index = this_port->logical_port_index;
properties->phy_mask = scic_sds_port_get_phys(this_port);
scic_sds_port_get_sas_address(this_port, &properties->local.sas_address);
scic_sds_port_get_protocols(this_port, &properties->local.protocols);
scic_sds_port_get_attached_sas_address(this_port, &properties->remote.sas_address);
scic_sds_port_get_attached_protocols(this_port, &properties->remote.protocols);
return SCI_SUCCESS;
}
// ---------------------------------------------------------------------------
SCI_STATUS scic_port_hard_reset(
SCI_PORT_HANDLE_T handle,
U32 reset_timeout
)
{
SCIC_SDS_PORT_T * this_port = (SCIC_SDS_PORT_T *)handle;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_port_hard_reset(0x%x, 0x%x) enter\n",
handle, reset_timeout
));
return this_port->state_handlers->parent.reset_handler(
&this_port->parent,
reset_timeout
);
}
/**
* This method assigns the direct attached device ID for this port.
*
* @param[in] this_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(
SCIC_SDS_PORT_T * this_port,
U32 device_id
)
{
U8 index;
for (index = 0; index < SCI_MAX_PHYS; index++)
{
if (this_port->active_phy_mask & (1 << index))
{
scic_sds_phy_setup_transport(this_port->phy_table[index], device_id);
}
}
}
/**
* This method will resume the phy which is already added in the port.
* Activation includes:
* - enabling the Protocol Engine in the silicon.
* - update the reay mask.
*
* @param[in] this_port This is the port on which the phy should be enabled.
* @return none
*/
static
void scic_sds_port_resume_phy(
SCIC_SDS_PORT_T * this_port,
SCIC_SDS_PHY_T * the_phy
)
{
scic_sds_phy_resume (the_phy);
this_port->enabled_phy_mask |= 1 << the_phy->phy_index;
}
/**
* This method 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.
*
* @param[in] this_port This is the port on which the phy should be enabled.
* @param[in] the_phy This is the specific phy which to enable.
* @param[in] 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.
* @param[in] do_resume_phy This parameter specifies whether to resume the phy.
* If this function is called from MPC mode, it will be always true.
* for APC, this will be false, so that phys could be resumed later
*
* @return none
*/
void scic_sds_port_activate_phy(
SCIC_SDS_PORT_T * this_port,
SCIC_SDS_PHY_T * the_phy,
BOOL do_notify_user,
BOOL do_resume_phy
)
{
SCIC_SDS_CONTROLLER_T * controller;
SCI_SAS_IDENTIFY_ADDRESS_FRAME_PROTOCOLS_T protocols;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_sds_port_activate_phy(0x%x,0x%x,0x%x) enter\n",
this_port, the_phy, do_notify_user
));
controller = scic_sds_port_get_controller(this_port);
scic_sds_phy_get_attached_phy_protocols(the_phy, &protocols);
// If this is sata port then the phy has already been resumed
if (!protocols.u.bits.stp_target)
{
if (do_resume_phy == TRUE)
{
scic_sds_port_resume_phy(this_port, the_phy);
}
}
this_port->active_phy_mask |= 1 << the_phy->phy_index;
scic_sds_controller_clear_invalid_phy(controller, the_phy);
if (do_notify_user == TRUE)
scic_cb_port_link_up(this_port->owning_controller, this_port, the_phy);
}
/**
* This method will deactivate the supplied phy in the port.
*
* @param[in] this_port This is the port on which the phy should be
* deactivated.
* @param[in] the_phy This is the specific phy that is no longer
* active in the port.
* @param[in] do_notify_user This parameter specifies whether to inform
* the user (via scic_cb_port_link_down()) as to the fact that
* a new phy as become ready.
*
* @return none
*/
void scic_sds_port_deactivate_phy(
SCIC_SDS_PORT_T * this_port,
SCIC_SDS_PHY_T * the_phy,
BOOL do_notify_user
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_sds_port_deactivate_phy(0x%x,0x%x,0x%x) enter\n",
this_port, the_phy, do_notify_user
));
this_port->active_phy_mask &= ~(1 << the_phy->phy_index);
this_port->enabled_phy_mask &= ~(1 << the_phy->phy_index);
the_phy->max_negotiated_speed = SCI_SAS_NO_LINK_RATE;
// Re-assign the phy back to the LP as if it were a narrow port for APC mode.
// For MPC mode, the phy will remain in the port
if (this_port->owning_controller->oem_parameters.sds1.controller.mode_type
== SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE)
{
SCU_PCSPExCR_WRITE(this_port, the_phy->phy_index, the_phy->phy_index);
}
if (do_notify_user == TRUE)
scic_cb_port_link_down(this_port->owning_controller, this_port, the_phy);
}
/**
* This method will disable the phy and report that the phy is not valid for this
* port object.
*
* @param[in] this_port This is the port on which the phy should be disabled.
* @param[in] the_phy This is the specific phy which to disabled.
*
* @return None
*/
void scic_sds_port_invalid_link_up(
SCIC_SDS_PORT_T * this_port,
SCIC_SDS_PHY_T * the_phy
)
{
SCIC_SDS_CONTROLLER_T * controller = scic_sds_port_get_controller(this_port);
// 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 ((controller->invalid_phy_mask & (1 << the_phy->phy_index)) == 0)
{
scic_sds_controller_set_invalid_phy(controller, the_phy);
scic_cb_port_invalid_link_up(controller, this_port, the_phy);
}
}
/**
* @brief 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.
*
* @param[in] this_port The port for which the wide port condition is to be
* checked.
*
* @return BOOL
* @retval TRUE Is returned if this is a wide ported port.
* @retval FALSE Is returned if this is a narrow port.
*/
static
BOOL scic_sds_port_is_wide(
SCIC_SDS_PORT_T *this_port
)
{
U32 index;
U32 phy_count = 0;
for (index = 0; index < SCI_MAX_PHYS; index++)
{
if (this_port->phy_table[index] != NULL)
{
phy_count++;
}
}
return (phy_count != 1);
}
/**
* @brief 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.
*
* @param[in] this_port The port associated with the phy object.
* @param[in] the_phy The phy object that is trying to go link up.
*
* @return TRUE if the phy object can continue to the link up condition.
* @retval TRUE Is returned if this phy can continue to the ready state.
* @retval FALSE Is returned if can not continue on to the ready state.
*
* @note 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(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *the_phy
)
{
SCI_SAS_IDENTIFY_ADDRESS_FRAME_PROTOCOLS_T protocols;
scic_sds_phy_get_attached_phy_protocols(the_phy, &protocols);
if (
(this_port->logical_port_index != SCIC_SDS_DUMMY_PORT)
&& (protocols.u.bits.stp_target)
)
{
if (scic_sds_port_is_wide(this_port))
{
//direct attached Sata phy cannot be in wide port.
scic_sds_port_invalid_link_up( this_port, the_phy);
return FALSE;
}
else
{
SCIC_SDS_PORT_T *destination_port = &(this_port->owning_controller->port_table[the_phy->phy_index]);
//add the phy to the its logical port for direct attached SATA. The phy will be added
//to port whose port_index will be the phy_index.
SCU_PCSPExCR_WRITE( destination_port, the_phy->phy_index, the_phy->phy_index);
}
}
return TRUE;
}
/**
* @brief This method is the entry point for the phy to inform
* the port that it is now in a ready state
*
* @param[in] this_port
* @param[in] phy
*/
void scic_sds_port_link_up(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *the_phy
)
{
the_phy->is_in_link_training = FALSE;
this_port->state_handlers->link_up_handler(this_port, the_phy);
}
/**
* @brief This method is the entry point for the phy to inform
* the port that it is no longer in a ready state
*
* @param[in] this_port
* @param[in] phy
*/
void scic_sds_port_link_down(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *the_phy
)
{
this_port->state_handlers->link_down_handler(this_port, the_phy);
}
/**
* @brief This method is called to start an IO request on this port.
*
* @param[in] this_port
* @param[in] the_device
* @param[in] the_io_request
*
* @return SCI_STATUS
*/
SCI_STATUS scic_sds_port_start_io(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_REMOTE_DEVICE_T *the_device,
SCIC_SDS_REQUEST_T *the_io_request
)
{
return this_port->state_handlers->start_io_handler(
this_port, the_device, the_io_request);
}
/**
* @brief This method is called to complete an IO request to the port.
*
* @param[in] this_port
* @param[in] the_device
* @param[in] the_io_request
*
* @return SCI_STATUS
*/
SCI_STATUS scic_sds_port_complete_io(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_REMOTE_DEVICE_T *the_device,
SCIC_SDS_REQUEST_T *the_io_request
)
{
return this_port->state_handlers->complete_io_handler(
this_port, the_device, the_io_request);
}
/**
* @brief This method is provided to timeout requests for port operations.
* Mostly its for the port reset operation.
*
* @param[in] port This is the parameter or cookie value that is provided
* to the timer construct operation.
*/
void scic_sds_port_timeout_handler(
void *port
)
{
U32 current_state;
SCIC_SDS_PORT_T * this_port;
this_port = (SCIC_SDS_PORT_T *)port;
current_state = sci_base_state_machine_get_state(
&this_port->parent.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(
&this_port->parent.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.
SCIC_LOG_ERROR((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%x failed to stop before tiemout.\n",
this_port
));
}
else if (current_state == SCI_BASE_PORT_STATE_STOPPING)
{
// if the port is still stopping then the stop has not completed
scic_cb_port_stop_complete(
scic_sds_port_get_controller(this_port),
port,
SCI_FAILURE_TIMEOUT
);
}
else
{
// The port is in the ready state and we have a timer reporting a timeout
// this should not happen.
SCIC_LOG_ERROR((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%x is processing a timeout operation in state %d.\n",
this_port, current_state
));
}
}
// ---------------------------------------------------------------------------
#ifdef SCIC_DEBUG_ENABLED
void scic_sds_port_decrement_request_count(
SCIC_SDS_PORT_T *this_port
)
{
if (this_port->started_request_count == 0)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port object requested to decrement started io count past zero.\n"
));
}
else
{
this_port->started_request_count--;
}
}
#endif
/**
* @brief This function updates the hardwares VIIT entry for this port.
*
* @param[in] this_port
*/
void scic_sds_port_update_viit_entry(
SCIC_SDS_PORT_T *this_port
)
{
SCI_SAS_ADDRESS_T sas_address;
scic_sds_port_get_sas_address(this_port, &sas_address);
scu_port_viit_register_write(
this_port, initiator_sas_address_hi, sas_address.high);
scu_port_viit_register_write(
this_port, initiator_sas_address_lo, sas_address.low);
// This value get cleared just in case its not already cleared
scu_port_viit_register_write(
this_port, reserved, 0);
// We are required to update the status register last
scu_port_viit_register_write(
this_port, status, (
SCU_VIIT_ENTRY_ID_VIIT
| SCU_VIIT_IPPT_INITIATOR
| ((1UL << this_port->physical_port_index) << SCU_VIIT_ENTRY_LPVIE_SHIFT)
| SCU_VIIT_STATUS_ALL_VALID
)
);
}
/**
* @brief 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.
*
* @param[in] this_port This parameter specifies the port for which to
* retrieve the maximum allowed speed.
*
* @return This method returns the maximum negotiated speed of the slowest
* phy in the port.
*/
SCI_SAS_LINK_RATE scic_sds_port_get_max_allowed_speed(
SCIC_SDS_PORT_T * this_port
)
{
U16 index = 0;
SCI_SAS_LINK_RATE max_allowed_speed = SCI_SAS_600_GB;
SCIC_SDS_PHY_T * 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 = this_port->phy_table[index];
if (
(phy != NULL)
&& (scic_sds_port_active_phy(this_port, phy) == TRUE)
&& (phy->max_negotiated_speed < max_allowed_speed)
)
max_allowed_speed = phy->max_negotiated_speed;
}
return max_allowed_speed;
}
/**
* @brief This method passes the event to core user.
* @param[in] this_port The port that a BCN happens.
* @param[in] this_phy The phy that receives BCN.
*
* @return none
*/
void scic_sds_port_broadcast_change_received(
SCIC_SDS_PORT_T * this_port,
SCIC_SDS_PHY_T * this_phy
)
{
//notify the user.
scic_cb_port_bc_change_primitive_recieved(
this_port->owning_controller, this_port, this_phy
);
}
/**
* @brief This API methhod enables the broadcast change notification from
* underneath hardware.
* @param[in] this_port The port that a BCN had been disabled from.
*
* @return none
*/
void scic_port_enable_broadcast_change_notification(
SCI_PORT_HANDLE_T port
)
{
SCIC_SDS_PORT_T * this_port = (SCIC_SDS_PORT_T *)port;
SCIC_SDS_PHY_T * phy;
U32 register_value;
U8 index;
// Loop through all of the phys to enable BCN.
for (index = 0; index < SCI_MAX_PHYS; index++)
{
phy = this_port->phy_table[index];
if ( phy != NULL)
{
register_value = SCU_SAS_LLCTL_READ(phy);
// clear the bit by writing 1.
SCU_SAS_LLCTL_WRITE(phy, register_value);
}
}
}
/**
* @brief This method release resources in for a scic port.
*
* @param[in] controller This parameter specifies the core controller, one of
* its phy's resources are to be released.
* @param[in] this_port This parameter specifies the port whose resourse is to
* be released.
*/
void scic_sds_port_release_resource(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_T *this_port
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"scic_sds_port_release_resource(0x%x, 0x%x)\n",
controller, this_port
));
//Currently, the only resource to be released is a timer.
if (this_port->timer_handle != NULL)
{
scic_cb_timer_destroy(controller, this_port->timer_handle);
this_port->timer_handle = NULL;
}
}
//******************************************************************************
//* PORT STATE MACHINE
//******************************************************************************
//***************************************************************************
//* DEFAULT HANDLERS
//***************************************************************************
/**
* This is the default method for port a start request. It will report a
* warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
SCI_STATUS scic_sds_port_default_start_handler(
SCI_BASE_PORT_T *port
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger((SCIC_SDS_PORT_T *)port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to start while in invalid state %d\n",
port,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine((SCIC_SDS_PORT_T *)port))
));
return SCI_FAILURE_INVALID_STATE;
}
/**
* This is the default method for a port stop request. It will report a
* warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
SCI_STATUS scic_sds_port_default_stop_handler(
SCI_BASE_PORT_T *port
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger((SCIC_SDS_PORT_T *)port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to stop while in invalid state %d\n",
port,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine((SCIC_SDS_PORT_T *)port))
));
return SCI_FAILURE_INVALID_STATE;
}
/**
* This is the default method for a port destruct request. It will report a
* warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
SCI_STATUS scic_sds_port_default_destruct_handler(
SCI_BASE_PORT_T *port
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger((SCIC_SDS_PORT_T *)port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to destruct while in invalid state %d\n",
port,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine((SCIC_SDS_PORT_T *)port))
));
return SCI_FAILURE_INVALID_STATE;
}
/**
* This is the default method for a port reset request. It will report a
* warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
* @param[in] timeout This is the timeout for the reset request to complete.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
SCI_STATUS scic_sds_port_default_reset_handler(
SCI_BASE_PORT_T * port,
U32 timeout
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger((SCIC_SDS_PORT_T *)port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to reset while in invalid state %d\n",
port,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine((SCIC_SDS_PORT_T *)port))
));
return SCI_FAILURE_INVALID_STATE;
}
/**
* This is the default method for a port add phy request. It will report a
* warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
SCI_STATUS scic_sds_port_default_add_phy_handler(
SCI_BASE_PORT_T *port,
SCI_BASE_PHY_T *phy
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger((SCIC_SDS_PORT_T *)port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to add phy 0x%08x while in invalid state %d\n",
port, phy,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine((SCIC_SDS_PORT_T *)port))
));
return SCI_FAILURE_INVALID_STATE;
}
/**
* This is the default method for a port remove phy request. It will report a
* warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
SCI_STATUS scic_sds_port_default_remove_phy_handler(
SCI_BASE_PORT_T *port,
SCI_BASE_PHY_T *phy
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger((SCIC_SDS_PORT_T *)port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to remove phy 0x%08x while in invalid state %d\n",
port, phy,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine((SCIC_SDS_PORT_T *)port))
));
return SCI_FAILURE_INVALID_STATE;
}
/**
* This is the default method for a port unsolicited frame request. It will
* report a warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*
* @todo 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?
*/
SCI_STATUS scic_sds_port_default_frame_handler(
SCIC_SDS_PORT_T * port,
U32 frame_index
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to process frame %d while in invalid state %d\n",
port, frame_index,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine(this_port))
));
scic_sds_controller_release_frame(
scic_sds_port_get_controller(this_port), frame_index
);
return SCI_FAILURE_INVALID_STATE;
}
/**
* This is the default method for a port event request. It will report a
* warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
SCI_STATUS scic_sds_port_default_event_handler(
SCIC_SDS_PORT_T * port,
U32 event_code
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger((SCIC_SDS_PORT_T *)port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to process event 0x%08x while in invalid state %d\n",
port, event_code,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine((SCIC_SDS_PORT_T *)port))
));
return SCI_FAILURE_INVALID_STATE;
}
/**
* This is the default method for a port link up notification. It will report
* a warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
void scic_sds_port_default_link_up_handler(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *phy
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x received link_up notification from phy 0x%08x while in invalid state %d\n",
this_port, phy,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine(this_port))
));
}
/**
* This is the default method for a port link down notification. It will
* report a warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
void scic_sds_port_default_link_down_handler(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *phy
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x received link down notification from phy 0x%08x while in invalid state %d\n",
this_port, phy,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine(this_port))
));
}
/**
* This is the default method for a port start io request. It will report a
* warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
SCI_STATUS scic_sds_port_default_start_io_handler(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_REMOTE_DEVICE_T *device,
SCIC_SDS_REQUEST_T *io_request
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to start io request 0x%08x while in invalid state %d\n",
this_port, io_request,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine(this_port))
));
return SCI_FAILURE_INVALID_STATE;
}
/**
* This is the default method for a port complete io request. It will report
* a warning and exit.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
SCI_STATUS scic_sds_port_default_complete_io_handler(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_REMOTE_DEVICE_T *device,
SCIC_SDS_REQUEST_T *io_request
)
{
SCIC_LOG_WARNING((
sci_base_object_get_logger(this_port),
SCIC_LOG_OBJECT_PORT,
"SCIC Port 0x%08x requested to complete io request 0x%08x while in invalid state %d\n",
this_port, io_request,
sci_base_state_machine_get_state(
scic_sds_port_get_base_state_machine(this_port))
));
return SCI_FAILURE_INVALID_STATE;
}
//****************************************************************************
//* GENERAL STATE HANDLERS
//****************************************************************************
/**
* This is a general complete io request handler for the SCIC_SDS_PORT object.
*
* @param[in] port This is the SCIC_SDS_PORT object on which the io request
* count will be decremented.
* @param[in] device This is the SCIC_SDS_REMOTE_DEVICE object to which the io
* request is being directed. This parameter is not required to
* complete this operation.
* @param[in] io_request This is the request that is being completed on this
* port object. This parameter is not required to complete this
* operation.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
SCI_STATUS scic_sds_port_general_complete_io_handler(
SCIC_SDS_PORT_T *port,
SCIC_SDS_REMOTE_DEVICE_T *device,
SCIC_SDS_REQUEST_T *io_request
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
scic_sds_port_decrement_request_count(this_port);
return SCI_SUCCESS;
}
//****************************************************************************
//* STOPPED STATE HANDLERS
//****************************************************************************
static
BOOL scic_sds_port_requires_scheduler_workaround(
SCIC_SDS_PORT_T * this_port
)
{
if (
(
this_port->owning_controller->logical_port_entries
< this_port->owning_controller->task_context_entries
)
&& (
this_port->owning_controller->logical_port_entries
< this_port->owning_controller->remote_node_entries
)
)
{
return TRUE;
}
return FALSE;
}
/**
* This method takes the 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.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION This SCIC_SDS_PORT
* object could not be started because the port configuration is not
* valid.
* @retval SCI_SUCCESS the start request is successful and the SCIC_SDS_PORT
* object has transitioned to the SCI_BASE_PORT_STATE_READY.
*/
static
SCI_STATUS scic_sds_port_stopped_state_start_handler(
SCI_BASE_PORT_T *port
)
{
U32 phy_mask;
SCI_STATUS status = SCI_SUCCESS;
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
if (this_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;
}
this_port->timer_handle = scic_cb_timer_create(
scic_sds_port_get_controller(this_port),
scic_sds_port_timeout_handler,
this_port
);
if (this_port->timer_handle == SCI_INVALID_HANDLE)
{
return SCI_FAILURE_INSUFFICIENT_RESOURCES;
}
if (scic_sds_port_requires_scheduler_workaround(this_port))
{
if (this_port->reserved_rni == SCU_DUMMY_INDEX)
{
this_port->reserved_rni =
scic_sds_remote_node_table_allocate_remote_node(
&this_port->owning_controller->available_remote_nodes, 1
);
if (this_port->reserved_rni != SCU_DUMMY_INDEX)
{
scic_sds_port_construct_dummy_rnc(
this_port,
this_port->reserved_rni
);
}
else
{
status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
}
}
if (this_port->reserved_tci == SCU_DUMMY_INDEX)
{
// Allocate a TCI and remove the sequence nibble
this_port->reserved_tci =
scic_controller_allocate_io_tag(this_port->owning_controller);
if (this_port->reserved_tci != SCU_DUMMY_INDEX)
{
scic_sds_port_construct_dummy_task(this_port, this_port->reserved_tci);
}
else
{
status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
}
}
}
if (status == SCI_SUCCESS)
{
phy_mask = scic_sds_port_get_phys(this_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(this_port, phy_mask) == TRUE)
{
sci_base_state_machine_change_state(
scic_sds_port_get_base_state_machine(this_port),
SCI_BASE_PORT_STATE_READY
);
}
else
{
status = SCI_FAILURE;
}
}
if (status != SCI_SUCCESS)
{
scic_sds_port_destroy_dummy_resources(this_port);
}
return status;
}
/**
* This method takes the SCIC_SDS_PORT that is in a stopped state and handles
* a stop request. This function takes no action.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS the stop request is successful as the SCIC_SDS_PORT
* object is already stopped.
*/
static
SCI_STATUS scic_sds_port_stopped_state_stop_handler(
SCI_BASE_PORT_T *port
)
{
// We are already stopped so there is nothing to do here
return SCI_SUCCESS;
}
/**
* This method takes the SCIC_SDS_PORT that is in a stopped state and handles
* the destruct request. The stopped state is the only state in which the
* SCIC_SDS_PORT can be destroyed. This function causes the port object to
* transition to the SCI_BASE_PORT_STATE_FINAL.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
SCI_STATUS scic_sds_port_stopped_state_destruct_handler(
SCI_BASE_PORT_T *port
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
sci_base_state_machine_stop(&this_port->parent.state_machine);
return SCI_SUCCESS;
}
/**
* This method takes the 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.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
* @param[in] phy This is the SCI_BASE_PHY object which is cast into a
* SCIC_SDS_PHY object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy
* can not be added to the port.
* @retval SCI_SUCCESS if the phy is added to the port.
*/
static
SCI_STATUS scic_sds_port_stopped_state_add_phy_handler(
SCI_BASE_PORT_T *port,
SCI_BASE_PHY_T *phy
)
{
SCIC_SDS_PORT_T * this_port = (SCIC_SDS_PORT_T *)port;
SCIC_SDS_PHY_T * this_phy = (SCIC_SDS_PHY_T *)phy;
SCI_SAS_ADDRESS_T port_sas_address;
// Read the port assigned SAS Address if there is one
scic_sds_port_get_sas_address(this_port, &port_sas_address);
if (port_sas_address.high != 0 && port_sas_address.low != 0)
{
SCI_SAS_ADDRESS_T phy_sas_address;
// Make sure that the PHY SAS Address matches the SAS Address
// for this port.
scic_sds_phy_get_sas_address(this_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(this_port, this_phy);
}
/**
* This method takes the 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.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
* @param[in] phy This is the SCI_BASE_PHY object which is cast into a
* SCIC_SDS_PHY object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy
* can not be added to the port.
* @retval SCI_SUCCESS if the phy is added to the port.
*/
static
SCI_STATUS scic_sds_port_stopped_state_remove_phy_handler(
SCI_BASE_PORT_T *port,
SCI_BASE_PHY_T *phy
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
SCIC_SDS_PHY_T *this_phy = (SCIC_SDS_PHY_T *)phy;
return scic_sds_port_clear_phy(this_port, this_phy);
}
//****************************************************************************
//* READY STATE HANDLERS
//****************************************************************************
//****************************************************************************
//* RESETTING STATE HANDLERS
//****************************************************************************
//****************************************************************************
//* STOPPING STATE HANDLERS
//****************************************************************************
/**
* This method takes the 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.
*
* @param[in] port This is the SCIC_SDS_PORT object on which the io request
* count will be decremented.
* @param[in] device This is the SCIC_SDS_REMOTE_DEVICE object to which the io
* request is being directed. This parameter is not required to
* complete this operation.
* @param[in] io_request This is the request that is being completed on this
* port object. This parameter is not required to complete this
* operation.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
SCI_STATUS scic_sds_port_stopping_state_complete_io_handler(
SCIC_SDS_PORT_T *port,
SCIC_SDS_REMOTE_DEVICE_T *device,
SCIC_SDS_REQUEST_T *io_request
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
scic_sds_port_decrement_request_count(this_port);
if (this_port->started_request_count == 0)
{
sci_base_state_machine_change_state(
scic_sds_port_get_base_state_machine(this_port),
SCI_BASE_PORT_STATE_STOPPED
);
}
return SCI_SUCCESS;
}
//****************************************************************************
//* RESETTING STATE HANDLERS
//****************************************************************************
/**
* This method will stop a failed port. This causes a transition to the
* stopping state.
*
* @param[in] port This is the port object which is being requested to stop.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
SCI_STATUS scic_sds_port_reset_state_stop_handler(
SCI_BASE_PORT_T *port
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
sci_base_state_machine_change_state(
&this_port->parent.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.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
void scic_sds_port_reset_state_link_up_handler(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *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(this_port, phy, FALSE, TRUE);
}
/**
* This method process link down notifications that occur during a
* port reset operation. Link downs can occur during the reset operation.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
void scic_sds_port_reset_state_link_down_handler(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *phy
)
{
// In the resetting state we don't notify the user regarding
// link up and link down notifications.
scic_sds_port_deactivate_phy(this_port, phy, FALSE);
}
// ---------------------------------------------------------------------------
SCIC_SDS_PORT_STATE_HANDLER_T
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
//******************************************************************************
/**
* This method will enable the SCU Port Task Scheduler for this port object
* but will leave the port task scheduler in a suspended state.
*
* @param[in] this_port This is the port object which to suspend.
*
* @return none
*/
static
void scic_sds_port_enable_port_task_scheduler(
SCIC_SDS_PORT_T *this_port
)
{
U32 pts_control_value;
pts_control_value = scu_port_task_scheduler_read(this_port, control);
pts_control_value |= SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND);
scu_port_task_scheduler_write(this_port, control, pts_control_value);
}
/**
* This method will disable the SCU port task scheduler for this port
* object.
*
* @param[in] this_port This is the port object which to resume.
*
* @return none
*/
static
void scic_sds_port_disable_port_task_scheduler(
SCIC_SDS_PORT_T *this_port
)
{
U32 pts_control_value;
pts_control_value = scu_port_task_scheduler_read(this_port, control);
pts_control_value &= ~( SCU_PTSxCR_GEN_BIT(ENABLE)
| SCU_PTSxCR_GEN_BIT(SUSPEND) );
scu_port_task_scheduler_write(this_port, control, pts_control_value);
}
/**
*
*/
static
void scic_sds_port_post_dummy_remote_node(
SCIC_SDS_PORT_T *this_port
)
{
U32 command;
SCU_REMOTE_NODE_CONTEXT_T * rnc;
if (this_port->reserved_rni != SCU_DUMMY_INDEX)
{
rnc = &(this_port->owning_controller->remote_node_context_table[this_port->reserved_rni]);
rnc->ssp.is_valid = TRUE;
command = (
(SCU_CONTEXT_COMMAND_POST_RNC_32)
| (this_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)
| (this_port->reserved_rni)
);
scic_sds_controller_post_request(this_port->owning_controller, command);
scic_cb_stall_execution(10);
command = (
(SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX)
| (this_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)
| (this_port->reserved_rni)
);
scic_sds_controller_post_request(this_port->owning_controller, command);
}
}
/**
*
*/
static
void scic_sds_port_invalidate_dummy_remote_node(
SCIC_SDS_PORT_T *this_port
)
{
U32 command;
SCU_REMOTE_NODE_CONTEXT_T * rnc;
if (this_port->reserved_rni != SCU_DUMMY_INDEX)
{
rnc = &(this_port->owning_controller->remote_node_context_table[this_port->reserved_rni]);
rnc->ssp.is_valid = FALSE;
scic_cb_stall_execution(10);
command = (
(SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE)
| (this_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)
| (this_port->reserved_rni)
);
scic_sds_controller_post_request(this_port->owning_controller, command);
}
}
//******************************************************************************
//* PORT STATE METHODS
//******************************************************************************
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* entering the SCI_BASE_PORT_STATE_STOPPED. This function sets the stopped
* state handlers for the SCIC_SDS_PORT object and disables the port task
* scheduler in the hardware.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_stopped_state_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port;
this_port = (SCIC_SDS_PORT_T *)object;
scic_sds_port_set_base_state_handlers(
this_port, SCI_BASE_PORT_STATE_STOPPED
);
if (
SCI_BASE_PORT_STATE_STOPPING
== this_port->parent.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(this_port);
}
}
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* exiting the SCI_BASE_STATE_STOPPED. This function enables the SCU hardware
* port task scheduler.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_stopped_state_exit(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port;
this_port = (SCIC_SDS_PORT_T *)object;
// Enable and suspend the port task scheduler
scic_sds_port_enable_port_task_scheduler(this_port);
}
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* entering the SCI_BASE_PORT_STATE_READY. This function sets the ready state
* handlers for the SCIC_SDS_PORT object, reports the port object as not ready
* and starts the ready substate machine.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_ready_state_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port;
this_port = (SCIC_SDS_PORT_T *)object;
// Put the ready state handlers in place though they will not be there long
scic_sds_port_set_base_state_handlers(
this_port, SCI_BASE_PORT_STATE_READY
);
if (
SCI_BASE_PORT_STATE_RESETTING
== this_port->parent.state_machine.previous_state_id
)
{
scic_cb_port_hard_reset_complete(
scic_sds_port_get_controller(this_port),
this_port,
SCI_SUCCESS
);
}
else
{
// Notify the caller that the port is not yet ready
scic_cb_port_not_ready(
scic_sds_port_get_controller(this_port),
this_port,
SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS
);
}
// Post and suspend the dummy remote node context for this
// port.
scic_sds_port_post_dummy_remote_node(this_port);
// Start the ready substate machine
sci_base_state_machine_start(
scic_sds_port_get_ready_substate_machine(this_port)
);
}
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* exiting the SCI_BASE_STATE_READY. This function does nothing.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_ready_state_exit(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port;
this_port = (SCIC_SDS_PORT_T *)object;
sci_base_state_machine_stop(&this_port->ready_substate_machine);
scic_cb_stall_execution(10);
scic_sds_port_invalidate_dummy_remote_node(this_port);
}
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* entering the SCI_BASE_PORT_STATE_RESETTING. This function sets the
* resetting state handlers for the SCIC_SDS_PORT object.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_resetting_state_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port;
this_port = (SCIC_SDS_PORT_T *)object;
scic_sds_port_set_base_state_handlers(
this_port, SCI_BASE_PORT_STATE_RESETTING
);
}
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* exiting the SCI_BASE_STATE_RESETTING. This function does nothing.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_resetting_state_exit(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port;
this_port = (SCIC_SDS_PORT_T *)object;
scic_cb_timer_stop(
scic_sds_port_get_controller(this_port),
this_port->timer_handle
);
}
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping
* state handlers for the SCIC_SDS_PORT object.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_stopping_state_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port;
this_port = (SCIC_SDS_PORT_T *)object;
scic_sds_port_set_base_state_handlers(
this_port, SCI_BASE_PORT_STATE_STOPPING
);
if (this_port->started_request_count == 0)
{
sci_base_state_machine_change_state(
&this_port->parent.state_machine,
SCI_BASE_PORT_STATE_STOPPED
);
}
}
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* exiting the SCI_BASE_STATE_STOPPING. This function does nothing.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_stopping_state_exit(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port;
this_port = (SCIC_SDS_PORT_T *)object;
scic_cb_timer_stop(
scic_sds_port_get_controller(this_port),
this_port->timer_handle
);
scic_cb_timer_destroy(
scic_sds_port_get_controller(this_port),
this_port->timer_handle
);
this_port->timer_handle = NULL;
scic_sds_port_destroy_dummy_resources(this_port);
}
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping
* state handlers for the SCIC_SDS_PORT object.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_failed_state_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port;
this_port = (SCIC_SDS_PORT_T *)object;
scic_sds_port_set_base_state_handlers(
this_port,
SCI_BASE_PORT_STATE_FAILED
);
scic_cb_port_hard_reset_complete(
scic_sds_port_get_controller(this_port),
this_port,
SCI_FAILURE_TIMEOUT
);
}
// ---------------------------------------------------------------------------
SCI_BASE_STATE_T scic_sds_port_state_table[SCI_BASE_PORT_MAX_STATES] =
{
{
SCI_BASE_PORT_STATE_STOPPED,
scic_sds_port_stopped_state_enter,
scic_sds_port_stopped_state_exit
},
{
SCI_BASE_PORT_STATE_STOPPING,
scic_sds_port_stopping_state_enter,
scic_sds_port_stopping_state_exit
},
{
SCI_BASE_PORT_STATE_READY,
scic_sds_port_ready_state_enter,
scic_sds_port_ready_state_exit
},
{
SCI_BASE_PORT_STATE_RESETTING,
scic_sds_port_resetting_state_enter,
scic_sds_port_resetting_state_exit
},
{
SCI_BASE_PORT_STATE_FAILED,
scic_sds_port_failed_state_enter,
NULL
}
};
//******************************************************************************
//* PORT READY SUB-STATE MACHINE
//******************************************************************************
//****************************************************************************
//* READY SUBSTATE HANDLERS
//****************************************************************************
/**
* This method is the general ready state stop handler for the SCIC_SDS_PORT
* object. This function will transition the ready substate machine to its
* final state.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
SCI_STATUS scic_sds_port_ready_substate_stop_handler(
SCI_BASE_PORT_T *port
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
sci_base_state_machine_change_state(
&this_port->parent.state_machine,
SCI_BASE_PORT_STATE_STOPPING
);
return SCI_SUCCESS;
}
/**
* This method is the general ready substate complete io handler for the
* SCIC_SDS_PORT object. This function decrments the outstanding request
* count for this port object.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
* @param[in] device This is the SCI_BASE_REMOTE_DEVICE object which is not
* used in this function.
* @param[in] io_request This is the SCI_BASE_REQUEST object which is not used
* in this function.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
SCI_STATUS scic_sds_port_ready_substate_complete_io_handler(
SCIC_SDS_PORT_T *port,
struct SCIC_SDS_REMOTE_DEVICE *device,
struct SCIC_SDS_REQUEST *io_request
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
scic_sds_port_decrement_request_count(this_port);
return SCI_SUCCESS;
}
static
SCI_STATUS scic_sds_port_ready_substate_add_phy_handler(
SCI_BASE_PORT_T *port,
SCI_BASE_PHY_T *phy
)
{
SCIC_SDS_PORT_T * this_port = (SCIC_SDS_PORT_T *)port;
SCIC_SDS_PHY_T * this_phy = (SCIC_SDS_PHY_T *)phy;
SCI_STATUS status;
status = scic_sds_port_set_phy(this_port, this_phy);
if (status == SCI_SUCCESS)
{
scic_sds_port_general_link_up_handler(this_port, this_phy, TRUE, FALSE);
this_port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
sci_base_state_machine_change_state(
&this_port->ready_substate_machine,
SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
);
}
return status;
}
static
SCI_STATUS scic_sds_port_ready_substate_remove_phy_handler(
SCI_BASE_PORT_T *port,
SCI_BASE_PHY_T *phy
)
{
SCIC_SDS_PORT_T * this_port = (SCIC_SDS_PORT_T *)port;
SCIC_SDS_PHY_T * this_phy = (SCIC_SDS_PHY_T *)phy;
SCI_STATUS status;
status = scic_sds_port_clear_phy(this_port, this_phy);
if (status == SCI_SUCCESS)
{
scic_sds_port_deactivate_phy(this_port, this_phy, TRUE);
this_port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
sci_base_state_machine_change_state(
&this_port->ready_substate_machine,
SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
);
}
return status;
}
//****************************************************************************
//* READY SUBSTATE WAITING HANDLERS
//****************************************************************************
/**
* This method is the ready waiting substate link up handler for the
* SCIC_SDS_PORT object. This methos will report the link up condition for
* this port and will transition to the ready operational substate.
*
* @param[in] this_port This is the SCIC_SDS_PORT object that which has a phy
* that has gone link up.
* @param[in] the_phy This is the SCIC_SDS_PHY object that has gone link up.
*
* @return none
*/
static
void scic_sds_port_ready_waiting_substate_link_up_handler(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *the_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(this_port, the_phy, TRUE, TRUE);
sci_base_state_machine_change_state(
&this_port->ready_substate_machine,
SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
);
}
/**
* This method is the ready waiting substate start io handler for the
* SCIC_SDS_PORT object. The port object can not accept new requests so the
* request is failed.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
* @param[in] device This is the SCI_BASE_REMOTE_DEVICE object which is not
* used in this request.
* @param[in] io_request This is the SCI_BASE_REQUEST object which is not used
* in this function.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
static
SCI_STATUS scic_sds_port_ready_waiting_substate_start_io_handler(
SCIC_SDS_PORT_T *port,
SCIC_SDS_REMOTE_DEVICE_T *device,
SCIC_SDS_REQUEST_T *io_request
)
{
return SCI_FAILURE_INVALID_STATE;
}
//****************************************************************************
//* READY SUBSTATE OPERATIONAL HANDLERS
//****************************************************************************
/**
* This method will casue the port to reset.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
* @param[in] timeout This is the timeout for the reset request to complete.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
SCI_STATUS scic_sds_port_ready_operational_substate_reset_handler(
SCI_BASE_PORT_T * port,
U32 timeout
)
{
SCI_STATUS status = SCI_FAILURE_INVALID_PHY;
U32 phy_index;
SCIC_SDS_PORT_T * this_port = (SCIC_SDS_PORT_T *)port;
SCIC_SDS_PHY_T * selected_phy = SCI_INVALID_HANDLE;
// Select a phy on which we can send the hard reset request.
for (
phy_index = 0;
(phy_index < SCI_MAX_PHYS)
&& (selected_phy == SCI_INVALID_HANDLE);
phy_index++
)
{
selected_phy = this_port->phy_table[phy_index];
if (
(selected_phy != SCI_INVALID_HANDLE)
&& !scic_sds_port_active_phy(this_port, selected_phy)
)
{
// We found a phy but it is not ready select different phy
selected_phy = SCI_INVALID_HANDLE;
}
}
// If we have a phy then go ahead and start the reset procedure
if (selected_phy != SCI_INVALID_HANDLE)
{
status = scic_sds_phy_reset(selected_phy);
if (status == SCI_SUCCESS)
{
scic_cb_timer_start(
scic_sds_port_get_controller(this_port),
this_port->timer_handle,
timeout
);
this_port->not_ready_reason = SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED;
sci_base_state_machine_change_state(
&this_port->parent.state_machine,
SCI_BASE_PORT_STATE_RESETTING
);
}
}
return status;
}
/**
* This method is the ready operational substate link up handler for the
* SCIC_SDS_PORT object. This function notifies the SCI User that the phy has
* gone link up.
*
* @param[in] this_port This is the SCIC_SDS_PORT object that which has a phy
* that has gone link up.
* @param[in] the_phy This is the SCIC_SDS_PHY object that has gone link up.
*
* @return none
*/
static
void scic_sds_port_ready_operational_substate_link_up_handler(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *the_phy
)
{
scic_sds_port_general_link_up_handler(this_port, the_phy, TRUE, TRUE);
}
/**
* This method is the ready operational substate link down handler for the
* 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.
*
* @param[in] this_port This is the SCIC_SDS_PORT object that which has a phy
* that has gone link down.
* @param[in] the_phy This is the SCIC_SDS_PHY object that has gone link down.
*
* @return none
*/
static
void scic_sds_port_ready_operational_substate_link_down_handler(
SCIC_SDS_PORT_T *this_port,
SCIC_SDS_PHY_T *the_phy
)
{
scic_sds_port_deactivate_phy(this_port, the_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 (this_port->active_phy_mask == 0)
{
sci_base_state_machine_change_state(
scic_sds_port_get_ready_substate_machine(this_port),
SCIC_SDS_PORT_READY_SUBSTATE_WAITING
);
}
}
/**
* This method is the ready operational substate start io handler for the
* SCIC_SDS_PORT object. This function incremetns the outstanding request
* count for this port object.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
* @param[in] device This is the SCI_BASE_REMOTE_DEVICE object which is not
* used in this function.
* @param[in] io_request This is the SCI_BASE_REQUEST object which is not used
* in this function.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS
*/
static
SCI_STATUS scic_sds_port_ready_operational_substate_start_io_handler(
SCIC_SDS_PORT_T *port,
SCIC_SDS_REMOTE_DEVICE_T *device,
SCIC_SDS_REQUEST_T *io_request
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)port;
scic_sds_port_increment_request_count(this_port);
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.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
static
SCI_STATUS scic_sds_port_ready_configuring_substate_add_phy_handler(
SCI_BASE_PORT_T *port,
SCI_BASE_PHY_T *phy
)
{
SCIC_SDS_PORT_T * this_port = (SCIC_SDS_PORT_T *)port;
SCIC_SDS_PHY_T * this_phy = (SCIC_SDS_PHY_T *)phy;
SCI_STATUS status;
status = scic_sds_port_set_phy(this_port, this_phy);
if (status == SCI_SUCCESS)
{
scic_sds_port_general_link_up_handler(this_port, this_phy, TRUE, FALSE);
// Re-enter the configuring state since this may be the last phy in
// the port.
sci_base_state_machine_change_state(
&this_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.
*
* @param[in] port This is the SCI_BASE_PORT object which is cast into a
* SCIC_SDS_PORT object.
*
* @return SCI_STATUS
* @retval SCI_FAILURE_INVALID_STATE
*/
static
SCI_STATUS scic_sds_port_ready_configuring_substate_remove_phy_handler(
SCI_BASE_PORT_T *port,
SCI_BASE_PHY_T *phy
)
{
SCIC_SDS_PORT_T * this_port = (SCIC_SDS_PORT_T *)port;
SCIC_SDS_PHY_T * this_phy = (SCIC_SDS_PHY_T *)phy;
SCI_STATUS status;
status = scic_sds_port_clear_phy(this_port, this_phy);
if (status == SCI_SUCCESS)
{
scic_sds_port_deactivate_phy(this_port, this_phy, TRUE);
// Re-enter the configuring state since this may be the last phy in
// the port.
sci_base_state_machine_change_state(
&this_port->ready_substate_machine,
SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
);
}
return status;
}
/**
* 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.
*
* @param[in] port This is the port that is being requested to complete
* the io request.
* @param[in] device This is the device on which the io is completing.
* @param[in] io_request This is the io request that is completing.
*/
static
SCI_STATUS scic_sds_port_ready_configuring_substate_complete_io_handler(
SCIC_SDS_PORT_T *port,
SCIC_SDS_REMOTE_DEVICE_T *device,
SCIC_SDS_REQUEST_T *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;
}
// ---------------------------------------------------------------------------
SCIC_SDS_PORT_STATE_HANDLER_T
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
}
};
/**
* 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
//******************************************************************************
/**
* This method will susped the port task scheduler for this port object.
*
* @param[in] this_port This is the SCIC_SDS_PORT object to suspend.
*
* @return none
*/
void scic_sds_port_suspend_port_task_scheduler(
SCIC_SDS_PORT_T *this_port
)
{
U32 pts_control_value;
pts_control_value = scu_port_task_scheduler_read(this_port, control);
pts_control_value |= SCU_PTSxCR_GEN_BIT(SUSPEND);
scu_port_task_scheduler_write(this_port, control, pts_control_value);
}
/**
* This method will resume the port task scheduler for this port object.
*
* @param[in] this_port This is the SCIC_SDS_PORT object to resume.
*
* @return none
*/
void scic_sds_port_resume_port_task_scheduler(
SCIC_SDS_PORT_T *this_port
)
{
U32 pts_control_value;
pts_control_value = scu_port_task_scheduler_read(this_port, control);
pts_control_value &= ~SCU_PTSxCR_GEN_BIT(SUSPEND);
scu_port_task_scheduler_write(this_port, control, pts_control_value);
}
/**
* This routine will post the dummy request. This will prevent the hardware
* scheduler from posting new requests to the front of the scheduler queue
* causing a starvation problem for currently ongoing requests.
*
* @parm[in] this_port The port on which the task must be posted.
*
* @return none
*/
static
void scic_sds_port_post_dummy_request(
SCIC_SDS_PORT_T *this_port
)
{
U32 command;
SCU_TASK_CONTEXT_T * task_context;
if (this_port->reserved_tci != SCU_DUMMY_INDEX)
{
task_context = scic_sds_controller_get_task_context_buffer(
this_port->owning_controller,
this_port->reserved_tci
);
task_context->abort = 0;
command = (
(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC)
| (this_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)
| (this_port->reserved_tci)
);
scic_sds_controller_post_request(this_port->owning_controller, command);
}
}
/**
* This routine will abort the dummy request. This will alow the hardware to
* power down parts of the silicon to save power.
*
* @parm[in] this_port The port on which the task must be aborted.
*
* @return none
*/
static
void scic_sds_port_abort_dummy_request(
SCIC_SDS_PORT_T *this_port
)
{
U32 command;
SCU_TASK_CONTEXT_T * task_context;
if (this_port->reserved_tci != SCU_DUMMY_INDEX)
{
task_context = scic_sds_controller_get_task_context_buffer(
this_port->owning_controller,
this_port->reserved_tci
);
task_context->abort = 1;
command = (
(SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT)
| (this_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)
| (this_port->reserved_tci)
);
scic_sds_controller_post_request(this_port->owning_controller, command);
}
}
//******************************************************************************
//* PORT READY SUBSTATE METHODS
//******************************************************************************
/**
* This method will perform the actions required by the 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.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_ready_substate_waiting_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)object;
scic_sds_port_set_ready_state_handlers(
this_port, SCIC_SDS_PORT_READY_SUBSTATE_WAITING
);
scic_sds_port_suspend_port_task_scheduler(this_port);
this_port->not_ready_reason = SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS;
if (this_port->active_phy_mask != 0)
{
// At least one of the phys on the port is ready
sci_base_state_machine_change_state(
&this_port->ready_substate_machine,
SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
);
}
}
/**
* This method will perform the actions required by the SCIC_SDS_PORT on
* exiting the SCIC_SDS_PORT_READY_SUBSTATE_WAITING. This function resume the
* PTSG that was suspended at the entry of this state.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_ready_substate_waiting_exit(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)object;
scic_sds_port_resume_port_task_scheduler(this_port);
}
/**
* This method will perform the actions required by the 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.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_ready_substate_operational_enter(
SCI_BASE_OBJECT_T *object
)
{
U32 index;
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)object;
scic_sds_port_set_ready_state_handlers(
this_port, SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
);
scic_cb_port_ready(
scic_sds_port_get_controller(this_port), this_port
);
for (index = 0; index < SCI_MAX_PHYS; index++)
{
if (this_port->phy_table[index] != NULL)
{
scic_sds_port_write_phy_assignment(
this_port, this_port->phy_table[index]
);
//if the bit at the index location for active phy mask is set and
//enabled_phy_mask is not set then resume the phy
if ( ( (this_port->active_phy_mask ^ this_port->enabled_phy_mask) & (1 << index) ) != 0)
{
scic_sds_port_resume_phy (
this_port,
this_port->phy_table[index]
);
}
}
}
scic_sds_port_update_viit_entry(this_port);
// Post the dummy task for the port so the hardware can schedule
// io correctly
scic_sds_port_post_dummy_request(this_port);
}
/**
* This method will perform the actions required by the 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.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_ready_substate_operational_exit(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)object;
// 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(this_port);
scic_cb_port_not_ready(
scic_sds_port_get_controller(this_port),
this_port,
this_port->not_ready_reason
);
}
//******************************************************************************
//* PORT READY CONFIGURING METHODS
//******************************************************************************
/**
* This method will perform the actions required by the 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.
*
* @param[in] object This is the SCI_BASE_OBJECT which is cast to a
* SCIC_SDS_PORT object.
*
* @return none
*/
static
void scic_sds_port_ready_substate_configuring_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_PORT_T *this_port = (SCIC_SDS_PORT_T *)object;
scic_sds_port_set_ready_state_handlers(
this_port, SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
);
if (this_port->active_phy_mask == 0)
{
scic_cb_port_not_ready(
scic_sds_port_get_controller(this_port),
this_port,
SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS
);
sci_base_state_machine_change_state(
&this_port->ready_substate_machine,
SCIC_SDS_PORT_READY_SUBSTATE_WAITING
);
}
//do not wait for IO to go to 0 in this state.
else
{
sci_base_state_machine_change_state(
&this_port->ready_substate_machine,
SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
);
}
}
// ---------------------------------------------------------------------------
SCI_BASE_STATE_T
scic_sds_port_ready_substate_table[SCIC_SDS_PORT_READY_MAX_SUBSTATES] =
{
{
SCIC_SDS_PORT_READY_SUBSTATE_WAITING,
scic_sds_port_ready_substate_waiting_enter,
scic_sds_port_ready_substate_waiting_exit
},
{
SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL,
scic_sds_port_ready_substate_operational_enter,
scic_sds_port_ready_substate_operational_exit
},
{
SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING,
scic_sds_port_ready_substate_configuring_enter,
NULL
}
};