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| Current File : //sys/dev/isci/scil/scic_sds_port_configuration_agent.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_configuration_agent.c 231689 2012-02-14 15:58:49Z jimharris $");
/**
* @file
*
* @brief This file contains the implementation for the public and protected
* methods for the port configuration agent.
*/
#include <dev/isci/scil/scic_controller.h>
#include <dev/isci/scil/scic_sds_logger.h>
#include <dev/isci/scil/scic_sds_controller.h>
#include <dev/isci/scil/scic_sds_port_configuration_agent.h>
#define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT (10)
#define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT (10)
#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION (250)
enum SCIC_SDS_APC_ACTIVITY
{
SCIC_SDS_APC_SKIP_PHY,
SCIC_SDS_APC_ADD_PHY,
SCIC_SDS_APC_START_TIMER,
SCIC_SDS_APC_ACTIVITY_MAX
};
//******************************************************************************
// General port configuration agent routines
//******************************************************************************
/**
* Compare the two SAS Address and
* if SAS Address One is greater than SAS Address Two then return > 0
* else if SAS Address One is less than SAS Address Two return < 0
* Otherwise they are the same return 0
*
* @param[in] address_one A SAS Address to be compared.
* @param[in] address_two A SAS Address to be compared.
*
* @return A signed value of x > 0 > y where
* x is returned for Address One > Address Two
* y is returned for Address One < Address Two
* 0 is returned ofr Address One = Address Two
*/
static
S32 sci_sas_address_compare(
SCI_SAS_ADDRESS_T address_one,
SCI_SAS_ADDRESS_T address_two
)
{
if (address_one.high > address_two.high)
{
return 1;
}
else if (address_one.high < address_two.high)
{
return -1;
}
else if (address_one.low > address_two.low)
{
return 1;
}
else if (address_one.low < address_two.low)
{
return -1;
}
// The two SAS Address must be identical
return 0;
}
/**
* This routine will find a matching port for the phy. This means that the
* port and phy both have the same broadcast sas address and same received
* sas address.
*
* @param[in] controller The controller object used for the port search.
* @param[in] phy The phy object to match.
*
* @return The port address or the SCI_INVALID_HANDLE if there is no matching
* port.
*
* @retvalue port address if the port can be found to match the phy.
* @retvalue SCI_INVALID_HANDLE if there is no matching port for the phy.
*/
static
SCIC_SDS_PORT_T * scic_sds_port_configuration_agent_find_port(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PHY_T * phy
)
{
U8 port_index;
SCI_PORT_HANDLE_T port_handle;
SCI_SAS_ADDRESS_T port_sas_address;
SCI_SAS_ADDRESS_T port_attached_device_address;
SCI_SAS_ADDRESS_T phy_sas_address;
SCI_SAS_ADDRESS_T phy_attached_device_address;
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT | SCIC_LOG_OBJECT_PHY,
"scic_sds_port_confgiruation_agent_find_port(0x%08x, 0x%08x) enter\n",
controller, phy
));
// Since this phy can be a member of a wide port check to see if one or
// more phys match the sent and received SAS address as this phy in which
// case it should participate in the same port.
scic_sds_phy_get_sas_address(phy, &phy_sas_address);
scic_sds_phy_get_attached_sas_address(phy, &phy_attached_device_address);
for (port_index = 0; port_index < SCI_MAX_PORTS; port_index++)
{
if (scic_controller_get_port_handle(controller, port_index, &port_handle) == SCI_SUCCESS)
{
SCIC_SDS_PORT_T * port = (SCIC_SDS_PORT_T *)port_handle;
scic_sds_port_get_sas_address(port, &port_sas_address);
scic_sds_port_get_attached_sas_address(port, &port_attached_device_address);
if (
(sci_sas_address_compare(port_sas_address, phy_sas_address) == 0)
&& (sci_sas_address_compare(port_attached_device_address, phy_attached_device_address) == 0)
)
{
return port;
}
}
}
return SCI_INVALID_HANDLE;
}
/**
* This routine will validate the port configuration is correct for the SCU
* hardware. The SCU hardware allows for port configurations as follows.
* LP0 -> (PE0), (PE0, PE1), (PE0, PE1, PE2, PE3)
* LP1 -> (PE1)
* LP2 -> (PE2), (PE2, PE3)
* LP3 -> (PE3)
*
* @param[in] controller This is the controller object that contains the
* port agent
* @param[in] port_agent This is the port configruation agent for
* the controller.
*
* @return SCI_STATUS
* @retval SCI_SUCCESS the port configuration is valid for this
* port configuration agent.
* @retval SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION the port configuration
* is not valid for this port configuration agent.
*/
static
SCI_STATUS scic_sds_port_configuration_agent_validate_ports(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent
)
{
#if !defined(ARLINGTON_BUILD)
SCI_SAS_ADDRESS_T first_address;
SCI_SAS_ADDRESS_T second_address;
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT,
"scic_sds_port_configuration_agent_validate_ports(0x%08x, 0x%08x) enter\n",
controller, port_agent
));
// Sanity check the max ranges for all the phys the max index
// is always equal to the port range index
if (
(port_agent->phy_valid_port_range[0].max_index != 0)
|| (port_agent->phy_valid_port_range[1].max_index != 1)
|| (port_agent->phy_valid_port_range[2].max_index != 2)
|| (port_agent->phy_valid_port_range[3].max_index != 3)
)
{
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
// This is a request to configure a single x4 port or at least attempt
// to make all the phys into a single port
if (
(port_agent->phy_valid_port_range[0].min_index == 0)
&& (port_agent->phy_valid_port_range[1].min_index == 0)
&& (port_agent->phy_valid_port_range[2].min_index == 0)
&& (port_agent->phy_valid_port_range[3].min_index == 0)
)
{
return SCI_SUCCESS;
}
// This is a degenerate case where phy 1 and phy 2 are assigned
// to the same port this is explicitly disallowed by the hardware
// unless they are part of the same x4 port and this condition was
// already checked above.
if (port_agent->phy_valid_port_range[2].min_index == 1)
{
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
// PE0 and PE3 can never have the same SAS Address unless they
// are part of the same x4 wide port and we have already checked
// for this condition.
scic_sds_phy_get_sas_address(&controller->phy_table[0], &first_address);
scic_sds_phy_get_sas_address(&controller->phy_table[3], &second_address);
if (sci_sas_address_compare(first_address, second_address) == 0)
{
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
// PE0 and PE1 are configured into a 2x1 ports make sure that the
// SAS Address for PE0 and PE2 are different since they can not be
// part of the same port.
if (
(port_agent->phy_valid_port_range[0].min_index == 0)
&& (port_agent->phy_valid_port_range[1].min_index == 1)
)
{
scic_sds_phy_get_sas_address(&controller->phy_table[0], &first_address);
scic_sds_phy_get_sas_address(&controller->phy_table[2], &second_address);
if (sci_sas_address_compare(first_address, second_address) == 0)
{
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
}
// PE2 and PE3 are configured into a 2x1 ports make sure that the
// SAS Address for PE1 and PE3 are different since they can not be
// part of the same port.
if (
(port_agent->phy_valid_port_range[2].min_index == 2)
&& (port_agent->phy_valid_port_range[3].min_index == 3)
)
{
scic_sds_phy_get_sas_address(&controller->phy_table[1], &first_address);
scic_sds_phy_get_sas_address(&controller->phy_table[3], &second_address);
if (sci_sas_address_compare(first_address, second_address) == 0)
{
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
}
#endif // !defined(ARLINGTON_BUILD)
return SCI_SUCCESS;
}
//******************************************************************************
// Manual port configuration agent routines
//******************************************************************************
/**
* This routine will verify that all of the phys in the same port are using
* the same SAS address.
*
* @param[in] controller This is the controller that contains the PHYs to
* be verified.
*/
static
SCI_STATUS scic_sds_mpc_agent_validate_phy_configuration(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent
)
{
U32 phy_mask;
U32 assigned_phy_mask;
SCI_SAS_ADDRESS_T sas_address;
SCI_SAS_ADDRESS_T phy_assigned_address;
U8 port_index;
U8 phy_index;
assigned_phy_mask = 0;
sas_address.high = 0;
sas_address.low = 0;
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT,
"scic_sds_mpc_agent_validate_phy_configuration(0x%08x, 0x%08x) enter\n",
controller, port_agent
));
for (port_index = 0; port_index < SCI_MAX_PORTS; port_index++)
{
phy_mask = controller->oem_parameters.sds1.ports[port_index].phy_mask;
if (phy_mask != 0)
{
// Make sure that one or more of the phys were not already assinged to
// a different port.
if ((phy_mask & ~assigned_phy_mask) == 0)
{
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
// Find the starting phy index for this round through the loop
for (phy_index = 0; phy_index < SCI_MAX_PHYS; phy_index++)
{
if ((1 << phy_index) & phy_mask)
{
scic_sds_phy_get_sas_address(
&controller->phy_table[phy_index], &sas_address
);
// The phy_index can be used as the starting point for the
// port range since the hardware starts all logical ports
// the same as the PE index.
port_agent->phy_valid_port_range[phy_index].min_index = port_index;
port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
if (phy_index != port_index)
{
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
break;
}
}
// See how many additional phys are being added to this logical port.
// Note: We have not moved the current phy_index so we will actually
// compare the startting phy with itself.
// This is expected and required to add the phy to the port.
while (phy_index < SCI_MAX_PHYS)
{
if ((1 << phy_index) & phy_mask)
{
scic_sds_phy_get_sas_address(
&controller->phy_table[phy_index], &phy_assigned_address
);
if (sci_sas_address_compare(sas_address, phy_assigned_address) != 0)
{
// The phy mask specified that this phy is part of the same port
// as the starting phy and it is not so fail this configuration
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
port_agent->phy_valid_port_range[phy_index].min_index = port_index;
port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
scic_sds_port_add_phy(
&controller->port_table[port_index],
&controller->phy_table[phy_index]
);
assigned_phy_mask |= (1 << phy_index);
}
phy_index++;
}
}
}
return scic_sds_port_configuration_agent_validate_ports(controller, port_agent);
}
/**
* This timer routine is used to allow the SCI User to rediscover or change
* device objects before a new series of link up notifications because a
* link down has allowed a better port configuration.
*
* @param[in] controller This is the core controller object which is used
* to obtain the port configuration agent.
*/
static
void scic_sds_mpc_agent_timeout_handler(
void * object
)
{
U8 index;
SCIC_SDS_CONTROLLER_T * controller = (SCIC_SDS_CONTROLLER_T *)object;
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent = &controller->port_agent;
U16 configure_phy_mask;
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT,
"scic_sds_mpc_agent_timeout_handler(0x%08x) enter\n",
controller
));
port_agent->timer_pending = FALSE;
// Find the mask of phys that are reported read but as yet unconfigured into a port
configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
for (index = 0; index < SCI_MAX_PHYS; index++)
{
if (configure_phy_mask & (1 << index))
{
port_agent->link_up_handler(
controller,
port_agent,
scic_sds_phy_get_port(&controller->phy_table[index]),
&controller->phy_table[index]
);
}
}
}
/**
* This method handles the manual port configuration link up notifications.
* Since all ports and phys are associate at initialization time we just turn
* around and notifiy the port object that there is a link up. If this PHY is
* not associated with a port there is no action taken.
*
* @param[in] controller This is the controller object that receives the
* link up notification.
* @param[in] port This is the port object associated with the phy. If the
* is no associated port this is an SCI_INVALID_HANDLE.
* @param[in] phy This is the phy object which has gone ready.
*
* @note Is it possible to get a link up notification from a phy that has
* no assocoated port?
*/
static
void scic_sds_mpc_agent_link_up(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent,
SCIC_SDS_PORT_T * port,
SCIC_SDS_PHY_T * phy
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT | SCIC_LOG_OBJECT_PHY,
"scic_sds_mpc_agent_link_up(0x%08x, 0x%08x, 0x%08x, 0x%08x) enter\n",
controller, port_agent, port, phy
));
// If the port has an invalid handle then the phy was not assigned to
// a port. This is because the phy was not given the same SAS Address
// as the other PHYs in the port.
if (port != SCI_INVALID_HANDLE)
{
port_agent->phy_ready_mask |= (1 << scic_sds_phy_get_index(phy));
scic_sds_port_link_up(port, phy);
if ((port->active_phy_mask & (1 << scic_sds_phy_get_index(phy))) != 0)
{
port_agent->phy_configured_mask |= (1 << scic_sds_phy_get_index(phy));
}
}
}
/**
* This method handles the manual port configuration link down notifications.
* Since all ports and phys are associated at initialization time we just turn
* around and notifiy the port object of the link down event. If this PHY is
* not associated with a port there is no action taken.
*
* @param[in] controller This is the controller object that receives the
* link down notification.
* @param[in] port This is the port object associated with the phy. If the
* is no associated port this is an SCI_INVALID_HANDLE. The port
* is an invalid handle only if the phy was never port of this
* port. This happens when the phy is not broadcasting the same
* SAS address as the other phys in the assigned port.
* @param[in] phy This is the phy object which has gone link down.
*
* @note Is it possible to get a link down notification from a phy that has
* no assocoated port?
*/
static
void scic_sds_mpc_agent_link_down(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent,
SCIC_SDS_PORT_T * port,
SCIC_SDS_PHY_T * phy
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT | SCIC_LOG_OBJECT_PHY,
"scic_sds_mpc_agent_link_down(0x%08x, 0x%08x, 0x%08x, 0x%08x) enter\n",
controller, port_agent, port, phy
));
if (port != SCI_INVALID_HANDLE)
{
// If we can form a new port from the remainder of the phys then we want
// to start the timer to allow the SCI User to cleanup old devices and
// rediscover the port before rebuilding the port with the phys that
// remain in the ready state.
port_agent->phy_ready_mask &= ~(1 << scic_sds_phy_get_index(phy));
port_agent->phy_configured_mask &= ~(1 << scic_sds_phy_get_index(phy));
// Check to see if there are more phys waiting to be configured into a port.
// If there are allow the SCI User to tear down this port, if necessary, and
// then reconstruc the port after the timeout.
if (
(port_agent->phy_configured_mask == 0x0000)
&& (port_agent->phy_ready_mask != 0x0000)
&& !port_agent->timer_pending
)
{
port_agent->timer_pending = TRUE;
scic_cb_timer_start(
controller,
port_agent->timer,
SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT
);
}
scic_sds_port_link_down(port, phy);
}
}
//******************************************************************************
// Automatic port configuration agent routines
//******************************************************************************
/**
* This routine will verify that the phys are assigned a valid SAS address for
* automatic port configuration mode.
*/
static
SCI_STATUS scic_sds_apc_agent_validate_phy_configuration(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent
)
{
U8 phy_index;
U8 port_index;
SCI_SAS_ADDRESS_T sas_address;
SCI_SAS_ADDRESS_T phy_assigned_address;
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT,
"scic_sds_apc_agent_validate_phy_configuration(0x%08x, 0x%08x) enter\n",
controller, port_agent
));
phy_index = 0;
while (phy_index < SCI_MAX_PHYS)
{
port_index = phy_index;
// Get the assigned SAS Address for the first PHY on the controller.
scic_sds_phy_get_sas_address(
&controller->phy_table[phy_index], &sas_address
);
while (++phy_index < SCI_MAX_PHYS)
{
scic_sds_phy_get_sas_address(
&controller->phy_table[phy_index], &phy_assigned_address
);
// Verify each of the SAS address are all the same for every PHY
if (sci_sas_address_compare(sas_address, phy_assigned_address) == 0)
{
port_agent->phy_valid_port_range[phy_index].min_index = port_index;
port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
}
else
{
port_agent->phy_valid_port_range[phy_index].min_index = phy_index;
port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
break;
}
}
}
return scic_sds_port_configuration_agent_validate_ports(controller, port_agent);
}
/**
* This routine will restart the automatic port configuration timeout
* timer for the next time period. This could be caused by either a
* link down event or a link up event where we can not yet tell to which
* port a phy belongs.
*
* @param[in] controller This is the controller that to which the port
* agent is assigned.
* @param[in] port_agent This is the port agent that is requesting the
* timer start operation.
* @param[in] phy This is the phy that has caused the timer operation to
* be scheduled.
* @param[in] timeout This is the timeout in ms.
*/
static
void scic_sds_apc_agent_start_timer(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent,
SCIC_SDS_PHY_T * phy,
U32 timeout
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT | SCIC_LOG_OBJECT_PHY,
"scic_sds_apc_agent_start_timer(0x%08x, 0x%08x, 0x%08x, 0x%08x) enter\n",
controller, port_agent, phy, timeout
));
if (port_agent->timer_pending)
{
scic_cb_timer_stop(controller, port_agent->timer);
}
port_agent->timer_pending = TRUE;
scic_cb_timer_start(controller, port_agent->timer, timeout);
}
/**
* This method handles the automatic port configuration for link up notifications.
*
* @param[in] controller This is the controller object that receives the
* link up notification.
* @param[in] phy This is the phy object which has gone link up.
* @param[in] start_timer This tells the routine if it should start the timer for
* any phys that might be added to a port in the future.
*/
static
void scic_sds_apc_agent_configure_ports(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent,
SCIC_SDS_PHY_T * phy,
BOOL start_timer
)
{
U8 port_index;
SCI_STATUS status;
SCIC_SDS_PORT_T * port;
SCI_PORT_HANDLE_T port_handle;
enum SCIC_SDS_APC_ACTIVITY apc_activity = SCIC_SDS_APC_SKIP_PHY;
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT | SCIC_LOG_OBJECT_PHY,
"scic_sds_apc_agent_configure_ports(0x%08x, 0x%08x, 0x%08x, %d) enter\n",
controller, port_agent, phy, start_timer
));
port = scic_sds_port_configuration_agent_find_port(controller, phy);
if (port != SCI_INVALID_HANDLE)
{
if (scic_sds_port_is_valid_phy_assignment(port, phy->phy_index))
apc_activity = SCIC_SDS_APC_ADD_PHY;
else
apc_activity = SCIC_SDS_APC_SKIP_PHY;
}
else
{
// There is no matching Port for this PHY so lets search through the
// Ports and see if we can add the PHY to its own port or maybe start
// the timer and wait to see if a wider port can be made.
//
// Note the break when we reach the condition of the port id == phy id
for (
port_index = port_agent->phy_valid_port_range[phy->phy_index].min_index;
port_index <= port_agent->phy_valid_port_range[phy->phy_index].max_index;
port_index++
)
{
scic_controller_get_port_handle(controller, port_index, &port_handle);
port = (SCIC_SDS_PORT_T *)port_handle;
// First we must make sure that this PHY can be added to this Port.
if (scic_sds_port_is_valid_phy_assignment(port, phy->phy_index))
{
// Port contains a PHY with a greater PHY ID than the current
// PHY that has gone link up. This phy can not be part of any
// port so skip it and move on.
if (port->active_phy_mask > (1 << phy->phy_index))
{
apc_activity = SCIC_SDS_APC_SKIP_PHY;
break;
}
// We have reached the end of our Port list and have not found
// any reason why we should not either add the PHY to the port
// or wait for more phys to become active.
if (port->physical_port_index == phy->phy_index)
{
// The Port either has no active PHYs.
// Consider that if the port had any active PHYs we would have
// or active PHYs with
// a lower PHY Id than this PHY.
if (apc_activity != SCIC_SDS_APC_START_TIMER)
{
apc_activity = SCIC_SDS_APC_ADD_PHY;
}
break;
}
// The current Port has no active PHYs and this PHY could be part
// of this Port. Since we dont know as yet setup to start the
// timer and see if there is a better configuration.
if (port->active_phy_mask == 0)
{
apc_activity = SCIC_SDS_APC_START_TIMER;
}
}
else if (port->active_phy_mask != 0)
{
// The Port has an active phy and the current Phy can not
// participate in this port so skip the PHY and see if
// there is a better configuration.
apc_activity = SCIC_SDS_APC_SKIP_PHY;
}
}
}
// Check to see if the start timer operations should instead map to an
// add phy operation. This is caused because we have been waiting to
// add a phy to a port but could not becuase the automatic port
// configuration engine had a choice of possible ports for the phy.
// Since we have gone through a timeout we are going to restrict the
// choice to the smallest possible port.
if (
(start_timer == FALSE)
&& (apc_activity == SCIC_SDS_APC_START_TIMER)
)
{
apc_activity = SCIC_SDS_APC_ADD_PHY;
}
switch (apc_activity)
{
case SCIC_SDS_APC_ADD_PHY:
status = scic_sds_port_add_phy(port, phy);
if (status == SCI_SUCCESS)
{
port_agent->phy_configured_mask |= (1 << phy->phy_index);
}
break;
case SCIC_SDS_APC_START_TIMER:
scic_sds_apc_agent_start_timer(
controller, port_agent, phy, SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION
);
break;
case SCIC_SDS_APC_SKIP_PHY:
default:
// do nothing the PHY can not be made part of a port at this time.
break;
}
}
/**
* This method handles the automatic port configuration for link up notifications.
*
* @param[in] controller This is the controller object that receives the
* link up notification.
* @param[in] port This is the port object associated with the phy. If the
* is no associated port this is an SCI_INVALID_HANDLE.
* @param[in] phy This is the phy object which has gone link up.
*
* @note Is it possible to get a link down notification from a phy that has
* no assocoated port?
*/
static
void scic_sds_apc_agent_link_up(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent,
SCIC_SDS_PORT_T * port,
SCIC_SDS_PHY_T * phy
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT | SCIC_LOG_OBJECT_PHY,
"scic_sds_apc_agent_link_up(0x%08x, 0x%08x, 0x%08x, 0x%08x) enter\n",
controller, port_agent, port, phy
));
//the phy is not the part of this port, configure the port with this phy
if (port == SCI_INVALID_HANDLE)
{
port_agent->phy_ready_mask |= (1 << scic_sds_phy_get_index(phy));
scic_sds_apc_agent_start_timer(
controller, port_agent, phy, SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION
);
}
else
{
//the phy is already the part of the port
//if the PORT'S state is resetting then the link up is from port hard reset
//in this case, we need to tell the port that link up is recieved
if ( SCI_BASE_PORT_STATE_RESETTING
== port->parent.state_machine.current_state_id
)
{
//notify the port that port needs to be ready
port_agent->phy_ready_mask |= (1 << scic_sds_phy_get_index(phy));
scic_sds_port_link_up(port, phy);
}
else
{
ASSERT (0);
}
}
}
/**
* This method handles the automatic port configuration link down notifications.
* If this PHY is * not associated with a port there is no action taken.
*
* @param[in] controller This is the controller object that receives the
* link down notification.
* @param[in] port This is the port object associated with the phy. If the
* is no associated port this is an SCI_INVALID_HANDLE.
* @param[in] phy This is the phy object which has gone link down.
*
* @note Is it possible to get a link down notification from a phy that has
* no assocoated port?
*/
static
void scic_sds_apc_agent_link_down(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent,
SCIC_SDS_PORT_T * port,
SCIC_SDS_PHY_T * phy
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT | SCIC_LOG_OBJECT_PHY,
"scic_sds_apc_agent_link_down(0x%08x, 0x%08x, 0x%08x, 0x%08x) enter\n",
controller, port_agent, port, phy
));
port_agent->phy_ready_mask &= ~(1 << scic_sds_phy_get_index(phy));
if (port != SCI_INVALID_HANDLE)
{
if (port_agent->phy_configured_mask & (1 << phy->phy_index))
{
SCI_STATUS status;
status = scic_sds_port_remove_phy(port, phy);
if (status == SCI_SUCCESS)
{
port_agent->phy_configured_mask &= ~(1 << phy->phy_index);
}
}
}
}
/**
* This routine will try to configure the phys into ports when the timer fires.
*
* @param[in] object This is actually the controller that needs to have the
* pending phys configured.
*/
static
void scic_sds_apc_agent_timeout_handler(
void * object
)
{
U32 index;
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent;
SCIC_SDS_CONTROLLER_T * controller = (SCIC_SDS_CONTROLLER_T *)object;
U16 configure_phy_mask;
port_agent = scic_sds_controller_get_port_configuration_agent(controller);
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT,
"scic_sds_apc_agent_timeout_handler(0x%08x) enter\n",
controller
));
port_agent->timer_pending = FALSE;
configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
if (configure_phy_mask != 0x00)
{
for (index = 0; index < SCI_MAX_PHYS; index++)
{
if (configure_phy_mask & (1 << index))
{
scic_sds_apc_agent_configure_ports(
controller, port_agent, &controller->phy_table[index], FALSE
);
}
}
//Notify the controller ports are configured.
if (
(port_agent->phy_ready_mask == port_agent->phy_configured_mask) &&
(controller->next_phy_to_start == SCI_MAX_PHYS) &&
(controller->phy_startup_timer_pending == FALSE)
)
{
// The controller has successfully finished the start process.
// Inform the SCI Core user and transition to the READY state.
if (scic_sds_controller_is_start_complete(controller) == TRUE)
{
scic_sds_controller_port_agent_configured_ports(controller);
}
}
}
}
//******************************************************************************
// Public port configuration agent routines
//******************************************************************************
/**
* This method will construct the port configuration agent for operation.
* This call is universal for both manual port configuration and automatic
* port configuration modes.
*
* @param[in] port_agent This is the port configuration agent for this
* controller object.
*/
void scic_sds_port_configuration_agent_construct(
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent
)
{
U32 index;
port_agent->phy_configured_mask = 0x00;
port_agent->phy_ready_mask = 0x00;
port_agent->link_up_handler = NULL;
port_agent->link_down_handler = NULL;
port_agent->timer_pending = FALSE;
port_agent->timer = NULL;
for (index = 0; index < SCI_MAX_PORTS; index++)
{
port_agent->phy_valid_port_range[index].min_index = 0;
port_agent->phy_valid_port_range[index].max_index = 0;
}
}
/**
* This method will construct the port configuration agent for this controller.
*
* @param[in] controller This is the controller object for which the port
* agent is being initialized.
*
* @param[in] port_agent This is the port configuration agent that is being
* initialized. The initialization path is handled differntly
* for the automatic port configuration agent and the manual port
* configuration agent.
*
* @return
*/
SCI_STATUS scic_sds_port_configuration_agent_initialize(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent
)
{
SCI_STATUS status = SCI_SUCCESS;
enum SCIC_PORT_CONFIGURATION_MODE mode;
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER | SCIC_LOG_OBJECT_PORT,
"scic_sds_port_configuration_agent_initialize(0x%08x, 0x%08x) enter\n",
controller, port_agent
));
mode = controller->oem_parameters.sds1.controller.mode_type;
if (mode == SCIC_PORT_MANUAL_CONFIGURATION_MODE)
{
status = scic_sds_mpc_agent_validate_phy_configuration(controller, port_agent);
port_agent->link_up_handler = scic_sds_mpc_agent_link_up;
port_agent->link_down_handler = scic_sds_mpc_agent_link_down;
port_agent->timer = scic_cb_timer_create(
controller,
scic_sds_mpc_agent_timeout_handler,
controller
);
}
else
{
status = scic_sds_apc_agent_validate_phy_configuration(controller, port_agent);
port_agent->link_up_handler = scic_sds_apc_agent_link_up;
port_agent->link_down_handler = scic_sds_apc_agent_link_down;
port_agent->timer = scic_cb_timer_create(
controller,
scic_sds_apc_agent_timeout_handler,
controller
);
}
// Make sure we have actually gotten a timer
if (status == SCI_SUCCESS && port_agent->timer == NULL)
{
SCIC_LOG_ERROR((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_CONTROLLER,
"Controller 0x%x automatic port configuration agent could not get timer.\n",
controller
));
status = SCI_FAILURE;
}
return status;
}
/**
* This method will destroy the port configuration agent for this controller.
*
* @param[in] controller This is the controller object for which the port
* agent is being destroyed.
*
* @param[in] port_agent This is the port configuration agent that is being
* destroyed.
*
* @return
*/
void scic_sds_port_configuration_agent_destroy(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent
)
{
if (port_agent->timer_pending == TRUE)
{
scic_cb_timer_stop(controller, port_agent->timer);
}
scic_cb_timer_destroy(controller, port_agent->timer);
port_agent->timer_pending = FALSE;
port_agent->timer = NULL;
}
/**
* @brief This method release resources in for a scic port configuration agent.
*
* @param[in] controller This parameter specifies the core controller, one of
* its phy's resources are to be released.
* @param[in] this_phy This parameter specifies the phy whose resourse is to
* be released.
*/
void scic_sds_port_configuration_agent_release_resource(
SCIC_SDS_CONTROLLER_T * controller,
SCIC_SDS_PORT_CONFIGURATION_AGENT_T * port_agent
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(controller),
SCIC_LOG_OBJECT_PORT,
"scic_sds_port_configuration_agent_release_resource(0x%x, 0x%x)\n",
controller, port_agent
));
//Currently, the only resource to be released is a timer.
if (port_agent->timer != NULL)
{
scic_cb_timer_destroy(controller, port_agent->timer);
port_agent->timer = NULL;
}
}