static void sci_apc_agent_configure_ports(struct isci_host *ihost,
struct sci_port_configuration_agent *port_agent,
struct isci_phy *iphy,
bool start_timer)
{
u8 port_index;
enum sci_status status;
struct isci_port *iport;
enum SCIC_SDS_APC_ACTIVITY apc_activity = SCIC_SDS_APC_SKIP_PHY;
iport = sci_port_configuration_agent_find_port(ihost, iphy);
if (iport) {
if (sci_port_is_valid_phy_assignment(iport, iphy->phy_index))
apc_activity = SCIC_SDS_APC_ADD_PHY;
else
apc_activity = SCIC_SDS_APC_SKIP_PHY;
} else {
for (port_index = port_agent->phy_valid_port_range[iphy->phy_index].min_index;
port_index <= port_agent->phy_valid_port_range[iphy->phy_index].max_index;
port_index++) {
iport = &ihost->ports[port_index];
if (sci_port_is_valid_phy_assignment(iport, iphy->phy_index)) {
if (iport->active_phy_mask > (1 << iphy->phy_index)) {
apc_activity = SCIC_SDS_APC_SKIP_PHY;
break;
}
if (iport->physical_port_index == iphy->phy_index) {
if (apc_activity != SCIC_SDS_APC_START_TIMER) {
apc_activity = SCIC_SDS_APC_ADD_PHY;
}
break;
}
if (iport->active_phy_mask == 0) {
apc_activity = SCIC_SDS_APC_START_TIMER;
}
} else if (iport->active_phy_mask != 0) {
apc_activity = SCIC_SDS_APC_SKIP_PHY;
}
}
}
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 = sci_port_add_phy(iport, iphy);
if (status == SCI_SUCCESS) {
port_agent->phy_configured_mask |= (1 << iphy->phy_index);
}
break;
case SCIC_SDS_APC_START_TIMER:
sci_apc_agent_start_timer(port_agent,
SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION);
break;
case SCIC_SDS_APC_SKIP_PHY:
default:
break;
}
}
static void sci_apc_agent_configure_ports(struct isci_host *ihost,
struct sci_port_configuration_agent *port_agent,
struct isci_phy *iphy,
bool start_timer)
{
u8 port_index;
enum sci_status status;
struct isci_port *iport;
enum SCIC_SDS_APC_ACTIVITY apc_activity = SCIC_SDS_APC_SKIP_PHY;
iport = sci_port_configuration_agent_find_port(ihost, iphy);
if (iport) {
if (sci_port_is_valid_phy_assignment(iport, iphy->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[iphy->phy_index].min_index;
port_index <= port_agent->phy_valid_port_range[iphy->phy_index].max_index;
port_index++) {
iport = &ihost->ports[port_index];
/* First we must make sure that this PHY can be added to this Port. */
if (sci_port_is_valid_phy_assignment(iport, iphy->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 (iport->active_phy_mask > (1 << iphy->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 (iport->physical_port_index == iphy->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 (iport->active_phy_mask == 0) {
apc_activity = SCIC_SDS_APC_START_TIMER;
}
} else if (iport->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 = sci_port_add_phy(iport, iphy);
if (status == SCI_SUCCESS) {
port_agent->phy_configured_mask |= (1 << iphy->phy_index);
}
break;
case SCIC_SDS_APC_START_TIMER:
sci_apc_agent_start_timer(port_agent,
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;
}
}
static enum sci_status
sci_mpc_agent_validate_phy_configuration(struct isci_host *ihost,
struct sci_port_configuration_agent *port_agent)
{
u32 phy_mask;
u32 assigned_phy_mask;
struct sci_sas_address sas_address;
struct sci_sas_address phy_assigned_address;
u8 port_index;
u8 phy_index;
assigned_phy_mask = 0;
sas_address.high = 0;
sas_address.low = 0;
for (port_index = 0; port_index < SCI_MAX_PORTS; port_index++) {
phy_mask = ihost->oem_parameters.ports[port_index].phy_mask;
if (!phy_mask)
continue;
if ((phy_mask & ~assigned_phy_mask) == 0) {
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
for (phy_index = 0; phy_index < SCI_MAX_PHYS; phy_index++) {
if ((phy_mask & (1 << phy_index)) == 0)
continue;
sci_phy_get_sas_address(&ihost->phys[phy_index],
&sas_address);
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;
}
while (phy_index < SCI_MAX_PHYS) {
if ((phy_mask & (1 << phy_index)) == 0)
continue;
sci_phy_get_sas_address(&ihost->phys[phy_index],
&phy_assigned_address);
if (sci_sas_address_compare(sas_address, phy_assigned_address) != 0) {
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;
sci_port_add_phy(&ihost->ports[port_index],
&ihost->phys[phy_index]);
assigned_phy_mask |= (1 << phy_index);
}
phy_index++;
}
return sci_port_configuration_agent_validate_ports(ihost, port_agent);
}
/* verify all of the phys in the same port are using the same SAS address */
static enum sci_status
sci_mpc_agent_validate_phy_configuration(struct isci_host *ihost,
struct sci_port_configuration_agent *port_agent)
{
u32 phy_mask;
u32 assigned_phy_mask;
struct sci_sas_address sas_address;
struct sci_sas_address phy_assigned_address;
u8 port_index;
u8 phy_index;
assigned_phy_mask = 0;
sas_address.high = 0;
sas_address.low = 0;
for (port_index = 0; port_index < SCI_MAX_PORTS; port_index++) {
phy_mask = ihost->oem_parameters.ports[port_index].phy_mask;
if (!phy_mask)
continue;
/*
* Make sure that one or more of the phys were not already assinged to
* a different port. */
if ((phy_mask & ~assigned_phy_mask) == 0) {
return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
}
/* Find the starting phy index for this round through the loop */
for (phy_index = 0; phy_index < SCI_MAX_PHYS; phy_index++) {
if ((phy_mask & (1 << phy_index)) == 0)
continue;
sci_phy_get_sas_address(&ihost->phys[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 ((phy_mask & (1 << phy_index)) == 0)
continue;
sci_phy_get_sas_address(&ihost->phys[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;
sci_port_add_phy(&ihost->ports[port_index],
&ihost->phys[phy_index]);
assigned_phy_mask |= (1 << phy_index);
}
phy_index++;
}
return sci_port_configuration_agent_validate_ports(ihost, port_agent);
}