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isci: fix for asserts during aborts/resets to SAS/SATA in APC mode 

Sending aborts/resets to SAS/SATA targets in APC mode eventually causes
an assert in scic_sds_apc_agent_link_up().  We need to handle the hard reset
case for apc mode ports.

Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Piotr Sawicki 2011-02-23 00:09:14 -08:00 committed by Dan Williams
parent 52b957c80c
commit b3824292cb
1 changed files with 24 additions and 12 deletions
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36
drivers/scsi/isci/core/scic_sds_port_configuration_agent.c
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@ -676,28 +676,40 @@ static void scic_sds_apc_agent_configure_ports(
}
/**
*
* @controller: This is the controller object that receives the link up
* scic_sds_apc_agent_link_up - handle apc link up events
* @scic: This is the controller object that receives the link up
* notification.
* @port: This is the port object associated with the phy. If the is no
* @sci_port: This is the port object associated with the phy. If the is no
* associated port this is an NULL.
* @phy: This is the phy object which has gone link up.
* @sci_phy: This is the phy object which has gone link up.
*
* This method handles the automatic port configuration for link up
* notifications. Is it possible to get a link down notification from a phy
* that has no assocoated port?
*/
static void scic_sds_apc_agent_link_up(
struct scic_sds_controller *controller,
struct scic_sds_port_configuration_agent *port_agent,
struct scic_sds_port *port,
struct scic_sds_phy *phy)
static void scic_sds_apc_agent_link_up(struct scic_sds_controller *scic,
struct scic_sds_port_configuration_agent *port_agent,
struct scic_sds_port *sci_port,
struct scic_sds_phy *sci_phy)
{
BUG_ON(port != NULL);
u8 phy_index = sci_phy->phy_index;
port_agent->phy_ready_mask |= (1 << scic_sds_phy_get_index(phy));
if (!sci_port) {
/* the phy is not the part of this port */
port_agent->phy_ready_mask |= 1 << phy_index;
scic_sds_apc_agent_configure_ports(scic, port_agent, sci_phy, true);
} else {
/* the phy is already the part of the port */
u32 port_state = sci_port->parent.state_machine.current_state_id;
scic_sds_apc_agent_configure_ports(controller, port_agent, phy, true);
/* if the PORT'S state is resetting then the link up is from
* port hard reset in this case, we need to tell the port
* that link up is recieved
*/
BUG_ON(port_state != SCI_BASE_PORT_STATE_RESETTING);
port_agent->phy_ready_mask |= 1 << phy_index;
scic_sds_port_link_up(sci_port, sci_phy);
}
}
/**