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@@ -53,11 +53,13 @@
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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-#include <linux/workqueue.h>
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#include "isci.h"
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-#include "scic_port.h"
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#include "port.h"
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#include "request.h"
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+#include "timers.h"
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+
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+#define SCIC_SDS_PORT_HARD_RESET_TIMEOUT (1000)
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+#define SCU_DUMMY_INDEX (0xFFFF)
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static void isci_port_change_state(struct isci_port *iport, enum isci_status status)
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{
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@@ -73,44 +75,87 @@ static void isci_port_change_state(struct isci_port *iport, enum isci_status sta
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spin_unlock_irqrestore(&iport->state_lock, flags);
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}
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-void isci_port_init(struct isci_port *iport, struct isci_host *ihost, int index)
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+/*
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+ * This function will indicate which protocols are supported by this port.
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+ * @sci_port: a handle corresponding to the SAS port for which to return the
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+ * supported protocols.
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+ * @protocols: This parameter specifies a pointer to a data structure
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+ * which the core will copy the protocol values for the port from the
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+ * transmit_identification register.
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+ */
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+static void
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+scic_sds_port_get_protocols(struct scic_sds_port *sci_port,
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+ struct scic_phy_proto *protocols)
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{
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- INIT_LIST_HEAD(&iport->remote_dev_list);
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- INIT_LIST_HEAD(&iport->domain_dev_list);
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- spin_lock_init(&iport->state_lock);
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- init_completion(&iport->start_complete);
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- iport->isci_host = ihost;
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- isci_port_change_state(iport, isci_freed);
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+ u8 index;
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+
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+ protocols->all = 0;
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+
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+ for (index = 0; index < SCI_MAX_PHYS; index++) {
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+ if (sci_port->phy_table[index] != NULL) {
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+ scic_sds_phy_get_protocols(sci_port->phy_table[index],
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+ protocols);
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+ }
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+ }
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}
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/**
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- * isci_port_get_state() - This function gets the status of the port object.
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- * @isci_port: This parameter points to the isci_port object
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+ * This method requests a list (mask) of the phys contained in the supplied SAS
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+ * port.
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+ * @sci_port: a handle corresponding to the SAS port for which to return the
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+ * phy mask.
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*
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- * status of the object as a isci_status enum.
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+ * Return a bit mask indicating which phys are a part of this port. Each bit
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+ * corresponds to a phy identifier (e.g. bit 0 = phy id 0).
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*/
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-enum isci_status isci_port_get_state(
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- struct isci_port *isci_port)
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+static u32 scic_sds_port_get_phys(struct scic_sds_port *sci_port)
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{
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- return isci_port->status;
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+ u32 index;
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+ u32 mask;
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+
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+ mask = 0;
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+
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+ for (index = 0; index < SCI_MAX_PHYS; index++) {
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+ if (sci_port->phy_table[index] != NULL) {
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+ mask |= (1 << index);
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+ }
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+ }
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+
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+ return mask;
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}
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-void isci_port_bc_change_received(struct isci_host *ihost,
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- struct scic_sds_port *sci_port,
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- struct scic_sds_phy *sci_phy)
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+/**
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+ * scic_port_get_properties() - This method simply returns the properties
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+ * regarding the port, such as: physical index, protocols, sas address, etc.
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+ * @port: this parameter specifies the port for which to retrieve the physical
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+ * index.
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+ * @properties: This parameter specifies the properties structure into which to
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+ * copy the requested information.
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+ *
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+ * Indicate if the user specified a valid port. SCI_SUCCESS This value is
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+ * returned if the specified port was valid. SCI_FAILURE_INVALID_PORT This
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+ * value is returned if the specified port is not valid. When this value is
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+ * returned, no data is copied to the properties output parameter.
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+ */
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+static enum sci_status scic_port_get_properties(struct scic_sds_port *port,
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+ struct scic_port_properties *prop)
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{
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- struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
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+ if ((port == NULL) ||
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+ (port->logical_port_index == SCIC_SDS_DUMMY_PORT))
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+ return SCI_FAILURE_INVALID_PORT;
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- dev_dbg(&ihost->pdev->dev, "%s: iphy = %p, sas_phy = %p\n",
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- __func__, iphy, &iphy->sas_phy);
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+ prop->index = port->logical_port_index;
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+ prop->phy_mask = scic_sds_port_get_phys(port);
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+ scic_sds_port_get_sas_address(port, &prop->local.sas_address);
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+ scic_sds_port_get_protocols(port, &prop->local.protocols);
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+ scic_sds_port_get_attached_sas_address(port, &prop->remote.sas_address);
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- ihost->sas_ha.notify_port_event(&iphy->sas_phy, PORTE_BROADCAST_RCVD);
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- scic_port_enable_broadcast_change_notification(sci_port);
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+ return SCI_SUCCESS;
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}
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-void isci_port_link_up(struct isci_host *isci_host,
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- struct scic_sds_port *port,
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- struct scic_sds_phy *phy)
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+static void isci_port_link_up(struct isci_host *isci_host,
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+ struct scic_sds_port *port,
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+ struct scic_sds_phy *phy)
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{
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unsigned long flags;
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struct scic_port_properties properties;
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@@ -184,8 +229,9 @@ void isci_port_link_up(struct isci_host *isci_host,
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* @port: This parameter specifies the isci port with the active link.
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*
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*/
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-void isci_port_link_down(struct isci_host *isci_host, struct isci_phy *isci_phy,
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- struct isci_port *isci_port)
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+static void isci_port_link_down(struct isci_host *isci_host,
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+ struct isci_phy *isci_phy,
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+ struct isci_port *isci_port)
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{
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struct isci_remote_device *isci_device;
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@@ -230,30 +276,6 @@ void isci_port_link_down(struct isci_host *isci_host, struct isci_phy *isci_phy,
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}
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-/**
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- * isci_port_deformed() - This function is called by libsas when a port becomes
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- * inactive.
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- * @phy: This parameter specifies the libsas phy with the inactive port.
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- *
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- */
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-void isci_port_deformed(
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- struct asd_sas_phy *phy)
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-{
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- pr_debug("%s: sas_phy = %p\n", __func__, phy);
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-}
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-
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-/**
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- * isci_port_formed() - This function is called by libsas when a port becomes
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- * active.
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- * @phy: This parameter specifies the libsas phy with the active port.
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- *
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- */
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-void isci_port_formed(
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- struct asd_sas_phy *phy)
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-{
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- pr_debug("%s: sas_phy = %p, sas_port = %p\n", __func__, phy, phy->port);
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-}
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-
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/**
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* isci_port_ready() - This function is called by the sci core when a link
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* becomes ready.
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@@ -261,7 +283,7 @@ void isci_port_formed(
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* @port: This parameter specifies the sci port with the active link.
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*
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*/
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-void isci_port_ready(struct isci_host *isci_host, struct isci_port *isci_port)
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+static void isci_port_ready(struct isci_host *isci_host, struct isci_port *isci_port)
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{
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dev_dbg(&isci_host->pdev->dev,
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"%s: isci_port = %p\n", __func__, isci_port);
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@@ -279,12 +301,19 @@ void isci_port_ready(struct isci_host *isci_host, struct isci_port *isci_port)
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* @port: This parameter specifies the sci port with the active link.
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*
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*/
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-void isci_port_not_ready(struct isci_host *isci_host, struct isci_port *isci_port)
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+static void isci_port_not_ready(struct isci_host *isci_host, struct isci_port *isci_port)
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{
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dev_dbg(&isci_host->pdev->dev,
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"%s: isci_port = %p\n", __func__, isci_port);
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}
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+static void isci_port_stop_complete(struct scic_sds_controller *scic,
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+ struct scic_sds_port *sci_port,
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+ enum sci_status completion_status)
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+{
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+ dev_dbg(&scic_to_ihost(scic)->pdev->dev, "Port stop complete\n");
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+}
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+
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/**
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* isci_port_hard_reset_complete() - This function is called by the sci core
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* when the hard reset complete notification has been received.
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@@ -293,8 +322,8 @@ void isci_port_not_ready(struct isci_host *isci_host, struct isci_port *isci_por
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* process.
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*
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*/
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-void isci_port_hard_reset_complete(struct isci_port *isci_port,
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- enum sci_status completion_status)
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+static void isci_port_hard_reset_complete(struct isci_port *isci_port,
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+ enum sci_status completion_status)
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{
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dev_dbg(&isci_port->isci_host->pdev->dev,
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"%s: isci_port = %p, completion_status=%x\n",
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@@ -306,62 +335,2364 @@ void isci_port_hard_reset_complete(struct isci_port *isci_port,
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complete_all(&isci_port->hard_reset_complete);
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}
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-int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
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- struct isci_phy *iphy)
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+/* This method will return a true value if the specified phy can be assigned to
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+ * this port The following is a list of phys for each port that are allowed: -
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+ * Port 0 - 3 2 1 0 - Port 1 - 1 - Port 2 - 3 2 - Port 3 - 3 This method
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+ * doesn't preclude all configurations. It merely ensures that a phy is part
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+ * of the allowable set of phy identifiers for that port. For example, one
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+ * could assign phy 3 to port 0 and no other phys. Please refer to
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+ * scic_sds_port_is_phy_mask_valid() for information regarding whether the
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+ * phy_mask for a port can be supported. bool true if this is a valid phy
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+ * assignment for the port false if this is not a valid phy assignment for the
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+ * port
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+ */
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+bool scic_sds_port_is_valid_phy_assignment(struct scic_sds_port *sci_port,
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+ u32 phy_index)
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{
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- unsigned long flags;
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- enum sci_status status;
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- int ret = TMF_RESP_FUNC_COMPLETE;
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+ /* Initialize to invalid value. */
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+ u32 existing_phy_index = SCI_MAX_PHYS;
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+ u32 index;
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- dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
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- __func__, iport);
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+ if ((sci_port->physical_port_index == 1) && (phy_index != 1)) {
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+ return false;
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+ }
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- init_completion(&iport->hard_reset_complete);
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+ if (sci_port->physical_port_index == 3 && phy_index != 3) {
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+ return false;
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+ }
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- spin_lock_irqsave(&ihost->scic_lock, flags);
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+ if (
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+ (sci_port->physical_port_index == 2)
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+ && ((phy_index == 0) || (phy_index == 1))
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+ ) {
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+ return false;
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+ }
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- #define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
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- status = scic_port_hard_reset(&iport->sci, ISCI_PORT_RESET_TIMEOUT);
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+ for (index = 0; index < SCI_MAX_PHYS; index++) {
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+ if ((sci_port->phy_table[index] != NULL)
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+ && (index != phy_index)) {
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+ existing_phy_index = index;
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+ }
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+ }
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- spin_unlock_irqrestore(&ihost->scic_lock, flags);
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+ /*
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+ * Ensure that all of the phys in the port are capable of
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+ * operating at the same maximum link rate. */
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+ if (
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+ (existing_phy_index < SCI_MAX_PHYS)
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+ && (sci_port->owning_controller->user_parameters.sds1.phys[
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+ phy_index].max_speed_generation !=
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+ sci_port->owning_controller->user_parameters.sds1.phys[
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+ existing_phy_index].max_speed_generation)
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+ )
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+ return false;
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- if (status == SCI_SUCCESS) {
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- wait_for_completion(&iport->hard_reset_complete);
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+ return true;
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+}
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- dev_dbg(&ihost->pdev->dev,
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- "%s: iport = %p; hard reset completion\n",
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- __func__, iport);
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+/**
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+ *
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+ * @sci_port: This is the port object for which to determine if the phy mask
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+ * can be supported.
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+ *
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+ * This method will return a true value if the port's phy mask can be supported
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+ * by the SCU. The following is a list of valid PHY mask configurations for
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+ * each port: - Port 0 - [[3 2] 1] 0 - Port 1 - [1] - Port 2 - [[3] 2]
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+ * - Port 3 - [3] This method returns a boolean indication specifying if the
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+ * phy mask can be supported. true if this is a valid phy assignment for the
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+ * port false if this is not a valid phy assignment for the port
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+ */
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+static bool scic_sds_port_is_phy_mask_valid(
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+ struct scic_sds_port *sci_port,
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+ u32 phy_mask)
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+{
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+ if (sci_port->physical_port_index == 0) {
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+ if (((phy_mask & 0x0F) == 0x0F)
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+ || ((phy_mask & 0x03) == 0x03)
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+ || ((phy_mask & 0x01) == 0x01)
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+ || (phy_mask == 0))
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+ return true;
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+ } else if (sci_port->physical_port_index == 1) {
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+ if (((phy_mask & 0x02) == 0x02)
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+ || (phy_mask == 0))
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+ return true;
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+ } else if (sci_port->physical_port_index == 2) {
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+ if (((phy_mask & 0x0C) == 0x0C)
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+ || ((phy_mask & 0x04) == 0x04)
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+ || (phy_mask == 0))
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+ return true;
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+ } else if (sci_port->physical_port_index == 3) {
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+ if (((phy_mask & 0x08) == 0x08)
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+ || (phy_mask == 0))
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+ return true;
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+ }
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- if (iport->hard_reset_status != SCI_SUCCESS)
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- ret = TMF_RESP_FUNC_FAILED;
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- } else {
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- ret = TMF_RESP_FUNC_FAILED;
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+ return false;
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+}
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- dev_err(&ihost->pdev->dev,
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- "%s: iport = %p; scic_port_hard_reset call"
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- " failed 0x%x\n",
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- __func__, iport, status);
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+/**
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+ *
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+ * @sci_port: This parameter specifies the port from which to return a
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+ * connected phy.
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+ *
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+ * This method retrieves a currently active (i.e. connected) phy contained in
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+ * the port. Currently, the lowest order phy that is connected is returned.
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+ * This method returns a pointer to a SCIS_SDS_PHY object. NULL This value is
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+ * returned if there are no currently active (i.e. connected to a remote end
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+ * point) phys contained in the port. All other values specify a struct scic_sds_phy
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+ * object that is active in the port.
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+ */
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+static struct scic_sds_phy *scic_sds_port_get_a_connected_phy(
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+ struct scic_sds_port *sci_port
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+ ) {
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+ u32 index;
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+ struct scic_sds_phy *phy;
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+ for (index = 0; index < SCI_MAX_PHYS; index++) {
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+ /*
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+ * Ensure that the phy is both part of the port and currently
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+ * connected to the remote end-point. */
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+ phy = sci_port->phy_table[index];
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+ if (
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+ (phy != NULL)
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+ && scic_sds_port_active_phy(sci_port, phy)
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+ ) {
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+ return phy;
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+ }
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}
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- /* If the hard reset for the port has failed, consider this
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- * the same as link failures on all phys in the port.
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+ return NULL;
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+}
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|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_set_phy() -
|
|
|
+ * @out]: port The port object to which the phy assignement is being made.
|
|
|
+ * @out]: phy The phy which is being assigned to the port.
|
|
|
+ *
|
|
|
+ * This method attempts to make the assignment of the phy to the port. If
|
|
|
+ * successful the phy is assigned to the ports phy table. bool true if the phy
|
|
|
+ * assignment can be made. false if the phy assignement can not be made. This
|
|
|
+ * is a functional test that only fails if the phy is currently assigned to a
|
|
|
+ * different port.
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_set_phy(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ /*
|
|
|
+ * Check to see if we can add this phy to a port
|
|
|
+ * that means that the phy is not part of a port and that the port does
|
|
|
+ * not already have a phy assinged to the phy index. */
|
|
|
+ if (
|
|
|
+ (port->phy_table[phy->phy_index] == NULL)
|
|
|
+ && (scic_sds_phy_get_port(phy) == NULL)
|
|
|
+ && scic_sds_port_is_valid_phy_assignment(port, phy->phy_index)
|
|
|
+ ) {
|
|
|
+ /*
|
|
|
+ * Phy is being added in the stopped state so we are in MPC mode
|
|
|
+ * make logical port index = physical port index */
|
|
|
+ port->logical_port_index = port->physical_port_index;
|
|
|
+ port->phy_table[phy->phy_index] = phy;
|
|
|
+ scic_sds_phy_set_port(phy, port);
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+ }
|
|
|
+
|
|
|
+ return SCI_FAILURE;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_clear_phy() -
|
|
|
+ * @out]: port The port from which the phy is being cleared.
|
|
|
+ * @out]: phy The phy being cleared from the port.
|
|
|
+ *
|
|
|
+ * This method will clear the phy assigned to this port. This method fails if
|
|
|
+ * this phy is not currently assinged to this port. bool true if the phy is
|
|
|
+ * removed from the port. false if this phy is not assined to this port.
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_clear_phy(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ /* Make sure that this phy is part of this port */
|
|
|
+ if (port->phy_table[phy->phy_index] == phy &&
|
|
|
+ scic_sds_phy_get_port(phy) == port) {
|
|
|
+ struct scic_sds_controller *scic = port->owning_controller;
|
|
|
+ struct isci_host *ihost = scic_to_ihost(scic);
|
|
|
+
|
|
|
+ /* Yep it is assigned to this port so remove it */
|
|
|
+ scic_sds_phy_set_port(phy, &ihost->ports[SCI_MAX_PORTS].sci);
|
|
|
+ port->phy_table[phy->phy_index] = NULL;
|
|
|
+ return SCI_SUCCESS;
|
|
|
+ }
|
|
|
+
|
|
|
+ return SCI_FAILURE;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_add_phy() -
|
|
|
+ * @sci_port: This parameter specifies the port in which the phy will be added.
|
|
|
+ * @sci_phy: This parameter is the phy which is to be added to the port.
|
|
|
+ *
|
|
|
+ * This method will add a PHY to the selected port. This method returns an
|
|
|
+ * enum sci_status. SCI_SUCCESS the phy has been added to the port. Any other status
|
|
|
+ * is failre to add the phy to the port.
|
|
|
+ */
|
|
|
+enum sci_status scic_sds_port_add_phy(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ return sci_port->state_handlers->add_phy_handler(
|
|
|
+ sci_port, sci_phy);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_remove_phy() -
|
|
|
+ * @sci_port: This parameter specifies the port in which the phy will be added.
|
|
|
+ * @sci_phy: This parameter is the phy which is to be added to the port.
|
|
|
+ *
|
|
|
+ * This method will remove the PHY from the selected PORT. This method returns
|
|
|
+ * an enum sci_status. SCI_SUCCESS the phy has been removed from the port. Any other
|
|
|
+ * status is failre to add the phy to the port.
|
|
|
+ */
|
|
|
+enum sci_status scic_sds_port_remove_phy(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ return sci_port->state_handlers->remove_phy_handler(
|
|
|
+ sci_port, sci_phy);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method requests the SAS address for the supplied SAS port from the SCI
|
|
|
+ * implementation.
|
|
|
+ * @sci_port: a handle corresponding to the SAS port for which to return the
|
|
|
+ * SAS address.
|
|
|
+ * @sas_address: This parameter specifies a pointer to a SAS address structure
|
|
|
+ * into which the core will copy the SAS address for the port.
|
|
|
+ *
|
|
|
+ */
|
|
|
+void scic_sds_port_get_sas_address(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct sci_sas_address *sas_address)
|
|
|
+{
|
|
|
+ u32 index;
|
|
|
+
|
|
|
+ sas_address->high = 0;
|
|
|
+ sas_address->low = 0;
|
|
|
+
|
|
|
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
|
|
|
+ if (sci_port->phy_table[index] != NULL) {
|
|
|
+ scic_sds_phy_get_sas_address(sci_port->phy_table[index], sas_address);
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This function requests the SAS address for the device directly attached to
|
|
|
+ * this SAS port.
|
|
|
+ * @sci_port: a handle corresponding to the SAS port for which to return the
|
|
|
+ * SAS address.
|
|
|
+ * @sas_address: This parameter specifies a pointer to a SAS address structure
|
|
|
+ * into which the core will copy the SAS address for the device directly
|
|
|
+ * attached to the port.
|
|
|
+ *
|
|
|
+ */
|
|
|
+void scic_sds_port_get_attached_sas_address(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct sci_sas_address *sas_address)
|
|
|
+{
|
|
|
+ struct scic_sds_phy *sci_phy;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Ensure that the phy is both part of the port and currently
|
|
|
+ * connected to the remote end-point.
|
|
|
*/
|
|
|
- if (ret != TMF_RESP_FUNC_COMPLETE) {
|
|
|
- dev_err(&ihost->pdev->dev,
|
|
|
- "%s: iport = %p; hard reset failed "
|
|
|
- "(0x%x) - sending link down to libsas for phy %p\n",
|
|
|
- __func__, iport, iport->hard_reset_status, iphy);
|
|
|
+ sci_phy = scic_sds_port_get_a_connected_phy(sci_port);
|
|
|
+ if (sci_phy) {
|
|
|
+ if (sci_phy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA) {
|
|
|
+ scic_sds_phy_get_attached_sas_address(sci_phy,
|
|
|
+ sas_address);
|
|
|
+ } else {
|
|
|
+ scic_sds_phy_get_sas_address(sci_phy, sas_address);
|
|
|
+ sas_address->low += sci_phy->phy_index;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ sas_address->high = 0;
|
|
|
+ sas_address->low = 0;
|
|
|
+ }
|
|
|
+}
|
|
|
|
|
|
- isci_port_link_down(ihost, iphy, iport);
|
|
|
+/**
|
|
|
+ * scic_sds_port_construct_dummy_rnc() - create dummy rnc for si workaround
|
|
|
+ *
|
|
|
+ * @sci_port: logical port on which we need to create the remote node context
|
|
|
+ * @rni: remote node index for this remote node context.
|
|
|
+ *
|
|
|
+ * This routine will construct a dummy remote node context data structure
|
|
|
+ * This structure will be posted to the hardware to work around a scheduler
|
|
|
+ * error in the hardware.
|
|
|
+ */
|
|
|
+static void scic_sds_port_construct_dummy_rnc(struct scic_sds_port *sci_port, u16 rni)
|
|
|
+{
|
|
|
+ union scu_remote_node_context *rnc;
|
|
|
+
|
|
|
+ rnc = &sci_port->owning_controller->remote_node_context_table[rni];
|
|
|
+
|
|
|
+ memset(rnc, 0, sizeof(union scu_remote_node_context));
|
|
|
+
|
|
|
+ rnc->ssp.remote_sas_address_hi = 0;
|
|
|
+ rnc->ssp.remote_sas_address_lo = 0;
|
|
|
+
|
|
|
+ rnc->ssp.remote_node_index = rni;
|
|
|
+ rnc->ssp.remote_node_port_width = 1;
|
|
|
+ rnc->ssp.logical_port_index = sci_port->physical_port_index;
|
|
|
+
|
|
|
+ rnc->ssp.nexus_loss_timer_enable = false;
|
|
|
+ rnc->ssp.check_bit = false;
|
|
|
+ rnc->ssp.is_valid = true;
|
|
|
+ rnc->ssp.is_remote_node_context = true;
|
|
|
+ rnc->ssp.function_number = 0;
|
|
|
+ rnc->ssp.arbitration_wait_time = 0;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_construct_dummy_task() - create dummy task for si workaround
|
|
|
+ * @sci_port The logical port on which we need to create the
|
|
|
+ * remote node context.
|
|
|
+ * context.
|
|
|
+ * @tci The remote node index for this remote node context.
|
|
|
+ *
|
|
|
+ * This routine will construct a dummy task context data structure. This
|
|
|
+ * structure will be posted to the hardwre to work around a scheduler error
|
|
|
+ * in the hardware.
|
|
|
+ *
|
|
|
+ */
|
|
|
+static void scic_sds_port_construct_dummy_task(struct scic_sds_port *sci_port, u16 tci)
|
|
|
+{
|
|
|
+ struct scu_task_context *task_context;
|
|
|
+
|
|
|
+ task_context = scic_sds_controller_get_task_context_buffer(sci_port->owning_controller, tci);
|
|
|
+
|
|
|
+ memset(task_context, 0, sizeof(struct scu_task_context));
|
|
|
+
|
|
|
+ task_context->abort = 0;
|
|
|
+ task_context->priority = 0;
|
|
|
+ task_context->initiator_request = 1;
|
|
|
+ task_context->connection_rate = 1;
|
|
|
+ task_context->protocol_engine_index = 0;
|
|
|
+ task_context->logical_port_index = sci_port->physical_port_index;
|
|
|
+ task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
|
|
|
+ task_context->task_index = scic_sds_io_tag_get_index(tci);
|
|
|
+ task_context->valid = SCU_TASK_CONTEXT_VALID;
|
|
|
+ task_context->context_type = SCU_TASK_CONTEXT_TYPE;
|
|
|
+
|
|
|
+ task_context->remote_node_index = sci_port->reserved_rni;
|
|
|
+ task_context->command_code = 0;
|
|
|
+
|
|
|
+ task_context->link_layer_control = 0;
|
|
|
+ task_context->do_not_dma_ssp_good_response = 1;
|
|
|
+ task_context->strict_ordering = 0;
|
|
|
+ task_context->control_frame = 0;
|
|
|
+ task_context->timeout_enable = 0;
|
|
|
+ task_context->block_guard_enable = 0;
|
|
|
+
|
|
|
+ task_context->address_modifier = 0;
|
|
|
+
|
|
|
+ task_context->task_phase = 0x01;
|
|
|
+}
|
|
|
+
|
|
|
+static void scic_sds_port_destroy_dummy_resources(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+
|
|
|
+ if (sci_port->reserved_tci != SCU_DUMMY_INDEX)
|
|
|
+ scic_controller_free_io_tag(scic, sci_port->reserved_tci);
|
|
|
+
|
|
|
+ if (sci_port->reserved_rni != SCU_DUMMY_INDEX)
|
|
|
+ scic_sds_remote_node_table_release_remote_node_index(&scic->available_remote_nodes,
|
|
|
+ 1, sci_port->reserved_rni);
|
|
|
+
|
|
|
+ sci_port->reserved_rni = SCU_DUMMY_INDEX;
|
|
|
+ sci_port->reserved_tci = SCU_DUMMY_INDEX;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method performs initialization of the supplied port. Initialization
|
|
|
+ * includes: - state machine initialization - member variable initialization
|
|
|
+ * - configuring the phy_mask
|
|
|
+ * @sci_port:
|
|
|
+ * @transport_layer_registers:
|
|
|
+ * @port_task_scheduler_registers:
|
|
|
+ * @port_configuration_regsiter:
|
|
|
+ *
|
|
|
+ * enum sci_status SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION This value is returned
|
|
|
+ * if the phy being added to the port
|
|
|
+ */
|
|
|
+enum sci_status scic_sds_port_initialize(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ void __iomem *port_task_scheduler_registers,
|
|
|
+ void __iomem *port_configuration_regsiter,
|
|
|
+ void __iomem *viit_registers)
|
|
|
+{
|
|
|
+ sci_port->port_task_scheduler_registers = port_task_scheduler_registers;
|
|
|
+ sci_port->port_pe_configuration_register = port_configuration_regsiter;
|
|
|
+ sci_port->viit_registers = viit_registers;
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_port_hard_reset() - perform port hard reset
|
|
|
+ * @port: a handle corresponding to the SAS port to be hard reset.
|
|
|
+ * @reset_timeout: This parameter specifies the number of milliseconds in which
|
|
|
+ * the port reset operation should complete.
|
|
|
+ *
|
|
|
+ * The SCI User callback in scic_user_callbacks_t will only be called once for
|
|
|
+ * each phy in the SAS Port at completion of the hard reset sequence. Return a
|
|
|
+ * status indicating whether the hard reset started successfully. SCI_SUCCESS
|
|
|
+ * This value is returned if the hard reset operation started successfully.
|
|
|
+ */
|
|
|
+static enum sci_status scic_port_hard_reset(struct scic_sds_port *port,
|
|
|
+ u32 reset_timeout)
|
|
|
+{
|
|
|
+ return port->state_handlers->reset_handler(
|
|
|
+ port, reset_timeout);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method assigns the direct attached device ID for this port.
|
|
|
+ *
|
|
|
+ * @param[in] sci_port The port for which the direct attached device id is to
|
|
|
+ * be assigned.
|
|
|
+ * @param[in] device_id The direct attached device ID to assign to the port.
|
|
|
+ * This will be the RNi for the device
|
|
|
+ */
|
|
|
+void scic_sds_port_setup_transports(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ u32 device_id)
|
|
|
+{
|
|
|
+ u8 index;
|
|
|
+
|
|
|
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
|
|
|
+ if (sci_port->active_phy_mask & (1 << index))
|
|
|
+ scic_sds_phy_setup_transport(sci_port->phy_table[index], device_id);
|
|
|
}
|
|
|
+}
|
|
|
|
|
|
- return ret;
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @sci_port: This is the port on which the phy should be enabled.
|
|
|
+ * @sci_phy: This is the specific phy which to enable.
|
|
|
+ * @do_notify_user: This parameter specifies whether to inform the user (via
|
|
|
+ * scic_cb_port_link_up()) as to the fact that a new phy as become ready.
|
|
|
+ *
|
|
|
+ * This function will activate the phy in the port.
|
|
|
+ * Activation includes: - adding
|
|
|
+ * the phy to the port - enabling the Protocol Engine in the silicon. -
|
|
|
+ * notifying the user that the link is up. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_activate_phy(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy,
|
|
|
+ bool do_notify_user)
|
|
|
+{
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ struct isci_host *ihost = scic_to_ihost(scic);
|
|
|
+
|
|
|
+ if (sci_phy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA)
|
|
|
+ scic_sds_phy_resume(sci_phy);
|
|
|
+
|
|
|
+ sci_port->active_phy_mask |= 1 << sci_phy->phy_index;
|
|
|
+
|
|
|
+ scic_sds_controller_clear_invalid_phy(scic, sci_phy);
|
|
|
+
|
|
|
+ if (do_notify_user == true)
|
|
|
+ isci_port_link_up(ihost, sci_port, sci_phy);
|
|
|
}
|
|
|
|
|
|
-void isci_port_stop_complete(struct scic_sds_controller *scic,
|
|
|
- struct scic_sds_port *sci_port,
|
|
|
- enum sci_status completion_status)
|
|
|
+void scic_sds_port_deactivate_phy(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy,
|
|
|
+ bool do_notify_user)
|
|
|
{
|
|
|
- dev_dbg(&scic_to_ihost(scic)->pdev->dev, "Port stop complete\n");
|
|
|
+ struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port);
|
|
|
+ struct isci_port *iport = sci_port_to_iport(sci_port);
|
|
|
+ struct isci_host *ihost = scic_to_ihost(scic);
|
|
|
+ struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
|
|
|
+
|
|
|
+ sci_port->active_phy_mask &= ~(1 << sci_phy->phy_index);
|
|
|
+
|
|
|
+ sci_phy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN;
|
|
|
+
|
|
|
+ /* Re-assign the phy back to the LP as if it were a narrow port */
|
|
|
+ writel(sci_phy->phy_index,
|
|
|
+ &sci_port->port_pe_configuration_register[sci_phy->phy_index]);
|
|
|
+
|
|
|
+ if (do_notify_user == true)
|
|
|
+ isci_port_link_down(ihost, iphy, iport);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @sci_port: This is the port on which the phy should be disabled.
|
|
|
+ * @sci_phy: This is the specific phy which to disabled.
|
|
|
+ *
|
|
|
+ * This function will disable the phy and report that the phy is not valid for
|
|
|
+ * this port object. None
|
|
|
+ */
|
|
|
+static void scic_sds_port_invalid_link_up(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Check to see if we have alreay reported this link as bad and if
|
|
|
+ * not go ahead and tell the SCI_USER that we have discovered an
|
|
|
+ * invalid link.
|
|
|
+ */
|
|
|
+ if ((scic->invalid_phy_mask & (1 << sci_phy->phy_index)) == 0) {
|
|
|
+ scic_sds_controller_set_invalid_phy(scic, sci_phy);
|
|
|
+ dev_warn(&scic_to_ihost(scic)->pdev->dev, "Invalid link up!\n");
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_general_link_up_handler - phy can be assigned to port?
|
|
|
+ * @sci_port: scic_sds_port object for which has a phy that has gone link up.
|
|
|
+ * @sci_phy: This is the struct scic_sds_phy object that has gone link up.
|
|
|
+ * @do_notify_user: This parameter specifies whether to inform the user (via
|
|
|
+ * scic_cb_port_link_up()) as to the fact that a new phy as become ready.
|
|
|
+ *
|
|
|
+ * Determine if this phy can be assigned to this
|
|
|
+ * port . If the phy is not a valid PHY for
|
|
|
+ * this port then the function will notify the user. A PHY can only be
|
|
|
+ * part of a port if it's attached SAS ADDRESS is the same as all other PHYs in
|
|
|
+ * the same port. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_general_link_up_handler(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy,
|
|
|
+ bool do_notify_user)
|
|
|
+{
|
|
|
+ struct sci_sas_address port_sas_address;
|
|
|
+ struct sci_sas_address phy_sas_address;
|
|
|
+
|
|
|
+ scic_sds_port_get_attached_sas_address(sci_port, &port_sas_address);
|
|
|
+ scic_sds_phy_get_attached_sas_address(sci_phy, &phy_sas_address);
|
|
|
+
|
|
|
+ /* If the SAS address of the new phy matches the SAS address of
|
|
|
+ * other phys in the port OR this is the first phy in the port,
|
|
|
+ * then activate the phy and allow it to be used for operations
|
|
|
+ * in this port.
|
|
|
+ */
|
|
|
+ if ((phy_sas_address.high == port_sas_address.high &&
|
|
|
+ phy_sas_address.low == port_sas_address.low) ||
|
|
|
+ sci_port->active_phy_mask == 0) {
|
|
|
+ struct sci_base_state_machine *sm = &sci_port->state_machine;
|
|
|
+
|
|
|
+ scic_sds_port_activate_phy(sci_port, sci_phy, do_notify_user);
|
|
|
+ if (sm->current_state_id == SCI_BASE_PORT_STATE_RESETTING)
|
|
|
+ sci_base_state_machine_change_state(sm, SCI_BASE_PORT_STATE_READY);
|
|
|
+ } else
|
|
|
+ scic_sds_port_invalid_link_up(sci_port, sci_phy);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method returns false if the port only has a single phy object assigned.
|
|
|
+ * If there are no phys or more than one phy then the method will return
|
|
|
+ * true.
|
|
|
+ * @sci_port: The port for which the wide port condition is to be checked.
|
|
|
+ *
|
|
|
+ * bool true Is returned if this is a wide ported port. false Is returned if
|
|
|
+ * this is a narrow port.
|
|
|
+ */
|
|
|
+static bool scic_sds_port_is_wide(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ u32 index;
|
|
|
+ u32 phy_count = 0;
|
|
|
+
|
|
|
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
|
|
|
+ if (sci_port->phy_table[index] != NULL) {
|
|
|
+ phy_count++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return phy_count != 1;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method is called by the PHY object when the link is detected. if the
|
|
|
+ * port wants the PHY to continue on to the link up state then the port
|
|
|
+ * layer must return true. If the port object returns false the phy object
|
|
|
+ * must halt its attempt to go link up.
|
|
|
+ * @sci_port: The port associated with the phy object.
|
|
|
+ * @sci_phy: The phy object that is trying to go link up.
|
|
|
+ *
|
|
|
+ * true if the phy object can continue to the link up condition. true Is
|
|
|
+ * returned if this phy can continue to the ready state. false Is returned if
|
|
|
+ * can not continue on to the ready state. This notification is in place for
|
|
|
+ * wide ports and direct attached phys. Since there are no wide ported SATA
|
|
|
+ * devices this could become an invalid port configuration.
|
|
|
+ */
|
|
|
+bool scic_sds_port_link_detected(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ if ((sci_port->logical_port_index != SCIC_SDS_DUMMY_PORT) &&
|
|
|
+ (sci_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) &&
|
|
|
+ scic_sds_port_is_wide(sci_port)) {
|
|
|
+ scic_sds_port_invalid_link_up(sci_port, sci_phy);
|
|
|
+
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ return true;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method is the entry point for the phy to inform the port that it is now
|
|
|
+ * in a ready state
|
|
|
+ * @sci_port:
|
|
|
+ *
|
|
|
+ *
|
|
|
+ */
|
|
|
+void scic_sds_port_link_up(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ sci_phy->is_in_link_training = false;
|
|
|
+
|
|
|
+ sci_port->state_handlers->link_up_handler(sci_port, sci_phy);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method is the entry point for the phy to inform the port that it is no
|
|
|
+ * longer in a ready state
|
|
|
+ * @sci_port:
|
|
|
+ *
|
|
|
+ *
|
|
|
+ */
|
|
|
+void scic_sds_port_link_down(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ sci_port->state_handlers->link_down_handler(sci_port, sci_phy);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method is called to start an IO request on this port.
|
|
|
+ * @sci_port:
|
|
|
+ * @sci_dev:
|
|
|
+ * @sci_req:
|
|
|
+ *
|
|
|
+ * enum sci_status
|
|
|
+ */
|
|
|
+enum sci_status scic_sds_port_start_io(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_remote_device *sci_dev,
|
|
|
+ struct scic_sds_request *sci_req)
|
|
|
+{
|
|
|
+ return sci_port->state_handlers->start_io_handler(
|
|
|
+ sci_port, sci_dev, sci_req);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method is called to complete an IO request to the port.
|
|
|
+ * @sci_port:
|
|
|
+ * @sci_dev:
|
|
|
+ * @sci_req:
|
|
|
+ *
|
|
|
+ * enum sci_status
|
|
|
+ */
|
|
|
+enum sci_status scic_sds_port_complete_io(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_remote_device *sci_dev,
|
|
|
+ struct scic_sds_request *sci_req)
|
|
|
+{
|
|
|
+ return sci_port->state_handlers->complete_io_handler(
|
|
|
+ sci_port, sci_dev, sci_req);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method is provided to timeout requests for port operations. Mostly its
|
|
|
+ * for the port reset operation.
|
|
|
+ *
|
|
|
+ *
|
|
|
+ */
|
|
|
+static void scic_sds_port_timeout_handler(void *port)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = port;
|
|
|
+ u32 current_state;
|
|
|
+
|
|
|
+ current_state = sci_base_state_machine_get_state(
|
|
|
+ &sci_port->state_machine);
|
|
|
+
|
|
|
+ if (current_state == SCI_BASE_PORT_STATE_RESETTING) {
|
|
|
+ /*
|
|
|
+ * if the port is still in the resetting state then the
|
|
|
+ * timeout fired before the reset completed.
|
|
|
+ */
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &sci_port->state_machine,
|
|
|
+ SCI_BASE_PORT_STATE_FAILED);
|
|
|
+ } else if (current_state == SCI_BASE_PORT_STATE_STOPPED) {
|
|
|
+ /*
|
|
|
+ * if the port is stopped then the start request failed
|
|
|
+ * In this case stay in the stopped state.
|
|
|
+ */
|
|
|
+ dev_err(sciport_to_dev(sci_port),
|
|
|
+ "%s: SCIC Port 0x%p failed to stop before tiemout.\n",
|
|
|
+ __func__,
|
|
|
+ sci_port);
|
|
|
+ } else if (current_state == SCI_BASE_PORT_STATE_STOPPING) {
|
|
|
+ /*
|
|
|
+ * if the port is still stopping then the stop has not
|
|
|
+ * completed
|
|
|
+ */
|
|
|
+ isci_port_stop_complete(
|
|
|
+ scic_sds_port_get_controller(sci_port),
|
|
|
+ sci_port,
|
|
|
+ SCI_FAILURE_TIMEOUT);
|
|
|
+ } else {
|
|
|
+ /*
|
|
|
+ * The port is in the ready state and we have a timer
|
|
|
+ * reporting a timeout this should not happen.
|
|
|
+ */
|
|
|
+ dev_err(sciport_to_dev(sci_port),
|
|
|
+ "%s: SCIC Port 0x%p is processing a timeout operation "
|
|
|
+ "in state %d.\n",
|
|
|
+ __func__,
|
|
|
+ sci_port,
|
|
|
+ current_state);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/* --------------------------------------------------------------------------- */
|
|
|
+
|
|
|
+/**
|
|
|
+ * This function updates the hardwares VIIT entry for this port.
|
|
|
+ *
|
|
|
+ *
|
|
|
+ */
|
|
|
+static void scic_sds_port_update_viit_entry(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ struct sci_sas_address sas_address;
|
|
|
+
|
|
|
+ scic_sds_port_get_sas_address(sci_port, &sas_address);
|
|
|
+
|
|
|
+ writel(sas_address.high,
|
|
|
+ &sci_port->viit_registers->initiator_sas_address_hi);
|
|
|
+ writel(sas_address.low,
|
|
|
+ &sci_port->viit_registers->initiator_sas_address_lo);
|
|
|
+
|
|
|
+ /* This value get cleared just in case its not already cleared */
|
|
|
+ writel(0, &sci_port->viit_registers->reserved);
|
|
|
+
|
|
|
+ /* We are required to update the status register last */
|
|
|
+ writel(SCU_VIIT_ENTRY_ID_VIIT |
|
|
|
+ SCU_VIIT_IPPT_INITIATOR |
|
|
|
+ ((1 << sci_port->physical_port_index) << SCU_VIIT_ENTRY_LPVIE_SHIFT) |
|
|
|
+ SCU_VIIT_STATUS_ALL_VALID,
|
|
|
+ &sci_port->viit_registers->status);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This method returns the maximum allowed speed for data transfers on this
|
|
|
+ * port. This maximum allowed speed evaluates to the maximum speed of the
|
|
|
+ * slowest phy in the port.
|
|
|
+ * @sci_port: This parameter specifies the port for which to retrieve the
|
|
|
+ * maximum allowed speed.
|
|
|
+ *
|
|
|
+ * This method returns the maximum negotiated speed of the slowest phy in the
|
|
|
+ * port.
|
|
|
+ */
|
|
|
+enum sas_linkrate scic_sds_port_get_max_allowed_speed(
|
|
|
+ struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ u16 index;
|
|
|
+ enum sas_linkrate max_allowed_speed = SAS_LINK_RATE_6_0_GBPS;
|
|
|
+ struct scic_sds_phy *phy = NULL;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Loop through all of the phys in this port and find the phy with the
|
|
|
+ * lowest maximum link rate. */
|
|
|
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
|
|
|
+ phy = sci_port->phy_table[index];
|
|
|
+ if (
|
|
|
+ (phy != NULL)
|
|
|
+ && (scic_sds_port_active_phy(sci_port, phy) == true)
|
|
|
+ && (phy->max_negotiated_speed < max_allowed_speed)
|
|
|
+ )
|
|
|
+ max_allowed_speed = phy->max_negotiated_speed;
|
|
|
+ }
|
|
|
+
|
|
|
+ return max_allowed_speed;
|
|
|
+}
|
|
|
+
|
|
|
+static void scic_port_enable_broadcast_change_notification(struct scic_sds_port *port)
|
|
|
+{
|
|
|
+ struct scic_sds_phy *phy;
|
|
|
+ u32 register_value;
|
|
|
+ u8 index;
|
|
|
+
|
|
|
+ /* Loop through all of the phys to enable BCN. */
|
|
|
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
|
|
|
+ phy = port->phy_table[index];
|
|
|
+ if (phy != NULL) {
|
|
|
+ register_value =
|
|
|
+ readl(&phy->link_layer_registers->link_layer_control);
|
|
|
+
|
|
|
+ /* clear the bit by writing 1. */
|
|
|
+ writel(register_value,
|
|
|
+ &phy->link_layer_registers->link_layer_control);
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * ****************************************************************************
|
|
|
+ * * READY SUBSTATE HANDLERS
|
|
|
+ * **************************************************************************** */
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method is the general ready state stop handler for the struct scic_sds_port
|
|
|
+ * object. This function will transition the ready substate machine to its
|
|
|
+ * final state. enum sci_status SCI_SUCCESS
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_ready_substate_stop_handler(
|
|
|
+ struct scic_sds_port *port)
|
|
|
+{
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &port->state_machine,
|
|
|
+ SCI_BASE_PORT_STATE_STOPPING
|
|
|
+ );
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method is the general ready substate complete io handler for the
|
|
|
+ * struct scic_sds_port object. This function decrments the outstanding request count
|
|
|
+ * for this port object. enum sci_status SCI_SUCCESS
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_ready_substate_complete_io_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_remote_device *device,
|
|
|
+ struct scic_sds_request *io_request)
|
|
|
+{
|
|
|
+ scic_sds_port_decrement_request_count(port);
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status scic_sds_port_ready_substate_add_phy_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ enum sci_status status;
|
|
|
+
|
|
|
+ status = scic_sds_port_set_phy(port, phy);
|
|
|
+
|
|
|
+ if (status == SCI_SUCCESS) {
|
|
|
+ scic_sds_port_general_link_up_handler(port, phy, true);
|
|
|
+
|
|
|
+ port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
|
|
|
+
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
|
|
|
+ );
|
|
|
+ }
|
|
|
+
|
|
|
+ return status;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static enum sci_status scic_sds_port_ready_substate_remove_phy_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ enum sci_status status;
|
|
|
+
|
|
|
+ status = scic_sds_port_clear_phy(port, phy);
|
|
|
+
|
|
|
+ if (status == SCI_SUCCESS) {
|
|
|
+ scic_sds_port_deactivate_phy(port, phy, true);
|
|
|
+
|
|
|
+ port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
|
|
|
+
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
|
|
|
+ );
|
|
|
+ }
|
|
|
+
|
|
|
+ return status;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * ****************************************************************************
|
|
|
+ * * READY SUBSTATE WAITING HANDLERS
|
|
|
+ * **************************************************************************** */
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @sci_port: This is the struct scic_sds_port object that which has a phy that has
|
|
|
+ * gone link up.
|
|
|
+ * @sci_phy: This is the struct scic_sds_phy object that has gone link up.
|
|
|
+ *
|
|
|
+ * This method is the ready waiting substate link up handler for the
|
|
|
+ * struct scic_sds_port object. This methos will report the link up condition for
|
|
|
+ * this port and will transition to the ready operational substate. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_ready_waiting_substate_link_up_handler(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ /*
|
|
|
+ * Since this is the first phy going link up for the port we can just enable
|
|
|
+ * it and continue. */
|
|
|
+ scic_sds_port_activate_phy(sci_port, sci_phy, true);
|
|
|
+
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &sci_port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
|
|
|
+ );
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method is the ready waiting substate start io handler for the
|
|
|
+ * struct scic_sds_port object. The port object can not accept new requests so the
|
|
|
+ * request is failed. enum sci_status SCI_FAILURE_INVALID_STATE
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_ready_waiting_substate_start_io_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_remote_device *device,
|
|
|
+ struct scic_sds_request *io_request)
|
|
|
+{
|
|
|
+ return SCI_FAILURE_INVALID_STATE;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * ****************************************************************************
|
|
|
+ * * READY SUBSTATE OPERATIONAL HANDLERS
|
|
|
+ * **************************************************************************** */
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method will casue the port to reset. enum sci_status SCI_SUCCESS
|
|
|
+ */
|
|
|
+static enum
|
|
|
+sci_status scic_sds_port_ready_operational_substate_reset_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ u32 timeout)
|
|
|
+{
|
|
|
+ enum sci_status status = SCI_FAILURE_INVALID_PHY;
|
|
|
+ u32 phy_index;
|
|
|
+ struct scic_sds_phy *selected_phy = NULL;
|
|
|
+
|
|
|
+
|
|
|
+ /* Select a phy on which we can send the hard reset request. */
|
|
|
+ for (phy_index = 0;
|
|
|
+ (phy_index < SCI_MAX_PHYS) && (selected_phy == NULL);
|
|
|
+ phy_index++) {
|
|
|
+ selected_phy = port->phy_table[phy_index];
|
|
|
+
|
|
|
+ if ((selected_phy != NULL) &&
|
|
|
+ !scic_sds_port_active_phy(port, selected_phy)) {
|
|
|
+ /*
|
|
|
+ * We found a phy but it is not ready select
|
|
|
+ * different phy
|
|
|
+ */
|
|
|
+ selected_phy = NULL;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* If we have a phy then go ahead and start the reset procedure */
|
|
|
+ if (selected_phy != NULL) {
|
|
|
+ status = scic_sds_phy_reset(selected_phy);
|
|
|
+
|
|
|
+ if (status == SCI_SUCCESS) {
|
|
|
+ isci_timer_start(port->timer_handle, timeout);
|
|
|
+ port->not_ready_reason =
|
|
|
+ SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED;
|
|
|
+
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &port->state_machine,
|
|
|
+ SCI_BASE_PORT_STATE_RESETTING);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return status;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_ready_operational_substate_link_up_handler() -
|
|
|
+ * @sci_port: This is the struct scic_sds_port object that which has a phy that has
|
|
|
+ * gone link up.
|
|
|
+ * @sci_phy: This is the struct scic_sds_phy object that has gone link up.
|
|
|
+ *
|
|
|
+ * This method is the ready operational substate link up handler for the
|
|
|
+ * struct scic_sds_port object. This function notifies the SCI User that the phy has
|
|
|
+ * gone link up. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_ready_operational_substate_link_up_handler(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ scic_sds_port_general_link_up_handler(sci_port, sci_phy, true);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_ready_operational_substate_link_down_handler() -
|
|
|
+ * @sci_port: This is the struct scic_sds_port object that which has a phy that has
|
|
|
+ * gone link down.
|
|
|
+ * @sci_phy: This is the struct scic_sds_phy object that has gone link down.
|
|
|
+ *
|
|
|
+ * This method is the ready operational substate link down handler for the
|
|
|
+ * struct scic_sds_port object. This function notifies the SCI User that the phy has
|
|
|
+ * gone link down and if this is the last phy in the port the port will change
|
|
|
+ * state to the ready waiting substate. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_ready_operational_substate_link_down_handler(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ scic_sds_port_deactivate_phy(sci_port, sci_phy, true);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * If there are no active phys left in the port, then transition
|
|
|
+ * the port to the WAITING state until such time as a phy goes
|
|
|
+ * link up. */
|
|
|
+ if (sci_port->active_phy_mask == 0)
|
|
|
+ sci_base_state_machine_change_state(&sci_port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_WAITING);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method is the ready operational substate start io handler for the
|
|
|
+ * struct scic_sds_port object. This function incremetns the outstanding request
|
|
|
+ * count for this port object. enum sci_status SCI_SUCCESS
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_ready_operational_substate_start_io_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_remote_device *device,
|
|
|
+ struct scic_sds_request *io_request)
|
|
|
+{
|
|
|
+ port->started_request_count++;
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * ****************************************************************************
|
|
|
+ * * READY SUBSTATE OPERATIONAL HANDLERS
|
|
|
+ * **************************************************************************** */
|
|
|
+
|
|
|
+/*
|
|
|
+ * This is the default method for a port add phy request. It will report a
|
|
|
+ * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_ready_configuring_substate_add_phy_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ enum sci_status status;
|
|
|
+
|
|
|
+ status = scic_sds_port_set_phy(port, phy);
|
|
|
+
|
|
|
+ if (status == SCI_SUCCESS) {
|
|
|
+ scic_sds_port_general_link_up_handler(port, phy, true);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Re-enter the configuring state since this may be the last phy in
|
|
|
+ * the port. */
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
|
|
|
+ );
|
|
|
+ }
|
|
|
+
|
|
|
+ return status;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This is the default method for a port remove phy request. It will report a
|
|
|
+ * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_ready_configuring_substate_remove_phy_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ enum sci_status status;
|
|
|
+
|
|
|
+ status = scic_sds_port_clear_phy(port, phy);
|
|
|
+
|
|
|
+ if (status == SCI_SUCCESS) {
|
|
|
+ scic_sds_port_deactivate_phy(port, phy, true);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Re-enter the configuring state since this may be the last phy in
|
|
|
+ * the port. */
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING
|
|
|
+ );
|
|
|
+ }
|
|
|
+
|
|
|
+ return status;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_ready_configuring_substate_complete_io_handler() -
|
|
|
+ * @port: This is the port that is being requested to complete the io request.
|
|
|
+ * @device: This is the device on which the io is completing.
|
|
|
+ *
|
|
|
+ * This method will decrement the outstanding request count for this port. If
|
|
|
+ * the request count goes to 0 then the port can be reprogrammed with its new
|
|
|
+ * phy data.
|
|
|
+ */
|
|
|
+static enum sci_status
|
|
|
+scic_sds_port_ready_configuring_substate_complete_io_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_remote_device *device,
|
|
|
+ struct scic_sds_request *io_request)
|
|
|
+{
|
|
|
+ scic_sds_port_decrement_request_count(port);
|
|
|
+
|
|
|
+ if (port->started_request_count == 0) {
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
|
|
|
+ );
|
|
|
+ }
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status default_port_handler(struct scic_sds_port *sci_port,
|
|
|
+ const char *func)
|
|
|
+{
|
|
|
+ dev_warn(sciport_to_dev(sci_port),
|
|
|
+ "%s: in wrong state: %d\n", func,
|
|
|
+ sci_base_state_machine_get_state(&sci_port->state_machine));
|
|
|
+ return SCI_FAILURE_INVALID_STATE;
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status
|
|
|
+scic_sds_port_default_start_handler(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ return default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status
|
|
|
+scic_sds_port_default_stop_handler(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ return default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status
|
|
|
+scic_sds_port_default_destruct_handler(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ return default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status
|
|
|
+scic_sds_port_default_reset_handler(struct scic_sds_port *sci_port,
|
|
|
+ u32 timeout)
|
|
|
+{
|
|
|
+ return default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status
|
|
|
+scic_sds_port_default_add_phy_handler(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *base_phy)
|
|
|
+{
|
|
|
+ return default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status
|
|
|
+scic_sds_port_default_remove_phy_handler(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *base_phy)
|
|
|
+{
|
|
|
+ return default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This is the default method for a port unsolicited frame request. It will
|
|
|
+ * report a warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE Is it even
|
|
|
+ * possible to receive an unsolicited frame directed to a port object? It
|
|
|
+ * seems possible if we implementing virtual functions but until then?
|
|
|
+ */
|
|
|
+static enum sci_status
|
|
|
+scic_sds_port_default_frame_handler(struct scic_sds_port *sci_port,
|
|
|
+ u32 frame_index)
|
|
|
+{
|
|
|
+ struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port);
|
|
|
+
|
|
|
+ default_port_handler(sci_port, __func__);
|
|
|
+ scic_sds_controller_release_frame(scic, frame_index);
|
|
|
+
|
|
|
+ return SCI_FAILURE_INVALID_STATE;
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status scic_sds_port_default_event_handler(struct scic_sds_port *sci_port,
|
|
|
+ u32 event_code)
|
|
|
+{
|
|
|
+ return default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+static void scic_sds_port_default_link_up_handler(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+static void scic_sds_port_default_link_down_handler(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status scic_sds_port_default_start_io_handler(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_remote_device *sci_dev,
|
|
|
+ struct scic_sds_request *sci_req)
|
|
|
+{
|
|
|
+ return default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+static enum sci_status scic_sds_port_default_complete_io_handler(struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_remote_device *sci_dev,
|
|
|
+ struct scic_sds_request *sci_req)
|
|
|
+{
|
|
|
+ return default_port_handler(sci_port, __func__);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+static struct scic_sds_port_state_handler
|
|
|
+scic_sds_port_ready_substate_handler_table[SCIC_SDS_PORT_READY_MAX_SUBSTATES] = {
|
|
|
+ {
|
|
|
+ /* SCIC_SDS_PORT_READY_SUBSTATE_WAITING */
|
|
|
+ scic_sds_port_default_start_handler,
|
|
|
+ scic_sds_port_ready_substate_stop_handler,
|
|
|
+ scic_sds_port_default_destruct_handler,
|
|
|
+ scic_sds_port_default_reset_handler,
|
|
|
+ scic_sds_port_ready_substate_add_phy_handler,
|
|
|
+ scic_sds_port_default_remove_phy_handler,
|
|
|
+ scic_sds_port_default_frame_handler,
|
|
|
+ scic_sds_port_default_event_handler,
|
|
|
+ scic_sds_port_ready_waiting_substate_link_up_handler,
|
|
|
+ scic_sds_port_default_link_down_handler,
|
|
|
+ scic_sds_port_ready_waiting_substate_start_io_handler,
|
|
|
+ scic_sds_port_ready_substate_complete_io_handler,
|
|
|
+ },
|
|
|
+
|
|
|
+ {
|
|
|
+ /* SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL */
|
|
|
+ scic_sds_port_default_start_handler,
|
|
|
+ scic_sds_port_ready_substate_stop_handler,
|
|
|
+ scic_sds_port_default_destruct_handler,
|
|
|
+ scic_sds_port_ready_operational_substate_reset_handler,
|
|
|
+ scic_sds_port_ready_substate_add_phy_handler,
|
|
|
+ scic_sds_port_ready_substate_remove_phy_handler,
|
|
|
+ scic_sds_port_default_frame_handler,
|
|
|
+ scic_sds_port_default_event_handler,
|
|
|
+ scic_sds_port_ready_operational_substate_link_up_handler,
|
|
|
+ scic_sds_port_ready_operational_substate_link_down_handler,
|
|
|
+ scic_sds_port_ready_operational_substate_start_io_handler,
|
|
|
+ scic_sds_port_ready_substate_complete_io_handler,
|
|
|
+ },
|
|
|
+
|
|
|
+ {
|
|
|
+ /* SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING */
|
|
|
+ scic_sds_port_default_start_handler,
|
|
|
+ scic_sds_port_ready_substate_stop_handler,
|
|
|
+ scic_sds_port_default_destruct_handler,
|
|
|
+ scic_sds_port_default_reset_handler,
|
|
|
+ scic_sds_port_ready_configuring_substate_add_phy_handler,
|
|
|
+ scic_sds_port_ready_configuring_substate_remove_phy_handler,
|
|
|
+ scic_sds_port_default_frame_handler,
|
|
|
+ scic_sds_port_default_event_handler,
|
|
|
+ scic_sds_port_default_link_up_handler,
|
|
|
+ scic_sds_port_default_link_down_handler,
|
|
|
+ scic_sds_port_default_start_io_handler,
|
|
|
+ scic_sds_port_ready_configuring_substate_complete_io_handler
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_set_ready_state_handlers() -
|
|
|
+ *
|
|
|
+ * This macro sets the port ready substate handlers.
|
|
|
+ */
|
|
|
+#define scic_sds_port_set_ready_state_handlers(port, state_id) \
|
|
|
+ scic_sds_port_set_state_handlers(\
|
|
|
+ port, &scic_sds_port_ready_substate_handler_table[(state_id)] \
|
|
|
+ )
|
|
|
+
|
|
|
+/*
|
|
|
+ * ******************************************************************************
|
|
|
+ * * PORT STATE PRIVATE METHODS
|
|
|
+ * ****************************************************************************** */
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @sci_port: This is the struct scic_sds_port object to suspend.
|
|
|
+ *
|
|
|
+ * This method will susped the port task scheduler for this port object. none
|
|
|
+ */
|
|
|
+static void
|
|
|
+scic_sds_port_suspend_port_task_scheduler(struct scic_sds_port *port)
|
|
|
+{
|
|
|
+ u32 pts_control_value;
|
|
|
+
|
|
|
+ pts_control_value = readl(&port->port_task_scheduler_registers->control);
|
|
|
+ pts_control_value |= SCU_PTSxCR_GEN_BIT(SUSPEND);
|
|
|
+ writel(pts_control_value, &port->port_task_scheduler_registers->control);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_post_dummy_request() - post dummy/workaround request
|
|
|
+ * @sci_port: port to post task
|
|
|
+ *
|
|
|
+ * Prevent the hardware scheduler from posting new requests to the front
|
|
|
+ * of the scheduler queue causing a starvation problem for currently
|
|
|
+ * ongoing requests.
|
|
|
+ *
|
|
|
+ */
|
|
|
+static void scic_sds_port_post_dummy_request(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ u32 command;
|
|
|
+ struct scu_task_context *task_context;
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ u16 tci = sci_port->reserved_tci;
|
|
|
+
|
|
|
+ task_context = scic_sds_controller_get_task_context_buffer(scic, tci);
|
|
|
+
|
|
|
+ task_context->abort = 0;
|
|
|
+
|
|
|
+ command = SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
|
|
|
+ sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
|
|
|
+ tci;
|
|
|
+
|
|
|
+ scic_sds_controller_post_request(scic, command);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This routine will abort the dummy request. This will alow the hardware to
|
|
|
+ * power down parts of the silicon to save power.
|
|
|
+ *
|
|
|
+ * @sci_port: The port on which the task must be aborted.
|
|
|
+ *
|
|
|
+ */
|
|
|
+static void scic_sds_port_abort_dummy_request(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ u16 tci = sci_port->reserved_tci;
|
|
|
+ struct scu_task_context *tc;
|
|
|
+ u32 command;
|
|
|
+
|
|
|
+ tc = scic_sds_controller_get_task_context_buffer(scic, tci);
|
|
|
+
|
|
|
+ tc->abort = 1;
|
|
|
+
|
|
|
+ command = SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT |
|
|
|
+ sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
|
|
|
+ tci;
|
|
|
+
|
|
|
+ scic_sds_controller_post_request(scic, command);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @sci_port: This is the struct scic_sds_port object to resume.
|
|
|
+ *
|
|
|
+ * This method will resume the port task scheduler for this port object. none
|
|
|
+ */
|
|
|
+static void
|
|
|
+scic_sds_port_resume_port_task_scheduler(struct scic_sds_port *port)
|
|
|
+{
|
|
|
+ u32 pts_control_value;
|
|
|
+
|
|
|
+ pts_control_value = readl(&port->port_task_scheduler_registers->control);
|
|
|
+ pts_control_value &= ~SCU_PTSxCR_GEN_BIT(SUSPEND);
|
|
|
+ writel(pts_control_value, &port->port_task_scheduler_registers->control);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * ******************************************************************************
|
|
|
+ * * PORT READY SUBSTATE METHODS
|
|
|
+ * ****************************************************************************** */
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This method will perform the actions required by the struct scic_sds_port on
|
|
|
+ * entering the SCIC_SDS_PORT_READY_SUBSTATE_WAITING. This function checks the
|
|
|
+ * port for any ready phys. If there is at least one phy in a ready state then
|
|
|
+ * the port transitions to the ready operational substate. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_ready_substate_waiting_enter(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+
|
|
|
+ scic_sds_port_set_ready_state_handlers(
|
|
|
+ sci_port, SCIC_SDS_PORT_READY_SUBSTATE_WAITING
|
|
|
+ );
|
|
|
+
|
|
|
+ scic_sds_port_suspend_port_task_scheduler(sci_port);
|
|
|
+
|
|
|
+ sci_port->not_ready_reason = SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS;
|
|
|
+
|
|
|
+ if (sci_port->active_phy_mask != 0) {
|
|
|
+ /* At least one of the phys on the port is ready */
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &sci_port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL
|
|
|
+ );
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This function will perform the actions required by the struct scic_sds_port
|
|
|
+ * on entering the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function sets
|
|
|
+ * the state handlers for the port object, notifies the SCI User that the port
|
|
|
+ * is ready, and resumes port operations. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_ready_substate_operational_enter(void *object)
|
|
|
+{
|
|
|
+ u32 index;
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ struct isci_host *ihost = scic_to_ihost(scic);
|
|
|
+ struct isci_port *iport = sci_port_to_iport(sci_port);
|
|
|
+
|
|
|
+ scic_sds_port_set_ready_state_handlers(
|
|
|
+ sci_port,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL);
|
|
|
+
|
|
|
+ isci_port_ready(ihost, iport);
|
|
|
+
|
|
|
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
|
|
|
+ if (sci_port->phy_table[index]) {
|
|
|
+ writel(sci_port->physical_port_index,
|
|
|
+ &sci_port->port_pe_configuration_register[
|
|
|
+ sci_port->phy_table[index]->phy_index]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ scic_sds_port_update_viit_entry(sci_port);
|
|
|
+
|
|
|
+ scic_sds_port_resume_port_task_scheduler(sci_port);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Post the dummy task for the port so the hardware can schedule
|
|
|
+ * io correctly
|
|
|
+ */
|
|
|
+ scic_sds_port_post_dummy_request(sci_port);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This method will perform the actions required by the struct scic_sds_port on
|
|
|
+ * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports
|
|
|
+ * the port not ready and suspends the port task scheduler. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_ready_substate_operational_exit(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ struct isci_host *ihost = scic_to_ihost(scic);
|
|
|
+ struct isci_port *iport = sci_port_to_iport(sci_port);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Kill the dummy task for this port if it has not yet posted
|
|
|
+ * the hardware will treat this as a NOP and just return abort
|
|
|
+ * complete.
|
|
|
+ */
|
|
|
+ scic_sds_port_abort_dummy_request(sci_port);
|
|
|
+
|
|
|
+ isci_port_not_ready(ihost, iport);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * ******************************************************************************
|
|
|
+ * * PORT READY CONFIGURING METHODS
|
|
|
+ * ****************************************************************************** */
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_ready_substate_configuring_enter() -
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This method will perform the actions required by the struct scic_sds_port on
|
|
|
+ * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports
|
|
|
+ * the port not ready and suspends the port task scheduler. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_ready_substate_configuring_enter(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ struct isci_host *ihost = scic_to_ihost(scic);
|
|
|
+ struct isci_port *iport = sci_port_to_iport(sci_port);
|
|
|
+
|
|
|
+ scic_sds_port_set_ready_state_handlers(
|
|
|
+ sci_port,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING);
|
|
|
+
|
|
|
+ if (sci_port->active_phy_mask == 0) {
|
|
|
+ isci_port_not_ready(ihost, iport);
|
|
|
+
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &sci_port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_WAITING);
|
|
|
+ } else if (sci_port->started_request_count == 0)
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &sci_port->ready_substate_machine,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL);
|
|
|
+}
|
|
|
+
|
|
|
+static void scic_sds_port_ready_substate_configuring_exit(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+
|
|
|
+ scic_sds_port_suspend_port_task_scheduler(sci_port);
|
|
|
+}
|
|
|
+
|
|
|
+/* --------------------------------------------------------------------------- */
|
|
|
+
|
|
|
+static const struct sci_base_state scic_sds_port_ready_substate_table[] = {
|
|
|
+ [SCIC_SDS_PORT_READY_SUBSTATE_WAITING] = {
|
|
|
+ .enter_state = scic_sds_port_ready_substate_waiting_enter,
|
|
|
+ },
|
|
|
+ [SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL] = {
|
|
|
+ .enter_state = scic_sds_port_ready_substate_operational_enter,
|
|
|
+ .exit_state = scic_sds_port_ready_substate_operational_exit
|
|
|
+ },
|
|
|
+ [SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING] = {
|
|
|
+ .enter_state = scic_sds_port_ready_substate_configuring_enter,
|
|
|
+ .exit_state = scic_sds_port_ready_substate_configuring_exit
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @port: This is the struct scic_sds_port object on which the io request count will
|
|
|
+ * be decremented.
|
|
|
+ * @device: This is the struct scic_sds_remote_device object to which the io request
|
|
|
+ * is being directed. This parameter is not required to complete this
|
|
|
+ * operation.
|
|
|
+ * @io_request: This is the request that is being completed on this port
|
|
|
+ * object. This parameter is not required to complete this operation.
|
|
|
+ *
|
|
|
+ * This is a general complete io request handler for the struct scic_sds_port object.
|
|
|
+ * enum sci_status SCI_SUCCESS
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_general_complete_io_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_remote_device *device,
|
|
|
+ struct scic_sds_request *io_request)
|
|
|
+{
|
|
|
+ scic_sds_port_decrement_request_count(port);
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_stopped_state_start_handler() - stop a port from "started"
|
|
|
+ *
|
|
|
+ * @port: This is the struct scic_sds_port object which is cast into a
|
|
|
+ * struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This function takes the struct scic_sds_port from a stopped state and
|
|
|
+ * attempts to start it. To start a port it must have no assiged devices and
|
|
|
+ * it must have at least one phy assigned to it. If those conditions are
|
|
|
+ * met then the port can transition to the ready state.
|
|
|
+ * enum sci_status
|
|
|
+ * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION
|
|
|
+ * This struct scic_sds_port object could not be started because the port
|
|
|
+ * configuration is not valid.
|
|
|
+ * SCI_SUCCESS
|
|
|
+ * the start request is successful and the struct scic_sds_port object
|
|
|
+ * has transitioned to the SCI_BASE_PORT_STATE_READY.
|
|
|
+ */
|
|
|
+static enum sci_status
|
|
|
+scic_sds_port_stopped_state_start_handler(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ struct isci_host *ihost = scic_to_ihost(scic);
|
|
|
+ enum sci_status status = SCI_SUCCESS;
|
|
|
+ u32 phy_mask;
|
|
|
+
|
|
|
+ if (sci_port->assigned_device_count > 0) {
|
|
|
+ /*
|
|
|
+ * @todo This is a start failure operation because
|
|
|
+ * there are still devices assigned to this port.
|
|
|
+ * There must be no devices assigned to a port on a
|
|
|
+ * start operation.
|
|
|
+ */
|
|
|
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
|
|
|
+ }
|
|
|
+
|
|
|
+ sci_port->timer_handle =
|
|
|
+ isci_timer_create(ihost,
|
|
|
+ sci_port,
|
|
|
+ scic_sds_port_timeout_handler);
|
|
|
+
|
|
|
+ if (!sci_port->timer_handle)
|
|
|
+ return SCI_FAILURE_INSUFFICIENT_RESOURCES;
|
|
|
+
|
|
|
+ if (sci_port->reserved_rni == SCU_DUMMY_INDEX) {
|
|
|
+ u16 rni = scic_sds_remote_node_table_allocate_remote_node(
|
|
|
+ &scic->available_remote_nodes, 1);
|
|
|
+
|
|
|
+ if (rni != SCU_DUMMY_INDEX)
|
|
|
+ scic_sds_port_construct_dummy_rnc(sci_port, rni);
|
|
|
+ else
|
|
|
+ status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
|
|
|
+ sci_port->reserved_rni = rni;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (sci_port->reserved_tci == SCU_DUMMY_INDEX) {
|
|
|
+ /* Allocate a TCI and remove the sequence nibble */
|
|
|
+ u16 tci = scic_controller_allocate_io_tag(scic);
|
|
|
+
|
|
|
+ if (tci != SCU_DUMMY_INDEX)
|
|
|
+ scic_sds_port_construct_dummy_task(sci_port, tci);
|
|
|
+ else
|
|
|
+ status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
|
|
|
+ sci_port->reserved_tci = tci;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (status == SCI_SUCCESS) {
|
|
|
+ phy_mask = scic_sds_port_get_phys(sci_port);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * There are one or more phys assigned to this port. Make sure
|
|
|
+ * the port's phy mask is in fact legal and supported by the
|
|
|
+ * silicon.
|
|
|
+ */
|
|
|
+ if (scic_sds_port_is_phy_mask_valid(sci_port, phy_mask) == true) {
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &sci_port->state_machine,
|
|
|
+ SCI_BASE_PORT_STATE_READY);
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+ } else
|
|
|
+ status = SCI_FAILURE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (status != SCI_SUCCESS)
|
|
|
+ scic_sds_port_destroy_dummy_resources(sci_port);
|
|
|
+
|
|
|
+ return status;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method takes the struct scic_sds_port that is in a stopped state and handles a
|
|
|
+ * stop request. This function takes no action. enum sci_status SCI_SUCCESS the
|
|
|
+ * stop request is successful as the struct scic_sds_port object is already stopped.
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_stopped_state_stop_handler(
|
|
|
+ struct scic_sds_port *port)
|
|
|
+{
|
|
|
+ /* We are already stopped so there is nothing to do here */
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method takes the struct scic_sds_port that is in a stopped state and handles
|
|
|
+ * the destruct request. The stopped state is the only state in which the
|
|
|
+ * struct scic_sds_port can be destroyed. This function causes the port object to
|
|
|
+ * transition to the SCI_BASE_PORT_STATE_FINAL. enum sci_status SCI_SUCCESS
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_stopped_state_destruct_handler(
|
|
|
+ struct scic_sds_port *port)
|
|
|
+{
|
|
|
+ sci_base_state_machine_stop(&port->state_machine);
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method takes the struct scic_sds_port that is in a stopped state and handles
|
|
|
+ * the add phy request. In MPC mode the only time a phy can be added to a port
|
|
|
+ * is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status
|
|
|
+ * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not
|
|
|
+ * be added to the port. SCI_SUCCESS if the phy is added to the port.
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_stopped_state_add_phy_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ struct sci_sas_address port_sas_address;
|
|
|
+
|
|
|
+ /* Read the port assigned SAS Address if there is one */
|
|
|
+ scic_sds_port_get_sas_address(port, &port_sas_address);
|
|
|
+
|
|
|
+ if (port_sas_address.high != 0 && port_sas_address.low != 0) {
|
|
|
+ struct sci_sas_address phy_sas_address;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Make sure that the PHY SAS Address matches the SAS Address
|
|
|
+ * for this port. */
|
|
|
+ scic_sds_phy_get_sas_address(phy, &phy_sas_address);
|
|
|
+
|
|
|
+ if (
|
|
|
+ (port_sas_address.high != phy_sas_address.high)
|
|
|
+ || (port_sas_address.low != phy_sas_address.low)
|
|
|
+ ) {
|
|
|
+ return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return scic_sds_port_set_phy(port, phy);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method takes the struct scic_sds_port that is in a stopped state and handles
|
|
|
+ * the remove phy request. In MPC mode the only time a phy can be removed from
|
|
|
+ * a port is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status
|
|
|
+ * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not
|
|
|
+ * be added to the port. SCI_SUCCESS if the phy is added to the port.
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_stopped_state_remove_phy_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ return scic_sds_port_clear_phy(port, phy);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * ****************************************************************************
|
|
|
+ * * READY STATE HANDLERS
|
|
|
+ * **************************************************************************** */
|
|
|
+
|
|
|
+/*
|
|
|
+ * ****************************************************************************
|
|
|
+ * * RESETTING STATE HANDLERS
|
|
|
+ * **************************************************************************** */
|
|
|
+
|
|
|
+/*
|
|
|
+ * ****************************************************************************
|
|
|
+ * * STOPPING STATE HANDLERS
|
|
|
+ * **************************************************************************** */
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method takes the struct scic_sds_port that is in a stopping state and handles
|
|
|
+ * the complete io request. Should the request count reach 0 then the port
|
|
|
+ * object will transition to the stopped state. enum sci_status SCI_SUCCESS
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_stopping_state_complete_io_handler(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_remote_device *device,
|
|
|
+ struct scic_sds_request *io_request)
|
|
|
+{
|
|
|
+ scic_sds_port_decrement_request_count(sci_port);
|
|
|
+
|
|
|
+ if (sci_port->started_request_count == 0) {
|
|
|
+ sci_base_state_machine_change_state(&sci_port->state_machine,
|
|
|
+ SCI_BASE_PORT_STATE_STOPPED);
|
|
|
+ }
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * ****************************************************************************
|
|
|
+ * * RESETTING STATE HANDLERS
|
|
|
+ * **************************************************************************** */
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @port: This is the port object which is being requested to stop.
|
|
|
+ *
|
|
|
+ * This method will stop a failed port. This causes a transition to the
|
|
|
+ * stopping state. enum sci_status SCI_SUCCESS
|
|
|
+ */
|
|
|
+static enum sci_status scic_sds_port_reset_state_stop_handler(
|
|
|
+ struct scic_sds_port *port)
|
|
|
+{
|
|
|
+ sci_base_state_machine_change_state(
|
|
|
+ &port->state_machine,
|
|
|
+ SCI_BASE_PORT_STATE_STOPPING
|
|
|
+ );
|
|
|
+
|
|
|
+ return SCI_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method will transition a failed port to its ready state. The port
|
|
|
+ * failed because a hard reset request timed out but at some time later one or
|
|
|
+ * more phys in the port became ready. enum sci_status SCI_SUCCESS
|
|
|
+ */
|
|
|
+static void scic_sds_port_reset_state_link_up_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ /*
|
|
|
+ * / @todo We should make sure that the phy that has gone link up is the same
|
|
|
+ * / one on which we sent the reset. It is possible that the phy on
|
|
|
+ * / which we sent the reset is not the one that has gone link up and we
|
|
|
+ * / want to make sure that phy being reset comes back. Consider the
|
|
|
+ * / case where a reset is sent but before the hardware processes the
|
|
|
+ * / reset it get a link up on the port because of a hot plug event.
|
|
|
+ * / because of the reset request this phy will go link down almost
|
|
|
+ * / immediately. */
|
|
|
+
|
|
|
+ /*
|
|
|
+ * In the resetting state we don't notify the user regarding
|
|
|
+ * link up and link down notifications. */
|
|
|
+ scic_sds_port_general_link_up_handler(port, phy, false);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This method process link down notifications that occur during a port reset
|
|
|
+ * operation. Link downs can occur during the reset operation. enum sci_status
|
|
|
+ * SCI_SUCCESS
|
|
|
+ */
|
|
|
+static void scic_sds_port_reset_state_link_down_handler(
|
|
|
+ struct scic_sds_port *port,
|
|
|
+ struct scic_sds_phy *phy)
|
|
|
+{
|
|
|
+ /*
|
|
|
+ * In the resetting state we don't notify the user regarding
|
|
|
+ * link up and link down notifications. */
|
|
|
+ scic_sds_port_deactivate_phy(port, phy, false);
|
|
|
+}
|
|
|
+
|
|
|
+static struct scic_sds_port_state_handler
|
|
|
+scic_sds_port_state_handler_table[SCI_BASE_PORT_MAX_STATES] =
|
|
|
+{
|
|
|
+ /* SCI_BASE_PORT_STATE_STOPPED */
|
|
|
+ {
|
|
|
+ scic_sds_port_stopped_state_start_handler,
|
|
|
+ scic_sds_port_stopped_state_stop_handler,
|
|
|
+ scic_sds_port_stopped_state_destruct_handler,
|
|
|
+ scic_sds_port_default_reset_handler,
|
|
|
+ scic_sds_port_stopped_state_add_phy_handler,
|
|
|
+ scic_sds_port_stopped_state_remove_phy_handler,
|
|
|
+ scic_sds_port_default_frame_handler,
|
|
|
+ scic_sds_port_default_event_handler,
|
|
|
+ scic_sds_port_default_link_up_handler,
|
|
|
+ scic_sds_port_default_link_down_handler,
|
|
|
+ scic_sds_port_default_start_io_handler,
|
|
|
+ scic_sds_port_default_complete_io_handler
|
|
|
+ },
|
|
|
+ /* SCI_BASE_PORT_STATE_STOPPING */
|
|
|
+ {
|
|
|
+ scic_sds_port_default_start_handler,
|
|
|
+ scic_sds_port_default_stop_handler,
|
|
|
+ scic_sds_port_default_destruct_handler,
|
|
|
+ scic_sds_port_default_reset_handler,
|
|
|
+ scic_sds_port_default_add_phy_handler,
|
|
|
+ scic_sds_port_default_remove_phy_handler,
|
|
|
+ scic_sds_port_default_frame_handler,
|
|
|
+ scic_sds_port_default_event_handler,
|
|
|
+ scic_sds_port_default_link_up_handler,
|
|
|
+ scic_sds_port_default_link_down_handler,
|
|
|
+ scic_sds_port_default_start_io_handler,
|
|
|
+ scic_sds_port_stopping_state_complete_io_handler
|
|
|
+ },
|
|
|
+ /* SCI_BASE_PORT_STATE_READY */
|
|
|
+ {
|
|
|
+ scic_sds_port_default_start_handler,
|
|
|
+ scic_sds_port_default_stop_handler,
|
|
|
+ scic_sds_port_default_destruct_handler,
|
|
|
+ scic_sds_port_default_reset_handler,
|
|
|
+ scic_sds_port_default_add_phy_handler,
|
|
|
+ scic_sds_port_default_remove_phy_handler,
|
|
|
+ scic_sds_port_default_frame_handler,
|
|
|
+ scic_sds_port_default_event_handler,
|
|
|
+ scic_sds_port_default_link_up_handler,
|
|
|
+ scic_sds_port_default_link_down_handler,
|
|
|
+ scic_sds_port_default_start_io_handler,
|
|
|
+ scic_sds_port_general_complete_io_handler
|
|
|
+ },
|
|
|
+ /* SCI_BASE_PORT_STATE_RESETTING */
|
|
|
+ {
|
|
|
+ scic_sds_port_default_start_handler,
|
|
|
+ scic_sds_port_reset_state_stop_handler,
|
|
|
+ scic_sds_port_default_destruct_handler,
|
|
|
+ scic_sds_port_default_reset_handler,
|
|
|
+ scic_sds_port_default_add_phy_handler,
|
|
|
+ scic_sds_port_default_remove_phy_handler,
|
|
|
+ scic_sds_port_default_frame_handler,
|
|
|
+ scic_sds_port_default_event_handler,
|
|
|
+ scic_sds_port_reset_state_link_up_handler,
|
|
|
+ scic_sds_port_reset_state_link_down_handler,
|
|
|
+ scic_sds_port_default_start_io_handler,
|
|
|
+ scic_sds_port_general_complete_io_handler
|
|
|
+ },
|
|
|
+ /* SCI_BASE_PORT_STATE_FAILED */
|
|
|
+ {
|
|
|
+ scic_sds_port_default_start_handler,
|
|
|
+ scic_sds_port_default_stop_handler,
|
|
|
+ scic_sds_port_default_destruct_handler,
|
|
|
+ scic_sds_port_default_reset_handler,
|
|
|
+ scic_sds_port_default_add_phy_handler,
|
|
|
+ scic_sds_port_default_remove_phy_handler,
|
|
|
+ scic_sds_port_default_frame_handler,
|
|
|
+ scic_sds_port_default_event_handler,
|
|
|
+ scic_sds_port_default_link_up_handler,
|
|
|
+ scic_sds_port_default_link_down_handler,
|
|
|
+ scic_sds_port_default_start_io_handler,
|
|
|
+ scic_sds_port_general_complete_io_handler
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+/*
|
|
|
+ * ******************************************************************************
|
|
|
+ * * PORT STATE PRIVATE METHODS
|
|
|
+ * ****************************************************************************** */
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @sci_port: This is the port object which to suspend.
|
|
|
+ *
|
|
|
+ * This method will enable the SCU Port Task Scheduler for this port object but
|
|
|
+ * will leave the port task scheduler in a suspended state. none
|
|
|
+ */
|
|
|
+static void
|
|
|
+scic_sds_port_enable_port_task_scheduler(struct scic_sds_port *port)
|
|
|
+{
|
|
|
+ u32 pts_control_value;
|
|
|
+
|
|
|
+ pts_control_value = readl(&port->port_task_scheduler_registers->control);
|
|
|
+ pts_control_value |= SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND);
|
|
|
+ writel(pts_control_value, &port->port_task_scheduler_registers->control);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @sci_port: This is the port object which to resume.
|
|
|
+ *
|
|
|
+ * This method will disable the SCU port task scheduler for this port object.
|
|
|
+ * none
|
|
|
+ */
|
|
|
+static void
|
|
|
+scic_sds_port_disable_port_task_scheduler(struct scic_sds_port *port)
|
|
|
+{
|
|
|
+ u32 pts_control_value;
|
|
|
+
|
|
|
+ pts_control_value = readl(&port->port_task_scheduler_registers->control);
|
|
|
+ pts_control_value &=
|
|
|
+ ~(SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND));
|
|
|
+ writel(pts_control_value, &port->port_task_scheduler_registers->control);
|
|
|
+}
|
|
|
+
|
|
|
+static void scic_sds_port_post_dummy_remote_node(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ u8 phys_index = sci_port->physical_port_index;
|
|
|
+ union scu_remote_node_context *rnc;
|
|
|
+ u16 rni = sci_port->reserved_rni;
|
|
|
+ u32 command;
|
|
|
+
|
|
|
+ rnc = &scic->remote_node_context_table[rni];
|
|
|
+ rnc->ssp.is_valid = true;
|
|
|
+
|
|
|
+ command = SCU_CONTEXT_COMMAND_POST_RNC_32 |
|
|
|
+ phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
|
|
|
+
|
|
|
+ scic_sds_controller_post_request(scic, command);
|
|
|
+
|
|
|
+ /* ensure hardware has seen the post rnc command and give it
|
|
|
+ * ample time to act before sending the suspend
|
|
|
+ */
|
|
|
+ readl(&scic->smu_registers->interrupt_status); /* flush */
|
|
|
+ udelay(10);
|
|
|
+
|
|
|
+ command = SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX |
|
|
|
+ phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
|
|
|
+
|
|
|
+ scic_sds_controller_post_request(scic, command);
|
|
|
+}
|
|
|
+
|
|
|
+static void scic_sds_port_invalidate_dummy_remote_node(struct scic_sds_port *sci_port)
|
|
|
+{
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ u8 phys_index = sci_port->physical_port_index;
|
|
|
+ union scu_remote_node_context *rnc;
|
|
|
+ u16 rni = sci_port->reserved_rni;
|
|
|
+ u32 command;
|
|
|
+
|
|
|
+ rnc = &scic->remote_node_context_table[rni];
|
|
|
+
|
|
|
+ rnc->ssp.is_valid = false;
|
|
|
+
|
|
|
+ /* ensure the preceding tc abort request has reached the
|
|
|
+ * controller and give it ample time to act before posting the rnc
|
|
|
+ * invalidate
|
|
|
+ */
|
|
|
+ readl(&scic->smu_registers->interrupt_status); /* flush */
|
|
|
+ udelay(10);
|
|
|
+
|
|
|
+ command = SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE |
|
|
|
+ phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
|
|
|
+
|
|
|
+ scic_sds_controller_post_request(scic, command);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * ******************************************************************************
|
|
|
+ * * PORT STATE METHODS
|
|
|
+ * ****************************************************************************** */
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This method will perform the actions required by the struct scic_sds_port on
|
|
|
+ * entering the SCI_BASE_PORT_STATE_STOPPED. This function sets the stopped
|
|
|
+ * state handlers for the struct scic_sds_port object and disables the port task
|
|
|
+ * scheduler in the hardware. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_stopped_state_enter(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+
|
|
|
+ scic_sds_port_set_base_state_handlers(
|
|
|
+ sci_port, SCI_BASE_PORT_STATE_STOPPED
|
|
|
+ );
|
|
|
+
|
|
|
+ if (
|
|
|
+ SCI_BASE_PORT_STATE_STOPPING
|
|
|
+ == sci_port->state_machine.previous_state_id
|
|
|
+ ) {
|
|
|
+ /*
|
|
|
+ * If we enter this state becasuse of a request to stop
|
|
|
+ * the port then we want to disable the hardwares port
|
|
|
+ * task scheduler. */
|
|
|
+ scic_sds_port_disable_port_task_scheduler(sci_port);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This method will perform the actions required by the struct scic_sds_port on
|
|
|
+ * exiting the SCI_BASE_STATE_STOPPED. This function enables the SCU hardware
|
|
|
+ * port task scheduler. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_stopped_state_exit(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+
|
|
|
+ /* Enable and suspend the port task scheduler */
|
|
|
+ scic_sds_port_enable_port_task_scheduler(sci_port);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * scic_sds_port_ready_state_enter -
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This method will perform the actions required by the struct scic_sds_port on
|
|
|
+ * entering the SCI_BASE_PORT_STATE_READY. This function sets the ready state
|
|
|
+ * handlers for the struct scic_sds_port object, reports the port object as
|
|
|
+ * not ready and starts the ready substate machine. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_ready_state_enter(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ struct isci_host *ihost = scic_to_ihost(scic);
|
|
|
+ struct isci_port *iport = sci_port_to_iport(sci_port);
|
|
|
+ u32 prev_state;
|
|
|
+
|
|
|
+ /* Put the ready state handlers in place though they will not be there long */
|
|
|
+ scic_sds_port_set_base_state_handlers(sci_port, SCI_BASE_PORT_STATE_READY);
|
|
|
+
|
|
|
+ prev_state = sci_port->state_machine.previous_state_id;
|
|
|
+ if (prev_state == SCI_BASE_PORT_STATE_RESETTING)
|
|
|
+ isci_port_hard_reset_complete(iport, SCI_SUCCESS);
|
|
|
+ else
|
|
|
+ isci_port_not_ready(ihost, iport);
|
|
|
+
|
|
|
+ /* Post and suspend the dummy remote node context for this port. */
|
|
|
+ scic_sds_port_post_dummy_remote_node(sci_port);
|
|
|
+
|
|
|
+ /* Start the ready substate machine */
|
|
|
+ sci_base_state_machine_start(&sci_port->ready_substate_machine);
|
|
|
+}
|
|
|
+
|
|
|
+static void scic_sds_port_ready_state_exit(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+
|
|
|
+ sci_base_state_machine_stop(&sci_port->ready_substate_machine);
|
|
|
+ scic_sds_port_invalidate_dummy_remote_node(sci_port);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This method will perform the actions required by the struct scic_sds_port on
|
|
|
+ * entering the SCI_BASE_PORT_STATE_RESETTING. This function sets the resetting
|
|
|
+ * state handlers for the struct scic_sds_port object. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_resetting_state_enter(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+
|
|
|
+ scic_sds_port_set_base_state_handlers(
|
|
|
+ sci_port, SCI_BASE_PORT_STATE_RESETTING
|
|
|
+ );
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This function will perform the actions required by the
|
|
|
+ * struct scic_sds_port on
|
|
|
+ * exiting the SCI_BASE_STATE_RESETTING. This function does nothing. none
|
|
|
+ */
|
|
|
+static inline void scic_sds_port_resetting_state_exit(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+
|
|
|
+ isci_timer_stop(sci_port->timer_handle);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the void object which is cast to a
|
|
|
+ * struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This method will perform the actions required by the struct scic_sds_port on
|
|
|
+ * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping
|
|
|
+ * state handlers for the struct scic_sds_port object. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_stopping_state_enter(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+
|
|
|
+ scic_sds_port_set_base_state_handlers(
|
|
|
+ sci_port, SCI_BASE_PORT_STATE_STOPPING
|
|
|
+ );
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This function will perform the actions required by the
|
|
|
+ * struct scic_sds_port on
|
|
|
+ * exiting the SCI_BASE_STATE_STOPPING. This function does nothing. none
|
|
|
+ */
|
|
|
+static inline void
|
|
|
+scic_sds_port_stopping_state_exit(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+
|
|
|
+ isci_timer_stop(sci_port->timer_handle);
|
|
|
+
|
|
|
+ scic_sds_port_destroy_dummy_resources(sci_port);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * @object: This is the object which is cast to a struct scic_sds_port object.
|
|
|
+ *
|
|
|
+ * This function will perform the actions required by the
|
|
|
+ * struct scic_sds_port on
|
|
|
+ * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping
|
|
|
+ * state handlers for the struct scic_sds_port object. none
|
|
|
+ */
|
|
|
+static void scic_sds_port_failed_state_enter(void *object)
|
|
|
+{
|
|
|
+ struct scic_sds_port *sci_port = object;
|
|
|
+ struct isci_port *iport = sci_port_to_iport(sci_port);
|
|
|
+
|
|
|
+ scic_sds_port_set_base_state_handlers(sci_port,
|
|
|
+ SCI_BASE_PORT_STATE_FAILED);
|
|
|
+
|
|
|
+ isci_port_hard_reset_complete(iport, SCI_FAILURE_TIMEOUT);
|
|
|
+}
|
|
|
+
|
|
|
+/* --------------------------------------------------------------------------- */
|
|
|
+
|
|
|
+static const struct sci_base_state scic_sds_port_state_table[] = {
|
|
|
+ [SCI_BASE_PORT_STATE_STOPPED] = {
|
|
|
+ .enter_state = scic_sds_port_stopped_state_enter,
|
|
|
+ .exit_state = scic_sds_port_stopped_state_exit
|
|
|
+ },
|
|
|
+ [SCI_BASE_PORT_STATE_STOPPING] = {
|
|
|
+ .enter_state = scic_sds_port_stopping_state_enter,
|
|
|
+ .exit_state = scic_sds_port_stopping_state_exit
|
|
|
+ },
|
|
|
+ [SCI_BASE_PORT_STATE_READY] = {
|
|
|
+ .enter_state = scic_sds_port_ready_state_enter,
|
|
|
+ .exit_state = scic_sds_port_ready_state_exit
|
|
|
+ },
|
|
|
+ [SCI_BASE_PORT_STATE_RESETTING] = {
|
|
|
+ .enter_state = scic_sds_port_resetting_state_enter,
|
|
|
+ .exit_state = scic_sds_port_resetting_state_exit
|
|
|
+ },
|
|
|
+ [SCI_BASE_PORT_STATE_FAILED] = {
|
|
|
+ .enter_state = scic_sds_port_failed_state_enter,
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+void scic_sds_port_construct(struct scic_sds_port *sci_port, u8 index,
|
|
|
+ struct scic_sds_controller *scic)
|
|
|
+{
|
|
|
+ sci_base_state_machine_construct(&sci_port->state_machine,
|
|
|
+ sci_port,
|
|
|
+ scic_sds_port_state_table,
|
|
|
+ SCI_BASE_PORT_STATE_STOPPED);
|
|
|
+
|
|
|
+ sci_base_state_machine_start(&sci_port->state_machine);
|
|
|
+
|
|
|
+ sci_base_state_machine_construct(&sci_port->ready_substate_machine,
|
|
|
+ sci_port,
|
|
|
+ scic_sds_port_ready_substate_table,
|
|
|
+ SCIC_SDS_PORT_READY_SUBSTATE_WAITING);
|
|
|
+
|
|
|
+ sci_port->logical_port_index = SCIC_SDS_DUMMY_PORT;
|
|
|
+ sci_port->physical_port_index = index;
|
|
|
+ sci_port->active_phy_mask = 0;
|
|
|
+
|
|
|
+ sci_port->owning_controller = scic;
|
|
|
+
|
|
|
+ sci_port->started_request_count = 0;
|
|
|
+ sci_port->assigned_device_count = 0;
|
|
|
+
|
|
|
+ sci_port->reserved_rni = SCU_DUMMY_INDEX;
|
|
|
+ sci_port->reserved_tci = SCU_DUMMY_INDEX;
|
|
|
+
|
|
|
+ sci_port->timer_handle = NULL;
|
|
|
+ sci_port->port_task_scheduler_registers = NULL;
|
|
|
+
|
|
|
+ for (index = 0; index < SCI_MAX_PHYS; index++)
|
|
|
+ sci_port->phy_table[index] = NULL;
|
|
|
+}
|
|
|
+
|
|
|
+void isci_port_init(struct isci_port *iport, struct isci_host *ihost, int index)
|
|
|
+{
|
|
|
+ INIT_LIST_HEAD(&iport->remote_dev_list);
|
|
|
+ INIT_LIST_HEAD(&iport->domain_dev_list);
|
|
|
+ spin_lock_init(&iport->state_lock);
|
|
|
+ init_completion(&iport->start_complete);
|
|
|
+ iport->isci_host = ihost;
|
|
|
+ isci_port_change_state(iport, isci_freed);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * isci_port_get_state() - This function gets the status of the port object.
|
|
|
+ * @isci_port: This parameter points to the isci_port object
|
|
|
+ *
|
|
|
+ * status of the object as a isci_status enum.
|
|
|
+ */
|
|
|
+enum isci_status isci_port_get_state(
|
|
|
+ struct isci_port *isci_port)
|
|
|
+{
|
|
|
+ return isci_port->status;
|
|
|
+}
|
|
|
+
|
|
|
+static void isci_port_bc_change_received(struct isci_host *ihost,
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
|
|
|
+
|
|
|
+ dev_dbg(&ihost->pdev->dev, "%s: iphy = %p, sas_phy = %p\n",
|
|
|
+ __func__, iphy, &iphy->sas_phy);
|
|
|
+
|
|
|
+ ihost->sas_ha.notify_port_event(&iphy->sas_phy, PORTE_BROADCAST_RCVD);
|
|
|
+ scic_port_enable_broadcast_change_notification(sci_port);
|
|
|
+}
|
|
|
+
|
|
|
+void scic_sds_port_broadcast_change_received(
|
|
|
+ struct scic_sds_port *sci_port,
|
|
|
+ struct scic_sds_phy *sci_phy)
|
|
|
+{
|
|
|
+ struct scic_sds_controller *scic = sci_port->owning_controller;
|
|
|
+ struct isci_host *ihost = scic_to_ihost(scic);
|
|
|
+
|
|
|
+ /* notify the user. */
|
|
|
+ isci_port_bc_change_received(ihost, sci_port, sci_phy);
|
|
|
+}
|
|
|
+
|
|
|
+int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
|
|
|
+ struct isci_phy *iphy)
|
|
|
+{
|
|
|
+ unsigned long flags;
|
|
|
+ enum sci_status status;
|
|
|
+ int ret = TMF_RESP_FUNC_COMPLETE;
|
|
|
+
|
|
|
+ dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
|
|
|
+ __func__, iport);
|
|
|
+
|
|
|
+ init_completion(&iport->hard_reset_complete);
|
|
|
+
|
|
|
+ spin_lock_irqsave(&ihost->scic_lock, flags);
|
|
|
+
|
|
|
+ #define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
|
|
|
+ status = scic_port_hard_reset(&iport->sci, ISCI_PORT_RESET_TIMEOUT);
|
|
|
+
|
|
|
+ spin_unlock_irqrestore(&ihost->scic_lock, flags);
|
|
|
+
|
|
|
+ if (status == SCI_SUCCESS) {
|
|
|
+ wait_for_completion(&iport->hard_reset_complete);
|
|
|
+
|
|
|
+ dev_dbg(&ihost->pdev->dev,
|
|
|
+ "%s: iport = %p; hard reset completion\n",
|
|
|
+ __func__, iport);
|
|
|
+
|
|
|
+ if (iport->hard_reset_status != SCI_SUCCESS)
|
|
|
+ ret = TMF_RESP_FUNC_FAILED;
|
|
|
+ } else {
|
|
|
+ ret = TMF_RESP_FUNC_FAILED;
|
|
|
+
|
|
|
+ dev_err(&ihost->pdev->dev,
|
|
|
+ "%s: iport = %p; scic_port_hard_reset call"
|
|
|
+ " failed 0x%x\n",
|
|
|
+ __func__, iport, status);
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /* If the hard reset for the port has failed, consider this
|
|
|
+ * the same as link failures on all phys in the port.
|
|
|
+ */
|
|
|
+ if (ret != TMF_RESP_FUNC_COMPLETE) {
|
|
|
+ dev_err(&ihost->pdev->dev,
|
|
|
+ "%s: iport = %p; hard reset failed "
|
|
|
+ "(0x%x) - sending link down to libsas for phy %p\n",
|
|
|
+ __func__, iport, iport->hard_reset_status, iphy);
|
|
|
+
|
|
|
+ isci_port_link_down(ihost, iphy, iport);
|
|
|
+ }
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * isci_port_deformed() - This function is called by libsas when a port becomes
|
|
|
+ * inactive.
|
|
|
+ * @phy: This parameter specifies the libsas phy with the inactive port.
|
|
|
+ *
|
|
|
+ */
|
|
|
+void isci_port_deformed(struct asd_sas_phy *phy)
|
|
|
+{
|
|
|
+ pr_debug("%s: sas_phy = %p\n", __func__, phy);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * isci_port_formed() - This function is called by libsas when a port becomes
|
|
|
+ * active.
|
|
|
+ * @phy: This parameter specifies the libsas phy with the active port.
|
|
|
+ *
|
|
|
+ */
|
|
|
+void isci_port_formed(struct asd_sas_phy *phy)
|
|
|
+{
|
|
|
+ pr_debug("%s: sas_phy = %p, sas_port = %p\n", __func__, phy, phy->port);
|
|
|
}
|
Dan Williams