mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 08:31:55 +00:00
isci: remove port start handler
remove the handler from the port state handler table and implement the logic directly in scic_sds_port_start(). Signed-off-by: Piotr Sawicki <piotr.sawicki@intel.com> [remove a level of indirection] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Piotr Sawicki
Dan Williams
parent
e91f41ef80
commit
d76f71d988
@ -1108,7 +1108,7 @@ static enum sci_status scic_controller_start(struct scic_sds_controller *scic,
|
||||
for (index = 0; index < scic->logical_port_entries; index++) {
|
||||
struct scic_sds_port *sci_port = &ihost->ports[index].sci;
|
||||
|
||||
result = sci_port->state_handlers->start_handler(sci_port);
|
||||
result = scic_sds_port_start(sci_port);
|
||||
if (result)
|
||||
return result;
|
||||
}
|
||||
|
||||
@ -1479,12 +1479,6 @@ static enum sci_status default_port_handler(struct scic_sds_port *sci_port,
|
||||
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)
|
||||
{
|
||||
@ -1853,95 +1847,6 @@ static enum sci_status scic_sds_port_general_complete_io_handler(
|
||||
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) {
|
||||
port_state_machine_change(sci_port,
|
||||
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
|
||||
@ -2111,9 +2016,85 @@ static void scic_sds_port_reset_state_link_down_handler(
|
||||
scic_sds_port_deactivate_phy(port, phy, false);
|
||||
}
|
||||
|
||||
enum sci_status scic_sds_port_start(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;
|
||||
enum scic_sds_port_states state;
|
||||
u32 phy_mask;
|
||||
|
||||
state = sci_port->state_machine.current_state_id;
|
||||
if (state != SCI_BASE_PORT_STATE_STOPPED) {
|
||||
dev_warn(sciport_to_dev(sci_port),
|
||||
"%s: in wrong state: %d\n", __func__, state);
|
||||
return SCI_FAILURE_INVALID_STATE;
|
||||
}
|
||||
|
||||
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) {
|
||||
port_state_machine_change(sci_port,
|
||||
SCI_BASE_PORT_STATE_READY);
|
||||
|
||||
return SCI_SUCCESS;
|
||||
}
|
||||
status = SCI_FAILURE;
|
||||
}
|
||||
|
||||
if (status != SCI_SUCCESS)
|
||||
scic_sds_port_destroy_dummy_resources(sci_port);
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
static struct scic_sds_port_state_handler scic_sds_port_state_handler_table[] = {
|
||||
[SCI_BASE_PORT_STATE_STOPPED] = {
|
||||
.start_handler = scic_sds_port_stopped_state_start_handler,
|
||||
.stop_handler = scic_sds_port_stopped_state_stop_handler,
|
||||
.destruct_handler = scic_sds_port_stopped_state_destruct_handler,
|
||||
.reset_handler = scic_sds_port_default_reset_handler,
|
||||
@ -2127,7 +2108,6 @@ static struct scic_sds_port_state_handler scic_sds_port_state_handler_table[] =
|
||||
.complete_io_handler = scic_sds_port_default_complete_io_handler
|
||||
},
|
||||
[SCI_BASE_PORT_STATE_STOPPING] = {
|
||||
.start_handler = scic_sds_port_default_start_handler,
|
||||
.stop_handler = scic_sds_port_default_stop_handler,
|
||||
.destruct_handler = scic_sds_port_default_destruct_handler,
|
||||
.reset_handler = scic_sds_port_default_reset_handler,
|
||||
@ -2141,7 +2121,6 @@ static struct scic_sds_port_state_handler scic_sds_port_state_handler_table[] =
|
||||
.complete_io_handler = scic_sds_port_stopping_state_complete_io_handler
|
||||
},
|
||||
[SCI_BASE_PORT_STATE_READY] = {
|
||||
.start_handler = scic_sds_port_default_start_handler,
|
||||
.stop_handler = scic_sds_port_default_stop_handler,
|
||||
.destruct_handler = scic_sds_port_default_destruct_handler,
|
||||
.reset_handler = scic_sds_port_default_reset_handler,
|
||||
@ -2155,7 +2134,6 @@ static struct scic_sds_port_state_handler scic_sds_port_state_handler_table[] =
|
||||
.complete_io_handler = scic_sds_port_general_complete_io_handler
|
||||
},
|
||||
[SCIC_SDS_PORT_READY_SUBSTATE_WAITING] = {
|
||||
.start_handler = scic_sds_port_default_start_handler,
|
||||
.stop_handler = scic_sds_port_ready_substate_stop_handler,
|
||||
.destruct_handler = scic_sds_port_default_destruct_handler,
|
||||
.reset_handler = scic_sds_port_default_reset_handler,
|
||||
@ -2169,7 +2147,6 @@ static struct scic_sds_port_state_handler scic_sds_port_state_handler_table[] =
|
||||
.complete_io_handler = scic_sds_port_ready_substate_complete_io_handler,
|
||||
},
|
||||
[SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL] = {
|
||||
.start_handler = scic_sds_port_default_start_handler,
|
||||
.stop_handler = scic_sds_port_ready_substate_stop_handler,
|
||||
.destruct_handler = scic_sds_port_default_destruct_handler,
|
||||
.reset_handler = scic_sds_port_ready_operational_substate_reset_handler,
|
||||
@ -2183,7 +2160,6 @@ static struct scic_sds_port_state_handler scic_sds_port_state_handler_table[] =
|
||||
.complete_io_handler = scic_sds_port_ready_substate_complete_io_handler,
|
||||
},
|
||||
[SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING] = {
|
||||
.start_handler = scic_sds_port_default_start_handler,
|
||||
.stop_handler = scic_sds_port_ready_substate_stop_handler,
|
||||
.destruct_handler = scic_sds_port_default_destruct_handler,
|
||||
.reset_handler = scic_sds_port_default_reset_handler,
|
||||
@ -2197,7 +2173,6 @@ static struct scic_sds_port_state_handler scic_sds_port_state_handler_table[] =
|
||||
.complete_io_handler = scic_sds_port_ready_configuring_substate_complete_io_handler
|
||||
},
|
||||
[SCI_BASE_PORT_STATE_RESETTING] = {
|
||||
.start_handler = scic_sds_port_default_start_handler,
|
||||
.stop_handler = scic_sds_port_reset_state_stop_handler,
|
||||
.destruct_handler = scic_sds_port_default_destruct_handler,
|
||||
.reset_handler = scic_sds_port_default_reset_handler,
|
||||
@ -2211,7 +2186,6 @@ static struct scic_sds_port_state_handler scic_sds_port_state_handler_table[] =
|
||||
.complete_io_handler = scic_sds_port_general_complete_io_handler
|
||||
},
|
||||
[SCI_BASE_PORT_STATE_FAILED] = {
|
||||
.start_handler = scic_sds_port_default_start_handler,
|
||||
.stop_handler = scic_sds_port_default_stop_handler,
|
||||
.destruct_handler = scic_sds_port_default_destruct_handler,
|
||||
.reset_handler = scic_sds_port_default_reset_handler,
|
||||
|
||||
@ -312,12 +312,6 @@ typedef enum sci_status (*scic_sds_port_io_request_handler_t)(struct scic_sds_po
|
||||
struct scic_sds_request *);
|
||||
|
||||
struct scic_sds_port_state_handler {
|
||||
/**
|
||||
* The start_handler specifies the method invoked when a user
|
||||
* attempts to start a port.
|
||||
*/
|
||||
scic_sds_port_handler_t start_handler;
|
||||
|
||||
/**
|
||||
* The stop_handler specifies the method invoked when a user
|
||||
* attempts to stop a port.
|
||||
@ -417,6 +411,8 @@ enum sci_status scic_sds_port_initialize(
|
||||
void __iomem *port_configuration_regsiter,
|
||||
void __iomem *viit_registers);
|
||||
|
||||
enum sci_status scic_sds_port_start(struct scic_sds_port *sci_port);
|
||||
|
||||
enum sci_status scic_sds_port_add_phy(
|
||||
struct scic_sds_port *sci_port,
|
||||
struct scic_sds_phy *sci_phy);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user