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isci: state machine cleanup

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This cleans up several areas of the state machine mechanism:

 o Rename sci_base_state_machine_change_state to sci_change_state
 o Remove sci_base_state_machine_get_state function
 o Rename 'state_machine' struct member to 'sm' in client structs
 o Shorten the name of request states
 o Shorten state machine state names as follows:
        SCI_BASE_CONTROLLER_STATE_xxx to SCIC_xxx
        SCI_BASE_PHY_STATE_xxx to SCI_PHY_xxx
        SCIC_SDS_PHY_STARTING_SUBSTATE_xxx to SCI_PHY_SUB_xxx
        SCI_BASE_PORT_STATE_xxx to SCI_PORT_xxx and
        SCIC_SDS_PORT_READY_SUBSTATE_xxx to SCI_PORT_SUB_xxx
        SCI_BASE_REMOTE_DEVICE_STATE_xxx to SCI_DEV_xxx
        SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_xxx to SCI_STP_DEV_xxx
        SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_xxx to SCI_SMP_DEV_xxx
        SCIC_SDS_REMOTE_NODE_CONTEXT_xxx_STATE to SCI_RNC_xxx

Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Edmund Nadolski
2011-06-02 00:10:43 +00:00
committed by Dan Williams
parent 8d2c65c09c
commit e301370ac5
15 changed files with 1076 additions and 1160 deletions
Download Patch File Download Diff File Expand all files Collapse all files

201
drivers/scsi/isci/host.c
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@@ -635,8 +635,7 @@ static void scic_sds_controller_error_handler(struct scic_sds_controller *scic)
dev_err(scic_to_dev(scic), "%s: status: %#x\n", __func__,
interrupt_status);
sci_base_state_machine_change_state(&scic->state_machine,
SCI_BASE_CONTROLLER_STATE_FAILED);
sci_change_state(&scic->sm, SCIC_FAILED);
return;
}
@@ -895,14 +894,12 @@ static void scic_sds_controller_transition_to_ready(
{
struct isci_host *ihost = scic_to_ihost(scic);
if (scic->state_machine.current_state_id ==
SCI_BASE_CONTROLLER_STATE_STARTING) {
if (scic->sm.current_state_id == SCIC_STARTING) {
/*
* We move into the ready state, because some of the phys/ports
* may be up and operational.
*/
sci_base_state_machine_change_state(&scic->state_machine,
SCI_BASE_CONTROLLER_STATE_READY);
sci_change_state(&scic->sm, SCIC_READY);
isci_host_start_complete(ihost, status);
}
@@ -912,18 +909,18 @@ static bool is_phy_starting(struct scic_sds_phy *sci_phy)
{
enum scic_sds_phy_states state;
state = sci_phy->state_machine.current_state_id;
state = sci_phy->sm.current_state_id;
switch (state) {
case SCI_BASE_PHY_STATE_STARTING:
case SCIC_SDS_PHY_STARTING_SUBSTATE_INITIAL:
case SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_SPEED_EN:
case SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF:
case SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER:
case SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER:
case SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN:
case SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN:
case SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF:
case SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL:
case SCI_PHY_STARTING:
case SCI_PHY_SUB_INITIAL:
case SCI_PHY_SUB_AWAIT_SAS_SPEED_EN:
case SCI_PHY_SUB_AWAIT_IAF_UF:
case SCI_PHY_SUB_AWAIT_SAS_POWER:
case SCI_PHY_SUB_AWAIT_SATA_POWER:
case SCI_PHY_SUB_AWAIT_SATA_PHY_EN:
case SCI_PHY_SUB_AWAIT_SATA_SPEED_EN:
case SCI_PHY_SUB_AWAIT_SIG_FIS_UF:
case SCI_PHY_SUB_FINAL:
return true;
default:
return false;
@@ -957,7 +954,7 @@ static enum sci_status scic_sds_controller_start_next_phy(struct scic_sds_contro
for (index = 0; index < SCI_MAX_PHYS; index++) {
sci_phy = &ihost->phys[index].sci;
state = sci_phy->state_machine.current_state_id;
state = sci_phy->sm.current_state_id;
if (!phy_get_non_dummy_port(sci_phy))
continue;
@@ -968,12 +965,9 @@ static enum sci_status scic_sds_controller_start_next_phy(struct scic_sds_contro
* - have an indication of a connected device and it has
* finished the link training process.
*/
if ((sci_phy->is_in_link_training == false &&
state == SCI_BASE_PHY_STATE_INITIAL) ||
(sci_phy->is_in_link_training == false &&
state == SCI_BASE_PHY_STATE_STOPPED) ||
(sci_phy->is_in_link_training == true &&
is_phy_starting(sci_phy))) {
if ((sci_phy->is_in_link_training == false && state == SCI_PHY_INITIAL) ||
(sci_phy->is_in_link_training == false && state == SCI_PHY_STOPPED) ||
(sci_phy->is_in_link_training == true && is_phy_starting(sci_phy))) {
is_controller_start_complete = false;
break;
}
@@ -1059,8 +1053,7 @@ static enum sci_status scic_controller_start(struct scic_sds_controller *scic,
enum sci_status result;
u16 index;
if (scic->state_machine.current_state_id !=
SCI_BASE_CONTROLLER_STATE_INITIALIZED) {
if (scic->sm.current_state_id != SCIC_INITIALIZED) {
dev_warn(scic_to_dev(scic),
"SCIC Controller start operation requested in "
"invalid state\n");
@@ -1108,8 +1101,7 @@ static enum sci_status scic_controller_start(struct scic_sds_controller *scic,
sci_mod_timer(&scic->timer, timeout);
sci_base_state_machine_change_state(&scic->state_machine,
SCI_BASE_CONTROLLER_STATE_STARTING);
sci_change_state(&scic->sm, SCIC_STARTING);
return SCI_SUCCESS;
}
@@ -1279,8 +1271,7 @@ static void isci_host_completion_routine(unsigned long data)
static enum sci_status scic_controller_stop(struct scic_sds_controller *scic,
u32 timeout)
{
if (scic->state_machine.current_state_id !=
SCI_BASE_CONTROLLER_STATE_READY) {
if (scic->sm.current_state_id != SCIC_READY) {
dev_warn(scic_to_dev(scic),
"SCIC Controller stop operation requested in "
"invalid state\n");
@@ -1288,8 +1279,7 @@ static enum sci_status scic_controller_stop(struct scic_sds_controller *scic,
}
sci_mod_timer(&scic->timer, timeout);
sci_base_state_machine_change_state(&scic->state_machine,
SCI_BASE_CONTROLLER_STATE_STOPPING);
sci_change_state(&scic->sm, SCIC_STOPPING);
return SCI_SUCCESS;
}
@@ -1307,17 +1297,16 @@ static enum sci_status scic_controller_stop(struct scic_sds_controller *scic,
*/
static enum sci_status scic_controller_reset(struct scic_sds_controller *scic)
{
switch (scic->state_machine.current_state_id) {
case SCI_BASE_CONTROLLER_STATE_RESET:
case SCI_BASE_CONTROLLER_STATE_READY:
case SCI_BASE_CONTROLLER_STATE_STOPPED:
case SCI_BASE_CONTROLLER_STATE_FAILED:
switch (scic->sm.current_state_id) {
case SCIC_RESET:
case SCIC_READY:
case SCIC_STOPPED:
case SCIC_FAILED:
/*
* The reset operation is not a graceful cleanup, just
* perform the state transition.
*/
sci_base_state_machine_change_state(&scic->state_machine,
SCI_BASE_CONTROLLER_STATE_RESETTING);
sci_change_state(&scic->sm, SCIC_RESETTING);
return SCI_SUCCESS;
default:
dev_warn(scic_to_dev(scic),
@@ -1416,15 +1405,14 @@ static void isci_user_parameters_get(
static void scic_sds_controller_initial_state_enter(struct sci_base_state_machine *sm)
{
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), state_machine);
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), sm);
sci_base_state_machine_change_state(&scic->state_machine,
SCI_BASE_CONTROLLER_STATE_RESET);
sci_change_state(&scic->sm, SCIC_RESET);
}
static inline void scic_sds_controller_starting_state_exit(struct sci_base_state_machine *sm)
{
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), state_machine);
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), sm);
sci_del_timer(&scic->timer);
}
@@ -1551,7 +1539,7 @@ static enum sci_status scic_controller_set_interrupt_coalescence(
static void scic_sds_controller_ready_state_enter(struct sci_base_state_machine *sm)
{
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), state_machine);
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), sm);
/* set the default interrupt coalescence number and timeout value. */
scic_controller_set_interrupt_coalescence(scic, 0x10, 250);
@@ -1559,7 +1547,7 @@ static void scic_sds_controller_ready_state_enter(struct sci_base_state_machine
static void scic_sds_controller_ready_state_exit(struct sci_base_state_machine *sm)
{
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), state_machine);
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), sm);
/* disable interrupt coalescence. */
scic_controller_set_interrupt_coalescence(scic, 0, 0);
@@ -1650,7 +1638,7 @@ static enum sci_status scic_sds_controller_stop_devices(struct scic_sds_controll
static void scic_sds_controller_stopping_state_enter(struct sci_base_state_machine *sm)
{
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), state_machine);
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), sm);
/* Stop all of the components for this controller */
scic_sds_controller_stop_phys(scic);
@@ -1660,7 +1648,7 @@ static void scic_sds_controller_stopping_state_enter(struct sci_base_state_machi
static void scic_sds_controller_stopping_state_exit(struct sci_base_state_machine *sm)
{
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), state_machine);
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), sm);
sci_del_timer(&scic->timer);
}
@@ -1691,36 +1679,35 @@ static void scic_sds_controller_reset_hardware(struct scic_sds_controller *scic)
static void scic_sds_controller_resetting_state_enter(struct sci_base_state_machine *sm)
{
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), state_machine);
struct scic_sds_controller *scic = container_of(sm, typeof(*scic), sm);
scic_sds_controller_reset_hardware(scic);
sci_base_state_machine_change_state(&scic->state_machine,
SCI_BASE_CONTROLLER_STATE_RESET);
sci_change_state(&scic->sm, SCIC_RESET);
}
static const struct sci_base_state scic_sds_controller_state_table[] = {
[SCI_BASE_CONTROLLER_STATE_INITIAL] = {
[SCIC_INITIAL] = {
.enter_state = scic_sds_controller_initial_state_enter,
},
[SCI_BASE_CONTROLLER_STATE_RESET] = {},
[SCI_BASE_CONTROLLER_STATE_INITIALIZING] = {},
[SCI_BASE_CONTROLLER_STATE_INITIALIZED] = {},
[SCI_BASE_CONTROLLER_STATE_STARTING] = {
[SCIC_RESET] = {},
[SCIC_INITIALIZING] = {},
[SCIC_INITIALIZED] = {},
[SCIC_STARTING] = {
.exit_state = scic_sds_controller_starting_state_exit,
},
[SCI_BASE_CONTROLLER_STATE_READY] = {
[SCIC_READY] = {
.enter_state = scic_sds_controller_ready_state_enter,
.exit_state = scic_sds_controller_ready_state_exit,
},
[SCI_BASE_CONTROLLER_STATE_RESETTING] = {
[SCIC_RESETTING] = {
.enter_state = scic_sds_controller_resetting_state_enter,
},
[SCI_BASE_CONTROLLER_STATE_STOPPING] = {
[SCIC_STOPPING] = {
.enter_state = scic_sds_controller_stopping_state_enter,
.exit_state = scic_sds_controller_stopping_state_exit,
},
[SCI_BASE_CONTROLLER_STATE_STOPPED] = {},
[SCI_BASE_CONTROLLER_STATE_FAILED] = {}
[SCIC_STOPPED] = {},
[SCIC_FAILED] = {}
};
static void scic_sds_controller_set_default_config_parameters(struct scic_sds_controller *scic)
@@ -1774,7 +1761,7 @@ static void controller_timeout(unsigned long data)
struct sci_timer *tmr = (struct sci_timer *)data;
struct scic_sds_controller *scic = container_of(tmr, typeof(*scic), timer);
struct isci_host *ihost = scic_to_ihost(scic);
struct sci_base_state_machine *sm = &scic->state_machine;
struct sci_base_state_machine *sm = &scic->sm;
unsigned long flags;
spin_lock_irqsave(&ihost->scic_lock, flags);
@@ -1782,10 +1769,10 @@ static void controller_timeout(unsigned long data)
if (tmr->cancel)
goto done;
if (sm->current_state_id == SCI_BASE_CONTROLLER_STATE_STARTING)
if (sm->current_state_id == SCIC_STARTING)
scic_sds_controller_transition_to_ready(scic, SCI_FAILURE_TIMEOUT);
else if (sm->current_state_id == SCI_BASE_CONTROLLER_STATE_STOPPING) {
sci_base_state_machine_change_state(sm, SCI_BASE_CONTROLLER_STATE_FAILED);
else if (sm->current_state_id == SCIC_STOPPING) {
sci_change_state(sm, SCIC_FAILED);
isci_host_stop_complete(ihost, SCI_FAILURE_TIMEOUT);
} else /* / @todo Now what do we want to do in this case? */
dev_err(scic_to_dev(scic),
@@ -1820,11 +1807,11 @@ static enum sci_status scic_controller_construct(struct scic_sds_controller *sci
struct isci_host *ihost = scic_to_ihost(scic);
u8 i;
sci_base_state_machine_construct(&scic->state_machine,
sci_base_state_machine_construct(&scic->sm,
scic_sds_controller_state_table,
SCI_BASE_CONTROLLER_STATE_INITIAL);
SCIC_INITIAL);
sci_base_state_machine_start(&scic->state_machine);
sci_base_state_machine_start(&scic->sm);
scic->scu_registers = scu_base;
scic->smu_registers = smu_base;
@@ -1899,11 +1886,11 @@ int scic_oem_parameters_validate(struct scic_sds_oem_params *oem)
static enum sci_status scic_oem_parameters_set(struct scic_sds_controller *scic,
union scic_oem_parameters *scic_parms)
{
u32 state = scic->state_machine.current_state_id;
u32 state = scic->sm.current_state_id;
if (state == SCI_BASE_CONTROLLER_STATE_RESET ||
state == SCI_BASE_CONTROLLER_STATE_INITIALIZING ||
state == SCI_BASE_CONTROLLER_STATE_INITIALIZED) {
if (state == SCIC_RESET ||
state == SCIC_INITIALIZING ||
state == SCIC_INITIALIZED) {
if (scic_oem_parameters_validate(&scic_parms->sds1))
return SCI_FAILURE_INVALID_PARAMETER_VALUE;
@@ -2168,10 +2155,8 @@ static enum sci_status scic_controller_set_mode(struct scic_sds_controller *scic
{
enum sci_status status = SCI_SUCCESS;
if ((scic->state_machine.current_state_id ==
SCI_BASE_CONTROLLER_STATE_INITIALIZING) ||
(scic->state_machine.current_state_id ==
SCI_BASE_CONTROLLER_STATE_INITIALIZED)) {
if ((scic->sm.current_state_id == SCIC_INITIALIZING) ||
(scic->sm.current_state_id == SCIC_INITIALIZED)) {
switch (operating_mode) {
case SCI_MODE_SPEED:
scic->remote_node_entries = SCI_MAX_REMOTE_DEVICES;
@@ -2216,20 +2201,19 @@ static void scic_sds_controller_initialize_power_control(struct scic_sds_control
static enum sci_status scic_controller_initialize(struct scic_sds_controller *scic)
{
struct sci_base_state_machine *sm = &scic->state_machine;
struct sci_base_state_machine *sm = &scic->sm;
enum sci_status result = SCI_SUCCESS;
struct isci_host *ihost = scic_to_ihost(scic);
u32 index, state;
if (scic->state_machine.current_state_id !=
SCI_BASE_CONTROLLER_STATE_RESET) {
if (scic->sm.current_state_id != SCIC_RESET) {
dev_warn(scic_to_dev(scic),
"SCIC Controller initialize operation requested "
"in invalid state\n");
return SCI_FAILURE_INVALID_STATE;
}
sci_base_state_machine_change_state(sm, SCI_BASE_CONTROLLER_STATE_INITIALIZING);
sci_change_state(sm, SCIC_INITIALIZING);
sci_init_timer(&scic->phy_timer, phy_startup_timeout);
@@ -2374,10 +2358,10 @@ static enum sci_status scic_controller_initialize(struct scic_sds_controller *sc
/* Advance the controller state machine */
if (result == SCI_SUCCESS)
state = SCI_BASE_CONTROLLER_STATE_INITIALIZED;
state = SCIC_INITIALIZED;
else
state = SCI_BASE_CONTROLLER_STATE_FAILED;
sci_base_state_machine_change_state(sm, state);
state = SCIC_FAILED;
sci_change_state(sm, state);
return result;
}
@@ -2386,11 +2370,11 @@ static enum sci_status scic_user_parameters_set(
struct scic_sds_controller *scic,
union scic_user_parameters *scic_parms)
{
u32 state = scic->state_machine.current_state_id;
u32 state = scic->sm.current_state_id;
if (state == SCI_BASE_CONTROLLER_STATE_RESET ||
state == SCI_BASE_CONTROLLER_STATE_INITIALIZING ||
state == SCI_BASE_CONTROLLER_STATE_INITIALIZED) {
if (state == SCIC_RESET ||
state == SCIC_INITIALIZING ||
state == SCIC_INITIALIZED) {
u16 index;
/*
@@ -2612,15 +2596,15 @@ int isci_host_init(struct isci_host *isci_host)
void scic_sds_controller_link_up(struct scic_sds_controller *scic,
struct scic_sds_port *port, struct scic_sds_phy *phy)
{
switch (scic->state_machine.current_state_id) {
case SCI_BASE_CONTROLLER_STATE_STARTING:
switch (scic->sm.current_state_id) {
case SCIC_STARTING:
sci_del_timer(&scic->phy_timer);
scic->phy_startup_timer_pending = false;
scic->port_agent.link_up_handler(scic, &scic->port_agent,
port, phy);
scic_sds_controller_start_next_phy(scic);
break;
case SCI_BASE_CONTROLLER_STATE_READY:
case SCIC_READY:
scic->port_agent.link_up_handler(scic, &scic->port_agent,
port, phy);
break;
@@ -2628,16 +2612,16 @@ void scic_sds_controller_link_up(struct scic_sds_controller *scic,
dev_dbg(scic_to_dev(scic),
"%s: SCIC Controller linkup event from phy %d in "
"unexpected state %d\n", __func__, phy->phy_index,
scic->state_machine.current_state_id);
scic->sm.current_state_id);
}
}
void scic_sds_controller_link_down(struct scic_sds_controller *scic,
struct scic_sds_port *port, struct scic_sds_phy *phy)
{
switch (scic->state_machine.current_state_id) {
case SCI_BASE_CONTROLLER_STATE_STARTING:
case SCI_BASE_CONTROLLER_STATE_READY:
switch (scic->sm.current_state_id) {
case SCIC_STARTING:
case SCIC_READY:
scic->port_agent.link_down_handler(scic, &scic->port_agent,
port, phy);
break;
@@ -2647,7 +2631,7 @@ void scic_sds_controller_link_down(struct scic_sds_controller *scic,
"unexpected state %d\n",
__func__,
phy->phy_index,
scic->state_machine.current_state_id);
scic->sm.current_state_id);
}
}
@@ -2663,8 +2647,7 @@ static bool scic_sds_controller_has_remote_devices_stopping(
for (index = 0; index < controller->remote_node_entries; index++) {
if ((controller->device_table[index] != NULL) &&
(controller->device_table[index]->state_machine.current_state_id
== SCI_BASE_REMOTE_DEVICE_STATE_STOPPING))
(controller->device_table[index]->sm.current_state_id == SCI_DEV_STOPPING))
return true;
}
@@ -2678,19 +2661,17 @@ static bool scic_sds_controller_has_remote_devices_stopping(
void scic_sds_controller_remote_device_stopped(struct scic_sds_controller *scic,
struct scic_sds_remote_device *sci_dev)
{
if (scic->state_machine.current_state_id !=
SCI_BASE_CONTROLLER_STATE_STOPPING) {
if (scic->sm.current_state_id != SCIC_STOPPING) {
dev_dbg(scic_to_dev(scic),
"SCIC Controller 0x%p remote device stopped event "
"from device 0x%p in unexpected state %d\n",
scic, sci_dev,
scic->state_machine.current_state_id);
scic->sm.current_state_id);
return;
}
if (!scic_sds_controller_has_remote_devices_stopping(scic)) {
sci_base_state_machine_change_state(&scic->state_machine,
SCI_BASE_CONTROLLER_STATE_STOPPED);
sci_change_state(&scic->sm, SCIC_STOPPED);
}
}
@@ -2948,8 +2929,7 @@ enum sci_status scic_controller_start_io(
{
enum sci_status status;
if (scic->state_machine.current_state_id !=
SCI_BASE_CONTROLLER_STATE_READY) {
if (scic->sm.current_state_id != SCIC_READY) {
dev_warn(scic_to_dev(scic), "invalid state to start I/O");
return SCI_FAILURE_INVALID_STATE;
}
@@ -2986,8 +2966,7 @@ enum sci_status scic_controller_terminate_request(
{
enum sci_status status;
if (scic->state_machine.current_state_id !=
SCI_BASE_CONTROLLER_STATE_READY) {
if (scic->sm.current_state_id != SCIC_READY) {
dev_warn(scic_to_dev(scic),
"invalid state to terminate request\n");
return SCI_FAILURE_INVALID_STATE;
@@ -3037,11 +3016,11 @@ enum sci_status scic_controller_complete_io(
enum sci_status status;
u16 index;
switch (scic->state_machine.current_state_id) {
case SCI_BASE_CONTROLLER_STATE_STOPPING:
switch (scic->sm.current_state_id) {
case SCIC_STOPPING:
/* XXX: Implement this function */
return SCI_FAILURE;
case SCI_BASE_CONTROLLER_STATE_READY:
case SCIC_READY:
status = scic_sds_remote_device_complete_io(scic, rdev, request);
if (status != SCI_SUCCESS)
return status;
@@ -3060,8 +3039,7 @@ enum sci_status scic_controller_continue_io(struct scic_sds_request *sci_req)
{
struct scic_sds_controller *scic = sci_req->owning_controller;
if (scic->state_machine.current_state_id !=
SCI_BASE_CONTROLLER_STATE_READY) {
if (scic->sm.current_state_id != SCIC_READY) {
dev_warn(scic_to_dev(scic), "invalid state to continue I/O");
return SCI_FAILURE_INVALID_STATE;
}
@@ -3107,8 +3085,7 @@ enum sci_task_status scic_controller_start_task(
{
enum sci_status status;
if (scic->state_machine.current_state_id !=
SCI_BASE_CONTROLLER_STATE_READY) {
if (scic->sm.current_state_id != SCIC_READY) {
dev_warn(scic_to_dev(scic),
"%s: SCIC Controller starting task from invalid "
"state\n",