diff options
| -rw-r--r-- | drivers/scsi/isci/phy.c | 34 | ||||
| -rw-r--r-- | drivers/scsi/isci/phy.h | 154 | ||||
| -rw-r--r-- | drivers/scsi/isci/port.c | 46 | ||||
| -rw-r--r-- | drivers/scsi/isci/port.h | 103 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_device.c | 50 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_device.h | 205 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_node_context.c | 19 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_node_context.h | 97 | ||||
| -rw-r--r-- | drivers/scsi/isci/request.c | 25 | ||||
| -rw-r--r-- | drivers/scsi/isci/request.h | 219 |
10 files changed, 432 insertions, 520 deletions
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 8d412ca689ad..87064f13f8fa 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -59,6 +59,16 @@ #include "scu_event_codes.h" #include "probe_roms.h" +#undef C +#define C(a) (#a) +static const char *phy_state_name(enum sci_phy_states state) +{ + static const char * const strings[] = PHY_STATES; + + return strings[state]; +} +#undef C + /* Maximum arbitration wait time in micro-seconds */ #define SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME (700) @@ -454,8 +464,8 @@ enum sci_status sci_phy_start(struct isci_phy *iphy) enum sci_phy_states state = iphy->sm.current_state_id; if (state != SCI_PHY_STOPPED) { - dev_dbg(sciphy_to_dev(iphy), - "%s: in wrong state: %d\n", __func__, state); + dev_dbg(sciphy_to_dev(iphy), "%s: in wrong state: %s\n", + __func__, phy_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -480,8 +490,8 @@ enum sci_status sci_phy_stop(struct isci_phy *iphy) case SCI_PHY_READY: break; default: - dev_dbg(sciphy_to_dev(iphy), - "%s: in wrong state: %d\n", __func__, state); + dev_dbg(sciphy_to_dev(iphy), "%s: in wrong state: %s\n", + __func__, phy_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -494,8 +504,8 @@ enum sci_status sci_phy_reset(struct isci_phy *iphy) enum sci_phy_states state = iphy->sm.current_state_id; if (state != SCI_PHY_READY) { - dev_dbg(sciphy_to_dev(iphy), - "%s: in wrong state: %d\n", __func__, state); + dev_dbg(sciphy_to_dev(iphy), "%s: in wrong state: %s\n", + __func__, phy_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -544,8 +554,8 @@ enum sci_status sci_phy_consume_power_handler(struct isci_phy *iphy) return SCI_SUCCESS; } default: - dev_dbg(sciphy_to_dev(iphy), - "%s: in wrong state: %d\n", __func__, state); + dev_dbg(sciphy_to_dev(iphy), "%s: in wrong state: %s\n", + __func__, phy_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -870,8 +880,8 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) } return SCI_SUCCESS; default: - dev_dbg(sciphy_to_dev(iphy), - "%s: in wrong state: %d\n", __func__, state); + dev_dbg(sciphy_to_dev(iphy), "%s: in wrong state: %s\n", + __func__, phy_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -964,8 +974,8 @@ enum sci_status sci_phy_frame_handler(struct isci_phy *iphy, u32 frame_index) return result; } default: - dev_dbg(sciphy_to_dev(iphy), - "%s: in wrong state: %d\n", __func__, state); + dev_dbg(sciphy_to_dev(iphy), "%s: in wrong state: %s\n", + __func__, phy_state_name(state)); return SCI_FAILURE_INVALID_STATE; } diff --git a/drivers/scsi/isci/phy.h b/drivers/scsi/isci/phy.h index a5e1a9e577b0..0e45833ba06d 100644 --- a/drivers/scsi/isci/phy.h +++ b/drivers/scsi/isci/phy.h @@ -343,101 +343,65 @@ enum sci_phy_counter_id { SCIC_PHY_COUNTER_SN_DWORD_SYNC_ERROR }; -enum sci_phy_states { - /** - * Simply the initial state for the base domain state machine. - */ - SCI_PHY_INITIAL, - - /** - * This state indicates that the phy has successfully been stopped. - * In this state no new IO operations are permitted on this phy. - * This state is entered from the INITIAL state. - * This state is entered from the STARTING state. - * This state is entered from the READY state. - * This state is entered from the RESETTING state. - */ - SCI_PHY_STOPPED, - - /** - * This state indicates that the phy is in the process of becomming - * ready. In this state no new IO operations are permitted on this phy. - * This state is entered from the STOPPED state. - * This state is entered from the READY state. - * This state is entered from the RESETTING state. - */ - SCI_PHY_STARTING, - - /** - * Initial state - */ - SCI_PHY_SUB_INITIAL, - - /** - * Wait state for the hardware OSSP event type notification - */ - SCI_PHY_SUB_AWAIT_OSSP_EN, - - /** - * Wait state for the PHY speed notification - */ - SCI_PHY_SUB_AWAIT_SAS_SPEED_EN, - - /** - * Wait state for the IAF Unsolicited frame notification - */ - SCI_PHY_SUB_AWAIT_IAF_UF, - - /** - * Wait state for the request to consume power - */ - SCI_PHY_SUB_AWAIT_SAS_POWER, - - /** - * Wait state for request to consume power - */ - SCI_PHY_SUB_AWAIT_SATA_POWER, - - /** - * Wait state for the SATA PHY notification - */ - SCI_PHY_SUB_AWAIT_SATA_PHY_EN, - - /** - * Wait for the SATA PHY speed notification - */ - SCI_PHY_SUB_AWAIT_SATA_SPEED_EN, - - /** - * Wait state for the SIGNATURE FIS unsolicited frame notification - */ - SCI_PHY_SUB_AWAIT_SIG_FIS_UF, - - /** - * Exit state for this state machine - */ - SCI_PHY_SUB_FINAL, - - /** - * This state indicates the the phy is now ready. Thus, the user - * is able to perform IO operations utilizing this phy as long as it - * is currently part of a valid port. - * This state is entered from the STARTING state. - */ - SCI_PHY_READY, - - /** - * This state indicates that the phy is in the process of being reset. - * In this state no new IO operations are permitted on this phy. - * This state is entered from the READY state. - */ - SCI_PHY_RESETTING, - - /** - * Simply the final state for the base phy state machine. - */ - SCI_PHY_FINAL, -}; +/** + * enum sci_phy_states - phy state machine states + * @SCI_PHY_INITIAL: Simply the initial state for the base domain state + * machine. + * @SCI_PHY_STOPPED: phy has successfully been stopped. In this state + * no new IO operations are permitted on this phy. + * @SCI_PHY_STARTING: the phy is in the process of becomming ready. In + * this state no new IO operations are permitted on + * this phy. + * @SCI_PHY_SUB_INITIAL: Initial state + * @SCI_PHY_SUB_AWAIT_OSSP_EN: Wait state for the hardware OSSP event + * type notification + * @SCI_PHY_SUB_AWAIT_SAS_SPEED_EN: Wait state for the PHY speed + * notification + * @SCI_PHY_SUB_AWAIT_IAF_UF: Wait state for the IAF Unsolicited frame + * notification + * @SCI_PHY_SUB_AWAIT_SAS_POWER: Wait state for the request to consume + * power + * @SCI_PHY_SUB_AWAIT_SATA_POWER: Wait state for request to consume + * power + * @SCI_PHY_SUB_AWAIT_SATA_PHY_EN: Wait state for the SATA PHY + * notification + * @SCI_PHY_SUB_AWAIT_SATA_SPEED_EN: Wait for the SATA PHY speed + * notification + * @SCI_PHY_SUB_AWAIT_SIG_FIS_UF: Wait state for the SIGNATURE FIS + * unsolicited frame notification + * @SCI_PHY_SUB_FINAL: Exit state for this state machine + * @SCI_PHY_READY: phy is now ready. Thus, the user is able to perform + * IO operations utilizing this phy as long as it is + * currently part of a valid port. This state is + * entered from the STARTING state. + * @SCI_PHY_RESETTING: phy is in the process of being reset. In this + * state no new IO operations are permitted on this + * phy. This state is entered from the READY state. + * @SCI_PHY_FINAL: Simply the final state for the base phy state + * machine. + */ +#define PHY_STATES {\ + C(PHY_INITIAL),\ + C(PHY_STOPPED),\ + C(PHY_STARTING),\ + C(PHY_SUB_INITIAL),\ + C(PHY_SUB_AWAIT_OSSP_EN),\ + C(PHY_SUB_AWAIT_SAS_SPEED_EN),\ + C(PHY_SUB_AWAIT_IAF_UF),\ + C(PHY_SUB_AWAIT_SAS_POWER),\ + C(PHY_SUB_AWAIT_SATA_POWER),\ + C(PHY_SUB_AWAIT_SATA_PHY_EN),\ + C(PHY_SUB_AWAIT_SATA_SPEED_EN),\ + C(PHY_SUB_AWAIT_SIG_FIS_UF),\ + C(PHY_SUB_FINAL),\ + C(PHY_READY),\ + C(PHY_RESETTING),\ + C(PHY_FINAL),\ + } +#undef C +#define C(a) SCI_##a +enum sci_phy_states PHY_STATES; +#undef C void sci_phy_construct( struct isci_phy *iphy, diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index c5ae94dbef48..5fada73b71ff 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -60,6 +60,16 @@ #define SCIC_SDS_PORT_HARD_RESET_TIMEOUT (1000) #define SCU_DUMMY_INDEX (0xFFFF) +#undef C +#define C(a) (#a) +const char *port_state_name(enum sci_port_states state) +{ + static const char * const strings[] = PORT_STATES; + + return strings[state]; +} +#undef C + static struct device *sciport_to_dev(struct isci_port *iport) { int i = iport->physical_port_index; @@ -1054,8 +1064,8 @@ enum sci_status sci_port_start(struct isci_port *iport) state = iport->sm.current_state_id; if (state != SCI_PORT_STOPPED) { - dev_warn(sciport_to_dev(iport), - "%s: in wrong state: %d\n", __func__, state); + dev_warn(sciport_to_dev(iport), "%s: in wrong state: %s\n", + __func__, port_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -1129,8 +1139,8 @@ enum sci_status sci_port_stop(struct isci_port *iport) SCI_PORT_STOPPING); return SCI_SUCCESS; default: - dev_warn(sciport_to_dev(iport), - "%s: in wrong state: %d\n", __func__, state); + dev_warn(sciport_to_dev(iport), "%s: in wrong state: %s\n", + __func__, port_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -1144,8 +1154,8 @@ static enum sci_status sci_port_hard_reset(struct isci_port *iport, u32 timeout) state = iport->sm.current_state_id; if (state != SCI_PORT_SUB_OPERATIONAL) { - dev_warn(sciport_to_dev(iport), - "%s: in wrong state: %d\n", __func__, state); + dev_warn(sciport_to_dev(iport), "%s: in wrong state: %s\n", + __func__, port_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -1239,8 +1249,8 @@ enum sci_status sci_port_add_phy(struct isci_port *iport, SCI_PORT_SUB_CONFIGURING); return SCI_SUCCESS; default: - dev_warn(sciport_to_dev(iport), - "%s: in wrong state: %d\n", __func__, state); + dev_warn(sciport_to_dev(iport), "%s: in wrong state: %s\n", + __func__, port_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -1289,8 +1299,8 @@ enum sci_status sci_port_remove_phy(struct isci_port *iport, SCI_PORT_SUB_CONFIGURING); return SCI_SUCCESS; default: - dev_warn(sciport_to_dev(iport), - "%s: in wrong state: %d\n", __func__, state); + dev_warn(sciport_to_dev(iport), "%s: in wrong state: %s\n", + __func__, port_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -1332,8 +1342,8 @@ enum sci_status sci_port_link_up(struct isci_port *iport, sci_port_general_link_up_handler(iport, iphy, PF_RESUME); return SCI_SUCCESS; default: - dev_warn(sciport_to_dev(iport), - "%s: in wrong state: %d\n", __func__, state); + dev_warn(sciport_to_dev(iport), "%s: in wrong state: %s\n", + __func__, port_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -1362,8 +1372,8 @@ enum sci_status sci_port_link_down(struct isci_port *iport, sci_port_deactivate_phy(iport, iphy, false); return SCI_SUCCESS; default: - dev_warn(sciport_to_dev(iport), - "%s: in wrong state: %d\n", __func__, state); + dev_warn(sciport_to_dev(iport), "%s: in wrong state: %s\n", + __func__, port_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -1382,8 +1392,8 @@ enum sci_status sci_port_start_io(struct isci_port *iport, iport->started_request_count++; return SCI_SUCCESS; default: - dev_warn(sciport_to_dev(iport), - "%s: in wrong state: %d\n", __func__, state); + dev_warn(sciport_to_dev(iport), "%s: in wrong state: %s\n", + __func__, port_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -1397,8 +1407,8 @@ enum sci_status sci_port_complete_io(struct isci_port *iport, state = iport->sm.current_state_id; switch (state) { case SCI_PORT_STOPPED: - dev_warn(sciport_to_dev(iport), - "%s: in wrong state: %d\n", __func__, state); + dev_warn(sciport_to_dev(iport), "%s: in wrong state: %s\n", + __func__, port_state_name(state)); return SCI_FAILURE_INVALID_STATE; case SCI_PORT_STOPPING: sci_port_decrement_request_count(iport); diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h index 321b987d582f..6b56240c2051 100644 --- a/drivers/scsi/isci/port.h +++ b/drivers/scsi/isci/port.h @@ -144,70 +144,47 @@ struct sci_port_properties { }; /** - * enum sci_port_states - This enumeration depicts all the states for the - * common port state machine. - * - * + * enum sci_port_states - port state machine states + * @SCI_PORT_STOPPED: port has successfully been stopped. In this state + * no new IO operations are permitted. This state is + * entered from the STOPPING state. + * @SCI_PORT_STOPPING: port is in the process of stopping. In this + * state no new IO operations are permitted, but + * existing IO operations are allowed to complete. + * This state is entered from the READY state. + * @SCI_PORT_READY: port is now ready. Thus, the user is able to + * perform IO operations on this port. This state is + * entered from the STARTING state. + * @SCI_PORT_SUB_WAITING: port is started and ready but has no active + * phys. + * @SCI_PORT_SUB_OPERATIONAL: port is started and ready and there is at + * least one phy operational. + * @SCI_PORT_SUB_CONFIGURING: port is started and there was an + * add/remove phy event. This state is only + * used in Automatic Port Configuration Mode + * (APC) + * @SCI_PORT_RESETTING: port is in the process of performing a hard + * reset. Thus, the user is unable to perform IO + * operations on this port. This state is entered + * from the READY state. + * @SCI_PORT_FAILED: port has failed a reset request. This state is + * entered when a port reset request times out. This + * state is entered from the RESETTING state. */ -enum sci_port_states { - /** - * This state indicates that the port has successfully been stopped. - * In this state no new IO operations are permitted. - * This state is entered from the STOPPING state. - */ - SCI_PORT_STOPPED, - - /** - * This state indicates that the port is in the process of stopping. - * In this state no new IO operations are permitted, but existing IO - * operations are allowed to complete. - * This state is entered from the READY state. - */ - SCI_PORT_STOPPING, - - /** - * This state indicates the port is now ready. Thus, the user is - * able to perform IO operations on this port. - * This state is entered from the STARTING state. - */ - SCI_PORT_READY, - - /** - * The substate where the port is started and ready but has no - * active phys. - */ - SCI_PORT_SUB_WAITING, - - /** - * The substate where the port is started and ready and there is - * at least one phy operational. - */ - SCI_PORT_SUB_OPERATIONAL, - - /** - * The substate where the port is started and there was an - * add/remove phy event. This state is only used in Automatic - * Port Configuration Mode (APC) - */ - SCI_PORT_SUB_CONFIGURING, - - /** - * This state indicates the port is in the process of performing a hard - * reset. Thus, the user is unable to perform IO operations on this - * port. - * This state is entered from the READY state. - */ - SCI_PORT_RESETTING, - - /** - * This state indicates the port has failed a reset request. This state - * is entered when a port reset request times out. - * This state is entered from the RESETTING state. - */ - SCI_PORT_FAILED, - - -}; +#define PORT_STATES {\ + C(PORT_STOPPED),\ + C(PORT_STOPPING),\ + C(PORT_READY),\ + C(PORT_SUB_WAITING),\ + C(PORT_SUB_OPERATIONAL),\ + C(PORT_SUB_CONFIGURING),\ + C(PORT_RESETTING),\ + C(PORT_FAILED),\ + } +#undef C +#define C(a) SCI_##a +enum sci_port_states PORT_STATES; +#undef C static inline void sci_port_decrement_request_count(struct isci_port *iport) { diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 934d21ea14e7..8f501b0a81d6 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -62,6 +62,16 @@ #include "scu_event_codes.h" #include "task.h" +#undef C +#define C(a) (#a) +const char *dev_state_name(enum sci_remote_device_states state) +{ + static const char * const strings[] = REMOTE_DEV_STATES; + + return strings[state]; +} +#undef C + /** * isci_remote_device_not_ready() - This function is called by the ihost when * the remote device is not ready. We mark the isci device as ready (not @@ -167,8 +177,8 @@ enum sci_status sci_remote_device_stop(struct isci_remote_device *idev, case SCI_DEV_FAILED: case SCI_DEV_FINAL: default: - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); return SCI_FAILURE_INVALID_STATE; case SCI_DEV_STOPPED: return SCI_SUCCESS; @@ -226,8 +236,8 @@ enum sci_status sci_remote_device_reset(struct isci_remote_device *idev) case SCI_DEV_RESETTING: case SCI_DEV_FINAL: default: - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); return SCI_FAILURE_INVALID_STATE; case SCI_DEV_READY: case SCI_STP_DEV_IDLE: @@ -246,8 +256,8 @@ enum sci_status sci_remote_device_reset_complete(struct isci_remote_device *idev enum sci_remote_device_states state = sm->current_state_id; if (state != SCI_DEV_RESETTING) { - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -262,8 +272,8 @@ enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev, enum sci_remote_device_states state = sm->current_state_id; if (state != SCI_STP_DEV_CMD) { - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -287,8 +297,8 @@ enum sci_status sci_remote_device_frame_handler(struct isci_remote_device *idev, case SCI_SMP_DEV_IDLE: case SCI_DEV_FINAL: default: - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); /* Return the frame back to the controller */ sci_controller_release_frame(ihost, frame_index); return SCI_FAILURE_INVALID_STATE; @@ -502,8 +512,8 @@ enum sci_status sci_remote_device_start_io(struct isci_host *ihost, case SCI_DEV_RESETTING: case SCI_DEV_FINAL: default: - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); return SCI_FAILURE_INVALID_STATE; case SCI_DEV_READY: /* attempt to start an io request for this device object. The remote @@ -637,8 +647,8 @@ enum sci_status sci_remote_device_complete_io(struct isci_host *ihost, case SCI_DEV_FAILED: case SCI_DEV_FINAL: default: - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); return SCI_FAILURE_INVALID_STATE; case SCI_DEV_READY: case SCI_STP_DEV_AWAIT_RESET: @@ -721,8 +731,8 @@ enum sci_status sci_remote_device_start_task(struct isci_host *ihost, case SCI_DEV_RESETTING: case SCI_DEV_FINAL: default: - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); return SCI_FAILURE_INVALID_STATE; case SCI_STP_DEV_IDLE: case SCI_STP_DEV_CMD: @@ -853,8 +863,8 @@ static enum sci_status sci_remote_device_destruct(struct isci_remote_device *ide struct isci_host *ihost; if (state != SCI_DEV_STOPPED) { - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -1204,8 +1214,8 @@ static enum sci_status sci_remote_device_start(struct isci_remote_device *idev, enum sci_status status; if (state != SCI_DEV_STOPPED) { - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n", - __func__, state); + dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", + __func__, dev_state_name(state)); return SCI_FAILURE_INVALID_STATE; } diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 98c2801ed089..58637ee08f55 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -179,122 +179,101 @@ enum sci_status sci_remote_device_reset_complete( /** * enum sci_remote_device_states - This enumeration depicts all the states * for the common remote device state machine. + * @SCI_DEV_INITIAL: Simply the initial state for the base remote device + * state machine. * + * @SCI_DEV_STOPPED: This state indicates that the remote device has + * successfully been stopped. In this state no new IO operations are + * permitted. This state is entered from the INITIAL state. This state + * is entered from the STOPPING state. * + * @SCI_DEV_STARTING: This state indicates the the remote device is in + * the process of becoming ready (i.e. starting). In this state no new + * IO operations are permitted. This state is entered from the STOPPED + * state. + * + * @SCI_DEV_READY: This state indicates the remote device is now ready. + * Thus, the user is able to perform IO operations on the remote device. + * This state is entered from the STARTING state. + * + * @SCI_STP_DEV_IDLE: This is the idle substate for the stp remote + * device. When there are no active IO for the device it is is in this + * state. + * + * @SCI_STP_DEV_CMD: This is the command state for for the STP remote + * device. This state is entered when the device is processing a + * non-NCQ command. The device object will fail any new start IO + * requests until this command is complete. + * + * @SCI_STP_DEV_NCQ: This is the NCQ state for the STP remote device. + * This state is entered when the device is processing an NCQ reuqest. + * It will remain in this state so long as there is one or more NCQ + * requests being processed. + * + * @SCI_STP_DEV_NCQ_ERROR: This is the NCQ error state for the STP + * remote device. This state is entered when an SDB error FIS is + * received by the device object while in the NCQ state. The device + * object will only accept a READ LOG command while in this state. + * + * @SCI_STP_DEV_ATAPI_ERROR: This is the ATAPI error state for the STP + * ATAPI remote device. This state is entered when ATAPI device sends + * error status FIS without data while the device object is in CMD + * state. A suspension event is expected in this state. The device + * object will resume right away. + * + * @SCI_STP_DEV_AWAIT_RESET: This is the READY substate indicates the + * device is waiting for the RESET task coming to be recovered from + * certain hardware specific error. + * + * @SCI_SMP_DEV_IDLE: This is the ready operational substate for the + * remote device. This is the normal operational state for a remote + * device. + * + * @SCI_SMP_DEV_CMD: This is the suspended state for the remote device. + * This is the state that the device is placed in when a RNC suspend is + * received by the SCU hardware. + * + * @SCI_DEV_STOPPING: This state indicates that the remote device is in + * the process of stopping. In this state no new IO operations are + * permitted, but existing IO operations are allowed to complete. This + * state is entered from the READY state. This state is entered from + * the FAILED state. + * + * @SCI_DEV_FAILED: This state indicates that the remote device has + * failed. In this state no new IO operations are permitted. This + * state is entered from the INITIALIZING state. This state is entered + * from the READY state. + * + * @SCI_DEV_RESETTING: This state indicates the device is being reset. + * In this state no new IO operations are permitted. This state is + * entered from the READY state. + * + * @SCI_DEV_FINAL: Simply the final state for the base remote device + * state machine. */ -enum sci_remote_device_states { - /** - * Simply the initial state for the base remote device state machine. - */ - SCI_DEV_INITIAL, - - /** - * This state indicates that the remote device has successfully been - * stopped. In this state no new IO operations are permitted. - * This state is entered from the INITIAL state. - * This state is entered from the STOPPING state. - */ - SCI_DEV_STOPPED, - - /** - * This state indicates the the remote device is in the process of - * becoming ready (i.e. starting). In this state no new IO operations - * are permitted. - * This state is entered from the STOPPED state. - */ - SCI_DEV_STARTING, - - /** - * This state indicates the remote device is now ready. Thus, the user - * is able to perform IO operations on the remote device. - * This state is entered from the STARTING state. - */ - SCI_DEV_READY, - - /** - * This is the idle substate for the stp remote device. When there are no - * active IO for the device it is is in this state. - */ - SCI_STP_DEV_IDLE, - - /** - * This is the command state for for the STP remote device. This state is - * entered when the device is processing a non-NCQ command. The device object - * will fail any new start IO requests until this command is complete. - */ - SCI_STP_DEV_CMD, - - /** - * This is the NCQ state for the STP remote device. This state is entered - * when the device is processing an NCQ reuqest. It will remain in this state - * so long as there is one or more NCQ requests being processed. - */ - SCI_STP_DEV_NCQ, - - /** - * This is the NCQ error state for the STP remote device. This state is - * entered when an SDB error FIS is received by the device object while in the - * NCQ state. The device object will only accept a READ LOG command while in - * this state. - */ - SCI_STP_DEV_NCQ_ERROR, - - /** - * This is the ATAPI error state for the STP ATAPI remote device. - * This state is entered when ATAPI device sends error status FIS - * without data while the device object is in CMD state. - * A suspension event is expected in this state. - * The device object will resume right away. - */ - SCI_STP_DEV_ATAPI_ERROR, - - /** - * This is the READY substate indicates the device is waiting for the RESET task - * coming to be recovered from certain hardware specific error. - */ - SCI_STP_DEV_AWAIT_RESET, - - /** - * This is the ready operational substate for the remote device. This is the - * normal operational state for a remote device. - */ - SCI_SMP_DEV_IDLE, - - /** - * This is the suspended state for the remote device. This is the state that - * the device is placed in when a RNC suspend is received by the SCU hardware. - */ - SCI_SMP_DEV_CMD, - - /** - * This state indicates that the remote device is in the process of - * stopping. In this state no new IO operations are permitted, but - * existing IO operations are allowed to complete. - * This state is entered from the READY state. - * This state is entered from the FAILED state. - */ - SCI_DEV_STOPPING, - - /** - * This state indicates that the remote device has failed. - * In this state no new IO operations are permitted. - * This state is entered from the INITIALIZING state. - * This state is entered from the READY state. - */ - SCI_DEV_FAILED, - - /** - * This state indicates the device is being reset. - * In this state no new IO operations are permitted. - * This state is entered from the READY state. - */ - SCI_DEV_RESETTING, - - /** - * Simply the final state for the base remote device state machine. - */ - SCI_DEV_FINAL, -}; +#define REMOTE_DEV_STATES {\ + C(DEV_INITIAL),\ + C(DEV_STOPPED),\ + C(DEV_STARTING),\ + C(DEV_READY),\ + C(STP_DEV_IDLE),\ + C(STP_DEV_CMD),\ + C(STP_DEV_NCQ),\ + C(STP_DEV_NCQ_ERROR),\ + C(STP_DEV_ATAPI_ERROR),\ + C(STP_DEV_AWAIT_RESET),\ + C(SMP_DEV_IDLE),\ + C(SMP_DEV_CMD),\ + C(DEV_STOPPING),\ + C(DEV_FAILED),\ + C(DEV_RESETTING),\ + C(DEV_FINAL),\ + } +#undef C +#define C(a) SCI_##a +enum sci_remote_device_states REMOTE_DEV_STATES; +#undef C +const char *dev_state_name(enum sci_remote_device_states state); static inline struct isci_remote_device *rnc_to_dev(struct sci_remote_node_context *rnc) { diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 748e8339d1ec..3a9463481f38 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -60,18 +60,15 @@ #include "scu_event_codes.h" #include "scu_task_context.h" +#undef C +#define C(a) (#a) +const char *rnc_state_name(enum scis_sds_remote_node_context_states state) +{ + static const char * const strings[] = RNC_STATES; -/** - * - * @sci_rnc: The RNC for which the is posted request is being made. - * - * This method will return true if the RNC is not in the initial state. In all - * other states the RNC is considered active and this will return true. The - * destroy request of the state machine drives the RNC back to the initial - * state. If the state machine changes then this routine will also have to be - * changed. bool true if the state machine is not in the initial state false if - * the state machine is in the initial state - */ + return strings[state]; +} +#undef C /** * diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index 41580ad12520..a241e0f4c865 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -85,61 +85,50 @@ struct sci_remote_node_context; typedef void (*scics_sds_remote_node_context_callback)(void *); /** - * This is the enumeration of the remote node context states. + * enum sci_remote_node_context_states + * @SCI_RNC_INITIAL initial state for a remote node context. On a resume + * request the remote node context will transition to the posting state. + * + * @SCI_RNC_POSTING: transition state that posts the RNi to the hardware. Once + * the RNC is posted the remote node context will be made ready. + * + * @SCI_RNC_INVALIDATING: transition state that will post an RNC invalidate to + * the hardware. Once the invalidate is complete the remote node context will + * transition to the posting state. + * + * @SCI_RNC_RESUMING: transition state that will post an RNC resume to the + * hardare. Once the event notification of resume complete is received the + * remote node context will transition to the ready state. + * + * @SCI_RNC_READY: state that the remote node context must be in to accept io + * request operations. + * + * @SCI_RNC_TX_SUSPENDED: state that the remote node context transitions to when + * it gets a TX suspend notification from the hardware. + * + * @SCI_RNC_TX_RX_SUSPENDED: state that the remote node context transitions to + * when it gets a TX RX suspend notification from the hardware. + * + * @SCI_RNC_AWAIT_SUSPENSION: wait state for the remote node context that waits + * for a suspend notification from the hardware. This state is entered when + * either there is a request to supend the remote node context or when there is + * a TC completion where the remote node will be suspended by the hardware. */ -enum scis_sds_remote_node_context_states { - /** - * This state is the initial state for a remote node context. On a resume - * request the remote node context will transition to the posting state. - */ - SCI_RNC_INITIAL, - - /** - * This is a transition state that posts the RNi to the hardware. Once the RNC - * is posted the remote node context will be made ready. - */ - SCI_RNC_POSTING, - - /** - * This is a transition state that will post an RNC invalidate to the - * hardware. Once the invalidate is complete the remote node context will - * transition to the posting state. - */ - SCI_RNC_INVALIDATING, - - /** - * This is a transition state that will post an RNC resume to the hardare. - * Once the event notification of resume complete is received the remote node - * context will transition to the ready state. - */ - SCI_RNC_RESUMING, - - /** - * This is the state that the remote node context must be in to accept io - * request operations. - */ - SCI_RNC_READY, - - /** - * This is the state that the remote node context transitions to when it gets - * a TX suspend notification from the hardware. - */ - SCI_RNC_TX_SUSPENDED, - - /** - * This is the state that the remote node context transitions to when it gets - * a TX RX suspend notification from the hardware. - */ - SCI_RNC_TX_RX_SUSPENDED, - - /** - * This state is a wait state for the remote node context that waits for a - * suspend notification from the hardware. This state is entered when either - * there is a request to supend the remote node context or when there is a TC - * completion where the remote node will be suspended by the hardware. - */ - SCI_RNC_AWAIT_SUSPENSION -}; +#define RNC_STATES {\ + C(RNC_INITIAL),\ + C(RNC_POSTING),\ + C(RNC_INVALIDATING),\ + C(RNC_RESUMING),\ + C(RNC_READY),\ + C(RNC_TX_SUSPENDED),\ + C(RNC_TX_RX_SUSPENDED),\ + C(RNC_AWAIT_SUSPENSION),\ + } +#undef C +#define C(a) SCI_##a +enum scis_sds_remote_node_context_states RNC_STATES; +#undef C +const char *rnc_state_name(enum scis_sds_remote_node_context_states state); /** * diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 1a39ce50529d..ab18ee0fe246 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -61,6 +61,16 @@ #include "scu_event_codes.h" #include "sas.h" +#undef C +#define C(a) (#a) +const char *req_state_name(enum sci_base_request_states state) +{ + static const char * const strings[] = REQUEST_STATES; + + return strings[state]; +} +#undef C + static struct scu_sgl_element_pair *to_sgl_element_pair(struct isci_request *ireq, int idx) { @@ -910,7 +920,8 @@ enum sci_status sci_request_complete(struct isci_request *ireq) state = ireq->sm.current_state_id; if (WARN_ONCE(state != SCI_REQ_COMPLETED, - "isci: request completion from wrong state (%d)\n", state)) + "isci: request completion from wrong state (%s)\n", + req_state_name(state))) return SCI_FAILURE_INVALID_STATE; if (ireq->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) @@ -931,8 +942,8 @@ enum sci_status sci_io_request_event_handler(struct isci_request *ireq, state = ireq->sm.current_state_id; if (state != SCI_REQ_STP_PIO_DATA_IN) { - dev_warn(&ihost->pdev->dev, "%s: (%x) in wrong state %d\n", - __func__, event_code, state); + dev_warn(&ihost->pdev->dev, "%s: (%x) in wrong state %s\n", + __func__, event_code, req_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -2306,12 +2317,8 @@ sci_io_request_tc_completion(struct isci_request *ireq, return atapi_data_tc_completion_handler(ireq, completion_code); default: - dev_warn(&ihost->pdev->dev, - "%s: SCIC IO Request given task completion " - "notification %x while in wrong state %d\n", - __func__, - completion_code, - state); + dev_warn(&ihost->pdev->dev, "%s: %x in wrong state %s\n", + __func__, completion_code, req_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index bcf2f37f23e1..057f2378452d 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -182,134 +182,103 @@ static inline struct isci_request *to_ireq(struct isci_stp_request *stp_req) } /** - * enum sci_base_request_states - This enumeration depicts all the states for - * the common request state machine. + * enum sci_base_request_states - request state machine states * + * @SCI_REQ_INIT: Simply the initial state for the base request state machine. * + * @SCI_REQ_CONSTRUCTED: This state indicates that the request has been + * constructed. This state is entered from the INITIAL state. + * + * @SCI_REQ_STARTED: This state indicates that the request has been started. + * This state is entered from the CONSTRUCTED state. + * + * @SCI_REQ_STP_UDMA_WAIT_TC_COMP: + * @SCI_REQ_STP_UDMA_WAIT_D2H: + * @SCI_REQ_STP_NON_DATA_WAIT_H2D: + * @SCI_REQ_STP_NON_DATA_WAIT_D2H: + * + * @SCI_REQ_STP_PIO_WAIT_H2D: While in this state the IO request object is + * waiting for the TC completion notification for the H2D Register FIS + * + * @SCI_REQ_STP_PIO_WAIT_FRAME: While in this state the IO request object is + * waiting for either a PIO Setup FIS or a D2H register FIS. The type of frame + * received is based on the result of the prior frame and line conditions. + * + * @SCI_REQ_STP_PIO_DATA_IN: While in this state the IO request object is + * waiting for a DATA frame from the device. + * + * @SCI_REQ_STP_PIO_DATA_OUT: While in this state the IO request object is + * waiting to transmit the next data frame to the device. + * + * @SCI_REQ_ATAPI_WAIT_H2D: While in this state the IO request object is + * waiting for the TC completion notification for the H2D Register FIS + * + * @SCI_REQ_ATAPI_WAIT_PIO_SETUP: While in this state the IO request object is + * waiting for either a PIO Setup. + * + * @SCI_REQ_ATAPI_WAIT_D2H: The non-data IO transit to this state in this state + * after receiving TC completion. While in this state IO request object is + * waiting for D2H status frame as UF. + * + * @SCI_REQ_ATAPI_WAIT_TC_COMP: When transmitting raw frames hardware reports + * task context completion after every frame submission, so in the + * non-accelerated case we need to expect the completion for the "cdb" frame. + * + * @SCI_REQ_TASK_WAIT_TC_COMP: The AWAIT_TC_COMPLETION sub-state indicates that + * the started raw task management request is waiting for the transmission of + * the initial frame (i.e. command, task, etc.). + * + * @SCI_REQ_TASK_WAIT_TC_RESP: This sub-state indicates that the started task + * management request is waiting for the reception of an unsolicited frame + * (i.e. response IU). + * + * @SCI_REQ_SMP_WAIT_RESP: This sub-state indicates that the started task + * management request is waiting for the reception of an unsolicited frame + * (i.e. response IU). + * + * @SCI_REQ_SMP_WAIT_TC_COMP: The AWAIT_TC_COMPLETION sub-state indicates that + * the started SMP request is waiting for the transmission of the initial frame + * (i.e. command, task, etc.). + * + * @SCI_REQ_COMPLETED: This state indicates that the request has completed. + * This state is entered from the STARTED state. This state is entered from the + * ABORTING state. + * + * @SCI_REQ_ABORTING: This state indicates that the request is in the process + * of being terminated/aborted. This state is entered from the CONSTRUCTED + * state. This state is entered from the STARTED state. + * + * @SCI_REQ_FINAL: Simply the final state for the base request state machine. */ -enum sci_base_request_states { - /* - * Simply the initial state for the base request state machine. - */ - SCI_REQ_INIT, - - /* - * This state indicates that the request has been constructed. - * This state is entered from the INITIAL state. - */ - SCI_REQ_CONSTRUCTED, - - /* - * This state indicates that the request has been started. This state - * is entered from the CONSTRUCTED state. - */ - SCI_REQ_STARTED, - - SCI_REQ_STP_UDMA_WAIT_TC_COMP, - SCI_REQ_STP_UDMA_WAIT_D2H, - - SCI_REQ_STP_NON_DATA_WAIT_H2D, - SCI_REQ_STP_NON_DATA_WAIT_D2H, - - /* - * While in this state the IO request object is waiting for the TC - * completion notification for the H2D Register FIS - */ - SCI_REQ_STP_PIO_WAIT_H2D, - - /* - * While in this state the IO request object is waiting for either a - * PIO Setup FIS or a D2H register FIS. The type of frame received is - * based on the result of the prior frame and line conditions. - */ - SCI_REQ_STP_PIO_WAIT_FRAME, - - /* - * While in this state the IO request object is waiting for a DATA - * frame from the device. - */ - SCI_REQ_STP_PIO_DATA_IN, - - /* - * While in this state the IO request object is waiting to transmit - * the next data frame to the device. - */ - SCI_REQ_STP_PIO_DATA_OUT, - - /* - * While in this state the IO request object is waiting for the TC - * completion notification for the H2D Register FIS - */ - SCI_REQ_ATAPI_WAIT_H2D, - - /* - * While in this state the IO request object is waiting for either a - * PIO Setup. - */ - SCI_REQ_ATAPI_WAIT_PIO_SETUP, - - /* - * The non-data IO transit to this state in this state after receiving - * TC completion. While in this state IO request object is waiting for - * D2H status frame as UF. - */ - SCI_REQ_ATAPI_WAIT_D2H, - - /* - * When transmitting raw frames hardware reports task context completion - * after every frame submission, so in the non-accelerated case we need - * to expect the completion for the "cdb" frame. - */ - SCI_REQ_ATAPI_WAIT_TC_COMP, - - /* - * The AWAIT_TC_COMPLETION sub-state indicates that the started raw - * task management request is waiting for the transmission of the - * initial frame (i.e. command, task, etc.). - */ - SCI_REQ_TASK_WAIT_TC_COMP, - - /* - * This sub-state indicates that the started task management request - * is waiting for the reception of an unsolicited frame - * (i.e. response IU). - */ - SCI_REQ_TASK_WAIT_TC_RESP, - - /* - * This sub-state indicates that the started task management request - * is waiting for the reception of an unsolicited frame - * (i.e. response IU). - */ - SCI_REQ_SMP_WAIT_RESP, - - /* - * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP - * request is waiting for the transmission of the initial frame - * (i.e. command, task, etc.). - */ - SCI_REQ_SMP_WAIT_TC_COMP, - - /* - * This state indicates that the request has completed. - * This state is entered from the STARTED state. This state is entered - * from the ABORTING state. - */ - SCI_REQ_COMPLETED, - - /* - * This state indicates that the request is in the process of being - * terminated/aborted. - * This state is entered from the CONSTRUCTED state. - * This state is entered from the STARTED state. - */ - SCI_REQ_ABORTING, - - /* - * Simply the final state for the base request state machine. - */ - SCI_REQ_FINAL, -}; +#define REQUEST_STATES {\ + C(REQ_INIT),\ + C(REQ_CONSTRUCTED),\ + C(REQ_STARTED),\ + C(REQ_STP_UDMA_WAIT_TC_COMP),\ + C(REQ_STP_UDMA_WAIT_D2H),\ + C(REQ_STP_NON_DATA_WAIT_H2D),\ + C(REQ_STP_NON_DATA_WAIT_D2H),\ + C(REQ_STP_PIO_WAIT_H2D),\ + C(REQ_STP_PIO_WAIT_FRAME),\ + C(REQ_STP_PIO_DATA_IN),\ + C(REQ_STP_PIO_DATA_OUT),\ + C(REQ_ATAPI_WAIT_H2D),\ + C(REQ_ATAPI_WAIT_PIO_SETUP),\ + C(REQ_ATAPI_WAIT_D2H),\ + C(REQ_ATAPI_WAIT_TC_COMP),\ + C(REQ_TASK_WAIT_TC_COMP),\ + C(REQ_TASK_WAIT_TC_RESP),\ + C(REQ_SMP_WAIT_RESP),\ + C(REQ_SMP_WAIT_TC_COMP),\ + C(REQ_COMPLETED),\ + C(REQ_ABORTING),\ + C(REQ_FINAL),\ + } +#undef C +#define C(a) SCI_##a +enum sci_base_request_states REQUEST_STATES; +#undef C +const char *req_state_name(enum sci_base_request_states state); enum sci_status sci_request_start(struct isci_request *ireq); enum sci_status sci_io_request_terminate(struct isci_request *ireq); |