diff options
Diffstat (limited to 'drivers/scsi/isci/phy.c')
| -rw-r--r-- | drivers/scsi/isci/phy.c | 267 |
1 files changed, 93 insertions, 174 deletions
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 8beea40697d..433ea605f70 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -519,18 +519,100 @@ enum sci_status scic_sds_phy_event_handler( return sci_phy->state_handlers->event_handler(sci_phy, event_code); } -/** - * This method will process the frame index received. - * @sci_phy: - * @frame_index: - * - * enum sci_status - */ -enum sci_status scic_sds_phy_frame_handler( - struct scic_sds_phy *sci_phy, - u32 frame_index) +enum sci_status scic_sds_phy_frame_handler(struct scic_sds_phy *sci_phy, + u32 frame_index) { - return sci_phy->state_handlers->frame_handler(sci_phy, frame_index); + enum scic_sds_phy_states state = sci_phy->state_machine.current_state_id; + struct scic_sds_controller *scic = sci_phy->owning_port->owning_controller; + enum sci_status result; + + switch (state) { + case SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF: { + u32 *frame_words; + struct sas_identify_frame iaf; + struct isci_phy *iphy = sci_phy_to_iphy(sci_phy); + + result = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control, + frame_index, + (void **)&frame_words); + + if (result != SCI_SUCCESS) + return result; + + sci_swab32_cpy(&iaf, frame_words, sizeof(iaf) / sizeof(u32)); + if (iaf.frame_type == 0) { + u32 state; + + memcpy(&iphy->frame_rcvd.iaf, &iaf, sizeof(iaf)); + if (iaf.smp_tport) { + /* We got the IAF for an expander PHY go to the final + * state since there are no power requirements for + * expander phys. + */ + state = SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL; + } else { + /* We got the IAF we can now go to the await spinup + * semaphore state + */ + state = SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER; + } + sci_base_state_machine_change_state(&sci_phy->state_machine, + state); + result = SCI_SUCCESS; + } else + dev_warn(sciphy_to_dev(sci_phy), + "%s: PHY starting substate machine received " + "unexpected frame id %x\n", + __func__, frame_index); + + scic_sds_controller_release_frame(scic, frame_index); + return result; + } + case SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF: { + struct dev_to_host_fis *frame_header; + u32 *fis_frame_data; + struct isci_phy *iphy = sci_phy_to_iphy(sci_phy); + + result = scic_sds_unsolicited_frame_control_get_header( + &(scic_sds_phy_get_controller(sci_phy)->uf_control), + frame_index, + (void **)&frame_header); + + if (result != SCI_SUCCESS) + return result; + + if ((frame_header->fis_type == FIS_REGD2H) && + !(frame_header->status & ATA_BUSY)) { + scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control, + frame_index, + (void **)&fis_frame_data); + + scic_sds_controller_copy_sata_response(&iphy->frame_rcvd.fis, + frame_header, + fis_frame_data); + + /* got IAF we can now go to the await spinup semaphore state */ + sci_base_state_machine_change_state(&sci_phy->state_machine, + SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL); + + result = SCI_SUCCESS; + } else + dev_warn(sciphy_to_dev(sci_phy), + "%s: PHY starting substate machine received " + "unexpected frame id %x\n", + __func__, frame_index); + + /* Regardless of the result we are done with this frame with it */ + scic_sds_controller_release_frame(scic, frame_index); + + return result; + } + default: + dev_dbg(sciphy_to_dev(sci_phy), + "%s: in wrong state: %d\n", __func__, state); + return SCI_FAILURE_INVALID_STATE; + } + } /** @@ -1069,141 +1151,6 @@ static enum sci_status scic_sds_phy_starting_substate_await_sig_fis_event_handle return result; } - -/* - * ***************************************************************************** - * * SCIC SDS PHY FRAME_HANDLERS - * ***************************************************************************** */ - -/** - * - * @phy: This is struct scic_sds_phy object which is being requested to decode the - * frame data. - * @frame_index: This is the index of the unsolicited frame which was received - * for this phy. - * - * This method decodes the unsolicited frame when the struct scic_sds_phy is in the - * SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF. - Get the UF Header - If the UF - * is an IAF - Copy IAF data to local phy object IAF data buffer. - Change - * starting substate to wait power. - else - log warning message of unexpected - * unsolicted frame - release frame buffer enum sci_status SCI_SUCCESS - */ -static enum sci_status scic_sds_phy_starting_substate_await_iaf_uf_frame_handler( - struct scic_sds_phy *sci_phy, u32 frame_index) -{ - enum sci_status result; - u32 *frame_words; - struct sas_identify_frame iaf; - struct isci_phy *iphy = sci_phy_to_iphy(sci_phy); - - result = scic_sds_unsolicited_frame_control_get_header( - &(scic_sds_phy_get_controller(sci_phy)->uf_control), - frame_index, - (void **)&frame_words); - - if (result != SCI_SUCCESS) - return result; - - sci_swab32_cpy(&iaf, frame_words, sizeof(iaf) / sizeof(u32)); - if (iaf.frame_type == 0) { - u32 state; - - memcpy(&iphy->frame_rcvd.iaf, &iaf, sizeof(iaf)); - if (iaf.smp_tport) { - /* We got the IAF for an expander PHY go to the final - * state since there are no power requirements for - * expander phys. - */ - state = SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL; - } else { - /* We got the IAF we can now go to the await spinup - * semaphore state - */ - state = SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER; - } - sci_base_state_machine_change_state( - &sci_phy->state_machine, - state); - result = SCI_SUCCESS; - } else - dev_warn(sciphy_to_dev(sci_phy), - "%s: PHY starting substate machine received " - "unexpected frame id %x\n", - __func__, - frame_index); - - scic_sds_controller_release_frame(scic_sds_phy_get_controller(sci_phy), - frame_index); - - return result; -} - -/** - * - * @phy: This is struct scic_sds_phy object which is being requested to decode the - * frame data. - * @frame_index: This is the index of the unsolicited frame which was received - * for this phy. - * - * This method decodes the unsolicited frame when the struct scic_sds_phy is in the - * SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF. - Get the UF Header - If - * the UF is an SIGNATURE FIS - Copy IAF data to local phy object SIGNATURE FIS - * data buffer. - else - log warning message of unexpected unsolicted frame - - * release frame buffer enum sci_status SCI_SUCCESS Must decode the SIGNATURE FIS - * data - */ -static enum sci_status scic_sds_phy_starting_substate_await_sig_fis_frame_handler( - struct scic_sds_phy *sci_phy, - u32 frame_index) -{ - enum sci_status result; - struct dev_to_host_fis *frame_header; - u32 *fis_frame_data; - struct isci_phy *iphy = sci_phy_to_iphy(sci_phy); - - result = scic_sds_unsolicited_frame_control_get_header( - &(scic_sds_phy_get_controller(sci_phy)->uf_control), - frame_index, - (void **)&frame_header); - - if (result != SCI_SUCCESS) - return result; - - if ((frame_header->fis_type == FIS_REGD2H) && - !(frame_header->status & ATA_BUSY)) { - scic_sds_unsolicited_frame_control_get_buffer( - &(scic_sds_phy_get_controller(sci_phy)->uf_control), - frame_index, - (void **)&fis_frame_data); - - scic_sds_controller_copy_sata_response(&iphy->frame_rcvd.fis, - frame_header, - fis_frame_data); - - /* got IAF we can now go to the await spinup semaphore state */ - sci_base_state_machine_change_state(&sci_phy->state_machine, - SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL); - - result = SCI_SUCCESS; - } else - dev_warn(sciphy_to_dev(sci_phy), - "%s: PHY starting substate machine received " - "unexpected frame id %x\n", - __func__, - frame_index); - - /* Regardless of the result we are done with this frame with it */ - scic_sds_controller_release_frame(scic_sds_phy_get_controller(sci_phy), - frame_index); - - return result; -} - -/* - * ***************************************************************************** - * * SCIC SDS PHY POWER_HANDLERS - * ***************************************************************************** */ - /* * This method is called by the struct scic_sds_controller when the phy object is * granted power. - The notify enable spinups are turned on for this phy object @@ -1268,18 +1215,6 @@ static enum sci_status default_phy_handler(struct scic_sds_phy *sci_phy, } static enum sci_status -scic_sds_phy_default_frame_handler(struct scic_sds_phy *sci_phy, - u32 frame_index) -{ - struct scic_sds_controller *scic = scic_sds_phy_get_controller(sci_phy); - - default_phy_handler(sci_phy, __func__); - scic_sds_controller_release_frame(scic, frame_index); - - return SCI_FAILURE_INVALID_STATE; -} - -static enum sci_status scic_sds_phy_default_event_handler(struct scic_sds_phy *sci_phy, u32 event_code) { @@ -1367,82 +1302,66 @@ static enum sci_status scic_sds_phy_resetting_state_event_handler(struct scic_sd static const struct scic_sds_phy_state_handler scic_sds_phy_state_handler_table[] = { [SCI_BASE_PHY_STATE_INITIAL] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_default_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCI_BASE_PHY_STATE_STOPPED] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_default_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCI_BASE_PHY_STATE_STARTING] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_default_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_INITIAL] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_default_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_OSSP_EN] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_starting_substate_await_ossp_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_SPEED_EN] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_starting_substate_await_sas_phy_speed_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF] = { - .frame_handler = scic_sds_phy_starting_substate_await_iaf_uf_frame_handler, .event_handler = scic_sds_phy_starting_substate_await_iaf_uf_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_starting_substate_await_sas_power_event_handler, .consume_power_handler = scic_sds_phy_starting_substate_await_sas_power_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_starting_substate_await_sata_power_event_handler, .consume_power_handler = scic_sds_phy_starting_substate_await_sata_power_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_starting_substate_await_sata_phy_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_starting_substate_await_sata_speed_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF] = { - .frame_handler = scic_sds_phy_starting_substate_await_sig_fis_frame_handler, .event_handler = scic_sds_phy_starting_substate_await_sig_fis_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_default_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCI_BASE_PHY_STATE_READY] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_ready_state_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCI_BASE_PHY_STATE_RESETTING] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_resetting_state_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler }, [SCI_BASE_PHY_STATE_FINAL] = { - .frame_handler = scic_sds_phy_default_frame_handler, .event_handler = scic_sds_phy_default_event_handler, .consume_power_handler = scic_sds_phy_default_consume_power_handler } |