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Diffstat (limited to 'drivers/scsi/isci/core/scic_sds_phy.c')
| -rw-r--r-- | drivers/scsi/isci/core/scic_sds_phy.c | 2807 |
1 files changed, 2807 insertions, 0 deletions
diff --git a/drivers/scsi/isci/core/scic_sds_phy.c b/drivers/scsi/isci/core/scic_sds_phy.c new file mode 100644 index 000000000000..7d012b571b5b --- /dev/null +++ b/drivers/scsi/isci/core/scic_sds_phy.c @@ -0,0 +1,2807 @@ +/* + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * BSD LICENSE + * + * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "intel_ata.h" +#include "intel_sata.h" +#include "sci_base_state.h" +#include "sci_base_state_machine.h" +#include "scic_phy.h" +#include "scic_sds_controller.h" +#include "scic_sds_phy.h" +#include "scic_sds_phy_registers.h" +#include "scic_sds_port.h" +#include "scic_user_callback.h" +#include "sci_environment.h" +#include "sci_util.h" +#include "scu_event_codes.h" + +#define SCIC_SDS_PHY_MIN_TIMER_COUNT (SCI_MAX_PHYS) +#define SCIC_SDS_PHY_MAX_TIMER_COUNT (SCI_MAX_PHYS) + +/* Maximum arbitration wait time in micro-seconds */ +#define SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME (700) + +/* + * ***************************************************************************** + * * SCIC SDS PHY Internal Methods + * ***************************************************************************** */ + +/** + * This method will initialize the phy link layer registers + * @this_phy: + * @link_layer_registers: + * + * enum sci_status + */ +static enum sci_status scic_sds_phy_link_layer_initialization( + struct scic_sds_phy *this_phy, + struct scu_link_layer_registers *link_layer_registers) +{ + u32 phy_configuration; + struct sas_capabilities phy_capabilities; + u32 parity_check = 0; + u32 parity_count = 0; + u32 link_layer_control; + + this_phy->link_layer_registers = link_layer_registers; + + /* Set our IDENTIFY frame data */ + #define SCI_END_DEVICE 0x01 + + SCU_SAS_TIID_WRITE( + this_phy, + (SCU_SAS_TIID_GEN_BIT(SMP_INITIATOR) + | SCU_SAS_TIID_GEN_BIT(SSP_INITIATOR) + | SCU_SAS_TIID_GEN_BIT(STP_INITIATOR) + | SCU_SAS_TIID_GEN_BIT(DA_SATA_HOST) + | SCU_SAS_TIID_GEN_VAL(DEVICE_TYPE, SCI_END_DEVICE)) + ); + + /* Write the device SAS Address */ + SCU_SAS_TIDNH_WRITE(this_phy, 0xFEDCBA98); + SCU_SAS_TIDNL_WRITE(this_phy, this_phy->phy_index); + + /* Write the source SAS Address */ + SCU_SAS_TISSAH_WRITE( + this_phy, + this_phy->owning_port->owning_controller->oem_parameters.sds1.phys[ + this_phy->phy_index].sas_address.high + ); + SCU_SAS_TISSAL_WRITE( + this_phy, + this_phy->owning_port->owning_controller->oem_parameters.sds1.phys[ + this_phy->phy_index].sas_address.low + ); + + /* Clear and Set the PHY Identifier */ + SCU_SAS_TIPID_WRITE(this_phy, 0x00000000); + SCU_SAS_TIPID_WRITE(this_phy, SCU_SAS_TIPID_GEN_VALUE(ID, this_phy->phy_index)); + + /* Change the initial state of the phy configuration register */ + phy_configuration = SCU_SAS_PCFG_READ(this_phy); + + /* Hold OOB state machine in reset */ + phy_configuration |= SCU_SAS_PCFG_GEN_BIT(OOB_RESET); + SCU_SAS_PCFG_WRITE(this_phy, phy_configuration); + + /* Configure the SNW capabilities */ + phy_capabilities.u.all = 0; + phy_capabilities.u.bits.start = 1; + phy_capabilities.u.bits.gen3_without_ssc_supported = 1; + phy_capabilities.u.bits.gen2_without_ssc_supported = 1; + phy_capabilities.u.bits.gen1_without_ssc_supported = 1; + if (this_phy->owning_port->owning_controller->oem_parameters.sds1. + controller.do_enable_ssc == true) { + phy_capabilities.u.bits.gen3_with_ssc_supported = 1; + phy_capabilities.u.bits.gen2_with_ssc_supported = 1; + phy_capabilities.u.bits.gen1_with_ssc_supported = 1; + } + + /* + * The SAS specification indicates that the phy_capabilities that + * are transmitted shall have an even parity. Calculate the parity. */ + parity_check = phy_capabilities.u.all; + while (parity_check != 0) { + if (parity_check & 0x1) + parity_count++; + parity_check >>= 1; + } + + /* + * If parity indicates there are an odd number of bits set, then + * set the parity bit to 1 in the phy capabilities. */ + if ((parity_count % 2) != 0) + phy_capabilities.u.bits.parity = 1; + + SCU_SAS_PHYCAP_WRITE(this_phy, phy_capabilities.u.all); + + /* Set the enable spinup period but disable the ability to send notify enable spinup */ + SCU_SAS_ENSPINUP_WRITE(this_phy, SCU_ENSPINUP_GEN_VAL(COUNT, 0x33)); + +#if defined(CONFIG_PBG_HBA_A0) || defined(CONFIG_PBG_HBA_A2) || defined(CONFIG_PBG_HBA_BETA) + /* / @todo Provide a way to write this register correctly */ + scu_link_layer_register_write(this_phy, afe_lookup_table_control, 0x02108421); +#else + /* / @todo Provide a way to write this register correctly */ + scu_link_layer_register_write(this_phy, afe_lookup_table_control, 0x0e739ce7); +#endif + + link_layer_control = SCU_SAS_LLCTL_GEN_VAL( + NO_OUTBOUND_TASK_TIMEOUT, + (u8)this_phy->owning_port->owning_controller-> + user_parameters.sds1.no_outbound_task_timeout + ); + +/* #define COMPILED_MAX_LINK_RATE SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN1 */ +/* #define COMPILED_MAX_LINK_RATE SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN2 */ +#define COMPILED_MAX_LINK_RATE SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN3 + + if (this_phy->owning_port->owning_controller->user_parameters.sds1. + phys[this_phy->phy_index].max_speed_generation == SCIC_SDS_PARM_GEN3_SPEED) { + link_layer_control |= SCU_SAS_LLCTL_GEN_VAL( + MAX_LINK_RATE, COMPILED_MAX_LINK_RATE + ); + } else if (this_phy->owning_port->owning_controller->user_parameters.sds1. + phys[this_phy->phy_index].max_speed_generation == SCIC_SDS_PARM_GEN2_SPEED) { + link_layer_control |= SCU_SAS_LLCTL_GEN_VAL( + MAX_LINK_RATE, + min( + SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN2, + COMPILED_MAX_LINK_RATE) + ); + } else { + link_layer_control |= SCU_SAS_LLCTL_GEN_VAL( + MAX_LINK_RATE, + min( + SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN1, + COMPILED_MAX_LINK_RATE) + ); + } + + scu_link_layer_register_write( + this_phy, link_layer_control, link_layer_control + ); + + /* + * Program the max ARB time for the PHY to 700us so we inter-operate with + * the PMC expander which shuts down PHYs if the expander PHY generates too + * many breaks. This time value will guarantee that the initiator PHY will + * generate the break. */ +#if defined(CONFIG_PBG_HBA_A0) || defined(CONFIG_PBG_HBA_A2) + scu_link_layer_register_write( + this_phy, + maximum_arbitration_wait_timer_timeout, + SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME + ); +#endif /* defined(CONFIG_PBG_HBA_A0) || defined(CONFIG_PBG_HBA_A2) */ + + /* + * Set the link layer hang detection to 500ms (0x1F4) from its default + * value of 128ms. Max value is 511 ms. */ + scu_link_layer_register_write( + this_phy, link_layer_hang_detection_timeout, 0x1F4 + ); + + /* We can exit the initial state to the stopped state */ + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(this_phy), + SCI_BASE_PHY_STATE_STOPPED + ); + + return SCI_SUCCESS; +} + +/** + * This function will handle the sata SIGNATURE FIS timeout condition. It will + * restart the starting substate machine since we dont know what has actually + * happening. + */ +static void scic_sds_phy_sata_timeout(void *phy) +{ + struct scic_sds_phy *sci_phy = phy; + + dev_dbg(sciphy_to_dev(sci_phy), + "%s: SCIC SDS Phy 0x%p did not receive signature fis before " + "timeout.\n", + __func__, + sci_phy); + + sci_base_state_machine_stop( + scic_sds_phy_get_starting_substate_machine(sci_phy)); + + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(sci_phy), + SCI_BASE_PHY_STATE_STARTING + ); +} + +/* + * ***************************************************************************** + * * SCIC SDS PHY External Methods + * ***************************************************************************** */ + +/** + * This method returns the object size for a phy object. + * + * u32 + */ + +/** + * This method returns the minimum number of timers required for a phy object. + * + * u32 + */ + +/** + * This method returns the maximum number of timers required for a phy object. + * + * u32 + */ + +#ifdef SCIC_DEBUG_ENABLED +/** + * scic_sds_phy_observe_state_change() - + * @our_observer: + * + * Debug code to record the state transitions in the phy + */ +void scic_sds_phy_observe_state_change( + struct sci_base_observer *our_observer, + struct sci_base_subject *the_subject) +{ + struct scic_sds_phy *this_phy; + struct sci_base_state_machine *the_state_machine; + + u8 transition_requestor; + u32 base_state_id; + u32 starting_substate_id; + + the_state_machine = (struct sci_base_state_machine *)the_subject; + this_phy = (struct scic_sds_phy *)the_state_machine->state_machine_owner; + + if (the_state_machine == &this_phy->parent.state_machine) { + transition_requestor = 0x01; + } else if (the_state_machine == &this_phy->starting_substate_machine) { + transition_requestor = 0x02; + } else { + transition_requestor = 0xFF; + } + + base_state_id = + sci_base_state_machine_get_state(&this_phy->parent.state_machine); + starting_substate_id = + sci_base_state_machine_get_state(&this_phy->starting_substate_machine); + + this_phy->state_record.state_transition_table[ + this_phy->state_record.index++] = ((transition_requestor << 24) + | ((u8)base_state_id << 8) + | ((u8)starting_substate_id)); + + this_phy->state_record.index = + this_phy->state_record.index & (MAX_STATE_TRANSITION_RECORD - 1); + +} +#endif /* SCIC_DEBUG_ENABLED */ + +#ifdef SCIC_DEBUG_ENABLED +/** + * scic_sds_phy_initialize_state_recording() - + * + * This method initializes the state record debug information for the phy + * object. The state machines for the phy object must be constructed before + * this function is called. + */ +void scic_sds_phy_initialize_state_recording( + struct scic_sds_phy *this_phy) +{ + this_phy->state_record.index = 0; + + sci_base_observer_initialize( + &this_phy->state_record.base_state_observer, + scic_sds_phy_observe_state_change, + &this_phy->parent.state_machine.parent + ); + + sci_base_observer_initialize( + &this_phy->state_record.starting_state_observer, + scic_sds_phy_observe_state_change, + &this_phy->starting_substate_machine.parent + ); +} +#endif /* SCIC_DEBUG_ENABLED */ + +/** + * This method will construct the struct scic_sds_phy object + * @this_phy: + * @owning_port: + * @phy_index: + * + */ +void scic_sds_phy_construct( + struct scic_sds_phy *this_phy, + struct scic_sds_port *owning_port, + u8 phy_index) +{ + /* + * Call the base constructor first + */ + sci_base_phy_construct( + &this_phy->parent, + scic_sds_phy_state_table + ); + + /* Copy the rest of the input data to our locals */ + this_phy->owning_port = owning_port; + this_phy->phy_index = phy_index; + this_phy->bcn_received_while_port_unassigned = false; + this_phy->protocol = SCIC_SDS_PHY_PROTOCOL_UNKNOWN; + this_phy->link_layer_registers = NULL; + this_phy->max_negotiated_speed = SCI_SAS_NO_LINK_RATE; + + /* Clear out the identification buffer data */ + memset(&this_phy->phy_type, 0, sizeof(this_phy->phy_type)); + + /* Initialize the the substate machines */ + sci_base_state_machine_construct( + &this_phy->starting_substate_machine, + &this_phy->parent.parent, + scic_sds_phy_starting_substates, + SCIC_SDS_PHY_STARTING_SUBSTATE_INITIAL + ); + + #ifdef SCIC_DEBUG_ENABLED + scic_sds_phy_initialize_state_recording(this_phy); + #endif /* SCIC_DEBUG_ENABLED */ +} + +/** + * This method returns the port currently containing this phy. If the phy is + * currently contained by the dummy port, then the phy is considered to not + * be part of a port. + * @this_phy: This parameter specifies the phy for which to retrieve the + * containing port. + * + * This method returns a handle to a port that contains the supplied phy. + * SCI_INVALID_HANDLE This value is returned if the phy is not part of a real + * port (i.e. it's contained in the dummy port). !SCI_INVALID_HANDLE All other + * values indicate a handle/pointer to the port containing the phy. + */ +struct scic_sds_port *scic_sds_phy_get_port( + struct scic_sds_phy *this_phy) +{ + if (scic_sds_port_get_index(this_phy->owning_port) == SCIC_SDS_DUMMY_PORT) + return SCI_INVALID_HANDLE; + + return this_phy->owning_port; +} + +/** + * This method will assign a port to the phy object. + * @out]: this_phy This parameter specifies the phy for which to assign a port + * object. + * + * + */ +void scic_sds_phy_set_port( + struct scic_sds_phy *this_phy, + struct scic_sds_port *the_port) +{ + this_phy->owning_port = the_port; + + if (this_phy->bcn_received_while_port_unassigned) { + this_phy->bcn_received_while_port_unassigned = false; + scic_sds_port_broadcast_change_received(this_phy->owning_port, this_phy); + } +} + +/** + * This method will initialize the constructed phy + * @sci_phy: + * @link_layer_registers: + * + * enum sci_status + */ +enum sci_status scic_sds_phy_initialize( + struct scic_sds_phy *sci_phy, + struct scu_link_layer_registers *link_layer_registers) +{ + /* Create the SIGNATURE FIS Timeout timer for this phy */ + sci_phy->sata_timeout_timer = scic_cb_timer_create( + scic_sds_phy_get_controller(sci_phy), + scic_sds_phy_sata_timeout, + sci_phy + ); + + /* Perofrm the initialization of the PE hardware */ + scic_sds_phy_link_layer_initialization(sci_phy, link_layer_registers); + + /* + * There is nothing that needs to be done in this state just + * transition to the stopped state. */ + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(sci_phy), + SCI_BASE_PHY_STATE_STOPPED + ); + + return SCI_SUCCESS; +} + + +/** + * + * @this_phy: The phy object to be suspended. + * + * This function will perform the register reads/writes to suspend the SCU + * hardware protocol engine. none + */ +void scic_sds_phy_suspend( + struct scic_sds_phy *this_phy) +{ + u32 scu_sas_pcfg_value; + + scu_sas_pcfg_value = SCU_SAS_PCFG_READ(this_phy); + + scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE); + + SCU_SAS_PCFG_WRITE(this_phy, scu_sas_pcfg_value); +} + +/** + * + * @this_phy: The phy object to resume. + * + * This function will perform the register reads/writes required to resume the + * SCU hardware protocol engine. none + */ +void scic_sds_phy_resume( + struct scic_sds_phy *this_phy) +{ + u32 scu_sas_pcfg_value; + + scu_sas_pcfg_value = SCU_SAS_PCFG_READ(this_phy); + + scu_sas_pcfg_value &= ~SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE); + + SCU_SAS_PCFG_WRITE(this_phy, scu_sas_pcfg_value); +} + +/** + * This method returns the local sas address assigned to this phy. + * @this_phy: This parameter specifies the phy for which to retrieve the local + * SAS address. + * @sas_address: This parameter specifies the location into which to copy the + * local SAS address. + * + */ +void scic_sds_phy_get_sas_address( + struct scic_sds_phy *this_phy, + struct sci_sas_address *sas_address) +{ + sas_address->high = SCU_SAS_TISSAH_READ(this_phy); + sas_address->low = SCU_SAS_TISSAL_READ(this_phy); +} + +/** + * This method returns the remote end-point (i.e. attached) sas address + * assigned to this phy. + * @this_phy: This parameter specifies the phy for which to retrieve the remote + * end-point SAS address. + * @sas_address: This parameter specifies the location into which to copy the + * remote end-point SAS address. + * + */ +void scic_sds_phy_get_attached_sas_address( + struct scic_sds_phy *this_phy, + struct sci_sas_address *sas_address) +{ + sas_address->high + = this_phy->phy_type.sas.identify_address_frame_buffer.sas_address.high; + sas_address->low + = this_phy->phy_type.sas.identify_address_frame_buffer.sas_address.low; +} + +/** + * This method returns the supported protocols assigned to this phy + * @this_phy: + * + * + */ +void scic_sds_phy_get_protocols( + struct scic_sds_phy *this_phy, + struct sci_sas_identify_address_frame_protocols *protocols) +{ + protocols->u.all = (u16)(SCU_SAS_TIID_READ(this_phy) & 0x0000FFFF); +} + +/** + * + * @this_phy: The parameter is the phy object for which the attached phy + * protcols are to be returned. + * + * This method returns the supported protocols for the attached phy. If this + * is a SAS phy the protocols are returned from the identify address frame. If + * this is a SATA phy then protocols are made up and the target phy is an STP + * target phy. The caller will get the entire set of bits for the protocol + * value. + */ +void scic_sds_phy_get_attached_phy_protocols( + struct scic_sds_phy *this_phy, + struct sci_sas_identify_address_frame_protocols *protocols) +{ + protocols->u.all = 0; + + if (this_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) { + protocols->u.all = + this_phy->phy_type.sas.identify_address_frame_buffer.protocols.u.all; + } else if (this_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) { + protocols->u.bits.stp_target = 1; + } +} + +/* + * ***************************************************************************** + * * SCIC SDS PHY Handler Redirects + * ***************************************************************************** */ + +/** + * This method will attempt to start the phy object. This request is only valid + * when the phy is in the stopped state + * @this_phy: + * + * enum sci_status + */ +enum sci_status scic_sds_phy_start( + struct scic_sds_phy *this_phy) +{ + return this_phy->state_handlers->parent.start_handler(&this_phy->parent); +} + +/** + * This method will attempt to stop the phy object. + * @this_phy: + * + * enum sci_status SCI_SUCCESS if the phy is going to stop SCI_INVALID_STATE if the + * phy is not in a valid state to stop + */ +enum sci_status scic_sds_phy_stop( + struct scic_sds_phy *this_phy) +{ + return this_phy->state_handlers->parent.stop_handler(&this_phy->parent); +} + +/** + * This method will attempt to reset the phy. This request is only valid when + * the phy is in an ready state + * @this_phy: + * + * enum sci_status + */ +enum sci_status scic_sds_phy_reset( + struct scic_sds_phy *this_phy) +{ + return this_phy->state_handlers->parent.reset_handler( + &this_phy->parent + ); +} + +/** + * This method will process the event code received. + * @this_phy: + * @event_code: + * + * enum sci_status + */ +enum sci_status scic_sds_phy_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + return this_phy->state_handlers->event_handler(this_phy, event_code); +} + +/** + * This method will process the frame index received. + * @this_phy: + * @frame_index: + * + * enum sci_status + */ +enum sci_status scic_sds_phy_frame_handler( + struct scic_sds_phy *this_phy, + u32 frame_index) +{ + return this_phy->state_handlers->frame_handler(this_phy, frame_index); +} + +/** + * This method will give the phy permission to consume power + * @this_phy: + * + * enum sci_status + */ +enum sci_status scic_sds_phy_consume_power_handler( + struct scic_sds_phy *this_phy) +{ + return this_phy->state_handlers->consume_power_handler(this_phy); +} + +/* + * ***************************************************************************** + * * SCIC PHY Public Methods + * ***************************************************************************** */ + + +enum sci_status scic_sas_phy_get_properties( + struct scic_sds_phy *sci_phy, + struct scic_sas_phy_properties *properties) +{ + if (sci_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) { + memcpy( + &properties->received_iaf, + &sci_phy->phy_type.sas.identify_address_frame_buffer, + sizeof(struct sci_sas_identify_address_frame) + ); + + properties->received_capabilities.u.all + = SCU_SAS_RECPHYCAP_READ(sci_phy); + + return SCI_SUCCESS; + } + + return SCI_FAILURE; +} + + +enum sci_status scic_sata_phy_get_properties( + struct scic_sds_phy *sci_phy, + struct scic_sata_phy_properties *properties) +{ + if (sci_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) { + memcpy( + &properties->signature_fis, + &sci_phy->phy_type.sata.signature_fis_buffer, + sizeof(struct sata_fis_reg_d2h) + ); + + /* / @todo add support for port selectors. */ + properties->is_port_selector_present = false; + + return SCI_SUCCESS; + } + + return SCI_FAILURE; +} + +/* + * ***************************************************************************** + * * SCIC SDS PHY HELPER FUNCTIONS + * ***************************************************************************** */ + + +/** + * + * @this_phy: The phy object that received SAS PHY DETECTED. + * + * This method continues the link training for the phy as if it were a SAS PHY + * instead of a SATA PHY. This is done because the completion queue had a SAS + * PHY DETECTED event when the state machine was expecting a SATA PHY event. + * none + */ +static void scic_sds_phy_start_sas_link_training( + struct scic_sds_phy *this_phy) +{ + u32 phy_control; + + phy_control = SCU_SAS_PCFG_READ(this_phy); + phy_control |= SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD); + SCU_SAS_PCFG_WRITE(this_phy, phy_control); + + sci_base_state_machine_change_state( + &this_phy->starting_substate_machine, + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_SPEED_EN + ); + + this_phy->protocol = SCIC_SDS_PHY_PROTOCOL_SAS; +} + +/** + * + * @this_phy: The phy object that received a SATA SPINUP HOLD event + * + * This method continues the link training for the phy as if it were a SATA PHY + * instead of a SAS PHY. This is done because the completion queue had a SATA + * SPINUP HOLD event when the state machine was expecting a SAS PHY event. none + */ +static void scic_sds_phy_start_sata_link_training( + struct scic_sds_phy *this_phy) +{ + sci_base_state_machine_change_state( + &this_phy->starting_substate_machine, + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER + ); + + this_phy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA; +} + +/** + * This method performs processing common to all protocols upon completion of + * link training. + * @this_phy: This parameter specifies the phy object for which link training + * has completed. + * @max_link_rate: This parameter specifies the maximum link rate to be + * associated with this phy. + * @next_state: This parameter specifies the next state for the phy's starting + * sub-state machine. + * + */ +static void scic_sds_phy_complete_link_training( + struct scic_sds_phy *this_phy, + enum sci_sas_link_rate max_link_rate, + u32 next_state) +{ + this_phy->max_negotiated_speed = max_link_rate; + + sci_base_state_machine_change_state( + scic_sds_phy_get_starting_substate_machine(this_phy), next_state + ); +} + +/** + * + * @this_phy: The struct scic_sds_phy object to restart. + * + * This method restarts the struct scic_sds_phy objects base state machine in the + * starting state from any starting substate. none + */ +static void scic_sds_phy_restart_starting_state( + struct scic_sds_phy *this_phy) +{ + /* Stop the current substate machine */ + sci_base_state_machine_stop( + scic_sds_phy_get_starting_substate_machine(this_phy) + ); + + /* Re-enter the base state machine starting state */ + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(this_phy), + SCI_BASE_PHY_STATE_STARTING + ); +} + +/* + * ***************************************************************************** + * * SCIC SDS PHY EVENT_HANDLERS + * ***************************************************************************** */ + +/** + * + * @phy: This struct scic_sds_phy object which has received an event. + * @event_code: This is the event code which the phy object is to decode. + * + * This method is called when an event notification is received for the phy + * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SPEED_EN. - + * decode the event - sas phy detected causes a state transition to the wait + * for speed event notification. - any other events log a warning message and + * set a failure status enum sci_status SCI_SUCCESS on any valid event notification + * SCI_FAILURE on any unexpected event notifation + */ +static enum sci_status scic_sds_phy_starting_substate_await_ossp_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + u32 result = SCI_SUCCESS; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_SAS_PHY_DETECTED: + scic_sds_phy_start_sas_link_training(this_phy); + this_phy->is_in_link_training = true; + break; + + case SCU_EVENT_SATA_SPINUP_HOLD: + scic_sds_phy_start_sata_link_training(this_phy); + this_phy->is_in_link_training = true; + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received " + "unexpected event_code %x\n", + __func__, + event_code); + + result = SCI_FAILURE; + break; + } + + return result; +} + +/** + * + * @phy: This struct scic_sds_phy object which has received an event. + * @event_code: This is the event code which the phy object is to decode. + * + * This method is called when an event notification is received for the phy + * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SPEED_EN. - + * decode the event - sas phy detected returns us back to this state. - speed + * event detected causes a state transition to the wait for iaf. - identify + * timeout is an un-expected event and the state machine is restarted. - link + * failure events restart the starting state machine - any other events log a + * warning message and set a failure status enum sci_status SCI_SUCCESS on any valid + * event notification SCI_FAILURE on any unexpected event notifation + */ +static enum sci_status scic_sds_phy_starting_substate_await_sas_phy_speed_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + u32 result = SCI_SUCCESS; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_SAS_PHY_DETECTED: + /* + * Why is this being reported again by the controller? + * We would re-enter this state so just stay here */ + break; + + case SCU_EVENT_SAS_15: + case SCU_EVENT_SAS_15_SSC: + scic_sds_phy_complete_link_training( + this_phy, SCI_SAS_150_GB, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF + ); + break; + + case SCU_EVENT_SAS_30: + case SCU_EVENT_SAS_30_SSC: + scic_sds_phy_complete_link_training( + this_phy, SCI_SAS_300_GB, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF + ); + break; + + case SCU_EVENT_SAS_60: + case SCU_EVENT_SAS_60_SSC: + scic_sds_phy_complete_link_training( + this_phy, SCI_SAS_600_GB, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF + ); + break; + + case SCU_EVENT_SATA_SPINUP_HOLD: + /* + * We were doing SAS PHY link training and received a SATA PHY event + * continue OOB/SN as if this were a SATA PHY */ + scic_sds_phy_start_sata_link_training(this_phy); + break; + + case SCU_EVENT_LINK_FAILURE: + /* Link failure change state back to the starting state */ + scic_sds_phy_restart_starting_state(this_phy); + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received " + "unexpected event_code %x\n", + __func__, + event_code); + + result = SCI_FAILURE; + break; + } + + return result; +} + +/** + * + * @phy: This struct scic_sds_phy object which has received an event. + * @event_code: This is the event code which the phy object is to decode. + * + * This method is called when an event notification is received for the phy + * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF. - + * decode the event - sas phy detected event backs up the state machine to the + * await speed notification. - identify timeout is an un-expected event and the + * state machine is restarted. - link failure events restart the starting state + * machine - any other events log a warning message and set a failure status + * enum sci_status SCI_SUCCESS on any valid event notification SCI_FAILURE on any + * unexpected event notifation + */ +static enum sci_status scic_sds_phy_starting_substate_await_iaf_uf_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + u32 result = SCI_SUCCESS; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_SAS_PHY_DETECTED: + /* Backup the state machine */ + scic_sds_phy_start_sas_link_training(this_phy); + break; + + case SCU_EVENT_SATA_SPINUP_HOLD: + /* + * We were doing SAS PHY link training and received a SATA PHY event + * continue OOB/SN as if this were a SATA PHY */ + scic_sds_phy_start_sata_link_training(this_phy); + break; + + case SCU_EVENT_RECEIVED_IDENTIFY_TIMEOUT: + case SCU_EVENT_LINK_FAILURE: + case SCU_EVENT_HARD_RESET_RECEIVED: + /* Start the oob/sn state machine over again */ + scic_sds_phy_restart_starting_state(this_phy); + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received " + "unexpected event_code %x\n", + __func__, + event_code); + + result = SCI_FAILURE; + break; + } + + return result; +} + +/** + * + * @phy: This struct scic_sds_phy object which has received an event. + * @event_code: This is the event code which the phy object is to decode. + * + * This method is called when an event notification is received for the phy + * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_POWER. - + * decode the event - link failure events restart the starting state machine - + * any other events log a warning message and set a failure status enum sci_status + * SCI_SUCCESS on a link failure event SCI_FAILURE on any unexpected event + * notifation + */ +static enum sci_status scic_sds_phy_starting_substate_await_sas_power_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + u32 result = SCI_SUCCESS; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_LINK_FAILURE: + /* Link failure change state back to the starting state */ + scic_sds_phy_restart_starting_state(this_phy); + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received unexpected " + "event_code %x\n", + __func__, + event_code); + + result = SCI_FAILURE; + break; + } + + return result; +} + +/** + * + * @phy: This struct scic_sds_phy object which has received an event. + * @event_code: This is the event code which the phy object is to decode. + * + * This method is called when an event notification is received for the phy + * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER. - + * decode the event - link failure events restart the starting state machine - + * sata spinup hold events are ignored since they are expected - any other + * events log a warning message and set a failure status enum sci_status SCI_SUCCESS + * on a link failure event SCI_FAILURE on any unexpected event notifation + */ +static enum sci_status scic_sds_phy_starting_substate_await_sata_power_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + u32 result = SCI_SUCCESS; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_LINK_FAILURE: + /* Link failure change state back to the starting state */ + scic_sds_phy_restart_starting_state(this_phy); + break; + + case SCU_EVENT_SATA_SPINUP_HOLD: + /* These events are received every 10ms and are expected while in this state */ + break; + + case SCU_EVENT_SAS_PHY_DETECTED: + /* + * There has been a change in the phy type before OOB/SN for the + * SATA finished start down the SAS link traning path. */ + scic_sds_phy_start_sas_link_training(this_phy); + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received " + "unexpected event_code %x\n", + __func__, + event_code); + + result = SCI_FAILURE; + break; + } + + return result; +} + +/** + * + * @phy: This struct scic_sds_phy object which has received an event. + * @event_code: This is the event code which the phy object is to decode. + * + * This method is called when an event notification is received for the phy + * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN. - + * decode the event - link failure events restart the starting state machine - + * sata spinup hold events are ignored since they are expected - sata phy + * detected event change to the wait speed event - any other events log a + * warning message and set a failure status enum sci_status SCI_SUCCESS on a link + * failure event SCI_FAILURE on any unexpected event notifation + */ +static enum sci_status scic_sds_phy_starting_substate_await_sata_phy_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + u32 result = SCI_SUCCESS; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_LINK_FAILURE: + /* Link failure change state back to the starting state */ + scic_sds_phy_restart_starting_state(this_phy); + break; + + case SCU_EVENT_SATA_SPINUP_HOLD: + /* + * These events might be received since we dont know how many may be in + * the completion queue while waiting for power */ + break; + + case SCU_EVENT_SATA_PHY_DETECTED: + this_phy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA; + + /* We have received the SATA PHY notification change state */ + sci_base_state_machine_change_state( + scic_sds_phy_get_starting_substate_machine(this_phy), + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN + ); + break; + + case SCU_EVENT_SAS_PHY_DETECTED: + /* + * There has been a change in the phy type before OOB/SN for the + * SATA finished start down the SAS link traning path. */ + scic_sds_phy_start_sas_link_training(this_phy); + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received " + "unexpected event_code %x\n", + __func__, + event_code); + + result = SCI_FAILURE; + break; + } + + return result; +} + +/** + * + * @phy: This struct scic_sds_phy object which has received an event. + * @event_code: This is the event code which the phy object is to decode. + * + * This method is called when an event notification is received for the phy + * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN. + * - decode the event - sata phy detected returns us back to this state. - + * speed event detected causes a state transition to the wait for signature. - + * link failure events restart the starting state machine - any other events + * log a warning message and set a failure status enum sci_status SCI_SUCCESS on any + * valid event notification SCI_FAILURE on any unexpected event notifation + */ +static enum sci_status scic_sds_phy_starting_substate_await_sata_speed_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + u32 result = SCI_SUCCESS; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_SATA_PHY_DETECTED: + /* + * The hardware reports multiple SATA PHY detected events + * ignore the extras */ + break; + + case SCU_EVENT_SATA_15: + case SCU_EVENT_SATA_15_SSC: + scic_sds_phy_complete_link_training( + this_phy, + SCI_SAS_150_GB, + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF + ); + break; + + case SCU_EVENT_SATA_30: + case SCU_EVENT_SATA_30_SSC: + scic_sds_phy_complete_link_training( + this_phy, + SCI_SAS_300_GB, + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF + ); + break; + + case SCU_EVENT_SATA_60: + case SCU_EVENT_SATA_60_SSC: + scic_sds_phy_complete_link_training( + this_phy, + SCI_SAS_600_GB, + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF + ); + break; + + case SCU_EVENT_LINK_FAILURE: + /* Link failure change state back to the starting state */ + scic_sds_phy_restart_starting_state(this_phy); + break; + + case SCU_EVENT_SAS_PHY_DETECTED: + /* + * There has been a change in the phy type before OOB/SN for the + * SATA finished start down the SAS link traning path. */ + scic_sds_phy_start_sas_link_training(this_phy); + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received " + "unexpected event_code %x\n", + __func__, + event_code); + + result = SCI_FAILURE; + break; + } + + return result; +} + +/** + * + * @phy: This struct scic_sds_phy object which has received an event. + * @event_code: This is the event code which the phy object is to decode. + * + * This method is called when an event notification is received for the phy + * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF. - + * decode the event - sas phy detected event backs up the state machine to the + * await speed notification. - identify timeout is an un-expected event and the + * state machine is restarted. - link failure events restart the starting state + * machine - any other events log a warning message and set a failure status + * enum sci_status SCI_SUCCESS on any valid event notification SCI_FAILURE on any + * unexpected event notifation + */ +static enum sci_status scic_sds_phy_starting_substate_await_sig_fis_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + u32 result = SCI_SUCCESS; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_SATA_PHY_DETECTED: + /* Backup the state machine */ + sci_base_state_machine_change_state( + scic_sds_phy_get_starting_substate_machine(this_phy), + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN + ); + break; + + case SCU_EVENT_LINK_FAILURE: + /* Link failure change state back to the starting state */ + scic_sds_phy_restart_starting_state(this_phy); + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received " + "unexpected event_code %x\n", + __func__, + event_code); + + result = SCI_FAILURE; + break; + } + + 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 *this_phy, + u32 frame_index) +{ + enum sci_status result; + u32 *frame_words; + struct sci_sas_identify_address_frame *identify_frame; + + result = scic_sds_unsolicited_frame_control_get_header( + &(scic_sds_phy_get_controller(this_phy)->uf_control), + frame_index, + (void **)&frame_words); + + if (result != SCI_SUCCESS) { + return result; + } + + frame_words[0] = SCIC_SWAP_DWORD(frame_words[0]); + identify_frame = (struct sci_sas_identify_address_frame *)frame_words; + + if (identify_frame->address_frame_type == 0) { + /* + * Byte swap the rest of the frame so we can make + * a copy of the buffer */ + frame_words[1] = SCIC_SWAP_DWORD(frame_words[1]); + frame_words[2] = SCIC_SWAP_DWORD(frame_words[2]); + frame_words[3] = SCIC_SWAP_DWORD(frame_words[3]); + frame_words[4] = SCIC_SWAP_DWORD(frame_words[4]); + frame_words[5] = SCIC_SWAP_DWORD(frame_words[5]); + + memcpy( + &this_phy->phy_type.sas.identify_address_frame_buffer, + identify_frame, + sizeof(struct sci_sas_identify_address_frame) + ); + + if (identify_frame->protocols.u.bits.smp_target) { + /* + * We got the IAF for an expander PHY go to the final state since + * there are no power requirements for expander phys. */ + sci_base_state_machine_change_state( + scic_sds_phy_get_starting_substate_machine(this_phy), + SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL + ); + } else { + /* We got the IAF we can now go to the await spinup semaphore state */ + sci_base_state_machine_change_state( + scic_sds_phy_get_starting_substate_machine(this_phy), + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER + ); + } + + result = SCI_SUCCESS; + } else + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received " + "unexpected frame id %x\n", + __func__, + frame_index); + + /* Regardless of the result release this frame since we are done with it */ + scic_sds_controller_release_frame( + scic_sds_phy_get_controller(this_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 *this_phy, + u32 frame_index) +{ + enum sci_status result; + u32 *frame_words; + struct sata_fis_header *fis_frame_header; + u32 *fis_frame_data; + + result = scic_sds_unsolicited_frame_control_get_header( + &(scic_sds_phy_get_controller(this_phy)->uf_control), + frame_index, + (void **)&frame_words); + + if (result != SCI_SUCCESS) { + return result; + } + + fis_frame_header = (struct sata_fis_header *)frame_words; + + if ( + (fis_frame_header->fis_type == SATA_FIS_TYPE_REGD2H) + && !(fis_frame_header->status & ATA_STATUS_REG_BSY_BIT) + ) { + scic_sds_unsolicited_frame_control_get_buffer( + &(scic_sds_phy_get_controller(this_phy)->uf_control), + frame_index, + (void **)&fis_frame_data + ); + + scic_sds_controller_copy_sata_response( + &this_phy->phy_type.sata.signature_fis_buffer, + frame_words, + fis_frame_data + ); + + /* We got the IAF we can now go to the await spinup semaphore state */ + sci_base_state_machine_change_state( + scic_sds_phy_get_starting_substate_machine(this_phy), + SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL + ); + + result = SCI_SUCCESS; + } else + dev_warn(sciphy_to_dev(this_phy), + "%s: PHY starting substate machine received " + "unexpected frame id %x\n", + __func__, + frame_index); + + /* Regardless of the result release this frame since we are done with it */ + scic_sds_controller_release_frame( + scic_sds_phy_get_controller(this_phy), frame_index + ); + + return result; +} + +/* + * ***************************************************************************** + * * SCIC SDS PHY POWER_HANDLERS + * ***************************************************************************** */ + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * 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 + * - The phy state machine is transitioned to the + * SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL. enum sci_status SCI_SUCCESS + */ +static enum sci_status scic_sds_phy_starting_substate_await_sas_power_consume_power_handler( + struct scic_sds_phy *this_phy) +{ + u32 enable_spinup; + + enable_spinup = SCU_SAS_ENSPINUP_READ(this_phy); + enable_spinup |= SCU_ENSPINUP_GEN_BIT(ENABLE); + SCU_SAS_ENSPINUP_WRITE(this_phy, enable_spinup); + + /* Change state to the final state this substate machine has run to completion */ + sci_base_state_machine_change_state( + scic_sds_phy_get_starting_substate_machine(this_phy), + SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL + ); + + return SCI_SUCCESS; +} + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This method is called by the struct scic_sds_controller when the phy object is + * granted power. - The phy state machine is transitioned to the + * SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN. enum sci_status SCI_SUCCESS + */ +static enum sci_status scic_sds_phy_starting_substate_await_sata_power_consume_power_handler( + struct scic_sds_phy *this_phy) +{ + u32 scu_sas_pcfg_value; + + /* Release the spinup hold state and reset the OOB state machine */ + scu_sas_pcfg_value = SCU_SAS_PCFG_READ(this_phy); + scu_sas_pcfg_value &= + ~(SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD) | SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE)); + scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_RESET); + SCU_SAS_PCFG_WRITE(this_phy, scu_sas_pcfg_value); + + /* Now restart the OOB operation */ + scu_sas_pcfg_value &= ~SCU_SAS_PCFG_GEN_BIT(OOB_RESET); + scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE); + SCU_SAS_PCFG_WRITE(this_phy, scu_sas_pcfg_value); + + /* Change state to the final state this substate machine has run to completion */ + sci_base_state_machine_change_state( + scic_sds_phy_get_starting_substate_machine(this_phy), + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN + ); + + return SCI_SUCCESS; +} + +/* --------------------------------------------------------------------------- */ + +struct scic_sds_phy_state_handler +scic_sds_phy_starting_substate_handler_table[SCIC_SDS_PHY_STARTING_MAX_SUBSTATES] = +{ + /* SCIC_SDS_PHY_STARTING_SUBSTATE_INITIAL */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_default_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_OSSP_EN */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_starting_substate_await_ossp_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_SPEED_EN */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_starting_substate_await_sas_phy_speed_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_starting_substate_await_iaf_uf_frame_handler, + scic_sds_phy_starting_substate_await_iaf_uf_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_starting_substate_await_sas_power_event_handler, + scic_sds_phy_starting_substate_await_sas_power_consume_power_handler + }, + /* SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER, */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_starting_substate_await_sata_power_event_handler, + scic_sds_phy_starting_substate_await_sata_power_consume_power_handler + }, + /* SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN, */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_starting_substate_await_sata_phy_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN, */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_starting_substate_await_sata_speed_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF, */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_starting_substate_await_sig_fis_frame_handler, + scic_sds_phy_starting_substate_await_sig_fis_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_default_event_handler, + scic_sds_phy_default_consume_power_handler + } +}; + +/** + * scic_sds_phy_set_starting_substate_handlers() - + * + * This macro sets the starting substate handlers by state_id + */ +#define scic_sds_phy_set_starting_substate_handlers(phy, state_id) \ + scic_sds_phy_set_state_handlers(\ + (phy), \ + &scic_sds_phy_starting_substate_handler_table[(state_id)] \ + ) + +/* + * **************************************************************************** + * * PHY STARTING SUBSTATE METHODS + * **************************************************************************** */ + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_INITIAL. - The initial state + * handlers are put in place for the struct scic_sds_phy object. - The state is + * changed to the wait phy type event notification. none + */ +static void scic_sds_phy_starting_initial_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_INITIAL); + + /* This is just an temporary state go off to the starting state */ + sci_base_state_machine_change_state( + scic_sds_phy_get_starting_substate_machine(this_phy), + SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_OSSP_EN + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_PHY_TYPE_EN. - Set the + * struct scic_sds_phy object state handlers for this state. none + */ +static void scic_sds_phy_starting_await_ossp_en_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_OSSP_EN + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SPEED_EN. - Set the + * struct scic_sds_phy object state handlers for this state. none + */ +static void scic_sds_phy_starting_await_sas_speed_en_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_SPEED_EN + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF. - Set the + * struct scic_sds_phy object state handlers for this state. none + */ +static void scic_sds_phy_starting_await_iaf_uf_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER. - Set the + * struct scic_sds_phy object state handlers for this state. - Add this phy object to + * the power control queue none + */ +static void scic_sds_phy_starting_await_sas_power_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER + ); + + scic_sds_controller_power_control_queue_insert( + scic_sds_phy_get_controller(this_phy), + this_phy + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on exiting + * the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER. - Remove the + * struct scic_sds_phy object from the power control queue. none + */ +static void scic_sds_phy_starting_await_sas_power_substate_exit( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_controller_power_control_queue_remove( + scic_sds_phy_get_controller(this_phy), this_phy + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER. - Set the + * struct scic_sds_phy object state handlers for this state. - Add this phy object to + * the power control queue none + */ +static void scic_sds_phy_starting_await_sata_power_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER + ); + + scic_sds_controller_power_control_queue_insert( + scic_sds_phy_get_controller(this_phy), + this_phy + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on exiting + * the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER. - Remove the + * struct scic_sds_phy object from the power control queue. none + */ +static void scic_sds_phy_starting_await_sata_power_substate_exit( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_controller_power_control_queue_remove( + scic_sds_phy_get_controller(this_phy), + this_phy + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN. - Set the + * struct scic_sds_phy object state handlers for this state. none + */ +static void scic_sds_phy_starting_await_sata_phy_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN + ); + + scic_cb_timer_start( + scic_sds_phy_get_controller(this_phy), + this_phy->sata_timeout_timer, + SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on exiting + * the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN. - stop the timer + * that was started on entry to await sata phy event notification none + */ +static void scic_sds_phy_starting_await_sata_phy_substate_exit( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_cb_timer_stop( + scic_sds_phy_get_controller(this_phy), + this_phy->sata_timeout_timer + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN. - Set the + * struct scic_sds_phy object state handlers for this state. none + */ +static void scic_sds_phy_starting_await_sata_speed_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN + ); + + scic_cb_timer_start( + scic_sds_phy_get_controller(this_phy), + this_phy->sata_timeout_timer, + SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on exiting + * the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN. - stop the timer + * that was started on entry to await sata phy event notification none + */ +static void scic_sds_phy_starting_await_sata_speed_substate_exit( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_cb_timer_stop( + scic_sds_phy_get_controller(this_phy), + this_phy->sata_timeout_timer + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF. - Set the + * struct scic_sds_phy object state handlers for this state. - Start the SIGNATURE FIS + * timeout timer none + */ +static void scic_sds_phy_starting_await_sig_fis_uf_substate_enter( + struct sci_base_object *object) +{ + bool continue_to_ready_state; + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF + ); + + continue_to_ready_state = scic_sds_port_link_detected( + this_phy->owning_port, + this_phy + ); + + if (continue_to_ready_state) { + /* + * Clear the PE suspend condition so we can actually receive SIG FIS + * The hardware will not respond to the XRDY until the PE suspend + * condition is cleared. */ + scic_sds_phy_resume(this_phy); + + scic_cb_timer_start( + scic_sds_phy_get_controller(this_phy), + this_phy->sata_timeout_timer, + SCIC_SDS_SIGNATURE_FIS_TIMEOUT + ); + } else { + this_phy->is_in_link_training = false; + } +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on exiting + * the SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF. - Stop the SIGNATURE + * FIS timeout timer. none + */ +static void scic_sds_phy_starting_await_sig_fis_uf_substate_exit( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_cb_timer_stop( + scic_sds_phy_get_controller(this_phy), + this_phy->sata_timeout_timer + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL. - Set the struct scic_sds_phy + * object state handlers for this state. - Change base state machine to the + * ready state. none + */ +static void scic_sds_phy_starting_final_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_starting_substate_handlers( + this_phy, SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL + ); + + /* + * State machine has run to completion so exit out and change + * the base state machine to the ready state */ + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(this_phy), + SCI_BASE_PHY_STATE_READY); +} + +/* --------------------------------------------------------------------------- */ + +const struct sci_base_state scic_sds_phy_starting_substates[] = { + [SCIC_SDS_PHY_STARTING_SUBSTATE_INITIAL] = { + .enter_state = scic_sds_phy_starting_initial_substate_enter, + }, + [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_OSSP_EN] = { + .enter_state = scic_sds_phy_starting_await_ossp_en_substate_enter, + }, + [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_SPEED_EN] = { + .enter_state = scic_sds_phy_starting_await_sas_speed_en_substate_enter, + }, + [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF] = { + .enter_state = scic_sds_phy_starting_await_iaf_uf_substate_enter, + }, + [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER] = { + .enter_state = scic_sds_phy_starting_await_sas_power_substate_enter, + .exit_state = scic_sds_phy_starting_await_sas_power_substate_exit, + }, + [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER] = { + .enter_state = scic_sds_phy_starting_await_sata_power_substate_enter, + .exit_state = scic_sds_phy_starting_await_sata_power_substate_exit + }, + [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN] = { + .enter_state = scic_sds_phy_starting_await_sata_phy_substate_enter, + .exit_state = scic_sds_phy_starting_await_sata_phy_substate_exit + }, + [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN] = { + .enter_state = scic_sds_phy_starting_await_sata_speed_substate_enter, + .exit_state = scic_sds_phy_starting_await_sata_speed_substate_exit + }, + [SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF] = { + .enter_state = scic_sds_phy_starting_await_sig_fis_uf_substate_enter, + .exit_state = scic_sds_phy_starting_await_sig_fis_uf_substate_exit + }, + [SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL] = { + .enter_state = scic_sds_phy_starting_final_substate_enter, + } +}; + +/* + * *************************************************************************** + * * DEFAULT HANDLERS + * *************************************************************************** */ + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This is the default method for phy a start request. It will report a + * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE + */ +enum sci_status scic_sds_phy_default_start_handler( + struct sci_base_phy *phy) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)phy; + + dev_warn(sciphy_to_dev(this_phy), + "%s: SCIC Phy 0x%p requested to start from invalid " + "state %d\n", + __func__, + this_phy, + sci_base_state_machine_get_state( + &this_phy->parent.state_machine)); + + return SCI_FAILURE_INVALID_STATE; + +} + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This is the default method for phy a stop request. It will report a warning + * and exit. enum sci_status SCI_FAILURE_INVALID_STATE + */ +enum sci_status scic_sds_phy_default_stop_handler( + struct sci_base_phy *phy) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)phy; + + dev_warn(sciphy_to_dev(this_phy), + "%s: SCIC Phy 0x%p requested to stop from invalid " + "state %d\n", + __func__, + this_phy, + sci_base_state_machine_get_state( + &this_phy->parent.state_machine)); + + return SCI_FAILURE_INVALID_STATE; +} + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This is the default method for phy a reset request. It will report a + * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE + */ +enum sci_status scic_sds_phy_default_reset_handler( + struct sci_base_phy *phy) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)phy; + + dev_warn(sciphy_to_dev(this_phy), + "%s: SCIC Phy 0x%p requested to reset from invalid state " + "%d\n", + __func__, + this_phy, + sci_base_state_machine_get_state( + &this_phy->parent.state_machine)); + + return SCI_FAILURE_INVALID_STATE; +} + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This is the default method for phy a destruct request. It will report a + * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE + */ +enum sci_status scic_sds_phy_default_destroy_handler( + struct sci_base_phy *phy) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)phy; + + /* / @todo Implement something for the default */ + dev_warn(sciphy_to_dev(this_phy), + "%s: SCIC Phy 0x%p requested to destroy from invalid " + "state %d\n", + __func__, + this_phy, + sci_base_state_machine_get_state( + &this_phy->parent.state_machine)); + + return SCI_FAILURE_INVALID_STATE; +} + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * @frame_index: This is the frame index that was received from the SCU + * hardware. + * + * This is the default method for a phy frame handling request. It will report + * a warning, release the frame and exit. enum sci_status SCI_FAILURE_INVALID_STATE + */ +enum sci_status scic_sds_phy_default_frame_handler( + struct scic_sds_phy *this_phy, + u32 frame_index) +{ + dev_warn(sciphy_to_dev(this_phy), + "%s: SCIC Phy 0x%p received unexpected frame data %d " + "while in state %d\n", + __func__, + this_phy, + frame_index, + sci_base_state_machine_get_state( + &this_phy->parent.state_machine)); + + scic_sds_controller_release_frame( + scic_sds_phy_get_controller(this_phy), frame_index); + + return SCI_FAILURE_INVALID_STATE; +} + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * @event_code: This is the event code that was received from the SCU hardware. + * + * This is the default method for a phy event handler. It will report a + * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE + */ +enum sci_status scic_sds_phy_default_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + dev_warn(sciphy_to_dev(this_phy), + "%s: SCIC Phy 0x%p received unexpected event status %x " + "while in state %d\n", + __func__, + this_phy, + event_code, + sci_base_state_machine_get_state( + &this_phy->parent.state_machine)); + + return SCI_FAILURE_INVALID_STATE; +} + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This is the default method for a phy consume power handler. It will report + * a warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE + */ +enum sci_status scic_sds_phy_default_consume_power_handler( + struct scic_sds_phy *this_phy) +{ + dev_warn(sciphy_to_dev(this_phy), + "%s: SCIC Phy 0x%p given unexpected permission to consume " + "power while in state %d\n", + __func__, + this_phy, + sci_base_state_machine_get_state( + &this_phy->parent.state_machine)); + + return SCI_FAILURE_INVALID_STATE; +} + +/* + * ****************************************************************************** + * * PHY STOPPED STATE HANDLERS + * ****************************************************************************** */ + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This method takes the struct scic_sds_phy from a stopped state and attempts to + * start it. - The phy state machine is transitioned to the + * SCI_BASE_PHY_STATE_STARTING. enum sci_status SCI_SUCCESS + */ +static enum sci_status scic_sds_phy_stopped_state_start_handler( + struct sci_base_phy *phy) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)phy; + + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(this_phy), + SCI_BASE_PHY_STATE_STARTING + ); + + return SCI_SUCCESS; +} + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This method takes the struct scic_sds_phy from a stopped state and destroys it. - + * This function takes no action. Shouldnt this function transition the + * struct sci_base_phy::state_machine to the SCI_BASE_PHY_STATE_FINAL? enum sci_status + * SCI_SUCCESS + */ +static enum sci_status scic_sds_phy_stopped_state_destroy_handler( + struct sci_base_phy *phy) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)phy; + + /* / @todo what do we actually need to do here? */ + return SCI_SUCCESS; +} + +/* + * ****************************************************************************** + * * PHY STARTING STATE HANDLERS + * ****************************************************************************** */ + +/* All of these state handlers are mapped to the starting sub-state machine */ + +/* + * ****************************************************************************** + * * PHY READY STATE HANDLERS + * ****************************************************************************** */ + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This method takes the struct scic_sds_phy from a ready state and attempts to stop + * it. - The phy state machine is transitioned to the + * SCI_BASE_PHY_STATE_STOPPED. enum sci_status SCI_SUCCESS + */ +static enum sci_status scic_sds_phy_ready_state_stop_handler( + struct sci_base_phy *phy) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)phy; + + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(this_phy), + SCI_BASE_PHY_STATE_STOPPED + ); + + return SCI_SUCCESS; +} + +/** + * + * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy + * object. + * + * This method takes the struct scic_sds_phy from a ready state and attempts to reset + * it. - The phy state machine is transitioned to the + * SCI_BASE_PHY_STATE_STARTING. enum sci_status SCI_SUCCESS + */ +static enum sci_status scic_sds_phy_ready_state_reset_handler( + struct sci_base_phy *phy) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)phy; + + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(this_phy), + SCI_BASE_PHY_STATE_RESETTING + ); + + return SCI_SUCCESS; +} + +/** + * + * @phy: This is the struct scic_sds_phy object which has received the event. + * + * This method request the struct scic_sds_phy handle the received event. The only + * event that we are interested in while in the ready state is the link failure + * event. - decoded event is a link failure - transition the struct scic_sds_phy back + * to the SCI_BASE_PHY_STATE_STARTING state. - any other event recived will + * report a warning message enum sci_status SCI_SUCCESS if the event received is a + * link failure SCI_FAILURE_INVALID_STATE for any other event received. + */ +static enum sci_status scic_sds_phy_ready_state_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + enum sci_status result = SCI_FAILURE; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_LINK_FAILURE: + /* Link failure change state back to the starting state */ + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(this_phy), + SCI_BASE_PHY_STATE_STARTING + ); + + result = SCI_SUCCESS; + break; + + case SCU_EVENT_BROADCAST_CHANGE: + /* Broadcast change received. Notify the port. */ + if (scic_sds_phy_get_port(this_phy) != SCI_INVALID_HANDLE) + scic_sds_port_broadcast_change_received(this_phy->owning_port, this_phy); + else + this_phy->bcn_received_while_port_unassigned = true; + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%sP SCIC PHY 0x%p ready state machine received " + "unexpected event_code %x\n", + __func__, + this_phy, + event_code); + + result = SCI_FAILURE_INVALID_STATE; + break; + } + + return result; +} + +/* --------------------------------------------------------------------------- */ + +/** + * + * @this_phy: This is the struct scic_sds_phy object which is receiving the event. + * @event_code: This is the event code to be processed. + * + * This is the resetting state event handler. enum sci_status + * SCI_FAILURE_INVALID_STATE + */ +static enum sci_status scic_sds_phy_resetting_state_event_handler( + struct scic_sds_phy *this_phy, + u32 event_code) +{ + enum sci_status result = SCI_FAILURE; + + switch (scu_get_event_code(event_code)) { + case SCU_EVENT_HARD_RESET_TRANSMITTED: + /* Link failure change state back to the starting state */ + sci_base_state_machine_change_state( + scic_sds_phy_get_base_state_machine(this_phy), + SCI_BASE_PHY_STATE_STARTING + ); + + result = SCI_SUCCESS; + break; + + default: + dev_warn(sciphy_to_dev(this_phy), + "%s: SCIC PHY 0x%p resetting state machine received " + "unexpected event_code %x\n", + __func__, + this_phy, + event_code); + + result = SCI_FAILURE_INVALID_STATE; + break; + } + + return result; +} + +/* --------------------------------------------------------------------------- */ + +struct scic_sds_phy_state_handler +scic_sds_phy_state_handler_table[SCI_BASE_PHY_MAX_STATES] = +{ + /* SCI_BASE_PHY_STATE_INITIAL */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_default_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCI_BASE_PHY_STATE_STOPPED */ + { + { + scic_sds_phy_stopped_state_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_stopped_state_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_default_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCI_BASE_PHY_STATE_STARTING */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_default_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCI_BASE_PHY_STATE_READY */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_ready_state_stop_handler, + scic_sds_phy_ready_state_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_ready_state_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCI_BASE_PHY_STATE_RESETTING */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_resetting_state_event_handler, + scic_sds_phy_default_consume_power_handler + }, + /* SCI_BASE_PHY_STATE_FINAL */ + { + { + scic_sds_phy_default_start_handler, + scic_sds_phy_default_stop_handler, + scic_sds_phy_default_reset_handler, + scic_sds_phy_default_destroy_handler + }, + scic_sds_phy_default_frame_handler, + scic_sds_phy_default_event_handler, + scic_sds_phy_default_consume_power_handler + } +}; + +/* + * **************************************************************************** + * * PHY STATE PRIVATE METHODS + * **************************************************************************** */ + +/** + * + * @this_phy: This is the struct scic_sds_phy object to stop. + * + * This method will stop the struct scic_sds_phy object. This does not reset the + * protocol engine it just suspends it and places it in a state where it will + * not cause the end device to power up. none + */ +static void scu_link_layer_stop_protocol_engine( + struct scic_sds_phy *this_phy) +{ + u32 scu_sas_pcfg_value; + u32 enable_spinup_value; + + /* Suspend the protocol engine and place it in a sata spinup hold state */ + scu_sas_pcfg_value = SCU_SAS_PCFG_READ(this_phy); + scu_sas_pcfg_value |= ( + SCU_SAS_PCFG_GEN_BIT(OOB_RESET) + | SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE) + | SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD) + ); + SCU_SAS_PCFG_WRITE(this_phy, scu_sas_pcfg_value); + + /* Disable the notify enable spinup primitives */ + enable_spinup_value = SCU_SAS_ENSPINUP_READ(this_phy); + enable_spinup_value &= ~SCU_ENSPINUP_GEN_BIT(ENABLE); + SCU_SAS_ENSPINUP_WRITE(this_phy, enable_spinup_value); +} + +/** + * + * + * This method will start the OOB/SN state machine for this struct scic_sds_phy object. + */ +static void scu_link_layer_start_oob( + struct scic_sds_phy *this_phy) +{ + u32 scu_sas_pcfg_value; + + scu_sas_pcfg_value = SCU_SAS_PCFG_READ(this_phy); + scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE); + scu_sas_pcfg_value &= + ~(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) | SCU_SAS_PCFG_GEN_BIT(HARD_RESET)); + + SCU_SAS_PCFG_WRITE(this_phy, scu_sas_pcfg_value); +} + +/** + * + * + * This method will transmit a hard reset request on the specified phy. The SCU + * hardware requires that we reset the OOB state machine and set the hard reset + * bit in the phy configuration register. We then must start OOB over with the + * hard reset bit set. + */ +static void scu_link_layer_tx_hard_reset( + struct scic_sds_phy *this_phy) +{ + u32 phy_configuration_value; + + /* + * SAS Phys must wait for the HARD_RESET_TX event notification to transition + * to the starting state. */ + phy_configuration_value = SCU_SAS_PCFG_READ(this_phy); + phy_configuration_value |= + (SCU_SAS_PCFG_GEN_BIT(HARD_RESET) | SCU_SAS_PCFG_GEN_BIT(OOB_RESET)); + SCU_SAS_PCFG_WRITE(this_phy, phy_configuration_value); + + /* Now take the OOB state machine out of reset */ + phy_configuration_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE); + phy_configuration_value &= ~SCU_SAS_PCFG_GEN_BIT(OOB_RESET); + SCU_SAS_PCFG_WRITE(this_phy, phy_configuration_value); +} + +/* + * **************************************************************************** + * * PHY BASE STATE METHODS + * **************************************************************************** */ + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCI_BASE_PHY_STATE_INITIAL. - This function sets the state + * handlers for the phy object base state machine initial state. none + */ +static void scic_sds_phy_initial_state_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_base_state_handlers(this_phy, SCI_BASE_PHY_STATE_STOPPED); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCI_BASE_PHY_STATE_INITIAL. - This function sets the state + * handlers for the phy object base state machine initial state. - The SCU + * hardware is requested to stop the protocol engine. none + */ +static void scic_sds_phy_stopped_state_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + /* / @todo We need to get to the controller to place this PE in a reset state */ + + scic_sds_phy_set_base_state_handlers(this_phy, SCI_BASE_PHY_STATE_STOPPED); + + scu_link_layer_stop_protocol_engine(this_phy); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCI_BASE_PHY_STATE_STARTING. - This function sets the state + * handlers for the phy object base state machine starting state. - The SCU + * hardware is requested to start OOB/SN on this protocl engine. - The phy + * starting substate machine is started. - If the previous state was the ready + * state then the struct scic_sds_controller is informed that the phy has gone link + * down. none + */ +static void scic_sds_phy_starting_state_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_base_state_handlers(this_phy, SCI_BASE_PHY_STATE_STARTING); + + scu_link_layer_stop_protocol_engine(this_phy); + scu_link_layer_start_oob(this_phy); + + /* We don't know what kind of phy we are going to be just yet */ + this_phy->protocol = SCIC_SDS_PHY_PROTOCOL_UNKNOWN; + this_phy->bcn_received_while_port_unassigned = false; + + /* Change over to the starting substate machine to continue */ + sci_base_state_machine_start(&this_phy->starting_substate_machine); + + if (this_phy->parent.state_machine.previous_state_id + == SCI_BASE_PHY_STATE_READY) { + scic_sds_controller_link_down( + scic_sds_phy_get_controller(this_phy), + scic_sds_phy_get_port(this_phy), + this_phy + ); + } +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCI_BASE_PHY_STATE_READY. - This function sets the state + * handlers for the phy object base state machine ready state. - The SCU + * hardware protocol engine is resumed. - The struct scic_sds_controller is informed + * that the phy object has gone link up. none + */ +static void scic_sds_phy_ready_state_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_base_state_handlers(this_phy, SCI_BASE_PHY_STATE_READY); + + scic_sds_controller_link_up( + scic_sds_phy_get_controller(this_phy), + scic_sds_phy_get_port(this_phy), + this_phy + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on exiting + * the SCI_BASE_PHY_STATE_INITIAL. This function suspends the SCU hardware + * protocol engine represented by this struct scic_sds_phy object. none + */ +static void scic_sds_phy_ready_state_exit( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_suspend(this_phy); +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCI_BASE_PHY_STATE_RESETTING. - This function sets the state + * handlers for the phy object base state machine resetting state. none + */ +static void scic_sds_phy_resetting_state_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_base_state_handlers(this_phy, SCI_BASE_PHY_STATE_RESETTING); + + /* + * The phy is being reset, therefore deactivate it from the port. + * In the resetting state we don't notify the user regarding + * link up and link down notifications. */ + scic_sds_port_deactivate_phy(this_phy->owning_port, this_phy, false); + + if (this_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) { + scu_link_layer_tx_hard_reset(this_phy); + } else { + /* + * The SCU does not need to have a descrete reset state so just go back to + * the starting state. */ + sci_base_state_machine_change_state( + &this_phy->parent.state_machine, + SCI_BASE_PHY_STATE_STARTING + ); + } +} + +/** + * + * @object: This is the struct sci_base_object which is cast to a struct scic_sds_phy object. + * + * This method will perform the actions required by the struct scic_sds_phy on + * entering the SCI_BASE_PHY_STATE_FINAL. - This function sets the state + * handlers for the phy object base state machine final state. none + */ +static void scic_sds_phy_final_state_enter( + struct sci_base_object *object) +{ + struct scic_sds_phy *this_phy; + + this_phy = (struct scic_sds_phy *)object; + + scic_sds_phy_set_base_state_handlers(this_phy, SCI_BASE_PHY_STATE_FINAL); + + /* Nothing to do here */ +} + +/* --------------------------------------------------------------------------- */ + +const struct sci_base_state scic_sds_phy_state_table[] = { + [SCI_BASE_PHY_STATE_INITIAL] = { + .enter_state = scic_sds_phy_initial_state_enter, + }, + [SCI_BASE_PHY_STATE_STOPPED] = { + .enter_state = scic_sds_phy_stopped_state_enter, + }, + [SCI_BASE_PHY_STATE_STARTING] = { + .enter_state = scic_sds_phy_starting_state_enter, + }, + [SCI_BASE_PHY_STATE_READY] = { + .enter_state = scic_sds_phy_ready_state_enter, + .exit_state = scic_sds_phy_ready_state_exit, + }, + [SCI_BASE_PHY_STATE_RESETTING] = { + .enter_state = scic_sds_phy_resetting_state_enter, + }, + [SCI_BASE_PHY_STATE_FINAL] = { + .enter_state = scic_sds_phy_final_state_enter, + }, +}; + |