/* * 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.
*/ #ifndef _ISCI_PHY_H_ #define _ISCI_PHY_H_
/* This is the timeout value for the SATA phy to wait for a SIGNATURE FIS * before restarting the starting state machine. Technically, the old parallel * ATA specification required up to 30 seconds for a device to issue its * signature FIS as a result of a soft reset. Now we see that devices respond * generally within 15 seconds, but we'll use 25 for now.
*/ #define SCIC_SDS_SIGNATURE_FIS_TIMEOUT 25000
/* This is the timeout for the SATA OOB/SN because the hardware does not * recognize a hot plug after OOB signal but before the SN signals. We need to * make sure after a hotplug timeout if we have not received the speed event * notification from the hardware that we restart the hardware OOB state * machine.
*/ #define SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT 250
/** * isci_phy - hba local phy infrastructure * @sm: * @protocol: attached device protocol * @phy_index: physical index relative to the controller (0-3) * @bcn_received_while_port_unassigned: bcn to report after port association * @sata_timer: timeout SATA signature FIS arrival
*/ struct isci_phy { struct sci_base_state_machine sm; struct isci_port *owning_port; enum sas_linkrate max_negotiated_speed; enum sas_protocol protocol;
u8 phy_index; bool bcn_received_while_port_unassigned; bool is_in_link_training; struct sci_timer sata_timer; struct scu_transport_layer_registers __iomem *transport_layer_registers; struct scu_link_layer_registers __iomem *link_layer_registers; struct asd_sas_phy sas_phy;
u8 sas_addr[SAS_ADDR_SIZE]; union { struct sas_identify_frame iaf; struct dev_to_host_fis fis;
} frame_rcvd;
};
struct sci_phy_cap { union { struct { /* * The SAS specification indicates the start bit shall * always be set to * 1. This implementation will have the start bit set * to 0 if the PHY CAPABILITIES were either not * received or speed negotiation failed.
*/
u8 start:1;
u8 tx_ssc_type:1;
u8 res1:2;
u8 req_logical_linkrate:4;
/* this data structure reflects the link layer transmit identification reg */ struct sci_phy_proto { union { struct {
u16 _r_a:1;
u16 smp_iport:1;
u16 stp_iport:1;
u16 ssp_iport:1;
u16 _r_b:4;
u16 _r_c:1;
u16 smp_tport:1;
u16 stp_tport:1;
u16 ssp_tport:1;
u16 _r_d:4;
};
u16 all;
};
} __packed;
/** * struct sci_phy_properties - This structure defines the properties common to * all phys that can be retrieved. * *
*/ struct sci_phy_properties { /** * This field specifies the port that currently contains the * supplied phy. This field may be set to NULL * if the phy is not currently contained in a port.
*/ struct isci_port *iport;
/** * This field specifies the link rate at which the phy is * currently operating.
*/ enum sas_linkrate negotiated_link_rate;
/** * This field specifies the index of the phy in relation to other * phys within the controller. This index is zero relative.
*/
u8 index;
};
/** * struct sci_sas_phy_properties - This structure defines the properties, * specific to a SAS phy, that can be retrieved. * *
*/ struct sci_sas_phy_properties { /** * This field delineates the Identify Address Frame received * from the remote end point.
*/ struct sas_identify_frame rcvd_iaf;
/** * This field delineates the Phy capabilities structure received * from the remote end point.
*/ struct sci_phy_cap rcvd_cap;
};
/** * struct sci_sata_phy_properties - This structure defines the properties, * specific to a SATA phy, that can be retrieved. * *
*/ struct sci_sata_phy_properties { /** * This field delineates the signature FIS received from the * attached target.
*/ struct dev_to_host_fis signature_fis;
/** * This field specifies to the user if a port selector is connected * on the specified phy.
*/ bool is_port_selector_present;
};
/** * enum sci_phy_counter_id - This enumeration depicts the various pieces of * optional information that can be retrieved for a specific phy. * *
*/ enum sci_phy_counter_id { /** * This PHY information field tracks the number of frames received.
*/
SCIC_PHY_COUNTER_RECEIVED_FRAME,
/** * This PHY information field tracks the number of frames transmitted.
*/
SCIC_PHY_COUNTER_TRANSMITTED_FRAME,
/** * This PHY information field tracks the number of DWORDs received.
*/
SCIC_PHY_COUNTER_RECEIVED_FRAME_WORD,
/** * This PHY information field tracks the number of DWORDs transmitted.
*/
SCIC_PHY_COUNTER_TRANSMITTED_FRAME_DWORD,
/** * This PHY information field tracks the number of times DWORD * synchronization was lost.
*/
SCIC_PHY_COUNTER_LOSS_OF_SYNC_ERROR,
/** * This PHY information field tracks the number of received DWORDs with * running disparity errors.
*/
SCIC_PHY_COUNTER_RECEIVED_DISPARITY_ERROR,
/** * This PHY information field tracks the number of received frames with a * CRC error (not including short or truncated frames).
*/
SCIC_PHY_COUNTER_RECEIVED_FRAME_CRC_ERROR,
/** * This PHY information field tracks the number of DONE (ACK/NAK TIMEOUT) * primitives received.
*/
SCIC_PHY_COUNTER_RECEIVED_DONE_ACK_NAK_TIMEOUT,
/** * This PHY information field tracks the number of DONE (ACK/NAK TIMEOUT) * primitives transmitted.
*/
SCIC_PHY_COUNTER_TRANSMITTED_DONE_ACK_NAK_TIMEOUT,
/** * This PHY information field tracks the number of times the inactivity * timer for connections on the phy has been utilized.
*/
SCIC_PHY_COUNTER_INACTIVITY_TIMER_EXPIRED,
/** * This PHY information field tracks the number of DONE (CREDIT TIMEOUT) * primitives received.
*/
SCIC_PHY_COUNTER_RECEIVED_DONE_CREDIT_TIMEOUT,
/** * This PHY information field tracks the number of DONE (CREDIT TIMEOUT) * primitives transmitted.
*/
SCIC_PHY_COUNTER_TRANSMITTED_DONE_CREDIT_TIMEOUT,
/** * This PHY information field tracks the number of CREDIT BLOCKED * primitives received. * @note Depending on remote device implementation, credit blocks * may occur regularly.
*/
SCIC_PHY_COUNTER_RECEIVED_CREDIT_BLOCKED,
/** * This PHY information field contains the number of short frames * received. A short frame is simply a frame smaller then what is * allowed by either the SAS or SATA specification.
*/
SCIC_PHY_COUNTER_RECEIVED_SHORT_FRAME,
/** * This PHY information field contains the number of frames received after * credit has been exhausted.
*/
SCIC_PHY_COUNTER_RECEIVED_FRAME_WITHOUT_CREDIT,
/** * This PHY information field contains the number of frames received after * a DONE has been received.
*/
SCIC_PHY_COUNTER_RECEIVED_FRAME_AFTER_DONE,
/** * This PHY information field contains the number of times the phy * failed to achieve DWORD synchronization during speed negotiation.
*/
SCIC_PHY_COUNTER_SN_DWORD_SYNC_ERROR
};
/** * enum sci_phy_states - phy state machine states * @SCI_PHY_INITIAL: Simply the initial state for the base domain state * machine. * @SCI_PHY_STOPPED: phy has successfully been stopped. In this state * no new IO operations are permitted on this phy. * @SCI_PHY_STARTING: the phy is in the process of becomming ready. In * this state no new IO operations are permitted on * this phy. * @SCI_PHY_SUB_INITIAL: Initial state * @SCI_PHY_SUB_AWAIT_OSSP_EN: Wait state for the hardware OSSP event * type notification * @SCI_PHY_SUB_AWAIT_SAS_SPEED_EN: Wait state for the PHY speed * notification * @SCI_PHY_SUB_AWAIT_IAF_UF: Wait state for the IAF Unsolicited frame * notification * @SCI_PHY_SUB_AWAIT_SAS_POWER: Wait state for the request to consume * power * @SCI_PHY_SUB_AWAIT_SATA_POWER: Wait state for request to consume * power * @SCI_PHY_SUB_AWAIT_SATA_PHY_EN: Wait state for the SATA PHY * notification * @SCI_PHY_SUB_AWAIT_SATA_SPEED_EN: Wait for the SATA PHY speed * notification * @SCI_PHY_SUB_AWAIT_SIG_FIS_UF: Wait state for the SIGNATURE FIS * unsolicited frame notification * @SCI_PHY_SUB_FINAL: Exit state for this state machine * @SCI_PHY_READY: phy is now ready. Thus, the user is able to perform * IO operations utilizing this phy as long as it is * currently part of a valid port. This state is * entered from the STARTING state. * @SCI_PHY_RESETTING: phy is in the process of being reset. In this * state no new IO operations are permitted on this * phy. This state is entered from the READY state. * @SCI_PHY_FINAL: Simply the final state for the base phy state * machine.
*/ #define PHY_STATES {\
C(PHY_INITIAL),\
C(PHY_STOPPED),\
C(PHY_STARTING),\
C(PHY_SUB_INITIAL),\
C(PHY_SUB_AWAIT_OSSP_EN),\
C(PHY_SUB_AWAIT_SAS_SPEED_EN),\
C(PHY_SUB_AWAIT_IAF_UF),\
C(PHY_SUB_AWAIT_SAS_POWER),\
C(PHY_SUB_AWAIT_SATA_POWER),\
C(PHY_SUB_AWAIT_SATA_PHY_EN),\
C(PHY_SUB_AWAIT_SATA_SPEED_EN),\
C(PHY_SUB_AWAIT_SIG_FIS_UF),\
C(PHY_SUB_FINAL),\
C(PHY_READY),\
C(PHY_RESETTING),\
C(PHY_FINAL),\
} #undef C #define C(a) SCI_##a enum sci_phy_states PHY_STATES; #undef C
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