Quelle port.h
Sprache: C
/*
* 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_PORT_H_
#define _ISCI_PORT_H_
#include <scsi/libsas.h>
#include "isci.h"
#include "sas.h"
#include "phy.h"
#define SCIC_SDS_DUMMY_PORT 0 xFF
#define PF_NOTIFY (1 << 0 )
#define PF_RESUME (1 << 1 )
struct isci_phy;
struct isci_host;
enum isci_status {
isci_freed = 0 x00,
isci_starting = 0 x01,
isci_ready = 0 x02,
isci_ready_for_io = 0 x03,
isci_stopping = 0 x04,
isci_stopped = 0 x05,
};
/**
* struct isci_port - isci direct attached sas port object
* @ ready_exit : several states constitute ' ready ' . When exiting ready we
* need to take extra port - teardown actions that are
* skipped when exiting to another ' ready ' state .
* @ logical_port_index : software port index
* @ physical_port_index : hardware port index
* @ active_phy_mask : identifies phy members
* @ enabled_phy_mask : phy mask for the port
* that are already part of the port
* @ reserved_tag :
* @ reserved_rni : reserver for port task scheduler workaround
* @ started_request_count : reference count for outstanding commands
* @ not_ready_reason : set during state transitions and notified
* @ timer : timeout start / stop operations
*/
struct isci_port {
struct isci_host *isci_host;
struct list_head remote_dev_list;
#define IPORT_RESET_PENDING 0
unsigned long state;
enum sci_status hard_reset_status;
struct sci_base_state_machine sm;
bool ready_exit;
u8 logical_port_index;
u8 physical_port_index;
u8 active_phy_mask;
u8 enabled_phy_mask;
u8 last_active_phy;
u16 reserved_rni;
u16 reserved_tag;
u32 started_request_count;
u32 assigned_device_count;
u32 hang_detect_users;
u32 not_ready_reason;
struct isci_phy *phy_table[SCI_MAX_PHYS];
struct isci_host *owning_controller;
struct sci_timer timer;
struct scu_port_task_scheduler_registers __iomem *port_task_scheduler_registers;
/* XXX rework: only one register, no need to replicate per-port */
u32 __iomem *port_pe_configuration_register;
struct scu_viit_entry __iomem *viit_registers;
};
enum sci_port_not_ready_reason_code {
SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS,
SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED,
SCIC_PORT_NOT_READY_INVALID_PORT_CONFIGURATION,
SCIC_PORT_NOT_READY_RECONFIGURING,
SCIC_PORT_NOT_READY_REASON_CODE_MAX
};
struct sci_port_end_point_properties {
struct sci_sas_address sas_address;
struct sci_phy_proto protocols;
};
struct sci_port_properties {
u32 index;
struct sci_port_end_point_properties local;
struct sci_port_end_point_properties remote;
u32 phy_mask;
};
/**
* enum sci_port_states - port state machine states
* @ SCI_PORT_STOPPED : port has successfully been stopped . In this state
* no new IO operations are permitted . This state is
* entered from the STOPPING state .
* @ SCI_PORT_STOPPING : port is in the process of stopping . In this
* state no new IO operations are permitted , but
* existing IO operations are allowed to complete .
* This state is entered from the READY state .
* @ SCI_PORT_READY : port is now ready . Thus , the user is able to
* perform IO operations on this port . This state is
* entered from the STARTING state .
* @ SCI_PORT_SUB_WAITING : port is started and ready but has no active
* phys .
* @ SCI_PORT_SUB_OPERATIONAL : port is started and ready and there is at
* least one phy operational .
* @ SCI_PORT_SUB_CONFIGURING : port is started and there was an
* add / remove phy event . This state is only
* used in Automatic Port Configuration Mode
* ( APC )
* @ SCI_PORT_RESETTING : port is in the process of performing a hard
* reset . Thus , the user is unable to perform IO
* operations on this port . This state is entered
* from the READY state .
* @ SCI_PORT_FAILED : port has failed a reset request . This state is
* entered when a port reset request times out . This
* state is entered from the RESETTING state .
*/
#define PORT_STATES {\
C(PORT_STOPPED),\
C(PORT_STOPPING),\
C(PORT_READY),\
C(PORT_SUB_WAITING),\
C(PORT_SUB_OPERATIONAL),\
C(PORT_SUB_CONFIGURING),\
C(PORT_RESETTING),\
C(PORT_FAILED),\
}
#undef C
#define C(a) SCI_## a
enum sci_port_states PORT_STATES;
#undef C
static inline void sci_port_decrement_request_count(struct isci_port *iport)
{
if (WARN_ONCE(iport->started_request_count == 0 ,
"%s: tried to decrement started_request_count past 0!?" ,
__func__))
/* pass */;
else
iport->started_request_count--;
}
#define sci_port_active_phy(port, phy) \
(((port)->active_phy_mask & (1 << (phy)->phy_index)) != 0 )
void sci_port_construct(
struct isci_port *iport,
u8 port_index,
struct isci_host *ihost);
enum sci_status sci_port_start(struct isci_port *iport);
enum sci_status sci_port_stop(struct isci_port *iport);
enum sci_status sci_port_add_phy(
struct isci_port *iport,
struct isci_phy *iphy);
enum sci_status sci_port_remove_phy(
struct isci_port *iport,
struct isci_phy *iphy);
void sci_port_setup_transports(
struct isci_port *iport,
u32 device_id);
void isci_port_bcn_enable(struct isci_host *, struct isci_port *);
void sci_port_deactivate_phy(
struct isci_port *iport,
struct isci_phy *iphy,
bool do_notify_user);
bool sci_port_link_detected(
struct isci_port *iport,
struct isci_phy *iphy);
enum sci_status sci_port_get_properties(
struct isci_port *iport,
struct sci_port_properties *prop);
enum sci_status sci_port_link_up(struct isci_port *iport,
struct isci_phy *iphy);
enum sci_status sci_port_link_down(struct isci_port *iport,
struct isci_phy *iphy);
struct isci_request;
struct isci_remote_device;
enum sci_status sci_port_start_io(
struct isci_port *iport,
struct isci_remote_device *idev,
struct isci_request *ireq);
enum sci_status sci_port_complete_io(
struct isci_port *iport,
struct isci_remote_device *idev,
struct isci_request *ireq);
enum sas_linkrate sci_port_get_max_allowed_speed(
struct isci_port *iport);
void sci_port_broadcast_change_received(
struct isci_port *iport,
struct isci_phy *iphy);
bool sci_port_is_valid_phy_assignment(
struct isci_port *iport,
u32 phy_index);
void sci_port_get_sas_address(
struct isci_port *iport,
struct sci_sas_address *sas_address);
void sci_port_get_attached_sas_address(
struct isci_port *iport,
struct sci_sas_address *sas_address);
void sci_port_set_hang_detection_timeout(
struct isci_port *isci_port,
u32 timeout);
void isci_port_formed(struct asd_sas_phy *);
void isci_port_deformed(struct asd_sas_phy *);
int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
struct isci_phy *iphy);
int isci_ata_check_ready(struct domain_device *dev);
#endif /* !defined(_ISCI_PORT_H_) */
Messung V0.5 in Prozent C=98 H=100 G=98
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-09-28)
¤
*© Formatika GbR, Deutschland
2026-10-10
Neuigkeiten
Aktuelles
Motto des Tages
Open Source Software
Jenseits des Üblichen ....
Besucherstatistik
Statistik
#Sources=1126864
#Domains=1897691