diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/isci/Makefile | 1 | ||||
| -rw-r--r-- | drivers/scsi/isci/host.c | 39 | ||||
| -rw-r--r-- | drivers/scsi/isci/host.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/isci/isci.h | 19 | ||||
| -rw-r--r-- | drivers/scsi/isci/phy.c | 6 | ||||
| -rw-r--r-- | drivers/scsi/isci/phy.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/isci/port.c | 6 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_device.c | 6 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_node_context.c | 8 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_node_context.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/isci/request.c | 5 | ||||
| -rw-r--r-- | drivers/scsi/isci/state_machine.c | 138 | ||||
| -rw-r--r-- | drivers/scsi/isci/state_machine.h | 122 |
13 files changed, 62 insertions, 294 deletions
diff --git a/drivers/scsi/isci/Makefile b/drivers/scsi/isci/Makefile index ad58fe3acc72..42449701ad9e 100644 --- a/drivers/scsi/isci/Makefile +++ b/drivers/scsi/isci/Makefile @@ -2,7 +2,6 @@ obj-$(CONFIG_SCSI_ISCI) += isci.o isci-objs := init.o phy.o request.o sata.o \ remote_device.o port.o \ host.o task.o probe_roms.o \ - state_machine.o \ remote_node_context.o \ remote_node_table.o \ unsolicited_frame_control.o \ diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 81ee64c0a4b7..f502882a2e17 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -197,6 +197,39 @@ */ #define COMPLETION_QUEUE_CYCLE_BIT(x) ((x) & 0x80000000) +/* Init the state machine and call the state entry function (if any) */ +void sci_init_sm(struct sci_base_state_machine *sm, + const struct sci_base_state *state_table, u32 initial_state) +{ + sci_state_transition_t handler; + + sm->initial_state_id = initial_state; + sm->previous_state_id = initial_state; + sm->current_state_id = initial_state; + sm->state_table = state_table; + + handler = sm->state_table[initial_state].enter_state; + if (handler) + handler(sm); +} + +/* Call the state exit fn, update the current state, call the state entry fn */ +void sci_change_state(struct sci_base_state_machine *sm, u32 next_state) +{ + sci_state_transition_t handler; + + handler = sm->state_table[sm->current_state_id].exit_state; + if (handler) + handler(sm); + + sm->previous_state_id = sm->current_state_id; + sm->current_state_id = next_state; + + handler = sm->state_table[sm->current_state_id].enter_state; + if (handler) + handler(sm); +} + static bool scic_sds_controller_completion_queue_has_entries( struct scic_sds_controller *scic) { @@ -1807,11 +1840,7 @@ static enum sci_status scic_controller_construct(struct scic_sds_controller *sci struct isci_host *ihost = scic_to_ihost(scic); u8 i; - sci_base_state_machine_construct(&scic->sm, - scic_sds_controller_state_table, - SCIC_INITIAL); - - sci_base_state_machine_start(&scic->sm); + sci_init_sm(&scic->sm, scic_sds_controller_state_table, SCIC_INITIAL); scic->scu_registers = scu_base; scic->smu_registers = smu_base; diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index be09765ee1d5..4020cf7b6f2a 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -58,7 +58,7 @@ #include "remote_device.h" #include "phy.h" #include "pool.h" -#include "state_machine.h" +#include "isci.h" #include "remote_node_table.h" #include "registers.h" #include "scu_unsolicited_frame.h" diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h index 2fe5557d8590..80cfb45f8da1 100644 --- a/drivers/scsi/isci/isci.h +++ b/drivers/scsi/isci/isci.h @@ -57,6 +57,7 @@ #define __ISCI_H__ #include <linux/interrupt.h> +#include <linux/types.h> #define DRV_NAME "isci" #define SCI_PCI_BAR_COUNT 2 @@ -584,4 +585,22 @@ static inline void sci_del_timer(struct sci_timer *tmr) del_timer(&tmr->timer); } +struct sci_base_state_machine { + const struct sci_base_state *state_table; + u32 initial_state_id; + u32 current_state_id; + u32 previous_state_id; +}; + +typedef void (*sci_state_transition_t)(struct sci_base_state_machine *sm); + +struct sci_base_state { + sci_state_transition_t enter_state; /* Called on state entry */ + sci_state_transition_t exit_state; /* Called on state exit */ +}; + +extern void sci_init_sm(struct sci_base_state_machine *sm, + const struct sci_base_state *state_table, + u32 initial_state); +extern void sci_change_state(struct sci_base_state_machine *sm, u32 next_state); #endif /* __ISCI_H__ */ diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 9de21c719351..784c9a71333a 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -1294,11 +1294,7 @@ static const struct sci_base_state scic_sds_phy_state_table[] = { void scic_sds_phy_construct(struct scic_sds_phy *sci_phy, struct scic_sds_port *owning_port, u8 phy_index) { - sci_base_state_machine_construct(&sci_phy->sm, - scic_sds_phy_state_table, - SCI_PHY_INITIAL); - - sci_base_state_machine_start(&sci_phy->sm); + sci_init_sm(&sci_phy->sm, scic_sds_phy_state_table, SCI_PHY_INITIAL); /* Copy the rest of the input data to our locals */ sci_phy->owning_port = owning_port; diff --git a/drivers/scsi/isci/phy.h b/drivers/scsi/isci/phy.h index 9d21d2754dbb..97ebee16f4b3 100644 --- a/drivers/scsi/isci/phy.h +++ b/drivers/scsi/isci/phy.h @@ -57,7 +57,7 @@ #include <scsi/sas.h> #include <scsi/libsas.h> -#include "state_machine.h" +#include "isci.h" #include "sas.h" /* This is the timeout value for the SATA phy to wait for a SIGNATURE FIS diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index 6370b93bd6ae..74f06f3c0735 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -1807,11 +1807,7 @@ static const struct sci_base_state scic_sds_port_state_table[] = { void scic_sds_port_construct(struct scic_sds_port *sci_port, u8 index, struct scic_sds_controller *scic) { - sci_base_state_machine_construct(&sci_port->sm, - scic_sds_port_state_table, - SCI_PORT_STOPPED); - - sci_base_state_machine_start(&sci_port->sm); + sci_init_sm(&sci_port->sm, scic_sds_port_state_table, SCI_PORT_STOPPED); sci_port->logical_port_index = SCIC_SDS_DUMMY_PORT; sci_port->physical_port_index = index; diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 6c93f20f3dd3..3b555dcbe569 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -1095,11 +1095,7 @@ static void scic_remote_device_construct(struct scic_sds_port *sci_port, sci_dev->owning_port = sci_port; sci_dev->started_request_count = 0; - sci_base_state_machine_construct(&sci_dev->sm, - scic_sds_remote_device_state_table, - SCI_DEV_INITIAL); - - sci_base_state_machine_start(&sci_dev->sm); + sci_init_sm(&sci_dev->sm, scic_sds_remote_device_state_table, SCI_DEV_INITIAL); scic_sds_remote_node_context_construct(&sci_dev->rnc, SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX); diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 24b1d8acf7b8..9e8967e19688 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -54,7 +54,7 @@ */ #include "host.h" -#include "state_machine.h" +#include "isci.h" #include "remote_device.h" #include "remote_node_context.h" #include "scu_event_codes.h" @@ -373,11 +373,7 @@ void scic_sds_remote_node_context_construct(struct scic_sds_remote_node_context rnc->remote_node_index = remote_node_index; rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED; - sci_base_state_machine_construct(&rnc->sm, - scic_sds_remote_node_context_state_table, - SCI_RNC_INITIAL); - - sci_base_state_machine_start(&rnc->sm); + sci_init_sm(&rnc->sm, scic_sds_remote_node_context_state_table, SCI_RNC_INITIAL); } enum sci_status scic_sds_remote_node_context_event_handler(struct scic_sds_remote_node_context *sci_rnc, diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index e6c7248be3f6..67a45b686a98 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -64,7 +64,7 @@ * */ -#include "state_machine.h" +#include "isci.h" /** * diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 89f0ab925c27..8bd1f7dbad37 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -3077,10 +3077,7 @@ scic_sds_general_request_construct(struct scic_sds_controller *scic, u16 io_tag, struct scic_sds_request *sci_req) { - sci_base_state_machine_construct(&sci_req->sm, - scic_sds_request_state_table, - SCI_REQ_INIT); - sci_base_state_machine_start(&sci_req->sm); + sci_init_sm(&sci_req->sm, scic_sds_request_state_table, SCI_REQ_INIT); sci_req->io_tag = io_tag; sci_req->owning_controller = scic; diff --git a/drivers/scsi/isci/state_machine.c b/drivers/scsi/isci/state_machine.c deleted file mode 100644 index 8cfefb959f22..000000000000 --- a/drivers/scsi/isci/state_machine.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - * 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. - */ - -/** - * This file contains all of the functionality common to all state machine - * object implementations. - * - * - */ - -#include "state_machine.h" - -static void sci_state_machine_exit_state(struct sci_base_state_machine *sm) -{ - u32 state = sm->current_state_id; - sci_state_transition_t exit = sm->state_table[state].exit_state; - - if (exit) - exit(sm); -} - -static void sci_state_machine_enter_state(struct sci_base_state_machine *sm) -{ - u32 state = sm->current_state_id; - sci_state_transition_t enter = sm->state_table[state].enter_state; - - if (enter) - enter(sm); -} - -/** - * This method will set the initial state and state table for the state - * machine. The caller should follow this request with the initialize - * request to cause the state machine to start. - * @sm: This parameter provides the state machine object to be - * constructed. - * @state_table: This parameter specifies the table of state objects that is - * managed by this state machine. - * @initial_state: This parameter specifies the value of the initial state for - * this state machine. - * - */ -void sci_base_state_machine_construct(struct sci_base_state_machine *sm, - const struct sci_base_state *state_table, - u32 initial_state) -{ - sm->initial_state_id = initial_state; - sm->previous_state_id = initial_state; - sm->current_state_id = initial_state; - sm->state_table = state_table; -} - -/** - * This method will cause the state machine to enter the initial state. - * @sm: This parameter specifies the state machine that is to - * be started. - * - * sci_base_state_machine_construct() for how to set the initial state none - */ -void sci_base_state_machine_start(struct sci_base_state_machine *sm) -{ - sm->current_state_id = sm->initial_state_id; - sci_state_machine_enter_state(sm); -} - -/** - * This method will cause the state machine to exit it's current state only. - * @sm: This parameter specifies the state machine that is to - * be stopped. - * - */ -void sci_base_state_machine_stop( - struct sci_base_state_machine *sm) -{ - sci_state_machine_exit_state(sm); -} - -void sci_change_state(struct sci_base_state_machine *sm, u32 next_state) -{ - sci_state_machine_exit_state(sm); - - sm->previous_state_id = sm->current_state_id; - sm->current_state_id = next_state; - - sci_state_machine_enter_state(sm); -} diff --git a/drivers/scsi/isci/state_machine.h b/drivers/scsi/isci/state_machine.h deleted file mode 100644 index 6cb55a0adc54..000000000000 --- a/drivers/scsi/isci/state_machine.h +++ /dev/null @@ -1,122 +0,0 @@ -/* - * 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 _SCI_BASE_STATE_MACHINE_H_ -#define _SCI_BASE_STATE_MACHINE_H_ - -#include <linux/types.h> - -struct sci_base_state_machine; -typedef void (*sci_base_state_handler_t)(void); -typedef void (*sci_state_transition_t)(struct sci_base_state_machine *sm); - -/** - * struct sci_base_state - The base state object abstracts the fields common to - * all state objects defined in SCI. - * - * - */ -struct sci_base_state { - /** - * This field is a function pointer that defines the method to be - * invoked when the state is entered. - */ - sci_state_transition_t enter_state; - - /** - * This field is a function pointer that defines the method to be - * invoked when the state is exited. - */ - sci_state_transition_t exit_state; -}; - -/** - * struct sci_base_state_machine - This structure defines the fields common to - * all state machines. - * - * - */ -struct sci_base_state_machine { - /** - * This field points to the start of the state machine's state table. - */ - const struct sci_base_state *state_table; - - /** - * This field simply indicates the state value for the state machine's - * initial state. - */ - u32 initial_state_id; - - /** - * This field indicates the current state of the state machine. - */ - u32 current_state_id; - - /** - * This field indicates the previous state of the state machine. - */ - u32 previous_state_id; - -}; - -void sci_base_state_machine_construct(struct sci_base_state_machine *sm, - const struct sci_base_state *state_table, - u32 initial_state); -void sci_base_state_machine_start(struct sci_base_state_machine *sm); -void sci_base_state_machine_stop(struct sci_base_state_machine *sm); -void sci_change_state(struct sci_base_state_machine *sm, u32 next_state); - -#endif /* _SCI_BASE_STATE_MACHINE_H_ */ |