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kernel_optimize_test/drivers/scsi/isci/isci.h
Dan Williams f1f52e7593 isci: uplevel request infrastructure 
* Consolidate tiny header files
* Move files out of core/ (drop core/scic_sds_ prefix)
* Merge core/scic_sds_request.[ch] into request.[ch]
* Cleanup request.c namespace (clean forward declarations and global
  namespace pollution)

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03 04:04:47 -07:00

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/*
* 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_H__
#define __ISCI_H__
#include <linux/interrupt.h>
#define DRV_NAME "isci"
#define SCI_PCI_BAR_COUNT 2
#define SCI_NUM_MSI_X_INT 2
#define SCI_SMU_BAR 0
#define SCI_SMU_BAR_SIZE (16*1024)
#define SCI_SCU_BAR 1
#define SCI_SCU_BAR_SIZE (4*1024*1024)
#define SCI_IO_SPACE_BAR0 2
#define SCI_IO_SPACE_BAR1 3
#define ISCI_CAN_QUEUE_VAL 250 /* < SCI_MAX_IO_REQUESTS ? */
#define SCIC_CONTROLLER_STOP_TIMEOUT 5000
#define SCI_CONTROLLER_INVALID_IO_TAG 0xFFFF
enum sci_controller_mode {
SCI_MODE_SPEED,
SCI_MODE_SIZE /* deprecated */
};
#define SCI_MAX_PHYS (4)
#define SCI_MAX_PORTS SCI_MAX_PHYS
#define SCI_MIN_SMP_PHYS (38)
#define SCI_MAX_SMP_PHYS (384) /* not silicon constrained */
#define SCI_MAX_REMOTE_DEVICES (256)
#define SCI_MIN_REMOTE_DEVICES (16)
#define SCI_MAX_IO_REQUESTS (256)
#define SCI_MIN_IO_REQUESTS (1)
#define SCI_MAX_MSIX_MESSAGES (2)
#define SCI_MAX_SCATTER_GATHER_ELEMENTS 130 /* not silicon constrained */
#define SCI_MIN_SCATTER_GATHER_ELEMENTS 1
#define SCI_MAX_CONTROLLERS 2
#define SCI_MAX_DOMAINS SCI_MAX_PORTS
/* 2 indicates the maximum number of UFs that can occur for a given IO request.
* The hardware handles reception of additional unsolicited frames while all
* UFs are in use, by holding off the transmitting device. This number could
* be theoretically reduced to 1, but 2 provides for more reliable operation.
* During SATA PIO operation, it is possible under some conditions for there to
* be 3 separate FISes received, back to back to back (PIO Setup, Data, D2H
* Register). It is unlikely to have all 3 pending all at once without some of
* them already being processed.
*/
#define SCU_MIN_UNSOLICITED_FRAMES (1)
#define SCU_MIN_CRITICAL_NOTIFICATIONS (24)
#define SCU_MIN_EVENTS (4)
#define SCU_MIN_COMPLETION_QUEUE_SCRATCH (2)
#define SCU_MIN_COMPLETION_QUEUE_ENTRIES (SCU_MIN_CRITICAL_NOTIFICATIONS \
+ SCU_MIN_EVENTS \
+ SCU_MIN_UNSOLICITED_FRAMES \
+ SCI_MIN_IO_REQUESTS \
+ SCU_MIN_COMPLETION_QUEUE_SCRATCH)
#define SCU_MAX_CRITICAL_NOTIFICATIONS (384)
#define SCU_MAX_EVENTS (128)
#define SCU_MAX_UNSOLICITED_FRAMES (128)
#define SCU_MAX_COMPLETION_QUEUE_SCRATCH (128)
#define SCU_MAX_COMPLETION_QUEUE_ENTRIES (SCU_MAX_CRITICAL_NOTIFICATIONS \
+ SCU_MAX_EVENTS \
+ SCU_MAX_UNSOLICITED_FRAMES \
+ SCI_MAX_IO_REQUESTS \
+ SCU_MAX_COMPLETION_QUEUE_SCRATCH)
#if !defined(ENABLE_MINIMUM_MEMORY_MODE)
#define SCU_UNSOLICITED_FRAME_COUNT SCU_MAX_UNSOLICITED_FRAMES
#define SCU_CRITICAL_NOTIFICATION_COUNT SCU_MAX_CRITICAL_NOTIFICATIONS
#define SCU_EVENT_COUNT SCU_MAX_EVENTS
#define SCU_COMPLETION_QUEUE_SCRATCH SCU_MAX_COMPLETION_QUEUE_SCRATCH
#define SCU_IO_REQUEST_COUNT SCI_MAX_IO_REQUESTS
#define SCU_IO_REQUEST_SGE_COUNT SCI_MAX_SCATTER_GATHER_ELEMENTS
#define SCU_COMPLETION_QUEUE_COUNT SCU_MAX_COMPLETION_QUEUE_ENTRIES
#else
#define SCU_UNSOLICITED_FRAME_COUNT SCU_MIN_UNSOLICITED_FRAMES
#define SCU_CRITICAL_NOTIFICATION_COUNT SCU_MIN_CRITICAL_NOTIFICATIONS
#define SCU_EVENT_COUNT SCU_MIN_EVENTS
#define SCU_COMPLETION_QUEUE_SCRATCH SCU_MIN_COMPLETION_QUEUE_SCRATCH
#define SCU_IO_REQUEST_COUNT SCI_MIN_IO_REQUESTS
#define SCU_IO_REQUEST_SGE_COUNT SCI_MIN_SCATTER_GATHER_ELEMENTS
#define SCU_COMPLETION_QUEUE_COUNT SCU_MIN_COMPLETION_QUEUE_ENTRIES
#endif /* !defined(ENABLE_MINIMUM_MEMORY_OPERATION) */
/**
*
*
* The SCU_COMPLETION_QUEUE_COUNT constant indicates the size of the completion
* queue into which the hardware DMAs 32-bit quantas (completion entries).
*/
/**
*
*
* This queue must be programmed to a power of 2 size (e.g. 32, 64, 1024, etc.).
*/
#if (SCU_COMPLETION_QUEUE_COUNT != 16) && \
(SCU_COMPLETION_QUEUE_COUNT != 32) && \
(SCU_COMPLETION_QUEUE_COUNT != 64) && \
(SCU_COMPLETION_QUEUE_COUNT != 128) && \
(SCU_COMPLETION_QUEUE_COUNT != 256) && \
(SCU_COMPLETION_QUEUE_COUNT != 512) && \
(SCU_COMPLETION_QUEUE_COUNT != 1024)
#error "SCU_COMPLETION_QUEUE_COUNT must be set to a power of 2."
#endif
#if SCU_MIN_UNSOLICITED_FRAMES > SCU_MAX_UNSOLICITED_FRAMES
#error "Invalid configuration of unsolicited frame constants"
#endif /* SCU_MIN_UNSOLICITED_FRAMES > SCU_MAX_UNSOLICITED_FRAMES */
#define SCU_MIN_UF_TABLE_ENTRIES (8)
#define SCU_ABSOLUTE_MAX_UNSOLICITED_FRAMES (4096)
#define SCU_UNSOLICITED_FRAME_BUFFER_SIZE (1024)
#define SCU_INVALID_FRAME_INDEX (0xFFFF)
#define SCU_IO_REQUEST_MAX_SGE_SIZE (0x00FFFFFF)
#define SCU_IO_REQUEST_MAX_TRANSFER_LENGTH (0x00FFFFFF)
/*
* Determine the size of the unsolicited frame array including
* unused buffers. */
#if SCU_UNSOLICITED_FRAME_COUNT <= SCU_MIN_UF_TABLE_ENTRIES
#define SCU_UNSOLICITED_FRAME_CONTROL_ARRAY_SIZE SCU_MIN_UF_TABLE_ENTRIES
#else
#define SCU_UNSOLICITED_FRAME_CONTROL_ARRAY_SIZE SCU_MAX_UNSOLICITED_FRAMES
#endif /* SCU_UNSOLICITED_FRAME_COUNT <= SCU_MIN_UF_TABLE_ENTRIES */
/**
* enum sci_status - This is the general return status enumeration for non-IO,
* non-task management related SCI interface methods.
*
*
*/
enum sci_status {
/**
* This member indicates successful completion.
*/
SCI_SUCCESS = 0,
/**
* This value indicates that the calling method completed successfully,
* but that the IO may have completed before having it's start method
* invoked. This occurs during SAT translation for requests that do
* not require an IO to the target or for any other requests that may
* be completed without having to submit IO.
*/
SCI_SUCCESS_IO_COMPLETE_BEFORE_START,
/**
* This Value indicates that the SCU hardware returned an early response
* because the io request specified more data than is returned by the
* target device (mode pages, inquiry data, etc.). The completion routine
* will handle this case to get the actual number of bytes transferred.
*/
SCI_SUCCESS_IO_DONE_EARLY,
/**
* This member indicates that the object for which a state change is
* being requested is already in said state.
*/
SCI_WARNING_ALREADY_IN_STATE,
/**
* This member indicates interrupt coalescence timer may cause SAS
* specification compliance issues (i.e. SMP target mode response
* frames must be returned within 1.9 milliseconds).
*/
SCI_WARNING_TIMER_CONFLICT,
/**
* This field indicates a sequence of action is not completed yet. Mostly,
* this status is used when multiple ATA commands are needed in a SATI translation.
*/
SCI_WARNING_SEQUENCE_INCOMPLETE,
/**
* This member indicates that there was a general failure.
*/
SCI_FAILURE,
/**
* This member indicates that the SCI implementation is unable to complete
* an operation due to a critical flaw the prevents any further operation
* (i.e. an invalid pointer).
*/
SCI_FATAL_ERROR,
/**
* This member indicates the calling function failed, because the state
* of the controller is in a state that prevents successful completion.
*/
SCI_FAILURE_INVALID_STATE,
/**
* This member indicates the calling function failed, because there is
* insufficient resources/memory to complete the request.
*/
SCI_FAILURE_INSUFFICIENT_RESOURCES,
/**
* This member indicates the calling function failed, because the
* controller object required for the operation can't be located.
*/
SCI_FAILURE_CONTROLLER_NOT_FOUND,
/**
* This member indicates the calling function failed, because the
* discovered controller type is not supported by the library.
*/
SCI_FAILURE_UNSUPPORTED_CONTROLLER_TYPE,
/**
* This member indicates the calling function failed, because the
* requested initialization data version isn't supported.
*/
SCI_FAILURE_UNSUPPORTED_INIT_DATA_VERSION,
/**
* This member indicates the calling function failed, because the
* requested configuration of SAS Phys into SAS Ports is not supported.
*/
SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION,
/**
* This member indicates the calling function failed, because the
* requested protocol is not supported by the remote device, port,
* or controller.
*/
SCI_FAILURE_UNSUPPORTED_PROTOCOL,
/**
* This member indicates the calling function failed, because the
* requested information type is not supported by the SCI implementation.
*/
SCI_FAILURE_UNSUPPORTED_INFORMATION_TYPE,
/**
* This member indicates the calling function failed, because the
* device already exists.
*/
SCI_FAILURE_DEVICE_EXISTS,
/**
* This member indicates the calling function failed, because adding
* a phy to the object is not possible.
*/
SCI_FAILURE_ADDING_PHY_UNSUPPORTED,
/**
* This member indicates the calling function failed, because the
* requested information type is not supported by the SCI implementation.
*/
SCI_FAILURE_UNSUPPORTED_INFORMATION_FIELD,
/**
* This member indicates the calling function failed, because the SCI
* implementation does not support the supplied time limit.
*/
SCI_FAILURE_UNSUPPORTED_TIME_LIMIT,
/**
* This member indicates the calling method failed, because the SCI
* implementation does not contain the specified Phy.
*/
SCI_FAILURE_INVALID_PHY,
/**
* This member indicates the calling method failed, because the SCI
* implementation does not contain the specified Port.
*/
SCI_FAILURE_INVALID_PORT,
/**
* This member indicates the calling method was partly successful
* The port was reset but not all phys in port are operational
*/
SCI_FAILURE_RESET_PORT_PARTIAL_SUCCESS,
/**
* This member indicates that calling method failed
* The port reset did not complete because none of the phys are operational
*/
SCI_FAILURE_RESET_PORT_FAILURE,
/**
* This member indicates the calling method failed, because the SCI
* implementation does not contain the specified remote device.
*/
SCI_FAILURE_INVALID_REMOTE_DEVICE,
/**
* This member indicates the calling method failed, because the remote
* device is in a bad state and requires a reset.
*/
SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
/**
* This member indicates the calling method failed, because the SCI
* implementation does not contain or support the specified IO tag.
*/
SCI_FAILURE_INVALID_IO_TAG,
/**
* This member indicates that the operation failed and the user should
* check the response data associated with the IO.
*/
SCI_FAILURE_IO_RESPONSE_VALID,
/**
* This member indicates that the operation failed, the failure is
* controller implementation specific, and the response data associated
* with the request is not valid. You can query for the controller
* specific error information via scic_controller_get_request_status()
*/
SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
/**
* This member indicated that the operation failed because the
* user requested this IO to be terminated.
*/
SCI_FAILURE_IO_TERMINATED,
/**
* This member indicates that the operation failed and the associated
* request requires a SCSI abort task to be sent to the target.
*/
SCI_FAILURE_IO_REQUIRES_SCSI_ABORT,
/**
* This member indicates that the operation failed because the supplied
* device could not be located.
*/
SCI_FAILURE_DEVICE_NOT_FOUND,
/**
* This member indicates that the operation failed because the
* objects association is required and is not correctly set.
*/
SCI_FAILURE_INVALID_ASSOCIATION,
/**
* This member indicates that the operation failed, because a timeout
* occurred.
*/
SCI_FAILURE_TIMEOUT,
/**
* This member indicates that the operation failed, because the user
* specified a value that is either invalid or not supported.
*/
SCI_FAILURE_INVALID_PARAMETER_VALUE,
/**
* This value indicates that the operation failed, because the number
* of messages (MSI-X) is not supported.
*/
SCI_FAILURE_UNSUPPORTED_MESSAGE_COUNT,
/**
* This value indicates that the method failed due to a lack of
* available NCQ tags.
*/
SCI_FAILURE_NO_NCQ_TAG_AVAILABLE,
/**
* This value indicates that a protocol violation has occurred on the
* link.
*/
SCI_FAILURE_PROTOCOL_VIOLATION,
/**
* This value indicates a failure condition that retry may help to clear.
*/
SCI_FAILURE_RETRY_REQUIRED,
/**
* This field indicates the retry limit was reached when a retry is attempted
*/
SCI_FAILURE_RETRY_LIMIT_REACHED,
/**
* This member indicates the calling method was partly successful.
* Mostly, this status is used when a LUN_RESET issued to an expander attached
* STP device in READY NCQ substate needs to have RNC suspended/resumed
* before posting TC.
*/
SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS,
/**
* This field indicates an illegal phy connection based on the routing attribute
* of both expander phy attached to each other.
*/
SCI_FAILURE_ILLEGAL_ROUTING_ATTRIBUTE_CONFIGURATION,
/**
* This field indicates a CONFIG ROUTE INFO command has a response with function result
* INDEX DOES NOT EXIST, usually means exceeding max route index.
*/
SCI_FAILURE_EXCEED_MAX_ROUTE_INDEX,
/**
* This value indicates that an unsupported PCI device ID has been
* specified. This indicates that attempts to invoke
* scic_library_allocate_controller() will fail.
*/
SCI_FAILURE_UNSUPPORTED_PCI_DEVICE_ID
};
/**
* enum sci_io_status - This enumeration depicts all of the possible IO
* completion status values. Each value in this enumeration maps directly
* to a value in the enum sci_status enumeration. Please refer to that
* enumeration for detailed comments concerning what the status represents.
*
* Add the API to retrieve the SCU status from the core. Check to see that the
* following status are properly handled: - SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL
* - SCI_IO_FAILURE_INVALID_IO_TAG
*/
enum sci_io_status {
SCI_IO_SUCCESS = SCI_SUCCESS,
SCI_IO_FAILURE = SCI_FAILURE,
SCI_IO_SUCCESS_COMPLETE_BEFORE_START = SCI_SUCCESS_IO_COMPLETE_BEFORE_START,
SCI_IO_SUCCESS_IO_DONE_EARLY = SCI_SUCCESS_IO_DONE_EARLY,
SCI_IO_FAILURE_INVALID_STATE = SCI_FAILURE_INVALID_STATE,
SCI_IO_FAILURE_INSUFFICIENT_RESOURCES = SCI_FAILURE_INSUFFICIENT_RESOURCES,
SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL = SCI_FAILURE_UNSUPPORTED_PROTOCOL,
SCI_IO_FAILURE_RESPONSE_VALID = SCI_FAILURE_IO_RESPONSE_VALID,
SCI_IO_FAILURE_CONTROLLER_SPECIFIC_ERR = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
SCI_IO_FAILURE_TERMINATED = SCI_FAILURE_IO_TERMINATED,
SCI_IO_FAILURE_REQUIRES_SCSI_ABORT = SCI_FAILURE_IO_REQUIRES_SCSI_ABORT,
SCI_IO_FAILURE_INVALID_PARAMETER_VALUE = SCI_FAILURE_INVALID_PARAMETER_VALUE,
SCI_IO_FAILURE_NO_NCQ_TAG_AVAILABLE = SCI_FAILURE_NO_NCQ_TAG_AVAILABLE,
SCI_IO_FAILURE_PROTOCOL_VIOLATION = SCI_FAILURE_PROTOCOL_VIOLATION,
SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
SCI_IO_FAILURE_RETRY_REQUIRED = SCI_FAILURE_RETRY_REQUIRED,
SCI_IO_FAILURE_RETRY_LIMIT_REACHED = SCI_FAILURE_RETRY_LIMIT_REACHED,
SCI_IO_FAILURE_INVALID_REMOTE_DEVICE = SCI_FAILURE_INVALID_REMOTE_DEVICE
};
/**
* enum sci_task_status - This enumeration depicts all of the possible task
* completion status values. Each value in this enumeration maps directly
* to a value in the enum sci_status enumeration. Please refer to that
* enumeration for detailed comments concerning what the status represents.
*
* Check to see that the following status are properly handled:
*/
enum sci_task_status {
SCI_TASK_SUCCESS = SCI_SUCCESS,
SCI_TASK_FAILURE = SCI_FAILURE,
SCI_TASK_FAILURE_INVALID_STATE = SCI_FAILURE_INVALID_STATE,
SCI_TASK_FAILURE_INSUFFICIENT_RESOURCES = SCI_FAILURE_INSUFFICIENT_RESOURCES,
SCI_TASK_FAILURE_UNSUPPORTED_PROTOCOL = SCI_FAILURE_UNSUPPORTED_PROTOCOL,
SCI_TASK_FAILURE_INVALID_TAG = SCI_FAILURE_INVALID_IO_TAG,
SCI_TASK_FAILURE_RESPONSE_VALID = SCI_FAILURE_IO_RESPONSE_VALID,
SCI_TASK_FAILURE_CONTROLLER_SPECIFIC_ERR = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
SCI_TASK_FAILURE_TERMINATED = SCI_FAILURE_IO_TERMINATED,
SCI_TASK_FAILURE_INVALID_PARAMETER_VALUE = SCI_FAILURE_INVALID_PARAMETER_VALUE,
SCI_TASK_FAILURE_REMOTE_DEVICE_RESET_REQUIRED = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
SCI_TASK_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS = SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS
};
/**
* sci_swab32_cpy - convert between scsi and scu-hardware byte format
* @dest: receive the 4-byte endian swapped version of src
* @src: word aligned source buffer
*
* scu hardware handles SSP/SMP control, response, and unidentified
* frames in "big endian dword" order. Regardless of host endian this
* is always a swab32()-per-dword conversion of the standard definition,
* i.e. single byte fields swapped and multi-byte fields in little-
* endian
*/
static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
{
u32 *dest = _dest, *src = _src;
while (--word_cnt >= 0)
dest[word_cnt] = swab32(src[word_cnt]);
}
extern unsigned char no_outbound_task_to;
extern u16 ssp_max_occ_to;
extern u16 stp_max_occ_to;
extern u16 ssp_inactive_to;
extern u16 stp_inactive_to;
extern unsigned char phy_gen;
extern unsigned char max_concurr_spinup;
irqreturn_t isci_msix_isr(int vec, void *data);
irqreturn_t isci_intx_isr(int vec, void *data);
irqreturn_t isci_error_isr(int vec, void *data);
#endif /* __ISCI_H__ */
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