mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-19 10:53:58 +00:00
f11c7f6305
The isci driver is for the integrated SAS controller in the Intel C600 (Patsburg) chipset. Source files in sys/dev/isci directory are FreeBSD-specific, and sys/dev/isci/scil subdirectory contains an OS-agnostic library (SCIL) published by Intel to control the SAS controller. This library is used primarily as-is in this driver, with some post-processing to better integrate into the kernel build environment. isci.4 and a README in the sys/dev/isci directory contain a few additional details. This driver is only built for amd64 and i386 targets. Sponsored by: Intel Reviewed by: scottl Approved by: scottl
276 lines
9.2 KiB
C
276 lines
9.2 KiB
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.
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef _SCIC_LIBRARY_H_
|
|
#define _SCIC_LIBRARY_H_
|
|
|
|
/**
|
|
* @file
|
|
*
|
|
* @brief This file contains all of the interface methods that can be called
|
|
* by an SCI Core user on the library object. The library is the
|
|
* container of all other objects being managed (i.e. controllers,
|
|
* target devices, sas ports, etc.).
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif // __cplusplus
|
|
|
|
#include <dev/isci/scil/sci_types.h>
|
|
#include <dev/isci/scil/sci_status.h>
|
|
|
|
|
|
/**
|
|
* @enum _SCIC_LIBRARY_IO_MODE
|
|
* @brief This enumeration depicts the different IO modes in which the SCI
|
|
* library and it's controllers can operate.
|
|
*/
|
|
typedef enum _SCIC_LIBRARY_IO_MODE
|
|
{
|
|
/**
|
|
* In this mode the SCI library will operate in a polling mode for
|
|
* operations. In other words, the library will not return from a
|
|
* send io method until the completion for the IO has been received.
|
|
*/
|
|
SCIC_IO_MODE_POLLING,
|
|
|
|
/**
|
|
* In this mode the SCI library returns after committing the IO request
|
|
* to the controller hardware. Completion of the request will occur
|
|
* asynchronously.
|
|
*/
|
|
SCIC_IO_MODE_ASYNCHRONOUS
|
|
|
|
} SCIC_LIBRARY_IO_MODE;
|
|
|
|
|
|
struct sci_pci_common_header;
|
|
|
|
/**
|
|
* @brief This method will contsruct the core library based on the supplied
|
|
* parameter information. By default, libraries are considered
|
|
* "ready" as soon as they are constructed.
|
|
*
|
|
* @param[in] library_memory a pointer to the memory at which the
|
|
* library object is located.
|
|
* @param[in] max_controller_count the maximum number of controllers that
|
|
* this library can manage.
|
|
*
|
|
* @return An opaque library handle to be used by the SCI user for all
|
|
* subsequent library operations.
|
|
*/
|
|
SCI_LIBRARY_HANDLE_T scic_library_construct(
|
|
void * library_memory,
|
|
U8 max_controller_count
|
|
);
|
|
|
|
/**
|
|
* This method sets the PCI header information required for proper
|
|
* controller object creation/allocation.
|
|
*
|
|
* @param[in] library the handle to the library object for which to allocate
|
|
* a controller.
|
|
* @param[in] pci_header a pointer to the pci header data for the pci
|
|
* device for which this library is being created.
|
|
*
|
|
* @return none
|
|
*/
|
|
void scic_library_set_pci_info(
|
|
SCI_LIBRARY_HANDLE_T library,
|
|
struct sci_pci_common_header * pci_header
|
|
);
|
|
|
|
/**
|
|
* @brief This method returns the size of the core library object.
|
|
*
|
|
* @param[in] max_controller_count the maximum number of controllers that
|
|
* this library can manage.
|
|
*
|
|
* @return a positive integer value indicating the size (in bytes) of the
|
|
* library object.
|
|
*/
|
|
U32 scic_library_get_object_size(
|
|
U8 max_controller_count
|
|
);
|
|
|
|
/**
|
|
*
|
|
*
|
|
*/
|
|
U8 scic_library_get_pci_device_controller_count(
|
|
SCI_LIBRARY_HANDLE_T library
|
|
);
|
|
|
|
/**
|
|
* @brief This method will allocate the next available core controller object
|
|
* that can be managed by this core library.
|
|
*
|
|
* @param[in] library the handle to the library object for which to allocate
|
|
* a controller.
|
|
* @param[out] new_controller This parameter specifies a pointer to the
|
|
* controller handle that was added to the library.
|
|
|
|
* @return Indicate if the controller was successfully allocated or if iti
|
|
* failed in some way.
|
|
* @retval SCI_SUCCESS if the controller was successfully allocated.
|
|
* @retval SCI_FAILURE_INSUFFICIENT_RESOURCES if the library has no more
|
|
* available controller objects to allocate.
|
|
*/
|
|
SCI_STATUS scic_library_allocate_controller(
|
|
SCI_LIBRARY_HANDLE_T library,
|
|
SCI_CONTROLLER_HANDLE_T * new_controller
|
|
);
|
|
|
|
/**
|
|
* @brief This method will attempt to free the supplied controller to the
|
|
* library.
|
|
*
|
|
* @param[in] library the handle to the library object for which to free
|
|
* a controller.
|
|
* @param[in] controller the handle to the controller object to be freed
|
|
* from the library.
|
|
*
|
|
* @return Indicate if the controller was successfully freed or if it failed
|
|
* in some way.
|
|
* @retval SCI_SUCCESS if the controller was successfully freed.
|
|
* @retval SCI_FAILURE_CONTROLLER_NOT_FOUND if the supplied controller is
|
|
* not managed by the supplied library.
|
|
*/
|
|
SCI_STATUS scic_library_free_controller(
|
|
SCI_LIBRARY_HANDLE_T library,
|
|
SCI_CONTROLLER_HANDLE_T controller
|
|
);
|
|
|
|
/**
|
|
* @brief This method returns the maximum size (in bytes) that an individual
|
|
* SGL element can address using this library.
|
|
*
|
|
* @note SGL size is restricted to the lowest common denominator across all
|
|
* controllers managed by the library.
|
|
* @todo Does the byte count have to be DWORD aligned?
|
|
*
|
|
* @param[in] library the handle to the library object for which to
|
|
* determine the maximum SGL size.
|
|
*
|
|
* @return Return the maximum size (in bytes) for an SGE for any controller
|
|
* managed by this library.
|
|
*/
|
|
U32 scic_library_get_max_sge_size(
|
|
SCI_LIBRARY_HANDLE_T library
|
|
);
|
|
|
|
/**
|
|
* @brief This method returns the maximum number of SGL elements for a
|
|
* single IO request using this library.
|
|
*
|
|
* @note SGE count is restricted to the lowest common denominator across all
|
|
* controllers managed by the library.
|
|
*
|
|
* @param[in] library the handle to the library object for which to
|
|
* determine the maximum number of SGEs per IO request.
|
|
*
|
|
* @return Return the maximum number of SGEs for an IO request for any
|
|
* controller in this library.
|
|
*/
|
|
U32 scic_library_get_max_sge_count(
|
|
SCI_LIBRARY_HANDLE_T library
|
|
);
|
|
|
|
/**
|
|
* @brief This method returns the maximum length for any IO request that
|
|
* can be handled by the underlying controllers
|
|
*
|
|
* @note IO length is restricted to the lowest common denominator across all
|
|
* controllers managed by the library.
|
|
*
|
|
* @param[in] library the handle to the library object for which to
|
|
* determine the maximum length for all IO requests.
|
|
*
|
|
* @return Return the maximum length for all IO requests for any
|
|
* controller in this library.
|
|
*/
|
|
U32 scic_library_get_max_io_length(
|
|
SCI_LIBRARY_HANDLE_T library
|
|
);
|
|
|
|
/**
|
|
* @brief This method returns the minimum number of timers needed. If the
|
|
* user supplies timers less then the number specified via this
|
|
* call, then the user runs the risk of improper operation.
|
|
*
|
|
* @return This method returns a value representing the minimum number of
|
|
* timers required by this framework implementation
|
|
*/
|
|
U16 scic_library_get_min_timer_count(
|
|
void
|
|
);
|
|
|
|
/**
|
|
* @brief This method returns the maximum number of timers that could
|
|
* be ever be in use by this component at a given time.
|
|
*
|
|
* @return This method returns a value representing the minimum number of
|
|
* timers required by this framework implementation
|
|
*/
|
|
U16 scic_library_get_max_timer_count(
|
|
void
|
|
);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif // __cplusplus
|
|
|
|
#endif // _SCIC_LIBRARY_H_
|
|
|