a2fc8ade10
In the conversion into a tunable, we converted the size of the s/g list used by the driver to be based off of a hardcoded size of 128k rather than maxphys, this caused performance problems for us. Revert this to use the maxphys tunable. Note that this constant is used to size dynamically allocated things, and not static data structs, so this is safe. Reviewed By: imp, kib, mav Tested By:i dhw Differential Revision: https://reviews.freebsd.org/D28023 Sponsored by: Netflix
227 lines
7.2 KiB
C
227 lines
7.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SCI_CONTROLLER_CONSTANTS_H_
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#define _SCI_CONTROLLER_CONSTANTS_H_
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#include <sys/param.h>
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/**
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* @file
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*
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* @brief This file contains constant values that change based on the type
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* of core or framework being managed. These constants are exported
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* in order to provide the user with information as to the bounds
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* (i.e. how many) of specific objects.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#ifdef SCIC_SDS_4_ENABLED
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#ifndef SCI_MAX_PHYS
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/**
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* This constant defines the maximum number of phy objects that can be
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* supported for the SCU Driver Standard (SDS) library. This is tied
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* directly to silicon capabilities.
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*/
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#define SCI_MAX_PHYS (4)
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#endif
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#ifndef SCI_MAX_PORTS
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/**
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* This constant defines the maximum number of port objects that can be
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* supported for the SCU Driver Standard (SDS) library. This is tied
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* directly to silicon capabilities.
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*/
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#define SCI_MAX_PORTS SCI_MAX_PHYS
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#endif
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#ifndef SCI_MIN_SMP_PHYS
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/**
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* This constant defines the minimum number of SMP phy objects that
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* can be supported for a single expander level.
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* This was determined by using 36 physical phys and room for 2 virtual
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* phys.
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*/
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#define SCI_MIN_SMP_PHYS (38)
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#endif
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#ifndef SCI_MAX_SMP_PHYS
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/**
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* This constant defines the maximum number of SMP phy objects that
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* can be supported for the SCU Driver Standard (SDS) library.
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* This number can be increased if required.
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*/
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#define SCI_MAX_SMP_PHYS (384)
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#endif
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#ifndef SCI_MAX_REMOTE_DEVICES
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/**
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* This constant defines the maximum number of remote device objects that
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* can be supported for the SCU Driver Standard (SDS) library. This is tied
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* directly to silicon capabilities.
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*/
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#define SCI_MAX_REMOTE_DEVICES (256)
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#endif
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#ifndef SCI_MIN_REMOTE_DEVICES
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/**
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* This constant defines the minimum number of remote device objects that
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* can be supported for the SCU Driver Standard (SDS) library. This # can
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* be configured for minimum memory environments to any value less than
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* SCI_MAX_REMOTE_DEVICES
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*/
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#define SCI_MIN_REMOTE_DEVICES (16)
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#endif
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#ifndef SCI_MAX_IO_REQUESTS
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/**
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* This constant defines the maximum number of IO request objects that
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* can be supported for the SCU Driver Standard (SDS) library. This is tied
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* directly to silicon capabilities.
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*/
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#define SCI_MAX_IO_REQUESTS (256)
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#endif
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#ifndef SCI_MIN_IO_REQUESTS
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/**
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* This constant defines the minimum number of IO request objects that
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* can be supported for the SCU Driver Standard (SDS) library. This #
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* can be configured for minimum memory environments to any value less
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* than SCI_MAX_IO_REQUESTS.
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*/
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#define SCI_MIN_IO_REQUESTS (1)
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#endif
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#ifndef SCI_MAX_SCATTER_GATHER_ELEMENTS
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/**
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* This constant defines the maximum number of Scatter-Gather Elements
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* to be used by any SCI component.
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*
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* Note: number of elements must be an even number, since descriptors
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* posted to hardware always contain pairs of elements (with second
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* element set to zeroes if not needed).
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*/
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#define __MAXPHYS_ELEMENTS ((maxphys / PAGE_SIZE) + 1)
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#define SCI_MAX_SCATTER_GATHER_ELEMENTS ((__MAXPHYS_ELEMENTS + 1) & ~0x1)
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#endif
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#ifndef SCI_MIN_SCATTER_GATHER_ELEMENTS
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/**
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* This constant defines the minimum number of Scatter-Gather Elements
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* to be used by any SCI component.
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*/
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#define SCI_MIN_SCATTER_GATHER_ELEMENTS 1
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#endif
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#else // SCIC_SDS_4_ENABLED
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#error "SCI Core configuration left unspecified (e.g. SCIC_SDS_4_ENABLED)"
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#endif // SCIC_SDS_4_ENABLED
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/**
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* This constant defines the maximum number of PCI devices that can be supported
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* by the driver.
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*/
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#define SCI_MAX_PCI_DEVICES (2)
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/**
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* This constant defines the maximum number of controllers that can
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* occur in a single silicon package.
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*/
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#define SCI_MAX_CONTROLLERS_PER_PCI_DEVICE (2)
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/**
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* This constant defines the maximum number of controllers that can
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* be supported by a library object. The user specified maximum controller
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* count must be less than or equal to this number. This is a driver
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* specific constant that is not tied to silicon capabilities.
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*/
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#if !defined(SCI_MAX_CONTROLLERS)
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#define SCI_MAX_CONTROLLERS (2)
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#endif
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#ifndef SCI_MAX_MSIX_MESSAGES_PER_CONTROLLER
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/**
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* This constant defines the maximum number of MSI-X interrupt vectors/messages
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* supported for an SCU hardware controller instance.
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*/
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#define SCI_MAX_MSIX_MESSAGES_PER_CONTROLLER (2)
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#endif
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/**
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* This constant defines the maximum number of MSI-X interrupt vectors/messages
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* supported for an SCU device.
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*/
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#define SCI_MAX_MSIX_MESSAGES \
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(SCI_MAX_MSIX_MESSAGES_PER_CONTROLLER * SCI_MAX_CONTROLLERS)
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/**
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* The maximum number of supported domain objects is currently tied to the
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* maximum number of support port objects.
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*/
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#define SCI_MAX_DOMAINS SCI_MAX_PORTS
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // _SCI_CONTROLLER_CONSTANTS_H_
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