90a1633b23
While VFIO doesn't allow us to map complete BARs with MSI-X tables, it does allow us to map around them in PAGE_SIZE granularity. There might be adapters that provide their registers in the same BAR but on a different page. For example, Intel's NVME adapter, though not a network adapter, provides only one MMIO BAR that contains the MSI-X table. Signed-off-by: Dan Aloni <dan@kernelim.com> Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 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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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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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#ifndef EAL_VFIO_H_
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#define EAL_VFIO_H_
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/*
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* determine if VFIO is present on the system
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*/
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#ifdef RTE_EAL_VFIO
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#include <linux/version.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
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#include <linux/vfio.h>
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
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#define RTE_PCI_MSIX_TABLE_BIR 0x7
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#define RTE_PCI_MSIX_TABLE_OFFSET 0xfffffff8
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#define RTE_PCI_MSIX_FLAGS_QSIZE 0x07ff
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#else
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#define RTE_PCI_MSIX_TABLE_BIR PCI_MSIX_TABLE_BIR
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#define RTE_PCI_MSIX_TABLE_OFFSET PCI_MSIX_TABLE_OFFSET
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#define RTE_PCI_MSIX_FLAGS_QSIZE PCI_MSIX_FLAGS_QSIZE
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#endif
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#define VFIO_PRESENT
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#endif /* kernel version */
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#endif /* RTE_EAL_VFIO */
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#endif /* EAL_VFIO_H_ */
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