667c3fc0f6
Platform (N1SDP). Neoverse N1 is a high-performance ARM microarchitecture designed by the ARM Holdings for the server market. The PCI part on N1SDP was shipped untested and suffers from some integration issues. For instance accessing to not existing BDFs causes System Error (SError) exception. To mitigate this, the firmware scans the bus, catches SErrors and creates a table with valid BDFs. That allows us to filter-out accesses to invalid BDFs in this driver. Also the root complex config space (BDF == 0) has an unusual location in memory map, so remapping accesses to it is required. Finally, the config space is restricted to 32-bit accesses only. This was tested on the ARM boxes kindly provided by the ARM Ltd to the DARPA CHERI Project. In collaboration with: andrew Reviewed by: andrew Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D23349
48 lines
1.9 KiB
C
48 lines
1.9 KiB
C
/*-
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* Copyright (C) 2018 Cavium Inc.
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* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
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* Copyright (c) 2014 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under
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* the sponsorship of the FreeBSD Foundation.
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _DEV_PCI_PCI_HOST_GENERIC_ACPI_H_
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#define _DEV_PCI_PCI_HOST_GENERIC_ACPI_H_
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struct generic_pcie_acpi_softc {
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struct generic_pcie_core_softc base;
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int segment;
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ACPI_BUFFER ap_prt; /* interrupt routing table */
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};
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DECLARE_CLASS(generic_pcie_acpi_driver);
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int pci_host_generic_acpi_init(device_t dev);
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#endif /* !_DEV_PCI_PCI_HOST_GENERIC_ACPI_H_ */
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