2445e7c84e
If Enhanced Allocation is not used, we can't allocate any random
range. All internal devices have hardcoded place where they can
be located within PCI address space. Fortunately, we can read
this value from BAR.
Obtained from: Semihalf
Sponsored by: Cavium
Approved by: cognet (mentor)
Reviewed by: zbb
Differential revision: https://reviews.freebsd.org/D5455
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*
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* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
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* Copyright (c) 2015 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf.
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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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*
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* $FreeBSD$
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*
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*/
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#ifndef __PCI_HOST_GENERIC_H_
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#define __PCI_HOST_GENERIC_H_
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#define MAX_RANGES_TUPLES 16
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#define MIN_RANGES_TUPLES 2
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struct pcie_range {
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uint64_t pci_base;
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uint64_t phys_base;
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uint64_t size;
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uint64_t flags;
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#define FLAG_IO (1 << 0)
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#define FLAG_MEM (1 << 1)
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};
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struct generic_pcie_softc {
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struct pcie_range ranges[MAX_RANGES_TUPLES];
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int nranges;
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struct rman mem_rman;
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struct rman io_rman;
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struct resource *res;
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struct resource *res1;
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int ecam;
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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device_t dev;
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bus_space_handle_t ioh;
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#ifdef FDT
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struct ofw_bus_iinfo pci_iinfo;
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#endif
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};
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extern devclass_t generic_pcie_devclass;
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DECLARE_CLASS(generic_pcie_driver);
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struct resource *pci_host_generic_alloc_resource(device_t,
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device_t, int, int *, rman_res_t, rman_res_t, rman_res_t, u_int);
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int pci_host_generic_attach(device_t);
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#endif /* __PCI_HOST_GENERIC_H_ */
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