pci_host_generic.h

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    1 /*
    2  * Copyright (c) 2015, 2020 Ruslan Bukin <br@bsdpad.com>
    3  * Copyright (c) 2015 The FreeBSD Foundation
    4  * All rights reserved.
    5  *
    6  * This software was developed by Semihalf.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *
   30  * $FreeBSD$
   31  *
   32  */
   33 
   34 #ifndef __PCI_HOST_GENERIC_H_
   35 #define __PCI_HOST_GENERIC_H_
   36 
   37 #include "pci_if.h"
   38 
   39 /* Assembling ECAM Configuration Address */
   40 #define PCIE_BUS_SHIFT          20
   41 #define PCIE_SLOT_SHIFT         15
   42 #define PCIE_FUNC_SHIFT         12
   43 #define PCIE_BUS_MASK           0xFF
   44 #define PCIE_SLOT_MASK          0x1F
   45 #define PCIE_FUNC_MASK          0x07
   46 #define PCIE_REG_MASK           0xFFF
   47 
   48 #define PCIE_ADDR_OFFSET(bus, slot, func, reg)                  \
   49         ((((bus) & PCIE_BUS_MASK) << PCIE_BUS_SHIFT)    |       \
   50         (((slot) & PCIE_SLOT_MASK) << PCIE_SLOT_SHIFT)  |       \
   51         (((func) & PCIE_FUNC_MASK) << PCIE_FUNC_SHIFT)  |       \
   52         ((reg) & PCIE_REG_MASK))
   53 
   54 #define MAX_RANGES_TUPLES       16
   55 #define MIN_RANGES_TUPLES       2
   56 
   57 struct pcie_range {
   58         uint64_t        pci_base;
   59         uint64_t        phys_base;
   60         uint64_t        size;
   61         uint64_t        flags;
   62 #define FLAG_TYPE(x)            ((x) & FLAG_TYPE_MASK)
   63 #define FLAG_TYPE_MASK          0x3
   64 #define FLAG_TYPE_INVALID       0x0
   65 #define FLAG_TYPE_IO            0x1
   66 #define FLAG_TYPE_MEM           0x2
   67 #define FLAG_TYPE_PMEM          0x3
   68 };
   69 
   70 struct generic_pcie_core_softc {
   71         struct pcie_range       ranges[MAX_RANGES_TUPLES];
   72         int                     nranges;
   73         int                     coherent;
   74         bool                    has_pmem;
   75         struct rman             pmem_rman;
   76         struct rman             mem_rman;
   77         struct rman             io_rman;
   78         struct resource         *res;
   79         struct resource         *res1;
   80         int                     bus_start;
   81         int                     bus_end;
   82         int                     ecam;
   83         bus_space_tag_t         bst;
   84         bus_space_handle_t      bsh;
   85         device_t                dev;
   86         bus_space_handle_t      ioh;
   87         bus_dma_tag_t           dmat;
   88         uint32_t                quirks;
   89 };
   90 
   91 /* Quirks */
   92 #define PCIE_ECAM_DESIGNWARE_QUIRK      (1 << 0)
   93 
   94 DECLARE_CLASS(generic_pcie_core_driver);
   95 
   96 int pci_host_generic_core_attach(device_t);
   97 int pci_host_generic_core_detach(device_t);
   98 struct resource *pci_host_generic_core_alloc_resource(device_t, device_t, int,
   99     int *, rman_res_t, rman_res_t, rman_res_t, u_int);
  100 int pci_host_generic_core_release_resource(device_t, device_t, int, int,
  101     struct resource *);
  102 
  103 #endif /* __PCI_HOST_GENERIC_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/dev/pci/pci_host_generic.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/pci_host_generic.h