The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/arm64/cavium/thunder_pcie_pem_fdt.c

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    1 /*
    2  * Copyright (C) 2016 Cavium Inc.
    3  * All rights reserved.
    4  *
    5  * Developed by Semihalf.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/11.0/sys/arm64/cavium/thunder_pcie_pem_fdt.c 299934 2016-05-16 10:03:57Z andrew $");
   30 
   31 #include "opt_platform.h"
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/malloc.h>
   36 #include <sys/types.h>
   37 #include <sys/sysctl.h>
   38 #include <sys/kernel.h>
   39 #include <sys/rman.h>
   40 #include <sys/module.h>
   41 #include <sys/bus.h>
   42 #include <sys/endian.h>
   43 #include <sys/cpuset.h>
   44 
   45 #include <dev/ofw/openfirm.h>
   46 #include <dev/ofw/ofw_bus.h>
   47 #include <dev/ofw/ofw_bus_subr.h>
   48 
   49 #include <dev/pci/pcivar.h>
   50 #include <dev/pci/pcireg.h>
   51 #include <dev/pci/pcib_private.h>
   52 #include <dev/pci/pci_host_generic.h>
   53 
   54 #include <machine/intr.h>
   55 
   56 #include "thunder_pcie_common.h"
   57 #include "thunder_pcie_pem.h"
   58 
   59 #include "pcib_if.h"
   60 
   61 static int thunder_pem_fdt_probe(device_t);
   62 static int thunder_pem_fdt_alloc_msix(device_t, device_t, int *);
   63 static int thunder_pem_fdt_release_msix(device_t, device_t, int);
   64 static int thunder_pem_fdt_alloc_msi(device_t, device_t, int, int, int *);
   65 static int thunder_pem_fdt_release_msi(device_t, device_t, int, int *);
   66 static int thunder_pem_fdt_map_msi(device_t, device_t, int, uint64_t *,
   67     uint32_t *);
   68 static int thunder_pem_fdt_get_id(device_t, device_t, enum pci_id_type,
   69     uintptr_t *);
   70 
   71 static device_method_t thunder_pem_fdt_methods[] = {
   72         /* Device interface */
   73         DEVMETHOD(device_probe,         thunder_pem_fdt_probe),
   74 
   75         /* pcib interface */
   76         DEVMETHOD(pcib_alloc_msix,      thunder_pem_fdt_alloc_msix),
   77         DEVMETHOD(pcib_release_msix,    thunder_pem_fdt_release_msix),
   78         DEVMETHOD(pcib_alloc_msi,       thunder_pem_fdt_alloc_msi),
   79         DEVMETHOD(pcib_release_msi,     thunder_pem_fdt_release_msi),
   80         DEVMETHOD(pcib_map_msi,         thunder_pem_fdt_map_msi),
   81         DEVMETHOD(pcib_get_id,          thunder_pem_fdt_get_id),
   82 
   83         /* End */
   84         DEVMETHOD_END
   85 };
   86 
   87 DEFINE_CLASS_1(pcib, thunder_pem_fdt_driver, thunder_pem_fdt_methods,
   88     sizeof(struct thunder_pem_softc), thunder_pem_driver);
   89 
   90 static devclass_t thunder_pem_fdt_devclass;
   91 
   92 DRIVER_MODULE(thunder_pem, simplebus, thunder_pem_fdt_driver,
   93     thunder_pem_fdt_devclass, 0, 0);
   94 DRIVER_MODULE(thunder_pem, ofwbus, thunder_pem_fdt_driver,
   95     thunder_pem_fdt_devclass, 0, 0);
   96 
   97 static int
   98 thunder_pem_fdt_probe(device_t dev)
   99 {
  100 
  101         if (!ofw_bus_status_okay(dev))
  102                 return (ENXIO);
  103 
  104         if (ofw_bus_is_compatible(dev, "cavium,pci-host-thunder-pem")) {
  105                 device_set_desc(dev, THUNDER_PEM_DESC);
  106                 return (BUS_PROBE_DEFAULT);
  107         }
  108 
  109         return (ENXIO);
  110 }
  111 
  112 #ifdef INTRNG
  113 static int
  114 thunder_pem_fdt_alloc_msi(device_t pci, device_t child, int count, int maxcount,
  115     int *irqs)
  116 {
  117         phandle_t msi_parent;
  118 
  119         ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), &msi_parent,
  120             NULL);
  121         return (intr_alloc_msi(pci, child, msi_parent, count, maxcount,
  122             irqs));
  123 }
  124 
  125 static int
  126 thunder_pem_fdt_release_msi(device_t pci, device_t child, int count, int *irqs)
  127 {
  128         phandle_t msi_parent;
  129 
  130         ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), &msi_parent,
  131             NULL);
  132         return (intr_release_msi(pci, child, msi_parent, count, irqs));
  133 }
  134 
  135 static int
  136 thunder_pem_fdt_alloc_msix(device_t pci, device_t child, int *irq)
  137 {
  138         phandle_t msi_parent;
  139 
  140         ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), &msi_parent,
  141             NULL);
  142         return (intr_alloc_msix(pci, child, msi_parent, irq));
  143 }
  144 
  145 static int
  146 thunder_pem_fdt_release_msix(device_t pci, device_t child, int irq)
  147 {
  148         phandle_t msi_parent;
  149 
  150         ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), &msi_parent,
  151             NULL);
  152         return (intr_release_msix(pci, child, msi_parent, irq));
  153 }
  154 
  155 static int
  156 thunder_pem_fdt_map_msi(device_t pci, device_t child, int irq, uint64_t *addr,
  157     uint32_t *data)
  158 {
  159         phandle_t msi_parent;
  160 
  161         ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), &msi_parent,
  162             NULL);
  163         return (intr_map_msi(pci, child, msi_parent, irq, addr, data));
  164 }
  165 #else
  166 static int
  167 thunder_pem_fdt_alloc_msi(device_t pci, device_t child, int count, int maxcount,
  168     int *irqs)
  169 {
  170 
  171         return (arm_alloc_msi(pci, child, count, maxcount, irqs));
  172 }
  173 
  174 static int
  175 thunder_pem_fdt_release_msi(device_t pci, device_t child, int count, int *irqs)
  176 {
  177 
  178         return (arm_release_msi(pci, child, count, irqs));
  179 }
  180 
  181 static int
  182 thunder_pem_fdt_alloc_msix(device_t pci, device_t child, int *irq)
  183 {
  184 
  185         return (arm_alloc_msix(pci, child, irq));
  186 }
  187 
  188 static int
  189 thunder_pem_fdt_release_msix(device_t pci, device_t child, int irq)
  190 {
  191 
  192         return (arm_release_msix(pci, child, irq));
  193 }
  194 
  195 static int
  196 thunder_pem_fdt_map_msi(device_t pci, device_t child, int irq, uint64_t *addr,
  197     uint32_t *data)
  198 {
  199 
  200         return (arm_map_msi(pci, child, irq, addr, data));
  201 }
  202 #endif
  203 
  204 static int
  205 thunder_pem_fdt_get_id(device_t dev, device_t child, enum pci_id_type type,
  206     uintptr_t *id)
  207 {
  208         phandle_t node;
  209         uint32_t rid;
  210         uint16_t pci_rid;
  211 
  212         if (type != PCI_ID_MSI)
  213                 return (pcib_get_id(dev, child, type, id));
  214 
  215         node = ofw_bus_get_node(dev);
  216         pci_rid = pci_get_rid(child);
  217 
  218         ofw_bus_msimap(node, pci_rid, NULL, &rid);
  219         *id = rid;
  220 
  221         return (0);
  222 }

Cache object: f86e26f51649a4ab90aefc16897d2ef4


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