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 "opt_platform.h" 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 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/pcireg.h> 50 #include <dev/pci/pcivar.h> 51 #include <dev/pci/pci_host_generic.h> 52 #include <dev/pci/pcib_private.h> 53 54 #include "thunder_pcie_common.h" 55 56 #include "pcib_if.h" 57 58 #ifdef THUNDERX_PASS_1_1_ERRATA 59 static struct resource * thunder_pcie_fdt_alloc_resource(device_t, device_t, 60 int, int *, rman_res_t, rman_res_t, rman_res_t, u_int); 61 #endif 62 static int thunder_pcie_fdt_attach(device_t); 63 static int thunder_pcie_fdt_probe(device_t); 64 static int thunder_pcie_fdt_get_id(device_t, device_t, enum pci_id_type, 65 uintptr_t *); 66 67 static device_method_t thunder_pcie_fdt_methods[] = { 68 /* Device interface */ 69 DEVMETHOD(device_probe, thunder_pcie_fdt_probe), 70 DEVMETHOD(device_attach, thunder_pcie_fdt_attach), 71 #ifdef THUNDERX_PASS_1_1_ERRATA 72 DEVMETHOD(bus_alloc_resource, thunder_pcie_fdt_alloc_resource), 73 #endif 74 75 /* pcib interface */ 76 DEVMETHOD(pcib_get_id, thunder_pcie_fdt_get_id), 77 78 /* End */ 79 DEVMETHOD_END 80 }; 81 82 DEFINE_CLASS_1(pcib, thunder_pcie_fdt_driver, thunder_pcie_fdt_methods, 83 sizeof(struct generic_pcie_softc), generic_pcie_driver); 84 85 static devclass_t thunder_pcie_fdt_devclass; 86 87 DRIVER_MODULE(thunder_pcib, simplebus, thunder_pcie_fdt_driver, 88 thunder_pcie_fdt_devclass, 0, 0); 89 DRIVER_MODULE(thunder_pcib, ofwbus, thunder_pcie_fdt_driver, 90 thunder_pcie_fdt_devclass, 0, 0); 91 92 93 static int 94 thunder_pcie_fdt_probe(device_t dev) 95 { 96 97 /* Check if we're running on Cavium ThunderX */ 98 if (!CPU_MATCH(CPU_IMPL_MASK | CPU_PART_MASK, 99 CPU_IMPL_CAVIUM, CPU_PART_THUNDER, 0, 0)) 100 return (ENXIO); 101 102 if (!ofw_bus_status_okay(dev)) 103 return (ENXIO); 104 105 if (ofw_bus_is_compatible(dev, "pci-host-ecam-generic") || 106 ofw_bus_is_compatible(dev, "cavium,thunder-pcie") || 107 ofw_bus_is_compatible(dev, "cavium,pci-host-thunder-ecam")) { 108 device_set_desc(dev, "Cavium Integrated PCI/PCI-E Controller"); 109 return (BUS_PROBE_DEFAULT); 110 } 111 112 return (ENXIO); 113 } 114 115 static int 116 thunder_pcie_fdt_attach(device_t dev) 117 { 118 struct generic_pcie_softc *sc; 119 120 sc = device_get_softc(dev); 121 thunder_pcie_identify_ecam(dev, &sc->ecam); 122 123 return (pci_host_generic_attach(dev)); 124 } 125 126 static int 127 thunder_pcie_fdt_get_id(device_t pci, device_t child, enum pci_id_type type, 128 uintptr_t *id) 129 { 130 phandle_t node; 131 int bsf; 132 133 if (type != PCI_ID_MSI) 134 return (pcib_get_id(pci, child, type, id)); 135 136 node = ofw_bus_get_node(pci); 137 if (OF_hasprop(node, "msi-map")) 138 return (generic_pcie_get_id(pci, child, type, id)); 139 140 bsf = pci_get_rid(child); 141 *id = (pci_get_domain(child) << PCI_RID_DOMAIN_SHIFT) | bsf; 142 143 return (0); 144 } 145 146 #ifdef THUNDERX_PASS_1_1_ERRATA 147 static struct resource * 148 thunder_pcie_fdt_alloc_resource(device_t dev, device_t child, int type, int *rid, 149 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 150 { 151 152 if ((int)ofw_bus_get_node(child) > 0) 153 return (pci_host_generic_alloc_resource(dev, child, 154 type, rid, start, end, count, flags)); 155 156 return (thunder_pcie_alloc_resource(dev, child, 157 type, rid, start, end, count, flags)); 158 } 159 #endif 160