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 #include <dev/pci/pci_host_generic.h> 49 50 #include "thunder_pcie_common.h" 51 52 #ifdef THUNDERX_PASS_1_1_ERRATA 53 static struct resource * thunder_pcie_fdt_alloc_resource(device_t, device_t, 54 int, int *, rman_res_t, rman_res_t, rman_res_t, u_int); 55 #endif 56 static int thunder_pcie_fdt_attach(device_t); 57 static int thunder_pcie_fdt_probe(device_t); 58 59 static device_method_t thunder_pcie_fdt_methods[] = { 60 /* Device interface */ 61 DEVMETHOD(device_probe, thunder_pcie_fdt_probe), 62 DEVMETHOD(device_attach, thunder_pcie_fdt_attach), 63 #ifdef THUNDERX_PASS_1_1_ERRATA 64 DEVMETHOD(bus_alloc_resource, thunder_pcie_fdt_alloc_resource), 65 #endif 66 67 /* End */ 68 DEVMETHOD_END 69 }; 70 71 DEFINE_CLASS_1(pcib, thunder_pcie_fdt_driver, thunder_pcie_fdt_methods, 72 sizeof(struct generic_pcie_softc), generic_pcie_driver); 73 74 static devclass_t thunder_pcie_fdt_devclass; 75 76 DRIVER_MODULE(thunder_pcib, simplebus, thunder_pcie_fdt_driver, 77 thunder_pcie_fdt_devclass, 0, 0); 78 DRIVER_MODULE(thunder_pcib, ofwbus, thunder_pcie_fdt_driver, 79 thunder_pcie_fdt_devclass, 0, 0); 80 81 82 static int 83 thunder_pcie_fdt_probe(device_t dev) 84 { 85 86 /* Check if we're running on Cavium ThunderX */ 87 if (!CPU_MATCH(CPU_IMPL_MASK | CPU_PART_MASK, 88 CPU_IMPL_CAVIUM, CPU_PART_THUNDER, 0, 0)) 89 return (ENXIO); 90 91 if (!ofw_bus_status_okay(dev)) 92 return (ENXIO); 93 94 if (ofw_bus_is_compatible(dev, "pci-host-ecam-generic") || 95 ofw_bus_is_compatible(dev, "cavium,thunder-pcie") || 96 ofw_bus_is_compatible(dev, "cavium,pci-host-thunder-ecam")) { 97 device_set_desc(dev, "Cavium Integrated PCI/PCI-E Controller"); 98 return (BUS_PROBE_DEFAULT); 99 } 100 101 return (ENXIO); 102 } 103 104 static int 105 thunder_pcie_fdt_attach(device_t dev) 106 { 107 struct generic_pcie_softc *sc; 108 109 sc = device_get_softc(dev); 110 thunder_pcie_identify_ecam(dev, &sc->ecam); 111 112 return (pci_host_generic_attach(dev)); 113 } 114 115 #ifdef THUNDERX_PASS_1_1_ERRATA 116 static struct resource * 117 thunder_pcie_fdt_alloc_resource(device_t dev, device_t child, int type, int *rid, 118 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 119 { 120 121 if ((int)ofw_bus_get_node(child) > 0) 122 return (pci_host_generic_alloc_resource(dev, child, 123 type, rid, start, end, count, flags)); 124 125 return (thunder_pcie_alloc_resource(dev, child, 126 type, rid, start, end, count, flags)); 127 } 128 #endif 129