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("$FreeBSD$"); 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 static int 113 thunder_pem_fdt_alloc_msi(device_t pci, device_t child, int count, int maxcount, 114 int *irqs) 115 { 116 phandle_t msi_parent; 117 int err; 118 119 err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), 120 &msi_parent, NULL); 121 if (err != 0) 122 return (err); 123 return (intr_alloc_msi(pci, child, msi_parent, count, maxcount, 124 irqs)); 125 } 126 127 static int 128 thunder_pem_fdt_release_msi(device_t pci, device_t child, int count, int *irqs) 129 { 130 phandle_t msi_parent; 131 int err; 132 133 err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), 134 &msi_parent, NULL); 135 if (err != 0) 136 return (err); 137 return (intr_release_msi(pci, child, msi_parent, count, irqs)); 138 } 139 140 static int 141 thunder_pem_fdt_alloc_msix(device_t pci, device_t child, int *irq) 142 { 143 phandle_t msi_parent; 144 int err; 145 146 err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), 147 &msi_parent, NULL); 148 if (err != 0) 149 return (err); 150 return (intr_alloc_msix(pci, child, msi_parent, irq)); 151 } 152 153 static int 154 thunder_pem_fdt_release_msix(device_t pci, device_t child, int irq) 155 { 156 phandle_t msi_parent; 157 int err; 158 159 err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), 160 &msi_parent, NULL); 161 if (err != 0) 162 return (err); 163 return (intr_release_msix(pci, child, msi_parent, irq)); 164 } 165 166 static int 167 thunder_pem_fdt_map_msi(device_t pci, device_t child, int irq, uint64_t *addr, 168 uint32_t *data) 169 { 170 phandle_t msi_parent; 171 int err; 172 173 err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), 174 &msi_parent, NULL); 175 if (err != 0) 176 return (err); 177 return (intr_map_msi(pci, child, msi_parent, irq, addr, data)); 178 } 179 180 static int 181 thunder_pem_fdt_get_id(device_t dev, device_t child, enum pci_id_type type, 182 uintptr_t *id) 183 { 184 phandle_t node; 185 int err; 186 uint32_t rid; 187 uint16_t pci_rid; 188 189 if (type != PCI_ID_MSI) 190 return (pcib_get_id(dev, child, type, id)); 191 192 node = ofw_bus_get_node(dev); 193 pci_rid = pci_get_rid(child); 194 195 err = ofw_bus_msimap(node, pci_rid, NULL, &rid); 196 if (err != 0) 197 return (err); 198 *id = rid; 199 200 return (0); 201 } 202