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