1 /*- 2 * Copyright (c) 2015-2016 Chelsio Communications, Inc. 3 * All rights reserved. 4 * Written by: John Baldwin <jhb@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/bus.h> 33 #include <sys/kernel.h> 34 #include <sys/module.h> 35 #include <sys/systm.h> 36 #include <dev/pci/pcivar.h> 37 38 #ifdef PCI_IOV 39 #include <sys/nv.h> 40 #include <sys/iov_schema.h> 41 #include <dev/pci/pci_iov.h> 42 #endif 43 44 #include "t4_if.h" 45 46 struct t4iov_softc { 47 device_t sc_dev; 48 device_t sc_main; 49 bool sc_attached; 50 }; 51 52 struct { 53 uint16_t device; 54 char *desc; 55 } t4iov_pciids[] = { 56 {0x4000, "Chelsio T440-dbg"}, 57 {0x4001, "Chelsio T420-CR"}, 58 {0x4002, "Chelsio T422-CR"}, 59 {0x4003, "Chelsio T440-CR"}, 60 {0x4004, "Chelsio T420-BCH"}, 61 {0x4005, "Chelsio T440-BCH"}, 62 {0x4006, "Chelsio T440-CH"}, 63 {0x4007, "Chelsio T420-SO"}, 64 {0x4008, "Chelsio T420-CX"}, 65 {0x4009, "Chelsio T420-BT"}, 66 {0x400a, "Chelsio T404-BT"}, 67 {0x400e, "Chelsio T440-LP-CR"}, 68 }, t5iov_pciids[] = { 69 {0x5000, "Chelsio T580-dbg"}, 70 {0x5001, "Chelsio T520-CR"}, /* 2 x 10G */ 71 {0x5002, "Chelsio T522-CR"}, /* 2 x 10G, 2 X 1G */ 72 {0x5003, "Chelsio T540-CR"}, /* 4 x 10G */ 73 {0x5007, "Chelsio T520-SO"}, /* 2 x 10G, nomem */ 74 {0x5009, "Chelsio T520-BT"}, /* 2 x 10GBaseT */ 75 {0x500a, "Chelsio T504-BT"}, /* 4 x 1G */ 76 {0x500d, "Chelsio T580-CR"}, /* 2 x 40G */ 77 {0x500e, "Chelsio T540-LP-CR"}, /* 4 x 10G */ 78 {0x5010, "Chelsio T580-LP-CR"}, /* 2 x 40G */ 79 {0x5011, "Chelsio T520-LL-CR"}, /* 2 x 10G */ 80 {0x5012, "Chelsio T560-CR"}, /* 1 x 40G, 2 x 10G */ 81 {0x5014, "Chelsio T580-LP-SO-CR"}, /* 2 x 40G, nomem */ 82 {0x5015, "Chelsio T502-BT"}, /* 2 x 1G */ 83 #ifdef notyet 84 {0x5004, "Chelsio T520-BCH"}, 85 {0x5005, "Chelsio T540-BCH"}, 86 {0x5006, "Chelsio T540-CH"}, 87 {0x5008, "Chelsio T520-CX"}, 88 {0x500b, "Chelsio B520-SR"}, 89 {0x500c, "Chelsio B504-BT"}, 90 {0x500f, "Chelsio Amsterdam"}, 91 {0x5013, "Chelsio T580-CHR"}, 92 #endif 93 }; 94 95 static int t4iov_attach_child(device_t dev); 96 97 static int 98 t4iov_probe(device_t dev) 99 { 100 uint16_t d; 101 size_t i; 102 103 d = pci_get_device(dev); 104 for (i = 0; i < nitems(t4iov_pciids); i++) { 105 if (d == t4iov_pciids[i].device) { 106 device_set_desc(dev, t4iov_pciids[i].desc); 107 return (BUS_PROBE_DEFAULT); 108 } 109 } 110 return (ENXIO); 111 } 112 113 static int 114 t5iov_probe(device_t dev) 115 { 116 uint16_t d; 117 size_t i; 118 119 d = pci_get_device(dev); 120 for (i = 0; i < nitems(t5iov_pciids); i++) { 121 if (d == t5iov_pciids[i].device) { 122 device_set_desc(dev, t5iov_pciids[i].desc); 123 return (BUS_PROBE_DEFAULT); 124 } 125 } 126 return (ENXIO); 127 } 128 129 static int 130 t4iov_attach(device_t dev) 131 { 132 struct t4iov_softc *sc; 133 134 sc = device_get_softc(dev); 135 sc->sc_dev = dev; 136 137 sc->sc_main = pci_find_dbsf(pci_get_domain(dev), pci_get_bus(dev), 138 pci_get_slot(dev), 4); 139 if (T4_IS_MAIN_READY(sc->sc_main) == 0) 140 return (t4iov_attach_child(dev)); 141 return (0); 142 } 143 144 static int 145 t4iov_attach_child(device_t dev) 146 { 147 struct t4iov_softc *sc; 148 #ifdef PCI_IOV 149 nvlist_t *pf_schema, *vf_schema; 150 #endif 151 int error, unit; 152 153 sc = device_get_softc(dev); 154 MPASS(!sc->sc_attached); 155 156 /* 157 * PF0-3 are associated with a specific port on the NIC (PF0 158 * with port 0, etc.). Ask the PF4 driver for the unit number 159 * for this function's associated port to determine if the port 160 * is present. 161 */ 162 error = T4_READ_PORT_UNIT(sc->sc_main, pci_get_function(dev), &unit); 163 if (error) 164 return (0); 165 166 #ifdef PCI_IOV 167 pf_schema = pci_iov_schema_alloc_node(); 168 vf_schema = pci_iov_schema_alloc_node(); 169 error = pci_iov_attach(dev, pf_schema, vf_schema); 170 if (error) { 171 device_printf(dev, "Failed to initialize SR-IOV: %d\n", error); 172 return (0); 173 } 174 #endif 175 176 sc->sc_attached = true; 177 return (0); 178 } 179 180 static int 181 t4iov_detach_child(device_t dev) 182 { 183 struct t4iov_softc *sc; 184 #ifdef PCI_IOV 185 int error; 186 #endif 187 188 sc = device_get_softc(dev); 189 if (!sc->sc_attached) 190 return (0); 191 192 #ifdef PCI_IOV 193 error = pci_iov_detach(dev); 194 if (error != 0) { 195 device_printf(dev, "Failed to disable SR-IOV\n"); 196 return (error); 197 } 198 #endif 199 200 sc->sc_attached = false; 201 return (0); 202 } 203 204 static int 205 t4iov_detach(device_t dev) 206 { 207 struct t4iov_softc *sc; 208 209 sc = device_get_softc(dev); 210 if (sc->sc_attached) 211 return (t4iov_detach_child(dev)); 212 return (0); 213 } 214 215 #ifdef PCI_IOV 216 static int 217 t4iov_iov_init(device_t dev, uint16_t num_vfs, const struct nvlist *config) 218 { 219 220 /* XXX: The Linux driver sets up a vf_monitor task on T4 adapters. */ 221 return (0); 222 } 223 224 static void 225 t4iov_iov_uninit(device_t dev) 226 { 227 } 228 229 static int 230 t4iov_add_vf(device_t dev, uint16_t vfnum, const struct nvlist *config) 231 { 232 233 return (0); 234 } 235 #endif 236 237 static device_method_t t4iov_methods[] = { 238 DEVMETHOD(device_probe, t4iov_probe), 239 DEVMETHOD(device_attach, t4iov_attach), 240 DEVMETHOD(device_detach, t4iov_detach), 241 242 #ifdef PCI_IOV 243 DEVMETHOD(pci_iov_init, t4iov_iov_init), 244 DEVMETHOD(pci_iov_uninit, t4iov_iov_uninit), 245 DEVMETHOD(pci_iov_add_vf, t4iov_add_vf), 246 #endif 247 248 DEVMETHOD(t4_attach_child, t4iov_attach_child), 249 DEVMETHOD(t4_detach_child, t4iov_detach_child), 250 251 DEVMETHOD_END 252 }; 253 254 static driver_t t4iov_driver = { 255 "t4iov", 256 t4iov_methods, 257 sizeof(struct t4iov_softc) 258 }; 259 260 static device_method_t t5iov_methods[] = { 261 DEVMETHOD(device_probe, t5iov_probe), 262 DEVMETHOD(device_attach, t4iov_attach), 263 DEVMETHOD(device_detach, t4iov_detach), 264 265 #ifdef PCI_IOV 266 DEVMETHOD(pci_iov_init, t4iov_iov_init), 267 DEVMETHOD(pci_iov_uninit, t4iov_iov_uninit), 268 DEVMETHOD(pci_iov_add_vf, t4iov_add_vf), 269 #endif 270 271 DEVMETHOD(t4_attach_child, t4iov_attach_child), 272 DEVMETHOD(t4_detach_child, t4iov_detach_child), 273 274 DEVMETHOD_END 275 }; 276 277 static driver_t t5iov_driver = { 278 "t5iov", 279 t5iov_methods, 280 sizeof(struct t4iov_softc) 281 }; 282 283 static devclass_t t4iov_devclass, t5iov_devclass; 284 285 DRIVER_MODULE(t4iov, pci, t4iov_driver, t4iov_devclass, 0, 0); 286 MODULE_VERSION(t4iov, 1); 287 288 DRIVER_MODULE(t5iov, pci, t5iov_driver, t5iov_devclass, 0, 0); 289 MODULE_VERSION(t5iov, 1); 290