1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (C) 2007-2008 Semihalf, Rafal Jaworowski 5 * Copyright (C) 2006-2007 Semihalf, Piotr Kruszynski 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 20 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 22 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * From: FreeBSD: head/sys/dev/tsec/if_tsec_ocp.c 188712 2009-02-17 14:59:47Z raj 29 */ 30 31 /* 32 * FDT 'simple-bus' attachment for Freescale TSEC controller. 33 */ 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/endian.h> 40 #include <sys/lock.h> 41 #include <sys/mbuf.h> 42 #include <sys/mutex.h> 43 #include <sys/kernel.h> 44 #include <sys/module.h> 45 #include <sys/socket.h> 46 #include <sys/sysctl.h> 47 48 #include <sys/bus.h> 49 #include <machine/bus.h> 50 #include <sys/rman.h> 51 #include <machine/resource.h> 52 53 #include <net/ethernet.h> 54 #include <net/if.h> 55 #include <net/if_media.h> 56 57 #include <dev/fdt/fdt_common.h> 58 #include <dev/mii/mii.h> 59 #include <dev/mii/miivar.h> 60 #include <dev/ofw/ofw_bus.h> 61 #include <dev/ofw/ofw_bus_subr.h> 62 #include <dev/ofw/openfirm.h> 63 64 #include <dev/tsec/if_tsec.h> 65 #include <dev/tsec/if_tsecreg.h> 66 67 #include "miibus_if.h" 68 69 #define TSEC_RID_TXIRQ 0 70 #define TSEC_RID_RXIRQ 1 71 #define TSEC_RID_ERRIRQ 2 72 73 static int tsec_fdt_probe(device_t dev); 74 static int tsec_fdt_attach(device_t dev); 75 static int tsec_fdt_detach(device_t dev); 76 static int tsec_setup_intr(struct tsec_softc *sc, struct resource **ires, 77 void **ihand, int *irid, driver_intr_t handler, const char *iname); 78 static void tsec_release_intr(struct tsec_softc *sc, struct resource *ires, 79 void *ihand, int irid, const char *iname); 80 81 static device_method_t tsec_methods[] = { 82 /* Device interface */ 83 DEVMETHOD(device_probe, tsec_fdt_probe), 84 DEVMETHOD(device_attach, tsec_fdt_attach), 85 DEVMETHOD(device_detach, tsec_fdt_detach), 86 87 DEVMETHOD(device_shutdown, tsec_shutdown), 88 DEVMETHOD(device_suspend, tsec_suspend), 89 DEVMETHOD(device_resume, tsec_resume), 90 91 /* MII interface */ 92 DEVMETHOD(miibus_readreg, tsec_miibus_readreg), 93 DEVMETHOD(miibus_writereg, tsec_miibus_writereg), 94 DEVMETHOD(miibus_statchg, tsec_miibus_statchg), 95 96 DEVMETHOD_END 97 }; 98 99 static driver_t tsec_fdt_driver = { 100 "tsec", 101 tsec_methods, 102 sizeof(struct tsec_softc), 103 }; 104 105 DRIVER_MODULE(tsec, simplebus, tsec_fdt_driver, 0, 0); 106 107 static int 108 tsec_fdt_probe(device_t dev) 109 { 110 struct tsec_softc *sc; 111 uint32_t id; 112 113 if (!ofw_bus_status_okay(dev)) 114 return (ENXIO); 115 116 if (ofw_bus_get_type(dev) == NULL || 117 strcmp(ofw_bus_get_type(dev), "network") != 0) 118 return (ENXIO); 119 120 if (!ofw_bus_is_compatible(dev, "gianfar") && 121 !ofw_bus_is_compatible(dev, "fsl,etsec2")) 122 return (ENXIO); 123 124 sc = device_get_softc(dev); 125 126 /* 127 * Device trees with "fsl,etsec2" compatible nodes don't have a reg 128 * property, as it's been relegated to the queue-group children. 129 */ 130 if (ofw_bus_is_compatible(dev, "fsl,etsec2")) 131 sc->is_etsec = 1; 132 else { 133 sc->sc_rrid = 0; 134 sc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_rrid, 135 RF_ACTIVE); 136 if (sc->sc_rres == NULL) 137 return (ENXIO); 138 139 sc->sc_bas.bsh = rman_get_bushandle(sc->sc_rres); 140 sc->sc_bas.bst = rman_get_bustag(sc->sc_rres); 141 142 /* Check if we are eTSEC (enhanced TSEC) */ 143 id = TSEC_READ(sc, TSEC_REG_ID); 144 sc->is_etsec = ((id >> 16) == TSEC_ETSEC_ID) ? 1 : 0; 145 id |= TSEC_READ(sc, TSEC_REG_ID2); 146 147 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_rrid, sc->sc_rres); 148 149 if (id == 0) { 150 device_printf(dev, "could not identify TSEC type\n"); 151 return (ENXIO); 152 } 153 } 154 155 if (sc->is_etsec) 156 device_set_desc(dev, "Enhanced Three-Speed Ethernet Controller"); 157 else 158 device_set_desc(dev, "Three-Speed Ethernet Controller"); 159 160 return (BUS_PROBE_DEFAULT); 161 } 162 163 static int 164 tsec_fdt_attach(device_t dev) 165 { 166 struct tsec_softc *sc; 167 struct resource_list *rl; 168 phandle_t child, mdio, phy; 169 int acells, scells; 170 int error = 0; 171 172 sc = device_get_softc(dev); 173 sc->dev = dev; 174 sc->node = ofw_bus_get_node(dev); 175 176 if (fdt_addrsize_cells(sc->node, &acells, &scells) != 0) { 177 acells = 1; 178 scells = 1; 179 } 180 if (ofw_bus_is_compatible(dev, "fsl,etsec2")) { 181 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev); 182 183 /* 184 * TODO: Add all children resources to the list. Will be 185 * required to support multigroup mode. 186 */ 187 child = OF_child(sc->node); 188 ofw_bus_reg_to_rl(dev, child, acells, scells, rl); 189 ofw_bus_intr_to_rl(dev, child, rl, NULL); 190 } 191 192 /* Get phy address from fdt */ 193 if (OF_getencprop(sc->node, "phy-handle", &phy, sizeof(phy)) <= 0) { 194 device_printf(dev, "PHY not found in device tree"); 195 return (ENXIO); 196 } 197 198 phy = OF_node_from_xref(phy); 199 mdio = OF_parent(phy); 200 OF_decode_addr(mdio, 0, &sc->phy_bst, &sc->phy_bsh, NULL); 201 OF_getencprop(phy, "reg", &sc->phyaddr, sizeof(sc->phyaddr)); 202 203 /* 204 * etsec2 MDIO nodes are given the MDIO module base address, so we need 205 * to add the MII offset to get the PHY registers. 206 */ 207 if (ofw_bus_node_is_compatible(mdio, "fsl,etsec2-mdio")) 208 sc->phy_regoff = TSEC_REG_MIIBASE; 209 210 /* Init timer */ 211 callout_init(&sc->tsec_callout, 1); 212 213 /* Init locks */ 214 mtx_init(&sc->transmit_lock, device_get_nameunit(dev), "TSEC TX lock", 215 MTX_DEF); 216 mtx_init(&sc->receive_lock, device_get_nameunit(dev), "TSEC RX lock", 217 MTX_DEF); 218 mtx_init(&sc->ic_lock, device_get_nameunit(dev), "TSEC IC lock", 219 MTX_DEF); 220 221 /* Allocate IO memory for TSEC registers */ 222 sc->sc_rrid = 0; 223 sc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_rrid, 224 RF_ACTIVE); 225 if (sc->sc_rres == NULL) { 226 device_printf(dev, "could not allocate IO memory range!\n"); 227 goto fail1; 228 } 229 sc->sc_bas.bsh = rman_get_bushandle(sc->sc_rres); 230 sc->sc_bas.bst = rman_get_bustag(sc->sc_rres); 231 232 /* TSEC attach */ 233 if (tsec_attach(sc) != 0) { 234 device_printf(dev, "could not be configured\n"); 235 goto fail2; 236 } 237 238 /* Set up interrupts (TX/RX/ERR) */ 239 sc->sc_transmit_irid = TSEC_RID_TXIRQ; 240 error = tsec_setup_intr(sc, &sc->sc_transmit_ires, 241 &sc->sc_transmit_ihand, &sc->sc_transmit_irid, 242 tsec_transmit_intr, "TX"); 243 if (error) 244 goto fail2; 245 246 sc->sc_receive_irid = TSEC_RID_RXIRQ; 247 error = tsec_setup_intr(sc, &sc->sc_receive_ires, 248 &sc->sc_receive_ihand, &sc->sc_receive_irid, 249 tsec_receive_intr, "RX"); 250 if (error) 251 goto fail3; 252 253 sc->sc_error_irid = TSEC_RID_ERRIRQ; 254 error = tsec_setup_intr(sc, &sc->sc_error_ires, 255 &sc->sc_error_ihand, &sc->sc_error_irid, 256 tsec_error_intr, "ERR"); 257 if (error) 258 goto fail4; 259 260 return (0); 261 262 fail4: 263 tsec_release_intr(sc, sc->sc_receive_ires, sc->sc_receive_ihand, 264 sc->sc_receive_irid, "RX"); 265 fail3: 266 tsec_release_intr(sc, sc->sc_transmit_ires, sc->sc_transmit_ihand, 267 sc->sc_transmit_irid, "TX"); 268 fail2: 269 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_rrid, sc->sc_rres); 270 fail1: 271 mtx_destroy(&sc->receive_lock); 272 mtx_destroy(&sc->transmit_lock); 273 return (ENXIO); 274 } 275 276 static int 277 tsec_setup_intr(struct tsec_softc *sc, struct resource **ires, void **ihand, 278 int *irid, driver_intr_t handler, const char *iname) 279 { 280 int error; 281 282 *ires = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ, irid, RF_ACTIVE); 283 if (*ires == NULL) { 284 device_printf(sc->dev, "could not allocate %s IRQ\n", iname); 285 return (ENXIO); 286 } 287 error = bus_setup_intr(sc->dev, *ires, INTR_TYPE_NET | INTR_MPSAFE, 288 NULL, handler, sc, ihand); 289 if (error) { 290 device_printf(sc->dev, "failed to set up %s IRQ\n", iname); 291 if (bus_release_resource(sc->dev, SYS_RES_IRQ, *irid, *ires)) 292 device_printf(sc->dev, "could not release %s IRQ\n", iname); 293 *ires = NULL; 294 return (error); 295 } 296 return (0); 297 } 298 299 static void 300 tsec_release_intr(struct tsec_softc *sc, struct resource *ires, void *ihand, 301 int irid, const char *iname) 302 { 303 int error; 304 305 if (ires == NULL) 306 return; 307 308 error = bus_teardown_intr(sc->dev, ires, ihand); 309 if (error) 310 device_printf(sc->dev, "bus_teardown_intr() failed for %s intr" 311 ", error %d\n", iname, error); 312 313 error = bus_release_resource(sc->dev, SYS_RES_IRQ, irid, ires); 314 if (error) 315 device_printf(sc->dev, "bus_release_resource() failed for %s " 316 "intr, error %d\n", iname, error); 317 } 318 319 static int 320 tsec_fdt_detach(device_t dev) 321 { 322 struct tsec_softc *sc; 323 int error; 324 325 sc = device_get_softc(dev); 326 327 /* Wait for stopping watchdog */ 328 callout_drain(&sc->tsec_callout); 329 330 /* Stop and release all interrupts */ 331 tsec_release_intr(sc, sc->sc_transmit_ires, sc->sc_transmit_ihand, 332 sc->sc_transmit_irid, "TX"); 333 tsec_release_intr(sc, sc->sc_receive_ires, sc->sc_receive_ihand, 334 sc->sc_receive_irid, "RX"); 335 tsec_release_intr(sc, sc->sc_error_ires, sc->sc_error_ihand, 336 sc->sc_error_irid, "ERR"); 337 338 /* TSEC detach */ 339 tsec_detach(sc); 340 341 /* Free IO memory handler */ 342 if (sc->sc_rres) { 343 error = bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_rrid, 344 sc->sc_rres); 345 if (error) 346 device_printf(dev, "bus_release_resource() failed for" 347 " IO memory, error %d\n", error); 348 } 349 350 /* Destroy locks */ 351 mtx_destroy(&sc->receive_lock); 352 mtx_destroy(&sc->transmit_lock); 353 mtx_destroy(&sc->ic_lock); 354 return (0); 355 } 356 357 void 358 tsec_get_hwaddr(struct tsec_softc *sc, uint8_t *addr) 359 { 360 union { 361 uint32_t reg[2]; 362 uint8_t addr[6]; 363 } hw; 364 int i; 365 366 hw.reg[0] = hw.reg[1] = 0; 367 368 /* Retrieve the hardware address from the device tree. */ 369 i = OF_getprop(sc->node, "local-mac-address", (void *)hw.addr, 6); 370 if (i == 6 && (hw.reg[0] != 0 || hw.reg[1] != 0)) { 371 bcopy(hw.addr, addr, 6); 372 return; 373 } 374 375 /* Also try the mac-address property, which is second-best */ 376 i = OF_getprop(sc->node, "mac-address", (void *)hw.addr, 6); 377 if (i == 6 && (hw.reg[0] != 0 || hw.reg[1] != 0)) { 378 bcopy(hw.addr, addr, 6); 379 return; 380 } 381 382 /* 383 * Fall back -- use the currently programmed address in the hope that 384 * it was set be firmware... 385 */ 386 hw.reg[0] = TSEC_READ(sc, TSEC_REG_MACSTNADDR1); 387 hw.reg[1] = TSEC_READ(sc, TSEC_REG_MACSTNADDR2); 388 for (i = 0; i < 6; i++) 389 addr[5-i] = hw.addr[i]; 390 } 391