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