1166144Smarius/*- 2166144Smarius * Copyright (c) 2006 Marius Strobl <marius@FreeBSD.org> 3166144Smarius * All rights reserved. 4166144Smarius * 5166144Smarius * Redistribution and use in source and binary forms, with or without 6166144Smarius * modification, are permitted provided that the following conditions 7166144Smarius * are met: 8166144Smarius * 1. Redistributions of source code must retain the above copyright 9166144Smarius * notice, this list of conditions and the following disclaimer. 10166144Smarius * 2. Redistributions in binary form must reproduce the above copyright 11166144Smarius * notice, this list of conditions and the following disclaimer in the 12166144Smarius * documentation and/or other materials provided with the distribution. 13166144Smarius * 14166144Smarius * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15166144Smarius * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16166144Smarius * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17166144Smarius * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18166144Smarius * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19166144Smarius * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20166144Smarius * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21166144Smarius * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22166144Smarius * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23166144Smarius * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24166144Smarius * SUCH DAMAGE. 25166144Smarius */ 26166144Smarius 27166144Smarius#include <sys/cdefs.h> 28166144Smarius__FBSDID("$FreeBSD$"); 29166144Smarius 30166144Smarius#include <sys/param.h> 31166144Smarius#include <sys/systm.h> 32166144Smarius#include <sys/bus.h> 33166144Smarius#include <sys/endian.h> 34166144Smarius#include <sys/kernel.h> 35166144Smarius#include <sys/lock.h> 36166144Smarius#include <sys/module.h> 37166144Smarius#include <sys/mutex.h> 38166144Smarius#include <sys/resource.h> 39166144Smarius#include <sys/rman.h> 40166144Smarius#include <sys/socket.h> 41166144Smarius 42166144Smarius#include <dev/ofw/ofw_bus.h> 43166144Smarius 44166144Smarius#include <machine/bus.h> 45166144Smarius#include <machine/ofw_machdep.h> 46166144Smarius#include <machine/resource.h> 47166144Smarius 48166144Smarius#include <net/ethernet.h> 49166144Smarius#include <net/if.h> 50166144Smarius#include <net/if_media.h> 51166144Smarius 52166144Smarius#include <dev/le/lancereg.h> 53166144Smarius#include <dev/le/lancevar.h> 54166144Smarius#include <dev/le/am7990reg.h> 55166144Smarius#include <dev/le/am7990var.h> 56166144Smarius 57166144Smarius/* 58166144Smarius * LANCE registers 59166144Smarius */ 60166144Smarius#define LEREG1_RDP 0 /* Register Data port */ 61166144Smarius#define LEREG1_RAP 2 /* Register Address port */ 62166144Smarius 63166144Smariusstruct le_lebuffer_softc { 64166144Smarius struct am7990_softc sc_am7990; /* glue to MI code */ 65166144Smarius 66166144Smarius struct resource *sc_bres; 67166144Smarius 68166144Smarius struct resource *sc_rres; 69166144Smarius 70166144Smarius struct resource *sc_ires; 71166144Smarius void *sc_ih; 72166144Smarius}; 73166144Smarius 74166144Smariusstatic devclass_t le_lebuffer_devclass; 75166144Smarius 76166144Smariusstatic device_probe_t le_lebuffer_probe; 77166144Smariusstatic device_attach_t le_lebuffer_attach; 78166144Smariusstatic device_detach_t le_lebuffer_detach; 79166144Smariusstatic device_resume_t le_buffer_resume; 80166144Smariusstatic device_suspend_t le_buffer_suspend; 81166144Smarius 82166144Smariusstatic device_method_t le_lebuffer_methods[] = { 83166144Smarius /* Device interface */ 84166144Smarius DEVMETHOD(device_probe, le_lebuffer_probe), 85166144Smarius DEVMETHOD(device_attach, le_lebuffer_attach), 86166144Smarius DEVMETHOD(device_detach, le_lebuffer_detach), 87166144Smarius /* We can just use the suspend method here. */ 88166144Smarius DEVMETHOD(device_shutdown, le_buffer_suspend), 89166144Smarius DEVMETHOD(device_suspend, le_buffer_suspend), 90166144Smarius DEVMETHOD(device_resume, le_buffer_resume), 91166144Smarius 92166144Smarius { 0, 0 } 93166144Smarius}; 94166144Smarius 95166144SmariusDEFINE_CLASS_0(le, le_lebuffer_driver, le_lebuffer_methods, 96166144Smarius sizeof(struct le_lebuffer_softc)); 97166144SmariusDRIVER_MODULE(le, lebuffer, le_lebuffer_driver, le_lebuffer_devclass, 0, 0); 98166144SmariusMODULE_DEPEND(le, ether, 1, 1, 1); 99183337SmariusMODULE_DEPEND(le, lebuffer, 1, 1, 1); 100166144Smarius 101166144Smarius/* 102166144Smarius * Media types supported 103166144Smarius */ 104166144Smariusstatic const int le_lebuffer_media[] = { 105166144Smarius IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0) 106166144Smarius}; 107298431Spfg#define NLEMEDIA nitems(le_lebuffer_media) 108166144Smarius 109166144Smariusstatic void le_lebuffer_wrcsr(struct lance_softc *, uint16_t, uint16_t); 110166144Smariusstatic uint16_t le_lebuffer_rdcsr(struct lance_softc *, uint16_t); 111166144Smariusstatic void le_lebuffer_copytodesc(struct lance_softc *, void *, int, int); 112166144Smariusstatic void le_lebuffer_copyfromdesc(struct lance_softc *, void *, int, int); 113166144Smariusstatic void le_lebuffer_copytobuf(struct lance_softc *, void *, int, int); 114166144Smariusstatic void le_lebuffer_copyfrombuf(struct lance_softc *, void *, int, int); 115166144Smariusstatic void le_lebuffer_zerobuf(struct lance_softc *, int, int); 116166144Smarius 117166144Smariusstatic void 118166144Smariusle_lebuffer_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 119166144Smarius{ 120166144Smarius struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; 121166144Smarius 122183337Smarius bus_write_2(lesc->sc_rres, LEREG1_RAP, port); 123183337Smarius bus_barrier(lesc->sc_rres, LEREG1_RAP, 2, BUS_SPACE_BARRIER_WRITE); 124183337Smarius bus_write_2(lesc->sc_rres, LEREG1_RDP, val); 125166144Smarius} 126166144Smarius 127166144Smariusstatic uint16_t 128166144Smariusle_lebuffer_rdcsr(struct lance_softc *sc, uint16_t port) 129166144Smarius{ 130166144Smarius struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; 131166144Smarius 132183337Smarius bus_write_2(lesc->sc_rres, LEREG1_RAP, port); 133183337Smarius bus_barrier(lesc->sc_rres, LEREG1_RAP, 2, BUS_SPACE_BARRIER_WRITE); 134183337Smarius return (bus_read_2(lesc->sc_rres, LEREG1_RDP)); 135166144Smarius} 136166144Smarius 137166144Smarius/* 138166144Smarius * It turns out that using bus_space(9) to access the buffers and the 139166144Smarius * descriptors yields way more throughput than accessing them via the 140166144Smarius * KVA returned by rman_get_virtual(9). The descriptor rings can be 141166144Smarius * accessed using 8-bit up to 64-bit operations while the buffers can 142166144Smarius * be only accessed using 8-bit and 16-bit operations. 143166144Smarius * NB: For whatever reason setting LE_C3_BSWP has no effect with at 144166144Smarius * least the 501-2981 (although their 'busmaster-regval' property 145166144Smarius * indicates to set LE_C3_BSWP also for these cards), so we need 146166144Smarius * to manually byte swap access to the buffers, i.e. the accesses 147166144Smarius * going through the RX/TX FIFOs. 148166144Smarius */ 149166144Smarius 150166144Smariusstatic void 151166144Smariusle_lebuffer_copytodesc(struct lance_softc *sc, void *fromv, int off, int len) 152166144Smarius{ 153166144Smarius struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; 154166144Smarius caddr_t from = fromv; 155166144Smarius 156166144Smarius for (; len >= 8; len -= 8, off += 8, from += 8) 157183337Smarius bus_write_8(lesc->sc_bres, off, be64dec(from)); 158166144Smarius for (; len >= 4; len -= 4, off += 4, from += 4) 159183337Smarius bus_write_4(lesc->sc_bres, off, be32dec(from)); 160166144Smarius for (; len >= 2; len -= 2, off += 2, from += 2) 161183337Smarius bus_write_2(lesc->sc_bres, off, be16dec(from)); 162166144Smarius if (len == 1) 163183337Smarius bus_write_1(lesc->sc_bres, off, *from); 164166144Smarius} 165166144Smarius 166166144Smariusstatic void 167166144Smariusle_lebuffer_copyfromdesc(struct lance_softc *sc, void *tov, int off, int len) 168166144Smarius{ 169166144Smarius struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; 170166144Smarius caddr_t to = tov; 171166144Smarius 172166144Smarius for (; len >= 8; len -= 8, off += 8, to += 8) 173166144Smarius be64enc(to, 174183337Smarius bus_read_8(lesc->sc_bres, off)); 175166144Smarius for (; len >= 4; len -= 4, off += 4, to += 4) 176166144Smarius be32enc(to, 177183337Smarius bus_read_4(lesc->sc_bres, off)); 178166144Smarius for (; len >= 2; len -= 2, off += 2, to += 2) 179166144Smarius be16enc(to, 180183337Smarius bus_read_2(lesc->sc_bres, off)); 181166144Smarius if (len == 1) 182183337Smarius *to = bus_read_1(lesc->sc_bres, off); 183166144Smarius} 184166144Smarius 185166144Smariusstatic void 186166144Smariusle_lebuffer_copytobuf(struct lance_softc *sc, void *fromv, int off, int len) 187166144Smarius{ 188166144Smarius struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; 189166144Smarius caddr_t from = fromv; 190166144Smarius 191166144Smarius for (; len >= 2; len -= 2, off += 2, from += 2) 192183337Smarius bus_write_2(lesc->sc_bres, off, le16dec(from)); 193166144Smarius if (len == 1) 194183337Smarius bus_write_1(lesc->sc_bres, off + 1, *from); 195166144Smarius} 196166144Smarius 197166144Smariusstatic void 198166144Smariusle_lebuffer_copyfrombuf(struct lance_softc *sc, void *tov, int off, int len) 199166144Smarius{ 200166144Smarius struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; 201166144Smarius caddr_t to = tov; 202166144Smarius 203166144Smarius for (; len >= 2; len -= 2, off += 2, to += 2) 204166144Smarius le16enc(to, 205183337Smarius bus_read_2(lesc->sc_bres, off)); 206166144Smarius if (len == 1) 207183337Smarius *to = bus_read_1(lesc->sc_bres, off + 1); 208166144Smarius} 209166144Smarius 210166144Smariusstatic void 211166144Smariusle_lebuffer_zerobuf(struct lance_softc *sc, int off, int len) 212166144Smarius{ 213166144Smarius struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; 214166144Smarius 215166144Smarius for (; len >= 2; len -= 2, off += 2) 216183337Smarius bus_write_2(lesc->sc_bres, off, 0); 217166144Smarius if (len == 1) 218183337Smarius bus_write_1(lesc->sc_bres, off + 1, 0); 219166144Smarius} 220166144Smarius 221166144Smariusstatic int 222166144Smariusle_lebuffer_probe(device_t dev) 223166144Smarius{ 224166144Smarius 225166144Smarius if (strcmp(ofw_bus_get_name(dev), "le") == 0) { 226166144Smarius device_set_desc(dev, "LANCE Ethernet"); 227166144Smarius return (BUS_PROBE_DEFAULT); 228166144Smarius } 229166144Smarius return (ENXIO); 230166144Smarius} 231166144Smarius 232166144Smariusstatic int 233166144Smariusle_lebuffer_attach(device_t dev) 234166144Smarius{ 235166144Smarius struct le_lebuffer_softc *lesc; 236166144Smarius struct lance_softc *sc; 237183337Smarius int error, i; 238166144Smarius 239166144Smarius lesc = device_get_softc(dev); 240166144Smarius sc = &lesc->sc_am7990.lsc; 241166144Smarius 242166144Smarius LE_LOCK_INIT(sc, device_get_nameunit(dev)); 243166144Smarius 244166144Smarius /* 245166144Smarius * The "register space" of the parent is just a buffer where the 246166144Smarius * the LANCE descriptor rings and the RX/TX buffers can be stored. 247166144Smarius */ 248183337Smarius i = 0; 249166144Smarius lesc->sc_bres = bus_alloc_resource_any(device_get_parent(dev), 250183337Smarius SYS_RES_MEMORY, &i, RF_ACTIVE); 251166144Smarius if (lesc->sc_bres == NULL) { 252166144Smarius device_printf(dev, "cannot allocate LANCE buffer\n"); 253166144Smarius error = ENXIO; 254166144Smarius goto fail_mtx; 255166144Smarius } 256166144Smarius 257166144Smarius /* Allocate LANCE registers. */ 258183337Smarius i = 0; 259166144Smarius lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 260183337Smarius &i, RF_ACTIVE); 261166144Smarius if (lesc->sc_rres == NULL) { 262166144Smarius device_printf(dev, "cannot allocate LANCE registers\n"); 263166144Smarius error = ENXIO; 264166144Smarius goto fail_bres; 265166144Smarius } 266166144Smarius 267166144Smarius /* Allocate LANCE interrupt. */ 268183337Smarius i = 0; 269166144Smarius if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, 270183337Smarius &i, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 271166144Smarius device_printf(dev, "cannot allocate interrupt\n"); 272166144Smarius error = ENXIO; 273166144Smarius goto fail_rres; 274166144Smarius } 275166144Smarius 276166144Smarius /* 277166144Smarius * LANCE view is offset by buffer location. 278166144Smarius * Note that we don't use sc->sc_mem. 279166144Smarius */ 280166144Smarius sc->sc_addr = 0; 281166144Smarius sc->sc_memsize = rman_get_size(lesc->sc_bres); 282166144Smarius sc->sc_flags = 0; 283166144Smarius 284166144Smarius /* That old black magic... */ 285166144Smarius if (OF_getprop(ofw_bus_get_node(dev), "busmaster-regval", 286166144Smarius &sc->sc_conf3, sizeof(sc->sc_conf3)) == -1) 287166144Smarius sc->sc_conf3 = LE_C3_ACON | LE_C3_BCON; 288166144Smarius /* 289166144Smarius * Make sure LE_C3_BSWP is cleared so that for cards where 290166144Smarius * that flag actually works le_lebuffer_copy{from,to}buf() 291166144Smarius * don't fail... 292166144Smarius */ 293166144Smarius sc->sc_conf3 &= ~LE_C3_BSWP; 294166144Smarius 295166144Smarius OF_getetheraddr(dev, sc->sc_enaddr); 296166144Smarius 297166144Smarius sc->sc_copytodesc = le_lebuffer_copytodesc; 298166144Smarius sc->sc_copyfromdesc = le_lebuffer_copyfromdesc; 299166144Smarius sc->sc_copytobuf = le_lebuffer_copytobuf; 300166144Smarius sc->sc_copyfrombuf = le_lebuffer_copyfrombuf; 301166144Smarius sc->sc_zerobuf = le_lebuffer_zerobuf; 302166144Smarius 303166144Smarius sc->sc_rdcsr = le_lebuffer_rdcsr; 304166144Smarius sc->sc_wrcsr = le_lebuffer_wrcsr; 305166144Smarius sc->sc_hwreset = NULL; 306166144Smarius sc->sc_hwinit = NULL; 307166144Smarius sc->sc_hwintr = NULL; 308166144Smarius sc->sc_nocarrier = NULL; 309166144Smarius sc->sc_mediachange = NULL; 310166144Smarius sc->sc_mediastatus = NULL; 311166144Smarius sc->sc_supmedia = le_lebuffer_media; 312166144Smarius sc->sc_nsupmedia = NLEMEDIA; 313166144Smarius sc->sc_defaultmedia = le_lebuffer_media[0]; 314166144Smarius 315166144Smarius error = am7990_config(&lesc->sc_am7990, device_get_name(dev), 316166144Smarius device_get_unit(dev)); 317166144Smarius if (error != 0) { 318166144Smarius device_printf(dev, "cannot attach Am7990\n"); 319166144Smarius goto fail_ires; 320166144Smarius } 321166144Smarius 322166144Smarius error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE, 323166901Spiso NULL, am7990_intr, sc, &lesc->sc_ih); 324166144Smarius if (error != 0) { 325166144Smarius device_printf(dev, "cannot set up interrupt\n"); 326166144Smarius goto fail_am7990; 327166144Smarius } 328166144Smarius 329166144Smarius return (0); 330166144Smarius 331166144Smarius fail_am7990: 332166144Smarius am7990_detach(&lesc->sc_am7990); 333166144Smarius fail_ires: 334183337Smarius bus_release_resource(dev, SYS_RES_IRQ, 335183337Smarius rman_get_rid(lesc->sc_ires), lesc->sc_ires); 336166144Smarius fail_rres: 337183337Smarius bus_release_resource(dev, SYS_RES_MEMORY, 338183337Smarius rman_get_rid(lesc->sc_rres), lesc->sc_rres); 339166144Smarius fail_bres: 340166144Smarius bus_release_resource(device_get_parent(dev), SYS_RES_MEMORY, 341183337Smarius rman_get_rid(lesc->sc_bres), lesc->sc_bres); 342166144Smarius fail_mtx: 343166144Smarius LE_LOCK_DESTROY(sc); 344166144Smarius return (error); 345166144Smarius} 346166144Smarius 347166144Smariusstatic int 348166144Smariusle_lebuffer_detach(device_t dev) 349166144Smarius{ 350166144Smarius struct le_lebuffer_softc *lesc; 351166144Smarius struct lance_softc *sc; 352166144Smarius 353166144Smarius lesc = device_get_softc(dev); 354166144Smarius sc = &lesc->sc_am7990.lsc; 355166144Smarius 356166144Smarius bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih); 357166144Smarius am7990_detach(&lesc->sc_am7990); 358183337Smarius bus_release_resource(dev, SYS_RES_IRQ, 359183337Smarius rman_get_rid(lesc->sc_ires), lesc->sc_ires); 360183337Smarius bus_release_resource(dev, SYS_RES_MEMORY, 361183337Smarius rman_get_rid(lesc->sc_rres), lesc->sc_rres); 362166144Smarius bus_release_resource(device_get_parent(dev), SYS_RES_MEMORY, 363183337Smarius rman_get_rid(lesc->sc_bres), lesc->sc_bres); 364166144Smarius LE_LOCK_DESTROY(sc); 365166144Smarius 366166144Smarius return (0); 367166144Smarius} 368166144Smarius 369166144Smariusstatic int 370166144Smariusle_buffer_suspend(device_t dev) 371166144Smarius{ 372166144Smarius struct le_lebuffer_softc *lesc; 373166144Smarius 374166144Smarius lesc = device_get_softc(dev); 375166144Smarius 376166144Smarius lance_suspend(&lesc->sc_am7990.lsc); 377166144Smarius 378166144Smarius return (0); 379166144Smarius} 380166144Smarius 381166144Smariusstatic int 382166144Smariusle_buffer_resume(device_t dev) 383166144Smarius{ 384166144Smarius struct le_lebuffer_softc *lesc; 385166144Smarius 386166144Smarius lesc = device_get_softc(dev); 387166144Smarius 388166144Smarius lance_resume(&lesc->sc_am7990.lsc); 389166144Smarius 390166144Smarius return (0); 391166144Smarius} 392