/*- * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting * Copyright (c) 2010-2011 Adrian Chadd, Xenion Pty Ltd * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any * redistribution must be conditioned upon including a substantially * similar Disclaimer requirement for further binary redistribution. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGES. */ #include __FBSDID("$FreeBSD$"); /* * AHB bus front-end for the Atheros Wireless LAN controller driver. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * bus glue. */ /* number of 16 bit words */ #define ATH_EEPROM_DATA_SIZE 2048 struct ath_ahb_softc { struct ath_softc sc_sc; struct resource *sc_sr; /* memory resource */ struct resource *sc_irq; /* irq resource */ struct resource *sc_eeprom; /* eeprom location */ void *sc_ih; /* interrupt handler */ }; #define VENDOR_ATHEROS 0x168c #define AR9130_DEVID 0x000b static int ath_ahb_probe(device_t dev) { const char* devname; /* Atheros / ar9130 */ devname = ath_hal_probe(VENDOR_ATHEROS, AR9130_DEVID); if (devname != NULL) { device_set_desc(dev, devname); return BUS_PROBE_DEFAULT; } return ENXIO; } static int ath_ahb_attach(device_t dev) { struct ath_ahb_softc *psc = device_get_softc(dev); struct ath_softc *sc = &psc->sc_sc; int error = ENXIO; int rid; long eepromaddr; uint8_t *p; sc->sc_dev = dev; rid = 0; psc->sc_sr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (psc->sc_sr == NULL) { device_printf(dev, "cannot map register space\n"); goto bad; } if (resource_long_value(device_get_name(dev), device_get_unit(dev), "eepromaddr", &eepromaddr) != 0) { device_printf(dev, "cannot fetch 'eepromaddr' from hints\n"); goto bad0; } rid = 0; device_printf(sc->sc_dev, "eeprom @ %p\n", (void *) eepromaddr); psc->sc_eeprom = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, (uintptr_t) eepromaddr, (uintptr_t) eepromaddr + (uintptr_t) ((ATH_EEPROM_DATA_SIZE * 2) - 1), 0, RF_ACTIVE); if (psc->sc_eeprom == NULL) { device_printf(dev, "cannot map eeprom space\n"); goto bad0; } /* XXX uintptr_t is a bandaid for ia64; to be fixed */ sc->sc_st = (HAL_BUS_TAG)(uintptr_t) rman_get_bustag(psc->sc_sr); sc->sc_sh = (HAL_BUS_HANDLE) rman_get_bushandle(psc->sc_sr); /* * Mark device invalid so any interrupts (shared or otherwise) * that arrive before the HAL is setup are discarded. */ sc->sc_invalid = 1; /* Copy the EEPROM data out */ sc->sc_eepromdata = malloc(ATH_EEPROM_DATA_SIZE * 2, M_TEMP, M_NOWAIT | M_ZERO); if (sc->sc_eepromdata == NULL) { device_printf(dev, "cannot allocate memory for eeprom data\n"); goto bad1; } device_printf(sc->sc_dev, "eeprom data @ %p\n", (void *) rman_get_bushandle(psc->sc_eeprom)); /* XXX why doesn't this work? -adrian */ #if 0 bus_space_read_multi_1( rman_get_bustag(psc->sc_eeprom), rman_get_bushandle(psc->sc_eeprom), 0, (u_int8_t *) sc->sc_eepromdata, ATH_EEPROM_DATA_SIZE * 2); #endif p = (void *) rman_get_bushandle(psc->sc_eeprom); memcpy(sc->sc_eepromdata, p, ATH_EEPROM_DATA_SIZE * 2); /* * Arrange interrupt line. */ rid = 0; psc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_SHAREABLE|RF_ACTIVE); if (psc->sc_irq == NULL) { device_printf(dev, "could not map interrupt\n"); goto bad1; } if (bus_setup_intr(dev, psc->sc_irq, INTR_TYPE_NET | INTR_MPSAFE, NULL, ath_intr, sc, &psc->sc_ih)) { device_printf(dev, "could not establish interrupt\n"); goto bad2; } /* * Setup DMA descriptor area. */ if (bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */ 1, 0, /* alignment, bounds */ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ 0x3ffff, /* maxsize XXX */ ATH_MAX_SCATTER, /* nsegments */ 0x3ffff, /* maxsegsize XXX */ BUS_DMA_ALLOCNOW, /* flags */ NULL, /* lockfunc */ NULL, /* lockarg */ &sc->sc_dmat)) { device_printf(dev, "cannot allocate DMA tag\n"); goto bad3; } ATH_LOCK_INIT(sc); error = ath_attach(AR9130_DEVID, sc); if (error == 0) /* success */ return 0; ATH_LOCK_DESTROY(sc); bus_dma_tag_destroy(sc->sc_dmat); bad3: bus_teardown_intr(dev, psc->sc_irq, psc->sc_ih); bad2: bus_release_resource(dev, SYS_RES_IRQ, 0, psc->sc_irq); bad1: bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_eeprom); bad0: bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_sr); bad: /* XXX?! */ if (sc->sc_eepromdata) free(sc->sc_eepromdata, M_TEMP); return (error); } static int ath_ahb_detach(device_t dev) { struct ath_ahb_softc *psc = device_get_softc(dev); struct ath_softc *sc = &psc->sc_sc; /* check if device was removed */ sc->sc_invalid = !bus_child_present(dev); ath_detach(sc); bus_generic_detach(dev); bus_teardown_intr(dev, psc->sc_irq, psc->sc_ih); bus_release_resource(dev, SYS_RES_IRQ, 0, psc->sc_irq); bus_dma_tag_destroy(sc->sc_dmat); bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_sr); bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_eeprom); /* XXX?! */ if (sc->sc_eepromdata) free(sc->sc_eepromdata, M_TEMP); ATH_LOCK_DESTROY(sc); return (0); } static int ath_ahb_shutdown(device_t dev) { struct ath_ahb_softc *psc = device_get_softc(dev); ath_shutdown(&psc->sc_sc); return (0); } static int ath_ahb_suspend(device_t dev) { struct ath_ahb_softc *psc = device_get_softc(dev); ath_suspend(&psc->sc_sc); return (0); } static int ath_ahb_resume(device_t dev) { struct ath_ahb_softc *psc = device_get_softc(dev); ath_resume(&psc->sc_sc); return (0); } static device_method_t ath_ahb_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ath_ahb_probe), DEVMETHOD(device_attach, ath_ahb_attach), DEVMETHOD(device_detach, ath_ahb_detach), DEVMETHOD(device_shutdown, ath_ahb_shutdown), DEVMETHOD(device_suspend, ath_ahb_suspend), DEVMETHOD(device_resume, ath_ahb_resume), { 0,0 } }; static driver_t ath_ahb_driver = { "ath", ath_ahb_methods, sizeof (struct ath_ahb_softc) }; static devclass_t ath_devclass; DRIVER_MODULE(ath, nexus, ath_ahb_driver, ath_devclass, 0, 0); MODULE_VERSION(ath, 1); MODULE_DEPEND(ath, wlan, 1, 1, 1); /* 802.11 media layer */ MODULE_DEPEND(ath, if_ath, 1, 1, 1); /* if_ath driver */