/* $Id: obio_ohci.c,v 1.3 2008/10/24 05:39:00 matt Exp $ */ /* adapted from: */ /* $NetBSD: obio_ohci.c,v 1.3 2008/10/24 05:39:00 matt Exp $ */ /* $OpenBSD: pxa2x0_ohci.c,v 1.19 2005/04/08 02:32:54 dlg Exp $ */ /* * Copyright (c) 2005 David Gwynne <dlg@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "opt_omap.h" #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: obio_ohci.c,v 1.3 2008/10/24 05:39:00 matt Exp $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/device.h> #include <sys/kernel.h> #include <machine/intr.h> #include <machine/bus.h> #include <dev/usb/usb.h> #include <dev/usb/usbdi.h> #include <dev/usb/usbdivar.h> #include <dev/usb/usb_mem.h> #include <dev/usb/ohcireg.h> #include <dev/usb/ohcivar.h> #include <arm/omap/omap2_obiovar.h> #include <arm/omap/omap2_obioreg.h> struct obioohci_softc { ohci_softc_t sc; void *sc_ih; bus_addr_t sc_addr; bus_addr_t sc_size; }; static int obioohci_match(struct device *, struct cfdata *, void *); static void obioohci_attach(struct device *, struct device *, void *); static int obioohci_detach(struct device *, int); void * obioohci_fake_intr_establish(int (*)(void *), void *); void obioohci_fake_intr(void); CFATTACH_DECL(obioohci, sizeof(struct obioohci_softc), obioohci_match, obioohci_attach, obioohci_detach, ohci_activate); static void obioohci_clkinit(struct obio_attach_args *); static void obioohci_power(int, void *); static void obioohci_enable(struct obioohci_softc *); static void obioohci_disable(struct obioohci_softc *); #define HREAD4(sc,r) bus_space_read_4((sc)->sc.iot, (sc)->sc.ioh, (r)) #define HWRITE4(sc,r,v) bus_space_write_4((sc)->sc.iot, (sc)->sc.ioh, (r), (v)) static int obioohci_match(struct device *parent, struct cfdata *cf, void *aux) { struct obio_attach_args *obio = aux; if ((obio->obio_addr == -1) || (obio->obio_size == 0) || (obio->obio_intr == -1)) panic("obioohci must have addr, size and intr" " specified in config."); obioohci_clkinit(obio); return 1; /* XXX */ } static void obioohci_attach(struct device *parent, struct device *self, void *aux) { struct obioohci_softc *sc = (struct obioohci_softc *)self; struct obio_attach_args *obio = aux; usbd_status r; sc->sc.sc_size = 0; sc->sc_ih = NULL; sc->sc.sc_bus.dmatag = 0; /* Map I/O space */ if (bus_space_map(obio->obio_iot, obio->obio_addr, obio->obio_size, 0, &sc->sc.ioh)) { aprint_error(": couldn't map memory space\n"); return; } sc->sc.iot = obio->obio_iot; sc->sc_addr = obio->obio_addr; sc->sc.sc_size = obio->obio_size; sc->sc.sc_bus.dmatag = obio->obio_dmac; /* XXX copied from ohci_pci.c. needed? */ bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size, BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); /* start the usb clock */ #ifdef NOTYET pxa2x0_clkman_config(CKEN_USBHC, 1); #endif obioohci_enable(sc); /* Disable interrupts, so we don't get any spurious ones. */ bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, OHCI_MIE); #ifdef NOTYET sc->sc_ih = obio_intr_establish(obio->obio_intr, IPL_USB, sc->sc.sc_bus.bdev.dv_xname, ohci_intr, &sc->sc); if (sc->sc_ih == NULL) { aprint_error(": unable to establish interrupt\n"); goto free_map; } #else sc->sc_ih = obioohci_fake_intr_establish(ohci_intr, &sc->sc); #endif strlcpy(sc->sc.sc_vendor, "OMAP2", sizeof(sc->sc.sc_vendor)); r = ohci_init(&sc->sc); if (r != USBD_NORMAL_COMPLETION) { aprint_error("%s: init failed, error=%d\n", sc->sc.sc_bus.bdev.dv_xname, r); goto free_intr; } sc->sc.sc_powerhook = powerhook_establish(sc->sc.sc_bus.bdev.dv_xname, obioohci_power, sc); if (sc->sc.sc_powerhook == NULL) { aprint_error("%s: cannot establish powerhook\n", sc->sc.sc_bus.bdev.dv_xname); } sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, usbctlprint); return; free_intr: #ifdef NOTYET obio_gpio_intr_disestablish(sc->sc_ih); #endif sc->sc_ih = NULL; #ifdef NOTYET free_map: #endif obioohci_disable(sc); #ifdef NOTYET pxa2x0_clkman_config(CKEN_USBHC, 0); #endif bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); sc->sc.sc_size = 0; } static int obioohci_detach(struct device *self, int flags) { struct obioohci_softc *sc = (struct obioohci_softc *)self; int error; error = ohci_detach(&sc->sc, flags); if (error) return error; if (sc->sc.sc_powerhook) { powerhook_disestablish(sc->sc.sc_powerhook); sc->sc.sc_powerhook = NULL; } if (sc->sc_ih) { #ifdef NOTYET obio_gpio_intr_disestablish(sc->sc_ih); #endif sc->sc_ih = NULL; } obioohci_disable(sc); #ifdef NOTYET /* stop clock */ #ifdef DEBUG pxa2x0_clkman_config(CKEN_USBHC, 0); #endif #endif if (sc->sc.sc_size) { bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); sc->sc.sc_size = 0; } return 0; } static void obioohci_power(int why, void *arg) { struct obioohci_softc *sc = (struct obioohci_softc *)arg; int s; s = splhardusb(); sc->sc.sc_bus.use_polling++; switch (why) { case PWR_STANDBY: case PWR_SUSPEND: #if 0 ohci_power(why, &sc->sc); #endif #ifdef NOTYET pxa2x0_clkman_config(CKEN_USBHC, 0); #endif break; case PWR_RESUME: #ifdef NOTYET pxa2x0_clkman_config(CKEN_USBHC, 1); #endif obioohci_enable(sc); #if 0 ohci_power(why, &sc->sc); #endif break; } sc->sc.sc_bus.use_polling--; splx(s); } static void obioohci_enable(struct obioohci_softc *sc) { printf("%s: TBD\n", __func__); } static void obioohci_disable(struct obioohci_softc *sc) { #ifdef NOTYET uint32_t hr; /* Full host reset */ hr = HREAD4(sc, USBHC_HR); HWRITE4(sc, USBHC_HR, (hr & USBHC_HR_MASK) | USBHC_HR_FHR); DELAY(USBHC_RST_WAIT); hr = HREAD4(sc, USBHC_HR); HWRITE4(sc, USBHC_HR, (hr & USBHC_HR_MASK) & ~(USBHC_HR_FHR)); #endif } static void obioohci_clkinit(struct obio_attach_args *obio) { bus_space_handle_t ioh; uint32_t r; int err; err = bus_space_map(obio->obio_iot, OMAP2430_CM_BASE, OMAP2430_CM_SIZE, 0, &ioh); if (err != 0) panic("%s: cannot map OMAP2430_CM_BASE at %#x, error %d\n", __func__, OMAP2430_CM_BASE, err); r = bus_space_read_4(obio->obio_iot, ioh, OMAP2430_CM_FCLKEN2_CORE); r |= OMAP2430_CM_FCLKEN2_CORE_EN_USB; bus_space_write_4(obio->obio_iot, ioh, OMAP2430_CM_FCLKEN2_CORE, r); r = bus_space_read_4(obio->obio_iot, ioh, OMAP2430_CM_ICLKEN2_CORE); r |= OMAP2430_CM_ICLKEN2_CORE_EN_USB; r &= ~OMAP2430_CM_ICLKEN2_CORE_EN_USBHS; /* force FS for ohci */ bus_space_write_4(obio->obio_iot, ioh, OMAP2430_CM_ICLKEN2_CORE, r); bus_space_unmap(obio->obio_iot, ioh, OMAP2430_CM_SIZE); } #if 0 int (*obioohci_fake_intr_func)(void *); void *obioohci_fake_intr_arg; void * obioohci_fake_intr_establish(int (*func)(void *), void *arg) { obioohci_fake_intr_func = func; obioohci_fake_intr_arg = arg; return (void *)1; } void obioohci_fake_intr(void) { (void)(*obioohci_fake_intr_func)(obioohci_fake_intr_arg); } #endif