Author: andrew Date: Sun Mar 8 13:52:07 2015 New Revision: 279778 URL: https://svnweb.freebsd.org/changeset/base/279778
Log: Add support for enabling the USB on the Raspberry Pi boards when it hasn't been done by U-Boot. This allows the USB to work when we load the kernel directly. No dma sync is performed after these operations as the data we read/write is not used by the cpu after the calls to the maimbox driver. Differential Revision: https://reviews.freebsd.org/D1940 Reviewed by: imp, Michal Meloun (meloun AT miracle.cz) MFC after: 1 Week Sponsored by: ABT Systems Ltd Added: head/sys/arm/broadcom/bcm2835/bcm283x_dwc_fdt.c (contents, props changed) head/sys/dev/usb/controller/dwc_otg_fdt.h (contents, props changed) Modified: head/sys/arm/broadcom/bcm2835/files.bcm2835 head/sys/dev/usb/controller/dwc_otg_fdt.c Added: head/sys/arm/broadcom/bcm2835/bcm283x_dwc_fdt.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/arm/broadcom/bcm2835/bcm283x_dwc_fdt.c Sun Mar 8 13:52:07 2015 (r279778) @@ -0,0 +1,176 @@ +/* + * Copyright 2015 Andrew Turner. + * 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. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/bus.h> +#include <sys/callout.h> +#include <sys/condvar.h> +#include <sys/module.h> + +#include <dev/ofw/ofw_bus_subr.h> + +#include <dev/usb/usb.h> +#include <dev/usb/usbdi.h> + +#include <dev/usb/usb_busdma.h> +#include <dev/usb/usb_process.h> + +#include <dev/usb/usb_controller.h> +#include <dev/usb/usb_bus.h> + +#include <dev/usb/controller/dwc_otg.h> +#include <dev/usb/controller/dwc_otg_fdt.h> + +#include <vm/vm.h> +#include <vm/pmap.h> +#include <machine/pmap.h> + +#include <arm/broadcom/bcm2835/bcm2835_mbox.h> +#include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h> +#include <arm/broadcom/bcm2835/bcm2835_vcbus.h> + +#include "mbox_if.h" + +static device_probe_t bcm283x_dwc_otg_probe; +static device_attach_t bcm283x_dwc_otg_attach; + +static int +bcm283x_dwc_otg_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-usb")) + return (ENXIO); + + device_set_desc(dev, "DWC OTG 2.0 integrated USB controller (bcm283x)"); + + return (BUS_PROBE_VENDOR); +} + +static void +bcm283x_dwc_otg_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err) +{ + bus_addr_t *addr; + + if (err) + return; + addr = (bus_addr_t *)arg; + *addr = PHYS_TO_VCBUS(segs[0].ds_addr); +} + +static int +bcm283x_dwc_otg_attach(device_t dev) +{ + struct msg_set_power_state *msg; + bus_dma_tag_t msg_tag; + bus_dmamap_t msg_map; + bus_addr_t msg_phys; + void *msg_buf; + uint32_t reg; + device_t mbox; + int err; + + /* get mbox device */ + mbox = devclass_get_device(devclass_find("mbox"), 0); + if (mbox == NULL) { + device_printf(dev, "can't find mbox\n"); + return (ENXIO); + } + + err = bus_dma_tag_create(bus_get_dma_tag(dev), 16, 0, + BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, + sizeof(struct msg_set_power_state), 1, + sizeof(struct msg_set_power_state), 0, + NULL, NULL, &msg_tag); + if (err != 0) { + device_printf(dev, "can't create DMA tag\n"); + return (ENXIO); + } + + err = bus_dmamem_alloc(msg_tag, (void **)&msg_buf, 0, &msg_map); + if (err != 0) { + bus_dma_tag_destroy(msg_tag); + device_printf(dev, "can't allocate dmamem\n"); + return (ENXIO); + } + + err = bus_dmamap_load(msg_tag, msg_map, msg_buf, + sizeof(struct msg_set_power_state), bcm283x_dwc_otg_cb, + &msg_phys, 0); + if (err != 0) { + bus_dmamem_free(msg_tag, msg_buf, msg_map); + bus_dma_tag_destroy(msg_tag); + device_printf(dev, "can't load DMA map\n"); + return (ENXIO); + } + + msg = msg_buf; + + memset(msg, 0, sizeof(*msg)); + msg->hdr.buf_size = sizeof(*msg); + msg->hdr.code = BCM2835_MBOX_CODE_REQ; + msg->tag_hdr.tag = BCM2835_MBOX_TAG_SET_POWER_STATE; + msg->tag_hdr.val_buf_size = sizeof(msg->body); + msg->tag_hdr.val_len = sizeof(msg->body.req); + msg->body.req.device_id = BCM2835_MBOX_POWER_ID_USB_HCD; + msg->body.req.state = BCM2835_MBOX_POWER_ON | BCM2835_MBOX_POWER_WAIT; + msg->end_tag = 0; + + bus_dmamap_sync(msg_tag, msg_map, + BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); + + MBOX_WRITE(mbox, BCM2835_MBOX_CHAN_PROP, (uint32_t)msg_phys); + MBOX_READ(mbox, BCM2835_MBOX_CHAN_PROP, ®); + + bus_dmamap_unload(msg_tag, msg_map); + bus_dmamem_free(msg_tag, msg_buf, msg_map); + bus_dma_tag_destroy(msg_tag); + + return (dwc_otg_attach(dev)); +} + +static device_method_t bcm283x_dwc_otg_methods[] = { + /* bus interface */ + DEVMETHOD(device_probe, bcm283x_dwc_otg_probe), + DEVMETHOD(device_attach, bcm283x_dwc_otg_attach), + + DEVMETHOD_END +}; + +static devclass_t bcm283x_dwc_otg_devclass; + +DEFINE_CLASS_1(bcm283x_dwcotg, bcm283x_dwc_otg_driver, bcm283x_dwc_otg_methods, + sizeof(struct dwc_otg_fdt_softc), dwc_otg_driver); +DRIVER_MODULE(bcm283x_dwcotg, simplebus, bcm283x_dwc_otg_driver, + bcm283x_dwc_otg_devclass, 0, 0); +MODULE_DEPEND(bcm283x_dwcotg, usb, 1, 1, 1); Modified: head/sys/arm/broadcom/bcm2835/files.bcm2835 ============================================================================== --- head/sys/arm/broadcom/bcm2835/files.bcm2835 Sun Mar 8 11:19:41 2015 (r279777) +++ head/sys/arm/broadcom/bcm2835/files.bcm2835 Sun Mar 8 13:52:07 2015 (r279778) @@ -15,6 +15,8 @@ arm/broadcom/bcm2835/bcm2835_spi.c opti arm/broadcom/bcm2835/bcm2835_systimer.c standard arm/broadcom/bcm2835/bcm2835_wdog.c standard +arm/broadcom/bcm2835/bcm283x_dwc_fdt.c optional dwcotg fdt + arm/arm/bus_space_base.c standard arm/arm/bus_space_generic.c standard arm/arm/bus_space_asm_generic.S standard Modified: head/sys/dev/usb/controller/dwc_otg_fdt.c ============================================================================== --- head/sys/dev/usb/controller/dwc_otg_fdt.c Sun Mar 8 11:19:41 2015 (r279777) +++ head/sys/dev/usb/controller/dwc_otg_fdt.c Sun Mar 8 13:52:07 2015 (r279778) @@ -53,15 +53,11 @@ __FBSDID("$FreeBSD$"); #include <dev/usb/usb_bus.h> #include <dev/usb/controller/dwc_otg.h> +#include <dev/usb/controller/dwc_otg_fdt.h> static device_probe_t dwc_otg_probe; -static device_attach_t dwc_otg_attach; static device_detach_t dwc_otg_detach; -struct dwc_otg_super_softc { - struct dwc_otg_softc sc_otg; /* must be first */ -}; - static int dwc_otg_probe(device_t dev) { @@ -74,13 +70,13 @@ dwc_otg_probe(device_t dev) device_set_desc(dev, "DWC OTG 2.0 integrated USB controller"); - return (0); + return (BUS_PROBE_DEFAULT); } -static int +int dwc_otg_attach(device_t dev) { - struct dwc_otg_super_softc *sc = device_get_softc(dev); + struct dwc_otg_fdt_softc *sc = device_get_softc(dev); char usb_mode[24]; int err; int rid; @@ -161,7 +157,7 @@ error: static int dwc_otg_detach(device_t dev) { - struct dwc_otg_super_softc *sc = device_get_softc(dev); + struct dwc_otg_fdt_softc *sc = device_get_softc(dev); device_t bdev; int err; @@ -212,10 +208,10 @@ static device_method_t dwc_otg_methods[] DEVMETHOD_END }; -static driver_t dwc_otg_driver = { +driver_t dwc_otg_driver = { .name = "dwcotg", .methods = dwc_otg_methods, - .size = sizeof(struct dwc_otg_super_softc), + .size = sizeof(struct dwc_otg_fdt_softc), }; static devclass_t dwc_otg_devclass; Added: head/sys/dev/usb/controller/dwc_otg_fdt.h ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/usb/controller/dwc_otg_fdt.h Sun Mar 8 13:52:07 2015 (r279778) @@ -0,0 +1,39 @@ +/*- + * Copyright (c) 2012 Hans Petter Selasky. 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. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _DWC_OTG_FDT_H_ +#define _DWC_OTG_FDT_H_ + +struct dwc_otg_fdt_softc { + struct dwc_otg_softc sc_otg; /* must be first */ +}; + +extern driver_t dwc_otg_driver; + +device_attach_t dwc_otg_attach; + +#endif _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
