Add driver for "generic-ohci" as defined by FDT.
If platform support EXT_RESOURCES, clocks and resets are handled out of the box. If not driver can be subclassed using the generic_usb interface. generic_usb name was choosed because at one point I'll add generic-ehci FDT driver. Reviewed by: jmcneill, hselasky Approved by: andrew (mentor) Differential Revision: https://reviews.freebsd.org/D5481
This commit is contained in:
parent
50f0439087
commit
d71896a76a
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=300068
@ -24,6 +24,8 @@ arm/allwinner/if_awg.c optional awg
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arm/allwinner/if_emac.c optional emac
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arm/allwinner/sunxi_dma_if.m standard
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dev/iicbus/twsi/a10_twsi.c optional twsi
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dev/usb/controller/generic_ohci.c optional ohci
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dev/usb/controller/generic_usb_if.m optional ohci
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arm/allwinner/aw_sid.c standard
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arm/allwinner/aw_thermal.c standard
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#arm/allwinner/console.c standard
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@ -98,7 +98,7 @@ options USB_DEBUG
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#options USB_REQ_DEBUG
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#options USB_VERBOSE
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#device uhci
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#device ohci
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device ohci
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device ehci
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device umass
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@ -113,7 +113,7 @@ options USB_DEBUG
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#options USB_REQ_DEBUG
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#options USB_VERBOSE
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#device uhci
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#device ohci
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device ohci
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device ehci
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device umass
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308
sys/dev/usb/controller/generic_ohci.c
Normal file
308
sys/dev/usb/controller/generic_ohci.c
Normal file
@ -0,0 +1,308 @@
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/*-
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* Copyright (c) 2006 M. Warner Losh. All rights reserved.
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* Copyright (c) 2016 Emmanuel Vadot <manu@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Generic OHCI driver based on AT91 OHCI
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/condvar.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <machine/bus.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usb_core.h>
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#include <dev/usb/usb_busdma.h>
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#include <dev/usb/usb_process.h>
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#include <dev/usb/usb_util.h>
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#include <dev/usb/usb_controller.h>
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#include <dev/usb/usb_bus.h>
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#include <dev/usb/controller/ohci.h>
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#include <dev/usb/controller/ohcireg.h>
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#ifdef EXT_RESOURCES
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#include <dev/extres/clk/clk.h>
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#include <dev/extres/hwreset/hwreset.h>
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#endif
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#include "generic_usb_if.h"
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#ifdef EXT_RESOURCES
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struct clk_list {
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TAILQ_ENTRY(clk_list) next;
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clk_t clk;
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};
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#endif
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struct generic_ohci_softc {
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ohci_softc_t ohci_sc;
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#ifdef EXT_RESOURCES
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hwreset_t rst;
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TAILQ_HEAD(, clk_list) clk_list;
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#endif
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};
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static int generic_ohci_detach(device_t);
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static int
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generic_ohci_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_is_compatible(dev, "generic-ohci"))
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return (ENXIO);
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device_set_desc(dev, "Generic OHCI Controller");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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generic_ohci_attach(device_t dev)
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{
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struct generic_ohci_softc *sc = device_get_softc(dev);
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int err, rid;
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#ifdef EXT_RESOURCES
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int off;
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struct clk_list *clkp;
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clk_t clk;
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#endif
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sc->ohci_sc.sc_bus.parent = dev;
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sc->ohci_sc.sc_bus.devices = sc->ohci_sc.sc_devices;
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sc->ohci_sc.sc_bus.devices_max = OHCI_MAX_DEVICES;
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sc->ohci_sc.sc_bus.dma_bits = 32;
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/* get all DMA memory */
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if (usb_bus_mem_alloc_all(&sc->ohci_sc.sc_bus,
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USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) {
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return (ENOMEM);
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}
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rid = 0;
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sc->ohci_sc.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&rid, RF_ACTIVE);
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if (sc->ohci_sc.sc_io_res == 0) {
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err = ENOMEM;
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goto error;
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}
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sc->ohci_sc.sc_io_tag = rman_get_bustag(sc->ohci_sc.sc_io_res);
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sc->ohci_sc.sc_io_hdl = rman_get_bushandle(sc->ohci_sc.sc_io_res);
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sc->ohci_sc.sc_io_size = rman_get_size(sc->ohci_sc.sc_io_res);
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rid = 0;
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sc->ohci_sc.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
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RF_ACTIVE);
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if (sc->ohci_sc.sc_irq_res == 0) {
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err = ENXIO;
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goto error;
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}
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sc->ohci_sc.sc_bus.bdev = device_add_child(dev, "usbus", -1);
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if (sc->ohci_sc.sc_bus.bdev == 0) {
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err = ENXIO;
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goto error;
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}
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device_set_ivars(sc->ohci_sc.sc_bus.bdev, &sc->ohci_sc.sc_bus);
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strlcpy(sc->ohci_sc.sc_vendor, "Generic",
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sizeof(sc->ohci_sc.sc_vendor));
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err = bus_setup_intr(dev, sc->ohci_sc.sc_irq_res,
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INTR_TYPE_BIO | INTR_MPSAFE, NULL,
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(driver_intr_t *)ohci_interrupt, sc, &sc->ohci_sc.sc_intr_hdl);
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if (err) {
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sc->ohci_sc.sc_intr_hdl = NULL;
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goto error;
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}
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#ifdef EXT_RESOURCES
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TAILQ_INIT(&sc->clk_list);
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/* Enable clock */
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for (off = 0; clk_get_by_ofw_index(dev, off, &clk) == 0; off++) {
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err = clk_enable(clk);
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if (err != 0) {
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device_printf(dev, "Could not enable clock %s\n",
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clk_get_name(clk));
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goto error;
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}
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clkp = malloc(sizeof(clkp), M_DEVBUF, M_WAITOK | M_ZERO);
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clkp->clk = clk;
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TAILQ_INSERT_TAIL(&sc->clk_list, clkp, next);
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}
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/* De-assert reset */
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if (hwreset_get_by_ofw_idx(dev, 0, &sc->rst) == 0) {
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err = hwreset_deassert(sc->rst);
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if (err != 0) {
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device_printf(dev, "Could not de-assert reset %d\n",
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off);
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goto error;
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}
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}
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#endif
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if (GENERIC_USB_INIT(dev) != 0) {
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err = ENXIO;
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goto error;
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}
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err = ohci_init(&sc->ohci_sc);
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if (err == 0)
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err = device_probe_and_attach(sc->ohci_sc.sc_bus.bdev);
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if (err)
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goto error;
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return (0);
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error:
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generic_ohci_detach(dev);
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return (err);
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}
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static int
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generic_ohci_detach(device_t dev)
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{
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struct generic_ohci_softc *sc = device_get_softc(dev);
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device_t bdev;
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int err;
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#ifdef EXT_RESOURCES
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struct clk_list *clk, *clk_tmp;
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#endif
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if (sc->ohci_sc.sc_bus.bdev) {
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bdev = sc->ohci_sc.sc_bus.bdev;
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device_detach(bdev);
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device_delete_child(dev, bdev);
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}
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/* during module unload there are lots of children leftover */
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device_delete_children(dev);
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/*
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* Put the controller into reset, then disable clocks and do
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* the MI tear down. We have to disable the clocks/hardware
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* after we do the rest of the teardown. We also disable the
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* clocks in the opposite order we acquire them, but that
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* doesn't seem to be absolutely necessary. We free up the
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* clocks after we disable them, so the system could, in
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* theory, reuse them.
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*/
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bus_space_write_4(sc->ohci_sc.sc_io_tag, sc->ohci_sc.sc_io_hdl,
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OHCI_CONTROL, 0);
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if (sc->ohci_sc.sc_irq_res && sc->ohci_sc.sc_intr_hdl) {
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/*
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* only call ohci_detach() after ohci_init()
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*/
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ohci_detach(&sc->ohci_sc);
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err = bus_teardown_intr(dev, sc->ohci_sc.sc_irq_res,
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sc->ohci_sc.sc_intr_hdl);
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sc->ohci_sc.sc_intr_hdl = NULL;
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}
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if (sc->ohci_sc.sc_irq_res) {
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bus_release_resource(dev, SYS_RES_IRQ, 0,
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sc->ohci_sc.sc_irq_res);
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sc->ohci_sc.sc_irq_res = NULL;
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}
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if (sc->ohci_sc.sc_io_res) {
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bus_release_resource(dev, SYS_RES_MEMORY, 0,
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sc->ohci_sc.sc_io_res);
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sc->ohci_sc.sc_io_res = NULL;
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}
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usb_bus_mem_free_all(&sc->ohci_sc.sc_bus, &ohci_iterate_hw_softc);
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#ifdef EXT_RESOURCES
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/* Disable clock */
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TAILQ_FOREACH_SAFE(clk, &sc->clk_list, next, clk_tmp) {
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err = clk_disable(clk->clk);
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if (err != 0)
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device_printf(dev, "Could not disable clock %s\n",
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clk_get_name(clk->clk));
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err = clk_release(clk->clk);
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if (err != 0)
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device_printf(dev, "Could not release clock %s\n",
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clk_get_name(clk->clk));
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TAILQ_REMOVE(&sc->clk_list, clk, next);
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free(clk, M_DEVBUF);
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}
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/* De-assert reset */
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if (sc->rst) {
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err = hwreset_assert(sc->rst);
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if (err != 0)
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device_printf(dev, "Could not assert reset\n");
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hwreset_release(sc->rst);
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}
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#endif
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if (GENERIC_USB_DEINIT(dev) != 0)
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return (ENXIO);
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return (0);
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}
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static device_method_t generic_ohci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, generic_ohci_probe),
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DEVMETHOD(device_attach, generic_ohci_attach),
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DEVMETHOD(device_detach, generic_ohci_detach),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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driver_t generic_ohci_driver = {
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.name = "ohci",
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.methods = generic_ohci_methods,
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.size = sizeof(struct generic_ohci_softc),
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};
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static devclass_t generic_ohci_devclass;
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DRIVER_MODULE(ohci, simplebus, generic_ohci_driver,
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generic_ohci_devclass, 0, 0);
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MODULE_DEPEND(ohci, usb, 1, 1, 1);
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60
sys/dev/usb/controller/generic_usb_if.m
Normal file
60
sys/dev/usb/controller/generic_usb_if.m
Normal file
@ -0,0 +1,60 @@
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#-
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# Copyright (c) 2016 Emmanuel Vadot <manu@freebsd.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
|
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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INTERFACE generic_usb;
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CODE {
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static int
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generic_usb_default_init(device_t dev)
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{
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return (0);
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}
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static int
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generic_usb_default_deinit(device_t dev)
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{
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return (0);
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}
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};
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HEADER {
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};
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#
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# Initialize the SoC bits
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#
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METHOD int init {
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device_t dev;
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} DEFAULT generic_usb_default_init;
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#
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# Deinitialize the SoC bits
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#
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METHOD int deinit {
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device_t dev;
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} DEFAULT generic_usb_default_deinit;
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