diff options
Diffstat (limited to 'sys/dev/usb/controller/ehci_ixp4xx.c')
-rw-r--r-- | sys/dev/usb/controller/ehci_ixp4xx.c | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/sys/dev/usb/controller/ehci_ixp4xx.c b/sys/dev/usb/controller/ehci_ixp4xx.c new file mode 100644 index 0000000..b369d47 --- /dev/null +++ b/sys/dev/usb/controller/ehci_ixp4xx.c @@ -0,0 +1,348 @@ +/*- + * Copyright (c) 2008 Sam Leffler. 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 ``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 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. + */ + +/* + * IXP435 attachment driver for the USB Enhanced Host Controller. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "opt_bus.h" + +#include <dev/usb/usb_mfunc.h> +#include <dev/usb/usb_defs.h> +#include <dev/usb/usb.h> + +#include <dev/usb/usb_core.h> +#include <dev/usb/usb_busdma.h> +#include <dev/usb/usb_process.h> +#include <dev/usb/usb_sw_transfer.h> +#include <dev/usb/usb_util.h> + +#include <dev/usb/usb_controller.h> +#include <dev/usb/usb_bus.h> +#include <dev/usb/controller/ehci.h> + +#include <arm/xscale/ixp425/ixp425reg.h> +#include <arm/xscale/ixp425/ixp425var.h> + +#define EHCI_VENDORID_IXP4XX 0x42fa05 +#define EHCI_HC_DEVSTR "IXP4XX Integrated USB 2.0 controller" + +struct ixp_ehci_softc { + ehci_softc_t base; /* storage for EHCI code */ + bus_space_tag_t iot; + bus_space_handle_t ioh; + struct bus_space tag; /* tag for private bus space ops */ +}; + +static device_attach_t ehci_ixp_attach; +static device_detach_t ehci_ixp_detach; +static device_shutdown_t ehci_ixp_shutdown; +static device_suspend_t ehci_ixp_suspend; +static device_resume_t ehci_ixp_resume; + +static uint8_t ehci_bs_r_1(void *, bus_space_handle_t, bus_size_t); +static void ehci_bs_w_1(void *, bus_space_handle_t, bus_size_t, u_int8_t); +static uint16_t ehci_bs_r_2(void *, bus_space_handle_t, bus_size_t); +static void ehci_bs_w_2(void *, bus_space_handle_t, bus_size_t, uint16_t); +static uint32_t ehci_bs_r_4(void *, bus_space_handle_t, bus_size_t); +static void ehci_bs_w_4(void *, bus_space_handle_t, bus_size_t, uint32_t); + +static int +ehci_ixp_suspend(device_t self) +{ + ehci_softc_t *sc = device_get_softc(self); + int err; + + err = bus_generic_suspend(self); + if (err) + return (err); + ehci_suspend(sc); + return (0); +} + +static int +ehci_ixp_resume(device_t self) +{ + ehci_softc_t *sc = device_get_softc(self); + + ehci_resume(sc); + + bus_generic_resume(self); + + return (0); +} + +static int +ehci_ixp_shutdown(device_t self) +{ + ehci_softc_t *sc = device_get_softc(self); + int err; + + err = bus_generic_shutdown(self); + if (err) + return (err); + ehci_shutdown(sc); + + return (0); +} + +static int +ehci_ixp_probe(device_t self) +{ + + device_set_desc(self, EHCI_HC_DEVSTR); + + return (BUS_PROBE_DEFAULT); +} + +static int +ehci_ixp_attach(device_t self) +{ + struct ixp_ehci_softc *isc = device_get_softc(self); + ehci_softc_t *sc = &isc->base; + int err; + int rid; + + /* initialise some bus fields */ + sc->sc_bus.parent = self; + sc->sc_bus.devices = sc->sc_devices; + sc->sc_bus.devices_max = EHCI_MAX_DEVICES; + + /* get all DMA memory */ + if (usb2_bus_mem_alloc_all(&sc->sc_bus, + USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) { + return (ENOMEM); + } + + sc->sc_bus.usbrev = USB_REV_2_0; + + /* NB: hints fix the memory location and irq */ + + rid = 0; + sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, RF_ACTIVE); + if (!sc->sc_io_res) { + device_printf(self, "Could not map memory\n"); + goto error; + } + + /* + * Craft special resource for bus space ops that handle + * byte-alignment of non-word addresses. Also, since + * we're already intercepting bus space ops we handle + * the register window offset that could otherwise be + * done with bus_space_subregion. + */ + isc->iot = rman_get_bustag(sc->sc_io_res); + isc->tag.bs_cookie = isc->iot; + /* read single */ + isc->tag.bs_r_1 = ehci_bs_r_1, + isc->tag.bs_r_2 = ehci_bs_r_2, + isc->tag.bs_r_4 = ehci_bs_r_4, + /* write (single) */ + isc->tag.bs_w_1 = ehci_bs_w_1, + isc->tag.bs_w_2 = ehci_bs_w_2, + isc->tag.bs_w_4 = ehci_bs_w_4, + + sc->sc_io_tag = &isc->tag; + sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); + sc->sc_io_size = IXP435_USB1_SIZE - 0x100; + + rid = 0; + sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid, + RF_ACTIVE); + if (sc->sc_irq_res == NULL) { + device_printf(self, "Could not allocate irq\n"); + goto error; + } + sc->sc_bus.bdev = device_add_child(self, "usbus", -1); + if (!sc->sc_bus.bdev) { + device_printf(self, "Could not add USB device\n"); + goto error; + } + device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); + device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR); + + sprintf(sc->sc_vendor, "Intel"); + + + err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, + NULL, (void *)(void *)ehci_interrupt, sc, &sc->sc_intr_hdl); + if (err) { + device_printf(self, "Could not setup irq, %d\n", err); + sc->sc_intr_hdl = NULL; + goto error; + } + + /* + * Arrange to force Host mode, select big-endian byte alignment, + * and arrange to not terminate reset operations (the adapter + * will ignore it if we do but might as well save a reg write). + * Also, the controller has an embedded Transaction Translator + * which means port speed must be read from the Port Status + * register following a port enable. + */ + sc->sc_flags |= EHCI_SCFLG_TT + | EHCI_SCFLG_SETMODE + | EHCI_SCFLG_BIGEDESC + | EHCI_SCFLG_BIGEMMIO + | EHCI_SCFLG_NORESTERM + ; + + err = ehci_init(sc); + if (!err) { + err = device_probe_and_attach(sc->sc_bus.bdev); + } + if (err) { + device_printf(self, "USB init failed err=%d\n", err); + goto error; + } + return (0); + +error: + ehci_ixp_detach(self); + return (ENXIO); +} + +static int +ehci_ixp_detach(device_t self) +{ + struct ixp_ehci_softc *isc = device_get_softc(self); + ehci_softc_t *sc = &isc->base; + device_t bdev; + int err; + + if (sc->sc_bus.bdev) { + bdev = sc->sc_bus.bdev; + device_detach(bdev); + device_delete_child(self, bdev); + } + /* during module unload there are lots of children leftover */ + device_delete_all_children(self); + + /* + * disable interrupts that might have been switched on in ehci_init + */ + if (sc->sc_io_res) { + EWRITE4(sc, EHCI_USBINTR, 0); + } + + if (sc->sc_irq_res && sc->sc_intr_hdl) { + /* + * only call ehci_detach() after ehci_init() + */ + ehci_detach(sc); + + err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl); + + if (err) + /* XXX or should we panic? */ + device_printf(self, "Could not tear down irq, %d\n", + err); + sc->sc_intr_hdl = NULL; + } + + if (sc->sc_irq_res) { + bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res); + sc->sc_irq_res = NULL; + } + if (sc->sc_io_res) { + bus_release_resource(self, SYS_RES_MEMORY, 0, + sc->sc_io_res); + sc->sc_io_res = NULL; + } + usb2_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc); + + return (0); +} + +/* + * Bus space accessors for PIO operations. + */ + +static uint8_t +ehci_bs_r_1(void *t, bus_space_handle_t h, bus_size_t o) +{ + return bus_space_read_1((bus_space_tag_t) t, h, + 0x100 + (o &~ 3) + (3 - (o & 3))); +} + +static void +ehci_bs_w_1(void *t, bus_space_handle_t h, bus_size_t o, u_int8_t v) +{ + panic("%s", __func__); +} + +static uint16_t +ehci_bs_r_2(void *t, bus_space_handle_t h, bus_size_t o) +{ + return bus_space_read_2((bus_space_tag_t) t, h, + 0x100 + (o &~ 3) + (2 - (o & 3))); +} + +static void +ehci_bs_w_2(void *t, bus_space_handle_t h, bus_size_t o, uint16_t v) +{ + panic("%s", __func__); +} + +static uint32_t +ehci_bs_r_4(void *t, bus_space_handle_t h, bus_size_t o) +{ + return bus_space_read_4((bus_space_tag_t) t, h, 0x100 + o); +} + +static void +ehci_bs_w_4(void *t, bus_space_handle_t h, bus_size_t o, uint32_t v) +{ + bus_space_write_4((bus_space_tag_t) t, h, 0x100 + o, v); +} + +static device_method_t ehci_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, ehci_ixp_probe), + DEVMETHOD(device_attach, ehci_ixp_attach), + DEVMETHOD(device_detach, ehci_ixp_detach), + DEVMETHOD(device_suspend, ehci_ixp_suspend), + DEVMETHOD(device_resume, ehci_ixp_resume), + DEVMETHOD(device_shutdown, ehci_ixp_shutdown), + + /* Bus interface */ + DEVMETHOD(bus_print_child, bus_generic_print_child), + + {0, 0} +}; + +static driver_t ehci_driver = { + "ehci", + ehci_methods, + sizeof(struct ixp_ehci_softc), +}; + +static devclass_t ehci_devclass; + +DRIVER_MODULE(ehci, ixp, ehci_driver, ehci_devclass, 0, 0); +MODULE_DEPEND(ehci, usb, 1, 1, 1); |