diff options
Diffstat (limited to 'sys/dev/usb/ehci_pci.c')
| -rw-r--r-- | sys/dev/usb/ehci_pci.c | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/sys/dev/usb/ehci_pci.c b/sys/dev/usb/ehci_pci.c new file mode 100644 index 0000000..0e407d7 --- /dev/null +++ b/sys/dev/usb/ehci_pci.c @@ -0,0 +1,335 @@ +/* $FreeBSD$ */ + +/* + * Copyright (c) 1998 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Lennart Augustsson (augustss@carlstedt.se) at + * Carlstedt Research & Technology. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ + +/* + * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller. + * + * The EHCI 1.0 spec can be found at + * http://developer.intel.com/technology/usb/download/ehci-r10.pdf + * and the USB 2.0 spec at + * http://www.usb.org/developers/docs/usb_20.zip + * + */ + +/* The low level controller code for EHCI has been split into + * PCI probes and EHCI specific code. This was done to facilitate the + * sharing of code between *BSD's + */ + + +#include "opt_bus.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/bus.h> +#include <sys/queue.h> +#include <machine/bus.h> +#include <sys/rman.h> +#include <machine/resource.h> + +#include <pci/pcivar.h> +#include <pci/pcireg.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/ehcireg.h> +#include <dev/usb/ehcivar.h> + +#define PCI_EHCI_VENDORID_ACERLABS 0x10b9 +#define PCI_EHCI_VENDORID_AMD 0x1022 +#define PCI_EHCI_VENDORID_APPLE 0x106b +#define PCI_EHCI_VENDORID_CMDTECH 0x1095 +#define PCI_EHCI_VENDORID_NEC 0x1033 +#define PCI_EHCI_VENDORID_OPTI 0x1045 +#define PCI_EHCI_VENDORID_SIS 0x1039 + +#define PCI_EHCI_DEVICEID_NEC 0x00e01033 +static const char *ehci_device_nec = "NEC uPD 720100 USB 2.0 controller"; + +static const char *ehci_device_generic = "EHCI (generic) USB 2.0 controller"; + +#define PCI_EHCI_BASE_REG 0x10 + + +static int ehci_pci_attach(device_t self); +static int ehci_pci_detach(device_t self); + +static const char * +ehci_pci_match(device_t self) +{ + u_int32_t device_id = pci_get_devid(self); + + switch (device_id) { + case PCI_EHCI_DEVICEID_NEC: + return (ehci_device_nec); + default: + if (pci_get_class(self) == PCIC_SERIALBUS + && pci_get_subclass(self) == PCIS_SERIALBUS_USB + && pci_get_progif(self) == PCI_INTERFACE_EHCI) { + return (ehci_device_generic); + } + } + + return NULL; /* dunno */ +} + +static int +ehci_pci_probe(device_t self) +{ + const char *desc = ehci_pci_match(self); + + if (desc) { + device_set_desc(self, desc); + return 0; + } else { + return ENXIO; + } +} + +static int +ehci_pci_attach(device_t self) +{ + ehci_softc_t *sc = device_get_softc(self); + device_t parent; + device_t *neighbors; + device_t *nbus; + struct usbd_bus *bsc; + int err; + int rid; + int ncomp; + int count, buscount; + int slot, function; + int res; + int i; + + switch(pci_read_config(self, PCI_USBREV, 1) & PCI_USBREV_MASK) { + case PCI_USBREV_PRE_1_0: + case PCI_USBREV_1_0: + case PCI_USBREV_1_1: + sc->sc_bus.usbrev = USBREV_UNKNOWN; + printf("pre-2.0 USB rev\n"); + return ENXIO; + case PCI_USBREV_2_0: + sc->sc_bus.usbrev = USBREV_2_0; + break; + default: + sc->sc_bus.usbrev = USBREV_UNKNOWN; + break; + } + + rid = PCI_CBMEM; + sc->io_res = bus_alloc_resource(self, SYS_RES_MEMORY, &rid, + 0, ~0, 1, RF_ACTIVE); + if (!sc->io_res) { + device_printf(self, "Could not map memory\n"); + return ENXIO; + } + sc->iot = rman_get_bustag(sc->io_res); + sc->ioh = rman_get_bushandle(sc->io_res); + + rid = 0; + sc->irq_res = bus_alloc_resource(self, SYS_RES_IRQ, &rid, 0, ~0, 1, + RF_SHAREABLE | RF_ACTIVE); + if (sc->irq_res == NULL) { + device_printf(self, "Could not allocate irq\n"); + ehci_pci_detach(self); + return ENXIO; + } + sc->sc_bus.bdev = device_add_child(self, "usb", -1); + if (!sc->sc_bus.bdev) { + device_printf(self, "Could not add USB device\n"); + ehci_pci_detach(self); + return ENOMEM; + } + device_set_ivars(sc->sc_bus.bdev, sc); + + /* ehci_pci_match will never return NULL if ehci_pci_probe succeeded */ + device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self)); + switch (pci_get_vendor(self)) { + case PCI_EHCI_VENDORID_ACERLABS: + sprintf(sc->sc_vendor, "AcerLabs"); + break; + case PCI_EHCI_VENDORID_AMD: + sprintf(sc->sc_vendor, "AMD"); + break; + case PCI_EHCI_VENDORID_APPLE: + sprintf(sc->sc_vendor, "Apple"); + break; + case PCI_EHCI_VENDORID_CMDTECH: + sprintf(sc->sc_vendor, "CMDTECH"); + break; + case PCI_EHCI_VENDORID_NEC: + sprintf(sc->sc_vendor, "NEC"); + break; + case PCI_EHCI_VENDORID_OPTI: + sprintf(sc->sc_vendor, "OPTi"); + break; + case PCI_EHCI_VENDORID_SIS: + sprintf(sc->sc_vendor, "SiS"); + break; + default: + if (bootverbose) + device_printf(self, "(New EHCI DeviceId=0x%08x)\n", + pci_get_devid(self)); + sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self)); + } + + err = bus_setup_intr(self, sc->irq_res, INTR_TYPE_BIO, + (driver_intr_t *) ehci_intr, sc, &sc->ih); + if (err) { + device_printf(self, "Could not setup irq, %d\n", err); + sc->ih = NULL; + ehci_pci_detach(self); + return ENXIO; + } + + /* + * Find companion controllers. According to the spec they always + * have lower function numbers so they should be enumerated already. + */ + parent = device_get_parent(self); + res = device_get_children(parent, &neighbors, &count); + if (res != 0) { + device_printf(self, "Error finding companion busses\n"); + ehci_pci_detach(self); + return ENXIO; + } + ncomp = 0; + slot = pci_get_slot(self); + function = pci_get_function(self); + for (i = 0; i < count; i++) { + if (pci_get_slot(neighbors[i]) == slot && \ + pci_get_function(neighbors[i]) < function) { + res = device_get_children(neighbors[i], + &nbus, &buscount); + if (res != 0 || buscount != 1) + continue; + bsc = device_get_softc(nbus[0]); + printf("ehci_pci_attach: companion %s\n", + USBDEVNAME(bsc->bdev)); + sc->sc_comps[ncomp++] = bsc; + if (ncomp >= EHCI_COMPANION_MAX) + break; + } + } + sc->sc_ncomp = ncomp; + + 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); +#if 0 /* TODO */ + ehci_pci_detach(self); +#endif + return EIO; + } + return 0; +} + +static int +ehci_pci_detach(device_t self) +{ + ehci_softc_t *sc = device_get_softc(self); + + /* + * XXX this code is not yet fit to be used as detach for the EHCI + * controller + */ + + /* + * disable interrupts that might have been switched on in ehci_init + */ + if (sc->iot && sc->ioh) + bus_space_write_4(sc->iot, sc->ioh, EHCI_USBINTR, 0); + + if (sc->irq_res && sc->ih) { + int err = bus_teardown_intr(self, sc->irq_res, sc->ih); + + if (err) + /* XXX or should we panic? */ + device_printf(self, "Could not tear down irq, %d\n", + err); + sc->ih = NULL; + } + if (sc->sc_bus.bdev) { + device_delete_child(self, sc->sc_bus.bdev); + sc->sc_bus.bdev = NULL; + } + if (sc->irq_res) { + bus_release_resource(self, SYS_RES_IRQ, 0, sc->irq_res); + sc->irq_res = NULL; + } + if (sc->io_res) { + bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, sc->io_res); + sc->io_res = NULL; + sc->iot = 0; + sc->ioh = 0; + } + return 0; +} + +static device_method_t ehci_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, ehci_pci_probe), + DEVMETHOD(device_attach, ehci_pci_attach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + + /* Bus interface */ + DEVMETHOD(bus_print_child, bus_generic_print_child), + + {0, 0} +}; + +static driver_t ehci_driver = { + "ehci", + ehci_methods, + sizeof(ehci_softc_t), +}; + +static devclass_t ehci_devclass; + +DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0); +DRIVER_MODULE(ehci, cardbus, ehci_driver, ehci_devclass, 0, 0); |
