338 lines
8.9 KiB
C
338 lines
8.9 KiB
C
/* $FreeBSD$ */
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/*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (augustss@carlstedt.se) at
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* Carlstedt Research & Technology.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller.
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*
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* The EHCI 1.0 spec can be found at
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* http://developer.intel.com/technology/usb/download/ehci-r10.pdf
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* and the USB 2.0 spec at
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* http://www.usb.org/developers/docs/usb_20.zip
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*
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*/
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/* The low level controller code for EHCI has been split into
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* PCI probes and EHCI specific code. This was done to facilitate the
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* sharing of code between *BSD's
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*/
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#include "opt_bus.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/queue.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <pci/pcivar.h>
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#include <pci/pcireg.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/usbdivar.h>
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#include <dev/usb/usb_mem.h>
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#include <dev/usb/ehcireg.h>
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#include <dev/usb/ehcivar.h>
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#define PCI_EHCI_VENDORID_ACERLABS 0x10b9
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#define PCI_EHCI_VENDORID_AMD 0x1022
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#define PCI_EHCI_VENDORID_APPLE 0x106b
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#define PCI_EHCI_VENDORID_CMDTECH 0x1095
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#define PCI_EHCI_VENDORID_NEC 0x1033
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#define PCI_EHCI_VENDORID_OPTI 0x1045
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#define PCI_EHCI_VENDORID_SIS 0x1039
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#define PCI_EHCI_DEVICEID_NEC 0x00e01033
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static const char *ehci_device_nec = "NEC uPD 720100 USB 2.0 controller";
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static const char *ehci_device_generic = "EHCI (generic) USB 2.0 controller";
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#define PCI_EHCI_BASE_REG 0x10
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static int ehci_pci_attach(device_t self);
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static int ehci_pci_detach(device_t self);
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static const char *
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ehci_pci_match(device_t self)
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{
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u_int32_t device_id = pci_get_devid(self);
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switch (device_id) {
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case PCI_EHCI_DEVICEID_NEC:
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return (ehci_device_nec);
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default:
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if (pci_get_class(self) == PCIC_SERIALBUS
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&& pci_get_subclass(self) == PCIS_SERIALBUS_USB
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&& pci_get_progif(self) == PCI_INTERFACE_EHCI) {
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return (ehci_device_generic);
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}
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}
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return NULL; /* dunno */
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}
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static int
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ehci_pci_probe(device_t self)
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{
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const char *desc = ehci_pci_match(self);
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if (desc) {
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device_set_desc(self, desc);
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return 0;
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} else {
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return ENXIO;
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}
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}
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static int
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ehci_pci_attach(device_t self)
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{
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ehci_softc_t *sc = device_get_softc(self);
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device_t parent;
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device_t *neighbors;
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device_t *nbus;
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struct usbd_bus *bsc;
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int err;
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int rid;
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int ncomp;
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int count, buscount;
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int slot, function;
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int res;
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int i;
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switch(pci_read_config(self, PCI_USBREV, 1) & PCI_USBREV_MASK) {
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case PCI_USBREV_PRE_1_0:
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case PCI_USBREV_1_0:
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case PCI_USBREV_1_1:
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sc->sc_bus.usbrev = USBREV_UNKNOWN;
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printf("pre-2.0 USB rev\n");
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return ENXIO;
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case PCI_USBREV_2_0:
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sc->sc_bus.usbrev = USBREV_2_0;
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break;
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default:
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sc->sc_bus.usbrev = USBREV_UNKNOWN;
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break;
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}
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pci_enable_busmaster(self);
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rid = PCI_CBMEM;
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sc->io_res = bus_alloc_resource(self, SYS_RES_MEMORY, &rid,
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0, ~0, 1, RF_ACTIVE);
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if (!sc->io_res) {
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device_printf(self, "Could not map memory\n");
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return ENXIO;
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}
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sc->iot = rman_get_bustag(sc->io_res);
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sc->ioh = rman_get_bushandle(sc->io_res);
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rid = 0;
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sc->irq_res = bus_alloc_resource(self, SYS_RES_IRQ, &rid, 0, ~0, 1,
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RF_SHAREABLE | RF_ACTIVE);
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if (sc->irq_res == NULL) {
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device_printf(self, "Could not allocate irq\n");
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ehci_pci_detach(self);
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return ENXIO;
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}
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sc->sc_bus.bdev = device_add_child(self, "usb", -1);
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if (!sc->sc_bus.bdev) {
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device_printf(self, "Could not add USB device\n");
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ehci_pci_detach(self);
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return ENOMEM;
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}
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device_set_ivars(sc->sc_bus.bdev, sc);
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/* ehci_pci_match will never return NULL if ehci_pci_probe succeeded */
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device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
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switch (pci_get_vendor(self)) {
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case PCI_EHCI_VENDORID_ACERLABS:
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sprintf(sc->sc_vendor, "AcerLabs");
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break;
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case PCI_EHCI_VENDORID_AMD:
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sprintf(sc->sc_vendor, "AMD");
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break;
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case PCI_EHCI_VENDORID_APPLE:
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sprintf(sc->sc_vendor, "Apple");
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break;
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case PCI_EHCI_VENDORID_CMDTECH:
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sprintf(sc->sc_vendor, "CMDTECH");
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break;
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case PCI_EHCI_VENDORID_NEC:
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sprintf(sc->sc_vendor, "NEC");
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break;
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case PCI_EHCI_VENDORID_OPTI:
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sprintf(sc->sc_vendor, "OPTi");
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break;
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case PCI_EHCI_VENDORID_SIS:
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sprintf(sc->sc_vendor, "SiS");
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break;
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default:
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if (bootverbose)
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device_printf(self, "(New EHCI DeviceId=0x%08x)\n",
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pci_get_devid(self));
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sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
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}
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err = bus_setup_intr(self, sc->irq_res, INTR_TYPE_BIO,
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(driver_intr_t *) ehci_intr, sc, &sc->ih);
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if (err) {
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device_printf(self, "Could not setup irq, %d\n", err);
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sc->ih = NULL;
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ehci_pci_detach(self);
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return ENXIO;
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}
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/*
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* Find companion controllers. According to the spec they always
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* have lower function numbers so they should be enumerated already.
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*/
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parent = device_get_parent(self);
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res = device_get_children(parent, &neighbors, &count);
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if (res != 0) {
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device_printf(self, "Error finding companion busses\n");
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ehci_pci_detach(self);
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return ENXIO;
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}
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ncomp = 0;
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slot = pci_get_slot(self);
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function = pci_get_function(self);
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for (i = 0; i < count; i++) {
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if (pci_get_slot(neighbors[i]) == slot && \
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pci_get_function(neighbors[i]) < function) {
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res = device_get_children(neighbors[i],
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&nbus, &buscount);
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if (res != 0 || buscount != 1)
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continue;
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bsc = device_get_softc(nbus[0]);
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printf("ehci_pci_attach: companion %s\n",
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USBDEVNAME(bsc->bdev));
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sc->sc_comps[ncomp++] = bsc;
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if (ncomp >= EHCI_COMPANION_MAX)
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break;
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}
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}
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sc->sc_ncomp = ncomp;
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err = ehci_init(sc);
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if (!err)
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err = device_probe_and_attach(sc->sc_bus.bdev);
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if (err) {
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device_printf(self, "USB init failed err=%d\n", err);
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#if 0 /* TODO */
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ehci_pci_detach(self);
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#endif
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return EIO;
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}
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return 0;
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}
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static int
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ehci_pci_detach(device_t self)
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{
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ehci_softc_t *sc = device_get_softc(self);
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/*
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* XXX this code is not yet fit to be used as detach for the EHCI
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* controller
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*/
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/*
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* disable interrupts that might have been switched on in ehci_init
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*/
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if (sc->iot && sc->ioh)
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bus_space_write_4(sc->iot, sc->ioh, EHCI_USBINTR, 0);
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if (sc->irq_res && sc->ih) {
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int err = bus_teardown_intr(self, sc->irq_res, sc->ih);
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if (err)
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/* XXX or should we panic? */
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device_printf(self, "Could not tear down irq, %d\n",
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err);
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sc->ih = NULL;
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}
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if (sc->sc_bus.bdev) {
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device_delete_child(self, sc->sc_bus.bdev);
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sc->sc_bus.bdev = NULL;
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}
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if (sc->irq_res) {
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bus_release_resource(self, SYS_RES_IRQ, 0, sc->irq_res);
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sc->irq_res = NULL;
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}
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if (sc->io_res) {
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bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, sc->io_res);
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sc->io_res = NULL;
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sc->iot = 0;
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sc->ioh = 0;
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}
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return 0;
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}
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static device_method_t ehci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ehci_pci_probe),
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DEVMETHOD(device_attach, ehci_pci_attach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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/* Bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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{0, 0}
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};
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static driver_t ehci_driver = {
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"ehci",
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ehci_methods,
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sizeof(ehci_softc_t),
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};
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static devclass_t ehci_devclass;
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DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0);
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DRIVER_MODULE(ehci, cardbus, ehci_driver, ehci_devclass, 0, 0);
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