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/*-
* 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.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/usb/controller/ehci_pci.c 238134 2012-07-05 15:35:59Z mav $");
/*
* 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 <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usb_core.h>
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_util.h>
#include <dev/usb/usb_controller.h>
#include <dev/usb/usb_bus.h>
#include <dev/usb/usb_pci.h>
#include <dev/usb/controller/ehci.h>
#include <dev/usb/controller/ehcireg.h>
#include "usb_if.h"
#define PCI_EHCI_VENDORID_ACERLABS 0x10b9
#define PCI_EHCI_VENDORID_AMD 0x1022
#define PCI_EHCI_VENDORID_APPLE 0x106b
#define PCI_EHCI_VENDORID_ATI 0x1002
#define PCI_EHCI_VENDORID_CMDTECH 0x1095
#define PCI_EHCI_VENDORID_INTEL 0x8086
#define PCI_EHCI_VENDORID_NEC 0x1033
#define PCI_EHCI_VENDORID_OPTI 0x1045
#define PCI_EHCI_VENDORID_PHILIPS 0x1131
#define PCI_EHCI_VENDORID_SIS 0x1039
#define PCI_EHCI_VENDORID_NVIDIA 0x12D2
#define PCI_EHCI_VENDORID_NVIDIA2 0x10DE
#define PCI_EHCI_VENDORID_VIA 0x1106
static device_probe_t ehci_pci_probe;
static device_attach_t ehci_pci_attach;
static device_detach_t ehci_pci_detach;
static usb_take_controller_t ehci_pci_take_controller;
static const char *
ehci_pci_match(device_t self)
{
uint32_t device_id = pci_get_devid(self);
switch (device_id) {
case 0x523910b9:
return "ALi M5239 USB 2.0 controller";
case 0x10227463:
return "AMD 8111 USB 2.0 controller";
case 0x20951022:
return ("AMD CS5536 (Geode) USB 2.0 controller");
case 0x43451002:
return "ATI SB200 USB 2.0 controller";
case 0x43731002:
return "ATI SB400 USB 2.0 controller";
case 0x43961002:
return ("AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller");
case 0x1e268086:
return ("Intel Panther Point USB 2.0 controller");
case 0x1e2d8086:
return ("Intel Panther Point USB 2.0 controller");
case 0x25ad8086:
return "Intel 6300ESB USB 2.0 controller";
case 0x24cd8086:
return "Intel 82801DB/L/M (ICH4) USB 2.0 controller";
case 0x24dd8086:
return "Intel 82801EB/R (ICH5) USB 2.0 controller";
case 0x265c8086:
return "Intel 82801FB (ICH6) USB 2.0 controller";
case 0x268c8086:
return ("Intel 63XXESB USB 2.0 controller");
case 0x27cc8086:
return "Intel 82801GB/R (ICH7) USB 2.0 controller";
case 0x28368086:
return "Intel 82801H (ICH8) USB 2.0 controller USB2-A";
case 0x283a8086:
return "Intel 82801H (ICH8) USB 2.0 controller USB2-B";
case 0x293a8086:
return "Intel 82801I (ICH9) USB 2.0 controller";
case 0x293c8086:
return "Intel 82801I (ICH9) USB 2.0 controller";
case 0x3a3a8086:
return "Intel 82801JI (ICH10) USB 2.0 controller USB-A";
case 0x3a3c8086:
return "Intel 82801JI (ICH10) USB 2.0 controller USB-B";
case 0x3b348086:
return ("Intel PCH USB 2.0 controller USB-A");
case 0x3b3c8086:
return ("Intel PCH USB 2.0 controller USB-B");
case 0x00e01033:
return ("NEC uPD 720100 USB 2.0 controller");
case 0x006810de:
return "NVIDIA nForce2 USB 2.0 controller";
case 0x008810de:
return "NVIDIA nForce2 Ultra 400 USB 2.0 controller";
case 0x00d810de:
return "NVIDIA nForce3 USB 2.0 controller";
case 0x00e810de:
return "NVIDIA nForce3 250 USB 2.0 controller";
case 0x005b10de:
return "NVIDIA nForce4 USB 2.0 controller";
case 0x036d10de:
return "NVIDIA nForce MCP55 USB 2.0 controller";
case 0x03f210de:
return "NVIDIA nForce MCP61 USB 2.0 controller";
case 0x0aa610de:
return "NVIDIA nForce MCP79 USB 2.0 controller";
case 0x0aa910de:
return "NVIDIA nForce MCP79 USB 2.0 controller";
case 0x0aaa10de:
return "NVIDIA nForce MCP79 USB 2.0 controller";
case 0x15621131:
return "Philips ISP156x USB 2.0 controller";
case 0x31041106:
return ("VIA VT6202 USB 2.0 controller");
default:
break;
}
if ((pci_get_class(self) == PCIC_SERIALBUS)
&& (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
&& (pci_get_progif(self) == PCI_INTERFACE_EHCI)) {
return ("EHCI (generic) USB 2.0 controller");
}
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 void
ehci_pci_ati_quirk(device_t self, uint8_t is_sb700)
{
device_t smbdev;
uint32_t val;
if (is_sb700) {
/* Lookup SMBUS PCI device */
smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385);
if (smbdev == NULL)
return;
val = pci_get_revid(smbdev);
if (val != 0x3a && val != 0x3b)
return;
}
/*
* Note: this bit is described as reserved in SB700
* Register Reference Guide.
*/
val = pci_read_config(self, 0x53, 1);
if (!(val & 0x8)) {
val |= 0x8;
pci_write_config(self, 0x53, val, 1);
device_printf(self, "AMD SB600/700 quirk applied\n");
}
}
static void
ehci_pci_via_quirk(device_t self)
{
uint32_t val;
if ((pci_get_device(self) == 0x3104) &&
((pci_get_revid(self) & 0xf0) == 0x60)) {
/* Correct schedule sleep time to 10us */
val = pci_read_config(self, 0x4b, 1);
if (val & 0x20)
return;
val |= 0x20;
pci_write_config(self, 0x4b, val, 1);
device_printf(self, "VIA-quirk applied\n");
}
}
static int
ehci_pci_attach(device_t self)
{
ehci_softc_t *sc = device_get_softc(self);
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 (usb_bus_mem_alloc_all(&sc->sc_bus,
USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
return (ENOMEM);
}
pci_enable_busmaster(self);
switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) {
case PCI_USB_REV_PRE_1_0:
case PCI_USB_REV_1_0:
case PCI_USB_REV_1_1:
/*
* NOTE: some EHCI USB controllers have the wrong USB
* revision number. It appears those controllers are
* fully compliant so we just ignore this value in
* some common cases.
*/
device_printf(self, "pre-2.0 USB revision (ignored)\n");
/* fallthrough */
case PCI_USB_REV_2_0:
break;
default:
/* Quirk for Parallels Desktop 4.0 */
device_printf(self, "USB revision is unknown. Assuming v2.0.\n");
break;
}
rid = PCI_CBMEM;
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;
}
sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
sc->sc_io_size = rman_get_size(sc->sc_io_res);
rid = 0;
sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
RF_SHAREABLE | 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);
/*
* 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_ATI:
sprintf(sc->sc_vendor, "ATI");
break;
case PCI_EHCI_VENDORID_CMDTECH:
sprintf(sc->sc_vendor, "CMDTECH");
break;
case PCI_EHCI_VENDORID_INTEL:
sprintf(sc->sc_vendor, "Intel");
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_PHILIPS:
sprintf(sc->sc_vendor, "Philips");
break;
case PCI_EHCI_VENDORID_SIS:
sprintf(sc->sc_vendor, "SiS");
break;
case PCI_EHCI_VENDORID_NVIDIA:
case PCI_EHCI_VENDORID_NVIDIA2:
sprintf(sc->sc_vendor, "nVidia");
break;
case PCI_EHCI_VENDORID_VIA:
sprintf(sc->sc_vendor, "VIA");
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));
}
#if (__FreeBSD_version >= 700031)
err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
#else
err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
(driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
#endif
if (err) {
device_printf(self, "Could not setup irq, %d\n", err);
sc->sc_intr_hdl = NULL;
goto error;
}
ehci_pci_take_controller(self);
/* Undocumented quirks taken from Linux */
switch (pci_get_vendor(self)) {
case PCI_EHCI_VENDORID_ATI:
/* SB600 and SB700 EHCI quirk */
switch (pci_get_device(self)) {
case 0x4386:
ehci_pci_ati_quirk(self, 0);
break;
case 0x4396:
ehci_pci_ati_quirk(self, 1);
break;
default:
break;
}
break;
case PCI_EHCI_VENDORID_VIA:
ehci_pci_via_quirk(self);
break;
default:
break;
}
/* Dropped interrupts workaround */
switch (pci_get_vendor(self)) {
case PCI_EHCI_VENDORID_ATI:
case PCI_EHCI_VENDORID_VIA:
sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
if (bootverbose)
device_printf(self,
"Dropped interrupts workaround enabled\n");
break;
default:
break;
}
/* Doorbell feature workaround */
switch (pci_get_vendor(self)) {
case PCI_EHCI_VENDORID_NVIDIA:
case PCI_EHCI_VENDORID_NVIDIA2:
sc->sc_flags |= EHCI_SCFLG_IAADBUG;
if (bootverbose)
device_printf(self,
"Doorbell workaround enabled\n");
break;
default:
break;
}
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_pci_detach(self);
return (ENXIO);
}
static int
ehci_pci_detach(device_t self)
{
ehci_softc_t *sc = device_get_softc(self);
device_t bdev;
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_children(self);
pci_disable_busmaster(self);
if (sc->sc_irq_res && sc->sc_intr_hdl) {
/*
* only call ehci_detach() after ehci_init()
*/
ehci_detach(sc);
int 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, PCI_CBMEM,
sc->sc_io_res);
sc->sc_io_res = NULL;
}
usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
return (0);
}
static int
ehci_pci_take_controller(device_t self)
{
ehci_softc_t *sc = device_get_softc(self);
uint32_t cparams;
uint32_t eec;
uint16_t to;
uint8_t eecp;
uint8_t bios_sem;
cparams = EREAD4(sc, EHCI_HCCPARAMS);
/* Synchronise with the BIOS if it owns the controller. */
for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
eecp = EHCI_EECP_NEXT(eec)) {
eec = pci_read_config(self, eecp, 4);
if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) {
continue;
}
bios_sem = pci_read_config(self, eecp +
EHCI_LEGSUP_BIOS_SEM, 1);
if (bios_sem == 0) {
continue;
}
device_printf(sc->sc_bus.bdev, "waiting for BIOS "
"to give up control\n");
pci_write_config(self, eecp +
EHCI_LEGSUP_OS_SEM, 1, 1);
to = 500;
while (1) {
bios_sem = pci_read_config(self, eecp +
EHCI_LEGSUP_BIOS_SEM, 1);
if (bios_sem == 0)
break;
if (--to == 0) {
device_printf(sc->sc_bus.bdev,
"timed out waiting for BIOS\n");
break;
}
usb_pause_mtx(NULL, hz / 100); /* wait 10ms */
}
}
return (0);
}
static device_method_t ehci_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ehci_pci_probe),
DEVMETHOD(device_attach, ehci_pci_attach),
DEVMETHOD(device_detach, ehci_pci_detach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(usb_take_controller, ehci_pci_take_controller),
DEVMETHOD_END
};
static driver_t ehci_driver = {
.name = "ehci",
.methods = ehci_pci_methods,
.size = sizeof(struct ehci_softc),
};
static devclass_t ehci_devclass;
DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0);
MODULE_DEPEND(ehci, usb, 1, 1, 1);