cb32a134a5
in PR kern/52639, as well as some general cleaning-up...
(As proposed on tech-kern@ with additional changes and enhancements.)
Details of changes:
* All history arguments are now stored as uintmax_t values[1], both in
the kernel and in the structures used for exporting the history data
to userland via sysctl(9). This avoids problems on some architectures
where passing a 64-bit (or larger) value to printf(3) can cause it to
process the value as multiple arguments. (This can be particularly
problematic when printf()'s format string is not a literal, since in
that case the compiler cannot know how large each argument should be.)
* Update the data structures used for exporting kernel history data to
include a version number as well as the length of history arguments.
* All [2] existing users of kernhist(9) have had their format strings
updated. Each format specifier now includes an explicit length
modifier 'j' to refer to numeric values of the size of uintmax_t.
* All [2] existing users of kernhist(9) have had their format strings
updated to replace uses of "%p" with "%#jx", and the pointer
arguments are now cast to (uintptr_t) before being subsequently cast
to (uintmax_t). This is needed to avoid compiler warnings about
casting "pointer to integer of a different size."
* All [2] existing users of kernhist(9) have had instances of "%s" or
"%c" format strings replaced with numeric formats; several instances
of mis-match between format string and argument list have been fixed.
* vmstat(1) has been modified to handle the new size of arguments in the
history data as exported by sysctl(9).
* vmstat(1) now provides a warning message if the history requested with
the -u option does not exist (previously, this condition was silently
ignored, with only a single blank line being printed).
* vmstat(1) now checks the version and argument length included in the
data exported via sysctl(9) and exits if they do not match the values
with which vmstat was built.
* The kernhist(9) man-page has been updated to note the additional
requirements imposed on the format strings, along with several other
minor changes and enhancements.
[1] It would have been possible to use an explicit length (for example,
uint64_t) for the history arguments. But that would require another
"rototill" of all the users in the future when we add support for an
architecture that supports a larger size. Also, the printf(3) format
specifiers for explicitly-sized values, such as "%"PRIu64, are much
more verbose (and less aesthetically appealing, IMHO) than simply
using "%ju".
[2] I've tried very hard to find "all [the] existing users of kernhist(9)"
but it is possible that I've missed some of them. I would be glad to
update any stragglers that anyone identifies.
962 lines
27 KiB
C
962 lines
27 KiB
C
/* $NetBSD: uhub.c,v 1.137 2017/10/28 00:37:12 pgoyette Exp $ */
|
|
/* $FreeBSD: src/sys/dev/usb/uhub.c,v 1.18 1999/11/17 22:33:43 n_hibma Exp $ */
|
|
/* $OpenBSD: uhub.c,v 1.86 2015/06/29 18:27:40 mpi Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1998, 2004 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Lennart Augustsson (lennart@augustsson.net) 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.
|
|
*/
|
|
|
|
/*
|
|
* USB spec: http://www.usb.org/developers/docs/usbspec.zip
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: uhub.c,v 1.137 2017/10/28 00:37:12 pgoyette Exp $");
|
|
|
|
#ifdef _KERNEL_OPT
|
|
#include "opt_usb.h"
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
|
|
#include <sys/bus.h>
|
|
#include <sys/device.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/kmem.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/systm.h>
|
|
|
|
|
|
#include <dev/usb/usb.h>
|
|
#include <dev/usb/usbdi.h>
|
|
#include <dev/usb/usbdi_util.h>
|
|
#include <dev/usb/usbdivar.h>
|
|
#include <dev/usb/usbhist.h>
|
|
|
|
#ifdef USB_DEBUG
|
|
#ifndef UHUB_DEBUG
|
|
#define uhubdebug 0
|
|
#else
|
|
static int uhubdebug = 0;
|
|
|
|
SYSCTL_SETUP(sysctl_hw_uhub_setup, "sysctl hw.uhub setup")
|
|
{
|
|
int err;
|
|
const struct sysctlnode *rnode;
|
|
const struct sysctlnode *cnode;
|
|
|
|
err = sysctl_createv(clog, 0, NULL, &rnode,
|
|
CTLFLAG_PERMANENT, CTLTYPE_NODE, "uhub",
|
|
SYSCTL_DESCR("uhub global controls"),
|
|
NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL);
|
|
|
|
if (err)
|
|
goto fail;
|
|
|
|
/* control debugging printfs */
|
|
err = sysctl_createv(clog, 0, &rnode, &cnode,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT,
|
|
"debug", SYSCTL_DESCR("Enable debugging output"),
|
|
NULL, 0, &uhubdebug, sizeof(uhubdebug), CTL_CREATE, CTL_EOL);
|
|
if (err)
|
|
goto fail;
|
|
|
|
return;
|
|
fail:
|
|
aprint_error("%s: sysctl_createv failed (err = %d)\n", __func__, err);
|
|
}
|
|
|
|
#endif /* UHUB_DEBUG */
|
|
#endif /* USB_DEBUG */
|
|
|
|
#define DPRINTF(FMT,A,B,C,D) USBHIST_LOGN(uhubdebug,1,FMT,A,B,C,D)
|
|
#define DPRINTFN(N,FMT,A,B,C,D) USBHIST_LOGN(uhubdebug,N,FMT,A,B,C,D)
|
|
#define UHUBHIST_FUNC() USBHIST_FUNC()
|
|
#define UHUBHIST_CALLED(name) USBHIST_CALLED(uhubdebug)
|
|
|
|
struct uhub_softc {
|
|
device_t sc_dev; /* base device */
|
|
struct usbd_device *sc_hub; /* USB device */
|
|
int sc_proto; /* device protocol */
|
|
struct usbd_pipe *sc_ipipe; /* interrupt pipe */
|
|
|
|
kmutex_t sc_lock;
|
|
|
|
uint8_t *sc_statusbuf;
|
|
uint8_t *sc_statuspend;
|
|
uint8_t *sc_status;
|
|
size_t sc_statuslen;
|
|
int sc_explorepending;
|
|
|
|
u_char sc_running;
|
|
};
|
|
|
|
#define UHUB_IS_HIGH_SPEED(sc) \
|
|
((sc)->sc_proto == UDPROTO_HSHUBSTT || (sc)->sc_proto == UDPROTO_HSHUBMTT)
|
|
#define UHUB_IS_SINGLE_TT(sc) ((sc)->sc_proto == UDPROTO_HSHUBSTT)
|
|
|
|
#define PORTSTAT_ISSET(sc, port) \
|
|
((sc)->sc_status[(port) / 8] & (1 << ((port) % 8)))
|
|
|
|
Static usbd_status uhub_explore(struct usbd_device *);
|
|
Static void uhub_intr(struct usbd_xfer *, void *, usbd_status);
|
|
|
|
|
|
/*
|
|
* We need two attachment points:
|
|
* hub to usb and hub to hub
|
|
* Every other driver only connects to hubs
|
|
*/
|
|
|
|
int uhub_match(device_t, cfdata_t, void *);
|
|
void uhub_attach(device_t, device_t, void *);
|
|
int uhub_rescan(device_t, const char *, const int *);
|
|
void uhub_childdet(device_t, device_t);
|
|
int uhub_detach(device_t, int);
|
|
extern struct cfdriver uhub_cd;
|
|
CFATTACH_DECL3_NEW(uhub, sizeof(struct uhub_softc), uhub_match,
|
|
uhub_attach, uhub_detach, NULL, uhub_rescan, uhub_childdet,
|
|
DVF_DETACH_SHUTDOWN);
|
|
CFATTACH_DECL2_NEW(uroothub, sizeof(struct uhub_softc), uhub_match,
|
|
uhub_attach, uhub_detach, NULL, uhub_rescan, uhub_childdet);
|
|
|
|
/*
|
|
* Setting this to 1 makes sure than an uhub attaches even at higher
|
|
* priority than ugen when ugen_override is set to 1. This allows to
|
|
* probe the whole USB bus and attach functions with ugen.
|
|
*/
|
|
int uhub_ubermatch = 0;
|
|
|
|
static usbd_status
|
|
usbd_get_hub_desc(struct usbd_device *dev, usb_hub_descriptor_t *hd, int speed)
|
|
{
|
|
usb_device_request_t req;
|
|
usbd_status err;
|
|
int nports;
|
|
|
|
UHUBHIST_FUNC(); UHUBHIST_CALLED();
|
|
|
|
/* don't issue UDESC_HUB to SS hub, or it would stall */
|
|
if (dev->ud_depth != 0 && USB_IS_SS(dev->ud_speed)) {
|
|
usb_hub_ss_descriptor_t hssd;
|
|
int rmvlen;
|
|
|
|
memset(&hssd, 0, sizeof(hssd));
|
|
req.bmRequestType = UT_READ_CLASS_DEVICE;
|
|
req.bRequest = UR_GET_DESCRIPTOR;
|
|
USETW2(req.wValue, UDESC_SS_HUB, 0);
|
|
USETW(req.wIndex, 0);
|
|
USETW(req.wLength, USB_HUB_SS_DESCRIPTOR_SIZE);
|
|
DPRINTFN(1, "getting sshub descriptor", 0, 0, 0, 0);
|
|
err = usbd_do_request(dev, &req, &hssd);
|
|
nports = hssd.bNbrPorts;
|
|
if (dev->ud_depth != 0 && nports > UHD_SS_NPORTS_MAX) {
|
|
DPRINTF("num of ports %jd exceeds maxports %jd",
|
|
nports, UHD_SS_NPORTS_MAX, 0, 0);
|
|
nports = hd->bNbrPorts = UHD_SS_NPORTS_MAX;
|
|
}
|
|
rmvlen = (nports + 7) / 8;
|
|
hd->bDescLength = USB_HUB_DESCRIPTOR_SIZE +
|
|
(rmvlen > 1 ? rmvlen : 1) - 1;
|
|
memcpy(hd->DeviceRemovable, hssd.DeviceRemovable, rmvlen);
|
|
hd->bDescriptorType = hssd.bDescriptorType;
|
|
hd->bNbrPorts = hssd.bNbrPorts;
|
|
hd->wHubCharacteristics[0] = hssd.wHubCharacteristics[0];
|
|
hd->wHubCharacteristics[1] = hssd.wHubCharacteristics[1];
|
|
hd->bPwrOn2PwrGood = hssd.bPwrOn2PwrGood;
|
|
hd->bHubContrCurrent = hssd.bHubContrCurrent;
|
|
} else {
|
|
req.bmRequestType = UT_READ_CLASS_DEVICE;
|
|
req.bRequest = UR_GET_DESCRIPTOR;
|
|
USETW2(req.wValue, UDESC_HUB, 0);
|
|
USETW(req.wIndex, 0);
|
|
USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE);
|
|
DPRINTFN(1, "getting hub descriptor", 0, 0, 0, 0);
|
|
err = usbd_do_request(dev, &req, hd);
|
|
nports = hd->bNbrPorts;
|
|
if (!err && nports > 7) {
|
|
USETW(req.wLength,
|
|
USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8);
|
|
err = usbd_do_request(dev, &req, hd);
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static usbd_status
|
|
usbd_set_hub_depth(struct usbd_device *dev, int depth)
|
|
{
|
|
usb_device_request_t req;
|
|
|
|
req.bmRequestType = UT_WRITE_CLASS_DEVICE;
|
|
req.bRequest = UR_SET_HUB_DEPTH;
|
|
USETW(req.wValue, depth);
|
|
USETW(req.wIndex, 0);
|
|
USETW(req.wLength, 0);
|
|
return usbd_do_request(dev, &req, 0);
|
|
}
|
|
|
|
int
|
|
uhub_match(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
struct usb_attach_arg *uaa = aux;
|
|
int matchvalue;
|
|
|
|
UHUBHIST_FUNC(); UHUBHIST_CALLED();
|
|
|
|
if (uhub_ubermatch)
|
|
matchvalue = UMATCH_HIGHEST+1;
|
|
else
|
|
matchvalue = UMATCH_DEVCLASS_DEVSUBCLASS;
|
|
|
|
DPRINTFN(5, "uaa=%#jx", (uintptr_t)uaa, 0, 0, 0);
|
|
/*
|
|
* The subclass for hubs seems to be 0 for some and 1 for others,
|
|
* so we just ignore the subclass.
|
|
*/
|
|
if (uaa->uaa_class == UDCLASS_HUB)
|
|
return matchvalue;
|
|
return UMATCH_NONE;
|
|
}
|
|
|
|
void
|
|
uhub_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct uhub_softc *sc = device_private(self);
|
|
struct usb_attach_arg *uaa = aux;
|
|
struct usbd_device *dev = uaa->uaa_device;
|
|
char *devinfop;
|
|
usbd_status err;
|
|
struct usbd_hub *hub = NULL;
|
|
usb_hub_descriptor_t hubdesc;
|
|
int p, port, nports, nremov, pwrdly;
|
|
struct usbd_interface *iface;
|
|
usb_endpoint_descriptor_t *ed;
|
|
struct usbd_tt *tts = NULL;
|
|
|
|
UHUBHIST_FUNC(); UHUBHIST_CALLED();
|
|
|
|
sc->sc_dev = self;
|
|
sc->sc_hub = dev;
|
|
sc->sc_proto = uaa->uaa_proto;
|
|
|
|
devinfop = usbd_devinfo_alloc(dev, 1);
|
|
aprint_naive("\n");
|
|
aprint_normal(": %s\n", devinfop);
|
|
usbd_devinfo_free(devinfop);
|
|
|
|
if (dev->ud_depth > 0 && UHUB_IS_HIGH_SPEED(sc)) {
|
|
aprint_normal_dev(self, "%s transaction translator%s\n",
|
|
UHUB_IS_SINGLE_TT(sc) ? "single" : "multiple",
|
|
UHUB_IS_SINGLE_TT(sc) ? "" : "s");
|
|
}
|
|
|
|
err = usbd_set_config_index(dev, 0, 1);
|
|
if (err) {
|
|
DPRINTF("configuration failed, sc %#jx error %jd",
|
|
(uintptr_t)sc, err, 0, 0);
|
|
return;
|
|
}
|
|
|
|
if (dev->ud_depth > USB_HUB_MAX_DEPTH) {
|
|
aprint_error_dev(self,
|
|
"hub depth (%d) exceeded, hub ignored\n",
|
|
USB_HUB_MAX_DEPTH);
|
|
return;
|
|
}
|
|
|
|
/* Get hub descriptor. */
|
|
memset(&hubdesc, 0, sizeof(hubdesc));
|
|
err = usbd_get_hub_desc(dev, &hubdesc, dev->ud_speed);
|
|
nports = hubdesc.bNbrPorts;
|
|
if (err) {
|
|
DPRINTF("getting hub descriptor failed, uhub%jd error %jd",
|
|
device_unit(self), err, 0, 0);
|
|
return;
|
|
}
|
|
|
|
for (nremov = 0, port = 1; port <= nports; port++)
|
|
if (!UHD_NOT_REMOV(&hubdesc, port))
|
|
nremov++;
|
|
aprint_verbose_dev(self, "%d port%s with %d removable, %s powered\n",
|
|
nports, nports != 1 ? "s" : "", nremov,
|
|
dev->ud_selfpowered ? "self" : "bus");
|
|
|
|
if (nports == 0) {
|
|
aprint_debug_dev(self, "no ports, hub ignored\n");
|
|
goto bad;
|
|
}
|
|
|
|
hub = kmem_alloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port),
|
|
KM_SLEEP);
|
|
dev->ud_hub = hub;
|
|
dev->ud_hub->uh_hubsoftc = sc;
|
|
hub->uh_explore = uhub_explore;
|
|
hub->uh_hubdesc = hubdesc;
|
|
|
|
if (USB_IS_SS(dev->ud_speed) && dev->ud_depth != 0) {
|
|
aprint_debug_dev(self, "setting hub depth %u\n",
|
|
dev->ud_depth - 1);
|
|
err = usbd_set_hub_depth(dev, dev->ud_depth - 1);
|
|
if (err) {
|
|
aprint_error_dev(self, "can't set depth\n");
|
|
goto bad;
|
|
}
|
|
}
|
|
|
|
/* Set up interrupt pipe. */
|
|
err = usbd_device2interface_handle(dev, 0, &iface);
|
|
if (err) {
|
|
aprint_error_dev(self, "no interface handle\n");
|
|
goto bad;
|
|
}
|
|
|
|
if (UHUB_IS_HIGH_SPEED(sc) && !UHUB_IS_SINGLE_TT(sc)) {
|
|
err = usbd_set_interface(iface, 1);
|
|
if (err)
|
|
aprint_error_dev(self, "can't enable multiple TTs\n");
|
|
}
|
|
|
|
ed = usbd_interface2endpoint_descriptor(iface, 0);
|
|
if (ed == NULL) {
|
|
aprint_error_dev(self, "no endpoint descriptor\n");
|
|
goto bad;
|
|
}
|
|
if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
|
|
aprint_error_dev(self, "bad interrupt endpoint\n");
|
|
goto bad;
|
|
}
|
|
|
|
sc->sc_statuslen = (nports + 1 + 7) / 8;
|
|
sc->sc_statusbuf = kmem_alloc(sc->sc_statuslen, KM_SLEEP);
|
|
sc->sc_statuspend = kmem_zalloc(sc->sc_statuslen, KM_SLEEP);
|
|
sc->sc_status = kmem_alloc(sc->sc_statuslen, KM_SLEEP);
|
|
mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB);
|
|
memset(sc->sc_statuspend, 0, sc->sc_statuslen);
|
|
|
|
/* force initial scan */
|
|
memset(sc->sc_status, 0xff, sc->sc_statuslen);
|
|
sc->sc_explorepending = 1;
|
|
|
|
err = usbd_open_pipe_intr(iface, ed->bEndpointAddress,
|
|
USBD_SHORT_XFER_OK|USBD_MPSAFE, &sc->sc_ipipe, sc,
|
|
sc->sc_statusbuf, sc->sc_statuslen,
|
|
uhub_intr, USBD_DEFAULT_INTERVAL);
|
|
if (err) {
|
|
aprint_error_dev(self, "cannot open interrupt pipe\n");
|
|
goto bad;
|
|
}
|
|
|
|
/* Wait with power off for a while. */
|
|
usbd_delay_ms(dev, USB_POWER_DOWN_TIME);
|
|
|
|
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, sc->sc_dev);
|
|
|
|
/*
|
|
* To have the best chance of success we do things in the exact same
|
|
* order as Windows 98. This should not be necessary, but some
|
|
* devices do not follow the USB specs to the letter.
|
|
*
|
|
* These are the events on the bus when a hub is attached:
|
|
* Get device and config descriptors (see attach code)
|
|
* Get hub descriptor (see above)
|
|
* For all ports
|
|
* turn on power
|
|
* wait for power to become stable
|
|
* (all below happens in explore code)
|
|
* For all ports
|
|
* clear C_PORT_CONNECTION
|
|
* For all ports
|
|
* get port status
|
|
* if device connected
|
|
* wait 100 ms
|
|
* turn on reset
|
|
* wait
|
|
* clear C_PORT_RESET
|
|
* get port status
|
|
* proceed with device attachment
|
|
*/
|
|
|
|
if (UHUB_IS_HIGH_SPEED(sc) && nports > 0) {
|
|
tts = kmem_alloc((UHUB_IS_SINGLE_TT(sc) ? 1 : nports) *
|
|
sizeof(struct usbd_tt), KM_SLEEP);
|
|
}
|
|
/* Set up data structures */
|
|
for (p = 0; p < nports; p++) {
|
|
struct usbd_port *up = &hub->uh_ports[p];
|
|
up->up_dev = NULL;
|
|
up->up_parent = dev;
|
|
up->up_portno = p + 1;
|
|
if (dev->ud_selfpowered)
|
|
/* Self powered hub, give ports maximum current. */
|
|
up->up_power = USB_MAX_POWER;
|
|
else
|
|
up->up_power = USB_MIN_POWER;
|
|
up->up_restartcnt = 0;
|
|
up->up_reattach = 0;
|
|
if (UHUB_IS_HIGH_SPEED(sc)) {
|
|
up->up_tt = &tts[UHUB_IS_SINGLE_TT(sc) ? 0 : p];
|
|
up->up_tt->utt_hub = hub;
|
|
} else {
|
|
up->up_tt = NULL;
|
|
}
|
|
}
|
|
|
|
/* XXX should check for none, individual, or ganged power? */
|
|
|
|
pwrdly = dev->ud_hub->uh_hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR
|
|
+ USB_EXTRA_POWER_UP_TIME;
|
|
for (port = 1; port <= nports; port++) {
|
|
/* Turn the power on. */
|
|
err = usbd_set_port_feature(dev, port, UHF_PORT_POWER);
|
|
if (err)
|
|
aprint_error_dev(self, "port %d power on failed, %s\n",
|
|
port, usbd_errstr(err));
|
|
DPRINTF("uhub%jd turn on port %jd power", device_unit(self),
|
|
port, 0, 0);
|
|
}
|
|
|
|
/* Wait for stable power if we are not a root hub */
|
|
if (dev->ud_powersrc->up_parent != NULL)
|
|
usbd_delay_ms(dev, pwrdly);
|
|
|
|
/* The usual exploration will finish the setup. */
|
|
|
|
sc->sc_running = 1;
|
|
|
|
if (!pmf_device_register(self, NULL, NULL))
|
|
aprint_error_dev(self, "couldn't establish power handler\n");
|
|
|
|
return;
|
|
|
|
bad:
|
|
if (sc->sc_status)
|
|
kmem_free(sc->sc_status, sc->sc_statuslen);
|
|
if (sc->sc_statuspend)
|
|
kmem_free(sc->sc_statuspend, sc->sc_statuslen);
|
|
if (sc->sc_statusbuf)
|
|
kmem_free(sc->sc_statusbuf, sc->sc_statuslen);
|
|
if (hub)
|
|
kmem_free(hub,
|
|
sizeof(*hub) + (nports-1) * sizeof(struct usbd_port));
|
|
dev->ud_hub = NULL;
|
|
return;
|
|
}
|
|
|
|
usbd_status
|
|
uhub_explore(struct usbd_device *dev)
|
|
{
|
|
usb_hub_descriptor_t *hd = &dev->ud_hub->uh_hubdesc;
|
|
struct uhub_softc *sc = dev->ud_hub->uh_hubsoftc;
|
|
struct usbd_port *up;
|
|
usbd_status err;
|
|
int speed;
|
|
int port;
|
|
int change, status, reconnect;
|
|
|
|
UHUBHIST_FUNC(); UHUBHIST_CALLED();
|
|
|
|
DPRINTFN(10, "uhub%jd dev=%#jx addr=%jd speed=%ju",
|
|
device_unit(sc->sc_dev), (uintptr_t)dev, dev->ud_addr,
|
|
dev->ud_speed);
|
|
|
|
if (!sc->sc_running)
|
|
return USBD_NOT_STARTED;
|
|
|
|
/* Ignore hubs that are too deep. */
|
|
if (dev->ud_depth > USB_HUB_MAX_DEPTH)
|
|
return USBD_TOO_DEEP;
|
|
|
|
if (PORTSTAT_ISSET(sc, 0)) { /* hub status change */
|
|
usb_hub_status_t hs;
|
|
|
|
err = usbd_get_hub_status(dev, &hs);
|
|
if (err) {
|
|
DPRINTF("uhub%jd get hub status failed, err %jd",
|
|
device_unit(sc->sc_dev), err, 0, 0);
|
|
} else {
|
|
/* just acknowledge */
|
|
status = UGETW(hs.wHubStatus);
|
|
change = UGETW(hs.wHubChange);
|
|
DPRINTF("uhub%jd s/c=%jx/%jx", device_unit(sc->sc_dev),
|
|
status, change, 0);
|
|
|
|
if (change & UHS_LOCAL_POWER)
|
|
usbd_clear_hub_feature(dev,
|
|
UHF_C_HUB_LOCAL_POWER);
|
|
if (change & UHS_OVER_CURRENT)
|
|
usbd_clear_hub_feature(dev,
|
|
UHF_C_HUB_OVER_CURRENT);
|
|
}
|
|
}
|
|
|
|
for (port = 1; port <= hd->bNbrPorts; port++) {
|
|
up = &dev->ud_hub->uh_ports[port - 1];
|
|
|
|
/* reattach is needed after firmware upload */
|
|
reconnect = up->up_reattach;
|
|
up->up_reattach = 0;
|
|
|
|
status = change = 0;
|
|
|
|
/* don't check if no change summary notification */
|
|
if (PORTSTAT_ISSET(sc, port) || reconnect) {
|
|
err = usbd_get_port_status(dev, port, &up->up_status);
|
|
if (err) {
|
|
DPRINTF("uhub%jd get port stat failed, err %jd",
|
|
device_unit(sc->sc_dev), err, 0, 0);
|
|
continue;
|
|
}
|
|
status = UGETW(up->up_status.wPortStatus);
|
|
change = UGETW(up->up_status.wPortChange);
|
|
|
|
DPRINTF("uhub%jd port %jd: s/c=%jx/%jx",
|
|
device_unit(sc->sc_dev), port, status, change);
|
|
}
|
|
if (!change && !reconnect) {
|
|
/* No status change, just do recursive explore. */
|
|
if (up->up_dev != NULL && up->up_dev->ud_hub != NULL)
|
|
up->up_dev->ud_hub->uh_explore(up->up_dev);
|
|
continue;
|
|
}
|
|
|
|
if (change & UPS_C_PORT_ENABLED) {
|
|
DPRINTF("uhub%jd port %jd C_PORT_ENABLED",
|
|
device_unit(sc->sc_dev), port, 0, 0);
|
|
usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);
|
|
if (change & UPS_C_CONNECT_STATUS) {
|
|
/* Ignore the port error if the device
|
|
vanished. */
|
|
} else if (status & UPS_PORT_ENABLED) {
|
|
aprint_error_dev(sc->sc_dev,
|
|
"illegal enable change, port %d\n", port);
|
|
} else {
|
|
/* Port error condition. */
|
|
if (up->up_restartcnt) /* no message first time */
|
|
aprint_error_dev(sc->sc_dev,
|
|
"port error, restarting port %d\n",
|
|
port);
|
|
|
|
if (up->up_restartcnt++ < USBD_RESTART_MAX)
|
|
goto disco;
|
|
else
|
|
aprint_error_dev(sc->sc_dev,
|
|
"port error, giving up port %d\n",
|
|
port);
|
|
}
|
|
}
|
|
if (change & UPS_C_PORT_RESET) {
|
|
/*
|
|
* some xHCs set PortResetChange instead of CSC
|
|
* when port is reset.
|
|
*/
|
|
if ((status & UPS_CURRENT_CONNECT_STATUS) != 0) {
|
|
change |= UPS_C_CONNECT_STATUS;
|
|
}
|
|
usbd_clear_port_feature(dev, port, UHF_C_PORT_RESET);
|
|
}
|
|
if (change & UPS_C_BH_PORT_RESET) {
|
|
/*
|
|
* some xHCs set WarmResetChange instead of CSC
|
|
* when port is reset.
|
|
*/
|
|
if ((status & UPS_CURRENT_CONNECT_STATUS) != 0) {
|
|
change |= UPS_C_CONNECT_STATUS;
|
|
}
|
|
usbd_clear_port_feature(dev, port,
|
|
UHF_C_BH_PORT_RESET);
|
|
}
|
|
if (change & UPS_C_PORT_LINK_STATE)
|
|
usbd_clear_port_feature(dev, port,
|
|
UHF_C_PORT_LINK_STATE);
|
|
if (change & UPS_C_PORT_CONFIG_ERROR)
|
|
usbd_clear_port_feature(dev, port,
|
|
UHF_C_PORT_CONFIG_ERROR);
|
|
|
|
/* XXX handle overcurrent and resume events! */
|
|
|
|
if (!reconnect && !(change & UPS_C_CONNECT_STATUS)) {
|
|
/* No status change, just do recursive explore. */
|
|
if (up->up_dev != NULL && up->up_dev->ud_hub != NULL)
|
|
up->up_dev->ud_hub->uh_explore(up->up_dev);
|
|
continue;
|
|
}
|
|
|
|
/* We have a connect status change, handle it. */
|
|
|
|
DPRINTF("uhub%jd status change port %jd",
|
|
device_unit(sc->sc_dev), port, 0, 0);
|
|
usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION);
|
|
/*
|
|
* If there is already a device on the port the change status
|
|
* must mean that is has disconnected. Looking at the
|
|
* current connect status is not enough to figure this out
|
|
* since a new unit may have been connected before we handle
|
|
* the disconnect.
|
|
*/
|
|
disco:
|
|
if (up->up_dev != NULL) {
|
|
/* Disconnected */
|
|
DPRINTF("uhub%jd device addr=%jd disappeared on "
|
|
"port %jd",
|
|
device_unit(sc->sc_dev), up->up_dev->ud_addr, port,
|
|
0);
|
|
|
|
usb_disconnect_port(up, sc->sc_dev, DETACH_FORCE);
|
|
usbd_clear_port_feature(dev, port,
|
|
UHF_C_PORT_CONNECTION);
|
|
}
|
|
if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
|
|
/* Nothing connected, just ignore it. */
|
|
DPRINTFN(3, "uhub%jd port %jd !CURRENT_CONNECT_STATUS",
|
|
device_unit(sc->sc_dev), port, 0, 0);
|
|
usb_disconnect_port(up, sc->sc_dev, DETACH_FORCE);
|
|
usbd_clear_port_feature(dev, port,
|
|
UHF_C_PORT_CONNECTION);
|
|
continue;
|
|
}
|
|
|
|
/* Connected */
|
|
DPRINTF("unit %jd dev->speed=%ju dev->depth=%ju",
|
|
device_unit(sc->sc_dev), dev->ud_speed, dev->ud_depth, 0);
|
|
|
|
/* Wait for maximum device power up time. */
|
|
usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY);
|
|
|
|
/* Reset port, which implies enabling it. */
|
|
if (usbd_reset_port(dev, port, &up->up_status)) {
|
|
aprint_error_dev(sc->sc_dev,
|
|
"port %d reset failed\n", port);
|
|
continue;
|
|
}
|
|
#if 0
|
|
/* Get port status again, it might have changed during reset */
|
|
err = usbd_get_port_status(dev, port, &up->up_status);
|
|
if (err) {
|
|
DPRINTF("uhub%jd port %jd get port status failed, "
|
|
"err %jd", device_unit(sc->sc_dev), port, err, 0);
|
|
continue;
|
|
}
|
|
#endif
|
|
/*
|
|
* Use the port status from the reset to check for the device
|
|
* disappearing, the port enable status, and the port speed
|
|
*/
|
|
status = UGETW(up->up_status.wPortStatus);
|
|
change = UGETW(up->up_status.wPortChange);
|
|
DPRINTF("uhub%jd port %jd after reset: s/c=%jx/%jx",
|
|
device_unit(sc->sc_dev), port, status, change);
|
|
|
|
if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
|
|
/* Nothing connected, just ignore it. */
|
|
#ifdef DIAGNOSTIC
|
|
aprint_debug_dev(sc->sc_dev,
|
|
"port %d, device disappeared after reset\n", port);
|
|
#endif
|
|
continue;
|
|
}
|
|
if (!(status & UPS_PORT_ENABLED)) {
|
|
/* Not allowed send/receive packet. */
|
|
#ifdef DIAGNOSTIC
|
|
printf("%s: port %d, device not enabled\n",
|
|
device_xname(sc->sc_dev), port);
|
|
#endif
|
|
continue;
|
|
}
|
|
/* port reset may cause Warm Reset Change, drop it. */
|
|
if (change & UPS_C_BH_PORT_RESET)
|
|
usbd_clear_port_feature(dev, port,
|
|
UHF_C_BH_PORT_RESET);
|
|
|
|
/*
|
|
* Figure out device speed from power bit of port status.
|
|
* USB 2.0 ch 11.24.2.7.1
|
|
* USB 3.1 ch 10.16.2.6.1
|
|
*/
|
|
int sts = status;
|
|
if ((sts & UPS_PORT_POWER) == 0)
|
|
sts &= ~UPS_PORT_POWER_SS;
|
|
|
|
if (sts & UPS_HIGH_SPEED)
|
|
speed = USB_SPEED_HIGH;
|
|
else if (sts & UPS_LOW_SPEED)
|
|
speed = USB_SPEED_LOW;
|
|
else {
|
|
/*
|
|
* If there is no power bit set, it is certainly
|
|
* a Super Speed device, so use the speed of its
|
|
* parent hub.
|
|
*/
|
|
if (sts & UPS_PORT_POWER)
|
|
speed = USB_SPEED_FULL;
|
|
else
|
|
speed = dev->ud_speed;
|
|
}
|
|
|
|
/*
|
|
* Reduce the speed, otherwise we won't setup the proper
|
|
* transfer methods.
|
|
*/
|
|
if (speed > dev->ud_speed)
|
|
speed = dev->ud_speed;
|
|
|
|
DPRINTF("uhub%jd speed %ju", device_unit(sc->sc_dev), speed, 0,
|
|
0);
|
|
|
|
/*
|
|
* To check whether port has power,
|
|
* check UPS_PORT_POWER_SS bit if port speed is SS, and
|
|
* check UPS_PORT_POWER bit if port speed is HS/FS/LS.
|
|
*/
|
|
if (USB_IS_SS(speed)) {
|
|
/* SS hub port */
|
|
if (!(status & UPS_PORT_POWER_SS))
|
|
aprint_normal_dev(sc->sc_dev,
|
|
"strange, connected port %d has no power\n",
|
|
port);
|
|
} else {
|
|
/* HS/FS/LS hub port */
|
|
if (!(status & UPS_PORT_POWER))
|
|
aprint_normal_dev(sc->sc_dev,
|
|
"strange, connected port %d has no power\n",
|
|
port);
|
|
}
|
|
|
|
/* Get device info and set its address. */
|
|
err = usbd_new_device(sc->sc_dev, dev->ud_bus,
|
|
dev->ud_depth + 1, speed, port, up);
|
|
/* XXX retry a few times? */
|
|
if (err) {
|
|
DPRINTF("usbd_new_device failed, error %jd", err, 0, 0,
|
|
0);
|
|
/* Avoid addressing problems by disabling. */
|
|
/* usbd_reset_port(dev, port, &up->status); */
|
|
|
|
/*
|
|
* The unit refused to accept a new address, or had
|
|
* some other serious problem. Since we cannot leave
|
|
* at 0 we have to disable the port instead.
|
|
*/
|
|
aprint_error_dev(sc->sc_dev,
|
|
"device problem, disabling port %d\n", port);
|
|
usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE);
|
|
} else {
|
|
/* The port set up succeeded, reset error count. */
|
|
up->up_restartcnt = 0;
|
|
|
|
if (up->up_dev->ud_hub)
|
|
up->up_dev->ud_hub->uh_explore(up->up_dev);
|
|
}
|
|
}
|
|
mutex_enter(&sc->sc_lock);
|
|
sc->sc_explorepending = 0;
|
|
for (int i = 0; i < sc->sc_statuslen; i++) {
|
|
if (sc->sc_statuspend[i] != 0) {
|
|
memcpy(sc->sc_status, sc->sc_statuspend,
|
|
sc->sc_statuslen);
|
|
memset(sc->sc_statuspend, 0, sc->sc_statuslen);
|
|
usb_needs_explore(sc->sc_hub);
|
|
break;
|
|
}
|
|
}
|
|
mutex_exit(&sc->sc_lock);
|
|
|
|
return USBD_NORMAL_COMPLETION;
|
|
}
|
|
|
|
/*
|
|
* Called from process context when the hub is gone.
|
|
* Detach all devices on active ports.
|
|
*/
|
|
int
|
|
uhub_detach(device_t self, int flags)
|
|
{
|
|
struct uhub_softc *sc = device_private(self);
|
|
struct usbd_hub *hub = sc->sc_hub->ud_hub;
|
|
struct usbd_port *rup;
|
|
int nports, port, rc;
|
|
|
|
UHUBHIST_FUNC(); UHUBHIST_CALLED();
|
|
|
|
DPRINTF("uhub%jd flags=%jd", device_unit(self), flags, 0, 0);
|
|
|
|
if (hub == NULL) /* Must be partially working */
|
|
return 0;
|
|
|
|
/* XXXSMP usb */
|
|
KERNEL_LOCK(1, curlwp);
|
|
|
|
nports = hub->uh_hubdesc.bNbrPorts;
|
|
for (port = 0; port < nports; port++) {
|
|
rup = &hub->uh_ports[port];
|
|
if (rup->up_dev == NULL)
|
|
continue;
|
|
if ((rc = usb_disconnect_port(rup, self, flags)) != 0) {
|
|
/* XXXSMP usb */
|
|
KERNEL_UNLOCK_ONE(curlwp);
|
|
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
pmf_device_deregister(self);
|
|
usbd_abort_pipe(sc->sc_ipipe);
|
|
usbd_close_pipe(sc->sc_ipipe);
|
|
|
|
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub, sc->sc_dev);
|
|
|
|
if (hub->uh_ports[0].up_tt)
|
|
kmem_free(hub->uh_ports[0].up_tt,
|
|
(UHUB_IS_SINGLE_TT(sc) ? 1 : nports) *
|
|
sizeof(struct usbd_tt));
|
|
kmem_free(hub,
|
|
sizeof(*hub) + (nports-1) * sizeof(struct usbd_port));
|
|
sc->sc_hub->ud_hub = NULL;
|
|
if (sc->sc_status)
|
|
kmem_free(sc->sc_status, sc->sc_statuslen);
|
|
if (sc->sc_statuspend)
|
|
kmem_free(sc->sc_statuspend, sc->sc_statuslen);
|
|
if (sc->sc_statusbuf)
|
|
kmem_free(sc->sc_statusbuf, sc->sc_statuslen);
|
|
|
|
mutex_destroy(&sc->sc_lock);
|
|
|
|
/* XXXSMP usb */
|
|
KERNEL_UNLOCK_ONE(curlwp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
uhub_rescan(device_t self, const char *ifattr, const int *locators)
|
|
{
|
|
struct uhub_softc *sc = device_private(self);
|
|
struct usbd_hub *hub = sc->sc_hub->ud_hub;
|
|
struct usbd_device *dev;
|
|
int port;
|
|
|
|
for (port = 0; port < hub->uh_hubdesc.bNbrPorts; port++) {
|
|
dev = hub->uh_ports[port].up_dev;
|
|
if (dev == NULL)
|
|
continue;
|
|
usbd_reattach_device(sc->sc_dev, dev, port, locators);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Called when a device has been detached from it */
|
|
void
|
|
uhub_childdet(device_t self, device_t child)
|
|
{
|
|
struct uhub_softc *sc = device_private(self);
|
|
struct usbd_device *devhub = sc->sc_hub;
|
|
struct usbd_device *dev;
|
|
int nports;
|
|
int port;
|
|
int i;
|
|
|
|
if (!devhub->ud_hub)
|
|
/* should never happen; children are only created after init */
|
|
panic("hub not fully initialised, but child deleted?");
|
|
|
|
nports = devhub->ud_hub->uh_hubdesc.bNbrPorts;
|
|
for (port = 0; port < nports; port++) {
|
|
dev = devhub->ud_hub->uh_ports[port].up_dev;
|
|
if (!dev || dev->ud_subdevlen == 0)
|
|
continue;
|
|
for (i = 0; i < dev->ud_subdevlen; i++) {
|
|
if (dev->ud_subdevs[i] == child) {
|
|
dev->ud_subdevs[i] = NULL;
|
|
dev->ud_nifaces_claimed--;
|
|
}
|
|
}
|
|
if (dev->ud_nifaces_claimed == 0) {
|
|
kmem_free(dev->ud_subdevs,
|
|
dev->ud_subdevlen * sizeof(device_t));
|
|
dev->ud_subdevs = NULL;
|
|
dev->ud_subdevlen = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Hub interrupt.
|
|
* This an indication that some port has changed status.
|
|
* Notify the bus event handler thread that we need
|
|
* to be explored again.
|
|
*/
|
|
void
|
|
uhub_intr(struct usbd_xfer *xfer, void *addr, usbd_status status)
|
|
{
|
|
struct uhub_softc *sc = addr;
|
|
|
|
UHUBHIST_FUNC(); UHUBHIST_CALLED();
|
|
|
|
DPRINTFN(5, "uhub%jd", device_unit(sc->sc_dev), 0, 0, 0);
|
|
|
|
if (status == USBD_STALLED)
|
|
usbd_clear_endpoint_stall_async(sc->sc_ipipe);
|
|
else if (status == USBD_NORMAL_COMPLETION) {
|
|
|
|
mutex_enter(&sc->sc_lock);
|
|
|
|
DPRINTFN(5, "uhub%jd: explore pending %jd",
|
|
device_unit(sc->sc_dev), sc->sc_explorepending, 0, 0);
|
|
|
|
/* merge port bitmap into pending interrupts list */
|
|
for (size_t i = 0; i < sc->sc_statuslen; i++) {
|
|
sc->sc_statuspend[i] |= sc->sc_statusbuf[i];
|
|
|
|
DPRINTFN(5, "uhub%jd: pending/new ports "
|
|
"[%jd] %#jx/%#jx", device_unit(sc->sc_dev),
|
|
i, sc->sc_statuspend[i], sc->sc_statusbuf[i]);
|
|
}
|
|
|
|
if (!sc->sc_explorepending) {
|
|
sc->sc_explorepending = 1;
|
|
|
|
memcpy(sc->sc_status, sc->sc_statuspend,
|
|
sc->sc_statuslen);
|
|
memset(sc->sc_statuspend, 0, sc->sc_statuslen);
|
|
|
|
for (size_t i = 0; i < sc->sc_statuslen; i++) {
|
|
DPRINTFN(5, "uhub%jd: exploring ports "
|
|
"[%jd] %#jx", device_unit(sc->sc_dev),
|
|
i, sc->sc_status[i], 0);
|
|
}
|
|
|
|
usb_needs_explore(sc->sc_hub);
|
|
}
|
|
mutex_exit(&sc->sc_lock);
|
|
}
|
|
}
|