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usb: bugfixes for xen-usb and ehci, mingw build fix. 

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Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20160803-1' into staging

usb: bugfixes for xen-usb and ehci, mingw build fix.

# gpg: Signature made Wed 03 Aug 2016 14:04:26 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/pull-usb-20160803-1:
  xen: use a common function for pv and hvm guest backend register calls
  xen: drain submit queue in xen-usb before removing device
  xen: when removing a backend don't remove many of them
  ehci: faster frame index calculation for skipped frames
  wxx: Fix compilation of host-libusb.c
  wxx: Fix compiler warning for host-libusb.c

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2016-08-03 14:25:09 +01:00
parent 0cb34ff32e 0e39bb022b
commit 6eac5f7bad
7 changed files with 117 additions and 102 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
hw/usb/hcd-ehci.c
View File

@ -2206,29 +2206,28 @@ static void ehci_advance_periodic_state(EHCIState *ehci)
static void ehci_update_frindex(EHCIState *ehci, int uframes)
{
int i;
if (!ehci_enabled(ehci) && ehci->pstate == EST_INACTIVE) {
return;
}
for (i = 0; i < uframes; i++) {
ehci->frindex++;
/* Generate FLR interrupt if frame index rolls over 0x2000 */
if ((ehci->frindex % 0x2000) + uframes >= 0x2000) {
ehci_raise_irq(ehci, USBSTS_FLR);
}
if (ehci->frindex == 0x00002000) {
ehci_raise_irq(ehci, USBSTS_FLR);
}
if (ehci->frindex == 0x00004000) {
ehci_raise_irq(ehci, USBSTS_FLR);
ehci->frindex = 0;
if (ehci->usbsts_frindex >= 0x00004000) {
ehci->usbsts_frindex -= 0x00004000;
} else {
ehci->usbsts_frindex = 0;
}
/* How many times will frindex roll over 0x4000 with this frame count?
* usbsts_frindex is decremented by 0x4000 on rollover until it reaches 0
*/
int rollovers = (ehci->frindex + uframes) / 0x4000;
if (rollovers > 0) {
if (ehci->usbsts_frindex >= (rollovers * 0x4000)) {
ehci->usbsts_frindex -= 0x4000 * rollovers;
} else {
ehci->usbsts_frindex = 0;
}
}
ehci->frindex = (ehci->frindex + uframes) % 0x4000;
}
static void ehci_frame_timer(void *opaque)

10
hw/usb/host-libusb.c
View File

@ -235,7 +235,7 @@ static int usb_host_init(void)
#ifndef CONFIG_WIN32
const struct libusb_pollfd **poll;
#endif
int i, rc;
int rc;
if (ctx) {
return 0;
@ -253,6 +253,7 @@ static int usb_host_init(void)
ctx);
poll = libusb_get_pollfds(ctx);
if (poll) {
int i;
for (i = 0; poll[i] != NULL; i++) {
usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
}
@ -358,7 +359,7 @@ static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
return NULL;
}
static void usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
static void LIBUSB_CALL usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
{
USBHostRequest *r = xfer->user_data;
USBHostDevice *s = r->host;
@ -391,7 +392,7 @@ out:
}
}
static void usb_host_req_complete_data(struct libusb_transfer *xfer)
static void LIBUSB_CALL usb_host_req_complete_data(struct libusb_transfer *xfer)
{
USBHostRequest *r = xfer->user_data;
USBHostDevice *s = r->host;
@ -447,7 +448,8 @@ static void usb_host_req_abort(USBHostRequest *r)
/* ------------------------------------------------------------------------ */
static void usb_host_req_complete_iso(struct libusb_transfer *transfer)
static void LIBUSB_CALL
usb_host_req_complete_iso(struct libusb_transfer *transfer)
{
USBHostIsoXfer *xfer = transfer->user_data;

94
hw/usb/xen-usb.c
View File

@ -90,6 +90,8 @@ struct usbback_req {
void *buffer;
void *isoc_buffer;
struct libusb_transfer *xfer;
bool cancelled;
};
struct usbback_hotplug {
@ -301,20 +303,23 @@ static void usbback_do_response(struct usbback_req *usbback_req, int32_t status,
usbback_req->isoc_buffer = NULL;
}
res = RING_GET_RESPONSE(&usbif->urb_ring, usbif->urb_ring.rsp_prod_pvt);
res->id = usbback_req->req.id;
res->status = status;
res->actual_length = actual_length;
res->error_count = error_count;
res->start_frame = 0;
usbif->urb_ring.rsp_prod_pvt++;
RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&usbif->urb_ring, notify);
if (usbif->urb_sring) {
res = RING_GET_RESPONSE(&usbif->urb_ring, usbif->urb_ring.rsp_prod_pvt);
res->id = usbback_req->req.id;
res->status = status;
res->actual_length = actual_length;
res->error_count = error_count;
res->start_frame = 0;
usbif->urb_ring.rsp_prod_pvt++;
RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&usbif->urb_ring, notify);
if (notify) {
xen_be_send_notify(xendev);
if (notify) {
xen_be_send_notify(xendev);
}
}
usbback_put_req(usbback_req);
if (!usbback_req->cancelled)
usbback_put_req(usbback_req);
}
static void usbback_do_response_ret(struct usbback_req *usbback_req,
@ -366,15 +371,14 @@ static void usbback_set_address(struct usbback_info *usbif,
}
}
static bool usbback_cancel_req(struct usbback_req *usbback_req)
static void usbback_cancel_req(struct usbback_req *usbback_req)
{
bool ret = false;
if (usb_packet_is_inflight(&usbback_req->packet)) {
usb_cancel_packet(&usbback_req->packet);
ret = true;
QTAILQ_REMOVE(&usbback_req->stub->submit_q, usbback_req, q);
usbback_req->cancelled = true;
usbback_do_response_ret(usbback_req, -EPROTO);
}
return ret;
}
static void usbback_process_unlink_req(struct usbback_req *usbback_req)
@ -391,7 +395,7 @@ static void usbback_process_unlink_req(struct usbback_req *usbback_req)
devnum = usbif_pipedevice(usbback_req->req.pipe);
if (unlikely(devnum == 0)) {
usbback_req->stub = usbif->ports +
usbif_pipeportnum(usbback_req->req.pipe);
usbif_pipeportnum(usbback_req->req.pipe) - 1;
if (unlikely(!usbback_req->stub)) {
ret = -ENODEV;
goto fail_response;
@ -406,9 +410,7 @@ static void usbback_process_unlink_req(struct usbback_req *usbback_req)
QTAILQ_FOREACH(unlink_req, &usbback_req->stub->submit_q, q) {
if (unlink_req->req.id == id) {
if (usbback_cancel_req(unlink_req)) {
usbback_do_response_ret(unlink_req, -EPROTO);
}
usbback_cancel_req(unlink_req);
break;
}
}
@ -681,6 +683,33 @@ static void usbback_hotplug_enq(struct usbback_info *usbif, unsigned port)
usbback_hotplug_notify(usbif);
}
static void usbback_portid_drain(struct usbback_info *usbif, unsigned port)
{
struct usbback_req *req, *tmp;
bool sched = false;
QTAILQ_FOREACH_SAFE(req, &usbif->ports[port - 1].submit_q, q, tmp) {
usbback_cancel_req(req);
sched = true;
}
if (sched) {
qemu_bh_schedule(usbif->bh);
}
}
static void usbback_portid_detach(struct usbback_info *usbif, unsigned port)
{
if (!usbif->ports[port - 1].attached) {
return;
}
usbif->ports[port - 1].speed = USBIF_SPEED_NONE;
usbif->ports[port - 1].attached = false;
usbback_portid_drain(usbif, port);
usbback_hotplug_enq(usbif, port);
}
static void usbback_portid_remove(struct usbback_info *usbif, unsigned port)
{
USBPort *p;
@ -694,9 +723,7 @@ static void usbback_portid_remove(struct usbback_info *usbif, unsigned port)
object_unparent(OBJECT(usbif->ports[port - 1].dev));
usbif->ports[port - 1].dev = NULL;
usbif->ports[port - 1].speed = USBIF_SPEED_NONE;
usbif->ports[port - 1].attached = false;
usbback_hotplug_enq(usbif, port);
usbback_portid_detach(usbif, port);
TR_BUS(&usbif->xendev, "port %d removed\n", port);
}
@ -801,7 +828,6 @@ static void usbback_process_port(struct usbback_info *usbif, unsigned port)
static void usbback_disconnect(struct XenDevice *xendev)
{
struct usbback_info *usbif;
struct usbback_req *req, *tmp;
unsigned int i;
TR_BUS(xendev, "start\n");
@ -820,11 +846,8 @@ static void usbback_disconnect(struct XenDevice *xendev)
}
for (i = 0; i < usbif->num_ports; i++) {
if (!usbif->ports[i].dev) {
continue;
}
QTAILQ_FOREACH_SAFE(req, &usbif->ports[i].submit_q, q, tmp) {
usbback_cancel_req(req);
if (usbif->ports[i].dev) {
usbback_portid_drain(usbif, i + 1);
}
}
@ -944,8 +967,7 @@ static void xen_bus_detach(USBPort *port)
usbif = port->opaque;
TR_BUS(&usbif->xendev, "\n");
usbif->ports[port->index].attached = false;
usbback_hotplug_enq(usbif, port->index + 1);
usbback_portid_detach(usbif, port->index + 1);
}
static void xen_bus_child_detach(USBPort *port, USBDevice *child)
@ -958,9 +980,16 @@ static void xen_bus_child_detach(USBPort *port, USBDevice *child)
static void xen_bus_complete(USBPort *port, USBPacket *packet)
{
struct usbback_req *usbback_req;
struct usbback_info *usbif;
usbif = port->opaque;
usbback_req = container_of(packet, struct usbback_req, packet);
if (usbback_req->cancelled) {
g_free(usbback_req);
return;
}
usbif = usbback_req->usbif;
TR_REQ(&usbif->xendev, "\n");
usbback_packet_complete(packet);
}
@ -1037,6 +1066,7 @@ static int usbback_free(struct XenDevice *xendev)
}
usb_bus_release(&usbif->bus);
object_unparent(OBJECT(&usbif->bus));
TR_BUS(xendev, "finished\n");

72
hw/xen/xen_backend.c
View File

@ -321,48 +321,28 @@ static struct XenDevice *xen_be_get_xendev(const char *type, int dom, int dev,
/*
* release xen backend device.
*/
static struct XenDevice *xen_be_del_xendev(int dom, int dev)
static void xen_be_del_xendev(struct XenDevice *xendev)
{
struct XenDevice *xendev, *xnext;
/*
* This is pretty much like QTAILQ_FOREACH(xendev, &xendevs, next) but
* we save the next pointer in xnext because we might free xendev.
*/
xnext = xendevs.tqh_first;
while (xnext) {
xendev = xnext;
xnext = xendev->next.tqe_next;
if (xendev->dom != dom) {
continue;
}
if (xendev->dev != dev && dev != -1) {
continue;
}
if (xendev->ops->free) {
xendev->ops->free(xendev);
}
if (xendev->fe) {
char token[XEN_BUFSIZE];
snprintf(token, sizeof(token), "fe:%p", xendev);
xs_unwatch(xenstore, xendev->fe, token);
g_free(xendev->fe);
}
if (xendev->evtchndev != NULL) {
xenevtchn_close(xendev->evtchndev);
}
if (xendev->gnttabdev != NULL) {
xengnttab_close(xendev->gnttabdev);
}
QTAILQ_REMOVE(&xendevs, xendev, next);
g_free(xendev);
if (xendev->ops->free) {
xendev->ops->free(xendev);
}
return NULL;
if (xendev->fe) {
char token[XEN_BUFSIZE];
snprintf(token, sizeof(token), "fe:%p", xendev);
xs_unwatch(xenstore, xendev->fe, token);
g_free(xendev->fe);
}
if (xendev->evtchndev != NULL) {
xenevtchn_close(xendev->evtchndev);
}
if (xendev->gnttabdev != NULL) {
xengnttab_close(xendev->gnttabdev);
}
QTAILQ_REMOVE(&xendevs, xendev, next);
g_free(xendev);
}
/*
@ -682,7 +662,7 @@ static void xenstore_update_be(char *watch, char *type, int dom,
if (xendev != NULL) {
bepath = xs_read(xenstore, 0, xendev->be, &len);
if (bepath == NULL) {
xen_be_del_xendev(dom, dev);
xen_be_del_xendev(xendev);
} else {
free(bepath);
xen_be_backend_changed(xendev, path);
@ -800,6 +780,16 @@ int xen_be_register(const char *type, struct XenDevOps *ops)
return xenstore_scan(type, xen_domid, ops);
}
void xen_be_register_common(void)
{
xen_be_register("console", &xen_console_ops);
xen_be_register("vkbd", &xen_kbdmouse_ops);
xen_be_register("qdisk", &xen_blkdev_ops);
#ifdef CONFIG_USB_LIBUSB
xen_be_register("qusb", &xen_usb_ops);
#endif
}
int xen_be_bind_evtchn(struct XenDevice *xendev)
{
if (xendev->local_port != -1) {

7
hw/xenpv/xen_machine_pv.c
View File

@ -67,14 +67,9 @@ static void xen_init_pv(MachineState *machine)
break;
}
xen_be_register("console", &xen_console_ops);
xen_be_register("vkbd", &xen_kbdmouse_ops);
xen_be_register_common();
xen_be_register("vfb", &xen_framebuffer_ops);
xen_be_register("qdisk", &xen_blkdev_ops);
xen_be_register("qnic", &xen_netdev_ops);
#ifdef CONFIG_USB_LIBUSB
xen_be_register("qusb", &xen_usb_ops);
#endif
/* configure framebuffer */
if (xenfb_enabled) {

1
include/hw/xen/xen_backend.h
View File

@ -87,6 +87,7 @@ void xen_be_check_state(struct XenDevice *xendev);
/* xen backend driver bits */
int xen_be_init(void);
void xen_be_register_common(void);
int xen_be_register(const char *type, struct XenDevOps *ops);
int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state);
int xen_be_bind_evtchn(struct XenDevice *xendev);

4
xen-hvm.c
View File

@ -1318,9 +1318,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
error_report("xen backend core setup failed");
goto err;
}
xen_be_register("console", &xen_console_ops);
xen_be_register("vkbd", &xen_kbdmouse_ops);
xen_be_register("qdisk", &xen_blkdev_ops);
xen_be_register_common();
xen_read_physmap(state);
return;