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From e29585889b3c33b370bf09c58cb4a0f4b3fae482 Mon Sep 17 00:00:00 2001
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From: Marcel Apfelbaum <marcel.a@redhat.com>
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Date: Wed, 18 Dec 2013 20:05:26 +0100
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Subject: [PATCH 10/16] ehci: implement port wakeup
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RH-Author: Marcel Apfelbaum <marcel.a@redhat.com>
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Message-id: <1387397126-27754-1-git-send-email-marcel.a@redhat.com>
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Patchwork-id: 56377
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O-Subject: [RHEL-7 qemu-kvm PATCH v2] ehci: implement port wakeup
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Bugzilla: 1039513
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RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
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RH-Acked-by: Gerd Hoffmann <kraxel@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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From: Gerd Hoffmann <kraxel@redhat.com>
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Update portsc register and raise irq in case a suspended
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port is woken up, so remote wakeup works on our ehci ports.
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bugzilla: #1039513 ASSIGNED - Gerd Hoffmann - backport remote wakeup for ehci
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brew: http://brewweb.devel.redhat.com/brew/taskinfo?taskID=6755209
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
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(cherry picked from commit e489df40caa96d895d9672d77f536f23c9e42f94)
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Conflicts:
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trace-events
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---
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v1->v2:
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Rebased the patch. Minor conflicts.
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hw/usb/hcd-ehci.c | 18 ++++++++++++++++--
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trace-events | 3 +++
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2 files changed, 19 insertions(+), 2 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/usb/hcd-ehci.c | 18 ++++++++++++++++--
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trace-events | 3 +++
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2 files changed, 19 insertions(+), 2 deletions(-)
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diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
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index 0d3799d..02d2ab7 100644
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--- a/hw/usb/hcd-ehci.c
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+++ b/hw/usb/hcd-ehci.c
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@@ -826,9 +826,9 @@ static void ehci_child_detach(USBPort *port, USBDevice *child)
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static void ehci_wakeup(USBPort *port)
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{
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EHCIState *s = port->opaque;
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- uint32_t portsc = s->portsc[port->index];
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+ uint32_t *portsc = &s->portsc[port->index];
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- if (portsc & PORTSC_POWNER) {
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+ if (*portsc & PORTSC_POWNER) {
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USBPort *companion = s->companion_ports[port->index];
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if (companion->ops->wakeup) {
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companion->ops->wakeup(companion);
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@@ -836,6 +836,12 @@ static void ehci_wakeup(USBPort *port)
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return;
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}
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+ if (*portsc & PORTSC_SUSPEND) {
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+ trace_usb_ehci_port_wakeup(port->index);
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+ *portsc |= PORTSC_FPRES;
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+ ehci_raise_irq(s, USBSTS_PCD);
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+ }
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+
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qemu_bh_schedule(s->async_bh);
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}
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@@ -1067,6 +1073,14 @@ static void ehci_port_write(void *ptr, hwaddr addr,
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}
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}
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+ if ((val & PORTSC_SUSPEND) && !(*portsc & PORTSC_SUSPEND)) {
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+ trace_usb_ehci_port_suspend(port);
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+ }
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+ if (!(val & PORTSC_FPRES) && (*portsc & PORTSC_FPRES)) {
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+ trace_usb_ehci_port_resume(port);
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+ val &= ~PORTSC_SUSPEND;
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+ }
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+
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*portsc &= ~PORTSC_RO_MASK;
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*portsc |= val;
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trace_usb_ehci_portsc_change(addr + PORTSC_BEGIN, addr >> 2, *portsc, old);
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diff --git a/trace-events b/trace-events
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index e9ee94f..dbbd25d 100644
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--- a/trace-events
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+++ b/trace-events
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@@ -303,6 +303,9 @@ usb_ehci_sitd(uint32_t addr, uint32_t nxt, uint32_t active) "ITD @ %08x: next %0
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usb_ehci_port_attach(uint32_t port, const char *owner, const char *device) "attach port #%d, owner %s, device %s"
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usb_ehci_port_detach(uint32_t port, const char *owner) "detach port #%d, owner %s"
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usb_ehci_port_reset(uint32_t port, int enable) "reset port #%d - %d"
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+usb_ehci_port_suspend(uint32_t port) "port #%d"
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+usb_ehci_port_wakeup(uint32_t port) "port #%d"
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+usb_ehci_port_resume(uint32_t port) "port #%d"
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usb_ehci_queue_action(void *q, const char *action) "q %p: %s"
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usb_ehci_packet_action(void *q, void *p, const char *action) "q %p p %p: %s"
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usb_ehci_irq(uint32_t level, uint32_t frindex, uint32_t sts, uint32_t mask) "level %d, frindex 0x%04x, sts 0x%x, mask 0x%x"
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--
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1.7.1
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