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[Qemu-devel] [PATCH 8/8] uhci: fixes for save/load-vm
From: |
Max Krasnyansky |
Subject: |
[Qemu-devel] [PATCH 8/8] uhci: fixes for save/load-vm |
Date: |
Fri, 15 Aug 2008 00:51:50 +0000 |
For some reason we were not registering save/load-vm handler for piix3
flavor of UHCI and hence save/load was broken.
Async transactions need to be canceled when we save the VM because there
is no way we can save/restore all that state. Since we do not mess the
original TD/QH the driver will simply resubmit the transfers.
Tested with Windows XP-SP2 running under QEMU/KQEMU.
Signed-off-by: Max Krasnyansky <address@hidden>
---
hw/usb-uhci.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c
index c6e7751..1b15074 100644
--- a/hw/usb-uhci.c
+++ b/hw/usb-uhci.c
@@ -310,6 +310,8 @@ static void uhci_reset(UHCIState *s)
int i;
UHCIPort *port;
+ dprintf("uhci: full reset\n");
+
pci_conf = s->dev.config;
pci_conf[0x6a] = 0x01; /* usb clock */
@@ -331,13 +333,14 @@ static void uhci_reset(UHCIState *s)
uhci_async_cancel_all(s);
}
-#if 1
static void uhci_save(QEMUFile *f, void *opaque)
{
UHCIState *s = opaque;
uint8_t num_ports = NB_PORTS;
int i;
+ uhci_async_cancel_all(s);
+
pci_device_save(&s->dev, f);
qemu_put_8s(f, &num_ports);
@@ -383,7 +386,6 @@ static int uhci_load(QEMUFile *f, void *opaque, int
version_id)
return 0;
}
-#endif
static void uhci_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
{
@@ -1009,6 +1011,8 @@ static void uhci_frame_timer(void *opaque)
qemu_del_timer(s->frame_timer);
/* set hchalted bit in status - UHCI11D 2.1.2 */
s->status |= UHCI_STS_HCHALTED;
+
+ dprintf("uhci: halted\n");
return;
}
@@ -1082,6 +1086,8 @@ void usb_uhci_piix3_init(PCIBus *bus, int devfn)
to rely on this. */
pci_register_io_region(&s->dev, 4, 0x20,
PCI_ADDRESS_SPACE_IO, uhci_map);
+
+ register_savevm("uhci", 0, 1, uhci_save, uhci_load, s);
}
void usb_uhci_piix4_init(PCIBus *bus, int devfn)
--
1.5.5.1
- [Qemu-devel] [PATCH 0/8] Various USB fixes and improvements (update 2), Max Krasnyansky, 2008/08/14
- [Qemu-devel] [PATCH 1/8] husb: support for USB host device auto disconnect., Max Krasnyansky, 2008/08/14
- [Qemu-devel] [PATCH 2/8] husb: support for USB host device auto connect., Max Krasnyansky, 2008/08/14
- [Qemu-devel] [PATCH 3/8] usb: generic packet handler cleanup and documentation, Max Krasnyansky, 2008/08/14
- [Qemu-devel] [PATCH 5/8] husb: rewrite Linux host USB layer, fully async operation, Max Krasnyansky, 2008/08/14
- [Qemu-devel] [PATCH 4/8] uhci: rewrite UHCI emulator, fully async operation with multiple outstanding transactions, Max Krasnyansky, 2008/08/14
- [Qemu-devel] [PATCH 7/8] husb: Fixup printfs and stuff based on the review comments, Max Krasnyansky, 2008/08/14
- [Qemu-devel] [PATCH 8/8] uhci: fixes for save/load-vm,
Max Krasnyansky <=
- [Qemu-devel] [PATCH 6/8] husb: remove disconnect detection timer, Max Krasnyansky, 2008/08/14
- [Qemu-devel] Re: [PATCH 0/8] Various USB fixes and improvements (update 2), Anthony Liguori, 2008/08/18
- [Qemu-devel] Re: [PATCH 0/8] Various USB fixes and improvements (update 2), Anthony Liguori, 2008/08/21