Add HPET emulation to qemu (Beth Kon)

This patch adds HPET emulation.  It can be disabled with -disable-hpet.  An hpet
provides a more finely granular clocksource than otherwise available on PC.
This means that latency-dependent applications (e.g. multimedia) will generally
be smoother when using the HPET.

Signed-off-by: Beth Kon <eak@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6081 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 3 insertions, 0 deletions

diff --git a/hw/pc.h b/hw/pc.h
index b0b8970..8433084 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -97,6 +97,9 @@ i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
 void piix4_smbus_register_device(SMBusDevice *dev, uint8_t addr);
 void acpi_bios_init(void);
 
+/* hpet.c */
+extern int no_hpet;
+
 /* pcspk.c */
 void pcspk_init(PITState *);
 int pcspk_audio_init(AudioState *, qemu_irq *pic);