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qemu: make cirrus init value pci spec compliant

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PCI memory should be disabled at reset, otherwise
we might claim transactions at address 0.
I/O should also be disabled, although for cirrus
it is harmless to enable it as we do not
have I/O bar.

Note: bios fix needed for this patch to work
was already applied:
previously bios incorrently assumed that it does not
need to enable i/o unless device has i/o bar.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Michael S. Tsirkin 2009-11-30 21:02:26 +02:00 committed by Anthony Liguori
parent 40ff6d7e8d
commit f74ab486d5
1 changed files with 0 additions and 1 deletions
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1
hw/cirrus_vga.c
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@ -3231,7 +3231,6 @@ static int pci_cirrus_vga_initfn(PCIDevice *dev)
/* setup PCI */
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_CIRRUS);
pci_config_set_device_id(pci_conf, device_id);
pci_conf[0x04] = PCI_COMMAND_IOACCESS | PCI_COMMAND_MEMACCESS;
pci_config_set_class(pci_conf, PCI_CLASS_DISPLAY_VGA);
pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL;