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[Qemu-devel] [PATCH 2/3] qemu: make cirrus init value pci spec compliant


From: Michael S. Tsirkin
Subject: [Qemu-devel] [PATCH 2/3] qemu: make cirrus init value pci spec compliant
Date: Thu, 8 Oct 2009 16:52:41 +0200
User-agent: Mutt/1.5.19 (2009-01-05)

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: need bios fix for this patch to work:
currently pc-bios incorrently assumes that it does not
need to enable i/o unless device has i/o bar.

Signed-off-by: Michael S. Tsirkin <address@hidden>
---
 hw/cirrus_vga.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c
index 1feb827..c54ac65 100644
--- a/hw/cirrus_vga.c
+++ b/hw/cirrus_vga.c
@@ -3248,7 +3248,6 @@ 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;
 
-- 
1.6.5.rc2





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