motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 00:03:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

pci: implement bridge filtering

Browse source 
Support bridge filtering on top of the memory
API as suggested by Avi Kivity:

Create a memory region for the bridge's address space.  This region is
not directly added to system_memory or its descendants.  Devices under
the bridge see this region as its pci_address_space().  The region is
as large as the entire address space - it does not take into account
any windows.

For each of the three windows (pref, non-pref, vga), create an alias
with the appropriate start and size.  Map the alias into the bridge's
parent's pci_address_space(), as subregions.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2011-09-04 16:50:55 +03:00
parent 778d179939
commit 7df32ca08a
4 changed files with 91 additions and 76 deletions
Download patch file Download diff file Expand all files Collapse all files

2
hw/pci.h
View file

@ -90,7 +90,6 @@ typedef struct PCIIORegion {
pcibus_t addr; /* current PCI mapping address. -1 means not mapped */
#define PCI_BAR_UNMAPPED (~(pcibus_t)0)
pcibus_t size;
pcibus_t filtered_size;
uint8_t type;
MemoryRegion *memory;
MemoryRegion *address_space;
@ -273,7 +272,6 @@ int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp,
void do_pci_info_print(Monitor *mon, const QObject *data);
void do_pci_info(Monitor *mon, QObject **ret_data);
void pci_bridge_update_mappings(PCIBus *b);
void pci_device_deassert_intx(PCIDevice *dev);