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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2011-07-22 11:05:01 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2011-07-27 10:57:22 +0300 |
| commit | 42e4126b793d15ec40f3a84017e1d8afecda1b6d (patch) | |
| tree | cad2ca961f45dbfca771a370cf8fd95c47cd09ba /hw/pci_host.h | |
| parent | 85dde9a90b9d26273ef531d344b2cdfee9a6683d (diff) | |
| download | qemu-42e4126b793d15ec40f3a84017e1d8afecda1b6d.zip qemu-42e4126b793d15ec40f3a84017e1d8afecda1b6d.tar.gz qemu-42e4126b793d15ec40f3a84017e1d8afecda1b6d.tar.bz2 | |
pci: Common overflow prevention
Introduce pci_config_read/write_common helpers to prevent passing
accesses down the callback chain that go beyond the config space limits.
Adjust length assertions as they are no longer correct (cutting may
generate valid 3 byte accesses).
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/pci_host.h')
| -rw-r--r-- | hw/pci_host.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/pci_host.h b/hw/pci_host.h index 0a58595..c8390ee 100644 --- a/hw/pci_host.h +++ b/hw/pci_host.h @@ -39,6 +39,12 @@ struct PCIHostState { PCIBus *bus; }; +/* common internal helpers for PCI/PCIe hosts, cut off overflows */ +void pci_host_config_write_common(PCIDevice *pci_dev, uint32_t addr, + uint32_t limit, uint32_t val, uint32_t len); +uint32_t pci_host_config_read_common(PCIDevice *pci_dev, uint32_t addr, + uint32_t limit, uint32_t len); + void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len); uint32_t pci_data_read(PCIBus *s, uint32_t addr, int len); |