diff options
Diffstat (limited to 'hw/pci.c')
| -rw-r--r-- | hw/pci.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/hw/pci.c b/hw/pci.c index bf7db0db79..b95c79440c 100644 --- a/hw/pci.c +++ b/hw/pci.c @@ -381,6 +381,7 @@ void pci_default_write_config(PCIDevice *d, case 0x0b: case 0x0e: case 0x10 ... 0x27: /* base */ + case 0x2c ... 0x2f: /* read-only subsystem ID & vendor ID */ case 0x30 ... 0x33: /* rom */ case 0x3d: can_write = 0; @@ -402,6 +403,7 @@ void pci_default_write_config(PCIDevice *d, case 0x0a: case 0x0b: case 0x0e: + case 0x2c ... 0x2f: /* read-only subsystem ID & vendor ID */ case 0x38 ... 0x3b: /* rom */ case 0x3d: can_write = 0; @@ -413,6 +415,15 @@ void pci_default_write_config(PCIDevice *d, break; } if (can_write) { + /* Mask out writes to reserved bits in registers */ + switch (addr) { + case 0x06: + val &= ~PCI_STATUS_RESERVED_MASK_LO; + break; + case 0x07: + val &= ~PCI_STATUS_RESERVED_MASK_HI; + break; + } d->config[addr] = val; } if (++addr > 0xff) |