diff options
Diffstat (limited to 'dev/pcidev.cc')
| -rw-r--r-- | dev/pcidev.cc | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/dev/pcidev.cc b/dev/pcidev.cc index f2bce33ca..93200a8c7 100644 --- a/dev/pcidev.cc +++ b/dev/pcidev.cc @@ -138,7 +138,13 @@ PciDev::WriteConfig(int offset, int size, uint32_t data) case PCI_LATENCY_TIMER: *(uint8_t *)&config.data[offset] = htoa(byte_value); break; - + /* Do nothing for these read-only registers */ + case PCI0_INTERRUPT_PIN: + case PCI0_MINIMUM_GRANT: + case PCI0_MAXIMUM_LATENCY: + case PCI_CLASS_CODE: + case PCI_REVISION_ID: + break; default: panic("writing to a read only register"); } @@ -192,7 +198,7 @@ PciDev::WriteConfig(int offset, int size, uint32_t data) htoa((word_value & ~0x3) | (htoa(config.data[offset]) & 0x3)); - if (word_value & ~0x1) { + if (word_value != 0x1) { Addr base_addr = (word_value & ~0x1) + TSUNAMI_PCI0_IO; Addr base_size = BARSize[barnum]; |