diff options
Diffstat (limited to 'src/northbridge/intel/gm45/iommu.c')
| -rw-r--r-- | src/northbridge/intel/gm45/iommu.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/src/northbridge/intel/gm45/iommu.c b/src/northbridge/intel/gm45/iommu.c index 0d106b8e27..10e0d02066 100644 --- a/src/northbridge/intel/gm45/iommu.c +++ b/src/northbridge/intel/gm45/iommu.c @@ -36,17 +36,16 @@ void init_iommu() const pci_devfn_t igd = PCI_DEV(0, 2, 0); /* setup somewhere */ - u8 cmd = pci_read_config8(igd, PCI_COMMAND); - cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; - pci_write_config8(igd, PCI_COMMAND, cmd); + pci_or_config16(igd, PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); void *bar = (void *)pci_read_config32(igd, PCI_BASE_ADDRESS_0); /* clear GTT, 2MB is enough (and should be safe) */ memset(bar, 0, 2<<20); /* and now disable again */ + u16 cmd = pci_read_config8(igd, PCI_COMMAND); cmd &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); - pci_write_config8(igd, PCI_COMMAND, cmd); + pci_write_config16(igd, PCI_COMMAND, cmd); pci_write_config32(igd, PCI_BASE_ADDRESS_0, 0); } |