diff options
Diffstat (limited to 'src/northbridge/amd/amdk8/misc_control.c')
| -rw-r--r-- | src/northbridge/amd/amdk8/misc_control.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/northbridge/amd/amdk8/misc_control.c b/src/northbridge/amd/amdk8/misc_control.c new file mode 100644 index 0000000000..639e34fbaf --- /dev/null +++ b/src/northbridge/amd/amdk8/misc_control.c @@ -0,0 +1,37 @@ +/* Turn off machine check triggers when reading + * pci space where there are no devices. + * This is necessary when scaning the bus for + * devices which is done by the kernel */ + +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> + +static void misc_control_init(struct device *dev) +{ + uint32_t cmd; + + printk_debug("NB: Function 3 Misc Control.. "); + cmd = pci_read_config32(dev, 0x44); + cmd |= (1<<6) | (1<<25); + pci_write_config32(dev, 0x44, cmd ); + + printk_debug("done.\n"); +} + +static struct device_operations mcf3_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = misc_control_init, + .scan_bus = 0, +}; + +static struct pci_driver mcf3_driver __pci_driver = { + .ops = &mcf3_ops, + .vendor = PCI_VENDOR_ID_AMD, + .device = 0x1103, +}; + |