diff options
Diffstat (limited to 'arch/x86/cpu/pci.c')
| -rw-r--r-- | arch/x86/cpu/pci.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/cpu/pci.c b/arch/x86/cpu/pci.c index c6218250e1..0ccde194d9 100644 --- a/arch/x86/cpu/pci.c +++ b/arch/x86/cpu/pci.c @@ -16,6 +16,10 @@ #include <asm/io.h> #include <asm/pci.h> +/* + * TODO(sjg@chromium.org): Drop the first parameter from each of these + * functions since it is not used. + */ int pci_x86_read_config(struct udevice *bus, pci_dev_t bdf, uint offset, ulong *valuep, enum pci_size_t size) { @@ -54,6 +58,21 @@ int pci_x86_write_config(struct udevice *bus, pci_dev_t bdf, uint offset, return 0; } +int pci_x86_clrset_config(struct udevice *bus, pci_dev_t bdf, uint offset, + ulong clr, ulong set, enum pci_size_t size) +{ + ulong value; + int ret; + + ret = pci_x86_read_config(bus, bdf, offset, &value, size); + if (ret) + return ret; + value &= ~clr; + value |= set; + + return pci_x86_write_config(bus, bdf, offset, value, size); +} + void pci_assign_irqs(int bus, int device, u8 irq[4]) { pci_dev_t bdf; |