diff options
Diffstat (limited to 'include/pci.h')
| -rw-r--r-- | include/pci.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/pci.h b/include/pci.h index 68548b00d9..db84744571 100644 --- a/include/pci.h +++ b/include/pci.h @@ -1027,6 +1027,21 @@ int pci_bus_write_config(struct udevice *bus, pci_dev_t bdf, int offset, unsigned long value, enum pci_size_t size); /** + * pci_bus_clrset_config32() - Update a configuration value for a device + * + * The register at @offset is updated to (oldvalue & ~clr) | set. + * + * @bus: Bus to access + * @bdf: PCI device address: bus, device and function -see PCI_BDF() + * @offset: Register offset to update + * @clr: Bits to clear + * @set: Bits to set + * @return 0 if OK, -ve on error + */ +int pci_bus_clrset_config32(struct udevice *bus, pci_dev_t bdf, int offset, + u32 clr, u32 set); + +/** * Driver model PCI config access functions. Use these in preference to others * when you have a valid device */ @@ -1044,6 +1059,14 @@ int dm_pci_write_config8(struct udevice *dev, int offset, u8 value); int dm_pci_write_config16(struct udevice *dev, int offset, u16 value); int dm_pci_write_config32(struct udevice *dev, int offset, u32 value); +/** + * These permit convenient read/modify/write on PCI configuration. The + * register is updated to (oldvalue & ~clr) | set. + */ +int dm_pci_clrset_config8(struct udevice *dev, int offset, u32 clr, u32 set); +int dm_pci_clrset_config16(struct udevice *dev, int offset, u32 clr, u32 set); +int dm_pci_clrset_config32(struct udevice *dev, int offset, u32 clr, u32 set); + /* * The following functions provide access to the above without needing the * size parameter. We are trying to encourage the use of the 8/16/32-style |