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[pci] Provide PCI_CLASS() to calculate a scalar PCI class value

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Rename PCI_CLASS() (which constructs a struct pci_class_id) to
PCI_CLASS_ID(), and provide PCI_CLASS() as a macro which constructs
the 24-bit scalar value of a PCI class code.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-05-08 14:54:12 +01:00
parent 50e703a534
commit b88ab14ba3
4 changed files with 17 additions and 9 deletions
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16
src/include/ipxe/pci.h
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@@ -118,6 +118,16 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#define PCI_CLASS_SERIAL_USB_EHCI 0x20 /**< ECHI USB controller */
#define PCI_CLASS_SERIAL_USB_XHCI 0x30 /**< xHCI USB controller */
/** Construct PCI class
*
* @v base Base class (or PCI_ANY_ID)
* @v sub Subclass (or PCI_ANY_ID)
* @v progif Programming interface (or PCI_ANY_ID)
*/
#define PCI_CLASS( base, sub, progif ) \
( ( ( (base) & 0xff ) << 16 ) | ( ( (sub) & 0xff ) << 8 ) | \
( ( (progif) & 0xff) << 0 ) )
/** A PCI device ID list entry */
struct pci_device_id {
/** Name */
@@ -147,10 +157,8 @@ struct pci_class_id {
* @v sub Subclass (or PCI_ANY_ID)
* @v progif Programming interface (or PCI_ANY_ID)
*/
#define PCI_CLASS(base,sub,progif) { \
.class = ( ( ( (base) & 0xff ) << 16 ) | \
( ( (sub) & 0xff ) << 8 ) | \
( ( (progif) & 0xff) << 0 ) ), \
#define PCI_CLASS_ID( base, sub, progif ) { \
.class = PCI_CLASS ( base, sub, progif ), \
.mask = ( ( ( ( (base) == PCI_ANY_ID ) ? 0x00 : 0xff ) << 16 ) | \
( ( ( (sub) == PCI_ANY_ID ) ? 0x00 : 0xff ) << 8 ) | \
( ( ( (progif) == PCI_ANY_ID ) ? 0x00 : 0xff ) << 0 ) ), \