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| author | Michael Brown <mcb30@ipxe.org> | 2015-02-02 14:31:18 +0000 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2015-02-02 14:31:18 +0000 |
| commit | 072d656a2fe0b0d89ded610d11257889fc35e0f1 (patch) | |
| tree | 85fae6d01c78dad2ebaeba914eb606bd77de14a4 /src/include/ipxe/pci.h | |
| parent | d38bac05e7d0eb67fc19f3532a6b4fa00804106e (diff) | |
| download | ipxe-072d656a2fe0b0d89ded610d11257889fc35e0f1.zip ipxe-072d656a2fe0b0d89ded610d11257889fc35e0f1.tar.gz ipxe-072d656a2fe0b0d89ded610d11257889fc35e0f1.tar.bz2 | |
[pci] Allow drivers to specify a PCI class
Allow drivers to specify a supported PCI class code. To save space in
the final binary, make this an attribute of the driver rather than an
attribute of a PCI device ID list entry.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include/ipxe/pci.h')
| -rw-r--r-- | src/include/ipxe/pci.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/include/ipxe/pci.h b/src/include/ipxe/pci.h index 692771e..0bd976e 100644 --- a/src/include/ipxe/pci.h +++ b/src/include/ipxe/pci.h @@ -279,6 +279,29 @@ struct pci_device_id { /** Match-anything ID */ #define PCI_ANY_ID 0xffff +/** A PCI class ID */ +struct pci_class_id { + /** Class */ + uint32_t class; + /** Class mask */ + uint32_t mask; +}; + +/** Construct PCI class ID + * + * @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) { \ + .class = ( ( ( (base) & 0xff ) << 16 ) | \ + ( ( (sub) & 0xff ) << 8 ) | \ + ( ( (progif) & 0xff) << 0 ) ), \ + .mask = ( ( ( ( (base) == PCI_ANY_ID ) ? 0x00 : 0xff ) << 16 ) | \ + ( ( ( (sub) == PCI_ANY_ID ) ? 0x00 : 0xff ) << 8 ) | \ + ( ( ( (progif) == PCI_ANY_ID ) ? 0x00 : 0xff ) << 0 ) ), \ + } + /** A PCI device */ struct pci_device { /** Generic device */ @@ -322,6 +345,8 @@ struct pci_driver { struct pci_device_id *ids; /** Number of entries in PCI ID table */ unsigned int id_count; + /** PCI class ID */ + struct pci_class_id class; /** * Probe device * |