diff options
Diffstat (limited to 'src/sys/include/io/usb/xhciregs.h')
| -rw-r--r-- | src/sys/include/io/usb/xhciregs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/sys/include/io/usb/xhciregs.h b/src/sys/include/io/usb/xhciregs.h index 85a8630..726d883 100644 --- a/src/sys/include/io/usb/xhciregs.h +++ b/src/sys/include/io/usb/xhciregs.h @@ -85,6 +85,15 @@ struct __packed xhci_opregs { #define USBSTS_CNR BIT(11) /* Controller not ready */ /* + * USB structural parameters 1 register bits + * + * See section 5.3.3 of the xHCI spec + */ +#define HCSPARAMS1_MAXSLOTS(HCSPARAMS1) ((HCSPARAMS1) & 0xFF) +#define HCSPARAMS1_MAXINTRS(HCSPARAMS1) (((HCSPARAMS1) >> 8) & 0x7FF) +#define HCSPARAMS1_MAXPORTS(HCSPARAMS1) (((HCSPARAMS1) >> 24) & 0xFF) + +/* * Macros to get various register spaces */ #define XHCI_OPBASE(CAPBASE) \ |