diff options
| author | Ian Moffett <ian@osmora.org> | 2025-10-11 19:54:48 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-10-11 19:54:48 -0400 |
| commit | ec64baba95195e4e124e4c9112fd286677f6fce5 (patch) | |
| tree | 2c96719a857563de0398b14da855a1beff5f2d31 /src/sys/include | |
| parent | 0552d8126be3f2ea9f03098afb5cb77049c8d606 (diff) | |
kern: usb: Extract HCSPARAMS1 register fields
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'src/sys/include')
| -rw-r--r-- | src/sys/include/io/usb/xhciregs.h | 9 | ||||
| -rw-r--r-- | src/sys/include/io/usb/xhcivar.h | 6 |
2 files changed, 15 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) \ diff --git a/src/sys/include/io/usb/xhcivar.h b/src/sys/include/io/usb/xhcivar.h index c0b3a39..bc5f59b 100644 --- a/src/sys/include/io/usb/xhcivar.h +++ b/src/sys/include/io/usb/xhcivar.h @@ -37,9 +37,15 @@ * Represents the host controller * * @io: I/O space + * @max_slots: Max device slots + * @max_intrs: Max interrupters + * @max_ports: Max ports */ struct xhci_hcd { struct xhci_capregs *capspace; + uint8_t max_slots; + uint32_t max_intrs; + uint32_t max_ports; }; #define XHCI_TIMEOUT_MSEC 500 |