diff options
Diffstat (limited to 'include/uapi/linux/usb/ch11.h')
| -rw-r--r-- | include/uapi/linux/usb/ch11.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/uapi/linux/usb/ch11.h b/include/uapi/linux/usb/ch11.h index 7692dc69ccf7..ce4c83f2e66a 100644 --- a/include/uapi/linux/usb/ch11.h +++ b/include/uapi/linux/usb/ch11.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * This file holds Hub protocol constants and data structures that are * defined in chapter 11 (Hub Specification) of the USB 2.0 specification. @@ -11,6 +12,18 @@ #include <linux/types.h> /* __u8 etc */ +/* This is arbitrary. + * From USB 2.0 spec Table 11-13, offset 7, a hub can + * have up to 255 ports. The most yet reported is 10. + * Upcoming hardware might raise that limit. + * Because the arrays need to add a bit for hub status data, we + * use 31, so plus one evens out to four bytes. + */ +#define USB_MAXCHILDREN 31 + +/* See USB 3.1 spec Table 10-5 */ +#define USB_SS_MAXPORTS 15 + /* * Hub request types */ @@ -19,6 +32,14 @@ #define USB_RT_PORT (USB_TYPE_CLASS | USB_RECIP_OTHER) /* + * Port status type for GetPortStatus requests added in USB 3.1 + * See USB 3.1 spec Table 10-12 + */ +#define HUB_PORT_STATUS 0 +#define HUB_PORT_PD_STATUS 1 +#define HUB_EXT_PORT_STATUS 2 + +/* * Hub class requests * See USB 2.0 spec Table 11-16 */ @@ -86,10 +107,13 @@ /* * Hub Status and Hub Change results * See USB 2.0 spec Table 11-19 and Table 11-20 + * USB 3.1 extends the port status request and may return 4 additional bytes. + * See USB 3.1 spec section 10.16.2.6 Table 10-12 and 10-15 */ struct usb_port_status { __le16 wPortStatus; __le16 wPortChange; + __le32 dwExtPortStatus; } __attribute__ ((packed)); /* @@ -162,6 +186,21 @@ struct usb_port_status { #define USB_PORT_STAT_C_CONFIG_ERROR 0x0080 /* + * USB 3.1 dwExtPortStatus field masks + * See USB 3.1 spec 10.16.2.6.3 Table 10-15 + */ + +#define USB_EXT_PORT_STAT_RX_SPEED_ID 0x0000000f +#define USB_EXT_PORT_STAT_TX_SPEED_ID 0x000000f0 +#define USB_EXT_PORT_STAT_RX_LANES 0x00000f00 +#define USB_EXT_PORT_STAT_TX_LANES 0x0000f000 + +#define USB_EXT_PORT_RX_LANES(p) \ + (((p) & USB_EXT_PORT_STAT_RX_LANES) >> 8) +#define USB_EXT_PORT_TX_LANES(p) \ + (((p) & USB_EXT_PORT_STAT_TX_LANES) >> 12) + +/* * wHubCharacteristics (masks) * See USB 2.0 spec Table 11-13, offset 3 */ |