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usb: Add SSPlus device capability descriptor

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Add the SuperSpeedPlus USB Device Capability descriptor and its field
macros.

Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D57203
This commit is contained in:
ShengYi Hung committed 2026-11-02 14:02:11 +11:00
1 parent 2f79adc289
commit 23ef0bdb48
1 file changed
+28
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sys/dev/usb/usb.h
+28
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@@ -331,6 +331,7 @@ struct usb_bos_cap_descriptor {
#define USB_DEVCAP_USB2EXT 0x02
#define USB_DEVCAP_SUPER_SPEED 0x03
#define USB_DEVCAP_CONTAINER_ID 0x04
#define USB_DEVCAP_SUPERSPEED_PLUS 0x0A
/* data ... */
} __packed;
typedef struct usb_bos_cap_descriptor usb_bos_cap_descriptor_t;
@@ -371,6 +372,33 @@ struct usb_devcap_container_id_descriptor {
typedef struct usb_devcap_container_id_descriptor
usb_devcap_container_id_descriptor_t;
struct usb_devcap_ss_plus_descriptor_header {
uByte bLength;
uByte bDescriptorType;
uByte bDevCapabilityType;
uByte bReserved;
#define USB_DEVCAP_SSPLUS_SSAC_GET(x) ((x) & 0x1F)
#define USB_DEVCAP_SSPLUS_SSAC_SET(v) ((v) & 0x1F)
#define USB_DEVCAP_SSPLUS_SSIC_SET(v) (((v) & 0x0F) << 5)
uDWord bmAttributes;
uWord wFunctionalitySupport;
uWord wReserved;
} __packed;
struct usb_devcap_ss_plus_descriptor {
struct usb_devcap_ss_plus_descriptor_header hdr;
#define USB_DEVCAP_SSPLUS_SSID_GET(x) ((x) & 0x0F)
#define USB_DEVCAP_SSPLUS_LSE_GET(x) (((x) >> 4) & 0x03)
#define USB_DEVCAP_SSPLUS_ST_GET(x) (((x) >> 6) & 0x03)
#define USB_DEVCAP_SSPLUS_LP_GET(x) (((x) >> 14) & 0x03)
#define USB_DEVCAP_SSPLUS_LP_SS 0
#define USB_DEVCAP_SSPLUS_LP_SSP 1
#define USB_DEVCAP_SSPLUS_LSM_GET(x) (((x) >> 16) & 0xFFFF)
uDWord bmSublinkSpeedAttr[];
} __packed;
typedef struct usb_devcap_ss_plus_descriptor
usb_devcap_ss_plus_descriptor_t;
/* Device class codes */
#define UDCLASS_IN_INTERFACE 0x00
#define UDCLASS_COMM 0x02