On Sun, 3 Oct 2010, tlinder wrote:
> From: Tatyana Linder <tlinder@xxxxxxxxxxxxxx>
>
> This patch adds the SuperSpeed functionality to the gadget framework.
> In order not to force all the FDs to supply SuperSpeed descriptors when
> operating in SuperSpeed mode the following approach was taken:
> If we're operating in SuperSpeed mode and the FD didn't supply SuperSpeed
> descriptors, the composite layer will automatically create SuperSpeed
> descriptors with default values.
> Support for new SuperSpeed BOS descriptor was added.
> Support for SET_FEATURE and GET_STATUS requests in SuperSpeed mode was
> added.
...
> diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
> index da2ed77..69e528a 100644
> --- a/include/linux/usb/ch9.h
> +++ b/include/linux/usb/ch9.h
> @@ -125,6 +125,20 @@
>
> #define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */
>
> +/**
> + * New Feature Selectors as added by USB 3.0
> + * See USB 3.0 spec Table 9-6
> + */
> +#define USB_DEVICE_U1_ENABLE 48 /*enables the upstream port to
> + initiate requests for transition
> + into U1 state*/
> +#define USB_DEVICE_U2_ENABLE 49 /*enables the upstream port to
> + initiate requests for transition
> + into U2 state*/
> +#define USB_DEVICE_LTM_ENABLE 50 /*enables the devise to send
> + Latency tolerance messages.*/
> +#define USB_INTRF_FUNC_SUSPEND 0 /*function suspend*/
> +
Since these are device and interface features, they belong before the
endpoint feature above, not after it.
> +/*SuperSpeed USB Capability descriptor: Defines the set of SuperSpeed USB
> + specific device level capabilities*/
> +#define SS_USB_CAP_TYPE 3
This should be USB_SS_CAP_TYPE.
> +struct ss_usb_cap_descriptor { /* Link Power Management */
> + __u8 bLength;
> + __u8 bDescriptorType;
> + __u8 bDevCapabilityType;
> + __u8 bmAttributes;
> +#define USB_LTM_SUPPORT (1 << 1) /* supports LTM */
> + __u16 wSpeedSupported;
> +#define USB_LOW_SPEED_OPERATION (1) /* Low speed operation */
> +#define USB_FULL_SPEED_OPERATION (1 << 1) /* Full speed operation */
> +#define USB_HIGH_SPEED_OPERATION (1 << 2) /* High speed operation */
> +#define USB_5GBPS_OPERATION (1 << 3) /* Operation at 5Gbps */
> + __u8 bFunctionalitySupport;
> + __u8 bU1devExitLat;
> + __u16 bU2DevExitLat;
> +} __attribute__((packed));
Similarly, this should usb_ss_cap_descriptor (by analogy with
usb_otg_descriptor or usb_wireless_cap_descriptor).
> +#define USB_DT_SS_USB_CAP_SIZE 10
> +
> +/*Container ID Capability descriptor: Defines the instance unique ID used to
> + identify the instance across all operating modes*/
> +#define CONTAINER_ID_TYPE 4
> +struct ss_usb_container_id_descriptor {
> + __u8 bLength;
> + __u8 bDescriptorType;
> + __u8 bDevCapabilityType;
> + __u8 bReserved;
> + __u8 ContainerID[16]; /*128-bit number*/
> +} __attribute__((packed));
> +
> +#define USB_DT_SS_CONTN_ID_SIZE 20
And this should be usb_ss_container_id_descriptor.
Alan Stern
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