On Thu, Oct 07, 2010 at 08:34:28PM +0200, Brokhman Tatyana wrote:
> Adding SuperSpeed usb definitions as defined by ch9 of the USB3.0 spec.
> This patch is a preparation for adding SuperSpeed support to the gadget
> framework.
>
> Signed-off-by: Brokhman Tatyana <[email protected]>
Is this still a [RFC] or is it something that you think should be
applied to the tree?
> ---
> include/linux/usb/ch9.h | 58
> ++++++++++++++++++++++++++++++++++++++++++++++-
> 1 files changed, 57 insertions(+), 1 deletions(-)
>
> diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
> index da2ed77..a779b86 100644
> --- a/include/linux/usb/ch9.h
> +++ b/include/linux/usb/ch9.h
> @@ -123,8 +123,23 @@
> #define USB_DEVICE_A_ALT_HNP_SUPPORT 5 /* (otg) other RH port does */
> #define USB_DEVICE_DEBUG_MODE 6 /* (special devices
> only) */
>
> +/*
> + * New Feature Selectors as added by USB 3.0
> + * See USB 3.0 spec Table 9-6
> + */
> +#define USB_DEVICE_U1_ENABLE 48 /* dev may initiate U1 transition */
> +#define USB_DEVICE_U2_ENABLE 49 /* dev may initiate U2 transition*/
> +#define USB_DEVICE_LTM_ENABLE 50 /* dev may send LTM*/
> +#define USB_INTRF_FUNC_SUSPEND 0 /* function suspend*/
> +
> +#define USB_INTR_FUNC_SUSPEND_OPT_MASK 0xFF00
> +
> #define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */
>
> +/* Bit array elements as returned by the USB_REQ_GET_STATUS request. */
> +#define USB_DEV_STAT_U1_ENABLED 2 /* transition into U1
> state */
> +#define USB_DEV_STAT_U2_ENABLED 3 /* transition into U2
> state */
> +#define USB_DEV_STAT_LTM_ENABLED 4 /* Latency tolerance messages*/
>
> /**
> * struct usb_ctrlrequest - SETUP data for a USB device control request
> @@ -675,6 +690,7 @@ struct usb_bos_descriptor {
> __u8 bNumDeviceCaps;
> } __attribute__((packed));
>
> +#define USB_DT_BOS_SIZE 5
> /*-------------------------------------------------------------------------*/
>
> /* USB_DT_DEVICE_CAPABILITY: grouped with BOS */
> @@ -712,16 +728,56 @@ struct usb_wireless_cap_descriptor { /* Ultra Wide
> Band */
> __u8 bReserved;
> } __attribute__((packed));
>
> +/* USB 2.0 Extension descriptor */
> #define USB_CAP_TYPE_EXT 2
>
> struct usb_ext_cap_descriptor { /* Link Power Management */
> __u8 bLength;
> __u8 bDescriptorType;
> __u8 bDevCapabilityType;
> - __u8 bmAttributes;
> + __u32 bmAttributes;
> #define USB_LPM_SUPPORT (1 << 1) /* supports LPM
> */
> } __attribute__((packed));
This structure just got bigger? How is that going to affect existing
users of it? And shoudn't that be in __le32 format instead of __u32?
>
> +#define USB_DT_USB_EXT_CAP_SIZE 7
> +
> +/*
> + * SuperSpeed USB Capability descriptor: Defines the set of SuperSpeed USB
> + * specific device level capabilities
> + */
> +#define USB_SS_CAP_TYPE 3
> +struct usb_ss_cap_descriptor { /* Link Power Management */
> + __u8 bLength;
> + __u8 bDescriptorType;
> + __u8 bDevCapabilityType;
> + __u8 bmAttributes;
> +#define USB_LTM_SUPPORT (1 << 1) /* supports LTM */
> + __u16 wSpeedSupported;
__le16?
> +#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;
__le16? I'm guessing these fields haven't actually been used for
anything?
> +} __attribute__((packed));
> +
> +#define USB_DT_USB_SS_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 usb_ss_container_id_descriptor {
> + __u8 bLength;
> + __u8 bDescriptorType;
> + __u8 bDevCapabilityType;
> + __u8 bReserved;
> + __u8 ContainerID[16]; /* 128-bit number */
Is this number in any specific endian format? If so, you're going to
have a hard time handling it as an array of bytes, aren't you? How is
this going to be managed?
thanks,
greg k-h
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