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d20db4b4e9
Base on inputs from Alan Stern, split the hub.h header into: - new ch11.h header (most of it) containing constants and structures from chapter 11 of the USB 2.0 spec. - a small remaining part being merged into hcd.h. Signed-of-by: Eric Lescouet <eric@lescouet.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
173 lines
4.6 KiB
C
173 lines
4.6 KiB
C
/*
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* This file holds Hub protocol constants and data structures that are
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* defined in chapter 11 (Hub Specification) of the USB 2.0 specification.
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*
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* It is used/shared between the USB core, the HCDs and couple of other USB
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* drivers.
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*/
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#ifndef __LINUX_HUB_H
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#define __LINUX_HUB_H
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#include <linux/list.h>
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#include <linux/workqueue.h>
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#include <linux/compiler.h> /* likely()/unlikely() */
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/*
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* Hub request types
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*/
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#define USB_RT_HUB (USB_TYPE_CLASS | USB_RECIP_DEVICE)
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#define USB_RT_PORT (USB_TYPE_CLASS | USB_RECIP_OTHER)
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/*
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* Hub class requests
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* See USB 2.0 spec Table 11-16
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*/
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#define HUB_CLEAR_TT_BUFFER 8
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#define HUB_RESET_TT 9
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#define HUB_GET_TT_STATE 10
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#define HUB_STOP_TT 11
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/*
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* Hub Class feature numbers
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* See USB 2.0 spec Table 11-17
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*/
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#define C_HUB_LOCAL_POWER 0
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#define C_HUB_OVER_CURRENT 1
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/*
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* Port feature numbers
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* See USB 2.0 spec Table 11-17
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*/
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#define USB_PORT_FEAT_CONNECTION 0
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#define USB_PORT_FEAT_ENABLE 1
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#define USB_PORT_FEAT_SUSPEND 2 /* L2 suspend */
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#define USB_PORT_FEAT_OVER_CURRENT 3
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#define USB_PORT_FEAT_RESET 4
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#define USB_PORT_FEAT_L1 5 /* L1 suspend */
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#define USB_PORT_FEAT_POWER 8
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#define USB_PORT_FEAT_LOWSPEED 9
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/* This value was never in Table 11-17 */
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#define USB_PORT_FEAT_HIGHSPEED 10
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/* This value is also fake */
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#define USB_PORT_FEAT_SUPERSPEED 11
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#define USB_PORT_FEAT_C_CONNECTION 16
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#define USB_PORT_FEAT_C_ENABLE 17
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#define USB_PORT_FEAT_C_SUSPEND 18
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#define USB_PORT_FEAT_C_OVER_CURRENT 19
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#define USB_PORT_FEAT_C_RESET 20
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#define USB_PORT_FEAT_TEST 21
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#define USB_PORT_FEAT_INDICATOR 22
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#define USB_PORT_FEAT_C_PORT_L1 23
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/*
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* Hub Status and Hub Change results
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* See USB 2.0 spec Table 11-19 and Table 11-20
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*/
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struct usb_port_status {
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__le16 wPortStatus;
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__le16 wPortChange;
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} __attribute__ ((packed));
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/*
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* wPortStatus bit field
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* See USB 2.0 spec Table 11-21
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*/
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#define USB_PORT_STAT_CONNECTION 0x0001
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#define USB_PORT_STAT_ENABLE 0x0002
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#define USB_PORT_STAT_SUSPEND 0x0004
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#define USB_PORT_STAT_OVERCURRENT 0x0008
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#define USB_PORT_STAT_RESET 0x0010
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#define USB_PORT_STAT_L1 0x0020
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/* bits 6 to 7 are reserved */
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#define USB_PORT_STAT_POWER 0x0100
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#define USB_PORT_STAT_LOW_SPEED 0x0200
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#define USB_PORT_STAT_HIGH_SPEED 0x0400
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#define USB_PORT_STAT_TEST 0x0800
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#define USB_PORT_STAT_INDICATOR 0x1000
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/* bits 13 to 15 are reserved */
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/*
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* wPortChange bit field
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* See USB 2.0 spec Table 11-22
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* Bits 0 to 4 shown, bits 5 to 15 are reserved
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*/
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#define USB_PORT_STAT_C_CONNECTION 0x0001
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#define USB_PORT_STAT_C_ENABLE 0x0002
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#define USB_PORT_STAT_C_SUSPEND 0x0004
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#define USB_PORT_STAT_C_OVERCURRENT 0x0008
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#define USB_PORT_STAT_C_RESET 0x0010
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#define USB_PORT_STAT_C_L1 0x0020
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/*
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* wHubCharacteristics (masks)
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* See USB 2.0 spec Table 11-13, offset 3
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*/
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#define HUB_CHAR_LPSM 0x0003 /* D1 .. D0 */
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#define HUB_CHAR_COMPOUND 0x0004 /* D2 */
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#define HUB_CHAR_OCPM 0x0018 /* D4 .. D3 */
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#define HUB_CHAR_TTTT 0x0060 /* D6 .. D5 */
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#define HUB_CHAR_PORTIND 0x0080 /* D7 */
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struct usb_hub_status {
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__le16 wHubStatus;
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__le16 wHubChange;
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} __attribute__ ((packed));
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/*
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* Hub Status & Hub Change bit masks
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* See USB 2.0 spec Table 11-19 and Table 11-20
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* Bits 0 and 1 for wHubStatus and wHubChange
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* Bits 2 to 15 are reserved for both
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*/
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#define HUB_STATUS_LOCAL_POWER 0x0001
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#define HUB_STATUS_OVERCURRENT 0x0002
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#define HUB_CHANGE_LOCAL_POWER 0x0001
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#define HUB_CHANGE_OVERCURRENT 0x0002
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/*
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* Hub descriptor
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* See USB 2.0 spec Table 11-13
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*/
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#define USB_DT_HUB (USB_TYPE_CLASS | 0x09)
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#define USB_DT_HUB_NONVAR_SIZE 7
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struct usb_hub_descriptor {
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__u8 bDescLength;
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__u8 bDescriptorType;
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__u8 bNbrPorts;
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__le16 wHubCharacteristics;
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__u8 bPwrOn2PwrGood;
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__u8 bHubContrCurrent;
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/* add 1 bit for hub status change; round to bytes */
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__u8 DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8];
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__u8 PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8];
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} __attribute__ ((packed));
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/* port indicator status selectors, tables 11-7 and 11-25 */
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#define HUB_LED_AUTO 0
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#define HUB_LED_AMBER 1
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#define HUB_LED_GREEN 2
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#define HUB_LED_OFF 3
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enum hub_led_mode {
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INDICATOR_AUTO = 0,
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INDICATOR_CYCLE,
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/* software blinks for attention: software, hardware, reserved */
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INDICATOR_GREEN_BLINK, INDICATOR_GREEN_BLINK_OFF,
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INDICATOR_AMBER_BLINK, INDICATOR_AMBER_BLINK_OFF,
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INDICATOR_ALT_BLINK, INDICATOR_ALT_BLINK_OFF
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} __attribute__ ((packed));
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/* Transaction Translator Think Times, in bits */
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#define HUB_TTTT_8_BITS 0x00
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#define HUB_TTTT_16_BITS 0x20
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#define HUB_TTTT_24_BITS 0x40
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#define HUB_TTTT_32_BITS 0x60
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#endif /* __LINUX_HUB_H */
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