1 #ifndef __LINUX_HUB_H 2 #define __LINUX_HUB_H 3 4 #include <linux/list.h> 5 #include <linux/compiler.h> /* likely()/unlikely() */ 6 7 /* 8 * Hub request types 9 */ 10 11 #define USB_RT_HUB (USB_TYPE_CLASS | USB_RECIP_DEVICE) 12 #define USB_RT_PORT (USB_TYPE_CLASS | USB_RECIP_OTHER) 13 14 /* 15 * Hub Class feature numbers 16 * See USB 2.0 spec Table 11-17 17 */ 18 #define C_HUB_LOCAL_POWER 0 19 #define C_HUB_OVER_CURRENT 1 20 21 /* 22 * Port feature numbers 23 * See USB 2.0 spec Table 11-17 24 */ 25 #define USB_PORT_FEAT_CONNECTION 0 26 #define USB_PORT_FEAT_ENABLE 1 27 #define USB_PORT_FEAT_SUSPEND 2 28 #define USB_PORT_FEAT_OVER_CURRENT 3 29 #define USB_PORT_FEAT_RESET 4 30 #define USB_PORT_FEAT_POWER 8 31 #define USB_PORT_FEAT_LOWSPEED 9 32 #define USB_PORT_FEAT_HIGHSPEED 10 33 #define USB_PORT_FEAT_C_CONNECTION 16 34 #define USB_PORT_FEAT_C_ENABLE 17 35 #define USB_PORT_FEAT_C_SUSPEND 18 36 #define USB_PORT_FEAT_C_OVER_CURRENT 19 37 #define USB_PORT_FEAT_C_RESET 20 38 #define USB_PORT_FEAT_TEST 21 39 #define USB_PORT_FEAT_INDICATOR 22 40 41 /* 42 * Hub Status and Hub Change results 43 * See USB 2.0 spec Table 11-19 and Table 11-20 44 */ 45 struct usb_port_status { 46 __u16 wPortStatus; 47 __u16 wPortChange; 48 } __attribute__ ((packed)); 49 50 /* 51 * wPortStatus bit field 52 * See USB 2.0 spec Table 11-21 53 */ 54 #define USB_PORT_STAT_CONNECTION 0x0001 55 #define USB_PORT_STAT_ENABLE 0x0002 56 #define USB_PORT_STAT_SUSPEND 0x0004 57 #define USB_PORT_STAT_OVERCURRENT 0x0008 58 #define USB_PORT_STAT_RESET 0x0010 59 /* bits 5 for 7 are reserved */ 60 #define USB_PORT_STAT_POWER 0x0100 61 #define USB_PORT_STAT_LOW_SPEED 0x0200 62 #define USB_PORT_STAT_HIGH_SPEED 0x0400 63 #define USB_PORT_STAT_TEST 0x0800 64 #define USB_PORT_STAT_INDICATOR 0x1000 65 /* bits 13 to 15 are reserved */ 66 67 /* 68 * wPortChange bit field 69 * See USB 2.0 spec Table 11-22 70 * Bits 0 to 4 shown, bits 5 to 15 are reserved 71 */ 72 #define USB_PORT_STAT_C_CONNECTION 0x0001 73 #define USB_PORT_STAT_C_ENABLE 0x0002 74 #define USB_PORT_STAT_C_SUSPEND 0x0004 75 #define USB_PORT_STAT_C_OVERCURRENT 0x0008 76 #define USB_PORT_STAT_C_RESET 0x0010 77 78 /* 79 * wHubCharacteristics (masks) 80 * See USB 2.0 spec Table 11-13, offset 3 81 */ 82 #define HUB_CHAR_LPSM 0x0003 /* D1 .. D0 */ 83 #define HUB_CHAR_COMPOUND 0x0004 /* D2 */ 84 #define HUB_CHAR_OCPM 0x0018 /* D4 .. D3 */ 85 #define HUB_CHAR_TTTT 0x0060 /* D6 .. D5 */ 86 #define HUB_CHAR_PORTIND 0x0080 /* D7 */ 87 88 struct usb_hub_status { 89 __u16 wHubStatus; 90 __u16 wHubChange; 91 } __attribute__ ((packed)); 92 93 /* 94 * Hub Status & Hub Change bit masks 95 * See USB 2.0 spec Table 11-19 and Table 11-20 96 * Bits 0 and 1 for wHubStatus and wHubChange 97 * Bits 2 to 15 are reserved for both 98 */ 99 #define HUB_STATUS_LOCAL_POWER 0x0001 100 #define HUB_STATUS_OVERCURRENT 0x0002 101 #define HUB_CHANGE_LOCAL_POWER 0x0001 102 #define HUB_CHANGE_OVERCURRENT 0x0002 103 104 105 /* 106 * Hub descriptor 107 * See USB 2.0 spec Table 11-13 108 */ 109 struct usb_hub_descriptor { 110 __u8 bDescLength; 111 __u8 bDescriptorType; 112 __u8 bNbrPorts; 113 __u16 wHubCharacteristics; 114 __u8 bPwrOn2PwrGood; 115 __u8 bHubContrCurrent; 116 /* add 1 bit for hub status change; round to bytes */ 117 __u8 DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8]; 118 __u8 PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8]; 119 } __attribute__ ((packed)); 120 121 struct usb_device; 122 123 struct usb_hub { 124 struct usb_device *dev; 125 126 struct urb *urb; /* Interrupt polling pipe */ 127 128 char buffer[(USB_MAXCHILDREN + 1 + 7) / 8]; /* add 1 bit for hub status change */ 129 /* and add 7 bits to round up to byte boundary */ 130 int error; 131 int nerrors; 132 133 struct list_head hub_list; 134 135 struct list_head event_list; 136 137 struct usb_hub_descriptor *descriptor; 138 139 struct semaphore khubd_sem; 140 struct usb_tt tt; /* Transaction Translator */ 141 }; 142 143 #endif /* __LINUX_HUB_H */ 144