[34] | 1 | /* |
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| 2 | * QEMU USB HUB emulation |
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| 3 | * |
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| 4 | * Copyright (c) 2005 Fabrice Bellard |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 7 | * of this software and associated documentation files (the "Software"), to deal |
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| 8 | * in the Software without restriction, including without limitation the rights |
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| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 10 | * copies of the Software, and to permit persons to whom the Software is |
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| 11 | * furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included in |
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| 14 | * all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 22 | * THE SOFTWARE. |
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| 23 | */ |
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| 24 | #include "vl.h" |
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| 25 | |
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| 26 | //#define DEBUG |
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| 27 | |
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| 28 | #define MAX_PORTS 8 |
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| 29 | |
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| 30 | typedef struct USBHubPort { |
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| 31 | USBPort port; |
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| 32 | uint16_t wPortStatus; |
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| 33 | uint16_t wPortChange; |
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| 34 | } USBHubPort; |
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| 35 | |
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| 36 | typedef struct USBHubState { |
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| 37 | USBDevice dev; |
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| 38 | int nb_ports; |
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| 39 | USBHubPort ports[MAX_PORTS]; |
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| 40 | } USBHubState; |
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| 41 | |
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| 42 | #define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE) |
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| 43 | #define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE) |
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| 44 | #define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR) |
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| 45 | #define GetHubStatus (0xa000 | USB_REQ_GET_STATUS) |
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| 46 | #define GetPortStatus (0xa300 | USB_REQ_GET_STATUS) |
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| 47 | #define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE) |
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| 48 | #define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE) |
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| 49 | |
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| 50 | #define PORT_STAT_CONNECTION 0x0001 |
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| 51 | #define PORT_STAT_ENABLE 0x0002 |
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| 52 | #define PORT_STAT_SUSPEND 0x0004 |
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| 53 | #define PORT_STAT_OVERCURRENT 0x0008 |
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| 54 | #define PORT_STAT_RESET 0x0010 |
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| 55 | #define PORT_STAT_POWER 0x0100 |
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| 56 | #define PORT_STAT_LOW_SPEED 0x0200 |
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| 57 | #define PORT_STAT_HIGH_SPEED 0x0400 |
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| 58 | #define PORT_STAT_TEST 0x0800 |
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| 59 | #define PORT_STAT_INDICATOR 0x1000 |
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| 60 | |
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| 61 | #define PORT_STAT_C_CONNECTION 0x0001 |
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| 62 | #define PORT_STAT_C_ENABLE 0x0002 |
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| 63 | #define PORT_STAT_C_SUSPEND 0x0004 |
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| 64 | #define PORT_STAT_C_OVERCURRENT 0x0008 |
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| 65 | #define PORT_STAT_C_RESET 0x0010 |
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| 66 | |
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| 67 | #define PORT_CONNECTION 0 |
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| 68 | #define PORT_ENABLE 1 |
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| 69 | #define PORT_SUSPEND 2 |
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| 70 | #define PORT_OVERCURRENT 3 |
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| 71 | #define PORT_RESET 4 |
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| 72 | #define PORT_POWER 8 |
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| 73 | #define PORT_LOWSPEED 9 |
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| 74 | #define PORT_HIGHSPEED 10 |
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| 75 | #define PORT_C_CONNECTION 16 |
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| 76 | #define PORT_C_ENABLE 17 |
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| 77 | #define PORT_C_SUSPEND 18 |
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| 78 | #define PORT_C_OVERCURRENT 19 |
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| 79 | #define PORT_C_RESET 20 |
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| 80 | #define PORT_TEST 21 |
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| 81 | #define PORT_INDICATOR 22 |
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| 82 | |
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| 83 | /* same as Linux kernel root hubs */ |
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| 84 | |
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| 85 | static const uint8_t qemu_hub_dev_descriptor[] = { |
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| 86 | 0x12, /* u8 bLength; */ |
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| 87 | 0x01, /* u8 bDescriptorType; Device */ |
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| 88 | 0x10, 0x01, /* u16 bcdUSB; v1.1 */ |
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| 89 | |
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| 90 | 0x09, /* u8 bDeviceClass; HUB_CLASSCODE */ |
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| 91 | 0x00, /* u8 bDeviceSubClass; */ |
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| 92 | 0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
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| 93 | 0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
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| 94 | |
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| 95 | 0x00, 0x00, /* u16 idVendor; */ |
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| 96 | 0x00, 0x00, /* u16 idProduct; */ |
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| 97 | 0x01, 0x01, /* u16 bcdDevice */ |
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| 98 | |
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| 99 | 0x03, /* u8 iManufacturer; */ |
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| 100 | 0x02, /* u8 iProduct; */ |
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| 101 | 0x01, /* u8 iSerialNumber; */ |
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| 102 | 0x01 /* u8 bNumConfigurations; */ |
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| 103 | }; |
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| 104 | |
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| 105 | /* XXX: patch interrupt size */ |
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| 106 | static const uint8_t qemu_hub_config_descriptor[] = { |
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| 107 | |
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| 108 | /* one configuration */ |
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| 109 | 0x09, /* u8 bLength; */ |
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| 110 | 0x02, /* u8 bDescriptorType; Configuration */ |
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| 111 | 0x19, 0x00, /* u16 wTotalLength; */ |
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| 112 | 0x01, /* u8 bNumInterfaces; (1) */ |
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| 113 | 0x01, /* u8 bConfigurationValue; */ |
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| 114 | 0x00, /* u8 iConfiguration; */ |
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| 115 | 0xc0, /* u8 bmAttributes; |
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| 116 | Bit 7: must be set, |
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| 117 | 6: Self-powered, |
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| 118 | 5: Remote wakeup, |
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| 119 | 4..0: resvd */ |
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| 120 | 0x00, /* u8 MaxPower; */ |
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| 121 | |
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| 122 | /* USB 1.1: |
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| 123 | * USB 2.0, single TT organization (mandatory): |
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| 124 | * one interface, protocol 0 |
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| 125 | * |
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| 126 | * USB 2.0, multiple TT organization (optional): |
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| 127 | * two interfaces, protocols 1 (like single TT) |
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| 128 | * and 2 (multiple TT mode) ... config is |
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| 129 | * sometimes settable |
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| 130 | * NOT IMPLEMENTED |
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| 131 | */ |
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| 132 | |
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| 133 | /* one interface */ |
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| 134 | 0x09, /* u8 if_bLength; */ |
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| 135 | 0x04, /* u8 if_bDescriptorType; Interface */ |
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| 136 | 0x00, /* u8 if_bInterfaceNumber; */ |
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| 137 | 0x00, /* u8 if_bAlternateSetting; */ |
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| 138 | 0x01, /* u8 if_bNumEndpoints; */ |
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| 139 | 0x09, /* u8 if_bInterfaceClass; HUB_CLASSCODE */ |
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| 140 | 0x00, /* u8 if_bInterfaceSubClass; */ |
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| 141 | 0x00, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */ |
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| 142 | 0x00, /* u8 if_iInterface; */ |
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| 143 | |
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| 144 | /* one endpoint (status change endpoint) */ |
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| 145 | 0x07, /* u8 ep_bLength; */ |
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| 146 | 0x05, /* u8 ep_bDescriptorType; Endpoint */ |
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| 147 | 0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
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| 148 | 0x03, /* u8 ep_bmAttributes; Interrupt */ |
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| 149 | 0x02, 0x00, /* u16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8) */ |
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| 150 | 0xff /* u8 ep_bInterval; (255ms -- usb 2.0 spec) */ |
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| 151 | }; |
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| 152 | |
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| 153 | static const uint8_t qemu_hub_hub_descriptor[] = |
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| 154 | { |
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| 155 | 0x00, /* u8 bLength; patched in later */ |
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| 156 | 0x29, /* u8 bDescriptorType; Hub-descriptor */ |
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| 157 | 0x00, /* u8 bNbrPorts; (patched later) */ |
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| 158 | 0x0a, /* u16 wHubCharacteristics; */ |
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| 159 | 0x00, /* (per-port OC, no power switching) */ |
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| 160 | 0x01, /* u8 bPwrOn2pwrGood; 2ms */ |
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| 161 | 0x00 /* u8 bHubContrCurrent; 0 mA */ |
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| 162 | |
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| 163 | /* DeviceRemovable and PortPwrCtrlMask patched in later */ |
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| 164 | }; |
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| 165 | |
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| 166 | static void usb_hub_attach(USBPort *port1, USBDevice *dev) |
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| 167 | { |
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| 168 | USBHubState *s = port1->opaque; |
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| 169 | USBHubPort *port = &s->ports[port1->index]; |
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| 170 | |
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| 171 | if (dev) { |
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| 172 | if (port->port.dev) |
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| 173 | usb_attach(port1, NULL); |
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| 174 | |
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| 175 | port->wPortStatus |= PORT_STAT_CONNECTION; |
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| 176 | port->wPortChange |= PORT_STAT_C_CONNECTION; |
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| 177 | if (dev->speed == USB_SPEED_LOW) |
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| 178 | port->wPortStatus |= PORT_STAT_LOW_SPEED; |
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| 179 | else |
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| 180 | port->wPortStatus &= ~PORT_STAT_LOW_SPEED; |
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| 181 | port->port.dev = dev; |
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| 182 | /* send the attach message */ |
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| 183 | dev->handle_packet(dev, |
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| 184 | USB_MSG_ATTACH, 0, 0, NULL, 0); |
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| 185 | } else { |
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| 186 | dev = port->port.dev; |
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| 187 | if (dev) { |
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| 188 | port->wPortStatus &= ~PORT_STAT_CONNECTION; |
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| 189 | port->wPortChange |= PORT_STAT_C_CONNECTION; |
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| 190 | if (port->wPortStatus & PORT_STAT_ENABLE) { |
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| 191 | port->wPortStatus &= ~PORT_STAT_ENABLE; |
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| 192 | port->wPortChange |= PORT_STAT_C_ENABLE; |
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| 193 | } |
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| 194 | /* send the detach message */ |
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| 195 | dev->handle_packet(dev, |
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| 196 | USB_MSG_DETACH, 0, 0, NULL, 0); |
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| 197 | port->port.dev = NULL; |
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| 198 | } |
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| 199 | } |
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| 200 | } |
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| 201 | |
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| 202 | static void usb_hub_handle_reset(USBDevice *dev) |
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| 203 | { |
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| 204 | /* XXX: do it */ |
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| 205 | } |
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| 206 | |
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| 207 | static int usb_hub_handle_control(USBDevice *dev, int request, int value, |
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| 208 | int index, int length, uint8_t *data) |
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| 209 | { |
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| 210 | USBHubState *s = (USBHubState *)dev; |
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| 211 | int ret; |
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| 212 | |
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| 213 | switch(request) { |
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| 214 | case DeviceRequest | USB_REQ_GET_STATUS: |
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| 215 | data[0] = (1 << USB_DEVICE_SELF_POWERED) | |
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| 216 | (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
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| 217 | data[1] = 0x00; |
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| 218 | ret = 2; |
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| 219 | break; |
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| 220 | case DeviceOutRequest | USB_REQ_CLEAR_FEATURE: |
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| 221 | if (value == USB_DEVICE_REMOTE_WAKEUP) { |
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| 222 | dev->remote_wakeup = 0; |
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| 223 | } else { |
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| 224 | goto fail; |
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| 225 | } |
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| 226 | ret = 0; |
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| 227 | break; |
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| 228 | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: |
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| 229 | if (value == 0 && index != 0x81) { /* clear ep halt */ |
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| 230 | goto fail; |
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| 231 | } |
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| 232 | ret = 0; |
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| 233 | break; |
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| 234 | case DeviceOutRequest | USB_REQ_SET_FEATURE: |
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| 235 | if (value == USB_DEVICE_REMOTE_WAKEUP) { |
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| 236 | dev->remote_wakeup = 1; |
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| 237 | } else { |
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| 238 | goto fail; |
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| 239 | } |
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| 240 | ret = 0; |
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| 241 | break; |
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| 242 | case DeviceOutRequest | USB_REQ_SET_ADDRESS: |
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| 243 | dev->addr = value; |
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| 244 | ret = 0; |
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| 245 | break; |
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| 246 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
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| 247 | switch(value >> 8) { |
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| 248 | case USB_DT_DEVICE: |
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| 249 | memcpy(data, qemu_hub_dev_descriptor, |
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| 250 | sizeof(qemu_hub_dev_descriptor)); |
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| 251 | ret = sizeof(qemu_hub_dev_descriptor); |
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| 252 | break; |
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| 253 | case USB_DT_CONFIG: |
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| 254 | memcpy(data, qemu_hub_config_descriptor, |
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| 255 | sizeof(qemu_hub_config_descriptor)); |
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| 256 | |
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| 257 | /* status change endpoint size based on number |
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| 258 | * of ports */ |
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| 259 | data[22] = (s->nb_ports + 1 + 7) / 8; |
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| 260 | |
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| 261 | ret = sizeof(qemu_hub_config_descriptor); |
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| 262 | break; |
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| 263 | case USB_DT_STRING: |
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| 264 | switch(value & 0xff) { |
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| 265 | case 0: |
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| 266 | /* language ids */ |
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| 267 | data[0] = 4; |
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| 268 | data[1] = 3; |
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| 269 | data[2] = 0x09; |
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| 270 | data[3] = 0x04; |
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| 271 | ret = 4; |
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| 272 | break; |
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| 273 | case 1: |
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| 274 | /* serial number */ |
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| 275 | ret = set_usb_string(data, "314159"); |
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| 276 | break; |
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| 277 | case 2: |
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| 278 | /* product description */ |
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| 279 | ret = set_usb_string(data, "QEMU USB Hub"); |
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| 280 | break; |
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| 281 | case 3: |
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| 282 | /* vendor description */ |
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| 283 | ret = set_usb_string(data, "QEMU " QEMU_VERSION); |
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| 284 | break; |
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| 285 | default: |
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| 286 | goto fail; |
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| 287 | } |
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| 288 | break; |
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| 289 | default: |
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| 290 | goto fail; |
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| 291 | } |
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| 292 | break; |
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| 293 | case DeviceRequest | USB_REQ_GET_CONFIGURATION: |
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| 294 | data[0] = 1; |
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| 295 | ret = 1; |
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| 296 | break; |
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| 297 | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: |
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| 298 | ret = 0; |
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| 299 | break; |
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| 300 | case DeviceRequest | USB_REQ_GET_INTERFACE: |
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| 301 | data[0] = 0; |
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| 302 | ret = 1; |
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| 303 | break; |
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| 304 | case DeviceOutRequest | USB_REQ_SET_INTERFACE: |
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| 305 | ret = 0; |
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| 306 | break; |
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| 307 | /* usb specific requests */ |
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| 308 | case GetHubStatus: |
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| 309 | data[0] = 0; |
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| 310 | data[1] = 0; |
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| 311 | data[2] = 0; |
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| 312 | data[3] = 0; |
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| 313 | ret = 4; |
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| 314 | break; |
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| 315 | case GetPortStatus: |
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| 316 | { |
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| 317 | unsigned int n = index - 1; |
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| 318 | USBHubPort *port; |
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| 319 | if (n >= s->nb_ports) |
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| 320 | goto fail; |
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| 321 | port = &s->ports[n]; |
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| 322 | data[0] = port->wPortStatus; |
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| 323 | data[1] = port->wPortStatus >> 8; |
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| 324 | data[2] = port->wPortChange; |
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| 325 | data[3] = port->wPortChange >> 8; |
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| 326 | ret = 4; |
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| 327 | } |
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| 328 | break; |
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| 329 | case SetHubFeature: |
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| 330 | case ClearHubFeature: |
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| 331 | if (value == 0 || value == 1) { |
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| 332 | } else { |
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| 333 | goto fail; |
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| 334 | } |
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| 335 | ret = 0; |
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| 336 | break; |
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| 337 | case SetPortFeature: |
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| 338 | { |
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| 339 | unsigned int n = index - 1; |
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| 340 | USBHubPort *port; |
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| 341 | USBDevice *dev; |
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| 342 | if (n >= s->nb_ports) |
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| 343 | goto fail; |
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| 344 | port = &s->ports[n]; |
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| 345 | dev = port->port.dev; |
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| 346 | switch(value) { |
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| 347 | case PORT_SUSPEND: |
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| 348 | port->wPortStatus |= PORT_STAT_SUSPEND; |
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| 349 | break; |
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| 350 | case PORT_RESET: |
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| 351 | if (dev) { |
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| 352 | dev->handle_packet(dev, |
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| 353 | USB_MSG_RESET, 0, 0, NULL, 0); |
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| 354 | port->wPortChange |= PORT_STAT_C_RESET; |
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| 355 | /* set enable bit */ |
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| 356 | port->wPortStatus |= PORT_STAT_ENABLE; |
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| 357 | } |
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| 358 | break; |
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| 359 | case PORT_POWER: |
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| 360 | break; |
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| 361 | default: |
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| 362 | goto fail; |
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| 363 | } |
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| 364 | ret = 0; |
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| 365 | } |
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| 366 | break; |
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| 367 | case ClearPortFeature: |
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| 368 | { |
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| 369 | unsigned int n = index - 1; |
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| 370 | USBHubPort *port; |
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| 371 | USBDevice *dev; |
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| 372 | if (n >= s->nb_ports) |
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| 373 | goto fail; |
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| 374 | port = &s->ports[n]; |
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| 375 | dev = port->port.dev; |
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| 376 | switch(value) { |
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| 377 | case PORT_ENABLE: |
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| 378 | port->wPortStatus &= ~PORT_STAT_ENABLE; |
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| 379 | break; |
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| 380 | case PORT_C_ENABLE: |
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| 381 | port->wPortChange &= ~PORT_STAT_C_ENABLE; |
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| 382 | break; |
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| 383 | case PORT_SUSPEND: |
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| 384 | port->wPortStatus &= ~PORT_STAT_SUSPEND; |
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| 385 | break; |
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| 386 | case PORT_C_SUSPEND: |
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| 387 | port->wPortChange &= ~PORT_STAT_C_SUSPEND; |
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| 388 | break; |
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| 389 | case PORT_C_CONNECTION: |
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| 390 | port->wPortChange &= ~PORT_STAT_C_CONNECTION; |
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| 391 | break; |
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| 392 | case PORT_C_OVERCURRENT: |
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| 393 | port->wPortChange &= ~PORT_STAT_C_OVERCURRENT; |
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| 394 | break; |
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| 395 | case PORT_C_RESET: |
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| 396 | port->wPortChange &= ~PORT_STAT_C_RESET; |
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| 397 | break; |
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| 398 | default: |
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| 399 | goto fail; |
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| 400 | } |
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| 401 | ret = 0; |
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| 402 | } |
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| 403 | break; |
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| 404 | case GetHubDescriptor: |
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| 405 | { |
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| 406 | unsigned int n, limit, var_hub_size = 0; |
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| 407 | memcpy(data, qemu_hub_hub_descriptor, |
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| 408 | sizeof(qemu_hub_hub_descriptor)); |
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| 409 | data[2] = s->nb_ports; |
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| 410 | |
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| 411 | /* fill DeviceRemovable bits */ |
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| 412 | limit = ((s->nb_ports + 1 + 7) / 8) + 7; |
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| 413 | for (n = 7; n < limit; n++) { |
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| 414 | data[n] = 0x00; |
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| 415 | var_hub_size++; |
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| 416 | } |
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| 417 | |
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| 418 | /* fill PortPwrCtrlMask bits */ |
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| 419 | limit = limit + ((s->nb_ports + 7) / 8); |
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| 420 | for (;n < limit; n++) { |
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| 421 | data[n] = 0xff; |
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| 422 | var_hub_size++; |
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| 423 | } |
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| 424 | |
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| 425 | ret = sizeof(qemu_hub_hub_descriptor) + var_hub_size; |
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| 426 | data[0] = ret; |
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| 427 | break; |
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| 428 | } |
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| 429 | default: |
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| 430 | fail: |
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| 431 | ret = USB_RET_STALL; |
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| 432 | break; |
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| 433 | } |
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| 434 | return ret; |
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| 435 | } |
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| 436 | |
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| 437 | static int usb_hub_handle_data(USBDevice *dev, int pid, |
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| 438 | uint8_t devep, uint8_t *data, int len) |
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| 439 | { |
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| 440 | USBHubState *s = (USBHubState *)dev; |
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| 441 | int ret; |
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| 442 | |
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| 443 | switch(pid) { |
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| 444 | case USB_TOKEN_IN: |
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| 445 | if (devep == 1) { |
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| 446 | USBHubPort *port; |
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| 447 | unsigned int status; |
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| 448 | int i, n; |
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| 449 | n = (s->nb_ports + 1 + 7) / 8; |
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| 450 | if (len == 1) { /* FreeBSD workaround */ |
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| 451 | n = 1; |
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| 452 | } else if (n > len) { |
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| 453 | return USB_RET_BABBLE; |
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| 454 | } |
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| 455 | status = 0; |
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| 456 | for(i = 0; i < s->nb_ports; i++) { |
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| 457 | port = &s->ports[i]; |
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| 458 | if (port->wPortChange) |
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| 459 | status |= (1 << (i + 1)); |
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| 460 | } |
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| 461 | if (status != 0) { |
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| 462 | for(i = 0; i < n; i++) { |
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| 463 | data[i] = status >> (8 * i); |
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| 464 | } |
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| 465 | ret = n; |
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| 466 | } else { |
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| 467 | ret = USB_RET_NAK; /* usb11 11.13.1 */ |
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| 468 | } |
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| 469 | } else { |
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| 470 | goto fail; |
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| 471 | } |
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| 472 | break; |
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| 473 | case USB_TOKEN_OUT: |
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| 474 | default: |
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| 475 | fail: |
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| 476 | ret = USB_RET_STALL; |
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| 477 | break; |
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| 478 | } |
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| 479 | return ret; |
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| 480 | } |
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| 481 | |
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| 482 | static int usb_hub_broadcast_packet(USBHubState *s, int pid, |
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| 483 | uint8_t devaddr, uint8_t devep, |
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| 484 | uint8_t *data, int len) |
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| 485 | { |
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| 486 | USBHubPort *port; |
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| 487 | USBDevice *dev; |
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| 488 | int i, ret; |
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| 489 | |
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| 490 | for(i = 0; i < s->nb_ports; i++) { |
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| 491 | port = &s->ports[i]; |
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| 492 | dev = port->port.dev; |
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| 493 | if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) { |
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| 494 | ret = dev->handle_packet(dev, pid, |
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| 495 | devaddr, devep, |
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| 496 | data, len); |
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| 497 | if (ret != USB_RET_NODEV) { |
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| 498 | return ret; |
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| 499 | } |
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| 500 | } |
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| 501 | } |
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| 502 | return USB_RET_NODEV; |
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| 503 | } |
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| 504 | |
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| 505 | static int usb_hub_handle_packet(USBDevice *dev, int pid, |
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| 506 | uint8_t devaddr, uint8_t devep, |
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| 507 | uint8_t *data, int len) |
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| 508 | { |
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| 509 | USBHubState *s = (USBHubState *)dev; |
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| 510 | |
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| 511 | #if defined(DEBUG) && 0 |
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| 512 | printf("usb_hub: pid=0x%x\n", pid); |
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| 513 | #endif |
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| 514 | if (dev->state == USB_STATE_DEFAULT && |
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| 515 | dev->addr != 0 && |
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| 516 | devaddr != dev->addr && |
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| 517 | (pid == USB_TOKEN_SETUP || |
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| 518 | pid == USB_TOKEN_OUT || |
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| 519 | pid == USB_TOKEN_IN)) { |
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| 520 | /* broadcast the packet to the devices */ |
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| 521 | return usb_hub_broadcast_packet(s, pid, devaddr, devep, data, len); |
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| 522 | } |
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| 523 | return usb_generic_handle_packet(dev, pid, devaddr, devep, data, len); |
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| 524 | } |
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| 525 | |
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| 526 | static void usb_hub_handle_destroy(USBDevice *dev) |
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| 527 | { |
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| 528 | USBHubState *s = (USBHubState *)dev; |
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| 529 | |
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| 530 | qemu_free(s); |
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| 531 | } |
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| 532 | |
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| 533 | USBDevice *usb_hub_init(int nb_ports) |
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| 534 | { |
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| 535 | USBHubState *s; |
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| 536 | USBHubPort *port; |
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| 537 | int i; |
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| 538 | |
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| 539 | if (nb_ports > MAX_PORTS) |
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| 540 | return NULL; |
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| 541 | s = qemu_mallocz(sizeof(USBHubState)); |
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| 542 | if (!s) |
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| 543 | return NULL; |
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| 544 | s->dev.speed = USB_SPEED_FULL; |
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| 545 | s->dev.handle_packet = usb_hub_handle_packet; |
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| 546 | |
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| 547 | /* generic USB device init */ |
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| 548 | s->dev.handle_reset = usb_hub_handle_reset; |
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| 549 | s->dev.handle_control = usb_hub_handle_control; |
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| 550 | s->dev.handle_data = usb_hub_handle_data; |
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| 551 | s->dev.handle_destroy = usb_hub_handle_destroy; |
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| 552 | |
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| 553 | pstrcpy(s->dev.devname, sizeof(s->dev.devname), "QEMU USB Hub"); |
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| 554 | |
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| 555 | s->nb_ports = nb_ports; |
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| 556 | for(i = 0; i < s->nb_ports; i++) { |
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| 557 | port = &s->ports[i]; |
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| 558 | qemu_register_usb_port(&port->port, s, i, usb_hub_attach); |
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| 559 | port->wPortStatus = PORT_STAT_POWER; |
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| 560 | port->wPortChange = 0; |
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| 561 | } |
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| 562 | return (USBDevice *)s; |
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| 563 | } |
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