root / hw / usb-bt.c @ 079d0b7f
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/*
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* QEMU Bluetooth HCI USB Transport Layer v1.0
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*
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* Copyright (C) 2007 OpenMoko, Inc.
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* Copyright (C) 2008 Andrzej Zaborowski <balrog@zabor.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu-common.h" |
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#include "usb.h" |
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#include "usb-desc.h" |
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#include "net.h" |
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#include "bt.h" |
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struct USBBtState {
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USBDevice dev; |
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struct HCIInfo *hci;
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int config;
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#define CFIFO_LEN_MASK 255 |
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#define DFIFO_LEN_MASK 4095 |
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struct usb_hci_in_fifo_s {
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uint8_t data[(DFIFO_LEN_MASK + 1) * 2]; |
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struct {
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uint8_t *data; |
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int len;
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} fifo[CFIFO_LEN_MASK + 1];
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int dstart, dlen, dsize, start, len;
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} evt, acl, sco; |
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|
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struct usb_hci_out_fifo_s {
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uint8_t data[4096];
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int len;
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} outcmd, outacl, outsco; |
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}; |
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|
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#define USB_EVT_EP 1 |
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#define USB_ACL_EP 2 |
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#define USB_SCO_EP 3 |
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|
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enum {
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STR_MANUFACTURER = 1,
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STR_SERIALNUMBER, |
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}; |
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|
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static const USBDescStrings desc_strings = { |
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[STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
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[STR_SERIALNUMBER] = "1",
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}; |
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|
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static const USBDescIface desc_iface_bluetooth[] = { |
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{ |
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.bInterfaceNumber = 0,
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.bNumEndpoints = 3,
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.bInterfaceClass = 0xe0, /* Wireless */ |
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.bInterfaceSubClass = 0x01, /* Radio Frequency */ |
70 |
.bInterfaceProtocol = 0x01, /* Bluetooth */ |
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.eps = (USBDescEndpoint[]) { |
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{ |
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.bEndpointAddress = USB_DIR_IN | USB_EVT_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_INT, |
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.wMaxPacketSize = 0x10,
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.bInterval = 0x02,
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}, |
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{ |
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.bEndpointAddress = USB_DIR_OUT | USB_ACL_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_BULK, |
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.wMaxPacketSize = 0x40,
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.bInterval = 0x0a,
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}, |
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{ |
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.bEndpointAddress = USB_DIR_IN | USB_ACL_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_BULK, |
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.wMaxPacketSize = 0x40,
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.bInterval = 0x0a,
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}, |
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}, |
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},{ |
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.bInterfaceNumber = 1,
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.bAlternateSetting = 0,
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.bNumEndpoints = 2,
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.bInterfaceClass = 0xe0, /* Wireless */ |
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.bInterfaceSubClass = 0x01, /* Radio Frequency */ |
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.bInterfaceProtocol = 0x01, /* Bluetooth */ |
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.eps = (USBDescEndpoint[]) { |
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{ |
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.bEndpointAddress = USB_DIR_OUT | USB_SCO_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
102 |
.wMaxPacketSize = 0,
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.bInterval = 0x01,
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}, |
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{ |
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.bEndpointAddress = USB_DIR_IN | USB_SCO_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
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.wMaxPacketSize = 0,
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.bInterval = 0x01,
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}, |
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}, |
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},{ |
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.bInterfaceNumber = 1,
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.bAlternateSetting = 1,
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.bNumEndpoints = 2,
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.bInterfaceClass = 0xe0, /* Wireless */ |
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.bInterfaceSubClass = 0x01, /* Radio Frequency */ |
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.bInterfaceProtocol = 0x01, /* Bluetooth */ |
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.eps = (USBDescEndpoint[]) { |
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{ |
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.bEndpointAddress = USB_DIR_OUT | USB_SCO_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
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.wMaxPacketSize = 0x09,
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.bInterval = 0x01,
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}, |
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{ |
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.bEndpointAddress = USB_DIR_IN | USB_SCO_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
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.wMaxPacketSize = 0x09,
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.bInterval = 0x01,
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}, |
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}, |
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},{ |
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.bInterfaceNumber = 1,
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.bAlternateSetting = 2,
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.bNumEndpoints = 2,
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.bInterfaceClass = 0xe0, /* Wireless */ |
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.bInterfaceSubClass = 0x01, /* Radio Frequency */ |
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.bInterfaceProtocol = 0x01, /* Bluetooth */ |
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.eps = (USBDescEndpoint[]) { |
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{ |
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.bEndpointAddress = USB_DIR_OUT | USB_SCO_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
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.wMaxPacketSize = 0x11,
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.bInterval = 0x01,
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}, |
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{ |
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.bEndpointAddress = USB_DIR_IN | USB_SCO_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
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.wMaxPacketSize = 0x11,
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.bInterval = 0x01,
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}, |
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}, |
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},{ |
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.bInterfaceNumber = 1,
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.bAlternateSetting = 3,
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.bNumEndpoints = 2,
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.bInterfaceClass = 0xe0, /* Wireless */ |
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.bInterfaceSubClass = 0x01, /* Radio Frequency */ |
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.bInterfaceProtocol = 0x01, /* Bluetooth */ |
161 |
.eps = (USBDescEndpoint[]) { |
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{ |
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.bEndpointAddress = USB_DIR_OUT | USB_SCO_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
165 |
.wMaxPacketSize = 0x19,
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.bInterval = 0x01,
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}, |
168 |
{ |
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.bEndpointAddress = USB_DIR_IN | USB_SCO_EP, |
170 |
.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
171 |
.wMaxPacketSize = 0x19,
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.bInterval = 0x01,
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}, |
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}, |
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},{ |
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.bInterfaceNumber = 1,
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.bAlternateSetting = 4,
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.bNumEndpoints = 2,
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.bInterfaceClass = 0xe0, /* Wireless */ |
180 |
.bInterfaceSubClass = 0x01, /* Radio Frequency */ |
181 |
.bInterfaceProtocol = 0x01, /* Bluetooth */ |
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.eps = (USBDescEndpoint[]) { |
183 |
{ |
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.bEndpointAddress = USB_DIR_OUT | USB_SCO_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
186 |
.wMaxPacketSize = 0x21,
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.bInterval = 0x01,
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}, |
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{ |
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.bEndpointAddress = USB_DIR_IN | USB_SCO_EP, |
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.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
192 |
.wMaxPacketSize = 0x21,
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.bInterval = 0x01,
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}, |
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}, |
196 |
},{ |
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.bInterfaceNumber = 1,
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.bAlternateSetting = 5,
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.bNumEndpoints = 2,
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.bInterfaceClass = 0xe0, /* Wireless */ |
201 |
.bInterfaceSubClass = 0x01, /* Radio Frequency */ |
202 |
.bInterfaceProtocol = 0x01, /* Bluetooth */ |
203 |
.eps = (USBDescEndpoint[]) { |
204 |
{ |
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.bEndpointAddress = USB_DIR_OUT | USB_SCO_EP, |
206 |
.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
207 |
.wMaxPacketSize = 0x31,
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.bInterval = 0x01,
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209 |
}, |
210 |
{ |
211 |
.bEndpointAddress = USB_DIR_IN | USB_SCO_EP, |
212 |
.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
213 |
.wMaxPacketSize = 0x31,
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214 |
.bInterval = 0x01,
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215 |
}, |
216 |
}, |
217 |
} |
218 |
}; |
219 |
|
220 |
static const USBDescDevice desc_device_bluetooth = { |
221 |
.bcdUSB = 0x0110,
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222 |
.bDeviceClass = 0xe0, /* Wireless */ |
223 |
.bDeviceSubClass = 0x01, /* Radio Frequency */ |
224 |
.bDeviceProtocol = 0x01, /* Bluetooth */ |
225 |
.bMaxPacketSize0 = 64,
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.bNumConfigurations = 1,
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.confs = (USBDescConfig[]) { |
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{ |
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.bNumInterfaces = 2,
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.bConfigurationValue = 1,
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.bmAttributes = 0xc0,
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.bMaxPower = 0,
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.nif = ARRAY_SIZE(desc_iface_bluetooth), |
234 |
.ifs = desc_iface_bluetooth, |
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}, |
236 |
}, |
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}; |
238 |
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239 |
static const USBDesc desc_bluetooth = { |
240 |
.id = { |
241 |
.idVendor = 0x0a12,
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.idProduct = 0x0001,
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.bcdDevice = 0x1958,
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244 |
.iManufacturer = STR_MANUFACTURER, |
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.iProduct = 0,
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.iSerialNumber = STR_SERIALNUMBER, |
247 |
}, |
248 |
.full = &desc_device_bluetooth, |
249 |
.str = desc_strings, |
250 |
}; |
251 |
|
252 |
static void usb_bt_fifo_reset(struct usb_hci_in_fifo_s *fifo) |
253 |
{ |
254 |
fifo->dstart = 0;
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255 |
fifo->dlen = 0;
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256 |
fifo->dsize = DFIFO_LEN_MASK + 1;
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fifo->start = 0;
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258 |
fifo->len = 0;
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259 |
} |
260 |
|
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static void usb_bt_fifo_enqueue(struct usb_hci_in_fifo_s *fifo, |
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const uint8_t *data, int len) |
263 |
{ |
264 |
int off = fifo->dstart + fifo->dlen;
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265 |
uint8_t *buf; |
266 |
|
267 |
fifo->dlen += len; |
268 |
if (off <= DFIFO_LEN_MASK) {
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269 |
if (off + len > DFIFO_LEN_MASK + 1 && |
270 |
(fifo->dsize = off + len) > (DFIFO_LEN_MASK + 1) * 2) { |
271 |
fprintf(stderr, "%s: can't alloc %i bytes\n", __FUNCTION__, len);
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272 |
exit(-1);
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273 |
} |
274 |
buf = fifo->data + off; |
275 |
} else {
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276 |
if (fifo->dlen > fifo->dsize) {
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277 |
fprintf(stderr, "%s: can't alloc %i bytes\n", __FUNCTION__, len);
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278 |
exit(-1);
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279 |
} |
280 |
buf = fifo->data + off - fifo->dsize; |
281 |
} |
282 |
|
283 |
off = (fifo->start + fifo->len ++) & CFIFO_LEN_MASK; |
284 |
fifo->fifo[off].data = memcpy(buf, data, len); |
285 |
fifo->fifo[off].len = len; |
286 |
} |
287 |
|
288 |
static inline int usb_bt_fifo_dequeue(struct usb_hci_in_fifo_s *fifo, |
289 |
USBPacket *p) |
290 |
{ |
291 |
int len;
|
292 |
|
293 |
if (likely(!fifo->len))
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294 |
return USB_RET_STALL;
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295 |
|
296 |
len = MIN(p->iov.size, fifo->fifo[fifo->start].len); |
297 |
usb_packet_copy(p, fifo->fifo[fifo->start].data, len); |
298 |
if (len == p->iov.size) {
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299 |
fifo->fifo[fifo->start].len -= len; |
300 |
fifo->fifo[fifo->start].data += len; |
301 |
} else {
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302 |
fifo->start ++; |
303 |
fifo->start &= CFIFO_LEN_MASK; |
304 |
fifo->len --; |
305 |
} |
306 |
|
307 |
fifo->dstart += len; |
308 |
fifo->dlen -= len; |
309 |
if (fifo->dstart >= fifo->dsize) {
|
310 |
fifo->dstart = 0;
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311 |
fifo->dsize = DFIFO_LEN_MASK + 1;
|
312 |
} |
313 |
|
314 |
return len;
|
315 |
} |
316 |
|
317 |
static inline void usb_bt_fifo_out_enqueue(struct USBBtState *s, |
318 |
struct usb_hci_out_fifo_s *fifo,
|
319 |
void (*send)(struct HCIInfo *, const uint8_t *, int), |
320 |
int (*complete)(const uint8_t *, int), |
321 |
USBPacket *p) |
322 |
{ |
323 |
usb_packet_copy(p, fifo->data + fifo->len, p->iov.size); |
324 |
fifo->len += p->iov.size; |
325 |
if (complete(fifo->data, fifo->len)) {
|
326 |
send(s->hci, fifo->data, fifo->len); |
327 |
fifo->len = 0;
|
328 |
} |
329 |
|
330 |
/* TODO: do we need to loop? */
|
331 |
} |
332 |
|
333 |
static int usb_bt_hci_cmd_complete(const uint8_t *data, int len) |
334 |
{ |
335 |
len -= HCI_COMMAND_HDR_SIZE; |
336 |
return len >= 0 && |
337 |
len >= ((struct hci_command_hdr *) data)->plen;
|
338 |
} |
339 |
|
340 |
static int usb_bt_hci_acl_complete(const uint8_t *data, int len) |
341 |
{ |
342 |
len -= HCI_ACL_HDR_SIZE; |
343 |
return len >= 0 && |
344 |
len >= le16_to_cpu(((struct hci_acl_hdr *) data)->dlen);
|
345 |
} |
346 |
|
347 |
static int usb_bt_hci_sco_complete(const uint8_t *data, int len) |
348 |
{ |
349 |
len -= HCI_SCO_HDR_SIZE; |
350 |
return len >= 0 && |
351 |
len >= ((struct hci_sco_hdr *) data)->dlen;
|
352 |
} |
353 |
|
354 |
static void usb_bt_handle_reset(USBDevice *dev) |
355 |
{ |
356 |
struct USBBtState *s = (struct USBBtState *) dev->opaque; |
357 |
|
358 |
usb_bt_fifo_reset(&s->evt); |
359 |
usb_bt_fifo_reset(&s->acl); |
360 |
usb_bt_fifo_reset(&s->sco); |
361 |
s->outcmd.len = 0;
|
362 |
s->outacl.len = 0;
|
363 |
s->outsco.len = 0;
|
364 |
} |
365 |
|
366 |
static int usb_bt_handle_control(USBDevice *dev, USBPacket *p, |
367 |
int request, int value, int index, int length, uint8_t *data) |
368 |
{ |
369 |
struct USBBtState *s = (struct USBBtState *) dev->opaque; |
370 |
int ret;
|
371 |
|
372 |
ret = usb_desc_handle_control(dev, p, request, value, index, length, data); |
373 |
if (ret >= 0) { |
374 |
switch (request) {
|
375 |
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
376 |
s->config = 0;
|
377 |
break;
|
378 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
379 |
s->config = 1;
|
380 |
usb_bt_fifo_reset(&s->evt); |
381 |
usb_bt_fifo_reset(&s->acl); |
382 |
usb_bt_fifo_reset(&s->sco); |
383 |
break;
|
384 |
} |
385 |
return ret;
|
386 |
} |
387 |
|
388 |
ret = 0;
|
389 |
switch (request) {
|
390 |
case InterfaceRequest | USB_REQ_GET_STATUS:
|
391 |
case EndpointRequest | USB_REQ_GET_STATUS:
|
392 |
data[0] = 0x00; |
393 |
data[1] = 0x00; |
394 |
ret = 2;
|
395 |
break;
|
396 |
case InterfaceOutRequest | USB_REQ_CLEAR_FEATURE:
|
397 |
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
|
398 |
goto fail;
|
399 |
case InterfaceOutRequest | USB_REQ_SET_FEATURE:
|
400 |
case EndpointOutRequest | USB_REQ_SET_FEATURE:
|
401 |
goto fail;
|
402 |
break;
|
403 |
case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_DEVICE) << 8): |
404 |
if (s->config)
|
405 |
usb_bt_fifo_out_enqueue(s, &s->outcmd, s->hci->cmd_send, |
406 |
usb_bt_hci_cmd_complete, p); |
407 |
break;
|
408 |
default:
|
409 |
fail:
|
410 |
ret = USB_RET_STALL; |
411 |
break;
|
412 |
} |
413 |
return ret;
|
414 |
} |
415 |
|
416 |
static int usb_bt_handle_data(USBDevice *dev, USBPacket *p) |
417 |
{ |
418 |
struct USBBtState *s = (struct USBBtState *) dev->opaque; |
419 |
int ret = 0; |
420 |
|
421 |
if (!s->config)
|
422 |
goto fail;
|
423 |
|
424 |
switch (p->pid) {
|
425 |
case USB_TOKEN_IN:
|
426 |
switch (p->ep->nr) {
|
427 |
case USB_EVT_EP:
|
428 |
ret = usb_bt_fifo_dequeue(&s->evt, p); |
429 |
break;
|
430 |
|
431 |
case USB_ACL_EP:
|
432 |
ret = usb_bt_fifo_dequeue(&s->acl, p); |
433 |
break;
|
434 |
|
435 |
case USB_SCO_EP:
|
436 |
ret = usb_bt_fifo_dequeue(&s->sco, p); |
437 |
break;
|
438 |
|
439 |
default:
|
440 |
goto fail;
|
441 |
} |
442 |
break;
|
443 |
|
444 |
case USB_TOKEN_OUT:
|
445 |
switch (p->ep->nr) {
|
446 |
case USB_ACL_EP:
|
447 |
usb_bt_fifo_out_enqueue(s, &s->outacl, s->hci->acl_send, |
448 |
usb_bt_hci_acl_complete, p); |
449 |
break;
|
450 |
|
451 |
case USB_SCO_EP:
|
452 |
usb_bt_fifo_out_enqueue(s, &s->outsco, s->hci->sco_send, |
453 |
usb_bt_hci_sco_complete, p); |
454 |
break;
|
455 |
|
456 |
default:
|
457 |
goto fail;
|
458 |
} |
459 |
break;
|
460 |
|
461 |
default:
|
462 |
fail:
|
463 |
ret = USB_RET_STALL; |
464 |
break;
|
465 |
} |
466 |
|
467 |
return ret;
|
468 |
} |
469 |
|
470 |
static void usb_bt_out_hci_packet_event(void *opaque, |
471 |
const uint8_t *data, int len) |
472 |
{ |
473 |
struct USBBtState *s = (struct USBBtState *) opaque; |
474 |
|
475 |
usb_bt_fifo_enqueue(&s->evt, data, len); |
476 |
} |
477 |
|
478 |
static void usb_bt_out_hci_packet_acl(void *opaque, |
479 |
const uint8_t *data, int len) |
480 |
{ |
481 |
struct USBBtState *s = (struct USBBtState *) opaque; |
482 |
|
483 |
usb_bt_fifo_enqueue(&s->acl, data, len); |
484 |
} |
485 |
|
486 |
static void usb_bt_handle_destroy(USBDevice *dev) |
487 |
{ |
488 |
struct USBBtState *s = (struct USBBtState *) dev->opaque; |
489 |
|
490 |
s->hci->opaque = NULL;
|
491 |
s->hci->evt_recv = NULL;
|
492 |
s->hci->acl_recv = NULL;
|
493 |
} |
494 |
|
495 |
static int usb_bt_initfn(USBDevice *dev) |
496 |
{ |
497 |
usb_desc_init(dev); |
498 |
return 0; |
499 |
} |
500 |
|
501 |
USBDevice *usb_bt_init(HCIInfo *hci) |
502 |
{ |
503 |
USBDevice *dev; |
504 |
struct USBBtState *s;
|
505 |
|
506 |
if (!hci)
|
507 |
return NULL; |
508 |
dev = usb_create_simple(NULL /* FIXME */, "usb-bt-dongle"); |
509 |
if (!dev) {
|
510 |
return NULL; |
511 |
} |
512 |
s = DO_UPCAST(struct USBBtState, dev, dev);
|
513 |
s->dev.opaque = s; |
514 |
|
515 |
s->hci = hci; |
516 |
s->hci->opaque = s; |
517 |
s->hci->evt_recv = usb_bt_out_hci_packet_event; |
518 |
s->hci->acl_recv = usb_bt_out_hci_packet_acl; |
519 |
|
520 |
usb_bt_handle_reset(&s->dev); |
521 |
|
522 |
return dev;
|
523 |
} |
524 |
|
525 |
static const VMStateDescription vmstate_usb_bt = { |
526 |
.name = "usb-bt",
|
527 |
.unmigratable = 1,
|
528 |
}; |
529 |
|
530 |
static void usb_bt_class_initfn(ObjectClass *klass, void *data) |
531 |
{ |
532 |
DeviceClass *dc = DEVICE_CLASS(klass); |
533 |
USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
534 |
|
535 |
uc->init = usb_bt_initfn; |
536 |
uc->product_desc = "QEMU BT dongle";
|
537 |
uc->usb_desc = &desc_bluetooth; |
538 |
uc->handle_reset = usb_bt_handle_reset; |
539 |
uc->handle_control = usb_bt_handle_control; |
540 |
uc->handle_data = usb_bt_handle_data; |
541 |
uc->handle_destroy = usb_bt_handle_destroy; |
542 |
dc->vmsd = &vmstate_usb_bt; |
543 |
} |
544 |
|
545 |
static TypeInfo bt_info = {
|
546 |
.name = "usb-bt-dongle",
|
547 |
.parent = TYPE_USB_DEVICE, |
548 |
.instance_size = sizeof(struct USBBtState), |
549 |
.class_init = usb_bt_class_initfn, |
550 |
}; |
551 |
|
552 |
static void usb_bt_register_devices(void) |
553 |
{ |
554 |
type_register_static(&bt_info); |
555 |
} |
556 |
device_init(usb_bt_register_devices) |