root / hw / usb / dev-bluetooth.c @ 927d4878
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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 "hw/usb.h" |
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#include "hw/usb/desc.h" |
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#include "bt/bt.h" |
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#include "hw/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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USBEndpoint *intr; |
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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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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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enum {
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STR_MANUFACTURER = 1,
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STR_SERIALNUMBER, |
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}; |
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static const USBDescStrings desc_strings = { |
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[STR_MANUFACTURER] = "QEMU",
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[STR_SERIALNUMBER] = "1",
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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 */ |
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.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, |
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.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 */ |
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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 = 0x19,
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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 = 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 */ |
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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 = 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, |
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.wMaxPacketSize = 0x21,
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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 = 5,
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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 = 0x31,
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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, |
213 |
.bmAttributes = USB_ENDPOINT_XFER_ISOC, |
214 |
.wMaxPacketSize = 0x31,
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.bInterval = 0x01,
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}, |
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}, |
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} |
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}; |
220 |
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static const USBDescDevice desc_device_bluetooth = { |
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.bcdUSB = 0x0110,
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.bDeviceClass = 0xe0, /* Wireless */ |
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.bDeviceSubClass = 0x01, /* Radio Frequency */ |
225 |
.bDeviceProtocol = 0x01, /* Bluetooth */ |
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.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), |
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.ifs = desc_iface_bluetooth, |
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}, |
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}, |
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}; |
239 |
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static const USBDesc desc_bluetooth = { |
241 |
.id = { |
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.idVendor = 0x0a12,
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.idProduct = 0x0001,
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.bcdDevice = 0x1958,
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.iManufacturer = STR_MANUFACTURER, |
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.iProduct = 0,
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.iSerialNumber = STR_SERIALNUMBER, |
248 |
}, |
249 |
.full = &desc_device_bluetooth, |
250 |
.str = desc_strings, |
251 |
}; |
252 |
|
253 |
static void usb_bt_fifo_reset(struct usb_hci_in_fifo_s *fifo) |
254 |
{ |
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fifo->dstart = 0;
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256 |
fifo->dlen = 0;
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fifo->dsize = DFIFO_LEN_MASK + 1;
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fifo->start = 0;
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fifo->len = 0;
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} |
261 |
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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) |
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{ |
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int off = fifo->dstart + fifo->dlen;
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uint8_t *buf; |
267 |
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fifo->dlen += len; |
269 |
if (off <= DFIFO_LEN_MASK) {
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if (off + len > DFIFO_LEN_MASK + 1 && |
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(fifo->dsize = off + len) > (DFIFO_LEN_MASK + 1) * 2) { |
272 |
fprintf(stderr, "%s: can't alloc %i bytes\n", __FUNCTION__, len);
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exit(-1);
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274 |
} |
275 |
buf = fifo->data + off; |
276 |
} else {
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if (fifo->dlen > fifo->dsize) {
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fprintf(stderr, "%s: can't alloc %i bytes\n", __FUNCTION__, len);
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exit(-1);
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280 |
} |
281 |
buf = fifo->data + off - fifo->dsize; |
282 |
} |
283 |
|
284 |
off = (fifo->start + fifo->len ++) & CFIFO_LEN_MASK; |
285 |
fifo->fifo[off].data = memcpy(buf, data, len); |
286 |
fifo->fifo[off].len = len; |
287 |
} |
288 |
|
289 |
static inline void usb_bt_fifo_dequeue(struct usb_hci_in_fifo_s *fifo, |
290 |
USBPacket *p) |
291 |
{ |
292 |
int len;
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293 |
|
294 |
assert(fifo->len != 0);
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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 |
|
315 |
static inline void usb_bt_fifo_out_enqueue(struct USBBtState *s, |
316 |
struct usb_hci_out_fifo_s *fifo,
|
317 |
void (*send)(struct HCIInfo *, const uint8_t *, int), |
318 |
int (*complete)(const uint8_t *, int), |
319 |
USBPacket *p) |
320 |
{ |
321 |
usb_packet_copy(p, fifo->data + fifo->len, p->iov.size); |
322 |
fifo->len += p->iov.size; |
323 |
if (complete(fifo->data, fifo->len)) {
|
324 |
send(s->hci, fifo->data, fifo->len); |
325 |
fifo->len = 0;
|
326 |
} |
327 |
|
328 |
/* TODO: do we need to loop? */
|
329 |
} |
330 |
|
331 |
static int usb_bt_hci_cmd_complete(const uint8_t *data, int len) |
332 |
{ |
333 |
len -= HCI_COMMAND_HDR_SIZE; |
334 |
return len >= 0 && |
335 |
len >= ((struct hci_command_hdr *) data)->plen;
|
336 |
} |
337 |
|
338 |
static int usb_bt_hci_acl_complete(const uint8_t *data, int len) |
339 |
{ |
340 |
len -= HCI_ACL_HDR_SIZE; |
341 |
return len >= 0 && |
342 |
len >= le16_to_cpu(((struct hci_acl_hdr *) data)->dlen);
|
343 |
} |
344 |
|
345 |
static int usb_bt_hci_sco_complete(const uint8_t *data, int len) |
346 |
{ |
347 |
len -= HCI_SCO_HDR_SIZE; |
348 |
return len >= 0 && |
349 |
len >= ((struct hci_sco_hdr *) data)->dlen;
|
350 |
} |
351 |
|
352 |
static void usb_bt_handle_reset(USBDevice *dev) |
353 |
{ |
354 |
struct USBBtState *s = (struct USBBtState *) dev->opaque; |
355 |
|
356 |
usb_bt_fifo_reset(&s->evt); |
357 |
usb_bt_fifo_reset(&s->acl); |
358 |
usb_bt_fifo_reset(&s->sco); |
359 |
s->outcmd.len = 0;
|
360 |
s->outacl.len = 0;
|
361 |
s->outsco.len = 0;
|
362 |
} |
363 |
|
364 |
static void usb_bt_handle_control(USBDevice *dev, USBPacket *p, |
365 |
int request, int value, int index, int length, uint8_t *data) |
366 |
{ |
367 |
struct USBBtState *s = (struct USBBtState *) dev->opaque; |
368 |
int ret;
|
369 |
|
370 |
ret = usb_desc_handle_control(dev, p, request, value, index, length, data); |
371 |
if (ret >= 0) { |
372 |
switch (request) {
|
373 |
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
374 |
s->config = 0;
|
375 |
break;
|
376 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
377 |
s->config = 1;
|
378 |
usb_bt_fifo_reset(&s->evt); |
379 |
usb_bt_fifo_reset(&s->acl); |
380 |
usb_bt_fifo_reset(&s->sco); |
381 |
break;
|
382 |
} |
383 |
return;
|
384 |
} |
385 |
|
386 |
switch (request) {
|
387 |
case InterfaceRequest | USB_REQ_GET_STATUS:
|
388 |
case EndpointRequest | USB_REQ_GET_STATUS:
|
389 |
data[0] = 0x00; |
390 |
data[1] = 0x00; |
391 |
p->actual_length = 2;
|
392 |
break;
|
393 |
case InterfaceOutRequest | USB_REQ_CLEAR_FEATURE:
|
394 |
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
|
395 |
goto fail;
|
396 |
case InterfaceOutRequest | USB_REQ_SET_FEATURE:
|
397 |
case EndpointOutRequest | USB_REQ_SET_FEATURE:
|
398 |
goto fail;
|
399 |
break;
|
400 |
case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_DEVICE) << 8): |
401 |
if (s->config)
|
402 |
usb_bt_fifo_out_enqueue(s, &s->outcmd, s->hci->cmd_send, |
403 |
usb_bt_hci_cmd_complete, p); |
404 |
break;
|
405 |
default:
|
406 |
fail:
|
407 |
p->status = USB_RET_STALL; |
408 |
break;
|
409 |
} |
410 |
} |
411 |
|
412 |
static void usb_bt_handle_data(USBDevice *dev, USBPacket *p) |
413 |
{ |
414 |
struct USBBtState *s = (struct USBBtState *) dev->opaque; |
415 |
|
416 |
if (!s->config)
|
417 |
goto fail;
|
418 |
|
419 |
switch (p->pid) {
|
420 |
case USB_TOKEN_IN:
|
421 |
switch (p->ep->nr) {
|
422 |
case USB_EVT_EP:
|
423 |
if (s->evt.len == 0) { |
424 |
p->status = USB_RET_NAK; |
425 |
break;
|
426 |
} |
427 |
usb_bt_fifo_dequeue(&s->evt, p); |
428 |
break;
|
429 |
|
430 |
case USB_ACL_EP:
|
431 |
if (s->evt.len == 0) { |
432 |
p->status = USB_RET_STALL; |
433 |
break;
|
434 |
} |
435 |
usb_bt_fifo_dequeue(&s->acl, p); |
436 |
break;
|
437 |
|
438 |
case USB_SCO_EP:
|
439 |
if (s->evt.len == 0) { |
440 |
p->status = USB_RET_STALL; |
441 |
break;
|
442 |
} |
443 |
usb_bt_fifo_dequeue(&s->sco, p); |
444 |
break;
|
445 |
|
446 |
default:
|
447 |
goto fail;
|
448 |
} |
449 |
break;
|
450 |
|
451 |
case USB_TOKEN_OUT:
|
452 |
switch (p->ep->nr) {
|
453 |
case USB_ACL_EP:
|
454 |
usb_bt_fifo_out_enqueue(s, &s->outacl, s->hci->acl_send, |
455 |
usb_bt_hci_acl_complete, p); |
456 |
break;
|
457 |
|
458 |
case USB_SCO_EP:
|
459 |
usb_bt_fifo_out_enqueue(s, &s->outsco, s->hci->sco_send, |
460 |
usb_bt_hci_sco_complete, p); |
461 |
break;
|
462 |
|
463 |
default:
|
464 |
goto fail;
|
465 |
} |
466 |
break;
|
467 |
|
468 |
default:
|
469 |
fail:
|
470 |
p->status = USB_RET_STALL; |
471 |
break;
|
472 |
} |
473 |
} |
474 |
|
475 |
static void usb_bt_out_hci_packet_event(void *opaque, |
476 |
const uint8_t *data, int len) |
477 |
{ |
478 |
struct USBBtState *s = (struct USBBtState *) opaque; |
479 |
|
480 |
if (s->evt.len == 0) { |
481 |
usb_wakeup(s->intr); |
482 |
} |
483 |
usb_bt_fifo_enqueue(&s->evt, data, len); |
484 |
} |
485 |
|
486 |
static void usb_bt_out_hci_packet_acl(void *opaque, |
487 |
const uint8_t *data, int len) |
488 |
{ |
489 |
struct USBBtState *s = (struct USBBtState *) opaque; |
490 |
|
491 |
usb_bt_fifo_enqueue(&s->acl, data, len); |
492 |
} |
493 |
|
494 |
static void usb_bt_handle_destroy(USBDevice *dev) |
495 |
{ |
496 |
struct USBBtState *s = (struct USBBtState *) dev->opaque; |
497 |
|
498 |
s->hci->opaque = NULL;
|
499 |
s->hci->evt_recv = NULL;
|
500 |
s->hci->acl_recv = NULL;
|
501 |
} |
502 |
|
503 |
static int usb_bt_initfn(USBDevice *dev) |
504 |
{ |
505 |
struct USBBtState *s = DO_UPCAST(struct USBBtState, dev, dev); |
506 |
|
507 |
usb_desc_create_serial(dev); |
508 |
usb_desc_init(dev); |
509 |
s->intr = usb_ep_get(dev, USB_TOKEN_IN, USB_EVT_EP); |
510 |
|
511 |
return 0; |
512 |
} |
513 |
|
514 |
USBDevice *usb_bt_init(USBBus *bus, HCIInfo *hci) |
515 |
{ |
516 |
USBDevice *dev; |
517 |
struct USBBtState *s;
|
518 |
|
519 |
if (!hci)
|
520 |
return NULL; |
521 |
dev = usb_create_simple(bus, "usb-bt-dongle");
|
522 |
if (!dev) {
|
523 |
return NULL; |
524 |
} |
525 |
s = DO_UPCAST(struct USBBtState, dev, dev);
|
526 |
s->dev.opaque = s; |
527 |
|
528 |
s->hci = hci; |
529 |
s->hci->opaque = s; |
530 |
s->hci->evt_recv = usb_bt_out_hci_packet_event; |
531 |
s->hci->acl_recv = usb_bt_out_hci_packet_acl; |
532 |
|
533 |
usb_bt_handle_reset(&s->dev); |
534 |
|
535 |
return dev;
|
536 |
} |
537 |
|
538 |
static const VMStateDescription vmstate_usb_bt = { |
539 |
.name = "usb-bt",
|
540 |
.unmigratable = 1,
|
541 |
}; |
542 |
|
543 |
static void usb_bt_class_initfn(ObjectClass *klass, void *data) |
544 |
{ |
545 |
DeviceClass *dc = DEVICE_CLASS(klass); |
546 |
USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
547 |
|
548 |
uc->init = usb_bt_initfn; |
549 |
uc->product_desc = "QEMU BT dongle";
|
550 |
uc->usb_desc = &desc_bluetooth; |
551 |
uc->handle_reset = usb_bt_handle_reset; |
552 |
uc->handle_control = usb_bt_handle_control; |
553 |
uc->handle_data = usb_bt_handle_data; |
554 |
uc->handle_destroy = usb_bt_handle_destroy; |
555 |
dc->vmsd = &vmstate_usb_bt; |
556 |
} |
557 |
|
558 |
static TypeInfo bt_info = {
|
559 |
.name = "usb-bt-dongle",
|
560 |
.parent = TYPE_USB_DEVICE, |
561 |
.instance_size = sizeof(struct USBBtState), |
562 |
.class_init = usb_bt_class_initfn, |
563 |
}; |
564 |
|
565 |
static void usb_bt_register_types(void) |
566 |
{ |
567 |
type_register_static(&bt_info); |
568 |
} |
569 |
|
570 |
type_init(usb_bt_register_types) |