root / hw / usb-bt.c @ 1f51470d
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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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|
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struct USBBtState {
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USBDevice dev; |
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struct HCIInfo *hci;
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|
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int config;
|
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|
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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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}; |
| 58 |
|
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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 */ |
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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, |
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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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} |
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}; |
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|
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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 */ |
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.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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}; |
| 238 |
|
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static const USBDesc desc_bluetooth = { |
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.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, |
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}, |
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.full = &desc_device_bluetooth, |
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.str = desc_strings, |
| 250 |
}; |
| 251 |
|
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static void usb_bt_fifo_reset(struct usb_hci_in_fifo_s *fifo) |
| 253 |
{
|
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fifo->dstart = 0;
|
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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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} |
| 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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uint8_t *buf; |
| 266 |
|
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fifo->dlen += len; |
| 268 |
if (off <= DFIFO_LEN_MASK) {
|
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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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exit(-1);
|
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} |
| 274 |
buf = fifo->data + off; |
| 275 |
} else {
|
| 276 |
if (fifo->dlen > fifo->dsize) {
|
| 277 |
fprintf(stderr, "%s: can't alloc %i bytes\n", __FUNCTION__, len);
|
| 278 |
exit(-1);
|
| 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))
|
| 294 |
return USB_RET_STALL;
|
| 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) {
|
| 299 |
fifo->fifo[fifo->start].len -= len; |
| 300 |
fifo->fifo[fifo->start].data += len; |
| 301 |
} else {
|
| 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;
|
| 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_types(void) |
| 553 |
{
|
| 554 |
type_register_static(&bt_info); |
| 555 |
} |
| 556 |
|
| 557 |
type_init(usb_bt_register_types) |