571 lines
17 KiB
C
571 lines
17 KiB
C
/*
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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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#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,
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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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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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};
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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,
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};
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static void usb_bt_fifo_reset(struct usb_hci_in_fifo_s *fifo)
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{
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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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}
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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;
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fifo->dlen += len;
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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) {
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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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}
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buf = fifo->data + off;
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} 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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}
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buf = fifo->data + off - fifo->dsize;
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}
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off = (fifo->start + fifo->len ++) & CFIFO_LEN_MASK;
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fifo->fifo[off].data = memcpy(buf, data, len);
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fifo->fifo[off].len = len;
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}
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static inline void usb_bt_fifo_dequeue(struct usb_hci_in_fifo_s *fifo,
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USBPacket *p)
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{
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int len;
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assert(fifo->len != 0);
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len = MIN(p->iov.size, fifo->fifo[fifo->start].len);
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usb_packet_copy(p, fifo->fifo[fifo->start].data, len);
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if (len == p->iov.size) {
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fifo->fifo[fifo->start].len -= len;
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fifo->fifo[fifo->start].data += len;
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} else {
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fifo->start ++;
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fifo->start &= CFIFO_LEN_MASK;
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fifo->len --;
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}
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fifo->dstart += len;
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fifo->dlen -= len;
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if (fifo->dstart >= fifo->dsize) {
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fifo->dstart = 0;
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fifo->dsize = DFIFO_LEN_MASK + 1;
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}
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}
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static inline void usb_bt_fifo_out_enqueue(struct USBBtState *s,
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struct usb_hci_out_fifo_s *fifo,
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void (*send)(struct HCIInfo *, const uint8_t *, int),
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int (*complete)(const uint8_t *, int),
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USBPacket *p)
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{
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usb_packet_copy(p, fifo->data + fifo->len, p->iov.size);
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fifo->len += p->iov.size;
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if (complete(fifo->data, fifo->len)) {
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send(s->hci, fifo->data, fifo->len);
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fifo->len = 0;
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}
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/* TODO: do we need to loop? */
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}
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static int usb_bt_hci_cmd_complete(const uint8_t *data, int len)
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{
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len -= HCI_COMMAND_HDR_SIZE;
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return len >= 0 &&
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len >= ((struct hci_command_hdr *) data)->plen;
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}
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static int usb_bt_hci_acl_complete(const uint8_t *data, int len)
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{
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len -= HCI_ACL_HDR_SIZE;
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return len >= 0 &&
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len >= le16_to_cpu(((struct hci_acl_hdr *) data)->dlen);
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}
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static int usb_bt_hci_sco_complete(const uint8_t *data, int len)
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{
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len -= HCI_SCO_HDR_SIZE;
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return len >= 0 &&
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len >= ((struct hci_sco_hdr *) data)->dlen;
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}
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static void usb_bt_handle_reset(USBDevice *dev)
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{
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struct USBBtState *s = (struct USBBtState *) dev->opaque;
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usb_bt_fifo_reset(&s->evt);
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usb_bt_fifo_reset(&s->acl);
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usb_bt_fifo_reset(&s->sco);
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s->outcmd.len = 0;
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s->outacl.len = 0;
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s->outsco.len = 0;
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}
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static void usb_bt_handle_control(USBDevice *dev, USBPacket *p,
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int request, int value, int index, int length, uint8_t *data)
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{
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struct USBBtState *s = (struct USBBtState *) dev->opaque;
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int ret;
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ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
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if (ret >= 0) {
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switch (request) {
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case DeviceRequest | USB_REQ_GET_CONFIGURATION:
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s->config = 0;
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break;
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case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
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s->config = 1;
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usb_bt_fifo_reset(&s->evt);
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usb_bt_fifo_reset(&s->acl);
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usb_bt_fifo_reset(&s->sco);
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break;
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}
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return;
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}
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switch (request) {
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case InterfaceRequest | USB_REQ_GET_STATUS:
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case EndpointRequest | USB_REQ_GET_STATUS:
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data[0] = 0x00;
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data[1] = 0x00;
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p->actual_length = 2;
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break;
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case InterfaceOutRequest | USB_REQ_CLEAR_FEATURE:
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case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
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goto fail;
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case InterfaceOutRequest | USB_REQ_SET_FEATURE:
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case EndpointOutRequest | USB_REQ_SET_FEATURE:
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goto fail;
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break;
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case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_DEVICE) << 8):
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if (s->config)
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usb_bt_fifo_out_enqueue(s, &s->outcmd, s->hci->cmd_send,
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usb_bt_hci_cmd_complete, p);
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break;
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default:
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fail:
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p->status = USB_RET_STALL;
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break;
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}
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}
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static void usb_bt_handle_data(USBDevice *dev, USBPacket *p)
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{
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struct USBBtState *s = (struct USBBtState *) dev->opaque;
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if (!s->config)
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goto fail;
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switch (p->pid) {
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case USB_TOKEN_IN:
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switch (p->ep->nr) {
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case USB_EVT_EP:
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if (s->evt.len == 0) {
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p->status = USB_RET_NAK;
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break;
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}
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usb_bt_fifo_dequeue(&s->evt, p);
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break;
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case USB_ACL_EP:
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if (s->evt.len == 0) {
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p->status = USB_RET_STALL;
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break;
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}
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usb_bt_fifo_dequeue(&s->acl, p);
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break;
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case USB_SCO_EP:
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if (s->evt.len == 0) {
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p->status = USB_RET_STALL;
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break;
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}
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usb_bt_fifo_dequeue(&s->sco, p);
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break;
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default:
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goto fail;
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}
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break;
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case USB_TOKEN_OUT:
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switch (p->ep->nr) {
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case USB_ACL_EP:
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usb_bt_fifo_out_enqueue(s, &s->outacl, s->hci->acl_send,
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usb_bt_hci_acl_complete, p);
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break;
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case USB_SCO_EP:
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usb_bt_fifo_out_enqueue(s, &s->outsco, s->hci->sco_send,
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usb_bt_hci_sco_complete, p);
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break;
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default:
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goto fail;
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}
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break;
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default:
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fail:
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p->status = USB_RET_STALL;
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break;
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}
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}
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static void usb_bt_out_hci_packet_event(void *opaque,
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const uint8_t *data, int len)
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{
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struct USBBtState *s = (struct USBBtState *) opaque;
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if (s->evt.len == 0) {
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usb_wakeup(s->intr);
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}
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usb_bt_fifo_enqueue(&s->evt, data, len);
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}
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static void usb_bt_out_hci_packet_acl(void *opaque,
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const uint8_t *data, int len)
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{
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struct USBBtState *s = (struct USBBtState *) opaque;
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usb_bt_fifo_enqueue(&s->acl, data, len);
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}
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static void usb_bt_handle_destroy(USBDevice *dev)
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{
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struct USBBtState *s = (struct USBBtState *) dev->opaque;
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s->hci->opaque = NULL;
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s->hci->evt_recv = NULL;
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s->hci->acl_recv = NULL;
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}
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static int usb_bt_initfn(USBDevice *dev)
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{
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struct USBBtState *s = DO_UPCAST(struct USBBtState, dev, dev);
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usb_desc_create_serial(dev);
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usb_desc_init(dev);
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s->intr = usb_ep_get(dev, USB_TOKEN_IN, USB_EVT_EP);
|
|
|
|
return 0;
|
|
}
|
|
|
|
USBDevice *usb_bt_init(USBBus *bus, HCIInfo *hci)
|
|
{
|
|
USBDevice *dev;
|
|
struct USBBtState *s;
|
|
|
|
if (!hci)
|
|
return NULL;
|
|
dev = usb_create_simple(bus, "usb-bt-dongle");
|
|
if (!dev) {
|
|
return NULL;
|
|
}
|
|
s = DO_UPCAST(struct USBBtState, dev, dev);
|
|
s->dev.opaque = s;
|
|
|
|
s->hci = hci;
|
|
s->hci->opaque = s;
|
|
s->hci->evt_recv = usb_bt_out_hci_packet_event;
|
|
s->hci->acl_recv = usb_bt_out_hci_packet_acl;
|
|
|
|
usb_bt_handle_reset(&s->dev);
|
|
|
|
return dev;
|
|
}
|
|
|
|
static const VMStateDescription vmstate_usb_bt = {
|
|
.name = "usb-bt",
|
|
.unmigratable = 1,
|
|
};
|
|
|
|
static void usb_bt_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
|
|
|
|
uc->init = usb_bt_initfn;
|
|
uc->product_desc = "QEMU BT dongle";
|
|
uc->usb_desc = &desc_bluetooth;
|
|
uc->handle_reset = usb_bt_handle_reset;
|
|
uc->handle_control = usb_bt_handle_control;
|
|
uc->handle_data = usb_bt_handle_data;
|
|
uc->handle_destroy = usb_bt_handle_destroy;
|
|
dc->vmsd = &vmstate_usb_bt;
|
|
}
|
|
|
|
static TypeInfo bt_info = {
|
|
.name = "usb-bt-dongle",
|
|
.parent = TYPE_USB_DEVICE,
|
|
.instance_size = sizeof(struct USBBtState),
|
|
.class_init = usb_bt_class_initfn,
|
|
};
|
|
|
|
static void usb_bt_register_types(void)
|
|
{
|
|
type_register_static(&bt_info);
|
|
}
|
|
|
|
type_init(usb_bt_register_types)
|