Implement a HCI passthrough to host.
This allows using a host's physical HCI as one of the HCIs attached to the virtual machine. This brings various limitations because not all commands/events are passed through by Linux kernel, some are interpreted by the host's kernel for a speed gain. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5344 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog
parent
58a26b477e
commit
fb599c9a03
5
Makefile
5
Makefile
|
|
@ -81,7 +81,7 @@ OBJS+=scsi-generic.o
|
|||
OBJS+=usb.o usb-hub.o usb-linux.o usb-hid.o usb-msd.o usb-wacom.o
|
||||
OBJS+=usb-serial.o usb-net.o
|
||||
OBJS+=sd.o ssi-sd.o
|
||||
OBJS+=bt.o
|
||||
OBJS+=bt.o bt-host.o
|
||||
|
||||
ifdef CONFIG_BRLAPI
|
||||
OBJS+= baum.o
|
||||
|
|
@ -166,6 +166,9 @@ vnc.o: vnc.c keymaps.c sdl_keysym.h vnchextile.h d3des.c d3des.h
|
|||
curses.o: curses.c keymaps.c curses_keys.h
|
||||
$(CC) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<
|
||||
|
||||
bt-host.o: bt-host.c
|
||||
$(CC) $(CFLAGS) $(CPPFLAGS) $(CONFIG_BLUEZ_CFLAGS) -c -o $@ $<
|
||||
|
||||
audio/sdlaudio.o: audio/sdlaudio.c
|
||||
$(CC) $(CFLAGS) $(CPPFLAGS) $(SDL_CFLAGS) -c -o $@ $<
|
||||
|
||||
|
|
|
|||
|
|
@ -524,6 +524,10 @@ CPPFLAGS += $(CONFIG_VNC_TLS_CFLAGS)
|
|||
LIBS += $(CONFIG_VNC_TLS_LIBS)
|
||||
endif
|
||||
|
||||
ifdef CONFIG_BLUEZ
|
||||
LIBS += $(CONFIG_BLUEZ_LIBS)
|
||||
endif
|
||||
|
||||
# SCSI layer
|
||||
OBJS+= lsi53c895a.o esp.o
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,198 @@
|
|||
/*
|
||||
* Wrap a host Bluetooth HCI socket in a struct HCIInfo.
|
||||
*
|
||||
* Copyright (C) 2008 Andrzej Zaborowski <balrog@zabor.org>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||
* MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include "qemu-common.h"
|
||||
#include "qemu-char.h"
|
||||
#include "sysemu.h"
|
||||
#include "net.h"
|
||||
|
||||
#include <errno.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/uio.h>
|
||||
#ifdef CONFIG_BLUEZ
|
||||
# include <bluetooth/bluetooth.h>
|
||||
# include <bluetooth/hci.h>
|
||||
# include <bluetooth/hci_lib.h>
|
||||
#else
|
||||
# include "hw/bt.h"
|
||||
# define HCI_MAX_FRAME_SIZE 1028
|
||||
#endif
|
||||
|
||||
struct bt_host_hci_s {
|
||||
struct HCIInfo hci;
|
||||
int fd;
|
||||
|
||||
uint8_t hdr[HCI_MAX_FRAME_SIZE];
|
||||
int len;
|
||||
};
|
||||
|
||||
static void bt_host_send(struct HCIInfo *hci,
|
||||
int type, const uint8_t *data, int len)
|
||||
{
|
||||
struct bt_host_hci_s *s = (struct bt_host_hci_s *) hci;
|
||||
uint8_t pkt = type;
|
||||
struct iovec iv[2];
|
||||
int ret;
|
||||
|
||||
iv[0].iov_base = &pkt;
|
||||
iv[0].iov_len = 1;
|
||||
iv[1].iov_base = (void *) data;
|
||||
iv[1].iov_len = len;
|
||||
|
||||
while ((ret = writev(s->fd, iv, 2)) < 0)
|
||||
if (errno != EAGAIN && errno != EINTR) {
|
||||
fprintf(stderr, "qemu: error %i writing bluetooth packet.\n",
|
||||
errno);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static void bt_host_cmd(struct HCIInfo *hci, const uint8_t *data, int len)
|
||||
{
|
||||
bt_host_send(hci, HCI_COMMAND_PKT, data, len);
|
||||
}
|
||||
|
||||
static void bt_host_acl(struct HCIInfo *hci, const uint8_t *data, int len)
|
||||
{
|
||||
bt_host_send(hci, HCI_ACLDATA_PKT, data, len);
|
||||
}
|
||||
|
||||
static void bt_host_sco(struct HCIInfo *hci, const uint8_t *data, int len)
|
||||
{
|
||||
bt_host_send(hci, HCI_SCODATA_PKT, data, len);
|
||||
}
|
||||
|
||||
static int bt_host_read_poll(void *opaque)
|
||||
{
|
||||
struct bt_host_hci_s *s = (struct bt_host_hci_s *) opaque;
|
||||
|
||||
return !!s->hci.evt_recv;
|
||||
}
|
||||
|
||||
static void bt_host_read(void *opaque)
|
||||
{
|
||||
struct bt_host_hci_s *s = (struct bt_host_hci_s *) opaque;
|
||||
uint8_t *pkt;
|
||||
int pktlen;
|
||||
|
||||
/* Seems that we can't read only the header first and then the amount
|
||||
* of data indicated in the header because Linux will discard everything
|
||||
* that's not been read in one go. */
|
||||
s->len = read(s->fd, s->hdr, sizeof(s->hdr));
|
||||
|
||||
if (s->len < 0) {
|
||||
fprintf(stderr, "qemu: error %i reading HCI frame\n", errno);
|
||||
return;
|
||||
}
|
||||
|
||||
pkt = s->hdr;
|
||||
while (s->len --)
|
||||
switch (*pkt ++) {
|
||||
case HCI_EVENT_PKT:
|
||||
if (s->len < 2)
|
||||
goto bad_pkt;
|
||||
|
||||
pktlen = MIN(pkt[1] + 2, s->len);
|
||||
s->hci.evt_recv(s->hci.opaque, pkt, pktlen);
|
||||
s->len -= pktlen;
|
||||
pkt += pktlen;
|
||||
|
||||
/* TODO: if this is an Inquiry Result event, it's also
|
||||
* interpreted by Linux kernel before we received it, possibly
|
||||
* we should clean the kernel Inquiry cache through
|
||||
* ioctl(s->fd, HCI_INQUIRY, ...). */
|
||||
break;
|
||||
|
||||
case HCI_ACLDATA_PKT:
|
||||
if (s->len < 4)
|
||||
goto bad_pkt;
|
||||
|
||||
pktlen = MIN(((pkt[3] << 8) | pkt[2]) + 4, s->len);
|
||||
s->hci.acl_recv(s->hci.opaque, pkt, pktlen);
|
||||
s->len -= pktlen;
|
||||
pkt += pktlen;
|
||||
break;
|
||||
|
||||
case HCI_SCODATA_PKT:
|
||||
if (s->len < 3)
|
||||
goto bad_pkt;
|
||||
|
||||
pktlen = MIN(pkt[2] + 3, s->len);
|
||||
s->len -= pktlen;
|
||||
pkt += pktlen;
|
||||
|
||||
default:
|
||||
bad_pkt:
|
||||
fprintf(stderr, "qemu: bad HCI packet type %02x\n", pkt[-1]);
|
||||
}
|
||||
}
|
||||
|
||||
static int bt_host_bdaddr_set(struct HCIInfo *hci, const uint8_t *bd_addr)
|
||||
{
|
||||
return -ENOTSUP;
|
||||
}
|
||||
|
||||
struct HCIInfo *bt_host_hci(const char *id)
|
||||
{
|
||||
struct bt_host_hci_s *s;
|
||||
int fd = -1;
|
||||
#ifdef CONFIG_BLUEZ
|
||||
int dev_id = hci_devid(id);
|
||||
struct hci_filter flt;
|
||||
|
||||
if (dev_id < 0) {
|
||||
fprintf(stderr, "qemu: `%s' not available\n", id);
|
||||
return 0;
|
||||
}
|
||||
|
||||
fd = hci_open_dev(dev_id);
|
||||
|
||||
/* XXX: can we ensure nobody else has the device opened? */
|
||||
#endif
|
||||
|
||||
if (fd < 0) {
|
||||
fprintf(stderr, "qemu: Can't open `%s': %s (%i)\n",
|
||||
id, strerror(errno), errno);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_BLUEZ
|
||||
hci_filter_clear(&flt);
|
||||
hci_filter_all_ptypes(&flt);
|
||||
hci_filter_all_events(&flt);
|
||||
|
||||
if (setsockopt(fd, SOL_HCI, HCI_FILTER, &flt, sizeof(flt)) < 0) {
|
||||
fprintf(stderr, "qemu: Can't set HCI filter on socket (%i)\n", errno);
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
s = qemu_mallocz(sizeof(struct bt_host_hci_s));
|
||||
s->fd = fd;
|
||||
s->hci.cmd_send = bt_host_cmd;
|
||||
s->hci.sco_send = bt_host_sco;
|
||||
s->hci.acl_send = bt_host_acl;
|
||||
s->hci.bdaddr_set = bt_host_bdaddr_set;
|
||||
|
||||
qemu_set_fd_handler2(s->fd, bt_host_read_poll, bt_host_read, 0, s);
|
||||
|
||||
return &s->hci;
|
||||
}
|
||||
|
|
@ -110,6 +110,7 @@ curses="yes"
|
|||
aio="yes"
|
||||
nptl="yes"
|
||||
mixemu="no"
|
||||
bluez="yes"
|
||||
signalfd="no"
|
||||
eventfd="no"
|
||||
|
||||
|
|
@ -293,6 +294,8 @@ for opt do
|
|||
;;
|
||||
--disable-brlapi) brlapi="no"
|
||||
;;
|
||||
--disable-bluez) bluez="no"
|
||||
;;
|
||||
--enable-profiler) profiler="yes"
|
||||
;;
|
||||
--enable-cocoa)
|
||||
|
|
@ -429,6 +432,7 @@ echo " --enable-mixemu enable mixer emulation"
|
|||
echo " --disable-brlapi disable BrlAPI"
|
||||
echo " --disable-vnc-tls disable TLS encryption for VNC server"
|
||||
echo " --disable-curses disable curses output"
|
||||
echo " --disable-bluez disable bluez stack connectivity"
|
||||
echo " --disable-nptl disable usermode NPTL support"
|
||||
echo " --enable-system enable all system emulation targets"
|
||||
echo " --disable-system disable all system emulation targets"
|
||||
|
|
@ -890,6 +894,16 @@ EOF
|
|||
fi
|
||||
fi # test "$curses"
|
||||
|
||||
##########################################
|
||||
# bluez support probe
|
||||
if test "$bluez" = "yes" ; then
|
||||
`pkg-config bluez` || bluez="no"
|
||||
fi
|
||||
if test "$bluez" = "yes" ; then
|
||||
bluez_cflags=`pkg-config --cflags bluez`
|
||||
bluez_libs=`pkg-config --libs bluez`
|
||||
fi
|
||||
|
||||
##########################################
|
||||
# AIO probe
|
||||
if test "$aio" = "yes" ; then
|
||||
|
|
@ -1254,6 +1268,12 @@ if test "$brlapi" = "yes" ; then
|
|||
echo "#define CONFIG_BRLAPI 1" >> $config_h
|
||||
echo "BRLAPI_LIBS=-lbrlapi" >> $config_mak
|
||||
fi
|
||||
if test "$bluez" = "yes" ; then
|
||||
echo "CONFIG_BLUEZ=yes" >> $config_mak
|
||||
echo "CONFIG_BLUEZ_CFLAGS=$bluez_cflags" >> $config_mak
|
||||
echo "CONFIG_BLUEZ_LIBS=$bluez_libs" >> $config_mak
|
||||
echo "#define CONFIG_BLUEZ 1" >> $config_h
|
||||
fi
|
||||
if test "$aio" = "yes" ; then
|
||||
echo "#define CONFIG_AIO 1" >> $config_h
|
||||
echo "CONFIG_AIO=yes" >> $config_mak
|
||||
|
|
|
|||
Reference in New Issue