提交 fb599c9a 编写于 作者: B balrog

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
上级 58a26b47
......@@ -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
......
/*
* 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
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册