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
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OBJS+=usb.o usb-hub.o usb-linux.o usb-hid.o usb-msd.o usb-wacom.o
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OBJS+=usb-serial.o usb-net.o
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OBJS+=sd.o ssi-sd.o
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OBJS+=bt.o
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OBJS+=bt.o bt-host.o
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ifdef CONFIG_BRLAPI
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OBJS+= baum.o
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@ -166,6 +166,9 @@ vnc.o: vnc.c keymaps.c sdl_keysym.h vnchextile.h d3des.c d3des.h
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curses.o: curses.c keymaps.c curses_keys.h
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$(CC) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<
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bt-host.o: bt-host.c
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$(CC) $(CFLAGS) $(CPPFLAGS) $(CONFIG_BLUEZ_CFLAGS) -c -o $@ $<
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audio/sdlaudio.o: audio/sdlaudio.c
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$(CC) $(CFLAGS) $(CPPFLAGS) $(SDL_CFLAGS) -c -o $@ $<
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@ -524,6 +524,10 @@ CPPFLAGS += $(CONFIG_VNC_TLS_CFLAGS)
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LIBS += $(CONFIG_VNC_TLS_LIBS)
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endif
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ifdef CONFIG_BLUEZ
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LIBS += $(CONFIG_BLUEZ_LIBS)
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endif
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# SCSI layer
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OBJS+= lsi53c895a.o esp.o
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198
bt-host.c
Normal file
198
bt-host.c
Normal file
@ -0,0 +1,198 @@
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/*
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* Wrap a host Bluetooth HCI socket in a struct HCIInfo.
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*
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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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include "qemu-common.h"
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#include "qemu-char.h"
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#include "sysemu.h"
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#include "net.h"
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <sys/uio.h>
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#ifdef CONFIG_BLUEZ
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# include <bluetooth/bluetooth.h>
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# include <bluetooth/hci.h>
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# include <bluetooth/hci_lib.h>
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#else
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# include "hw/bt.h"
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# define HCI_MAX_FRAME_SIZE 1028
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#endif
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struct bt_host_hci_s {
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struct HCIInfo hci;
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int fd;
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uint8_t hdr[HCI_MAX_FRAME_SIZE];
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int len;
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};
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static void bt_host_send(struct HCIInfo *hci,
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int type, const uint8_t *data, int len)
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{
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struct bt_host_hci_s *s = (struct bt_host_hci_s *) hci;
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uint8_t pkt = type;
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struct iovec iv[2];
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int ret;
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iv[0].iov_base = &pkt;
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iv[0].iov_len = 1;
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iv[1].iov_base = (void *) data;
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iv[1].iov_len = len;
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while ((ret = writev(s->fd, iv, 2)) < 0)
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if (errno != EAGAIN && errno != EINTR) {
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fprintf(stderr, "qemu: error %i writing bluetooth packet.\n",
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errno);
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return;
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}
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}
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static void bt_host_cmd(struct HCIInfo *hci, const uint8_t *data, int len)
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{
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bt_host_send(hci, HCI_COMMAND_PKT, data, len);
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}
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static void bt_host_acl(struct HCIInfo *hci, const uint8_t *data, int len)
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{
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bt_host_send(hci, HCI_ACLDATA_PKT, data, len);
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}
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static void bt_host_sco(struct HCIInfo *hci, const uint8_t *data, int len)
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{
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bt_host_send(hci, HCI_SCODATA_PKT, data, len);
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}
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static int bt_host_read_poll(void *opaque)
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{
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struct bt_host_hci_s *s = (struct bt_host_hci_s *) opaque;
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return !!s->hci.evt_recv;
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}
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static void bt_host_read(void *opaque)
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{
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struct bt_host_hci_s *s = (struct bt_host_hci_s *) opaque;
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uint8_t *pkt;
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int pktlen;
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/* Seems that we can't read only the header first and then the amount
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* of data indicated in the header because Linux will discard everything
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* that's not been read in one go. */
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s->len = read(s->fd, s->hdr, sizeof(s->hdr));
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if (s->len < 0) {
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fprintf(stderr, "qemu: error %i reading HCI frame\n", errno);
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return;
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}
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pkt = s->hdr;
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while (s->len --)
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switch (*pkt ++) {
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case HCI_EVENT_PKT:
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if (s->len < 2)
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goto bad_pkt;
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pktlen = MIN(pkt[1] + 2, s->len);
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s->hci.evt_recv(s->hci.opaque, pkt, pktlen);
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s->len -= pktlen;
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pkt += pktlen;
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/* TODO: if this is an Inquiry Result event, it's also
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* interpreted by Linux kernel before we received it, possibly
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* we should clean the kernel Inquiry cache through
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* ioctl(s->fd, HCI_INQUIRY, ...). */
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break;
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case HCI_ACLDATA_PKT:
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if (s->len < 4)
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goto bad_pkt;
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pktlen = MIN(((pkt[3] << 8) | pkt[2]) + 4, s->len);
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s->hci.acl_recv(s->hci.opaque, pkt, pktlen);
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s->len -= pktlen;
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pkt += pktlen;
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break;
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case HCI_SCODATA_PKT:
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if (s->len < 3)
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goto bad_pkt;
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pktlen = MIN(pkt[2] + 3, s->len);
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s->len -= pktlen;
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pkt += pktlen;
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default:
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bad_pkt:
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fprintf(stderr, "qemu: bad HCI packet type %02x\n", pkt[-1]);
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}
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}
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static int bt_host_bdaddr_set(struct HCIInfo *hci, const uint8_t *bd_addr)
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{
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return -ENOTSUP;
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}
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struct HCIInfo *bt_host_hci(const char *id)
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{
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struct bt_host_hci_s *s;
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int fd = -1;
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#ifdef CONFIG_BLUEZ
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int dev_id = hci_devid(id);
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struct hci_filter flt;
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if (dev_id < 0) {
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fprintf(stderr, "qemu: `%s' not available\n", id);
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return 0;
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}
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fd = hci_open_dev(dev_id);
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/* XXX: can we ensure nobody else has the device opened? */
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#endif
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if (fd < 0) {
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fprintf(stderr, "qemu: Can't open `%s': %s (%i)\n",
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id, strerror(errno), errno);
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return 0;
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}
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#ifdef CONFIG_BLUEZ
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hci_filter_clear(&flt);
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hci_filter_all_ptypes(&flt);
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hci_filter_all_events(&flt);
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if (setsockopt(fd, SOL_HCI, HCI_FILTER, &flt, sizeof(flt)) < 0) {
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fprintf(stderr, "qemu: Can't set HCI filter on socket (%i)\n", errno);
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return 0;
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}
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#endif
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s = qemu_mallocz(sizeof(struct bt_host_hci_s));
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s->fd = fd;
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s->hci.cmd_send = bt_host_cmd;
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s->hci.sco_send = bt_host_sco;
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s->hci.acl_send = bt_host_acl;
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s->hci.bdaddr_set = bt_host_bdaddr_set;
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qemu_set_fd_handler2(s->fd, bt_host_read_poll, bt_host_read, 0, s);
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return &s->hci;
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}
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20
configure
vendored
20
configure
vendored
@ -110,6 +110,7 @@ curses="yes"
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aio="yes"
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nptl="yes"
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mixemu="no"
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bluez="yes"
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signalfd="no"
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eventfd="no"
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@ -293,6 +294,8 @@ for opt do
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;;
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--disable-brlapi) brlapi="no"
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;;
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--disable-bluez) bluez="no"
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;;
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--enable-profiler) profiler="yes"
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;;
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--enable-cocoa)
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@ -429,6 +432,7 @@ echo " --enable-mixemu enable mixer emulation"
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echo " --disable-brlapi disable BrlAPI"
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echo " --disable-vnc-tls disable TLS encryption for VNC server"
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echo " --disable-curses disable curses output"
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echo " --disable-bluez disable bluez stack connectivity"
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echo " --disable-nptl disable usermode NPTL support"
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echo " --enable-system enable all system emulation targets"
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echo " --disable-system disable all system emulation targets"
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@ -890,6 +894,16 @@ EOF
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fi
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fi # test "$curses"
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##########################################
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# bluez support probe
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if test "$bluez" = "yes" ; then
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`pkg-config bluez` || bluez="no"
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fi
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if test "$bluez" = "yes" ; then
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bluez_cflags=`pkg-config --cflags bluez`
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bluez_libs=`pkg-config --libs bluez`
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fi
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##########################################
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# AIO probe
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if test "$aio" = "yes" ; then
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@ -1254,6 +1268,12 @@ if test "$brlapi" = "yes" ; then
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echo "#define CONFIG_BRLAPI 1" >> $config_h
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echo "BRLAPI_LIBS=-lbrlapi" >> $config_mak
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fi
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if test "$bluez" = "yes" ; then
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echo "CONFIG_BLUEZ=yes" >> $config_mak
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echo "CONFIG_BLUEZ_CFLAGS=$bluez_cflags" >> $config_mak
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echo "CONFIG_BLUEZ_LIBS=$bluez_libs" >> $config_mak
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echo "#define CONFIG_BLUEZ 1" >> $config_h
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fi
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if test "$aio" = "yes" ; then
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echo "#define CONFIG_AIO 1" >> $config_h
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echo "CONFIG_AIO=yes" >> $config_mak
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