diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | bt-vhci.c | 172 | ||||
| -rw-r--r-- | hw/bt.h | 8 |
3 files changed, 181 insertions, 1 deletions
@@ -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 bt-host.o bt-l2cap.o bt-sdp.o bt-hci.o bt-hid.o +OBJS+=bt.o bt-host.o bt-vhci.o bt-l2cap.o bt-sdp.o bt-hci.o bt-hid.o ifdef CONFIG_BRLAPI OBJS+= baum.o diff --git a/bt-vhci.c b/bt-vhci.c new file mode 100644 index 0000000000..146939313d --- /dev/null +++ b/bt-vhci.c @@ -0,0 +1,172 @@ +/* + * Support for host VHCIs inside qemu scatternets. + * + * 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 "hw/bt.h" + +#include <sys/uio.h> + +#define VHCI_DEV "/dev/vhci" +#define VHCI_UDEV "/dev/hci_vhci" + +struct bt_vhci_s { + int fd; + struct HCIInfo *info; + + uint8_t hdr[4096]; + int len; +}; + +static void vhci_read(void *opaque) +{ + struct bt_vhci_s *s = (struct bt_vhci_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 the PDU\n", errno); + return; + } + + pkt = s->hdr; + while (s->len --) + switch (*pkt ++) { + case HCI_COMMAND_PKT: + if (s->len < 3) + goto bad_pkt; + + pktlen = MIN(pkt[2] + 3, s->len); + s->info->cmd_send(s->info, pkt, pktlen); + s->len -= pktlen; + pkt += pktlen; + break; + + case HCI_ACLDATA_PKT: + if (s->len < 4) + goto bad_pkt; + + pktlen = MIN(((pkt[3] << 8) | pkt[2]) + 4, s->len); + s->info->acl_send(s->info, 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->info->sco_send(s->info, pkt, pktlen); + s->len -= pktlen; + pkt += pktlen; + break; + + default: + bad_pkt: + fprintf(stderr, "qemu: bad HCI packet type %02x\n", pkt[-1]); + } +} + +static void vhci_host_send(void *opaque, + int type, const uint8_t *data, int len) +{ + struct bt_vhci_s *s = (struct bt_vhci_s *) opaque; +#if 0 + uint8_t pkt = type; + struct iovec iv[2]; + + iv[0].iov_base = &pkt; + iv[0].iov_len = 1; + iv[1].iov_base = (void *) data; + iv[1].iov_len = len; + + while (writev(s->fd, iv, 2) < 0) + if (errno != EAGAIN && errno != EINTR) { + fprintf(stderr, "qemu: error %i writing bluetooth packet.\n", + errno); + return; + } +#else + /* Apparently VHCI wants us to write everything in one chunk :-( */ + static uint8_t buf[4096]; + + buf[0] = type; + memcpy(buf + 1, data, len); + + while (write(s->fd, buf, len + 1) < 0) + if (errno != EAGAIN && errno != EINTR) { + fprintf(stderr, "qemu: error %i writing bluetooth packet.\n", + errno); + return; + } +#endif +} + +static void vhci_out_hci_packet_event(void *opaque, + const uint8_t *data, int len) +{ + vhci_host_send(opaque, HCI_EVENT_PKT, data, len); +} + +static void vhci_out_hci_packet_acl(void *opaque, + const uint8_t *data, int len) +{ + vhci_host_send(opaque, HCI_ACLDATA_PKT, data, len); +} + +void bt_vhci_init(struct HCIInfo *info) +{ + struct bt_vhci_s *s; + int err[2]; + int fd; + + fd = open(VHCI_DEV, O_RDWR); + err[0] = errno; + if (fd < 0) { + fd = open(VHCI_UDEV, O_RDWR); + err[1] = errno; + } + + if (fd < 0) { + fprintf(stderr, "qemu: Can't open `%s': %s (%i)\n", + VHCI_DEV, strerror(err[0]), err[0]); + fprintf(stderr, "qemu: Can't open `%s': %s (%i)\n", + VHCI_UDEV, strerror(err[1]), err[1]); + exit(-1); + } + + s = qemu_mallocz(sizeof(struct bt_vhci_s)); + s->fd = fd; + s->info = info ?: qemu_next_hci(); + s->info->opaque = s; + s->info->evt_recv = vhci_out_hci_packet_event; + s->info->acl_recv = vhci_out_hci_packet_acl; + + qemu_set_fd_handler(s->fd, vhci_read, 0, s); +} @@ -115,6 +115,9 @@ struct HCIInfo *bt_new_hci(struct bt_scatternet_s *net); /* bt-host.c */ struct HCIInfo *bt_host_hci(const char *id); +/* bt-vhci.c */ +void bt_vhci_init(struct HCIInfo *info); + /* bt-hci-csr.c */ enum { csrhci_pin_reset, @@ -167,6 +170,11 @@ enum bt_l2cap_psm_predef { /* bt-sdp.c */ void bt_l2cap_sdp_init(struct bt_l2cap_device_s *dev); +/* bt-hid.c */ +struct bt_device_s *bt_mouse_init(struct bt_scatternet_s *net); +struct bt_device_s *bt_tablet_init(struct bt_scatternet_s *net); +struct bt_device_s *bt_keyboard_init(struct bt_scatternet_s *net); + /* Link Management Protocol layer defines */ #define LLID_ACLU_CONT 0x1 |