diff options
Diffstat (limited to 'tools/csr_hci.c')
| -rw-r--r-- | tools/csr_hci.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/tools/csr_hci.c b/tools/csr_hci.c new file mode 100644 index 0000000..6bd37c3 --- /dev/null +++ b/tools/csr_hci.c @@ -0,0 +1,160 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.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 of the License, or + * (at your option) any later version. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <errno.h> +#include <string.h> +#include <sys/socket.h> + +#include <bluetooth/bluetooth.h> +#include <bluetooth/hci.h> +#include <bluetooth/hci_lib.h> + +#include "csr.h" + +static uint16_t seqnum = 0x0000; + +static int dd = -1; + +int csr_open_hci(char *device) +{ + struct hci_dev_info di; + struct hci_version ver; + int dev = 0; + + if (device) { + dev = hci_devid(device); + if (dev < 0) { + fprintf(stderr, "Device not available\n"); + return -1; + } + } + + dd = hci_open_dev(dev); + if (dd < 0) { + fprintf(stderr, "Can't open device hci%d: %s (%d)\n", + dev, strerror(errno), errno); + return -1; + } + + if (hci_devinfo(dev, &di) < 0) { + fprintf(stderr, "Can't get device info for hci%d: %s (%d)\n", + dev, strerror(errno), errno); + hci_close_dev(dd); + return -1; + } + + if (hci_read_local_version(dd, &ver, 1000) < 0) { + fprintf(stderr, "Can't read version info for hci%d: %s (%d)\n", + dev, strerror(errno), errno); + hci_close_dev(dd); + return -1; + } + + if (ver.manufacturer != 10) { + fprintf(stderr, "Unsupported manufacturer\n"); + hci_close_dev(dd); + return -1; + } + + return 0; +} + +static int do_command(uint16_t command, uint16_t seqnum, uint16_t varid, uint8_t *value, uint16_t length) +{ + unsigned char cp[254], rp[254]; + struct hci_request rq; + uint8_t cmd[10]; + uint16_t size; + + size = (length < 8) ? 9 : ((length + 1) / 2) + 5; + + cmd[0] = command & 0xff; + cmd[1] = command >> 8; + cmd[2] = size & 0xff; + cmd[3] = size >> 8; + cmd[4] = seqnum & 0xff; + cmd[5] = seqnum >> 8; + cmd[6] = varid & 0xff; + cmd[7] = varid >> 8; + cmd[8] = 0x00; + cmd[9] = 0x00; + + memset(cp, 0, sizeof(cp)); + cp[0] = 0xc2; + memcpy(cp + 1, cmd, sizeof(cmd)); + memcpy(cp + 11, value, length); + + switch (varid) { + case CSR_VARID_COLD_RESET: + case CSR_VARID_WARM_RESET: + case CSR_VARID_COLD_HALT: + case CSR_VARID_WARM_HALT: + return hci_send_cmd(dd, OGF_VENDOR_CMD, 0x00, (size * 2) + 1, cp); + } + + memset(&rq, 0, sizeof(rq)); + rq.ogf = OGF_VENDOR_CMD; + rq.ocf = 0x00; + rq.event = EVT_VENDOR; + rq.cparam = cp; + rq.clen = (size * 2) + 1; + rq.rparam = rp; + rq.rlen = sizeof(rp); + + if (hci_send_req(dd, &rq, 2000) < 0) + return -1; + + if (rp[0] != 0xc2) { + errno = EIO; + return -1; + } + + if ((rp[9] + (rp[10] << 8)) != 0) { + errno = ENXIO; + return -1; + } + + memcpy(value, rp + 11, length); + + return 0; +} + +int csr_read_hci(uint16_t varid, uint8_t *value, uint16_t length) +{ + return do_command(0x0000, seqnum++, varid, value, length); +} + +int csr_write_hci(uint16_t varid, uint8_t *value, uint16_t length) +{ + return do_command(0x0002, seqnum++, varid, value, length); +} + +void csr_close_hci(void) +{ + hci_close_dev(dd); +} |