| /********************************************************************** |
| * |
| * Copyright (C) 2015 Intel Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| **********************************************************************/ |
| |
| #define LOG_TAG "bt_vendor" |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <poll.h> |
| #include <stdbool.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include <sys/ioctl.h> |
| #include <sys/socket.h> |
| |
| #include "hci/include/bt_vendor_lib.h" |
| #include "osi/include/compat.h" |
| #include "osi/include/log.h" |
| #include "osi/include/osi.h" |
| #include "osi/include/properties.h" |
| |
| #define BTPROTO_HCI 1 |
| #define HCI_CHANNEL_USER 1 |
| #define HCI_CHANNEL_CONTROL 3 |
| #define HCI_DEV_NONE 0xffff |
| |
| #define RFKILL_TYPE_BLUETOOTH 2 |
| #define RFKILL_OP_CHANGE_ALL 3 |
| |
| #define MGMT_OP_INDEX_LIST 0x0003 |
| #define MGMT_EV_INDEX_ADDED 0x0004 |
| #define MGMT_EV_COMMAND_COMP 0x0001 |
| #define MGMT_EV_SIZE_MAX 1024 |
| #define MGMT_EV_POLL_TIMEOUT 3000 /* 3000ms */ |
| |
| #define IOCTL_HCIDEVDOWN _IOW('H', 202, int) |
| |
| struct sockaddr_hci { |
| sa_family_t hci_family; |
| unsigned short hci_dev; |
| unsigned short hci_channel; |
| }; |
| |
| struct rfkill_event { |
| uint32_t idx; |
| uint8_t type; |
| uint8_t op; |
| uint8_t soft, hard; |
| } __attribute__((packed)); |
| |
| struct mgmt_pkt { |
| uint16_t opcode; |
| uint16_t index; |
| uint16_t len; |
| uint8_t data[MGMT_EV_SIZE_MAX]; |
| } __attribute__((packed)); |
| |
| struct mgmt_event_read_index { |
| uint16_t cc_opcode; |
| uint8_t status; |
| uint16_t num_intf; |
| uint16_t index[0]; |
| } __attribute__((packed)); |
| |
| static const bt_vendor_callbacks_t* bt_vendor_callbacks; |
| static unsigned char bt_vendor_local_bdaddr[6]; |
| static int bt_vendor_fd = -1; |
| static int hci_interface; |
| static int rfkill_en; |
| static int bt_hwcfg_en; |
| |
| static int bt_vendor_init(const bt_vendor_callbacks_t* p_cb, |
| unsigned char* local_bdaddr) { |
| char prop_value[PROPERTY_VALUE_MAX]; |
| |
| LOG_INFO(LOG_TAG, "%s", __func__); |
| |
| if (p_cb == NULL) { |
| LOG_ERROR(LOG_TAG, "init failed with no user callbacks!"); |
| return -1; |
| } |
| |
| bt_vendor_callbacks = p_cb; |
| |
| memcpy(bt_vendor_local_bdaddr, local_bdaddr, sizeof(bt_vendor_local_bdaddr)); |
| |
| osi_property_get("bluetooth.interface", prop_value, "0"); |
| |
| errno = 0; |
| if (memcmp(prop_value, "hci", 3)) |
| hci_interface = strtol(prop_value, NULL, 10); |
| else |
| hci_interface = strtol(prop_value + 3, NULL, 10); |
| if (errno) hci_interface = 0; |
| |
| LOG_INFO(LOG_TAG, "Using interface hci%d", hci_interface); |
| |
| osi_property_get("bluetooth.rfkill", prop_value, "0"); |
| |
| rfkill_en = atoi(prop_value); |
| if (rfkill_en) LOG_INFO(LOG_TAG, "RFKILL enabled"); |
| |
| bt_hwcfg_en = |
| osi_property_get("bluetooth.hwcfg", prop_value, NULL) > 0 ? 1 : 0; |
| if (bt_hwcfg_en) LOG_INFO(LOG_TAG, "HWCFG enabled"); |
| |
| return 0; |
| } |
| |
| static int bt_vendor_hw_cfg(int stop) { |
| if (!bt_hwcfg_en) return 0; |
| |
| if (stop) { |
| if (osi_property_set("bluetooth.hwcfg", "stop") < 0) { |
| LOG_ERROR(LOG_TAG, "%s cannot stop btcfg service via prop", __func__); |
| return 1; |
| } |
| } else { |
| if (osi_property_set("bluetooth.hwcfg", "start") < 0) { |
| LOG_ERROR(LOG_TAG, "%s cannot start btcfg service via prop", __func__); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| static int bt_vendor_wait_hcidev(void) { |
| struct sockaddr_hci addr; |
| struct pollfd fds[1]; |
| struct mgmt_pkt ev; |
| int fd; |
| int ret = 0; |
| |
| LOG_INFO(LOG_TAG, "%s", __func__); |
| |
| fd = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI); |
| if (fd < 0) { |
| LOG_ERROR(LOG_TAG, "Bluetooth socket error: %s", strerror(errno)); |
| return -1; |
| } |
| |
| memset(&addr, 0, sizeof(addr)); |
| addr.hci_family = AF_BLUETOOTH; |
| addr.hci_dev = HCI_DEV_NONE; |
| addr.hci_channel = HCI_CHANNEL_CONTROL; |
| |
| if (bind(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) { |
| LOG_ERROR(LOG_TAG, "HCI Channel Control: %s", strerror(errno)); |
| close(fd); |
| return -1; |
| } |
| |
| fds[0].fd = fd; |
| fds[0].events = POLLIN; |
| |
| /* Read Controller Index List Command */ |
| ev.opcode = MGMT_OP_INDEX_LIST; |
| ev.index = HCI_DEV_NONE; |
| ev.len = 0; |
| |
| ssize_t wrote; |
| OSI_NO_INTR(wrote = write(fd, &ev, 6)); |
| if (wrote != 6) { |
| LOG_ERROR(LOG_TAG, "Unable to write mgmt command: %s", strerror(errno)); |
| ret = -1; |
| goto end; |
| } |
| |
| while (1) { |
| int n; |
| OSI_NO_INTR(n = poll(fds, 1, MGMT_EV_POLL_TIMEOUT)); |
| if (n == -1) { |
| LOG_ERROR(LOG_TAG, "Poll error: %s", strerror(errno)); |
| ret = -1; |
| break; |
| } else if (n == 0) { |
| LOG_ERROR(LOG_TAG, "Timeout, no HCI device detected"); |
| ret = -1; |
| break; |
| } |
| |
| if (fds[0].revents & POLLIN) { |
| OSI_NO_INTR(n = read(fd, &ev, sizeof(struct mgmt_pkt))); |
| if (n < 0) { |
| LOG_ERROR(LOG_TAG, "Error reading control channel: %s", |
| strerror(errno)); |
| ret = -1; |
| break; |
| } |
| |
| if (ev.opcode == MGMT_EV_INDEX_ADDED && ev.index == hci_interface) { |
| goto end; |
| } else if (ev.opcode == MGMT_EV_COMMAND_COMP) { |
| struct mgmt_event_read_index* cc; |
| int i; |
| |
| cc = (struct mgmt_event_read_index*)ev.data; |
| |
| if (cc->cc_opcode != MGMT_OP_INDEX_LIST || cc->status != 0) continue; |
| |
| for (i = 0; i < cc->num_intf; i++) { |
| if (cc->index[i] == hci_interface) goto end; |
| } |
| } |
| } |
| } |
| |
| end: |
| close(fd); |
| return ret; |
| } |
| |
| static int bt_vendor_open(void* param) { |
| int(*fd_array)[] = (int(*)[])param; |
| int fd; |
| |
| LOG_INFO(LOG_TAG, "%s", __func__); |
| |
| fd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI); |
| if (fd < 0) { |
| LOG_ERROR(LOG_TAG, "socket create error %s", strerror(errno)); |
| return -1; |
| } |
| |
| (*fd_array)[CH_CMD] = fd; |
| (*fd_array)[CH_EVT] = fd; |
| (*fd_array)[CH_ACL_OUT] = fd; |
| (*fd_array)[CH_ACL_IN] = fd; |
| |
| bt_vendor_fd = fd; |
| |
| LOG_INFO(LOG_TAG, "%s returning %d", __func__, bt_vendor_fd); |
| |
| return 1; |
| } |
| |
| static int bt_vendor_close(void* param) { |
| (void)(param); |
| |
| LOG_INFO(LOG_TAG, "%s", __func__); |
| |
| if (bt_vendor_fd != -1) { |
| close(bt_vendor_fd); |
| bt_vendor_fd = -1; |
| } |
| |
| return 0; |
| } |
| |
| static int bt_vendor_rfkill(int block) { |
| struct rfkill_event event; |
| int fd; |
| |
| LOG_INFO(LOG_TAG, "%s", __func__); |
| |
| fd = open("/dev/rfkill", O_WRONLY); |
| if (fd < 0) { |
| LOG_ERROR(LOG_TAG, "Unable to open /dev/rfkill"); |
| return -1; |
| } |
| |
| memset(&event, 0, sizeof(struct rfkill_event)); |
| event.op = RFKILL_OP_CHANGE_ALL; |
| event.type = RFKILL_TYPE_BLUETOOTH; |
| event.hard = block; |
| event.soft = block; |
| |
| ssize_t len; |
| OSI_NO_INTR(len = write(fd, &event, sizeof(event))); |
| if (len < 0) { |
| LOG_ERROR(LOG_TAG, "Failed to change rfkill state"); |
| close(fd); |
| return 1; |
| } |
| |
| close(fd); |
| return 0; |
| } |
| |
| /* TODO: fw config should thread the device waiting and return immedialty */ |
| static void bt_vendor_fw_cfg(void) { |
| struct sockaddr_hci addr; |
| int fd = bt_vendor_fd; |
| |
| LOG_INFO(LOG_TAG, "%s", __func__); |
| |
| if (fd == -1) { |
| LOG_ERROR(LOG_TAG, "bt_vendor_fd: %s", strerror(EBADF)); |
| goto failure; |
| } |
| |
| memset(&addr, 0, sizeof(addr)); |
| addr.hci_family = AF_BLUETOOTH; |
| addr.hci_dev = hci_interface; |
| addr.hci_channel = HCI_CHANNEL_USER; |
| |
| if (bt_vendor_wait_hcidev()) { |
| LOG_ERROR(LOG_TAG, "HCI interface (%d) not found", hci_interface); |
| goto failure; |
| } |
| |
| if (bind(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) { |
| LOG_ERROR(LOG_TAG, "socket bind error %s", strerror(errno)); |
| goto failure; |
| } |
| |
| LOG_INFO(LOG_TAG, "HCI device ready"); |
| |
| bt_vendor_callbacks->fwcfg_cb(BT_VND_OP_RESULT_SUCCESS); |
| |
| return; |
| |
| failure: |
| LOG_ERROR(LOG_TAG, "Hardware Config Error"); |
| bt_vendor_callbacks->fwcfg_cb(BT_VND_OP_RESULT_FAIL); |
| } |
| |
| static int bt_vendor_op(bt_vendor_opcode_t opcode, void* param) { |
| int retval = 0; |
| |
| LOG_INFO(LOG_TAG, "%s op %d", __func__, opcode); |
| |
| switch (opcode) { |
| case BT_VND_OP_POWER_CTRL: |
| if (!rfkill_en || !param) break; |
| |
| if (*((int*)param) == BT_VND_PWR_ON) { |
| retval = bt_vendor_rfkill(0); |
| if (!retval) retval = bt_vendor_hw_cfg(0); |
| } else { |
| retval = bt_vendor_hw_cfg(1); |
| if (!retval) retval = bt_vendor_rfkill(1); |
| } |
| |
| break; |
| |
| case BT_VND_OP_FW_CFG: |
| bt_vendor_fw_cfg(); |
| break; |
| |
| case BT_VND_OP_SCO_CFG: |
| bt_vendor_callbacks->scocfg_cb(BT_VND_OP_RESULT_SUCCESS); |
| break; |
| |
| case BT_VND_OP_USERIAL_OPEN: |
| retval = bt_vendor_open(param); |
| break; |
| |
| case BT_VND_OP_USERIAL_CLOSE: |
| retval = bt_vendor_close(param); |
| break; |
| |
| case BT_VND_OP_GET_LPM_IDLE_TIMEOUT: |
| *((uint32_t*)param) = 3000; |
| retval = 0; |
| break; |
| |
| case BT_VND_OP_LPM_SET_MODE: |
| bt_vendor_callbacks->lpm_cb(BT_VND_OP_RESULT_SUCCESS); |
| break; |
| |
| case BT_VND_OP_LPM_WAKE_SET_STATE: |
| break; |
| |
| case BT_VND_OP_SET_AUDIO_STATE: |
| bt_vendor_callbacks->audio_state_cb(BT_VND_OP_RESULT_SUCCESS); |
| break; |
| |
| case BT_VND_OP_EPILOG: |
| bt_vendor_callbacks->epilog_cb(BT_VND_OP_RESULT_SUCCESS); |
| break; |
| |
| case BT_VND_OP_A2DP_OFFLOAD_START: |
| break; |
| |
| case BT_VND_OP_A2DP_OFFLOAD_STOP: |
| break; |
| } |
| |
| LOG_INFO(LOG_TAG, "%s op %d retval %d", __func__, opcode, retval); |
| |
| return retval; |
| } |
| |
| static void bt_vendor_cleanup(void) { |
| LOG_INFO(LOG_TAG, "%s", __func__); |
| |
| bt_vendor_callbacks = NULL; |
| } |
| |
| EXPORT_SYMBOL const bt_vendor_interface_t BLUETOOTH_VENDOR_LIB_INTERFACE = { |
| sizeof(bt_vendor_interface_t), bt_vendor_init, bt_vendor_op, |
| bt_vendor_cleanup, |
| }; |