diff options
author | Wu zheng <wu.zheng@intel.com> | 2013-10-23 10:59:15 +0800 |
---|---|---|
committer | Wu zheng <wu.zheng@intel.com> | 2013-10-23 10:59:15 +0800 |
commit | 7b2a18f8fa9ca2a101244853e34bd44f9ce3b0a3 (patch) | |
tree | 38610dbb3a2920b9f57fc7638e0efed820a3acb9 /emulator/amp.c | |
parent | 71235d13fb107f879369e64385d8c97de0bb840e (diff) | |
download | bluez-7b2a18f8fa9ca2a101244853e34bd44f9ce3b0a3.tar.gz bluez-7b2a18f8fa9ca2a101244853e34bd44f9ce3b0a3.tar.bz2 bluez-7b2a18f8fa9ca2a101244853e34bd44f9ce3b0a3.zip |
Imported Upstream version 5.10upstream/5.10
Diffstat (limited to 'emulator/amp.c')
-rw-r--r-- | emulator/amp.c | 1056 |
1 files changed, 1056 insertions, 0 deletions
diff --git a/emulator/amp.c b/emulator/amp.c new file mode 100644 index 00000000..714854b7 --- /dev/null +++ b/emulator/amp.c @@ -0,0 +1,1056 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2011-2012 Intel Corporation + * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org> + * + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; 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 <fcntl.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <sys/un.h> + +#include <bluetooth/bluetooth.h> +#include <bluetooth/hci.h> + +#include "monitor/mainloop.h" +#include "monitor/bt.h" + +#include "amp.h" + +#define le16_to_cpu(val) (val) +#define le32_to_cpu(val) (val) +#define cpu_to_le16(val) (val) +#define cpu_to_le32(val) (val) + +#define PHY_MODE_IDLE 0x00 +#define PHY_MODE_INITIATOR 0x01 +#define PHY_MODE_ACCEPTOR 0x02 + +#define MAX_ASSOC_LEN 672 + +struct bt_amp { + volatile int ref_count; + int vhci_fd; + + char phylink_path[32]; + int phylink_fd; + + uint8_t event_mask[16]; + uint16_t manufacturer; + uint8_t commands[64]; + uint8_t features[8]; + + uint8_t amp_status; + uint8_t amp_type; + uint8_t local_assoc[MAX_ASSOC_LEN]; + uint16_t local_assoc_len; + uint8_t remote_assoc[MAX_ASSOC_LEN]; + uint16_t remote_assoc_len; + + uint8_t phy_mode; + uint8_t phy_handle; + uint16_t logic_handle; +}; + +static void reset_defaults(struct bt_amp *amp) +{ + memset(amp->event_mask, 0, sizeof(amp->event_mask)); + amp->event_mask[1] |= 0x20; /* Command Complete */ + amp->event_mask[1] |= 0x40; /* Command Status */ + amp->event_mask[1] |= 0x80; /* Hardware Error */ + amp->event_mask[2] |= 0x01; /* Flush Occurred */ + amp->event_mask[2] |= 0x04; /* Number of Completed Packets */ + amp->event_mask[3] |= 0x02; /* Data Buffer Overflow */ + amp->event_mask[3] |= 0x20; /* QoS Violation */ + amp->event_mask[7] |= 0x01; /* Enhanced Flush Complete */ + + amp->event_mask[8] |= 0x01; /* Physical Link Complete */ + amp->event_mask[8] |= 0x02; /* Channel Selected */ + amp->event_mask[8] |= 0x04; /* Disconnection Physical Link Complete */ + amp->event_mask[8] |= 0x08; /* Physical Link Loss Early Warning */ + amp->event_mask[8] |= 0x10; /* Physical Link Recovery */ + amp->event_mask[8] |= 0x20; /* Logical Link Complete */ + amp->event_mask[8] |= 0x40; /* Disconection Logical Link Complete */ + amp->event_mask[8] |= 0x80; /* Flow Specification Modify Complete */ + amp->event_mask[9] |= 0x01; /* Number of Completed Data Blocks */ + amp->event_mask[9] |= 0x02; /* AMP Start Test */ + amp->event_mask[9] |= 0x04; /* AMP Test End */ + amp->event_mask[9] |= 0x08; /* AMP Receiver Report */ + amp->event_mask[9] |= 0x10; /* Short Range Mode Change Complete */ + amp->event_mask[9] |= 0x20; /* AMP Status Change */ + + amp->manufacturer = 0x003f; /* Bluetooth SIG (63) */ + + memset(amp->commands, 0, sizeof(amp->commands)); + amp->commands[5] |= 0x40; /* Set Event Mask */ + amp->commands[5] |= 0x80; /* Reset */ + //amp->commands[6] |= 0x01; /* Set Event Filter */ + //amp->commands[7] |= 0x04; /* Read Connection Accept Timeout */ + //amp->commands[7] |= 0x08; /* Write Connection Accept Timeout */ + //amp->commands[10] |= 0x80; /* Host Number of Completed Packets */ + //amp->commands[11] |= 0x01; /* Read Link Supervision Timeout */ + //amp->commands[11] |= 0x02; /* Write Link Supervision Timeout */ + amp->commands[14] |= 0x08; /* Read Local Version Information */ + amp->commands[14] |= 0x10; /* Read Local Supported Commands */ + amp->commands[14] |= 0x20; /* Read Local Supported Features */ + amp->commands[14] |= 0x80; /* Read Buffer Size */ + //amp->commands[15] |= 0x04; /* Read Failed Contact Counter */ + //amp->commands[15] |= 0x08; /* Reset Failed Contact Counter */ + //amp->commands[15] |= 0x10; /* Read Link Quality */ + //amp->commands[15] |= 0x20; /* Read RSSI */ + //amp->commands[16] |= 0x04; /* Enable Device Under Test Mode */ + //amp->commands[19] |= 0x40; /* Enhanced Flush */ + + amp->commands[21] |= 0x01; /* Create Physical Link */ + amp->commands[21] |= 0x02; /* Accept Physical Link */ + amp->commands[21] |= 0x04; /* Disconnect Phyiscal Link */ + amp->commands[21] |= 0x08; /* Create Logical Link */ + amp->commands[21] |= 0x10; /* Accept Logical Link */ + amp->commands[21] |= 0x20; /* Disconnect Logical Link */ + amp->commands[21] |= 0x40; /* Logical Link Cancel */ + //amp->commands[21] |= 0x80; /* Flow Specification Modify */ + //amp->commands[22] |= 0x01; /* Read Logical Link Accept Timeout */ + //amp->commands[22] |= 0x02; /* Write Logical Link Accept Timeout */ + amp->commands[22] |= 0x04; /* Set Event Mask Page 2 */ + amp->commands[22] |= 0x08; /* Read Location Data */ + amp->commands[22] |= 0x10; /* Write Location Data */ + amp->commands[22] |= 0x20; /* Read Local AMP Info */ + amp->commands[22] |= 0x40; /* Read Local AMP ASSOC */ + amp->commands[22] |= 0x80; /* Write Remote AMP ASSOC */ + amp->commands[23] |= 0x01; /* Read Flow Control Mode */ + amp->commands[23] |= 0x02; /* Write Flow Control Mode */ + amp->commands[23] |= 0x04; /* Read Data Block Size */ + //amp->commands[23] |= 0x20; /* Enable AMP Receiver Reports */ + //amp->commands[23] |= 0x40; /* AMP Test End */ + //amp->commands[23] |= 0x80; /* AMP Test */ + //amp->commands[24] |= 0x04; /* Read Best Effort Flush Timeout */ + //amp->commands[24] |= 0x08; /* Write Best Effort Flush Timeout */ + //amp->commands[24] |= 0x10; /* Short Range Mode */ + + memset(amp->features, 0, sizeof(amp->features)); + + amp->amp_status = 0x01; /* Used for Bluetooth only */ + amp->amp_type = 0x42; /* Fake virtual AMP type */ + + memset(amp->local_assoc, 0, sizeof(amp->local_assoc)); + amp->local_assoc_len = 0; + + memset(amp->remote_assoc, 0, sizeof(amp->remote_assoc)); + amp->remote_assoc_len = 0; + + amp->phy_mode = PHY_MODE_IDLE; + amp->phy_handle = 0x00; /* Invalid physical link handle */ + amp->logic_handle = 0x0000; +} + +static void send_packet(struct bt_amp *amp, const void *data, uint16_t len) +{ + if (write(amp->vhci_fd, data, len) < 0) + fprintf(stderr, "Write to /dev/vhci failed\n"); +} + +static void send_event(struct bt_amp *amp, uint8_t event, + const void *data, uint8_t len) +{ + struct bt_hci_evt_hdr *hdr; + uint16_t pkt_len; + void *pkt_data; + + pkt_len = 1 + sizeof(*hdr) + len; + + pkt_data = alloca(pkt_len); + if (!pkt_data) + return; + + ((uint8_t *) pkt_data)[0] = BT_H4_EVT_PKT; + + hdr = pkt_data + 1; + hdr->evt = event; + hdr->plen = len; + + if (len > 0) + memcpy(pkt_data + 1 + sizeof(*hdr), data, len); + + send_packet(amp, pkt_data, pkt_len); +} + +static void cmd_complete(struct bt_amp *amp, uint16_t opcode, + const void *data, uint8_t len) +{ + struct bt_hci_evt_hdr *hdr; + struct bt_hci_evt_cmd_complete *cc; + uint16_t pkt_len; + void *pkt_data; + + pkt_len = 1 + sizeof(*hdr) + sizeof(*cc) + len; + + pkt_data = alloca(pkt_len); + if (!pkt_data) + return; + + ((uint8_t *) pkt_data)[0] = BT_H4_EVT_PKT; + + hdr = pkt_data + 1; + hdr->evt = BT_HCI_EVT_CMD_COMPLETE; + hdr->plen = sizeof(*cc) + len; + + cc = pkt_data + 1 + sizeof(*hdr); + cc->ncmd = 0x01; + cc->opcode = cpu_to_le16(opcode); + + if (len > 0) + memcpy(pkt_data + 1 + sizeof(*hdr) + sizeof(*cc), data, len); + + send_packet(amp, pkt_data, pkt_len); +} + +static void cmd_status(struct bt_amp *amp, uint8_t status, uint16_t opcode) +{ + struct bt_hci_evt_hdr *hdr; + struct bt_hci_evt_cmd_status *cs; + uint16_t pkt_len; + void *pkt_data; + + pkt_len = 1 + sizeof(*hdr) + sizeof(*cs); + + pkt_data = alloca(pkt_len); + if (!pkt_data) + return; + + ((uint8_t *) pkt_data)[0] = BT_H4_EVT_PKT; + + hdr = pkt_data + 1; + hdr->evt = BT_HCI_EVT_CMD_STATUS; + hdr->plen = sizeof(*cs); + + cs = pkt_data + 1 + sizeof(*hdr); + cs->status = status; + cs->ncmd = 0x01; + cs->opcode = cpu_to_le16(opcode); + + send_packet(amp, pkt_data, pkt_len); +} + +static void cmd_set_event_mask(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_set_event_mask *cmd = data; + uint8_t status; + + memcpy(amp->event_mask, cmd->mask, 8); + + status = BT_HCI_ERR_SUCCESS; + cmd_complete(amp, BT_HCI_CMD_SET_EVENT_MASK, &status, sizeof(status)); +} + +static void cmd_reset(struct bt_amp *amp, const void *data, uint8_t size) +{ + uint8_t status; + + reset_defaults(amp); + + amp->local_assoc[0] = 0x00; + amp->local_assoc_len = 1; + + status = BT_HCI_ERR_SUCCESS; + cmd_complete(amp, BT_HCI_CMD_RESET, &status, sizeof(status)); +} + +static void cmd_read_local_version(struct bt_amp *amp, + const void *data, uint8_t size) +{ + struct bt_hci_rsp_read_local_version rsp; + + rsp.status = BT_HCI_ERR_SUCCESS; + rsp.hci_ver = 0x05; + rsp.hci_rev = cpu_to_le16(0x0000); + rsp.lmp_ver = 0x01; + rsp.manufacturer = cpu_to_le16(amp->manufacturer); + rsp.lmp_subver = cpu_to_le16(0x0000); + + cmd_complete(amp, BT_HCI_CMD_READ_LOCAL_VERSION, &rsp, sizeof(rsp)); +} + +static void cmd_read_local_commands(struct bt_amp *amp, + const void *data, uint8_t size) +{ + struct bt_hci_rsp_read_local_commands rsp; + + rsp.status = BT_HCI_ERR_SUCCESS; + memcpy(rsp.commands, amp->commands, 64); + + cmd_complete(amp, BT_HCI_CMD_READ_LOCAL_COMMANDS, &rsp, sizeof(rsp)); +} + +static void cmd_read_local_features(struct bt_amp *amp, + const void *data, uint8_t size) +{ + struct bt_hci_rsp_read_local_features rsp; + + rsp.status = BT_HCI_ERR_SUCCESS; + memcpy(rsp.features, amp->features, 8); + + cmd_complete(amp, BT_HCI_CMD_READ_LOCAL_FEATURES, &rsp, sizeof(rsp)); +} + +static void cmd_read_buffer_size(struct bt_amp *amp, + const void *data, uint8_t size) +{ + struct bt_hci_rsp_read_buffer_size rsp; + + rsp.status = BT_HCI_ERR_SUCCESS; + rsp.acl_mtu = cpu_to_le16(0x0000); + rsp.sco_mtu = 0x00; + rsp.acl_max_pkt = cpu_to_le16(0x0000); + rsp.sco_max_pkt = cpu_to_le16(0x0000); + + cmd_complete(amp, BT_HCI_CMD_READ_BUFFER_SIZE, &rsp, sizeof(rsp)); +} + +static void evt_phy_link_complete(struct bt_amp *amp) +{ + struct bt_hci_evt_phy_link_complete evt; + + evt.status = BT_HCI_ERR_SUCCESS; + evt.phy_handle = amp->phy_handle; + + send_event(amp, BT_HCI_EVT_PHY_LINK_COMPLETE, &evt, sizeof(evt)); +} + +static void evt_disconn_phy_link_complete(struct bt_amp *amp, uint8_t reason) +{ + struct bt_hci_evt_disconn_phy_link_complete evt; + + evt.status = BT_HCI_ERR_SUCCESS; + evt.phy_handle = amp->phy_handle; + evt.reason = reason; + + send_event(amp, BT_HCI_EVT_DISCONN_PHY_LINK_COMPLETE, + &evt, sizeof(evt)); +} + +static void link_callback(int fd, uint32_t events, void *user_data) +{ + struct bt_amp *amp = user_data; + + if (events & (EPOLLERR | EPOLLHUP)) { + close(fd); + mainloop_remove_fd(fd); + + evt_disconn_phy_link_complete(amp, 0x13); + + amp->phy_mode = PHY_MODE_IDLE; + amp->phy_handle = 0x00; + return; + } +} + +static void cmd_create_phy_link(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_create_phy_link *cmd = data; + + if (cmd->phy_handle == 0x00) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_CREATE_PHY_LINK); + return; + } + + if (amp->phy_mode != PHY_MODE_IDLE) { + cmd_status(amp, BT_HCI_ERR_COMMAND_DISALLOWED, + BT_HCI_CMD_CREATE_PHY_LINK); + return; + } + + amp->phy_mode = PHY_MODE_INITIATOR; + amp->phy_handle = cmd->phy_handle; + + cmd_status(amp, BT_HCI_ERR_SUCCESS, BT_HCI_CMD_CREATE_PHY_LINK); +} + +static void cmd_accept_phy_link(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_accept_phy_link *cmd = data; + + if (cmd->phy_handle == 0x00) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_ACCEPT_PHY_LINK); + return; + } + + if (amp->phy_mode != PHY_MODE_IDLE) { + cmd_status(amp, BT_HCI_ERR_COMMAND_DISALLOWED, + BT_HCI_CMD_ACCEPT_PHY_LINK); + return; + } + + amp->phy_mode = PHY_MODE_ACCEPTOR; + amp->phy_handle = cmd->phy_handle; + + cmd_status(amp, BT_HCI_ERR_SUCCESS, BT_HCI_CMD_ACCEPT_PHY_LINK); +} + +static void cmd_disconn_phy_link(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_disconn_phy_link *cmd = data; + + if (cmd->phy_handle == 0x00) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_DISCONN_PHY_LINK); + return; + } + + if (amp->phy_mode == PHY_MODE_IDLE) { + cmd_status(amp, BT_HCI_ERR_COMMAND_DISALLOWED, + BT_HCI_CMD_DISCONN_PHY_LINK); + return; + } + + if (cmd->phy_handle != amp->phy_handle) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_DISCONN_PHY_LINK); + return; + } + + cmd_status(amp, BT_HCI_ERR_SUCCESS, BT_HCI_CMD_DISCONN_PHY_LINK); + + mainloop_remove_fd(amp->phylink_fd); + close(amp->phylink_fd); + + evt_disconn_phy_link_complete(amp, cmd->reason); + + amp->phy_mode = PHY_MODE_IDLE; + amp->phy_handle = 0x00; +} + +static void evt_logic_link_complete(struct bt_amp *amp) +{ + struct bt_hci_evt_logic_link_complete evt; + + evt.status = BT_HCI_ERR_SUCCESS; + evt.handle = htobs(amp->logic_handle); + evt.phy_handle = amp->phy_handle; + evt.flow_spec = 0x00; + + send_event(amp, BT_HCI_EVT_LOGIC_LINK_COMPLETE, &evt, sizeof(evt)); +} + +static void evt_disconn_logic_link_complete(struct bt_amp *amp, uint8_t reason) +{ + struct bt_hci_evt_disconn_logic_link_complete evt; + + evt.status = BT_HCI_ERR_SUCCESS; + evt.handle = htobs(amp->logic_handle); + evt.reason = reason; + + send_event(amp, BT_HCI_EVT_DISCONN_LOGIC_LINK_COMPLETE, + &evt, sizeof(evt)); +} + +static void cmd_create_logic_link(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_create_logic_link *cmd = data; + + if (cmd->phy_handle == 0x00) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_CREATE_LOGIC_LINK); + return; + } + + if (amp->phy_mode != PHY_MODE_IDLE) { + cmd_status(amp, BT_HCI_ERR_COMMAND_DISALLOWED, + BT_HCI_CMD_CREATE_LOGIC_LINK); + return; + } + + if (amp->logic_handle != 0x00) { + cmd_status(amp, BT_HCI_ERR_COMMAND_DISALLOWED, + BT_HCI_CMD_CREATE_LOGIC_LINK); + return; + } + + cmd_status(amp, BT_HCI_ERR_SUCCESS, BT_HCI_CMD_CREATE_LOGIC_LINK); + + amp->logic_handle = 0x0042; + + evt_logic_link_complete(amp); +} + +static void cmd_accept_logic_link(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_accept_logic_link *cmd = data; + + if (cmd->phy_handle == 0x00) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_ACCEPT_LOGIC_LINK); + return; + } + + if (amp->phy_mode != PHY_MODE_IDLE) { + cmd_status(amp, BT_HCI_ERR_COMMAND_DISALLOWED, + BT_HCI_CMD_ACCEPT_LOGIC_LINK); + return; + } + + if (amp->logic_handle != 0x00) { + cmd_status(amp, BT_HCI_ERR_COMMAND_DISALLOWED, + BT_HCI_CMD_ACCEPT_LOGIC_LINK); + return; + } + + cmd_status(amp, BT_HCI_ERR_SUCCESS, BT_HCI_CMD_ACCEPT_LOGIC_LINK); + + amp->logic_handle = 0x0023; + + evt_logic_link_complete(amp); +} + +static void cmd_disconn_logic_link(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_disconn_logic_link *cmd = data; + + if (cmd->handle == 0x00) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_DISCONN_LOGIC_LINK); + return; + } + + if (cmd->handle != amp->logic_handle) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_DISCONN_LOGIC_LINK); + return; + } + + cmd_status(amp, BT_HCI_ERR_SUCCESS, BT_HCI_CMD_DISCONN_LOGIC_LINK); + + evt_disconn_logic_link_complete(amp, 0x13); + + amp->logic_handle = 0x0000; +} + +static void cmd_logic_link_cancel(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_logic_link_cancel *cmd = data; + struct bt_hci_rsp_logic_link_cancel rsp; + + if (cmd->phy_handle == 0x00) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_LOGIC_LINK_CANCEL); + return; + } + + if (amp->phy_mode != PHY_MODE_IDLE) { + cmd_status(amp, BT_HCI_ERR_COMMAND_DISALLOWED, + BT_HCI_CMD_LOGIC_LINK_CANCEL); + return; + } + + amp->logic_handle = 0x0000; + + rsp.status = BT_HCI_ERR_SUCCESS; + rsp.phy_handle = amp->phy_handle; + rsp.flow_spec = 0x00; + + cmd_complete(amp, BT_HCI_CMD_LOGIC_LINK_CANCEL, &rsp, sizeof(rsp)); +} + +static void cmd_set_event_mask_page2(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_set_event_mask_page2 *cmd = data; + uint8_t status; + + memcpy(amp->event_mask + 8, cmd->mask, 8); + + status = BT_HCI_ERR_SUCCESS; + cmd_complete(amp, BT_HCI_CMD_SET_EVENT_MASK_PAGE2, + &status, sizeof(status)); +} + +static void cmd_read_location_data(struct bt_amp *amp, + const void *data, uint8_t size) +{ + struct bt_hci_rsp_read_location_data rsp; + + rsp.status = BT_HCI_ERR_SUCCESS; + rsp.domain_aware = 0x00; + rsp.domain[0] = 0x58; + rsp.domain[1] = 0x58; + rsp.domain_options = 0x58; + rsp.options = 0x00; + + cmd_complete(amp, BT_HCI_CMD_READ_LOCATION_DATA, &rsp, sizeof(rsp)); +} + +static void cmd_write_location_data(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_write_location_data *cmd = data; + uint8_t status; + + if (cmd->domain_aware > 0x01) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_WRITE_LOCATION_DATA); + return; + } + + status = BT_HCI_ERR_SUCCESS; + cmd_complete(amp, BT_HCI_CMD_WRITE_LOCATION_DATA, + &status, sizeof(status)); +} + +static void cmd_read_flow_control_mode(struct bt_amp *amp, + const void *data, uint8_t size) +{ + struct bt_hci_rsp_read_flow_control_mode rsp; + + rsp.status = BT_HCI_ERR_SUCCESS; + rsp.mode = 0x01; + + cmd_complete(amp, BT_HCI_CMD_READ_FLOW_CONTROL_MODE, + &rsp, sizeof(rsp)); +} + +static void cmd_write_flow_control_mode(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_write_flow_control_mode *cmd = data; + uint8_t status; + + if (cmd->mode != 0x01) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_WRITE_FLOW_CONTROL_MODE); + return; + } + + status = BT_HCI_ERR_SUCCESS; + cmd_complete(amp, BT_HCI_CMD_WRITE_FLOW_CONTROL_MODE, + &status, sizeof(status)); +} + +static void cmd_read_data_block_size(struct bt_amp *amp, + const void *data, uint8_t size) +{ + struct bt_hci_rsp_read_data_block_size rsp; + + rsp.status = BT_HCI_ERR_SUCCESS; + rsp.max_acl_len = cpu_to_le16(1492); + rsp.block_len = cpu_to_le16(1492); + rsp.num_blocks = cpu_to_le16(1); + + cmd_complete(amp, BT_HCI_CMD_READ_DATA_BLOCK_SIZE, &rsp, sizeof(rsp)); +} + +static void cmd_read_local_amp_info(struct bt_amp *amp, + const void *data, uint8_t size) +{ + struct bt_hci_rsp_read_local_amp_info rsp; + + rsp.status = BT_HCI_ERR_SUCCESS; + rsp.amp_status = amp->amp_status; + rsp.total_bw = cpu_to_le32(24000); + rsp.max_bw = cpu_to_le32(24000); + rsp.min_latency = cpu_to_le32(100); + rsp.max_pdu = cpu_to_le32(1492); + rsp.amp_type = amp->amp_type; + rsp.pal_cap = cpu_to_le16(0x0001); + rsp.max_assoc_len = cpu_to_le16(MAX_ASSOC_LEN); + rsp.max_flush_to = cpu_to_le32(20000); + rsp.be_flush_to = cpu_to_le32(20000); + + cmd_complete(amp, BT_HCI_CMD_READ_LOCAL_AMP_INFO, &rsp, sizeof(rsp)); +} + +static void cmd_read_local_amp_assoc(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_read_local_amp_assoc *cmd = data; + struct bt_hci_rsp_read_local_amp_assoc rsp; + uint16_t len_so_far, remain_assoc_len, fragment_len; + + if (cmd->phy_handle != amp->phy_handle) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_READ_LOCAL_AMP_ASSOC); + return; + } + + len_so_far = le16_to_cpu(cmd->len_so_far); + remain_assoc_len = amp->local_assoc_len - len_so_far; + fragment_len = remain_assoc_len > 248 ? 248 : remain_assoc_len; + + rsp.status = BT_HCI_ERR_SUCCESS; + rsp.phy_handle = cmd->phy_handle; + rsp.remain_assoc_len = cpu_to_le16(remain_assoc_len); + memcpy(rsp.assoc_fragment, amp->local_assoc + len_so_far, + fragment_len); + + cmd_complete(amp, BT_HCI_CMD_READ_LOCAL_AMP_ASSOC, + &rsp, 4 + fragment_len); +} + +static int create_unix_server(const char *path) +{ + struct sockaddr_un addr; + int fd; + + fd = socket(PF_UNIX, SOCK_SEQPACKET, 0); + if (fd < 0) + return -1; + + memset(&addr, 0, sizeof(addr)); + addr.sun_family = AF_UNIX; + addr.sun_path[0] = '\0'; + strcpy(addr.sun_path + 1, path); + + if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { + close(fd); + return -1; + } + + if (listen(fd, 1) < 0) { + close(fd); + return -1; + } + + return fd; +} + +static int connect_unix_client(const char *path) +{ + struct sockaddr_un addr; + int fd; + + fd = socket(PF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC | SOCK_NONBLOCK, 0); + if (fd < 0) + return -1; + + memset(&addr, 0, sizeof(addr)); + addr.sun_family = AF_UNIX; + addr.sun_path[0] = '\0'; + strcpy(addr.sun_path + 1, path); + + if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { + close(fd); + return -1; + } + + return fd; +} + +static void accept_callback(int fd, uint32_t events, void *user_data) +{ + struct bt_amp *amp = user_data; + struct sockaddr_un addr; + socklen_t len; + int new_fd; + + if (events & (EPOLLERR | EPOLLHUP)) { + mainloop_remove_fd(fd); + return; + } + + memset(&addr, 0, sizeof(addr)); + len = sizeof(addr); + + new_fd = accept4(fd, (struct sockaddr *) &addr, &len, + SOCK_CLOEXEC | SOCK_NONBLOCK); + if (new_fd < 0) + return; + + mainloop_remove_fd(fd); + close(fd); + + amp->phylink_fd = new_fd; + + evt_phy_link_complete(amp); + + mainloop_add_fd(new_fd, EPOLLIN, link_callback, amp, NULL); +} + +static void connect_callback(int fd, uint32_t events, void *user_data) +{ + struct bt_amp *amp = user_data; + + if (events & (EPOLLERR | EPOLLHUP)) { + mainloop_remove_fd(fd); + return; + } + + mainloop_remove_fd(fd); + + evt_phy_link_complete(amp); + + mainloop_add_fd(fd, EPOLLIN, link_callback, amp, NULL); +} + +static void cmd_write_remote_amp_assoc(struct bt_amp *amp, + const void *data, uint8_t size) +{ + const struct bt_hci_cmd_write_remote_amp_assoc *cmd = data; + struct bt_hci_rsp_write_remote_amp_assoc rsp; + int fd; + + if (cmd->phy_handle == 0x00) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_WRITE_REMOTE_AMP_ASSOC); + return; + } + + if (cmd->phy_handle != amp->phy_handle) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, + BT_HCI_CMD_WRITE_REMOTE_AMP_ASSOC); + return; + } + + switch (amp->phy_mode) { + case PHY_MODE_INITIATOR: + strcpy(amp->phylink_path, "amp"); + + fd = create_unix_server(amp->phylink_path); + if (fd < 0) { + cmd_status(amp, BT_HCI_ERR_UNSPECIFIED_ERROR, + BT_HCI_CMD_WRITE_REMOTE_AMP_ASSOC); + return; + } + + amp->local_assoc[0] = 0x01; + memcpy(amp->local_assoc + 1, amp->phylink_path, + strlen(amp->phylink_path) + 1); + amp->local_assoc_len = strlen(amp->phylink_path) + 2; + + mainloop_add_fd(fd, EPOLLIN, accept_callback, amp, NULL); + + amp->phylink_fd = fd; + break; + + case PHY_MODE_ACCEPTOR: + if (cmd->assoc_fragment[0] != 0x01) { + cmd_status(amp, BT_HCI_ERR_UNSPECIFIED_ERROR, + BT_HCI_CMD_WRITE_REMOTE_AMP_ASSOC); + return; + } + + memcpy(amp->phylink_path, cmd->assoc_fragment + 1, + cmd->remain_assoc_len - 1); + + fd = connect_unix_client(amp->phylink_path); + if (fd < 0) { + cmd_status(amp, BT_HCI_ERR_UNSPECIFIED_ERROR, + BT_HCI_CMD_WRITE_REMOTE_AMP_ASSOC); + return; + } + + mainloop_add_fd(fd, EPOLLOUT, connect_callback, amp, NULL); + + amp->phylink_fd = fd; + break; + + default: + cmd_status(amp, BT_HCI_ERR_COMMAND_DISALLOWED, + BT_HCI_CMD_WRITE_REMOTE_AMP_ASSOC); + return; + } + + rsp.status = BT_HCI_ERR_SUCCESS; + rsp.phy_handle = amp->phy_handle; + + cmd_complete(amp, BT_HCI_CMD_WRITE_REMOTE_AMP_ASSOC, &rsp, sizeof(rsp)); + + if (amp->phy_mode == PHY_MODE_INITIATOR) { + struct bt_hci_evt_channel_selected evt; + + evt.phy_handle = amp->phy_handle; + + send_event(amp, BT_HCI_EVT_CHANNEL_SELECTED, &evt, sizeof(evt)); + } +} + +static const struct { + uint16_t opcode; + void (*func) (struct bt_amp *amp, const void *data, uint8_t size); + uint8_t size; + bool fixed; +} cmd_table[] = { + { BT_HCI_CMD_SET_EVENT_MASK, cmd_set_event_mask, 8, true }, + { BT_HCI_CMD_RESET, cmd_reset, 0, true }, + { BT_HCI_CMD_READ_LOCAL_VERSION, cmd_read_local_version, 0, true }, + { BT_HCI_CMD_READ_LOCAL_COMMANDS, cmd_read_local_commands, 0, true }, + { BT_HCI_CMD_READ_LOCAL_FEATURES, cmd_read_local_features, 0, true }, + { BT_HCI_CMD_READ_BUFFER_SIZE, cmd_read_buffer_size, 0, true }, + + { BT_HCI_CMD_CREATE_PHY_LINK, + cmd_create_phy_link, 3, false }, + { BT_HCI_CMD_ACCEPT_PHY_LINK, + cmd_accept_phy_link, 3, false }, + { BT_HCI_CMD_DISCONN_PHY_LINK, + cmd_disconn_phy_link, 2, true }, + { BT_HCI_CMD_CREATE_LOGIC_LINK, + cmd_create_logic_link, 33, true }, + { BT_HCI_CMD_ACCEPT_LOGIC_LINK, + cmd_accept_logic_link, 33, true }, + { BT_HCI_CMD_DISCONN_LOGIC_LINK, + cmd_disconn_logic_link, 2, true }, + { BT_HCI_CMD_LOGIC_LINK_CANCEL, + cmd_logic_link_cancel, 2, true }, + { BT_HCI_CMD_SET_EVENT_MASK_PAGE2, + cmd_set_event_mask_page2, 8, true }, + { BT_HCI_CMD_READ_LOCATION_DATA, + cmd_read_location_data, 0, true }, + { BT_HCI_CMD_WRITE_LOCATION_DATA, + cmd_write_location_data, 5, true }, + { BT_HCI_CMD_READ_FLOW_CONTROL_MODE, + cmd_read_flow_control_mode, 0, true }, + { BT_HCI_CMD_WRITE_FLOW_CONTROL_MODE, + cmd_write_flow_control_mode, 1, true }, + { BT_HCI_CMD_READ_DATA_BLOCK_SIZE, + cmd_read_data_block_size, 0, true }, + { BT_HCI_CMD_READ_LOCAL_AMP_INFO, + cmd_read_local_amp_info, 0, true }, + { BT_HCI_CMD_READ_LOCAL_AMP_ASSOC, + cmd_read_local_amp_assoc, 5, true }, + { BT_HCI_CMD_WRITE_REMOTE_AMP_ASSOC, + cmd_write_remote_amp_assoc, 6, false }, + { } +}; + +static void process_command(struct bt_amp *amp, const void *data, size_t size) +{ + const struct bt_hci_cmd_hdr *hdr = data; + uint16_t opcode; + unsigned int i; + + if (size < sizeof(*hdr)) + return; + + data += sizeof(*hdr); + size -= sizeof(*hdr); + + opcode = le16_to_cpu(hdr->opcode); + + if (hdr->plen != size) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, opcode); + return; + } + + for (i = 0; cmd_table[i].func; i++) { + if (cmd_table[i].opcode != opcode) + continue; + + if ((cmd_table[i].fixed && size != cmd_table[i].size) || + size < cmd_table[i].size) { + cmd_status(amp, BT_HCI_ERR_INVALID_PARAMETERS, opcode); + return; + } + + cmd_table[i].func(amp, data, size); + return; + } + + cmd_status(amp, BT_HCI_ERR_UNKNOWN_COMMAND, opcode); +} + +static void vhci_read_callback(int fd, uint32_t events, void *user_data) +{ + struct bt_amp *amp = user_data; + unsigned char buf[4096]; + ssize_t len; + + if (events & (EPOLLERR | EPOLLHUP)) + return; + + len = read(amp->vhci_fd, buf, sizeof(buf)); + if (len < 1) + return; + + switch (buf[0]) { + case BT_H4_CMD_PKT: + process_command(amp, buf + 1, len - 1); + break; + } +} + +struct bt_amp *bt_amp_new(void) +{ + unsigned char setup_cmd[2]; + struct bt_amp *amp; + + amp = calloc(1, sizeof(*amp)); + if (!amp) + return NULL; + + reset_defaults(amp); + + amp->vhci_fd = open("/dev/vhci", O_RDWR); + if (amp->vhci_fd < 0) { + free(amp); + return NULL; + } + + setup_cmd[0] = HCI_VENDOR_PKT; + setup_cmd[1] = HCI_AMP; + + if (write(amp->vhci_fd, setup_cmd, sizeof(setup_cmd)) < 0) { + close(amp->vhci_fd); + free(amp); + return NULL; + } + + mainloop_add_fd(amp->vhci_fd, EPOLLIN, vhci_read_callback, amp, NULL); + + return bt_amp_ref(amp); +} + +struct bt_amp *bt_amp_ref(struct bt_amp *amp) +{ + if (!amp) + return NULL; + + __sync_fetch_and_add(&->ref_count, 1); + + return amp; +} + +void bt_amp_unref(struct bt_amp *amp) +{ + if (!amp) + return; + + if (__sync_sub_and_fetch(&->ref_count, 1)) + return; + + mainloop_remove_fd(amp->vhci_fd); + + close(amp->vhci_fd); + + free(amp); +} |