diff options
Diffstat (limited to 'hw/bt/hid.c')
| -rw-r--r-- | hw/bt/hid.c | 553 |
1 files changed, 0 insertions, 553 deletions
diff --git a/hw/bt/hid.c b/hw/bt/hid.c deleted file mode 100644 index 066ca99ed2..0000000000 --- a/hw/bt/hid.c +++ /dev/null @@ -1,553 +0,0 @@ -/* - * QEMU Bluetooth HID Profile wrapper for USB HID. - * - * Copyright (C) 2007-2008 OpenMoko, Inc. - * Written by Andrzej Zaborowski <andrew@openedhand.com> - * - * 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, if not, see <http://www.gnu.org/licenses/>. - */ - -#include "qemu/osdep.h" -#include "qemu/timer.h" -#include "ui/console.h" -#include "hw/input/hid.h" -#include "hw/bt.h" - -enum hid_transaction_req { - BT_HANDSHAKE = 0x0, - BT_HID_CONTROL = 0x1, - BT_GET_REPORT = 0x4, - BT_SET_REPORT = 0x5, - BT_GET_PROTOCOL = 0x6, - BT_SET_PROTOCOL = 0x7, - BT_GET_IDLE = 0x8, - BT_SET_IDLE = 0x9, - BT_DATA = 0xa, - BT_DATC = 0xb, -}; - -enum hid_transaction_handshake { - BT_HS_SUCCESSFUL = 0x0, - BT_HS_NOT_READY = 0x1, - BT_HS_ERR_INVALID_REPORT_ID = 0x2, - BT_HS_ERR_UNSUPPORTED_REQUEST = 0x3, - BT_HS_ERR_INVALID_PARAMETER = 0x4, - BT_HS_ERR_UNKNOWN = 0xe, - BT_HS_ERR_FATAL = 0xf, -}; - -enum hid_transaction_control { - BT_HC_NOP = 0x0, - BT_HC_HARD_RESET = 0x1, - BT_HC_SOFT_RESET = 0x2, - BT_HC_SUSPEND = 0x3, - BT_HC_EXIT_SUSPEND = 0x4, - BT_HC_VIRTUAL_CABLE_UNPLUG = 0x5, -}; - -enum hid_protocol { - BT_HID_PROTO_BOOT = 0, - BT_HID_PROTO_REPORT = 1, -}; - -enum hid_boot_reportid { - BT_HID_BOOT_INVALID = 0, - BT_HID_BOOT_KEYBOARD, - BT_HID_BOOT_MOUSE, -}; - -enum hid_data_pkt { - BT_DATA_OTHER = 0, - BT_DATA_INPUT, - BT_DATA_OUTPUT, - BT_DATA_FEATURE, -}; - -#define BT_HID_MTU 48 - -/* HID interface requests */ -#define GET_REPORT 0xa101 -#define GET_IDLE 0xa102 -#define GET_PROTOCOL 0xa103 -#define SET_REPORT 0x2109 -#define SET_IDLE 0x210a -#define SET_PROTOCOL 0x210b - -struct bt_hid_device_s { - struct bt_l2cap_device_s btdev; - struct bt_l2cap_conn_params_s *control; - struct bt_l2cap_conn_params_s *interrupt; - HIDState hid; - - int proto; - int connected; - int data_type; - int intr_state; - struct { - int len; - uint8_t buffer[1024]; - } dataother, datain, dataout, feature, intrdataout; - enum { - bt_state_ready, - bt_state_transaction, - bt_state_suspend, - } state; -}; - -static void bt_hid_reset(struct bt_hid_device_s *s) -{ - struct bt_scatternet_s *net = s->btdev.device.net; - - /* Go as far as... */ - bt_l2cap_device_done(&s->btdev); - bt_l2cap_device_init(&s->btdev, net); - - hid_reset(&s->hid); - s->proto = BT_HID_PROTO_REPORT; - s->state = bt_state_ready; - s->dataother.len = 0; - s->datain.len = 0; - s->dataout.len = 0; - s->feature.len = 0; - s->intrdataout.len = 0; - s->intr_state = 0; -} - -static int bt_hid_out(struct bt_hid_device_s *s) -{ - if (s->data_type == BT_DATA_OUTPUT) { - /* nothing */ - ; - } - - if (s->data_type == BT_DATA_FEATURE) { - /* XXX: - * does this send a USB_REQ_CLEAR_FEATURE/USB_REQ_SET_FEATURE - * or a SET_REPORT? */ - ; - } - - return -1; -} - -static int bt_hid_in(struct bt_hid_device_s *s) -{ - s->datain.len = hid_keyboard_poll(&s->hid, s->datain.buffer, - sizeof(s->datain.buffer)); - return s->datain.len; -} - -static void bt_hid_send_handshake(struct bt_hid_device_s *s, int result) -{ - *s->control->sdu_out(s->control, 1) = - (BT_HANDSHAKE << 4) | result; - s->control->sdu_submit(s->control); -} - -static void bt_hid_send_control(struct bt_hid_device_s *s, int operation) -{ - *s->control->sdu_out(s->control, 1) = - (BT_HID_CONTROL << 4) | operation; - s->control->sdu_submit(s->control); -} - -static void bt_hid_disconnect(struct bt_hid_device_s *s) -{ - /* Disconnect s->control and s->interrupt */ -} - -static void bt_hid_send_data(struct bt_l2cap_conn_params_s *ch, int type, - const uint8_t *data, int len) -{ - uint8_t *pkt, hdr = (BT_DATA << 4) | type; - int plen; - - do { - plen = MIN(len, ch->remote_mtu - 1); - pkt = ch->sdu_out(ch, plen + 1); - - pkt[0] = hdr; - if (plen) - memcpy(pkt + 1, data, plen); - ch->sdu_submit(ch); - - len -= plen; - data += plen; - hdr = (BT_DATC << 4) | type; - } while (plen == ch->remote_mtu - 1); -} - -static void bt_hid_control_transaction(struct bt_hid_device_s *s, - const uint8_t *data, int len) -{ - uint8_t type, parameter; - int rlen, ret = -1; - if (len < 1) - return; - - type = data[0] >> 4; - parameter = data[0] & 0xf; - - switch (type) { - case BT_HANDSHAKE: - case BT_DATA: - switch (parameter) { - default: - /* These are not expected to be sent this direction. */ - ret = BT_HS_ERR_INVALID_PARAMETER; - } - break; - - case BT_HID_CONTROL: - if (len != 1 || (parameter != BT_HC_VIRTUAL_CABLE_UNPLUG && - s->state == bt_state_transaction)) { - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - } - switch (parameter) { - case BT_HC_NOP: - break; - case BT_HC_HARD_RESET: - case BT_HC_SOFT_RESET: - bt_hid_reset(s); - break; - case BT_HC_SUSPEND: - if (s->state == bt_state_ready) - s->state = bt_state_suspend; - else - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - case BT_HC_EXIT_SUSPEND: - if (s->state == bt_state_suspend) - s->state = bt_state_ready; - else - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - case BT_HC_VIRTUAL_CABLE_UNPLUG: - bt_hid_disconnect(s); - break; - default: - ret = BT_HS_ERR_INVALID_PARAMETER; - } - break; - - case BT_GET_REPORT: - /* No ReportIDs declared. */ - if (((parameter & 8) && len != 3) || - (!(parameter & 8) && len != 1) || - s->state != bt_state_ready) { - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - } - if (parameter & 8) - rlen = data[2] | (data[3] << 8); - else - rlen = INT_MAX; - switch (parameter & 3) { - case BT_DATA_OTHER: - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - case BT_DATA_INPUT: - /* Here we can as well poll s->usbdev */ - bt_hid_send_data(s->control, BT_DATA_INPUT, - s->datain.buffer, MIN(rlen, s->datain.len)); - break; - case BT_DATA_OUTPUT: - bt_hid_send_data(s->control, BT_DATA_OUTPUT, - s->dataout.buffer, MIN(rlen, s->dataout.len)); - break; - case BT_DATA_FEATURE: - bt_hid_send_data(s->control, BT_DATA_FEATURE, - s->feature.buffer, MIN(rlen, s->feature.len)); - break; - } - break; - - case BT_SET_REPORT: - if (len < 2 || len > BT_HID_MTU || s->state != bt_state_ready || - (parameter & 3) == BT_DATA_OTHER || - (parameter & 3) == BT_DATA_INPUT) { - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - } - s->data_type = parameter & 3; - if (s->data_type == BT_DATA_OUTPUT) { - s->dataout.len = len - 1; - memcpy(s->dataout.buffer, data + 1, s->dataout.len); - } else { - s->feature.len = len - 1; - memcpy(s->feature.buffer, data + 1, s->feature.len); - } - if (len == BT_HID_MTU) - s->state = bt_state_transaction; - else - bt_hid_out(s); - break; - - case BT_GET_PROTOCOL: - if (len != 1 || s->state == bt_state_transaction) { - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - } - *s->control->sdu_out(s->control, 1) = s->proto; - s->control->sdu_submit(s->control); - break; - - case BT_SET_PROTOCOL: - if (len != 1 || s->state == bt_state_transaction || - (parameter != BT_HID_PROTO_BOOT && - parameter != BT_HID_PROTO_REPORT)) { - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - } - s->proto = parameter; - s->hid.protocol = parameter; - ret = BT_HS_SUCCESSFUL; - break; - - case BT_GET_IDLE: - if (len != 1 || s->state == bt_state_transaction) { - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - } - *s->control->sdu_out(s->control, 1) = s->hid.idle; - s->control->sdu_submit(s->control); - break; - - case BT_SET_IDLE: - if (len != 2 || s->state == bt_state_transaction) { - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - } - - s->hid.idle = data[1]; - /* XXX: Does this generate a handshake? */ - break; - - case BT_DATC: - if (len > BT_HID_MTU || s->state != bt_state_transaction) { - ret = BT_HS_ERR_INVALID_PARAMETER; - break; - } - if (s->data_type == BT_DATA_OUTPUT) { - memcpy(s->dataout.buffer + s->dataout.len, data + 1, len - 1); - s->dataout.len += len - 1; - } else { - memcpy(s->feature.buffer + s->feature.len, data + 1, len - 1); - s->feature.len += len - 1; - } - if (len < BT_HID_MTU) { - bt_hid_out(s); - s->state = bt_state_ready; - } - break; - - default: - ret = BT_HS_ERR_UNSUPPORTED_REQUEST; - } - - if (ret != -1) - bt_hid_send_handshake(s, ret); -} - -static void bt_hid_control_sdu(void *opaque, const uint8_t *data, int len) -{ - struct bt_hid_device_s *hid = opaque; - - bt_hid_control_transaction(hid, data, len); -} - -static void bt_hid_datain(HIDState *hs) -{ - struct bt_hid_device_s *hid = - container_of(hs, struct bt_hid_device_s, hid); - - /* If suspended, wake-up and send a wake-up event first. We might - * want to also inspect the input report and ignore event like - * mouse movements until a button event occurs. */ - if (hid->state == bt_state_suspend) { - hid->state = bt_state_ready; - } - - if (bt_hid_in(hid) > 0) - /* TODO: when in boot-mode precede any Input reports with the ReportID - * byte, here and in GetReport/SetReport on the Control channel. */ - bt_hid_send_data(hid->interrupt, BT_DATA_INPUT, - hid->datain.buffer, hid->datain.len); -} - -static void bt_hid_interrupt_sdu(void *opaque, const uint8_t *data, int len) -{ - struct bt_hid_device_s *hid = opaque; - - if (len > BT_HID_MTU || len < 1) - goto bad; - if ((data[0] & 3) != BT_DATA_OUTPUT) - goto bad; - if ((data[0] >> 4) == BT_DATA) { - if (hid->intr_state) - goto bad; - - hid->data_type = BT_DATA_OUTPUT; - hid->intrdataout.len = 0; - } else if ((data[0] >> 4) == BT_DATC) { - if (!hid->intr_state) - goto bad; - } else - goto bad; - - memcpy(hid->intrdataout.buffer + hid->intrdataout.len, data + 1, len - 1); - hid->intrdataout.len += len - 1; - hid->intr_state = (len == BT_HID_MTU); - if (!hid->intr_state) { - memcpy(hid->dataout.buffer, hid->intrdataout.buffer, - hid->dataout.len = hid->intrdataout.len); - bt_hid_out(hid); - } - - return; -bad: - error_report("%s: bad transaction on Interrupt channel.", - __func__); -} - -/* "Virtual cable" plug/unplug event. */ -static void bt_hid_connected_update(struct bt_hid_device_s *hid) -{ - int prev = hid->connected; - - hid->connected = hid->control && hid->interrupt; - - /* Stop page-/inquiry-scanning when a host is connected. */ - hid->btdev.device.page_scan = !hid->connected; - hid->btdev.device.inquiry_scan = !hid->connected; - - if (hid->connected && !prev) { - hid_reset(&hid->hid); - hid->proto = BT_HID_PROTO_REPORT; - } - - /* Should set HIDVirtualCable in SDP (possibly need to check that SDP - * isn't destroyed yet, in case we're being called from handle_destroy) */ -} - -static void bt_hid_close_control(void *opaque) -{ - struct bt_hid_device_s *hid = opaque; - - hid->control = NULL; - bt_hid_connected_update(hid); -} - -static void bt_hid_close_interrupt(void *opaque) -{ - struct bt_hid_device_s *hid = opaque; - - hid->interrupt = NULL; - bt_hid_connected_update(hid); -} - -static int bt_hid_new_control_ch(struct bt_l2cap_device_s *dev, - struct bt_l2cap_conn_params_s *params) -{ - struct bt_hid_device_s *hid = (struct bt_hid_device_s *) dev; - - if (hid->control) - return 1; - - hid->control = params; - hid->control->opaque = hid; - hid->control->close = bt_hid_close_control; - hid->control->sdu_in = bt_hid_control_sdu; - - bt_hid_connected_update(hid); - - return 0; -} - -static int bt_hid_new_interrupt_ch(struct bt_l2cap_device_s *dev, - struct bt_l2cap_conn_params_s *params) -{ - struct bt_hid_device_s *hid = (struct bt_hid_device_s *) dev; - - if (hid->interrupt) - return 1; - - hid->interrupt = params; - hid->interrupt->opaque = hid; - hid->interrupt->close = bt_hid_close_interrupt; - hid->interrupt->sdu_in = bt_hid_interrupt_sdu; - - bt_hid_connected_update(hid); - - return 0; -} - -static void bt_hid_destroy(struct bt_device_s *dev) -{ - struct bt_hid_device_s *hid = (struct bt_hid_device_s *) dev; - - if (hid->connected) - bt_hid_send_control(hid, BT_HC_VIRTUAL_CABLE_UNPLUG); - bt_l2cap_device_done(&hid->btdev); - - hid_free(&hid->hid); - - g_free(hid); -} - -enum peripheral_minor_class { - class_other = 0 << 4, - class_keyboard = 1 << 4, - class_pointing = 2 << 4, - class_combo = 3 << 4, -}; - -static struct bt_device_s *bt_hid_init(struct bt_scatternet_s *net, - enum peripheral_minor_class minor) -{ - struct bt_hid_device_s *s = g_malloc0(sizeof(*s)); - uint32_t class = - /* Format type */ - (0 << 0) | - /* Device class */ - (minor << 2) | - (5 << 8) | /* "Peripheral" */ - /* Service classes */ - (1 << 13) | /* Limited discoverable mode */ - (1 << 19); /* Capturing device (?) */ - - bt_l2cap_device_init(&s->btdev, net); - bt_l2cap_sdp_init(&s->btdev); - bt_l2cap_psm_register(&s->btdev, BT_PSM_HID_CTRL, - BT_HID_MTU, bt_hid_new_control_ch); - bt_l2cap_psm_register(&s->btdev, BT_PSM_HID_INTR, - BT_HID_MTU, bt_hid_new_interrupt_ch); - - hid_init(&s->hid, HID_KEYBOARD, bt_hid_datain); - s->btdev.device.lmp_name = "BT Keyboard"; - - s->btdev.device.handle_destroy = bt_hid_destroy; - - s->btdev.device.class[0] = (class >> 0) & 0xff; - s->btdev.device.class[1] = (class >> 8) & 0xff; - s->btdev.device.class[2] = (class >> 16) & 0xff; - - return &s->btdev.device; -} - -struct bt_device_s *bt_keyboard_init(struct bt_scatternet_s *net) -{ - return bt_hid_init(net, class_keyboard); -} |