raiden00pl commented on code in PR #8794: URL: https://github.com/apache/nuttx/pull/8794#discussion_r1133090550
########## drivers/wireless/bluetooth/bt_rpmsghci_server.c: ########## @@ -0,0 +1,547 @@ +/**************************************************************************** + * drivers/wireless/bluetooth/bt_rpmsghci_server.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <sys/param.h> + +#include <assert.h> +#include <debug.h> +#include <stdlib.h> + +#include <nuttx/rptun/openamp.h> + +#include "bt_rpmsghci.h" + +/**************************************************************************** + * Pre-processor definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct rpmsghci_server_s +{ + struct rpmsg_endpoint ept; + FAR struct bt_driver_s *btdev; + FAR const char *name; + struct work_s work; +}; + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +static int rpmsghci_open_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv); +static int rpmsghci_close_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv); +static int rpmsghci_send_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv); +static int rpmsghci_ioctl_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv); +static int rpmsghci_default_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv); + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static const rpmsg_ept_cb g_rpmsghci_handler[] = +{ + rpmsghci_open_handler, /* RPMSGHCI_OPEN */ + rpmsghci_close_handler, /* RPMSGHCI_CLOSE */ + rpmsghci_send_handler, /* RPMSGHCI_SEND */ + rpmsghci_ioctl_handler, /* RPMSGHCI_IOCTL */ + rpmsghci_default_handler, /* RPMSGHCI_RECV */ +}; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: rpmsghci_get_tx_payload_buffer + ****************************************************************************/ + +static FAR void * +rpmsghci_get_tx_payload_buffer(FAR struct rpmsghci_server_s *priv, + FAR uint32_t *len) +{ + return rpmsg_get_tx_payload_buffer(&priv->ept, len, true); +} + +/**************************************************************************** + * Name: rpmsghci_send + * + * Description: + * Send the rpmsg data and wait for ACK. + * + * Parameters: + * priv - rpmsg device handle + * command - the command, RPMSGHCI_OPEN, RPMSGHCI_CLOSE, RPMSGHCI_SEND, + * RPMSGHCI_IOCTL + * msg - the message header + * len - length of the payload + * + * Returned Values: + * OK on success; A negated errno value is returned on any failure. + * + ****************************************************************************/ + +static int rpmsghci_send(FAR struct rpmsghci_server_s *priv, + uint32_t command, FAR struct rpmsghci_header_s *msg, + int len) +{ + struct rpmsghci_cookie_s cookie; + int ret = OK; + + memset(&cookie, 0, sizeof(struct rpmsghci_cookie_s)); + nxsem_init(&cookie.sem, 0, 0); + + msg->command = command; + msg->result = -ENXIO; + msg->cookie = (uintptr_t)&cookie; + + ret = rpmsg_send_nocopy(&priv->ept, msg, len); + if (ret < 0) + { + goto errout; + } + + ret = rpmsg_wait(&priv->ept, &cookie.sem); + if (ret >= 0) + { + ret = msg->result; + } + +errout: + nxsem_destroy(&cookie.sem); + return ret; +} + +/**************************************************************************** + * Name: rpmsghci_open_handler + * + * Description: + * Rpmsg-HCI device open handler. + * + * Parameters: + * ept - The rpmsg endpoint + * data - The return message + * len - The return message length + * src - unknow + * priv - unknow + * + * Returned Values: + * OK on success; A negated errno value is returned on any failure. + * + ****************************************************************************/ + +static int rpmsghci_open_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv) +{ + FAR struct rpmsghci_server_s *server = NULL; + FAR struct bt_driver_s *btdev = NULL; + FAR struct rpmsghci_data_s *msg = data; + int ret = OK; + + DEBUGASSERT(priv); + server = priv; + DEBUGASSERT(server->btdev); + btdev = server->btdev; + + if (btdev->open) + { + ret = btdev->open(btdev); + } + + msg->header.result = ret; + + return rpmsg_send(ept, msg, len); +} + +/**************************************************************************** + * Name: rpmsghci_close_handler + * + * Description: + * Rpmsg-HCI close handler. + * + * Parameters: + * ept - The rpmsg endpoint + * data - The return message + * len - The return message length + * src - unknow + * priv - unknow + * + * Returned Values: + * OK on success; A negated errno value is returned on any failure. + * + ****************************************************************************/ + +static int rpmsghci_close_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv) +{ + FAR struct rpmsghci_server_s *server = NULL; + FAR struct bt_driver_s *btdev = NULL; + FAR struct rpmsghci_data_s *msg = data; + int ret = OK; + + DEBUGASSERT(priv); + server = priv; + DEBUGASSERT(server->btdev); + btdev = server->btdev; + + if (btdev->close) + { + btdev->close(btdev); + } + + msg->header.result = ret; + + return rpmsg_send(ept, msg, len); +} + +/**************************************************************************** + * Name: rpmsghci_send_handler + * + * Description: + * Rpmsg-HCI send handler. + * + * Parameters: + * ept - The rpmsg endpoint + * data - The return message + * len - The return message length + * src - unknow + * priv - unknow + * + * Returned Values: + * OK on success; A negated errno value is returned on any failure. + * + ****************************************************************************/ + +static int rpmsghci_send_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv) +{ + FAR struct rpmsghci_server_s *server = NULL; + FAR struct bt_driver_s *btdev = NULL; + FAR struct rpmsghci_data_s *msg = data; + int ret = OK; + + DEBUGASSERT(priv); + server = priv; + DEBUGASSERT(server->btdev); + btdev = server->btdev; + + wlinfo("rpmsghci_send_handler %d\n", msg->type); + + ret = btdev->send(btdev, msg->type, msg->data, + len - sizeof(struct rpmsghci_data_s) + 1); + + msg->header.result = ret; + + return rpmsg_send(ept, msg, len); +} + +/**************************************************************************** + * Name: rpmsghci_ioctl_handler + * + * Description: + * Rpmsg-HCI ioctl handler. + * + * Parameters: + * ept - The rpmsg endpoint + * data - The return message + * len - The return message length + * src - unknow + * priv - unknow + * + * Returned Values: + * OK on success; A negated errno value is returned on any failure. + * + ****************************************************************************/ + +static int rpmsghci_ioctl_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv) +{ + FAR struct rpmsghci_server_s *server = NULL; + FAR struct bt_driver_s *btdev = NULL; + FAR struct rpmsghci_ioctl_s *msg = data; + int ret = OK; + + DEBUGASSERT(priv); + server = priv; + DEBUGASSERT(server->btdev); + btdev = server->btdev; + + ret = btdev->ioctl(btdev, msg->request, + msg->arglen > 0 ? (unsigned long)msg->buf : + msg->arg); + + msg->header.result = ret; + + return rpmsg_send(ept, msg, len); +} + +/**************************************************************************** + * Name: rpmsghci_default_handler + * + * Description: + * Default rpmsg-HCI response handler, this function will be called to + * process the return message of rpmsghci_recv() + * + * Parameters: + * ept - The rpmsg endpoint + * data - The return message + * len - The return message length + * src - unknow + * priv - unknow + * + * Returned Values: + * Always OK + * + ****************************************************************************/ + +static int rpmsghci_default_handler(FAR struct rpmsg_endpoint *ept, + FAR void *data, size_t len, + uint32_t src, FAR void *priv) +{ + FAR struct rpmsghci_header_s *header = data; + FAR struct rpmsghci_cookie_s *cookie = NULL; + + if (header->cookie != 0) + { + cookie = (FAR struct rpmsghci_cookie_s *)(uintptr_t)header->cookie; + return rpmsg_post(ept, &cookie->sem); + } + + return 0; +} + +/**************************************************************************** + * Name: rpmsghci_ns_match + * + * Description: + * Check if we match to the rpmsg name service. + * + ****************************************************************************/ + +static bool rpmsghci_ns_match(FAR struct rpmsg_device *rdev, FAR void *priv, + FAR const char *name, uint32_t dest) +{ + return !strncmp(name, RPMSGHCI_NAME_PREFIX, RPMSGHCI_NAME_PREFIX_LEN); +} + +/**************************************************************************** + * Name: rpmsghci_ept_cb + * + * Description: + * Rpmsg HCI end point callback function, this function will be called + * when receive the client cpu message. + * + * Parameters: + * ept - The rpmsg-HCI end point + * data - The received data + * len - The received data length + * src - unknow + * priv - unknow + * + * Returned Values: + * OK on success; A negated errno value is returned on any failure. + * + ****************************************************************************/ + +static int rpmsghci_ept_cb(FAR struct rpmsg_endpoint *ept, FAR void *data, + size_t len, uint32_t src, FAR void *priv) +{ + FAR struct rpmsghci_header_s *header = data; + uint32_t command = header->command; + + if (command < nitems(g_rpmsghci_handler)) + { + return g_rpmsghci_handler[command](ept, data, len, src, priv); + } + + return -EINVAL; +} + +/**************************************************************************** + * Name: rpmsghci_ns_unbind + * + * Description: + * Unbind from the rpmsg name service. + * + ****************************************************************************/ + +static void rpmsghci_ns_unbind(FAR struct rpmsg_endpoint *ept) +{ + rpmsg_destroy_ept(ept); + + kmm_free(ept); +} + +/**************************************************************************** + * Name: rpmsghci_ns_bind + * + * Description: + * Bind to the rpmsg name service. + * + ****************************************************************************/ + +static void rpmsghci_ns_bind(FAR struct rpmsg_device *rdev, FAR void *priv, + FAR const char *name, uint32_t dest) +{ + FAR struct rpmsghci_server_s *server = priv; + + server->ept.priv = priv; + rpmsg_create_ept(&server->ept, rdev, name, + RPMSG_ADDR_ANY, dest, + rpmsghci_ept_cb, rpmsghci_ns_unbind); +} + +/**************************************************************************** + * Name: rpmsghci_bt_receive + * + * Description: + * Called by the Bluetooth low-level driver when new data is received from + * the radio. Transfers data to the RPMSG client. + * + * This callback should not be called from the interrupt context ! + * + * Returned Value: + * OK on success; A negated errno value is returned on any failure. + * + ****************************************************************************/ + +int rpmsghci_bt_receive(FAR struct bt_driver_s *btdev, Review Comment: Due to the fact it is a replacement for `wireless/bluetooth/bt_hcicore.c::bt_receive()`, it's better to keep format `xxx_bt_receive()` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
