| /* |
| ************************************************************************** |
| * Copyright (c) 2017, The Linux Foundation. All rights reserved. |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all copies. |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| ************************************************************************** |
| */ |
| |
| #include "nss_tx_rx_common.h" |
| |
| #define NSS_WIFILI_TX_TIMEOUT 1000 /* Millisecond to jiffies*/ |
| |
| /* |
| * nss_wifili_pvt |
| * Private data structure |
| */ |
| static struct nss_wifili_pvt { |
| struct semaphore sem; |
| struct completion complete; |
| int response; |
| void *cb; |
| void *app_data; |
| } wifili_pvt; |
| |
| /* |
| * nss_wifili_stats_sync() |
| * Handle the syncing of WIFI stats. |
| */ |
| static void nss_wifili_stats_sync(struct nss_ctx_instance *nss_ctx, |
| struct nss_wifili_stats_sync_msg *stats, uint16_t interface) |
| { |
| return; |
| } |
| |
| /* |
| * nss_wifili_handler() |
| * Handle NSS -> HLOS messages for wifi |
| */ |
| static void nss_wifili_handler(struct nss_ctx_instance *nss_ctx, struct nss_cmn_msg *ncm, __attribute__((unused))void *app_data) |
| { |
| struct nss_wifili_msg *ntm = (struct nss_wifili_msg *)ncm; |
| void *ctx; |
| nss_wifili_msg_callback_t cb; |
| |
| nss_info("%p: NSS->HLOS message for wifili\n", nss_ctx); |
| |
| /* |
| * The interface number shall be wifili soc interface or wifili radio interface |
| */ |
| BUG_ON((nss_is_dynamic_interface(ncm->interface)) || ncm->interface != NSS_WIFILI_INTERFACE); |
| |
| /* |
| * Is this a valid request/response packet? |
| */ |
| if (ncm->type >= NSS_WIFILI_MAX_MSG) { |
| nss_warning("%p: Received invalid message %d for wifili interface", nss_ctx, ncm->type); |
| return; |
| } |
| |
| if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_wifili_msg)) { |
| nss_warning("%p: Length of message is greater than required: %d", nss_ctx, nss_cmn_get_msg_len(ncm)); |
| return; |
| } |
| |
| /* |
| * Snoop messages for local driver and handle |
| */ |
| switch (ntm->cm.type) { |
| case NSS_WIFILI_PDEV_STATS_SYNC_MSG: |
| nss_wifili_stats_sync(nss_ctx, &ntm->msg.wlsoc_stats, ncm->interface); |
| break; |
| } |
| |
| /* |
| * Update the callback and app_data for notify messages, wifili sends all notify messages |
| * to the same callback/app_data. |
| */ |
| if (ncm->response == NSS_CMM_RESPONSE_NOTIFY) { |
| ncm->cb = (nss_ptr_t)nss_ctx->nss_top->wifili_msg_callback; |
| } |
| |
| /* |
| * Log failures |
| */ |
| nss_core_log_msg_failures(nss_ctx, ncm); |
| |
| /* |
| * Do we have a call back |
| */ |
| if (!ncm->cb) { |
| nss_info("%p: cb null for wifili interface %d", nss_ctx, ncm->interface); |
| return; |
| } |
| |
| /* |
| * Get callback & context |
| */ |
| cb = (nss_wifili_msg_callback_t)ncm->cb; |
| ctx = nss_ctx->subsys_dp_register[ncm->interface].ndev; |
| |
| /* |
| * call wifili msg callback |
| */ |
| if (!ctx) { |
| nss_warning("%p: Event received for wifili interface %d before registration", nss_ctx, ncm->interface); |
| return; |
| } |
| |
| cb(ctx, ntm); |
| } |
| |
| /* |
| * nss_wifili_callback() |
| * Callback to handle the completion of NSS->HLOS messages. |
| */ |
| static void nss_wifili_callback(void *app_data, struct nss_wifili_msg *nvm) |
| { |
| nss_wifili_msg_callback_t callback = (nss_wifili_msg_callback_t)wifili_pvt.cb; |
| void *data = wifili_pvt.app_data; |
| |
| wifili_pvt.response = NSS_TX_SUCCESS; |
| wifili_pvt.cb = NULL; |
| wifili_pvt.app_data = NULL; |
| |
| if (nvm->cm.response != NSS_CMN_RESPONSE_ACK) { |
| nss_warning("wifili error response %d\n", nvm->cm.response); |
| wifili_pvt.response = nvm->cm.response; |
| } |
| |
| if (callback) { |
| callback(data, nvm); |
| } |
| complete(&wifili_pvt.complete); |
| } |
| |
| /* |
| * nss_wifili_tx_msg |
| * Transmit a wifili message to NSS FW |
| * |
| * NOTE: The caller is expected to handle synchronous wait for message |
| * response if needed. |
| */ |
| nss_tx_status_t nss_wifili_tx_msg(struct nss_ctx_instance *nss_ctx, struct nss_wifili_msg *msg) |
| { |
| struct nss_wifili_msg *nm; |
| struct nss_cmn_msg *ncm = &msg->cm; |
| struct sk_buff *nbuf; |
| int32_t status; |
| |
| NSS_VERIFY_CTX_MAGIC(nss_ctx); |
| |
| if (unlikely(nss_ctx->state != NSS_CORE_STATE_INITIALIZED)) { |
| nss_warning("%p: wifili message dropped as core not ready", nss_ctx); |
| return NSS_TX_FAILURE_NOT_READY; |
| } |
| |
| if (ncm->type >= NSS_WIFILI_MAX_MSG) { |
| nss_warning("%p: wifili message type out of range: %d", nss_ctx, ncm->type); |
| return NSS_TX_FAILURE; |
| } |
| |
| if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_wifili_msg)) { |
| nss_warning("%p: wifili message length is invalid: %d", nss_ctx, nss_cmn_get_msg_len(ncm)); |
| return NSS_TX_FAILURE; |
| } |
| |
| /* |
| * The interface number shall be wifili soc interface or wifili radio interface |
| */ |
| if (ncm->interface != NSS_WIFILI_INTERFACE) { |
| nss_warning("%p: tx request for interface that is not a wifili: %d", nss_ctx, ncm->interface); |
| return NSS_TX_FAILURE; |
| } |
| |
| nbuf = dev_alloc_skb(NSS_NBUF_PAYLOAD_SIZE); |
| if (unlikely(!nbuf)) { |
| spin_lock_bh(&nss_ctx->nss_top->stats_lock); |
| NSS_PKT_STATS_INCREMENT(nss_ctx, &nss_ctx->nss_top->stats_drv[NSS_STATS_DRV_NBUF_ALLOC_FAILS]); |
| spin_unlock_bh(&nss_ctx->nss_top->stats_lock); |
| nss_warning("%p: wifili message failed as command allocation failed", nss_ctx); |
| return NSS_TX_FAILURE; |
| } |
| |
| /* |
| * Copy the message to our skb |
| */ |
| nm = (struct nss_wifili_msg *)skb_put(nbuf, sizeof(struct nss_wifili_msg)); |
| memcpy(nm, msg, sizeof(struct nss_wifili_msg)); |
| |
| status = nss_core_send_buffer(nss_ctx, 0, nbuf, NSS_IF_CMD_QUEUE, H2N_BUFFER_CTRL, 0); |
| if (status != NSS_CORE_STATUS_SUCCESS) { |
| dev_kfree_skb_any(nbuf); |
| nss_warning("%p: Unable to enqueue 'wifili message'", nss_ctx); |
| return NSS_TX_FAILURE; |
| } |
| |
| nss_hal_send_interrupt(nss_ctx, NSS_H2N_INTR_DATA_COMMAND_QUEUE); |
| |
| NSS_PKT_STATS_INCREMENT(nss_ctx, &nss_ctx->nss_top->stats_drv[NSS_STATS_DRV_TX_CMD_REQ]); |
| |
| return NSS_TX_SUCCESS; |
| } |
| EXPORT_SYMBOL(nss_wifili_tx_msg); |
| |
| /* |
| * nss_wifili_tx_msg_sync() |
| * Transmit a wifili message to NSS firmware synchronously. |
| */ |
| nss_tx_status_t nss_wifili_tx_msg_sync(struct nss_ctx_instance *nss_ctx, struct nss_wifili_msg *nvm) |
| { |
| nss_tx_status_t status; |
| int ret = 0; |
| |
| down(&wifili_pvt.sem); |
| wifili_pvt.cb = (void *)nvm->cm.cb; |
| wifili_pvt.app_data = (void *)nvm->cm.app_data; |
| |
| nvm->cm.cb = (nss_ptr_t)nss_wifili_callback; |
| nvm->cm.app_data = (nss_ptr_t)NULL; |
| |
| status = nss_wifili_tx_msg(nss_ctx, nvm); |
| if (status != NSS_TX_SUCCESS) { |
| nss_warning("%p: wifili_tx_msg failed\n", nss_ctx); |
| up(&wifili_pvt.sem); |
| return status; |
| } |
| |
| ret = wait_for_completion_timeout(&wifili_pvt.complete, msecs_to_jiffies(NSS_WIFILI_TX_TIMEOUT)); |
| if (!ret) { |
| nss_warning("%p: wifili msg tx failed due to timeout\n", nss_ctx); |
| wifili_pvt.response = NSS_TX_FAILURE; |
| } |
| |
| status = wifili_pvt.response; |
| up(&wifili_pvt.sem); |
| return status; |
| } |
| EXPORT_SYMBOL(nss_wifili_tx_msg_sync); |
| |
| /* |
| * nss_wifili_get_context() |
| */ |
| struct nss_ctx_instance *nss_wifili_get_context(void) |
| { |
| return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id]; |
| } |
| EXPORT_SYMBOL(nss_wifili_get_context); |
| |
| /* |
| * nss_wifili_msg_init() |
| * Initialize nss_wifili_msg. |
| */ |
| void nss_wifili_msg_init(struct nss_wifili_msg *ncm, uint16_t if_num, uint32_t type, uint32_t len, void *cb, void *app_data) |
| { |
| nss_cmn_msg_init(&ncm->cm, if_num, type, len, cb, app_data); |
| } |
| EXPORT_SYMBOL(nss_wifili_msg_init); |
| |
| /* |
| **************************************** |
| * Register/Unregister/Miscellaneous APIs |
| **************************************** |
| */ |
| |
| /* |
| * nss_register_wifili_if() |
| * Register wifili with nss driver |
| */ |
| struct nss_ctx_instance *nss_register_wifili_if(uint32_t if_num, nss_wifili_callback_t wifili_callback, |
| nss_wifili_callback_t wifili_ext_callback, |
| nss_wifili_msg_callback_t event_callback, struct net_device *netdev, uint32_t features) |
| { |
| struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id]; |
| |
| /* |
| * The interface number shall be wifili soc interface |
| */ |
| nss_assert(if_num == NSS_WIFILI_INTERFACE); |
| |
| nss_info("nss_register_wifili_if if_num %d wifictx %p", if_num, netdev); |
| |
| nss_ctx->subsys_dp_register[if_num].ndev = netdev; |
| nss_ctx->subsys_dp_register[if_num].cb = wifili_callback; |
| nss_ctx->subsys_dp_register[if_num].ext_cb = wifili_ext_callback; |
| nss_ctx->subsys_dp_register[if_num].app_data = NULL; |
| nss_ctx->subsys_dp_register[if_num].features = features; |
| |
| nss_top_main.wifili_msg_callback = event_callback; |
| nss_core_register_handler(if_num, nss_wifili_handler, NULL); |
| |
| return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id]; |
| } |
| EXPORT_SYMBOL(nss_register_wifili_if); |
| |
| /* |
| * nss_unregister_wifili_if() |
| * Unregister wifili with nss driver |
| */ |
| void nss_unregister_wifili_if(uint32_t if_num) |
| { |
| struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id]; |
| |
| /* |
| * The interface number shall be wifili soc interface |
| */ |
| nss_assert(if_num == NSS_WIFILI_INTERFACE); |
| |
| nss_ctx->subsys_dp_register[if_num].ndev = NULL; |
| nss_ctx->subsys_dp_register[if_num].cb = NULL; |
| nss_ctx->subsys_dp_register[if_num].ext_cb = NULL; |
| nss_ctx->subsys_dp_register[if_num].app_data = NULL; |
| nss_ctx->subsys_dp_register[if_num].features = 0; |
| } |
| EXPORT_SYMBOL(nss_unregister_wifili_if); |
| |
| /* |
| * nss_register_wifili_radio_if() |
| * Register wifili radio with nss driver |
| */ |
| struct nss_ctx_instance *nss_register_wifili_radio_if(uint32_t if_num, nss_wifili_callback_t wifili_callback, |
| nss_wifili_callback_t wifili_ext_callback, |
| nss_wifili_msg_callback_t event_callback, struct net_device *netdev, uint32_t features) |
| { |
| struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id]; |
| |
| /* |
| * The interface number shall be wifili radio dynamic interface |
| */ |
| nss_assert(nss_is_dynamic_interface(if_num)); |
| nss_info("nss_register_wifili_if if_num %d wifictx %p", if_num, netdev); |
| |
| nss_ctx->subsys_dp_register[if_num].ndev = netdev; |
| nss_ctx->subsys_dp_register[if_num].cb = wifili_callback; |
| nss_ctx->subsys_dp_register[if_num].ext_cb = wifili_ext_callback; |
| nss_ctx->subsys_dp_register[if_num].app_data = NULL; |
| nss_ctx->subsys_dp_register[if_num].features = features; |
| |
| return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id]; |
| } |
| EXPORT_SYMBOL(nss_register_wifili_radio_if); |
| |
| /* |
| * nss_unregister_wifili_radio_if() |
| * Unregister wifili radio with nss driver |
| */ |
| void nss_unregister_wifili_radio_if(uint32_t if_num) |
| { |
| struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id]; |
| |
| /* |
| * The interface number shall be wifili radio dynamic interface |
| */ |
| nss_assert(nss_is_dynamic_interface(if_num)); |
| |
| nss_ctx->subsys_dp_register[if_num].ndev = NULL; |
| nss_ctx->subsys_dp_register[if_num].cb = NULL; |
| nss_ctx->subsys_dp_register[if_num].ext_cb = NULL; |
| nss_ctx->subsys_dp_register[if_num].app_data = NULL; |
| nss_ctx->subsys_dp_register[if_num].features = 0; |
| } |
| EXPORT_SYMBOL(nss_unregister_wifili_radio_if); |
| |
| /* |
| * nss_wifili_register_handler() |
| * Register handle for notfication messages received on wifi interface |
| */ |
| void nss_wifili_register_handler(void ) |
| { |
| nss_info("nss_wifili_register_handler"); |
| nss_core_register_handler(NSS_WIFILI_INTERFACE, nss_wifili_handler, NULL); |
| |
| sema_init(&wifili_pvt.sem, 1); |
| init_completion(&wifili_pvt.complete); |
| } |