1 /* 2 * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved. 3 * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for 6 * any purpose with or without fee is hereby granted, provided that the 7 * above copyright notice and this permission notice appear in all 8 * copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 11 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 12 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 13 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 14 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 15 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 16 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17 * PERFORMANCE OF THIS SOFTWARE. 18 */ 19 /** 20 * DOC: wifi_pos_utils.c 21 * This file defines the utility helper functions for wifi_pos component. 22 */ 23 24 #include "qdf_types.h" 25 #include "wlan_objmgr_cmn.h" 26 #include "wlan_objmgr_global_obj.h" 27 #include "wlan_objmgr_psoc_obj.h" 28 #include <wlan_lmac_if_def.h> 29 #include "wifi_pos_utils_i.h" 30 #include "wlan_objmgr_vdev_obj.h" 31 32 33 /* lock to protect use of psoc global pointer variable */ 34 static qdf_spinlock_t psoc_ptr_lock; 35 36 /* 37 * WIFI pos command are not associated with any pdev/psoc/vdev, so the callback 38 * registered with GENL socket does not receive any pdev/pdev/vdev object. 39 * Since PSOC is top most object, it was decided to keep WIFI POS private obj 40 * within PSOC and hence, this module need to hang on to the first PSOC that 41 * was created for all its internal usage. 42 */ 43 static struct wlan_objmgr_psoc *wifi_pos_psoc_obj; 44 45 struct wlan_objmgr_vdev; 46 struct wifi_pos_psoc_priv_obj; 47 48 void wifi_pos_lock_init(void) 49 { 50 qdf_spinlock_create(&psoc_ptr_lock); 51 } 52 53 void wifi_pos_lock_deinit(void) 54 { 55 qdf_spinlock_destroy(&psoc_ptr_lock); 56 } 57 58 struct wlan_objmgr_psoc *wifi_pos_get_psoc(void) 59 { 60 struct wlan_objmgr_psoc *tmp; 61 62 qdf_spin_lock_bh(&psoc_ptr_lock); 63 tmp = wifi_pos_psoc_obj; 64 qdf_spin_unlock_bh(&psoc_ptr_lock); 65 66 return tmp; 67 } 68 69 qdf_export_symbol(wifi_pos_get_psoc); 70 71 void wifi_pos_set_psoc(struct wlan_objmgr_psoc *psoc) 72 { 73 struct wlan_objmgr_psoc *tmp; 74 75 qdf_spin_lock_bh(&psoc_ptr_lock); 76 tmp = wifi_pos_psoc_obj; 77 if (!wifi_pos_psoc_obj) 78 wifi_pos_psoc_obj = psoc; 79 qdf_spin_unlock_bh(&psoc_ptr_lock); 80 81 if (tmp) 82 wifi_pos_warn("global psoc obj already set"); 83 } 84 85 void wifi_pos_clear_psoc(void) 86 { 87 struct wlan_objmgr_psoc *tmp; 88 89 qdf_spin_lock_bh(&psoc_ptr_lock); 90 tmp = wifi_pos_psoc_obj; 91 if (wifi_pos_psoc_obj) 92 wifi_pos_psoc_obj = NULL; 93 qdf_spin_unlock_bh(&psoc_ptr_lock); 94 95 if (!tmp) 96 wifi_pos_warn("global psoc obj already cleared"); 97 } 98 99 /** 100 * wifi_pos_get_psoc_priv_obj: returns wifi_pos priv object within psoc 101 * @psoc: pointer to psoc object 102 * 103 * Return: wifi_pos_psoc_priv_obj 104 */ 105 struct wifi_pos_psoc_priv_obj *wifi_pos_get_psoc_priv_obj( 106 struct wlan_objmgr_psoc *psoc) 107 { 108 struct wifi_pos_psoc_priv_obj *obj; 109 110 obj = (struct wifi_pos_psoc_priv_obj *)wlan_objmgr_psoc_get_comp_private_obj(psoc, 111 WLAN_UMAC_COMP_WIFI_POS); 112 113 return obj; 114 } 115 116 qdf_export_symbol(wifi_pos_get_psoc_priv_obj); 117 118 struct wifi_pos_vdev_priv_obj * 119 wifi_pos_get_vdev_priv_obj(struct wlan_objmgr_vdev *vdev) 120 { 121 struct wifi_pos_vdev_priv_obj *vdev_obj; 122 123 vdev_obj = (struct wifi_pos_vdev_priv_obj *)wlan_objmgr_vdev_get_comp_private_obj( 124 vdev, 125 WLAN_UMAC_COMP_WIFI_POS); 126 127 return vdev_obj; 128 } 129 130 qdf_export_symbol(wifi_pos_get_vdev_priv_obj); 131