1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /* Copyright(c) 2018-2019  Realtek Corporation
11 	/* if default key search is enabled, the first 4 cam entries  in rtw_sec_get_free_cam()
12 	 * are used to direct map to group key with its key->key_idx, so  in rtw_sec_get_free_cam()
13 	 * driver should use cam entries after 4 to install pairwise key  in rtw_sec_get_free_cam()
15 	if (sec->default_key_search)  in rtw_sec_get_free_cam()
16 		return find_next_zero_bit(sec->cam_map, RTW_MAX_SEC_CAM_NUM,  in rtw_sec_get_free_cam()
19 	return find_first_zero_bit(sec->cam_map, RTW_MAX_SEC_CAM_NUM);  in rtw_sec_get_free_cam()
28 	struct rtw_cam_entry *cam = &sec->cam_table[hw_key_idx];  in rtw_sec_write_cam()  local
35 	set_bit(hw_key_idx, sec->cam_map);  in rtw_sec_write_cam()
36 	cam->valid = true;  in rtw_sec_write_cam()
37 	cam->group = !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE);  in rtw_sec_write_cam()
38 	cam->hw_key_type = hw_key_type;  in rtw_sec_write_cam()
39 	cam->key = key;  in rtw_sec_write_cam()
40 	if (sta)  in rtw_sec_write_cam()
41 		ether_addr_copy(cam->addr, sta->addr);  in rtw_sec_write_cam()
43 		eth_broadcast_addr(cam->addr);  in rtw_sec_write_cam()
47 	for (i = 7; i >= 0; i--) {  in rtw_sec_write_cam()
50 			content = ((key->keyidx & 0x3))		|  in rtw_sec_write_cam()
52 				  (cam->group		<< 6)	|  in rtw_sec_write_cam()
53 				  (cam->valid		<< 15)	|  in rtw_sec_write_cam()
54 				  (cam->addr[0]		<< 16)	|  in rtw_sec_write_cam()
55 				  (cam->addr[1]		<< 24);  in rtw_sec_write_cam()
58 			content = (cam->addr[2])		|  in rtw_sec_write_cam()
59 				  (cam->addr[3]		<< 8)	|  in rtw_sec_write_cam()
60 				  (cam->addr[4]		<< 16)	|  in rtw_sec_write_cam()
61 				  (cam->addr[5]		<< 24);  in rtw_sec_write_cam()
68 			j = (i - 2) << 2;  in rtw_sec_write_cam()
69 			content = (key->key[j])			|  in rtw_sec_write_cam()
70 				  (key->key[j + 1]	<< 8)	|  in rtw_sec_write_cam()
71 				  (key->key[j + 2]	<< 16)	|  in rtw_sec_write_cam()
72 				  (key->key[j + 3]	<< 24);  in rtw_sec_write_cam()
86 	struct rtw_cam_entry *cam = &sec->cam_table[hw_key_idx];  in rtw_sec_clear_cam()  local
91 	clear_bit(hw_key_idx, sec->cam_map);  in rtw_sec_clear_cam()
92 	cam->valid = false;  in rtw_sec_clear_cam()
93 	cam->key = NULL;  in rtw_sec_clear_cam()
94 	eth_zero_addr(cam->addr);  in rtw_sec_clear_cam()
105 	struct rtw_sec_desc *sec = &rtwdev->sec;  in rtw_sec_cam_pg_backup()
109 	if (!used_cam)  in rtw_sec_cam_pg_backup()
113 		n = find_next_bit(sec->cam_map, RTW_MAX_SEC_CAM_NUM, offset);  in rtw_sec_cam_pg_backup()
114 		if (n == RTW_MAX_SEC_CAM_NUM)  in rtw_sec_cam_pg_backup()
126 	struct rtw_sec_desc *sec = &rtwdev->sec;  in rtw_sec_enable_sec_engine()
131 	sec->default_key_search = true;  in rtw_sec_enable_sec_engine()
140 	if (sec->default_key_search)  in rtw_sec_enable_sec_engine()