diff options
Diffstat (limited to 'carl9170fw/carlfw/src/cam.c')
| -rw-r--r-- | carl9170fw/carlfw/src/cam.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/carl9170fw/carlfw/src/cam.c b/carl9170fw/carlfw/src/cam.c deleted file mode 100644 index 7c0e61c..0000000 --- a/carl9170fw/carlfw/src/cam.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * carl9170 firmware - used by the ar9170 wireless device - * - * Security Engine - * - * Copyright (c) 2000-2005 ZyDAS Technology Corporation - * Copyright (c) 2007-2009 Atheros Communications, Inc. - * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> - * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.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 of the License, or - * (at your option) any later version. - * - * 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, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "carl9170.h" -#include "cam.h" - -#ifdef CONFIG_CARL9170FW_SECURITY_ENGINE -static void disable_cam_user(const uint16_t userId) -{ - if (userId <= 31) - andl(AR9170_MAC_REG_CAM_ROLL_CALL_TBL_L, (~((uint32_t) 1 << userId))); - else if (userId <= 63) - andl(AR9170_MAC_REG_CAM_ROLL_CALL_TBL_H, (~((uint32_t) 1 << (userId - 32)))); -} - -static void enable_cam_user(const uint16_t userId) -{ - if (userId <= 31) - orl(AR9170_MAC_REG_CAM_ROLL_CALL_TBL_L, (((uint32_t) 1) << userId)); - else if (userId <= 63) - orl(AR9170_MAC_REG_CAM_ROLL_CALL_TBL_H, (((uint32_t) 1) << (userId - 32))); -} - -static void wait_for_cam_read_ready(void) -{ - while ((get(AR9170_MAC_REG_CAM_STATE) & AR9170_MAC_CAM_STATE_READ_PENDING) == 0) { - /* - * wait - */ - } -} - -static void wait_for_cam_write_ready(void) -{ - while ((get(AR9170_MAC_REG_CAM_STATE) & AR9170_MAC_CAM_STATE_WRITE_PENDING) == 0) { - /* - * wait some more - */ - } -} - -static void HW_CAM_Avail(void) -{ - uint32_t tmpValue; - - do { - tmpValue = get(AR9170_MAC_REG_CAM_MODE); - } while (tmpValue & AR9170_MAC_CAM_HOST_PENDING); -} - -static void HW_CAM_Write128(const uint32_t address, const uint32_t *data) -{ - HW_CAM_Avail(); - - set(AR9170_MAC_REG_CAM_DATA0, data[0]); - set(AR9170_MAC_REG_CAM_DATA1, data[1]); - set(AR9170_MAC_REG_CAM_DATA2, data[2]); - set(AR9170_MAC_REG_CAM_DATA3, data[3]); - - set(AR9170_MAC_REG_CAM_ADDR, address | AR9170_MAC_CAM_ADDR_WRITE); - - wait_for_cam_write_ready(); -} - -static void HW_CAM_Read128(const uint32_t address, uint32_t *data) -{ - - HW_CAM_Avail(); - set(AR9170_MAC_REG_CAM_ADDR, address); - - wait_for_cam_read_ready(); - HW_CAM_Avail(); - data[0] = get(AR9170_MAC_REG_CAM_DATA0); - data[1] = get(AR9170_MAC_REG_CAM_DATA1); - data[2] = get(AR9170_MAC_REG_CAM_DATA2); - data[3] = get(AR9170_MAC_REG_CAM_DATA3); -} - -void set_key(const struct carl9170_set_key_cmd *key) -{ - uint32_t data[4]; - uint16_t row, wordId, nibbleId, i; - - if (key->user > (AR9170_CAM_MAX_USER + 3)) - return ; - - if (key->keyId > 1) - return ; - - /* Disable Key */ - disable_cam_user(key->user); - - /* Set encrypt type */ - if (key->user >= AR9170_CAM_MAX_USER) { - /* default */ - row = DEFAULT_ENCRY_TYPE; - wordId = 0; - nibbleId = (key->user - AR9170_CAM_MAX_USER) & 0x7; - } else { - row = ENCRY_TYPE_START_ADDR + (key->user >> 5); - wordId = (key->user >> 3) & 0x3; - nibbleId = key->user & 0x7; - } - - HW_CAM_Read128(row, data); - data[wordId] &= (~(0xf << ((uint32_t) nibbleId * 4))); - data[wordId] |= (key->type << ((uint32_t) nibbleId * 4)); - HW_CAM_Write128(row, data); - - /* Set MAC address */ - if (key->user < AR9170_CAM_MAX_USER) { - uint16_t byteId; - wordId = (key->user >> 2) & 0x3; - byteId = key->user & 0x3; - row = (key->user >> 4) * 6; - - for (i = 0; i < 6; i++) { - HW_CAM_Read128(row + i, data); - data[wordId] &= (~(0xff << ((uint32_t) byteId * 8))); - data[wordId] |= (key->macAddr[i] << ((uint32_t) byteId * 8)); - HW_CAM_Write128(row + i, data); - } - } - - /* Set key */ - row = KEY_START_ADDR + (key->user * 2) + key->keyId; - - HW_CAM_Write128(row, key->key); - - /* Enable Key */ - enable_cam_user(key->user); -} - -void disable_key(const struct carl9170_disable_key_cmd *key) -{ - disable_cam_user(key->user); -} - -#endif /* CONFIG_CARL9170FW_SECURITY_ENGINE */ |