[PATCH 03/22] rtl8192ce: Add files to rtlwifi - Part 3: cam.{c,h}

[Larry Finger <Larry.Finger@lwfinger.net>]

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
---
 drivers/net/wireless/rtlwifi/cam.c |  291 ++++++++++++++++++++++++++++++++++++
 drivers/net/wireless/rtlwifi/cam.h |   53 +++++++
 2 files changed, 344 insertions(+), 0 deletions(-)
 create mode 100644 drivers/net/wireless/rtlwifi/cam.c
 create mode 100644 drivers/net/wireless/rtlwifi/cam.h

diff --git a/drivers/net/wireless/rtlwifi/cam.c b/drivers/net/wireless/rtlwifi/cam.c
new file mode 100644
index 0000000..52c9c13
--- /dev/null
+++ b/drivers/net/wireless/rtlwifi/cam.c
@@ -0,0 +1,291 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2009-2010  Realtek Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * 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, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * wlanfae <wlanfae@realtek.com>
+ * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
+ * Hsinchu 300, Taiwan.
+ *
+ *****************************************************************************/
+
+#include "wifi.h"
+#include "cam.h"
+
+void rtl_cam_reset_sec_info(struct ieee80211_hw *hw)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	rtlpriv->sec.use_defaultkey = false;
+	rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
+	rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
+	memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
+	memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
+	rtlpriv->sec.pairwise_key = NULL;
+}
+
+static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
+			   u8 *mac_addr, u8 *key_cont_128, u16 us_config)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	u32 target_command;
+	u32 target_content = 0;
+	u8 entry_i;
+
+	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+		 ("key_cont_128:\n %x:%x:%x:%x:%x:%x\n",
+		  key_cont_128[0], key_cont_128[1],
+		  key_cont_128[2], key_cont_128[3],
+		  key_cont_128[4], key_cont_128[5]));
+
+	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
+		target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
+		target_command = target_command | BIT(31) | BIT(16);
+
+		if (entry_i == 0) {
+			target_content = (u32) (*(mac_addr + 0)) << 16 |
+			    (u32) (*(mac_addr + 1)) << 24 | (u32) us_config;
+
+			rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
+					target_content);
+			rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
+					target_command);
+
+			RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+				 ("rtl_cam_program_entry(): "
+				  "WRITE %x: %x\n",
+				  rtlpriv->cfg->maps[WCAMI], target_content));
+			RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+				 ("The Key ID is %d\n", entry_no));
+			RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+				 ("rtl_cam_program_entry(): "
+				  "WRITE %x: %x\n",
+				  rtlpriv->cfg->maps[RWCAM], target_command));
+
+		} else if (entry_i == 1) {
+
+			target_content = (u32) (*(mac_addr + 5)) << 24 |
+			    (u32) (*(mac_addr + 4)) << 16 |
+			    (u32) (*(mac_addr + 3)) << 8 |
+			    (u32) (*(mac_addr + 2));
+
+			rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
+					target_content);
+			rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
+					target_command);
+
+			RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+				 ("rtl_cam_program_entry(): WRITE A4: %x\n",
+				  target_content));
+			RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+				 ("rtl_cam_program_entry(): WRITE A0: %x\n",
+				  target_command));
+
+		} else {
+
+			target_content =
+			    (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 3)) <<
+			    24 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 2))
+			    << 16 |
+			    (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 1)) << 8
+			    | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 0));
+
+			rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
+					target_content);
+			rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
+					target_command);
+			udelay(100);
+
+			RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+				 ("rtl_cam_program_entry(): WRITE A4: %x\n",
+				  target_content));
+			RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+				 ("rtl_cam_program_entry(): WRITE A0: %x\n",
+				  target_command));
+		}
+	}
+
+	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+		 ("after set key, usconfig:%x\n", us_config));
+}
+
+u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
+			 u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
+			 u32 ul_default_key, u8 *key_content)
+{
+	u32 us_config;
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+		 ("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, "
+		  "ulUseDK=%x MacAddr" MAC_FMT "\n",
+		  ul_entry_idx, ul_key_id, ul_enc_alg,
+		  ul_default_key, MAC_ARG(mac_addr)));
+
+	if (ul_key_id == TOTAL_CAM_ENTRY) {
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
+			 ("<=== ulKeyId exceed!\n"));
+		return 0;
+	}
+
+	if (ul_default_key == 1) {
+		us_config = CFG_VALID | ((u16) (ul_enc_alg) << 2);
+	} else {
+		us_config = CFG_VALID | ((ul_enc_alg) << 2) | ul_key_id;
+	}
+
+	rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
+			      (u8 *) key_content, us_config);
+
+	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("<===\n"));
+
+	return 1;
+
+}
+EXPORT_SYMBOL(rtl_cam_add_one_entry);
+
+int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
+			     u8 *mac_addr, u32 ul_key_id)
+{
+	u32 ul_command;
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
+
+	ul_command = ul_key_id * CAM_CONTENT_COUNT;
+	ul_command = ul_command | BIT(31) | BIT(16);
+
+	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
+	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
+
+	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+		 ("rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
+	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+		 ("rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command));
+
+	return 0;
+
+}
+EXPORT_SYMBOL(rtl_cam_delete_one_entry);
+
+void rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
+{
+	u32 ul_command;
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	ul_command = BIT(31) | BIT(30);
+	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
+}
+EXPORT_SYMBOL(rtl_cam_reset_all_entry);
+
+void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	u32 ul_command;
+	u32 ul_content;
+	u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
+
+	switch (rtlpriv->sec.pairwise_enc_algorithm) {
+	case WEP40_ENCRYPTION:
+		ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
+		break;
+	case WEP104_ENCRYPTION:
+		ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
+		break;
+	case TKIP_ENCRYPTION:
+		ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
+		break;
+	case AESCCMP_ENCRYPTION:
+		ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
+		break;
+	default:
+		ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
+	}
+
+	ul_content = (uc_index & 3) | ((u16) (ul_enc_algo) << 2);
+
+	ul_content |= BIT(15);
+	ul_command = CAM_CONTENT_COUNT * uc_index;
+	ul_command = ul_command | BIT(31) | BIT(16);
+
+	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
+	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
+
+	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+		 ("rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content));
+	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
+		 ("rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command));
+}
+EXPORT_SYMBOL(rtl_cam_mark_invalid);
+
+void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	u32 ul_command;
+	u32 ul_content;
+	u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
+	u8 entry_i;
+
+	switch (rtlpriv->sec.pairwise_enc_algorithm) {
+	case WEP40_ENCRYPTION:
+		ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
+		break;
+	case WEP104_ENCRYPTION:
+		ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
+		break;
+	case TKIP_ENCRYPTION:
+		ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
+		break;
+	case AESCCMP_ENCRYPTION:
+		ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
+		break;
+	default:
+		ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
+	}
+
+	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
+
+		if (entry_i == 0) {
+			ul_content =
+			    (uc_index & 0x03) | ((u16) (ul_encalgo) << 2);
+			ul_content |= BIT(15);
+
+		} else {
+			ul_content = 0;
+		}
+
+		ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
+		ul_command = ul_command | BIT(31) | BIT(16);
+
+		rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
+		rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
+
+		RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
+			 ("rtl_cam_empty_entry(): WRITE A4: %x\n",
+			  ul_content));
+		RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
+			 ("rtl_cam_empty_entry(): WRITE A0: %x\n",
+			  ul_command));
+	}
+
+}
+EXPORT_SYMBOL(rtl_cam_empty_entry);
diff --git a/drivers/net/wireless/rtlwifi/cam.h b/drivers/net/wireless/rtlwifi/cam.h
new file mode 100644
index 0000000..dd82f05
--- /dev/null
+++ b/drivers/net/wireless/rtlwifi/cam.h
@@ -0,0 +1,53 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2009-2010  Realtek Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * 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, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * wlanfae <wlanfae@realtek.com>
+ * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
+ * Hsinchu 300, Taiwan.
+ *
+ *****************************************************************************/
+
+#ifndef __RTL_CAM_H_
+#define __RTL_CAM_H_
+
+#define TOTAL_CAM_ENTRY					32
+#define CAM_CONTENT_COUNT				8
+
+#define CFG_DEFAULT_KEY					BIT(5)
+#define CFG_VALID					BIT(15)
+
+#define PAIRWISE_KEYIDX					0
+#define CAM_PAIRWISE_KEY_POSITION		4
+
+#define	CAM_CONFIG_USEDK				1
+#define	CAM_CONFIG_NO_USEDK				0
+
+extern void rtl_cam_reset_all_entry(struct ieee80211_hw *hw);
+extern u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
+			u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
+			u32 ul_default_key, u8 *key_content);
+int rtl_cam_delete_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
+			u32 ul_key_id);
+void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index);
+void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index);
+void rtl_cam_reset_sec_info(struct ieee80211_hw *hw);
+
+#endif
-- 
1.7.1