Staging: add Realtek 8192 PCI wireless driver

This wireless driver should work for the Realtek 8192 PCI devices.

It comes directly from Realtek and has been tested to work on at least
one laptop in the wild.

Cc: Anthony Wong <awong1@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 239 insertions, 0 deletions

diff --git a/drivers/staging/rtl8192e/ieee80211/dot11d.c b/drivers/staging/rtl8192e/ieee80211/dot11d.c
new file mode 100644
index 0000000..908f605
--- /dev/null
+++ b/drivers/staging/rtl8192e/ieee80211/dot11d.c
@@ -0,0 +1,239 @@
+#ifdef ENABLE_DOT11D
+//-----------------------------------------------------------------------------
+//	File:
+//		Dot11d.c
+//
+//	Description:
+//		Implement 802.11d.
+//
+//-----------------------------------------------------------------------------
+
+#include "dot11d.h"
+
+void
+Dot11d_Init(struct ieee80211_device *ieee)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(ieee);
+
+	pDot11dInfo->bEnabled = 0;
+
+	pDot11dInfo->State = DOT11D_STATE_NONE;
+	pDot11dInfo->CountryIeLen = 0;
+	memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
+	memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
+	RESET_CIE_WATCHDOG(ieee);
+
+	printk("Dot11d_Init()\n");
+}
+
+//
+//	Description:
+//		Reset to the state as we are just entering a regulatory domain.
+//
+void
+Dot11d_Reset(struct ieee80211_device *ieee)
+{
+	u32 i;
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(ieee);
+#if 0
+	if(!pDot11dInfo->bEnabled)
+		return;
+#endif
+	// Clear old channel map
+	memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
+	memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
+	// Set new channel map
+	for (i=1; i<=11; i++) {
+		(pDot11dInfo->channel_map)[i] = 1;
+	}
+	for (i=12; i<=14; i++) {
+		(pDot11dInfo->channel_map)[i] = 2;
+	}
+
+	pDot11dInfo->State = DOT11D_STATE_NONE;
+	pDot11dInfo->CountryIeLen = 0;
+	RESET_CIE_WATCHDOG(ieee);
+
+	//printk("Dot11d_Reset()\n");
+}
+
+//
+//	Description:
+//		Update country IE from Beacon or Probe Resopnse
+//		and configure PHY for operation in the regulatory domain.
+//
+//	TODO:
+//		Configure Tx power.
+//
+//	Assumption:
+//		1. IS_DOT11D_ENABLE() is TRUE.
+//		2. Input IE is an valid one.
+//
+void
+Dot11d_UpdateCountryIe(
+	struct ieee80211_device *dev,
+	u8 *		pTaddr,
+	u16	CoutryIeLen,
+	u8 * pCoutryIe
+	)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+	u8 i, j, NumTriples, MaxChnlNum;
+	PCHNL_TXPOWER_TRIPLE pTriple;
+
+	memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
+	memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
+	MaxChnlNum = 0;
+	NumTriples = (CoutryIeLen - 3) / 3; // skip 3-byte country string.
+	pTriple = (PCHNL_TXPOWER_TRIPLE)(pCoutryIe + 3);
+	for(i = 0; i < NumTriples; i++)
+	{
+		if(MaxChnlNum >= pTriple->FirstChnl)
+		{ // It is not in a monotonically increasing order, so stop processing.
+			printk("Dot11d_UpdateCountryIe(): Invalid country IE, skip it........1\n");
+			return;
+		}
+		if(MAX_CHANNEL_NUMBER < (pTriple->FirstChnl + pTriple->NumChnls))
+		{ // It is not a valid set of channel id, so stop processing.
+			printk("Dot11d_UpdateCountryIe(): Invalid country IE, skip it........2\n");
+			return;
+		}
+
+		for(j = 0 ; j < pTriple->NumChnls; j++)
+		{
+			pDot11dInfo->channel_map[pTriple->FirstChnl + j] = 1;
+			pDot11dInfo->MaxTxPwrDbmList[pTriple->FirstChnl + j] = pTriple->MaxTxPowerInDbm;
+			MaxChnlNum = pTriple->FirstChnl + j;
+		}
+
+		pTriple = (PCHNL_TXPOWER_TRIPLE)((u8*)pTriple + 3);
+	}
+#if 1
+	//printk("Dot11d_UpdateCountryIe(): Channel List:\n");
+	printk("Channel List:");
+	for(i=1; i<= MAX_CHANNEL_NUMBER; i++)
+		if(pDot11dInfo->channel_map[i] > 0)
+			printk(" %d", i);
+	printk("\n");
+#endif
+
+	UPDATE_CIE_SRC(dev, pTaddr);
+
+	pDot11dInfo->CountryIeLen = CoutryIeLen;
+	memcpy(pDot11dInfo->CountryIeBuf, pCoutryIe,CoutryIeLen);
+	pDot11dInfo->State = DOT11D_STATE_LEARNED;
+}
+
+
+u8
+DOT11D_GetMaxTxPwrInDbm(
+	struct ieee80211_device *dev,
+	u8 Channel
+	)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+	u8 MaxTxPwrInDbm = 255;
+
+	if(MAX_CHANNEL_NUMBER < Channel)
+	{
+		printk("DOT11D_GetMaxTxPwrInDbm(): Invalid Channel\n");
+		return MaxTxPwrInDbm;
+	}
+	if(pDot11dInfo->channel_map[Channel])
+	{
+		MaxTxPwrInDbm = pDot11dInfo->MaxTxPwrDbmList[Channel];
+	}
+
+	return MaxTxPwrInDbm;
+}
+
+
+void
+DOT11D_ScanComplete(
+	struct ieee80211_device * dev
+	)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+
+	switch(pDot11dInfo->State)
+	{
+	case DOT11D_STATE_LEARNED:
+		pDot11dInfo->State = DOT11D_STATE_DONE;
+		break;
+
+	case DOT11D_STATE_DONE:
+		if( GET_CIE_WATCHDOG(dev) == 0 )
+		{ // Reset country IE if previous one is gone.
+			Dot11d_Reset(dev);
+		}
+		break;
+	case DOT11D_STATE_NONE:
+		break;
+	}
+}
+
+int IsLegalChannel(
+	struct ieee80211_device * dev,
+	u8 channel
+)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+
+	if(MAX_CHANNEL_NUMBER < channel)
+	{
+		printk("IsLegalChannel(): Invalid Channel\n");
+		return 0;
+	}
+	if(pDot11dInfo->channel_map[channel] > 0)
+		return 1;
+	return 0;
+}
+
+int ToLegalChannel(
+	struct ieee80211_device * dev,
+	u8 channel
+)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+	u8 default_chn = 0;
+	u32 i = 0;
+
+	for (i=1; i<= MAX_CHANNEL_NUMBER; i++)
+	{
+		if(pDot11dInfo->channel_map[i] > 0)
+		{
+			default_chn = i;
+			break;
+		}
+	}
+
+	if(MAX_CHANNEL_NUMBER < channel)
+	{
+		printk("IsLegalChannel(): Invalid Channel\n");
+		return default_chn;
+	}
+
+	if(pDot11dInfo->channel_map[channel] > 0)
+		return channel;
+
+	return default_chn;
+}
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+//EXPORT_SYMBOL(Dot11d_Init);
+//EXPORT_SYMBOL(Dot11d_Reset);
+//EXPORT_SYMBOL(Dot11d_UpdateCountryIe);
+//EXPORT_SYMBOL(DOT11D_GetMaxTxPwrInDbm);
+//EXPORT_SYMBOL(DOT11D_ScanComplete);
+//EXPORT_SYMBOL(IsLegalChannel);
+//EXPORT_SYMBOL(ToLegalChannel);
+#else
+EXPORT_SYMBOL_NOVERS(Dot11d_Init);
+EXPORT_SYMBOL_NOVERS(Dot11d_Reset);
+EXPORT_SYMBOL_NOVERS(Dot11d_UpdateCountryIe);
+EXPORT_SYMBOL_NOVERS(DOT11D_GetMaxTxPwrInDbm);
+EXPORT_SYMBOL_NOVERS(DOT11D_ScanComplete);
+EXPORT_SYMBOL_NOVERS(IsLegalChannel);
+EXPORT_SYMBOL_NOVERS(ToLegalChannel);
+#endif
+
+#endif