Staging: add CSR wifi module

This consists of two modules, the driver, and a "helper" module that is
just a wrapper around common kernel functions.  The wrapper module will
be removed soon, but for now it's needed.

These files were based on the csr-linux-wifi-5.0.3-oss.tar.gz package
provided by CSR and Blue Giga, and is covered under the license
specified in the LICENSE.txt file (basically dual BSD and GPLv2).  The
files were flattened out of the deep directory mess they were originally
in, and a few EXPORT_SYMBOL_GPL() were added in order for everything to
link properly with the helper module setup.

Cc: Mikko Virkkilä <mikko.virkkila@bluegiga.com>
Cc: Lauri Hintsala <Lauri.Hintsala@bluegiga.com>
Cc: Riku Mettälä <riku.mettala@bluegiga.com>
Cc: Veli-Pekka Peltola <veli-pekka.peltola@bluegiga.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 435 insertions, 0 deletions

diff --git a/drivers/staging/csr/csr_util.c b/drivers/staging/csr/csr_util.c
new file mode 100644
index 000000000000..0ae11531e26d
--- /dev/null
+++ b/drivers/staging/csr/csr_util.c
@@ -0,0 +1,435 @@
+/*****************************************************************************
+
+            (c) Cambridge Silicon Radio Limited 2010
+            All rights reserved and confidential information of CSR
+
+            Refer to LICENSE.txt included with this source for details
+            on the license terms.
+
+*****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <stdarg.h>
+
+#include "csr_types.h"
+#include "csr_pmem.h"
+#include "csr_util.h"
+
+/*------------------------------------------------------------------*/
+/* Bits */
+/*------------------------------------------------------------------*/
+
+/* Time proportional with the number of 1's */
+CsrUint8 CsrBitCountSparse(CsrUint32 n)
+{
+    CsrUint8 count = 0;
+
+    while (n)
+    {
+        count++;
+        n &= (n - 1);
+    }
+
+    return count;
+}
+
+/* Time proportional with the number of 0's */
+CsrUint8 CsrBitCountDense(CsrUint32 n)
+{
+    CsrUint8 count = 8 * sizeof(CsrUint32);
+
+    n ^= (CsrUint32) (-1);
+
+    while (n)
+    {
+        count--;
+        n &= (n - 1);
+    }
+
+    return count;
+}
+
+/*------------------------------------------------------------------*/
+/* Base conversion */
+/*------------------------------------------------------------------*/
+CsrBool CsrHexStrToUint8(const CsrCharString *string, CsrUint8 *returnValue)
+{
+    CsrUint16 currentIndex = 0;
+    *returnValue = 0;
+    if ((string[currentIndex] == '0') && (CSR_TOUPPER(string[currentIndex + 1]) == 'X'))
+    {
+        string += 2;
+    }
+    if (((string[currentIndex] >= '0') && (string[currentIndex] <= '9')) || ((CSR_TOUPPER(string[currentIndex]) >= 'A') && (CSR_TOUPPER(string[currentIndex]) <= 'F')))
+    {
+        while (((string[currentIndex] >= '0') && (string[currentIndex] <= '9')) || ((CSR_TOUPPER(string[currentIndex]) >= 'A') && (CSR_TOUPPER(string[currentIndex]) <= 'F')))
+        {
+            *returnValue = (CsrUint8) (*returnValue * 16 + (((string[currentIndex] >= '0') && (string[currentIndex] <= '9')) ? string[currentIndex] - '0' : CSR_TOUPPER(string[currentIndex]) - 'A' + 10));
+            currentIndex++;
+            if (currentIndex >= 2)
+            {
+                break;
+            }
+        }
+        return TRUE;
+    }
+    return FALSE;
+}
+
+CsrBool CsrHexStrToUint16(const CsrCharString *string, CsrUint16 *returnValue)
+{
+    CsrUint16 currentIndex = 0;
+    *returnValue = 0;
+    if ((string[currentIndex] == '0') && (CSR_TOUPPER(string[currentIndex + 1]) == 'X'))
+    {
+        string += 2;
+    }
+    if (((string[currentIndex] >= '0') && (string[currentIndex] <= '9')) || ((CSR_TOUPPER(string[currentIndex]) >= 'A') && (CSR_TOUPPER(string[currentIndex]) <= 'F')))
+    {
+        while (((string[currentIndex] >= '0') && (string[currentIndex] <= '9')) || ((CSR_TOUPPER(string[currentIndex]) >= 'A') && (CSR_TOUPPER(string[currentIndex]) <= 'F')))
+        {
+            *returnValue = (CsrUint16) (*returnValue * 16 + (((string[currentIndex] >= '0') && (string[currentIndex] <= '9')) ? string[currentIndex] - '0' : CSR_TOUPPER(string[currentIndex]) - 'A' + 10));
+            currentIndex++;
+            if (currentIndex >= 4)
+            {
+                break;
+            }
+        }
+        return TRUE;
+    }
+    return FALSE;
+}
+
+CsrBool CsrHexStrToUint32(const CsrCharString *string, CsrUint32 *returnValue)
+{
+    CsrUint16 currentIndex = 0;
+    *returnValue = 0;
+    if ((string[currentIndex] == '0') && (CSR_TOUPPER(string[currentIndex + 1]) == 'X'))
+    {
+        string += 2;
+    }
+    if (((string[currentIndex] >= '0') && (string[currentIndex] <= '9')) || ((CSR_TOUPPER(string[currentIndex]) >= 'A') && (CSR_TOUPPER(string[currentIndex]) <= 'F')))
+    {
+        while (((string[currentIndex] >= '0') && (string[currentIndex] <= '9')) || ((CSR_TOUPPER(string[currentIndex]) >= 'A') && (CSR_TOUPPER(string[currentIndex]) <= 'F')))
+        {
+            *returnValue = *returnValue * 16 + (((string[currentIndex] >= '0') && (string[currentIndex] <= '9')) ? string[currentIndex] - '0' : CSR_TOUPPER(string[currentIndex]) - 'A' + 10);
+            currentIndex++;
+            if (currentIndex >= 8)
+            {
+                break;
+            }
+        }
+        return TRUE;
+    }
+    return FALSE;
+}
+
+CsrUint32 CsrPow(CsrUint32 base, CsrUint32 exponent)
+{
+    if (exponent == 0)
+    {
+        return 1;
+    }
+    else
+    {
+        CsrUint32 i, t = base;
+
+        for (i = 1; i < exponent; i++)
+        {
+            t = t * base;
+        }
+        return t;
+    }
+}
+
+/* Convert signed 32 bit (or less) integer to string */
+#define I2B10_MAX 12
+void CsrIntToBase10(CsrInt32 number, CsrCharString *str)
+{
+    CsrInt32 digit;
+    CsrUint8 index;
+    CsrCharString res[I2B10_MAX];
+    CsrBool foundDigit = FALSE;
+
+    for (digit = 0; digit < I2B10_MAX; digit++)
+    {
+        res[digit] = '\0';
+    }
+
+    /* Catch sign - and deal with positive numbers only afterwards */
+    index = 0;
+    if (number < 0)
+    {
+        res[index++] = '-';
+        number = -1 * number;
+    }
+
+    digit = 1000000000;
+    if (number > 0)
+    {
+        while ((index < I2B10_MAX - 1) && (digit > 0))
+        {
+            /* If the foundDigit flag is TRUE, this routine should be proceeded.
+            Otherwise the number which has '0' digit cannot be converted correctly */
+            if (((number / digit) > 0) || foundDigit)
+            {
+                foundDigit = TRUE; /* set foundDigit flag to TRUE*/
+                res[index++] = (char) ('0' + (number / digit));
+                number = number % digit;
+            }
+
+            digit = digit / 10;
+        }
+    }
+    else
+    {
+        res[index] = (char) '0';
+    }
+
+    CsrStrCpy(str, res);
+}
+
+void CsrUInt16ToHex(CsrUint16 number, CsrCharString *str)
+{
+    CsrUint16 index;
+    CsrUint16 currentValue;
+
+    for (index = 0; index < 4; index++)
+    {
+        currentValue = (CsrUint16) (number & 0x000F);
+        number >>= 4;
+        str[3 - index] = (char) (currentValue > 9 ? currentValue + 55 : currentValue + '0');
+    }
+    str[4] = '\0';
+}
+
+void CsrUInt32ToHex(CsrUint32 number, CsrCharString *str)
+{
+    CsrUint16 index;
+    CsrUint32 currentValue;
+
+    for (index = 0; index < 8; index++)
+    {
+        currentValue = (CsrUint32) (number & 0x0000000F);
+        number >>= 4;
+        str[7 - index] = (char) (currentValue > 9 ? currentValue + 55 : currentValue + '0');
+    }
+    str[8] = '\0';
+}
+
+/*------------------------------------------------------------------*/
+/*  String */
+/*------------------------------------------------------------------*/
+void *CsrMemCpy(void *dest, const void *src, CsrSize count)
+{
+    return memcpy(dest, src, count);
+}
+EXPORT_SYMBOL_GPL(CsrMemCpy);
+
+void *CsrMemSet(void *dest, CsrUint8 c, CsrSize count)
+{
+    return memset(dest, c, count);
+}
+EXPORT_SYMBOL_GPL(CsrMemSet);
+
+void *CsrMemMove(void *dest, const void *src, CsrSize count)
+{
+    return memmove(dest, src, count);
+}
+EXPORT_SYMBOL_GPL(CsrMemMove);
+
+CsrInt32 CsrMemCmp(const void *buf1, const void *buf2, CsrSize count)
+{
+    return memcmp(buf1, buf2, count);
+}
+EXPORT_SYMBOL_GPL(CsrMemCmp);
+
+void *CsrMemDup(const void *buf1, CsrSize count)
+{
+    void *buf2 = NULL;
+
+    if (buf1)
+    {
+        buf2 = CsrPmemAlloc(count);
+        CsrMemCpy(buf2, buf1, count);
+    }
+
+    return buf2;
+}
+
+CsrCharString *CsrStrCpy(CsrCharString *dest, const CsrCharString *src)
+{
+    return strcpy(dest, src);
+}
+
+CsrCharString *CsrStrNCpy(CsrCharString *dest, const CsrCharString *src, CsrSize count)
+{
+    return strncpy(dest, src, count);
+}
+
+CsrCharString *CsrStrCat(CsrCharString *dest, const CsrCharString *src)
+{
+    return strcat(dest, src);
+}
+
+CsrCharString *CsrStrNCat(CsrCharString *dest, const CsrCharString *src, CsrSize count)
+{
+    return strncat(dest, src, count);
+}
+
+CsrCharString *CsrStrStr(const CsrCharString *string1, const CsrCharString *string2)
+{
+    return strstr(string1, string2);
+}
+
+CsrSize CsrStrLen(const CsrCharString *string)
+{
+    return strlen(string);
+}
+EXPORT_SYMBOL_GPL(CsrStrLen);
+
+CsrInt32 CsrStrCmp(const CsrCharString *string1, const CsrCharString *string2)
+{
+    return strcmp(string1, string2);
+}
+
+CsrInt32 CsrStrNCmp(const CsrCharString *string1, const CsrCharString *string2, CsrSize count)
+{
+    return strncmp(string1, string2, count);
+}
+
+CsrCharString *CsrStrChr(const CsrCharString *string, CsrCharString c)
+{
+    return strchr(string, c);
+}
+
+CsrInt32 CsrVsnprintf(CsrCharString *string, CsrSize count, const CsrCharString *format, va_list args)
+{
+    return vsnprintf(string, count, format, args);
+}
+EXPORT_SYMBOL_GPL(CsrVsnprintf);
+
+CsrCharString *CsrStrNCpyZero(CsrCharString *dest,
+    const CsrCharString *src,
+    CsrSize count)
+{
+    CsrStrNCpy(dest, src, count - 1);
+    dest[count - 1] = '\0';
+    return dest;
+}
+
+/* Convert string with base 10 to integer */
+CsrUint32 CsrStrToInt(const CsrCharString *str)
+{
+    CsrInt16 i;
+    CsrUint32 res;
+    CsrUint32 digit;
+
+    res = 0;
+    digit = 1;
+
+    /* Start from the string end */
+    for (i = (CsrUint16) (CsrStrLen(str) - 1); i >= 0; i--)
+    {
+        /* Only convert numbers */
+        if ((str[i] >= '0') && (str[i] <= '9'))
+        {
+            res += digit * (str[i] - '0');
+            digit = digit * 10;
+        }
+    }
+
+    return res;
+}
+
+CsrCharString *CsrStrDup(const CsrCharString *string)
+{
+    CsrCharString *copy;
+    CsrUint32 len;
+
+    copy = NULL;
+    if (string != NULL)
+    {
+        len = CsrStrLen(string) + 1;
+        copy = CsrPmemAlloc(len);
+        CsrMemCpy(copy, string, len);
+    }
+    return copy;
+}
+
+int CsrStrNICmp(const CsrCharString *string1,
+    const CsrCharString *string2,
+    CsrSize count)
+{
+    CsrUint32 index;
+    int returnValue = 0;
+
+    for (index = 0; index < count; index++)
+    {
+        if (CSR_TOUPPER(string1[index]) != CSR_TOUPPER(string2[index]))
+        {
+            if (CSR_TOUPPER(string1[index]) > CSR_TOUPPER(string2[index]))
+            {
+                returnValue = 1;
+            }
+            else
+            {
+                returnValue = -1;
+            }
+            break;
+        }
+        if (string1[index] == '\0')
+        {
+            break;
+        }
+    }
+    return returnValue;
+}
+
+const CsrCharString *CsrGetBaseName(const CsrCharString *file)
+{
+    const CsrCharString *pch;
+    static const CsrCharString dotDir[] = ".";
+
+    if (!file)
+    {
+        return NULL;
+    }
+
+    if (file[0] == '\0')
+    {
+        return dotDir;
+    }
+
+    pch = file + CsrStrLen(file) - 1;
+
+    while (*pch != '\\' && *pch != '/' && *pch != ':')
+    {
+        if (pch == file)
+        {
+            return pch;
+        }
+        --pch;
+    }
+
+    return ++pch;
+}
+
+/*------------------------------------------------------------------*/
+/* Misc */
+/*------------------------------------------------------------------*/
+CsrBool CsrIsSpace(CsrUint8 c)
+{
+    switch (c)
+    {
+        case '\t':
+        case '\n':
+        case '\f':
+        case '\r':
+        case ' ':
+            return TRUE;
+        default:
+            return FALSE;
+    }
+}