u-boot/cpu/ixp/npe/include/IxOsalIoMem.h
2006-05-30 15:58:20 +02:00

322 lines
11 KiB
C

/*
* @file IxOsalIoMem.h
* @author Intel Corporation
* @date 25-08-2004
*
* @brief description goes here
*/
/**
* @par
* IXP400 SW Release version 2.0
*
* -- Copyright Notice --
*
* @par
* Copyright 2001-2005, Intel Corporation.
* All rights reserved.
*
* @par
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* @par
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @par
* -- End of Copyright Notice --
*/
#ifndef IxOsalIoMem_H
#define IxOsalIoMem_H
/*
* Decide OS and Endianess, such as IX_OSAL_VXWORKS_LE.
*/
#include "IxOsalEndianess.h"
/**
* @defgroup IxOsalIoMem Osal IoMem module
*
* @brief I/O memory and endianess support.
*
* @{
*/
/* Low-level conversion macros - DO NOT USE UNLESS ABSOLUTELY NEEDED */
#ifndef __wince
/*
* Private function to swap word
*/
#ifdef __XSCALE__
static __inline__ UINT32
ixOsalCoreWordSwap (UINT32 wordIn)
{
/*
* Storage for the swapped word
*/
UINT32 wordOut;
/*
* wordIn = A, B, C, D
*/
__asm__ (" eor r1, %1, %1, ror #16;" /* R1 = A^C, B^D, C^A, D^B */
" bic r1, r1, #0x00ff0000;" /* R1 = A^C, 0 , C^A, D^B */
" mov %0, %1, ror #8;" /* wordOut = D, A, B, C */
" eor %0, %0, r1, lsr #8;" /* wordOut = D, C, B, A */
: "=r" (wordOut): "r" (wordIn):"r1");
return wordOut;
}
#define IX_OSAL_SWAP_LONG(wData) (ixOsalCoreWordSwap(wData))
#else
#define IX_OSAL_SWAP_LONG(wData) ((wData >> 24) | (((wData >> 16) & 0xFF) << 8) | (((wData >> 8) & 0xFF) << 16) | ((wData & 0xFF) << 24))
#endif
#else /* ndef __wince */
#define IX_OSAL_SWAP_LONG(wData) ((((UINT32)wData << 24) | ((UINT32)wData >> 24)) | (((wData << 8) & 0xff0000) | ((wData >> 8) & 0xff00)))
#endif /* ndef __wince */
#define IX_OSAL_SWAP_SHORT(sData) ((sData >> 8) | ((sData & 0xFF) << 8))
#define IX_OSAL_SWAP_SHORT_ADDRESS(sAddr) ((sAddr) ^ 0x2)
#define IX_OSAL_SWAP_BYTE_ADDRESS(bAddr) ((bAddr) ^ 0x3)
#define IX_OSAL_BE_XSTOBUSL(wData) (wData)
#define IX_OSAL_BE_XSTOBUSS(sData) (sData)
#define IX_OSAL_BE_XSTOBUSB(bData) (bData)
#define IX_OSAL_BE_BUSTOXSL(wData) (wData)
#define IX_OSAL_BE_BUSTOXSS(sData) (sData)
#define IX_OSAL_BE_BUSTOXSB(bData) (bData)
#define IX_OSAL_LE_AC_XSTOBUSL(wAddr) (wAddr)
#define IX_OSAL_LE_AC_XSTOBUSS(sAddr) IX_OSAL_SWAP_SHORT_ADDRESS(sAddr)
#define IX_OSAL_LE_AC_XSTOBUSB(bAddr) IX_OSAL_SWAP_BYTE_ADDRESS(bAddr)
#define IX_OSAL_LE_AC_BUSTOXSL(wAddr) (wAddr)
#define IX_OSAL_LE_AC_BUSTOXSS(sAddr) IX_OSAL_SWAP_SHORT_ADDRESS(sAddr)
#define IX_OSAL_LE_AC_BUSTOXSB(bAddr) IX_OSAL_SWAP_BYTE_ADDRESS(bAddr)
#define IX_OSAL_LE_DC_XSTOBUSL(wData) IX_OSAL_SWAP_LONG(wData)
#define IX_OSAL_LE_DC_XSTOBUSS(sData) IX_OSAL_SWAP_SHORT(sData)
#define IX_OSAL_LE_DC_XSTOBUSB(bData) (bData)
#define IX_OSAL_LE_DC_BUSTOXSL(wData) IX_OSAL_SWAP_LONG(wData)
#define IX_OSAL_LE_DC_BUSTOXSS(sData) IX_OSAL_SWAP_SHORT(sData)
#define IX_OSAL_LE_DC_BUSTOXSB(bData) (bData)
/*
* Decide SDRAM mapping, then implement read/write
*/
#include "IxOsalMemAccess.h"
/**
* @ingroup IxOsalIoMem
* @enum IxOsalMapEntryType
* @brief This is an emum for OSAL I/O mem map type.
*/
typedef enum
{
IX_OSAL_STATIC_MAP = 0, /**<Set map entry type to static map */
IX_OSAL_DYNAMIC_MAP /**<Set map entry type to dynamic map */
} IxOsalMapEntryType;
/**
* @ingroup IxOsalIoMem
* @enum IxOsalMapEndianessType
* @brief This is an emum for OSAL I/O mem Endianess and Coherency mode.
*/
typedef enum
{
IX_OSAL_BE = 0x1, /**<Set map endian mode to Big Endian */
IX_OSAL_LE_AC = 0x2, /**<Set map endian mode to Little Endian, Address Coherent */
IX_OSAL_LE_DC = 0x4, /**<Set map endian mode to Little Endian, Data Coherent */
IX_OSAL_LE = 0x8 /**<Set map endian mode to Little Endian without specifying coherency mode */
} IxOsalMapEndianessType;
/**
* @struct IxOsalMemoryMap
* @brief IxOsalMemoryMap structure
*/
typedef struct _IxOsalMemoryMap
{
IxOsalMapEntryType type; /**< map type - IX_OSAL_STATIC_MAP or IX_OSAL_DYNAMIC_MAP */
UINT32 physicalAddress; /**< physical address of the memory mapped I/O zone */
UINT32 size; /**< size of the map */
UINT32 virtualAddress; /**< virtual address of the zone; must be predefined
in the global memory map for static maps and has
to be NULL for dynamic maps (populated on allocation)
*/
/*
* pointer to a map function called to map a dynamic map;
* will populate the virtualAddress field
*/
void (*mapFunction) (struct _IxOsalMemoryMap * map); /**< pointer to a map function called to map a dynamic map */
/*
* pointer to a map function called to unmap a dynamic map;
* will reset the virtualAddress field to NULL
*/
void (*unmapFunction) (struct _IxOsalMemoryMap * map); /**< pointer to a map function called to unmap a dynamic map */
/*
* reference count describing how many components share this map;
* actual allocation/deallocation for dynamic maps is done only
* between 0 <=> 1 transitions of the counter
*/
UINT32 refCount; /**< reference count describing how many components share this map */
/*
* memory endian type for the map; can be a combination of IX_OSAL_BE (Big
* Endian) and IX_OSAL_LE or IX_OSAL_LE_AC or IX_OSAL_LE_DC
* (Little Endian, Address Coherent or Data Coherent). Any combination is
* allowed provided it contains at most one LE flag - e.g.
* (IX_OSAL_BE), (IX_OSAL_LE_AC), (IX_OSAL_BE | IX_OSAL_LE_DC) are valid
* combinations while (IX_OSAL_BE | IX_OSAL_LE_DC | IX_OSAL_LE_AC) is not.
*/
IxOsalMapEndianessType mapEndianType; /**< memory endian type for the map */
char *name; /**< user-friendly name */
} IxOsalMemoryMap;
/* Internal function to map a memory zone
* NOTE - This should not be called by the user.
* Use the macro IX_OSAL_MEM_MAP instead
*/
PUBLIC void *ixOsalIoMemMap (UINT32 requestedAddress,
UINT32 size,
IxOsalMapEndianessType requestedCoherency);
/* Internal function to unmap a memory zone mapped with ixOsalIoMemMap
* NOTE - This should not be called by the user.
* Use the macro IX_OSAL_MEM_UNMAP instead
*/
PUBLIC void ixOsalIoMemUnmap (UINT32 requestedAddress, UINT32 coherency);
/* Internal function to convert virtual address to physical address
* NOTE - This should not be called by the user.
* Use the macro IX_OSAL_MMAP_VIRT_TO_PHYS */
PUBLIC UINT32 ixOsalIoMemVirtToPhys (UINT32 virtualAddress, UINT32 coherency);
/* Internal function to convert physical address to virtual address
* NOTE - This should not be called by the user.
* Use the macro IX_OSAL_MMAP_PHYS_TO_VIRT */
PUBLIC UINT32
ixOsalIoMemPhysToVirt (UINT32 physicalAddress, UINT32 coherency);
/**
* @ingroup IxOsalIoMem
*
* @def IX_OSAL_MEM_MAP(physAddr, size)
*
* @brief Map an I/O mapped physical memory zone to virtual zone and return virtual
* pointer.
* @param physAddr - the physical address
* @param size - the size
* @return start address of the virtual memory zone.
*
* @note This function maps an I/O mapped physical memory zone of the given size
* into a virtual memory zone accessible by the caller and returns a cookie -
* the start address of the virtual memory zone.
* IX_OSAL_MMAP_PHYS_TO_VIRT should NOT therefore be used on the returned
* virtual address.
* The memory zone is to be unmapped using IX_OSAL_MEM_UNMAP once the caller has
* finished using this zone (e.g. on driver unload) using the cookie as
* parameter.
* The IX_OSAL_READ/WRITE_LONG/SHORT macros should be used to read and write
* the mapped memory, adding the necessary offsets to the address cookie.
*/
#define IX_OSAL_MEM_MAP(physAddr, size) \
ixOsalIoMemMap((physAddr), (size), IX_OSAL_COMPONENT_MAPPING)
/**
* @ingroup IxOsalIoMem
*
* @def IX_OSAL_MEM_UNMAP(virtAddr)
*
* @brief Unmap a previously mapped I/O memory zone using virtual pointer obtained
* during the mapping operation.
* pointer.
* @param virtAddr - the virtual pointer to the zone to be unmapped.
* @return none
*
* @note This function unmaps a previously mapped I/O memory zone using
* the cookie obtained in the mapping operation. The memory zone in question
* becomes unavailable to the caller once unmapped and the cookie should be
* discarded.
*
* This function cannot fail if the given parameter is correct and does not
* return a value.
*/
#define IX_OSAL_MEM_UNMAP(virtAddr) \
ixOsalIoMemUnmap ((virtAddr), IX_OSAL_COMPONENT_MAPPING)
/**
* @ingroup IxOsalIoMem
*
* @def IX_OSAL_MMAP_VIRT_TO_PHYS(virtAddr)
*
* @brief This function Converts a virtual address into a physical
* address, including the dynamically mapped memory.
*
* @param virtAddr - virtual address to convert
* Return value: corresponding physical address, or NULL
*/
#define IX_OSAL_MMAP_VIRT_TO_PHYS(virtAddr) \
ixOsalIoMemVirtToPhys(virtAddr, IX_OSAL_COMPONENT_MAPPING)
/**
* @ingroup IxOsalIoMem
*
* @def IX_OSAL_MMAP_PHYS_TO_VIRT(physAddr)
*
* @brief This function Converts a virtual address into a physical
* address, including the dynamically mapped memory.
*
* @param physAddr - physical address to convert
* Return value: corresponding virtual address, or NULL
*
*/
#define IX_OSAL_MMAP_PHYS_TO_VIRT(physAddr) \
ixOsalIoMemPhysToVirt(physAddr, IX_OSAL_COMPONENT_MAPPING)
/**
* @} IxOsalIoMem
*/
#endif /* IxOsalIoMem_H */