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Diffstat (limited to 'cpu/ixp/npe/include/IxOsalIoMem.h')
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diff --git a/cpu/ixp/npe/include/IxOsalIoMem.h b/cpu/ixp/npe/include/IxOsalIoMem.h new file mode 100644 index 0000000..ac0ce65 --- /dev/null +++ b/cpu/ixp/npe/include/IxOsalIoMem.h @@ -0,0 +1,322 @@ +/* + * @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 */ |