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path: root/drivers/net/npe/IxOsalIoMem.c
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diff --git a/drivers/net/npe/IxOsalIoMem.c b/drivers/net/npe/IxOsalIoMem.c
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+/**
+ * @file IxOsalIoMem.c
+ *
+ * @brief OS-independent IO/Mem implementation
+ *
+ *
+ * @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 --
+ */
+
+/* Access to the global mem map is only allowed in this file */
+#define IxOsalIoMem_C
+
+#include "IxOsal.h"
+
+#define SEARCH_PHYSICAL_ADDRESS (1)
+#define SEARCH_VIRTUAL_ADDRESS (2)
+
+/*
+ * Searches for map using one of the following criteria:
+ *
+ * - enough room to include a zone starting with the physical "requestedAddress" of size "size" (for mapping)
+ * - includes the virtual "requestedAddress" in its virtual address space (already mapped, for unmapping)
+ * - correct coherency
+ *
+ * Returns a pointer to the map or NULL if a suitable map is not found.
+ */
+PRIVATE IxOsalMemoryMap *
+ixOsalMemMapFind (UINT32 requestedAddress,
+ UINT32 size, UINT32 searchCriteria, UINT32 requestedEndianType)
+{
+ UINT32 mapIndex;
+
+ UINT32 numMapElements =
+ sizeof (ixOsalGlobalMemoryMap) / sizeof (IxOsalMemoryMap);
+
+ for (mapIndex = 0; mapIndex < numMapElements; mapIndex++)
+ {
+ IxOsalMemoryMap *map = &ixOsalGlobalMemoryMap[mapIndex];
+
+ if (searchCriteria == SEARCH_PHYSICAL_ADDRESS
+ && requestedAddress >= map->physicalAddress
+ && (requestedAddress + size) <= (map->physicalAddress + map->size)
+ && (map->mapEndianType & requestedEndianType) != 0)
+ {
+ return map;
+ }
+ else if (searchCriteria == SEARCH_VIRTUAL_ADDRESS
+ && requestedAddress >= map->virtualAddress
+ && requestedAddress <= (map->virtualAddress + map->size)
+ && (map->mapEndianType & requestedEndianType) != 0)
+ {
+ return map;
+ }
+ else if (searchCriteria == SEARCH_PHYSICAL_ADDRESS)
+ {
+ ixOsalLog (IX_OSAL_LOG_LVL_DEBUG3,
+ IX_OSAL_LOG_DEV_STDOUT,
+ "Osal: Checking [phys addr 0x%x:size 0x%x:endianType %d]\n",
+ map->physicalAddress, map->size, map->mapEndianType, 0, 0, 0);
+ }
+ }
+
+ /*
+ * not found
+ */
+ return NULL;
+}
+
+/*
+ * 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 ixOsalMemUnmap 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.
+ *
+ * Note: this function is not to be used directly. Use IX_OSAL_MEM_MAP
+ * instead.
+ */
+PUBLIC void *
+ixOsalIoMemMap (UINT32 requestedAddress,
+ UINT32 size, IxOsalMapEndianessType requestedEndianType)
+{
+ IxOsalMemoryMap *map;
+
+ ixOsalLog (IX_OSAL_LOG_LVL_DEBUG3,
+ IX_OSAL_LOG_DEV_STDOUT,
+ "OSAL: Mapping [addr 0x%x:size 0x%x:endianType %d]\n",
+ requestedAddress, size, requestedEndianType, 0, 0, 0);
+
+ if (requestedEndianType == IX_OSAL_LE)
+ {
+ ixOsalLog (IX_OSAL_LOG_LVL_ERROR,
+ IX_OSAL_LOG_DEV_STDOUT,
+ "ixOsalIoMemMap: Please specify component coherency mode to use MEM functions \n",
+ 0, 0, 0, 0, 0, 0);
+ return (NULL);
+ }
+ map = ixOsalMemMapFind (requestedAddress,
+ size, SEARCH_PHYSICAL_ADDRESS, requestedEndianType);
+ if (map != NULL)
+ {
+ UINT32 offset = requestedAddress - map->physicalAddress;
+
+ ixOsalLog (IX_OSAL_LOG_LVL_DEBUG3,
+ IX_OSAL_LOG_DEV_STDOUT, "OSAL: Found map [", 0, 0, 0, 0, 0, 0);
+ ixOsalLog (IX_OSAL_LOG_LVL_DEBUG3,
+ IX_OSAL_LOG_DEV_STDOUT, map->name, 0, 0, 0, 0, 0, 0);
+ ixOsalLog (IX_OSAL_LOG_LVL_DEBUG3,
+ IX_OSAL_LOG_DEV_STDOUT,
+ ":addr 0x%x: virt 0x%x:size 0x%x:ref %d:endianType %d]\n",
+ map->physicalAddress, map->virtualAddress,
+ map->size, map->refCount, map->mapEndianType, 0);
+
+ if (map->type == IX_OSAL_DYNAMIC_MAP && map->virtualAddress == 0)
+ {
+ if (map->mapFunction != NULL)
+ {
+ map->mapFunction (map);
+
+ if (map->virtualAddress == 0)
+ {
+ /*
+ * failed
+ */
+ ixOsalLog (IX_OSAL_LOG_LVL_FATAL,
+ IX_OSAL_LOG_DEV_STDERR,
+ "OSAL: Remap failed - [addr 0x%x:size 0x%x:endianType %d]\n",
+ requestedAddress, size, requestedEndianType, 0, 0, 0);
+ return NULL;
+ }
+ }
+ else
+ {
+ /*
+ * error, no map function for a dynamic map
+ */
+ ixOsalLog (IX_OSAL_LOG_LVL_FATAL,
+ IX_OSAL_LOG_DEV_STDERR,
+ "OSAL: No map function for a dynamic map - "
+ "[addr 0x%x:size 0x%x:endianType %d]\n",
+ requestedAddress, size, requestedEndianType, 0, 0, 0);
+
+ return NULL;
+ }
+ }
+
+ /*
+ * increment reference count
+ */
+ map->refCount++;
+
+ return (void *) (map->virtualAddress + offset);
+ }
+
+ /*
+ * requested address is not described in the global memory map
+ */
+ ixOsalLog (IX_OSAL_LOG_LVL_FATAL,
+ IX_OSAL_LOG_DEV_STDERR,
+ "OSAL: No mapping found - [addr 0x%x:size 0x%x:endianType %d]\n",
+ requestedAddress, size, requestedEndianType, 0, 0, 0);
+ return NULL;
+}
+
+/*
+ * 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.
+ *
+ * Note: this function is not to be used directly. Use IX_OSAL_MEM_UNMAP
+ * instead.
+ */
+PUBLIC void
+ixOsalIoMemUnmap (UINT32 requestedAddress, UINT32 endianType)
+{
+ IxOsalMemoryMap *map;
+
+ if (endianType == IX_OSAL_LE)
+ {
+ ixOsalLog (IX_OSAL_LOG_LVL_ERROR,
+ IX_OSAL_LOG_DEV_STDOUT,
+ "ixOsalIoMemUnmap: Please specify component coherency mode to use MEM functions \n",
+ 0, 0, 0, 0, 0, 0);
+ return;
+ }
+
+ if (requestedAddress == 0)
+ {
+ /*
+ * invalid virtual address
+ */
+ return;
+ }
+
+ map =
+ ixOsalMemMapFind (requestedAddress, 0, SEARCH_VIRTUAL_ADDRESS,
+ endianType);
+
+ if (map != NULL)
+ {
+ if (map->refCount > 0)
+ {
+ /*
+ * decrement reference count
+ */
+ map->refCount--;
+
+ if (map->refCount == 0)
+ {
+ /*
+ * no longer used, deallocate
+ */
+ if (map->type == IX_OSAL_DYNAMIC_MAP
+ && map->unmapFunction != NULL)
+ {
+ map->unmapFunction (map);
+ }
+ }
+ }
+ }
+ else
+ {
+ ixOsalLog (IX_OSAL_LOG_LVL_WARNING,
+ IX_OSAL_LOG_DEV_STDERR,
+ "OSAL: ixOsServMemUnmap didn't find the requested map "
+ "[virt addr 0x%x: endianType %d], ignoring call\n",
+ requestedAddress, endianType, 0, 0, 0, 0);
+ }
+}
+
+/*
+ * This function Converts a virtual address into a physical
+ * address, including the dynamically mapped memory.
+ *
+ * Parameters virtAddr - virtual address to convert
+ * Return value: corresponding physical address, or NULL
+ * if there is no physical address addressable
+ * by the given virtual address
+ * OS: VxWorks, Linux, WinCE, QNX, eCos
+ * Reentrant: Yes
+ * IRQ safe: Yes
+ */
+PUBLIC UINT32
+ixOsalIoMemVirtToPhys (UINT32 virtualAddress, UINT32 requestedCoherency)
+{
+ IxOsalMemoryMap *map =
+ ixOsalMemMapFind (virtualAddress, 0, SEARCH_VIRTUAL_ADDRESS,
+ requestedCoherency);
+
+ if (map != NULL)
+ {
+ return map->physicalAddress + virtualAddress - map->virtualAddress;
+ }
+ else
+ {
+ return (UINT32) IX_OSAL_MMU_VIRT_TO_PHYS (virtualAddress);
+ }
+}
+
+/*
+ * This function Converts a virtual address into a physical
+ * address, including the dynamically mapped memory.
+ *
+ * Parameters virtAddr - virtual address to convert
+ * Return value: corresponding physical address, or NULL
+ * if there is no physical address addressable
+ * by the given virtual address
+ * OS: VxWorks, Linux, WinCE, QNX, eCos
+ * Reentrant: Yes
+ * IRQ safe: Yes
+ */
+PUBLIC UINT32
+ixOsalIoMemPhysToVirt (UINT32 physicalAddress, UINT32 requestedCoherency)
+{
+ IxOsalMemoryMap *map =
+ ixOsalMemMapFind (physicalAddress, 0, SEARCH_PHYSICAL_ADDRESS,
+ requestedCoherency);
+
+ if (map != NULL)
+ {
+ return map->virtualAddress + physicalAddress - map->physicalAddress;
+ }
+ else
+ {
+ return (UINT32) IX_OSAL_MMU_PHYS_TO_VIRT (physicalAddress);
+ }
+}