/*
* 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
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);
}
}
/*
* 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 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;
#ifndef BOOTLOADER_BLD
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);
#endif
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;
#ifndef BOOTLOADER_BLD
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);
#endif
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;
}
