/** @file\r
Common I/O Library routines.\r
\r
- Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
- All rights reserved. This program and the accompanying materials\r
+ Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
+ This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
+ http://opensource.org/licenses/bsd-license.php.\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
- Module Name: IoLibIpf.c\r
-\r
**/\r
\r
-//\r
-// Include common header file for this module.\r
-//\r
+\r
#include "BaseIoLibIntrinsicInternal.h"\r
+#include <Library/PcdLib.h>\r
\r
#define MAP_PORT_BASE_TO_MEM(_Port) \\r
((((_Port) & 0xfffc) << 10) | ((_Port) & 0x0fff))\r
\r
/**\r
- Reads a 8-bit I/O port.\r
+ Translates I/O port address to memory address.\r
+\r
+ This function translates I/O port address to memory address by adding the 64MB\r
+ aligned I/O Port space to the I/O address.\r
+ If I/O Port space base is not 64MB aligned, then ASSERT (). \r
+\r
+ @param Port The I/O port to read.\r
+\r
+ @return The memory address.\r
+\r
+**/\r
+UINTN\r
+InternalGetMemoryMapAddress (\r
+ IN UINTN Port\r
+ )\r
+{\r
+ UINTN Address;\r
+ UINTN IoBlockBaseAddress;\r
+\r
+ Address = MAP_PORT_BASE_TO_MEM (Port);\r
+ IoBlockBaseAddress = PcdGet64(PcdIoBlockBaseAddressForIpf);\r
+\r
+ //\r
+ // Make sure that the I/O Port space base is 64MB aligned.\r
+ // \r
+ ASSERT ((IoBlockBaseAddress & 0x3ffffff) == 0);\r
+ Address += IoBlockBaseAddress;\r
+\r
+ return Address;\r
+}\r
+\r
+/**\r
+ Reads an 8-bit I/O port.\r
\r
Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.\r
This function must guarantee that all I/O read and write operations are\r
serialized.\r
\r
+ If 8-bit I/O port operations are not supported, then ASSERT().\r
+\r
@param Port The I/O port to read.\r
\r
@return The value read.\r
UINT8\r
EFIAPI\r
IoRead8 (\r
- IN UINT64 Port\r
+ IN UINTN Port\r
)\r
{\r
- UINT64 Address;\r
-\r
- //\r
- // Add the 64MB aligned IO Port space to the IO address\r
- //\r
- Address = MAP_PORT_BASE_TO_MEM (Port);\r
- Address += PcdGet64(PcdIoBlockBaseAddressForIpf);\r
-\r
- return MmioRead8 (Address);\r
+ return MmioRead8 (InternalGetMemoryMapAddress (Port));\r
}\r
\r
/**\r
This function must guarantee that all I/O read and write operations are\r
serialized.\r
\r
+ If 16-bit I/O port operations are not supported, then ASSERT().\r
+ If Port is not aligned on a 16-bit boundary, then ASSERT().\r
+\r
@param Port The I/O port to read.\r
\r
@return The value read.\r
UINT16\r
EFIAPI\r
IoRead16 (\r
- IN UINT64 Port\r
+ IN UINTN Port\r
)\r
{\r
- UINT64 Address;\r
-\r
- //\r
- // Add the 64MB aligned IO Port space to the IO address\r
- //\r
- Address = MAP_PORT_BASE_TO_MEM (Port);\r
- Address += PcdGet64(PcdIoBlockBaseAddressForIpf);\r
-\r
- return MmioRead16 (Address);\r
+ return MmioRead16 (InternalGetMemoryMapAddress (Port));\r
}\r
\r
/**\r
This function must guarantee that all I/O read and write operations are\r
serialized.\r
\r
+ If 32-bit I/O port operations are not supported, then ASSERT().\r
+ If Port is not aligned on a 32-bit boundary, then ASSERT().\r
+ \r
@param Port The I/O port to read.\r
\r
@return The value read.\r
UINT32\r
EFIAPI\r
IoRead32 (\r
- IN UINT64 Port\r
+ IN UINTN Port\r
)\r
{\r
- UINT64 Address;\r
-\r
- //\r
- // Add the 64MB aligned IO Port space to the IO address\r
- //\r
- Address = MAP_PORT_BASE_TO_MEM (Port);\r
- Address += PcdGet64(PcdIoBlockBaseAddressForIpf);\r
-\r
- return MmioRead32 (Address);\r
+ return MmioRead32 (InternalGetMemoryMapAddress (Port));\r
}\r
\r
/**\r
serialized.\r
\r
If 64-bit I/O port operations are not supported, then ASSERT().\r
+ If Port is not aligned on a 64-bit boundary, then ASSERT().\r
\r
@param Port The I/O port to read.\r
\r
}\r
\r
/**\r
- Writes a 8-bit I/O port.\r
+ Writes an 8-bit I/O port.\r
\r
Writes the 8-bit I/O port specified by Port with the value specified by Value\r
and returns Value. This function must guarantee that all I/O read and write\r
operations are serialized.\r
\r
+ If 8-bit I/O port operations are not supported, then ASSERT().\r
+\r
@param Port The I/O port to write.\r
@param Value The value to write to the I/O port.\r
\r
UINT8\r
EFIAPI\r
IoWrite8 (\r
- IN UINT64 Port,\r
- IN UINT8 Data\r
+ IN UINTN Port,\r
+ IN UINT8 Value\r
)\r
{\r
- UINT64 Address;\r
-\r
- //\r
- // Add the 64MB aligned IO Port space to the IO address\r
- //\r
- Address = MAP_PORT_BASE_TO_MEM (Port);\r
- Address += PcdGet64(PcdIoBlockBaseAddressForIpf);\r
-\r
- return MmioWrite8 (Address, Data);\r
+ return MmioWrite8 (InternalGetMemoryMapAddress (Port), Value);\r
}\r
\r
/**\r
and returns Value. This function must guarantee that all I/O read and write\r
operations are serialized.\r
\r
+ If 16-bit I/O port operations are not supported, then ASSERT().\r
+ If Port is not aligned on a 16-bit boundary, then ASSERT().\r
+ \r
@param Port The I/O port to write.\r
@param Value The value to write to the I/O port.\r
\r
UINT16\r
EFIAPI\r
IoWrite16 (\r
- IN UINT64 Port,\r
- IN UINT16 Data\r
+ IN UINTN Port,\r
+ IN UINT16 Value\r
)\r
{\r
- UINT64 Address;\r
-\r
- //\r
- // Add the 64MB aligned IO Port space to the IO address\r
- //\r
- Address = MAP_PORT_BASE_TO_MEM (Port);\r
- Address += PcdGet64(PcdIoBlockBaseAddressForIpf);\r
-\r
- return MmioWrite16 (Address, Data);\r
+ return MmioWrite16 (InternalGetMemoryMapAddress (Port), Value);\r
}\r
\r
/**\r
and returns Value. This function must guarantee that all I/O read and write\r
operations are serialized.\r
\r
+ If 32-bit I/O port operations are not supported, then ASSERT().\r
+ If Port is not aligned on a 32-bit boundary, then ASSERT().\r
+ \r
@param Port The I/O port to write.\r
@param Value The value to write to the I/O port.\r
\r
UINT32\r
EFIAPI\r
IoWrite32 (\r
- IN UINT64 Port,\r
- IN UINT32 Data\r
+ IN UINTN Port,\r
+ IN UINT32 Value\r
)\r
{\r
- UINT64 Address;\r
-\r
- //\r
- // Add the 64MB aligned IO Port space to the IO address\r
- //\r
- Address = MAP_PORT_BASE_TO_MEM (Port);\r
- Address += PcdGet64(PcdIoBlockBaseAddressForIpf);\r
-\r
- return MmioWrite32 (Address, Data);\r
+ return MmioWrite32 (InternalGetMemoryMapAddress (Port), Value);\r
}\r
\r
/**\r
operations are serialized.\r
\r
If 64-bit I/O port operations are not supported, then ASSERT().\r
+ If Port is not aligned on a 64-bit boundary, then ASSERT().\r
\r
@param Port The I/O port to write.\r
@param Value The value to write to the I/O port.\r
}\r
\r
/**\r
- Reads a 8-bit MMIO register.\r
+ Reads an 8-bit MMIO register.\r
\r
Reads the 8-bit MMIO register specified by Address. The 8-bit read value is\r
returned. This function must guarantee that all MMIO read and write\r
operations are serialized.\r
\r
+ If 8-bit MMIO register operations are not supported, then ASSERT().\r
+\r
@param Address The MMIO register to read.\r
\r
@return The value read.\r
UINT8\r
EFIAPI\r
MmioRead8 (\r
- IN UINT64 Address\r
+ IN UINTN Address\r
)\r
{\r
UINT8 Data;\r
returned. This function must guarantee that all MMIO read and write\r
operations are serialized.\r
\r
+ If 16-bit MMIO register operations are not supported, then ASSERT().\r
+ If Address is not aligned on a 16-bit boundary, then ASSERT().\r
+\r
@param Address The MMIO register to read.\r
\r
@return The value read.\r
UINT16\r
EFIAPI\r
MmioRead16 (\r
- IN UINT64 Address\r
+ IN UINTN Address\r
)\r
{\r
UINT16 Data;\r
\r
+ //\r
+ // Make sure that Address is 16-bit aligned.\r
+ // \r
+ ASSERT ((Address & 1) == 0);\r
+\r
Address |= BIT63;\r
\r
MemoryFence ();\r
returned. This function must guarantee that all MMIO read and write\r
operations are serialized.\r
\r
+ If 32-bit MMIO register operations are not supported, then ASSERT().\r
+ If Address is not aligned on a 32-bit boundary, then ASSERT().\r
+\r
@param Address The MMIO register to read.\r
\r
@return The value read.\r
UINT32\r
EFIAPI\r
MmioRead32 (\r
- IN UINT64 Address\r
+ IN UINTN Address\r
)\r
{\r
UINT32 Data;\r
\r
+ //\r
+ // Make sure that Address is 32-bit aligned.\r
+ // \r
+ ASSERT ((Address & 3) == 0);\r
+\r
Address |= BIT63;\r
\r
MemoryFence ();\r
returned. This function must guarantee that all MMIO read and write\r
operations are serialized.\r
\r
+ If 64-bit MMIO register operations are not supported, then ASSERT().\r
+ If Address is not aligned on a 64-bit boundary, then ASSERT().\r
+\r
@param Address The MMIO register to read.\r
\r
@return The value read.\r
UINT64\r
EFIAPI\r
MmioRead64 (\r
- IN UINT64 Address\r
+ IN UINTN Address\r
)\r
{\r
UINT64 Data;\r
\r
+ //\r
+ // Make sure that Address is 64-bit aligned.\r
+ // \r
+ ASSERT ((Address & 7) == 0);\r
+\r
Address |= BIT63;\r
\r
MemoryFence ();\r
}\r
\r
/**\r
- Writes a 8-bit MMIO register.\r
+ Writes an 8-bit MMIO register.\r
\r
Writes the 8-bit MMIO register specified by Address with the value specified\r
by Value and returns Value. This function must guarantee that all MMIO read\r
and write operations are serialized.\r
\r
- @param Address The MMIO register to write.\r
- @param Data The value to write to the MMIO register.\r
+ If 8-bit MMIO register operations are not supported, then ASSERT().\r
\r
- @return The value written the memory address.\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+ \r
+ @return Value.\r
\r
**/\r
UINT8\r
EFIAPI\r
MmioWrite8 (\r
- IN UINT64 Address,\r
- IN UINT8 Data\r
+ IN UINTN Address,\r
+ IN UINT8 Value\r
)\r
{\r
Address |= BIT63;\r
\r
MemoryFence ();\r
- *((volatile UINT8 *) Address) = Data;\r
+ *((volatile UINT8 *) Address) = Value;\r
MemoryFence ();\r
\r
- return Data;\r
+ return Value;\r
}\r
\r
/**\r
by Value and returns Value. This function must guarantee that all MMIO read\r
and write operations are serialized.\r
\r
- @param Address The MMIO register to write.\r
- @param Data The value to write to the MMIO register.\r
+ If 16-bit MMIO register operations are not supported, then ASSERT().\r
+ If Address is not aligned on a 16-bit boundary, then ASSERT().\r
\r
- @return The value written the memory address.\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+ \r
+ @return Value.\r
\r
**/\r
UINT16\r
EFIAPI\r
MmioWrite16 (\r
- IN UINT64 Address,\r
- IN UINT16 Data\r
+ IN UINTN Address,\r
+ IN UINT16 Value\r
)\r
{\r
+ //\r
+ // Make sure that Address is 16-bit aligned.\r
+ // \r
+ ASSERT ((Address & 1) == 0);\r
+\r
Address |= BIT63;\r
\r
MemoryFence ();\r
- *((volatile UINT16 *) Address) = Data;\r
+ *((volatile UINT16 *) Address) = Value;\r
MemoryFence ();\r
\r
- return Data;\r
+ return Value;\r
}\r
\r
/**\r
by Value and returns Value. This function must guarantee that all MMIO read\r
and write operations are serialized.\r
\r
- @param Address The MMIO register to write.\r
- @param Data The value to write to the MMIO register.\r
+ If 32-bit MMIO register operations are not supported, then ASSERT().\r
+ If Address is not aligned on a 32-bit boundary, then ASSERT().\r
\r
- @return The value written the memory address.\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+ \r
+ @return Value.\r
\r
**/\r
UINT32\r
EFIAPI\r
MmioWrite32 (\r
- IN UINT64 Address,\r
- IN UINT32 Data\r
+ IN UINTN Address,\r
+ IN UINT32 Value\r
)\r
{\r
+ //\r
+ // Make sure that Address is 32-bit aligned.\r
+ // \r
+ ASSERT ((Address & 3) == 0);\r
+\r
Address |= BIT63;\r
\r
MemoryFence ();\r
- *((volatile UINT32 *) Address) = Data;\r
+ *((volatile UINT32 *) Address) = Value;\r
MemoryFence ();\r
\r
- return Data;\r
+ return Value;\r
}\r
\r
/**\r
by Value and returns Value. This function must guarantee that all MMIO read\r
and write operations are serialized.\r
\r
- @param Address The MMIO register to write.\r
- @param Data The value to write to the MMIO register.\r
+ If 64-bit MMIO register operations are not supported, then ASSERT().\r
+ If Address is not aligned on a 64-bit boundary, then ASSERT().\r
\r
- @return The value written the memory address.\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
\r
**/\r
UINT64\r
EFIAPI\r
MmioWrite64 (\r
- IN UINT64 Address,\r
- IN UINT64 Data\r
+ IN UINTN Address,\r
+ IN UINT64 Value\r
)\r
{\r
+ //\r
+ // Make sure that Address is 64-bit aligned.\r
+ // \r
+ ASSERT ((Address & 7) == 0);\r
+\r
Address |= BIT63;\r
\r
MemoryFence ();\r
- *((volatile UINT64 *) Address) = Data;\r
+ *((volatile UINT64 *) Address) = Value;\r
MemoryFence ();\r
\r
- return Data;\r
+ return Value;\r
}\r
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