/** Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit value. Reads the 8-bit PCI configuration register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 8-bit PCI configuration register specified by Address. The value written to the PCI configuration register is returned. This function must guarantee that all PCI read and write operations are serialized. If any reserved bits in Address are set, then ASSERT(). @param Address Address that encodes the PCI Segment, Bus, Device, Function and Register. @param AndData The value to AND with the PCI configuration register. @return The value written back to the PCI configuration register. **/ UINT8 EFIAPI PciSegmentAnd8 ( IN UINT64 Address, IN UINT8 AndData ) { return PciSegmentWrite8 (Address, (UINT8) (PciSegmentRead8 (Address) & AndData)); }
/** Performs a bitwise OR of an 8-bit PCI configuration register with an 8-bit value. Reads the 8-bit PCI configuration register specified by Address, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 8-bit PCI configuration register specified by Address. The value written to the PCI configuration register is returned. This function must guarantee that all PCI read and write operations are serialized. If any reserved bits in Address are set, then ASSERT(). @param Address Address that encodes the PCI Segment, Bus, Device, Function and Register. @param OrData The value to OR with the PCI configuration register. @return The value written back to the PCI configuration register. **/ UINT8 EFIAPI PciSegmentOr8 ( IN UINT64 Address, IN UINT8 OrData ) { return PciSegmentWrite8 (Address, (UINT8) (PciSegmentRead8 (Address) | OrData)); }
/** Writes an 8-bit PCI configuration register, and saves the value in the S3 script to be replayed on S3 resume. Writes the 8-bit PCI configuration register specified by Address with the value specified by Value. Value is returned. This function must guarantee that all PCI read and write operations are serialized. If any reserved bits in Address are set, then ASSERT(). @param Address Address that encodes the PCI Segment, Bus, Device, Function, and Register. @param Value The value to write. @return The value written to the PCI configuration register. **/ UINT8 EFIAPI S3PciSegmentWrite8 ( IN UINT64 Address, IN UINT8 Value ) { return InternalSavePciSegmentWrite8ValueToBootScript (Address, PciSegmentWrite8 (Address, Value)); }
/** Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit value, followed a bitwise OR with another 8-bit value. Reads the 8-bit PCI configuration register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 8-bit PCI configuration register specified by Address. The value written to the PCI configuration register is returned. This function must guarantee that all PCI read and write operations are serialized. If any reserved bits in Address are set, then ASSERT(). @param Address Address that encodes the PCI Segment, Bus, Device, Function and Register. @param AndData The value to AND with the PCI configuration register. @param OrData The value to OR with the result of the AND operation. @return The value written back to the PCI configuration register. **/ UINT8 EFIAPI PciSegmentAndThenOr8 ( IN UINT64 Address, IN UINT8 AndData, IN UINT8 OrData ) { return PciSegmentWrite8 (Address, (UINT8) ((PciSegmentRead8 (Address) & AndData) | OrData)); }
/** Reads a bit field in an 8-bit PCI configuration register, performs a bitwise AND, and writes the result back to the bit field in the 8-bit register. Reads the 8-bit PCI configuration register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 8-bit PCI configuration register specified by Address. The value written to the PCI configuration register is returned. This function must guarantee that all PCI read and write operations are serialized. Extra left bits in AndData are stripped. If any reserved bits in Address are set, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). @param Address PCI configuration register to write. @param StartBit The ordinal of the least significant bit in the bit field. Range 0..7. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..7. @param AndData The value to AND with the PCI configuration register. @return The value written back to the PCI configuration register. **/ UINT8 EFIAPI PciSegmentBitFieldAnd8 ( IN UINT64 Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 AndData ) { return PciSegmentWrite8 ( Address, BitFieldAnd8 (PciSegmentRead8 (Address), StartBit, EndBit, AndData) ); }
/** Writes a bit field to a PCI configuration register. Writes Value to the bit field of the PCI configuration register. The bit field is specified by the StartBit and the EndBit. All other bits in the destination PCI configuration register are preserved. The new value of the 8-bit register is returned. If any reserved bits in Address are set, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). @param Address PCI configuration register to write. @param StartBit The ordinal of the least significant bit in the bit field. Range 0..7. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..7. @param Value New value of the bit field. @return The value written back to the PCI configuration register. **/ UINT8 EFIAPI PciSegmentBitFieldWrite8 ( IN UINT64 Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 Value ) { return PciSegmentWrite8 ( Address, BitFieldWrite8 (PciSegmentRead8 (Address), StartBit, EndBit, Value) ); }
/** Copies the data in a caller supplied buffer to a specified range of PCI configuration space. Writes the range of PCI configuration registers specified by StartAddress and Size from the buffer specified by Buffer. This function only allows the PCI configuration registers from a single PCI function to be written. Size is returned. When possible 32-bit PCI configuration write cycles are used to write from StartAdress to StartAddress + Size. Due to alignment restrictions, 8-bit and 16-bit PCI configuration write cycles may be used at the beginning and the end of the range. If StartAddress > 0x0FFFFFFF, then ASSERT(). If ((StartAddress & 0xFFF) + Size) > 0x1000, then ASSERT(). If Size > 0 and Buffer is NULL, then ASSERT(). @param StartAddress Starting Address that encodes the PCI Segment, Bus, Device, Function and Register. @param Size Size in bytes of the transfer. @param Buffer Pointer to a buffer containing the data to write. @return Size **/ UINTN EFIAPI PciSegmentWriteBuffer ( IN UINT64 StartAddress, IN UINTN Size, IN VOID *Buffer ) { UINTN ReturnValue; ASSERT_INVALID_PCI_SEGMENT_ADDRESS (StartAddress, 0); ASSERT (((StartAddress & 0xFFF) + Size) <= 0x1000); if (Size == 0) { return 0; } ASSERT (Buffer != NULL); // // Save Size for return // ReturnValue = Size; if ((StartAddress & 1) != 0) { // // Write a byte if StartAddress is byte aligned // PciSegmentWrite8 (StartAddress, *(UINT8*)Buffer); StartAddress += sizeof (UINT8); Size -= sizeof (UINT8); Buffer = (UINT8*)Buffer + 1; } if (Size >= sizeof (UINT16) && (StartAddress & 2) != 0) { // // Write a word if StartAddress is word aligned // PciSegmentWrite16 (StartAddress, *(UINT16*)Buffer); StartAddress += sizeof (UINT16); Size -= sizeof (UINT16); Buffer = (UINT16*)Buffer + 1; } while (Size >= sizeof (UINT32)) { // // Write as many double words as possible // PciSegmentWrite32 (StartAddress, *(UINT32*)Buffer); StartAddress += sizeof (UINT32); Size -= sizeof (UINT32); Buffer = (UINT32*)Buffer + 1; } if (Size >= sizeof (UINT16)) { // // Write the last remaining word if exist // PciSegmentWrite16 (StartAddress, *(UINT16*)Buffer); StartAddress += sizeof (UINT16); Size -= sizeof (UINT16); Buffer = (UINT16*)Buffer + 1; } if (Size >= sizeof (UINT8)) { // // Write the last remaining byte if exist // PciSegmentWrite8 (StartAddress, *(UINT8*)Buffer); } return ReturnValue; }