Translation range generators. More...

#include <amdgpu_vm.hh>

Inheritance diagram for gem5::AMDGPUVM::AGPTranslationGen:

Public Member Functions
	AGPTranslationGen (AMDGPUVM *_vm, Addr vaddr, Addr size)

Public Member Functions inherited from gem5::TranslationGen
	TranslationGen (Addr new_start, Addr new_size)
	The starting virtual address and the size of the entire region being translated.

virtual	~TranslationGen ()

Addr	start () const

Addr	size () const

const_iterator	begin () const

const_iterator	end () const

Private Member Functions
void	translate (Range &range) const override
	Subclasses implement this function to complete TranslationGen.

Private Attributes
AMDGPUVM *	vm

Additional Inherited Members
Public Types inherited from gem5::TranslationGen
using	const_iterator = TranslationGenConstIterator

Protected Attributes inherited from gem5::TranslationGen
Addr	_start

Addr	_size

Detailed Description

Translation range generators.

AGP - Legacy interface to device memory. Addr range is set via MMIO GART - Legacy privledged translation table. Table in device memory MMHUB - Shadow range of VRAM

Definition at line 313 of file amdgpu_vm.hh.

Constructor & Destructor Documentation

◆ AGPTranslationGen()

gem5::AMDGPUVM::AGPTranslationGen::AGPTranslationGen	(	AMDGPUVM *	_vm,
		Addr	vaddr,
		Addr	size )

inline

Definition at line 321 of file amdgpu_vm.hh.

Member Function Documentation

◆ translate()

void gem5::AMDGPUVM::AGPTranslationGen::translate ( Range & range ) const

overrideprivatevirtual

Subclasses implement this function to complete TranslationGen.

It should accept a Range reference which will have its "vaddr" field set to the virtual address to translate, and the "size" field set to the remaining size of the entire region being translated.

If there is a fault performing the translation of "vaddr", then this function should set the "fault" field of range and return.

If the translation was successful, this method should set "paddr" to the corresponding physical address, and set "size" to the number of bytes corresponding to the translation. Or more precisely, size should be set to the maximum "N" where vaddr + n maps to paddr + n for all 0 <= n <= N.

Implements gem5::TranslationGen.

Definition at line 315 of file amdgpu_vm.cc.

References AMDGPU_AGP_PAGE_SIZE, DPRINTF, gem5::AMDGPUVM::getAGPBase(), gem5::AMDGPUVM::getAGPBot(), gem5::AMDGPUVM::inAGP(), gem5::TranslationGen::Range::paddr, gem5::roundUp(), gem5::TranslationGen::Range::size, gem5::TranslationGen::Range::vaddr, and vm.