* Copyright 2022 Haiku, Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#include "PMAPPhysicalPageMapper.h"
status_t
PMAPPhysicalPageMapper::GetPage(
phys_addr_t physicalAddress, addr_t* _virtualAddress, void** _handle)
{
ASSERT(physicalAddress < KERNEL_PMAP_SIZE);
*_virtualAddress = KERNEL_PMAP_BASE + physicalAddress;
*_handle = NULL;
return B_OK;
}
status_t
PMAPPhysicalPageMapper::PutPage(addr_t virtualAddress, void* handle)
{
return B_OK;
}
status_t
PMAPPhysicalPageMapper::MemsetPhysical(phys_addr_t address, int value, phys_size_t length)
{
ASSERT(address < KERNEL_PMAP_SIZE);
memset(reinterpret_cast<void*>(KERNEL_PMAP_BASE + address), value, length);
return B_OK;
}
status_t
PMAPPhysicalPageMapper::MemcpyFromPhysical(void* to, phys_addr_t from, size_t length, bool user)
{
if (user)
panic("MemcpyFromPhysical user not impl");
ASSERT(from < KERNEL_PMAP_SIZE);
memcpy(to, reinterpret_cast<void*>(KERNEL_PMAP_BASE + from), length);
return B_OK;
}
status_t
PMAPPhysicalPageMapper::MemcpyToPhysical(phys_addr_t to, const void* from, size_t length, bool user)
{
if (user)
panic("MemcpyToPhysical user not impl");
ASSERT(to < KERNEL_PMAP_SIZE);
memcpy(reinterpret_cast<void*>(KERNEL_PMAP_BASE + to), from, length);
return B_OK;
}
void
PMAPPhysicalPageMapper::MemcpyPhysicalPage(phys_addr_t to, phys_addr_t from)
{
ASSERT(to < KERNEL_PMAP_SIZE);
ASSERT(from < KERNEL_PMAP_SIZE);
memcpy(reinterpret_cast<void*>(KERNEL_PMAP_BASE + to),
reinterpret_cast<void*>(KERNEL_PMAP_BASE + from), B_PAGE_SIZE);
}
