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/* IBM_PROLOG_BEGIN_TAG
* This is an automatically generated prolog.
*
* $Source: src/lib/syscall_mm.C $
*
* IBM CONFIDENTIAL
*
* COPYRIGHT International Business Machines Corp. 2011-2012
*
* p1
*
* Object Code Only (OCO) source materials
* Licensed Internal Code Source Materials
* IBM HostBoot Licensed Internal Code
*
* The source code for this program is not published or other-
* wise divested of its trade secrets, irrespective of what has
* been deposited with the U.S. Copyright Office.
*
* Origin: 30
*
* IBM_PROLOG_END_TAG
*/
#include <sys/syscall.h>
#include <sys/mm.h>
#include <arch/ppc.H>
#include <kernel/vmmmgr.H>
using namespace Systemcalls;
/**
* System call to allocate a block of virtual memory within the base segment
*/
int mm_alloc_block(msg_q_t mq,void* va,uint64_t size)
{
return (int64_t)_syscall3(MM_ALLOC_BLOCK, mq, va, (void*)size);
}
/**
* System call to remove page(s) by a specified operation
*/
int mm_remove_pages(PAGE_REMOVAL_OPS i_op, void* i_vaddr, uint64_t i_size)
{
return (int64_t)_syscall3(MM_REMOVE_PAGES, (void*)i_op, i_vaddr,
(void*)i_size);
}
/*
* Call to flush out the instruction cache
* From the PowerPC ISA book II, section 1.8
* Instruction Storage
*/
void mm_icache_invalidate(void * i_addr, size_t i_cpu_word_count)
{
// Make sure 8 byte boundary
uint64_t addr = (uint64_t)i_addr & ~0x7ull;
uint64_t * dest = (uint64_t*)addr;
for(size_t i = 0; i < i_cpu_word_count; i += getCacheLineWords())
{
dcbst(dest);
dest += getCacheLineWords();
}
lwsync();
// According to core design team we only need to do a single icbi,
// since the i-cache is kept coherent with the d-cache. The single
// icbi invalidates the "scoreboard" in the core which, in combination
// with the isync, causes the core to go back out to l2-cache for any
// instructions past this.
icbi(reinterpret_cast<void*>(addr));
isync();
}
/**
* System call update permissions on a page for a given virtual address
*/
int mm_set_permission(void* va, uint64_t size, uint64_t access_type)
{
return (int64_t)_syscall3(MM_SET_PERMISSION, va, (void*)size, (void*)access_type);
}
/**
* System call to flush pages
*/
void mm_flush_pages(uint64_t i_sev)
{
_syscall1(MM_FLUSH_PAGES, (void*)i_sev);
}
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