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/*
* PowerPC ISAV3 BookS emulation generic mmu helpers for qemu.
*
* Copyright (c) 2017 Suraj Jitindar Singh, IBM Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "mmu-hash64.h"
#include "mmu-book3s-v3.h"
#include "mmu-radix64.h"
bool ppc64_v3_get_pate(PowerPCCPU *cpu, target_ulong lpid, ppc_v3_pate_t *entry)
{
uint64_t patb = cpu->env.spr[SPR_PTCR] & PTCR_PATB;
uint64_t pats = cpu->env.spr[SPR_PTCR] & PTCR_PATS;
/* Check if partition table is properly aligned */
if (patb & MAKE_64BIT_MASK(0, pats + 12)) {
return false;
}
/* Calculate number of entries */
pats = 1ull << (pats + 12 - 4);
if (pats <= lpid) {
return false;
}
/* Grab entry */
patb += 16 * lpid;
entry->dw0 = ldq_phys(CPU(cpu)->as, patb);
entry->dw1 = ldq_phys(CPU(cpu)->as, patb + 8);
return true;
}
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