Merge remote-tracking branch 'remotes/alistair23/tags/pull-riscv-to-apply-20211022...
[qemu.git] / target / ppc / mmu-book3s-v3.c
1 /*
2 * PowerPC ISAV3 BookS emulation generic mmu helpers for qemu.
3 *
4 * Copyright (c) 2017 Suraj Jitindar Singh, IBM Corporation
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "qemu/osdep.h"
21 #include "cpu.h"
22 #include "mmu-hash64.h"
23 #include "mmu-book3s-v3.h"
24 #include "mmu-radix64.h"
25
26 bool ppc64_v3_get_pate(PowerPCCPU *cpu, target_ulong lpid, ppc_v3_pate_t *entry)
27 {
28 uint64_t patb = cpu->env.spr[SPR_PTCR] & PTCR_PATB;
29 uint64_t pats = cpu->env.spr[SPR_PTCR] & PTCR_PATS;
30
31 /* Calculate number of entries */
32 pats = 1ull << (pats + 12 - 4);
33 if (pats <= lpid) {
34 return false;
35 }
36
37 /* Grab entry */
38 patb += 16 * lpid;
39 entry->dw0 = ldq_phys(CPU(cpu)->as, patb);
40 entry->dw1 = ldq_phys(CPU(cpu)->as, patb + 8);
41 return true;
42 }