xref: /openbmc/qemu/target/ppc/mmu-book3s-v3.h (revision 25268a18)
1 /*
2  *  PowerPC ISAV3 BookS emulation generic mmu definitions 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 #ifndef PPC_MMU_BOOK3S_V3_H
21 #define PPC_MMU_BOOK3S_V3_H
22 
23 #ifndef CONFIG_USER_ONLY
24 
25 /*
26  * Partition table definitions
27  */
28 #define PTCR_PATB               0x0FFFFFFFFFFFF000ULL /* Partition Table Base */
29 #define PTCR_PATS               0x000000000000001FULL /* Partition Table Size */
30 
31 /* Partition Table Entry Fields */
32 #define PATE0_HR 0x8000000000000000
33 
34 /*
35  * WARNING: This field doesn't actually exist in the final version of
36  * the architecture and is unused by hardware. However, qemu uses it
37  * as an indication of a radix guest in the pseudo-PATB entry that it
38  * maintains for SPAPR guests and in the migration stream, so we need
39  * to keep it around
40  */
41 #define PATE1_GR 0x8000000000000000
42 
43 /* Process Table Entry */
44 struct prtb_entry {
45     uint64_t prtbe0, prtbe1;
46 };
47 
48 #ifdef TARGET_PPC64
49 
50 /*
51  * tlbie[l] helper flags
52  *
53  * RIC, PRS, R and local are passed as flags in the last argument.
54  */
55 #define TLBIE_F_RIC_SHIFT       0
56 #define TLBIE_F_PRS_SHIFT       2
57 #define TLBIE_F_R_SHIFT         3
58 #define TLBIE_F_LOCAL_SHIFT     4
59 
60 #define TLBIE_F_RIC_MASK        (3 << TLBIE_F_RIC_SHIFT)
61 #define TLBIE_F_PRS             (1 << TLBIE_F_PRS_SHIFT)
62 #define TLBIE_F_R               (1 << TLBIE_F_R_SHIFT)
63 #define TLBIE_F_LOCAL           (1 << TLBIE_F_LOCAL_SHIFT)
64 
65 static inline bool ppc64_use_proc_tbl(PowerPCCPU *cpu)
66 {
67     return !!(cpu->env.spr[SPR_LPCR] & LPCR_UPRT);
68 }
69 
70 bool ppc64_v3_get_pate(PowerPCCPU *cpu, target_ulong lpid,
71                        ppc_v3_pate_t *entry);
72 
73 /*
74  * The LPCR:HR bit is a shortcut that avoids having to
75  * dig out the partition table in the fast path. This is
76  * also how the HW uses it.
77  */
78 static inline bool ppc64_v3_radix(PowerPCCPU *cpu)
79 {
80     return !!(cpu->env.spr[SPR_LPCR] & LPCR_HR);
81 }
82 
83 #endif /* TARGET_PPC64 */
84 
85 #endif /* CONFIG_USER_ONLY */
86 
87 #endif /* PPC_MMU_BOOK3S_V3_H */
88