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1/*
2 * Copyright (C) 2012,2013 - ARM Ltd
3 * Author: Marc Zyngier <marc.zyngier@arm.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef __ARM64_KVM_ARM_H__
19#define __ARM64_KVM_ARM_H__
20
21#include <asm/types.h>
22
23/* Hyp Configuration Register (HCR) bits */
24#define HCR_ID (UL(1) << 33)
25#define HCR_CD (UL(1) << 32)
26#define HCR_RW_SHIFT 31
27#define HCR_RW (UL(1) << HCR_RW_SHIFT)
28#define HCR_TRVM (UL(1) << 30)
29#define HCR_HCD (UL(1) << 29)
30#define HCR_TDZ (UL(1) << 28)
31#define HCR_TGE (UL(1) << 27)
32#define HCR_TVM (UL(1) << 26)
33#define HCR_TTLB (UL(1) << 25)
34#define HCR_TPU (UL(1) << 24)
35#define HCR_TPC (UL(1) << 23)
36#define HCR_TSW (UL(1) << 22)
37#define HCR_TAC (UL(1) << 21)
38#define HCR_TIDCP (UL(1) << 20)
39#define HCR_TSC (UL(1) << 19)
40#define HCR_TID3 (UL(1) << 18)
41#define HCR_TID2 (UL(1) << 17)
42#define HCR_TID1 (UL(1) << 16)
43#define HCR_TID0 (UL(1) << 15)
44#define HCR_TWE (UL(1) << 14)
45#define HCR_TWI (UL(1) << 13)
46#define HCR_DC (UL(1) << 12)
47#define HCR_BSU (3 << 10)
48#define HCR_BSU_IS (UL(1) << 10)
49#define HCR_FB (UL(1) << 9)
50#define HCR_VA (UL(1) << 8)
51#define HCR_VI (UL(1) << 7)
52#define HCR_VF (UL(1) << 6)
53#define HCR_AMO (UL(1) << 5)
54#define HCR_IMO (UL(1) << 4)
55#define HCR_FMO (UL(1) << 3)
56#define HCR_PTW (UL(1) << 2)
57#define HCR_SWIO (UL(1) << 1)
58#define HCR_VM (UL(1) << 0)
59
60/*
61 * The bits we set in HCR:
62 * RW: 64bit by default, can be overriden for 32bit VMs
63 * TAC: Trap ACTLR
64 * TSC: Trap SMC
65 * TSW: Trap cache operations by set/way
66 * TWI: Trap WFI
67 * TIDCP: Trap L2CTLR/L2ECTLR
68 * BSU_IS: Upgrade barriers to the inner shareable domain
69 * FB: Force broadcast of all maintainance operations
70 * AMO: Override CPSR.A and enable signaling with VA
71 * IMO: Override CPSR.I and enable signaling with VI
72 * FMO: Override CPSR.F and enable signaling with VF
73 * SWIO: Turn set/way invalidates into set/way clean+invalidate
74 */
75#define HCR_GUEST_FLAGS (HCR_TSC | HCR_TSW | HCR_TWI | HCR_VM | HCR_BSU_IS | \
76 HCR_FB | HCR_TAC | HCR_AMO | HCR_IMO | HCR_FMO | \
77 HCR_SWIO | HCR_TIDCP | HCR_RW)
78#define HCR_VIRT_EXCP_MASK (HCR_VA | HCR_VI | HCR_VF)
79
80/* Hyp System Control Register (SCTLR_EL2) bits */
81#define SCTLR_EL2_EE (1 << 25)
82#define SCTLR_EL2_WXN (1 << 19)
83#define SCTLR_EL2_I (1 << 12)
84#define SCTLR_EL2_SA (1 << 3)
85#define SCTLR_EL2_C (1 << 2)
86#define SCTLR_EL2_A (1 << 1)
87#define SCTLR_EL2_M 1
88#define SCTLR_EL2_FLAGS (SCTLR_EL2_M | SCTLR_EL2_A | SCTLR_EL2_C | \
89 SCTLR_EL2_SA | SCTLR_EL2_I)
90
91/* TCR_EL2 Registers bits */
92#define TCR_EL2_TBI (1 << 20)
93#define TCR_EL2_PS (7 << 16)
94#define TCR_EL2_PS_40B (2 << 16)
95#define TCR_EL2_TG0 (1 << 14)
96#define TCR_EL2_SH0 (3 << 12)
97#define TCR_EL2_ORGN0 (3 << 10)
98#define TCR_EL2_IRGN0 (3 << 8)
99#define TCR_EL2_T0SZ 0x3f
100#define TCR_EL2_MASK (TCR_EL2_TG0 | TCR_EL2_SH0 | \
101 TCR_EL2_ORGN0 | TCR_EL2_IRGN0 | TCR_EL2_T0SZ)
102
103#define TCR_EL2_FLAGS (TCR_EL2_PS_40B)
104
105/* VTCR_EL2 Registers bits */
106#define VTCR_EL2_PS_MASK (7 << 16)
107#define VTCR_EL2_PS_40B (2 << 16)
108#define VTCR_EL2_TG0_MASK (1 << 14)
109#define VTCR_EL2_TG0_4K (0 << 14)
110#define VTCR_EL2_TG0_64K (1 << 14)
111#define VTCR_EL2_SH0_MASK (3 << 12)
112#define VTCR_EL2_SH0_INNER (3 << 12)
113#define VTCR_EL2_ORGN0_MASK (3 << 10)
114#define VTCR_EL2_ORGN0_WBWA (1 << 10)
115#define VTCR_EL2_IRGN0_MASK (3 << 8)
116#define VTCR_EL2_IRGN0_WBWA (1 << 8)
117#define VTCR_EL2_SL0_MASK (3 << 6)
118#define VTCR_EL2_SL0_LVL1 (1 << 6)
119#define VTCR_EL2_T0SZ_MASK 0x3f
120#define VTCR_EL2_T0SZ_40B 24
121
122#ifdef CONFIG_ARM64_64K_PAGES
123/*
124 * Stage2 translation configuration:
125 * 40bits output (PS = 2)
126 * 40bits input (T0SZ = 24)
127 * 64kB pages (TG0 = 1)
128 * 2 level page tables (SL = 1)
129 */
130#define VTCR_EL2_FLAGS (VTCR_EL2_PS_40B | VTCR_EL2_TG0_64K | \
131 VTCR_EL2_SH0_INNER | VTCR_EL2_ORGN0_WBWA | \
132 VTCR_EL2_IRGN0_WBWA | VTCR_EL2_SL0_LVL1 | \
133 VTCR_EL2_T0SZ_40B)
134#define VTTBR_X (38 - VTCR_EL2_T0SZ_40B)
135#else
136/*
137 * Stage2 translation configuration:
138 * 40bits output (PS = 2)
139 * 40bits input (T0SZ = 24)
140 * 4kB pages (TG0 = 0)
141 * 3 level page tables (SL = 1)
142 */
143#define VTCR_EL2_FLAGS (VTCR_EL2_PS_40B | VTCR_EL2_TG0_4K | \
144 VTCR_EL2_SH0_INNER | VTCR_EL2_ORGN0_WBWA | \
145 VTCR_EL2_IRGN0_WBWA | VTCR_EL2_SL0_LVL1 | \
146 VTCR_EL2_T0SZ_40B)
147#define VTTBR_X (37 - VTCR_EL2_T0SZ_40B)
148#endif
149
150#define VTTBR_BADDR_SHIFT (VTTBR_X - 1)
151#define VTTBR_BADDR_MASK (((1LLU << (40 - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT)
152#define VTTBR_VMID_SHIFT (48LLU)
153#define VTTBR_VMID_MASK (0xffLLU << VTTBR_VMID_SHIFT)
154
155/* Hyp System Trap Register */
156#define HSTR_EL2_TTEE (1 << 16)
157#define HSTR_EL2_T(x) (1 << x)
158
159/* Hyp Coprocessor Trap Register */
160#define CPTR_EL2_TCPAC (1 << 31)
161#define CPTR_EL2_TTA (1 << 20)
162#define CPTR_EL2_TFP (1 << 10)
163
164/* Hyp Debug Configuration Register bits */
165#define MDCR_EL2_TDRA (1 << 11)
166#define MDCR_EL2_TDOSA (1 << 10)
167#define MDCR_EL2_TDA (1 << 9)
168#define MDCR_EL2_TDE (1 << 8)
169#define MDCR_EL2_HPME (1 << 7)
170#define MDCR_EL2_TPM (1 << 6)
171#define MDCR_EL2_TPMCR (1 << 5)
172#define MDCR_EL2_HPMN_MASK (0x1F)
173
174/* Exception Syndrome Register (ESR) bits */
175#define ESR_EL2_EC_SHIFT (26)
176#define ESR_EL2_EC (0x3fU << ESR_EL2_EC_SHIFT)
177#define ESR_EL2_IL (1U << 25)
178#define ESR_EL2_ISS (ESR_EL2_IL - 1)
179#define ESR_EL2_ISV_SHIFT (24)
180#define ESR_EL2_ISV (1U << ESR_EL2_ISV_SHIFT)
181#define ESR_EL2_SAS_SHIFT (22)
182#define ESR_EL2_SAS (3U << ESR_EL2_SAS_SHIFT)
183#define ESR_EL2_SSE (1 << 21)
184#define ESR_EL2_SRT_SHIFT (16)
185#define ESR_EL2_SRT_MASK (0x1f << ESR_EL2_SRT_SHIFT)
186#define ESR_EL2_SF (1 << 15)
187#define ESR_EL2_AR (1 << 14)
188#define ESR_EL2_EA (1 << 9)
189#define ESR_EL2_CM (1 << 8)
190#define ESR_EL2_S1PTW (1 << 7)
191#define ESR_EL2_WNR (1 << 6)
192#define ESR_EL2_FSC (0x3f)
193#define ESR_EL2_FSC_TYPE (0x3c)
194
195#define ESR_EL2_CV_SHIFT (24)
196#define ESR_EL2_CV (1U << ESR_EL2_CV_SHIFT)
197#define ESR_EL2_COND_SHIFT (20)
198#define ESR_EL2_COND (0xfU << ESR_EL2_COND_SHIFT)
199
200
201#define FSC_FAULT (0x04)
202#define FSC_PERM (0x0c)
203
204/* Hyp Prefetch Fault Address Register (HPFAR/HDFAR) */
205#define HPFAR_MASK (~0xFUL)
206
207#define ESR_EL2_EC_UNKNOWN (0x00)
208#define ESR_EL2_EC_WFI (0x01)
209#define ESR_EL2_EC_CP15_32 (0x03)
210#define ESR_EL2_EC_CP15_64 (0x04)
211#define ESR_EL2_EC_CP14_MR (0x05)
212#define ESR_EL2_EC_CP14_LS (0x06)
213#define ESR_EL2_EC_FP_ASIMD (0x07)
214#define ESR_EL2_EC_CP10_ID (0x08)
215#define ESR_EL2_EC_CP14_64 (0x0C)
216#define ESR_EL2_EC_ILL_ISS (0x0E)
217#define ESR_EL2_EC_SVC32 (0x11)
218#define ESR_EL2_EC_HVC32 (0x12)
219#define ESR_EL2_EC_SMC32 (0x13)
220#define ESR_EL2_EC_SVC64 (0x15)
221#define ESR_EL2_EC_HVC64 (0x16)
222#define ESR_EL2_EC_SMC64 (0x17)
223#define ESR_EL2_EC_SYS64 (0x18)
224#define ESR_EL2_EC_IABT (0x20)
225#define ESR_EL2_EC_IABT_HYP (0x21)
226#define ESR_EL2_EC_PC_ALIGN (0x22)
227#define ESR_EL2_EC_DABT (0x24)
228#define ESR_EL2_EC_DABT_HYP (0x25)
229#define ESR_EL2_EC_SP_ALIGN (0x26)
230#define ESR_EL2_EC_FP_EXC32 (0x28)
231#define ESR_EL2_EC_FP_EXC64 (0x2C)
232#define ESR_EL2_EC_SERRROR (0x2F)
233#define ESR_EL2_EC_BREAKPT (0x30)
234#define ESR_EL2_EC_BREAKPT_HYP (0x31)
235#define ESR_EL2_EC_SOFTSTP (0x32)
236#define ESR_EL2_EC_SOFTSTP_HYP (0x33)
237#define ESR_EL2_EC_WATCHPT (0x34)
238#define ESR_EL2_EC_WATCHPT_HYP (0x35)
239#define ESR_EL2_EC_BKPT32 (0x38)
240#define ESR_EL2_EC_VECTOR32 (0x3A)
241#define ESR_EL2_EC_BRK64 (0x3C)
242
243#define ESR_EL2_EC_xABT_xFSR_EXTABT 0x10
244
245#endif /* __ARM64_KVM_ARM_H__ */