2 * Copyright (C) 2013 - ARM Ltd
3 * Author: Marc Zyngier <marc.zyngier@arm.com>
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.
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.
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/>.
21 #include <asm/memory.h>
22 #include <asm/sysreg.h>
24 #define ESR_ELx_EC_UNKNOWN (0x00)
25 #define ESR_ELx_EC_WFx (0x01)
26 /* Unallocated EC: 0x02 */
27 #define ESR_ELx_EC_CP15_32 (0x03)
28 #define ESR_ELx_EC_CP15_64 (0x04)
29 #define ESR_ELx_EC_CP14_MR (0x05)
30 #define ESR_ELx_EC_CP14_LS (0x06)
31 #define ESR_ELx_EC_FP_ASIMD (0x07)
32 #define ESR_ELx_EC_CP10_ID (0x08)
33 /* Unallocated EC: 0x09 - 0x0B */
34 #define ESR_ELx_EC_CP14_64 (0x0C)
35 /* Unallocated EC: 0x0d */
36 #define ESR_ELx_EC_ILL (0x0E)
37 /* Unallocated EC: 0x0F - 0x10 */
38 #define ESR_ELx_EC_SVC32 (0x11)
39 #define ESR_ELx_EC_HVC32 (0x12)
40 #define ESR_ELx_EC_SMC32 (0x13)
41 /* Unallocated EC: 0x14 */
42 #define ESR_ELx_EC_SVC64 (0x15)
43 #define ESR_ELx_EC_HVC64 (0x16)
44 #define ESR_ELx_EC_SMC64 (0x17)
45 #define ESR_ELx_EC_SYS64 (0x18)
46 #define ESR_ELx_EC_SVE (0x19)
47 /* Unallocated EC: 0x1A - 0x1E */
48 #define ESR_ELx_EC_IMP_DEF (0x1f)
49 #define ESR_ELx_EC_IABT_LOW (0x20)
50 #define ESR_ELx_EC_IABT_CUR (0x21)
51 #define ESR_ELx_EC_PC_ALIGN (0x22)
52 /* Unallocated EC: 0x23 */
53 #define ESR_ELx_EC_DABT_LOW (0x24)
54 #define ESR_ELx_EC_DABT_CUR (0x25)
55 #define ESR_ELx_EC_SP_ALIGN (0x26)
56 /* Unallocated EC: 0x27 */
57 #define ESR_ELx_EC_FP_EXC32 (0x28)
58 /* Unallocated EC: 0x29 - 0x2B */
59 #define ESR_ELx_EC_FP_EXC64 (0x2C)
60 /* Unallocated EC: 0x2D - 0x2E */
61 #define ESR_ELx_EC_SERROR (0x2F)
62 #define ESR_ELx_EC_BREAKPT_LOW (0x30)
63 #define ESR_ELx_EC_BREAKPT_CUR (0x31)
64 #define ESR_ELx_EC_SOFTSTP_LOW (0x32)
65 #define ESR_ELx_EC_SOFTSTP_CUR (0x33)
66 #define ESR_ELx_EC_WATCHPT_LOW (0x34)
67 #define ESR_ELx_EC_WATCHPT_CUR (0x35)
68 /* Unallocated EC: 0x36 - 0x37 */
69 #define ESR_ELx_EC_BKPT32 (0x38)
70 /* Unallocated EC: 0x39 */
71 #define ESR_ELx_EC_VECTOR32 (0x3A)
72 /* Unallocted EC: 0x3B */
73 #define ESR_ELx_EC_BRK64 (0x3C)
74 /* Unallocated EC: 0x3D - 0x3F */
75 #define ESR_ELx_EC_MAX (0x3F)
77 #define ESR_ELx_EC_SHIFT (26)
78 #define ESR_ELx_EC_MASK (UL(0x3F) << ESR_ELx_EC_SHIFT)
79 #define ESR_ELx_EC(esr) (((esr) & ESR_ELx_EC_MASK) >> ESR_ELx_EC_SHIFT)
81 #define ESR_ELx_IL_SHIFT (25)
82 #define ESR_ELx_IL (UL(1) << ESR_ELx_IL_SHIFT)
83 #define ESR_ELx_ISS_MASK (ESR_ELx_IL - 1)
85 /* ISS field definitions shared by different classes */
86 #define ESR_ELx_WNR_SHIFT (6)
87 #define ESR_ELx_WNR (UL(1) << ESR_ELx_WNR_SHIFT)
89 /* Shared ISS field definitions for Data/Instruction aborts */
90 #define ESR_ELx_SET_SHIFT (11)
91 #define ESR_ELx_SET_MASK (UL(3) << ESR_ELx_SET_SHIFT)
92 #define ESR_ELx_FnV_SHIFT (10)
93 #define ESR_ELx_FnV (UL(1) << ESR_ELx_FnV_SHIFT)
94 #define ESR_ELx_EA_SHIFT (9)
95 #define ESR_ELx_EA (UL(1) << ESR_ELx_EA_SHIFT)
96 #define ESR_ELx_S1PTW_SHIFT (7)
97 #define ESR_ELx_S1PTW (UL(1) << ESR_ELx_S1PTW_SHIFT)
99 /* Shared ISS fault status code(IFSC/DFSC) for Data/Instruction aborts */
100 #define ESR_ELx_FSC (0x3F)
101 #define ESR_ELx_FSC_TYPE (0x3C)
102 #define ESR_ELx_FSC_EXTABT (0x10)
103 #define ESR_ELx_FSC_ACCESS (0x08)
104 #define ESR_ELx_FSC_FAULT (0x04)
105 #define ESR_ELx_FSC_PERM (0x0C)
107 /* ISS field definitions for Data Aborts */
108 #define ESR_ELx_ISV_SHIFT (24)
109 #define ESR_ELx_ISV (UL(1) << ESR_ELx_ISV_SHIFT)
110 #define ESR_ELx_SAS_SHIFT (22)
111 #define ESR_ELx_SAS (UL(3) << ESR_ELx_SAS_SHIFT)
112 #define ESR_ELx_SSE_SHIFT (21)
113 #define ESR_ELx_SSE (UL(1) << ESR_ELx_SSE_SHIFT)
114 #define ESR_ELx_SRT_SHIFT (16)
115 #define ESR_ELx_SRT_MASK (UL(0x1F) << ESR_ELx_SRT_SHIFT)
116 #define ESR_ELx_SF_SHIFT (15)
117 #define ESR_ELx_SF (UL(1) << ESR_ELx_SF_SHIFT)
118 #define ESR_ELx_AR_SHIFT (14)
119 #define ESR_ELx_AR (UL(1) << ESR_ELx_AR_SHIFT)
120 #define ESR_ELx_CM_SHIFT (8)
121 #define ESR_ELx_CM (UL(1) << ESR_ELx_CM_SHIFT)
123 /* ISS field definitions for exceptions taken in to Hyp */
124 #define ESR_ELx_CV (UL(1) << 24)
125 #define ESR_ELx_COND_SHIFT (20)
126 #define ESR_ELx_COND_MASK (UL(0xF) << ESR_ELx_COND_SHIFT)
127 #define ESR_ELx_WFx_ISS_WFE (UL(1) << 0)
128 #define ESR_ELx_xVC_IMM_MASK ((1UL << 16) - 1)
130 /* ESR value templates for specific events */
132 /* BRK instruction trap from AArch64 state */
133 #define ESR_ELx_VAL_BRK64(imm) \
134 ((ESR_ELx_EC_BRK64 << ESR_ELx_EC_SHIFT) | ESR_ELx_IL | \
137 /* ISS field definitions for System instruction traps */
138 #define ESR_ELx_SYS64_ISS_RES0_SHIFT 22
139 #define ESR_ELx_SYS64_ISS_RES0_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_RES0_SHIFT)
140 #define ESR_ELx_SYS64_ISS_DIR_MASK 0x1
141 #define ESR_ELx_SYS64_ISS_DIR_READ 0x1
142 #define ESR_ELx_SYS64_ISS_DIR_WRITE 0x0
144 #define ESR_ELx_SYS64_ISS_RT_SHIFT 5
145 #define ESR_ELx_SYS64_ISS_RT_MASK (UL(0x1f) << ESR_ELx_SYS64_ISS_RT_SHIFT)
146 #define ESR_ELx_SYS64_ISS_CRM_SHIFT 1
147 #define ESR_ELx_SYS64_ISS_CRM_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRM_SHIFT)
148 #define ESR_ELx_SYS64_ISS_CRN_SHIFT 10
149 #define ESR_ELx_SYS64_ISS_CRN_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRN_SHIFT)
150 #define ESR_ELx_SYS64_ISS_OP1_SHIFT 14
151 #define ESR_ELx_SYS64_ISS_OP1_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP1_SHIFT)
152 #define ESR_ELx_SYS64_ISS_OP2_SHIFT 17
153 #define ESR_ELx_SYS64_ISS_OP2_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP2_SHIFT)
154 #define ESR_ELx_SYS64_ISS_OP0_SHIFT 20
155 #define ESR_ELx_SYS64_ISS_OP0_MASK (UL(0x3) << ESR_ELx_SYS64_ISS_OP0_SHIFT)
156 #define ESR_ELx_SYS64_ISS_SYS_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \
157 ESR_ELx_SYS64_ISS_OP1_MASK | \
158 ESR_ELx_SYS64_ISS_OP2_MASK | \
159 ESR_ELx_SYS64_ISS_CRN_MASK | \
160 ESR_ELx_SYS64_ISS_CRM_MASK)
161 #define ESR_ELx_SYS64_ISS_SYS_VAL(op0, op1, op2, crn, crm) \
162 (((op0) << ESR_ELx_SYS64_ISS_OP0_SHIFT) | \
163 ((op1) << ESR_ELx_SYS64_ISS_OP1_SHIFT) | \
164 ((op2) << ESR_ELx_SYS64_ISS_OP2_SHIFT) | \
165 ((crn) << ESR_ELx_SYS64_ISS_CRN_SHIFT) | \
166 ((crm) << ESR_ELx_SYS64_ISS_CRM_SHIFT))
168 #define ESR_ELx_SYS64_ISS_SYS_OP_MASK (ESR_ELx_SYS64_ISS_SYS_MASK | \
169 ESR_ELx_SYS64_ISS_DIR_MASK)
171 * User space cache operations have the following sysreg encoding
172 * in System instructions.
173 * op0=1, op1=3, op2=1, crn=7, crm={ 5, 10, 11, 12, 14 }, WRITE (L=0)
175 #define ESR_ELx_SYS64_ISS_CRM_DC_CIVAC 14
176 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAP 12
177 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAU 11
178 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAC 10
179 #define ESR_ELx_SYS64_ISS_CRM_IC_IVAU 5
181 #define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \
182 ESR_ELx_SYS64_ISS_OP1_MASK | \
183 ESR_ELx_SYS64_ISS_OP2_MASK | \
184 ESR_ELx_SYS64_ISS_CRN_MASK | \
185 ESR_ELx_SYS64_ISS_DIR_MASK)
186 #define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_VAL \
187 (ESR_ELx_SYS64_ISS_SYS_VAL(1, 3, 1, 7, 0) | \
188 ESR_ELx_SYS64_ISS_DIR_WRITE)
190 #define ESR_ELx_SYS64_ISS_SYS_CTR ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 1, 0, 0)
191 #define ESR_ELx_SYS64_ISS_SYS_CTR_READ (ESR_ELx_SYS64_ISS_SYS_CTR | \
192 ESR_ELx_SYS64_ISS_DIR_READ)
194 #define ESR_ELx_SYS64_ISS_SYS_CNTVCT (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 2, 14, 0) | \
195 ESR_ELx_SYS64_ISS_DIR_READ)
197 #define ESR_ELx_SYS64_ISS_SYS_CNTFRQ (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 0, 14, 0) | \
198 ESR_ELx_SYS64_ISS_DIR_READ)
200 #define esr_sys64_to_sysreg(e) \
201 sys_reg((((e) & ESR_ELx_SYS64_ISS_OP0_MASK) >> \
202 ESR_ELx_SYS64_ISS_OP0_SHIFT), \
203 (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \
204 ESR_ELx_SYS64_ISS_OP1_SHIFT), \
205 (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \
206 ESR_ELx_SYS64_ISS_CRN_SHIFT), \
207 (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \
208 ESR_ELx_SYS64_ISS_CRM_SHIFT), \
209 (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \
210 ESR_ELx_SYS64_ISS_OP2_SHIFT))
212 #define esr_cp15_to_sysreg(e) \
214 (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \
215 ESR_ELx_SYS64_ISS_OP1_SHIFT), \
216 (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \
217 ESR_ELx_SYS64_ISS_CRN_SHIFT), \
218 (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \
219 ESR_ELx_SYS64_ISS_CRM_SHIFT), \
220 (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \
221 ESR_ELx_SYS64_ISS_OP2_SHIFT))
224 #include <asm/types.h>
226 static inline bool esr_is_data_abort(u32 esr)
228 const u32 ec = ESR_ELx_EC(esr);
230 return ec == ESR_ELx_EC_DABT_LOW || ec == ESR_ELx_EC_DABT_CUR;
233 const char *esr_get_class_string(u32 esr);
234 #endif /* __ASSEMBLY */
236 #endif /* __ASM_ESR_H */