1 /*
2 * Copyright (C) 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 __ASM_ESR_H
19 #define __ASM_ESR_H
20
21 #include <asm/memory.h>
22 #include <asm/sysreg.h>
23
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)
76
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)
80
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)
84
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)
88
89 /* Asynchronous Error Type */
90 #define ESR_ELx_IDS_SHIFT (24)
91 #define ESR_ELx_IDS (UL(1) << ESR_ELx_IDS_SHIFT)
92 #define ESR_ELx_AET_SHIFT (10)
93 #define ESR_ELx_AET (UL(0x7) << ESR_ELx_AET_SHIFT)
94
95 #define ESR_ELx_AET_UC (UL(0) << ESR_ELx_AET_SHIFT)
96 #define ESR_ELx_AET_UEU (UL(1) << ESR_ELx_AET_SHIFT)
97 #define ESR_ELx_AET_UEO (UL(2) << ESR_ELx_AET_SHIFT)
98 #define ESR_ELx_AET_UER (UL(3) << ESR_ELx_AET_SHIFT)
99 #define ESR_ELx_AET_CE (UL(6) << ESR_ELx_AET_SHIFT)
100
101 /* Shared ISS field definitions for Data/Instruction aborts */
102 #define ESR_ELx_SET_SHIFT (11)
103 #define ESR_ELx_SET_MASK (UL(3) << ESR_ELx_SET_SHIFT)
104 #define ESR_ELx_FnV_SHIFT (10)
105 #define ESR_ELx_FnV (UL(1) << ESR_ELx_FnV_SHIFT)
106 #define ESR_ELx_EA_SHIFT (9)
107 #define ESR_ELx_EA (UL(1) << ESR_ELx_EA_SHIFT)
108 #define ESR_ELx_S1PTW_SHIFT (7)
109 #define ESR_ELx_S1PTW (UL(1) << ESR_ELx_S1PTW_SHIFT)
110
111 /* Shared ISS fault status code(IFSC/DFSC) for Data/Instruction aborts */
112 #define ESR_ELx_FSC (0x3F)
113 #define ESR_ELx_FSC_TYPE (0x3C)
114 #define ESR_ELx_FSC_EXTABT (0x10)
115 #define ESR_ELx_FSC_SERROR (0x11)
116 #define ESR_ELx_FSC_ACCESS (0x08)
117 #define ESR_ELx_FSC_FAULT (0x04)
118 #define ESR_ELx_FSC_PERM (0x0C)
119
120 /* ISS field definitions for Data Aborts */
121 #define ESR_ELx_ISV_SHIFT (24)
122 #define ESR_ELx_ISV (UL(1) << ESR_ELx_ISV_SHIFT)
123 #define ESR_ELx_SAS_SHIFT (22)
124 #define ESR_ELx_SAS (UL(3) << ESR_ELx_SAS_SHIFT)
125 #define ESR_ELx_SSE_SHIFT (21)
126 #define ESR_ELx_SSE (UL(1) << ESR_ELx_SSE_SHIFT)
127 #define ESR_ELx_SRT_SHIFT (16)
128 #define ESR_ELx_SRT_MASK (UL(0x1F) << ESR_ELx_SRT_SHIFT)
129 #define ESR_ELx_SF_SHIFT (15)
130 #define ESR_ELx_SF (UL(1) << ESR_ELx_SF_SHIFT)
131 #define ESR_ELx_AR_SHIFT (14)
132 #define ESR_ELx_AR (UL(1) << ESR_ELx_AR_SHIFT)
133 #define ESR_ELx_CM_SHIFT (8)
134 #define ESR_ELx_CM (UL(1) << ESR_ELx_CM_SHIFT)
135
136 /* ISS field definitions for exceptions taken in to Hyp */
137 #define ESR_ELx_CV (UL(1) << 24)
138 #define ESR_ELx_COND_SHIFT (20)
139 #define ESR_ELx_COND_MASK (UL(0xF) << ESR_ELx_COND_SHIFT)
140 #define ESR_ELx_WFx_ISS_WFE (UL(1) << 0)
141 #define ESR_ELx_xVC_IMM_MASK ((1UL << 16) - 1)
142
143 #define DISR_EL1_IDS (UL(1) << 24)
144 /*
145 * DISR_EL1 and ESR_ELx share the bottom 13 bits, but the RES0 bits may mean
146 * different things in the future...
147 */
148 #define DISR_EL1_ESR_MASK (ESR_ELx_AET | ESR_ELx_EA | ESR_ELx_FSC)
149
150 /* ESR value templates for specific events */
151
152 /* BRK instruction trap from AArch64 state */
153 #define ESR_ELx_VAL_BRK64(imm) \
154 ((ESR_ELx_EC_BRK64 << ESR_ELx_EC_SHIFT) | ESR_ELx_IL | \
155 ((imm) & 0xffff))
156
157 /* ISS field definitions for System instruction traps */
158 #define ESR_ELx_SYS64_ISS_RES0_SHIFT 22
159 #define ESR_ELx_SYS64_ISS_RES0_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_RES0_SHIFT)
160 #define ESR_ELx_SYS64_ISS_DIR_MASK 0x1
161 #define ESR_ELx_SYS64_ISS_DIR_READ 0x1
162 #define ESR_ELx_SYS64_ISS_DIR_WRITE 0x0
163
164 #define ESR_ELx_SYS64_ISS_RT_SHIFT 5
165 #define ESR_ELx_SYS64_ISS_RT_MASK (UL(0x1f) << ESR_ELx_SYS64_ISS_RT_SHIFT)
166 #define ESR_ELx_SYS64_ISS_CRM_SHIFT 1
167 #define ESR_ELx_SYS64_ISS_CRM_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRM_SHIFT)
168 #define ESR_ELx_SYS64_ISS_CRN_SHIFT 10
169 #define ESR_ELx_SYS64_ISS_CRN_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRN_SHIFT)
170 #define ESR_ELx_SYS64_ISS_OP1_SHIFT 14
171 #define ESR_ELx_SYS64_ISS_OP1_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP1_SHIFT)
172 #define ESR_ELx_SYS64_ISS_OP2_SHIFT 17
173 #define ESR_ELx_SYS64_ISS_OP2_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP2_SHIFT)
174 #define ESR_ELx_SYS64_ISS_OP0_SHIFT 20
175 #define ESR_ELx_SYS64_ISS_OP0_MASK (UL(0x3) << ESR_ELx_SYS64_ISS_OP0_SHIFT)
176 #define ESR_ELx_SYS64_ISS_SYS_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \
177 ESR_ELx_SYS64_ISS_OP1_MASK | \
178 ESR_ELx_SYS64_ISS_OP2_MASK | \
179 ESR_ELx_SYS64_ISS_CRN_MASK | \
180 ESR_ELx_SYS64_ISS_CRM_MASK)
181 #define ESR_ELx_SYS64_ISS_SYS_VAL(op0, op1, op2, crn, crm) \
182 (((op0) << ESR_ELx_SYS64_ISS_OP0_SHIFT) | \
183 ((op1) << ESR_ELx_SYS64_ISS_OP1_SHIFT) | \
184 ((op2) << ESR_ELx_SYS64_ISS_OP2_SHIFT) | \
185 ((crn) << ESR_ELx_SYS64_ISS_CRN_SHIFT) | \
186 ((crm) << ESR_ELx_SYS64_ISS_CRM_SHIFT))
187
188 #define ESR_ELx_SYS64_ISS_SYS_OP_MASK (ESR_ELx_SYS64_ISS_SYS_MASK | \
189 ESR_ELx_SYS64_ISS_DIR_MASK)
190 /*
191 * User space cache operations have the following sysreg encoding
192 * in System instructions.
193 * op0=1, op1=3, op2=1, crn=7, crm={ 5, 10, 11, 12, 14 }, WRITE (L=0)
194 */
195 #define ESR_ELx_SYS64_ISS_CRM_DC_CIVAC 14
196 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAP 12
197 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAU 11
198 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAC 10
199 #define ESR_ELx_SYS64_ISS_CRM_IC_IVAU 5
200
201 #define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \
202 ESR_ELx_SYS64_ISS_OP1_MASK | \
203 ESR_ELx_SYS64_ISS_OP2_MASK | \
204 ESR_ELx_SYS64_ISS_CRN_MASK | \
205 ESR_ELx_SYS64_ISS_DIR_MASK)
206 #define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_VAL \
207 (ESR_ELx_SYS64_ISS_SYS_VAL(1, 3, 1, 7, 0) | \
208 ESR_ELx_SYS64_ISS_DIR_WRITE)
209
210 #define ESR_ELx_SYS64_ISS_SYS_CTR ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 1, 0, 0)
211 #define ESR_ELx_SYS64_ISS_SYS_CTR_READ (ESR_ELx_SYS64_ISS_SYS_CTR | \
212 ESR_ELx_SYS64_ISS_DIR_READ)
213
214 #define ESR_ELx_SYS64_ISS_SYS_CNTVCT (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 2, 14, 0) | \
215 ESR_ELx_SYS64_ISS_DIR_READ)
216
217 #define ESR_ELx_SYS64_ISS_SYS_CNTFRQ (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 0, 14, 0) | \
218 ESR_ELx_SYS64_ISS_DIR_READ)
219
220 #define esr_sys64_to_sysreg(e) \
221 sys_reg((((e) & ESR_ELx_SYS64_ISS_OP0_MASK) >> \
222 ESR_ELx_SYS64_ISS_OP0_SHIFT), \
223 (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \
224 ESR_ELx_SYS64_ISS_OP1_SHIFT), \
225 (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \
226 ESR_ELx_SYS64_ISS_CRN_SHIFT), \
227 (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \
228 ESR_ELx_SYS64_ISS_CRM_SHIFT), \
229 (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \
230 ESR_ELx_SYS64_ISS_OP2_SHIFT))
231
232 #define esr_cp15_to_sysreg(e) \
233 sys_reg(3, \
234 (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \
235 ESR_ELx_SYS64_ISS_OP1_SHIFT), \
236 (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \
237 ESR_ELx_SYS64_ISS_CRN_SHIFT), \
238 (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \
239 ESR_ELx_SYS64_ISS_CRM_SHIFT), \
240 (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \
241 ESR_ELx_SYS64_ISS_OP2_SHIFT))
242
243 /*
244 * ISS field definitions for floating-point exception traps
245 * (FP_EXC_32/FP_EXC_64).
246 *
247 * (The FPEXC_* constants are used instead for common bits.)
248 */
249
250 #define ESR_ELx_FP_EXC_TFV (UL(1) << 23)
251
252 #ifndef __ASSEMBLY__
253 #include <asm/types.h>
254
esr_is_data_abort(u32 esr)255 static inline bool esr_is_data_abort(u32 esr)
256 {
257 const u32 ec = ESR_ELx_EC(esr);
258
259 return ec == ESR_ELx_EC_DABT_LOW || ec == ESR_ELx_EC_DABT_CUR;
260 }
261
262 const char *esr_get_class_string(u32 esr);
263 #endif /* __ASSEMBLY */
264
265 #endif /* __ASM_ESR_H */
266
