1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2013 - ARM Ltd
4 * Author: Marc Zyngier <marc.zyngier@arm.com>
5 */
6
7 #ifndef __ASM_ESR_H
8 #define __ASM_ESR_H
9
10 #include <asm/memory.h>
11 #include <asm/sysreg.h>
12
13 #define ESR_ELx_EC_UNKNOWN (0x00)
14 #define ESR_ELx_EC_WFx (0x01)
15 /* Unallocated EC: 0x02 */
16 #define ESR_ELx_EC_CP15_32 (0x03)
17 #define ESR_ELx_EC_CP15_64 (0x04)
18 #define ESR_ELx_EC_CP14_MR (0x05)
19 #define ESR_ELx_EC_CP14_LS (0x06)
20 #define ESR_ELx_EC_FP_ASIMD (0x07)
21 #define ESR_ELx_EC_CP10_ID (0x08) /* EL2 only */
22 #define ESR_ELx_EC_PAC (0x09) /* EL2 and above */
23 /* Unallocated EC: 0x0A - 0x0B */
24 #define ESR_ELx_EC_CP14_64 (0x0C)
25 #define ESR_ELx_EC_BTI (0x0D)
26 #define ESR_ELx_EC_ILL (0x0E)
27 /* Unallocated EC: 0x0F - 0x10 */
28 #define ESR_ELx_EC_SVC32 (0x11)
29 #define ESR_ELx_EC_HVC32 (0x12) /* EL2 only */
30 #define ESR_ELx_EC_SMC32 (0x13) /* EL2 and above */
31 /* Unallocated EC: 0x14 */
32 #define ESR_ELx_EC_SVC64 (0x15)
33 #define ESR_ELx_EC_HVC64 (0x16) /* EL2 and above */
34 #define ESR_ELx_EC_SMC64 (0x17) /* EL2 and above */
35 #define ESR_ELx_EC_SYS64 (0x18)
36 #define ESR_ELx_EC_SVE (0x19)
37 #define ESR_ELx_EC_ERET (0x1a) /* EL2 only */
38 /* Unallocated EC: 0x1B */
39 #define ESR_ELx_EC_FPAC (0x1C) /* EL1 and above */
40 /* Unallocated EC: 0x1D - 0x1E */
41 #define ESR_ELx_EC_IMP_DEF (0x1f) /* EL3 only */
42 #define ESR_ELx_EC_IABT_LOW (0x20)
43 #define ESR_ELx_EC_IABT_CUR (0x21)
44 #define ESR_ELx_EC_PC_ALIGN (0x22)
45 /* Unallocated EC: 0x23 */
46 #define ESR_ELx_EC_DABT_LOW (0x24)
47 #define ESR_ELx_EC_DABT_CUR (0x25)
48 #define ESR_ELx_EC_SP_ALIGN (0x26)
49 /* Unallocated EC: 0x27 */
50 #define ESR_ELx_EC_FP_EXC32 (0x28)
51 /* Unallocated EC: 0x29 - 0x2B */
52 #define ESR_ELx_EC_FP_EXC64 (0x2C)
53 /* Unallocated EC: 0x2D - 0x2E */
54 #define ESR_ELx_EC_SERROR (0x2F)
55 #define ESR_ELx_EC_BREAKPT_LOW (0x30)
56 #define ESR_ELx_EC_BREAKPT_CUR (0x31)
57 #define ESR_ELx_EC_SOFTSTP_LOW (0x32)
58 #define ESR_ELx_EC_SOFTSTP_CUR (0x33)
59 #define ESR_ELx_EC_WATCHPT_LOW (0x34)
60 #define ESR_ELx_EC_WATCHPT_CUR (0x35)
61 /* Unallocated EC: 0x36 - 0x37 */
62 #define ESR_ELx_EC_BKPT32 (0x38)
63 /* Unallocated EC: 0x39 */
64 #define ESR_ELx_EC_VECTOR32 (0x3A) /* EL2 only */
65 /* Unallocated EC: 0x3B */
66 #define ESR_ELx_EC_BRK64 (0x3C)
67 /* Unallocated EC: 0x3D - 0x3F */
68 #define ESR_ELx_EC_MAX (0x3F)
69
70 #define ESR_ELx_EC_SHIFT (26)
71 #define ESR_ELx_EC_MASK (UL(0x3F) << ESR_ELx_EC_SHIFT)
72 #define ESR_ELx_EC(esr) (((esr) & ESR_ELx_EC_MASK) >> ESR_ELx_EC_SHIFT)
73
74 #define ESR_ELx_IL_SHIFT (25)
75 #define ESR_ELx_IL (UL(1) << ESR_ELx_IL_SHIFT)
76 #define ESR_ELx_ISS_MASK (ESR_ELx_IL - 1)
77
78 /* ISS field definitions shared by different classes */
79 #define ESR_ELx_WNR_SHIFT (6)
80 #define ESR_ELx_WNR (UL(1) << ESR_ELx_WNR_SHIFT)
81
82 /* Asynchronous Error Type */
83 #define ESR_ELx_IDS_SHIFT (24)
84 #define ESR_ELx_IDS (UL(1) << ESR_ELx_IDS_SHIFT)
85 #define ESR_ELx_AET_SHIFT (10)
86 #define ESR_ELx_AET (UL(0x7) << ESR_ELx_AET_SHIFT)
87
88 #define ESR_ELx_AET_UC (UL(0) << ESR_ELx_AET_SHIFT)
89 #define ESR_ELx_AET_UEU (UL(1) << ESR_ELx_AET_SHIFT)
90 #define ESR_ELx_AET_UEO (UL(2) << ESR_ELx_AET_SHIFT)
91 #define ESR_ELx_AET_UER (UL(3) << ESR_ELx_AET_SHIFT)
92 #define ESR_ELx_AET_CE (UL(6) << ESR_ELx_AET_SHIFT)
93
94 /* Shared ISS field definitions for Data/Instruction aborts */
95 #define ESR_ELx_SET_SHIFT (11)
96 #define ESR_ELx_SET_MASK (UL(3) << ESR_ELx_SET_SHIFT)
97 #define ESR_ELx_FnV_SHIFT (10)
98 #define ESR_ELx_FnV (UL(1) << ESR_ELx_FnV_SHIFT)
99 #define ESR_ELx_EA_SHIFT (9)
100 #define ESR_ELx_EA (UL(1) << ESR_ELx_EA_SHIFT)
101 #define ESR_ELx_S1PTW_SHIFT (7)
102 #define ESR_ELx_S1PTW (UL(1) << ESR_ELx_S1PTW_SHIFT)
103
104 /* Shared ISS fault status code(IFSC/DFSC) for Data/Instruction aborts */
105 #define ESR_ELx_FSC (0x3F)
106 #define ESR_ELx_FSC_TYPE (0x3C)
107 #define ESR_ELx_FSC_LEVEL (0x03)
108 #define ESR_ELx_FSC_EXTABT (0x10)
109 #define ESR_ELx_FSC_SERROR (0x11)
110 #define ESR_ELx_FSC_ACCESS (0x08)
111 #define ESR_ELx_FSC_FAULT (0x04)
112 #define ESR_ELx_FSC_PERM (0x0C)
113
114 /* ISS field definitions for Data Aborts */
115 #define ESR_ELx_ISV_SHIFT (24)
116 #define ESR_ELx_ISV (UL(1) << ESR_ELx_ISV_SHIFT)
117 #define ESR_ELx_SAS_SHIFT (22)
118 #define ESR_ELx_SAS (UL(3) << ESR_ELx_SAS_SHIFT)
119 #define ESR_ELx_SSE_SHIFT (21)
120 #define ESR_ELx_SSE (UL(1) << ESR_ELx_SSE_SHIFT)
121 #define ESR_ELx_SRT_SHIFT (16)
122 #define ESR_ELx_SRT_MASK (UL(0x1F) << ESR_ELx_SRT_SHIFT)
123 #define ESR_ELx_SF_SHIFT (15)
124 #define ESR_ELx_SF (UL(1) << ESR_ELx_SF_SHIFT)
125 #define ESR_ELx_AR_SHIFT (14)
126 #define ESR_ELx_AR (UL(1) << ESR_ELx_AR_SHIFT)
127 #define ESR_ELx_CM_SHIFT (8)
128 #define ESR_ELx_CM (UL(1) << ESR_ELx_CM_SHIFT)
129
130 /* ISS field definitions for exceptions taken in to Hyp */
131 #define ESR_ELx_CV (UL(1) << 24)
132 #define ESR_ELx_COND_SHIFT (20)
133 #define ESR_ELx_COND_MASK (UL(0xF) << ESR_ELx_COND_SHIFT)
134 #define ESR_ELx_WFx_ISS_TI (UL(1) << 0)
135 #define ESR_ELx_WFx_ISS_WFI (UL(0) << 0)
136 #define ESR_ELx_WFx_ISS_WFE (UL(1) << 0)
137 #define ESR_ELx_xVC_IMM_MASK ((1UL << 16) - 1)
138
139 #define DISR_EL1_IDS (UL(1) << 24)
140 /*
141 * DISR_EL1 and ESR_ELx share the bottom 13 bits, but the RES0 bits may mean
142 * different things in the future...
143 */
144 #define DISR_EL1_ESR_MASK (ESR_ELx_AET | ESR_ELx_EA | ESR_ELx_FSC)
145
146 /* ESR value templates for specific events */
147 #define ESR_ELx_WFx_MASK (ESR_ELx_EC_MASK | ESR_ELx_WFx_ISS_TI)
148 #define ESR_ELx_WFx_WFI_VAL ((ESR_ELx_EC_WFx << ESR_ELx_EC_SHIFT) | \
149 ESR_ELx_WFx_ISS_WFI)
150
151 /* BRK instruction trap from AArch64 state */
152 #define ESR_ELx_BRK64_ISS_COMMENT_MASK 0xffff
153
154 /* ISS field definitions for System instruction traps */
155 #define ESR_ELx_SYS64_ISS_RES0_SHIFT 22
156 #define ESR_ELx_SYS64_ISS_RES0_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_RES0_SHIFT)
157 #define ESR_ELx_SYS64_ISS_DIR_MASK 0x1
158 #define ESR_ELx_SYS64_ISS_DIR_READ 0x1
159 #define ESR_ELx_SYS64_ISS_DIR_WRITE 0x0
160
161 #define ESR_ELx_SYS64_ISS_RT_SHIFT 5
162 #define ESR_ELx_SYS64_ISS_RT_MASK (UL(0x1f) << ESR_ELx_SYS64_ISS_RT_SHIFT)
163 #define ESR_ELx_SYS64_ISS_CRM_SHIFT 1
164 #define ESR_ELx_SYS64_ISS_CRM_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRM_SHIFT)
165 #define ESR_ELx_SYS64_ISS_CRN_SHIFT 10
166 #define ESR_ELx_SYS64_ISS_CRN_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRN_SHIFT)
167 #define ESR_ELx_SYS64_ISS_OP1_SHIFT 14
168 #define ESR_ELx_SYS64_ISS_OP1_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP1_SHIFT)
169 #define ESR_ELx_SYS64_ISS_OP2_SHIFT 17
170 #define ESR_ELx_SYS64_ISS_OP2_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP2_SHIFT)
171 #define ESR_ELx_SYS64_ISS_OP0_SHIFT 20
172 #define ESR_ELx_SYS64_ISS_OP0_MASK (UL(0x3) << ESR_ELx_SYS64_ISS_OP0_SHIFT)
173 #define ESR_ELx_SYS64_ISS_SYS_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \
174 ESR_ELx_SYS64_ISS_OP1_MASK | \
175 ESR_ELx_SYS64_ISS_OP2_MASK | \
176 ESR_ELx_SYS64_ISS_CRN_MASK | \
177 ESR_ELx_SYS64_ISS_CRM_MASK)
178 #define ESR_ELx_SYS64_ISS_SYS_VAL(op0, op1, op2, crn, crm) \
179 (((op0) << ESR_ELx_SYS64_ISS_OP0_SHIFT) | \
180 ((op1) << ESR_ELx_SYS64_ISS_OP1_SHIFT) | \
181 ((op2) << ESR_ELx_SYS64_ISS_OP2_SHIFT) | \
182 ((crn) << ESR_ELx_SYS64_ISS_CRN_SHIFT) | \
183 ((crm) << ESR_ELx_SYS64_ISS_CRM_SHIFT))
184
185 #define ESR_ELx_SYS64_ISS_SYS_OP_MASK (ESR_ELx_SYS64_ISS_SYS_MASK | \
186 ESR_ELx_SYS64_ISS_DIR_MASK)
187 #define ESR_ELx_SYS64_ISS_RT(esr) \
188 (((esr) & ESR_ELx_SYS64_ISS_RT_MASK) >> ESR_ELx_SYS64_ISS_RT_SHIFT)
189 /*
190 * User space cache operations have the following sysreg encoding
191 * in System instructions.
192 * op0=1, op1=3, op2=1, crn=7, crm={ 5, 10, 11, 12, 13, 14 }, WRITE (L=0)
193 */
194 #define ESR_ELx_SYS64_ISS_CRM_DC_CIVAC 14
195 #define ESR_ELx_SYS64_ISS_CRM_DC_CVADP 13
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 * User space MRS operations which are supported for emulation
211 * have the following sysreg encoding in System instructions.
212 * op0 = 3, op1= 0, crn = 0, {crm = 0, 4-7}, READ (L = 1)
213 */
214 #define ESR_ELx_SYS64_ISS_SYS_MRS_OP_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \
215 ESR_ELx_SYS64_ISS_OP1_MASK | \
216 ESR_ELx_SYS64_ISS_CRN_MASK | \
217 ESR_ELx_SYS64_ISS_DIR_MASK)
218 #define ESR_ELx_SYS64_ISS_SYS_MRS_OP_VAL \
219 (ESR_ELx_SYS64_ISS_SYS_VAL(3, 0, 0, 0, 0) | \
220 ESR_ELx_SYS64_ISS_DIR_READ)
221
222 #define ESR_ELx_SYS64_ISS_SYS_CTR ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 1, 0, 0)
223 #define ESR_ELx_SYS64_ISS_SYS_CTR_READ (ESR_ELx_SYS64_ISS_SYS_CTR | \
224 ESR_ELx_SYS64_ISS_DIR_READ)
225
226 #define ESR_ELx_SYS64_ISS_SYS_CNTVCT (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 2, 14, 0) | \
227 ESR_ELx_SYS64_ISS_DIR_READ)
228
229 #define ESR_ELx_SYS64_ISS_SYS_CNTFRQ (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 0, 14, 0) | \
230 ESR_ELx_SYS64_ISS_DIR_READ)
231
232 #define esr_sys64_to_sysreg(e) \
233 sys_reg((((e) & ESR_ELx_SYS64_ISS_OP0_MASK) >> \
234 ESR_ELx_SYS64_ISS_OP0_SHIFT), \
235 (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \
236 ESR_ELx_SYS64_ISS_OP1_SHIFT), \
237 (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \
238 ESR_ELx_SYS64_ISS_CRN_SHIFT), \
239 (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \
240 ESR_ELx_SYS64_ISS_CRM_SHIFT), \
241 (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \
242 ESR_ELx_SYS64_ISS_OP2_SHIFT))
243
244 #define esr_cp15_to_sysreg(e) \
245 sys_reg(3, \
246 (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \
247 ESR_ELx_SYS64_ISS_OP1_SHIFT), \
248 (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \
249 ESR_ELx_SYS64_ISS_CRN_SHIFT), \
250 (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \
251 ESR_ELx_SYS64_ISS_CRM_SHIFT), \
252 (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \
253 ESR_ELx_SYS64_ISS_OP2_SHIFT))
254
255 /*
256 * ISS field definitions for floating-point exception traps
257 * (FP_EXC_32/FP_EXC_64).
258 *
259 * (The FPEXC_* constants are used instead for common bits.)
260 */
261
262 #define ESR_ELx_FP_EXC_TFV (UL(1) << 23)
263
264 /*
265 * ISS field definitions for CP15 accesses
266 */
267 #define ESR_ELx_CP15_32_ISS_DIR_MASK 0x1
268 #define ESR_ELx_CP15_32_ISS_DIR_READ 0x1
269 #define ESR_ELx_CP15_32_ISS_DIR_WRITE 0x0
270
271 #define ESR_ELx_CP15_32_ISS_RT_SHIFT 5
272 #define ESR_ELx_CP15_32_ISS_RT_MASK (UL(0x1f) << ESR_ELx_CP15_32_ISS_RT_SHIFT)
273 #define ESR_ELx_CP15_32_ISS_CRM_SHIFT 1
274 #define ESR_ELx_CP15_32_ISS_CRM_MASK (UL(0xf) << ESR_ELx_CP15_32_ISS_CRM_SHIFT)
275 #define ESR_ELx_CP15_32_ISS_CRN_SHIFT 10
276 #define ESR_ELx_CP15_32_ISS_CRN_MASK (UL(0xf) << ESR_ELx_CP15_32_ISS_CRN_SHIFT)
277 #define ESR_ELx_CP15_32_ISS_OP1_SHIFT 14
278 #define ESR_ELx_CP15_32_ISS_OP1_MASK (UL(0x7) << ESR_ELx_CP15_32_ISS_OP1_SHIFT)
279 #define ESR_ELx_CP15_32_ISS_OP2_SHIFT 17
280 #define ESR_ELx_CP15_32_ISS_OP2_MASK (UL(0x7) << ESR_ELx_CP15_32_ISS_OP2_SHIFT)
281
282 #define ESR_ELx_CP15_32_ISS_SYS_MASK (ESR_ELx_CP15_32_ISS_OP1_MASK | \
283 ESR_ELx_CP15_32_ISS_OP2_MASK | \
284 ESR_ELx_CP15_32_ISS_CRN_MASK | \
285 ESR_ELx_CP15_32_ISS_CRM_MASK | \
286 ESR_ELx_CP15_32_ISS_DIR_MASK)
287 #define ESR_ELx_CP15_32_ISS_SYS_VAL(op1, op2, crn, crm) \
288 (((op1) << ESR_ELx_CP15_32_ISS_OP1_SHIFT) | \
289 ((op2) << ESR_ELx_CP15_32_ISS_OP2_SHIFT) | \
290 ((crn) << ESR_ELx_CP15_32_ISS_CRN_SHIFT) | \
291 ((crm) << ESR_ELx_CP15_32_ISS_CRM_SHIFT))
292
293 #define ESR_ELx_CP15_64_ISS_DIR_MASK 0x1
294 #define ESR_ELx_CP15_64_ISS_DIR_READ 0x1
295 #define ESR_ELx_CP15_64_ISS_DIR_WRITE 0x0
296
297 #define ESR_ELx_CP15_64_ISS_RT_SHIFT 5
298 #define ESR_ELx_CP15_64_ISS_RT_MASK (UL(0x1f) << ESR_ELx_CP15_64_ISS_RT_SHIFT)
299
300 #define ESR_ELx_CP15_64_ISS_RT2_SHIFT 10
301 #define ESR_ELx_CP15_64_ISS_RT2_MASK (UL(0x1f) << ESR_ELx_CP15_64_ISS_RT2_SHIFT)
302
303 #define ESR_ELx_CP15_64_ISS_OP1_SHIFT 16
304 #define ESR_ELx_CP15_64_ISS_OP1_MASK (UL(0xf) << ESR_ELx_CP15_64_ISS_OP1_SHIFT)
305 #define ESR_ELx_CP15_64_ISS_CRM_SHIFT 1
306 #define ESR_ELx_CP15_64_ISS_CRM_MASK (UL(0xf) << ESR_ELx_CP15_64_ISS_CRM_SHIFT)
307
308 #define ESR_ELx_CP15_64_ISS_SYS_VAL(op1, crm) \
309 (((op1) << ESR_ELx_CP15_64_ISS_OP1_SHIFT) | \
310 ((crm) << ESR_ELx_CP15_64_ISS_CRM_SHIFT))
311
312 #define ESR_ELx_CP15_64_ISS_SYS_MASK (ESR_ELx_CP15_64_ISS_OP1_MASK | \
313 ESR_ELx_CP15_64_ISS_CRM_MASK | \
314 ESR_ELx_CP15_64_ISS_DIR_MASK)
315
316 #define ESR_ELx_CP15_64_ISS_SYS_CNTVCT (ESR_ELx_CP15_64_ISS_SYS_VAL(1, 14) | \
317 ESR_ELx_CP15_64_ISS_DIR_READ)
318
319 #define ESR_ELx_CP15_32_ISS_SYS_CNTFRQ (ESR_ELx_CP15_32_ISS_SYS_VAL(0, 0, 14, 0) |\
320 ESR_ELx_CP15_32_ISS_DIR_READ)
321
322 #ifndef __ASSEMBLY__
323 #include <asm/types.h>
324
esr_is_data_abort(u32 esr)325 static inline bool esr_is_data_abort(u32 esr)
326 {
327 const u32 ec = ESR_ELx_EC(esr);
328
329 return ec == ESR_ELx_EC_DABT_LOW || ec == ESR_ELx_EC_DABT_CUR;
330 }
331
332 const char *esr_get_class_string(u32 esr);
333 #endif /* __ASSEMBLY */
334
335 #endif /* __ASM_ESR_H */
336
