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) /* EL2 only */
33 #define ESR_ELx_EC_PAC (0x09) /* EL2 and above */
34 /* Unallocated EC: 0x0A - 0x0B */
35 #define ESR_ELx_EC_CP14_64 (0x0C)
36 /* Unallocated EC: 0x0d */
37 #define ESR_ELx_EC_ILL (0x0E)
38 /* Unallocated EC: 0x0F - 0x10 */
39 #define ESR_ELx_EC_SVC32 (0x11)
40 #define ESR_ELx_EC_HVC32 (0x12) /* EL2 only */
41 #define ESR_ELx_EC_SMC32 (0x13) /* EL2 and above */
42 /* Unallocated EC: 0x14 */
43 #define ESR_ELx_EC_SVC64 (0x15)
44 #define ESR_ELx_EC_HVC64 (0x16) /* EL2 and above */
45 #define ESR_ELx_EC_SMC64 (0x17) /* EL2 and above */
46 #define ESR_ELx_EC_SYS64 (0x18)
47 #define ESR_ELx_EC_SVE (0x19)
48 /* Unallocated EC: 0x1A - 0x1E */
49 #define ESR_ELx_EC_IMP_DEF (0x1f) /* EL3 only */
50 #define ESR_ELx_EC_IABT_LOW (0x20)
51 #define ESR_ELx_EC_IABT_CUR (0x21)
52 #define ESR_ELx_EC_PC_ALIGN (0x22)
53 /* Unallocated EC: 0x23 */
54 #define ESR_ELx_EC_DABT_LOW (0x24)
55 #define ESR_ELx_EC_DABT_CUR (0x25)
56 #define ESR_ELx_EC_SP_ALIGN (0x26)
57 /* Unallocated EC: 0x27 */
58 #define ESR_ELx_EC_FP_EXC32 (0x28)
59 /* Unallocated EC: 0x29 - 0x2B */
60 #define ESR_ELx_EC_FP_EXC64 (0x2C)
61 /* Unallocated EC: 0x2D - 0x2E */
62 #define ESR_ELx_EC_SERROR (0x2F)
63 #define ESR_ELx_EC_BREAKPT_LOW (0x30)
64 #define ESR_ELx_EC_BREAKPT_CUR (0x31)
65 #define ESR_ELx_EC_SOFTSTP_LOW (0x32)
66 #define ESR_ELx_EC_SOFTSTP_CUR (0x33)
67 #define ESR_ELx_EC_WATCHPT_LOW (0x34)
68 #define ESR_ELx_EC_WATCHPT_CUR (0x35)
69 /* Unallocated EC: 0x36 - 0x37 */
70 #define ESR_ELx_EC_BKPT32 (0x38)
71 /* Unallocated EC: 0x39 */
72 #define ESR_ELx_EC_VECTOR32 (0x3A) /* EL2 only */
73 /* Unallocted EC: 0x3B */
74 #define ESR_ELx_EC_BRK64 (0x3C)
75 /* Unallocated EC: 0x3D - 0x3F */
76 #define ESR_ELx_EC_MAX (0x3F)
78 #define ESR_ELx_EC_SHIFT (26)
79 #define ESR_ELx_EC_MASK (UL(0x3F) << ESR_ELx_EC_SHIFT)
80 #define ESR_ELx_EC(esr) (((esr) & ESR_ELx_EC_MASK) >> ESR_ELx_EC_SHIFT)
82 #define ESR_ELx_IL_SHIFT (25)
83 #define ESR_ELx_IL (UL(1) << ESR_ELx_IL_SHIFT)
84 #define ESR_ELx_ISS_MASK (ESR_ELx_IL - 1)
86 /* ISS field definitions shared by different classes */
87 #define ESR_ELx_WNR_SHIFT (6)
88 #define ESR_ELx_WNR (UL(1) << ESR_ELx_WNR_SHIFT)
90 /* Asynchronous Error Type */
91 #define ESR_ELx_IDS_SHIFT (24)
92 #define ESR_ELx_IDS (UL(1) << ESR_ELx_IDS_SHIFT)
93 #define ESR_ELx_AET_SHIFT (10)
94 #define ESR_ELx_AET (UL(0x7) << ESR_ELx_AET_SHIFT)
96 #define ESR_ELx_AET_UC (UL(0) << ESR_ELx_AET_SHIFT)
97 #define ESR_ELx_AET_UEU (UL(1) << ESR_ELx_AET_SHIFT)
98 #define ESR_ELx_AET_UEO (UL(2) << ESR_ELx_AET_SHIFT)
99 #define ESR_ELx_AET_UER (UL(3) << ESR_ELx_AET_SHIFT)
100 #define ESR_ELx_AET_CE (UL(6) << ESR_ELx_AET_SHIFT)
102 /* Shared ISS field definitions for Data/Instruction aborts */
103 #define ESR_ELx_SET_SHIFT (11)
104 #define ESR_ELx_SET_MASK (UL(3) << ESR_ELx_SET_SHIFT)
105 #define ESR_ELx_FnV_SHIFT (10)
106 #define ESR_ELx_FnV (UL(1) << ESR_ELx_FnV_SHIFT)
107 #define ESR_ELx_EA_SHIFT (9)
108 #define ESR_ELx_EA (UL(1) << ESR_ELx_EA_SHIFT)
109 #define ESR_ELx_S1PTW_SHIFT (7)
110 #define ESR_ELx_S1PTW (UL(1) << ESR_ELx_S1PTW_SHIFT)
112 /* Shared ISS fault status code(IFSC/DFSC) for Data/Instruction aborts */
113 #define ESR_ELx_FSC (0x3F)
114 #define ESR_ELx_FSC_TYPE (0x3C)
115 #define ESR_ELx_FSC_EXTABT (0x10)
116 #define ESR_ELx_FSC_SERROR (0x11)
117 #define ESR_ELx_FSC_ACCESS (0x08)
118 #define ESR_ELx_FSC_FAULT (0x04)
119 #define ESR_ELx_FSC_PERM (0x0C)
121 /* ISS field definitions for Data Aborts */
122 #define ESR_ELx_ISV_SHIFT (24)
123 #define ESR_ELx_ISV (UL(1) << ESR_ELx_ISV_SHIFT)
124 #define ESR_ELx_SAS_SHIFT (22)
125 #define ESR_ELx_SAS (UL(3) << ESR_ELx_SAS_SHIFT)
126 #define ESR_ELx_SSE_SHIFT (21)
127 #define ESR_ELx_SSE (UL(1) << ESR_ELx_SSE_SHIFT)
128 #define ESR_ELx_SRT_SHIFT (16)
129 #define ESR_ELx_SRT_MASK (UL(0x1F) << ESR_ELx_SRT_SHIFT)
130 #define ESR_ELx_SF_SHIFT (15)
131 #define ESR_ELx_SF (UL(1) << ESR_ELx_SF_SHIFT)
132 #define ESR_ELx_AR_SHIFT (14)
133 #define ESR_ELx_AR (UL(1) << ESR_ELx_AR_SHIFT)
134 #define ESR_ELx_CM_SHIFT (8)
135 #define ESR_ELx_CM (UL(1) << ESR_ELx_CM_SHIFT)
137 /* ISS field definitions for exceptions taken in to Hyp */
138 #define ESR_ELx_CV (UL(1) << 24)
139 #define ESR_ELx_COND_SHIFT (20)
140 #define ESR_ELx_COND_MASK (UL(0xF) << ESR_ELx_COND_SHIFT)
141 #define ESR_ELx_WFx_ISS_TI (UL(1) << 0)
142 #define ESR_ELx_WFx_ISS_WFI (UL(0) << 0)
143 #define ESR_ELx_WFx_ISS_WFE (UL(1) << 0)
144 #define ESR_ELx_xVC_IMM_MASK ((1UL << 16) - 1)
146 #define DISR_EL1_IDS (UL(1) << 24)
148 * DISR_EL1 and ESR_ELx share the bottom 13 bits, but the RES0 bits may mean
149 * different things in the future...
151 #define DISR_EL1_ESR_MASK (ESR_ELx_AET | ESR_ELx_EA | ESR_ELx_FSC)
153 /* ESR value templates for specific events */
154 #define ESR_ELx_WFx_MASK (ESR_ELx_EC_MASK | ESR_ELx_WFx_ISS_TI)
155 #define ESR_ELx_WFx_WFI_VAL ((ESR_ELx_EC_WFx << ESR_ELx_EC_SHIFT) | \
158 /* BRK instruction trap from AArch64 state */
159 #define ESR_ELx_VAL_BRK64(imm) \
160 ((ESR_ELx_EC_BRK64 << ESR_ELx_EC_SHIFT) | ESR_ELx_IL | \
163 /* ISS field definitions for System instruction traps */
164 #define ESR_ELx_SYS64_ISS_RES0_SHIFT 22
165 #define ESR_ELx_SYS64_ISS_RES0_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_RES0_SHIFT)
166 #define ESR_ELx_SYS64_ISS_DIR_MASK 0x1
167 #define ESR_ELx_SYS64_ISS_DIR_READ 0x1
168 #define ESR_ELx_SYS64_ISS_DIR_WRITE 0x0
170 #define ESR_ELx_SYS64_ISS_RT_SHIFT 5
171 #define ESR_ELx_SYS64_ISS_RT_MASK (UL(0x1f) << ESR_ELx_SYS64_ISS_RT_SHIFT)
172 #define ESR_ELx_SYS64_ISS_CRM_SHIFT 1
173 #define ESR_ELx_SYS64_ISS_CRM_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRM_SHIFT)
174 #define ESR_ELx_SYS64_ISS_CRN_SHIFT 10
175 #define ESR_ELx_SYS64_ISS_CRN_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRN_SHIFT)
176 #define ESR_ELx_SYS64_ISS_OP1_SHIFT 14
177 #define ESR_ELx_SYS64_ISS_OP1_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP1_SHIFT)
178 #define ESR_ELx_SYS64_ISS_OP2_SHIFT 17
179 #define ESR_ELx_SYS64_ISS_OP2_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP2_SHIFT)
180 #define ESR_ELx_SYS64_ISS_OP0_SHIFT 20
181 #define ESR_ELx_SYS64_ISS_OP0_MASK (UL(0x3) << ESR_ELx_SYS64_ISS_OP0_SHIFT)
182 #define ESR_ELx_SYS64_ISS_SYS_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \
183 ESR_ELx_SYS64_ISS_OP1_MASK | \
184 ESR_ELx_SYS64_ISS_OP2_MASK | \
185 ESR_ELx_SYS64_ISS_CRN_MASK | \
186 ESR_ELx_SYS64_ISS_CRM_MASK)
187 #define ESR_ELx_SYS64_ISS_SYS_VAL(op0, op1, op2, crn, crm) \
188 (((op0) << ESR_ELx_SYS64_ISS_OP0_SHIFT) | \
189 ((op1) << ESR_ELx_SYS64_ISS_OP1_SHIFT) | \
190 ((op2) << ESR_ELx_SYS64_ISS_OP2_SHIFT) | \
191 ((crn) << ESR_ELx_SYS64_ISS_CRN_SHIFT) | \
192 ((crm) << ESR_ELx_SYS64_ISS_CRM_SHIFT))
194 #define ESR_ELx_SYS64_ISS_SYS_OP_MASK (ESR_ELx_SYS64_ISS_SYS_MASK | \
195 ESR_ELx_SYS64_ISS_DIR_MASK)
196 #define ESR_ELx_SYS64_ISS_RT(esr) \
197 (((esr) & ESR_ELx_SYS64_ISS_RT_MASK) >> ESR_ELx_SYS64_ISS_RT_SHIFT)
199 * User space cache operations have the following sysreg encoding
200 * in System instructions.
201 * op0=1, op1=3, op2=1, crn=7, crm={ 5, 10, 11, 12, 14 }, WRITE (L=0)
203 #define ESR_ELx_SYS64_ISS_CRM_DC_CIVAC 14
204 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAP 12
205 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAU 11
206 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAC 10
207 #define ESR_ELx_SYS64_ISS_CRM_IC_IVAU 5
209 #define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \
210 ESR_ELx_SYS64_ISS_OP1_MASK | \
211 ESR_ELx_SYS64_ISS_OP2_MASK | \
212 ESR_ELx_SYS64_ISS_CRN_MASK | \
213 ESR_ELx_SYS64_ISS_DIR_MASK)
214 #define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_VAL \
215 (ESR_ELx_SYS64_ISS_SYS_VAL(1, 3, 1, 7, 0) | \
216 ESR_ELx_SYS64_ISS_DIR_WRITE)
218 * User space MRS operations which are supported for emulation
219 * have the following sysreg encoding in System instructions.
220 * op0 = 3, op1= 0, crn = 0, {crm = 0, 4-7}, READ (L = 1)
222 #define ESR_ELx_SYS64_ISS_SYS_MRS_OP_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \
223 ESR_ELx_SYS64_ISS_OP1_MASK | \
224 ESR_ELx_SYS64_ISS_CRN_MASK | \
225 ESR_ELx_SYS64_ISS_DIR_MASK)
226 #define ESR_ELx_SYS64_ISS_SYS_MRS_OP_VAL \
227 (ESR_ELx_SYS64_ISS_SYS_VAL(3, 0, 0, 0, 0) | \
228 ESR_ELx_SYS64_ISS_DIR_READ)
230 #define ESR_ELx_SYS64_ISS_SYS_CTR ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 1, 0, 0)
231 #define ESR_ELx_SYS64_ISS_SYS_CTR_READ (ESR_ELx_SYS64_ISS_SYS_CTR | \
232 ESR_ELx_SYS64_ISS_DIR_READ)
234 #define ESR_ELx_SYS64_ISS_SYS_CNTVCT (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 2, 14, 0) | \
235 ESR_ELx_SYS64_ISS_DIR_READ)
237 #define ESR_ELx_SYS64_ISS_SYS_CNTFRQ (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 0, 14, 0) | \
238 ESR_ELx_SYS64_ISS_DIR_READ)
240 #define esr_sys64_to_sysreg(e) \
241 sys_reg((((e) & ESR_ELx_SYS64_ISS_OP0_MASK) >> \
242 ESR_ELx_SYS64_ISS_OP0_SHIFT), \
243 (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \
244 ESR_ELx_SYS64_ISS_OP1_SHIFT), \
245 (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \
246 ESR_ELx_SYS64_ISS_CRN_SHIFT), \
247 (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \
248 ESR_ELx_SYS64_ISS_CRM_SHIFT), \
249 (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \
250 ESR_ELx_SYS64_ISS_OP2_SHIFT))
252 #define esr_cp15_to_sysreg(e) \
254 (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \
255 ESR_ELx_SYS64_ISS_OP1_SHIFT), \
256 (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \
257 ESR_ELx_SYS64_ISS_CRN_SHIFT), \
258 (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \
259 ESR_ELx_SYS64_ISS_CRM_SHIFT), \
260 (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \
261 ESR_ELx_SYS64_ISS_OP2_SHIFT))
264 * ISS field definitions for floating-point exception traps
265 * (FP_EXC_32/FP_EXC_64).
267 * (The FPEXC_* constants are used instead for common bits.)
270 #define ESR_ELx_FP_EXC_TFV (UL(1) << 23)
273 * ISS field definitions for CP15 accesses
275 #define ESR_ELx_CP15_32_ISS_DIR_MASK 0x1
276 #define ESR_ELx_CP15_32_ISS_DIR_READ 0x1
277 #define ESR_ELx_CP15_32_ISS_DIR_WRITE 0x0
279 #define ESR_ELx_CP15_32_ISS_RT_SHIFT 5
280 #define ESR_ELx_CP15_32_ISS_RT_MASK (UL(0x1f) << ESR_ELx_CP15_32_ISS_RT_SHIFT)
281 #define ESR_ELx_CP15_32_ISS_CRM_SHIFT 1
282 #define ESR_ELx_CP15_32_ISS_CRM_MASK (UL(0xf) << ESR_ELx_CP15_32_ISS_CRM_SHIFT)
283 #define ESR_ELx_CP15_32_ISS_CRN_SHIFT 10
284 #define ESR_ELx_CP15_32_ISS_CRN_MASK (UL(0xf) << ESR_ELx_CP15_32_ISS_CRN_SHIFT)
285 #define ESR_ELx_CP15_32_ISS_OP1_SHIFT 14
286 #define ESR_ELx_CP15_32_ISS_OP1_MASK (UL(0x7) << ESR_ELx_CP15_32_ISS_OP1_SHIFT)
287 #define ESR_ELx_CP15_32_ISS_OP2_SHIFT 17
288 #define ESR_ELx_CP15_32_ISS_OP2_MASK (UL(0x7) << ESR_ELx_CP15_32_ISS_OP2_SHIFT)
290 #define ESR_ELx_CP15_32_ISS_SYS_MASK (ESR_ELx_CP15_32_ISS_OP1_MASK | \
291 ESR_ELx_CP15_32_ISS_OP2_MASK | \
292 ESR_ELx_CP15_32_ISS_CRN_MASK | \
293 ESR_ELx_CP15_32_ISS_CRM_MASK | \
294 ESR_ELx_CP15_32_ISS_DIR_MASK)
295 #define ESR_ELx_CP15_32_ISS_SYS_VAL(op1, op2, crn, crm) \
296 (((op1) << ESR_ELx_CP15_32_ISS_OP1_SHIFT) | \
297 ((op2) << ESR_ELx_CP15_32_ISS_OP2_SHIFT) | \
298 ((crn) << ESR_ELx_CP15_32_ISS_CRN_SHIFT) | \
299 ((crm) << ESR_ELx_CP15_32_ISS_CRM_SHIFT))
301 #define ESR_ELx_CP15_64_ISS_DIR_MASK 0x1
302 #define ESR_ELx_CP15_64_ISS_DIR_READ 0x1
303 #define ESR_ELx_CP15_64_ISS_DIR_WRITE 0x0
305 #define ESR_ELx_CP15_64_ISS_RT_SHIFT 5
306 #define ESR_ELx_CP15_64_ISS_RT_MASK (UL(0x1f) << ESR_ELx_CP15_64_ISS_RT_SHIFT)
308 #define ESR_ELx_CP15_64_ISS_RT2_SHIFT 10
309 #define ESR_ELx_CP15_64_ISS_RT2_MASK (UL(0x1f) << ESR_ELx_CP15_64_ISS_RT2_SHIFT)
311 #define ESR_ELx_CP15_64_ISS_OP1_SHIFT 16
312 #define ESR_ELx_CP15_64_ISS_OP1_MASK (UL(0xf) << ESR_ELx_CP15_64_ISS_OP1_SHIFT)
313 #define ESR_ELx_CP15_64_ISS_CRM_SHIFT 1
314 #define ESR_ELx_CP15_64_ISS_CRM_MASK (UL(0xf) << ESR_ELx_CP15_64_ISS_CRM_SHIFT)
316 #define ESR_ELx_CP15_64_ISS_SYS_VAL(op1, crm) \
317 (((op1) << ESR_ELx_CP15_64_ISS_OP1_SHIFT) | \
318 ((crm) << ESR_ELx_CP15_64_ISS_CRM_SHIFT))
320 #define ESR_ELx_CP15_64_ISS_SYS_MASK (ESR_ELx_CP15_64_ISS_OP1_MASK | \
321 ESR_ELx_CP15_64_ISS_CRM_MASK | \
322 ESR_ELx_CP15_64_ISS_DIR_MASK)
324 #define ESR_ELx_CP15_64_ISS_SYS_CNTVCT (ESR_ELx_CP15_64_ISS_SYS_VAL(1, 14) | \
325 ESR_ELx_CP15_64_ISS_DIR_READ)
327 #define ESR_ELx_CP15_32_ISS_SYS_CNTFRQ (ESR_ELx_CP15_32_ISS_SYS_VAL(0, 0, 14, 0) |\
328 ESR_ELx_CP15_32_ISS_DIR_READ)
331 #include <asm/types.h>
333 static inline bool esr_is_data_abort(u32 esr)
335 const u32 ec = ESR_ELx_EC(esr);
337 return ec == ESR_ELx_EC_DABT_LOW || ec == ESR_ELx_EC_DABT_CUR;
340 const char *esr_get_class_string(u32 esr);
341 #endif /* __ASSEMBLY */
343 #endif /* __ASM_ESR_H */