xref: /openbmc/linux/arch/arm64/include/asm/esr.h (revision 260ea95c)
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 /* Unallocated EC: 0x19 - 0x1E */
47 #define ESR_ELx_EC_IMP_DEF	(0x1f)
48 #define ESR_ELx_EC_IABT_LOW	(0x20)
49 #define ESR_ELx_EC_IABT_CUR	(0x21)
50 #define ESR_ELx_EC_PC_ALIGN	(0x22)
51 /* Unallocated EC: 0x23 */
52 #define ESR_ELx_EC_DABT_LOW	(0x24)
53 #define ESR_ELx_EC_DABT_CUR	(0x25)
54 #define ESR_ELx_EC_SP_ALIGN	(0x26)
55 /* Unallocated EC: 0x27 */
56 #define ESR_ELx_EC_FP_EXC32	(0x28)
57 /* Unallocated EC: 0x29 - 0x2B */
58 #define ESR_ELx_EC_FP_EXC64	(0x2C)
59 /* Unallocated EC: 0x2D - 0x2E */
60 #define ESR_ELx_EC_SERROR	(0x2F)
61 #define ESR_ELx_EC_BREAKPT_LOW	(0x30)
62 #define ESR_ELx_EC_BREAKPT_CUR	(0x31)
63 #define ESR_ELx_EC_SOFTSTP_LOW	(0x32)
64 #define ESR_ELx_EC_SOFTSTP_CUR	(0x33)
65 #define ESR_ELx_EC_WATCHPT_LOW	(0x34)
66 #define ESR_ELx_EC_WATCHPT_CUR	(0x35)
67 /* Unallocated EC: 0x36 - 0x37 */
68 #define ESR_ELx_EC_BKPT32	(0x38)
69 /* Unallocated EC: 0x39 */
70 #define ESR_ELx_EC_VECTOR32	(0x3A)
71 /* Unallocted EC: 0x3B */
72 #define ESR_ELx_EC_BRK64	(0x3C)
73 /* Unallocated EC: 0x3D - 0x3F */
74 #define ESR_ELx_EC_MAX		(0x3F)
75 
76 #define ESR_ELx_EC_SHIFT	(26)
77 #define ESR_ELx_EC_MASK		(UL(0x3F) << ESR_ELx_EC_SHIFT)
78 #define ESR_ELx_EC(esr)		(((esr) & ESR_ELx_EC_MASK) >> ESR_ELx_EC_SHIFT)
79 
80 #define ESR_ELx_IL		(UL(1) << 25)
81 #define ESR_ELx_ISS_MASK	(ESR_ELx_IL - 1)
82 
83 /* ISS field definitions shared by different classes */
84 #define ESR_ELx_WNR		(UL(1) << 6)
85 
86 /* Shared ISS field definitions for Data/Instruction aborts */
87 #define ESR_ELx_FnV		(UL(1) << 10)
88 #define ESR_ELx_EA		(UL(1) << 9)
89 #define ESR_ELx_S1PTW		(UL(1) << 7)
90 
91 /* Shared ISS fault status code(IFSC/DFSC) for Data/Instruction aborts */
92 #define ESR_ELx_FSC		(0x3F)
93 #define ESR_ELx_FSC_TYPE	(0x3C)
94 #define ESR_ELx_FSC_EXTABT	(0x10)
95 #define ESR_ELx_FSC_ACCESS	(0x08)
96 #define ESR_ELx_FSC_FAULT	(0x04)
97 #define ESR_ELx_FSC_PERM	(0x0C)
98 
99 /* ISS field definitions for Data Aborts */
100 #define ESR_ELx_ISV		(UL(1) << 24)
101 #define ESR_ELx_SAS_SHIFT	(22)
102 #define ESR_ELx_SAS		(UL(3) << ESR_ELx_SAS_SHIFT)
103 #define ESR_ELx_SSE		(UL(1) << 21)
104 #define ESR_ELx_SRT_SHIFT	(16)
105 #define ESR_ELx_SRT_MASK	(UL(0x1F) << ESR_ELx_SRT_SHIFT)
106 #define ESR_ELx_SF 		(UL(1) << 15)
107 #define ESR_ELx_AR 		(UL(1) << 14)
108 #define ESR_ELx_CM 		(UL(1) << 8)
109 
110 /* ISS field definitions for exceptions taken in to Hyp */
111 #define ESR_ELx_CV		(UL(1) << 24)
112 #define ESR_ELx_COND_SHIFT	(20)
113 #define ESR_ELx_COND_MASK	(UL(0xF) << ESR_ELx_COND_SHIFT)
114 #define ESR_ELx_WFx_ISS_WFE	(UL(1) << 0)
115 #define ESR_ELx_xVC_IMM_MASK	((1UL << 16) - 1)
116 
117 /* ESR value templates for specific events */
118 
119 /* BRK instruction trap from AArch64 state */
120 #define ESR_ELx_VAL_BRK64(imm)					\
121 	((ESR_ELx_EC_BRK64 << ESR_ELx_EC_SHIFT) | ESR_ELx_IL |	\
122 	 ((imm) & 0xffff))
123 
124 /* ISS field definitions for System instruction traps */
125 #define ESR_ELx_SYS64_ISS_RES0_SHIFT	22
126 #define ESR_ELx_SYS64_ISS_RES0_MASK	(UL(0x7) << ESR_ELx_SYS64_ISS_RES0_SHIFT)
127 #define ESR_ELx_SYS64_ISS_DIR_MASK	0x1
128 #define ESR_ELx_SYS64_ISS_DIR_READ	0x1
129 #define ESR_ELx_SYS64_ISS_DIR_WRITE	0x0
130 
131 #define ESR_ELx_SYS64_ISS_RT_SHIFT	5
132 #define ESR_ELx_SYS64_ISS_RT_MASK	(UL(0x1f) << ESR_ELx_SYS64_ISS_RT_SHIFT)
133 #define ESR_ELx_SYS64_ISS_CRM_SHIFT	1
134 #define ESR_ELx_SYS64_ISS_CRM_MASK	(UL(0xf) << ESR_ELx_SYS64_ISS_CRM_SHIFT)
135 #define ESR_ELx_SYS64_ISS_CRN_SHIFT	10
136 #define ESR_ELx_SYS64_ISS_CRN_MASK	(UL(0xf) << ESR_ELx_SYS64_ISS_CRN_SHIFT)
137 #define ESR_ELx_SYS64_ISS_OP1_SHIFT	14
138 #define ESR_ELx_SYS64_ISS_OP1_MASK	(UL(0x7) << ESR_ELx_SYS64_ISS_OP1_SHIFT)
139 #define ESR_ELx_SYS64_ISS_OP2_SHIFT	17
140 #define ESR_ELx_SYS64_ISS_OP2_MASK	(UL(0x7) << ESR_ELx_SYS64_ISS_OP2_SHIFT)
141 #define ESR_ELx_SYS64_ISS_OP0_SHIFT	20
142 #define ESR_ELx_SYS64_ISS_OP0_MASK	(UL(0x3) << ESR_ELx_SYS64_ISS_OP0_SHIFT)
143 #define ESR_ELx_SYS64_ISS_SYS_MASK	(ESR_ELx_SYS64_ISS_OP0_MASK | \
144 					 ESR_ELx_SYS64_ISS_OP1_MASK | \
145 					 ESR_ELx_SYS64_ISS_OP2_MASK | \
146 					 ESR_ELx_SYS64_ISS_CRN_MASK | \
147 					 ESR_ELx_SYS64_ISS_CRM_MASK)
148 #define ESR_ELx_SYS64_ISS_SYS_VAL(op0, op1, op2, crn, crm) \
149 					(((op0) << ESR_ELx_SYS64_ISS_OP0_SHIFT) | \
150 					 ((op1) << ESR_ELx_SYS64_ISS_OP1_SHIFT) | \
151 					 ((op2) << ESR_ELx_SYS64_ISS_OP2_SHIFT) | \
152 					 ((crn) << ESR_ELx_SYS64_ISS_CRN_SHIFT) | \
153 					 ((crm) << ESR_ELx_SYS64_ISS_CRM_SHIFT))
154 
155 #define ESR_ELx_SYS64_ISS_SYS_OP_MASK	(ESR_ELx_SYS64_ISS_SYS_MASK | \
156 					 ESR_ELx_SYS64_ISS_DIR_MASK)
157 /*
158  * User space cache operations have the following sysreg encoding
159  * in System instructions.
160  * op0=1, op1=3, op2=1, crn=7, crm={ 5, 10, 11, 14 }, WRITE (L=0)
161  */
162 #define ESR_ELx_SYS64_ISS_CRM_DC_CIVAC	14
163 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAU	11
164 #define ESR_ELx_SYS64_ISS_CRM_DC_CVAC	10
165 #define ESR_ELx_SYS64_ISS_CRM_IC_IVAU	5
166 
167 #define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_MASK	(ESR_ELx_SYS64_ISS_OP0_MASK | \
168 						 ESR_ELx_SYS64_ISS_OP1_MASK | \
169 						 ESR_ELx_SYS64_ISS_OP2_MASK | \
170 						 ESR_ELx_SYS64_ISS_CRN_MASK | \
171 						 ESR_ELx_SYS64_ISS_DIR_MASK)
172 #define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_VAL \
173 				(ESR_ELx_SYS64_ISS_SYS_VAL(1, 3, 1, 7, 0) | \
174 				 ESR_ELx_SYS64_ISS_DIR_WRITE)
175 
176 #define ESR_ELx_SYS64_ISS_SYS_CTR	ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 1, 0, 0)
177 #define ESR_ELx_SYS64_ISS_SYS_CTR_READ	(ESR_ELx_SYS64_ISS_SYS_CTR | \
178 					 ESR_ELx_SYS64_ISS_DIR_READ)
179 
180 #define ESR_ELx_SYS64_ISS_SYS_CNTVCT	(ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 2, 14, 0) | \
181 					 ESR_ELx_SYS64_ISS_DIR_READ)
182 
183 #define ESR_ELx_SYS64_ISS_SYS_CNTFRQ	(ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 0, 14, 0) | \
184 					 ESR_ELx_SYS64_ISS_DIR_READ)
185 
186 #define esr_sys64_to_sysreg(e)					\
187 	sys_reg((((e) & ESR_ELx_SYS64_ISS_OP0_MASK) >>		\
188 		 ESR_ELx_SYS64_ISS_OP0_SHIFT),			\
189 		(((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >>		\
190 		 ESR_ELx_SYS64_ISS_OP1_SHIFT),			\
191 		(((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >>		\
192 		 ESR_ELx_SYS64_ISS_CRN_SHIFT),			\
193 		(((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >>		\
194 		 ESR_ELx_SYS64_ISS_CRM_SHIFT),			\
195 		(((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >>		\
196 		 ESR_ELx_SYS64_ISS_OP2_SHIFT))
197 
198 #define esr_cp15_to_sysreg(e)					\
199 	sys_reg(3,						\
200 		(((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >>		\
201 		 ESR_ELx_SYS64_ISS_OP1_SHIFT),			\
202 		(((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >>		\
203 		 ESR_ELx_SYS64_ISS_CRN_SHIFT),			\
204 		(((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >>		\
205 		 ESR_ELx_SYS64_ISS_CRM_SHIFT),			\
206 		(((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >>		\
207 		 ESR_ELx_SYS64_ISS_OP2_SHIFT))
208 
209 #ifndef __ASSEMBLY__
210 #include <asm/types.h>
211 
212 const char *esr_get_class_string(u32 esr);
213 #endif /* __ASSEMBLY */
214 
215 #endif /* __ASM_ESR_H */
216