1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2
3 #ifndef CPU_PPC64_SPR_H
4 #define CPU_PPC64_SPR_H
5
6 #include <arch/byteorder.h> // PPC_BIT()
7
8 #define SPR_TB 0x10C
9
10 #define SPR_PVR 0x11F
11 #define SPR_PVR_REV_MASK (PPC_BITMASK(52, 55) | PPC_BITMASK(60, 63))
12 #define SPR_PVR_REV(maj, min) (PPC_SHIFT((maj), 55) | PPC_SHIFT((min), 63))
13
14 #define SPR_HSPRG0 0x130
15 #define SPR_HSPRG1 0x131
16
17 #define SPR_HRMOR 0x139
18
19 #define SPR_HMER 0x150
20 /* Bits in HMER/HMEER */
21 #define SPR_HMER_MALFUNCTION_ALERT PPC_BIT(0)
22 #define SPR_HMER_PROC_RECV_DONE PPC_BIT(2)
23 #define SPR_HMER_PROC_RECV_ERROR_MASKED PPC_BIT(3)
24 #define SPR_HMER_TFAC_ERROR PPC_BIT(4)
25 #define SPR_HMER_TFMR_PARITY_ERROR PPC_BIT(5)
26 #define SPR_HMER_XSCOM_FAIL PPC_BIT(8)
27 #define SPR_HMER_XSCOM_DONE PPC_BIT(9)
28 #define SPR_HMER_PROC_RECV_AGAIN PPC_BIT(11)
29 #define SPR_HMER_WARN_RISE PPC_BIT(14)
30 #define SPR_HMER_WARN_FALL PPC_BIT(15)
31 #define SPR_HMER_SCOM_FIR_HMI PPC_BIT(16)
32 #define SPR_HMER_TRIG_FIR_HMI PPC_BIT(17)
33 #define SPR_HMER_HYP_RESOURCE_ERR PPC_BIT(20)
34 #define SPR_HMER_XSCOM_STATUS PPC_BITMASK(21, 23)
35 #define SPR_HMER_XSCOM_OCCUPIED PPC_BIT(23)
36
37 #ifndef __ASSEMBLER__
38 #include <types.h>
39
read_spr(int spr)40 static inline uint64_t read_spr(int spr)
41 {
42 uint64_t val;
43 asm volatile("mfspr %0,%1" : "=r"(val) : "i"(spr) : "memory");
44 return val;
45 }
46
write_spr(int spr,uint64_t val)47 static inline void write_spr(int spr, uint64_t val)
48 {
49 asm volatile("mtspr %0, %1" :: "i"(spr), "r"(val) : "memory");
50 }
51
read_hmer(void)52 static inline uint64_t read_hmer(void)
53 {
54 return read_spr(SPR_HMER);
55 }
56
clear_hmer(void)57 static inline void clear_hmer(void)
58 {
59 write_spr(SPR_HMER, 0);
60 }
61
read_msr(void)62 static inline uint64_t read_msr(void)
63 {
64 uint64_t val;
65 asm volatile("mfmsr %0" : "=r"(val) :: "memory");
66 return val;
67 }
68
pvr_revision(void)69 static inline uint64_t pvr_revision(void)
70 {
71 return read_spr(SPR_PVR) & SPR_PVR_REV_MASK;
72 }
73
74 #endif /* __ASSEMBLER__ */
75 #endif /* CPU_PPC64_SPR_H */
76