xref: /openbmc/qemu/tests/qtest/pnv-xscom.h (revision 977e789c)
1 /*
2  * PowerNV XSCOM Bus
3  *
4  * Copyright (c) 2024, IBM Corporation.
5  *
6  * SPDX-License-Identifier: GPL-2.0-or-later
7  */
8 
9 #ifndef PNV_XSCOM_H
10 #define PNV_XSCOM_H
11 
12 #define SMT                     4 /* some tests will break if less than 4 */
13 
14 typedef enum PnvChipType {
15     PNV_CHIP_POWER8E,     /* AKA Murano (default) */
16     PNV_CHIP_POWER8,      /* AKA Venice */
17     PNV_CHIP_POWER8NVL,   /* AKA Naples */
18     PNV_CHIP_POWER9,      /* AKA Nimbus */
19     PNV_CHIP_POWER10,
20 } PnvChipType;
21 
22 typedef struct PnvChip {
23     PnvChipType chip_type;
24     const char *cpu_model;
25     uint64_t    xscom_base;
26     uint64_t    cfam_id;
27     uint32_t    first_core;
28     uint32_t    num_i2c;
29 } PnvChip;
30 
31 static const PnvChip pnv_chips[] = {
32     {
33         .chip_type  = PNV_CHIP_POWER8,
34         .cpu_model  = "POWER8",
35         .xscom_base = 0x0003fc0000000000ull,
36         .cfam_id    = 0x220ea04980000000ull,
37         .first_core = 0x1,
38         .num_i2c    = 0,
39     }, {
40         .chip_type  = PNV_CHIP_POWER8NVL,
41         .cpu_model  = "POWER8NVL",
42         .xscom_base = 0x0003fc0000000000ull,
43         .cfam_id    = 0x120d304980000000ull,
44         .first_core = 0x1,
45         .num_i2c    = 0,
46     },
47     {
48         .chip_type  = PNV_CHIP_POWER9,
49         .cpu_model  = "POWER9",
50         .xscom_base = 0x000603fc00000000ull,
51         .cfam_id    = 0x220d104900008000ull,
52         .first_core = 0x0,
53         .num_i2c    = 4,
54     },
55     {
56         .chip_type  = PNV_CHIP_POWER10,
57         .cpu_model  = "POWER10",
58         .xscom_base = 0x000603fc00000000ull,
59         .cfam_id    = 0x220da04980000000ull,
60         .first_core = 0x0,
61         .num_i2c    = 4,
62     },
63 };
64 
pnv_xscom_addr(const PnvChip * chip,uint32_t pcba)65 static inline uint64_t pnv_xscom_addr(const PnvChip *chip, uint32_t pcba)
66 {
67     uint64_t addr = chip->xscom_base;
68 
69     if (chip->chip_type == PNV_CHIP_POWER10) {
70         addr |= ((uint64_t) pcba << 3);
71     } else if (chip->chip_type == PNV_CHIP_POWER9) {
72         addr |= ((uint64_t) pcba << 3);
73     } else {
74         addr |= (((uint64_t) pcba << 4) & ~0xffull) |
75             (((uint64_t) pcba << 3) & 0x78);
76     }
77     return addr;
78 }
79 
80 #endif /* PNV_XSCOM_H */
81