tests/qtest/pnv-xscom.h

   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    = 0x120da04900008000ull,
  60         .first_core = 0x0,
  61         .num_i2c    = 4,
  62     },
  63 };
  64
  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 */