drivers/edac/skx_common.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Common codes for both the skx_edac driver and Intel 10nm server EDAC driver.
   4  * Originally split out from the skx_edac driver.
   5  *
   6  * Copyright (c) 2018, Intel Corporation.
   7  */
   8
   9 #ifndef _SKX_COMM_EDAC_H
  10 #define _SKX_COMM_EDAC_H
  11
  12 #define MSG_SIZE                1024
  13
  14 /*
  15  * Debug macros
  16  */
  17 #define skx_printk(level, fmt, arg...)                  \
  18         edac_printk(level, "skx", fmt, ##arg)
  19
  20 #define skx_mc_printk(mci, level, fmt, arg...)          \
  21         edac_mc_chipset_printk(mci, level, "skx", fmt, ##arg)
  22
  23 /*
  24  * Get a bit field at register value <v>, from bit <lo> to bit <hi>
  25  */
  26 #define GET_BITFIELD(v, lo, hi) \
  27         (((v) & GENMASK_ULL((hi), (lo))) >> (lo))
  28
  29 #define SKX_NUM_IMC             2       /* Memory controllers per socket */
  30 #define SKX_NUM_CHANNELS        3       /* Channels per memory controller */
  31 #define SKX_NUM_DIMMS           2       /* Max DIMMS per channel */
  32
  33 #define I10NM_NUM_IMC           4
  34 #define I10NM_NUM_CHANNELS      2
  35 #define I10NM_NUM_DIMMS         2
  36
  37 #define MAX(a, b)       ((a) > (b) ? (a) : (b))
  38 #define NUM_IMC         MAX(SKX_NUM_IMC, I10NM_NUM_IMC)
  39 #define NUM_CHANNELS    MAX(SKX_NUM_CHANNELS, I10NM_NUM_CHANNELS)
  40 #define NUM_DIMMS       MAX(SKX_NUM_DIMMS, I10NM_NUM_DIMMS)
  41
  42 #define IS_DIMM_PRESENT(r)              GET_BITFIELD(r, 15, 15)
  43 #define IS_NVDIMM_PRESENT(r, i)         GET_BITFIELD(r, i, i)
  44
  45 /*
  46  * Each cpu socket contains some pci devices that provide global
  47  * information, and also some that are local to each of the two
  48  * memory controllers on the die.
  49  */
  50 struct skx_dev {
  51         struct list_head list;
  52         u8 bus[4];
  53         int seg;
  54         struct pci_dev *sad_all;
  55         struct pci_dev *util_all;
  56         struct pci_dev *uracu; /* for i10nm CPU */
  57         u32 mcroute;
  58         struct skx_imc {
  59                 struct mem_ctl_info *mci;
  60                 struct pci_dev *mdev; /* for i10nm CPU */
  61                 void __iomem *mbase;  /* for i10nm CPU */
  62                 u8 mc;  /* system wide mc# */
  63                 u8 lmc; /* socket relative mc# */
  64                 u8 src_id, node_id;
  65                 struct skx_channel {
  66                         struct pci_dev  *cdev;
  67                         struct skx_dimm {
  68                                 u8 close_pg;
  69                                 u8 bank_xor_enable;
  70                                 u8 fine_grain_bank;
  71                                 u8 rowbits;
  72                                 u8 colbits;
  73                         } dimms[NUM_DIMMS];
  74                 } chan[NUM_CHANNELS];
  75         } imc[NUM_IMC];
  76 };
  77
  78 struct skx_pvt {
  79         struct skx_imc  *imc;
  80 };
  81
  82 enum type {
  83         SKX,
  84         I10NM
  85 };
  86
  87 enum {
  88         INDEX_SOCKET,
  89         INDEX_MEMCTRL,
  90         INDEX_CHANNEL,
  91         INDEX_DIMM,
  92         INDEX_MAX
  93 };
  94
  95 struct decoded_addr {
  96         struct skx_dev *dev;
  97         u64     addr;
  98         int     socket;
  99         int     imc;
 100         int     channel;
 101         u64     chan_addr;
 102         int     sktways;
 103         int     chanways;
 104         int     dimm;
 105         int     rank;
 106         int     channel_rank;
 107         u64     rank_address;
 108         int     row;
 109         int     column;
 110         int     bank_address;
 111         int     bank_group;
 112 };
 113
 114 typedef int (*get_dimm_config_f)(struct mem_ctl_info *mci);
 115 typedef bool (*skx_decode_f)(struct decoded_addr *res);
 116
 117 int __init skx_adxl_get(void);
 118 void __exit skx_adxl_put(void);
 119 void skx_set_decode(skx_decode_f decode);
 120
 121 int skx_get_src_id(struct skx_dev *d, u8 *id);
 122 int skx_get_node_id(struct skx_dev *d, u8 *id);
 123
 124 int skx_get_all_bus_mappings(unsigned int did, int off, enum type,
 125                              struct list_head **list);
 126
 127 int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm);
 128
 129 int skx_get_dimm_info(u32 mtr, u32 amap, struct dimm_info *dimm,
 130                       struct skx_imc *imc, int chan, int dimmno);
 131
 132 int skx_get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc,
 133                         int chan, int dimmno, const char *mod_str);
 134
 135 int skx_register_mci(struct skx_imc *imc, struct pci_dev *pdev,
 136                      const char *ctl_name, const char *mod_str,
 137                      get_dimm_config_f get_dimm_config);
 138
 139 int skx_mce_check_error(struct notifier_block *nb, unsigned long val,
 140                         void *data);
 141
 142 void skx_remove(void);
 143
 144 #endif /* _SKX_COMM_EDAC_H */