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 int chan_mmio_sz; /* for i10nm CPU */ 63 u8 mc; /* system wide mc# */ 64 u8 lmc; /* socket relative mc# */ 65 u8 src_id, node_id; 66 struct skx_channel { 67 struct pci_dev *cdev; 68 struct pci_dev *edev; 69 struct skx_dimm { 70 u8 close_pg; 71 u8 bank_xor_enable; 72 u8 fine_grain_bank; 73 u8 rowbits; 74 u8 colbits; 75 } dimms[NUM_DIMMS]; 76 } chan[NUM_CHANNELS]; 77 } imc[NUM_IMC]; 78 }; 79 80 struct skx_pvt { 81 struct skx_imc *imc; 82 }; 83 84 enum type { 85 SKX, 86 I10NM, 87 SPR 88 }; 89 90 enum { 91 INDEX_SOCKET, 92 INDEX_MEMCTRL, 93 INDEX_CHANNEL, 94 INDEX_DIMM, 95 INDEX_MAX 96 }; 97 98 struct decoded_addr { 99 struct skx_dev *dev; 100 u64 addr; 101 int socket; 102 int imc; 103 int channel; 104 u64 chan_addr; 105 int sktways; 106 int chanways; 107 int dimm; 108 int rank; 109 int channel_rank; 110 u64 rank_address; 111 int row; 112 int column; 113 int bank_address; 114 int bank_group; 115 }; 116 117 struct res_config { 118 enum type type; 119 /* Configuration agent device ID */ 120 unsigned int decs_did; 121 /* Default bus number configuration register offset */ 122 int busno_cfg_offset; 123 /* Per DDR channel memory-mapped I/O size */ 124 int ddr_chan_mmio_sz; 125 bool support_ddr5; 126 }; 127 128 typedef int (*get_dimm_config_f)(struct mem_ctl_info *mci, 129 struct res_config *cfg); 130 typedef bool (*skx_decode_f)(struct decoded_addr *res); 131 typedef void (*skx_show_retry_log_f)(struct decoded_addr *res, char *msg, int len); 132 133 int __init skx_adxl_get(void); 134 void __exit skx_adxl_put(void); 135 void skx_set_decode(skx_decode_f decode, skx_show_retry_log_f show_retry_log); 136 137 int skx_get_src_id(struct skx_dev *d, int off, u8 *id); 138 int skx_get_node_id(struct skx_dev *d, u8 *id); 139 140 int skx_get_all_bus_mappings(struct res_config *cfg, struct list_head **list); 141 142 int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm); 143 144 int skx_get_dimm_info(u32 mtr, u32 mcmtr, u32 amap, struct dimm_info *dimm, 145 struct skx_imc *imc, int chan, int dimmno, 146 struct res_config *cfg); 147 148 int skx_get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc, 149 int chan, int dimmno, const char *mod_str); 150 151 int skx_register_mci(struct skx_imc *imc, struct pci_dev *pdev, 152 const char *ctl_name, const char *mod_str, 153 get_dimm_config_f get_dimm_config, 154 struct res_config *cfg); 155 156 int skx_mce_check_error(struct notifier_block *nb, unsigned long val, 157 void *data); 158 159 void skx_remove(void); 160 161 #endif /* _SKX_COMM_EDAC_H */ 162