diff options
Diffstat (limited to 'drivers/edac/skx_common.h')
| -rw-r--r-- | drivers/edac/skx_common.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/edac/skx_common.h b/drivers/edac/skx_common.h new file mode 100644 index 000000000000..d25374e34d4f --- /dev/null +++ b/drivers/edac/skx_common.h @@ -0,0 +1,152 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Common codes for both the skx_edac driver and Intel 10nm server EDAC driver. + * Originally split out from the skx_edac driver. + * + * Copyright (c) 2018, Intel Corporation. + */ + +#ifndef _SKX_COMM_EDAC_H +#define _SKX_COMM_EDAC_H + +#define MSG_SIZE 1024 + +/* + * Debug macros + */ +#define skx_printk(level, fmt, arg...) \ + edac_printk(level, "skx", fmt, ##arg) + +#define skx_mc_printk(mci, level, fmt, arg...) \ + edac_mc_chipset_printk(mci, level, "skx", fmt, ##arg) + +/* + * Get a bit field at register value <v>, from bit <lo> to bit <hi> + */ +#define GET_BITFIELD(v, lo, hi) \ + (((v) & GENMASK_ULL((hi), (lo))) >> (lo)) + +#define SKX_NUM_IMC 2 /* Memory controllers per socket */ +#define SKX_NUM_CHANNELS 3 /* Channels per memory controller */ +#define SKX_NUM_DIMMS 2 /* Max DIMMS per channel */ + +#define I10NM_NUM_IMC 4 +#define I10NM_NUM_CHANNELS 2 +#define I10NM_NUM_DIMMS 2 + +#define MAX(a, b) ((a) > (b) ? (a) : (b)) +#define NUM_IMC MAX(SKX_NUM_IMC, I10NM_NUM_IMC) +#define NUM_CHANNELS MAX(SKX_NUM_CHANNELS, I10NM_NUM_CHANNELS) +#define NUM_DIMMS MAX(SKX_NUM_DIMMS, I10NM_NUM_DIMMS) + +#define IS_DIMM_PRESENT(r) GET_BITFIELD(r, 15, 15) +#define IS_NVDIMM_PRESENT(r, i) GET_BITFIELD(r, i, i) + +/* + * Each cpu socket contains some pci devices that provide global + * information, and also some that are local to each of the two + * memory controllers on the die. + */ +struct skx_dev { + struct list_head list; + u8 bus[4]; + int seg; + struct pci_dev *sad_all; + struct pci_dev *util_all; + struct pci_dev *uracu; /* for i10nm CPU */ + u32 mcroute; + struct skx_imc { + struct mem_ctl_info *mci; + struct pci_dev *mdev; /* for i10nm CPU */ + void __iomem *mbase; /* for i10nm CPU */ + u8 mc; /* system wide mc# */ + u8 lmc; /* socket relative mc# */ + u8 src_id, node_id; + struct skx_channel { + struct pci_dev *cdev; + struct skx_dimm { + u8 close_pg; + u8 bank_xor_enable; + u8 fine_grain_bank; + u8 rowbits; + u8 colbits; + } dimms[NUM_DIMMS]; + } chan[NUM_CHANNELS]; + } imc[NUM_IMC]; +}; + +struct skx_pvt { + struct skx_imc *imc; +}; + +enum type { + SKX, + I10NM +}; + +enum { + INDEX_SOCKET, + INDEX_MEMCTRL, + INDEX_CHANNEL, + INDEX_DIMM, + INDEX_MAX +}; + +struct decoded_addr { + struct skx_dev *dev; + u64 addr; + int socket; + int imc; + int channel; + u64 chan_addr; + int sktways; + int chanways; + int dimm; + int rank; + int channel_rank; + u64 rank_address; + int row; + int column; + int bank_address; + int bank_group; +}; + +typedef int (*get_dimm_config_f)(struct mem_ctl_info *mci); +typedef bool (*skx_decode_f)(struct decoded_addr *res); + +int __init skx_adxl_get(void); +void __exit skx_adxl_put(void); +void skx_set_decode(skx_decode_f decode); + +int skx_get_src_id(struct skx_dev *d, u8 *id); +int skx_get_node_id(struct skx_dev *d, u8 *id); + +int skx_get_all_bus_mappings(unsigned int did, int off, enum type, + struct list_head **list); + +int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm); + +int skx_get_dimm_info(u32 mtr, u32 amap, struct dimm_info *dimm, + struct skx_imc *imc, int chan, int dimmno); + +int skx_get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc, + int chan, int dimmno, const char *mod_str); + +int skx_register_mci(struct skx_imc *imc, struct pci_dev *pdev, + const char *ctl_name, const char *mod_str, + get_dimm_config_f get_dimm_config); + +int skx_mce_check_error(struct notifier_block *nb, unsigned long val, + void *data); + +void skx_remove(void); + +#ifdef CONFIG_EDAC_DEBUG +void setup_skx_debug(const char *dirname); +void teardown_skx_debug(void); +#else +static inline void setup_skx_debug(const char *dirname) {} +static inline void teardown_skx_debug(void) {} +#endif /*CONFIG_EDAC_DEBUG*/ + +#endif /* _SKX_COMM_EDAC_H */ |