tjh.dev
Linux kernel mirror (for testing)
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linux
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 */
50struct 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
80struct skx_pvt {
81 struct skx_imc *imc;
82};
83
84enum type {
85 SKX,
86 I10NM,
87 SPR
88};
89
90enum {
91 INDEX_SOCKET,
92 INDEX_MEMCTRL,
93 INDEX_CHANNEL,
94 INDEX_DIMM,
95 INDEX_MAX
96};
97
98struct 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
117struct 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
128typedef int (*get_dimm_config_f)(struct mem_ctl_info *mci,
129 struct res_config *cfg);
130typedef bool (*skx_decode_f)(struct decoded_addr *res);
131typedef void (*skx_show_retry_log_f)(struct decoded_addr *res, char *msg, int len);
132
133int __init skx_adxl_get(void);
134void __exit skx_adxl_put(void);
135void skx_set_decode(skx_decode_f decode, skx_show_retry_log_f show_retry_log);
136
137int skx_get_src_id(struct skx_dev *d, int off, u8 *id);
138int skx_get_node_id(struct skx_dev *d, u8 *id);
139
140int skx_get_all_bus_mappings(struct res_config *cfg, struct list_head **list);
141
142int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm);
143
144int 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
148int skx_get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc,
149 int chan, int dimmno, const char *mod_str);
150
151int 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
156int skx_mce_check_error(struct notifier_block *nb, unsigned long val,
157 void *data);
158
159void skx_remove(void);
160
161#endif /* _SKX_COMM_EDAC_H */