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 #include <linux/bits.h>
13 #include <asm/mce.h>
14
15 #define MSG_SIZE 1024
16
17 /*
18 * Debug macros
19 */
20 #define skx_printk(level, fmt, arg...) \
21 edac_printk(level, "skx", fmt, ##arg)
22
23 #define skx_mc_printk(mci, level, fmt, arg...) \
24 edac_mc_chipset_printk(mci, level, "skx", fmt, ##arg)
25
26 /*
27 * Get a bit field at register value <v>, from bit <lo> to bit <hi>
28 */
29 #define GET_BITFIELD(v, lo, hi) \
30 (((v) & GENMASK_ULL((hi), (lo))) >> (lo))
31
32 #define SKX_NUM_IMC 2 /* Memory controllers per socket */
33 #define SKX_NUM_CHANNELS 3 /* Channels per memory controller */
34 #define SKX_NUM_DIMMS 2 /* Max DIMMS per channel */
35
36 #define I10NM_NUM_DDR_IMC 12
37 #define I10NM_NUM_DDR_CHANNELS 2
38 #define I10NM_NUM_DDR_DIMMS 2
39
40 #define I10NM_NUM_HBM_IMC 16
41 #define I10NM_NUM_HBM_CHANNELS 2
42 #define I10NM_NUM_HBM_DIMMS 1
43
44 #define I10NM_NUM_IMC (I10NM_NUM_DDR_IMC + I10NM_NUM_HBM_IMC)
45 #define I10NM_NUM_CHANNELS MAX(I10NM_NUM_DDR_CHANNELS, I10NM_NUM_HBM_CHANNELS)
46 #define I10NM_NUM_DIMMS MAX(I10NM_NUM_DDR_DIMMS, I10NM_NUM_HBM_DIMMS)
47
48 #define NUM_IMC MAX(SKX_NUM_IMC, I10NM_NUM_IMC)
49 #define NUM_CHANNELS MAX(SKX_NUM_CHANNELS, I10NM_NUM_CHANNELS)
50 #define NUM_DIMMS MAX(SKX_NUM_DIMMS, I10NM_NUM_DIMMS)
51
52 #define IS_DIMM_PRESENT(r) GET_BITFIELD(r, 15, 15)
53 #define IS_NVDIMM_PRESENT(r, i) GET_BITFIELD(r, i, i)
54
55 #define MCI_MISC_ECC_MODE(m) (((m) >> 59) & 15)
56 #define MCI_MISC_ECC_DDRT 8 /* read from DDRT */
57
58 /*
59 * According to Intel Architecture spec vol 3B,
60 * Table 15-10 "IA32_MCi_Status [15:0] Compound Error Code Encoding"
61 * memory errors should fit one of these masks:
62 * 000f 0000 1mmm cccc (binary)
63 * 000f 0010 1mmm cccc (binary) [RAM used as cache]
64 * where:
65 * f = Correction Report Filtering Bit. If 1, subsequent errors
66 * won't be shown
67 * mmm = error type
68 * cccc = channel
69 */
70 #define MCACOD_MEM_ERR_MASK 0xef80
71 /*
72 * Errors from either the memory of the 1-level memory system or the
73 * 2nd level memory (the slow "far" memory) of the 2-level memory system.
74 */
75 #define MCACOD_MEM_CTL_ERR 0x80
76 /*
77 * Errors from the 1st level memory (the fast "near" memory as cache)
78 * of the 2-level memory system.
79 */
80 #define MCACOD_EXT_MEM_ERR 0x280
81
82 /*
83 * Each cpu socket contains some pci devices that provide global
84 * information, and also some that are local to each of the two
85 * memory controllers on the die.
86 */
87 struct skx_dev {
88 struct list_head list;
89 u8 bus[4];
90 int seg;
91 struct pci_dev *sad_all;
92 struct pci_dev *util_all;
93 struct pci_dev *uracu; /* for i10nm CPU */
94 struct pci_dev *pcu_cr3; /* for HBM memory detection */
95 u32 mcroute;
96 struct skx_imc {
97 struct mem_ctl_info *mci;
98 struct pci_dev *mdev; /* for i10nm CPU */
99 void __iomem *mbase; /* for i10nm CPU */
100 int chan_mmio_sz; /* for i10nm CPU */
101 int num_channels; /* channels per memory controller */
102 int num_dimms; /* dimms per channel */
103 bool hbm_mc;
104 u8 mc; /* system wide mc# */
105 u8 lmc; /* socket relative mc# */
106 u8 src_id, node_id;
107 struct skx_channel {
108 struct pci_dev *cdev;
109 struct pci_dev *edev;
110 u32 retry_rd_err_log_s;
111 u32 retry_rd_err_log_d;
112 u32 retry_rd_err_log_d2;
113 struct skx_dimm {
114 u8 close_pg;
115 u8 bank_xor_enable;
116 u8 fine_grain_bank;
117 u8 rowbits;
118 u8 colbits;
119 } dimms[NUM_DIMMS];
120 } chan[NUM_CHANNELS];
121 } imc[NUM_IMC];
122 };
123
124 struct skx_pvt {
125 struct skx_imc *imc;
126 };
127
128 enum type {
129 SKX,
130 I10NM,
131 SPR,
132 GNR
133 };
134
135 enum {
136 INDEX_SOCKET,
137 INDEX_MEMCTRL,
138 INDEX_CHANNEL,
139 INDEX_DIMM,
140 INDEX_CS,
141 INDEX_NM_FIRST,
142 INDEX_NM_MEMCTRL = INDEX_NM_FIRST,
143 INDEX_NM_CHANNEL,
144 INDEX_NM_DIMM,
145 INDEX_NM_CS,
146 INDEX_MAX
147 };
148
149 #define BIT_NM_MEMCTRL BIT_ULL(INDEX_NM_MEMCTRL)
150 #define BIT_NM_CHANNEL BIT_ULL(INDEX_NM_CHANNEL)
151 #define BIT_NM_DIMM BIT_ULL(INDEX_NM_DIMM)
152 #define BIT_NM_CS BIT_ULL(INDEX_NM_CS)
153
154 struct decoded_addr {
155 struct mce *mce;
156 struct skx_dev *dev;
157 u64 addr;
158 int socket;
159 int imc;
160 int channel;
161 u64 chan_addr;
162 int sktways;
163 int chanways;
164 int dimm;
165 int cs;
166 int rank;
167 int channel_rank;
168 u64 rank_address;
169 int row;
170 int column;
171 int bank_address;
172 int bank_group;
173 bool decoded_by_adxl;
174 };
175
176 struct pci_bdf {
177 u32 bus : 8;
178 u32 dev : 5;
179 u32 fun : 3;
180 };
181
182 struct res_config {
183 enum type type;
184 /* Configuration agent device ID */
185 unsigned int decs_did;
186 /* Default bus number configuration register offset */
187 int busno_cfg_offset;
188 /* DDR memory controllers per socket */
189 int ddr_imc_num;
190 /* DDR channels per DDR memory controller */
191 int ddr_chan_num;
192 /* DDR DIMMs per DDR memory channel */
193 int ddr_dimm_num;
194 /* Per DDR channel memory-mapped I/O size */
195 int ddr_chan_mmio_sz;
196 /* HBM memory controllers per socket */
197 int hbm_imc_num;
198 /* HBM channels per HBM memory controller */
199 int hbm_chan_num;
200 /* HBM DIMMs per HBM memory channel */
201 int hbm_dimm_num;
202 /* Per HBM channel memory-mapped I/O size */
203 int hbm_chan_mmio_sz;
204 bool support_ddr5;
205 /* SAD device BDF */
206 struct pci_bdf sad_all_bdf;
207 /* PCU device BDF */
208 struct pci_bdf pcu_cr3_bdf;
209 /* UTIL device BDF */
210 struct pci_bdf util_all_bdf;
211 /* URACU device BDF */
212 struct pci_bdf uracu_bdf;
213 /* DDR mdev device BDF */
214 struct pci_bdf ddr_mdev_bdf;
215 /* HBM mdev device BDF */
216 struct pci_bdf hbm_mdev_bdf;
217 int sad_all_offset;
218 /* Offsets of retry_rd_err_log registers */
219 u32 *offsets_scrub;
220 u32 *offsets_scrub_hbm0;
221 u32 *offsets_scrub_hbm1;
222 u32 *offsets_demand;
223 u32 *offsets_demand2;
224 u32 *offsets_demand_hbm0;
225 u32 *offsets_demand_hbm1;
226 };
227
228 typedef int (*get_dimm_config_f)(struct mem_ctl_info *mci,
229 struct res_config *cfg);
230 typedef bool (*skx_decode_f)(struct decoded_addr *res);
231 typedef void (*skx_show_retry_log_f)(struct decoded_addr *res, char *msg, int len, bool scrub_err);
232
233 int skx_adxl_get(void);
234 void skx_adxl_put(void);
235 void skx_set_decode(skx_decode_f decode, skx_show_retry_log_f show_retry_log);
236 void skx_set_mem_cfg(bool mem_cfg_2lm);
237
238 int skx_get_src_id(struct skx_dev *d, int off, u8 *id);
239 int skx_get_node_id(struct skx_dev *d, u8 *id);
240
241 int skx_get_all_bus_mappings(struct res_config *cfg, struct list_head **list);
242
243 int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm);
244
245 int skx_get_dimm_info(u32 mtr, u32 mcmtr, u32 amap, struct dimm_info *dimm,
246 struct skx_imc *imc, int chan, int dimmno,
247 struct res_config *cfg);
248
249 int skx_get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc,
250 int chan, int dimmno, const char *mod_str);
251
252 int skx_register_mci(struct skx_imc *imc, struct pci_dev *pdev,
253 const char *ctl_name, const char *mod_str,
254 get_dimm_config_f get_dimm_config,
255 struct res_config *cfg);
256
257 int skx_mce_check_error(struct notifier_block *nb, unsigned long val,
258 void *data);
259
260 void skx_remove(void);
261
262 #ifdef CONFIG_EDAC_DEBUG
263 void skx_setup_debug(const char *name);
264 void skx_teardown_debug(void);
265 #else
skx_setup_debug(const char * name)266 static inline void skx_setup_debug(const char *name) {}
skx_teardown_debug(void)267 static inline void skx_teardown_debug(void) {}
268 #endif
269
270 #endif /* _SKX_COMM_EDAC_H */
271