| /* Intel Sandy Bridge -EN/-EP/-EX Memory Controller kernel module |
| * |
| * This driver supports the memory controllers found on the Intel |
| * processor family Sandy Bridge. |
| * |
| * This file may be distributed under the terms of the |
| * GNU General Public License version 2 only. |
| * |
| * Copyright (c) 2011 by: |
| * Mauro Carvalho Chehab |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/pci_ids.h> |
| #include <linux/slab.h> |
| #include <linux/delay.h> |
| #include <linux/edac.h> |
| #include <linux/mmzone.h> |
| #include <linux/smp.h> |
| #include <linux/bitmap.h> |
| #include <linux/math64.h> |
| #include <asm/processor.h> |
| #include <asm/mce.h> |
| |
| #include "edac_core.h" |
| |
| /* Static vars */ |
| static LIST_HEAD(sbridge_edac_list); |
| static DEFINE_MUTEX(sbridge_edac_lock); |
| static int probed; |
| |
| /* |
| * Alter this version for the module when modifications are made |
| */ |
| #define SBRIDGE_REVISION " Ver: 1.1.1 " |
| #define EDAC_MOD_STR "sbridge_edac" |
| |
| /* |
| * Debug macros |
| */ |
| #define sbridge_printk(level, fmt, arg...) \ |
| edac_printk(level, "sbridge", fmt, ##arg) |
| |
| #define sbridge_mc_printk(mci, level, fmt, arg...) \ |
| edac_mc_chipset_printk(mci, level, "sbridge", 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)) |
| |
| /* Devices 12 Function 6, Offsets 0x80 to 0xcc */ |
| static const u32 sbridge_dram_rule[] = { |
| 0x80, 0x88, 0x90, 0x98, 0xa0, |
| 0xa8, 0xb0, 0xb8, 0xc0, 0xc8, |
| }; |
| |
| static const u32 ibridge_dram_rule[] = { |
| 0x60, 0x68, 0x70, 0x78, 0x80, |
| 0x88, 0x90, 0x98, 0xa0, 0xa8, |
| 0xb0, 0xb8, 0xc0, 0xc8, 0xd0, |
| 0xd8, 0xe0, 0xe8, 0xf0, 0xf8, |
| }; |
| |
| static const u32 knl_dram_rule[] = { |
| 0x60, 0x68, 0x70, 0x78, 0x80, /* 0-4 */ |
| 0x88, 0x90, 0x98, 0xa0, 0xa8, /* 5-9 */ |
| 0xb0, 0xb8, 0xc0, 0xc8, 0xd0, /* 10-14 */ |
| 0xd8, 0xe0, 0xe8, 0xf0, 0xf8, /* 15-19 */ |
| 0x100, 0x108, 0x110, 0x118, /* 20-23 */ |
| }; |
| |
| #define DRAM_RULE_ENABLE(reg) GET_BITFIELD(reg, 0, 0) |
| #define A7MODE(reg) GET_BITFIELD(reg, 26, 26) |
| |
| static char *show_dram_attr(u32 attr) |
| { |
| switch (attr) { |
| case 0: |
| return "DRAM"; |
| case 1: |
| return "MMCFG"; |
| case 2: |
| return "NXM"; |
| default: |
| return "unknown"; |
| } |
| } |
| |
| static const u32 sbridge_interleave_list[] = { |
| 0x84, 0x8c, 0x94, 0x9c, 0xa4, |
| 0xac, 0xb4, 0xbc, 0xc4, 0xcc, |
| }; |
| |
| static const u32 ibridge_interleave_list[] = { |
| 0x64, 0x6c, 0x74, 0x7c, 0x84, |
| 0x8c, 0x94, 0x9c, 0xa4, 0xac, |
| 0xb4, 0xbc, 0xc4, 0xcc, 0xd4, |
| 0xdc, 0xe4, 0xec, 0xf4, 0xfc, |
| }; |
| |
| static const u32 knl_interleave_list[] = { |
| 0x64, 0x6c, 0x74, 0x7c, 0x84, /* 0-4 */ |
| 0x8c, 0x94, 0x9c, 0xa4, 0xac, /* 5-9 */ |
| 0xb4, 0xbc, 0xc4, 0xcc, 0xd4, /* 10-14 */ |
| 0xdc, 0xe4, 0xec, 0xf4, 0xfc, /* 15-19 */ |
| 0x104, 0x10c, 0x114, 0x11c, /* 20-23 */ |
| }; |
| |
| struct interleave_pkg { |
| unsigned char start; |
| unsigned char end; |
| }; |
| |
| static const struct interleave_pkg sbridge_interleave_pkg[] = { |
| { 0, 2 }, |
| { 3, 5 }, |
| { 8, 10 }, |
| { 11, 13 }, |
| { 16, 18 }, |
| { 19, 21 }, |
| { 24, 26 }, |
| { 27, 29 }, |
| }; |
| |
| static const struct interleave_pkg ibridge_interleave_pkg[] = { |
| { 0, 3 }, |
| { 4, 7 }, |
| { 8, 11 }, |
| { 12, 15 }, |
| { 16, 19 }, |
| { 20, 23 }, |
| { 24, 27 }, |
| { 28, 31 }, |
| }; |
| |
| static inline int sad_pkg(const struct interleave_pkg *table, u32 reg, |
| int interleave) |
| { |
| return GET_BITFIELD(reg, table[interleave].start, |
| table[interleave].end); |
| } |
| |
| /* Devices 12 Function 7 */ |
| |
| #define TOLM 0x80 |
| #define TOHM 0x84 |
| #define HASWELL_TOLM 0xd0 |
| #define HASWELL_TOHM_0 0xd4 |
| #define HASWELL_TOHM_1 0xd8 |
| #define KNL_TOLM 0xd0 |
| #define KNL_TOHM_0 0xd4 |
| #define KNL_TOHM_1 0xd8 |
| |
| #define GET_TOLM(reg) ((GET_BITFIELD(reg, 0, 3) << 28) | 0x3ffffff) |
| #define GET_TOHM(reg) ((GET_BITFIELD(reg, 0, 20) << 25) | 0x3ffffff) |
| |
| /* Device 13 Function 6 */ |
| |
| #define SAD_TARGET 0xf0 |
| |
| #define SOURCE_ID(reg) GET_BITFIELD(reg, 9, 11) |
| |
| #define SOURCE_ID_KNL(reg) GET_BITFIELD(reg, 12, 14) |
| |
| #define SAD_CONTROL 0xf4 |
| |
| /* Device 14 function 0 */ |
| |
| static const u32 tad_dram_rule[] = { |
| 0x40, 0x44, 0x48, 0x4c, |
| 0x50, 0x54, 0x58, 0x5c, |
| 0x60, 0x64, 0x68, 0x6c, |
| }; |
| #define MAX_TAD ARRAY_SIZE(tad_dram_rule) |
| |
| #define TAD_LIMIT(reg) ((GET_BITFIELD(reg, 12, 31) << 26) | 0x3ffffff) |
| #define TAD_SOCK(reg) GET_BITFIELD(reg, 10, 11) |
| #define TAD_CH(reg) GET_BITFIELD(reg, 8, 9) |
| #define TAD_TGT3(reg) GET_BITFIELD(reg, 6, 7) |
| #define TAD_TGT2(reg) GET_BITFIELD(reg, 4, 5) |
| #define TAD_TGT1(reg) GET_BITFIELD(reg, 2, 3) |
| #define TAD_TGT0(reg) GET_BITFIELD(reg, 0, 1) |
| |
| /* Device 15, function 0 */ |
| |
| #define MCMTR 0x7c |
| #define KNL_MCMTR 0x624 |
| |
| #define IS_ECC_ENABLED(mcmtr) GET_BITFIELD(mcmtr, 2, 2) |
| #define IS_LOCKSTEP_ENABLED(mcmtr) GET_BITFIELD(mcmtr, 1, 1) |
| #define IS_CLOSE_PG(mcmtr) GET_BITFIELD(mcmtr, 0, 0) |
| |
| /* Device 15, function 1 */ |
| |
| #define RASENABLES 0xac |
| #define IS_MIRROR_ENABLED(reg) GET_BITFIELD(reg, 0, 0) |
| |
| /* Device 15, functions 2-5 */ |
| |
| static const int mtr_regs[] = { |
| 0x80, 0x84, 0x88, |
| }; |
| |
| static const int knl_mtr_reg = 0xb60; |
| |
| #define RANK_DISABLE(mtr) GET_BITFIELD(mtr, 16, 19) |
| #define IS_DIMM_PRESENT(mtr) GET_BITFIELD(mtr, 14, 14) |
| #define RANK_CNT_BITS(mtr) GET_BITFIELD(mtr, 12, 13) |
| #define RANK_WIDTH_BITS(mtr) GET_BITFIELD(mtr, 2, 4) |
| #define COL_WIDTH_BITS(mtr) GET_BITFIELD(mtr, 0, 1) |
| |
| static const u32 tad_ch_nilv_offset[] = { |
| 0x90, 0x94, 0x98, 0x9c, |
| 0xa0, 0xa4, 0xa8, 0xac, |
| 0xb0, 0xb4, 0xb8, 0xbc, |
| }; |
| #define CHN_IDX_OFFSET(reg) GET_BITFIELD(reg, 28, 29) |
| #define TAD_OFFSET(reg) (GET_BITFIELD(reg, 6, 25) << 26) |
| |
| static const u32 rir_way_limit[] = { |
| 0x108, 0x10c, 0x110, 0x114, 0x118, |
| }; |
| #define MAX_RIR_RANGES ARRAY_SIZE(rir_way_limit) |
| |
| #define IS_RIR_VALID(reg) GET_BITFIELD(reg, 31, 31) |
| #define RIR_WAY(reg) GET_BITFIELD(reg, 28, 29) |
| |
| #define MAX_RIR_WAY 8 |
| |
| static const u32 rir_offset[MAX_RIR_RANGES][MAX_RIR_WAY] = { |
| { 0x120, 0x124, 0x128, 0x12c, 0x130, 0x134, 0x138, 0x13c }, |
| { 0x140, 0x144, 0x148, 0x14c, 0x150, 0x154, 0x158, 0x15c }, |
| { 0x160, 0x164, 0x168, 0x16c, 0x170, 0x174, 0x178, 0x17c }, |
| { 0x180, 0x184, 0x188, 0x18c, 0x190, 0x194, 0x198, 0x19c }, |
| { 0x1a0, 0x1a4, 0x1a8, 0x1ac, 0x1b0, 0x1b4, 0x1b8, 0x1bc }, |
| }; |
| |
| #define RIR_RNK_TGT(reg) GET_BITFIELD(reg, 16, 19) |
| #define RIR_OFFSET(reg) GET_BITFIELD(reg, 2, 14) |
| |
| /* Device 16, functions 2-7 */ |
| |
| /* |
| * FIXME: Implement the error count reads directly |
| */ |
| |
| static const u32 correrrcnt[] = { |
| 0x104, 0x108, 0x10c, 0x110, |
| }; |
| |
| #define RANK_ODD_OV(reg) GET_BITFIELD(reg, 31, 31) |
| #define RANK_ODD_ERR_CNT(reg) GET_BITFIELD(reg, 16, 30) |
| #define RANK_EVEN_OV(reg) GET_BITFIELD(reg, 15, 15) |
| #define RANK_EVEN_ERR_CNT(reg) GET_BITFIELD(reg, 0, 14) |
| |
| static const u32 correrrthrsld[] = { |
| 0x11c, 0x120, 0x124, 0x128, |
| }; |
| |
| #define RANK_ODD_ERR_THRSLD(reg) GET_BITFIELD(reg, 16, 30) |
| #define RANK_EVEN_ERR_THRSLD(reg) GET_BITFIELD(reg, 0, 14) |
| |
| |
| /* Device 17, function 0 */ |
| |
| #define SB_RANK_CFG_A 0x0328 |
| |
| #define IB_RANK_CFG_A 0x0320 |
| |
| /* |
| * sbridge structs |
| */ |
| |
| #define NUM_CHANNELS 8 /* 2MC per socket, four chan per MC */ |
| #define MAX_DIMMS 3 /* Max DIMMS per channel */ |
| #define KNL_MAX_CHAS 38 /* KNL max num. of Cache Home Agents */ |
| #define KNL_MAX_CHANNELS 6 /* KNL max num. of PCI channels */ |
| #define KNL_MAX_EDCS 8 /* Embedded DRAM controllers */ |
| #define CHANNEL_UNSPECIFIED 0xf /* Intel IA32 SDM 15-14 */ |
| |
| enum type { |
| SANDY_BRIDGE, |
| IVY_BRIDGE, |
| HASWELL, |
| BROADWELL, |
| KNIGHTS_LANDING, |
| }; |
| |
| struct sbridge_pvt; |
| struct sbridge_info { |
| enum type type; |
| u32 mcmtr; |
| u32 rankcfgr; |
| u64 (*get_tolm)(struct sbridge_pvt *pvt); |
| u64 (*get_tohm)(struct sbridge_pvt *pvt); |
| u64 (*rir_limit)(u32 reg); |
| u64 (*sad_limit)(u32 reg); |
| u32 (*interleave_mode)(u32 reg); |
| char* (*show_interleave_mode)(u32 reg); |
| u32 (*dram_attr)(u32 reg); |
| const u32 *dram_rule; |
| const u32 *interleave_list; |
| const struct interleave_pkg *interleave_pkg; |
| u8 max_sad; |
| u8 max_interleave; |
| u8 (*get_node_id)(struct sbridge_pvt *pvt); |
| enum mem_type (*get_memory_type)(struct sbridge_pvt *pvt); |
| enum dev_type (*get_width)(struct sbridge_pvt *pvt, u32 mtr); |
| struct pci_dev *pci_vtd; |
| }; |
| |
| struct sbridge_channel { |
| u32 ranks; |
| u32 dimms; |
| }; |
| |
| struct pci_id_descr { |
| int dev_id; |
| int optional; |
| }; |
| |
| struct pci_id_table { |
| const struct pci_id_descr *descr; |
| int n_devs; |
| }; |
| |
| struct sbridge_dev { |
| struct list_head list; |
| u8 bus, mc; |
| u8 node_id, source_id; |
| struct pci_dev **pdev; |
| int n_devs; |
| struct mem_ctl_info *mci; |
| }; |
| |
| struct knl_pvt { |
| struct pci_dev *pci_cha[KNL_MAX_CHAS]; |
| struct pci_dev *pci_channel[KNL_MAX_CHANNELS]; |
| struct pci_dev *pci_mc0; |
| struct pci_dev *pci_mc1; |
| struct pci_dev *pci_mc0_misc; |
| struct pci_dev *pci_mc1_misc; |
| struct pci_dev *pci_mc_info; /* tolm, tohm */ |
| }; |
| |
| struct sbridge_pvt { |
| struct pci_dev *pci_ta, *pci_ddrio, *pci_ras; |
| struct pci_dev *pci_sad0, *pci_sad1; |
| struct pci_dev *pci_ha0, *pci_ha1; |
| struct pci_dev *pci_br0, *pci_br1; |
| struct pci_dev *pci_ha1_ta; |
| struct pci_dev *pci_tad[NUM_CHANNELS]; |
| |
| struct sbridge_dev *sbridge_dev; |
| |
| struct sbridge_info info; |
| struct sbridge_channel channel[NUM_CHANNELS]; |
| |
| /* Memory type detection */ |
| bool is_mirrored, is_lockstep, is_close_pg; |
| |
| /* Fifo double buffers */ |
| struct mce mce_entry[MCE_LOG_LEN]; |
| struct mce mce_outentry[MCE_LOG_LEN]; |
| |
| /* Fifo in/out counters */ |
| unsigned mce_in, mce_out; |
| |
| /* Count indicator to show errors not got */ |
| unsigned mce_overrun; |
| |
| /* Memory description */ |
| u64 tolm, tohm; |
| struct knl_pvt knl; |
| }; |
| |
| #define PCI_DESCR(device_id, opt) \ |
| .dev_id = (device_id), \ |
| .optional = opt |
| |
| static const struct pci_id_descr pci_dev_descr_sbridge[] = { |
| /* Processor Home Agent */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0, 0) }, |
| |
| /* Memory controller */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_RAS, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD1, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD2, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD3, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_DDRIO, 1) }, |
| |
| /* System Address Decoder */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_SAD0, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_SAD1, 0) }, |
| |
| /* Broadcast Registers */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_BR, 0) }, |
| }; |
| |
| #define PCI_ID_TABLE_ENTRY(A) { .descr=A, .n_devs = ARRAY_SIZE(A) } |
| static const struct pci_id_table pci_dev_descr_sbridge_table[] = { |
| PCI_ID_TABLE_ENTRY(pci_dev_descr_sbridge), |
| {0,} /* 0 terminated list. */ |
| }; |
| |
| /* This changes depending if 1HA or 2HA: |
| * 1HA: |
| * 0x0eb8 (17.0) is DDRIO0 |
| * 2HA: |
| * 0x0ebc (17.4) is DDRIO0 |
| */ |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_1HA_DDRIO0 0x0eb8 |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_2HA_DDRIO0 0x0ebc |
| |
| /* pci ids */ |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0 0x0ea0 |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA 0x0ea8 |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS 0x0e71 |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0 0x0eaa |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD1 0x0eab |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD2 0x0eac |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD3 0x0ead |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_SAD 0x0ec8 |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_BR0 0x0ec9 |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_BR1 0x0eca |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1 0x0e60 |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TA 0x0e68 |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_RAS 0x0e79 |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0 0x0e6a |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD1 0x0e6b |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD2 0x0e6c |
| #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD3 0x0e6d |
| |
| static const struct pci_id_descr pci_dev_descr_ibridge[] = { |
| /* Processor Home Agent */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0, 0) }, |
| |
| /* Memory controller */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD1, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD2, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD3, 0) }, |
| |
| /* System Address Decoder */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_SAD, 0) }, |
| |
| /* Broadcast Registers */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_BR0, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_BR1, 0) }, |
| |
| /* Optional, mode 2HA */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1, 1) }, |
| #if 0 |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TA, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_RAS, 1) }, |
| #endif |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD1, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD2, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD3, 1) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_1HA_DDRIO0, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_2HA_DDRIO0, 1) }, |
| }; |
| |
| static const struct pci_id_table pci_dev_descr_ibridge_table[] = { |
| PCI_ID_TABLE_ENTRY(pci_dev_descr_ibridge), |
| {0,} /* 0 terminated list. */ |
| }; |
| |
| /* Haswell support */ |
| /* EN processor: |
| * - 1 IMC |
| * - 3 DDR3 channels, 2 DPC per channel |
| * EP processor: |
| * - 1 or 2 IMC |
| * - 4 DDR4 channels, 3 DPC per channel |
| * EP 4S processor: |
| * - 2 IMC |
| * - 4 DDR4 channels, 3 DPC per channel |
| * EX processor: |
| * - 2 IMC |
| * - each IMC interfaces with a SMI 2 channel |
| * - each SMI channel interfaces with a scalable memory buffer |
| * - each scalable memory buffer supports 4 DDR3/DDR4 channels, 3 DPC |
| */ |
| #define HASWELL_DDRCRCLKCONTROLS 0xa10 /* Ditto on Broadwell */ |
| #define HASWELL_HASYSDEFEATURE2 0x84 |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_VTD_MISC 0x2f28 |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0 0x2fa0 |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1 0x2f60 |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TA 0x2fa8 |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_THERMAL 0x2f71 |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TA 0x2f68 |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_THERMAL 0x2f79 |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD0 0x2ffc |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD1 0x2ffd |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD0 0x2faa |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD1 0x2fab |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD2 0x2fac |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD3 0x2fad |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD0 0x2f6a |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD1 0x2f6b |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD2 0x2f6c |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD3 0x2f6d |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO0 0x2fbd |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO1 0x2fbf |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO2 0x2fb9 |
| #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO3 0x2fbb |
| static const struct pci_id_descr pci_dev_descr_haswell[] = { |
| /* first item must be the HA */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0, 0) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD0, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD1, 0) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1, 1) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TA, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_THERMAL, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD0, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD1, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD2, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD3, 1) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO0, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO1, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO2, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO3, 1) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TA, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_THERMAL, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD0, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD1, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD2, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD3, 1) }, |
| }; |
| |
| static const struct pci_id_table pci_dev_descr_haswell_table[] = { |
| PCI_ID_TABLE_ENTRY(pci_dev_descr_haswell), |
| {0,} /* 0 terminated list. */ |
| }; |
| |
| /* Knight's Landing Support */ |
| /* |
| * KNL's memory channels are swizzled between memory controllers. |
| * MC0 is mapped to CH3,5,6 and MC1 is mapped to CH0,1,2 |
| */ |
| #define knl_channel_remap(channel) ((channel + 3) % 6) |
| |
| /* Memory controller, TAD tables, error injection - 2-8-0, 2-9-0 (2 of these) */ |
| #define PCI_DEVICE_ID_INTEL_KNL_IMC_MC 0x7840 |
| /* DRAM channel stuff; bank addrs, dimmmtr, etc.. 2-8-2 - 2-9-4 (6 of these) */ |
| #define PCI_DEVICE_ID_INTEL_KNL_IMC_CHANNEL 0x7843 |
| /* kdrwdbu TAD limits/offsets, MCMTR - 2-10-1, 2-11-1 (2 of these) */ |
| #define PCI_DEVICE_ID_INTEL_KNL_IMC_TA 0x7844 |
| /* CHA broadcast registers, dram rules - 1-29-0 (1 of these) */ |
| #define PCI_DEVICE_ID_INTEL_KNL_IMC_SAD0 0x782a |
| /* SAD target - 1-29-1 (1 of these) */ |
| #define PCI_DEVICE_ID_INTEL_KNL_IMC_SAD1 0x782b |
| /* Caching / Home Agent */ |
| #define PCI_DEVICE_ID_INTEL_KNL_IMC_CHA 0x782c |
| /* Device with TOLM and TOHM, 0-5-0 (1 of these) */ |
| #define PCI_DEVICE_ID_INTEL_KNL_IMC_TOLHM 0x7810 |
| |
| /* |
| * KNL differs from SB, IB, and Haswell in that it has multiple |
| * instances of the same device with the same device ID, so we handle that |
| * by creating as many copies in the table as we expect to find. |
| * (Like device ID must be grouped together.) |
| */ |
| |
| static const struct pci_id_descr pci_dev_descr_knl[] = { |
| [0] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_SAD0, 0) }, |
| [1] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_SAD1, 0) }, |
| [2 ... 3] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_MC, 0)}, |
| [4 ... 41] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_CHA, 0) }, |
| [42 ... 47] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_CHANNEL, 0) }, |
| [48] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_TA, 0) }, |
| [49] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_TOLHM, 0) }, |
| }; |
| |
| static const struct pci_id_table pci_dev_descr_knl_table[] = { |
| PCI_ID_TABLE_ENTRY(pci_dev_descr_knl), |
| {0,} |
| }; |
| |
| /* |
| * Broadwell support |
| * |
| * DE processor: |
| * - 1 IMC |
| * - 2 DDR3 channels, 2 DPC per channel |
| * EP processor: |
| * - 1 or 2 IMC |
| * - 4 DDR4 channels, 3 DPC per channel |
| * EP 4S processor: |
| * - 2 IMC |
| * - 4 DDR4 channels, 3 DPC per channel |
| * EX processor: |
| * - 2 IMC |
| * - each IMC interfaces with a SMI 2 channel |
| * - each SMI channel interfaces with a scalable memory buffer |
| * - each scalable memory buffer supports 4 DDR3/DDR4 channels, 3 DPC |
| */ |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_VTD_MISC 0x6f28 |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0 0x6fa0 |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1 0x6f60 |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA 0x6fa8 |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_THERMAL 0x6f71 |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TA 0x6f68 |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_THERMAL 0x6f79 |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD0 0x6ffc |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD1 0x6ffd |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0 0x6faa |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD1 0x6fab |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD2 0x6fac |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD3 0x6fad |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD0 0x6f6a |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD1 0x6f6b |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD2 0x6f6c |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD3 0x6f6d |
| #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_DDRIO0 0x6faf |
| |
| static const struct pci_id_descr pci_dev_descr_broadwell[] = { |
| /* first item must be the HA */ |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0, 0) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD0, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD1, 0) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1, 1) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_THERMAL, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD1, 0) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD2, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD3, 1) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_DDRIO0, 1) }, |
| |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TA, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_THERMAL, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD0, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD1, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD2, 1) }, |
| { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD3, 1) }, |
| }; |
| |
| static const struct pci_id_table pci_dev_descr_broadwell_table[] = { |
| PCI_ID_TABLE_ENTRY(pci_dev_descr_broadwell), |
| {0,} /* 0 terminated list. */ |
| }; |
| |
| /* |
| * pci_device_id table for which devices we are looking for |
| */ |
| static const struct pci_device_id sbridge_pci_tbl[] = { |
| {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KNL_IMC_SAD0)}, |
| {0,} /* 0 terminated list. */ |
| }; |
| |
| |
| /**************************************************************************** |
| Ancillary status routines |
| ****************************************************************************/ |
| |
| static inline int numrank(enum type type, u32 mtr) |
| { |
| int ranks = (1 << RANK_CNT_BITS(mtr)); |
| int max = 4; |
| |
| if (type == HASWELL || type == BROADWELL || type == KNIGHTS_LANDING) |
| max = 8; |
| |
| if (ranks > max) { |
| edac_dbg(0, "Invalid number of ranks: %d (max = %i) raw value = %x (%04x)\n", |
| ranks, max, (unsigned int)RANK_CNT_BITS(mtr), mtr); |
| return -EINVAL; |
| } |
| |
| return ranks; |
| } |
| |
| static inline int numrow(u32 mtr) |
| { |
| int rows = (RANK_WIDTH_BITS(mtr) + 12); |
| |
| if (rows < 13 || rows > 18) { |
| edac_dbg(0, "Invalid number of rows: %d (should be between 14 and 17) raw value = %x (%04x)\n", |
| rows, (unsigned int)RANK_WIDTH_BITS(mtr), mtr); |
| return -EINVAL; |
| } |
| |
| return 1 << rows; |
| } |
| |
| static inline int numcol(u32 mtr) |
| { |
| int cols = (COL_WIDTH_BITS(mtr) + 10); |
| |
| if (cols > 12) { |
| edac_dbg(0, "Invalid number of cols: %d (max = 4) raw value = %x (%04x)\n", |
| cols, (unsigned int)COL_WIDTH_BITS(mtr), mtr); |
| return -EINVAL; |
| } |
| |
| return 1 << cols; |
| } |
| |
| static struct sbridge_dev *get_sbridge_dev(u8 bus, int multi_bus) |
| { |
| struct sbridge_dev *sbridge_dev; |
| |
| /* |
| * If we have devices scattered across several busses that pertain |
| * to the same memory controller, we'll lump them all together. |
| */ |
| if (multi_bus) { |
| return list_first_entry_or_null(&sbridge_edac_list, |
| struct sbridge_dev, list); |
| } |
| |
| list_for_each_entry(sbridge_dev, &sbridge_edac_list, list) { |
| if (sbridge_dev->bus == bus) |
| return sbridge_dev; |
| } |
| |
| return NULL; |
| } |
| |
| static struct sbridge_dev *alloc_sbridge_dev(u8 bus, |
| const struct pci_id_table *table) |
| { |
| struct sbridge_dev *sbridge_dev; |
| |
| sbridge_dev = kzalloc(sizeof(*sbridge_dev), GFP_KERNEL); |
| if (!sbridge_dev) |
| return NULL; |
| |
| sbridge_dev->pdev = kzalloc(sizeof(*sbridge_dev->pdev) * table->n_devs, |
| GFP_KERNEL); |
| if (!sbridge_dev->pdev) { |
| kfree(sbridge_dev); |
| return NULL; |
| } |
| |
| sbridge_dev->bus = bus; |
| sbridge_dev->n_devs = table->n_devs; |
| list_add_tail(&sbridge_dev->list, &sbridge_edac_list); |
| |
| return sbridge_dev; |
| } |
| |
| static void free_sbridge_dev(struct sbridge_dev *sbridge_dev) |
| { |
| list_del(&sbridge_dev->list); |
| kfree(sbridge_dev->pdev); |
| kfree(sbridge_dev); |
| } |
| |
| static u64 sbridge_get_tolm(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| |
| /* Address range is 32:28 */ |
| pci_read_config_dword(pvt->pci_sad1, TOLM, ®); |
| return GET_TOLM(reg); |
| } |
| |
| static u64 sbridge_get_tohm(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| |
| pci_read_config_dword(pvt->pci_sad1, TOHM, ®); |
| return GET_TOHM(reg); |
| } |
| |
| static u64 ibridge_get_tolm(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| |
| pci_read_config_dword(pvt->pci_br1, TOLM, ®); |
| |
| return GET_TOLM(reg); |
| } |
| |
| static u64 ibridge_get_tohm(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| |
| pci_read_config_dword(pvt->pci_br1, TOHM, ®); |
| |
| return GET_TOHM(reg); |
| } |
| |
| static u64 rir_limit(u32 reg) |
| { |
| return ((u64)GET_BITFIELD(reg, 1, 10) << 29) | 0x1fffffff; |
| } |
| |
| static u64 sad_limit(u32 reg) |
| { |
| return (GET_BITFIELD(reg, 6, 25) << 26) | 0x3ffffff; |
| } |
| |
| static u32 interleave_mode(u32 reg) |
| { |
| return GET_BITFIELD(reg, 1, 1); |
| } |
| |
| char *show_interleave_mode(u32 reg) |
| { |
| return interleave_mode(reg) ? "8:6" : "[8:6]XOR[18:16]"; |
| } |
| |
| static u32 dram_attr(u32 reg) |
| { |
| return GET_BITFIELD(reg, 2, 3); |
| } |
| |
| static u64 knl_sad_limit(u32 reg) |
| { |
| return (GET_BITFIELD(reg, 7, 26) << 26) | 0x3ffffff; |
| } |
| |
| static u32 knl_interleave_mode(u32 reg) |
| { |
| return GET_BITFIELD(reg, 1, 2); |
| } |
| |
| static char *knl_show_interleave_mode(u32 reg) |
| { |
| char *s; |
| |
| switch (knl_interleave_mode(reg)) { |
| case 0: |
| s = "use address bits [8:6]"; |
| break; |
| case 1: |
| s = "use address bits [10:8]"; |
| break; |
| case 2: |
| s = "use address bits [14:12]"; |
| break; |
| case 3: |
| s = "use address bits [32:30]"; |
| break; |
| default: |
| WARN_ON(1); |
| break; |
| } |
| |
| return s; |
| } |
| |
| static u32 dram_attr_knl(u32 reg) |
| { |
| return GET_BITFIELD(reg, 3, 4); |
| } |
| |
| |
| static enum mem_type get_memory_type(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| enum mem_type mtype; |
| |
| if (pvt->pci_ddrio) { |
| pci_read_config_dword(pvt->pci_ddrio, pvt->info.rankcfgr, |
| ®); |
| if (GET_BITFIELD(reg, 11, 11)) |
| /* FIXME: Can also be LRDIMM */ |
| mtype = MEM_RDDR3; |
| else |
| mtype = MEM_DDR3; |
| } else |
| mtype = MEM_UNKNOWN; |
| |
| return mtype; |
| } |
| |
| static enum mem_type haswell_get_memory_type(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| bool registered = false; |
| enum mem_type mtype = MEM_UNKNOWN; |
| |
| if (!pvt->pci_ddrio) |
| goto out; |
| |
| pci_read_config_dword(pvt->pci_ddrio, |
| HASWELL_DDRCRCLKCONTROLS, ®); |
| /* Is_Rdimm */ |
| if (GET_BITFIELD(reg, 16, 16)) |
| registered = true; |
| |
| pci_read_config_dword(pvt->pci_ta, MCMTR, ®); |
| if (GET_BITFIELD(reg, 14, 14)) { |
| if (registered) |
| mtype = MEM_RDDR4; |
| else |
| mtype = MEM_DDR4; |
| } else { |
| if (registered) |
| mtype = MEM_RDDR3; |
| else |
| mtype = MEM_DDR3; |
| } |
| |
| out: |
| return mtype; |
| } |
| |
| static enum dev_type knl_get_width(struct sbridge_pvt *pvt, u32 mtr) |
| { |
| /* for KNL value is fixed */ |
| return DEV_X16; |
| } |
| |
| static enum dev_type sbridge_get_width(struct sbridge_pvt *pvt, u32 mtr) |
| { |
| /* there's no way to figure out */ |
| return DEV_UNKNOWN; |
| } |
| |
| static enum dev_type __ibridge_get_width(u32 mtr) |
| { |
| enum dev_type type; |
| |
| switch (mtr) { |
| case 3: |
| type = DEV_UNKNOWN; |
| break; |
| case 2: |
| type = DEV_X16; |
| break; |
| case 1: |
| type = DEV_X8; |
| break; |
| case 0: |
| type = DEV_X4; |
| break; |
| } |
| |
| return type; |
| } |
| |
| static enum dev_type ibridge_get_width(struct sbridge_pvt *pvt, u32 mtr) |
| { |
| /* |
| * ddr3_width on the documentation but also valid for DDR4 on |
| * Haswell |
| */ |
| return __ibridge_get_width(GET_BITFIELD(mtr, 7, 8)); |
| } |
| |
| static enum dev_type broadwell_get_width(struct sbridge_pvt *pvt, u32 mtr) |
| { |
| /* ddr3_width on the documentation but also valid for DDR4 */ |
| return __ibridge_get_width(GET_BITFIELD(mtr, 8, 9)); |
| } |
| |
| static enum mem_type knl_get_memory_type(struct sbridge_pvt *pvt) |
| { |
| /* DDR4 RDIMMS and LRDIMMS are supported */ |
| return MEM_RDDR4; |
| } |
| |
| static u8 get_node_id(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| pci_read_config_dword(pvt->pci_br0, SAD_CONTROL, ®); |
| return GET_BITFIELD(reg, 0, 2); |
| } |
| |
| static u8 haswell_get_node_id(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| |
| pci_read_config_dword(pvt->pci_sad1, SAD_CONTROL, ®); |
| return GET_BITFIELD(reg, 0, 3); |
| } |
| |
| static u8 knl_get_node_id(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| |
| pci_read_config_dword(pvt->pci_sad1, SAD_CONTROL, ®); |
| return GET_BITFIELD(reg, 0, 2); |
| } |
| |
| |
| static u64 haswell_get_tolm(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| |
| pci_read_config_dword(pvt->info.pci_vtd, HASWELL_TOLM, ®); |
| return (GET_BITFIELD(reg, 26, 31) << 26) | 0x3ffffff; |
| } |
| |
| static u64 haswell_get_tohm(struct sbridge_pvt *pvt) |
| { |
| u64 rc; |
| u32 reg; |
| |
| pci_read_config_dword(pvt->info.pci_vtd, HASWELL_TOHM_0, ®); |
| rc = GET_BITFIELD(reg, 26, 31); |
| pci_read_config_dword(pvt->info.pci_vtd, HASWELL_TOHM_1, ®); |
| rc = ((reg << 6) | rc) << 26; |
| |
| return rc | 0x1ffffff; |
| } |
| |
| static u64 knl_get_tolm(struct sbridge_pvt *pvt) |
| { |
| u32 reg; |
| |
| pci_read_config_dword(pvt->knl.pci_mc_info, KNL_TOLM, ®); |
| return (GET_BITFIELD(reg, 26, 31) << 26) | 0x3ffffff; |
| } |
| |
| static u64 knl_get_tohm(struct sbridge_pvt *pvt) |
| { |
| u64 rc; |
| u32 reg_lo, reg_hi; |
| |
| pci_read_config_dword(pvt->knl.pci_mc_info, KNL_TOHM_0, ®_lo); |
| pci_read_config_dword(pvt->knl.pci_mc_info, KNL_TOHM_1, ®_hi); |
| rc = ((u64)reg_hi << 32) | reg_lo; |
| return rc | 0x3ffffff; |
| } |
| |
| |
| static u64 haswell_rir_limit(u32 reg) |
| { |
| return (((u64)GET_BITFIELD(reg, 1, 11) + 1) << 29) - 1; |
| } |
| |
| static inline u8 sad_pkg_socket(u8 pkg) |
| { |
| /* on Ivy Bridge, nodeID is SASS, where A is HA and S is node id */ |
| return ((pkg >> 3) << 2) | (pkg & 0x3); |
| } |
| |
| static inline u8 sad_pkg_ha(u8 pkg) |
| { |
| return (pkg >> 2) & 0x1; |
| } |
| |
| /**************************************************************************** |
| Memory check routines |
| ****************************************************************************/ |
| static struct pci_dev *get_pdev_same_bus(u8 bus, u32 id) |
| { |
| struct pci_dev *pdev = NULL; |
| |
| do { |
| pdev = pci_get_device(PCI_VENDOR_ID_INTEL, id, pdev); |
| if (pdev && pdev->bus->number == bus) |
| break; |
| } while (pdev); |
| |
| return pdev; |
| } |
| |
| /** |
| * check_if_ecc_is_active() - Checks if ECC is active |
| * @bus: Device bus |
| * @type: Memory controller type |
| * returns: 0 in case ECC is active, -ENODEV if it can't be determined or |
| * disabled |
| */ |
| static int check_if_ecc_is_active(const u8 bus, enum type type) |
| { |
| struct pci_dev *pdev = NULL; |
| u32 mcmtr, id; |
| |
| switch (type) { |
| case IVY_BRIDGE: |
| id = PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA; |
| break; |
| case HASWELL: |
| id = PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TA; |
| break; |
| case SANDY_BRIDGE: |
| id = PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA; |
| break; |
| case BROADWELL: |
| id = PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA; |
| break; |
| case KNIGHTS_LANDING: |
| /* |
| * KNL doesn't group things by bus the same way |
| * SB/IB/Haswell does. |
| */ |
| id = PCI_DEVICE_ID_INTEL_KNL_IMC_TA; |
| break; |
| default: |
| return -ENODEV; |
| } |
| |
| if (type != KNIGHTS_LANDING) |
| pdev = get_pdev_same_bus(bus, id); |
| else |
| pdev = pci_get_device(PCI_VENDOR_ID_INTEL, id, 0); |
| |
| if (!pdev) { |
| sbridge_printk(KERN_ERR, "Couldn't find PCI device " |
| "%04x:%04x! on bus %02d\n", |
| PCI_VENDOR_ID_INTEL, id, bus); |
| return -ENODEV; |
| } |
| |
| pci_read_config_dword(pdev, |
| type == KNIGHTS_LANDING ? KNL_MCMTR : MCMTR, &mcmtr); |
| if (!IS_ECC_ENABLED(mcmtr)) { |
| sbridge_printk(KERN_ERR, "ECC is disabled. Aborting\n"); |
| return -ENODEV; |
| } |
| return 0; |
| } |
| |
| /* Low bits of TAD limit, and some metadata. */ |
| static const u32 knl_tad_dram_limit_lo[] = { |
| 0x400, 0x500, 0x600, 0x700, |
| 0x800, 0x900, 0xa00, 0xb00, |
| }; |
| |
| /* Low bits of TAD offset. */ |
| static const u32 knl_tad_dram_offset_lo[] = { |
| 0x404, 0x504, 0x604, 0x704, |
| 0x804, 0x904, 0xa04, 0xb04, |
| }; |
| |
| /* High 16 bits of TAD limit and offset. */ |
| static const u32 knl_tad_dram_hi[] = { |
| 0x408, 0x508, 0x608, 0x708, |
| 0x808, 0x908, 0xa08, 0xb08, |
| }; |
| |
| /* Number of ways a tad entry is interleaved. */ |
| static const u32 knl_tad_ways[] = { |
| 8, 6, 4, 3, 2, 1, |
| }; |
| |
| /* |
| * Retrieve the n'th Target Address Decode table entry |
| * from the memory controller's TAD table. |
| * |
| * @pvt: driver private data |
| * @entry: which entry you want to retrieve |
| * @mc: which memory controller (0 or 1) |
| * @offset: output tad range offset |
| * @limit: output address of first byte above tad range |
| * @ways: output number of interleave ways |
| * |
| * The offset value has curious semantics. It's a sort of running total |
| * of the sizes of all the memory regions that aren't mapped in this |
| * tad table. |
| */ |
| static int knl_get_tad(const struct sbridge_pvt *pvt, |
| const int entry, |
| const int mc, |
| u64 *offset, |
| u64 *limit, |
| int *ways) |
| { |
| u32 reg_limit_lo, reg_offset_lo, reg_hi; |
| struct pci_dev *pci_mc; |
| int way_id; |
| |
| switch (mc) { |
| case 0: |
| pci_mc = pvt->knl.pci_mc0; |
| break; |
| case 1: |
| pci_mc = pvt->knl.pci_mc1; |
| break; |
| default: |
| WARN_ON(1); |
| return -EINVAL; |
| } |
| |
| pci_read_config_dword(pci_mc, |
| knl_tad_dram_limit_lo[entry], ®_limit_lo); |
| pci_read_config_dword(pci_mc, |
| knl_tad_dram_offset_lo[entry], ®_offset_lo); |
| pci_read_config_dword(pci_mc, |
| knl_tad_dram_hi[entry], ®_hi); |
| |
| /* Is this TAD entry enabled? */ |
| if (!GET_BITFIELD(reg_limit_lo, 0, 0)) |
| return -ENODEV; |
| |
| way_id = GET_BITFIELD(reg_limit_lo, 3, 5); |
| |
| if (way_id < ARRAY_SIZE(knl_tad_ways)) { |
| *ways = knl_tad_ways[way_id]; |
| } else { |
| *ways = 0; |
| sbridge_printk(KERN_ERR, |
| "Unexpected value %d in mc_tad_limit_lo wayness field\n", |
| way_id); |
| return -ENODEV; |
| } |
| |
| /* |
| * The least significant 6 bits of base and limit are truncated. |
| * For limit, we fill the missing bits with 1s. |
| */ |
| *offset = ((u64) GET_BITFIELD(reg_offset_lo, 6, 31) << 6) | |
| ((u64) GET_BITFIELD(reg_hi, 0, 15) << 32); |
| *limit = ((u64) GET_BITFIELD(reg_limit_lo, 6, 31) << 6) | 63 | |
| ((u64) GET_BITFIELD(reg_hi, 16, 31) << 32); |
| |
| return 0; |
| } |
| |
| /* Determine which memory controller is responsible for a given channel. */ |
| static int knl_channel_mc(int channel) |
| { |
| WARN_ON(channel < 0 || channel >= 6); |
| |
| return channel < 3 ? 1 : 0; |
| } |
| |
| /* |
| * Get the Nth entry from EDC_ROUTE_TABLE register. |
| * (This is the per-tile mapping of logical interleave targets to |
| * physical EDC modules.) |
| * |
| * entry 0: 0:2 |
| * 1: 3:5 |
| * 2: 6:8 |
| * 3: 9:11 |
| * 4: 12:14 |
| * 5: 15:17 |
| * 6: 18:20 |
| * 7: 21:23 |
| * reserved: 24:31 |
| */ |
| static u32 knl_get_edc_route(int entry, u32 reg) |
| { |
| WARN_ON(entry >= KNL_MAX_EDCS); |
| return GET_BITFIELD(reg, entry*3, (entry*3)+2); |
| } |
| |
| /* |
| * Get the Nth entry from MC_ROUTE_TABLE register. |
| * (This is the per-tile mapping of logical interleave targets to |
| * physical DRAM channels modules.) |
| * |
| * entry 0: mc 0:2 channel 18:19 |
| * 1: mc 3:5 channel 20:21 |
| * 2: mc 6:8 channel 22:23 |
| * 3: mc 9:11 channel 24:25 |
| * 4: mc 12:14 channel 26:27 |
| * 5: mc 15:17 channel 28:29 |
| * reserved: 30:31 |
| * |
| * Though we have 3 bits to identify the MC, we should only see |
| * the values 0 or 1. |
| */ |
| |
| static u32 knl_get_mc_route(int entry, u32 reg) |
| { |
| int mc, chan; |
| |
| WARN_ON(entry >= KNL_MAX_CHANNELS); |
| |
| mc = GET_BITFIELD(reg, entry*3, (entry*3)+2); |
| chan = GET_BITFIELD(reg, (entry*2) + 18, (entry*2) + 18 + 1); |
| |
| return knl_channel_remap(mc*3 + chan); |
| } |
| |
| /* |
| * Render the EDC_ROUTE register in human-readable form. |
| * Output string s should be at least KNL_MAX_EDCS*2 bytes. |
| */ |
| static void knl_show_edc_route(u32 reg, char *s) |
| { |
| int i; |
| |
| for (i = 0; i < KNL_MAX_EDCS; i++) { |
| s[i*2] = knl_get_edc_route(i, reg) + '0'; |
| s[i*2+1] = '-'; |
| } |
| |
| s[KNL_MAX_EDCS*2 - 1] = '\0'; |
| } |
| |
| /* |
| * Render the MC_ROUTE register in human-readable form. |
| * Output string s should be at least KNL_MAX_CHANNELS*2 bytes. |
| */ |
| static void knl_show_mc_route(u32 reg, char *s) |
| { |
| int i; |
| |
| for (i = 0; i < KNL_MAX_CHANNELS; i++) { |
| s[i*2] = knl_get_mc_route(i, reg) + '0'; |
| s[i*2+1] = '-'; |
| } |
| |
| s[KNL_MAX_CHANNELS*2 - 1] = '\0'; |
| } |
| |
| #define KNL_EDC_ROUTE 0xb8 |
| #define KNL_MC_ROUTE 0xb4 |
| |
| /* Is this dram rule backed by regular DRAM in flat mode? */ |
| #define KNL_EDRAM(reg) GET_BITFIELD(reg, 29, 29) |
| |
| /* Is this dram rule cached? */ |
| #define KNL_CACHEABLE(reg) GET_BITFIELD(reg, 28, 28) |
| |
| /* Is this rule backed by edc ? */ |
| #define KNL_EDRAM_ONLY(reg) GET_BITFIELD(reg, 29, 29) |
| |
| /* Is this rule backed by DRAM, cacheable in EDRAM? */ |
| #define KNL_CACHEABLE(reg) GET_BITFIELD(reg, 28, 28) |
| |
| /* Is this rule mod3? */ |
| #define KNL_MOD3(reg) GET_BITFIELD(reg, 27, 27) |
| |
| /* |
| * Figure out how big our RAM modules are. |
| * |
| * The DIMMMTR register in KNL doesn't tell us the size of the DIMMs, so we |
| * have to figure this out from the SAD rules, interleave lists, route tables, |
| * and TAD rules. |
| * |
| * SAD rules can have holes in them (e.g. the 3G-4G hole), so we have to |
| * inspect the TAD rules to figure out how large the SAD regions really are. |
| * |
| * When we know the real size of a SAD region and how many ways it's |
| * interleaved, we know the individual contribution of each channel to |
| * TAD is size/ways. |
| * |
| * Finally, we have to check whether each channel participates in each SAD |
| * region. |
| * |
| * Fortunately, KNL only supports one DIMM per channel, so once we know how |
| * much memory the channel uses, we know the DIMM is at least that large. |
| * (The BIOS might possibly choose not to map all available memory, in which |
| * case we will underreport the size of the DIMM.) |
| * |
| * In theory, we could try to determine the EDC sizes as well, but that would |
| * only work in flat mode, not in cache mode. |
| * |
| * @mc_sizes: Output sizes of channels (must have space for KNL_MAX_CHANNELS |
| * elements) |
| */ |
| static int knl_get_dimm_capacity(struct sbridge_pvt *pvt, u64 *mc_sizes) |
| { |
| u64 sad_base, sad_size, sad_limit = 0; |
| u64 tad_base, tad_size, tad_limit, tad_deadspace, tad_livespace; |
| int sad_rule = 0; |
| int tad_rule = 0; |
| int intrlv_ways, tad_ways; |
| u32 first_pkg, pkg; |
| int i; |
| u64 sad_actual_size[2]; /* sad size accounting for holes, per mc */ |
| u32 dram_rule, interleave_reg; |
| u32 mc_route_reg[KNL_MAX_CHAS]; |
| u32 edc_route_reg[KNL_MAX_CHAS]; |
| int edram_only; |
| char edc_route_string[KNL_MAX_EDCS*2]; |
| char mc_route_string[KNL_MAX_CHANNELS*2]; |
| int cur_reg_start; |
| int mc; |
| int channel; |
| int way; |
| int participants[KNL_MAX_CHANNELS]; |
| int participant_count = 0; |
| |
| for (i = 0; i < KNL_MAX_CHANNELS; i++) |
| mc_sizes[i] = 0; |
| |
| /* Read the EDC route table in each CHA. */ |
| cur_reg_start = 0; |
| for (i = 0; i < KNL_MAX_CHAS; i++) { |
| pci_read_config_dword(pvt->knl.pci_cha[i], |
| KNL_EDC_ROUTE, &edc_route_reg[i]); |
| |
| if (i > 0 && edc_route_reg[i] != edc_route_reg[i-1]) { |
| knl_show_edc_route(edc_route_reg[i-1], |
| edc_route_string); |
| if (cur_reg_start == i-1) |
| edac_dbg(0, "edc route table for CHA %d: %s\n", |
| cur_reg_start, edc_route_string); |
| else |
| edac_dbg(0, "edc route table for CHA %d-%d: %s\n", |
| cur_reg_start, i-1, edc_route_string); |
| cur_reg_start = i; |
| } |
| } |
| knl_show_edc_route(edc_route_reg[i-1], edc_route_string); |
| if (cur_reg_start == i-1) |
| edac_dbg(0, "edc route table for CHA %d: %s\n", |
| cur_reg_start, edc_route_string); |
| else |
| edac_dbg(0, "edc route table for CHA %d-%d: %s\n", |
| cur_reg_start, i-1, edc_route_string); |
| |
| /* Read the MC route table in each CHA. */ |
| cur_reg_start = 0; |
| for (i = 0; i < KNL_MAX_CHAS; i++) { |
| pci_read_config_dword(pvt->knl.pci_cha[i], |
| KNL_MC_ROUTE, &mc_route_reg[i]); |
| |
| if (i > 0 && mc_route_reg[i] != mc_route_reg[i-1]) { |
| knl_show_mc_route(mc_route_reg[i-1], mc_route_string); |
| if (cur_reg_start == i-1) |
| edac_dbg(0, "mc route table for CHA %d: %s\n", |
| cur_reg_start, mc_route_string); |
| else |
| edac_dbg(0, "mc route table for CHA %d-%d: %s\n", |
| cur_reg_start, i-1, mc_route_string); |
| cur_reg_start = i; |
| } |
| } |
| knl_show_mc_route(mc_route_reg[i-1], mc_route_string); |
| if (cur_reg_start == i-1) |
| edac_dbg(0, "mc route table for CHA %d: %s\n", |
| cur_reg_start, mc_route_string); |
| else |
| edac_dbg(0, "mc route table for CHA %d-%d: %s\n", |
| cur_reg_start, i-1, mc_route_string); |
| |
| /* Process DRAM rules */ |
| for (sad_rule = 0; sad_rule < pvt->info.max_sad; sad_rule++) { |
| /* previous limit becomes the new base */ |
| sad_base = sad_limit; |
| |
| pci_read_config_dword(pvt->pci_sad0, |
| pvt->info.dram_rule[sad_rule], &dram_rule); |
| |
| if (!DRAM_RULE_ENABLE(dram_rule)) |
| break; |
| |
| edram_only = KNL_EDRAM_ONLY(dram_rule); |
| |
| sad_limit = pvt->info.sad_limit(dram_rule)+1; |
| sad_size = sad_limit - sad_base; |
| |
| pci_read_config_dword(pvt->pci_sad0, |
| pvt->info.interleave_list[sad_rule], &interleave_reg); |
| |
| /* |
| * Find out how many ways this dram rule is interleaved. |
| * We stop when we see the first channel again. |
| */ |
| first_pkg = sad_pkg(pvt->info.interleave_pkg, |
| interleave_reg, 0); |
| for (intrlv_ways = 1; intrlv_ways < 8; intrlv_ways++) { |
| pkg = sad_pkg(pvt->info.interleave_pkg, |
| interleave_reg, intrlv_ways); |
| |
| if ((pkg & 0x8) == 0) { |
| /* |
| * 0 bit means memory is non-local, |
| * which KNL doesn't support |
| */ |
| edac_dbg(0, "Unexpected interleave target %d\n", |
| pkg); |
| return -1; |
| } |
| |
| if (pkg == first_pkg) |
| break; |
| } |
| if (KNL_MOD3(dram_rule)) |
| intrlv_ways *= 3; |
| |
| edac_dbg(3, "dram rule %d (base 0x%llx, limit 0x%llx), %d way interleave%s\n", |
| sad_rule, |
| sad_base, |
| sad_limit, |
| intrlv_ways, |
| edram_only ? ", EDRAM" : ""); |
| |
| /* |
| * Find out how big the SAD region really is by iterating |
| * over TAD tables (SAD regions may contain holes). |
| * Each memory controller might have a different TAD table, so |
| * we have to look at both. |
| * |
| * Livespace is the memory that's mapped in this TAD table, |
| * deadspace is the holes (this could be the MMIO hole, or it |
| * could be memory that's mapped by the other TAD table but |
| * not this one). |
| */ |
| for (mc = 0; mc < 2; mc++) { |
| sad_actual_size[mc] = 0; |
| tad_livespace = 0; |
| for (tad_rule = 0; |
| tad_rule < ARRAY_SIZE( |
| knl_tad_dram_limit_lo); |
| tad_rule++) { |
| if (knl_get_tad(pvt, |
| tad_rule, |
| mc, |
| &tad_deadspace, |
| &tad_limit, |
| &tad_ways)) |
| break; |
| |
| tad_size = (tad_limit+1) - |
| (tad_livespace + tad_deadspace); |
| tad_livespace += tad_size; |
| tad_base = (tad_limit+1) - tad_size; |
| |
| if (tad_base < sad_base) { |
| if (tad_limit > sad_base) |
| edac_dbg(0, "TAD region overlaps lower SAD boundary -- TAD tables may be configured incorrectly.\n"); |
| } else if (tad_base < sad_limit) { |
| if (tad_limit+1 > sad_limit) { |
| edac_dbg(0, "TAD region overlaps upper SAD boundary -- TAD tables may be configured incorrectly.\n"); |
| } else { |
| /* TAD region is completely inside SAD region */ |
| edac_dbg(3, "TAD region %d 0x%llx - 0x%llx (%lld bytes) table%d\n", |
| tad_rule, tad_base, |
| tad_limit, tad_size, |
| mc); |
| sad_actual_size[mc] += tad_size; |
| } |
| } |
| tad_base = tad_limit+1; |
| } |
| } |
| |
| for (mc = 0; mc < 2; mc++) { |
| edac_dbg(3, " total TAD DRAM footprint in table%d : 0x%llx (%lld bytes)\n", |
| mc, sad_actual_size[mc], sad_actual_size[mc]); |
| } |
| |
| /* Ignore EDRAM rule */ |
| if (edram_only) |
| continue; |
| |
| /* Figure out which channels participate in interleave. */ |
| for (channel = 0; channel < KNL_MAX_CHANNELS; channel++) |
| participants[channel] = 0; |
| |
| /* For each channel, does at least one CHA have |
| * this channel mapped to the given target? |
| */ |
| for (channel = 0; channel < KNL_MAX_CHANNELS; channel++) { |
| for (way = 0; way < intrlv_ways; way++) { |
| int target; |
| int cha; |
| |
| if (KNL_MOD3(dram_rule)) |
| target = way; |
| else |
| target = 0x7 & sad_pkg( |
| pvt->info.interleave_pkg, interleave_reg, way); |
| |
| for (cha = 0; cha < KNL_MAX_CHAS; cha++) { |
| if (knl_get_mc_route(target, |
| mc_route_reg[cha]) == channel |
| && !participants[channel]) { |
| participant_count++; |
| participants[channel] = 1; |
| break; |
| } |
| } |
| } |
| } |
| |
| if (participant_count != intrlv_ways) |
| edac_dbg(0, "participant_count (%d) != interleave_ways (%d): DIMM size may be incorrect\n", |
| participant_count, intrlv_ways); |
| |
| for (channel = 0; channel < KNL_MAX_CHANNELS; channel++) { |
| mc = knl_channel_mc(channel); |
| if (participants[channel]) { |
| edac_dbg(4, "mc channel %d contributes %lld bytes via sad entry %d\n", |
| channel, |
| sad_actual_size[mc]/intrlv_ways, |
| sad_rule); |
| mc_sizes[channel] += |
| sad_actual_size[mc]/intrlv_ways; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int get_dimm_config(struct mem_ctl_info *mci) |
| { |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| struct dimm_info *dimm; |
| unsigned i, j, banks, ranks, rows, cols, npages; |
| u64 size; |
| u32 reg; |
| enum edac_type mode; |
| enum mem_type mtype; |
| int channels = pvt->info.type == KNIGHTS_LANDING ? |
| KNL_MAX_CHANNELS : NUM_CHANNELS; |
| u64 knl_mc_sizes[KNL_MAX_CHANNELS]; |
| |
| if (pvt->info.type == HASWELL || pvt->info.type == BROADWELL || |
| pvt->info.type == KNIGHTS_LANDING) |
| pci_read_config_dword(pvt->pci_sad1, SAD_TARGET, ®); |
| else |
| pci_read_config_dword(pvt->pci_br0, SAD_TARGET, ®); |
| |
| if (pvt->info.type == KNIGHTS_LANDING) |
| pvt->sbridge_dev->source_id = SOURCE_ID_KNL(reg); |
| else |
| pvt->sbridge_dev->source_id = SOURCE_ID(reg); |
| |
| pvt->sbridge_dev->node_id = pvt->info.get_node_id(pvt); |
| edac_dbg(0, "mc#%d: Node ID: %d, source ID: %d\n", |
| pvt->sbridge_dev->mc, |
| pvt->sbridge_dev->node_id, |
| pvt->sbridge_dev->source_id); |
| |
| /* KNL doesn't support mirroring or lockstep, |
| * and is always closed page |
| */ |
| if (pvt->info.type == KNIGHTS_LANDING) { |
| mode = EDAC_S4ECD4ED; |
| pvt->is_mirrored = false; |
| |
| if (knl_get_dimm_capacity(pvt, knl_mc_sizes) != 0) |
| return -1; |
| } else { |
| pci_read_config_dword(pvt->pci_ras, RASENABLES, ®); |
| if (IS_MIRROR_ENABLED(reg)) { |
| edac_dbg(0, "Memory mirror is enabled\n"); |
| pvt->is_mirrored = true; |
| } else { |
| edac_dbg(0, "Memory mirror is disabled\n"); |
| pvt->is_mirrored = false; |
| } |
| |
| pci_read_config_dword(pvt->pci_ta, MCMTR, &pvt->info.mcmtr); |
| if (IS_LOCKSTEP_ENABLED(pvt->info.mcmtr)) { |
| edac_dbg(0, "Lockstep is enabled\n"); |
| mode = EDAC_S8ECD8ED; |
| pvt->is_lockstep = true; |
| } else { |
| edac_dbg(0, "Lockstep is disabled\n"); |
| mode = EDAC_S4ECD4ED; |
| pvt->is_lockstep = false; |
| } |
| if (IS_CLOSE_PG(pvt->info.mcmtr)) { |
| edac_dbg(0, "address map is on closed page mode\n"); |
| pvt->is_close_pg = true; |
| } else { |
| edac_dbg(0, "address map is on open page mode\n"); |
| pvt->is_close_pg = false; |
| } |
| } |
| |
| mtype = pvt->info.get_memory_type(pvt); |
| if (mtype == MEM_RDDR3 || mtype == MEM_RDDR4) |
| edac_dbg(0, "Memory is registered\n"); |
| else if (mtype == MEM_UNKNOWN) |
| edac_dbg(0, "Cannot determine memory type\n"); |
| else |
| edac_dbg(0, "Memory is unregistered\n"); |
| |
| if (mtype == MEM_DDR4 || mtype == MEM_RDDR4) |
| banks = 16; |
| else |
| banks = 8; |
| |
| for (i = 0; i < channels; i++) { |
| u32 mtr; |
| |
| int max_dimms_per_channel; |
| |
| if (pvt->info.type == KNIGHTS_LANDING) { |
| max_dimms_per_channel = 1; |
| if (!pvt->knl.pci_channel[i]) |
| continue; |
| } else { |
| max_dimms_per_channel = ARRAY_SIZE(mtr_regs); |
| if (!pvt->pci_tad[i]) |
| continue; |
| } |
| |
| for (j = 0; j < max_dimms_per_channel; j++) { |
| dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers, |
| i, j, 0); |
| if (pvt->info.type == KNIGHTS_LANDING) { |
| pci_read_config_dword(pvt->knl.pci_channel[i], |
| knl_mtr_reg, &mtr); |
| } else { |
| pci_read_config_dword(pvt->pci_tad[i], |
| mtr_regs[j], &mtr); |
| } |
| edac_dbg(4, "Channel #%d MTR%d = %x\n", i, j, mtr); |
| if (IS_DIMM_PRESENT(mtr)) { |
| pvt->channel[i].dimms++; |
| |
| ranks = numrank(pvt->info.type, mtr); |
| |
| if (pvt->info.type == KNIGHTS_LANDING) { |
| /* For DDR4, this is fixed. */ |
| cols = 1 << 10; |
| rows = knl_mc_sizes[i] / |
| ((u64) cols * ranks * banks * 8); |
| } else { |
| rows = numrow(mtr); |
| cols = numcol(mtr); |
| } |
| |
| size = ((u64)rows * cols * banks * ranks) >> (20 - 3); |
| npages = MiB_TO_PAGES(size); |
| |
| edac_dbg(0, "mc#%d: ha %d channel %d, dimm %d, %lld Mb (%d pages) bank: %d, rank: %d, row: %#x, col: %#x\n", |
| pvt->sbridge_dev->mc, i/4, i%4, j, |
| size, npages, |
| banks, ranks, rows, cols); |
| |
| dimm->nr_pages = npages; |
| dimm->grain = 32; |
| dimm->dtype = pvt->info.get_width(pvt, mtr); |
| dimm->mtype = mtype; |
| dimm->edac_mode = mode; |
| snprintf(dimm->label, sizeof(dimm->label), |
| "CPU_SrcID#%u_Ha#%u_Chan#%u_DIMM#%u", |
| pvt->sbridge_dev->source_id, i/4, i%4, j); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void get_memory_layout(const struct mem_ctl_info *mci) |
| { |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| int i, j, k, n_sads, n_tads, sad_interl; |
| u32 reg; |
| u64 limit, prv = 0; |
| u64 tmp_mb; |
| u32 gb, mb; |
| u32 rir_way; |
| |
| /* |
| * Step 1) Get TOLM/TOHM ranges |
| */ |
| |
| pvt->tolm = pvt->info.get_tolm(pvt); |
| tmp_mb = (1 + pvt->tolm) >> 20; |
| |
| gb = div_u64_rem(tmp_mb, 1024, &mb); |
| edac_dbg(0, "TOLM: %u.%03u GB (0x%016Lx)\n", |
| gb, (mb*1000)/1024, (u64)pvt->tolm); |
| |
| /* Address range is already 45:25 */ |
| pvt->tohm = pvt->info.get_tohm(pvt); |
| tmp_mb = (1 + pvt->tohm) >> 20; |
| |
| gb = div_u64_rem(tmp_mb, 1024, &mb); |
| edac_dbg(0, "TOHM: %u.%03u GB (0x%016Lx)\n", |
| gb, (mb*1000)/1024, (u64)pvt->tohm); |
| |
| /* |
| * Step 2) Get SAD range and SAD Interleave list |
| * TAD registers contain the interleave wayness. However, it |
| * seems simpler to just discover it indirectly, with the |
| * algorithm bellow. |
| */ |
| prv = 0; |
| for (n_sads = 0; n_sads < pvt->info.max_sad; n_sads++) { |
| /* SAD_LIMIT Address range is 45:26 */ |
| pci_read_config_dword(pvt->pci_sad0, pvt->info.dram_rule[n_sads], |
| ®); |
| limit = pvt->info.sad_limit(reg); |
| |
| if (!DRAM_RULE_ENABLE(reg)) |
| continue; |
| |
| if (limit <= prv) |
| break; |
| |
| tmp_mb = (limit + 1) >> 20; |
| gb = div_u64_rem(tmp_mb, 1024, &mb); |
| edac_dbg(0, "SAD#%d %s up to %u.%03u GB (0x%016Lx) Interleave: %s reg=0x%08x\n", |
| n_sads, |
| show_dram_attr(pvt->info.dram_attr(reg)), |
| gb, (mb*1000)/1024, |
| ((u64)tmp_mb) << 20L, |
| pvt->info.show_interleave_mode(reg), |
| reg); |
| prv = limit; |
| |
| pci_read_config_dword(pvt->pci_sad0, pvt->info.interleave_list[n_sads], |
| ®); |
| sad_interl = sad_pkg(pvt->info.interleave_pkg, reg, 0); |
| for (j = 0; j < 8; j++) { |
| u32 pkg = sad_pkg(pvt->info.interleave_pkg, reg, j); |
| if (j > 0 && sad_interl == pkg) |
| break; |
| |
| edac_dbg(0, "SAD#%d, interleave #%d: %d\n", |
| n_sads, j, pkg); |
| } |
| } |
| |
| if (pvt->info.type == KNIGHTS_LANDING) |
| return; |
| |
| /* |
| * Step 3) Get TAD range |
| */ |
| prv = 0; |
| for (n_tads = 0; n_tads < MAX_TAD; n_tads++) { |
| pci_read_config_dword(pvt->pci_ha0, tad_dram_rule[n_tads], |
| ®); |
| limit = TAD_LIMIT(reg); |
| if (limit <= prv) |
| break; |
| tmp_mb = (limit + 1) >> 20; |
| |
| gb = div_u64_rem(tmp_mb, 1024, &mb); |
| edac_dbg(0, "TAD#%d: up to %u.%03u GB (0x%016Lx), socket interleave %d, memory interleave %d, TGT: %d, %d, %d, %d, reg=0x%08x\n", |
| n_tads, gb, (mb*1000)/1024, |
| ((u64)tmp_mb) << 20L, |
| (u32)TAD_SOCK(reg), |
| (u32)TAD_CH(reg), |
| (u32)TAD_TGT0(reg), |
| (u32)TAD_TGT1(reg), |
| (u32)TAD_TGT2(reg), |
| (u32)TAD_TGT3(reg), |
| reg); |
| prv = limit; |
| } |
| |
| /* |
| * Step 4) Get TAD offsets, per each channel |
| */ |
| for (i = 0; i < NUM_CHANNELS; i++) { |
| if (!pvt->channel[i].dimms) |
| continue; |
| for (j = 0; j < n_tads; j++) { |
| pci_read_config_dword(pvt->pci_tad[i], |
| tad_ch_nilv_offset[j], |
| ®); |
| tmp_mb = TAD_OFFSET(reg) >> 20; |
| gb = div_u64_rem(tmp_mb, 1024, &mb); |
| edac_dbg(0, "TAD CH#%d, offset #%d: %u.%03u GB (0x%016Lx), reg=0x%08x\n", |
| i, j, |
| gb, (mb*1000)/1024, |
| ((u64)tmp_mb) << 20L, |
| reg); |
| } |
| } |
| |
| /* |
| * Step 6) Get RIR Wayness/Limit, per each channel |
| */ |
| for (i = 0; i < NUM_CHANNELS; i++) { |
| if (!pvt->channel[i].dimms) |
| continue; |
| for (j = 0; j < MAX_RIR_RANGES; j++) { |
| pci_read_config_dword(pvt->pci_tad[i], |
| rir_way_limit[j], |
| ®); |
| |
| if (!IS_RIR_VALID(reg)) |
| continue; |
| |
| tmp_mb = pvt->info.rir_limit(reg) >> 20; |
| rir_way = 1 << RIR_WAY(reg); |
| gb = div_u64_rem(tmp_mb, 1024, &mb); |
| edac_dbg(0, "CH#%d RIR#%d, limit: %u.%03u GB (0x%016Lx), way: %d, reg=0x%08x\n", |
| i, j, |
| gb, (mb*1000)/1024, |
| ((u64)tmp_mb) << 20L, |
| rir_way, |
| reg); |
| |
| for (k = 0; k < rir_way; k++) { |
| pci_read_config_dword(pvt->pci_tad[i], |
| rir_offset[j][k], |
| ®); |
| tmp_mb = RIR_OFFSET(reg) << 6; |
| |
| gb = div_u64_rem(tmp_mb, 1024, &mb); |
| edac_dbg(0, "CH#%d RIR#%d INTL#%d, offset %u.%03u GB (0x%016Lx), tgt: %d, reg=0x%08x\n", |
| i, j, k, |
| gb, (mb*1000)/1024, |
| ((u64)tmp_mb) << 20L, |
| (u32)RIR_RNK_TGT(reg), |
| reg); |
| } |
| } |
| } |
| } |
| |
| static struct mem_ctl_info *get_mci_for_node_id(u8 node_id) |
| { |
| struct sbridge_dev *sbridge_dev; |
| |
| list_for_each_entry(sbridge_dev, &sbridge_edac_list, list) { |
| if (sbridge_dev->node_id == node_id) |
| return sbridge_dev->mci; |
| } |
| return NULL; |
| } |
| |
| static int get_memory_error_data(struct mem_ctl_info *mci, |
| u64 addr, |
| u8 *socket, u8 *ha, |
| long *channel_mask, |
| u8 *rank, |
| char **area_type, char *msg) |
| { |
| struct mem_ctl_info *new_mci; |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| struct pci_dev *pci_ha; |
| int n_rir, n_sads, n_tads, sad_way, sck_xch; |
| int sad_interl, idx, base_ch; |
| int interleave_mode, shiftup = 0; |
| unsigned sad_interleave[pvt->info.max_interleave]; |
| u32 reg, dram_rule; |
| u8 ch_way, sck_way, pkg, sad_ha = 0, ch_add = 0; |
| u32 tad_offset; |
| u32 rir_way; |
| u32 mb, gb; |
| u64 ch_addr, offset, limit = 0, prv = 0; |
| |
| |
| /* |
| * Step 0) Check if the address is at special memory ranges |
| * The check bellow is probably enough to fill all cases where |
| * the error is not inside a memory, except for the legacy |
| * range (e. g. VGA addresses). It is unlikely, however, that the |
| * memory controller would generate an error on that range. |
| */ |
| if ((addr > (u64) pvt->tolm) && (addr < (1LL << 32))) { |
| sprintf(msg, "Error at TOLM area, on addr 0x%08Lx", addr); |
| return -EINVAL; |
| } |
| if (addr >= (u64)pvt->tohm) { |
| sprintf(msg, "Error at MMIOH area, on addr 0x%016Lx", addr); |
| return -EINVAL; |
| } |
| |
| /* |
| * Step 1) Get socket |
| */ |
| for (n_sads = 0; n_sads < pvt->info.max_sad; n_sads++) { |
| pci_read_config_dword(pvt->pci_sad0, pvt->info.dram_rule[n_sads], |
| ®); |
| |
| if (!DRAM_RULE_ENABLE(reg)) |
| continue; |
| |
| limit = pvt->info.sad_limit(reg); |
| if (limit <= prv) { |
| sprintf(msg, "Can't discover the memory socket"); |
| return -EINVAL; |
| } |
| if (addr <= limit) |
| break; |
| prv = limit; |
| } |
| if (n_sads == pvt->info.max_sad) { |
| sprintf(msg, "Can't discover the memory socket"); |
| return -EINVAL; |
| } |
| dram_rule = reg; |
| *area_type = show_dram_attr(pvt->info.dram_attr(dram_rule)); |
| interleave_mode = pvt->info.interleave_mode(dram_rule); |
| |
| pci_read_config_dword(pvt->pci_sad0, pvt->info.interleave_list[n_sads], |
| ®); |
| |
| if (pvt->info.type == SANDY_BRIDGE) { |
| sad_interl = sad_pkg(pvt->info.interleave_pkg, reg, 0); |
| for (sad_way = 0; sad_way < 8; sad_way++) { |
| u32 pkg = sad_pkg(pvt->info.interleave_pkg, reg, sad_way); |
| if (sad_way > 0 && sad_interl == pkg) |
| break; |
| sad_interleave[sad_way] = pkg; |
| edac_dbg(0, "SAD interleave #%d: %d\n", |
| sad_way, sad_interleave[sad_way]); |
| } |
| edac_dbg(0, "mc#%d: Error detected on SAD#%d: address 0x%016Lx < 0x%016Lx, Interleave [%d:6]%s\n", |
| pvt->sbridge_dev->mc, |
| n_sads, |
| addr, |
| limit, |
| sad_way + 7, |
| !interleave_mode ? "" : "XOR[18:16]"); |
| if (interleave_mode) |
| idx = ((addr >> 6) ^ (addr >> 16)) & 7; |
| else |
| idx = (addr >> 6) & 7; |
| switch (sad_way) { |
| case 1: |
| idx = 0; |
| break; |
| case 2: |
| idx = idx & 1; |
| break; |
| case 4: |
| idx = idx & 3; |
| break; |
| case 8: |
| break; |
| default: |
| sprintf(msg, "Can't discover socket interleave"); |
| return -EINVAL; |
| } |
| *socket = sad_interleave[idx]; |
| edac_dbg(0, "SAD interleave index: %d (wayness %d) = CPU socket %d\n", |
| idx, sad_way, *socket); |
| } else if (pvt->info.type == HASWELL || pvt->info.type == BROADWELL) { |
| int bits, a7mode = A7MODE(dram_rule); |
| |
| if (a7mode) { |
| /* A7 mode swaps P9 with P6 */ |
| bits = GET_BITFIELD(addr, 7, 8) << 1; |
| bits |= GET_BITFIELD(addr, 9, 9); |
| } else |
| bits = GET_BITFIELD(addr, 6, 8); |
| |
| if (interleave_mode == 0) { |
| /* interleave mode will XOR {8,7,6} with {18,17,16} */ |
| idx = GET_BITFIELD(addr, 16, 18); |
| idx ^= bits; |
| } else |
| idx = bits; |
| |
| pkg = sad_pkg(pvt->info.interleave_pkg, reg, idx); |
| *socket = sad_pkg_socket(pkg); |
| sad_ha = sad_pkg_ha(pkg); |
| if (sad_ha) |
| ch_add = 4; |
| |
| if (a7mode) { |
| /* MCChanShiftUpEnable */ |
| pci_read_config_dword(pvt->pci_ha0, |
| HASWELL_HASYSDEFEATURE2, ®); |
| shiftup = GET_BITFIELD(reg, 22, 22); |
| } |
| |
| edac_dbg(0, "SAD interleave package: %d = CPU socket %d, HA %i, shiftup: %i\n", |
| idx, *socket, sad_ha, shiftup); |
| } else { |
| /* Ivy Bridge's SAD mode doesn't support XOR interleave mode */ |
| idx = (addr >> 6) & 7; |
| pkg = sad_pkg(pvt->info.interleave_pkg, reg, idx); |
| *socket = sad_pkg_socket(pkg); |
| sad_ha = sad_pkg_ha(pkg); |
| if (sad_ha) |
| ch_add = 4; |
| edac_dbg(0, "SAD interleave package: %d = CPU socket %d, HA %d\n", |
| idx, *socket, sad_ha); |
| } |
| |
| *ha = sad_ha; |
| |
| /* |
| * Move to the proper node structure, in order to access the |
| * right PCI registers |
| */ |
| new_mci = get_mci_for_node_id(*socket); |
| if (!new_mci) { |
| sprintf(msg, "Struct for socket #%u wasn't initialized", |
| *socket); |
| return -EINVAL; |
| } |
| mci = new_mci; |
| pvt = mci->pvt_info; |
| |
| /* |
| * Step 2) Get memory channel |
| */ |
| prv = 0; |
| if (pvt->info.type == SANDY_BRIDGE) |
| pci_ha = pvt->pci_ha0; |
| else { |
| if (sad_ha) |
| pci_ha = pvt->pci_ha1; |
| else |
| pci_ha = pvt->pci_ha0; |
| } |
| for (n_tads = 0; n_tads < MAX_TAD; n_tads++) { |
| pci_read_config_dword(pci_ha, tad_dram_rule[n_tads], ®); |
| limit = TAD_LIMIT(reg); |
| if (limit <= prv) { |
| sprintf(msg, "Can't discover the memory channel"); |
| return -EINVAL; |
| } |
| if (addr <= limit) |
| break; |
| prv = limit; |
| } |
| if (n_tads == MAX_TAD) { |
| sprintf(msg, "Can't discover the memory channel"); |
| return -EINVAL; |
| } |
| |
| ch_way = TAD_CH(reg) + 1; |
| sck_way = TAD_SOCK(reg) + 1; |
| |
| if (ch_way == 3) |
| idx = addr >> 6; |
| else |
| idx = (addr >> (6 + sck_way + shiftup)) & 0x3; |
| idx = idx % ch_way; |
| |
| /* |
| * FIXME: Shouldn't we use CHN_IDX_OFFSET() here, when ch_way == 3 ??? |
| */ |
| switch (idx) { |
| case 0: |
| base_ch = TAD_TGT0(reg); |
| break; |
| case 1: |
| base_ch = TAD_TGT1(reg); |
| break; |
| case 2: |
| base_ch = TAD_TGT2(reg); |
| break; |
| case 3: |
| base_ch = TAD_TGT3(reg); |
| break; |
| default: |
| sprintf(msg, "Can't discover the TAD target"); |
| return -EINVAL; |
| } |
| *channel_mask = 1 << base_ch; |
| |
| pci_read_config_dword(pvt->pci_tad[ch_add + base_ch], |
| tad_ch_nilv_offset[n_tads], |
| &tad_offset); |
| |
| if (pvt->is_mirrored) { |
| *channel_mask |= 1 << ((base_ch + 2) % 4); |
| switch(ch_way) { |
| case 2: |
| case 4: |
| sck_xch = 1 << sck_way * (ch_way >> 1); |
| break; |
| default: |
| sprintf(msg, "Invalid mirror set. Can't decode addr"); |
| return -EINVAL; |
| } |
| } else |
| sck_xch = (1 << sck_way) * ch_way; |
| |
| if (pvt->is_lockstep) |
| *channel_mask |= 1 << ((base_ch + 1) % 4); |
| |
| offset = TAD_OFFSET(tad_offset); |
| |
| edac_dbg(0, "TAD#%d: address 0x%016Lx < 0x%016Lx, socket interleave %d, channel interleave %d (offset 0x%08Lx), index %d, base ch: %d, ch mask: 0x%02lx\n", |
| n_tads, |
| addr, |
| limit, |
| (u32)TAD_SOCK(reg), |
| ch_way, |
| offset, |
| idx, |
| base_ch, |
| *channel_mask); |
| |
| /* Calculate channel address */ |
| /* Remove the TAD offset */ |
| |
| if (offset > addr) { |
| sprintf(msg, "Can't calculate ch addr: TAD offset 0x%08Lx is too high for addr 0x%08Lx!", |
| offset, addr); |
| return -EINVAL; |
| } |
| addr -= offset; |
| /* Store the low bits [0:6] of the addr */ |
| ch_addr = addr & 0x7f; |
| /* Remove socket wayness and remove 6 bits */ |
| addr >>= 6; |
| addr = div_u64(addr, sck_xch); |
| #if 0 |
| /* Divide by channel way */ |
| addr = addr / ch_way; |
| #endif |
| /* Recover the last 6 bits */ |
| ch_addr |= addr << 6; |
| |
| /* |
| * Step 3) Decode rank |
| */ |
| for (n_rir = 0; n_rir < MAX_RIR_RANGES; n_rir++) { |
| pci_read_config_dword(pvt->pci_tad[ch_add + base_ch], |
| rir_way_limit[n_rir], |
| ®); |
| |
| if (!IS_RIR_VALID(reg)) |
| continue; |
| |
| limit = pvt->info.rir_limit(reg); |
| gb = div_u64_rem(limit >> 20, 1024, &mb); |
| edac_dbg(0, "RIR#%d, limit: %u.%03u GB (0x%016Lx), way: %d\n", |
| n_rir, |
| gb, (mb*1000)/1024, |
| limit, |
| 1 << RIR_WAY(reg)); |
| if (ch_addr <= limit) |
| break; |
| } |
| if (n_rir == MAX_RIR_RANGES) { |
| sprintf(msg, "Can't discover the memory rank for ch addr 0x%08Lx", |
| ch_addr); |
| return -EINVAL; |
| } |
| rir_way = RIR_WAY(reg); |
| |
| if (pvt->is_close_pg) |
| idx = (ch_addr >> 6); |
| else |
| idx = (ch_addr >> 13); /* FIXME: Datasheet says to shift by 15 */ |
| idx %= 1 << rir_way; |
| |
| pci_read_config_dword(pvt->pci_tad[ch_add + base_ch], |
| rir_offset[n_rir][idx], |
| ®); |
| *rank = RIR_RNK_TGT(reg); |
| |
| edac_dbg(0, "RIR#%d: channel address 0x%08Lx < 0x%08Lx, RIR interleave %d, index %d\n", |
| n_rir, |
| ch_addr, |
| limit, |
| rir_way, |
| idx); |
| |
| return 0; |
| } |
| |
| /**************************************************************************** |
| Device initialization routines: put/get, init/exit |
| ****************************************************************************/ |
| |
| /* |
| * sbridge_put_all_devices 'put' all the devices that we have |
| * reserved via 'get' |
| */ |
| static void sbridge_put_devices(struct sbridge_dev *sbridge_dev) |
| { |
| int i; |
| |
| edac_dbg(0, "\n"); |
| for (i = 0; i < sbridge_dev->n_devs; i++) { |
| struct pci_dev *pdev = sbridge_dev->pdev[i]; |
| if (!pdev) |
| continue; |
| edac_dbg(0, "Removing dev %02x:%02x.%d\n", |
| pdev->bus->number, |
| PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); |
| pci_dev_put(pdev); |
| } |
| } |
| |
| static void sbridge_put_all_devices(void) |
| { |
| struct sbridge_dev *sbridge_dev, *tmp; |
| |
| list_for_each_entry_safe(sbridge_dev, tmp, &sbridge_edac_list, list) { |
| sbridge_put_devices(sbridge_dev); |
| free_sbridge_dev(sbridge_dev); |
| } |
| } |
| |
| static int sbridge_get_onedevice(struct pci_dev **prev, |
| u8 *num_mc, |
| const struct pci_id_table *table, |
| const unsigned devno, |
| const int multi_bus) |
| { |
| struct sbridge_dev *sbridge_dev; |
| const struct pci_id_descr *dev_descr = &table->descr[devno]; |
| struct pci_dev *pdev = NULL; |
| u8 bus = 0; |
| |
| sbridge_printk(KERN_DEBUG, |
| "Seeking for: PCI ID %04x:%04x\n", |
| PCI_VENDOR_ID_INTEL, dev_descr->dev_id); |
| |
| pdev = pci_get_device(PCI_VENDOR_ID_INTEL, |
| dev_descr->dev_id, *prev); |
| |
| if (!pdev) { |
| if (*prev) { |
| *prev = pdev; |
| return 0; |
| } |
| |
| if (dev_descr->optional) |
| return 0; |
| |
| /* if the HA wasn't found */ |
| if (devno == 0) |
| return -ENODEV; |
| |
| sbridge_printk(KERN_INFO, |
| "Device not found: %04x:%04x\n", |
| PCI_VENDOR_ID_INTEL, dev_descr->dev_id); |
| |
| /* End of list, leave */ |
| return -ENODEV; |
| } |
| bus = pdev->bus->number; |
| |
| sbridge_dev = get_sbridge_dev(bus, multi_bus); |
| if (!sbridge_dev) { |
| sbridge_dev = alloc_sbridge_dev(bus, table); |
| if (!sbridge_dev) { |
| pci_dev_put(pdev); |
| return -ENOMEM; |
| } |
| (*num_mc)++; |
| } |
| |
| if (sbridge_dev->pdev[devno]) { |
| sbridge_printk(KERN_ERR, |
| "Duplicated device for %04x:%04x\n", |
| PCI_VENDOR_ID_INTEL, dev_descr->dev_id); |
| pci_dev_put(pdev); |
| return -ENODEV; |
| } |
| |
| sbridge_dev->pdev[devno] = pdev; |
| |
| /* Be sure that the device is enabled */ |
| if (unlikely(pci_enable_device(pdev) < 0)) { |
| sbridge_printk(KERN_ERR, |
| "Couldn't enable %04x:%04x\n", |
| PCI_VENDOR_ID_INTEL, dev_descr->dev_id); |
| return -ENODEV; |
| } |
| |
| edac_dbg(0, "Detected %04x:%04x\n", |
| PCI_VENDOR_ID_INTEL, dev_descr->dev_id); |
| |
| /* |
| * As stated on drivers/pci/search.c, the reference count for |
| * @from is always decremented if it is not %NULL. So, as we need |
| * to get all devices up to null, we need to do a get for the device |
| */ |
| pci_dev_get(pdev); |
| |
| *prev = pdev; |
| |
| return 0; |
| } |
| |
| /* |
| * sbridge_get_all_devices - Find and perform 'get' operation on the MCH's |
| * devices we want to reference for this driver. |
| * @num_mc: pointer to the memory controllers count, to be incremented in case |
| * of success. |
| * @table: model specific table |
| * @allow_dups: allow for multiple devices to exist with the same device id |
| * (as implemented, this isn't expected to work correctly in the |
| * multi-socket case). |
| * @multi_bus: don't assume devices on different buses belong to different |
| * memory controllers. |
| * |
| * returns 0 in case of success or error code |
| */ |
| static int sbridge_get_all_devices_full(u8 *num_mc, |
| const struct pci_id_table *table, |
| int allow_dups, |
| int multi_bus) |
| { |
| int i, rc; |
| struct pci_dev *pdev = NULL; |
| |
| while (table && table->descr) { |
| for (i = 0; i < table->n_devs; i++) { |
| if (!allow_dups || i == 0 || |
| table->descr[i].dev_id != |
| table->descr[i-1].dev_id) { |
| pdev = NULL; |
| } |
| do { |
| rc = sbridge_get_onedevice(&pdev, num_mc, |
| table, i, multi_bus); |
| if (rc < 0) { |
| if (i == 0) { |
| i = table->n_devs; |
| break; |
| } |
| sbridge_put_all_devices(); |
| return -ENODEV; |
| } |
| } while (pdev && !allow_dups); |
| } |
| table++; |
| } |
| |
| return 0; |
| } |
| |
| #define sbridge_get_all_devices(num_mc, table) \ |
| sbridge_get_all_devices_full(num_mc, table, 0, 0) |
| #define sbridge_get_all_devices_knl(num_mc, table) \ |
| sbridge_get_all_devices_full(num_mc, table, 1, 1) |
| |
| static int sbridge_mci_bind_devs(struct mem_ctl_info *mci, |
| struct sbridge_dev *sbridge_dev) |
| { |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| struct pci_dev *pdev; |
| u8 saw_chan_mask = 0; |
| int i; |
| |
| for (i = 0; i < sbridge_dev->n_devs; i++) { |
| pdev = sbridge_dev->pdev[i]; |
| if (!pdev) |
| continue; |
| |
| switch (pdev->device) { |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_SAD0: |
| pvt->pci_sad0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_SAD1: |
| pvt->pci_sad1 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_BR: |
| pvt->pci_br0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0: |
| pvt->pci_ha0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA: |
| pvt->pci_ta = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_RAS: |
| pvt->pci_ras = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0: |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD1: |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD2: |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD3: |
| { |
| int id = pdev->device - PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0; |
| pvt->pci_tad[id] = pdev; |
| saw_chan_mask |= 1 << id; |
| } |
| break; |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_DDRIO: |
| pvt->pci_ddrio = pdev; |
| break; |
| default: |
| goto error; |
| } |
| |
| edac_dbg(0, "Associated PCI %02x:%02x, bus %d with dev = %p\n", |
| pdev->vendor, pdev->device, |
| sbridge_dev->bus, |
| pdev); |
| } |
| |
| /* Check if everything were registered */ |
| if (!pvt->pci_sad0 || !pvt->pci_sad1 || !pvt->pci_ha0 || |
| !pvt-> pci_tad || !pvt->pci_ras || !pvt->pci_ta) |
| goto enodev; |
| |
| if (saw_chan_mask != 0x0f) |
| goto enodev; |
| return 0; |
| |
| enodev: |
| sbridge_printk(KERN_ERR, "Some needed devices are missing\n"); |
| return -ENODEV; |
| |
| error: |
| sbridge_printk(KERN_ERR, "Unexpected device %02x:%02x\n", |
| PCI_VENDOR_ID_INTEL, pdev->device); |
| return -EINVAL; |
| } |
| |
| static int ibridge_mci_bind_devs(struct mem_ctl_info *mci, |
| struct sbridge_dev *sbridge_dev) |
| { |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| struct pci_dev *pdev; |
| u8 saw_chan_mask = 0; |
| int i; |
| |
| for (i = 0; i < sbridge_dev->n_devs; i++) { |
| pdev = sbridge_dev->pdev[i]; |
| if (!pdev) |
| continue; |
| |
| switch (pdev->device) { |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0: |
| pvt->pci_ha0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA: |
| pvt->pci_ta = pdev; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS: |
| pvt->pci_ras = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0: |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD1: |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD2: |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD3: |
| { |
| int id = pdev->device - PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0; |
| pvt->pci_tad[id] = pdev; |
| saw_chan_mask |= 1 << id; |
| } |
| break; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_2HA_DDRIO0: |
| pvt->pci_ddrio = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_1HA_DDRIO0: |
| pvt->pci_ddrio = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_SAD: |
| pvt->pci_sad0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_BR0: |
| pvt->pci_br0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_BR1: |
| pvt->pci_br1 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1: |
| pvt->pci_ha1 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0: |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD1: |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD2: |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD3: |
| { |
| int id = pdev->device - PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0 + 4; |
| pvt->pci_tad[id] = pdev; |
| saw_chan_mask |= 1 << id; |
| } |
| break; |
| default: |
| goto error; |
| } |
| |
| edac_dbg(0, "Associated PCI %02x.%02d.%d with dev = %p\n", |
| sbridge_dev->bus, |
| PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), |
| pdev); |
| } |
| |
| /* Check if everything were registered */ |
| if (!pvt->pci_sad0 || !pvt->pci_ha0 || !pvt->pci_br0 || |
| !pvt->pci_br1 || !pvt->pci_tad || !pvt->pci_ras || |
| !pvt->pci_ta) |
| goto enodev; |
| |
| if (saw_chan_mask != 0x0f && /* -EN */ |
| saw_chan_mask != 0x33 && /* -EP */ |
| saw_chan_mask != 0xff) /* -EX */ |
| goto enodev; |
| return 0; |
| |
| enodev: |
| sbridge_printk(KERN_ERR, "Some needed devices are missing\n"); |
| return -ENODEV; |
| |
| error: |
| sbridge_printk(KERN_ERR, |
| "Unexpected device %02x:%02x\n", PCI_VENDOR_ID_INTEL, |
| pdev->device); |
| return -EINVAL; |
| } |
| |
| static int haswell_mci_bind_devs(struct mem_ctl_info *mci, |
| struct sbridge_dev *sbridge_dev) |
| { |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| struct pci_dev *pdev; |
| u8 saw_chan_mask = 0; |
| int i; |
| |
| /* there's only one device per system; not tied to any bus */ |
| if (pvt->info.pci_vtd == NULL) |
| /* result will be checked later */ |
| pvt->info.pci_vtd = pci_get_device(PCI_VENDOR_ID_INTEL, |
| PCI_DEVICE_ID_INTEL_HASWELL_IMC_VTD_MISC, |
| NULL); |
| |
| for (i = 0; i < sbridge_dev->n_devs; i++) { |
| pdev = sbridge_dev->pdev[i]; |
| if (!pdev) |
| continue; |
| |
| switch (pdev->device) { |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD0: |
| pvt->pci_sad0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD1: |
| pvt->pci_sad1 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0: |
| pvt->pci_ha0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TA: |
| pvt->pci_ta = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_THERMAL: |
| pvt->pci_ras = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD0: |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD1: |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD2: |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD3: |
| { |
| int id = pdev->device - PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD0; |
| |
| pvt->pci_tad[id] = pdev; |
| saw_chan_mask |= 1 << id; |
| } |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD0: |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD1: |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD2: |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD3: |
| { |
| int id = pdev->device - PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD0 + 4; |
| |
| pvt->pci_tad[id] = pdev; |
| saw_chan_mask |= 1 << id; |
| } |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO0: |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO1: |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO2: |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO3: |
| if (!pvt->pci_ddrio) |
| pvt->pci_ddrio = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1: |
| pvt->pci_ha1 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TA: |
| pvt->pci_ha1_ta = pdev; |
| break; |
| default: |
| break; |
| } |
| |
| edac_dbg(0, "Associated PCI %02x.%02d.%d with dev = %p\n", |
| sbridge_dev->bus, |
| PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), |
| pdev); |
| } |
| |
| /* Check if everything were registered */ |
| if (!pvt->pci_sad0 || !pvt->pci_ha0 || !pvt->pci_sad1 || |
| !pvt->pci_ras || !pvt->pci_ta || !pvt->info.pci_vtd) |
| goto enodev; |
| |
| if (saw_chan_mask != 0x0f && /* -EN */ |
| saw_chan_mask != 0x33 && /* -EP */ |
| saw_chan_mask != 0xff) /* -EX */ |
| goto enodev; |
| return 0; |
| |
| enodev: |
| sbridge_printk(KERN_ERR, "Some needed devices are missing\n"); |
| return -ENODEV; |
| } |
| |
| static int broadwell_mci_bind_devs(struct mem_ctl_info *mci, |
| struct sbridge_dev *sbridge_dev) |
| { |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| struct pci_dev *pdev; |
| u8 saw_chan_mask = 0; |
| int i; |
| |
| /* there's only one device per system; not tied to any bus */ |
| if (pvt->info.pci_vtd == NULL) |
| /* result will be checked later */ |
| pvt->info.pci_vtd = pci_get_device(PCI_VENDOR_ID_INTEL, |
| PCI_DEVICE_ID_INTEL_BROADWELL_IMC_VTD_MISC, |
| NULL); |
| |
| for (i = 0; i < sbridge_dev->n_devs; i++) { |
| pdev = sbridge_dev->pdev[i]; |
| if (!pdev) |
| continue; |
| |
| switch (pdev->device) { |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD0: |
| pvt->pci_sad0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD1: |
| pvt->pci_sad1 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0: |
| pvt->pci_ha0 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA: |
| pvt->pci_ta = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_THERMAL: |
| pvt->pci_ras = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0: |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD1: |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD2: |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD3: |
| { |
| int id = pdev->device - PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0; |
| pvt->pci_tad[id] = pdev; |
| saw_chan_mask |= 1 << id; |
| } |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD0: |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD1: |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD2: |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD3: |
| { |
| int id = pdev->device - PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD0 + 4; |
| pvt->pci_tad[id] = pdev; |
| saw_chan_mask |= 1 << id; |
| } |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_DDRIO0: |
| pvt->pci_ddrio = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1: |
| pvt->pci_ha1 = pdev; |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TA: |
| pvt->pci_ha1_ta = pdev; |
| break; |
| default: |
| break; |
| } |
| |
| edac_dbg(0, "Associated PCI %02x.%02d.%d with dev = %p\n", |
| sbridge_dev->bus, |
| PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), |
| pdev); |
| } |
| |
| /* Check if everything were registered */ |
| if (!pvt->pci_sad0 || !pvt->pci_ha0 || !pvt->pci_sad1 || |
| !pvt->pci_ras || !pvt->pci_ta || !pvt->info.pci_vtd) |
| goto enodev; |
| |
| if (saw_chan_mask != 0x0f && /* -EN */ |
| saw_chan_mask != 0x33 && /* -EP */ |
| saw_chan_mask != 0xff) /* -EX */ |
| goto enodev; |
| return 0; |
| |
| enodev: |
| sbridge_printk(KERN_ERR, "Some needed devices are missing\n"); |
| return -ENODEV; |
| } |
| |
| static int knl_mci_bind_devs(struct mem_ctl_info *mci, |
| struct sbridge_dev *sbridge_dev) |
| { |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| struct pci_dev *pdev; |
| int dev, func; |
| |
| int i; |
| int devidx; |
| |
| for (i = 0; i < sbridge_dev->n_devs; i++) { |
| pdev = sbridge_dev->pdev[i]; |
| if (!pdev) |
| continue; |
| |
| /* Extract PCI device and function. */ |
| dev = (pdev->devfn >> 3) & 0x1f; |
| func = pdev->devfn & 0x7; |
| |
| switch (pdev->device) { |
| case PCI_DEVICE_ID_INTEL_KNL_IMC_MC: |
| if (dev == 8) |
| pvt->knl.pci_mc0 = pdev; |
| else if (dev == 9) |
| pvt->knl.pci_mc1 = pdev; |
| else { |
| sbridge_printk(KERN_ERR, |
| "Memory controller in unexpected place! (dev %d, fn %d)\n", |
| dev, func); |
| continue; |
| } |
| break; |
| |
| case PCI_DEVICE_ID_INTEL_KNL_IMC_SAD0: |
| pvt->pci_sad0 = pdev; |
| break; |
| |
| case PCI_DEVICE_ID_INTEL_KNL_IMC_SAD1: |
| pvt->pci_sad1 = pdev; |
| break; |
| |
| case PCI_DEVICE_ID_INTEL_KNL_IMC_CHA: |
| /* There are one of these per tile, and range from |
| * 1.14.0 to 1.18.5. |
| */ |
| devidx = ((dev-14)*8)+func; |
| |
| if (devidx < 0 || devidx >= KNL_MAX_CHAS) { |
| sbridge_printk(KERN_ERR, |
| "Caching and Home Agent in unexpected place! (dev %d, fn %d)\n", |
| dev, func); |
| continue; |
| } |
| |
| WARN_ON(pvt->knl.pci_cha[devidx] != NULL); |
| |
| pvt->knl.pci_cha[devidx] = pdev; |
| break; |
| |
| case PCI_DEVICE_ID_INTEL_KNL_IMC_CHANNEL: |
| devidx = -1; |
| |
| /* |
| * MC0 channels 0-2 are device 9 function 2-4, |
| * MC1 channels 3-5 are device 8 function 2-4. |
| */ |
| |
| if (dev == 9) |
| devidx = func-2; |
| else if (dev == 8) |
| devidx = 3 + (func-2); |
| |
| if (devidx < 0 || devidx >= KNL_MAX_CHANNELS) { |
| sbridge_printk(KERN_ERR, |
| "DRAM Channel Registers in unexpected place! (dev %d, fn %d)\n", |
| dev, func); |
| continue; |
| } |
| |
| WARN_ON(pvt->knl.pci_channel[devidx] != NULL); |
| pvt->knl.pci_channel[devidx] = pdev; |
| break; |
| |
| case PCI_DEVICE_ID_INTEL_KNL_IMC_TOLHM: |
| pvt->knl.pci_mc_info = pdev; |
| break; |
| |
| case PCI_DEVICE_ID_INTEL_KNL_IMC_TA: |
| pvt->pci_ta = pdev; |
| break; |
| |
| default: |
| sbridge_printk(KERN_ERR, "Unexpected device %d\n", |
| pdev->device); |
| break; |
| } |
| } |
| |
| if (!pvt->knl.pci_mc0 || !pvt->knl.pci_mc1 || |
| !pvt->pci_sad0 || !pvt->pci_sad1 || |
| !pvt->pci_ta) { |
| goto enodev; |
| } |
| |
| for (i = 0; i < KNL_MAX_CHANNELS; i++) { |
| if (!pvt->knl.pci_channel[i]) { |
| sbridge_printk(KERN_ERR, "Missing channel %d\n", i); |
| goto enodev; |
| } |
| } |
| |
| for (i = 0; i < KNL_MAX_CHAS; i++) { |
| if (!pvt->knl.pci_cha[i]) { |
| sbridge_printk(KERN_ERR, "Missing CHA %d\n", i); |
| goto enodev; |
| } |
| } |
| |
| return 0; |
| |
| enodev: |
| sbridge_printk(KERN_ERR, "Some needed devices are missing\n"); |
| return -ENODEV; |
| } |
| |
| /**************************************************************************** |
| Error check routines |
| ****************************************************************************/ |
| |
| /* |
| * While Sandy Bridge has error count registers, SMI BIOS read values from |
| * and resets the counters. So, they are not reliable for the OS to read |
| * from them. So, we have no option but to just trust on whatever MCE is |
| * telling us about the errors. |
| */ |
| static void sbridge_mce_output_error(struct mem_ctl_info *mci, |
| const struct mce *m) |
| { |
| struct mem_ctl_info *new_mci; |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| enum hw_event_mc_err_type tp_event; |
| char *type, *optype, msg[256]; |
| bool ripv = GET_BITFIELD(m->mcgstatus, 0, 0); |
| bool overflow = GET_BITFIELD(m->status, 62, 62); |
| bool uncorrected_error = GET_BITFIELD(m->status, 61, 61); |
| bool recoverable; |
| u32 core_err_cnt = GET_BITFIELD(m->status, 38, 52); |
| u32 mscod = GET_BITFIELD(m->status, 16, 31); |
| u32 errcode = GET_BITFIELD(m->status, 0, 15); |
| u32 channel = GET_BITFIELD(m->status, 0, 3); |
| u32 optypenum = GET_BITFIELD(m->status, 4, 6); |
| long channel_mask, first_channel; |
| u8 rank, socket, ha; |
| int rc, dimm; |
| char *area_type = NULL; |
| |
| if (pvt->info.type != SANDY_BRIDGE) |
| recoverable = true; |
| else |
| recoverable = GET_BITFIELD(m->status, 56, 56); |
| |
| if (uncorrected_error) { |
| if (ripv) { |
| type = "FATAL"; |
| tp_event = HW_EVENT_ERR_FATAL; |
| } else { |
| type = "NON_FATAL"; |
| tp_event = HW_EVENT_ERR_UNCORRECTED; |
| } |
| } else { |
| type = "CORRECTED"; |
| tp_event = HW_EVENT_ERR_CORRECTED; |
| } |
| |
| /* |
| * According with Table 15-9 of the Intel Architecture spec vol 3A, |
| * memory errors should fit in this mask: |
| * 000f 0000 1mmm cccc (binary) |
| * where: |
| * f = Correction Report Filtering Bit. If 1, subsequent errors |
| * won't be shown |
| * mmm = error type |
| * cccc = channel |
| * If the mask doesn't match, report an error to the parsing logic |
| */ |
| if (! ((errcode & 0xef80) == 0x80)) { |
| optype = "Can't parse: it is not a mem"; |
| } else { |
| switch (optypenum) { |
| case 0: |
| optype = "generic undef request error"; |
| break; |
| case 1: |
| optype = "memory read error"; |
| break; |
| case 2: |
| optype = "memory write error"; |
| break; |
| case 3: |
| optype = "addr/cmd error"; |
| break; |
| case 4: |
| optype = "memory scrubbing error"; |
| break; |
| default: |
| optype = "reserved"; |
| break; |
| } |
| } |
| |
| /* Only decode errors with an valid address (ADDRV) */ |
| if (!GET_BITFIELD(m->status, 58, 58)) |
| return; |
| |
| if (pvt->info.type == KNIGHTS_LANDING) { |
| if (channel == 14) { |
| edac_dbg(0, "%s%s err_code:%04x:%04x EDRAM bank %d\n", |
| overflow ? " OVERFLOW" : "", |
| (uncorrected_error && recoverable) |
| ? " recoverable" : "", |
| mscod, errcode, |
| m->bank); |
| } else { |
| char A = *("A"); |
| |
| channel = knl_channel_remap(channel); |
| channel_mask = 1 << channel; |
| snprintf(msg, sizeof(msg), |
| "%s%s err_code:%04x:%04x channel:%d (DIMM_%c)", |
| overflow ? " OVERFLOW" : "", |
| (uncorrected_error && recoverable) |
| ? " recoverable" : " ", |
| mscod, errcode, channel, A + channel); |
| edac_mc_handle_error(tp_event, mci, core_err_cnt, |
| m->addr >> PAGE_SHIFT, m->addr & ~PAGE_MASK, 0, |
| channel, 0, -1, |
| optype, msg); |
| } |
| return; |
| } else { |
| rc = get_memory_error_data(mci, m->addr, &socket, &ha, |
| &channel_mask, &rank, &area_type, msg); |
| } |
| |
| if (rc < 0) |
| goto err_parsing; |
| new_mci = get_mci_for_node_id(socket); |
| if (!new_mci) { |
| strcpy(msg, "Error: socket got corrupted!"); |
| goto err_parsing; |
| } |
| mci = new_mci; |
| pvt = mci->pvt_info; |
| |
| first_channel = find_first_bit(&channel_mask, NUM_CHANNELS); |
| |
| if (rank < 4) |
| dimm = 0; |
| else if (rank < 8) |
| dimm = 1; |
| else |
| dimm = 2; |
| |
| |
| /* |
| * FIXME: On some memory configurations (mirror, lockstep), the |
| * Memory Controller can't point the error to a single DIMM. The |
| * EDAC core should be handling the channel mask, in order to point |
| * to the group of dimm's where the error may be happening. |
| */ |
| if (!pvt->is_lockstep && !pvt->is_mirrored && !pvt->is_close_pg) |
| channel = first_channel; |
| |
| snprintf(msg, sizeof(msg), |
| "%s%s area:%s err_code:%04x:%04x socket:%d ha:%d channel_mask:%ld rank:%d", |
| overflow ? " OVERFLOW" : "", |
| (uncorrected_error && recoverable) ? " recoverable" : "", |
| area_type, |
| mscod, errcode, |
| socket, ha, |
| channel_mask, |
| rank); |
| |
| edac_dbg(0, "%s\n", msg); |
| |
| /* FIXME: need support for channel mask */ |
| |
| if (channel == CHANNEL_UNSPECIFIED) |
| channel = -1; |
| |
| /* Call the helper to output message */ |
| edac_mc_handle_error(tp_event, mci, core_err_cnt, |
| m->addr >> PAGE_SHIFT, m->addr & ~PAGE_MASK, 0, |
| 4*ha+channel, dimm, -1, |
| optype, msg); |
| return; |
| err_parsing: |
| edac_mc_handle_error(tp_event, mci, core_err_cnt, 0, 0, 0, |
| -1, -1, -1, |
| msg, ""); |
| |
| } |
| |
| /* |
| * sbridge_check_error Retrieve and process errors reported by the |
| * hardware. Called by the Core module. |
| */ |
| static void sbridge_check_error(struct mem_ctl_info *mci) |
| { |
| struct sbridge_pvt *pvt = mci->pvt_info; |
| int i; |
| unsigned count = 0; |
| struct mce *m; |
| |
| /* |
| * MCE first step: Copy all mce errors into a temporary buffer |
| * We use a double buffering here, to reduce the risk of |
| * loosing an error. |
| */ |
| smp_rmb(); |
| count = (pvt->mce_out + MCE_LOG_LEN - pvt->mce_in) |
| % MCE_LOG_LEN; |
| if (!count) |
| return; |
| |
| m = pvt->mce_outentry; |
| if (pvt->mce_in + count > MCE_LOG_LEN) { |
| unsigned l = MCE_LOG_LEN - pvt->mce_in; |
| |
| memcpy(m, &pvt->mce_entry[pvt->mce_in], sizeof(*m) * l); |
| smp_wmb(); |
| pvt->mce_in = 0; |
| count -= l; |
| m += l; |
| } |
| memcpy(m, &pvt->mce_entry[pvt->mce_in], sizeof(*m) * count); |
| smp_wmb(); |
| pvt->mce_in += count; |
| |
| smp_rmb(); |
| if (pvt->mce_overrun) { |
| sbridge_printk(KERN_ERR, "Lost %d memory errors\n", |
| pvt->mce_overrun); |
| smp_wmb(); |
| pvt->mce_overrun = 0; |
| } |
| |
| /* |
| * MCE second step: parse errors and display |
| */ |
| for (i = 0; i < count; i++) |
| sbridge_mce_output_error(mci, &pvt->mce_outentry[i]); |
| } |
| |
| /* |
| * sbridge_mce_check_error Replicates mcelog routine to get errors |
| * This routine simply queues mcelog errors, and |
| * return. The error itself should be handled later |
| * by sbridge_check_error. |
| * WARNING: As this routine should be called at NMI time, extra care should |
| * be taken to avoid deadlocks, and to be as fast as possible. |
| */ |
| static int sbridge_mce_check_error(struct notifier_block *nb, unsigned long val, |
| void *data) |
| { |
| struct mce *mce = (struct mce *)data; |
| struct mem_ctl_info *mci; |
| struct sbridge_pvt *pvt; |
| char *type; |
| |
| if (get_edac_report_status() == EDAC_REPORTING_DISABLED) |
| return NOTIFY_DONE; |
| |
| mci = get_mci_for_node_id(mce->socketid); |
| if (!mci) |
| return NOTIFY_BAD; |
| pvt = mci->pvt_info; |
| |
| /* |
| * Just let mcelog handle it if the error is |
| * outside the memory controller. A memory error |
| * is indicated by bit 7 = 1 and bits = 8-11,13-15 = 0. |
| * bit 12 has an special meaning. |
| */ |
| if ((mce->status & 0xefff) >> 7 != 1) |
| return NOTIFY_DONE; |
| |
| if (mce->mcgstatus & MCG_STATUS_MCIP) |
| type = "Exception"; |
| else |
| type = "Event"; |
| |
| sbridge_mc_printk(mci, KERN_DEBUG, "HANDLING MCE MEMORY ERROR\n"); |
| |
| sbridge_mc_printk(mci, KERN_DEBUG, "CPU %d: Machine Check %s: %Lx " |
| "Bank %d: %016Lx\n", mce->extcpu, type, |
| mce->mcgstatus, mce->bank, mce->status); |
| sbridge_mc_printk(mci, KERN_DEBUG, "TSC %llx ", mce->tsc); |
| sbridge_mc_printk(mci, KERN_DEBUG, "ADDR %llx ", mce->addr); |
| sbridge_mc_printk(mci, KERN_DEBUG, "MISC %llx ", mce->misc); |
| |
| sbridge_mc_printk(mci, KERN_DEBUG, "PROCESSOR %u:%x TIME %llu SOCKET " |
| "%u APIC %x\n", mce->cpuvendor, mce->cpuid, |
| mce->time, mce->socketid, mce->apicid); |
| |
| smp_rmb(); |
| if ((pvt->mce_out + 1) % MCE_LOG_LEN == pvt->mce_in) { |
| smp_wmb(); |
| pvt->mce_overrun++; |
| return NOTIFY_DONE; |
| } |
| |
| /* Copy memory error at the ringbuffer */ |
| memcpy(&pvt->mce_entry[pvt->mce_out], mce, sizeof(*mce)); |
| smp_wmb(); |
| pvt->mce_out = (pvt->mce_out + 1) % MCE_LOG_LEN; |
| |
| /* Handle fatal errors immediately */ |
| if (mce->mcgstatus & 1) |
| sbridge_check_error(mci); |
| |
| /* Advice mcelog that the error were handled */ |
| return NOTIFY_STOP; |
| } |
| |
| static struct notifier_block sbridge_mce_dec = { |
| .notifier_call = sbridge_mce_check_error, |
| }; |
| |
| /**************************************************************************** |
| EDAC register/unregister logic |
| ****************************************************************************/ |
| |
| static void sbridge_unregister_mci(struct sbridge_dev *sbridge_dev) |
| { |
| struct mem_ctl_info *mci = sbridge_dev->mci; |
| struct sbridge_pvt *pvt; |
| |
| if (unlikely(!mci || !mci->pvt_info)) { |
| edac_dbg(0, "MC: dev = %p\n", &sbridge_dev->pdev[0]->dev); |
| |
| sbridge_printk(KERN_ERR, "Couldn't find mci handler\n"); |
| return; |
| } |
| |
| pvt = mci->pvt_info; |
| |
| edac_dbg(0, "MC: mci = %p, dev = %p\n", |
| mci, &sbridge_dev->pdev[0]->dev); |
| |
| /* Remove MC sysfs nodes */ |
| edac_mc_del_mc(mci->pdev); |
| |
| edac_dbg(1, "%s: free mci struct\n", mci->ctl_name); |
| kfree(mci->ctl_name); |
| edac_mc_free(mci); |
| sbridge_dev->mci = NULL; |
| } |
| |
| static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type) |
| { |
| struct mem_ctl_info *mci; |
| struct edac_mc_layer layers[2]; |
| struct sbridge_pvt *pvt; |
| struct pci_dev *pdev = sbridge_dev->pdev[0]; |
| int rc; |
| |
| /* Check the number of active and not disabled channels */ |
| rc = check_if_ecc_is_active(sbridge_dev->bus, type); |
| if (unlikely(rc < 0)) |
| return rc; |
| |
| /* allocate a new MC control structure */ |
| layers[0].type = EDAC_MC_LAYER_CHANNEL; |
| layers[0].size = type == KNIGHTS_LANDING ? |
| KNL_MAX_CHANNELS : NUM_CHANNELS; |
| layers[0].is_virt_csrow = false; |
| layers[1].type = EDAC_MC_LAYER_SLOT; |
| layers[1].size = type == KNIGHTS_LANDING ? 1 : MAX_DIMMS; |
| layers[1].is_virt_csrow = true; |
| mci = edac_mc_alloc(sbridge_dev->mc, ARRAY_SIZE(layers), layers, |
| sizeof(*pvt)); |
| |
| if (unlikely(!mci)) |
| return -ENOMEM; |
| |
| edac_dbg(0, "MC: mci = %p, dev = %p\n", |
| mci, &pdev->dev); |
| |
| pvt = mci->pvt_info; |
| memset(pvt, 0, sizeof(*pvt)); |
| |
| /* Associate sbridge_dev and mci for future usage */ |
| pvt->sbridge_dev = sbridge_dev; |
| sbridge_dev->mci = mci; |
| |
| mci->mtype_cap = type == KNIGHTS_LANDING ? |
| MEM_FLAG_DDR4 : MEM_FLAG_DDR3; |
| mci->edac_ctl_cap = EDAC_FLAG_NONE; |
| mci->edac_cap = EDAC_FLAG_NONE; |
| mci->mod_name = "sbridge_edac.c"; |
| mci->mod_ver = SBRIDGE_REVISION; |
| mci->dev_name = pci_name(pdev); |
| mci->ctl_page_to_phys = NULL; |
| |
| /* Set the function pointer to an actual operation function */ |
| mci->edac_check = sbridge_check_error; |
| |
| pvt->info.type = type; |
| switch (type) { |
| case IVY_BRIDGE: |
| pvt->info.rankcfgr = IB_RANK_CFG_A; |
| pvt->info.get_tolm = ibridge_get_tolm; |
| pvt->info.get_tohm = ibridge_get_tohm; |
| pvt->info.dram_rule = ibridge_dram_rule; |
| pvt->info.get_memory_type = get_memory_type; |
| pvt->info.get_node_id = get_node_id; |
| pvt->info.rir_limit = rir_limit; |
| pvt->info.sad_limit = sad_limit; |
| pvt->info.interleave_mode = interleave_mode; |
| pvt->info.show_interleave_mode = show_interleave_mode; |
| pvt->info.dram_attr = dram_attr; |
| pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule); |
| pvt->info.interleave_list = ibridge_interleave_list; |
| pvt->info.max_interleave = ARRAY_SIZE(ibridge_interleave_list); |
| pvt->info.interleave_pkg = ibridge_interleave_pkg; |
| pvt->info.get_width = ibridge_get_width; |
| mci->ctl_name = kasprintf(GFP_KERNEL, "Ivy Bridge Socket#%d", mci->mc_idx); |
| |
| /* Store pci devices at mci for faster access */ |
| rc = ibridge_mci_bind_devs(mci, sbridge_dev); |
| if (unlikely(rc < 0)) |
| goto fail0; |
| break; |
| case SANDY_BRIDGE: |
| pvt->info.rankcfgr = SB_RANK_CFG_A; |
| pvt->info.get_tolm = sbridge_get_tolm; |
| pvt->info.get_tohm = sbridge_get_tohm; |
| pvt->info.dram_rule = sbridge_dram_rule; |
| pvt->info.get_memory_type = get_memory_type; |
| pvt->info.get_node_id = get_node_id; |
| pvt->info.rir_limit = rir_limit; |
| pvt->info.sad_limit = sad_limit; |
| pvt->info.interleave_mode = interleave_mode; |
| pvt->info.show_interleave_mode = show_interleave_mode; |
| pvt->info.dram_attr = dram_attr; |
| pvt->info.max_sad = ARRAY_SIZE(sbridge_dram_rule); |
| pvt->info.interleave_list = sbridge_interleave_list; |
| pvt->info.max_interleave = ARRAY_SIZE(sbridge_interleave_list); |
| pvt->info.interleave_pkg = sbridge_interleave_pkg; |
| pvt->info.get_width = sbridge_get_width; |
| mci->ctl_name = kasprintf(GFP_KERNEL, "Sandy Bridge Socket#%d", mci->mc_idx); |
| |
| /* Store pci devices at mci for faster access */ |
| rc = sbridge_mci_bind_devs(mci, sbridge_dev); |
| if (unlikely(rc < 0)) |
| goto fail0; |
| break; |
| case HASWELL: |
| /* rankcfgr isn't used */ |
| pvt->info.get_tolm = haswell_get_tolm; |
| pvt->info.get_tohm = haswell_get_tohm; |
| pvt->info.dram_rule = ibridge_dram_rule; |
| pvt->info.get_memory_type = haswell_get_memory_type; |
| pvt->info.get_node_id = haswell_get_node_id; |
| pvt->info.rir_limit = haswell_rir_limit; |
| pvt->info.sad_limit = sad_limit; |
| pvt->info.interleave_mode = interleave_mode; |
| pvt->info.show_interleave_mode = show_interleave_mode; |
| pvt->info.dram_attr = dram_attr; |
| pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule); |
| pvt->info.interleave_list = ibridge_interleave_list; |
| pvt->info.max_interleave = ARRAY_SIZE(ibridge_interleave_list); |
| pvt->info.interleave_pkg = ibridge_interleave_pkg; |
| pvt->info.get_width = ibridge_get_width; |
| mci->ctl_name = kasprintf(GFP_KERNEL, "Haswell Socket#%d", mci->mc_idx); |
| |
| /* Store pci devices at mci for faster access */ |
| rc = haswell_mci_bind_devs(mci, sbridge_dev); |
| if (unlikely(rc < 0)) |
| goto fail0; |
| break; |
| case BROADWELL: |
| /* rankcfgr isn't used */ |
| pvt->info.get_tolm = haswell_get_tolm; |
| pvt->info.get_tohm = haswell_get_tohm; |
| pvt->info.dram_rule = ibridge_dram_rule; |
| pvt->info.get_memory_type = haswell_get_memory_type; |
| pvt->info.get_node_id = haswell_get_node_id; |
| pvt->info.rir_limit = haswell_rir_limit; |
| pvt->info.sad_limit = sad_limit; |
| pvt->info.interleave_mode = interleave_mode; |
| pvt->info.show_interleave_mode = show_interleave_mode; |
| pvt->info.dram_attr = dram_attr; |
| pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule); |
| pvt->info.interleave_list = ibridge_interleave_list; |
| pvt->info.max_interleave = ARRAY_SIZE(ibridge_interleave_list); |
| pvt->info.interleave_pkg = ibridge_interleave_pkg; |
| pvt->info.get_width = broadwell_get_width; |
| mci->ctl_name = kasprintf(GFP_KERNEL, "Broadwell Socket#%d", mci->mc_idx); |
| |
| /* Store pci devices at mci for faster access */ |
| rc = broadwell_mci_bind_devs(mci, sbridge_dev); |
| if (unlikely(rc < 0)) |
| goto fail0; |
| break; |
| case KNIGHTS_LANDING: |
| /* pvt->info.rankcfgr == ??? */ |
| pvt->info.get_tolm = knl_get_tolm; |
| pvt->info.get_tohm = knl_get_tohm; |
| pvt->info.dram_rule = knl_dram_rule; |
| pvt->info.get_memory_type = knl_get_memory_type; |
| pvt->info.get_node_id = knl_get_node_id; |
| pvt->info.rir_limit = NULL; |
| pvt->info.sad_limit = knl_sad_limit; |
| pvt->info.interleave_mode = knl_interleave_mode; |
| pvt->info.show_interleave_mode = knl_show_interleave_mode; |
| pvt->info.dram_attr = dram_attr_knl; |
| pvt->info.max_sad = ARRAY_SIZE(knl_dram_rule); |
| pvt->info.interleave_list = knl_interleave_list; |
| pvt->info.max_interleave = ARRAY_SIZE(knl_interleave_list); |
| pvt->info.interleave_pkg = ibridge_interleave_pkg; |
| pvt->info.get_width = knl_get_width; |
| mci->ctl_name = kasprintf(GFP_KERNEL, |
| "Knights Landing Socket#%d", mci->mc_idx); |
| |
| rc = knl_mci_bind_devs(mci, sbridge_dev); |
| if (unlikely(rc < 0)) |
| goto fail0; |
| break; |
| } |
| |
| /* Get dimm basic config and the memory layout */ |
| get_dimm_config(mci); |
| get_memory_layout(mci); |
| |
| /* record ptr to the generic device */ |
| mci->pdev = &pdev->dev; |
| |
| /* add this new MC control structure to EDAC's list of MCs */ |
| if (unlikely(edac_mc_add_mc(mci))) { |
| edac_dbg(0, "MC: failed edac_mc_add_mc()\n"); |
| rc = -EINVAL; |
| goto fail0; |
| } |
| |
| return 0; |
| |
| fail0: |
| kfree(mci->ctl_name); |
| edac_mc_free(mci); |
| sbridge_dev->mci = NULL; |
| return rc; |
| } |
| |
| /* |
| * sbridge_probe Probe for ONE instance of device to see if it is |
| * present. |
| * return: |
| * 0 for FOUND a device |
| * < 0 for error code |
| */ |
| |
| static int sbridge_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| { |
| int rc = -ENODEV; |
| u8 mc, num_mc = 0; |
| struct sbridge_dev *sbridge_dev; |
| enum type type = SANDY_BRIDGE; |
| |
| /* get the pci devices we want to reserve for our use */ |
| mutex_lock(&sbridge_edac_lock); |
| |
| /* |
| * All memory controllers are allocated at the first pass. |
| */ |
| if (unlikely(probed >= 1)) { |
| mutex_unlock(&sbridge_edac_lock); |
| return -ENODEV; |
| } |
| probed++; |
| |
| switch (pdev->device) { |
| case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA: |
| rc = sbridge_get_all_devices(&num_mc, |
| pci_dev_descr_ibridge_table); |
| type = IVY_BRIDGE; |
| break; |
| case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0: |
| rc = sbridge_get_all_devices(&num_mc, |
| pci_dev_descr_sbridge_table); |
| type = SANDY_BRIDGE; |
| break; |
| case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0: |
| rc = sbridge_get_all_devices(&num_mc, |
| pci_dev_descr_haswell_table); |
| type = HASWELL; |
| break; |
| case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0: |
| rc = sbridge_get_all_devices(&num_mc, |
| pci_dev_descr_broadwell_table); |
| type = BROADWELL; |
| break; |
| case PCI_DEVICE_ID_INTEL_KNL_IMC_SAD0: |
| rc = sbridge_get_all_devices_knl(&num_mc, |
| pci_dev_descr_knl_table); |
| type = KNIGHTS_LANDING; |
| break; |
| } |
| if (unlikely(rc < 0)) { |
| edac_dbg(0, "couldn't get all devices for 0x%x\n", pdev->device); |
| goto fail0; |
| } |
| |
| mc = 0; |
| |
| list_for_each_entry(sbridge_dev, &sbridge_edac_list, list) { |
| edac_dbg(0, "Registering MC#%d (%d of %d)\n", |
| mc, mc + 1, num_mc); |
| |
| sbridge_dev->mc = mc++; |
| rc = sbridge_register_mci(sbridge_dev, type); |
| if (unlikely(rc < 0)) |
| goto fail1; |
| } |
| |
| sbridge_printk(KERN_INFO, "%s\n", SBRIDGE_REVISION); |
| |
| mutex_unlock(&sbridge_edac_lock); |
| return 0; |
| |
| fail1: |
| list_for_each_entry(sbridge_dev, &sbridge_edac_list, list) |
| sbridge_unregister_mci(sbridge_dev); |
| |
| sbridge_put_all_devices(); |
| fail0: |
| mutex_unlock(&sbridge_edac_lock); |
| return rc; |
| } |
| |
| /* |
| * sbridge_remove destructor for one instance of device |
| * |
| */ |
| static void sbridge_remove(struct pci_dev *pdev) |
| { |
| struct sbridge_dev *sbridge_dev; |
| |
| edac_dbg(0, "\n"); |
| |
| /* |
| * we have a trouble here: pdev value for removal will be wrong, since |
| * it will point to the X58 register used to detect that the machine |
| * is a Nehalem or upper design. However, due to the way several PCI |
| * devices are grouped together to provide MC functionality, we need |
| * to use a different method for releasing the devices |
| */ |
| |
| mutex_lock(&sbridge_edac_lock); |
| |
| if (unlikely(!probed)) { |
| mutex_unlock(&sbridge_edac_lock); |
| return; |
| } |
| |
| list_for_each_entry(sbridge_dev, &sbridge_edac_list, list) |
| sbridge_unregister_mci(sbridge_dev); |
| |
| /* Release PCI resources */ |
| sbridge_put_all_devices(); |
| |
| probed--; |
| |
| mutex_unlock(&sbridge_edac_lock); |
| } |
| |
| MODULE_DEVICE_TABLE(pci, sbridge_pci_tbl); |
| |
| /* |
| * sbridge_driver pci_driver structure for this module |
| * |
| */ |
| static struct pci_driver sbridge_driver = { |
| .name = "sbridge_edac", |
| .probe = sbridge_probe, |
| .remove = sbridge_remove, |
| .id_table = sbridge_pci_tbl, |
| }; |
| |
| /* |
| * sbridge_init Module entry function |
| * Try to initialize this module for its devices |
| */ |
| static int __init sbridge_init(void) |
| { |
| int pci_rc; |
| |
| edac_dbg(2, "\n"); |
| |
| /* Ensure that the OPSTATE is set correctly for POLL or NMI */ |
| opstate_init(); |
| |
| pci_rc = pci_register_driver(&sbridge_driver); |
| if (pci_rc >= 0) { |
| mce_register_decode_chain(&sbridge_mce_dec); |
| if (get_edac_report_status() == EDAC_REPORTING_DISABLED) |
| sbridge_printk(KERN_WARNING, "Loading driver, error reporting disabled.\n"); |
| return 0; |
| } |
| |
| sbridge_printk(KERN_ERR, "Failed to register device with error %d.\n", |
| pci_rc); |
| |
| return pci_rc; |
| } |
| |
| /* |
| * sbridge_exit() Module exit function |
| * Unregister the driver |
| */ |
| static void __exit sbridge_exit(void) |
| { |
| edac_dbg(2, "\n"); |
| pci_unregister_driver(&sbridge_driver); |
| mce_unregister_decode_chain(&sbridge_mce_dec); |
| } |
| |
| module_init(sbridge_init); |
| module_exit(sbridge_exit); |
| |
| module_param(edac_op_state, int, 0444); |
| MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI"); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Mauro Carvalho Chehab"); |
| MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)"); |
| MODULE_DESCRIPTION("MC Driver for Intel Sandy Bridge and Ivy Bridge memory controllers - " |
| SBRIDGE_REVISION); |