mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
538 lines
15 KiB
538 lines
15 KiB
/* |
|
* AMD64 class Memory Controller kernel module |
|
* |
|
* Copyright (c) 2009 SoftwareBitMaker. |
|
* Copyright (c) 2009-15 Advanced Micro Devices, Inc. |
|
* |
|
* This file may be distributed under the terms of the |
|
* GNU General Public License. |
|
*/ |
|
|
|
#include <linux/module.h> |
|
#include <linux/ctype.h> |
|
#include <linux/init.h> |
|
#include <linux/pci.h> |
|
#include <linux/pci_ids.h> |
|
#include <linux/slab.h> |
|
#include <linux/mmzone.h> |
|
#include <linux/edac.h> |
|
#include <asm/cpu_device_id.h> |
|
#include <asm/msr.h> |
|
#include "edac_module.h" |
|
#include "mce_amd.h" |
|
|
|
#define amd64_info(fmt, arg...) \ |
|
edac_printk(KERN_INFO, "amd64", fmt, ##arg) |
|
|
|
#define amd64_warn(fmt, arg...) \ |
|
edac_printk(KERN_WARNING, "amd64", "Warning: " fmt, ##arg) |
|
|
|
#define amd64_err(fmt, arg...) \ |
|
edac_printk(KERN_ERR, "amd64", "Error: " fmt, ##arg) |
|
|
|
#define amd64_mc_warn(mci, fmt, arg...) \ |
|
edac_mc_chipset_printk(mci, KERN_WARNING, "amd64", fmt, ##arg) |
|
|
|
#define amd64_mc_err(mci, fmt, arg...) \ |
|
edac_mc_chipset_printk(mci, KERN_ERR, "amd64", fmt, ##arg) |
|
|
|
/* |
|
* Throughout the comments in this code, the following terms are used: |
|
* |
|
* SysAddr, DramAddr, and InputAddr |
|
* |
|
* These terms come directly from the amd64 documentation |
|
* (AMD publication #26094). They are defined as follows: |
|
* |
|
* SysAddr: |
|
* This is a physical address generated by a CPU core or a device |
|
* doing DMA. If generated by a CPU core, a SysAddr is the result of |
|
* a virtual to physical address translation by the CPU core's address |
|
* translation mechanism (MMU). |
|
* |
|
* DramAddr: |
|
* A DramAddr is derived from a SysAddr by subtracting an offset that |
|
* depends on which node the SysAddr maps to and whether the SysAddr |
|
* is within a range affected by memory hoisting. The DRAM Base |
|
* (section 3.4.4.1) and DRAM Limit (section 3.4.4.2) registers |
|
* determine which node a SysAddr maps to. |
|
* |
|
* If the DRAM Hole Address Register (DHAR) is enabled and the SysAddr |
|
* is within the range of addresses specified by this register, then |
|
* a value x from the DHAR is subtracted from the SysAddr to produce a |
|
* DramAddr. Here, x represents the base address for the node that |
|
* the SysAddr maps to plus an offset due to memory hoisting. See |
|
* section 3.4.8 and the comments in amd64_get_dram_hole_info() and |
|
* sys_addr_to_dram_addr() below for more information. |
|
* |
|
* If the SysAddr is not affected by the DHAR then a value y is |
|
* subtracted from the SysAddr to produce a DramAddr. Here, y is the |
|
* base address for the node that the SysAddr maps to. See section |
|
* 3.4.4 and the comments in sys_addr_to_dram_addr() below for more |
|
* information. |
|
* |
|
* InputAddr: |
|
* A DramAddr is translated to an InputAddr before being passed to the |
|
* memory controller for the node that the DramAddr is associated |
|
* with. The memory controller then maps the InputAddr to a csrow. |
|
* If node interleaving is not in use, then the InputAddr has the same |
|
* value as the DramAddr. Otherwise, the InputAddr is produced by |
|
* discarding the bits used for node interleaving from the DramAddr. |
|
* See section 3.4.4 for more information. |
|
* |
|
* The memory controller for a given node uses its DRAM CS Base and |
|
* DRAM CS Mask registers to map an InputAddr to a csrow. See |
|
* sections 3.5.4 and 3.5.5 for more information. |
|
*/ |
|
|
|
#define EDAC_AMD64_VERSION "3.5.0" |
|
#define EDAC_MOD_STR "amd64_edac" |
|
|
|
/* Extended Model from CPUID, for CPU Revision numbers */ |
|
#define K8_REV_D 1 |
|
#define K8_REV_E 2 |
|
#define K8_REV_F 4 |
|
|
|
/* Hardware limit on ChipSelect rows per MC and processors per system */ |
|
#define NUM_CHIPSELECTS 8 |
|
#define DRAM_RANGES 8 |
|
#define NUM_CONTROLLERS 8 |
|
|
|
#define ON true |
|
#define OFF false |
|
|
|
/* |
|
* PCI-defined configuration space registers |
|
*/ |
|
#define PCI_DEVICE_ID_AMD_15H_NB_F1 0x1601 |
|
#define PCI_DEVICE_ID_AMD_15H_NB_F2 0x1602 |
|
#define PCI_DEVICE_ID_AMD_15H_M30H_NB_F1 0x141b |
|
#define PCI_DEVICE_ID_AMD_15H_M30H_NB_F2 0x141c |
|
#define PCI_DEVICE_ID_AMD_15H_M60H_NB_F1 0x1571 |
|
#define PCI_DEVICE_ID_AMD_15H_M60H_NB_F2 0x1572 |
|
#define PCI_DEVICE_ID_AMD_16H_NB_F1 0x1531 |
|
#define PCI_DEVICE_ID_AMD_16H_NB_F2 0x1532 |
|
#define PCI_DEVICE_ID_AMD_16H_M30H_NB_F1 0x1581 |
|
#define PCI_DEVICE_ID_AMD_16H_M30H_NB_F2 0x1582 |
|
#define PCI_DEVICE_ID_AMD_17H_DF_F0 0x1460 |
|
#define PCI_DEVICE_ID_AMD_17H_DF_F6 0x1466 |
|
#define PCI_DEVICE_ID_AMD_17H_M10H_DF_F0 0x15e8 |
|
#define PCI_DEVICE_ID_AMD_17H_M10H_DF_F6 0x15ee |
|
#define PCI_DEVICE_ID_AMD_17H_M30H_DF_F0 0x1490 |
|
#define PCI_DEVICE_ID_AMD_17H_M30H_DF_F6 0x1496 |
|
#define PCI_DEVICE_ID_AMD_17H_M60H_DF_F0 0x1448 |
|
#define PCI_DEVICE_ID_AMD_17H_M60H_DF_F6 0x144e |
|
#define PCI_DEVICE_ID_AMD_17H_M70H_DF_F0 0x1440 |
|
#define PCI_DEVICE_ID_AMD_17H_M70H_DF_F6 0x1446 |
|
#define PCI_DEVICE_ID_AMD_19H_DF_F0 0x1650 |
|
#define PCI_DEVICE_ID_AMD_19H_DF_F6 0x1656 |
|
|
|
/* |
|
* Function 1 - Address Map |
|
*/ |
|
#define DRAM_BASE_LO 0x40 |
|
#define DRAM_LIMIT_LO 0x44 |
|
|
|
/* |
|
* F15 M30h D18F1x2[1C:00] |
|
*/ |
|
#define DRAM_CONT_BASE 0x200 |
|
#define DRAM_CONT_LIMIT 0x204 |
|
|
|
/* |
|
* F15 M30h D18F1x2[4C:40] |
|
*/ |
|
#define DRAM_CONT_HIGH_OFF 0x240 |
|
|
|
#define dram_rw(pvt, i) ((u8)(pvt->ranges[i].base.lo & 0x3)) |
|
#define dram_intlv_sel(pvt, i) ((u8)((pvt->ranges[i].lim.lo >> 8) & 0x7)) |
|
#define dram_dst_node(pvt, i) ((u8)(pvt->ranges[i].lim.lo & 0x7)) |
|
|
|
#define DHAR 0xf0 |
|
#define dhar_mem_hoist_valid(pvt) ((pvt)->dhar & BIT(1)) |
|
#define dhar_base(pvt) ((pvt)->dhar & 0xff000000) |
|
#define k8_dhar_offset(pvt) (((pvt)->dhar & 0x0000ff00) << 16) |
|
|
|
/* NOTE: Extra mask bit vs K8 */ |
|
#define f10_dhar_offset(pvt) (((pvt)->dhar & 0x0000ff80) << 16) |
|
|
|
#define DCT_CFG_SEL 0x10C |
|
|
|
#define DRAM_LOCAL_NODE_BASE 0x120 |
|
#define DRAM_LOCAL_NODE_LIM 0x124 |
|
|
|
#define DRAM_BASE_HI 0x140 |
|
#define DRAM_LIMIT_HI 0x144 |
|
|
|
|
|
/* |
|
* Function 2 - DRAM controller |
|
*/ |
|
#define DCSB0 0x40 |
|
#define DCSB1 0x140 |
|
#define DCSB_CS_ENABLE BIT(0) |
|
|
|
#define DCSM0 0x60 |
|
#define DCSM1 0x160 |
|
|
|
#define csrow_enabled(i, dct, pvt) ((pvt)->csels[(dct)].csbases[(i)] & DCSB_CS_ENABLE) |
|
#define csrow_sec_enabled(i, dct, pvt) ((pvt)->csels[(dct)].csbases_sec[(i)] & DCSB_CS_ENABLE) |
|
|
|
#define DRAM_CONTROL 0x78 |
|
|
|
#define DBAM0 0x80 |
|
#define DBAM1 0x180 |
|
|
|
/* Extract the DIMM 'type' on the i'th DIMM from the DBAM reg value passed */ |
|
#define DBAM_DIMM(i, reg) ((((reg) >> (4*(i)))) & 0xF) |
|
|
|
#define DBAM_MAX_VALUE 11 |
|
|
|
#define DCLR0 0x90 |
|
#define DCLR1 0x190 |
|
#define REVE_WIDTH_128 BIT(16) |
|
#define WIDTH_128 BIT(11) |
|
|
|
#define DCHR0 0x94 |
|
#define DCHR1 0x194 |
|
#define DDR3_MODE BIT(8) |
|
|
|
#define DCT_SEL_LO 0x110 |
|
#define dct_high_range_enabled(pvt) ((pvt)->dct_sel_lo & BIT(0)) |
|
#define dct_interleave_enabled(pvt) ((pvt)->dct_sel_lo & BIT(2)) |
|
|
|
#define dct_ganging_enabled(pvt) ((boot_cpu_data.x86 == 0x10) && ((pvt)->dct_sel_lo & BIT(4))) |
|
|
|
#define dct_data_intlv_enabled(pvt) ((pvt)->dct_sel_lo & BIT(5)) |
|
#define dct_memory_cleared(pvt) ((pvt)->dct_sel_lo & BIT(10)) |
|
|
|
#define SWAP_INTLV_REG 0x10c |
|
|
|
#define DCT_SEL_HI 0x114 |
|
|
|
#define F15H_M60H_SCRCTRL 0x1C8 |
|
#define F17H_SCR_BASE_ADDR 0x48 |
|
#define F17H_SCR_LIMIT_ADDR 0x4C |
|
|
|
/* |
|
* Function 3 - Misc Control |
|
*/ |
|
#define NBCTL 0x40 |
|
|
|
#define NBCFG 0x44 |
|
#define NBCFG_CHIPKILL BIT(23) |
|
#define NBCFG_ECC_ENABLE BIT(22) |
|
|
|
/* F3x48: NBSL */ |
|
#define F10_NBSL_EXT_ERR_ECC 0x8 |
|
#define NBSL_PP_OBS 0x2 |
|
|
|
#define SCRCTRL 0x58 |
|
|
|
#define F10_ONLINE_SPARE 0xB0 |
|
#define online_spare_swap_done(pvt, c) (((pvt)->online_spare >> (1 + 2 * (c))) & 0x1) |
|
#define online_spare_bad_dramcs(pvt, c) (((pvt)->online_spare >> (4 + 4 * (c))) & 0x7) |
|
|
|
#define F10_NB_ARRAY_ADDR 0xB8 |
|
#define F10_NB_ARRAY_DRAM BIT(31) |
|
|
|
/* Bits [2:1] are used to select 16-byte section within a 64-byte cacheline */ |
|
#define SET_NB_ARRAY_ADDR(section) (((section) & 0x3) << 1) |
|
|
|
#define F10_NB_ARRAY_DATA 0xBC |
|
#define F10_NB_ARR_ECC_WR_REQ BIT(17) |
|
#define SET_NB_DRAM_INJECTION_WRITE(inj) \ |
|
(BIT(((inj.word) & 0xF) + 20) | \ |
|
F10_NB_ARR_ECC_WR_REQ | inj.bit_map) |
|
#define SET_NB_DRAM_INJECTION_READ(inj) \ |
|
(BIT(((inj.word) & 0xF) + 20) | \ |
|
BIT(16) | inj.bit_map) |
|
|
|
|
|
#define NBCAP 0xE8 |
|
#define NBCAP_CHIPKILL BIT(4) |
|
#define NBCAP_SECDED BIT(3) |
|
#define NBCAP_DCT_DUAL BIT(0) |
|
|
|
#define EXT_NB_MCA_CFG 0x180 |
|
|
|
/* MSRs */ |
|
#define MSR_MCGCTL_NBE BIT(4) |
|
|
|
/* F17h */ |
|
|
|
/* F0: */ |
|
#define DF_DHAR 0x104 |
|
|
|
/* UMC CH register offsets */ |
|
#define UMCCH_BASE_ADDR 0x0 |
|
#define UMCCH_BASE_ADDR_SEC 0x10 |
|
#define UMCCH_ADDR_MASK 0x20 |
|
#define UMCCH_ADDR_MASK_SEC 0x28 |
|
#define UMCCH_ADDR_CFG 0x30 |
|
#define UMCCH_DIMM_CFG 0x80 |
|
#define UMCCH_UMC_CFG 0x100 |
|
#define UMCCH_SDP_CTRL 0x104 |
|
#define UMCCH_ECC_CTRL 0x14C |
|
#define UMCCH_ECC_BAD_SYMBOL 0xD90 |
|
#define UMCCH_UMC_CAP 0xDF0 |
|
#define UMCCH_UMC_CAP_HI 0xDF4 |
|
|
|
/* UMC CH bitfields */ |
|
#define UMC_ECC_CHIPKILL_CAP BIT(31) |
|
#define UMC_ECC_ENABLED BIT(30) |
|
|
|
#define UMC_SDP_INIT BIT(31) |
|
|
|
enum amd_families { |
|
K8_CPUS = 0, |
|
F10_CPUS, |
|
F15_CPUS, |
|
F15_M30H_CPUS, |
|
F15_M60H_CPUS, |
|
F16_CPUS, |
|
F16_M30H_CPUS, |
|
F17_CPUS, |
|
F17_M10H_CPUS, |
|
F17_M30H_CPUS, |
|
F17_M60H_CPUS, |
|
F17_M70H_CPUS, |
|
F19_CPUS, |
|
NUM_FAMILIES, |
|
}; |
|
|
|
/* Error injection control structure */ |
|
struct error_injection { |
|
u32 section; |
|
u32 word; |
|
u32 bit_map; |
|
}; |
|
|
|
/* low and high part of PCI config space regs */ |
|
struct reg_pair { |
|
u32 lo, hi; |
|
}; |
|
|
|
/* |
|
* See F1x[1, 0][7C:40] DRAM Base/Limit Registers |
|
*/ |
|
struct dram_range { |
|
struct reg_pair base; |
|
struct reg_pair lim; |
|
}; |
|
|
|
/* A DCT chip selects collection */ |
|
struct chip_select { |
|
u32 csbases[NUM_CHIPSELECTS]; |
|
u32 csbases_sec[NUM_CHIPSELECTS]; |
|
u8 b_cnt; |
|
|
|
u32 csmasks[NUM_CHIPSELECTS]; |
|
u32 csmasks_sec[NUM_CHIPSELECTS]; |
|
u8 m_cnt; |
|
}; |
|
|
|
struct amd64_umc { |
|
u32 dimm_cfg; /* DIMM Configuration reg */ |
|
u32 umc_cfg; /* Configuration reg */ |
|
u32 sdp_ctrl; /* SDP Control reg */ |
|
u32 ecc_ctrl; /* DRAM ECC Control reg */ |
|
u32 umc_cap_hi; /* Capabilities High reg */ |
|
}; |
|
|
|
struct amd64_pvt { |
|
struct low_ops *ops; |
|
|
|
/* pci_device handles which we utilize */ |
|
struct pci_dev *F0, *F1, *F2, *F3, *F6; |
|
|
|
u16 mc_node_id; /* MC index of this MC node */ |
|
u8 fam; /* CPU family */ |
|
u8 model; /* ... model */ |
|
u8 stepping; /* ... stepping */ |
|
|
|
int ext_model; /* extended model value of this node */ |
|
int channel_count; |
|
|
|
/* Raw registers */ |
|
u32 dclr0; /* DRAM Configuration Low DCT0 reg */ |
|
u32 dclr1; /* DRAM Configuration Low DCT1 reg */ |
|
u32 dchr0; /* DRAM Configuration High DCT0 reg */ |
|
u32 dchr1; /* DRAM Configuration High DCT1 reg */ |
|
u32 nbcap; /* North Bridge Capabilities */ |
|
u32 nbcfg; /* F10 North Bridge Configuration */ |
|
u32 ext_nbcfg; /* Extended F10 North Bridge Configuration */ |
|
u32 dhar; /* DRAM Hoist reg */ |
|
u32 dbam0; /* DRAM Base Address Mapping reg for DCT0 */ |
|
u32 dbam1; /* DRAM Base Address Mapping reg for DCT1 */ |
|
|
|
/* one for each DCT/UMC */ |
|
struct chip_select csels[NUM_CONTROLLERS]; |
|
|
|
/* DRAM base and limit pairs F1x[78,70,68,60,58,50,48,40] */ |
|
struct dram_range ranges[DRAM_RANGES]; |
|
|
|
u64 top_mem; /* top of memory below 4GB */ |
|
u64 top_mem2; /* top of memory above 4GB */ |
|
|
|
u32 dct_sel_lo; /* DRAM Controller Select Low */ |
|
u32 dct_sel_hi; /* DRAM Controller Select High */ |
|
u32 online_spare; /* On-Line spare Reg */ |
|
|
|
/* x4, x8, or x16 syndromes in use */ |
|
u8 ecc_sym_sz; |
|
|
|
/* place to store error injection parameters prior to issue */ |
|
struct error_injection injection; |
|
|
|
/* cache the dram_type */ |
|
enum mem_type dram_type; |
|
|
|
struct amd64_umc *umc; /* UMC registers */ |
|
}; |
|
|
|
enum err_codes { |
|
DECODE_OK = 0, |
|
ERR_NODE = -1, |
|
ERR_CSROW = -2, |
|
ERR_CHANNEL = -3, |
|
ERR_SYND = -4, |
|
ERR_NORM_ADDR = -5, |
|
}; |
|
|
|
struct err_info { |
|
int err_code; |
|
struct mem_ctl_info *src_mci; |
|
int csrow; |
|
int channel; |
|
u16 syndrome; |
|
u32 page; |
|
u32 offset; |
|
}; |
|
|
|
static inline u32 get_umc_base(u8 channel) |
|
{ |
|
/* chY: 0xY50000 */ |
|
return 0x50000 + (channel << 20); |
|
} |
|
|
|
static inline u64 get_dram_base(struct amd64_pvt *pvt, u8 i) |
|
{ |
|
u64 addr = ((u64)pvt->ranges[i].base.lo & 0xffff0000) << 8; |
|
|
|
if (boot_cpu_data.x86 == 0xf) |
|
return addr; |
|
|
|
return (((u64)pvt->ranges[i].base.hi & 0x000000ff) << 40) | addr; |
|
} |
|
|
|
static inline u64 get_dram_limit(struct amd64_pvt *pvt, u8 i) |
|
{ |
|
u64 lim = (((u64)pvt->ranges[i].lim.lo & 0xffff0000) << 8) | 0x00ffffff; |
|
|
|
if (boot_cpu_data.x86 == 0xf) |
|
return lim; |
|
|
|
return (((u64)pvt->ranges[i].lim.hi & 0x000000ff) << 40) | lim; |
|
} |
|
|
|
static inline u16 extract_syndrome(u64 status) |
|
{ |
|
return ((status >> 47) & 0xff) | ((status >> 16) & 0xff00); |
|
} |
|
|
|
static inline u8 dct_sel_interleave_addr(struct amd64_pvt *pvt) |
|
{ |
|
if (pvt->fam == 0x15 && pvt->model >= 0x30) |
|
return (((pvt->dct_sel_hi >> 9) & 0x1) << 2) | |
|
((pvt->dct_sel_lo >> 6) & 0x3); |
|
|
|
return ((pvt)->dct_sel_lo >> 6) & 0x3; |
|
} |
|
/* |
|
* per-node ECC settings descriptor |
|
*/ |
|
struct ecc_settings { |
|
u32 old_nbctl; |
|
bool nbctl_valid; |
|
|
|
struct flags { |
|
unsigned long nb_mce_enable:1; |
|
unsigned long nb_ecc_prev:1; |
|
} flags; |
|
}; |
|
|
|
/* |
|
* Each of the PCI Device IDs types have their own set of hardware accessor |
|
* functions and per device encoding/decoding logic. |
|
*/ |
|
struct low_ops { |
|
int (*early_channel_count) (struct amd64_pvt *pvt); |
|
void (*map_sysaddr_to_csrow) (struct mem_ctl_info *mci, u64 sys_addr, |
|
struct err_info *); |
|
int (*dbam_to_cs) (struct amd64_pvt *pvt, u8 dct, |
|
unsigned cs_mode, int cs_mask_nr); |
|
}; |
|
|
|
struct amd64_family_type { |
|
const char *ctl_name; |
|
u16 f0_id, f1_id, f2_id, f6_id; |
|
/* Maximum number of memory controllers per die/node. */ |
|
u8 max_mcs; |
|
struct low_ops ops; |
|
}; |
|
|
|
int __amd64_read_pci_cfg_dword(struct pci_dev *pdev, int offset, |
|
u32 *val, const char *func); |
|
int __amd64_write_pci_cfg_dword(struct pci_dev *pdev, int offset, |
|
u32 val, const char *func); |
|
|
|
#define amd64_read_pci_cfg(pdev, offset, val) \ |
|
__amd64_read_pci_cfg_dword(pdev, offset, val, __func__) |
|
|
|
#define amd64_write_pci_cfg(pdev, offset, val) \ |
|
__amd64_write_pci_cfg_dword(pdev, offset, val, __func__) |
|
|
|
#define to_mci(k) container_of(k, struct mem_ctl_info, dev) |
|
|
|
/* Injection helpers */ |
|
static inline void disable_caches(void *dummy) |
|
{ |
|
write_cr0(read_cr0() | X86_CR0_CD); |
|
wbinvd(); |
|
} |
|
|
|
static inline void enable_caches(void *dummy) |
|
{ |
|
write_cr0(read_cr0() & ~X86_CR0_CD); |
|
} |
|
|
|
static inline u8 dram_intlv_en(struct amd64_pvt *pvt, unsigned int i) |
|
{ |
|
if (pvt->fam == 0x15 && pvt->model >= 0x30) { |
|
u32 tmp; |
|
amd64_read_pci_cfg(pvt->F1, DRAM_CONT_LIMIT, &tmp); |
|
return (u8) tmp & 0xF; |
|
} |
|
return (u8) (pvt->ranges[i].base.lo >> 8) & 0x7; |
|
} |
|
|
|
static inline u8 dhar_valid(struct amd64_pvt *pvt) |
|
{ |
|
if (pvt->fam == 0x15 && pvt->model >= 0x30) { |
|
u32 tmp; |
|
amd64_read_pci_cfg(pvt->F1, DRAM_CONT_BASE, &tmp); |
|
return (tmp >> 1) & BIT(0); |
|
} |
|
return (pvt)->dhar & BIT(0); |
|
} |
|
|
|
static inline u32 dct_sel_baseaddr(struct amd64_pvt *pvt) |
|
{ |
|
if (pvt->fam == 0x15 && pvt->model >= 0x30) { |
|
u32 tmp; |
|
amd64_read_pci_cfg(pvt->F1, DRAM_CONT_BASE, &tmp); |
|
return (tmp >> 11) & 0x1FFF; |
|
} |
|
return (pvt)->dct_sel_lo & 0xFFFFF800; |
|
}
|
|
|