Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Something went wrong. Try again.
C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888/* * Generic EDAC defs * * Author: Dave Jiang <djiang@mvista.com> * * 2006-2008 (c) MontaVista Software, Inc. This file is licensed under * the terms of the GNU General Public License version 2. This program * is licensed "as is" without any warranty of any kind, whether express * or implied. * */#ifndef _LINUX_EDAC_H_#define _LINUX_EDAC_H_
#include <linux/atomic.h>#include <linux/device.h>#include <linux/completion.h>#include <linux/workqueue.h>#include <linux/debugfs.h>#include <linux/numa.h>
#define EDAC_DEVICE_NAME_LEN 31
struct device;
#define EDAC_OPSTATE_INVAL -1#define EDAC_OPSTATE_POLL 0#define EDAC_OPSTATE_NMI 1#define EDAC_OPSTATE_INT 2
extern int edac_op_state;
const struct bus_type *edac_get_sysfs_subsys(void);
static inline void opstate_init(void){ switch (edac_op_state) { case EDAC_OPSTATE_POLL: case EDAC_OPSTATE_NMI: break; default: edac_op_state = EDAC_OPSTATE_POLL; } return;}
/* Max length of a DIMM label*/#define EDAC_MC_LABEL_LEN 31
/* Maximum size of the location string */#define LOCATION_SIZE 256
/* Defines the maximum number of labels that can be reported */#define EDAC_MAX_LABELS 8
/* String used to join two or more labels */#define OTHER_LABEL " or "
/** * enum dev_type - describe the type of memory DRAM chips used at the stick * @DEV_UNKNOWN: Can't be determined, or MC doesn't support detect it * @DEV_X1: 1 bit for data * @DEV_X2: 2 bits for data * @DEV_X4: 4 bits for data * @DEV_X8: 8 bits for data * @DEV_X16: 16 bits for data * @DEV_X32: 32 bits for data * @DEV_X64: 64 bits for data * * Typical values are x4 and x8. */enum dev_type { DEV_UNKNOWN = 0, DEV_X1, DEV_X2, DEV_X4, DEV_X8, DEV_X16, DEV_X32, /* Do these parts exist? */ DEV_X64 /* Do these parts exist? */};
#define DEV_FLAG_UNKNOWN BIT(DEV_UNKNOWN)#define DEV_FLAG_X1 BIT(DEV_X1)#define DEV_FLAG_X2 BIT(DEV_X2)#define DEV_FLAG_X4 BIT(DEV_X4)#define DEV_FLAG_X8 BIT(DEV_X8)#define DEV_FLAG_X16 BIT(DEV_X16)#define DEV_FLAG_X32 BIT(DEV_X32)#define DEV_FLAG_X64 BIT(DEV_X64)
/** * enum hw_event_mc_err_type - type of the detected error * * @HW_EVENT_ERR_CORRECTED: Corrected Error - Indicates that an ECC * corrected error was detected * @HW_EVENT_ERR_UNCORRECTED: Uncorrected Error - Indicates an error that * can't be corrected by ECC, but it is not * fatal (maybe it is on an unused memory area, * or the memory controller could recover from * it for example, by re-trying the operation). * @HW_EVENT_ERR_DEFERRED: Deferred Error - Indicates an uncorrectable * error whose handling is not urgent. This could * be due to hardware data poisoning where the * system can continue operation until the poisoned * data is consumed. Preemptive measures may also * be taken, e.g. offlining pages, etc. * @HW_EVENT_ERR_FATAL: Fatal Error - Uncorrected error that could not * be recovered. * @HW_EVENT_ERR_INFO: Informational - The CPER spec defines a forth * type of error: informational logs. */enum hw_event_mc_err_type { HW_EVENT_ERR_CORRECTED, HW_EVENT_ERR_UNCORRECTED, HW_EVENT_ERR_DEFERRED, HW_EVENT_ERR_FATAL, HW_EVENT_ERR_INFO,};
static inline char *mc_event_error_type(const unsigned int err_type){ switch (err_type) { case HW_EVENT_ERR_CORRECTED: return "Corrected"; case HW_EVENT_ERR_UNCORRECTED: return "Uncorrected"; case HW_EVENT_ERR_DEFERRED: return "Deferred"; case HW_EVENT_ERR_FATAL: return "Fatal"; default: case HW_EVENT_ERR_INFO: return "Info"; }}
/** * enum mem_type - memory types. For a more detailed reference, please see * http://en.wikipedia.org/wiki/DRAM * * @MEM_EMPTY: Empty csrow * @MEM_RESERVED: Reserved csrow type * @MEM_UNKNOWN: Unknown csrow type * @MEM_FPM: FPM - Fast Page Mode, used on systems up to 1995. * @MEM_EDO: EDO - Extended data out, used on systems up to 1998. * @MEM_BEDO: BEDO - Burst Extended data out, an EDO variant. * @MEM_SDR: SDR - Single data rate SDRAM * http://en.wikipedia.org/wiki/Synchronous_dynamic_random-access_memory * They use 3 pins for chip select: Pins 0 and 2 are * for rank 0; pins 1 and 3 are for rank 1, if the memory * is dual-rank. * @MEM_RDR: Registered SDR SDRAM * @MEM_DDR: Double data rate SDRAM * http://en.wikipedia.org/wiki/DDR_SDRAM * @MEM_RDDR: Registered Double data rate SDRAM * This is a variant of the DDR memories. * A registered memory has a buffer inside it, hiding * part of the memory details to the memory controller. * @MEM_RMBS: Rambus DRAM, used on a few Pentium III/IV controllers. * @MEM_DDR2: DDR2 RAM, as described at JEDEC JESD79-2F. * Those memories are labeled as "PC2-" instead of "PC" to * differentiate from DDR. * @MEM_FB_DDR2: Fully-Buffered DDR2, as described at JEDEC Std No. 205 * and JESD206. * Those memories are accessed per DIMM slot, and not by * a chip select signal. * @MEM_RDDR2: Registered DDR2 RAM * This is a variant of the DDR2 memories. * @MEM_XDR: Rambus XDR * It is an evolution of the original RAMBUS memories, * created to compete with DDR2. Weren't used on any * x86 arch, but cell_edac PPC memory controller uses it. * @MEM_DDR3: DDR3 RAM * @MEM_RDDR3: Registered DDR3 RAM * This is a variant of the DDR3 memories. * @MEM_LRDDR3: Load-Reduced DDR3 memory. * @MEM_LPDDR3: Low-Power DDR3 memory. * @MEM_DDR4: Unbuffered DDR4 RAM * @MEM_RDDR4: Registered DDR4 RAM * This is a variant of the DDR4 memories. * @MEM_LRDDR4: Load-Reduced DDR4 memory. * @MEM_LPDDR4: Low-Power DDR4 memory. * @MEM_DDR5: Unbuffered DDR5 RAM * @MEM_RDDR5: Registered DDR5 RAM * @MEM_LRDDR5: Load-Reduced DDR5 memory. * @MEM_LPDDR5: Low-Power DDR5 memory. * @MEM_NVDIMM: Non-volatile RAM * @MEM_WIO2: Wide I/O 2. * @MEM_HBM2: High bandwidth Memory Gen 2. * @MEM_HBM3: High bandwidth Memory Gen 3. */enum mem_type { MEM_EMPTY = 0, MEM_RESERVED, MEM_UNKNOWN, MEM_FPM, MEM_EDO, MEM_BEDO, MEM_SDR, MEM_RDR, MEM_DDR, MEM_RDDR, MEM_RMBS, MEM_DDR2, MEM_FB_DDR2, MEM_RDDR2, MEM_XDR, MEM_DDR3, MEM_RDDR3, MEM_LRDDR3, MEM_LPDDR3, MEM_DDR4, MEM_RDDR4, MEM_LRDDR4, MEM_LPDDR4, MEM_DDR5, MEM_RDDR5, MEM_LRDDR5, MEM_LPDDR5, MEM_NVDIMM, MEM_WIO2, MEM_HBM2, MEM_HBM3,};
#define MEM_FLAG_EMPTY BIT(MEM_EMPTY)#define MEM_FLAG_RESERVED BIT(MEM_RESERVED)#define MEM_FLAG_UNKNOWN BIT(MEM_UNKNOWN)#define MEM_FLAG_FPM BIT(MEM_FPM)#define MEM_FLAG_EDO BIT(MEM_EDO)#define MEM_FLAG_BEDO BIT(MEM_BEDO)#define MEM_FLAG_SDR BIT(MEM_SDR)#define MEM_FLAG_RDR BIT(MEM_RDR)#define MEM_FLAG_DDR BIT(MEM_DDR)#define MEM_FLAG_RDDR BIT(MEM_RDDR)#define MEM_FLAG_RMBS BIT(MEM_RMBS)#define MEM_FLAG_DDR2 BIT(MEM_DDR2)#define MEM_FLAG_FB_DDR2 BIT(MEM_FB_DDR2)#define MEM_FLAG_RDDR2 BIT(MEM_RDDR2)#define MEM_FLAG_XDR BIT(MEM_XDR)#define MEM_FLAG_DDR3 BIT(MEM_DDR3)#define MEM_FLAG_RDDR3 BIT(MEM_RDDR3)#define MEM_FLAG_LPDDR3 BIT(MEM_LPDDR3)#define MEM_FLAG_DDR4 BIT(MEM_DDR4)#define MEM_FLAG_RDDR4 BIT(MEM_RDDR4)#define MEM_FLAG_LRDDR4 BIT(MEM_LRDDR4)#define MEM_FLAG_LPDDR4 BIT(MEM_LPDDR4)#define MEM_FLAG_DDR5 BIT(MEM_DDR5)#define MEM_FLAG_RDDR5 BIT(MEM_RDDR5)#define MEM_FLAG_LRDDR5 BIT(MEM_LRDDR5)#define MEM_FLAG_LPDDR5 BIT(MEM_LPDDR5)#define MEM_FLAG_NVDIMM BIT(MEM_NVDIMM)#define MEM_FLAG_WIO2 BIT(MEM_WIO2)#define MEM_FLAG_HBM2 BIT(MEM_HBM2)#define MEM_FLAG_HBM3 BIT(MEM_HBM3)
/** * enum edac_type - Error Detection and Correction capabilities and mode * @EDAC_UNKNOWN: Unknown if ECC is available * @EDAC_NONE: Doesn't support ECC * @EDAC_RESERVED: Reserved ECC type * @EDAC_PARITY: Detects parity errors * @EDAC_EC: Error Checking - no correction * @EDAC_SECDED: Single bit error correction, Double detection * @EDAC_S2ECD2ED: Chipkill x2 devices - do these exist? * @EDAC_S4ECD4ED: Chipkill x4 devices * @EDAC_S8ECD8ED: Chipkill x8 devices * @EDAC_S16ECD16ED: Chipkill x16 devices */enum edac_type { EDAC_UNKNOWN = 0, EDAC_NONE, EDAC_RESERVED, EDAC_PARITY, EDAC_EC, EDAC_SECDED, EDAC_S2ECD2ED, EDAC_S4ECD4ED, EDAC_S8ECD8ED, EDAC_S16ECD16ED,};
#define EDAC_FLAG_UNKNOWN BIT(EDAC_UNKNOWN)#define EDAC_FLAG_NONE BIT(EDAC_NONE)#define EDAC_FLAG_PARITY BIT(EDAC_PARITY)#define EDAC_FLAG_EC BIT(EDAC_EC)#define EDAC_FLAG_SECDED BIT(EDAC_SECDED)#define EDAC_FLAG_S2ECD2ED BIT(EDAC_S2ECD2ED)#define EDAC_FLAG_S4ECD4ED BIT(EDAC_S4ECD4ED)#define EDAC_FLAG_S8ECD8ED BIT(EDAC_S8ECD8ED)#define EDAC_FLAG_S16ECD16ED BIT(EDAC_S16ECD16ED)
/** * enum scrub_type - scrubbing capabilities * @SCRUB_UNKNOWN: Unknown if scrubber is available * @SCRUB_NONE: No scrubber * @SCRUB_SW_PROG: SW progressive (sequential) scrubbing * @SCRUB_SW_SRC: Software scrub only errors * @SCRUB_SW_PROG_SRC: Progressive software scrub from an error * @SCRUB_SW_TUNABLE: Software scrub frequency is tunable * @SCRUB_HW_PROG: HW progressive (sequential) scrubbing * @SCRUB_HW_SRC: Hardware scrub only errors * @SCRUB_HW_PROG_SRC: Progressive hardware scrub from an error * @SCRUB_HW_TUNABLE: Hardware scrub frequency is tunable */enum scrub_type { SCRUB_UNKNOWN = 0, SCRUB_NONE, SCRUB_SW_PROG, SCRUB_SW_SRC, SCRUB_SW_PROG_SRC, SCRUB_SW_TUNABLE, SCRUB_HW_PROG, SCRUB_HW_SRC, SCRUB_HW_PROG_SRC, SCRUB_HW_TUNABLE};
#define SCRUB_FLAG_SW_PROG BIT(SCRUB_SW_PROG)#define SCRUB_FLAG_SW_SRC BIT(SCRUB_SW_SRC)#define SCRUB_FLAG_SW_PROG_SRC BIT(SCRUB_SW_PROG_SRC)#define SCRUB_FLAG_SW_TUN BIT(SCRUB_SW_SCRUB_TUNABLE)#define SCRUB_FLAG_HW_PROG BIT(SCRUB_HW_PROG)#define SCRUB_FLAG_HW_SRC BIT(SCRUB_HW_SRC)#define SCRUB_FLAG_HW_PROG_SRC BIT(SCRUB_HW_PROG_SRC)#define SCRUB_FLAG_HW_TUN BIT(SCRUB_HW_TUNABLE)
/* FIXME - should have notify capabilities: NMI, LOG, PROC, etc */
/* EDAC internal operation states */#define OP_ALLOC 0x100#define OP_RUNNING_POLL 0x201#define OP_RUNNING_INTERRUPT 0x202#define OP_RUNNING_POLL_INTR 0x203#define OP_OFFLINE 0x300
/** * enum edac_mc_layer_type - memory controller hierarchy layer * * @EDAC_MC_LAYER_BRANCH: memory layer is named "branch" * @EDAC_MC_LAYER_CHANNEL: memory layer is named "channel" * @EDAC_MC_LAYER_SLOT: memory layer is named "slot" * @EDAC_MC_LAYER_CHIP_SELECT: memory layer is named "chip select" * @EDAC_MC_LAYER_ALL_MEM: memory layout is unknown. All memory is mapped * as a single memory area. This is used when * retrieving errors from a firmware driven driver. * * This enum is used by the drivers to tell edac_mc_sysfs what name should * be used when describing a memory stick location. */enum edac_mc_layer_type { EDAC_MC_LAYER_BRANCH, EDAC_MC_LAYER_CHANNEL, EDAC_MC_LAYER_SLOT, EDAC_MC_LAYER_CHIP_SELECT, EDAC_MC_LAYER_ALL_MEM,};
/** * struct edac_mc_layer - describes the memory controller hierarchy * @type: layer type * @size: number of components per layer. For example, * if the channel layer has two channels, size = 2 * @is_virt_csrow: This layer is part of the "csrow" when old API * compatibility mode is enabled. Otherwise, it is * a channel */struct edac_mc_layer { enum edac_mc_layer_type type; unsigned size; bool is_virt_csrow;};
/* * Maximum number of layers used by the memory controller to uniquely * identify a single memory stick. * NOTE: Changing this constant requires not only to change the constant * below, but also to change the existing code at the core, as there are * some code there that are optimized for 3 layers. */#define EDAC_MAX_LAYERS 3
struct dimm_info { struct device dev;
char label[EDAC_MC_LABEL_LEN + 1]; /* DIMM label on motherboard */
/* Memory location data */ unsigned int location[EDAC_MAX_LAYERS];
struct mem_ctl_info *mci; /* the parent */ unsigned int idx; /* index within the parent dimm array */
u32 grain; /* granularity of reported error in bytes */ enum dev_type dtype; /* memory device type */ enum mem_type mtype; /* memory dimm type */ enum edac_type edac_mode; /* EDAC mode for this dimm */
u32 nr_pages; /* number of pages on this dimm */
unsigned int csrow, cschannel; /* Points to the old API data */
u16 smbios_handle; /* Handle for SMBIOS type 17 */
u32 ce_count; u32 ue_count;};
/** * struct rank_info - contains the information for one DIMM rank * * @chan_idx: channel number where the rank is (typically, 0 or 1) * @ce_count: number of correctable errors for this rank * @csrow: A pointer to the chip select row structure (the parent * structure). The location of the rank is given by * the (csrow->csrow_idx, chan_idx) vector. * @dimm: A pointer to the DIMM structure, where the DIMM label * information is stored. * * FIXME: Currently, the EDAC core model will assume one DIMM per rank. * This is a bad assumption, but it makes this patch easier. Later * patches in this series will fix this issue. */struct rank_info { int chan_idx; struct csrow_info *csrow; struct dimm_info *dimm;
u32 ce_count; /* Correctable Errors for this csrow */};
struct csrow_info { struct device dev;
/* Used only by edac_mc_find_csrow_by_page() */ unsigned long first_page; /* first page number in csrow */ unsigned long last_page; /* last page number in csrow */ unsigned long page_mask; /* used for interleaving - * 0UL for non intlv */
int csrow_idx; /* the chip-select row */
u32 ue_count; /* Uncorrectable Errors for this csrow */ u32 ce_count; /* Correctable Errors for this csrow */
struct mem_ctl_info *mci; /* the parent */
/* channel information for this csrow */ u32 nr_channels; struct rank_info **channels;};
/* * struct errcount_attribute - used to store the several error counts */struct errcount_attribute_data { int n_layers; int pos[EDAC_MAX_LAYERS]; int layer0, layer1, layer2;};
/** * struct edac_raw_error_desc - Raw error report structure * @grain: minimum granularity for an error report, in bytes * @error_count: number of errors of the same type * @type: severity of the error (CE/UE/Fatal) * @top_layer: top layer of the error (layer[0]) * @mid_layer: middle layer of the error (layer[1]) * @low_layer: low layer of the error (layer[2]) * @page_frame_number: page where the error happened * @offset_in_page: page offset * @syndrome: syndrome of the error (or 0 if unknown or if * the syndrome is not applicable) * @msg: error message * @location: location of the error * @label: label of the affected DIMM(s) * @other_detail: other driver-specific detail about the error */struct edac_raw_error_desc { char location[LOCATION_SIZE]; char label[(EDAC_MC_LABEL_LEN + 1 + sizeof(OTHER_LABEL)) * EDAC_MAX_LABELS]; long grain;
u16 error_count; enum hw_event_mc_err_type type; int top_layer; int mid_layer; int low_layer; unsigned long page_frame_number; unsigned long offset_in_page; unsigned long syndrome; const char *msg; const char *other_detail;};
/* MEMORY controller information structure */struct mem_ctl_info { struct device dev; const struct bus_type *bus;
struct list_head link; /* for global list of mem_ctl_info structs */
struct module *owner; /* Module owner of this control struct */
unsigned long mtype_cap; /* memory types supported by mc */ unsigned long edac_ctl_cap; /* Mem controller EDAC capabilities */ unsigned long edac_cap; /* configuration capabilities - this is * closely related to edac_ctl_cap. The * difference is that the controller may be * capable of s4ecd4ed which would be listed * in edac_ctl_cap, but if channels aren't * capable of s4ecd4ed then the edac_cap would * not have that capability. */ unsigned long scrub_cap; /* chipset scrub capabilities */ enum scrub_type scrub_mode; /* current scrub mode */
/* Translates sdram memory scrub rate given in bytes/sec to the internal representation and configures whatever else needs to be configured. */ int (*set_sdram_scrub_rate) (struct mem_ctl_info * mci, u32 bw);
/* Get the current sdram memory scrub rate from the internal representation and converts it to the closest matching bandwidth in bytes/sec. */ int (*get_sdram_scrub_rate) (struct mem_ctl_info * mci);
/* pointer to edac checking routine */ void (*edac_check) (struct mem_ctl_info * mci);
/* * Remaps memory pages: controller pages to physical pages. * For most MC's, this will be NULL. */ /* FIXME - why not send the phys page to begin with? */ unsigned long (*ctl_page_to_phys) (struct mem_ctl_info * mci, unsigned long page); int mc_idx; struct csrow_info **csrows; unsigned int nr_csrows, num_cschannel;
bool csbased;
/* * DIMM info. Will eventually remove the entire csrows_info some day */ unsigned int tot_dimms; struct dimm_info **dimms;
/* * FIXME - what about controllers on other busses? - IDs must be * unique. dev pointer should be sufficiently unique, but * BUS:SLOT.FUNC numbers may not be unique. */ struct device *pdev; const char *mod_name; const char *ctl_name; const char *dev_name; void *pvt_info; unsigned long start_time; /* mci load start time (in jiffies) */
/* * drivers shouldn't access those fields directly, as the core * already handles that. */ u32 ce_noinfo_count, ue_noinfo_count; u32 ue_mc, ce_mc;
struct completion complete;
/* Additional top controller level attributes, but specified * by the low level driver. * * Set by the low level driver to provide attributes at the * controller level. * An array of structures, NULL terminated * * If attributes are desired, then set to array of attributes * If no attributes are desired, leave NULL */ const struct mcidev_sysfs_attribute *mc_driver_sysfs_attributes;
/* work struct for this MC */ struct delayed_work work;
/* * Used to report an error - by being at the global struct * makes the memory allocated by the EDAC core */ struct edac_raw_error_desc error_desc;
/* the internal state of this controller instance */ int op_state;
struct dentry *debugfs;
/* * Memory Controller hierarchy * * There are basically two types of memory controller: the ones that * sees memory sticks ("dimms"), and the ones that sees memory ranks. * All old memory controllers enumerate memories per rank, but most * of the recent drivers enumerate memories per DIMM, instead. * When the memory controller is per rank, csbased is true. */ unsigned int n_layers; struct edac_mc_layer layers[] __counted_by(n_layers);};
#define mci_for_each_dimm(mci, dimm) \ for ((dimm) = (mci)->dimms[0]; \ (dimm); \ (dimm) = (dimm)->idx + 1 < (mci)->tot_dimms \ ? (mci)->dimms[(dimm)->idx + 1] \ : NULL)
/** * edac_get_dimm - Get DIMM info from a memory controller given by * [layer0,layer1,layer2] position * * @mci: MC descriptor struct mem_ctl_info * @layer0: layer0 position * @layer1: layer1 position. Unused if n_layers < 2 * @layer2: layer2 position. Unused if n_layers < 3 * * For 1 layer, this function returns "dimms[layer0]"; * * For 2 layers, this function is similar to allocating a two-dimensional * array and returning "dimms[layer0][layer1]"; * * For 3 layers, this function is similar to allocating a tri-dimensional * array and returning "dimms[layer0][layer1][layer2]"; */static inline struct dimm_info *edac_get_dimm(struct mem_ctl_info *mci, int layer0, int layer1, int layer2){ int index;
if (layer0 < 0 || (mci->n_layers > 1 && layer1 < 0) || (mci->n_layers > 2 && layer2 < 0)) return NULL;
index = layer0;
if (mci->n_layers > 1) index = index * mci->layers[1].size + layer1;
if (mci->n_layers > 2) index = index * mci->layers[2].size + layer2;
if (index < 0 || index >= mci->tot_dimms) return NULL;
if (WARN_ON_ONCE(mci->dimms[index]->idx != index)) return NULL;
return mci->dimms[index];}
#define EDAC_FEAT_NAME_LEN 128
/* RAS feature type */enum edac_dev_feat { RAS_FEAT_SCRUB, RAS_FEAT_ECS, RAS_FEAT_MEM_REPAIR, RAS_FEAT_MAX};
/** * struct edac_scrub_ops - scrub device operations (all elements optional) * @read_addr: read base address of scrubbing range. * @read_size: read offset of scrubbing range. * @write_addr: set base address of the scrubbing range. * @write_size: set offset of the scrubbing range. * @get_enabled_bg: check if currently performing background scrub. * @set_enabled_bg: start or stop a bg-scrub. * @get_min_cycle: get minimum supported scrub cycle duration in seconds. * @get_max_cycle: get maximum supported scrub cycle duration in seconds. * @get_cycle_duration: get current scrub cycle duration in seconds. * @set_cycle_duration: set current scrub cycle duration in seconds. */struct edac_scrub_ops { int (*read_addr)(struct device *dev, void *drv_data, u64 *base); int (*read_size)(struct device *dev, void *drv_data, u64 *size); int (*write_addr)(struct device *dev, void *drv_data, u64 base); int (*write_size)(struct device *dev, void *drv_data, u64 size); int (*get_enabled_bg)(struct device *dev, void *drv_data, bool *enable); int (*set_enabled_bg)(struct device *dev, void *drv_data, bool enable); int (*get_min_cycle)(struct device *dev, void *drv_data, u32 *min); int (*get_max_cycle)(struct device *dev, void *drv_data, u32 *max); int (*get_cycle_duration)(struct device *dev, void *drv_data, u32 *cycle); int (*set_cycle_duration)(struct device *dev, void *drv_data, u32 cycle);};
#if IS_ENABLED(CONFIG_EDAC_SCRUB)int edac_scrub_get_desc(struct device *scrub_dev, const struct attribute_group **attr_groups, u8 instance);#elsestatic inline int edac_scrub_get_desc(struct device *scrub_dev, const struct attribute_group **attr_groups, u8 instance){ return -EOPNOTSUPP; }#endif /* CONFIG_EDAC_SCRUB */
/** * struct edac_ecs_ops - ECS device operations (all elements optional) * @get_log_entry_type: read the log entry type value. * @set_log_entry_type: set the log entry type value. * @get_mode: read the mode value. * @set_mode: set the mode value. * @reset: reset the ECS counter. * @get_threshold: read the threshold count per gigabits of memory cells. * @set_threshold: set the threshold count per gigabits of memory cells. */struct edac_ecs_ops { int (*get_log_entry_type)(struct device *dev, void *drv_data, int fru_id, u32 *val); int (*set_log_entry_type)(struct device *dev, void *drv_data, int fru_id, u32 val); int (*get_mode)(struct device *dev, void *drv_data, int fru_id, u32 *val); int (*set_mode)(struct device *dev, void *drv_data, int fru_id, u32 val); int (*reset)(struct device *dev, void *drv_data, int fru_id, u32 val); int (*get_threshold)(struct device *dev, void *drv_data, int fru_id, u32 *threshold); int (*set_threshold)(struct device *dev, void *drv_data, int fru_id, u32 threshold);};
struct edac_ecs_ex_info { u16 num_media_frus;};
#if IS_ENABLED(CONFIG_EDAC_ECS)int edac_ecs_get_desc(struct device *ecs_dev, const struct attribute_group **attr_groups, u16 num_media_frus);#elsestatic inline int edac_ecs_get_desc(struct device *ecs_dev, const struct attribute_group **attr_groups, u16 num_media_frus){ return -EOPNOTSUPP; }#endif /* CONFIG_EDAC_ECS */
enum edac_mem_repair_type { EDAC_REPAIR_PPR, EDAC_REPAIR_CACHELINE_SPARING, EDAC_REPAIR_ROW_SPARING, EDAC_REPAIR_BANK_SPARING, EDAC_REPAIR_RANK_SPARING, EDAC_REPAIR_MAX};
extern const char * const edac_repair_type[];
enum edac_mem_repair_cmd { EDAC_DO_MEM_REPAIR = 1,};
/** * struct edac_mem_repair_ops - memory repair operations * (all elements are optional except do_repair, set_hpa/set_dpa) * @get_repair_type: get the memory repair type, listed in * enum edac_mem_repair_function. * @get_persist_mode: get the current persist mode. * false - Soft repair type (temporary repair). * true - Hard memory repair type (permanent repair). * @set_persist_mode: set the persist mode of the memory repair instance. * @get_repair_safe_when_in_use: get whether memory media is accessible and * data is retained during repair operation. * @get_hpa: get current host physical address (HPA) of memory to repair. * @set_hpa: set host physical address (HPA) of memory to repair. * @get_min_hpa: get the minimum supported host physical address (HPA). * @get_max_hpa: get the maximum supported host physical address (HPA). * @get_dpa: get current device physical address (DPA) of memory to repair. * @set_dpa: set device physical address (DPA) of memory to repair. * In some states of system configuration (e.g. before address decoders * have been configured), memory devices (e.g. CXL) may not have an active * mapping in the host physical address map. As such, the memory * to repair must be identified by a device specific physical addressing * scheme using a device physical address(DPA). The DPA and other control * attributes to use for the repair operations will be presented in related * error records. * @get_min_dpa: get the minimum supported device physical address (DPA). * @get_max_dpa: get the maximum supported device physical address (DPA). * @get_nibble_mask: get current nibble mask of memory to repair. * @set_nibble_mask: set nibble mask of memory to repair. * @get_bank_group: get current bank group of memory to repair. * @set_bank_group: set bank group of memory to repair. * @get_bank: get current bank of memory to repair. * @set_bank: set bank of memory to repair. * @get_rank: get current rank of memory to repair. * @set_rank: set rank of memory to repair. * @get_row: get current row of memory to repair. * @set_row: set row of memory to repair. * @get_column: get current column of memory to repair. * @set_column: set column of memory to repair. * @get_channel: get current channel of memory to repair. * @set_channel: set channel of memory to repair. * @get_sub_channel: get current subchannel of memory to repair. * @set_sub_channel: set subchannel of memory to repair. * @do_repair: Issue memory repair operation for the HPA/DPA and * other control attributes set for the memory to repair. * * All elements are optional except do_repair and at least one of set_hpa/set_dpa. */struct edac_mem_repair_ops { int (*get_repair_type)(struct device *dev, void *drv_data, const char **type); int (*get_persist_mode)(struct device *dev, void *drv_data, bool *persist); int (*set_persist_mode)(struct device *dev, void *drv_data, bool persist); int (*get_repair_safe_when_in_use)(struct device *dev, void *drv_data, bool *safe); int (*get_hpa)(struct device *dev, void *drv_data, u64 *hpa); int (*set_hpa)(struct device *dev, void *drv_data, u64 hpa); int (*get_min_hpa)(struct device *dev, void *drv_data, u64 *hpa); int (*get_max_hpa)(struct device *dev, void *drv_data, u64 *hpa); int (*get_dpa)(struct device *dev, void *drv_data, u64 *dpa); int (*set_dpa)(struct device *dev, void *drv_data, u64 dpa); int (*get_min_dpa)(struct device *dev, void *drv_data, u64 *dpa); int (*get_max_dpa)(struct device *dev, void *drv_data, u64 *dpa); int (*get_nibble_mask)(struct device *dev, void *drv_data, u32 *val); int (*set_nibble_mask)(struct device *dev, void *drv_data, u32 val); int (*get_bank_group)(struct device *dev, void *drv_data, u32 *val); int (*set_bank_group)(struct device *dev, void *drv_data, u32 val); int (*get_bank)(struct device *dev, void *drv_data, u32 *val); int (*set_bank)(struct device *dev, void *drv_data, u32 val); int (*get_rank)(struct device *dev, void *drv_data, u32 *val); int (*set_rank)(struct device *dev, void *drv_data, u32 val); int (*get_row)(struct device *dev, void *drv_data, u32 *val); int (*set_row)(struct device *dev, void *drv_data, u32 val); int (*get_column)(struct device *dev, void *drv_data, u32 *val); int (*set_column)(struct device *dev, void *drv_data, u32 val); int (*get_channel)(struct device *dev, void *drv_data, u32 *val); int (*set_channel)(struct device *dev, void *drv_data, u32 val); int (*get_sub_channel)(struct device *dev, void *drv_data, u32 *val); int (*set_sub_channel)(struct device *dev, void *drv_data, u32 val); int (*do_repair)(struct device *dev, void *drv_data, u32 val);};
#if IS_ENABLED(CONFIG_EDAC_MEM_REPAIR)int edac_mem_repair_get_desc(struct device *dev, const struct attribute_group **attr_groups, u8 instance);#elsestatic inline int edac_mem_repair_get_desc(struct device *dev, const struct attribute_group **attr_groups, u8 instance){ return -EOPNOTSUPP; }#endif /* CONFIG_EDAC_MEM_REPAIR */
/* EDAC device feature information structure */struct edac_dev_data { union { const struct edac_scrub_ops *scrub_ops; const struct edac_ecs_ops *ecs_ops; const struct edac_mem_repair_ops *mem_repair_ops; }; u8 instance; void *private;};
struct edac_dev_feat_ctx { struct device dev; void *private; struct edac_dev_data *scrub; struct edac_dev_data ecs; struct edac_dev_data *mem_repair;};
struct edac_dev_feature { enum edac_dev_feat ft_type; u8 instance; union { const struct edac_scrub_ops *scrub_ops; const struct edac_ecs_ops *ecs_ops; const struct edac_mem_repair_ops *mem_repair_ops; }; void *ctx; struct edac_ecs_ex_info ecs_info;};
int edac_dev_register(struct device *parent, char *dev_name, void *parent_pvt_data, int num_features, const struct edac_dev_feature *ras_features);#endif /* _LINUX_EDAC_H_ */