diff options
Diffstat (limited to 'drivers/edac/edac_mc.h')
| -rw-r--r-- | drivers/edac/edac_mc.h | 471 |
1 files changed, 2 insertions, 469 deletions
diff --git a/drivers/edac/edac_mc.h b/drivers/edac/edac_mc.h index fdc811d8967..b92d2720a4d 100644 --- a/drivers/edac/edac_mc.h +++ b/drivers/edac/edac_mc.h @@ -1,476 +1,9 @@ -/* - * MC kernel module - * (C) 2003 Linux Networx (http://lnxi.com) - * This file may be distributed under the terms of the - * GNU General Public License. - * - * Written by Thayne Harbaugh - * Based on work by Dan Hollis <goemon at anime dot net> and others. - * http://www.anime.net/~goemon/linux-ecc/ - * - * NMI handling support added by - * Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com> - * - * $Id: edac_mc.h,v 1.4.2.10 2005/10/05 00:43:44 dsp_llnl Exp $ - * - */ - -#ifndef _EDAC_MC_H_ -#define _EDAC_MC_H_ - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/smp.h> -#include <linux/pci.h> -#include <linux/time.h> -#include <linux/nmi.h> -#include <linux/rcupdate.h> -#include <linux/completion.h> -#include <linux/kobject.h> -#include <linux/platform_device.h> - -#define EDAC_MC_LABEL_LEN 31 -#define MC_PROC_NAME_MAX_LEN 7 - -#if PAGE_SHIFT < 20 -#define PAGES_TO_MiB( pages ) ( ( pages ) >> ( 20 - PAGE_SHIFT ) ) -#else /* PAGE_SHIFT > 20 */ -#define PAGES_TO_MiB( pages ) ( ( pages ) << ( PAGE_SHIFT - 20 ) ) -#endif - -#define edac_printk(level, prefix, fmt, arg...) \ - printk(level "EDAC " prefix ": " fmt, ##arg) - -#define edac_mc_printk(mci, level, fmt, arg...) \ - printk(level "EDAC MC%d: " fmt, mci->mc_idx, ##arg) - -#define edac_mc_chipset_printk(mci, level, prefix, fmt, arg...) \ - printk(level "EDAC " prefix " MC%d: " fmt, mci->mc_idx, ##arg) - -/* prefixes for edac_printk() and edac_mc_printk() */ -#define EDAC_MC "MC" -#define EDAC_PCI "PCI" -#define EDAC_DEBUG "DEBUG" - -#ifdef CONFIG_EDAC_DEBUG -extern int edac_debug_level; - -#define edac_debug_printk(level, fmt, arg...) \ - do { \ - if (level <= edac_debug_level) \ - edac_printk(KERN_DEBUG, EDAC_DEBUG, fmt, ##arg); \ - } while(0) - -#define debugf0( ... ) edac_debug_printk(0, __VA_ARGS__ ) -#define debugf1( ... ) edac_debug_printk(1, __VA_ARGS__ ) -#define debugf2( ... ) edac_debug_printk(2, __VA_ARGS__ ) -#define debugf3( ... ) edac_debug_printk(3, __VA_ARGS__ ) -#define debugf4( ... ) edac_debug_printk(4, __VA_ARGS__ ) - -#else /* !CONFIG_EDAC_DEBUG */ - -#define debugf0( ... ) -#define debugf1( ... ) -#define debugf2( ... ) -#define debugf3( ... ) -#define debugf4( ... ) - -#endif /* !CONFIG_EDAC_DEBUG */ -#define BIT(x) (1 << (x)) - -#define PCI_VEND_DEV(vend, dev) PCI_VENDOR_ID_ ## vend, \ - PCI_DEVICE_ID_ ## vend ## _ ## dev - -#if defined(CONFIG_X86) && defined(CONFIG_PCI) -#define dev_name(dev) pci_name(to_pci_dev(dev)) -#else -#define dev_name(dev) to_platform_device(dev)->name -#endif - -/* memory devices */ -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) - -/* memory types */ -enum mem_type { - MEM_EMPTY = 0, /* Empty csrow */ - MEM_RESERVED, /* Reserved csrow type */ - MEM_UNKNOWN, /* Unknown csrow type */ - MEM_FPM, /* Fast page mode */ - MEM_EDO, /* Extended data out */ - MEM_BEDO, /* Burst Extended data out */ - MEM_SDR, /* Single data rate SDRAM */ - MEM_RDR, /* Registered single data rate SDRAM */ - MEM_DDR, /* Double data rate SDRAM */ - MEM_RDDR, /* Registered Double data rate SDRAM */ - MEM_RMBS, /* Rambus DRAM */ - MEM_DDR2, /* DDR2 RAM */ - MEM_FB_DDR2, /* fully buffered DDR2 */ - MEM_RDDR2, /* Registered DDR2 RAM */ -}; - -#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) - -/* chipset Error Detection and Correction capabilities and mode */ -enum edac_type { - EDAC_UNKNOWN = 0, /* Unknown if ECC is available */ - EDAC_NONE, /* Doesnt 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 */ -}; - -#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) - -/* scrubbing capabilities */ -enum scrub_type { - SCRUB_UNKNOWN = 0, /* 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 */ -}; - -#define SCRUB_FLAG_SW_PROG BIT(SCRUB_SW_PROG) -#define SCRUB_FLAG_SW_SRC BIT(SCRUB_SW_SRC_CORR) -#define SCRUB_FLAG_SW_PROG_SRC BIT(SCRUB_SW_PROG_SRC_CORR) -#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_CORR) -#define SCRUB_FLAG_HW_PROG_SRC BIT(SCRUB_HW_PROG_SRC_CORR) -#define SCRUB_FLAG_HW_TUN BIT(SCRUB_HW_TUNABLE) - -/* FIXME - should have notify capabilities: NMI, LOG, PROC, etc */ /* - * There are several things to be aware of that aren't at all obvious: - * - * - * SOCKETS, SOCKET SETS, BANKS, ROWS, CHIP-SELECT ROWS, CHANNELS, etc.. - * - * These are some of the many terms that are thrown about that don't always - * mean what people think they mean (Inconceivable!). In the interest of - * creating a common ground for discussion, terms and their definitions - * will be established. - * - * Memory devices: The individual chip on a memory stick. These devices - * commonly output 4 and 8 bits each. Grouping several - * of these in parallel provides 64 bits which is common - * for a memory stick. - * - * Memory Stick: A printed circuit board that agregates multiple - * memory devices in parallel. This is the atomic - * memory component that is purchaseable by Joe consumer - * and loaded into a memory socket. - * - * Socket: A physical connector on the motherboard that accepts - * a single memory stick. - * - * Channel: Set of memory devices on a memory stick that must be - * grouped in parallel with one or more additional - * channels from other memory sticks. This parallel - * grouping of the output from multiple channels are - * necessary for the smallest granularity of memory access. - * Some memory controllers are capable of single channel - - * which means that memory sticks can be loaded - * individually. Other memory controllers are only - * capable of dual channel - which means that memory - * sticks must be loaded as pairs (see "socket set"). - * - * Chip-select row: All of the memory devices that are selected together. - * for a single, minimum grain of memory access. - * This selects all of the parallel memory devices across - * all of the parallel channels. Common chip-select rows - * for single channel are 64 bits, for dual channel 128 - * bits. - * - * Single-Ranked stick: A Single-ranked stick has 1 chip-select row of memmory. - * Motherboards commonly drive two chip-select pins to - * a memory stick. A single-ranked stick, will occupy - * only one of those rows. The other will be unused. + * Older .h file for edac, until all drivers are modified * - * Double-Ranked stick: A double-ranked stick has two chip-select rows which - * access different sets of memory devices. The two - * rows cannot be accessed concurrently. - * - * Double-sided stick: DEPRECATED TERM, see Double-Ranked stick. - * A double-sided stick has two chip-select rows which - * access different sets of memory devices. The two - * rows cannot be accessed concurrently. "Double-sided" - * is irrespective of the memory devices being mounted - * on both sides of the memory stick. - * - * Socket set: All of the memory sticks that are required for for - * a single memory access or all of the memory sticks - * spanned by a chip-select row. A single socket set - * has two chip-select rows and if double-sided sticks - * are used these will occupy those chip-select rows. - * - * Bank: This term is avoided because it is unclear when - * needing to distinguish between chip-select rows and - * socket sets. - * - * Controller pages: - * - * Physical pages: - * - * Virtual pages: - * - * - * STRUCTURE ORGANIZATION AND CHOICES - * - * - * - * PS - I enjoyed writing all that about as much as you enjoyed reading it. - */ - -struct channel_info { - int chan_idx; /* channel index */ - u32 ce_count; /* Correctable Errors for this CHANNEL */ - char label[EDAC_MC_LABEL_LEN + 1]; /* DIMM label on motherboard */ - struct csrow_info *csrow; /* the parent */ -}; - -struct csrow_info { - unsigned long first_page; /* first page number in dimm */ - unsigned long last_page; /* last page number in dimm */ - unsigned long page_mask; /* used for interleaving - - * 0UL for non intlv - */ - u32 nr_pages; /* number of pages in csrow */ - u32 grain; /* granularity of reported error in bytes */ - int csrow_idx; /* the chip-select row */ - enum dev_type dtype; /* memory device type */ - u32 ue_count; /* Uncorrectable Errors for this csrow */ - u32 ce_count; /* Correctable Errors for this csrow */ - enum mem_type mtype; /* memory csrow type */ - enum edac_type edac_mode; /* EDAC mode for this csrow */ - struct mem_ctl_info *mci; /* the parent */ - - struct kobject kobj; /* sysfs kobject for this csrow */ - struct completion kobj_complete; - - /* FIXME the number of CHANNELs might need to become dynamic */ - u32 nr_channels; - struct channel_info *channels; -}; - -struct mem_ctl_info { - struct list_head link; /* for global list of mem_ctl_info structs */ - 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 - bandwith in bytes/sec. - */ - int (*get_sdram_scrub_rate) (struct mem_ctl_info *mci, u32 *bw); - - /* 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; - int nr_csrows; - struct csrow_info *csrows; - /* - * 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 *dev; - const char *mod_name; - const char *mod_ver; - const char *ctl_name; - char proc_name[MC_PROC_NAME_MAX_LEN + 1]; - void *pvt_info; - u32 ue_noinfo_count; /* Uncorrectable Errors w/o info */ - u32 ce_noinfo_count; /* Correctable Errors w/o info */ - u32 ue_count; /* Total Uncorrectable Errors for this MC */ - u32 ce_count; /* Total Correctable Errors for this MC */ - unsigned long start_time; /* mci load start time (in jiffies) */ - - /* this stuff is for safe removal of mc devices from global list while - * NMI handlers may be traversing list - */ - struct rcu_head rcu; - struct completion complete; - - /* edac sysfs device control */ - struct kobject edac_mci_kobj; - struct completion kobj_complete; -}; - -#ifdef CONFIG_PCI - -/* write all or some bits in a byte-register*/ -static inline void pci_write_bits8(struct pci_dev *pdev, int offset, u8 value, - u8 mask) -{ - if (mask != 0xff) { - u8 buf; - - pci_read_config_byte(pdev, offset, &buf); - value &= mask; - buf &= ~mask; - value |= buf; - } - - pci_write_config_byte(pdev, offset, value); -} - -/* write all or some bits in a word-register*/ -static inline void pci_write_bits16(struct pci_dev *pdev, int offset, - u16 value, u16 mask) -{ - if (mask != 0xffff) { - u16 buf; - - pci_read_config_word(pdev, offset, &buf); - value &= mask; - buf &= ~mask; - value |= buf; - } - - pci_write_config_word(pdev, offset, value); -} - -/* write all or some bits in a dword-register*/ -static inline void pci_write_bits32(struct pci_dev *pdev, int offset, - u32 value, u32 mask) -{ - if (mask != 0xffff) { - u32 buf; - - pci_read_config_dword(pdev, offset, &buf); - value &= mask; - buf &= ~mask; - value |= buf; - } - - pci_write_config_dword(pdev, offset, value); -} - -#endif /* CONFIG_PCI */ - -extern struct mem_ctl_info * edac_mc_find(int idx); -extern int edac_mc_add_mc(struct mem_ctl_info *mci,int mc_idx); -extern struct mem_ctl_info * edac_mc_del_mc(struct device *dev); -extern int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, - unsigned long page); - -/* - * The no info errors are used when error overflows are reported. - * There are a limited number of error logging registers that can - * be exausted. When all registers are exhausted and an additional - * error occurs then an error overflow register records that an - * error occured and the type of error, but doesn't have any - * further information. The ce/ue versions make for cleaner - * reporting logic and function interface - reduces conditional - * statement clutter and extra function arguments. - */ -extern void edac_mc_handle_ce(struct mem_ctl_info *mci, - unsigned long page_frame_number, unsigned long offset_in_page, - unsigned long syndrome, int row, int channel, - const char *msg); -extern void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, - const char *msg); -extern void edac_mc_handle_ue(struct mem_ctl_info *mci, - unsigned long page_frame_number, unsigned long offset_in_page, - int row, const char *msg); -extern void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, - const char *msg); -extern void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci, - unsigned int csrow, - unsigned int channel0, - unsigned int channel1, - char *msg); -extern void edac_mc_handle_fbd_ce(struct mem_ctl_info *mci, - unsigned int csrow, - unsigned int channel, - char *msg); - -/* - * This kmalloc's and initializes all the structures. - * Can't be used if all structures don't have the same lifetime. */ -extern struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows, - unsigned nr_chans); -/* Free an mc previously allocated by edac_mc_alloc() */ -extern void edac_mc_free(struct mem_ctl_info *mci); +#include "edac_core.h" -#endif /* _EDAC_MC_H_ */ |