/* * Intel e752x Memory Controller kernel module * (C) 2004 Linux Networx (http://lnxi.com) * This file may be distributed under the terms of the * GNU General Public License. * * Implement support for the e7520, E7525, e7320 and i3100 memory controllers. * * Datasheets: * https://www.intel.in/content/www/in/en/chipsets/e7525-memory-controller-hub-datasheet.html * ftp://download.intel.com/design/intarch/datashts/31345803.pdf * * Written by Tom Zimmerman * * Contributors: * Thayne Harbaugh at realmsys.com (?) * Wang Zhenyu at intel.com * Dave Jiang at mvista.com * */ #include <linux/module.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/pci_ids.h> #include <linux/edac.h> #include "edac_module.h" #define EDAC_MOD_STR … static int report_non_memory_errors; static int force_function_unhide; static int sysbus_parity = …; static struct edac_pci_ctl_info *e752x_pci; #define e752x_printk(level, fmt, arg...) … #define e752x_mc_printk(mci, level, fmt, arg...) … #ifndef PCI_DEVICE_ID_INTEL_7520_0 #define PCI_DEVICE_ID_INTEL_7520_0 … #endif /* PCI_DEVICE_ID_INTEL_7520_0 */ #ifndef PCI_DEVICE_ID_INTEL_7520_1_ERR #define PCI_DEVICE_ID_INTEL_7520_1_ERR … #endif /* PCI_DEVICE_ID_INTEL_7520_1_ERR */ #ifndef PCI_DEVICE_ID_INTEL_7525_0 #define PCI_DEVICE_ID_INTEL_7525_0 … #endif /* PCI_DEVICE_ID_INTEL_7525_0 */ #ifndef PCI_DEVICE_ID_INTEL_7525_1_ERR #define PCI_DEVICE_ID_INTEL_7525_1_ERR … #endif /* PCI_DEVICE_ID_INTEL_7525_1_ERR */ #ifndef PCI_DEVICE_ID_INTEL_7320_0 #define PCI_DEVICE_ID_INTEL_7320_0 … #endif /* PCI_DEVICE_ID_INTEL_7320_0 */ #ifndef PCI_DEVICE_ID_INTEL_7320_1_ERR #define PCI_DEVICE_ID_INTEL_7320_1_ERR … #endif /* PCI_DEVICE_ID_INTEL_7320_1_ERR */ #ifndef PCI_DEVICE_ID_INTEL_3100_0 #define PCI_DEVICE_ID_INTEL_3100_0 … #endif /* PCI_DEVICE_ID_INTEL_3100_0 */ #ifndef PCI_DEVICE_ID_INTEL_3100_1_ERR #define PCI_DEVICE_ID_INTEL_3100_1_ERR … #endif /* PCI_DEVICE_ID_INTEL_3100_1_ERR */ #define E752X_NR_CSROWS … /* E752X register addresses - device 0 function 0 */ #define E752X_MCHSCRB … /* * 6:5 Scrub Completion Count * 3:2 Scrub Rate (i3100 only) * 01=fast 10=normal * 1:0 Scrub Mode enable * 00=off 10=on */ #define E752X_DRB … #define E752X_DRA … /* * 31:30 Device width row 7 * 01=x8 10=x4 11=x8 DDR2 * 27:26 Device width row 6 * 23:22 Device width row 5 * 19:20 Device width row 4 * 15:14 Device width row 3 * 11:10 Device width row 2 * 7:6 Device width row 1 * 3:2 Device width row 0 */ #define E752X_DRC … /* FIXME:IS THIS RIGHT? */ /* * 22 Number channels 0=1,1=2 * 19:18 DRB Granularity 32/64MB */ #define E752X_DRM … #define E752X_DDRCSR … /* * 14:12 1 single A, 2 single B, 3 dual */ #define E752X_TOLM … #define E752X_REMAPBASE … #define E752X_REMAPLIMIT … #define E752X_REMAPOFFSET … /* E752X register addresses - device 0 function 1 */ #define E752X_FERR_GLOBAL … #define E752X_NERR_GLOBAL … #define E752X_HI_FERR … #define E752X_HI_NERR … #define E752X_HI_ERRMASK … #define E752X_HI_SMICMD … #define E752X_SYSBUS_FERR … #define E752X_SYSBUS_NERR … #define E752X_SYSBUS_ERRMASK … #define E752X_SYSBUS_SMICMD … #define E752X_BUF_FERR … #define E752X_BUF_NERR … #define E752X_BUF_ERRMASK … #define E752X_BUF_SMICMD … #define E752X_DRAM_FERR … #define E752X_DRAM_NERR … #define E752X_DRAM_ERRMASK … #define E752X_DRAM_SMICMD … #define E752X_DRAM_RETR_ADD … #define E752X_DRAM_SEC1_ADD … /* error address register (32b) */ /* * 31 Reserved * 30:2 CE address (64 byte block 34:6 * 1 Reserved * 0 HiLoCS */ #define E752X_DRAM_SEC2_ADD … /* error address register (32b) */ /* * 31 Reserved * 30:2 CE address (64 byte block 34:6) * 1 Reserved * 0 HiLoCS */ #define E752X_DRAM_DED_ADD … /* error address register (32b) */ /* * 31 Reserved * 30:2 CE address (64 byte block 34:6) * 1 Reserved * 0 HiLoCS */ #define E752X_DRAM_SCRB_ADD … /* error address register (32b) */ /* * 31 Reserved * 30:2 CE address (64 byte block 34:6 * 1 Reserved * 0 HiLoCS */ #define E752X_DRAM_SEC1_SYNDROME … /* error syndrome register (16b) */ #define E752X_DRAM_SEC2_SYNDROME … /* error syndrome register (16b) */ #define E752X_DEVPRES1 … /* 3100 IMCH specific register addresses - device 0 function 1 */ #define I3100_NSI_FERR … #define I3100_NSI_NERR … #define I3100_NSI_SMICMD … #define I3100_NSI_EMASK … /* ICH5R register addresses - device 30 function 0 */ #define ICH5R_PCI_STAT … #define ICH5R_PCI_2ND_STAT … #define ICH5R_PCI_BRIDGE_CTL … enum e752x_chips { … }; /* * Those chips Support single-rank and dual-rank memories only. * * On e752x chips, the odd rows are present only on dual-rank memories. * Dividing the rank by two will provide the dimm# * * i3100 MC has a different mapping: it supports only 4 ranks. * * The mapping is (from 1 to n): * slot single-ranked double-ranked * dimm #1 -> rank #4 NA * dimm #2 -> rank #3 NA * dimm #3 -> rank #2 Ranks 2 and 3 * dimm #4 -> rank $1 Ranks 1 and 4 * * FIXME: The current mapping for i3100 considers that it supports up to 8 * ranks/chanel, but datasheet says that the MC supports only 4 ranks. */ struct e752x_pvt { … }; struct e752x_dev_info { … }; struct e752x_error_info { … }; static const struct e752x_dev_info e752x_devs[] = …; /* Valid scrub rates for the e752x/3100 hardware memory scrubber. We * map the scrubbing bandwidth to a hardware register value. The 'set' * operation finds the 'matching or higher value'. Note that scrubbing * on the e752x can only be enabled/disabled. The 3100 supports * a normal and fast mode. */ #define SDRATE_EOT … struct scrubrate { … }; /* Rate below assumes same performance as i3100 using PC3200 DDR2 in * normal mode. e752x bridges don't support choosing normal or fast mode, * so the scrubbing bandwidth value isn't all that important - scrubbing is * either on or off. */ static const struct scrubrate scrubrates_e752x[] = …; /* Fast mode: 2 GByte PC3200 DDR2 scrubbed in 33s = 63161283 bytes/s * Normal mode: 125 (32000 / 256) times slower than fast mode. */ static const struct scrubrate scrubrates_i3100[] = …; static unsigned long ctl_page_to_phys(struct mem_ctl_info *mci, unsigned long page) { … } static void do_process_ce(struct mem_ctl_info *mci, u16 error_one, u32 sec1_add, u16 sec1_syndrome) { … } static inline void process_ce(struct mem_ctl_info *mci, u16 error_one, u32 sec1_add, u16 sec1_syndrome, int *error_found, int handle_error) { … } static void do_process_ue(struct mem_ctl_info *mci, u16 error_one, u32 ded_add, u32 scrb_add) { … } static inline void process_ue(struct mem_ctl_info *mci, u16 error_one, u32 ded_add, u32 scrb_add, int *error_found, int handle_error) { … } static inline void process_ue_no_info_wr(struct mem_ctl_info *mci, int *error_found, int handle_error) { … } static void do_process_ded_retry(struct mem_ctl_info *mci, u16 error, u32 retry_add) { … } static inline void process_ded_retry(struct mem_ctl_info *mci, u16 error, u32 retry_add, int *error_found, int handle_error) { … } static inline void process_threshold_ce(struct mem_ctl_info *mci, u16 error, int *error_found, int handle_error) { … } static char *global_message[11] = …; #define DRAM_ENTRY … static char *fatal_message[2] = …; static void do_global_error(int fatal, u32 errors) { … } static inline void global_error(int fatal, u32 errors, int *error_found, int handle_error) { … } static char *hub_message[7] = …; static void do_hub_error(int fatal, u8 errors) { … } static inline void hub_error(int fatal, u8 errors, int *error_found, int handle_error) { … } #define NSI_FATAL_MASK … #define NSI_NON_FATAL_MASK … #define NSI_ERR_MASK … static char *nsi_message[30] = …; static void do_nsi_error(int fatal, u32 errors) { … } static inline void nsi_error(int fatal, u32 errors, int *error_found, int handle_error) { … } static char *membuf_message[4] = …; static void do_membuf_error(u8 errors) { … } static inline void membuf_error(u8 errors, int *error_found, int handle_error) { … } static char *sysbus_message[10] = …; static void do_sysbus_error(int fatal, u32 errors) { … } static inline void sysbus_error(int fatal, u32 errors, int *error_found, int handle_error) { … } static void e752x_check_hub_interface(struct e752x_error_info *info, int *error_found, int handle_error) { … } static void e752x_check_ns_interface(struct e752x_error_info *info, int *error_found, int handle_error) { … } static void e752x_check_sysbus(struct e752x_error_info *info, int *error_found, int handle_error) { … } static void e752x_check_membuf(struct e752x_error_info *info, int *error_found, int handle_error) { … } static void e752x_check_dram(struct mem_ctl_info *mci, struct e752x_error_info *info, int *error_found, int handle_error) { … } static void e752x_get_error_info(struct mem_ctl_info *mci, struct e752x_error_info *info) { … } static int e752x_process_error_info(struct mem_ctl_info *mci, struct e752x_error_info *info, int handle_errors) { … } static void e752x_check(struct mem_ctl_info *mci) { … } /* Program byte/sec bandwidth scrub rate to hardware */ static int set_sdram_scrub_rate(struct mem_ctl_info *mci, u32 new_bw) { … } /* Convert current scrub rate value into byte/sec bandwidth */ static int get_sdram_scrub_rate(struct mem_ctl_info *mci) { … } /* Return 1 if dual channel mode is active. Else return 0. */ static inline int dual_channel_active(u16 ddrcsr) { … } /* Remap csrow index numbers if map_type is "reverse" */ static inline int remap_csrow_index(struct mem_ctl_info *mci, int index) { … } static void e752x_init_csrows(struct mem_ctl_info *mci, struct pci_dev *pdev, u16 ddrcsr) { … } static void e752x_init_mem_map_table(struct pci_dev *pdev, struct e752x_pvt *pvt) { … } /* Return 0 on success or 1 on failure. */ static int e752x_get_devs(struct pci_dev *pdev, int dev_idx, struct e752x_pvt *pvt) { … } /* Setup system bus parity mask register. * Sysbus parity supported on: * e7320/e7520/e7525 + Xeon */ static void e752x_init_sysbus_parity_mask(struct e752x_pvt *pvt) { … } static void e752x_init_error_reporting_regs(struct e752x_pvt *pvt) { … } static int e752x_probe1(struct pci_dev *pdev, int dev_idx) { … } /* returns count (>= 0), or negative on error */ static int e752x_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { … } static void e752x_remove_one(struct pci_dev *pdev) { … } static const struct pci_device_id e752x_pci_tbl[] = …; MODULE_DEVICE_TABLE(pci, e752x_pci_tbl); static struct pci_driver e752x_driver = …; static int __init e752x_init(void) { … } static void __exit e752x_exit(void) { … } module_init(…) …; module_exit(e752x_exit); MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; module_param(force_function_unhide, int, 0444); MODULE_PARM_DESC(…) …; module_param(edac_op_state, int, 0444); MODULE_PARM_DESC(…) …; module_param(sysbus_parity, int, 0444); MODULE_PARM_DESC(…) …; module_param(report_non_memory_errors, int, 0644); MODULE_PARM_DESC(…) …;
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