--- /dev/null
+/*
+ * AMD64 class Memory Controller kernel module
+ *
+ * Copyright (c) 2009 SoftwareBitMaker.
+ * Copyright (c) 2009 Advanced Micro Devices, Inc.
+ *
+ * This file may be distributed under the terms of the
+ * GNU General Public License.
+ *
+ * Originally Written by Thayne Harbaugh
+ *
+ * Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
+ * - K8 CPU Revision D and greater support
+ *
+ * Changes by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>:
+ * - Module largely rewritten, with new (and hopefully correct)
+ * code for dealing with node and chip select interleaving,
+ * various code cleanup, and bug fixes
+ * - Added support for memory hoisting using DRAM hole address
+ * register
+ *
+ * Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
+ * -K8 Rev (1207) revision support added, required Revision
+ * specific mini-driver code to support Rev F as well as
+ * prior revisions
+ *
+ * Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
+ * -Family 10h revision support added. New PCI Device IDs,
+ * indicating new changes. Actual registers modified
+ * were slight, less than the Rev E to Rev F transition
+ * but changing the PCI Device ID was the proper thing to
+ * do, as it provides for almost automactic family
+ * detection. The mods to Rev F required more family
+ * information detection.
+ *
+ * Changes/Fixes by Borislav Petkov <borislav.petkov@amd.com>:
+ * - misc fixes and code cleanups
+ *
+ * This module is based on the following documents
+ * (available from http://www.amd.com/):
+ *
+ * Title: BIOS and Kernel Developer's Guide for AMD Athlon 64 and AMD
+ * Opteron Processors
+ * AMD publication #: 26094
+ *` Revision: 3.26
+ *
+ * Title: BIOS and Kernel Developer's Guide for AMD NPT Family 0Fh
+ * Processors
+ * AMD publication #: 32559
+ * Revision: 3.00
+ * Issue Date: May 2006
+ *
+ * Title: BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h
+ * Processors
+ * AMD publication #: 31116
+ * Revision: 3.00
+ * Issue Date: September 07, 2007
+ *
+ * Sections in the first 2 documents are no longer in sync with each other.
+ * The Family 10h BKDG was totally re-written from scratch with a new
+ * presentation model.
+ * Therefore, comments that refer to a Document section might be off.
+ */
+
+#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 "edac_core.h"
+
+#define amd64_printk(level, fmt, arg...) \
+ edac_printk(level, "amd64", fmt, ##arg)
+
+#define amd64_mc_printk(mci, level, fmt, arg...) \
+ edac_mc_chipset_printk(mci, level, "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 " Ver: 3.2.0 " __DATE__
+#define EDAC_MOD_STR "amd64_edac"
+
+/* Extended Model from CPUID, for CPU Revision numbers */
+#define OPTERON_CPU_LE_REV_C 0
+#define OPTERON_CPU_REV_D 1
+#define OPTERON_CPU_REV_E 2
+
+/* NPT processors have the following Extended Models */
+#define OPTERON_CPU_REV_F 4
+#define OPTERON_CPU_REV_FA 5
+
+/* Hardware limit on ChipSelect rows per MC and processors per system */
+#define CHIPSELECT_COUNT 8
+#define DRAM_REG_COUNT 8
+
+
+/*
+ * PCI-defined configuration space registers
+ */
+
+
+/*
+ * Function 1 - Address Map
+ */
+#define K8_DRAM_BASE_LOW 0x40
+#define K8_DRAM_LIMIT_LOW 0x44
+#define K8_DHAR 0xf0
+
+#define DHAR_VALID BIT(0)
+#define F10_DRAM_MEM_HOIST_VALID BIT(1)
+
+#define DHAR_BASE_MASK 0xff000000
+#define dhar_base(dhar) (dhar & DHAR_BASE_MASK)
+
+#define K8_DHAR_OFFSET_MASK 0x0000ff00
+#define k8_dhar_offset(dhar) ((dhar & K8_DHAR_OFFSET_MASK) << 16)
+
+#define F10_DHAR_OFFSET_MASK 0x0000ff80
+ /* NOTE: Extra mask bit vs K8 */
+#define f10_dhar_offset(dhar) ((dhar & F10_DHAR_OFFSET_MASK) << 16)
+
+
+/* F10 High BASE/LIMIT registers */
+#define F10_DRAM_BASE_HIGH 0x140
+#define F10_DRAM_LIMIT_HIGH 0x144
+
+
+/*
+ * Function 2 - DRAM controller
+ */
+#define K8_DCSB0 0x40
+#define F10_DCSB1 0x140
+
+#define K8_DCSB_CS_ENABLE BIT(0)
+#define K8_DCSB_NPT_SPARE BIT(1)
+#define K8_DCSB_NPT_TESTFAIL BIT(2)
+
+/*
+ * REV E: select [31:21] and [15:9] from DCSB and the shift amount to form
+ * the address
+ */
+#define REV_E_DCSB_BASE_BITS (0xFFE0FE00ULL)
+#define REV_E_DCS_SHIFT 4
+#define REV_E_DCSM_COUNT 8
+
+#define REV_F_F1Xh_DCSB_BASE_BITS (0x1FF83FE0ULL)
+#define REV_F_F1Xh_DCS_SHIFT 8
+
+/*
+ * REV F and later: selects [28:19] and [13:5] from DCSB and the shift amount
+ * to form the address
+ */
+#define REV_F_DCSB_BASE_BITS (0x1FF83FE0ULL)
+#define REV_F_DCS_SHIFT 8
+#define REV_F_DCSM_COUNT 4
+#define F10_DCSM_COUNT 4
+#define F11_DCSM_COUNT 2
+
+/* DRAM CS Mask Registers */
+#define K8_DCSM0 0x60
+#define F10_DCSM1 0x160
+
+/* REV E: select [29:21] and [15:9] from DCSM */
+#define REV_E_DCSM_MASK_BITS 0x3FE0FE00
+
+/* unused bits [24:20] and [12:0] */
+#define REV_E_DCS_NOTUSED_BITS 0x01F01FFF
+
+/* REV F and later: select [28:19] and [13:5] from DCSM */
+#define REV_F_F1Xh_DCSM_MASK_BITS 0x1FF83FE0
+
+/* unused bits [26:22] and [12:0] */
+#define REV_F_F1Xh_DCS_NOTUSED_BITS 0x07C01FFF
+
+#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 F10_DCLR_0 0x90
+#define F10_DCLR_1 0x190
+#define REVE_WIDTH_128 BIT(16)
+#define F10_WIDTH_128 BIT(11)
+
+
+#define F10_DCHR_0 0x94
+#define F10_DCHR_1 0x194
+
+#define F10_DCHR_FOUR_RANK_DIMM BIT(18)
+#define F10_DCHR_Ddr3Mode BIT(8)
+#define F10_DCHR_MblMode BIT(6)
+
+
+#define F10_DCTL_SEL_LOW 0x110
+
+#define dct_sel_baseaddr(pvt) \
+ ((pvt->dram_ctl_select_low) & 0xFFFFF800)
+
+#define dct_sel_interleave_addr(pvt) \
+ (((pvt->dram_ctl_select_low) >> 6) & 0x3)
+
+enum {
+ F10_DCTL_SEL_LOW_DctSelHiRngEn = BIT(0),
+ F10_DCTL_SEL_LOW_DctSelIntLvEn = BIT(2),
+ F10_DCTL_SEL_LOW_DctGangEn = BIT(4),
+ F10_DCTL_SEL_LOW_DctDatIntLv = BIT(5),
+ F10_DCTL_SEL_LOW_DramEnable = BIT(8),
+ F10_DCTL_SEL_LOW_MemCleared = BIT(10),
+};
+
+#define dct_high_range_enabled(pvt) \
+ (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelHiRngEn)
+
+#define dct_interleave_enabled(pvt) \
+ (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelIntLvEn)
+
+#define dct_ganging_enabled(pvt) \
+ (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctGangEn)
+
+#define dct_data_intlv_enabled(pvt) \
+ (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctDatIntLv)
+
+#define dct_dram_enabled(pvt) \
+ (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DramEnable)
+
+#define dct_memory_cleared(pvt) \
+ (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_MemCleared)
+
+
+#define F10_DCTL_SEL_HIGH 0x114
+
+
+/*
+ * Function 3 - Misc Control
+ */
+#define K8_NBCTL 0x40
+
+/* Correctable ECC error reporting enable */
+#define K8_NBCTL_CECCEn BIT(0)
+
+/* UnCorrectable ECC error reporting enable */
+#define K8_NBCTL_UECCEn BIT(1)
+
+#define K8_NBCFG 0x44
+#define K8_NBCFG_CHIPKILL BIT(23)
+#define K8_NBCFG_ECC_ENABLE BIT(22)
+
+#define K8_NBSL 0x48
+
+
+#define EXTRACT_HIGH_SYNDROME(x) (((x) >> 24) & 0xff)
+#define EXTRACT_EXT_ERROR_CODE(x) (((x) >> 16) & 0x1f)
+
+/* Family F10h: Normalized Extended Error Codes */
+#define F10_NBSL_EXT_ERR_RES 0x0
+#define F10_NBSL_EXT_ERR_CRC 0x1
+#define F10_NBSL_EXT_ERR_SYNC 0x2
+#define F10_NBSL_EXT_ERR_MST 0x3
+#define F10_NBSL_EXT_ERR_TGT 0x4
+#define F10_NBSL_EXT_ERR_GART 0x5
+#define F10_NBSL_EXT_ERR_RMW 0x6
+#define F10_NBSL_EXT_ERR_WDT 0x7
+#define F10_NBSL_EXT_ERR_ECC 0x8
+#define F10_NBSL_EXT_ERR_DEV 0x9
+#define F10_NBSL_EXT_ERR_LINK_DATA 0xA
+
+/* Next two are overloaded values */
+#define F10_NBSL_EXT_ERR_LINK_PROTO 0xB
+#define F10_NBSL_EXT_ERR_L3_PROTO 0xB
+
+#define F10_NBSL_EXT_ERR_NB_ARRAY 0xC
+#define F10_NBSL_EXT_ERR_DRAM_PARITY 0xD
+#define F10_NBSL_EXT_ERR_LINK_RETRY 0xE
+
+/* Next two are overloaded values */
+#define F10_NBSL_EXT_ERR_GART_WALK 0xF
+#define F10_NBSL_EXT_ERR_DEV_WALK 0xF
+
+/* 0x10 to 0x1B: Reserved */
+#define F10_NBSL_EXT_ERR_L3_DATA 0x1C
+#define F10_NBSL_EXT_ERR_L3_TAG 0x1D
+#define F10_NBSL_EXT_ERR_L3_LRU 0x1E
+
+/* K8: Normalized Extended Error Codes */
+#define K8_NBSL_EXT_ERR_ECC 0x0
+#define K8_NBSL_EXT_ERR_CRC 0x1
+#define K8_NBSL_EXT_ERR_SYNC 0x2
+#define K8_NBSL_EXT_ERR_MST 0x3
+#define K8_NBSL_EXT_ERR_TGT 0x4
+#define K8_NBSL_EXT_ERR_GART 0x5
+#define K8_NBSL_EXT_ERR_RMW 0x6
+#define K8_NBSL_EXT_ERR_WDT 0x7
+#define K8_NBSL_EXT_ERR_CHIPKILL_ECC 0x8
+#define K8_NBSL_EXT_ERR_DRAM_PARITY 0xD
+
+#define EXTRACT_ERROR_CODE(x) ((x) & 0xffff)
+#define TEST_TLB_ERROR(x) (((x) & 0xFFF0) == 0x0010)
+#define TEST_MEM_ERROR(x) (((x) & 0xFF00) == 0x0100)
+#define TEST_BUS_ERROR(x) (((x) & 0xF800) == 0x0800)
+#define EXTRACT_TT_CODE(x) (((x) >> 2) & 0x3)
+#define EXTRACT_II_CODE(x) (((x) >> 2) & 0x3)
+#define EXTRACT_LL_CODE(x) (((x) >> 0) & 0x3)
+#define EXTRACT_RRRR_CODE(x) (((x) >> 4) & 0xf)
+#define EXTRACT_TO_CODE(x) (((x) >> 8) & 0x1)
+#define EXTRACT_PP_CODE(x) (((x) >> 9) & 0x3)
+
+/*
+ * The following are for BUS type errors AFTER values have been normalized by
+ * shifting right
+ */
+#define K8_NBSL_PP_SRC 0x0
+#define K8_NBSL_PP_RES 0x1
+#define K8_NBSL_PP_OBS 0x2
+#define K8_NBSL_PP_GENERIC 0x3
+
+
+#define K8_NBSH 0x4C
+
+#define K8_NBSH_VALID_BIT BIT(31)
+#define K8_NBSH_OVERFLOW BIT(30)
+#define K8_NBSH_UNCORRECTED_ERR BIT(29)
+#define K8_NBSH_ERR_ENABLE BIT(28)
+#define K8_NBSH_MISC_ERR_VALID BIT(27)
+#define K8_NBSH_VALID_ERROR_ADDR BIT(26)
+#define K8_NBSH_PCC BIT(25)
+#define K8_NBSH_CECC BIT(14)
+#define K8_NBSH_UECC BIT(13)
+#define K8_NBSH_ERR_SCRUBER BIT(8)
+#define K8_NBSH_CORE3 BIT(3)
+#define K8_NBSH_CORE2 BIT(2)
+#define K8_NBSH_CORE1 BIT(1)
+#define K8_NBSH_CORE0 BIT(0)
+
+#define EXTRACT_LDT_LINK(x) (((x) >> 4) & 0x7)
+#define EXTRACT_ERR_CPU_MAP(x) ((x) & 0xF)
+#define EXTRACT_LOW_SYNDROME(x) (((x) >> 15) & 0xff)
+
+
+#define K8_NBEAL 0x50
+#define K8_NBEAH 0x54
+#define K8_SCRCTRL 0x58
+
+#define F10_NB_CFG_LOW 0x88
+#define F10_NB_CFG_LOW_ENABLE_EXT_CFG BIT(14)
+
+#define F10_NB_CFG_HIGH 0x8C
+
+#define F10_ONLINE_SPARE 0xB0
+#define F10_ONLINE_SPARE_SWAPDONE0(x) ((x) & BIT(1))
+#define F10_ONLINE_SPARE_SWAPDONE1(x) ((x) & BIT(3))
+#define F10_ONLINE_SPARE_BADDRAM_CS0(x) (((x) >> 4) & 0x00000007)
+#define F10_ONLINE_SPARE_BADDRAM_CS1(x) (((x) >> 8) & 0x00000007)
+
+#define F10_NB_ARRAY_ADDR 0xB8
+
+#define F10_NB_ARRAY_DRAM_ECC 0x80000000
+
+/* Bits [2:1] are used to select 16-byte section within a 64-byte cacheline */
+#define SET_NB_ARRAY_ADDRESS(section) (((section) & 0x3) << 1)
+
+#define F10_NB_ARRAY_DATA 0xBC
+
+#define SET_NB_DRAM_INJECTION_WRITE(word, bits) \
+ (BIT(((word) & 0xF) + 20) | \
+ BIT(17) | \
+ ((bits) & 0xF))
+
+#define SET_NB_DRAM_INJECTION_READ(word, bits) \
+ (BIT(((word) & 0xF) + 20) | \
+ BIT(16) | \
+ ((bits) & 0xF))
+
+#define K8_NBCAP 0xE8
+#define K8_NBCAP_CORES (BIT(12)|BIT(13))
+#define K8_NBCAP_CHIPKILL BIT(4)
+#define K8_NBCAP_SECDED BIT(3)
+#define K8_NBCAP_8_NODE BIT(2)
+#define K8_NBCAP_DUAL_NODE BIT(1)
+#define K8_NBCAP_DCT_DUAL BIT(0)
+
+/*
+ * MSR Regs
+ */
+#define K8_MSR_MCGCTL 0x017b
+#define K8_MSR_MCGCTL_NBE BIT(4)
+
+#define K8_MSR_MC4CTL 0x0410
+#define K8_MSR_MC4STAT 0x0411
+#define K8_MSR_MC4ADDR 0x0412
+
+/* AMD sets the first MC device at device ID 0x18. */
+static inline int get_mc_node_id_from_pdev(struct pci_dev *pdev)
+{
+ return PCI_SLOT(pdev->devfn) - 0x18;
+}
+
+enum amd64_chipset_families {
+ K8_CPUS = 0,
+ F10_CPUS,
+ F11_CPUS,
+};
+
+/*
+ * Structure to hold:
+ *
+ * 1) dynamically read status and error address HW registers
+ * 2) sysfs entered values
+ * 3) MCE values
+ *
+ * Depends on entry into the modules
+ */
+struct amd64_error_info_regs {
+ u32 nbcfg;
+ u32 nbsh;
+ u32 nbsl;
+ u32 nbeah;
+ u32 nbeal;
+};
+
+/* Error injection control structure */
+struct error_injection {
+ u32 section;
+ u32 word;
+ u32 bit_map;
+};
+
+struct amd64_pvt {
+ /* pci_device handles which we utilize */
+ struct pci_dev *addr_f1_ctl;
+ struct pci_dev *dram_f2_ctl;
+ struct pci_dev *misc_f3_ctl;
+
+ int mc_node_id; /* MC index of this MC node */
+ int ext_model; /* extended model value of this node */
+
+ struct low_ops *ops; /* pointer to per PCI Device ID func table */
+
+ 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 */
+
+ /* DRAM CS Base Address Registers F2x[1,0][5C:40] */
+ u32 dcsb0[CHIPSELECT_COUNT];
+ u32 dcsb1[CHIPSELECT_COUNT];
+
+ /* DRAM CS Mask Registers F2x[1,0][6C:60] */
+ u32 dcsm0[CHIPSELECT_COUNT];
+ u32 dcsm1[CHIPSELECT_COUNT];
+
+ /*
+ * Decoded parts of DRAM BASE and LIMIT Registers
+ * F1x[78,70,68,60,58,50,48,40]
+ */
+ u64 dram_base[DRAM_REG_COUNT];
+ u64 dram_limit[DRAM_REG_COUNT];
+ u8 dram_IntlvSel[DRAM_REG_COUNT];
+ u8 dram_IntlvEn[DRAM_REG_COUNT];
+ u8 dram_DstNode[DRAM_REG_COUNT];
+ u8 dram_rw_en[DRAM_REG_COUNT];
+
+ /*
+ * The following fields are set at (load) run time, after CPU revision
+ * has been determined, since the dct_base and dct_mask registers vary
+ * based on revision
+ */
+ u32 dcsb_base; /* DCSB base bits */
+ u32 dcsm_mask; /* DCSM mask bits */
+ u32 num_dcsm; /* Number of DCSM registers */
+ u32 dcs_mask_notused; /* DCSM notused mask bits */
+ u32 dcs_shift; /* DCSB and DCSM shift value */
+
+ u64 top_mem; /* top of memory below 4GB */
+ u64 top_mem2; /* top of memory above 4GB */
+
+ u32 dram_ctl_select_low; /* DRAM Controller Select Low Reg */
+ u32 dram_ctl_select_high; /* DRAM Controller Select High Reg */
+ u32 online_spare; /* On-Line spare Reg */
+
+ /* temp storage for when input is received from sysfs */
+ struct amd64_error_info_regs ctl_error_info;
+
+ /* place to store error injection parameters prior to issue */
+ struct error_injection injection;
+
+ /* Save old hw registers' values before we modified them */
+ u32 nbctl_mcgctl_saved; /* When true, following 2 are valid */
+ u32 old_nbctl;
+ u32 *old_mcgctl; /* per core on this node */
+
+ /* MC Type Index value: socket F vs Family 10h */
+ u32 mc_type_index;
+
+ /* misc settings */
+ struct flags {
+ unsigned long cf8_extcfg:1;
+ } flags;
+};
+
+struct scrubrate {
+ u32 scrubval; /* bit pattern for scrub rate */
+ u32 bandwidth; /* bandwidth consumed (bytes/sec) */
+};
+
+extern struct scrubrate scrubrates[23];
+extern u32 revf_quad_ddr2_shift[16];
+extern const char *tt_msgs[4];
+extern const char *ll_msgs[4];
+extern const char *rrrr_msgs[16];
+extern const char *to_msgs[2];
+extern const char *pp_msgs[4];
+extern const char *ii_msgs[4];
+extern const char *ext_msgs[32];
+extern const char *htlink_msgs[8];
+
+/*
+ * 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 (*probe_valid_hardware)(struct amd64_pvt *pvt);
+ int (*early_channel_count)(struct amd64_pvt *pvt);
+
+ u64 (*get_error_address)(struct mem_ctl_info *mci,
+ struct amd64_error_info_regs *info);
+ void (*read_dram_base_limit)(struct amd64_pvt *pvt, int dram);
+ void (*read_dram_ctl_register)(struct amd64_pvt *pvt);
+ void (*map_sysaddr_to_csrow)(struct mem_ctl_info *mci,
+ struct amd64_error_info_regs *info,
+ u64 SystemAddr);
+ int (*dbam_map_to_pages)(struct amd64_pvt *pvt, int dram_map);
+};
+
+struct amd64_family_type {
+ const char *ctl_name;
+ u16 addr_f1_ctl;
+ u16 misc_f3_ctl;
+ struct low_ops ops;
+};
+
+static struct amd64_family_type amd64_family_types[];
+
+static inline const char *get_amd_family_name(int index)
+{
+ return amd64_family_types[index].ctl_name;
+}
+
+static inline struct low_ops *family_ops(int index)
+{
+ return &amd64_family_types[index].ops;
+}
+
+/*
+ * For future CPU versions, verify the following as new 'slow' rates appear and
+ * modify the necessary skip values for the supported CPU.
+ */
+#define K8_MIN_SCRUB_RATE_BITS 0x0
+#define F10_MIN_SCRUB_RATE_BITS 0x5
+#define F11_MIN_SCRUB_RATE_BITS 0x6
+
+int amd64_process_error_info(struct mem_ctl_info *mci,
+ struct amd64_error_info_regs *info,
+ int handle_errors);
+int amd64_get_dram_hole_info(struct mem_ctl_info *mci, u64 *hole_base,
+ u64 *hole_offset, u64 *hole_size);
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff