diff options
author | Jason Baron <jbaron@akamai.com> | 2016-05-06 11:18:47 -0400 |
---|---|---|
committer | Borislav Petkov <bp@suse.de> | 2016-05-06 18:50:14 +0200 |
commit | 953dee9bbd245f5515173126b9cc8b1a2c340797 (patch) | |
tree | d9a940e4152ea5cb7b6eb362fa8895170ee17cc6 /drivers/edac | |
parent | 2c1ea4c700af3dcfc8eabd94c91d1830b42c5461 (diff) | |
download | op-kernel-dev-953dee9bbd245f5515173126b9cc8b1a2c340797.zip op-kernel-dev-953dee9bbd245f5515173126b9cc8b1a2c340797.tar.gz |
EDAC, ie31200_edac: Add Skylake support
Skylake adjusts some register locations, but otherwise follows the
existing model quite closely. I was able to verify that the 'ce_count'
increments when 'bad dimms' are used. The accounting of 'ce_count' and
'ue_count' is the primary functionality of interest for us. Tested on
Intel(R) Xeon(R) CPU E3-1260L v5 @ 2.90GHz.
Signed-off-by: Jason Baron <jbaron@akamai.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1462547927-22679-1-git-send-email-jbaron@akamai.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'drivers/edac')
-rw-r--r-- | drivers/edac/ie31200_edac.c | 121 |
1 files changed, 90 insertions, 31 deletions
diff --git a/drivers/edac/ie31200_edac.c b/drivers/edac/ie31200_edac.c index 18d77ac..1c88d97 100644 --- a/drivers/edac/ie31200_edac.c +++ b/drivers/edac/ie31200_edac.c @@ -17,6 +17,7 @@ * 015c: Xeon E3-1200 v2/3rd Gen Core processor DRAM Controller * 0c04: Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller * 0c08: Xeon E3-1200 v3 Processor DRAM Controller + * 1918: Xeon E3-1200 v5 Skylake Host Bridge/DRAM Registers * * Based on Intel specification: * http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e3-1200v3-vol-2-datasheet.pdf @@ -55,6 +56,7 @@ #define PCI_DEVICE_ID_INTEL_IE31200_HB_5 0x015c #define PCI_DEVICE_ID_INTEL_IE31200_HB_6 0x0c04 #define PCI_DEVICE_ID_INTEL_IE31200_HB_7 0x0c08 +#define PCI_DEVICE_ID_INTEL_IE31200_HB_8 0x1918 #define IE31200_DIMMS 4 #define IE31200_RANKS 8 @@ -105,8 +107,11 @@ * 1 Multiple Bit Error Status (MERRSTS) * 0 Correctable Error Status (CERRSTS) */ + #define IE31200_C0ECCERRLOG 0x40c8 #define IE31200_C1ECCERRLOG 0x44c8 +#define IE31200_C0ECCERRLOG_SKL 0x4048 +#define IE31200_C1ECCERRLOG_SKL 0x4448 #define IE31200_ECCERRLOG_CE BIT(0) #define IE31200_ECCERRLOG_UE BIT(1) #define IE31200_ECCERRLOG_RANK_BITS GENMASK_ULL(28, 27) @@ -123,17 +128,28 @@ #define IE31200_CAPID0_DDPCD BIT(6) #define IE31200_CAPID0_ECC BIT(1) -#define IE31200_MAD_DIMM_0_OFFSET 0x5004 -#define IE31200_MAD_DIMM_SIZE GENMASK_ULL(7, 0) -#define IE31200_MAD_DIMM_A_RANK BIT(17) -#define IE31200_MAD_DIMM_A_WIDTH BIT(19) - -#define IE31200_PAGES(n) (n << (28 - PAGE_SHIFT)) +#define IE31200_MAD_DIMM_0_OFFSET 0x5004 +#define IE31200_MAD_DIMM_0_OFFSET_SKL 0x500C +#define IE31200_MAD_DIMM_SIZE GENMASK_ULL(7, 0) +#define IE31200_MAD_DIMM_A_RANK BIT(17) +#define IE31200_MAD_DIMM_A_RANK_SHIFT 17 +#define IE31200_MAD_DIMM_A_RANK_SKL BIT(10) +#define IE31200_MAD_DIMM_A_RANK_SKL_SHIFT 10 +#define IE31200_MAD_DIMM_A_WIDTH BIT(19) +#define IE31200_MAD_DIMM_A_WIDTH_SHIFT 19 +#define IE31200_MAD_DIMM_A_WIDTH_SKL GENMASK_ULL(9, 8) +#define IE31200_MAD_DIMM_A_WIDTH_SKL_SHIFT 8 + +/* Skylake reports 1GB increments, everything else is 256MB */ +#define IE31200_PAGES(n, skl) \ + (n << (28 + (2 * skl) - PAGE_SHIFT)) static int nr_channels; struct ie31200_priv { void __iomem *window; + void __iomem *c0errlog; + void __iomem *c1errlog; }; enum ie31200_chips { @@ -157,9 +173,9 @@ static const struct ie31200_dev_info ie31200_devs[] = { }; struct dimm_data { - u8 size; /* in 256MB multiples */ + u8 size; /* in multiples of 256MB, except Skylake is 1GB */ u8 dual_rank : 1, - x16_width : 1; /* 0 means x8 width */ + x16_width : 2; /* 0 means x8 width */ }; static int how_many_channels(struct pci_dev *pdev) @@ -197,11 +213,10 @@ static bool ecc_capable(struct pci_dev *pdev) return true; } -static int eccerrlog_row(int channel, u64 log) +static int eccerrlog_row(u64 log) { - int rank = ((log & IE31200_ECCERRLOG_RANK_BITS) >> - IE31200_ECCERRLOG_RANK_SHIFT); - return rank | (channel * IE31200_RANKS_PER_CHANNEL); + return ((log & IE31200_ECCERRLOG_RANK_BITS) >> + IE31200_ECCERRLOG_RANK_SHIFT); } static void ie31200_clear_error_info(struct mem_ctl_info *mci) @@ -219,7 +234,6 @@ static void ie31200_get_and_clear_error_info(struct mem_ctl_info *mci, { struct pci_dev *pdev; struct ie31200_priv *priv = mci->pvt_info; - void __iomem *window = priv->window; pdev = to_pci_dev(mci->pdev); @@ -232,9 +246,9 @@ static void ie31200_get_and_clear_error_info(struct mem_ctl_info *mci, if (!(info->errsts & IE31200_ERRSTS_BITS)) return; - info->eccerrlog[0] = lo_hi_readq(window + IE31200_C0ECCERRLOG); + info->eccerrlog[0] = lo_hi_readq(priv->c0errlog); if (nr_channels == 2) - info->eccerrlog[1] = lo_hi_readq(window + IE31200_C1ECCERRLOG); + info->eccerrlog[1] = lo_hi_readq(priv->c1errlog); pci_read_config_word(pdev, IE31200_ERRSTS, &info->errsts2); @@ -245,10 +259,10 @@ static void ie31200_get_and_clear_error_info(struct mem_ctl_info *mci, * should be UE info. */ if ((info->errsts ^ info->errsts2) & IE31200_ERRSTS_BITS) { - info->eccerrlog[0] = lo_hi_readq(window + IE31200_C0ECCERRLOG); + info->eccerrlog[0] = lo_hi_readq(priv->c0errlog); if (nr_channels == 2) info->eccerrlog[1] = - lo_hi_readq(window + IE31200_C1ECCERRLOG); + lo_hi_readq(priv->c1errlog); } ie31200_clear_error_info(mci); @@ -274,14 +288,14 @@ static void ie31200_process_error_info(struct mem_ctl_info *mci, if (log & IE31200_ECCERRLOG_UE) { edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0, - eccerrlog_row(channel, log), + eccerrlog_row(log), channel, -1, "ie31200 UE", ""); } else if (log & IE31200_ECCERRLOG_CE) { edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, IE31200_ECCERRLOG_SYNDROME(log), - eccerrlog_row(channel, log), + eccerrlog_row(log), channel, -1, "ie31200 CE", ""); } @@ -326,6 +340,33 @@ static void __iomem *ie31200_map_mchbar(struct pci_dev *pdev) return window; } +static void __skl_populate_dimm_info(struct dimm_data *dd, u32 addr_decode, + int chan) +{ + dd->size = (addr_decode >> (chan << 4)) & IE31200_MAD_DIMM_SIZE; + dd->dual_rank = (addr_decode & (IE31200_MAD_DIMM_A_RANK_SKL << (chan << 4))) ? 1 : 0; + dd->x16_width = ((addr_decode & (IE31200_MAD_DIMM_A_WIDTH_SKL << (chan << 4))) >> + (IE31200_MAD_DIMM_A_WIDTH_SKL_SHIFT + (chan << 4))); +} + +static void __populate_dimm_info(struct dimm_data *dd, u32 addr_decode, + int chan) +{ + dd->size = (addr_decode >> (chan << 3)) & IE31200_MAD_DIMM_SIZE; + dd->dual_rank = (addr_decode & (IE31200_MAD_DIMM_A_RANK << chan)) ? 1 : 0; + dd->x16_width = (addr_decode & (IE31200_MAD_DIMM_A_WIDTH << chan)) ? 1 : 0; +} + +static void populate_dimm_info(struct dimm_data *dd, u32 addr_decode, int chan, + bool skl) +{ + if (skl) + __skl_populate_dimm_info(dd, addr_decode, chan); + else + __populate_dimm_info(dd, addr_decode, chan); +} + + static int ie31200_probe1(struct pci_dev *pdev, int dev_idx) { int i, j, ret; @@ -334,7 +375,8 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx) struct dimm_data dimm_info[IE31200_CHANNELS][IE31200_DIMMS_PER_CHANNEL]; void __iomem *window; struct ie31200_priv *priv; - u32 addr_decode; + u32 addr_decode, mad_offset; + bool skl = (pdev->device == PCI_DEVICE_ID_INTEL_IE31200_HB_8); edac_dbg(0, "MC:\n"); @@ -363,7 +405,10 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx) edac_dbg(3, "MC: init mci\n"); mci->pdev = &pdev->dev; - mci->mtype_cap = MEM_FLAG_DDR3; + if (skl) + mci->mtype_cap = MEM_FLAG_DDR4; + else + mci->mtype_cap = MEM_FLAG_DDR3; mci->edac_ctl_cap = EDAC_FLAG_SECDED; mci->edac_cap = EDAC_FLAG_SECDED; mci->mod_name = EDAC_MOD_STR; @@ -374,19 +419,24 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx) mci->ctl_page_to_phys = NULL; priv = mci->pvt_info; priv->window = window; + if (skl) { + priv->c0errlog = window + IE31200_C0ECCERRLOG_SKL; + priv->c1errlog = window + IE31200_C1ECCERRLOG_SKL; + mad_offset = IE31200_MAD_DIMM_0_OFFSET_SKL; + } else { + priv->c0errlog = window + IE31200_C0ECCERRLOG; + priv->c1errlog = window + IE31200_C1ECCERRLOG; + mad_offset = IE31200_MAD_DIMM_0_OFFSET; + } /* populate DIMM info */ for (i = 0; i < IE31200_CHANNELS; i++) { - addr_decode = readl(window + IE31200_MAD_DIMM_0_OFFSET + + addr_decode = readl(window + mad_offset + (i * 4)); edac_dbg(0, "addr_decode: 0x%x\n", addr_decode); for (j = 0; j < IE31200_DIMMS_PER_CHANNEL; j++) { - dimm_info[i][j].size = (addr_decode >> (j * 8)) & - IE31200_MAD_DIMM_SIZE; - dimm_info[i][j].dual_rank = (addr_decode & - (IE31200_MAD_DIMM_A_RANK << j)) ? 1 : 0; - dimm_info[i][j].x16_width = (addr_decode & - (IE31200_MAD_DIMM_A_WIDTH << j)) ? 1 : 0; + populate_dimm_info(&dimm_info[i][j], addr_decode, j, + skl); edac_dbg(0, "size: 0x%x, rank: %d, width: %d\n", dimm_info[i][j].size, dimm_info[i][j].dual_rank, @@ -405,7 +455,7 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx) struct dimm_info *dimm; unsigned long nr_pages; - nr_pages = IE31200_PAGES(dimm_info[j][i].size); + nr_pages = IE31200_PAGES(dimm_info[j][i].size, skl); if (nr_pages == 0) continue; @@ -417,7 +467,10 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx) dimm->nr_pages = nr_pages; edac_dbg(0, "set nr pages: 0x%lx\n", nr_pages); dimm->grain = 8; /* just a guess */ - dimm->mtype = MEM_DDR3; + if (skl) + dimm->mtype = MEM_DDR4; + else + dimm->mtype = MEM_DDR3; dimm->dtype = DEV_UNKNOWN; dimm->edac_mode = EDAC_UNKNOWN; } @@ -426,7 +479,10 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx) dimm->nr_pages = nr_pages; edac_dbg(0, "set nr pages: 0x%lx\n", nr_pages); dimm->grain = 8; /* same guess */ - dimm->mtype = MEM_DDR3; + if (skl) + dimm->mtype = MEM_DDR4; + else + dimm->mtype = MEM_DDR3; dimm->dtype = DEV_UNKNOWN; dimm->edac_mode = EDAC_UNKNOWN; } @@ -501,6 +557,9 @@ static const struct pci_device_id ie31200_pci_tbl[] = { PCI_VEND_DEV(INTEL, IE31200_HB_7), PCI_ANY_ID, PCI_ANY_ID, 0, 0, IE31200}, { + PCI_VEND_DEV(INTEL, IE31200_HB_8), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + IE31200}, + { 0, } /* 0 terminated list. */ }; |