From ee5340abab3babb91c1807cea47de4468b2dfc91 Mon Sep 17 00:00:00 2001 From: Qiuxu Zhuo Date: Fri, 24 Apr 2020 20:18:14 +0800 Subject: EDAC, {skx,i10nm}: Make some configurations CPU model specific The device ID for configuration agent PCI device and the offset for bus number configuration register can be CPU model specific. So add a new structure res_config to make them configurable and pass res_config to {skx,i10nm}_init() and skx_get_all_bus_mappings() for use. Signed-off-by: Qiuxu Zhuo Signed-off-by: Tony Luck Reviewed-by: Borislav Petkov Link: https://lore.kernel.org/r/20200427083246.GB11036@zn.tnic --- drivers/edac/skx_base.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'drivers/edac/skx_base.c') diff --git a/drivers/edac/skx_base.c b/drivers/edac/skx_base.c index 46a3a3440f5e..94c942fd06c1 100644 --- a/drivers/edac/skx_base.c +++ b/drivers/edac/skx_base.c @@ -157,8 +157,14 @@ fail: return -ENODEV; } +static struct res_config skx_cfg = { + .type = SKX, + .decs_did = 0x2016, + .busno_cfg_offset = 0xcc, +}; + static const struct x86_cpu_id skx_cpuids[] = { - X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE_X, NULL), + X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE_X, &skx_cfg), { } }; MODULE_DEVICE_TABLE(x86cpu, skx_cpuids); @@ -641,6 +647,7 @@ static inline void teardown_skx_debug(void) {} static int __init skx_init(void) { const struct x86_cpu_id *id; + struct res_config *cfg; const struct munit *m; const char *owner; int rc = 0, i, off[3] = {0xd0, 0xd4, 0xd8}; @@ -657,11 +664,13 @@ static int __init skx_init(void) if (!id) return -ENODEV; + cfg = (struct res_config *)id->driver_data; + rc = skx_get_hi_lo(0x2034, off, &skx_tolm, &skx_tohm); if (rc) return rc; - rc = skx_get_all_bus_mappings(0x2016, 0xcc, SKX, &skx_edac_list); + rc = skx_get_all_bus_mappings(cfg, &skx_edac_list); if (rc < 0) goto fail; if (rc == 0) { -- cgit v1.2.3 From 1032095053b34d474aa20f2625d97dd306e0991b Mon Sep 17 00:00:00 2001 From: Qiuxu Zhuo Date: Fri, 15 May 2020 20:34:06 +0800 Subject: EDAC/skx: Use the mcmtr register to retrieve close_pg/bank_xor_enable The skx_edac driver wrongly uses the mtr register to retrieve two fields close_pg and bank_xor_enable. Fix it by using the correct mcmtr register to get the two fields. Cc: Signed-off-by: Qiuxu Zhuo Reported-by: Matthew Riley Acked-by: Aristeu Rozanski Signed-off-by: Tony Luck Link: https://lore.kernel.org/r/20200515210146.1337-1-tony.luck@intel.com --- drivers/edac/i10nm_base.c | 2 +- drivers/edac/skx_base.c | 20 ++++++++------------ drivers/edac/skx_common.c | 6 +++--- drivers/edac/skx_common.h | 2 +- 4 files changed, 13 insertions(+), 17 deletions(-) (limited to 'drivers/edac/skx_base.c') diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c index df08de963d10..916d37f0503b 100644 --- a/drivers/edac/i10nm_base.c +++ b/drivers/edac/i10nm_base.c @@ -161,7 +161,7 @@ static int i10nm_get_dimm_config(struct mem_ctl_info *mci) mtr, mcddrtcfg, imc->mc, i, j); if (IS_DIMM_PRESENT(mtr)) - ndimms += skx_get_dimm_info(mtr, 0, dimm, + ndimms += skx_get_dimm_info(mtr, 0, 0, dimm, imc, i, j); else if (IS_NVDIMM_PRESENT(mcddrtcfg, j)) ndimms += skx_get_nvdimm_info(dimm, imc, i, j, diff --git a/drivers/edac/skx_base.c b/drivers/edac/skx_base.c index 46a3a3440f5e..a51954bc488c 100644 --- a/drivers/edac/skx_base.c +++ b/drivers/edac/skx_base.c @@ -163,27 +163,23 @@ static const struct x86_cpu_id skx_cpuids[] = { }; MODULE_DEVICE_TABLE(x86cpu, skx_cpuids); -#define SKX_GET_MTMTR(dev, reg) \ - pci_read_config_dword((dev), 0x87c, &(reg)) - -static bool skx_check_ecc(struct pci_dev *pdev) +static bool skx_check_ecc(u32 mcmtr) { - u32 mtmtr; - - SKX_GET_MTMTR(pdev, mtmtr); - - return !!GET_BITFIELD(mtmtr, 2, 2); + return !!GET_BITFIELD(mcmtr, 2, 2); } static int skx_get_dimm_config(struct mem_ctl_info *mci) { struct skx_pvt *pvt = mci->pvt_info; + u32 mtr, mcmtr, amap, mcddrtcfg; struct skx_imc *imc = pvt->imc; - u32 mtr, amap, mcddrtcfg; struct dimm_info *dimm; int i, j; int ndimms; + /* Only the mcmtr on the first channel is effective */ + pci_read_config_dword(imc->chan[0].cdev, 0x87c, &mcmtr); + for (i = 0; i < SKX_NUM_CHANNELS; i++) { ndimms = 0; pci_read_config_dword(imc->chan[i].cdev, 0x8C, &amap); @@ -193,14 +189,14 @@ static int skx_get_dimm_config(struct mem_ctl_info *mci) pci_read_config_dword(imc->chan[i].cdev, 0x80 + 4 * j, &mtr); if (IS_DIMM_PRESENT(mtr)) { - ndimms += skx_get_dimm_info(mtr, amap, dimm, imc, i, j); + ndimms += skx_get_dimm_info(mtr, mcmtr, amap, dimm, imc, i, j); } else if (IS_NVDIMM_PRESENT(mcddrtcfg, j)) { ndimms += skx_get_nvdimm_info(dimm, imc, i, j, EDAC_MOD_STR); nvdimm_count++; } } - if (ndimms && !skx_check_ecc(imc->chan[0].cdev)) { + if (ndimms && !skx_check_ecc(mcmtr)) { skx_printk(KERN_ERR, "ECC is disabled on imc %d\n", imc->mc); return -ENODEV; } diff --git a/drivers/edac/skx_common.c b/drivers/edac/skx_common.c index 99bbaf629b8d..412c651bef26 100644 --- a/drivers/edac/skx_common.c +++ b/drivers/edac/skx_common.c @@ -304,7 +304,7 @@ static int skx_get_dimm_attr(u32 reg, int lobit, int hibit, int add, #define numrow(reg) skx_get_dimm_attr(reg, 2, 4, 12, 1, 6, "rows") #define numcol(reg) skx_get_dimm_attr(reg, 0, 1, 10, 0, 2, "cols") -int skx_get_dimm_info(u32 mtr, u32 amap, struct dimm_info *dimm, +int skx_get_dimm_info(u32 mtr, u32 mcmtr, u32 amap, struct dimm_info *dimm, struct skx_imc *imc, int chan, int dimmno) { int banks = 16, ranks, rows, cols, npages; @@ -324,8 +324,8 @@ int skx_get_dimm_info(u32 mtr, u32 amap, struct dimm_info *dimm, imc->mc, chan, dimmno, size, npages, banks, 1 << ranks, rows, cols); - imc->chan[chan].dimms[dimmno].close_pg = GET_BITFIELD(mtr, 0, 0); - imc->chan[chan].dimms[dimmno].bank_xor_enable = GET_BITFIELD(mtr, 9, 9); + imc->chan[chan].dimms[dimmno].close_pg = GET_BITFIELD(mcmtr, 0, 0); + imc->chan[chan].dimms[dimmno].bank_xor_enable = GET_BITFIELD(mcmtr, 9, 9); imc->chan[chan].dimms[dimmno].fine_grain_bank = GET_BITFIELD(amap, 0, 0); imc->chan[chan].dimms[dimmno].rowbits = rows; imc->chan[chan].dimms[dimmno].colbits = cols; diff --git a/drivers/edac/skx_common.h b/drivers/edac/skx_common.h index 60d1ea669afd..319f9b2f1f89 100644 --- a/drivers/edac/skx_common.h +++ b/drivers/edac/skx_common.h @@ -128,7 +128,7 @@ int skx_get_all_bus_mappings(unsigned int did, int off, enum type, int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm); -int skx_get_dimm_info(u32 mtr, u32 amap, struct dimm_info *dimm, +int skx_get_dimm_info(u32 mtr, u32 mcmtr, u32 amap, struct dimm_info *dimm, struct skx_imc *imc, int chan, int dimmno); int skx_get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc, -- cgit v1.2.3