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authorYazen Ghannam <Yazen.Ghannam@amd.com>2016-11-28 17:50:21 +0300
committerBorislav Petkov <bp@suse.de>2016-11-29 19:16:09 +0300
commit07ed82ef93d6c70dcd1f31429a8fd12fbdeb21fd (patch)
treeece4b6d863af47bea856721ac091a645dcc06ea2 /drivers/edac/amd64_edac.c
parent8051c0af3c846937d5454766fe407b08a7681256 (diff)
downloadlinux-07ed82ef93d6c70dcd1f31429a8fd12fbdeb21fd.tar.xz
EDAC, amd64: Add Fam17h debug output
Read a few more UMC registers and provide debug output in order to be as similar as possible to older AMD systems. Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com> Cc: Aravind Gopalakrishnan <aravindksg.lkml@gmail.com> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: x86-ml <x86@kernel.org> Link: http://lkml.kernel.org/r/1480344621-14966-1-git-send-email-Yazen.Ghannam@amd.com [ Remove unneeded K8 check and comments, fixup others. ] Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'drivers/edac/amd64_edac.c')
-rw-r--r--drivers/edac/amd64_edac.c96
1 files changed, 88 insertions, 8 deletions
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 52ae415aa699..fdd963794cdb 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -762,8 +762,75 @@ static void debug_dump_dramcfg_low(struct amd64_pvt *pvt, u32 dclr, int chan)
(dclr & BIT(15)) ? "yes" : "no");
}
+static void debug_display_dimm_sizes_df(struct amd64_pvt *pvt, u8 ctrl)
+{
+ u32 *dcsb = ctrl ? pvt->csels[1].csbases : pvt->csels[0].csbases;
+ int dimm, size0, size1;
+
+ edac_printk(KERN_DEBUG, EDAC_MC, "UMC%d chip selects:\n", ctrl);
+
+ for (dimm = 0; dimm < 4; dimm++) {
+ size0 = 0;
+
+ if (dcsb[dimm*2] & DCSB_CS_ENABLE)
+ size0 = pvt->ops->dbam_to_cs(pvt, ctrl, 0, dimm);
+
+ size1 = 0;
+ if (dcsb[dimm*2 + 1] & DCSB_CS_ENABLE)
+ size1 = pvt->ops->dbam_to_cs(pvt, ctrl, 0, dimm);
+
+ amd64_info(EDAC_MC ": %d: %5dMB %d: %5dMB\n",
+ dimm * 2, size0,
+ dimm * 2 + 1, size1);
+ }
+}
+
+static void __dump_misc_regs_df(struct amd64_pvt *pvt)
+{
+ struct amd64_umc *umc;
+ u32 i, tmp, umc_base;
+
+ for (i = 0; i < NUM_UMCS; i++) {
+ umc_base = get_umc_base(i);
+ umc = &pvt->umc[i];
+
+ edac_dbg(1, "UMC%d DIMM cfg: 0x%x\n", i, umc->dimm_cfg);
+ edac_dbg(1, "UMC%d UMC cfg: 0x%x\n", i, umc->umc_cfg);
+ edac_dbg(1, "UMC%d SDP ctrl: 0x%x\n", i, umc->sdp_ctrl);
+ edac_dbg(1, "UMC%d ECC ctrl: 0x%x\n", i, umc->ecc_ctrl);
+
+ amd_smn_read(pvt->mc_node_id, umc_base + UMCCH_ECC_BAD_SYMBOL, &tmp);
+ edac_dbg(1, "UMC%d ECC bad symbol: 0x%x\n", i, tmp);
+
+ amd_smn_read(pvt->mc_node_id, umc_base + UMCCH_UMC_CAP, &tmp);
+ edac_dbg(1, "UMC%d UMC cap: 0x%x\n", i, tmp);
+ edac_dbg(1, "UMC%d UMC cap high: 0x%x\n", i, umc->umc_cap_hi);
+
+ edac_dbg(1, "UMC%d ECC capable: %s, ChipKill ECC capable: %s\n",
+ i, (umc->umc_cap_hi & BIT(30)) ? "yes" : "no",
+ (umc->umc_cap_hi & BIT(31)) ? "yes" : "no");
+ edac_dbg(1, "UMC%d All DIMMs support ECC: %s\n",
+ i, (umc->umc_cfg & BIT(12)) ? "yes" : "no");
+ edac_dbg(1, "UMC%d x4 DIMMs present: %s\n",
+ i, (umc->dimm_cfg & BIT(6)) ? "yes" : "no");
+ edac_dbg(1, "UMC%d x16 DIMMs present: %s\n",
+ i, (umc->dimm_cfg & BIT(7)) ? "yes" : "no");
+
+ if (pvt->dram_type == MEM_LRDDR4) {
+ amd_smn_read(pvt->mc_node_id, umc_base + UMCCH_ADDR_CFG, &tmp);
+ edac_dbg(1, "UMC%d LRDIMM %dx rank multiply\n",
+ i, 1 << ((tmp >> 4) & 0x3));
+ }
+
+ debug_display_dimm_sizes_df(pvt, i);
+ }
+
+ edac_dbg(1, "F0x104 (DRAM Hole Address): 0x%08x, base: 0x%08x\n",
+ pvt->dhar, dhar_base(pvt));
+}
+
/* Display and decode various NB registers for debug purposes. */
-static void dump_misc_regs(struct amd64_pvt *pvt)
+static void __dump_misc_regs(struct amd64_pvt *pvt)
{
edac_dbg(1, "F3xE8 (NB Cap): 0x%08x\n", pvt->nbcap);
@@ -783,8 +850,6 @@ static void dump_misc_regs(struct amd64_pvt *pvt)
(pvt->fam == 0xf) ? k8_dhar_offset(pvt)
: f10_dhar_offset(pvt));
- edac_dbg(1, " DramHoleValid: %s\n", dhar_valid(pvt) ? "yes" : "no");
-
debug_display_dimm_sizes(pvt, 0);
/* everything below this point is Fam10h and above */
@@ -793,13 +858,25 @@ static void dump_misc_regs(struct amd64_pvt *pvt)
debug_display_dimm_sizes(pvt, 1);
- amd64_info("using %s syndromes.\n", ((pvt->ecc_sym_sz == 8) ? "x8" : "x4"));
-
/* Only if NOT ganged does dclr1 have valid info */
if (!dct_ganging_enabled(pvt))
debug_dump_dramcfg_low(pvt, pvt->dclr1, 1);
}
+/* Display and decode various NB registers for debug purposes. */
+static void dump_misc_regs(struct amd64_pvt *pvt)
+{
+ if (pvt->umc)
+ __dump_misc_regs_df(pvt);
+ else
+ __dump_misc_regs(pvt);
+
+ edac_dbg(1, " DramHoleValid: %s\n", dhar_valid(pvt) ? "yes" : "no");
+
+ amd64_info("using %s syndromes.\n",
+ ((pvt->ecc_sym_sz == 8) ? "x8" : "x4"));
+}
+
/*
* See BKDG, F2x[1,0][5C:40], F2[1,0][6C:60]
*/
@@ -2001,8 +2078,9 @@ static void debug_display_dimm_sizes(struct amd64_pvt *pvt, u8 ctrl)
size0 = 0;
if (dcsb[dimm*2] & DCSB_CS_ENABLE)
- /* For f15m60h, need multiplier for LRDIMM cs_size
- * calculation. We pass 'dimm' value to the dbam_to_cs
+ /*
+ * For F15m60h, we need multiplier for LRDIMM cs_size
+ * calculation. We pass dimm value to the dbam_to_cs
* mapper so we can find the multiplier from the
* corresponding DCSM.
*/
@@ -2463,9 +2541,11 @@ static void __read_mc_regs_df(struct amd64_pvt *pvt)
umc_base = get_umc_base(i);
umc = &pvt->umc[i];
+ amd_smn_read(nid, umc_base + UMCCH_DIMM_CFG, &umc->dimm_cfg);
+ amd_smn_read(nid, umc_base + UMCCH_UMC_CFG, &umc->umc_cfg);
amd_smn_read(nid, umc_base + UMCCH_SDP_CTRL, &umc->sdp_ctrl);
amd_smn_read(nid, umc_base + UMCCH_ECC_CTRL, &umc->ecc_ctrl);
- amd_smn_read(nid, umc_base + UMCCH_DIMM_CFG, &umc->dimm_cfg);
+ amd_smn_read(nid, umc_base + UMCCH_UMC_CAP_HI, &umc->umc_cap_hi);
}
}