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path: root/drivers/edac/amd64_edac.c
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Diffstat (limited to 'drivers/edac/amd64_edac.c')
-rw-r--r--drivers/edac/amd64_edac.c111
1 files changed, 89 insertions, 22 deletions
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index fba609ada0e6..2f854feeeb23 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -15,6 +15,21 @@ static struct msr __percpu *msrs;
static struct amd64_family_type *fam_type;
+static inline u32 get_umc_reg(u32 reg)
+{
+ if (!fam_type->flags.zn_regs_v2)
+ return reg;
+
+ switch (reg) {
+ case UMCCH_ADDR_CFG: return UMCCH_ADDR_CFG_DDR5;
+ case UMCCH_ADDR_MASK_SEC: return UMCCH_ADDR_MASK_SEC_DDR5;
+ case UMCCH_DIMM_CFG: return UMCCH_DIMM_CFG_DDR5;
+ }
+
+ WARN_ONCE(1, "%s: unknown register 0x%x", __func__, reg);
+ return 0;
+}
+
/* Per-node stuff */
static struct ecc_settings **ecc_stngs;
@@ -1429,8 +1444,10 @@ static void __dump_misc_regs_df(struct amd64_pvt *pvt)
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);
+ if (umc->dram_type == MEM_LRDDR4 || umc->dram_type == MEM_LRDDR5) {
+ amd_smn_read(pvt->mc_node_id,
+ umc_base + get_umc_reg(UMCCH_ADDR_CFG),
+ &tmp);
edac_dbg(1, "UMC%d LRDIMM %dx rank multiply\n",
i, 1 << ((tmp >> 4) & 0x3));
}
@@ -1505,7 +1522,7 @@ static void prep_chip_selects(struct amd64_pvt *pvt)
for_each_umc(umc) {
pvt->csels[umc].b_cnt = 4;
- pvt->csels[umc].m_cnt = 2;
+ pvt->csels[umc].m_cnt = fam_type->flags.zn_regs_v2 ? 4 : 2;
}
} else {
@@ -1545,7 +1562,7 @@ static void read_umc_base_mask(struct amd64_pvt *pvt)
}
umc_mask_reg = get_umc_base(umc) + UMCCH_ADDR_MASK;
- umc_mask_reg_sec = get_umc_base(umc) + UMCCH_ADDR_MASK_SEC;
+ umc_mask_reg_sec = get_umc_base(umc) + get_umc_reg(UMCCH_ADDR_MASK_SEC);
for_each_chip_select_mask(cs, umc, pvt) {
mask = &pvt->csels[umc].csmasks[cs];
@@ -1616,19 +1633,49 @@ static void read_dct_base_mask(struct amd64_pvt *pvt)
}
}
+static void determine_memory_type_df(struct amd64_pvt *pvt)
+{
+ struct amd64_umc *umc;
+ u32 i;
+
+ for_each_umc(i) {
+ umc = &pvt->umc[i];
+
+ if (!(umc->sdp_ctrl & UMC_SDP_INIT)) {
+ umc->dram_type = MEM_EMPTY;
+ continue;
+ }
+
+ /*
+ * Check if the system supports the "DDR Type" field in UMC Config
+ * and has DDR5 DIMMs in use.
+ */
+ if (fam_type->flags.zn_regs_v2 && ((umc->umc_cfg & GENMASK(2, 0)) == 0x1)) {
+ if (umc->dimm_cfg & BIT(5))
+ umc->dram_type = MEM_LRDDR5;
+ else if (umc->dimm_cfg & BIT(4))
+ umc->dram_type = MEM_RDDR5;
+ else
+ umc->dram_type = MEM_DDR5;
+ } else {
+ if (umc->dimm_cfg & BIT(5))
+ umc->dram_type = MEM_LRDDR4;
+ else if (umc->dimm_cfg & BIT(4))
+ umc->dram_type = MEM_RDDR4;
+ else
+ umc->dram_type = MEM_DDR4;
+ }
+
+ edac_dbg(1, " UMC%d DIMM type: %s\n", i, edac_mem_types[umc->dram_type]);
+ }
+}
+
static void determine_memory_type(struct amd64_pvt *pvt)
{
u32 dram_ctrl, dcsm;
- if (pvt->umc) {
- if ((pvt->umc[0].dimm_cfg | pvt->umc[1].dimm_cfg) & BIT(5))
- pvt->dram_type = MEM_LRDDR4;
- else if ((pvt->umc[0].dimm_cfg | pvt->umc[1].dimm_cfg) & BIT(4))
- pvt->dram_type = MEM_RDDR4;
- else
- pvt->dram_type = MEM_DDR4;
- return;
- }
+ if (pvt->umc)
+ return determine_memory_type_df(pvt);
switch (pvt->fam) {
case 0xf:
@@ -2149,6 +2196,7 @@ static int f17_addr_mask_to_cs_size(struct amd64_pvt *pvt, u8 umc,
{
u32 addr_mask_orig, addr_mask_deinterleaved;
u32 msb, weight, num_zero_bits;
+ int cs_mask_nr = csrow_nr;
int dimm, size = 0;
/* No Chip Selects are enabled. */
@@ -2164,17 +2212,33 @@ static int f17_addr_mask_to_cs_size(struct amd64_pvt *pvt, u8 umc,
return size;
/*
- * There is one mask per DIMM, and two Chip Selects per DIMM.
- * CS0 and CS1 -> DIMM0
- * CS2 and CS3 -> DIMM1
+ * Family 17h introduced systems with one mask per DIMM,
+ * and two Chip Selects per DIMM.
+ *
+ * CS0 and CS1 -> MASK0 / DIMM0
+ * CS2 and CS3 -> MASK1 / DIMM1
+ *
+ * Family 19h Model 10h introduced systems with one mask per Chip Select,
+ * and two Chip Selects per DIMM.
+ *
+ * CS0 -> MASK0 -> DIMM0
+ * CS1 -> MASK1 -> DIMM0
+ * CS2 -> MASK2 -> DIMM1
+ * CS3 -> MASK3 -> DIMM1
+ *
+ * Keep the mask number equal to the Chip Select number for newer systems,
+ * and shift the mask number for older systems.
*/
dimm = csrow_nr >> 1;
+ if (!fam_type->flags.zn_regs_v2)
+ cs_mask_nr >>= 1;
+
/* Asymmetric dual-rank DIMM support. */
if ((csrow_nr & 1) && (cs_mode & CS_ODD_SECONDARY))
- addr_mask_orig = pvt->csels[umc].csmasks_sec[dimm];
+ addr_mask_orig = pvt->csels[umc].csmasks_sec[cs_mask_nr];
else
- addr_mask_orig = pvt->csels[umc].csmasks[dimm];
+ addr_mask_orig = pvt->csels[umc].csmasks[cs_mask_nr];
/*
* The number of zero bits in the mask is equal to the number of bits
@@ -2930,6 +2994,7 @@ static struct amd64_family_type family_types[] = {
.f0_id = PCI_DEVICE_ID_AMD_19H_M10H_DF_F0,
.f6_id = PCI_DEVICE_ID_AMD_19H_M10H_DF_F6,
.max_mcs = 12,
+ .flags.zn_regs_v2 = 1,
.ops = {
.early_channel_count = f17_early_channel_count,
.dbam_to_cs = f17_addr_mask_to_cs_size,
@@ -3368,7 +3433,7 @@ 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 + get_umc_reg(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);
@@ -3452,7 +3517,9 @@ skip:
read_dct_base_mask(pvt);
determine_memory_type(pvt);
- edac_dbg(1, " DIMM type: %s\n", edac_mem_types[pvt->dram_type]);
+
+ if (!pvt->umc)
+ edac_dbg(1, " DIMM type: %s\n", edac_mem_types[pvt->dram_type]);
determine_ecc_sym_sz(pvt);
}
@@ -3548,7 +3615,7 @@ static int init_csrows_df(struct mem_ctl_info *mci)
pvt->mc_node_id, cs);
dimm->nr_pages = get_csrow_nr_pages(pvt, umc, cs);
- dimm->mtype = pvt->dram_type;
+ dimm->mtype = pvt->umc[umc].dram_type;
dimm->edac_mode = edac_mode;
dimm->dtype = dev_type;
dimm->grain = 64;
@@ -4269,7 +4336,7 @@ static int __init amd64_edac_init(void)
if (!x86_match_cpu(amd64_cpuids))
return -ENODEV;
- if (amd_cache_northbridges() < 0)
+ if (!amd_nb_num())
return -ENODEV;
opstate_init();
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