From: Muralidhara M K <muralidhara.mk@amd.com>
...and call them using a function pointer in pvt->ops. The "ECC enabled"
check is done outside of the hardware information gathering done in
hw_info_get(). So a high-level function pointer is needed to separate
the legacy and modern paths.
No functional change is intended.
Signed-off-by: Muralidhara M K <muralidhara.mk@amd.com>
Co-developed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com>
Signed-off-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com>
[Rebased/reworked patch and reworded commit message]
Co-developed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
---
Link:
https://lore.kernel.org/r/20220509145534.44912-12-yazen.ghannam@amd.com
v1->v2:
* Update commit message.
drivers/edac/amd64_edac.c | 69 ++++++++++++++++++++++-----------------
drivers/edac/amd64_edac.h | 1 +
2 files changed, 40 insertions(+), 30 deletions(-)
@@ -3527,52 +3527,59 @@ static void restore_ecc_error_reporting(struct ecc_settings *s, u16 nid,
amd64_warn("Error restoring NB MCGCTL settings!\n");
}
-static bool ecc_enabled(struct amd64_pvt *pvt)
+static bool dct_ecc_enabled(struct amd64_pvt *pvt)
{
u16 nid = pvt->mc_node_id;
bool nb_mce_en = false;
- u8 ecc_en = 0, i;
+ u8 ecc_en = 0;
u32 value;
- if (boot_cpu_data.x86 >= 0x17) {
- u8 umc_en_mask = 0, ecc_en_mask = 0;
- struct amd64_umc *umc;
+ amd64_read_pci_cfg(pvt->F3, NBCFG, &value);
- for_each_umc(i) {
- umc = &pvt->umc[i];
+ ecc_en = !!(value & NBCFG_ECC_ENABLE);
- /* Only check enabled UMCs. */
- if (!(umc->sdp_ctrl & UMC_SDP_INIT))
- continue;
+ nb_mce_en = nb_mce_bank_enabled_on_node(nid);
+ if (!nb_mce_en)
+ edac_dbg(0, "NB MCE bank disabled, set MSR 0x%08x[4] on node %d to enable.\n",
+ MSR_IA32_MCG_CTL, nid);
- umc_en_mask |= BIT(i);
+ edac_dbg(3, "Node %d: DRAM ECC %s.\n", nid, (ecc_en ? "enabled" : "disabled"));
- if (umc->umc_cap_hi & UMC_ECC_ENABLED)
- ecc_en_mask |= BIT(i);
- }
+ if (!ecc_en || !nb_mce_en)
+ return false;
+ else
+ return true;
+}
- /* Check whether at least one UMC is enabled: */
- if (umc_en_mask)
- ecc_en = umc_en_mask == ecc_en_mask;
- else
- edac_dbg(0, "Node %d: No enabled UMCs.\n", nid);
+static bool umc_ecc_enabled(struct amd64_pvt *pvt)
+{
+ u8 umc_en_mask = 0, ecc_en_mask = 0;
+ u16 nid = pvt->mc_node_id;
+ struct amd64_umc *umc;
+ u8 ecc_en = 0, i;
- /* Assume UMC MCA banks are enabled. */
- nb_mce_en = true;
- } else {
- amd64_read_pci_cfg(pvt->F3, NBCFG, &value);
+ for_each_umc(i) {
+ umc = &pvt->umc[i];
+
+ /* Only check enabled UMCs. */
+ if (!(umc->sdp_ctrl & UMC_SDP_INIT))
+ continue;
- ecc_en = !!(value & NBCFG_ECC_ENABLE);
+ umc_en_mask |= BIT(i);
- nb_mce_en = nb_mce_bank_enabled_on_node(nid);
- if (!nb_mce_en)
- edac_dbg(0, "NB MCE bank disabled, set MSR 0x%08x[4] on node %d to enable.\n",
- MSR_IA32_MCG_CTL, nid);
+ if (umc->umc_cap_hi & UMC_ECC_ENABLED)
+ ecc_en_mask |= BIT(i);
}
+ /* Check whether at least one UMC is enabled: */
+ if (umc_en_mask)
+ ecc_en = umc_en_mask == ecc_en_mask;
+ else
+ edac_dbg(0, "Node %d: No enabled UMCs.\n", nid);
+
edac_dbg(3, "Node %d: DRAM ECC %s.\n", nid, (ecc_en ? "enabled" : "disabled"));
- if (!ecc_en || !nb_mce_en)
+ if (!ecc_en)
return false;
else
return true;
@@ -3678,6 +3685,7 @@ static void hw_info_put(struct amd64_pvt *pvt)
static struct low_ops umc_ops = {
.hw_info_get = umc_hw_info_get,
+ .ecc_enabled = umc_ecc_enabled,
};
/* Use Family 16h versions for defaults and adjust as needed below. */
@@ -3685,6 +3693,7 @@ static struct low_ops dct_ops = {
.map_sysaddr_to_csrow = f1x_map_sysaddr_to_csrow,
.dbam_to_cs = f16_dbam_to_chip_select,
.hw_info_get = dct_hw_info_get,
+ .ecc_enabled = dct_ecc_enabled,
};
static int per_family_init(struct amd64_pvt *pvt)
@@ -3910,7 +3919,7 @@ static int probe_one_instance(unsigned int nid)
goto err_enable;
}
- if (!ecc_enabled(pvt)) {
+ if (!pvt->ops->ecc_enabled(pvt)) {
ret = -ENODEV;
if (!ecc_enable_override)
@@ -467,6 +467,7 @@ struct low_ops {
int (*dbam_to_cs)(struct amd64_pvt *pvt, u8 dct,
unsigned int cs_mode, int cs_mask_nr);
int (*hw_info_get)(struct amd64_pvt *pvt);
+ bool (*ecc_enabled)(struct amd64_pvt *pvt);
};
int __amd64_read_pci_cfg_dword(struct pci_dev *pdev, int offset,