[Xen-devel] [PATCH 10/11] driver/edac: Add support for Hygon's Dhyana Family 18h processor

[Pu Wen <puwen@xxxxxxxx>]

This patch enables the EDAC driver support to Hygon Family 18h CPU:
- Add MCE support for Hygon Family 18h.
- Add HYGON_F18_CPUS in amd_families enum to enable Hygon Family 18h support.
- Add HYGON_F18_CPUS in family_types[] to support Hygon Family 18h.
- Add Hygon Family 18h support in determine_memory_type(), per_family_init()
  and scrub rate codes.
- Add X86_VENDOR_HYGON in amd64_cpuids[].

Signed-off-by: Pu Wen <puwen@xxxxxxxx>
---
 drivers/edac/amd64_edac.c | 20 +++++++++++++++++++-
 drivers/edac/amd64_edac.h |  4 ++++
 drivers/edac/mce_amd.c    |  4 +++-
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 329cb96..a2e02c5 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -211,7 +211,7 @@ static int __set_scrub_rate(struct amd64_pvt *pvt, u32 
new_bw, u32 min_rate)
 
        scrubval = scrubrates[i].scrubval;
 
-       if (pvt->fam == 0x17) {
+       if (pvt->fam == 0x17 || pvt->fam == 0x18) {
                __f17h_set_scrubval(pvt, scrubval);
        } else if (pvt->fam == 0x15 && pvt->model == 0x60) {
                f15h_select_dct(pvt, 0);
@@ -264,6 +264,7 @@ static int get_scrub_rate(struct mem_ctl_info *mci)
                break;
 
        case 0x17:
+       case 0x18:
                amd64_read_pci_cfg(pvt->F6, F17H_SCR_BASE_ADDR, &scrubval);
                if (scrubval & BIT(0)) {
                        amd64_read_pci_cfg(pvt->F6, F17H_SCR_LIMIT_ADDR, 
&scrubval);
@@ -1044,6 +1045,7 @@ static void determine_memory_type(struct amd64_pvt *pvt)
                goto ddr3;
 
        case 0x17:
+       case 0x18:
                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))
@@ -2200,6 +2202,16 @@ static struct amd64_family_type family_types[] = {
                        .dbam_to_cs             = f17_base_addr_to_cs_size,
                }
        },
+       [HYGON_F18_CPUS] = {
+               /* Hygon F18h uses the same AMD F17h support */
+               .ctl_name = "Hygon_F18h",
+               .f0_id = PCI_DEVICE_ID_HYGON_18H_DF_F0,
+               .f6_id = PCI_DEVICE_ID_HYGON_18H_DF_F6,
+               .ops = {
+                       .early_channel_count    = f17_early_channel_count,
+                       .dbam_to_cs             = f17_base_addr_to_cs_size,
+               }
+       },
 };
 
 /*
@@ -3192,6 +3204,11 @@ static struct amd64_family_type *per_family_init(struct 
amd64_pvt *pvt)
                pvt->ops        = &family_types[F17_CPUS].ops;
                break;
 
+       case 0x18:
+               fam_type        = &family_types[HYGON_F18_CPUS];
+               pvt->ops        = &family_types[HYGON_F18_CPUS].ops;
+               break;
+
        default:
                amd64_err("Unsupported family!\n");
                return NULL;
@@ -3428,6 +3445,7 @@ static const struct x86_cpu_id amd64_cpuids[] = {
        { X86_VENDOR_AMD, 0x15, X86_MODEL_ANY,  X86_FEATURE_ANY, 0 },
        { X86_VENDOR_AMD, 0x16, X86_MODEL_ANY,  X86_FEATURE_ANY, 0 },
        { X86_VENDOR_AMD, 0x17, X86_MODEL_ANY,  X86_FEATURE_ANY, 0 },
+       { X86_VENDOR_HYGON, 0x18, X86_MODEL_ANY, X86_FEATURE_ANY, 0 },
        { }
 };
 MODULE_DEVICE_TABLE(x86cpu, amd64_cpuids);
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index 1d4b74e..3dec27d 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -116,6 +116,9 @@
 #define PCI_DEVICE_ID_AMD_17H_DF_F0    0x1460
 #define PCI_DEVICE_ID_AMD_17H_DF_F6    0x1466
 
+#define PCI_DEVICE_ID_HYGON_18H_DF_F0  PCI_DEVICE_ID_AMD_17H_DF_F0
+#define PCI_DEVICE_ID_HYGON_18H_DF_F6  PCI_DEVICE_ID_AMD_17H_DF_F6
+
 /*
  * Function 1 - Address Map
  */
@@ -281,6 +284,7 @@ enum amd_families {
        F16_CPUS,
        F16_M30H_CPUS,
        F17_CPUS,
+       HYGON_F18_CPUS,
        NUM_FAMILIES,
 };
 
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index 2ab4d61..c605089 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -1059,7 +1059,8 @@ static int __init mce_amd_init(void)
 {
        struct cpuinfo_x86 *c = &boot_cpu_data;
 
-       if (c->x86_vendor != X86_VENDOR_AMD)
+       if (c->x86_vendor != X86_VENDOR_AMD &&
+           c->x86_vendor != X86_VENDOR_HYGON)
                return -ENODEV;
 
        fam_ops = kzalloc(sizeof(struct amd_decoder_ops), GFP_KERNEL);
@@ -1113,6 +1114,7 @@ static int __init mce_amd_init(void)
                break;
 
        case 0x17:
+       case 0x18:
                xec_mask = 0x3f;
                if (!boot_cpu_has(X86_FEATURE_SMCA)) {
                        printk(KERN_WARNING "Decoding supported only on 
Scalable MCA processors.\n");
-- 
2.7.4


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