EDAC, amd64: Add AMD Fam17h family type and ops

Add a family type and associated ops for Fam17h. Define a struct to hold
all the UMC registers that we need. Make this a part of struct amd64_pvt
in order to maximize code reuse in the rest of the driver.

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/1479423463-8536-10-git-send-email-Yazen.Ghannam@amd.com
Signed-off-by: Borislav Petkov <bp@suse.de>

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 870f567..bb70392 100644 (file)
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -1210,6 +1210,19 @@ static int f1x_early_channel_count(struct amd64_pvt *pvt)
        return channels;
 }
 
+static int f17_early_channel_count(struct amd64_pvt *pvt)
+{
+       int i, channels = 0;
+
+       /* SDP Control bit 31 (SdpInit) is clear for unused UMC channels */
+       for (i = 0; i < NUM_UMCS; i++)
+               channels += !!(pvt->umc[i].sdp_ctrl & UMC_SDP_INIT);
+
+       amd64_info("MCT channel count: %d\n", channels);
+
+       return channels;
+}
+
 static int ddr3_cs_size(unsigned i, bool dct_width)
 {
        unsigned shift = 0;
@@ -1337,6 +1350,23 @@ static int f16_dbam_to_chip_select(struct amd64_pvt *pvt, u8 dct,
                return ddr3_cs_size(cs_mode, false);
 }
 
+static int f17_base_addr_to_cs_size(struct amd64_pvt *pvt, u8 umc,
+                                   unsigned int cs_mode, int csrow_nr)
+{
+       u32 base_addr = pvt->csels[umc].csbases[csrow_nr];
+
+       /*  Each mask is used for every two base addresses. */
+       u32 addr_mask = pvt->csels[umc].csmasks[csrow_nr >> 1];
+
+       /*  Register [31:1] = Address [39:9]. Size is in kBs here. */
+       u32 size = ((addr_mask >> 1) - (base_addr >> 1) + 1) >> 1;
+
+       edac_dbg(1, "BaseAddr: 0x%x, AddrMask: 0x%x\n", base_addr, addr_mask);
+
+       /* Return size in MBs. */
+       return size >> 10;
+}
+
 static void read_dram_ctl_register(struct amd64_pvt *pvt)
 {
 
@@ -1989,6 +2019,15 @@ static struct amd64_family_type family_types[] = {
                        .dbam_to_cs             = f16_dbam_to_chip_select,
                }
        },
+       [F17_CPUS] = {
+               .ctl_name = "F17h",
+               .f0_id = PCI_DEVICE_ID_AMD_17H_DF_F0,
+               .f6_id = PCI_DEVICE_ID_AMD_17H_DF_F6,
+               .ops = {
+                       .early_channel_count    = f17_early_channel_count,
+                       .dbam_to_cs             = f17_base_addr_to_cs_size,
+               }
+       },
 };
 
 /*
@@ -2790,6 +2829,11 @@ static struct amd64_family_type *per_family_init(struct amd64_pvt *pvt)
                pvt->ops        = &family_types[F16_CPUS].ops;
                break;
 
+       case 0x17:
+               fam_type        = &family_types[F17_CPUS];
+               pvt->ops        = &family_types[F17_CPUS].ops;
+               break;
+
        default:
                amd64_err("Unsupported family!\n");
                return NULL;

diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index 96c1f5d..ada39f1 100644 (file)
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -118,6 +118,8 @@
 #define PCI_DEVICE_ID_AMD_16H_NB_F2    0x1532
 #define PCI_DEVICE_ID_AMD_16H_M30H_NB_F1 0x1581
 #define PCI_DEVICE_ID_AMD_16H_M30H_NB_F2 0x1582
+#define PCI_DEVICE_ID_AMD_17H_DF_F0    0x1460
+#define PCI_DEVICE_ID_AMD_17H_DF_F6    0x1466
 
 /*
  * Function 1 - Address Map
@@ -266,6 +268,7 @@ enum amd_families {
        F15_M60H_CPUS,
        F16_CPUS,
        F16_M30H_CPUS,
+       F17_CPUS,
        NUM_FAMILIES,
 };
 
@@ -298,6 +301,10 @@ struct chip_select {
        u8 m_cnt;
 };
 
+struct amd64_umc {
+       u32 sdp_ctrl;           /* SDP Control reg */
+};
+
 struct amd64_pvt {
        struct low_ops *ops;
 
@@ -345,6 +352,8 @@ struct amd64_pvt {
 
        /* cache the dram_type */
        enum mem_type dram_type;
+
+       struct amd64_umc *umc;  /* UMC registers */
 };
 
 enum err_codes {
@@ -438,7 +447,7 @@ struct low_ops {
 
 struct amd64_family_type {
        const char *ctl_name;
-       u16 f1_id, f2_id;
+       u16 f0_id, f1_id, f2_id, f6_id;
        struct low_ops ops;
 };