raw/ifpga/base: expose SEU error

This patch exposes SEU error information to application then application
could compare this information (128bit) with its own SMH file to know
if this SEU is a fatal error or not.

Signed-off-by: Tianfei Zhang <tianfei.zhang@intel.com>
Signed-off-by: Andy Pei <andy.pei@intel.com>

diff --git a/drivers/raw/ifpga/base/ifpga_defines.h b/drivers/raw/ifpga/base/ifpga_defines.h
index 4216128..b450cb1 100644 (file)
--- a/drivers/raw/ifpga/base/ifpga_defines.h
+++ b/drivers/raw/ifpga/base/ifpga_defines.h
@@ -1149,7 +1149,8 @@ struct feature_fme_error_capability {
                        u8 support_intr:1;
                        /* MSI-X vector table entry number */
                        u16 intr_vector_num:12;
-                       u64 rsvd:51;    /* Reserved */
+                       u64 rsvd:50;    /* Reserved */
+                       u64 seu_support:1;
                };
        };
 };
@@ -1171,6 +1172,8 @@ struct feature_fme_err {
        struct feature_fme_ras_catfaterror ras_catfaterr;
        struct feature_fme_ras_error_inj ras_error_inj;
        struct feature_fme_error_capability fme_err_capability;
+       u64 seu_emr_l;
+       u64 seu_emr_h;
 };
 
 /* FME Partial Reconfiguration Control */

diff --git a/drivers/raw/ifpga/base/ifpga_fme_error.c b/drivers/raw/ifpga/base/ifpga_fme_error.c
index be041ec..5d6d630 100644 (file)
--- a/drivers/raw/ifpga/base/ifpga_fme_error.c
+++ b/drivers/raw/ifpga/base/ifpga_fme_error.c
@@ -257,6 +257,33 @@ static void fme_global_error_uinit(struct ifpga_feature *feature)
        UNUSED(feature);
 }
 
+static int fme_err_check_seu(struct feature_fme_err *fme_err)
+{
+       struct feature_fme_error_capability error_cap;
+
+       error_cap.csr = readq(&fme_err->fme_err_capability);
+
+       return error_cap.seu_support ? 1 : 0;
+}
+
+static int fme_err_get_seu_emr(struct ifpga_fme_hw *fme,
+               u64 *val, bool high)
+{
+       struct feature_fme_err *fme_err
+               = get_fme_feature_ioaddr_by_index(fme,
+                               FME_FEATURE_ID_GLOBAL_ERR);
+
+       if (!fme_err_check_seu(fme_err))
+               return -ENODEV;
+
+       if (high)
+               *val = readq(&fme_err->seu_emr_h);
+       else
+               *val = readq(&fme_err->seu_emr_l);
+
+       return 0;
+}
+
 static int fme_err_fme_err_get_prop(struct ifpga_feature *feature,
                                    struct feature_prop *prop)
 {
@@ -270,6 +297,10 @@ static int fme_err_fme_err_get_prop(struct ifpga_feature *feature,
                return fme_err_get_first_error(fme, &prop->data);
        case 0x3: /* NEXT_ERROR */
                return fme_err_get_next_error(fme, &prop->data);
+       case 0x5: /* SEU EMR LOW */
+               return fme_err_get_seu_emr(fme, &prop->data, 0);
+       case 0x6: /* SEU EMR HIGH */
+               return fme_err_get_seu_emr(fme, &prop->data, 1);
        }
 
        return -ENOENT;

diff --git a/drivers/raw/ifpga/base/opae_ifpga_hw_api.h b/drivers/raw/ifpga/base/opae_ifpga_hw_api.h
index 4c2c990..bab3386 100644 (file)
--- a/drivers/raw/ifpga/base/opae_ifpga_hw_api.h
+++ b/drivers/raw/ifpga/base/opae_ifpga_hw_api.h
@@ -74,6 +74,8 @@ struct feature_prop {
 #define FME_ERR_PROP_FIRST_ERROR       ERR_PROP_FME_ERR(0x2)
 #define FME_ERR_PROP_NEXT_ERROR                ERR_PROP_FME_ERR(0x3)
 #define FME_ERR_PROP_CLEAR             ERR_PROP_FME_ERR(0x4)   /* WO */
+#define FME_ERR_PROP_SEU_EMR_LOW        ERR_PROP_FME_ERR(0x5)
+#define FME_ERR_PROP_SEU_EMR_HIGH       ERR_PROP_FME_ERR(0x6)
 #define FME_ERR_PROP_REVISION          ERR_PROP_ROOT(0x5)
 #define FME_ERR_PROP_PCIE0_ERRORS      ERR_PROP_ROOT(0x6)      /* RW */
 #define FME_ERR_PROP_PCIE1_ERRORS      ERR_PROP_ROOT(0x7)      /* RW */