[dpdk-dev] [PATCH v6 04/17] raw/ifpga/base: add SEU error support

[Ye Xiaolong]

On 09/19, Andy Pei wrote:
>From: Tianfei zhang <tianfei.zhang at intel.com>
>
>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 at intel.com>
>Signed-off-by: Andy Pei <andy.pei at intel.com>
>---
> drivers/raw/ifpga/base/ifpga_defines.h     |  5 +++-
> drivers/raw/ifpga/base/ifpga_fme_error.c   | 43 ++++++++++++++++++++++++++++++
> drivers/raw/ifpga/base/opae_ifpga_hw_api.h |  2 ++
> 3 files changed, 49 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/raw/ifpga/base/ifpga_defines.h b/drivers/raw/ifpga/base/ifpga_defines.h
>index 4216128..b450cb1 100644
>--- 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 a6d3dab..c9bac15 100644
>--- a/drivers/raw/ifpga/base/ifpga_fme_error.c
>+++ b/drivers/raw/ifpga/base/ifpga_fme_error.c
>@@ -257,6 +257,45 @@ 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_low(struct ifpga_fme_hw *fme,
>+		u64 *val)
>+{
>+	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;
>+
>+	*val = readq(&fme_err->seu_emr_l);
>+
>+	return 0;
>+}
>+
>+static int fme_err_get_seu_emr_high(struct ifpga_fme_hw *fme,
>+		u64 *val)
>+{
>+	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;
>+
>+	*val = readq(&fme_err->seu_emr_h);
>+
>+	return 0;
>+}

Above 2 functions can be combined to reduce duplication.

>+
> static int fme_err_fme_err_get_prop(struct ifpga_feature *feature,
> 				    struct feature_prop *prop)
> {
>@@ -270,6 +309,10 @@ 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_low(fme, &prop->data);
>+	case 0x6: /* SEU EMR HIGH */
>+		return fme_err_get_seu_emr_high(fme, &prop->data);
> 	}
> 
> 	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
>--- 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 */
>-- 
>1.8.3.1
>