Thread (2 messages) 2 messages, 2 authors, 2017-08-13

[PATCH v2 4/6] edac: synopsys: Add ECC error injection support

From: bp@alien8.de (Borislav Petkov)
Date: 2017-08-13 13:03:02
Also in: linux-edac, lkml

On Mon, Aug 07, 2017 at 09:39:26AM +0200, Michal Simek wrote:
quoted hunk ↗ jump to hunk
@@ -181,6 +187,38 @@
 #define MEM_TYPE_DDR4	0x10
 #define MEM_TYPE_LPDDR4	0x10
 
+/* DDRC Software control register */
+#define DDRC_SWCTL	0x320
+
+/* DDRC ECC CE & UE poison mask */
+#define ECC_CEPOISON_MASK	0x3
+#define ECC_UEPOISON_MASK	0x1
+
+/* DDRC Device config masks */
+#define DDRC_MSTR_DEV_CONFIG_MASK	0xC0000000
+#define DDRC_MSTR_DEV_CONFIG_SHIFT	30
+#define DDRC_MSTR_DEV_CONFIG_X4_MASK	0
+#define DDRC_MSTR_DEV_CONFIG_X8_MASK	1
+#define DDRC_MSTR_DEV_CONFIG_X16_MASK	0x10
+#define DDRC_MSTR_DEV_CONFIG_X32_MASK	0X11
Ox
quoted hunk ↗ jump to hunk
+
+/* DDR4 and DDR3 device Row,Column,Bank Mapping */
+#define DDR4_COL_SHIFT		3
+#define DDR4_BANKGRP_SHIFT	13
+#define DDR4_BANK_SHIFT		15
+#define DDR4_ROW_SHIFT		17
+#define DDR4_COL_MASK		0x3FF
+#define DDR4_BANKGRP_MASK	0x3
+#define DDR4_BANK_MASK		0x3
+#define DDR4_ROW_MASK		0x7FFF
+
+#define DDR3_COL_SHIFT		3
+#define DDR3_BANK_SHIFT		13
+#define DDR3_ROW_SHIFT		16
+#define DDR3_COL_MASK		0x3FF
+#define DDR3_BANK_MASK		0x7
+#define DDR3_ROW_MASK		0x3FFF
+
 /**
  * struct ecc_error_info - ECC error log information
  * @row:	Row number
@@ -223,6 +261,7 @@ struct synps_ecc_status {
  * @p_data:	Pointer to platform data
  * @ce_cnt:	Correctable Error count
  * @ue_cnt:	Uncorrectable Error count
+ * @poison_addr: Data poison address
  */
 struct synps_edac_priv {
 	void __iomem *baseaddr;
@@ -231,6 +270,7 @@ struct synps_edac_priv {
 	const struct synps_platform_data *p_data;
 	u32 ce_cnt;
 	u32 ue_cnt;
+	ulong poison_addr;
unsigned long

Also, this error injection interface needs to go to debugfs and be
behind CONFIG_EDAC_DEBUG. We don't want error injection capability
present on production systems.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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