[PATCH v3 3/4] edac: Add L3/SoC EDAC support to the APM X-Gene SoC EDAC driver

[Loc Ho <lho-qTEPVZfXA3Y@public.gmane.org>]

This patch adds EDAC support for the L3 and SoC components.

Signed-off-by: Loc Ho <lho-qTEPVZfXA3Y@public.gmane.org>
---
 drivers/edac/xgene_edac.c |  827 ++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 815 insertions(+), 12 deletions(-)

diff --git a/drivers/edac/xgene_edac.c b/drivers/edac/xgene_edac.c
index ba06904..d5e33bf 100644
--- a/drivers/edac/xgene_edac.c
+++ b/drivers/edac/xgene_edac.c
@@ -66,6 +66,8 @@ struct xgene_edac {
 
 	struct list_head	mcus;
 	struct list_head	pmds;
+	struct list_head	l3s;
+	struct list_head	socs;
 
 	struct mutex		mc_lock;
 	int			mc_active_mask;
@@ -877,8 +879,8 @@ static const struct file_operations xgene_edac_pmd_debug_inject_fops[] = {
 	{ }
 };
 
-static void xgene_edac_pmd_create_debugfs_nodes(
-	struct edac_device_ctl_info *edac_dev)
+static void
+xgene_edac_pmd_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev)
 {
 	struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
 	struct dentry *edac_debugfs;
@@ -887,10 +889,6 @@ static void xgene_edac_pmd_create_debugfs_nodes(
 	if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
 		return;
 
-	/*
-	 * Todo: Switch to common EDAC debug file system for edac device
-	 *       when available.
-	 */
 	if (!ctx->edac->dfs) {
 		ctx->edac->dfs = debugfs_create_dir(edac_dev->dev->kobj.name,
 						    NULL);
@@ -1016,10 +1014,791 @@ static int xgene_edac_pmd_remove(struct xgene_edac_pmd_ctx *pmd)
 	return 0;
 }
 
+/* L3 Error device */
+#define L3C_ESR				(0x0A * 4)
+#define  L3C_ESR_DATATAG_MASK		BIT(9)
+#define  L3C_ESR_MULTIHIT_MASK		BIT(8)
+#define  L3C_ESR_UCEVICT_MASK		BIT(6)
+#define  L3C_ESR_MULTIUCERR_MASK	BIT(5)
+#define  L3C_ESR_MULTICERR_MASK		BIT(4)
+#define  L3C_ESR_UCERR_MASK		BIT(3)
+#define  L3C_ESR_CERR_MASK		BIT(2)
+#define  L3C_ESR_UCERRINTR_MASK		BIT(1)
+#define  L3C_ESR_CERRINTR_MASK		BIT(0)
+#define L3C_ECR				(0x0B * 4)
+#define  L3C_ECR_UCINTREN		BIT(3)
+#define  L3C_ECR_CINTREN		BIT(2)
+#define  L3C_UCERREN			BIT(1)
+#define  L3C_CERREN			BIT(0)
+#define L3C_ELR				(0x0C * 4)
+#define  L3C_ELR_ERRSYN(src)		((src & 0xFF800000) >> 23)
+#define  L3C_ELR_ERRWAY(src)		((src & 0x007E0000) >> 17)
+#define  L3C_ELR_AGENTID(src)		((src & 0x0001E000) >> 13)
+#define  L3C_ELR_ERRGRP(src)		((src & 0x00000F00) >> 8)
+#define  L3C_ELR_OPTYPE(src)		((src & 0x000000F0) >> 4)
+#define  L3C_ELR_PADDRHIGH(src)		(src & 0x0000000F)
+#define L3C_AELR			(0x0D * 4)
+#define L3C_BELR			(0x0E * 4)
+#define  L3C_BELR_BANK(src)		(src & 0x0000000F)
+
+struct xgene_edac_dev_ctx {
+	struct list_head	next;
+	struct device		ddev;
+	char			*name;
+	struct xgene_edac	*edac;
+	struct edac_device_ctl_info *edac_dev;
+	int			edac_idx;
+	void __iomem		*dev_csr;
+	int			version;
+};
+
+static bool xgene_edac_l3_v1_errata_chk(u32 l3cesr, u32 l3celr)
+{
+	/*
+	 * L3 version 1 has certain conditions in which correctable error
+	 * needs to be flagged as un-correctable error. This function
+	 * check for such conditions.
+	 */
+	if (l3cesr & L3C_ESR_DATATAG_MASK) {
+		switch (L3C_ELR_ERRSYN(l3celr)) {
+		case 0x13C:
+		case 0x0B4:
+		case 0x007:
+		case 0x00D:
+		case 0x00E:
+		case 0x019:
+		case 0x01A:
+		case 0x01C:
+		case 0x04E:
+		case 0x041:
+			return true;
+		}
+	} else if (L3C_ELR_ERRSYN(l3celr) == 9) {
+		return true;
+	}
+
+	return false;
+}
+
+static void xgene_edac_l3_check(struct edac_device_ctl_info *edac_dev)
+{
+	struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
+	u32 l3cesr;
+	u32 l3celr;
+	u32 l3caelr;
+	u32 l3cbelr;
+
+	l3cesr = readl(ctx->dev_csr + L3C_ESR);
+	if (!(l3cesr & (L3C_ESR_UCERR_MASK | L3C_ESR_CERR_MASK)))
+		return;
+
+	if (l3cesr & L3C_ESR_UCERR_MASK)
+		dev_err(edac_dev->dev, "L3C uncorrectable error\n");
+	if (l3cesr & L3C_ESR_CERR_MASK)
+		dev_warn(edac_dev->dev, "L3C correctable error\n");
+
+	l3celr = readl(ctx->dev_csr + L3C_ELR);
+	l3caelr = readl(ctx->dev_csr + L3C_AELR);
+	l3cbelr = readl(ctx->dev_csr + L3C_BELR);
+	if (l3cesr & L3C_ESR_MULTIHIT_MASK)
+		dev_err(edac_dev->dev, "L3C multiple hit error\n");
+	if (l3cesr & L3C_ESR_UCEVICT_MASK)
+		dev_err(edac_dev->dev,
+			"L3C dropped eviction of line with error\n");
+	if (l3cesr & L3C_ESR_MULTIUCERR_MASK)
+		dev_err(edac_dev->dev, "L3C multiple uncorrectable error\n");
+	if (l3cesr & L3C_ESR_DATATAG_MASK)
+		dev_err(edac_dev->dev,
+			"L3C data error syndrome 0x%X group 0x%X\n",
+			L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRGRP(l3celr));
+	else
+		dev_err(edac_dev->dev,
+			"L3C tag error syndrome 0x%X Way of Tag 0x%X Agent ID 0x%X Operation type 0x%X\n",
+			L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRWAY(l3celr),
+			L3C_ELR_AGENTID(l3celr), L3C_ELR_OPTYPE(l3celr));
+	/*
+	 * NOTE: Address [41:38] in L3C_ELR_PADDRHIGH(l3celr).
+	 *       Address [37:6] in l3caelr. Lower 6 bits are zero.
+	 */
+	dev_err(edac_dev->dev, "L3C error address 0x%08X.%08X bank %d\n",
+		L3C_ELR_PADDRHIGH(l3celr) << 6 | (l3caelr >> 26),
+		(l3caelr & 0x3FFFFFFF) << 6, L3C_BELR_BANK(l3cbelr));
+	dev_err(edac_dev->dev,
+		"L3C error status register value 0x%X\n", l3cesr);
+
+	/* Clear L3C error interrupt */
+	writel(0, ctx->dev_csr + L3C_ESR);
+
+	if (ctx->version <= 1 &&
+	    xgene_edac_l3_v1_errata_chk(l3cesr, l3celr)) {
+		/*
+		 * Version 1 of the L3C has broken single bit correctable
+		 * logic for certain condition. When such condition is
+		 * detected, map them as uncorrectable.
+		 */
+		edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
+		return;
+	}
+	if (l3cesr & L3C_ESR_CERR_MASK)
+		edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
+	if (l3cesr & L3C_ESR_UCERR_MASK)
+		edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
+}
+
+static void xgene_edac_l3_hw_init(struct edac_device_ctl_info *edac_dev,
+				  bool enable)
+{
+	struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
+	u32 val;
+
+	val = readl(ctx->dev_csr + L3C_ECR);
+	val |= L3C_UCERREN | L3C_CERREN;
+	/* On disable, we just disable interrupt but keep error enabled */
+	if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
+		if (enable)
+			val |= L3C_ECR_UCINTREN | L3C_ECR_CINTREN;
+		else
+			val &= ~(L3C_ECR_UCINTREN | L3C_ECR_CINTREN);
+	}
+	writel(val, ctx->dev_csr + L3C_ECR);
+
+	if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
+		/* Enable/disable L3 error top level interrupt */
+		if (enable) {
+			xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
+					       L3C_UNCORR_ERR_MASK);
+			xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
+					       L3C_CORR_ERR_MASK);
+		} else {
+			xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
+					       L3C_UNCORR_ERR_MASK);
+			xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
+					       L3C_CORR_ERR_MASK);
+		}
+	}
+}
+
+static ssize_t xgene_edac_l3_inject_ctrl_write(struct file *file,
+					       const char __user *data,
+					       size_t count, loff_t *ppos)
+{
+	struct edac_device_ctl_info *edac_dev = file->private_data;
+	struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
+
+	/* Generate all errors */
+	writel(0xFFFFFFFF, ctx->dev_csr + L3C_ESR);
+	return count;
+}
+
+static const struct file_operations xgene_edac_l3_debug_inject_fops = {
+	.open = simple_open,
+	.write = xgene_edac_l3_inject_ctrl_write,
+	.llseek = generic_file_llseek
+};
+
+static void xgene_edac_l3_create_debugfs_nodes(
+	struct edac_device_ctl_info *edac_dev)
+{
+	struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
+	struct dentry *edac_debugfs;
+	char name[30];
+
+	if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
+		return;
+
+	if (!ctx->edac->dfs) {
+		ctx->edac->dfs = debugfs_create_dir(edac_dev->dev->kobj.name,
+						    NULL);
+		if (!ctx->edac->dfs)
+			return;
+	}
+	sprintf(name, "l3c%d", ctx->edac_idx);
+	edac_debugfs = debugfs_create_dir(name, ctx->edac->dfs);
+	if (!edac_debugfs)
+		return;
+
+	debugfs_create_file("l3_inject_ctrl", S_IWUSR, edac_debugfs, edac_dev,
+			    &xgene_edac_l3_debug_inject_fops);
+}
+
+static int xgene_edac_l3_add(struct xgene_edac *edac, struct device_node *np,
+			     int version)
+{
+	struct edac_device_ctl_info *edac_dev;
+	struct xgene_edac_dev_ctx *ctx;
+	struct resource res;
+	void __iomem *dev_csr;
+	int edac_idx;
+	int rc = 0;
+
+	if (!devres_open_group(edac->dev, xgene_edac_l3_add, GFP_KERNEL))
+		return -ENOMEM;
+
+	rc = of_address_to_resource(np, 0, &res);
+	if (rc < 0) {
+		dev_err(edac->dev, "no L3 resource address\n");
+		goto err_release_group;
+	}
+	dev_csr = devm_ioremap_resource(edac->dev, &res);
+	if (IS_ERR(dev_csr)) {
+		dev_err(edac->dev,
+			"devm_ioremap_resource failed for L3 resource address\n");
+		rc = PTR_ERR(dev_csr);
+		goto err_release_group;
+	}
+
+	edac_idx = edac_device_alloc_index();
+	edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
+					      "l3c", 1, "l3c", 1, 0, NULL, 0,
+					      edac_idx);
+	if (!edac_dev) {
+		rc = -ENOMEM;
+		goto err_release_group;
+	}
+
+	ctx = edac_dev->pvt_info;
+	ctx->dev_csr = dev_csr;
+	ctx->name = "xgene_l3_err";
+	ctx->edac_idx = edac_idx;
+	ctx->edac = edac;
+	ctx->edac_dev = edac_dev;
+	ctx->ddev = *edac->dev;
+	ctx->version = version;
+	edac_dev->dev = &ctx->ddev;
+	edac_dev->ctl_name = ctx->name;
+	edac_dev->dev_name = ctx->name;
+	edac_dev->mod_name = EDAC_MOD_STR;
+
+	if (edac_op_state == EDAC_OPSTATE_POLL)
+		edac_dev->edac_check = xgene_edac_l3_check;
+
+	xgene_edac_l3_create_debugfs_nodes(edac_dev);
+
+	rc = edac_device_add_device(edac_dev);
+	if (rc > 0) {
+		dev_err(edac->dev, "failed edac_device_add_device()\n");
+		rc = -ENOMEM;
+		goto err_ctl_free;
+	}
+
+	if (edac_op_state == EDAC_OPSTATE_INT)
+		edac_dev->op_state = OP_RUNNING_INTERRUPT;
+
+	list_add(&ctx->next, &edac->l3s);
+
+	xgene_edac_l3_hw_init(edac_dev, 1);
+
+	devres_remove_group(edac->dev, xgene_edac_l3_add);
+
+	dev_info(edac->dev, "X-Gene EDAC L3 registered\n");
+	return 0;
+
+err_ctl_free:
+	edac_device_free_ctl_info(edac_dev);
+err_release_group:
+	devres_release_group(edac->dev, xgene_edac_l3_add);
+	return rc;
+}
+
+static int xgene_edac_l3_remove(struct xgene_edac_dev_ctx *l3)
+{
+	struct edac_device_ctl_info *edac_dev = l3->edac_dev;
+
+	xgene_edac_l3_hw_init(edac_dev, 0);
+	edac_device_del_device(l3->edac->dev);
+	edac_device_free_ctl_info(edac_dev);
+	return 0;
+}
+
+/* SoC Error device */
+#define IOBAXIS0TRANSERRINTSTS		0x0000
+#define  IOBAXIS0_M_ILLEGAL_ACCESS_MASK	BIT(1)
+#define  IOBAXIS0_ILLEGAL_ACCESS_MASK	BIT(0)
+#define IOBAXIS0TRANSERRINTMSK		0x0004
+#define IOBAXIS0TRANSERRREQINFOL	0x0008
+#define IOBAXIS0TRANSERRREQINFOH	0x000c
+#define  REQTYPE_RD(src)		(((src) & BIT(0)))
+#define  ERRADDRH_RD(src)		(((src) & 0xffc00000) >> 22)
+#define IOBAXIS1TRANSERRINTSTS		0x0010
+#define IOBAXIS1TRANSERRINTMSK		0x0014
+#define IOBAXIS1TRANSERRREQINFOL	0x0018
+#define IOBAXIS1TRANSERRREQINFOH	0x001c
+#define IOBPATRANSERRINTSTS		0x0020
+#define  IOBPA_M_REQIDRAM_CORRUPT_MASK	BIT(7)
+#define  IOBPA_REQIDRAM_CORRUPT_MASK	BIT(6)
+#define  IOBPA_M_TRANS_CORRUPT_MASK	BIT(5)
+#define  IOBPA_TRANS_CORRUPT_MASK	BIT(4)
+#define  IOBPA_M_WDATA_CORRUPT_MASK	BIT(3)
+#define  IOBPA_WDATA_CORRUPT_MASK	BIT(2)
+#define  IOBPA_M_RDATA_CORRUPT_MASK	BIT(1)
+#define  IOBPA_RDATA_CORRUPT_MASK	BIT(0)
+#define IOBBATRANSERRINTSTS		0x0030
+#define  M_ILLEGAL_ACCESS_MASK		BIT(15)
+#define  ILLEGAL_ACCESS_MASK		BIT(14)
+#define  M_WIDRAM_CORRUPT_MASK		BIT(13)
+#define  WIDRAM_CORRUPT_MASK		BIT(12)
+#define  M_RIDRAM_CORRUPT_MASK		BIT(11)
+#define  RIDRAM_CORRUPT_MASK		BIT(10)
+#define  M_TRANS_CORRUPT_MASK		BIT(9)
+#define  TRANS_CORRUPT_MASK		BIT(8)
+#define  M_WDATA_CORRUPT_MASK		BIT(7)
+#define  WDATA_CORRUPT_MASK		BIT(6)
+#define  M_RBM_POISONED_REQ_MASK	BIT(5)
+#define  RBM_POISONED_REQ_MASK		BIT(4)
+#define  M_XGIC_POISONED_REQ_MASK	BIT(3)
+#define  XGIC_POISONED_REQ_MASK		BIT(2)
+#define  M_WRERR_RESP_MASK		BIT(1)
+#define  WRERR_RESP_MASK		BIT(0)
+#define IOBBATRANSERRREQINFOL		0x0038
+#define IOBBATRANSERRREQINFOH		0x003c
+#define  REQTYPE_F2_RD(src)		((src) & BIT(0))
+#define  ERRADDRH_F2_RD(src)		(((src) & 0xffc00000) >> 22)
+#define IOBBATRANSERRCSWREQID		0x0040
+#define XGICTRANSERRINTSTS		0x0050
+#define  M_WR_ACCESS_ERR_MASK		BIT(3)
+#define  WR_ACCESS_ERR_MASK		BIT(2)
+#define  M_RD_ACCESS_ERR_MASK		BIT(1)
+#define  RD_ACCESS_ERR_MASK		BIT(0)
+#define XGICTRANSERRINTMSK		0x0054
+#define XGICTRANSERRREQINFO		0x0058
+#define  REQTYPE_MASK			BIT(26)
+#define  ERRADDR_RD(src)		((src) & 0x03ffffff)
+#define GLBL_ERR_STS			0x0800
+#define  MDED_ERR_MASK			BIT(3)
+#define  DED_ERR_MASK			BIT(2)
+#define  MSEC_ERR_MASK			BIT(1)
+#define  SEC_ERR_MASK			BIT(0)
+#define GLBL_SEC_ERRL			0x0810
+#define GLBL_SEC_ERRH			0x0818
+#define GLBL_MSEC_ERRL			0x0820
+#define GLBL_MSEC_ERRH			0x0828
+#define GLBL_DED_ERRL			0x0830
+#define GLBL_DED_ERRLMASK		0x0834
+#define GLBL_DED_ERRH			0x0838
+#define GLBL_DED_ERRHMASK		0x083c
+#define GLBL_MDED_ERRL			0x0840
+#define GLBL_MDED_ERRLMASK		0x0844
+#define GLBL_MDED_ERRH			0x0848
+#define GLBL_MDED_ERRHMASK		0x084c
+
+static const char * const soc_mem_err_v1[] = {
+	"10GbE0",
+	"10GbE1",
+	"Security",
+	"SATA45",
+	"SATA23/ETH23",
+	"SATA01/ETH01",
+	"USB1",
+	"USB0",
+	"QML",
+	"QM0",
+	"QM1 (XGbE01)",
+	"PCIE4",
+	"PCIE3",
+	"PCIE2",
+	"PCIE1",
+	"PCIE0",
+	"CTX Manager",
+	"OCM",
+	"1GbE",
+	"CLE",
+	"AHBC",
+	"PktDMA",
+	"GFC",
+	"MSLIM",
+	"10GbE2",
+	"10GbE3",
+	"QM2 (XGbE23)",
+	"IOB",
+	"unknown",
+	"unknown",
+	"unknown",
+	"unknown",
+};
+
+static void xgene_edac_iob_gic_report(struct edac_device_ctl_info *edac_dev)
+{
+	struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
+	u32 err_addr_lo;
+	u32 err_addr_hi;
+	u32 reg;
+	u32 info;
+
+	/* GIC transaction error interrupt */
+	reg = readl(ctx->dev_csr + XGICTRANSERRINTSTS);
+	if (!reg)
+		goto chk_iob_err;
+	dev_err(edac_dev->dev, "XGIC transaction error\n");
+	if (reg & RD_ACCESS_ERR_MASK)
+		dev_err(edac_dev->dev, "XGIC read size error\n");
+	if (reg & M_RD_ACCESS_ERR_MASK)
+		dev_err(edac_dev->dev, "Multiple XGIC read size error\n");
+	if (reg & WR_ACCESS_ERR_MASK)
+		dev_err(edac_dev->dev, "XGIC write size error\n");
+	if (reg & M_WR_ACCESS_ERR_MASK)
+		dev_err(edac_dev->dev, "Multiple XGIC write size error\n");
+	info = readl(ctx->dev_csr + XGICTRANSERRREQINFO);
+	dev_err(edac_dev->dev, "XGIC %s access @ 0x%08X (0x%08X)\n",
+		info & REQTYPE_MASK ? "read" : "write", ERRADDR_RD(info),
+		info);
+	writel(reg, ctx->dev_csr + XGICTRANSERRINTSTS);
+
+chk_iob_err:
+	/* IOB memory error */
+	reg = readl(ctx->dev_csr + GLBL_ERR_STS);
+	if (!reg)
+		return;
+	if (reg & SEC_ERR_MASK) {
+		err_addr_lo = readl(ctx->dev_csr + GLBL_SEC_ERRL);
+		err_addr_hi = readl(ctx->dev_csr + GLBL_SEC_ERRH);
+		dev_err(edac_dev->dev,
+			"IOB single-bit correctable memory at 0x%08X.%08X error\n",
+			err_addr_lo, err_addr_hi);
+		writel(err_addr_lo, ctx->dev_csr + GLBL_SEC_ERRL);
+		writel(err_addr_hi, ctx->dev_csr + GLBL_SEC_ERRH);
+	}
+	if (reg & MSEC_ERR_MASK) {
+		err_addr_lo = readl(ctx->dev_csr + GLBL_MSEC_ERRL);
+		err_addr_hi = readl(ctx->dev_csr + GLBL_MSEC_ERRH);
+		dev_err(edac_dev->dev,
+			"IOB multiple single-bit correctable memory at 0x%08X.%08X error\n",
+			err_addr_lo, err_addr_hi);
+		writel(err_addr_lo, ctx->dev_csr + GLBL_MSEC_ERRL);
+		writel(err_addr_hi, ctx->dev_csr + GLBL_MSEC_ERRH);
+	}
+	if (reg & (SEC_ERR_MASK | MSEC_ERR_MASK))
+		edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
+
+	if (reg & DED_ERR_MASK) {
+		err_addr_lo = readl(ctx->dev_csr + GLBL_DED_ERRL);
+		err_addr_hi = readl(ctx->dev_csr + GLBL_DED_ERRH);
+		dev_err(edac_dev->dev,
+			"IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
+			err_addr_lo, err_addr_hi);
+		writel(err_addr_lo, ctx->dev_csr + GLBL_DED_ERRL);
+		writel(err_addr_hi, ctx->dev_csr + GLBL_DED_ERRH);
+	}
+	if (reg & MDED_ERR_MASK) {
+		err_addr_lo = readl(ctx->dev_csr + GLBL_MDED_ERRL);
+		err_addr_hi = readl(ctx->dev_csr + GLBL_MDED_ERRH);
+		dev_err(edac_dev->dev,
+			"Multiple IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
+			err_addr_lo, err_addr_hi);
+		writel(err_addr_lo, ctx->dev_csr + GLBL_MDED_ERRL);
+		writel(err_addr_hi, ctx->dev_csr + GLBL_MDED_ERRH);
+	}
+	if (reg & (DED_ERR_MASK | MDED_ERR_MASK))
+		edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
+}
+
+static void xgene_edac_rb_report(struct edac_device_ctl_info *edac_dev)
+{
+	struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
+	u32 err_addr_lo;
+	u32 err_addr_hi;
+	u32 reg;
+
+	/* IOB Bridge agent transaction error interrupt */
+	reg = readl(ctx->dev_csr + IOBBATRANSERRINTSTS);
+	if (!reg)
+		return;
+
+	dev_err(edac_dev->dev, "IOB bridge agent (BA) transaction error\n");
+	if (reg & WRERR_RESP_MASK)
+		dev_err(edac_dev->dev, "IOB BA write response error\n");
+	if (reg & M_WRERR_RESP_MASK)
+		dev_err(edac_dev->dev,
+			"Multiple IOB BA write response error\n");
+	if (reg & XGIC_POISONED_REQ_MASK)
+		dev_err(edac_dev->dev, "IOB BA XGIC poisoned write error\n");
+	if (reg & M_XGIC_POISONED_REQ_MASK)
+		dev_err(edac_dev->dev,
+			"Multiple IOB BA XGIC poisoned write error\n");
+	if (reg & RBM_POISONED_REQ_MASK)
+		dev_err(edac_dev->dev, "IOB BA RBM poisoned write error\n");
+	if (reg & M_RBM_POISONED_REQ_MASK)
+		dev_err(edac_dev->dev,
+			"Multiple IOB BA RBM poisoned write error\n");
+	if (reg & WDATA_CORRUPT_MASK)
+		dev_err(edac_dev->dev, "IOB BA write error\n");
+	if (reg & M_WDATA_CORRUPT_MASK)
+		dev_err(edac_dev->dev, "Multiple IOB BA write error\n");
+	if (reg & TRANS_CORRUPT_MASK)
+		dev_err(edac_dev->dev, "IOB BA transaction error\n");
+	if (reg & M_TRANS_CORRUPT_MASK)
+		dev_err(edac_dev->dev, "Multiple IOB BA transaction error\n");
+	if (reg & RIDRAM_CORRUPT_MASK)
+		dev_err(edac_dev->dev,
+			"IOB BA RDIDRAM read transaction ID error\n");
+	if (reg & M_RIDRAM_CORRUPT_MASK)
+		dev_err(edac_dev->dev,
+			"Multiple IOB BA RDIDRAM read transaction ID error\n");
+	if (reg & WIDRAM_CORRUPT_MASK)
+		dev_err(edac_dev->dev,
+			"IOB BA RDIDRAM write transaction ID error\n");
+	if (reg & M_WIDRAM_CORRUPT_MASK)
+		dev_err(edac_dev->dev,
+			"Multiple IOB BA RDIDRAM write transaction ID error\n");
+	if (reg & ILLEGAL_ACCESS_MASK)
+		dev_err(edac_dev->dev,
+			"IOB BA XGIC/RB illegal access error\n");
+	if (reg & M_ILLEGAL_ACCESS_MASK)
+		dev_err(edac_dev->dev,
+			"Multiple IOB BA XGIC/RB illegal access error\n");
+
+	err_addr_lo = readl(ctx->dev_csr + IOBBATRANSERRREQINFOL);
+	err_addr_hi = readl(ctx->dev_csr + IOBBATRANSERRREQINFOH);
+	dev_err(edac_dev->dev, "IOB BA %s access at 0x%02X.%08X (0x%08X)\n",
+		REQTYPE_F2_RD(err_addr_hi) ? "read" : "write",
+		ERRADDRH_F2_RD(err_addr_hi), err_addr_lo, err_addr_hi);
+	if (reg & WRERR_RESP_MASK)
+		dev_err(edac_dev->dev, "IOB BA requestor ID 0x%08X\n",
+			readl(ctx->dev_csr + IOBBATRANSERRCSWREQID));
+	writel(reg, ctx->dev_csr + IOBBATRANSERRINTSTS);
+}
+
+static void xgene_edac_pa_report(struct edac_device_ctl_info *edac_dev)
+{
+	struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
+	u32 err_addr_lo;
+	u32 err_addr_hi;
+	u32 reg;
+
+	/* IOB Processing agent transaction error interrupt */
+	reg = readl(ctx->dev_csr + IOBPATRANSERRINTSTS);
+	if (!reg)
+		goto chk_iob_axi0;
+	dev_err(edac_dev->dev, "IOB procesing agent (PA) transaction error\n");
+	if (reg & IOBPA_RDATA_CORRUPT_MASK)
+		dev_err(edac_dev->dev, "IOB PA read data RAM error\n");
+	if (reg & IOBPA_M_RDATA_CORRUPT_MASK)
+		dev_err(edac_dev->dev,
+			"Mutilple IOB PA read data RAM error\n");
+	if (reg & IOBPA_WDATA_CORRUPT_MASK)
+		dev_err(edac_dev->dev, "IOB PA write data RAM error\n");
+	if (reg & IOBPA_M_WDATA_CORRUPT_MASK)
+		dev_err(edac_dev->dev,
+			"Mutilple IOB PA write data RAM error\n");
+	if (reg & IOBPA_TRANS_CORRUPT_MASK)
+		dev_err(edac_dev->dev, "IOB PA transaction error\n");
+	if (reg & IOBPA_M_TRANS_CORRUPT_MASK)
+		dev_err(edac_dev->dev, "Mutilple IOB PA transaction error\n");
+	if (reg & IOBPA_REQIDRAM_CORRUPT_MASK)
+		dev_err(edac_dev->dev, "IOB PA transaction ID RAM error\n");
+	if (reg & IOBPA_M_REQIDRAM_CORRUPT_MASK)
+		dev_err(edac_dev->dev,
+			"Multiple IOB PA transaction ID RAM error\n");
+	writel(reg, ctx->dev_csr + IOBPATRANSERRINTSTS);
+
+chk_iob_axi0:
+	/* IOB AXI0 Error */
+	reg = readl(ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
+	if (!reg)
+		goto chk_iob_axi1;
+	err_addr_lo = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOL);
+	err_addr_hi = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOH);
+	dev_err(edac_dev->dev,
+		"%sAXI slave 0 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
+		reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
+		REQTYPE_RD(err_addr_hi) ? "read" : "write",
+		ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
+	writel(reg, ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
+
+chk_iob_axi1:
+	/* IOB AXI1 Error */
+	reg = readl(ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
+	if (!reg)
+		return;
+	err_addr_lo = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOL);
+	err_addr_hi = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOH);
+	dev_err(edac_dev->dev,
+		"%sAXI slave 1 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
+		reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
+		REQTYPE_RD(err_addr_hi) ? "read" : "write",
+		ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
+	writel(reg, ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
+}
+
+static void xgene_edac_soc_check(struct edac_device_ctl_info *edac_dev)
+{
+	struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
+	const char * const *soc_mem_err = NULL;
+	u32 pcp_hp_stat;
+	u32 pcp_lp_stat;
+	u32 reg;
+	int i;
+
+	xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
+	xgene_edac_pcp_rd(ctx->edac, PCPLPERRINTSTS, &pcp_lp_stat);
+	xgene_edac_pcp_rd(ctx->edac, MEMERRINTSTS, &reg);
+	if (!((pcp_hp_stat & (IOB_PA_ERR_MASK | IOB_BA_ERR_MASK |
+			     IOB_XGIC_ERR_MASK | IOB_RB_ERR_MASK)) ||
+	      (pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) || reg))
+		return;
+
+	if (pcp_hp_stat & IOB_XGIC_ERR_MASK)
+		xgene_edac_iob_gic_report(edac_dev);
+
+	if (pcp_hp_stat & (IOB_RB_ERR_MASK | IOB_BA_ERR_MASK))
+		xgene_edac_rb_report(edac_dev);
+
+	if (pcp_hp_stat & IOB_PA_ERR_MASK)
+		xgene_edac_pa_report(edac_dev);
+
+	if (pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) {
+		dev_info(edac_dev->dev,
+			 "CSW switch trace correctable memory parity error\n");
+		edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
+	}
+
+	if (ctx->version == 1)
+		soc_mem_err = soc_mem_err_v1;
+	if (!soc_mem_err) {
+		dev_err(edac_dev->dev, "SoC memory parity error 0x%08X\n",
+			reg);
+		edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
+		return;
+	}
+	for (i = 0; i < 31; i++) {
+		if (reg & (1 << i)) {
+			dev_err(edac_dev->dev, "%s memory parity error\n",
+				soc_mem_err[i]);
+			edac_device_handle_ue(edac_dev, 0, 0,
+					      edac_dev->ctl_name);
+		}
+	}
+}
+
+static void xgene_edac_soc_hw_init(struct edac_device_ctl_info *edac_dev,
+				   bool enable)
+{
+	struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
+
+	/* Enable SoC IP error interrupt */
+	if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
+		if (enable) {
+			xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
+					       IOB_PA_ERR_MASK |
+					       IOB_BA_ERR_MASK |
+					       IOB_XGIC_ERR_MASK |
+					       IOB_RB_ERR_MASK);
+			xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
+					       CSW_SWITCH_TRACE_ERR_MASK);
+		} else {
+			xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
+					       IOB_PA_ERR_MASK |
+					       IOB_BA_ERR_MASK |
+					       IOB_XGIC_ERR_MASK |
+					       IOB_RB_ERR_MASK);
+			xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
+					       CSW_SWITCH_TRACE_ERR_MASK);
+		}
+
+		writel(enable ? 0x0 : 0xFFFFFFFF,
+		       ctx->dev_csr + IOBAXIS0TRANSERRINTMSK);
+		writel(enable ? 0x0 : 0xFFFFFFFF,
+		       ctx->dev_csr + IOBAXIS1TRANSERRINTMSK);
+		writel(enable ? 0x0 : 0xFFFFFFFF,
+		       ctx->dev_csr + XGICTRANSERRINTMSK);
+
+		xgene_edac_pcp_setbits(ctx->edac, MEMERRINTMSK,
+				       enable ? 0x0 : 0xFFFFFFFF);
+	}
+}
+
+static int xgene_edac_soc_add(struct xgene_edac *edac, struct device_node *np,
+			      int version)
+{
+	struct edac_device_ctl_info *edac_dev;
+	struct xgene_edac_dev_ctx *ctx;
+	void __iomem *dev_csr;
+	struct resource res;
+	int edac_idx;
+	int rc = 0;
+
+	if (!devres_open_group(edac->dev, xgene_edac_soc_add, GFP_KERNEL))
+		return -ENOMEM;
+
+	rc = of_address_to_resource(np, 0, &res);
+	if (rc < 0) {
+		dev_err(edac->dev, "no SoC resource address\n");
+		goto err_release_group;
+	}
+	dev_csr = devm_ioremap_resource(edac->dev, &res);
+	if (IS_ERR(dev_csr)) {
+		dev_err(edac->dev,
+			"devm_ioremap_resource failed for soc resource address\n");
+		rc = PTR_ERR(dev_csr);
+		goto err_release_group;
+	}
+
+	edac_idx = edac_device_alloc_index();
+	edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
+					      "SOC", 1, "SOC", 1, 2, NULL, 0,
+					      edac_idx);
+	if (!edac_dev) {
+		rc = -ENOMEM;
+		goto err_release_group;
+	}
+
+	ctx = edac_dev->pvt_info;
+	ctx->dev_csr = dev_csr;
+	ctx->name = "xgene_soc_err";
+	ctx->edac_idx = edac_idx;
+	ctx->edac = edac;
+	ctx->edac_dev = edac_dev;
+	ctx->ddev = *edac->dev;
+	ctx->version = version;
+	edac_dev->dev = &ctx->ddev;
+	edac_dev->ctl_name = ctx->name;
+	edac_dev->dev_name = ctx->name;
+	edac_dev->mod_name = EDAC_MOD_STR;
+
+	if (edac_op_state == EDAC_OPSTATE_POLL)
+		edac_dev->edac_check = xgene_edac_soc_check;
+
+	rc = edac_device_add_device(edac_dev);
+	if (rc > 0) {
+		dev_err(edac->dev, "failed edac_device_add_device()\n");
+		rc = -ENOMEM;
+		goto err_ctl_free;
+	}
+
+	if (edac_op_state == EDAC_OPSTATE_INT)
+		edac_dev->op_state = OP_RUNNING_INTERRUPT;
+
+	list_add(&ctx->next, &edac->socs);
+
+	xgene_edac_soc_hw_init(edac_dev, 1);
+
+	devres_remove_group(edac->dev, xgene_edac_soc_add);
+
+	dev_info(edac->dev, "X-Gene EDAC SoC registered\n");
+
+	return 0;
+
+err_ctl_free:
+	edac_device_free_ctl_info(edac_dev);
+err_release_group:
+	devres_release_group(edac->dev, xgene_edac_soc_add);
+	return rc;
+}
+
+static int xgene_edac_soc_remove(struct xgene_edac_dev_ctx *soc)
+{
+	struct edac_device_ctl_info *edac_dev = soc->edac_dev;
+
+	xgene_edac_soc_hw_init(edac_dev, 0);
+	edac_device_del_device(soc->edac->dev);
+	edac_device_free_ctl_info(edac_dev);
+	return 0;
+}
+
 static irqreturn_t xgene_edac_isr(int irq, void *dev_id)
 {
 	struct xgene_edac *ctx = dev_id;
 	struct xgene_edac_pmd_ctx *pmd;
+	struct xgene_edac_dev_ctx *node;
 	unsigned int pcp_hp_stat;
 	unsigned int pcp_lp_stat;
 
@@ -1030,9 +1809,8 @@ static irqreturn_t xgene_edac_isr(int irq, void *dev_id)
 	    (MCU_CORR_ERR_MASK & pcp_lp_stat)) {
 		struct xgene_edac_mc_ctx *mcu;
 
-		list_for_each_entry(mcu, &ctx->mcus, next) {
+		list_for_each_entry(mcu, &ctx->mcus, next)
 			xgene_edac_mc_check(mcu->mci);
-		}
 	}
 
 	list_for_each_entry(pmd, &ctx->pmds, next) {
@@ -1040,6 +1818,12 @@ static irqreturn_t xgene_edac_isr(int irq, void *dev_id)
 			xgene_edac_pmd_check(pmd->edac_dev);
 	}
 
+	list_for_each_entry(node, &ctx->l3s, next)
+		xgene_edac_l3_check(node->edac_dev);
+
+	list_for_each_entry(node, &ctx->socs, next)
+		xgene_edac_soc_check(node->edac_dev);
+
 	return IRQ_HANDLED;
 }
 
@@ -1058,6 +1842,8 @@ static int xgene_edac_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, edac);
 	INIT_LIST_HEAD(&edac->mcus);
 	INIT_LIST_HEAD(&edac->pmds);
+	INIT_LIST_HEAD(&edac->l3s);
+	INIT_LIST_HEAD(&edac->socs);
 	spin_lock_init(&edac->lock);
 	mutex_init(&edac->mc_lock);
 
@@ -1122,6 +1908,8 @@ static int xgene_edac_probe(struct platform_device *pdev)
 		}
 	}
 
+	edac->dfs = edac_get_debugfs();
+
 	for_each_child_of_node(pdev->dev.of_node, child) {
 		if (!of_device_is_available(child))
 			continue;
@@ -1131,6 +1919,14 @@ static int xgene_edac_probe(struct platform_device *pdev)
 			xgene_edac_pmd_add(edac, child, 1);
 		if (of_device_is_compatible(child, "apm,xgene-edac-pmd-v2"))
 			xgene_edac_pmd_add(edac, child, 2);
+		if (of_device_is_compatible(child, "apm,xgene-edac-l3"))
+			xgene_edac_l3_add(edac, child, 1);
+		if (of_device_is_compatible(child, "apm,xgene-edac-l3-v2"))
+			xgene_edac_l3_add(edac, child, 2);
+		if (of_device_is_compatible(child, "apm,xgene-edac-soc"))
+			xgene_edac_soc_add(edac, child, 0);
+		if (of_device_is_compatible(child, "apm,xgene-edac-soc-v1"))
+			xgene_edac_soc_add(edac, child, 1);
 	}
 
 	return 0;
@@ -1146,14 +1942,21 @@ static int xgene_edac_remove(struct platform_device *pdev)
 	struct xgene_edac_mc_ctx *temp_mcu;
 	struct xgene_edac_pmd_ctx *pmd;
 	struct xgene_edac_pmd_ctx *temp_pmd;
+	struct xgene_edac_dev_ctx *node;
+	struct xgene_edac_dev_ctx *temp_node;
 
-	list_for_each_entry_safe(mcu, temp_mcu, &edac->mcus, next) {
+	list_for_each_entry_safe(mcu, temp_mcu, &edac->mcus, next)
 		xgene_edac_mc_remove(mcu);
-	}
 
-	list_for_each_entry_safe(pmd, temp_pmd, &edac->pmds, next) {
+	list_for_each_entry_safe(pmd, temp_pmd, &edac->pmds, next)
 		xgene_edac_pmd_remove(pmd);
-	}
+
+	list_for_each_entry_safe(node, temp_node, &edac->l3s, next)
+		xgene_edac_l3_remove(node);
+
+	list_for_each_entry_safe(node, temp_node, &edac->socs, next)
+		xgene_edac_soc_remove(node);
+
 	return 0;
 }
 
-- 
1.7.1

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