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Message-ID: <1457379787-8327-10-git-send-email-tthayer@opensource.altera.com>
Date: Mon, 7 Mar 2016 13:43:05 -0600
From: <tthayer@...nsource.altera.com>
To: <bp@...en8.de>, <dougthompson@...ssion.com>,
<m.chehab@...sung.com>, <robh+dt@...nel.org>, <pawel.moll@....com>,
<mark.rutland@....com>, <ijc+devicetree@...lion.org.uk>,
<galak@...eaurora.org>, <linux@....linux.org.uk>,
<dinguyen@...nsource.altera.com>, <grant.likely@...aro.org>
CC: <devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>,
<linux-edac@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <tthayer.linux@...il.com>,
<tthayer@...nsource.altera.com>
Subject: [PATCHv2 09/11] EDAC, altera: Addition of Arria10 L2 Cache ECC
From: Thor Thayer <tthayer@...nsource.altera.com>
Addition of the Arria10 L2 Cache ECC handling. Addition
of private data structure for Arria10 L2 cache ECC and
the initialization function for it.
Signed-off-by: Thor Thayer <tthayer@...nsource.altera.com>
---
v2: Split large patch into smaller patches. Addition of
Arria10 L2 cache dependency check and private data.
---
drivers/edac/altera_edac.c | 57 ++++++++++++++++++++++++++++++++++++++++++++
drivers/edac/altera_edac.h | 21 +++++++++++++++-
2 files changed, 77 insertions(+), 1 deletion(-)
diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index 11b7291..8afdf8b 100644
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c
@@ -549,6 +549,7 @@ module_platform_driver(altr_edac_driver);
const struct edac_device_prv_data ocramecc_data;
const struct edac_device_prv_data l2ecc_data;
+const struct edac_device_prv_data a10_l2ecc_data;
static irqreturn_t altr_edac_device_handler(int irq, void *dev_id)
{
@@ -687,6 +688,8 @@ static void altr_create_edacdev_dbgfs(struct edac_device_ctl_info *edac_dci,
static const struct of_device_id altr_edac_device_of_match[] = {
#ifdef CONFIG_EDAC_ALTERA_L2C
{ .compatible = "altr,socfpga-l2-ecc", .data = (void *)&l2ecc_data },
+ { .compatible = "altr,socfpga-a10-l2-ecc",
+ .data = (void *)&a10_l2ecc_data },
#endif
#ifdef CONFIG_EDAC_ALTERA_OCRAM
{ .compatible = "altr,socfpga-ocram-ecc",
@@ -970,6 +973,40 @@ static int altr_l2_check_deps(struct platform_device *pdev,
return -ENODEV;
}
+static int altr_a10_l2_check_deps(struct platform_device *pdev,
+ struct altr_edac_device_dev *drvdata)
+{
+ void __iomem *status_base, *base = drvdata->base;
+ const struct edac_device_prv_data *prv = drvdata->data;
+
+ if ((readl(base + prv->ecc_en_ofst) & prv->ecc_enable_mask) !=
+ prv->ecc_enable_mask) {
+ edac_printk(KERN_ERR, EDAC_DEVICE,
+ "L2: No ECC present, or ECC disabled\n");
+ return -ENODEV;
+ }
+
+ /* A10 L2 cache status registers are not contiguous with base */
+ if (!devm_request_mem_region(&pdev->dev, ALTR_A10_L2_ECC_STATUS,
+ 2 * sizeof(u32), dev_name(&pdev->dev))) {
+ edac_printk(KERN_ERR, EDAC_DEVICE,
+ "Unable to request mem region\n");
+ return -EBUSY;
+ }
+
+ status_base = devm_ioremap(&pdev->dev, ALTR_A10_L2_ECC_STATUS,
+ 2 * sizeof(u32));
+ if (!status_base) {
+ edac_printk(KERN_ERR, EDAC_DEVICE,
+ "Unable to ioremap L2 status\n");
+ return -ENOMEM;
+ }
+
+ drvdata->status = status_base;
+
+ return 0;
+}
+
const struct edac_device_prv_data l2ecc_data = {
.setup = altr_l2_check_deps,
.ce_clear_mask = 0,
@@ -991,6 +1028,26 @@ const struct edac_device_prv_data l2ecc_data = {
.irq_flags = 0,
};
+const struct edac_device_prv_data a10_l2ecc_data = {
+ .setup = altr_a10_l2_check_deps,
+ .ce_clear_mask = ALTR_A10_L2_ECC_SERR_CLR,
+ .ue_clear_mask = ALTR_A10_L2_ECC_MERR_CLR,
+ .clear_err_ofst = ALTR_A10_L2_ECC_CLR_OFST,
+ .ce_status_mask = ALTR_A10_L2_ECC_SERR_PEND,
+ .ue_status_mask = ALTR_A10_L2_ECC_MERR_PEND,
+ .err_status_ofst = ALTR_A10_L2_ECC_STAT_OFST,
+ .dbgfs_name = "altr_l2_trigger",
+ .alloc_mem = l2_alloc_mem,
+ .free_mem = l2_free_mem,
+ .ecc_enable_mask = ALTR_A10_L2_ECC_EN_CTL,
+ .ecc_en_ofst = ALTR_A10_L2_ECC_CTL_OFST,
+ .ce_set_mask = ALTR_A10_L2_ECC_CE_INJ_MASK,
+ .ue_set_mask = ALTR_A10_L2_ECC_UE_INJ_MASK,
+ .set_err_ofst = ALTR_A10_L2_ECC_INJ_OFST,
+ .trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE,
+ .irq_flags = IRQF_SHARED,
+};
+
#endif /* CONFIG_EDAC_ALTERA_L2C */
MODULE_LICENSE("GPL v2");
diff --git a/drivers/edac/altera_edac.h b/drivers/edac/altera_edac.h
index 43e0dae..a9177c8 100644
--- a/drivers/edac/altera_edac.h
+++ b/drivers/edac/altera_edac.h
@@ -196,12 +196,13 @@ struct altr_sdram_mc_data {
};
/************************** EDAC Device Defines **************************/
-
+/***** General Device Trigger Defines *****/
#define ALTR_UE_TRIGGER_CHAR 'U' /* Trigger for UE */
#define ALTR_TRIGGER_READ_WRD_CNT 32 /* Line size x 4 */
#define ALTR_TRIG_OCRAM_BYTE_SIZE 128 /* Line size x 4 */
#define ALTR_TRIG_L2C_BYTE_SIZE 4096 /* Full Page */
+/******* Cyclone5 and Arria5 Defines *******/
/* OCRAM ECC Management Group Defines */
#define ALTR_MAN_GRP_OCRAM_ECC_OFFSET 0x04
#define ALTR_OCR_ECC_REG_OFFSET 0x00
@@ -218,6 +219,24 @@ struct altr_sdram_mc_data {
#define ALTR_L2_ECC_INJS BIT(1)
#define ALTR_L2_ECC_INJD BIT(2)
+/************* Arria10 Defines *************/
+/* Arria 10 L2 ECC Management Group Defines */
+#define ALTR_A10_L2_ECC_CTL_OFST 0x0
+#define ALTR_A10_L2_ECC_EN_CTL BIT(0)
+
+#define ALTR_A10_L2_ECC_STATUS 0xFFD060A4
+#define ALTR_A10_L2_ECC_STAT_OFST 0x0
+#define ALTR_A10_L2_ECC_SERR_PEND BIT(15)
+#define ALTR_A10_L2_ECC_MERR_PEND BIT(31)
+
+#define ALTR_A10_L2_ECC_CLR_OFST 0x4
+#define ALTR_A10_L2_ECC_SERR_CLR BIT(15)
+#define ALTR_A10_L2_ECC_MERR_CLR BIT(31)
+
+#define ALTR_A10_L2_ECC_INJ_OFST ALTR_A10_L2_ECC_CTL_OFST
+#define ALTR_A10_L2_ECC_CE_INJ_MASK 0x00000101
+#define ALTR_A10_L2_ECC_UE_INJ_MASK 0x00010101
+
struct altr_edac_device_dev;
struct edac_device_prv_data {
--
1.7.9.5
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