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EDAC, altera: Add Arria10 OCRAM ECC support

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Add Arria10 On-Chip RAM ECC handling.

Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
Cc: devicetree@vger.kernel.org
Cc: dinguyen@opensource.altera.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux@arm.linux.org.uk
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1459992174-8015-1-git-send-email-tthayer@opensource.altera.com
Signed-off-by: Borislav Petkov <bp@suse.de>
This commit is contained in:
Thor Thayer 2016-04-06 20:22:54 -05:00 committed by Borislav Petkov
parent abd56b3c84
commit c7b4be8db8
2 changed files with 113 additions and 0 deletions
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78
drivers/edac/altera_edac.c
View file

@ -550,6 +550,7 @@ 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_ocramecc_data;
const struct edac_device_prv_data a10_l2ecc_data;
static irqreturn_t altr_edac_device_handler(int irq, void *dev_id)
@ -674,6 +675,16 @@ static const struct file_operations altr_edac_device_inject_fops = {
.llseek = generic_file_llseek,
};
static ssize_t altr_edac_a10_device_trig(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos);
static const struct file_operations altr_edac_a10_device_inject_fops = {
.open = simple_open,
.write = altr_edac_a10_device_trig,
.llseek = generic_file_llseek,
};
static void altr_create_edacdev_dbgfs(struct edac_device_ctl_info *edac_dci,
const struct edac_device_prv_data *priv)
{
@ -701,6 +712,8 @@ static const struct of_device_id altr_edac_device_of_match[] = {
#ifdef CONFIG_EDAC_ALTERA_OCRAM
{ .compatible = "altr,socfpga-ocram-ecc",
.data = (void *)&ocramecc_data },
{ .compatible = "altr,socfpga-a10-ocram-ecc",
.data = (void *)&a10_ocramecc_data },
#endif
{},
};
@ -889,6 +902,24 @@ const struct edac_device_prv_data ocramecc_data = {
.inject_fops = &altr_edac_device_inject_fops,
};
static irqreturn_t altr_edac_a10_ecc_irq(struct altr_edac_device_dev *dci,
bool sberr);
const struct edac_device_prv_data a10_ocramecc_data = {
.setup = altr_check_ecc_deps,
.ce_clear_mask = ALTR_A10_ECC_SERRPENA,
.ue_clear_mask = ALTR_A10_ECC_DERRPENA,
.irq_status_mask = A10_SYSMGR_ECC_INTSTAT_OCRAM,
.dbgfs_name = "altr_ocram_trigger",
.ecc_enable_mask = ALTR_A10_OCRAM_ECC_EN_CTL,
.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
.ce_set_mask = ALTR_A10_ECC_TSERRA,
.ue_set_mask = ALTR_A10_ECC_TDERRA,
.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
.ecc_irq_handler = altr_edac_a10_ecc_irq,
.inject_fops = &altr_edac_a10_device_inject_fops,
};
#endif /* CONFIG_EDAC_ALTERA_OCRAM */
/********************* L2 Cache EDAC Device Functions ********************/
@ -1007,6 +1038,50 @@ const struct edac_device_prv_data a10_l2ecc_data = {
* Based on xgene_edac.c peripheral code.
*/
static ssize_t altr_edac_a10_device_trig(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct edac_device_ctl_info *edac_dci = file->private_data;
struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
const struct edac_device_prv_data *priv = drvdata->data;
void __iomem *set_addr = (drvdata->base + priv->set_err_ofst);
unsigned long flags;
u8 trig_type;
if (!user_buf || get_user(trig_type, user_buf))
return -EFAULT;
local_irq_save(flags);
if (trig_type == ALTR_UE_TRIGGER_CHAR)
writel(priv->ue_set_mask, set_addr);
else
writel(priv->ce_set_mask, set_addr);
/* Ensure the interrupt test bits are set */
wmb();
local_irq_restore(flags);
return count;
}
static irqreturn_t altr_edac_a10_ecc_irq(struct altr_edac_device_dev *dci,
bool sberr)
{
void __iomem *base = dci->base;
if (sberr) {
writel(ALTR_A10_ECC_SERRPENA,
base + ALTR_A10_ECC_INTSTAT_OFST);
edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
} else {
writel(ALTR_A10_ECC_DERRPENA,
base + ALTR_A10_ECC_INTSTAT_OFST);
edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
}
return IRQ_HANDLED;
}
static irqreturn_t altr_edac_a10_irq_handler(int irq, void *dev_id)
{
irqreturn_t rc = IRQ_NONE;
@ -1171,6 +1246,9 @@ static int altr_edac_a10_probe(struct platform_device *pdev)
continue;
if (of_device_is_compatible(child, "altr,socfpga-a10-l2-ecc"))
altr_edac_a10_device_add(edac, child);
else if (of_device_is_compatible(child,
"altr,socfpga-a10-ocram-ecc"))
altr_edac_a10_device_add(edac, child);
}
return 0;

35
drivers/edac/altera_edac.h
View file

@ -220,9 +220,41 @@ struct altr_sdram_mc_data {
#define ALTR_L2_ECC_INJD BIT(2)
/* Arria10 General ECC Block Module Defines */
#define ALTR_A10_ECC_CTRL_OFST 0x08
#define ALTR_A10_ECC_EN BIT(0)
#define ALTR_A10_ECC_INITA BIT(16)
#define ALTR_A10_ECC_INITB BIT(24)
#define ALTR_A10_ECC_INITSTAT_OFST 0x0C
#define ALTR_A10_ECC_INITCOMPLETEA BIT(0)
#define ALTR_A10_ECC_INITCOMPLETEB BIT(8)
#define ALTR_A10_ECC_ERRINTEN_OFST 0x10
#define ALTR_A10_ECC_SERRINTEN BIT(0)
#define ALTR_A10_ECC_INTSTAT_OFST 0x20
#define ALTR_A10_ECC_SERRPENA BIT(0)
#define ALTR_A10_ECC_DERRPENA BIT(8)
#define ALTR_A10_ECC_ERRPENA_MASK (ALTR_A10_ECC_SERRPENA | \
ALTR_A10_ECC_DERRPENA)
#define ALTR_A10_ECC_SERRPENB BIT(16)
#define ALTR_A10_ECC_DERRPENB BIT(24)
#define ALTR_A10_ECC_ERRPENB_MASK (ALTR_A10_ECC_SERRPENB | \
ALTR_A10_ECC_DERRPENB)
#define ALTR_A10_ECC_INTTEST_OFST 0x24
#define ALTR_A10_ECC_TSERRA BIT(0)
#define ALTR_A10_ECC_TDERRA BIT(8)
/* ECC Manager Defines */
#define A10_SYSMGR_ECC_INTMASK_SET_OFST 0x94
#define A10_SYSMGR_ECC_INTMASK_CLR_OFST 0x98
#define A10_SYSMGR_ECC_INTMASK_OCRAM BIT(1)
#define A10_SYSMGR_ECC_INTSTAT_SERR_OFST 0x9C
#define A10_SYSMGR_ECC_INTSTAT_DERR_OFST 0xA0
#define A10_SYSMGR_ECC_INTSTAT_L2 BIT(0)
#define A10_SYSMGR_ECC_INTSTAT_OCRAM BIT(1)
#define A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST 0xA8
#define A10_SYSGMR_MPU_CLEAR_L2_ECC_SB BIT(15)
@ -245,6 +277,9 @@ struct altr_sdram_mc_data {
#define ALTR_A10_L2_ECC_CE_INJ_MASK 0x00000101
#define ALTR_A10_L2_ECC_UE_INJ_MASK 0x00010101
/* Arria 10 OCRAM ECC Management Group Defines */
#define ALTR_A10_OCRAM_ECC_EN_CTL (BIT(1) | BIT(0))
struct altr_edac_device_dev;
struct edac_device_prv_data {