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EDAC, altera: Make OCRAM ECC dependency check generic 

In preparation for the Arria10 peripheral ECCs, move the OCRAM ECC
dependency check into the general ECC area since this same function can
be used by other memories.

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/1459450087-24792-4-git-send-email-tthayer@opensource.altera.com
Signed-off-by: Borislav Petkov <bp@suse.de>
hifive-unleashed-5.1
Thor Thayer 2016-03-31 13:48:03 -05:00 committed by Borislav Petkov
parent 943ad91798
commit aa1f06dcc0
1 changed files with 21 additions and 22 deletions
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43
drivers/edac/altera_edac.c
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@ -648,6 +648,26 @@ static ssize_t altr_edac_device_trig(struct file *file,
return count;
}
/*
* Test for memory's ECC dependencies upon entry because platform specific
* startup should have initialized the memory and enabled the ECC.
* Can't turn on ECC here because accessing un-initialized memory will
* cause CE/UE errors possibly causing an ABORT.
*/
static int altr_check_ecc_deps(struct altr_edac_device_dev *device)
{
void __iomem *base = device->base;
const struct edac_device_prv_data *prv = device->data;
if (readl(base + prv->ecc_en_ofst) & prv->ecc_enable_mask)
return 0;
edac_printk(KERN_ERR, EDAC_DEVICE,
"%s: No ECC present or ECC disabled.\n",
device->edac_dev_name);
return -ENODEV;
}
static const struct file_operations altr_edac_device_inject_fops = {
.open = simple_open,
.write = altr_edac_device_trig,
@ -853,29 +873,8 @@ static void ocram_free_mem(void *p, size_t size, void *other)
gen_pool_free((struct gen_pool *)other, (u32)p, size);
}
/*
* altr_ocram_check_deps()
* Test for OCRAM cache ECC dependencies upon entry because
* platform specific startup should have initialized the
* On-Chip RAM memory and enabled the ECC.
* Can't turn on ECC here because accessing un-initialized
* memory will cause CE/UE errors possibly causing an ABORT.
*/
static int altr_ocram_check_deps(struct altr_edac_device_dev *device)
{
void __iomem *base = device->base;
const struct edac_device_prv_data *prv = device->data;
if (readl(base + prv->ecc_en_ofst) & prv->ecc_enable_mask)
return 0;
edac_printk(KERN_ERR, EDAC_DEVICE,
"OCRAM: No ECC present or ECC disabled.\n");
return -ENODEV;
}
const struct edac_device_prv_data ocramecc_data = {
.setup = altr_ocram_check_deps,
.setup = altr_check_ecc_deps,
.ce_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_SERR),
.ue_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_DERR),
.dbgfs_name = "altr_ocram_trigger",