EDAC, altera: Add ECC Manager IRQ controller support
To better support child devices, the ECC manager needs to be implemented as an IRQ controller. Signed-off-by: Thor Thayer <tthayer@opensource.altera.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/1465331757-10227-1-git-send-email-tthayer@opensource.altera.com Signed-off-by: Borislav Petkov <bp@suse.de>
This commit is contained in:
Thor Thayer
Borislav Petkov
parent
47d78000eb
commit
13ab8448d2
@ -22,9 +22,11 @@
|
||||
#include <linux/edac.h>
|
||||
#include <linux/genalloc.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/irqchip/chained_irq.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mfd/syscon.h>
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/of_irq.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/regmap.h>
|
||||
@ -882,22 +884,29 @@ static void ocram_free_mem(void *p, size_t size, void *other)
|
||||
gen_pool_free((struct gen_pool *)other, (u32)p, size);
|
||||
}
|
||||
|
||||
static irqreturn_t altr_edac_a10_ecc_irq(struct altr_edac_device_dev *dci,
|
||||
bool sberr)
|
||||
static irqreturn_t altr_edac_a10_ecc_irq(int irq, void *dev_id)
|
||||
{
|
||||
struct altr_edac_device_dev *dci = dev_id;
|
||||
void __iomem *base = dci->base;
|
||||
|
||||
if (sberr) {
|
||||
if (irq == dci->sb_irq) {
|
||||
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 {
|
||||
|
||||
return IRQ_HANDLED;
|
||||
} else if (irq == dci->db_irq) {
|
||||
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;
|
||||
}
|
||||
return IRQ_HANDLED;
|
||||
|
||||
WARN_ON(1);
|
||||
|
||||
return IRQ_NONE;
|
||||
}
|
||||
|
||||
const struct edac_device_prv_data ocramecc_data = {
|
||||
@ -988,22 +997,30 @@ static int altr_l2_check_deps(struct altr_edac_device_dev *device)
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
static irqreturn_t altr_edac_a10_l2_irq(struct altr_edac_device_dev *dci,
|
||||
bool sberr)
|
||||
static irqreturn_t altr_edac_a10_l2_irq(int irq, void *dev_id)
|
||||
{
|
||||
if (sberr) {
|
||||
struct altr_edac_device_dev *dci = dev_id;
|
||||
|
||||
if (irq == dci->sb_irq) {
|
||||
regmap_write(dci->edac->ecc_mgr_map,
|
||||
A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
|
||||
A10_SYSGMR_MPU_CLEAR_L2_ECC_SB);
|
||||
edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
|
||||
} else {
|
||||
|
||||
return IRQ_HANDLED;
|
||||
} else if (irq == dci->db_irq) {
|
||||
regmap_write(dci->edac->ecc_mgr_map,
|
||||
A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
|
||||
A10_SYSGMR_MPU_CLEAR_L2_ECC_MB);
|
||||
edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
|
||||
panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
return IRQ_HANDLED;
|
||||
|
||||
WARN_ON(1);
|
||||
|
||||
return IRQ_NONE;
|
||||
}
|
||||
|
||||
const struct edac_device_prv_data l2ecc_data = {
|
||||
@ -1075,28 +1092,28 @@ static ssize_t altr_edac_a10_device_trig(struct file *file,
|
||||
return count;
|
||||
}
|
||||
|
||||
static irqreturn_t altr_edac_a10_irq_handler(int irq, void *dev_id)
|
||||
static void altr_edac_a10_irq_handler(struct irq_desc *desc)
|
||||
{
|
||||
irqreturn_t rc = IRQ_NONE;
|
||||
struct altr_arria10_edac *edac = dev_id;
|
||||
struct altr_edac_device_dev *dci;
|
||||
int irq_status;
|
||||
bool sberr = (irq == edac->sb_irq) ? 1 : 0;
|
||||
int sm_offset = sberr ? A10_SYSMGR_ECC_INTSTAT_SERR_OFST :
|
||||
A10_SYSMGR_ECC_INTSTAT_DERR_OFST;
|
||||
int dberr, bit, sm_offset, irq_status;
|
||||
struct altr_arria10_edac *edac = irq_desc_get_handler_data(desc);
|
||||
struct irq_chip *chip = irq_desc_get_chip(desc);
|
||||
int irq = irq_desc_get_irq(desc);
|
||||
|
||||
dberr = (irq == edac->db_irq) ? 1 : 0;
|
||||
sm_offset = dberr ? A10_SYSMGR_ECC_INTSTAT_DERR_OFST :
|
||||
A10_SYSMGR_ECC_INTSTAT_SERR_OFST;
|
||||
|
||||
chained_irq_enter(chip, desc);
|
||||
|
||||
regmap_read(edac->ecc_mgr_map, sm_offset, &irq_status);
|
||||
|
||||
if ((irq != edac->sb_irq) && (irq != edac->db_irq)) {
|
||||
WARN_ON(1);
|
||||
} else {
|
||||
list_for_each_entry(dci, &edac->a10_ecc_devices, next) {
|
||||
if (irq_status & dci->data->irq_status_mask)
|
||||
rc = dci->data->ecc_irq_handler(dci, sberr);
|
||||
}
|
||||
for_each_set_bit(bit, (unsigned long *)&irq_status, 32) {
|
||||
irq = irq_linear_revmap(edac->domain, dberr * 32 + bit);
|
||||
if (irq)
|
||||
generic_handle_irq(irq);
|
||||
}
|
||||
|
||||
return rc;
|
||||
chained_irq_exit(chip, desc);
|
||||
}
|
||||
|
||||
static int altr_edac_a10_device_add(struct altr_arria10_edac *edac,
|
||||
@ -1168,6 +1185,34 @@ static int altr_edac_a10_device_add(struct altr_arria10_edac *edac,
|
||||
goto err_release_group1;
|
||||
}
|
||||
|
||||
altdev->sb_irq = irq_of_parse_and_map(np, 0);
|
||||
if (!altdev->sb_irq) {
|
||||
edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating SBIRQ\n");
|
||||
rc = -ENODEV;
|
||||
goto err_release_group1;
|
||||
}
|
||||
rc = devm_request_irq(edac->dev, altdev->sb_irq,
|
||||
prv->ecc_irq_handler,
|
||||
IRQF_SHARED, ecc_name, altdev);
|
||||
if (rc) {
|
||||
edac_printk(KERN_ERR, EDAC_DEVICE, "No DBERR IRQ resource\n");
|
||||
goto err_release_group1;
|
||||
}
|
||||
|
||||
altdev->db_irq = irq_of_parse_and_map(np, 1);
|
||||
if (!altdev->db_irq) {
|
||||
edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating DBIRQ\n");
|
||||
rc = -ENODEV;
|
||||
goto err_release_group1;
|
||||
}
|
||||
rc = devm_request_irq(edac->dev, altdev->db_irq,
|
||||
prv->ecc_irq_handler,
|
||||
IRQF_SHARED, ecc_name, altdev);
|
||||
if (rc) {
|
||||
edac_printk(KERN_ERR, EDAC_DEVICE, "No DBERR IRQ resource\n");
|
||||
goto err_release_group1;
|
||||
}
|
||||
|
||||
rc = edac_device_add_device(dci);
|
||||
if (rc) {
|
||||
dev_err(edac->dev, "edac_device_add_device failed\n");
|
||||
@ -1186,7 +1231,6 @@ static int altr_edac_a10_device_add(struct altr_arria10_edac *edac,
|
||||
err_release_group1:
|
||||
edac_device_free_ctl_info(dci);
|
||||
err_release_group:
|
||||
edac_printk(KERN_ALERT, EDAC_DEVICE, "%s: %d\n", __func__, __LINE__);
|
||||
devres_release_group(edac->dev, NULL);
|
||||
edac_printk(KERN_ERR, EDAC_DEVICE,
|
||||
"%s:Error setting up EDAC device: %d\n", ecc_name, rc);
|
||||
@ -1194,11 +1238,43 @@ err_release_group:
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void a10_eccmgr_irq_mask(struct irq_data *d)
|
||||
{
|
||||
struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d);
|
||||
|
||||
regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST,
|
||||
BIT(d->hwirq));
|
||||
}
|
||||
|
||||
static void a10_eccmgr_irq_unmask(struct irq_data *d)
|
||||
{
|
||||
struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d);
|
||||
|
||||
regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST,
|
||||
BIT(d->hwirq));
|
||||
}
|
||||
|
||||
static int a10_eccmgr_irqdomain_map(struct irq_domain *d, unsigned int irq,
|
||||
irq_hw_number_t hwirq)
|
||||
{
|
||||
struct altr_arria10_edac *edac = d->host_data;
|
||||
|
||||
irq_set_chip_and_handler(irq, &edac->irq_chip, handle_simple_irq);
|
||||
irq_set_chip_data(irq, edac);
|
||||
irq_set_noprobe(irq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct irq_domain_ops a10_eccmgr_ic_ops = {
|
||||
.map = a10_eccmgr_irqdomain_map,
|
||||
.xlate = irq_domain_xlate_twocell,
|
||||
};
|
||||
|
||||
static int altr_edac_a10_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct altr_arria10_edac *edac;
|
||||
struct device_node *child;
|
||||
int rc;
|
||||
|
||||
edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL);
|
||||
if (!edac)
|
||||
@ -1216,24 +1292,35 @@ static int altr_edac_a10_probe(struct platform_device *pdev)
|
||||
return PTR_ERR(edac->ecc_mgr_map);
|
||||
}
|
||||
|
||||
edac->sb_irq = platform_get_irq(pdev, 0);
|
||||
rc = devm_request_irq(&pdev->dev, edac->sb_irq,
|
||||
altr_edac_a10_irq_handler,
|
||||
IRQF_SHARED, dev_name(&pdev->dev), edac);
|
||||
if (rc) {
|
||||
edac_printk(KERN_ERR, EDAC_DEVICE, "No SBERR IRQ resource\n");
|
||||
return rc;
|
||||
edac->irq_chip.name = pdev->dev.of_node->name;
|
||||
edac->irq_chip.irq_mask = a10_eccmgr_irq_mask;
|
||||
edac->irq_chip.irq_unmask = a10_eccmgr_irq_unmask;
|
||||
edac->domain = irq_domain_add_linear(pdev->dev.of_node, 64,
|
||||
&a10_eccmgr_ic_ops, edac);
|
||||
if (!edac->domain) {
|
||||
dev_err(&pdev->dev, "Error adding IRQ domain\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
edac->db_irq = platform_get_irq(pdev, 1);
|
||||
rc = devm_request_irq(&pdev->dev, edac->db_irq,
|
||||
altr_edac_a10_irq_handler,
|
||||
IRQF_SHARED, dev_name(&pdev->dev), edac);
|
||||
if (rc) {
|
||||
edac_printk(KERN_ERR, EDAC_DEVICE, "No DBERR IRQ resource\n");
|
||||
return rc;
|
||||
edac->sb_irq = platform_get_irq(pdev, 0);
|
||||
if (edac->sb_irq < 0) {
|
||||
dev_err(&pdev->dev, "No SBERR IRQ resource\n");
|
||||
return edac->sb_irq;
|
||||
}
|
||||
|
||||
irq_set_chained_handler_and_data(edac->sb_irq,
|
||||
altr_edac_a10_irq_handler,
|
||||
edac);
|
||||
|
||||
edac->db_irq = platform_get_irq(pdev, 1);
|
||||
if (edac->db_irq < 0) {
|
||||
dev_err(&pdev->dev, "No DBERR IRQ resource\n");
|
||||
return edac->db_irq;
|
||||
}
|
||||
irq_set_chained_handler_and_data(edac->db_irq,
|
||||
altr_edac_a10_irq_handler,
|
||||
edac);
|
||||
|
||||
for_each_child_of_node(pdev->dev.of_node, child) {
|
||||
if (!of_device_is_available(child))
|
||||
continue;
|
||||
|
||||
@ -295,8 +295,7 @@ struct edac_device_prv_data {
|
||||
int ce_set_mask;
|
||||
int ue_set_mask;
|
||||
int set_err_ofst;
|
||||
irqreturn_t (*ecc_irq_handler)(struct altr_edac_device_dev *dci,
|
||||
bool sb);
|
||||
irqreturn_t (*ecc_irq_handler)(int irq, void *dev_id);
|
||||
int trig_alloc_sz;
|
||||
const struct file_operations *inject_fops;
|
||||
};
|
||||
@ -320,6 +319,8 @@ struct altr_arria10_edac {
|
||||
struct regmap *ecc_mgr_map;
|
||||
int sb_irq;
|
||||
int db_irq;
|
||||
struct irq_domain *domain;
|
||||
struct irq_chip irq_chip;
|
||||
struct list_head a10_ecc_devices;
|
||||
};
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user