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authorThor Thayer <thor.thayer@linux.intel.com>2018-09-25 13:49:01 (GMT)
committerBorislav Petkov <bp@suse.de>2018-09-25 19:22:20 (GMT)
commit064acbd4f4ab509dd3f31e1a2d1e04a43d5b1009 (patch)
tree910c83819a536732a25246e2bdea4c3f76319d82 /drivers/edac
parent08f08bfb7b4cc7b7037c8818acb1b6abccf2bd0e (diff)
EDAC, altera: Add Stratix10 peripheral support
Add a new peripheral ECC error injection algorithm for Stratix10 and some Arria10 peripherals. Inject a single bit error and upon readback, it will be corrected and the SBE IRQ handler will be called. Add regmap selection for Stratix10 or Arria10 peripheral device memory initialization. Add checks for both Arria10 and Stratix10 to the peripheral ECC setup. Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: dinguyen@kernel.org Cc: robh+dt@kernel.org Cc: mark.rutland@arm.com Cc: mchehab@kernel.org Cc: devicetree@vger.kernel.org Cc: linux-edac@vger.kernel.org Link: https://lkml.kernel.org/r/1537883342-30180-6-git-send-email-thor.thayer@linux.intel.com
Diffstat (limited to 'drivers/edac')
-rw-r--r--drivers/edac/altera_edac.c129
-rw-r--r--drivers/edac/altera_edac.h25
2 files changed, 143 insertions, 11 deletions
diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index 48b5806..523ae84 100644
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c
@@ -713,6 +713,16 @@ static const struct file_operations altr_edac_a10_device_inject_fops = {
.llseek = generic_file_llseek,
};
+static ssize_t altr_edac_a10_device_trig2(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos);
+
+static const struct file_operations altr_edac_a10_device_inject2_fops = {
+ .open = simple_open,
+ .write = altr_edac_a10_device_trig2,
+ .llseek = generic_file_llseek,
+};
+
static void altr_create_edacdev_dbgfs(struct edac_device_ctl_info *edac_dci,
const struct edac_device_prv_data *priv)
{
@@ -994,6 +1004,16 @@ static int __maybe_unused altr_init_memory_port(void __iomem *ioaddr, int port)
return ret;
}
+static int socfpga_is_a10(void)
+{
+ return of_machine_is_compatible("altr,socfpga-arria10");
+}
+
+static int socfpga_is_s10(void)
+{
+ return of_machine_is_compatible("altr,socfpga-stratix10");
+}
+
static __init int __maybe_unused
altr_init_a10_ecc_block(struct device_node *np, u32 irq_mask,
u32 ecc_ctrl_en_mask, bool dual_port)
@@ -1008,8 +1028,32 @@ altr_init_a10_ecc_block(struct device_node *np, u32 irq_mask,
/* Get the ECC Manager - parent of the device EDACs */
np_eccmgr = of_get_parent(np);
- ecc_mgr_map = syscon_regmap_lookup_by_phandle(np_eccmgr,
- "altr,sysmgr-syscon");
+
+ if (socfpga_is_a10()) {
+ ecc_mgr_map = syscon_regmap_lookup_by_phandle(np_eccmgr,
+ "altr,sysmgr-syscon");
+ } else {
+ struct device_node *sysmgr_np;
+ struct resource res;
+ void __iomem *base;
+
+ sysmgr_np = of_parse_phandle(np_eccmgr,
+ "altr,sysmgr-syscon", 0);
+ if (!sysmgr_np) {
+ edac_printk(KERN_ERR, EDAC_DEVICE,
+ "Unable to find altr,sysmgr-syscon\n");
+ return -ENODEV;
+ }
+
+ if (of_address_to_resource(sysmgr_np, 0, &res))
+ return -ENOMEM;
+
+ /* Need physical address for SMCC call */
+ base = (void __iomem *)res.start;
+
+ ecc_mgr_map = regmap_init(NULL, NULL, base,
+ &s10_sdram_regmap_cfg);
+ }
of_node_put(np_eccmgr);
if (IS_ERR(ecc_mgr_map)) {
edac_printk(KERN_ERR, EDAC_DEVICE,
@@ -1067,11 +1111,6 @@ out:
return ret;
}
-static int socfpga_is_a10(void)
-{
- return of_machine_is_compatible("altr,socfpga-arria10");
-}
-
static int validate_parent_available(struct device_node *np);
static const struct of_device_id altr_edac_a10_device_of_match[];
static int __init __maybe_unused altr_init_a10_ecc_device_type(char *compat)
@@ -1079,7 +1118,7 @@ static int __init __maybe_unused altr_init_a10_ecc_device_type(char *compat)
int irq;
struct device_node *child, *np;
- if (!socfpga_is_a10())
+ if (!socfpga_is_a10() && !socfpga_is_s10())
return -ENODEV;
np = of_find_compatible_node(NULL, NULL,
@@ -1325,7 +1364,7 @@ static const struct edac_device_prv_data a10_enetecc_data = {
.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,
+ .inject_fops = &altr_edac_a10_device_inject2_fops,
};
static int __init socfpga_init_ethernet_ecc(void)
@@ -1403,7 +1442,7 @@ static const struct edac_device_prv_data a10_usbecc_data = {
.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,
+ .inject_fops = &altr_edac_a10_device_inject2_fops,
};
static int __init socfpga_init_usb_ecc(void)
@@ -1601,7 +1640,7 @@ static int __init socfpga_init_sdmmc_ecc(void)
int rc = -ENODEV;
struct device_node *child;
- if (!socfpga_is_a10())
+ if (!socfpga_is_a10() && !socfpga_is_s10())
return -ENODEV;
child = of_find_compatible_node(NULL, NULL, "altr,socfpga-sdmmc-ecc");
@@ -1685,6 +1724,74 @@ static ssize_t altr_edac_a10_device_trig(struct file *file,
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;
+}
+
+/*
+ * The Stratix10 EDAC Error Injection Functions differ from Arria10
+ * slightly. A few Arria10 peripherals can use this injection function.
+ * Inject the error into the memory and then readback to trigger the IRQ.
+ */
+static ssize_t altr_edac_a10_device_trig2(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 {
+ /* Setup write of 0 to first 4 bytes */
+ writel(0x0, drvdata->base + ECC_BLK_WDATA0_OFST);
+ writel(0x0, drvdata->base + ECC_BLK_WDATA1_OFST);
+ writel(0x0, drvdata->base + ECC_BLK_WDATA2_OFST);
+ writel(0x0, drvdata->base + ECC_BLK_WDATA3_OFST);
+ /* Setup write of 4 bytes */
+ writel(ECC_WORD_WRITE, drvdata->base + ECC_BLK_DBYTECTRL_OFST);
+ /* Setup Address to 0 */
+ writel(0x0, drvdata->base + ECC_BLK_ADDRESS_OFST);
+ /* Setup accctrl to write & data override */
+ writel(ECC_WRITE_DOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST);
+ /* Kick it. */
+ writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST);
+ /* Setup accctrl to read & ecc override */
+ writel(ECC_READ_EOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST);
+ /* Kick it. */
+ writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST);
+ /* Setup write for single bit change */
+ writel(0x1, drvdata->base + ECC_BLK_WDATA0_OFST);
+ writel(0x0, drvdata->base + ECC_BLK_WDATA1_OFST);
+ writel(0x0, drvdata->base + ECC_BLK_WDATA2_OFST);
+ writel(0x0, drvdata->base + ECC_BLK_WDATA3_OFST);
+ /* Copy Read ECC to Write ECC */
+ writel(readl(drvdata->base + ECC_BLK_RECC0_OFST),
+ drvdata->base + ECC_BLK_WECC0_OFST);
+ writel(readl(drvdata->base + ECC_BLK_RECC1_OFST),
+ drvdata->base + ECC_BLK_WECC1_OFST);
+ /* Setup accctrl to write & ecc override & data override */
+ writel(ECC_WRITE_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST);
+ /* Kick it. */
+ writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST);
+ /* Setup accctrl to read & ecc overwrite & data overwrite */
+ writel(ECC_READ_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST);
+ /* Kick it. */
+ writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST);
+ }
+
/* Ensure the interrupt test bits are set */
wmb();
local_irq_restore(flags);
diff --git a/drivers/edac/altera_edac.h b/drivers/edac/altera_edac.h
index e9e3f9b..4213cb0 100644
--- a/drivers/edac/altera_edac.h
+++ b/drivers/edac/altera_edac.h
@@ -300,6 +300,31 @@ struct altr_sdram_mc_data {
#define S10_DDR0_IRQ_MASK BIT(16)
+/* Define ECC Block Offsets for peripherals */
+#define ECC_BLK_ADDRESS_OFST 0x40
+#define ECC_BLK_RDATA0_OFST 0x44
+#define ECC_BLK_RDATA1_OFST 0x48
+#define ECC_BLK_RDATA2_OFST 0x4C
+#define ECC_BLK_RDATA3_OFST 0x50
+#define ECC_BLK_WDATA0_OFST 0x54
+#define ECC_BLK_WDATA1_OFST 0x58
+#define ECC_BLK_WDATA2_OFST 0x5C
+#define ECC_BLK_WDATA3_OFST 0x60
+#define ECC_BLK_RECC0_OFST 0x64
+#define ECC_BLK_RECC1_OFST 0x68
+#define ECC_BLK_WECC0_OFST 0x6C
+#define ECC_BLK_WECC1_OFST 0x70
+#define ECC_BLK_DBYTECTRL_OFST 0x74
+#define ECC_BLK_ACCCTRL_OFST 0x78
+#define ECC_BLK_STARTACC_OFST 0x7C
+
+#define ECC_XACT_KICK 0x10000
+#define ECC_WORD_WRITE 0xF
+#define ECC_WRITE_DOVR 0x101
+#define ECC_WRITE_EDOVR 0x103
+#define ECC_READ_EOVR 0x2
+#define ECC_READ_EDOVR 0x3
+
struct altr_edac_device_dev;
struct edac_device_prv_data {

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