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path: root/drivers/memory/fsl-corenet-cf.c
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Diffstat (limited to 'drivers/memory/fsl-corenet-cf.c')
-rw-r--r--drivers/memory/fsl-corenet-cf.c36
1 files changed, 34 insertions, 2 deletions
diff --git a/drivers/memory/fsl-corenet-cf.c b/drivers/memory/fsl-corenet-cf.c
index fc7ab5a3561e..d708ded5457b 100644
--- a/drivers/memory/fsl-corenet-cf.c
+++ b/drivers/memory/fsl-corenet-cf.c
@@ -27,18 +27,29 @@ enum ccf_version {
struct ccf_info {
enum ccf_version version;
int err_reg_offs;
+ bool has_brr;
};
static const struct ccf_info ccf1_info = {
.version = CCF1,
.err_reg_offs = 0xa00,
+ .has_brr = false,
};
static const struct ccf_info ccf2_info = {
.version = CCF2,
.err_reg_offs = 0xe40,
+ .has_brr = true,
};
+/*
+ * This register is present but not documented, with different values for
+ * IP_ID, on other chips with fsl,corenet2-cf such as t4240 and b4860.
+ */
+#define CCF_BRR 0xbf8
+#define CCF_BRR_IPID 0xffff0000
+#define CCF_BRR_IPID_T1040 0x09310000
+
static const struct of_device_id ccf_matches[] = {
{
.compatible = "fsl,corenet1-cf",
@@ -66,6 +77,8 @@ struct ccf_err_regs {
/* LAE/CV also valid for errdis and errinten */
#define ERRDET_LAE (1 << 0) /* Local Access Error */
#define ERRDET_CV (1 << 1) /* Coherency Violation */
+#define ERRDET_UTID (1 << 2) /* Unavailable Target ID (t1040) */
+#define ERRDET_MCST (1 << 3) /* Multicast Stash (t1040) */
#define ERRDET_CTYPE_SHIFT 26 /* Capture Type (ccf2 only) */
#define ERRDET_CTYPE_MASK (0x1f << ERRDET_CTYPE_SHIFT)
#define ERRDET_CAP (1 << 31) /* Capture Valid (ccf2 only) */
@@ -84,6 +97,7 @@ struct ccf_private {
struct device *dev;
void __iomem *regs;
struct ccf_err_regs __iomem *err_regs;
+ bool t1040;
};
static irqreturn_t ccf_irq(int irq, void *dev_id)
@@ -142,6 +156,12 @@ static irqreturn_t ccf_irq(int irq, void *dev_id)
if (errdet & ERRDET_CV)
dev_crit(ccf->dev, "Coherency Violation\n");
+ if (errdet & ERRDET_UTID)
+ dev_crit(ccf->dev, "Unavailable Target ID\n");
+
+ if (errdet & ERRDET_MCST)
+ dev_crit(ccf->dev, "Multicast Stash\n");
+
if (cap_valid) {
dev_crit(ccf->dev, "address 0x%09llx, src id 0x%x\n",
addr, src_id);
@@ -157,6 +177,7 @@ static int ccf_probe(struct platform_device *pdev)
struct ccf_private *ccf;
struct resource *r;
const struct of_device_id *match;
+ u32 errinten;
int ret, irq;
match = of_match_device(ccf_matches, &pdev->dev);
@@ -183,6 +204,13 @@ static int ccf_probe(struct platform_device *pdev)
ccf->info = match->data;
ccf->err_regs = ccf->regs + ccf->info->err_reg_offs;
+ if (ccf->info->has_brr) {
+ u32 brr = ioread32be(ccf->regs + CCF_BRR);
+
+ if ((brr & CCF_BRR_IPID) == CCF_BRR_IPID_T1040)
+ ccf->t1040 = true;
+ }
+
dev_set_drvdata(&pdev->dev, ccf);
irq = platform_get_irq(pdev, 0);
@@ -197,15 +225,19 @@ static int ccf_probe(struct platform_device *pdev)
return ret;
}
+ errinten = ERRDET_LAE | ERRDET_CV;
+ if (ccf->t1040)
+ errinten |= ERRDET_UTID | ERRDET_MCST;
+
switch (ccf->info->version) {
case CCF1:
/* On CCF1 this register enables rather than disables. */
- iowrite32be(ERRDET_LAE | ERRDET_CV, &ccf->err_regs->errdis);
+ iowrite32be(errinten, &ccf->err_regs->errdis);
break;
case CCF2:
iowrite32be(0, &ccf->err_regs->errdis);
- iowrite32be(ERRDET_LAE | ERRDET_CV, &ccf->err_regs->errinten);
+ iowrite32be(errinten, &ccf->err_regs->errinten);
break;
}