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path: root/drivers/soc/fsl/dpio/dpio-driver.c
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Diffstat (limited to 'drivers/soc/fsl/dpio/dpio-driver.c')
-rw-r--r--drivers/soc/fsl/dpio/dpio-driver.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/soc/fsl/dpio/dpio-driver.c b/drivers/soc/fsl/dpio/dpio-driver.c
index a28799b62d53..c0cdc8946031 100644
--- a/drivers/soc/fsl/dpio/dpio-driver.c
+++ b/drivers/soc/fsl/dpio/dpio-driver.c
@@ -14,6 +14,7 @@
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/io.h>
+#include <linux/sys_soc.h>
#include <linux/fsl/mc.h>
#include <soc/fsl/dpaa2-io.h>
@@ -32,6 +33,46 @@ struct dpio_priv {
static cpumask_var_t cpus_unused_mask;
+static const struct soc_device_attribute ls1088a_soc[] = {
+ {.family = "QorIQ LS1088A"},
+ { /* sentinel */ }
+};
+
+static const struct soc_device_attribute ls2080a_soc[] = {
+ {.family = "QorIQ LS2080A"},
+ { /* sentinel */ }
+};
+
+static const struct soc_device_attribute ls2088a_soc[] = {
+ {.family = "QorIQ LS2088A"},
+ { /* sentinel */ }
+};
+
+static const struct soc_device_attribute lx2160a_soc[] = {
+ {.family = "QorIQ LX2160A"},
+ { /* sentinel */ }
+};
+
+static int dpaa2_dpio_get_cluster_sdest(struct fsl_mc_device *dpio_dev, int cpu)
+{
+ int cluster_base, cluster_size;
+
+ if (soc_device_match(ls1088a_soc)) {
+ cluster_base = 2;
+ cluster_size = 4;
+ } else if (soc_device_match(ls2080a_soc) ||
+ soc_device_match(ls2088a_soc) ||
+ soc_device_match(lx2160a_soc)) {
+ cluster_base = 0;
+ cluster_size = 2;
+ } else {
+ dev_err(&dpio_dev->dev, "unknown SoC version\n");
+ return -1;
+ }
+
+ return cluster_base + cpu / cluster_size;
+}
+
static irqreturn_t dpio_irq_handler(int irq_num, void *arg)
{
struct device *dev = (struct device *)arg;
@@ -89,6 +130,7 @@ static int dpaa2_dpio_probe(struct fsl_mc_device *dpio_dev)
int err = -ENOMEM;
struct device *dev = &dpio_dev->dev;
int possible_next_cpu;
+ int sdest;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -145,6 +187,16 @@ static int dpaa2_dpio_probe(struct fsl_mc_device *dpio_dev)
desc.cpu = possible_next_cpu;
cpumask_clear_cpu(possible_next_cpu, cpus_unused_mask);
+ sdest = dpaa2_dpio_get_cluster_sdest(dpio_dev, desc.cpu);
+ if (sdest >= 0) {
+ err = dpio_set_stashing_destination(dpio_dev->mc_io, 0,
+ dpio_dev->mc_handle,
+ sdest);
+ if (err)
+ dev_err(dev, "dpio_set_stashing_destination failed for cpu%d\n",
+ desc.cpu);
+ }
+
/*
* Set the CENA regs to be the cache inhibited area of the portal to
* avoid coherency issues if a user migrates to another core.