@@ -22,6 +22,7 @@ config FSL_GUTS
config FSL_MC_DPIO
tristate "QorIQ DPAA2 DPIO driver"
depends on FSL_MC_BUS
+ select SOC_BUS
help
Driver for the DPAA2 DPIO object. A DPIO provides queue and
buffer management facilities for software to interact with
@@ -26,6 +26,7 @@
#define DPIO_CMDID_DISABLE DPIO_CMD(0x003)
#define DPIO_CMDID_GET_ATTR DPIO_CMD(0x004)
#define DPIO_CMDID_RESET DPIO_CMD(0x005)
+#define DPIO_CMDID_SET_STASHING_DEST DPIO_CMD(0x120)
struct dpio_cmd_open {
__le32 dpio_id;
@@ -47,4 +48,8 @@ struct dpio_rsp_get_attr {
__le32 qbman_version;
};
+struct dpio_stashing_dest {
+ u8 sdest;
+};
+
#endif /* _FSL_DPIO_CMD_H */
@@ -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.
@@ -166,6 +166,22 @@ int dpio_get_attributes(struct fsl_mc_io *mc_io,
return 0;
}
+int dpio_set_stashing_destination(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 sdest)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpio_stashing_dest *dpio_cmd;
+
+ cmd.header = mc_encode_cmd_header(DPIO_CMDID_SET_STASHING_DEST,
+ cmd_flags, token);
+ dpio_cmd = (struct dpio_stashing_dest *)cmd.params;
+ dpio_cmd->sdest = sdest;
+
+ return mc_send_command(mc_io, &cmd);
+}
+
/**
* dpio_get_api_version - Get Data Path I/O API version
* @mc_io: Pointer to MC portal's DPIO object
@@ -75,6 +75,11 @@ int dpio_get_attributes(struct fsl_mc_io *mc_io,
u16 token,
struct dpio_attr *attr);
+int dpio_set_stashing_destination(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 dest);
+
int dpio_get_api_version(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 *major_ver,
Depending on the SoC version and the CPU id, configure the cache stashing destination for a specific dpio. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> --- drivers/soc/fsl/Kconfig | 1 + drivers/soc/fsl/dpio/dpio-cmd.h | 5 ++++ drivers/soc/fsl/dpio/dpio-driver.c | 52 ++++++++++++++++++++++++++++++++++++++ drivers/soc/fsl/dpio/dpio.c | 16 ++++++++++++ drivers/soc/fsl/dpio/dpio.h | 5 ++++ 5 files changed, 79 insertions(+)