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soc: fsl: dpio: configure cache stashing destination

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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>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
This commit is contained in:
Ioana Ciornei 2019-02-23 08:48:52 +00:00 committed by Li Yang
parent 390bf02d27
commit 51da14e96e
5 changed files with 79 additions and 0 deletions
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1
drivers/soc/fsl/Kconfig
View File

@ -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

5
drivers/soc/fsl/dpio/dpio-cmd.h
View File

@ -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 */

52
drivers/soc/fsl/dpio/dpio-driver.c
View File

@ -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.

16
drivers/soc/fsl/dpio/dpio.c
View File

@ -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

5
drivers/soc/fsl/dpio/dpio.h
View File

@ -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,