[PATCH v2 net-next] net: dsa: mv88e6xxx: lookup switch name

From: Vivien Didelot
Date: Fri Oct 30 2015 - 19:40:10 EST

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All the mv88e6xxx drivers use the exact same code in their probe
function to lookup the switch name given its ID. Thus introduce a
mv88e6xxx_switch_id structure and a mv88e6xxx_lookup_name function in
the common mv88e6xxx code.

In the meantime make __mv88e6xxx_reg_{read,write} static since we do not
need to expose these low-level r/w routines anymore.

Signed-off-by: Vivien Didelot <vivien.didelot@xxxxxxxxxxxxxxxxxxxx>
---
drivers/net/dsa/mv88e6123_61_65.c | 45 +++++++++++------------------------
drivers/net/dsa/mv88e6131.c | 33 ++++++++------------------
drivers/net/dsa/mv88e6171.c | 28 +++++++---------------
drivers/net/dsa/mv88e6352.c | 49 +++++++++++++--------------------------
drivers/net/dsa/mv88e6xxx.c | 39 ++++++++++++++++++++++++++++---
drivers/net/dsa/mv88e6xxx.h | 13 ++++++++---
6 files changed, 95 insertions(+), 112 deletions(-)

diff --git a/drivers/net/dsa/mv88e6123_61_65.c b/drivers/net/dsa/mv88e6123_61_65.c
index 4bcfd68..d4fcf45 100644
--- a/drivers/net/dsa/mv88e6123_61_65.c
+++ b/drivers/net/dsa/mv88e6123_61_65.c
@@ -17,39 +17,22 @@
#include <net/dsa.h>
#include "mv88e6xxx.h"

+static const struct mv88e6xxx_switch_id mv88e6123_61_65_table[] = {
+ { PORT_SWITCH_ID_6123, "Marvell 88E6123" },
+ { PORT_SWITCH_ID_6123_A1, "Marvell 88E6123 (A1)" },
+ { PORT_SWITCH_ID_6123_A2, "Marvell 88E6123 (A2)" },
+ { PORT_SWITCH_ID_6161, "Marvell 88E6161" },
+ { PORT_SWITCH_ID_6161_A1, "Marvell 88E6161 (A1)" },
+ { PORT_SWITCH_ID_6161_A2, "Marvell 88E6161 (A2)" },
+ { PORT_SWITCH_ID_6165, "Marvell 88E6165" },
+ { PORT_SWITCH_ID_6165_A1, "Marvell 88E6165 (A1)" },
+ { PORT_SWITCH_ID_6165_A2, "Marvell 88e6165 (A2)" },
+};
+
static char *mv88e6123_61_65_probe(struct device *host_dev, int sw_addr)
{
- struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
- int ret;
-
- if (bus == NULL)
- return NULL;
-
- ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
- if (ret >= 0) {
- if (ret == PORT_SWITCH_ID_6123_A1)
- return "Marvell 88E6123 (A1)";
- if (ret == PORT_SWITCH_ID_6123_A2)
- return "Marvell 88E6123 (A2)";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6123)
- return "Marvell 88E6123";
-
- if (ret == PORT_SWITCH_ID_6161_A1)
- return "Marvell 88E6161 (A1)";
- if (ret == PORT_SWITCH_ID_6161_A2)
- return "Marvell 88E6161 (A2)";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6161)
- return "Marvell 88E6161";
-
- if (ret == PORT_SWITCH_ID_6165_A1)
- return "Marvell 88E6165 (A1)";
- if (ret == PORT_SWITCH_ID_6165_A2)
- return "Marvell 88e6165 (A2)";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6165)
- return "Marvell 88E6165";
- }
-
- return NULL;
+ return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6123_61_65_table,
+ ARRAY_SIZE(mv88e6123_61_65_table));
}

static int mv88e6123_61_65_setup_global(struct dsa_switch *ds)
diff --git a/drivers/net/dsa/mv88e6131.c b/drivers/net/dsa/mv88e6131.c
index c73121c..a92ca65 100644
--- a/drivers/net/dsa/mv88e6131.c
+++ b/drivers/net/dsa/mv88e6131.c
@@ -17,31 +17,18 @@
#include <net/dsa.h>
#include "mv88e6xxx.h"

+static const struct mv88e6xxx_switch_id mv88e6131_table[] = {
+ { PORT_SWITCH_ID_6085, "Marvell 88E6085" },
+ { PORT_SWITCH_ID_6095, "Marvell 88E6095/88E6095F" },
+ { PORT_SWITCH_ID_6131, "Marvell 88E6131" },
+ { PORT_SWITCH_ID_6131_B2, "Marvell 88E6131 (B2)" },
+ { PORT_SWITCH_ID_6185, "Marvell 88E6185" },
+};
+
static char *mv88e6131_probe(struct device *host_dev, int sw_addr)
{
- struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
- int ret;
-
- if (bus == NULL)
- return NULL;
-
- ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
- if (ret >= 0) {
- int ret_masked = ret & 0xfff0;
-
- if (ret_masked == PORT_SWITCH_ID_6085)
- return "Marvell 88E6085";
- if (ret_masked == PORT_SWITCH_ID_6095)
- return "Marvell 88E6095/88E6095F";
- if (ret == PORT_SWITCH_ID_6131_B2)
- return "Marvell 88E6131 (B2)";
- if (ret_masked == PORT_SWITCH_ID_6131)
- return "Marvell 88E6131";
- if (ret_masked == PORT_SWITCH_ID_6185)
- return "Marvell 88E6185";
- }
-
- return NULL;
+ return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6131_table,
+ ARRAY_SIZE(mv88e6131_table));
}

static int mv88e6131_setup_global(struct dsa_switch *ds)
diff --git a/drivers/net/dsa/mv88e6171.c b/drivers/net/dsa/mv88e6171.c
index 2c8eb6f..f858c1e 100644
--- a/drivers/net/dsa/mv88e6171.c
+++ b/drivers/net/dsa/mv88e6171.c
@@ -17,27 +17,17 @@
#include <net/dsa.h>
#include "mv88e6xxx.h"

+static const struct mv88e6xxx_switch_id mv88e6171_table[] = {
+ { PORT_SWITCH_ID_6171, "Marvell 88E6171" },
+ { PORT_SWITCH_ID_6175, "Marvell 88E6175" },
+ { PORT_SWITCH_ID_6350, "Marvell 88E6350" },
+ { PORT_SWITCH_ID_6351, "Marvell 88E6351" },
+};
+
static char *mv88e6171_probe(struct device *host_dev, int sw_addr)
{
- struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
- int ret;
-
- if (bus == NULL)
- return NULL;
-
- ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
- if (ret >= 0) {
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6171)
- return "Marvell 88E6171";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6175)
- return "Marvell 88E6175";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6350)
- return "Marvell 88E6350";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6351)
- return "Marvell 88E6351";
- }
-
- return NULL;
+ return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6171_table,
+ ARRAY_SIZE(mv88e6171_table));
}

static int mv88e6171_setup_global(struct dsa_switch *ds)
diff --git a/drivers/net/dsa/mv88e6352.c b/drivers/net/dsa/mv88e6352.c
index cbf4dd8..1ab49f6 100644
--- a/drivers/net/dsa/mv88e6352.c
+++ b/drivers/net/dsa/mv88e6352.c
@@ -22,41 +22,24 @@
#include <net/dsa.h>
#include "mv88e6xxx.h"

+static const struct mv88e6xxx_switch_id mv88e6352_table[] = {
+ { PORT_SWITCH_ID_6172, "Marvell 88E6172" },
+ { PORT_SWITCH_ID_6176, "Marvell 88E6176" },
+ { PORT_SWITCH_ID_6320, "Marvell 88E6320" },
+ { PORT_SWITCH_ID_6320_A1, "Marvell 88E6320 (A1)" },
+ { PORT_SWITCH_ID_6320_A2, "Marvell 88e6320 (A2)" },
+ { PORT_SWITCH_ID_6321, "Marvell 88E6321" },
+ { PORT_SWITCH_ID_6321_A1, "Marvell 88E6321 (A1)" },
+ { PORT_SWITCH_ID_6321_A2, "Marvell 88e6321 (A2)" },
+ { PORT_SWITCH_ID_6352, "Marvell 88E6352" },
+ { PORT_SWITCH_ID_6352_A0, "Marvell 88E6352 (A0)" },
+ { PORT_SWITCH_ID_6352_A1, "Marvell 88E6352 (A1)" },
+};
+
static char *mv88e6352_probe(struct device *host_dev, int sw_addr)
{
- struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
- int ret;
-
- if (bus == NULL)
- return NULL;
-
- ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
- if (ret >= 0) {
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6172)
- return "Marvell 88E6172";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6176)
- return "Marvell 88E6176";
- if (ret == PORT_SWITCH_ID_6320_A1)
- return "Marvell 88E6320 (A1)";
- if (ret == PORT_SWITCH_ID_6320_A2)
- return "Marvell 88e6320 (A2)";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6320)
- return "Marvell 88E6320";
- if (ret == PORT_SWITCH_ID_6321_A1)
- return "Marvell 88E6321 (A1)";
- if (ret == PORT_SWITCH_ID_6321_A2)
- return "Marvell 88e6321 (A2)";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6321)
- return "Marvell 88E6321";
- if (ret == PORT_SWITCH_ID_6352_A0)
- return "Marvell 88E6352 (A0)";
- if (ret == PORT_SWITCH_ID_6352_A1)
- return "Marvell 88E6352 (A1)";
- if ((ret & 0xfff0) == PORT_SWITCH_ID_6352)
- return "Marvell 88E6352";
- }
-
- return NULL;
+ return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6352_table,
+ ARRAY_SIZE(mv88e6352_table));
}

static int mv88e6352_setup_global(struct dsa_switch *ds)
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index 78a179b..35a9fd6 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -59,7 +59,8 @@ static int mv88e6xxx_reg_wait_ready(struct mii_bus *bus, int sw_addr)
return -ETIMEDOUT;
}

-int __mv88e6xxx_reg_read(struct mii_bus *bus, int sw_addr, int addr, int reg)
+static int __mv88e6xxx_reg_read(struct mii_bus *bus, int sw_addr, int addr,
+ int reg)
{
int ret;

@@ -122,8 +123,8 @@ int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg)
return ret;
}

-int __mv88e6xxx_reg_write(struct mii_bus *bus, int sw_addr, int addr,
- int reg, u16 val)
+static int __mv88e6xxx_reg_write(struct mii_bus *bus, int sw_addr, int addr,
+ int reg, u16 val)
{
int ret;

@@ -2480,6 +2481,38 @@ int mv88e6xxx_get_temp_alarm(struct dsa_switch *ds, bool *alarm)
}
#endif /* CONFIG_NET_DSA_HWMON */

+char *mv88e6xxx_lookup_name(struct device *host_dev, int sw_addr,
+ const struct mv88e6xxx_switch_id *table,
+ unsigned int num)
+{
+ struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
+ int i, ret;
+
+ if (!bus)
+ return NULL;
+
+ ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
+ if (ret < 0)
+ return NULL;
+
+ /* Look up the exact switch ID */
+ for (i = 0; i < num; ++i)
+ if (table[i].id == ret)
+ return table[i].name;
+
+ /* Look up only the product number */
+ for (i = 0; i < num; ++i) {
+ if (table[i].id == (ret & PORT_SWITCH_ID_PROD_NUM_MASK)) {
+ dev_warn(host_dev, "unknown revision %d, using base switch 0x%x\n",
+ ret & PORT_SWITCH_ID_REV_MASK,
+ ret & PORT_SWITCH_ID_PROD_NUM_MASK);
+ return table[i].name;
+ }
+ }
+
+ return NULL;
+}
+
static int __init mv88e6xxx_init(void)
{
#if IS_ENABLED(CONFIG_NET_DSA_MV88E6131)
diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h
index 6f9ed5d..83fde17 100644
--- a/drivers/net/dsa/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx.h
@@ -60,6 +60,8 @@
#define PORT_PCS_CTRL_UNFORCED 0x03
#define PORT_PAUSE_CTRL 0x02
#define PORT_SWITCH_ID 0x03
+#define PORT_SWITCH_ID_PROD_NUM_MASK 0xfff0
+#define PORT_SWITCH_ID_REV_MASK 0x000f
#define PORT_SWITCH_ID_6031 0x0310
#define PORT_SWITCH_ID_6035 0x0350
#define PORT_SWITCH_ID_6046 0x0480
@@ -347,6 +349,11 @@
#define GLOBAL2_QOS_WEIGHT 0x1c
#define GLOBAL2_MISC 0x1d

+struct mv88e6xxx_switch_id {
+ u16 id;
+ char *name;
+};
+
struct mv88e6xxx_atu_entry {
u16 fid;
u8 state;
@@ -415,13 +422,13 @@ struct mv88e6xxx_hw_stat {
};

int mv88e6xxx_switch_reset(struct dsa_switch *ds, bool ppu_active);
+char *mv88e6xxx_lookup_name(struct device *host_dev, int sw_addr,
+ const struct mv88e6xxx_switch_id *table,
+ unsigned int num);
int mv88e6xxx_setup_ports(struct dsa_switch *ds);
int mv88e6xxx_setup_common(struct dsa_switch *ds);
int mv88e6xxx_setup_global(struct dsa_switch *ds);
-int __mv88e6xxx_reg_read(struct mii_bus *bus, int sw_addr, int addr, int reg);
int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg);
-int __mv88e6xxx_reg_write(struct mii_bus *bus, int sw_addr, int addr,
- int reg, u16 val);
int mv88e6xxx_reg_write(struct dsa_switch *ds, int addr, int reg, u16 val);
int mv88e6xxx_set_addr_direct(struct dsa_switch *ds, u8 *addr);
int mv88e6xxx_set_addr_indirect(struct dsa_switch *ds, u8 *addr);
--
2.6.2

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