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net: dsa: mv88e6123_61_65: Determine and use number of switch ports

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Determine and use number of switch ports from chip ID instead of always
using the maximum, and return error when an attempt is made to access a
non-existing port.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2015-04-02 04:06:32 +02:00 committed by David S. Miller
parent d198893e73
commit 14ef6ad22a
1 changed files with 38 additions and 16 deletions
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54
drivers/net/dsa/mv88e6123_61_65.c
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@ -27,25 +27,25 @@ static char *mv88e6123_61_65_probe(struct device *host_dev, int sw_addr)
ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), 0x03); ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), 0x03);
if (ret >= 0) { if (ret >= 0) {
if (ret == 0x1212) if (ret == ID_6123_A1)
return "Marvell 88E6123 (A1)"; return "Marvell 88E6123 (A1)";
if (ret == 0x1213) if (ret == ID_6123_A2)
return "Marvell 88E6123 (A2)"; return "Marvell 88E6123 (A2)";
if ((ret & 0xfff0) == 0x1210) if ((ret & 0xfff0) == ID_6123)
return "Marvell 88E6123"; return "Marvell 88E6123";
if (ret == 0x1612) if (ret == ID_6161_A1)
return "Marvell 88E6161 (A1)"; return "Marvell 88E6161 (A1)";
if (ret == 0x1613) if (ret == ID_6161_A2)
return "Marvell 88E6161 (A2)"; return "Marvell 88E6161 (A2)";
if ((ret & 0xfff0) == 0x1610) if ((ret & 0xfff0) == ID_6161)
return "Marvell 88E6161"; return "Marvell 88E6161";
if (ret == 0x1652) if (ret == ID_6165_A1)
return "Marvell 88E6165 (A1)"; return "Marvell 88E6165 (A1)";
if (ret == 0x1653) if (ret == ID_6165_A2)
return "Marvell 88e6165 (A2)"; return "Marvell 88e6165 (A2)";
if ((ret & 0xfff0) == 0x1650) if ((ret & 0xfff0) == ID_6165)
return "Marvell 88E6165"; return "Marvell 88E6165";
} }
@ -54,12 +54,13 @@ static char *mv88e6123_61_65_probe(struct device *host_dev, int sw_addr)
static int mv88e6123_61_65_switch_reset(struct dsa_switch *ds) static int mv88e6123_61_65_switch_reset(struct dsa_switch *ds)
{ {
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int i; int i;
int ret; int ret;
unsigned long timeout; unsigned long timeout;
/* Set all ports to the disabled state. */ /* Set all ports to the disabled state. */
for (i = 0; i < 8; i++) { for (i = 0; i < ps->num_ports; i++) {
ret = REG_READ(REG_PORT(i), 0x04); ret = REG_READ(REG_PORT(i), 0x04);
REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc); REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc);
} }
@ -271,6 +272,7 @@ static int mv88e6123_61_65_setup_port(struct dsa_switch *ds, int p)
static int mv88e6123_61_65_setup(struct dsa_switch *ds) static int mv88e6123_61_65_setup(struct dsa_switch *ds)
{ {
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int i; int i;
int ret; int ret;
@ -278,6 +280,18 @@ static int mv88e6123_61_65_setup(struct dsa_switch *ds)
if (ret < 0) if (ret < 0)
return ret; return ret;
switch (ps->id) {
case ID_6123:
ps->num_ports = 3;
break;
case ID_6161:
case ID_6165:
ps->num_ports = 6;
break;
default:
return -ENODEV;
}
ret = mv88e6123_61_65_switch_reset(ds); ret = mv88e6123_61_65_switch_reset(ds);
if (ret < 0) if (ret < 0)
return ret; return ret;
@ -288,7 +302,7 @@ static int mv88e6123_61_65_setup(struct dsa_switch *ds)
if (ret < 0) if (ret < 0)
return ret; return ret;
for (i = 0; i < 6; i++) { for (i = 0; i < ps->num_ports; i++) {
ret = mv88e6123_61_65_setup_port(ds, i); ret = mv88e6123_61_65_setup_port(ds, i);
if (ret < 0) if (ret < 0)
return ret; return ret;
@ -297,20 +311,25 @@ static int mv88e6123_61_65_setup(struct dsa_switch *ds)
return 0; return 0;
} }
static int mv88e6123_61_65_port_to_phy_addr(int port) static int mv88e6123_61_65_port_to_phy_addr(struct dsa_switch *ds, int port)
{ {
if (port >= 0 && port <= 4) struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
if (port >= 0 && port < ps->num_ports)
return port; return port;
return -1; return -EINVAL;
} }
static int static int
mv88e6123_61_65_phy_read(struct dsa_switch *ds, int port, int regnum) mv88e6123_61_65_phy_read(struct dsa_switch *ds, int port, int regnum)
{ {
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int addr = mv88e6123_61_65_port_to_phy_addr(port); int addr = mv88e6123_61_65_port_to_phy_addr(ds, port);
int ret; int ret;
if (addr < 0)
return addr;
mutex_lock(&ps->phy_mutex); mutex_lock(&ps->phy_mutex);
ret = mv88e6xxx_phy_read(ds, addr, regnum); ret = mv88e6xxx_phy_read(ds, addr, regnum);
mutex_unlock(&ps->phy_mutex); mutex_unlock(&ps->phy_mutex);
@ -322,9 +341,12 @@ mv88e6123_61_65_phy_write(struct dsa_switch *ds,
int port, int regnum, u16 val) int port, int regnum, u16 val)
{ {
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int addr = mv88e6123_61_65_port_to_phy_addr(port); int addr = mv88e6123_61_65_port_to_phy_addr(ds, port);
int ret; int ret;
if (addr < 0)
return addr;
mutex_lock(&ps->phy_mutex); mutex_lock(&ps->phy_mutex);
ret = mv88e6xxx_phy_write(ds, addr, regnum, val); ret = mv88e6xxx_phy_write(ds, addr, regnum, val);
mutex_unlock(&ps->phy_mutex); mutex_unlock(&ps->phy_mutex);