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Merge branch 'net-dsa-mv88e6xxx-centralize-SERDES-IRQ-handling'

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Vivien Didelot says:

====================
net: dsa: mv88e6xxx: centralize SERDES IRQ handling

Following Marek's work on the abstraction of the SERDES lanes mapping, this
series trades the .serdes_irq_setup and .serdes_irq_free callbacks for new
.serdes_irq_mapping, .serdes_irq_enable and .serdes_irq_status operations.

This has the benefit to limit the various SERDES implementations to simple
register accesses only; centralize the IRQ handling and mutex locking logic;
as well as reducing boilerplate in the driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-09-01 12:16:38 -07:00
commit 4bc61b0b16
5 changed files with 321 additions and 357 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

141
drivers/net/dsa/mv88e6xxx/chip.c
View File

@ -2054,27 +2054,93 @@ static int mv88e6xxx_setup_egress_floods(struct mv88e6xxx_chip *chip, int port)
return 0;
}
static irqreturn_t mv88e6xxx_serdes_irq_thread_fn(int irq, void *dev_id)
{
struct mv88e6xxx_port *mvp = dev_id;
struct mv88e6xxx_chip *chip = mvp->chip;
irqreturn_t ret = IRQ_NONE;
int port = mvp->port;
u8 lane;
mv88e6xxx_reg_lock(chip);
lane = mv88e6xxx_serdes_get_lane(chip, port);
if (lane)
ret = mv88e6xxx_serdes_irq_status(chip, port, lane);
mv88e6xxx_reg_unlock(chip);
return ret;
}
static int mv88e6xxx_serdes_irq_request(struct mv88e6xxx_chip *chip, int port,
u8 lane)
{
struct mv88e6xxx_port *dev_id = &chip->ports[port];
unsigned int irq;
int err;
/* Nothing to request if this SERDES port has no IRQ */
irq = mv88e6xxx_serdes_irq_mapping(chip, port);
if (!irq)
return 0;
/* Requesting the IRQ will trigger IRQ callbacks, so release the lock */
mv88e6xxx_reg_unlock(chip);
err = request_threaded_irq(irq, NULL, mv88e6xxx_serdes_irq_thread_fn,
IRQF_ONESHOT, "mv88e6xxx-serdes", dev_id);
mv88e6xxx_reg_lock(chip);
if (err)
return err;
dev_id->serdes_irq = irq;
return mv88e6xxx_serdes_irq_enable(chip, port, lane);
}
static int mv88e6xxx_serdes_irq_free(struct mv88e6xxx_chip *chip, int port,
u8 lane)
{
struct mv88e6xxx_port *dev_id = &chip->ports[port];
unsigned int irq = dev_id->serdes_irq;
int err;
/* Nothing to free if no IRQ has been requested */
if (!irq)
return 0;
err = mv88e6xxx_serdes_irq_disable(chip, port, lane);
/* Freeing the IRQ will trigger IRQ callbacks, so release the lock */
mv88e6xxx_reg_unlock(chip);
free_irq(irq, dev_id);
mv88e6xxx_reg_lock(chip);
dev_id->serdes_irq = 0;
return err;
}
static int mv88e6xxx_serdes_power(struct mv88e6xxx_chip *chip, int port,
bool on)
{
u8 lane;
int err;
if (!chip->info->ops->serdes_power)
lane = mv88e6xxx_serdes_get_lane(chip, port);
if (!lane)
return 0;
if (on) {
err = chip->info->ops->serdes_power(chip, port, true);
err = mv88e6xxx_serdes_power_up(chip, port, lane);
if (err)
return err;
if (chip->info->ops->serdes_irq_setup)
err = chip->info->ops->serdes_irq_setup(chip, port);
err = mv88e6xxx_serdes_irq_request(chip, port, lane);
} else {
if (chip->info->ops->serdes_irq_free &&
chip->ports[port].serdes_irq)
chip->info->ops->serdes_irq_free(chip, port);
err = mv88e6xxx_serdes_irq_free(chip, port, lane);
if (err)
return err;
err = chip->info->ops->serdes_power(chip, port, false);
err = mv88e6xxx_serdes_power_down(chip, port, lane);
}
return err;
@ -2931,8 +2997,9 @@ static const struct mv88e6xxx_ops mv88e6141_ops = {
.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
.serdes_get_lane = mv88e6341_serdes_get_lane,
.serdes_irq_setup = mv88e6390_serdes_irq_setup,
.serdes_irq_free = mv88e6390_serdes_irq_free,
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6341_phylink_validate,
};
@ -3092,6 +3159,7 @@ static const struct mv88e6xxx_ops mv88e6172_ops = {
.rmu_disable = mv88e6352_g1_rmu_disable,
.vtu_getnext = mv88e6352_g1_vtu_getnext,
.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
.serdes_get_lane = mv88e6352_serdes_get_lane,
.serdes_power = mv88e6352_serdes_power,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6352_phylink_validate,
@ -3177,9 +3245,11 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
.rmu_disable = mv88e6352_g1_rmu_disable,
.vtu_getnext = mv88e6352_g1_vtu_getnext,
.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
.serdes_get_lane = mv88e6352_serdes_get_lane,
.serdes_power = mv88e6352_serdes_power,
.serdes_irq_setup = mv88e6352_serdes_irq_setup,
.serdes_irq_free = mv88e6352_serdes_irq_free,
.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
.serdes_irq_enable = mv88e6352_serdes_irq_enable,
.serdes_irq_status = mv88e6352_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6352_phylink_validate,
};
@ -3261,8 +3331,9 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
.serdes_get_lane = mv88e6390_serdes_get_lane,
.serdes_irq_setup = mv88e6390_serdes_irq_setup,
.serdes_irq_free = mv88e6390_serdes_irq_free,
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6390_phylink_validate,
};
@ -3308,8 +3379,9 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
.serdes_get_lane = mv88e6390x_serdes_get_lane,
.serdes_irq_setup = mv88e6390_serdes_irq_setup,
.serdes_irq_free = mv88e6390_serdes_irq_free,
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6390x_phylink_validate,
};
@ -3355,8 +3427,9 @@ static const struct mv88e6xxx_ops mv88e6191_ops = {
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
.serdes_get_lane = mv88e6390_serdes_get_lane,
.serdes_irq_setup = mv88e6390_serdes_irq_setup,
.serdes_irq_free = mv88e6390_serdes_irq_free,
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
.phylink_validate = mv88e6390_phylink_validate,
@ -3402,9 +3475,11 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
.rmu_disable = mv88e6352_g1_rmu_disable,
.vtu_getnext = mv88e6352_g1_vtu_getnext,
.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
.serdes_get_lane = mv88e6352_serdes_get_lane,
.serdes_power = mv88e6352_serdes_power,
.serdes_irq_setup = mv88e6352_serdes_irq_setup,
.serdes_irq_free = mv88e6352_serdes_irq_free,
.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
.serdes_irq_enable = mv88e6352_serdes_irq_enable,
.serdes_irq_status = mv88e6352_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6352_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@ -3492,8 +3567,9 @@ static const struct mv88e6xxx_ops mv88e6290_ops = {
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
.serdes_get_lane = mv88e6390_serdes_get_lane,
.serdes_irq_setup = mv88e6390_serdes_irq_setup,
.serdes_irq_free = mv88e6390_serdes_irq_free,
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@ -3629,8 +3705,9 @@ static const struct mv88e6xxx_ops mv88e6341_ops = {
.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
.serdes_get_lane = mv88e6341_serdes_get_lane,
.serdes_irq_setup = mv88e6390_serdes_irq_setup,
.serdes_irq_free = mv88e6390_serdes_irq_free,
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@ -3759,9 +3836,11 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
.rmu_disable = mv88e6352_g1_rmu_disable,
.vtu_getnext = mv88e6352_g1_vtu_getnext,
.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
.serdes_get_lane = mv88e6352_serdes_get_lane,
.serdes_power = mv88e6352_serdes_power,
.serdes_irq_setup = mv88e6352_serdes_irq_setup,
.serdes_irq_free = mv88e6352_serdes_irq_free,
.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
.serdes_irq_enable = mv88e6352_serdes_irq_enable,
.serdes_irq_status = mv88e6352_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6352_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@ -3814,8 +3893,9 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
.serdes_get_lane = mv88e6390_serdes_get_lane,
.serdes_irq_setup = mv88e6390_serdes_irq_setup,
.serdes_irq_free = mv88e6390_serdes_irq_free,
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@ -3865,8 +3945,9 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
.serdes_get_lane = mv88e6390x_serdes_get_lane,
.serdes_irq_setup = mv88e6390_serdes_irq_setup,
.serdes_irq_free = mv88e6390_serdes_irq_free,
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,

15
drivers/net/dsa/mv88e6xxx/chip.h
View File

@ -199,7 +199,7 @@ struct mv88e6xxx_port {
u64 vtu_member_violation;
u64 vtu_miss_violation;
u8 cmode;
int serdes_irq;
unsigned int serdes_irq;
};
struct mv88e6xxx_chip {
@ -441,14 +441,19 @@ struct mv88e6xxx_ops {
int (*mgmt_rsvd2cpu)(struct mv88e6xxx_chip *chip);
/* Power on/off a SERDES interface */
int (*serdes_power)(struct mv88e6xxx_chip *chip, int port, bool on);
int (*serdes_power)(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool up);
/* SERDES lane mapping */
int (*serdes_get_lane)(struct mv88e6xxx_chip *chip, int port, u8 *lane);
u8 (*serdes_get_lane)(struct mv88e6xxx_chip *chip, int port);
/* SERDES interrupt handling */
int (*serdes_irq_setup)(struct mv88e6xxx_chip *chip, int port);
void (*serdes_irq_free)(struct mv88e6xxx_chip *chip, int port);
unsigned int (*serdes_irq_mapping)(struct mv88e6xxx_chip *chip,
int port);
int (*serdes_irq_enable)(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool enable);
irqreturn_t (*serdes_irq_status)(struct mv88e6xxx_chip *chip, int port,
u8 lane);
/* Statistics from the SERDES interface */
int (*serdes_get_sset_count)(struct mv88e6xxx_chip *chip, int port);

21
drivers/net/dsa/mv88e6xxx/port.c
View File

@ -431,18 +431,15 @@ static int mv88e6xxx_port_set_cmode(struct mv88e6xxx_chip *chip, int port,
if (cmode == chip->ports[port].cmode)
return 0;
err = mv88e6xxx_serdes_get_lane(chip, port, &lane);
if (err && err != -ENODEV)
return err;
if (err != -ENODEV) {
lane = mv88e6xxx_serdes_get_lane(chip, port);
if (lane) {
if (chip->ports[port].serdes_irq) {
err = mv88e6390_serdes_irq_disable(chip, port, lane);
err = mv88e6xxx_serdes_irq_disable(chip, port, lane);
if (err)
return err;
}
err = mv88e6390_serdes_power(chip, port, false);
err = mv88e6xxx_serdes_power_down(chip, port, lane);
if (err)
return err;
}
@ -463,16 +460,16 @@ static int mv88e6xxx_port_set_cmode(struct mv88e6xxx_chip *chip, int port,
chip->ports[port].cmode = cmode;
err = mv88e6xxx_serdes_get_lane(chip, port, &lane);
if (err)
return err;
lane = mv88e6xxx_serdes_get_lane(chip, port);
if (!lane)
return -ENODEV;
err = mv88e6390_serdes_power(chip, port, true);
err = mv88e6xxx_serdes_power_up(chip, port, lane);
if (err)
return err;
if (chip->ports[port].serdes_irq) {
err = mv88e6390_serdes_irq_enable(chip, port, lane);
err = mv88e6xxx_serdes_irq_enable(chip, port, lane);
if (err)
return err;
}

392
drivers/net/dsa/mv88e6xxx/serdes.c
View File

@ -49,7 +49,8 @@ static int mv88e6390_serdes_write(struct mv88e6xxx_chip *chip,
return mv88e6xxx_phy_write(chip, lane, reg_c45, val);
}
static int mv88e6352_serdes_power_set(struct mv88e6xxx_chip *chip, bool on)
int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool up)
{
u16 val, new_val;
int err;
@ -58,7 +59,7 @@ static int mv88e6352_serdes_power_set(struct mv88e6xxx_chip *chip, bool on)
if (err)
return err;
if (on)
if (up)
new_val = val & ~BMCR_PDOWN;
else
new_val = val | BMCR_PDOWN;
@ -69,31 +70,27 @@ static int mv88e6352_serdes_power_set(struct mv88e6xxx_chip *chip, bool on)
return err;
}
static bool mv88e6352_port_has_serdes(struct mv88e6xxx_chip *chip, int port)
u8 mv88e6352_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
{
u8 cmode = chip->ports[port].cmode;
u8 lane = 0;
if ((cmode == MV88E6XXX_PORT_STS_CMODE_100BASEX) ||
(cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX) ||
(cmode == MV88E6XXX_PORT_STS_CMODE_SGMII))
lane = 0xff; /* Unused */
return lane;
}
static bool mv88e6352_port_has_serdes(struct mv88e6xxx_chip *chip, int port)
{
if (mv88e6xxx_serdes_get_lane(chip, port))
return true;
return false;
}
int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
{
int err;
if (mv88e6352_port_has_serdes(chip, port)) {
err = mv88e6352_serdes_power_set(chip, on);
if (err < 0)
return err;
}
return 0;
}
struct mv88e6352_serdes_hw_stat {
char string[ETH_GSTRING_LEN];
int sizeof_stat;
@ -186,254 +183,178 @@ static void mv88e6352_serdes_irq_link(struct mv88e6xxx_chip *chip, int port)
struct dsa_switch *ds = chip->ds;
u16 status;
bool up;
int err;
mv88e6352_serdes_read(chip, MII_BMSR, &status);
err = mv88e6352_serdes_read(chip, MII_BMSR, &status);
if (err)
return;
/* Status must be read twice in order to give the current link
* status. Otherwise the change in link status since the last
* read of the register is returned.
*/
mv88e6352_serdes_read(chip, MII_BMSR, &status);
err = mv88e6352_serdes_read(chip, MII_BMSR, &status);
if (err)
return;
up = status & BMSR_LSTATUS;
dsa_port_phylink_mac_change(ds, port, up);
}
static irqreturn_t mv88e6352_serdes_thread_fn(int irq, void *dev_id)
irqreturn_t mv88e6352_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
u8 lane)
{
struct mv88e6xxx_port *port = dev_id;
struct mv88e6xxx_chip *chip = port->chip;
irqreturn_t ret = IRQ_NONE;
u16 status;
int err;
mv88e6xxx_reg_lock(chip);
err = mv88e6352_serdes_read(chip, MV88E6352_SERDES_INT_STATUS, &status);
if (err)
goto out;
return ret;
if (status & MV88E6352_SERDES_INT_LINK_CHANGE) {
ret = IRQ_HANDLED;
mv88e6352_serdes_irq_link(chip, port->port);
mv88e6352_serdes_irq_link(chip, port);
}
out:
mv88e6xxx_reg_unlock(chip);
return ret;
}
static int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip)
int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool enable)
{
return mv88e6352_serdes_write(chip, MV88E6352_SERDES_INT_ENABLE,
MV88E6352_SERDES_INT_LINK_CHANGE);
u16 val = 0;
if (enable)
val |= MV88E6352_SERDES_INT_LINK_CHANGE;
return mv88e6352_serdes_write(chip, MV88E6352_SERDES_INT_ENABLE, val);
}
static int mv88e6352_serdes_irq_disable(struct mv88e6xxx_chip *chip)
unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
{
return mv88e6352_serdes_write(chip, MV88E6352_SERDES_INT_ENABLE, 0);
return irq_find_mapping(chip->g2_irq.domain, MV88E6352_SERDES_IRQ);
}
int mv88e6352_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
{
int err;
if (!mv88e6352_port_has_serdes(chip, port))
return 0;
chip->ports[port].serdes_irq = irq_find_mapping(chip->g2_irq.domain,
MV88E6352_SERDES_IRQ);
if (chip->ports[port].serdes_irq < 0) {
dev_err(chip->dev, "Unable to map SERDES irq: %d\n",
chip->ports[port].serdes_irq);
return chip->ports[port].serdes_irq;
}
/* Requesting the IRQ will trigger irq callbacks. So we cannot
* hold the reg_lock.
*/
mv88e6xxx_reg_unlock(chip);
err = request_threaded_irq(chip->ports[port].serdes_irq, NULL,
mv88e6352_serdes_thread_fn,
IRQF_ONESHOT, "mv88e6xxx-serdes",
&chip->ports[port]);
mv88e6xxx_reg_lock(chip);
if (err) {
dev_err(chip->dev, "Unable to request SERDES interrupt: %d\n",
err);
return err;
}
return mv88e6352_serdes_irq_enable(chip);
}
void mv88e6352_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
{
if (!mv88e6352_port_has_serdes(chip, port))
return;
mv88e6352_serdes_irq_disable(chip);
/* Freeing the IRQ will trigger irq callbacks. So we cannot
* hold the reg_lock.
*/
mv88e6xxx_reg_unlock(chip);
free_irq(chip->ports[port].serdes_irq, &chip->ports[port]);
mv88e6xxx_reg_lock(chip);
chip->ports[port].serdes_irq = 0;
}
int mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port, u8 *lane)
u8 mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
{
u8 cmode = chip->ports[port].cmode;
u8 lane = 0;
if (port != 5)
return -ENODEV;
if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX) {
*lane = MV88E6341_PORT5_LANE;
return 0;
switch (port) {
case 5:
if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
lane = MV88E6341_PORT5_LANE;
break;
}
return -ENODEV;
return lane;
}
int mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port, u8 *lane)
u8 mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
{
u8 cmode = chip->ports[port].cmode;
u8 lane = 0;
switch (port) {
case 9:
if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX) {
*lane = MV88E6390_PORT9_LANE0;
return 0;
}
cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
lane = MV88E6390_PORT9_LANE0;
break;
case 10:
if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX) {
*lane = MV88E6390_PORT10_LANE0;
return 0;
}
break;
default:
cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
lane = MV88E6390_PORT10_LANE0;
break;
}
return -ENODEV;
return lane;
}
int mv88e6390x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port, u8 *lane)
u8 mv88e6390x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
{
u8 cmode_port9, cmode_port10, cmode_port;
cmode_port9 = chip->ports[9].cmode;
cmode_port10 = chip->ports[10].cmode;
cmode_port = chip->ports[port].cmode;
u8 cmode_port = chip->ports[port].cmode;
u8 cmode_port10 = chip->ports[10].cmode;
u8 cmode_port9 = chip->ports[9].cmode;
u8 lane = 0;
switch (port) {
case 2:
if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_2500BASEX) {
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX) {
*lane = MV88E6390_PORT9_LANE1;
return 0;
}
}
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
lane = MV88E6390_PORT9_LANE1;
break;
case 3:
if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_RXAUI) {
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX) {
*lane = MV88E6390_PORT9_LANE2;
return 0;
}
}
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
lane = MV88E6390_PORT9_LANE2;
break;
case 4:
if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_RXAUI) {
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX) {
*lane = MV88E6390_PORT9_LANE3;
return 0;
}
}
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
lane = MV88E6390_PORT9_LANE3;
break;
case 5:
if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_2500BASEX) {
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX) {
*lane = MV88E6390_PORT10_LANE1;
return 0;
}
}
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
lane = MV88E6390_PORT10_LANE1;
break;
case 6:
if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_RXAUI) {
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX) {
*lane = MV88E6390_PORT10_LANE2;
return 0;
}
}
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
lane = MV88E6390_PORT10_LANE2;
break;
case 7:
if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_RXAUI) {
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX) {
*lane = MV88E6390_PORT10_LANE3;
return 0;
}
}
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
lane = MV88E6390_PORT10_LANE3;
break;
case 9:
if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_XAUI ||
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_RXAUI) {
*lane = MV88E6390_PORT9_LANE0;
return 0;
}
cmode_port9 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
lane = MV88E6390_PORT9_LANE0;
break;
case 10:
if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_XAUI ||
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_RXAUI) {
*lane = MV88E6390_PORT10_LANE0;
return 0;
}
break;
default:
cmode_port10 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
lane = MV88E6390_PORT10_LANE0;
break;
}
return -ENODEV;
return lane;
}
/* Set the power on/off for 10GBASE-R and 10GBASE-X4/X2 */
/* Set power up/down for 10GBASE-R and 10GBASE-X4/X2 */
static int mv88e6390_serdes_power_10g(struct mv88e6xxx_chip *chip, u8 lane,
bool on)
bool up)
{
u16 val, new_val;
int err;
@ -444,7 +365,7 @@ static int mv88e6390_serdes_power_10g(struct mv88e6xxx_chip *chip, u8 lane,
if (err)
return err;
if (on)
if (up)
new_val = val & ~(MV88E6390_PCS_CONTROL_1_RESET |
MV88E6390_PCS_CONTROL_1_LOOPBACK |
MV88E6390_PCS_CONTROL_1_PDOWN);
@ -458,9 +379,9 @@ static int mv88e6390_serdes_power_10g(struct mv88e6xxx_chip *chip, u8 lane,
return err;
}
/* Set the power on/off for SGMII and 1000Base-X */
/* Set power up/down for SGMII and 1000Base-X */
static int mv88e6390_serdes_power_sgmii(struct mv88e6xxx_chip *chip, u8 lane,
bool on)
bool up)
{
u16 val, new_val;
int err;
@ -470,7 +391,7 @@ static int mv88e6390_serdes_power_sgmii(struct mv88e6xxx_chip *chip, u8 lane,
if (err)
return err;
if (on)
if (up)
new_val = val & ~(MV88E6390_SGMII_CONTROL_RESET |
MV88E6390_SGMII_CONTROL_LOOPBACK |
MV88E6390_SGMII_CONTROL_PDOWN);
@ -484,27 +405,19 @@ static int mv88e6390_serdes_power_sgmii(struct mv88e6xxx_chip *chip, u8 lane,
return err;
}
int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool up)
{
u8 cmode = chip->ports[port].cmode;
u8 lane;
int err;
err = mv88e6xxx_serdes_get_lane(chip, port, &lane);
if (err) {
if (err == -ENODEV)
err = 0;
return err;
}
switch (cmode) {
case MV88E6XXX_PORT_STS_CMODE_SGMII:
case MV88E6XXX_PORT_STS_CMODE_1000BASEX:
case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
return mv88e6390_serdes_power_sgmii(chip, lane, on);
return mv88e6390_serdes_power_sgmii(chip, lane, up);
case MV88E6XXX_PORT_STS_CMODE_XAUI:
case MV88E6XXX_PORT_STS_CMODE_RXAUI:
return mv88e6390_serdes_power_10g(chip, lane, on);
return mv88e6390_serdes_power_10g(chip, lane, up);
}
return 0;
@ -578,51 +491,31 @@ static void mv88e6390_serdes_irq_link_sgmii(struct mv88e6xxx_chip *chip,
}
static int mv88e6390_serdes_irq_enable_sgmii(struct mv88e6xxx_chip *chip,
u8 lane)
u8 lane, bool enable)
{
u16 val = 0;
if (enable)
val |= MV88E6390_SGMII_INT_LINK_DOWN |
MV88E6390_SGMII_INT_LINK_UP;
return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
MV88E6390_SGMII_INT_ENABLE,
MV88E6390_SGMII_INT_LINK_DOWN |
MV88E6390_SGMII_INT_LINK_UP);
MV88E6390_SGMII_INT_ENABLE, val);
}
static int mv88e6390_serdes_irq_disable_sgmii(struct mv88e6xxx_chip *chip,
u8 lane)
{
return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
MV88E6390_SGMII_INT_ENABLE, 0);
}
int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port,
u8 lane)
int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool enable)
{
u8 cmode = chip->ports[port].cmode;
int err = 0;
switch (cmode) {
case MV88E6XXX_PORT_STS_CMODE_SGMII:
case MV88E6XXX_PORT_STS_CMODE_1000BASEX:
case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
err = mv88e6390_serdes_irq_enable_sgmii(chip, lane);
return mv88e6390_serdes_irq_enable_sgmii(chip, lane, enable);
}
return err;
}
int mv88e6390_serdes_irq_disable(struct mv88e6xxx_chip *chip, int port,
u8 lane)
{
u8 cmode = chip->ports[port].cmode;
int err = 0;
switch (cmode) {
case MV88E6XXX_PORT_STS_CMODE_SGMII:
case MV88E6XXX_PORT_STS_CMODE_1000BASEX:
case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
err = mv88e6390_serdes_irq_disable_sgmii(chip, lane);
}
return err;
return 0;
}
static int mv88e6390_serdes_irq_status_sgmii(struct mv88e6xxx_chip *chip,
@ -636,21 +529,13 @@ static int mv88e6390_serdes_irq_status_sgmii(struct mv88e6xxx_chip *chip,
return err;
}
static irqreturn_t mv88e6390_serdes_thread_fn(int irq, void *dev_id)
irqreturn_t mv88e6390_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
u8 lane)
{
struct mv88e6xxx_port *port = dev_id;
struct mv88e6xxx_chip *chip = port->chip;
u8 cmode = chip->ports[port].cmode;
irqreturn_t ret = IRQ_NONE;
u8 cmode = port->cmode;
u16 status;
int err;
u8 lane;
mv88e6xxx_reg_lock(chip);
err = mv88e6xxx_serdes_get_lane(chip, port->port, &lane);
if (err)
goto out;
switch (cmode) {
case MV88E6XXX_PORT_STS_CMODE_SGMII:
@ -658,79 +543,18 @@ static irqreturn_t mv88e6390_serdes_thread_fn(int irq, void *dev_id)
case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
err = mv88e6390_serdes_irq_status_sgmii(chip, lane, &status);
if (err)
goto out;
return ret;
if (status & (MV88E6390_SGMII_INT_LINK_DOWN |
MV88E6390_SGMII_INT_LINK_UP)) {
ret = IRQ_HANDLED;
mv88e6390_serdes_irq_link_sgmii(chip, port->port, lane);
mv88e6390_serdes_irq_link_sgmii(chip, port, lane);
}
}
out:
mv88e6xxx_reg_unlock(chip);
return ret;
}
int mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
unsigned int mv88e6390_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
{
int err;
u8 lane;
err = mv88e6xxx_serdes_get_lane(chip, port, &lane);
if (err) {
if (err == -ENODEV)
err = 0;
return err;
}
chip->ports[port].serdes_irq = irq_find_mapping(chip->g2_irq.domain,
port);
if (chip->ports[port].serdes_irq < 0) {
dev_err(chip->dev, "Unable to map SERDES irq: %d\n",
chip->ports[port].serdes_irq);
return chip->ports[port].serdes_irq;
}
/* Requesting the IRQ will trigger irq callbacks. So we cannot
* hold the reg_lock.
*/
mv88e6xxx_reg_unlock(chip);
err = request_threaded_irq(chip->ports[port].serdes_irq, NULL,
mv88e6390_serdes_thread_fn,
IRQF_ONESHOT, "mv88e6xxx-serdes",
&chip->ports[port]);
mv88e6xxx_reg_lock(chip);
if (err) {
dev_err(chip->dev, "Unable to request SERDES interrupt: %d\n",
err);
return err;
}
return mv88e6390_serdes_irq_enable(chip, port, lane);
}
void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
{
int err;
u8 lane;
err = mv88e6xxx_serdes_get_lane(chip, port, &lane);
if (err) {
if (err != -ENODEV)
dev_err(chip->dev, "Unable to free SERDES irq: %d\n",
err);
return;
}
mv88e6390_serdes_irq_disable(chip, port, lane);
/* Freeing the IRQ will trigger irq callbacks. So we cannot
* hold the reg_lock.
*/
mv88e6xxx_reg_unlock(chip);
free_irq(chip->ports[port].serdes_irq, &chip->ports[port]);
mv88e6xxx_reg_lock(chip);
chip->ports[port].serdes_irq = 0;
return irq_find_mapping(chip->g2_irq.domain, port);
}

109
drivers/net/dsa/mv88e6xxx/serdes.h
View File

@ -74,37 +74,94 @@
#define MV88E6390_SGMII_PHY_STATUS_SPD_DPL_VALID BIT(11)
#define MV88E6390_SGMII_PHY_STATUS_LINK BIT(10)
/* Put the SERDES lane address a port is using into *lane. If a port has
* multiple lanes, should put the first lane the port is using. If a port does
* not have a lane, return -ENODEV.
*/
static inline int mv88e6xxx_serdes_get_lane(struct mv88e6xxx_chip *chip,
int port, u8 *lane)
{
if (!chip->info->ops->serdes_get_lane)
return -EOPNOTSUPP;
return chip->info->ops->serdes_get_lane(chip, port, lane);
}
int mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port, u8 *lane);
int mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port, u8 *lane);
int mv88e6390x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port, u8 *lane);
int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on);
int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on);
int mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port);
void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port);
u8 mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
u8 mv88e6352_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
u8 mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
u8 mv88e6390x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip,
int port);
unsigned int mv88e6390_serdes_irq_mapping(struct mv88e6xxx_chip *chip,
int port);
int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool on);
int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool on);
int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool enable);
int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool enable);
irqreturn_t mv88e6352_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
u8 lane);
irqreturn_t mv88e6390_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
u8 lane);
int mv88e6352_serdes_get_sset_count(struct mv88e6xxx_chip *chip, int port);
int mv88e6352_serdes_get_strings(struct mv88e6xxx_chip *chip,
int port, uint8_t *data);
int mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
uint64_t *data);
int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port,
u8 lane);
int mv88e6390_serdes_irq_disable(struct mv88e6xxx_chip *chip, int port,
u8 lane);
int mv88e6352_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port);
void mv88e6352_serdes_irq_free(struct mv88e6xxx_chip *chip, int port);
/* Return the (first) SERDES lane address a port is using, 0 otherwise. */
static inline u8 mv88e6xxx_serdes_get_lane(struct mv88e6xxx_chip *chip,
int port)
{
if (!chip->info->ops->serdes_get_lane)
return 0;
return chip->info->ops->serdes_get_lane(chip, port);
}
static inline int mv88e6xxx_serdes_power_up(struct mv88e6xxx_chip *chip,
int port, u8 lane)
{
if (!chip->info->ops->serdes_power)
return -EOPNOTSUPP;
return chip->info->ops->serdes_power(chip, port, lane, true);
}
static inline int mv88e6xxx_serdes_power_down(struct mv88e6xxx_chip *chip,
int port, u8 lane)
{
if (!chip->info->ops->serdes_power)
return -EOPNOTSUPP;
return chip->info->ops->serdes_power(chip, port, lane, false);
}
static inline unsigned int
mv88e6xxx_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
{
if (!chip->info->ops->serdes_irq_mapping)
return 0;
return chip->info->ops->serdes_irq_mapping(chip, port);
}
static inline int mv88e6xxx_serdes_irq_enable(struct mv88e6xxx_chip *chip,
int port, u8 lane)
{
if (!chip->info->ops->serdes_irq_enable)
return -EOPNOTSUPP;
return chip->info->ops->serdes_irq_enable(chip, port, lane, true);
}
static inline int mv88e6xxx_serdes_irq_disable(struct mv88e6xxx_chip *chip,
int port, u8 lane)
{
if (!chip->info->ops->serdes_irq_enable)
return -EOPNOTSUPP;
return chip->info->ops->serdes_irq_enable(chip, port, lane, false);
}
static inline irqreturn_t
mv88e6xxx_serdes_irq_status(struct mv88e6xxx_chip *chip, int port, u8 lane)
{
if (!chip->info->ops->serdes_irq_status)
return IRQ_NONE;
return chip->info->ops->serdes_irq_status(chip, port, lane);
}
#endif