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Date: Sat, 31 Aug 2019 16:18:36 -0400
From: Vivien Didelot <vivien.didelot@...il.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
Marek Behún <marek.behun@....cz>,
f.fainelli@...il.com, andrew@...n.ch,
Vivien Didelot <vivien.didelot@...il.com>
Subject: [PATCH net-next 10/10] net: dsa: mv88e6xxx: centralize SERDES IRQ handling
The .serdes_irq_setup are all following the same steps: get the SERDES
lane, get the IRQ mapping, request the IRQ, then enable it. So do
the .serdes_irq_free implementations: get the SERDES lane, disable
the IRQ, then free it.
This patch removes these operations in favor of generic functions.
Signed-off-by: Vivien Didelot <vivien.didelot@...il.com>
---
drivers/net/dsa/mv88e6xxx/chip.c | 96 +++++++++++++------
drivers/net/dsa/mv88e6xxx/chip.h | 2 -
drivers/net/dsa/mv88e6xxx/serdes.c | 142 -----------------------------
drivers/net/dsa/mv88e6xxx/serdes.h | 4 -
4 files changed, 69 insertions(+), 175 deletions(-)
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index c2061e20bb32..30365a54c31b 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2054,6 +2054,71 @@ 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)
{
@@ -2069,12 +2134,11 @@ static int mv88e6xxx_serdes_power(struct mv88e6xxx_chip *chip, int port,
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 = mv88e6xxx_serdes_power_down(chip, port, lane);
}
@@ -2936,8 +3000,6 @@ static const struct mv88e6xxx_ops mv88e6141_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6341_phylink_validate,
};
@@ -3188,8 +3250,6 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
.serdes_irq_enable = mv88e6352_serdes_irq_enable,
.serdes_irq_status = mv88e6352_serdes_irq_status,
- .serdes_irq_setup = mv88e6352_serdes_irq_setup,
- .serdes_irq_free = mv88e6352_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6352_phylink_validate,
};
@@ -3274,8 +3334,6 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6390_phylink_validate,
};
@@ -3324,8 +3382,6 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6390x_phylink_validate,
};
@@ -3374,8 +3430,6 @@ static const struct mv88e6xxx_ops mv88e6191_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
.phylink_validate = mv88e6390_phylink_validate,
@@ -3426,8 +3480,6 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
.serdes_irq_enable = mv88e6352_serdes_irq_enable,
.serdes_irq_status = mv88e6352_serdes_irq_status,
- .serdes_irq_setup = mv88e6352_serdes_irq_setup,
- .serdes_irq_free = mv88e6352_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6352_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3518,8 +3570,6 @@ static const struct mv88e6xxx_ops mv88e6290_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3658,8 +3708,6 @@ static const struct mv88e6xxx_ops mv88e6341_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3793,8 +3841,6 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
.serdes_irq_enable = mv88e6352_serdes_irq_enable,
.serdes_irq_status = mv88e6352_serdes_irq_status,
- .serdes_irq_setup = mv88e6352_serdes_irq_setup,
- .serdes_irq_free = mv88e6352_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6352_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3850,8 +3896,6 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3904,8 +3948,6 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index 9a73fd1d643b..6bc0a4e4fe7b 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -450,8 +450,6 @@ struct mv88e6xxx_ops {
/* SERDES interrupt handling */
unsigned int (*serdes_irq_mapping)(struct mv88e6xxx_chip *chip,
int port);
- int (*serdes_irq_setup)(struct mv88e6xxx_chip *chip, int port);
- void (*serdes_irq_free)(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,
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
index d37419ba26ab..902feb398746 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.c
+++ b/drivers/net/dsa/mv88e6xxx/serdes.c
@@ -221,19 +221,6 @@ irqreturn_t mv88e6352_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
return ret;
}
-static irqreturn_t mv88e6352_serdes_thread_fn(int irq, void *dev_id)
-{
- struct mv88e6xxx_port *port = dev_id;
- struct mv88e6xxx_chip *chip = port->chip;
- irqreturn_t ret = IRQ_NONE;
-
- mv88e6xxx_reg_lock(chip);
- ret = mv88e6xxx_serdes_irq_status(chip, port->port, 0);
- mv88e6xxx_reg_unlock(chip);
-
- return ret;
-}
-
int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool enable)
{
@@ -250,61 +237,6 @@ unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
return irq_find_mapping(chip->g2_irq.domain, MV88E6352_SERDES_IRQ);
}
-int mv88e6352_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
-{
- unsigned int irq;
- u8 lane;
- int err;
-
- lane = mv88e6xxx_serdes_get_lane(chip, port);
- if (!lane)
- return 0;
-
- irq = mv88e6xxx_serdes_irq_mapping(chip, port);
- if (!irq)
- return 0;
-
- chip->ports[port].serdes_irq = 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 mv88e6xxx_serdes_irq_enable(chip, port, lane);
-}
-
-void mv88e6352_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
-{
- u8 lane;
-
- lane = mv88e6xxx_serdes_get_lane(chip, port);
- if (!lane)
- return;
-
- mv88e6xxx_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;
-}
-
u8 mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
{
u8 cmode = chip->ports[port].cmode;
@@ -622,81 +554,7 @@ irqreturn_t mv88e6390_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
return ret;
}
-static irqreturn_t mv88e6390_serdes_thread_fn(int irq, void *dev_id)
-{
- struct mv88e6xxx_port *port = dev_id;
- struct mv88e6xxx_chip *chip = port->chip;
- irqreturn_t ret = IRQ_NONE;
- u8 lane;
-
- mv88e6xxx_reg_lock(chip);
- lane = mv88e6xxx_serdes_get_lane(chip, port->port);
- if (!lane)
- goto out;
-
- ret = mv88e6xxx_serdes_irq_status(chip, port->port, lane);
-out:
- mv88e6xxx_reg_unlock(chip);
-
- return ret;
-}
-
unsigned int mv88e6390_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
{
return irq_find_mapping(chip->g2_irq.domain, port);
}
-
-int mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
-{
- unsigned int irq;
- int err;
- u8 lane;
-
- lane = mv88e6xxx_serdes_get_lane(chip, port);
- if (!lane)
- return 0;
-
- irq = mv88e6xxx_serdes_irq_mapping(chip, port);
- if (!irq)
- return 0;
-
- chip->ports[port].serdes_irq = 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 mv88e6xxx_serdes_irq_enable(chip, port, lane);
-}
-
-void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
-{
- u8 lane;
-
- lane = mv88e6xxx_serdes_get_lane(chip, port);
- if (!lane)
- return;
-
- mv88e6xxx_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;
-}
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.h b/drivers/net/dsa/mv88e6xxx/serdes.h
index 52f937347a36..bd8df36ab537 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.h
+++ b/drivers/net/dsa/mv88e6xxx/serdes.h
@@ -86,8 +86,6 @@ 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 mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port);
-void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port);
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,
@@ -101,8 +99,6 @@ 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 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,
--
2.23.0
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