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[184.163.105.249]) by smtp.gmail.com with ESMTPSA id 20sm4914185qkg.59.2019.08.31.13.19.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 31 Aug 2019 13:19:08 -0700 (PDT) From: Vivien Didelot To: netdev@vger.kernel.org Cc: davem@davemloft.net, =?UTF-8?q?Marek=20Beh=C3=BAn?= , f.fainelli@gmail.com, andrew@lunn.ch, Vivien Didelot Subject: [PATCH net-next 10/10] net: dsa: mv88e6xxx: centralize SERDES IRQ handling Date: Sat, 31 Aug 2019 16:18:36 -0400 Message-Id: <20190831201836.19957-11-vivien.didelot@gmail.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190831201836.19957-1-vivien.didelot@gmail.com> References: <20190831201836.19957-1-vivien.didelot@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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 --- 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