From: Andrew Lunn <andrew@lunn.ch>
To: Yangbo Lu <yangbo.lu@nxp.com>
Cc: netdev@vger.kernel.org,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>,
"David S . Miller" <davem@davemloft.net>,
Vladimir Oltean <vladimir.oltean@nxp.com>,
Claudiu Manoil <claudiu.manoil@nxp.com>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Richard Cochran <richardcochran@gmail.com>
Subject: Re: [PATCH 5/5] net: dsa: ocelot: add hardware timestamping support for Felix
Date: Thu, 21 Nov 2019 03:56:10 +0100 [thread overview]
Message-ID: <20191121025610.GO18325@lunn.ch> (raw)
In-Reply-To: <20191120082318.3909-6-yangbo.lu@nxp.com>
> +static irqreturn_t felix_irq_handler(int irq, void *data)
> +{
> + struct ocelot *ocelot = (struct ocelot *)data;
> +
> + /* The INTB interrupt is used for both PTP TX timestamp interrupt
> + * and preemption status change interrupt on each port.
> + *
> + * - Get txtstamp if have
> + * - TODO: handle preemption. Without handling it, driver may get
> + * interrupt storm.
> + */
I assume there are no register bits to enable/disable these two
interrupt sources?
What is preemption?
Andrew
next prev parent reply other threads:[~2019-11-21 2:56 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-20 8:23 [PATCH 0/5] Support PTP clock and hardware timestamping for DSA Felix driver Yangbo Lu
2019-11-20 8:23 ` [PATCH 1/5] net: mscc: ocelot: export ocelot_hwstamp_get/set functions Yangbo Lu
2019-11-21 2:40 ` Andrew Lunn
2019-11-21 4:03 ` Florian Fainelli
2019-11-20 8:23 ` [PATCH 2/5] net: mscc: ocelot: convert to use ocelot_get_txtstamp() Yangbo Lu
2019-11-21 2:41 ` Andrew Lunn
2019-11-21 4:04 ` Florian Fainelli
2019-11-20 8:23 ` [PATCH 3/5] net: mscc: ocelot: convert to use ocelot_port_add_txtstamp_skb() Yangbo Lu
2019-11-21 2:43 ` Andrew Lunn
2019-11-21 4:04 ` Florian Fainelli
2019-11-20 8:23 ` [PATCH 4/5] net: dsa: ocelot: define PTP registers for felix_vsc9959 Yangbo Lu
2019-11-21 2:49 ` Andrew Lunn
2019-11-21 3:20 ` Y.b. Lu
2019-11-21 4:04 ` Florian Fainelli
2019-11-20 8:23 ` [PATCH 5/5] net: dsa: ocelot: add hardware timestamping support for Felix Yangbo Lu
2019-11-21 2:56 ` Andrew Lunn [this message]
2019-11-21 3:29 ` Y.b. Lu
2019-11-21 22:39 ` [PATCH 0/5] Support PTP clock and hardware timestamping for DSA Felix driver David Miller
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