LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Felipe Balbi <felipe.balbi@linux.intel.com>
To: Richard Cochran <richardcochran@gmail.com>
Cc: netdev@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	"H . Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	"Christopher S . Hall" <christopher.s.hall@intel.com>,
	Felipe Balbi <felipe.balbi@linux.intel.com>
Subject: [RFC PATCH 3/5] PTP: implement PTP_EVENT_COUNT_TSTAMP ioctl
Date: Tue, 16 Jul 2019 10:20:36 +0300	[thread overview]
Message-ID: <20190716072038.8408-4-felipe.balbi@linux.intel.com> (raw)
In-Reply-To: <20190716072038.8408-1-felipe.balbi@linux.intel.com>

With this, we can request the underlying driver to count the number of
events that have been captured.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
---
 drivers/ptp/ptp_chardev.c      | 15 +++++++++++++++
 include/uapi/linux/ptp_clock.h |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c
index 18ffe449efdf..a3e163a6acdc 100644
--- a/drivers/ptp/ptp_chardev.c
+++ b/drivers/ptp/ptp_chardev.c
@@ -114,6 +114,7 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg)
 	struct system_device_crosststamp xtstamp;
 	struct ptp_clock_info *ops = ptp->info;
 	struct ptp_sys_offset *sysoff = NULL;
+	struct ptp_event_count_tstamp counttstamp;
 	struct ptp_system_timestamp sts;
 	struct ptp_clock_request req;
 	struct ptp_clock_caps caps;
@@ -301,6 +302,20 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg)
 		mutex_unlock(&ptp->pincfg_mux);
 		break;
 
+	case PTP_EVENT_COUNT_TSTAMP:
+		if (!ops->counttstamp)
+			return -ENOTSUPP;
+		if (copy_from_user(&req.perout, (void __user *)arg,
+				   sizeof(counttstamp))) {
+			err = -EFAULT;
+			break;
+		}
+		err = ops->counttstamp(ops, &counttstamp);
+		if (!err && copy_to_user((void __user *)arg, &counttstamp,
+						sizeof(counttstamp)))
+			err = -EFAULT;
+		break;
+
 	default:
 		err = -ENOTTY;
 		break;
diff --git a/include/uapi/linux/ptp_clock.h b/include/uapi/linux/ptp_clock.h
index 1bc794ad957a..674db7de64f3 100644
--- a/include/uapi/linux/ptp_clock.h
+++ b/include/uapi/linux/ptp_clock.h
@@ -148,6 +148,8 @@ struct ptp_pin_desc {
 	_IOWR(PTP_CLK_MAGIC, 8, struct ptp_sys_offset_precise)
 #define PTP_SYS_OFFSET_EXTENDED \
 	_IOWR(PTP_CLK_MAGIC, 9, struct ptp_sys_offset_extended)
+#define PTP_EVENT_COUNT_TSTAMP \
+	_IOWR(PTP_CLK_MAGIC, 6, struct ptp_event_count_tstamp)
 
 struct ptp_extts_event {
 	struct ptp_clock_time t; /* Time event occured. */
-- 
2.22.0


  parent reply	other threads:[~2019-07-16  7:21 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-16  7:20 [RFC PATCH 0/5] PTP: add support for Intel's TGPIO controller Felipe Balbi
2019-07-16  7:20 ` [RFC PATCH 1/5] x86: tsc: add tsc to art helpers Felipe Balbi
2019-07-16  7:57   ` Thomas Gleixner
2019-08-15  5:57     ` Felipe Balbi
2019-08-15 14:16       ` Thomas Gleixner
2019-10-01 10:24         ` Felipe Balbi
2019-10-17 11:15           ` Thomas Gleixner
2019-10-17 12:01             ` Felipe Balbi
2019-07-16  7:20 ` [RFC PATCH 2/5] PTP: add a callback for counting timestamp events Felipe Balbi
2019-07-16  7:20 ` Felipe Balbi [this message]
2019-07-16  7:20 ` [RFC PATCH 4/5] PTP: Add flag for non-periodic output Felipe Balbi
2019-07-16 16:39   ` Richard Cochran
2019-07-17  6:49     ` Felipe Balbi
2019-07-17 17:36       ` Richard Cochran
2019-07-18  8:59         ` Felipe Balbi
2019-07-18 16:41           ` Richard Cochran
2019-08-13  7:53             ` Felipe Balbi
2019-08-13 17:48               ` Richard Cochran
2019-08-13 18:06                 ` Richard Cochran
2019-08-14  7:05                   ` Felipe Balbi
2019-07-16  7:20 ` [RFC PATCH 5/5] PTP: Add support for Intel PMC Timed GPIO Controller Felipe Balbi
2019-07-16 19:14   ` Shannon Nelson
2019-07-17  6:51     ` Felipe Balbi
2019-07-16 16:41 ` [RFC PATCH 0/5] PTP: add support for Intel's TGPIO controller Richard Cochran
2019-07-17  6:52   ` Felipe Balbi
2019-07-17 17:39     ` Richard Cochran
2019-07-18  8:58       ` Felipe Balbi
2019-07-18 19:50 ` Andrew Lunn
2019-07-19  7:35   ` Felipe Balbi
2019-07-19 13:20     ` Andrew Lunn
2019-08-13  7:50       ` Felipe Balbi
2019-08-13 17:49         ` Richard Cochran

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190716072038.8408-4-felipe.balbi@linux.intel.com \
    --to=felipe.balbi@linux.intel.com \
    --cc=bp@alien8.de \
    --cc=christopher.s.hall@intel.com \
    --cc=hpa@zytor.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=netdev@vger.kernel.org \
    --cc=richardcochran@gmail.com \
    --cc=tglx@linutronix.de \
    --cc=x86@kernel.org \
    --subject='Re: [RFC PATCH 3/5] PTP: implement PTP_EVENT_COUNT_TSTAMP ioctl' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).