mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 09:12:39 +00:00
72 lines
2.5 KiB
Diff
72 lines
2.5 KiB
Diff
|
From d43acc10c25f01a461a1cb1c1fd0cc72cd29dd42 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
|
||
|
|
Date: Thu, 2 Aug 2018 16:14:12 +0300
|
||
|
|
Subject: [PATCH] soc/fsl/qbman_portals: add APIs to retrieve the probing
|
||
|
|
status
|
||
|
|
|
||
|
|
Add a couple of new APIs to check the probing status of the required
|
||
|
|
cpu bound qman and bman portals:
|
||
|
|
'int bman_portals_probed()' and 'int qman_portals_probed()'.
|
||
|
|
They return the following values.
|
||
|
|
* 1 if qman/bman portals were all probed correctly
|
||
|
|
* 0 if qman/bman portals were not yet probed
|
||
|
|
* -1 if probing of qman/bman portals failed
|
||
|
|
Portals are considered successful probed if no error occurred during
|
||
|
|
the probing of any of the portals and if enough portals were probed
|
||
|
|
to have one available for each cpu.
|
||
|
|
The error handling paths were slightly rearranged in order to fit this
|
||
|
|
new functionality without being too intrusive.
|
||
|
|
Drivers that use qman/bman portal driver services are required to use
|
||
|
|
these APIs before calling any functions exported by these drivers or
|
||
|
|
otherwise they will crash the kernel.
|
||
|
|
First user will be the dpaa1 ethernet driver, coming in a subsequent
|
||
|
|
patch.
|
||
|
|
|
||
|
|
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
|
||
|
|
---
|
||
|
|
drivers/soc/fsl/qbman/bman_portal.c | 3 +++
|
||
|
|
drivers/soc/fsl/qbman/qman_portal.c | 3 +++
|
||
|
|
include/soc/fsl/qman.h | 9 +++++++++
|
||
|
|
3 files changed, 15 insertions(+)
|
||
|
|
|
||
|
|
--- a/drivers/soc/fsl/qbman/bman_portal.c
|
||
|
|
+++ b/drivers/soc/fsl/qbman/bman_portal.c
|
||
|
|
@@ -164,6 +164,9 @@ static int bman_portal_probe(struct plat
|
||
|
|
}
|
||
|
|
|
||
|
|
cpumask_set_cpu(cpu, &portal_cpus);
|
||
|
|
+ if (!__bman_portals_probed &&
|
||
|
|
+ cpumask_weight(&portal_cpus) == num_online_cpus())
|
||
|
|
+ __bman_portals_probed = 1;
|
||
|
|
spin_unlock(&bman_lock);
|
||
|
|
pcfg->cpu = cpu;
|
||
|
|
|
||
|
|
--- a/drivers/soc/fsl/qbman/qman_portal.c
|
||
|
|
+++ b/drivers/soc/fsl/qbman/qman_portal.c
|
||
|
|
@@ -323,6 +323,9 @@ static int qman_portal_probe(struct plat
|
||
|
|
}
|
||
|
|
|
||
|
|
cpumask_set_cpu(cpu, &portal_cpus);
|
||
|
|
+ if (!__qman_portals_probed &&
|
||
|
|
+ cpumask_weight(&portal_cpus) == num_online_cpus())
|
||
|
|
+ __qman_portals_probed = 1;
|
||
|
|
spin_unlock(&qman_lock);
|
||
|
|
pcfg->cpu = cpu;
|
||
|
|
|
||
|
|
--- a/include/soc/fsl/qman.h
|
||
|
|
+++ b/include/soc/fsl/qman.h
|
||
|
|
@@ -1235,4 +1235,13 @@ void qman_portal_get_iperiod(struct qman
|
||
|
|
*/
|
||
|
|
int qman_portal_set_iperiod(struct qman_portal *portal, u32 iperiod);
|
||
|
|
|
||
|
|
+/**
|
||
|
|
+ * qman_portals_probed - Check if all cpu bound qman portals are probed
|
||
|
|
+ *
|
||
|
|
+ * Returns 1 if all the required cpu bound qman portals successfully probed,
|
||
|
|
+ * -1 if probe errors appeared or 0 if the qman portals did not yet finished
|
||
|
|
+ * probing.
|
||
|
|
+ */
|
||
|
|
+int qman_portals_probed(void);
|
||
|
|
+
|
||
|
|
#endif /* __FSL_QMAN_H */
|