diff options
| author | Roy Pledge <roy.pledge@nxp.com> | 2019-08-01 23:16:57 +0300 |
|---|---|---|
| committer | Li Yang <leoyang.li@nxp.com> | 2019-08-16 00:41:47 +0300 |
| commit | c5501aa92a881e599e1dc80f387d27763d07f67c (patch) | |
| tree | b63ad6e714f67ba0d1162c1c8907a526adce64d9 /drivers/soc/fsl/qbman/qman_portal.c | |
| parent | 0505d00c8dbaf06cb71e7a16818313ce1959e6d7 (diff) | |
| download | linux-c5501aa92a881e599e1dc80f387d27763d07f67c.tar.xz | |
soc/fsl/qbman: Cleanup QMan queues if device was already initialized
If the QMan device was previously initialized make sure all the
frame queues are out of service once all the portals are probed.
This handles the case where the kernel is restarted without the
SoC being reset (kexec for example)
Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Diffstat (limited to 'drivers/soc/fsl/qbman/qman_portal.c')
| -rw-r--r-- | drivers/soc/fsl/qbman/qman_portal.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index 991c35a72e00..5685b6706893 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -233,7 +233,7 @@ static int qman_portal_probe(struct platform_device *pdev) struct device_node *node = dev->of_node; struct qm_portal_config *pcfg; struct resource *addr_phys[2]; - int irq, cpu, err; + int irq, cpu, err, i; u32 val; err = qman_is_probed(); @@ -323,6 +323,22 @@ static int qman_portal_probe(struct platform_device *pdev) if (!cpu_online(cpu)) qman_offline_cpu(cpu); + if (__qman_portals_probed == 1 && qman_requires_cleanup()) { + /* + * QMan wasn't reset prior to boot (Kexec for example) + * Empty all the frame queues so they are in reset state + */ + for (i = 0; i < qm_get_fqid_maxcnt(); i++) { + err = qman_shutdown_fq(i); + if (err) { + dev_err(dev, "Failed to shutdown frame queue %d\n", + i); + goto err_portal_init; + } + } + qman_done_cleanup(); + } + return 0; err_portal_init: |