[dpdk-dev] [PATCH v3 21/42] event/octeontx2: add devargs to force legacy mode
pbhagavatula at marvell.com
pbhagavatula at marvell.com
Fri Jun 28 20:23:32 CEST 2019
From: Pavan Nikhilesh <pbhagavatula at marvell.com>
Octeontx2 SSO by default is set to use dual workslot mode.
Add devargs option to force legacy mode i.e. single workslot mode.
Example:
--dev "0002:0e:00.0,single_ws=1"
Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
---
doc/guides/eventdevs/octeontx2.rst | 8 ++++++++
drivers/event/octeontx2/otx2_evdev.c | 8 +++++++-
drivers/event/octeontx2/otx2_evdev.h | 11 ++++++++++-
3 files changed, 25 insertions(+), 2 deletions(-)
diff --git a/doc/guides/eventdevs/octeontx2.rst b/doc/guides/eventdevs/octeontx2.rst
index f83cf1e9d..c864f39f9 100644
--- a/doc/guides/eventdevs/octeontx2.rst
+++ b/doc/guides/eventdevs/octeontx2.rst
@@ -58,6 +58,14 @@ Runtime Config Options
--dev "0002:0e:00.0,xae_cnt=16384"
+- ``Force legacy mode``
+
+ The ``single_ws`` devargs parameter is introduced to force legacy mode i.e
+ single workslot mode in SSO and disable the default dual workslot mode.
+ For example::
+
+ --dev "0002:0e:00.0,single_ws=1"
+
Debugging Options
~~~~~~~~~~~~~~~~~
diff --git a/drivers/event/octeontx2/otx2_evdev.c b/drivers/event/octeontx2/otx2_evdev.c
index 16d5e7dfa..5dc39f029 100644
--- a/drivers/event/octeontx2/otx2_evdev.c
+++ b/drivers/event/octeontx2/otx2_evdev.c
@@ -911,11 +911,13 @@ static struct rte_eventdev_ops otx2_sso_ops = {
};
#define OTX2_SSO_XAE_CNT "xae_cnt"
+#define OTX2_SSO_SINGLE_WS "single_ws"
static void
sso_parse_devargs(struct otx2_sso_evdev *dev, struct rte_devargs *devargs)
{
struct rte_kvargs *kvlist;
+ uint8_t single_ws = 0;
if (devargs == NULL)
return;
@@ -925,7 +927,10 @@ sso_parse_devargs(struct otx2_sso_evdev *dev, struct rte_devargs *devargs)
rte_kvargs_process(kvlist, OTX2_SSO_XAE_CNT, &parse_kvargs_value,
&dev->xae_cnt);
+ rte_kvargs_process(kvlist, OTX2_SSO_SINGLE_WS, &parse_kvargs_flag,
+ &single_ws);
+ dev->dual_ws = !single_ws;
rte_kvargs_free(kvlist);
}
@@ -1075,4 +1080,5 @@ otx2_sso_fini(struct rte_eventdev *event_dev)
RTE_PMD_REGISTER_PCI(event_octeontx2, pci_sso);
RTE_PMD_REGISTER_PCI_TABLE(event_octeontx2, pci_sso_map);
RTE_PMD_REGISTER_KMOD_DEP(event_octeontx2, "vfio-pci");
-RTE_PMD_REGISTER_PARAM_STRING(event_octeontx2, OTX2_SSO_XAE_CNT "=<int>");
+RTE_PMD_REGISTER_PARAM_STRING(event_octeontx2, OTX2_SSO_XAE_CNT "=<int>"
+ OTX2_SSO_SINGLE_WS "=1");
diff --git a/drivers/event/octeontx2/otx2_evdev.h b/drivers/event/octeontx2/otx2_evdev.h
index 30b5d2c32..8e614b109 100644
--- a/drivers/event/octeontx2/otx2_evdev.h
+++ b/drivers/event/octeontx2/otx2_evdev.h
@@ -121,8 +121,8 @@ struct otx2_sso_evdev {
uint64_t nb_xaq_cfg;
rte_iova_t fc_iova;
struct rte_mempool *xaq_pool;
- uint8_t dual_ws;
/* Dev args */
+ uint8_t dual_ws;
uint32_t xae_cnt;
/* HW const */
uint32_t xae_waes;
@@ -178,6 +178,15 @@ sso_pmd_priv(const struct rte_eventdev *event_dev)
return event_dev->data->dev_private;
}
+static inline int
+parse_kvargs_flag(const char *key, const char *value, void *opaque)
+{
+ RTE_SET_USED(key);
+
+ *(uint8_t *)opaque = !!atoi(value);
+ return 0;
+}
+
static inline int
parse_kvargs_value(const char *key, const char *value, void *opaque)
{
--
2.22.0
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