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event/octeontx2: add devargs to force legacy mode

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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@marvell.com>
This commit is contained in:
Pavan Nikhilesh 2019-06-28 23:53:32 +05:30 committed by Jerin Jacob
parent 54c5d3c24d
commit 09d5c0f356
3 changed files with 25 additions and 2 deletions
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8
doc/guides/eventdevs/octeontx2.rst
View File

@ -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
~~~~~~~~~~~~~~~~~

8
drivers/event/octeontx2/otx2_evdev.c
View File

@ -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");

11
drivers/event/octeontx2/otx2_evdev.h
View File

@ -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)
{