[dpdk-dev,15/39] event/octeontx: add support dequeue timeout tick conversion
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Commit Message
SSO co-processor runs at a different frequency than core clock.
Request PF to convert the ns to SSO get_work timeout period.
On dequeue, If device is configured with
RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT configuration then
use different fast path dequeue handler to wait till requested
amount of nanosecond if the event is not available.
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
---
drivers/event/octeontx/ssovf_evdev.c | 38 ++++++++++++++++++++++++++++++++++++
drivers/event/octeontx/ssovf_evdev.h | 1 +
2 files changed, 39 insertions(+)
Comments
> -----Original Message-----
> From: Jerin Jacob [mailto:jerin.jacob@caviumnetworks.com]
> Sent: Friday, March 3, 2017 11:28 AM
> To: dev@dpdk.org
> Cc: thomas.monjalon@6wind.com; Richardson, Bruce
> <bruce.richardson@intel.com>; Van Haaren, Harry
> <harry.van.haaren@intel.com>; hemant.agrawal@nxp.com; Eads, Gage
> <gage.eads@intel.com>; nipun.gupta@nxp.com;
> santosh.shukla@caviumnetworks.com; Jerin Jacob
> <jerin.jacob@caviumnetworks.com>
> Subject: [dpdk-dev] [PATCH 15/39] event/octeontx: add support dequeue
> timeout tick conversion
>
> SSO co-processor runs at a different frequency than core clock.
> Request PF to convert the ns to SSO get_work timeout period.
> On dequeue, If device is configured with
> RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT configuration then use
> different fast path dequeue handler to wait till requested amount of
> nanosecond if the event is not available.
>
> Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
> Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Acked-by: Gage Eads <gage.eads@intel.com>
@@ -119,6 +119,35 @@ ssovf_mbox_priority_set(uint8_t queue, uint8_t prio)
return ret;
}
+struct ssovf_mbox_convert_ns_getworks_iter {
+ uint64_t wait_ns;
+ uint32_t getwork_iter;/* Get_work iterations for the given wait_ns */
+};
+
+static int
+ssovf_mbox_timeout_ticks(uint64_t ns, uint64_t *tmo_ticks)
+{
+ struct octeontx_mbox_hdr hdr = {0};
+ struct ssovf_mbox_convert_ns_getworks_iter ns2iter;
+ uint16_t len = sizeof(ns2iter);
+ int ret;
+
+ hdr.coproc = SSO_COPROC;
+ hdr.msg = SSO_CONVERT_NS_GETWORK_ITER;
+ hdr.vfid = 0;
+
+ memset(&ns2iter, 0, len);
+ ns2iter.wait_ns = ns;
+ ret = octeontx_ssovf_mbox_send(&hdr, &ns2iter, len, &ns2iter, len);
+ if (ret < 0 || (ret != len)) {
+ ssovf_log_err("Failed to get tmo ticks ns=%"PRId64"", ns);
+ return -EIO;
+ }
+
+ *tmo_ticks = ns2iter.getwork_iter;
+ return 0;
+}
+
static void
ssovf_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *dev_info)
{
@@ -295,6 +324,14 @@ ssovf_port_unlink(struct rte_eventdev *dev, void *port, uint8_t queues[],
return (int)nb_unlinks;
}
+static int
+ssovf_timeout_ticks(struct rte_eventdev *dev, uint64_t ns, uint64_t *tmo_ticks)
+{
+ RTE_SET_USED(dev);
+
+ return ssovf_mbox_timeout_ticks(ns, tmo_ticks);
+}
+
/* Initialize and register event driver with DPDK Application */
static const struct rte_eventdev_ops ssovf_ops = {
.dev_infos_get = ssovf_info_get,
@@ -307,6 +344,7 @@ static const struct rte_eventdev_ops ssovf_ops = {
.port_release = ssovf_port_release,
.port_link = ssovf_port_link,
.port_unlink = ssovf_port_unlink,
+ .timeout_ticks = ssovf_timeout_ticks,
};
static int
@@ -117,6 +117,7 @@
#define SSO_GET_DEV_INFO 0x3
#define SSO_GET_GETWORK_WAIT 0x4
#define SSO_SET_GETWORK_WAIT 0x5
+#define SSO_CONVERT_NS_GETWORK_ITER 0x6
#define SSO_GRP_GET_PRIORITY 0x7
#define SSO_GRP_SET_PRIORITY 0x8