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From: <pbhagavatula@marvell.com>
To: <jerinj@marvell.com>, Pavan Nikhilesh <pbhagavatula@marvell.com>, "Shijith
Thotton" <sthotton@marvell.com>
CC: <dev@dpdk.org>
Subject: [PATCH v8 09/22] event/cnxk: add CN20K event port quiesce
Date: Mon, 28 Oct 2024 21:29:10 +0530
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From: Pavan Nikhilesh <pbhagavatula@marvell.com>
Add CN20K event port quiesce function.
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
drivers/event/cnxk/cn20k_eventdev.c | 60 +++++++++++++++++++++++++++++
1 file changed, 60 insertions(+)
diff --git a/drivers/event/cnxk/cn20k_eventdev.c b/drivers/event/cnxk/cn20k_eventdev.c
index d1668a00c1..56e3eb87fb 100644
--- a/drivers/event/cnxk/cn20k_eventdev.c
+++ b/drivers/event/cnxk/cn20k_eventdev.c
@@ -208,6 +208,65 @@ cn20k_sso_port_release(void *port)
rte_free(gws_cookie);
}
+static void
+cn20k_sso_port_quiesce(struct rte_eventdev *event_dev, void *port,
+ rte_eventdev_port_flush_t flush_cb, void *args)
+{
+ struct cnxk_sso_evdev *dev = cnxk_sso_pmd_priv(event_dev);
+ struct cn20k_sso_hws *ws = port;
+ struct rte_event ev;
+ uint64_t ptag;
+ bool is_pend;
+
+ is_pend = false;
+ /* Work in WQE0 is always consumed, unless its a SWTAG. */
+ ptag = plt_read64(ws->base + SSOW_LF_GWS_PENDSTATE);
+ if (ptag & (BIT_ULL(62) | BIT_ULL(54)) || ws->swtag_req)
+ is_pend = true;
+ do {
+ ptag = plt_read64(ws->base + SSOW_LF_GWS_PENDSTATE);
+ } while (ptag & (BIT_ULL(62) | BIT_ULL(58) | BIT_ULL(56) | BIT_ULL(54)));
+
+ cn20k_sso_hws_get_work_empty(ws, &ev, 0);
+ if (is_pend && ev.u64)
+ if (flush_cb)
+ flush_cb(event_dev->data->dev_id, ev, args);
+ ptag = (plt_read64(ws->base + SSOW_LF_GWS_TAG) >> 32) & SSO_TT_EMPTY;
+ if (ptag != SSO_TT_EMPTY)
+ cnxk_sso_hws_swtag_flush(ws->base);
+
+ do {
+ ptag = plt_read64(ws->base + SSOW_LF_GWS_PENDSTATE);
+ } while (ptag & BIT_ULL(56));
+
+ /* Check if we have work in PRF_WQE0, if so extract it. */
+ switch (dev->gw_mode) {
+ case CNXK_GW_MODE_PREF:
+ case CNXK_GW_MODE_PREF_WFE:
+ while (plt_read64(ws->base + SSOW_LF_GWS_PRF_WQE0) & BIT_ULL(63))
+ ;
+ break;
+ case CNXK_GW_MODE_NONE:
+ default:
+ break;
+ }
+
+ if (CNXK_TT_FROM_TAG(plt_read64(ws->base + SSOW_LF_GWS_PRF_WQE0)) != SSO_TT_EMPTY) {
+ plt_write64(BIT_ULL(16) | 1, ws->base + SSOW_LF_GWS_OP_GET_WORK0);
+ cn20k_sso_hws_get_work_empty(ws, &ev, 0);
+ if (ev.u64) {
+ if (flush_cb)
+ flush_cb(event_dev->data->dev_id, ev, args);
+ }
+ cnxk_sso_hws_swtag_flush(ws->base);
+ do {
+ ptag = plt_read64(ws->base + SSOW_LF_GWS_PENDSTATE);
+ } while (ptag & BIT_ULL(56));
+ }
+ ws->swtag_req = 0;
+ plt_write64(0, ws->base + SSOW_LF_GWS_OP_GWC_INVAL);
+}
+
static int
cn20k_sso_port_link_profile(struct rte_eventdev *event_dev, void *port, const uint8_t queues[],
const uint8_t priorities[], uint16_t nb_links, uint8_t profile)
@@ -265,6 +324,7 @@ static struct eventdev_ops cn20k_sso_dev_ops = {
.port_def_conf = cnxk_sso_port_def_conf,
.port_setup = cn20k_sso_port_setup,
.port_release = cn20k_sso_port_release,
+ .port_quiesce = cn20k_sso_port_quiesce,
.port_link = cn20k_sso_port_link,
.port_unlink = cn20k_sso_port_unlink,
.port_link_profile = cn20k_sso_port_link_profile,
--
2.25.1