From c8b1008d33d354f30775817043a31c462ab11d1a Mon Sep 17 00:00:00 2001 From: Pavan Nikhilesh Date: Wed, 27 Apr 2022 16:28:27 +0530 Subject: [PATCH] event/cnxk: add checks in release operation Add additional checks while performing RTE_EVENT_OP_RELEASE to ensure that there are no pending SWTAGs and FLUSHEs in flight. Signed-off-by: Pavan Nikhilesh --- drivers/event/cnxk/cn10k_eventdev.c | 4 +--- drivers/event/cnxk/cn10k_worker.c | 8 ++++++-- drivers/event/cnxk/cn9k_eventdev.c | 4 +--- drivers/event/cnxk/cn9k_worker.c | 16 ++++++++++++---- drivers/event/cnxk/cn9k_worker.h | 3 +-- drivers/event/cnxk/cnxk_worker.h | 17 ++++++++++++++--- 6 files changed, 35 insertions(+), 17 deletions(-) diff --git a/drivers/event/cnxk/cn10k_eventdev.c b/drivers/event/cnxk/cn10k_eventdev.c index 9b4d2895ec..2fa2cd31c2 100644 --- a/drivers/event/cnxk/cn10k_eventdev.c +++ b/drivers/event/cnxk/cn10k_eventdev.c @@ -137,9 +137,7 @@ cn10k_sso_hws_flush_events(void *hws, uint8_t queue_id, uintptr_t base, if (fn != NULL && ev.u64 != 0) fn(arg, ev); if (ev.sched_type != SSO_TT_EMPTY) - cnxk_sso_hws_swtag_flush( - ws->base + SSOW_LF_GWS_WQE0, - ws->base + SSOW_LF_GWS_OP_SWTAG_FLUSH); + cnxk_sso_hws_swtag_flush(ws->base); do { val = plt_read64(ws->base + SSOW_LF_GWS_PENDSTATE); } while (val & BIT_ULL(56)); diff --git a/drivers/event/cnxk/cn10k_worker.c b/drivers/event/cnxk/cn10k_worker.c index 1ffd48a5ab..f953e19dd0 100644 --- a/drivers/event/cnxk/cn10k_worker.c +++ b/drivers/event/cnxk/cn10k_worker.c @@ -18,8 +18,12 @@ cn10k_sso_hws_enq(void *port, const struct rte_event *ev) cn10k_sso_hws_forward_event(ws, ev); break; case RTE_EVENT_OP_RELEASE: - cnxk_sso_hws_swtag_flush(ws->base + SSOW_LF_GWS_WQE0, - ws->base + SSOW_LF_GWS_OP_SWTAG_FLUSH); + if (ws->swtag_req) { + cnxk_sso_hws_desched(ev->u64, ws->base); + ws->swtag_req = 0; + break; + } + cnxk_sso_hws_swtag_flush(ws->base); break; default: return 0; diff --git a/drivers/event/cnxk/cn9k_eventdev.c b/drivers/event/cnxk/cn9k_eventdev.c index 4bba477dd1..41bbe3cb22 100644 --- a/drivers/event/cnxk/cn9k_eventdev.c +++ b/drivers/event/cnxk/cn9k_eventdev.c @@ -156,9 +156,7 @@ cn9k_sso_hws_flush_events(void *hws, uint8_t queue_id, uintptr_t base, if (fn != NULL && ev.u64 != 0) fn(arg, ev); if (ev.sched_type != SSO_TT_EMPTY) - cnxk_sso_hws_swtag_flush( - ws_base + SSOW_LF_GWS_TAG, - ws_base + SSOW_LF_GWS_OP_SWTAG_FLUSH); + cnxk_sso_hws_swtag_flush(ws_base); do { val = plt_read64(ws_base + SSOW_LF_GWS_PENDSTATE); } while (val & BIT_ULL(56)); diff --git a/drivers/event/cnxk/cn9k_worker.c b/drivers/event/cnxk/cn9k_worker.c index fca1f0dffa..abbbfffd85 100644 --- a/drivers/event/cnxk/cn9k_worker.c +++ b/drivers/event/cnxk/cn9k_worker.c @@ -19,8 +19,12 @@ cn9k_sso_hws_enq(void *port, const struct rte_event *ev) cn9k_sso_hws_forward_event(ws, ev); break; case RTE_EVENT_OP_RELEASE: - cnxk_sso_hws_swtag_flush(ws->base + SSOW_LF_GWS_TAG, - ws->base + SSOW_LF_GWS_OP_SWTAG_FLUSH); + if (ws->swtag_req) { + cnxk_sso_hws_desched(ev->u64, ws->base); + ws->swtag_req = 0; + break; + } + cnxk_sso_hws_swtag_flush(ws->base); break; default: return 0; @@ -78,8 +82,12 @@ cn9k_sso_hws_dual_enq(void *port, const struct rte_event *ev) cn9k_sso_hws_dual_forward_event(dws, base, ev); break; case RTE_EVENT_OP_RELEASE: - cnxk_sso_hws_swtag_flush(base + SSOW_LF_GWS_TAG, - base + SSOW_LF_GWS_OP_SWTAG_FLUSH); + if (dws->swtag_req) { + cnxk_sso_hws_desched(ev->u64, base); + dws->swtag_req = 0; + break; + } + cnxk_sso_hws_swtag_flush(base); break; default: return 0; diff --git a/drivers/event/cnxk/cn9k_worker.h b/drivers/event/cnxk/cn9k_worker.h index 917d1e0b40..88eb4e9cf9 100644 --- a/drivers/event/cnxk/cn9k_worker.h +++ b/drivers/event/cnxk/cn9k_worker.h @@ -841,8 +841,7 @@ cn9k_sso_hws_event_tx(uint64_t base, struct rte_event *ev, uint64_t *cmd, return 1; } - cnxk_sso_hws_swtag_flush(base + SSOW_LF_GWS_TAG, - base + SSOW_LF_GWS_OP_SWTAG_FLUSH); + cnxk_sso_hws_swtag_flush(base); return 1; } diff --git a/drivers/event/cnxk/cnxk_worker.h b/drivers/event/cnxk/cnxk_worker.h index 7de03f3fbb..5e5e96b1ec 100644 --- a/drivers/event/cnxk/cnxk_worker.h +++ b/drivers/event/cnxk/cnxk_worker.h @@ -45,11 +45,15 @@ cnxk_sso_hws_swtag_untag(uintptr_t swtag_untag_op) } static __rte_always_inline void -cnxk_sso_hws_swtag_flush(uint64_t tag_op, uint64_t flush_op) +cnxk_sso_hws_swtag_flush(uint64_t base) { - if (CNXK_TT_FROM_TAG(plt_read64(tag_op)) == SSO_TT_EMPTY) + /* Ensure that there is no previous flush is pending. */ + while (plt_read64(base + SSOW_LF_GWS_PENDSTATE) & BIT_ULL(56)) + ; + if (CNXK_TT_FROM_TAG(plt_read64(base + SSOW_LF_GWS_TAG)) == + SSO_TT_EMPTY) return; - plt_write64(0, flush_op); + plt_write64(0, base + SSOW_LF_GWS_OP_SWTAG_FLUSH); } static __rte_always_inline uint64_t @@ -78,4 +82,11 @@ cnxk_sso_hws_swtag_wait(uintptr_t tag_op) return swtp; } +static __rte_always_inline void +cnxk_sso_hws_desched(uint64_t u64, uint64_t base) +{ + plt_write64(u64, base + SSOW_LF_GWS_OP_UPD_WQP_GRP1); + plt_write64(0, base + SSOW_LF_GWS_OP_DESCHED); +} + #endif