From: Shijith Thotton Date: Tue, 4 May 2021 00:27:14 +0000 (+0530) Subject: event/cnxk: create and free timer adapter X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=0e792433d051efb6c68100383241f2c29c060e6d;p=dpdk.git event/cnxk: create and free timer adapter When the application calls timer adapter create the following is used: - Allocate a TIM LF based on number of LF's provisioned. - Verify the config parameters supplied. - Allocate memory required for * Buckets based on min and max timeout supplied. * Allocate the chunk pool based on the number of timers. On Free: - Free the allocated bucket and chunk memory. - Free the TIM lf allocated. Signed-off-by: Shijith Thotton Signed-off-by: Pavan Nikhilesh --- diff --git a/drivers/event/cnxk/cnxk_tim_evdev.c b/drivers/event/cnxk/cnxk_tim_evdev.c index 265bee533a..655540a72b 100644 --- a/drivers/event/cnxk/cnxk_tim_evdev.c +++ b/drivers/event/cnxk/cnxk_tim_evdev.c @@ -5,6 +5,177 @@ #include "cnxk_eventdev.h" #include "cnxk_tim_evdev.h" +static struct rte_event_timer_adapter_ops cnxk_tim_ops; + +static int +cnxk_tim_chnk_pool_create(struct cnxk_tim_ring *tim_ring, + struct rte_event_timer_adapter_conf *rcfg) +{ + unsigned int cache_sz = (tim_ring->nb_chunks / 1.5); + unsigned int mp_flags = 0; + char pool_name[25]; + int rc; + + cache_sz /= rte_lcore_count(); + /* Create chunk pool. */ + if (rcfg->flags & RTE_EVENT_TIMER_ADAPTER_F_SP_PUT) { + mp_flags = MEMPOOL_F_SP_PUT | MEMPOOL_F_SC_GET; + plt_tim_dbg("Using single producer mode"); + tim_ring->prod_type_sp = true; + } + + snprintf(pool_name, sizeof(pool_name), "cnxk_tim_chunk_pool%d", + tim_ring->ring_id); + + if (cache_sz > RTE_MEMPOOL_CACHE_MAX_SIZE) + cache_sz = RTE_MEMPOOL_CACHE_MAX_SIZE; + cache_sz = cache_sz != 0 ? cache_sz : 2; + tim_ring->nb_chunks += (cache_sz * rte_lcore_count()); + tim_ring->chunk_pool = rte_mempool_create_empty( + pool_name, tim_ring->nb_chunks, tim_ring->chunk_sz, cache_sz, 0, + rte_socket_id(), mp_flags); + + if (tim_ring->chunk_pool == NULL) { + plt_err("Unable to create chunkpool."); + return -ENOMEM; + } + + rc = rte_mempool_set_ops_byname(tim_ring->chunk_pool, + rte_mbuf_platform_mempool_ops(), NULL); + if (rc < 0) { + plt_err("Unable to set chunkpool ops"); + goto free; + } + + rc = rte_mempool_populate_default(tim_ring->chunk_pool); + if (rc < 0) { + plt_err("Unable to set populate chunkpool."); + goto free; + } + tim_ring->aura = + roc_npa_aura_handle_to_aura(tim_ring->chunk_pool->pool_id); + tim_ring->ena_dfb = 0; + + return 0; + +free: + rte_mempool_free(tim_ring->chunk_pool); + return rc; +} + +static int +cnxk_tim_ring_create(struct rte_event_timer_adapter *adptr) +{ + struct rte_event_timer_adapter_conf *rcfg = &adptr->data->conf; + struct cnxk_tim_evdev *dev = cnxk_tim_priv_get(); + struct cnxk_tim_ring *tim_ring; + int rc; + + if (dev == NULL) + return -ENODEV; + + if (adptr->data->id >= dev->nb_rings) + return -ENODEV; + + tim_ring = rte_zmalloc("cnxk_tim_prv", sizeof(struct cnxk_tim_ring), 0); + if (tim_ring == NULL) + return -ENOMEM; + + rc = roc_tim_lf_alloc(&dev->tim, adptr->data->id, NULL); + if (rc < 0) { + plt_err("Failed to create timer ring"); + goto tim_ring_free; + } + + if (NSEC2TICK(RTE_ALIGN_MUL_CEIL( + rcfg->timer_tick_ns, + cnxk_tim_min_resolution_ns(cnxk_tim_cntfrq())), + cnxk_tim_cntfrq()) < + cnxk_tim_min_tmo_ticks(cnxk_tim_cntfrq())) { + if (rcfg->flags & RTE_EVENT_TIMER_ADAPTER_F_ADJUST_RES) + rcfg->timer_tick_ns = TICK2NSEC( + cnxk_tim_min_tmo_ticks(cnxk_tim_cntfrq()), + cnxk_tim_cntfrq()); + else { + rc = -ERANGE; + goto tim_hw_free; + } + } + tim_ring->ring_id = adptr->data->id; + tim_ring->clk_src = (int)rcfg->clk_src; + tim_ring->tck_nsec = RTE_ALIGN_MUL_CEIL( + rcfg->timer_tick_ns, + cnxk_tim_min_resolution_ns(cnxk_tim_cntfrq())); + tim_ring->max_tout = rcfg->max_tmo_ns; + tim_ring->nb_bkts = (tim_ring->max_tout / tim_ring->tck_nsec); + tim_ring->nb_timers = rcfg->nb_timers; + tim_ring->chunk_sz = dev->chunk_sz; + + tim_ring->nb_chunks = tim_ring->nb_timers; + tim_ring->nb_chunk_slots = CNXK_TIM_NB_CHUNK_SLOTS(tim_ring->chunk_sz); + /* Create buckets. */ + tim_ring->bkt = + rte_zmalloc("cnxk_tim_bucket", + (tim_ring->nb_bkts) * sizeof(struct cnxk_tim_bkt), + RTE_CACHE_LINE_SIZE); + if (tim_ring->bkt == NULL) + goto tim_hw_free; + + rc = cnxk_tim_chnk_pool_create(tim_ring, rcfg); + if (rc < 0) + goto tim_bkt_free; + + rc = roc_tim_lf_config( + &dev->tim, tim_ring->ring_id, + cnxk_tim_convert_clk_src(tim_ring->clk_src), 0, 0, + tim_ring->nb_bkts, tim_ring->chunk_sz, + NSEC2TICK(tim_ring->tck_nsec, cnxk_tim_cntfrq())); + if (rc < 0) { + plt_err("Failed to configure timer ring"); + goto tim_chnk_free; + } + + tim_ring->base = roc_tim_lf_base_get(&dev->tim, tim_ring->ring_id); + plt_write64((uint64_t)tim_ring->bkt, tim_ring->base + TIM_LF_RING_BASE); + plt_write64(tim_ring->aura, tim_ring->base + TIM_LF_RING_AURA); + + plt_tim_dbg( + "Total memory used %" PRIu64 "MB\n", + (uint64_t)(((tim_ring->nb_chunks * tim_ring->chunk_sz) + + (tim_ring->nb_bkts * sizeof(struct cnxk_tim_bkt))) / + BIT_ULL(20))); + + adptr->data->adapter_priv = tim_ring; + return rc; + +tim_chnk_free: + rte_mempool_free(tim_ring->chunk_pool); +tim_bkt_free: + rte_free(tim_ring->bkt); +tim_hw_free: + roc_tim_lf_free(&dev->tim, tim_ring->ring_id); +tim_ring_free: + rte_free(tim_ring); + return rc; +} + +static int +cnxk_tim_ring_free(struct rte_event_timer_adapter *adptr) +{ + struct cnxk_tim_ring *tim_ring = adptr->data->adapter_priv; + struct cnxk_tim_evdev *dev = cnxk_tim_priv_get(); + + if (dev == NULL) + return -ENODEV; + + roc_tim_lf_free(&dev->tim, tim_ring->ring_id); + rte_free(tim_ring->bkt); + rte_mempool_free(tim_ring->chunk_pool); + rte_free(tim_ring); + + return 0; +} + int cnxk_tim_caps_get(const struct rte_eventdev *evdev, uint64_t flags, uint32_t *caps, @@ -18,6 +189,9 @@ cnxk_tim_caps_get(const struct rte_eventdev *evdev, uint64_t flags, if (dev == NULL) return -ENODEV; + cnxk_tim_ops.init = cnxk_tim_ring_create; + cnxk_tim_ops.uninit = cnxk_tim_ring_free; + /* Store evdev pointer for later use. */ dev->event_dev = (struct rte_eventdev *)(uintptr_t)evdev; *caps = RTE_EVENT_TIMER_ADAPTER_CAP_INTERNAL_PORT; diff --git a/drivers/event/cnxk/cnxk_tim_evdev.h b/drivers/event/cnxk/cnxk_tim_evdev.h index ece66ab250..2335707cd4 100644 --- a/drivers/event/cnxk/cnxk_tim_evdev.h +++ b/drivers/event/cnxk/cnxk_tim_evdev.h @@ -12,12 +12,26 @@ #include #include +#include #include #include "roc_api.h" -#define CNXK_TIM_EVDEV_NAME cnxk_tim_eventdev -#define CNXK_TIM_RING_DEF_CHUNK_SZ (4096) +#define NSECPERSEC 1E9 +#define USECPERSEC 1E6 +#define TICK2NSEC(__tck, __freq) (((__tck)*NSECPERSEC) / (__freq)) + +#define CNXK_TIM_EVDEV_NAME cnxk_tim_eventdev +#define CNXK_TIM_MAX_BUCKETS (0xFFFFF) +#define CNXK_TIM_RING_DEF_CHUNK_SZ (4096) +#define CNXK_TIM_CHUNK_ALIGNMENT (16) +#define CNXK_TIM_MAX_BURST \ + (RTE_CACHE_LINE_SIZE / CNXK_TIM_CHUNK_ALIGNMENT) +#define CNXK_TIM_NB_CHUNK_SLOTS(sz) (((sz) / CNXK_TIM_CHUNK_ALIGNMENT) - 1) +#define CNXK_TIM_MIN_CHUNK_SLOTS (0x1) +#define CNXK_TIM_MAX_CHUNK_SLOTS (0x1FFE) + +#define CN9K_TIM_MIN_TMO_TKS (256) struct cnxk_tim_evdev { struct roc_tim tim; @@ -26,6 +40,57 @@ struct cnxk_tim_evdev { uint32_t chunk_sz; }; +enum cnxk_tim_clk_src { + CNXK_TIM_CLK_SRC_10NS = RTE_EVENT_TIMER_ADAPTER_CPU_CLK, + CNXK_TIM_CLK_SRC_GPIO = RTE_EVENT_TIMER_ADAPTER_EXT_CLK0, + CNXK_TIM_CLK_SRC_GTI = RTE_EVENT_TIMER_ADAPTER_EXT_CLK1, + CNXK_TIM_CLK_SRC_PTP = RTE_EVENT_TIMER_ADAPTER_EXT_CLK2, +}; + +struct cnxk_tim_bkt { + uint64_t first_chunk; + union { + uint64_t w1; + struct { + uint32_t nb_entry; + uint8_t sbt : 1; + uint8_t hbt : 1; + uint8_t bsk : 1; + uint8_t rsvd : 5; + uint8_t lock; + int16_t chunk_remainder; + }; + }; + uint64_t current_chunk; + uint64_t pad; +}; + +struct cnxk_tim_ring { + uintptr_t base; + uint16_t nb_chunk_slots; + uint32_t nb_bkts; + uint64_t tck_int; + uint64_t tot_int; + struct cnxk_tim_bkt *bkt; + struct rte_mempool *chunk_pool; + uint64_t arm_cnt; + uint8_t prod_type_sp; + uint8_t ena_dfb; + uint16_t ring_id; + uint32_t aura; + uint64_t nb_timers; + uint64_t tck_nsec; + uint64_t max_tout; + uint64_t nb_chunks; + uint64_t chunk_sz; + enum cnxk_tim_clk_src clk_src; +} __rte_cache_aligned; + +struct cnxk_tim_ent { + uint64_t w0; + uint64_t wqe; +}; + static inline struct cnxk_tim_evdev * cnxk_tim_priv_get(void) { @@ -38,6 +103,65 @@ cnxk_tim_priv_get(void) return mz->addr; } +static inline uint64_t +cnxk_tim_min_tmo_ticks(uint64_t freq) +{ + if (roc_model_runtime_is_cn9k()) + return CN9K_TIM_MIN_TMO_TKS; + else /* CN10K min tick is of 1us */ + return freq / USECPERSEC; +} + +static inline uint64_t +cnxk_tim_min_resolution_ns(uint64_t freq) +{ + return NSECPERSEC / freq; +} + +static inline enum roc_tim_clk_src +cnxk_tim_convert_clk_src(enum cnxk_tim_clk_src clk_src) +{ + switch (clk_src) { + case RTE_EVENT_TIMER_ADAPTER_CPU_CLK: + return roc_model_runtime_is_cn9k() ? ROC_TIM_CLK_SRC_10NS : + ROC_TIM_CLK_SRC_GTI; + default: + return ROC_TIM_CLK_SRC_INVALID; + } +} + +#ifdef RTE_ARCH_ARM64 +static inline uint64_t +cnxk_tim_cntvct(void) +{ + uint64_t tsc; + + asm volatile("mrs %0, cntvct_el0" : "=r"(tsc)); + return tsc; +} + +static inline uint64_t +cnxk_tim_cntfrq(void) +{ + uint64_t freq; + + asm volatile("mrs %0, cntfrq_el0" : "=r"(freq)); + return freq; +} +#else +static inline uint64_t +cnxk_tim_cntvct(void) +{ + return 0; +} + +static inline uint64_t +cnxk_tim_cntfrq(void) +{ + return 0; +} +#endif + int cnxk_tim_caps_get(const struct rte_eventdev *dev, uint64_t flags, uint32_t *caps, const struct rte_event_timer_adapter_ops **ops);