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[173.48.102.189]) by smtp.gmail.com with ESMTPSA id s26-20020ac8529a000000b002f39b99f6b4sm4712736qtn.78.2022.05.02.14.22.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 May 2022 14:22:44 -0700 (PDT) From: Ed Czeck To: dev@dpdk.org, ferruh.yigit@intel.com Cc: Ed Czeck , Shepard Siegel , John Miller Subject: [PATCH 2/4] net/ark: update ddm code to match current hardware version Date: Mon, 2 May 2022 17:22:30 -0400 Message-Id: <20220502212232.1283-2-ed.czeck@atomicrules.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220502212232.1283-1-ed.czeck@atomicrules.com> References: <20220502212232.1283-1-ed.czeck@atomicrules.com> X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org new version code remove device-level start, stop, and reset operations add queue-based start, stop and reset as required by hardware Signed-off-by: Ed Czeck --- drivers/net/ark/ark_ddm.c | 80 +++++---------------------------- drivers/net/ark/ark_ddm.h | 30 +++++++------ drivers/net/ark/ark_ethdev.c | 33 -------------- drivers/net/ark/ark_ethdev_tx.c | 35 +++------------ 4 files changed, 34 insertions(+), 144 deletions(-) diff --git a/drivers/net/ark/ark_ddm.c b/drivers/net/ark/ark_ddm.c index b16c739d50..eb88349b7b 100644 --- a/drivers/net/ark/ark_ddm.c +++ b/drivers/net/ark/ark_ddm.c @@ -14,95 +14,45 @@ int ark_ddm_verify(struct ark_ddm_t *ddm) { uint32_t hw_const; + uint32_t hw_ver; if (sizeof(struct ark_ddm_t) != ARK_DDM_EXPECTED_SIZE) { ARK_PMD_LOG(ERR, "DDM structure looks incorrect %d vs %zd\n", ARK_DDM_EXPECTED_SIZE, sizeof(struct ark_ddm_t)); return -1; } - hw_const = ddm->cfg.const0; - if (hw_const == ARK_DDM_CONST3) + hw_const = ddm->cfg.idnum; + hw_ver = ddm->cfg.vernum; + if (hw_const == ARK_DDM_MODID && hw_ver == ARK_DDM_MODVER) return 0; - if (hw_const == ARK_DDM_CONST1) { - ARK_PMD_LOG(ERR, - "ARK: DDM module is version 1, " - "PMD expects version 2\n"); - return -1; - } - - if (hw_const == ARK_DDM_CONST2) { - ARK_PMD_LOG(ERR, - "ARK: DDM module is version 2, " - "PMD expects version 3\n"); - return -1; - } ARK_PMD_LOG(ERR, - "ARK: DDM module not found as expected 0x%08x\n", - ddm->cfg.const0); + "ARK: DDM module not found as expected" + " id: %08x ver: %08x\n", + hw_const, hw_ver); return -1; } void -ark_ddm_start(struct ark_ddm_t *ddm) -{ - ddm->cfg.command = 1; -} - -int -ark_ddm_stop(struct ark_ddm_t *ddm, const int wait) +ark_ddm_queue_enable(struct ark_ddm_t *ddm, int enable) { - int cnt = 0; - - ddm->cfg.command = 2; - rte_wmb(); - while (wait && (ddm->cfg.stop_flushed & 0x01) == 0) { - if (cnt++ > 1000) - return 1; - - usleep(10); - } - return 0; + ddm->setup.qcommand = enable ? 1U : 0U; } void -ark_ddm_reset(struct ark_ddm_t *ddm) -{ - int status; - - /* reset only works if ddm has stopped properly. */ - status = ark_ddm_stop(ddm, 1); - - if (status != 0) { - ARK_PMD_LOG(NOTICE, "%s stop failed doing forced reset\n", - __func__); - ddm->cfg.command = 4; - usleep(10); - } - ddm->cfg.command = 3; -} - -void -ark_ddm_setup(struct ark_ddm_t *ddm, rte_iova_t cons_addr, uint32_t interval) +ark_ddm_queue_setup(struct ark_ddm_t *ddm, rte_iova_t cons_addr) { ddm->setup.cons_write_index_addr = cons_addr; - ddm->setup.write_index_interval = interval / 4; /* 4 ns period */ + ddm->setup.cons_index = 0; } +/* Global stats clear */ void ark_ddm_stats_reset(struct ark_ddm_t *ddm) { ddm->cfg.tlp_stats_clear = 1; } -void -ark_ddm_dump(struct ark_ddm_t *ddm, const char *msg) -{ - ARK_PMD_LOG(DEBUG, "%s Stopped: %d\n", msg, - ark_ddm_is_stopped(ddm) - ); -} - void ark_ddm_dump_stats(struct ark_ddm_t *ddm, const char *msg) { @@ -116,12 +66,6 @@ ark_ddm_dump_stats(struct ark_ddm_t *ddm, const char *msg) "MBufs", stats->tx_mbuf_count); } -int -ark_ddm_is_stopped(struct ark_ddm_t *ddm) -{ - return (ddm->cfg.stop_flushed & 0x01) != 0; -} - uint64_t ark_ddm_queue_byte_count(struct ark_ddm_t *ddm) { diff --git a/drivers/net/ark/ark_ddm.h b/drivers/net/ark/ark_ddm.h index 687ff2519a..886bb088ce 100644 --- a/drivers/net/ark/ark_ddm.h +++ b/drivers/net/ark/ark_ddm.h @@ -40,17 +40,24 @@ union ark_tx_meta { */ #define ARK_DDM_CFG 0x0000 /* Set unique HW ID for hardware version */ -#define ARK_DDM_CONST3 (0x334d4444) -#define ARK_DDM_CONST2 (0x324d4444) -#define ARK_DDM_CONST1 (0xfacecafe) +#define ARK_DDM_MODID 0x204d4444 +#define ARK_DDM_MODVER 0x37313232 struct ark_ddm_cfg_t { + union { + char id[4]; + uint32_t idnum; + }; + union { + char ver[4]; + uint32_t vernum; + volatile uint32_t tlp_stats_clear; + }; uint32_t r0; - volatile uint32_t tlp_stats_clear; - uint32_t const0; volatile uint32_t tag_max; volatile uint32_t command; - volatile uint32_t stop_flushed; + uint32_t write_index_interval; /* 4ns each */ + volatile uint64_t qflow; }; #define ARK_DDM_STATS 0x0020 @@ -108,7 +115,7 @@ struct ark_ddm_cpld_ps_t { #define ARK_DDM_SETUP 0x00e0 struct ark_ddm_setup_t { rte_iova_t cons_write_index_addr; - uint32_t write_index_interval; /* 4ns each */ + volatile uint32_t qcommand; volatile uint32_t cons_index; }; @@ -141,17 +148,12 @@ struct ark_ddm_t { /* DDM function prototype */ int ark_ddm_verify(struct ark_ddm_t *ddm); -void ark_ddm_start(struct ark_ddm_t *ddm); -int ark_ddm_stop(struct ark_ddm_t *ddm, const int wait); -void ark_ddm_reset(struct ark_ddm_t *ddm); void ark_ddm_stats_reset(struct ark_ddm_t *ddm); -void ark_ddm_setup(struct ark_ddm_t *ddm, rte_iova_t cons_addr, - uint32_t interval); +void ark_ddm_queue_setup(struct ark_ddm_t *ddm, rte_iova_t cons_addr); void ark_ddm_dump_stats(struct ark_ddm_t *ddm, const char *msg); -void ark_ddm_dump(struct ark_ddm_t *ddm, const char *msg); -int ark_ddm_is_stopped(struct ark_ddm_t *ddm); uint64_t ark_ddm_queue_byte_count(struct ark_ddm_t *ddm); uint64_t ark_ddm_queue_pkt_count(struct ark_ddm_t *ddm); void ark_ddm_queue_reset_stats(struct ark_ddm_t *ddm); +void ark_ddm_queue_enable(struct ark_ddm_t *ddm, int enable); #endif diff --git a/drivers/net/ark/ark_ethdev.c b/drivers/net/ark/ark_ethdev.c index c0578b85ce..07d1d2178d 100644 --- a/drivers/net/ark/ark_ethdev.c +++ b/drivers/net/ark/ark_ethdev.c @@ -527,10 +527,6 @@ ark_config_device(struct rte_eth_dev *dev) mpu = RTE_PTR_ADD(mpu, ARK_MPU_QOFFSET); } - /* TX -- DDM */ - if (ark_ddm_stop(ark->ddm.v, 1)) - ARK_PMD_LOG(ERR, "Unable to stop DDM\n"); - mpu = ark->mputx.v; num_q = ark_api_num_queues(mpu); ark->tx_queues = num_q; @@ -538,10 +534,6 @@ ark_config_device(struct rte_eth_dev *dev) mpu = RTE_PTR_ADD(mpu, ARK_MPU_QOFFSET); } - ark_ddm_reset(ark->ddm.v); - ark_ddm_stats_reset(ark->ddm.v); - - ark_ddm_stop(ark->ddm.v, 0); if (ark->rqpacing) ark_rqp_stats_reset(ark->rqpacing); @@ -595,9 +587,6 @@ eth_ark_dev_start(struct rte_eth_dev *dev) for (i = 0; i < dev->data->nb_tx_queues; i++) eth_ark_tx_queue_start(dev, i); - /* start DDM */ - ark_ddm_start(ark->ddm.v); - ark->started = 1; /* set xmit and receive function */ dev->rx_pkt_burst = ð_ark_recv_pkts; @@ -671,28 +660,6 @@ eth_ark_dev_stop(struct rte_eth_dev *dev) } } - /* Stop DDM */ - /* Wait up to 0.1 second. each stop is up to 1000 * 10 useconds */ - for (i = 0; i < 10; i++) { - status = ark_ddm_stop(ark->ddm.v, 1); - if (status == 0) - break; - } - if (status || i != 0) { - ARK_PMD_LOG(ERR, "DDM stop anomaly. status:" - " %d iter: %u. (%s)\n", - status, - i, - __func__); - ark_ddm_dump(ark->ddm.v, "Stop anomaly"); - - mpu = ark->mputx.v; - for (i = 0; i < ark->tx_queues; i++) { - ark_mpu_dump(mpu, "DDM failure dump", i); - mpu = RTE_PTR_ADD(mpu, ARK_MPU_QOFFSET); - } - } - /* STOP RX Side */ /* Stop UDM multiple tries attempted */ for (i = 0; i < 10; i++) { diff --git a/drivers/net/ark/ark_ethdev_tx.c b/drivers/net/ark/ark_ethdev_tx.c index abdce6a8cc..5940a592a2 100644 --- a/drivers/net/ark/ark_ethdev_tx.c +++ b/drivers/net/ark/ark_ethdev_tx.c @@ -59,12 +59,6 @@ static int eth_ark_tx_jumbo(struct ark_tx_queue *queue, static int eth_ark_tx_hw_queue_config(struct ark_tx_queue *queue); static void free_completed_tx(struct ark_tx_queue *queue); -static inline void -ark_tx_hw_queue_stop(struct ark_tx_queue *queue) -{ - ark_mpu_stop(queue->mpu); -} - /* ************************************************************************* */ static inline void eth_ark_tx_desc_fill(struct ark_tx_queue *queue, @@ -309,7 +303,6 @@ static int eth_ark_tx_hw_queue_config(struct ark_tx_queue *queue) { rte_iova_t queue_base, ring_base, cons_index_addr; - uint32_t write_interval_ns; /* Verify HW -- MPU */ if (ark_mpu_verify(queue->mpu, sizeof(union ark_tx_meta))) @@ -326,28 +319,9 @@ eth_ark_tx_hw_queue_config(struct ark_tx_queue *queue) /* Stop and Reset and configure MPU */ ark_mpu_configure(queue->mpu, ring_base, queue->queue_size, 1); - /* - * Adjust the write interval based on queue size -- - * increase pcie traffic when low mbuf count - * Queue sizes less than 128 are not allowed - */ - switch (queue->queue_size) { - case 128: - write_interval_ns = 500; - break; - case 256: - write_interval_ns = 500; - break; - case 512: - write_interval_ns = 1000; - break; - default: - write_interval_ns = 2000; - break; - } - /* Completion address in UDM */ - ark_ddm_setup(queue->ddm, cons_index_addr, write_interval_ns); + ark_ddm_queue_setup(queue->ddm, cons_index_addr); + ark_ddm_queue_reset_stats(queue->ddm); return 0; } @@ -360,7 +334,8 @@ eth_ark_tx_queue_release(void *vtx_queue) queue = (struct ark_tx_queue *)vtx_queue; - ark_tx_hw_queue_stop(queue); + ark_ddm_queue_enable(queue->ddm, 0); + ark_mpu_stop(queue->mpu); queue->cons_index = queue->prod_index; free_completed_tx(queue); @@ -386,6 +361,7 @@ eth_ark_tx_queue_stop(struct rte_eth_dev *dev, uint16_t queue_id) return -1; } + ark_ddm_queue_enable(queue->ddm, 0); ark_mpu_stop(queue->mpu); free_completed_tx(queue); @@ -404,6 +380,7 @@ eth_ark_tx_queue_start(struct rte_eth_dev *dev, uint16_t queue_id) return 0; ark_mpu_start(queue->mpu); + ark_ddm_queue_enable(queue->ddm, 1); dev->data->tx_queue_state[queue_id] = RTE_ETH_QUEUE_STATE_STARTED; return 0;