From: Jeff Shaw Date: Wed, 4 Feb 2015 07:47:01 +0000 (+0800) Subject: fm10k: add dev start/stop X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=9ae6068c86da;p=dpdk.git fm10k: add dev start/stop 1. Add function to initialize RX queues. 2. Add function to initialize TX queues. 3. Add fm10k_dev_start, fm10k_dev_stop and fm10k_dev_close functions. 4. Add function to close mailbox service. Signed-off-by: Jeff Shaw Signed-off-by: Chen Jing D(Mark) --- diff --git a/lib/librte_pmd_fm10k/fm10k_ethdev.c b/lib/librte_pmd_fm10k/fm10k_ethdev.c index 0fb7b95952..b79badc3d2 100644 --- a/lib/librte_pmd_fm10k/fm10k_ethdev.c +++ b/lib/librte_pmd_fm10k/fm10k_ethdev.c @@ -44,11 +44,14 @@ #define FM10K_RX_BUFF_ALIGN 512 /* Default delay to acquire mailbox lock */ #define FM10K_MBXLOCK_DELAY_US 20 +#define UINT64_LOWER_32BITS_MASK 0x00000000ffffffffULL /* Number of chars per uint32 type */ #define CHARS_PER_UINT32 (sizeof(uint32_t)) #define BIT_MASK_PER_UINT32 ((1 << CHARS_PER_UINT32) - 1) +static void fm10k_close_mbx_service(struct fm10k_hw *hw); + static void fm10k_mbx_initlock(struct fm10k_hw *hw) { @@ -267,6 +270,98 @@ fm10k_dev_configure(struct rte_eth_dev *dev) return 0; } +static int +fm10k_dev_tx_init(struct rte_eth_dev *dev) +{ + struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private); + int i, ret; + struct fm10k_tx_queue *txq; + uint64_t base_addr; + uint32_t size; + + /* Disable TXINT to avoid possible interrupt */ + for (i = 0; i < hw->mac.max_queues; i++) + FM10K_WRITE_REG(hw, FM10K_TXINT(i), + 3 << FM10K_TXINT_TIMER_SHIFT); + + /* Setup TX queue */ + for (i = 0; i < dev->data->nb_tx_queues; ++i) { + txq = dev->data->tx_queues[i]; + base_addr = txq->hw_ring_phys_addr; + size = txq->nb_desc * sizeof(struct fm10k_tx_desc); + + /* disable queue to avoid issues while updating state */ + ret = tx_queue_disable(hw, i); + if (ret) { + PMD_INIT_LOG(ERR, "failed to disable queue %d", i); + return -1; + } + + /* set location and size for descriptor ring */ + FM10K_WRITE_REG(hw, FM10K_TDBAL(i), + base_addr & UINT64_LOWER_32BITS_MASK); + FM10K_WRITE_REG(hw, FM10K_TDBAH(i), + base_addr >> (CHAR_BIT * sizeof(uint32_t))); + FM10K_WRITE_REG(hw, FM10K_TDLEN(i), size); + } + return 0; +} + +static int +fm10k_dev_rx_init(struct rte_eth_dev *dev) +{ + struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private); + int i, ret; + struct fm10k_rx_queue *rxq; + uint64_t base_addr; + uint32_t size; + uint32_t rxdctl = FM10K_RXDCTL_WRITE_BACK_MIN_DELAY; + uint16_t buf_size; + struct rte_pktmbuf_pool_private *mbp_priv; + + /* Disable RXINT to avoid possible interrupt */ + for (i = 0; i < hw->mac.max_queues; i++) + FM10K_WRITE_REG(hw, FM10K_RXINT(i), + 3 << FM10K_RXINT_TIMER_SHIFT); + + /* Setup RX queues */ + for (i = 0; i < dev->data->nb_rx_queues; ++i) { + rxq = dev->data->rx_queues[i]; + base_addr = rxq->hw_ring_phys_addr; + size = rxq->nb_desc * sizeof(union fm10k_rx_desc); + + /* disable queue to avoid issues while updating state */ + ret = rx_queue_disable(hw, i); + if (ret) { + PMD_INIT_LOG(ERR, "failed to disable queue %d", i); + return -1; + } + + /* Setup the Base and Length of the Rx Descriptor Ring */ + FM10K_WRITE_REG(hw, FM10K_RDBAL(i), + base_addr & UINT64_LOWER_32BITS_MASK); + FM10K_WRITE_REG(hw, FM10K_RDBAH(i), + base_addr >> (CHAR_BIT * sizeof(uint32_t))); + FM10K_WRITE_REG(hw, FM10K_RDLEN(i), size); + + /* Configure the Rx buffer size for one buff without split */ + mbp_priv = rte_mempool_get_priv(rxq->mp); + buf_size = (uint16_t) (mbp_priv->mbuf_data_room_size - + RTE_PKTMBUF_HEADROOM); + FM10K_WRITE_REG(hw, FM10K_SRRCTL(i), + buf_size >> FM10K_SRRCTL_BSIZEPKT_SHIFT); + + /* Enable drop on empty, it's RO for VF */ + if (hw->mac.type == fm10k_mac_pf && rxq->drop_en) + rxdctl |= FM10K_RXDCTL_DROP_ON_EMPTY; + + FM10K_WRITE_REG(hw, FM10K_RXDCTL(i), rxdctl); + FM10K_WRITE_FLUSH(hw); + } + + return 0; +} + static int fm10k_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) { @@ -379,6 +474,125 @@ fm10k_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) return 0; } +/* fls = find last set bit = 32 minus the number of leading zeros */ +#ifndef fls +#define fls(x) (((x) == 0) ? 0 : (32 - __builtin_clz((x)))) +#endif +#define BSIZEPKT_ROUNDUP ((1 << FM10K_SRRCTL_BSIZEPKT_SHIFT) - 1) +static int +fm10k_dev_start(struct rte_eth_dev *dev) +{ + struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private); + int i, diag; + + PMD_INIT_FUNC_TRACE(); + + /* stop, init, then start the hw */ + diag = fm10k_stop_hw(hw); + if (diag != FM10K_SUCCESS) { + PMD_INIT_LOG(ERR, "Hardware stop failed: %d", diag); + return -EIO; + } + + diag = fm10k_init_hw(hw); + if (diag != FM10K_SUCCESS) { + PMD_INIT_LOG(ERR, "Hardware init failed: %d", diag); + return -EIO; + } + + diag = fm10k_start_hw(hw); + if (diag != FM10K_SUCCESS) { + PMD_INIT_LOG(ERR, "Hardware start failed: %d", diag); + return -EIO; + } + + diag = fm10k_dev_tx_init(dev); + if (diag) { + PMD_INIT_LOG(ERR, "TX init failed: %d", diag); + return diag; + } + + diag = fm10k_dev_rx_init(dev); + if (diag) { + PMD_INIT_LOG(ERR, "RX init failed: %d", diag); + return diag; + } + + if (hw->mac.type == fm10k_mac_pf) { + /* Establish only VSI 0 as valid */ + FM10K_WRITE_REG(hw, FM10K_DGLORTMAP(0), FM10K_DGLORTMAP_ANY); + + /* Configure RSS bits used in RETA table */ + FM10K_WRITE_REG(hw, FM10K_DGLORTDEC(0), + fls(dev->data->nb_rx_queues - 1) << + FM10K_DGLORTDEC_RSSLENGTH_SHIFT); + + /* Invalidate all other GLORT entries */ + for (i = 1; i < FM10K_DGLORT_COUNT; i++) + FM10K_WRITE_REG(hw, FM10K_DGLORTMAP(i), + FM10K_DGLORTMAP_NONE); + } + + for (i = 0; i < dev->data->nb_rx_queues; i++) { + struct fm10k_rx_queue *rxq; + rxq = dev->data->rx_queues[i]; + + if (rxq->rx_deferred_start) + continue; + diag = fm10k_dev_rx_queue_start(dev, i); + if (diag != 0) { + int j; + for (j = 0; j < i; ++j) + rx_queue_clean(dev->data->rx_queues[j]); + return diag; + } + } + + for (i = 0; i < dev->data->nb_tx_queues; i++) { + struct fm10k_tx_queue *txq; + txq = dev->data->tx_queues[i]; + + if (txq->tx_deferred_start) + continue; + diag = fm10k_dev_tx_queue_start(dev, i); + if (diag != 0) { + int j; + for (j = 0; j < dev->data->nb_rx_queues; ++j) + rx_queue_clean(dev->data->rx_queues[j]); + return diag; + } + } + + return 0; +} + +static void +fm10k_dev_stop(struct rte_eth_dev *dev) +{ + int i; + + PMD_INIT_FUNC_TRACE(); + + for (i = 0; i < dev->data->nb_tx_queues; i++) + fm10k_dev_tx_queue_stop(dev, i); + + for (i = 0; i < dev->data->nb_rx_queues; i++) + fm10k_dev_rx_queue_stop(dev, i); +} + +static void +fm10k_dev_close(struct rte_eth_dev *dev) +{ + struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + PMD_INIT_FUNC_TRACE(); + + /* Stop mailbox service first */ + fm10k_close_mbx_service(hw); + fm10k_dev_stop(dev); + fm10k_stop_hw(hw); +} + static int fm10k_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) @@ -992,8 +1206,18 @@ fm10k_setup_mbx_service(struct fm10k_hw *hw) return hw->mbx.ops.connect(hw, &hw->mbx); } +static void +fm10k_close_mbx_service(struct fm10k_hw *hw) +{ + /* Disconnect from SM for PF device or PF for VF device */ + hw->mbx.ops.disconnect(hw, &hw->mbx); +} + static struct eth_dev_ops fm10k_eth_dev_ops = { .dev_configure = fm10k_dev_configure, + .dev_start = fm10k_dev_start, + .dev_stop = fm10k_dev_stop, + .dev_close = fm10k_dev_close, .stats_get = fm10k_stats_get, .stats_reset = fm10k_stats_reset, .link_update = fm10k_link_update,