diff options
| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2021-11-15 12:21:11 +0100 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2022-03-13 09:45:36 +0100 |
| commit | 656fc12ddaf8fbd126c2a56d50a9e226379cb2b0 (patch) | |
| tree | 39a28b869802b8c048913d00d44f5de40e425c95 /drivers/net/can | |
| parent | can: mcp251xfd: add TX IRQ coalescing support (diff) | |
| download | linux-656fc12ddaf8fbd126c2a56d50a9e226379cb2b0.tar.xz linux-656fc12ddaf8fbd126c2a56d50a9e226379cb2b0.zip | |
can: mcp251xfd: add TX IRQ coalescing ethtool support
This patch adds support ethtool based configuration for the TX IRQ
coalescing added in the previous patch.
Link: https://lore.kernel.org/20220313083640.501791-12-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/spi/mcp251xfd/mcp251xfd-ethtool.c | 23 | ||||
| -rw-r--r-- | drivers/net/can/spi/mcp251xfd/mcp251xfd-ring.c | 1 | ||||
| -rw-r--r-- | drivers/net/can/spi/mcp251xfd/mcp251xfd.h | 1 |
3 files changed, 22 insertions, 3 deletions
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-ethtool.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-ethtool.c index 6e49cf3411a2..6c7a57f16cc6 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-ethtool.c +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-ethtool.c @@ -58,7 +58,7 @@ static int mcp251xfd_ring_get_coalesce(struct net_device *ndev, struct netlink_ext_ack *ext_ack) { struct mcp251xfd_priv *priv = netdev_priv(ndev); - u32 rx_max_frames; + u32 rx_max_frames, tx_max_frames; /* The ethtool doc says: * To disable coalescing, set usecs = 0 and max_frames = 1. @@ -71,6 +71,14 @@ static int mcp251xfd_ring_get_coalesce(struct net_device *ndev, ec->rx_max_coalesced_frames_irq = rx_max_frames; ec->rx_coalesce_usecs_irq = priv->rx_coalesce_usecs_irq; + if (priv->tx_obj_num_coalesce_irq == 0) + tx_max_frames = 1; + else + tx_max_frames = priv->tx_obj_num_coalesce_irq; + + ec->tx_max_coalesced_frames_irq = tx_max_frames; + ec->tx_coalesce_usecs_irq = priv->tx_coalesce_usecs_irq; + return 0; } @@ -90,21 +98,28 @@ static int mcp251xfd_ring_set_coalesce(struct net_device *ndev, can_ram_get_layout(&layout, &mcp251xfd_ram_config, &ring, ec, fd_mode); if ((layout.rx_coalesce != priv->rx_obj_num_coalesce_irq || - ec->rx_coalesce_usecs_irq != priv->rx_coalesce_usecs_irq) && + ec->rx_coalesce_usecs_irq != priv->rx_coalesce_usecs_irq || + layout.tx_coalesce != priv->tx_obj_num_coalesce_irq || + ec->tx_coalesce_usecs_irq != priv->tx_coalesce_usecs_irq) && netif_running(ndev)) return -EBUSY; priv->rx_obj_num = layout.cur_rx; priv->rx_obj_num_coalesce_irq = layout.rx_coalesce; priv->rx_coalesce_usecs_irq = ec->rx_coalesce_usecs_irq; + priv->tx->obj_num = layout.cur_tx; + priv->tx_obj_num_coalesce_irq = layout.tx_coalesce; + priv->tx_coalesce_usecs_irq = ec->tx_coalesce_usecs_irq; return 0; } static const struct ethtool_ops mcp251xfd_ethtool_ops = { .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS_IRQ | - ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ, + ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ | + ETHTOOL_COALESCE_TX_USECS_IRQ | + ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ, .get_ringparam = mcp251xfd_ring_get_ringparam, .set_ringparam = mcp251xfd_ring_set_ringparam, .get_coalesce = mcp251xfd_ring_get_coalesce, @@ -122,5 +137,7 @@ void mcp251xfd_ethtool_init(struct mcp251xfd_priv *priv) priv->tx->obj_num = layout.default_tx; priv->rx_obj_num_coalesce_irq = 0; + priv->tx_obj_num_coalesce_irq = 0; priv->rx_coalesce_usecs_irq = 0; + priv->tx_coalesce_usecs_irq = 0; } diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-ring.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-ring.c index 3037ad3dd46b..bf3f0f150199 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-ring.c +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-ring.c @@ -442,6 +442,7 @@ const struct can_ram_config mcp251xfd_ram_config = { .def[CAN_RAM_MODE_CANFD] = MCP251XFD_TX_OBJ_NUM_CANFD_DEFAULT, .fifo_num = MCP251XFD_FIFO_TX_NUM, .fifo_depth_min = MCP251XFD_TX_FIFO_DEPTH_MIN, + .fifo_depth_coalesce_min = MCP251XFD_TX_FIFO_DEPTH_COALESCE_MIN, }, .size = MCP251XFD_RAM_SIZE, .fifo_depth = MCP251XFD_FIFO_DEPTH, diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h index ee2c93ddc5ed..c6cb8c3391b3 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h @@ -413,6 +413,7 @@ static_assert(MCP251XFD_TIMESTAMP_WORK_DELAY_SEC < #define MCP251XFD_TX_OBJ_NUM_CAN_DEFAULT 8U #define MCP251XFD_TX_OBJ_NUM_CANFD_DEFAULT 4U #define MCP251XFD_TX_FIFO_DEPTH_MIN 2U +#define MCP251XFD_TX_FIFO_DEPTH_COALESCE_MIN 2U static_assert(MCP251XFD_FIFO_TEF_NUM == 1U); static_assert(MCP251XFD_FIFO_TEF_NUM == MCP251XFD_FIFO_TX_NUM); |