diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/can/flexcan/flexcan-ethtool.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/can/flexcan/flexcan-ethtool.c')
-rw-r--r-- | drivers/net/can/flexcan/flexcan-ethtool.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/net/can/flexcan/flexcan-ethtool.c b/drivers/net/can/flexcan/flexcan-ethtool.c new file mode 100644 index 000000000..50e86b2da --- /dev/null +++ b/drivers/net/can/flexcan/flexcan-ethtool.c @@ -0,0 +1,110 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Copyright (c) 2022 Amarula Solutions, Dario Binacchi <dario.binacchi@amarulasolutions.com> + * Copyright (c) 2022 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de> + * + */ + +#include <linux/can/dev.h> +#include <linux/ethtool.h> +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/platform_device.h> + +#include "flexcan.h" + +static const char flexcan_priv_flags_strings[][ETH_GSTRING_LEN] = { +#define FLEXCAN_PRIV_FLAGS_RX_RTR BIT(0) + "rx-rtr", +}; + +static void +flexcan_get_ringparam(struct net_device *ndev, struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kernel_ring, + struct netlink_ext_ack *ext_ack) +{ + const struct flexcan_priv *priv = netdev_priv(ndev); + + ring->rx_max_pending = priv->mb_count; + ring->tx_max_pending = priv->mb_count; + + if (priv->devtype_data.quirks & FLEXCAN_QUIRK_USE_RX_MAILBOX) + ring->rx_pending = priv->offload.mb_last - + priv->offload.mb_first + 1; + else + ring->rx_pending = 6; /* RX-FIFO depth is fixed */ + + /* the drive currently supports only on TX buffer */ + ring->tx_pending = 1; +} + +static void +flexcan_get_strings(struct net_device *ndev, u32 stringset, u8 *data) +{ + switch (stringset) { + case ETH_SS_PRIV_FLAGS: + memcpy(data, flexcan_priv_flags_strings, + sizeof(flexcan_priv_flags_strings)); + } +} + +static u32 flexcan_get_priv_flags(struct net_device *ndev) +{ + const struct flexcan_priv *priv = netdev_priv(ndev); + u32 priv_flags = 0; + + if (flexcan_active_rx_rtr(priv)) + priv_flags |= FLEXCAN_PRIV_FLAGS_RX_RTR; + + return priv_flags; +} + +static int flexcan_set_priv_flags(struct net_device *ndev, u32 priv_flags) +{ + struct flexcan_priv *priv = netdev_priv(ndev); + u32 quirks = priv->devtype_data.quirks; + + if (priv_flags & FLEXCAN_PRIV_FLAGS_RX_RTR) { + if (flexcan_supports_rx_mailbox_rtr(priv)) + quirks |= FLEXCAN_QUIRK_USE_RX_MAILBOX; + else if (flexcan_supports_rx_fifo(priv)) + quirks &= ~FLEXCAN_QUIRK_USE_RX_MAILBOX; + else + quirks |= FLEXCAN_QUIRK_USE_RX_MAILBOX; + } else { + if (flexcan_supports_rx_mailbox(priv)) + quirks |= FLEXCAN_QUIRK_USE_RX_MAILBOX; + else + quirks &= ~FLEXCAN_QUIRK_USE_RX_MAILBOX; + } + + if (quirks != priv->devtype_data.quirks && netif_running(ndev)) + return -EBUSY; + + priv->devtype_data.quirks = quirks; + + if (!(priv_flags & FLEXCAN_PRIV_FLAGS_RX_RTR) && + !flexcan_active_rx_rtr(priv)) + netdev_info(ndev, + "Activating RX mailbox mode, cannot receive RTR frames.\n"); + + return 0; +} + +static int flexcan_get_sset_count(struct net_device *netdev, int sset) +{ + switch (sset) { + case ETH_SS_PRIV_FLAGS: + return ARRAY_SIZE(flexcan_priv_flags_strings); + default: + return -EOPNOTSUPP; + } +} + +const struct ethtool_ops flexcan_ethtool_ops = { + .get_ringparam = flexcan_get_ringparam, + .get_strings = flexcan_get_strings, + .get_priv_flags = flexcan_get_priv_flags, + .set_priv_flags = flexcan_set_priv_flags, + .get_sset_count = flexcan_get_sset_count, + .get_ts_info = ethtool_op_get_ts_info, +}; |