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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/net/ethernet/mellanox/mlx4/en_main.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/en_main.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_main.c435
1 files changed, 435 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_main.c b/drivers/net/ethernet/mellanox/mlx4/en_main.c
new file mode 100644
index 0000000000..d8f4d00ad2
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx4/en_main.c
@@ -0,0 +1,435 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/cpumask.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/slab.h>
+
+#include <linux/mlx4/driver.h>
+#include <linux/mlx4/device.h>
+#include <linux/mlx4/cmd.h>
+
+#include "mlx4_en.h"
+
+MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin");
+MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(DRV_VERSION);
+
+static const char mlx4_en_version[] =
+ DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v"
+ DRV_VERSION "\n";
+
+#define MLX4_EN_PARM_INT(X, def_val, desc) \
+ static unsigned int X = def_val;\
+ module_param(X , uint, 0444); \
+ MODULE_PARM_DESC(X, desc);
+
+
+/*
+ * Device scope module parameters
+ */
+
+/* Enable RSS UDP traffic */
+MLX4_EN_PARM_INT(udp_rss, 1,
+ "Enable RSS for incoming UDP traffic or disabled (0)");
+
+/* Priority pausing */
+MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
+ " Per priority bit mask");
+MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
+ " Per priority bit mask");
+
+MLX4_EN_PARM_INT(inline_thold, MAX_INLINE,
+ "Threshold for using inline data (range: 17-104, default: 104)");
+
+#define MAX_PFC_TX 0xff
+#define MAX_PFC_RX 0xff
+
+void en_print(const char *level, const struct mlx4_en_priv *priv,
+ const char *format, ...)
+{
+ va_list args;
+ struct va_format vaf;
+
+ va_start(args, format);
+
+ vaf.fmt = format;
+ vaf.va = &args;
+ if (priv->registered)
+ printk("%s%s: %s: %pV",
+ level, DRV_NAME, priv->dev->name, &vaf);
+ else
+ printk("%s%s: %s: Port %d: %pV",
+ level, DRV_NAME, dev_name(&priv->mdev->pdev->dev),
+ priv->port, &vaf);
+ va_end(args);
+}
+
+void mlx4_en_update_loopback_state(struct net_device *dev,
+ netdev_features_t features)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+
+ if (features & NETIF_F_LOOPBACK)
+ priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
+ else
+ priv->ctrl_flags &= cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
+
+ priv->flags &= ~(MLX4_EN_FLAG_RX_FILTER_NEEDED|
+ MLX4_EN_FLAG_ENABLE_HW_LOOPBACK);
+
+ /* Drop the packet if SRIOV is not enabled
+ * and not performing the selftest or flb disabled
+ */
+ if (mlx4_is_mfunc(priv->mdev->dev) &&
+ !(features & NETIF_F_LOOPBACK) && !priv->validate_loopback)
+ priv->flags |= MLX4_EN_FLAG_RX_FILTER_NEEDED;
+
+ /* Set dmac in Tx WQE if we are in SRIOV mode or if loopback selftest
+ * is requested
+ */
+ if (mlx4_is_mfunc(priv->mdev->dev) || priv->validate_loopback)
+ priv->flags |= MLX4_EN_FLAG_ENABLE_HW_LOOPBACK;
+
+ mutex_lock(&priv->mdev->state_lock);
+ if ((priv->mdev->dev->caps.flags2 &
+ MLX4_DEV_CAP_FLAG2_UPDATE_QP_SRC_CHECK_LB) &&
+ priv->rss_map.indir_qp && priv->rss_map.indir_qp->qpn) {
+ int i;
+ int err = 0;
+ int loopback = !!(features & NETIF_F_LOOPBACK);
+
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ int ret;
+
+ ret = mlx4_en_change_mcast_lb(priv,
+ &priv->rss_map.qps[i],
+ loopback);
+ if (!err)
+ err = ret;
+ }
+ if (err)
+ mlx4_warn(priv->mdev, "failed to change mcast loopback\n");
+ }
+ mutex_unlock(&priv->mdev->state_lock);
+}
+
+static void mlx4_en_get_profile(struct mlx4_en_dev *mdev)
+{
+ struct mlx4_en_profile *params = &mdev->profile;
+ int i;
+
+ params->udp_rss = udp_rss;
+ params->max_num_tx_rings_p_up = mlx4_low_memory_profile() ?
+ MLX4_EN_MIN_TX_RING_P_UP :
+ min_t(int, num_online_cpus(), MLX4_EN_MAX_TX_RING_P_UP);
+
+ if (params->udp_rss && !(mdev->dev->caps.flags
+ & MLX4_DEV_CAP_FLAG_UDP_RSS)) {
+ mlx4_warn(mdev, "UDP RSS is not supported on this device\n");
+ params->udp_rss = 0;
+ }
+ for (i = 1; i <= MLX4_MAX_PORTS; i++) {
+ params->prof[i].rx_pause = !(pfcrx || pfctx);
+ params->prof[i].rx_ppp = pfcrx;
+ params->prof[i].tx_pause = !(pfcrx || pfctx);
+ params->prof[i].tx_ppp = pfctx;
+ if (mlx4_low_memory_profile()) {
+ params->prof[i].tx_ring_size = MLX4_EN_MIN_TX_SIZE;
+ params->prof[i].rx_ring_size = MLX4_EN_MIN_RX_SIZE;
+ } else {
+ params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
+ params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
+ }
+ params->prof[i].num_up = MLX4_EN_NUM_UP_LOW;
+ params->prof[i].num_tx_rings_p_up = params->max_num_tx_rings_p_up;
+ params->prof[i].tx_ring_num[TX] = params->max_num_tx_rings_p_up *
+ params->prof[i].num_up;
+ params->prof[i].rss_rings = 0;
+ params->prof[i].inline_thold = inline_thold;
+ }
+}
+
+static int mlx4_en_event(struct notifier_block *this, unsigned long event,
+ void *param)
+{
+ struct mlx4_en_dev *mdev =
+ container_of(this, struct mlx4_en_dev, mlx_nb);
+ struct mlx4_dev *dev = mdev->dev;
+ struct mlx4_en_priv *priv;
+ int port;
+
+ switch (event) {
+ case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
+ case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
+ case MLX4_DEV_EVENT_SLAVE_INIT:
+ case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
+ break;
+ default:
+ port = *(int *)param;
+ break;
+ }
+
+ switch (event) {
+ case MLX4_DEV_EVENT_PORT_UP:
+ case MLX4_DEV_EVENT_PORT_DOWN:
+ if (!mdev->pndev[port])
+ return NOTIFY_DONE;
+ priv = netdev_priv(mdev->pndev[port]);
+ /* To prevent races, we poll the link state in a separate
+ task rather than changing it here */
+ priv->link_state = event;
+ queue_work(mdev->workqueue, &priv->linkstate_task);
+ break;
+
+ case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
+ mlx4_err(mdev, "Internal error detected, restarting device\n");
+ break;
+
+ case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
+ case MLX4_DEV_EVENT_SLAVE_INIT:
+ case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
+ break;
+ default:
+ if (port < 1 || port > dev->caps.num_ports ||
+ !mdev->pndev[port])
+ return NOTIFY_DONE;
+ mlx4_warn(mdev, "Unhandled event %d for port %d\n", (int)event,
+ port);
+ }
+
+ return NOTIFY_DONE;
+}
+
+static void mlx4_en_remove(struct auxiliary_device *adev)
+{
+ struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
+ struct mlx4_dev *dev = madev->mdev;
+ struct mlx4_en_dev *mdev = auxiliary_get_drvdata(adev);
+ int i;
+
+ mlx4_unregister_event_notifier(dev, &mdev->mlx_nb);
+
+ mutex_lock(&mdev->state_lock);
+ mdev->device_up = false;
+ mutex_unlock(&mdev->state_lock);
+
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
+ if (mdev->pndev[i])
+ mlx4_en_destroy_netdev(mdev->pndev[i]);
+
+ destroy_workqueue(mdev->workqueue);
+ (void) mlx4_mr_free(dev, &mdev->mr);
+ iounmap(mdev->uar_map);
+ mlx4_uar_free(dev, &mdev->priv_uar);
+ mlx4_pd_free(dev, mdev->priv_pdn);
+ if (mdev->netdev_nb.notifier_call)
+ unregister_netdevice_notifier(&mdev->netdev_nb);
+ kfree(mdev);
+}
+
+static int mlx4_en_probe(struct auxiliary_device *adev,
+ const struct auxiliary_device_id *id)
+{
+ struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
+ struct mlx4_dev *dev = madev->mdev;
+ struct mlx4_en_dev *mdev;
+ int err, i;
+
+ printk_once(KERN_INFO "%s", mlx4_en_version);
+
+ mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
+ if (!mdev) {
+ err = -ENOMEM;
+ goto err_free_res;
+ }
+
+ err = mlx4_pd_alloc(dev, &mdev->priv_pdn);
+ if (err)
+ goto err_free_dev;
+
+ err = mlx4_uar_alloc(dev, &mdev->priv_uar);
+ if (err)
+ goto err_pd;
+
+ mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT,
+ PAGE_SIZE);
+ if (!mdev->uar_map) {
+ err = -ENOMEM;
+ goto err_uar;
+ }
+ spin_lock_init(&mdev->uar_lock);
+
+ mdev->dev = dev;
+ mdev->dma_device = &dev->persist->pdev->dev;
+ mdev->pdev = dev->persist->pdev;
+ mdev->device_up = false;
+
+ mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
+ if (!mdev->LSO_support)
+ mlx4_warn(mdev, "LSO not supported, please upgrade to later FW version to enable LSO\n");
+
+ err = mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
+ MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ, 0, 0,
+ &mdev->mr);
+ if (err) {
+ mlx4_err(mdev, "Failed allocating memory region\n");
+ goto err_map;
+ }
+ err = mlx4_mr_enable(mdev->dev, &mdev->mr);
+ if (err) {
+ mlx4_err(mdev, "Failed enabling memory region\n");
+ goto err_mr;
+ }
+
+ /* Build device profile according to supplied module parameters */
+ mlx4_en_get_profile(mdev);
+
+ /* Configure which ports to start according to module parameters */
+ mdev->port_cnt = 0;
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
+ mdev->port_cnt++;
+
+ /* Set default number of RX rings*/
+ mlx4_en_set_num_rx_rings(mdev);
+
+ /* Create our own workqueue for reset/multicast tasks
+ * Note: we cannot use the shared workqueue because of deadlocks caused
+ * by the rtnl lock */
+ mdev->workqueue = create_singlethread_workqueue("mlx4_en");
+ if (!mdev->workqueue) {
+ err = -ENOMEM;
+ goto err_mr;
+ }
+
+ /* At this stage all non-port specific tasks are complete:
+ * mark the card state as up */
+ mutex_init(&mdev->state_lock);
+ mdev->device_up = true;
+
+ /* register mlx4 core notifier */
+ mdev->mlx_nb.notifier_call = mlx4_en_event;
+ err = mlx4_register_event_notifier(dev, &mdev->mlx_nb);
+ WARN(err, "failed to register mlx4 event notifier (%d)", err);
+
+ /* Setup ports */
+
+ /* Create a netdev for each port */
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
+ mlx4_info(mdev, "Activating port:%d\n", i);
+ if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i]))
+ mdev->pndev[i] = NULL;
+ }
+
+ /* register netdev notifier */
+ mdev->netdev_nb.notifier_call = mlx4_en_netdev_event;
+ if (register_netdevice_notifier(&mdev->netdev_nb)) {
+ mdev->netdev_nb.notifier_call = NULL;
+ mlx4_err(mdev, "Failed to create netdev notifier\n");
+ }
+
+ auxiliary_set_drvdata(adev, mdev);
+ return 0;
+
+err_mr:
+ (void) mlx4_mr_free(dev, &mdev->mr);
+err_map:
+ if (mdev->uar_map)
+ iounmap(mdev->uar_map);
+err_uar:
+ mlx4_uar_free(dev, &mdev->priv_uar);
+err_pd:
+ mlx4_pd_free(dev, mdev->priv_pdn);
+err_free_dev:
+ kfree(mdev);
+err_free_res:
+ return err;
+}
+
+static const struct auxiliary_device_id mlx4_en_id_table[] = {
+ { .name = MLX4_ADEV_NAME ".eth" },
+ {},
+};
+
+MODULE_DEVICE_TABLE(auxiliary, mlx4_en_id_table);
+
+static struct mlx4_adrv mlx4_en_adrv = {
+ .adrv = {
+ .name = "eth",
+ .probe = mlx4_en_probe,
+ .remove = mlx4_en_remove,
+ .id_table = mlx4_en_id_table,
+ },
+ .protocol = MLX4_PROT_ETH,
+};
+
+static void mlx4_en_verify_params(void)
+{
+ if (pfctx > MAX_PFC_TX) {
+ pr_warn("mlx4_en: WARNING: illegal module parameter pfctx 0x%x - should be in range 0-0x%x, will be changed to default (0)\n",
+ pfctx, MAX_PFC_TX);
+ pfctx = 0;
+ }
+
+ if (pfcrx > MAX_PFC_RX) {
+ pr_warn("mlx4_en: WARNING: illegal module parameter pfcrx 0x%x - should be in range 0-0x%x, will be changed to default (0)\n",
+ pfcrx, MAX_PFC_RX);
+ pfcrx = 0;
+ }
+
+ if (inline_thold < MIN_PKT_LEN || inline_thold > MAX_INLINE) {
+ pr_warn("mlx4_en: WARNING: illegal module parameter inline_thold %d - should be in range %d-%d, will be changed to default (%d)\n",
+ inline_thold, MIN_PKT_LEN, MAX_INLINE, MAX_INLINE);
+ inline_thold = MAX_INLINE;
+ }
+}
+
+static int __init mlx4_en_init(void)
+{
+ mlx4_en_verify_params();
+ mlx4_en_init_ptys2ethtool_map();
+
+ return mlx4_register_auxiliary_driver(&mlx4_en_adrv);
+}
+
+static void __exit mlx4_en_cleanup(void)
+{
+ mlx4_unregister_auxiliary_driver(&mlx4_en_adrv);
+}
+
+module_init(mlx4_en_init);
+module_exit(mlx4_en_cleanup);
+