Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Mohamad Haj Yahia | 1275 | 93.54% | 1 | 14.29% |
Mark Bloch | 39 | 2.86% | 1 | 14.29% |
Huy Nguyen | 26 | 1.91% | 2 | 28.57% |
Daniel Jurgens | 16 | 1.17% | 1 | 14.29% |
Saeed Mahameed | 4 | 0.29% | 1 | 14.29% |
Erez Shitrit | 3 | 0.22% | 1 | 14.29% |
Total | 1363 | 7 |
/* * Copyright (c) 2013-2015, 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/mlx5/driver.h> #include "mlx5_core.h" static LIST_HEAD(intf_list); static LIST_HEAD(mlx5_dev_list); /* intf dev list mutex */ static DEFINE_MUTEX(mlx5_intf_mutex); struct mlx5_device_context { struct list_head list; struct mlx5_interface *intf; void *context; unsigned long state; }; enum { MLX5_INTERFACE_ADDED, MLX5_INTERFACE_ATTACHED, }; void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv) { struct mlx5_device_context *dev_ctx; struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv); if (!mlx5_lag_intf_add(intf, priv)) return; dev_ctx = kzalloc(sizeof(*dev_ctx), GFP_KERNEL); if (!dev_ctx) return; dev_ctx->intf = intf; dev_ctx->context = intf->add(dev); if (dev_ctx->context) { set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); if (intf->attach) set_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state); spin_lock_irq(&priv->ctx_lock); list_add_tail(&dev_ctx->list, &priv->ctx_list); spin_unlock_irq(&priv->ctx_lock); } if (!dev_ctx->context) kfree(dev_ctx); } static struct mlx5_device_context *mlx5_get_device(struct mlx5_interface *intf, struct mlx5_priv *priv) { struct mlx5_device_context *dev_ctx; list_for_each_entry(dev_ctx, &priv->ctx_list, list) if (dev_ctx->intf == intf) return dev_ctx; return NULL; } void mlx5_remove_device(struct mlx5_interface *intf, struct mlx5_priv *priv) { struct mlx5_device_context *dev_ctx; struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv); dev_ctx = mlx5_get_device(intf, priv); if (!dev_ctx) return; spin_lock_irq(&priv->ctx_lock); list_del(&dev_ctx->list); spin_unlock_irq(&priv->ctx_lock); if (test_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state)) intf->remove(dev, dev_ctx->context); kfree(dev_ctx); } static void mlx5_attach_interface(struct mlx5_interface *intf, struct mlx5_priv *priv) { struct mlx5_device_context *dev_ctx; struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv); dev_ctx = mlx5_get_device(intf, priv); if (!dev_ctx) return; if (intf->attach) { if (test_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state)) return; if (intf->attach(dev, dev_ctx->context)) return; set_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state); } else { if (test_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state)) return; dev_ctx->context = intf->add(dev); if (!dev_ctx->context) return; set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); } } void mlx5_attach_device(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; struct mlx5_interface *intf; mutex_lock(&mlx5_intf_mutex); list_for_each_entry(intf, &intf_list, list) mlx5_attach_interface(intf, priv); mutex_unlock(&mlx5_intf_mutex); } static void mlx5_detach_interface(struct mlx5_interface *intf, struct mlx5_priv *priv) { struct mlx5_device_context *dev_ctx; struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv); dev_ctx = mlx5_get_device(intf, priv); if (!dev_ctx) return; if (intf->detach) { if (!test_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state)) return; intf->detach(dev, dev_ctx->context); clear_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state); } else { if (!test_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state)) return; intf->remove(dev, dev_ctx->context); clear_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); } } void mlx5_detach_device(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; struct mlx5_interface *intf; mutex_lock(&mlx5_intf_mutex); list_for_each_entry(intf, &intf_list, list) mlx5_detach_interface(intf, priv); mutex_unlock(&mlx5_intf_mutex); } bool mlx5_device_registered(struct mlx5_core_dev *dev) { struct mlx5_priv *priv; bool found = false; mutex_lock(&mlx5_intf_mutex); list_for_each_entry(priv, &mlx5_dev_list, dev_list) if (priv == &dev->priv) found = true; mutex_unlock(&mlx5_intf_mutex); return found; } int mlx5_register_device(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; struct mlx5_interface *intf; mutex_lock(&mlx5_intf_mutex); list_add_tail(&priv->dev_list, &mlx5_dev_list); list_for_each_entry(intf, &intf_list, list) mlx5_add_device(intf, priv); mutex_unlock(&mlx5_intf_mutex); return 0; } void mlx5_unregister_device(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; struct mlx5_interface *intf; mutex_lock(&mlx5_intf_mutex); list_for_each_entry(intf, &intf_list, list) mlx5_remove_device(intf, priv); list_del(&priv->dev_list); mutex_unlock(&mlx5_intf_mutex); } int mlx5_register_interface(struct mlx5_interface *intf) { struct mlx5_priv *priv; if (!intf->add || !intf->remove) return -EINVAL; mutex_lock(&mlx5_intf_mutex); list_add_tail(&intf->list, &intf_list); list_for_each_entry(priv, &mlx5_dev_list, dev_list) mlx5_add_device(intf, priv); mutex_unlock(&mlx5_intf_mutex); return 0; } EXPORT_SYMBOL(mlx5_register_interface); void mlx5_unregister_interface(struct mlx5_interface *intf) { struct mlx5_priv *priv; mutex_lock(&mlx5_intf_mutex); list_for_each_entry(priv, &mlx5_dev_list, dev_list) mlx5_remove_device(intf, priv); list_del(&intf->list); mutex_unlock(&mlx5_intf_mutex); } EXPORT_SYMBOL(mlx5_unregister_interface); void mlx5_reload_interface(struct mlx5_core_dev *mdev, int protocol) { mutex_lock(&mlx5_intf_mutex); mlx5_remove_dev_by_protocol(mdev, protocol); mlx5_add_dev_by_protocol(mdev, protocol); mutex_unlock(&mlx5_intf_mutex); } /* Must be called with intf_mutex held */ void mlx5_add_dev_by_protocol(struct mlx5_core_dev *dev, int protocol) { struct mlx5_interface *intf; list_for_each_entry(intf, &intf_list, list) if (intf->protocol == protocol) { mlx5_add_device(intf, &dev->priv); break; } } /* Must be called with intf_mutex held */ void mlx5_remove_dev_by_protocol(struct mlx5_core_dev *dev, int protocol) { struct mlx5_interface *intf; list_for_each_entry(intf, &intf_list, list) if (intf->protocol == protocol) { mlx5_remove_device(intf, &dev->priv); break; } } static u32 mlx5_gen_pci_id(struct mlx5_core_dev *dev) { return (u32)((pci_domain_nr(dev->pdev->bus) << 16) | (dev->pdev->bus->number << 8) | PCI_SLOT(dev->pdev->devfn)); } /* Must be called with intf_mutex held */ struct mlx5_core_dev *mlx5_get_next_phys_dev(struct mlx5_core_dev *dev) { u32 pci_id = mlx5_gen_pci_id(dev); struct mlx5_core_dev *res = NULL; struct mlx5_core_dev *tmp_dev; struct mlx5_priv *priv; list_for_each_entry(priv, &mlx5_dev_list, dev_list) { tmp_dev = container_of(priv, struct mlx5_core_dev, priv); if ((dev != tmp_dev) && (mlx5_gen_pci_id(tmp_dev) == pci_id)) { res = tmp_dev; break; } } return res; } void mlx5_dev_list_lock(void) { mutex_lock(&mlx5_intf_mutex); } void mlx5_dev_list_unlock(void) { mutex_unlock(&mlx5_intf_mutex); } int mlx5_dev_list_trylock(void) { return mutex_trylock(&mlx5_intf_mutex); }
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