net/mlx5: Organize device list API in one place
Hide the exposed (external) mlx5_dev_list and mlx5_intf_mutex and expose an organized modular API to manage and manipulate mlx5 devices list. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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				| @ -3,7 +3,7 @@ obj-$(CONFIG_MLX5_CORE)		+= mlx5_core.o | ||||
| mlx5_core-y :=	main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
 | ||||
| 		health.o mcg.o cq.o srq.o alloc.o qp.o port.o mr.o pd.o \
 | ||||
| 		mad.o transobj.o vport.o sriov.o fs_cmd.o fs_core.o \
 | ||||
| 		fs_counters.o rl.o lag.o | ||||
| 		fs_counters.o rl.o lag.o dev.o | ||||
| 
 | ||||
| mlx5_core-$(CONFIG_MLX5_CORE_EN) += wq.o eswitch.o eswitch_offloads.o \
 | ||||
| 		en_main.o en_common.o en_fs.o en_ethtool.o en_tx.o \
 | ||||
|  | ||||
							
								
								
									
										345
									
								
								drivers/net/ethernet/mellanox/mlx5/core/dev.c
									
									
									
									
									
										Normal file
									
								
							
							
						
						
									
										345
									
								
								drivers/net/ethernet/mellanox/mlx5/core/dev.c
									
									
									
									
									
										Normal file
									
								
							| @ -0,0 +1,345 @@ | ||||
| /*
 | ||||
|  * 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); | ||||
| 	set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); | ||||
| 	if (intf->attach) | ||||
| 		set_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state); | ||||
| 
 | ||||
| 	if (dev_ctx->context) { | ||||
| 		spin_lock_irq(&priv->ctx_lock); | ||||
| 		list_add_tail(&dev_ctx->list, &priv->ctx_list); | ||||
| 		spin_unlock_irq(&priv->ctx_lock); | ||||
| 	} else { | ||||
| 		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; | ||||
| 		intf->attach(dev, dev_ctx->context); | ||||
| 		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); | ||||
| 		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_get_protocol_dev(struct mlx5_core_dev *mdev, int protocol) | ||||
| { | ||||
| 	struct mlx5_priv *priv = &mdev->priv; | ||||
| 	struct mlx5_device_context *dev_ctx; | ||||
| 	unsigned long flags; | ||||
| 	void *result = NULL; | ||||
| 
 | ||||
| 	spin_lock_irqsave(&priv->ctx_lock, flags); | ||||
| 
 | ||||
| 	list_for_each_entry(dev_ctx, &mdev->priv.ctx_list, list) | ||||
| 		if ((dev_ctx->intf->protocol == protocol) && | ||||
| 		    dev_ctx->intf->get_dev) { | ||||
| 			result = dev_ctx->intf->get_dev(dev_ctx->context); | ||||
| 			break; | ||||
| 		} | ||||
| 
 | ||||
| 	spin_unlock_irqrestore(&priv->ctx_lock, flags); | ||||
| 
 | ||||
| 	return result; | ||||
| } | ||||
| EXPORT_SYMBOL(mlx5_get_protocol_dev); | ||||
| 
 | ||||
| /* 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 u16 mlx5_gen_pci_id(struct mlx5_core_dev *dev) | ||||
| { | ||||
| 	return (u16)((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) | ||||
| { | ||||
| 	u16 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_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event, | ||||
| 		     unsigned long param) | ||||
| { | ||||
| 	struct mlx5_priv *priv = &dev->priv; | ||||
| 	struct mlx5_device_context *dev_ctx; | ||||
| 	unsigned long flags; | ||||
| 
 | ||||
| 	spin_lock_irqsave(&priv->ctx_lock, flags); | ||||
| 
 | ||||
| 	list_for_each_entry(dev_ctx, &priv->ctx_list, list) | ||||
| 		if (dev_ctx->intf->event) | ||||
| 			dev_ctx->intf->event(dev, dev_ctx->context, event, param); | ||||
| 
 | ||||
| 	spin_unlock_irqrestore(&priv->ctx_lock, flags); | ||||
| } | ||||
| 
 | ||||
| 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); | ||||
| } | ||||
| @ -277,7 +277,7 @@ static void mlx5_do_bond_work(struct work_struct *work) | ||||
| 					     bond_work); | ||||
| 	int status; | ||||
| 
 | ||||
| 	status = mutex_trylock(&mlx5_intf_mutex); | ||||
| 	status = mlx5_dev_list_trylock(); | ||||
| 	if (!status) { | ||||
| 		/* 1 sec delay. */ | ||||
| 		mlx5_queue_bond_work(ldev, HZ); | ||||
| @ -285,7 +285,7 @@ static void mlx5_do_bond_work(struct work_struct *work) | ||||
| 	} | ||||
| 
 | ||||
| 	mlx5_do_bond(ldev); | ||||
| 	mutex_unlock(&mlx5_intf_mutex); | ||||
| 	mlx5_dev_list_unlock(); | ||||
| } | ||||
| 
 | ||||
| static int mlx5_handle_changeupper_event(struct mlx5_lag *ldev, | ||||
| @ -466,35 +466,21 @@ static void mlx5_lag_dev_remove_pf(struct mlx5_lag *ldev, | ||||
| 	mutex_unlock(&lag_mutex); | ||||
| } | ||||
| 
 | ||||
| static u16 mlx5_gen_pci_id(struct mlx5_core_dev *dev) | ||||
| { | ||||
| 	return (u16)((dev->pdev->bus->number << 8) | | ||||
| 		     PCI_SLOT(dev->pdev->devfn)); | ||||
| } | ||||
| 
 | ||||
| /* Must be called with intf_mutex held */ | ||||
| void mlx5_lag_add(struct mlx5_core_dev *dev, struct net_device *netdev) | ||||
| { | ||||
| 	struct mlx5_lag *ldev = NULL; | ||||
| 	struct mlx5_core_dev *tmp_dev; | ||||
| 	struct mlx5_priv *priv; | ||||
| 	u16 pci_id; | ||||
| 
 | ||||
| 	if (!MLX5_CAP_GEN(dev, vport_group_manager) || | ||||
| 	    !MLX5_CAP_GEN(dev, lag_master) || | ||||
| 	    (MLX5_CAP_GEN(dev, num_lag_ports) != MLX5_MAX_PORTS)) | ||||
| 		return; | ||||
| 
 | ||||
| 	pci_id = mlx5_gen_pci_id(dev); | ||||
| 
 | ||||
| 	mlx5_core_for_each_priv(priv) { | ||||
| 		tmp_dev = container_of(priv, struct mlx5_core_dev, priv); | ||||
| 		if ((dev != tmp_dev) && | ||||
| 		    (mlx5_gen_pci_id(tmp_dev) == pci_id)) { | ||||
| 			ldev = tmp_dev->priv.lag; | ||||
| 			break; | ||||
| 		} | ||||
| 	} | ||||
| 	tmp_dev = mlx5_get_next_phys_dev(dev); | ||||
| 	if (tmp_dev) | ||||
| 		ldev = tmp_dev->priv.lag; | ||||
| 
 | ||||
| 	if (!ldev) { | ||||
| 		ldev = mlx5_lag_dev_alloc(); | ||||
|  | ||||
| @ -72,18 +72,6 @@ static int prof_sel = MLX5_DEFAULT_PROF; | ||||
| module_param_named(prof_sel, prof_sel, int, 0444); | ||||
| MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2"); | ||||
| 
 | ||||
| static LIST_HEAD(intf_list); | ||||
| 
 | ||||
| LIST_HEAD(mlx5_dev_list); | ||||
| DEFINE_MUTEX(mlx5_intf_mutex); | ||||
| 
 | ||||
| struct mlx5_device_context { | ||||
| 	struct list_head	list; | ||||
| 	struct mlx5_interface  *intf; | ||||
| 	void		       *context; | ||||
| 	unsigned long		state; | ||||
| }; | ||||
| 
 | ||||
| enum { | ||||
| 	MLX5_ATOMIC_REQ_MODE_BE = 0x0, | ||||
| 	MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS = 0x1, | ||||
| @ -779,248 +767,6 @@ static int mlx5_core_set_issi(struct mlx5_core_dev *dev) | ||||
| 	return -ENOTSUPP; | ||||
| } | ||||
| 
 | ||||
| enum { | ||||
| 	MLX5_INTERFACE_ADDED, | ||||
| 	MLX5_INTERFACE_ATTACHED, | ||||
| }; | ||||
| 
 | ||||
| static 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); | ||||
| 	set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); | ||||
| 	if (intf->attach) | ||||
| 		set_bit(MLX5_INTERFACE_ATTACHED, &dev_ctx->state); | ||||
| 
 | ||||
| 	if (dev_ctx->context) { | ||||
| 		spin_lock_irq(&priv->ctx_lock); | ||||
| 		list_add_tail(&dev_ctx->list, &priv->ctx_list); | ||||
| 		spin_unlock_irq(&priv->ctx_lock); | ||||
| 	} else { | ||||
| 		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; | ||||
| } | ||||
| 
 | ||||
| static 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; | ||||
| 		intf->attach(dev, dev_ctx->context); | ||||
| 		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); | ||||
| 		set_bit(MLX5_INTERFACE_ADDED, &dev_ctx->state); | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| static 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); | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| static 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); | ||||
| } | ||||
| 
 | ||||
| static 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; | ||||
| } | ||||
| 
 | ||||
| static 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; | ||||
| } | ||||
| 
 | ||||
| static 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_get_protocol_dev(struct mlx5_core_dev *mdev, int protocol) | ||||
| { | ||||
| 	struct mlx5_priv *priv = &mdev->priv; | ||||
| 	struct mlx5_device_context *dev_ctx; | ||||
| 	unsigned long flags; | ||||
| 	void *result = NULL; | ||||
| 
 | ||||
| 	spin_lock_irqsave(&priv->ctx_lock, flags); | ||||
| 
 | ||||
| 	list_for_each_entry(dev_ctx, &mdev->priv.ctx_list, list) | ||||
| 		if ((dev_ctx->intf->protocol == protocol) && | ||||
| 		    dev_ctx->intf->get_dev) { | ||||
| 			result = dev_ctx->intf->get_dev(dev_ctx->context); | ||||
| 			break; | ||||
| 		} | ||||
| 
 | ||||
| 	spin_unlock_irqrestore(&priv->ctx_lock, flags); | ||||
| 
 | ||||
| 	return result; | ||||
| } | ||||
| EXPORT_SYMBOL(mlx5_get_protocol_dev); | ||||
| 
 | ||||
| /* 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 int mlx5_pci_init(struct mlx5_core_dev *dev, struct mlx5_priv *priv) | ||||
| { | ||||
| @ -1446,22 +1192,6 @@ out: | ||||
| 	return err; | ||||
| } | ||||
| 
 | ||||
| void mlx5_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event, | ||||
| 		     unsigned long param) | ||||
| { | ||||
| 	struct mlx5_priv *priv = &dev->priv; | ||||
| 	struct mlx5_device_context *dev_ctx; | ||||
| 	unsigned long flags; | ||||
| 
 | ||||
| 	spin_lock_irqsave(&priv->ctx_lock, flags); | ||||
| 
 | ||||
| 	list_for_each_entry(dev_ctx, &priv->ctx_list, list) | ||||
| 		if (dev_ctx->intf->event) | ||||
| 			dev_ctx->intf->event(dev, dev_ctx->context, event, param); | ||||
| 
 | ||||
| 	spin_unlock_irqrestore(&priv->ctx_lock, flags); | ||||
| } | ||||
| 
 | ||||
| struct mlx5_core_event_handler { | ||||
| 	void (*event)(struct mlx5_core_dev *dev, | ||||
| 		      enum mlx5_dev_event event, | ||||
|  | ||||
| @ -46,9 +46,6 @@ | ||||
| 
 | ||||
| extern int mlx5_core_debug_mask; | ||||
| 
 | ||||
| extern struct list_head mlx5_dev_list; | ||||
| extern struct mutex mlx5_intf_mutex; | ||||
| 
 | ||||
| #define mlx5_core_dbg(__dev, format, ...)				\ | ||||
| 	dev_dbg(&(__dev)->pdev->dev, "%s:%s:%d:(pid %d): " format,	\ | ||||
| 		 (__dev)->priv.name, __func__, __LINE__, current->pid,	\ | ||||
| @ -73,9 +70,6 @@ do {									\ | ||||
| #define mlx5_core_info(__dev, format, ...)				\ | ||||
| 	dev_info(&(__dev)->pdev->dev, format, ##__VA_ARGS__) | ||||
| 
 | ||||
| #define mlx5_core_for_each_priv(__priv)					\ | ||||
| 	list_for_each_entry(__priv, &mlx5_dev_list, dev_list) | ||||
| 
 | ||||
| enum { | ||||
| 	MLX5_CMD_DATA, /* print command payload only */ | ||||
| 	MLX5_CMD_TIME, /* print command execution time */ | ||||
| @ -106,8 +100,19 @@ void mlx5_cq_tasklet_cb(unsigned long data); | ||||
| void mlx5_lag_add(struct mlx5_core_dev *dev, struct net_device *netdev); | ||||
| void mlx5_lag_remove(struct mlx5_core_dev *dev); | ||||
| 
 | ||||
| void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv); | ||||
| void mlx5_remove_device(struct mlx5_interface *intf, struct mlx5_priv *priv); | ||||
| void mlx5_attach_device(struct mlx5_core_dev *dev); | ||||
| void mlx5_detach_device(struct mlx5_core_dev *dev); | ||||
| bool mlx5_device_registered(struct mlx5_core_dev *dev); | ||||
| int mlx5_register_device(struct mlx5_core_dev *dev); | ||||
| void mlx5_unregister_device(struct mlx5_core_dev *dev); | ||||
| void mlx5_add_dev_by_protocol(struct mlx5_core_dev *dev, int protocol); | ||||
| void mlx5_remove_dev_by_protocol(struct mlx5_core_dev *dev, int protocol); | ||||
| struct mlx5_core_dev *mlx5_get_next_phys_dev(struct mlx5_core_dev *dev); | ||||
| void mlx5_dev_list_lock(void); | ||||
| void mlx5_dev_list_unlock(void); | ||||
| int mlx5_dev_list_trylock(void); | ||||
| 
 | ||||
| bool mlx5_lag_intf_add(struct mlx5_interface *intf, struct mlx5_priv *priv); | ||||
| 
 | ||||
|  | ||||
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