linux/drivers/pci/pcie/rcec.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Root Complex Event Collector Support
 *
 * Authors:
 *  Sean V Kelley <[email protected]>
 *  Qiuxu Zhuo <[email protected]>
 *
 * Copyright (C) 2020 Intel Corp.
 */

#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pci_regs.h>

#include "../pci.h"

struct walk_rcec_data { … };

static bool rcec_assoc_rciep(struct pci_dev *rcec, struct pci_dev *rciep)
{ … }

static int link_rcec_helper(struct pci_dev *dev, void *data)
{ … }

static int walk_rcec_helper(struct pci_dev *dev, void *data)
{ … }

static void walk_rcec(int (*cb)(struct pci_dev *dev, void *data),
		      void *userdata)
{ … }

/**
 * pcie_link_rcec - Link RCiEP devices associated with RCEC.
 * @rcec: RCEC whose RCiEP devices should be linked.
 *
 * Link the given RCEC to each RCiEP device found.
 */
void pcie_link_rcec(struct pci_dev *rcec)
{ … }

/**
 * pcie_walk_rcec - Walk RCiEP devices associating with RCEC and call callback.
 * @rcec:	RCEC whose RCiEP devices should be walked
 * @cb:		Callback to be called for each RCiEP device found
 * @userdata:	Arbitrary pointer to be passed to callback
 *
 * Walk the given RCEC. Call the callback on each RCiEP found.
 *
 * If @cb returns anything other than 0, break out.
 */
void pcie_walk_rcec(struct pci_dev *rcec, int (*cb)(struct pci_dev *, void *),
		    void *userdata)
{ … }

void pci_rcec_init(struct pci_dev *dev)
{ … }

void pci_rcec_exit(struct pci_dev *dev)
{ … }