linux/drivers/misc/dw-xdata-pcie.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2020 Synopsys, Inc. and/or its affiliates.
 * Synopsys DesignWare xData driver
 *
 * Author: Gustavo Pimentel <[email protected]>
 */

#include <linux/miscdevice.h>
#include <linux/bitfield.h>
#include <linux/pci-epf.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/bitops.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/pci.h>

#define DW_XDATA_DRIVER_NAME …

#define DW_XDATA_EP_MEM_OFFSET …

static DEFINE_IDA(xdata_ida);

#define STATUS_DONE …

#define CONTROL_DOORBELL …
#define CONTROL_IS_WRITE …
#define CONTROL_LENGTH(a) …
#define CONTROL_PATTERN_INC …
#define CONTROL_NO_ADDR_INC …

#define XPERF_CONTROL_ENABLE …

#define BURST_REPEAT …
#define BURST_VALUE …

#define PATTERN_VALUE …

struct dw_xdata_regs { … } __packed;

struct dw_xdata_region { … };

struct dw_xdata { … };

static inline struct dw_xdata_regs __iomem *__dw_regs(struct dw_xdata *dw)
{ … }

static void dw_xdata_stop(struct dw_xdata *dw)
{ … }

static void dw_xdata_start(struct dw_xdata *dw, bool write)
{ … }

static void dw_xdata_perf_meas(struct dw_xdata *dw, u64 *data, bool write)
{ … }

static u64 dw_xdata_perf_diff(u64 *m1, u64 *m2, u64 time)
{ … }

static void dw_xdata_perf(struct dw_xdata *dw, u64 *rate, bool write)
{ … }

static struct dw_xdata *misc_dev_to_dw(struct miscdevice *misc_dev)
{ … }

static ssize_t write_show(struct device *dev, struct device_attribute *attr,
			  char *buf)
{ … }

static ssize_t write_store(struct device *dev, struct device_attribute *attr,
			   const char *buf, size_t size)
{ … }

static DEVICE_ATTR_RW(write);

static ssize_t read_show(struct device *dev, struct device_attribute *attr,
			 char *buf)
{ … }

static ssize_t read_store(struct device *dev, struct device_attribute *attr,
			  const char *buf, size_t size)
{ … }

static DEVICE_ATTR_RW(read);

static struct attribute *xdata_attrs[] = …;

ATTRIBUTE_GROUPS(…);

static int dw_xdata_pcie_probe(struct pci_dev *pdev,
			       const struct pci_device_id *pid)
{ … }

static void dw_xdata_pcie_remove(struct pci_dev *pdev)
{ … }

static const struct pci_device_id dw_xdata_pcie_id_table[] = …;
MODULE_DEVICE_TABLE(pci, dw_xdata_pcie_id_table);

static struct pci_driver dw_xdata_pcie_driver = …;

module_pci_driver(…) …;

MODULE_LICENSE(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;