linux/drivers/fpga/tests/fpga-mgr-test.c

// SPDX-License-Identifier: GPL-2.0
/*
 * KUnit test for the FPGA Manager
 *
 * Copyright (C) 2023 Red Hat, Inc.
 *
 * Author: Marco Pagani <[email protected]>
 */

#include <kunit/device.h>
#include <kunit/test.h>
#include <linux/fpga/fpga-mgr.h>
#include <linux/module.h>
#include <linux/scatterlist.h>
#include <linux/types.h>

#define HEADER_FILL …
#define IMAGE_FILL …
#define IMAGE_BLOCK …

#define HEADER_SIZE …
#define IMAGE_SIZE …

struct mgr_stats { … };

struct mgr_ctx { … };

/**
 * init_test_buffer() - Allocate and initialize a test image in a buffer.
 * @test: KUnit test context object.
 * @count: image size in bytes.
 *
 * Return: pointer to the newly allocated image.
 */
static char *init_test_buffer(struct kunit *test, size_t count)
{ … }

/*
 * Check the image header. Do not return an error code if the image check fails
 * since, in this case, it is a failure of the FPGA manager itself, not this
 * op that tests it.
 */
static int op_parse_header(struct fpga_manager *mgr, struct fpga_image_info *info,
			   const char *buf, size_t count)
{ … }

static int op_write_init(struct fpga_manager *mgr, struct fpga_image_info *info,
			 const char *buf, size_t count)
{ … }

/*
 * Check the image data. As with op_parse_header, do not return an error code
 * if the image check fails.
 */
static int op_write(struct fpga_manager *mgr, const char *buf, size_t count)
{ … }

/*
 * Check the image data, but first skip the header since write_sg will get
 * the whole image in sg_table. As with op_parse_header, do not return an
 * error code if the image check fails.
 */
static int op_write_sg(struct fpga_manager *mgr, struct sg_table *sgt)
{ … }

static int op_write_complete(struct fpga_manager *mgr, struct fpga_image_info *info)
{ … }

/*
 * Fake FPGA manager that implements all ops required to check the programming
 * sequence using a single contiguous buffer and a scatter gather table.
 */
static const struct fpga_manager_ops fake_mgr_ops = …;

static void fpga_mgr_test_get(struct kunit *test)
{ … }

static void fpga_mgr_test_lock(struct kunit *test)
{ … }

/* Check the programming sequence using an image in a buffer */
static void fpga_mgr_test_img_load_buf(struct kunit *test)
{ … }

/* Check the programming sequence using an image in a scatter gather table */
static void fpga_mgr_test_img_load_sgt(struct kunit *test)
{ … }

static int fpga_mgr_test_init(struct kunit *test)
{ … }

static void fpga_mgr_test_exit(struct kunit *test)
{ … }

static struct kunit_case fpga_mgr_test_cases[] = …;

static struct kunit_suite fpga_mgr_suite = …;

kunit_test_suite(…) …;

MODULE_LICENSE(…) …;