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// SPDX-License-Identifier: GPL-2.0-only
// Copyright(c) 2026 Intel Corporation. All rights reserved.
#include <linux/platform_device.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/sizes.h>
#include <cxl/mailbox.h>
#include <cxlmem.h>
struct mock_cxl_accel {
struct cxl_dev_state cxlds;
struct cxl_memdev *cxlmd;
};
static int cxl_mock_accel_probe(struct platform_device *pdev)
{
struct mock_cxl_accel *cxl_accel;
struct device *dev = &pdev->dev;
struct cxl_dev_state *cxlds;
struct cxl_memdev *cxlmd;
struct range mock_range;
int rc;
cxl_accel = devm_cxl_dev_state_create(&pdev->dev, CXL_DEVTYPE_DEVMEM,
pdev->id + 1, 0,
struct mock_cxl_accel, cxlds,
false);
if (!cxl_accel)
return -ENOMEM;
cxlds = &cxl_accel->cxlds;
cxlds->media_ready = true;
rc = cxl_set_capacity(cxlds, SZ_512M);
if (rc)
return rc;
cxlmd = devm_cxl_probe_mem(cxlds, &mock_range);
if (IS_ERR(cxlmd))
return PTR_ERR(cxlmd);
cxl_accel->cxlmd = cxlmd;
dev_dbg(dev, "Probed mock accelerator with range %pra\n", &mock_range);
return 0;
}
static const struct platform_device_id cxl_mock_accel_ids[] = {
{ .name = "cxl_type2_accel" },
{ }
};
MODULE_DEVICE_TABLE(platform, cxl_mock_accel_ids);
static struct platform_driver cxl_mock_accel_driver = {
.probe = cxl_mock_accel_probe,
.id_table = cxl_mock_accel_ids,
.driver = {
.name = KBUILD_MODNAME,
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
};
module_platform_driver(cxl_mock_accel_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("cxl_test: accelerator device mock module");
MODULE_IMPORT_NS("CXL");
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