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// SPDX-License-Identifier: GPL-2.0
/* Marvell OcteonTx2 RVU Admin Function driver
*
* Copyright (C) 2018 Marvell International Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/pci.h>
#include <linux/sysfs.h>
#include "rvu.h"
#define DRV_NAME "octeontx2-af"
#define DRV_STRING "Marvell OcteonTX2 RVU Admin Function Driver"
#define DRV_VERSION "1.0"
/* Supported devices */
static const struct pci_device_id rvu_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_AF) },
{ 0, } /* end of table */
};
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_DESCRIPTION(DRV_STRING);
MODULE_LICENSE("GPL v2");
MODULE_VERSION(DRV_VERSION);
MODULE_DEVICE_TABLE(pci, rvu_id_table);
static int rvu_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct device *dev = &pdev->dev;
struct rvu *rvu;
int err;
rvu = devm_kzalloc(dev, sizeof(*rvu), GFP_KERNEL);
if (!rvu)
return -ENOMEM;
pci_set_drvdata(pdev, rvu);
rvu->pdev = pdev;
rvu->dev = &pdev->dev;
err = pci_enable_device(pdev);
if (err) {
dev_err(dev, "Failed to enable PCI device\n");
goto err_freemem;
}
err = pci_request_regions(pdev, DRV_NAME);
if (err) {
dev_err(dev, "PCI request regions failed 0x%x\n", err);
goto err_disable_device;
}
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(48));
if (err) {
dev_err(dev, "Unable to set DMA mask\n");
goto err_release_regions;
}
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(48));
if (err) {
dev_err(dev, "Unable to set consistent DMA mask\n");
goto err_release_regions;
}
/* Map Admin function CSRs */
rvu->afreg_base = pcim_iomap(pdev, PCI_AF_REG_BAR_NUM, 0);
rvu->pfreg_base = pcim_iomap(pdev, PCI_PF_REG_BAR_NUM, 0);
if (!rvu->afreg_base || !rvu->pfreg_base) {
dev_err(dev, "Unable to map admin function CSRs, aborting\n");
err = -ENOMEM;
goto err_release_regions;
}
return 0;
err_release_regions:
pci_release_regions(pdev);
err_disable_device:
pci_disable_device(pdev);
err_freemem:
pci_set_drvdata(pdev, NULL);
devm_kfree(dev, rvu);
return err;
}
static void rvu_remove(struct pci_dev *pdev)
{
struct rvu *rvu = pci_get_drvdata(pdev);
pci_release_regions(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
devm_kfree(&pdev->dev, rvu);
}
static struct pci_driver rvu_driver = {
.name = DRV_NAME,
.id_table = rvu_id_table,
.probe = rvu_probe,
.remove = rvu_remove,
};
static int __init rvu_init_module(void)
{
pr_info("%s: %s\n", DRV_NAME, DRV_STRING);
return pci_register_driver(&rvu_driver);
}
static void __exit rvu_cleanup_module(void)
{
pci_unregister_driver(&rvu_driver);
}
module_init(rvu_init_module);
module_exit(rvu_cleanup_module);
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