mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 12:25:08 +07:00
08d62f58aa
It is really useful not only for debugging to have an IRQ line and DMA pool labeled with driver and its instance ID. Do this for DesignWare DMA driver. All current users of this IP would be enhanced later on. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/*
|
|
* PCI driver for the Synopsys DesignWare DMA Controller
|
|
*
|
|
* Copyright (C) 2013 Intel Corporation
|
|
* Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
|
|
*
|
|
* 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/pci.h>
|
|
#include <linux/device.h>
|
|
|
|
#include "internal.h"
|
|
|
|
static int dw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
|
|
{
|
|
const struct dw_dma_platform_data *pdata = (void *)pid->driver_data;
|
|
struct dw_dma_chip *chip;
|
|
int ret;
|
|
|
|
ret = pcim_enable_device(pdev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev));
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "I/O memory remapping failed\n");
|
|
return ret;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
pci_try_set_mwi(pdev);
|
|
|
|
ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (ret)
|
|
return ret;
|
|
|
|
chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
|
|
if (!chip)
|
|
return -ENOMEM;
|
|
|
|
chip->dev = &pdev->dev;
|
|
chip->id = pdev->devfn;
|
|
chip->regs = pcim_iomap_table(pdev)[0];
|
|
chip->irq = pdev->irq;
|
|
chip->pdata = pdata;
|
|
|
|
ret = dw_dma_probe(chip);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pci_set_drvdata(pdev, chip);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dw_pci_remove(struct pci_dev *pdev)
|
|
{
|
|
struct dw_dma_chip *chip = pci_get_drvdata(pdev);
|
|
int ret;
|
|
|
|
ret = dw_dma_remove(chip);
|
|
if (ret)
|
|
dev_warn(&pdev->dev, "can't remove device properly: %d\n", ret);
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
|
|
static int dw_pci_suspend_late(struct device *dev)
|
|
{
|
|
struct pci_dev *pci = to_pci_dev(dev);
|
|
struct dw_dma_chip *chip = pci_get_drvdata(pci);
|
|
|
|
return dw_dma_disable(chip);
|
|
};
|
|
|
|
static int dw_pci_resume_early(struct device *dev)
|
|
{
|
|
struct pci_dev *pci = to_pci_dev(dev);
|
|
struct dw_dma_chip *chip = pci_get_drvdata(pci);
|
|
|
|
return dw_dma_enable(chip);
|
|
};
|
|
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
static const struct dev_pm_ops dw_pci_dev_pm_ops = {
|
|
SET_LATE_SYSTEM_SLEEP_PM_OPS(dw_pci_suspend_late, dw_pci_resume_early)
|
|
};
|
|
|
|
static const struct pci_device_id dw_pci_id_table[] = {
|
|
/* Medfield (GPDMA) */
|
|
{ PCI_VDEVICE(INTEL, 0x0827) },
|
|
|
|
/* BayTrail */
|
|
{ PCI_VDEVICE(INTEL, 0x0f06) },
|
|
{ PCI_VDEVICE(INTEL, 0x0f40) },
|
|
|
|
/* Braswell */
|
|
{ PCI_VDEVICE(INTEL, 0x2286) },
|
|
{ PCI_VDEVICE(INTEL, 0x22c0) },
|
|
|
|
/* Haswell */
|
|
{ PCI_VDEVICE(INTEL, 0x9c60) },
|
|
|
|
/* Broadwell */
|
|
{ PCI_VDEVICE(INTEL, 0x9ce0) },
|
|
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, dw_pci_id_table);
|
|
|
|
static struct pci_driver dw_pci_driver = {
|
|
.name = "dw_dmac_pci",
|
|
.id_table = dw_pci_id_table,
|
|
.probe = dw_pci_probe,
|
|
.remove = dw_pci_remove,
|
|
.driver = {
|
|
.pm = &dw_pci_dev_pm_ops,
|
|
},
|
|
};
|
|
|
|
module_pci_driver(dw_pci_driver);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("Synopsys DesignWare DMA Controller PCI driver");
|
|
MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
|