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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * AHCI SATA platform driver4 *5 * Copyright 2004-2005 Red Hat, Inc.6 * Jeff Garzik <jgarzik@pobox.com>7 * Copyright 2010 MontaVista Software, LLC.8 * Anton Vorontsov <avorontsov@ru.mvista.com>9 */10 11#include <linux/kernel.h>12#include <linux/mod_devicetable.h>13#include <linux/module.h>14#include <linux/pm.h>15#include <linux/device.h>16#include <linux/platform_device.h>17#include <linux/property.h>18#include <linux/libata.h>19#include <linux/ahci_platform.h>20#include <linux/pci_ids.h>21#include "ahci.h"22 23#define DRV_NAME "ahci"24 25static const struct ata_port_info ahci_port_info = {26 .flags = AHCI_FLAG_COMMON,27 .pio_mask = ATA_PIO4,28 .udma_mask = ATA_UDMA6,29 .port_ops = &ahci_platform_ops,30};31 32static const struct ata_port_info ahci_port_info_nolpm = {33 .flags = AHCI_FLAG_COMMON | ATA_FLAG_NO_LPM,34 .pio_mask = ATA_PIO4,35 .udma_mask = ATA_UDMA6,36 .port_ops = &ahci_platform_ops,37};38 39static const struct scsi_host_template ahci_platform_sht = {40 AHCI_SHT(DRV_NAME),41};42 43static int ahci_probe(struct platform_device *pdev)44{45 struct device *dev = &pdev->dev;46 struct ahci_host_priv *hpriv;47 const struct ata_port_info *port;48 int rc;49 50 hpriv = ahci_platform_get_resources(pdev,51 AHCI_PLATFORM_GET_RESETS);52 if (IS_ERR(hpriv))53 return PTR_ERR(hpriv);54 55 rc = ahci_platform_enable_resources(hpriv);56 if (rc)57 return rc;58 59 if (device_is_compatible(dev, "hisilicon,hisi-ahci"))60 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;61 62 port = device_get_match_data(dev);63 if (!port)64 port = &ahci_port_info;65 66 rc = ahci_platform_init_host(pdev, hpriv, port,67 &ahci_platform_sht);68 if (rc)69 goto disable_resources;70 71 return 0;72disable_resources:73 ahci_platform_disable_resources(hpriv);74 return rc;75}76 77static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,78 ahci_platform_resume);79 80static const struct of_device_id ahci_of_match[] = {81 { .compatible = "generic-ahci", },82 /* Keep the following compatibles for device tree compatibility */83 { .compatible = "ibm,476gtr-ahci", },84 { .compatible = "hisilicon,hisi-ahci", },85 { .compatible = "cavium,octeon-7130-ahci", },86 { /* sentinel */ }87};88MODULE_DEVICE_TABLE(of, ahci_of_match);89 90static const struct acpi_device_id ahci_acpi_match[] = {91 { "APMC0D33", (unsigned long)&ahci_port_info_nolpm },92 { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },93 {},94};95MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);96 97static struct platform_driver ahci_driver = {98 .probe = ahci_probe,99 .remove_new = ata_platform_remove_one,100 .shutdown = ahci_platform_shutdown,101 .driver = {102 .name = DRV_NAME,103 .of_match_table = ahci_of_match,104 .acpi_match_table = ahci_acpi_match,105 .pm = &ahci_pm_ops,106 },107};108module_platform_driver(ahci_driver);109 110MODULE_DESCRIPTION("AHCI SATA platform driver");111MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");112MODULE_LICENSE("GPL");113MODULE_ALIAS("platform:ahci");114