1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * AHCI SATA platform driver
4 *
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