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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/module.h>
13#include <linux/pm.h>
14#include <linux/device.h>
15#include <linux/of_device.h>
16#include <linux/platform_device.h>
17#include <linux/libata.h>
18#include <linux/ahci_platform.h>
19#include <linux/acpi.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 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 of_property_read_u32(dev->of_node,
60 "ports-implemented", &hpriv->force_port_map);
61
62 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
63 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
64
65 port = acpi_device_get_match_data(dev);
66 if (!port)
67 port = &ahci_port_info;
68
69 rc = ahci_platform_init_host(pdev, hpriv, port,
70 &ahci_platform_sht);
71 if (rc)
72 goto disable_resources;
73
74 return 0;
75disable_resources:
76 ahci_platform_disable_resources(hpriv);
77 return rc;
78}
79
80static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
81 ahci_platform_resume);
82
83static const struct of_device_id ahci_of_match[] = {
84 { .compatible = "generic-ahci", },
85 /* Keep the following compatibles for device tree compatibility */
86 { .compatible = "snps,spear-ahci", },
87 { .compatible = "ibm,476gtr-ahci", },
88 { .compatible = "snps,dwc-ahci", },
89 { .compatible = "hisilicon,hisi-ahci", },
90 { .compatible = "cavium,octeon-7130-ahci", },
91 {},
92};
93MODULE_DEVICE_TABLE(of, ahci_of_match);
94
95static const struct acpi_device_id ahci_acpi_match[] = {
96 { "APMC0D33", (unsigned long)&ahci_port_info_nolpm },
97 { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
98 {},
99};
100MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
101
102static struct platform_driver ahci_driver = {
103 .probe = ahci_probe,
104 .remove = ata_platform_remove_one,
105 .shutdown = ahci_platform_shutdown,
106 .driver = {
107 .name = DRV_NAME,
108 .of_match_table = ahci_of_match,
109 .acpi_match_table = ahci_acpi_match,
110 .pm = &ahci_pm_ops,
111 },
112};
113module_platform_driver(ahci_driver);
114
115MODULE_DESCRIPTION("AHCI SATA platform driver");
116MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
117MODULE_LICENSE("GPL");
118MODULE_ALIAS("platform:ahci");
1/*
2 * AHCI SATA platform driver
3 *
4 * Copyright 2004-2005 Red Hat, Inc.
5 * Jeff Garzik <jgarzik@pobox.com>
6 * Copyright 2010 MontaVista Software, LLC.
7 * Anton Vorontsov <avorontsov@ru.mvista.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2, or (at your option)
12 * any later version.
13 */
14
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/pm.h>
18#include <linux/device.h>
19#include <linux/platform_device.h>
20#include <linux/libata.h>
21#include <linux/ahci_platform.h>
22#include "ahci.h"
23
24static const struct ata_port_info ahci_port_info = {
25 .flags = AHCI_FLAG_COMMON,
26 .pio_mask = ATA_PIO4,
27 .udma_mask = ATA_UDMA6,
28 .port_ops = &ahci_platform_ops,
29};
30
31static int ahci_probe(struct platform_device *pdev)
32{
33 struct device *dev = &pdev->dev;
34 struct ahci_platform_data *pdata = dev_get_platdata(dev);
35 struct ahci_host_priv *hpriv;
36 int rc;
37
38 hpriv = ahci_platform_get_resources(pdev);
39 if (IS_ERR(hpriv))
40 return PTR_ERR(hpriv);
41
42 rc = ahci_platform_enable_resources(hpriv);
43 if (rc)
44 return rc;
45
46 /*
47 * Some platforms might need to prepare for mmio region access,
48 * which could be done in the following init call. So, the mmio
49 * region shouldn't be accessed before init (if provided) has
50 * returned successfully.
51 */
52 if (pdata && pdata->init) {
53 rc = pdata->init(dev, hpriv->mmio);
54 if (rc)
55 goto disable_resources;
56 }
57
58 rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info, 0, 0);
59 if (rc)
60 goto pdata_exit;
61
62 return 0;
63pdata_exit:
64 if (pdata && pdata->exit)
65 pdata->exit(dev);
66disable_resources:
67 ahci_platform_disable_resources(hpriv);
68 return rc;
69}
70
71static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
72 ahci_platform_resume);
73
74static const struct of_device_id ahci_of_match[] = {
75 { .compatible = "snps,spear-ahci", },
76 { .compatible = "snps,exynos5440-ahci", },
77 { .compatible = "ibm,476gtr-ahci", },
78 { .compatible = "snps,dwc-ahci", },
79 {},
80};
81MODULE_DEVICE_TABLE(of, ahci_of_match);
82
83static struct platform_driver ahci_driver = {
84 .probe = ahci_probe,
85 .remove = ata_platform_remove_one,
86 .driver = {
87 .name = "ahci",
88 .owner = THIS_MODULE,
89 .of_match_table = ahci_of_match,
90 .pm = &ahci_pm_ops,
91 },
92};
93module_platform_driver(ahci_driver);
94
95MODULE_DESCRIPTION("AHCI SATA platform driver");
96MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
97MODULE_LICENSE("GPL");
98MODULE_ALIAS("platform:ahci");