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/of_device.h>
20 #include <linux/platform_device.h>
21 #include <linux/libata.h>
22 #include <linux/ahci_platform.h>
23 #include <linux/acpi.h>
24 #include <linux/pci_ids.h>
25 #include "ahci.h"
26
27 #define DRV_NAME "ahci"
28
29 static const struct ata_port_info ahci_port_info = {
30 .flags = AHCI_FLAG_COMMON,
31 .pio_mask = ATA_PIO4,
32 .udma_mask = ATA_UDMA6,
33 .port_ops = &ahci_platform_ops,
34 };
35
36 static struct scsi_host_template ahci_platform_sht = {
37 AHCI_SHT(DRV_NAME),
38 };
39
ahci_probe(struct platform_device * pdev)40 static int ahci_probe(struct platform_device *pdev)
41 {
42 struct device *dev = &pdev->dev;
43 struct ahci_host_priv *hpriv;
44 int rc;
45
46 hpriv = ahci_platform_get_resources(pdev,
47 AHCI_PLATFORM_GET_RESETS);
48 if (IS_ERR(hpriv))
49 return PTR_ERR(hpriv);
50
51 rc = ahci_platform_enable_resources(hpriv);
52 if (rc)
53 return rc;
54
55 of_property_read_u32(dev->of_node,
56 "ports-implemented", &hpriv->force_port_map);
57
58 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
59 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
60
61 rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info,
62 &ahci_platform_sht);
63 if (rc)
64 goto disable_resources;
65
66 return 0;
67 disable_resources:
68 ahci_platform_disable_resources(hpriv);
69 return rc;
70 }
71
72 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
73 ahci_platform_resume);
74
75 static const struct of_device_id ahci_of_match[] = {
76 { .compatible = "generic-ahci", },
77 /* Keep the following compatibles for device tree compatibility */
78 { .compatible = "snps,spear-ahci", },
79 { .compatible = "ibm,476gtr-ahci", },
80 { .compatible = "snps,dwc-ahci", },
81 { .compatible = "hisilicon,hisi-ahci", },
82 { .compatible = "cavium,octeon-7130-ahci", },
83 {},
84 };
85 MODULE_DEVICE_TABLE(of, ahci_of_match);
86
87 static const struct acpi_device_id ahci_acpi_match[] = {
88 { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
89 {},
90 };
91 MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
92
93 static struct platform_driver ahci_driver = {
94 .probe = ahci_probe,
95 .remove = ata_platform_remove_one,
96 .shutdown = ahci_platform_shutdown,
97 .driver = {
98 .name = DRV_NAME,
99 .of_match_table = ahci_of_match,
100 .acpi_match_table = ahci_acpi_match,
101 .pm = &ahci_pm_ops,
102 },
103 };
104 module_platform_driver(ahci_driver);
105
106 MODULE_DESCRIPTION("AHCI SATA platform driver");
107 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
108 MODULE_LICENSE("GPL");
109 MODULE_ALIAS("platform:ahci");
110
