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 | |
25 | static 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 | |
32 | static 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 | |
39 | static const struct scsi_host_template ahci_platform_sht = { |
40 | AHCI_SHT(DRV_NAME), |
41 | }; |
42 | |
43 | static 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(ptr: hpriv)) |
53 | return PTR_ERR(ptr: hpriv); |
54 | |
55 | rc = ahci_platform_enable_resources(hpriv); |
56 | if (rc) |
57 | return rc; |
58 | |
59 | if (device_is_compatible(dev, compat: "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, pi_template: port, |
67 | sht: &ahci_platform_sht); |
68 | if (rc) |
69 | goto disable_resources; |
70 | |
71 | return 0; |
72 | disable_resources: |
73 | ahci_platform_disable_resources(hpriv); |
74 | return rc; |
75 | } |
76 | |
77 | static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, |
78 | ahci_platform_resume); |
79 | |
80 | static 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 | }; |
88 | MODULE_DEVICE_TABLE(of, ahci_of_match); |
89 | |
90 | static 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 | }; |
95 | MODULE_DEVICE_TABLE(acpi, ahci_acpi_match); |
96 | |
97 | static 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 | }; |
108 | module_platform_driver(ahci_driver); |
109 | |
110 | MODULE_DESCRIPTION("AHCI SATA platform driver" ); |
111 | MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>" ); |
112 | MODULE_LICENSE("GPL" ); |
113 | MODULE_ALIAS("platform:ahci" ); |
114 | |