[linux-2.6-block.git] / drivers / ata / ahci_platform.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * AHCI SATA platform driver
 *
 * Copyright 2004-2005  Red Hat, Inc.
 *   Jeff Garzik <jgarzik@pobox.com>
 * Copyright 2010  MontaVista Software, LLC.
 *   Anton Vorontsov <avorontsov@ru.mvista.com>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/device.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/libata.h>
#include <linux/ahci_platform.h>
#include <linux/acpi.h>
#include <linux/pci_ids.h>
#include "ahci.h"

#define DRV_NAME "ahci"

static const struct ata_port_info ahci_port_info = {
	.flags		= AHCI_FLAG_COMMON,
	.pio_mask	= ATA_PIO4,
	.udma_mask	= ATA_UDMA6,
	.port_ops	= &ahci_platform_ops,
};

static const struct ata_port_info ahci_port_info_nolpm = {
	.flags		= AHCI_FLAG_COMMON | ATA_FLAG_NO_LPM,
	.pio_mask	= ATA_PIO4,
	.udma_mask	= ATA_UDMA6,
	.port_ops	= &ahci_platform_ops,
};

static struct scsi_host_template ahci_platform_sht = {
	AHCI_SHT(DRV_NAME),
};

static int ahci_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct ahci_host_priv *hpriv;
	const struct ata_port_info *port;
	int rc;

	hpriv = ahci_platform_get_resources(pdev,
					    AHCI_PLATFORM_GET_RESETS);
	if (IS_ERR(hpriv))
		return PTR_ERR(hpriv);

	rc = ahci_platform_enable_resources(hpriv);
	if (rc)
		return rc;

	of_property_read_u32(dev->of_node,
			     "ports-implemented", &hpriv->force_port_map);

	if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
		hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;

	port = acpi_device_get_match_data(dev);
	if (!port)
		port = &ahci_port_info;

	rc = ahci_platform_init_host(pdev, hpriv, port,
				     &ahci_platform_sht);
	if (rc)
		goto disable_resources;

	return 0;
disable_resources:
	ahci_platform_disable_resources(hpriv);
	return rc;
}

static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
			 ahci_platform_resume);

static const struct of_device_id ahci_of_match[] = {
	{ .compatible = "generic-ahci", },
	/* Keep the following compatibles for device tree compatibility */
	{ .compatible = "snps,spear-ahci", },
	{ .compatible = "ibm,476gtr-ahci", },
	{ .compatible = "snps,dwc-ahci", },
	{ .compatible = "hisilicon,hisi-ahci", },
	{ .compatible = "cavium,octeon-7130-ahci", },
	{},
};
MODULE_DEVICE_TABLE(of, ahci_of_match);

static const struct acpi_device_id ahci_acpi_match[] = {
	{ "APMC0D33", (unsigned long)&ahci_port_info_nolpm },
	{ ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
	{},
};
MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);

static struct platform_driver ahci_driver = {
	.probe = ahci_probe,
	.remove = ata_platform_remove_one,
	.shutdown = ahci_platform_shutdown,
	.driver = {
		.name = DRV_NAME,
		.of_match_table = ahci_of_match,
		.acpi_match_table = ahci_acpi_match,
		.pm = &ahci_pm_ops,
	},
};
module_platform_driver(ahci_driver);

MODULE_DESCRIPTION("AHCI SATA platform driver");
MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:ahci");
Commit	Line	Data
8d7c56d0	1	// SPDX-License-Identifier: GPL-2.0-or-later
1c2a49f6 AV	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>
1c2a49f6 AV	9	*/
	10
	11	#include <linux/kernel.h>
	12	#include <linux/module.h>
18c25ff4	13	#include <linux/pm.h>
1c2a49f6	14	#include <linux/device.h>
a1a205df	15	#include <linux/of_device.h>
1c2a49f6 AV	16	#include <linux/platform_device.h>
	17	#include <linux/libata.h>
	18	#include <linux/ahci_platform.h>
2051e924 SS	19	#include <linux/acpi.h>
2051e924 SS	20	#include <linux/pci_ids.h>
1c2a49f6 AV	21	#include "ahci.h"
1c2a49f6 AV	22
018d5ef2 AM	23	#define DRV_NAME "ahci"
018d5ef2 AM	24
c093e1d3 HG	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,
904c04fe RZ	30	};
904c04fe RZ	31
20bdc376 ST	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
018d5ef2 AM	39	static struct scsi_host_template ahci_platform_sht = {
	40	AHCI_SHT(DRV_NAME),
	41	};
	42
23b07d4c HG	43	static int ahci_probe(struct platform_device *pdev)
	44	{
	45	struct device *dev = &pdev->dev;
23b07d4c	46	struct ahci_host_priv *hpriv;
20bdc376	47	const struct ata_port_info *port;
23b07d4c HG	48	int rc;
23b07d4c HG	49
2d17f460 KH	50	hpriv = ahci_platform_get_resources(pdev,
2d17f460 KH	51	AHCI_PLATFORM_GET_RESETS);
23b07d4c HG	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
17dcc37e SK	59	of_property_read_u32(dev->of_node,
	60	"ports-implemented", &hpriv->force_port_map);
	61
a1a205df	62	if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
725c7b57	63	hpriv->flags \|= AHCI_HFLAG_NO_FBS \| AHCI_HFLAG_NO_NCQ;
a1a205df	64
20bdc376 ST	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,
018d5ef2	70	&ahci_platform_sht);
1c2a49f6	71	if (rc)
515d9b2c	72	goto disable_resources;
1c2a49f6 AV	73
1c2a49f6 AV	74	return 0;
96a01ba5 HG	75	disable_resources:
96a01ba5 HG	76	ahci_platform_disable_resources(hpriv);
1c2a49f6 AV	77	return rc;
	78	}
	79
648cb6fd HG	80	static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
648cb6fd HG	81	ahci_platform_resume);
18c25ff4	82
02aac316	83	static const struct of_device_id ahci_of_match[] = {
30f3c73c AT	84	{ .compatible = "generic-ahci", },
30f3c73c AT	85	/* Keep the following compatibles for device tree compatibility */
5f098a3e	86	{ .compatible = "snps,spear-ahci", },
2435dcb9	87	{ .compatible = "ibm,476gtr-ahci", },
c4311471	88	{ .compatible = "snps,dwc-ahci", },
a1a205df	89	{ .compatible = "hisilicon,hisi-ahci", },
a2127e40	90	{ .compatible = "cavium,octeon-7130-ahci", },
02aac316 RH	91	{},
	92	};
	93	MODULE_DEVICE_TABLE(of, ahci_of_match);
	94
2051e924	95	static const struct acpi_device_id ahci_acpi_match[] = {
20bdc376	96	{ "APMC0D33", (unsigned long)&ahci_port_info_nolpm },
2051e924 SS	97	{ ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
	98	{},
	99	};
	100	MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
	101
1c2a49f6	102	static struct platform_driver ahci_driver = {
941c77fd	103	.probe = ahci_probe,
83291d65	104	.remove = ata_platform_remove_one,
8eede5bc	105	.shutdown = ahci_platform_shutdown,
1c2a49f6	106	.driver = {
018d5ef2	107	.name = DRV_NAME,
02aac316	108	.of_match_table = ahci_of_match,
2051e924	109	.acpi_match_table = ahci_acpi_match,
17ab594f	110	.pm = &ahci_pm_ops,
1c2a49f6 AV	111	},
1c2a49f6 AV	112	};
9a99e476	113	module_platform_driver(ahci_driver);
1c2a49f6 AV	114
	115	MODULE_DESCRIPTION("AHCI SATA platform driver");
	116	MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
	117	MODULE_LICENSE("GPL");
	118	MODULE_ALIAS("platform:ahci");