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118 lines
3.0 KiB
118 lines
3.0 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* AHCI SATA platform driver |
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* |
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* Copyright 2004-2005 Red Hat, Inc. |
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* Jeff Garzik <[email protected]> |
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* Copyright 2010 MontaVista Software, LLC. |
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* Anton Vorontsov <[email protected]> |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/pm.h> |
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#include <linux/device.h> |
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#include <linux/of_device.h> |
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#include <linux/platform_device.h> |
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#include <linux/libata.h> |
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#include <linux/ahci_platform.h> |
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#include <linux/acpi.h> |
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#include <linux/pci_ids.h> |
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#include "ahci.h" |
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#define DRV_NAME "ahci" |
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static const struct ata_port_info ahci_port_info = { |
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.flags = AHCI_FLAG_COMMON, |
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.pio_mask = ATA_PIO4, |
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.udma_mask = ATA_UDMA6, |
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.port_ops = &ahci_platform_ops, |
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}; |
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static const struct ata_port_info ahci_port_info_nolpm = { |
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.flags = AHCI_FLAG_COMMON | ATA_FLAG_NO_LPM, |
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.pio_mask = ATA_PIO4, |
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.udma_mask = ATA_UDMA6, |
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.port_ops = &ahci_platform_ops, |
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}; |
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static struct scsi_host_template ahci_platform_sht = { |
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AHCI_SHT(DRV_NAME), |
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}; |
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static int ahci_probe(struct platform_device *pdev) |
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{ |
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struct device *dev = &pdev->dev; |
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struct ahci_host_priv *hpriv; |
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const struct ata_port_info *port; |
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int rc; |
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hpriv = ahci_platform_get_resources(pdev, |
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AHCI_PLATFORM_GET_RESETS); |
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if (IS_ERR(hpriv)) |
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return PTR_ERR(hpriv); |
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rc = ahci_platform_enable_resources(hpriv); |
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if (rc) |
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return rc; |
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of_property_read_u32(dev->of_node, |
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"ports-implemented", &hpriv->force_port_map); |
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if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci")) |
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hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ; |
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port = acpi_device_get_match_data(dev); |
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if (!port) |
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port = &ahci_port_info; |
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rc = ahci_platform_init_host(pdev, hpriv, port, |
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&ahci_platform_sht); |
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if (rc) |
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goto disable_resources; |
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return 0; |
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disable_resources: |
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ahci_platform_disable_resources(hpriv); |
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return rc; |
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} |
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static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, |
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ahci_platform_resume); |
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static const struct of_device_id ahci_of_match[] = { |
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{ .compatible = "generic-ahci", }, |
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/* Keep the following compatibles for device tree compatibility */ |
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{ .compatible = "snps,spear-ahci", }, |
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{ .compatible = "ibm,476gtr-ahci", }, |
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{ .compatible = "snps,dwc-ahci", }, |
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{ .compatible = "hisilicon,hisi-ahci", }, |
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{ .compatible = "cavium,octeon-7130-ahci", }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, ahci_of_match); |
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static const struct acpi_device_id ahci_acpi_match[] = { |
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{ "APMC0D33", (unsigned long)&ahci_port_info_nolpm }, |
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{ ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(acpi, ahci_acpi_match); |
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static struct platform_driver ahci_driver = { |
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.probe = ahci_probe, |
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.remove = ata_platform_remove_one, |
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.shutdown = ahci_platform_shutdown, |
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.driver = { |
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.name = DRV_NAME, |
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.of_match_table = ahci_of_match, |
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.acpi_match_table = ahci_acpi_match, |
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.pm = &ahci_pm_ops, |
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}, |
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}; |
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module_platform_driver(ahci_driver); |
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MODULE_DESCRIPTION("AHCI SATA platform driver"); |
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MODULE_AUTHOR("Anton Vorontsov <[email protected]>"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:ahci");
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