// 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");