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/module.h> 13 #include <linux/pm.h> 14 #include <linux/device.h> 15 #include <linux/of_device.h> 16 #include <linux/platform_device.h> 17 #include <linux/libata.h> 18 #include <linux/ahci_platform.h> 19 #include <linux/acpi.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 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(hpriv)) 53 return PTR_ERR(hpriv); 54 55 rc = ahci_platform_enable_resources(hpriv); 56 if (rc) 57 return rc; 58 59 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci")) 60 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ; 61 62 port = acpi_device_get_match_data(dev); 63 if (!port) 64 port = &ahci_port_info; 65 66 rc = ahci_platform_init_host(pdev, hpriv, port, 67 &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 = 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