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 of_property_read_u32(dev->of_node, 60 "ports-implemented", &hpriv->force_port_map); 61 62 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci")) 63 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ; 64 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, 70 &ahci_platform_sht); 71 if (rc) 72 goto disable_resources; 73 74 return 0; 75 disable_resources: 76 ahci_platform_disable_resources(hpriv); 77 return rc; 78 } 79 80 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, 81 ahci_platform_resume); 82 83 static const struct of_device_id ahci_of_match[] = { 84 { .compatible = "generic-ahci", }, 85 /* Keep the following compatibles for device tree compatibility */ 86 { .compatible = "snps,spear-ahci", }, 87 { .compatible = "ibm,476gtr-ahci", }, 88 { .compatible = "snps,dwc-ahci", }, 89 { .compatible = "hisilicon,hisi-ahci", }, 90 { .compatible = "cavium,octeon-7130-ahci", }, 91 { /* sentinel */ } 92 }; 93 MODULE_DEVICE_TABLE(of, ahci_of_match); 94 95 static const struct acpi_device_id ahci_acpi_match[] = { 96 { "APMC0D33", (unsigned long)&ahci_port_info_nolpm }, 97 { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) }, 98 {}, 99 }; 100 MODULE_DEVICE_TABLE(acpi, ahci_acpi_match); 101 102 static struct platform_driver ahci_driver = { 103 .probe = ahci_probe, 104 .remove = ata_platform_remove_one, 105 .shutdown = ahci_platform_shutdown, 106 .driver = { 107 .name = DRV_NAME, 108 .of_match_table = ahci_of_match, 109 .acpi_match_table = ahci_acpi_match, 110 .pm = &ahci_pm_ops, 111 }, 112 }; 113 module_platform_driver(ahci_driver); 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"); 119