1 /* 2 * AHCI SATA platform driver 3 * 4 * Copyright 2004-2005 Red Hat, Inc. 5 * Jeff Garzik <jgarzik@pobox.com> 6 * Copyright 2010 MontaVista Software, LLC. 7 * Anton Vorontsov <avorontsov@ru.mvista.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2, or (at your option) 12 * any later version. 13 */ 14 15 #include <linux/kernel.h> 16 #include <linux/module.h> 17 #include <linux/pm.h> 18 #include <linux/device.h> 19 #include <linux/of_device.h> 20 #include <linux/platform_device.h> 21 #include <linux/libata.h> 22 #include <linux/ahci_platform.h> 23 #include <linux/acpi.h> 24 #include <linux/pci_ids.h> 25 #include "ahci.h" 26 27 #define DRV_NAME "ahci" 28 29 static const struct ata_port_info ahci_port_info = { 30 .flags = AHCI_FLAG_COMMON, 31 .pio_mask = ATA_PIO4, 32 .udma_mask = ATA_UDMA6, 33 .port_ops = &ahci_platform_ops, 34 }; 35 36 static const struct ata_port_info ahci_port_info_nolpm = { 37 .flags = AHCI_FLAG_COMMON | ATA_FLAG_NO_LPM, 38 .pio_mask = ATA_PIO4, 39 .udma_mask = ATA_UDMA6, 40 .port_ops = &ahci_platform_ops, 41 }; 42 43 static struct scsi_host_template ahci_platform_sht = { 44 AHCI_SHT(DRV_NAME), 45 }; 46 47 static int ahci_probe(struct platform_device *pdev) 48 { 49 struct device *dev = &pdev->dev; 50 struct ahci_host_priv *hpriv; 51 const struct ata_port_info *port; 52 int rc; 53 54 hpriv = ahci_platform_get_resources(pdev, 55 AHCI_PLATFORM_GET_RESETS); 56 if (IS_ERR(hpriv)) 57 return PTR_ERR(hpriv); 58 59 rc = ahci_platform_enable_resources(hpriv); 60 if (rc) 61 return rc; 62 63 of_property_read_u32(dev->of_node, 64 "ports-implemented", &hpriv->force_port_map); 65 66 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci")) 67 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ; 68 69 port = acpi_device_get_match_data(dev); 70 if (!port) 71 port = &ahci_port_info; 72 73 rc = ahci_platform_init_host(pdev, hpriv, port, 74 &ahci_platform_sht); 75 if (rc) 76 goto disable_resources; 77 78 return 0; 79 disable_resources: 80 ahci_platform_disable_resources(hpriv); 81 return rc; 82 } 83 84 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, 85 ahci_platform_resume); 86 87 static const struct of_device_id ahci_of_match[] = { 88 { .compatible = "generic-ahci", }, 89 /* Keep the following compatibles for device tree compatibility */ 90 { .compatible = "snps,spear-ahci", }, 91 { .compatible = "ibm,476gtr-ahci", }, 92 { .compatible = "snps,dwc-ahci", }, 93 { .compatible = "hisilicon,hisi-ahci", }, 94 { .compatible = "cavium,octeon-7130-ahci", }, 95 {}, 96 }; 97 MODULE_DEVICE_TABLE(of, ahci_of_match); 98 99 static const struct acpi_device_id ahci_acpi_match[] = { 100 { "APMC0D33", (unsigned long)&ahci_port_info_nolpm }, 101 { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) }, 102 {}, 103 }; 104 MODULE_DEVICE_TABLE(acpi, ahci_acpi_match); 105 106 static struct platform_driver ahci_driver = { 107 .probe = ahci_probe, 108 .remove = ata_platform_remove_one, 109 .shutdown = ahci_platform_shutdown, 110 .driver = { 111 .name = DRV_NAME, 112 .of_match_table = ahci_of_match, 113 .acpi_match_table = ahci_acpi_match, 114 .pm = &ahci_pm_ops, 115 }, 116 }; 117 module_platform_driver(ahci_driver); 118 119 MODULE_DESCRIPTION("AHCI SATA platform driver"); 120 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>"); 121 MODULE_LICENSE("GPL"); 122 MODULE_ALIAS("platform:ahci"); 123