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 struct scsi_host_template ahci_platform_sht = { 37 AHCI_SHT(DRV_NAME), 38 }; 39 40 static int ahci_probe(struct platform_device *pdev) 41 { 42 struct device *dev = &pdev->dev; 43 struct ahci_host_priv *hpriv; 44 int rc; 45 46 hpriv = ahci_platform_get_resources(pdev, 47 AHCI_PLATFORM_GET_RESETS); 48 if (IS_ERR(hpriv)) 49 return PTR_ERR(hpriv); 50 51 rc = ahci_platform_enable_resources(hpriv); 52 if (rc) 53 return rc; 54 55 of_property_read_u32(dev->of_node, 56 "ports-implemented", &hpriv->force_port_map); 57 58 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci")) 59 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ; 60 61 rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info, 62 &ahci_platform_sht); 63 if (rc) 64 goto disable_resources; 65 66 return 0; 67 disable_resources: 68 ahci_platform_disable_resources(hpriv); 69 return rc; 70 } 71 72 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, 73 ahci_platform_resume); 74 75 static const struct of_device_id ahci_of_match[] = { 76 { .compatible = "generic-ahci", }, 77 /* Keep the following compatibles for device tree compatibility */ 78 { .compatible = "snps,spear-ahci", }, 79 { .compatible = "ibm,476gtr-ahci", }, 80 { .compatible = "snps,dwc-ahci", }, 81 { .compatible = "hisilicon,hisi-ahci", }, 82 { .compatible = "cavium,octeon-7130-ahci", }, 83 {}, 84 }; 85 MODULE_DEVICE_TABLE(of, ahci_of_match); 86 87 static const struct acpi_device_id ahci_acpi_match[] = { 88 { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) }, 89 {}, 90 }; 91 MODULE_DEVICE_TABLE(acpi, ahci_acpi_match); 92 93 static struct platform_driver ahci_driver = { 94 .probe = ahci_probe, 95 .remove = ata_platform_remove_one, 96 .shutdown = ahci_platform_shutdown, 97 .driver = { 98 .name = DRV_NAME, 99 .of_match_table = ahci_of_match, 100 .acpi_match_table = ahci_acpi_match, 101 .pm = &ahci_pm_ops, 102 }, 103 }; 104 module_platform_driver(ahci_driver); 105 106 MODULE_DESCRIPTION("AHCI SATA platform driver"); 107 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>"); 108 MODULE_LICENSE("GPL"); 109 MODULE_ALIAS("platform:ahci"); 110