/* * AHCI glue platform driver for Marvell EBU SOCs * * Copyright (C) 2014 Marvell * * Thomas Petazzoni <[email protected]> * Marcin Wojtas <[email protected]> * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include <linux/ahci_platform.h> #include <linux/kernel.h> #include <linux/mbus.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include "ahci.h" #define DRV_NAME … #define AHCI_VENDOR_SPECIFIC_0_ADDR … #define AHCI_VENDOR_SPECIFIC_0_DATA … #define AHCI_WINDOW_CTRL(win) … #define AHCI_WINDOW_BASE(win) … #define AHCI_WINDOW_SIZE(win) … struct ahci_mvebu_plat_data { … }; static void ahci_mvebu_mbus_config(struct ahci_host_priv *hpriv, const struct mbus_dram_target_info *dram) { … } static void ahci_mvebu_regret_option(struct ahci_host_priv *hpriv) { … } static int ahci_mvebu_armada_380_config(struct ahci_host_priv *hpriv) { … } static int ahci_mvebu_armada_3700_config(struct ahci_host_priv *hpriv) { … } /** * ahci_mvebu_stop_engine * * @ap: Target ata port * * Errata Ref#226 - SATA Disk HOT swap issue when connected through * Port Multiplier in FIS-based Switching mode. * * To avoid the issue, according to design, the bits[11:8, 0] of * register PxFBS are cleared when Port Command and Status (0x18) bit[0] * changes its value from 1 to 0, i.e. falling edge of Port * Command and Status bit[0] sends PULSE that resets PxFBS * bits[11:8; 0]. * * This function is used to override function of "ahci_stop_engine" * from libahci.c by adding the mvebu work around(WA) to save PxFBS * value before the PxCMD ST write of 0, then restore PxFBS value. * * Return: 0 on success; Error code otherwise. */ static int ahci_mvebu_stop_engine(struct ata_port *ap) { … } #ifdef CONFIG_PM_SLEEP static int ahci_mvebu_suspend(struct platform_device *pdev, pm_message_t state) { … } static int ahci_mvebu_resume(struct platform_device *pdev) { … } #else #define ahci_mvebu_suspend … #define ahci_mvebu_resume … #endif static const struct ata_port_info ahci_mvebu_port_info = …; static const struct scsi_host_template ahci_platform_sht = …; static int ahci_mvebu_probe(struct platform_device *pdev) { … } static const struct ahci_mvebu_plat_data ahci_mvebu_armada_380_plat_data = …; static const struct ahci_mvebu_plat_data ahci_mvebu_armada_3700_plat_data = …; static const struct of_device_id ahci_mvebu_of_match[] = …; MODULE_DEVICE_TABLE(of, ahci_mvebu_of_match); static struct platform_driver ahci_mvebu_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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