2 * Universal Flash Storage Host controller PCI glue driver
4 * This code is based on drivers/scsi/ufs/ufshcd-pci.c
5 * Copyright (C) 2011-2013 Samsung India Software Operations
11 * This program is free software; you can redistribute it and/or
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13 * as published by the Free Software Foundation; either version 2
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37 #include <linux/pci.h>
38 #include <linux/pm_runtime.h>
40 static int ufs_intel_disable_lcc(struct ufs_hba *hba)
42 u32 attr = UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE);
45 ufshcd_dme_get(hba, attr, &lcc_enable);
47 ufshcd_dme_set(hba, attr, 0);
52 static int ufs_intel_link_startup_notify(struct ufs_hba *hba,
53 enum ufs_notify_change_status status)
59 err = ufs_intel_disable_lcc(hba);
70 static struct ufs_hba_variant_ops ufs_intel_cnl_hba_vops = {
72 .link_startup_notify = ufs_intel_link_startup_notify,
75 #ifdef CONFIG_PM_SLEEP
77 * ufshcd_pci_suspend - suspend power management function
78 * @pdev: pointer to PCI device handle
81 * Returns 0 if successful
82 * Returns non-zero otherwise
84 static int ufshcd_pci_suspend(struct device *dev)
86 return ufshcd_system_suspend(dev_get_drvdata(dev));
90 * ufshcd_pci_resume - resume power management function
91 * @pdev: pointer to PCI device handle
93 * Returns 0 if successful
94 * Returns non-zero otherwise
96 static int ufshcd_pci_resume(struct device *dev)
98 return ufshcd_system_resume(dev_get_drvdata(dev));
100 #endif /* !CONFIG_PM_SLEEP */
103 static int ufshcd_pci_runtime_suspend(struct device *dev)
105 return ufshcd_runtime_suspend(dev_get_drvdata(dev));
107 static int ufshcd_pci_runtime_resume(struct device *dev)
109 return ufshcd_runtime_resume(dev_get_drvdata(dev));
111 static int ufshcd_pci_runtime_idle(struct device *dev)
113 return ufshcd_runtime_idle(dev_get_drvdata(dev));
115 #endif /* !CONFIG_PM */
118 * ufshcd_pci_shutdown - main function to put the controller in reset state
119 * @pdev: pointer to PCI device handle
121 static void ufshcd_pci_shutdown(struct pci_dev *pdev)
123 ufshcd_shutdown((struct ufs_hba *)pci_get_drvdata(pdev));
127 * ufshcd_pci_remove - de-allocate PCI/SCSI host and host memory space
128 * data structure memory
129 * @pdev - pointer to PCI handle
131 static void ufshcd_pci_remove(struct pci_dev *pdev)
133 struct ufs_hba *hba = pci_get_drvdata(pdev);
135 pm_runtime_forbid(&pdev->dev);
136 pm_runtime_get_noresume(&pdev->dev);
138 ufshcd_dealloc_host(hba);
142 * ufshcd_pci_probe - probe routine of the driver
143 * @pdev: pointer to PCI device handle
146 * Returns 0 on success, non-zero value on failure
149 ufshcd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
152 void __iomem *mmio_base;
155 err = pcim_enable_device(pdev);
157 dev_err(&pdev->dev, "pcim_enable_device failed\n");
161 pci_set_master(pdev);
163 err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD);
165 dev_err(&pdev->dev, "request and iomap failed\n");
169 mmio_base = pcim_iomap_table(pdev)[0];
171 err = ufshcd_alloc_host(&pdev->dev, &hba);
173 dev_err(&pdev->dev, "Allocation failed\n");
177 hba->vops = (struct ufs_hba_variant_ops *)id->driver_data;
179 err = ufshcd_init(hba, mmio_base, pdev->irq);
181 dev_err(&pdev->dev, "Initialization failed\n");
182 ufshcd_dealloc_host(hba);
186 pci_set_drvdata(pdev, hba);
187 pm_runtime_put_noidle(&pdev->dev);
188 pm_runtime_allow(&pdev->dev);
193 static const struct dev_pm_ops ufshcd_pci_pm_ops = {
194 SET_SYSTEM_SLEEP_PM_OPS(ufshcd_pci_suspend,
196 SET_RUNTIME_PM_OPS(ufshcd_pci_runtime_suspend,
197 ufshcd_pci_runtime_resume,
198 ufshcd_pci_runtime_idle)
201 static const struct pci_device_id ufshcd_pci_tbl[] = {
202 { PCI_VENDOR_ID_SAMSUNG, 0xC00C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
203 { PCI_VDEVICE(INTEL, 0x9DFA), (kernel_ulong_t)&ufs_intel_cnl_hba_vops },
204 { } /* terminate list */
207 MODULE_DEVICE_TABLE(pci, ufshcd_pci_tbl);
209 static struct pci_driver ufshcd_pci_driver = {
211 .id_table = ufshcd_pci_tbl,
212 .probe = ufshcd_pci_probe,
213 .remove = ufshcd_pci_remove,
214 .shutdown = ufshcd_pci_shutdown,
216 .pm = &ufshcd_pci_pm_ops
220 module_pci_driver(ufshcd_pci_driver);
224 MODULE_DESCRIPTION("UFS host controller PCI glue driver");
225 MODULE_LICENSE("GPL");
226 MODULE_VERSION(UFSHCD_DRIVER_VERSION);