1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Synopsys G210 Test Chip driver 4 * 5 * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com) 6 * 7 * Authors: Joao Pinto <jpinto@synopsys.com> 8 */ 9 10 #include <ufs/ufshcd.h> 11 #include "ufshcd-dwc.h" 12 #include "tc-dwc-g210.h" 13 14 #include <linux/module.h> 15 #include <linux/pci.h> 16 #include <linux/pm_runtime.h> 17 18 /* Test Chip type expected values */ 19 #define TC_G210_20BIT 20 20 #define TC_G210_40BIT 40 21 #define TC_G210_INV 0 22 23 static int tc_type = TC_G210_INV; 24 module_param(tc_type, int, 0); 25 MODULE_PARM_DESC(tc_type, "Test Chip Type (20 = 20-bit, 40 = 40-bit)"); 26 27 /* 28 * struct ufs_hba_dwc_vops - UFS DWC specific variant operations 29 */ 30 static struct ufs_hba_variant_ops tc_dwc_g210_pci_hba_vops = { 31 .name = "tc-dwc-g210-pci", 32 .link_startup_notify = ufshcd_dwc_link_startup_notify, 33 }; 34 35 /** 36 * tc_dwc_g210_pci_remove - de-allocate PCI/SCSI host and host memory space 37 * data structure memory 38 * @pdev: pointer to PCI handle 39 */ 40 static void tc_dwc_g210_pci_remove(struct pci_dev *pdev) 41 { 42 struct ufs_hba *hba = pci_get_drvdata(pdev); 43 44 pm_runtime_forbid(&pdev->dev); 45 pm_runtime_get_noresume(&pdev->dev); 46 ufshcd_remove(hba); 47 } 48 49 /** 50 * tc_dwc_g210_pci_probe - probe routine of the driver 51 * @pdev: pointer to PCI device handle 52 * @id: PCI device id 53 * 54 * Return: 0 on success, non-zero value on failure. 55 */ 56 static int 57 tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) 58 { 59 struct ufs_hba *hba; 60 void __iomem *mmio_base; 61 int err; 62 63 /* Check Test Chip type and set the specific setup routine */ 64 if (tc_type == TC_G210_20BIT) { 65 tc_dwc_g210_pci_hba_vops.phy_initialization = 66 tc_dwc_g210_config_20_bit; 67 } else if (tc_type == TC_G210_40BIT) { 68 tc_dwc_g210_pci_hba_vops.phy_initialization = 69 tc_dwc_g210_config_40_bit; 70 } else { 71 dev_err(&pdev->dev, "test chip version not specified\n"); 72 return -EPERM; 73 } 74 75 err = pcim_enable_device(pdev); 76 if (err) { 77 dev_err(&pdev->dev, "pcim_enable_device failed\n"); 78 return err; 79 } 80 81 pci_set_master(pdev); 82 83 err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD); 84 if (err < 0) { 85 dev_err(&pdev->dev, "request and iomap failed\n"); 86 return err; 87 } 88 89 mmio_base = pcim_iomap_table(pdev)[0]; 90 91 err = ufshcd_alloc_host(&pdev->dev, &hba); 92 if (err) { 93 dev_err(&pdev->dev, "Allocation failed\n"); 94 return err; 95 } 96 97 hba->vops = &tc_dwc_g210_pci_hba_vops; 98 99 err = ufshcd_init(hba, mmio_base, pdev->irq); 100 if (err) { 101 dev_err(&pdev->dev, "Initialization failed\n"); 102 return err; 103 } 104 105 pm_runtime_put_noidle(&pdev->dev); 106 pm_runtime_allow(&pdev->dev); 107 108 return 0; 109 } 110 111 static const struct dev_pm_ops tc_dwc_g210_pci_pm_ops = { 112 SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume) 113 SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL) 114 .prepare = ufshcd_suspend_prepare, 115 .complete = ufshcd_resume_complete, 116 }; 117 118 static const struct pci_device_id tc_dwc_g210_pci_tbl[] = { 119 { PCI_VENDOR_ID_SYNOPSYS, 0xB101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 120 { PCI_VENDOR_ID_SYNOPSYS, 0xB102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 121 { } /* terminate list */ 122 }; 123 124 MODULE_DEVICE_TABLE(pci, tc_dwc_g210_pci_tbl); 125 126 static struct pci_driver tc_dwc_g210_pci_driver = { 127 .name = "tc-dwc-g210-pci", 128 .id_table = tc_dwc_g210_pci_tbl, 129 .probe = tc_dwc_g210_pci_probe, 130 .remove = tc_dwc_g210_pci_remove, 131 .driver = { 132 .pm = &tc_dwc_g210_pci_pm_ops 133 }, 134 }; 135 136 module_pci_driver(tc_dwc_g210_pci_driver); 137 138 MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>"); 139 MODULE_DESCRIPTION("Synopsys Test Chip G210 PCI glue driver"); 140 MODULE_LICENSE("Dual BSD/GPL"); 141