1 // SPDX-License-Identifier: GPL-2.0 2 /*- 3 * Copyright (c) 2007-2008, Juniper Networks, Inc. 4 * All rights reserved. 5 */ 6 7 #include <common.h> 8 #include <dm.h> 9 #include <errno.h> 10 #include <pci.h> 11 #include <usb.h> 12 #include <asm/io.h> 13 14 #include "ehci.h" 15 16 /* Information about a USB port */ 17 struct ehci_pci_priv { 18 struct ehci_ctrl ehci; 19 struct phy phy; 20 }; 21 22 #if CONFIG_IS_ENABLED(DM_USB) 23 static int ehci_pci_init(struct udevice *dev, struct ehci_hccr **ret_hccr, 24 struct ehci_hcor **ret_hcor) 25 { 26 struct ehci_pci_priv *priv = dev_get_priv(dev); 27 struct ehci_hccr *hccr; 28 struct ehci_hcor *hcor; 29 int ret; 30 u32 cmd; 31 32 ret = ehci_setup_phy(dev, &priv->phy, 0); 33 if (ret) 34 return ret; 35 36 hccr = (struct ehci_hccr *)dm_pci_map_bar(dev, 37 PCI_BASE_ADDRESS_0, PCI_REGION_MEM); 38 hcor = (struct ehci_hcor *)((uintptr_t) hccr + 39 HC_LENGTH(ehci_readl(&hccr->cr_capbase))); 40 41 debug("EHCI-PCI init hccr %#lx and hcor %#lx hc_length %d\n", 42 (ulong)hccr, (ulong)hcor, 43 (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase))); 44 45 *ret_hccr = hccr; 46 *ret_hcor = hcor; 47 48 /* enable busmaster */ 49 dm_pci_read_config32(dev, PCI_COMMAND, &cmd); 50 cmd |= PCI_COMMAND_MASTER; 51 dm_pci_write_config32(dev, PCI_COMMAND, cmd); 52 53 return 0; 54 } 55 56 #else 57 58 #ifdef CONFIG_PCI_EHCI_DEVICE 59 static struct pci_device_id ehci_pci_ids[] = { 60 /* Please add supported PCI EHCI controller ids here */ 61 {0x1033, 0x00E0}, /* NEC */ 62 {0x10B9, 0x5239}, /* ULI1575 PCI EHCI module ids */ 63 {0x12D8, 0x400F}, /* Pericom */ 64 {0, 0} 65 }; 66 #endif 67 68 static void ehci_pci_legacy_init(pci_dev_t pdev, struct ehci_hccr **ret_hccr, 69 struct ehci_hcor **ret_hcor) 70 { 71 struct ehci_hccr *hccr; 72 struct ehci_hcor *hcor; 73 u32 cmd; 74 75 hccr = (struct ehci_hccr *)pci_map_bar(pdev, 76 PCI_BASE_ADDRESS_0, PCI_REGION_MEM); 77 hcor = (struct ehci_hcor *)((uintptr_t) hccr + 78 HC_LENGTH(ehci_readl(&hccr->cr_capbase))); 79 80 debug("EHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n", 81 (u32)hccr, (u32)hcor, 82 (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase))); 83 84 *ret_hccr = hccr; 85 *ret_hcor = hcor; 86 87 /* enable busmaster */ 88 pci_read_config_dword(pdev, PCI_COMMAND, &cmd); 89 cmd |= PCI_COMMAND_MASTER; 90 pci_write_config_dword(pdev, PCI_COMMAND, cmd); 91 } 92 93 /* 94 * Create the appropriate control structures to manage 95 * a new EHCI host controller. 96 */ 97 int ehci_hcd_init(int index, enum usb_init_type init, 98 struct ehci_hccr **ret_hccr, struct ehci_hcor **ret_hcor) 99 { 100 pci_dev_t pdev; 101 102 #ifdef CONFIG_PCI_EHCI_DEVICE 103 pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVICE); 104 #else 105 pdev = pci_find_class(PCI_CLASS_SERIAL_USB_EHCI, index); 106 #endif 107 if (pdev < 0) { 108 printf("EHCI host controller not found\n"); 109 return -1; 110 } 111 ehci_pci_legacy_init(pdev, ret_hccr, ret_hcor); 112 113 return 0; 114 } 115 116 /* 117 * Destroy the appropriate control structures corresponding 118 * the the EHCI host controller. 119 */ 120 int ehci_hcd_stop(int index) 121 { 122 return 0; 123 } 124 #endif /* !CONFIG_IS_ENABLED(DM_USB) */ 125 126 #if CONFIG_IS_ENABLED(DM_USB) 127 static int ehci_pci_probe(struct udevice *dev) 128 { 129 struct ehci_hccr *hccr; 130 struct ehci_hcor *hcor; 131 int ret; 132 133 ret = ehci_pci_init(dev, &hccr, &hcor); 134 if (ret) 135 return ret; 136 137 return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST); 138 } 139 140 static int ehci_pci_remove(struct udevice *dev) 141 { 142 struct ehci_pci_priv *priv = dev_get_priv(dev); 143 int ret; 144 145 ret = ehci_deregister(dev); 146 if (ret) 147 return ret; 148 149 return ehci_shutdown_phy(dev, &priv->phy); 150 } 151 152 static const struct udevice_id ehci_pci_ids[] = { 153 { .compatible = "ehci-pci" }, 154 { } 155 }; 156 157 U_BOOT_DRIVER(ehci_pci) = { 158 .name = "ehci_pci", 159 .id = UCLASS_USB, 160 .probe = ehci_pci_probe, 161 .remove = ehci_pci_remove, 162 .of_match = ehci_pci_ids, 163 .ops = &ehci_usb_ops, 164 .platdata_auto_alloc_size = sizeof(struct usb_platdata), 165 .priv_auto_alloc_size = sizeof(struct ehci_pci_priv), 166 .flags = DM_FLAG_ALLOC_PRIV_DMA, 167 }; 168 169 static struct pci_device_id ehci_pci_supported[] = { 170 { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_EHCI, ~0) }, 171 {}, 172 }; 173 174 U_BOOT_PCI_DEVICE(ehci_pci, ehci_pci_supported); 175 176 #endif /* CONFIG_IS_ENABLED(DM_USB) */ 177