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)
ehci_pci_init(struct udevice * dev,struct ehci_hccr ** ret_hccr,struct ehci_hcor ** ret_hcor)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
ehci_pci_legacy_init(pci_dev_t pdev,struct ehci_hccr ** ret_hccr,struct ehci_hcor ** ret_hcor)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 */
ehci_hcd_init(int index,enum usb_init_type init,struct ehci_hccr ** ret_hccr,struct ehci_hcor ** ret_hcor)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 */
ehci_hcd_stop(int index)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)
ehci_pci_probe(struct udevice * dev)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
ehci_pci_remove(struct udevice * dev)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