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 <init.h>
11 #include <log.h>
12 #include <pci.h>
13 #include <usb.h>
14 #include <asm/io.h>
15
16 #include "ehci.h"
17
18 /* Information about a USB port */
19 struct ehci_pci_priv {
20 struct ehci_ctrl ehci;
21 struct phy phy;
22 };
23
24 #if CONFIG_IS_ENABLED(DM_USB)
ehci_pci_init(struct udevice * dev,struct ehci_hccr ** ret_hccr,struct ehci_hcor ** ret_hcor)25 static int ehci_pci_init(struct udevice *dev, struct ehci_hccr **ret_hccr,
26 struct ehci_hcor **ret_hcor)
27 {
28 struct ehci_pci_priv *priv = dev_get_priv(dev);
29 struct ehci_hccr *hccr;
30 struct ehci_hcor *hcor;
31 int ret;
32 u32 cmd;
33
34 ret = ehci_setup_phy(dev, &priv->phy, 0);
35 if (ret)
36 return ret;
37
38 hccr = (struct ehci_hccr *)dm_pci_map_bar(dev,
39 PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
40 hcor = (struct ehci_hcor *)((uintptr_t) hccr +
41 HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
42
43 debug("EHCI-PCI init hccr %#lx and hcor %#lx hc_length %d\n",
44 (ulong)hccr, (ulong)hcor,
45 (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
46
47 *ret_hccr = hccr;
48 *ret_hcor = hcor;
49
50 /* enable busmaster */
51 dm_pci_read_config32(dev, PCI_COMMAND, &cmd);
52 cmd |= PCI_COMMAND_MASTER;
53 dm_pci_write_config32(dev, PCI_COMMAND, cmd);
54
55 return 0;
56 }
57
58 #else
59
60 #ifdef CONFIG_PCI_EHCI_DEVICE
61 static struct pci_device_id ehci_pci_ids[] = {
62 /* Please add supported PCI EHCI controller ids here */
63 {0x1033, 0x00E0}, /* NEC */
64 {0x10B9, 0x5239}, /* ULI1575 PCI EHCI module ids */
65 {0x12D8, 0x400F}, /* Pericom */
66 {0, 0}
67 };
68 #endif
69
ehci_pci_legacy_init(pci_dev_t pdev,struct ehci_hccr ** ret_hccr,struct ehci_hcor ** ret_hcor)70 static void ehci_pci_legacy_init(pci_dev_t pdev, struct ehci_hccr **ret_hccr,
71 struct ehci_hcor **ret_hcor)
72 {
73 struct ehci_hccr *hccr;
74 struct ehci_hcor *hcor;
75 u32 cmd;
76
77 hccr = (struct ehci_hccr *)pci_map_bar(pdev,
78 PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
79 hcor = (struct ehci_hcor *)((uintptr_t) hccr +
80 HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
81
82 debug("EHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n",
83 (u32)hccr, (u32)hcor,
84 (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
85
86 *ret_hccr = hccr;
87 *ret_hcor = hcor;
88
89 /* enable busmaster */
90 pci_read_config_dword(pdev, PCI_COMMAND, &cmd);
91 cmd |= PCI_COMMAND_MASTER;
92 pci_write_config_dword(pdev, PCI_COMMAND, cmd);
93 }
94
95 /*
96 * Create the appropriate control structures to manage
97 * a new EHCI host controller.
98 */
ehci_hcd_init(int index,enum usb_init_type init,struct ehci_hccr ** ret_hccr,struct ehci_hcor ** ret_hcor)99 int ehci_hcd_init(int index, enum usb_init_type init,
100 struct ehci_hccr **ret_hccr, struct ehci_hcor **ret_hcor)
101 {
102 pci_dev_t pdev;
103
104 #ifdef CONFIG_PCI_EHCI_DEVICE
105 pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVICE);
106 #else
107 pdev = pci_find_class(PCI_CLASS_SERIAL_USB_EHCI, index);
108 #endif
109 if (pdev < 0) {
110 printf("EHCI host controller not found\n");
111 return -1;
112 }
113 ehci_pci_legacy_init(pdev, ret_hccr, ret_hcor);
114
115 return 0;
116 }
117
118 /*
119 * Destroy the appropriate control structures corresponding
120 * the the EHCI host controller.
121 */
ehci_hcd_stop(int index)122 int ehci_hcd_stop(int index)
123 {
124 return 0;
125 }
126 #endif /* !CONFIG_IS_ENABLED(DM_USB) */
127
128 #if CONFIG_IS_ENABLED(DM_USB)
ehci_pci_probe(struct udevice * dev)129 static int ehci_pci_probe(struct udevice *dev)
130 {
131 struct ehci_hccr *hccr;
132 struct ehci_hcor *hcor;
133 int ret;
134
135 ret = ehci_pci_init(dev, &hccr, &hcor);
136 if (ret)
137 return ret;
138
139 return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
140 }
141
ehci_pci_remove(struct udevice * dev)142 static int ehci_pci_remove(struct udevice *dev)
143 {
144 struct ehci_pci_priv *priv = dev_get_priv(dev);
145 int ret;
146
147 ret = ehci_deregister(dev);
148 if (ret)
149 return ret;
150
151 return ehci_shutdown_phy(dev, &priv->phy);
152 }
153
154 static const struct udevice_id ehci_pci_ids[] = {
155 { .compatible = "ehci-pci" },
156 { }
157 };
158
159 U_BOOT_DRIVER(ehci_pci) = {
160 .name = "ehci_pci",
161 .id = UCLASS_USB,
162 .probe = ehci_pci_probe,
163 .remove = ehci_pci_remove,
164 .of_match = ehci_pci_ids,
165 .ops = &ehci_usb_ops,
166 .plat_auto = sizeof(struct usb_plat),
167 .priv_auto = sizeof(struct ehci_pci_priv),
168 .flags = DM_FLAG_ALLOC_PRIV_DMA,
169 };
170
171 static struct pci_device_id ehci_pci_supported[] = {
172 { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_EHCI, ~0) },
173 {},
174 };
175
176 U_BOOT_PCI_DEVICE(ehci_pci, ehci_pci_supported);
177
178 #endif /* CONFIG_IS_ENABLED(DM_USB) */
179