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 = generic_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, 0, 0, PCI_REGION_TYPE,
40 PCI_REGION_MEM);
41 hcor = (struct ehci_hcor *)((uintptr_t) hccr +
42 HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
43
44 debug("EHCI-PCI init hccr %#lx and hcor %#lx hc_length %d\n",
45 (ulong)hccr, (ulong)hcor,
46 (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
47
48 *ret_hccr = hccr;
49 *ret_hcor = hcor;
50
51 /* enable busmaster */
52 dm_pci_read_config32(dev, PCI_COMMAND, &cmd);
53 cmd |= PCI_COMMAND_MASTER;
54 dm_pci_write_config32(dev, PCI_COMMAND, cmd);
55
56 return 0;
57 }
58
59 #else
60
61 #ifdef CONFIG_PCI_EHCI_DEVICE
62 static struct pci_device_id ehci_pci_ids[] = {
63 /* Please add supported PCI EHCI controller ids here */
64 {0x1033, 0x00E0}, /* NEC */
65 {0x10B9, 0x5239}, /* ULI1575 PCI EHCI module ids */
66 {0x12D8, 0x400F}, /* Pericom */
67 {0, 0}
68 };
69 #endif
70
ehci_pci_legacy_init(pci_dev_t pdev,struct ehci_hccr ** ret_hccr,struct ehci_hcor ** ret_hcor)71 static void ehci_pci_legacy_init(pci_dev_t pdev, struct ehci_hccr **ret_hccr,
72 struct ehci_hcor **ret_hcor)
73 {
74 struct ehci_hccr *hccr;
75 struct ehci_hcor *hcor;
76 u32 cmd;
77
78 hccr = (struct ehci_hccr *)pci_map_bar(pdev,
79 PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
80 hcor = (struct ehci_hcor *)((uintptr_t) hccr +
81 HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
82
83 debug("EHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n",
84 (u32)hccr, (u32)hcor,
85 (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
86
87 *ret_hccr = hccr;
88 *ret_hcor = hcor;
89
90 /* enable busmaster */
91 pci_read_config_dword(pdev, PCI_COMMAND, &cmd);
92 cmd |= PCI_COMMAND_MASTER;
93 pci_write_config_dword(pdev, PCI_COMMAND, cmd);
94 }
95
96 /*
97 * Create the appropriate control structures to manage
98 * a new EHCI host controller.
99 */
ehci_hcd_init(int index,enum usb_init_type init,struct ehci_hccr ** ret_hccr,struct ehci_hcor ** ret_hcor)100 int ehci_hcd_init(int index, enum usb_init_type init,
101 struct ehci_hccr **ret_hccr, struct ehci_hcor **ret_hcor)
102 {
103 pci_dev_t pdev;
104
105 #ifdef CONFIG_PCI_EHCI_DEVICE
106 pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVICE);
107 #else
108 pdev = pci_find_class(PCI_CLASS_SERIAL_USB_EHCI, index);
109 #endif
110 if (pdev < 0) {
111 printf("EHCI host controller not found\n");
112 return -1;
113 }
114 ehci_pci_legacy_init(pdev, ret_hccr, ret_hcor);
115
116 return 0;
117 }
118
119 /*
120 * Destroy the appropriate control structures corresponding
121 * the the EHCI host controller.
122 */
ehci_hcd_stop(int index)123 int ehci_hcd_stop(int index)
124 {
125 return 0;
126 }
127 #endif /* !CONFIG_IS_ENABLED(DM_USB) */
128
129 #if CONFIG_IS_ENABLED(DM_USB)
ehci_pci_probe(struct udevice * dev)130 static int ehci_pci_probe(struct udevice *dev)
131 {
132 struct ehci_hccr *hccr;
133 struct ehci_hcor *hcor;
134 int ret;
135
136 ret = ehci_pci_init(dev, &hccr, &hcor);
137 if (ret)
138 return ret;
139
140 return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
141 }
142
ehci_pci_remove(struct udevice * dev)143 static int ehci_pci_remove(struct udevice *dev)
144 {
145 struct ehci_pci_priv *priv = dev_get_priv(dev);
146 int ret;
147
148 ret = ehci_deregister(dev);
149 if (ret)
150 return ret;
151
152 return generic_shutdown_phy(&priv->phy);
153 }
154
155 static const struct udevice_id ehci_pci_ids[] = {
156 { .compatible = "ehci-pci" },
157 { }
158 };
159
160 U_BOOT_DRIVER(ehci_pci) = {
161 .name = "ehci_pci",
162 .id = UCLASS_USB,
163 .probe = ehci_pci_probe,
164 .remove = ehci_pci_remove,
165 .of_match = ehci_pci_ids,
166 .ops = &ehci_usb_ops,
167 .plat_auto = sizeof(struct usb_plat),
168 .priv_auto = sizeof(struct ehci_pci_priv),
169 .flags = DM_FLAG_ALLOC_PRIV_DMA,
170 };
171
172 static struct pci_device_id ehci_pci_supported[] = {
173 { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_EHCI, ~0) },
174 {},
175 };
176
177 U_BOOT_PCI_DEVICE(ehci_pci, ehci_pci_supported);
178
179 #endif /* CONFIG_IS_ENABLED(DM_USB) */
180