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