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