summaryrefslogtreecommitdiffstats
path: root/drivers/usb/host/ehci-pci.c
blob: d607088fdb9471ad78e11b8edc1adc33f4f14ba5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
/*-
 * Copyright (c) 2007-2008, Juniper Networks, Inc.
 * All rights reserved.
 *
 * SPDX-License-Identifier:	GPL-2.0
 */

#include <common.h>
#include <dm.h>
#include <errno.h>
#include <pci.h>
#include <usb.h>

#include "ehci.h"

/* Information about a USB port */
struct ehci_pci_priv {
	struct ehci_ctrl ehci;
};

static void ehci_pci_common_init(pci_dev_t pdev, struct ehci_hccr **ret_hccr,
				 struct ehci_hcor **ret_hcor)
{
	struct ehci_hccr *hccr;
	struct ehci_hcor *hcor;
	uint32_t cmd;

	hccr = (struct ehci_hccr *)pci_map_bar(pdev,
			PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
	hcor = (struct ehci_hcor *)((uint32_t) hccr +
			HC_LENGTH(ehci_readl(&hccr->cr_capbase)));

	debug("EHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n",
	      (uint32_t)hccr, (uint32_t)hcor,
	      (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));

	*ret_hccr = hccr;
	*ret_hcor = hcor;

	/* enable busmaster */
	pci_read_config_dword(pdev, PCI_COMMAND, &cmd);
	cmd |= PCI_COMMAND_MASTER;
	pci_write_config_dword(pdev, PCI_COMMAND, cmd);
}

#ifndef CONFIG_DM_USB

#ifdef CONFIG_PCI_EHCI_DEVICE
static struct pci_device_id ehci_pci_ids[] = {
	/* Please add supported PCI EHCI controller ids here */
	{0x1033, 0x00E0},	/* NEC */
	{0x10B9, 0x5239},	/* ULI1575 PCI EHCI module ids */
	{0x12D8, 0x400F},	/* Pericom */
	{0, 0}
};
#endif

/*
 * Create the appropriate control structures to manage
 * a new EHCI host controller.
 */
int ehci_hcd_init(int index, enum usb_init_type init,
		struct ehci_hccr **ret_hccr, struct ehci_hcor **ret_hcor)
{
	pci_dev_t pdev;

#ifdef CONFIG_PCI_EHCI_DEVICE
	pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVICE);
#else
	pdev = pci_find_class(PCI_CLASS_SERIAL_USB_EHCI, index);
#endif
	if (pdev < 0) {
		printf("EHCI host controller not found\n");
		return -1;
	}
	ehci_pci_common_init(pdev, ret_hccr, ret_hcor);

	return 0;
}

/*
 * Destroy the appropriate control structures corresponding
 * the the EHCI host controller.
 */
int ehci_hcd_stop(int index)
{
	return 0;
}
#endif /* nCONFIG_DM_USB */

#ifdef CONFIG_DM_USB
static int ehci_pci_probe(struct udevice *dev)
{
	struct ehci_hccr *hccr;
	struct ehci_hcor *hcor;

	ehci_pci_common_init(dm_pci_get_bdf(dev), &hccr, &hcor);

	return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
}

static int ehci_pci_remove(struct udevice *dev)
{
	int ret;

	ret = ehci_deregister(dev);
	if (ret)
		return ret;

	return 0;
}

U_BOOT_DRIVER(ehci_pci) = {
	.name	= "ehci_pci",
	.id	= UCLASS_USB,
	.probe = ehci_pci_probe,
	.remove = ehci_pci_remove,
	.ops	= &ehci_usb_ops,
	.platdata_auto_alloc_size = sizeof(struct usb_platdata),
	.priv_auto_alloc_size = sizeof(struct ehci_pci_priv),
	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
};

static struct pci_device_id ehci_pci_supported[] = {
	{ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_EHCI, ~0) },
	{},
};

U_BOOT_PCI_DEVICE(ehci_pci, ehci_pci_supported);

#endif /* CONFIG_DM_USB */
OpenPOWER on IntegriCloud