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
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
* This file is part of the coreboot project.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/acpi_device.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <drivers/usb/acpi/chip.h>
#include <intelblocks/acpi.h>
#include <intelblocks/xhci.h>
#include <soc/pci_devs.h>
#define XHCI_USB2 2
#define XHCI_USB3 3
/* Current Connect Status */
#define XHCI_STATUS_CCS (1 << 0)
static bool is_usb_port_connected(const struct xhci_usb_info *info,
unsigned int port_type, unsigned int port_id)
{
uintptr_t port_sts_reg;
uint32_t port_status;
const struct resource *res;
/* Support only USB2 or USB3 ports */
if (!(port_type == XHCI_USB2 || port_type == XHCI_USB3))
return false;
/* Mark out of bound port id as not connected */
if ((port_type == XHCI_USB2 && port_id >= info->num_usb2_ports) ||
(port_type == XHCI_USB3 && port_id >= info->num_usb3_ports))
return false;
/* Calculate port status register address and read the status */
res = find_resource(PCH_DEV_XHCI, PCI_BASE_ADDRESS_0);
/* If the memory BAR is not allocated for XHCI, leave the devices enabled */
if (!res)
return true;
if (port_type == XHCI_USB2)
port_sts_reg = (uintptr_t)res->base +
info->usb2_port_status_reg + port_id * 0x10;
else
port_sts_reg = (uintptr_t)res->base +
info->usb3_port_status_reg + port_id * 0x10;
port_status = read32((void *)port_sts_reg);
/* Ensure that the status is not all 1s */
if (port_status == 0xffffffff)
return false;
return !!(port_status & XHCI_STATUS_CCS);
}
void usb_xhci_disable_unused(bool (*ext_usb_xhci_en_cb)(unsigned int port_type,
unsigned int port_id))
{
struct device *xhci, *hub = NULL, *port = NULL;
const struct xhci_usb_info *info = soc_get_xhci_usb_info();
struct drivers_usb_acpi_config *config;
bool enable;
xhci = pcidev_path_on_root(PCH_DEVFN_XHCI);
if (!xhci) {
printk(BIOS_ERR, "%s: Could not locate XHCI device in DT\n", __func__);
return;
}
while ((hub = dev_bus_each_child(xhci->link_list, hub)) != NULL) {
while ((port = dev_bus_each_child(hub->link_list, port)) != NULL) {
enable = true;
config = config_of(port);
if (config->type == UPC_TYPE_INTERNAL) {
/* Probe the connect status of internal ports */
enable = is_usb_port_connected(info, port->path.usb.port_type,
port->path.usb.port_id);
} else if (ext_usb_xhci_en_cb) {
/* Check the mainboard for the status of external ports */
enable = ext_usb_xhci_en_cb(port->path.usb.port_type,
port->path.usb.port_id);
}
if (!enable) {
printk(BIOS_INFO, "%s: Disabling USB Type%d Id%d\n",
__func__, port->path.usb.port_type,
port->path.usb.port_id);
port->enabled = 0;
}
}
}
}
__weak void soc_xhci_init(struct device *dev) { /* no-op */ }
static struct device_operations usb_xhci_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = soc_xhci_init,
.ops_pci = &pci_dev_ops_pci,
.scan_bus = scan_static_bus,
#if CONFIG(HAVE_ACPI_TABLES)
.acpi_name = soc_acpi_name,
#endif
};
static const unsigned short pci_device_ids[] = {
PCI_DEVICE_ID_INTEL_APL_XHCI,
PCI_DEVICE_ID_INTEL_CNL_LP_XHCI,
PCI_DEVICE_ID_INTEL_GLK_XHCI,
PCI_DEVICE_ID_INTEL_SPT_LP_XHCI,
PCI_DEVICE_ID_INTEL_SPT_H_XHCI,
PCI_DEVICE_ID_INTEL_LWB_XHCI,
PCI_DEVICE_ID_INTEL_LWB_XHCI_SUPER,
PCI_DEVICE_ID_INTEL_KBP_H_XHCI,
PCI_DEVICE_ID_INTEL_CNP_H_XHCI,
PCI_DEVICE_ID_INTEL_ICP_LP_XHCI,
PCI_DEVICE_ID_INTEL_CMP_LP_XHCI,
PCI_DEVICE_ID_INTEL_CMP_H_XHCI,
PCI_DEVICE_ID_INTEL_TGP_LP_XHCI,
PCI_DEVICE_ID_INTEL_MCC_XHCI,
PCI_DEVICE_ID_INTEL_JSP_XHCI,
0
};
static const struct pci_driver pch_usb_xhci __pci_driver = {
.ops = &usb_xhci_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};
|
