]> git.sur5r.net Git - u-boot/blob - drivers/usb/host/usb-sandbox.c
Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR
[u-boot] / drivers / usb / host / usb-sandbox.c
1 /*
2  * (C) Copyright 2015 Google, Inc
3  * Written by Simon Glass <sjg@chromium.org>
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #include <common.h>
9 #include <dm.h>
10 #include <usb.h>
11 #include <dm/root.h>
12
13 struct sandbox_usb_ctrl {
14         int rootdev;
15 };
16
17 static void usbmon_trace(struct udevice *bus, ulong pipe,
18                          struct devrequest *setup, struct udevice *emul)
19 {
20         static const char types[] = "ZICB";
21         int type;
22
23         type = (pipe & USB_PIPE_TYPE_MASK) >> USB_PIPE_TYPE_SHIFT;
24         debug("0 0 S %c%c:%d:%03ld:%ld", types[type],
25               pipe & USB_DIR_IN ? 'i' : 'o',
26               bus->seq,
27               (pipe & USB_PIPE_DEV_MASK) >> USB_PIPE_DEV_SHIFT,
28               (pipe & USB_PIPE_EP_MASK) >> USB_PIPE_EP_SHIFT);
29         if (setup) {
30                 debug(" s %02x %02x %04x %04x %04x", setup->requesttype,
31                       setup->request, setup->value, setup->index,
32                       setup->length);
33         }
34         debug(" %s", emul ? emul->name : "(no emul found)");
35
36         debug("\n");
37 }
38
39 static int sandbox_submit_control(struct udevice *bus,
40                                       struct usb_device *udev,
41                                       unsigned long pipe,
42                                       void *buffer, int length,
43                                       struct devrequest *setup)
44 {
45         struct sandbox_usb_ctrl *ctrl = dev_get_priv(bus);
46         struct udevice *emul;
47         int ret;
48
49         /* Just use child of dev as emulator? */
50         debug("%s: bus=%s\n", __func__, bus->name);
51         ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
52         usbmon_trace(bus, pipe, setup, emul);
53         if (ret)
54                 return ret;
55
56         if (usb_pipedevice(pipe) == ctrl->rootdev) {
57                 if (setup->request == USB_REQ_SET_ADDRESS) {
58                         debug("%s: Set root hub's USB address\n", __func__);
59                         ctrl->rootdev = le16_to_cpu(setup->value);
60                 }
61         }
62
63         ret = usb_emul_control(emul, udev, pipe, buffer, length, setup);
64         if (ret < 0) {
65                 debug("ret=%d\n", ret);
66                 udev->status = ret;
67                 udev->act_len = 0;
68         } else {
69                 udev->status = 0;
70                 udev->act_len = ret;
71         }
72
73         return ret;
74 }
75
76 static int sandbox_submit_bulk(struct udevice *bus, struct usb_device *udev,
77                                unsigned long pipe, void *buffer, int length)
78 {
79         struct udevice *emul;
80         int ret;
81
82         /* Just use child of dev as emulator? */
83         debug("%s: bus=%s\n", __func__, bus->name);
84         ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
85         usbmon_trace(bus, pipe, NULL, emul);
86         if (ret)
87                 return ret;
88         ret = usb_emul_bulk(emul, udev, pipe, buffer, length);
89         if (ret < 0) {
90                 debug("ret=%d\n", ret);
91                 udev->status = ret;
92                 udev->act_len = 0;
93         } else {
94                 udev->status = 0;
95                 udev->act_len = ret;
96         }
97
98         return ret;
99 }
100
101 static int sandbox_submit_int(struct udevice *bus, struct usb_device *udev,
102                               unsigned long pipe, void *buffer, int length,
103                               int interval)
104 {
105         struct udevice *emul;
106         int ret;
107
108         /* Just use child of dev as emulator? */
109         debug("%s: bus=%s\n", __func__, bus->name);
110         ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
111         usbmon_trace(bus, pipe, NULL, emul);
112         if (ret)
113                 return ret;
114         ret = usb_emul_int(emul, udev, pipe, buffer, length, interval);
115
116         return ret;
117 }
118
119 static int sandbox_alloc_device(struct udevice *dev, struct usb_device *udev)
120 {
121         struct sandbox_usb_ctrl *ctrl = dev_get_priv(dev);
122
123         /*
124          * Root hub will be the first device to be initailized.
125          * If this device is a root hub, initialize its device speed
126          * to high speed as we are a USB 2.0 controller.
127          */
128         if (ctrl->rootdev == 0)
129                 udev->speed = USB_SPEED_HIGH;
130
131         return 0;
132 }
133
134 static int sandbox_usb_probe(struct udevice *dev)
135 {
136         return 0;
137 }
138
139 static const struct dm_usb_ops sandbox_usb_ops = {
140         .control        = sandbox_submit_control,
141         .bulk           = sandbox_submit_bulk,
142         .interrupt      = sandbox_submit_int,
143         .alloc_device   = sandbox_alloc_device,
144 };
145
146 static const struct udevice_id sandbox_usb_ids[] = {
147         { .compatible = "sandbox,usb" },
148         { }
149 };
150
151 U_BOOT_DRIVER(usb_sandbox) = {
152         .name   = "usb_sandbox",
153         .id     = UCLASS_USB,
154         .of_match = sandbox_usb_ids,
155         .probe = sandbox_usb_probe,
156         .ops    = &sandbox_usb_ops,
157         .priv_auto_alloc_size = sizeof(struct sandbox_usb_ctrl),
158 };