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5db43992 SG |
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/device-internal.h> | |
12 | ||
13 | DECLARE_GLOBAL_DATA_PTR; | |
14 | ||
15 | /* We only support up to 8 */ | |
80438a6c | 16 | #define SANDBOX_NUM_PORTS 4 |
5db43992 SG |
17 | |
18 | struct sandbox_hub_platdata { | |
19 | struct usb_dev_platdata plat; | |
20 | int port; /* Port number (numbered from 0) */ | |
21 | }; | |
22 | ||
23 | enum { | |
24 | STRING_MANUFACTURER = 1, | |
25 | STRING_PRODUCT, | |
26 | STRING_SERIAL, | |
27 | ||
28 | STRING_count, | |
29 | }; | |
30 | ||
31 | static struct usb_string hub_strings[] = { | |
32 | {STRING_MANUFACTURER, "sandbox"}, | |
33 | {STRING_PRODUCT, "hub"}, | |
34 | {STRING_SERIAL, "2345"}, | |
093f2dce | 35 | {}, |
5db43992 SG |
36 | }; |
37 | ||
38 | static struct usb_device_descriptor hub_device_desc = { | |
39 | .bLength = sizeof(hub_device_desc), | |
40 | .bDescriptorType = USB_DT_DEVICE, | |
41 | ||
42 | .bcdUSB = __constant_cpu_to_le16(0x0200), | |
43 | ||
44 | .bDeviceClass = USB_CLASS_HUB, | |
45 | .bDeviceSubClass = 0, | |
46 | .bDeviceProtocol = 0, | |
47 | ||
48 | .idVendor = __constant_cpu_to_le16(0x1234), | |
49 | .idProduct = __constant_cpu_to_le16(0x5678), | |
50 | .iManufacturer = STRING_MANUFACTURER, | |
51 | .iProduct = STRING_PRODUCT, | |
52 | .iSerialNumber = STRING_SERIAL, | |
53 | .bNumConfigurations = 1, | |
54 | }; | |
55 | ||
56 | static struct usb_config_descriptor hub_config1 = { | |
57 | .bLength = sizeof(hub_config1), | |
58 | .bDescriptorType = USB_DT_CONFIG, | |
59 | ||
60 | /* wTotalLength is set up by usb-emul-uclass */ | |
61 | .bNumInterfaces = 1, | |
62 | .bConfigurationValue = 0, | |
63 | .iConfiguration = 0, | |
64 | .bmAttributes = 1 << 7, | |
65 | .bMaxPower = 50, | |
66 | }; | |
67 | ||
68 | static struct usb_interface_descriptor hub_interface0 = { | |
69 | .bLength = sizeof(hub_interface0), | |
70 | .bDescriptorType = USB_DT_INTERFACE, | |
71 | ||
72 | .bInterfaceNumber = 0, | |
73 | .bAlternateSetting = 0, | |
74 | .bNumEndpoints = 1, | |
75 | .bInterfaceClass = USB_CLASS_HUB, | |
76 | .bInterfaceSubClass = 0, | |
77 | .bInterfaceProtocol = US_PR_CB, | |
78 | .iInterface = 0, | |
79 | }; | |
80 | ||
81 | static struct usb_endpoint_descriptor hub_endpoint0_in = { | |
82 | .bLength = USB_DT_ENDPOINT_SIZE, | |
83 | .bDescriptorType = USB_DT_ENDPOINT, | |
84 | ||
85 | .bEndpointAddress = 1 | USB_DIR_IN, | |
86 | .bmAttributes = USB_ENDPOINT_XFER_INT, | |
87 | .wMaxPacketSize = __constant_cpu_to_le16(1024), | |
88 | .bInterval = 0, | |
89 | }; | |
90 | ||
91 | static struct usb_hub_descriptor hub_desc = { | |
92 | .bLength = sizeof(hub_desc), | |
93 | .bDescriptorType = USB_DT_HUB, | |
94 | .bNbrPorts = SANDBOX_NUM_PORTS, | |
95 | .wHubCharacteristics = __constant_cpu_to_le16(1 << 0 | 1 << 3 | | |
96 | 1 << 7), | |
97 | .bPwrOn2PwrGood = 2, | |
98 | .bHubContrCurrent = 5, | |
99 | .DeviceRemovable = {0, 0xff}, /* all ports removeable */ | |
100 | #if SANDBOX_NUM_PORTS > 8 | |
101 | #error "This code sets up an incorrect mask" | |
102 | #endif | |
103 | }; | |
104 | ||
105 | static void *hub_desc_list[] = { | |
106 | &hub_device_desc, | |
107 | &hub_config1, | |
108 | &hub_interface0, | |
109 | &hub_endpoint0_in, | |
110 | &hub_desc, | |
111 | NULL, | |
112 | }; | |
113 | ||
114 | struct sandbox_hub_priv { | |
115 | int status[SANDBOX_NUM_PORTS]; | |
116 | int change[SANDBOX_NUM_PORTS]; | |
117 | }; | |
118 | ||
119 | static struct udevice *hub_find_device(struct udevice *hub, int port) | |
120 | { | |
121 | struct udevice *dev; | |
122 | ||
123 | for (device_find_first_child(hub, &dev); | |
124 | dev; | |
125 | device_find_next_child(&dev)) { | |
126 | struct sandbox_hub_platdata *plat; | |
127 | ||
128 | plat = dev_get_parent_platdata(dev); | |
129 | if (plat->port == port) | |
130 | return dev; | |
131 | } | |
132 | ||
133 | return NULL; | |
134 | } | |
135 | ||
136 | static int clrset_post_state(struct udevice *hub, int port, int clear, int set) | |
137 | { | |
138 | struct sandbox_hub_priv *priv = dev_get_priv(hub); | |
139 | int *status = &priv->status[port]; | |
140 | int *change = &priv->change[port]; | |
141 | int ret = 0; | |
142 | ||
143 | if ((clear | set) & USB_PORT_STAT_POWER) { | |
144 | struct udevice *dev = hub_find_device(hub, port); | |
145 | ||
146 | if (dev) { | |
147 | if (set & USB_PORT_STAT_POWER) { | |
148 | ret = device_probe(dev); | |
149 | debug("%s: %s: power on, probed, ret=%d\n", | |
150 | __func__, dev->name, ret); | |
151 | if (!ret) { | |
152 | set |= USB_PORT_STAT_CONNECTION | | |
153 | USB_PORT_STAT_ENABLE; | |
154 | } | |
155 | ||
156 | } else if (clear & USB_PORT_STAT_POWER) { | |
157 | debug("%s: %s: power off, removed, ret=%d\n", | |
158 | __func__, dev->name, ret); | |
159 | ret = device_remove(dev); | |
160 | clear |= USB_PORT_STAT_CONNECTION; | |
161 | } | |
162 | } | |
163 | } | |
164 | *change |= *status & clear; | |
165 | *change |= ~*status & set; | |
166 | *change &= 0x1f; | |
167 | *status = (*status & ~clear) | set; | |
168 | ||
169 | return ret; | |
170 | } | |
171 | ||
172 | static int sandbox_hub_submit_control_msg(struct udevice *bus, | |
173 | struct usb_device *udev, | |
174 | unsigned long pipe, | |
175 | void *buffer, int length, | |
176 | struct devrequest *setup) | |
177 | { | |
178 | struct sandbox_hub_priv *priv = dev_get_priv(bus); | |
179 | int ret = 0; | |
180 | ||
181 | if (pipe == usb_rcvctrlpipe(udev, 0)) { | |
182 | switch (setup->requesttype) { | |
183 | case USB_RT_HUB | USB_DIR_IN: | |
184 | switch (setup->request) { | |
185 | case USB_REQ_GET_STATUS: { | |
186 | struct usb_hub_status *hubsts = buffer; | |
187 | ||
188 | hubsts->wHubStatus = 0; | |
189 | hubsts->wHubChange = 0; | |
190 | udev->status = 0; | |
191 | udev->act_len = sizeof(*hubsts); | |
192 | return 0; | |
193 | } | |
194 | default: | |
195 | debug("%s: rx ctl requesttype=%x, request=%x\n", | |
196 | __func__, setup->requesttype, | |
197 | setup->request); | |
198 | break; | |
199 | } | |
200 | case USB_RT_PORT | USB_DIR_IN: | |
201 | switch (setup->request) { | |
202 | case USB_REQ_GET_STATUS: { | |
203 | struct usb_port_status *portsts = buffer; | |
204 | int port; | |
205 | ||
206 | port = (setup->index & USB_HUB_PORT_MASK) - 1; | |
207 | portsts->wPortStatus = priv->status[port]; | |
208 | portsts->wPortChange = priv->change[port]; | |
209 | udev->status = 0; | |
210 | udev->act_len = sizeof(*portsts); | |
211 | return 0; | |
212 | } | |
213 | } | |
214 | default: | |
215 | debug("%s: rx ctl requesttype=%x, request=%x\n", | |
216 | __func__, setup->requesttype, setup->request); | |
217 | break; | |
218 | } | |
219 | } else if (pipe == usb_sndctrlpipe(udev, 0)) { | |
220 | switch (setup->requesttype) { | |
221 | case USB_RT_PORT: | |
222 | switch (setup->request) { | |
223 | case USB_REQ_SET_FEATURE: { | |
224 | int port; | |
225 | ||
226 | port = (setup->index & USB_HUB_PORT_MASK) - 1; | |
227 | debug("set feature port=%x, feature=%x\n", | |
228 | port, setup->value); | |
229 | if (setup->value < USB_PORT_FEAT_C_CONNECTION) { | |
230 | ret = clrset_post_state(bus, port, 0, | |
231 | 1 << setup->value); | |
232 | } else { | |
233 | debug(" ** Invalid feature\n"); | |
234 | } | |
235 | return ret; | |
236 | } | |
237 | case USB_REQ_CLEAR_FEATURE: { | |
238 | int port; | |
239 | ||
240 | port = (setup->index & USB_HUB_PORT_MASK) - 1; | |
241 | debug("clear feature port=%x, feature=%x\n", | |
242 | port, setup->value); | |
243 | if (setup->value < USB_PORT_FEAT_C_CONNECTION) { | |
244 | ret = clrset_post_state(bus, port, | |
245 | 1 << setup->value, 0); | |
246 | } else { | |
247 | priv->change[port] &= 1 << | |
248 | (setup->value - 16); | |
249 | } | |
250 | udev->status = 0; | |
251 | return 0; | |
252 | } | |
253 | default: | |
254 | debug("%s: tx ctl requesttype=%x, request=%x\n", | |
255 | __func__, setup->requesttype, | |
256 | setup->request); | |
257 | break; | |
258 | } | |
259 | default: | |
260 | debug("%s: tx ctl requesttype=%x, request=%x\n", | |
261 | __func__, setup->requesttype, setup->request); | |
262 | break; | |
263 | } | |
264 | } | |
265 | debug("pipe=%lx\n", pipe); | |
266 | ||
267 | return -EIO; | |
268 | } | |
269 | ||
270 | static int sandbox_hub_bind(struct udevice *dev) | |
271 | { | |
272 | return usb_emul_setup_device(dev, PACKET_SIZE_64, hub_strings, | |
273 | hub_desc_list); | |
274 | } | |
275 | ||
276 | static int sandbox_child_post_bind(struct udevice *dev) | |
277 | { | |
278 | struct sandbox_hub_platdata *plat = dev_get_parent_platdata(dev); | |
279 | ||
e160f7d4 SG |
280 | plat->port = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "reg", |
281 | -1); | |
5db43992 SG |
282 | |
283 | return 0; | |
284 | } | |
285 | ||
286 | static const struct dm_usb_ops sandbox_usb_hub_ops = { | |
287 | .control = sandbox_hub_submit_control_msg, | |
288 | }; | |
289 | ||
290 | static const struct udevice_id sandbox_usb_hub_ids[] = { | |
291 | { .compatible = "sandbox,usb-hub" }, | |
292 | { } | |
293 | }; | |
294 | ||
295 | U_BOOT_DRIVER(usb_sandbox_hub) = { | |
296 | .name = "usb_sandbox_hub", | |
297 | .id = UCLASS_USB_EMUL, | |
298 | .of_match = sandbox_usb_hub_ids, | |
299 | .bind = sandbox_hub_bind, | |
300 | .ops = &sandbox_usb_hub_ops, | |
301 | .priv_auto_alloc_size = sizeof(struct sandbox_hub_priv), | |
302 | .per_child_platdata_auto_alloc_size = | |
303 | sizeof(struct sandbox_hub_platdata), | |
304 | .child_post_bind = sandbox_child_post_bind, | |
305 | }; |