1 /*
2 * Haiku Backend for libusb
3 * Copyright © 2014 Akshay Jaggi <akshay1994.leo@gmail.com>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20
21 #include <unistd.h>
22 #include <string.h>
23 #include <stdlib.h>
24 #include <new>
25 #include <vector>
26
27 #include "haiku_usb.h"
28
29 USBRoster gUsbRoster;
30 int32 gInitCount = 0;
31
32 static int haiku_get_config_descriptor(struct libusb_device *, uint8_t,
33 unsigned char *, size_t, int *);
34
35 static int
haiku_init(struct libusb_context * ctx)36 haiku_init(struct libusb_context *ctx)
37 {
38 if (atomic_add(&gInitCount, 1) == 0)
39 return gUsbRoster.Start();
40 return LIBUSB_SUCCESS;
41 }
42
43 static void
haiku_exit(struct libusb_context * ctx)44 haiku_exit(struct libusb_context *ctx)
45 {
46 UNUSED(ctx);
47 if (atomic_add(&gInitCount, -1) == 1)
48 gUsbRoster.Stop();
49 }
50
51 static int
haiku_open(struct libusb_device_handle * dev_handle)52 haiku_open(struct libusb_device_handle *dev_handle)
53 {
54 USBDevice *dev = *((USBDevice **)dev_handle->dev->os_priv);
55 USBDeviceHandle *handle = new(std::nothrow) USBDeviceHandle(dev);
56 if (handle == NULL)
57 return LIBUSB_ERROR_NO_MEM;
58 if (handle->InitCheck() == false) {
59 delete handle;
60 return LIBUSB_ERROR_NO_DEVICE;
61 }
62 *((USBDeviceHandle **)dev_handle->os_priv) = handle;
63 return LIBUSB_SUCCESS;
64 }
65
66 static void
haiku_close(struct libusb_device_handle * dev_handle)67 haiku_close(struct libusb_device_handle *dev_handle)
68 {
69 USBDeviceHandle *handle = *((USBDeviceHandle **)dev_handle->os_priv);
70 if (handle == NULL)
71 return;
72 delete handle;
73 *((USBDeviceHandle **)dev_handle->os_priv) = NULL;
74 }
75
76 static int
haiku_get_device_descriptor(struct libusb_device * device,unsigned char * buffer,int * host_endian)77 haiku_get_device_descriptor(struct libusb_device *device, unsigned char *buffer, int *host_endian)
78 {
79 USBDevice *dev = *((USBDevice **)device->os_priv);
80 memcpy(buffer, dev->Descriptor(), DEVICE_DESC_LENGTH);
81 *host_endian = 0;
82 return LIBUSB_SUCCESS;
83 }
84
85 static int
haiku_get_active_config_descriptor(struct libusb_device * device,unsigned char * buffer,size_t len,int * host_endian)86 haiku_get_active_config_descriptor(struct libusb_device *device, unsigned char *buffer, size_t len, int *host_endian)
87 {
88 USBDevice *dev = *((USBDevice **)device->os_priv);
89 return haiku_get_config_descriptor(device, dev->ActiveConfigurationIndex(), buffer, len, host_endian);
90 }
91
92 static int
haiku_get_config_descriptor(struct libusb_device * device,uint8_t config_index,unsigned char * buffer,size_t len,int * host_endian)93 haiku_get_config_descriptor(struct libusb_device *device, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian)
94 {
95 USBDevice *dev = *((USBDevice **)device->os_priv);
96 const usb_configuration_descriptor *config = dev->ConfigurationDescriptor(config_index);
97 if (config == NULL) {
98 usbi_err(DEVICE_CTX(device), "failed getting configuration descriptor");
99 return LIBUSB_ERROR_INVALID_PARAM;
100 }
101 if (len > config->total_length) {
102 len = config->total_length;
103 }
104 memcpy(buffer, config, len);
105 *host_endian = 0;
106 return len;
107 }
108
109 static int
haiku_set_configuration(struct libusb_device_handle * dev_handle,int config)110 haiku_set_configuration(struct libusb_device_handle *dev_handle, int config)
111 {
112 USBDeviceHandle *handle= *((USBDeviceHandle **)dev_handle->os_priv);
113 return handle->SetConfiguration(config);
114 }
115
116 static int
haiku_claim_interface(struct libusb_device_handle * dev_handle,int interface_number)117 haiku_claim_interface(struct libusb_device_handle *dev_handle, int interface_number)
118 {
119 USBDeviceHandle *handle = *((USBDeviceHandle **)dev_handle->os_priv);
120 return handle->ClaimInterface(interface_number);
121 }
122
123 static int
haiku_set_altsetting(struct libusb_device_handle * dev_handle,int interface_number,int altsetting)124 haiku_set_altsetting(struct libusb_device_handle *dev_handle, int interface_number, int altsetting)
125 {
126 USBDeviceHandle *handle = *((USBDeviceHandle **)dev_handle->os_priv);
127 return handle->SetAltSetting(interface_number, altsetting);
128 }
129
130 static int
haiku_release_interface(struct libusb_device_handle * dev_handle,int interface_number)131 haiku_release_interface(struct libusb_device_handle *dev_handle, int interface_number)
132 {
133 USBDeviceHandle *handle = *((USBDeviceHandle **)dev_handle->os_priv);
134 haiku_set_altsetting(dev_handle,interface_number, 0);
135 return handle->ReleaseInterface(interface_number);
136 }
137
138 static int
haiku_submit_transfer(struct usbi_transfer * itransfer)139 haiku_submit_transfer(struct usbi_transfer *itransfer)
140 {
141 struct libusb_transfer *fLibusbTransfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
142 USBDeviceHandle *fDeviceHandle = *((USBDeviceHandle **)fLibusbTransfer->dev_handle->os_priv);
143 return fDeviceHandle->SubmitTransfer(itransfer);
144 }
145
146 static int
haiku_cancel_transfer(struct usbi_transfer * itransfer)147 haiku_cancel_transfer(struct usbi_transfer *itransfer)
148 {
149 struct libusb_transfer *fLibusbTransfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
150 USBDeviceHandle *fDeviceHandle = *((USBDeviceHandle **)fLibusbTransfer->dev_handle->os_priv);
151 return fDeviceHandle->CancelTransfer(*((USBTransfer **)usbi_transfer_get_os_priv(itransfer)));
152 }
153
154 static void
haiku_clear_transfer_priv(struct usbi_transfer * itransfer)155 haiku_clear_transfer_priv(struct usbi_transfer *itransfer)
156 {
157 USBTransfer *transfer = *((USBTransfer **)usbi_transfer_get_os_priv(itransfer));
158 delete transfer;
159 *((USBTransfer **)usbi_transfer_get_os_priv(itransfer)) = NULL;
160 }
161
162 static int
haiku_handle_transfer_completion(struct usbi_transfer * itransfer)163 haiku_handle_transfer_completion(struct usbi_transfer *itransfer)
164 {
165 USBTransfer *transfer = *((USBTransfer **)usbi_transfer_get_os_priv(itransfer));
166
167 usbi_mutex_lock(&itransfer->lock);
168 if (transfer->IsCancelled()) {
169 delete transfer;
170 *((USBTransfer **)usbi_transfer_get_os_priv(itransfer)) = NULL;
171 usbi_mutex_unlock(&itransfer->lock);
172 if (itransfer->transferred < 0)
173 itransfer->transferred = 0;
174 return usbi_handle_transfer_cancellation(itransfer);
175 }
176 libusb_transfer_status status = LIBUSB_TRANSFER_COMPLETED;
177 if (itransfer->transferred < 0) {
178 usbi_err(ITRANSFER_CTX(itransfer), "error in transfer");
179 status = LIBUSB_TRANSFER_ERROR;
180 itransfer->transferred = 0;
181 }
182 delete transfer;
183 *((USBTransfer **)usbi_transfer_get_os_priv(itransfer)) = NULL;
184 usbi_mutex_unlock(&itransfer->lock);
185 return usbi_handle_transfer_completion(itransfer, status);
186 }
187
188 static int
haiku_clock_gettime(int clkid,struct timespec * tp)189 haiku_clock_gettime(int clkid, struct timespec *tp)
190 {
191 if (clkid == USBI_CLOCK_REALTIME)
192 return clock_gettime(CLOCK_REALTIME, tp);
193 if (clkid == USBI_CLOCK_MONOTONIC)
194 return clock_gettime(CLOCK_MONOTONIC, tp);
195 return LIBUSB_ERROR_INVALID_PARAM;
196 }
197
198 const struct usbi_os_backend usbi_backend = {
199 .name = "Haiku usbfs",
200 .caps = 0,
201 .init = haiku_init,
202 .exit = haiku_exit,
203 .set_option = NULL,
204 .get_device_list = NULL,
205 .hotplug_poll = NULL,
206 .wrap_sys_device = NULL,
207 .open = haiku_open,
208 .close = haiku_close,
209 .get_device_descriptor = haiku_get_device_descriptor,
210 .get_active_config_descriptor = haiku_get_active_config_descriptor,
211 .get_config_descriptor = haiku_get_config_descriptor,
212 .get_config_descriptor_by_value = NULL,
213
214
215 .get_configuration = NULL,
216 .set_configuration = haiku_set_configuration,
217 .claim_interface = haiku_claim_interface,
218 .release_interface = haiku_release_interface,
219
220 .set_interface_altsetting = haiku_set_altsetting,
221 .clear_halt = NULL,
222 .reset_device = NULL,
223
224 .alloc_streams = NULL,
225 .free_streams = NULL,
226
227 .dev_mem_alloc = NULL,
228 .dev_mem_free = NULL,
229
230 .kernel_driver_active = NULL,
231 .detach_kernel_driver = NULL,
232 .attach_kernel_driver = NULL,
233
234 .destroy_device = NULL,
235
236 .submit_transfer = haiku_submit_transfer,
237 .cancel_transfer = haiku_cancel_transfer,
238 .clear_transfer_priv = haiku_clear_transfer_priv,
239
240 .handle_events = NULL,
241 .handle_transfer_completion = haiku_handle_transfer_completion,
242
243 .clock_gettime = haiku_clock_gettime,
244
245 #ifdef USBI_TIMERFD_AVAILABLE
246 .get_timerfd_clockid = NULL,
247 #endif
248
249 .context_priv_size = 0,
250 .device_priv_size = sizeof(USBDevice *),
251 .device_handle_priv_size = sizeof(USBDeviceHandle *),
252 .transfer_priv_size = sizeof(USBTransfer *),
253 };
254