core: Add provisions for per-context private backend data
[platform/upstream/libusb.git] / libusb / os / haiku_usb_raw.cpp
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
33 haiku_init(struct libusb_context *ctx)
34 {
35         if (atomic_add(&gInitCount, 1) == 0)
36                 return gUsbRoster.Start();
37         return LIBUSB_SUCCESS;
38 }
39
40 static void
41 haiku_exit(void)
42 {
43         if (atomic_add(&gInitCount, -1) == 1)
44                 gUsbRoster.Stop();
45 }
46
47 static int
48 haiku_open(struct libusb_device_handle *dev_handle)
49 {
50         USBDevice *dev = *((USBDevice **)dev_handle->dev->os_priv);
51         USBDeviceHandle *handle = new(std::nothrow) USBDeviceHandle(dev);
52         if (handle == NULL)
53                 return LIBUSB_ERROR_NO_MEM;
54         if (handle->InitCheck() == false) {
55                 delete handle;
56                 return LIBUSB_ERROR_NO_DEVICE;
57         }
58         *((USBDeviceHandle **)dev_handle->os_priv) = handle;
59         return LIBUSB_SUCCESS;
60 }
61
62 static void
63 haiku_close(struct libusb_device_handle *dev_handle)
64 {
65         USBDeviceHandle *handle = *((USBDeviceHandle **)dev_handle->os_priv);
66         if (handle == NULL)
67                 return;
68         delete handle;
69         *((USBDeviceHandle **)dev_handle->os_priv) = NULL;
70 }
71
72 static int
73 haiku_get_device_descriptor(struct libusb_device *device, unsigned char *buffer, int *host_endian)
74 {
75         USBDevice *dev = *((USBDevice **)device->os_priv);
76         memcpy(buffer, dev->Descriptor(), DEVICE_DESC_LENGTH);
77         *host_endian = 0;
78         return LIBUSB_SUCCESS;
79 }
80
81 static int
82 haiku_get_active_config_descriptor(struct libusb_device *device, unsigned char *buffer, size_t len, int *host_endian)
83 {
84         USBDevice *dev = *((USBDevice **)device->os_priv);
85         const usb_configuration_descriptor *act_config = dev->ActiveConfiguration();
86         if (len > act_config->total_length)
87                 return LIBUSB_ERROR_OVERFLOW;
88         memcpy(buffer, act_config, len);
89         *host_endian = 0;
90         return LIBUSB_SUCCESS;
91 }
92
93 static int
94 haiku_get_config_descriptor(struct libusb_device *device, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian)
95 {
96         USBDevice *dev = *((USBDevice **)device->os_priv);
97         const usb_configuration_descriptor *config = dev->ConfigurationDescriptor(config_index);
98         if (config == NULL) {
99                 usbi_err(DEVICE_CTX(device), "failed getting configuration descriptor");
100                 return LIBUSB_ERROR_INVALID_PARAM;
101         }
102         if (len > config->total_length)
103                 len = config->total_length;
104         memcpy(buffer, config, len);
105         *host_endian = 0;
106         return len;
107 }
108
109 static int
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
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
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
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
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
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
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
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
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         /*.get_device_list =*/ NULL,
204         /*.hotplug_poll =*/ NULL,
205         /*.open =*/ haiku_open,
206         /*.close =*/ haiku_close,
207         /*.get_device_descriptor =*/ haiku_get_device_descriptor,
208         /*.get_active_config_descriptor =*/ haiku_get_active_config_descriptor,
209         /*.get_config_descriptor =*/ haiku_get_config_descriptor,
210         /*.get_config_descriptor_by_value =*/ NULL,
211
212
213         /*.get_configuration =*/ NULL,
214         /*.set_configuration =*/ haiku_set_configuration,
215         /*.claim_interface =*/ haiku_claim_interface,
216         /*.release_interface =*/ haiku_release_interface,
217
218         /*.set_interface_altsetting =*/ haiku_set_altsetting,
219         /*.clear_halt =*/ NULL,
220         /*.reset_device =*/ NULL,
221
222         /*.alloc_streams =*/ NULL,
223         /*.free_streams =*/ NULL,
224
225         /*.dev_mem_alloc =*/ NULL,
226         /*.dev_mem_free =*/ NULL,
227
228         /*.kernel_driver_active =*/ NULL,
229         /*.detach_kernel_driver =*/ NULL,
230         /*.attach_kernel_driver =*/ NULL,
231
232         /*.destroy_device =*/ NULL,
233
234         /*.submit_transfer =*/ haiku_submit_transfer,
235         /*.cancel_transfer =*/ haiku_cancel_transfer,
236         /*.clear_transfer_priv =*/ haiku_clear_transfer_priv,
237
238         /*.handle_events =*/ NULL,
239         /*.handle_transfer_completion =*/ haiku_handle_transfer_completion,
240
241         /*.clock_gettime =*/ haiku_clock_gettime,
242
243 #ifdef USBI_TIMERFD_AVAILABLE
244         /*.get_timerfd_clockid =*/ NULL,
245 #endif
246
247         /*.context_priv_size=*/ 0,
248         /*.device_priv_size =*/ sizeof(USBDevice *),
249         /*.device_handle_priv_size =*/ sizeof(USBDeviceHandle *),
250         /*.transfer_priv_size =*/ sizeof(USBTransfer *),
251 };