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_init(struct libusb_context * ctx)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
haiku_exit(void)41 haiku_exit(void)
42 {
43 if (atomic_add(&gInitCount, -1) == 1)
44 gUsbRoster.Stop();
45 }
46
47 static int
haiku_open(struct libusb_device_handle * dev_handle)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
haiku_close(struct libusb_device_handle * dev_handle)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
haiku_get_device_descriptor(struct libusb_device * device,unsigned char * buffer,int * host_endian)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
haiku_get_active_config_descriptor(struct libusb_device * device,unsigned char * buffer,size_t len,int * host_endian)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
haiku_get_config_descriptor(struct libusb_device * device,uint8_t config_index,unsigned char * buffer,size_t len,int * host_endian)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
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 haiku_usb_raw_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 /*.device_priv_size =*/ sizeof(USBDevice *),
248 /*.device_handle_priv_size =*/ sizeof(USBDeviceHandle *),
249 /*.transfer_priv_size =*/ sizeof(USBTransfer *),
250 };
251