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 };