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 haiku_get_config_descriptor(struct libusb_device *, uint8_t,
  33     unsigned char *, size_t, int *);
  34
  35 static int
  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
  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
  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
  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
  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
  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
  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
 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         .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 };