Changeset 2e85b3c in mainline for uspace/lib/usb


Ignore:
Timestamp:
2011-02-16T18:22:43Z (15 years ago)
Author:
Jan Vesely <jano.vesely@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
f4c87aa9
Parents:
600733e (diff), ec59693 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.
Message:

Development branch

Location:
uspace/lib/usb
Files:
5 added
6 deleted
12 edited

Legend:

Unmodified
Added
Removed

  • uspace/lib/usb/Makefile

    r600733e r2e85b3c  
    3939        src/drvpsync.c \
    4040        src/dump.c \
    41         src/hcdhubd.c \
    42         src/hcdrv.c \
    4341        src/hidparser.c \
    44         src/localdrv.c \
     42        src/hub.c \
    4543        src/pipes.c \
    4644        src/pipesinit.c \
     45        src/pipesio.c \
    4746        src/recognise.c \
    48         src/remotedrv.c \
    4947        src/request.c \
    5048        src/usb.c \
     49        src/usbdevice.c \
    5150        src/usbdrvreq.c \
    5251        src/usbdrv.c \

  • uspace/lib/usb/include/usb/addrkeep.h

    • Property mode changed from 120000 to 100644
    r600733e r2e85b3c  
    1 hcd.h
     1/*
     2 * Copyright (c) 2010 Vojtech Horky
     3 * All rights reserved.
     4 *
     5 * Redistribution and use in source and binary forms, with or without
     6 * modification, are permitted provided that the following conditions
     7 * are met:
     8 *
     9 * - Redistributions of source code must retain the above copyright
     10 *   notice, this list of conditions and the following disclaimer.
     11 * - Redistributions in binary form must reproduce the above copyright
     12 *   notice, this list of conditions and the following disclaimer in the
     13 *   documentation and/or other materials provided with the distribution.
     14 * - The name of the author may not be used to endorse or promote products
     15 *   derived from this software without specific prior written permission.
     16 *
     17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 */
     28
     29/** @addtogroup libusb
     30 * @{
     31 */
     32/** @file
     33 * USB address keeping for host controller drivers.
     34 */
     35#ifndef LIBUSB_ADDRKEEP_H_
     36#define LIBUSB_ADDRKEEP_H_
     37
     38#include <usb/usb.h>
     39#include <fibril_synch.h>
     40#include <devman.h>
     41
     42/** Info about used address. */
     43typedef struct {
     44        /** Linked list member. */
     45        link_t link;
     46        /** Address. */
     47        usb_address_t address;
     48        /** Corresponding devman handle. */
     49        devman_handle_t devman_handle;
     50} usb_address_keeping_used_t;
     51
     52/** Structure for keeping track of free and used USB addresses. */
     53typedef struct {
     54        /** Head of list of used addresses. */
     55        link_t used_addresses;
     56        /** Upper bound for USB addresses. */
     57        usb_address_t max_address;
     58        /** Mutex protecting used address. */
     59        fibril_mutex_t used_addresses_guard;
     60        /** Condition variable for used addresses. */
     61        fibril_condvar_t used_addresses_condvar;
     62
     63        /** Condition variable mutex for default address. */
     64        fibril_mutex_t default_condvar_guard;
     65        /** Condition variable for default address. */
     66        fibril_condvar_t default_condvar;
     67        /** Whether is default address available. */
     68        bool default_available;
     69} usb_address_keeping_t;
     70
     71void usb_address_keeping_init(usb_address_keeping_t *, usb_address_t);
     72
     73void usb_address_keeping_reserve_default(usb_address_keeping_t *);
     74void usb_address_keeping_release_default(usb_address_keeping_t *);
     75
     76usb_address_t usb_address_keeping_request(usb_address_keeping_t *);
     77int usb_address_keeping_release(usb_address_keeping_t *, usb_address_t);
     78void usb_address_keeping_devman_bind(usb_address_keeping_t *, usb_address_t,
     79    devman_handle_t);
     80usb_address_t usb_address_keeping_find(usb_address_keeping_t *,
     81    devman_handle_t);
     82
     83#endif
     84/**
     85 * @}
     86 */

  • uspace/lib/usb/include/usb/classes/hub.h

    r600733e r2e85b3c  
    3737
    3838#include <sys/types.h>
    39 #include <usb/hcdhubd.h>
    40 
    4139
    4240/** Hub class feature selector.
    … …  
    8078    /**
    8179            D1...D0: Logical Power Switching Mode
    82             00: Ganged power switching (all ports’ power at
     80            00: Ganged power switching (all ports power at
    8381            once)
    8482            01: Individual port power switching
    … …  
    9189            00: Global Over-current Protection. The hub
    9290            reports over-current as a summation of all
    93             ports’ current draw, without a breakdown of
     91            ports current draw, without a breakdown of
    9492            individual port over-current status.
    9593            01: Individual Port Over-current Protection. The

  • uspace/lib/usb/include/usb/pipes.h

    r600733e r2e85b3c  
    3131 */
    3232/** @file
    33  * Communication between device drivers and host controller driver.
     33 * USB pipes representation.
    3434 */
    3535#ifndef LIBUSB_PIPES_H_
    … …  
    3838#include <sys/types.h>
    3939#include <usb/usb.h>
     40#include <usb/usbdevice.h>
    4041#include <usb/descriptor.h>
    4142#include <ipc/devman.h>
    … …  
    114115} usb_endpoint_mapping_t;
    115116
     117int usb_device_connection_initialize_on_default_address(
     118    usb_device_connection_t *, usb_hc_connection_t *);
    116119int usb_device_connection_initialize_from_device(usb_device_connection_t *,
    117120    device_t *);
    … …  
    139142    void *, size_t);
    140143
    141 
    142 
    143 int usb_endpoint_pipe_async_read(usb_endpoint_pipe_t *, void *, size_t,
    144     size_t *, usb_handle_t *);
    145 int usb_endpoint_pipe_async_write(usb_endpoint_pipe_t *, void *, size_t,
    146     usb_handle_t *);
    147 
    148 int usb_endpoint_pipe_async_control_read(usb_endpoint_pipe_t *, void *, size_t,
    149     void *, size_t, size_t *, usb_handle_t *);
    150 int usb_endpoint_pipe_async_control_write(usb_endpoint_pipe_t *, void *, size_t,
    151     void *, size_t, usb_handle_t *);
    152 
    153 int usb_endpoint_pipe_wait_for(usb_endpoint_pipe_t *, usb_handle_t);
    154 
    155144#endif
    156145/**

  • uspace/lib/usb/include/usb/recognise.h

    r600733e r2e85b3c  
    3939#include <usb/usb.h>
    4040#include <usb/pipes.h>
     41#include <ipc/devman.h>
    4142
    4243int usb_device_create_match_ids(usb_endpoint_pipe_t *, match_id_list_t *);

  • uspace/lib/usb/include/usb/usb.h

    r600733e r2e85b3c  
    8383} usb_request_recipient_t;
    8484
    85 /** USB transaction outcome. */
    86 typedef enum {
    87         USB_OUTCOME_OK,
    88         USB_OUTCOME_CRCERROR,
    89         USB_OUTCOME_BABBLE
    90 } usb_transaction_outcome_t;
    91 
    92 const char * usb_str_transaction_outcome(usb_transaction_outcome_t o);
    93 
    9485/** USB address type.
    9586 * Negative values could be used to indicate error.

  • uspace/lib/usb/src/addrkeep.c

    r600733e r2e85b3c  
    3333 * @brief Address keeping.
    3434 */
    35 #include <usb/hcd.h>
     35#include <usb/addrkeep.h>
    3636#include <errno.h>
    3737#include <assert.h>

  • uspace/lib/usb/src/dump.c

    r600733e r2e85b3c  
    147147        PRINTLINE("bDeviceProtocol = 0x%02x", d->device_protocol);
    148148        PRINTLINE("bMaxPacketSize0 = %d", d->max_packet_size);
    149         PRINTLINE("idVendor = %d", d->vendor_id);
    150         PRINTLINE("idProduct = %d", d->product_id);
     149        PRINTLINE("idVendor = 0x%04x", d->vendor_id);
     150        PRINTLINE("idProduct = 0x%04x", d->product_id);
    151151        PRINTLINE("bcdDevice = %d", d->device_version);
    152152        PRINTLINE("iManufacturer = %d", d->str_manufacturer);

  • uspace/lib/usb/src/pipes.c

    r600733e r2e85b3c  
    3131 */
    3232/** @file
    33  * Communication between device drivers and host controller driver.
    34  *
    35  * Note on synchronousness of the operations: there is ABSOLUTELY NO
    36  * guarantee that a call to particular function will not trigger a fibril
    37  * switch.
    38  * The initialization functions may actually involve contacting some other
    39  * task, starting/ending a session might involve asynchronous IPC and since
    40  * the transfer functions uses IPC, asynchronous nature of them is obvious.
    41  * The pseudo synchronous versions for the transfers internally call the
    42  * asynchronous ones and so fibril switch is possible in them as well.
     33 * USB endpoint pipes miscellaneous functions.
    4334 */
    4435#include <usb/usb.h>
    … …  
    4738#include <assert.h>
    4839#include <usb/usbdrv.h>
    49 
    50 #define _PREPARE_TARGET(varname, pipe) \
    51         usb_target_t varname = { \
    52                 .address = (pipe)->wire->address, \
    53                 .endpoint = (pipe)->endpoint_no \
    54         }
    5540
    5641/** Initialize connection to USB device.
    … …  
    117102}
    118103
    119 /** Initialize USB endpoint pipe.
     104/** Initialize connection to USB device on default address.
    120105 *
    121  * @param pipe Endpoint pipe to be initialized.
    122  * @param connection Connection to the USB device backing this pipe (the wire).
    123  * @param endpoint_no Endpoint number (in USB 1.1 in range 0 to 15).
    124  * @param transfer_type Transfer type (e.g. interrupt or bulk).
    125  * @param max_packet_size Maximum packet size in bytes.
    126  * @param direction Endpoint direction (in/out).
     106 * @param dev_connection Device connection structure to be initialized.
     107 * @param hc_connection Initialized connection to host controller.
    127108 * @return Error code.
    128109 */
    129 int usb_endpoint_pipe_initialize(usb_endpoint_pipe_t *pipe,
    130     usb_device_connection_t *connection, usb_endpoint_t endpoint_no,
    131     usb_transfer_type_t transfer_type, size_t max_packet_size,
    132     usb_direction_t direction)
     110int usb_device_connection_initialize_on_default_address(
     111    usb_device_connection_t *dev_connection,
     112    usb_hc_connection_t *hc_connection)
    133113{
    134         assert(pipe);
    135         assert(connection);
     114        assert(dev_connection);
    136115
    137         pipe->wire = connection;
    138         pipe->hc_phone = -1;
    139         pipe->endpoint_no = endpoint_no;
    140         pipe->transfer_type = transfer_type;
    141         pipe->max_packet_size = max_packet_size;
    142         pipe->direction = direction;
     116        if (hc_connection == NULL) {
     117                return EBADMEM;
     118        }
    143119
    144         return EOK;
    145 }
    146 
    147 
    148 /** Initialize USB endpoint pipe as the default zero control pipe.
    149  *
    150  * @param pipe Endpoint pipe to be initialized.
    151  * @param connection Connection to the USB device backing this pipe (the wire).
    152  * @return Error code.
    153  */
    154 int usb_endpoint_pipe_initialize_default_control(usb_endpoint_pipe_t *pipe,
    155     usb_device_connection_t *connection)
    156 {
    157         assert(pipe);
    158         assert(connection);
    159 
    160         int rc = usb_endpoint_pipe_initialize(pipe, connection,
    161             0, USB_TRANSFER_CONTROL, 8, USB_DIRECTION_BOTH);
    162 
    163         return rc;
     120        return usb_device_connection_initialize(dev_connection,
     121            hc_connection->hc_handle, (usb_address_t) 0);
    164122}
    165123
    … …  
    224182}
    225183
    226 
    227 /** Request a read (in) transfer on an endpoint pipe.
    228  *
    229  * @param[in] pipe Pipe used for the transfer.
    230  * @param[out] buffer Buffer where to store the data.
    231  * @param[in] size Size of the buffer (in bytes).
    232  * @param[out] size_transfered Number of bytes that were actually transfered.
    233  * @return Error code.
    234  */
    235 int usb_endpoint_pipe_read(usb_endpoint_pipe_t *pipe,
    236     void *buffer, size_t size, size_t *size_transfered)
    237 {
    238         assert(pipe);
    239 
    240         int rc;
    241         usb_handle_t handle;
    242 
    243         rc = usb_endpoint_pipe_async_read(pipe, buffer, size, size_transfered,
    244             &handle);
    245         if (rc != EOK) {
    246                 return rc;
    247         }
    248 
    249         rc = usb_endpoint_pipe_wait_for(pipe, handle);
    250         return rc;
    251 }
    252 
    253 /** Request a write (out) transfer on an endpoint pipe.
    254  *
    255  * @param[in] pipe Pipe used for the transfer.
    256  * @param[in] buffer Buffer with data to transfer.
    257  * @param[in] size Size of the buffer (in bytes).
    258  * @return Error code.
    259  */
    260 int usb_endpoint_pipe_write(usb_endpoint_pipe_t *pipe,
    261     void *buffer, size_t size)
    262 {
    263         assert(pipe);
    264 
    265         int rc;
    266         usb_handle_t handle;
    267 
    268         rc = usb_endpoint_pipe_async_write(pipe, buffer, size, &handle);
    269         if (rc != EOK) {
    270                 return rc;
    271         }
    272 
    273         rc = usb_endpoint_pipe_wait_for(pipe, handle);
    274         return rc;
    275 }
    276 
    277 
    278 /** Request a control read transfer on an endpoint pipe.
    279  *
    280  * This function encapsulates all three stages of a control transfer.
    281  *
    282  * @param[in] pipe Pipe used for the transfer.
    283  * @param[in] setup_buffer Buffer with the setup packet.
    284  * @param[in] setup_buffer_size Size of the setup packet (in bytes).
    285  * @param[out] data_buffer Buffer for incoming data.
    286  * @param[in] data_buffer_size Size of the buffer for incoming data (in bytes).
    287  * @param[out] data_transfered_size Number of bytes that were actually
    288  *                                  transfered during the DATA stage.
    289  * @return Error code.
    290  */
    291 int usb_endpoint_pipe_control_read(usb_endpoint_pipe_t *pipe,
    292     void *setup_buffer, size_t setup_buffer_size,
    293     void *data_buffer, size_t data_buffer_size, size_t *data_transfered_size)
    294 {
    295         assert(pipe);
    296 
    297         int rc;
    298         usb_handle_t handle;
    299 
    300         rc = usb_endpoint_pipe_async_control_read(pipe,
    301             setup_buffer, setup_buffer_size,
    302             data_buffer, data_buffer_size, data_transfered_size,
    303             &handle);
    304         if (rc != EOK) {
    305                 return rc;
    306         }
    307 
    308         rc = usb_endpoint_pipe_wait_for(pipe, handle);
    309         return rc;
    310 }
    311 
    312 
    313 /** Request a control write transfer on an endpoint pipe.
    314  *
    315  * This function encapsulates all three stages of a control transfer.
    316  *
    317  * @param[in] pipe Pipe used for the transfer.
    318  * @param[in] setup_buffer Buffer with the setup packet.
    319  * @param[in] setup_buffer_size Size of the setup packet (in bytes).
    320  * @param[in] data_buffer Buffer with data to be sent.
    321  * @param[in] data_buffer_size Size of the buffer with outgoing data (in bytes).
    322  * @return Error code.
    323  */
    324 int usb_endpoint_pipe_control_write(usb_endpoint_pipe_t *pipe,
    325     void *setup_buffer, size_t setup_buffer_size,
    326     void *data_buffer, size_t data_buffer_size)
    327 {
    328         assert(pipe);
    329 
    330         int rc;
    331         usb_handle_t handle;
    332 
    333         rc = usb_endpoint_pipe_async_control_write(pipe,
    334             setup_buffer, setup_buffer_size,
    335             data_buffer, data_buffer_size,
    336             &handle);
    337         if (rc != EOK) {
    338                 return rc;
    339         }
    340 
    341         rc = usb_endpoint_pipe_wait_for(pipe, handle);
    342         return rc;
    343 }
    344 
    345 
    346 /** Request a read (in) transfer on an endpoint pipe (asynchronous version).
    347  *
    348  * @param[in] pipe Pipe used for the transfer.
    349  * @param[out] buffer Buffer where to store the data.
    350  * @param[in] size Size of the buffer (in bytes).
    351  * @param[out] size_transfered Number of bytes that were actually transfered.
    352  * @param[out] handle Handle of the transfer.
    353  * @return Error code.
    354  */
    355 int usb_endpoint_pipe_async_read(usb_endpoint_pipe_t *pipe,
    356     void *buffer, size_t size, size_t *size_transfered,
    357     usb_handle_t *handle)
    358 {
    359         assert(pipe);
    360 
    361         if (pipe->hc_phone < 0) {
    362                 return EBADF;
    363         }
    364 
    365         if (pipe->direction != USB_DIRECTION_IN) {
    366                 return EBADF;
    367         }
    368 
    369         int rc;
    370         _PREPARE_TARGET(target, pipe);
    371 
    372         switch (pipe->transfer_type) {
    373                 case USB_TRANSFER_INTERRUPT:
    374                         rc = usb_drv_async_interrupt_in(pipe->hc_phone, target,
    375                             buffer, size, size_transfered, handle);
    376                         break;
    377                 case USB_TRANSFER_CONTROL:
    378                         rc = EBADF;
    379                         break;
    380                 default:
    381                         rc = ENOTSUP;
    382                         break;
    383         }
    384 
    385         return rc;
    386 }
    387 
    388 
    389 /** Request a write (out) transfer on an endpoint pipe (asynchronous version).
    390  *
    391  * @param[in] pipe Pipe used for the transfer.
    392  * @param[in] buffer Buffer with data to transfer.
    393  * @param[in] size Size of the buffer (in bytes).
    394  * @param[out] handle Handle of the transfer.
    395  * @return Error code.
    396  */
    397 int usb_endpoint_pipe_async_write(usb_endpoint_pipe_t *pipe,
    398     void *buffer, size_t size,
    399     usb_handle_t *handle)
    400 {
    401         assert(pipe);
    402 
    403         if (pipe->hc_phone < 0) {
    404                 return EBADF;
    405         }
    406 
    407         if (pipe->direction != USB_DIRECTION_OUT) {
    408                 return EBADF;
    409         }
    410 
    411         int rc;
    412         _PREPARE_TARGET(target, pipe);
    413 
    414         switch (pipe->transfer_type) {
    415                 case USB_TRANSFER_INTERRUPT:
    416                         rc = usb_drv_async_interrupt_out(pipe->hc_phone, target,
    417                             buffer, size, handle);
    418                         break;
    419                 case USB_TRANSFER_CONTROL:
    420                         rc = EBADF;
    421                         break;
    422                 default:
    423                         rc = ENOTSUP;
    424                         break;
    425         }
    426 
    427         return rc;
    428 }
    429 
    430 
    431 /** Request a control read transfer on an endpoint pipe (asynchronous version).
    432  *
    433  * This function encapsulates all three stages of a control transfer.
    434  *
    435  * @param[in] pipe Pipe used for the transfer.
    436  * @param[in] setup_buffer Buffer with the setup packet.
    437  * @param[in] setup_buffer_size Size of the setup packet (in bytes).
    438  * @param[out] data_buffer Buffer for incoming data.
    439  * @param[in] data_buffer_size Size of the buffer for incoming data (in bytes).
    440  * @param[out] data_transfered_size Number of bytes that were actually
    441  *                                  transfered during the DATA stage.
    442  * @param[out] handle Handle of the transfer.
    443  * @return Error code.
    444  */
    445 int usb_endpoint_pipe_async_control_read(usb_endpoint_pipe_t *pipe,
    446     void *setup_buffer, size_t setup_buffer_size,
    447     void *data_buffer, size_t data_buffer_size, size_t *data_transfered_size,
    448     usb_handle_t *handle)
    449 {
    450         assert(pipe);
    451 
    452         if (pipe->hc_phone < 0) {
    453                 return EBADF;
    454         }
    455 
    456         if ((pipe->direction != USB_DIRECTION_BOTH)
    457             || (pipe->transfer_type != USB_TRANSFER_CONTROL)) {
    458                 return EBADF;
    459         }
    460 
    461         int rc;
    462         _PREPARE_TARGET(target, pipe);
    463 
    464         rc = usb_drv_async_control_read(pipe->hc_phone, target,
    465             setup_buffer, setup_buffer_size,
    466             data_buffer, data_buffer_size, data_transfered_size,
    467             handle);
    468 
    469         return rc;
    470 }
    471 
    472 
    473 /** Request a control write transfer on an endpoint pipe (asynchronous version).
    474  *
    475  * This function encapsulates all three stages of a control transfer.
    476  *
    477  * @param[in] pipe Pipe used for the transfer.
    478  * @param[in] setup_buffer Buffer with the setup packet.
    479  * @param[in] setup_buffer_size Size of the setup packet (in bytes).
    480  * @param[in] data_buffer Buffer with data to be sent.
    481  * @param[in] data_buffer_size Size of the buffer with outgoing data (in bytes).
    482  * @param[out] handle Handle of the transfer.
    483  * @return Error code.
    484  */
    485 int usb_endpoint_pipe_async_control_write(usb_endpoint_pipe_t *pipe,
    486     void *setup_buffer, size_t setup_buffer_size,
    487     void *data_buffer, size_t data_buffer_size,
    488     usb_handle_t *handle)
    489 {
    490         assert(pipe);
    491 
    492         if (pipe->hc_phone < 0) {
    493                 return EBADF;
    494         }
    495 
    496         if ((pipe->direction != USB_DIRECTION_BOTH)
    497             || (pipe->transfer_type != USB_TRANSFER_CONTROL)) {
    498                 return EBADF;
    499         }
    500 
    501         int rc;
    502         _PREPARE_TARGET(target, pipe);
    503 
    504         rc = usb_drv_async_control_write(pipe->hc_phone, target,
    505             setup_buffer, setup_buffer_size,
    506             data_buffer, data_buffer_size,
    507             handle);
    508 
    509         return rc;
    510 }
    511 
    512 /** Wait for transfer completion.
    513  *
    514  * The function blocks the caller fibril until the transfer associated
    515  * with given @p handle is completed.
    516  *
    517  * @param[in] pipe Pipe the transfer executed on.
    518  * @param[in] handle Transfer handle.
    519  * @return Error code.
    520  */
    521 int usb_endpoint_pipe_wait_for(usb_endpoint_pipe_t *pipe, usb_handle_t handle)
    522 {
    523         return usb_drv_async_wait_for(handle);
    524 }
    525 
    526 
    527184/**
    528185 * @}

  • uspace/lib/usb/src/pipesinit.c

    r600733e r2e85b3c  
    320320}
    321321
     322/** Initialize USB endpoint pipe.
     323 *
     324 * @param pipe Endpoint pipe to be initialized.
     325 * @param connection Connection to the USB device backing this pipe (the wire).
     326 * @param endpoint_no Endpoint number (in USB 1.1 in range 0 to 15).
     327 * @param transfer_type Transfer type (e.g. interrupt or bulk).
     328 * @param max_packet_size Maximum packet size in bytes.
     329 * @param direction Endpoint direction (in/out).
     330 * @return Error code.
     331 */
     332int usb_endpoint_pipe_initialize(usb_endpoint_pipe_t *pipe,
     333    usb_device_connection_t *connection, usb_endpoint_t endpoint_no,
     334    usb_transfer_type_t transfer_type, size_t max_packet_size,
     335    usb_direction_t direction)
     336{
     337        assert(pipe);
     338        assert(connection);
     339
     340        pipe->wire = connection;
     341        pipe->hc_phone = -1;
     342        pipe->endpoint_no = endpoint_no;
     343        pipe->transfer_type = transfer_type;
     344        pipe->max_packet_size = max_packet_size;
     345        pipe->direction = direction;
     346
     347        return EOK;
     348}
     349
     350
     351/** Initialize USB endpoint pipe as the default zero control pipe.
     352 *
     353 * @param pipe Endpoint pipe to be initialized.
     354 * @param connection Connection to the USB device backing this pipe (the wire).
     355 * @return Error code.
     356 */
     357int usb_endpoint_pipe_initialize_default_control(usb_endpoint_pipe_t *pipe,
     358    usb_device_connection_t *connection)
     359{
     360        assert(pipe);
     361        assert(connection);
     362
     363        int rc = usb_endpoint_pipe_initialize(pipe, connection,
     364            0, USB_TRANSFER_CONTROL, 8, USB_DIRECTION_BOTH);
     365
     366        return rc;
     367}
     368
    322369/**
    323370 * @}

  • uspace/lib/usb/src/usb.c

    r600733e r2e85b3c  
    5454}
    5555
    56 /** String representation of USB transaction outcome. */
    57 const char * usb_str_transaction_outcome(usb_transaction_outcome_t o)
    58 {
    59         switch (o) {
    60                 case USB_OUTCOME_OK:
    61                         return "ok";
    62                 case USB_OUTCOME_CRCERROR:
    63                         return "CRC error";
    64                 case USB_OUTCOME_BABBLE:
    65                         return "babble";
    66                 default:
    67                         return "unknown";
    68         }
    69 }
    70 
    71 
    7256/**
    7357 * @}

  • uspace/lib/usb/src/usbdrv.c

    r600733e r2e85b3c  
    464464        assert(setup_packet != NULL);
    465465        assert(setup_packet_size > 0);
    466         assert(buffer != NULL);
    467         assert(buffer_size > 0);
     466        assert(((buffer != NULL) && (buffer_size > 0))
     467            || ((buffer == NULL) && (buffer_size == 0)));
    468468        assert(handle != NULL);
    469469
    … …  
    494494        }
    495495
    496         rc = async_data_write_start(phone, buffer, buffer_size);
    497         if (rc != EOK) {
    498                 async_wait_for(transfer->request, NULL);
    499                 return rc;
     496        if (buffer_size > 0) {
     497                rc = async_data_write_start(phone, buffer, buffer_size);
     498                if (rc != EOK) {
     499                        async_wait_for(transfer->request, NULL);
     500                        return rc;
     501                }
    500502        }
    501503
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