forked from len0rd/rockbox
c17d30f204
The protocol has evolved a lot during the 2.x.y lifetime, bringing more features which later got unused. This commit removes all the unused stuff and simplifies everything: - drop the feature mask: everything is mandatory or stalled on error - remove the info request and put all static information in standard USB descriptors which are part of the configuration descriptor (and can be retrieved using the standard GetDescriptor request). - remove the USB interface, we had only one anyway - remove all endpoint descriptors - remove the exit/atexit stuff, it never worked as intended anyway - update the hwstub library and make it able to handle any device - update the tools (mostly renaming and removing of code) Change-Id: I1872bba7f4177fc3891180e8f944aab88f5bde31
114 lines
3.6 KiB
C
114 lines
3.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2012 by Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "hwstub.h"
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#include <string.h>
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#include <stdlib.h>
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#ifndef MIN
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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struct hwstub_device_t
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{
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libusb_device_handle *handle;
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int intf;
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int bulk_in;
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int bulk_out;
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int int_in;
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};
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struct hwstub_device_t *hwstub_open(libusb_device_handle *handle)
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{
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struct hwstub_device_t *dev = malloc(sizeof(struct hwstub_device_t));
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memset(dev, 0, sizeof(struct hwstub_device_t));
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dev->handle = handle;
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libusb_device *mydev = libusb_get_device(dev->handle);
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int config_id;
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libusb_get_configuration(dev->handle, &config_id);
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struct libusb_device_descriptor dev_desc;
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libusb_get_device_descriptor(mydev, &dev_desc);
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if(dev_desc.bDeviceClass != HWSTUB_CLASS ||
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dev_desc.bDeviceSubClass != HWSTUB_SUBCLASS ||
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dev_desc.bDeviceProtocol != HWSTUB_PROTOCOL)
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goto Lerr;
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return dev;
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Lerr:
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free(dev);
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return NULL;
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}
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int hwstub_release(struct hwstub_device_t *dev)
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{
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free(dev);
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return 0;
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}
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int hwstub_get_desc(struct hwstub_device_t *dev, uint16_t desc, void *info, size_t sz)
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{
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return libusb_control_transfer(dev->handle,
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LIBUSB_REQUEST_TYPE_STANDARD | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_IN,
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LIBUSB_REQUEST_GET_DESCRIPTOR, desc << 8, 0, info, sz, 1000);
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}
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int hwstub_get_log(struct hwstub_device_t *dev, void *buf, size_t sz)
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{
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return libusb_control_transfer(dev->handle,
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LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_IN,
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HWSTUB_GET_LOG, 0, 0, buf, sz, 1000);
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}
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int hwstub_rw_mem(struct hwstub_device_t *dev, int read, uint32_t addr, void *buf, size_t sz)
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{
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size_t tot_sz = 0;
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while(sz)
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{
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uint16_t xfer = MIN(1 * 1024, sz);
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int ret = libusb_control_transfer(dev->handle,
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LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_DEVICE |
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(read ? LIBUSB_ENDPOINT_IN : LIBUSB_ENDPOINT_OUT),
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HWSTUB_RW_MEM, addr & 0xffff, addr >> 16, buf, xfer, 1000);
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if(ret != xfer)
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return ret;
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sz -= xfer;
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addr += xfer;
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buf += xfer;
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tot_sz += xfer;
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}
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return tot_sz;
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}
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int hwstub_call(struct hwstub_device_t *dev, uint32_t addr)
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{
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return libusb_control_transfer(dev->handle,
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LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_DEVICE |
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LIBUSB_ENDPOINT_OUT, HWSTUB_CALL, addr & 0xffff, addr >> 16, NULL, 0,
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1000);
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}
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int hwstub_jump(struct hwstub_device_t *dev, uint32_t addr)
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{
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return libusb_control_transfer(dev->handle,
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LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_DEVICE |
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LIBUSB_ENDPOINT_OUT, HWSTUB_JUMP, addr & 0xffff, addr >> 16, NULL, 0,
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1000);
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}
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