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/******************************************************************************
* The MIT License
*
* Copyright (c) 2011 LeafLabs, LLC.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*****************************************************************************/
#include "usb_reg_map.h"
/* TODO these could use some improvement; they're fairly
* straightforward ports of the analogous ST code. The PMA blit
* routines in particular are obvious targets for performance
* measurement and tuning. */
void usb_copy_to_pma(const uint8 *buf, uint16 len, uint16 pma_offset) {
uint16 *dst = (uint16*)usb_pma_ptr(pma_offset);
uint16 n = len >> 1;
uint16 i;
for (i = 0; i < n; i++) {
*dst = (uint16)(*buf) | *(buf + 1) << 8;
buf += 2;
dst += 2;
}
if (len & 1) {
*dst = *buf;
}
}
void usb_copy_from_pma(uint8 *buf, uint16 len, uint16 pma_offset) {
uint32 *src = (uint32*)usb_pma_ptr(pma_offset);
uint16 *dst = (uint16*)buf;
uint16 n = len >> 1;
uint16 i;
for (i = 0; i < n; i++) {
*dst++ = *src++;
}
if (len & 1) {
*dst = *src & 0xFF;
}
}
void usb_set_ep_rx_count(uint8 ep, uint16 count) {
uint32 *rxc = usb_ep_rx_count_ptr(ep);
uint16 nblocks;
if (count > 62) {
/* use 32-byte memory block size */
nblocks = count >> 5;
if ((count & 0x1F) == 0) {
nblocks--;
}
*rxc = (nblocks << 10) | 0x8000;
} else {
/* use 2-byte memory block size */
nblocks = count >> 1;
if ((count & 0x1) != 0) {
nblocks++;
}
*rxc = nblocks << 10;
}
}
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