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Add usb_reg_map.h and usb_reg_map.c.

usb_reg_map.h contains the usual register map and register bit
definitions that libmaple convention requires.  It also contains a
variety of structs and convenience functions for accessing and
manipulating endpoint registers, BTABLE entries, and PMA buffers.

We'll be moving towards usb_reg_map.h instead of usb_lib/usb_regs.h.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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1 parent 125f3d9 commit ae3d80d796536f88bb1462326abb9271722215a0 Marti Bolivar committed Sep 23, 2011
Showing with 513 additions and 0 deletions.
  1. +1 −0 libmaple/rules.mk
  2. +79 −0 libmaple/usb/usb_reg_map.c
  3. +433 −0 libmaple/usb/usb_reg_map.h
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@@ -34,6 +34,7 @@ cSRCS_$(d) := adc.c \
usb/descriptors.c \
usb/usb.c \
usb/usb_callbacks.c \
+ usb/usb_reg_map.c \
usb/usb_lib/usb_core.c \
usb/usb_lib/usb_init.c \
usb/usb_lib/usb_int.c \
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@@ -0,0 +1,79 @@
+/******************************************************************************
+ * 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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