Merge pull request #19 from anarkiwi/rfill

Implement REU fill.

vap.c

@@ -61,7 +61,7 @@ enum ASID_CMD {
  ASID_CMD_COPY_RECT_BUFFER = 0x5a,
  ASID_CMD_REU_STASH_BUFFER = 0x5b,
  ASID_CMD_REU_FETCH_BUFFER = 0x5c,
- // TODO: REU fill (with fixed address control).
+ ASID_CMD_REU_FILL_BUFFER = 0x5d,
  // TODO: REU fetch to rectangle.
 };
 
@@ -296,14 +296,22 @@ void start_handle_addr_rect() {
  setasidstop();
 }
 
-void start_handle_reu() {
+inline void start_reu(uint8_t control) {
  datahandler = &handle_load;
  loadbuffer = REU_ADDR_BASE;
- REU_CONTROL = 0;
+ REU_CONTROL = control;
  *(uint16_t *)REU_HOST_BASE = (uint16_t)bufferaddr;
  setasidstop();
 }
 
+void start_handle_reu() {
+ start_reu(0);
+}
+
+void start_handle_reu_fill() {
+ start_reu(0x40); // REU address is fixed.
+}
+
 void start_handle_copy() {
  datahandler = &handle_load;
  loadbuffer = (unsigned char *)&copyconfig;
@@ -410,7 +418,7 @@ void (*const asidstartcmdhandler[])(void) = {
  &start_handle_copy, // 5a ASID_CMD_COPY_RECT_BUFFER
  &start_handle_reu, // 5b ASID_CMD_REU_STASH_BUFFER
  &start_handle_reu, // 5c ASID_CMD_REU_FETCH_BUFFER
- &noop,  // 5d
+ &start_handle_reu_fill, // 5d ASID_CMD_REU_FILL_BUFFER
  &noop, // 5e
  &noop, // 5f
  &noop, // 60
@@ -541,7 +549,7 @@ void (*const asidstopcmdhandler[])(void) = {
  &copyrectbuffer, // 5a ASID_CMD_COPY_RECT_BUFFER
  &reustash, // 5b ASID_CMD_REU_STASH_BUFFER
  &reufetch, // 5c ASID_CMD_REU_FETCH_BUFFER
- &noop,  // 5d
+ &reufetch, // 5d ASID_CMD_REU_FILL_BUFFER
  &noop, // 5e
  &noop, // 5f
  &noop, // 60