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Change the accessing method of TU_FIFO from read/write_n_const_addr_full_words to get_write/read_info and advance_write/read_pointer pairs.

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This commit is contained in:
kkitayam 2021-06-02 22:18:15 +09:00
parent 3f49380b37
commit e7c9cf4aea
1 changed files with 29 additions and 5 deletions
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34
src/portable/renesas/usba/dcd_usba.c
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@ -276,6 +276,30 @@ static void pipe_read_packet(void *buf, volatile void *fifo, unsigned len)
while (len--) *p++ = *reg;
}
static void pipe_read_write_packet_ff(tu_fifo_t *f, volatile void *fifo, unsigned len, unsigned dir)
{
static const struct {
void (*tu_fifo_get_info)(tu_fifo_t *f, tu_fifo_buffer_info_t *info);
void (*tu_fifo_advance)(tu_fifo_t *f, uint16_t n);
void (*pipe_read_write)(void *buf, volatile void *fifo, unsigned len);
} ops[] = {
/* OUT */ {tu_fifo_get_write_info,tu_fifo_advance_write_pointer,pipe_read_packet},
/* IN */ {tu_fifo_get_read_info, tu_fifo_advance_read_pointer, pipe_write_packet},
};
tu_fifo_buffer_info_t info;
ops[dir].tu_fifo_get_info(f, &info);
unsigned total_len = len;
len = TU_MIN(total_len, info.len_lin);
ops[dir].pipe_read_write(info.ptr_lin, fifo, len);
unsigned rem = total_len - len;
if (rem) {
len = TU_MIN(rem, info.len_wrap);
ops[dir].pipe_read_write(info.ptr_wrap, fifo, len);
rem -= len;
}
ops[dir].tu_fifo_advance(f, total_len - rem);
}
static bool pipe0_xfer_in(void)
{
pipe_state_t *pipe = &_dcd.pipe[0];
@ -289,7 +313,7 @@ static bool pipe0_xfer_in(void)
void *buf = pipe->buf;
if (len) {
if (pipe->ff) {
tu_fifo_read_n_const_addr_full_words(buf, (void*)&USB0.CFIFO.WORD, len);
pipe_read_write_packet_ff((tu_fifo_t*)buf, &USB0.CFIFO.WORD, len, TUSB_DIR_IN);
} else {
pipe_write_packet(buf, &USB0.CFIFO.WORD, len);
pipe->buf = (uint8_t*)buf + len;
@ -311,7 +335,7 @@ static bool pipe0_xfer_out(void)
void *buf = pipe->buf;
if (len) {
if (pipe->ff) {
tu_fifo_write_n_const_addr_full_words(buf, (void*)&USB0.CFIFO.WORD, len);
pipe_read_write_packet_ff((tu_fifo_t*)buf, &USB0.CFIFO.WORD, len, TUSB_DIR_OUT);
} else {
pipe_read_packet(buf, &USB0.CFIFO.WORD, len);
pipe->buf = (uint8_t*)buf + len;
@ -343,7 +367,7 @@ static bool pipe_xfer_in(unsigned num)
void *buf = pipe->buf;
if (len) {
if (pipe->ff) {
tu_fifo_read_n_const_addr_full_words(buf, (void*)&USB0.D0FIFO.WORD, len);
pipe_read_write_packet_ff((tu_fifo_t*)buf, &USB0.D0FIFO.WORD, len, TUSB_DIR_IN);
} else {
pipe_write_packet(buf, &USB0.D0FIFO.WORD, len);
pipe->buf = (uint8_t*)buf + len;
@ -369,7 +393,7 @@ static bool pipe_xfer_out(unsigned num)
void *buf = pipe->buf;
if (len) {
if (pipe->ff) {
tu_fifo_write_n_const_addr_full_words(buf, (void*)&USB0.D0FIFO.WORD, len);
pipe_read_write_packet_ff((tu_fifo_t*)buf, &USB0.D0FIFO.WORD, len, TUSB_DIR_OUT);
} else {
pipe_read_packet(buf, &USB0.D0FIFO.WORD, len);
pipe->buf = (uint8_t*)buf + len;
@ -477,7 +501,7 @@ static bool process_pipe_xfer(int buffer_type, uint8_t ep_addr, void* buffer, ui
*ctr = USB_PIPECTR_PID_BUF;
}
}
// TU_LOG1("X %x %d\r\n", ep_addr, total_bytes);
// TU_LOG1("X %x %d %d\r\n", ep_addr, total_bytes, buffer_type);
return true;
}