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cadence_uart: More debug information 

Add more helpful debug information to the cadence UART.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Peter Crosthwaite 2012-10-19 19:08:04 +10:00 committed by Stefan Hajnoczi
parent 286d52ebfc
commit 2ddef11bed
1 changed files with 7 additions and 4 deletions
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11
hw/cadence_uart.c
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@ -359,7 +359,7 @@ static void uart_write(void *opaque, hwaddr offset,
{ {
UartState *s = (UartState *)opaque; UartState *s = (UartState *)opaque;
DB_PRINT(" offset:%x data:%08x\n", offset, (unsigned)value); DB_PRINT(" offset:%x data:%08x\n", (unsigned)offset, (unsigned)value);
offset >>= 2; offset >>= 2;
switch (offset) { switch (offset) {
case R_IER: /* ier (wts imr) */ case R_IER: /* ier (wts imr) */
@ -405,12 +405,15 @@ static uint64_t uart_read(void *opaque, hwaddr offset,
offset >>= 2; offset >>= 2;
if (offset >= R_MAX) { if (offset >= R_MAX) {
return 0; c = 0;
} else if (offset == R_TX_RX) { } else if (offset == R_TX_RX) {
uart_read_rx_fifo(s, &c); uart_read_rx_fifo(s, &c);
return c; } else {
c = s->r[offset];
} }
return s->r[offset];
DB_PRINT(" offset:%x data:%08x\n", (unsigned)(offset << 2), (unsigned)c);
return c;
} }
static const MemoryRegionOps uart_ops = { static const MemoryRegionOps uart_ops = {