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char/serial: Use generic Fifo8

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Use the generic Fifo8 helper provided by QEMU, rather than re-implement
privately.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Peter Crosthwaite 2013-06-03 15:13:27 +10:00 • committed by Michael Tokarev
parent 7f4f0a227f
commit 8e8638fa87
2 changed files with 39 additions and 74 deletions
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15
include/hw/char/serial.h
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@ -28,17 +28,10 @@
#include "hw/hw.h"
#include "sysemu/sysemu.h"
#include "exec/memory.h"
#include "qemu/fifo8.h"
#define UART_FIFO_LENGTH 16 /* 16550A Fifo Length */
typedef struct SerialFIFO {
uint8_t data[UART_FIFO_LENGTH];
uint8_t count;
uint8_t itl; /* Interrupt Trigger Level */
uint8_t tail;
uint8_t head;
} SerialFIFO;
struct SerialState {
uint16_t divider;
uint8_t rbr; /* receive register */
@ -67,8 +60,10 @@ struct SerialState {
/* Time when the last byte was successfully sent out of the tsr */
uint64_t last_xmit_ts;
SerialFIFO recv_fifo;
SerialFIFO xmit_fifo;
Fifo8 recv_fifo;
Fifo8 xmit_fifo;
/* Interrupt trigger level for recv_fifo */
uint8_t recv_fifo_itl;
struct QEMUTimer *fifo_timeout_timer;
int timeout_ipending; /* timeout interrupt pending state */