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Serial receive/transmit rework (uses the new fifo.c API) and a small GDB stub fix.

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This commit is contained in:
OBattler
2023-08-18 05:57:32 +02:00
parent 5baf1a5ef4
commit 565421a252
9 changed files with 870 additions and 224 deletions
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68
src/include/86box/fifo.h Normal file
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@@ -0,0 +1,68 @@
/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* FIFO infrastructure header.
*
* Authors: Miran Grca, <mgrca8@gmail.com>
*
* Copyright 2023 Miran Grca.
*/
#define FIFO(size) \
typedef struct \
{ \
int start, end, \
trigger_len, len, \
empty, overrun, \
full, ready, \
d_empty, d_overrun, \
d_full, d_ready; \
\
void *priv; \
\
void (*d_empty_evt)(void *); \
void (*d_overrun_evt)(void *); \
void (*d_full_evt)(void *); \
void (*d_ready_evt)(void *); \
\
uint8_t buf[size]; \
} fifo## size ##_t;
FIFO()
FIFO(16)
#define fifo16_init() fifo_init(16)
FIFO(64)
#define fifo64_init() fifo_init(64)
extern int fifo_get_count(void *priv);
extern void fifo_write(uint8_t val, void *priv);
extern void fifo_write_evt(uint8_t val, void *priv);
extern uint8_t fifo_read(void *priv);
extern uint8_t fifo_read_evt(void *priv);
extern void fifo_clear_overrun(void *priv);
extern int fifo_get_full(void *priv);
extern int fifo_get_d_full(void *priv);
extern int fifo_get_empty(void *priv);
extern int fifo_get_d_empty(void *priv);
extern int fifo_get_overrun(void *priv);
extern int fifo_get_d_overrun(void *priv);
extern int fifo_get_ready(void *priv);
extern int fifo_get_d_ready(void *priv);
extern int fifo_get_trigger_len(void *priv);
extern void fifo_set_trigger_len(void *priv, int trigger_len);
extern void fifo_set_len(void *priv, int len);
extern void fifo_set_d_full_evt(void *priv, void (*d_full_evt)(void *));
extern void fifo_set_d_empty_evt(void *priv, void (*d_empty_evt)(void *));
extern void fifo_set_d_overrun_evt(void *priv, void (*d_overrun_evt)(void *));
extern void fifo_set_d_ready_evt(void *priv, void (*d_ready_evt)(void *));
extern void fifo_set_priv(void *priv, void *sub_priv);
extern void fifo_reset(void *priv);
extern void fifo_reset_evt(void *priv);
extern void fifo_close(void *priv);
extern void * fifo_init(int len);

16
src/include/86box/serial.h
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@@ -65,29 +65,21 @@ typedef struct serial_s {
uint8_t inst;
uint8_t transmit_enabled;
uint8_t fifo_enabled;
uint8_t rcvr_fifo_len;
uint8_t bits;
uint8_t data_bits;
uint8_t baud_cycles;
uint8_t rcvr_fifo_full;
uint8_t txsr;
uint8_t out;
uint8_t txsr_empty;
uint8_t msr_set;
uint8_t pad;
uint8_t irq_state;
uint8_t pad0;
uint16_t dlab;
uint16_t base_address;
uint16_t out_new;
uint16_t pad1;
uint16_t thr_empty;
uint8_t rcvr_fifo_pos;
uint8_t xmit_fifo_pos;
uint8_t rcvr_fifo_end;
uint8_t xmit_fifo_end;
uint8_t rcvr_fifo[SERIAL_FIFO_SIZE];
uint8_t xmit_fifo[SERIAL_FIFO_SIZE];
void *rcvr_fifo;
void *xmit_fifo;
pc_timer_t transmit_timer;
pc_timer_t timeout_timer;