/*
* QEMU Sparc SLAVIO serial port emulation
*
- * Copyright (c) 2003-2004 Fabrice Bellard
+ * Copyright (c) 2003-2005 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* THE SOFTWARE.
*/
#include "vl.h"
-
+/* debug serial */
//#define DEBUG_SERIAL
/* debug keyboard */
//#define DEBUG_KBD
-/* debug keyboard : only mouse */
+/* debug mouse */
//#define DEBUG_MOUSE
/*
*
*/
+#ifdef DEBUG_SERIAL
+#define SER_DPRINTF(fmt, args...) \
+do { printf("SER: " fmt , ##args); } while (0)
+#else
+#define SER_DPRINTF(fmt, args...)
+#endif
+#ifdef DEBUG_KBD
+#define KBD_DPRINTF(fmt, args...) \
+do { printf("KBD: " fmt , ##args); } while (0)
+#else
+#define KBD_DPRINTF(fmt, args...)
+#endif
+#ifdef DEBUG_MOUSE
+#define MS_DPRINTF(fmt, args...) \
+do { printf("SER: " fmt , ##args); } while (0)
+#else
+#define MS_DPRINTF(fmt, args...)
+#endif
+
+typedef enum {
+ chn_a, chn_b,
+} chn_id_t;
+
+typedef enum {
+ ser, kbd, mouse,
+} chn_type_t;
+
+#define KBD_QUEUE_SIZE 256
+
+typedef struct {
+ uint8_t data[KBD_QUEUE_SIZE];
+ int rptr, wptr, count;
+} KBDQueue;
+
typedef struct ChannelState {
int irq;
int reg;
int rxint, txint;
+ chn_id_t chn; // this channel, A (base+4) or B (base+0)
+ chn_type_t type;
+ struct ChannelState *otherchn;
uint8_t rx, tx, wregs[16], rregs[16];
+ KBDQueue queue;
CharDriverState *chr;
} ChannelState;
#define SERIAL_MAXADDR 7
+static void handle_kbd_command(ChannelState *s, int val);
+static int serial_can_receive(void *opaque);
+static void serial_receive_byte(ChannelState *s, int ch);
+
+static void put_queue(void *opaque, int b)
+{
+ ChannelState *s = opaque;
+ KBDQueue *q = &s->queue;
+
+ KBD_DPRINTF("put: 0x%02x\n", b);
+ if (q->count >= KBD_QUEUE_SIZE)
+ return;
+ q->data[q->wptr] = b;
+ if (++q->wptr == KBD_QUEUE_SIZE)
+ q->wptr = 0;
+ q->count++;
+ serial_receive_byte(s, 0);
+}
+
+static uint32_t get_queue(void *opaque)
+{
+ ChannelState *s = opaque;
+ KBDQueue *q = &s->queue;
+ int val;
+
+ if (q->count == 0) {
+ return 0;
+ } else {
+ val = q->data[q->rptr];
+ if (++q->rptr == KBD_QUEUE_SIZE)
+ q->rptr = 0;
+ q->count--;
+ }
+ KBD_DPRINTF("get 0x%02x\n", val);
+ if (q->count > 0)
+ serial_receive_byte(s, 0);
+ return val;
+}
+
static void slavio_serial_update_irq(ChannelState *s)
{
if ((s->wregs[1] & 1) && // interrupts enabled
s = &ser->chn[channel];
switch (saddr) {
case 0:
+ SER_DPRINTF("Write channel %c, reg[%d] = %2.2x\n", channel? 'b' : 'a', s->reg, val & 0xff);
newreg = 0;
switch (s->reg) {
case 0:
s->reg = 0;
break;
case 1:
+ SER_DPRINTF("Write channel %c, ch %d\n", channel? 'b' : 'a', val);
if (s->wregs[5] & 8) { // tx enabled
s->tx = val;
if (s->chr)
qemu_chr_write(s->chr, &s->tx, 1);
+ else if (s->type == kbd) {
+ handle_kbd_command(s, val);
+ }
s->txint = 1;
+ s->rregs[0] |= 4;
+ // Interrupts reported only on channel A
+ if (s->chn == 0)
+ s->rregs[3] |= 0x10;
+ else {
+ s->otherchn->rregs[3] |= 2;
+ }
+ slavio_serial_update_irq(s);
}
break;
default:
s = &ser->chn[channel];
switch (saddr) {
case 0:
+ SER_DPRINTF("Read channel %c, reg[%d] = %2.2x\n", channel? 'b' : 'a', s->reg, s->rregs[s->reg]);
ret = s->rregs[s->reg];
s->reg = 0;
return ret;
case 1:
+ SER_DPRINTF("Read channel %c, ch %d\n", channel? 'b' : 'a', s->rx);
s->rregs[0] &= ~1;
- return s->rx;
+ if (s->type == kbd)
+ ret = get_queue(s);
+ else
+ ret = s->rx;
+ return ret;
default:
break;
}
static void serial_receive_byte(ChannelState *s, int ch)
{
s->rregs[0] |= 1;
+ // Interrupts reported only on channel A
+ if (s->chn == 0)
+ s->rregs[3] |= 0x20;
+ else {
+ s->otherchn->rregs[3] |= 4;
+ }
s->rx = ch;
s->rxint = 1;
slavio_serial_update_irq(s);
SerialState *slavio_serial_init(int base, int irq, CharDriverState *chr1, CharDriverState *chr2)
{
- int slavio_serial_io_memory;
+ int slavio_serial_io_memory, i;
SerialState *s;
s = qemu_mallocz(sizeof(SerialState));
if (!s)
return NULL;
- s->chn[0].irq = irq;
- s->chn[1].irq = irq;
- s->chn[0].chr = chr1;
- s->chn[1].chr = chr2;
slavio_serial_io_memory = cpu_register_io_memory(0, slavio_serial_mem_read, slavio_serial_mem_write, s);
cpu_register_physical_memory(base, SERIAL_MAXADDR, slavio_serial_io_memory);
- if (chr1) {
- qemu_chr_add_read_handler(chr1, serial_can_receive, serial_receive1, &s->chn[0]);
- qemu_chr_add_event_handler(chr1, serial_event);
- }
- if (chr2) {
- qemu_chr_add_read_handler(chr2, serial_can_receive, serial_receive1, &s->chn[1]);
- qemu_chr_add_event_handler(chr2, serial_event);
+ s->chn[0].chr = chr1;
+ s->chn[1].chr = chr2;
+
+ for (i = 0; i < 2; i++) {
+ s->chn[i].irq = irq;
+ s->chn[i].chn = 1 - i;
+ s->chn[i].type = ser;
+ if (s->chn[i].chr) {
+ qemu_chr_add_read_handler(s->chn[i].chr, serial_can_receive, serial_receive1, &s->chn[i]);
+ qemu_chr_add_event_handler(s->chn[i].chr, serial_event);
+ }
}
+ s->chn[0].otherchn = &s->chn[1];
+ s->chn[1].otherchn = &s->chn[0];
register_savevm("slavio_serial", base, 1, slavio_serial_save, slavio_serial_load, s);
qemu_register_reset(slavio_serial_reset, s);
slavio_serial_reset(s);
return s;
}
+static const uint8_t keycodes[128] = {
+ 127, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 53,
+ 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 89, 76, 77, 78,
+ 79, 80, 81, 82, 83, 84, 85, 86, 87, 42, 99, 88, 100, 101, 102, 103,
+ 104, 105, 106, 107, 108, 109, 110, 47, 19, 121, 119, 5, 6, 8, 10, 12,
+ 14, 16, 17, 18, 7, 98, 23, 68, 69, 70, 71, 91, 92, 93, 125, 112,
+ 113, 114, 94, 50, 0, 0, 124, 9, 11, 0, 0, 0, 0, 0, 0, 0,
+ 90, 0, 46, 22, 13, 111, 52, 20, 96, 24, 28, 74, 27, 123, 44, 66,
+ 0, 45, 2, 4, 48, 0, 0, 21, 0, 0, 0, 0, 0, 120, 122, 67,
+};
+
static void sunkbd_event(void *opaque, int ch)
{
ChannelState *s = opaque;
- // XXX: PC -> Sun Type 5 translation?
- serial_receive_byte(s, ch);
+ int release = ch & 0x80;
+
+ ch = keycodes[ch & 0x7f];
+ KBD_DPRINTF("Keycode %d (%s)\n", ch, release? "release" : "press");
+ put_queue(s, ch | release);
+}
+
+static void handle_kbd_command(ChannelState *s, int val)
+{
+ KBD_DPRINTF("Command %d\n", val);
+ switch (val) {
+ case 1: // Reset, return type code
+ put_queue(s, 0xff);
+ put_queue(s, 0xff);
+ put_queue(s, 5); // Type 5
+ break;
+ case 7: // Query layout
+ put_queue(s, 0xfe);
+ put_queue(s, 0x20); // XXX, layout?
+ break;
+ default:
+ break;
+ }
}
static void sunmouse_event(void *opaque,
void slavio_serial_ms_kbd_init(int base, int irq)
{
- int slavio_serial_io_memory;
+ int slavio_serial_io_memory, i;
SerialState *s;
s = qemu_mallocz(sizeof(SerialState));
if (!s)
return;
- s->chn[0].irq = irq;
- s->chn[1].irq = irq;
- s->chn[0].chr = NULL;
- s->chn[1].chr = NULL;
+ for (i = 0; i < 2; i++) {
+ s->chn[i].irq = irq;
+ s->chn[i].chn = 1 - i;
+ s->chn[i].chr = NULL;
+ }
+ s->chn[0].otherchn = &s->chn[1];
+ s->chn[1].otherchn = &s->chn[0];
+ s->chn[0].type = mouse;
+ s->chn[1].type = kbd;
slavio_serial_io_memory = cpu_register_io_memory(0, slavio_serial_mem_read, slavio_serial_mem_write, s);
cpu_register_physical_memory(base, SERIAL_MAXADDR, slavio_serial_io_memory);
- qemu_add_kbd_event_handler(sunkbd_event, &s->chn[0]);
- qemu_add_mouse_event_handler(sunmouse_event, &s->chn[1]);
+ qemu_add_mouse_event_handler(sunmouse_event, &s->chn[0]);
+ qemu_add_kbd_event_handler(sunkbd_event, &s->chn[1]);
qemu_register_reset(slavio_serial_reset, s);
slavio_serial_reset(s);
}
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