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ADB fixes

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@965 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard
2004-06-21 22:46:10 +00:00
parent 637f6cd735
commit e2733d20b2
3 changed files with 210 additions and 108 deletions
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50
hw/cuda.c
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@@ -85,6 +85,7 @@
#define CUDA_COMBINED_FORMAT_IIC 0x25
#define CUDA_TIMER_FREQ (4700000 / 6)
#define CUDA_ADB_POLL_FREQ 50
typedef struct CUDATimer {
unsigned int latch;
@@ -121,6 +122,7 @@ typedef struct CUDAState {
uint8_t autopoll;
uint8_t data_in[128];
uint8_t data_out[16];
QEMUTimer *adb_poll_timer;
} CUDAState;
static CUDAState cuda_state;
@@ -469,15 +471,42 @@ void adb_send_packet(ADBBusState *bus, const uint8_t *buf, int len)
cuda_send_packet_to_host(s, data, len + 1);
}
void cuda_adb_poll(void *opaque)
{
CUDAState *s = opaque;
uint8_t obuf[ADB_MAX_OUT_LEN + 2];
int olen;
olen = adb_poll(&adb_bus, obuf + 2);
if (olen > 0) {
obuf[0] = ADB_PACKET;
obuf[1] = 0x40; /* polled data */
cuda_send_packet_to_host(s, obuf, olen + 2);
}
qemu_mod_timer(s->adb_poll_timer,
qemu_get_clock(vm_clock) +
(ticks_per_sec / CUDA_ADB_POLL_FREQ));
}
static void cuda_receive_packet(CUDAState *s,
const uint8_t *data, int len)
{
uint8_t obuf[16];
int ti;
int ti, autopoll;
switch(data[0]) {
case CUDA_AUTOPOLL:
s->autopoll = data[1];
autopoll = (data[1] != 0);
if (autopoll != s->autopoll) {
s->autopoll = autopoll;
if (autopoll) {
qemu_mod_timer(s->adb_poll_timer,
qemu_get_clock(vm_clock) +
(ticks_per_sec / CUDA_ADB_POLL_FREQ));
} else {
qemu_del_timer(s->adb_poll_timer);
}
}
obuf[0] = CUDA_PACKET;
obuf[1] = data[1];
cuda_send_packet_to_host(s, obuf, 2);
@@ -522,7 +551,20 @@ static void cuda_receive_packet_from_host(CUDAState *s,
#endif
switch(data[0]) {
case ADB_PACKET:
adb_receive_packet(&adb_bus, data + 1, len - 1);
{
uint8_t obuf[ADB_MAX_OUT_LEN + 2];
int olen;
olen = adb_request(&adb_bus, obuf + 2, data + 1, len - 1);
if (olen != 0) {
obuf[0] = ADB_PACKET;
obuf[1] = 0x00;
} else {
/* empty reply */
obuf[0] = ADB_PACKET;
obuf[1] = 0x02;
}
cuda_send_packet_to_host(s, obuf, olen + 2);
}
break;
case CUDA_PACKET:
cuda_receive_packet(s, data + 1, len - 1);
@@ -574,6 +616,8 @@ int cuda_init(openpic_t *openpic, int irq)
s->timers[1].latch = 0x10000;
s->ier = T1_INT | SR_INT;
set_counter(s, &s->timers[1], 0xffff);
s->adb_poll_timer = qemu_new_timer(vm_clock, cuda_adb_poll, s);
cuda_mem_index = cpu_register_io_memory(0, cuda_read, cuda_write, s);
return cuda_mem_index;
}