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viacuda: implement basic autopolling.

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This commit is contained in:
Maxim Poliakovski 2023-08-02 00:07:17 +02:00
parent 2e50b364c4
commit 1a883ba73e
3 changed files with 45 additions and 0 deletions
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1
devices/common/adb/adbbus.h
View File

@ -38,6 +38,7 @@ enum {
ADB_STAT_OK = 0,
ADB_STAT_SRQ_ACTIVE = 1 << 0,
ADB_STAT_TIMEOUT = 1 << 1,
ADB_STAT_AUTOPOLL = 1 << 6,
};
class AdbDevice; // forward declaration to prevent compiler errors

40
devices/common/viacuda.cpp
View File

@ -22,6 +22,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
/** High-level VIA-CUDA combo device emulation.
*/
#include <core/hostevents.h>
#include <core/timermanager.h>
#include <devices/common/hwinterrupt.h>
#include <devices/common/viacuda.h>
@ -79,6 +80,9 @@ ViaCuda::ViaCuda() {
// establish ADB bus connection
this->adb_bus_obj = dynamic_cast<AdbBus*>(gMachineObj->get_comp_by_type(HWCompType::ADB_HOST));
// autopoll handler will be called during post-processing of the host events
EventManager::get_instance()->add_post_handler(this, &ViaCuda::autopoll_handler);
this->cuda_init();
this->int_ctrl = nullptr;
@ -468,6 +472,40 @@ void ViaCuda::process_adb_command() {
}
}
void ViaCuda::autopoll_handler() {
uint8_t adb_status, output_size;
if (!this->autopoll_enabled)
return;
// send TALK R0 command to address 3 (mouse)
uint8_t in_data[2] = { 0x3C, 0};
adb_status = this->adb_bus_obj->process_command(in_data, 1);
if (adb_status == ADB_STAT_OK) {
if (!this->old_tip || !this->treq) {
LOG_F(WARNING, "Cuda transaction probably in progress");
}
// prepare autopoll packet
response_header(CUDA_PKT_ADB, adb_status | ADB_STAT_AUTOPOLL);
this->out_buf[2] = 0x3C; // put the proper ADB command
output_size = this->adb_bus_obj->get_output_count();
if (output_size) {
std::memcpy(&this->out_buf[3], this->adb_bus_obj->get_output_buf(), output_size);
this->out_count += output_size;
}
// assert TREQ
this->via_regs[VIA_B] &= ~CUDA_TREQ;
this->treq = 0;
// draw guest system's attention
schedule_sr_int(USECS_TO_NSECS(30));
}
}
void ViaCuda::pseudo_command(int cmd, int data_count) {
uint16_t addr;
int i;
@ -476,8 +514,10 @@ void ViaCuda::pseudo_command(int cmd, int data_count) {
case CUDA_START_STOP_AUTOPOLL:
if (this->in_buf[2]) {
LOG_F(INFO, "Cuda: autopoll started, rate: %d ms", this->poll_rate);
this->autopoll_enabled = true;
} else {
LOG_F(INFO, "Cuda: autopoll stopped");
this->autopoll_enabled = false;
}
response_header(CUDA_PKT_PSEUDO, 0);
break;

4
devices/common/viacuda.h
View File

@ -223,7 +223,9 @@ private:
void (ViaCuda::*next_out_handler)(void);
std::unique_ptr<NVram> pram_obj;
AdbBus* adb_bus_obj = nullptr;
bool autopoll_enabled = false;
// VIA methods
void print_enabled_ints(); // print enabled VIA interrupts and their sources
@ -249,6 +251,8 @@ private:
void out_buf_handler(void);
void i2c_handler(void);
void autopoll_handler();
/* I2C related methods */
void i2c_simple_transaction(uint8_t dev_addr, const uint8_t* in_buf, int in_bytes);
void i2c_comb_transaction(