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mesh: implement more register reads.

This commit is contained in:
Maxim Poliakovski 2023-08-09 01:39:53 +02:00
parent de1f0c8a9b
commit ee9c692115
2 changed files with 15 additions and 1 deletions
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14
devices/common/scsi/mesh.cpp
View File

@ -46,23 +46,31 @@ int MeshController::device_postinit()
void MeshController::reset(bool is_hard_reset)
{
this->cur_cmd = SeqCmd::NoOperation;
this->fifo_cnt = 0;
this->int_mask = 0;
this->xfer_count = 0;
if (is_hard_reset) {
this->bus_stat = 0;
this->sync_params = 2; // guessed
this->sync_params = (0 << 16) | 2; // fast async operation (guessed)
}
}
uint8_t MeshController::read(uint8_t reg_offset)
{
switch(reg_offset) {
case MeshReg::XferCount0:
return this->xfer_count & 0xFFU;
case MeshReg::XferCount1:
return (this->xfer_count >> 8) & 0xFFU;
case MeshReg::Sequence:
return this->cur_cmd;
case MeshReg::BusStatus0:
return this->bus_obj->test_ctrl_lines(0xFFU);
case MeshReg::BusStatus1:
return this->bus_obj->test_ctrl_lines(0xE000U) >> 8;
case MeshReg::FIFOCount:
return this->fifo_cnt;
case MeshReg::Exception:
return 0;
case MeshReg::Error:
@ -71,6 +79,10 @@ uint8_t MeshController::read(uint8_t reg_offset)
return this->int_mask;
case MeshReg::Interrupt:
return this->int_stat;
case MeshReg::DestID:
return this->dst_id;
case MeshReg::SyncParms:
return this->sync_params;
case MeshReg::MeshID:
return this->chip_id; // tell them who we are
default:

2
devices/common/scsi/mesh.h
View File

@ -138,7 +138,9 @@ private:
uint8_t dst_id;
uint8_t cur_cmd;
uint8_t error;
uint8_t fifo_cnt;
uint8_t exception;
uint32_t xfer_count;
ScsiBus* bus_obj;
uint16_t bus_stat;