dingusppc/devices/heathrow.cpp
2020-05-12 23:55:45 +05:00

248 lines
7.1 KiB
C++

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-20 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "awacs.h"
#include "dbdma.h"
#include "machines/machinebase.h"
#include "macio.h"
#include "viacuda.h"
#include <cinttypes>
#include <iostream>
#include <thirdparty/loguru/loguru.hpp>
/** Heathrow Mac I/O device emulation.
Author: Max Poliakovski 2019
*/
using namespace std;
HeathrowIC::HeathrowIC() : PCIDevice("mac-io/heathrow") {
this->nvram = new NVram();
this->viacuda = new ViaCuda();
gMachineObj->add_subdevice("ViaCuda", this->viacuda);
this->screamer = new AWACDevice();
this->snd_out_dma = new DMAChannel(this->screamer);
this->screamer->set_dma_out(this->snd_out_dma);
}
HeathrowIC::~HeathrowIC() {
if (this->nvram)
delete (this->nvram);
if (this->viacuda)
delete (this->viacuda);
}
uint32_t HeathrowIC::pci_cfg_read(uint32_t reg_offs, uint32_t size) {
return this->pci_cfg_hdr[reg_offs & 0xFF];
}
void HeathrowIC::pci_cfg_write(uint32_t reg_offs, uint32_t value, uint32_t size) {
switch (reg_offs) {
case CFG_REG_BAR0: // base address register
value = LE2BE(value);
if (value == 0xFFFFFFFF) {
LOG_F(
ERROR,
"%s err: BAR0 block size determination not \
implemented yet \n",
this->name.c_str());
} else if (value & 1) {
LOG_F(ERROR, "%s err: BAR0 I/O space not supported! \n", this->name.c_str());
} else if (value & 0x06) {
LOG_F(ERROR, "%s err: BAR0 64-bit I/O space not supported! \n", this->name.c_str());
} else {
this->base_addr = value & 0xFFF80000;
this->host_instance->pci_register_mmio_region(this->base_addr, 0x80000, this);
LOG_F(INFO, "%s base address set to %x \n", this->name.c_str(), this->base_addr);
}
break;
}
}
uint32_t HeathrowIC::dma_read(uint32_t offset, int size) {
uint32_t res = 0;
switch (offset >> 8) {
case 8:
res = this->snd_out_dma->reg_read(offset & 0xFF, size);
break;
default:
LOG_F(WARNING, "Unsupported DMA channel read, offset=0x%X", offset);
}
return res;
}
void HeathrowIC::dma_write(uint32_t offset, uint32_t value, int size) {
switch (offset >> 8) {
case 8:
this->snd_out_dma->reg_write(offset & 0xFF, value, size);
break;
default:
LOG_F(WARNING, "Unsupported DMA channel write, offset=0x%X, val=0x%X", offset, value);
}
}
uint32_t HeathrowIC::read(uint32_t reg_start, uint32_t offset, int size) {
uint32_t res = 0;
LOG_F(9, "%s: reading from offset %x \n", this->name.c_str(), offset);
unsigned sub_addr = (offset >> 12) & 0x7F;
switch (sub_addr) {
case 0:
res = mio_ctrl_read(offset, size);
break;
case 8:
res = dma_read(offset - 0x8000, size);
break;
case 0x14:
res = this->screamer->snd_ctrl_read(offset - 0x14000, size);
break;
case 0x16:
case 0x17:
res = this->viacuda->read((offset - 0x16000) >> 9);
break;
default:
if (sub_addr >= 0x60) {
res = this->nvram->read_byte((offset - 0x60000) >> 4);
} else {
LOG_F(WARNING, "Attempting to read unmapped I/O space: %x \n", offset);
}
}
return res;
}
void HeathrowIC::write(uint32_t reg_start, uint32_t offset, uint32_t value, int size) {
LOG_F(9, "%s: writing to offset %x \n", this->name.c_str(), offset);
unsigned sub_addr = (offset >> 12) & 0x7F;
switch (sub_addr) {
case 0:
mio_ctrl_write(offset, value, size);
break;
case 8:
dma_write(offset - 0x8000, value, size);
break;
case 0x14:
this->screamer->snd_ctrl_write(offset - 0x14000, value, size);
break;
case 0x16:
case 0x17:
this->viacuda->write((offset - 0x16000) >> 9, value);
break;
default:
if (sub_addr >= 0x60) {
this->nvram->write_byte((offset - 0x60000) >> 4, value);
} else {
LOG_F(WARNING, "Attempting to write to unmapped I/O space: %x \n", offset);
}
}
}
uint32_t HeathrowIC::mio_ctrl_read(uint32_t offset, int size) {
uint32_t res = 0;
switch (offset & 0xFF) {
case 0x14:
LOG_F(9, "read from MIO:Int_Mask2 register \n");
res = this->int_mask2;
break;
case 0x18:
LOG_F(9, "read from MIO:Int_Clear2 register \n");
res = this->int_clear2;
break;
case 0x1C:
LOG_F(9, "read from MIO:Int_Levels2 register \n");
res = this->int_levels2;
break;
case 0x24:
LOG_F(9, "read from MIO:Int_Mask1 register \n");
res = this->int_mask1;
break;
case 0x28:
LOG_F(9, "read from MIO:Int_Clear1 register \n");
res = this->int_clear1;
break;
case 0x2C:
LOG_F(9, "read from MIO:Int_Levels1 register \n");
res = this->int_levels1;
break;
case 0x34: /* heathrowIDs / HEATHROW_MBCR (Linux): media bay config reg? */
res = 0xF0700000UL;
break;
case 0x38:
LOG_F(9, "read from MIO:Feat_Ctrl register \n");
res = this->feat_ctrl;
break;
default:
LOG_F(WARNING, "unknown MIO register at %x \n", offset);
break;
}
return res;
}
void HeathrowIC::mio_ctrl_write(uint32_t offset, uint32_t value, int size) {
switch (offset & 0xFF) {
case 0x14:
LOG_F(9, "read from MIO:Int_Mask2 register \n");
this->int_mask2 = value;
break;
case 0x18:
LOG_F(9, "read from MIO:Int_Clear2 register \n");
this->int_clear2 = value;
break;
case 0x1C:
LOG_F(9, "read from MIO:Int_Levels2 register \n");
this->int_levels2 = value;
break;
case 0x24:
LOG_F(9, "write %x to MIO:Int_Mask1 register \n", value);
this->int_mask1 = value;
break;
case 0x28:
LOG_F(9, "write %x to MIO:Int_Clear1 register \n", value);
this->int_clear1 = value;
break;
case 0x2C:
LOG_F(9, "read from MIO:Int_Levels1 register \n");
this->int_levels1 = value;
break;
case 0x38:
LOG_F(9, "write %x to MIO:Feat_Ctrl register \n", value);
this->feat_ctrl = value;
break;
default:
LOG_F(WARNING, "unknown MIO register at %x \n", offset);
break;
}
}