dingusppc/devices/common/pci/pcihost.cpp
joevt bee24b166d Add method to attach PCI device with new name.
- Added an overloaded version of attach_pci_device which takes a suffix string that can be used to make a device name unique so that multiple devices of the same class can be added to a machine. The method returns a PCIDevice which can be easily used to attach more PCI devices if it is a PCIHost.
2023-02-05 07:17:29 -08:00

196 lines
6.4 KiB
C++

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-22 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 <devices/common/hwcomponent.h>
#include <devices/common/pci/pcibridge.h>
#include <devices/common/pci/pcihost.h>
#include <devices/memctrl/memctrlbase.h>
#include <machines/machinebase.h>
#include <endianswap.h>
#include <loguru.hpp>
#include <cinttypes>
bool PCIHost::pci_register_device(int dev_fun_num, PCIDevice* dev_instance)
{
// return false if dev_fun_num already registered
if (this->dev_map.count(dev_fun_num))
return false;
int fun_num = dev_fun_num & 7;
int dev_num = (dev_fun_num >> 3) & 0x1f;
bool is_multi_function = fun_num != 0;
for (int other_fun_num = 0; other_fun_num < 8; other_fun_num++) {
if (this->dev_map.count(DEV_FUN(dev_num, other_fun_num))) {
is_multi_function = true;
if (is_multi_function && other_fun_num == 0) {
this->dev_map[DEV_FUN(dev_num, other_fun_num)]->set_multi_function(true);
}
}
}
this->dev_map[dev_fun_num] = dev_instance;
dev_instance->set_host(this);
if (is_multi_function && fun_num == 0) {
dev_instance->set_multi_function(true);
}
if (dev_instance->supports_io_space()) {
this->io_space_devs.push_back(dev_instance);
}
PCIBridge *bridge = dynamic_cast<PCIBridge*>(dev_instance);
if (bridge) {
this->bridge_devs.push_back(bridge);
}
return true;
}
bool PCIHost::pci_register_mmio_region(uint32_t start_addr, uint32_t size, PCIDevice* obj)
{
MemCtrlBase *mem_ctrl = dynamic_cast<MemCtrlBase *>
(gMachineObj->get_comp_by_type(HWCompType::MEM_CTRL));
// FIXME: add sanity checks!
return mem_ctrl->add_mmio_region(start_addr, size, obj);
}
bool PCIHost::pci_unregister_mmio_region(uint32_t start_addr, uint32_t size, PCIDevice* obj)
{
MemCtrlBase *mem_ctrl = dynamic_cast<MemCtrlBase *>
(gMachineObj->get_comp_by_type(HWCompType::MEM_CTRL));
// FIXME: add sanity checks!
return mem_ctrl->remove_mmio_region(start_addr, size, obj);
}
void PCIHost::attach_pci_device(const std::string& dev_name, int slot_id)
{
this->attach_pci_device(dev_name, slot_id, "");
}
PCIDevice *PCIHost::attach_pci_device(const std::string& dev_name, int slot_id, const std::string& dev_suffix)
{
if (!DeviceRegistry::device_registered(dev_name)) {
HWComponent *hwc = dynamic_cast<HWComponent*>(this);
LOG_F(
WARNING, "%s: specified PCI device %s doesn't exist",
hwc ? hwc->get_name().c_str() : "PCIHost", dev_name.c_str()
);
return NULL;
}
// attempt to create device object
auto dev_obj = DeviceRegistry::get_descriptor(dev_name).m_create_func();
if (!dev_obj->supports_type(HWCompType::PCI_DEV)) {
HWComponent *hwc = dynamic_cast<HWComponent*>(this);
LOG_F(
WARNING, "%s: cannot attach non-PCI device %s",
hwc ? hwc->get_name().c_str() : "PCIHost", dev_name.c_str()
);
return NULL;
}
// add device to the machine object
gMachineObj->add_device(dev_name + dev_suffix, std::move(dev_obj));
PCIDevice *dev = dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name(dev_name + dev_suffix));
// register device with the PCI host
this->pci_register_device(slot_id, dev);
return dev;
}
bool PCIHost::pci_io_read_loop(uint32_t offset, int size, uint32_t &res)
{
for (auto& dev : this->io_space_devs) {
if (dev->pci_io_read(offset, size, &res)) {
return true;
}
}
return false;
}
bool PCIHost::pci_io_write_loop(uint32_t offset, int size, uint32_t value)
{
for (auto& dev : this->io_space_devs) {
if (dev->pci_io_write(offset, value, size)) {
return true;
}
}
return false;
}
uint32_t PCIHost::pci_io_read_broadcast(uint32_t offset, int size)
{
uint32_t res;
// broadcast I/O request to devices that support I/O space
// until a device returns true that means "request accepted"
if (pci_io_read_loop (offset, size, res)) {
return res;
}
HWComponent *hwc = dynamic_cast<HWComponent*>(this);
LOG_F(
ERROR, "%s: Attempt to read from unmapped PCI I/O space @%08x.%c",
hwc ? hwc->get_name().c_str() : "PCIHost", offset,
size == 4 ? 'l' : size == 2 ? 'w' : size == 1 ? 'b' : '0' + size
);
// FIXME: add machine check exception (DEFAULT CATCH!, code=FFF00200)
return 0;
}
void PCIHost::pci_io_write_broadcast(uint32_t offset, int size, uint32_t value)
{
// broadcast I/O request to devices that support I/O space
// until a device returns true that means "request accepted"
if (pci_io_write_loop(offset, size, value)) {
return;
}
HWComponent *hwc = dynamic_cast<HWComponent*>(this);
LOG_F(
ERROR, "%s: Attempt to write to unmapped PCI I/O space @%08x.%c = %0*x",
hwc ? hwc->get_name().c_str() : "PCIHost", offset,
size == 4 ? 'l' : size == 2 ? 'w' : size == 1 ? 'b' : '0' + size,
size * 2, BYTESWAP_SIZED(value, size)
);
}
PCIDevice *PCIHost::pci_find_device(uint8_t bus_num, uint8_t dev_num, uint8_t fun_num)
{
for (auto& bridge : this->bridge_devs) {
if (bridge->secondary_bus <= bus_num) {
if (bridge->secondary_bus == bus_num) {
if (bridge->dev_map.count(DEV_FUN(dev_num, fun_num))) {
return bridge->dev_map[DEV_FUN(dev_num, fun_num)];
}
}
else if (bridge->subordinate_bus >= bus_num) {
return bridge->pci_find_device(bus_num, dev_num, fun_num);
}
}
}
return NULL;
}