From 56c54e4c8cdf594ad965377bbf0f9792d80e8b13 Mon Sep 17 00:00:00 2001
From: Maxim Poliakovski <maximumspatium@googlemail.com>
Date: Fri, 19 Aug 2022 18:55:33 +0200
Subject: [PATCH] pcihost: add attach_pci_device method.

---
 devices/common/pci/pcihost.cpp | 46 ++++++++++++++++++++++++++++++++++
 devices/common/pci/pcihost.h   |  7 +++++-
 2 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/devices/common/pci/pcihost.cpp b/devices/common/pci/pcihost.cpp
index 4304d7a..51dacf1 100644
--- a/devices/common/pci/pcihost.cpp
+++ b/devices/common/pci/pcihost.cpp
@@ -1,7 +1,30 @@
+/*
+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/pcidevice.h>
 #include <devices/common/pci/pcihost.h>
 #include <devices/memctrl/memctrlbase.h>
 #include <machines/machinebase.h>
+#include <loguru.hpp>
 
 #include <cinttypes>
 
@@ -29,3 +52,26 @@ bool PCIHost::pci_register_mmio_region(uint32_t start_addr, uint32_t size, PCIDe
     // FIXME: add sanity checks!
     return mem_ctrl->add_mmio_region(start_addr, size, obj);
 }
+
+void PCIHost::attach_pci_device(std::string& dev_name, int slot_id)
+{
+    if (!DeviceRegistry::device_registered(dev_name)) {
+        LOG_F(WARNING, "PCIHost: specified PCI device %s doesn't exist", dev_name.c_str());
+        return;
+    }
+
+    // attempt to create device object
+    auto dev_obj = DeviceRegistry::get_descriptor(dev_name).m_create_func();
+
+    if (!dev_obj->supports_type(HWCompType::PCI_DEV)) {
+        LOG_F(WARNING, "PCIHost: cannot attach non-PCI device %s", dev_name.c_str());
+        return;
+    }
+
+    // add device to the machine object
+    gMachineObj->add_device(dev_name, std::move(dev_obj));
+
+    // register device with the PCI host
+    this->pci_register_device(
+        slot_id, dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name(dev_name)));
+}
diff --git a/devices/common/pci/pcihost.h b/devices/common/pci/pcihost.h
index 95ef0da..d21c27e 100644
--- a/devices/common/pci/pcihost.h
+++ b/devices/common/pci/pcihost.h
@@ -1,6 +1,6 @@
 /*
 DingusPPC - The Experimental PowerPC Macintosh emulator
-Copyright (C) 2018-21 divingkatae and maximum
+Copyright (C) 2018-22 divingkatae and maximum
                       (theweirdo)     spatium
 
 (Contact divingkatae#1017 or powermax#2286 on Discord for more info)
@@ -22,7 +22,10 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #ifndef PCI_HOST_H
 #define PCI_HOST_H
 
+#include <devices/deviceregistry.h>
+
 #include <cinttypes>
+#include <string>
 #include <unordered_map>
 #include <vector>
 
@@ -40,6 +43,8 @@ public:
 
     virtual bool pci_register_mmio_region(uint32_t start_addr, uint32_t size, PCIDevice* obj);
 
+    virtual void attach_pci_device(std::string& dev_name, int slot_id);
+
 protected:
     std::unordered_map<int, PCIDevice*> dev_map;
     std::vector<PCIDevice*>             io_space_devs;