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6d23e18c11
PCCard is used by PowerBook G3 Wallstreet in Open Firmware 2.0.1. CardBus is probed in New World Macs starting from at least Open Firmware 4.1.9f1 sometime after Open Firmware 3.1.1. - Create PCIBase from common stuff in PCIDevice. - Add PCIBridgeBase. These have a primary bus number, secondary bus number, and subordinate bus number which are used to determine if PCI type 1 config cycle should be passed. - Change PCIBridge to use PCIBridgeBase instead of PCIDevice. - Add PCICardBusBridge which uses PCIBridgeBase.
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef PCI_DEVICE_H
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#define PCI_DEVICE_H
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#include <devices/common/pci/pcibase.h>
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/** PCI configuration space registers offsets */
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enum {
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PCI_CFG_BAR2 = 0x18, // base address register 2
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PCI_CFG_BAR3 = 0x1C, // base address register 3
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PCI_CFG_BAR4 = 0x20, // base address register 4
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PCI_CFG_BAR5 = 0x24, // base address register 5
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PCI_CFG_CIS_PTR = 0x28, // Cardbus CIS Pointer
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PCI_CFG_SUBSYS_ID = 0x2C, // Subsysten IDs
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PCI_CFG_ROM_BAR = 0x30, // expansion ROM base address
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};
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class PCIDevice : public PCIBase {
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public:
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PCIDevice(std::string name);
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virtual ~PCIDevice() = default;
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// configuration space access methods
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virtual uint32_t pci_cfg_read(uint32_t reg_offs, AccessDetails &details);
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virtual void pci_cfg_write(uint32_t reg_offs, uint32_t value, AccessDetails &details);
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protected:
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// PCI configuration space state
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uint8_t max_lat = 0;
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uint8_t min_gnt = 0;
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uint16_t subsys_id = 0;
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uint16_t subsys_vndr = 0;
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};
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#endif /* PCI_DEVICE_H */
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