mirror of https://gitee.com/openkylin/qemu.git
134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/*
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* QEMU DEC 21154 PCI bridge
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*
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* Copyright (c) 2006-2007 Fabrice Bellard
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* Copyright (c) 2007 Jocelyn Mayer
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "dec_pci.h"
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#include "sysbus.h"
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#include "pci.h"
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#include "pci_host.h"
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#include "pci_bridge.h"
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#include "pci_internals.h"
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/* debug DEC */
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//#define DEBUG_DEC
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#ifdef DEBUG_DEC
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#define DEC_DPRINTF(fmt, ...) \
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do { printf("DEC: " fmt , ## __VA_ARGS__); } while (0)
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#else
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#define DEC_DPRINTF(fmt, ...)
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#endif
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typedef struct DECState {
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SysBusDevice busdev;
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PCIHostState host_state;
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} DECState;
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static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
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{
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return irq_num;
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}
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static int dec_21154_initfn(PCIDevice *dev)
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{
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int rc;
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rc = pci_bridge_initfn(dev);
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if (rc < 0) {
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return rc;
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}
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pci_config_set_vendor_id(dev->config, PCI_VENDOR_ID_DEC);
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pci_config_set_device_id(dev->config, PCI_DEVICE_ID_DEC_21154);
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return 0;
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}
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static PCIDeviceInfo dec_21154_pci_bridge_info = {
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.qdev.name = "dec-21154-p2p-bridge",
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.qdev.desc = "DEC 21154 PCI-PCI bridge",
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.qdev.size = sizeof(PCIBridge),
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.qdev.vmsd = &vmstate_pci_device,
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.qdev.reset = pci_bridge_reset,
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.init = dec_21154_initfn,
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.exit = pci_bridge_exitfn,
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.config_write = pci_bridge_write_config,
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.is_bridge = 1,
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};
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PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
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{
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PCIDevice *dev;
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PCIBridge *br;
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dev = pci_create_multifunction(parent_bus, devfn, false,
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"dec-21154-p2p-bridge");
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br = DO_UPCAST(PCIBridge, dev, dev);
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pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
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qdev_init_nofail(&dev->qdev);
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return pci_bridge_get_sec_bus(br);
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}
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static int pci_dec_21154_init_device(SysBusDevice *dev)
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{
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DECState *s;
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int pci_mem_config, pci_mem_data;
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s = FROM_SYSBUS(DECState, dev);
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pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
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DEVICE_LITTLE_ENDIAN);
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pci_mem_data = pci_host_data_register_mmio(&s->host_state,
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DEVICE_LITTLE_ENDIAN);
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sysbus_init_mmio(dev, 0x1000, pci_mem_config);
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sysbus_init_mmio(dev, 0x1000, pci_mem_data);
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return 0;
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}
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static int dec_21154_pci_host_init(PCIDevice *d)
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{
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/* PCI2PCI bridge same values as PearPC - check this */
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pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_DEC);
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pci_config_set_device_id(d->config, PCI_DEVICE_ID_DEC_21154);
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pci_set_byte(d->config + PCI_REVISION_ID, 0x02);
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pci_config_set_class(d->config, PCI_CLASS_BRIDGE_PCI);
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return 0;
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}
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static PCIDeviceInfo dec_21154_pci_host_info = {
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.qdev.name = "dec-21154",
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.qdev.size = sizeof(PCIDevice),
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.init = dec_21154_pci_host_init,
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.is_bridge = 1,
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};
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static void dec_register_devices(void)
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{
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sysbus_register_dev("dec-21154", sizeof(DECState),
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pci_dec_21154_init_device);
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pci_qdev_register(&dec_21154_pci_host_info);
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pci_qdev_register(&dec_21154_pci_bridge_info);
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}
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device_init(dec_register_devices)
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