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/*
* QEMU Simba PCI bridge
*
* Copyright (c) 2006 Fabrice Bellard
* Copyright (c) 2012,2013 Artyom Tarasenko
* Copyright (c) 2018 Mark Cave-Ayland
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "hw/pci/pci.h"
#include "hw/pci/pci_bridge.h"
#include "hw/pci/pci_bus.h"
#include "hw/pci-bridge/simba.h"
/*
* Chipset docs:
* APB: "Advanced PCI Bridge (APB) User's Manual",
* http://www.sun.com/processors/manuals/805-1251.pdf
*/
static void simba_pci_bridge_realize(PCIDevice *dev, Error **errp)
{
/*
* command register:
* According to PCI bridge spec, after reset
* bus master bit is off
* memory space enable bit is off
* According to manual (805-1251.pdf).
* the reset value should be zero unless the boot pin is tied high
* (which is true) and thus it should be PCI_COMMAND_MEMORY.
*/
SimbaPCIBridge *br = SIMBA_PCI_BRIDGE(dev);
pci_bridge_initfn(dev, TYPE_PCI_BUS);
pci_set_word(dev->config + PCI_COMMAND, PCI_COMMAND_MEMORY);
pci_set_word(dev->config + PCI_STATUS,
PCI_STATUS_FAST_BACK | PCI_STATUS_66MHZ |
PCI_STATUS_DEVSEL_MEDIUM);
/* Allow 32-bit IO addresses */
pci_set_word(dev->config + PCI_IO_BASE, PCI_IO_RANGE_TYPE_32);
pci_set_word(dev->config + PCI_IO_LIMIT, PCI_IO_RANGE_TYPE_32);
pci_set_word(dev->wmask + PCI_IO_BASE_UPPER16, 0xffff);
pci_set_word(dev->wmask + PCI_IO_LIMIT_UPPER16, 0xffff);
pci_bridge_update_mappings(PCI_BRIDGE(br));
}
static void simba_pci_bridge_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->realize = simba_pci_bridge_realize;
k->exit = pci_bridge_exitfn;
k->vendor_id = PCI_VENDOR_ID_SUN;
k->device_id = PCI_DEVICE_ID_SUN_SIMBA;
k->revision = 0x11;
k->config_write = pci_bridge_write_config;
k->is_bridge = true;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->reset = pci_bridge_reset;
dc->vmsd = &vmstate_pci_device;
}
static const TypeInfo simba_pci_bridge_info = {
.name = TYPE_SIMBA_PCI_BRIDGE,
.parent = TYPE_PCI_BRIDGE,
.class_init = simba_pci_bridge_class_init,
.instance_size = sizeof(SimbaPCIBridge),
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void simba_register_types(void)
{
type_register_static(&simba_pci_bridge_info);
}
type_init(simba_register_types)
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