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0208def1ca
The lower bits of base/limit registers is RO and shouldn't be zero cleared on reset. This patch fixes it. In fact, the default value of base/limit registers aren't specified in the spec. And some bridges disable forwarding on reset instead of zeroing base/limit registers. So introduce one function to disable bridge forwarding so that such bridges can use it. It will be used later. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/*
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* QEMU PCI bridge
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*
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* Copyright (c) 2004 Fabrice Bellard
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*
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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 2 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* split out pci bus specific stuff from pci.[hc] to pci_bridge.[hc]
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* Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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*/
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#ifndef QEMU_PCI_BRIDGE_H
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#define QEMU_PCI_BRIDGE_H
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#include "pci.h"
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int pci_bridge_ssvid_init(PCIDevice *dev, uint8_t offset,
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uint16_t svid, uint16_t ssid);
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PCIDevice *pci_bridge_get_device(PCIBus *bus);
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PCIBus *pci_bridge_get_sec_bus(PCIBridge *br);
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pcibus_t pci_bridge_get_base(const PCIDevice *bridge, uint8_t type);
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pcibus_t pci_bridge_get_limit(const PCIDevice *bridge, uint8_t type);
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void pci_bridge_write_config(PCIDevice *d,
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uint32_t address, uint32_t val, int len);
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void pci_bridge_disable_base_limit(PCIDevice *dev);
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void pci_bridge_reset_reg(PCIDevice *dev);
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void pci_bridge_reset(DeviceState *qdev);
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int pci_bridge_initfn(PCIDevice *pci_dev);
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int pci_bridge_exitfn(PCIDevice *pci_dev);
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/*
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* before qdev initialization(qdev_init()), this function sets bus_name and
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* map_irq callback which are necessry for pci_bridge_initfn() to
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* initialize bus.
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*/
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void pci_bridge_map_irq(PCIBridge *br, const char* bus_name,
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pci_map_irq_fn map_irq);
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#endif /* QEMU_PCI_BRIDGE_H */
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/*
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* Local variables:
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* c-indent-level: 4
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tab-mode: nil
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* End:
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*/
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