8ea6091f50
First phase in introducing ACPI support to SN. In this phase, when running with an ACPI capable PROM, the DSDT will define the root busses and all SN nodes (SGIHUB, SGITIO). An ACPI bus driver will be registered for the node devices, with the acpi_pci_root_driver being used for the root busses. An ACPI vendor descriptor is now used to pass platform specific information for both nodes and busses, eliminating the need for the current SAL calls. Also, with ACPI support, SN fixup code is no longer needed to initiate the PCI bus scans, as the acpi_pci_root_driver does that. However, to maintain backward compatibility with non-ACPI capable PROMs, none of the current 'fixup' code can been deleted, though much restructuring has been done. For example, the bulk of the code in io_common.c is relocated code that is now common regardless of what PROM is running, while io_acpi_init.c and io_init.c contain routines specific to an ACPI or non ACPI capable PROM respectively. A new pci bus fixup platform vector has been created to provide a hook for invoking platform specific bus fixup from pcibios_fixup_bus(). The size of io_space[] has been increased to support systems with large IO configurations. Signed-off-by: John Keller <jpk@sgi.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1992 - 1997, 2000-2006 Silicon Graphics, Inc. All rights reserved.
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*/
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#ifndef _ASM_IA64_SN_PCI_PCIDEV_H
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#define _ASM_IA64_SN_PCI_PCIDEV_H
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#include <linux/pci.h>
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/*
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* In ia64, pci_dev->sysdata must be a *pci_controller. To provide access to
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* the pcidev_info structs for all devices under a controller, we keep a
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* list of pcidev_info under pci_controller->platform_data.
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*/
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struct sn_platform_data {
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void *provider_soft;
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struct list_head pcidev_info;
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};
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#define SN_PLATFORM_DATA(busdev) \
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((struct sn_platform_data *)(PCI_CONTROLLER(busdev)->platform_data))
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#define SN_PCIDEV_INFO(dev) sn_pcidev_info_get(dev)
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/*
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* Given a pci_bus, return the sn pcibus_bussoft struct. Note that
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* this only works for root busses, not for busses represented by PPB's.
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*/
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#define SN_PCIBUS_BUSSOFT(pci_bus) \
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((struct pcibus_bussoft *)(SN_PLATFORM_DATA(pci_bus)->provider_soft))
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#define SN_PCIBUS_BUSSOFT_INFO(pci_bus) \
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((struct pcibus_info *)(SN_PLATFORM_DATA(pci_bus)->provider_soft))
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/*
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* Given a struct pci_dev, return the sn pcibus_bussoft struct. Note
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* that this is not equivalent to SN_PCIBUS_BUSSOFT(pci_dev->bus) due
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* due to possible PPB's in the path.
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*/
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#define SN_PCIDEV_BUSSOFT(pci_dev) \
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(SN_PCIDEV_INFO(pci_dev)->pdi_host_pcidev_info->pdi_pcibus_info)
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#define SN_PCIDEV_BUSPROVIDER(pci_dev) \
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(SN_PCIDEV_INFO(pci_dev)->pdi_provider)
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#define PCIIO_BUS_NONE 255 /* bus 255 reserved */
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#define PCIIO_SLOT_NONE 255
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#define PCIIO_FUNC_NONE 255
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#define PCIIO_VENDOR_ID_NONE (-1)
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struct pcidev_info {
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u64 pdi_pio_mapped_addr[7]; /* 6 BARs PLUS 1 ROM */
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u64 pdi_slot_host_handle; /* Bus and devfn Host pci_dev */
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struct pcibus_bussoft *pdi_pcibus_info; /* Kernel common bus soft */
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struct pcidev_info *pdi_host_pcidev_info; /* Kernel Host pci_dev */
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struct pci_dev *pdi_linux_pcidev; /* Kernel pci_dev */
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struct sn_irq_info *pdi_sn_irq_info;
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struct sn_pcibus_provider *pdi_provider; /* sn pci ops */
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struct pci_dev *host_pci_dev; /* host bus link */
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struct list_head pdi_list; /* List of pcidev_info */
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};
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extern void sn_irq_fixup(struct pci_dev *pci_dev,
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struct sn_irq_info *sn_irq_info);
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extern void sn_irq_unfixup(struct pci_dev *pci_dev);
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extern struct pcidev_info * sn_pcidev_info_get(struct pci_dev *);
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extern void sn_bus_store_sysdata(struct pci_dev *dev);
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extern void sn_bus_free_sysdata(void);
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extern void sn_generate_path(struct pci_bus *pci_bus, char *address);
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extern void sn_pci_fixup_slot(struct pci_dev *dev);
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extern void sn_pci_unfixup_slot(struct pci_dev *dev);
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extern void sn_irq_lh_init(void);
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#endif /* _ASM_IA64_SN_PCI_PCIDEV_H */
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