pcibus_provider_defs.h

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/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
 */
#ifndef _ASM_IA64_SN_PCI_PCIBUS_PROVIDER_H
#define _ASM_IA64_SN_PCI_PCIBUS_PROVIDER_H

/*
 * SN pci asic types.  Do not ever renumber these or reuse values.  The
 * values must agree with what prom thinks they are.
 */

#define PCIIO_ASIC_TYPE_UNKNOWN 0
#define PCIIO_ASIC_TYPE_PPB 1
#define PCIIO_ASIC_TYPE_PIC 2
#define PCIIO_ASIC_TYPE_TIOCP   3
#define PCIIO_ASIC_TYPE_TIOCA   4
#define PCIIO_ASIC_TYPE_TIOCE   5

#define PCIIO_ASIC_MAX_TYPES    6

/*
 * Common pciio bus provider data.  There should be one of these as the
 * first field in any pciio based provider soft structure (e.g. pcibr_soft
 * tioca_soft, etc).
 */

struct pcibus_bussoft {
    u32     bs_asic_type;   /* chipset type */
    u32     bs_xid;     /* xwidget id */
    u32     bs_persist_busnum; /* Persistent Bus Number */
    u32     bs_persist_segment; /* Segment Number */
    u64     bs_legacy_io;   /* legacy io pio addr */
    u64     bs_legacy_mem;  /* legacy mem pio addr */
    u64     bs_base;    /* widget base */
    struct xwidget_info *bs_xwidget_info;
};

struct pci_controller;
/*
 * SN pci bus indirection
 */

struct sn_pcibus_provider {
    dma_addr_t  (*dma_map)(struct pci_dev *, unsigned long, size_t, int flags);
    dma_addr_t  (*dma_map_consistent)(struct pci_dev *, unsigned long, size_t, int flags);
    void        (*dma_unmap)(struct pci_dev *, dma_addr_t, int);
    void *      (*bus_fixup)(struct pcibus_bussoft *, struct pci_controller *);
    void        (*force_interrupt)(struct sn_irq_info *);
    void        (*target_interrupt)(struct sn_irq_info *);
};

/*
 * Flags used by the map interfaces
 * bits 3:0 specifies format of passed in address
 * bit  4   specifies that address is to be used for MSI
 */

#define SN_DMA_ADDRTYPE(x)  ((x) & 0xf)
#define     SN_DMA_ADDR_PHYS    1   /* address is an xio address. */
#define     SN_DMA_ADDR_XIO 2   /* address is phys memory */
#define SN_DMA_MSI      0x10    /* Bus address is to be used for MSI */

extern struct sn_pcibus_provider *sn_pci_provider[];
#endif              /* _ASM_IA64_SN_PCI_PCIBUS_PROVIDER_H */