release/src-rt-6.x.4708/linux/linux-2.6.36/arch/ia64/include/asm/sn/pcibus_provider_defs.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
   7  */
   8 #ifndef _ASM_IA64_SN_PCI_PCIBUS_PROVIDER_H
   9 #define _ASM_IA64_SN_PCI_PCIBUS_PROVIDER_H
  10
  11 /*
  12  * SN pci asic types.  Do not ever renumber these or reuse values.  The
  13  * values must agree with what prom thinks they are.
  14  */
  15
  16 #define PCIIO_ASIC_TYPE_UNKNOWN 0
  17 #define PCIIO_ASIC_TYPE_PPB     1
  18 #define PCIIO_ASIC_TYPE_PIC     2
  19 #define PCIIO_ASIC_TYPE_TIOCP   3
  20 #define PCIIO_ASIC_TYPE_TIOCA   4
  21 #define PCIIO_ASIC_TYPE_TIOCE   5
  22
  23 #define PCIIO_ASIC_MAX_TYPES    6
  24
  25 /*
  26  * Common pciio bus provider data.  There should be one of these as the
  27  * first field in any pciio based provider soft structure (e.g. pcibr_soft
  28  * tioca_soft, etc).
  29  */
  30
  31 struct pcibus_bussoft {
  32         u32             bs_asic_type;   /* chipset type */
  33         u32             bs_xid;         /* xwidget id */
  34         u32             bs_persist_busnum; /* Persistent Bus Number */
  35         u32             bs_persist_segment; /* Segment Number */
  36         u64             bs_legacy_io;   /* legacy io pio addr */
  37         u64             bs_legacy_mem;  /* legacy mem pio addr */
  38         u64             bs_base;        /* widget base */
  39         struct xwidget_info     *bs_xwidget_info;
  40 };
  41
  42 struct pci_controller;
  43 /*
  44  * SN pci bus indirection
  45  */
  46
  47 struct sn_pcibus_provider {
  48         dma_addr_t      (*dma_map)(struct pci_dev *, unsigned long, size_t, int flags);
  49         dma_addr_t      (*dma_map_consistent)(struct pci_dev *, unsigned long, size_t, int flags);
  50         void            (*dma_unmap)(struct pci_dev *, dma_addr_t, int);
  51         void *          (*bus_fixup)(struct pcibus_bussoft *, struct pci_controller *);
  52         void            (*force_interrupt)(struct sn_irq_info *);
  53         void            (*target_interrupt)(struct sn_irq_info *);
  54 };
  55
  56 /*
  57  * Flags used by the map interfaces
  58  * bits 3:0 specifies format of passed in address
  59  * bit  4   specifies that address is to be used for MSI
  60  */
  61
  62 #define SN_DMA_ADDRTYPE(x)      ((x) & 0xf)
  63 #define     SN_DMA_ADDR_PHYS    1       /* address is an xio address. */
  64 #define     SN_DMA_ADDR_XIO     2       /* address is phys memory */
  65 #define SN_DMA_MSI              0x10    /* Bus address is to be used for MSI */
  66
  67 extern struct sn_pcibus_provider *sn_pci_provider[];
  68 #endif                          /* _ASM_IA64_SN_PCI_PCIBUS_PROVIDER_H */