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4522 hidnplayr 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                                 ;;
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;; Copyright (C) KolibriOS team 2004-2014. All rights reserved.    ;;
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;; Distributed under terms of the GNU General Public License       ;;
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;;                                                                 ;;
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;;          GNU GENERAL PUBLIC LICENSE                             ;;
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;;             Version 2, June 1991                                ;;
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;;                                                                 ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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struct  PCI_header
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        vendor_id       dw ?
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        device_id       dw ?
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        command         dw ?
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        status          dw ?
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        revision_id     db ?
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        prog_if         db ?
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        subclass        db ?
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        class_code      db ?
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        cache_line_size db ?
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        latency_timer   db ?
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        header_type     db ?
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        bist            db ?
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ends
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struct  PCI_header00    PCI_header
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        base_addr_0     dd ?
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        base_addr_1     dd ?
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        base_addr_2     dd ?
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        base_addr_3     dd ?
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        base_addr_4     dd ?
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        base_addr_5     dd ?
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        cardbus_cis_ptr dd ?
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        subsys_vendor   dw ?
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        subsys_id       dw ?
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        exp_rom_addr    dd ?
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        cap_ptr         db ?
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        reserved        rb 7
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        interrupt_line  db ?
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        interrupt_pin   db ?
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        min_grant       db ?
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        max_latency     db ?
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ends
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; Base address bits
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        PCI_BASE_ADDRESS_SPACE_IO       = 0x01
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        PCI_BASE_ADDRESS_IO_MASK        = 0xFFFFFFFC
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        PCI_BASE_ADDRESS_MEM_MASK       = 0xFFFFFFF0
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; command bits
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        PCI_CMD_PIO                     = 1             ; bit0: io space control
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        PCI_CMD_MMIO                    = 2             ; bit1: memory space control
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        PCI_CMD_MASTER                  = 4             ; bit2: device acts as a PCI master
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if used PCI_find_io
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proc PCI_find_io stdcall bus, dev
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        push    esi
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        xor     eax, eax
4532 hidnplayr 65 
        mov     esi, PCI_header00.base_addr_0
4522 hidnplayr 66 
  .check:
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        invoke  PciRead32, [bus], [dev], esi
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        test    eax, PCI_BASE_ADDRESS_IO_MASK
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        jz      .inc
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        test    eax, PCI_BASE_ADDRESS_SPACE_IO
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        jz      .inc
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        and     eax, PCI_BASE_ADDRESS_IO_MASK
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        pop     esi
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        ret
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  .inc:
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        add     esi, 4
4532 hidnplayr 78 
        cmp     esi, PCI_header00.base_addr_5
4522 hidnplayr 79 
        jbe     .check
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        pop     esi
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        xor     eax, eax
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        ret
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endp
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end if
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if used PCI_find_mmio32
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proc PCI_find_mmio32 stdcall bus, dev
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        push    esi
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        mov     esi, PCI_header00.base_addr_0
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  .check:
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        invoke  PciRead32, [bus], [dev], esi
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        test    eax, PCI_BASE_ADDRESS_SPACE_IO  ; mmio address?
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        jnz     .inc
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        test    eax, 100b       ; 64 bit?
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        jnz     .inc
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        and     eax, not 1111b
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        pop     esi
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        ret
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  .inc:
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        add     esi, 4
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        cmp     esi, PCI_header00.base_addr_5
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        jbe     .check
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        xor     eax, eax
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        pop     esi
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        ret
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endp
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end if