forked from KolibriOS/kolibrios
117 lines
3.1 KiB
PHP
117 lines
3.1 KiB
PHP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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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
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mov esi, PCI_BASE_ADDRESS_0
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.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
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cmp esi, PCI_BASE_ADDRESS_5
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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
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