mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-16 20:02:35 +03:00
138 lines
4.0 KiB
PHP
138 lines
4.0 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2012. 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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; PCI Bus defines
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PCI_HEADER_TYPE = 0x0e ; 8 bit
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PCI_BASE_ADDRESS_0 = 0x10 ; 32 bit
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PCI_BASE_ADDRESS_5 = 0x24 ; 32 bits
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PCI_BASE_ADDRESS_SPACE_IO = 0x01
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PCI_VENDOR_ID = 0x00 ; 16 bit
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PCI_BASE_ADDRESS_IO_MASK = 0xFFFFFFFC
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; PCI programming
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PCI_REG_COMMAND = 0x4 ; command register
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PCI_REG_STATUS = 0x6 ; status register
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PCI_REG_LATENCY = 0xd ; latency timer register
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PCI_REG_CAP_PTR = 0x34 ; capabilities pointer
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PCI_REG_CAPABILITY_ID = 0x0 ; capapility ID in pm register block
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PCI_REG_PM_STATUS = 0x4 ; power management status register
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PCI_REG_PM_CTRL = 0x4 ; power management control register
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PCI_BIT_PIO = 1 ; bit0: io space control
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PCI_BIT_MMIO = 2 ; bit1: memory space control
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PCI_BIT_MASTER = 4 ; bit2: device acts as a PCI master
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macro find_io bus, dev, io {
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local .check, .inc, .got
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xor eax, eax
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mov esi, PCI_BASE_ADDRESS_0
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movzx ecx, bus
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movzx edx, dev
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.check:
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stdcall PciRead32, ecx ,edx ,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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jmp .got
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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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xor eax, eax
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.got:
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mov io, eax
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}
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macro find_mmio32 bus, dev, io {
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local .check, .inc, .got
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mov esi, PCI_BASE_ADDRESS_0
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.check:
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stdcall 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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jmp .got
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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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xor eax, eax
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.got:
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mov io, eax
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}
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macro find_irq bus, dev, irq {
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push eax edx ecx
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movzx ecx, bus
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movzx edx, dev
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stdcall PciRead8, ecx ,edx ,0x3c ; 0x3c is the offset where irq can be found
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mov irq, al
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pop ecx edx eax
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}
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macro find_rev bus, dev, rev {
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push eax edx ecx
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movzx ecx, bus
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movzx edx, dev
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stdcall PciRead8, ecx ,edx ,0x8
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mov rev, al
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pop ecx edx eax
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}
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macro make_bus_master bus, dev {
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movzx ecx, bus
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movzx edx, dev
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stdcall PciRead32, ecx ,edx, PCI_REG_COMMAND
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or al, PCI_BIT_MASTER
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stdcall PciWrite32, ecx, edx, PCI_REG_COMMAND, eax
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}
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macro adjust_latency bus, dev, min {
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movzx ecx, bus
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movzx edx, dev
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stdcall PciRead8, ecx ,edx, PCI_REG_LATENCY
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cmp al, min
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ja @f
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mov al, min
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stdcall PciWrite8, ecx, edx, PCI_REG_LATENCY, eax
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@@:
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}
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