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Rev 2981 Rev 3155
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                                    ;;
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;;                                                                    ;;
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;; Copyright (C) KolibriOS team 2004-2012. All rights reserved.       ;;
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;; Copyright (C) KolibriOS team 2004-2013. All rights reserved.       ;;
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;; Distributed under terms of the GNU General Public License          ;;
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;; Distributed under terms of the GNU General Public License          ;;
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;;                                                                    ;;
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;;                                                                    ;;
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;;  Ethernet driver for KolibriOS                                     ;;
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;;  Ethernet driver for KolibriOS                                     ;;
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;;  This is an adaptation of MenuetOS driver with minimal changes.    ;;
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;;  This is an adaptation of MenuetOS driver with minimal changes.    ;;
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;;  Changes were made by CleverMouse. Original copyright follows.     ;;
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;;  Changes were made by CleverMouse. Original copyright follows.     ;;
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        test    eax, eax        ; check for SRV_GETVERSION
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        test    eax, eax        ; check for SRV_GETVERSION
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        jnz     @f
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        jnz     @f
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; 3. This is SRV_GETVERSION request, no input, 4 bytes output, API_VERSION.
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; 3. This is SRV_GETVERSION request, no input, 4 bytes output, API_VERSION.
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; 3a. Output size must be at least 4 bytes.
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; 3a. Output size must be at least 4 bytes.
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        cmp     [IOCTL.out_size], 4
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        cmp     [IOCTL.out_size], 4
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        jl      .fail
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        jb      .fail
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; 3b. Write result to the output buffer.
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; 3b. Write result to the output buffer.
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        mov     eax, [IOCTL.output]
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        mov     eax, [IOCTL.output]
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        mov     [eax], dword API_VERSION
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        mov     [eax], dword API_VERSION
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; 3c. Return success.
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; 3c. Return success.
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        xor     eax, eax
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        xor     eax, eax
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        jnz     .fail
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        jnz     .fail
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; 4. This is SRV_HOOK request, input defines the device to hook, no output.
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; 4. This is SRV_HOOK request, input defines the device to hook, no output.
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; 4a. The driver works only with PCI devices,
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; 4a. The driver works only with PCI devices,
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;       so input must be at least 3 bytes long.
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;       so input must be at least 3 bytes long.
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        cmp     [IOCTL.inp_size], 3
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        cmp     [IOCTL.inp_size], 3
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        jl      .fail
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        jb      .fail
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; 4b. First byte of input is bus type, 1 stands for PCI.
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; 4b. First byte of input is bus type, 1 stands for PCI.
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        mov     eax, [IOCTL.input]
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        mov     eax, [IOCTL.input]
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        cmp     byte [eax], 1
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        cmp     byte [eax], 1
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        jne     .fail
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        jne     .fail
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; 4c. Second and third bytes of the input define the device: bus and dev.
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; 4c. Second and third bytes of the input define the device: bus and dev.
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        loop    .nextdevice
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        loop    .nextdevice
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; 4e. This device doesn't have its own eth_device structure yet, let's create one
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; 4e. This device doesn't have its own eth_device structure yet, let's create one
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  .firstdevice:
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  .firstdevice:
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; 4f. Check that we have place for new device.
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; 4f. Check that we have place for new device.
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        cmp     [devices], MAX_DEVICES
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        cmp     [devices], MAX_DEVICES
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        jge     .fail
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        jae     .fail
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; 4g. Allocate memory for device descriptor and receive+transmit buffers.
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; 4g. Allocate memory for device descriptor and receive+transmit buffers.
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; 4h. Zero the structure.
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; 4h. Zero the structure.
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        allocate_and_clear ebx, device.size, .fail
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        allocate_and_clear ebx, device.size, .fail
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; 4i. Save PCI coordinates
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; 4i. Save PCI coordinates
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        mov     eax, [IOCTL.input]
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        mov     eax, [IOCTL.input]