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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                                 ;;
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;;                                                                 ;;
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;; Copyright (C) KolibriOS team 2010-2021. All rights reserved.    ;;
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;; Copyright (C) KolibriOS team 2010-2024. 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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;;  rhine.asm                                                      ;;
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;;  rhine.asm                                                      ;;
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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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  .nextdevice:
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  .nextdevice:
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        mov     ebx, [esi]
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        mov     ebx, [esi]
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        cmp     al, byte[ebx + device.pci_bus]
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        cmp     al, byte[ebx + device.pci_bus]
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        jne     @f
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        jne     @f
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        cmp     ah, byte[ebx + device.pci_dev]
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        cmp     ah, byte[ebx + device.pci_dev]
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        je      .find_devicenum                         ; Device is already loaded, let's find it's device number
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        je      .find_devicenum                         ; Device is already loaded, let's find its device number
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       @@:
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       @@:
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        add     esi, 4
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        add     esi, 4
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        loop    .nextdevice
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        loop    .nextdevice
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; This device doesn't have its own eth_device structure yet, lets create one
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; 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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        cmp     [devices], MAX_DEVICES                  ; First check if the driver can handle one more card
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        cmp     [devices], MAX_DEVICES                  ; First check if the driver can handle one more card
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        mov     ecx, sizeof.rx_head
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        mov     ecx, sizeof.rx_head
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        mul     ecx
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        mul     ecx
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        lea     edi, [ebx + device.rx_ring]
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        lea     edi, [ebx + device.rx_ring]
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        add     edi, eax
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        add     edi, eax
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; Check it's status
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; Check its status
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        test    [edi + rx_head.status], RX_SBITS_OWN_BIT
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        test    [edi + rx_head.status], RX_SBITS_OWN_BIT
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        jnz     .not_RX
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        jnz     .not_RX
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; get length
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; get length
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        mov     ecx, [edi + rx_head.status]
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        mov     ecx, [edi + rx_head.status]
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        and     ecx, RX_SBITS_FRAME_LENGTH
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        and     ecx, RX_SBITS_FRAME_LENGTH
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        shr     ecx, 16
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        shr     ecx, 16
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        sub     ecx, 4                          ; We dont want CRC
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        sub     ecx, 4                          ; We don't want CRC
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; Update stats
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; Update stats
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        add     dword [ebx + device.bytes_rx], ecx
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        add     dword [ebx + device.bytes_rx], ecx