Thanks for the answers Feng and Isakov.
On my first message I din't put my hole function here.
The variables you mentioned were already declared and initialized this way:
EFI_STATUS Status = EFI_SUCCESS;
EFI_ATA_PASS_THRU_PROTOCOL *ataProtocol;
UINT16 Port;
UINT16 PortMultiplierPort;
EFI_HANDLE *HandleBuffer = (EFI_HANDLE *) NULL;
UINTN HandleCount = 0;
UINTN HandleIndex = 0;
Port = 0xFFFF;
PortMultiplierPort = 0xFFFF;
I think probably the problem is what Feng told.
I have two questions.
First.
I've searched for a command to check all available protocols on a computer.
I didn't find anything.
Does any of you know if is there a command that do this kind of magic ?
Some comand like: shell:> list_all_available_protocols_on_this_computer
(with a better name)
Second.
As Feng told, even if the shell main screen display the HDDs thare is a
possibility of not having access to the ata_pass_thru_protocol. But how the
HDDs are recognized by the system ?
Thanks again everyone.
Rafael R. Machado
2012/10/18 Sergey Isakov <isakov...@bk.ru>
> Hi Rafael,
>
> Set
> Port = 0xFFFF;
> before
> do {
>
> Regards,
> Sergey
>
> On 18.10.2012, at 0:09, Rafael Machado <rafaelrodrigues.mach...@gmail.com>
> wrote:
>
> Hi everyone.
> I'm having a problem with an sample code I've developed.
> This code should display the ports and Multiports of the Sata hdds that
> are connected to the board.
> The strange thing is that the HDD device paths are displayed at uefi main
> screen, but the following code does not return any port.
> Another strange thig is that this code works correctly on a notebook.
> The computer that it doesn't work is a server with 2 sata hdds connected
> to a backplane that is connected to the sata entries of the motherboard
> with AHCI mode enabled.
>
>
> Print(L"*****************\n");
> Print(L"*Ata Device Path*\n", HandleCount);
> Print(L"*****************\n");
>
> Status = gBS->LocateHandleBuffer(ByProtocol,
> &gEfiAtaPassThruProtocolGuid,
> NULL,
> &HandleCount,
> &HandleBuffer);
>
>
> // Checks if happen some error in the handle localization
> if (Status == EFI_SUCCESS)
> {
>
> Print(L"gEfiAtaPassThruProtocolGuid HandleCount: %d\n", HandleCount);
>
> // Loop to walk in the handles
> for (HandleIndex = 0; HandleIndex < HandleCount; HandleIndex ++)
> {
> Print(L"HandleIndex: %d\n", HandleIndex);
>
> Status = gBS->OpenProtocol(HandleBuffer[HandleIndex],
> &gEfiAtaPassThruProtocolGuid,
> (VOID **) &ataProtocol,
> ImageHandle,
> NULL,
> EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
>
> if(EFI_ERROR(Status))
> {
> Print(L"Status: %x\n", Status);
> }
>
>
> do {
> Status = ataProtocol->GetNextPort(ataProtocol,
> &Port);
>
> if(!EFI_ERROR(Status))
> {
> Status = ataProtocol->GetNextDevice(ataProtocol,
> Port,
> &PortMultiplierPort);
>
> if(!EFI_ERROR(Status))
> {
> Print(L"Port: %d\n",Port);
> Print(L"PortMultiplierPort: %d\n", PortMultiplierPort);
> Print(L"-----------------------------------\n");
> }
> }
>
> }while(!EFI_ERROR(Status));
>
> }
> }
> else
> {
> Print(L"Status: %x\n", Status);
> }
>
>
> Any idea ?
>
> Thanks everyone.
>
> Rafael R. Machado
>
>
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