May be this part of codes helps you
----------------
// Scan PCI handles
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiPciIoProtocolGuid,
NULL,
&HandleCount,
&HandleArray
);
if (!EFI_ERROR (Status)) {
for (Index = 0; Index < HandleCount; Index++) {
Status = gBS->HandleProtocol (
HandleArray[Index],
&gEfiPciIoProtocolGuid,
(VOID **)&PciIo
);
if (!EFI_ERROR (Status)) {
// Read PCI BUS
Status = PciIo->GetLocation (PciIo, &Segment, &Bus, &Device, &Function);
Status = PciIo->Pci.Read (
PciIo,
EfiPciIoWidthUint32,
0,
sizeof (Pci) / sizeof (UINT32),
&Pci
);
Print(L"PCI (%02x|%02x:%02x.%02x) : %04x %04x class=%02x%02x%02x\n",
Segment, Bus, Device, Function,
Pci.Hdr.VendorId, Pci.Hdr.DeviceId,
Pci.Hdr.ClassCode[2], Pci.Hdr.ClassCode[1], Pci.Hdr.ClassCode[0]);
----------------
The same is possible for ExtScsiPassTru protocol
Regards,
Sergey
On 06.09.2013, at 9:40, David F. <[email protected]> wrote:
> Yes, but to do it right you really need the SCSI Pass Through Interface to
> talk directly with the device as you may need to send setup or blank
> commands, etc... Also for ATA devices, be nice for the various commands
> dealing with their command set.
>
>
>
>
>
> On Thu, Sep 5, 2013 at 7:42 PM, Sergey Isakov <[email protected]> wrote:
> Hi David,
> I am not understanding what are you going to do. How did you propose to burn
> DVD in UEFI mode? Do you have such UEFI application to burn DVD?
> Sergey.
>
> On 06.09.2013, at 6:22, David F. <[email protected]> wrote:
>
> > Well, without any passthru support, I'm not sure how I'm, as an
> > application, supposed to get the device names of the various hard drives
> > and dvd drives in the system? Also, how you would be able to burn a CD/DVD
> > and send the various commands to setup for the burn. I see the Visual
> > BIOS on the system has all the name, so there must be a way without
> > essentially turning off all UEFI services and writing a raw DOS like
> > program to directly program the SATA/PATA controllers like the old days?
> > Strange?
> >
> > Does anyone have the answer??
> >
> > TIA!!
> >
> > ------------------------------------------------------------------------------
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>
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Discover the easy way to master current and previous Microsoft technologies
and advance your career. Get an incredible 1,500+ hours of step-by-step
tutorial videos with LearnDevNow. Subscribe today and save!
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