Hi Feng Thanks for the answer. Just to explain better my scenario.
What I need to do is execute some ata commands, like read verify sector, this is done sending ata commands to some Port / Multiplier port, but in case this device has a Block Io protocol, I need to use this protocol instead of sending a specific ata command (so my application will be more generic) This is why I need to know if a specific ata device has an associated block io protocol, based on its position (Port/Multiplier port location) If my explanation is not that clear I can try to explain in another way. Thanks a lot for the answer. Rafael R. Machado 2014-10-28 22:55 GMT-02:00 Tian, Feng <feng.t...@intel.com>: > Rafael, > > > > Why don’t you directly locate all handles at which BlockIo protocols are > installed? After you get these handles, you can get device path from these > handles to know which one is you want to access. > > > > Thanks > > Feng > > > > *From:* Rafael Machado [mailto:rafaelrodrigues.mach...@gmail.com] > *Sent:* Monday, October 27, 2014 18:40 > *To:* edk2-devel > *Subject:* [edk2] Get BlockIo protocol from Ata Device based on Port and > Multiplier Port > > > > Hi everyone. > > > > I have a system, that has a Storage device. > > This device can be detected at Port 0, Multiplier 0 by the > EFI_ATA_PASS_THRU_PROTOCOL.GetNextDevice() > > > > *typedef EFI_STATUS* > > *(EFIAPI *EFI_ATA_PASS_THRU_GET_NEXT_DEVICE) (* > > *IN EFI_ATA_PASS_THRU_PROTOCOL *This,* > > *IN UINT16 Port,* > > *IN OUT UINT16 *PortMultiplierPort* > > *);* > > > > Now I need to know the EFI_BLOCK_IO_PROTOCOL "instance" that I need to use > to access this device. > > Is there a way to do this ? > > > > Thanks and Regards > > Rafael R. Machado > > > ------------------------------------------------------------------------------ > > _______________________________________________ > edk2-devel mailing list > edk2-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/edk2-devel > >
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