[edk2-devel] [PATCH 3/3] Platform/RaspberryPi/AcpiTables: Correct _DMA consumer

[Samer El-Haj-Mahmoud]

+Ard's new e-mail address

> -----Original Message-----
> From: Pete Batard <pete at akeo.ie>
> Sent: Thursday, April 8, 2021 5:48 AM
> To: Jeremy Linton <Jeremy.Linton at arm.com>; devel at edk2.groups.io
> Cc: Ard Biesheuvel <Ard.Biesheuvel at arm.com>; leif at nuviainc.com; Samer
> El-Haj-Mahmoud <Samer.El-Haj-Mahmoud at arm.com>; Andrei Warkentin
> (awarkentin at vmware.com) <awarkentin at vmware.com>
> Subject: Re: [PATCH 3/3] Platform/RaspberryPi/AcpiTables: Correct _DMA
> consumer
>
> On 2021.04.08 06:58, Jeremy Linton wrote:
> > Bridge devices should be marked as producers so that their children
> > can consume the resources. In linux if this isn't true then the
> > translation gets ignored and the DMA values are incorrect. This fixes
> > DMA on all the devices that need a translation.
> >
> > Signed-off-by: Jeremy Linton <jeremy.linton at arm.com>
> > ---
> >   Platform/RaspberryPi/AcpiTables/Dsdt.asl | 2 +-
> >   Platform/RaspberryPi/AcpiTables/Emmc.asl | 2 +-
> >   2 files changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/Platform/RaspberryPi/AcpiTables/Dsdt.asl
> > b/Platform/RaspberryPi/AcpiTables/Dsdt.asl
> > index d116f965e1..32cd5fc9f9 100644
> > --- a/Platform/RaspberryPi/AcpiTables/Dsdt.asl
> > +++ b/Platform/RaspberryPi/AcpiTables/Dsdt.asl
> > @@ -205,7 +205,7 @@ DefinitionBlock ("Dsdt.aml", "DSDT", 5, "RPIFDN",
> "RPI", 2)
> >           // Only the first GB is available.
> >
> >           // Bus 0xC0000000 -> CPU 0x00000000.
> >
> >           //
> >
> > -        QWordMemory (ResourceConsumer,
> >
> > +        QWordMemory (ResourceProducer,
> >
> >             ,
> >
> >             MinFixed,
> >
> >             MaxFixed,
> >
> > diff --git a/Platform/RaspberryPi/AcpiTables/Emmc.asl
> > b/Platform/RaspberryPi/AcpiTables/Emmc.asl
> > index 179dd3ecdb..0fbc2a79ea 100644
> > --- a/Platform/RaspberryPi/AcpiTables/Emmc.asl
> > +++ b/Platform/RaspberryPi/AcpiTables/Emmc.asl
> > @@ -32,7 +32,7 @@ DefinitionBlock (__FILE__, "SSDT", 5, "RPIFDN",
> "RPI4EMMC", 2)
> >         }
> >
> >
> >
> >         Name (_DMA, ResourceTemplate() {
> >
> > -        QWordMemory (ResourceConsumer,
> >
> > +        QWordMemory (ResourceProducer,
> >
> >             ,
> >
> >             MinFixed,
> >
> >             MaxFixed,
> >
>
> Reviewed-by: Pete Batard <pete at akeo.ie>
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