Date: Sun, 6 Sep 2020 11:20:57 -0700 From: Mark Millard <marklmi@yahoo.com> To: Robert Crowston <crowston@protonmail.com> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: onboard wireless on rpi4 Message-ID: <9B62C18C-EE94-4DFE-8EA9-AC7B32966886@yahoo.com> In-Reply-To: <f1TEvkOXAVtF1YAKglflVOIyTD4kNhuWXglfpsJf-x9VfUWNflgIBk-50IO_6iv-TYoaNsgf2FPB6ennhKDvbfgMySl7WDo4swchRlE1Cn0=@protonmail.com> References: <20200904134619.GB80905@bastion.zyxst.net> <CACNAnaHRn5VGM8G6_kxj7S%2B0LQOSG3CK9=umxj74Qc5v%2BNOLeA@mail.gmail.com> <BE2FA7D2-1266-496E-B808-55204B1AB21A@yahoo.com> <5AF83D16-2432-4EA9-BC2F-373DA8BC3360@googlemail.com> <4306A90D-97B9-4DE9-A05A-A91B6F4A587F@yahoo.com> <sinTekBDB_YOboAoJU0Uld7IaGBlIJ68dPgxuO3kcUuZpTH9KxyTquRgPxU7-0qlvofrr_8HzdCbNL-nRNaT6-OeIyIuLUUvYSGEwEzRVbc=@protonmail.com> <8037E5D3-E89E-4AED-8FFE-43D9D83B2BD3@yahoo.com> <CANCZdfqZZHRQFD2W5MqSpyR-eFGRABN-X37yRBcRNcxBzdtsPg@mail.gmail.com> <24CED3CF-6624-4CE3-A21C-D4BAD88E8812@googlemail.com> <f1TEvkOXAVtF1YAKglflVOIyTD4kNhuWXglfpsJf-x9VfUWNflgIBk-50IO_6iv-TYoaNsgf2FPB6ennhKDvbfgMySl7WDo4swchRlE1Cn0=@protonmail.com>
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On 2020-Sep-6, at 08:20, Robert Crowston via freebsd-arm <freebsd-arm at = freebsd.org> wrote: > That's interesting: OpenBSD is allowing only the lowest 1 GB of memory = for DMA; the documentation I obtained suggests the first 3 GB should be = accessible. I am experimenting with this new lower bound. https://rpi4-uefi.dev/tag/netbsd/ reports: QUOTE NetBSD also is the only OS today to fully support ACPI _DMA descriptors = for describing DMA translations/constraints. This is very important for = supporting Pi and Pi-like platforms via straight-up ACPI and without = platform DMA quirks.=20 END QUOTE > =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 = Original Message =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2= =80=90 > On Sunday, 6 September 2020 13:40, Klaus Cucinauomo <maciphone2 at = googlemail.com> wrote: >=20 >>> Am 06.09.2020 um 06:40 schrieb Warner Losh <imp@bsdimp.com>: >>>=20 >>> I thought I read they added the busdma constraints we are missing=E2=80= =A6 >>>=20 >>> Warner >>=20 >> Yes, for OpenBSD I thought the same , to be a little more specific : >>=20 >> = https://github.com/openbsd/src/commit/aae395593ca184a639a1c158ceb4b2132d85= e7c2 >>=20 >> = https://github.com/openbsd/src/commit/a88d14946aed5dc48e4e700486795c8d1715= 76d0 >=20 =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)
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