Date: Sun, 6 Sep 2020 13:23:25 -0500 From: Mike Karels <mike@karels.net> To: freebsd-arm@freebsd.org Subject: Re: onboard wireless on rpi4 Message-ID: <32d5ad15-291c-4cf0-533a-0e6e4cb78bb7@karels.net> 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 2020-09-06 10:20, Robert Crowston via freebsd-arm 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. The ftb has this under soc: dma-ranges = <0xc0000000 0x0 0x0 0x3c000000>; At one point, I looked up how to decode this. I thought it specified a window in which DMA is not allowed, but I'm not sure now. Mike > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > On Sunday, 6 September 2020 13:40, Klaus Cucinauomo <maciphone2@googlemail.com> wrote: > >>> Am 06.09.2020 um 06:40 schrieb Warner Losh <imp@bsdimp.com>: >>> >>> I thought I read they added the busdma constraints we are missing… >>> >>> Warner >> Yes, for OpenBSD I thought the same , to be a little more specific : >> >> https://github.com/openbsd/src/commit/aae395593ca184a639a1c158ceb4b2132d85e7c2 >> >> https://github.com/openbsd/src/commit/a88d14946aed5dc48e4e700486795c8d171576d0 >> >> Klaus > _______________________________________________ > freebsd-arm@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org"home | help
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