Date: Mon, 23 Oct 2000 15:26:22 +0200 From: Johan Karlsson <k@numeri.campus.luth.se> To: "Christopher Harrer" <charrer@alacritech.com> Cc: "Freebsd-Hackers" <freebsd-hackers@FreeBSD.ORG> Subject: Re: Cache Questions Message-ID: <200010231326.PAA07547@numeri.campus.luth.se> In-Reply-To: Your message of "Mon, 23 Oct 2000 08:33:04 EDT." <POELKPJGDHAPIPMEMHGAGEHOCIAA.charrer@alacritech.com>
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At Mon, 23 Oct 2000 08:33:04 EDT, "Christopher Harrer" wrote: > Hello All, > > We're working on a driver for a PCI card, we're currently running into a > problem that's symptomatic of a cache coherency problem. We have a area of > memory that we manipulate and pass a physical address to our card. In other > OS's (Linux, NT), before we manipulate this memory area, we mark the area as > non-cachable. Are there similar operations/system calls we can use in > FreeBSD? Are there any FAQ's, Docs or man-pages that explain memory > usage/attributes? See (in 4-Stabel and current) /usr/include/sys/memrange.h which has functions for setting memory regions uncachable. /Johan K To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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