Date: Sat, 1 Oct 2016 17:57:32 +0000 (UTC) From: Oleksandr Tymoshenko <gonzo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r306557 - head/sys/arm/broadcom/bcm2835 Message-ID: <201610011757.u91HvWKj038394@repo.freebsd.org>
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Author: gonzo Date: Sat Oct 1 17:57:32 2016 New Revision: 306557 URL: https://svnweb.freebsd.org/changeset/base/306557 Log: Use VM_MEMATTR_WRITE_COMBINING memattr for mmap(2) on framebuffer VM_MEMATTR_WRITE_COMBINING sets write-through cache flag for framebuffer memory that prevents pixel data from being stuck in cache until evicition happens Modified: head/sys/arm/broadcom/bcm2835/bcm2835_fbd.c Modified: head/sys/arm/broadcom/bcm2835/bcm2835_fbd.c ============================================================================== --- head/sys/arm/broadcom/bcm2835/bcm2835_fbd.c Sat Oct 1 17:48:41 2016 (r306556) +++ head/sys/arm/broadcom/bcm2835/bcm2835_fbd.c Sat Oct 1 17:57:32 2016 (r306557) @@ -113,6 +113,8 @@ bcm_fb_setup_fbd(struct bcmsc_softc *sc) sc->info.fb_stride = fb.pitch; sc->info.fb_width = fb.xres; sc->info.fb_height = fb.yres; + sc->info.fb_flags = FB_FLAG_MEMATTR; + sc->info.fb_memattr = VM_MEMATTR_WRITE_COMBINING; if (sc->fbswap) { switch (sc->info.fb_bpp) {
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