Date: Wed, 18 May 2011 15:07:36 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r222059 - projects/pseries/powerpc/ofw Message-ID: <201105181507.p4IF7ahr096774@svn.freebsd.org>
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Author: nwhitehorn Date: Wed May 18 15:07:36 2011 New Revision: 222059 URL: http://svn.freebsd.org/changeset/base/222059 Log: Make sure the OF argument bounce page is not until below 4 GB but also below the real-mode boundary that that real-mode firmware can see it. Modified: projects/pseries/powerpc/ofw/ofw_real.c Modified: projects/pseries/powerpc/ofw/ofw_real.c ============================================================================== --- projects/pseries/powerpc/ofw/ofw_real.c Wed May 18 14:59:53 2011 (r222058) +++ projects/pseries/powerpc/ofw/ofw_real.c Wed May 18 15:07:36 2011 (r222059) @@ -205,13 +205,14 @@ ofw_real_bounce_alloc(void *junk) /* * Allocate a page of contiguous, wired physical memory that can - * fit into a 32-bit address space. + * fit into a 32-bit address space and accessed from real mode. */ mtx_lock(&of_bounce_mtx); - of_bounce_virt = contigmalloc(PAGE_SIZE, M_OFWREAL, 0, - 0, BUS_SPACE_MAXADDR_32BIT, PAGE_SIZE, PAGE_SIZE); + of_bounce_virt = contigmalloc(PAGE_SIZE, M_OFWREAL, 0, 0, + ulmin(platform_real_maxaddr(), BUS_SPACE_MAXADDR_32BIT), PAGE_SIZE, + PAGE_SIZE); of_bounce_phys = vtophys(of_bounce_virt); of_bounce_size = PAGE_SIZE;
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