[src/trunk]: src/sys/arch/evbarm/tegra handle PMAP_NEED_ALLOC_POOLPAGE

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a13774de8549
branches:  trunk
changeset: 807905:a13774de8549
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sun Apr 26 17:40:59 2015 +0000

description:
handle PMAP_NEED_ALLOC_POOLPAGE

diffstat:

 sys/arch/evbarm/tegra/tegra_machdep.c |  33 +++++++++++++++++++++++++--------
 1 files changed, 25 insertions(+), 8 deletions(-)

diffs (82 lines):

diff -r 780f94a92b83 -r a13774de8549 sys/arch/evbarm/tegra/tegra_machdep.c
--- a/sys/arch/evbarm/tegra/tegra_machdep.c     Sun Apr 26 17:14:24 2015 +0000
+++ b/sys/arch/evbarm/tegra/tegra_machdep.c     Sun Apr 26 17:40:59 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_machdep.c,v 1.4 2015/04/26 16:24:01 jmcneill Exp $ */
+/* $NetBSD: tegra_machdep.c,v 1.5 2015/04/26 17:40:59 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tegra_machdep.c,v 1.4 2015/04/26 16:24:01 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tegra_machdep.c,v 1.5 2015/04/26 17:40:59 jmcneill Exp $");
 
 #include "opt_tegra.h"
 #include "opt_machdep.h"
@@ -135,6 +135,15 @@
 #undef _A
 #undef _S
 
+#ifdef PMAP_NEED_ALLOC_POOLPAGE
+static struct boot_physmem bp_highgig = {
+       .bp_start = TEGRA_EXTMEM_BASE / NBPG,
+       .bp_pages = (KERNEL_VM_BASE - KERNEL_BASE) / NBPG,
+       .bp_freelist = VM_FREELIST_ISADMA,
+       .bp_flags = 0
+};
+#endif
+
 #ifdef VERBOSE_INIT_ARM
 static void
 tegra_putchar(char c)
@@ -245,6 +254,8 @@
        ram_size = tegra_mc_memsize();
 
 #ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS
+       const bool mapallmem_p = true;
+#ifndef PMAP_NEED_ALLOC_POOLPAGE
        if (ram_size > KERNEL_VM_BASE - KERNEL_BASE) {
                printf("%s: dropping RAM size from %luMB to %uMB\n",
                    __func__, (unsigned long) (ram_size >> 20),     
@@ -252,6 +263,9 @@
                ram_size = KERNEL_VM_BASE - KERNEL_BASE;
        }
 #endif
+#else
+       const bool mapallmem_p = false;
+#endif
 
        /*
         * If MEMSIZE specified less than what we really have, limit ourselves
@@ -270,12 +284,6 @@
        bootconfig.dram[0].address = TEGRA_EXTMEM_BASE; /* DDR PHY addr */
        bootconfig.dram[0].pages = ram_size / PAGE_SIZE;
 
-#ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS
-       const bool mapallmem_p = true;
-       KASSERT(ram_size <= KERNEL_VM_BASE - KERNEL_BASE);
-#else
-       const bool mapallmem_p = false;
-#endif
        KASSERT((armreg_pfr1_read() & ARM_PFR1_SEC_MASK) != 0);
 
        arm32_bootmem_init(bootconfig.dram[0].address, ram_size,
@@ -298,6 +306,15 @@
 
        evbarm_device_register = tegra_device_register;
 
+#ifdef PMAP_NEED_ALLOC_POOLPAGE
+       if (atop(ram_size) > bp_highgig.bp_pages) {
+               bp_highgig.bp_start += atop(ram_size) - bp_highgig.bp_pages;
+               arm_poolpage_vmfreelist = bp_highgig.bp_freelist;
+               return initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE,
+                   &bp_highgig, 1);
+       }
+#endif
+
        return initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, NULL, 0);
 
 }