# HG changeset patch
# User Hollis Blanchard <hollisb@xxxxxxxxxx>
# Date 1172876810 21600
# Node ID d13289d7e61b3359eae9d835495522ad29acc1b1
# Parent c01731b8cc990ad394c5693002666260958cc4a5
[POWERPC][XEN] Introduce "platform" abstraction to describe the IO hole.
Signed-off-by: Ryan Harper <ryanh@xxxxxxxxxx>
Signed-off-by: Hollis Blanchard <hollisb@xxxxxxxxxx>
---
xen/arch/powerpc/Makefile | 1
xen/arch/powerpc/mm.c | 5 ++--
xen/arch/powerpc/papr/xlate.c | 3 +-
xen/arch/powerpc/platform.c | 43 ++++++++++++++++++++++++++++++++++++
xen/arch/powerpc/powerpc64/ppc970.c | 12 ----------
xen/include/asm-powerpc/processor.h | 1
xen/include/asm/platform.h | 28 +++++++++++++++++++++++
7 files changed, 77 insertions(+), 16 deletions(-)
diff -r c01731b8cc99 -r d13289d7e61b xen/arch/powerpc/Makefile
--- a/xen/arch/powerpc/Makefile Thu Mar 01 15:04:45 2007 -0600
+++ b/xen/arch/powerpc/Makefile Fri Mar 02 17:06:50 2007 -0600
@@ -33,6 +33,7 @@ obj-y += ofd_fixup.o
obj-y += ofd_fixup.o
obj-y += ofd_fixup_memory.o
obj-y += physdev.o
+obj-y += platform.o
obj-y += rtas.o
obj-y += setup.o
obj-y += shadow.o
diff -r c01731b8cc99 -r d13289d7e61b xen/arch/powerpc/mm.c
--- a/xen/arch/powerpc/mm.c Thu Mar 01 15:04:45 2007 -0600
+++ b/xen/arch/powerpc/mm.c Fri Mar 02 17:06:50 2007 -0600
@@ -27,6 +27,7 @@
#include <xen/perfc.h>
#include <asm/init.h>
#include <asm/page.h>
+#include <asm/platform.h>
#include <asm/string.h>
#include <public/arch-powerpc.h>
@@ -416,7 +417,7 @@ ulong pfn2mfn(struct domain *d, ulong pf
/* Its a grant table access */
t = PFN_TYPE_GNTTAB;
mfn = gnttab_shared_mfn(d, d->grant_table, (pfn - max_page));
- } else if (d->is_privileged && cpu_io_mfn(pfn)) {
+ } else if (d->is_privileged && platform_io_mfn(pfn)) {
t = PFN_TYPE_IO;
mfn = pfn;
} else {
@@ -496,7 +497,7 @@ unsigned long mfn_to_gmfn(struct domain
return max_page + (mfn - gnttab_mfn);
/* IO? */
- if (d->is_privileged && cpu_io_mfn(mfn))
+ if (d->is_privileged && platform_io_mfn(mfn))
return mfn;
rma_mfn = page_to_mfn(d->arch.rma_page);
diff -r c01731b8cc99 -r d13289d7e61b xen/arch/powerpc/papr/xlate.c
--- a/xen/arch/powerpc/papr/xlate.c Thu Mar 01 15:04:45 2007 -0600
+++ b/xen/arch/powerpc/papr/xlate.c Fri Mar 02 17:06:50 2007 -0600
@@ -29,6 +29,7 @@
#include <asm/current.h>
#include <asm/papr.h>
#include <asm/hcalls.h>
+#include <asm/platform.h>
#ifdef DEBUG
#define DBG(fmt...) printk(fmt)
@@ -536,7 +537,7 @@ long pte_remove(ulong flags, ulong ptex,
if (lpte.bits.v) {
ulong mfn = lpte.bits.rpn;
- if (!cpu_io_mfn(mfn)) {
+ if (!platform_io_mfn(mfn)) {
struct page_info *pg = mfn_to_page(mfn);
struct domain *f = page_get_owner(pg);
diff -r c01731b8cc99 -r d13289d7e61b xen/arch/powerpc/platform.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/powerpc/platform.c Fri Mar 02 17:06:50 2007 -0600
@@ -0,0 +1,43 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2007
+ *
+ * Authors: Ryan Harper <ryanh@xxxxxxxxxx>
+ * Hollis Blanchard <hollisb@xxxxxxxxxx>
+ */
+
+#include <asm/page.h>
+#include <asm/platform.h>
+
+#define IO_RANGE_START (2UL << 30)
+#define IO_RANGE_END (4UL << 30)
+#define IO_SIZE (IO_RANGE_END - IO_RANGE_START)
+
+unsigned long platform_iohole_base(void)
+{
+ return IO_RANGE_START;
+}
+
+unsigned long platform_iohole_size(void)
+{
+ return IO_SIZE;
+}
+
+int platform_io_mfn(unsigned long mfn)
+{
+ unsigned long maddr = mfn << PAGE_SHIFT;
+ return maddr > IO_RANGE_START && maddr < IO_RANGE_END;
+}
diff -r c01731b8cc99 -r d13289d7e61b xen/arch/powerpc/powerpc64/ppc970.c
--- a/xen/arch/powerpc/powerpc64/ppc970.c Thu Mar 01 15:04:45 2007 -0600
+++ b/xen/arch/powerpc/powerpc64/ppc970.c Fri Mar 02 17:06:50 2007 -0600
@@ -129,18 +129,6 @@ unsigned int cpu_extent_order(void)
return log_large_page_sizes[0] - PAGE_SHIFT;
}
-/* This is more a platform thing than a CPU thing, but we only have
- * one platform now */
-int cpu_io_mfn(ulong mfn)
-{
- /* totally cheating */
- if (mfn >= (2UL << (30 - PAGE_SHIFT)) && /* 2GiB */
- mfn < (4UL << (30 - PAGE_SHIFT))) /* 4GiB */
- return 1;
-
- return 0;
-}
-
int cpu_threads(int cpuid)
{
return 1;
diff -r c01731b8cc99 -r d13289d7e61b xen/include/asm-powerpc/processor.h
--- a/xen/include/asm-powerpc/processor.h Thu Mar 01 15:04:45 2007 -0600
+++ b/xen/include/asm-powerpc/processor.h Fri Mar 02 17:06:50 2007 -0600
@@ -124,7 +124,6 @@ extern uint cpu_large_page_orders(uint *
extern uint cpu_large_page_orders(uint *sizes, uint max);
extern void cpu_initialize(int cpuid);
extern void cpu_init_vcpu(struct vcpu *);
-extern int cpu_io_mfn(ulong mfn);
extern int cpu_threads(int cpuid);
extern void save_cpu_sprs(struct vcpu *);
extern void load_cpu_sprs(struct vcpu *);
diff -r c01731b8cc99 -r d13289d7e61b xen/include/asm/platform.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/include/asm/platform.h Fri Mar 02 17:06:50 2007 -0600
@@ -0,0 +1,28 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2007
+ *
+ * Authors: Ryan Harper <ryanh@xxxxxxxxxx>
+ */
+
+#ifndef _ASM_PLATFORM_H_
+#define _ASM_PLATFORM_H_
+
+extern unsigned long platform_iohole_base(void);
+extern unsigned long platform_iohole_size(void);
+extern int platform_io_mfn(unsigned long mfn);
+
+#endif
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