aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/sysdev
diff options
context:
space:
mode:
authorKumar Gala <galak@freescale.com>2005-10-26 09:56:10 -0500
committerPaul Mackerras <paulus@samba.org>2005-10-27 20:51:22 +1000
commit4b24b01c6c0bab24e6a4c3e4a02d53b564f2d05c (patch)
tree37aebf090a6b48b622c1ee6045e3def62cce26f9 /arch/powerpc/sysdev
parentcffb09ce6ba7706c89c6df9ca8e72c81adda13f0 (diff)
downloadlinux-linaro-stable-4b24b01c6c0bab24e6a4c3e4a02d53b564f2d05c.tar.gz
[PATCH] powerpc: Moved dcr support to arch/powerpc
Signed-off-by: Kumar K. Gala <kumar.gala@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/sysdev')
-rw-r--r--arch/powerpc/sysdev/Makefile2
-rw-r--r--arch/powerpc/sysdev/dcr.S41
2 files changed, 43 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index 97119c0ffc72..d071ae875e25 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -2,3 +2,5 @@ obj-$(CONFIG_MPIC) += mpic.o
obj-$(CONFIG_PPC_INDIRECT_PCI) += indirect_pci.o
obj-$(CONFIG_PPC_I8259) += i8259.o
obj-$(CONFIG_PPC_MPC106) += grackle.o
+obj-$(CONFIG_BOOKE) += dcr.o
+obj-$(CONFIG_40x) += dcr.o
diff --git a/arch/powerpc/sysdev/dcr.S b/arch/powerpc/sysdev/dcr.S
new file mode 100644
index 000000000000..895f10243a43
--- /dev/null
+++ b/arch/powerpc/sysdev/dcr.S
@@ -0,0 +1,41 @@
+/*
+ * arch/ppc/syslib/dcr.S
+ *
+ * "Indirect" DCR access
+ *
+ * Copyright (c) 2004 Eugene Surovegin <ebs@ebshome.net>
+ *
+ * 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.
+ */
+
+#include <asm/ppc_asm.h>
+#include <asm/processor.h>
+
+#define DCR_ACCESS_PROLOG(table) \
+ rlwinm r3,r3,4,18,27; \
+ lis r5,table@h; \
+ ori r5,r5,table@l; \
+ add r3,r3,r5; \
+ mtctr r3; \
+ bctr
+
+_GLOBAL(__mfdcr)
+ DCR_ACCESS_PROLOG(__mfdcr_table)
+
+_GLOBAL(__mtdcr)
+ DCR_ACCESS_PROLOG(__mtdcr_table)
+
+__mfdcr_table:
+ mfdcr r3,0; blr
+__mtdcr_table:
+ mtdcr 0,r4; blr
+
+dcr = 1
+ .rept 1023
+ mfdcr r3,dcr; blr
+ mtdcr dcr,r4; blr
+ dcr = dcr + 1
+ .endr