[POWERPC] Generic DCR infrastructure
This patch adds new dcr_map/dcr_read/dcr_write accessors for DCRs that
can be used by drivers to transparently address either native DCRs or
memory mapped DCRs. The implementation for memory mapped DCRs is done
after the binding being currently worked on for SLOF and the Axon
chipset. This patch enables it for the cell native platform
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 96316c8..0e564d3 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -160,9 +160,11 @@
config 40x
bool "AMCC 40x"
+ select PPC_DCR_NATIVE
config 44x
bool "AMCC 44x"
+ select PPC_DCR_NATIVE
config 8xx
bool "Freescale 8xx"
@@ -208,6 +210,19 @@
bool
default y if PPC64
+config PPC_DCR_NATIVE
+ bool
+ default n
+
+config PPC_DCR_MMIO
+ bool
+ default n
+
+config PPC_DCR
+ bool
+ depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
+ default y
+
config BOOKE
bool
depends on E200 || E500
@@ -453,6 +468,7 @@
config PPC_CELL_NATIVE
bool
select PPC_CELL
+ select PPC_DCR_MMIO
default n
config PPC_IBM_CELL_BLADE
