[POWERPC] 8xx: generic 8xx code arch/powerpc port

Including support for non-coherent cache, some mm-related things +
relevant field in Kconfig and Makefiles. Also included rheap.o compilation
if 8xx is defined.

Non-coherent mapping were refined and renamed according to Cristoph
Hellwig. Orphaned functions were cleaned up.

[Also removed arch/ppc/kernel/dma-mapping.c, because otherwise
compiling with ARCH=ppc for a non DMA-cache-coherent platform ends up
with two copies of __dma_alloc_coherent etc.
 -- paulus.]
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/Kconfig

@@ -173,6 +173,11 @@ config PPC_86xx
 	help
 	  The Freescale E600 SoCs have 74xx cores.
 
+config PPC_8xx
+	bool "Freescale 8xx"
+	select FSL_SOC
+	select 8xx
+
 config 40x
 	bool "AMCC 40x"
 	select PPC_DCR_NATIVE
@@ -181,8 +186,6 @@ config 44x
 	bool "AMCC 44x"
 	select PPC_DCR_NATIVE
 
-config 8xx
-	bool "Freescale 8xx"
 
 config E200
 	bool "Freescale e200"
@@ -210,6 +213,10 @@ config POWER4
 config 6xx
 	bool
 
+# this is temp to handle compat with arch=ppc
+config 8xx
+	bool
+
 # this is temp to handle compat with arch=ppc
 config 83xx
 	bool

arch/powerpc/lib/Makefile

@@ -16,6 +16,7 @@ obj-$(CONFIG_PPC64)	+= checksum_64.o copypage_64.o copyuser_64.o \
 			   strcase.o
 obj-$(CONFIG_QUICC_ENGINE) += rheap.o
 obj-$(CONFIG_XMON)	+= sstep.o
+obj-$(CONFIG_NOT_COHERENT_CACHE)	+= dma-noncoherent.o
 
 ifeq ($(CONFIG_PPC64),y)
 obj-$(CONFIG_SMP)	+= locks.o
@@ -24,5 +25,6 @@ endif
 
 # Temporary hack until we have migrated to asm-powerpc
 ifeq ($(CONFIG_PPC_MERGE),y)
+obj-$(CONFIG_8xx)	+= rheap.o
 obj-$(CONFIG_CPM2)	+= rheap.o
 endif

arch/ppc/kernel/dma-mapping.c → arch/powerpc/lib/dma-noncoherent.c

@@ -22,37 +22,13 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/module.h>
-#include <linux/signal.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/string.h>
 #include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/stddef.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/bootmem.h>
 #include <linux/highmem.h>
 #include <linux/dma-mapping.h>
-#include <linux/hardirq.h>
-
-#include <asm/pgalloc.h>
-#include <asm/prom.h>
-#include <asm/io.h>
-#include <asm/mmu_context.h>
-#include <asm/pgtable.h>
-#include <asm/mmu.h>
-#include <asm/uaccess.h>
-#include <asm/smp.h>
-#include <asm/machdep.h>
-
-int map_page(unsigned long va, phys_addr_t pa, int flags);
 
 #include <asm/tlbflush.h>
 

arch/ppc/kernel/Makefile

@@ -12,7 +12,6 @@ obj-y				:= entry.o traps.o time.o misc.o \
 					setup.o \
 					ppc_htab.o
 obj-$(CONFIG_MODULES)		+= ppc_ksyms.o
-obj-$(CONFIG_NOT_COHERENT_CACHE)	+= dma-mapping.o
 obj-$(CONFIG_PCI)		+= pci.o
 obj-$(CONFIG_RAPIDIO)		+= rio.o
 obj-$(CONFIG_KGDB)		+= ppc-stub.o