powerpc: Make set_dabr() a ppc_md function

Move pSeries specific code in set_dabr() into a ppc_md function, this will
allow us to keep plpar_wrappers.h private to platforms/pseries.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>

3 files changed, 18 insertions, 17 deletions

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 8f85dabe4df3..96843211cc5c 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -48,8 +48,8 @@
 #include <asm/prom.h>
 #ifdef CONFIG_PPC64
 #include <asm/firmware.h>
-#include <asm/plpar_wrappers.h>
 #include <asm/time.h>
+#include <asm/machdep.h>
 #endif
 
 extern unsigned long _get_SP(void);
@@ -201,27 +201,15 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs)
 }
 #endif /* CONFIG_SPE */
 
-static void set_dabr_spr(unsigned long val)
-{
-        mtspr(SPRN_DABR, val);
-}
-
 int set_dabr(unsigned long dabr)
 {
-        int ret = 0;
-
 #ifdef CONFIG_PPC64
-        if (firmware_has_feature(FW_FEATURE_XDABR)) {
-                /* We want to catch accesses from kernel and userspace */
-                unsigned long flags = H_DABRX_KERNEL|H_DABRX_USER;
-                ret = plpar_set_xdabr(dabr, flags);
-        } else if (firmware_has_feature(FW_FEATURE_DABR)) {
-                ret = plpar_set_dabr(dabr);
-        } else
+        if (ppc_md.set_dabr)
+                return ppc_md.set_dabr(dabr);
 #endif
-                set_dabr_spr(dabr);
 
-        return ret;
+        mtspr(SPRN_DABR, dabr);
+        return 0;
 }
 
 #ifdef CONFIG_PPC64
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index c0a3d918148a..ee468f07f378 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -350,6 +350,16 @@ static void pSeries_mach_cpu_die(void)
         for(;;);
 }
 
+static int pseries_set_dabr(unsigned long dabr)
+{
+        if (firmware_has_feature(FW_FEATURE_XDABR)) {
+                /* We want to catch accesses from kernel and userspace */
+                return plpar_set_xdabr(dabr, H_DABRX_KERNEL | H_DABRX_USER);
+        }
+
+        return plpar_set_dabr(dabr);
+}
+
 
 /*
  * Early initialization.  Relocation is on but do not reference unbolted pages
@@ -385,6 +395,8 @@ static void __init pSeries_init_early(void)
                 DBG("Hello World !\n");
         }
 
+        if (firmware_has_feature(FW_FEATURE_XDABR | FW_FEATURE_DABR))
+                ppc_md.set_dabr = pseries_set_dabr;
 
         iommu_init_early_pSeries();
 
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index 451b345cfc78..629ca964b974 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -80,6 +80,7 @@ struct machdep_calls {
         void            (*iommu_dev_setup)(struct pci_dev *dev);
         void            (*iommu_bus_setup)(struct pci_bus *bus);
         void            (*irq_bus_setup)(struct pci_bus *bus);
+        int             (*set_dabr)(unsigned long dabr);
 #endif
 
         int             (*probe)(int platform);