On 9/5/19 3:11 pm, Andrew Donnellan wrote:
The powernv platform is the only one that directly accesses SCOMs. Move the
support code to platforms/powernv, and get rid of the PPC_SCOM Kconfig
option, as SCOM support is always selected when compiling for powernv.
This also means that the Kconfig item for CONFIG_SCOM_DEBUGFS will actually
show up in menuconfig, as previously it was the only labelled option in
sysdev/Kconfig and wasn't actually in a menu.
As I've just realised, this isn't actually correct - the option does
indeed show up... in the root menu, where I've just been trained to
ignore it, and where you won't get a menu location if you try to search
for it using / in menuconfig.
I think moving it to the platform menu is obviously a better location.
mpe would you be able to fix up the commit message in merge?
Andrew
Signed-off-by: Andrew Donnellan <a...@linux.ibm.com>
---
v1->v2:
- move scom.h as well (mpe)
- add all the other patches in this series
---
arch/powerpc/platforms/powernv/Kconfig | 5 ++++-
arch/powerpc/platforms/powernv/Makefile | 2 +-
arch/powerpc/platforms/powernv/opal-xscom.c | 3 ++-
arch/powerpc/{sysdev => platforms/powernv}/scom.c | 3 ++-
.../{include/asm => platforms/powernv}/scom.h | 13 +++----------
arch/powerpc/sysdev/Kconfig | 7 -------
arch/powerpc/sysdev/Makefile | 2 --
7 files changed, 12 insertions(+), 23 deletions(-)
rename arch/powerpc/{sysdev => platforms/powernv}/scom.c (99%)
rename arch/powerpc/{include/asm => platforms/powernv}/scom.h (95%)
diff --git a/arch/powerpc/platforms/powernv/Kconfig
b/arch/powerpc/platforms/powernv/Kconfig
index 850eee860cf2..938803eab0ad 100644
--- a/arch/powerpc/platforms/powernv/Kconfig
+++ b/arch/powerpc/platforms/powernv/Kconfig
@@ -12,7 +12,6 @@ config PPC_POWERNV
select EPAPR_BOOT
select PPC_INDIRECT_PIO
select PPC_UDBG_16550
- select PPC_SCOM
select ARCH_RANDOM
select CPU_FREQ
select PPC_DOORBELL
@@ -47,3 +46,7 @@ config PPC_VAS
VAS adapters are found in POWER9 based systems.
If unsure, say N.
+
+config SCOM_DEBUGFS
+ bool "Expose SCOM controllers via debugfs"
+ depends on DEBUG_FS
diff --git a/arch/powerpc/platforms/powernv/Makefile
b/arch/powerpc/platforms/powernv/Makefile
index da2e99efbd04..4b1644150135 100644
--- a/arch/powerpc/platforms/powernv/Makefile
+++ b/arch/powerpc/platforms/powernv/Makefile
@@ -4,12 +4,12 @@ obj-y += idle.o opal-rtc.o opal-nvram.o
opal-lpc.o opal-flash.o
obj-y += rng.o opal-elog.o opal-dump.o opal-sysparam.o
opal-sensor.o
obj-y += opal-msglog.o opal-hmi.o opal-power.o opal-irqchip.o
obj-y += opal-kmsg.o opal-powercap.o opal-psr.o
opal-sensor-groups.o
+obj-y += opal-xscom.o scom.o
obj-$(CONFIG_SMP) += smp.o subcore.o subcore-asm.o
obj-$(CONFIG_PCI) += pci.o pci-ioda.o npu-dma.o pci-ioda-tce.o
obj-$(CONFIG_CXL_BASE) += pci-cxl.o
obj-$(CONFIG_EEH) += eeh-powernv.o
-obj-$(CONFIG_PPC_SCOM) += opal-xscom.o
obj-$(CONFIG_MEMORY_FAILURE) += opal-memory-errors.o
obj-$(CONFIG_OPAL_PRD) += opal-prd.o
obj-$(CONFIG_PERF_EVENTS) += opal-imc.o
diff --git a/arch/powerpc/platforms/powernv/opal-xscom.c
b/arch/powerpc/platforms/powernv/opal-xscom.c
index 22d5e1110dbb..66337d92cb63 100644
--- a/arch/powerpc/platforms/powernv/opal-xscom.c
+++ b/arch/powerpc/platforms/powernv/opal-xscom.c
@@ -18,7 +18,8 @@
#include <asm/machdep.h>
#include <asm/firmware.h>
#include <asm/opal.h>
-#include <asm/scom.h>
+
+#include "scom.h"
/*
* We could probably fit that inside the scom_map_t
diff --git a/arch/powerpc/sysdev/scom.c b/arch/powerpc/platforms/powernv/scom.c
similarity index 99%
rename from arch/powerpc/sysdev/scom.c
rename to arch/powerpc/platforms/powernv/scom.c
index a707b24a7ddb..50c019d2ef45 100644
--- a/arch/powerpc/sysdev/scom.c
+++ b/arch/powerpc/platforms/powernv/scom.c
@@ -23,9 +23,10 @@
#include <linux/export.h>
#include <asm/debugfs.h>
#include <asm/prom.h>
-#include <asm/scom.h>
#include <linux/uaccess.h>
+#include "scom.h"
+
const struct scom_controller *scom_controller;
EXPORT_SYMBOL_GPL(scom_controller);
diff --git a/arch/powerpc/include/asm/scom.h b/arch/powerpc/platforms/powernv/scom.h
similarity index 95%
rename from arch/powerpc/include/asm/scom.h
rename to arch/powerpc/platforms/powernv/scom.h
index f5cde45b1161..b14fe0edf95b 100644
--- a/arch/powerpc/include/asm/scom.h
+++ b/arch/powerpc/platforms/powernv/scom.h
@@ -18,12 +18,8 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#ifndef _ASM_POWERPC_SCOM_H
-#define _ASM_POWERPC_SCOM_H
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-#ifdef CONFIG_PPC_SCOM
+#ifndef _SCOM_H
+#define _SCOM_H
/*
* The SCOM bus is a sideband bus used for accessing various internal
@@ -161,7 +157,4 @@ static inline int scom_write(scom_map_t map, u64 reg, u64
value)
}
-#endif /* CONFIG_PPC_SCOM */
-#endif /* __ASSEMBLY__ */
-#endif /* __KERNEL__ */
-#endif /* _ASM_POWERPC_SCOM_H */
+#endif /* _SCOM_H */
diff --git a/arch/powerpc/sysdev/Kconfig b/arch/powerpc/sysdev/Kconfig
index e0dbec780fe9..7808d279ff1d 100644
--- a/arch/powerpc/sysdev/Kconfig
+++ b/arch/powerpc/sysdev/Kconfig
@@ -28,13 +28,6 @@ config PPC_MSI_BITMAP
source "arch/powerpc/sysdev/xics/Kconfig"
source "arch/powerpc/sysdev/xive/Kconfig"
-config PPC_SCOM
- bool
-
-config SCOM_DEBUGFS
- bool "Expose SCOM controllers via debugfs"
- depends on PPC_SCOM && DEBUG_FS
-
config GE_FPGA
bool
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index aaf23283ba0c..35d52d1d2fc0 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -51,8 +51,6 @@ ifdef CONFIG_SUSPEND
obj-$(CONFIG_PPC_BOOK3S_32) += 6xx-suspend.o
endif
-obj-$(CONFIG_PPC_SCOM) += scom.o
-
obj-$(CONFIG_PPC_EARLY_DEBUG_MEMCONS) += udbg_memcons.o
obj-$(CONFIG_PPC_XICS) += xics/
--
Andrew Donnellan OzLabs, ADL Canberra
a...@linux.ibm.com IBM Australia Limited
