From 7042dc6faf8c4b86cae249462fd01988e993df06 Mon Sep 17 00:00:00 2001
From: Michael Bringmann <mwb@linux.vnet.ibm.com>
Date: Fri, 1 Dec 2017 17:19:40 -0600
Subject: [PATCH 1/5] powerpc/firmware: Add definitions for new drc-info
firmware feature
References: bsc#1109158
Patch-mainline: v4.16-rc1
Git-commit: 3f38000eda485f466153d37c4f9201fb50cb03a3
Firmware Features: Define new bit flag representing the presence of
new device tree property "ibm,drc-info". The flag is used to tell
the front end processor whether the Linux kernel supports the new
property, and by the front end processor to tell the Linux kernel
that the new property is present in the device tree.
Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
arch/powerpc/include/asm/firmware.h | 4 +++-
arch/powerpc/include/asm/prom.h | 1 +
arch/powerpc/platforms/pseries/firmware.c | 1 +
3 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h
index 832df61f30ef..511acfd7ab0d 100644
--- a/arch/powerpc/include/asm/firmware.h
+++ b/arch/powerpc/include/asm/firmware.h
@@ -52,6 +52,7 @@
#define FW_FEATURE_TYPE1_AFFINITY ASM_CONST(0x0000000100000000)
#define FW_FEATURE_PRRN ASM_CONST(0x0000000200000000)
#define FW_FEATURE_DRMEM_V2 ASM_CONST(0x0000000400000000)
+#define FW_FEATURE_DRC_INFO ASM_CONST(0x0000000400000000)
#ifndef __ASSEMBLY__
@@ -68,7 +69,8 @@ enum {
FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO |
FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY |
FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN |
- FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2,
+ FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2 |
+ FW_FEATURE_DRC_INFO,
FW_FEATURE_PSERIES_ALWAYS = 0,
FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL,
FW_FEATURE_POWERNV_ALWAYS = 0,
diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index 9f27866e3126..2ab5d732fefa 100644
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -160,6 +160,7 @@ extern int of_get_ibm_chip_id(struct device_node *np);
#define OV5_HASH_GTSE 0x1940 /* Guest Translation Shoot Down Avail */
/* Radix Table Extensions */
#define OV5_RADIX_GTSE 0x1A40 /* Guest Translation Shoot Down Avail */
+#define OV5_DRC_INFO 0x1640 /* Redef Prop Structures: drc-info */
/* Option Vector 6: IBM PAPR hints */
#define OV6_LINUX 0x02 /* Linux is our OS */
diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c
index aac3ea2911b2..a3bbeb43689e 100644
--- a/arch/powerpc/platforms/pseries/firmware.c
+++ b/arch/powerpc/platforms/pseries/firmware.c
@@ -115,6 +115,7 @@ vec5_fw_features_table[] = {
{FW_FEATURE_TYPE1_AFFINITY, OV5_TYPE1_AFFINITY},
{FW_FEATURE_PRRN, OV5_PRRN},
{FW_FEATURE_DRMEM_V2, OV5_DRMEM_V2},
+ {FW_FEATURE_DRC_INFO, OV5_DRC_INFO},
};
static void __init fw_vec5_feature_init(const char *vec5, unsigned long len)
--
2.13.7