linux-kernel - [tip:x86/platform] x86/platform/uv/BAU: Replace hard-coded values with MMR definitions

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Message-ID: <tip-1da2fd61d956a01ead87173a8367e5c664617f7b@git.kernel.org>
Date:   Mon, 15 Jan 2018 19:55:07 -0800
From:   tip-bot for Andrew Banman <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     torvalds@...ux-foundation.org, mike.travis@....com,
        akpm@...ux-foundation.org, rja@....com, tglx@...utronix.de,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        sivanich@....com, mingo@...nel.org, abanman@....com, hpa@...or.com
Subject: [tip:x86/platform] x86/platform/uv/BAU: Replace hard-coded values
 with MMR definitions

Commit-ID:  1da2fd61d956a01ead87173a8367e5c664617f7b
Gitweb:     https://git.kernel.org/tip/1da2fd61d956a01ead87173a8367e5c664617f7b
Author:     Andrew Banman <abanman@....com>
AuthorDate: Mon, 8 Jan 2018 13:43:12 -0600
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 16 Jan 2018 03:58:38 +0100

x86/platform/uv/BAU: Replace hard-coded values with MMR definitions

Replaces hard-coded node ID shift for the descriptor base MMR to fix
initialization on UV4A while maintaining support for previous architectures.

Signed-off-by: Andrew Banman <abanman@....com>
Acked-by: Mike Travis <mike.travis@....com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Dimitri Sivanich <sivanich@....com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Russ Anderson <rja@....com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/1515440592-44060-1-git-send-email-abanman@hpe.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/include/asm/uv/uv_bau.h | 1 -
 arch/x86/platform/uv/tlb_uv.c    | 3 ++-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/uv/uv_bau.h b/arch/x86/include/asm/uv/uv_bau.h
index 7cac798..7803114 100644
--- a/arch/x86/include/asm/uv/uv_bau.h
+++ b/arch/x86/include/asm/uv/uv_bau.h
@@ -48,7 +48,6 @@
 #define UV2_NET_ENDPOINT_INTD		0x28
 #define UV_NET_ENDPOINT_INTD		(is_uv1_hub() ?			\
 			UV1_NET_ENDPOINT_INTD : UV2_NET_ENDPOINT_INTD)
-#define UV_DESC_PSHIFT			49
 #define UV_PAYLOADQ_GNODE_SHIFT		49
 #define UV_PTC_BASENAME			"sgi_uv/ptc_statistics"
 #define UV_BAU_BASENAME			"sgi_uv/bau_tunables"
diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index 8538a67..c2e9285 100644
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1751,7 +1751,8 @@ static void activation_descriptor_init(int node, int pnode, int base_pnode)
 		uv1 = 1;
 
 	/* the 14-bit pnode */
-	write_mmr_descriptor_base(pnode, (n << UV_DESC_PSHIFT | m));
+	write_mmr_descriptor_base(pnode,
+		(n << UVH_LB_BAU_SB_DESCRIPTOR_BASE_NODE_ID_SHFT | m));
 	/*
 	 * Initializing all 8 (ITEMS_PER_DESC) descriptors for each
 	 * cpu even though we only use the first one; one descriptor can