linux-kernel - [PATCH net-next 01/11] net: ipa: share field mask values for IPA hash registers

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Message-Id: <20201116233805.13775-2-elder@linaro.org>
Date:   Mon, 16 Nov 2020 17:37:55 -0600
From:   Alex Elder <elder@...aro.org>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     evgreen@...omium.org, subashab@...eaurora.org,
        cpratapa@...eaurora.org, bjorn.andersson@...aro.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 01/11] net: ipa: share field mask values for IPA hash registers

The IPA filter/routing hash enable register and filter/routing hash
flush register each have four single-bit fields representing the
four hashed tables to be enabled or flushed.  The field positions
are identical, so just use a single set of field masks to represent
the fields for both registers.

Signed-off-by: Alex Elder <elder@...aro.org>
---
 drivers/net/ipa/ipa_reg.h   | 13 +++++--------
 drivers/net/ipa/ipa_table.c |  4 ++--
 2 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ipa/ipa_reg.h b/drivers/net/ipa/ipa_reg.h
index 8eaf5f2096270..001961cd526bc 100644
--- a/drivers/net/ipa/ipa_reg.h
+++ b/drivers/net/ipa/ipa_reg.h
@@ -153,10 +153,6 @@ static inline u32 ipa_reg_state_aggr_active_offset(enum ipa_version version)
 
 /* The next register is present for IPA v4.2 and above */
 #define IPA_REG_FILT_ROUT_HASH_EN_OFFSET		0x00000148
-#define IPV6_ROUTER_HASH_EN			GENMASK(0, 0)
-#define IPV6_FILTER_HASH_EN			GENMASK(4, 4)
-#define IPV4_ROUTER_HASH_EN			GENMASK(8, 8)
-#define IPV4_FILTER_HASH_EN			GENMASK(12, 12)
 
 static inline u32 ipa_reg_filt_rout_hash_flush_offset(enum ipa_version version)
 {
@@ -166,10 +162,11 @@ static inline u32 ipa_reg_filt_rout_hash_flush_offset(enum ipa_version version)
 	return 0x000014c;
 }
 
-#define IPV6_ROUTER_HASH_FLUSH			GENMASK(0, 0)
-#define IPV6_FILTER_HASH_FLUSH			GENMASK(4, 4)
-#define IPV4_ROUTER_HASH_FLUSH			GENMASK(8, 8)
-#define IPV4_FILTER_HASH_FLUSH			GENMASK(12, 12)
+/* The next four fields are used for the hash enable and flush registers */
+#define IPV6_ROUTER_HASH_FMASK			GENMASK(0, 0)
+#define IPV6_FILTER_HASH_FMASK			GENMASK(4, 4)
+#define IPV4_ROUTER_HASH_FMASK			GENMASK(8, 8)
+#define IPV4_FILTER_HASH_FMASK			GENMASK(12, 12)
 
 #define IPA_REG_BCR_OFFSET				0x000001d0
 #define BCR_CMDQ_L_LACK_ONE_ENTRY		BIT(0)
diff --git a/drivers/net/ipa/ipa_table.c b/drivers/net/ipa/ipa_table.c
index b3790aa952a15..32e2d3e052d55 100644
--- a/drivers/net/ipa/ipa_table.c
+++ b/drivers/net/ipa/ipa_table.c
@@ -422,8 +422,8 @@ int ipa_table_hash_flush(struct ipa *ipa)
 		return -EBUSY;
 	}
 
-	val = IPV4_FILTER_HASH_FLUSH | IPV6_FILTER_HASH_FLUSH;
-	val |= IPV6_ROUTER_HASH_FLUSH | IPV4_ROUTER_HASH_FLUSH;
+	val = IPV4_FILTER_HASH_FMASK | IPV6_FILTER_HASH_FMASK;
+	val |= IPV6_ROUTER_HASH_FMASK | IPV4_ROUTER_HASH_FMASK;
 
 	ipa_cmd_register_write_add(trans, offset, val, val, false);
 
-- 
2.20.1