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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	Chen-Yu Tsai <wens@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>,
	Jitendra Vegiraju <jitendra.vegiraju@broadcom.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-sunxi@lists.linux.dev, netdev@vger.kernel.org,
	Paolo Abeni <pabeni@redhat.com>,
	Samuel Holland <samuel@sholland.org>
Subject: [PATCH RFC net-next 02/10] net: stmmac: rename dev_id to userver
Date: Wed, 08 Apr 2026 10:26:49 +0100	[thread overview]
Message-ID: <E1wAPBR-0000000F7ju-1fD9@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <adYfPBHsXxQUsMyr@shell.armlinux.org.uk>

The Synopsys Databook and several implementation TRMs identify bits
15:8 of the version register in dwmac v3.xx and v4.xx as "userver".
We even print its value with "User ID". Rather than using "dev_id",
use "userver" instead.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/hwif.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.c b/drivers/net/ethernet/stmicro/stmmac/hwif.c
index 3774af66db48..830ff816ab4f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.c
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.c
@@ -15,7 +15,7 @@
 
 struct stmmac_version {
 	u8 snpsver;
-	u8 dev_id;
+	u8 userver;
 };
 
 static void stmmac_get_version(struct stmmac_priv *priv,
@@ -26,7 +26,7 @@ static void stmmac_get_version(struct stmmac_priv *priv,
 	u32 version;
 
 	ver->snpsver = 0;
-	ver->dev_id = 0;
+	ver->userver = 0;
 
 	if (core_type == DWMAC_CORE_MAC100)
 		return;
@@ -48,7 +48,7 @@ static void stmmac_get_version(struct stmmac_priv *priv,
 
 	ver->snpsver = FIELD_GET(DWMAC_SNPSVER, version);
 	if (core_type == DWMAC_CORE_XGMAC)
-		ver->dev_id = FIELD_GET(DWMAC_USERVER, version);
+		ver->userver = FIELD_GET(DWMAC_USERVER, version);
 }
 
 static void stmmac_dwmac_mode_quirk(struct stmmac_priv *priv)
@@ -111,7 +111,7 @@ int stmmac_reset(struct stmmac_priv *priv)
 static const struct stmmac_hwif_entry {
 	enum dwmac_core_type core_type;
 	u32 min_snpsver;
-	u32 dev_id;
+	u32 userver;
 	const struct stmmac_regs_off regs;
 	const void *desc;
 	const void *dma;
@@ -247,7 +247,7 @@ static const struct stmmac_hwif_entry {
 	}, {
 		.core_type = DWMAC_CORE_XGMAC,
 		.min_snpsver = DWXGMAC_CORE_2_10,
-		.dev_id = DWXGMAC_ID,
+		.userver = DWXGMAC_ID,
 		.regs = {
 			.ptp_off = PTP_XGMAC_OFFSET,
 			.mmc_off = MMC_XGMAC_OFFSET,
@@ -269,7 +269,7 @@ static const struct stmmac_hwif_entry {
 	}, {
 		.core_type = DWMAC_CORE_XGMAC,
 		.min_snpsver = DWXLGMAC_CORE_2_00,
-		.dev_id = DWXLGMAC_ID,
+		.userver = DWXLGMAC_ID,
 		.regs = {
 			.ptp_off = PTP_XGMAC_OFFSET,
 			.mmc_off = MMC_XGMAC_OFFSET,
@@ -291,7 +291,7 @@ static const struct stmmac_hwif_entry {
 };
 
 static const struct stmmac_hwif_entry *
-stmmac_hwif_find(enum dwmac_core_type core_type, u8 snpsver, u8 dev_id)
+stmmac_hwif_find(enum dwmac_core_type core_type, u8 snpsver, u8 userver)
 {
 	const struct stmmac_hwif_entry *entry;
 	int i;
@@ -305,7 +305,7 @@ stmmac_hwif_find(enum dwmac_core_type core_type, u8 snpsver, u8 dev_id)
 		if (snpsver < entry->min_snpsver)
 			continue;
 		if (core_type == DWMAC_CORE_XGMAC &&
-		    dev_id != entry->dev_id)
+		    userver != entry->userver)
 			continue;
 
 		return entry;
@@ -358,7 +358,7 @@ int stmmac_hwif_init(struct stmmac_priv *priv)
 	/* Fallback to generic HW */
 
 	/* Use synopsys_id var because some setups can override this */
-	entry = stmmac_hwif_find(core_type, priv->synopsys_id, version.dev_id);
+	entry = stmmac_hwif_find(core_type, priv->synopsys_id, version.userver);
 	if (!entry) {
 		dev_err(priv->device,
 			"Failed to find HW IF (id=0x%x, gmac=%d/%d)\n",
-- 
2.47.3


  parent reply	other threads:[~2026-04-08  9:27 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-08  9:26 [PATCH RFC net-next 00/10] net: stmmac: clean up / fix synopsys IP version checks Russell King (Oracle)
2026-04-08  9:26 ` [PATCH RFC net-next 01/10] net: stmmac: rename min_id to min_snpsver Russell King (Oracle)
2026-04-08  9:26 ` Russell King (Oracle) [this message]
2026-04-08  9:26 ` [PATCH RFC net-next 03/10] net: stmmac: always fill in ver->userver Russell King (Oracle)
2026-04-08  9:26 ` [PATCH RFC net-next 04/10] net: stmmac: use ver->userver and ver->snpsver to print version Russell King (Oracle)
2026-04-08  9:27 ` [PATCH RFC net-next 05/10] net: stmmac: rename confusing synopsys_id Russell King (Oracle)
2026-04-08  9:27 ` [PATCH RFC net-next 06/10] net: stmmac: dche is only for GMAC4 cores Russell King (Oracle)
2026-04-08  9:27 ` [PATCH RFC net-next 07/10] net: stmmac: limit MAC .debug() to dwmac1000 and dwmac4 Russell King (Oracle)
2026-04-08  9:27 ` [PATCH RFC net-next 08/10] net: stmmac: simplify stmmac_get_ethtool_stats() Russell King (Oracle)
2026-04-08  9:27 ` [PATCH RFC net-next 09/10] net: stmmac: clean up test for rx_coe debug printing Russell King (Oracle)
2026-04-08  9:27 ` [PATCH RFC net-next 10/10] net: stmmac: only print receive COE type for GMAC cores Russell King (Oracle)

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