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
next prev 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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