linux-kernel - [PATCH net-next v5 3/5] net: stmmac: Integrate dw25gmac into stmmac hwif handling

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Message-Id: <20240904054815.1341712-4-jitendra.vegiraju@broadcom.com>
Date: Tue,  3 Sep 2024 22:48:13 -0700
From: jitendra.vegiraju@...adcom.com
To: netdev@...r.kernel.org
Cc: alexandre.torgue@...s.st.com,
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Subject: [PATCH net-next v5 3/5] net: stmmac: Integrate dw25gmac into stmmac hwif handling

From: Jitendra Vegiraju <jitendra.vegiraju@...adcom.com>

Integrate dw25gmac support into stmmac hardware interface handling.
Added a new entry to the stmmac_hw table in hwif.c.
Since BCM8958x is an early adopter device, the synopsis_id reported in HW
is 0x32 and device_id is DWXGMAC_ID. Provide override support by giving
preference to snps_id, snps_dev_id values when initialized to non-zero
values by glue driver.

Signed-off-by: Jitendra Vegiraju <jitendra.vegiraju@...adcom.com>
---
 drivers/net/ethernet/stmicro/stmmac/hwif.c | 26 +++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.c b/drivers/net/ethernet/stmicro/stmmac/hwif.c
index 29367105df54..ad76dbab6622 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.c
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.c
@@ -257,6 +257,27 @@ static const struct stmmac_hwif_entry {
 		.est = &dwmac510_est_ops,
 		.setup = dwxgmac2_setup,
 		.quirks = NULL,
+	}, {
+		.gmac = false,
+		.gmac4 = false,
+		.xgmac = true,
+		.min_id = DW25GMAC_CORE_4_00,
+		.dev_id = DW25GMAC_ID,
+		.regs = {
+			.ptp_off = PTP_XGMAC_OFFSET,
+			.mmc_off = MMC_XGMAC_OFFSET,
+			.est_off = EST_XGMAC_OFFSET,
+		},
+		.desc = &dwxgmac210_desc_ops,
+		.dma = &dw25gmac400_dma_ops,
+		.mac = &dwxgmac210_ops,
+		.hwtimestamp = &stmmac_ptp,
+		.mode = NULL,
+		.tc = &dwmac510_tc_ops,
+		.mmc = &dwxgmac_mmc_ops,
+		.est = &dwmac510_est_ops,
+		.setup = dw25gmac_setup,
+		.quirks = NULL,
 	}, {
 		.gmac = false,
 		.gmac4 = false,
@@ -292,7 +313,10 @@ int stmmac_hwif_init(struct stmmac_priv *priv)
 	u32 id, dev_id = 0;
 	int i, ret;
 
-	if (needs_gmac) {
+	if (priv->plat->snps_id && priv->plat->snps_dev_id) {
+		id = priv->plat->snps_id;
+		dev_id = priv->plat->snps_dev_id;
+	} else if (needs_gmac) {
 		id = stmmac_get_id(priv, GMAC_VERSION);
 	} else if (needs_gmac4 || needs_xgmac) {
 		id = stmmac_get_id(priv, GMAC4_VERSION);
-- 
2.34.1