netdev - [PATCH net-next v11 4/6] net: stmmac: dwmac-loongson: Introduce GMAC setup

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Message-Id: <6f0ac42c1b60db318b7d746254a9b310dd03aa32.1712917541.git.siyanteng@loongson.cn>
Date: Fri, 12 Apr 2024 19:28:49 +0800
From: Yanteng Si <siyanteng@...ngson.cn>
To: andrew@...n.ch,
	hkallweit1@...il.com,
	peppe.cavallaro@...com,
	alexandre.torgue@...s.st.com,
	joabreu@...opsys.com,
	fancer.lancer@...il.com
Cc: Yanteng Si <siyanteng@...ngson.cn>,
	Jose.Abreu@...opsys.com,
	chenhuacai@...nel.org,
	linux@...linux.org.uk,
	guyinggang@...ngson.cn,
	netdev@...r.kernel.org,
	chris.chenfeiyang@...il.com,
	siyanteng01@...il.com
Subject: [PATCH net-next v11 4/6] net: stmmac: dwmac-loongson: Introduce GMAC setup

Based on IP core classification, loongson has two types of network
devices: GMAC and GNET. GMAC's ip_core id is 0x35/0x37, while GNET's
ip_core id is 0x37/0x10.

Device tables:

device    type    pci_id    ip_core
ls2k1000  gmac    7a03      0x35/0x37
ls7a1000  gmac    7a03      0x35/0x37
ls2k2000  gnet    7a13      0x10
ls7a2000  gnet    7a13      0x37

The ref/ptp clock of gmac is 125000000. gmac device only
has a MAC chip inside and needs an external PHY chip;

Signed-off-by: Feiyang Chen <chenfeiyang@...ngson.cn>
Signed-off-by: Yinggang Gu <guyinggang@...ngson.cn>
Signed-off-by: Yanteng Si <siyanteng@...ngson.cn>
---
 .../ethernet/stmicro/stmmac/dwmac-loongson.c  | 21 +++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index 995c9bd144e0..ad19b4087974 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -9,7 +9,8 @@
 #include <linux/of_irq.h>
 #include "stmmac.h"
 
-static int loongson_default_data(struct plat_stmmacenet_data *plat)
+static void loongson_default_data(struct pci_dev *pdev,
+				  struct plat_stmmacenet_data *plat)
 {
 	plat->clk_csr = 2;	/* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
 	plat->has_gmac = 1;
@@ -24,16 +25,18 @@ static int loongson_default_data(struct plat_stmmacenet_data *plat)
 	/* Set the maxmtu to a default of JUMBO_LEN */
 	plat->maxmtu = JUMBO_LEN;
 
-	/* Set default number of RX and TX queues to use */
-	plat->tx_queues_to_use = 1;
-	plat->rx_queues_to_use = 1;
-
 	/* Disable Priority config by default */
 	plat->tx_queues_cfg[0].use_prio = false;
 	plat->rx_queues_cfg[0].use_prio = false;
 
 	/* Disable RX queues routing by default */
 	plat->rx_queues_cfg[0].pkt_route = 0x0;
+}
+
+static int loongson_gmac_data(struct pci_dev *pdev,
+			      struct plat_stmmacenet_data *plat)
+{
+	loongson_default_data(pdev, plat);
 
 	/* Default to phy auto-detection */
 	plat->phy_addr = -1;
@@ -42,6 +45,12 @@ static int loongson_default_data(struct plat_stmmacenet_data *plat)
 	plat->dma_cfg->pblx8 = true;
 
 	plat->multicast_filter_bins = 256;
+	plat->clk_ref_rate = 125000000;
+	plat->clk_ptp_rate = 125000000;
+
+	plat->tx_queues_to_use = 1;
+	plat->rx_queues_to_use = 1;
+
 	return 0;
 }
 
@@ -114,7 +123,7 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
 
 	pci_set_master(pdev);
 
-	loongson_default_data(plat);
+	loongson_gmac_data(pdev, plat);
 	pci_enable_msi(pdev);
 	memset(&res, 0, sizeof(res));
 	res.addr = pcim_iomap_table(pdev)[0];
-- 
2.31.4