netdev - [PATCH net-next v13 09/15] net: stmmac: dwmac-loongson: Introduce PCI device info data

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Date: Wed, 29 May 2024 18:19:48 +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,
	si.yanteng@...ux.dev
Subject: [PATCH net-next v13 09/15] net: stmmac: dwmac-loongson: Introduce PCI device info data

Just introduce PCI device info data to prepare for later
ACPI-base support. Loongson machines may use UEFI (implies
ACPI) or PMON/UBOOT (implies FDT) as the BIOS.

The BIOS type has no relationship with device types, which
means: machines can be either ACPI-based or FDT-based.

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    | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index 0289956e274b..fec2aa0607d4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -11,6 +11,10 @@
 
 #define PCI_DEVICE_ID_LOONGSON_GMAC	0x7a03
 
+struct stmmac_pci_info {
+	int (*setup)(struct plat_stmmacenet_data *plat);
+};
+
 static void loongson_default_data(struct plat_stmmacenet_data *plat)
 {
 	plat->clk_csr = 2;	/* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
@@ -54,9 +58,14 @@ static int loongson_gmac_data(struct plat_stmmacenet_data *plat)
 	return 0;
 }
 
+static struct stmmac_pci_info loongson_gmac_pci_info = {
+	.setup = loongson_gmac_data,
+};
+
 static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct plat_stmmacenet_data *plat;
+	struct stmmac_pci_info *info;
 	struct stmmac_resources res;
 	struct device_node *np;
 	int ret, i, phy_mode;
@@ -107,6 +116,11 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
 		break;
 	}
 
+	info = (struct stmmac_pci_info *)id->driver_data;
+	ret = info->setup(plat);
+	if (ret)
+		goto err_disable_device;
+
 	plat->bus_id = of_alias_get_id(np, "ethernet");
 	if (plat->bus_id < 0)
 		plat->bus_id = pci_dev_id(pdev);
@@ -122,7 +136,6 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
 
 	pci_set_master(pdev);
 
-	loongson_gmac_data(plat);
 	pci_enable_msi(pdev);
 	memset(&res, 0, sizeof(res));
 	res.addr = pcim_iomap_table(pdev)[0];
@@ -224,7 +237,7 @@ static SIMPLE_DEV_PM_OPS(loongson_dwmac_pm_ops, loongson_dwmac_suspend,
 			 loongson_dwmac_resume);
 
 static const struct pci_device_id loongson_dwmac_id_table[] = {
-	{ PCI_DEVICE_DATA(LOONGSON, GMAC, NULL) },
+	{ PCI_DEVICE_DATA(LOONGSON, GMAC, &loongson_gmac_pci_info) },
 	{}
 };
 MODULE_DEVICE_TABLE(pci, loongson_dwmac_id_table);
-- 
2.31.4