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Date: Sat, 6 Apr 2024 21:24:39 +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@...ngson.cn,
linux@...linux.org.uk,
guyinggang@...ngson.cn,
netdev@...r.kernel.org,
chris.chenfeiyang@...il.com,
siyanteng01@...il.com
Subject: [PATCH net-next v9 5/6] net: stmmac: dwmac-loongson: Add full PCI support
Current dwmac-loongson only support LS2K in the "probed with PCI and
configured with DT" manner. Add LS7A support on which the devices are
fully PCI (non-DT).
Others:
LS2K is a SoC and LS7A is a bridge chip. In the current driving state,
they are both gmac and phy_interface is RGMII.
Signed-off-by: Yanteng Si <siyanteng@...ngson.cn>
Signed-off-by: Feiyang Chen <chenfeiyang@...ngson.cn>
Signed-off-by: Yinggang Gu <guyinggang@...ngson.cn>
---
.../ethernet/stmicro/stmmac/dwmac-loongson.c | 103 +++++++++++-------
1 file changed, 64 insertions(+), 39 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index 20ddbf0dc6ab..84ead5edd6d0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -9,9 +9,19 @@
#include <linux/of_irq.h>
#include "stmmac.h"
+#define PCI_DEVICE_ID_LOONGSON_GMAC 0x7a03
+
+struct stmmac_pci_info {
+ int (*setup)(struct pci_dev *pdev, struct plat_stmmacenet_data *plat);
+};
+
static void loongson_default_data(struct pci_dev *pdev,
struct plat_stmmacenet_data *plat)
{
+ /* Get bus_id, this can be overloaded later */
+ plat->bus_id = (pci_domain_nr(pdev->bus) << 16) |
+ PCI_DEVID(pdev->bus->number, pdev->devfn);
+
plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
plat->has_gmac = 1;
plat->force_sf_dma_mode = 1;
@@ -40,6 +50,7 @@ static int loongson_gmac_data(struct pci_dev *pdev,
/* Default to phy auto-detection */
plat->phy_addr = -1;
+ plat->phy_interface = PHY_INTERFACE_MODE_RGMII_ID;
plat->dma_cfg->pbl = 32;
plat->dma_cfg->pblx8 = true;
@@ -54,19 +65,17 @@ static int loongson_gmac_data(struct pci_dev *pdev,
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;
+ int ret, i, bus_id, phy_mode;
+ struct stmmac_pci_info *info;
struct stmmac_resources res;
struct device_node *np;
- int ret, i, phy_mode;
-
- np = dev_of_node(&pdev->dev);
-
- if (!np) {
- pr_info("dwmac_loongson_pci: No OF node\n");
- return -ENODEV;
- }
plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
if (!plat)
@@ -78,12 +87,6 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
if (!plat->mdio_bus_data)
return -ENOMEM;
- plat->mdio_node = of_get_child_by_name(np, "mdio");
- if (plat->mdio_node) {
- dev_info(&pdev->dev, "Found MDIO subnode\n");
- plat->mdio_bus_data->needs_reset = true;
- }
-
plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg), GFP_KERNEL);
if (!plat->dma_cfg) {
ret = -ENOMEM;
@@ -107,10 +110,6 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
break;
}
- plat->bus_id = of_alias_get_id(np, "ethernet");
- if (plat->bus_id < 0)
- plat->bus_id = pci_dev_id(pdev);
-
phy_mode = device_get_phy_mode(&pdev->dev);
if (phy_mode < 0) {
dev_err(&pdev->dev, "phy_mode not found\n");
@@ -122,30 +121,56 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
pci_set_master(pdev);
- loongson_gmac_data(pdev, plat);
- pci_enable_msi(pdev);
- memset(&res, 0, sizeof(res));
- res.addr = pcim_iomap_table(pdev)[0];
-
- res.irq = of_irq_get_byname(np, "macirq");
- if (res.irq < 0) {
- dev_err(&pdev->dev, "IRQ macirq not found\n");
- ret = -ENODEV;
- goto err_disable_msi;
- }
+ info = (struct stmmac_pci_info *)id->driver_data;
+ ret = info->setup(pdev, plat);
+ if (ret)
+ goto err_disable_device;
- res.wol_irq = of_irq_get_byname(np, "eth_wake_irq");
- if (res.wol_irq < 0) {
- dev_info(&pdev->dev, "IRQ eth_wake_irq not found, using macirq\n");
- res.wol_irq = res.irq;
+ if (np) {
+ plat->mdio_node = of_get_child_by_name(np, "mdio");
+ if (plat->mdio_node) {
+ dev_info(&pdev->dev, "Found MDIO subnode\n");
+ plat->mdio_bus_data->needs_reset = true;
+ }
+
+ bus_id = of_alias_get_id(np, "ethernet");
+ if (bus_id >= 0)
+ plat->bus_id = bus_id;
+
+ phy_mode = device_get_phy_mode(&pdev->dev);
+ if (phy_mode < 0) {
+ dev_err(&pdev->dev, "phy_mode not found\n");
+ ret = phy_mode;
+ goto err_disable_device;
+ }
+ plat->phy_interface = phy_mode;
+
+ res.irq = of_irq_get_byname(np, "macirq");
+ if (res.irq < 0) {
+ dev_err(&pdev->dev, "IRQ macirq not found\n");
+ ret = -ENODEV;
+ goto err_disable_msi;
+ }
+
+ res.wol_irq = of_irq_get_byname(np, "eth_wake_irq");
+ if (res.wol_irq < 0) {
+ dev_info(&pdev->dev, "IRQ eth_wake_irq not found, using macirq\n");
+ res.wol_irq = res.irq;
+ }
+
+ res.lpi_irq = of_irq_get_byname(np, "eth_lpi");
+ if (res.lpi_irq < 0) {
+ dev_err(&pdev->dev, "IRQ eth_lpi not found\n");
+ ret = -ENODEV;
+ goto err_disable_msi;
+ }
+ } else {
+ res.irq = pdev->irq;
}
- res.lpi_irq = of_irq_get_byname(np, "eth_lpi");
- if (res.lpi_irq < 0) {
- dev_err(&pdev->dev, "IRQ eth_lpi not found\n");
- ret = -ENODEV;
- goto err_disable_msi;
- }
+ pci_enable_msi(pdev);
+ memset(&res, 0, sizeof(res));
+ res.addr = pcim_iomap_table(pdev)[0];
ret = stmmac_dvr_probe(&pdev->dev, plat, &res);
if (ret)
--
2.31.4
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