[PATCH v2] net: designware: Support high memory nodes

[Nils Le Roux]

Some platforms (such as the Lichee Pi 4A) have their dwmac device
addressable only in high memory space. Storing the node's base address
on 32 bits is not possible in such case.

Use platform's physical address type to store the base address.

Signed-off-by: Nils Le Roux <gilbsgilbert at gmail.com>
Cc: Andre Przywara <andre.przywara at arm.com>
---

Changes in v2:
- explicitly define and handle ioaddr as a virtual address
- use an intermediate variable to assign the PCI base address
- use appropriate placeholder to print physical addresses
---
 drivers/net/designware.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index a174344b3e..78bfce07f6 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -678,8 +678,8 @@ int designware_eth_probe(struct udevice *dev)
 {
 	struct eth_pdata *pdata = dev_get_plat(dev);
 	struct dw_eth_dev *priv = dev_get_priv(dev);
-	u32 iobase = pdata->iobase;
-	ulong ioaddr;
+	phys_addr_t iobase = pdata->iobase;
+	void *ioaddr;
 	int ret, err;
 	struct reset_ctl_bulk reset_bulk;
 #ifdef CONFIG_CLK
@@ -740,16 +740,18 @@ int designware_eth_probe(struct udevice *dev)
 	 * or via a PCI bridge, fill in plat before we probe the hardware.
 	 */
 	if (IS_ENABLED(CONFIG_PCI) && device_is_on_pci_bus(dev)) {
-		dm_pci_read_config32(dev, PCI_BASE_ADDRESS_0, &iobase);
-		iobase &= PCI_BASE_ADDRESS_MEM_MASK;
-		iobase = dm_pci_mem_to_phys(dev, iobase);
+		u32 pcibase;
 
+		dm_pci_read_config32(dev, PCI_BASE_ADDRESS_0, &pcibase);
+		pcibase &= PCI_BASE_ADDRESS_MEM_MASK;
+
+		iobase = dm_pci_mem_to_phys(dev, pcibase);
 		pdata->iobase = iobase;
 		pdata->phy_interface = PHY_INTERFACE_MODE_RMII;
 	}
 
-	debug("%s, iobase=%x, priv=%p\n", __func__, iobase, priv);
-	ioaddr = iobase;
+	debug("%s, iobase=%pa, priv=%p\n", __func__, &iobase, priv);
+	ioaddr = phys_to_virt(iobase);
 	priv->mac_regs_p = (struct eth_mac_regs *)ioaddr;
 	priv->dma_regs_p = (struct eth_dma_regs *)(ioaddr + DW_DMA_BASE_OFFSET);
 	priv->interface = pdata->phy_interface;
-- 
2.43.0