From: Hanyuan Zhao <hanyuan-z@qq.com>
Date: Fri, 9 Aug 2024 08:56:54 +0000 (+0800)
Subject: net: dc2114x: add support for platforms that don't have pci controllers
X-Git-Url: http://git.dujemihanovic.xyz/%22/img/sics.gif/%22/static/git-favicon.png?a=commitdiff_plain;h=76146b90e770b4f309dbae19b1b26aff93d800e0;p=u-boot.git

net: dc2114x: add support for platforms that don't have pci controllers

There're a few ethernet IP cores which have the same functions with dc2114x,
and can be connected to CPU by AXI or other buses. This commit adds support
for the platforms that do not have PCI controllers, using MMIO to communicate
with the dc2114x IP core.

Signed-off-by: Hanyuan Zhao <zhaohy22@mails.tsinghua.edu.cn>
---

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 89f7411bdf..e27b4a78cd 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -762,6 +762,14 @@ config TULIP
 	help
 	  This driver supports DEC DC2114x Fast ethernet chips.
 
+config TULIP_SUPPORT_NON_PCI
+	bool "No PCI controller"
+	depends on TULIP
+	default n
+	help
+	  Say Y to this and you can run this driver on platforms that do not
+	  have PCI controllers.
+
 config XILINX_AXIEMAC
 	select PHYLIB
 	select MII
diff --git a/drivers/net/dc2114x.c b/drivers/net/dc2114x.c
index ce028f451f..3704d2e655 100644
--- a/drivers/net/dc2114x.c
+++ b/drivers/net/dc2114x.c
@@ -72,7 +72,12 @@
 
 #define POLL_DEMAND	1
 
+#if CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
+#define phys_to_bus(dev, a)	virt_to_phys((volatile const void *)(a))
+#else
 #define phys_to_bus(dev, a)	dm_pci_phys_to_mem((dev), (a))
+#endif
+#endif
 
 #define NUM_RX_DESC PKTBUFSRX
 #define NUM_TX_DESC 1			/* Number of TX descriptors   */
@@ -461,11 +466,13 @@ static void read_hw_addr(struct dc2114x_priv *priv)
 	}
 }
 
+#if !CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
 static struct pci_device_id supported[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21142) },
 	{ }
 };
+#endif
 
 static int dc2114x_start(struct udevice *dev)
 {
@@ -474,8 +481,10 @@ static int dc2114x_start(struct udevice *dev)
 
 	memcpy(priv->enetaddr, plat->enetaddr, sizeof(plat->enetaddr));
 
+#if !CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
 	/* Ensure we're not sleeping. */
 	dm_pci_write_config8(dev, PCI_CFDA_PSM, WAKEUP);
+#endif
 
 	return dc21x4x_init_common(priv);
 }
@@ -485,8 +494,9 @@ static void dc2114x_stop(struct udevice *dev)
 	struct dc2114x_priv *priv = dev_get_priv(dev);
 
 	dc21x4x_halt_common(priv);
-
+#if !CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
 	dm_pci_write_config8(dev, PCI_CFDA_PSM, SLEEP);
+#endif
 }
 
 static int dc2114x_send(struct udevice *dev, void *packet, int length)
@@ -555,6 +565,8 @@ static int dc2114x_probe(struct udevice *dev)
 {
 	struct eth_pdata *plat = dev_get_plat(dev);
 	struct dc2114x_priv *priv = dev_get_priv(dev);
+
+#if !CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
 	u16 command, status;
 	u32 iobase;
 
@@ -576,9 +588,22 @@ static int dc2114x_probe(struct udevice *dev)
 	}
 
 	dm_pci_write_config8(dev, PCI_LATENCY_TIMER, 0x60);
+#endif
+	return 0;
+}
+
+#if CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
+static int dc2114x_of_to_plat(struct udevice *dev)
+{
+	struct eth_pdata *plat = dev_get_plat(dev);
+	struct dc2114x_priv *priv = dev_get_priv(dev);
+
+	plat->iobase = (phys_addr_t)map_physmem((phys_addr_t)devfdt_get_addr(dev), 0, MAP_NOCACHE);
+	priv->iobase = (void*)plat->iobase;
 
 	return 0;
 }
+#endif
 
 static const struct eth_ops dc2114x_ops = {
 	.start		= dc2114x_start,
@@ -589,9 +614,23 @@ static const struct eth_ops dc2114x_ops = {
 	.read_rom_hwaddr = dc2114x_read_rom_hwaddr,
 };
 
+#if CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
+static const struct udevice_id dc2114x_eth_ids[] = {
+	{ .compatible = "dec,dmfe" },
+	{ .compatible = "tulip,dmfe" },
+	{ .compatible = "dec,dc2114x" },
+	{ .compatible = "tulip,dc2114x" },
+	{ }
+};
+#endif
+
 U_BOOT_DRIVER(eth_dc2114x) = {
 	.name	= "eth_dc2114x",
 	.id	= UCLASS_ETH,
+#if CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
+	.of_match	= dc2114x_eth_ids,
+	.of_to_plat	= dc2114x_of_to_plat,
+#endif
 	.bind	= dc2114x_bind,
 	.probe	= dc2114x_probe,
 	.ops	= &dc2114x_ops,
@@ -599,4 +638,6 @@ U_BOOT_DRIVER(eth_dc2114x) = {
 	.plat_auto	= sizeof(struct eth_pdata),
 };
 
+#if !CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
 U_BOOT_PCI_DEVICE(eth_dc2114x, supported);
+#endif