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 89f7411..e27b4a7 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -762,6 +762,14 @@
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 ce028f4..3704d2e 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 @@
}
}
+#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 @@
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 @@
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 @@
{
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 @@
}
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 @@
.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 @@
.plat_auto = sizeof(struct eth_pdata),
};
+#if !CONFIG_IS_ENABLED(TULIP_SUPPORT_NON_PCI)
U_BOOT_PCI_DEVICE(eth_dc2114x, supported);
+#endif