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

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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>
This commit is contained in:
Hanyuan Zhao
2024-08-09 16:56:54 +08:00
committed by Tom Rini
parent 8963d433eb
commit 76146b90e7
2 changed files with 50 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/Kconfig
View File

@@ -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

43
drivers/net/dc2114x.c
View File

@@ -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