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authorMugunthan V N <mugunthanvnm@ti.com>2016-04-28 15:36:07 +0530
committerJoe Hershberger <joe.hershberger@ni.com>2016-05-24 11:42:03 -0500
commite4310566deb7533301eb0de78d3640f4f307d267 (patch)
treea1a1f976cf83649427d7702060a4f69ca9dd7c3e
parent66e740cbbdc54b5785046fffa52ed197602d74b1 (diff)
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drivers: net: cpsw: add support for reading mac address from efuse
Different TI platforms has to read with different combination to get the mac address from efuse. So add support to read mac address based on machine/device compatibles. The code is taken from Linux drivers/net/ethernet/ti/cpsw-common.c done by Tony Lindgren. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
-rw-r--r--drivers/net/Makefile2
-rw-r--r--drivers/net/cpsw-common.c121
-rw-r--r--drivers/net/cpsw.c24
-rw-r--r--include/cpsw.h1
4 files changed, 131 insertions, 17 deletions
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index fbedd04..d5e4a97 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -59,7 +59,7 @@ obj-$(CONFIG_SMC91111) += smc91111.o
obj-$(CONFIG_SMC911X) += smc911x.o
obj-$(CONFIG_DRIVER_TI_EMAC) += davinci_emac.o
obj-$(CONFIG_TSEC_ENET) += tsec.o fsl_mdio.o
-obj-$(CONFIG_DRIVER_TI_CPSW) += cpsw.o
+obj-$(CONFIG_DRIVER_TI_CPSW) += cpsw.o cpsw-common.o
obj-$(CONFIG_FMAN_ENET) += fsl_mdio.o
obj-$(CONFIG_TSI108_ETH) += tsi108_eth.o
obj-$(CONFIG_ULI526X) += uli526x.o
diff --git a/drivers/net/cpsw-common.c b/drivers/net/cpsw-common.c
new file mode 100644
index 0000000..e828e85
--- /dev/null
+++ b/drivers/net/cpsw-common.c
@@ -0,0 +1,121 @@
+/*
+ * CPSW common - libs used across TI ethernet devices.
+ *
+ * Copyright (C) 2016, Texas Instruments, Incorporated
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdt_support.h>
+#include <asm/io.h>
+#include <cpsw.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define CTRL_MAC_REG(offset, id) ((offset) + 0x8 * (id))
+
+static int davinci_emac_3517_get_macid(struct udevice *dev, u16 offset,
+ int slave, u8 *mac_addr)
+{
+ void *fdt = (void *)gd->fdt_blob;
+ int node = dev->of_offset;
+ u32 macid_lsb;
+ u32 macid_msb;
+ fdt32_t gmii = 0;
+ int syscon;
+ u32 addr;
+
+ syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
+ if (syscon < 0) {
+ error("Syscon offset not found\n");
+ return -ENOENT;
+ }
+
+ addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
+ sizeof(u32), MAP_NOCACHE);
+ if (addr == FDT_ADDR_T_NONE) {
+ error("Not able to get syscon address to get mac efuse address\n");
+ return -ENOENT;
+ }
+
+ addr += CTRL_MAC_REG(offset, slave);
+
+ /* try reading mac address from efuse */
+ macid_lsb = readl(addr);
+ macid_msb = readl(addr + 4);
+
+ mac_addr[0] = (macid_msb >> 16) & 0xff;
+ mac_addr[1] = (macid_msb >> 8) & 0xff;
+ mac_addr[2] = macid_msb & 0xff;
+ mac_addr[3] = (macid_lsb >> 16) & 0xff;
+ mac_addr[4] = (macid_lsb >> 8) & 0xff;
+ mac_addr[5] = macid_lsb & 0xff;
+
+ return 0;
+}
+
+static int cpsw_am33xx_cm_get_macid(struct udevice *dev, u16 offset, int slave,
+ u8 *mac_addr)
+{
+ void *fdt = (void *)gd->fdt_blob;
+ int node = dev->of_offset;
+ u32 macid_lo;
+ u32 macid_hi;
+ fdt32_t gmii = 0;
+ int syscon;
+ u32 addr;
+
+ syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
+ if (syscon < 0) {
+ error("Syscon offset not found\n");
+ return -ENOENT;
+ }
+
+ addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
+ sizeof(u32), MAP_NOCACHE);
+ if (addr == FDT_ADDR_T_NONE) {
+ error("Not able to get syscon address to get mac efuse address\n");
+ return -ENOENT;
+ }
+
+ addr += CTRL_MAC_REG(offset, slave);
+
+ /* try reading mac address from efuse */
+ macid_lo = readl(addr);
+ macid_hi = readl(addr + 4);
+
+ mac_addr[5] = (macid_lo >> 8) & 0xff;
+ mac_addr[4] = macid_lo & 0xff;
+ mac_addr[3] = (macid_hi >> 24) & 0xff;
+ mac_addr[2] = (macid_hi >> 16) & 0xff;
+ mac_addr[1] = (macid_hi >> 8) & 0xff;
+ mac_addr[0] = macid_hi & 0xff;
+
+ return 0;
+}
+
+int ti_cm_get_macid(struct udevice *dev, int slave, u8 *mac_addr)
+{
+ if (of_machine_is_compatible("ti,dm8148"))
+ return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
+
+ if (of_machine_is_compatible("ti,am33xx"))
+ return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
+
+ if (of_device_is_compatible(dev, "ti,am3517-emac"))
+ return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr);
+
+ if (of_device_is_compatible(dev, "ti,dm816-emac"))
+ return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr);
+
+ if (of_machine_is_compatible("ti,am4372"))
+ return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
+
+ if (of_machine_is_compatible("ti,dra7"))
+ return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr);
+
+ dev_err(dev, "incompatible machine/device type for reading mac address\n");
+ return -ENOENT;
+}
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c
index 9b1e37b..b811119 100644
--- a/drivers/net/cpsw.c
+++ b/drivers/net/cpsw.c
@@ -26,6 +26,7 @@
#include <phy.h>
#include <asm/arch/cpu.h>
#include <dm.h>
+#include <fdt_support.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -1151,9 +1152,8 @@ static int cpsw_eth_ofdata_to_platdata(struct udevice *dev)
int node = dev->of_offset;
int subnode;
int slave_index = 0;
- uint32_t mac_hi, mac_lo;
- fdt32_t gmii = 0;
int active_slave;
+ int ret;
pdata->iobase = dev_get_addr(dev);
priv->data.version = CPSW_CTRL_VERSION_2;
@@ -1250,20 +1250,11 @@ static int cpsw_eth_ofdata_to_platdata(struct udevice *dev)
priv->data.slave_data[1].sliver_reg_ofs = CPSW_SLIVER1_OFFSET;
}
- subnode = fdtdec_lookup_phandle(fdt, node, "syscon");
- priv->data.mac_id = fdt_translate_address((void *)fdt, subnode, &gmii);
- priv->data.mac_id += AM335X_GMII_SEL_OFFSET;
- priv->data.mac_id += active_slave * 8;
-
- /* try reading mac address from efuse */
- mac_lo = readl(priv->data.mac_id);
- mac_hi = readl(priv->data.mac_id + 4);
- pdata->enetaddr[0] = mac_hi & 0xFF;
- pdata->enetaddr[1] = (mac_hi & 0xFF00) >> 8;
- pdata->enetaddr[2] = (mac_hi & 0xFF0000) >> 16;
- pdata->enetaddr[3] = (mac_hi & 0xFF000000) >> 24;
- pdata->enetaddr[4] = mac_lo & 0xFF;
- pdata->enetaddr[5] = (mac_lo & 0xFF00) >> 8;
+ ret = ti_cm_get_macid(dev, active_slave, pdata->enetaddr);
+ if (ret < 0) {
+ error("cpsw read efuse mac failed\n");
+ return ret;
+ }
pdata->phy_interface = priv->data.slave_data[active_slave].phy_if;
if (pdata->phy_interface == -1) {
@@ -1284,6 +1275,7 @@ static int cpsw_eth_ofdata_to_platdata(struct udevice *dev)
writel(RGMII_MODE_ENABLE, priv->data.gmii_sel);
break;
}
+
return 0;
}
diff --git a/include/cpsw.h b/include/cpsw.h
index cf1d30b..6255cd8 100644
--- a/include/cpsw.h
+++ b/include/cpsw.h
@@ -51,5 +51,6 @@ struct cpsw_platform_data {
};
int cpsw_register(struct cpsw_platform_data *data);
+int ti_cm_get_macid(struct udevice *dev, int slave, u8 *mac_addr);
#endif /* _CPSW_H_ */