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drivers: net: fsl_enetc: Pass on primary MAC address to Linux

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Passes on the primary address used by u-boot to Linux. The code does a DT
fix-up for ENETC PFs and sets the primary MAC address in IERB. The address
in IERB is restored on ENETC PCI functions at FLR.

Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
This commit is contained in:
Alex Marginean 2019-12-10 16:55:39 +02:00 committed by Priyanka Jain
parent 2c871f9e08
commit 9c2aee1b19
3 changed files with 72 additions and 1 deletions
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5
board/freescale/ls1028a/ls1028a.c
View File

@ -25,6 +25,7 @@
#include <fdtdec.h>
#include <miiphy.h>
#include "../common/qixis.h"
#include "../drivers/net/fsl_enetc.h"
DECLARE_GLOBAL_DATA_PTR;
@ -162,6 +163,10 @@ int ft_board_setup(void *blob, bd_t *bd)
fdt_fixup_icid(blob);
#ifdef CONFIG_FSL_ENETC
fdt_fixup_enetc_mac(blob);
#endif
return 0;
}
#endif

65
drivers/net/fsl_enetc.c
View File

@ -14,6 +14,69 @@
#include "fsl_enetc.h"
#define ENETC_DRIVER_NAME "enetc_eth"
/*
* sets the MAC address in IERB registers, this setting is persistent and
* carried over to Linux.
*/
static void enetc_set_ierb_primary_mac(struct udevice *dev, int devfn,
const u8 *enetaddr)
{
#ifdef CONFIG_ARCH_LS1028A
/*
* LS1028A is the only part with IERB at this time and there are plans to change
* its structure, keep this LS1028A specific for now
*/
#define IERB_BASE 0x1f0800000ULL
#define IERB_PFMAC(pf, vf, n) (IERB_BASE + 0x8000 + (pf) * 0x100 + (vf) * 8 \
+ (n) * 4)
static int ierb_fn_to_pf[] = {0, 1, 2, -1, -1, -1, 3};
u16 lower = *(const u16 *)(enetaddr + 4);
u32 upper = *(const u32 *)enetaddr;
if (ierb_fn_to_pf[devfn] < 0)
return;
out_le32(IERB_PFMAC(ierb_fn_to_pf[devfn], 0, 0), upper);
out_le32(IERB_PFMAC(ierb_fn_to_pf[devfn], 0, 1), (u32)lower);
#endif
}
/* sets up primary MAC addresses in DT/IERB */
void fdt_fixup_enetc_mac(void *blob)
{
struct pci_child_platdata *ppdata;
struct eth_pdata *pdata;
struct udevice *dev;
struct uclass *uc;
char path[256];
int offset;
int devfn;
uclass_get(UCLASS_ETH, &uc);
uclass_foreach_dev(dev, uc) {
if (!dev->driver || !dev->driver->name ||
strcmp(dev->driver->name, ENETC_DRIVER_NAME))
continue;
pdata = dev_get_platdata(dev);
ppdata = dev_get_parent_platdata(dev);
devfn = PCI_FUNC(ppdata->devfn);
enetc_set_ierb_primary_mac(dev, devfn, pdata->enetaddr);
snprintf(path, 256, "/soc/pcie@1f0000000/ethernet@%x,%x",
PCI_DEV(ppdata->devfn), PCI_FUNC(ppdata->devfn));
offset = fdt_path_offset(blob, path);
if (offset < 0)
continue;
fdt_setprop(blob, offset, "mac-address", pdata->enetaddr, 6);
}
}
/*
* Bind the device:
* - set a more explicit name on the interface
@ -551,7 +614,7 @@ static const struct eth_ops enetc_ops = {
};
U_BOOT_DRIVER(eth_enetc) = {
.name = "enetc_eth",
.name = ENETC_DRIVER_NAME,
.id = UCLASS_ETH,
.bind = enetc_bind,
.probe = enetc_probe,

3
drivers/net/fsl_enetc.h
View File

@ -227,4 +227,7 @@ int enetc_mdio_read_priv(struct enetc_mdio_priv *priv, int addr, int devad,
int enetc_mdio_write_priv(struct enetc_mdio_priv *priv, int addr, int devad,
int reg, u16 val);
/* sets up primary MAC addresses in DT/IERB */
void fdt_fixup_enetc_mac(void *blob);
#endif /* _ENETC_H */