diff options
author | Alex Marginean <alexandru.marginean@nxp.com> | 2019-12-10 16:55:39 +0200 |
---|---|---|
committer | Priyanka Jain <priyanka.jain@nxp.com> | 2020-01-24 14:28:26 +0530 |
commit | 9c2aee1b1943f538e3f38e4884f186033e29831c (patch) | |
tree | 1f78df4a86d5bd4e7a2ace2a01d4f82139c654c9 /drivers/net/fsl_enetc.c | |
parent | 2c871f9e084b2c03d1961884228a6901387ab8d6 (diff) |
drivers: net: fsl_enetc: Pass on primary MAC address to Linux
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>
Diffstat (limited to 'drivers/net/fsl_enetc.c')
-rw-r--r-- | drivers/net/fsl_enetc.c | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/drivers/net/fsl_enetc.c b/drivers/net/fsl_enetc.c index 02c1ee70d9..f8fe7d4d8d 100644 --- a/drivers/net/fsl_enetc.c +++ b/drivers/net/fsl_enetc.c @@ -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, |