LXR uboot/drivers/net/cpsw-common.c

   1/*
   2 * CPSW common - libs used across TI ethernet devices.
   3 *
   4 * Copyright (C) 2016, Texas Instruments, Incorporated
   5 *
   6 * SPDX-License-Identifier: GPL-2.0+
   7 */
   8
   9#include <common.h>
  10#include <dm.h>
  11#include <fdt_support.h>
  12#include <asm/io.h>
  13#include <cpsw.h>
  14
  15DECLARE_GLOBAL_DATA_PTR;
  16
  17#define CTRL_MAC_REG(offset, id) ((offset) + 0x8 * (id))
  18
  19static int davinci_emac_3517_get_macid(struct udevice *dev, u16 offset,
  20                                       int slave, u8 *mac_addr)
  21{
  22        void *fdt = (void *)gd->fdt_blob;
  23        int node = dev->of_offset;
  24        u32 macid_lsb;
  25        u32 macid_msb;
  26        fdt32_t gmii = 0;
  27        int syscon;
  28        u32 addr;
  29
  30        syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
  31        if (syscon < 0) {
  32                error("Syscon offset not found\n");
  33                return -ENOENT;
  34        }
  35
  36        addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
  37                                sizeof(u32), MAP_NOCACHE);
  38        if (addr == FDT_ADDR_T_NONE) {
  39                error("Not able to get syscon address to get mac efuse address\n");
  40                return -ENOENT;
  41        }
  42
  43        addr += CTRL_MAC_REG(offset, slave);
  44
  45        /* try reading mac address from efuse */
  46        macid_lsb = readl(addr);
  47        macid_msb = readl(addr + 4);
  48
  49        mac_addr[0] = (macid_msb >> 16) & 0xff;
  50        mac_addr[1] = (macid_msb >> 8)  & 0xff;
  51        mac_addr[2] = macid_msb & 0xff;
  52        mac_addr[3] = (macid_lsb >> 16) & 0xff;
  53        mac_addr[4] = (macid_lsb >> 8)  & 0xff;
  54        mac_addr[5] = macid_lsb & 0xff;
  55
  56        return 0;
  57}
  58
  59static int cpsw_am33xx_cm_get_macid(struct udevice *dev, u16 offset, int slave,
  60                                    u8 *mac_addr)
  61{
  62        void *fdt = (void *)gd->fdt_blob;
  63        int node = dev->of_offset;
  64        u32 macid_lo;
  65        u32 macid_hi;
  66        fdt32_t gmii = 0;
  67        int syscon;
  68        u32 addr;
  69
  70        syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
  71        if (syscon < 0) {
  72                error("Syscon offset not found\n");
  73                return -ENOENT;
  74        }
  75
  76        addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
  77                                sizeof(u32), MAP_NOCACHE);
  78        if (addr == FDT_ADDR_T_NONE) {
  79                error("Not able to get syscon address to get mac efuse address\n");
  80                return -ENOENT;
  81        }
  82
  83        addr += CTRL_MAC_REG(offset, slave);
  84
  85        /* try reading mac address from efuse */
  86        macid_lo = readl(addr);
  87        macid_hi = readl(addr + 4);
  88
  89        mac_addr[5] = (macid_lo >> 8) & 0xff;
  90        mac_addr[4] = macid_lo & 0xff;
  91        mac_addr[3] = (macid_hi >> 24) & 0xff;
  92        mac_addr[2] = (macid_hi >> 16) & 0xff;
  93        mac_addr[1] = (macid_hi >> 8) & 0xff;
  94        mac_addr[0] = macid_hi & 0xff;
  95
  96        return 0;
  97}
  98
  99int ti_cm_get_macid(struct udevice *dev, int slave, u8 *mac_addr)
 100{
 101        if (of_machine_is_compatible("ti,dm8148"))
 102                return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
 103
 104        if (of_machine_is_compatible("ti,am33xx"))
 105                return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
 106
 107        if (of_device_is_compatible(dev, "ti,am3517-emac"))
 108                return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr);
 109
 110        if (of_device_is_compatible(dev, "ti,dm816-emac"))
 111                return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr);
 112
 113        if (of_machine_is_compatible("ti,am4372"))
 114                return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
 115
 116        if (of_machine_is_compatible("ti,dra7"))
 117                return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr);
 118
 119        dev_err(dev, "incompatible machine/device type for reading mac address\n");
 120        return -ENOENT;
 121}
 122