drivers/net/sandbox-raw.c

   1 /*
   2  * Copyright (c) 2015 National Instruments
   3  *
   4  * (C) Copyright 2015
   5  * Joe Hershberger <joe.hershberger@ni.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0
   8  */
   9
  10 #include <asm/eth-raw-os.h>
  11 #include <common.h>
  12 #include <dm.h>
  13 #include <malloc.h>
  14 #include <net.h>
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18
  19 static int sb_eth_raw_start(struct udevice *dev)
  20 {
  21         struct eth_sandbox_raw_priv *priv = dev_get_priv(dev);
  22         struct eth_pdata *pdata = dev_get_platdata(dev);
  23         const char *interface;
  24
  25         debug("eth_sandbox_raw: Start\n");
  26
  27         interface = fdt_getprop(gd->fdt_blob, dev->of_offset,
  28                                             "host-raw-interface", NULL);
  29         if (interface == NULL)
  30                 return -EINVAL;
  31
  32         return sandbox_eth_raw_os_start(interface, pdata->enetaddr, priv);
  33 }
  34
  35 static int sb_eth_raw_send(struct udevice *dev, void *packet, int length)
  36 {
  37         struct eth_sandbox_raw_priv *priv = dev_get_priv(dev);
  38
  39         debug("eth_sandbox_raw: Send packet %d\n", length);
  40
  41         return sandbox_eth_raw_os_send(packet, length, priv);
  42 }
  43
  44 static int sb_eth_raw_recv(struct udevice *dev, uchar **packetp)
  45 {
  46         struct eth_sandbox_raw_priv *priv = dev_get_priv(dev);
  47         int retval;
  48         int length;
  49
  50         retval = sandbox_eth_raw_os_recv(net_rx_packets[0], &length, priv);
  51
  52         if (!retval && length) {
  53                 debug("eth_sandbox_raw: received packet %d\n",
  54                       length);
  55                 *packetp = net_rx_packets[0];
  56                 return length;
  57         }
  58         return retval;
  59 }
  60
  61 static void sb_eth_raw_stop(struct udevice *dev)
  62 {
  63         struct eth_sandbox_raw_priv *priv = dev_get_priv(dev);
  64
  65         debug("eth_sandbox_raw: Stop\n");
  66
  67         sandbox_eth_raw_os_stop(priv);
  68 }
  69
  70 static const struct eth_ops sb_eth_raw_ops = {
  71         .start                  = sb_eth_raw_start,
  72         .send                   = sb_eth_raw_send,
  73         .recv                   = sb_eth_raw_recv,
  74         .stop                   = sb_eth_raw_stop,
  75 };
  76
  77 static int sb_eth_raw_ofdata_to_platdata(struct udevice *dev)
  78 {
  79         struct eth_pdata *pdata = dev_get_platdata(dev);
  80
  81         pdata->iobase = dev_get_addr(dev);
  82         return 0;
  83 }
  84
  85 static const struct udevice_id sb_eth_raw_ids[] = {
  86         { .compatible = "sandbox,eth-raw" },
  87         { }
  88 };
  89
  90 U_BOOT_DRIVER(eth_sandbox_raw) = {
  91         .name   = "eth_sandbox_raw",
  92         .id     = UCLASS_ETH,
  93         .of_match = sb_eth_raw_ids,
  94         .ofdata_to_platdata = sb_eth_raw_ofdata_to_platdata,
  95         .ops    = &sb_eth_raw_ops,
  96         .priv_auto_alloc_size = sizeof(struct eth_sandbox_raw_priv),
  97         .platdata_auto_alloc_size = sizeof(struct eth_pdata),
  98 };