target/linux/brcm63xx/files/arch/mips/bcm63xx/dev-enet.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/platform_device.h>
  12 #include <bcm63xx_dev_enet.h>
  13 #include <bcm63xx_io.h>
  14 #include <bcm63xx_regs.h>
  15
  16 static struct resource shared_res[] = {
  17         {
  18                 .start          = -1, /* filled at runtime */
  19                 .end            = -1, /* filled at runtime */
  20                 .flags          = IORESOURCE_MEM,
  21         },
  22 };
  23
  24 static struct platform_device bcm63xx_enet_shared_device = {
  25         .name           = "bcm63xx_enet_shared",
  26         .id             = 0,
  27         .num_resources  = ARRAY_SIZE(shared_res),
  28         .resource       = shared_res,
  29 };
  30
  31 static int shared_device_registered = 0;
  32
  33 static struct resource enet0_res[] = {
  34         {
  35                 .start          = -1, /* filled at runtime */
  36                 .end            = -1, /* filled at runtime */
  37                 .flags          = IORESOURCE_MEM,
  38         },
  39         {
  40                 .start          = -1, /* filled at runtime */
  41                 .flags          = IORESOURCE_IRQ,
  42         },
  43         {
  44                 .start          = -1, /* filled at runtime */
  45                 .start          = IRQ_ENET0_RXDMA,
  46                 .flags          = IORESOURCE_IRQ,
  47         },
  48         {
  49                 .start          = -1, /* filled at runtime */
  50                 .start          = IRQ_ENET0_TXDMA,
  51                 .flags          = IORESOURCE_IRQ,
  52         },
  53 };
  54
  55 static struct bcm63xx_enet_platform_data enet0_pd;
  56
  57 static struct platform_device bcm63xx_enet0_device = {
  58         .name           = "bcm63xx_enet",
  59         .id             = 0,
  60         .num_resources  = ARRAY_SIZE(enet0_res),
  61         .resource       = enet0_res,
  62         .dev            = {
  63                 .platform_data = &enet0_pd,
  64         },
  65 };
  66
  67 static struct resource enet1_res[] = {
  68         {
  69                 .start          = -1, /* filled at runtime */
  70                 .end            = -1, /* filled at runtime */
  71                 .flags          = IORESOURCE_MEM,
  72         },
  73         {
  74                 .start          = -1, /* filled at runtime */
  75                 .flags          = IORESOURCE_IRQ,
  76         },
  77         {
  78                 .start          = -1, /* filled at runtime */
  79                 .flags          = IORESOURCE_IRQ,
  80         },
  81         {
  82                 .start          = -1, /* filled at runtime */
  83                 .flags          = IORESOURCE_IRQ,
  84         },
  85 };
  86
  87 static struct bcm63xx_enet_platform_data enet1_pd;
  88
  89 static struct platform_device bcm63xx_enet1_device = {
  90         .name           = "bcm63xx_enet",
  91         .id             = 1,
  92         .num_resources  = ARRAY_SIZE(enet1_res),
  93         .resource       = enet1_res,
  94         .dev            = {
  95                 .platform_data = &enet1_pd,
  96         },
  97 };
  98
  99 int __init bcm63xx_enet_register(int unit,
 100                                  const struct bcm63xx_enet_platform_data *pd)
 101 {
 102         struct platform_device *pdev;
 103         struct bcm63xx_enet_platform_data *dpd;
 104         int ret;
 105
 106         if (unit > 1)
 107                 return -ENODEV;
 108
 109         if (!shared_device_registered) {
 110                 shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA);
 111                 shared_res[0].end = shared_res[0].start;
 112                 shared_res[0].end += RSET_ENETDMA_SIZE - 1;
 113
 114                 ret = platform_device_register(&bcm63xx_enet_shared_device);
 115                 if (ret)
 116                         return ret;
 117                 shared_device_registered = 1;
 118         }
 119
 120         if (unit == 0) {
 121                 enet0_res[0].start = bcm63xx_regset_address(RSET_ENET0);
 122                 enet0_res[0].end = enet0_res[0].start;
 123                 enet0_res[0].end += RSET_ENET_SIZE - 1;
 124                 enet0_res[1].start = bcm63xx_get_irq_number(IRQ_ENET0);
 125                 enet0_res[2].start = bcm63xx_get_irq_number(IRQ_ENET0_RXDMA);
 126                 enet0_res[3].start = bcm63xx_get_irq_number(IRQ_ENET0_TXDMA);
 127                 pdev = &bcm63xx_enet0_device;
 128         } else {
 129                 enet1_res[0].start = bcm63xx_regset_address(RSET_ENET1);
 130                 enet1_res[0].end = enet1_res[0].start;
 131                 enet1_res[0].end += RSET_ENET_SIZE - 1;
 132                 enet1_res[1].start = bcm63xx_get_irq_number(IRQ_ENET1);
 133                 enet1_res[2].start = bcm63xx_get_irq_number(IRQ_ENET1_RXDMA);
 134                 enet1_res[3].start = bcm63xx_get_irq_number(IRQ_ENET1_TXDMA);
 135                 pdev = &bcm63xx_enet1_device;
 136         }
 137
 138         /* copy given platform data */
 139         dpd = pdev->dev.platform_data;
 140         memcpy(dpd, pd, sizeof (*pd));
 141
 142         /* adjust them in case internal phy is used */
 143         if (dpd->use_internal_phy) {
 144
 145                 /* internal phy only exists for enet0 */
 146                 if (unit == 1)
 147                         return -ENODEV;
 148
 149                 dpd->phy_id = 1;
 150                 dpd->has_phy_interrupt = 1;
 151                 dpd->phy_interrupt = bcm63xx_get_irq_number(IRQ_ENET_PHY);
 152         }
 153
 154         ret = platform_device_register(pdev);
 155         if (ret)
 156                 return ret;
 157         return 0;
 158 }