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;
  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                 .flags          = IORESOURCE_IRQ,
  46         },
  47         {
  48                 .start          = -1, /* filled at runtime */
  49                 .flags          = IORESOURCE_IRQ,
  50         },
  51 };
  52
  53 static struct bcm63xx_enet_platform_data enet0_pd;
  54
  55 static struct platform_device bcm63xx_enet0_device = {
  56         .name           = "bcm63xx_enet",
  57         .id             = 0,
  58         .num_resources  = ARRAY_SIZE(enet0_res),
  59         .resource       = enet0_res,
  60         .dev            = {
  61                 .platform_data = &enet0_pd,
  62         },
  63 };
  64
  65 static struct resource enet1_res[] = {
  66         {
  67                 .start          = -1, /* filled at runtime */
  68                 .end            = -1, /* filled at runtime */
  69                 .flags          = IORESOURCE_MEM,
  70         },
  71         {
  72                 .start          = -1, /* filled at runtime */
  73                 .flags          = IORESOURCE_IRQ,
  74         },
  75         {
  76                 .start          = -1, /* filled at runtime */
  77                 .flags          = IORESOURCE_IRQ,
  78         },
  79         {
  80                 .start          = -1, /* filled at runtime */
  81                 .flags          = IORESOURCE_IRQ,
  82         },
  83 };
  84
  85 static struct bcm63xx_enet_platform_data enet1_pd;
  86
  87 static struct platform_device bcm63xx_enet1_device = {
  88         .name           = "bcm63xx_enet",
  89         .id             = 1,
  90         .num_resources  = ARRAY_SIZE(enet1_res),
  91         .resource       = enet1_res,
  92         .dev            = {
  93                 .platform_data = &enet1_pd,
  94         },
  95 };
  96
  97 int __init bcm63xx_enet_register(int unit,
  98                                  const struct bcm63xx_enet_platform_data *pd)
  99 {
 100         struct platform_device *pdev;
 101         struct bcm63xx_enet_platform_data *dpd;
 102         int ret;
 103
 104         if (unit > 1)
 105                 return -ENODEV;
 106
 107         if (!shared_device_registered) {
 108                 shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA);
 109                 shared_res[0].end = shared_res[0].start;
 110                 if (BCMCPU_IS_6338())
 111                         shared_res[0].end += (RSET_ENETDMA_SIZE / 2)  - 1;
 112                 else
 113                         shared_res[0].end += (RSET_ENETDMA_SIZE)  - 1;
 114
 115                 ret = platform_device_register(&bcm63xx_enet_shared_device);
 116                 if (ret)
 117                         return ret;
 118                 shared_device_registered = 1;
 119         }
 120
 121         if (unit == 0) {
 122                 enet0_res[0].start = bcm63xx_regset_address(RSET_ENET0);
 123                 enet0_res[0].end = enet0_res[0].start;
 124                 enet0_res[0].end += RSET_ENET_SIZE - 1;
 125                 enet0_res[1].start = bcm63xx_get_irq_number(IRQ_ENET0);
 126                 enet0_res[2].start = bcm63xx_get_irq_number(IRQ_ENET0_RXDMA);
 127                 enet0_res[3].start = bcm63xx_get_irq_number(IRQ_ENET0_TXDMA);
 128                 pdev = &bcm63xx_enet0_device;
 129         } else {
 130                 enet1_res[0].start = bcm63xx_regset_address(RSET_ENET1);
 131                 enet1_res[0].end = enet1_res[0].start;
 132                 enet1_res[0].end += RSET_ENET_SIZE - 1;
 133                 enet1_res[1].start = bcm63xx_get_irq_number(IRQ_ENET1);
 134                 enet1_res[2].start = bcm63xx_get_irq_number(IRQ_ENET1_RXDMA);
 135                 enet1_res[3].start = bcm63xx_get_irq_number(IRQ_ENET1_TXDMA);
 136                 pdev = &bcm63xx_enet1_device;
 137         }
 138
 139         /* copy given platform data */
 140         dpd = pdev->dev.platform_data;
 141         memcpy(dpd, pd, sizeof(*pd));
 142
 143         /* adjust them in case internal phy is used */
 144         if (dpd->use_internal_phy) {
 145
 146                 /* internal phy only exists for enet0 */
 147                 if (unit == 1)
 148                         return -ENODEV;
 149
 150                 dpd->phy_id = 1;
 151                 dpd->has_phy_interrupt = 1;
 152                 dpd->phy_interrupt = bcm63xx_get_irq_number(IRQ_ENET_PHY);
 153         }
 154
 155         ret = platform_device_register(pdev);
 156         if (ret)
 157                 return ret;
 158         return 0;
 159 }