target/linux/rb532-2.6/files/arch/mips/rb500/devices.c

   1 /*
   2  *  RouterBoard 500 Platform devices
   3  *
   4  *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  $Id$
  17  */
  18 #include <linux/kernel.h>
  19 #include <linux/init.h>
  20 #include <linux/module.h>
  21 #include <linux/ctype.h>
  22 #include <linux/string.h>
  23 #include <linux/platform_device.h>
  24 #include <asm/unaligned.h>
  25 #include <asm/io.h>
  26
  27 #include <asm/rc32434/rc32434.h>
  28 #include <asm/rc32434/dma.h>
  29 #include <asm/rc32434/dma_v.h>
  30 #include <asm/rc32434/eth.h>
  31 #include <asm/rc32434/rb.h>
  32
  33 #define ETH0_DMA_RX_IRQ         GROUP1_IRQ_BASE + 0
  34 #define ETH0_DMA_TX_IRQ         GROUP1_IRQ_BASE + 1
  35 #define ETH0_RX_OVR_IRQ         GROUP3_IRQ_BASE + 9
  36 #define ETH0_TX_UND_IRQ         GROUP3_IRQ_BASE + 10
  37
  38 #define ETH0_RX_DMA_ADDR  (DMA0_PhysicalAddress + 0*DMA_CHAN_OFFSET)
  39 #define ETH0_TX_DMA_ADDR  (DMA0_PhysicalAddress + 1*DMA_CHAN_OFFSET)
  40
  41 static struct resource korina_dev0_res[] = {
  42         {
  43                 .name  = "korina_regs",
  44                 .start = ETH0_PhysicalAddress,
  45                 .end   = ETH0_PhysicalAddress + sizeof(ETH_t),
  46                 .flags = IORESOURCE_MEM,
  47         },
  48         {
  49                 .name  = "korina_rx",
  50                 .start = ETH0_DMA_RX_IRQ,
  51                 .end   = ETH0_DMA_RX_IRQ,
  52                 .flags = IORESOURCE_IRQ
  53         },
  54         {
  55                 .name  = "korina_tx",
  56                 .start = ETH0_DMA_TX_IRQ,
  57                 .end   = ETH0_DMA_TX_IRQ,
  58                 .flags = IORESOURCE_IRQ
  59         },
  60         {
  61                 .name  = "korina_ovr",
  62                 .start = ETH0_RX_OVR_IRQ,
  63                 .end   = ETH0_RX_OVR_IRQ,
  64                 .flags = IORESOURCE_IRQ
  65         },
  66         {
  67                 .name  = "korina_und",
  68                 .start = ETH0_TX_UND_IRQ,
  69                 .end   = ETH0_TX_UND_IRQ,
  70                 .flags = IORESOURCE_IRQ
  71         },
  72         {
  73                 .name  = "korina_dma_rx",
  74                 .start = ETH0_RX_DMA_ADDR,
  75                 .end   = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
  76                 .flags = IORESOURCE_MEM,
  77         },
  78         {
  79                 .name  = "korina_dma_tx",
  80                 .start = ETH0_TX_DMA_ADDR,
  81                 .end   = ETH0_TX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
  82                 .flags = IORESOURCE_MEM,
  83         }
  84 };
  85
  86 static struct korina_device korina_dev0_data = {
  87         .name = "korina0",
  88         .mac = { 0xde, 0xca, 0xff, 0xc0, 0xff, 0xee }
  89 };
  90
  91 static struct platform_device korina_dev0 = {
  92         .id = 0,
  93         .name = "korina",
  94         .dev.platform_data = &korina_dev0_data,
  95         .resource = korina_dev0_res,
  96         .num_resources = ARRAY_SIZE(korina_dev0_res),
  97 };
  98
  99
 100 #define CF_GPIO_NUM 13
 101
 102 static struct resource cf_slot0_res[] = {
 103         {
 104                 .name  = "cf_membase",
 105                 .flags = IORESOURCE_MEM
 106         },
 107         {
 108                 .name  = "cf_irq",
 109                 .start = (8 + 4 * 32 + CF_GPIO_NUM),  /* 149 */
 110                 .end   = (8 + 4 * 32 + CF_GPIO_NUM),
 111                 .flags = IORESOURCE_IRQ
 112         }
 113 };
 114
 115 static struct cf_device cf_slot0_data = {
 116         .gpio_pin = 13
 117 };
 118
 119 static struct platform_device cf_slot0 = {
 120         .id = 0,
 121         .name = "rb500-cf",
 122         .dev.platform_data = &cf_slot0_data,
 123         .resource = cf_slot0_res,
 124         .num_resources = ARRAY_SIZE(cf_slot0_res),
 125 };
 126
 127 /* Resources and device for NAND.  There is no data needed and no irqs, so just define the memory used. */
 128 static struct resource nand_slot0_res[] = {
 129         {
 130                 .name = "nand_membase",
 131                 .start = 0x18a20000,
 132                 .end = (0x18a20000+0x1000)-1,
 133                 .flags = IORESOURCE_MEM
 134         }
 135 };
 136
 137 static struct platform_device nand_slot0 = {
 138         .id = 0,
 139         .name = "rb500-nand",
 140         .resource = nand_slot0_res,
 141         .num_resources = ARRAY_SIZE(nand_slot0_res),
 142 };
 143
 144 static struct platform_device rb500led = {
 145         .name = "rb500-led",
 146         .id = 0,
 147 };
 148
 149
 150 static struct platform_device *rb500_devs[] = {
 151         &korina_dev0,
 152         &nand_slot0,
 153         &cf_slot0,
 154         &rb500led
 155 };
 156
 157 static void __init parse_mac_addr(char* macstr)
 158 {
 159         int i, j;
 160         unsigned char result, value;
 161
 162         for (i=0; i<6; i++) {
 163                 result = 0;
 164                 if (i != 5 && *(macstr+2) != ':') {
 165                         return;
 166                 }
 167                 for (j=0; j<2; j++) {
 168                         if (isxdigit(*macstr) && (value = isdigit(*macstr) ? *macstr-'0' :
 169                                                   toupper(*macstr)-'A'+10) < 16) {
 170                                 result = result*16 + value;
 171                                 macstr++;
 172                         }
 173                         else return;
 174                 }
 175
 176                 macstr++;
 177                 korina_dev0_data.mac[i] = result;
 178         }
 179 }
 180
 181
 182 /* DEVICE CONTROLLER 1 */
 183 #define CFG_DC_DEV1 (void*)0xb8010010
 184 #define CFG_DC_DEV2 (void*)0xb8010020
 185 #define CFG_DC_DEVBASE    0x0
 186 #define CFG_DC_DEVMASK    0x4
 187 #define CFG_DC_DEVC       0x8
 188 #define CFG_DC_DEVTC      0xC
 189
 190
 191 static int __init plat_setup_devices(void)
 192 {
 193         /* Look for the CF card reader */
 194         if (!readl(CFG_DC_DEV1 + CFG_DC_DEVMASK))
 195                 rb500_devs[1] = NULL;
 196         else {
 197                 cf_slot0_res[0].start = readl(CFG_DC_DEV1 + CFG_DC_DEVBASE);
 198                 cf_slot0_res[0].end = cf_slot0_res[0].start + 0x1000;
 199         }
 200
 201         /* There is always a NAND device */
 202         nand_slot0_res[0].start = readl( CFG_DC_DEV2 + CFG_DC_DEVBASE);
 203         nand_slot0_res[0].end = nand_slot0_res[0].start + 0x1000;
 204
 205         return platform_add_devices(rb500_devs, ARRAY_SIZE(rb500_devs));
 206 }
 207
 208 static int __init setup_kmac(char *s)
 209 {
 210     printk("korina mac = %s\n",s);
 211         parse_mac_addr(s);
 212     return 0;
 213 }
 214
 215 __setup("kmac=", setup_kmac);
 216 arch_initcall(plat_setup_devices);
 217
 218