release/src-rt-6.x/linux/linux-2.6/arch/arm/mach-iop13xx/tpmi.c

   1 /*
   2  * iop13xx tpmi device resources
   3  * Copyright (c) 2005-2006, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  16  * Place - Suite 330, Boston, MA 02111-1307 USA.
  17  *
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/dma-mapping.h>
  24 #include <asm/io.h>
  25 #include <asm/irq.h>
  26 #include <asm/sizes.h>
  27
  28 /* assumes CONTROLLER_ONLY# is never asserted in the ESSR register */
  29 #define IOP13XX_TPMI_MMR(dev)   IOP13XX_REG_ADDR32_PHYS(0x48000 + (dev << 12))
  30 #define IOP13XX_TPMI_MEM(dev)   IOP13XX_REG_ADDR32_PHYS(0x60000 + (dev << 13))
  31 #define IOP13XX_TPMI_CTRL(dev)  IOP13XX_REG_ADDR32_PHYS(0x50000 + (dev << 10))
  32 #define IOP13XX_TPMI_MMR_SIZE       (SZ_4K - 1)
  33 #define IOP13XX_TPMI_MEM_SIZE       (255)
  34 #define IOP13XX_TPMI_MEM_CTRL       (SZ_1K - 1)
  35 #define IOP13XX_TPMI_RESOURCE_MMR  0
  36 #define IOP13XX_TPMI_RESOURCE_MEM  1
  37 #define IOP13XX_TPMI_RESOURCE_CTRL 2
  38 #define IOP13XX_TPMI_RESOURCE_IRQ  3
  39
  40 static struct resource iop13xx_tpmi_0_resources[] = {
  41         [IOP13XX_TPMI_RESOURCE_MMR] = {
  42                 .start = IOP13XX_TPMI_MMR(4), /* tpmi0 starts at dev == 4 */
  43                 .end = IOP13XX_TPMI_MMR(4) + IOP13XX_TPMI_MMR_SIZE,
  44                 .flags = IORESOURCE_MEM,
  45         },
  46         [IOP13XX_TPMI_RESOURCE_MEM] = {
  47                 .start = IOP13XX_TPMI_MEM(0),
  48                 .end = IOP13XX_TPMI_MEM(0) + IOP13XX_TPMI_MEM_SIZE,
  49                 .flags = IORESOURCE_MEM,
  50         },
  51         [IOP13XX_TPMI_RESOURCE_CTRL] = {
  52                 .start = IOP13XX_TPMI_CTRL(0),
  53                 .end = IOP13XX_TPMI_CTRL(0) + IOP13XX_TPMI_MEM_CTRL,
  54                 .flags = IORESOURCE_MEM,
  55         },
  56         [IOP13XX_TPMI_RESOURCE_IRQ] = {
  57                 .start = IRQ_IOP13XX_TPMI0_OUT,
  58                 .end = IRQ_IOP13XX_TPMI0_OUT,
  59                 .flags = IORESOURCE_IRQ
  60         }
  61 };
  62
  63 static struct resource iop13xx_tpmi_1_resources[] = {
  64         [IOP13XX_TPMI_RESOURCE_MMR] = {
  65                 .start = IOP13XX_TPMI_MMR(1),
  66                 .end = IOP13XX_TPMI_MMR(1) + IOP13XX_TPMI_MMR_SIZE,
  67                 .flags = IORESOURCE_MEM,
  68         },
  69         [IOP13XX_TPMI_RESOURCE_MEM] = {
  70                 .start = IOP13XX_TPMI_MEM(1),
  71                 .end = IOP13XX_TPMI_MEM(1) + IOP13XX_TPMI_MEM_SIZE,
  72                 .flags = IORESOURCE_MEM,
  73         },
  74         [IOP13XX_TPMI_RESOURCE_CTRL] = {
  75                 .start = IOP13XX_TPMI_CTRL(1),
  76                 .end = IOP13XX_TPMI_CTRL(1) + IOP13XX_TPMI_MEM_CTRL,
  77                 .flags = IORESOURCE_MEM,
  78         },
  79         [IOP13XX_TPMI_RESOURCE_IRQ] = {
  80                 .start = IRQ_IOP13XX_TPMI1_OUT,
  81                 .end = IRQ_IOP13XX_TPMI1_OUT,
  82                 .flags = IORESOURCE_IRQ
  83         }
  84 };
  85
  86 static struct resource iop13xx_tpmi_2_resources[] = {
  87         [IOP13XX_TPMI_RESOURCE_MMR] = {
  88                 .start = IOP13XX_TPMI_MMR(2),
  89                 .end = IOP13XX_TPMI_MMR(2) + IOP13XX_TPMI_MMR_SIZE,
  90                 .flags = IORESOURCE_MEM,
  91         },
  92         [IOP13XX_TPMI_RESOURCE_MEM] = {
  93                 .start = IOP13XX_TPMI_MEM(2),
  94                 .end = IOP13XX_TPMI_MEM(2) + IOP13XX_TPMI_MEM_SIZE,
  95                 .flags = IORESOURCE_MEM,
  96         },
  97         [IOP13XX_TPMI_RESOURCE_CTRL] = {
  98                 .start = IOP13XX_TPMI_CTRL(2),
  99                 .end = IOP13XX_TPMI_CTRL(2) + IOP13XX_TPMI_MEM_CTRL,
 100                 .flags = IORESOURCE_MEM,
 101         },
 102         [IOP13XX_TPMI_RESOURCE_IRQ] = {
 103                 .start = IRQ_IOP13XX_TPMI2_OUT,
 104                 .end = IRQ_IOP13XX_TPMI2_OUT,
 105                 .flags = IORESOURCE_IRQ
 106         }
 107 };
 108
 109 static struct resource iop13xx_tpmi_3_resources[] = {
 110         [IOP13XX_TPMI_RESOURCE_MMR] = {
 111                 .start = IOP13XX_TPMI_MMR(3),
 112                 .end = IOP13XX_TPMI_MMR(3) + IOP13XX_TPMI_MMR_SIZE,
 113                 .flags = IORESOURCE_MEM,
 114         },
 115         [IOP13XX_TPMI_RESOURCE_MEM] = {
 116                 .start = IOP13XX_TPMI_MEM(3),
 117                 .end = IOP13XX_TPMI_MEM(3) + IOP13XX_TPMI_MEM_SIZE,
 118                 .flags = IORESOURCE_MEM,
 119         },
 120         [IOP13XX_TPMI_RESOURCE_CTRL] = {
 121                 .start = IOP13XX_TPMI_CTRL(3),
 122                 .end = IOP13XX_TPMI_CTRL(3) + IOP13XX_TPMI_MEM_CTRL,
 123                 .flags = IORESOURCE_MEM,
 124         },
 125         [IOP13XX_TPMI_RESOURCE_IRQ] = {
 126                 .start = IRQ_IOP13XX_TPMI3_OUT,
 127                 .end = IRQ_IOP13XX_TPMI3_OUT,
 128                 .flags = IORESOURCE_IRQ
 129         }
 130 };
 131
 132 u64 iop13xx_tpmi_mask = DMA_64BIT_MASK;
 133 static struct platform_device iop13xx_tpmi_0_device = {
 134         .name = "iop-tpmi",
 135         .id = 0,
 136         .num_resources = 4,
 137         .resource = iop13xx_tpmi_0_resources,
 138         .dev = {
 139                 .dma_mask          = &iop13xx_tpmi_mask,
 140                 .coherent_dma_mask = DMA_64BIT_MASK,
 141         },
 142 };
 143
 144 static struct platform_device iop13xx_tpmi_1_device = {
 145         .name = "iop-tpmi",
 146         .id = 1,
 147         .num_resources = 4,
 148         .resource = iop13xx_tpmi_1_resources,
 149         .dev = {
 150                 .dma_mask          = &iop13xx_tpmi_mask,
 151                 .coherent_dma_mask = DMA_64BIT_MASK,
 152         },
 153 };
 154
 155 static struct platform_device iop13xx_tpmi_2_device = {
 156         .name = "iop-tpmi",
 157         .id = 2,
 158         .num_resources = 4,
 159         .resource = iop13xx_tpmi_2_resources,
 160         .dev = {
 161                 .dma_mask          = &iop13xx_tpmi_mask,
 162                 .coherent_dma_mask = DMA_64BIT_MASK,
 163         },
 164 };
 165
 166 static struct platform_device iop13xx_tpmi_3_device = {
 167         .name = "iop-tpmi",
 168         .id = 3,
 169         .num_resources = 4,
 170         .resource = iop13xx_tpmi_3_resources,
 171         .dev = {
 172                 .dma_mask          = &iop13xx_tpmi_mask,
 173                 .coherent_dma_mask = DMA_64BIT_MASK,
 174         },
 175 };
 176
 177 __init void iop13xx_add_tpmi_devices(void)
 178 {
 179         unsigned short device_id;
 180
 181         /* tpmi's not present on iop341 or iop342 */
 182         if (__raw_readl(IOP13XX_ESSR0) & IOP13XX_INTERFACE_SEL_PCIX)
 183                 /* ATUE must be present */
 184                 device_id = __raw_readw(IOP13XX_ATUE_DID);
 185         else
 186                 /* ATUX must be present */
 187                 device_id = __raw_readw(IOP13XX_ATUX_DID);
 188
 189         switch (device_id) {
 190         /* iop34[1|2] 0-tpmi */
 191         case 0x3380:
 192         case 0x3384:
 193         case 0x3388:
 194         case 0x338c:
 195         case 0x3382:
 196         case 0x3386:
 197         case 0x338a:
 198         case 0x338e:
 199                 return;
 200         /* iop348 1-tpmi */
 201         case 0x3310:
 202         case 0x3312:
 203         case 0x3314:
 204         case 0x3318:
 205         case 0x331a:
 206         case 0x331c:
 207         case 0x33c0:
 208         case 0x33c2:
 209         case 0x33c4:
 210         case 0x33c8:
 211         case 0x33ca:
 212         case 0x33cc:
 213         case 0x33b0:
 214         case 0x33b2:
 215         case 0x33b4:
 216         case 0x33b8:
 217         case 0x33ba:
 218         case 0x33bc:
 219         case 0x3320:
 220         case 0x3322:
 221         case 0x3324:
 222         case 0x3328:
 223         case 0x332a:
 224         case 0x332c:
 225                 platform_device_register(&iop13xx_tpmi_0_device);
 226                 return;
 227         default:
 228                 platform_device_register(&iop13xx_tpmi_0_device);
 229                 platform_device_register(&iop13xx_tpmi_1_device);
 230                 platform_device_register(&iop13xx_tpmi_2_device);
 231                 platform_device_register(&iop13xx_tpmi_3_device);
 232                 return;
 233         }
 234 }