arch/arm/plat-iop/adma.c

   1 /*
   2  * platform device definitions for the iop3xx dma/xor engines
   3  * Copyright © 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.,
  16  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  */
  19 #include <linux/platform_device.h>
  20 #include <asm/hardware/iop3xx.h>
  21 #include <linux/dma-mapping.h>
  22 #include <mach/adma.h>
  23 #include <asm/hardware/iop_adma.h>
  24
  25 #ifdef CONFIG_ARCH_IOP32X
  26 #define IRQ_DMA0_EOT IRQ_IOP32X_DMA0_EOT
  27 #define IRQ_DMA0_EOC IRQ_IOP32X_DMA0_EOC
  28 #define IRQ_DMA0_ERR IRQ_IOP32X_DMA0_ERR
  29
  30 #define IRQ_DMA1_EOT IRQ_IOP32X_DMA1_EOT
  31 #define IRQ_DMA1_EOC IRQ_IOP32X_DMA1_EOC
  32 #define IRQ_DMA1_ERR IRQ_IOP32X_DMA1_ERR
  33
  34 #define IRQ_AA_EOT IRQ_IOP32X_AA_EOT
  35 #define IRQ_AA_EOC IRQ_IOP32X_AA_EOC
  36 #define IRQ_AA_ERR IRQ_IOP32X_AA_ERR
  37 #endif
  38 #ifdef CONFIG_ARCH_IOP33X
  39 #define IRQ_DMA0_EOT IRQ_IOP33X_DMA0_EOT
  40 #define IRQ_DMA0_EOC IRQ_IOP33X_DMA0_EOC
  41 #define IRQ_DMA0_ERR IRQ_IOP33X_DMA0_ERR
  42
  43 #define IRQ_DMA1_EOT IRQ_IOP33X_DMA1_EOT
  44 #define IRQ_DMA1_EOC IRQ_IOP33X_DMA1_EOC
  45 #define IRQ_DMA1_ERR IRQ_IOP33X_DMA1_ERR
  46
  47 #define IRQ_AA_EOT IRQ_IOP33X_AA_EOT
  48 #define IRQ_AA_EOC IRQ_IOP33X_AA_EOC
  49 #define IRQ_AA_ERR IRQ_IOP33X_AA_ERR
  50 #endif
  51 /* AAU and DMA Channels */
  52 static struct resource iop3xx_dma_0_resources[] = {
  53         [0] = {
  54                 .start = IOP3XX_DMA_PHYS_BASE(0),
  55                 .end = IOP3XX_DMA_UPPER_PA(0),
  56                 .flags = IORESOURCE_MEM,
  57         },
  58         [1] = {
  59                 .start = IRQ_DMA0_EOT,
  60                 .end = IRQ_DMA0_EOT,
  61                 .flags = IORESOURCE_IRQ
  62         },
  63         [2] = {
  64                 .start = IRQ_DMA0_EOC,
  65                 .end = IRQ_DMA0_EOC,
  66                 .flags = IORESOURCE_IRQ
  67         },
  68         [3] = {
  69                 .start = IRQ_DMA0_ERR,
  70                 .end = IRQ_DMA0_ERR,
  71                 .flags = IORESOURCE_IRQ
  72         }
  73 };
  74
  75 static struct resource iop3xx_dma_1_resources[] = {
  76         [0] = {
  77                 .start = IOP3XX_DMA_PHYS_BASE(1),
  78                 .end = IOP3XX_DMA_UPPER_PA(1),
  79                 .flags = IORESOURCE_MEM,
  80         },
  81         [1] = {
  82                 .start = IRQ_DMA1_EOT,
  83                 .end = IRQ_DMA1_EOT,
  84                 .flags = IORESOURCE_IRQ
  85         },
  86         [2] = {
  87                 .start = IRQ_DMA1_EOC,
  88                 .end = IRQ_DMA1_EOC,
  89                 .flags = IORESOURCE_IRQ
  90         },
  91         [3] = {
  92                 .start = IRQ_DMA1_ERR,
  93                 .end = IRQ_DMA1_ERR,
  94                 .flags = IORESOURCE_IRQ
  95         }
  96 };
  97
  98
  99 static struct resource iop3xx_aau_resources[] = {
 100         [0] = {
 101                 .start = IOP3XX_AAU_PHYS_BASE,
 102                 .end = IOP3XX_AAU_UPPER_PA,
 103                 .flags = IORESOURCE_MEM,
 104         },
 105         [1] = {
 106                 .start = IRQ_AA_EOT,
 107                 .end = IRQ_AA_EOT,
 108                 .flags = IORESOURCE_IRQ
 109         },
 110         [2] = {
 111                 .start = IRQ_AA_EOC,
 112                 .end = IRQ_AA_EOC,
 113                 .flags = IORESOURCE_IRQ
 114         },
 115         [3] = {
 116                 .start = IRQ_AA_ERR,
 117                 .end = IRQ_AA_ERR,
 118                 .flags = IORESOURCE_IRQ
 119         }
 120 };
 121
 122 static u64 iop3xx_adma_dmamask = DMA_32BIT_MASK;
 123
 124 static struct iop_adma_platform_data iop3xx_dma_0_data = {
 125         .hw_id = DMA0_ID,
 126         .pool_size = PAGE_SIZE,
 127 };
 128
 129 static struct iop_adma_platform_data iop3xx_dma_1_data = {
 130         .hw_id = DMA1_ID,
 131         .pool_size = PAGE_SIZE,
 132 };
 133
 134 static struct iop_adma_platform_data iop3xx_aau_data = {
 135         .hw_id = AAU_ID,
 136         .pool_size = 3 * PAGE_SIZE,
 137 };
 138
 139 struct platform_device iop3xx_dma_0_channel = {
 140         .name = "iop-adma",
 141         .id = 0,
 142         .num_resources = 4,
 143         .resource = iop3xx_dma_0_resources,
 144         .dev = {
 145                 .dma_mask = &iop3xx_adma_dmamask,
 146                 .coherent_dma_mask = DMA_64BIT_MASK,
 147                 .platform_data = (void *) &iop3xx_dma_0_data,
 148         },
 149 };
 150
 151 struct platform_device iop3xx_dma_1_channel = {
 152         .name = "iop-adma",
 153         .id = 1,
 154         .num_resources = 4,
 155         .resource = iop3xx_dma_1_resources,
 156         .dev = {
 157                 .dma_mask = &iop3xx_adma_dmamask,
 158                 .coherent_dma_mask = DMA_64BIT_MASK,
 159                 .platform_data = (void *) &iop3xx_dma_1_data,
 160         },
 161 };
 162
 163 struct platform_device iop3xx_aau_channel = {
 164         .name = "iop-adma",
 165         .id = 2,
 166         .num_resources = 4,
 167         .resource = iop3xx_aau_resources,
 168         .dev = {
 169                 .dma_mask = &iop3xx_adma_dmamask,
 170                 .coherent_dma_mask = DMA_64BIT_MASK,
 171                 .platform_data = (void *) &iop3xx_aau_data,
 172         },
 173 };
 174
 175 static int __init iop3xx_adma_cap_init(void)
 176 {
 177         #ifdef CONFIG_ARCH_IOP32X /* the 32x DMA does not perform CRC32C */
 178         dma_cap_set(DMA_MEMCPY, iop3xx_dma_0_data.cap_mask);
 179         dma_cap_set(DMA_INTERRUPT, iop3xx_dma_0_data.cap_mask);
 180         #else
 181         dma_cap_set(DMA_MEMCPY, iop3xx_dma_0_data.cap_mask);
 182         dma_cap_set(DMA_MEMCPY_CRC32C, iop3xx_dma_0_data.cap_mask);
 183         dma_cap_set(DMA_INTERRUPT, iop3xx_dma_0_data.cap_mask);
 184         #endif
 185
 186         #ifdef CONFIG_ARCH_IOP32X /* the 32x DMA does not perform CRC32C */
 187         dma_cap_set(DMA_MEMCPY, iop3xx_dma_1_data.cap_mask);
 188         dma_cap_set(DMA_INTERRUPT, iop3xx_dma_1_data.cap_mask);
 189         #else
 190         dma_cap_set(DMA_MEMCPY, iop3xx_dma_1_data.cap_mask);
 191         dma_cap_set(DMA_MEMCPY_CRC32C, iop3xx_dma_1_data.cap_mask);
 192         dma_cap_set(DMA_INTERRUPT, iop3xx_dma_1_data.cap_mask);
 193         #endif
 194
 195         #ifdef CONFIG_ARCH_IOP32X /* the 32x AAU does not perform zero sum */
 196         dma_cap_set(DMA_XOR, iop3xx_aau_data.cap_mask);
 197         dma_cap_set(DMA_MEMSET, iop3xx_aau_data.cap_mask);
 198         dma_cap_set(DMA_INTERRUPT, iop3xx_aau_data.cap_mask);
 199         #else
 200         dma_cap_set(DMA_XOR, iop3xx_aau_data.cap_mask);
 201         dma_cap_set(DMA_ZERO_SUM, iop3xx_aau_data.cap_mask);
 202         dma_cap_set(DMA_MEMSET, iop3xx_aau_data.cap_mask);
 203         dma_cap_set(DMA_INTERRUPT, iop3xx_aau_data.cap_mask);
 204         #endif
 205
 206         return 0;
 207 }
 208
 209 arch_initcall(iop3xx_adma_cap_init);