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 */ 52static 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 75static 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 99static 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 122static u64 iop3xx_adma_dmamask = DMA_BIT_MASK(32); 123 124static struct iop_adma_platform_data iop3xx_dma_0_data = { 125 .hw_id = DMA0_ID, 126 .pool_size = PAGE_SIZE, 127}; 128 129static struct iop_adma_platform_data iop3xx_dma_1_data = { 130 .hw_id = DMA1_ID, 131 .pool_size = PAGE_SIZE, 132}; 133 134static struct iop_adma_platform_data iop3xx_aau_data = { 135 .hw_id = AAU_ID, 136 .pool_size = 3 * PAGE_SIZE, 137}; 138 139struct 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_BIT_MASK(64), 147 .platform_data = (void *) &iop3xx_dma_0_data, 148 }, 149}; 150 151struct 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_BIT_MASK(64), 159 .platform_data = (void *) &iop3xx_dma_1_data, 160 }, 161}; 162 163struct 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_BIT_MASK(64), 171 .platform_data = (void *) &iop3xx_aau_data, 172 }, 173}; 174 175static 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_INTERRUPT, iop3xx_dma_0_data.cap_mask); 183 #endif 184 185 #ifdef CONFIG_ARCH_IOP32X /* the 32x DMA does not perform CRC32C */ 186 dma_cap_set(DMA_MEMCPY, iop3xx_dma_1_data.cap_mask); 187 dma_cap_set(DMA_INTERRUPT, iop3xx_dma_1_data.cap_mask); 188 #else 189 dma_cap_set(DMA_MEMCPY, iop3xx_dma_1_data.cap_mask); 190 dma_cap_set(DMA_INTERRUPT, iop3xx_dma_1_data.cap_mask); 191 #endif 192 193 #ifdef CONFIG_ARCH_IOP32X /* the 32x AAU does not perform zero sum */ 194 dma_cap_set(DMA_XOR, iop3xx_aau_data.cap_mask); 195 dma_cap_set(DMA_INTERRUPT, iop3xx_aau_data.cap_mask); 196 #else 197 dma_cap_set(DMA_XOR, iop3xx_aau_data.cap_mask); 198 dma_cap_set(DMA_XOR_VAL, iop3xx_aau_data.cap_mask); 199 dma_cap_set(DMA_INTERRUPT, iop3xx_aau_data.cap_mask); 200 #endif 201 202 return 0; 203} 204 205arch_initcall(iop3xx_adma_cap_init); 206