| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************/ |
| 2 | |
| 3 | /* |
| 4 | * mcfdma.h -- Coldfire internal DMA support defines. |
| 5 | * |
| 6 | * (C) Copyright 1999, Rob Scott (rscott@mtrob.ml.org) |
| 7 | */ |
| 8 | |
| 9 | /****************************************************************************/ |
| 10 | #ifndef mcfdma_h |
| 11 | #define mcfdma_h |
| 12 | /****************************************************************************/ |
| 13 | |
| 14 | #include <linux/config.h> |
| 15 | |
| 16 | /* |
| 17 | * Get address specific defines for this Coldfire member. |
| 18 | */ |
| 19 | #if defined(CONFIG_M5206) || defined(CONFIG_M5206e) |
| 20 | #define MCFDMA_BASE0 0x200 /* Base address of DMA 0 */ |
| 21 | #define MCFDMA_BASE1 0x240 /* Base address of DMA 1 */ |
| 22 | #elif defined(CONFIG_M5272) |
| 23 | #define MCFDMA_BASE0 0x0e0 /* Base address of DMA 0 */ |
| 24 | #elif defined(CONFIG_M527x) || defined(CONFIG_M528x) |
| 25 | /* These are relative to the IPSBAR, not MBAR */ |
| 26 | #define MCFDMA_BASE0 0x100 /* Base address of DMA 0 */ |
| 27 | #define MCFDMA_BASE1 0x140 /* Base address of DMA 1 */ |
| 28 | #define MCFDMA_BASE2 0x180 /* Base address of DMA 2 */ |
| 29 | #define MCFDMA_BASE3 0x1C0 /* Base address of DMA 3 */ |
| 30 | #elif defined(CONFIG_M5249) || defined(CONFIG_M5307) || defined(CONFIG_M5407) |
| 31 | #define MCFDMA_BASE0 0x300 /* Base address of DMA 0 */ |
| 32 | #define MCFDMA_BASE1 0x340 /* Base address of DMA 1 */ |
| 33 | #define MCFDMA_BASE2 0x380 /* Base address of DMA 2 */ |
| 34 | #define MCFDMA_BASE3 0x3C0 /* Base address of DMA 3 */ |
| 35 | #endif |
| 36 | |
| 37 | |
| 38 | #if !defined(CONFIG_M5272) |
| 39 | |
| 40 | /* |
| 41 | * Define the DMA register set addresses. |
| 42 | * Note: these are longword registers, use unsigned long as data type |
| 43 | */ |
| 44 | #define MCFDMA_SAR 0x00 /* DMA source address (r/w) */ |
| 45 | #define MCFDMA_DAR 0x01 /* DMA destination adr (r/w) */ |
| 46 | /* these are word registers, use unsigned short data type */ |
| 47 | #define MCFDMA_DCR 0x04 /* DMA control reg (r/w) */ |
| 48 | #define MCFDMA_BCR 0x06 /* DMA byte count reg (r/w) */ |
| 49 | /* these are byte registers, use unsiged char data type */ |
| 50 | #define MCFDMA_DSR 0x10 /* DMA status reg (r/w) */ |
| 51 | #define MCFDMA_DIVR 0x14 /* DMA interrupt vec (r/w) */ |
| 52 | |
| 53 | /* |
| 54 | * Bit definitions for the DMA Control Register (DCR). |
| 55 | */ |
| 56 | #define MCFDMA_DCR_INT 0x8000 /* Enable completion irq */ |
| 57 | #define MCFDMA_DCR_EEXT 0x4000 /* Enable external DMA req */ |
| 58 | #define MCFDMA_DCR_CS 0x2000 /* Enable cycle steal */ |
| 59 | #define MCFDMA_DCR_AA 0x1000 /* Enable auto alignment */ |
| 60 | #define MCFDMA_DCR_BWC_MASK 0x0E00 /* Bandwidth ctl mask */ |
| 61 | #define MCFDMA_DCR_BWC_512 0x0200 /* Bandwidth: 512 Bytes */ |
| 62 | #define MCFDMA_DCR_BWC_1024 0x0400 /* Bandwidth: 1024 Bytes */ |
| 63 | #define MCFDMA_DCR_BWC_2048 0x0600 /* Bandwidth: 2048 Bytes */ |
| 64 | #define MCFDMA_DCR_BWC_4096 0x0800 /* Bandwidth: 4096 Bytes */ |
| 65 | #define MCFDMA_DCR_BWC_8192 0x0a00 /* Bandwidth: 8192 Bytes */ |
| 66 | #define MCFDMA_DCR_BWC_16384 0x0c00 /* Bandwidth: 16384 Bytes */ |
| 67 | #define MCFDMA_DCR_BWC_32768 0x0e00 /* Bandwidth: 32768 Bytes */ |
| 68 | #define MCFDMA_DCR_SAA 0x0100 /* Single Address Access */ |
| 69 | #define MCFDMA_DCR_S_RW 0x0080 /* SAA read/write value */ |
| 70 | #define MCFDMA_DCR_SINC 0x0040 /* Source addr inc enable */ |
| 71 | #define MCFDMA_DCR_SSIZE_MASK 0x0030 /* Src xfer size */ |
| 72 | #define MCFDMA_DCR_SSIZE_LONG 0x0000 /* Src xfer size, 00 = longw */ |
| 73 | #define MCFDMA_DCR_SSIZE_BYTE 0x0010 /* Src xfer size, 01 = byte */ |
| 74 | #define MCFDMA_DCR_SSIZE_WORD 0x0020 /* Src xfer size, 10 = word */ |
| 75 | #define MCFDMA_DCR_SSIZE_LINE 0x0030 /* Src xfer size, 11 = line */ |
| 76 | #define MCFDMA_DCR_DINC 0x0008 /* Dest addr inc enable */ |
| 77 | #define MCFDMA_DCR_DSIZE_MASK 0x0006 /* Dest xfer size */ |
| 78 | #define MCFDMA_DCR_DSIZE_LONG 0x0000 /* Dest xfer size, 00 = long */ |
| 79 | #define MCFDMA_DCR_DSIZE_BYTE 0x0002 /* Dest xfer size, 01 = byte */ |
| 80 | #define MCFDMA_DCR_DSIZE_WORD 0x0004 /* Dest xfer size, 10 = word */ |
| 81 | #define MCFDMA_DCR_DSIZE_LINE 0x0006 /* Dest xfer size, 11 = line */ |
| 82 | #define MCFDMA_DCR_START 0x0001 /* Start transfer */ |
| 83 | |
| 84 | /* |
| 85 | * Bit definitions for the DMA Status Register (DSR). |
| 86 | */ |
| 87 | #define MCFDMA_DSR_CE 0x40 /* Config error */ |
| 88 | #define MCFDMA_DSR_BES 0x20 /* Bus Error on source */ |
| 89 | #define MCFDMA_DSR_BED 0x10 /* Bus Error on dest */ |
| 90 | #define MCFDMA_DSR_REQ 0x04 /* Requests remaining */ |
| 91 | #define MCFDMA_DSR_BSY 0x02 /* Busy */ |
| 92 | #define MCFDMA_DSR_DONE 0x01 /* DMA transfer complete */ |
| 93 | |
| 94 | #else /* This is an MCF5272 */ |
| 95 | |
| 96 | #define MCFDMA_DMR 0x00 /* Mode Register (r/w) */ |
| 97 | #define MCFDMA_DIR 0x03 /* Interrupt trigger register (r/w) */ |
| 98 | #define MCFDMA_DSAR 0x03 /* Source Address register (r/w) */ |
| 99 | #define MCFDMA_DDAR 0x04 /* Destination Address register (r/w) */ |
| 100 | #define MCFDMA_DBCR 0x02 /* Byte Count Register (r/w) */ |
| 101 | |
| 102 | /* Bit definitions for the DMA Mode Register (DMR) */ |
| 103 | #define MCFDMA_DMR_RESET 0x80000000L /* Reset bit */ |
| 104 | #define MCFDMA_DMR_EN 0x40000000L /* DMA enable */ |
| 105 | #define MCFDMA_DMR_RQM 0x000C0000L /* Request Mode Mask */ |
| 106 | #define MCFDMA_DMR_RQM_DUAL 0x000C0000L /* Dual address mode, the only valid mode */ |
| 107 | #define MCFDMA_DMR_DSTM 0x00002000L /* Destination addressing mask */ |
| 108 | #define MCFDMA_DMR_DSTM_SA 0x00000000L /* Destination uses static addressing */ |
| 109 | #define MCFDMA_DMR_DSTM_IA 0x00002000L /* Destination uses incremental addressing */ |
| 110 | #define MCFDMA_DMR_DSTT_UD 0x00000400L /* Destination is user data */ |
| 111 | #define MCFDMA_DMR_DSTT_UC 0x00000800L /* Destination is user code */ |
| 112 | #define MCFDMA_DMR_DSTT_SD 0x00001400L /* Destination is supervisor data */ |
| 113 | #define MCFDMA_DMR_DSTT_SC 0x00001800L /* Destination is supervisor code */ |
| 114 | #define MCFDMA_DMR_DSTS_OFF 0x8 /* offset to the destination size bits */ |
| 115 | #define MCFDMA_DMR_DSTS_LONG 0x00000000L /* Long destination size */ |
| 116 | #define MCFDMA_DMR_DSTS_BYTE 0x00000100L /* Byte destination size */ |
| 117 | #define MCFDMA_DMR_DSTS_WORD 0x00000200L /* Word destination size */ |
| 118 | #define MCFDMA_DMR_DSTS_LINE 0x00000300L /* Line destination size */ |
| 119 | #define MCFDMA_DMR_SRCM 0x00000020L /* Source addressing mask */ |
| 120 | #define MCFDMA_DMR_SRCM_SA 0x00000000L /* Source uses static addressing */ |
| 121 | #define MCFDMA_DMR_SRCM_IA 0x00000020L /* Source uses incremental addressing */ |
| 122 | #define MCFDMA_DMR_SRCT_UD 0x00000004L /* Source is user data */ |
| 123 | #define MCFDMA_DMR_SRCT_UC 0x00000008L /* Source is user code */ |
| 124 | #define MCFDMA_DMR_SRCT_SD 0x00000014L /* Source is supervisor data */ |
| 125 | #define MCFDMA_DMR_SRCT_SC 0x00000018L /* Source is supervisor code */ |
| 126 | #define MCFDMA_DMR_SRCS_OFF 0x0 /* Offset to the source size bits */ |
| 127 | #define MCFDMA_DMR_SRCS_LONG 0x00000000L /* Long source size */ |
| 128 | #define MCFDMA_DMR_SRCS_BYTE 0x00000001L /* Byte source size */ |
| 129 | #define MCFDMA_DMR_SRCS_WORD 0x00000002L /* Word source size */ |
| 130 | #define MCFDMA_DMR_SRCS_LINE 0x00000003L /* Line source size */ |
| 131 | |
| 132 | /* Bit definitions for the DMA interrupt register (DIR) */ |
| 133 | #define MCFDMA_DIR_INVEN 0x1000 /* Invalid Combination interrupt enable */ |
| 134 | #define MCFDMA_DIR_ASCEN 0x0800 /* Address Sequence Complete (Completion) interrupt enable */ |
| 135 | #define MCFDMA_DIR_TEEN 0x0200 /* Transfer Error interrupt enable */ |
| 136 | #define MCFDMA_DIR_TCEN 0x0100 /* Transfer Complete (a bus transfer, that is) interrupt enable */ |
| 137 | #define MCFDMA_DIR_INV 0x1000 /* Invalid Combination */ |
| 138 | #define MCFDMA_DIR_ASC 0x0008 /* Address Sequence Complete (DMA Completion) */ |
| 139 | #define MCFDMA_DIR_TE 0x0002 /* Transfer Error */ |
| 140 | #define MCFDMA_DIR_TC 0x0001 /* Transfer Complete */ |
| 141 | |
| 142 | #endif /* !defined(CONFIG_M5272) */ |
| 143 | |
| 144 | /****************************************************************************/ |
| 145 | #endif /* mcfdma_h */ |