projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Sun3 SCSI stuff by Erik Verbruggen ([email protected]) | |
| 3 | * | |
| 4 | * Sun3 DMA additions by Sam Creasey ([email protected]) | |
| 5 | * | |
| 6 | * Adapted from mac_scsinew.h: | |
| 7 | */ | |
| 8 | /* | |
| 9 | * Cumana Generic NCR5380 driver defines | |
| 10 | * | |
| 11 | * Copyright 1993, Drew Eckhardt | |
| 12 | * Visionary Computing | |
| 13 | * (Unix and Linux consulting and custom programming) | |
| 14 | * [email protected] | |
| 15 | * +1 (303) 440-4894 | |
| 1da177e4 LT |
16 | */ |
| 17 | ||
| 9f6620a3 FT |
18 | #ifndef SUN3_SCSI_H |
| 19 | #define SUN3_SCSI_H | |
| 1da177e4 | 20 | |
| 1da177e4 LT |
21 | /* additional registers - mainly DMA control regs */ |
| 22 | /* these start at regbase + 8 -- directly after the NCR regs */ | |
| 23 | struct sun3_dma_regs { | |
| 24 | unsigned short dma_addr_hi; /* vme only */ | |
| 25 | unsigned short dma_addr_lo; /* vme only */ | |
| 26 | unsigned short dma_count_hi; /* vme only */ | |
| 27 | unsigned short dma_count_lo; /* vme only */ | |
| 28 | unsigned short udc_data; /* udc dma data reg (obio only) */ | |
| 29 | unsigned short udc_addr; /* uda dma addr reg (obio only) */ | |
| 30 | unsigned short fifo_data; /* fifo data reg, holds extra byte on | |
| 31 | odd dma reads */ | |
| 32 | unsigned short fifo_count; | |
| 33 | unsigned short csr; /* control/status reg */ | |
| 34 | unsigned short bpack_hi; /* vme only */ | |
| 35 | unsigned short bpack_lo; /* vme only */ | |
| 36 | unsigned short ivect; /* vme only */ | |
| 37 | unsigned short fifo_count_hi; /* vme only */ | |
| 38 | }; | |
| 39 | ||
| 40 | /* ucd chip specific regs - live in dvma space */ | |
| 41 | struct sun3_udc_regs { | |
| 42 | unsigned short rsel; /* select regs to load */ | |
| 43 | unsigned short addr_hi; /* high word of addr */ | |
| 44 | unsigned short addr_lo; /* low word */ | |
| 45 | unsigned short count; /* words to be xfer'd */ | |
| 46 | unsigned short mode_hi; /* high word of channel mode */ | |
| 47 | unsigned short mode_lo; /* low word of channel mode */ | |
| 48 | }; | |
| 49 | ||
| 50 | /* addresses of the udc registers */ | |
| 51 | #define UDC_MODE 0x38 | |
| 52 | #define UDC_CSR 0x2e /* command/status */ | |
| 53 | #define UDC_CHN_HI 0x26 /* chain high word */ | |
| 54 | #define UDC_CHN_LO 0x22 /* chain lo word */ | |
| 55 | #define UDC_CURA_HI 0x1a /* cur reg A high */ | |
| 56 | #define UDC_CURA_LO 0x0a /* cur reg A low */ | |
| 57 | #define UDC_CURB_HI 0x12 /* cur reg B high */ | |
| 58 | #define UDC_CURB_LO 0x02 /* cur reg B low */ | |
| 59 | #define UDC_MODE_HI 0x56 /* mode reg high */ | |
| 60 | #define UDC_MODE_LO 0x52 /* mode reg low */ | |
| 61 | #define UDC_COUNT 0x32 /* words to xfer */ | |
| 62 | ||
| 63 | /* some udc commands */ | |
| 64 | #define UDC_RESET 0 | |
| 65 | #define UDC_CHN_START 0xa0 /* start chain */ | |
| 66 | #define UDC_INT_ENABLE 0x32 /* channel 1 int on */ | |
| 67 | ||
| 68 | /* udc mode words */ | |
| 69 | #define UDC_MODE_HIWORD 0x40 | |
| 70 | #define UDC_MODE_LSEND 0xc2 | |
| 71 | #define UDC_MODE_LRECV 0xd2 | |
| 72 | ||
| 73 | /* udc reg selections */ | |
| 74 | #define UDC_RSEL_SEND 0x282 | |
| 75 | #define UDC_RSEL_RECV 0x182 | |
| 76 | ||
| 77 | /* bits in csr reg */ | |
| 78 | #define CSR_DMA_ACTIVE 0x8000 | |
| 79 | #define CSR_DMA_CONFLICT 0x4000 | |
| 80 | #define CSR_DMA_BUSERR 0x2000 | |
| 81 | ||
| 82 | #define CSR_FIFO_EMPTY 0x400 /* fifo flushed? */ | |
| 83 | #define CSR_SDB_INT 0x200 /* sbc interrupt pending */ | |
| 84 | #define CSR_DMA_INT 0x100 /* dma interrupt pending */ | |
| 85 | ||
| 86 | #define CSR_LEFT 0xc0 | |
| 87 | #define CSR_LEFT_3 0xc0 | |
| 88 | #define CSR_LEFT_2 0x80 | |
| 89 | #define CSR_LEFT_1 0x40 | |
| 90 | #define CSR_PACK_ENABLE 0x20 | |
| 91 | ||
| 92 | #define CSR_DMA_ENABLE 0x10 | |
| 93 | ||
| 94 | #define CSR_SEND 0x8 /* 1 = send 0 = recv */ | |
| 95 | #define CSR_FIFO 0x2 /* reset fifo */ | |
| 96 | #define CSR_INTR 0x4 /* interrupt enable */ | |
| 97 | #define CSR_SCSI 0x1 | |
| 98 | ||
| 99 | #define VME_DATA24 0x3d00 | |
| 100 | ||
| 9f6620a3 | 101 | #endif /* SUN3_SCSI_H */ |
| 1da177e4 | 102 |