2 * Sun3 SCSI stuff by Erik Verbruggen (erik@bigmama.xtdnet.nl)
4 * Sun3 DMA additions by Sam Creasey (sammy@sammy.net)
6 * Adapted from mac_scsinew.h:
9 * Cumana Generic NCR5380 driver defines
11 * Copyright 1993, Drew Eckhardt
13 * (Unix and Linux consulting and custom programming)
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
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 */
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 */
50 /* addresses of the udc registers */
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 */
63 /* some udc commands */
65 #define UDC_CHN_START 0xa0 /* start chain */
66 #define UDC_INT_ENABLE 0x32 /* channel 1 int on */
69 #define UDC_MODE_HIWORD 0x40
70 #define UDC_MODE_LSEND 0xc2
71 #define UDC_MODE_LRECV 0xd2
73 /* udc reg selections */
74 #define UDC_RSEL_SEND 0x282
75 #define UDC_RSEL_RECV 0x182
78 #define CSR_DMA_ACTIVE 0x8000
79 #define CSR_DMA_CONFLICT 0x4000
80 #define CSR_DMA_BUSERR 0x2000
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 */
87 #define CSR_LEFT_3 0xc0
88 #define CSR_LEFT_2 0x80
89 #define CSR_LEFT_1 0x40
90 #define CSR_PACK_ENABLE 0x20
92 #define CSR_DMA_ENABLE 0x10
94 #define CSR_SEND 0x8 /* 1 = send 0 = recv */
95 #define CSR_FIFO 0x2 /* reset fifo */
96 #define CSR_INTR 0x4 /* interrupt enable */
99 #define VME_DATA24 0x3d00
101 #endif /* SUN3_SCSI_H */