1 /* 2 * Sun3 SCSI stuff by Erik Verbruggen (erik@bigmama.xtdnet.nl) 3 * 4 * Sun3 DMA additions by Sam Creasey (sammy@sammy.net) 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 * drew@colorado.edu 15 * +1 (303) 440-4894 16 * 17 * ALPHA RELEASE 1. 18 * 19 * For more information, please consult 20 * 21 * NCR 5380 Family 22 * SCSI Protocol Controller 23 * Databook 24 * 25 * NCR Microelectronics 26 * 1635 Aeroplaza Drive 27 * Colorado Springs, CO 80916 28 * 1+ (719) 578-3400 29 * 1+ (800) 334-5454 30 */ 31 32 /* 33 * $Log: cumana_NCR5380.h,v $ 34 */ 35 36 #ifndef SUN3_NCR5380_H 37 #define SUN3_NCR5380_H 38 39 #define SUN3SCSI_PUBLIC_RELEASE 1 40 41 /* 42 * Int: level 2 autovector 43 * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0> 44 */ 45 #define IRQ_SUN3_SCSI 2 46 #define IOBASE_SUN3_SCSI 0x00140000 47 48 #define IOBASE_SUN3_VMESCSI 0xff200000 49 50 static int sun3scsi_abort(struct scsi_cmnd *); 51 static int sun3scsi_detect (struct scsi_host_template *); 52 static const char *sun3scsi_info (struct Scsi_Host *); 53 static int sun3scsi_bus_reset(struct scsi_cmnd *); 54 static int sun3scsi_queue_command(struct Scsi_Host *, struct scsi_cmnd *); 55 static int sun3scsi_release (struct Scsi_Host *); 56 57 #ifndef CMD_PER_LUN 58 #define CMD_PER_LUN 2 59 #endif 60 61 #ifndef CAN_QUEUE 62 #define CAN_QUEUE 16 63 #endif 64 65 #ifndef SG_TABLESIZE 66 #define SG_TABLESIZE SG_NONE 67 #endif 68 69 #ifndef MAX_TAGS 70 #define MAX_TAGS 32 71 #endif 72 73 #ifndef USE_TAGGED_QUEUING 74 #define USE_TAGGED_QUEUING 1 75 #endif 76 77 #include <scsi/scsicam.h> 78 79 #ifdef SUN3_SCSI_VME 80 #define SUN3_SCSI_NAME "Sun3 NCR5380 VME SCSI" 81 #else 82 #define SUN3_SCSI_NAME "Sun3 NCR5380 SCSI" 83 #endif 84 85 #ifndef HOSTS_C 86 87 #define NCR5380_implementation_fields \ 88 int port, ctrl 89 90 #define NCR5380_local_declare() \ 91 struct Scsi_Host *_instance 92 93 #define NCR5380_setup(instance) \ 94 _instance = instance 95 96 #define NCR5380_read(reg) sun3scsi_read(reg) 97 #define NCR5380_write(reg, value) sun3scsi_write(reg, value) 98 99 #define NCR5380_intr sun3scsi_intr 100 #define NCR5380_queue_command sun3scsi_queue_command 101 #define NCR5380_bus_reset sun3scsi_bus_reset 102 #define NCR5380_abort sun3scsi_abort 103 #define NCR5380_proc_info sun3scsi_proc_info 104 #define NCR5380_dma_xfer_len(i, cmd, phase) \ 105 sun3scsi_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1) 106 107 #define NCR5380_dma_write_setup(instance, data, count) sun3scsi_dma_setup(data, count, 1) 108 #define NCR5380_dma_read_setup(instance, data, count) sun3scsi_dma_setup(data, count, 0) 109 #define NCR5380_dma_residual sun3scsi_dma_residual 110 111 #define BOARD_NORMAL 0 112 #define BOARD_NCR53C400 1 113 114 /* additional registers - mainly DMA control regs */ 115 /* these start at regbase + 8 -- directly after the NCR regs */ 116 struct sun3_dma_regs { 117 unsigned short dma_addr_hi; /* vme only */ 118 unsigned short dma_addr_lo; /* vme only */ 119 unsigned short dma_count_hi; /* vme only */ 120 unsigned short dma_count_lo; /* vme only */ 121 unsigned short udc_data; /* udc dma data reg (obio only) */ 122 unsigned short udc_addr; /* uda dma addr reg (obio only) */ 123 unsigned short fifo_data; /* fifo data reg, holds extra byte on 124 odd dma reads */ 125 unsigned short fifo_count; 126 unsigned short csr; /* control/status reg */ 127 unsigned short bpack_hi; /* vme only */ 128 unsigned short bpack_lo; /* vme only */ 129 unsigned short ivect; /* vme only */ 130 unsigned short fifo_count_hi; /* vme only */ 131 }; 132 133 /* ucd chip specific regs - live in dvma space */ 134 struct sun3_udc_regs { 135 unsigned short rsel; /* select regs to load */ 136 unsigned short addr_hi; /* high word of addr */ 137 unsigned short addr_lo; /* low word */ 138 unsigned short count; /* words to be xfer'd */ 139 unsigned short mode_hi; /* high word of channel mode */ 140 unsigned short mode_lo; /* low word of channel mode */ 141 }; 142 143 /* addresses of the udc registers */ 144 #define UDC_MODE 0x38 145 #define UDC_CSR 0x2e /* command/status */ 146 #define UDC_CHN_HI 0x26 /* chain high word */ 147 #define UDC_CHN_LO 0x22 /* chain lo word */ 148 #define UDC_CURA_HI 0x1a /* cur reg A high */ 149 #define UDC_CURA_LO 0x0a /* cur reg A low */ 150 #define UDC_CURB_HI 0x12 /* cur reg B high */ 151 #define UDC_CURB_LO 0x02 /* cur reg B low */ 152 #define UDC_MODE_HI 0x56 /* mode reg high */ 153 #define UDC_MODE_LO 0x52 /* mode reg low */ 154 #define UDC_COUNT 0x32 /* words to xfer */ 155 156 /* some udc commands */ 157 #define UDC_RESET 0 158 #define UDC_CHN_START 0xa0 /* start chain */ 159 #define UDC_INT_ENABLE 0x32 /* channel 1 int on */ 160 161 /* udc mode words */ 162 #define UDC_MODE_HIWORD 0x40 163 #define UDC_MODE_LSEND 0xc2 164 #define UDC_MODE_LRECV 0xd2 165 166 /* udc reg selections */ 167 #define UDC_RSEL_SEND 0x282 168 #define UDC_RSEL_RECV 0x182 169 170 /* bits in csr reg */ 171 #define CSR_DMA_ACTIVE 0x8000 172 #define CSR_DMA_CONFLICT 0x4000 173 #define CSR_DMA_BUSERR 0x2000 174 175 #define CSR_FIFO_EMPTY 0x400 /* fifo flushed? */ 176 #define CSR_SDB_INT 0x200 /* sbc interrupt pending */ 177 #define CSR_DMA_INT 0x100 /* dma interrupt pending */ 178 179 #define CSR_LEFT 0xc0 180 #define CSR_LEFT_3 0xc0 181 #define CSR_LEFT_2 0x80 182 #define CSR_LEFT_1 0x40 183 #define CSR_PACK_ENABLE 0x20 184 185 #define CSR_DMA_ENABLE 0x10 186 187 #define CSR_SEND 0x8 /* 1 = send 0 = recv */ 188 #define CSR_FIFO 0x2 /* reset fifo */ 189 #define CSR_INTR 0x4 /* interrupt enable */ 190 #define CSR_SCSI 0x1 191 192 #define VME_DATA24 0x3d00 193 194 // debugging printk's, taken from atari_scsi.h 195 /* Debugging printk definitions: 196 * 197 * ARB -> arbitration 198 * ASEN -> auto-sense 199 * DMA -> DMA 200 * HSH -> PIO handshake 201 * INF -> information transfer 202 * INI -> initialization 203 * INT -> interrupt 204 * LNK -> linked commands 205 * MAIN -> NCR5380_main() control flow 206 * NDAT -> no data-out phase 207 * NWR -> no write commands 208 * PIO -> PIO transfers 209 * PDMA -> pseudo DMA (unused on Atari) 210 * QU -> queues 211 * RSL -> reselections 212 * SEL -> selections 213 * USL -> usleep cpde (unused on Atari) 214 * LBS -> last byte sent (unused on Atari) 215 * RSS -> restarting of selections 216 * EXT -> extended messages 217 * ABRT -> aborting and resetting 218 * TAG -> queue tag handling 219 * MER -> merging of consec. buffers 220 * 221 */ 222 223 #include "NCR5380.h" 224 225 #if NDEBUG & NDEBUG_ARBITRATION 226 #define ARB_PRINTK(format, args...) \ 227 printk(KERN_DEBUG format , ## args) 228 #else 229 #define ARB_PRINTK(format, args...) 230 #endif 231 #if NDEBUG & NDEBUG_AUTOSENSE 232 #define ASEN_PRINTK(format, args...) \ 233 printk(KERN_DEBUG format , ## args) 234 #else 235 #define ASEN_PRINTK(format, args...) 236 #endif 237 #if NDEBUG & NDEBUG_DMA 238 #define DMA_PRINTK(format, args...) \ 239 printk(KERN_DEBUG format , ## args) 240 #else 241 #define DMA_PRINTK(format, args...) 242 #endif 243 #if NDEBUG & NDEBUG_HANDSHAKE 244 #define HSH_PRINTK(format, args...) \ 245 printk(KERN_DEBUG format , ## args) 246 #else 247 #define HSH_PRINTK(format, args...) 248 #endif 249 #if NDEBUG & NDEBUG_INFORMATION 250 #define INF_PRINTK(format, args...) \ 251 printk(KERN_DEBUG format , ## args) 252 #else 253 #define INF_PRINTK(format, args...) 254 #endif 255 #if NDEBUG & NDEBUG_INIT 256 #define INI_PRINTK(format, args...) \ 257 printk(KERN_DEBUG format , ## args) 258 #else 259 #define INI_PRINTK(format, args...) 260 #endif 261 #if NDEBUG & NDEBUG_INTR 262 #define INT_PRINTK(format, args...) \ 263 printk(KERN_DEBUG format , ## args) 264 #else 265 #define INT_PRINTK(format, args...) 266 #endif 267 #if NDEBUG & NDEBUG_LINKED 268 #define LNK_PRINTK(format, args...) \ 269 printk(KERN_DEBUG format , ## args) 270 #else 271 #define LNK_PRINTK(format, args...) 272 #endif 273 #if NDEBUG & NDEBUG_MAIN 274 #define MAIN_PRINTK(format, args...) \ 275 printk(KERN_DEBUG format , ## args) 276 #else 277 #define MAIN_PRINTK(format, args...) 278 #endif 279 #if NDEBUG & NDEBUG_NO_DATAOUT 280 #define NDAT_PRINTK(format, args...) \ 281 printk(KERN_DEBUG format , ## args) 282 #else 283 #define NDAT_PRINTK(format, args...) 284 #endif 285 #if NDEBUG & NDEBUG_NO_WRITE 286 #define NWR_PRINTK(format, args...) \ 287 printk(KERN_DEBUG format , ## args) 288 #else 289 #define NWR_PRINTK(format, args...) 290 #endif 291 #if NDEBUG & NDEBUG_PIO 292 #define PIO_PRINTK(format, args...) \ 293 printk(KERN_DEBUG format , ## args) 294 #else 295 #define PIO_PRINTK(format, args...) 296 #endif 297 #if NDEBUG & NDEBUG_PSEUDO_DMA 298 #define PDMA_PRINTK(format, args...) \ 299 printk(KERN_DEBUG format , ## args) 300 #else 301 #define PDMA_PRINTK(format, args...) 302 #endif 303 #if NDEBUG & NDEBUG_QUEUES 304 #define QU_PRINTK(format, args...) \ 305 printk(KERN_DEBUG format , ## args) 306 #else 307 #define QU_PRINTK(format, args...) 308 #endif 309 #if NDEBUG & NDEBUG_RESELECTION 310 #define RSL_PRINTK(format, args...) \ 311 printk(KERN_DEBUG format , ## args) 312 #else 313 #define RSL_PRINTK(format, args...) 314 #endif 315 #if NDEBUG & NDEBUG_SELECTION 316 #define SEL_PRINTK(format, args...) \ 317 printk(KERN_DEBUG format , ## args) 318 #else 319 #define SEL_PRINTK(format, args...) 320 #endif 321 #if NDEBUG & NDEBUG_USLEEP 322 #define USL_PRINTK(format, args...) \ 323 printk(KERN_DEBUG format , ## args) 324 #else 325 #define USL_PRINTK(format, args...) 326 #endif 327 #if NDEBUG & NDEBUG_LAST_BYTE_SENT 328 #define LBS_PRINTK(format, args...) \ 329 printk(KERN_DEBUG format , ## args) 330 #else 331 #define LBS_PRINTK(format, args...) 332 #endif 333 #if NDEBUG & NDEBUG_RESTART_SELECT 334 #define RSS_PRINTK(format, args...) \ 335 printk(KERN_DEBUG format , ## args) 336 #else 337 #define RSS_PRINTK(format, args...) 338 #endif 339 #if NDEBUG & NDEBUG_EXTENDED 340 #define EXT_PRINTK(format, args...) \ 341 printk(KERN_DEBUG format , ## args) 342 #else 343 #define EXT_PRINTK(format, args...) 344 #endif 345 #if NDEBUG & NDEBUG_ABORT 346 #define ABRT_PRINTK(format, args...) \ 347 printk(KERN_DEBUG format , ## args) 348 #else 349 #define ABRT_PRINTK(format, args...) 350 #endif 351 #if NDEBUG & NDEBUG_TAGS 352 #define TAG_PRINTK(format, args...) \ 353 printk(KERN_DEBUG format , ## args) 354 #else 355 #define TAG_PRINTK(format, args...) 356 #endif 357 #if NDEBUG & NDEBUG_MERGING 358 #define MER_PRINTK(format, args...) \ 359 printk(KERN_DEBUG format , ## args) 360 #else 361 #define MER_PRINTK(format, args...) 362 #endif 363 364 /* conditional macros for NCR5380_print_{,phase,status} */ 365 366 #define NCR_PRINT(mask) \ 367 ((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0) 368 369 #define NCR_PRINT_PHASE(mask) \ 370 ((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0) 371 372 #define NCR_PRINT_STATUS(mask) \ 373 ((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0) 374 375 376 377 #endif /* ndef HOSTS_C */ 378 #endif /* SUN3_NCR5380_H */ 379 380