1 /* vdreg.h 1.12 88/05/21 */ 2 3 /* 4 * Versabus VDDC/SMDE disk controller definitions. 5 */ 6 #define VDDC_SECSIZE 512 /* sector size for VDDC */ 7 #define VD_MAXSECSIZE 1024 /* max sector size for SMD/E */ 8 9 /* 10 * Controller communications block. 11 */ 12 struct vddevice { 13 u_long vdcdr; /* controller device register */ 14 u_long vdreset; /* controller reset register */ 15 u_long vdcsr; /* control-status register */ 16 long vdrstclr; /* reset clear register */ 17 u_short vdstatus[16]; /* per-drive status register */ 18 u_short vdicf_status; /* status change interupt control format */ 19 u_short vdicf_done; /* interrupt complete control format */ 20 u_short vdicf_error; /* interrupt error control format */ 21 u_short vdicf_success; /* interrupt success control format */ 22 u_short vdtcf_mdcb; /* mdcb transfer control format */ 23 u_short vdtcf_dcb; /* dcb transfer control format */ 24 u_short vdtcf_trail; /* trail transfer control format */ 25 u_short vdtcf_data; /* data transfer control format */ 26 u_long vdccf; /* controller configuration flags */ 27 u_long vdsecsize; /* sector size */ 28 u_short vdfill0; 29 u_char vdcylskew; /* cylinder to cylinder skew factor */ 30 u_char vdtrackskew; /* track to track skew factor */ 31 u_long vdfill1; 32 u_long vddfr; /* diagnostic flag register */ 33 u_long vddda; /* diagnostic dump address */ 34 }; 35 36 /* controller types */ 37 #define VDTYPE_VDDC 1 /* old vddc controller (smd only) */ 38 #define VDTYPE_SMDE 2 /* new smde controller (smd-e) */ 39 40 /* 41 * Controller status definitions. 42 */ 43 #define CS_SCS 0xf /* status change source (drive number) */ 44 #define CS_ELC 0x10 /* error on last command */ 45 #define CS_ICC 0x60 /* interupt cause code */ 46 #define ICC_NOI 0x00 /* no interupt */ 47 #define ICC_DUN 0x20 /* no interupt */ 48 #define ICC_ERR 0x40 /* no interupt */ 49 #define ICC_SUC 0x60 /* no interupt */ 50 #define CS_GO 0x80 /* go bit (controller busy) */ 51 #define CS_BE 0x100 /* buss error */ 52 #define CS_BOK 0x4000 /* board ok */ 53 #define CS_SFL 0x8000 /* system fail */ 54 #define CS_LEC 0xff000000 /* last error code */ 55 56 /* 57 * Drive status definitions. 58 */ 59 #define STA_UR 0x1 /* unit ready */ 60 #define STA_OC 0x2 /* on cylinder */ 61 #define STA_SE 0x4 /* seek error */ 62 #define STA_DF 0x8 /* drive fault */ 63 #define STA_WP 0x10 /* write protected */ 64 #define STA_US 0x20 /* unit selected */ 65 66 /* 67 * Interupt Control Field definitions. 68 */ 69 #define ICF_IPL 0x7 /* interupt priority level */ 70 #define ICF_IEN 0x8 /* interupt enable */ 71 #define ICF_IV 0xff00 /* interupt vector */ 72 73 /* 74 * Transfer Control Format definitions. 75 */ 76 #define TCF_AM 0xff /* Address Modifier */ 77 #define AM_SNPDA 0x01 /* Standard Non-Privileged Data Access */ 78 #define AM_SASA 0x81 /* Standard Ascending Sequential Access */ 79 #define AM_ENPDA 0xf1 /* Extended Non-Privileged Data Access */ 80 #define AM_EASA 0xe1 /* Extended Ascending Sequential Access */ 81 #define TCF_BTE 0x800 /* Block Transfer Enable */ 82 83 /* 84 * Controller Configuration Flags. 85 */ 86 #define CCF_STS 0x1 /* sectors per track selectable */ 87 #define CCF_EAV 0x2 /* enable auto vector */ 88 #define CCF_ERR 0x4 /* enable reset register */ 89 #define CCF_DER 0x8 /* disable error recovery */ 90 #define CCF_XMD 0x60 /* xmd transfer mode (bus size) */ 91 #define XMD_8BIT 0x20 /* do only 8 bit transfers */ 92 #define XMD_16BIT 0x40 /* do only 16 bit transfers */ 93 #define XMD_32BIT 0x60 /* do only 32 bit transfers */ 94 #define CCF_BSZ 0x300 /* burst size */ 95 #define BSZ_16WRD 0x000 /* 16 word transfer burst */ 96 #define BSZ_12WRD 0x100 /* 12 word transfer burst */ 97 #define BSZ_8WRD 0x200 /* 8 word transfer burst */ 98 #define BSZ_4WRD 0x300 /* 4 word transfer burst */ 99 #define CCF_SEN 0x400 /* cylinder/track skew enable (for format) */ 100 #define CCF_ENP 0x1000 /* enable parity */ 101 #define CCF_EPE 0x2000 /* enable parity errors */ 102 #define CCF_EDE 0x10000 /* error detection enable */ 103 #define CCF_ECE 0x20000 /* error correction enable */ 104 105 /* 106 * Diagnostic register definitions. 107 */ 108 #define DIA_DC 0x7f /* dump count mask */ 109 #define DIA_DWR 0x80 /* dump write/read flag */ 110 #define DIA_ARE 0x100 /* auto rebuild enable */ 111 #define DIA_CEN 0x200 /* call enable flag */ 112 #define DIA_KEY 0xAA550000 /* reset enable key */ 113 114 /* 115 * Hardware interface flags, in dcb.devselect and d_devflags 116 */ 117 #define VD_ESDI 0x10 /* drive is on ESDI interface */ 118 #define d_devflags d_drivedata[0] /* in disk label */ 119 120 /* 121 * Error recovery flags. 122 */ 123 #define VDRF_RTZ 0x0001 /* return to zero */ 124 #define VDRF_OCF 0x0002 /* on cylinder false */ 125 #define VDRF_OSP 0x0004 /* offset plus */ 126 #define VDRF_OSM 0x0008 /* offset minus */ 127 #define VDRF_DSE 0x0080 /* data strobe early */ 128 #define VDRF_DSL 0x0100 /* data strobe late */ 129 130 #define VDRF_NONE 0 131 #define VDRF_NORMAL (VDRF_RTZ|VDRF_OCF|VDRF_OSP|VDRF_OSM|VDRF_DSE|VDRF_DSE) 132 133 /* 134 * Perform a reset on the controller. 135 */ 136 #define VDRESET(a,t) { \ 137 if ((t) == VDTYPE_SMDE) { \ 138 ((struct vddevice *)(a))->vddfr = DIA_KEY|DIA_CEN; \ 139 ((struct vddevice *)(a))->vdcdr = (u_long)0xffffffff; \ 140 DELAY(5000000); \ 141 } else { \ 142 ((struct vddevice *)(a))->vdreset = 0; \ 143 DELAY(1500000); \ 144 } \ 145 } 146 147 /* 148 * Abort a controller operation. 149 */ 150 #define VDABORT(a,t) { \ 151 if ((t) == VDTYPE_VDDC) { \ 152 movow((a), (VDOP_ABORT&0xffff0000)>>16) ; \ 153 movow((int)(a)+2, VDOP_ABORT&0xffff); \ 154 } else \ 155 ((struct vddevice *)(a))->vdcdr = (u_long)VDOP_ABORT; \ 156 DELAY(1000000); \ 157 } 158 159 /* 160 * Start a command. 161 */ 162 #define VDGO(a,mdcb,t) {\ 163 if ((t) == VDTYPE_VDDC) { \ 164 movow((a), ((int)(mdcb)&0xffff0000)>>16) ; \ 165 movow((int)((a))+2, (int)(mdcb)&0xffff); \ 166 } else \ 167 ((struct vddevice *)(a))->vdcdr = (mdcb); \ 168 } 169 170 /* 171 * MDCB layout. 172 */ 173 struct mdcb { 174 struct dcb *mdcb_head; /* first dcb in list */ 175 struct dcb *mdcb_busy; /* dcb being processed */ 176 struct dcb *mdcb_intr; /* dcb causing interrupt */ 177 long mdcb_status; /* status of dcb in mdcb_busy */ 178 }; 179 180 /* 181 * DCB definitions. 182 */ 183 184 /* 185 * A disk address. 186 */ 187 typedef struct { 188 u_char track; /* all 8 bits */ 189 u_char sector; /* all 8 bits */ 190 u_short cylinder; /* low order 12 bits */ 191 } dskadr; 192 193 /* 194 * DCB trailer formats. 195 */ 196 /* read/write trailer */ 197 struct trrw { 198 u_long memadr; /* memory address */ 199 u_long wcount; /* 16 bit word count */ 200 dskadr disk; /* disk address */ 201 }; 202 203 /* scatter/gather trailer */ 204 #define VDMAXPAGES (MAXPHYS / NBPG) 205 struct trsg { 206 struct trrw start_addr; 207 struct addr_chain { 208 u_long nxt_addr; 209 u_long nxt_len; 210 } addr_chain[VDMAXPAGES + 1]; 211 }; 212 213 /* seek trailer format */ 214 struct trseek { 215 dskadr skaddr; 216 }; 217 218 /* format trailer */ 219 struct trfmt { 220 char *addr; /* data buffer to be filled on sector*/ 221 long nsectors; /* # of sectors to be formatted */ 222 dskadr disk; /* disk physical address info */ 223 dskadr hdr; /* header address info */ 224 }; 225 226 /* reset/configure trailer */ 227 struct treset { 228 long ncyl; /* # cylinders */ 229 long nsurfaces; /* # surfaces */ 230 long nsectors; /* # sectors */ 231 long slip_sec; /* # of slip sectors */ 232 long recovery; /* recovery flags */ 233 }; 234 235 /* ident trailer */ 236 struct trid { 237 long name; 238 long id; 239 long date; 240 }; 241 242 /* 243 * DCB layout. 244 */ 245 struct dcb { 246 struct dcb *nxtdcb; /* next dcb */ 247 short intflg; /* interrupt settings and flags */ 248 short opcode; /* DCB command code etc... */ 249 long operrsta; /* error & status info */ 250 short fill; /* not used */ 251 char devselect; /* drive selection */ 252 char trailcnt; /* trailer Word Count */ 253 long err_memadr; /* error memory address */ 254 char err_code; /* error codes for SMD/E */ 255 char fill2; /* not used */ 256 short err_wcount; /* error word count */ 257 char err_trk; /* error track/sector */ 258 char err_sec; /* error track/sector */ 259 short err_cyl; /* error cylinder adr */ 260 union { 261 struct trid idtrail; /* ident command trailer */ 262 struct trseek sktrail; /* seek command trailer */ 263 struct trsg sgtrail; /* scatter/gather trailer */ 264 struct trrw rwtrail; /* read/write trailer */ 265 struct trfmt fmtrail; /* format trailer */ 266 struct treset rstrail; /* reset/configure trailer */ 267 } trail; 268 }; 269 270 /* 271 * smaller DCB with seek trailer only (no scatter-gather). 272 */ 273 struct skdcb { 274 struct dcb *nxtdcb; /* next dcb */ 275 short intflg; /* interrupt settings and flags */ 276 short opcode; /* DCB command code etc... */ 277 long operrsta; /* error & status info */ 278 short fill; /* not used */ 279 char devselect; /* drive selection */ 280 char trailcnt; /* trailer Word Count */ 281 long err_memadr; /* error memory address */ 282 char err_code; /* error codes for SMD/E */ 283 char fill2; /* not used */ 284 short err_wcount; /* error word count */ 285 char err_trk; /* error track/sector */ 286 char err_sec; /* error track/sector */ 287 short err_cyl; /* error cylinder adr */ 288 union { 289 struct trseek sktrail; /* seek command trailer */ 290 } trail; 291 }; 292 293 /* 294 * DCB command codes. 295 */ 296 #define VDOP_RD 0x80 /* read data */ 297 #define VDOP_FTR 0xc0 /* full track read */ 298 #define VDOP_RAS 0x90 /* read and scatter */ 299 #define VDOP_RDRAW 0x600 /* read unformatted disk sector */ 300 #define VDOP_CMP 0xa0 /* compare */ 301 #define VDOP_FTC 0xe0 /* full track compare */ 302 #define VDOP_RHDE 0x180 /* read header, data & ecc */ 303 #define VDOP_WD 0x00 /* write data */ 304 #define VDOP_FTW 0x40 /* full track write */ 305 #define VDOP_WTC 0x20 /* write then compare */ 306 #define VDOP_FTWTC 0x60 /* full track write then compare */ 307 #define VDOP_GAW 0x10 /* gather and write */ 308 #define VDOP_WDE 0x100 /* write data & ecc */ 309 #define VDOP_FSECT 0x900 /* format sector */ 310 #define VDOP_GWC 0x30 /* gather write & compare */ 311 #define VDOP_START 0x800 /* start drives */ 312 #define VDOP_RELEASE 0xa00 /* stop drives */ 313 #define VDOP_SEEK 0xb00 /* seek */ 314 #define VDOP_INIT 0xc00 /* initialize controller */ 315 #define VDOP_DIAG 0xd00 /* diagnose (self-test) controller */ 316 #define VDOP_CONFIG 0xe00 /* reset & configure drive */ 317 #define VDOP_STATUS 0xf00 /* get drive status */ 318 #define VDOP_IDENT 0x700 /* identify controller */ 319 320 #define VDOP_ABORT 0x80000000 /* abort current command */ 321 322 /* 323 * DCB status definitions. 324 */ 325 #define DCBS_HCRC 0x00000001 /* header crc error */ 326 #define DCBS_HCE 0x00000002 /* header compare error */ 327 #define DCBS_WPT 0x00000004 /* drive write protected */ 328 #define DCBS_CHE 0x00000008 /* controller hardware error */ 329 #define DCBS_SKI 0x00000010 /* seek incomplete */ 330 #define DCBS_UDE 0x00000020 /* uncorrectable data error */ 331 #define DCBS_OCYL 0x00000040 /* off cylinder */ 332 #define DCBS_NRDY 0x00000080 /* drive not ready */ 333 #define DCBS_ATA 0x00000100 /* alternate track accessed */ 334 #define DCBS_SKS 0x00000200 /* seek started */ 335 #define DCBS_IVA 0x00000400 /* invalid disk address error */ 336 #define DCBS_NEM 0x00000800 /* non-existant memory error */ 337 #define DCBS_DPE 0x00001000 /* memory data parity error */ 338 #define DCBS_DCE 0x00002000 /* data compare error */ 339 #define DCBS_DDI 0x00004000 /* ddi ready */ 340 #define DCBS_OAB 0x00008000 /* operation aborted */ 341 #define DCBS_DSE 0x00010000 /* data strobe early */ 342 #define DCBS_DSL 0x00020000 /* data strobe late */ 343 #define DCBS_TOP 0x00040000 /* track offset plus */ 344 #define DCBS_TOM 0x00080000 /* track offset minus */ 345 #define DCBS_CCD 0x00100000 /* controller corrected data */ 346 #define DCBS_HARD 0x00200000 /* hard error */ 347 #define DCBS_SOFT 0x00400000 /* soft error (retry succesful) */ 348 #define DCBS_ERR 0x00800000 /* composite error */ 349 #define DCBS_IVC 0x01000000 /* invalid command error */ 350 /* bits 24-27 unused */ 351 #define DCBS_BSY 0x10000000 /* controller busy */ 352 #define DCBS_ICC 0x60000000 /* interrupt cause code */ 353 #define DCBS_INT 0x80000000 /* interrupt generated for this dcb */ 354 355 #define VDERRBITS "\20\1HCRC\2HCE\3WPT\4CHE\5DSKI\6UDE\7OCYL\10NRDY\ 356 \11ATA\12SKS\13IVA\14NEM\15DPE\16DCE\17DDI\20OAB\21DSE\22DSL\23TOP\24TOM\ 357 \25CCD\26HARD\27SOFT\30ERR\31IVC\35ABORTED\36FAIL\37COMPLETE\40STARTED" 358 359 /* drive related errors */ 360 #define VDERR_DRIVE (DCBS_SKI|DCBS_OCYL|DCBS_NRDY|DCBS_IVA) 361 /* controller related errors */ 362 #define VDERR_CTLR (DCBS_CHE|DCBS_OAB|DCBS_IVC|DCBS_NEM) 363 /* potentially recoverable errors */ 364 #define VDERR_RETRY \ 365 (VDERR_DRIVE|VDERR_CTLR|DCBS_DCE|DCBS_DPE|DCBS_HCRC|DCBS_HCE) 366 /* uncorrected data errors */ 367 #define VDERR_HARD (VDERR_RETRY|DCBS_WPT|DCBS_UDE) 368 369 /* 370 * DCB status codes. 371 */ 372 #define DCBS_ABORT 0x10000000 /* dcb aborted */ 373 #define DCBS_FAIL 0x20000000 /* dcb unsuccesfully completed */ 374 #define DCBS_DONE 0x40000000 /* dcb complete */ 375 #define DCBS_START 0x80000000 /* dcb started */ 376 377 /* 378 * DCB interrupt control. 379 */ 380 #define DCBINT_NONE 0x0 /* don't interrupt */ 381 #define DCBINT_ERR 0x2 /* interrupt on error */ 382 #define DCBINT_SUC 0x1 /* interrupt on success */ 383 #define DCBINT_DONE (DCBINT_ERR|DCBINT_SUC) 384 #define DCBINT_PBA 0x4 /* proceed before acknowledge */ 385 386 /* 387 * Sector formats. 388 */ 389 typedef union { 390 struct { 391 dskadr hdr_addr; 392 short smd_crc; 393 } smd; 394 struct { 395 dskadr physical; 396 dskadr logical; 397 long smd_e_crc; 398 } smd_e; 399 } fmt_hdr; 400 401 /* Sector Header bit assignments */ 402 #define VDMF 0x8000 /* Manufacturer Fault 1=good sector */ 403 #define VDUF 0x4000 /* User Fault 1=good sector */ 404 #define VDALT 0x2000 /* Alternate Sector 1=alternate */ 405 #define VDWPT 0x1000 /* Write Protect 1=Read Only Sector */ 406 407 /* input register assignments for DIOCWFORMAT ioctl */ 408 #define dk_op df_reg[0] /* opcode */ 409 #define dk_althdr df_reg[1] /* alt. sect. header, in an int! */ 410 #define dk_fmtflags df_reg[2] /* header format flags */ 411 412 /* output register assignments for DIOCWFORMAT ioctl */ 413 #define dk_operrsta df_reg[0] /* dcb operrsta */ 414 #define dk_ecode df_reg[1] /* smd-e err_code */ 415