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2590
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1 ********************************************************************
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2 * rbsuper.d - rbsuper definitions
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3 *
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4 * $Id$
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5 *
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6 * (C) 2004 Boisy G. Pitre - Licensed to Cloud-9
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7 *
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8 * These definitions make up the static storage environment for the
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9 * rbsuper driver. Low level drivers share these variables with
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10 * rbsuper, and also have an area reserved exclusively for their use.
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11 *
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12 * Edt/Rev YYYY/MM/DD Modified by
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13 * Comment
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14 * ------------------------------------------------------------------
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15 * 2004/04/10 Boisy G. Pitre
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16 * Created.
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17 *
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18 * 2005/11/27 Boisy G. Pitre
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19 * Moved SCSI base addresses and I/O offsets to here.
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20 *
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21 * 2005/12/13 Boisy G. Pitre
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22 * Employed a "trick" whereby driver's U is pointed UOFFSET bytes
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23 * into the static storage for faster, smaller code generation.
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24 *
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25 * 2005/12/13 Boisy G. Pitre
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26 * Rearranged order of driver statics for smaller code size
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27
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28 * Interface Address
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29 SDAddr SET $FF00
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30 SDMPI SET $FF
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31
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32 *
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33 * IT.DNS Definitions for all Low Level Drivers
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34 *
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35 DNS.HDB EQU %00001000
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36
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37 *
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38 * IT.DNS Definitions for Low Level SCSI Driver
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39 *
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40 DNS.TURBO EQU %00010000
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41
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42 maxcache SET 2048
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43 DrvCount EQU 8
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44 llreserve EQU 64
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45
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46 UOFFSET EQU DRVBEG+(DRVMEM*DrvCount)
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47
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48 ORG 0
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49 V.LLSema RMB 1 low-level semaphore variable
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50 V.LastDrv RMB 1 last drive to access cache
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51 V.PhysSect RMB 3 physical (HW) sector
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52 V.LogSect RMB 3 logical (256 byte) sector
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53 V.SectSize RMB 1 sector size
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54 V.SectCnt RMB 1 number of hw sectors to read from interface
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55 V.Log2Phys RMB 1 number of logical (256) byte sectors to 1 physical sector
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56 V.CchAddr RMB 2 address of cache in system memory
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57 V.CchSize RMB 2 size of cache in bytes
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58 V.CchPSpot RMB 2 pointer to target physical sector in cache
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59 V.CchLSpot RMB 2 pointer to target logical sector in cache
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60 V.CchDirty RMB 1 cache dirty flag (0 = cache is stable, !0 = cache is dirty)
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61 V.CchBase RMB 3 logical sector at start of cache
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62 V.HDBDrive RMB 1 IT.STP (used as HDB-DOS drive number if HDB-DOS partition)
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63 V.HDBPart RMB 1 HDB-DOS partition flag (0 = not HDB-DOS partition, !0 = is)
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64 V.SSCache RMB DrvCount sector size cache table for each drive
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65 V.LLAddr RMB 2 low level module address
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66 V.LLInit RMB 2 low level init entry point
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67 V.LLRead RMB 2 low level read entry point
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68 V.LLWrite RMB 2 low level write entry point
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69 V.LLGtSt RMB 2 low level getstat entry point
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70 V.LLStSt RMB 2 low level setstat entry point
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71 V.LLTerm RMB 2 low level term entry point
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72 * Low Level Driver Memory starts here
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73 V.LLMem EQU . start of low level driver memory
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74 RMB llreserve reserved area... low level driver uses this as it wants
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75 V.LLMemSz EQU .-V.LLMem
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76 * Note: we trick rbsuper to so that it thinks its static storage starts at
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77 * zero when it really starts beyond DRVBEG+(DRVMEM*DrvCount).
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78 RMB UOFFSET
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79 V.RBSuper EQU . end of RBSuper's (and ll driver's) memory requirements
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