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/* pdp11_rq.c: MSCP disk controller simulator
Copyright (c) 2002-2003, Robert M Supnik
Derived from work by Stephen F. Shirron
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Robert M Supnik shall not
be used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Robert M Supnik.
rq RQDX3 disk controller
07-Oct-03 RMS Fixed problem with multiple RAUSER drives
17-Sep-03 RMS Fixed MB to LBN conversion to be more accurate
11-Jul-03 RMS Fixed bug in user disk size (found by Chaskiel M Grundman)
19-May-03 RMS Revised for new conditional compilation scheme
25-Apr-03 RMS Revised for extended file support
14-Mar-03 RMS Fixed variable size interaction with save/restore
27-Feb-03 RMS Added user-defined drive support
26-Feb-03 RMS Fixed bug in vector calculation for VAXen
22-Feb-03 RMS Fixed ordering bug in queue process
12-Oct-02 RMS Added multicontroller support
29-Sep-02 RMS Changed addressing to 18b in Unibus mode
Added variable address support to bootstrap
Added vector display support
Fixed status code in HBE error log
Consolidated MSCP/TMSCP header file
New data structures
16-Aug-02 RMS Removed unused variables (found by David Hittner)
04-May-02 RMS Fixed bug in polling loop for queued operations
26-Mar-02 RMS Fixed bug, reset routine cleared UF_WPH
09-Mar-02 RMS Adjusted delays for M+ timing bugs
04-Mar-02 RMS Added delays to initialization for M+, RSTS/E
16-Feb-02 RMS Fixed bugs in host timeout logic, boot
26-Jan-02 RMS Revised bootstrap to conform to M9312
06-Jan-02 RMS Revised enable/disable support
30-Dec-01 RMS Revised show routines
19-Dec-01 RMS Added bigger drives
17-Dec-01 RMS Added queue process
*/
#if defined (VM_PDP10) /* PDP10 version */
#error "RQDX3 not supported on PDP-10!"
#elif defined (VM_VAX) /* VAX version */
#include "vax_defs.h"
#define RQ_AINC 4
#define RQ_WID 32
extern int32 int_req[IPL_HLVL];
extern int32 int_vec[IPL_HLVL][32];
#else /* PDP-11 version */
#include "pdp11_defs.h"
#define RQ_AINC 2
#define RQ_WID 16
extern int32 cpu_18b, cpu_ubm;
extern int32 int_req[IPL_HLVL];
extern int32 int_vec[IPL_HLVL][32];
#endif
#if !defined (RQ_NUMCT)
#define RQ_NUMCT 4
#elif (RQ_NUMCT > 4)
#error "Assertion failure: RQ_NUMCT exceeds 4"
#endif
#include "pdp11_uqssp.h"
#include "pdp11_mscp.h"
#define UF_MSK (UF_CMR|UF_CMW) /* settable flags */
#define RQ_SH_MAX 24 /* max display wds */
#define RQ_SH_PPL 8 /* wds per line */
#define RQ_SH_DPL 4 /* desc per line */
#define RQ_SH_RI 001 /* show rings */
#define RQ_SH_FR 002 /* show free q */
#define RQ_SH_RS 004 /* show resp q */
#define RQ_SH_UN 010 /* show unit q's */
#define RQ_CLASS 1 /* RQ class */
#define RQ_UQPM 19 /* UQ port model */
#define RQ_MODEL 19 /* MSCP ctrl model */
#define RQ_HVER 1 /* hardware version */
#define RQ_SVER 3 /* software version */
#define RQ_DHTMO 60 /* def host timeout */
#define RQ_DCTMO 120 /* def ctrl timeout */
#define RQ_NUMDR 4 /* # drives */
#define RQ_NUMBY 512 /* bytes per block */
#define RQ_MAXFR (1 << 16) /* max xfer */
#define UNIT_V_ONL (UNIT_V_UF + 0) /* online */
#define UNIT_V_WLK (UNIT_V_UF + 1) /* hwre write lock */
#define UNIT_V_ATP (UNIT_V_UF + 2) /* attn pending */
#define UNIT_V_DTYPE (UNIT_V_UF + 3) /* drive type */
#define UNIT_M_DTYPE 0xF
#define UNIT_ONL (1 << UNIT_V_ONL)
#define UNIT_WLK (1 << UNIT_V_WLK)
#define UNIT_ATP (1 << UNIT_V_ATP)
#define UNIT_DTYPE (UNIT_M_DTYPE << UNIT_V_DTYPE)
#define GET_DTYPE(x) (((x) >> UNIT_V_DTYPE) & UNIT_M_DTYPE)
#define cpkt u3 /* current packet */
#define pktq u4 /* packet queue */
#define uf buf /* settable unit flags */
#define cnum wait /* controller index */
#define UNIT_WPRT (UNIT_WLK | UNIT_RO) /* write prot */
#define RQ_RMV(u) ((drv_tab[GET_DTYPE (u->flags)].flgs & RQDF_RMV)? \
UF_RMV: 0)
#define RQ_WPH(u) (((drv_tab[GET_DTYPE (u->flags)].flgs & RQDF_RO) || \
(u->flags & UNIT_WPRT))? UF_WPH: 0)
#define CST_S1 0 /* init stage 1 */
#define CST_S1_WR 1 /* stage 1 wrap */
#define CST_S2 2 /* init stage 2 */
#define CST_S3 3 /* init stage 3 */
#define CST_S3_PPA 4 /* stage 3 sa wait */
#define CST_S3_PPB 5 /* stage 3 ip wait */
#define CST_S4 6 /* stage 4 */
#define CST_UP 7 /* online */
#define CST_DEAD 8 /* fatal error */
#define ERR 0 /* must be SCPE_OK! */
#define OK 1
#define RQ_TIMER (RQ_NUMDR)
#define RQ_QUEUE (RQ_TIMER + 1)
/* Internal packet management. The real RQDX3 manages its packets as true
linked lists. However, use of actual addresses in structures won't work
with save/restore. Accordingly, the packets are an arrayed structure,
and links are actually subscripts. To minimize complexity, packet[0]
is not used (0 = end of list), and the number of packets must be a power
of two.
*/
#define RQ_NPKTS 32 /* # packets (pwr of 2) */
#define RQ_M_NPKTS (RQ_NPKTS - 1) /* mask */
#define RQ_PKT_SIZE_W 32 /* payload size (wds) */
#define RQ_PKT_SIZE (RQ_PKT_SIZE_W * sizeof (int16))
struct rqpkt {
int16 link; /* link to next */
uint16 d[RQ_PKT_SIZE_W]; }; /* data */
/* Packet payload extraction and insertion; cp defines controller */
#define GETP(p,w,f) ((cp->pak[p].d[w] >> w##_V_##f) & w##_M_##f)
#define GETP32(p,w) (((uint32) cp->pak[p].d[w]) | \
(((uint32) cp->pak[p].d[(w)+1]) << 16))
#define PUTP32(p,w,x) cp->pak[p].d[w] = (x) & 0xFFFF; \
cp->pak[p].d[(w)+1] = ((x) >> 16) & 0xFFFF
/* Disk formats. An RQDX3 consists of the following regions:
XBNs Extended blocks - contain information about disk format,
also holds track being reformatted during bad block repl.
Size = sectors/track + 1, replicated 3 times.
DBNs Diagnostic blocks - used by diagnostics. Sized to pad
out the XBNs to a cylinder boundary.
LBNs Logical blocks - contain user information.
RCT Replacement control table - first block contains status,
second contains data from block being replaced, remaining
contain information about replaced bad blocks.
Size = RBNs/128 + 3, replicated 4-8 times.
RBNs Replacement blocks - used to replace bad blocks.
The simulator does not need to perform bad block replacement; the
information below is for simulating RCT reads, if required.
Note that an RA drive has a different order: LBNs, RCT, XBN, DBN;
the RBNs are spare blocks at the end of every track.
*/
#define RCT_OVHD 2 /* #ovhd blks */
#define RCT_ENTB 128 /* entries/blk */
#define RCT_END 0x80000000 /* marks RCT end */
/* The RQDX3 supports multiple disk drive types:
type sec surf cyl tpg gpc RCT LBNs
RX50 10 1 80 5 16 - 800
RX33 15 2 80 2 1 - 2400
RD51 18 4 306 4 1 36*4 21600
RD31 17 4 615 4 1 3*8 41560
RD52 17 8 512 8 1 4*8 60480
RD53 17 7 1024 7 1 5*8 138672
RD54 17 15 1225 15 1 7*8 311200
The simulator also supports larger drives that only existed
on SDI controllers. XBN, DBN, RCTS and RCTC are not known
for the SDI drives and are not used by the simulator:
RA82 57 15 1435 15 1 ?*8 1216665
RA72 51 20 1921? 20 1 ?*8 1953300
RA90 69 13 2656 13 1 ?*8 2376153
RA92 73 13 3101 13 1 ?*8 2940951
Each drive can be a different type. The drive field in the
unit flags specified the drive type and thus, indirectly,
the drive size.
*/
#define RQDF_RMV 01 /* removable */
#define RQDF_RO 02 /* read only */
#define RQDF_SDI 04 /* SDI drive */
#define RX50_DTYPE 0
#define RX50_SECT 10
#define RX50_SURF 1
#define RX50_CYL 80
#define RX50_TPG 5
#define RX50_GPC 16
#define RX50_XBN 0
#define RX50_DBN 0
#define RX50_LBN 800
#define RX50_RCTS 0
#define RX50_RCTC 0
#define RX50_RBN 0
#define RX50_MOD 7
#define RX50_MED 0x25658032
#define RX50_FLGS RQDF_RMV
#define RX33_DTYPE 1
#define RX33_SECT 15
#define RX33_SURF 2
#define RX33_CYL 80
#define RX33_TPG 2
#define RX33_GPC 1
#define RX33_XBN 0
#define RX33_DBN 0
#define RX33_LBN 2400
#define RX33_RCTS 0
#define RX33_RCTC 0
#define RX33_RBN 0
#define RX33_MOD 10
#define RX33_MED 0x25658021
#define RX33_FLGS RQDF_RMV
#define RD51_DTYPE 2
#define RD51_SECT 18
#define RD51_SURF 4
#define RD51_CYL 306
#define RD51_TPG 4
#define RD51_GPC 1
#define RD51_XBN 57
#define RD51_DBN 87
#define RD51_LBN 21600
#define RD51_RCTS 36
#define RD51_RCTC 4
#define RD51_RBN 144
#define RD51_MOD 6
#define RD51_MED 0x25644033
#define RD51_FLGS 0
#define RD31_DTYPE 3
#define RD31_SECT 17
#define RD31_SURF 4
#define RD31_CYL 615 /* last unused */
#define RD31_TPG RD31_SURF
#define RD31_GPC 1
#define RD31_XBN 54
#define RD31_DBN 14
#define RD31_LBN 41560
#define RD31_RCTS 3
#define RD31_RCTC 8
#define RD31_RBN 100
#define RD31_MOD 12
#define RD31_MED 0x2564401F
#define RD31_FLGS 0
#define RD52_DTYPE 4 /* Quantum params */
#define RD52_SECT 17
#define RD52_SURF 8
#define RD52_CYL 512
#define RD52_TPG RD52_SURF
#define RD52_GPC 1
#define RD52_XBN 54
#define RD52_DBN 82
#define RD52_LBN 60480
#define RD52_RCTS 4
#define RD52_RCTC 8
#define RD52_RBN 168
#define RD52_MOD 8
#define RD52_MED 0x25644034
#define RD52_FLGS 0
#define RD53_DTYPE 5
#define RD53_SECT 17
#define RD53_SURF 8
#define RD53_CYL 1024 /* last unused */
#define RD53_TPG RD53_SURF
#define RD53_GPC 1
#define RD53_XBN 54
#define RD53_DBN 82
#define RD53_LBN 138672
#define RD53_RCTS 5
#define RD53_RCTC 8
#define RD53_RBN 280
#define RD53_MOD 9
#define RD53_MED 0x25644035
#define RD53_FLGS 0
#define RD54_DTYPE 6
#define RD54_SECT 17
#define RD54_SURF 15
#define RD54_CYL 1225 /* last unused */
#define RD54_TPG RD54_SURF
#define RD54_GPC 1
#define RD54_XBN 54
#define RD54_DBN 201
#define RD54_LBN 311200
#define RD54_RCTS 7
#define RD54_RCTC 8
#define RD54_RBN 609
#define RD54_MOD 13
#define RD54_MED 0x25644036
#define RD54_FLGS 0
#define RA82_DTYPE 7 /* SDI drive */
#define RA82_SECT 57 /* +1 spare/track */
#define RA82_SURF 15
#define RA82_CYL 1435 /* 0-1422 user */
#define RA82_TPG RA82_SURF
#define RA82_GPC 1
#define RA82_XBN 3420 /* cyl 1427-1430 */
#define RA82_DBN 3420 /* cyl 1431-1434 */
#define RA82_LBN 1216665 /* 57*15*1423 */
#define RA82_RCTS 400 /* cyl 1423-1426 */
#define RA82_RCTC 8
#define RA82_RBN 21345 /* 1 *15*1423 */
#define RA82_MOD 11
#define RA82_MED 0x25641052
#define RA82_FLGS RQDF_SDI
#define RRD40_DTYPE 8
#define RRD40_SECT 128
#define RRD40_SURF 1
#define RRD40_CYL 10400
#define RRD40_TPG RRD40_SURF
#define RRD40_GPC 1
#define RRD40_XBN 0
#define RRD40_DBN 0
#define RRD40_LBN 1331200
#define RRD40_RCTS 0
#define RRD40_RCTC 0
#define RRD40_RBN 0
#define RRD40_MOD 26
#define RRD40_MED 0x25652228
#define RRD40_FLGS (RQDF_RMV | RQDF_RO)
#define RA72_DTYPE 9 /* SDI drive */
#define RA72_SECT 51 /* +1 spare/trk */
#define RA72_SURF 20
#define RA72_CYL 1921 /* 0-1914 user */
#define RA72_TPG RA72_SURF
#define RA72_GPC 1
#define RA72_XBN 2040 /* cyl 1917-1918? */
#define RA72_DBN 2040 /* cyl 1920-1921? */
#define RA72_LBN 1953300 /* 51*20*1915 */
#define RA72_RCTS 400 /* cyl 1915-1916? */
#define RA72_RCTC 5 /* ? */
#define RA72_RBN 38300 /* 1 *20*1915 */
#define RA72_MOD 37
#define RA72_MED 0x25641048
#define RA72_FLGS RQDF_SDI
#define RA90_DTYPE 10 /* SDI drive */
#define RA90_SECT 69 /* +1 spare/trk */
#define RA90_SURF 13
#define RA90_CYL 2656 /* 0-2648 user */
#define RA90_TPG RA90_SURF
#define RA90_GPC 1
#define RA90_XBN 1794 /* cyl 2651-2652? */
#define RA90_DBN 1794 /* cyl 2653-2654? */
#define RA90_LBN 2376153 /* 69*13*2649 */
#define RA90_RCTS 400 /* cyl 2649-2650? */
#define RA90_RCTC 6 /* ? */
#define RA90_RBN 34437 /* 1 *13*2649 */
#define RA90_MOD 19
#define RA90_MED 0x2564105A
#define RA90_FLGS RQDF_SDI
#define RA92_DTYPE 11 /* SDI drive */
#define RA92_SECT 73 /* +1 spare/trk */
#define RA92_SURF 13
#define RA92_CYL 3101 /* 0-3098 user */
#define RA92_TPG RA92_SURF
#define RA92_GPC 1
#define RA92_XBN 174 /* cyl 3100? */
#define RA92_DBN 775
#define RA92_LBN 2940951 /* 73*13*3099 */
#define RA92_RCTS 316 /* cyl 3099? */
#define RA92_RCTC 3 /* ? */
#define RA92_RBN 40287 /* 1 *13*3099 */
#define RA92_MOD 29
#define RA92_MED 0x2564105C
#define RA92_FLGS RQDF_SDI
#define RA8U_DTYPE 12 /* user defined */
#define RA8U_SECT 57 /* +1 spare/track */
#define RA8U_SURF 15
#define RA8U_CYL 1435 /* 0-1422 user */
#define RA8U_TPG RA8U_SURF
#define RA8U_GPC 1
#define RA8U_XBN 3420 /* cyl 1427-1430 */
#define RA8U_DBN 3420 /* cyl 1431-1434 */
#define RA8U_LBN 1216665 /* 57*15*1423 */
#define RA8U_RCTS 400 /* cyl 1423-1426 */
#define RA8U_RCTC 8
#define RA8U_RBN 21345 /* 1 *15*1423 */
#define RA8U_MOD 11 /* RA82 */
#define RA8U_MED 0x25641052 /* RA82 */
#define RA8U_FLGS RQDF_SDI
#define RA8U_MINC 5 /* min cap MB */
#define RA8U_MAXC 2000 /* max cap MB */
#define RA8U_EMAXC 1000000 /* ext max cap */
struct drvtyp {
int32 sect; /* sectors */
int32 surf; /* surfaces */
int32 cyl; /* cylinders */
int32 tpg; /* trk/grp */
int32 gpc; /* grp/cyl */
int32 xbn; /* XBN size */
int32 dbn; /* DBN size */
uint32 lbn; /* LBN size */
int32 rcts; /* RCT size */
int32 rctc; /* RCT copies */
int32 rbn; /* RBNs */
int32 mod; /* MSCP model */
int32 med; /* MSCP media */
int32 flgs; /* flags */
char *name; /* name */
};
#define RQ_DRV(d) \
d##_SECT, d##_SURF, d##_CYL, d##_TPG, \
d##_GPC, d##_XBN, d##_DBN, d##_LBN, \
d##_RCTS, d##_RCTC, d##_RBN, d##_MOD, \
d##_MED, d##_FLGS
#define RQ_SIZE(d) (d##_LBN * RQ_NUMBY)
static struct drvtyp drv_tab[] = {
{ RQ_DRV (RX50), "RX50" }, { RQ_DRV (RX33), "RX33" },
{ RQ_DRV (RD51), "RD51" }, { RQ_DRV (RD31), "RD31" },
{ RQ_DRV (RD52), "RD52" }, { RQ_DRV (RD53), "RD53" },
{ RQ_DRV (RD54), "RD54" }, { RQ_DRV (RA82), "RA82" },
{ RQ_DRV (RRD40), "RRD40" }, { RQ_DRV (RA72), "RA72" },
{ RQ_DRV (RA90), "RA90" }, { RQ_DRV (RA92), "RA92" },
{ RQ_DRV (RA8U), "RAUSER" }, { 0 } };
extern int32 int_req[IPL_HLVL];
extern int32 tmr_poll, clk_tps;
extern int32 cpu_log;
extern UNIT cpu_unit;
extern FILE *sim_log;
extern uint32 sim_taddr_64;
uint16 *rqxb = NULL; /* xfer buffer */
int32 rq_itime = 200; /* init time, except */
int32 rq_itime4 = 10; /* stage 4 */
int32 rq_qtime = 200; /* queue time */
int32 rq_xtime = 500; /* transfer time */
struct mscp_con {
uint32 cnum; /* ctrl number */
uint32 ubase; /* unit base */
uint32 sa; /* status, addr */
uint32 saw; /* written data */
uint32 s1dat; /* S1 data */
uint32 comm; /* comm region */
uint32 csta; /* ctrl state */
uint32 perr; /* last error */
uint32 cflgs; /* ctrl flags */
uint32 irq; /* intr request */
uint32 prgi; /* purge int */
uint32 pip; /* poll in progress */
int32 freq; /* free list */
int32 rspq; /* resp list */
uint32 pbsy; /* #busy pkts */
uint32 credits; /* credits */
uint32 hat; /* host timer */
uint32 htmo; /* host timeout */
struct uq_ring cq; /* cmd ring */
struct uq_ring rq; /* rsp ring */
struct rqpkt pak[RQ_NPKTS]; /* packet queue */
};
#define MSC struct mscp_con /* MSCP ctrl context */
DEVICE rq_dev, rqb_dev, rqc_dev,rqd_dev;
t_stat rq_rd (int32 *data, int32 PA, int32 access);
t_stat rq_wr (int32 data, int32 PA, int32 access);
t_stat rq_svc (UNIT *uptr);
t_stat rq_tmrsvc (UNIT *uptr);
t_stat rq_quesvc (UNIT *uptr);
t_stat rq_reset (DEVICE *dptr);
t_stat rq_attach (UNIT *uptr, char *cptr);
t_stat rq_detach (UNIT *uptr);
t_stat rq_boot (int32 unitno, DEVICE *dptr);
t_stat rq_set_wlk (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat rq_set_type (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat rq_show_type (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat rq_show_wlk (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat rq_show_ctrl (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat rq_show_unitq (FILE *st, UNIT *uptr, int32 val, void *desc);
t_bool rq_step4 (MSC *cp);
t_bool rq_mscp (MSC *cp, int32 pkt, t_bool q);
t_bool rq_abo (MSC *cp, int32 pkt, t_bool q);
t_bool rq_avl (MSC *cp, int32 pkt, t_bool q);
t_bool rq_fmt (MSC *cp, int32 pkt, t_bool q);
t_bool rq_gcs (MSC *cp, int32 pkt, t_bool q);
t_bool rq_gus (MSC *cp, int32 pkt, t_bool q);
t_bool rq_onl (MSC *cp, int32 pkt, t_bool q);
t_bool rq_rw (MSC *cp, int32 pkt, t_bool q);
t_bool rq_scc (MSC *cp, int32 pkt, t_bool q);
t_bool rq_suc (MSC *cp, int32 pkt, t_bool q);
t_bool rq_plf (MSC *cp, uint32 err);
t_bool rq_dte (MSC *cp, UNIT *uptr, uint32 err);
t_bool rq_hbe (MSC *cp, UNIT *uptr);
t_bool rq_una (MSC *cp, int32 un);
t_bool rq_deqf (MSC *cp, int32 *pkt);
int32 rq_deqh (MSC *cp, int32 *lh);
void rq_enqh (MSC *cp, int32 *lh, int32 pkt);
void rq_enqt (MSC *cp, int32 *lh, int32 pkt);
t_bool rq_getpkt (MSC *cp, int32 *pkt);
t_bool rq_putpkt (MSC *cp, int32 pkt, t_bool qt);
t_bool rq_getdesc (MSC *cp, struct uq_ring *ring, uint32 *desc);
t_bool rq_putdesc (MSC *cp, struct uq_ring *ring, uint32 desc);
int32 rq_rw_valid (MSC *cp, int32 pkt, UNIT *uptr, uint32 cmd);
t_bool rq_rw_end (MSC *cp, UNIT *uptr, uint32 flg, uint32 sts);
void rq_putr (MSC *cp, int32 pkt, uint32 cmd, uint32 flg,
uint32 sts, uint32 lnt, uint32 typ);
void rq_putr_unit (MSC *cp, int32 pkt, UNIT *uptr, uint32 lu, t_bool all);
void rq_setf_unit (MSC *cp, int32 pkt, UNIT *uptr);
void rq_init_int (MSC *cp);
void rq_ring_int (MSC *cp, struct uq_ring *ring);
t_bool rq_fatal (MSC *cp, uint32 err);
UNIT *rq_getucb (MSC *cp, uint32 lu);
int32 rq_map_pa (uint32 pa);
void rq_setint (MSC *cp);
void rq_clrint (MSC *cp);
int32 rq_inta (void);
/* RQ data structures
rq_dev RQ device descriptor
rq_unit RQ unit list
rq_reg RQ register list
rq_mod RQ modifier list
*/
MSC rq_ctx = { 0 };
DIB rq_dib = { IOBA_RQ, IOLN_RQ, &rq_rd, &rq_wr,
1, IVCL (RQ), 0, { &rq_inta } };
UNIT rq_unit[] = {
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RX50_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RX50)) },
{ UDATA (&rq_tmrsvc, UNIT_DIS, 0) },
{ UDATA (&rq_quesvc, UNIT_DIS, 0) } };
REG rq_reg[] = {
{ GRDATA (SA, rq_ctx.sa, DEV_RDX, 16, 0) },
{ GRDATA (SAW, rq_ctx.saw, DEV_RDX, 16, 0) },
{ GRDATA (S1DAT, rq_ctx.s1dat, DEV_RDX, 16, 0) },
{ GRDATA (COMM, rq_ctx.comm, DEV_RDX, 22, 0) },
{ GRDATA (CQBA, rq_ctx.cq.ba, DEV_RDX, 22, 0) },
{ GRDATA (CQLNT, rq_ctx.cq.lnt, DEV_RDX, 8, 2), REG_NZ },
{ GRDATA (CQIDX, rq_ctx.cq.idx, DEV_RDX, 8, 2) },
{ GRDATA (RQBA, rq_ctx.rq.ba, DEV_RDX, 22, 0) },
{ GRDATA (RQLNT, rq_ctx.rq.lnt, DEV_RDX, 8, 2), REG_NZ },
{ GRDATA (RQIDX, rq_ctx.rq.idx, DEV_RDX, 8, 2) },
{ DRDATA (FREE, rq_ctx.freq, 5) },
{ DRDATA (RESP, rq_ctx.rspq, 5) },
{ DRDATA (PBSY, rq_ctx.pbsy, 5) },
{ GRDATA (CFLGS, rq_ctx.cflgs, DEV_RDX, 16, 0) },
{ GRDATA (CSTA, rq_ctx.csta, DEV_RDX, 4, 0) },
{ GRDATA (PERR, rq_ctx.perr, DEV_RDX, 9, 0) },
{ DRDATA (CRED, rq_ctx.credits, 5) },
{ DRDATA (HAT, rq_ctx.hat, 17) },
{ DRDATA (HTMO, rq_ctx.htmo, 17) },
{ FLDATA (PRGI, rq_ctx.prgi, 0), REG_HIDDEN },
{ FLDATA (PIP, rq_ctx.pip, 0), REG_HIDDEN },
{ FLDATA (INT, rq_ctx.irq, 0) },
{ DRDATA (ITIME, rq_itime, 24), PV_LEFT + REG_NZ },
{ DRDATA (I4TIME, rq_itime4, 24), PV_LEFT + REG_NZ },
{ DRDATA (QTIME, rq_qtime, 24), PV_LEFT + REG_NZ },
{ DRDATA (XTIME, rq_xtime, 24), PV_LEFT + REG_NZ },
{ BRDATA (PKTS, rq_ctx.pak, DEV_RDX, 16, RQ_NPKTS * (RQ_PKT_SIZE_W + 1)) },
{ URDATA (CPKT, rq_unit[0].cpkt, 10, 5, 0, RQ_NUMDR, 0) },
{ URDATA (PKTQ, rq_unit[0].pktq, 10, 5, 0, RQ_NUMDR, 0) },
{ URDATA (UFLG, rq_unit[0].uf, DEV_RDX, 16, 0, RQ_NUMDR, 0) },
{ URDATA (CAPAC, rq_unit[0].capac, 10, T_ADDR_W, 0, RQ_NUMDR, PV_LEFT | REG_HRO) },
{ GRDATA (DEVADDR, rq_dib.ba, DEV_RDX, 32, 0), REG_HRO },
{ GRDATA (DEVVEC, rq_dib.vec, DEV_RDX, 16, 0), REG_HRO },
{ DRDATA (DEVLBN, drv_tab[RA8U_DTYPE].lbn, 22), REG_HRO },
{ NULL } };
MTAB rq_mod[] = {
{ UNIT_WLK, 0, NULL, "WRITEENABLED", &rq_set_wlk },
{ UNIT_WLK, UNIT_WLK, NULL, "LOCKED", &rq_set_wlk },
{ MTAB_XTD | MTAB_VDV | MTAB_NMO, RQ_SH_RI, "RINGS", NULL,
NULL, &rq_show_ctrl, 0 },
{ MTAB_XTD | MTAB_VDV | MTAB_NMO, RQ_SH_FR, "FREEQ", NULL,
NULL, &rq_show_ctrl, 0 },
{ MTAB_XTD | MTAB_VDV | MTAB_NMO, RQ_SH_RS, "RESPQ", NULL,
NULL, &rq_show_ctrl, 0 },
{ MTAB_XTD | MTAB_VDV | MTAB_NMO, RQ_SH_UN, "UNITQ", NULL,
NULL, &rq_show_ctrl, 0 },
{ MTAB_XTD | MTAB_VDV | MTAB_NMO, -1, "ALL", NULL,
NULL, &rq_show_ctrl, 0 },
{ MTAB_XTD | MTAB_VUN | MTAB_NMO, 0, "UNITQ", NULL,
NULL, &rq_show_unitq, 0 },
{ MTAB_XTD | MTAB_VUN, 0, "WRITE", NULL,
NULL, &rq_show_wlk, NULL },
{ MTAB_XTD | MTAB_VUN, RX50_DTYPE, NULL, "RX50",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RX33_DTYPE, NULL, "RX33",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RD31_DTYPE, NULL, "RD31",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RD51_DTYPE, NULL, "RD51",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RD52_DTYPE, NULL, "RD52",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RD53_DTYPE, NULL, "RD53",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RD54_DTYPE, NULL, "RD54",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RA82_DTYPE, NULL, "RA82",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RRD40_DTYPE, NULL, "RRD40",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RRD40_DTYPE, NULL, "CDROM",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RA72_DTYPE, NULL, "RA72",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RA90_DTYPE, NULL, "RA90",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RA92_DTYPE, NULL, "RA92",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, RA8U_DTYPE, NULL, "RAUSER",
&rq_set_type, NULL, NULL },
{ MTAB_XTD | MTAB_VUN, 0, "TYPE", NULL,
NULL, &rq_show_type, NULL },
#if defined (VM_PDP11)
{ MTAB_XTD|MTAB_VDV, 004, "ADDRESS", "ADDRESS",
&set_addr, &show_addr, NULL },
#else
{ MTAB_XTD|MTAB_VDV, 004, "ADDRESS", NULL,
NULL, &show_addr, NULL },
#endif
{ MTAB_XTD|MTAB_VDV, 0, "VECTOR", NULL,
NULL, &show_vec, NULL },
{ MTAB_XTD | MTAB_VDV, 0, NULL, "AUTOCONFIGURE",
&set_addr_flt, NULL, NULL },
{ 0 } };
DEVICE rq_dev = {
"RQ", rq_unit, rq_reg, rq_mod,
RQ_NUMDR + 2, DEV_RDX, 31, RQ_AINC, DEV_RDX, RQ_WID,
NULL, NULL, &rq_reset,
&rq_boot, &rq_attach, &rq_detach,
&rq_dib, DEV_FLTA | DEV_DISABLE | DEV_UBUS | DEV_QBUS };
/* RQB data structures
rqb_dev RQB device descriptor
rqb_unit RQB unit list
rqb_reg RQB register list
rqb_mod RQB modifier list
*/
MSC rqb_ctx = { 1 };
DIB rqb_dib = { IOBA_RQB, IOLN_RQB, &rq_rd, &rq_wr,
1, IVCL (RQ), 0, { &rq_inta } };
UNIT rqb_unit[] = {
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_tmrsvc, UNIT_DIS, 0) },
{ UDATA (&rq_quesvc, UNIT_DIS, 0) } };
REG rqb_reg[] = {
{ GRDATA (SA, rqb_ctx.sa, DEV_RDX, 16, 0) },
{ GRDATA (SAW, rqb_ctx.saw, DEV_RDX, 16, 0) },
{ GRDATA (S1DAT, rqb_ctx.s1dat, DEV_RDX, 16, 0) },
{ GRDATA (COMM, rqb_ctx.comm, DEV_RDX, 22, 0) },
{ GRDATA (CQBA, rqb_ctx.cq.ba, DEV_RDX, 22, 0) },
{ GRDATA (CQLNT, rqb_ctx.cq.lnt, DEV_RDX, 8, 2), REG_NZ },
{ GRDATA (CQIDX, rqb_ctx.cq.idx, DEV_RDX, 8, 2) },
{ GRDATA (RQBA, rqb_ctx.rq.ba, DEV_RDX, 22, 0) },
{ GRDATA (RQLNT, rqb_ctx.rq.lnt, DEV_RDX, 8, 2), REG_NZ },
{ GRDATA (RQIDX, rqb_ctx.rq.idx, DEV_RDX, 8, 2) },
{ DRDATA (FREE, rqb_ctx.freq, 5) },
{ DRDATA (RESP, rqb_ctx.rspq, 5) },
{ DRDATA (PBSY, rqb_ctx.pbsy, 5) },
{ GRDATA (CFLGS, rqb_ctx.cflgs, DEV_RDX, 16, 0) },
{ GRDATA (CSTA, rqb_ctx.csta, DEV_RDX, 4, 0) },
{ GRDATA (PERR, rqb_ctx.perr, DEV_RDX, 9, 0) },
{ DRDATA (CRED, rqb_ctx.credits, 5) },
{ DRDATA (HAT, rqb_ctx.hat, 17) },
{ DRDATA (HTMO, rqb_ctx.htmo, 17) },
{ FLDATA (PRGI, rqb_ctx.prgi, 0), REG_HIDDEN },
{ FLDATA (PIP, rqb_ctx.pip, 0), REG_HIDDEN },
{ FLDATA (INT, rqb_ctx.irq, 0) },
{ BRDATA (PKTS, rqb_ctx.pak, DEV_RDX, 16, RQ_NPKTS * (RQ_PKT_SIZE_W + 1)) },
{ URDATA (CPKT, rqb_unit[0].cpkt, 10, 5, 0, RQ_NUMDR, 0) },
{ URDATA (PKTQ, rqb_unit[0].pktq, 10, 5, 0, RQ_NUMDR, 0) },
{ URDATA (UFLG, rqb_unit[0].uf, DEV_RDX, 16, 0, RQ_NUMDR, 0) },
{ URDATA (CAPAC, rqb_unit[0].capac, 10, 31, 0, RQ_NUMDR, PV_LEFT | REG_HRO) },
{ GRDATA (DEVADDR, rqb_dib.ba, DEV_RDX, 32, 0), REG_HRO },
{ GRDATA (DEVVEC, rqb_dib.vec, DEV_RDX, 16, 0), REG_HRO },
{ NULL } };
DEVICE rqb_dev = {
"RQB", rqb_unit, rqb_reg, rq_mod,
RQ_NUMDR + 2, DEV_RDX, 31, RQ_AINC, DEV_RDX, RQ_WID,
NULL, NULL, &rq_reset,
&rq_boot, &rq_attach, &rq_detach,
&rqb_dib, DEV_FLTA | DEV_DISABLE | DEV_DIS | DEV_UBUS | DEV_QBUS };
/* RQC data structures
rqc_dev RQC device descriptor
rqc_unit RQC unit list
rqc_reg RQC register list
rqc_mod RQC modifier list
*/
MSC rqc_ctx = { 2 };
DIB rqc_dib = { IOBA_RQC, IOLN_RQC, &rq_rd, &rq_wr,
1, IVCL (RQ), 0, { &rq_inta } };
UNIT rqc_unit[] = {
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_tmrsvc, UNIT_DIS, 0) },
{ UDATA (&rq_quesvc, UNIT_DIS, 0) } };
REG rqc_reg[] = {
{ GRDATA (SA, rqc_ctx.sa, DEV_RDX, 16, 0) },
{ GRDATA (SAW, rqc_ctx.saw, DEV_RDX, 16, 0) },
{ GRDATA (S1DAT, rqc_ctx.s1dat, DEV_RDX, 16, 0) },
{ GRDATA (COMM, rqc_ctx.comm, DEV_RDX, 22, 0) },
{ GRDATA (CQBA, rqc_ctx.cq.ba, DEV_RDX, 22, 0) },
{ GRDATA (CQLNT, rqc_ctx.cq.lnt, DEV_RDX, 8, 2), REG_NZ },
{ GRDATA (CQIDX, rqc_ctx.cq.idx, DEV_RDX, 8, 2) },
{ GRDATA (RQBA, rqc_ctx.rq.ba, DEV_RDX, 22, 0) },
{ GRDATA (RQLNT, rqc_ctx.rq.lnt, DEV_RDX, 8, 2), REG_NZ },
{ GRDATA (RQIDX, rqc_ctx.rq.idx, DEV_RDX, 8, 2) },
{ DRDATA (FREE, rqc_ctx.freq, 5) },
{ DRDATA (RESP, rqc_ctx.rspq, 5) },
{ DRDATA (PBSY, rqc_ctx.pbsy, 5) },
{ GRDATA (CFLGS, rqc_ctx.cflgs, DEV_RDX, 16, 0) },
{ GRDATA (CSTA, rqc_ctx.csta, DEV_RDX, 4, 0) },
{ GRDATA (PERR, rqc_ctx.perr, DEV_RDX, 9, 0) },
{ DRDATA (CRED, rqc_ctx.credits, 5) },
{ DRDATA (HAT, rqc_ctx.hat, 17) },
{ DRDATA (HTMO, rqc_ctx.htmo, 17) },
{ FLDATA (PRGI, rqc_ctx.prgi, 0), REG_HIDDEN },
{ FLDATA (PIP, rqc_ctx.pip, 0), REG_HIDDEN },
{ FLDATA (INT, rqc_ctx.irq, 0) },
{ BRDATA (PKTS, rqc_ctx.pak, DEV_RDX, 16, RQ_NPKTS * (RQ_PKT_SIZE_W + 1)) },
{ URDATA (CPKT, rqc_unit[0].cpkt, 10, 5, 0, RQ_NUMDR, 0) },
{ URDATA (PKTQ, rqc_unit[0].pktq, 10, 5, 0, RQ_NUMDR, 0) },
{ URDATA (UFLG, rqc_unit[0].uf, DEV_RDX, 16, 0, RQ_NUMDR, 0) },
{ URDATA (CAPAC, rqc_unit[0].capac, 10, 31, 0, RQ_NUMDR, PV_LEFT | REG_HRO) },
{ GRDATA (DEVADDR, rqc_dib.ba, DEV_RDX, 32, 0), REG_HRO },
{ GRDATA (DEVVEC, rqc_dib.vec, DEV_RDX, 16, 0), REG_HRO },
{ NULL } };
DEVICE rqc_dev = {
"RQC", rqc_unit, rqc_reg, rq_mod,
RQ_NUMDR + 2, DEV_RDX, 31, RQ_AINC, DEV_RDX, RQ_WID,
NULL, NULL, &rq_reset,
&rq_boot, &rq_attach, &rq_detach,
&rqc_dib, DEV_FLTA | DEV_DISABLE | DEV_DIS | DEV_UBUS | DEV_QBUS };
/* RQD data structures
rqd_dev RQ device descriptor
rqd_unit RQ unit list
rqd_reg RQ register list
rqd_mod RQ modifier list
*/
MSC rqd_ctx = { 3 };
DIB rqd_dib = { IOBA_RQD, IOLN_RQD, &rq_rd, &rq_wr,
1, IVCL (RQ), 0, { &rq_inta } };
UNIT rqd_unit[] = {
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+UNIT_ROABLE+
(RD54_DTYPE << UNIT_V_DTYPE), RQ_SIZE (RD54)) },
{ UDATA (&rq_tmrsvc, UNIT_DIS, 0) },
{ UDATA (&rq_quesvc, UNIT_DIS, 0) } };
REG rqd_reg[] = {
{ GRDATA (SA, rqd_ctx.sa, DEV_RDX, 16, 0) },
{ GRDATA (SAW, rqd_ctx.saw, DEV_RDX, 16, 0) },
{ GRDATA (S1DAT, rqd_ctx.s1dat, DEV_RDX, 16, 0) },
{ GRDATA (COMM, rqd_ctx.comm, DEV_RDX, 22, 0) },
{ GRDATA (CQBA, rqd_ctx.cq.ba, DEV_RDX, 22, 0) },
{ GRDATA (CQLNT, rqd_ctx.cq.lnt, DEV_RDX, 8, 2), REG_NZ },
{ GRDATA (CQIDX, rqd_ctx.cq.idx, DEV_RDX, 8, 2) },
{ GRDATA (RQBA, rqd_ctx.rq.ba, DEV_RDX, 22, 0) },
{ GRDATA (RQLNT, rqd_ctx.rq.lnt, DEV_RDX, 8, 2), REG_NZ },
{ GRDATA (RQIDX, rqd_ctx.rq.idx, DEV_RDX, 8, 2) },
{ DRDATA (FREE, rqd_ctx.freq, 5) },
{ DRDATA (RESP, rqd_ctx.rspq, 5) },
{ DRDATA (PBSY, rqd_ctx.pbsy, 5) },
{ GRDATA (CFLGS, rqd_ctx.cflgs, DEV_RDX, 16, 0) },
{ GRDATA (CSTA, rqd_ctx.csta, DEV_RDX, 4, 0) },
{ GRDATA (PERR, rqd_ctx.perr, DEV_RDX, 9, 0) },
{ DRDATA (CRED, rqd_ctx.credits, 5) },
{ DRDATA (HAT, rqd_ctx.hat, 17) },
{ DRDATA (HTMO, rqd_ctx.htmo, 17) },
{ FLDATA (PRGI, rqd_ctx.prgi, 0), REG_HIDDEN },
{ FLDATA (PIP, rqd_ctx.pip, 0), REG_HIDDEN },
{ FLDATA (INT, rqd_ctx.irq, 0) },
{ BRDATA (PKTS, rqd_ctx.pak, DEV_RDX, 16, RQ_NPKTS * (RQ_PKT_SIZE_W + 1)) },
{ URDATA (CPKT, rqd_unit[0].cpkt, 10, 5, 0, RQ_NUMDR, 0) },
{ URDATA (PKTQ, rqd_unit[0].pktq, 10, 5, 0, RQ_NUMDR, 0) },
{ URDATA (UFLG, rqd_unit[0].uf, DEV_RDX, 16, 0, RQ_NUMDR, 0) },
{ URDATA (CAPAC, rqd_unit[0].capac, 10, 31, 0, RQ_NUMDR, PV_LEFT | REG_HRO) },
{ GRDATA (DEVADDR, rqd_dib.ba, DEV_RDX, 32, 0), REG_HRO },
{ GRDATA (DEVVEC, rqd_dib.vec, DEV_RDX, 16, 0), REG_HRO },
{ NULL } };
DEVICE rqd_dev = {
"RQD", rqd_unit, rqd_reg, rq_mod,
RQ_NUMDR + 2, DEV_RDX, 31, RQ_AINC, DEV_RDX, RQ_WID,
NULL, NULL, &rq_reset,
&rq_boot, &rq_attach, &rq_detach,
&rqd_dib, DEV_FLTA | DEV_DISABLE | DEV_DIS | DEV_UBUS | DEV_QBUS };
static DEVICE *rq_devmap[RQ_NUMCT] = {
&rq_dev, &rqb_dev, &rqc_dev, &rqd_dev };
static MSC *rq_ctxmap[RQ_NUMCT] = {
&rq_ctx, &rqb_ctx, &rqc_ctx, &rqd_ctx };
/* I/O dispatch routine, I/O addresses 17772150 - 17772152
base + 0 IP read/write
base + 2 SA read/write
*/
t_stat rq_rd (int32 *data, int32 PA, int32 access)
{
int32 cidx = rq_map_pa ((uint32) PA);
MSC *cp = rq_ctxmap[cidx];
DEVICE *dptr = rq_devmap[cidx];
if (cidx < 0) return SCPE_IERR;
switch ((PA >> 1) & 01) { /* decode PA<1> */
case 0: /* IP */
*data = 0; /* reads zero */
if (cp->csta == CST_S3_PPB) rq_step4 (cp); /* waiting for poll? */
else if (cp->csta == CST_UP) { /* if up */
cp->pip = 1; /* poll host */
sim_activate (dptr->units + RQ_QUEUE, rq_qtime); }
break;
case 1: /* SA */
*data = cp->sa;
break; }
return SCPE_OK;
}
t_stat rq_wr (int32 data, int32 PA, int32 access)
{
int32 cidx = rq_map_pa ((uint32) PA);
MSC *cp = rq_ctxmap[cidx];
DEVICE *dptr = rq_devmap[cidx];
if (cidx < 0) return SCPE_IERR;
switch ((PA >> 1) & 01) { /* decode PA<1> */
case 0: /* IP */
rq_reset (rq_devmap[cidx]); /* init device */
if (DBG_LOG (LOG_RQ)) fprintf (sim_log,
">>RQ%c: initialization started\n", 'A' + cp->cnum);
break;
case 1: /* SA */
cp->saw = data;
if (cp->csta < CST_S4) /* stages 1-3 */
sim_activate (dptr->units + RQ_QUEUE, rq_itime);
else if (cp->csta == CST_S4) /* stage 4 (fast) */
sim_activate (dptr->units + RQ_QUEUE, rq_itime4);
break; }
return SCPE_OK;
}
/* Map physical address to device context */
int32 rq_map_pa (uint32 pa)
{
int32 i;
DEVICE *dptr;
DIB *dibp;
for (i = 0; i < RQ_NUMCT; i++) { /* loop thru ctrls */
dptr = rq_devmap[i]; /* get device */
dibp = (DIB *) dptr->ctxt; /* get DIB */
if ((pa >= dibp->ba) && /* in range? */
(pa < (dibp->ba + dibp->lnt)))
return i; } /* return ctrl idx */
return -1;
}
/* Transition to step 4 - init communications region */
t_bool rq_step4 (MSC *cp)
{
int32 i, lnt;
uint32 base;
uint16 zero[SA_COMM_MAX >> 1];
cp->rq.ioff = SA_COMM_RI; /* set intr offset */
cp->rq.ba = cp->comm; /* set rsp q base */
cp->rq.lnt = SA_S1H_RQ (cp->s1dat) << 2; /* get resp q len */
cp->cq.ioff = SA_COMM_CI; /* set intr offset */
cp->cq.ba = cp->comm + cp->rq.lnt; /* set cmd q base */
cp->cq.lnt = SA_S1H_CQ (cp->s1dat) << 2; /* get cmd q len */
cp->cq.idx = cp->rq.idx = 0; /* clear q idx's */
if (cp->prgi) base = cp->comm + SA_COMM_QQ;
else base = cp->comm + SA_COMM_CI;
lnt = cp->comm + cp->cq.lnt + cp->rq.lnt - base; /* comm lnt */
if (lnt > SA_COMM_MAX) lnt = SA_COMM_MAX; /* paranoia */
for (i = 0; i < (lnt >> 1); i++) zero[i] = 0; /* clr buffer */
if (Map_WriteW (base, lnt, zero, MAP)) /* zero comm area */
return rq_fatal (cp, PE_QWE); /* error? */
cp->sa = SA_S4 | (RQ_UQPM << SA_S4C_V_MOD) | /* send step 4 */
(RQ_SVER << SA_S4C_V_VER);
cp->csta = CST_S4; /* set step 4 */
rq_init_int (cp); /* poke host */
return OK;
}
/* Queue service - invoked when any of the queues (host queue, unit
queues, response queue) require servicing. Also invoked during
initialization to provide some delay to the next step.
Process at most one item off each unit queue
If the unit queues were empty, process at most one item off the host queue
Process at most one item off the response queue
If all queues are idle, terminate thread
*/
t_stat rq_quesvc (UNIT *uptr)
{
int32 i, cnid;
int32 pkt = 0;
UNIT *nuptr;
MSC *cp = rq_ctxmap[uptr->cnum];
DEVICE *dptr = rq_devmap[uptr->cnum];
DIB *dibp = (DIB *) dptr->ctxt;
if (cp->csta < CST_UP) { /* still init? */
switch (cp->csta) { /* controller state? */
case CST_S1: /* need S1 reply */
if (cp->saw & SA_S1H_VL) { /* valid? */
if (cp->saw & SA_S1H_WR) { /* wrap? */
cp->sa = cp->saw; /* echo data */
cp->csta = CST_S1_WR; } /* endless loop */
else {
cp->s1dat = cp->saw; /* save data */
dibp->vec = (cp->s1dat & SA_S1H_VEC) << 2; /* get vector */
if (dibp->vec) dibp->vec = dibp->vec + VEC_Q; /* if nz, bias */
cp->sa = SA_S2 | SA_S2C_PT | SA_S2C_EC (cp->s1dat);
cp->csta = CST_S2; /* now in step 2 */
rq_init_int (cp); } /* intr if req */
} /* end if valid */
break;
case CST_S1_WR: /* wrap mode */
cp->sa = cp->saw; /* echo data */
break;
case CST_S2: /* need S2 reply */
cp->comm = cp->saw & SA_S2H_CLO; /* get low addr */
cp->prgi = cp->saw & SA_S2H_PI; /* get purge int */
cp->sa = SA_S3 | SA_S3C_EC (cp->s1dat);
cp->csta = CST_S3; /* now in step 3 */
rq_init_int (cp); /* intr if req */
break;
case CST_S3: /* need S3 reply */
cp->comm = ((cp->saw & SA_S3H_CHI) << 16) | cp->comm;
if (cp->saw & SA_S3H_PP) { /* purge/poll test? */
cp->sa = 0; /* put 0 */
cp->csta = CST_S3_PPA; } /* wait for 0 write */
else rq_step4 (cp); /* send step 4 */
break;
case CST_S3_PPA: /* need purge test */
if (cp->saw) rq_fatal (cp, PE_PPF); /* data not zero? */
else cp->csta = CST_S3_PPB; /* wait for poll */
break;
case CST_S4: /* need S4 reply */
if (cp->saw & SA_S4H_GO) { /* go set? */
if (DBG_LOG (LOG_RQ)) fprintf (sim_log,
">>RQ%c: initialization complete\n", 'A' + cp->cnum);
cp->csta = CST_UP; /* we're up */
cp->sa = 0; /* clear SA */
sim_activate (dptr->units + RQ_TIMER, tmr_poll * clk_tps);
if ((cp->saw & SA_S4H_LF) && cp->perr) rq_plf (cp, cp->perr);
cp->perr = 0; }
break; } /* end switch */
return SCPE_OK; } /* end if */
for (i = 0; i < RQ_NUMDR; i++) { /* chk unit q's */
nuptr = dptr->units + i; /* ptr to unit */
if (nuptr->cpkt || (nuptr->pktq == 0)) continue;
pkt = rq_deqh (cp, &nuptr->pktq); /* get top of q */
if (!rq_mscp (cp, pkt, FALSE)) return SCPE_OK; } /* process */
if ((pkt == 0) && cp->pip) { /* polling? */
if (!rq_getpkt (cp, &pkt)) return SCPE_OK; /* get host pkt */
if (pkt) { /* got one? */
if (DBG_LOG (LOG_RQ)) {
fprintf (sim_log, ">>RQ%c: cmd=%04X, mod=%04X, unit=%d, ",
'A' + cp->cnum, cp->pak[pkt].d[CMD_OPC],
cp->pak[pkt].d[CMD_MOD], cp->pak[pkt].d[CMD_UN]);
fprintf (sim_log, "bc=%04X%04X, ma=%04X%04X, lbn=%04X%04X\n",
cp->pak[pkt].d[RW_BCH], cp->pak[pkt].d[RW_BCL],
cp->pak[pkt].d[RW_BAH], cp->pak[pkt].d[RW_BAL],
cp->pak[pkt].d[RW_LBNH], cp->pak[pkt].d[RW_LBNL]); }
if (GETP (pkt, UQ_HCTC, TYP) != UQ_TYP_SEQ) /* seq packet? */
return rq_fatal (cp, PE_PIE); /* no, term thread */
cnid = GETP (pkt, UQ_HCTC, CID); /* get conn ID */
if (cnid == UQ_CID_MSCP) { /* MSCP packet? */
if (!rq_mscp (cp, pkt, TRUE)) return SCPE_OK; } /* proc, q non-seq */
else if (cnid == UQ_CID_DUP) { /* DUP packet? */
rq_putr (cp, pkt, OP_END, 0, ST_CMD | I_OPCD, RSP_LNT, UQ_TYP_SEQ);
if (!rq_putpkt (cp, pkt, TRUE)) return SCPE_OK; } /* ill cmd */
else return rq_fatal (cp, PE_ICI); /* no, term thread */
} /* end if pkt */
else cp->pip = 0; /* discontinue poll */
} /* end if pip */
if (cp->rspq) { /* resp q? */
pkt = rq_deqh (cp, &cp->rspq); /* get top of q */
if (!rq_putpkt (cp, pkt, FALSE)) return SCPE_OK; /* send to hst */
} /* end if resp q */
if (pkt) sim_activate (uptr, rq_qtime); /* more to do? */
return SCPE_OK; /* done */
}
/* Clock service (roughly once per second) */
t_stat rq_tmrsvc (UNIT *uptr)
{
int32 i;
UNIT *nuptr;
MSC *cp = rq_ctxmap[uptr->cnum];
DEVICE *dptr = rq_devmap[uptr->cnum];
sim_activate (uptr, tmr_poll * clk_tps); /* reactivate */
for (i = 0; i < RQ_NUMDR; i++) { /* poll */
nuptr = dptr->units + i;
if ((nuptr->flags & UNIT_ATP) && /* ATN pending? */
(nuptr->flags & UNIT_ATT) && /* still online? */
(cp->cflgs & CF_ATN)) { /* wanted? */
if (!rq_una (cp, i)) return SCPE_OK; }
nuptr->flags = nuptr->flags & ~UNIT_ATP; }
if ((cp->hat > 0) && (--cp->hat == 0)) /* host timeout? */
rq_fatal (cp, PE_HAT); /* fatal err */
return SCPE_OK;
}
/* MSCP packet handling */
t_bool rq_mscp (MSC *cp, int32 pkt, t_bool q)
{
uint32 sts, cmd = GETP (pkt, CMD_OPC, OPC);
switch (cmd) {
case OP_ABO: /* abort */
return rq_abo (cp, pkt, q);
case OP_AVL: /* avail */
return rq_avl (cp, pkt, q);
case OP_FMT: /* format */
return rq_fmt (cp, pkt, q);
case OP_GCS: /* get cmd status */
return rq_gcs (cp, pkt, q);
case OP_GUS: /* get unit status */
return rq_gus (cp, pkt, q);
case OP_ONL: /* online */
return rq_onl (cp, pkt, q);
case OP_SCC: /* set ctrl char */
return rq_scc (cp, pkt, q);
case OP_SUC: /* set unit char */
return rq_suc (cp, pkt, q);
case OP_ACC: /* access */
case OP_CMP: /* compare */
case OP_ERS: /* erase */
case OP_RD: /* read */
case OP_WR: /* write */
return rq_rw (cp, pkt, q);
case OP_CCD: /* nops */
case OP_DAP:
case OP_FLU:
cmd = cmd | OP_END; /* set end flag */
sts = ST_SUC; /* success */
break;
default:
cmd = OP_END; /* set end op */
sts = ST_CMD | I_OPCD; /* ill op */
break; }
rq_putr (cp, pkt, cmd, 0, sts, RSP_LNT, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Abort a command - 1st parameter is ref # of cmd to abort */
t_bool rq_abo (MSC *cp, int32 pkt, t_bool q)
{
uint32 lu = cp->pak[pkt].d[CMD_UN]; /* unit # */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* opcode */
uint32 ref = GETP32 (pkt, ABO_REFL); /* cmd ref # */
int32 tpkt, prv;
UNIT *uptr;
DEVICE *dptr = rq_devmap[cp->cnum];
tpkt = 0; /* set no mtch */
if (uptr = rq_getucb (cp, lu)) { /* get unit */
if (uptr->cpkt && /* curr pkt? */
(GETP32 (uptr->cpkt, CMD_REFL) == ref)) { /* match ref? */
tpkt = uptr->cpkt; /* save match */
uptr->cpkt = 0; /* gonzo */
sim_cancel (uptr); /* cancel unit */
sim_activate (dptr->units + RQ_QUEUE, rq_qtime); }
else if (uptr->pktq && /* head of q? */
(GETP32 (uptr->pktq, CMD_REFL) == ref)) { /* match ref? */
tpkt = uptr->pktq; /* save match */
uptr->pktq = cp->pak[tpkt].link; } /* unlink */
else if (prv = uptr->pktq) { /* srch pkt q */
while (tpkt = cp->pak[prv].link) { /* walk list */
if (GETP32 (tpkt, RSP_REFL) == ref) { /* match? unlink */
cp->pak[prv].link = cp->pak[tpkt].link;
break; } } }
if (tpkt) { /* found target? */
uint32 tcmd = GETP (tpkt, CMD_OPC, OPC); /* get opcode */
rq_putr (cp, tpkt, tcmd | OP_END, 0, ST_ABO, RSP_LNT, UQ_TYP_SEQ);
if (!rq_putpkt (cp, tpkt, TRUE)) return ERR; }
} /* end if unit */
rq_putr (cp, pkt, cmd | OP_END, 0, ST_SUC, ABO_LNT, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Unit available - set unit status to available - defer if q'd cmds */
t_bool rq_avl (MSC *cp, int32 pkt, t_bool q)
{
uint32 lu = cp->pak[pkt].d[CMD_UN]; /* unit # */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* opcode */
uint32 sts;
UNIT *uptr;
if (uptr = rq_getucb (cp, lu)) { /* unit exist? */
if (q && uptr->cpkt) { /* need to queue? */
rq_enqt (cp, &uptr->pktq, pkt); /* do later */
return OK; }
uptr->flags = uptr->flags & ~UNIT_ONL; /* not online */
uptr->uf = 0; /* clr flags */
sts = ST_SUC; } /* success */
else sts = ST_OFL; /* offline */
rq_putr (cp, pkt, cmd | OP_END, 0, sts, AVL_LNT, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Get command status - only interested in active xfr cmd */
t_bool rq_gcs (MSC *cp, int32 pkt, t_bool q)
{
uint32 lu = cp->pak[pkt].d[CMD_UN]; /* unit # */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* opcode */
uint32 ref = GETP32 (pkt, GCS_REFL); /* ref # */
int32 tpkt;
UNIT *uptr;
if ((uptr = rq_getucb (cp, lu)) && /* valid lu? */
(tpkt = uptr->cpkt) && /* queued pkt? */
(GETP32 (tpkt, CMD_REFL) == ref) && /* match ref? */
(GETP (tpkt, CMD_OPC, OPC) >= OP_ACC)) { /* rd/wr cmd? */
cp->pak[pkt].d[GCS_STSL] = cp->pak[tpkt].d[RW_WBCL];
cp->pak[pkt].d[GCS_STSH] = cp->pak[tpkt].d[RW_WBCH]; }
else {
cp->pak[pkt].d[GCS_STSL] = 0; /* return 0 */
cp->pak[pkt].d[GCS_STSH] = 0; }
rq_putr (cp, pkt, cmd | OP_END, 0, ST_SUC, GCS_LNT, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Get unit status */
t_bool rq_gus (MSC *cp, int32 pkt, t_bool q)
{
uint32 lu = cp->pak[pkt].d[CMD_UN]; /* unit # */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* opcode */
uint32 dtyp, sts, rbpar;
UNIT *uptr;
if (cp->pak[pkt].d[CMD_MOD] & MD_NXU) { /* next unit? */
if (lu >= (cp->ubase + RQ_NUMDR)) { /* end of range? */
lu = 0; /* reset to 0 */
cp->pak[pkt].d[RSP_UN] = lu; } }
if (uptr = rq_getucb (cp, lu)) { /* unit exist? */
if ((uptr->flags & UNIT_ATT) == 0) /* not attached? */
sts = ST_OFL | SB_OFL_NV; /* offl no vol */
else if (uptr->flags & UNIT_ONL) sts = ST_SUC; /* online */
else sts = ST_AVL; /* avail */
rq_putr_unit (cp, pkt, uptr, lu, FALSE); /* fill unit fields */
dtyp = GET_DTYPE (uptr->flags); /* get drive type */
if (drv_tab[dtyp].rcts) rbpar = 1; /* ctrl bad blk? */
else rbpar = 0; /* fill geom, bblk */
cp->pak[pkt].d[GUS_TRK] = drv_tab[dtyp].sect;
cp->pak[pkt].d[GUS_GRP] = drv_tab[dtyp].tpg;
cp->pak[pkt].d[GUS_CYL] = drv_tab[dtyp].gpc;
cp->pak[pkt].d[GUS_UVER] = 0;
cp->pak[pkt].d[GUS_RCTS] = drv_tab[dtyp].rcts;
cp->pak[pkt].d[GUS_RBSC] =
(rbpar << GUS_RB_V_RBNS) | (rbpar << GUS_RB_V_RCTC); }
else sts = ST_OFL; /* offline */
cp->pak[pkt].d[GUS_SHUN] = lu; /* shadowing */
cp->pak[pkt].d[GUS_SHST] = 0;
rq_putr (cp, pkt, cmd | OP_END, 0, sts, GUS_LNT_D, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Unit online - defer if q'd commands */
t_bool rq_onl (MSC *cp, int32 pkt, t_bool q)
{
uint32 lu = cp->pak[pkt].d[CMD_UN]; /* unit # */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* opcode */
uint32 sts;
UNIT *uptr;
if (uptr = rq_getucb (cp, lu)) { /* unit exist? */
if (q && uptr->cpkt) { /* need to queue? */
rq_enqt (cp, &uptr->pktq, pkt); /* do later */
return OK; }
if ((uptr->flags & UNIT_ATT) == 0) /* not attached? */
sts = ST_OFL | SB_OFL_NV; /* offl no vol */
else if (uptr->flags & UNIT_ONL) /* already online? */
sts = ST_SUC | SB_SUC_ON;
else { /* mark online */
sts = ST_SUC;
uptr->flags = uptr->flags | UNIT_ONL;
rq_setf_unit (cp, pkt, uptr); } /* hack flags */
rq_putr_unit (cp, pkt, uptr, lu, TRUE); } /* set fields */
else sts = ST_OFL; /* offline */
cp->pak[pkt].d[ONL_SHUN] = lu; /* shadowing */
cp->pak[pkt].d[ONL_SHST] = 0;
rq_putr (cp, pkt, cmd | OP_END, 0, sts, ONL_LNT, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Set controller characteristics */
t_bool rq_scc (MSC *cp, int32 pkt, t_bool q)
{
int32 sts, cmd;
if (cp->pak[pkt].d[SCC_MSV]) { /* MSCP ver = 0? */
sts = ST_CMD | I_VRSN; /* no, lose */
cmd = 0; }
else { sts = ST_SUC; /* success */
cmd = GETP (pkt, CMD_OPC, OPC); /* get opcode */
cp->cflgs = (cp->cflgs & CF_RPL) | /* hack ctrl flgs */
cp->pak[pkt].d[SCC_CFL];
if (cp->htmo = cp->pak[pkt].d[SCC_TMO]) /* set timeout */
cp->htmo = cp->htmo + 2; /* if nz, round up */
cp->pak[pkt].d[SCC_CFL] = cp->cflgs; /* return flags */
cp->pak[pkt].d[SCC_TMO] = RQ_DCTMO; /* ctrl timeout */
cp->pak[pkt].d[SCC_VER] = (RQ_HVER << SCC_VER_V_HVER) |
(RQ_SVER << SCC_VER_V_SVER);
cp->pak[pkt].d[SCC_CIDA] = 0; /* ctrl ID */
cp->pak[pkt].d[SCC_CIDB] = 0;
cp->pak[pkt].d[SCC_CIDC] = 0;
cp->pak[pkt].d[SCC_CIDD] = (RQ_CLASS << SCC_CIDD_V_CLS) |
(RQ_MODEL << SCC_CIDD_V_MOD);
cp->pak[pkt].d[SCC_MBCL] = 0; /* max bc */
cp->pak[pkt].d[SCC_MBCH] = 0; }
rq_putr (cp, pkt, cmd | OP_END, 0, sts, SCC_LNT, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Set unit characteristics - defer if q'd commands */
t_bool rq_suc (MSC *cp, int32 pkt, t_bool q)
{
uint32 lu = cp->pak[pkt].d[CMD_UN]; /* unit # */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* opcode */
uint32 sts;
UNIT *uptr;
if (uptr = rq_getucb (cp, lu)) { /* unit exist? */
if (q && uptr->cpkt) { /* need to queue? */
rq_enqt (cp, &uptr->pktq, pkt); /* do later */
return OK; }
if ((uptr->flags & UNIT_ATT) == 0) /* not attached? */
sts = ST_OFL | SB_OFL_NV; /* offl no vol */
else { /* avail or onl */
sts = ST_SUC;
rq_setf_unit (cp, pkt, uptr); } /* hack flags */
rq_putr_unit (cp, pkt, uptr, lu, TRUE); } /* set fields */
else sts = ST_OFL; /* offline */
cp->pak[pkt].d[ONL_SHUN] = lu; /* shadowing */
cp->pak[pkt].d[ONL_SHST] = 0;
rq_putr (cp, pkt, cmd | OP_END, 0, sts, SUC_LNT, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Format command - floppies only */
t_bool rq_fmt (MSC *cp, int32 pkt, t_bool q)
{
uint32 lu = cp->pak[pkt].d[CMD_UN]; /* unit # */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* opcode */
uint32 sts;
UNIT *uptr;
if (uptr = rq_getucb (cp, lu)) { /* unit exist? */
if (q && uptr->cpkt) { /* need to queue? */
rq_enqt (cp, &uptr->pktq, pkt); /* do later */
return OK; }
if (GET_DTYPE (uptr->flags) != RX33_DTYPE) /* RX33? */
sts = ST_CMD | I_OPCD; /* no, err */
else if ((cp->pak[pkt].d[FMT_IH] & 0100000) == 0) /* magic bit set? */
sts = ST_CMD | I_FMTI; /* no, err */
else if ((uptr->flags & UNIT_ATT) == 0) /* offline? */
sts = ST_OFL | SB_OFL_NV; /* no vol */
else if (uptr->flags & UNIT_ONL) { /* online? */
uptr->flags = uptr->flags & ~UNIT_ONL;
uptr->uf = 0; /* clear flags */
sts = ST_AVL | SB_AVL_INU; } /* avail, in use */
else if (RQ_WPH (uptr)) /* write prot? */
sts = ST_WPR | SB_WPR_HW; /* can't fmt */
else sts = ST_SUC; /*** for now ***/
}
else sts = ST_OFL; /* offline */
rq_putr (cp, pkt, cmd | OP_END, 0, sts, FMT_LNT, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Data transfer commands */
t_bool rq_rw (MSC *cp, int32 pkt, t_bool q)
{
uint32 lu = cp->pak[pkt].d[CMD_UN]; /* unit # */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* opcode */
uint32 sts;
UNIT *uptr;
if (uptr = rq_getucb (cp, lu)) { /* unit exist? */
if (q && uptr->cpkt) { /* need to queue? */
rq_enqt (cp, &uptr->pktq, pkt); /* do later */
return OK; }
sts = rq_rw_valid (cp, pkt, uptr, cmd); /* validity checks */
if (sts == 0) { /* ok? */
uptr->cpkt = pkt; /* op in progress */
cp->pak[pkt].d[RW_WBAL] = cp->pak[pkt].d[RW_BAL];
cp->pak[pkt].d[RW_WBAH] = cp->pak[pkt].d[RW_BAH];
cp->pak[pkt].d[RW_WBCL] = cp->pak[pkt].d[RW_BCL];
cp->pak[pkt].d[RW_WBCH] = cp->pak[pkt].d[RW_BCH];
cp->pak[pkt].d[RW_WBLL] = cp->pak[pkt].d[RW_LBNL];
cp->pak[pkt].d[RW_WBLH] = cp->pak[pkt].d[RW_LBNH];
sim_activate (uptr, rq_xtime); /* activate */
return OK; } } /* done */
else sts = ST_OFL; /* offline */
cp->pak[pkt].d[RW_BCL] = cp->pak[pkt].d[RW_BCH] = 0; /* bad packet */
rq_putr (cp, pkt, cmd | OP_END, 0, sts, RW_LNT_D, UQ_TYP_SEQ);
return rq_putpkt (cp, pkt, TRUE);
}
/* Validity checks */
int32 rq_rw_valid (MSC *cp, int32 pkt, UNIT *uptr, uint32 cmd)
{
uint32 dtyp = GET_DTYPE (uptr->flags); /* get drive type */
uint32 lbn = GETP32 (pkt, RW_LBNL); /* get lbn */
uint32 bc = GETP32 (pkt, RW_BCL); /* get byte cnt */
uint32 maxlbn = uptr->capac / RQ_NUMBY; /* get max lbn */
/* uint32 maxlbn = drv_tab[dtyp].lbn; /* get max lbn */
if ((uptr->flags & UNIT_ATT) == 0) /* not attached? */
return (ST_OFL | SB_OFL_NV); /* offl no vol */
if ((uptr->flags & UNIT_ONL) == 0) /* not online? */
return ST_AVL; /* only avail */
if ((cmd != OP_ACC) && (cmd != OP_ERS) && /* 'real' xfer */
(cp->pak[pkt].d[RW_BAL] & 1)) /* odd address? */
return (ST_HST | SB_HST_OA); /* host buf odd */
if (bc & 1) return (ST_HST | SB_HST_OC); /* odd byte cnt? */
if (bc & 0xF0000000) return (ST_CMD | I_BCNT); /* 'reasonable' bc? */
/* if (lbn & 0xF0000000) return (ST_CMD | I_LBN); /* 'reasonable' lbn? */
if (lbn >= maxlbn) { /* accessing RCT? */
if (lbn >= (maxlbn + drv_tab[dtyp].rcts)) /* beyond copy 1? */
return (ST_CMD | I_LBN); /* lbn err */
if (bc != RQ_NUMBY) return (ST_CMD | I_BCNT); }/* bc must be 512 */
else if ((lbn + ((bc + (RQ_NUMBY - 1)) / RQ_NUMBY)) > maxlbn)
return (ST_CMD | I_BCNT); /* spiral to RCT */
if ((cmd == OP_WR) || (cmd == OP_ERS)) { /* write op? */
if (lbn >= maxlbn) /* accessing RCT? */
return (ST_CMD | I_LBN); /* lbn err */
if (uptr->uf & UF_WPS) /* swre wlk? */
return (ST_WPR | SB_WPR_SW);
if (RQ_WPH (uptr)) /* hwre wlk? */
return (ST_WPR | SB_WPR_HW); }
return 0; /* success! */
}
/* Unit service for data transfer commands */
t_stat rq_svc (UNIT *uptr)
{
MSC *cp = rq_ctxmap[uptr->cnum];
uint32 i, t, err, tbc, abc, wwc;
int32 pkt = uptr->cpkt; /* get packet */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* get cmd */
uint32 ba = GETP32 (pkt, RW_WBAL); /* buf addr */
uint32 bc = GETP32 (pkt, RW_WBCL); /* byte count */
uint32 bl = GETP32 (pkt, RW_WBLL); /* block addr */
t_addr da = ((t_addr) bl) * RQ_NUMBY; /* disk addr */
if ((cp == NULL) || (pkt == 0)) return STOP_RQ; /* what??? */
tbc = (bc > RQ_MAXFR)? RQ_MAXFR: bc; /* trim cnt to max */
if ((uptr->flags & UNIT_ATT) == 0) { /* not attached? */
rq_rw_end (cp, uptr, 0, ST_OFL | SB_OFL_NV); /* offl no vol */
return SCPE_OK; }
if (bc == 0) { /* no xfer? */
rq_rw_end (cp, uptr, 0, ST_SUC); /* ok by me... */
return SCPE_OK; }
if ((cmd == OP_ERS) || (cmd == OP_WR)) { /* write op? */
if (RQ_WPH (uptr)) {
rq_rw_end (cp, uptr, 0, ST_WPR | SB_WPR_HW);
return SCPE_OK; }
if (uptr->uf & UF_WPS) {
rq_rw_end (cp, uptr, 0, ST_WPR | SB_WPR_SW);
return SCPE_OK; } }
if (cmd == OP_ERS) { /* erase? */
wwc = ((tbc + (RQ_NUMBY - 1)) & ~(RQ_NUMBY - 1)) >> 1;
for (i = 0; i < wwc; i++) rqxb[i] = 0; /* clr buf */
err = fseek_ext (uptr->fileref, da, SEEK_SET); /* set pos */
if (!err) fxwrite (rqxb, sizeof (int16), wwc, uptr->fileref);
err = ferror (uptr->fileref); } /* end if erase */
else if (cmd == OP_WR) { /* write? */
t = Map_ReadW (ba, tbc, rqxb, MAP); /* fetch buffer */
if (abc = tbc - t) { /* any xfer? */
wwc = ((abc + (RQ_NUMBY - 1)) & ~(RQ_NUMBY - 1)) >> 1;
for (i = (abc >> 1); i < wwc; i++) rqxb[i] = 0;
err = fseek_ext (uptr->fileref, da, SEEK_SET);
if (!err) fxwrite (rqxb, sizeof (int16), wwc, uptr->fileref);
err = ferror (uptr->fileref); }
if (t) { /* nxm? */
PUTP32 (pkt, RW_WBCL, bc - abc); /* adj bc */
PUTP32 (pkt, RW_WBAL, ba + abc); /* adj ba */
if (rq_hbe (cp, uptr)) /* post err log */
rq_rw_end (cp, uptr, EF_LOG, ST_HST | SB_HST_NXM);
return SCPE_OK; } } /* end else wr */
else { err = fseek_ext (uptr->fileref, da, SEEK_SET); /* set pos */
if (!err) {
i = fxread (rqxb, sizeof (int16), tbc >> 1, uptr->fileref);
for ( ; i < (tbc >> 1); i++) rqxb[i] = 0; /* fill */
err = ferror (uptr->fileref); }
if ((cmd == OP_RD) && !err) { /* read? */
if (t = Map_WriteW (ba, tbc, rqxb, MAP)) { /* store, nxm? */
PUTP32 (pkt, RW_WBCL, bc - (tbc - t)); /* adj bc */
PUTP32 (pkt, RW_WBAL, ba + (tbc - t)); /* adj ba */
if (rq_hbe (cp, uptr)) /* post err log */
rq_rw_end (cp, uptr, EF_LOG, ST_HST | SB_HST_NXM);
return SCPE_OK; }
}
else if ((cmd == OP_CMP) && !err) { /* compare? */
uint8 dby, mby;
for (i = 0; i < tbc; i++) { /* loop */
if (Map_ReadB (ba + i, 1, &mby, MAP)) { /* fetch, nxm? */
PUTP32 (pkt, RW_WBCL, bc - i); /* adj bc */
PUTP32 (pkt, RW_WBAL, bc - i); /* adj ba */
if (rq_hbe (cp, uptr)) /* post err log */
rq_rw_end (cp, uptr, EF_LOG, ST_HST | SB_HST_NXM);
return SCPE_OK; }
dby = (rqxb[i >> 1] >> ((i & 1)? 8: 0)) & 0xFF;
if (mby != dby) { /* cmp err? */
PUTP32 (pkt, RW_WBCL, bc - i); /* adj bc */
rq_rw_end (cp, uptr, 0, ST_CMP); /* done */
return SCPE_OK; } /* exit */
} /* end for */
} /* end else if */
} /* end else read */
if (err != 0) { /* error? */
if (rq_dte (cp, uptr, ST_DRV)) /* post err log */
rq_rw_end (cp, uptr, EF_LOG, ST_DRV); /* if ok, report err */
perror ("RQ I/O error");
clearerr (uptr->fileref);
return SCPE_IOERR; }
ba = ba + tbc; /* incr bus addr */
bc = bc - tbc; /* decr byte cnt */
bl = bl + ((tbc + (RQ_NUMBY - 1)) / RQ_NUMBY); /* incr blk # */
PUTP32 (pkt, RW_WBAL, ba); /* update pkt */
PUTP32 (pkt, RW_WBCL, bc);
PUTP32 (pkt, RW_WBLL, bl);
if (bc) sim_activate (uptr, rq_xtime); /* more? resched */
else rq_rw_end (cp, uptr, 0, ST_SUC); /* done! */
return SCPE_OK;
}
/* Transfer command complete */
t_bool rq_rw_end (MSC *cp, UNIT *uptr, uint32 flg, uint32 sts)
{
int32 pkt = uptr->cpkt; /* packet */
uint32 cmd = GETP (pkt, CMD_OPC, OPC); /* get cmd */
uint32 bc = GETP32 (pkt, RW_BCL); /* init bc */
uint32 wbc = GETP32 (pkt, RW_WBCL); /* work bc */
DEVICE *dptr = rq_devmap[uptr->cnum];
uptr->cpkt = 0; /* done */
PUTP32 (pkt, RW_BCL, bc - wbc); /* bytes processed */
cp->pak[pkt].d[RW_WBAL] = 0; /* clear temps */
cp->pak[pkt].d[RW_WBAH] = 0;
cp->pak[pkt].d[RW_WBCL] = 0;
cp->pak[pkt].d[RW_WBCH] = 0;
cp->pak[pkt].d[RW_WBLL] = 0;
cp->pak[pkt].d[RW_WBLH] = 0;
rq_putr (cp, pkt, cmd | OP_END, flg, sts, RW_LNT_D, UQ_TYP_SEQ); /* fill pkt */
if (!rq_putpkt (cp, pkt, TRUE)) return ERR; /* send pkt */
if (uptr->pktq) /* more to do? */
sim_activate (dptr->units + RQ_QUEUE, rq_qtime); /* activate thread */
return OK;
}
/* Data transfer error log packet */
t_bool rq_dte (MSC *cp, UNIT *uptr, uint32 err)
{
int32 pkt, tpkt;
uint32 lu, dtyp, lbn, ccyl, csurf, csect, t;
if ((cp->cflgs & CF_THS) == 0) return OK; /* logging? */
if (!rq_deqf (cp, &pkt)) return ERR; /* get log pkt */
tpkt = uptr->cpkt; /* rw pkt */
lu = cp->pak[tpkt].d[CMD_UN]; /* unit # */
lbn = GETP32 (tpkt, RW_WBLL); /* recent LBN */
dtyp = GET_DTYPE (uptr->flags); /* drv type */
if (drv_tab[dtyp].flgs & RQDF_SDI) t = 0; /* SDI? ovhd @ end */
else t = (drv_tab[dtyp].xbn + drv_tab[dtyp].dbn) / /* ovhd cylinders */
(drv_tab[dtyp].sect * drv_tab[dtyp].surf);
ccyl = t + (lbn / drv_tab[dtyp].cyl); /* curr real cyl */
t = lbn % drv_tab[dtyp].cyl; /* trk relative blk */
csurf = t / drv_tab[dtyp].surf; /* curr surf */
csect = t % drv_tab[dtyp].surf; /* curr sect */
cp->pak[pkt].d[ELP_REFL] = cp->pak[tpkt].d[CMD_REFL]; /* copy cmd ref */
cp->pak[pkt].d[ELP_REFH] = cp->pak[tpkt].d[CMD_REFH];
cp->pak[pkt].d[ELP_UN] = lu; /* copy unit */
cp->pak[pkt].d[ELP_SEQ] = 0; /* clr seq # */
cp->pak[pkt].d[DTE_CIDA] = 0; /* ctrl ID */
cp->pak[pkt].d[DTE_CIDB] = 0;
cp->pak[pkt].d[DTE_CIDC] = 0;
cp->pak[pkt].d[DTE_CIDD] = (RQ_CLASS << DTE_CIDD_V_CLS) |
(RQ_MODEL << DTE_CIDD_V_MOD);
cp->pak[pkt].d[DTE_VER] = (RQ_HVER << DTE_VER_V_HVER) |
(RQ_SVER << DTE_VER_V_SVER);
cp->pak[pkt].d[DTE_MLUN] = lu; /* MLUN */
cp->pak[pkt].d[DTE_UIDA] = lu; /* unit ID */
cp->pak[pkt].d[DTE_UIDB] = 0;
cp->pak[pkt].d[DTE_UIDC] = 0;
cp->pak[pkt].d[DTE_UIDD] = (UID_DISK << DTE_UIDD_V_CLS) |
(drv_tab[dtyp].mod << DTE_UIDD_V_MOD);
cp->pak[pkt].d[DTE_UVER] = 0; /* unit versn */
cp->pak[pkt].d[DTE_SCYL] = ccyl; /* cylinder */
cp->pak[pkt].d[DTE_VSNL] = 01234 + lu; /* vol ser # */
cp->pak[pkt].d[DTE_VSNH] = 0;
cp->pak[pkt].d[DTE_D1] = 0;
cp->pak[pkt].d[DTE_D2] = csect << DTE_D2_V_SECT; /* geometry */
cp->pak[pkt].d[DTE_D3] = (ccyl << DTE_D3_V_CYL) |
(csurf << DTE_D3_V_SURF);
rq_putr (cp, pkt, FM_SDE, LF_SNR, err, DTE_LNT, UQ_TYP_DAT);
return rq_putpkt (cp, pkt, TRUE);
}
/* Host bus error log packet */
t_bool rq_hbe (MSC *cp, UNIT *uptr)
{
int32 pkt, tpkt;
if ((cp->cflgs & CF_THS) == 0) return OK; /* logging? */
if (!rq_deqf (cp, &pkt)) return ERR; /* get log pkt */
tpkt = uptr->cpkt; /* rw pkt */
cp->pak[pkt].d[ELP_REFL] = cp->pak[tpkt].d[CMD_REFL]; /* copy cmd ref */
cp->pak[pkt].d[ELP_REFH] = cp->pak[tpkt].d[CMD_REFH];
cp->pak[pkt].d[ELP_UN] = cp->pak[tpkt].d[CMD_UN]; /* copy unit */
cp->pak[pkt].d[ELP_SEQ] = 0; /* clr seq # */
cp->pak[pkt].d[HBE_CIDA] = 0; /* ctrl ID */
cp->pak[pkt].d[HBE_CIDB] = 0;
cp->pak[pkt].d[HBE_CIDC] = 0;
cp->pak[pkt].d[HBE_CIDD] = (RQ_CLASS << DTE_CIDD_V_CLS) |
(RQ_MODEL << DTE_CIDD_V_MOD);
cp->pak[pkt].d[HBE_VER] = (RQ_HVER << HBE_VER_V_HVER) | /* versions */
(RQ_SVER << HBE_VER_V_SVER);
cp->pak[pkt].d[HBE_RSV] = 0;
cp->pak[pkt].d[HBE_BADL] = cp->pak[tpkt].d[RW_WBAL]; /* bad addr */
cp->pak[pkt].d[HBE_BADH] = cp->pak[tpkt].d[RW_WBAH];
rq_putr (cp, pkt, FM_BAD, LF_SNR, ST_HST | SB_HST_NXM, HBE_LNT, UQ_TYP_DAT);
return rq_putpkt (cp, pkt, TRUE);
}
/* Port last failure error log packet */
t_bool rq_plf (MSC *cp, uint32 err)
{
int32 pkt;
if (!rq_deqf (cp, &pkt)) return ERR; /* get log pkt */
cp->pak[pkt].d[ELP_REFL] = 0; /* ref = 0 */
cp->pak[pkt].d[ELP_REFH] = 0;
cp->pak[pkt].d[ELP_UN] = 0; /* no unit */
cp->pak[pkt].d[ELP_SEQ] = 0; /* no seq */
cp->pak[pkt].d[PLF_CIDA] = 0; /* cntl ID */
cp->pak[pkt].d[PLF_CIDB] = 0;
cp->pak[pkt].d[PLF_CIDC] = 0;
cp->pak[pkt].d[PLF_CIDD] = (RQ_CLASS << PLF_CIDD_V_CLS) |
(RQ_MODEL << PLF_CIDD_V_MOD);
cp->pak[pkt].d[PLF_VER] = (RQ_SVER << PLF_VER_V_SVER) |
(RQ_HVER << PLF_VER_V_HVER);
cp->pak[pkt].d[PLF_ERR] = err;
rq_putr (cp, pkt, FM_CNT, LF_SNR, ST_CNT, PLF_LNT, UQ_TYP_DAT);
cp->pak[pkt].d[UQ_HCTC] |= (UQ_CID_DIAG << UQ_HCTC_V_CID);
return rq_putpkt (cp, pkt, TRUE);
}
/* Unit now available attention packet */
int32 rq_una (MSC *cp, int32 un)
{
int32 pkt;
uint32 lu = cp->ubase + un;
UNIT *uptr = rq_getucb (cp, lu);
if (uptr == NULL) return OK; /* huh? */
if (!rq_deqf (cp, &pkt)) return ERR; /* get log pkt */
cp->pak[pkt].d[RSP_REFL] = 0; /* ref = 0 */
cp->pak[pkt].d[RSP_REFH] = 0;
cp->pak[pkt].d[RSP_UN] = lu;
cp->pak[pkt].d[RSP_RSV] = 0;
rq_putr_unit (cp, pkt, uptr, lu, FALSE); /* fill unit fields */
rq_putr (cp, pkt, OP_AVA, 0, 0, UNA_LNT, UQ_TYP_SEQ); /* fill std fields */
return rq_putpkt (cp, pkt, TRUE);
}
/* List handling
rq_deqf - dequeue head of free list (fatal err if none)
rq_deqh - dequeue head of list
rq_enqh - enqueue at head of list
rq_enqt - enqueue at tail of list
*/
t_bool rq_deqf (MSC *cp, int32 *pkt)
{
if (cp->freq == 0) return rq_fatal (cp, PE_NSR); /* no free pkts?? */
cp->pbsy = cp->pbsy + 1; /* cnt busy pkts */
*pkt = cp->freq; /* head of list */
cp->freq = cp->pak[cp->freq].link; /* next */
return OK;
}
int32 rq_deqh (MSC *cp, int32 *lh)
{
int32 ptr = *lh; /* head of list */
if (ptr) *lh = cp->pak[ptr].link; /* next */
return ptr;
}
void rq_enqh (MSC *cp, int32 *lh, int32 pkt)
{
if (pkt == 0) return; /* any pkt? */
cp->pak[pkt].link = *lh; /* link is old lh */
*lh = pkt; /* pkt is new lh */
return;
}
void rq_enqt (MSC *cp, int32 *lh, int32 pkt)
{
if (pkt == 0) return; /* any pkt? */
cp->pak[pkt].link = 0; /* it will be tail */
if (*lh == 0) *lh = pkt; /* if empty, enqh */
else { uint32 ptr = *lh; /* chase to end */
while (cp->pak[ptr].link) ptr = cp->pak[ptr].link;
cp->pak[ptr].link = pkt; } /* enq at tail */
return;
}
/* Packet and descriptor handling */
/* Get packet from command ring */
t_bool rq_getpkt (MSC *cp, int32 *pkt)
{
uint32 addr, desc;
if (!rq_getdesc (cp, &cp->cq, &desc)) return ERR; /* get cmd desc */
if ((desc & UQ_DESC_OWN) == 0) { /* none */
*pkt = 0; /* pkt = 0 */
return OK; } /* no error */
if (!rq_deqf (cp, pkt)) return ERR; /* get cmd pkt */
cp->hat = 0; /* dsbl hst timer */
addr = desc & UQ_ADDR; /* get Q22 addr */
if (Map_ReadW (addr + UQ_HDR_OFF, RQ_PKT_SIZE, cp->pak[*pkt].d, MAP))
return rq_fatal (cp, PE_PRE); /* read pkt */
return rq_putdesc (cp, &cp->cq, desc); /* release desc */
}
/* Put packet to response ring - note the clever hack about credits.
The controller sends all its credits to the host. Thereafter, it
supplies one credit for every response packet sent over. Simple!
*/
t_bool rq_putpkt (MSC *cp, int32 pkt, t_bool qt)
{
uint32 addr, desc, lnt, cr;
DEVICE *dptr = rq_devmap[cp->cnum];
if (pkt == 0) return OK; /* any packet? */
if (DBG_LOG (LOG_RQ)) fprintf (sim_log,
">>RQ%c: rsp=%04X, sts=%04X\n", 'A' + cp->cnum,
cp->pak[pkt].d[RSP_OPF], cp->pak[pkt].d[RSP_STS]);
if (!rq_getdesc (cp, &cp->rq, &desc)) return ERR; /* get rsp desc */
if ((desc & UQ_DESC_OWN) == 0) { /* not valid? */
if (qt) rq_enqt (cp, &cp->rspq, pkt); /* normal? q tail */
else rq_enqh (cp, &cp->rspq, pkt); /* resp q call */
sim_activate (dptr->units + RQ_QUEUE, rq_qtime); /* activate q thrd */
return OK; }
addr = desc & UQ_ADDR; /* get Q22 addr */
lnt = cp->pak[pkt].d[UQ_HLNT] - UQ_HDR_OFF; /* size, with hdr */
if ((GETP (pkt, UQ_HCTC, TYP) == UQ_TYP_SEQ) && /* seq packet? */
(GETP (pkt, CMD_OPC, OPC) & OP_END)) { /* end packet? */
cr = (cp->credits >= 14)? 14: cp->credits; /* max 14 credits */
cp->credits = cp->credits - cr; /* decr credits */
cp->pak[pkt].d[UQ_HCTC] |= ((cr + 1) << UQ_HCTC_V_CR); }
if (Map_WriteW (addr + UQ_HDR_OFF, lnt, cp->pak[pkt].d, MAP))
return rq_fatal (cp, PE_PWE); /* write pkt */
rq_enqh (cp, &cp->freq, pkt); /* pkt is free */
cp->pbsy = cp->pbsy - 1; /* decr busy cnt */
if (cp->pbsy == 0) cp->hat = cp->htmo; /* idle? strt hst tmr */
return rq_putdesc (cp, &cp->rq, desc); /* release desc */
}
/* Get a descriptor from the host */
t_bool rq_getdesc (MSC *cp, struct uq_ring *ring, uint32 *desc)
{
uint32 addr = ring->ba + ring->idx;
uint16 d[2];
if (Map_ReadW (addr, 4, d, MAP)) /* fetch desc */
return rq_fatal (cp, PE_QRE); /* err? dead */
*desc = ((uint32) d[0]) | (((uint32) d[1]) << 16);
return OK;
}
/* Return a descriptor to the host, clearing owner bit
If rings transitions from "empty" to "not empty" or "full" to
"not full", and interrupt bit was set, interrupt the host.
Actually, test whether previous ring entry was owned by host.
*/
t_bool rq_putdesc (MSC *cp, struct uq_ring *ring, uint32 desc)
{
uint32 prvd, newd = (desc & ~UQ_DESC_OWN) | UQ_DESC_F;
uint32 prva, addr = ring->ba + ring->idx;
uint16 d[2];
d[0] = newd & 0xFFFF; /* 32b to 16b */
d[1] = (newd >> 16) & 0xFFFF;
if (Map_WriteW (addr, 4, d, MAP)) /* store desc */
return rq_fatal (cp, PE_QWE); /* err? dead */
if (desc & UQ_DESC_F) { /* was F set? */
if (ring->lnt <= 4) rq_ring_int (cp, ring); /* lnt = 1? intr */
else { /* prv desc */
prva = ring->ba + ((ring->idx - 4) & (ring->lnt - 1));
if (Map_ReadW (prva, 4, d, MAP)) /* read prv */
return rq_fatal (cp, PE_QRE);
prvd = ((uint32) d[0]) | (((uint32) d[1]) << 16);
if (prvd & UQ_DESC_OWN) rq_ring_int (cp, ring); } }
ring->idx = (ring->idx + 4) & (ring->lnt - 1);
return OK;
}
/* Get unit descriptor for logical unit */
UNIT *rq_getucb (MSC *cp, uint32 lu)
{
DEVICE *dptr = rq_devmap[cp->cnum];
UNIT *uptr;
if ((lu < cp->ubase) || (lu >= (cp->ubase + RQ_NUMDR)))
return NULL;
uptr = dptr->units + (lu % RQ_NUMDR);
if (uptr->flags & UNIT_DIS) return NULL;
return uptr;
}
/* Hack unit flags */
void rq_setf_unit (MSC *cp, int32 pkt, UNIT *uptr)
{
uptr->uf = cp->pak[pkt].d[ONL_UFL] & UF_MSK; /* settable flags */
if ((cp->pak[pkt].d[CMD_MOD] & MD_SWP) && /* swre wrp enb? */
(cp->pak[pkt].d[ONL_UFL] & UF_WPS)) /* swre wrp on? */
uptr->uf = uptr->uf | UF_WPS; /* simon says... */
return;
}
/* Unit response fields */
void rq_putr_unit (MSC *cp, int32 pkt, UNIT *uptr, uint32 lu, t_bool all)
{
uint32 dtyp = GET_DTYPE (uptr->flags); /* get drive type */
uint32 maxlbn = uptr->capac / RQ_NUMBY; /* get max lbn */
cp->pak[pkt].d[ONL_MLUN] = lu; /* unit */
cp->pak[pkt].d[ONL_UFL] = uptr->uf | UF_RPL | RQ_WPH (uptr) | RQ_RMV (uptr);
cp->pak[pkt].d[ONL_RSVL] = 0; /* reserved */
cp->pak[pkt].d[ONL_RSVH] = 0;
cp->pak[pkt].d[ONL_UIDA] = lu; /* UID low */
cp->pak[pkt].d[ONL_UIDB] = 0;
cp->pak[pkt].d[ONL_UIDC] = 0;
cp->pak[pkt].d[ONL_UIDD] = (UID_DISK << ONL_UIDD_V_CLS) |
(drv_tab[dtyp].mod << ONL_UIDD_V_MOD); /* UID hi */
PUTP32 (pkt, ONL_MEDL, drv_tab[dtyp].med); /* media type */
if (all) { /* if long form */
PUTP32 (pkt, ONL_SIZL, maxlbn); /* user LBNs */
cp->pak[pkt].d[ONL_VSNL] = 01234 + lu; /* vol serial # */
cp->pak[pkt].d[ONL_VSNH] = 0; }
return;
}
/* UQ_HDR and RSP_OP fields */
void rq_putr (MSC *cp, int32 pkt, uint32 cmd, uint32 flg,
uint32 sts, uint32 lnt, uint32 typ)
{
cp->pak[pkt].d[RSP_OPF] = (cmd << RSP_OPF_V_OPC) | /* set cmd, flg */
(flg << RSP_OPF_V_FLG);
cp->pak[pkt].d[RSP_STS] = sts;
cp->pak[pkt].d[UQ_HLNT] = lnt; /* length */
cp->pak[pkt].d[UQ_HCTC] = (typ << UQ_HCTC_V_TYP) | /* type, cid */
(UQ_CID_MSCP << UQ_HCTC_V_CID); /* clr credits */
return;
}
/* Post interrupt during init */
void rq_init_int (MSC *cp)
{
if (cp->s1dat & (SA_S1H_IE | SA_S1H_VEC)) rq_setint (cp);
return;
}
/* Post interrupt during putpkt - note that NXMs are ignored! */
void rq_ring_int (MSC *cp, struct uq_ring *ring)
{
uint32 iadr = cp->comm + ring->ioff; /* addr intr wd */
uint16 flag = 1;
Map_WriteW (iadr, 2, &flag, MAP); /* write flag */
if (cp->s1dat & SA_S1H_VEC) rq_setint (cp); /* if enb, intr */
return;
}
/* Set RQ interrupt */
void rq_setint (MSC *cp)
{
cp->irq = 1; /* set ctrl int */
SET_INT (RQ); /* set master int */
return;
}
/* Clear RQ interrupt */
void rq_clrint (MSC *cp)
{
int32 i;
MSC *ncp;
cp->irq = 0; /* clr ctrl int */
for (i = 0; i < RQ_NUMCT; i++) { /* loop thru ctrls */
ncp = rq_ctxmap[i]; /* get context */
if (ncp->irq) { /* other interrupt? */
SET_INT (RQ); /* yes, set master */
return; } }
CLR_INT (RQ); /* no, clr master */
return;
}
/* Return interrupt vector */
int32 rq_inta (void)
{
int32 i;
MSC *ncp;
DEVICE *dptr;
DIB *dibp;
for (i = 0; i < RQ_NUMCT; i++) { /* loop thru ctrl */
ncp = rq_ctxmap[i]; /* get context */
if (ncp->irq) { /* ctrl int set? */
dptr = rq_devmap[i]; /* get device */
dibp = (DIB *) dptr->ctxt; /* get DIB */
rq_clrint (ncp); /* clear int req */
return dibp->vec; } } /* return vector */
return 0; /* no intr req */
}
/* Fatal error */
t_bool rq_fatal (MSC *cp, uint32 err)
{
if (DBG_LOG (LOG_RQ))
fprintf (sim_log, ">>RQ%c: fatal err=%X\n", 'A' + cp->cnum, err);
rq_reset (rq_devmap[cp->cnum]); /* reset device */
cp->sa = SA_ER | err; /* SA = dead code */
cp->csta = CST_DEAD; /* state = dead */
cp->perr = err; /* save error */
return ERR;
}
/* Set/clear hardware write lock */
t_stat rq_set_wlk (UNIT *uptr, int32 val, char *cptr, void *desc)
{
uint32 dtyp = GET_DTYPE (uptr->flags); /* get drive type */
if (drv_tab[dtyp].flgs & RQDF_RO) return SCPE_NOFNC; /* not on read only */
return SCPE_OK;
}
/* Show write lock status */
t_stat rq_show_wlk (FILE *st, UNIT *uptr, int32 val, void *desc)
{
uint32 dtyp = GET_DTYPE (uptr->flags); /* get drive type */
if (drv_tab[dtyp].flgs & RQDF_RO) fprintf (st, "read only");
else if (uptr->flags & UNIT_WPRT) fprintf (st, "write locked");
else fprintf (st, "write enabled");
return SCPE_OK;
}
/* Set unit type (and capacity if user defined) */
t_stat rq_set_type (UNIT *uptr, int32 val, char *cptr, void *desc)
{
uint32 cap;
uint32 max = sim_taddr_64? RA8U_EMAXC: RA8U_MAXC;
t_stat r;
if ((val < 0) || (val > RA8U_DTYPE) || ((val != RA8U_DTYPE) && cptr))
return SCPE_ARG;
if (uptr->flags & UNIT_ATT) return SCPE_ALATT;
if (cptr) {
cap = (int32) get_uint (cptr, 10, max, &r);
if ((r != SCPE_OK) || (cap < RA8U_MINC)) return SCPE_ARG;
drv_tab[val].lbn = cap * 1954; }
uptr->flags = (uptr->flags & ~UNIT_DTYPE) | (val << UNIT_V_DTYPE);
uptr->capac = ((t_addr) drv_tab[val].lbn) * RQ_NUMBY;
return SCPE_OK;
}
/* Show unit type */
t_stat rq_show_type (FILE *st, UNIT *uptr, int32 val, void *desc)
{
fprintf (st, "%s", drv_tab[GET_DTYPE (uptr->flags)].name);
return SCPE_OK;
}
/* Device attach */
t_stat rq_attach (UNIT *uptr, char *cptr)
{
int32 dtyp = GET_DTYPE (uptr->flags);
MSC *cp = rq_ctxmap[uptr->cnum];
t_stat r;
r = attach_unit (uptr, cptr);
if (r != SCPE_OK) return r;
if (cp->csta == CST_UP) uptr->flags = uptr->flags | UNIT_ATP;
return SCPE_OK;
}
/* Device detach */
t_stat rq_detach (UNIT *uptr)
{
t_stat r;
r = detach_unit (uptr); /* detach unit */
if (r != SCPE_OK) return r;
uptr->flags = uptr->flags & ~(UNIT_ONL | UNIT_ATP); /* clr onl, atn pend */
uptr->uf = 0; /* clr unit flgs */
return SCPE_OK;
}
/* Device reset */
t_stat rq_reset (DEVICE *dptr)
{
int32 i, j, cidx;
UNIT *uptr;
MSC *cp;
DIB *dibp = (DIB *) dptr->ctxt;
for (i = 0, cidx = -1; i < RQ_NUMCT; i++) { /* find ctrl num */
if (rq_devmap[i] == dptr) cidx = i; }
if (cidx < 0) return SCPE_IERR; /* not found??? */
cp = rq_ctxmap[cidx]; /* get context */
cp->cnum = cidx; /* init index */
cp->ubase = cidx * RQ_NUMDR; /* init unit base */
cp->csta = CST_S1; /* init stage 1 */
cp->s1dat = 0; /* no S1 data */
dibp->vec = 0; /* no vector */
cp->comm = 0; /* no comm region */
cp->sa = SA_S1 | SA_S1C_Q22 | SA_S1C_DI | SA_S1C_MP; /* init SA val */
cp->cflgs = CF_RPL; /* ctrl flgs off */
cp->htmo = RQ_DHTMO; /* default timeout */
cp->hat = cp->htmo; /* default timer */
cp->cq.ba = cp->cq.lnt = cp->cq.idx = 0; /* clr cmd ring */
cp->rq.ba = cp->rq.lnt = cp->rq.idx = 0; /* clr rsp ring */
cp->credits = (RQ_NPKTS / 2) - 1; /* init credits */
cp->freq = 1; /* init free list */
for (i = 0; i < RQ_NPKTS; i++) { /* all pkts free */
if (i) cp->pak[i].link = (i + 1) & RQ_M_NPKTS;
else cp->pak[i].link = 0;
for (j = 0; j < RQ_PKT_SIZE_W; j++) cp->pak[i].d[j] = 0; }
cp->rspq = 0; /* no q'd rsp pkts */
cp->pbsy = 0; /* all pkts free */
cp->pip = 0; /* not polling */
rq_clrint (cp); /* clr intr req */
for (i = 0; i < (RQ_NUMDR + 2); i++) { /* init units */
uptr = dptr->units + i;
sim_cancel (uptr); /* clr activity */
uptr->cnum = cidx; /* set ctrl index */
uptr->flags = uptr->flags & ~(UNIT_ONL | UNIT_ATP);
uptr->uf = 0; /* clr unit flags */
uptr->cpkt = uptr->pktq = 0; } /* clr pkt q's */
if (rqxb == NULL) rqxb = calloc (RQ_MAXFR >> 1, sizeof (unsigned int16));
if (rqxb == NULL) return SCPE_MEM;
return auto_config (0, 0); /* run autoconfig */
}
/* Device bootstrap */
#if defined (VM_PDP11)
#define BOOT_START 016000 /* start */
#define BOOT_ENTRY (BOOT_START + 002) /* entry */
#define BOOT_UNIT (BOOT_START + 010) /* unit number */
#define BOOT_CSR (BOOT_START + 014) /* CSR */
#define BOOT_LEN (sizeof (boot_rom) / sizeof (int16))
static const uint16 boot_rom[] = {
0042125, /* st: "UD" */
/* Four step init process */
0012706, 0016000, /* mov #st,sp */
0012700, 0000000, /* mov #unit,r0 */
0012701, 0172150, /* mov #172150, r1 ; ip addr */
0012704, 0016162, /* mov #it, r4 */
0012705, 0004000, /* mov #4000,r5 ; s1 mask */
0010102, /* mov r1,r2 */
0005022, /* clr (r2)+ ; init */
0005712, /* 10$: tst (r2) ; err? */
0100001, /* bpl 20$ */
0000000, /* halt */
0030512, /* 20$: bit r5,(r2) ; step set? */
0001773, /* beq 10$ ; wait */
0012412, /* mov (r4)+,(r2) ; send next */
0006305, /* asl r5 ; next mask */
0100370, /* bpl 10$ ; s4 done? */
/* Send ONL, READ commands */
0105714, /* 30$: tstb (r4) ; end tbl? */
0001434, /* beq done ; 0 = yes */
0012702, 0007000, /* mov #rpkt-4,r2 ; clr pkts */
0005022, /* 40$: clr (r2)+ */
0020227, 0007204, /* cmp r2,#comm */
0103774, /* blo 40$ */
0112437, 0007100, /* movb (r4)+,cpkt-4 ; set lnt */
0110037, 0007110, /* movb r0,cpkt+4 ; set unit */
0112437, 0007114, /* movb (r4)+,cpkt+10 ; set op */
0112437, 0007121, /* movb (r4)+,cpkt+15 ; set param */
0012722, 0007004, /* mov #rpkt,(r2)+ ; rq desc */
0010522, /* mov r5,(r2)+ ; rq own */
0012722, 0007104, /* mov #ckpt,(r2)+ ; cq desc */
0010512, /* mov r5,(r2) ; cq own */
0024242, /* cmp -(r2),-(r2) ; back up */
0005711, /* tst (r1) ; wake ctrl */
0005712, /* 50$: tst (r2) ; rq own clr? */
0100776, /* bmi 50$ ; wait */
0005737, 0007016, /* tst rpkt+12 ; stat ok? */
0001743, /* beq 30$ ; next cmd */
0000000, /* halt */
/* Boot block read in, jump to 0 */
0005011, /* done: clr (r1) ; for M+ */
0005003, /* clr r3 */
0012704, BOOT_START+020, /* mov #st+020,r4 */
0005005, /* clr r5 */
0005007, /* clr pc */
/* Data */
0100000, /* it: no ints, ring sz = 1 */
0007204, /* .word comm */
0000000, /* .word 0 */
0000001, /* .word 1 */
0004420, /* .byte 20,11 */
0020000, /* .byte 0,40 */
0001041, /* .byte 41,2 */
0000000
};
t_stat rq_boot (int32 unitno, DEVICE *dptr)
{
int32 i;
extern int32 saved_PC;
extern uint16 *M;
DIB *dibp = (DIB *) dptr->ctxt;
for (i = 0; i < BOOT_LEN; i++) M[(BOOT_START >> 1) + i] = boot_rom[i];
M[BOOT_UNIT >> 1] = unitno & 3;
M[BOOT_CSR >> 1] = dibp->ba & DMASK;
saved_PC = BOOT_ENTRY;
return SCPE_OK;
}
#else
t_stat rq_boot (int32 unitno, DEVICE *dptr)
{
return SCPE_NOFNC;
}
#endif
/* Special show commands */
void rq_show_ring (FILE *st, struct uq_ring *rp)
{
uint32 i, desc;
uint16 d[2];
#if defined (VM_PDP11)
fprintf (st, "ring, base = %o, index = %d, length = %d\n",
rp->ba, rp->idx >> 2, rp->lnt >> 2);
#else
fprintf (st, "ring, base = %x, index = %d, length = %d\n",
rp->ba, rp->idx >> 2, rp->lnt >> 2);
#endif
for (i = 0; i < (rp->lnt >> 2); i++) {
if (Map_ReadW (rp->ba + (i << 2), 4, d, MAP)) {
fprintf (st, " %3d: non-existent memory\n", i);
break; }
desc = ((uint32) d[0]) | (((uint32) d[1]) << 16);
#if defined (VM_PDP11)
fprintf (st, " %3d: %011o\n", i, desc);
#else
fprintf (st, " %3d: %08x\n", i, desc);
#endif
}
return;
}
void rq_show_pkt (FILE *st, MSC *cp, int32 pkt)
{
int32 i, j;
uint32 cr = GETP (pkt, UQ_HCTC, CR);
uint32 typ = GETP (pkt, UQ_HCTC, TYP);
uint32 cid = GETP (pkt, UQ_HCTC, CID);
fprintf (st, "packet %d, credits = %d, type = %d, cid = %d\n",
pkt, cr, typ, cid);
for (i = 0; i < RQ_SH_MAX; i = i + RQ_SH_PPL) {
fprintf (st, " %2d:", i);
for (j = i; j < (i + RQ_SH_PPL); j++)
#if defined (VM_PDP11)
fprintf (st, " %06o", cp->pak[pkt].d[j]);
#else
fprintf (st, " %04x", cp->pak[pkt].d[j]);
#endif
fprintf (st, "\n");
}
return;
}
t_stat rq_show_unitq (FILE *st, UNIT *uptr, int32 val, void *desc)
{
MSC *cp = rq_ctxmap[uptr->cnum];
DEVICE *dptr = rq_devmap[uptr->cnum];
int32 pkt, u;
u = uptr - dptr->units;
if (cp->csta != CST_UP) {
fprintf (st, "Controller is not initialized\n");
return SCPE_OK; }
if ((uptr->flags & UNIT_ONL) == 0) {
if (uptr->flags & UNIT_ATT)
fprintf (st, "Unit %d is available\n", u);
else fprintf (st, "Unit %d is offline\n", u);
return SCPE_OK; }
if (uptr->cpkt) {
fprintf (st, "Unit %d current ", u);
rq_show_pkt (st, cp, uptr->cpkt);
if (pkt = uptr->pktq) {
do { fprintf (st, "Unit %d queued ", u);
rq_show_pkt (st, cp, pkt); }
while (pkt = cp->pak[pkt].link); } }
else fprintf (st, "Unit %d queues are empty\n", u);
return SCPE_OK;
}
t_stat rq_show_ctrl (FILE *st, UNIT *uptr, int32 val, void *desc)
{
MSC *cp = rq_ctxmap[uptr->cnum];
DEVICE *dptr = rq_devmap[uptr->cnum];
int32 i, pkt;
if (cp->csta != CST_UP) {
fprintf (st, "Controller is not initialized\n");
return SCPE_OK; }
if (val & RQ_SH_RI) {
if (cp->pip) fprintf (st, "Polling in progress, host timer = %d\n", cp->hat);
else fprintf (st, "Host timer = %d\n", cp->hat);
fprintf (st, "Command ");
rq_show_ring (st, &cp->cq);
fprintf (st, "Response ");
rq_show_ring (st, &cp->rq);
}
if (val & RQ_SH_FR) {
if (pkt = cp->freq) {
for (i = 0; pkt != 0; i++, pkt = cp->pak[pkt].link) {
if (i == 0) fprintf (st, "Free queue = %d", pkt);
else if ((i % 16) == 0) fprintf (st, ",\n %d", pkt);
else fprintf (st, ", %d", pkt); }
fprintf (st, "\n"); }
else fprintf (st, "Free queue is empty\n");
}
if (val & RQ_SH_RS) {
if (pkt = cp->rspq) {
do { fprintf (st, "Response ");
rq_show_pkt (st, cp, pkt); }
while (pkt = cp->pak[pkt].link); }
else fprintf (st, "Response queue is empty\n");
}
if (val & RQ_SH_UN) {
for (i = 0; i < RQ_NUMDR; i++)
rq_show_unitq (st, dptr->units + i, 0, desc);
}
return SCPE_OK;
}