1097 lines
35 KiB
C
1097 lines
35 KiB
C
/* vax440_sysdev.c: MicroVAX 4000-60 system-specific logic
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Copyright (c) 2019, Matt Burke
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This module incorporates code from SimH, Copyright (c) 1998-2008, Robert M Supnik
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name(s) of the author(s) shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from the author(s).
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This module contains the MicroVAX 4000-60 system-specific registers and devices.
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sysd system devices
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*/
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#include "vax_defs.h"
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#include "sim_ether.h"
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#ifdef DONT_USE_INTERNAL_ROM
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#if defined (VAX_46)
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#define BOOT_CODE_FILENAME "ka46a.bin"
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#elif defined (VAX_47)
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#define BOOT_CODE_FILENAME "ka47a.bin"
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#elif defined (VAX_48)
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#define BOOT_CODE_FILENAME "ka48a.bin"
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#endif
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#else /* !DONT_USE_INTERNAL_ROM */
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#if defined (VAX_46)
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#include "vax_ka46a_bin.h" /* Defines BOOT_CODE_FILENAME and BOOT_CODE_ARRAY, etc */
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#elif defined (VAX_47)
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#include "vax_ka47a_bin.h" /* Defines BOOT_CODE_FILENAME and BOOT_CODE_ARRAY, etc */
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#elif defined (VAX_48)
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#include "vax_ka48a_bin.h" /* Defines BOOT_CODE_FILENAME and BOOT_CODE_ARRAY, etc */
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#endif
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#endif /* DONT_USE_INTERNAL_ROM */
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t_stat vax460_boot (int32 flag, CONST char *ptr);
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/* Special boot command, overrides regular boot */
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CTAB vax460_cmd[] = {
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{ "BOOT", &vax460_boot, RU_BOOT,
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"bo{ot} boot simulator\n", NULL, &run_cmd_message },
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{ NULL }
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};
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/* KA460 configuration & test register */
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#define CFGT_MEM 0x003F /* memory option */
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#define CFGT_V_VID 6
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#define CFGT_M_VID 0x3
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#define CFGT_VID (CFGT_M_VID << CFGT_V_VID) /* video option */
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#define CFGT_L3C 0x0100 /* line 3 console */
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#define CFGT_V_SIM 9
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#define CFGT_M_SIM 0x3F
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#define CFGT_SIM (CFGT_M_SIM << CFGT_V_SIM) /* SIMM type */
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/* KA460 parity control register - checked */
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#define PARCTL_CPEN 0x00000001 /* system wide parity */
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#define PARCTL_REV 0x000000F0
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#define PARCTL_NPEN 0x00000100 /* NI parity en */
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#define PARCTL_NPERR 0x00000200 /* NI parity err */
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#define PARCTL_NMAP 0x00000400
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#define PARCTL_SPEN 0x00010000 /* SCSI parity en */
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#define PARCTL_SPERR 0x00020000 /* SCSI parity err */
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#define PARCTL_SMAP 0x00040000
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#define PARCTL_INVEN 0x01000000
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#define PARCTL_AGS 0x02000000 /* AG stall */
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#define PARCTL_ADP 0x80000000
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#define PARCTL_RD 0x830707F1
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#define PARCTL_WR 0x01010101
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/* KA460 secondary cache control register - checked */
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#define SCCR_CENA 0x00000001
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#define SCCR_TERR 0x00000002
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#define SCCR_WBMODE 0x00000080
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#define SCCR_SPECIO 0x00000100 /* SPECIO inhibit */
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#define SCCR_FONFUL 0x00000200
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#define SCCR_REV 0x00000400
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#define SCCR_RD 0x00000783
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#define SCCR_WR 0x00000101
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/* KA460 Memory system error register */
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#define MSER_PE 0x00000001 /* Parity Enable */
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#define MSER_WWP 0x00000002 /* Write Wrong Parity */
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#define MSER_PER 0x00000040 /* Parity Error */
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#define MSER_MCD0 0x00000100 /* Mem Code 0 */
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#define MSER_MBZ 0xFFFFFEBC
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#define MSER_RD (MSER_PE | MSER_WWP | MSER_PER | \
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MSER_PER | MSER_MCD0)
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#define MSER_WR (MSER_PE | MSER_WWP)
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#define MSER_RS (MSER_PER)
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/* KA460 memory error address reg */
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#define MEAR_FAD 0x00007FFF /* failing addr */
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#define MEAR_RD (MEAR_FAD)
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#define ROM_VEC 0x8 /* ROM longword for first device vector */
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/* DMA map registers */
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#define DMANMAPR 32768 /* number of map reg */
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#define DMAMAP_VLD 0x80000000 /* valid */
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#if defined (VAX_46) || defined (VAX_47)
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#define DMAMAP_PAG 0x0003FFFF /* mem page */
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#elif defined (VAX_48)
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#define DMAMAP_PAG 0x0000FFFF /* mem page */
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#endif
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extern int32 tmr_int;
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extern DEVICE lk_dev, vs_dev;
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extern uint32 *rom;
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uint32 *isdn = NULL; /* ISDN/audio registers */
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uint32 *invfl = NULL; /* invalidate filter */
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uint32 *cache2ds = NULL; /* cache 2 data store */
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uint32 *cache2ts = NULL; /* cache 2 tag store */
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int32 conisp, conpc, conpsl; /* console reg */
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int32 ka_hltcod = 0; /* KA460 halt code */
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int32 ka_mapbase = 0; /* KA460 map base */
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int32 ka_cfgtst = 0x90; /* KA460 config/test */
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int32 ka_led = 0; /* KA460 diag display */
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int32 ka_parctl = 0xF0; /* KA460 parity control */
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int32 mem_cnfg = 0;
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int32 CADR = 0; /* cache disable reg */
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int32 SCCR = 0; /* secondary cache control */
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int32 sys_model = 0; /* MicroVAX or VAXstation */
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int32 int_req[IPL_HLVL] = { 0 }; /* interrupt requests */
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int32 int_mask = 0; /* interrupt mask */
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uint32 tmr_tir = 0; /* curr interval */
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t_stat sysd_reset (DEVICE *dptr);
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const char *sysd_description (DEVICE *dptr);
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int32 ka_rd (int32 pa);
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void ka_wr (int32 pa, int32 val, int32 lnt);
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int32 con_halt (int32 code, int32 cc);
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extern int32 iccs_rd (void);
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extern int32 rom_rd (int32 pa);
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extern int32 nvr_rd (int32 pa);
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extern int32 nar_rd (int32 pa);
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extern int32 dz_rd (int32 pa);
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extern int32 or_rd (int32 pa);
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extern int32 rz_rd (int32 pa);
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extern int32 xs_rd (int32 pa);
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extern void iccs_wr (int32 dat);
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extern void nvr_wr (int32 pa, int32 val, int32 lnt);
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extern void dz_wr (int32 pa, int32 val, int32 lnt);
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extern void rz_wr (int32 pa, int32 val, int32 lnt);
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extern void xs_wr (int32 pa, int32 val, int32 lnt);
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UNIT sysd_unit = { UDATA (NULL, 0, 0) };
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REG sysd_reg[] = {
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{ HRDATAD (CONISP, conisp, 32, "console ISP") },
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{ HRDATAD (CONPC, conpc, 32, "console PD") },
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{ HRDATAD (CONPSL, conpsl, 32, "console PSL") },
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{ HRDATAD (CFGTST, ka_cfgtst, 16, "KA460 config/test") },
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{ HRDATAD (HLTCOD, ka_hltcod, 32, "KA460 halt code") },
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{ HRDATAD (MAPBASE, ka_mapbase, 32, "KA460 DMA map base") },
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{ HRDATAD (LED, ka_led, 16, "KA460 diag display") },
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{ HRDATAD (PARCTL, ka_parctl, 32, "KA460 parity control") },
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{ NULL }
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};
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MTAB sysd_mod[] = {
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{ 0 },
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};
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DEVICE sysd_dev = {
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"SYSD", &sysd_unit, sysd_reg, sysd_mod,
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1, 16, 16, 1, 16, 8,
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NULL, NULL, &sysd_reset,
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NULL, NULL, NULL,
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NULL, 0, 0, NULL, NULL, NULL, NULL, NULL, NULL,
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&sysd_description
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};
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/* Find highest priority outstanding interrupt */
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int32 eval_int (void)
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{
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int32 ipl = PSL_GETIPL (PSL);
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int32 i, t;
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static const int32 sw_int_mask[IPL_SMAX] = {
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0xFFFE, 0xFFFC, 0xFFF8, 0xFFF0, /* 0 - 3 */
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0xFFE0, 0xFFC0, 0xFF80, 0xFF00, /* 4 - 7 */
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0xFE00, 0xFC00, 0xF800, 0xF000, /* 8 - B */
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0xE000, 0xC000, 0x8000 /* C - E */
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};
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if (hlt_pin) /* hlt pin int */
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return IPL_HLTPIN;
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if ((ipl < IPL_CLK) && tmr_int) /* clock int */
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return IPL_CLK;
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if (ipl < IPL_HW) { /* chk hwre int */
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if (int_req[0] & int_mask)
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return IPL_HW;
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}
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if (ipl >= IPL_SMAX) /* ipl >= sw max? */
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return 0;
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if ((t = SISR & sw_int_mask[ipl]) == 0) /* eligible req */
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return 0;
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for (i = IPL_SMAX; i > ipl; i--) { /* check swre int */
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if ((t >> i) & 1) /* req != 0? int */
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return i;
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}
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return 0;
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}
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/* Return vector for highest priority hardware interrupt at IPL lvl */
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int32 get_vector (int32 lvl)
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{
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int32 i;
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int32 int_unmask = int_req[0] & int_mask;
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if (lvl == IPL_CLK) { /* clock? */
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tmr_int = 0; /* clear req */
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return SCB_INTTIM; /* return vector */
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}
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if (lvl > IPL_HMAX) { /* error req lvl? */
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ABORT (STOP_UIPL); /* unknown intr */
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}
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for (i = 7; int_unmask && (i >= 0); i--) {
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if ((int_unmask >> i) & 1) {
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int_req[0] = int_req[0] & ~(1u << i);
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return rom[ROM_VEC + i] & 0x3FF; /* get vector from ROM */
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}
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}
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return 0;
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}
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/* Map an address via the translation map */
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t_bool dma_map_addr (uint32 da, uint32 *ma)
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{
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int32 dblk = (da >> VA_V_VPN); /* DMA blk */
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if (dblk <= DMANMAPR) {
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int32 dmap = ReadL (ka_mapbase + (dblk << 2));
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if (dmap & DMAMAP_VLD) { /* valid? */
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*ma = ((dmap & DMAMAP_PAG) << VA_V_VPN) + VA_GETOFF (da);
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if (ADDR_IS_MEM (*ma)) /* legit addr */
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return TRUE;
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}
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}
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return FALSE;
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}
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/* DMA buffer routines, aligned access
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Map_ReadB - fetch byte buffer from memory
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Map_ReadW - fetch word buffer from memory
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Map_WriteB - store byte buffer into memory
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Map_WriteW - store word buffer into memory
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*/
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int32 Map_ReadB (uint32 ba, int32 bc, uint8 *buf)
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{
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int32 i;
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uint32 ma, dat;
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if ((ba | bc) & 03) { /* check alignment */
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for (i = ma = 0; i < bc; i++, buf++) { /* by bytes */
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if ((ma & VA_M_OFF) == 0) { /* need map? */
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if (!dma_map_addr (ba + i, &ma)) /* inv or NXM? */
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return (bc - i);
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}
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*buf = ReadB (ma);
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ma = ma + 1;
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}
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}
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else {
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for (i = ma = 0; i < bc; i = i + 4, buf++) { /* by longwords */
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if ((ma & VA_M_OFF) == 0) { /* need map? */
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if (!dma_map_addr (ba + i, &ma)) /* inv or NXM? */
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return (bc - i);
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}
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dat = ReadL (ma); /* get lw */
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*buf++ = dat & BMASK; /* low 8b */
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*buf++ = (dat >> 8) & BMASK; /* next 8b */
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*buf++ = (dat >> 16) & BMASK; /* next 8b */
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*buf = (dat >> 24) & BMASK;
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ma = ma + 4;
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}
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}
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return 0;
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}
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int32 Map_ReadW (uint32 ba, int32 bc, uint16 *buf)
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{
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int32 i;
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uint32 ma,dat;
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ba = ba & ~01;
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bc = bc & ~01;
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if ((ba | bc) & 03) { /* check alignment */
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for (i = ma = 0; i < bc; i = i + 2, buf++) { /* by words */
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if ((ma & VA_M_OFF) == 0) { /* need map? */
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if (!dma_map_addr (ba + i, &ma)) /* inv or NXM? */
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return (bc - i);
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}
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*buf = ReadW (ma);
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ma = ma + 2;
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}
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}
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else {
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for (i = ma = 0; i < bc; i = i + 4, buf++) { /* by longwords */
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if ((ma & VA_M_OFF) == 0) { /* need map? */
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if (!dma_map_addr (ba + i, &ma)) /* inv or NXM? */
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return (bc - i);
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}
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dat = ReadL (ma); /* get lw */
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*buf++ = dat & WMASK; /* low 16b */
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*buf = (dat >> 16) & WMASK; /* high 16b */
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ma = ma + 4;
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}
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}
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return 0;
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}
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int32 Map_WriteB (uint32 ba, int32 bc, uint8 *buf)
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{
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int32 i;
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uint32 ma, dat;
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if ((ba | bc) & 03) { /* check alignment */
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for (i = ma = 0; i < bc; i++, buf++) { /* by bytes */
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if ((ma & VA_M_OFF) == 0) { /* need map? */
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if (!dma_map_addr (ba + i, &ma)) /* inv or NXM? */
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return (bc - i);
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}
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WriteB (ma, *buf);
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ma = ma + 1;
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}
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}
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else {
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for (i = ma = 0; i < bc; i = i + 4, buf++) { /* by longwords */
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if ((ma & VA_M_OFF) == 0) { /* need map? */
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if (!dma_map_addr (ba + i, &ma)) /* inv or NXM? */
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return (bc - i);
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}
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dat = (uint32) *buf++; /* get low 8b */
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dat = dat | (((uint32) *buf++) << 8); /* merge next 8b */
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dat = dat | (((uint32) *buf++) << 16); /* merge next 8b */
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dat = dat | (((uint32) *buf) << 24); /* merge hi 8b */
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WriteL (ma, dat); /* store lw */
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ma = ma + 4;
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}
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}
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return 0;
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}
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int32 Map_WriteW (uint32 ba, int32 bc, uint16 *buf)
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{
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int32 i;
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uint32 ma, dat;
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ba = ba & ~01;
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bc = bc & ~01;
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if ((ba | bc) & 03) { /* check alignment */
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for (i = ma = 0; i < bc; i = i + 2, buf++) { /* by words */
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if ((ma & VA_M_OFF) == 0) { /* need map? */
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if (!dma_map_addr (ba + i, &ma)) /* inv or NXM? */
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return (bc - i);
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}
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WriteW (ma, *buf);
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ma = ma + 2;
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}
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}
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else {
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for (i = ma = 0; i < bc; i = i + 4, buf++) { /* by longwords */
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if ((ma & VA_M_OFF) == 0) { /* need map? */
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if (!dma_map_addr (ba + i, &ma)) /* inv or NXM? */
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return (bc - i);
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}
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dat = (uint32) *buf++; /* get low 16b */
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dat = dat | (((uint32) *buf) << 16); /* merge hi 16b */
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WriteL (ma, dat); /* store lw */
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ma = ma + 4;
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}
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}
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return 0;
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}
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int32 isdn_rd (int32 pa)
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{
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int32 rg = (pa - 0x200D0000) >> 2;
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return isdn[rg];
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}
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void isdn_wr (int32 pa, int32 val, int32 lnt)
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{
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int32 rg = (pa - 0x200D0000) >> 2;
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if (lnt < L_LONG) { /* byte or word? */
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int32 sc = (pa & 3) << 3; /* merge */
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int32 mask = (lnt == L_WORD)? 0xFFFF: 0xFF;
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isdn[rg] = ((val & mask) << sc) | (isdn[rg] & ~(mask << sc));
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}
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else isdn[rg] = val;
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}
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int32 cfg_rd (int32 pa)
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{
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int32 val = ka_cfgtst;
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t_addr mem = MEMSIZE;
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uint32 sc;
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#if defined (VAX_46) || defined (VAX_47)
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mem -= (1u << 23); /* 8MB on system board */
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for (sc = 0; mem > 0; sc+=2) {
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if (mem >= (1u << 25)) {
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val |= (0x3 << sc); /* add two 16MB SIMMs */
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val |= (0x3 << (sc + CFGT_V_SIM));
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mem -= (1u << 25);
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}
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else {
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val |= (0x3 << sc); /* add two 4MB SIMMs */
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val = (val & ~CFGT_SIM) | ((val & CFGT_SIM) << 2); /* must be installed before 16MB SIMMs */
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mem -= (1u << 23);
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}
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}
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#elif defined (VAX_48)
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val |= 0x1; /* bit zero always set */
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for (sc = 1; mem > 0; sc++) {
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val |= (0x1 << sc); /* add two 4MB SIMMs */
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mem -= (1u << 23);
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}
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#endif
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return val;
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}
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void ioreset_wr (int32 pa, int32 val, int32 lnt)
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{
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reset_all (6);
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}
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/* Read KA460 specific IPR's */
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int32 ReadIPR (int32 rg)
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{
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int32 val;
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|
|
switch (rg) {
|
|
|
|
case MT_ICCS: /* ICCS */
|
|
val = iccs_rd ();
|
|
break;
|
|
|
|
case MT_MCESR: /* MCESR (not impl) */
|
|
val = 0;
|
|
break;
|
|
|
|
case MT_ACCS: /* ACCS (not impl) */
|
|
val = 0;
|
|
break;
|
|
|
|
case MT_CONISP: /* console ISP */
|
|
val = conisp;
|
|
break;
|
|
|
|
case MT_CONPC: /* console PC */
|
|
val = conpc;
|
|
break;
|
|
|
|
case MT_CONPSL: /* console PSL */
|
|
val = conpsl;
|
|
break;
|
|
|
|
case MT_CADR: /* CADR */
|
|
val = CADR & 0xFF;
|
|
break;
|
|
|
|
case MT_CAER: /* CAER */
|
|
val = 0;
|
|
break;
|
|
|
|
case MT_PCTAG: /* PCTAG (not impl) */
|
|
val = 0;
|
|
break;
|
|
|
|
case MT_PCIDX: /* PCIDX (not impl) */
|
|
val = 0;
|
|
break;
|
|
|
|
case MT_PCERR: /* PCERR (not impl) */
|
|
val = 0;
|
|
break;
|
|
|
|
case MT_PCSTS: /* PCSTS (not impl) */
|
|
val = 0;
|
|
break;
|
|
|
|
case MT_SID: /* SID */
|
|
val = VAX4X_SID | VAX4X_UREV;
|
|
break;
|
|
|
|
default:
|
|
RSVD_OPND_FAULT(ReadIPR);
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
/* Write KA460 specific IPR's */
|
|
|
|
void WriteIPR (int32 rg, int32 val)
|
|
{
|
|
switch (rg) {
|
|
|
|
case MT_ICCS: /* ICCS */
|
|
iccs_wr (val);
|
|
break;
|
|
|
|
case MT_NICR: /* NICR (not impl) */
|
|
break;
|
|
|
|
case MT_MCESR: /* MCESR (not impl) */
|
|
break;
|
|
|
|
case MT_ACCS: /* ACCS (not impl) */
|
|
break;
|
|
|
|
case MT_CONISP: /* console ISP */
|
|
conisp = val;
|
|
break;
|
|
|
|
case MT_CONPC: /* console PC */
|
|
conpc = val;
|
|
break;
|
|
|
|
case MT_CONPSL: /* console PSL */
|
|
conpsl = val;
|
|
break;
|
|
|
|
case MT_CADR: /* CADR */
|
|
CADR = (val & CADR_RW) | CADR_MBO;
|
|
break;
|
|
|
|
case MT_CAER: /* CAER */
|
|
break;
|
|
|
|
case MT_PCTAG: /* PCTAG (not impl) */
|
|
break;
|
|
|
|
case MT_PCIDX: /* PCIDX (not impl) */
|
|
break;
|
|
|
|
case MT_PCERR: /* PCERR (not impl) */
|
|
break;
|
|
|
|
case MT_PCSTS: /* PCSTS (not impl) */
|
|
break;
|
|
|
|
default:
|
|
RSVD_OPND_FAULT(WriteIPR);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
int32 invfl_rd (int32 pa)
|
|
{
|
|
int32 rg = (pa - 0x20200000) >> 2;
|
|
return invfl[rg];
|
|
}
|
|
|
|
void invfl_wr (int32 pa, int32 val, int32 lnt)
|
|
{
|
|
int32 rg = (pa - 0x20200000) >> 2;
|
|
if (lnt < L_LONG) { /* byte or word? */
|
|
int32 sc = (pa & 3) << 3; /* merge */
|
|
int32 mask = (lnt == L_WORD)? 0xFFFF: 0xFF;
|
|
invfl[rg] = ((val & mask) << sc) | (invfl[rg] & ~(mask << sc));
|
|
}
|
|
else invfl[rg] = val;
|
|
}
|
|
|
|
int32 cache2ds_rd (int32 pa)
|
|
{
|
|
int32 rg = (pa - 0x08000000) >> 2;
|
|
return cache2ds[rg];
|
|
}
|
|
|
|
void cache2ds_wr (int32 pa, int32 val, int32 lnt)
|
|
{
|
|
int32 rg = (pa - 0x08000000) >> 2;
|
|
if (lnt < L_LONG) { /* byte or word? */
|
|
int32 sc = (pa & 3) << 3; /* merge */
|
|
int32 mask = (lnt == L_WORD)? 0xFFFF: 0xFF;
|
|
cache2ds[rg] = ((val & mask) << sc) | (cache2ds[rg] & ~(mask << sc));
|
|
}
|
|
else cache2ds[rg] = val;
|
|
}
|
|
|
|
int32 cache2ts_rd (int32 pa)
|
|
{
|
|
int32 rg = (pa - 0x22000000) >> 2;
|
|
return cache2ts[rg];
|
|
}
|
|
|
|
void cache2ts_wr (int32 pa, int32 val, int32 lnt)
|
|
{
|
|
int32 rg = (pa - 0x22000000) >> 2;
|
|
if (lnt < L_LONG) { /* byte or word? */
|
|
int32 sc = (pa & 3) << 3; /* merge */
|
|
int32 mask = (lnt == L_WORD)? 0xFFFF: 0xFF;
|
|
cache2ts[rg] = ((val & mask) << sc) | (cache2ts[rg] & ~(mask << sc));
|
|
}
|
|
else cache2ts[rg] = val;
|
|
}
|
|
|
|
int32 dma_map_rd (int32 pa)
|
|
{
|
|
int32 rg = (pa - DMABASE);
|
|
int32 val = ReadL (ka_mapbase + rg);
|
|
return val;
|
|
}
|
|
|
|
void dma_map_wr (int32 pa, int32 val, int32 lnt)
|
|
{
|
|
int32 rg = (pa - DMABASE);
|
|
WriteL (ka_mapbase + rg, val);
|
|
}
|
|
|
|
int32 sccr_rd (int32 pa)
|
|
{
|
|
return SCCR & SCCR_RD;
|
|
}
|
|
|
|
void sccr_wr (int32 pa, int32 val, int32 lnt)
|
|
{
|
|
if (lnt < L_LONG) { /* byte or word? */
|
|
int32 sc = (pa & 3) << 3; /* merge */
|
|
int32 mask = (lnt == L_WORD)? 0xFFFF: 0xFF;
|
|
SCCR = (((val & mask) << sc) | (SCCR & ~(mask << sc))) & SCCR_WR;
|
|
}
|
|
else SCCR = val & SCCR_WR;
|
|
}
|
|
|
|
int32 memrg_rd (int32 pa)
|
|
{
|
|
int32 rg = (pa - 0x20101800) >> 2;
|
|
|
|
switch (rg) {
|
|
|
|
case 0: /* MEMCNFG */
|
|
return mem_cnfg;
|
|
|
|
case 1: /* MEMSTAT */
|
|
return 0;
|
|
|
|
case 2: /* MEMCUR */
|
|
return 0;
|
|
|
|
case 3: /* MEMERR */
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void memrg_wr (int32 pa, int32 val, int32 lnt)
|
|
{
|
|
int32 rg = (pa - 0x20101800) >> 2;
|
|
|
|
switch (rg) {
|
|
|
|
case 0: /* MEMCNFG */
|
|
mem_cnfg = val;
|
|
break;
|
|
|
|
case 1: /* MEMSTAT - RO? */
|
|
break;
|
|
|
|
case 2: /* MEMCUR - RO? */
|
|
break;
|
|
|
|
case 3: /* MEMERR - RO? */
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
int32 null_rd (int32 pa)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void null_wr (int32 pa, int32 val, int32 lnt)
|
|
{
|
|
}
|
|
|
|
/* Read/write I/O register space
|
|
|
|
These routines are the 'catch all' for address space map. Any
|
|
address that doesn't explicitly belong to memory, I/O, or ROM
|
|
is given to these routines for processing.
|
|
*/
|
|
|
|
struct reglink { /* register linkage */
|
|
uint32 low; /* low addr */
|
|
uint32 high; /* high addr */
|
|
int32 (*read)(int32 pa); /* read routine */
|
|
void (*write)(int32 pa, int32 val, int32 lnt); /* write routine */
|
|
};
|
|
|
|
struct reglink regtable[] = {
|
|
{ DMABASE, DMABASE+DMASIZE, &dma_map_rd, &dma_map_wr },
|
|
{ 0x200D0000, 0x200D4000, &isdn_rd, &isdn_wr }, /* ISDN/audio */
|
|
{ XSBASE, XSBASE+XSSIZE, &xs_rd, &xs_wr },
|
|
{ DZBASE, DZBASE+DZSIZE, &dz_rd, dz_wr }, /* needs extra register */
|
|
{ RZBASE, RZBASE+RZSIZE, &rz_rd, rz_wr },
|
|
{ ORBASE, ORBASE+ORSIZE, &or_rd, NULL },
|
|
{ NARBASE, NARBASE+NARSIZE, &nar_rd, NULL },
|
|
{ CFGBASE, CFGBASE+CFGSIZE, &cfg_rd, &ioreset_wr },
|
|
{ 0x20200000, 0x20220000, &invfl_rd, &invfl_wr }, /* Invalidate filter */
|
|
{ 0x23000000, 0x23000004, &sccr_rd, &sccr_wr },
|
|
{ 0x36800000, 0x36800004, &null_rd, &null_wr }, /* Turbo CSR */
|
|
{ 0x08000000, 0x08040000, &cache2ds_rd, &cache2ds_wr }, /* Cache second data store */
|
|
{ 0x22000000, 0x22040000, &cache2ts_rd, &cache2ts_wr }, /* Cache second tag store - should be at 0x2D000000? */
|
|
{ 0x20101800, 0x20101810, &memrg_rd, &memrg_wr },
|
|
{ 0x20101A00, 0x20102000, NULL, &null_wr }, /* invalidate single - check size */
|
|
{ ROMBASE, ROMBASE+ROMSIZE, &rom_rd, NULL },
|
|
{ NVRBASE, NVRBASE+NVRSIZE, &nvr_rd, &nvr_wr },
|
|
{ KABASE, KABASE+KASIZE, &ka_rd, &ka_wr }, /* needs extending */
|
|
{ 0, 0, NULL, NULL }
|
|
};
|
|
|
|
/* ReadReg - read register space
|
|
|
|
Inputs:
|
|
pa = physical address
|
|
lnt = length (BWLQ) - ignored
|
|
Output:
|
|
longword of data
|
|
*/
|
|
|
|
int32 ReadReg (uint32 pa, int32 lnt)
|
|
{
|
|
struct reglink *p;
|
|
|
|
for (p = ®table[0]; p->low != 0; p++) {
|
|
if ((pa >= p->low) && (pa < p->high) && p->read)
|
|
return p->read (pa);
|
|
}
|
|
return 0xFFFFFFFF;
|
|
}
|
|
|
|
/* ReadRegU - read register space, unaligned
|
|
|
|
Inputs:
|
|
pa = physical address
|
|
lnt = length in bytes (1, 2, or 3)
|
|
Output:
|
|
returned data, not shifted
|
|
*/
|
|
|
|
int32 ReadRegU (uint32 pa, int32 lnt)
|
|
{
|
|
return ReadReg (pa & ~03, L_LONG);
|
|
}
|
|
|
|
/* WriteReg - write register space
|
|
|
|
Inputs:
|
|
pa = physical address
|
|
val = data to write, right justified in 32b longword
|
|
lnt = length (BWLQ)
|
|
Outputs:
|
|
none
|
|
*/
|
|
|
|
void WriteReg (uint32 pa, int32 val, int32 lnt)
|
|
{
|
|
struct reglink *p;
|
|
|
|
for (p = ®table[0]; p->low != 0; p++) {
|
|
if ((pa >= p->low) && (pa < p->high) && p->write) {
|
|
p->write (pa, val, lnt);
|
|
return;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* WriteRegU - write register space, unaligned
|
|
|
|
Inputs:
|
|
pa = physical address
|
|
val = data to write, right justified in 32b longword
|
|
lnt = length (1, 2, or 3)
|
|
Outputs:
|
|
none
|
|
*/
|
|
|
|
void WriteRegU (uint32 pa, int32 val, int32 lnt)
|
|
{
|
|
int32 sc = (pa & 03) << 3;
|
|
int32 dat = ReadReg (pa & ~03, L_LONG);
|
|
|
|
dat = (dat & ~(insert[lnt] << sc)) | ((val & insert[lnt]) << sc);
|
|
WriteReg (pa & ~03, dat, L_LONG);
|
|
return;
|
|
}
|
|
|
|
/* KA460 registers */
|
|
|
|
int32 ka_rd (int32 pa)
|
|
{
|
|
int32 rg = (pa - KABASE) >> 2;
|
|
|
|
switch (rg) {
|
|
|
|
case 0: /* halt code */
|
|
return ka_hltcod;
|
|
|
|
case 2: /* DMA map base */
|
|
return ka_mapbase;
|
|
|
|
case 3: /* int req, int mask */
|
|
return ((int_req[0] & BMASK) << 24) | \
|
|
(int_mask & BMASK);
|
|
|
|
case 5: /* parity ctl */
|
|
/* Schip revision in bits (7:4) */
|
|
return ka_parctl & PARCTL_RD;
|
|
|
|
case 7: /* diag timer */
|
|
tmr_tir = (tmr_tir + 5) & 0xFFFF;
|
|
return (tmr_tir << 16) | tmr_tir;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ka_wr (int32 pa, int32 val, int32 lnt)
|
|
{
|
|
int32 rg = (pa - KABASE) >> 2;
|
|
|
|
switch (rg) {
|
|
|
|
case 0: /* halt code */
|
|
ka_hltcod = val;
|
|
break;
|
|
|
|
case 2: /* DMA map base */
|
|
ka_mapbase = val;
|
|
break;
|
|
|
|
case 3:
|
|
switch (pa & 3) {
|
|
case 0: /* int mask */
|
|
int_mask = val & BMASK;
|
|
SET_IRQL;
|
|
break;
|
|
|
|
case 1:
|
|
case 2:
|
|
break;
|
|
|
|
case 3: /* int clear */
|
|
int_req[0] = int_req[0] & ~(val & BMASK);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 4: /* LED */
|
|
ka_led = val;
|
|
break;
|
|
|
|
case 5: /* parity ctl */
|
|
ka_parctl = (ka_parctl & ~PARCTL_WR) | (val & PARCTL_WR);
|
|
break;
|
|
|
|
case 7: /* diag timer */
|
|
tmr_tir = (val >> 16);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Machine check */
|
|
|
|
int32 machine_check (int32 p1, int32 opc, int32 cc, int32 delta)
|
|
{
|
|
int32 p2, acc;
|
|
|
|
if (in_ie) {
|
|
in_ie = 0;
|
|
return con_halt (CON_DBLMCK, cc); /* double machine check */
|
|
}
|
|
if (p1 & 0x80) /* mref? set v/p */
|
|
p1 = p1 + mchk_ref;
|
|
p2 = mchk_va + 4; /* save vap */
|
|
cc = intexc (SCB_MCHK, cc, 0, IE_SVE); /* take exception */
|
|
acc = ACC_MASK (KERN); /* in kernel mode */
|
|
in_ie = 1;
|
|
SP = SP - 28; /* push 7 words */
|
|
Write (SP, 24, L_LONG, WA); /* # bytes */
|
|
Write (SP + 4, p1, L_LONG, WA); /* mcheck type */
|
|
Write (SP + 8, p2, L_LONG, WA); /* address */
|
|
Write (SP + 12, 0, L_LONG, WA); /* VIBA */
|
|
Write (SP + 16, 0, L_LONG, WA); /* ICCS..SISR */
|
|
Write (SP + 20, 0, L_LONG, WA); /* state */
|
|
Write (SP + 24, 0, L_LONG, WA); /* SC */
|
|
in_ie = 0;
|
|
return cc;
|
|
}
|
|
|
|
/* Console entry */
|
|
|
|
int32 con_halt (int32 code, int32 cc)
|
|
{
|
|
int32 temp;
|
|
|
|
conisp = IS; /* save ISP */
|
|
conpc = PC; /* save PC */
|
|
conpsl = ((PSL | cc) & 0xFFFF00FF) | code; /* PSL, param */
|
|
temp = (PSL >> PSL_V_CUR) & 0x7; /* get is'cur */
|
|
if (temp > 4) /* invalid? */
|
|
conpsl = conpsl | CON_BADPSL;
|
|
else STK[temp] = SP; /* save stack */
|
|
if (mapen) /* mapping on? */
|
|
conpsl = conpsl | CON_MAPON;
|
|
mapen = 0; /* turn off map */
|
|
SP = IS; /* set SP from IS */
|
|
PSL = PSL_IS | PSL_IPL1F; /* PSL = 41F0000 */
|
|
JUMP (ROMBASE); /* PC = 20040000 */
|
|
return 0; /* new cc = 0 */
|
|
}
|
|
|
|
|
|
/* Special boot command - linked into SCP by initial reset
|
|
|
|
Syntax: BOOT {CPU}
|
|
|
|
*/
|
|
|
|
t_stat vax460_boot (int32 flag, CONST char *ptr)
|
|
{
|
|
char gbuf[CBUFSIZE];
|
|
|
|
get_glyph (ptr, gbuf, 0); /* get glyph */
|
|
if (gbuf[0] && strcmp (gbuf, "CPU"))
|
|
return SCPE_ARG; /* Only can specify CPU device */
|
|
return run_cmd (flag, "CPU");
|
|
}
|
|
|
|
|
|
/* Bootstrap */
|
|
|
|
t_stat cpu_boot (int32 unitno, DEVICE *dptr)
|
|
{
|
|
t_stat r;
|
|
|
|
PC = ROMBASE;
|
|
PSL = PSL_IS | PSL_IPL1F;
|
|
conisp = 0;
|
|
conpc = 0;
|
|
conpsl = PSL_IS | PSL_IPL1F | CON_PWRUP;
|
|
if (rom == NULL)
|
|
return SCPE_IERR;
|
|
if (*rom == 0) { /* no boot? */
|
|
r = cpu_load_bootcode (BOOT_CODE_FILENAME, BOOT_CODE_ARRAY, BOOT_CODE_SIZE, TRUE, 0);
|
|
if (r != SCPE_OK)
|
|
return r;
|
|
}
|
|
return SCPE_OK;
|
|
}
|
|
|
|
/* SYSD reset */
|
|
|
|
t_stat sysd_reset (DEVICE *dptr)
|
|
{
|
|
ka_mapbase = 0;
|
|
ka_cfgtst = CFGT_L3C;
|
|
ka_led = 0;
|
|
ka_parctl = 0xF0;
|
|
tmr_tir = 0;
|
|
|
|
if (isdn == NULL) /* dummy mem for ISDN */
|
|
isdn = (uint32 *) calloc (0x4000 >> 2, sizeof (uint32));
|
|
if (isdn == NULL)
|
|
return SCPE_MEM;
|
|
if (invfl == NULL) /* dummy mem for invalidate filter */
|
|
invfl = (uint32 *) calloc (0x8000, sizeof (uint32));
|
|
if (invfl == NULL)
|
|
return SCPE_MEM;
|
|
if (cache2ds == NULL) /* dummy mem for cache data store */
|
|
cache2ds = (uint32 *) calloc (0x10002, sizeof (uint32));
|
|
if (cache2ds == NULL)
|
|
return SCPE_MEM;
|
|
if (cache2ts == NULL) /* dummy mem for cache tag store */
|
|
cache2ts = (uint32 *) calloc (0x10000, sizeof (uint32));
|
|
if (cache2ts == NULL)
|
|
return SCPE_MEM;
|
|
|
|
sim_vm_cmd = vax460_cmd;
|
|
|
|
return SCPE_OK;
|
|
}
|
|
|
|
const char *sysd_description (DEVICE *dptr)
|
|
{
|
|
return "system devices";
|
|
}
|
|
|
|
t_stat auto_config (const char *name, int32 nctrl)
|
|
{
|
|
return SCPE_OK;
|
|
}
|
|
|
|
t_stat build_dib_tab (void)
|
|
{
|
|
return SCPE_OK;
|
|
}
|
|
|
|
t_stat cpu_set_model (UNIT *uptr, int32 val, CONST char *cptr, void *desc)
|
|
{
|
|
char gbuf[CBUFSIZE];
|
|
|
|
if ((cptr == NULL) || (!*cptr))
|
|
return SCPE_ARG;
|
|
cptr = get_glyph (cptr, gbuf, 0);
|
|
if (MATCH_CMD(gbuf, "MICROVAX") == 0) {
|
|
sys_model = 0;
|
|
#if defined(USE_SIM_VIDEO) && defined(HAVE_LIBSDL)
|
|
lk_dev.flags = lk_dev.flags | DEV_DIS; /* disable keyboard */
|
|
vs_dev.flags = vs_dev.flags | DEV_DIS; /* disable mouse */
|
|
#endif
|
|
strcpy (sim_name, "MicroVAX 3100-80 (KA47)");
|
|
reset_all (0); /* reset everything */
|
|
}
|
|
#if defined (VAX_46) || defined (VAX_48)
|
|
else if (MATCH_CMD(gbuf, "VAXSTATION") == 0) {
|
|
#if defined(USE_SIM_VIDEO) && defined(HAVE_LIBSDL)
|
|
sys_model = 1;
|
|
lk_dev.flags = lk_dev.flags & ~DEV_DIS; /* enable keyboard */
|
|
vs_dev.flags = vs_dev.flags & ~DEV_DIS; /* enable mouse */
|
|
#if defined (VAX_46)
|
|
strcpy (sim_name, "VAXstation 4000-60 (KA46)");
|
|
#else /* VAX_48 */
|
|
strcpy (sim_name, "VAXstation 4000-VLC (KA48)");
|
|
#endif
|
|
reset_all (0); /* reset everything */
|
|
#else
|
|
return sim_messagef (SCPE_ARG, "Simulator built without Graphic Device Support\n");
|
|
#endif
|
|
}
|
|
#endif
|
|
else
|
|
return SCPE_ARG;
|
|
return SCPE_OK;
|
|
}
|
|
|
|
t_stat cpu_print_model (FILE *st)
|
|
{
|
|
fprintf (st, "%s", sim_name);
|
|
#if defined (VAX_46)
|
|
fprintf (st, "VAXstation 4000-60 (KA46)");
|
|
#elif defined (VAX_47)
|
|
fprintf (st, "MicroVAX 3100-80 (KA47)");
|
|
#elif defined (VAX_48)
|
|
fprintf (st, "VAXstation 4000-VLC (KA48)");
|
|
#endif
|
|
return SCPE_OK;
|
|
}
|
|
|
|
t_stat cpu_model_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr)
|
|
{
|
|
fprintf (st, "Initial memory size is 16MB.\n\n");
|
|
fprintf (st, "The simulator is booted with the BOOT command:\n\n");
|
|
fprintf (st, " sim> BOOT\n\n");
|
|
return SCPE_OK;
|
|
}
|