1999/0819/pc/devastar.c (diff list | history)

1994/1106/sys/src/9/pc/devastar.c:10,20 – 1994/1107/sys/src/9/pc/devastar.c:10,20 (short | long)
Still writing driver. rsc Fri Mar 4 12:44:25 2005
1994/1106		#include "../port/netif.h" /* * Stargate's Avanstar serial board. There are ISA, EISA, microchannel versions. * At the moment we only handle the ISA one.
1994/1107		* Stargate's Avanstar serial board. There are ISA, EISA, microchannel * versions. We only handle the ISA one.
1994/1106		*/ typedef struct Astar Astar; typedef struct Astarport Astarchan;
1994/1107		typedef struct Astarchan Astarchan;
1994/1106		enum {
1994/1106/sys/src/9/pc/devastar.c:24,42 – 1994/1107/sys/src/9/pc/devastar.c:24,53
1994/1106		ISAid1= 0x13, ISActl1= 1, /* board control */ ISAien= 1<<7, /* interrupt enable */ ISAirqm= 4, /* shift for 3 bit irq code */
1994/1107		ISAirq= 7<<4, /* mask for irq code */
1994/1106		ISAdl= 1<<1, /* download bit (1 == download) */ ISApr= 1<<0, /* program ready */ ISActl2= 2, /* board control */ ISA186ien= 1<<7, /* I186 irq enable bit state */ ISA186idata= 1<<6, /* I186 irq data bit state */ ISAmemen= 1<<4, /* enable memory to respond to ISA cycles */ ISAmembank= 0, /* shift for 4 bit memory bank */ ISAmemaddr= 3, /* bits 14-19 of the boards mem address */
1994/1107		ISAmen= 1<<4, /* enable memory to respond to ISA cycles */ ISAmbank= 0, /* shift for 4 bit memory bank */ ISAmaddr= 3, /* bits 14-19 of the boards mem address */
1994/1106		ISAstat1= 4, /* board status (1 bit per channel) */ ISAstat2= 5, /* board status (1 bit per channel) */
1994/1107		Maxcards= 3,
1994/1106		};
1994/1107		/* IRQ codes */ static int isairqcode[16] = { -1, -1, -1, 0<<4, 1<<4, 2<<4, -1, -1, -1, 3<<4, 4<<4, 5<<4, 6<<4, -1, -1, 7<<4, };
1994/1106		/* control program global control block */ typedef struct GCB GCB; struct GCB
1994/1106/sys/src/9/pc/devastar.c:59,64 – 1994/1107/sys/src/9/pc/devastar.c:70,107
1994/1106		ushort cmdserv; /* channel command service request 'X' */ };
1994/1107		enum { /* GCB.cmd commands/codes */ Greadycmd= 0, Gdiagcmd= 1, Gresetcmd= 2, /* GCB.status values */ Gready= 0, Gstopped= 1, Gramerr= 2, Gbadcmd= 3, Gbusy= 4, /* GCB.type values */ Gx00m= 0x6, G100e= 0xA, Gx00i= 0xC, /* GCB.status2 bits */ Ghas232= (1<<0), Ghas422= (1<<1), Ghasmodems= (1<<2), Ghasrj11s= (1<<7), Ghasring= (1<<8), Ghasdcd= (1<<9), Ghasdtr= (1<<10), Ghasdsr= (1<<11), Ghascts= (1<<12), Ghasrts= (1<<13), };
1994/1106		/* control program channel control block */ typedef struct CCB CCB; struct CCB
1994/1106/sys/src/9/pc/devastar.c:65,76 – 1994/1107/sys/src/9/pc/devastar.c:108,119
1994/1106		{ ushort baud; /* baud rate */ ushort format; /* data format */ ushort line; /* line protocol */
1994/1107		ushort proto; /* line protocol */
1994/1106		ushort insize; /* input buffer size */ ushort outsize; /* output buffer size */ ushort intrigger; /* input buffer trigger rate */ ushort outlow; /* output buffer low water mark */ ushort xon; /* xon characters */
1994/1107		char xon[2]; /* xon characters */
1994/1106		ushort inhigh; /* input buffer high water mark */ ushort inlow; /* input buffer low water mark */ ushort cmd; /* channel command */
1994/1106/sys/src/9/pc/devastar.c:89,103 – 1994/1107/sys/src/9/pc/devastar.c:132,221
1994/1106		ushort mstat; /* modem status */ ushort bstat; /* blocking status */ ushort rflag; /* character received flag */ ushort xoff; /* xoff characters */
1994/1107		char xoff[2]; /* xoff characters */
1994/1106		ushort status2; uchort strip; /* strip/error characters */
1994/1107		char strip[2]; /* strip/error characters */
1994/1106		};
1994/1107		enum { /* special baud rate codes for CCB.baud */ Cb76800= 0xff00, Cb115200= 0xff01, /* CCB.format fields */ C5bit= 0<<0, /* data bits */ C6bit= 0<<1, C7bit= 0<<2, C8bit= 0<<3, C1stop= 0<<2, /* stop bits */ C2stop= 1<<2, Cnopar= 0<<3, /* parity */ Coddpar= 1<<3, Cevenpar= 3<<3, Cmarkpar= 5<<3, Cspacepar= 7<<3, Cnormal= 0<<6, /* normal mode */ Cecho= 1<<6, /* echo mode */ Clloop= 2<<6, /* local loopback */ Crloop= 3<<6, /* remote loopback */ /* CCB.proto fields */ Cobeyxon= 1<<0, /* obey received xoff/xon controls */ Canyxon= 1<<1, /* any rcvd character restarts xmit */ Cgenxon= 1<<2, /* generate xoff/xon controls */ Cobeycts= 1<<3, /* obey hardware flow ctl */ Cgendtr= 1<<4, /* dtr off when uart rcvr full */ C½duplex= 1<<5, /* rts off while xmitting */ Cgenrts= 1<<6, /* generate hardware flow ctl */ Cmctl= 1<<7, /* direct modem control via CCB.mctl */ Cstrip= 1<<12, /* to strip out characters */ Ceia422= 1<<13, /* to select eia 422 lines */ /* CCB.cmd fields */ Cconfall= 1<<0, /* configure channel and UART */ Cconfchan= 1<<1, /* configure just channel */ Cflushin= 1<<2, /* flush input buffer */ Cflushout= 1<<3, /* flush output buffer */ Crcvena= 1<<4, /* enable receiver */ Crcvdis= 1<<5, /* disable receiver */ Cxmtena= 1<<6, /* enable transmitter */ Cxmtdis= 1<<7, /* disable transmitter */ Cmreset= 1<<9, /* reset modem */ /* CCB.errstat fields */ Coverrun= 1<<0, Cparity= 1<<1, Cframing= 1<<2, Cbreak= 1<<3, /* CCB.mctl fields */ Cdtrctl= 1<<0, Crtsctl= 1<<1, Cbreakctl= 1<<4 /* CCB.mstat fields */ Cctsstat= 1<<0, Cdsrstat= 1<<1, Cristat= 1<<2, Cdcdstat= 1<<3, /* CCB.bstat fields */ Cbrcvoff= 1<<0, Cbxmtoff= 1<<1, Clbxoff= 1<<2, /* transmitter blocked by XOFF */ Clbcts= 1<<3, /* transmitter blocked by CTS */ Crbxoff= 1<<4, /* remote blocked by xoff */ Crbrts= 1<<4, /* remote blocked by rts */ };
1994/1106		/* host per controller info */ struct Astar { int port; /* number of first port */
1994/1107		ISAConf; int id; /* from plan9.ini */ int ramsize; /* 16k or 256k */
1994/1106		GCB *gbc; /* board comm area */ Astarchan *c; /* channels */ };
1994/1106/sys/src/9/pc/devastar.c:107,114 – 1994/1107/sys/src/9/pc/devastar.c:225,234
1994/1106		{ QLock;
1994/1107		CCB *ccb; /* control block */
1994/1106		/* buffers */ int (*putc)(Queue*, int);
1994/1107
1994/1106		Queue *iq; Queue *oq;
1994/1106/sys/src/9/pc/devastar.c:123,145 – 1994/1107/sys/src/9/pc/devastar.c:243,286
1994/1106		uchar *oe; }; /* * Stargate's Avanstar serial port cards. Currently only the ISA version * is supported. */
1994/1107		Astar *a[Maxcard]; int astarsetup(Astar*);
1994/1106		void avanstarreset(void)
1994/1107		astarreset(void)
1994/1106		{ int i;
1994/1107		Astar *a;
1994/1106		Dirtab *dp; for(i = 0; i < Maxcard; i++){ sc = scard[i] = xalloc(sizeof(Scard)); if(isaconfig("serial", i, sc) == 0){ xfree(sc);
1994/1107		a = astar[i] = xalloc(sizeof(Astar)); if(isaconfig("serial", i, &a) == 0){ xfree(a); astar[i] = 0;
1994/1106		break; }
1994/1107		if(strcmp(a->type, "a100i") == 0 || strcmp(a->type,"A100I") == 0) a->ramsize = 16*1024; else if(strcmp(a->type, "a200i") == 0 || strcmp(a->type,"A200I") == 0) a->ramsize = 256*1024; else continue; if(a->mem == 0) a->mem = 0xD0000; if(a->irq == 0) a->irq = 15; a->id = i; if(astarsetup(a) < 0){ xfree(a); astar[i] = 0; continue; } }
1994/1106		ndir = 3*nuart; ns16552dir = xalloc(ndir * sizeof(Dirtab)); dp = ns16552dir;
1994/1106/sys/src/9/pc/devastar.c:158,161 – 1994/1107/sys/src/9/pc/devastar.c:299,360
1994/1106		dp->perm = 0444; dp++; }
1994/1107		} void astarinit(void) { } int isaport[] = { 0x200, 0x208, 0x300, 0x308, 0x600, 0x608, 0x700, 0x708, 0 }; int isax00i(int port) { uchar c, c1; if(port < 0) return 0; c = inb(port + ISAid); c1 = inb(port + ISAid); return (c == ISAid0 && c1 == ISAid1) || (c == ISAid1 && c1 == ISAid0)); } int astarsetup(Astar *a) { int i, j, found; /* see if the card exists */ found = 0; if(a->port == 0) for(i = 0; isaport[i]; i++){ a->port = isaport[i]; found = isax00i(isaport[i]); if(found){ isaport[i] = -1; break; } } else found = isax00i(a->port); if(!found){ print("avanstar %d not found\n", a->id); return -1; } /* set memory address */ outb(a->port + ISAmaddr, (a->mem>>12) & 0xfc); a->gcb = KZERO | a->mem; /* set interrupt level */ if(isairqcode(a->irq) == -1){ print("Avanstar %d bad irq %d\n", a->id, a->irq); return -1; } c = inb(a->port + ISActl1) & ~ISAirq; outb(a->port + ISActl1, c | isairqcode(a->irq));
1994/1106		}
1994/1107/sys/src/9/pc/devastar.c:228,234 – 1994/1108/sys/src/9/pc/devastar.c:228,233 (short | long)
Change default memory location. rsc Fri Mar 4 12:44:25 2005
1994/1107		CCB *ccb; /* control block */
1994/1106		/* buffers */
1994/1107
1994/1106		Queue *iq; Queue *oq;
1994/1107/sys/src/9/pc/devastar.c:268,275 – 1994/1108/sys/src/9/pc/devastar.c:267,275
1994/1107		a->ramsize = 256*1024; else continue;
1994/1108
1994/1107		if(a->mem == 0) a->mem = 0xD0000;
1994/1108		a->mem = 0xD4000;
1994/1107		if(a->irq == 0) a->irq = 15; a->id = i;
1994/1108/sys/src/9/pc/devastar.c:225,230 – 1994/1109/sys/src/9/pc/devastar.c:225,231 (short | long)
1994/1106		{ QLock;
1994/1109		Astar *a; /* controller */
1994/1107		CCB *ccb; /* control block */
1994/1106		/* buffers */
1994/1108/sys/src/9/pc/devastar.c:242,250 – 1994/1109/sys/src/9/pc/devastar.c:243,252
1994/1106		uchar *oe; };
1994/1107		Astar *a[Maxcard];
1994/1109		Astar *astar[Maxcard]; int nastar;
1994/1107		int astarsetup(Astar*);
1994/1109		static int astarsetup(Astar*);
1994/1107
1994/1106		void
1994/1107		astarreset(void)
1994/1108/sys/src/9/pc/devastar.c:254,263 – 1994/1109/sys/src/9/pc/devastar.c:256,265
1994/1106		Dirtab *dp; for(i = 0; i < Maxcard; i++){
1994/1107		a = astar[i] = xalloc(sizeof(Astar));
1994/1109		a = astar[nastar] = xalloc(sizeof(Astar));
1994/1107		if(isaconfig("serial", i, &a) == 0){ xfree(a); astar[i] = 0;
1994/1109		astar[nastar] = 0;
1994/1106		break; }
1994/1108/sys/src/9/pc/devastar.c:276,284 – 1994/1109/sys/src/9/pc/devastar.c:278,287
1994/1107		if(astarsetup(a) < 0){ xfree(a); astar[i] = 0;
1994/1109		astar[nastar] = 0;
1994/1107		continue; }
1994/1109		nastar++;
1994/1107		}
1994/1106		ndir = 3*nuart;
1994/1108/sys/src/9/pc/devastar.c:306,316 – 1994/1109/sys/src/9/pc/devastar.c:309,319
1994/1107		{ } int isaport[] = { 0x200, 0x208, 0x300, 0x308, 0x600, 0x608, 0x700, 0x708, 0 };
1994/1109		/* isa ports an ax00i can appear at */ int isaport[] = { 0x200, 0x208, 0x300, 0x308, 0x600, 0x608, 0x700, 0x708, 0 };
1994/1107		int isax00i(int port)
1994/1109		static int astarprobe(int port)
1994/1107		{ uchar c, c1;
1994/1108/sys/src/9/pc/devastar.c:323,329 – 1994/1109/sys/src/9/pc/devastar.c:326,332
1994/1107		|| (c == ISAid1 && c1 == ISAid0)); } int
1994/1109		static int
1994/1107		astarsetup(Astar *a) { int i, j, found;
1994/1108/sys/src/9/pc/devastar.c:333,339 – 1994/1109/sys/src/9/pc/devastar.c:336,342
1994/1107		if(a->port == 0) for(i = 0; isaport[i]; i++){ a->port = isaport[i]; found = isax00i(isaport[i]);
1994/1109		found = astarprobe(isaport[i]);
1994/1107		if(found){ isaport[i] = -1; break;
1994/1108/sys/src/9/pc/devastar.c:357,360 – 1994/1109/sys/src/9/pc/devastar.c:360,365
1994/1107		} c = inb(a->port + ISActl1) & ~ISAirq; outb(a->port + ISActl1, c | isairqcode(a->irq));
1994/1109		return 0;
1994/1106		}
1994/1109/sys/src/9/pc/devastar.c:7,13 – 1994/1111/sys/src/9/pc/devastar.c:7,12 (short | long)
1994/1106		#include "../port/error.h" #include "devtab.h" #include "../port/netif.h" /*
1994/1107		* Stargate's Avanstar serial board. There are ISA, EISA, microchannel
1994/1109/sys/src/9/pc/devastar.c:215,223 – 1994/1111/sys/src/9/pc/devastar.c:214,223
1994/1106		{
1994/1107		ISAConf; int id; /* from plan9.ini */
1994/1111		int nchan; /* number of channels */ Astarchan *c; /* channels */
1994/1107		int ramsize; /* 16k or 256k */
1994/1106		GCB *gbc; /* board comm area */ Astarchan *c; /* channels */ }; /* host per channel info */
1994/1109/sys/src/9/pc/devastar.c:227,253 – 1994/1111/sys/src/9/pc/devastar.c:227,315
1994/1106
1994/1109		Astar *a; /* controller */
1994/1107		CCB *ccb; /* control block */
1994/1111		int perm;
1994/1107
1994/1106		/* buffers */ Queue *iq; Queue *oq;                                   /* staging areas to avoid some of the per character costs */ uchar istage[Stagesize]; uchar *ip; uchar *ie;                  uchar ostage[Stagesize]; uchar *op; uchar *oe; };
1994/1109		Astar *astar[Maxcard]; int nastar;
1994/1111		static int nastar;
1994/1107
1994/1111		enum { Qmem= 0, Qdata, Qctl, Qstat, }; #define TYPE(x) ((x)&0xff) #define BOARD(x) ((((x)&~CHDIR)>>16)&0xff) #define CHAN(x) ((((x)&~CHDIR)>>8)&0xff) #define QID(b,c,t) (((b)<<16)|((c)<<8)|(t))
1994/1109		static int astarsetup(Astar*);
1994/1107
1994/1111		int devgen(Chan *c, Dirtab *tab, int ntab, int i, Dir *db) { int dev, sofar, ch, t; USED(tab, ntab); sofar = 0; for(dev = 0; dev < nstar; dev++){ if(sofar == i){ sprint(db->name, "atar%dmem", astar[dev].id); db->qid = QID(dev, 0, Qmem); db->mode = 0660; break; } if(i < sofar + 3*astar[dev].nchan){ i -= sofar; ch = i/3; t = i%3; switch(t){ case 0: sprint(db->name, "eia%d%2.2d", dev, ch); db->mode = astar[dev]->c[ch].perm; db->qid = QID(dev, 0, Qdata); break; case 1: sprint(db->name, "eia%d%2.2dctl", dev, ch); db->mode = astar[dev]->c[ch].perm; db->qid = QID(dev, 0, Qctl); break; case 2: sprint(db->name, "eia%d%2.2dstat", dev, ch); db->mode = 0444; db->qid = QID(dev, 0, Qstat); break; break; } sofar += 1 + 3*astar[dev].nchan; } if(j == nstar) return -1; db->atime = seconds(); db->mtime = kerndate; db->hlength = 0; db->length = length; memmove(db->uid, eve, NAMELEN); memmove(db->gid, eve, NAMELEN); db->type = devchar[c->type]; db->dev = c->dev; if(c->flag&CMSG) db->mode |= CHMOUNT; return 1; }
1994/1106		void
1994/1107		astarreset(void)
1994/1106		{
1994/1109/sys/src/9/pc/devastar.c:283,314 – 1994/1111/sys/src/9/pc/devastar.c:345,352
1994/1107		}
1994/1109		nastar++;
1994/1107		}
1994/1106		ndir = 3*nuart; ns16552dir = xalloc(ndir * sizeof(Dirtab)); dp = ns16552dir; for(i = 0; i < nuart; i++){ /* 3 directory entries per port */ sprint(dp->name, "eia%d", i); dp->qid.path = NETQID(i, Ndataqid); dp->perm = 0660; dp++; sprint(dp->name, "eia%dctl", i); dp->qid.path = NETQID(i, Nctlqid); dp->perm = 0660; dp++; sprint(dp->name, "eia%dstat", i); dp->qid.path = NETQID(i, Nstatqid); dp->perm = 0444; dp++; }
1994/1107		} void astarinit(void) { }
1994/1109		/* isa ports an ax00i can appear at */ int isaport[] = { 0x200, 0x208, 0x300, 0x308, 0x600, 0x608, 0x700, 0x708, 0 };
1994/1107
1994/1109/sys/src/9/pc/devastar.c:360,365 – 1994/1111/sys/src/9/pc/devastar.c:398,488
1994/1107		} c = inb(a->port + ISActl1) & ~ISAirq; outb(a->port + ISActl1, c | isairqcode(a->irq));
1994/1111		return 0; } void astarinit(void) { } Chan* astarattach(char *spec) { return devattach('g', spec); } Chan* astarclone(Chan *c, Chan *nc) { return devclone(c, nc); } int astarwalk(Chan *c, char *name) { return devwalk(c, name, 0, 0, astargen); } void astarstat(Chan *c, char *dp) { devstat(c, dp, 0, 0, astargen); } Chan* astaropen(Chan *c, int omode) { Uart *p; c = devopen(c, omode, 0, 0, astargen); return c; } void astarcreate(Chan *c, char *name, int omode, ulong perm) { USED(c, name, omode, perm); error(Eperm); } void astarclose(Chan *c) { USED(c); } long astarread(Chan *c, void *buf, long n, ulong offset) { Astar *a; if(c->qid.path & CHDIR) return devdirread(c, buf, n, 0, 0, astargen); switch(TYPE(c->qid.path)){ case Qmem: a = astar[ return qread(p->iq, buf, n); } return 0; } long astarwrite(Chan *c, void *buf, long n, ulong offset) { Uart *p; if(c->qid.path & CHDIR) error(Eperm); switch(TYPE(c->qid.path)){ case Qmem: return qread(p->iq, buf, n); }
1994/1109		return 0;
1994/1106		}
1994/1111/sys/src/9/pc/devastar.c:35,41 – 1994/1112/sys/src/9/pc/devastar.c:35,44 (short | long)
1994/1106		ISAstat1= 4, /* board status (1 bit per channel) */ ISAstat2= 5, /* board status (1 bit per channel) */
1994/1107		Maxcards= 3,
1994/1112		Maxcard= 8, Pramsize= 64*1024, /* size of program ram */ Footshift= 14, /* footprint of card mem in ISA space */ Footprint= 1<<Footshift,
1994/1106		};
1994/1107		/* IRQ codes */
1994/1111/sys/src/9/pc/devastar.c:191,197 – 1994/1112/sys/src/9/pc/devastar.c:194,200
1994/1107		/* CCB.mctl fields */ Cdtrctl= 1<<0, Crtsctl= 1<<1, Cbreakctl= 1<<4
1994/1112		Cbreakctl= 1<<4,
1994/1107		/* CCB.mstat fields */
1994/1111/sys/src/9/pc/devastar.c:212,223 – 1994/1112/sys/src/9/pc/devastar.c:215,230
1994/1106		/* host per controller info */ struct Astar {
1994/1112		QLock;
1994/1107		ISAConf; int id; /* from plan9.ini */
1994/1111		int nchan; /* number of channels */
1994/1112		Rendez r;
1994/1111		Astarchan *c; /* channels */
1994/1107		int ramsize; /* 16k or 256k */
1994/1106		GCB *gbc; /* board comm area */
1994/1112		char *addr; /* memory area */
1994/1106		}; /* host per channel info */
1994/1111/sys/src/9/pc/devastar.c:228,233 – 1994/1112/sys/src/9/pc/devastar.c:235,241
1994/1109		Astar *a; /* controller */
1994/1107		CCB *ccb; /* control block */
1994/1111		int perm;
1994/1112		int opens;
1994/1107
1994/1106		/* buffers */ Queue *iq;
1994/1111/sys/src/9/pc/devastar.c:240,245 – 1994/1112/sys/src/9/pc/devastar.c:248,254
1994/1111		enum { Qmem= 0,
1994/1112		Qbctl,
1994/1111		Qdata, Qctl, Qstat,
1994/1111/sys/src/9/pc/devastar.c:252,273 – 1994/1112/sys/src/9/pc/devastar.c:261,292
1994/1109		static int astarsetup(Astar*);
1994/1107
1994/1111		int devgen(Chan *c, Dirtab *tab, int ntab, int i, Dir *db)
1994/1112		astargen(Chan *c, Dirtab *tab, int ntab, int i, Dir *db)
1994/1111		{ int dev, sofar, ch, t;
1994/1112		extern ulong kerndate;
1994/1111		USED(tab, ntab); sofar = 0; for(dev = 0; dev < nstar; dev++){
1994/1112		for(dev = 0; dev < nastar; dev++){
1994/1111		if(sofar == i){ sprint(db->name, "atar%dmem", astar[dev].id); db->qid = QID(dev, 0, Qmem);
1994/1112		sprint(db->name, "atar%dmem", astar[dev]->id); db->qid.path = QID(dev, 0, Qmem);
1994/1111		db->mode = 0660; break; }
1994/1112		sofar++;
1994/1111		if(i < sofar + 3*astar[dev].nchan){
1994/1112		if(sofar == i){ sprint(db->name, "atar%dctl", astar[dev]->id); db->qid.path = QID(dev, 0, Qbctl); db->mode = 0660; break; } sofar++; if(i - sofar < 3*astar[dev]->nchan){
1994/1111		i -= sofar; ch = i/3; t = i%3;
1994/1111/sys/src/9/pc/devastar.c:275,305 – 1994/1112/sys/src/9/pc/devastar.c:294,324
1994/1111		case 0: sprint(db->name, "eia%d%2.2d", dev, ch); db->mode = astar[dev]->c[ch].perm; db->qid = QID(dev, 0, Qdata);
1994/1112		db->qid.path = QID(dev, 0, Qdata);
1994/1111		break; case 1: sprint(db->name, "eia%d%2.2dctl", dev, ch); db->mode = astar[dev]->c[ch].perm; db->qid = QID(dev, 0, Qctl);
1994/1112		db->qid.path = QID(dev, 0, Qctl);
1994/1111		break; case 2: sprint(db->name, "eia%d%2.2dstat", dev, ch); db->mode = 0444; db->qid = QID(dev, 0, Qstat);
1994/1112		db->qid.path = QID(dev, 0, Qstat);
1994/1111		break;
1994/1112		}
1994/1111		break; }                  sofar += 1 + 3*astar[dev].nchan;
1994/1112		sofar += 3*astar[dev]->nchan;
1994/1111		} if(j == nstar)
1994/1112		if(dev == nastar)
1994/1111		return -1; db->atime = seconds(); db->mtime = kerndate; db->hlength = 0; db->length = length;
1994/1112		db->length = 0; /* update ???? */
1994/1111		memmove(db->uid, eve, NAMELEN); memmove(db->gid, eve, NAMELEN); db->type = devchar[c->type];
1994/1111/sys/src/9/pc/devastar.c:315,325 – 1994/1112/sys/src/9/pc/devastar.c:334,343
1994/1106		{ int i;
1994/1107		Astar *a;
1994/1106		Dirtab *dp; for(i = 0; i < Maxcard; i++){
1994/1109		a = astar[nastar] = xalloc(sizeof(Astar));
1994/1107		if(isaconfig("serial", i, &a) == 0){
1994/1112		if(isaconfig("serial", i, a) == 0){
1994/1107		xfree(a);
1994/1109		astar[nastar] = 0;
1994/1106		break;
1994/1111/sys/src/9/pc/devastar.c:343,348 – 1994/1112/sys/src/9/pc/devastar.c:361,367
1994/1109		astar[nastar] = 0;
1994/1107		continue; }
1994/1112		print("serial%d avanstar addr %lux irq %d\n", i, a->addr, a->irq);
1994/1109		nastar++;
1994/1107		} }
1994/1111/sys/src/9/pc/devastar.c:361,373 – 1994/1112/sys/src/9/pc/devastar.c:380,392
1994/1107		c = inb(port + ISAid); c1 = inb(port + ISAid); return (c == ISAid0 && c1 == ISAid1) || (c == ISAid1 && c1 == ISAid0));
1994/1112		|| (c == ISAid1 && c1 == ISAid0);
1994/1107		}
1994/1109		static int
1994/1107		astarsetup(Astar *a) { int i, j, found;
1994/1112		int i, found;
1994/1107		/* see if the card exists */ found = 0;
1994/1111/sys/src/9/pc/devastar.c:381,387 – 1994/1112/sys/src/9/pc/devastar.c:400,406
1994/1107		} } else found = isax00i(a->port);
1994/1112		found = astarprobe(a->port);
1994/1107		if(!found){ print("avanstar %d not found\n", a->id); return -1;
1994/1111/sys/src/9/pc/devastar.c:389,403 – 1994/1112/sys/src/9/pc/devastar.c:408,421
1994/1107		/* set memory address */ outb(a->port + ISAmaddr, (a->mem>>12) & 0xfc); a->gcb = KZERO | a->mem;
1994/1112		a->gbc = (GCB*)(KZERO | a->mem); a->addr = (char*)(KZERO | a->mem);
1994/1107		/* set interrupt level */ if(isairqcode(a->irq) == -1){
1994/1112		if(isairqcode[a->irq] == -1){
1994/1107		print("Avanstar %d bad irq %d\n", a->id, a->irq); return -1; } c = inb(a->port + ISActl1) & ~ISAirq; outb(a->port + ISActl1, c | isairqcode(a->irq));
1994/1111		return 0; }
1994/1111/sys/src/9/pc/devastar.c:434,463 – 1994/1112/sys/src/9/pc/devastar.c:452,510
1994/1111		Chan* astaropen(Chan *c, int omode) { Uart *p;
1994/1112		Astar *a;
1994/1111		c = devopen(c, omode, 0, 0, astargen);
1994/1112		switch(TYPE(c->qid.path)){ case Qmem: case Qbctl: if(!iseve()) error(Eperm); break; }
1994/1111		return c; } void astarcreate(Chan *c, char *name, int omode, ulong perm) { USED(c, name, omode, perm); error(Eperm); }                  void astarclose(Chan *c) { USED(c);
1994/1112		Astar *a; int i; switch(TYPE(c->qid.path)){ case Qmem: a = astar[BOARD(c->qid.path)]; qlock(a); if(--a->opens == 0){ /* take board out of download mode and enable IRQ */ outb(a->port + ISActl1, ISAien|isairqcode[a->irq]); /* enable ISA access to first 16k */ outb(a->port + ISActl2, ISAmen|0); /* wait for program ready */ for(i = 0; i < 21; i++){ if(inb(a->port + ISActl1) & ISApr) break; tsleep(&r, return0, 0, 500); } if((inb(a->port + ISActl1) & ISApr) == 0) print("astar%d program not ready\n", a->id); } qunlock(a); break; }
1994/1111		} long astarread(Chan *c, void *buf, long n, ulong offset) {
1994/1112		int i;
1994/1111		Astar *a;
1994/1112		char *to, *from, *e; char status[128];
1994/1111		if(c->qid.path & CHDIR) return devdirread(c, buf, n, 0, 0, astargen);
1994/1111/sys/src/9/pc/devastar.c:464,471 – 1994/1112/sys/src/9/pc/devastar.c:511,556
1994/1111		switch(TYPE(c->qid.path)){ case Qmem: a = astar[ return qread(p->iq, buf, n);
1994/1112		a = astar[BOARD(c->qid.path)]; if(offset+n > Pramsize){ if(offset >= Pramsize) return 0; n = Pramsize - offset; } if(waserror()){ qunlock(a); nexterror(); } qlock(a); from = buf; while(n > 0){ /* map in right piece of memory */ outb(a->port + ISActl2, ISAmen|(offset>>Footshift)); i = offset%Footprint; to = a->addr + i; i = Footprint - i; if(i > n) i = n; /* byte at a time so endian doesn't matter */ for(e = from + i; from < e;) *to++ = *from++; n -= i; } qunlock(a); poperror(); break; case Qbctl: a = astar[BOARD(c->qid.path)]; sprint(status, "id %2.2ux%2.2ux ctl1 %2.2ux ctl2 %2.2ux maddr %2.2ux stat %2.2ux%2.2ux", inb(a->port+ISAid), inb(a->port+ISAid), inb(a->port+ISActl1), inb(a->port+ISActl2), inb(a->port+ISAmaddr), inb(a->port+ISAstat2), inb(a->port+ISAstat1)); n = readstr(offset, buf, n, status); break;
1994/1111		} return 0;
1994/1111/sys/src/9/pc/devastar.c:474,480 – 1994/1112/sys/src/9/pc/devastar.c:559,568
1994/1111		long astarwrite(Chan *c, void *buf, long n, ulong offset) { Uart *p;
1994/1112		Astar *a; char *to, *from, *e; int i; char cmsg[32];
1994/1111		if(c->qid.path & CHDIR) error(Eperm);
1994/1111/sys/src/9/pc/devastar.c:481,488 – 1994/1112/sys/src/9/pc/devastar.c:569,666
1994/1111		switch(TYPE(c->qid.path)){ case Qmem: return qread(p->iq, buf, n);
1994/1112		a = astar[BOARD(c->qid.path)]; if(offset+n > Pramsize){ if(offset >= Pramsize) return 0; n = Pramsize - offset; } if(waserror()){ qunlock(a); nexterror(); } qlock(a); to = buf; while(n > 0){ /* map in right piece of memory */ outb(a->port + ISActl2, ISAmen|(offset>>Footshift)); i = offset%Footprint; from = a->addr + i; i = Footprint - i; if(i > n) i = n; /* byte at a time so endian doesn't matter */ for(e = from + i; from < e;) *to++ = *from++; n -= i; } qunlock(a); poperror(); break; case Qbctl: if(n > sizeof cmsg) n = sizeof(cmsg) - 1; memmove(cmsg, buf, n); cmsg[n] = 0; if(waserror()){ qunlock(a); nexterror(); } qlock(a); if(strncmp(cmsg, "download", 8) == 0){ /* put board in download mode */ outb(a->port + ISActl1, ISAdl); /* enable ISA access to first 16k */ outb(a->port + ISActl2, ISAmen); } else if(strncmp(cmsg, "run", 3) == 0){ /* take board out of download mode and enable IRQ */ outb(a->port + ISActl1, ISAien|isairqcode[a->irq]); /* enable ISA access to first 16k */ outb(a->port + ISActl2, ISAmen); /* wait for control program to signal life */ for(i = 0; i < 21; i++){ if(inb(a->port + ISActl1) & ISApr) break; tsleep(&a->r, return0, 0, 500); } if((inb(a->port + ISActl1) & ISApr) == 0) print("astar%d program not ready\n", a->id); } else error(Ebadarg); qunlock(a); poperror(); break;
1994/1111		}
1994/1109		return 0;
1994/1112		} void astarcreate(Chan *c, char *name, int omode, ulong perm) { USED(c, name, omode, perm); error(Eperm); } void astarremove(Chan *c) { USED(c); error(Eperm); } void astarwstat(Chan *c, char *dp) { USED(c, dp); error(Eperm);
1994/1106		}
1994/1112/sys/src/9/pc/devastar.c:11,17 – 1994/1113/sys/src/9/pc/devastar.c:11,30 (short | long)
1994/1106		/*
1994/1107		* Stargate's Avanstar serial board. There are ISA, EISA, microchannel * versions. We only handle the ISA one.
1994/1113		* * At the expense of performance, I've tried to be careful about * endian-ness to make this convertable to other ISA bus machines. * However, xchngus() is in assembler and will have to be translated.
1994/1106		*/
1994/1113		#define LENDIAN 1 /* unsigned short little endian representation */ #ifdef LENDIAN #define LEUS(x) (x) #else #define LEUS(x) ( (((x)<<8)&0xff00) | (((x)>>8)&0xff) ) #endif LENDIAN
1994/1106		typedef struct Astar Astar;
1994/1107		typedef struct Astarchan Astarchan;
1994/1106
1994/1112/sys/src/9/pc/devastar.c:37,46 – 1994/1113/sys/src/9/pc/devastar.c:50,62
1994/1107
1994/1112		Maxcard= 8, Pramsize= 64*1024, /* size of program ram */ Footshift= 14, /* footprint of card mem in ISA space */ Footprint= 1<<Footshift,
1994/1113		Pageshift= 14, /* footprint of card mem in ISA space */ Pagesize= 1<<Pageshift, Pagemask= Pagesize-1,
1994/1106		};
1994/1113		#define APAGE(x) ((x)>>Pageshift)
1994/1107		/* IRQ codes */ static int isairqcode[16] = {
1994/1112/sys/src/9/pc/devastar.c:60,68 – 1994/1113/sys/src/9/pc/devastar.c:76,84
1994/1106		ushort avail; /* available buffer space */ ushort type; /* board type */ ushort cpvers; /* control program version */ ushort ccbc; /* control channel block count */ ushort ccbo; /* control channel block offset */ ushort ccbc; /* control channel block size */
1994/1113		ushort ccbn; /* control channel block count */ ushort ccboff; /* control channel block offset */ ushort ccbsz; /* control channel block size */
1994/1106		ushort cmd2; /* command word 2 */ ushort status2; /* status word 2 */ ushort errserv; /* comm error service request 'X' */
1994/1112/sys/src/9/pc/devastar.c:146,155 – 1994/1113/sys/src/9/pc/devastar.c:162,168
1994/1107		Cb115200= 0xff01, /* CCB.format fields */ C5bit= 0<<0, /* data bits */ C6bit= 0<<1, C7bit= 0<<2, C8bit= 0<<3,
1994/1113		Clenmask= 3<<0, /* data bits */
1994/1107		C1stop= 0<<2, /* stop bits */ C2stop= 1<<2, Cnopar= 0<<3, /* parity */
1994/1112/sys/src/9/pc/devastar.c:157,162 – 1994/1113/sys/src/9/pc/devastar.c:170,176
1994/1107		Cevenpar= 3<<3, Cmarkpar= 5<<3, Cspacepar= 7<<3,
1994/1113		Cparmask= 7<<3,
1994/1107		Cnormal= 0<<6, /* normal mode */ Cecho= 1<<6, /* echo mode */ Clloop= 2<<6, /* local loopback */
1994/1112/sys/src/9/pc/devastar.c:220,230 – 1994/1113/sys/src/9/pc/devastar.c:234,248
1994/1107		ISAConf; int id; /* from plan9.ini */
1994/1111		int nchan; /* number of channels */
1994/1112		Rendez r;
1994/1111		Astarchan *c; /* channels */
1994/1107		int ramsize; /* 16k or 256k */
1994/1106		GCB *gbc; /* board comm area */
1994/1112		char *addr; /* memory area */
1994/1113		int memsize; /* size of memory currently mapped */ int page; /* page currently mapped */ GCB *gbc; /* global board comm area */ uchar *addr; /* base of memory area */ int running; Rendez r; /* when waiting for board */
1994/1106		}; /* host per channel info */
1994/1112/sys/src/9/pc/devastar.c:233,239 – 1994/1113/sys/src/9/pc/devastar.c:251,257
1994/1106		QLock;
1994/1109		Astar *a; /* controller */
1994/1107		CCB *ccb; /* control block */
1994/1113		CCB *ccb; /* channel control block */
1994/1111		int perm;
1994/1112		int opens;
1994/1107
1994/1112/sys/src/9/pc/devastar.c:240,245 – 1994/1113/sys/src/9/pc/devastar.c:258,264
1994/1106		/* buffers */ Queue *iq; Queue *oq;
1994/1113		Rendez r;
1994/1106		};
1994/1109		Astar *astar[Maxcard];
1994/1112/sys/src/9/pc/devastar.c:260,265 – 1994/1113/sys/src/9/pc/devastar.c:279,302
1994/1111
1994/1109		static int astarsetup(Astar*);
1994/1107
1994/1113		/* * Only 16k maps into ISA space */ void setpage(Astar *a, ulong offset) { int i; i = APAGE(offset); if(i == a->page) return; outb(a->port+ISActl2, ISAmen|i); a->page = i; } /* * generate the astar directory entries */
1994/1111		int
1994/1112		astargen(Chan *c, Dirtab *tab, int ntab, int i, Dir *db)
1994/1111		{
1994/1112/sys/src/9/pc/devastar.c:355,360 – 1994/1113/sys/src/9/pc/devastar.c:392,398
1994/1107		if(a->irq == 0) a->irq = 15; a->id = i;
1994/1113		a->page = -1;
1994/1107		if(astarsetup(a) < 0){ xfree(a);
1994/1112/sys/src/9/pc/devastar.c:377,384 – 1994/1113/sys/src/9/pc/devastar.c:415,422
1994/1107		if(port < 0) return 0; c = inb(port + ISAid); c1 = inb(port + ISAid);
1994/1113		c = inb(port+ISAid); c1 = inb(port+ISAid);
1994/1107		return (c == ISAid0 && c1 == ISAid1)
1994/1112		|| (c == ISAid1 && c1 == ISAid0);
1994/1107		}
1994/1112/sys/src/9/pc/devastar.c:407,413 – 1994/1113/sys/src/9/pc/devastar.c:445,451
1994/1107		} /* set memory address */ outb(a->port + ISAmaddr, (a->mem>>12) & 0xfc);
1994/1113		outb(a->port+ISAmaddr, (a->mem>>12) & 0xfc);
1994/1112		a->gbc = (GCB*)(KZERO | a->mem); a->addr = (char*)(KZERO | a->mem);
1994/1107
1994/1112/sys/src/9/pc/devastar.c:479,496 – 1994/1113/sys/src/9/pc/devastar.c:517,534
1994/1112		qlock(a); if(--a->opens == 0){ /* take board out of download mode and enable IRQ */ outb(a->port + ISActl1, ISAien|isairqcode[a->irq]);
1994/1113		outb(a->port+ISActl1, ISAien|isairqcode[a->irq]);
1994/1112		/* enable ISA access to first 16k */ outb(a->port + ISActl2, ISAmen|0);
1994/1113		outb(a->port+ISActl2, ISAmen|0);
1994/1112		/* wait for program ready */ for(i = 0; i < 21; i++){ if(inb(a->port + ISActl1) & ISApr)
1994/1113		if(inb(a->port+ISActl1) & ISApr)
1994/1112		break; tsleep(&r, return0, 0, 500); } if((inb(a->port + ISActl1) & ISApr) == 0)
1994/1113		if((inb(a->port+ISActl1) & ISApr) == 0)
1994/1112		print("astar%d program not ready\n", a->id); } qunlock(a);
1994/1112/sys/src/9/pc/devastar.c:498,510 – 1994/1113/sys/src/9/pc/devastar.c:536,595
1994/1112		}
1994/1111		}
1994/1113		static long memread(Astar *a, uchar *to, long n, ulong offset) { uchar *from, *e; int i, rem; if(offset+n > a->memsize){ if(offset >= a->memsize) return 0; n = a->memsize - offset; } if(waserror()){ qunlock(a); nexterror(); } qlock(a); for(rem = n; rem > 0; rem -= i){ /* map in right piece of memory */ setpage(a, offset); i = offset&Pagemask; to = a->addr + i; i = Pagesize - i; if(i > rem) i = rem; /* byte at a time so endian doesn't matter */ for(e = from + i; from < e;) *to++ = *from++; } qunlock(a); poperror(); return n; } static long bctlread(Chan *c, void *buf, long n, ulong offset) { char s[128]; sprint(s, "id %4.4ux ctl1 %2.2ux ctl2 %2.2ux maddr %2.2ux stat %4.4ux", (inb(a->port+ISAid)<<8)|inb(a->port+ISAid), inb(a->port+ISActl1), inb(a->port+ISActl2), inb(a->port+ISAmaddr), (inb(a->port+ISAstat2)<<8)|inb(a->port+ISAstat1)); return readstr(offset, buf, n, s); }
1994/1111		long astarread(Chan *c, void *buf, long n, ulong offset) {
1994/1112		int i;
1994/1111		Astar *a;
1994/1112		char *to, *from, *e; char status[128];
1994/1111		if(c->qid.path & CHDIR) return devdirread(c, buf, n, 0, 0, astargen);
1994/1112/sys/src/9/pc/devastar.c:511,644 – 1994/1113/sys/src/9/pc/devastar.c:596,897
1994/1111		switch(TYPE(c->qid.path)){ case Qmem:
1994/1112		a = astar[BOARD(c->qid.path)]; if(offset+n > Pramsize){ if(offset >= Pramsize) return 0; n = Pramsize - offset; }
1994/1113		return memread(astar[BOARD(c->qid.path)], buf, n, offset); case Qbctl: return bctlread(astar[BOARD(c->qid.path)], buf, n, offset); }
1994/1112		if(waserror()){ qunlock(a); nexterror(); } qlock(a); from = buf; while(n > 0){ /* map in right piece of memory */ outb(a->port + ISActl2, ISAmen|(offset>>Footshift)); i = offset%Footprint; to = a->addr + i; i = Footprint - i; if(i > n) i = n;                  /* byte at a time so endian doesn't matter */ for(e = from + i; from < e;) *to++ = *from++;
1994/1113		return 0; }
1994/1112		n -= i;
1994/1113		static long memwrite(Astar *a, uchar *from, long n, ulong offset) { uchar *to, *e; int i, rem; if(offset+n > a->memsize){ if(offset >= a->memsize) return 0; n = a->memsize - offset; } if(waserror()){ qunlock(a); nexterror(); } qlock(a); for(rem = n; rem > 0; rem -= i){ /* map in right piece of memory */ setpage(a, offset); i = offset&Pagemask; from = a->addr + i; i = Pagesize - i; if(i > rem) i = rem; /* byte at a time so endian doesn't matter */ for(e = from + i; from < e;) *to++ = *from++; } qunlock(a); poperror(); return n; } /* * setup a channel */ static void chansetup(Astar *a, Astarchan *ac, void *ccb) { ac->a = a; ac->ccb = ccb; ac->iq = qopen(4*1024, 0, 0, 0); ac->oq = qopen(4*1024, 0, astarkick, p); } /* * start control progarm */ static void startcp(Astar *a) { int n, i, sz; uchar *x; CCB *ccb; if(a->running) error(Eio); /* take board out of download mode and enable IRQ */ outb(a->port+ISActl1, ISAien|isairqcode[a->irq]|ISAnotdl); a->memsize = a->ramsize; /* wait for control program to signal life */ for(i = 0; i < 21; i++){ if(inb(a->port+ISActl1) & ISApr) break; tsleep(&a->r, return0, 0, 500); } if((inb(a->port+ISActl1) & ISApr) == 0){ print("astar%d program not ready\n", a->id); error(Eio); } setpage(a, 0); i = LEUS(a->gcb->type); switch(i){ default: print("astar%d wrong board type %ux\n", a->id, i); error(Eio); case 0xc: break; } /* check assumptions */ n = LEUS(a->gcb->ccbn); if(n != 8 && n != 16){ print("astar%d had %d channels?\n", a->id, i); error(Eio); } x = a->addr + LEUS(a->gcb->ccboff); sz = LEUS(a->gcb->ccbsz); if(x+n*sz > a->addr+Pagesize){ print("astar%d ccb's not in 1st page\n", a->id); error(Eio); } for(i = 0; i < n; i++){ ccb = (CCB*)(x + i*sz); if(APAGE(LEUS(ccb->inbase)) != APAGE(LEUS(ccb->inlim)) || APAGE(LEUS(ccb->outbase)) != APAGE(LEUS(ccb->outlim))){ print("astar%d chan buffer spans pages\n", a->id); error(Eio);
1994/1112		}
1994/1113		} /* setup the channels */ a->running = 1; a->nchan = i; a->c = xalloc(a->nchan * sizeof(Astarchan)); for(i = 0; i < a->nchan; i++){ chansetup(a, &a->c[i], (CCB*)x); x += sz; } } static long bctlwrite(Astar *a, char *msg) { int i; uchar c; if(waserror()){
1994/1112		qunlock(a); poperror();
1994/1113		nexterror(); } qlock(a); if(strncmp(cmsg, "download", 8) == 0){ if(a->running) error(Eio); /* put board in download mode */ c = inb(a->port+ISActl1); outb(a->port+ISActl1, c & ~ISAnotdl); a->memsize = Pramsize; /* enable ISA access to first 16k */ outb(a->port+ISActl2, ISAmen); } else if(strncmp(cmsg, "run", 3) == 0){ if(a->running) error(Eio); startcp(a); } else error(Ebadarg); qunlock(a); poperror(); return n; } /* * change channel parameters */ void astarctl(Astarchan *ac, char *cmd) { int i, n; int command; /* let output drain for a while */ for(i = 0; i < 16 && qlen(ac->oq); i++) tsleep(&ac->r, qlen, ac->oq, 125); if(strncmp(cmd, "break", 5) == 0) cmd = "k"; command = 0; n = atoi(cmd+1); switch(*cmd){ case 'B': case 'b': switch(n){ case 76800: ac->ccb->baud = LEUS(Cb76800); break; case 115200: ac->ccb->baud = LEUS(Cb115200); break; default: ac->ccb->baud = LEUS(n); break; } command = Cconfall;
1994/1112		break; case Qbctl: a = astar[BOARD(c->qid.path)]; sprint(status, "id %2.2ux%2.2ux ctl1 %2.2ux ctl2 %2.2ux maddr %2.2ux stat %2.2ux%2.2ux", inb(a->port+ISAid), inb(a->port+ISAid), inb(a->port+ISActl1), inb(a->port+ISActl2), inb(a->port+ISAmaddr), inb(a->port+ISAstat2), inb(a->port+ISAstat1)); n = readstr(offset, buf, n, status);
1994/1113		case 'D': case 'd':
1994/1112		break;
1994/1113		case 'f': case 'F': qflush(ac->oq); break; case 'H': case 'h': qhangup(ac->iq); qhangup(ac->oq); break; case 'L': case 'l': n -= 5; if(n < 0 || n > 3) error(Ebadarg); n |= LEUS(ac->ccb->format) & ~Clenmask; ac->ccb->format = LEUS(n); command = Cconfall; break; case 'm': case 'M': n = LEUS(ac->ccb->format) | Cobeycts; ac->ccb->proto = LEUS(n); command = Cconfall; break; case 'n': case 'N': qnoblock(p->oq, n); break; case 'P': case 'p': switch(*(cmd+1)){ case 'e': n = Cevenpar; break; case 'o': n = Coddpar; break; default: n = Cnopar; break; } n |= LEUS(ac->ccb->format) & ~Cparmask; ac->ccb->format = LEUS(n); command = Cconfall; break; case 'K': case 'k': break; case 'R': case 'r': break; case 'Q': case 'q': qsetlimit(ac->iq, n); qsetlimit(ac->oq, n); break; case 'X': case 'x': n = LEUS(ac->ccb->format) | Cobeyxon; ac->ccb->proto = LEUS(n); command = Cconfall; break;
1994/1111		}                  return 0; }
1994/1113
1994/1111		long astarwrite(Chan *c, void *buf, long n, ulong offset) {
1994/1112		Astar *a; char *to, *from, *e; int i;
1994/1113		Astarchan *ac;
1994/1112		char cmsg[32];
1994/1111		if(c->qid.path & CHDIR) error(Eperm);
1994/1113		a = astar[BOARD(c->qid.path)];
1994/1111		switch(TYPE(c->qid.path)){ case Qmem:
1994/1112		a = astar[BOARD(c->qid.path)]; if(offset+n > Pramsize){ if(offset >= Pramsize) return 0; n = Pramsize - offset; }                  if(waserror()){ qunlock(a); nexterror(); } qlock(a); to = buf; while(n > 0){ /* map in right piece of memory */ outb(a->port + ISActl2, ISAmen|(offset>>Footshift)); i = offset%Footprint; from = a->addr + i; i = Footprint - i; if(i > n) i = n;                  /* byte at a time so endian doesn't matter */ for(e = from + i; from < e;) *to++ = *from++;                  n -= i; } qunlock(a); poperror(); break;
1994/1113		return memwrite(a, buf, n, offset);
1994/1112		case Qbctl: if(n > sizeof cmsg) n = sizeof(cmsg) - 1; memmove(cmsg, buf, n); cmsg[n] = 0;                  if(waserror()){ qunlock(a); nexterror(); } qlock(a); if(strncmp(cmsg, "download", 8) == 0){ /* put board in download mode */ outb(a->port + ISActl1, ISAdl);                  /* enable ISA access to first 16k */ outb(a->port + ISActl2, ISAmen);                  } else if(strncmp(cmsg, "run", 3) == 0){ /* take board out of download mode and enable IRQ */ outb(a->port + ISActl1, ISAien|isairqcode[a->irq]);                  /* enable ISA access to first 16k */ outb(a->port + ISActl2, ISAmen);                  /* wait for control program to signal life */ for(i = 0; i < 21; i++){ if(inb(a->port + ISActl1) & ISApr) break; tsleep(&a->r, return0, 0, 500); } if((inb(a->port + ISActl1) & ISApr) == 0) print("astar%d program not ready\n", a->id);                  } else error(Ebadarg); qunlock(a); poperror(); break;
1994/1113		return bctlwrite(a, cmsg); case Qdata: ac = a->c + CHAN(c->qid.path); return qwrite(ac->oq, buf, n); case Qctl: if(n > sizeof cmsg) n = sizeof(cmsg) - 1; memmove(cmsg, buf, n); cmsg[n] = 0; return astarctl(a, msg);
1994/1111		}
1994/1109		return 0;
1994/1112/sys/src/9/pc/devastar.c:664,666 – 1994/1113/sys/src/9/pc/devastar.c:917,920
1994/1112		USED(c, dp); error(Eperm);
1994/1106		}
1994/1113
1994/1113/sys/src/9/pc/devastar.c:107,112 – 1994/1114/sys/src/9/pc/devastar.c:107,115 (short | long)
1994/1107		G100e= 0xA, Gx00i= 0xC,
1994/1114		/* GCB.cmd2 bit */ Gintack= 0x1,
1994/1107		/* GCB.status2 bits */ Ghas232= (1<<0), Ghas422= (1<<1),
1994/1113/sys/src/9/pc/devastar.c:229,254 – 1994/1114/sys/src/9/pc/devastar.c:232,259
1994/1106		/* host per controller info */ struct Astar {
1994/1112		QLock;
1994/1114		QLock; /* lock for rendez */ Rendez r; /* waiting for command completion */
1994/1112
1994/1107		ISAConf;
1994/1114		Lock pagelock; /* lock for setting page */ int page; /* page currently mapped */
1994/1107		int id; /* from plan9.ini */
1994/1111		int nchan; /* number of channels */ Astarchan *c; /* channels */
1994/1107		int ramsize; /* 16k or 256k */
1994/1113		int memsize; /* size of memory currently mapped */ int page; /* page currently mapped */ GCB *gbc; /* global board comm area */ uchar *addr; /* base of memory area */ int running; Rendez r; /* when waiting for board */
1994/1106		}; /* host per channel info */ struct Astarchan { QLock;
1994/1114		QLock; /* lock for rendez */ Rendez r; /* waiting for command completion */
1994/1106
1994/1109		Astar *a; /* controller */
1994/1113		CCB *ccb; /* channel control block */
1994/1113/sys/src/9/pc/devastar.c:255,264 – 1994/1114/sys/src/9/pc/devastar.c:260,267
1994/1111		int perm;
1994/1112		int opens;
1994/1107
1994/1106		/* buffers */ Queue *iq; Queue *oq;
1994/1113		Rendez r;
1994/1106		};
1994/1109		Astar *astar[Maxcard];
1994/1113/sys/src/9/pc/devastar.c:277,288 – 1994/1114/sys/src/9/pc/devastar.c:280,295
1994/1111		#define CHAN(x) ((((x)&~CHDIR)>>8)&0xff) #define QID(b,c,t) (((b)<<16)|((c)<<8)|(t))
1994/1109		static int astarsetup(Astar*);
1994/1114		static int astarsetup(Astar*); static void astarintr(Ureg*, void*); static void astarkick(Astarchan*); static void enable(Astarchan*); static void disable(Astarchan*);
1994/1107
1994/1113		/* * Only 16k maps into ISA space */ void
1994/1114		static void
1994/1113		setpage(Astar *a, ulong offset) { int i;
1994/1113/sys/src/9/pc/devastar.c:401,406 – 1994/1114/sys/src/9/pc/devastar.c:408,415
1994/1107		}
1994/1112		print("serial%d avanstar addr %lux irq %d\n", i, a->addr, a->irq);
1994/1109		nastar++;
1994/1114		setvec(Int0vec + a->irq, astarintr, a);
1994/1107		} }
1994/1113/sys/src/9/pc/devastar.c:500,505 – 1994/1114/sys/src/9/pc/devastar.c:509,526
1994/1112		if(!iseve()) error(Eperm); break;
1994/1114		case Qdata: case Qctl: qlock(ac); if(waserror()){ qunlock(a); nexterror(); } if(ac->opens++ == 0) enable(ac); qunlock(ac); poperror(); break;
1994/1112		}
1994/1111		return c;
1994/1113/sys/src/9/pc/devastar.c:513,546 – 1994/1114/sys/src/9/pc/devastar.c:534,564
1994/1112		switch(TYPE(c->qid.path)){ case Qmem: a = astar[BOARD(c->qid.path)]; qlock(a); if(--a->opens == 0){ /* take board out of download mode and enable IRQ */
1994/1113		outb(a->port+ISActl1, ISAien|isairqcode[a->irq]);
1994/1112		/* enable ISA access to first 16k */
1994/1113		outb(a->port+ISActl2, ISAmen|0);
1994/1112		/* wait for program ready */ for(i = 0; i < 21; i++){
1994/1113		if(inb(a->port+ISActl1) & ISApr)
1994/1112		break; tsleep(&r, return0, 0, 500); }
1994/1113		if((inb(a->port+ISActl1) & ISApr) == 0)
1994/1112		print("astar%d program not ready\n", a->id);
1994/1114		break; case Qdata: case Qctl: qlock(ac); if(waserror()){ qunlock(a); nexterror();
1994/1112		} qunlock(a);
1994/1114		if(--ac->opens == 0) disable(ac); qunlock(ac); poperror();
1994/1112		break; }
1994/1111		}
1994/1114		/* * read ISA mapped memory */
1994/1113		static long memread(Astar *a, uchar *to, long n, ulong offset) { uchar *from, *e;
1994/1114		uchar *from, *e, *tp;
1994/1113		int i, rem;
1994/1114		uchar tmp[256];
1994/1113		if(offset+n > a->memsize){ if(offset >= a->memsize)
1994/1113/sys/src/9/pc/devastar.c:548,579 – 1994/1114/sys/src/9/pc/devastar.c:566,602
1994/1113		n = a->memsize - offset; } if(waserror()){ qunlock(a); nexterror(); } qlock(a);                  for(rem = n; rem > 0; rem -= i){ /* map in right piece of memory */ setpage(a, offset); i = offset&Pagemask; to = a->addr + i;
1994/1114		from = a->addr + i;
1994/1113		i = Pagesize - i; if(i > rem) i = rem;                  /* byte at a time so endian doesn't matter */
1994/1114		if(i > sizeof tmp) i = sizeof tmp; /* * byte at a time so endian doesn't matter, * go via tmp to avoid pagefaults while ilock'd */ tp = tmp; ilock(&a->pagelock); setpage(a, offset);
1994/1113		for(e = from + i; from < e;) *to++ = *from++;
1994/1114		*tp++ = *from++; iunlock(&a->pagelock); memmove(to, tmp, i); to += i;
1994/1113		} qunlock(a); poperror(); return n; }
1994/1114		/* * read ISA status */
1994/1113		static long bctlread(Chan *c, void *buf, long n, ulong offset) {
1994/1113/sys/src/9/pc/devastar.c:604,614 – 1994/1114/sys/src/9/pc/devastar.c:627,641
1994/1113		return 0; }
1994/1112
1994/1114		/* * write ISA mapped memory */
1994/1113		static long memwrite(Astar *a, uchar *from, long n, ulong offset) { uchar *to, *e;
1994/1114		uchar *to, *e, *tp;
1994/1113		int i, rem;
1994/1114		uchar tmp[256];
1994/1113		if(offset+n > a->memsize){ if(offset >= a->memsize)
1994/1113/sys/src/9/pc/devastar.c:616,660 – 1994/1114/sys/src/9/pc/devastar.c:643,677
1994/1113		n = a->memsize - offset; } if(waserror()){ qunlock(a); nexterror(); } qlock(a);                  for(rem = n; rem > 0; rem -= i){ /* map in right piece of memory */ setpage(a, offset); i = offset&Pagemask; from = a->addr + i;
1994/1114		to = a->addr + i;
1994/1113		i = Pagesize - i; if(i > rem) i = rem;
1994/1114		if(i > sizeof tmp) i = sizeof tmp;
1994/1113		/* byte at a time so endian doesn't matter */
1994/1114		/* * byte at a time so endian doesn't matter, * go via tmp to avoid pagefaults while ilock'd */ memmove(tmp, from, i); tp = tmp; ilock(&a->pagelock); setpage(a, offset);
1994/1113		for(e = from + i; from < e;) *to++ = *from++;
1994/1114		*to++ = *tp++; iunlock(&a->pagelock); from += i;
1994/1113		} qunlock(a); poperror(); return n; } /* * setup a channel */ static void chansetup(Astar *a, Astarchan *ac, void *ccb) { ac->a = a; ac->ccb = ccb; ac->iq = qopen(4*1024, 0, 0, 0); ac->oq = qopen(4*1024, 0, astarkick, p); }                  /* * start control progarm */ static void
1994/1113/sys/src/9/pc/devastar.c:663,668 – 1994/1114/sys/src/9/pc/devastar.c:680,686
1994/1113		int n, i, sz; uchar *x; CCB *ccb;
1994/1114		Astarchan *ac;
1994/1113		if(a->running) error(Eio);
1994/1113/sys/src/9/pc/devastar.c:682,687 – 1994/1114/sys/src/9/pc/devastar.c:700,710
1994/1113		error(Eio); }
1994/1114		if(waserror()){ iunlock(&a->pagelock); poperror(); } ilock(&a->pagelock);
1994/1113		setpage(a, 0); i = LEUS(a->gcb->type); switch(i){
1994/1113/sys/src/9/pc/devastar.c:712,717 – 1994/1114/sys/src/9/pc/devastar.c:735,742
1994/1113		error(Eio);
1994/1112		}
1994/1113		}
1994/1114		iunlock(&a->pagelock); poperror();
1994/1113		/* setup the channels */ a->running = 1;
1994/1113/sys/src/9/pc/devastar.c:718,724 – 1994/1114/sys/src/9/pc/devastar.c:743,753
1994/1113		a->nchan = i; a->c = xalloc(a->nchan * sizeof(Astarchan)); for(i = 0; i < a->nchan; i++){ chansetup(a, &a->c[i], (CCB*)x);
1994/1114		ac = &a->c[i]; ac->a = a; ac->ccb = (CCB*)x; ac->iq = qopen(4*1024, 0, 0, 0); ac->oq = qopen(4*1024, 0, astarkick, ac);
1994/1113		x += sz; } }
1994/1113/sys/src/9/pc/devastar.c:761,773 – 1994/1114/sys/src/9/pc/devastar.c:790,894
1994/1113		} /*
1994/1114		* Send a command to a channel * (must be called with ac qlocked) */ static int chancmddone(void *arg) { CCB *ccb = arg; int x; ilock(&ac->a->pagelock); setpage(ac->a, 0); x = ccb->cmd; iunlock(&ac->a->pagelock); return x; } static void chancmd(Astarchan *ac, int cmd) { int i; CCB *ccb; ccb = ac->ccb; ilock(&ac->a->pagelock); setpage(ac->a, 0); ccb->cmd = cmd; iunlock(&ac->a->pagelock); /* wait outside of lock */ tsleep(&ac->r, chancmddone, ccb, 1000); ilock(&ac->a->pagelock); setpage(ac->a, 0); if(ccb->cmd){ print("astar%d cmd didn't terminate\n", ac->a->id); error(Eio); } if(ccb->status){ print("astar%d cmd status %ux\n", ac->a->id, ccb->status); error(Eio); } iunlock(&ac->a->pagelock); } /* * enable a channel for IO, set standard params. * (must be called with ac qlocked) */ static void enable(Astarchan *ac) { Astar qÍ*a = ac->a; /* make sure we control RTS, DTR and break */ ilock(&a->pagelock); setpage(a, 0); n = LEUS(ac->ccb->proto) | Cmctl; ac->ccb->proto = LEUS(n); iunlock(&a->pagelock); chancmd(ac, Crcvena|Cxmtena|Cflushin|Cflushout|Confall); astarctl(ac, "b9600"); astarctl(ac, "l8"); astarctl(ac, "p0"); astarctl(ac, "d1"); astarctl(ac, "r1"); } /* * disable a channel for IO * (must be called with ac qlocked) */ static void disable(Astarchan *ac) { astarctl(ac, "d0"); astarctl(ac, "r0"); ilock(&ac->a->pagelock); setpage(ac->a, 0); ccb->intrigger = 8; ccb->outlow = 32; iunlock(&ac->a->pagelock); chancmd(ac, Crcvdis|Cxmtdis|Cflushin|Cflushout|Cconfall); } /*
1994/1113		* change channel parameters
1994/1114		* (must be called with ac qlocked)
1994/1113		*/ void
1994/1114		static void
1994/1113		astarctl(Astarchan *ac, char *cmd) { int i, n; int command;
1994/1114		CCB *ccb; Astar *a;
1994/1113		/* let output drain for a while */ for(i = 0; i < 16 && qlen(ac->oq); i++)
1994/1113/sys/src/9/pc/devastar.c:776,795 – 1994/1114/sys/src/9/pc/devastar.c:897,920
1994/1113		if(strncmp(cmd, "break", 5) == 0) cmd = "k";
1994/1114		ccb = ac->ccb;
1994/1113		command = 0; n = atoi(cmd+1);
1994/1114		i = atoi(cmd+1); a = ac->a; ilock(&a->pagelock); setpage(a, 0);
1994/1113		switch(*cmd){ case 'B': case 'b': switch(n){
1994/1114		switch(i){
1994/1113		case 76800: ac->ccb->baud = LEUS(Cb76800);
1994/1114		ccb->baud = LEUS(Cb76800);
1994/1113		break; case 115200: ac->ccb->baud = LEUS(Cb115200);
1994/1114		ccb->baud = LEUS(Cb115200);
1994/1113		break; default: ac->ccb->baud = LEUS(n);
1994/1114		ccb->baud = LEUS(n);
1994/1113		break; } command = Cconfall;
1994/1113/sys/src/9/pc/devastar.c:796,801 – 1994/1114/sys/src/9/pc/devastar.c:921,932
1994/1112		break;
1994/1113		case 'D': case 'd':
1994/1114		n = LEUS(ccb->mctl); if(i) n |= Cdtrctl; else n &= ~Cdtrctl; ccb->mctl = LEUS(n);
1994/1112		break;
1994/1113		case 'f': case 'F':
1994/1113/sys/src/9/pc/devastar.c:811,824 – 1994/1114/sys/src/9/pc/devastar.c:942,965
1994/1113		n -= 5; if(n < 0 || n > 3) error(Ebadarg); n |= LEUS(ac->ccb->format) & ~Clenmask; ac->ccb->format = LEUS(n);
1994/1114		n |= LEUS(ccb->format) & ~Clenmask; ccb->format = LEUS(n);
1994/1113		command = Cconfall; break; case 'm': case 'M': n = LEUS(ac->ccb->format) | Cobeycts; ac->ccb->proto = LEUS(n);
1994/1114		/* turn on cts */ n = LEUS(ccb->proto); if(i) n |= Cobeycts; else n &= ~Cobeycts; ccb->proto = LEUS(n); /* set fifo sizes */ ccb->intrigger = 8; ccb->outlow = 32;
1994/1113		command = Cconfall; break; case 'n':
1994/1113/sys/src/9/pc/devastar.c:838,852 – 1994/1114/sys/src/9/pc/devastar.c:979,1011
1994/1113		n = Cnopar; break; } n |= LEUS(ac->ccb->format) & ~Cparmask; ac->ccb->format = LEUS(n);
1994/1114		n |= LEUS(ccb->format) & ~Cparmask; ccb->format = LEUS(n);
1994/1113		command = Cconfall; break; case 'K': case 'k':
1994/1114		if(i <= 0) i = 250; n = LEUS(ccb->mctl) | Cbreakctl; ccb->mctl = LEUS(n); iunlock(&a->pagelock); tsleep(&ac->r, return0, 0, i); ilock(&a->pagelock); setpage(a, 0); n &= ~Cbreakctl; ccb->mctl = LEUS(n);
1994/1113		break; case 'R': case 'r':
1994/1114		n = LEUS(ccb->mctl); if(i) n |= Crtsctl; else n &= ~Crtsctl; ccb->mctl = LEUS(n);
1994/1113		break; case 'Q': case 'q':
1994/1113/sys/src/9/pc/devastar.c:855,868 – 1994/1114/sys/src/9/pc/devastar.c:1014,1034
1994/1113		break; case 'X': case 'x': n = LEUS(ac->ccb->format) | Cobeyxon; ac->ccb->proto = LEUS(n);
1994/1114		n = LEUS(ccb->proto); if(i) n |= Cobeyxon; else n &= ~Cobeyxon; ccb->proto = LEUS(n);
1994/1113		command = Cconfall; break;
1994/1111		}
1994/1114		iunlock(&a->pagelock); if(command) chancmd(ac, command);
1994/1111		}
1994/1113
1994/1111		long astarwrite(Chan *c, void *buf, long n, ulong offset) {
1994/1113/sys/src/9/pc/devastar.c:887,897 – 1994/1114/sys/src/9/pc/devastar.c:1053,1072
1994/1113		ac = a->c + CHAN(c->qid.path); return qwrite(ac->oq, buf, n); case Qctl:
1994/1114		ac = a->c + CHAN(c->qid.path);
1994/1113		if(n > sizeof cmsg) n = sizeof(cmsg) - 1; memmove(cmsg, buf, n); cmsg[n] = 0; return astarctl(a, msg);
1994/1114		if(waserror()){ qunlock(ac); nexterror(); } qlock(ac); astarctl(ac, msg); qunlock(ac); poperror();
1994/1111		}
1994/1109		return 0;
1994/1113/sys/src/9/pc/devastar.c:918,920 – 1994/1114/sys/src/9/pc/devastar.c:1093,1166
1994/1112		error(Eperm);
1994/1106		}
1994/1113
1994/1114		/* * get output going */ static void astarkick1(Astarchan *ac) { Astar *a = ac->a; CCB *ccb = a->ccb; uchar tmp[256]; int n; for(;;){ setpage(a, 0); } } static void astarkick(Astarchan *ac) { ilock(&ac->a->pagelock); astarkick(ac); iunlock(&ac->a->pagelock); } /* * handle an interrupt */ static void astarintr(Ureg *ur, void *arg) { Astar *a = arg; Astarchan *ac; ulong vec, invec, outvec, errvec, mvec, cmdvec; int i; USED(ur); lock(&a->pagelock); setpage(a, 0); /* get causes */ invec = LEUS(xchgw(&a->gcb->inserv, 0)); outvec = LEUS(xchgw(&a->gcb->outserv, 0)); errvec = LEUS(xchgw(&a->gcb->errserv, 0)); mvec = LEUS(xchgw(&a->gcb->modemserv, 0)); cmdvec = LEUS(xchgw(&a->gcb->cmdserv, 0)); /* reenable interrupts */ a->cmd2 = LEUS(Gintack); /* service interrupts */ ac = a->c; for(vec = LEUS(xchgw(&a->gcb->inserv, 0)); vec; vec >>= 1){ if(vec&1){ } setpage(a, 0); ac++; } ac = a->c; for(vec = LEUS(xchgw(&a->gcb->outserv, 0)); vec; vec >>= 1){ if(vec&1) astarkick1(ac); setpage(a, 0); ac++; } ac = a->c; for(vec = LEUS(xchgw(&a->gcb->cmdserv, 0)); vec; vec >>= 1){ if(vec&1) wakeup(&ac->r); ac++; } unlock(&a->pagelock); }
1994/1114/sys/src/9/pc/devastar.c:37,43 – 1994/1115/sys/src/9/pc/devastar.c:37,43 (short | long)
1994/1106		ISActl1= 1, /* board control */ ISAien= 1<<7, /* interrupt enable */
1994/1107		ISAirq= 7<<4, /* mask for irq code */
1994/1106		ISAdl= 1<<1, /* download bit (1 == download) */
1994/1115		ISAnotdl= 1<<1, /* download bit (0 == download) */
1994/1106		ISApr= 1<<0, /* program ready */ ISActl2= 2, /* board control */ ISA186ien= 1<<7, /* I186 irq enable bit state */
1994/1114/sys/src/9/pc/devastar.c:213,219 – 1994/1115/sys/src/9/pc/devastar.c:213,218
1994/1107		Crtsctl= 1<<1,
1994/1112		Cbreakctl= 1<<4,
1994/1107		/* CCB.mstat fields */ Cctsstat= 1<<0, Cdsrstat= 1<<1,
1994/1114/sys/src/9/pc/devastar.c:243,249 – 1994/1115/sys/src/9/pc/devastar.c:242,248
1994/1111		Astarchan *c; /* channels */
1994/1107		int ramsize; /* 16k or 256k */
1994/1113		int memsize; /* size of memory currently mapped */ GCB *gbc; /* global board comm area */
1994/1115		GCB *gcb; /* global board comm area */
1994/1113		uchar *addr; /* base of memory area */ int running;
1994/1114/sys/src/9/pc/devastar.c:285,290 – 1994/1115/sys/src/9/pc/devastar.c:284,290
1994/1114		static void astarkick(Astarchan*); static void enable(Astarchan*); static void disable(Astarchan*);
1994/1115		static void astarctl(Astarchan*, char*);
1994/1107
1994/1113		/* * Only 16k maps into ISA space
1994/1114/sys/src/9/pc/devastar.c:310,329 – 1994/1115/sys/src/9/pc/devastar.c:310,332
1994/1111		int dev, sofar, ch, t;
1994/1112		extern ulong kerndate;
1994/1111
1994/1115		memset(db, 0, sizeof(Dir));
1994/1111		USED(tab, ntab); sofar = 0;
1994/1112		for(dev = 0; dev < nastar; dev++){
1994/1111		if(sofar == i){
1994/1112		sprint(db->name, "atar%dmem", astar[dev]->id);
1994/1115		sprint(db->name, "astar%dmem", astar[dev]->id);
1994/1112		db->qid.path = QID(dev, 0, Qmem);
1994/1111		db->mode = 0660;
1994/1115		db->length = astar[dev]->memsize;
1994/1111		break; }
1994/1112		sofar++;
1994/1111
1994/1112		if(sofar == i){ sprint(db->name, "atar%dctl", astar[dev]->id);
1994/1115		sprint(db->name, "astar%dctl", astar[dev]->id);
1994/1112		db->qid.path = QID(dev, 0, Qbctl); db->mode = 0660; break;
1994/1114/sys/src/9/pc/devastar.c:338,354 – 1994/1115/sys/src/9/pc/devastar.c:341,357
1994/1111		case 0: sprint(db->name, "eia%d%2.2d", dev, ch); db->mode = astar[dev]->c[ch].perm;
1994/1112		db->qid.path = QID(dev, 0, Qdata);
1994/1115		db->qid.path = QID(dev, ch, Qdata);
1994/1111		break; case 1: sprint(db->name, "eia%d%2.2dctl", dev, ch); db->mode = astar[dev]->c[ch].perm;
1994/1112		db->qid.path = QID(dev, 0, Qctl);
1994/1115		db->qid.path = QID(dev, ch, Qctl);
1994/1111		break; case 2: sprint(db->name, "eia%d%2.2dstat", dev, ch); db->mode = 0444;
1994/1112		db->qid.path = QID(dev, 0, Qstat);
1994/1115		db->qid.path = QID(dev, ch, Qstat);
1994/1111		break;
1994/1112		}
1994/1111		break;
1994/1114/sys/src/9/pc/devastar.c:359,368 – 1994/1115/sys/src/9/pc/devastar.c:362,370
1994/1112		if(dev == nastar)
1994/1111		return -1;
1994/1115		db->qid.vers = 0;
1994/1111		db->atime = seconds(); db->mtime = kerndate; db->hlength = 0;
1994/1112		db->length = 0; /* update ???? */
1994/1111		memmove(db->uid, eve, NAMELEN); memmove(db->gid, eve, NAMELEN); db->type = devchar[c->type];
1994/1114/sys/src/9/pc/devastar.c:376,382 – 1994/1115/sys/src/9/pc/devastar.c:378,384
1994/1106		void
1994/1107		astarreset(void)
1994/1106		{ int i;
1994/1115		int i, c;
1994/1107		Astar *a;
1994/1106		for(i = 0; i < Maxcard; i++){
1994/1114/sys/src/9/pc/devastar.c:394,399 – 1994/1115/sys/src/9/pc/devastar.c:396,405
1994/1107		else continue;
1994/1108
1994/1115		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c | ISAnotdl); a->memsize = a->ramsize;
1994/1107		if(a->mem == 0)
1994/1108		a->mem = 0xD4000;
1994/1107		if(a->irq == 0)
1994/1114/sys/src/9/pc/devastar.c:406,412 – 1994/1115/sys/src/9/pc/devastar.c:412,419
1994/1109		astar[nastar] = 0;
1994/1107		continue; }
1994/1112		print("serial%d avanstar addr %lux irq %d\n", i, a->addr, a->irq);
1994/1115		print("serial%d avanstar port %d addr %lux irq %d\n", i, a->port, a->addr, a->irq);
1994/1109		nastar++;
1994/1114		setvec(Int0vec + a->irq, astarintr, a);
1994/1114/sys/src/9/pc/devastar.c:455,462 – 1994/1115/sys/src/9/pc/devastar.c:462,469
1994/1107		/* set memory address */
1994/1113		outb(a->port+ISAmaddr, (a->mem>>12) & 0xfc);
1994/1112		a->gbc = (GCB*)(KZERO | a->mem); a->addr = (char*)(KZERO | a->mem);
1994/1115		a->gcb = (GCB*)(KZERO | a->mem); a->addr = (uchar*)(KZERO | a->mem);
1994/1107		/* set interrupt level */
1994/1112		if(isairqcode[a->irq] == -1){
1994/1114/sys/src/9/pc/devastar.c:475,481 – 1994/1115/sys/src/9/pc/devastar.c:482,488
1994/1111		Chan* astarattach(char *spec) { return devattach('g', spec);
1994/1115		return devattach('G', spec);
1994/1111		} Chan*
1994/1114/sys/src/9/pc/devastar.c:500,507 – 1994/1115/sys/src/9/pc/devastar.c:507,516
1994/1111		astaropen(Chan *c, int omode) {
1994/1112		Astar *a;
1994/1115		Astarchan *ac;
1994/1111		c = devopen(c, omode, 0, 0, astargen);
1994/1115		a = astar[BOARD(c->qid.path)];
1994/1111
1994/1112		switch(TYPE(c->qid.path)){ case Qmem:
1994/1114/sys/src/9/pc/devastar.c:511,519 – 1994/1115/sys/src/9/pc/devastar.c:520,529
1994/1112		break;
1994/1114		case Qdata: case Qctl:
1994/1115		ac = a->c + CHAN(c->qid.path);
1994/1114		qlock(ac); if(waserror()){ qunlock(a);
1994/1115		qunlock(ac);
1994/1114		nexterror(); } if(ac->opens++ == 0)
1994/1114/sys/src/9/pc/devastar.c:530,549 – 1994/1115/sys/src/9/pc/devastar.c:540,565
1994/1111		astarclose(Chan *c) {
1994/1112		Astar *a; int i;
1994/1115		Astarchan *ac;
1994/1112
1994/1115		a = astar[BOARD(c->qid.path)];
1994/1112		switch(TYPE(c->qid.path)){ case Qmem:
1994/1114		break; case Qdata: case Qctl:
1994/1115		ac = a->c + CHAN(c->qid.path);
1994/1114		qlock(ac); if(waserror()){ qunlock(a);
1994/1115		qunlock(ac);
1994/1114		nexterror();
1994/1112		}
1994/1114		if(--ac->opens == 0)
1994/1115		if(--ac->opens == 0){
1994/1114		disable(ac);
1994/1115		qclose(ac->iq); qclose(ac->oq); }
1994/1114		qunlock(ac); poperror();
1994/1112		break;
1994/1114/sys/src/9/pc/devastar.c:574,581 – 1994/1115/sys/src/9/pc/devastar.c:590,597
1994/1113		i = Pagesize - i; if(i > rem) i = rem;
1994/1114		if(i > sizeof tmp) i = sizeof tmp;
1994/1115		if(i > sizeof(tmp)) i = sizeof(tmp);
1994/1114		/* * byte at a time so endian doesn't matter,
1994/1114/sys/src/9/pc/devastar.c:584,594 – 1994/1115/sys/src/9/pc/devastar.c:600,612
1994/1114		tp = tmp; ilock(&a->pagelock); setpage(a, offset);
1994/1113		for(e = from + i; from < e;)
1994/1115		for(e = tp + i; tp < e;)
1994/1114		*tp++ = *from++; iunlock(&a->pagelock); memmove(to, tmp, i); to += i;
1994/1115		offset += i;
1994/1113		} return n;
1994/1114/sys/src/9/pc/devastar.c:598,604 – 1994/1115/sys/src/9/pc/devastar.c:616,622
1994/1114		* read ISA status */
1994/1113		static long bctlread(Chan *c, void *buf, long n, ulong offset)
1994/1115		bctlread(Astar *a, void *buf, long n, ulong offset)
1994/1113		{ char s[128];
1994/1114/sys/src/9/pc/devastar.c:613,618 – 1994/1115/sys/src/9/pc/devastar.c:631,638
1994/1111		long astarread(Chan *c, void *buf, long n, ulong offset) {
1994/1115		Astar *a; Astarchan *ac;
1994/1111		if(c->qid.path & CHDIR) return devdirread(c, buf, n, 0, 0, astargen);
1994/1114/sys/src/9/pc/devastar.c:622,627 – 1994/1115/sys/src/9/pc/devastar.c:642,651
1994/1113		return memread(astar[BOARD(c->qid.path)], buf, n, offset); case Qbctl: return bctlread(astar[BOARD(c->qid.path)], buf, n, offset);
1994/1115		case Qdata: a = astar[BOARD(c->qid.path)]; ac = a->c + CHAN(c->qid.path); return qread(ac->oq, buf, n);
1994/1113		}
1994/1112
1994/1113		return 0;
1994/1114/sys/src/9/pc/devastar.c:651,658 – 1994/1115/sys/src/9/pc/devastar.c:675,682
1994/1113		i = Pagesize - i; if(i > rem) i = rem;
1994/1114		if(i > sizeof tmp) i = sizeof tmp;
1994/1115		if(i > sizeof(tmp)) i = sizeof(tmp);
1994/1113
1994/1114		/* * byte at a time so endian doesn't matter,
1994/1114/sys/src/9/pc/devastar.c:662,671 – 1994/1115/sys/src/9/pc/devastar.c:686,697
1994/1114		tp = tmp; ilock(&a->pagelock); setpage(a, offset);
1994/1113		for(e = from + i; from < e;)
1994/1115		for(e = tp + i; tp < e;)
1994/1114		*to++ = *tp++; iunlock(&a->pagelock); from += i;
1994/1115		offset += i;
1994/1113		} return n;
1994/1114/sys/src/9/pc/devastar.c:746,761 – 1994/1115/sys/src/9/pc/devastar.c:772,790
1994/1114		ac = &a->c[i]; ac->a = a; ac->ccb = (CCB*)x;
1994/1115		ac->perm = 0660;
1994/1114		ac->iq = qopen(4*1024, 0, 0, 0); ac->oq = qopen(4*1024, 0, astarkick, ac);
1994/1113		x += sz; }
1994/1115		/* reenable interrupts */ a->gcb->cmd2 = LEUS(Gintack);
1994/1113		} static long bctlwrite(Astar *a, char *msg)
1994/1115		static void bctlwrite(Astar *a, char *cmsg)
1994/1113		{ int i; uchar c; if(waserror()){
1994/1114/sys/src/9/pc/devastar.c:764,773 – 1994/1115/sys/src/9/pc/devastar.c:793,802
1994/1113		} qlock(a); if(strncmp(cmsg, "download", 8) == 0){ if(a->running) error(Eio);
1994/1115		if(a->running) error(Eio);
1994/1113
1994/1115		if(strncmp(cmsg, "download", 8) == 0){
1994/1113		/* put board in download mode */ c = inb(a->port+ISActl1); outb(a->port+ISActl1, c & ~ISAnotdl);
1994/1114/sys/src/9/pc/devastar.c:776,784 – 1994/1115/sys/src/9/pc/devastar.c:805,821
1994/1113		/* enable ISA access to first 16k */ outb(a->port+ISActl2, ISAmen);
1994/1115		} else if(strncmp(cmsg, "sharedmem", 9) == 0){ /* map shared memory */ c = inb(a->port+ISActl1); outb(a->port+ISActl1, c | ISAnotdl); a->memsize = a->ramsize; /* enable ISA access to first 16k */ outb(a->port+ISActl2, ISAmen);
1994/1113		} else if(strncmp(cmsg, "run", 3) == 0){ if(a->running) error(Eio);
1994/1115		/* start up downloaded program */
1994/1113		startcp(a); } else
1994/1114/sys/src/9/pc/devastar.c:786,792 – 1994/1115/sys/src/9/pc/devastar.c:823,828
1994/1113		qunlock(a); poperror(); return n; } /*
1994/1114/sys/src/9/pc/devastar.c:796,816 – 1994/1115/sys/src/9/pc/devastar.c:832,852
1994/1114		static int chancmddone(void *arg) { CCB *ccb = arg;
1994/1115		Astarchan *ac = arg;
1994/1114		int x; ilock(&ac->a->pagelock); setpage(ac->a, 0); x = ccb->cmd;
1994/1115		x = ac->ccb->cmd;
1994/1114		iunlock(&ac->a->pagelock); return x;
1994/1115		return !x;
1994/1114		} static void chancmd(Astarchan *ac, int cmd) { int i; CCB *ccb;
1994/1115		int status;
1994/1114		ccb = ac->ccb;
1994/1114/sys/src/9/pc/devastar.c:820,838 – 1994/1115/sys/src/9/pc/devastar.c:856,876
1994/1114		iunlock(&ac->a->pagelock); /* wait outside of lock */ tsleep(&ac->r, chancmddone, ccb, 1000);
1994/1115		tsleep(&ac->r, chancmddone, ac, 1000);
1994/1114		ilock(&ac->a->pagelock); setpage(ac->a, 0); if(ccb->cmd){
1994/1115		status = ccb->status; cmd = ccb->cmd; iunlock(&ac->a->pagelock); if(cmd){
1994/1114		print("astar%d cmd didn't terminate\n", ac->a->id); error(Eio); } if(ccb->status){ print("astar%d cmd status %ux\n", ac->a->id, ccb->status);
1994/1115		if(status){ print("astar%d cmd status %ux\n", ac->a->id, status);
1994/1114		error(Eio); } iunlock(&ac->a->pagelock); } /*
1994/1114/sys/src/9/pc/devastar.c:842,862 – 1994/1115/sys/src/9/pc/devastar.c:880,904
1994/1114		static void enable(Astarchan *ac) { Astar qÍ*a = ac->a;
1994/1115		Astar *a = ac->a; int n;
1994/1114		/* make sure we control RTS, DTR and break */ ilock(&a->pagelock); setpage(a, 0); n = LEUS(ac->ccb->proto) | Cmctl; ac->ccb->proto = LEUS(n);
1994/1115		ac->ccb->outlow = 64;
1994/1114		iunlock(&a->pagelock);
1994/1115		chancmd(ac, Cconfall);
1994/1114		chancmd(ac, Crcvena|Cxmtena|Cflushin|Cflushout|Confall);                  astarctl(ac, "b9600"); astarctl(ac, "l8"); astarctl(ac, "p0"); astarctl(ac, "d1"); astarctl(ac, "r1");
1994/1115		chancmd(ac, Crcvena|Cxmtena|Cconfall);
1994/1114		} /*
1994/1114/sys/src/9/pc/devastar.c:871,878 – 1994/1115/sys/src/9/pc/devastar.c:913,919
1994/1114		ilock(&ac->a->pagelock); setpage(ac->a, 0); ccb->intrigger = 8; ccb->outlow = 32;
1994/1115		ac->ccb->intrigger = 0;
1994/1114		iunlock(&ac->a->pagelock); chancmd(ac, Crcvdis|Cxmtdis|Cflushin|Cflushout|Cconfall);
1994/1114/sys/src/9/pc/devastar.c:900,908 – 1994/1115/sys/src/9/pc/devastar.c:941,951
1994/1114		ccb = ac->ccb;
1994/1113		command = 0;
1994/1114		i = atoi(cmd+1);
1994/1115
1994/1114		a = ac->a; ilock(&a->pagelock); setpage(a, 0);
1994/1115
1994/1113		switch(*cmd){ case 'B': case 'b':
1994/1114/sys/src/9/pc/devastar.c:914,920 – 1994/1115/sys/src/9/pc/devastar.c:957,963
1994/1114		ccb->baud = LEUS(Cb115200);
1994/1113		break; default:
1994/1114		ccb->baud = LEUS(n);
1994/1115		ccb->baud = LEUS(i);
1994/1113		break; } command = Cconfall;
1994/1114/sys/src/9/pc/devastar.c:939,945 – 1994/1115/sys/src/9/pc/devastar.c:982,988
1994/1113		break; case 'L': case 'l': n -= 5;
1994/1115		n = i - 5;
1994/1113		if(n < 0 || n > 3) error(Ebadarg);
1994/1114		n |= LEUS(ccb->format) & ~Clenmask;
1994/1114/sys/src/9/pc/devastar.c:958,970 – 1994/1115/sys/src/9/pc/devastar.c:1001,1012
1994/1114		/* set fifo sizes */ ccb->intrigger = 8; ccb->outlow = 32;
1994/1113		command = Cconfall; break; case 'n': case 'N': qnoblock(p->oq, n);
1994/1115		qnoblock(ac->oq, i);
1994/1113		break; case 'P': case 'p':
1994/1114/sys/src/9/pc/devastar.c:1009,1016 – 1994/1115/sys/src/9/pc/devastar.c:1051,1058
1994/1113		break; case 'Q': case 'q': qsetlimit(ac->iq, n); qsetlimit(ac->oq, n);
1994/1115		qsetlimit(ac->iq, i); qsetlimit(ac->oq, i);
1994/1113		break; case 'X': case 'x':
1994/1114/sys/src/9/pc/devastar.c:1048,1054 – 1994/1115/sys/src/9/pc/devastar.c:1090,1097
1994/1112		n = sizeof(cmsg) - 1; memmove(cmsg, buf, n); cmsg[n] = 0;
1994/1113		return bctlwrite(a, cmsg);
1994/1115		bctlwrite(a, cmsg); return n;
1994/1113		case Qdata: ac = a->c + CHAN(c->qid.path); return qwrite(ac->oq, buf, n);
1994/1114/sys/src/9/pc/devastar.c:1064,1070 – 1994/1115/sys/src/9/pc/devastar.c:1107,1113
1994/1114		nexterror(); } qlock(ac); astarctl(ac, msg);
1994/1115		astarctl(ac, cmsg);
1994/1114		qunlock(ac); poperror();
1994/1111		}
1994/1114/sys/src/9/pc/devastar.c:1089,1096 – 1994/1115/sys/src/9/pc/devastar.c:1132,1151
1994/1112		void astarwstat(Chan *c, char *dp) { USED(c, dp); error(Eperm);
1994/1115		Dir d; Astarchan *ac; if(!iseve()) error(Eperm); if(CHDIR & c->qid.path) error(Eperm); if(TYPE(c->qid.path) != Qdata && TYPE(c->qid.path) != Qctl) error(Eperm); ac = astar[BOARD(c->qid.path)]->c + CHAN(c->qid.path); convM2D(dp, &d); d.mode &= 0666; ac->perm = d.mode;
1994/1106		}
1994/1113
1994/1114		/*
1994/1114/sys/src/9/pc/devastar.c:1100,1111 – 1994/1115/sys/src/9/pc/devastar.c:1155,1191
1994/1114		astarkick1(Astarchan *ac) { Astar *a = ac->a; CCB *ccb = a->ccb; uchar tmp[256];
1994/1115		CCB *ccb = ac->ccb; uchar buf[256]; uchar *rp, *wp, *bp, *ep, *p, *e;
1994/1114		int n;
1994/1115		setpage(a, 0); ep = a->addr; rp = ep + LEUS(ccb->outrp); wp = ep + LEUS(ccb->outwp); bp = ep + LEUS(ccb->outbase); ep = ep + LEUS(ccb->outlim);
1994/1114		for(;;){
1994/1115		n = rp - wp - 1; if(n < 0) n += ep - bp + 1; if(n == 0) break; if(n > sizeof(buf)) n = sizeof(buf); n = qconsume(ac->oq, buf, n); if(n <= 0) break; setpage(a, bp - a->addr); e = buf + n; for(p = buf; p < e;){ *wp++ = *p++; if(wp > ep) wp = bp; }
1994/1114		setpage(a, 0);
1994/1115		ccb->outwp = LEUS(wp - a->addr);
1994/1114		} } static void
1994/1114/sys/src/9/pc/devastar.c:1112,1122 – 1994/1115/sys/src/9/pc/devastar.c:1192,1241
1994/1114		astarkick(Astarchan *ac) { ilock(&ac->a->pagelock); astarkick(ac);
1994/1115		astarkick1(ac);
1994/1114		iunlock(&ac->a->pagelock); } /*
1994/1115		* process input */ static void astarinput(Astarchan *ac) { Astar *a = ac->a; CCB *ccb = ac->ccb; uchar buf[256]; uchar *rp, *wp, *bp, *ep, *p, *e; int n; setpage(a, 0); ep = a->addr; rp = ep + LEUS(ccb->inrp); wp = ep + LEUS(ccb->inwp); bp = ep + LEUS(ccb->inbase); ep = ep + LEUS(ccb->inlim); for(;;){ n = wp - rp; if(n == 0) break; if(n < 0) n += ep - bp + 1; if(n > sizeof(buf)) n = sizeof(buf); setpage(a, bp - a->addr); e = buf + n; for(p = buf; p < e;){ *p++ = *rp++; if(rp > ep) rp = bp; } qproduce(ac->iq, buf, n); } setpage(a, 0); ccb->inrp = LEUS(rp - a->addr); } /*
1994/1114		* handle an interrupt */ static void
1994/1114/sys/src/9/pc/devastar.c:1125,1131 – 1994/1115/sys/src/9/pc/devastar.c:1244,1249
1994/1114		Astar *a = arg; Astarchan *ac; ulong vec, invec, outvec, errvec, mvec, cmdvec; int i; USED(ur); lock(&a->pagelock);
1994/1114/sys/src/9/pc/devastar.c:1137,1163 – 1994/1115/sys/src/9/pc/devastar.c:1255,1282
1994/1114		errvec = LEUS(xchgw(&a->gcb->errserv, 0)); mvec = LEUS(xchgw(&a->gcb->modemserv, 0)); cmdvec = LEUS(xchgw(&a->gcb->cmdserv, 0));
1994/1115		USED(mvec); USED(cmdvec); USED(errvec);
1994/1114		/* reenable interrupts */ a->cmd2 = LEUS(Gintack);
1994/1115		a->gcb->cmd2 = LEUS(Gintack);
1994/1114		/* service interrupts */ ac = a->c; for(vec = LEUS(xchgw(&a->gcb->inserv, 0)); vec; vec >>= 1){ if(vec&1){ } setpage(a, 0);
1994/1115		for(vec = invec; vec; vec >>= 1){ if(vec&1) astarinput(ac);
1994/1114		ac++; } ac = a->c; for(vec = LEUS(xchgw(&a->gcb->outserv, 0)); vec; vec >>= 1){
1994/1115		for(vec = outvec; vec; vec >>= 1){
1994/1114		if(vec&1) astarkick1(ac); setpage(a, 0); ac++; } ac = a->c; for(vec = LEUS(xchgw(&a->gcb->cmdserv, 0)); vec; vec >>= 1){
1994/1115		for(vec = cmdvec; vec; vec >>= 1){
1994/1114		if(vec&1) wakeup(&ac->r); ac++;
1994/1115/sys/src/9/pc/devastar.c:57,62 – 1994/1116/sys/src/9/pc/devastar.c:57,65 (short | long)
1994/1106
1994/1113		#define APAGE(x) ((x)>>Pageshift)
1994/1116		#define LOCKPAGE(a, o) if((a)->needpage){ilock(&(a)->pagelock);setpage(a, o);} #define UNLOCKPAGE(a) if((a)->needpage)iunlock(&(a)->pagelock)
1994/1107		/* IRQ codes */ static int isairqcode[16] = {
1994/1115/sys/src/9/pc/devastar.c:242,251 – 1994/1116/sys/src/9/pc/devastar.c:245,254
1994/1111		Astarchan *c; /* channels */
1994/1107		int ramsize; /* 16k or 256k */
1994/1113		int memsize; /* size of memory currently mapped */
1994/1116		int needpage;
1994/1115		GCB *gcb; /* global board comm area */
1994/1113		uchar *addr; /* base of memory area */ int running;
1994/1106		}; /* host per channel info */
1994/1115/sys/src/9/pc/devastar.c:258,263 – 1994/1116/sys/src/9/pc/devastar.c:261,267
1994/1113		CCB *ccb; /* channel control block */
1994/1111		int perm;
1994/1112		int opens;
1994/1116		int baud;
1994/1107
1994/1106		Queue *iq; Queue *oq;
1994/1115/sys/src/9/pc/devastar.c:282,287 – 1994/1116/sys/src/9/pc/devastar.c:286,292
1994/1114		static int astarsetup(Astar*); static void astarintr(Ureg*, void*); static void astarkick(Astarchan*);
1994/1116		static void astarkickin(Astarchan*);
1994/1114		static void enable(Astarchan*); static void disable(Astarchan*);
1994/1115		static void astarctl(Astarchan*, char*);
1994/1115/sys/src/9/pc/devastar.c:526,533 – 1994/1116/sys/src/9/pc/devastar.c:531,541
1994/1115		qunlock(ac);
1994/1114		nexterror(); } if(ac->opens++ == 0)
1994/1116		if(ac->opens++ == 0){
1994/1114		enable(ac);
1994/1116		qreopen(ac->iq); qreopen(ac->oq); }
1994/1114		qunlock(ac); poperror(); break;
1994/1115/sys/src/9/pc/devastar.c:598,608 – 1994/1116/sys/src/9/pc/devastar.c:606,615
1994/1114		* go via tmp to avoid pagefaults while ilock'd */ tp = tmp; ilock(&a->pagelock); setpage(a, offset);
1994/1116		LOCKPAGE(a, offset);
1994/1115		for(e = tp + i; tp < e;)
1994/1114		*tp++ = *from++; iunlock(&a->pagelock);
1994/1116		UNLOCKPAGE(a);
1994/1114		memmove(to, tmp, i); to += i;
1994/1115
1994/1115/sys/src/9/pc/devastar.c:645,651 – 1994/1116/sys/src/9/pc/devastar.c:652,658
1994/1115		case Qdata: a = astar[BOARD(c->qid.path)]; ac = a->c + CHAN(c->qid.path); return qread(ac->oq, buf, n);
1994/1116		return qread(ac->iq, buf, n);
1994/1113		}
1994/1112
1994/1113		return 0;
1994/1115/sys/src/9/pc/devastar.c:684,694 – 1994/1116/sys/src/9/pc/devastar.c:691,700
1994/1114		*/ memmove(tmp, from, i); tp = tmp; ilock(&a->pagelock); setpage(a, offset);
1994/1116		LOCKPAGE(a, offset);
1994/1115		for(e = tp + i; tp < e;)
1994/1114		*to++ = *tp++; iunlock(&a->pagelock);
1994/1116		UNLOCKPAGE(a);
1994/1114		from += i;
1994/1115		offset += i;
1994/1115/sys/src/9/pc/devastar.c:714,719 – 1994/1116/sys/src/9/pc/devastar.c:720,730
1994/1113		/* take board out of download mode and enable IRQ */ outb(a->port+ISActl1, ISAien|isairqcode[a->irq]|ISAnotdl); a->memsize = a->ramsize;
1994/1116		setpage(a, 0); if(a->memsize <= Pagesize) a->needpage = 0; else a->needpage = 1;
1994/1113		/* wait for control program to signal life */ for(i = 0; i < 21; i++){
1994/1115/sys/src/9/pc/devastar.c:727,737 – 1994/1116/sys/src/9/pc/devastar.c:738,747
1994/1113		}
1994/1114		if(waserror()){ iunlock(&a->pagelock);
1994/1116		UNLOCKPAGE(a);
1994/1114		poperror(); } ilock(&a->pagelock);
1994/1113		setpage(a, 0);
1994/1116		LOCKPAGE(a, 0);
1994/1113		i = LEUS(a->gcb->type); switch(i){ default:
1994/1115/sys/src/9/pc/devastar.c:761,767 – 1994/1116/sys/src/9/pc/devastar.c:771,778
1994/1113		error(Eio);
1994/1112		}
1994/1113		}
1994/1114		iunlock(&a->pagelock);
1994/1116		UNLOCKPAGE(a);
1994/1114		poperror();
1994/1113		/* setup the channels */
1994/1115/sys/src/9/pc/devastar.c:773,785 – 1994/1116/sys/src/9/pc/devastar.c:784,798
1994/1114		ac->a = a; ac->ccb = (CCB*)x;
1994/1115		ac->perm = 0660;
1994/1114		ac->iq = qopen(4*1024, 0, 0, 0);
1994/1116		ac->iq = qopen(4*1024, 0, astarkickin, ac);
1994/1114		ac->oq = qopen(4*1024, 0, astarkick, ac);
1994/1113		x += sz; }
1994/1115		/* reenable interrupts */
1994/1116		/* enable control program interrupt generation */ LOCKPAGE(a, 0);
1994/1115		a->gcb->cmd2 = LEUS(Gintack);
1994/1116		UNLOCKPAGE(a);
1994/1113		}
1994/1115		static void
1994/1115/sys/src/9/pc/devastar.c:801,809 – 1994/1116/sys/src/9/pc/devastar.c:814,823
1994/1113		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c & ~ISAnotdl); a->memsize = Pramsize;
1994/1116		a->needpage = 1;
1994/1113		/* enable ISA access to first 16k */ outb(a->port+ISActl2, ISAmen);
1994/1116		setpage(a, 0);
1994/1113
1994/1115		} else if(strncmp(cmsg, "sharedmem", 9) == 0){ /* map shared memory */
1994/1115/sys/src/9/pc/devastar.c:835,844 – 1994/1116/sys/src/9/pc/devastar.c:849,857
1994/1115		Astarchan *ac = arg;
1994/1114		int x; ilock(&ac->a->pagelock); setpage(ac->a, 0);
1994/1116		LOCKPAGE(ac->a, 0);
1994/1115		x = ac->ccb->cmd;
1994/1114		iunlock(&ac->a->pagelock);
1994/1116		UNLOCKPAGE(ac->a);
1994/1114
1994/1115		return !x;
1994/1114		}
1994/1115/sys/src/9/pc/devastar.c:850,868 – 1994/1116/sys/src/9/pc/devastar.c:863,879
1994/1114		ccb = ac->ccb; ilock(&ac->a->pagelock); setpage(ac->a, 0);
1994/1116		LOCKPAGE(ac->a, 0);
1994/1114		ccb->cmd = cmd; iunlock(&ac->a->pagelock);
1994/1116		UNLOCKPAGE(ac->a);
1994/1114		/* wait outside of lock */
1994/1115		tsleep(&ac->r, chancmddone, ac, 1000);
1994/1114		ilock(&ac->a->pagelock); setpage(ac->a, 0);
1994/1116		LOCKPAGE(ac->a, 0);
1994/1115		status = ccb->status; cmd = ccb->cmd; iunlock(&ac->a->pagelock);
1994/1116		UNLOCKPAGE(ac->a);
1994/1115		if(cmd){
1994/1114		print("astar%d cmd didn't terminate\n", ac->a->id); error(Eio);
1994/1115/sys/src/9/pc/devastar.c:884,895 – 1994/1116/sys/src/9/pc/devastar.c:895,905
1994/1115		int n;
1994/1114		/* make sure we control RTS, DTR and break */ ilock(&a->pagelock); setpage(a, 0);
1994/1116		LOCKPAGE(a, 0);
1994/1114		n = LEUS(ac->ccb->proto) | Cmctl; ac->ccb->proto = LEUS(n);
1994/1115		ac->ccb->outlow = 64;
1994/1114		iunlock(&a->pagelock);
1994/1116		UNLOCKPAGE(a);
1994/1115		chancmd(ac, Cconfall);
1994/1114		astarctl(ac, "b9600");
1994/1115/sys/src/9/pc/devastar.c:911,921 – 1994/1116/sys/src/9/pc/devastar.c:921,926
1994/1114		astarctl(ac, "d0"); astarctl(ac, "r0"); ilock(&ac->a->pagelock); setpage(ac->a, 0);
1994/1115		ac->ccb->intrigger = 0;
1994/1114		iunlock(&ac->a->pagelock);                  chancmd(ac, Crcvdis|Cxmtdis|Cflushin|Cflushout|Cconfall); }
1994/1115/sys/src/9/pc/devastar.c:943,954 – 1994/1116/sys/src/9/pc/devastar.c:948,959
1994/1114		i = atoi(cmd+1);
1994/1115
1994/1114		a = ac->a; ilock(&a->pagelock); setpage(a, 0);
1994/1116		LOCKPAGE(a, 0);
1994/1115
1994/1113		switch(*cmd){ case 'B': case 'b':
1994/1116		/* set baud rate (high rates are special - only 16 bits) */
1994/1114		switch(i){
1994/1113		case 76800:
1994/1114		ccb->baud = LEUS(Cb76800);
1994/1115/sys/src/9/pc/devastar.c:960,965 – 1994/1116/sys/src/9/pc/devastar.c:965,979
1994/1115		ccb->baud = LEUS(i);
1994/1113		break; }
1994/1116		ac->baud = i; /* set trigger level to about 50 per second */ n = i/500; i = (LEUS(ccb->inlim) - LEUS(ccb->inbase))/2; if(n > i) n = i; ccb->intrigger = LEUS(n);
1994/1113		command = Cconfall;
1994/1112		break;
1994/1113		case 'D':
1994/1115/sys/src/9/pc/devastar.c:993,1007 – 1994/1116/sys/src/9/pc/devastar.c:1007,1021
1994/1113		case 'M':
1994/1114		/* turn on cts */ n = LEUS(ccb->proto); if(i) n |= Cobeycts; else n &= ~Cobeycts;
1994/1116		if(i){ n |= Cobeycts|Cgenrts; n &= ~Cmctl; } else { n &= ~(Cobeycts|Cgenrts); n |= Cmctl; }
1994/1114		ccb->proto = LEUS(n); /* set fifo sizes */ ccb->intrigger = 8;
1994/1113		command = Cconfall; break; case 'n':
1994/1115/sys/src/9/pc/devastar.c:1031,1042 – 1994/1116/sys/src/9/pc/devastar.c:1045,1055
1994/1114		i = 250; n = LEUS(ccb->mctl) | Cbreakctl; ccb->mctl = LEUS(n); iunlock(&a->pagelock);
1994/1116		UNLOCKPAGE(a);
1994/1114		tsleep(&ac->r, return0, 0, i); ilock(&a->pagelock); setpage(a, 0);
1994/1116		LOCKPAGE(a, 0);
1994/1114		n &= ~Cbreakctl; ccb->mctl = LEUS(n);
1994/1113		break;
1994/1115/sys/src/9/pc/devastar.c:1065,1071 – 1994/1116/sys/src/9/pc/devastar.c:1078,1084
1994/1113		command = Cconfall; break;
1994/1111		}
1994/1114		iunlock(&a->pagelock);
1994/1116		UNLOCKPAGE(a);
1994/1114		if(command) chancmd(ac, command);
1994/1115/sys/src/9/pc/devastar.c:1160,1166 – 1994/1116/sys/src/9/pc/devastar.c:1173,1180
1994/1115		uchar *rp, *wp, *bp, *ep, *p, *e;
1994/1114		int n;
1994/1115		setpage(a, 0);
1994/1116		if(a->needpage) setpage(a, 0);
1994/1115		ep = a->addr; rp = ep + LEUS(ccb->outrp); wp = ep + LEUS(ccb->outwp);
1994/1115/sys/src/9/pc/devastar.c:1177,1183 – 1994/1116/sys/src/9/pc/devastar.c:1191,1198
1994/1115		n = qconsume(ac->oq, buf, n); if(n <= 0) break; setpage(a, bp - a->addr);
1994/1116		if(a->needpage) setpage(a, bp - a->addr);
1994/1115		e = buf + n; for(p = buf; p < e;){ *wp++ = *p++;
1994/1115/sys/src/9/pc/devastar.c:1184,1190 – 1994/1116/sys/src/9/pc/devastar.c:1199,1206
1994/1115		if(wp > ep) wp = bp; }
1994/1114		setpage(a, 0);
1994/1116		if(a->needpage) setpage(a, 0);
1994/1115		ccb->outwp = LEUS(wp - a->addr);
1994/1114		} }
1994/1115/sys/src/9/pc/devastar.c:1208,1214 – 1994/1116/sys/src/9/pc/devastar.c:1224,1231
1994/1115		uchar *rp, *wp, *bp, *ep, *p, *e; int n; setpage(a, 0);
1994/1116		if(a->needpage) setpage(a, 0);
1994/1115		ep = a->addr; rp = ep + LEUS(ccb->inrp); wp = ep + LEUS(ccb->inwp);
1994/1115/sys/src/9/pc/devastar.c:1222,1228 – 1994/1116/sys/src/9/pc/devastar.c:1239,1246
1994/1115		n += ep - bp + 1; if(n > sizeof(buf)) n = sizeof(buf); setpage(a, bp - a->addr);
1994/1116		if(a->needpage) setpage(a, bp - a->addr);
1994/1115		e = buf + n; for(p = buf; p < e;){ *p++ = *rp++;
1994/1115/sys/src/9/pc/devastar.c:1229,1241 – 1994/1116/sys/src/9/pc/devastar.c:1247,1274
1994/1115		if(rp > ep) rp = bp; } qproduce(ac->iq, buf, n);
1994/1116		if(qroduce(ac->iq, buf, n) < 0) break; /* flow controlled */ if(a->needpage) setpage(a, 0); ccb->inrp = LEUS(rp - a->addr);
1994/1115		} setpage(a, 0); ccb->inrp = LEUS(rp - a->addr);
1994/1116		if(a->needpage) setpage(a, 0);
1994/1115		} /*
1994/1116		* get flow controlled input going again */ static void astarkick(Astarchan *ac) { ilock(&ac->a->pagelock); astarinput(ac); iunlock(&ac->a->pagelock); } /*
1994/1114		* handle an interrupt */ static void
1994/1115/sys/src/9/pc/devastar.c:1247,1253 – 1994/1116/sys/src/9/pc/devastar.c:1280,1287
1994/1114		USED(ur); lock(&a->pagelock); setpage(a, 0);
1994/1116		if(a->needpage) setpage(a, 0);
1994/1114		/* get causes */ invec = LEUS(xchgw(&a->gcb->inserv, 0));
1994/1116/sys/src/9/pc/devastar.c:344,360 – 1994/1117/sys/src/9/pc/devastar.c:344,360 (short | long)
1994/1111		t = i%3; switch(t){ case 0: sprint(db->name, "eia%d%2.2d", dev, ch);
1994/1117		sprint(db->name, "eia%d%2.2d", dev, ch+1);
1994/1111		db->mode = astar[dev]->c[ch].perm;
1994/1115		db->qid.path = QID(dev, ch, Qdata);
1994/1111		break; case 1: sprint(db->name, "eia%d%2.2dctl", dev, ch);
1994/1117		sprint(db->name, "eia%d%2.2dctl", dev, ch+1);
1994/1111		db->mode = astar[dev]->c[ch].perm;
1994/1115		db->qid.path = QID(dev, ch, Qctl);
1994/1111		break; case 2: sprint(db->name, "eia%d%2.2dstat", dev, ch);
1994/1117		sprint(db->name, "eia%d%2.2dstat", dev, ch+1);
1994/1111		db->mode = 0444;
1994/1115		db->qid.path = QID(dev, ch, Qstat);
1994/1111		break;
1994/1116/sys/src/9/pc/devastar.c:918,926 – 1994/1117/sys/src/9/pc/devastar.c:918,932
1994/1114		static void disable(Astarchan *ac) {
1994/1117		int n;
1994/1114		astarctl(ac, "d0"); astarctl(ac, "r0");
1994/1117		LOCKPAGE(ac->a, 0); n = LEUS(ac->ccb->proto) | Cmctl; ac->ccb->proto = LEUS(n); UNLOCKPAGE(ac->a);
1994/1114		chancmd(ac, Crcvdis|Cxmtdis|Cflushin|Cflushout|Cconfall); }
1994/1116/sys/src/9/pc/devastar.c:1165,1171 – 1994/1117/sys/src/9/pc/devastar.c:1171,1177
1994/1114		* get output going */ static void astarkick1(Astarchan *ac)
1994/1117		astaroutput(Astarchan *ac)
1994/1114		{ Astar *a = ac->a;
1994/1115		CCB *ccb = ac->ccb;
1994/1116/sys/src/9/pc/devastar.c:1208,1214 – 1994/1117/sys/src/9/pc/devastar.c:1214,1220
1994/1114		astarkick(Astarchan *ac) { ilock(&ac->a->pagelock);
1994/1115		astarkick1(ac);
1994/1117		astaroutput(ac);
1994/1114		iunlock(&ac->a->pagelock); }
1994/1116/sys/src/9/pc/devastar.c:1247,1253 – 1994/1117/sys/src/9/pc/devastar.c:1253,1259
1994/1115		if(rp > ep) rp = bp; }
1994/1116		if(qroduce(ac->iq, buf, n) < 0)
1994/1117		if(qproduce(ac->iq, buf, n) < 0)
1994/1116		break; /* flow controlled */ if(a->needpage) setpage(a, 0);
1994/1116/sys/src/9/pc/devastar.c:1261,1267 – 1994/1117/sys/src/9/pc/devastar.c:1267,1273
1994/1116		* get flow controlled input going again */ static void astarkick(Astarchan *ac)
1994/1117		astarkickin(Astarchan *ac)
1994/1116		{ ilock(&ac->a->pagelock); astarinput(ac);
1994/1116/sys/src/9/pc/devastar.c:1306,1312 – 1994/1117/sys/src/9/pc/devastar.c:1312,1318
1994/1114		ac = a->c;
1994/1115		for(vec = outvec; vec; vec >>= 1){
1994/1114		if(vec&1) astarkick1(ac);
1994/1117		astaroutput(ac);
1994/1114		ac++; } ac = a->c;
1994/1117/sys/src/9/pc/devastar.c:344,360 – 1994/1118/sys/src/9/pc/devastar.c:344,360 (short | long)
1994/1111		t = i%3; switch(t){ case 0:
1994/1117		sprint(db->name, "eia%d%2.2d", dev, ch+1);
1994/1118		sprint(db->name, "eia%d%2.2d", dev, ch);
1994/1111		db->mode = astar[dev]->c[ch].perm;
1994/1115		db->qid.path = QID(dev, ch, Qdata);
1994/1111		break; case 1:
1994/1117		sprint(db->name, "eia%d%2.2dctl", dev, ch+1);
1994/1118		sprint(db->name, "eia%d%2.2dctl", dev, ch);
1994/1111		db->mode = astar[dev]->c[ch].perm;
1994/1115		db->qid.path = QID(dev, ch, Qctl);
1994/1111		break; case 2:
1994/1117		sprint(db->name, "eia%d%2.2dstat", dev, ch+1);
1994/1118		sprint(db->name, "eia%d%2.2dstat", dev, ch);
1994/1111		db->mode = 0444;
1994/1115		db->qid.path = QID(dev, ch, Qstat);
1994/1111		break;
1994/1117/sys/src/9/pc/devastar.c:391,397 – 1994/1118/sys/src/9/pc/devastar.c:391,397
1994/1112		if(isaconfig("serial", i, a) == 0){
1994/1107		xfree(a);
1994/1109		astar[nastar] = 0;
1994/1106		break;
1994/1118		continue;
1994/1106		}
1994/1107		if(strcmp(a->type, "a100i") == 0 || strcmp(a->type,"A100I") == 0)
1994/1117/sys/src/9/pc/devastar.c:398,416 – 1994/1118/sys/src/9/pc/devastar.c:398,414
1994/1107		a->ramsize = 16*1024; else if(strcmp(a->type, "a200i") == 0 || strcmp(a->type,"A200I") == 0) a->ramsize = 256*1024; else
1994/1118		else { xfree(a); astar[nastar] = 0;
1994/1107		continue;
1994/1118		}
1994/1108
1994/1115		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c | ISAnotdl); a->memsize = a->ramsize;
1994/1107		if(a->mem == 0)
1994/1108		a->mem = 0xD4000;
1994/1107		if(a->irq == 0) a->irq = 15; a->id = i;
1994/1113		a->page = -1;
1994/1107		if(astarsetup(a) < 0){ xfree(a);
1994/1117/sys/src/9/pc/devastar.c:421,427 – 1994/1118/sys/src/9/pc/devastar.c:419,431
1994/1115		a->addr, a->irq);
1994/1109		nastar++;
1994/1114		setvec(Int0vec + a->irq, astarintr, a);
1994/1118		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c & ~ISAnotdl); a->memsize = Pramsize; c = inb(a->port+ISActl2); outb(a->port+ISActl2, c & ~ISAmen); a->page = -1;
1994/1107		} }
1994/1117/sys/src/9/pc/devastar.c:790,795 – 1994/1118/sys/src/9/pc/devastar.c:794,800
1994/1113		}
1994/1115
1994/1116		/* enable control program interrupt generation */
1994/1118		setvec(Int0vec + a->irq, astarintr, a);
1994/1116		LOCKPAGE(a, 0);
1994/1115		a->gcb->cmd2 = LEUS(Gintack);
1994/1116		UNLOCKPAGE(a);
1994/1118/sys/src/9/pc/devastar.c:415,431 – 1994/1119/sys/src/9/pc/devastar.c:415,435 (short | long)
1994/1109		astar[nastar] = 0;
1994/1107		continue; }
1994/1115		print("serial%d avanstar port %d addr %lux irq %d\n", i, a->port,
1994/1119		print("serial%d avanstar port 0x%lux addr %lux irq %d\n", i, a->port,
1994/1115		a->addr, a->irq);
1994/1109		nastar++;
1994/1114
1994/1119		/* disable ISA memory response */ c = inb(a->port+ISActl2); outb(a->port+ISActl2, c & ~ISAmen); /* download mode to turn off cpu */
1994/1118		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c & ~ISAnotdl); a->memsize = Pramsize;                  c = inb(a->port+ISActl2); outb(a->port+ISActl2, c & ~ISAmen); a->page = -1;
1994/1119		setvec(Int0vec + a->irq, astarintr, a);
1994/1107		} }
1994/1118/sys/src/9/pc/devastar.c:722,727 – 1994/1119/sys/src/9/pc/devastar.c:726,732
1994/1113		error(Eio); /* take board out of download mode and enable IRQ */
1994/1119		print("out of download\n");
1994/1113		outb(a->port+ISActl1, ISAien|isairqcode[a->irq]|ISAnotdl); a->memsize = a->ramsize;
1994/1116		setpage(a, 0);
1994/1118/sys/src/9/pc/devastar.c:731,736 – 1994/1119/sys/src/9/pc/devastar.c:736,742
1994/1116		a->needpage = 1;
1994/1113		/* wait for control program to signal life */
1994/1119		print("waiting for cp\n");
1994/1113		for(i = 0; i < 21; i++){ if(inb(a->port+ISActl1) & ISApr) break;
1994/1118/sys/src/9/pc/devastar.c:745,750 – 1994/1119/sys/src/9/pc/devastar.c:751,757
1994/1116		UNLOCKPAGE(a);
1994/1114		poperror(); }
1994/1119
1994/1116		LOCKPAGE(a, 0);
1994/1113		i = LEUS(a->gcb->type); switch(i){
1994/1118/sys/src/9/pc/devastar.c:776,783 – 1994/1119/sys/src/9/pc/devastar.c:783,794
1994/1112		}
1994/1113		}
1994/1116
1994/1119		/* enable control program interrupt generation */ a->gcb->cmd2 = LEUS(Gintack);
1994/1116		UNLOCKPAGE(a);
1994/1114		poperror();
1994/1119		print("setting up channels\n");
1994/1113		/* setup the channels */ a->running = 1;
1994/1118/sys/src/9/pc/devastar.c:792,803 – 1994/1119/sys/src/9/pc/devastar.c:803,808
1994/1114		ac->oq = qopen(4*1024, 0, astarkick, ac);
1994/1113		x += sz; }
1994/1115
1994/1116		/* enable control program interrupt generation */
1994/1118		setvec(Int0vec + a->irq, astarintr, a);
1994/1116		LOCKPAGE(a, 0);
1994/1115		a->gcb->cmd2 = LEUS(Gintack);
1994/1116		UNLOCKPAGE(a);
1994/1113		}
1994/1115		static void
1994/1118/sys/src/9/pc/devastar.c:1293,1298 – 1994/1119/sys/src/9/pc/devastar.c:1298,1307
1994/1114		lock(&a->pagelock);
1994/1116		if(a->needpage) setpage(a, 0);
1994/1119		if(a->running == 0){ print("astar interrupt but cp not running\n"); return; }
1994/1114		/* get causes */ invec = LEUS(xchgw(&a->gcb->inserv, 0));
1994/1119/sys/src/9/pc/devastar.c:43,49 – 1994/1120/sys/src/9/pc/devastar.c:43,49 (short | long)
1994/1106		ISA186ien= 1<<7, /* I186 irq enable bit state */ ISA186idata= 1<<6, /* I186 irq data bit state */
1994/1107		ISAmen= 1<<4, /* enable memory to respond to ISA cycles */ ISAmbank= 0, /* shift for 4 bit memory bank */
1994/1120		ISAmbank= 0xf<<0, /* shift for 4 bit memory bank */
1994/1107		ISAmaddr= 3, /* bits 14-19 of the boards mem address */
1994/1106		ISAstat1= 4, /* board status (1 bit per channel) */ ISAstat2= 5, /* board status (1 bit per channel) */
1994/1119/sys/src/9/pc/devastar.c:297,308 – 1994/1120/sys/src/9/pc/devastar.c:297,310
1994/1114		static void
1994/1113		setpage(Astar *a, ulong offset) { int i;
1994/1120		int i, c;
1994/1113		i = APAGE(offset); if(i == a->page) return; outb(a->port+ISActl2, ISAmen|i);
1994/1120		c = inb(a->port+ISActl2) & ~ISAmbank; outb(a->port+ISActl2, ISAmen|i|c);
1994/1113		a->page = i; }
1994/1119/sys/src/9/pc/devastar.c:394,399 – 1994/1120/sys/src/9/pc/devastar.c:396,402
1994/1118		continue;
1994/1106		}
1994/1120		/* check all possible names */
1994/1107		if(strcmp(a->type, "a100i") == 0 || strcmp(a->type,"A100I") == 0) a->ramsize = 16*1024; else if(strcmp(a->type, "a200i") == 0 || strcmp(a->type,"A200I") == 0)
1994/1119/sys/src/9/pc/devastar.c:404,409 – 1994/1120/sys/src/9/pc/devastar.c:407,413
1994/1107		continue;
1994/1118		}
1994/1108
1994/1120		/* defaults */
1994/1107		if(a->mem == 0)
1994/1108		a->mem = 0xD4000;
1994/1107		if(a->irq == 0)
1994/1119/sys/src/9/pc/devastar.c:415,435 – 1994/1120/sys/src/9/pc/devastar.c:419,427
1994/1109		astar[nastar] = 0;
1994/1107		continue; }
1994/1119		print("serial%d avanstar port 0x%lux addr %lux irq %d\n", i, a->port,
1994/1120		print("serial%d avanstar port 0x%lux addr %lux irq %d\n", a->id, a->port,
1994/1115		a->addr, a->irq);
1994/1109		nastar++;
1994/1114
1994/1119		/* disable ISA memory response */ c = inb(a->port+ISActl2); outb(a->port+ISActl2, c & ~ISAmen);                  /* download mode to turn off cpu */
1994/1118		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c & ~ISAnotdl); a->memsize = Pramsize; a->page = -1;
1994/1119		setvec(Int0vec + a->irq, astarintr, a);
1994/1107		} }
1994/1119/sys/src/9/pc/devastar.c:453,459 – 1994/1120/sys/src/9/pc/devastar.c:445,451
1994/1109		static int
1994/1107		astarsetup(Astar *a) {
1994/1112		int i, found;
1994/1120		int i, c, found;
1994/1107		/* see if the card exists */ found = 0;
1994/1119/sys/src/9/pc/devastar.c:473,489 – 1994/1120/sys/src/9/pc/devastar.c:465,494
1994/1107		return -1; } /* set memory address */
1994/1113		outb(a->port+ISAmaddr, (a->mem>>12) & 0xfc);
1994/1115		a->gcb = (GCB*)(KZERO | a->mem); a->addr = (uchar*)(KZERO | a->mem);
1994/1107		/* set interrupt level */
1994/1120		/* check interrupt level */
1994/1112		if(isairqcode[a->irq] == -1){
1994/1107		print("Avanstar %d bad irq %d\n", a->id, a->irq); return -1; }
1994/1111
1994/1120		/* set ISA memory address */ outb(a->port+ISAmaddr, (a->mem>>12) & 0xfc); a->gcb = (GCB*)(KZERO | a->mem); a->addr = (uchar*)(KZERO | a->mem); /* set up interrupt level, reset processor, leave interrupts off */ c = inb(a->port+ISActl1); c &= ~(ISAnotdl|ISAien|ISAirq); c |= isairqcode[a->irq]; outb(a->port+ISActl1, c); setvec(Int0vec + a->irq, astarintr, a); /* disable ISA memory response */ c = inb(a->port+ISActl2); outb(a->port+ISActl2, c & ~ISAmen); a->memsize = 0; a->page = -1;
1994/1111		return 0; }
1994/1119/sys/src/9/pc/devastar.c:717,723 – 1994/1120/sys/src/9/pc/devastar.c:722,728
1994/1113		static void startcp(Astar *a) { int n, i, sz;
1994/1120		int c, n, i, sz;
1994/1113		uchar *x; CCB *ccb;
1994/1114		Astarchan *ac;
1994/1119/sys/src/9/pc/devastar.c:727,735 – 1994/1120/sys/src/9/pc/devastar.c:732,740
1994/1113		/* take board out of download mode and enable IRQ */
1994/1119		print("out of download\n");
1994/1113		outb(a->port+ISActl1, ISAien|isairqcode[a->irq]|ISAnotdl);
1994/1120		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c|ISAien|ISAnotdl);
1994/1113		a->memsize = a->ramsize;
1994/1116		setpage(a, 0); if(a->memsize <= Pagesize) a->needpage = 0; else
1994/1119/sys/src/9/pc/devastar.c:827,832 – 1994/1120/sys/src/9/pc/devastar.c:832,838
1994/1116		a->needpage = 1;
1994/1113		/* enable ISA access to first 16k */
1994/1120		a->page = -1;
1994/1116		setpage(a, 0);
1994/1113
1994/1115		} else if(strncmp(cmsg, "sharedmem", 9) == 0){
1994/1119/sys/src/9/pc/devastar.c:836,842 – 1994/1120/sys/src/9/pc/devastar.c:842,849
1994/1115		a->memsize = a->ramsize; /* enable ISA access to first 16k */ outb(a->port+ISActl2, ISAmen);
1994/1120		a->page = -1; setpage(a, 0);
1994/1115
1994/1113		} else if(strncmp(cmsg, "run", 3) == 0){
1994/1115		/* start up downloaded program */
1994/1120/sys/src/9/pc/devastar.c:43,49 – 1994/1121/sys/src/9/pc/devastar.c:43,49 (short | long)
1994/1106		ISA186ien= 1<<7, /* I186 irq enable bit state */ ISA186idata= 1<<6, /* I186 irq data bit state */
1994/1107		ISAmen= 1<<4, /* enable memory to respond to ISA cycles */
1994/1120		ISAmbank= 0xf<<0, /* shift for 4 bit memory bank */
1994/1121		ISAmbank= 0xf<<0, /* shift for 4 bit memory bank */
1994/1107		ISAmaddr= 3, /* bits 14-19 of the boards mem address */
1994/1106		ISAstat1= 4, /* board status (1 bit per channel) */ ISAstat2= 5, /* board status (1 bit per channel) */
1994/1120/sys/src/9/pc/devastar.c:254,267 – 1994/1121/sys/src/9/pc/devastar.c:254,270
1994/1106		/* host per channel info */ struct Astarchan {
1994/1114		QLock; /* lock for rendez */ Rendez r; /* waiting for command completion */
1994/1121		QLock; /* lock for rendez */ Rendez r; /* waiting for command completion */
1994/1106
1994/1109		Astar *a; /* controller */
1994/1113		CCB *ccb; /* channel control block */
1994/1121		Astar *a; /* controller */ CCB *ccb; /* channel control block */
1994/1111		int perm;
1994/1112		int opens;
1994/1116		int baud;
1994/1121		int baud; /* baud rate */ int framing; /* framing errors */ int overrun; /* overruns */ int dtr; /* non-zero means dtr on */
1994/1107
1994/1106		Queue *iq; Queue *oq;
1994/1120/sys/src/9/pc/devastar.c:297,310 – 1994/1121/sys/src/9/pc/devastar.c:300,312
1994/1114		static void
1994/1113		setpage(Astar *a, ulong offset) {
1994/1120		int i, c;
1994/1121		int i;
1994/1113		i = APAGE(offset); if(i == a->page) return;
1994/1120		c = inb(a->port+ISActl2) & ~ISAmbank; outb(a->port+ISActl2, ISAmen|i|c);
1994/1121		outb(a->port+ISActl2, ISAmen|i);
1994/1113		a->page = i; }
1994/1120/sys/src/9/pc/devastar.c:346,362 – 1994/1121/sys/src/9/pc/devastar.c:348,364
1994/1111		t = i%3; switch(t){ case 0:
1994/1118		sprint(db->name, "eia%d%2.2d", dev, ch);
1994/1121		sprint(db->name, "eia%d%2.2d", astar[dev]->id, ch);
1994/1111		db->mode = astar[dev]->c[ch].perm;
1994/1115		db->qid.path = QID(dev, ch, Qdata);
1994/1111		break; case 1:
1994/1118		sprint(db->name, "eia%d%2.2dctl", dev, ch);
1994/1121		sprint(db->name, "eia%d%2.2dctl", astar[dev]->id, ch);
1994/1111		db->mode = astar[dev]->c[ch].perm;
1994/1115		db->qid.path = QID(dev, ch, Qctl);
1994/1111		break; case 2:
1994/1118		sprint(db->name, "eia%d%2.2dstat", dev, ch);
1994/1121		sprint(db->name, "eia%d%2.2dstat", astar[dev]->id, ch);
1994/1111		db->mode = 0444;
1994/1115		db->qid.path = QID(dev, ch, Qstat);
1994/1111		break;
1994/1120/sys/src/9/pc/devastar.c:385,391 – 1994/1121/sys/src/9/pc/devastar.c:387,393
1994/1106		void
1994/1107		astarreset(void)
1994/1106		{
1994/1115		int i, c;
1994/1121		int i;
1994/1107		Astar *a;
1994/1106		for(i = 0; i < Maxcard; i++){
1994/1120/sys/src/9/pc/devastar.c:421,426 – 1994/1121/sys/src/9/pc/devastar.c:423,431
1994/1107		}
1994/1120		print("serial%d avanstar port 0x%lux addr %lux irq %d\n", a->id, a->port,
1994/1115		a->addr, a->irq);
1994/1121		print("\tctl1 %ux ctl2 %ux maddr %ux stat1 %ux stat2 %ux\n", inb(a->port+ISActl1), inb(a->port+ISActl2), inb(a->port+ISAmaddr), inb(a->port+ISAstat1), inb(a->port+ISAstat2));
1994/1109		nastar++;
1994/1107		} }
1994/1120/sys/src/9/pc/devastar.c:445,451 – 1994/1121/sys/src/9/pc/devastar.c:450,456
1994/1109		static int
1994/1107		astarsetup(Astar *a) {
1994/1120		int i, c, found;
1994/1121		int i, found;
1994/1107		/* see if the card exists */ found = 0;
1994/1120/sys/src/9/pc/devastar.c:476,494 – 1994/1121/sys/src/9/pc/devastar.c:481,494
1994/1120		a->gcb = (GCB*)(KZERO | a->mem); a->addr = (uchar*)(KZERO | a->mem); /* set up interrupt level, reset processor, leave interrupts off */ c = inb(a->port+ISActl1); c &= ~(ISAnotdl|ISAien|ISAirq); c |= isairqcode[a->irq]; outb(a->port+ISActl1, c); setvec(Int0vec + a->irq, astarintr, a);                  /* disable ISA memory response */ c = inb(a->port+ISActl2); outb(a->port+ISActl2, c & ~ISAmen);
1994/1121		outb(a->port+ISActl2, 0);
1994/1120		a->memsize = 0; a->page = -1;
1994/1121		/* reset processor */ outb(a->port+ISActl1, 0);
1994/1111		return 0; }
1994/1120/sys/src/9/pc/devastar.c:648,653 – 1994/1121/sys/src/9/pc/devastar.c:648,682
1994/1113		return readstr(offset, buf, n, s); }
1994/1121		static long statread(Astarchan *ac, void *buf, long n, ulong offset) { char s[128]; int mstat, bstat; LOCKPAGE(ac->a, 0); mstat = LEUS(ac->ccb->mstat); bstat = LEUS(ac->ccb->bstat); UNLOCKPAGE(ac->a); /* CCB.mstat fields */ sprint(s, "ferr %d oerr %d baud %d", ac->framing, ac->overrun, ac->baud); if(mstat & Cctsstat) strcat(s, " cts"); if(mstat & Cdsrstat) strcat(s, " dsr"); if(mstat & Cristat) strcat(s, " ring"); if(mstat & Cdcdstat) strcat(s, " dcd"); if(ac->opens) strcat(s, " dtr"); if((bstat & Crbrts) == 0) strcat(s, " rts"); return readstr(offset, buf, n, s); }
1994/1111		long astarread(Chan *c, void *buf, long n, ulong offset) {
1994/1120/sys/src/9/pc/devastar.c:658,663 – 1994/1121/sys/src/9/pc/devastar.c:687,695
1994/1111		return devdirread(c, buf, n, 0, 0, astargen); switch(TYPE(c->qid.path)){
1994/1121		case Qstat: a = astar[BOARD(c->qid.path)]; return statread(a->c + CHAN(c->qid.path), buf, n, offset);
1994/1111		case Qmem:
1994/1113		return memread(astar[BOARD(c->qid.path)], buf, n, offset); case Qbctl:
1994/1120/sys/src/9/pc/devastar.c:731,737 – 1994/1121/sys/src/9/pc/devastar.c:763,768
1994/1113		error(Eio); /* take board out of download mode and enable IRQ */
1994/1119		print("out of download\n");
1994/1120		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c|ISAien|ISAnotdl);
1994/1113		a->memsize = a->ramsize;
1994/1120/sys/src/9/pc/devastar.c:739,747 – 1994/1121/sys/src/9/pc/devastar.c:770,779
1994/1116		a->needpage = 0; else a->needpage = 1;
1994/1121		a->page = -1; setpage(a, 0);
1994/1113		/* wait for control program to signal life */
1994/1119		print("waiting for cp\n");
1994/1113		for(i = 0; i < 21; i++){ if(inb(a->port+ISActl1) & ISApr) break;
1994/1120/sys/src/9/pc/devastar.c:788,804 – 1994/1121/sys/src/9/pc/devastar.c:820,832
1994/1112		}
1994/1113		}
1994/1116
1994/1119		/* enable control program interrupt generation */ a->gcb->cmd2 = LEUS(Gintack);
1994/1116		UNLOCKPAGE(a);
1994/1114		poperror();
1994/1119		print("setting up channels\n");
1994/1113		/* setup the channels */ a->running = 1; a->nchan = i; a->c = xalloc(a->nchan * sizeof(Astarchan));
1994/1121		a->c = smalloc(a->nchan * sizeof(Astarchan));
1994/1113		for(i = 0; i < a->nchan; i++){
1994/1114		ac = &a->c[i]; ac->a = a;
1994/1120/sys/src/9/pc/devastar.c:808,813 – 1994/1121/sys/src/9/pc/devastar.c:836,854
1994/1114		ac->oq = qopen(4*1024, 0, astarkick, ac);
1994/1113		x += sz; }
1994/1121		/* set up interrupt level, enable interrupts */ c = inb(a->port+ISActl1); c &= ~ISAirq; c |= ISAien|isairqcode[a->irq]; outb(a->port+ISActl1, c); setvec(Int0vec + a->irq, astarintr, a); /* enable control program interrupt generation */ LOCKPAGE(a, 0); a->gcb->cmd2 = LEUS(Gintack); UNLOCKPAGE(a);
1994/1113		}
1994/1115		static void
1994/1120/sys/src/9/pc/devastar.c:1006,1011 – 1994/1121/sys/src/9/pc/devastar.c:1047,1053
1994/1114		n |= Cdtrctl; else n &= ~Cdtrctl;
1994/1121		ac->dtr = n;
1994/1114		ccb->mctl = LEUS(n);
1994/1112		break;
1994/1113		case 'f':
1994/1120/sys/src/9/pc/devastar.c:1300,1314 – 1994/1121/sys/src/9/pc/devastar.c:1342,1356
1994/1114		Astar *a = arg; Astarchan *ac; ulong vec, invec, outvec, errvec, mvec, cmdvec;
1994/1121		int c;
1994/1114		USED(ur);
1994/1121		if(a->running == 0) panic("astar interrupt but cp not running\n");
1994/1114		lock(&a->pagelock);
1994/1116		if(a->needpage) setpage(a, 0);
1994/1119		if(a->running == 0){ print("astar interrupt but cp not running\n"); return; }
1994/1114		/* get causes */ invec = LEUS(xchgw(&a->gcb->inserv, 0));
1994/1120/sys/src/9/pc/devastar.c:1318,1324 – 1994/1121/sys/src/9/pc/devastar.c:1360,1365
1994/1114		cmdvec = LEUS(xchgw(&a->gcb->cmdserv, 0));
1994/1115		USED(mvec); USED(cmdvec); USED(errvec);
1994/1114		/* reenable interrupts */
1994/1115		a->gcb->cmd2 = LEUS(Gintack);
1994/1120/sys/src/9/pc/devastar.c:1340,1345 – 1994/1121/sys/src/9/pc/devastar.c:1381,1395
1994/1115		for(vec = cmdvec; vec; vec >>= 1){
1994/1114		if(vec&1) wakeup(&ac->r);
1994/1121		ac++; } ac = a->c; for(vec = errvec; vec; vec >>= 1){ c = LEUS(ac->ccb->errstat); if(c & Cframing) ac->framing++; if(c & Coverrun) ac->overrun++;
1994/1114		ac++; } unlock(&a->pagelock);
1994/1121/sys/src/9/pc/devastar.c:265,270 – 1994/1122/sys/src/9/pc/devastar.c:265,271 (short | long)
1994/1121		int framing; /* framing errors */ int overrun; /* overruns */ int dtr; /* non-zero means dtr on */
1994/1122		int rts; /* non-zero means rts on */
1994/1107
1994/1106		Queue *iq; Queue *oq;
1994/1121/sys/src/9/pc/devastar.c:282,289 – 1994/1122/sys/src/9/pc/devastar.c:283,290
1994/1111		Qstat, }; #define TYPE(x) ((x)&0xff) #define BOARD(x) ((((x)&~CHDIR)>>16)&0xff) #define CHAN(x) ((((x)&~CHDIR)>>8)&0xff)
1994/1122		#define BOARD(x) (((x)>>16)&0xff) #define CHAN(x) (((x)>>8)&0xff)
1994/1111		#define QID(b,c,t) (((b)<<16)|((c)<<8)|(t))
1994/1114		static int astarsetup(Astar*);
1994/1121/sys/src/9/pc/devastar.c:576,582 – 1994/1122/sys/src/9/pc/devastar.c:577,583
1994/1115		qunlock(ac);
1994/1114		nexterror();
1994/1112		}
1994/1115		if(--ac->opens == 0){
1994/1122		if(--(ac->opens) == 0){
1994/1114		disable(ac);
1994/1115		qclose(ac->iq); qclose(ac->oq);
1994/1121/sys/src/9/pc/devastar.c:660,666 – 1994/1122/sys/src/9/pc/devastar.c:661,668
1994/1121		UNLOCKPAGE(ac->a); /* CCB.mstat fields */ sprint(s, "ferr %d oerr %d baud %d", ac->framing, ac->overrun, ac->baud);
1994/1122		sprint(s, "opens %d ferr %d oerr %d baud %d", ac->opens, ac->framing, ac->overrun, ac->baud);
1994/1121		if(mstat & Cctsstat) strcat(s, " cts"); if(mstat & Cdsrstat)
1994/1121/sys/src/9/pc/devastar.c:669,678 – 1994/1122/sys/src/9/pc/devastar.c:671,681
1994/1121		strcat(s, " ring"); if(mstat & Cdcdstat) strcat(s, " dcd"); if(ac->opens)
1994/1122		if(ac->dtr)
1994/1121		strcat(s, " dtr"); if((bstat & Crbrts) == 0)
1994/1122		if(ac->rts && (bstat & Crbrts) == 0)
1994/1121		strcat(s, " rts");
1994/1122		strcat(s, "\n");
1994/1121		return readstr(offset, buf, n, s); }
1994/1121/sys/src/9/pc/devastar.c:831,836 – 1994/1122/sys/src/9/pc/devastar.c:834,840
1994/1114		ac = &a->c[i]; ac->a = a; ac->ccb = (CCB*)x;
1994/1122		ac->baud = 9600; /* a100i default */
1994/1115		ac->perm = 0660;
1994/1116		ac->iq = qopen(4*1024, 0, astarkickin, ac);
1994/1114		ac->oq = qopen(4*1024, 0, astarkick, ac);
1994/1121/sys/src/9/pc/devastar.c:960,966 – 1994/1122/sys/src/9/pc/devastar.c:964,969
1994/1116		UNLOCKPAGE(a);
1994/1115		chancmd(ac, Cconfall);
1994/1114		astarctl(ac, "b9600"); astarctl(ac, "l8"); astarctl(ac, "p0"); astarctl(ac, "d1");
1994/1121/sys/src/9/pc/devastar.c:1047,1053 – 1994/1122/sys/src/9/pc/devastar.c:1050,1056
1994/1114		n |= Cdtrctl; else n &= ~Cdtrctl;
1994/1121		ac->dtr = n;
1994/1122		ac->dtr = i;
1994/1114		ccb->mctl = LEUS(n);
1994/1112		break;
1994/1113		case 'f':
1994/1121/sys/src/9/pc/devastar.c:1126,1131 – 1994/1122/sys/src/9/pc/devastar.c:1129,1135
1994/1114		else n &= ~Crtsctl; ccb->mctl = LEUS(n);
1994/1122		ac->rts = i;
1994/1113		break; case 'Q': case 'q':
1994/1122/sys/src/9/pc/devastar.c:417,422 – 1994/1210/sys/src/9/pc/devastar.c:417,425 (short | long)
1994/1107		a->irq = 15; a->id = i;
1994/1210		if(isaget(a->mem, Pagesize, 0) == 0) panic("astarreset: %lux", a->mem);
1994/1107		if(astarsetup(a) < 0){ xfree(a);
1994/1109		astar[nastar] = 0;
1994/1210/sys/src/9/pc/devastar.c:417,423 – 1994/1218/sys/src/9/pc/devastar.c:417,423 (short | long)
1994/1107		a->irq = 15; a->id = i;
1994/1210		if(isaget(a->mem, Pagesize, 0) == 0)
1994/1218		if(getisa(a->mem, Pagesize, 0) == 0)
1994/1210		panic("astarreset: %lux", a->mem);
1994/1107		if(astarsetup(a) < 0){
1994/1218/sys/src/9/pc/devastar.c:411,424 – 1995/0106/sys/src/9/pc/devastar.c:411,424 (short | long)
1994/1118		}
1994/1108
1994/1120		/* defaults */
1994/1107		if(a->mem == 0)
1994/1108		a->mem = 0xD4000;
1994/1107		if(a->irq == 0) a->irq = 15; a->id = i;
1994/1218		if(getisa(a->mem, Pagesize, 0) == 0)
1995/0106		a->mem = getisa(a->mem, Pagesize, Pagesize); if(a->mem == 0)
1994/1210		panic("astarreset: %lux", a->mem);
1995/0106		a->mem & ~KZERO;
1994/1210
1994/1107		if(astarsetup(a) < 0){ xfree(a);
1995/0106/sys/src/9/pc/devastar.c:709,714 – 1995/0108/sys/src/9/pc/devastar.c:709,720 (short | long)
1994/1113		return 0; }
1994/1112
1995/0108		Block* astarbread(Chan *c, long n, ulong offset) { return devbread(c, n, offset); }
1994/1114		/* * write ISA mapped memory */
1995/0106/sys/src/9/pc/devastar.c:1198,1203 – 1995/0108/sys/src/9/pc/devastar.c:1204,1215
1994/1111		}
1994/1109		return 0;
1995/0108		} long astarbwrite(Chan *c, Block *bp, ulong offset) { return devbwrite(c, bp, offset);
1994/1112		} void
1995/0108/sys/src/9/pc/devastar.c:418,424 – 1995/0115/sys/src/9/pc/devastar.c:418,424 (short | long)
1995/0106		a->mem = getisa(a->mem, Pagesize, Pagesize); if(a->mem == 0)
1994/1210		panic("astarreset: %lux", a->mem);
1995/0106		a->mem & ~KZERO;
1995/0115		a->mem &= ~KZERO;
1994/1210
1994/1107		if(astarsetup(a) < 0){ xfree(a);
1995/0115/sys/src/9/pc/devastar.c:546,551 – 1995/0127/sys/src/9/pc/devastar.c:546,552 (short | long)
1994/1114		qlock(ac); if(waserror()){
1994/1115		qunlock(ac);
1995/0127		ac->qopens--;
1994/1114		nexterror(); }
1994/1116		if(ac->opens++ == 0){
1995/0127/sys/src/9/pc/devastar.c:546,552 – 1995/0207/sys/src/9/pc/devastar.c:546,552 (short | long)
1994/1114		qlock(ac); if(waserror()){
1994/1115		qunlock(ac);
1995/0127		ac->qopens--;
1995/0207		ac->opens--;
1994/1114		nexterror(); }
1994/1116		if(ac->opens++ == 0){
1995/0207/sys/src/9/pc/devastar.c:762,768 – 1995/0505/sys/src/9/pc/devastar.c:762,768 (short | long)
1994/1113		} /* * start control progarm
1995/0505		* start control program
1994/1113		*/ static void startcp(Astar *a)
1995/0505/sys/src/9/pc/devastar.c:1214,1222 – 1995/0726/sys/src/9/pc/devastar.c:1214,1221 (short | long)
1994/1112		} void astarcreate(Chan *c, char *name, int omode, ulong perm)
1995/0726		astarcreate(Chan*, char*, int, ulong)
1994/1112		{ USED(c, name, omode, perm); error(Eperm); }
1995/0726/sys/src/9/pc/devastar.c:6,12 – 1996/0223/sys/src/9/pc/devastar.c:6,11 (short | long)
1994/1106		#include "io.h" #include "../port/error.h" #include "devtab.h" /*
1994/1107		* Stargate's Avanstar serial board. There are ISA, EISA, microchannel
Too many diffs (26 > 25). Stopping.