1996/0210/pc/devata.c (diff list | history)

1996/0112/sys/src/9/pc/devata.c:49,54 – 1996/0210/sys/src/9/pc/devata.c:49,58 (short | long | prev | next)
1995/0213		Serr= (1<<0), Pcmd= 7, /* cmd port (write) */
1996/0210		Pctrl= 0x206, /* device control, alternate status */ nIEN= (1<<1), Srst= (1<<2),
1995/0213		/* commands */
1995/1206		Cfirst= 0xFF, /* pseudo command for initialisation */
1995/0213		Cread= 0x20,
1996/0112/sys/src/9/pc/devata.c:152,158 – 1996/0210/sys/src/9/pc/devata.c:156,162
1995/0213		int pbase; /* base port */
1995/1206		uchar ctlrno; uchar noatapi;
1996/0210		uchar resetok;
1995/0213		/* * current operation
1996/0112/sys/src/9/pc/devata.c:354,360 – 1996/0210/sys/src/9/pc/devata.c:358,364
1995/1206		{ Controller *ctlr; int atapi, mask, port; uchar error, status;
1996/0210		uchar error, status, msb, lsb;
1995/1206		/* * Check the existence of a controller by verifying a sensible
1996/0112/sys/src/9/pc/devata.c:377,388 – 1996/0210/sys/src/9/pc/devata.c:381,393
1995/1206		ctlr->ctlrno = ctlrno; ctlr->lastcmd = 0xFF;
1996/0210
1995/1206		/* * Attempt to check the existence of drives on the controller * by issuing a 'check device diagnostics' command. * Issuing a device reset here would possibly destroy any BIOS * drive remapping and, anyway, some controllers (Vibra16) don't * seem to implement the control-block registers.
1996/0210		* seem to implement the control-block registers; do it if requested.
1995/1206		* Unfortunately the vector must be set at this point as the Cedd * command will generate an interrupt, which means the ataintr routine * will be left on the interrupt call chain even if there are no
1996/0112/sys/src/9/pc/devata.c:392,397 – 1996/0210/sys/src/9/pc/devata.c:397,413
1995/1206		* ATAPI signature straight off. If we find it there will be no probe * done for a slave. Tough. */
1996/0210		if(ctlr->resetok){ outb(port+Pctrl, Srst|nIEN); microdelay(1); outb(port+Pctrl, 0); if(atactlrwait(ctlr, DHmagic, 0, 100)){ DPRINT("ata%d: Srst status %ux/%ux/%ux\n", ctlrno, inb(port+Pstatus), inb(port+Pcylmsb), inb(port+Pcyllsb)); xfree(ctlr); } }
1995/1206		atapi = 0; mask = 0; status = inb(port+Pstatus);
1996/0112/sys/src/9/pc/devata.c:405,412 – 1996/0210/sys/src/9/pc/devata.c:421,428
1995/1206		goto skipedd; } if(atactlrwait(ctlr, DHmagic, 0, MS2TK(1)) || waserror()){
1995/1208		DPRINT("ata%d: Cedd status %ux/%ux/%ux\n", ctlrno, inb(port+Pstatus), inb(port+Pcylmsb), inb(port+Pcyllsb));
1996/0210		DPRINT("ata%d: Cedd status %ux/%ux/%ux\n", ctlrno, inb(port+Pstatus), inb(port+Pcylmsb), inb(port+Pcyllsb));
1995/1206		xfree(ctlr); return -1; }
1996/0112/sys/src/9/pc/devata.c:447,455 – 1996/0210/sys/src/9/pc/devata.c:463,477
1995/1206		DPRINT("ata%d: slave diag status %ux, error %ux\n", ctlr->ctlrno, status, error); if(status && (status & (Sbusy|Serr)) == 0 && (error & ~0x80) == 0x01) mask |= 0x02; else if(status == 0 && inb(port+Pcylmsb) == 0xEB && inb(port+Pcyllsb) == 0x14){ atapi |= 0x02; mask |= 0x02;
1996/0210		else if(status == 0){ msb = inb(port+Pcylmsb); lsb = inb(port+Pcyllsb); DPRINT("ata%d: ATAPI slave %uX %uX %uX\n", ctlrno, status, inb(port+Pcylmsb), inb(port+Pcyllsb)); if(msb == 0xEB && lsb == 0x14){ atapi |= 0x02; mask |= 0x02; }
1995/1206		} skipedd:
1996/0112/sys/src/9/pc/devata.c:514,521 – 1996/0210/sys/src/9/pc/devata.c:536,543
1995/1206		DPRINT("ata%d: opt spindownmask %ux\n", ctlrno, spindownmask); } else if(strcmp(isa.opt[i], "noatapi") == 0) atactlr[ctlrno]->noatapi = 1;
1996/0210		else if(strcmp(isa.opt[i], "reset") == 0) atactlr[ctlrno]->resetok = 1;
1995/1206		} }
1995/0213		}
1996/0112/sys/src/9/pc/devata.c:1091,1097 – 1996/0210/sys/src/9/pc/devata.c:1113,1122
1995/1206		IUNLOCK(&cp->reglock);
1995/0213
1995/1208		DPRINT("%s: ident command %ux sent\n", dp->vol, cmd);
1995/1209		atasleep(cp, 1000);
1996/0210		if(cmd == Cident) atasleep(cp, 3000); else atasleep(cp, 30000);
1995/0818
1995/0213		if(cp->status & Serr){
1995/1206		DPRINT("%s: bad disk ident status\n", dp->vol);