Move existing boards into subdits split per arch

1 files changed, 0 insertions, 243 deletions

diff --git a/os/mpc/spi.c b/os/mpc/spi.c
deleted file mode 100644
index ce662533..00000000
--- a/os/mpc/spi.c
+++ /dev/null
@@ -1,243 +0,0 @@
-#include "u.h"
-#include "../port/lib.h"
-#include "mem.h"
-#include "dat.h"
-#include "fns.h"
-#include "io.h"
-#include "../port/error.h"
-
-/*
- * basic read/write interface to mpc8xx Serial Peripheral Interface;
- * used by devtouch.c and devspi.c
- */
-
-typedef struct Ctlr Ctlr;
-
-enum {
-	/* spi-specific BD flags */
-	BDContin=	1<<9,	/* continuous mode */
-	RxeOV=		1<<1,	/* overrun */
-	TxeUN=		1<<1,	/* underflow */
-	BDme=		1<<0,	/* multimaster error */
-	BDrxerr=		RxeOV|BDme,
-	BDtxerr=		TxeUN|BDme,
-
-	/* spmod */
-	MLoop=	1<<14,	/* loopback mode */
-	MClockInv= 1<<13,	/* inactive state of SPICLK is high */
-	MClockPhs= 1<<12,	/* SPCLK starts toggling at beginning of transfer */
-	MDiv16=	1<<11,	/* use BRGCLK/16 as input to SPI baud rate */
-	MRev=	1<<10,	/* normal operation */
-	MMaster=	1<<9,
-	MSlave=	0<<9,
-	MEnable=	1<<8,
-	/* LEN, PS fields */
-
-	/* spcom */
-	STR=		1<<7,	/* start transmit */
-
-	/* spie */
-	MME =	1<<5,
-	TXE =	1<<4,
-	BSY =	1<<2,
-	TXB =	1<<1,
-	RXB =	1<<0,
-
-	/* port B bits */
-	SPIMISO =	IBIT(28),	/* master mode input */
-	SPIMOSI = IBIT(29),	/* master mode output */
-	SPICLK = IBIT(30),
-
-	/* maximum SPI I/O (can change) */
-	Bufsize =	64,
-};
-
-/*
- * SPI software structures
- */
-
-struct Ctlr {
-	Lock;
-	QLock	io;
-	int	init;
-	SPI*	spi;
-	IOCparam*	sp;
-
-	BD*	rd;
-	BD*	td;
-	int	phase;
-	Rendez	r;
-	char*	txbuf;
-	char*	rxbuf;
-};
-
-static	Ctlr	spictlr[1];
-
-/* dcflush isn't needed if rxbuf and txbuf allocated in uncached IMMR memory */
-#define	DCFLUSH(a,n)
-
-static	void	interrupt(Ureg*, void*);
-
-/*
- * called by the reset routine of any driver using the SPI
- */
-void
-spireset(void)
-{
-	IMM *io;
-	SPI *spi;
-	IOCparam *sp;
-	CPMdev *cpm;
-	Ctlr *ctlr;
-
-	ctlr = spictlr;
-	if(ctlr->init)
-		return;
-	ctlr->init = 1;
-	cpm = cpmdev(CPspi);
-	spi = cpm->regs;
-	ctlr->spi = spi;
-	sp = cpm->param;
-	if(sp == nil){
-		print("SPI: can't allocate new parameter memory\n");
-		return;
-	}
-	ctlr->sp = sp;
-
-	if(ctlr->rxbuf == nil)
-		ctlr->rxbuf = cpmalloc(Bufsize, 2);
-	if(ctlr->txbuf == nil)
-		ctlr->txbuf = cpmalloc(Bufsize, 2);
-
-	if(ctlr->rd == nil){
-		ctlr->rd = bdalloc(1);
-		ctlr->rd->addr = PADDR(ctlr->rxbuf);
-		ctlr->rd->length = 0;
-		ctlr->rd->status = BDWrap;
-	}
-	if(ctlr->td == nil){
-		ctlr->td = bdalloc(1);
-		ctlr->td->addr = PADDR(ctlr->txbuf);
-		ctlr->td->length = 0;
-		ctlr->td->status = BDWrap|BDLast;
-	}
-
-	/* select port pins */
-	io = ioplock();
-	io->pbdir |= SPICLK | SPIMOSI | SPIMISO;
-	io->pbpar |= SPICLK | SPIMOSI | SPIMISO;
-	iopunlock();
-
-	/* explicitly initialise parameters, because InitRxTx can't be used (see i2c/spi relocation errata) */
-	sp = ctlr->sp;
-	sp->rbase = PADDR(ctlr->rd);
-	sp->tbase = PADDR(ctlr->td);
-	sp->rfcr = 0x18;
-	sp->tfcr = 0x18;
-	sp->mrblr = Bufsize;
-	sp->rstate = 0;
-	sp->rptr = 0;
-	sp->rbptr = sp->rbase;
-	sp->rcnt = 0;
-	sp->tstate = 0;
-	sp->tbptr = sp->tbase;
-	sp->tptr = 0;
-	sp->tcnt = 0;
-	eieio();
-
-	spi->spmode = MDiv16 | MRev | MMaster | ((8-1)<<4) | 1;	/* 8 bit characters */
-	if(0)
-		spi->spmode |= MLoop;	/* internal loop back mode for testing */
-
-	spi->spie = ~0;	/* clear events */
-	eieio();
-	spi->spim = MME|TXE|BSY|TXB|RXB;
-	eieio();
-	spi->spmode |= MEnable;
-
-	intrenable(VectorCPIC+cpm->irq, interrupt, spictlr, BUSUNKNOWN, "spi");
-
-}
-
-enum {
-	Idling,
-	Waitval,
-	Readyval
-};
-
-static void
-interrupt(Ureg*, void *arg)
-{
-	int events;
-	Ctlr *ctlr;
-	SPI *spi;
-
-	ctlr = arg;
-	spi = ctlr->spi;
-	events = spi->spie;
-	eieio();
-	spi->spie = events;
-	if(events & (MME|BSY|TXE)){
-		print("SPI#%x\n", events);
-		if(ctlr->phase != Idling){
-			ctlr->phase = Idling;
-			wakeup(&ctlr->r);
-		}
-	}else if(events & RXB){
-		if(ctlr->phase == Waitval){
-			ctlr->phase = Readyval;
-			wakeup(&ctlr->r);
-		}
-	}
-}
-
-static int
-done(void *a)
-{
-	return ((Ctlr*)a)->phase != Waitval;
-}
-
-/*
- * send `nout' bytes on SPI from `out' and read as many bytes of reply into buffer `in';
- * return the number of bytes received, or -1 on error.
- */
-long
-spioutin(void *out, long nout, void *in)
-{
-	Ctlr *ctlr;
-	int nb, p;
-
-	ctlr = spictlr;
-	if(nout > Bufsize)
-		return -1;
-	qlock(&ctlr->io);
-	if(waserror()){
-		qunlock(&ctlr->io);
-		return -1;
-	}
-	if(ctlr->phase != Idling)
-		sleep(&ctlr->r, done, ctlr);
-	memmove(ctlr->txbuf, out, nout);
-	DCFLUSH(ctlr->txbuf, Bufsize);
-	DCFLUSH(ctlr->rxbuf, Bufsize);
-	ilock(ctlr);
-	ctlr->phase = Waitval;
-	ctlr->td->length = nout;
-	ctlr->rd->status = BDEmpty|BDWrap|BDInt;
-	ctlr->td->status = BDReady|BDWrap|BDLast;
-	eieio();
-	ctlr->spi->spcom = STR;
-	eieio();
-	iunlock(ctlr);
-	sleep(&ctlr->r, done, ctlr);
-	nb = ctlr->rd->length;
-	if(nb > nout)
-		nb = nout;	/* shouldn't happen */
-	p = ctlr->phase;
-	poperror();
-	qunlock(&ctlr->io);
-	if(p != Readyval)
-		return -1;
-	memmove(in, ctlr->rxbuf, nb);
-	return nb;
-}