Move existing boards into subdits split per arch

1 files changed, 0 insertions, 237 deletions

diff --git a/os/pc/dma.c b/os/pc/dma.c
deleted file mode 100644
index 9da7bddd..00000000
--- a/os/pc/dma.c
+++ /dev/null
@@ -1,237 +0,0 @@
-#include	"u.h"
-#include	"../port/lib.h"
-#include	"mem.h"
-#include	"dat.h"
-#include	"fns.h"
-
-typedef struct DMAport	DMAport;
-typedef struct DMA	DMA;
-typedef struct DMAxfer	DMAxfer;
-
-/*
- *  state of a dma transfer
- */
-struct DMAxfer
-{
-	ulong	bpa;		/* bounce buffer physical address */
-	void*	bva;		/* bounce buffer virtual address */
-	int	blen;		/* bounce buffer length */
-	void*	va;		/* virtual address destination/src */
-	long	len;		/* bytes to be transferred */
-	int	isread;
-};
-
-/*
- *  the dma controllers.  the first half of this structure specifies
- *  the I/O ports used by the DMA controllers.
- */
-struct DMAport
-{
-	uchar	addr[4];	/* current address (4 channels) */
-	uchar	count[4];	/* current count (4 channels) */
-	uchar	page[4];	/* page registers (4 channels) */
-	uchar	cmd;		/* command status register */
-	uchar	req;		/* request registers */
-	uchar	sbm;		/* single bit mask register */
-	uchar	mode;		/* mode register */
-	uchar	cbp;		/* clear byte pointer */
-	uchar	mc;		/* master clear */
-	uchar	cmask;		/* clear mask register */
-	uchar	wam;		/* write all mask register bit */
-};
-
-struct DMA
-{
-	DMAport;
-	int	shift;
-	Lock;
-	DMAxfer	x[4];
-};
-
-DMA dma[2] = {
-	{ 0x00, 0x02, 0x04, 0x06,
-	  0x01, 0x03, 0x05, 0x07,
-	  0x87, 0x83, 0x81, 0x82,
-	  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
-	 0 },
-
-	{ 0xc0, 0xc4, 0xc8, 0xcc,
-	  0xc2, 0xc6, 0xca, 0xce,
-	  0x8f, 0x8b, 0x89, 0x8a,
-	  0xd0, 0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc, 0xde,
-	 1 },
-};
-
-/*
- *  DMA must be in the first 16MB.  This gets called early by the
- *  initialisation routines of any devices which require DMA to ensure
- *  the allocated bounce buffers are below the 16MB limit.
- */
-int
-dmainit(int chan, int maxtransfer)
-{
-	DMA *dp;
-	DMAxfer *xp;
-	static int once;
-
-	if(once == 0){
-		if(ioalloc(0x00, 0x10, 0, "dma") < 0
-		|| ioalloc(0x80, 0x10, 0, "dma") < 0
-		|| ioalloc(0xd0, 0x10, 0, "dma") < 0)
-			panic("dmainit");
-		once = 1;
-	}
-
-	if(maxtransfer > 64*1024)
-		maxtransfer = 64*1024;
-
-	dp = &dma[(chan>>2)&1];
-	chan = chan & 3;
-	xp = &dp->x[chan];
-	if(xp->bva != nil){
-		if(xp->blen < maxtransfer)
-			return 1;
-		return 0;
-	}
-
-	xp->bva = xspanalloc(maxtransfer, BY2PG, 64*1024);
-	if(xp->bva == nil)
-		return 1;
-	xp->bpa = PADDR(xp->bva);
-	if(xp->bpa >= 16*MB){
-		/*
-		 * This will panic with the current
-		 * implementation of xspanalloc().
-		xfree(xp->bva);
-		 */
-		xp->bva = nil;
-		return 1;
-	}
-	xp->blen = maxtransfer;
-	xp->len = 0;
-	xp->isread = 0;
-
-	return 0;
-}
-
-/*
- *  setup a dma transfer.  if the destination is not in kernel
- *  memory, allocate a page for the transfer.
- *
- *  we assume BIOS has set up the command register before we
- *  are booted.
- *
- *  return the updated transfer length (we can't transfer across 64k
- *  boundaries)
- */
-long
-dmasetup(int chan, void *va, long len, int isread)
-{
-	DMA *dp;
-	ulong pa;
-	uchar mode;
-	DMAxfer *xp;
-
-	dp = &dma[(chan>>2)&1];
-	chan = chan & 3;
-	xp = &dp->x[chan];
-
-	/*
-	 *  if this isn't kernel memory or crossing 64k boundary or above 16 meg
-	 *  use the bounce buffer.
-	 */
-	pa = PADDR(va);
-	if((((ulong)va)&0xF0000000) != KZERO
-	|| (pa&0xFFFF0000) != ((pa+len)&0xFFFF0000)
-	|| pa >= 16*MB) {
-		if(xp->bva == nil)
-			return -1;
-		if(len > xp->blen)
-			len = xp->blen;
-		if(!isread)
-			memmove(xp->bva, va, len);
-		xp->va = va;
-		xp->len = len;
-		xp->isread = isread;
-		pa = xp->bpa;
-	}
-	else
-		xp->len = 0;
-
-	/*
-	 * this setup must be atomic
-	 */
-	ilock(dp);
-	mode = (isread ? 0x44 : 0x48) | chan;
-	outb(dp->mode, mode);	/* single mode dma (give CPU a chance at mem) */
-	outb(dp->page[chan], pa>>16);
-	outb(dp->cbp, 0);		/* set count & address to their first byte */
-	outb(dp->addr[chan], pa>>dp->shift);		/* set address */
-	outb(dp->addr[chan], pa>>(8+dp->shift));
-	outb(dp->count[chan], (len>>dp->shift)-1);		/* set count */
-	outb(dp->count[chan], ((len>>dp->shift)-1)>>8);
-	outb(dp->sbm, chan);		/* enable the channel */
-	iunlock(dp);
-
-	return len;
-}
-
-int
-dmadone(int chan)
-{
-	DMA *dp;
-
-	dp = &dma[(chan>>2)&1];
-	chan = chan & 3;
-
-	return inb(dp->cmd) & (1<<chan);
-}
-
-/*
- *  this must be called after a dma has been completed.
- *
- *  if a page has been allocated for the dma,
- *  copy the data into the actual destination
- *  and free the page.
- */
-void
-dmaend(int chan)
-{
-	DMA *dp;
-	DMAxfer *xp;
-
-	dp = &dma[(chan>>2)&1];
-	chan = chan & 3;
-
-	/*
-	 *  disable the channel
-	 */
-	ilock(dp);
-	outb(dp->sbm, 4|chan);
-	iunlock(dp);
-
-	xp = &dp->x[chan];
-	if(xp->len == 0 || !xp->isread)
-		return;
-
-	/*
-	 *  copy out of temporary page
-	 */
-	memmove(xp->va, xp->bva, xp->len);
-	xp->len = 0;
-}
-
-/*
-int
-dmacount(int chan)
-{
-	int     retval;
-	DMA     *dp;
- 
-	dp = &dma[(chan>>2)&1];
-	outb(dp->cbp, 0);
-	retval = inb(dp->count[chan]);
-	retval |= inb(dp->count[chan]) << 8;
-	return((retval<<dp->shift)+1);
-}
- */