1 files changed, 0 insertions, 841 deletions

diff --git a/package/linux/kernel-source/drivers/net/hnd/hnddma.c b/package/linux/kernel-source/drivers/net/hnd/hnddma.c
deleted file mode 100644
index ab87e4e2df..0000000000
--- a/package/linux/kernel-source/drivers/net/hnd/hnddma.c
+++ /dev/null
@@ -1,841 +0,0 @@
-/*
- * Generic Broadcom Home Networking Division (HND) DMA module.
- * This supports the following chips: BCM42xx, 44xx, 47xx .
- *
- * Copyright 2004, Broadcom Corporation
- * All Rights Reserved.
- * 
- * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
- * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
- * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
- *
- * $Id$
- */
-
-#include <typedefs.h>
-#include <osl.h>
-#include <bcmendian.h>
-#include <bcmutils.h>
-
-struct dma_info;	/* forward declaration */
-#define di_t struct dma_info
-#include <hnddma.h>
-
-/* debug/trace */
-#define	DMA_ERROR(args)
-#define	DMA_TRACE(args)
-
-/* default dma message level(if input msg_level pointer is null in dma_attach()) */
-static uint dma_msg_level = 0;
-
-#define	MAXNAMEL	8
-#define	MAXDD		(DMAMAXRINGSZ / sizeof (dmadd_t))
-
-/* dma engine software state */
-typedef struct dma_info {
-	hnddma_t	hnddma;		/* exported structure */
-	uint		*msg_level;	/* message level pointer */
-
-	char		name[MAXNAMEL];	/* callers name for diag msgs */
-	void		*drv;		/* driver handle */
-	void		*dev;		/* device handle */
-	dmaregs_t	*regs;		/* dma engine registers */
-
-	dmadd_t		*txd;		/* pointer to chip-specific tx descriptor ring */
-	uint		txin;		/* index of next descriptor to reclaim */
-	uint		txout;		/* index of next descriptor to post */
-	uint		txavail;	/* # free tx descriptors */
-	void		*txp[MAXDD];	/* parallel array of pointers to packets */
-	ulong		txdpa;		/* physical address of descriptor ring */
-	uint		txdalign;	/* #bytes added to alloc'd mem to align txd */
-
-	dmadd_t		*rxd;		/* pointer to chip-specific rx descriptor ring */
-	uint		rxin;		/* index of next descriptor to reclaim */
-	uint		rxout;		/* index of next descriptor to post */
-	void		*rxp[MAXDD];	/* parallel array of pointers to packets */
-	ulong		rxdpa;		/* physical address of descriptor ring */
-	uint		rxdalign;	/* #bytes added to alloc'd mem to align rxd */
-
-	/* tunables */
-	uint		ntxd;		/* # tx descriptors */
-	uint		nrxd;		/* # rx descriptors */
-	uint		rxbufsize;	/* rx buffer size in bytes */
-	uint		nrxpost;	/* # rx buffers to keep posted */
-	uint		rxoffset;	/* rxcontrol offset */
-	uint		ddoffset;	/* add to get dma address of descriptor ring */
-	uint		dataoffset;	/* add to get dma address of data buffer */
-} dma_info_t;
-
-/* descriptor bumping macros */
-#define	TXD(x)		((x) & (di->ntxd - 1))
-#define	RXD(x)		((x) & (di->nrxd - 1))
-#define	NEXTTXD(i)	TXD(i + 1)
-#define	PREVTXD(i)	TXD(i - 1)
-#define	NEXTRXD(i)	RXD(i + 1)
-#define	NTXDACTIVE(h, t)	TXD(t - h)
-#define	NRXDACTIVE(h, t)	RXD(t - h)
-
-/* macros to convert between byte offsets and indexes */
-#define	B2I(bytes)	((bytes) / sizeof (dmadd_t))
-#define	I2B(index)	((index) * sizeof (dmadd_t))
-
-void*
-dma_attach(void *drv, void *dev, char *name, dmaregs_t *regs, uint ntxd, uint nrxd,
-	uint rxbufsize, uint nrxpost, uint rxoffset, uint ddoffset, uint dataoffset, uint *msg_level)
-{
-	dma_info_t *di;
-	void *va;
-
-	ASSERT(ntxd <= MAXDD);
-	ASSERT(nrxd <= MAXDD);
-
-	/* allocate private info structure */
-	if ((di = MALLOC(sizeof (dma_info_t))) == NULL)
-		return (NULL);
-	bzero((char*)di, sizeof (dma_info_t));
-
-	/* set message level */
-	di->msg_level = msg_level ? msg_level : &dma_msg_level;
-
-	DMA_TRACE(("%s: dma_attach: drv 0x%x dev 0x%x regs 0x%x ntxd %d nrxd %d rxbufsize %d nrxpost %d rxoffset %d ddoffset 0x%x dataoffset 0x%x\n", name, (uint)drv, (uint)dev, (uint)regs, ntxd, nrxd, rxbufsize, nrxpost, rxoffset, ddoffset, dataoffset));
-
-	/* make a private copy of our callers name */
-	strncpy(di->name, name, MAXNAMEL);
-	di->name[MAXNAMEL-1] = '\0';
-
-	di->drv = drv;
-	di->dev = dev;
-	di->regs = regs;
-
-	/* allocate transmit descriptor ring */
-	if (ntxd) {
-		if ((va = DMA_ALLOC_CONSISTENT(dev, (DMAMAXRINGSZ + DMARINGALIGN), &di->txdpa)) == NULL)
-			goto fail;
-		di->txd = (dmadd_t*) ROUNDUP(va, DMARINGALIGN);
-		di->txdalign = ((uint)di->txd - (uint)va);
-		di->txdpa = di->txdpa + di->txdalign;
-		ASSERT(ISALIGNED(di->txd, DMARINGALIGN));
-	}
-
-	/* allocate receive descriptor ring */
-	if (nrxd) {
-		if ((va = DMA_ALLOC_CONSISTENT(dev, (DMAMAXRINGSZ + DMARINGALIGN), &di->rxdpa)) == NULL)
-			goto fail;
-		di->rxd = (dmadd_t*) ROUNDUP(va, DMARINGALIGN);
-		di->rxdalign = ((uint)di->rxd - (uint)va);
-		di->rxdpa = di->rxdpa + di->rxdalign;
-		ASSERT(ISALIGNED(di->rxd, DMARINGALIGN));
-	}
-
-	/* save tunables */
-	di->ntxd = ntxd;
-	di->nrxd = nrxd;
-	di->rxbufsize = rxbufsize;
-	di->nrxpost = nrxpost;
-	di->rxoffset = rxoffset;
-	di->ddoffset = ddoffset;
-	di->dataoffset = dataoffset;
-
-	return ((void*)di);
-
-fail:
-	dma_detach((void*)di);
-	return (NULL);
-}
-
-/* may be called with core in reset */
-void
-dma_detach(dma_info_t *di)
-{
-	if (di == NULL)
-		return;
-
-	DMA_TRACE(("%s: dma_detach\n", di->name));
-
-	/* shouldn't be here if descriptors are unreclaimed */
-	ASSERT(di->txin == di->txout);
-	ASSERT(di->rxin == di->rxout);
-
-	/* free dma descriptor rings */
-	if (di->txd)
-		DMA_FREE_CONSISTENT(di->dev, (void *)((uint)di->txd - di->txdalign), (DMAMAXRINGSZ + DMARINGALIGN), di->txdpa);
-	if (di->rxd)
-		DMA_FREE_CONSISTENT(di->dev, (void *)((uint)di->rxd - di->rxdalign), (DMAMAXRINGSZ + DMARINGALIGN), di->rxdpa);
-
-	/* free our private info structure */
-	MFREE((void*)di, sizeof (dma_info_t));
-}
-
-
-void
-dma_txreset(dma_info_t *di)
-{
-	uint32 status;
-
-	DMA_TRACE(("%s: dma_txreset\n", di->name));
-
-	/* suspend tx DMA first */
-	W_REG(&di->regs->xmtcontrol, XC_SE);
-	SPINWAIT((status = (R_REG(&di->regs->xmtstatus) & XS_XS_MASK)) != XS_XS_DISABLED &&
-		 status != XS_XS_IDLE &&
-		 status != XS_XS_STOPPED,
-		 10000);
-
-	W_REG(&di->regs->xmtcontrol, 0);
-	SPINWAIT((status = (R_REG(&di->regs->xmtstatus) & XS_XS_MASK)) != XS_XS_DISABLED,
-		 10000);
-
-	if (status != XS_XS_DISABLED) {
-		DMA_ERROR(("%s: dma_txreset: dma cannot be stopped\n", di->name));
-	}
-
-	/* wait for the last transaction to complete */
-	OSL_DELAY(300);
-}
-
-void
-dma_rxreset(dma_info_t *di)
-{
-	uint32 status;
-
-	DMA_TRACE(("%s: dma_rxreset\n", di->name));
-
-	W_REG(&di->regs->rcvcontrol, 0);
-	SPINWAIT((status = (R_REG(&di->regs->rcvstatus) & RS_RS_MASK)) != RS_RS_DISABLED,
-		 10000);
-
-	if (status != RS_RS_DISABLED) {
-		DMA_ERROR(("%s: dma_rxreset: dma cannot be stopped\n", di->name));
-	}
-}
-
-void
-dma_txinit(dma_info_t *di)
-{
-	DMA_TRACE(("%s: dma_txinit\n", di->name));
-
-	di->txin = di->txout = 0;
-	di->txavail = di->ntxd - 1;
-
-	/* clear tx descriptor ring */
-	BZERO_SM((void*)di->txd, (di->ntxd * sizeof (dmadd_t)));
-
-	W_REG(&di->regs->xmtcontrol, XC_XE);
-	W_REG(&di->regs->xmtaddr, (di->txdpa + di->ddoffset));
-}
-
-bool
-dma_txenabled(dma_info_t *di)
-{
-	uint32 xc;
-
-	/* If the chip is dead, it is not enabled :-) */
-	xc = R_REG(&di->regs->xmtcontrol);
-	return ((xc != 0xffffffff) && (xc & XC_XE));
-}
-
-void
-dma_txsuspend(dma_info_t *di)
-{
-	DMA_TRACE(("%s: dma_txsuspend\n", di->name));
-	OR_REG(&di->regs->xmtcontrol, XC_SE);
-}
-
-void
-dma_txresume(dma_info_t *di)
-{
-	DMA_TRACE(("%s: dma_txresume\n", di->name));
-	AND_REG(&di->regs->xmtcontrol, ~XC_SE);
-}
-
-bool
-dma_txsuspended(dma_info_t *di)
-{
-	if (!(R_REG(&di->regs->xmtcontrol) & XC_SE))
-		return 0;
-	
-	if ((R_REG(&di->regs->xmtstatus) & XS_XS_MASK) != XS_XS_IDLE)
-		return 0;
-
-	OSL_DELAY(2);
-	return ((R_REG(&di->regs->xmtstatus) & XS_XS_MASK) == XS_XS_IDLE);
-}
-
-bool
-dma_txstopped(dma_info_t *di)
-{
-	return ((R_REG(&di->regs->xmtstatus) & XS_XS_MASK) == XS_XS_STOPPED);
-}
-
-bool
-dma_rxstopped(dma_info_t *di)
-{
-	return ((R_REG(&di->regs->rcvstatus) & RS_RS_MASK) == RS_RS_STOPPED);
-}
-
-void
-dma_fifoloopbackenable(dma_info_t *di)
-{
-	DMA_TRACE(("%s: dma_fifoloopbackenable\n", di->name));
-	OR_REG(&di->regs->xmtcontrol, XC_LE);
-}
-
-void
-dma_rxinit(dma_info_t *di)
-{
-	DMA_TRACE(("%s: dma_rxinit\n", di->name));
-
-	di->rxin = di->rxout = 0;
-
-	/* clear rx descriptor ring */
-	BZERO_SM((void*)di->rxd, (di->nrxd * sizeof (dmadd_t)));
-
-	dma_rxenable(di);
-	W_REG(&di->regs->rcvaddr, (di->rxdpa + di->ddoffset));
-}
-
-void
-dma_rxenable(dma_info_t *di)
-{
-	DMA_TRACE(("%s: dma_rxenable\n", di->name));
-	W_REG(&di->regs->rcvcontrol, ((di->rxoffset << RC_RO_SHIFT) | RC_RE));
-}
-
-bool
-dma_rxenabled(dma_info_t *di)
-{
-	uint32 rc;
-
-	rc = R_REG(&di->regs->rcvcontrol);
-	return ((rc != 0xffffffff) && (rc & RC_RE));
-}
-
-/*
- * The BCM47XX family supports full 32bit dma engine buffer addressing so
- * dma buffers can cross 4 Kbyte page boundaries.
- */
-int
-dma_txfast(dma_info_t *di, void *p0, uint32 coreflags)
-{
-	void *p, *next;
-	uchar *data;
-	uint len;
-	uint txout;
-	uint32 ctrl;
-	uint32 pa;
-
-	DMA_TRACE(("%s: dma_txfast\n", di->name));
-
-	txout = di->txout;
-	ctrl = 0;
-
-	/*
-	 * Walk the chain of packet buffers
-	 * allocating and initializing transmit descriptor entries.
-	 */
-	for (p = p0; p; p = next) {
-		data = PKTDATA(di->drv, p);
-		len = PKTLEN(di->drv, p);
-		next = PKTNEXT(di->drv, p);
-
-		/* return nonzero if out of tx descriptors */
-		if (NEXTTXD(txout) == di->txin)
-			goto outoftxd;
-
-		if (len == 0)
-			continue;
-
-		/* get physical address of buffer start */
-		pa = (uint32) DMA_MAP(di->dev, data, len, DMA_TX, p);
-
-		/* build the descriptor control value */
-		ctrl = len & CTRL_BC_MASK;
-
-		ctrl |= coreflags;
-		
-		if (p == p0)
-			ctrl |= CTRL_SOF;
-		if (next == NULL)
-			ctrl |= (CTRL_IOC | CTRL_EOF);
-		if (txout == (di->ntxd - 1))
-			ctrl |= CTRL_EOT;
-
-		/* init the tx descriptor */
-		W_SM(&di->txd[txout].ctrl, BUS_SWAP32(ctrl));
-		W_SM(&di->txd[txout].addr, BUS_SWAP32(pa + di->dataoffset));
-
-		ASSERT(di->txp[txout] == NULL);
-
-		txout = NEXTTXD(txout);
-	}
-
-	/* if last txd eof not set, fix it */
-	if (!(ctrl & CTRL_EOF))
-		W_SM(&di->txd[PREVTXD(txout)].ctrl, BUS_SWAP32(ctrl | CTRL_IOC | CTRL_EOF));
-
-	/* save the packet */
-	di->txp[PREVTXD(txout)] = p0;
-
-	/* bump the tx descriptor index */
-	di->txout = txout;
-
-	/* kick the chip */
-	W_REG(&di->regs->xmtptr, I2B(txout));
-
-	/* tx flow control */
-	di->txavail = di->ntxd - NTXDACTIVE(di->txin, di->txout) - 1;
-
-	return (0);
-
-outoftxd:
-	DMA_ERROR(("%s: dma_txfast: out of txds\n", di->name));
-	PKTFREE(di->drv, p0, TRUE);
-	di->txavail = 0;
-	di->hnddma.txnobuf++;
-	return (-1);
-}
-
-#define	PAGESZ		4096
-#define	PAGEBASE(x)	((uint)(x) & ~4095)
-
-/*
- * Just like above except go through the extra effort of splitting
- * buffers that cross 4Kbyte boundaries into multiple tx descriptors.
- */
-int
-dma_tx(dma_info_t *di, void *p0, uint32 coreflags)
-{
-	void *p, *next;
-	uchar *data;
-	uint plen, len;
-	uchar *page, *start, *end;
-	uint txout;
-	uint32 ctrl;
-	uint32 pa;
-
-	DMA_TRACE(("%s: dma_tx\n", di->name));
-
-	txout = di->txout;
-	ctrl = 0;
-
-	/*
-	 * Walk the chain of packet buffers
-	 * splitting those that cross 4 Kbyte boundaries
-	 * allocating and initializing transmit descriptor entries.
-	 */
-	for (p = p0; p; p = next) {
-		data = PKTDATA(di->drv, p);
-		plen = PKTLEN(di->drv, p);
-		next = PKTNEXT(di->drv, p);
-
-		if (plen == 0)
-			continue;
-
-		for (page = (uchar*)PAGEBASE(data);
-			page <= (uchar*)PAGEBASE(data + plen - 1);
-			page += PAGESZ) {
-
-			/* return nonzero if out of tx descriptors */
-			if (NEXTTXD(txout) == di->txin)
-				goto outoftxd;
-
-			start = (page == (uchar*)PAGEBASE(data))?  data: page;
-			end = (page == (uchar*)PAGEBASE(data + plen))?
-				(data + plen): (page + PAGESZ);
-			len = end - start;
-
-			/* build the descriptor control value */
-			ctrl = len & CTRL_BC_MASK;
-
-			ctrl |= coreflags;
-
-			if ((p == p0) && (start == data))
-				ctrl |= CTRL_SOF;
-			if ((next == NULL) && (end == (data + plen)))
-				ctrl |= (CTRL_IOC | CTRL_EOF);
-			if (txout == (di->ntxd - 1))
-				ctrl |= CTRL_EOT;
-
-			/* get physical address of buffer start */
-			pa = (uint32) DMA_MAP(di->dev, start, len, DMA_TX, p);
-
-			/* init the tx descriptor */
-			W_SM(&di->txd[txout].ctrl, BUS_SWAP32(ctrl));
-			W_SM(&di->txd[txout].addr, BUS_SWAP32(pa + di->dataoffset));
-
-			ASSERT(di->txp[txout] == NULL);
-
-			txout = NEXTTXD(txout);
-		}
-	}
-
-	/* if last txd eof not set, fix it */
-	if (!(ctrl & CTRL_EOF))
-		W_SM(&di->txd[PREVTXD(txout)].ctrl, BUS_SWAP32(ctrl | CTRL_IOC | CTRL_EOF));
-
-	/* save the packet */
-	di->txp[PREVTXD(txout)] = p0;
-
-	/* bump the tx descriptor index */
-	di->txout = txout;
-
-	/* kick the chip */
-	W_REG(&di->regs->xmtptr, I2B(txout));
-
-	/* tx flow control */
-	di->txavail = di->ntxd - NTXDACTIVE(di->txin, di->txout) - 1;
-
-	return (0);
-
-outoftxd:
-	DMA_ERROR(("%s: dma_tx: out of txds\n", di->name));
-	PKTFREE(di->drv, p0, TRUE);
-	di->txavail = 0;
-	di->hnddma.txnobuf++;
-	return (-1);
-}
-
-/* returns a pointer to the next frame received, or NULL if there are no more */
-void*
-dma_rx(dma_info_t *di)
-{
-	void *p;
-	uint len;
-	int skiplen = 0;
-
-	while ((p = dma_getnextrxp(di, FALSE))) {
-		/* skip giant packets which span multiple rx descriptors */
-		if (skiplen > 0) {
-			skiplen -= di->rxbufsize;
-			if (skiplen < 0)
-				skiplen = 0;
-			PKTFREE(di->drv, p, FALSE);
-			continue;
-		}
-
-		len = ltoh16(*(uint16*)(PKTDATA(di->drv, p)));
-		DMA_TRACE(("%s: dma_rx len %d\n", di->name, len));
-
-		/* bad frame length check */
-		if (len > (di->rxbufsize - di->rxoffset)) {
-			DMA_ERROR(("%s: dma_rx: bad frame length (%d)\n", di->name, len));
-			if (len > 0)
-				skiplen = len - (di->rxbufsize - di->rxoffset);
-			PKTFREE(di->drv, p, FALSE);
-			di->hnddma.rxgiants++;
-			continue;
-		}
-
-		/* set actual length */
-		PKTSETLEN(di->drv, p, (di->rxoffset + len));
-
-		break;
-	}
-
-	return (p);
-}
-
-/* post receive buffers */
-void
-dma_rxfill(dma_info_t *di)
-{
-	void *p;
-	uint rxin, rxout;
-	uint ctrl;
-	uint n;
-	uint i;
-	uint32 pa;
-	uint rxbufsize;
-
-	/*
-	 * Determine how many receive buffers we're lacking
-	 * from the full complement, allocate, initialize,
-	 * and post them, then update the chip rx lastdscr.
-	 */
-
-	rxin = di->rxin;
-	rxout = di->rxout;
-	rxbufsize = di->rxbufsize;
-
-	n = di->nrxpost - NRXDACTIVE(rxin, rxout);
-
-	DMA_TRACE(("%s: dma_rxfill: post %d\n", di->name, n));
-
-	for (i = 0; i < n; i++) {
-		if ((p = PKTGET(di->drv, rxbufsize, FALSE)) == NULL) {
-			DMA_ERROR(("%s: dma_rxfill: out of rxbufs\n", di->name));
-			di->hnddma.rxnobuf++;
-			break;
-		}
-
-		*(uint32*)(OSL_UNCACHED(PKTDATA(di->drv, p))) = 0;
-
-		pa = (uint32) DMA_MAP(di->dev, PKTDATA(di->drv, p), rxbufsize, DMA_RX, p);
-		ASSERT(ISALIGNED(pa, 4));
-
-		/* save the free packet pointer */
-		ASSERT(di->rxp[rxout] == NULL);
-		di->rxp[rxout] = p;
-
-		/* prep the descriptor control value */
-		ctrl = rxbufsize;
-		if (rxout == (di->nrxd - 1))
-			ctrl |= CTRL_EOT;
-
-		/* init the rx descriptor */
-		W_SM(&di->rxd[rxout].ctrl, BUS_SWAP32(ctrl));
-		W_SM(&di->rxd[rxout].addr, BUS_SWAP32(pa + di->dataoffset));
-
-		rxout = NEXTRXD(rxout);
-	}
-
-	di->rxout = rxout;
-
-	/* update the chip lastdscr pointer */
-	W_REG(&di->regs->rcvptr, I2B(rxout));
-}
-
-void
-dma_txreclaim(dma_info_t *di, bool forceall)
-{
-	void *p;
-
-	DMA_TRACE(("%s: dma_txreclaim %s\n", di->name, forceall ? "all" : ""));
-
-	while ((p = dma_getnexttxp(di, forceall)))
-		PKTFREE(di->drv, p, TRUE);
-}
-
-/*
- * Reclaim next completed txd (txds if using chained buffers) and
- * return associated packet.
- * If 'force' is true, reclaim txd(s) and return associated packet
- * regardless of the value of the hardware "curr" pointer.
- */
-void*
-dma_getnexttxp(dma_info_t *di, bool forceall)
-{
-	uint start, end, i;
-	void *txp;
-
-	DMA_TRACE(("%s: dma_getnexttxp %s\n", di->name, forceall ? "all" : ""));
-
-	txp = NULL;
-
-	start = di->txin;
-	if (forceall)
-		end = di->txout;
-	else
-		end = B2I(R_REG(&di->regs->xmtstatus) & XS_CD_MASK);
-
-	if ((start == 0) && (end > di->txout))
-		goto bogus;
-
-	for (i = start; i != end && !txp; i = NEXTTXD(i)) {
-		DMA_UNMAP(di->dev, (BUS_SWAP32(R_SM(&di->txd[i].addr)) - di->dataoffset),
-			  (BUS_SWAP32(R_SM(&di->txd[i].ctrl)) & CTRL_BC_MASK), DMA_TX, di->txp[i]);
-		W_SM(&di->txd[i].addr, 0xdeadbeef);
-		txp = di->txp[i];
-		di->txp[i] = NULL;
-	}
-
-	di->txin = i;
-
-	/* tx flow control */
-	di->txavail = di->ntxd - NTXDACTIVE(di->txin, di->txout) - 1;
-
-	return (txp);
-
-bogus:
-/*
-	DMA_ERROR(("dma_getnexttxp: bogus curr: start %d end %d txout %d force %d\n",
-		start, end, di->txout, forceall));
-*/
-	return (NULL);
-}
-
-/* like getnexttxp but no reclaim */
-void*
-dma_peeknexttxp(dma_info_t *di)
-{
-	uint end, i;
-
-	end = B2I(R_REG(&di->regs->xmtstatus) & XS_CD_MASK);
-
-	for (i = di->txin; i != end; i = NEXTTXD(i))
-		if (di->txp[i])
-			return (di->txp[i]);
-
-	return (NULL);
-}
-
-void
-dma_rxreclaim(dma_info_t *di)
-{
-	void *p;
-
-	DMA_TRACE(("%s: dma_rxreclaim\n", di->name));
-
-	while ((p = dma_getnextrxp(di, TRUE)))
-		PKTFREE(di->drv, p, FALSE);
-}
-
-void *
-dma_getnextrxp(dma_info_t *di, bool forceall)
-{
-	uint i;
-	void *rxp;
-
-	/* if forcing, dma engine must be disabled */
-	ASSERT(!forceall || !dma_rxenabled(di));
-
-	i = di->rxin;
-
-	/* return if no packets posted */
-	if (i == di->rxout)
-		return (NULL);
-
-	/* ignore curr if forceall */
-	if (!forceall && (i == B2I(R_REG(&di->regs->rcvstatus) & RS_CD_MASK)))
-		return (NULL);
-
-	/* get the packet pointer that corresponds to the rx descriptor */
-	rxp = di->rxp[i];
-	ASSERT(rxp);
-	di->rxp[i] = NULL;
-
-	/* clear this packet from the descriptor ring */
-	DMA_UNMAP(di->dev, (BUS_SWAP32(R_SM(&di->rxd[i].addr)) - di->dataoffset),
-		  di->rxbufsize, DMA_RX, rxp);
-	W_SM(&di->rxd[i].addr, 0xdeadbeef);
-
-	di->rxin = NEXTRXD(i);
-
-	return (rxp);
-}
-
-char*
-dma_dumptx(dma_info_t *di, char *buf)
-{
-	buf += sprintf(buf, "txd 0x%lx txdpa 0x%lx txp 0x%lx txin %d txout %d txavail %d\n",
-		(ulong)di->txd, di->txdpa, (ulong)di->txp, di->txin, di->txout, di->txavail);
-	buf += sprintf(buf, "xmtcontrol 0x%x xmtaddr 0x%x xmtptr 0x%x xmtstatus 0x%x\n",
-		R_REG(&di->regs->xmtcontrol),
-		R_REG(&di->regs->xmtaddr),
-		R_REG(&di->regs->xmtptr),
-		R_REG(&di->regs->xmtstatus));
-	return (buf);
-}
-
-char*
-dma_dumprx(dma_info_t *di, char *buf)
-{
-	buf += sprintf(buf, "rxd 0x%lx rxdpa 0x%lx rxp 0x%lx rxin %d rxout %d\n",
-		(ulong)di->rxd, di->rxdpa, (ulong)di->rxp, di->rxin, di->rxout);
-	buf += sprintf(buf, "rcvcontrol 0x%x rcvaddr 0x%x rcvptr 0x%x rcvstatus 0x%x\n",
-		R_REG(&di->regs->rcvcontrol),
-		R_REG(&di->regs->rcvaddr),
-		R_REG(&di->regs->rcvptr),
-		R_REG(&di->regs->rcvstatus));
-	return (buf);
-}
-
-char*
-dma_dump(dma_info_t *di, char *buf)
-{
-	buf = dma_dumptx(di, buf);
-	buf = dma_dumprx(di, buf);
-	return (buf);
-}
-
-uint
-dma_getvar(dma_info_t *di, char *name)
-{
-	if (!strcmp(name, "&txavail"))
-		return ((uint) &di->txavail);
-	else {
-		ASSERT(0);
-	}
-	return (0);
-}
-
-void
-dma_txblock(dma_info_t *di)
-{
-	di->txavail = 0;
-}
-
-void
-dma_txunblock(dma_info_t *di)
-{
-	di->txavail = di->ntxd - NTXDACTIVE(di->txin, di->txout) - 1;
-}
-
-uint
-dma_txactive(dma_info_t *di)
-{
-	return (NTXDACTIVE(di->txin, di->txout));
-}
-
-/*
- * Rotate all active tx dma ring entries "forward" by (ActiveDescriptor - txin).
- */
-void
-dma_txrotate(di_t *di)
-{
-	uint ad;
-	uint nactive;
-	uint rot;
-	uint old, new;
-	uint32 w;
-	uint first, last;
-
-	ASSERT(dma_txsuspended(di));
-
-	nactive = dma_txactive(di);
-	ad = B2I((R_REG(&di->regs->xmtstatus) & XS_AD_MASK) >> XS_AD_SHIFT);
-	rot = TXD(ad - di->txin);
-
-	ASSERT(rot < di->ntxd);
-
-	/* full-ring case is a lot harder - don't worry about this */
-	if (rot >= (di->ntxd - nactive)) {
-		DMA_ERROR(("%s: dma_txrotate: ring full - punt\n", di->name));
-		return;
-	}
-
-	first = di->txin;
-	last = PREVTXD(di->txout);
-
-	/* move entries starting at last and moving backwards to first */
-	for (old = last; old != PREVTXD(first); old = PREVTXD(old)) {
-		new = TXD(old + rot);
-
-		/*
-		 * Move the tx dma descriptor.
-		 * EOT is set only in the last entry in the ring.
-		 */
-		w = R_SM(&di->txd[old].ctrl) & ~CTRL_EOT;
-		if (new == (di->ntxd - 1))
-			w |= CTRL_EOT;
-		W_SM(&di->txd[new].ctrl, w);
-		W_SM(&di->txd[new].addr, R_SM(&di->txd[old].addr));
-
-		/* zap the old tx dma descriptor address field */
-		W_SM(&di->txd[old].addr, 0xdeadbeef);
-
-		/* move the corresponding txp[] entry */
-		ASSERT(di->txp[new] == NULL);
-		di->txp[new] = di->txp[old];
-		di->txp[old] = NULL;
-	}
-
-	/* update txin and txout */
-	di->txin = ad;
-	di->txout = TXD(di->txout + rot);
-	di->txavail = di->ntxd - NTXDACTIVE(di->txin, di->txout) - 1;
-
-	/* kick the chip */
-	W_REG(&di->regs->xmtptr, I2B(di->txout));
-}