1 files changed, 0 insertions, 426 deletions
diff --git a/ANDROID_3.4.5/drivers/tty/hvc/hvsi_lib.c b/ANDROID_3.4.5/drivers/tty/hvc/hvsi_lib.c
deleted file mode 100644
index 6f4dd83d..00000000
--- a/ANDROID_3.4.5/drivers/tty/hvc/hvsi_lib.c
+++ /dev/null
@@ -1,426 +0,0 @@
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/console.h>
-#include <asm/hvsi.h>
-
-#include "hvc_console.h"
-
-static int hvsi_send_packet(struct hvsi_priv *pv, struct hvsi_header *packet)
-{
-	packet->seqno = atomic_inc_return(&pv->seqno);
-
-	/* Assumes that always succeeds, works in practice */
-	return pv->put_chars(pv->termno, (char *)packet, packet->len);
-}
-
-static void hvsi_start_handshake(struct hvsi_priv *pv)
-{
-	struct hvsi_query q;
-
-	/* Reset state */
-	pv->established = 0;
-	atomic_set(&pv->seqno, 0);
-
-	pr_devel("HVSI@%x: Handshaking started\n", pv->termno);
-
-	/* Send version query */
-	q.hdr.type = VS_QUERY_PACKET_HEADER;
-	q.hdr.len = sizeof(struct hvsi_query);
-	q.verb = VSV_SEND_VERSION_NUMBER;
-	hvsi_send_packet(pv, &q.hdr);
-}
-
-static int hvsi_send_close(struct hvsi_priv *pv)
-{
-	struct hvsi_control ctrl;
-
-	pv->established = 0;
-
-	ctrl.hdr.type = VS_CONTROL_PACKET_HEADER;
-	ctrl.hdr.len = sizeof(struct hvsi_control);
-	ctrl.verb = VSV_CLOSE_PROTOCOL;
-	return hvsi_send_packet(pv, &ctrl.hdr);
-}
-
-static void hvsi_cd_change(struct hvsi_priv *pv, int cd)
-{
-	if (cd)
-		pv->mctrl |= TIOCM_CD;
-	else {
-		pv->mctrl &= ~TIOCM_CD;
-
-		/* We copy the existing hvsi driver semantics
-		 * here which are to trigger a hangup when
-		 * we get a carrier loss.
-		 * Closing our connection to the server will
-		 * do just that.
-		 */
-		if (!pv->is_console && pv->opened) {
-			pr_devel("HVSI@%x Carrier lost, hanging up !\n",
-				 pv->termno);
-			hvsi_send_close(pv);
-		}
-	}
-}
-
-static void hvsi_got_control(struct hvsi_priv *pv)
-{
-	struct hvsi_control *pkt = (struct hvsi_control *)pv->inbuf;
-
-	switch (pkt->verb) {
-	case VSV_CLOSE_PROTOCOL:
-		/* We restart the handshaking */
-		hvsi_start_handshake(pv);
-		break;
-	case VSV_MODEM_CTL_UPDATE:
-		/* Transition of carrier detect */
-		hvsi_cd_change(pv, pkt->word & HVSI_TSCD);
-		break;
-	}
-}
-
-static void hvsi_got_query(struct hvsi_priv *pv)
-{
-	struct hvsi_query *pkt = (struct hvsi_query *)pv->inbuf;
-	struct hvsi_query_response r;
-
-	/* We only handle version queries */
-	if (pkt->verb != VSV_SEND_VERSION_NUMBER)
-		return;
-
-	pr_devel("HVSI@%x: Got version query, sending response...\n",
-		 pv->termno);
-
-	/* Send version response */
-	r.hdr.type = VS_QUERY_RESPONSE_PACKET_HEADER;
-	r.hdr.len = sizeof(struct hvsi_query_response);
-	r.verb = VSV_SEND_VERSION_NUMBER;
-	r.u.version = HVSI_VERSION;
-	r.query_seqno = pkt->hdr.seqno;
-	hvsi_send_packet(pv, &r.hdr);
-
-	/* Assume protocol is open now */
-	pv->established = 1;
-}
-
-static void hvsi_got_response(struct hvsi_priv *pv)
-{
-	struct hvsi_query_response *r =
-		(struct hvsi_query_response *)pv->inbuf;
-
-	switch(r->verb) {
-	case VSV_SEND_MODEM_CTL_STATUS:
-		hvsi_cd_change(pv, r->u.mctrl_word & HVSI_TSCD);
-		pv->mctrl_update = 1;
-		break;
-	}
-}
-
-static int hvsi_check_packet(struct hvsi_priv *pv)
-{
-	u8 len, type;
-
-	/* Check header validity. If it's invalid, we ditch
-	 * the whole buffer and hope we eventually resync
-	 */
-	if (pv->inbuf[0] < 0xfc) {
-		pv->inbuf_len = pv->inbuf_pktlen = 0;
-		return 0;
-	}
-	type = pv->inbuf[0];
-	len = pv->inbuf[1];
-
-	/* Packet incomplete ? */
-	if (pv->inbuf_len < len)
-		return 0;
-
-	pr_devel("HVSI@%x: Got packet type %x len %d bytes:\n",
-		 pv->termno, type, len);
-
-	/* We have a packet, yay ! Handle it */
-	switch(type) {
-	case VS_DATA_PACKET_HEADER:
-		pv->inbuf_pktlen = len - 4;
-		pv->inbuf_cur = 4;
-		return 1;
-	case VS_CONTROL_PACKET_HEADER:
-		hvsi_got_control(pv);
-		break;
-	case VS_QUERY_PACKET_HEADER:
-		hvsi_got_query(pv);
-		break;
-	case VS_QUERY_RESPONSE_PACKET_HEADER:
-		hvsi_got_response(pv);
-		break;
-	}
-
-	/* Swallow packet and retry */
-	pv->inbuf_len -= len;
-	memmove(pv->inbuf, &pv->inbuf[len], pv->inbuf_len);
-	return 1;
-}
-
-static int hvsi_get_packet(struct hvsi_priv *pv)
-{
-	/* If we have room in the buffer, ask HV for more */
-	if (pv->inbuf_len < HVSI_INBUF_SIZE)
-		pv->inbuf_len += pv->get_chars(pv->termno,
-					     &pv->inbuf[pv->inbuf_len],
-					     HVSI_INBUF_SIZE - pv->inbuf_len);
-	/*
-	 * If we have at least 4 bytes in the buffer, check for
-	 * a full packet and retry
-	 */
-	if (pv->inbuf_len >= 4)
-		return hvsi_check_packet(pv);
-	return 0;
-}
-
-int hvsilib_get_chars(struct hvsi_priv *pv, char *buf, int count)
-{
-	unsigned int tries, read = 0;
-
-	if (WARN_ON(!pv))
-		return -ENXIO;
-
-	/* If we aren't open, don't do anything in order to avoid races
-	 * with connection establishment. The hvc core will call this
-	 * before we have returned from notifier_add(), and we need to
-	 * avoid multiple users playing with the receive buffer
-	 */
-	if (!pv->opened)
-		return 0;
-
-	/* We try twice, once with what data we have and once more
-	 * after we try to fetch some more from the hypervisor
-	 */
-	for (tries = 1; count && tries < 2; tries++) {
-		/* Consume existing data packet */
-		if (pv->inbuf_pktlen) {
-			unsigned int l = min(count, (int)pv->inbuf_pktlen);
-			memcpy(&buf[read], &pv->inbuf[pv->inbuf_cur], l);
-			pv->inbuf_cur += l;
-			pv->inbuf_pktlen -= l;
-			count -= l;
-			read += l;
-		}
-		if (count == 0)
-			break;
-
-		/* Data packet fully consumed, move down remaning data */
-		if (pv->inbuf_cur) {
-			pv->inbuf_len -= pv->inbuf_cur;
-			memmove(pv->inbuf, &pv->inbuf[pv->inbuf_cur],
-				pv->inbuf_len);
-			pv->inbuf_cur = 0;
-		}
-
-		/* Try to get another packet */
-		if (hvsi_get_packet(pv))
-			tries--;
-	}
-	if (!pv->established) {
-		pr_devel("HVSI@%x: returning -EPIPE\n", pv->termno);
-		return -EPIPE;
-	}
-	return read;
-}
-
-int hvsilib_put_chars(struct hvsi_priv *pv, const char *buf, int count)
-{
-	struct hvsi_data dp;
-	int rc, adjcount = min(count, HVSI_MAX_OUTGOING_DATA);
-
-	if (WARN_ON(!pv))
-		return -ENODEV;
-
-	dp.hdr.type = VS_DATA_PACKET_HEADER;
-	dp.hdr.len = adjcount + sizeof(struct hvsi_header);
-	memcpy(dp.data, buf, adjcount);
-	rc = hvsi_send_packet(pv, &dp.hdr);
-	if (rc <= 0)
-		return rc;
-	return adjcount;
-}
-
-static void maybe_msleep(unsigned long ms)
-{
-	/* During early boot, IRQs are disabled, use mdelay */
-	if (irqs_disabled())
-		mdelay(ms);
-	else
-		msleep(ms);
-}
-
-int hvsilib_read_mctrl(struct hvsi_priv *pv)
-{
-	struct hvsi_query q;
-	int rc, timeout;
-
-	pr_devel("HVSI@%x: Querying modem control status...\n",
-		 pv->termno);
-
-	pv->mctrl_update = 0;
-	q.hdr.type = VS_QUERY_PACKET_HEADER;
-	q.hdr.len = sizeof(struct hvsi_query);
-	q.hdr.seqno = atomic_inc_return(&pv->seqno);
-	q.verb = VSV_SEND_MODEM_CTL_STATUS;
-	rc = hvsi_send_packet(pv, &q.hdr);
-	if (rc <= 0) {
-		pr_devel("HVSI@%x: Error %d...\n", pv->termno, rc);
-		return rc;
-	}
-
-	/* Try for up to 200ms */
-	for (timeout = 0; timeout < 20; timeout++) {
-		if (!pv->established)
-			return -ENXIO;
-		if (pv->mctrl_update)
-			return 0;
-		if (!hvsi_get_packet(pv))
-			maybe_msleep(10);
-	}
-	return -EIO;
-}
-
-int hvsilib_write_mctrl(struct hvsi_priv *pv, int dtr)
-{
-	struct hvsi_control ctrl;
-	unsigned short mctrl;
-
-	mctrl = pv->mctrl;
-	if (dtr)
-		mctrl |= TIOCM_DTR;
-	else
-		mctrl &= ~TIOCM_DTR;
-	if (mctrl == pv->mctrl)
-		return 0;
-	pv->mctrl = mctrl;
-
-	pr_devel("HVSI@%x: %s DTR...\n", pv->termno,
-		 dtr ? "Setting" : "Clearing");
-
-	ctrl.hdr.type = VS_CONTROL_PACKET_HEADER,
-	ctrl.hdr.len = sizeof(struct hvsi_control);
-	ctrl.verb = VSV_SET_MODEM_CTL;
-	ctrl.mask = HVSI_TSDTR;
-	ctrl.word = dtr ? HVSI_TSDTR : 0;
-	return hvsi_send_packet(pv, &ctrl.hdr);
-}
-
-void hvsilib_establish(struct hvsi_priv *pv)
-{
-	int timeout;
-
-	pr_devel("HVSI@%x: Establishing...\n", pv->termno);
-
-	/* Try for up to 200ms, there can be a packet to
-	 * start the process waiting for us...
-	 */
-	for (timeout = 0; timeout < 20; timeout++) {
-		if (pv->established)
-			goto established;
-		if (!hvsi_get_packet(pv))
-			maybe_msleep(10);
-	}
-
-	/* Failed, send a close connection packet just
-	 * in case
-	 */
-	pr_devel("HVSI@%x:   ... sending close\n", pv->termno);
-
-	hvsi_send_close(pv);
-
-	/* Then restart handshake */
-
-	pr_devel("HVSI@%x:   ... restarting handshake\n", pv->termno);
-
-	hvsi_start_handshake(pv);
-
-	pr_devel("HVSI@%x:   ... waiting handshake\n", pv->termno);
-
-	/* Try for up to 200s */
-	for (timeout = 0; timeout < 20; timeout++) {
-		if (pv->established)
-			goto established;
-		if (!hvsi_get_packet(pv))
-			maybe_msleep(10);
-	}
-
-	if (!pv->established) {
-		pr_devel("HVSI@%x: Timeout handshaking, giving up !\n",
-			 pv->termno);
-		return;
-	}
- established:
-	/* Query modem control lines */
-
-	pr_devel("HVSI@%x:   ... established, reading mctrl\n", pv->termno);
-
-	hvsilib_read_mctrl(pv);
-
-	/* Set our own DTR */
-
-	pr_devel("HVSI@%x:   ... setting mctrl\n", pv->termno);
-
-	hvsilib_write_mctrl(pv, 1);
-
-	/* Set the opened flag so reads are allowed */
-	wmb();
-	pv->opened = 1;
-}
-
-int hvsilib_open(struct hvsi_priv *pv, struct hvc_struct *hp)
-{
-	pr_devel("HVSI@%x: open !\n", pv->termno);
-
-	/* Keep track of the tty data structure */
-	pv->tty = tty_kref_get(hp->tty);
-
-	hvsilib_establish(pv);
-
-	return 0;
-}
-
-void hvsilib_close(struct hvsi_priv *pv, struct hvc_struct *hp)
-{
-	unsigned long flags;
-
-	pr_devel("HVSI@%x: close !\n", pv->termno);
-
-	if (!pv->is_console) {
-		pr_devel("HVSI@%x: Not a console, tearing down\n",
-			 pv->termno);
-
-		/* Clear opened, synchronize with khvcd */
-		spin_lock_irqsave(&hp->lock, flags);
-		pv->opened = 0;
-		spin_unlock_irqrestore(&hp->lock, flags);
-
-		/* Clear our own DTR */
-		if (!pv->tty || (pv->tty->termios->c_cflag & HUPCL))
-			hvsilib_write_mctrl(pv, 0);
-
-		/* Tear down the connection */
-		hvsi_send_close(pv);
-	}
-
-	if (pv->tty)
-		tty_kref_put(pv->tty);
-	pv->tty = NULL;
-}
-
-void hvsilib_init(struct hvsi_priv *pv,
-		  int (*get_chars)(uint32_t termno, char *buf, int count),
-		  int (*put_chars)(uint32_t termno, const char *buf,
-				   int count),
-		  int termno, int is_console)
-{
-	memset(pv, 0, sizeof(*pv));
-	pv->get_chars = get_chars;
-	pv->put_chars = put_chars;
-	pv->termno = termno;
-	pv->is_console = is_console;
-}