Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 249 insertions, 0 deletions

diff --git a/qemu/roms/ipxe/src/net/infiniband/ib_packet.c b/qemu/roms/ipxe/src/net/infiniband/ib_packet.c
new file mode 100644
index 000000000..6c850e39b
--- /dev/null
+++ b/qemu/roms/ipxe/src/net/infiniband/ib_packet.c
@@ -0,0 +1,249 @@
+/*
+ * Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <byteswap.h>
+#include <ipxe/iobuf.h>
+#include <ipxe/infiniband.h>
+#include <ipxe/ib_packet.h>
+
+/**
+ * @file
+ *
+ * Infiniband Packet Formats
+ *
+ */
+
+/**
+ * Add IB headers
+ *
+ * @v ibdev		Infiniband device
+ * @v iobuf		I/O buffer to contain headers
+ * @v qp		Queue pair
+ * @v payload_len	Payload length
+ * @v dest		Destination address vector
+ * @ret rc		Return status code
+ */
+int ib_push ( struct ib_device *ibdev, struct io_buffer *iobuf,
+	      struct ib_queue_pair *qp, size_t payload_len,
+	      const struct ib_address_vector *dest ) {
+	struct ib_local_route_header *lrh;
+	struct ib_global_route_header *grh;
+	struct ib_base_transport_header *bth;
+	struct ib_datagram_extended_transport_header *deth;
+	size_t orig_iob_len = iob_len ( iobuf );
+	size_t pad_len;
+	size_t lrh_len;
+	size_t grh_len;
+	unsigned int vl;
+	unsigned int lnh;
+
+	DBGC2 ( ibdev, "IBDEV %p TX %04x:%08lx => %04x:%08lx (key %08lx)\n",
+		ibdev, ibdev->lid, qp->ext_qpn, dest->lid, dest->qpn,
+		dest->qkey );
+
+	/* Calculate packet length */
+	pad_len = ( (-payload_len) & 0x3 );
+	payload_len += pad_len;
+	payload_len += 4; /* ICRC */
+
+	/* Reserve space for headers */
+	orig_iob_len = iob_len ( iobuf );
+	deth = iob_push ( iobuf, sizeof ( *deth ) );
+	bth = iob_push ( iobuf, sizeof ( *bth ) );
+	grh_len = ( payload_len + iob_len ( iobuf ) - orig_iob_len );
+	grh = ( dest->gid_present ?
+		iob_push ( iobuf, sizeof ( *grh ) ) : NULL );
+	lrh = iob_push ( iobuf, sizeof ( *lrh ) );
+	lrh_len = ( payload_len + iob_len ( iobuf ) - orig_iob_len );
+
+	/* Construct LRH */
+	vl = ( ( qp->ext_qpn == IB_QPN_SMI ) ? IB_VL_SMP : IB_VL_DEFAULT );
+	lrh->vl__lver = ( vl << 4 );
+	lnh = ( grh ? IB_LNH_GRH : IB_LNH_BTH );
+	lrh->sl__lnh = ( ( dest->sl << 4 ) | lnh );
+	lrh->dlid = htons ( dest->lid );
+	lrh->length = htons ( lrh_len >> 2 );
+	lrh->slid = htons ( ibdev->lid );
+
+	/* Construct GRH, if required */
+	if ( grh ) {
+		grh->ipver__tclass__flowlabel =
+			htonl ( IB_GRH_IPVER_IPv6 << 28 );
+		grh->paylen = htons ( grh_len );
+		grh->nxthdr = IB_GRH_NXTHDR_IBA;
+		grh->hoplmt = 0;
+		memcpy ( &grh->sgid, &ibdev->gid, sizeof ( grh->sgid ) );
+		memcpy ( &grh->dgid, &dest->gid, sizeof ( grh->dgid ) );
+	}
+
+	/* Construct BTH */
+	bth->opcode = BTH_OPCODE_UD_SEND;
+	bth->se__m__padcnt__tver = ( pad_len << 4 );
+	bth->pkey = htons ( ibdev->pkey );
+	bth->dest_qp = htonl ( dest->qpn );
+	bth->ack__psn = htonl ( ( qp->send.psn++ ) & 0xffffffUL );
+
+	/* Construct DETH */
+	deth->qkey = htonl ( dest->qkey );
+	deth->src_qp = htonl ( qp->ext_qpn );
+
+	DBGCP_HDA ( ibdev, 0, iobuf->data,
+		    ( iob_len ( iobuf ) - orig_iob_len ) );
+
+	return 0;
+}
+
+/**
+ * Remove IB headers
+ *
+ * @v ibdev		Infiniband device
+ * @v iobuf		I/O buffer containing headers
+ * @v qp		Queue pair to fill in, or NULL
+ * @v payload_len	Payload length to fill in, or NULL
+ * @v dest		Destination address vector to fill in
+ * @v source		Source address vector to fill in
+ * @ret rc		Return status code
+ */
+int ib_pull ( struct ib_device *ibdev, struct io_buffer *iobuf,
+	      struct ib_queue_pair **qp, size_t *payload_len,
+	      struct ib_address_vector *dest,
+	      struct ib_address_vector *source ) {
+	struct ib_local_route_header *lrh;
+	struct ib_global_route_header *grh;
+	struct ib_base_transport_header *bth;
+	struct ib_datagram_extended_transport_header *deth;
+	size_t orig_iob_len = iob_len ( iobuf );
+	unsigned int lnh;
+	size_t pad_len;
+
+	/* Clear return values */
+	if ( qp )
+		*qp = NULL;
+	if ( payload_len )
+		*payload_len = 0;
+	memset ( dest, 0, sizeof ( *dest ) );
+	memset ( source, 0, sizeof ( *source ) );
+
+	/* Extract LRH */
+	if ( iob_len ( iobuf ) < sizeof ( *lrh ) ) {
+		DBGC ( ibdev, "IBDEV %p RX too short (%zd bytes) for LRH\n",
+		       ibdev, iob_len ( iobuf ) );
+		return -EINVAL;
+	}
+	lrh = iobuf->data;
+	iob_pull ( iobuf, sizeof ( *lrh ) );
+	dest->lid = ntohs ( lrh->dlid );
+	dest->sl = ( lrh->sl__lnh >> 4 );
+	source->lid = ntohs ( lrh->slid );
+	source->sl = ( lrh->sl__lnh >> 4 );
+	lnh = ( lrh->sl__lnh & 0x3 );
+
+	/* Reject unsupported packets */
+	if ( ! ( ( lnh == IB_LNH_BTH ) || ( lnh == IB_LNH_GRH ) ) ) {
+		DBGC ( ibdev, "IBDEV %p RX unsupported LNH %x\n",
+		       ibdev, lnh );
+		return -ENOTSUP;
+	}
+
+	/* Extract GRH, if present */
+	if ( lnh == IB_LNH_GRH ) {
+		if ( iob_len ( iobuf ) < sizeof ( *grh ) ) {
+			DBGC ( ibdev, "IBDEV %p RX too short (%zd bytes) "
+			       "for GRH\n", ibdev, iob_len ( iobuf ) );
+			return -EINVAL;
+		}
+		grh = iobuf->data;
+		iob_pull ( iobuf, sizeof ( *grh ) );
+		dest->gid_present = 1;
+		memcpy ( &dest->gid, &grh->dgid, sizeof ( dest->gid ) );
+		source->gid_present = 1;
+		memcpy ( &source->gid, &grh->sgid, sizeof ( source->gid ) );
+	} else {
+		grh = NULL;
+	}
+
+	/* Extract BTH */
+	if ( iob_len ( iobuf ) < sizeof ( *bth ) ) {
+		DBGC ( ibdev, "IBDEV %p RX too short (%zd bytes) for BTH\n",
+		       ibdev, iob_len ( iobuf ) );
+		return -EINVAL;
+	}
+	bth = iobuf->data;
+	iob_pull ( iobuf, sizeof ( *bth ) );
+	if ( bth->opcode != BTH_OPCODE_UD_SEND ) {
+		DBGC ( ibdev, "IBDEV %p unsupported BTH opcode %x\n",
+		       ibdev, bth->opcode );
+		return -ENOTSUP;
+	}
+	dest->qpn = ntohl ( bth->dest_qp );
+
+	/* Extract DETH */
+	if ( iob_len ( iobuf ) < sizeof ( *deth ) ) {
+		DBGC ( ibdev, "IBDEV %p RX too short (%zd bytes) for DETH\n",
+		       ibdev, iob_len ( iobuf ) );
+		return -EINVAL;
+	}
+	deth = iobuf->data;
+	iob_pull ( iobuf, sizeof ( *deth ) );
+	source->qpn = ntohl ( deth->src_qp );
+	source->qkey = ntohl ( deth->qkey );
+
+	/* Calculate payload length, if applicable */
+	if ( payload_len ) {
+		pad_len = ( ( bth->se__m__padcnt__tver >> 4 ) & 0x3 );
+		*payload_len = ( ( ntohs ( lrh->length ) << 2 )
+				 - ( orig_iob_len - iob_len ( iobuf ) )
+				 - pad_len - 4 /* ICRC */ );
+	}
+
+	/* Determine destination QP, if applicable */
+	if ( qp ) {
+		if ( IB_LID_MULTICAST ( dest->lid ) && grh ) {
+			if ( ! ( *qp = ib_find_qp_mgid ( ibdev, &grh->dgid ))){
+				DBGC ( ibdev, "IBDEV %p RX for unknown MGID "
+				       IB_GID_FMT "\n",
+				       ibdev, IB_GID_ARGS ( &grh->dgid ) );
+				return -ENODEV;
+			}
+		} else {
+			if ( ! ( *qp = ib_find_qp_qpn ( ibdev, dest->qpn ) ) ) {
+				DBGC ( ibdev, "IBDEV %p RX for nonexistent "
+				       "QPN %lx\n", ibdev, dest->qpn );
+				return -ENODEV;
+			}
+		}
+		assert ( *qp );
+	}
+
+	DBGC2 ( ibdev, "IBDEV %p RX %04x:%08lx <= %04x:%08lx (key %08x)\n",
+		ibdev, dest->lid, ( IB_LID_MULTICAST ( dest->lid ) ?
+			      ( qp ? (*qp)->ext_qpn : -1UL ) : dest->qpn ),
+		source->lid, source->qpn, ntohl ( deth->qkey ) );
+	DBGCP_HDA ( ibdev, 0,
+		    ( iobuf->data - ( orig_iob_len - iob_len ( iobuf ) ) ),
+		    ( orig_iob_len - iob_len ( iobuf ) ) );
+
+	return 0;
+}