1 files changed, 0 insertions, 324 deletions

diff --git a/qemu/roms/ipxe/src/core/xferbuf.c b/qemu/roms/ipxe/src/core/xferbuf.c
deleted file mode 100644
index 240118557..000000000
--- a/qemu/roms/ipxe/src/core/xferbuf.c
+++ /dev/null
@@ -1,324 +0,0 @@
-/*
- * Copyright (C) 2012 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 (at your option) 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.
- *
- * You can also choose to distribute this program under the terms of
- * the Unmodified Binary Distribution Licence (as given in the file
- * COPYING.UBDL), provided that you have satisfied its requirements.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <ipxe/xfer.h>
-#include <ipxe/iobuf.h>
-#include <ipxe/umalloc.h>
-#include <ipxe/profile.h>
-#include <ipxe/xferbuf.h>
-
-/** @file
- *
- * Data transfer buffer
- *
- */
-
-/** Data delivery profiler */
-static struct profiler xferbuf_deliver_profiler __profiler =
-	{ .name = "xferbuf.deliver" };
-
-/** Data write profiler */
-static struct profiler xferbuf_write_profiler __profiler =
-	{ .name = "xferbuf.write" };
-
-/** Data read profiler */
-static struct profiler xferbuf_read_profiler __profiler =
-	{ .name = "xferbuf.read" };
-
-/**
- * Free data transfer buffer
- *
- * @v xferbuf		Data transfer buffer
- */
-void xferbuf_free ( struct xfer_buffer *xferbuf ) {
-
-	xferbuf->op->realloc ( xferbuf, 0 );
-	xferbuf->len = 0;
-	xferbuf->pos = 0;
-}
-
-/**
- * Ensure that data transfer buffer is large enough for the specified size
- *
- * @v xferbuf		Data transfer buffer
- * @v len		Required minimum size
- * @ret rc		Return status code
- */
-static int xferbuf_ensure_size ( struct xfer_buffer *xferbuf, size_t len ) {
-	int rc;
-
-	/* If buffer is already large enough, do nothing */
-	if ( len <= xferbuf->len )
-		return 0;
-
-	/* Extend buffer */
-	if ( ( rc = xferbuf->op->realloc ( xferbuf, len ) ) != 0 ) {
-		DBGC ( xferbuf, "XFERBUF %p could not extend buffer to "
-		       "%zd bytes: %s\n", xferbuf, len, strerror ( rc ) );
-		return rc;
-	}
-	xferbuf->len = len;
-
-	return 0;
-}
-
-/**
- * Write to data transfer buffer
- *
- * @v xferbuf		Data transfer buffer
- * @v offset		Starting offset
- * @v data		Data to write
- * @v len		Length of data
- */
-int xferbuf_write ( struct xfer_buffer *xferbuf, size_t offset,
-		    const void *data, size_t len ) {
-	size_t max_len;
-	int rc;
-
-	/* Check for overflow */
-	max_len = ( offset + len );
-	if ( max_len < offset )
-		return -EOVERFLOW;
-
-	/* Ensure buffer is large enough to contain this write */
-	if ( ( rc = xferbuf_ensure_size ( xferbuf, max_len ) ) != 0 )
-		return rc;
-
-	/* Copy data to buffer */
-	profile_start ( &xferbuf_write_profiler );
-	xferbuf->op->write ( xferbuf, offset, data, len );
-	profile_stop ( &xferbuf_write_profiler );
-
-	return 0;
-}
-
-/**
- * Read from data transfer buffer
- *
- * @v xferbuf		Data transfer buffer
- * @v offset		Starting offset
- * @v data		Data to write
- * @v len		Length of data
- */
-int xferbuf_read ( struct xfer_buffer *xferbuf, size_t offset,
-		   void *data, size_t len ) {
-
-	/* Check that read is within buffer range */
-	if ( ( offset > xferbuf->len ) ||
-	     ( len > ( xferbuf->len - offset ) ) )
-		return -ENOENT;
-
-	/* Copy data from buffer */
-	profile_start ( &xferbuf_read_profiler );
-	xferbuf->op->read ( xferbuf, offset, data, len );
-	profile_stop ( &xferbuf_read_profiler );
-
-	return 0;
-}
-
-/**
- * Add received data to data transfer buffer
- *
- * @v xferbuf		Data transfer buffer
- * @v iobuf		I/O buffer
- * @v meta		Data transfer metadata
- * @ret rc		Return status code
- */
-int xferbuf_deliver ( struct xfer_buffer *xferbuf, struct io_buffer *iobuf,
-		      struct xfer_metadata *meta ) {
-	size_t len = iob_len ( iobuf );
-	size_t pos;
-	int rc;
-
-	/* Start profiling */
-	profile_start ( &xferbuf_deliver_profiler );
-
-	/* Calculate new buffer position */
-	pos = xferbuf->pos;
-	if ( meta->flags & XFER_FL_ABS_OFFSET )
-		pos = 0;
-	pos += meta->offset;
-
-	/* Write data to buffer */
-	if ( ( rc = xferbuf_write ( xferbuf, pos, iobuf->data, len ) ) != 0 )
-		goto done;
-
-	/* Update current buffer position */
-	xferbuf->pos = ( pos + len );
-
- done:
-	free_iob ( iobuf );
-	profile_stop ( &xferbuf_deliver_profiler );
-	return rc;
-}
-
-/**
- * Reallocate malloc()-based data buffer
- *
- * @v xferbuf		Data transfer buffer
- * @v len		New length (or zero to free buffer)
- * @ret rc		Return status code
- */
-static int xferbuf_malloc_realloc ( struct xfer_buffer *xferbuf, size_t len ) {
-	void *new_data;
-
-	new_data = realloc ( xferbuf->data, len );
-	if ( ! new_data )
-		return -ENOSPC;
-	xferbuf->data = new_data;
-	return 0;
-}
-
-/**
- * Write data to malloc()-based data buffer
- *
- * @v xferbuf		Data transfer buffer
- * @v offset		Starting offset
- * @v data		Data to copy
- * @v len		Length of data
- */
-static void xferbuf_malloc_write ( struct xfer_buffer *xferbuf, size_t offset,
-				   const void *data, size_t len ) {
-
-	memcpy ( ( xferbuf->data + offset ), data, len );
-}
-
-/**
- * Read data from malloc()-based data buffer
- *
- * @v xferbuf		Data transfer buffer
- * @v offset		Starting offset
- * @v data		Data to read
- * @v len		Length of data
- */
-static void xferbuf_malloc_read ( struct xfer_buffer *xferbuf, size_t offset,
-				  void *data, size_t len ) {
-
-	memcpy ( data, ( xferbuf->data + offset ), len );
-}
-
-/** malloc()-based data buffer operations */
-struct xfer_buffer_operations xferbuf_malloc_operations = {
-	.realloc = xferbuf_malloc_realloc,
-	.write = xferbuf_malloc_write,
-	.read = xferbuf_malloc_read,
-};
-
-/**
- * Reallocate umalloc()-based data buffer
- *
- * @v xferbuf		Data transfer buffer
- * @v len		New length (or zero to free buffer)
- * @ret rc		Return status code
- */
-static int xferbuf_umalloc_realloc ( struct xfer_buffer *xferbuf, size_t len ) {
-	userptr_t *udata = xferbuf->data;
-	userptr_t new_udata;
-
-	new_udata = urealloc ( *udata, len );
-	if ( ! new_udata )
-		return -ENOSPC;
-	*udata = new_udata;
-	return 0;
-}
-
-/**
- * Write data to umalloc()-based data buffer
- *
- * @v xferbuf		Data transfer buffer
- * @v offset		Starting offset
- * @v data		Data to copy
- * @v len		Length of data
- */
-static void xferbuf_umalloc_write ( struct xfer_buffer *xferbuf, size_t offset,
-				    const void *data, size_t len ) {
-	userptr_t *udata = xferbuf->data;
-
-	copy_to_user ( *udata, offset, data, len );
-}
-
-/**
- * Read data from umalloc()-based data buffer
- *
- * @v xferbuf		Data transfer buffer
- * @v offset		Starting offset
- * @v data		Data to read
- * @v len		Length of data
- */
-static void xferbuf_umalloc_read ( struct xfer_buffer *xferbuf, size_t offset,
-				   void *data, size_t len ) {
-	userptr_t *udata = xferbuf->data;
-
-	copy_from_user ( data, *udata, offset, len );
-}
-
-/** umalloc()-based data buffer operations */
-struct xfer_buffer_operations xferbuf_umalloc_operations = {
-	.realloc = xferbuf_umalloc_realloc,
-	.write = xferbuf_umalloc_write,
-	.read = xferbuf_umalloc_read,
-};
-
-/**
- * Get underlying data transfer buffer
- *
- * @v interface		Data transfer interface
- * @ret xferbuf		Data transfer buffer, or NULL on error
- *
- * This call will check that the xfer_buffer() handler belongs to the
- * destination interface which also provides xfer_deliver() for this
- * interface.
- *
- * This is done to prevent accidental accesses to a data transfer
- * buffer which may be located behind a non-transparent datapath via a
- * series of pass-through interfaces.
- */
-struct xfer_buffer * xfer_buffer ( struct interface *intf ) {
-	struct interface *dest;
-	xfer_buffer_TYPE ( void * ) *op =
-		intf_get_dest_op ( intf, xfer_buffer, &dest );
-	void *object = intf_object ( dest );
-	struct interface *xfer_deliver_dest;
-	struct xfer_buffer *xferbuf;
-
-	/* Check that this operation is provided by the same interface
-	 * which handles xfer_deliver().
-	 */
-	( void ) intf_get_dest_op ( intf, xfer_deliver, &xfer_deliver_dest );
-
-	if ( op && ( dest == xfer_deliver_dest ) ) {
-		xferbuf = op ( object );
-	} else {
-		/* Default is to not have a data transfer buffer */
-		xferbuf = NULL;
-	}
-
-	intf_put ( xfer_deliver_dest );
-	intf_put ( dest );
-	return xferbuf;
-}