| From Aaditya.Kumar@ap.sony.com Fri Nov 23 03:46:32 2012 |
| From: Aaditya Kumar <aaditya.kumar@ap.sony.com> |
| Date: Fri, 23 Nov 2012 17:10:49 +0530 |
| Subject: [PATCH v2 RESEND 10/15] AXFS: axfs_uml.c |
| To: Greg KH <gregkh@linuxfoundation.org> |
| Cc: "ltsi-dev@lists.linuxfoundation.org" <ltsi-dev@lists.linuxfoundation.org>, tim.bird@am.sony.com, frank.rowand@am.sony.com, takuzo.ohara@ap.sony.com, amit.agarwal@ap.sony.com, kan.iibuchi@jp.sony.com, aaditya.kumar.30@gmail.com |
| Message-ID: <50AF60C1.5050301@ap.sony.com> |
| |
| |
| From: Jared Hulbert <jaredeh@gmail.com> |
| |
| Allows axfs in a UML kernel to use find_iomem() interface for the XIP device |
| or dummy functions if this is not a UML build. |
| |
| Signed-off-by: Jared Hulbert <jaredeh@gmail.com> |
| Signed-off-by: Aaditya Kumar <aaditya.kumar@ap.sony.com> |
| --- |
| fs/axfs/axfs_uml.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ |
| 1 file changed, 47 insertions(+) |
| create mode 100644 fs/axfs/axfs_uml.c |
| |
| --- /dev/null |
| +++ b/fs/axfs/axfs_uml.c |
| @@ -0,0 +1,47 @@ |
| +/* |
| + * Advanced XIP File System for Linux - AXFS |
| + * Readonly, compressed, and XIP filesystem for Linux systems big and small |
| + * |
| + * Copyright(c) 2008 Numonyx |
| + * |
| + * This program is free software; you can redistribute it and/or modify it |
| + * under the terms and conditions of the GNU General Public License, |
| + * version 2, as published by the Free Software Foundation. |
| + * |
| + * Authors: |
| + * Jared Hulbert <jaredeh@gmail.com> |
| + * |
| + * Project url: http://axfs.sourceforge.net |
| + * |
| + * axfs_uml.c - |
| + * Allows axfs to a UML kernels find_iomem() interface as an XIP device or |
| + * dummy functions if this is not a UML build. |
| + */ |
| +#include "axfs.h" |
| + |
| +#ifdef CONFIG_UML |
| +#include <mem_user.h> |
| +int axfs_get_uml_address(char *iomem, unsigned long *address, |
| + unsigned long *length) |
| +{ |
| + *address = find_iomem(iomem, length); |
| + if (!(*address)) { |
| + printk(KERN_DEBUG "axfs: find_iomem() failed\n"); |
| + return -EINVAL; |
| + } |
| + |
| + if (*length < PAGE_SIZE) { |
| + printk(KERN_DEBUG |
| + "axfs: iomem() too small, must be at least %li Bytes\n", |
| + PAGE_SIZE); |
| + return -EINVAL; |
| + } |
| + return 0; |
| +} |
| +#else |
| +int axfs_get_uml_address(char *iomem, unsigned long *address, |
| + unsigned long *length) |
| +{ |
| + return 0; |
| +} |
| +#endif /* CONFIG_UML */ |