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author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-21 08:52:18 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-21 08:52:18 -0800 |
commit | b05005772f34497eb2b7415a651fe785cbe70e16 (patch) | |
tree | b176aeb7fa9baf69e77ddd83e844727490bfcf28 /lib/iomap_copy.c | |
parent | 044f324f6ea5d55391db62fca6a295b2651cb946 (diff) | |
parent | 7705a8792b0fc82fd7d4dd923724606bbfd9fb20 (diff) | |
download | kernel-crypto-b05005772f34497eb2b7415a651fe785cbe70e16.tar.gz kernel-crypto-b05005772f34497eb2b7415a651fe785cbe70e16.tar.xz kernel-crypto-b05005772f34497eb2b7415a651fe785cbe70e16.zip |
Merge branch 'origin'
Conflicts:
Documentation/video4linux/CARDLIST.cx88
drivers/media/video/cx88/Kconfig
drivers/media/video/em28xx/em28xx-video.c
drivers/media/video/saa7134/saa7134-dvb.c
Resolved as in the original merge by Mauro Carvalho Chehab
Diffstat (limited to 'lib/iomap_copy.c')
-rw-r--r-- | lib/iomap_copy.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/lib/iomap_copy.c b/lib/iomap_copy.c new file mode 100644 index 00000000000..351045f4f63 --- /dev/null +++ b/lib/iomap_copy.c @@ -0,0 +1,42 @@ +/* + * Copyright 2006 PathScale, Inc. All Rights Reserved. + * + * This file is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License + * as published by the Free Software Foundation. + * + * 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 St, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <linux/module.h> +#include <linux/io.h> + +/** + * __iowrite32_copy - copy data to MMIO space, in 32-bit units + * @to: destination, in MMIO space (must be 32-bit aligned) + * @from: source (must be 32-bit aligned) + * @count: number of 32-bit quantities to copy + * + * Copy data from kernel space to MMIO space, in units of 32 bits at a + * time. Order of access is not guaranteed, nor is a memory barrier + * performed afterwards. + */ +void __attribute__((weak)) __iowrite32_copy(void __iomem *to, + const void *from, + size_t count) +{ + u32 __iomem *dst = to; + const u32 *src = from; + const u32 *end = src + count; + + while (src < end) + __raw_writel(*src++, dst++); +} +EXPORT_SYMBOL_GPL(__iowrite32_copy); |