From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QTTCb-00043M-HG for barebox@lists.infradead.org; Mon, 06 Jun 2011 06:22:19 +0000 Date: Mon, 6 Jun 2011 08:22:14 +0200 From: Sascha Hauer Message-ID: <20110606062214.GT23771@pengutronix.de> References: <1307029887-7091-1-git-send-email-plagnioj@jcrosoft.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1307029887-7091-1-git-send-email-plagnioj@jcrosoft.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH] import linux __iowrite32/64_copy support To: Jean-Christophe PLAGNIOL-VILLARD Cc: barebox@lists.infradead.org Hi J, On Thu, Jun 02, 2011 at 05:51:27PM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote: > Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD > --- > include/linux/io.h | 27 ++++++++++++++++++++ > lib/Makefile | 1 + > lib/iomap_copy.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++ No general obejctions, but without users this is quite uninteresting. Please repost this along with the first user. Sascha > 3 files changed, 98 insertions(+), 0 deletions(-) > create mode 100644 include/linux/io.h > create mode 100644 lib/iomap_copy.c > > diff --git a/include/linux/io.h b/include/linux/io.h > new file mode 100644 > index 0000000..a87501c > --- /dev/null > +++ b/include/linux/io.h > @@ -0,0 +1,27 @@ > +/* > + * 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. > + */ > + > +#ifndef _LINUX_IO_H > +#define _LINUX_IO_H > + > +#include > +#include > + > +void __iowrite32_copy(void __iomem *to, const void *from, size_t count); > +void __iowrite64_copy(void __iomem *to, const void *from, size_t count); > + > +#endif /* _LINUX_IO_H */ > diff --git a/lib/Makefile b/lib/Makefile > index d96cfe7..b1f4f3d 100644 > --- a/lib/Makefile > +++ b/lib/Makefile > @@ -1,4 +1,5 @@ > obj-y += ctype.o > +obj-y += iomap_copy.o > obj-y += rbtree.o > obj-y += display_options.o > obj-y += string.o > diff --git a/lib/iomap_copy.c b/lib/iomap_copy.c > new file mode 100644 > index 0000000..8732ae0 > --- /dev/null > +++ b/lib/iomap_copy.c > @@ -0,0 +1,70 @@ > +/* > + * 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 > +#include > + > +/** > + * __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); > + > +/** > + * __iowrite64_copy - copy data to MMIO space, in 64-bit or 32-bit units > + * @to: destination, in MMIO space (must be 64-bit aligned) > + * @from: source (must be 64-bit aligned) > + * @count: number of 64-bit quantities to copy > + * > + * Copy data from kernel space to MMIO space, in units of 32 or 64 bits at a > + * time. Order of access is not guaranteed, nor is a memory barrier > + * performed afterwards. > + */ > +void __attribute__((weak)) __iowrite64_copy(void __iomem *to, > + const void *from, > + size_t count) > +{ > +#ifdef CONFIG_64BIT > + u64 __iomem *dst = to; > + const u64 *src = from; > + const u64 *end = src + count; > + > + while (src < end) > + __raw_writeq(*src++, dst++); > +#else > + __iowrite32_copy(to, from, count * 2); > +#endif > +} > + > +EXPORT_SYMBOL_GPL(__iowrite64_copy); > -- > 1.7.4.1 > > > _______________________________________________ > barebox mailing list > barebox@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox > -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox