diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/cris/arch-v10/lib/dmacopy.c | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/cris/arch-v10/lib/dmacopy.c')
| -rw-r--r-- | kernel/arch/cris/arch-v10/lib/dmacopy.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/kernel/arch/cris/arch-v10/lib/dmacopy.c b/kernel/arch/cris/arch-v10/lib/dmacopy.c new file mode 100644 index 000000000..49f5b8ca5 --- /dev/null +++ b/kernel/arch/cris/arch-v10/lib/dmacopy.c @@ -0,0 +1,42 @@ +/* + * memcpy for large blocks, using memory-memory DMA channels 6 and 7 in Etrax + */ + +#include <asm/svinto.h> +#include <asm/io.h> + +#define D(x) + +void *dma_memcpy(void *pdst, + const void *psrc, + unsigned int pn) +{ + static etrax_dma_descr indma, outdma; + + D(printk(KERN_DEBUG "dma_memcpy %d bytes... ", pn)); + +#if 0 + *R_GEN_CONFIG = genconfig_shadow = + (genconfig_shadow & ~0x3c0000) | + IO_STATE(R_GEN_CONFIG, dma6, intdma7) | + IO_STATE(R_GEN_CONFIG, dma7, intdma6); +#endif + indma.sw_len = outdma.sw_len = pn; + indma.ctrl = d_eol | d_eop; + outdma.ctrl = d_eol; + indma.buf = psrc; + outdma.buf = pdst; + + *R_DMA_CH6_FIRST = &indma; + *R_DMA_CH7_FIRST = &outdma; + *R_DMA_CH6_CMD = IO_STATE(R_DMA_CH6_CMD, cmd, start); + *R_DMA_CH7_CMD = IO_STATE(R_DMA_CH7_CMD, cmd, start); + + while (*R_DMA_CH7_CMD == 1) + /* wait for completion */; + + D(printk(KERN_DEBUG "done\n")); +} + + + |