ia64/linux-2.6.18-xen.hg

view arch/cris/arch-v10/lib/dmacopy.c @ 673:3161879fdf22

[IA64] xencomm: support XENMEM_add_to_physmap and XENMEM_remove_from_phsymap

support XENMEM_add_to_physmap and XENMEM_remove_from_phsymap.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Tue Sep 16 21:26:15 2008 +0900 (2008-09-16)
parents 831230e53067
children
line source
1 /* $Id: dmacopy.c,v 1.1 2001/12/17 13:59:27 bjornw Exp $
2 *
3 * memcpy for large blocks, using memory-memory DMA channels 6 and 7 in Etrax
4 */
6 #include <asm/svinto.h>
7 #include <asm/io.h>
9 #define D(x)
11 void *dma_memcpy(void *pdst,
12 const void *psrc,
13 unsigned int pn)
14 {
15 static etrax_dma_descr indma, outdma;
17 D(printk("dma_memcpy %d bytes... ", pn));
19 #if 0
20 *R_GEN_CONFIG = genconfig_shadow =
21 (genconfig_shadow & ~0x3c0000) |
22 IO_STATE(R_GEN_CONFIG, dma6, intdma7) |
23 IO_STATE(R_GEN_CONFIG, dma7, intdma6);
24 #endif
25 indma.sw_len = outdma.sw_len = pn;
26 indma.ctrl = d_eol | d_eop;
27 outdma.ctrl = d_eol;
28 indma.buf = psrc;
29 outdma.buf = pdst;
31 *R_DMA_CH6_FIRST = &indma;
32 *R_DMA_CH7_FIRST = &outdma;
33 *R_DMA_CH6_CMD = IO_STATE(R_DMA_CH6_CMD, cmd, start);
34 *R_DMA_CH7_CMD = IO_STATE(R_DMA_CH7_CMD, cmd, start);
36 while(*R_DMA_CH7_CMD == 1) /* wait for completion */ ;
38 D(printk("done\n"));
40 }