2 * memcpy for large blocks, using memory-memory DMA channels 6 and 7 in Etrax
5 #include <asm/svinto.h>
10 void *dma_memcpy(void *pdst,
14 static etrax_dma_descr indma, outdma;
16 D(printk(KERN_DEBUG "dma_memcpy %d bytes... ", pn));
19 *R_GEN_CONFIG = genconfig_shadow =
20 (genconfig_shadow & ~0x3c0000) |
21 IO_STATE(R_GEN_CONFIG, dma6, intdma7) |
22 IO_STATE(R_GEN_CONFIG, dma7, intdma6);
24 indma.sw_len = outdma.sw_len = pn;
25 indma.ctrl = d_eol | d_eop;
30 *R_DMA_CH6_FIRST = &indma;
31 *R_DMA_CH7_FIRST = &outdma;
32 *R_DMA_CH6_CMD = IO_STATE(R_DMA_CH6_CMD, cmd, start);
33 *R_DMA_CH7_CMD = IO_STATE(R_DMA_CH7_CMD, cmd, start);
35 while (*R_DMA_CH7_CMD == 1)
36 /* wait for completion */;
38 D(printk(KERN_DEBUG "done\n"));