| /* | |
| * 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")); | |
| } | |