/************ DEBUG ***********/
MV_VOID mvIdmaRegs(MV_U32 chan)
{
mvOsPrintf("\t IDMA #%d Registers:\n", chan);
mvOsPrintf("IDMA_BYTE_COUNT_REG : 0x%X = 0x%08x\n",
IDMA_BYTE_COUNT_REG(chan), MV_REG_READ(IDMA_BYTE_COUNT_REG(chan)));
mvOsPrintf("IDMA_SRC_ADDR_REG : 0x%X = 0x%08x\n",
IDMA_SRC_ADDR_REG(chan), MV_REG_READ(IDMA_SRC_ADDR_REG(chan)));
mvOsPrintf("IDMA_DST_ADDR_REG : 0x%X = 0x%08x\n",
IDMA_DST_ADDR_REG(chan), MV_REG_READ(IDMA_DST_ADDR_REG(chan)));
mvOsPrintf("IDMA_NEXT_DESC_PTR_REG : 0x%X = 0x%08x\n",
IDMA_NEXT_DESC_PTR_REG(chan), MV_REG_READ(IDMA_NEXT_DESC_PTR_REG(chan)));
mvOsPrintf("IDMA_CURR_DESC_PTR_REG : 0x%X = 0x%08x\n",
IDMA_CURR_DESC_PTR_REG(chan), MV_REG_READ(IDMA_CURR_DESC_PTR_REG(chan)));
mvOsPrintf("IDMA_CTRL_LOW_REG : 0x%X = 0x%08x\n",
IDMA_CTRL_LOW_REG(chan), MV_REG_READ(IDMA_CTRL_LOW_REG(chan)));
mvOsPrintf("IDMA_CTRL_HIGH_REG : 0x%X = 0x%08x\n",
IDMA_CTRL_HIGH_REG(chan), MV_REG_READ(IDMA_CTRL_HIGH_REG(chan)));
mvOsPrintf("IDMA_CAUSE_REG : 0x%X = 0x%08x\n", IDMA_CAUSE_REG, MV_REG_READ(IDMA_CAUSE_REG));
mvOsPrintf("IDMA_MASK_REG : 0x%X = 0x%08x\n", IDMA_MASK_REG, MV_REG_READ(IDMA_MASK_REG));
}
int mv_dma_init(void)
{
#if defined(CONFIG_MV78200) || defined(CONFIG_MV632X)
if (MV_FALSE == mvSocUnitIsMappedToThisCpu(IDMA))
{
printk(KERN_INFO"IDMA is not mapped to this CPU\n");
return -ENODEV;
}
#endif
printk(KERN_INFO "Use IDMA channels %d and %d for enhancing the following function:\n",
CPY_CHAN1, CPY_CHAN2);
#ifdef CONFIG_MV_IDMA_COPYUSER
printk(KERN_INFO " o Copy From/To user space operations.\n");
#endif
#ifdef CONFIG_MV_IDMA_MEMCOPY
printk(KERN_INFO " o memcpy() and memmove() operations.\n");
#endif
#ifdef CONFIG_MV_IDMA_MEMZERO
printk(KERN_INFO " o memzero() operations.\n");
#endif
#ifdef CONFIG_MV_IDMA_MEMZERO
DPRINTK(KERN_ERR "ZERO buffer address 0x%08x\n", (u32)dmaMemInitBuff);
asm_memzero(dmaMemInitBuff, sizeof(dmaMemInitBuff));
dmac_flush_range(dmaMemInitBuff, dmaMemInitBuff + sizeof(dmaMemInitBuff));
#endif
MV_REG_WRITE(IDMA_BYTE_COUNT_REG(CPY_CHAN1), 0);
MV_REG_WRITE(IDMA_CURR_DESC_PTR_REG(CPY_CHAN1), 0);
MV_REG_WRITE(IDMA_CTRL_HIGH_REG(CPY_CHAN1), ICCHR_ENDIAN_LITTLE
#ifdef MV_CPU_LE
| ICCHR_DESC_BYTE_SWAP_EN
#endif
);
MV_REG_WRITE(IDMA_CTRL_LOW_REG(CPY_CHAN1), CPY_IDMA_CTRL_LOW_VALUE);
MV_REG_WRITE(IDMA_BYTE_COUNT_REG(CPY_CHAN2), 0);
MV_REG_WRITE(IDMA_CURR_DESC_PTR_REG(CPY_CHAN2), 0);
MV_REG_WRITE(IDMA_CTRL_HIGH_REG(CPY_CHAN2), ICCHR_ENDIAN_LITTLE
#ifdef MV_CPU_LE
| ICCHR_DESC_BYTE_SWAP_EN
#endif
);
MV_REG_WRITE(IDMA_CTRL_LOW_REG(CPY_CHAN2), CPY_IDMA_CTRL_LOW_VALUE);
current_dma_channel = CPY_CHAN1;
dma_proc_entry = create_proc_entry("dma_copy", S_IFREG | S_IRUGO, 0);
dma_proc_entry->read_proc = dma_read_proc;
// dma_proc_entry->write_proc = dma_write_proc;
dma_proc_entry->nlink = 1;
idma_init = 1;
return 0;
}
