diff options
| author | Huang Shijie <b32955@freescale.com> | 2010-11-22 10:17:12 +0800 |
|---|---|---|
| committer | Huang Shijie <b32955@freescale.com> | 2010-11-22 11:12:45 +0800 |
| commit | 28edeaa115585f7add59bed278dcc2ec81902fc6 (patch) | |
| tree | 947fdbe8221fd4d894c817942b60bf6777d44cd3 | |
| parent | 25f70f8ec88ade9452c89bd12df782507fe8898a (diff) | |
ENGR00133906-1 DMA : add dumping code for DMA
Dump the DMA registers for the function mxs_dma_get_info().
Signed-off-by: Huang Shijie <b32955@freescale.com>
| -rw-r--r-- | arch/arm/mach-mx5/dmaengine.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/arch/arm/mach-mx5/dmaengine.c b/arch/arm/mach-mx5/dmaengine.c index ff3bb3553068..e92d9b9202e8 100644 --- a/arch/arm/mach-mx5/dmaengine.c +++ b/arch/arm/mach-mx5/dmaengine.c @@ -165,6 +165,10 @@ int mxs_dma_get_info(int channel, struct mxs_dma_info *info) { struct mxs_dma_chan *pchan; struct mxs_dma_device *pdma; +#ifdef DUMPING_DMA_ALL + struct list_head *pos; + int value, i, offset; +#endif if (!info) return -EINVAL; @@ -176,6 +180,48 @@ int mxs_dma_get_info(int channel, struct mxs_dma_info *info) pdma = pchan->dma; if (pdma->info) pdma->info(pdma, channel - pdma->chan_base, info); + +#ifdef DUMPING_DMA_ALL + printk(KERN_INFO "\n[ %s ] channel : %d ,active : %d, pending : %d\n", + __func__, channel, pchan->active_num, pchan->pending_num); + + for (i = 0; i < 6; i++) { + offset = i * 0x10 + channel * 0x70; + value = __raw_readl(pdma->base + offset); + printk(KERN_INFO "[ %s ] offset : 0x%.3x -- 0x%.8x\n", + __func__, offset, value); + } + for (i = 0; i < 7; i++) { + offset = 0x100 + i * 0x10 + channel * 0x70; + value = __raw_readl(pdma->base + offset); + printk(KERN_INFO "[ %s ] offset : 0x%.3x -- 0x%.8x\n", + __func__, offset, value); + } + + offset = 0; + list_for_each(pos, &pchan->active) { + struct mxs_dma_desc *pdesc; + + pdesc = list_entry(pos, struct mxs_dma_desc, node); + printk(KERN_INFO "========================================\n"); + printk(KERN_INFO "The whole chain of CMD %d is :\n" + "\tNEXT_COMMAND_ADDRESS : 0x%.8lx\n" + "\tCMD : 0x%.8lx\n" + "\tDMA Buffer : 0x%.8x\n" + "\taddress : 0x%.8x\n", + offset++, + pdesc->cmd.next, + pdesc->cmd.cmd.data, + (int)pdesc->cmd.address, + (int)pdesc->address); + + for (i = 0; i < pdesc->cmd.cmd.bits.pio_words; i++) { + printk(KERN_INFO "PIO WORD [ %d ] --> 0x%.8lx\n", + i, pdesc->cmd.pio_words[i]); + } + printk(KERN_INFO "==================================\n"); + } +#endif return 0; } EXPORT_SYMBOL(mxs_dma_get_info); @@ -431,7 +477,6 @@ int mxs_dma_desc_append(int channel, struct mxs_dma_desc *pdesc) if (pdesc->flags & MXS_DMA_DESC_FIRST) pchan->pending_num++; list_add_tail(&pdesc->node, &pchan->active); -out: spin_unlock_irqrestore(&pchan->lock, flags); return ret; } |