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authorDan Williams <dan.j.williams@intel.com>2009-09-08 12:00:55 -0700
committerDan Williams <dan.j.williams@intel.com>2009-09-08 17:30:23 -0700
commit6df9183a153291a2585a8dfe67597fc18c201147 (patch)
tree5e5f3b3da9308e20f2dda71c85242460bb7cacfa /drivers/dma/ioat/dma.h
parent38e12f64a165e83617c21dae3c15972fd8d639f5 (diff)
downloadop-kernel-dev-6df9183a153291a2585a8dfe67597fc18c201147.zip
op-kernel-dev-6df9183a153291a2585a8dfe67597fc18c201147.tar.gz
ioat: add some dev_dbg() calls
Provide some output for debugging the driver. Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ioat/dma.h')
-rw-r--r--drivers/dma/ioat/dma.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index fa15e77..9f9edc2c 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -173,6 +173,7 @@ ioat_is_complete(struct dma_chan *c, dma_cookie_t cookie,
* or attached to a transaction list (async_tx.tx_list)
* @tx_cnt: number of descriptors required to complete the transaction
* @txd: the generic software descriptor for all engines
+ * @id: identifier for debug
*/
struct ioat_desc_sw {
struct ioat_dma_descriptor *hw;
@@ -180,8 +181,35 @@ struct ioat_desc_sw {
int tx_cnt;
size_t len;
struct dma_async_tx_descriptor txd;
+ #ifdef DEBUG
+ int id;
+ #endif
};
+#ifdef DEBUG
+#define set_desc_id(desc, i) ((desc)->id = (i))
+#define desc_id(desc) ((desc)->id)
+#else
+#define set_desc_id(desc, i)
+#define desc_id(desc) (0)
+#endif
+
+static inline void
+__dump_desc_dbg(struct ioat_chan_common *chan, struct ioat_dma_descriptor *hw,
+ struct dma_async_tx_descriptor *tx, int id)
+{
+ struct device *dev = to_dev(chan);
+
+ dev_dbg(dev, "desc[%d]: (%#llx->%#llx) cookie: %d flags: %#x"
+ " ctl: %#x (op: %d int_en: %d compl: %d)\n", id,
+ (unsigned long long) tx->phys,
+ (unsigned long long) hw->next, tx->cookie, tx->flags,
+ hw->ctl, hw->ctl_f.op, hw->ctl_f.int_en, hw->ctl_f.compl_write);
+}
+
+#define dump_desc_dbg(c, d) \
+ ({ if (d) __dump_desc_dbg(&c->base, d->hw, &d->txd, desc_id(d)); 0; })
+
static inline void ioat_set_tcp_copy_break(unsigned long copybreak)
{
#ifdef CONFIG_NET_DMA
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