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| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 21:00:55 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-09 02:30:23 +0200 |
| commit | 6df9183a153291a2585a8dfe67597fc18c201147 (patch) | |
| tree | 5e5f3b3da9308e20f2dda71c85242460bb7cacfa /drivers/dma/ioat/dma.h | |
| parent | ioat1: kill unused unmap parameters (diff) | |
| download | linux-6df9183a153291a2585a8dfe67597fc18c201147.tar.xz linux-6df9183a153291a2585a8dfe67597fc18c201147.zip | |
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.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h index fa15e77652a0..9f9edc2cd079 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 |