Add statistic tracking for operations in IOAT.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
drivers/dma/ioat/ioat_dmadev.c | 43 ++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
@@ -77,6 +77,9 @@ ioat_vchan_setup(struct rte_dma_dev *dev, uint16_t vchan __rte_unused,
ioat->offset = 0;
ioat->failure = 0;
+ /* Reset Stats. */
+ ioat->stats = (struct rte_dma_stats){0};
+
/* Configure descriptor ring - each one points to next. */
for (i = 0; i < ioat->qcfg.nb_desc; i++) {
ioat->desc_ring[i].next = ioat->ring_addr +
@@ -222,6 +225,8 @@ __submit(struct ioat_dmadev *ioat)
{
*ioat->doorbell = ioat->next_write - ioat->offset;
+ ioat->stats.submitted += (uint16_t)(ioat->next_write - ioat->last_write);
+
ioat->last_write = ioat->next_write;
}
@@ -352,6 +357,10 @@ __dev_dump(void *dev_private, FILE *f)
fprintf(f, " Dest: 0x%"PRIx64"\n", ioat->desc_ring[ioat->next_read & mask].dest_addr);
fprintf(f, " Next: 0x%"PRIx64"\n", ioat->desc_ring[ioat->next_read & mask].next);
fprintf(f, " }\n");
+ fprintf(f, " Key Stats { submitted: %"PRIu64", comp: %"PRIu64", failed: %"PRIu64" }\n",
+ ioat->stats.submitted,
+ ioat->stats.completed,
+ ioat->stats.errors);
return 0;
}
@@ -448,6 +457,9 @@ ioat_completed(void *dev_private, uint16_t qid __rte_unused, const uint16_t max_
*last_idx = ioat->next_read - 2;
}
+ ioat->stats.completed += count;
+ ioat->stats.errors += fails;
+
return count;
}
@@ -498,9 +510,38 @@ ioat_completed_status(void *dev_private, uint16_t qid __rte_unused,
*last_idx = ioat->next_read - 1;
+ ioat->stats.completed += count;
+ ioat->stats.errors += fails;
+
return count;
}
+/* Retrieve the generic stats of a DMA device. */
+static int
+ioat_stats_get(const struct rte_dma_dev *dev, uint16_t vchan __rte_unused,
+ struct rte_dma_stats *rte_stats, uint32_t size)
+{
+ struct rte_dma_stats *stats = (&((struct ioat_dmadev *)dev->dev_private)->stats);
+
+ if (size < sizeof(rte_stats))
+ return -EINVAL;
+ if (rte_stats == NULL)
+ return -EINVAL;
+
+ *rte_stats = *stats;
+ return 0;
+}
+
+/* Reset the generic stat counters for the DMA device. */
+static int
+ioat_stats_reset(struct rte_dma_dev *dev, uint16_t vchan __rte_unused)
+{
+ struct ioat_dmadev *ioat = dev->dev_private;
+
+ ioat->stats = (struct rte_dma_stats){0};
+ return 0;
+}
+
/* Create a DMA device. */
static int
ioat_dmadev_create(const char *name, struct rte_pci_device *dev)
@@ -512,6 +553,8 @@ ioat_dmadev_create(const char *name, struct rte_pci_device *dev)
.dev_info_get = ioat_dev_info_get,
.dev_start = ioat_dev_start,
.dev_stop = ioat_dev_stop,
+ .stats_get = ioat_stats_get,
+ .stats_reset = ioat_stats_reset,
.vchan_setup = ioat_vchan_setup,
};