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dma/ioat: add vchan status

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Add support for the rte_dmadev_vchan_status API call.

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>
This commit is contained in:
Conor Walsh 2021-10-18 12:38:32 +00:00 committed by Thomas Monjalon
parent f526394174
commit 912c204424
1 changed files with 21 additions and 0 deletions
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21
drivers/dma/ioat/ioat_dmadev.c
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@ -542,6 +542,26 @@ ioat_stats_reset(struct rte_dma_dev *dev, uint16_t vchan __rte_unused)
return 0;
}
/* Check if the IOAT device is idle. */
static int
ioat_vchan_status(const struct rte_dma_dev *dev, uint16_t vchan __rte_unused,
enum rte_dma_vchan_status *status)
{
int state = 0;
const struct ioat_dmadev *ioat = dev->fp_obj->dev_private;
const uint16_t mask = ioat->qcfg.nb_desc - 1;
const uint16_t last = __get_last_completed(ioat, &state);
if (state == IOAT_CHANSTS_HALTED || state == IOAT_CHANSTS_SUSPENDED)
*status = RTE_DMA_VCHAN_HALTED_ERROR;
else if (last == ((ioat->next_write - 1) & mask))
*status = RTE_DMA_VCHAN_IDLE;
else
*status = RTE_DMA_VCHAN_ACTIVE;
return 0;
}
/* Create a DMA device. */
static int
ioat_dmadev_create(const char *name, struct rte_pci_device *dev)
@ -555,6 +575,7 @@ ioat_dmadev_create(const char *name, struct rte_pci_device *dev)
.dev_stop = ioat_dev_stop,
.stats_get = ioat_stats_get,
.stats_reset = ioat_stats_reset,
.vchan_status = ioat_vchan_status,
.vchan_setup = ioat_vchan_setup,
};