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soc: fsl: dpio: Add BP and FQ query APIs

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Add FQ (Frame Queue) and BP (Buffer Pool) query APIs that
users of QBMan can invoke to see the status of the queues
and pools that they are using.

Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roy Pledge
2018-12-18 15:23:01 +00:00
committed by David S. Miller
parent 7b98f63ea7
commit e80081c34b
4 changed files with 226 additions and 0 deletions
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68
drivers/soc/fsl/dpio/dpio-service.c
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@@ -601,3 +601,71 @@ struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last)
return ret;
}
EXPORT_SYMBOL_GPL(dpaa2_io_store_next);
/**
* dpaa2_io_query_fq_count() - Get the frame and byte count for a given fq.
* @d: the given DPIO object.
* @fqid: the id of frame queue to be queried.
* @fcnt: the queried frame count.
* @bcnt: the queried byte count.
*
* Knowing the FQ count at run-time can be useful in debugging situations.
* The instantaneous frame- and byte-count are hereby returned.
*
* Return 0 for a successful query, and negative error code if query fails.
*/
int dpaa2_io_query_fq_count(struct dpaa2_io *d, u32 fqid,
u32 *fcnt, u32 *bcnt)
{
struct qbman_fq_query_np_rslt state;
struct qbman_swp *swp;
unsigned long irqflags;
int ret;
d = service_select(d);
if (!d)
return -ENODEV;
swp = d->swp;
spin_lock_irqsave(&d->lock_mgmt_cmd, irqflags);
ret = qbman_fq_query_state(swp, fqid, &state);
spin_unlock_irqrestore(&d->lock_mgmt_cmd, irqflags);
if (ret)
return ret;
*fcnt = qbman_fq_state_frame_count(&state);
*bcnt = qbman_fq_state_byte_count(&state);
return 0;
}
EXPORT_SYMBOL_GPL(dpaa2_io_query_fq_count);
/**
* dpaa2_io_query_bp_count() - Query the number of buffers currently in a
* buffer pool.
* @d: the given DPIO object.
* @bpid: the index of buffer pool to be queried.
* @num: the queried number of buffers in the buffer pool.
*
* Return 0 for a successful query, and negative error code if query fails.
*/
int dpaa2_io_query_bp_count(struct dpaa2_io *d, u16 bpid, u32 *num)
{
struct qbman_bp_query_rslt state;
struct qbman_swp *swp;
unsigned long irqflags;
int ret;
d = service_select(d);
if (!d)
return -ENODEV;
swp = d->swp;
spin_lock_irqsave(&d->lock_mgmt_cmd, irqflags);
ret = qbman_bp_query(swp, bpid, &state);
spin_unlock_irqrestore(&d->lock_mgmt_cmd, irqflags);
if (ret)
return ret;
*num = qbman_bp_info_num_free_bufs(&state);
return 0;
}
EXPORT_SYMBOL_GPL(dpaa2_io_query_bp_count);