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215 lines
7.9 KiB
Diff
215 lines
7.9 KiB
Diff
From c91f8c8c94c5e8a25d0d46d6cb26c0c48ba04f8f Mon Sep 17 00:00:00 2001
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From: Roy Pledge <roy.pledge@nxp.com>
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Date: Wed, 4 Oct 2017 15:36:06 -0400
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Subject: [PATCH] soc: fsl: dpio: Add Support for Order Restoration
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Add DPIO support for HW assisted order restoration
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Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
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---
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drivers/soc/fsl/dpio/dpio-service.c | 105 ++++++++++++++++++++++++++++++++++++
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drivers/soc/fsl/dpio/qbman-portal.c | 37 +++++++++++++
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drivers/soc/fsl/dpio/qbman-portal.h | 3 ++
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include/soc/fsl/dpaa2-io.h | 14 ++++-
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4 files changed, 158 insertions(+), 1 deletion(-)
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--- a/drivers/soc/fsl/dpio/dpio-service.c
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+++ b/drivers/soc/fsl/dpio/dpio-service.c
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@@ -707,3 +707,108 @@ int dpaa2_io_query_bp_count(struct dpaa2
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return 0;
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}
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EXPORT_SYMBOL_GPL(dpaa2_io_query_bp_count);
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+
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+/**
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+ * dpaa2_io_service_enqueue_orp_fq() - Enqueue a frame to a frame queue with
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+ * order restoration
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+ * @d: the given DPIO service.
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+ * @fqid: the given frame queue id.
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+ * @fd: the frame descriptor which is enqueued.
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+ * @orpid: the order restoration point ID
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+ * @seqnum: the order sequence number
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+ * @last: must be set for the final frame if seqnum is shared (spilt frame)
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+ *
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+ * Performs an enqueue to a frame queue using the specified order restoration
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+ * point. The QMan device will ensure the order of frames placed on the
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+ * queue will be ordered as per the sequence number.
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+ *
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+ * In the case a frame is split it is possible to enqueue using the same
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+ * sequence number more than once. The final frame in a shared sequence number
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+ * most be indicated by setting last = 1. For non shared sequence numbers
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+ * last = 1 must always be set.
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+ *
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+ * Return 0 for successful enqueue, or -EBUSY if the enqueue ring is not ready,
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+ * or -ENODEV if there is no dpio service.
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+ */
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+int dpaa2_io_service_enqueue_orp_fq(struct dpaa2_io *d, u32 fqid,
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+ const struct dpaa2_fd *fd, u16 orpid,
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+ u16 seqnum, int last)
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+{
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+ struct qbman_eq_desc ed;
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+
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+ d = service_select(d);
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+ if (!d)
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+ return -ENODEV;
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+ qbman_eq_desc_clear(&ed);
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+ qbman_eq_desc_set_orp(&ed, 0, orpid, seqnum, !last);
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+ qbman_eq_desc_set_fq(&ed, fqid);
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+ return qbman_swp_enqueue(d->swp, &ed, fd);
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+}
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+EXPORT_SYMBOL(dpaa2_io_service_enqueue_orp_fq);
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+
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+/**
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+ * dpaa2_io_service_enqueue_orp_qd() - Enqueue a frame to a queueing destination
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+ * with order restoration
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+ * @d: the given DPIO service.
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+ * @qdid: the given queuing destination id.
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+ * @fd: the frame descriptor which is enqueued.
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+ * @orpid: the order restoration point ID
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+ * @seqnum: the order sequence number
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+ * @last: must be set for the final frame if seqnum is shared (spilt frame)
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+ *
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+ * Performs an enqueue to a frame queue using the specified order restoration
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+ * point. The QMan device will ensure the order of frames placed on the
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+ * queue will be ordered as per the sequence number.
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+ *
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+ * In the case a frame is split it is possible to enqueue using the same
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+ * sequence number more than once. The final frame in a shared sequence number
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+ * most be indicated by setting last = 1. For non shared sequence numbers
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+ * last = 1 must always be set.
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+ *
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+ * Return 0 for successful enqueue, or -EBUSY if the enqueue ring is not ready,
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+ * or -ENODEV if there is no dpio service.
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+ */
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+int dpaa2_io_service_enqueue_orp_qd(struct dpaa2_io *d, u32 qdid, u8 prio,
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+ u16 qdbin, const struct dpaa2_fd *fd,
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+ u16 orpid, u16 seqnum, int last)
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+{
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+ struct qbman_eq_desc ed;
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+
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+ d = service_select(d);
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+ if (!d)
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+ return -ENODEV;
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+ qbman_eq_desc_clear(&ed);
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+ qbman_eq_desc_set_orp(&ed, 0, orpid, seqnum, !last);
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+ qbman_eq_desc_set_qd(&ed, qdid, qdbin, prio);
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+ return qbman_swp_enqueue(d->swp, &ed, fd);
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+}
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+EXPORT_SYMBOL_GPL(dpaa2_io_service_enqueue_orp_qd);
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+
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+/**
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+ * dpaa2_io_service_orp_seqnum_drop() - Remove a sequence number from
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+ * an order restoration list
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+ * @d: the given DPIO service.
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+ * @orpid: Order restoration point to remove a sequence number from
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+ * @seqnum: Sequence number to remove
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+ *
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+ * Removes a frames sequence number from an order restoration point without
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+ * enqueing the frame. Used to indicate that the order restoration hardware
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+ * should not expect to see this sequence number. Typically used to indicate
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+ * a frame was terminated or dropped from a flow.
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+ *
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+ * Return 0 for successful enqueue, or -EBUSY if the enqueue ring is not ready,
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+ * or -ENODEV if there is no dpio service.
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+ */
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+int dpaa2_io_service_orp_seqnum_drop(struct dpaa2_io *d, u16 orpid, u16 seqnum)
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+{
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+ struct qbman_eq_desc ed;
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+ struct dpaa2_fd fd;
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+
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+ d = service_select(d);
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+ if (!d)
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+ return -ENODEV;
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+ qbman_eq_desc_clear(&ed);
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+ qbman_eq_desc_set_orp_hole(&ed, orpid, seqnum);
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+ return qbman_swp_enqueue(d->swp, &ed, &fd);
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+}
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+EXPORT_SYMBOL_GPL(dpaa2_io_service_orp_seqnum_drop);
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--- a/drivers/soc/fsl/dpio/qbman-portal.c
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+++ b/drivers/soc/fsl/dpio/qbman-portal.c
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@@ -413,6 +413,43 @@ void qbman_eq_desc_set_no_orp(struct qbm
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d->verb |= enqueue_rejects_to_fq;
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}
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+/**
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+ * qbman_eq_desc_set_orp() - Set order-restoration in the enqueue descriptor
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+ * @d: the enqueue descriptor.
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+ * @response_success: 1 = enqueue with response always; 0 = enqueue with
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+ * rejections returned on a FQ.
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+ * @oprid: the order point record id.
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+ * @seqnum: the order restoration sequence number.
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+ * @incomplete: indicates whether this is the last fragments using the same
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+ * sequence number.
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+ */
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+void qbman_eq_desc_set_orp(struct qbman_eq_desc *d, int respond_success,
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+ u16 oprid, u16 seqnum, int incomplete)
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+{
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+ d->verb |= (1 << QB_ENQUEUE_CMD_ORP_ENABLE_SHIFT);
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+ if (respond_success)
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+ d->verb |= enqueue_response_always;
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+ else
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+ d->verb |= enqueue_rejects_to_fq;
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+ d->orpid = cpu_to_le16(oprid);
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+ d->seqnum = cpu_to_le16((!!incomplete << 14) | seqnum);
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+}
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+
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+/**
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+ * qbman_eq_desc_set_orp_hole() - fill a hole in the order-restoration sequence
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+ * without any enqueue
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+ * @d: the enqueue descriptor.
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+ * @oprid: the order point record id.
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+ * @seqnum: the order restoration sequence number.
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+ */
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+void qbman_eq_desc_set_orp_hole(struct qbman_eq_desc *d, u16 oprid,
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+ u16 seqnum)
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+{
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+ d->verb |= (1 << QB_ENQUEUE_CMD_ORP_ENABLE_SHIFT) | enqueue_empty;
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+ d->orpid = cpu_to_le16(oprid);
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+ d->seqnum = cpu_to_le16(seqnum);
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+}
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+
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/*
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* Exactly one of the following descriptor "targets" should be set. (Calling any
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* one of these will replace the effect of any prior call to one of these.)
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--- a/drivers/soc/fsl/dpio/qbman-portal.h
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+++ b/drivers/soc/fsl/dpio/qbman-portal.h
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@@ -167,6 +167,9 @@ int qbman_result_has_new_result(struct q
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void qbman_eq_desc_clear(struct qbman_eq_desc *d);
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void qbman_eq_desc_set_no_orp(struct qbman_eq_desc *d, int respond_success);
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+void qbman_eq_desc_set_orp(struct qbman_eq_desc *d, int respond_success,
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+ u16 oprid, u16 seqnum, int incomplete);
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+void qbman_eq_desc_set_orp_hole(struct qbman_eq_desc *d, u16 oprid, u16 seqnum);
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void qbman_eq_desc_set_token(struct qbman_eq_desc *d, u8 token);
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void qbman_eq_desc_set_fq(struct qbman_eq_desc *d, u32 fqid);
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void qbman_eq_desc_set_qd(struct qbman_eq_desc *d, u32 qdid,
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--- a/include/soc/fsl/dpaa2-io.h
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+++ b/include/soc/fsl/dpaa2-io.h
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@@ -1,7 +1,7 @@
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/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
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/*
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* Copyright 2014-2016 Freescale Semiconductor Inc.
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- * Copyright NXP
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+ * Copyright 2017 NXP
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*
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*/
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#ifndef __FSL_DPAA2_IO_H
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@@ -121,6 +121,18 @@ struct dpaa2_io_store *dpaa2_io_store_cr
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void dpaa2_io_store_destroy(struct dpaa2_io_store *s);
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struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last);
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+/* Order Restoration Support */
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+int dpaa2_io_service_enqueue_orp_fq(struct dpaa2_io *d, u32 fqid,
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+ const struct dpaa2_fd *fd, u16 orpid,
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+ u16 seqnum, int last);
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+
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+int dpaa2_io_service_enqueue_orp_qd(struct dpaa2_io *d, u32 qdid, u8 prio,
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+ u16 qdbin, const struct dpaa2_fd *fd,
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+ u16 orpid, u16 seqnum, int last);
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+
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+int dpaa2_io_service_orp_seqnum_drop(struct dpaa2_io *d, u16 orpid,
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+ u16 seqnum);
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+
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int dpaa2_io_query_fq_count(struct dpaa2_io *d, u32 fqid,
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u32 *fcnt, u32 *bcnt);
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int dpaa2_io_query_bp_count(struct dpaa2_io *d, u16 bpid,
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