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authorNipun Gupta <nipun.gupta@nxp.com>2018-01-17 17:09:13 +0530
committerJerin Jacob <jerin.jacob@caviumnetworks.com>2018-01-19 16:09:56 +0100
commit496324d2a595bf87c5b89553c3d120a0f2e62dcd (patch)
tree76112ac3fdcfa24e7712b4e3ed588d36b66971ae /drivers/bus/fslmc
parent7b6edb640b735f4a9807b78812c81eacebff5528 (diff)
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bus/fslmc: add flag to configure DCA in QBMAN multi Tx
With the current QBMAN multi-tx API, we need to create separate enqueue descriptors for each of the packet which is required to be enqueued to the hardware, once we support Atomic Queues (with DCA) in dpaa2 drivers. Creating enqueue descriptor for each packet is costly and have significant performance impact. This patch introduces a flag parameter in the QBMAN multi-tx API, so that DCA configuration (and later on ORP/ODP for ordered queues) can be passed using flags and be updated in the EQCR using this flag. Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com> Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Diffstat (limited to 'drivers/bus/fslmc')
-rw-r--r--drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h5
-rw-r--r--drivers/bus/fslmc/qbman/qbman_portal.c7
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h b/drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h
index 10f38ca..95d785f 100644
--- a/drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h
+++ b/drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h
@@ -566,6 +566,9 @@ int qbman_result_is_FQPN(const struct qbman_result *dq);
/* volatile dequeue command is expired */
#define QBMAN_DQ_STAT_EXPIRED 0x01
+#define QBMAN_EQCR_DCA_IDXMASK 0x0f
+#define QBMAN_ENQUEUE_FLAG_DCA (1ULL << 31)
+
/**
* qbman_result_DQ_flags() - Get the STAT field of dequeue response
* @dq: the dequeue result.
@@ -956,6 +959,7 @@ int qbman_swp_enqueue(struct qbman_swp *s, const struct qbman_eq_desc *d,
int qbman_swp_enqueue_multiple(struct qbman_swp *s,
const struct qbman_eq_desc *d,
const struct qbman_fd *fd,
+ uint32_t *flags,
int num_frames);
/**
* qbman_swp_enqueue_multiple_desc() - Enqueue multiple frames with
@@ -963,6 +967,7 @@ int qbman_swp_enqueue_multiple(struct qbman_swp *s,
* @s: the software portal used for enqueue.
* @d: the enqueue descriptor.
* @fd: the frame descriptor to be enqueued.
+ * @flags: bit-mask of QBMAN_ENQUEUE_FLAG_*** options
* @num_frames: the number of the frames to be enqueued.
*
* Return the number of enqueued frames, -EBUSY if the EQCR is not ready.
diff --git a/drivers/bus/fslmc/qbman/qbman_portal.c b/drivers/bus/fslmc/qbman/qbman_portal.c
index b02dfa2..2d324f7 100644
--- a/drivers/bus/fslmc/qbman/qbman_portal.c
+++ b/drivers/bus/fslmc/qbman/qbman_portal.c
@@ -496,6 +496,7 @@ int qbman_swp_enqueue(struct qbman_swp *s, const struct qbman_eq_desc *d,
int qbman_swp_enqueue_multiple(struct qbman_swp *s,
const struct qbman_eq_desc *d,
const struct qbman_fd *fd,
+ uint32_t *flags,
int num_frames)
{
uint32_t *p;
@@ -538,6 +539,12 @@ int qbman_swp_enqueue_multiple(struct qbman_swp *s,
p = qbman_cena_write_start_wo_shadow(&s->sys,
QBMAN_CENA_SWP_EQCR(eqcr_pi & 7));
p[0] = cl[0] | s->eqcr.pi_vb;
+ if (flags && (flags[i] & QBMAN_ENQUEUE_FLAG_DCA)) {
+ struct qbman_eq_desc *d = (struct qbman_eq_desc *)p;
+
+ d->eq.dca = (1 << QB_ENQUEUE_CMD_DCA_EN_SHIFT) |
+ ((flags[i]) & QBMAN_EQCR_DCA_IDXMASK);
+ }
eqcr_pi++;
eqcr_pi &= 0xF;
if (!(eqcr_pi & 7))