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From: Nipun Gupta <nipun.gupta@nxp.com>
To: <dev@dpdk.org>
CC: <hemant.agrawal@nxp.com>, <jerin.jacob@caviumnetworks.com>,
<harry.van.haaren@intel.com>, <bruce.richardson@intel.com>,
<gage.eads@intel.com>, <shreyansh.jain@nxp.com>, Nipun Gupta
<nipun.gupta@nxp.com>
Date: Thu, 29 Jun 2017 15:57:58 +0530
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Subject: [dpdk-dev] [PATCH 14/21 v4] bus/fslmc: support enqueue with
multiple enqueue descriptors
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This patch adds the QBMAN API which support multiple enqueue
descriptors.
Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
---
drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h | 14 +++++
drivers/bus/fslmc/qbman/qbman_portal.c | 70 ++++++++++++++++++++++
drivers/bus/fslmc/rte_bus_fslmc_version.map | 1 +
3 files changed, 85 insertions(+)
diff --git a/drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h b/drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h
index 7731772..39407c8 100644
--- a/drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h
+++ b/drivers/bus/fslmc/qbman/include/fsl_qbman_portal.h
@@ -883,6 +883,20 @@ void qbman_eq_desc_set_dca(struct qbman_eq_desc *d, int enable,
*/
int qbman_swp_enqueue(struct qbman_swp *s, const struct qbman_eq_desc *d,
const struct qbman_fd *fd);
+/**
+ * qbman_swp_enqueue_multiple_eqdesc() - Enqueue multiple frames with separte
+ * enqueue descriptors.
+ * @s: the software portal used for enqueue.
+ * @d: the enqueue descriptors
+ * @fd: the frame descriptor to be enqueued.
+ * @num_frames: the number of the frames to be enqueued.
+ *
+ * Return the number of enqueued frames, -EBUSY if the EQCR is not ready.
+ */
+int qbman_swp_enqueue_multiple_eqdesc(struct qbman_swp *s,
+ const struct qbman_eq_desc *d,
+ const struct qbman_fd *fd,
+ int num_frames);
/* TODO:
* qbman_swp_enqueue_thresh() - Set threshold for EQRI interrupt.
diff --git a/drivers/bus/fslmc/qbman/qbman_portal.c b/drivers/bus/fslmc/qbman/qbman_portal.c
index be4e2e5..137b55d 100644
--- a/drivers/bus/fslmc/qbman/qbman_portal.c
+++ b/drivers/bus/fslmc/qbman/qbman_portal.c
@@ -574,6 +574,76 @@ int qbman_swp_enqueue(struct qbman_swp *s, const struct qbman_eq_desc *d,
return qbman_swp_enqueue_ring_mode(s, d, fd);
}
+int qbman_swp_enqueue_multiple_eqdesc(struct qbman_swp *s,
+ const struct qbman_eq_desc *d,
+ const struct qbman_fd *fd,
+ int num_frames)
+{
+ uint32_t *p;
+ const uint32_t *cl = qb_cl(d);
+ uint32_t eqcr_ci, eqcr_pi;
+ uint8_t diff;
+ int i, num_enqueued = 0;
+ uint64_t addr_cena;
+
+ if (!s->eqcr.available) {
+ eqcr_ci = s->eqcr.ci;
+ s->eqcr.ci = qbman_cena_read_reg(&s->sys,
+ QBMAN_CENA_SWP_EQCR_CI) & 0xF;
+ diff = qm_cyc_diff(QBMAN_EQCR_SIZE,
+ eqcr_ci, s->eqcr.ci);
+ s->eqcr.available += diff;
+ if (!diff)
+ return 0;
+ }
+
+ eqcr_pi = s->eqcr.pi;
+ num_enqueued = (s->eqcr.available < num_frames) ?
+ s->eqcr.available : num_frames;
+ s->eqcr.available -= num_enqueued;
+ /* Fill in the EQCR ring */
+ for (i = 0; i < num_enqueued; i++) {
+ p = qbman_cena_write_start_wo_shadow(&s->sys,
+ QBMAN_CENA_SWP_EQCR(eqcr_pi & 7));
+ memcpy(&p[1], &cl[1], 28);
+ memcpy(&p[8], &fd[i], sizeof(*fd));
+ eqcr_pi++;
+ eqcr_pi &= 0xF;
+ /*Pointing to the next enqueue descriptor*/
+ cl += (sizeof(struct qbman_eq_desc) / sizeof(uint32_t));
+ }
+
+ lwsync();
+
+ /* Set the verb byte, have to substitute in the valid-bit */
+ eqcr_pi = s->eqcr.pi;
+ cl = qb_cl(d);
+ for (i = 0; i < num_enqueued; i++) {
+ p = qbman_cena_write_start_wo_shadow(&s->sys,
+ QBMAN_CENA_SWP_EQCR(eqcr_pi & 7));
+ p[0] = cl[0] | s->eqcr.pi_vb;
+ eqcr_pi++;
+ eqcr_pi &= 0xF;
+ if (!(eqcr_pi & 7))
+ s->eqcr.pi_vb ^= QB_VALID_BIT;
+ /*Pointing to the next enqueue descriptor*/
+ cl += (sizeof(struct qbman_eq_desc) / sizeof(uint32_t));
+ }
+
+ /* Flush all the cacheline without load/store in between */
+ eqcr_pi = s->eqcr.pi;
+ addr_cena = (uint64_t)s->sys.addr_cena;
+ for (i = 0; i < num_enqueued; i++) {
+ dcbf((uint64_t *)(addr_cena +
+ QBMAN_CENA_SWP_EQCR(eqcr_pi & 7)));
+ eqcr_pi++;
+ eqcr_pi &= 0xF;
+ }
+ s->eqcr.pi = eqcr_pi;
+
+ return num_enqueued;
+}
+
/*************************/
/* Static (push) dequeue */
/*************************/
diff --git a/drivers/bus/fslmc/rte_bus_fslmc_version.map b/drivers/bus/fslmc/rte_bus_fslmc_version.map
index c879e2f..9950557 100644
--- a/drivers/bus/fslmc/rte_bus_fslmc_version.map
+++ b/drivers/bus/fslmc/rte_bus_fslmc_version.map
@@ -69,6 +69,7 @@ DPDK_17.08 {
qbman_result_SCN_state_in_mem;
qbman_swp_dqrr_consume;
qbman_swp_dqrr_next;
+ qbman_swp_enqueue_multiple_eqdesc;
qbman_swp_push_set;
rte_dpaa2_alloc_dpci_dev;
rte_fslmc_object_register;
--
1.9.1