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From: Andy Pei <andy.pei@intel.com>
To: dev@dpdk.org
Cc: chenbo.xia@intel.com, rosen.xu@intel.com, wei.huang@intel.com,
gang.cao@intel.com, maxime.coquelin@redhat.com
Subject: [PATCH v4 4/8] vdpa/ifc: write queue count to MQ register
Date: Thu, 13 Oct 2022 16:44:30 +0800
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Write queue count to IFCVF_MQ_OFFSET register
to enable multi-queue feature.
Signed-off-by: Andy Pei <andy.pei@intel.com>
Signed-off-by: Huang Wei <wei.huang@intel.com>
---
drivers/vdpa/ifc/base/ifcvf.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/vdpa/ifc/base/ifcvf.c b/drivers/vdpa/ifc/base/ifcvf.c
index 81c68c0..60c7017 100644
--- a/drivers/vdpa/ifc/base/ifcvf.c
+++ b/drivers/vdpa/ifc/base/ifcvf.c
@@ -202,6 +202,37 @@
IFCVF_WRITE_REG32(val >> 32, hi);
}
+STATIC void
+ifcvf_enable_mq(struct ifcvf_hw *hw)
+{
+ u8 *mq_cfg;
+ u8 qid;
+ int nr_queue = 0;
+
+ for (qid = 0; qid < hw->nr_vring; qid++) {
+ if (!hw->vring[qid].enable)
+ continue;
+ nr_queue++;
+ }
+
+ if (nr_queue == 0) {
+ WARNINGOUT("no enabled vring\n");
+ return;
+ }
+
+ mq_cfg = hw->mq_cfg;
+ if (mq_cfg) {
+ if (hw->device_type == IFCVF_BLK) {
+ *(u32 *)mq_cfg = nr_queue;
+ RTE_LOG(INFO, PMD, "%d queue are enabled\n", nr_queue);
+ } else {
+ *(u32 *)mq_cfg = nr_queue / 2;
+ RTE_LOG(INFO, PMD, "%d queue pairs are enabled\n",
+ nr_queue / 2);
+ }
+ }
+}
+
STATIC int
ifcvf_hw_enable(struct ifcvf_hw *hw)
{
@@ -219,6 +250,7 @@
return -1;
}
+ ifcvf_enable_mq(hw);
for (i = 0; i < hw->nr_vring; i++) {
IFCVF_WRITE_REG16(i, &cfg->queue_select);
io_write64_twopart(hw->vring[i].desc, &cfg->queue_desc_lo,
--
1.8.3.1