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vdpa/ifc: write queue count to MQ register

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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>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
This commit is contained in:
Andy Pei 2022-10-19 16:41:16 +08:00 committed by Chenbo Xia
parent b97f361cbf
commit eee3f67ef4
1 changed files with 32 additions and 0 deletions
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32
drivers/vdpa/ifc/base/ifcvf.c
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@ -202,6 +202,37 @@ io_write64_twopart(u64 val, u32 *lo, u32 *hi)
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 queues 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 @@ ifcvf_hw_enable(struct ifcvf_hw *hw)
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,