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vdpa/ifcvf: fix the calculation of queuepair

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[ Upstream commit db5db1a00d0816207be3a0166fcb4f523eaf3b52 ]

The q_pair_id to address a queue pair in the lm bar should be
calculated by queue_id / 2 rather than queue_id / nr_vring.

Fixes: 2ddae773c93b ("vDPA/ifcvf: detect and use the onboard number of queues directly")
Signed-off-by: Angus Chen <angus.chen@jaguarmicro.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Zhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20220923091013.191-1-angus.chen@jaguarmicro.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Angus Chen 2022-09-23 17:10:13 +08:00 committed by Greg Kroah-Hartman
parent 4755d9d2c9
commit a0e3719e03
1 changed files with 2 additions and 2 deletions
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4
drivers/vdpa/ifcvf/ifcvf_base.c
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@ -327,7 +327,7 @@ u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid)
u32 q_pair_id;
ifcvf_lm = (struct ifcvf_lm_cfg __iomem *)hw->lm_cfg;
q_pair_id = qid / hw->nr_vring;
q_pair_id = qid / 2;
avail_idx_addr = &ifcvf_lm->vring_lm_cfg[q_pair_id].idx_addr[qid % 2];
last_avail_idx = ifc_ioread16(avail_idx_addr);
@ -341,7 +341,7 @@ int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num)
u32 q_pair_id;
ifcvf_lm = (struct ifcvf_lm_cfg __iomem *)hw->lm_cfg;
q_pair_id = qid / hw->nr_vring;
q_pair_id = qid / 2;
avail_idx_addr = &ifcvf_lm->vring_lm_cfg[q_pair_id].idx_addr[qid % 2];
hw->vring[qid].last_avail_idx = num;
ifc_iowrite16(num, avail_idx_addr);