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nvme: add checks for sq_head

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Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I8519a4b68db44cb8fe6dd251a52bf0f1dca73c32

Reviewed-on: https://review.gerrithub.io/391890
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Jim Harris 2017-12-14 17:24:51 -07:00 committed by Daniel Verkamp
parent 28ff7a0da7
commit 9c1d97a247
1 changed files with 6 additions and 0 deletions
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6
lib/nvme/nvme_pcie.c
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@ -160,6 +160,7 @@ struct nvme_pcie_qpair {
uint16_t sq_tail;
uint16_t cq_head;
uint16_t sq_head;
uint8_t phase;
@ -1096,6 +1097,10 @@ nvme_pcie_qpair_submit_tracker(struct spdk_nvme_qpair *qpair, struct nvme_tracke
pqpair->sq_tail = 0;
}
if (pqpair->sq_tail == pqpair->sq_head) {
SPDK_ERRLOG("sq_tail is passing sq_head!\n");
}
spdk_wmb();
g_thread_mmio_ctrlr = pctrlr;
if (spdk_likely(nvme_pcie_qpair_update_mmio_required(qpair,
@ -1981,6 +1986,7 @@ nvme_pcie_qpair_process_completions(struct spdk_nvme_qpair *qpair, uint32_t max_
#endif
tr = &pqpair->tr[cpl->cid];
pqpair->sq_head = cpl->sqhd;
if (tr->active) {
nvme_pcie_qpair_complete_tracker(qpair, tr, cpl, true);