From: Anil Gurumurthy
This patch adds files to enable NVMe Target Support
Signed-off-by: Anil Gurumurthy
Signed-off-by: Giridhar Malavali
Signed-off-by: Darren Trapp
Signed-off-by: Himanshu Madhani
---
drivers/scsi/qla2xxx/qla_nvmet.c | 797 +++
drivers/scsi/qla2xxx/qla_nvmet.h | 129 +++
2 files changed, 926 insertions(+)
create mode 100644 drivers/scsi/qla2xxx/qla_nvmet.c
create mode 100644 drivers/scsi/qla2xxx/qla_nvmet.h
diff --git a/drivers/scsi/qla2xxx/qla_nvmet.c b/drivers/scsi/qla2xxx/qla_nvmet.c
new file mode 100644
index ..9d9a0ed68501
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_nvmet.c
@@ -0,0 +1,797 @@
+/*
+ * QLogic Fibre Channel HBA Driver
+ * Copyright (c) 2003-2017 QLogic Corporation
+ *
+ * See LICENSE.qla2xxx for copyright and licensing details.
+ */
+
+#include
+#include
+#include
+#include
+
+#include "qla_nvme.h"
+#include "qla_nvmet.h"
+
+static void qla_nvmet_send_resp_ctio(struct qla_qpair *qpair,
+ struct qla_nvmet_cmd *cmd, struct nvmefc_tgt_fcp_req *rsp);
+static void qla_nvmet_send_abts_ctio(struct scsi_qla_host *vha,
+ struct abts_recv_from_24xx *abts, bool flag);
+
+/*
+ * qla_nvmet_targetport_delete -
+ * Invoked by the nvmet to indicate that the target port has
+ * been deleted
+ */
+static void
+qla_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport)
+{
+ struct qla_nvmet_tgtport *tport = targetport->private;
+
+ if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ return;
+
+ complete(&tport->tport_del);
+}
+
+/*
+ * qlt_nvmet_ls_done -
+ * Invoked by the firmware interface to indicate the completion
+ * of an LS cmd
+ * Free all associated resources of the LS cmd
+ */
+static void qlt_nvmet_ls_done(void *ptr, int res)
+{
+ struct srb *sp = ptr;
+ struct srb_iocb *nvme = &sp->u.iocb_cmd;
+ struct nvmefc_tgt_ls_req *rsp = nvme->u.nvme.desc;
+ struct qla_nvmet_cmd *tgt_cmd = nvme->u.nvme.cmd;
+
+ if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ return;
+
+ ql_dbg(ql_dbg_nvme, sp->vha, 0x11001,
+ "%s: sp %p vha %p, rsp %p, cmd %p\n", __func__,
+ sp, sp->vha, nvme->u.nvme.desc, nvme->u.nvme.cmd);
+
+ rsp->done(rsp);
+
+ /* Free tgt_cmd */
+ kfree(tgt_cmd->buf);
+ kfree(tgt_cmd);
+ qla2x00_rel_sp(sp);
+}
+
+/*
+ * qla_nvmet_ls_rsp -
+ * Invoked by the nvme-t to complete the LS req.
+ * Prepare and send a response CTIO to the firmware.
+ */
+static int
+qla_nvmet_ls_rsp(struct nvmet_fc_target_port *tgtport,
+ struct nvmefc_tgt_ls_req *rsp)
+{
+ struct qla_nvmet_cmd *tgt_cmd =
+ container_of(rsp, struct qla_nvmet_cmd, cmd.ls_req);
+ struct scsi_qla_host *vha = tgt_cmd->vha;
+ struct srb_iocb *nvme;
+ int rval = QLA_FUNCTION_FAILED;
+ srb_t *sp;
+
+ ql_dbg(ql_dbg_nvme + ql_dbg_buffer, vha, 0x11002,
+ "Dumping the NVMET-LS response buffer\n");
+ ql_dump_buffer(ql_dbg_nvme + ql_dbg_buffer, vha, 0x2075,
+ (uint8_t *)rsp->rspbuf, rsp->rsplen);
+
+ /* Alloc SRB structure */
+ sp = qla2x00_get_sp(vha, NULL, GFP_ATOMIC);
+ if (!sp) {
+ ql_log(ql_log_info, vha, 0x11003, "Failed to allocate SRB\n");
+ return -ENOMEM;
+ }
+
+ sp->type = SRB_NVMET_LS;
+ sp->done = qlt_nvmet_ls_done;
+ sp->vha = vha;
+ sp->fcport = tgt_cmd->fcport;
+
+ nvme = &sp->u.iocb_cmd;
+ nvme->u.nvme.rsp_dma = rsp->rspdma;
+ nvme->u.nvme.rsp_len = rsp->rsplen;
+ nvme->u.nvme.exchange_address = tgt_cmd->atio.u.pt_ls4.exchange_address;
+ nvme->u.nvme.nport_handle = tgt_cmd->atio.u.pt_ls4.nport_handle;
+ nvme->u.nvme.vp_index = tgt_cmd->atio.u.pt_ls4.vp_index;
+
+ nvme->u.nvme.cmd = tgt_cmd; /* To be freed */
+ nvme->u.nvme.desc = rsp; /* Call back to nvmet */
+
+ rval = qla2x00_start_sp(sp);
+ if (rval != QLA_SUCCESS) {
+ ql_log(ql_log_warn, vha, 0x11004,
+ "qla2x00_start_sp failed = %d\n", rval);
+ return rval;
+ }
+
+ return 0;
+}
+
+/*
+ * qla_nvmet_fcp_op -
+ * Invoked by the nvme-t to complete the IO.
+ * Prepare and send a response CTIO to the firmware.
+ */
+static int
+qla_nvmet_fcp_op(struct nvmet_fc_target_port *tgtport,
+ struct nvmefc_tgt_fcp_req *rsp)
+{
+ struct qla_nvmet_cmd *tgt_cmd =
+ container_of(rsp, struct qla_nvmet_cmd, cmd.fcp_req);
+ struct scsi_qla_host *vha = tgt_cmd->vha;
+
+ if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
+ return 0;
+
+ /* Prepare and send CTIO 82h */
+ qla_nvmet_send_resp_ctio(vha->qpair, tgt_cmd, rsp);
+
+ return 0;
+}
+
+/*
+ * qla_nvmet_fcp_abort_done
+ * free up the used resources
+ */
+static void qla_nvmet_fcp_abort_done(void *ptr, int res)
+{
+ srb_t *sp = ptr;
+
+
