[SCSI] be2iscsi: Adding bsg interface for be2iscsi
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index d0c7d97..ff6f851 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -28,8 +28,11 @@
#include <linux/semaphore.h>
#include <linux/iscsi_boot_sysfs.h>
#include <linux/module.h>
+#include <linux/bsg-lib.h>
#include <scsi/libiscsi.h>
+#include <scsi/scsi_bsg_iscsi.h>
+#include <scsi/scsi_netlink.h>
#include <scsi/scsi_transport_iscsi.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_cmnd.h>
@@ -407,6 +410,8 @@
.max_sectors = BEISCSI_MAX_SECTORS,
.cmd_per_lun = BEISCSI_CMD_PER_LUN,
.use_clustering = ENABLE_CLUSTERING,
+ .vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID,
+
};
static struct scsi_transport_template *beiscsi_scsi_transport;
@@ -4135,6 +4140,76 @@
return beiscsi_iotask(task, sg, num_sg, xferlen, writedir);
}
+/**
+ * beiscsi_bsg_request - handle bsg request from ISCSI transport
+ * @job: job to handle
+ */
+static int beiscsi_bsg_request(struct bsg_job *job)
+{
+ struct Scsi_Host *shost;
+ struct beiscsi_hba *phba;
+ struct iscsi_bsg_request *bsg_req = job->request;
+ int rc = -EINVAL;
+ unsigned int tag;
+ struct be_dma_mem nonemb_cmd;
+ struct be_cmd_resp_hdr *resp;
+ struct iscsi_bsg_reply *bsg_reply = job->reply;
+ unsigned short status, extd_status;
+
+ shost = iscsi_job_to_shost(job);
+ phba = iscsi_host_priv(shost);
+
+ switch (bsg_req->msgcode) {
+ case ISCSI_BSG_HST_VENDOR:
+ nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
+ job->request_payload.payload_len,
+ &nonemb_cmd.dma);
+ if (nonemb_cmd.va == NULL) {
+ SE_DEBUG(DBG_LVL_1, "Failed to allocate memory for "
+ "beiscsi_bsg_request\n");
+ return -EIO;
+ }
+ tag = mgmt_vendor_specific_fw_cmd(&phba->ctrl, phba, job,
+ &nonemb_cmd);
+ if (!tag) {
+ SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n");
+ pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
+ nonemb_cmd.va, nonemb_cmd.dma);
+ return -EAGAIN;
+ } else
+ wait_event_interruptible(phba->ctrl.mcc_wait[tag],
+ phba->ctrl.mcc_numtag[tag]);
+ extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
+ status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
+ free_mcc_tag(&phba->ctrl, tag);
+ resp = (struct be_cmd_resp_hdr *)nonemb_cmd.va;
+ sg_copy_from_buffer(job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt,
+ nonemb_cmd.va, (resp->response_length
+ + sizeof(*resp)));
+ bsg_reply->reply_payload_rcv_len = resp->response_length;
+ bsg_reply->result = status;
+ bsg_job_done(job, bsg_reply->result,
+ bsg_reply->reply_payload_rcv_len);
+ pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
+ nonemb_cmd.va, nonemb_cmd.dma);
+ if (status || extd_status) {
+ SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed"
+ " status = %d extd_status = %d\n",
+ status, extd_status);
+ return -EIO;
+ }
+ break;
+
+ default:
+ SE_DEBUG(DBG_LVL_1, "Unsupported bsg command: 0x%x\n",
+ bsg_req->msgcode);
+ break;
+ }
+
+ return rc;
+}
+
static void beiscsi_quiesce(struct beiscsi_hba *phba)
{
struct hwi_controller *phwi_ctrlr;
@@ -4447,6 +4522,7 @@
.ep_poll = beiscsi_ep_poll,
.ep_disconnect = beiscsi_ep_disconnect,
.session_recovery_timedout = iscsi_session_recovery_timedout,
+ .bsg_request = beiscsi_bsg_request,
};
static struct pci_driver beiscsi_pci_driver = {