[SCSI] be2iscsi: Add support for iscsi boot

This patch contains changes for adding support for iscsi_boot.
Have modified to make read of mac address from chip as a function.

  The mac_address is being cached after teh first call as it is
not expected to change

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 71 insertions, 0 deletions

diff --git a/drivers/scsi/be2iscsi/be_mgmt.c b/drivers/scsi/be2iscsi/be_mgmt.c
index 3f3fab91a7d1..26350e470bcc 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.c
+++ b/drivers/scsi/be2iscsi/be_mgmt.c
@@ -20,6 +20,77 @@
 
 #include "be_mgmt.h"
 #include "be_iscsi.h"
+#include <scsi/scsi_transport_iscsi.h>
+
+unsigned int beiscsi_get_boot_target(struct beiscsi_hba *phba)
+{
+        struct be_ctrl_info *ctrl = &phba->ctrl;
+        struct be_mcc_wrb *wrb;
+        struct be_cmd_req_get_mac_addr *req;
+        unsigned int tag = 0;
+
+        SE_DEBUG(DBG_LVL_8, "In bescsi_get_boot_target\n");
+        spin_lock(&ctrl->mbox_lock);
+        tag = alloc_mcc_tag(phba);
+        if (!tag) {
+                spin_unlock(&ctrl->mbox_lock);
+                return tag;
+        }
+
+        wrb = wrb_from_mccq(phba);
+        req = embedded_payload(wrb);
+        wrb->tag0 |= tag;
+        be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
+        be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
+                           OPCODE_ISCSI_INI_BOOT_GET_BOOT_TARGET,
+                           sizeof(*req));
+
+        be_mcc_notify(phba);
+        spin_unlock(&ctrl->mbox_lock);
+        return tag;
+}
+
+unsigned int beiscsi_get_session_info(struct beiscsi_hba *phba,
+                                  u32 boot_session_handle,
+                                  struct be_dma_mem *nonemb_cmd)
+{
+        struct be_ctrl_info *ctrl = &phba->ctrl;
+        struct be_mcc_wrb *wrb;
+        unsigned int tag = 0;
+        struct  be_cmd_req_get_session *req;
+        struct be_cmd_resp_get_session *resp;
+        struct be_sge *sge;
+
+        SE_DEBUG(DBG_LVL_8, "In beiscsi_get_session_info\n");
+        spin_lock(&ctrl->mbox_lock);
+        tag = alloc_mcc_tag(phba);
+        if (!tag) {
+                spin_unlock(&ctrl->mbox_lock);
+                return tag;
+        }
+
+        nonemb_cmd->size = sizeof(*resp);
+        req = nonemb_cmd->va;
+        memset(req, 0, sizeof(*req));
+        wrb = wrb_from_mccq(phba);
+        sge = nonembedded_sgl(wrb);
+        wrb->tag0 |= tag;
+
+
+        wrb->tag0 |= tag;
+        be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1);
+        be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
+                           OPCODE_ISCSI_INI_SESSION_GET_A_SESSION,
+                           sizeof(*resp));
+        req->session_handle = boot_session_handle;
+        sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
+        sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
+        sge->len = cpu_to_le32(nonemb_cmd->size);
+
+        be_mcc_notify(phba);
+        spin_unlock(&ctrl->mbox_lock);
+        return tag;
+}
 
 int mgmt_get_fw_config(struct be_ctrl_info *ctrl,
                                 struct beiscsi_hba *phba)