path: root/drivers/scsi/be2iscsi/be_mgmt.c

/**
 * Copyright (C) 2005 - 2011 Emulex
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.  The full GNU General
 * Public License is included in this distribution in the file called COPYING.
 *
 * Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com)
 *
 * Contact Information:
 * linux-drivers@emulex.com
 *
 * Emulex
 * 3333 Susan Street
 * Costa Mesa, CA 92626
 */

#include <linux/bsg-lib.h>
#include <scsi/scsi_transport_iscsi.h>
#include <scsi/scsi_bsg_iscsi.h>
#include "be_mgmt.h"
#include "be_iscsi.h"

unsigned int mgmt_get_boot_target(struct beiscsi_hba *phba)
{
	struct be_ctrl_info *ctrl = &phba->ctrl;
	struct be_mcc_wrb *wrb;
	struct be_cmd_get_boot_target_req *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(struct be_cmd_get_boot_target_resp));

	be_mcc_notify(phba);
	spin_unlock(&ctrl->mbox_lock);
	return tag;
}

unsigned int mgmt_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_get_session_req *req;
	struct be_cmd_get_session_resp *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)
{
	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
	struct be_fw_cfg *req = embedded_payload(wrb);
	int status = 0;

	spin_lock(&ctrl->mbox_lock);
	memset(wrb, 0, sizeof(*wrb));

	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);

	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
			   OPCODE_COMMON_QUERY_FIRMWARE_CONFIG, sizeof(*req));
	status = be_mbox_notify(ctrl);
	if (!status) {
		struct be_fw_cfg *pfw_cfg;
		pfw_cfg = req;
		phba->fw_config.phys_port = pfw_cfg->phys_port;
		phba->fw_config.iscsi_icd_start =
					pfw_cfg->ulp[0].icd_base;
		phba->fw_config.iscsi_icd_count =
					pfw_cfg->ulp[0].icd_count;
		phba->fw_config.iscsi_cid_start =
					pfw_cfg->ulp[0].sq_base;
		phba->fw_config.iscsi_cid_count =
					pfw_cfg->ulp[0].sq_count;
		if (phba->fw_config.iscsi_cid_count > (BE2_MAX_SESSIONS / 2)) {
			SE_DEBUG(DBG_LVL_8,
				"FW reported MAX CXNS as %d\t"
				"Max Supported = %d.\n",
				phba->fw_config.iscsi_cid_count,
				BE2_MAX_SESSIONS);
			phba->fw_config.iscsi_cid_count = BE2_MAX_SESSIONS / 2;
		}
	} else {
		shost_printk(KERN_WARNING, phba->shost,
			     "Failed in mgmt_get_fw_config\n");
	}

	spin_unlock(&ctrl->mbox_lock);
	return status;
}

int mgmt_check_supported_fw(struct be_ctrl_info *ctrl,
				      struct beiscsi_hba *phba)
{
	struct be_dma_mem nonemb_cmd;
	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
	struct be_mgmt_controller_attributes *req;
	struct be_sge *sge = nonembedded_sgl(wrb);
	int status = 0;

	nonemb_cmd.va = pci_alloc_consistent<