path: root/drivers/scsi/pm8001/pm8001_init.c

/*
 * PMC-Sierra PM8001/8081/8088/8089 SAS/SATA based host adapters driver
 *
 * Copyright (c) 2008-2009 USI Co., Ltd.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 */

#include <linux/slab.h>
#include "pm8001_sas.h"
#include "pm8001_chips.h"
#include "pm80xx_hwi.h"

static ulong logging_level = PM8001_FAIL_LOGGING | PM8001_IOERR_LOGGING |
				PM8001_EVENT_LOGGING | PM8001_INIT_LOGGING;
module_param(logging_level, ulong, 0644);
MODULE_PARM_DESC(logging_level, " bits for enabling logging info.");

static ulong link_rate = LINKRATE_15 | LINKRATE_30 | LINKRATE_60 | LINKRATE_120;
module_param(link_rate, ulong, 0644);
MODULE_PARM_DESC(link_rate, "Enable link rate.\n"
		" 1: Link rate 1.5G\n"
		" 2: Link rate 3.0G\n"
		" 4: Link rate 6.0G\n"
		" 8: Link rate 12.0G\n");

bool pm8001_use_msix = true;
module_param_named(use_msix, pm8001_use_msix, bool, 0444);
MODULE_PARM_DESC(zoned, "Use MSIX interrupts. Default: true");

static bool pm8001_use_tasklet = true;
module_param_named(use_tasklet, pm8001_use_tasklet, bool, 0444);
MODULE_PARM_DESC(zoned, "Use MSIX interrupts. Default: true");

static bool pm8001_read_wwn = true;
module_param_named(read_wwn, pm8001_read_wwn, bool, 0444);
MODULE_PARM_DESC(zoned, "Get WWN from the controller. Default: true");

uint pcs_event_log_severity = 0x03;
module_param(pcs_event_log_severity, int, 0644);
MODULE_PARM_DESC(pcs_event_log_severity, "PCS event log severity level");

static struct scsi_transport_template *pm8001_stt;
static int pm8001_init_ccb_tag(struct pm8001_hba_info *);

/*
 * chip info structure to identify chip key functionality as
 * encryption available/not, no of ports, hw specific function ref
 */
static const struct pm8001_chip_info pm8001_chips[] = {
	[chip_8001] = {0,  8, &pm8001_8001_dispatch,},
	[chip_8008] = {0,  8, &pm8001_80xx_dispatch,},
	[chip_8009] = {1,  8, &pm8001_80xx_dispatch,},
	[chip_8018] = {0,  16, &pm8001_80xx_dispatch,},
	[chip_8019] = {1,  16, &pm8001_80xx_dispatch,},
	[chip_8074] = {0,  8, &pm8001_80xx_dispatch,},
	[chip_8076] = {0,  16, &pm8001_80xx_dispatch,},
	[chip_8077] = {0,  16, &pm8001_80xx_dispatch,},
	[chip_8006] = {0,  16, &pm8001_80xx_dispatch,},
	[chip_8070] = {0,  8, &pm8001_80xx_dispatch,},
	[chip_8072] = {0,  16, &pm8001_80xx_dispatch,},
};
static int pm8001_id;

LIST_HEAD(hba_list);

struct workqueue_struct *pm8001_wq;

static void pm8001_map_queues(struct Scsi_Host *shost)
{
	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
	struct blk_mq_queue_map *qmap = &shost->tag_set.map[HCTX_TYPE_DEFAULT];

	if (pm8001_ha->number_of_intr > 1) {
		blk_mq_map_hw_queues(qmap, &pm8001_ha->pdev->dev, 1);
		return;
	}

	blk_mq_map_queues(qmap);
}

/*
 * The main structure which LLDD must register for scsi core.
 */
static const struct scsi_host_template pm8001_sht = {
	LIBSAS_SHT_BASE
	.scan_finished		= pm8001_scan_finished,
	.scan_start		= pm8001_scan_start,
	.can_queue		= 1,
	.sg_tablesize		= PM8001_MAX_DMA_SG,
	.max_sectors		= PM8001_MAX_SECTORS,
	.shost_groups		= pm8001_host_groups,
	.sdev_groups		= pm8001_sdev_groups,
	.track_queue_depth	= 1,
	.cmd_per_lun		= 32,
	.map_queues		= pm8001_map_queues,
};

/*
 * Sas layer call this function to execute specific task.
 */
static struct sas_domain_function_template pm8001_transport_ops = {
	.lldd_dev_found		= pm8001_dev_found,
	.lldd_dev_gone		= pm8001_dev_gone,

	.lldd_execute_task	= pm8001_queue_command,
	.lldd_control_phy	= pm8001_phy_control,

	.lldd_abort_task	= pm8001_abort_task,
	.lldd_abort_task_set	= sas_abort_task_set,
	.lldd_clear_task_set	= pm8001_clear_task_set,
	.lldd_I_T_nexus_reset   = pm8001_I_T_nexus_reset,
	.lldd_lu_reset		= pm8001_lu_reset,
	.lldd_query_task	= pm8001_query_task,
	.lldd_port_formed	= pm8001_port_formed,
	.lldd_tmf_exec_complete = pm8001_setds_completion,
	.lldd_tmf_aborted	= pm8001_tmf_aborted,
};

/**
 * pm8001_phy_init - initiate our adapter phys
 * @pm8001_ha: our hba structure.
 * @phy_id: phy id.
 */
static void pm8001_phy_init(struct pm8001_hba_info *pm8001_ha, int phy_id)
{
	struct pm8001_phy *phy = &pm8001_ha->phy[phy_id];
	struct asd_sas_phy *sas_phy = &phy->sas_phy;
	phy->phy_state = PHY_LINK_DISABLE;
	phy->pm8001_ha = pm8001_ha;
	phy->minimum_linkrate = SAS_LINK_RATE_1_5_G