Release 4.11 drivers/scsi/smartpqi/smartpqi_sas_transport.c

Directory: drivers/scsi/smartpqi
/*
 *    driver for Microsemi PQI-based storage controllers
 *    Copyright (c) 2016 Microsemi Corporation
 *    Copyright (c) 2016 PMC-Sierra, Inc.
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; version 2 of the License.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *    NON INFRINGEMENT.  See the GNU General Public License for more details.
 *
 *    Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
 *
 */

#include <linux/kernel.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_transport_sas.h>
#include "smartpqi.h"



static struct pqi_sas_phy *pqi_alloc_sas_phy(struct pqi_sas_port *pqi_sas_port)
{
	struct pqi_sas_phy *pqi_sas_phy;
	struct sas_phy *phy;

	pqi_sas_phy = kzalloc(sizeof(*pqi_sas_phy), GFP_KERNEL);
	if (!pqi_sas_phy)
		return NULL;

	phy = sas_phy_alloc(pqi_sas_port->parent_node->parent_dev,
		pqi_sas_port->next_phy_index);
	if (!phy) {
		kfree(pqi_sas_phy);
		return NULL;
	}

	pqi_sas_port->next_phy_index++;
	pqi_sas_phy->phy = phy;
	pqi_sas_phy->parent_port = pqi_sas_port;

	return pqi_sas_phy;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 94 100.00% 1 100.00%
Total 94 100.00% 1 100.00%



static void pqi_free_sas_phy(struct pqi_sas_phy *pqi_sas_phy)
{
	struct sas_phy *phy = pqi_sas_phy->phy;

	sas_port_delete_phy(pqi_sas_phy->parent_port->port, phy);
	sas_phy_free(phy);
	if (pqi_sas_phy->added_to_port)
		list_del(&pqi_sas_phy->phy_list_entry);
	kfree(pqi_sas_phy);
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 55 100.00% 1 100.00%
Total 55 100.00% 1 100.00%



static int pqi_sas_port_add_phy(struct pqi_sas_phy *pqi_sas_phy)
{
	int rc;
	struct pqi_sas_port *pqi_sas_port;
	struct sas_phy *phy;
	struct sas_identify *identify;

	pqi_sas_port = pqi_sas_phy->parent_port;
	phy = pqi_sas_phy->phy;

	identify = &phy->identify;
	memset(identify, 0, sizeof(*identify));
	identify->sas_address = pqi_sas_port->sas_address;
	identify->device_type = SAS_END_DEVICE;
	identify->initiator_port_protocols = SAS_PROTOCOL_STP;
	identify->target_port_protocols = SAS_PROTOCOL_STP;
	phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
	phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
	phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
	phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
	phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;

	rc = sas_phy_add(pqi_sas_phy->phy);
	if (rc)
		return rc;

	sas_port_add_phy(pqi_sas_port->port, pqi_sas_phy->phy);
	list_add_tail(&pqi_sas_phy->phy_list_entry,
		&pqi_sas_port->phy_list_head);
	pqi_sas_phy->added_to_port = true;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 166 100.00% 1 100.00%
Total 166 100.00% 1 100.00%



static int pqi_sas_port_add_rphy(struct pqi_sas_port *pqi_sas_port,
	struct sas_rphy *rphy)
{
	struct sas_identify *identify;

	identify = &rphy->identify;
	identify->sas_address = pqi_sas_port->sas_address;
	identify->initiator_port_protocols = SAS_PROTOCOL_STP;
	identify->target_port_protocols = SAS_PROTOCOL_STP;

	return sas_rphy_add(rphy);
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 54 100.00% 1 100.00%
Total 54 100.00% 1 100.00%



static struct pqi_sas_port *pqi_alloc_sas_port(
	struct pqi_sas_node *pqi_sas_node, u64 sas_address)
{
	int rc;
	struct pqi_sas_port *pqi_sas_port;
	struct sas_port *port;

	pqi_sas_port = kzalloc(sizeof(*pqi_sas_port), GFP_KERNEL);
	if (!pqi_sas_port)
		return NULL;

	INIT_LIST_HEAD(&pqi_sas_port->phy_list_head);
	pqi_sas_port->parent_node = pqi_sas_node;

	port = sas_port_alloc_num(pqi_sas_node->parent_dev);
	if (!port)
		goto free_pqi_port;

	rc = sas_port_add(port);
	if (rc)
		goto free_sas_port;

	pqi_sas_port->port = port;
	pqi_sas_port->sas_address = sas_address;
	list_add_tail(&pqi_sas_port->port_list_entry,
		&pqi_sas_node->port_list_head);

	return pqi_sas_port;

free_sas_port:
	sas_port_free(port);
free_pqi_port:
	kfree(pqi_sas_port);

	return NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 140 100.00% 1 100.00%
Total 140 100.00% 1 100.00%



static void pqi_free_sas_port(struct pqi_sas_port *pqi_sas_port)
{
	struct pqi_sas_phy *pqi_sas_phy;
	struct pqi_sas_phy *next;

	list_for_each_entry_safe(pqi_sas_phy, next,
			&pqi_sas_port->phy_list_head, phy_list_entry)
		pqi_free_sas_phy(pqi_sas_phy);

	sas_port_delete(pqi_sas_port->port);
	list_del(&pqi_sas_port->port_list_entry);
	kfree(pqi_sas_port);
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 56 100.00% 1 100.00%
Total 56 100.00% 1 100.00%



static struct pqi_sas_node *pqi_alloc_sas_node(struct device *parent_dev)
{
	struct pqi_sas_node *pqi_sas_node;

	pqi_sas_node = kzalloc(sizeof(*pqi_sas_node), GFP_KERNEL);
	if (pqi_sas_node) {
		pqi_sas_node->parent_dev = parent_dev;
		INIT_LIST_HEAD(&pqi_sas_node->port_list_head);
	}

	return pqi_sas_node;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 54 100.00% 1 100.00%
Total 54 100.00% 1 100.00%



static void pqi_free_sas_node(struct pqi_sas_node *pqi_sas_node)
{
	struct pqi_sas_port *pqi_sas_port;
	struct pqi_sas_port *next;

	if (!pqi_sas_node)
		return;

	list_for_each_entry_safe(pqi_sas_port, next,
			&pqi_sas_node->port_list_head, port_list_entry)
		pqi_free_sas_port(pqi_sas_port);

	kfree(pqi_sas_node);
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 47 100.00% 1 100.00%
Total 47 100.00% 1 100.00%



struct pqi_scsi_dev *pqi_find_device_by_sas_rphy(
	struct pqi_ctrl_info *ctrl_info, struct sas_rphy *rphy)
{
	struct pqi_scsi_dev *device;

	list_for_each_entry(device, &ctrl_info->scsi_device_list,
		scsi_device_list_entry) {
		if (!device->sas_port)
			continue;
		if (device->sas_port->rphy == rphy)
			return device;
	}

	return NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 56 100.00% 1 100.00%
Total 56 100.00% 1 100.00%



int pqi_add_sas_host(struct Scsi_Host *shost, struct pqi_ctrl_info *ctrl_info)
{
	int rc;
	struct device *parent_dev;
	struct pqi_sas_node *pqi_sas_node;
	struct pqi_sas_port *pqi_sas_port;
	struct pqi_sas_phy *pqi_sas_phy;

	parent_dev = &shost->shost_gendev;

	pqi_sas_node = pqi_alloc_sas_node(parent_dev);
	if (!pqi_sas_node)
		return -ENOMEM;

	pqi_sas_port = pqi_alloc_sas_port(pqi_sas_node, ctrl_info->sas_address);
	if (!pqi_sas_port) {
		rc = -ENODEV;
		goto free_sas_node;
	}

	pqi_sas_phy = pqi_alloc_sas_phy(pqi_sas_port);
	if (!pqi_sas_phy) {
		rc = -ENODEV;
		goto free_sas_port;
	}

	rc = pqi_sas_port_add_phy(pqi_sas_phy);
	if (rc)
		goto free_sas_phy;

	ctrl_info->sas_host = pqi_sas_node;

	return 0;

free_sas_phy:
	pqi_free_sas_phy(pqi_sas_phy);
free_sas_port:
	pqi_free_sas_port(pqi_sas_port);
free_sas_node:
	pqi_free_sas_node(pqi_sas_node);

	return rc;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 156 100.00% 1 100.00%
Total 156 100.00% 1 100.00%



void pqi_delete_sas_host(struct pqi_ctrl_info *ctrl_info)
{
	pqi_free_sas_node(ctrl_info->sas_host);
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 17 100.00% 1 100.00%
Total 17 100.00% 1 100.00%



int pqi_add_sas_device(struct pqi_sas_node *pqi_sas_node,
	struct pqi_scsi_dev *device)
{
	int rc;
	struct pqi_sas_port *pqi_sas_port;
	struct sas_rphy *rphy;

	pqi_sas_port = pqi_alloc_sas_port(pqi_sas_node, device->sas_address);
	if (!pqi_sas_port)
		return -ENOMEM;

	rphy = sas_end_device_alloc(pqi_sas_port->port);
	if (!rphy) {
		rc = -ENODEV;
		goto free_sas_port;
	}

	pqi_sas_port->rphy = rphy;
	device->sas_port = pqi_sas_port;

	rc = pqi_sas_port_add_rphy(pqi_sas_port, rphy);
	if (rc)
		goto free_sas_port;

	return 0;

free_sas_port:
	pqi_free_sas_port(pqi_sas_port);
	device->sas_port = NULL;

	return rc;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 119 100.00% 1 100.00%
Total 119 100.00% 1 100.00%



void pqi_remove_sas_device(struct pqi_scsi_dev *device)
{
	if (device->sas_port) {
		pqi_free_sas_port(device->sas_port);
		device->sas_port = NULL;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static int pqi_sas_get_linkerrors(struct sas_phy *phy)
{
	return 0;
}

Contributors
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Kevin Barnett 14 100.00% 1 100.00%
Total 14 100.00% 1 100.00%



static int pqi_sas_get_enclosure_identifier(struct sas_rphy *rphy,
	u64 *identifier)
{
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



static int pqi_sas_get_bay_identifier(struct sas_rphy *rphy)
{
	return -ENXIO;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 15 100.00% 1 100.00%
Total 15 100.00% 1 100.00%



static int pqi_sas_phy_reset(struct sas_phy *phy, int hard_reset)
{
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 17 100.00% 1 100.00%
Total 17 100.00% 1 100.00%



static int pqi_sas_phy_enable(struct sas_phy *phy, int enable)
{
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 17 100.00% 1 100.00%
Total 17 100.00% 1 100.00%



static int pqi_sas_phy_setup(struct sas_phy *phy)
{
	return 0;
}

Contributors
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Kevin Barnett 14 100.00% 1 100.00%
Total 14 100.00% 1 100.00%



static void pqi_sas_phy_release(struct sas_phy *phy)
{
}

Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 10 100.00% 1 100.00%
Total 10 100.00% 1 100.00%



static int pqi_sas_phy_speed(struct sas_phy *phy,
	struct sas_phy_linkrates *rates)
{
	return -EINVAL;
}

Contributors
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Kevin Barnett 20 100.00% 1 100.00%
Total 20 100.00% 1 100.00%

/* SMP = Serial Management Protocol */



static int pqi_sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
	struct request *req)
{
	return -EINVAL;
}

Contributors
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Kevin Barnett 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%


struct sas_function_template pqi_sas_transport_functions = {
	.get_linkerrors = pqi_sas_get_linkerrors,
	.get_enclosure_identifier = pqi_sas_get_enclosure_identifier,
	.get_bay_identifier = pqi_sas_get_bay_identifier,
	.phy_reset = pqi_sas_phy_reset,
	.phy_enable = pqi_sas_phy_enable,
	.phy_setup = pqi_sas_phy_setup,
	.phy_release = pqi_sas_phy_release,
	.set_phy_speed = pqi_sas_phy_speed,
	.smp_handler = pqi_sas_smp_handler,
};
Overall Contributors
Person Tokens Prop Commits CommitProp
Kevin Barnett 1263 100.00% 1 100.00%
Total 1263 100.00% 1 100.00%
Directory: drivers/scsi/smartpqi

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
Kevin Barnett	94	100.00%	1	100.00%
Total	94	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.11 drivers/scsi/smartpqi/smartpqi_sas_transport.c

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