[deliverable/linux.git] / drivers / scsi / libsas / sas_port.c

/*
 * Serial Attached SCSI (SAS) Port class
 *
 * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
 *
 * This file is licensed under GPLv2.
 *
 * 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; either version 2 of the
 * License, or (at your option) any later version.
 *
 * 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.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#include "sas_internal.h"

#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_sas.h>
#include "../scsi_sas_internal.h"

static bool phy_is_wideport_member(struct asd_sas_port *port, struct asd_sas_phy *phy)
{
	struct sas_ha_struct *sas_ha = phy->ha;

	if (memcmp(port->attached_sas_addr, phy->attached_sas_addr,
		   SAS_ADDR_SIZE) != 0 || (sas_ha->strict_wide_ports &&
	     memcmp(port->sas_addr, phy->sas_addr, SAS_ADDR_SIZE) != 0))
		return false;
	return true;
}

static void sas_resume_port(struct asd_sas_phy *phy)
{
	struct domain_device *dev;
	struct asd_sas_port *port = phy->port;
	struct sas_ha_struct *sas_ha = phy->ha;
	struct sas_internal *si = to_sas_internal(sas_ha->core.shost->transportt);

	if (si->dft->lldd_port_formed)
		si->dft->lldd_port_formed(phy);

	if (port->suspended)
		port->suspended = 0;
	else {
		/* we only need to handle "link returned" actions once */
		return;
	}

	/* if the port came back:
	 * 1/ presume every device came back
	 * 2/ force the next revalidation to check all expander phys
	 */
	list_for_each_entry(dev, &port->dev_list, dev_list_node) {
		int i, rc;

		rc = sas_notify_lldd_dev_found(dev);
		if (rc) {
			sas_unregister_dev(port, dev);
			continue;
		}

		if (dev->dev_type == SAS_EDGE_EXPANDER_DEVICE || dev->dev_type == SAS_FANOUT_EXPANDER_DEVICE) {
			dev->ex_dev.ex_change_count = -1;
			for (i = 0; i < dev->ex_dev.num_phys; i++) {
				struct ex_phy *phy = &dev->ex_dev.ex_phy[i];

				phy->phy_change_count = -1;
			}
		}
	}

	sas_discover_event(port, DISCE_RESUME);
}

/**
 * sas_form_port -- add this phy to a port
 * @phy: the phy of interest
 *
 * This function adds this phy to an existing port, thus creating a wide
 * port, or it creates a port and adds the phy to the port.
 */
static void sas_form_port(struct asd_sas_phy *phy)
{
	int i;
	struct sas_ha_struct *sas_ha = phy->ha;
	struct asd_sas_port *port = phy->port;
	struct sas_internal *si =
		to_sas_internal(sas_ha->core.shost->transportt);
	unsigned long flags;

	if (port) {
		if (!phy_is_wideport_member(port, phy))
			sas_deform_port(phy, 0);
		else if (phy->suspended) {
			phy->suspended = 0;
			sas_resume_port(phy);

			/* phy came back, try to cancel the timeout */
			wake_up(&sas_ha->eh_wait_q);
			return;
		} else {
			SAS_DPRINTK("%s: phy%d belongs to port%d already(%d)!\n",
				    __func__, phy->id, phy->port->id,
				    phy->port->num_phys);
			return;
		}
	}

	/* see if the phy should be part of a wide port */
	spin_lock_irqsave(&sas_ha->phy_port_lock, flags);
	for (i = 0; i < sas_ha->num_phys; i++) {
		port = sas_ha->sas_port[i];
		spin_lock(&port->phy_list_lock);
		if (*(u64 *) port->sas_addr &&
		    phy_is_wideport_member(port, phy) && port->num_phys > 0) {
			/* wide port */
			SAS_DPRINTK("phy%d matched wide port%d\n", phy->id,
				    port->id);
			break;
		}
		spin_unlock(&port->phy_list_lock);
	}
	/* The phy does not match any existing port, create a new one */
	if (i == sas_ha->num_phys) {
		for (i = 0; i < sas_ha->num_phys; i++) {
			port = sas_ha->sas_port[i];
			spin_lock(&port->phy_list_lock);
			if (*(u64 *)port->sas_addr == 0
				&& port->num_phys == 0) {
				memcpy(port->sas_addr, phy->sas_addr,
					SAS_ADDR_SIZE);
				break;
			}
			spin_unlock(&port->phy_list_lock);
		}
	}

	if (i >= sas_ha->num_phys) {
		printk(KERN_NOTICE "%s: couldn't find a free port, bug?\n",
		       __func__);
		spin_unlock_irqrestore(&sas_ha->phy_port_lock, flags);
		return;
	}

	/* add the phy to the port */
	list_add_tail(&phy->port_phy_el, &port->phy_list);
	sas_phy_set_target(phy, port->port_dev);
	phy->port = port;
	port->num_phys++;
	port->phy_mask |= (1U << phy->id);

	if (*(u64 *)port->attached_sas_addr == 0) {
		port->class = phy->class;
		memcpy(port->attached_sas_addr, phy->attached_sas_addr,
		       SAS_ADDR_SIZE);
		port->iproto = phy->iproto;
		port->tproto = phy->tproto;
		port->oob_mode = phy->oob_mode;
		port->linkrate = phy->linkrate;
	} else
		port->linkrate = max(port->linkrate, phy->linkrate);
	spin_unlock(&port->phy_list_lock);
	spin_unlock_irqrestore(&sas_ha->phy_port_lock, flags);

	if (!port->port) {
		port->port = sas_port_alloc(phy->phy->dev.parent, port->id);
		BUG_ON(!port->port);
		sas_port_add(port->port);
	}
	sas_port_add_phy(port->port, phy->phy);

	SAS_DPRINTK("%s added to %s, phy_mask:0x%x (%16llx)\n",
		    dev_name(&phy->phy->dev), dev_name(&port->port->dev),
		    port->phy_mask,
		    SAS_ADDR(port->attached_sas_addr));

	if (port->port_dev)
		port->port_dev->pathways = port->num_phys;

	/* Tell the LLDD about this port formation. */
	if (si->dft->lldd_port_formed)
		si->dft->lldd_port_formed(phy);

	sas_discover_event(phy->port, DISCE_DISCOVER_DOMAIN);
}

/**
 * sas_deform_port -- remove this phy from the port it belongs to
 * @phy: the phy of interest
 *
 * This is called when the physical link to the other phy has been
 * lost (on this phy), in Event thread context. We cannot delay here.
 */
void sas_deform_port(struct asd_sas_phy *phy, int gone)
{
	struct sas_ha_struct *sas_ha = phy->ha;
	struct asd_sas_port *port = phy->port;
	struct sas_internal *si =
		to_sas_internal(sas_ha->core.shost->transportt);
	struct domain_device *dev;
	unsigned long flags;

	if (!port)
		return;		  /* done by a phy event */

	dev = port->port_dev;
	if (dev)
		dev->pathways--;

	if (port->num_phys == 1) {
		sas_unregister_domain_devices(port, gone);
		sas_port_delete(port->port);
		port->port = NULL;
	} else {
		sas_port_delete_phy(port->port, phy->phy);
		sas_device_set_phy(dev, port->port);
	}

	if (si->dft->lldd_port_deformed)
		si->dft->lldd_port_deformed(phy);

	spin_lock_irqsave(&sas_ha->phy_port_lock, flags);
	spin_lock(&port->phy_list_lock);

	list_del_init(&phy->port_phy_el);
	sas_phy_set_target(phy, NULL);
	phy->port = NULL;
	port->num_phys--;
	port->phy_mask &= ~(1U << phy->id);

	if (port->num_phys == 0) {
		INIT_LIST_HEAD(&port->phy_list);
		memset(port->sas_addr, 0, SAS_ADDR_SIZE);
		memset(port->attached_sas_addr, 0, SAS_ADDR_SIZE);
		port->class = 0;
		port->iproto = 0;
		port->tproto = 0;
		port->oob_mode = 0;
		port->phy_mask = 0;
	}
	spin_unlock(&port->phy_list_lock);
	spin_unlock_irqrestore(&sas_ha->phy_port_lock, flags);

	return;
}

/* ---------- SAS port events ---------- */

void sas_porte_bytes_dmaed(struct work_struct *work)
{
	struct asd_sas_event *ev = to_asd_sas_event(work);
	struct asd_sas_phy *phy = ev->phy;

	clear_bit(PORTE_BYTES_DMAED, &phy->port_events_pending);

	sas_form_port(phy);
}

void sas_porte_broadcast_rcvd(struct work_struct *work)
{
	struct asd_sas_event *ev = to_asd_sas_event(work);
	struct asd_sas_phy *phy = ev->phy;
	unsigned long flags;
	u32 prim;

	clear_bit(PORTE_BROADCAST_RCVD, &phy->port_events_pending);

	spin_lock_irqsave(&phy->sas_prim_lock, flags);
	prim = phy->sas_prim;
	spin_unlock_irqrestore(&phy->sas_prim_lock, flags);

	SAS_DPRINTK("broadcast received: %d\n", prim);
	sas_discover_event(phy->port, DISCE_REVALIDATE_DOMAIN);
}

void sas_porte_link_reset_err(struct work_struct *work)
{
	struct asd_sas_event *ev = to_asd_sas_event(work);
	struct asd_sas_phy *phy = ev->phy;

	clear_bit(PORTE_LINK_RESET_ERR, &phy->port_events_pending);

	sas_deform_port(phy, 1);
}

void sas_porte_timer_event(struct work_struct *work)
{
	struct asd_sas_event *ev = to_asd_sas_event(work);
	struct asd_sas_phy *phy = ev->phy;

	clear_bit(PORTE_TIMER_EVENT, &phy->port_events_pending);

	sas_deform_port(phy, 1);
}

void sas_porte_hard_reset(struct work_struct *work)
{
	struct asd_sas_event *ev = to_asd_sas_event(work);
	struct asd_sas_phy *phy = ev->phy;

	clear_bit(PORTE_HARD_RESET, &phy->port_events_pending);

	sas_deform_port(phy, 1);
}

/* ---------- SAS port registration ---------- */

static void sas_init_port(struct asd_sas_port *port,
			  struct sas_ha_struct *sas_ha, int i)
{
	memset(port, 0, sizeof(*port));
	port->id = i;
	INIT_LIST_HEAD(&port->dev_list);
	INIT_LIST_HEAD(&port->disco_list);
	INIT_LIST_HEAD(&port->destroy_list);
	spin_lock_init(&port->phy_list_lock);
	INIT_LIST_HEAD(&port->phy_list);
	port->ha = sas_ha;

	spin_lock_init(&port->dev_list_lock);
}

int sas_register_ports(struct sas_ha_struct *sas_ha)
{
	int i;

	/* initialize the ports and discovery */
	for (i = 0; i < sas_ha->num_phys; i++) {
		struct asd_sas_port *port = sas_ha->sas_port[i];

		sas_init_port(port, sas_ha, i);
		sas_init_disc(&port->disc, port);
	}
	return 0;
}

void sas_unregister_ports(struct sas_ha_struct *sas_ha)
{
	int i;

	for (i = 0; i < sas_ha->num_phys; i++)
		if (sas_ha->sas_phy[i]->port)
			sas_deform_port(sas_ha->sas_phy[i], 0);

}
Commit	Line	Data
2908d778 JB	1	/*
	2	* Serial Attached SCSI (SAS) Port class
	3	*
	4	* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
	5	* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
	6	*
	7	* This file is licensed under GPLv2.
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License as
	11	* published by the Free Software Foundation; either version 2 of the
	12	* License, or (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful, but
	15	* WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	22	*
	23	*/
	24
	25	#include "sas_internal.h"
	26
	27	#include <scsi/scsi_transport.h>
	28	#include <scsi/scsi_transport_sas.h>
	29	#include "../scsi_sas_internal.h"
	30
00f0254e DW	31	static bool phy_is_wideport_member(struct asd_sas_port port, struct asd_sas_phy phy)
	32	{
	33	struct sas_ha_struct *sas_ha = phy->ha;
	34
	35	if (memcmp(port->attached_sas_addr, phy->attached_sas_addr,
	36	SAS_ADDR_SIZE) != 0 \|\| (sas_ha->strict_wide_ports &&
	37	memcmp(port->sas_addr, phy->sas_addr, SAS_ADDR_SIZE) != 0))
	38	return false;
	39	return true;
	40	}
	41
303694ee DW	42	static void sas_resume_port(struct asd_sas_phy *phy)
	43	{
	44	struct domain_device *dev;
	45	struct asd_sas_port *port = phy->port;
	46	struct sas_ha_struct *sas_ha = phy->ha;
	47	struct sas_internal *si = to_sas_internal(sas_ha->core.shost->transportt);
	48
	49	if (si->dft->lldd_port_formed)
	50	si->dft->lldd_port_formed(phy);
	51
	52	if (port->suspended)
	53	port->suspended = 0;
	54	else {
	55	/* we only need to handle "link returned" actions once */
	56	return;
	57	}
	58
	59	/* if the port came back:
	60	* 1/ presume every device came back
	61	* 2/ force the next revalidation to check all expander phys
	62	*/
	63	list_for_each_entry(dev, &port->dev_list, dev_list_node) {
	64	int i, rc;
	65
	66	rc = sas_notify_lldd_dev_found(dev);
	67	if (rc) {
	68	sas_unregister_dev(port, dev);
	69	continue;
	70	}
	71
aa9f8328	72	if (dev->dev_type == SAS_EDGE_EXPANDER_DEVICE \|\| dev->dev_type == SAS_FANOUT_EXPANDER_DEVICE) {
303694ee DW	73	dev->ex_dev.ex_change_count = -1;
	74	for (i = 0; i < dev->ex_dev.num_phys; i++) {
	75	struct ex_phy *phy = &dev->ex_dev.ex_phy[i];
	76
	77	phy->phy_change_count = -1;
	78	}
	79	}
	80	}
	81
	82	sas_discover_event(port, DISCE_RESUME);
	83	}
	84
2908d778 JB	85	/**
	86	* sas_form_port -- add this phy to a port
	87	* @phy: the phy of interest
	88	*
	89	* This function adds this phy to an existing port, thus creating a wide
	90	* port, or it creates a port and adds the phy to the port.
	91	*/
	92	static void sas_form_port(struct asd_sas_phy *phy)
	93	{
	94	int i;
	95	struct sas_ha_struct *sas_ha = phy->ha;
	96	struct asd_sas_port *port = phy->port;
	97	struct sas_internal *si =
	98	to_sas_internal(sas_ha->core.shost->transportt);
980fa2f9	99	unsigned long flags;
2908d778 JB	100
2908d778 JB	101	if (port) {
00f0254e	102	if (!phy_is_wideport_member(port, phy))
90f1e10d	103	sas_deform_port(phy, 0);
303694ee DW	104	else if (phy->suspended) {
	105	phy->suspended = 0;
	106	sas_resume_port(phy);
	107
	108	/* phy came back, try to cancel the timeout */
	109	wake_up(&sas_ha->eh_wait_q);
	110	return;
	111	} else {
2908d778	112	SAS_DPRINTK("%s: phy%d belongs to port%d already(%d)!\n",
cadbd4a5	113	__func__, phy->id, phy->port->id,
2908d778 JB	114	phy->port->num_phys);
	115	return;
	116	}
	117	}
	118
5381837f	119	/* see if the phy should be part of a wide port */
980fa2f9	120	spin_lock_irqsave(&sas_ha->phy_port_lock, flags);
2908d778 JB	121	for (i = 0; i < sas_ha->num_phys; i++) {
	122	port = sas_ha->sas_port[i];
	123	spin_lock(&port->phy_list_lock);
	124	if ((u64 ) port->sas_addr &&
00f0254e	125	phy_is_wideport_member(port, phy) && port->num_phys > 0) {
2908d778 JB	126	/* wide port */
	127	SAS_DPRINTK("phy%d matched wide port%d\n", phy->id,
	128	port->id);
	129	break;
2908d778 JB	130	}
	131	spin_unlock(&port->phy_list_lock);
	132	}
5381837f TP	133	/* The phy does not match any existing port, create a new one */
	134	if (i == sas_ha->num_phys) {
	135	for (i = 0; i < sas_ha->num_phys; i++) {
	136	port = sas_ha->sas_port[i];
	137	spin_lock(&port->phy_list_lock);
	138	if ((u64 )port->sas_addr == 0
	139	&& port->num_phys == 0) {
	140	memcpy(port->sas_addr, phy->sas_addr,
	141	SAS_ADDR_SIZE);
	142	break;
	143	}
	144	spin_unlock(&port->phy_list_lock);
	145	}
	146	}
2908d778 JB	147
	148	if (i >= sas_ha->num_phys) {
	149	printk(KERN_NOTICE "%s: couldn't find a free port, bug?\n",
cadbd4a5	150	__func__);
980fa2f9	151	spin_unlock_irqrestore(&sas_ha->phy_port_lock, flags);
2908d778 JB	152	return;
	153	}
	154
	155	/* add the phy to the port */
	156	list_add_tail(&phy->port_phy_el, &port->phy_list);
899fcf40	157	sas_phy_set_target(phy, port->port_dev);
2908d778 JB	158	phy->port = port;
	159	port->num_phys++;
	160	port->phy_mask \|= (1U << phy->id);
	161
2908d778 JB	162	if ((u64 )port->attached_sas_addr == 0) {
	163	port->class = phy->class;
	164	memcpy(port->attached_sas_addr, phy->attached_sas_addr,
	165	SAS_ADDR_SIZE);
	166	port->iproto = phy->iproto;
	167	port->tproto = phy->tproto;
	168	port->oob_mode = phy->oob_mode;
	169	port->linkrate = phy->linkrate;
	170	} else
	171	port->linkrate = max(port->linkrate, phy->linkrate);
	172	spin_unlock(&port->phy_list_lock);
980fa2f9	173	spin_unlock_irqrestore(&sas_ha->phy_port_lock, flags);
2908d778 JB	174
2908d778 JB	175	if (!port->port) {
b4698d88	176	port->port = sas_port_alloc(phy->phy->dev.parent, port->id);
2908d778 JB	177	BUG_ON(!port->port);
	178	sas_port_add(port->port);
	179	}
	180	sas_port_add_phy(port->port, phy->phy);
	181
a29c0515	182	SAS_DPRINTK("%s added to %s, phy_mask:0x%x (%16llx)\n",
71610f55	183	dev_name(&phy->phy->dev), dev_name(&port->port->dev),
a29c0515 JB	184	port->phy_mask,
	185	SAS_ADDR(port->attached_sas_addr));
	186
2908d778 JB	187	if (port->port_dev)
	188	port->port_dev->pathways = port->num_phys;
	189
	190	/* Tell the LLDD about this port formation. */
	191	if (si->dft->lldd_port_formed)
	192	si->dft->lldd_port_formed(phy);
	193
	194	sas_discover_event(phy->port, DISCE_DISCOVER_DOMAIN);
	195	}
	196
	197	/**
	198	* sas_deform_port -- remove this phy from the port it belongs to
	199	* @phy: the phy of interest
	200	*
	201	* This is called when the physical link to the other phy has been
	202	* lost (on this phy), in Event thread context. We cannot delay here.
	203	*/
90f1e10d	204	void sas_deform_port(struct asd_sas_phy *phy, int gone)
2908d778 JB	205	{
	206	struct sas_ha_struct *sas_ha = phy->ha;
	207	struct asd_sas_port *port = phy->port;
	208	struct sas_internal *si =
	209	to_sas_internal(sas_ha->core.shost->transportt);
90f1e10d	210	struct domain_device *dev;
980fa2f9	211	unsigned long flags;
2908d778 JB	212
	213	if (!port)
	214	return; /* done by a phy event */
	215
90f1e10d DW	216	dev = port->port_dev;
	217	if (dev)
	218	dev->pathways--;
2908d778 JB	219
2908d778 JB	220	if (port->num_phys == 1) {
7d05919a	221	sas_unregister_domain_devices(port, gone);
2908d778 JB	222	sas_port_delete(port->port);
2908d778 JB	223	port->port = NULL;
f41a0c44	224	} else {
2908d778	225	sas_port_delete_phy(port->port, phy->phy);
f41a0c44 DW	226	sas_device_set_phy(dev, port->port);
f41a0c44 DW	227	}
2908d778	228
2908d778 JB	229	if (si->dft->lldd_port_deformed)
	230	si->dft->lldd_port_deformed(phy);
	231
980fa2f9	232	spin_lock_irqsave(&sas_ha->phy_port_lock, flags);
2908d778 JB	233	spin_lock(&port->phy_list_lock);
	234
	235	list_del_init(&phy->port_phy_el);
899fcf40	236	sas_phy_set_target(phy, NULL);
2908d778 JB	237	phy->port = NULL;
	238	port->num_phys--;
	239	port->phy_mask &= ~(1U << phy->id);
	240
	241	if (port->num_phys == 0) {
	242	INIT_LIST_HEAD(&port->phy_list);
	243	memset(port->sas_addr, 0, SAS_ADDR_SIZE);
	244	memset(port->attached_sas_addr, 0, SAS_ADDR_SIZE);
	245	port->class = 0;
	246	port->iproto = 0;
	247	port->tproto = 0;
	248	port->oob_mode = 0;
	249	port->phy_mask = 0;
	250	}
	251	spin_unlock(&port->phy_list_lock);
980fa2f9	252	spin_unlock_irqrestore(&sas_ha->phy_port_lock, flags);
2908d778 JB	253
	254	return;
	255	}
	256
	257	/* ---------- SAS port events ---------- */
	258
c4028958	259	void sas_porte_bytes_dmaed(struct work_struct *work)
2908d778	260	{
22b9153f	261	struct asd_sas_event *ev = to_asd_sas_event(work);
c4028958	262	struct asd_sas_phy *phy = ev->phy;
2908d778	263
b15ebe0b	264	clear_bit(PORTE_BYTES_DMAED, &phy->port_events_pending);
2908d778 JB	265
	266	sas_form_port(phy);
	267	}
	268
c4028958	269	void sas_porte_broadcast_rcvd(struct work_struct *work)
2908d778	270	{
22b9153f	271	struct asd_sas_event *ev = to_asd_sas_event(work);
c4028958	272	struct asd_sas_phy *phy = ev->phy;
2908d778 JB	273	unsigned long flags;
2908d778 JB	274	u32 prim;
2908d778	275
b15ebe0b	276	clear_bit(PORTE_BROADCAST_RCVD, &phy->port_events_pending);
2908d778 JB	277
	278	spin_lock_irqsave(&phy->sas_prim_lock, flags);
	279	prim = phy->sas_prim;
	280	spin_unlock_irqrestore(&phy->sas_prim_lock, flags);
	281
	282	SAS_DPRINTK("broadcast received: %d\n", prim);
	283	sas_discover_event(phy->port, DISCE_REVALIDATE_DOMAIN);
	284	}
	285
c4028958	286	void sas_porte_link_reset_err(struct work_struct *work)
2908d778	287	{
22b9153f	288	struct asd_sas_event *ev = to_asd_sas_event(work);
c4028958	289	struct asd_sas_phy *phy = ev->phy;
2908d778	290
b15ebe0b	291	clear_bit(PORTE_LINK_RESET_ERR, &phy->port_events_pending);
2908d778	292
90f1e10d	293	sas_deform_port(phy, 1);
2908d778 JB	294	}
2908d778 JB	295
c4028958	296	void sas_porte_timer_event(struct work_struct *work)
2908d778	297	{
22b9153f	298	struct asd_sas_event *ev = to_asd_sas_event(work);
c4028958	299	struct asd_sas_phy *phy = ev->phy;
2908d778	300
b15ebe0b	301	clear_bit(PORTE_TIMER_EVENT, &phy->port_events_pending);
2908d778	302
90f1e10d	303	sas_deform_port(phy, 1);
2908d778 JB	304	}
2908d778 JB	305
c4028958	306	void sas_porte_hard_reset(struct work_struct *work)
2908d778	307	{
22b9153f	308	struct asd_sas_event *ev = to_asd_sas_event(work);
c4028958	309	struct asd_sas_phy *phy = ev->phy;
2908d778	310
b15ebe0b	311	clear_bit(PORTE_HARD_RESET, &phy->port_events_pending);
2908d778	312
90f1e10d	313	sas_deform_port(phy, 1);
2908d778 JB	314	}
	315
	316	/* ---------- SAS port registration ---------- */
	317
	318	static void sas_init_port(struct asd_sas_port *port,
	319	struct sas_ha_struct *sas_ha, int i)
	320	{
a29c0515	321	memset(port, 0, sizeof(*port));
2908d778 JB	322	port->id = i;
2908d778 JB	323	INIT_LIST_HEAD(&port->dev_list);
87c8331f DW	324	INIT_LIST_HEAD(&port->disco_list);
87c8331f DW	325	INIT_LIST_HEAD(&port->destroy_list);
2908d778 JB	326	spin_lock_init(&port->phy_list_lock);
2908d778 JB	327	INIT_LIST_HEAD(&port->phy_list);
2908d778 JB	328	port->ha = sas_ha;
	329
	330	spin_lock_init(&port->dev_list_lock);
	331	}
	332
	333	int sas_register_ports(struct sas_ha_struct *sas_ha)
	334	{
	335	int i;
	336
	337	/* initialize the ports and discovery */
	338	for (i = 0; i < sas_ha->num_phys; i++) {
	339	struct asd_sas_port *port = sas_ha->sas_port[i];
	340
	341	sas_init_port(port, sas_ha, i);
	342	sas_init_disc(&port->disc, port);
	343	}
	344	return 0;
	345	}
	346
	347	void sas_unregister_ports(struct sas_ha_struct *sas_ha)
	348	{
	349	int i;
	350
	351	for (i = 0; i < sas_ha->num_phys; i++)
	352	if (sas_ha->sas_phy[i]->port)
90f1e10d	353	sas_deform_port(sas_ha->sas_phy[i], 0);
2908d778 JB	354
2908d778 JB	355	}