[linux-2.6-block.git] / drivers / scsi / aic94xx / aic94xx_dev.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Aic94xx SAS/SATA DDB management
 *
 * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
 *
 * $Id: //depot/aic94xx/aic94xx_dev.c#21 $
 */

#include "aic94xx.h"
#include "aic94xx_hwi.h"
#include "aic94xx_reg.h"
#include "aic94xx_sas.h"

#define FIND_FREE_DDB(_ha) find_first_zero_bit((_ha)->hw_prof.ddb_bitmap, \
					       (_ha)->hw_prof.max_ddbs)
#define SET_DDB(_ddb, _ha) set_bit(_ddb, (_ha)->hw_prof.ddb_bitmap)
#define CLEAR_DDB(_ddb, _ha) clear_bit(_ddb, (_ha)->hw_prof.ddb_bitmap)

static int asd_get_ddb(struct asd_ha_struct *asd_ha)
{
	int ddb, i;

	ddb = FIND_FREE_DDB(asd_ha);
	if (ddb >= asd_ha->hw_prof.max_ddbs) {
		ddb = -ENOMEM;
		goto out;
	}
	SET_DDB(ddb, asd_ha);

	for (i = 0; i < sizeof(struct asd_ddb_ssp_smp_target_port); i+= 4)
		asd_ddbsite_write_dword(asd_ha, ddb, i, 0);
out:
	return ddb;
}

#define INIT_CONN_TAG   offsetof(struct asd_ddb_ssp_smp_target_port, init_conn_tag)
#define DEST_SAS_ADDR   offsetof(struct asd_ddb_ssp_smp_target_port, dest_sas_addr)
#define SEND_QUEUE_HEAD offsetof(struct asd_ddb_ssp_smp_target_port, send_queue_head)
#define DDB_TYPE        offsetof(struct asd_ddb_ssp_smp_target_port, ddb_type)
#define CONN_MASK       offsetof(struct asd_ddb_ssp_smp_target_port, conn_mask)
#define DDB_TARG_FLAGS  offsetof(struct asd_ddb_ssp_smp_target_port, flags)
#define DDB_TARG_FLAGS2 offsetof(struct asd_ddb_stp_sata_target_port, flags2)
#define EXEC_QUEUE_TAIL offsetof(struct asd_ddb_ssp_smp_target_port, exec_queue_tail)
#define SEND_QUEUE_TAIL offsetof(struct asd_ddb_ssp_smp_target_port, send_queue_tail)
#define SISTER_DDB      offsetof(struct asd_ddb_ssp_smp_target_port, sister_ddb)
#define MAX_CCONN       offsetof(struct asd_ddb_ssp_smp_target_port, max_concurrent_conn)
#define NUM_CTX         offsetof(struct asd_ddb_ssp_smp_target_port, num_contexts)
#define ATA_CMD_SCBPTR  offsetof(struct asd_ddb_stp_sata_target_port, ata_cmd_scbptr)
#define SATA_TAG_ALLOC_MASK offsetof(struct asd_ddb_stp_sata_target_port, sata_tag_alloc_mask)
#define NUM_SATA_TAGS   offsetof(struct asd_ddb_stp_sata_target_port, num_sata_tags)
#define SATA_STATUS     offsetof(struct asd_ddb_stp_sata_target_port, sata_status)
#define NCQ_DATA_SCB_PTR offsetof(struct asd_ddb_stp_sata_target_port, ncq_data_scb_ptr)
#define ITNL_TIMEOUT    offsetof(struct asd_ddb_ssp_smp_target_port, itnl_timeout)

static void asd_free_ddb(struct asd_ha_struct *asd_ha, int ddb)
{
	if (!ddb || ddb >= 0xFFFF)
		return;
	asd_ddbsite_write_byte(asd_ha, ddb, DDB_TYPE, DDB_TYPE_UNUSED);
	CLEAR_DDB(ddb, asd_ha);
}

static void asd_set_ddb_type(struct domain_device *dev)
{
	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	int ddb = (int) (unsigned long) dev->lldd_dev;

	if (dev->dev_type == SAS_SATA_PM_PORT)
		asd_ddbsite_write_byte(asd_ha,ddb, DDB_TYPE, DDB_TYPE_PM_PORT);
	else if (dev->tproto)
		asd_ddbsite_write_byte(asd_ha,ddb, DDB_TYPE, DDB_TYPE_TARGET);
	else
		asd_ddbsite_write_byte(asd_ha,ddb,DDB_TYPE,DDB_TYPE_INITIATOR);
}

static int asd_init_sata_tag_ddb(struct domain_device *dev)
{
	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	int ddb, i;

	ddb = asd_get_ddb(asd_ha);
	if (ddb < 0)
		return ddb;

	for (i = 0; i < sizeof(struct asd_ddb_sata_tag); i += 2)
		asd_ddbsite_write_word(asd_ha, ddb, i, 0xFFFF);

	asd_ddbsite_write_word(asd_ha, (int) (unsigned long) dev->lldd_dev,
			       SISTER_DDB, ddb);
	return 0;
}

void asd_set_dmamode(struct domain_device *dev)
{
	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	struct ata_device *ata_dev = sas_to_ata_dev(dev);
	int ddb = (int) (unsigned long) dev->lldd_dev;
	u32 qdepth = 0;

	if (dev->dev_type == SAS_SATA_DEV || dev->dev_type == SAS_SATA_PM_PORT) {
		if (ata_id_has_ncq(ata_dev->id))
			qdepth = ata_id_queue_depth(ata_dev->id);
		asd_ddbsite_write_dword(asd_ha, ddb, SATA_TAG_ALLOC_MASK,
					(1ULL<<qdepth)-1);
		asd_ddbsite_write_byte(asd_ha, ddb, NUM_SATA_TAGS, qdepth);
	}

	if (qdepth > 0)
		if (asd_init_sata_tag_ddb(dev) != 0) {
			unsigned long flags;

			spin_lock_irqsave(dev->sata_dev.ap->lock, flags);
			ata_dev->flags |= ATA_DFLAG_NCQ_OFF;
			spin_unlock_irqrestore(dev->sata_dev.ap->lock, flags);
		}
}

static int asd_init_sata(struct domain_device *dev)
{
	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	int ddb = (int) (unsigned long) dev->lldd_dev;

	asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF);
	if (dev->dev_type == SAS_SATA_DEV || dev->dev_type == SAS_SATA_PM ||
	    dev->dev_type == SAS_SATA_PM_PORT) {
		struct dev_to_host_fis *fis = (struct dev_to_host_fis *)
			dev->frame_rcvd;
		asd_ddbsite_write_byte(asd_ha, ddb, SATA_STATUS, fis->status);
	}
	asd_ddbsite_write_word(asd_ha, ddb, NCQ_DATA_SCB_PTR, 0xFFFF);

	return 0;
}

static int asd_init_target_ddb(struct domain_device *dev)
{
	int ddb, i;
	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	u8 flags = 0;

	ddb = asd_get_ddb(asd_ha);
	if (ddb < 0)
		return ddb;

	dev->lldd_dev = (void *) (unsigned long) ddb;

	asd_ddbsite_write_byte(asd_ha, ddb, 0, DDB_TP_CONN_TYPE);
	asd_ddbsite_write_byte(asd_ha, ddb, 1, 0);
	asd_ddbsite_write_word(asd_ha, ddb, INIT_CONN_TAG, 0xFFFF);
	for (i = 0; i < SAS_ADDR_SIZE; i++)
		asd_ddbsite_write_byte(asd_ha, ddb, DEST_SAS_ADDR+i,
				       dev->sas_addr[i]);
	asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_HEAD, 0xFFFF);
	asd_set_ddb_type(dev);
	asd_ddbsite_write_byte(asd_ha, ddb, CONN_MASK, dev->port->phy_mask);
	if (dev->port->oob_mode != SATA_OOB_MODE) {
		flags |= OPEN_REQUIRED;
		if ((dev->dev_type == SAS_SATA_DEV) ||
		    (dev->tproto & SAS_PROTOCOL_STP)) {
			struct smp_resp *rps_resp = &dev->sata_dev.rps_resp;
			if (rps_resp->frame_type == SMP_RESPONSE &&
			    rps_resp->function == SMP_REPORT_PHY_SATA &&
			    rps_resp->result == SMP_RESP_FUNC_ACC) {
				if (rps_resp->rps.affil_valid)
					flags |= STP_AFFIL_POL;
				if (rps_resp->rps.affil_supp)
					flags |= SUPPORTS_AFFIL;
			}
		} else {
			flags |= CONCURRENT_CONN_SUPP;
			if (!dev->parent && dev_is_expander(dev->dev_type))
				asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN,
						       4);
			else
				asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN,
						       dev->pathways);
			asd_ddbsite_write_byte(asd_ha, ddb, NUM_CTX, 1);
		}
	}
	if (dev->dev_type == SAS_SATA_PM)
		flags |= SATA_MULTIPORT;
	asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS, flags);

	flags = 0;
	if (dev->tproto & SAS_PROTOCOL_STP)
		flags |= STP_CL_POL_NO_TX;
	asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS2, flags);

	asd_ddbsite_write_word(asd_ha, ddb, EXEC_QUEUE_TAIL, 0xFFFF);
	asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_TAIL, 0xFFFF);
	asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF);

	if (dev->dev_type == SAS_SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
		i = asd_init_sata(dev);
		if (i < 0) {
			asd_free_ddb(asd_ha, ddb);
			return i;
		}
	}

	if (dev->dev_type == SAS_END_DEVICE) {
		struct sas_end_device *rdev = rphy_to_end_device(dev->rphy);
		if (rdev->I_T_nexus_loss_timeout > 0)
			asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT,
					       min(rdev->I_T_nexus_loss_timeout,
						   (u16)ITNL_TIMEOUT_CONST));
		else
			asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT,
					       (u16)ITNL_TIMEOUT_CONST);
	}
	return 0;
}

static int asd_init_sata_pm_table_ddb(struct domain_device *dev)
{
	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	int ddb, i;

	ddb = asd_get_ddb(asd_ha);
	if (ddb < 0)
		return ddb;

	for (i = 0; i < 32; i += 2)
		asd_ddbsite_write_word(asd_ha, ddb, i, 0xFFFF);

	asd_ddbsite_write_word(asd_ha, (int) (unsigned long) dev->lldd_dev,
			       SISTER_DDB, ddb);

	return 0;
}

#define PM_PORT_FLAGS offsetof(struct asd_ddb_sata_pm_port, pm_port_flags)
#define PARENT_DDB    offsetof(struct asd_ddb_sata_pm_port, parent_ddb)

/**
 * asd_init_sata_pm_port_ddb -- SATA Port Multiplier Port
 * dev: pointer to domain device
 *
 * For SATA Port Multiplier Ports we need to allocate one SATA Port
 * Multiplier Port DDB and depending on whether the target on it
 * supports SATA II NCQ, one SATA Tag DDB.
 */
static int asd_init_sata_pm_port_ddb(struct domain_device *dev)
{
	int ddb, i, parent_ddb, pmtable_ddb;
	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	u8  flags;

	ddb = asd_get_ddb(asd_ha);
	if (ddb < 0)
		return ddb;

	asd_set_ddb_type(dev);
	flags = (dev->sata_dev.port_no << 4) | PM_PORT_SET;
	asd_ddbsite_write_byte(asd_ha, ddb, PM_PORT_FLAGS, flags);
	asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF);
	asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF);
	asd_init_sata(dev);

	parent_ddb = (int) (unsigned long) dev->parent->lldd_dev;
	asd_ddbsite_write_word(asd_ha, ddb, PARENT_DDB, parent_ddb);
	pmtable_ddb = asd_ddbsite_read_word(asd_ha, parent_ddb, SISTER_DDB);
	asd_ddbsite_write_word(asd_ha, pmtable_ddb, dev->sata_dev.port_no,ddb);

	if (asd_ddbsite_read_byte(asd_ha, ddb, NUM_SATA_TAGS) > 0) {
		i = asd_init_sata_tag_ddb(dev);
		if (i < 0) {
			asd_free_ddb(asd_ha, ddb);
			return i;
		}
	}
	return 0;
}

static int asd_init_initiator_ddb(struct domain_device *dev)
{
	return -ENODEV;
}

/**
 * asd_init_sata_pm_ddb -- SATA Port Multiplier
 * dev: pointer to domain device
 *
 * For STP and direct-attached SATA Port Multipliers we need
 * one target port DDB entry and one SATA PM table DDB entry.
 */
static int asd_init_sata_pm_ddb(struct domain_device *dev)
{
	int res = 0;

	res = asd_init_target_ddb(dev);
	if (res)
		goto out;
	res = asd_init_sata_pm_table_ddb(dev);
	if (res)
		asd_free_ddb(dev->port->ha->lldd_ha,
			     (int) (unsigned long) dev->lldd_dev);
out:
	return res;
}

int asd_dev_found(struct domain_device *dev)
{
	unsigned long flags;
	int res = 0;
	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;

	spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
	switch (dev->dev_type) {
	case SAS_SATA_PM:
		res = asd_init_sata_pm_ddb(dev);
		break;
	case SAS_SATA_PM_PORT:
		res = asd_init_sata_pm_port_ddb(dev);
		break;
	default:
		if (dev->tproto)
			res = asd_init_target_ddb(dev);
		else
			res = asd_init_initiator_ddb(dev);
	}
	spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);

	return res;
}

void asd_dev_gone(struct domain_device *dev)
{
	int ddb, sister_ddb;
	unsigned long flags;
	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;

	spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
	ddb = (int) (unsigned long) dev->lldd_dev;
	sister_ddb = asd_ddbsite_read_word(asd_ha, ddb, SISTER_DDB);

	if (sister_ddb != 0xFFFF)
		asd_free_ddb(asd_ha, sister_ddb);
	asd_free_ddb(asd_ha, ddb);
	dev->lldd_dev = NULL;
	spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
}
Commit	Line	Data
65c85c83	1	// SPDX-License-Identifier: GPL-2.0-only
2908d778 JB	2	/*
	3	* Aic94xx SAS/SATA DDB management
	4	*
	5	* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
	6	* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
	7	*
2908d778 JB	8	* $Id: //depot/aic94xx/aic94xx_dev.c#21 $
	9	*/
	10
	11	#include "aic94xx.h"
	12	#include "aic94xx_hwi.h"
	13	#include "aic94xx_reg.h"
	14	#include "aic94xx_sas.h"
	15
	16	#define FIND_FREE_DDB(_ha) find_first_zero_bit((_ha)->hw_prof.ddb_bitmap, \
	17	(_ha)->hw_prof.max_ddbs)
	18	#define SET_DDB(_ddb, _ha) set_bit(_ddb, (_ha)->hw_prof.ddb_bitmap)
	19	#define CLEAR_DDB(_ddb, _ha) clear_bit(_ddb, (_ha)->hw_prof.ddb_bitmap)
	20
81e56ded	21	static int asd_get_ddb(struct asd_ha_struct *asd_ha)
2908d778	22	{
2908d778 JB	23	int ddb, i;
2908d778 JB	24
2908d778 JB	25	ddb = FIND_FREE_DDB(asd_ha);
	26	if (ddb >= asd_ha->hw_prof.max_ddbs) {
	27	ddb = -ENOMEM;
2908d778 JB	28	goto out;
	29	}
	30	SET_DDB(ddb, asd_ha);
2908d778 JB	31
	32	for (i = 0; i < sizeof(struct asd_ddb_ssp_smp_target_port); i+= 4)
	33	asd_ddbsite_write_dword(asd_ha, ddb, i, 0);
	34	out:
	35	return ddb;
	36	}
	37
	38	#define INIT_CONN_TAG offsetof(struct asd_ddb_ssp_smp_target_port, init_conn_tag)
	39	#define DEST_SAS_ADDR offsetof(struct asd_ddb_ssp_smp_target_port, dest_sas_addr)
	40	#define SEND_QUEUE_HEAD offsetof(struct asd_ddb_ssp_smp_target_port, send_queue_head)
	41	#define DDB_TYPE offsetof(struct asd_ddb_ssp_smp_target_port, ddb_type)
	42	#define CONN_MASK offsetof(struct asd_ddb_ssp_smp_target_port, conn_mask)
	43	#define DDB_TARG_FLAGS offsetof(struct asd_ddb_ssp_smp_target_port, flags)
	44	#define DDB_TARG_FLAGS2 offsetof(struct asd_ddb_stp_sata_target_port, flags2)
	45	#define EXEC_QUEUE_TAIL offsetof(struct asd_ddb_ssp_smp_target_port, exec_queue_tail)
	46	#define SEND_QUEUE_TAIL offsetof(struct asd_ddb_ssp_smp_target_port, send_queue_tail)
	47	#define SISTER_DDB offsetof(struct asd_ddb_ssp_smp_target_port, sister_ddb)
	48	#define MAX_CCONN offsetof(struct asd_ddb_ssp_smp_target_port, max_concurrent_conn)
	49	#define NUM_CTX offsetof(struct asd_ddb_ssp_smp_target_port, num_contexts)
	50	#define ATA_CMD_SCBPTR offsetof(struct asd_ddb_stp_sata_target_port, ata_cmd_scbptr)
	51	#define SATA_TAG_ALLOC_MASK offsetof(struct asd_ddb_stp_sata_target_port, sata_tag_alloc_mask)
	52	#define NUM_SATA_TAGS offsetof(struct asd_ddb_stp_sata_target_port, num_sata_tags)
	53	#define SATA_STATUS offsetof(struct asd_ddb_stp_sata_target_port, sata_status)
	54	#define NCQ_DATA_SCB_PTR offsetof(struct asd_ddb_stp_sata_target_port, ncq_data_scb_ptr)
	55	#define ITNL_TIMEOUT offsetof(struct asd_ddb_ssp_smp_target_port, itnl_timeout)
	56
81e56ded	57	static void asd_free_ddb(struct asd_ha_struct *asd_ha, int ddb)
2908d778	58	{
2908d778 JB	59	if (!ddb \|\| ddb >= 0xFFFF)
	60	return;
	61	asd_ddbsite_write_byte(asd_ha, ddb, DDB_TYPE, DDB_TYPE_UNUSED);
2908d778	62	CLEAR_DDB(ddb, asd_ha);
2908d778 JB	63	}
2908d778 JB	64
81e56ded	65	static void asd_set_ddb_type(struct domain_device *dev)
2908d778 JB	66	{
	67	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	68	int ddb = (int) (unsigned long) dev->lldd_dev;
	69
aa9f8328	70	if (dev->dev_type == SAS_SATA_PM_PORT)
2908d778 JB	71	asd_ddbsite_write_byte(asd_ha,ddb, DDB_TYPE, DDB_TYPE_PM_PORT);
	72	else if (dev->tproto)
	73	asd_ddbsite_write_byte(asd_ha,ddb, DDB_TYPE, DDB_TYPE_TARGET);
	74	else
	75	asd_ddbsite_write_byte(asd_ha,ddb,DDB_TYPE,DDB_TYPE_INITIATOR);
	76	}
	77
	78	static int asd_init_sata_tag_ddb(struct domain_device *dev)
	79	{
	80	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	81	int ddb, i;
	82
	83	ddb = asd_get_ddb(asd_ha);
	84	if (ddb < 0)
	85	return ddb;
	86
	87	for (i = 0; i < sizeof(struct asd_ddb_sata_tag); i += 2)
	88	asd_ddbsite_write_word(asd_ha, ddb, i, 0xFFFF);
	89
	90	asd_ddbsite_write_word(asd_ha, (int) (unsigned long) dev->lldd_dev,
	91	SISTER_DDB, ddb);
	92	return 0;
	93	}
	94
b91bb296	95	void asd_set_dmamode(struct domain_device *dev)
2908d778 JB	96	{
2908d778 JB	97	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
b91bb296	98	struct ata_device *ata_dev = sas_to_ata_dev(dev);
2908d778 JB	99	int ddb = (int) (unsigned long) dev->lldd_dev;
2908d778 JB	100	u32 qdepth = 0;
2908d778	101
aa9f8328	102	if (dev->dev_type == SAS_SATA_DEV \|\| dev->dev_type == SAS_SATA_PM_PORT) {
b91bb296 DW	103	if (ata_id_has_ncq(ata_dev->id))
b91bb296 DW	104	qdepth = ata_id_queue_depth(ata_dev->id);
2908d778	105	asd_ddbsite_write_dword(asd_ha, ddb, SATA_TAG_ALLOC_MASK,
797f49de	106	(1ULL<<qdepth)-1);
2908d778 JB	107	asd_ddbsite_write_byte(asd_ha, ddb, NUM_SATA_TAGS, qdepth);
2908d778 JB	108	}
b91bb296 DW	109
	110	if (qdepth > 0)
	111	if (asd_init_sata_tag_ddb(dev) != 0) {
	112	unsigned long flags;
	113
	114	spin_lock_irqsave(dev->sata_dev.ap->lock, flags);
	115	ata_dev->flags \|= ATA_DFLAG_NCQ_OFF;
	116	spin_unlock_irqrestore(dev->sata_dev.ap->lock, flags);
	117	}
	118	}
	119
	120	static int asd_init_sata(struct domain_device *dev)
	121	{
	122	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	123	int ddb = (int) (unsigned long) dev->lldd_dev;
	124
	125	asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF);
aa9f8328 JB	126	if (dev->dev_type == SAS_SATA_DEV \|\| dev->dev_type == SAS_SATA_PM \|\|
aa9f8328 JB	127	dev->dev_type == SAS_SATA_PM_PORT) {
2908d778 JB	128	struct dev_to_host_fis fis = (struct dev_to_host_fis )
	129	dev->frame_rcvd;
	130	asd_ddbsite_write_byte(asd_ha, ddb, SATA_STATUS, fis->status);
	131	}
	132	asd_ddbsite_write_word(asd_ha, ddb, NCQ_DATA_SCB_PTR, 0xFFFF);
b91bb296 DW	133
b91bb296 DW	134	return 0;
2908d778 JB	135	}
	136
	137	static int asd_init_target_ddb(struct domain_device *dev)
	138	{
	139	int ddb, i;
	140	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	141	u8 flags = 0;
	142
	143	ddb = asd_get_ddb(asd_ha);
	144	if (ddb < 0)
	145	return ddb;
	146
	147	dev->lldd_dev = (void *) (unsigned long) ddb;
	148
	149	asd_ddbsite_write_byte(asd_ha, ddb, 0, DDB_TP_CONN_TYPE);
	150	asd_ddbsite_write_byte(asd_ha, ddb, 1, 0);
	151	asd_ddbsite_write_word(asd_ha, ddb, INIT_CONN_TAG, 0xFFFF);
	152	for (i = 0; i < SAS_ADDR_SIZE; i++)
	153	asd_ddbsite_write_byte(asd_ha, ddb, DEST_SAS_ADDR+i,
	154	dev->sas_addr[i]);
	155	asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_HEAD, 0xFFFF);
	156	asd_set_ddb_type(dev);
	157	asd_ddbsite_write_byte(asd_ha, ddb, CONN_MASK, dev->port->phy_mask);
	158	if (dev->port->oob_mode != SATA_OOB_MODE) {
	159	flags \|= OPEN_REQUIRED;
aa9f8328	160	if ((dev->dev_type == SAS_SATA_DEV) \|\|
5929faf3	161	(dev->tproto & SAS_PROTOCOL_STP)) {
2908d778 JB	162	struct smp_resp *rps_resp = &dev->sata_dev.rps_resp;
	163	if (rps_resp->frame_type == SMP_RESPONSE &&
	164	rps_resp->function == SMP_REPORT_PHY_SATA &&
	165	rps_resp->result == SMP_RESP_FUNC_ACC) {
	166	if (rps_resp->rps.affil_valid)
	167	flags \|= STP_AFFIL_POL;
	168	if (rps_resp->rps.affil_supp)
	169	flags \|= SUPPORTS_AFFIL;
	170	}
	171	} else {
	172	flags \|= CONCURRENT_CONN_SUPP;
924a3541	173	if (!dev->parent && dev_is_expander(dev->dev_type))
2908d778 JB	174	asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN,
	175	4);
	176	else
	177	asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN,
	178	dev->pathways);
	179	asd_ddbsite_write_byte(asd_ha, ddb, NUM_CTX, 1);
	180	}
	181	}
aa9f8328	182	if (dev->dev_type == SAS_SATA_PM)
2908d778 JB	183	flags \|= SATA_MULTIPORT;
	184	asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS, flags);
	185
	186	flags = 0;
5929faf3	187	if (dev->tproto & SAS_PROTOCOL_STP)
2908d778 JB	188	flags \|= STP_CL_POL_NO_TX;
	189	asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS2, flags);
	190
	191	asd_ddbsite_write_word(asd_ha, ddb, EXEC_QUEUE_TAIL, 0xFFFF);
	192	asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_TAIL, 0xFFFF);
	193	asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF);
	194
aa9f8328	195	if (dev->dev_type == SAS_SATA_DEV \|\| (dev->tproto & SAS_PROTOCOL_STP)) {
2908d778 JB	196	i = asd_init_sata(dev);
	197	if (i < 0) {
	198	asd_free_ddb(asd_ha, ddb);
	199	return i;
	200	}
	201	}
	202
aa9f8328	203	if (dev->dev_type == SAS_END_DEVICE) {
2908d778 JB	204	struct sas_end_device *rdev = rphy_to_end_device(dev->rphy);
	205	if (rdev->I_T_nexus_loss_timeout > 0)
	206	asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT,
	207	min(rdev->I_T_nexus_loss_timeout,
	208	(u16)ITNL_TIMEOUT_CONST));
	209	else
	210	asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT,
	211	(u16)ITNL_TIMEOUT_CONST);
	212	}
	213	return 0;
	214	}
	215
	216	static int asd_init_sata_pm_table_ddb(struct domain_device *dev)
	217	{
	218	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	219	int ddb, i;
	220
	221	ddb = asd_get_ddb(asd_ha);
	222	if (ddb < 0)
	223	return ddb;
	224
	225	for (i = 0; i < 32; i += 2)
	226	asd_ddbsite_write_word(asd_ha, ddb, i, 0xFFFF);
	227
	228	asd_ddbsite_write_word(asd_ha, (int) (unsigned long) dev->lldd_dev,
	229	SISTER_DDB, ddb);
	230
	231	return 0;
	232	}
	233
	234	#define PM_PORT_FLAGS offsetof(struct asd_ddb_sata_pm_port, pm_port_flags)
	235	#define PARENT_DDB offsetof(struct asd_ddb_sata_pm_port, parent_ddb)
	236
	237	/**
	238	* asd_init_sata_pm_port_ddb -- SATA Port Multiplier Port
	239	* dev: pointer to domain device
	240	*
	241	* For SATA Port Multiplier Ports we need to allocate one SATA Port
	242	* Multiplier Port DDB and depending on whether the target on it
	243	* supports SATA II NCQ, one SATA Tag DDB.
	244	*/
	245	static int asd_init_sata_pm_port_ddb(struct domain_device *dev)
	246	{
	247	int ddb, i, parent_ddb, pmtable_ddb;
	248	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
	249	u8 flags;
	250
	251	ddb = asd_get_ddb(asd_ha);
	252	if (ddb < 0)
	253	return ddb;
	254
	255	asd_set_ddb_type(dev);
	256	flags = (dev->sata_dev.port_no << 4) \| PM_PORT_SET;
	257	asd_ddbsite_write_byte(asd_ha, ddb, PM_PORT_FLAGS, flags);
	258	asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF);
	259	asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF);
	260	asd_init_sata(dev);
	261
	262	parent_ddb = (int) (unsigned long) dev->parent->lldd_dev;
	263	asd_ddbsite_write_word(asd_ha, ddb, PARENT_DDB, parent_ddb);
	264	pmtable_ddb = asd_ddbsite_read_word(asd_ha, parent_ddb, SISTER_DDB);
	265	asd_ddbsite_write_word(asd_ha, pmtable_ddb, dev->sata_dev.port_no,ddb);
	266
	267	if (asd_ddbsite_read_byte(asd_ha, ddb, NUM_SATA_TAGS) > 0) {
268	i = asd_init_sata_tag_ddb(dev);
269	if (i < 0) {
270	asd_free_ddb(asd_ha, ddb);
271	return i;
272	}
273	}
274	return 0;
275	}
276
277	static int asd_init_initiator_ddb(struct domain_device *dev)
278	{
279	return -ENODEV;
280	}
281
282	/**
283	* asd_init_sata_pm_ddb -- SATA Port Multiplier
284	* dev: pointer to domain device
285	*
286	* For STP and direct-attached SATA Port Multipliers we need
287	* one target port DDB entry and one SATA PM table DDB entry.
288	*/
289	static int asd_init_sata_pm_ddb(struct domain_device *dev)
290	{
291	int res = 0;
292
293	res = asd_init_target_ddb(dev);
294	if (res)
295	goto out;
296	res = asd_init_sata_pm_table_ddb(dev);
297	if (res)
298	asd_free_ddb(dev->port->ha->lldd_ha,
299	(int) (unsigned long) dev->lldd_dev);
300	out:
301	return res;
302	}
303
304	int asd_dev_found(struct domain_device *dev)
305	{
57ba07dc	306	unsigned long flags;
2908d778	307	int res = 0;
57ba07dc	308	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
2908d778	309
57ba07dc	310	spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
2908d778	311	switch (dev->dev_type) {
aa9f8328	312	case SAS_SATA_PM:
2908d778 JB	313	res = asd_init_sata_pm_ddb(dev);
2908d778 JB	314	break;
aa9f8328	315	case SAS_SATA_PM_PORT:
2908d778 JB	316	res = asd_init_sata_pm_port_ddb(dev);
	317	break;
	318	default:
	319	if (dev->tproto)
	320	res = asd_init_target_ddb(dev);
	321	else
	322	res = asd_init_initiator_ddb(dev);
	323	}
57ba07dc DW	324	spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
57ba07dc DW	325
2908d778 JB	326	return res;
	327	}
	328
	329	void asd_dev_gone(struct domain_device *dev)
	330	{
	331	int ddb, sister_ddb;
57ba07dc	332	unsigned long flags;
2908d778 JB	333	struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
2908d778 JB	334
57ba07dc	335	spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
2908d778 JB	336	ddb = (int) (unsigned long) dev->lldd_dev;
	337	sister_ddb = asd_ddbsite_read_word(asd_ha, ddb, SISTER_DDB);
	338
	339	if (sister_ddb != 0xFFFF)
	340	asd_free_ddb(asd_ha, sister_ddb);
	341	asd_free_ddb(asd_ha, ddb);
	342	dev->lldd_dev = NULL;
57ba07dc	343	spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
2908d778	344	}