354 lines
11 KiB
C
354 lines
11 KiB
C
/*
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* Aic94xx SAS/SATA DDB management
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*
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* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
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* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
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*
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* This file is licensed under GPLv2.
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*
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* This file is part of the aic94xx driver.
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*
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* The aic94xx driver is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of the
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* License.
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*
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* The aic94xx driver is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the aic94xx driver; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* $Id: //depot/aic94xx/aic94xx_dev.c#21 $
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*/
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#include "aic94xx.h"
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#include "aic94xx_hwi.h"
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#include "aic94xx_reg.h"
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#include "aic94xx_sas.h"
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#define FIND_FREE_DDB(_ha) find_first_zero_bit((_ha)->hw_prof.ddb_bitmap, \
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(_ha)->hw_prof.max_ddbs)
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#define SET_DDB(_ddb, _ha) set_bit(_ddb, (_ha)->hw_prof.ddb_bitmap)
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#define CLEAR_DDB(_ddb, _ha) clear_bit(_ddb, (_ha)->hw_prof.ddb_bitmap)
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static inline int asd_get_ddb(struct asd_ha_struct *asd_ha)
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{
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unsigned long flags;
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int ddb, i;
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spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
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ddb = FIND_FREE_DDB(asd_ha);
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if (ddb >= asd_ha->hw_prof.max_ddbs) {
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ddb = -ENOMEM;
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spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
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goto out;
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}
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SET_DDB(ddb, asd_ha);
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spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
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for (i = 0; i < sizeof(struct asd_ddb_ssp_smp_target_port); i+= 4)
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asd_ddbsite_write_dword(asd_ha, ddb, i, 0);
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out:
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return ddb;
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}
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#define INIT_CONN_TAG offsetof(struct asd_ddb_ssp_smp_target_port, init_conn_tag)
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#define DEST_SAS_ADDR offsetof(struct asd_ddb_ssp_smp_target_port, dest_sas_addr)
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#define SEND_QUEUE_HEAD offsetof(struct asd_ddb_ssp_smp_target_port, send_queue_head)
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#define DDB_TYPE offsetof(struct asd_ddb_ssp_smp_target_port, ddb_type)
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#define CONN_MASK offsetof(struct asd_ddb_ssp_smp_target_port, conn_mask)
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#define DDB_TARG_FLAGS offsetof(struct asd_ddb_ssp_smp_target_port, flags)
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#define DDB_TARG_FLAGS2 offsetof(struct asd_ddb_stp_sata_target_port, flags2)
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#define EXEC_QUEUE_TAIL offsetof(struct asd_ddb_ssp_smp_target_port, exec_queue_tail)
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#define SEND_QUEUE_TAIL offsetof(struct asd_ddb_ssp_smp_target_port, send_queue_tail)
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#define SISTER_DDB offsetof(struct asd_ddb_ssp_smp_target_port, sister_ddb)
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#define MAX_CCONN offsetof(struct asd_ddb_ssp_smp_target_port, max_concurrent_conn)
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#define NUM_CTX offsetof(struct asd_ddb_ssp_smp_target_port, num_contexts)
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#define ATA_CMD_SCBPTR offsetof(struct asd_ddb_stp_sata_target_port, ata_cmd_scbptr)
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#define SATA_TAG_ALLOC_MASK offsetof(struct asd_ddb_stp_sata_target_port, sata_tag_alloc_mask)
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#define NUM_SATA_TAGS offsetof(struct asd_ddb_stp_sata_target_port, num_sata_tags)
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#define SATA_STATUS offsetof(struct asd_ddb_stp_sata_target_port, sata_status)
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#define NCQ_DATA_SCB_PTR offsetof(struct asd_ddb_stp_sata_target_port, ncq_data_scb_ptr)
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#define ITNL_TIMEOUT offsetof(struct asd_ddb_ssp_smp_target_port, itnl_timeout)
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static inline void asd_free_ddb(struct asd_ha_struct *asd_ha, int ddb)
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{
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unsigned long flags;
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if (!ddb || ddb >= 0xFFFF)
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return;
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asd_ddbsite_write_byte(asd_ha, ddb, DDB_TYPE, DDB_TYPE_UNUSED);
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spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
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CLEAR_DDB(ddb, asd_ha);
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spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
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}
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static inline void asd_set_ddb_type(struct domain_device *dev)
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{
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
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int ddb = (int) (unsigned long) dev->lldd_dev;
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if (dev->dev_type == SATA_PM_PORT)
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asd_ddbsite_write_byte(asd_ha,ddb, DDB_TYPE, DDB_TYPE_PM_PORT);
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else if (dev->tproto)
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asd_ddbsite_write_byte(asd_ha,ddb, DDB_TYPE, DDB_TYPE_TARGET);
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else
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asd_ddbsite_write_byte(asd_ha,ddb,DDB_TYPE,DDB_TYPE_INITIATOR);
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}
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static int asd_init_sata_tag_ddb(struct domain_device *dev)
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{
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
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int ddb, i;
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ddb = asd_get_ddb(asd_ha);
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if (ddb < 0)
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return ddb;
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for (i = 0; i < sizeof(struct asd_ddb_sata_tag); i += 2)
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asd_ddbsite_write_word(asd_ha, ddb, i, 0xFFFF);
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asd_ddbsite_write_word(asd_ha, (int) (unsigned long) dev->lldd_dev,
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SISTER_DDB, ddb);
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return 0;
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}
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static inline int asd_init_sata(struct domain_device *dev)
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{
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
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int ddb = (int) (unsigned long) dev->lldd_dev;
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u32 qdepth = 0;
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int res = 0;
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asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF);
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if ((dev->dev_type == SATA_DEV || dev->dev_type == SATA_PM_PORT) &&
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dev->sata_dev.identify_device &&
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dev->sata_dev.identify_device[10] != 0) {
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u16 w75 = le16_to_cpu(dev->sata_dev.identify_device[75]);
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u16 w76 = le16_to_cpu(dev->sata_dev.identify_device[76]);
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if (w76 & 0x100) /* NCQ? */
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qdepth = (w75 & 0x1F) + 1;
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asd_ddbsite_write_dword(asd_ha, ddb, SATA_TAG_ALLOC_MASK,
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(1<<qdepth)-1);
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asd_ddbsite_write_byte(asd_ha, ddb, NUM_SATA_TAGS, qdepth);
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}
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if (dev->dev_type == SATA_DEV || dev->dev_type == SATA_PM ||
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dev->dev_type == SATA_PM_PORT) {
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struct dev_to_host_fis *fis = (struct dev_to_host_fis *)
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dev->frame_rcvd;
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asd_ddbsite_write_byte(asd_ha, ddb, SATA_STATUS, fis->status);
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}
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asd_ddbsite_write_word(asd_ha, ddb, NCQ_DATA_SCB_PTR, 0xFFFF);
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if (qdepth > 0)
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res = asd_init_sata_tag_ddb(dev);
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return res;
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}
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static int asd_init_target_ddb(struct domain_device *dev)
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{
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int ddb, i;
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
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u8 flags = 0;
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ddb = asd_get_ddb(asd_ha);
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if (ddb < 0)
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return ddb;
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dev->lldd_dev = (void *) (unsigned long) ddb;
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asd_ddbsite_write_byte(asd_ha, ddb, 0, DDB_TP_CONN_TYPE);
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asd_ddbsite_write_byte(asd_ha, ddb, 1, 0);
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asd_ddbsite_write_word(asd_ha, ddb, INIT_CONN_TAG, 0xFFFF);
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for (i = 0; i < SAS_ADDR_SIZE; i++)
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asd_ddbsite_write_byte(asd_ha, ddb, DEST_SAS_ADDR+i,
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dev->sas_addr[i]);
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asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_HEAD, 0xFFFF);
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asd_set_ddb_type(dev);
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asd_ddbsite_write_byte(asd_ha, ddb, CONN_MASK, dev->port->phy_mask);
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if (dev->port->oob_mode != SATA_OOB_MODE) {
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flags |= OPEN_REQUIRED;
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if ((dev->dev_type == SATA_DEV) ||
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(dev->tproto & SAS_PROTO_STP)) {
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struct smp_resp *rps_resp = &dev->sata_dev.rps_resp;
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if (rps_resp->frame_type == SMP_RESPONSE &&
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rps_resp->function == SMP_REPORT_PHY_SATA &&
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rps_resp->result == SMP_RESP_FUNC_ACC) {
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if (rps_resp->rps.affil_valid)
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flags |= STP_AFFIL_POL;
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if (rps_resp->rps.affil_supp)
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flags |= SUPPORTS_AFFIL;
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}
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} else {
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flags |= CONCURRENT_CONN_SUPP;
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if (!dev->parent &&
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(dev->dev_type == EDGE_DEV ||
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dev->dev_type == FANOUT_DEV))
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asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN,
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4);
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else
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asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN,
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dev->pathways);
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asd_ddbsite_write_byte(asd_ha, ddb, NUM_CTX, 1);
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}
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}
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if (dev->dev_type == SATA_PM)
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flags |= SATA_MULTIPORT;
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asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS, flags);
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flags = 0;
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if (dev->tproto & SAS_PROTO_STP)
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flags |= STP_CL_POL_NO_TX;
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asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS2, flags);
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asd_ddbsite_write_word(asd_ha, ddb, EXEC_QUEUE_TAIL, 0xFFFF);
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asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_TAIL, 0xFFFF);
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asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF);
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if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTO_STP)) {
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i = asd_init_sata(dev);
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if (i < 0) {
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asd_free_ddb(asd_ha, ddb);
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return i;
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}
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}
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if (dev->dev_type == SAS_END_DEV) {
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struct sas_end_device *rdev = rphy_to_end_device(dev->rphy);
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if (rdev->I_T_nexus_loss_timeout > 0)
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asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT,
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min(rdev->I_T_nexus_loss_timeout,
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(u16)ITNL_TIMEOUT_CONST));
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else
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asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT,
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(u16)ITNL_TIMEOUT_CONST);
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}
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return 0;
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}
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static int asd_init_sata_pm_table_ddb(struct domain_device *dev)
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{
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
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int ddb, i;
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ddb = asd_get_ddb(asd_ha);
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if (ddb < 0)
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return ddb;
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for (i = 0; i < 32; i += 2)
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asd_ddbsite_write_word(asd_ha, ddb, i, 0xFFFF);
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asd_ddbsite_write_word(asd_ha, (int) (unsigned long) dev->lldd_dev,
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SISTER_DDB, ddb);
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return 0;
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}
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#define PM_PORT_FLAGS offsetof(struct asd_ddb_sata_pm_port, pm_port_flags)
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#define PARENT_DDB offsetof(struct asd_ddb_sata_pm_port, parent_ddb)
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/**
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* asd_init_sata_pm_port_ddb -- SATA Port Multiplier Port
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* dev: pointer to domain device
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*
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* For SATA Port Multiplier Ports we need to allocate one SATA Port
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* Multiplier Port DDB and depending on whether the target on it
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* supports SATA II NCQ, one SATA Tag DDB.
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*/
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static int asd_init_sata_pm_port_ddb(struct domain_device *dev)
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{
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int ddb, i, parent_ddb, pmtable_ddb;
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
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u8 flags;
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ddb = asd_get_ddb(asd_ha);
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if (ddb < 0)
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return ddb;
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asd_set_ddb_type(dev);
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flags = (dev->sata_dev.port_no << 4) | PM_PORT_SET;
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asd_ddbsite_write_byte(asd_ha, ddb, PM_PORT_FLAGS, flags);
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asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF);
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asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF);
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asd_init_sata(dev);
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parent_ddb = (int) (unsigned long) dev->parent->lldd_dev;
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asd_ddbsite_write_word(asd_ha, ddb, PARENT_DDB, parent_ddb);
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pmtable_ddb = asd_ddbsite_read_word(asd_ha, parent_ddb, SISTER_DDB);
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asd_ddbsite_write_word(asd_ha, pmtable_ddb, dev->sata_dev.port_no,ddb);
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if (asd_ddbsite_read_byte(asd_ha, ddb, NUM_SATA_TAGS) > 0) {
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i = asd_init_sata_tag_ddb(dev);
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if (i < 0) {
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asd_free_ddb(asd_ha, ddb);
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return i;
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}
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}
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return 0;
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}
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static int asd_init_initiator_ddb(struct domain_device *dev)
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{
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return -ENODEV;
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}
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/**
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* asd_init_sata_pm_ddb -- SATA Port Multiplier
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* dev: pointer to domain device
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*
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* For STP and direct-attached SATA Port Multipliers we need
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* one target port DDB entry and one SATA PM table DDB entry.
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*/
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static int asd_init_sata_pm_ddb(struct domain_device *dev)
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{
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int res = 0;
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res = asd_init_target_ddb(dev);
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if (res)
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goto out;
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res = asd_init_sata_pm_table_ddb(dev);
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if (res)
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asd_free_ddb(dev->port->ha->lldd_ha,
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(int) (unsigned long) dev->lldd_dev);
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out:
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return res;
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}
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int asd_dev_found(struct domain_device *dev)
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{
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int res = 0;
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switch (dev->dev_type) {
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case SATA_PM:
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res = asd_init_sata_pm_ddb(dev);
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break;
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case SATA_PM_PORT:
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res = asd_init_sata_pm_port_ddb(dev);
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break;
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default:
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if (dev->tproto)
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res = asd_init_target_ddb(dev);
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else
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res = asd_init_initiator_ddb(dev);
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}
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return res;
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}
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void asd_dev_gone(struct domain_device *dev)
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{
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int ddb, sister_ddb;
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
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ddb = (int) (unsigned long) dev->lldd_dev;
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sister_ddb = asd_ddbsite_read_word(asd_ha, ddb, SISTER_DDB);
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if (sister_ddb != 0xFFFF)
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asd_free_ddb(asd_ha, sister_ddb);
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asd_free_ddb(asd_ha, ddb);
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dev->lldd_dev = NULL;
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}
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