drivers/scsi/aic94xx/aic94xx_dev.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   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  *
   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
  21 static int asd_get_ddb(struct asd_ha_struct *asd_ha)
  22 {
  23         int ddb, i;
  24
  25         ddb = FIND_FREE_DDB(asd_ha);
  26         if (ddb >= asd_ha->hw_prof.max_ddbs) {
  27                 ddb = -ENOMEM;
  28                 goto out;
  29         }
  30         SET_DDB(ddb, asd_ha);
  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
  57 static void asd_free_ddb(struct asd_ha_struct *asd_ha, int ddb)
  58 {
  59         if (!ddb || ddb >= 0xFFFF)
  60                 return;
  61         asd_ddbsite_write_byte(asd_ha, ddb, DDB_TYPE, DDB_TYPE_UNUSED);
  62         CLEAR_DDB(ddb, asd_ha);
  63 }
  64
  65 static void asd_set_ddb_type(struct domain_device *dev)
  66 {
  67         struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
  68         int ddb = (int) (unsigned long) dev->lldd_dev;
  69
  70         if (dev->dev_type == SAS_SATA_PM_PORT)
  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
  95 void asd_set_dmamode(struct domain_device *dev)
  96 {
  97         struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
  98         struct ata_device *ata_dev = sas_to_ata_dev(dev);
  99         int ddb = (int) (unsigned long) dev->lldd_dev;
 100         u32 qdepth = 0;
 101
 102         if (dev->dev_type == SAS_SATA_DEV || dev->dev_type == SAS_SATA_PM_PORT) {
 103                 if (ata_id_has_ncq(ata_dev->id))
 104                         qdepth = ata_id_queue_depth(ata_dev->id);
 105                 asd_ddbsite_write_dword(asd_ha, ddb, SATA_TAG_ALLOC_MASK,
 106                                         (1ULL<<qdepth)-1);
 107                 asd_ddbsite_write_byte(asd_ha, ddb, NUM_SATA_TAGS, qdepth);
 108         }
 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);
 126         if (dev->dev_type == SAS_SATA_DEV || dev->dev_type == SAS_SATA_PM ||
 127             dev->dev_type == SAS_SATA_PM_PORT) {
 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);
 133
 134         return 0;
 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;
 160                 if ((dev->dev_type == SAS_SATA_DEV) ||
 161                     (dev->tproto & SAS_PROTOCOL_STP)) {
 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;
 173                         if (!dev->parent && dev_is_expander(dev->dev_type))
 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         }
 182         if (dev->dev_type == SAS_SATA_PM)
 183                 flags |= SATA_MULTIPORT;
 184         asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS, flags);
 185
 186         flags = 0;
 187         if (dev->tproto & SAS_PROTOCOL_STP)
 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
 195         if (dev->dev_type == SAS_SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
 196                 i = asd_init_sata(dev);
 197                 if (i < 0) {
 198                         asd_free_ddb(asd_ha, ddb);
 199                         return i;
 200                 }
 201         }
 202
 203         if (dev->dev_type == SAS_END_DEVICE) {
 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 {
 306         unsigned long flags;
 307         int res = 0;
 308         struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
 309
 310         spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
 311         switch (dev->dev_type) {
 312         case SAS_SATA_PM:
 313                 res = asd_init_sata_pm_ddb(dev);
 314                 break;
 315         case SAS_SATA_PM_PORT:
 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         }
 324         spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
 325
 326         return res;
 327 }
 328
 329 void asd_dev_gone(struct domain_device *dev)
 330 {
 331         int ddb, sister_ddb;
 332         unsigned long flags;
 333         struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
 334
 335         spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
 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;
 343         spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
 344 }