1 /* 2 * Aic94xx SAS/SATA DDB management 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 file is part of the aic94xx driver. 10 * 11 * The aic94xx driver is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; version 2 of the 14 * License. 15 * 16 * The aic94xx driver is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with the aic94xx driver; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 24 * 25 * $Id: //depot/aic94xx/aic94xx_dev.c#21 $ 26 */ 27 28 #include "aic94xx.h" 29 #include "aic94xx_hwi.h" 30 #include "aic94xx_reg.h" 31 #include "aic94xx_sas.h" 32 33 #define FIND_FREE_DDB(_ha) find_first_zero_bit((_ha)->hw_prof.ddb_bitmap, \ 34 (_ha)->hw_prof.max_ddbs) 35 #define SET_DDB(_ddb, _ha) set_bit(_ddb, (_ha)->hw_prof.ddb_bitmap) 36 #define CLEAR_DDB(_ddb, _ha) clear_bit(_ddb, (_ha)->hw_prof.ddb_bitmap) 37 38 static int asd_get_ddb(struct asd_ha_struct *asd_ha) 39 { 40 int ddb, i; 41 42 ddb = FIND_FREE_DDB(asd_ha); 43 if (ddb >= asd_ha->hw_prof.max_ddbs) { 44 ddb = -ENOMEM; 45 goto out; 46 } 47 SET_DDB(ddb, asd_ha); 48 49 for (i = 0; i < sizeof(struct asd_ddb_ssp_smp_target_port); i+= 4) 50 asd_ddbsite_write_dword(asd_ha, ddb, i, 0); 51 out: 52 return ddb; 53 } 54 55 #define INIT_CONN_TAG offsetof(struct asd_ddb_ssp_smp_target_port, init_conn_tag) 56 #define DEST_SAS_ADDR offsetof(struct asd_ddb_ssp_smp_target_port, dest_sas_addr) 57 #define SEND_QUEUE_HEAD offsetof(struct asd_ddb_ssp_smp_target_port, send_queue_head) 58 #define DDB_TYPE offsetof(struct asd_ddb_ssp_smp_target_port, ddb_type) 59 #define CONN_MASK offsetof(struct asd_ddb_ssp_smp_target_port, conn_mask) 60 #define DDB_TARG_FLAGS offsetof(struct asd_ddb_ssp_smp_target_port, flags) 61 #define DDB_TARG_FLAGS2 offsetof(struct asd_ddb_stp_sata_target_port, flags2) 62 #define EXEC_QUEUE_TAIL offsetof(struct asd_ddb_ssp_smp_target_port, exec_queue_tail) 63 #define SEND_QUEUE_TAIL offsetof(struct asd_ddb_ssp_smp_target_port, send_queue_tail) 64 #define SISTER_DDB offsetof(struct asd_ddb_ssp_smp_target_port, sister_ddb) 65 #define MAX_CCONN offsetof(struct asd_ddb_ssp_smp_target_port, max_concurrent_conn) 66 #define NUM_CTX offsetof(struct asd_ddb_ssp_smp_target_port, num_contexts) 67 #define ATA_CMD_SCBPTR offsetof(struct asd_ddb_stp_sata_target_port, ata_cmd_scbptr) 68 #define SATA_TAG_ALLOC_MASK offsetof(struct asd_ddb_stp_sata_target_port, sata_tag_alloc_mask) 69 #define NUM_SATA_TAGS offsetof(struct asd_ddb_stp_sata_target_port, num_sata_tags) 70 #define SATA_STATUS offsetof(struct asd_ddb_stp_sata_target_port, sata_status) 71 #define NCQ_DATA_SCB_PTR offsetof(struct asd_ddb_stp_sata_target_port, ncq_data_scb_ptr) 72 #define ITNL_TIMEOUT offsetof(struct asd_ddb_ssp_smp_target_port, itnl_timeout) 73 74 static void asd_free_ddb(struct asd_ha_struct *asd_ha, int ddb) 75 { 76 if (!ddb || ddb >= 0xFFFF) 77 return; 78 asd_ddbsite_write_byte(asd_ha, ddb, DDB_TYPE, DDB_TYPE_UNUSED); 79 CLEAR_DDB(ddb, asd_ha); 80 } 81 82 static void asd_set_ddb_type(struct domain_device *dev) 83 { 84 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 85 int ddb = (int) (unsigned long) dev->lldd_dev; 86 87 if (dev->dev_type == SAS_SATA_PM_PORT) 88 asd_ddbsite_write_byte(asd_ha,ddb, DDB_TYPE, DDB_TYPE_PM_PORT); 89 else if (dev->tproto) 90 asd_ddbsite_write_byte(asd_ha,ddb, DDB_TYPE, DDB_TYPE_TARGET); 91 else 92 asd_ddbsite_write_byte(asd_ha,ddb,DDB_TYPE,DDB_TYPE_INITIATOR); 93 } 94 95 static int asd_init_sata_tag_ddb(struct domain_device *dev) 96 { 97 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 98 int ddb, i; 99 100 ddb = asd_get_ddb(asd_ha); 101 if (ddb < 0) 102 return ddb; 103 104 for (i = 0; i < sizeof(struct asd_ddb_sata_tag); i += 2) 105 asd_ddbsite_write_word(asd_ha, ddb, i, 0xFFFF); 106 107 asd_ddbsite_write_word(asd_ha, (int) (unsigned long) dev->lldd_dev, 108 SISTER_DDB, ddb); 109 return 0; 110 } 111 112 void asd_set_dmamode(struct domain_device *dev) 113 { 114 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 115 struct ata_device *ata_dev = sas_to_ata_dev(dev); 116 int ddb = (int) (unsigned long) dev->lldd_dev; 117 u32 qdepth = 0; 118 119 if (dev->dev_type == SAS_SATA_DEV || dev->dev_type == SAS_SATA_PM_PORT) { 120 if (ata_id_has_ncq(ata_dev->id)) 121 qdepth = ata_id_queue_depth(ata_dev->id); 122 asd_ddbsite_write_dword(asd_ha, ddb, SATA_TAG_ALLOC_MASK, 123 (1ULL<<qdepth)-1); 124 asd_ddbsite_write_byte(asd_ha, ddb, NUM_SATA_TAGS, qdepth); 125 } 126 127 if (qdepth > 0) 128 if (asd_init_sata_tag_ddb(dev) != 0) { 129 unsigned long flags; 130 131 spin_lock_irqsave(dev->sata_dev.ap->lock, flags); 132 ata_dev->flags |= ATA_DFLAG_NCQ_OFF; 133 spin_unlock_irqrestore(dev->sata_dev.ap->lock, flags); 134 } 135 } 136 137 static int asd_init_sata(struct domain_device *dev) 138 { 139 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 140 int ddb = (int) (unsigned long) dev->lldd_dev; 141 142 asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF); 143 if (dev->dev_type == SAS_SATA_DEV || dev->dev_type == SAS_SATA_PM || 144 dev->dev_type == SAS_SATA_PM_PORT) { 145 struct dev_to_host_fis *fis = (struct dev_to_host_fis *) 146 dev->frame_rcvd; 147 asd_ddbsite_write_byte(asd_ha, ddb, SATA_STATUS, fis->status); 148 } 149 asd_ddbsite_write_word(asd_ha, ddb, NCQ_DATA_SCB_PTR, 0xFFFF); 150 151 return 0; 152 } 153 154 static int asd_init_target_ddb(struct domain_device *dev) 155 { 156 int ddb, i; 157 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 158 u8 flags = 0; 159 160 ddb = asd_get_ddb(asd_ha); 161 if (ddb < 0) 162 return ddb; 163 164 dev->lldd_dev = (void *) (unsigned long) ddb; 165 166 asd_ddbsite_write_byte(asd_ha, ddb, 0, DDB_TP_CONN_TYPE); 167 asd_ddbsite_write_byte(asd_ha, ddb, 1, 0); 168 asd_ddbsite_write_word(asd_ha, ddb, INIT_CONN_TAG, 0xFFFF); 169 for (i = 0; i < SAS_ADDR_SIZE; i++) 170 asd_ddbsite_write_byte(asd_ha, ddb, DEST_SAS_ADDR+i, 171 dev->sas_addr[i]); 172 asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_HEAD, 0xFFFF); 173 asd_set_ddb_type(dev); 174 asd_ddbsite_write_byte(asd_ha, ddb, CONN_MASK, dev->port->phy_mask); 175 if (dev->port->oob_mode != SATA_OOB_MODE) { 176 flags |= OPEN_REQUIRED; 177 if ((dev->dev_type == SAS_SATA_DEV) || 178 (dev->tproto & SAS_PROTOCOL_STP)) { 179 struct smp_resp *rps_resp = &dev->sata_dev.rps_resp; 180 if (rps_resp->frame_type == SMP_RESPONSE && 181 rps_resp->function == SMP_REPORT_PHY_SATA && 182 rps_resp->result == SMP_RESP_FUNC_ACC) { 183 if (rps_resp->rps.affil_valid) 184 flags |= STP_AFFIL_POL; 185 if (rps_resp->rps.affil_supp) 186 flags |= SUPPORTS_AFFIL; 187 } 188 } else { 189 flags |= CONCURRENT_CONN_SUPP; 190 if (!dev->parent && 191 (dev->dev_type == SAS_EDGE_EXPANDER_DEVICE || 192 dev->dev_type == SAS_FANOUT_EXPANDER_DEVICE)) 193 asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN, 194 4); 195 else 196 asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN, 197 dev->pathways); 198 asd_ddbsite_write_byte(asd_ha, ddb, NUM_CTX, 1); 199 } 200 } 201 if (dev->dev_type == SAS_SATA_PM) 202 flags |= SATA_MULTIPORT; 203 asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS, flags); 204 205 flags = 0; 206 if (dev->tproto & SAS_PROTOCOL_STP) 207 flags |= STP_CL_POL_NO_TX; 208 asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS2, flags); 209 210 asd_ddbsite_write_word(asd_ha, ddb, EXEC_QUEUE_TAIL, 0xFFFF); 211 asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_TAIL, 0xFFFF); 212 asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF); 213 214 if (dev->dev_type == SAS_SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { 215 i = asd_init_sata(dev); 216 if (i < 0) { 217 asd_free_ddb(asd_ha, ddb); 218 return i; 219 } 220 } 221 222 if (dev->dev_type == SAS_END_DEVICE) { 223 struct sas_end_device *rdev = rphy_to_end_device(dev->rphy); 224 if (rdev->I_T_nexus_loss_timeout > 0) 225 asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT, 226 min(rdev->I_T_nexus_loss_timeout, 227 (u16)ITNL_TIMEOUT_CONST)); 228 else 229 asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT, 230 (u16)ITNL_TIMEOUT_CONST); 231 } 232 return 0; 233 } 234 235 static int asd_init_sata_pm_table_ddb(struct domain_device *dev) 236 { 237 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 238 int ddb, i; 239 240 ddb = asd_get_ddb(asd_ha); 241 if (ddb < 0) 242 return ddb; 243 244 for (i = 0; i < 32; i += 2) 245 asd_ddbsite_write_word(asd_ha, ddb, i, 0xFFFF); 246 247 asd_ddbsite_write_word(asd_ha, (int) (unsigned long) dev->lldd_dev, 248 SISTER_DDB, ddb); 249 250 return 0; 251 } 252 253 #define PM_PORT_FLAGS offsetof(struct asd_ddb_sata_pm_port, pm_port_flags) 254 #define PARENT_DDB offsetof(struct asd_ddb_sata_pm_port, parent_ddb) 255 256 /** 257 * asd_init_sata_pm_port_ddb -- SATA Port Multiplier Port 258 * dev: pointer to domain device 259 * 260 * For SATA Port Multiplier Ports we need to allocate one SATA Port 261 * Multiplier Port DDB and depending on whether the target on it 262 * supports SATA II NCQ, one SATA Tag DDB. 263 */ 264 static int asd_init_sata_pm_port_ddb(struct domain_device *dev) 265 { 266 int ddb, i, parent_ddb, pmtable_ddb; 267 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 268 u8 flags; 269 270 ddb = asd_get_ddb(asd_ha); 271 if (ddb < 0) 272 return ddb; 273 274 asd_set_ddb_type(dev); 275 flags = (dev->sata_dev.port_no << 4) | PM_PORT_SET; 276 asd_ddbsite_write_byte(asd_ha, ddb, PM_PORT_FLAGS, flags); 277 asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF); 278 asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF); 279 asd_init_sata(dev); 280 281 parent_ddb = (int) (unsigned long) dev->parent->lldd_dev; 282 asd_ddbsite_write_word(asd_ha, ddb, PARENT_DDB, parent_ddb); 283 pmtable_ddb = asd_ddbsite_read_word(asd_ha, parent_ddb, SISTER_DDB); 284 asd_ddbsite_write_word(asd_ha, pmtable_ddb, dev->sata_dev.port_no,ddb); 285 286 if (asd_ddbsite_read_byte(asd_ha, ddb, NUM_SATA_TAGS) > 0) { 287 i = asd_init_sata_tag_ddb(dev); 288 if (i < 0) { 289 asd_free_ddb(asd_ha, ddb); 290 return i; 291 } 292 } 293 return 0; 294 } 295 296 static int asd_init_initiator_ddb(struct domain_device *dev) 297 { 298 return -ENODEV; 299 } 300 301 /** 302 * asd_init_sata_pm_ddb -- SATA Port Multiplier 303 * dev: pointer to domain device 304 * 305 * For STP and direct-attached SATA Port Multipliers we need 306 * one target port DDB entry and one SATA PM table DDB entry. 307 */ 308 static int asd_init_sata_pm_ddb(struct domain_device *dev) 309 { 310 int res = 0; 311 312 res = asd_init_target_ddb(dev); 313 if (res) 314 goto out; 315 res = asd_init_sata_pm_table_ddb(dev); 316 if (res) 317 asd_free_ddb(dev->port->ha->lldd_ha, 318 (int) (unsigned long) dev->lldd_dev); 319 out: 320 return res; 321 } 322 323 int asd_dev_found(struct domain_device *dev) 324 { 325 unsigned long flags; 326 int res = 0; 327 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 328 329 spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags); 330 switch (dev->dev_type) { 331 case SAS_SATA_PM: 332 res = asd_init_sata_pm_ddb(dev); 333 break; 334 case SAS_SATA_PM_PORT: 335 res = asd_init_sata_pm_port_ddb(dev); 336 break; 337 default: 338 if (dev->tproto) 339 res = asd_init_target_ddb(dev); 340 else 341 res = asd_init_initiator_ddb(dev); 342 } 343 spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags); 344 345 return res; 346 } 347 348 void asd_dev_gone(struct domain_device *dev) 349 { 350 int ddb, sister_ddb; 351 unsigned long flags; 352 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 353 354 spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags); 355 ddb = (int) (unsigned long) dev->lldd_dev; 356 sister_ddb = asd_ddbsite_read_word(asd_ha, ddb, SISTER_DDB); 357 358 if (sister_ddb != 0xFFFF) 359 asd_free_ddb(asd_ha, sister_ddb); 360 asd_free_ddb(asd_ha, ddb); 361 dev->lldd_dev = NULL; 362 spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags); 363 } 364