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 38static 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); 51out: 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 74static 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 82static 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 == 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 95static 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 112static int asd_init_sata(struct domain_device *dev) 113{ 114 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 115 int ddb = (int) (unsigned long) dev->lldd_dev; 116 u32 qdepth = 0; 117 int res = 0; 118 119 asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF); 120 if ((dev->dev_type == SATA_DEV || dev->dev_type == SATA_PM_PORT) && 121 dev->sata_dev.identify_device && 122 dev->sata_dev.identify_device[10] != 0) { 123 u16 w75 = le16_to_cpu(dev->sata_dev.identify_device[75]); 124 u16 w76 = le16_to_cpu(dev->sata_dev.identify_device[76]); 125 126 if (w76 & 0x100) /* NCQ? */ 127 qdepth = (w75 & 0x1F) + 1; 128 asd_ddbsite_write_dword(asd_ha, ddb, SATA_TAG_ALLOC_MASK, 129 (1ULL<<qdepth)-1); 130 asd_ddbsite_write_byte(asd_ha, ddb, NUM_SATA_TAGS, qdepth); 131 } 132 if (dev->dev_type == SATA_DEV || dev->dev_type == SATA_PM || 133 dev->dev_type == SATA_PM_PORT) { 134 struct dev_to_host_fis *fis = (struct dev_to_host_fis *) 135 dev->frame_rcvd; 136 asd_ddbsite_write_byte(asd_ha, ddb, SATA_STATUS, fis->status); 137 } 138 asd_ddbsite_write_word(asd_ha, ddb, NCQ_DATA_SCB_PTR, 0xFFFF); 139 if (qdepth > 0) 140 res = asd_init_sata_tag_ddb(dev); 141 return res; 142} 143 144static int asd_init_target_ddb(struct domain_device *dev) 145{ 146 int ddb, i; 147 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 148 u8 flags = 0; 149 150 ddb = asd_get_ddb(asd_ha); 151 if (ddb < 0) 152 return ddb; 153 154 dev->lldd_dev = (void *) (unsigned long) ddb; 155 156 asd_ddbsite_write_byte(asd_ha, ddb, 0, DDB_TP_CONN_TYPE); 157 asd_ddbsite_write_byte(asd_ha, ddb, 1, 0); 158 asd_ddbsite_write_word(asd_ha, ddb, INIT_CONN_TAG, 0xFFFF); 159 for (i = 0; i < SAS_ADDR_SIZE; i++) 160 asd_ddbsite_write_byte(asd_ha, ddb, DEST_SAS_ADDR+i, 161 dev->sas_addr[i]); 162 asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_HEAD, 0xFFFF); 163 asd_set_ddb_type(dev); 164 asd_ddbsite_write_byte(asd_ha, ddb, CONN_MASK, dev->port->phy_mask); 165 if (dev->port->oob_mode != SATA_OOB_MODE) { 166 flags |= OPEN_REQUIRED; 167 if ((dev->dev_type == SATA_DEV) || 168 (dev->tproto & SAS_PROTOCOL_STP)) { 169 struct smp_resp *rps_resp = &dev->sata_dev.rps_resp; 170 if (rps_resp->frame_type == SMP_RESPONSE && 171 rps_resp->function == SMP_REPORT_PHY_SATA && 172 rps_resp->result == SMP_RESP_FUNC_ACC) { 173 if (rps_resp->rps.affil_valid) 174 flags |= STP_AFFIL_POL; 175 if (rps_resp->rps.affil_supp) 176 flags |= SUPPORTS_AFFIL; 177 } 178 } else { 179 flags |= CONCURRENT_CONN_SUPP; 180 if (!dev->parent && 181 (dev->dev_type == EDGE_DEV || 182 dev->dev_type == FANOUT_DEV)) 183 asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN, 184 4); 185 else 186 asd_ddbsite_write_byte(asd_ha, ddb, MAX_CCONN, 187 dev->pathways); 188 asd_ddbsite_write_byte(asd_ha, ddb, NUM_CTX, 1); 189 } 190 } 191 if (dev->dev_type == SATA_PM) 192 flags |= SATA_MULTIPORT; 193 asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS, flags); 194 195 flags = 0; 196 if (dev->tproto & SAS_PROTOCOL_STP) 197 flags |= STP_CL_POL_NO_TX; 198 asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS2, flags); 199 200 asd_ddbsite_write_word(asd_ha, ddb, EXEC_QUEUE_TAIL, 0xFFFF); 201 asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_TAIL, 0xFFFF); 202 asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF); 203 204 if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { 205 i = asd_init_sata(dev); 206 if (i < 0) { 207 asd_free_ddb(asd_ha, ddb); 208 return i; 209 } 210 } 211 212 if (dev->dev_type == SAS_END_DEV) { 213 struct sas_end_device *rdev = rphy_to_end_device(dev->rphy); 214 if (rdev->I_T_nexus_loss_timeout > 0) 215 asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT, 216 min(rdev->I_T_nexus_loss_timeout, 217 (u16)ITNL_TIMEOUT_CONST)); 218 else 219 asd_ddbsite_write_word(asd_ha, ddb, ITNL_TIMEOUT, 220 (u16)ITNL_TIMEOUT_CONST); 221 } 222 return 0; 223} 224 225static int asd_init_sata_pm_table_ddb(struct domain_device *dev) 226{ 227 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 228 int ddb, i; 229 230 ddb = asd_get_ddb(asd_ha); 231 if (ddb < 0) 232 return ddb; 233 234 for (i = 0; i < 32; i += 2) 235 asd_ddbsite_write_word(asd_ha, ddb, i, 0xFFFF); 236 237 asd_ddbsite_write_word(asd_ha, (int) (unsigned long) dev->lldd_dev, 238 SISTER_DDB, ddb); 239 240 return 0; 241} 242 243#define PM_PORT_FLAGS offsetof(struct asd_ddb_sata_pm_port, pm_port_flags) 244#define PARENT_DDB offsetof(struct asd_ddb_sata_pm_port, parent_ddb) 245 246/** 247 * asd_init_sata_pm_port_ddb -- SATA Port Multiplier Port 248 * dev: pointer to domain device 249 * 250 * For SATA Port Multiplier Ports we need to allocate one SATA Port 251 * Multiplier Port DDB and depending on whether the target on it 252 * supports SATA II NCQ, one SATA Tag DDB. 253 */ 254static int asd_init_sata_pm_port_ddb(struct domain_device *dev) 255{ 256 int ddb, i, parent_ddb, pmtable_ddb; 257 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 258 u8 flags; 259 260 ddb = asd_get_ddb(asd_ha); 261 if (ddb < 0) 262 return ddb; 263 264 asd_set_ddb_type(dev); 265 flags = (dev->sata_dev.port_no << 4) | PM_PORT_SET; 266 asd_ddbsite_write_byte(asd_ha, ddb, PM_PORT_FLAGS, flags); 267 asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF); 268 asd_ddbsite_write_word(asd_ha, ddb, ATA_CMD_SCBPTR, 0xFFFF); 269 asd_init_sata(dev); 270 271 parent_ddb = (int) (unsigned long) dev->parent->lldd_dev; 272 asd_ddbsite_write_word(asd_ha, ddb, PARENT_DDB, parent_ddb); 273 pmtable_ddb = asd_ddbsite_read_word(asd_ha, parent_ddb, SISTER_DDB); 274 asd_ddbsite_write_word(asd_ha, pmtable_ddb, dev->sata_dev.port_no,ddb); 275 276 if (asd_ddbsite_read_byte(asd_ha, ddb, NUM_SATA_TAGS) > 0) { 277 i = asd_init_sata_tag_ddb(dev); 278 if (i < 0) { 279 asd_free_ddb(asd_ha, ddb); 280 return i; 281 } 282 } 283 return 0; 284} 285 286static int asd_init_initiator_ddb(struct domain_device *dev) 287{ 288 return -ENODEV; 289} 290 291/** 292 * asd_init_sata_pm_ddb -- SATA Port Multiplier 293 * dev: pointer to domain device 294 * 295 * For STP and direct-attached SATA Port Multipliers we need 296 * one target port DDB entry and one SATA PM table DDB entry. 297 */ 298static int asd_init_sata_pm_ddb(struct domain_device *dev) 299{ 300 int res = 0; 301 302 res = asd_init_target_ddb(dev); 303 if (res) 304 goto out; 305 res = asd_init_sata_pm_table_ddb(dev); 306 if (res) 307 asd_free_ddb(dev->port->ha->lldd_ha, 308 (int) (unsigned long) dev->lldd_dev); 309out: 310 return res; 311} 312 313int asd_dev_found(struct domain_device *dev) 314{ 315 unsigned long flags; 316 int res = 0; 317 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 318 319 spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags); 320 switch (dev->dev_type) { 321 case SATA_PM: 322 res = asd_init_sata_pm_ddb(dev); 323 break; 324 case SATA_PM_PORT: 325 res = asd_init_sata_pm_port_ddb(dev); 326 break; 327 default: 328 if (dev->tproto) 329 res = asd_init_target_ddb(dev); 330 else 331 res = asd_init_initiator_ddb(dev); 332 } 333 spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags); 334 335 return res; 336} 337 338void asd_dev_gone(struct domain_device *dev) 339{ 340 int ddb, sister_ddb; 341 unsigned long flags; 342 struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; 343 344 spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags); 345 ddb = (int) (unsigned long) dev->lldd_dev; 346 sister_ddb = asd_ddbsite_read_word(asd_ha, ddb, SISTER_DDB); 347 348 if (sister_ddb != 0xFFFF) 349 asd_free_ddb(asd_ha, sister_ddb); 350 asd_free_ddb(asd_ha, ddb); 351 dev->lldd_dev = NULL; 352 spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags); 353} 354