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
asd_get_ddb(struct asd_ha_struct * asd_ha)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
asd_free_ddb(struct asd_ha_struct * asd_ha,int ddb)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
asd_set_ddb_type(struct domain_device * dev)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 == 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
asd_init_sata_tag_ddb(struct domain_device * dev)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
asd_set_dmamode(struct domain_device * dev)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 == SATA_DEV || dev->dev_type == 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
asd_init_sata(struct domain_device * dev)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 == SATA_DEV || dev->dev_type == SATA_PM ||
144 dev->dev_type == 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
asd_init_target_ddb(struct domain_device * dev)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 == 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 == EDGE_DEV ||
192 dev->dev_type == FANOUT_DEV))
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 == 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 == 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_DEV) {
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
asd_init_sata_pm_table_ddb(struct domain_device * dev)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 */
asd_init_sata_pm_port_ddb(struct domain_device * dev)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
asd_init_initiator_ddb(struct domain_device * dev)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 */
asd_init_sata_pm_ddb(struct domain_device * dev)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
asd_dev_found(struct domain_device * dev)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 SATA_PM:
332 res = asd_init_sata_pm_ddb(dev);
333 break;
334 case 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
asd_dev_gone(struct domain_device * dev)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