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
21static 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_site_no: ddb, offs: i, val: 0);
34out:
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
57static 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_site_no: ddb, DDB_TYPE, DDB_TYPE_UNUSED);
62 CLEAR_DDB(ddb, asd_ha);
63}
64
65static 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_site_no: ddb, DDB_TYPE, DDB_TYPE_PM_PORT);
72 else if (dev->tproto)
73 asd_ddbsite_write_byte(asd_ha,ddb_site_no: ddb, DDB_TYPE, DDB_TYPE_TARGET);
74 else
75 asd_ddbsite_write_byte(asd_ha,ddb_site_no: ddb,DDB_TYPE,DDB_TYPE_INITIATOR);
76}
77
78static 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_site_no: ddb, offs: i, val: 0xFFFF);
89
90 asd_ddbsite_write_word(asd_ha, ddb_site_no: (int) (unsigned long) dev->lldd_dev,
91 SISTER_DDB, val: ddb);
92 return 0;
93}
94
95void 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_site_no: ddb, SATA_TAG_ALLOC_MASK,
106 val: (1ULL<<qdepth)-1);
107 asd_ddbsite_write_byte(asd_ha, ddb_site_no: ddb, NUM_SATA_TAGS, val: 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(lock: dev->sata_dev.ap->lock, flags);
117 }
118}
119
120static 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_site_no: ddb, ATA_CMD_SCBPTR, val: 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_site_no: ddb, SATA_STATUS, val: fis->status);
131 }
132 asd_ddbsite_write_word(asd_ha, ddb_site_no: ddb, NCQ_DATA_SCB_PTR, val: 0xFFFF);
133
134 return 0;
135}
136
137static 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_site_no: ddb, offs: 0, DDB_TP_CONN_TYPE);
150 asd_ddbsite_write_byte(asd_ha, ddb_site_no: ddb, offs: 1, val: 0);
151 asd_ddbsite_write_word(asd_ha, ddb_site_no: ddb, INIT_CONN_TAG, val: 0xFFFF);
152 for (i = 0; i < SAS_ADDR_SIZE; i++)
153 asd_ddbsite_write_byte(asd_ha, ddb_site_no: ddb, DEST_SAS_ADDR+i,
154 val: dev->sas_addr[i]);
155 asd_ddbsite_write_word(asd_ha, ddb_site_no: ddb, SEND_QUEUE_HEAD, val: 0xFFFF);
156 asd_set_ddb_type(dev);
157 asd_ddbsite_write_byte(asd_ha, ddb_site_no: ddb, CONN_MASK, val: 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_rps_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(type: dev->dev_type))
174 asd_ddbsite_write_byte(asd_ha, ddb_site_no: ddb, MAX_CCONN,
175 val: 4);
176 else
177 asd_ddbsite_write_byte(asd_ha, ddb_site_no: ddb, MAX_CCONN,
178 val: dev->pathways);
179 asd_ddbsite_write_byte(asd_ha, ddb_site_no: ddb, NUM_CTX, val: 1);
180 }
181 }
182 if (dev->dev_type == SAS_SATA_PM)
183 flags |= SATA_MULTIPORT;
184 asd_ddbsite_write_byte(asd_ha, ddb_site_no: ddb, DDB_TARG_FLAGS, val: 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_site_no: ddb, DDB_TARG_FLAGS2, val: flags);
190
191 asd_ddbsite_write_word(asd_ha, ddb_site_no: ddb, EXEC_QUEUE_TAIL, val: 0xFFFF);
192 asd_ddbsite_write_word(asd_ha, ddb_site_no: ddb, SEND_QUEUE_TAIL, val: 0xFFFF);
193 asd_ddbsite_write_word(asd_ha, ddb_site_no: ddb, SISTER_DDB, val: 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_site_no: 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_site_no: ddb, ITNL_TIMEOUT,
211 val: (u16)ITNL_TIMEOUT_CONST);
212 }
213 return 0;
214}
215
216static 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_site_no: ddb, offs: i, val: 0xFFFF);
227
228 asd_ddbsite_write_word(asd_ha, ddb_site_no: (int) (unsigned long) dev->lldd_dev,
229 SISTER_DDB, val: 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 */
245static 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_site_no: ddb, PM_PORT_FLAGS, val: flags);
258 asd_ddbsite_write_word(asd_ha, ddb_site_no: ddb, SISTER_DDB, val: 0xFFFF);
259 asd_ddbsite_write_word(asd_ha, ddb_site_no: ddb, ATA_CMD_SCBPTR, val: 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_site_no: ddb, PARENT_DDB, val: parent_ddb);
264 pmtable_ddb = asd_ddbsite_read_word(asd_ha, ddb_site_no: parent_ddb, SISTER_DDB);
265 asd_ddbsite_write_word(asd_ha, ddb_site_no: pmtable_ddb, offs: dev->sata_dev.port_no,val: ddb);
266
267 if (asd_ddbsite_read_byte(asd_ha, ddb_site_no: 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
277static 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 */
289static 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(asd_ha: dev->port->ha->lldd_ha,
299 ddb: (int) (unsigned long) dev->lldd_dev);
300out:
301 return res;
302}
303
304int 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(lock: &asd_ha->hw_prof.ddb_lock, flags);
325
326 return res;
327}
328
329void 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_site_no: ddb, SISTER_DDB);
338
339 if (sister_ddb != 0xFFFF)
340 asd_free_ddb(asd_ha, ddb: sister_ddb);
341 asd_free_ddb(asd_ha, ddb);
342 dev->lldd_dev = NULL;
343 spin_unlock_irqrestore(lock: &asd_ha->hw_prof.ddb_lock, flags);
344}
345

source code of linux/drivers/scsi/aic94xx/aic94xx_dev.c