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6f231dda DW |
1 | /* |
2 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
3 | * redistributing this file, you may do so under either license. | |
4 | * | |
5 | * GPL LICENSE SUMMARY | |
6 | * | |
7 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of version 2 of the GNU General Public License as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
21 | * The full GNU General Public License is included in this distribution | |
22 | * in the file called LICENSE.GPL. | |
23 | * | |
24 | * BSD LICENSE | |
25 | * | |
26 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. | |
27 | * All rights reserved. | |
28 | * | |
29 | * Redistribution and use in source and binary forms, with or without | |
30 | * modification, are permitted provided that the following conditions | |
31 | * are met: | |
32 | * | |
33 | * * Redistributions of source code must retain the above copyright | |
34 | * notice, this list of conditions and the following disclaimer. | |
35 | * * Redistributions in binary form must reproduce the above copyright | |
36 | * notice, this list of conditions and the following disclaimer in | |
37 | * the documentation and/or other materials provided with the | |
38 | * distribution. | |
39 | * * Neither the name of Intel Corporation nor the names of its | |
40 | * contributors may be used to endorse or promote products derived | |
41 | * from this software without specific prior written permission. | |
42 | * | |
43 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
44 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
45 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
46 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
47 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
48 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
49 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
50 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
51 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
52 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
53 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
54 | */ | |
55 | ||
d7b90fc3 | 56 | #include "sas.h" |
6f231dda | 57 | #include "intel_sas.h" |
6f231dda DW |
58 | #include "scic_controller.h" |
59 | #include "scic_phy.h" | |
60 | #include "scic_port.h" | |
61 | #include "scic_sds_controller.h" | |
62 | #include "scic_sds_phy.h" | |
6f231dda | 63 | #include "scic_sds_port.h" |
88f3b62a DW |
64 | #include "remote_device.h" |
65 | #include "remote_node_context.h" | |
6f231dda | 66 | #include "scic_sds_request.h" |
6f231dda | 67 | #include "sci_environment.h" |
bc99aa47 | 68 | #include "scu_registers.h" |
6f231dda | 69 | |
6f231dda DW |
70 | #define SCIC_SDS_PORT_MIN_TIMER_COUNT (SCI_MAX_PORTS) |
71 | #define SCIC_SDS_PORT_MAX_TIMER_COUNT (SCI_MAX_PORTS) | |
72 | ||
73 | #define SCIC_SDS_PORT_HARD_RESET_TIMEOUT (1000) | |
a8d4b9fe | 74 | #define SCU_DUMMY_INDEX (0xFFFF) |
6f231dda | 75 | |
6f231dda DW |
76 | |
77 | /** | |
78 | * | |
e2023b87 | 79 | * @sci_port: This is the port object to which the phy is being assigned. |
6f231dda DW |
80 | * @phy_index: This is the phy index that is being assigned to the port. |
81 | * | |
82 | * This method will return a true value if the specified phy can be assigned to | |
83 | * this port The following is a list of phys for each port that are allowed: - | |
84 | * Port 0 - 3 2 1 0 - Port 1 - 1 - Port 2 - 3 2 - Port 3 - 3 This method | |
85 | * doesn't preclude all configurations. It merely ensures that a phy is part | |
86 | * of the allowable set of phy identifiers for that port. For example, one | |
87 | * could assign phy 3 to port 0 and no other phys. Please refer to | |
88 | * scic_sds_port_is_phy_mask_valid() for information regarding whether the | |
89 | * phy_mask for a port can be supported. bool true if this is a valid phy | |
90 | * assignment for the port false if this is not a valid phy assignment for the | |
91 | * port | |
92 | */ | |
93 | bool scic_sds_port_is_valid_phy_assignment( | |
e2023b87 | 94 | struct scic_sds_port *sci_port, |
6f231dda DW |
95 | u32 phy_index) |
96 | { | |
97 | /* Initialize to invalid value. */ | |
98 | u32 existing_phy_index = SCI_MAX_PHYS; | |
99 | u32 index; | |
100 | ||
e2023b87 | 101 | if ((sci_port->physical_port_index == 1) && (phy_index != 1)) { |
6f231dda DW |
102 | return false; |
103 | } | |
104 | ||
e2023b87 | 105 | if (sci_port->physical_port_index == 3 && phy_index != 3) { |
6f231dda DW |
106 | return false; |
107 | } | |
108 | ||
109 | if ( | |
e2023b87 | 110 | (sci_port->physical_port_index == 2) |
6f231dda DW |
111 | && ((phy_index == 0) || (phy_index == 1)) |
112 | ) { | |
113 | return false; | |
114 | } | |
115 | ||
116 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
e2023b87 | 117 | if ((sci_port->phy_table[index] != NULL) |
6f231dda DW |
118 | && (index != phy_index)) { |
119 | existing_phy_index = index; | |
120 | } | |
121 | } | |
122 | ||
123 | /* | |
124 | * Ensure that all of the phys in the port are capable of | |
125 | * operating at the same maximum link rate. */ | |
126 | if ( | |
127 | (existing_phy_index < SCI_MAX_PHYS) | |
e2023b87 | 128 | && (sci_port->owning_controller->user_parameters.sds1.phys[ |
6f231dda | 129 | phy_index].max_speed_generation != |
e2023b87 | 130 | sci_port->owning_controller->user_parameters.sds1.phys[ |
6f231dda DW |
131 | existing_phy_index].max_speed_generation) |
132 | ) | |
133 | return false; | |
134 | ||
135 | return true; | |
136 | } | |
137 | ||
138 | /** | |
139 | * This method requests a list (mask) of the phys contained in the supplied SAS | |
140 | * port. | |
e2023b87 | 141 | * @sci_port: a handle corresponding to the SAS port for which to return the |
6f231dda DW |
142 | * phy mask. |
143 | * | |
144 | * Return a bit mask indicating which phys are a part of this port. Each bit | |
145 | * corresponds to a phy identifier (e.g. bit 0 = phy id 0). | |
146 | */ | |
e2023b87 | 147 | static u32 scic_sds_port_get_phys(struct scic_sds_port *sci_port) |
6f231dda DW |
148 | { |
149 | u32 index; | |
150 | u32 mask; | |
151 | ||
152 | mask = 0; | |
153 | ||
154 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
e2023b87 | 155 | if (sci_port->phy_table[index] != NULL) { |
6f231dda DW |
156 | mask |= (1 << index); |
157 | } | |
158 | } | |
159 | ||
160 | return mask; | |
161 | } | |
162 | ||
163 | /** | |
164 | * | |
e2023b87 | 165 | * @sci_port: This is the port object for which to determine if the phy mask |
6f231dda DW |
166 | * can be supported. |
167 | * | |
168 | * This method will return a true value if the port's phy mask can be supported | |
169 | * by the SCU. The following is a list of valid PHY mask configurations for | |
170 | * each port: - Port 0 - [[3 2] 1] 0 - Port 1 - [1] - Port 2 - [[3] 2] | |
171 | * - Port 3 - [3] This method returns a boolean indication specifying if the | |
172 | * phy mask can be supported. true if this is a valid phy assignment for the | |
173 | * port false if this is not a valid phy assignment for the port | |
174 | */ | |
35173d57 | 175 | static bool scic_sds_port_is_phy_mask_valid( |
e2023b87 | 176 | struct scic_sds_port *sci_port, |
6f231dda DW |
177 | u32 phy_mask) |
178 | { | |
e2023b87 | 179 | if (sci_port->physical_port_index == 0) { |
6f231dda DW |
180 | if (((phy_mask & 0x0F) == 0x0F) |
181 | || ((phy_mask & 0x03) == 0x03) | |
182 | || ((phy_mask & 0x01) == 0x01) | |
183 | || (phy_mask == 0)) | |
184 | return true; | |
e2023b87 | 185 | } else if (sci_port->physical_port_index == 1) { |
6f231dda DW |
186 | if (((phy_mask & 0x02) == 0x02) |
187 | || (phy_mask == 0)) | |
188 | return true; | |
e2023b87 | 189 | } else if (sci_port->physical_port_index == 2) { |
6f231dda DW |
190 | if (((phy_mask & 0x0C) == 0x0C) |
191 | || ((phy_mask & 0x04) == 0x04) | |
192 | || (phy_mask == 0)) | |
193 | return true; | |
e2023b87 | 194 | } else if (sci_port->physical_port_index == 3) { |
6f231dda DW |
195 | if (((phy_mask & 0x08) == 0x08) |
196 | || (phy_mask == 0)) | |
197 | return true; | |
198 | } | |
199 | ||
200 | return false; | |
201 | } | |
202 | ||
203 | /** | |
204 | * | |
e2023b87 | 205 | * @sci_port: This parameter specifies the port from which to return a |
6f231dda DW |
206 | * connected phy. |
207 | * | |
208 | * This method retrieves a currently active (i.e. connected) phy contained in | |
209 | * the port. Currently, the lowest order phy that is connected is returned. | |
210 | * This method returns a pointer to a SCIS_SDS_PHY object. NULL This value is | |
211 | * returned if there are no currently active (i.e. connected to a remote end | |
212 | * point) phys contained in the port. All other values specify a struct scic_sds_phy | |
213 | * object that is active in the port. | |
214 | */ | |
215 | static struct scic_sds_phy *scic_sds_port_get_a_connected_phy( | |
e2023b87 | 216 | struct scic_sds_port *sci_port |
6f231dda DW |
217 | ) { |
218 | u32 index; | |
219 | struct scic_sds_phy *phy; | |
220 | ||
221 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
222 | /* | |
223 | * Ensure that the phy is both part of the port and currently | |
224 | * connected to the remote end-point. */ | |
e2023b87 | 225 | phy = sci_port->phy_table[index]; |
6f231dda DW |
226 | if ( |
227 | (phy != NULL) | |
e2023b87 | 228 | && scic_sds_port_active_phy(sci_port, phy) |
6f231dda DW |
229 | ) { |
230 | return phy; | |
231 | } | |
232 | } | |
233 | ||
234 | return NULL; | |
235 | } | |
236 | ||
237 | /** | |
238 | * scic_sds_port_set_phy() - | |
239 | * @out]: port The port object to which the phy assignement is being made. | |
240 | * @out]: phy The phy which is being assigned to the port. | |
241 | * | |
242 | * This method attempts to make the assignment of the phy to the port. If | |
243 | * successful the phy is assigned to the ports phy table. bool true if the phy | |
244 | * assignment can be made. false if the phy assignement can not be made. This | |
245 | * is a functional test that only fails if the phy is currently assigned to a | |
246 | * different port. | |
247 | */ | |
35173d57 | 248 | static enum sci_status scic_sds_port_set_phy( |
6f231dda DW |
249 | struct scic_sds_port *port, |
250 | struct scic_sds_phy *phy) | |
251 | { | |
252 | /* | |
253 | * Check to see if we can add this phy to a port | |
254 | * that means that the phy is not part of a port and that the port does | |
255 | * not already have a phy assinged to the phy index. */ | |
256 | if ( | |
a7e536c7 EN |
257 | (port->phy_table[phy->phy_index] == NULL) |
258 | && (scic_sds_phy_get_port(phy) == NULL) | |
6f231dda DW |
259 | && scic_sds_port_is_valid_phy_assignment(port, phy->phy_index) |
260 | ) { | |
261 | /* | |
262 | * Phy is being added in the stopped state so we are in MPC mode | |
263 | * make logical port index = physical port index */ | |
264 | port->logical_port_index = port->physical_port_index; | |
265 | port->phy_table[phy->phy_index] = phy; | |
266 | scic_sds_phy_set_port(phy, port); | |
267 | ||
268 | return SCI_SUCCESS; | |
269 | } | |
270 | ||
271 | return SCI_FAILURE; | |
272 | } | |
273 | ||
274 | /** | |
275 | * scic_sds_port_clear_phy() - | |
276 | * @out]: port The port from which the phy is being cleared. | |
277 | * @out]: phy The phy being cleared from the port. | |
278 | * | |
279 | * This method will clear the phy assigned to this port. This method fails if | |
280 | * this phy is not currently assinged to this port. bool true if the phy is | |
281 | * removed from the port. false if this phy is not assined to this port. | |
282 | */ | |
35173d57 | 283 | static enum sci_status scic_sds_port_clear_phy( |
6f231dda DW |
284 | struct scic_sds_port *port, |
285 | struct scic_sds_phy *phy) | |
286 | { | |
287 | /* Make sure that this phy is part of this port */ | |
288 | if ( | |
289 | (port->phy_table[phy->phy_index] == phy) | |
290 | && (scic_sds_phy_get_port(phy) == port) | |
291 | ) { | |
292 | /* Yep it is assigned to this port so remove it */ | |
293 | scic_sds_phy_set_port( | |
294 | phy, | |
295 | &scic_sds_port_get_controller(port)->port_table[SCI_MAX_PORTS] | |
296 | ); | |
297 | ||
a7e536c7 | 298 | port->phy_table[phy->phy_index] = NULL; |
6f231dda DW |
299 | |
300 | return SCI_SUCCESS; | |
301 | } | |
302 | ||
303 | return SCI_FAILURE; | |
304 | } | |
305 | ||
306 | /** | |
307 | * scic_sds_port_add_phy() - | |
e2023b87 DJ |
308 | * @sci_port: This parameter specifies the port in which the phy will be added. |
309 | * @sci_phy: This parameter is the phy which is to be added to the port. | |
6f231dda DW |
310 | * |
311 | * This method will add a PHY to the selected port. This method returns an | |
312 | * enum sci_status. SCI_SUCCESS the phy has been added to the port. Any other status | |
313 | * is failre to add the phy to the port. | |
314 | */ | |
315 | enum sci_status scic_sds_port_add_phy( | |
e2023b87 DJ |
316 | struct scic_sds_port *sci_port, |
317 | struct scic_sds_phy *sci_phy) | |
6f231dda | 318 | { |
e2023b87 DJ |
319 | return sci_port->state_handlers->add_phy_handler( |
320 | sci_port, sci_phy); | |
6f231dda DW |
321 | } |
322 | ||
323 | ||
324 | /** | |
325 | * scic_sds_port_remove_phy() - | |
e2023b87 DJ |
326 | * @sci_port: This parameter specifies the port in which the phy will be added. |
327 | * @sci_phy: This parameter is the phy which is to be added to the port. | |
6f231dda DW |
328 | * |
329 | * This method will remove the PHY from the selected PORT. This method returns | |
330 | * an enum sci_status. SCI_SUCCESS the phy has been removed from the port. Any other | |
331 | * status is failre to add the phy to the port. | |
332 | */ | |
333 | enum sci_status scic_sds_port_remove_phy( | |
e2023b87 DJ |
334 | struct scic_sds_port *sci_port, |
335 | struct scic_sds_phy *sci_phy) | |
6f231dda | 336 | { |
e2023b87 DJ |
337 | return sci_port->state_handlers->remove_phy_handler( |
338 | sci_port, sci_phy); | |
6f231dda DW |
339 | } |
340 | ||
341 | /** | |
342 | * This method requests the SAS address for the supplied SAS port from the SCI | |
343 | * implementation. | |
e2023b87 | 344 | * @sci_port: a handle corresponding to the SAS port for which to return the |
6f231dda DW |
345 | * SAS address. |
346 | * @sas_address: This parameter specifies a pointer to a SAS address structure | |
347 | * into which the core will copy the SAS address for the port. | |
348 | * | |
349 | */ | |
350 | void scic_sds_port_get_sas_address( | |
e2023b87 | 351 | struct scic_sds_port *sci_port, |
6f231dda DW |
352 | struct sci_sas_address *sas_address) |
353 | { | |
354 | u32 index; | |
355 | ||
356 | sas_address->high = 0; | |
357 | sas_address->low = 0; | |
358 | ||
359 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
e2023b87 DJ |
360 | if (sci_port->phy_table[index] != NULL) { |
361 | scic_sds_phy_get_sas_address(sci_port->phy_table[index], sas_address); | |
6f231dda DW |
362 | } |
363 | } | |
364 | } | |
365 | ||
d7b90fc3 DJ |
366 | /* |
367 | * This function will indicate which protocols are supported by this port. | |
e2023b87 | 368 | * @sci_port: a handle corresponding to the SAS port for which to return the |
6f231dda | 369 | * supported protocols. |
d7b90fc3 DJ |
370 | * @protocols: This parameter specifies a pointer to a data structure |
371 | * which the core will copy the protocol values for the port from the | |
372 | * transmit_identification register. | |
6f231dda | 373 | */ |
d7b90fc3 DJ |
374 | static void |
375 | scic_sds_port_get_protocols(struct scic_sds_port *sci_port, | |
376 | struct scic_phy_proto *protocols) | |
6f231dda DW |
377 | { |
378 | u8 index; | |
379 | ||
d7b90fc3 | 380 | protocols->all = 0; |
6f231dda DW |
381 | |
382 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
e2023b87 | 383 | if (sci_port->phy_table[index] != NULL) { |
d7b90fc3 DJ |
384 | scic_sds_phy_get_protocols(sci_port->phy_table[index], |
385 | protocols); | |
6f231dda DW |
386 | } |
387 | } | |
388 | } | |
389 | ||
d7b90fc3 DJ |
390 | /* |
391 | * This function requests the SAS address for the device directly attached to | |
6f231dda | 392 | * this SAS port. |
e2023b87 | 393 | * @sci_port: a handle corresponding to the SAS port for which to return the |
6f231dda DW |
394 | * SAS address. |
395 | * @sas_address: This parameter specifies a pointer to a SAS address structure | |
396 | * into which the core will copy the SAS address for the device directly | |
397 | * attached to the port. | |
398 | * | |
399 | */ | |
400 | void scic_sds_port_get_attached_sas_address( | |
e2023b87 | 401 | struct scic_sds_port *sci_port, |
6f231dda DW |
402 | struct sci_sas_address *sas_address) |
403 | { | |
d7b90fc3 | 404 | struct scic_sds_phy *sci_phy; |
6f231dda DW |
405 | |
406 | /* | |
407 | * Ensure that the phy is both part of the port and currently | |
d7b90fc3 DJ |
408 | * connected to the remote end-point. |
409 | */ | |
410 | sci_phy = scic_sds_port_get_a_connected_phy(sci_port); | |
411 | if (sci_phy) { | |
412 | if (sci_phy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA) { | |
413 | scic_sds_phy_get_attached_sas_address(sci_phy, | |
414 | sas_address); | |
6f231dda | 415 | } else { |
d7b90fc3 DJ |
416 | scic_sds_phy_get_sas_address(sci_phy, sas_address); |
417 | sas_address->low += sci_phy->phy_index; | |
6f231dda DW |
418 | } |
419 | } else { | |
420 | sas_address->high = 0; | |
421 | sas_address->low = 0; | |
422 | } | |
423 | } | |
424 | ||
6f231dda | 425 | /** |
a8d4b9fe | 426 | * scic_sds_port_construct_dummy_rnc() - create dummy rnc for si workaround |
6f231dda | 427 | * |
a8d4b9fe TC |
428 | * @sci_port: logical port on which we need to create the remote node context |
429 | * @rni: remote node index for this remote node context. | |
6f231dda | 430 | * |
a8d4b9fe TC |
431 | * This routine will construct a dummy remote node context data structure |
432 | * This structure will be posted to the hardware to work around a scheduler | |
433 | * error in the hardware. | |
6f231dda | 434 | */ |
35173d57 | 435 | static void scic_sds_port_construct_dummy_rnc(struct scic_sds_port *sci_port, u16 rni) |
a8d4b9fe TC |
436 | { |
437 | union scu_remote_node_context *rnc; | |
6f231dda | 438 | |
a8d4b9fe TC |
439 | rnc = &sci_port->owning_controller->remote_node_context_table[rni]; |
440 | ||
441 | memset(rnc, 0, sizeof(union scu_remote_node_context)); | |
442 | ||
443 | rnc->ssp.remote_sas_address_hi = 0; | |
444 | rnc->ssp.remote_sas_address_lo = 0; | |
445 | ||
446 | rnc->ssp.remote_node_index = rni; | |
447 | rnc->ssp.remote_node_port_width = 1; | |
448 | rnc->ssp.logical_port_index = sci_port->physical_port_index; | |
449 | ||
450 | rnc->ssp.nexus_loss_timer_enable = false; | |
451 | rnc->ssp.check_bit = false; | |
452 | rnc->ssp.is_valid = true; | |
453 | rnc->ssp.is_remote_node_context = true; | |
454 | rnc->ssp.function_number = 0; | |
455 | rnc->ssp.arbitration_wait_time = 0; | |
456 | } | |
6f231dda DW |
457 | |
458 | /** | |
a8d4b9fe TC |
459 | * scic_sds_port_construct_dummy_task() - create dummy task for si workaround |
460 | * @sci_port The logical port on which we need to create the | |
461 | * remote node context. | |
462 | * context. | |
463 | * @tci The remote node index for this remote node context. | |
6f231dda | 464 | * |
a8d4b9fe TC |
465 | * This routine will construct a dummy task context data structure. This |
466 | * structure will be posted to the hardwre to work around a scheduler error | |
467 | * in the hardware. | |
6f231dda DW |
468 | * |
469 | */ | |
35173d57 | 470 | static void scic_sds_port_construct_dummy_task(struct scic_sds_port *sci_port, u16 tci) |
a8d4b9fe TC |
471 | { |
472 | struct scu_task_context *task_context; | |
473 | ||
474 | task_context = scic_sds_controller_get_task_context_buffer(sci_port->owning_controller, tci); | |
475 | ||
476 | memset(task_context, 0, sizeof(struct scu_task_context)); | |
477 | ||
478 | task_context->abort = 0; | |
479 | task_context->priority = 0; | |
480 | task_context->initiator_request = 1; | |
481 | task_context->connection_rate = 1; | |
482 | task_context->protocol_engine_index = 0; | |
483 | task_context->logical_port_index = sci_port->physical_port_index; | |
484 | task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP; | |
485 | task_context->task_index = scic_sds_io_tag_get_index(tci); | |
486 | task_context->valid = SCU_TASK_CONTEXT_VALID; | |
487 | task_context->context_type = SCU_TASK_CONTEXT_TYPE; | |
488 | ||
489 | task_context->remote_node_index = sci_port->reserved_rni; | |
490 | task_context->command_code = 0; | |
491 | ||
492 | task_context->link_layer_control = 0; | |
493 | task_context->do_not_dma_ssp_good_response = 1; | |
494 | task_context->strict_ordering = 0; | |
495 | task_context->control_frame = 0; | |
496 | task_context->timeout_enable = 0; | |
497 | task_context->block_guard_enable = 0; | |
498 | ||
499 | task_context->address_modifier = 0; | |
500 | ||
501 | task_context->task_phase = 0x01; | |
502 | } | |
503 | ||
35173d57 | 504 | static void scic_sds_port_destroy_dummy_resources(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
505 | { |
506 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
507 | ||
508 | if (sci_port->reserved_tci != SCU_DUMMY_INDEX) | |
509 | scic_controller_free_io_tag(scic, sci_port->reserved_tci); | |
510 | ||
511 | if (sci_port->reserved_rni != SCU_DUMMY_INDEX) | |
512 | scic_sds_remote_node_table_release_remote_node_index(&scic->available_remote_nodes, | |
513 | 1, sci_port->reserved_rni); | |
514 | ||
515 | sci_port->reserved_rni = SCU_DUMMY_INDEX; | |
516 | sci_port->reserved_tci = SCU_DUMMY_INDEX; | |
517 | } | |
518 | ||
6f231dda DW |
519 | /** |
520 | * This method performs initialization of the supplied port. Initialization | |
521 | * includes: - state machine initialization - member variable initialization | |
522 | * - configuring the phy_mask | |
e2023b87 | 523 | * @sci_port: |
6f231dda DW |
524 | * @transport_layer_registers: |
525 | * @port_task_scheduler_registers: | |
526 | * @port_configuration_regsiter: | |
527 | * | |
528 | * enum sci_status SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION This value is returned | |
529 | * if the phy being added to the port | |
530 | */ | |
531 | enum sci_status scic_sds_port_initialize( | |
e2023b87 | 532 | struct scic_sds_port *sci_port, |
24621466 HD |
533 | void __iomem *port_task_scheduler_registers, |
534 | void __iomem *port_configuration_regsiter, | |
535 | void __iomem *viit_registers) | |
6f231dda | 536 | { |
e2023b87 DJ |
537 | sci_port->port_task_scheduler_registers = port_task_scheduler_registers; |
538 | sci_port->port_pe_configuration_register = port_configuration_regsiter; | |
539 | sci_port->viit_registers = viit_registers; | |
6f231dda | 540 | |
6f231dda DW |
541 | return SCI_SUCCESS; |
542 | } | |
543 | ||
544 | /** | |
35173d57 DW |
545 | * scic_port_get_properties() - This method simply returns the properties |
546 | * regarding the port, such as: physical index, protocols, sas address, etc. | |
547 | * @port: this parameter specifies the port for which to retrieve the physical | |
548 | * index. | |
549 | * @properties: This parameter specifies the properties structure into which to | |
550 | * copy the requested information. | |
6f231dda | 551 | * |
35173d57 DW |
552 | * Indicate if the user specified a valid port. SCI_SUCCESS This value is |
553 | * returned if the specified port was valid. SCI_FAILURE_INVALID_PORT This | |
554 | * value is returned if the specified port is not valid. When this value is | |
555 | * returned, no data is copied to the properties output parameter. | |
6f231dda | 556 | */ |
6f231dda DW |
557 | enum sci_status scic_port_get_properties( |
558 | struct scic_sds_port *port, | |
559 | struct scic_port_properties *prop) | |
560 | { | |
a7e536c7 | 561 | if ((port == NULL) || |
6f231dda DW |
562 | (port->logical_port_index == SCIC_SDS_DUMMY_PORT)) |
563 | return SCI_FAILURE_INVALID_PORT; | |
564 | ||
565 | prop->index = port->logical_port_index; | |
566 | prop->phy_mask = scic_sds_port_get_phys(port); | |
567 | scic_sds_port_get_sas_address(port, &prop->local.sas_address); | |
568 | scic_sds_port_get_protocols(port, &prop->local.protocols); | |
569 | scic_sds_port_get_attached_sas_address(port, &prop->remote.sas_address); | |
6f231dda DW |
570 | |
571 | return SCI_SUCCESS; | |
572 | } | |
573 | ||
35173d57 | 574 | /** |
de728b7d | 575 | * scic_port_hard_reset() - perform port hard reset |
35173d57 DW |
576 | * @port: a handle corresponding to the SAS port to be hard reset. |
577 | * @reset_timeout: This parameter specifies the number of milliseconds in which | |
578 | * the port reset operation should complete. | |
579 | * | |
de728b7d | 580 | * The SCI User callback in scic_user_callbacks_t will only be called once for |
35173d57 DW |
581 | * each phy in the SAS Port at completion of the hard reset sequence. Return a |
582 | * status indicating whether the hard reset started successfully. SCI_SUCCESS | |
583 | * This value is returned if the hard reset operation started successfully. | |
584 | */ | |
6f231dda DW |
585 | enum sci_status scic_port_hard_reset( |
586 | struct scic_sds_port *port, | |
587 | u32 reset_timeout) | |
588 | { | |
41e2b905 MT |
589 | return port->state_handlers->reset_handler( |
590 | port, reset_timeout); | |
6f231dda DW |
591 | } |
592 | ||
593 | /** | |
6f231dda | 594 | * This method assigns the direct attached device ID for this port. |
24621466 | 595 | * |
e2023b87 | 596 | * @param[in] sci_port The port for which the direct attached device id is to |
24621466 HD |
597 | * be assigned. |
598 | * @param[in] device_id The direct attached device ID to assign to the port. | |
599 | * This will be the RNi for the device | |
6f231dda | 600 | */ |
24621466 | 601 | void scic_sds_port_setup_transports( |
e2023b87 | 602 | struct scic_sds_port *sci_port, |
6f231dda DW |
603 | u32 device_id) |
604 | { | |
24621466 | 605 | u8 index; |
6f231dda | 606 | |
24621466 | 607 | for (index = 0; index < SCI_MAX_PHYS; index++) { |
e2023b87 DJ |
608 | if (sci_port->active_phy_mask & (1 << index)) |
609 | scic_sds_phy_setup_transport(sci_port->phy_table[index], device_id); | |
24621466 | 610 | } |
6f231dda DW |
611 | } |
612 | ||
6f231dda DW |
613 | /** |
614 | * | |
e2023b87 DJ |
615 | * @sci_port: This is the port on which the phy should be enabled. |
616 | * @sci_phy: This is the specific phy which to enable. | |
6f231dda DW |
617 | * @do_notify_user: This parameter specifies whether to inform the user (via |
618 | * scic_cb_port_link_up()) as to the fact that a new phy as become ready. | |
619 | * | |
09d7da13 DJ |
620 | * This function will activate the phy in the port. |
621 | * Activation includes: - adding | |
6f231dda DW |
622 | * the phy to the port - enabling the Protocol Engine in the silicon. - |
623 | * notifying the user that the link is up. none | |
624 | */ | |
35173d57 DW |
625 | static void scic_sds_port_activate_phy(struct scic_sds_port *sci_port, |
626 | struct scic_sds_phy *sci_phy, | |
627 | bool do_notify_user) | |
6f231dda | 628 | { |
d7b90fc3 | 629 | struct scic_sds_controller *scic = sci_port->owning_controller; |
d3757c3a | 630 | struct isci_host *ihost = scic->ihost; |
6f231dda | 631 | |
d7b90fc3 | 632 | if (sci_phy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA) |
09d7da13 | 633 | scic_sds_phy_resume(sci_phy); |
6f231dda | 634 | |
09d7da13 | 635 | sci_port->active_phy_mask |= 1 << sci_phy->phy_index; |
6f231dda | 636 | |
09d7da13 | 637 | scic_sds_controller_clear_invalid_phy(scic, sci_phy); |
6f231dda DW |
638 | |
639 | if (do_notify_user == true) | |
09d7da13 | 640 | isci_port_link_up(ihost, sci_port, sci_phy); |
6f231dda DW |
641 | } |
642 | ||
09d7da13 DJ |
643 | void scic_sds_port_deactivate_phy(struct scic_sds_port *sci_port, |
644 | struct scic_sds_phy *sci_phy, | |
645 | bool do_notify_user) | |
6f231dda | 646 | { |
35173d57 | 647 | struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port); |
115bd1f9 | 648 | struct isci_port *iport = sci_port->iport; |
d3757c3a | 649 | struct isci_host *ihost = scic->ihost; |
e1e72a00 | 650 | struct isci_phy *iphy = sci_phy->iphy; |
09d7da13 DJ |
651 | |
652 | sci_port->active_phy_mask &= ~(1 << sci_phy->phy_index); | |
6f231dda | 653 | |
26bace34 | 654 | sci_phy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN; |
6f231dda DW |
655 | |
656 | /* Re-assign the phy back to the LP as if it were a narrow port */ | |
bc99aa47 CH |
657 | writel(sci_phy->phy_index, |
658 | &sci_port->port_pe_configuration_register[sci_phy->phy_index]); | |
6f231dda DW |
659 | |
660 | if (do_notify_user == true) | |
09d7da13 | 661 | isci_port_link_down(ihost, iphy, iport); |
6f231dda DW |
662 | } |
663 | ||
664 | /** | |
665 | * | |
e2023b87 DJ |
666 | * @sci_port: This is the port on which the phy should be disabled. |
667 | * @sci_phy: This is the specific phy which to disabled. | |
6f231dda | 668 | * |
09d7da13 | 669 | * This function will disable the phy and report that the phy is not valid for |
6f231dda DW |
670 | * this port object. None |
671 | */ | |
672 | static void scic_sds_port_invalid_link_up( | |
09d7da13 DJ |
673 | struct scic_sds_port *sci_port, |
674 | struct scic_sds_phy *sci_phy) | |
6f231dda | 675 | { |
09d7da13 DJ |
676 | struct scic_sds_controller *scic = |
677 | scic_sds_port_get_controller(sci_port); | |
6f231dda DW |
678 | |
679 | /* | |
09d7da13 DJ |
680 | * Check to see if we have alreay reported this link as bad and if |
681 | * not go ahead and tell the SCI_USER that we have discovered an | |
682 | * invalid link. | |
683 | */ | |
684 | if ((scic->invalid_phy_mask & (1 << sci_phy->phy_index)) == 0) { | |
685 | scic_sds_controller_set_invalid_phy(scic, sci_phy); | |
686 | isci_port_invalid_link_up(scic, sci_port, sci_phy); | |
6f231dda DW |
687 | } |
688 | } | |
689 | ||
35173d57 DW |
690 | /** |
691 | * scic_sds_port_general_link_up_handler - phy can be assigned to port? | |
692 | * @sci_port: scic_sds_port object for which has a phy that has gone link up. | |
693 | * @sci_phy: This is the struct scic_sds_phy object that has gone link up. | |
694 | * @do_notify_user: This parameter specifies whether to inform the user (via | |
695 | * scic_cb_port_link_up()) as to the fact that a new phy as become ready. | |
696 | * | |
697 | * Determine if this phy can be assigned to this | |
698 | * port . If the phy is not a valid PHY for | |
699 | * this port then the function will notify the user. A PHY can only be | |
700 | * part of a port if it's attached SAS ADDRESS is the same as all other PHYs in | |
701 | * the same port. none | |
702 | */ | |
703 | static void scic_sds_port_general_link_up_handler(struct scic_sds_port *sci_port, | |
704 | struct scic_sds_phy *sci_phy, | |
705 | bool do_notify_user) | |
706 | { | |
707 | struct sci_sas_address port_sas_address; | |
708 | struct sci_sas_address phy_sas_address; | |
709 | ||
710 | scic_sds_port_get_attached_sas_address(sci_port, &port_sas_address); | |
711 | scic_sds_phy_get_attached_sas_address(sci_phy, &phy_sas_address); | |
712 | ||
713 | /* If the SAS address of the new phy matches the SAS address of | |
714 | * other phys in the port OR this is the first phy in the port, | |
715 | * then activate the phy and allow it to be used for operations | |
716 | * in this port. | |
717 | */ | |
718 | if ((phy_sas_address.high == port_sas_address.high && | |
719 | phy_sas_address.low == port_sas_address.low) || | |
720 | sci_port->active_phy_mask == 0) { | |
41e2b905 | 721 | struct sci_base_state_machine *sm = &sci_port->state_machine; |
35173d57 DW |
722 | |
723 | scic_sds_port_activate_phy(sci_port, sci_phy, do_notify_user); | |
724 | if (sm->current_state_id == SCI_BASE_PORT_STATE_RESETTING) | |
725 | sci_base_state_machine_change_state(sm, SCI_BASE_PORT_STATE_READY); | |
726 | } else | |
727 | scic_sds_port_invalid_link_up(sci_port, sci_phy); | |
728 | } | |
729 | ||
730 | ||
731 | ||
6f231dda DW |
732 | /** |
733 | * This method returns false if the port only has a single phy object assigned. | |
734 | * If there are no phys or more than one phy then the method will return | |
735 | * true. | |
e2023b87 | 736 | * @sci_port: The port for which the wide port condition is to be checked. |
6f231dda DW |
737 | * |
738 | * bool true Is returned if this is a wide ported port. false Is returned if | |
739 | * this is a narrow port. | |
740 | */ | |
e2023b87 | 741 | static bool scic_sds_port_is_wide(struct scic_sds_port *sci_port) |
6f231dda DW |
742 | { |
743 | u32 index; | |
744 | u32 phy_count = 0; | |
745 | ||
746 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
e2023b87 | 747 | if (sci_port->phy_table[index] != NULL) { |
6f231dda DW |
748 | phy_count++; |
749 | } | |
750 | } | |
751 | ||
752 | return phy_count != 1; | |
753 | } | |
754 | ||
755 | /** | |
756 | * This method is called by the PHY object when the link is detected. if the | |
757 | * port wants the PHY to continue on to the link up state then the port | |
758 | * layer must return true. If the port object returns false the phy object | |
759 | * must halt its attempt to go link up. | |
e2023b87 DJ |
760 | * @sci_port: The port associated with the phy object. |
761 | * @sci_phy: The phy object that is trying to go link up. | |
6f231dda DW |
762 | * |
763 | * true if the phy object can continue to the link up condition. true Is | |
764 | * returned if this phy can continue to the ready state. false Is returned if | |
765 | * can not continue on to the ready state. This notification is in place for | |
766 | * wide ports and direct attached phys. Since there are no wide ported SATA | |
767 | * devices this could become an invalid port configuration. | |
768 | */ | |
769 | bool scic_sds_port_link_detected( | |
e2023b87 DJ |
770 | struct scic_sds_port *sci_port, |
771 | struct scic_sds_phy *sci_phy) | |
6f231dda | 772 | { |
d7b90fc3 DJ |
773 | if ((sci_port->logical_port_index != SCIC_SDS_DUMMY_PORT) && |
774 | (sci_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) && | |
775 | scic_sds_port_is_wide(sci_port)) { | |
e2023b87 | 776 | scic_sds_port_invalid_link_up(sci_port, sci_phy); |
6f231dda DW |
777 | |
778 | return false; | |
779 | } | |
780 | ||
781 | return true; | |
782 | } | |
783 | ||
784 | /** | |
785 | * This method is the entry point for the phy to inform the port that it is now | |
786 | * in a ready state | |
e2023b87 | 787 | * @sci_port: |
6f231dda DW |
788 | * |
789 | * | |
790 | */ | |
791 | void scic_sds_port_link_up( | |
e2023b87 DJ |
792 | struct scic_sds_port *sci_port, |
793 | struct scic_sds_phy *sci_phy) | |
6f231dda | 794 | { |
e2023b87 | 795 | sci_phy->is_in_link_training = false; |
6f231dda | 796 | |
e2023b87 | 797 | sci_port->state_handlers->link_up_handler(sci_port, sci_phy); |
6f231dda DW |
798 | } |
799 | ||
800 | /** | |
801 | * This method is the entry point for the phy to inform the port that it is no | |
802 | * longer in a ready state | |
e2023b87 | 803 | * @sci_port: |
6f231dda DW |
804 | * |
805 | * | |
806 | */ | |
807 | void scic_sds_port_link_down( | |
e2023b87 DJ |
808 | struct scic_sds_port *sci_port, |
809 | struct scic_sds_phy *sci_phy) | |
6f231dda | 810 | { |
e2023b87 | 811 | sci_port->state_handlers->link_down_handler(sci_port, sci_phy); |
6f231dda DW |
812 | } |
813 | ||
814 | /** | |
815 | * This method is called to start an IO request on this port. | |
e2023b87 DJ |
816 | * @sci_port: |
817 | * @sci_dev: | |
818 | * @sci_req: | |
6f231dda DW |
819 | * |
820 | * enum sci_status | |
821 | */ | |
822 | enum sci_status scic_sds_port_start_io( | |
e2023b87 DJ |
823 | struct scic_sds_port *sci_port, |
824 | struct scic_sds_remote_device *sci_dev, | |
825 | struct scic_sds_request *sci_req) | |
6f231dda | 826 | { |
e2023b87 DJ |
827 | return sci_port->state_handlers->start_io_handler( |
828 | sci_port, sci_dev, sci_req); | |
6f231dda DW |
829 | } |
830 | ||
831 | /** | |
832 | * This method is called to complete an IO request to the port. | |
e2023b87 DJ |
833 | * @sci_port: |
834 | * @sci_dev: | |
835 | * @sci_req: | |
6f231dda DW |
836 | * |
837 | * enum sci_status | |
838 | */ | |
839 | enum sci_status scic_sds_port_complete_io( | |
e2023b87 DJ |
840 | struct scic_sds_port *sci_port, |
841 | struct scic_sds_remote_device *sci_dev, | |
842 | struct scic_sds_request *sci_req) | |
6f231dda | 843 | { |
e2023b87 DJ |
844 | return sci_port->state_handlers->complete_io_handler( |
845 | sci_port, sci_dev, sci_req); | |
6f231dda DW |
846 | } |
847 | ||
848 | /** | |
849 | * This method is provided to timeout requests for port operations. Mostly its | |
850 | * for the port reset operation. | |
851 | * | |
852 | * | |
853 | */ | |
854 | static void scic_sds_port_timeout_handler(void *port) | |
855 | { | |
09d7da13 | 856 | struct scic_sds_port *sci_port = port; |
6f231dda DW |
857 | u32 current_state; |
858 | ||
859 | current_state = sci_base_state_machine_get_state( | |
41e2b905 | 860 | &sci_port->state_machine); |
6f231dda DW |
861 | |
862 | if (current_state == SCI_BASE_PORT_STATE_RESETTING) { | |
863 | /* | |
09d7da13 DJ |
864 | * if the port is still in the resetting state then the |
865 | * timeout fired before the reset completed. | |
866 | */ | |
6f231dda | 867 | sci_base_state_machine_change_state( |
41e2b905 | 868 | &sci_port->state_machine, |
09d7da13 | 869 | SCI_BASE_PORT_STATE_FAILED); |
6f231dda DW |
870 | } else if (current_state == SCI_BASE_PORT_STATE_STOPPED) { |
871 | /* | |
872 | * if the port is stopped then the start request failed | |
09d7da13 DJ |
873 | * In this case stay in the stopped state. |
874 | */ | |
875 | dev_err(sciport_to_dev(sci_port), | |
6f231dda DW |
876 | "%s: SCIC Port 0x%p failed to stop before tiemout.\n", |
877 | __func__, | |
09d7da13 | 878 | sci_port); |
6f231dda | 879 | } else if (current_state == SCI_BASE_PORT_STATE_STOPPING) { |
09d7da13 DJ |
880 | /* |
881 | * if the port is still stopping then the stop has not | |
882 | * completed | |
883 | */ | |
884 | isci_port_stop_complete( | |
885 | scic_sds_port_get_controller(sci_port), | |
886 | sci_port, | |
887 | SCI_FAILURE_TIMEOUT); | |
6f231dda DW |
888 | } else { |
889 | /* | |
09d7da13 DJ |
890 | * The port is in the ready state and we have a timer |
891 | * reporting a timeout this should not happen. | |
892 | */ | |
893 | dev_err(sciport_to_dev(sci_port), | |
6f231dda DW |
894 | "%s: SCIC Port 0x%p is processing a timeout operation " |
895 | "in state %d.\n", | |
896 | __func__, | |
09d7da13 | 897 | sci_port, |
6f231dda DW |
898 | current_state); |
899 | } | |
900 | } | |
901 | ||
902 | /* --------------------------------------------------------------------------- */ | |
903 | ||
6f231dda DW |
904 | /** |
905 | * This function updates the hardwares VIIT entry for this port. | |
906 | * | |
907 | * | |
908 | */ | |
e2023b87 | 909 | static void scic_sds_port_update_viit_entry(struct scic_sds_port *sci_port) |
6f231dda DW |
910 | { |
911 | struct sci_sas_address sas_address; | |
912 | ||
e2023b87 | 913 | scic_sds_port_get_sas_address(sci_port, &sas_address); |
6f231dda | 914 | |
bc99aa47 | 915 | writel(sas_address.high, |
e2023b87 | 916 | &sci_port->viit_registers->initiator_sas_address_hi); |
bc99aa47 | 917 | writel(sas_address.low, |
e2023b87 | 918 | &sci_port->viit_registers->initiator_sas_address_lo); |
6f231dda DW |
919 | |
920 | /* This value get cleared just in case its not already cleared */ | |
e2023b87 | 921 | writel(0, &sci_port->viit_registers->reserved); |
6f231dda DW |
922 | |
923 | /* We are required to update the status register last */ | |
bc99aa47 CH |
924 | writel(SCU_VIIT_ENTRY_ID_VIIT | |
925 | SCU_VIIT_IPPT_INITIATOR | | |
e2023b87 | 926 | ((1 << sci_port->physical_port_index) << SCU_VIIT_ENTRY_LPVIE_SHIFT) | |
bc99aa47 | 927 | SCU_VIIT_STATUS_ALL_VALID, |
e2023b87 | 928 | &sci_port->viit_registers->status); |
6f231dda DW |
929 | } |
930 | ||
931 | /** | |
932 | * This method returns the maximum allowed speed for data transfers on this | |
933 | * port. This maximum allowed speed evaluates to the maximum speed of the | |
934 | * slowest phy in the port. | |
e2023b87 | 935 | * @sci_port: This parameter specifies the port for which to retrieve the |
6f231dda DW |
936 | * maximum allowed speed. |
937 | * | |
938 | * This method returns the maximum negotiated speed of the slowest phy in the | |
939 | * port. | |
940 | */ | |
26bace34 | 941 | enum sas_linkrate scic_sds_port_get_max_allowed_speed( |
e2023b87 | 942 | struct scic_sds_port *sci_port) |
6f231dda | 943 | { |
26bace34 DW |
944 | u16 index; |
945 | enum sas_linkrate max_allowed_speed = SAS_LINK_RATE_6_0_GBPS; | |
946 | struct scic_sds_phy *phy = NULL; | |
6f231dda DW |
947 | |
948 | /* | |
949 | * Loop through all of the phys in this port and find the phy with the | |
950 | * lowest maximum link rate. */ | |
951 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
e2023b87 | 952 | phy = sci_port->phy_table[index]; |
6f231dda DW |
953 | if ( |
954 | (phy != NULL) | |
e2023b87 | 955 | && (scic_sds_port_active_phy(sci_port, phy) == true) |
6f231dda DW |
956 | && (phy->max_negotiated_speed < max_allowed_speed) |
957 | ) | |
958 | max_allowed_speed = phy->max_negotiated_speed; | |
959 | } | |
960 | ||
961 | return max_allowed_speed; | |
962 | } | |
963 | ||
964 | ||
965 | /** | |
966 | * This method passes the event to core user. | |
e2023b87 DJ |
967 | * @sci_port: The port that a BCN happens. |
968 | * @sci_phy: The phy that receives BCN. | |
6f231dda DW |
969 | * |
970 | */ | |
971 | void scic_sds_port_broadcast_change_received( | |
09d7da13 DJ |
972 | struct scic_sds_port *sci_port, |
973 | struct scic_sds_phy *sci_phy) | |
6f231dda | 974 | { |
09d7da13 | 975 | struct scic_sds_controller *scic = sci_port->owning_controller; |
d3757c3a | 976 | struct isci_host *ihost = scic->ihost; |
09d7da13 | 977 | |
6f231dda | 978 | /* notify the user. */ |
09d7da13 | 979 | isci_port_bc_change_received(ihost, sci_port, sci_phy); |
6f231dda DW |
980 | } |
981 | ||
982 | ||
983 | /** | |
984 | * This API methhod enables the broadcast change notification from underneath | |
985 | * hardware. | |
e2023b87 | 986 | * @sci_port: The port that a BCN had been disabled from. |
6f231dda DW |
987 | * |
988 | */ | |
989 | void scic_port_enable_broadcast_change_notification( | |
990 | struct scic_sds_port *port) | |
991 | { | |
992 | struct scic_sds_phy *phy; | |
993 | u32 register_value; | |
994 | u8 index; | |
995 | ||
996 | /* Loop through all of the phys to enable BCN. */ | |
997 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
998 | phy = port->phy_table[index]; | |
999 | if (phy != NULL) { | |
bc99aa47 CH |
1000 | register_value = |
1001 | readl(&phy->link_layer_registers->link_layer_control); | |
6f231dda DW |
1002 | |
1003 | /* clear the bit by writing 1. */ | |
bc99aa47 CH |
1004 | writel(register_value, |
1005 | &phy->link_layer_registers->link_layer_control); | |
6f231dda DW |
1006 | } |
1007 | } | |
1008 | } | |
1009 | ||
1010 | /* | |
1011 | * **************************************************************************** | |
1012 | * * READY SUBSTATE HANDLERS | |
1013 | * **************************************************************************** */ | |
1014 | ||
41e2b905 | 1015 | /* |
6f231dda DW |
1016 | * This method is the general ready state stop handler for the struct scic_sds_port |
1017 | * object. This function will transition the ready substate machine to its | |
1018 | * final state. enum sci_status SCI_SUCCESS | |
1019 | */ | |
1020 | static enum sci_status scic_sds_port_ready_substate_stop_handler( | |
41e2b905 | 1021 | struct scic_sds_port *port) |
6f231dda | 1022 | { |
6f231dda | 1023 | sci_base_state_machine_change_state( |
41e2b905 | 1024 | &port->state_machine, |
6f231dda DW |
1025 | SCI_BASE_PORT_STATE_STOPPING |
1026 | ); | |
1027 | ||
1028 | return SCI_SUCCESS; | |
1029 | } | |
1030 | ||
38aa74eb | 1031 | /* |
6f231dda DW |
1032 | * This method is the general ready substate complete io handler for the |
1033 | * struct scic_sds_port object. This function decrments the outstanding request count | |
1034 | * for this port object. enum sci_status SCI_SUCCESS | |
1035 | */ | |
1036 | static enum sci_status scic_sds_port_ready_substate_complete_io_handler( | |
1037 | struct scic_sds_port *port, | |
1038 | struct scic_sds_remote_device *device, | |
1039 | struct scic_sds_request *io_request) | |
1040 | { | |
41e2b905 | 1041 | scic_sds_port_decrement_request_count(port); |
6f231dda DW |
1042 | |
1043 | return SCI_SUCCESS; | |
1044 | } | |
1045 | ||
1046 | static enum sci_status scic_sds_port_ready_substate_add_phy_handler( | |
41e2b905 | 1047 | struct scic_sds_port *port, |
d857d9a0 | 1048 | struct scic_sds_phy *phy) |
6f231dda | 1049 | { |
6f231dda DW |
1050 | enum sci_status status; |
1051 | ||
d857d9a0 | 1052 | status = scic_sds_port_set_phy(port, phy); |
6f231dda DW |
1053 | |
1054 | if (status == SCI_SUCCESS) { | |
d857d9a0 | 1055 | scic_sds_port_general_link_up_handler(port, phy, true); |
6f231dda | 1056 | |
41e2b905 | 1057 | port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING; |
6f231dda DW |
1058 | |
1059 | sci_base_state_machine_change_state( | |
41e2b905 | 1060 | &port->ready_substate_machine, |
6f231dda DW |
1061 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING |
1062 | ); | |
1063 | } | |
1064 | ||
1065 | return status; | |
1066 | } | |
1067 | ||
1068 | ||
1069 | static enum sci_status scic_sds_port_ready_substate_remove_phy_handler( | |
41e2b905 | 1070 | struct scic_sds_port *port, |
d857d9a0 | 1071 | struct scic_sds_phy *phy) |
6f231dda | 1072 | { |
6f231dda DW |
1073 | enum sci_status status; |
1074 | ||
d857d9a0 | 1075 | status = scic_sds_port_clear_phy(port, phy); |
6f231dda DW |
1076 | |
1077 | if (status == SCI_SUCCESS) { | |
d857d9a0 | 1078 | scic_sds_port_deactivate_phy(port, phy, true); |
6f231dda | 1079 | |
41e2b905 | 1080 | port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING; |
6f231dda DW |
1081 | |
1082 | sci_base_state_machine_change_state( | |
41e2b905 | 1083 | &port->ready_substate_machine, |
6f231dda DW |
1084 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING |
1085 | ); | |
1086 | } | |
1087 | ||
1088 | return status; | |
1089 | } | |
1090 | ||
1091 | /* | |
1092 | * **************************************************************************** | |
1093 | * * READY SUBSTATE WAITING HANDLERS | |
1094 | * **************************************************************************** */ | |
1095 | ||
1096 | /** | |
1097 | * | |
e2023b87 | 1098 | * @sci_port: This is the struct scic_sds_port object that which has a phy that has |
6f231dda | 1099 | * gone link up. |
e2023b87 | 1100 | * @sci_phy: This is the struct scic_sds_phy object that has gone link up. |
6f231dda DW |
1101 | * |
1102 | * This method is the ready waiting substate link up handler for the | |
1103 | * struct scic_sds_port object. This methos will report the link up condition for | |
1104 | * this port and will transition to the ready operational substate. none | |
1105 | */ | |
1106 | static void scic_sds_port_ready_waiting_substate_link_up_handler( | |
e2023b87 DJ |
1107 | struct scic_sds_port *sci_port, |
1108 | struct scic_sds_phy *sci_phy) | |
6f231dda DW |
1109 | { |
1110 | /* | |
1111 | * Since this is the first phy going link up for the port we can just enable | |
1112 | * it and continue. */ | |
e2023b87 | 1113 | scic_sds_port_activate_phy(sci_port, sci_phy, true); |
6f231dda DW |
1114 | |
1115 | sci_base_state_machine_change_state( | |
e2023b87 | 1116 | &sci_port->ready_substate_machine, |
6f231dda DW |
1117 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL |
1118 | ); | |
1119 | } | |
1120 | ||
38aa74eb | 1121 | /* |
6f231dda DW |
1122 | * This method is the ready waiting substate start io handler for the |
1123 | * struct scic_sds_port object. The port object can not accept new requests so the | |
1124 | * request is failed. enum sci_status SCI_FAILURE_INVALID_STATE | |
1125 | */ | |
1126 | static enum sci_status scic_sds_port_ready_waiting_substate_start_io_handler( | |
1127 | struct scic_sds_port *port, | |
1128 | struct scic_sds_remote_device *device, | |
1129 | struct scic_sds_request *io_request) | |
1130 | { | |
1131 | return SCI_FAILURE_INVALID_STATE; | |
1132 | } | |
1133 | ||
1134 | /* | |
1135 | * **************************************************************************** | |
1136 | * * READY SUBSTATE OPERATIONAL HANDLERS | |
1137 | * **************************************************************************** */ | |
1138 | ||
41e2b905 | 1139 | /* |
6f231dda DW |
1140 | * This method will casue the port to reset. enum sci_status SCI_SUCCESS |
1141 | */ | |
09d7da13 DJ |
1142 | static enum |
1143 | sci_status scic_sds_port_ready_operational_substate_reset_handler( | |
41e2b905 | 1144 | struct scic_sds_port *port, |
09d7da13 | 1145 | u32 timeout) |
6f231dda DW |
1146 | { |
1147 | enum sci_status status = SCI_FAILURE_INVALID_PHY; | |
1148 | u32 phy_index; | |
a7e536c7 | 1149 | struct scic_sds_phy *selected_phy = NULL; |
6f231dda DW |
1150 | |
1151 | ||
1152 | /* Select a phy on which we can send the hard reset request. */ | |
09d7da13 DJ |
1153 | for (phy_index = 0; |
1154 | (phy_index < SCI_MAX_PHYS) && (selected_phy == NULL); | |
1155 | phy_index++) { | |
41e2b905 | 1156 | selected_phy = port->phy_table[phy_index]; |
09d7da13 DJ |
1157 | |
1158 | if ((selected_phy != NULL) && | |
41e2b905 | 1159 | !scic_sds_port_active_phy(port, selected_phy)) { |
09d7da13 DJ |
1160 | /* |
1161 | * We found a phy but it is not ready select | |
1162 | * different phy | |
1163 | */ | |
a7e536c7 | 1164 | selected_phy = NULL; |
6f231dda DW |
1165 | } |
1166 | } | |
1167 | ||
1168 | /* If we have a phy then go ahead and start the reset procedure */ | |
a7e536c7 | 1169 | if (selected_phy != NULL) { |
6f231dda DW |
1170 | status = scic_sds_phy_reset(selected_phy); |
1171 | ||
1172 | if (status == SCI_SUCCESS) { | |
41e2b905 MT |
1173 | isci_timer_start(port->timer_handle, timeout); |
1174 | port->not_ready_reason = | |
09d7da13 | 1175 | SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED; |
6f231dda DW |
1176 | |
1177 | sci_base_state_machine_change_state( | |
41e2b905 | 1178 | &port->state_machine, |
09d7da13 | 1179 | SCI_BASE_PORT_STATE_RESETTING); |
6f231dda DW |
1180 | } |
1181 | } | |
1182 | ||
1183 | return status; | |
1184 | } | |
1185 | ||
1186 | /** | |
1187 | * scic_sds_port_ready_operational_substate_link_up_handler() - | |
e2023b87 | 1188 | * @sci_port: This is the struct scic_sds_port object that which has a phy that has |
6f231dda | 1189 | * gone link up. |
e2023b87 | 1190 | * @sci_phy: This is the struct scic_sds_phy object that has gone link up. |
6f231dda DW |
1191 | * |
1192 | * This method is the ready operational substate link up handler for the | |
1193 | * struct scic_sds_port object. This function notifies the SCI User that the phy has | |
1194 | * gone link up. none | |
1195 | */ | |
1196 | static void scic_sds_port_ready_operational_substate_link_up_handler( | |
e2023b87 DJ |
1197 | struct scic_sds_port *sci_port, |
1198 | struct scic_sds_phy *sci_phy) | |
6f231dda | 1199 | { |
e2023b87 | 1200 | scic_sds_port_general_link_up_handler(sci_port, sci_phy, true); |
6f231dda DW |
1201 | } |
1202 | ||
1203 | /** | |
1204 | * scic_sds_port_ready_operational_substate_link_down_handler() - | |
068b2c03 | 1205 | * @sci_port: This is the struct scic_sds_port object that which has a phy that has |
6f231dda | 1206 | * gone link down. |
068b2c03 | 1207 | * @sci_phy: This is the struct scic_sds_phy object that has gone link down. |
6f231dda DW |
1208 | * |
1209 | * This method is the ready operational substate link down handler for the | |
1210 | * struct scic_sds_port object. This function notifies the SCI User that the phy has | |
1211 | * gone link down and if this is the last phy in the port the port will change | |
1212 | * state to the ready waiting substate. none | |
1213 | */ | |
1214 | static void scic_sds_port_ready_operational_substate_link_down_handler( | |
068b2c03 DW |
1215 | struct scic_sds_port *sci_port, |
1216 | struct scic_sds_phy *sci_phy) | |
6f231dda | 1217 | { |
068b2c03 | 1218 | scic_sds_port_deactivate_phy(sci_port, sci_phy, true); |
6f231dda DW |
1219 | |
1220 | /* | |
1221 | * If there are no active phys left in the port, then transition | |
1222 | * the port to the WAITING state until such time as a phy goes | |
1223 | * link up. */ | |
068b2c03 DW |
1224 | if (sci_port->active_phy_mask == 0) |
1225 | sci_base_state_machine_change_state(&sci_port->ready_substate_machine, | |
1226 | SCIC_SDS_PORT_READY_SUBSTATE_WAITING); | |
6f231dda DW |
1227 | } |
1228 | ||
38aa74eb | 1229 | /* |
6f231dda DW |
1230 | * This method is the ready operational substate start io handler for the |
1231 | * struct scic_sds_port object. This function incremetns the outstanding request | |
1232 | * count for this port object. enum sci_status SCI_SUCCESS | |
1233 | */ | |
1234 | static enum sci_status scic_sds_port_ready_operational_substate_start_io_handler( | |
1235 | struct scic_sds_port *port, | |
1236 | struct scic_sds_remote_device *device, | |
1237 | struct scic_sds_request *io_request) | |
1238 | { | |
41e2b905 | 1239 | scic_sds_port_increment_request_count(port); |
6f231dda DW |
1240 | |
1241 | return SCI_SUCCESS; | |
1242 | } | |
1243 | ||
1244 | /* | |
1245 | * **************************************************************************** | |
1246 | * * READY SUBSTATE OPERATIONAL HANDLERS | |
1247 | * **************************************************************************** */ | |
1248 | ||
41e2b905 | 1249 | /* |
6f231dda DW |
1250 | * This is the default method for a port add phy request. It will report a |
1251 | * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE | |
1252 | */ | |
1253 | static enum sci_status scic_sds_port_ready_configuring_substate_add_phy_handler( | |
41e2b905 | 1254 | struct scic_sds_port *port, |
d857d9a0 | 1255 | struct scic_sds_phy *phy) |
6f231dda | 1256 | { |
6f231dda DW |
1257 | enum sci_status status; |
1258 | ||
d857d9a0 | 1259 | status = scic_sds_port_set_phy(port, phy); |
6f231dda DW |
1260 | |
1261 | if (status == SCI_SUCCESS) { | |
d857d9a0 | 1262 | scic_sds_port_general_link_up_handler(port, phy, true); |
6f231dda DW |
1263 | |
1264 | /* | |
1265 | * Re-enter the configuring state since this may be the last phy in | |
1266 | * the port. */ | |
1267 | sci_base_state_machine_change_state( | |
41e2b905 | 1268 | &port->ready_substate_machine, |
6f231dda DW |
1269 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING |
1270 | ); | |
1271 | } | |
1272 | ||
1273 | return status; | |
1274 | } | |
1275 | ||
41e2b905 | 1276 | /* |
6f231dda DW |
1277 | * This is the default method for a port remove phy request. It will report a |
1278 | * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE | |
1279 | */ | |
1280 | static enum sci_status scic_sds_port_ready_configuring_substate_remove_phy_handler( | |
41e2b905 | 1281 | struct scic_sds_port *port, |
d857d9a0 | 1282 | struct scic_sds_phy *phy) |
6f231dda | 1283 | { |
6f231dda DW |
1284 | enum sci_status status; |
1285 | ||
d857d9a0 | 1286 | status = scic_sds_port_clear_phy(port, phy); |
6f231dda DW |
1287 | |
1288 | if (status == SCI_SUCCESS) { | |
d857d9a0 | 1289 | scic_sds_port_deactivate_phy(port, phy, true); |
6f231dda DW |
1290 | |
1291 | /* | |
1292 | * Re-enter the configuring state since this may be the last phy in | |
1293 | * the port. */ | |
1294 | sci_base_state_machine_change_state( | |
41e2b905 | 1295 | &port->ready_substate_machine, |
6f231dda DW |
1296 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING |
1297 | ); | |
1298 | } | |
1299 | ||
1300 | return status; | |
1301 | } | |
1302 | ||
1303 | /** | |
1304 | * scic_sds_port_ready_configuring_substate_complete_io_handler() - | |
1305 | * @port: This is the port that is being requested to complete the io request. | |
1306 | * @device: This is the device on which the io is completing. | |
1307 | * | |
1308 | * This method will decrement the outstanding request count for this port. If | |
1309 | * the request count goes to 0 then the port can be reprogrammed with its new | |
1310 | * phy data. | |
1311 | */ | |
41e2b905 MT |
1312 | static enum sci_status |
1313 | scic_sds_port_ready_configuring_substate_complete_io_handler( | |
6f231dda DW |
1314 | struct scic_sds_port *port, |
1315 | struct scic_sds_remote_device *device, | |
1316 | struct scic_sds_request *io_request) | |
1317 | { | |
1318 | scic_sds_port_decrement_request_count(port); | |
1319 | ||
1320 | if (port->started_request_count == 0) { | |
1321 | sci_base_state_machine_change_state( | |
1322 | &port->ready_substate_machine, | |
1323 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL | |
1324 | ); | |
1325 | } | |
1326 | ||
1327 | return SCI_SUCCESS; | |
1328 | } | |
1329 | ||
41e2b905 MT |
1330 | static enum sci_status default_port_handler(struct scic_sds_port *sci_port, |
1331 | const char *func) | |
35173d57 | 1332 | { |
35173d57 DW |
1333 | dev_warn(sciport_to_dev(sci_port), |
1334 | "%s: in wrong state: %d\n", func, | |
41e2b905 | 1335 | sci_base_state_machine_get_state(&sci_port->state_machine)); |
35173d57 DW |
1336 | return SCI_FAILURE_INVALID_STATE; |
1337 | } | |
1338 | ||
41e2b905 MT |
1339 | static enum sci_status |
1340 | scic_sds_port_default_start_handler(struct scic_sds_port *sci_port) | |
35173d57 | 1341 | { |
41e2b905 | 1342 | return default_port_handler(sci_port, __func__); |
35173d57 DW |
1343 | } |
1344 | ||
41e2b905 MT |
1345 | static enum sci_status |
1346 | scic_sds_port_default_stop_handler(struct scic_sds_port *sci_port) | |
35173d57 | 1347 | { |
41e2b905 | 1348 | return default_port_handler(sci_port, __func__); |
35173d57 DW |
1349 | } |
1350 | ||
41e2b905 MT |
1351 | static enum sci_status |
1352 | scic_sds_port_default_destruct_handler(struct scic_sds_port *sci_port) | |
35173d57 | 1353 | { |
41e2b905 | 1354 | return default_port_handler(sci_port, __func__); |
35173d57 DW |
1355 | } |
1356 | ||
41e2b905 MT |
1357 | static enum sci_status |
1358 | scic_sds_port_default_reset_handler(struct scic_sds_port *sci_port, | |
1359 | u32 timeout) | |
35173d57 | 1360 | { |
41e2b905 | 1361 | return default_port_handler(sci_port, __func__); |
35173d57 DW |
1362 | } |
1363 | ||
41e2b905 MT |
1364 | static enum sci_status |
1365 | scic_sds_port_default_add_phy_handler(struct scic_sds_port *sci_port, | |
d857d9a0 | 1366 | struct scic_sds_phy *base_phy) |
35173d57 | 1367 | { |
41e2b905 | 1368 | return default_port_handler(sci_port, __func__); |
35173d57 DW |
1369 | } |
1370 | ||
41e2b905 MT |
1371 | static enum sci_status |
1372 | scic_sds_port_default_remove_phy_handler(struct scic_sds_port *sci_port, | |
d857d9a0 | 1373 | struct scic_sds_phy *base_phy) |
35173d57 | 1374 | { |
41e2b905 | 1375 | return default_port_handler(sci_port, __func__); |
35173d57 DW |
1376 | } |
1377 | ||
41e2b905 | 1378 | /* |
35173d57 DW |
1379 | * This is the default method for a port unsolicited frame request. It will |
1380 | * report a warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE Is it even | |
1381 | * possible to receive an unsolicited frame directed to a port object? It | |
1382 | * seems possible if we implementing virtual functions but until then? | |
1383 | */ | |
41e2b905 MT |
1384 | static enum sci_status |
1385 | scic_sds_port_default_frame_handler(struct scic_sds_port *sci_port, | |
1386 | u32 frame_index) | |
35173d57 DW |
1387 | { |
1388 | struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port); | |
1389 | ||
41e2b905 | 1390 | default_port_handler(sci_port, __func__); |
35173d57 DW |
1391 | scic_sds_controller_release_frame(scic, frame_index); |
1392 | ||
1393 | return SCI_FAILURE_INVALID_STATE; | |
1394 | } | |
1395 | ||
1396 | static enum sci_status scic_sds_port_default_event_handler(struct scic_sds_port *sci_port, | |
1397 | u32 event_code) | |
1398 | { | |
41e2b905 | 1399 | return default_port_handler(sci_port, __func__); |
35173d57 DW |
1400 | } |
1401 | ||
1402 | static void scic_sds_port_default_link_up_handler(struct scic_sds_port *sci_port, | |
1403 | struct scic_sds_phy *sci_phy) | |
1404 | { | |
41e2b905 | 1405 | default_port_handler(sci_port, __func__); |
35173d57 DW |
1406 | } |
1407 | ||
1408 | static void scic_sds_port_default_link_down_handler(struct scic_sds_port *sci_port, | |
1409 | struct scic_sds_phy *sci_phy) | |
1410 | { | |
41e2b905 | 1411 | default_port_handler(sci_port, __func__); |
35173d57 | 1412 | } |
6f231dda | 1413 | |
35173d57 DW |
1414 | static enum sci_status scic_sds_port_default_start_io_handler(struct scic_sds_port *sci_port, |
1415 | struct scic_sds_remote_device *sci_dev, | |
1416 | struct scic_sds_request *sci_req) | |
1417 | { | |
41e2b905 | 1418 | return default_port_handler(sci_port, __func__); |
35173d57 DW |
1419 | } |
1420 | ||
1421 | static enum sci_status scic_sds_port_default_complete_io_handler(struct scic_sds_port *sci_port, | |
1422 | struct scic_sds_remote_device *sci_dev, | |
1423 | struct scic_sds_request *sci_req) | |
1424 | { | |
41e2b905 | 1425 | return default_port_handler(sci_port, __func__); |
35173d57 DW |
1426 | } |
1427 | ||
1428 | ||
1429 | ||
1430 | static struct scic_sds_port_state_handler | |
41e2b905 | 1431 | scic_sds_port_ready_substate_handler_table[SCIC_SDS_PORT_READY_MAX_SUBSTATES] = { |
6f231dda | 1432 | { |
41e2b905 MT |
1433 | /* SCIC_SDS_PORT_READY_SUBSTATE_WAITING */ |
1434 | scic_sds_port_default_start_handler, | |
1435 | scic_sds_port_ready_substate_stop_handler, | |
1436 | scic_sds_port_default_destruct_handler, | |
1437 | scic_sds_port_default_reset_handler, | |
1438 | scic_sds_port_ready_substate_add_phy_handler, | |
1439 | scic_sds_port_default_remove_phy_handler, | |
6f231dda DW |
1440 | scic_sds_port_default_frame_handler, |
1441 | scic_sds_port_default_event_handler, | |
1442 | scic_sds_port_ready_waiting_substate_link_up_handler, | |
1443 | scic_sds_port_default_link_down_handler, | |
1444 | scic_sds_port_ready_waiting_substate_start_io_handler, | |
1445 | scic_sds_port_ready_substate_complete_io_handler, | |
1446 | }, | |
41e2b905 | 1447 | |
6f231dda | 1448 | { |
41e2b905 MT |
1449 | /* SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL */ |
1450 | scic_sds_port_default_start_handler, | |
1451 | scic_sds_port_ready_substate_stop_handler, | |
1452 | scic_sds_port_default_destruct_handler, | |
1453 | scic_sds_port_ready_operational_substate_reset_handler, | |
1454 | scic_sds_port_ready_substate_add_phy_handler, | |
1455 | scic_sds_port_ready_substate_remove_phy_handler, | |
6f231dda DW |
1456 | scic_sds_port_default_frame_handler, |
1457 | scic_sds_port_default_event_handler, | |
1458 | scic_sds_port_ready_operational_substate_link_up_handler, | |
1459 | scic_sds_port_ready_operational_substate_link_down_handler, | |
1460 | scic_sds_port_ready_operational_substate_start_io_handler, | |
41e2b905 | 1461 | scic_sds_port_ready_substate_complete_io_handler, |
6f231dda | 1462 | }, |
41e2b905 | 1463 | |
6f231dda | 1464 | { |
41e2b905 MT |
1465 | /* SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING */ |
1466 | scic_sds_port_default_start_handler, | |
1467 | scic_sds_port_ready_substate_stop_handler, | |
1468 | scic_sds_port_default_destruct_handler, | |
1469 | scic_sds_port_default_reset_handler, | |
1470 | scic_sds_port_ready_configuring_substate_add_phy_handler, | |
1471 | scic_sds_port_ready_configuring_substate_remove_phy_handler, | |
6f231dda DW |
1472 | scic_sds_port_default_frame_handler, |
1473 | scic_sds_port_default_event_handler, | |
1474 | scic_sds_port_default_link_up_handler, | |
1475 | scic_sds_port_default_link_down_handler, | |
1476 | scic_sds_port_default_start_io_handler, | |
1477 | scic_sds_port_ready_configuring_substate_complete_io_handler | |
1478 | } | |
1479 | }; | |
1480 | ||
6f231dda DW |
1481 | /** |
1482 | * scic_sds_port_set_ready_state_handlers() - | |
1483 | * | |
1484 | * This macro sets the port ready substate handlers. | |
1485 | */ | |
1486 | #define scic_sds_port_set_ready_state_handlers(port, state_id) \ | |
1487 | scic_sds_port_set_state_handlers(\ | |
1488 | port, &scic_sds_port_ready_substate_handler_table[(state_id)] \ | |
1489 | ) | |
1490 | ||
1491 | /* | |
1492 | * ****************************************************************************** | |
1493 | * * PORT STATE PRIVATE METHODS | |
1494 | * ****************************************************************************** */ | |
1495 | ||
1496 | /** | |
1497 | * | |
e2023b87 | 1498 | * @sci_port: This is the struct scic_sds_port object to suspend. |
6f231dda DW |
1499 | * |
1500 | * This method will susped the port task scheduler for this port object. none | |
1501 | */ | |
bc99aa47 CH |
1502 | static void |
1503 | scic_sds_port_suspend_port_task_scheduler(struct scic_sds_port *port) | |
6f231dda DW |
1504 | { |
1505 | u32 pts_control_value; | |
6f231dda | 1506 | |
bc99aa47 | 1507 | pts_control_value = readl(&port->port_task_scheduler_registers->control); |
6f231dda | 1508 | pts_control_value |= SCU_PTSxCR_GEN_BIT(SUSPEND); |
bc99aa47 | 1509 | writel(pts_control_value, &port->port_task_scheduler_registers->control); |
6f231dda DW |
1510 | } |
1511 | ||
a8d4b9fe TC |
1512 | /** |
1513 | * scic_sds_port_post_dummy_request() - post dummy/workaround request | |
1514 | * @sci_port: port to post task | |
1515 | * | |
1516 | * Prevent the hardware scheduler from posting new requests to the front | |
1517 | * of the scheduler queue causing a starvation problem for currently | |
1518 | * ongoing requests. | |
1519 | * | |
1520 | */ | |
35173d57 | 1521 | static void scic_sds_port_post_dummy_request(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
1522 | { |
1523 | u32 command; | |
1524 | struct scu_task_context *task_context; | |
1525 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
1526 | u16 tci = sci_port->reserved_tci; | |
1527 | ||
1528 | task_context = scic_sds_controller_get_task_context_buffer(scic, tci); | |
1529 | ||
1530 | task_context->abort = 0; | |
1531 | ||
1532 | command = SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | | |
1533 | sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | | |
1534 | tci; | |
1535 | ||
1536 | scic_sds_controller_post_request(scic, command); | |
1537 | } | |
1538 | ||
1539 | /** | |
1540 | * This routine will abort the dummy request. This will alow the hardware to | |
1541 | * power down parts of the silicon to save power. | |
1542 | * | |
1543 | * @sci_port: The port on which the task must be aborted. | |
1544 | * | |
1545 | */ | |
35173d57 | 1546 | static void scic_sds_port_abort_dummy_request(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
1547 | { |
1548 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
1549 | u16 tci = sci_port->reserved_tci; | |
1550 | struct scu_task_context *tc; | |
1551 | u32 command; | |
1552 | ||
1553 | tc = scic_sds_controller_get_task_context_buffer(scic, tci); | |
1554 | ||
1555 | tc->abort = 1; | |
1556 | ||
1557 | command = SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT | | |
1558 | sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | | |
1559 | tci; | |
1560 | ||
1561 | scic_sds_controller_post_request(scic, command); | |
1562 | } | |
1563 | ||
6f231dda DW |
1564 | /** |
1565 | * | |
e2023b87 | 1566 | * @sci_port: This is the struct scic_sds_port object to resume. |
6f231dda DW |
1567 | * |
1568 | * This method will resume the port task scheduler for this port object. none | |
1569 | */ | |
bc99aa47 CH |
1570 | static void |
1571 | scic_sds_port_resume_port_task_scheduler(struct scic_sds_port *port) | |
6f231dda DW |
1572 | { |
1573 | u32 pts_control_value; | |
1574 | ||
bc99aa47 | 1575 | pts_control_value = readl(&port->port_task_scheduler_registers->control); |
6f231dda | 1576 | pts_control_value &= ~SCU_PTSxCR_GEN_BIT(SUSPEND); |
bc99aa47 | 1577 | writel(pts_control_value, &port->port_task_scheduler_registers->control); |
6f231dda DW |
1578 | } |
1579 | ||
1580 | /* | |
1581 | * ****************************************************************************** | |
1582 | * * PORT READY SUBSTATE METHODS | |
1583 | * ****************************************************************************** */ | |
1584 | ||
1585 | /** | |
1586 | * | |
9a0fff7b | 1587 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda DW |
1588 | * |
1589 | * This method will perform the actions required by the struct scic_sds_port on | |
1590 | * entering the SCIC_SDS_PORT_READY_SUBSTATE_WAITING. This function checks the | |
1591 | * port for any ready phys. If there is at least one phy in a ready state then | |
1592 | * the port transitions to the ready operational substate. none | |
1593 | */ | |
9a0fff7b | 1594 | static void scic_sds_port_ready_substate_waiting_enter(void *object) |
6f231dda | 1595 | { |
115bd1f9 | 1596 | struct scic_sds_port *sci_port = object; |
6f231dda DW |
1597 | |
1598 | scic_sds_port_set_ready_state_handlers( | |
e2023b87 | 1599 | sci_port, SCIC_SDS_PORT_READY_SUBSTATE_WAITING |
6f231dda DW |
1600 | ); |
1601 | ||
e2023b87 | 1602 | scic_sds_port_suspend_port_task_scheduler(sci_port); |
6f231dda | 1603 | |
e2023b87 | 1604 | sci_port->not_ready_reason = SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS; |
6f231dda | 1605 | |
e2023b87 | 1606 | if (sci_port->active_phy_mask != 0) { |
6f231dda DW |
1607 | /* At least one of the phys on the port is ready */ |
1608 | sci_base_state_machine_change_state( | |
e2023b87 | 1609 | &sci_port->ready_substate_machine, |
6f231dda DW |
1610 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL |
1611 | ); | |
1612 | } | |
1613 | } | |
1614 | ||
1615 | /** | |
1616 | * | |
9a0fff7b | 1617 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda | 1618 | * |
09d7da13 DJ |
1619 | * This function will perform the actions required by the struct scic_sds_port |
1620 | * on entering the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function sets | |
6f231dda DW |
1621 | * the state handlers for the port object, notifies the SCI User that the port |
1622 | * is ready, and resumes port operations. none | |
1623 | */ | |
9a0fff7b | 1624 | static void scic_sds_port_ready_substate_operational_enter(void *object) |
6f231dda DW |
1625 | { |
1626 | u32 index; | |
115bd1f9 | 1627 | struct scic_sds_port *sci_port = object; |
09d7da13 DJ |
1628 | struct scic_sds_controller *scic = |
1629 | scic_sds_port_get_controller(sci_port); | |
d3757c3a | 1630 | struct isci_host *ihost = scic->ihost; |
115bd1f9 | 1631 | struct isci_port *iport = sci_port->iport; |
6f231dda DW |
1632 | |
1633 | scic_sds_port_set_ready_state_handlers( | |
09d7da13 DJ |
1634 | sci_port, |
1635 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL); | |
6f231dda | 1636 | |
09d7da13 | 1637 | isci_port_ready(ihost, iport); |
6f231dda DW |
1638 | |
1639 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
bc99aa47 CH |
1640 | if (sci_port->phy_table[index]) { |
1641 | writel(sci_port->physical_port_index, | |
1642 | &sci_port->port_pe_configuration_register[ | |
1643 | sci_port->phy_table[index]->phy_index]); | |
1644 | } | |
6f231dda DW |
1645 | } |
1646 | ||
09d7da13 | 1647 | scic_sds_port_update_viit_entry(sci_port); |
6f231dda | 1648 | |
09d7da13 | 1649 | scic_sds_port_resume_port_task_scheduler(sci_port); |
a8d4b9fe | 1650 | |
09d7da13 DJ |
1651 | /* |
1652 | * Post the dummy task for the port so the hardware can schedule | |
a8d4b9fe TC |
1653 | * io correctly |
1654 | */ | |
09d7da13 | 1655 | scic_sds_port_post_dummy_request(sci_port); |
6f231dda DW |
1656 | } |
1657 | ||
1658 | /** | |
1659 | * | |
9a0fff7b | 1660 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda DW |
1661 | * |
1662 | * This method will perform the actions required by the struct scic_sds_port on | |
1663 | * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports | |
1664 | * the port not ready and suspends the port task scheduler. none | |
1665 | */ | |
9a0fff7b | 1666 | static void scic_sds_port_ready_substate_operational_exit(void *object) |
6f231dda | 1667 | { |
115bd1f9 | 1668 | struct scic_sds_port *sci_port = object; |
09d7da13 DJ |
1669 | struct scic_sds_controller *scic = |
1670 | scic_sds_port_get_controller(sci_port); | |
d3757c3a | 1671 | struct isci_host *ihost = scic->ihost; |
115bd1f9 | 1672 | struct isci_port *iport = sci_port->iport; |
6f231dda | 1673 | |
09d7da13 DJ |
1674 | /* |
1675 | * Kill the dummy task for this port if it has not yet posted | |
1676 | * the hardware will treat this as a NOP and just return abort | |
1677 | * complete. | |
1678 | */ | |
1679 | scic_sds_port_abort_dummy_request(sci_port); | |
27ce51df | 1680 | |
09d7da13 | 1681 | isci_port_not_ready(ihost, iport); |
6f231dda DW |
1682 | } |
1683 | ||
1684 | /* | |
1685 | * ****************************************************************************** | |
1686 | * * PORT READY CONFIGURING METHODS | |
1687 | * ****************************************************************************** */ | |
1688 | ||
1689 | /** | |
1690 | * scic_sds_port_ready_substate_configuring_enter() - | |
9a0fff7b | 1691 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda DW |
1692 | * |
1693 | * This method will perform the actions required by the struct scic_sds_port on | |
1694 | * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports | |
1695 | * the port not ready and suspends the port task scheduler. none | |
1696 | */ | |
9a0fff7b | 1697 | static void scic_sds_port_ready_substate_configuring_enter(void *object) |
6f231dda | 1698 | { |
115bd1f9 | 1699 | struct scic_sds_port *sci_port = object; |
09d7da13 DJ |
1700 | struct scic_sds_controller *scic = |
1701 | scic_sds_port_get_controller(sci_port); | |
d3757c3a | 1702 | struct isci_host *ihost = scic->ihost; |
115bd1f9 | 1703 | struct isci_port *iport = sci_port->iport; |
6f231dda DW |
1704 | |
1705 | scic_sds_port_set_ready_state_handlers( | |
09d7da13 DJ |
1706 | sci_port, |
1707 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING); | |
6f231dda | 1708 | |
09d7da13 DJ |
1709 | if (sci_port->active_phy_mask == 0) { |
1710 | isci_port_not_ready(ihost, iport); | |
6f231dda DW |
1711 | |
1712 | sci_base_state_machine_change_state( | |
09d7da13 DJ |
1713 | &sci_port->ready_substate_machine, |
1714 | SCIC_SDS_PORT_READY_SUBSTATE_WAITING); | |
1715 | } else if (sci_port->started_request_count == 0) | |
6f231dda | 1716 | sci_base_state_machine_change_state( |
09d7da13 DJ |
1717 | &sci_port->ready_substate_machine, |
1718 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL); | |
6f231dda DW |
1719 | } |
1720 | ||
9a0fff7b | 1721 | static void scic_sds_port_ready_substate_configuring_exit(void *object) |
6f231dda | 1722 | { |
115bd1f9 | 1723 | struct scic_sds_port *sci_port = object; |
6f231dda | 1724 | |
e2023b87 | 1725 | scic_sds_port_suspend_port_task_scheduler(sci_port); |
6f231dda DW |
1726 | } |
1727 | ||
1728 | /* --------------------------------------------------------------------------- */ | |
1729 | ||
35173d57 | 1730 | static const struct sci_base_state scic_sds_port_ready_substate_table[] = { |
6f231dda DW |
1731 | [SCIC_SDS_PORT_READY_SUBSTATE_WAITING] = { |
1732 | .enter_state = scic_sds_port_ready_substate_waiting_enter, | |
1733 | }, | |
1734 | [SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL] = { | |
1735 | .enter_state = scic_sds_port_ready_substate_operational_enter, | |
1736 | .exit_state = scic_sds_port_ready_substate_operational_exit | |
1737 | }, | |
1738 | [SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING] = { | |
1739 | .enter_state = scic_sds_port_ready_substate_configuring_enter, | |
1740 | .exit_state = scic_sds_port_ready_substate_configuring_exit | |
1741 | }, | |
1742 | }; | |
1743 | ||
6f231dda DW |
1744 | /** |
1745 | * | |
1746 | * @port: This is the struct scic_sds_port object on which the io request count will | |
1747 | * be decremented. | |
1748 | * @device: This is the struct scic_sds_remote_device object to which the io request | |
1749 | * is being directed. This parameter is not required to complete this | |
1750 | * operation. | |
1751 | * @io_request: This is the request that is being completed on this port | |
1752 | * object. This parameter is not required to complete this operation. | |
1753 | * | |
1754 | * This is a general complete io request handler for the struct scic_sds_port object. | |
1755 | * enum sci_status SCI_SUCCESS | |
1756 | */ | |
1757 | static enum sci_status scic_sds_port_general_complete_io_handler( | |
1758 | struct scic_sds_port *port, | |
1759 | struct scic_sds_remote_device *device, | |
1760 | struct scic_sds_request *io_request) | |
1761 | { | |
41e2b905 | 1762 | scic_sds_port_decrement_request_count(port); |
6f231dda DW |
1763 | |
1764 | return SCI_SUCCESS; | |
1765 | } | |
1766 | ||
6f231dda | 1767 | /** |
a8d4b9fe | 1768 | * scic_sds_port_stopped_state_start_handler() - stop a port from "started" |
6f231dda | 1769 | * |
41e2b905 | 1770 | * @port: This is the struct scic_sds_port object which is cast into a |
09d7da13 | 1771 | * struct scic_sds_port object. |
6f231dda | 1772 | * |
09d7da13 DJ |
1773 | * This function takes the struct scic_sds_port from a stopped state and |
1774 | * attempts to start it. To start a port it must have no assiged devices and | |
1775 | * it must have at least one phy assigned to it. If those conditions are | |
1776 | * met then the port can transition to the ready state. | |
1777 | * enum sci_status | |
1778 | * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION | |
1779 | * This struct scic_sds_port object could not be started because the port | |
1780 | * configuration is not valid. | |
1781 | * SCI_SUCCESS | |
1782 | * the start request is successful and the struct scic_sds_port object | |
1783 | * has transitioned to the SCI_BASE_PORT_STATE_READY. | |
6f231dda | 1784 | */ |
09d7da13 | 1785 | static enum sci_status |
41e2b905 | 1786 | scic_sds_port_stopped_state_start_handler(struct scic_sds_port *sci_port) |
6f231dda | 1787 | { |
a8d4b9fe | 1788 | struct scic_sds_controller *scic = sci_port->owning_controller; |
d3757c3a | 1789 | struct isci_host *ihost = scic->ihost; |
a8d4b9fe | 1790 | enum sci_status status = SCI_SUCCESS; |
6f231dda | 1791 | u32 phy_mask; |
6f231dda | 1792 | |
a8d4b9fe | 1793 | if (sci_port->assigned_device_count > 0) { |
6f231dda | 1794 | /* |
09d7da13 DJ |
1795 | * @todo This is a start failure operation because |
1796 | * there are still devices assigned to this port. | |
1797 | * There must be no devices assigned to a port on a | |
1798 | * start operation. | |
1799 | */ | |
6f231dda DW |
1800 | return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION; |
1801 | } | |
1802 | ||
09d7da13 DJ |
1803 | sci_port->timer_handle = |
1804 | isci_timer_create(ihost, | |
1805 | sci_port, | |
1806 | scic_sds_port_timeout_handler); | |
6f231dda | 1807 | |
a8d4b9fe TC |
1808 | if (!sci_port->timer_handle) |
1809 | return SCI_FAILURE_INSUFFICIENT_RESOURCES; | |
6f231dda | 1810 | |
a8d4b9fe | 1811 | if (sci_port->reserved_rni == SCU_DUMMY_INDEX) { |
09d7da13 DJ |
1812 | u16 rni = scic_sds_remote_node_table_allocate_remote_node( |
1813 | &scic->available_remote_nodes, 1); | |
a8d4b9fe TC |
1814 | |
1815 | if (rni != SCU_DUMMY_INDEX) | |
1816 | scic_sds_port_construct_dummy_rnc(sci_port, rni); | |
1817 | else | |
1818 | status = SCI_FAILURE_INSUFFICIENT_RESOURCES; | |
1819 | sci_port->reserved_rni = rni; | |
1820 | } | |
1821 | ||
1822 | if (sci_port->reserved_tci == SCU_DUMMY_INDEX) { | |
1823 | /* Allocate a TCI and remove the sequence nibble */ | |
1824 | u16 tci = scic_controller_allocate_io_tag(scic); | |
1825 | ||
1826 | if (tci != SCU_DUMMY_INDEX) | |
1827 | scic_sds_port_construct_dummy_task(sci_port, tci); | |
1828 | else | |
1829 | status = SCI_FAILURE_INSUFFICIENT_RESOURCES; | |
1830 | sci_port->reserved_tci = tci; | |
1831 | } | |
1832 | ||
1833 | if (status == SCI_SUCCESS) { | |
1834 | phy_mask = scic_sds_port_get_phys(sci_port); | |
1835 | ||
1836 | /* | |
1837 | * There are one or more phys assigned to this port. Make sure | |
1838 | * the port's phy mask is in fact legal and supported by the | |
1839 | * silicon. | |
1840 | */ | |
1841 | if (scic_sds_port_is_phy_mask_valid(sci_port, phy_mask) == true) { | |
41e2b905 MT |
1842 | sci_base_state_machine_change_state( |
1843 | &sci_port->state_machine, | |
1844 | SCI_BASE_PORT_STATE_READY); | |
a8d4b9fe TC |
1845 | |
1846 | return SCI_SUCCESS; | |
1847 | } else | |
1848 | status = SCI_FAILURE; | |
6f231dda DW |
1849 | } |
1850 | ||
a8d4b9fe TC |
1851 | if (status != SCI_SUCCESS) |
1852 | scic_sds_port_destroy_dummy_resources(sci_port); | |
1853 | ||
1854 | return status; | |
6f231dda DW |
1855 | } |
1856 | ||
41e2b905 | 1857 | /* |
6f231dda DW |
1858 | * This method takes the struct scic_sds_port that is in a stopped state and handles a |
1859 | * stop request. This function takes no action. enum sci_status SCI_SUCCESS the | |
1860 | * stop request is successful as the struct scic_sds_port object is already stopped. | |
1861 | */ | |
1862 | static enum sci_status scic_sds_port_stopped_state_stop_handler( | |
41e2b905 | 1863 | struct scic_sds_port *port) |
6f231dda DW |
1864 | { |
1865 | /* We are already stopped so there is nothing to do here */ | |
1866 | return SCI_SUCCESS; | |
1867 | } | |
1868 | ||
41e2b905 | 1869 | /* |
6f231dda DW |
1870 | * This method takes the struct scic_sds_port that is in a stopped state and handles |
1871 | * the destruct request. The stopped state is the only state in which the | |
1872 | * struct scic_sds_port can be destroyed. This function causes the port object to | |
1873 | * transition to the SCI_BASE_PORT_STATE_FINAL. enum sci_status SCI_SUCCESS | |
1874 | */ | |
1875 | static enum sci_status scic_sds_port_stopped_state_destruct_handler( | |
41e2b905 | 1876 | struct scic_sds_port *port) |
6f231dda | 1877 | { |
41e2b905 | 1878 | sci_base_state_machine_stop(&port->state_machine); |
6f231dda DW |
1879 | |
1880 | return SCI_SUCCESS; | |
1881 | } | |
1882 | ||
41e2b905 | 1883 | /* |
6f231dda DW |
1884 | * This method takes the struct scic_sds_port that is in a stopped state and handles |
1885 | * the add phy request. In MPC mode the only time a phy can be added to a port | |
1886 | * is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status | |
1887 | * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not | |
1888 | * be added to the port. SCI_SUCCESS if the phy is added to the port. | |
1889 | */ | |
1890 | static enum sci_status scic_sds_port_stopped_state_add_phy_handler( | |
41e2b905 | 1891 | struct scic_sds_port *port, |
d857d9a0 | 1892 | struct scic_sds_phy *phy) |
6f231dda | 1893 | { |
6f231dda DW |
1894 | struct sci_sas_address port_sas_address; |
1895 | ||
1896 | /* Read the port assigned SAS Address if there is one */ | |
41e2b905 | 1897 | scic_sds_port_get_sas_address(port, &port_sas_address); |
6f231dda DW |
1898 | |
1899 | if (port_sas_address.high != 0 && port_sas_address.low != 0) { | |
1900 | struct sci_sas_address phy_sas_address; | |
1901 | ||
1902 | /* | |
1903 | * Make sure that the PHY SAS Address matches the SAS Address | |
1904 | * for this port. */ | |
d857d9a0 | 1905 | scic_sds_phy_get_sas_address(phy, &phy_sas_address); |
6f231dda DW |
1906 | |
1907 | if ( | |
1908 | (port_sas_address.high != phy_sas_address.high) | |
1909 | || (port_sas_address.low != phy_sas_address.low) | |
1910 | ) { | |
1911 | return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION; | |
1912 | } | |
1913 | } | |
1914 | ||
d857d9a0 | 1915 | return scic_sds_port_set_phy(port, phy); |
6f231dda DW |
1916 | } |
1917 | ||
41e2b905 | 1918 | /* |
6f231dda DW |
1919 | * This method takes the struct scic_sds_port that is in a stopped state and handles |
1920 | * the remove phy request. In MPC mode the only time a phy can be removed from | |
1921 | * a port is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status | |
1922 | * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not | |
1923 | * be added to the port. SCI_SUCCESS if the phy is added to the port. | |
1924 | */ | |
1925 | static enum sci_status scic_sds_port_stopped_state_remove_phy_handler( | |
41e2b905 | 1926 | struct scic_sds_port *port, |
d857d9a0 | 1927 | struct scic_sds_phy *phy) |
6f231dda | 1928 | { |
d857d9a0 | 1929 | return scic_sds_port_clear_phy(port, phy); |
6f231dda DW |
1930 | } |
1931 | ||
1932 | /* | |
1933 | * **************************************************************************** | |
1934 | * * READY STATE HANDLERS | |
1935 | * **************************************************************************** */ | |
1936 | ||
1937 | /* | |
1938 | * **************************************************************************** | |
1939 | * * RESETTING STATE HANDLERS | |
1940 | * **************************************************************************** */ | |
1941 | ||
1942 | /* | |
1943 | * **************************************************************************** | |
1944 | * * STOPPING STATE HANDLERS | |
1945 | * **************************************************************************** */ | |
1946 | ||
41e2b905 | 1947 | /* |
6f231dda DW |
1948 | * This method takes the struct scic_sds_port that is in a stopping state and handles |
1949 | * the complete io request. Should the request count reach 0 then the port | |
1950 | * object will transition to the stopped state. enum sci_status SCI_SUCCESS | |
1951 | */ | |
1952 | static enum sci_status scic_sds_port_stopping_state_complete_io_handler( | |
068b2c03 | 1953 | struct scic_sds_port *sci_port, |
6f231dda DW |
1954 | struct scic_sds_remote_device *device, |
1955 | struct scic_sds_request *io_request) | |
1956 | { | |
068b2c03 | 1957 | scic_sds_port_decrement_request_count(sci_port); |
6f231dda | 1958 | |
068b2c03 | 1959 | if (sci_port->started_request_count == 0) { |
41e2b905 | 1960 | sci_base_state_machine_change_state(&sci_port->state_machine, |
068b2c03 | 1961 | SCI_BASE_PORT_STATE_STOPPED); |
6f231dda DW |
1962 | } |
1963 | ||
1964 | return SCI_SUCCESS; | |
1965 | } | |
1966 | ||
1967 | /* | |
1968 | * **************************************************************************** | |
1969 | * * RESETTING STATE HANDLERS | |
1970 | * **************************************************************************** */ | |
1971 | ||
1972 | /** | |
1973 | * | |
1974 | * @port: This is the port object which is being requested to stop. | |
1975 | * | |
1976 | * This method will stop a failed port. This causes a transition to the | |
1977 | * stopping state. enum sci_status SCI_SUCCESS | |
1978 | */ | |
1979 | static enum sci_status scic_sds_port_reset_state_stop_handler( | |
41e2b905 | 1980 | struct scic_sds_port *port) |
6f231dda | 1981 | { |
6f231dda | 1982 | sci_base_state_machine_change_state( |
41e2b905 | 1983 | &port->state_machine, |
6f231dda DW |
1984 | SCI_BASE_PORT_STATE_STOPPING |
1985 | ); | |
1986 | ||
1987 | return SCI_SUCCESS; | |
1988 | } | |
1989 | ||
41e2b905 | 1990 | /* |
6f231dda DW |
1991 | * This method will transition a failed port to its ready state. The port |
1992 | * failed because a hard reset request timed out but at some time later one or | |
1993 | * more phys in the port became ready. enum sci_status SCI_SUCCESS | |
1994 | */ | |
1995 | static void scic_sds_port_reset_state_link_up_handler( | |
41e2b905 | 1996 | struct scic_sds_port *port, |
6f231dda DW |
1997 | struct scic_sds_phy *phy) |
1998 | { | |
1999 | /* | |
2000 | * / @todo We should make sure that the phy that has gone link up is the same | |
2001 | * / one on which we sent the reset. It is possible that the phy on | |
2002 | * / which we sent the reset is not the one that has gone link up and we | |
2003 | * / want to make sure that phy being reset comes back. Consider the | |
2004 | * / case where a reset is sent but before the hardware processes the | |
2005 | * / reset it get a link up on the port because of a hot plug event. | |
2006 | * / because of the reset request this phy will go link down almost | |
2007 | * / immediately. */ | |
2008 | ||
2009 | /* | |
2010 | * In the resetting state we don't notify the user regarding | |
2011 | * link up and link down notifications. */ | |
41e2b905 | 2012 | scic_sds_port_general_link_up_handler(port, phy, false); |
6f231dda DW |
2013 | } |
2014 | ||
41e2b905 | 2015 | /* |
6f231dda DW |
2016 | * This method process link down notifications that occur during a port reset |
2017 | * operation. Link downs can occur during the reset operation. enum sci_status | |
2018 | * SCI_SUCCESS | |
2019 | */ | |
2020 | static void scic_sds_port_reset_state_link_down_handler( | |
41e2b905 | 2021 | struct scic_sds_port *port, |
6f231dda DW |
2022 | struct scic_sds_phy *phy) |
2023 | { | |
2024 | /* | |
2025 | * In the resetting state we don't notify the user regarding | |
2026 | * link up and link down notifications. */ | |
41e2b905 | 2027 | scic_sds_port_deactivate_phy(port, phy, false); |
6f231dda DW |
2028 | } |
2029 | ||
35173d57 | 2030 | static struct scic_sds_port_state_handler |
6f231dda DW |
2031 | scic_sds_port_state_handler_table[SCI_BASE_PORT_MAX_STATES] = |
2032 | { | |
2033 | /* SCI_BASE_PORT_STATE_STOPPED */ | |
2034 | { | |
41e2b905 MT |
2035 | scic_sds_port_stopped_state_start_handler, |
2036 | scic_sds_port_stopped_state_stop_handler, | |
2037 | scic_sds_port_stopped_state_destruct_handler, | |
2038 | scic_sds_port_default_reset_handler, | |
2039 | scic_sds_port_stopped_state_add_phy_handler, | |
2040 | scic_sds_port_stopped_state_remove_phy_handler, | |
6f231dda DW |
2041 | scic_sds_port_default_frame_handler, |
2042 | scic_sds_port_default_event_handler, | |
2043 | scic_sds_port_default_link_up_handler, | |
2044 | scic_sds_port_default_link_down_handler, | |
2045 | scic_sds_port_default_start_io_handler, | |
2046 | scic_sds_port_default_complete_io_handler | |
2047 | }, | |
2048 | /* SCI_BASE_PORT_STATE_STOPPING */ | |
2049 | { | |
41e2b905 MT |
2050 | scic_sds_port_default_start_handler, |
2051 | scic_sds_port_default_stop_handler, | |
2052 | scic_sds_port_default_destruct_handler, | |
2053 | scic_sds_port_default_reset_handler, | |
2054 | scic_sds_port_default_add_phy_handler, | |
2055 | scic_sds_port_default_remove_phy_handler, | |
6f231dda DW |
2056 | scic_sds_port_default_frame_handler, |
2057 | scic_sds_port_default_event_handler, | |
2058 | scic_sds_port_default_link_up_handler, | |
2059 | scic_sds_port_default_link_down_handler, | |
2060 | scic_sds_port_default_start_io_handler, | |
2061 | scic_sds_port_stopping_state_complete_io_handler | |
2062 | }, | |
2063 | /* SCI_BASE_PORT_STATE_READY */ | |
2064 | { | |
41e2b905 MT |
2065 | scic_sds_port_default_start_handler, |
2066 | scic_sds_port_default_stop_handler, | |
2067 | scic_sds_port_default_destruct_handler, | |
2068 | scic_sds_port_default_reset_handler, | |
2069 | scic_sds_port_default_add_phy_handler, | |
2070 | scic_sds_port_default_remove_phy_handler, | |
6f231dda DW |
2071 | scic_sds_port_default_frame_handler, |
2072 | scic_sds_port_default_event_handler, | |
2073 | scic_sds_port_default_link_up_handler, | |
2074 | scic_sds_port_default_link_down_handler, | |
2075 | scic_sds_port_default_start_io_handler, | |
2076 | scic_sds_port_general_complete_io_handler | |
2077 | }, | |
2078 | /* SCI_BASE_PORT_STATE_RESETTING */ | |
2079 | { | |
41e2b905 MT |
2080 | scic_sds_port_default_start_handler, |
2081 | scic_sds_port_reset_state_stop_handler, | |
2082 | scic_sds_port_default_destruct_handler, | |
2083 | scic_sds_port_default_reset_handler, | |
2084 | scic_sds_port_default_add_phy_handler, | |
2085 | scic_sds_port_default_remove_phy_handler, | |
6f231dda DW |
2086 | scic_sds_port_default_frame_handler, |
2087 | scic_sds_port_default_event_handler, | |
2088 | scic_sds_port_reset_state_link_up_handler, | |
2089 | scic_sds_port_reset_state_link_down_handler, | |
2090 | scic_sds_port_default_start_io_handler, | |
2091 | scic_sds_port_general_complete_io_handler | |
2092 | }, | |
2093 | /* SCI_BASE_PORT_STATE_FAILED */ | |
2094 | { | |
41e2b905 MT |
2095 | scic_sds_port_default_start_handler, |
2096 | scic_sds_port_default_stop_handler, | |
2097 | scic_sds_port_default_destruct_handler, | |
2098 | scic_sds_port_default_reset_handler, | |
2099 | scic_sds_port_default_add_phy_handler, | |
2100 | scic_sds_port_default_remove_phy_handler, | |
6f231dda DW |
2101 | scic_sds_port_default_frame_handler, |
2102 | scic_sds_port_default_event_handler, | |
2103 | scic_sds_port_default_link_up_handler, | |
2104 | scic_sds_port_default_link_down_handler, | |
2105 | scic_sds_port_default_start_io_handler, | |
2106 | scic_sds_port_general_complete_io_handler | |
2107 | } | |
2108 | }; | |
2109 | ||
2110 | /* | |
2111 | * ****************************************************************************** | |
2112 | * * PORT STATE PRIVATE METHODS | |
2113 | * ****************************************************************************** */ | |
2114 | ||
2115 | /** | |
2116 | * | |
e2023b87 | 2117 | * @sci_port: This is the port object which to suspend. |
6f231dda DW |
2118 | * |
2119 | * This method will enable the SCU Port Task Scheduler for this port object but | |
2120 | * will leave the port task scheduler in a suspended state. none | |
2121 | */ | |
bc99aa47 CH |
2122 | static void |
2123 | scic_sds_port_enable_port_task_scheduler(struct scic_sds_port *port) | |
6f231dda DW |
2124 | { |
2125 | u32 pts_control_value; | |
2126 | ||
bc99aa47 | 2127 | pts_control_value = readl(&port->port_task_scheduler_registers->control); |
6f231dda | 2128 | pts_control_value |= SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND); |
bc99aa47 | 2129 | writel(pts_control_value, &port->port_task_scheduler_registers->control); |
6f231dda DW |
2130 | } |
2131 | ||
2132 | /** | |
2133 | * | |
e2023b87 | 2134 | * @sci_port: This is the port object which to resume. |
6f231dda DW |
2135 | * |
2136 | * This method will disable the SCU port task scheduler for this port object. | |
2137 | * none | |
2138 | */ | |
bc99aa47 CH |
2139 | static void |
2140 | scic_sds_port_disable_port_task_scheduler(struct scic_sds_port *port) | |
6f231dda DW |
2141 | { |
2142 | u32 pts_control_value; | |
2143 | ||
bc99aa47 CH |
2144 | pts_control_value = readl(&port->port_task_scheduler_registers->control); |
2145 | pts_control_value &= | |
2146 | ~(SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND)); | |
2147 | writel(pts_control_value, &port->port_task_scheduler_registers->control); | |
6f231dda DW |
2148 | } |
2149 | ||
35173d57 | 2150 | static void scic_sds_port_post_dummy_remote_node(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
2151 | { |
2152 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
2153 | u8 phys_index = sci_port->physical_port_index; | |
2154 | union scu_remote_node_context *rnc; | |
2155 | u16 rni = sci_port->reserved_rni; | |
2156 | u32 command; | |
2157 | ||
2158 | rnc = &scic->remote_node_context_table[rni]; | |
2159 | rnc->ssp.is_valid = true; | |
2160 | ||
2161 | command = SCU_CONTEXT_COMMAND_POST_RNC_32 | | |
2162 | phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni; | |
2163 | ||
2164 | scic_sds_controller_post_request(scic, command); | |
2165 | ||
2166 | /* ensure hardware has seen the post rnc command and give it | |
2167 | * ample time to act before sending the suspend | |
2168 | */ | |
bc99aa47 | 2169 | readl(&scic->smu_registers->interrupt_status); /* flush */ |
a8d4b9fe TC |
2170 | udelay(10); |
2171 | ||
2172 | command = SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX | | |
2173 | phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni; | |
2174 | ||
2175 | scic_sds_controller_post_request(scic, command); | |
2176 | } | |
2177 | ||
35173d57 | 2178 | static void scic_sds_port_invalidate_dummy_remote_node(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
2179 | { |
2180 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
2181 | u8 phys_index = sci_port->physical_port_index; | |
2182 | union scu_remote_node_context *rnc; | |
2183 | u16 rni = sci_port->reserved_rni; | |
2184 | u32 command; | |
2185 | ||
2186 | rnc = &scic->remote_node_context_table[rni]; | |
2187 | ||
2188 | rnc->ssp.is_valid = false; | |
2189 | ||
27ce51df DW |
2190 | /* ensure the preceding tc abort request has reached the |
2191 | * controller and give it ample time to act before posting the rnc | |
2192 | * invalidate | |
2193 | */ | |
bc99aa47 | 2194 | readl(&scic->smu_registers->interrupt_status); /* flush */ |
27ce51df DW |
2195 | udelay(10); |
2196 | ||
a8d4b9fe TC |
2197 | command = SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE | |
2198 | phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni; | |
2199 | ||
2200 | scic_sds_controller_post_request(scic, command); | |
2201 | } | |
2202 | ||
6f231dda DW |
2203 | /* |
2204 | * ****************************************************************************** | |
2205 | * * PORT STATE METHODS | |
2206 | * ****************************************************************************** */ | |
2207 | ||
2208 | /** | |
2209 | * | |
9a0fff7b | 2210 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda DW |
2211 | * |
2212 | * This method will perform the actions required by the struct scic_sds_port on | |
2213 | * entering the SCI_BASE_PORT_STATE_STOPPED. This function sets the stopped | |
2214 | * state handlers for the struct scic_sds_port object and disables the port task | |
2215 | * scheduler in the hardware. none | |
2216 | */ | |
9a0fff7b | 2217 | static void scic_sds_port_stopped_state_enter(void *object) |
6f231dda | 2218 | { |
115bd1f9 | 2219 | struct scic_sds_port *sci_port = object; |
6f231dda DW |
2220 | |
2221 | scic_sds_port_set_base_state_handlers( | |
e2023b87 | 2222 | sci_port, SCI_BASE_PORT_STATE_STOPPED |
6f231dda DW |
2223 | ); |
2224 | ||
2225 | if ( | |
2226 | SCI_BASE_PORT_STATE_STOPPING | |
e2023b87 | 2227 | == sci_port->state_machine.previous_state_id |
6f231dda DW |
2228 | ) { |
2229 | /* | |
2230 | * If we enter this state becasuse of a request to stop | |
2231 | * the port then we want to disable the hardwares port | |
2232 | * task scheduler. */ | |
e2023b87 | 2233 | scic_sds_port_disable_port_task_scheduler(sci_port); |
6f231dda DW |
2234 | } |
2235 | } | |
2236 | ||
2237 | /** | |
2238 | * | |
9a0fff7b | 2239 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda DW |
2240 | * |
2241 | * This method will perform the actions required by the struct scic_sds_port on | |
2242 | * exiting the SCI_BASE_STATE_STOPPED. This function enables the SCU hardware | |
2243 | * port task scheduler. none | |
2244 | */ | |
9a0fff7b | 2245 | static void scic_sds_port_stopped_state_exit(void *object) |
6f231dda | 2246 | { |
115bd1f9 | 2247 | struct scic_sds_port *sci_port = object; |
6f231dda DW |
2248 | |
2249 | /* Enable and suspend the port task scheduler */ | |
e2023b87 | 2250 | scic_sds_port_enable_port_task_scheduler(sci_port); |
6f231dda DW |
2251 | } |
2252 | ||
2253 | /** | |
068b2c03 | 2254 | * scic_sds_port_ready_state_enter - |
9a0fff7b | 2255 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda DW |
2256 | * |
2257 | * This method will perform the actions required by the struct scic_sds_port on | |
2258 | * entering the SCI_BASE_PORT_STATE_READY. This function sets the ready state | |
09d7da13 DJ |
2259 | * handlers for the struct scic_sds_port object, reports the port object as |
2260 | * not ready and starts the ready substate machine. none | |
6f231dda | 2261 | */ |
9a0fff7b | 2262 | static void scic_sds_port_ready_state_enter(void *object) |
6f231dda | 2263 | { |
068b2c03 | 2264 | struct scic_sds_controller *scic; |
115bd1f9 | 2265 | struct scic_sds_port *sci_port = object; |
068b2c03 DW |
2266 | struct isci_port *iport; |
2267 | struct isci_host *ihost; | |
2268 | u32 prev_state; | |
6f231dda | 2269 | |
068b2c03 | 2270 | scic = scic_sds_port_get_controller(sci_port); |
d3757c3a | 2271 | ihost = scic->ihost; |
115bd1f9 | 2272 | iport = sci_port->iport; |
6f231dda | 2273 | |
068b2c03 DW |
2274 | /* Put the ready state handlers in place though they will not be there long */ |
2275 | scic_sds_port_set_base_state_handlers(sci_port, SCI_BASE_PORT_STATE_READY); | |
2276 | ||
41e2b905 | 2277 | prev_state = sci_port->state_machine.previous_state_id; |
068b2c03 | 2278 | if (prev_state == SCI_BASE_PORT_STATE_RESETTING) |
09d7da13 | 2279 | isci_port_hard_reset_complete(iport, SCI_SUCCESS); |
068b2c03 | 2280 | else |
09d7da13 | 2281 | isci_port_not_ready(ihost, iport); |
6f231dda | 2282 | |
a8d4b9fe | 2283 | /* Post and suspend the dummy remote node context for this port. */ |
09d7da13 | 2284 | scic_sds_port_post_dummy_remote_node(sci_port); |
a8d4b9fe | 2285 | |
6f231dda | 2286 | /* Start the ready substate machine */ |
068b2c03 | 2287 | sci_base_state_machine_start(&sci_port->ready_substate_machine); |
6f231dda DW |
2288 | } |
2289 | ||
9a0fff7b | 2290 | static void scic_sds_port_ready_state_exit(void *object) |
6f231dda | 2291 | { |
115bd1f9 | 2292 | struct scic_sds_port *sci_port = object; |
a8d4b9fe | 2293 | |
068b2c03 DW |
2294 | sci_base_state_machine_stop(&sci_port->ready_substate_machine); |
2295 | scic_sds_port_invalidate_dummy_remote_node(sci_port); | |
6f231dda DW |
2296 | } |
2297 | ||
2298 | /** | |
2299 | * | |
9a0fff7b | 2300 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda DW |
2301 | * |
2302 | * This method will perform the actions required by the struct scic_sds_port on | |
2303 | * entering the SCI_BASE_PORT_STATE_RESETTING. This function sets the resetting | |
2304 | * state handlers for the struct scic_sds_port object. none | |
2305 | */ | |
9a0fff7b | 2306 | static void scic_sds_port_resetting_state_enter(void *object) |
6f231dda | 2307 | { |
115bd1f9 | 2308 | struct scic_sds_port *sci_port = object; |
6f231dda DW |
2309 | |
2310 | scic_sds_port_set_base_state_handlers( | |
e2023b87 | 2311 | sci_port, SCI_BASE_PORT_STATE_RESETTING |
6f231dda | 2312 | ); |
6f231dda DW |
2313 | } |
2314 | ||
2315 | /** | |
2316 | * | |
9a0fff7b | 2317 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda | 2318 | * |
09d7da13 DJ |
2319 | * This function will perform the actions required by the |
2320 | * struct scic_sds_port on | |
6f231dda DW |
2321 | * exiting the SCI_BASE_STATE_RESETTING. This function does nothing. none |
2322 | */ | |
9a0fff7b | 2323 | static inline void scic_sds_port_resetting_state_exit(void *object) |
6f231dda | 2324 | { |
115bd1f9 | 2325 | struct scic_sds_port *sci_port = object; |
6f231dda | 2326 | |
09d7da13 | 2327 | isci_timer_stop(sci_port->timer_handle); |
6f231dda DW |
2328 | } |
2329 | ||
2330 | /** | |
2331 | * | |
9a0fff7b MP |
2332 | * @object: This is the void object which is cast to a |
2333 | * struct scic_sds_port object. | |
6f231dda DW |
2334 | * |
2335 | * This method will perform the actions required by the struct scic_sds_port on | |
2336 | * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping | |
2337 | * state handlers for the struct scic_sds_port object. none | |
2338 | */ | |
9a0fff7b | 2339 | static void scic_sds_port_stopping_state_enter(void *object) |
6f231dda | 2340 | { |
115bd1f9 | 2341 | struct scic_sds_port *sci_port = object; |
6f231dda DW |
2342 | |
2343 | scic_sds_port_set_base_state_handlers( | |
e2023b87 | 2344 | sci_port, SCI_BASE_PORT_STATE_STOPPING |
6f231dda DW |
2345 | ); |
2346 | } | |
2347 | ||
2348 | /** | |
2349 | * | |
9a0fff7b | 2350 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda | 2351 | * |
09d7da13 DJ |
2352 | * This function will perform the actions required by the |
2353 | * struct scic_sds_port on | |
6f231dda DW |
2354 | * exiting the SCI_BASE_STATE_STOPPING. This function does nothing. none |
2355 | */ | |
09d7da13 | 2356 | static inline void |
9a0fff7b | 2357 | scic_sds_port_stopping_state_exit(void *object) |
6f231dda | 2358 | { |
115bd1f9 | 2359 | struct scic_sds_port *sci_port = object; |
6f231dda | 2360 | |
09d7da13 | 2361 | isci_timer_stop(sci_port->timer_handle); |
a8d4b9fe | 2362 | |
09d7da13 | 2363 | scic_sds_port_destroy_dummy_resources(sci_port); |
6f231dda DW |
2364 | } |
2365 | ||
2366 | /** | |
2367 | * | |
9a0fff7b | 2368 | * @object: This is the object which is cast to a struct scic_sds_port object. |
6f231dda | 2369 | * |
09d7da13 DJ |
2370 | * This function will perform the actions required by the |
2371 | * struct scic_sds_port on | |
6f231dda DW |
2372 | * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping |
2373 | * state handlers for the struct scic_sds_port object. none | |
2374 | */ | |
9a0fff7b | 2375 | static void scic_sds_port_failed_state_enter(void *object) |
6f231dda | 2376 | { |
115bd1f9 MP |
2377 | struct scic_sds_port *sci_port = object; |
2378 | struct isci_port *iport = sci_port->iport; | |
6f231dda | 2379 | |
09d7da13 DJ |
2380 | scic_sds_port_set_base_state_handlers(sci_port, |
2381 | SCI_BASE_PORT_STATE_FAILED); | |
6f231dda | 2382 | |
09d7da13 | 2383 | isci_port_hard_reset_complete(iport, SCI_FAILURE_TIMEOUT); |
6f231dda DW |
2384 | } |
2385 | ||
2386 | /* --------------------------------------------------------------------------- */ | |
2387 | ||
35173d57 | 2388 | static const struct sci_base_state scic_sds_port_state_table[] = { |
6f231dda DW |
2389 | [SCI_BASE_PORT_STATE_STOPPED] = { |
2390 | .enter_state = scic_sds_port_stopped_state_enter, | |
2391 | .exit_state = scic_sds_port_stopped_state_exit | |
2392 | }, | |
2393 | [SCI_BASE_PORT_STATE_STOPPING] = { | |
2394 | .enter_state = scic_sds_port_stopping_state_enter, | |
2395 | .exit_state = scic_sds_port_stopping_state_exit | |
2396 | }, | |
2397 | [SCI_BASE_PORT_STATE_READY] = { | |
2398 | .enter_state = scic_sds_port_ready_state_enter, | |
2399 | .exit_state = scic_sds_port_ready_state_exit | |
2400 | }, | |
2401 | [SCI_BASE_PORT_STATE_RESETTING] = { | |
2402 | .enter_state = scic_sds_port_resetting_state_enter, | |
2403 | .exit_state = scic_sds_port_resetting_state_exit | |
2404 | }, | |
2405 | [SCI_BASE_PORT_STATE_FAILED] = { | |
2406 | .enter_state = scic_sds_port_failed_state_enter, | |
2407 | } | |
2408 | }; | |
2409 | ||
35173d57 DW |
2410 | void scic_sds_port_construct(struct scic_sds_port *sci_port, u8 port_index, |
2411 | struct scic_sds_controller *scic) | |
2412 | { | |
2413 | u32 index; | |
2414 | ||
41e2b905 | 2415 | sci_base_state_machine_construct(&sci_port->state_machine, |
115bd1f9 | 2416 | sci_port, |
41e2b905 MT |
2417 | scic_sds_port_state_table, |
2418 | SCI_BASE_PORT_STATE_STOPPED); | |
2419 | ||
2420 | sci_base_state_machine_start(&sci_port->state_machine); | |
35173d57 DW |
2421 | |
2422 | sci_base_state_machine_construct(&sci_port->ready_substate_machine, | |
115bd1f9 | 2423 | sci_port, |
35173d57 DW |
2424 | scic_sds_port_ready_substate_table, |
2425 | SCIC_SDS_PORT_READY_SUBSTATE_WAITING); | |
2426 | ||
2427 | sci_port->logical_port_index = SCIC_SDS_DUMMY_PORT; | |
2428 | sci_port->physical_port_index = port_index; | |
2429 | sci_port->active_phy_mask = 0; | |
2430 | ||
2431 | sci_port->owning_controller = scic; | |
2432 | ||
2433 | sci_port->started_request_count = 0; | |
2434 | sci_port->assigned_device_count = 0; | |
2435 | ||
2436 | sci_port->reserved_rni = SCU_DUMMY_INDEX; | |
2437 | sci_port->reserved_tci = SCU_DUMMY_INDEX; | |
2438 | ||
2439 | sci_port->timer_handle = NULL; | |
2440 | ||
2441 | sci_port->port_task_scheduler_registers = NULL; | |
2442 | ||
2443 | for (index = 0; index < SCI_MAX_PHYS; index++) | |
2444 | sci_port->phy_table[index] = NULL; | |
2445 | } |