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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 | ||
56 | #include "intel_sas.h" | |
57 | #include "sci_base_port.h" | |
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" |
6f231dda DW |
64 | #include "scic_sds_remote_device.h" |
65 | #include "scic_sds_remote_node_context.h" | |
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 | |
35173d57 | 76 | static void sci_base_port_construct( |
6f231dda DW |
77 | struct sci_base_port *base_port, |
78 | const struct sci_base_state *state_table) | |
79 | { | |
80 | base_port->parent.private = NULL; | |
81 | sci_base_state_machine_construct( | |
82 | &base_port->state_machine, | |
83 | &base_port->parent, | |
84 | state_table, | |
85 | SCI_BASE_PORT_STATE_STOPPED | |
86 | ); | |
87 | ||
88 | sci_base_state_machine_start( | |
89 | &base_port->state_machine | |
90 | ); | |
91 | } | |
92 | ||
93 | /** | |
94 | * | |
95 | * @this_port: This is the port object to which the phy is being assigned. | |
96 | * @phy_index: This is the phy index that is being assigned to the port. | |
97 | * | |
98 | * This method will return a true value if the specified phy can be assigned to | |
99 | * this port The following is a list of phys for each port that are allowed: - | |
100 | * Port 0 - 3 2 1 0 - Port 1 - 1 - Port 2 - 3 2 - Port 3 - 3 This method | |
101 | * doesn't preclude all configurations. It merely ensures that a phy is part | |
102 | * of the allowable set of phy identifiers for that port. For example, one | |
103 | * could assign phy 3 to port 0 and no other phys. Please refer to | |
104 | * scic_sds_port_is_phy_mask_valid() for information regarding whether the | |
105 | * phy_mask for a port can be supported. bool true if this is a valid phy | |
106 | * assignment for the port false if this is not a valid phy assignment for the | |
107 | * port | |
108 | */ | |
109 | bool scic_sds_port_is_valid_phy_assignment( | |
110 | struct scic_sds_port *this_port, | |
111 | u32 phy_index) | |
112 | { | |
113 | /* Initialize to invalid value. */ | |
114 | u32 existing_phy_index = SCI_MAX_PHYS; | |
115 | u32 index; | |
116 | ||
117 | if ((this_port->physical_port_index == 1) && (phy_index != 1)) { | |
118 | return false; | |
119 | } | |
120 | ||
121 | if (this_port->physical_port_index == 3 && phy_index != 3) { | |
122 | return false; | |
123 | } | |
124 | ||
125 | if ( | |
126 | (this_port->physical_port_index == 2) | |
127 | && ((phy_index == 0) || (phy_index == 1)) | |
128 | ) { | |
129 | return false; | |
130 | } | |
131 | ||
132 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
133 | if ((this_port->phy_table[index] != NULL) | |
134 | && (index != phy_index)) { | |
135 | existing_phy_index = index; | |
136 | } | |
137 | } | |
138 | ||
139 | /* | |
140 | * Ensure that all of the phys in the port are capable of | |
141 | * operating at the same maximum link rate. */ | |
142 | if ( | |
143 | (existing_phy_index < SCI_MAX_PHYS) | |
144 | && (this_port->owning_controller->user_parameters.sds1.phys[ | |
145 | phy_index].max_speed_generation != | |
146 | this_port->owning_controller->user_parameters.sds1.phys[ | |
147 | existing_phy_index].max_speed_generation) | |
148 | ) | |
149 | return false; | |
150 | ||
151 | return true; | |
152 | } | |
153 | ||
154 | /** | |
155 | * This method requests a list (mask) of the phys contained in the supplied SAS | |
156 | * port. | |
157 | * @this_port: a handle corresponding to the SAS port for which to return the | |
158 | * phy mask. | |
159 | * | |
160 | * Return a bit mask indicating which phys are a part of this port. Each bit | |
161 | * corresponds to a phy identifier (e.g. bit 0 = phy id 0). | |
162 | */ | |
35173d57 | 163 | static u32 scic_sds_port_get_phys(struct scic_sds_port *this_port) |
6f231dda DW |
164 | { |
165 | u32 index; | |
166 | u32 mask; | |
167 | ||
168 | mask = 0; | |
169 | ||
170 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
171 | if (this_port->phy_table[index] != NULL) { | |
172 | mask |= (1 << index); | |
173 | } | |
174 | } | |
175 | ||
176 | return mask; | |
177 | } | |
178 | ||
179 | /** | |
180 | * | |
181 | * @this_port: This is the port object for which to determine if the phy mask | |
182 | * can be supported. | |
183 | * | |
184 | * This method will return a true value if the port's phy mask can be supported | |
185 | * by the SCU. The following is a list of valid PHY mask configurations for | |
186 | * each port: - Port 0 - [[3 2] 1] 0 - Port 1 - [1] - Port 2 - [[3] 2] | |
187 | * - Port 3 - [3] This method returns a boolean indication specifying if the | |
188 | * phy mask can be supported. true if this is a valid phy assignment for the | |
189 | * port false if this is not a valid phy assignment for the port | |
190 | */ | |
35173d57 | 191 | static bool scic_sds_port_is_phy_mask_valid( |
6f231dda DW |
192 | struct scic_sds_port *this_port, |
193 | u32 phy_mask) | |
194 | { | |
195 | if (this_port->physical_port_index == 0) { | |
196 | if (((phy_mask & 0x0F) == 0x0F) | |
197 | || ((phy_mask & 0x03) == 0x03) | |
198 | || ((phy_mask & 0x01) == 0x01) | |
199 | || (phy_mask == 0)) | |
200 | return true; | |
201 | } else if (this_port->physical_port_index == 1) { | |
202 | if (((phy_mask & 0x02) == 0x02) | |
203 | || (phy_mask == 0)) | |
204 | return true; | |
205 | } else if (this_port->physical_port_index == 2) { | |
206 | if (((phy_mask & 0x0C) == 0x0C) | |
207 | || ((phy_mask & 0x04) == 0x04) | |
208 | || (phy_mask == 0)) | |
209 | return true; | |
210 | } else if (this_port->physical_port_index == 3) { | |
211 | if (((phy_mask & 0x08) == 0x08) | |
212 | || (phy_mask == 0)) | |
213 | return true; | |
214 | } | |
215 | ||
216 | return false; | |
217 | } | |
218 | ||
219 | /** | |
220 | * | |
221 | * @this_port: This parameter specifies the port from which to return a | |
222 | * connected phy. | |
223 | * | |
224 | * This method retrieves a currently active (i.e. connected) phy contained in | |
225 | * the port. Currently, the lowest order phy that is connected is returned. | |
226 | * This method returns a pointer to a SCIS_SDS_PHY object. NULL This value is | |
227 | * returned if there are no currently active (i.e. connected to a remote end | |
228 | * point) phys contained in the port. All other values specify a struct scic_sds_phy | |
229 | * object that is active in the port. | |
230 | */ | |
231 | static struct scic_sds_phy *scic_sds_port_get_a_connected_phy( | |
232 | struct scic_sds_port *this_port | |
233 | ) { | |
234 | u32 index; | |
235 | struct scic_sds_phy *phy; | |
236 | ||
237 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
238 | /* | |
239 | * Ensure that the phy is both part of the port and currently | |
240 | * connected to the remote end-point. */ | |
241 | phy = this_port->phy_table[index]; | |
242 | if ( | |
243 | (phy != NULL) | |
244 | && scic_sds_port_active_phy(this_port, phy) | |
245 | ) { | |
246 | return phy; | |
247 | } | |
248 | } | |
249 | ||
250 | return NULL; | |
251 | } | |
252 | ||
253 | /** | |
254 | * scic_sds_port_set_phy() - | |
255 | * @out]: port The port object to which the phy assignement is being made. | |
256 | * @out]: phy The phy which is being assigned to the port. | |
257 | * | |
258 | * This method attempts to make the assignment of the phy to the port. If | |
259 | * successful the phy is assigned to the ports phy table. bool true if the phy | |
260 | * assignment can be made. false if the phy assignement can not be made. This | |
261 | * is a functional test that only fails if the phy is currently assigned to a | |
262 | * different port. | |
263 | */ | |
35173d57 | 264 | static enum sci_status scic_sds_port_set_phy( |
6f231dda DW |
265 | struct scic_sds_port *port, |
266 | struct scic_sds_phy *phy) | |
267 | { | |
268 | /* | |
269 | * Check to see if we can add this phy to a port | |
270 | * that means that the phy is not part of a port and that the port does | |
271 | * not already have a phy assinged to the phy index. */ | |
272 | if ( | |
a7e536c7 EN |
273 | (port->phy_table[phy->phy_index] == NULL) |
274 | && (scic_sds_phy_get_port(phy) == NULL) | |
6f231dda DW |
275 | && scic_sds_port_is_valid_phy_assignment(port, phy->phy_index) |
276 | ) { | |
277 | /* | |
278 | * Phy is being added in the stopped state so we are in MPC mode | |
279 | * make logical port index = physical port index */ | |
280 | port->logical_port_index = port->physical_port_index; | |
281 | port->phy_table[phy->phy_index] = phy; | |
282 | scic_sds_phy_set_port(phy, port); | |
283 | ||
284 | return SCI_SUCCESS; | |
285 | } | |
286 | ||
287 | return SCI_FAILURE; | |
288 | } | |
289 | ||
290 | /** | |
291 | * scic_sds_port_clear_phy() - | |
292 | * @out]: port The port from which the phy is being cleared. | |
293 | * @out]: phy The phy being cleared from the port. | |
294 | * | |
295 | * This method will clear the phy assigned to this port. This method fails if | |
296 | * this phy is not currently assinged to this port. bool true if the phy is | |
297 | * removed from the port. false if this phy is not assined to this port. | |
298 | */ | |
35173d57 | 299 | static enum sci_status scic_sds_port_clear_phy( |
6f231dda DW |
300 | struct scic_sds_port *port, |
301 | struct scic_sds_phy *phy) | |
302 | { | |
303 | /* Make sure that this phy is part of this port */ | |
304 | if ( | |
305 | (port->phy_table[phy->phy_index] == phy) | |
306 | && (scic_sds_phy_get_port(phy) == port) | |
307 | ) { | |
308 | /* Yep it is assigned to this port so remove it */ | |
309 | scic_sds_phy_set_port( | |
310 | phy, | |
311 | &scic_sds_port_get_controller(port)->port_table[SCI_MAX_PORTS] | |
312 | ); | |
313 | ||
a7e536c7 | 314 | port->phy_table[phy->phy_index] = NULL; |
6f231dda DW |
315 | |
316 | return SCI_SUCCESS; | |
317 | } | |
318 | ||
319 | return SCI_FAILURE; | |
320 | } | |
321 | ||
322 | /** | |
323 | * scic_sds_port_add_phy() - | |
324 | * @this_port: This parameter specifies the port in which the phy will be added. | |
325 | * @the_phy: This parameter is the phy which is to be added to the port. | |
326 | * | |
327 | * This method will add a PHY to the selected port. This method returns an | |
328 | * enum sci_status. SCI_SUCCESS the phy has been added to the port. Any other status | |
329 | * is failre to add the phy to the port. | |
330 | */ | |
331 | enum sci_status scic_sds_port_add_phy( | |
332 | struct scic_sds_port *this_port, | |
333 | struct scic_sds_phy *the_phy) | |
334 | { | |
335 | return this_port->state_handlers->parent.add_phy_handler( | |
336 | &this_port->parent, &the_phy->parent); | |
337 | } | |
338 | ||
339 | ||
340 | /** | |
341 | * scic_sds_port_remove_phy() - | |
342 | * @this_port: This parameter specifies the port in which the phy will be added. | |
343 | * @the_phy: This parameter is the phy which is to be added to the port. | |
344 | * | |
345 | * This method will remove the PHY from the selected PORT. This method returns | |
346 | * an enum sci_status. SCI_SUCCESS the phy has been removed from the port. Any other | |
347 | * status is failre to add the phy to the port. | |
348 | */ | |
349 | enum sci_status scic_sds_port_remove_phy( | |
350 | struct scic_sds_port *this_port, | |
351 | struct scic_sds_phy *the_phy) | |
352 | { | |
353 | return this_port->state_handlers->parent.remove_phy_handler( | |
354 | &this_port->parent, &the_phy->parent); | |
355 | } | |
356 | ||
357 | /** | |
358 | * This method requests the SAS address for the supplied SAS port from the SCI | |
359 | * implementation. | |
360 | * @this_port: a handle corresponding to the SAS port for which to return the | |
361 | * SAS address. | |
362 | * @sas_address: This parameter specifies a pointer to a SAS address structure | |
363 | * into which the core will copy the SAS address for the port. | |
364 | * | |
365 | */ | |
366 | void scic_sds_port_get_sas_address( | |
367 | struct scic_sds_port *this_port, | |
368 | struct sci_sas_address *sas_address) | |
369 | { | |
370 | u32 index; | |
371 | ||
372 | sas_address->high = 0; | |
373 | sas_address->low = 0; | |
374 | ||
375 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
376 | if (this_port->phy_table[index] != NULL) { | |
377 | scic_sds_phy_get_sas_address(this_port->phy_table[index], sas_address); | |
378 | } | |
379 | } | |
380 | } | |
381 | ||
382 | /** | |
383 | * This method will indicate which protocols are supported by this port. | |
384 | * @this_port: a handle corresponding to the SAS port for which to return the | |
385 | * supported protocols. | |
386 | * @protocols: This parameter specifies a pointer to an IAF protocol field | |
387 | * structure into which the core will copy the protocol values for the port. | |
388 | * The values are returned as part of a bit mask in order to allow for | |
389 | * multi-protocol support. | |
390 | * | |
391 | */ | |
392 | static void scic_sds_port_get_protocols( | |
393 | struct scic_sds_port *this_port, | |
394 | struct sci_sas_identify_address_frame_protocols *protocols) | |
395 | { | |
396 | u8 index; | |
397 | ||
398 | protocols->u.all = 0; | |
399 | ||
400 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
401 | if (this_port->phy_table[index] != NULL) { | |
402 | scic_sds_phy_get_protocols(this_port->phy_table[index], protocols); | |
403 | } | |
404 | } | |
405 | } | |
406 | ||
407 | /** | |
408 | * This method requests the SAS address for the device directly attached to | |
409 | * this SAS port. | |
410 | * @this_port: a handle corresponding to the SAS port for which to return the | |
411 | * SAS address. | |
412 | * @sas_address: This parameter specifies a pointer to a SAS address structure | |
413 | * into which the core will copy the SAS address for the device directly | |
414 | * attached to the port. | |
415 | * | |
416 | */ | |
417 | void scic_sds_port_get_attached_sas_address( | |
418 | struct scic_sds_port *this_port, | |
419 | struct sci_sas_address *sas_address) | |
420 | { | |
421 | struct sci_sas_identify_address_frame_protocols protocols; | |
422 | struct scic_sds_phy *phy; | |
423 | ||
424 | /* | |
425 | * Ensure that the phy is both part of the port and currently | |
426 | * connected to the remote end-point. */ | |
427 | phy = scic_sds_port_get_a_connected_phy(this_port); | |
428 | if (phy != NULL) { | |
429 | scic_sds_phy_get_attached_phy_protocols(phy, &protocols); | |
430 | ||
431 | if (!protocols.u.bits.stp_target) { | |
432 | scic_sds_phy_get_attached_sas_address(phy, sas_address); | |
433 | } else { | |
434 | scic_sds_phy_get_sas_address(phy, sas_address); | |
435 | sas_address->low += phy->phy_index; | |
436 | } | |
437 | } else { | |
438 | sas_address->high = 0; | |
439 | sas_address->low = 0; | |
440 | } | |
441 | } | |
442 | ||
443 | /** | |
444 | * This method will indicate which protocols are supported by this remote | |
445 | * device. | |
446 | * @this_port: a handle corresponding to the SAS port for which to return the | |
447 | * supported protocols. | |
448 | * @protocols: This parameter specifies a pointer to an IAF protocol field | |
449 | * structure into which the core will copy the protocol values for the port. | |
450 | * The values are returned as part of a bit mask in order to allow for | |
451 | * multi-protocol support. | |
452 | * | |
453 | */ | |
454 | void scic_sds_port_get_attached_protocols( | |
455 | struct scic_sds_port *this_port, | |
456 | struct sci_sas_identify_address_frame_protocols *protocols) | |
457 | { | |
458 | struct scic_sds_phy *phy; | |
459 | ||
460 | /* | |
461 | * Ensure that the phy is both part of the port and currently | |
462 | * connected to the remote end-point. */ | |
463 | phy = scic_sds_port_get_a_connected_phy(this_port); | |
464 | if (phy != NULL) | |
465 | scic_sds_phy_get_attached_phy_protocols(phy, protocols); | |
466 | else | |
467 | protocols->u.all = 0; | |
468 | } | |
469 | ||
470 | /** | |
a8d4b9fe | 471 | * scic_sds_port_construct_dummy_rnc() - create dummy rnc for si workaround |
6f231dda | 472 | * |
a8d4b9fe TC |
473 | * @sci_port: logical port on which we need to create the remote node context |
474 | * @rni: remote node index for this remote node context. | |
6f231dda | 475 | * |
a8d4b9fe TC |
476 | * This routine will construct a dummy remote node context data structure |
477 | * This structure will be posted to the hardware to work around a scheduler | |
478 | * error in the hardware. | |
6f231dda | 479 | */ |
35173d57 | 480 | static void scic_sds_port_construct_dummy_rnc(struct scic_sds_port *sci_port, u16 rni) |
a8d4b9fe TC |
481 | { |
482 | union scu_remote_node_context *rnc; | |
6f231dda | 483 | |
a8d4b9fe TC |
484 | rnc = &sci_port->owning_controller->remote_node_context_table[rni]; |
485 | ||
486 | memset(rnc, 0, sizeof(union scu_remote_node_context)); | |
487 | ||
488 | rnc->ssp.remote_sas_address_hi = 0; | |
489 | rnc->ssp.remote_sas_address_lo = 0; | |
490 | ||
491 | rnc->ssp.remote_node_index = rni; | |
492 | rnc->ssp.remote_node_port_width = 1; | |
493 | rnc->ssp.logical_port_index = sci_port->physical_port_index; | |
494 | ||
495 | rnc->ssp.nexus_loss_timer_enable = false; | |
496 | rnc->ssp.check_bit = false; | |
497 | rnc->ssp.is_valid = true; | |
498 | rnc->ssp.is_remote_node_context = true; | |
499 | rnc->ssp.function_number = 0; | |
500 | rnc->ssp.arbitration_wait_time = 0; | |
501 | } | |
6f231dda DW |
502 | |
503 | /** | |
a8d4b9fe TC |
504 | * scic_sds_port_construct_dummy_task() - create dummy task for si workaround |
505 | * @sci_port The logical port on which we need to create the | |
506 | * remote node context. | |
507 | * context. | |
508 | * @tci The remote node index for this remote node context. | |
6f231dda | 509 | * |
a8d4b9fe TC |
510 | * This routine will construct a dummy task context data structure. This |
511 | * structure will be posted to the hardwre to work around a scheduler error | |
512 | * in the hardware. | |
6f231dda DW |
513 | * |
514 | */ | |
35173d57 | 515 | static void scic_sds_port_construct_dummy_task(struct scic_sds_port *sci_port, u16 tci) |
a8d4b9fe TC |
516 | { |
517 | struct scu_task_context *task_context; | |
518 | ||
519 | task_context = scic_sds_controller_get_task_context_buffer(sci_port->owning_controller, tci); | |
520 | ||
521 | memset(task_context, 0, sizeof(struct scu_task_context)); | |
522 | ||
523 | task_context->abort = 0; | |
524 | task_context->priority = 0; | |
525 | task_context->initiator_request = 1; | |
526 | task_context->connection_rate = 1; | |
527 | task_context->protocol_engine_index = 0; | |
528 | task_context->logical_port_index = sci_port->physical_port_index; | |
529 | task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP; | |
530 | task_context->task_index = scic_sds_io_tag_get_index(tci); | |
531 | task_context->valid = SCU_TASK_CONTEXT_VALID; | |
532 | task_context->context_type = SCU_TASK_CONTEXT_TYPE; | |
533 | ||
534 | task_context->remote_node_index = sci_port->reserved_rni; | |
535 | task_context->command_code = 0; | |
536 | ||
537 | task_context->link_layer_control = 0; | |
538 | task_context->do_not_dma_ssp_good_response = 1; | |
539 | task_context->strict_ordering = 0; | |
540 | task_context->control_frame = 0; | |
541 | task_context->timeout_enable = 0; | |
542 | task_context->block_guard_enable = 0; | |
543 | ||
544 | task_context->address_modifier = 0; | |
545 | ||
546 | task_context->task_phase = 0x01; | |
547 | } | |
548 | ||
35173d57 | 549 | static void scic_sds_port_destroy_dummy_resources(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
550 | { |
551 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
552 | ||
553 | if (sci_port->reserved_tci != SCU_DUMMY_INDEX) | |
554 | scic_controller_free_io_tag(scic, sci_port->reserved_tci); | |
555 | ||
556 | if (sci_port->reserved_rni != SCU_DUMMY_INDEX) | |
557 | scic_sds_remote_node_table_release_remote_node_index(&scic->available_remote_nodes, | |
558 | 1, sci_port->reserved_rni); | |
559 | ||
560 | sci_port->reserved_rni = SCU_DUMMY_INDEX; | |
561 | sci_port->reserved_tci = SCU_DUMMY_INDEX; | |
562 | } | |
563 | ||
6f231dda DW |
564 | /** |
565 | * This method performs initialization of the supplied port. Initialization | |
566 | * includes: - state machine initialization - member variable initialization | |
567 | * - configuring the phy_mask | |
568 | * @this_port: | |
569 | * @transport_layer_registers: | |
570 | * @port_task_scheduler_registers: | |
571 | * @port_configuration_regsiter: | |
572 | * | |
573 | * enum sci_status SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION This value is returned | |
574 | * if the phy being added to the port | |
575 | */ | |
576 | enum sci_status scic_sds_port_initialize( | |
577 | struct scic_sds_port *this_port, | |
24621466 HD |
578 | void __iomem *port_task_scheduler_registers, |
579 | void __iomem *port_configuration_regsiter, | |
580 | void __iomem *viit_registers) | |
6f231dda | 581 | { |
6f231dda DW |
582 | this_port->port_task_scheduler_registers = port_task_scheduler_registers; |
583 | this_port->port_pe_configuration_register = port_configuration_regsiter; | |
584 | this_port->viit_registers = viit_registers; | |
585 | ||
6f231dda DW |
586 | return SCI_SUCCESS; |
587 | } | |
588 | ||
589 | /** | |
35173d57 DW |
590 | * scic_port_get_properties() - This method simply returns the properties |
591 | * regarding the port, such as: physical index, protocols, sas address, etc. | |
592 | * @port: this parameter specifies the port for which to retrieve the physical | |
593 | * index. | |
594 | * @properties: This parameter specifies the properties structure into which to | |
595 | * copy the requested information. | |
6f231dda | 596 | * |
35173d57 DW |
597 | * Indicate if the user specified a valid port. SCI_SUCCESS This value is |
598 | * returned if the specified port was valid. SCI_FAILURE_INVALID_PORT This | |
599 | * value is returned if the specified port is not valid. When this value is | |
600 | * returned, no data is copied to the properties output parameter. | |
6f231dda | 601 | */ |
6f231dda DW |
602 | enum sci_status scic_port_get_properties( |
603 | struct scic_sds_port *port, | |
604 | struct scic_port_properties *prop) | |
605 | { | |
a7e536c7 | 606 | if ((port == NULL) || |
6f231dda DW |
607 | (port->logical_port_index == SCIC_SDS_DUMMY_PORT)) |
608 | return SCI_FAILURE_INVALID_PORT; | |
609 | ||
610 | prop->index = port->logical_port_index; | |
611 | prop->phy_mask = scic_sds_port_get_phys(port); | |
612 | scic_sds_port_get_sas_address(port, &prop->local.sas_address); | |
613 | scic_sds_port_get_protocols(port, &prop->local.protocols); | |
614 | scic_sds_port_get_attached_sas_address(port, &prop->remote.sas_address); | |
615 | scic_sds_port_get_attached_protocols(port, &prop->remote.protocols); | |
616 | ||
617 | return SCI_SUCCESS; | |
618 | } | |
619 | ||
35173d57 | 620 | /** |
de728b7d | 621 | * scic_port_hard_reset() - perform port hard reset |
35173d57 DW |
622 | * @port: a handle corresponding to the SAS port to be hard reset. |
623 | * @reset_timeout: This parameter specifies the number of milliseconds in which | |
624 | * the port reset operation should complete. | |
625 | * | |
de728b7d | 626 | * The SCI User callback in scic_user_callbacks_t will only be called once for |
35173d57 DW |
627 | * each phy in the SAS Port at completion of the hard reset sequence. Return a |
628 | * status indicating whether the hard reset started successfully. SCI_SUCCESS | |
629 | * This value is returned if the hard reset operation started successfully. | |
630 | */ | |
6f231dda DW |
631 | enum sci_status scic_port_hard_reset( |
632 | struct scic_sds_port *port, | |
633 | u32 reset_timeout) | |
634 | { | |
635 | return port->state_handlers->parent.reset_handler( | |
636 | &port->parent, reset_timeout); | |
637 | } | |
638 | ||
639 | /** | |
6f231dda | 640 | * This method assigns the direct attached device ID for this port. |
24621466 HD |
641 | * |
642 | * @param[in] this_port The port for which the direct attached device id is to | |
643 | * be assigned. | |
644 | * @param[in] device_id The direct attached device ID to assign to the port. | |
645 | * This will be the RNi for the device | |
6f231dda | 646 | */ |
24621466 | 647 | void scic_sds_port_setup_transports( |
6f231dda DW |
648 | struct scic_sds_port *this_port, |
649 | u32 device_id) | |
650 | { | |
24621466 | 651 | u8 index; |
6f231dda | 652 | |
24621466 HD |
653 | for (index = 0; index < SCI_MAX_PHYS; index++) { |
654 | if (this_port->active_phy_mask & (1 << index)) | |
655 | scic_sds_phy_setup_transport(this_port->phy_table[index], device_id); | |
656 | } | |
6f231dda DW |
657 | } |
658 | ||
6f231dda DW |
659 | /** |
660 | * | |
661 | * @this_port: This is the port on which the phy should be enabled. | |
662 | * @the_phy: This is the specific phy which to enable. | |
663 | * @do_notify_user: This parameter specifies whether to inform the user (via | |
664 | * scic_cb_port_link_up()) as to the fact that a new phy as become ready. | |
665 | * | |
09d7da13 DJ |
666 | * This function will activate the phy in the port. |
667 | * Activation includes: - adding | |
6f231dda DW |
668 | * the phy to the port - enabling the Protocol Engine in the silicon. - |
669 | * notifying the user that the link is up. none | |
670 | */ | |
35173d57 DW |
671 | static void scic_sds_port_activate_phy(struct scic_sds_port *sci_port, |
672 | struct scic_sds_phy *sci_phy, | |
673 | bool do_notify_user) | |
6f231dda | 674 | { |
35173d57 | 675 | struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port); |
6f231dda | 676 | struct sci_sas_identify_address_frame_protocols protocols; |
09d7da13 | 677 | struct isci_host *ihost = sci_object_get_association(scic); |
6f231dda | 678 | |
09d7da13 | 679 | scic_sds_phy_get_attached_phy_protocols(sci_phy, &protocols); |
6f231dda DW |
680 | |
681 | /* If this is sata port then the phy has already been resumed */ | |
09d7da13 DJ |
682 | if (!protocols.u.bits.stp_target) |
683 | scic_sds_phy_resume(sci_phy); | |
6f231dda | 684 | |
09d7da13 | 685 | sci_port->active_phy_mask |= 1 << sci_phy->phy_index; |
6f231dda | 686 | |
09d7da13 | 687 | scic_sds_controller_clear_invalid_phy(scic, sci_phy); |
6f231dda DW |
688 | |
689 | if (do_notify_user == true) | |
09d7da13 | 690 | isci_port_link_up(ihost, sci_port, sci_phy); |
6f231dda DW |
691 | } |
692 | ||
09d7da13 DJ |
693 | void scic_sds_port_deactivate_phy(struct scic_sds_port *sci_port, |
694 | struct scic_sds_phy *sci_phy, | |
695 | bool do_notify_user) | |
6f231dda | 696 | { |
35173d57 | 697 | struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port); |
09d7da13 DJ |
698 | struct isci_port *iport = sci_object_get_association(sci_port); |
699 | struct isci_host *ihost = sci_object_get_association(scic); | |
700 | struct isci_phy *iphy = sci_object_get_association(sci_phy); | |
701 | ||
702 | sci_port->active_phy_mask &= ~(1 << sci_phy->phy_index); | |
6f231dda | 703 | |
09d7da13 | 704 | sci_phy->max_negotiated_speed = SCI_SAS_NO_LINK_RATE; |
6f231dda DW |
705 | |
706 | /* Re-assign the phy back to the LP as if it were a narrow port */ | |
bc99aa47 CH |
707 | writel(sci_phy->phy_index, |
708 | &sci_port->port_pe_configuration_register[sci_phy->phy_index]); | |
6f231dda DW |
709 | |
710 | if (do_notify_user == true) | |
09d7da13 | 711 | isci_port_link_down(ihost, iphy, iport); |
6f231dda DW |
712 | } |
713 | ||
714 | /** | |
715 | * | |
716 | * @this_port: This is the port on which the phy should be disabled. | |
717 | * @the_phy: This is the specific phy which to disabled. | |
718 | * | |
09d7da13 | 719 | * This function will disable the phy and report that the phy is not valid for |
6f231dda DW |
720 | * this port object. None |
721 | */ | |
722 | static void scic_sds_port_invalid_link_up( | |
09d7da13 DJ |
723 | struct scic_sds_port *sci_port, |
724 | struct scic_sds_phy *sci_phy) | |
6f231dda | 725 | { |
09d7da13 DJ |
726 | struct scic_sds_controller *scic = |
727 | scic_sds_port_get_controller(sci_port); | |
6f231dda DW |
728 | |
729 | /* | |
09d7da13 DJ |
730 | * Check to see if we have alreay reported this link as bad and if |
731 | * not go ahead and tell the SCI_USER that we have discovered an | |
732 | * invalid link. | |
733 | */ | |
734 | if ((scic->invalid_phy_mask & (1 << sci_phy->phy_index)) == 0) { | |
735 | scic_sds_controller_set_invalid_phy(scic, sci_phy); | |
736 | isci_port_invalid_link_up(scic, sci_port, sci_phy); | |
6f231dda DW |
737 | } |
738 | } | |
739 | ||
35173d57 DW |
740 | /** |
741 | * scic_sds_port_general_link_up_handler - phy can be assigned to port? | |
742 | * @sci_port: scic_sds_port object for which has a phy that has gone link up. | |
743 | * @sci_phy: This is the struct scic_sds_phy object that has gone link up. | |
744 | * @do_notify_user: This parameter specifies whether to inform the user (via | |
745 | * scic_cb_port_link_up()) as to the fact that a new phy as become ready. | |
746 | * | |
747 | * Determine if this phy can be assigned to this | |
748 | * port . If the phy is not a valid PHY for | |
749 | * this port then the function will notify the user. A PHY can only be | |
750 | * part of a port if it's attached SAS ADDRESS is the same as all other PHYs in | |
751 | * the same port. none | |
752 | */ | |
753 | static void scic_sds_port_general_link_up_handler(struct scic_sds_port *sci_port, | |
754 | struct scic_sds_phy *sci_phy, | |
755 | bool do_notify_user) | |
756 | { | |
757 | struct sci_sas_address port_sas_address; | |
758 | struct sci_sas_address phy_sas_address; | |
759 | ||
760 | scic_sds_port_get_attached_sas_address(sci_port, &port_sas_address); | |
761 | scic_sds_phy_get_attached_sas_address(sci_phy, &phy_sas_address); | |
762 | ||
763 | /* If the SAS address of the new phy matches the SAS address of | |
764 | * other phys in the port OR this is the first phy in the port, | |
765 | * then activate the phy and allow it to be used for operations | |
766 | * in this port. | |
767 | */ | |
768 | if ((phy_sas_address.high == port_sas_address.high && | |
769 | phy_sas_address.low == port_sas_address.low) || | |
770 | sci_port->active_phy_mask == 0) { | |
771 | struct sci_base_state_machine *sm = &sci_port->parent.state_machine; | |
772 | ||
773 | scic_sds_port_activate_phy(sci_port, sci_phy, do_notify_user); | |
774 | if (sm->current_state_id == SCI_BASE_PORT_STATE_RESETTING) | |
775 | sci_base_state_machine_change_state(sm, SCI_BASE_PORT_STATE_READY); | |
776 | } else | |
777 | scic_sds_port_invalid_link_up(sci_port, sci_phy); | |
778 | } | |
779 | ||
780 | ||
781 | ||
6f231dda DW |
782 | /** |
783 | * This method returns false if the port only has a single phy object assigned. | |
784 | * If there are no phys or more than one phy then the method will return | |
785 | * true. | |
786 | * @this_port: The port for which the wide port condition is to be checked. | |
787 | * | |
788 | * bool true Is returned if this is a wide ported port. false Is returned if | |
789 | * this is a narrow port. | |
790 | */ | |
791 | static bool scic_sds_port_is_wide(struct scic_sds_port *this_port) | |
792 | { | |
793 | u32 index; | |
794 | u32 phy_count = 0; | |
795 | ||
796 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
797 | if (this_port->phy_table[index] != NULL) { | |
798 | phy_count++; | |
799 | } | |
800 | } | |
801 | ||
802 | return phy_count != 1; | |
803 | } | |
804 | ||
805 | /** | |
806 | * This method is called by the PHY object when the link is detected. if the | |
807 | * port wants the PHY to continue on to the link up state then the port | |
808 | * layer must return true. If the port object returns false the phy object | |
809 | * must halt its attempt to go link up. | |
810 | * @this_port: The port associated with the phy object. | |
811 | * @the_phy: The phy object that is trying to go link up. | |
812 | * | |
813 | * true if the phy object can continue to the link up condition. true Is | |
814 | * returned if this phy can continue to the ready state. false Is returned if | |
815 | * can not continue on to the ready state. This notification is in place for | |
816 | * wide ports and direct attached phys. Since there are no wide ported SATA | |
817 | * devices this could become an invalid port configuration. | |
818 | */ | |
819 | bool scic_sds_port_link_detected( | |
820 | struct scic_sds_port *this_port, | |
821 | struct scic_sds_phy *the_phy) | |
822 | { | |
823 | struct sci_sas_identify_address_frame_protocols protocols; | |
824 | ||
825 | scic_sds_phy_get_attached_phy_protocols(the_phy, &protocols); | |
826 | ||
827 | if ( | |
828 | (this_port->logical_port_index != SCIC_SDS_DUMMY_PORT) | |
829 | && (protocols.u.bits.stp_target) | |
830 | && scic_sds_port_is_wide(this_port) | |
831 | ) { | |
832 | scic_sds_port_invalid_link_up(this_port, the_phy); | |
833 | ||
834 | return false; | |
835 | } | |
836 | ||
837 | return true; | |
838 | } | |
839 | ||
840 | /** | |
841 | * This method is the entry point for the phy to inform the port that it is now | |
842 | * in a ready state | |
843 | * @this_port: | |
844 | * | |
845 | * | |
846 | */ | |
847 | void scic_sds_port_link_up( | |
848 | struct scic_sds_port *this_port, | |
849 | struct scic_sds_phy *the_phy) | |
850 | { | |
851 | the_phy->is_in_link_training = false; | |
852 | ||
853 | this_port->state_handlers->link_up_handler(this_port, the_phy); | |
854 | } | |
855 | ||
856 | /** | |
857 | * This method is the entry point for the phy to inform the port that it is no | |
858 | * longer in a ready state | |
859 | * @this_port: | |
860 | * | |
861 | * | |
862 | */ | |
863 | void scic_sds_port_link_down( | |
864 | struct scic_sds_port *this_port, | |
865 | struct scic_sds_phy *the_phy) | |
866 | { | |
867 | this_port->state_handlers->link_down_handler(this_port, the_phy); | |
868 | } | |
869 | ||
870 | /** | |
871 | * This method is called to start an IO request on this port. | |
872 | * @this_port: | |
873 | * @the_device: | |
874 | * @the_io_request: | |
875 | * | |
876 | * enum sci_status | |
877 | */ | |
878 | enum sci_status scic_sds_port_start_io( | |
879 | struct scic_sds_port *this_port, | |
880 | struct scic_sds_remote_device *the_device, | |
881 | struct scic_sds_request *the_io_request) | |
882 | { | |
883 | return this_port->state_handlers->start_io_handler( | |
884 | this_port, the_device, the_io_request); | |
885 | } | |
886 | ||
887 | /** | |
888 | * This method is called to complete an IO request to the port. | |
889 | * @this_port: | |
890 | * @the_device: | |
891 | * @the_io_request: | |
892 | * | |
893 | * enum sci_status | |
894 | */ | |
895 | enum sci_status scic_sds_port_complete_io( | |
896 | struct scic_sds_port *this_port, | |
897 | struct scic_sds_remote_device *the_device, | |
898 | struct scic_sds_request *the_io_request) | |
899 | { | |
900 | return this_port->state_handlers->complete_io_handler( | |
901 | this_port, the_device, the_io_request); | |
902 | } | |
903 | ||
904 | /** | |
905 | * This method is provided to timeout requests for port operations. Mostly its | |
906 | * for the port reset operation. | |
907 | * | |
908 | * | |
909 | */ | |
910 | static void scic_sds_port_timeout_handler(void *port) | |
911 | { | |
09d7da13 | 912 | struct scic_sds_port *sci_port = port; |
6f231dda DW |
913 | u32 current_state; |
914 | ||
915 | current_state = sci_base_state_machine_get_state( | |
09d7da13 | 916 | &sci_port->parent.state_machine); |
6f231dda DW |
917 | |
918 | if (current_state == SCI_BASE_PORT_STATE_RESETTING) { | |
919 | /* | |
09d7da13 DJ |
920 | * if the port is still in the resetting state then the |
921 | * timeout fired before the reset completed. | |
922 | */ | |
6f231dda | 923 | sci_base_state_machine_change_state( |
09d7da13 DJ |
924 | &sci_port->parent.state_machine, |
925 | SCI_BASE_PORT_STATE_FAILED); | |
6f231dda DW |
926 | } else if (current_state == SCI_BASE_PORT_STATE_STOPPED) { |
927 | /* | |
928 | * if the port is stopped then the start request failed | |
09d7da13 DJ |
929 | * In this case stay in the stopped state. |
930 | */ | |
931 | dev_err(sciport_to_dev(sci_port), | |
6f231dda DW |
932 | "%s: SCIC Port 0x%p failed to stop before tiemout.\n", |
933 | __func__, | |
09d7da13 | 934 | sci_port); |
6f231dda | 935 | } else if (current_state == SCI_BASE_PORT_STATE_STOPPING) { |
09d7da13 DJ |
936 | /* |
937 | * if the port is still stopping then the stop has not | |
938 | * completed | |
939 | */ | |
940 | isci_port_stop_complete( | |
941 | scic_sds_port_get_controller(sci_port), | |
942 | sci_port, | |
943 | SCI_FAILURE_TIMEOUT); | |
6f231dda DW |
944 | } else { |
945 | /* | |
09d7da13 DJ |
946 | * The port is in the ready state and we have a timer |
947 | * reporting a timeout this should not happen. | |
948 | */ | |
949 | dev_err(sciport_to_dev(sci_port), | |
6f231dda DW |
950 | "%s: SCIC Port 0x%p is processing a timeout operation " |
951 | "in state %d.\n", | |
952 | __func__, | |
09d7da13 | 953 | sci_port, |
6f231dda DW |
954 | current_state); |
955 | } | |
956 | } | |
957 | ||
958 | /* --------------------------------------------------------------------------- */ | |
959 | ||
6f231dda DW |
960 | /** |
961 | * This function updates the hardwares VIIT entry for this port. | |
962 | * | |
963 | * | |
964 | */ | |
35173d57 | 965 | static void scic_sds_port_update_viit_entry(struct scic_sds_port *this_port) |
6f231dda DW |
966 | { |
967 | struct sci_sas_address sas_address; | |
968 | ||
969 | scic_sds_port_get_sas_address(this_port, &sas_address); | |
970 | ||
bc99aa47 CH |
971 | writel(sas_address.high, |
972 | &this_port->viit_registers->initiator_sas_address_hi); | |
973 | writel(sas_address.low, | |
974 | &this_port->viit_registers->initiator_sas_address_lo); | |
6f231dda DW |
975 | |
976 | /* This value get cleared just in case its not already cleared */ | |
bc99aa47 | 977 | writel(0, &this_port->viit_registers->reserved); |
6f231dda DW |
978 | |
979 | /* We are required to update the status register last */ | |
bc99aa47 CH |
980 | writel(SCU_VIIT_ENTRY_ID_VIIT | |
981 | SCU_VIIT_IPPT_INITIATOR | | |
982 | ((1 << this_port->physical_port_index) << SCU_VIIT_ENTRY_LPVIE_SHIFT) | | |
983 | SCU_VIIT_STATUS_ALL_VALID, | |
984 | &this_port->viit_registers->status); | |
6f231dda DW |
985 | } |
986 | ||
987 | /** | |
988 | * This method returns the maximum allowed speed for data transfers on this | |
989 | * port. This maximum allowed speed evaluates to the maximum speed of the | |
990 | * slowest phy in the port. | |
991 | * @this_port: This parameter specifies the port for which to retrieve the | |
992 | * maximum allowed speed. | |
993 | * | |
994 | * This method returns the maximum negotiated speed of the slowest phy in the | |
995 | * port. | |
996 | */ | |
997 | enum sci_sas_link_rate scic_sds_port_get_max_allowed_speed( | |
998 | struct scic_sds_port *this_port) | |
999 | { | |
1000 | u16 index = 0; | |
1001 | enum sci_sas_link_rate max_allowed_speed = SCI_SAS_600_GB; | |
1002 | struct scic_sds_phy *phy = NULL; | |
1003 | ||
1004 | /* | |
1005 | * Loop through all of the phys in this port and find the phy with the | |
1006 | * lowest maximum link rate. */ | |
1007 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
1008 | phy = this_port->phy_table[index]; | |
1009 | if ( | |
1010 | (phy != NULL) | |
1011 | && (scic_sds_port_active_phy(this_port, phy) == true) | |
1012 | && (phy->max_negotiated_speed < max_allowed_speed) | |
1013 | ) | |
1014 | max_allowed_speed = phy->max_negotiated_speed; | |
1015 | } | |
1016 | ||
1017 | return max_allowed_speed; | |
1018 | } | |
1019 | ||
1020 | ||
1021 | /** | |
1022 | * This method passes the event to core user. | |
1023 | * @this_port: The port that a BCN happens. | |
1024 | * @this_phy: The phy that receives BCN. | |
1025 | * | |
1026 | */ | |
1027 | void scic_sds_port_broadcast_change_received( | |
09d7da13 DJ |
1028 | struct scic_sds_port *sci_port, |
1029 | struct scic_sds_phy *sci_phy) | |
6f231dda | 1030 | { |
09d7da13 DJ |
1031 | struct scic_sds_controller *scic = sci_port->owning_controller; |
1032 | struct isci_host *ihost = sci_object_get_association(scic); | |
1033 | ||
6f231dda | 1034 | /* notify the user. */ |
09d7da13 | 1035 | isci_port_bc_change_received(ihost, sci_port, sci_phy); |
6f231dda DW |
1036 | } |
1037 | ||
1038 | ||
1039 | /** | |
1040 | * This API methhod enables the broadcast change notification from underneath | |
1041 | * hardware. | |
1042 | * @this_port: The port that a BCN had been disabled from. | |
1043 | * | |
1044 | */ | |
1045 | void scic_port_enable_broadcast_change_notification( | |
1046 | struct scic_sds_port *port) | |
1047 | { | |
1048 | struct scic_sds_phy *phy; | |
1049 | u32 register_value; | |
1050 | u8 index; | |
1051 | ||
1052 | /* Loop through all of the phys to enable BCN. */ | |
1053 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
1054 | phy = port->phy_table[index]; | |
1055 | if (phy != NULL) { | |
bc99aa47 CH |
1056 | register_value = |
1057 | readl(&phy->link_layer_registers->link_layer_control); | |
6f231dda DW |
1058 | |
1059 | /* clear the bit by writing 1. */ | |
bc99aa47 CH |
1060 | writel(register_value, |
1061 | &phy->link_layer_registers->link_layer_control); | |
6f231dda DW |
1062 | } |
1063 | } | |
1064 | } | |
1065 | ||
1066 | /* | |
1067 | * **************************************************************************** | |
1068 | * * READY SUBSTATE HANDLERS | |
1069 | * **************************************************************************** */ | |
1070 | ||
1071 | /** | |
1072 | * | |
1073 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
1074 | * object. | |
1075 | * | |
1076 | * This method is the general ready state stop handler for the struct scic_sds_port | |
1077 | * object. This function will transition the ready substate machine to its | |
1078 | * final state. enum sci_status SCI_SUCCESS | |
1079 | */ | |
1080 | static enum sci_status scic_sds_port_ready_substate_stop_handler( | |
1081 | struct sci_base_port *port) | |
1082 | { | |
1083 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
1084 | ||
1085 | sci_base_state_machine_change_state( | |
1086 | &this_port->parent.state_machine, | |
1087 | SCI_BASE_PORT_STATE_STOPPING | |
1088 | ); | |
1089 | ||
1090 | return SCI_SUCCESS; | |
1091 | } | |
1092 | ||
1093 | /** | |
1094 | * | |
1095 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
1096 | * object. | |
1097 | * @device: This is the struct sci_base_remote_device object which is not used in this | |
1098 | * function. | |
1099 | * @io_request: This is the struct sci_base_request object which is not used in this | |
1100 | * function. | |
1101 | * | |
1102 | * This method is the general ready substate complete io handler for the | |
1103 | * struct scic_sds_port object. This function decrments the outstanding request count | |
1104 | * for this port object. enum sci_status SCI_SUCCESS | |
1105 | */ | |
1106 | static enum sci_status scic_sds_port_ready_substate_complete_io_handler( | |
1107 | struct scic_sds_port *port, | |
1108 | struct scic_sds_remote_device *device, | |
1109 | struct scic_sds_request *io_request) | |
1110 | { | |
1111 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
1112 | ||
1113 | scic_sds_port_decrement_request_count(this_port); | |
1114 | ||
1115 | return SCI_SUCCESS; | |
1116 | } | |
1117 | ||
1118 | static enum sci_status scic_sds_port_ready_substate_add_phy_handler( | |
1119 | struct sci_base_port *port, | |
1120 | struct sci_base_phy *phy) | |
1121 | { | |
1122 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
1123 | struct scic_sds_phy *this_phy = (struct scic_sds_phy *)phy; | |
1124 | enum sci_status status; | |
1125 | ||
1126 | status = scic_sds_port_set_phy(this_port, this_phy); | |
1127 | ||
1128 | if (status == SCI_SUCCESS) { | |
1129 | scic_sds_port_general_link_up_handler(this_port, this_phy, true); | |
1130 | ||
1131 | this_port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING; | |
1132 | ||
1133 | sci_base_state_machine_change_state( | |
1134 | &this_port->ready_substate_machine, | |
1135 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING | |
1136 | ); | |
1137 | } | |
1138 | ||
1139 | return status; | |
1140 | } | |
1141 | ||
1142 | ||
1143 | static enum sci_status scic_sds_port_ready_substate_remove_phy_handler( | |
1144 | struct sci_base_port *port, | |
1145 | struct sci_base_phy *phy) | |
1146 | { | |
1147 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
1148 | struct scic_sds_phy *this_phy = (struct scic_sds_phy *)phy; | |
1149 | enum sci_status status; | |
1150 | ||
1151 | status = scic_sds_port_clear_phy(this_port, this_phy); | |
1152 | ||
1153 | if (status == SCI_SUCCESS) { | |
1154 | scic_sds_port_deactivate_phy(this_port, this_phy, true); | |
1155 | ||
1156 | this_port->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING; | |
1157 | ||
1158 | sci_base_state_machine_change_state( | |
1159 | &this_port->ready_substate_machine, | |
1160 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING | |
1161 | ); | |
1162 | } | |
1163 | ||
1164 | return status; | |
1165 | } | |
1166 | ||
1167 | /* | |
1168 | * **************************************************************************** | |
1169 | * * READY SUBSTATE WAITING HANDLERS | |
1170 | * **************************************************************************** */ | |
1171 | ||
1172 | /** | |
1173 | * | |
1174 | * @this_port: This is the struct scic_sds_port object that which has a phy that has | |
1175 | * gone link up. | |
1176 | * @the_phy: This is the struct scic_sds_phy object that has gone link up. | |
1177 | * | |
1178 | * This method is the ready waiting substate link up handler for the | |
1179 | * struct scic_sds_port object. This methos will report the link up condition for | |
1180 | * this port and will transition to the ready operational substate. none | |
1181 | */ | |
1182 | static void scic_sds_port_ready_waiting_substate_link_up_handler( | |
1183 | struct scic_sds_port *this_port, | |
1184 | struct scic_sds_phy *the_phy) | |
1185 | { | |
1186 | /* | |
1187 | * Since this is the first phy going link up for the port we can just enable | |
1188 | * it and continue. */ | |
1189 | scic_sds_port_activate_phy(this_port, the_phy, true); | |
1190 | ||
1191 | sci_base_state_machine_change_state( | |
1192 | &this_port->ready_substate_machine, | |
1193 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL | |
1194 | ); | |
1195 | } | |
1196 | ||
1197 | /** | |
1198 | * | |
1199 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
1200 | * object. | |
1201 | * @device: This is the struct sci_base_remote_device object which is not used in this | |
1202 | * request. | |
1203 | * @io_request: This is the struct sci_base_request object which is not used in this | |
1204 | * function. | |
1205 | * | |
1206 | * This method is the ready waiting substate start io handler for the | |
1207 | * struct scic_sds_port object. The port object can not accept new requests so the | |
1208 | * request is failed. enum sci_status SCI_FAILURE_INVALID_STATE | |
1209 | */ | |
1210 | static enum sci_status scic_sds_port_ready_waiting_substate_start_io_handler( | |
1211 | struct scic_sds_port *port, | |
1212 | struct scic_sds_remote_device *device, | |
1213 | struct scic_sds_request *io_request) | |
1214 | { | |
1215 | return SCI_FAILURE_INVALID_STATE; | |
1216 | } | |
1217 | ||
1218 | /* | |
1219 | * **************************************************************************** | |
1220 | * * READY SUBSTATE OPERATIONAL HANDLERS | |
1221 | * **************************************************************************** */ | |
1222 | ||
1223 | /** | |
1224 | * | |
1225 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
1226 | * object. | |
1227 | * @timeout: This is the timeout for the reset request to complete. | |
1228 | * | |
1229 | * This method will casue the port to reset. enum sci_status SCI_SUCCESS | |
1230 | */ | |
09d7da13 DJ |
1231 | static enum |
1232 | sci_status scic_sds_port_ready_operational_substate_reset_handler( | |
1233 | struct sci_base_port *port, | |
1234 | u32 timeout) | |
6f231dda DW |
1235 | { |
1236 | enum sci_status status = SCI_FAILURE_INVALID_PHY; | |
1237 | u32 phy_index; | |
09d7da13 | 1238 | struct scic_sds_port *sci_port = (struct scic_sds_port *)port; |
a7e536c7 | 1239 | struct scic_sds_phy *selected_phy = NULL; |
6f231dda DW |
1240 | |
1241 | ||
1242 | /* Select a phy on which we can send the hard reset request. */ | |
09d7da13 DJ |
1243 | for (phy_index = 0; |
1244 | (phy_index < SCI_MAX_PHYS) && (selected_phy == NULL); | |
1245 | phy_index++) { | |
1246 | selected_phy = sci_port->phy_table[phy_index]; | |
1247 | ||
1248 | if ((selected_phy != NULL) && | |
1249 | !scic_sds_port_active_phy(sci_port, selected_phy)) { | |
1250 | /* | |
1251 | * We found a phy but it is not ready select | |
1252 | * different phy | |
1253 | */ | |
a7e536c7 | 1254 | selected_phy = NULL; |
6f231dda DW |
1255 | } |
1256 | } | |
1257 | ||
1258 | /* If we have a phy then go ahead and start the reset procedure */ | |
a7e536c7 | 1259 | if (selected_phy != NULL) { |
6f231dda DW |
1260 | status = scic_sds_phy_reset(selected_phy); |
1261 | ||
1262 | if (status == SCI_SUCCESS) { | |
09d7da13 DJ |
1263 | isci_timer_start(sci_port->timer_handle, timeout); |
1264 | sci_port->not_ready_reason = | |
1265 | SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED; | |
6f231dda DW |
1266 | |
1267 | sci_base_state_machine_change_state( | |
09d7da13 DJ |
1268 | &sci_port->parent.state_machine, |
1269 | SCI_BASE_PORT_STATE_RESETTING); | |
6f231dda DW |
1270 | } |
1271 | } | |
1272 | ||
1273 | return status; | |
1274 | } | |
1275 | ||
1276 | /** | |
1277 | * scic_sds_port_ready_operational_substate_link_up_handler() - | |
1278 | * @this_port: This is the struct scic_sds_port object that which has a phy that has | |
1279 | * gone link up. | |
1280 | * @the_phy: This is the struct scic_sds_phy object that has gone link up. | |
1281 | * | |
1282 | * This method is the ready operational substate link up handler for the | |
1283 | * struct scic_sds_port object. This function notifies the SCI User that the phy has | |
1284 | * gone link up. none | |
1285 | */ | |
1286 | static void scic_sds_port_ready_operational_substate_link_up_handler( | |
1287 | struct scic_sds_port *this_port, | |
1288 | struct scic_sds_phy *the_phy) | |
1289 | { | |
1290 | scic_sds_port_general_link_up_handler(this_port, the_phy, true); | |
1291 | } | |
1292 | ||
1293 | /** | |
1294 | * scic_sds_port_ready_operational_substate_link_down_handler() - | |
068b2c03 | 1295 | * @sci_port: This is the struct scic_sds_port object that which has a phy that has |
6f231dda | 1296 | * gone link down. |
068b2c03 | 1297 | * @sci_phy: This is the struct scic_sds_phy object that has gone link down. |
6f231dda DW |
1298 | * |
1299 | * This method is the ready operational substate link down handler for the | |
1300 | * struct scic_sds_port object. This function notifies the SCI User that the phy has | |
1301 | * gone link down and if this is the last phy in the port the port will change | |
1302 | * state to the ready waiting substate. none | |
1303 | */ | |
1304 | static void scic_sds_port_ready_operational_substate_link_down_handler( | |
068b2c03 DW |
1305 | struct scic_sds_port *sci_port, |
1306 | struct scic_sds_phy *sci_phy) | |
6f231dda | 1307 | { |
068b2c03 | 1308 | scic_sds_port_deactivate_phy(sci_port, sci_phy, true); |
6f231dda DW |
1309 | |
1310 | /* | |
1311 | * If there are no active phys left in the port, then transition | |
1312 | * the port to the WAITING state until such time as a phy goes | |
1313 | * link up. */ | |
068b2c03 DW |
1314 | if (sci_port->active_phy_mask == 0) |
1315 | sci_base_state_machine_change_state(&sci_port->ready_substate_machine, | |
1316 | SCIC_SDS_PORT_READY_SUBSTATE_WAITING); | |
6f231dda DW |
1317 | } |
1318 | ||
1319 | /** | |
1320 | * | |
1321 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
1322 | * object. | |
1323 | * @device: This is the struct sci_base_remote_device object which is not used in this | |
1324 | * function. | |
1325 | * @io_request: This is the struct sci_base_request object which is not used in this | |
1326 | * function. | |
1327 | * | |
1328 | * This method is the ready operational substate start io handler for the | |
1329 | * struct scic_sds_port object. This function incremetns the outstanding request | |
1330 | * count for this port object. enum sci_status SCI_SUCCESS | |
1331 | */ | |
1332 | static enum sci_status scic_sds_port_ready_operational_substate_start_io_handler( | |
1333 | struct scic_sds_port *port, | |
1334 | struct scic_sds_remote_device *device, | |
1335 | struct scic_sds_request *io_request) | |
1336 | { | |
1337 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
1338 | ||
1339 | scic_sds_port_increment_request_count(this_port); | |
1340 | ||
1341 | return SCI_SUCCESS; | |
1342 | } | |
1343 | ||
1344 | /* | |
1345 | * **************************************************************************** | |
1346 | * * READY SUBSTATE OPERATIONAL HANDLERS | |
1347 | * **************************************************************************** */ | |
1348 | ||
1349 | /** | |
1350 | * scic_sds_port_ready_configuring_substate_add_phy_handler() - | |
1351 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
1352 | * object. | |
1353 | * | |
1354 | * This is the default method for a port add phy request. It will report a | |
1355 | * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE | |
1356 | */ | |
1357 | static enum sci_status scic_sds_port_ready_configuring_substate_add_phy_handler( | |
1358 | struct sci_base_port *port, | |
1359 | struct sci_base_phy *phy) | |
1360 | { | |
1361 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
1362 | struct scic_sds_phy *this_phy = (struct scic_sds_phy *)phy; | |
1363 | enum sci_status status; | |
1364 | ||
1365 | status = scic_sds_port_set_phy(this_port, this_phy); | |
1366 | ||
1367 | if (status == SCI_SUCCESS) { | |
1368 | scic_sds_port_general_link_up_handler(this_port, this_phy, true); | |
1369 | ||
1370 | /* | |
1371 | * Re-enter the configuring state since this may be the last phy in | |
1372 | * the port. */ | |
1373 | sci_base_state_machine_change_state( | |
1374 | &this_port->ready_substate_machine, | |
1375 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING | |
1376 | ); | |
1377 | } | |
1378 | ||
1379 | return status; | |
1380 | } | |
1381 | ||
1382 | /** | |
1383 | * scic_sds_port_ready_configuring_substate_remove_phy_handler() - | |
1384 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
1385 | * object. | |
1386 | * | |
1387 | * This is the default method for a port remove phy request. It will report a | |
1388 | * warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE | |
1389 | */ | |
1390 | static enum sci_status scic_sds_port_ready_configuring_substate_remove_phy_handler( | |
1391 | struct sci_base_port *port, | |
1392 | struct sci_base_phy *phy) | |
1393 | { | |
1394 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
1395 | struct scic_sds_phy *this_phy = (struct scic_sds_phy *)phy; | |
1396 | enum sci_status status; | |
1397 | ||
1398 | status = scic_sds_port_clear_phy(this_port, this_phy); | |
1399 | ||
1400 | if (status == SCI_SUCCESS) { | |
1401 | scic_sds_port_deactivate_phy(this_port, this_phy, true); | |
1402 | ||
1403 | /* | |
1404 | * Re-enter the configuring state since this may be the last phy in | |
1405 | * the port. */ | |
1406 | sci_base_state_machine_change_state( | |
1407 | &this_port->ready_substate_machine, | |
1408 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING | |
1409 | ); | |
1410 | } | |
1411 | ||
1412 | return status; | |
1413 | } | |
1414 | ||
1415 | /** | |
1416 | * scic_sds_port_ready_configuring_substate_complete_io_handler() - | |
1417 | * @port: This is the port that is being requested to complete the io request. | |
1418 | * @device: This is the device on which the io is completing. | |
1419 | * | |
1420 | * This method will decrement the outstanding request count for this port. If | |
1421 | * the request count goes to 0 then the port can be reprogrammed with its new | |
1422 | * phy data. | |
1423 | */ | |
1424 | static enum sci_status scic_sds_port_ready_configuring_substate_complete_io_handler( | |
1425 | struct scic_sds_port *port, | |
1426 | struct scic_sds_remote_device *device, | |
1427 | struct scic_sds_request *io_request) | |
1428 | { | |
1429 | scic_sds_port_decrement_request_count(port); | |
1430 | ||
1431 | if (port->started_request_count == 0) { | |
1432 | sci_base_state_machine_change_state( | |
1433 | &port->ready_substate_machine, | |
1434 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL | |
1435 | ); | |
1436 | } | |
1437 | ||
1438 | return SCI_SUCCESS; | |
1439 | } | |
1440 | ||
35173d57 DW |
1441 | static enum sci_status default_port_handler(struct sci_base_port *base_port, const char *func) |
1442 | { | |
1443 | struct scic_sds_port *sci_port; | |
1444 | ||
1445 | sci_port = container_of(base_port, typeof(*sci_port), parent); | |
1446 | dev_warn(sciport_to_dev(sci_port), | |
1447 | "%s: in wrong state: %d\n", func, | |
1448 | sci_base_state_machine_get_state(&base_port->state_machine)); | |
1449 | return SCI_FAILURE_INVALID_STATE; | |
1450 | } | |
1451 | ||
1452 | static enum sci_status scic_sds_port_default_start_handler(struct sci_base_port *base_port) | |
1453 | { | |
1454 | return default_port_handler(base_port, __func__); | |
1455 | } | |
1456 | ||
1457 | static enum sci_status scic_sds_port_default_stop_handler(struct sci_base_port *base_port) | |
1458 | { | |
1459 | return default_port_handler(base_port, __func__); | |
1460 | } | |
1461 | ||
1462 | static enum sci_status scic_sds_port_default_destruct_handler(struct sci_base_port *base_port) | |
1463 | { | |
1464 | return default_port_handler(base_port, __func__); | |
1465 | } | |
1466 | ||
1467 | static enum sci_status scic_sds_port_default_reset_handler(struct sci_base_port *base_port, | |
1468 | u32 timeout) | |
1469 | { | |
1470 | return default_port_handler(base_port, __func__); | |
1471 | } | |
1472 | ||
1473 | static enum sci_status scic_sds_port_default_add_phy_handler(struct sci_base_port *base_port, | |
1474 | struct sci_base_phy *base_phy) | |
1475 | { | |
1476 | return default_port_handler(base_port, __func__); | |
1477 | } | |
1478 | ||
1479 | static enum sci_status scic_sds_port_default_remove_phy_handler(struct sci_base_port *base_port, | |
1480 | struct sci_base_phy *base_phy) | |
1481 | { | |
1482 | return default_port_handler(base_port, __func__); | |
1483 | } | |
1484 | ||
1485 | /** | |
1486 | * scic_sds_port_default_frame_handler | |
1487 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
1488 | * object. | |
1489 | * | |
1490 | * This is the default method for a port unsolicited frame request. It will | |
1491 | * report a warning and exit. enum sci_status SCI_FAILURE_INVALID_STATE Is it even | |
1492 | * possible to receive an unsolicited frame directed to a port object? It | |
1493 | * seems possible if we implementing virtual functions but until then? | |
1494 | */ | |
1495 | static enum sci_status scic_sds_port_default_frame_handler(struct scic_sds_port *sci_port, | |
1496 | u32 frame_index) | |
1497 | { | |
1498 | struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port); | |
1499 | ||
1500 | default_port_handler(&sci_port->parent, __func__); | |
1501 | scic_sds_controller_release_frame(scic, frame_index); | |
1502 | ||
1503 | return SCI_FAILURE_INVALID_STATE; | |
1504 | } | |
1505 | ||
1506 | static enum sci_status scic_sds_port_default_event_handler(struct scic_sds_port *sci_port, | |
1507 | u32 event_code) | |
1508 | { | |
1509 | return default_port_handler(&sci_port->parent, __func__); | |
1510 | } | |
1511 | ||
1512 | static void scic_sds_port_default_link_up_handler(struct scic_sds_port *sci_port, | |
1513 | struct scic_sds_phy *sci_phy) | |
1514 | { | |
1515 | default_port_handler(&sci_port->parent, __func__); | |
1516 | } | |
1517 | ||
1518 | static void scic_sds_port_default_link_down_handler(struct scic_sds_port *sci_port, | |
1519 | struct scic_sds_phy *sci_phy) | |
1520 | { | |
1521 | default_port_handler(&sci_port->parent, __func__); | |
1522 | } | |
6f231dda | 1523 | |
35173d57 DW |
1524 | static enum sci_status scic_sds_port_default_start_io_handler(struct scic_sds_port *sci_port, |
1525 | struct scic_sds_remote_device *sci_dev, | |
1526 | struct scic_sds_request *sci_req) | |
1527 | { | |
1528 | return default_port_handler(&sci_port->parent, __func__); | |
1529 | } | |
1530 | ||
1531 | static enum sci_status scic_sds_port_default_complete_io_handler(struct scic_sds_port *sci_port, | |
1532 | struct scic_sds_remote_device *sci_dev, | |
1533 | struct scic_sds_request *sci_req) | |
1534 | { | |
1535 | return default_port_handler(&sci_port->parent, __func__); | |
1536 | } | |
1537 | ||
1538 | ||
1539 | ||
1540 | static struct scic_sds_port_state_handler | |
6f231dda DW |
1541 | scic_sds_port_ready_substate_handler_table[SCIC_SDS_PORT_READY_MAX_SUBSTATES] = |
1542 | { | |
1543 | /* SCIC_SDS_PORT_READY_SUBSTATE_WAITING */ | |
1544 | { | |
1545 | { | |
1546 | scic_sds_port_default_start_handler, | |
1547 | scic_sds_port_ready_substate_stop_handler, | |
1548 | scic_sds_port_default_destruct_handler, | |
1549 | scic_sds_port_default_reset_handler, | |
1550 | scic_sds_port_ready_substate_add_phy_handler, | |
1551 | scic_sds_port_default_remove_phy_handler | |
1552 | }, | |
1553 | scic_sds_port_default_frame_handler, | |
1554 | scic_sds_port_default_event_handler, | |
1555 | scic_sds_port_ready_waiting_substate_link_up_handler, | |
1556 | scic_sds_port_default_link_down_handler, | |
1557 | scic_sds_port_ready_waiting_substate_start_io_handler, | |
1558 | scic_sds_port_ready_substate_complete_io_handler, | |
1559 | }, | |
1560 | /* SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL */ | |
1561 | { | |
1562 | { | |
1563 | scic_sds_port_default_start_handler, | |
1564 | scic_sds_port_ready_substate_stop_handler, | |
1565 | scic_sds_port_default_destruct_handler, | |
1566 | scic_sds_port_ready_operational_substate_reset_handler, | |
1567 | scic_sds_port_ready_substate_add_phy_handler, | |
1568 | scic_sds_port_ready_substate_remove_phy_handler | |
1569 | }, | |
1570 | scic_sds_port_default_frame_handler, | |
1571 | scic_sds_port_default_event_handler, | |
1572 | scic_sds_port_ready_operational_substate_link_up_handler, | |
1573 | scic_sds_port_ready_operational_substate_link_down_handler, | |
1574 | scic_sds_port_ready_operational_substate_start_io_handler, | |
1575 | scic_sds_port_ready_substate_complete_io_handler | |
1576 | }, | |
1577 | /* SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING */ | |
1578 | { | |
1579 | { | |
1580 | scic_sds_port_default_start_handler, | |
1581 | scic_sds_port_ready_substate_stop_handler, | |
1582 | scic_sds_port_default_destruct_handler, | |
1583 | scic_sds_port_default_reset_handler, | |
1584 | scic_sds_port_ready_configuring_substate_add_phy_handler, | |
1585 | scic_sds_port_ready_configuring_substate_remove_phy_handler | |
1586 | }, | |
1587 | scic_sds_port_default_frame_handler, | |
1588 | scic_sds_port_default_event_handler, | |
1589 | scic_sds_port_default_link_up_handler, | |
1590 | scic_sds_port_default_link_down_handler, | |
1591 | scic_sds_port_default_start_io_handler, | |
1592 | scic_sds_port_ready_configuring_substate_complete_io_handler | |
1593 | } | |
1594 | }; | |
1595 | ||
6f231dda DW |
1596 | /** |
1597 | * scic_sds_port_set_ready_state_handlers() - | |
1598 | * | |
1599 | * This macro sets the port ready substate handlers. | |
1600 | */ | |
1601 | #define scic_sds_port_set_ready_state_handlers(port, state_id) \ | |
1602 | scic_sds_port_set_state_handlers(\ | |
1603 | port, &scic_sds_port_ready_substate_handler_table[(state_id)] \ | |
1604 | ) | |
1605 | ||
1606 | /* | |
1607 | * ****************************************************************************** | |
1608 | * * PORT STATE PRIVATE METHODS | |
1609 | * ****************************************************************************** */ | |
1610 | ||
1611 | /** | |
1612 | * | |
1613 | * @this_port: This is the struct scic_sds_port object to suspend. | |
1614 | * | |
1615 | * This method will susped the port task scheduler for this port object. none | |
1616 | */ | |
bc99aa47 CH |
1617 | static void |
1618 | scic_sds_port_suspend_port_task_scheduler(struct scic_sds_port *port) | |
6f231dda DW |
1619 | { |
1620 | u32 pts_control_value; | |
6f231dda | 1621 | |
bc99aa47 | 1622 | pts_control_value = readl(&port->port_task_scheduler_registers->control); |
6f231dda | 1623 | pts_control_value |= SCU_PTSxCR_GEN_BIT(SUSPEND); |
bc99aa47 | 1624 | writel(pts_control_value, &port->port_task_scheduler_registers->control); |
6f231dda DW |
1625 | } |
1626 | ||
a8d4b9fe TC |
1627 | /** |
1628 | * scic_sds_port_post_dummy_request() - post dummy/workaround request | |
1629 | * @sci_port: port to post task | |
1630 | * | |
1631 | * Prevent the hardware scheduler from posting new requests to the front | |
1632 | * of the scheduler queue causing a starvation problem for currently | |
1633 | * ongoing requests. | |
1634 | * | |
1635 | */ | |
35173d57 | 1636 | static void scic_sds_port_post_dummy_request(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
1637 | { |
1638 | u32 command; | |
1639 | struct scu_task_context *task_context; | |
1640 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
1641 | u16 tci = sci_port->reserved_tci; | |
1642 | ||
1643 | task_context = scic_sds_controller_get_task_context_buffer(scic, tci); | |
1644 | ||
1645 | task_context->abort = 0; | |
1646 | ||
1647 | command = SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | | |
1648 | sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | | |
1649 | tci; | |
1650 | ||
1651 | scic_sds_controller_post_request(scic, command); | |
1652 | } | |
1653 | ||
1654 | /** | |
1655 | * This routine will abort the dummy request. This will alow the hardware to | |
1656 | * power down parts of the silicon to save power. | |
1657 | * | |
1658 | * @sci_port: The port on which the task must be aborted. | |
1659 | * | |
1660 | */ | |
35173d57 | 1661 | static void scic_sds_port_abort_dummy_request(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
1662 | { |
1663 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
1664 | u16 tci = sci_port->reserved_tci; | |
1665 | struct scu_task_context *tc; | |
1666 | u32 command; | |
1667 | ||
1668 | tc = scic_sds_controller_get_task_context_buffer(scic, tci); | |
1669 | ||
1670 | tc->abort = 1; | |
1671 | ||
1672 | command = SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT | | |
1673 | sci_port->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | | |
1674 | tci; | |
1675 | ||
1676 | scic_sds_controller_post_request(scic, command); | |
1677 | } | |
1678 | ||
6f231dda DW |
1679 | /** |
1680 | * | |
1681 | * @this_port: This is the struct scic_sds_port object to resume. | |
1682 | * | |
1683 | * This method will resume the port task scheduler for this port object. none | |
1684 | */ | |
bc99aa47 CH |
1685 | static void |
1686 | scic_sds_port_resume_port_task_scheduler(struct scic_sds_port *port) | |
6f231dda DW |
1687 | { |
1688 | u32 pts_control_value; | |
1689 | ||
bc99aa47 | 1690 | pts_control_value = readl(&port->port_task_scheduler_registers->control); |
6f231dda | 1691 | pts_control_value &= ~SCU_PTSxCR_GEN_BIT(SUSPEND); |
bc99aa47 | 1692 | writel(pts_control_value, &port->port_task_scheduler_registers->control); |
6f231dda DW |
1693 | } |
1694 | ||
1695 | /* | |
1696 | * ****************************************************************************** | |
1697 | * * PORT READY SUBSTATE METHODS | |
1698 | * ****************************************************************************** */ | |
1699 | ||
1700 | /** | |
1701 | * | |
1702 | * @object: This is the struct sci_base_object which is cast to a struct scic_sds_port object. | |
1703 | * | |
1704 | * This method will perform the actions required by the struct scic_sds_port on | |
1705 | * entering the SCIC_SDS_PORT_READY_SUBSTATE_WAITING. This function checks the | |
1706 | * port for any ready phys. If there is at least one phy in a ready state then | |
1707 | * the port transitions to the ready operational substate. none | |
1708 | */ | |
1709 | static void scic_sds_port_ready_substate_waiting_enter( | |
1710 | struct sci_base_object *object) | |
1711 | { | |
1712 | struct scic_sds_port *this_port = (struct scic_sds_port *)object; | |
1713 | ||
1714 | scic_sds_port_set_ready_state_handlers( | |
1715 | this_port, SCIC_SDS_PORT_READY_SUBSTATE_WAITING | |
1716 | ); | |
1717 | ||
1718 | scic_sds_port_suspend_port_task_scheduler(this_port); | |
1719 | ||
1720 | this_port->not_ready_reason = SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS; | |
1721 | ||
1722 | if (this_port->active_phy_mask != 0) { | |
1723 | /* At least one of the phys on the port is ready */ | |
1724 | sci_base_state_machine_change_state( | |
1725 | &this_port->ready_substate_machine, | |
1726 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL | |
1727 | ); | |
1728 | } | |
1729 | } | |
1730 | ||
1731 | /** | |
1732 | * | |
09d7da13 DJ |
1733 | * @object: This is the struct sci_base_object which is cast to a |
1734 | * struct scic_sds_port object. | |
6f231dda | 1735 | * |
09d7da13 DJ |
1736 | * This function will perform the actions required by the struct scic_sds_port |
1737 | * on entering the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function sets | |
6f231dda DW |
1738 | * the state handlers for the port object, notifies the SCI User that the port |
1739 | * is ready, and resumes port operations. none | |
1740 | */ | |
1741 | static void scic_sds_port_ready_substate_operational_enter( | |
1742 | struct sci_base_object *object) | |
1743 | { | |
1744 | u32 index; | |
09d7da13 DJ |
1745 | struct scic_sds_port *sci_port = (struct scic_sds_port *)object; |
1746 | struct scic_sds_controller *scic = | |
1747 | scic_sds_port_get_controller(sci_port); | |
1748 | struct isci_host *ihost = sci_object_get_association(scic); | |
1749 | struct isci_port *iport = sci_object_get_association(sci_port); | |
6f231dda DW |
1750 | |
1751 | scic_sds_port_set_ready_state_handlers( | |
09d7da13 DJ |
1752 | sci_port, |
1753 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL); | |
6f231dda | 1754 | |
09d7da13 | 1755 | isci_port_ready(ihost, iport); |
6f231dda DW |
1756 | |
1757 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
bc99aa47 CH |
1758 | if (sci_port->phy_table[index]) { |
1759 | writel(sci_port->physical_port_index, | |
1760 | &sci_port->port_pe_configuration_register[ | |
1761 | sci_port->phy_table[index]->phy_index]); | |
1762 | } | |
6f231dda DW |
1763 | } |
1764 | ||
09d7da13 | 1765 | scic_sds_port_update_viit_entry(sci_port); |
6f231dda | 1766 | |
09d7da13 | 1767 | scic_sds_port_resume_port_task_scheduler(sci_port); |
a8d4b9fe | 1768 | |
09d7da13 DJ |
1769 | /* |
1770 | * Post the dummy task for the port so the hardware can schedule | |
a8d4b9fe TC |
1771 | * io correctly |
1772 | */ | |
09d7da13 | 1773 | scic_sds_port_post_dummy_request(sci_port); |
6f231dda DW |
1774 | } |
1775 | ||
1776 | /** | |
1777 | * | |
1778 | * @object: This is the struct sci_base_object which is cast to a struct scic_sds_port object. | |
1779 | * | |
1780 | * This method will perform the actions required by the struct scic_sds_port on | |
1781 | * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports | |
1782 | * the port not ready and suspends the port task scheduler. none | |
1783 | */ | |
1784 | static void scic_sds_port_ready_substate_operational_exit( | |
1785 | struct sci_base_object *object) | |
1786 | { | |
09d7da13 DJ |
1787 | struct scic_sds_port *sci_port = (struct scic_sds_port *)object; |
1788 | struct scic_sds_controller *scic = | |
1789 | scic_sds_port_get_controller(sci_port); | |
1790 | struct isci_host *ihost = sci_object_get_association(scic); | |
1791 | struct isci_port *iport = sci_object_get_association(sci_port); | |
6f231dda | 1792 | |
09d7da13 DJ |
1793 | /* |
1794 | * Kill the dummy task for this port if it has not yet posted | |
1795 | * the hardware will treat this as a NOP and just return abort | |
1796 | * complete. | |
1797 | */ | |
1798 | scic_sds_port_abort_dummy_request(sci_port); | |
27ce51df | 1799 | |
09d7da13 | 1800 | isci_port_not_ready(ihost, iport); |
6f231dda DW |
1801 | } |
1802 | ||
1803 | /* | |
1804 | * ****************************************************************************** | |
1805 | * * PORT READY CONFIGURING METHODS | |
1806 | * ****************************************************************************** */ | |
1807 | ||
1808 | /** | |
1809 | * scic_sds_port_ready_substate_configuring_enter() - | |
09d7da13 DJ |
1810 | * @object: This is the struct sci_base_object which is cast to a |
1811 | * struct scic_sds_port object. | |
6f231dda DW |
1812 | * |
1813 | * This method will perform the actions required by the struct scic_sds_port on | |
1814 | * exiting the SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL. This function reports | |
1815 | * the port not ready and suspends the port task scheduler. none | |
1816 | */ | |
1817 | static void scic_sds_port_ready_substate_configuring_enter( | |
1818 | struct sci_base_object *object) | |
1819 | { | |
09d7da13 DJ |
1820 | struct scic_sds_port *sci_port = (struct scic_sds_port *)object; |
1821 | struct scic_sds_controller *scic = | |
1822 | scic_sds_port_get_controller(sci_port); | |
1823 | struct isci_host *ihost = sci_object_get_association(scic); | |
1824 | struct isci_port *iport = sci_object_get_association(sci_port); | |
6f231dda DW |
1825 | |
1826 | scic_sds_port_set_ready_state_handlers( | |
09d7da13 DJ |
1827 | sci_port, |
1828 | SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING); | |
6f231dda | 1829 | |
09d7da13 DJ |
1830 | if (sci_port->active_phy_mask == 0) { |
1831 | isci_port_not_ready(ihost, iport); | |
6f231dda DW |
1832 | |
1833 | sci_base_state_machine_change_state( | |
09d7da13 DJ |
1834 | &sci_port->ready_substate_machine, |
1835 | SCIC_SDS_PORT_READY_SUBSTATE_WAITING); | |
1836 | } else if (sci_port->started_request_count == 0) | |
6f231dda | 1837 | sci_base_state_machine_change_state( |
09d7da13 DJ |
1838 | &sci_port->ready_substate_machine, |
1839 | SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL); | |
6f231dda DW |
1840 | } |
1841 | ||
1842 | static void scic_sds_port_ready_substate_configuring_exit( | |
1843 | struct sci_base_object *object) | |
1844 | { | |
1845 | struct scic_sds_port *this_port = (struct scic_sds_port *)object; | |
1846 | ||
1847 | scic_sds_port_suspend_port_task_scheduler(this_port); | |
1848 | } | |
1849 | ||
1850 | /* --------------------------------------------------------------------------- */ | |
1851 | ||
35173d57 | 1852 | static const struct sci_base_state scic_sds_port_ready_substate_table[] = { |
6f231dda DW |
1853 | [SCIC_SDS_PORT_READY_SUBSTATE_WAITING] = { |
1854 | .enter_state = scic_sds_port_ready_substate_waiting_enter, | |
1855 | }, | |
1856 | [SCIC_SDS_PORT_READY_SUBSTATE_OPERATIONAL] = { | |
1857 | .enter_state = scic_sds_port_ready_substate_operational_enter, | |
1858 | .exit_state = scic_sds_port_ready_substate_operational_exit | |
1859 | }, | |
1860 | [SCIC_SDS_PORT_READY_SUBSTATE_CONFIGURING] = { | |
1861 | .enter_state = scic_sds_port_ready_substate_configuring_enter, | |
1862 | .exit_state = scic_sds_port_ready_substate_configuring_exit | |
1863 | }, | |
1864 | }; | |
1865 | ||
6f231dda DW |
1866 | /** |
1867 | * | |
1868 | * @port: This is the struct scic_sds_port object on which the io request count will | |
1869 | * be decremented. | |
1870 | * @device: This is the struct scic_sds_remote_device object to which the io request | |
1871 | * is being directed. This parameter is not required to complete this | |
1872 | * operation. | |
1873 | * @io_request: This is the request that is being completed on this port | |
1874 | * object. This parameter is not required to complete this operation. | |
1875 | * | |
1876 | * This is a general complete io request handler for the struct scic_sds_port object. | |
1877 | * enum sci_status SCI_SUCCESS | |
1878 | */ | |
1879 | static enum sci_status scic_sds_port_general_complete_io_handler( | |
1880 | struct scic_sds_port *port, | |
1881 | struct scic_sds_remote_device *device, | |
1882 | struct scic_sds_request *io_request) | |
1883 | { | |
1884 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
1885 | ||
1886 | scic_sds_port_decrement_request_count(this_port); | |
1887 | ||
1888 | return SCI_SUCCESS; | |
1889 | } | |
1890 | ||
6f231dda | 1891 | /** |
a8d4b9fe | 1892 | * scic_sds_port_stopped_state_start_handler() - stop a port from "started" |
6f231dda | 1893 | * |
09d7da13 DJ |
1894 | * @port: This is the struct sci_base_port object which is cast into a |
1895 | * struct scic_sds_port object. | |
6f231dda | 1896 | * |
09d7da13 DJ |
1897 | * This function takes the struct scic_sds_port from a stopped state and |
1898 | * attempts to start it. To start a port it must have no assiged devices and | |
1899 | * it must have at least one phy assigned to it. If those conditions are | |
1900 | * met then the port can transition to the ready state. | |
1901 | * enum sci_status | |
1902 | * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION | |
1903 | * This struct scic_sds_port object could not be started because the port | |
1904 | * configuration is not valid. | |
1905 | * SCI_SUCCESS | |
1906 | * the start request is successful and the struct scic_sds_port object | |
1907 | * has transitioned to the SCI_BASE_PORT_STATE_READY. | |
6f231dda | 1908 | */ |
09d7da13 DJ |
1909 | static enum sci_status |
1910 | scic_sds_port_stopped_state_start_handler(struct sci_base_port *base_port) | |
6f231dda | 1911 | { |
09d7da13 DJ |
1912 | struct scic_sds_port *sci_port = |
1913 | container_of(base_port, typeof(*sci_port), parent); | |
a8d4b9fe | 1914 | struct scic_sds_controller *scic = sci_port->owning_controller; |
09d7da13 | 1915 | struct isci_host *ihost = sci_object_get_association(scic); |
a8d4b9fe | 1916 | enum sci_status status = SCI_SUCCESS; |
6f231dda | 1917 | u32 phy_mask; |
6f231dda | 1918 | |
a8d4b9fe | 1919 | if (sci_port->assigned_device_count > 0) { |
6f231dda | 1920 | /* |
09d7da13 DJ |
1921 | * @todo This is a start failure operation because |
1922 | * there are still devices assigned to this port. | |
1923 | * There must be no devices assigned to a port on a | |
1924 | * start operation. | |
1925 | */ | |
6f231dda DW |
1926 | return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION; |
1927 | } | |
1928 | ||
09d7da13 DJ |
1929 | sci_port->timer_handle = |
1930 | isci_timer_create(ihost, | |
1931 | sci_port, | |
1932 | scic_sds_port_timeout_handler); | |
6f231dda | 1933 | |
a8d4b9fe TC |
1934 | if (!sci_port->timer_handle) |
1935 | return SCI_FAILURE_INSUFFICIENT_RESOURCES; | |
6f231dda | 1936 | |
a8d4b9fe | 1937 | if (sci_port->reserved_rni == SCU_DUMMY_INDEX) { |
09d7da13 DJ |
1938 | u16 rni = scic_sds_remote_node_table_allocate_remote_node( |
1939 | &scic->available_remote_nodes, 1); | |
a8d4b9fe TC |
1940 | |
1941 | if (rni != SCU_DUMMY_INDEX) | |
1942 | scic_sds_port_construct_dummy_rnc(sci_port, rni); | |
1943 | else | |
1944 | status = SCI_FAILURE_INSUFFICIENT_RESOURCES; | |
1945 | sci_port->reserved_rni = rni; | |
1946 | } | |
1947 | ||
1948 | if (sci_port->reserved_tci == SCU_DUMMY_INDEX) { | |
1949 | /* Allocate a TCI and remove the sequence nibble */ | |
1950 | u16 tci = scic_controller_allocate_io_tag(scic); | |
1951 | ||
1952 | if (tci != SCU_DUMMY_INDEX) | |
1953 | scic_sds_port_construct_dummy_task(sci_port, tci); | |
1954 | else | |
1955 | status = SCI_FAILURE_INSUFFICIENT_RESOURCES; | |
1956 | sci_port->reserved_tci = tci; | |
1957 | } | |
1958 | ||
1959 | if (status == SCI_SUCCESS) { | |
1960 | phy_mask = scic_sds_port_get_phys(sci_port); | |
1961 | ||
1962 | /* | |
1963 | * There are one or more phys assigned to this port. Make sure | |
1964 | * the port's phy mask is in fact legal and supported by the | |
1965 | * silicon. | |
1966 | */ | |
1967 | if (scic_sds_port_is_phy_mask_valid(sci_port, phy_mask) == true) { | |
068b2c03 DW |
1968 | sci_base_state_machine_change_state(&base_port->state_machine, |
1969 | SCI_BASE_PORT_STATE_READY); | |
a8d4b9fe TC |
1970 | |
1971 | return SCI_SUCCESS; | |
1972 | } else | |
1973 | status = SCI_FAILURE; | |
6f231dda DW |
1974 | } |
1975 | ||
a8d4b9fe TC |
1976 | if (status != SCI_SUCCESS) |
1977 | scic_sds_port_destroy_dummy_resources(sci_port); | |
1978 | ||
1979 | return status; | |
6f231dda DW |
1980 | } |
1981 | ||
1982 | /** | |
1983 | * | |
1984 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
1985 | * object. | |
1986 | * | |
1987 | * This method takes the struct scic_sds_port that is in a stopped state and handles a | |
1988 | * stop request. This function takes no action. enum sci_status SCI_SUCCESS the | |
1989 | * stop request is successful as the struct scic_sds_port object is already stopped. | |
1990 | */ | |
1991 | static enum sci_status scic_sds_port_stopped_state_stop_handler( | |
1992 | struct sci_base_port *port) | |
1993 | { | |
1994 | /* We are already stopped so there is nothing to do here */ | |
1995 | return SCI_SUCCESS; | |
1996 | } | |
1997 | ||
1998 | /** | |
1999 | * | |
2000 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
2001 | * object. | |
2002 | * | |
2003 | * This method takes the struct scic_sds_port that is in a stopped state and handles | |
2004 | * the destruct request. The stopped state is the only state in which the | |
2005 | * struct scic_sds_port can be destroyed. This function causes the port object to | |
2006 | * transition to the SCI_BASE_PORT_STATE_FINAL. enum sci_status SCI_SUCCESS | |
2007 | */ | |
2008 | static enum sci_status scic_sds_port_stopped_state_destruct_handler( | |
2009 | struct sci_base_port *port) | |
2010 | { | |
2011 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
2012 | ||
2013 | sci_base_state_machine_stop(&this_port->parent.state_machine); | |
2014 | ||
2015 | return SCI_SUCCESS; | |
2016 | } | |
2017 | ||
2018 | /** | |
2019 | * | |
2020 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
2021 | * object. | |
2022 | * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy | |
2023 | * object. | |
2024 | * | |
2025 | * This method takes the struct scic_sds_port that is in a stopped state and handles | |
2026 | * the add phy request. In MPC mode the only time a phy can be added to a port | |
2027 | * is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status | |
2028 | * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not | |
2029 | * be added to the port. SCI_SUCCESS if the phy is added to the port. | |
2030 | */ | |
2031 | static enum sci_status scic_sds_port_stopped_state_add_phy_handler( | |
2032 | struct sci_base_port *port, | |
2033 | struct sci_base_phy *phy) | |
2034 | { | |
2035 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
2036 | struct scic_sds_phy *this_phy = (struct scic_sds_phy *)phy; | |
2037 | struct sci_sas_address port_sas_address; | |
2038 | ||
2039 | /* Read the port assigned SAS Address if there is one */ | |
2040 | scic_sds_port_get_sas_address(this_port, &port_sas_address); | |
2041 | ||
2042 | if (port_sas_address.high != 0 && port_sas_address.low != 0) { | |
2043 | struct sci_sas_address phy_sas_address; | |
2044 | ||
2045 | /* | |
2046 | * Make sure that the PHY SAS Address matches the SAS Address | |
2047 | * for this port. */ | |
2048 | scic_sds_phy_get_sas_address(this_phy, &phy_sas_address); | |
2049 | ||
2050 | if ( | |
2051 | (port_sas_address.high != phy_sas_address.high) | |
2052 | || (port_sas_address.low != phy_sas_address.low) | |
2053 | ) { | |
2054 | return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION; | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | return scic_sds_port_set_phy(this_port, this_phy); | |
2059 | } | |
2060 | ||
2061 | ||
2062 | /** | |
2063 | * | |
2064 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
2065 | * object. | |
2066 | * @phy: This is the struct sci_base_phy object which is cast into a struct scic_sds_phy | |
2067 | * object. | |
2068 | * | |
2069 | * This method takes the struct scic_sds_port that is in a stopped state and handles | |
2070 | * the remove phy request. In MPC mode the only time a phy can be removed from | |
2071 | * a port is in the SCI_BASE_PORT_STATE_STOPPED. enum sci_status | |
2072 | * SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION is returned when the phy can not | |
2073 | * be added to the port. SCI_SUCCESS if the phy is added to the port. | |
2074 | */ | |
2075 | static enum sci_status scic_sds_port_stopped_state_remove_phy_handler( | |
2076 | struct sci_base_port *port, | |
2077 | struct sci_base_phy *phy) | |
2078 | { | |
2079 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
2080 | struct scic_sds_phy *this_phy = (struct scic_sds_phy *)phy; | |
2081 | ||
2082 | return scic_sds_port_clear_phy(this_port, this_phy); | |
2083 | } | |
2084 | ||
2085 | /* | |
2086 | * **************************************************************************** | |
2087 | * * READY STATE HANDLERS | |
2088 | * **************************************************************************** */ | |
2089 | ||
2090 | /* | |
2091 | * **************************************************************************** | |
2092 | * * RESETTING STATE HANDLERS | |
2093 | * **************************************************************************** */ | |
2094 | ||
2095 | /* | |
2096 | * **************************************************************************** | |
2097 | * * STOPPING STATE HANDLERS | |
2098 | * **************************************************************************** */ | |
2099 | ||
2100 | /** | |
2101 | * | |
2102 | * @port: This is the struct scic_sds_port object on which the io request count will | |
2103 | * be decremented. | |
2104 | * @device: This is the struct scic_sds_remote_device object to which the io request | |
2105 | * is being directed. This parameter is not required to complete this | |
2106 | * operation. | |
2107 | * @io_request: This is the request that is being completed on this port | |
2108 | * object. This parameter is not required to complete this operation. | |
2109 | * | |
2110 | * This method takes the struct scic_sds_port that is in a stopping state and handles | |
2111 | * the complete io request. Should the request count reach 0 then the port | |
2112 | * object will transition to the stopped state. enum sci_status SCI_SUCCESS | |
2113 | */ | |
2114 | static enum sci_status scic_sds_port_stopping_state_complete_io_handler( | |
068b2c03 | 2115 | struct scic_sds_port *sci_port, |
6f231dda DW |
2116 | struct scic_sds_remote_device *device, |
2117 | struct scic_sds_request *io_request) | |
2118 | { | |
068b2c03 | 2119 | scic_sds_port_decrement_request_count(sci_port); |
6f231dda | 2120 | |
068b2c03 DW |
2121 | if (sci_port->started_request_count == 0) { |
2122 | sci_base_state_machine_change_state(&sci_port->parent.state_machine, | |
2123 | SCI_BASE_PORT_STATE_STOPPED); | |
6f231dda DW |
2124 | } |
2125 | ||
2126 | return SCI_SUCCESS; | |
2127 | } | |
2128 | ||
2129 | /* | |
2130 | * **************************************************************************** | |
2131 | * * RESETTING STATE HANDLERS | |
2132 | * **************************************************************************** */ | |
2133 | ||
2134 | /** | |
2135 | * | |
2136 | * @port: This is the port object which is being requested to stop. | |
2137 | * | |
2138 | * This method will stop a failed port. This causes a transition to the | |
2139 | * stopping state. enum sci_status SCI_SUCCESS | |
2140 | */ | |
2141 | static enum sci_status scic_sds_port_reset_state_stop_handler( | |
2142 | struct sci_base_port *port) | |
2143 | { | |
2144 | struct scic_sds_port *this_port = (struct scic_sds_port *)port; | |
2145 | ||
2146 | sci_base_state_machine_change_state( | |
2147 | &this_port->parent.state_machine, | |
2148 | SCI_BASE_PORT_STATE_STOPPING | |
2149 | ); | |
2150 | ||
2151 | return SCI_SUCCESS; | |
2152 | } | |
2153 | ||
2154 | /** | |
2155 | * | |
2156 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
2157 | * object. | |
2158 | * | |
2159 | * This method will transition a failed port to its ready state. The port | |
2160 | * failed because a hard reset request timed out but at some time later one or | |
2161 | * more phys in the port became ready. enum sci_status SCI_SUCCESS | |
2162 | */ | |
2163 | static void scic_sds_port_reset_state_link_up_handler( | |
2164 | struct scic_sds_port *this_port, | |
2165 | struct scic_sds_phy *phy) | |
2166 | { | |
2167 | /* | |
2168 | * / @todo We should make sure that the phy that has gone link up is the same | |
2169 | * / one on which we sent the reset. It is possible that the phy on | |
2170 | * / which we sent the reset is not the one that has gone link up and we | |
2171 | * / want to make sure that phy being reset comes back. Consider the | |
2172 | * / case where a reset is sent but before the hardware processes the | |
2173 | * / reset it get a link up on the port because of a hot plug event. | |
2174 | * / because of the reset request this phy will go link down almost | |
2175 | * / immediately. */ | |
2176 | ||
2177 | /* | |
2178 | * In the resetting state we don't notify the user regarding | |
2179 | * link up and link down notifications. */ | |
2180 | scic_sds_port_general_link_up_handler(this_port, phy, false); | |
2181 | } | |
2182 | ||
2183 | /** | |
2184 | * | |
2185 | * @port: This is the struct sci_base_port object which is cast into a struct scic_sds_port | |
2186 | * object. | |
2187 | * | |
2188 | * This method process link down notifications that occur during a port reset | |
2189 | * operation. Link downs can occur during the reset operation. enum sci_status | |
2190 | * SCI_SUCCESS | |
2191 | */ | |
2192 | static void scic_sds_port_reset_state_link_down_handler( | |
2193 | struct scic_sds_port *this_port, | |
2194 | struct scic_sds_phy *phy) | |
2195 | { | |
2196 | /* | |
2197 | * In the resetting state we don't notify the user regarding | |
2198 | * link up and link down notifications. */ | |
2199 | scic_sds_port_deactivate_phy(this_port, phy, false); | |
2200 | } | |
2201 | ||
35173d57 | 2202 | static struct scic_sds_port_state_handler |
6f231dda DW |
2203 | scic_sds_port_state_handler_table[SCI_BASE_PORT_MAX_STATES] = |
2204 | { | |
2205 | /* SCI_BASE_PORT_STATE_STOPPED */ | |
2206 | { | |
2207 | { | |
2208 | scic_sds_port_stopped_state_start_handler, | |
2209 | scic_sds_port_stopped_state_stop_handler, | |
2210 | scic_sds_port_stopped_state_destruct_handler, | |
2211 | scic_sds_port_default_reset_handler, | |
2212 | scic_sds_port_stopped_state_add_phy_handler, | |
2213 | scic_sds_port_stopped_state_remove_phy_handler | |
2214 | }, | |
2215 | scic_sds_port_default_frame_handler, | |
2216 | scic_sds_port_default_event_handler, | |
2217 | scic_sds_port_default_link_up_handler, | |
2218 | scic_sds_port_default_link_down_handler, | |
2219 | scic_sds_port_default_start_io_handler, | |
2220 | scic_sds_port_default_complete_io_handler | |
2221 | }, | |
2222 | /* SCI_BASE_PORT_STATE_STOPPING */ | |
2223 | { | |
2224 | { | |
2225 | scic_sds_port_default_start_handler, | |
2226 | scic_sds_port_default_stop_handler, | |
2227 | scic_sds_port_default_destruct_handler, | |
2228 | scic_sds_port_default_reset_handler, | |
2229 | scic_sds_port_default_add_phy_handler, | |
2230 | scic_sds_port_default_remove_phy_handler | |
2231 | }, | |
2232 | scic_sds_port_default_frame_handler, | |
2233 | scic_sds_port_default_event_handler, | |
2234 | scic_sds_port_default_link_up_handler, | |
2235 | scic_sds_port_default_link_down_handler, | |
2236 | scic_sds_port_default_start_io_handler, | |
2237 | scic_sds_port_stopping_state_complete_io_handler | |
2238 | }, | |
2239 | /* SCI_BASE_PORT_STATE_READY */ | |
2240 | { | |
2241 | { | |
2242 | scic_sds_port_default_start_handler, | |
2243 | scic_sds_port_default_stop_handler, | |
2244 | scic_sds_port_default_destruct_handler, | |
2245 | scic_sds_port_default_reset_handler, | |
2246 | scic_sds_port_default_add_phy_handler, | |
2247 | scic_sds_port_default_remove_phy_handler | |
2248 | }, | |
2249 | scic_sds_port_default_frame_handler, | |
2250 | scic_sds_port_default_event_handler, | |
2251 | scic_sds_port_default_link_up_handler, | |
2252 | scic_sds_port_default_link_down_handler, | |
2253 | scic_sds_port_default_start_io_handler, | |
2254 | scic_sds_port_general_complete_io_handler | |
2255 | }, | |
2256 | /* SCI_BASE_PORT_STATE_RESETTING */ | |
2257 | { | |
2258 | { | |
2259 | scic_sds_port_default_start_handler, | |
2260 | scic_sds_port_reset_state_stop_handler, | |
2261 | scic_sds_port_default_destruct_handler, | |
2262 | scic_sds_port_default_reset_handler, | |
2263 | scic_sds_port_default_add_phy_handler, | |
2264 | scic_sds_port_default_remove_phy_handler | |
2265 | }, | |
2266 | scic_sds_port_default_frame_handler, | |
2267 | scic_sds_port_default_event_handler, | |
2268 | scic_sds_port_reset_state_link_up_handler, | |
2269 | scic_sds_port_reset_state_link_down_handler, | |
2270 | scic_sds_port_default_start_io_handler, | |
2271 | scic_sds_port_general_complete_io_handler | |
2272 | }, | |
2273 | /* SCI_BASE_PORT_STATE_FAILED */ | |
2274 | { | |
2275 | { | |
2276 | scic_sds_port_default_start_handler, | |
2277 | scic_sds_port_default_stop_handler, | |
2278 | scic_sds_port_default_destruct_handler, | |
2279 | scic_sds_port_default_reset_handler, | |
2280 | scic_sds_port_default_add_phy_handler, | |
2281 | scic_sds_port_default_remove_phy_handler | |
2282 | }, | |
2283 | scic_sds_port_default_frame_handler, | |
2284 | scic_sds_port_default_event_handler, | |
2285 | scic_sds_port_default_link_up_handler, | |
2286 | scic_sds_port_default_link_down_handler, | |
2287 | scic_sds_port_default_start_io_handler, | |
2288 | scic_sds_port_general_complete_io_handler | |
2289 | } | |
2290 | }; | |
2291 | ||
2292 | /* | |
2293 | * ****************************************************************************** | |
2294 | * * PORT STATE PRIVATE METHODS | |
2295 | * ****************************************************************************** */ | |
2296 | ||
2297 | /** | |
2298 | * | |
2299 | * @this_port: This is the port object which to suspend. | |
2300 | * | |
2301 | * This method will enable the SCU Port Task Scheduler for this port object but | |
2302 | * will leave the port task scheduler in a suspended state. none | |
2303 | */ | |
bc99aa47 CH |
2304 | static void |
2305 | scic_sds_port_enable_port_task_scheduler(struct scic_sds_port *port) | |
6f231dda DW |
2306 | { |
2307 | u32 pts_control_value; | |
2308 | ||
bc99aa47 | 2309 | pts_control_value = readl(&port->port_task_scheduler_registers->control); |
6f231dda | 2310 | pts_control_value |= SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND); |
bc99aa47 | 2311 | writel(pts_control_value, &port->port_task_scheduler_registers->control); |
6f231dda DW |
2312 | } |
2313 | ||
2314 | /** | |
2315 | * | |
2316 | * @this_port: This is the port object which to resume. | |
2317 | * | |
2318 | * This method will disable the SCU port task scheduler for this port object. | |
2319 | * none | |
2320 | */ | |
bc99aa47 CH |
2321 | static void |
2322 | scic_sds_port_disable_port_task_scheduler(struct scic_sds_port *port) | |
6f231dda DW |
2323 | { |
2324 | u32 pts_control_value; | |
2325 | ||
bc99aa47 CH |
2326 | pts_control_value = readl(&port->port_task_scheduler_registers->control); |
2327 | pts_control_value &= | |
2328 | ~(SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND)); | |
2329 | writel(pts_control_value, &port->port_task_scheduler_registers->control); | |
6f231dda DW |
2330 | } |
2331 | ||
35173d57 | 2332 | static void scic_sds_port_post_dummy_remote_node(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
2333 | { |
2334 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
2335 | u8 phys_index = sci_port->physical_port_index; | |
2336 | union scu_remote_node_context *rnc; | |
2337 | u16 rni = sci_port->reserved_rni; | |
2338 | u32 command; | |
2339 | ||
2340 | rnc = &scic->remote_node_context_table[rni]; | |
2341 | rnc->ssp.is_valid = true; | |
2342 | ||
2343 | command = SCU_CONTEXT_COMMAND_POST_RNC_32 | | |
2344 | phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni; | |
2345 | ||
2346 | scic_sds_controller_post_request(scic, command); | |
2347 | ||
2348 | /* ensure hardware has seen the post rnc command and give it | |
2349 | * ample time to act before sending the suspend | |
2350 | */ | |
bc99aa47 | 2351 | readl(&scic->smu_registers->interrupt_status); /* flush */ |
a8d4b9fe TC |
2352 | udelay(10); |
2353 | ||
2354 | command = SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX | | |
2355 | phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni; | |
2356 | ||
2357 | scic_sds_controller_post_request(scic, command); | |
2358 | } | |
2359 | ||
35173d57 | 2360 | static void scic_sds_port_invalidate_dummy_remote_node(struct scic_sds_port *sci_port) |
a8d4b9fe TC |
2361 | { |
2362 | struct scic_sds_controller *scic = sci_port->owning_controller; | |
2363 | u8 phys_index = sci_port->physical_port_index; | |
2364 | union scu_remote_node_context *rnc; | |
2365 | u16 rni = sci_port->reserved_rni; | |
2366 | u32 command; | |
2367 | ||
2368 | rnc = &scic->remote_node_context_table[rni]; | |
2369 | ||
2370 | rnc->ssp.is_valid = false; | |
2371 | ||
27ce51df DW |
2372 | /* ensure the preceding tc abort request has reached the |
2373 | * controller and give it ample time to act before posting the rnc | |
2374 | * invalidate | |
2375 | */ | |
bc99aa47 | 2376 | readl(&scic->smu_registers->interrupt_status); /* flush */ |
27ce51df DW |
2377 | udelay(10); |
2378 | ||
a8d4b9fe TC |
2379 | command = SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE | |
2380 | phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni; | |
2381 | ||
2382 | scic_sds_controller_post_request(scic, command); | |
2383 | } | |
2384 | ||
6f231dda DW |
2385 | /* |
2386 | * ****************************************************************************** | |
2387 | * * PORT STATE METHODS | |
2388 | * ****************************************************************************** */ | |
2389 | ||
2390 | /** | |
2391 | * | |
2392 | * @object: This is the struct sci_base_object which is cast to a struct scic_sds_port object. | |
2393 | * | |
2394 | * This method will perform the actions required by the struct scic_sds_port on | |
2395 | * entering the SCI_BASE_PORT_STATE_STOPPED. This function sets the stopped | |
2396 | * state handlers for the struct scic_sds_port object and disables the port task | |
2397 | * scheduler in the hardware. none | |
2398 | */ | |
2399 | static void scic_sds_port_stopped_state_enter( | |
2400 | struct sci_base_object *object) | |
2401 | { | |
2402 | struct scic_sds_port *this_port; | |
2403 | ||
2404 | this_port = (struct scic_sds_port *)object; | |
2405 | ||
2406 | scic_sds_port_set_base_state_handlers( | |
2407 | this_port, SCI_BASE_PORT_STATE_STOPPED | |
2408 | ); | |
2409 | ||
2410 | if ( | |
2411 | SCI_BASE_PORT_STATE_STOPPING | |
2412 | == this_port->parent.state_machine.previous_state_id | |
2413 | ) { | |
2414 | /* | |
2415 | * If we enter this state becasuse of a request to stop | |
2416 | * the port then we want to disable the hardwares port | |
2417 | * task scheduler. */ | |
2418 | scic_sds_port_disable_port_task_scheduler(this_port); | |
2419 | } | |
2420 | } | |
2421 | ||
2422 | /** | |
2423 | * | |
2424 | * @object: This is the struct sci_base_object which is cast to a struct scic_sds_port object. | |
2425 | * | |
2426 | * This method will perform the actions required by the struct scic_sds_port on | |
2427 | * exiting the SCI_BASE_STATE_STOPPED. This function enables the SCU hardware | |
2428 | * port task scheduler. none | |
2429 | */ | |
2430 | static void scic_sds_port_stopped_state_exit( | |
2431 | struct sci_base_object *object) | |
2432 | { | |
2433 | struct scic_sds_port *this_port; | |
2434 | ||
2435 | this_port = (struct scic_sds_port *)object; | |
2436 | ||
2437 | /* Enable and suspend the port task scheduler */ | |
2438 | scic_sds_port_enable_port_task_scheduler(this_port); | |
2439 | } | |
2440 | ||
2441 | /** | |
068b2c03 DW |
2442 | * scic_sds_port_ready_state_enter - |
2443 | * @object: This is the struct sci_base_object which is cast to a struct scic_sds_port object. | |
6f231dda DW |
2444 | * |
2445 | * This method will perform the actions required by the struct scic_sds_port on | |
2446 | * entering the SCI_BASE_PORT_STATE_READY. This function sets the ready state | |
09d7da13 DJ |
2447 | * handlers for the struct scic_sds_port object, reports the port object as |
2448 | * not ready and starts the ready substate machine. none | |
6f231dda | 2449 | */ |
09d7da13 | 2450 | static void scic_sds_port_ready_state_enter(struct sci_base_object *object) |
6f231dda | 2451 | { |
068b2c03 DW |
2452 | struct scic_sds_controller *scic; |
2453 | struct scic_sds_port *sci_port; | |
2454 | struct isci_port *iport; | |
2455 | struct isci_host *ihost; | |
2456 | u32 prev_state; | |
6f231dda | 2457 | |
068b2c03 DW |
2458 | sci_port = container_of(object, typeof(*sci_port), parent.parent); |
2459 | scic = scic_sds_port_get_controller(sci_port); | |
2460 | ihost = sci_object_get_association(scic); | |
2461 | iport = sci_object_get_association(sci_port); | |
6f231dda | 2462 | |
068b2c03 DW |
2463 | /* Put the ready state handlers in place though they will not be there long */ |
2464 | scic_sds_port_set_base_state_handlers(sci_port, SCI_BASE_PORT_STATE_READY); | |
2465 | ||
2466 | prev_state = sci_port->parent.state_machine.previous_state_id; | |
2467 | if (prev_state == SCI_BASE_PORT_STATE_RESETTING) | |
09d7da13 | 2468 | isci_port_hard_reset_complete(iport, SCI_SUCCESS); |
068b2c03 | 2469 | else |
09d7da13 | 2470 | isci_port_not_ready(ihost, iport); |
6f231dda | 2471 | |
a8d4b9fe | 2472 | /* Post and suspend the dummy remote node context for this port. */ |
09d7da13 | 2473 | scic_sds_port_post_dummy_remote_node(sci_port); |
a8d4b9fe | 2474 | |
6f231dda | 2475 | /* Start the ready substate machine */ |
068b2c03 | 2476 | sci_base_state_machine_start(&sci_port->ready_substate_machine); |
6f231dda DW |
2477 | } |
2478 | ||
068b2c03 | 2479 | static void scic_sds_port_ready_state_exit(struct sci_base_object *object) |
6f231dda | 2480 | { |
068b2c03 | 2481 | struct scic_sds_port *sci_port; |
a8d4b9fe | 2482 | |
068b2c03 DW |
2483 | sci_port = container_of(object, typeof(*sci_port), parent.parent); |
2484 | sci_base_state_machine_stop(&sci_port->ready_substate_machine); | |
2485 | scic_sds_port_invalidate_dummy_remote_node(sci_port); | |
6f231dda DW |
2486 | } |
2487 | ||
2488 | /** | |
2489 | * | |
2490 | * @object: This is the struct sci_base_object which is cast to a struct scic_sds_port object. | |
2491 | * | |
2492 | * This method will perform the actions required by the struct scic_sds_port on | |
2493 | * entering the SCI_BASE_PORT_STATE_RESETTING. This function sets the resetting | |
2494 | * state handlers for the struct scic_sds_port object. none | |
2495 | */ | |
2496 | static void scic_sds_port_resetting_state_enter( | |
2497 | struct sci_base_object *object) | |
2498 | { | |
2499 | struct scic_sds_port *this_port; | |
2500 | ||
2501 | this_port = (struct scic_sds_port *)object; | |
2502 | ||
2503 | scic_sds_port_set_base_state_handlers( | |
2504 | this_port, SCI_BASE_PORT_STATE_RESETTING | |
2505 | ); | |
6f231dda DW |
2506 | } |
2507 | ||
2508 | /** | |
2509 | * | |
09d7da13 DJ |
2510 | * @object: This is the struct sci_base_object which is cast to a |
2511 | * struct scic_sds_port object. | |
6f231dda | 2512 | * |
09d7da13 DJ |
2513 | * This function will perform the actions required by the |
2514 | * struct scic_sds_port on | |
6f231dda DW |
2515 | * exiting the SCI_BASE_STATE_RESETTING. This function does nothing. none |
2516 | */ | |
09d7da13 | 2517 | static inline void scic_sds_port_resetting_state_exit( |
6f231dda DW |
2518 | struct sci_base_object *object) |
2519 | { | |
09d7da13 | 2520 | struct scic_sds_port *sci_port = (struct scic_sds_port *)object; |
6f231dda | 2521 | |
09d7da13 | 2522 | isci_timer_stop(sci_port->timer_handle); |
6f231dda DW |
2523 | } |
2524 | ||
2525 | /** | |
2526 | * | |
2527 | * @object: This is the struct sci_base_object which is cast to a struct scic_sds_port object. | |
2528 | * | |
2529 | * This method will perform the actions required by the struct scic_sds_port on | |
2530 | * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping | |
2531 | * state handlers for the struct scic_sds_port object. none | |
2532 | */ | |
2533 | static void scic_sds_port_stopping_state_enter( | |
2534 | struct sci_base_object *object) | |
2535 | { | |
2536 | struct scic_sds_port *this_port; | |
2537 | ||
2538 | this_port = (struct scic_sds_port *)object; | |
2539 | ||
2540 | scic_sds_port_set_base_state_handlers( | |
2541 | this_port, SCI_BASE_PORT_STATE_STOPPING | |
2542 | ); | |
2543 | } | |
2544 | ||
2545 | /** | |
2546 | * | |
09d7da13 DJ |
2547 | * @object: This is the struct sci_base_object which is cast to a |
2548 | * struct scic_sds_port object. | |
6f231dda | 2549 | * |
09d7da13 DJ |
2550 | * This function will perform the actions required by the |
2551 | * struct scic_sds_port on | |
6f231dda DW |
2552 | * exiting the SCI_BASE_STATE_STOPPING. This function does nothing. none |
2553 | */ | |
09d7da13 DJ |
2554 | static inline void |
2555 | scic_sds_port_stopping_state_exit(struct sci_base_object *object) | |
6f231dda | 2556 | { |
09d7da13 | 2557 | struct scic_sds_port *sci_port = (struct scic_sds_port *)object; |
6f231dda | 2558 | |
09d7da13 | 2559 | isci_timer_stop(sci_port->timer_handle); |
a8d4b9fe | 2560 | |
09d7da13 | 2561 | scic_sds_port_destroy_dummy_resources(sci_port); |
6f231dda DW |
2562 | } |
2563 | ||
2564 | /** | |
2565 | * | |
09d7da13 DJ |
2566 | * @object: This is the struct sci_base_object which is cast to a |
2567 | * struct scic_sds_port object. | |
6f231dda | 2568 | * |
09d7da13 DJ |
2569 | * This function will perform the actions required by the |
2570 | * struct scic_sds_port on | |
6f231dda DW |
2571 | * entering the SCI_BASE_PORT_STATE_STOPPING. This function sets the stopping |
2572 | * state handlers for the struct scic_sds_port object. none | |
2573 | */ | |
09d7da13 | 2574 | static void scic_sds_port_failed_state_enter(struct sci_base_object *object) |
6f231dda | 2575 | { |
09d7da13 DJ |
2576 | struct scic_sds_port *sci_port = (struct scic_sds_port *)object; |
2577 | struct isci_port *iport = sci_object_get_association(sci_port); | |
6f231dda | 2578 | |
09d7da13 DJ |
2579 | scic_sds_port_set_base_state_handlers(sci_port, |
2580 | SCI_BASE_PORT_STATE_FAILED); | |
6f231dda | 2581 | |
09d7da13 | 2582 | isci_port_hard_reset_complete(iport, SCI_FAILURE_TIMEOUT); |
6f231dda DW |
2583 | } |
2584 | ||
2585 | /* --------------------------------------------------------------------------- */ | |
2586 | ||
35173d57 | 2587 | static const struct sci_base_state scic_sds_port_state_table[] = { |
6f231dda DW |
2588 | [SCI_BASE_PORT_STATE_STOPPED] = { |
2589 | .enter_state = scic_sds_port_stopped_state_enter, | |
2590 | .exit_state = scic_sds_port_stopped_state_exit | |
2591 | }, | |
2592 | [SCI_BASE_PORT_STATE_STOPPING] = { | |
2593 | .enter_state = scic_sds_port_stopping_state_enter, | |
2594 | .exit_state = scic_sds_port_stopping_state_exit | |
2595 | }, | |
2596 | [SCI_BASE_PORT_STATE_READY] = { | |
2597 | .enter_state = scic_sds_port_ready_state_enter, | |
2598 | .exit_state = scic_sds_port_ready_state_exit | |
2599 | }, | |
2600 | [SCI_BASE_PORT_STATE_RESETTING] = { | |
2601 | .enter_state = scic_sds_port_resetting_state_enter, | |
2602 | .exit_state = scic_sds_port_resetting_state_exit | |
2603 | }, | |
2604 | [SCI_BASE_PORT_STATE_FAILED] = { | |
2605 | .enter_state = scic_sds_port_failed_state_enter, | |
2606 | } | |
2607 | }; | |
2608 | ||
35173d57 DW |
2609 | void scic_sds_port_construct(struct scic_sds_port *sci_port, u8 port_index, |
2610 | struct scic_sds_controller *scic) | |
2611 | { | |
2612 | u32 index; | |
2613 | ||
2614 | sci_base_port_construct(&sci_port->parent, scic_sds_port_state_table); | |
2615 | ||
2616 | sci_base_state_machine_construct(&sci_port->ready_substate_machine, | |
2617 | &sci_port->parent.parent, | |
2618 | scic_sds_port_ready_substate_table, | |
2619 | SCIC_SDS_PORT_READY_SUBSTATE_WAITING); | |
2620 | ||
2621 | sci_port->logical_port_index = SCIC_SDS_DUMMY_PORT; | |
2622 | sci_port->physical_port_index = port_index; | |
2623 | sci_port->active_phy_mask = 0; | |
2624 | ||
2625 | sci_port->owning_controller = scic; | |
2626 | ||
2627 | sci_port->started_request_count = 0; | |
2628 | sci_port->assigned_device_count = 0; | |
2629 | ||
2630 | sci_port->reserved_rni = SCU_DUMMY_INDEX; | |
2631 | sci_port->reserved_tci = SCU_DUMMY_INDEX; | |
2632 | ||
2633 | sci_port->timer_handle = NULL; | |
2634 | ||
2635 | sci_port->port_task_scheduler_registers = NULL; | |
2636 | ||
2637 | for (index = 0; index < SCI_MAX_PHYS; index++) | |
2638 | sci_port->phy_table[index] = NULL; | |
2639 | } |