1 /*-
2 * Copyright 2016-2021 Microchip Technology, Inc. and/or its subsidiaries.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26
27 #include"smartpqi_includes.h"
28
29 /*
30 * Function to rescan the devices connected to adapter.
31 */
32 int
pqisrc_rescan_devices(pqisrc_softstate_t * softs)33 pqisrc_rescan_devices(pqisrc_softstate_t *softs)
34 {
35 int ret;
36
37 DBG_FUNC("IN\n");
38
39 os_sema_lock(&softs->scan_lock);
40
41 ret = pqisrc_scan_devices(softs);
42
43 os_sema_unlock(&softs->scan_lock);
44
45 DBG_FUNC("OUT\n");
46
47 return ret;
48 }
49
50 void
pqisrc_wait_for_rescan_complete(pqisrc_softstate_t * softs)51 pqisrc_wait_for_rescan_complete(pqisrc_softstate_t *softs)
52 {
53 os_sema_lock(&softs->scan_lock);
54 os_sema_unlock(&softs->scan_lock);
55 }
56
57 /*
58 * Subroutine to acknowledge the events processed by the driver to the adapter.
59 */
60 static void
pqisrc_acknowledge_event(pqisrc_softstate_t * softs,struct pqi_event * event)61 pqisrc_acknowledge_event(pqisrc_softstate_t *softs,
62 struct pqi_event *event)
63 {
64
65 pqi_event_acknowledge_request_t request;
66 ib_queue_t *ib_q = &softs->op_raid_ib_q[0];
67 int tmo = PQISRC_EVENT_ACK_RESP_TIMEOUT;
68 memset(&request,0,sizeof(request));
69
70 DBG_FUNC("IN\n");
71
72 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
73 request.header.iu_length = (sizeof(pqi_event_acknowledge_request_t) -
74 PQI_REQUEST_HEADER_LENGTH);
75 request.event_type = event->event_type;
76 request.event_id = event->event_id;
77 request.additional_event_id = event->additional_event_id;
78
79 /* Submit Event Acknowledge */
80
81 pqisrc_submit_cmnd(softs, ib_q, &request);
82
83 /*
84 * We have to special-case this type of request because the firmware
85 * does not generate an interrupt when this type of request completes.
86 * Therefore, we have to poll until we see that the firmware has
87 * consumed the request before we move on.
88 */
89
90 COND_WAIT(((ib_q->pi_local) == *(ib_q->ci_virt_addr)), tmo);
91 if (tmo <= 0) {
92 DBG_ERR("wait for event acknowledge timed out\n");
93 DBG_ERR("tmo : %d\n",tmo);
94 }
95
96 DBG_FUNC(" OUT\n");
97 }
98
99 /*
100 * Acknowledge processed events to the adapter.
101 */
102 void
pqisrc_ack_all_events(void * arg1)103 pqisrc_ack_all_events(void *arg1)
104 {
105 int i;
106 struct pqi_event *pending_event;
107 pqisrc_softstate_t *softs = (pqisrc_softstate_t*)arg1;
108
109 DBG_FUNC(" IN\n");
110
111
112 pending_event = &softs->pending_events[0];
113 for (i=0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
114 if (pending_event->pending == true) {
115 pending_event->pending = false;
116 pqisrc_acknowledge_event(softs, pending_event);
117 }
118 pending_event++;
119 }
120
121 /* Rescan devices except for heartbeat event */
122 if ((pqisrc_rescan_devices(softs)) != PQI_STATUS_SUCCESS) {
123 DBG_ERR(" Failed to Re-Scan devices\n ");
124 }
125 DBG_FUNC(" OUT\n");
126
127 }
128
129 /*
130 * Get event index from event type to validate the type of event.
131 */
132 static int
pqisrc_event_type_to_event_index(unsigned event_type)133 pqisrc_event_type_to_event_index(unsigned event_type)
134 {
135 int index;
136
137 switch (event_type) {
138 case PQI_EVENT_TYPE_HOTPLUG:
139 index = PQI_EVENT_HOTPLUG;
140 break;
141 case PQI_EVENT_TYPE_HARDWARE:
142 index = PQI_EVENT_HARDWARE;
143 break;
144 case PQI_EVENT_TYPE_PHYSICAL_DEVICE:
145 index = PQI_EVENT_PHYSICAL_DEVICE;
146 break;
147 case PQI_EVENT_TYPE_LOGICAL_DEVICE:
148 index = PQI_EVENT_LOGICAL_DEVICE;
149 break;
150 case PQI_EVENT_TYPE_AIO_STATE_CHANGE:
151 index = PQI_EVENT_AIO_STATE_CHANGE;
152 break;
153 case PQI_EVENT_TYPE_AIO_CONFIG_CHANGE:
154 index = PQI_EVENT_AIO_CONFIG_CHANGE;
155 break;
156 default:
157 index = -1;
158 break;
159 }
160
161 return index;
162 }
163
164 /*
165 * Function used to process the events supported by the adapter.
166 */
167 int
pqisrc_process_event_intr_src(pqisrc_softstate_t * softs,int obq_id)168 pqisrc_process_event_intr_src(pqisrc_softstate_t *softs,int obq_id)
169 {
170 uint32_t obq_pi,obq_ci;
171 pqi_event_response_t response;
172 ob_queue_t *event_q;
173 struct pqi_event *pending_event;
174 boolean_t need_delayed_work = false;
175
176 DBG_FUNC(" IN\n");
177
178 event_q = &softs->event_q;
179 obq_ci = event_q->ci_local;
180 obq_pi = *(event_q->pi_virt_addr);
181 DBG_INFO("Initial Event_q ci : %d Event_q pi : %d\n", obq_ci, obq_pi);
182
183 while(1) {
184 int event_index;
185 DBG_INFO("queue_id : %d ci : %d pi : %d\n",obq_id, obq_ci, obq_pi);
186 if (obq_pi == obq_ci)
187 break;
188
189 need_delayed_work = true;
190
191 /* Copy the response */
192 memcpy(&response, event_q->array_virt_addr + (obq_ci * event_q->elem_size),
193 sizeof(pqi_event_response_t));
194 DBG_INFO("response.header.iu_type : 0x%x \n", response.header.iu_type);
195 DBG_INFO("response.event_type : 0x%x \n", response.event_type);
196
197 event_index = pqisrc_event_type_to_event_index(response.event_type);
198
199 if (event_index >= 0) {
200 if(response.request_acknowledge) {
201 pending_event = &softs->pending_events[event_index];
202 pending_event->pending = true;
203 pending_event->event_type = response.event_type;
204 pending_event->event_id = response.event_id;
205 pending_event->additional_event_id = response.additional_event_id;
206 }
207 }
208
209 obq_ci = (obq_ci + 1) % event_q->num_elem;
210 }
211 /* Update CI */
212 event_q->ci_local = obq_ci;
213 PCI_MEM_PUT32(softs, event_q->ci_register_abs,
214 event_q->ci_register_offset, event_q->ci_local);
215
216 /*Adding events to the task queue for acknowledging*/
217 if (need_delayed_work == true) {
218 os_eventtaskqueue_enqueue(softs);
219 }
220
221 DBG_FUNC("OUT");
222 return PQI_STATUS_SUCCESS;
223
224
225 }
226
227 /*
228 * Function used to send a general management request to adapter.
229 */
230 int
pqisrc_submit_management_req(pqisrc_softstate_t * softs,pqi_event_config_request_t * request)231 pqisrc_submit_management_req(pqisrc_softstate_t *softs,
232 pqi_event_config_request_t *request)
233 {
234 int ret = PQI_STATUS_SUCCESS;
235 ib_queue_t *op_ib_q = &softs->op_raid_ib_q[0];
236 rcb_t *rcb = NULL;
237
238 DBG_FUNC(" IN\n");
239
240 /* Get the tag */
241 request->request_id = pqisrc_get_tag(&softs->taglist);
242 if (INVALID_ELEM == request->request_id) {
243 DBG_ERR("Tag not available\n");
244 ret = PQI_STATUS_FAILURE;
245 goto err_out;
246 }
247
248 rcb = &softs->rcb[request->request_id];
249 rcb->req_pending = true;
250 rcb->tag = request->request_id;
251 /* Submit command on operational raid ib queue */
252 ret = pqisrc_submit_cmnd(softs, op_ib_q, request);
253 if (ret != PQI_STATUS_SUCCESS) {
254 DBG_ERR(" Unable to submit command\n");
255 goto err_cmd;
256 }
257
258 ret = pqisrc_wait_on_condition(softs, rcb, PQISRC_CMD_TIMEOUT);
259 if (ret != PQI_STATUS_SUCCESS) {
260 DBG_ERR("Management request timed out !!\n");
261 goto err_cmd;
262 }
263
264 os_reset_rcb(rcb);
265 pqisrc_put_tag(&softs->taglist,request->request_id);
266 DBG_FUNC("OUT\n");
267 return ret;
268
269 err_cmd:
270 os_reset_rcb(rcb);
271 pqisrc_put_tag(&softs->taglist,request->request_id);
272 err_out:
273 DBG_FUNC(" failed OUT : %d\n", ret);
274 return ret;
275 }
276
277 /*
278 * Build and send the general management request.
279 */
280 static int
pqi_event_configure(pqisrc_softstate_t * softs,pqi_event_config_request_t * request,dma_mem_t * buff)281 pqi_event_configure(pqisrc_softstate_t *softs ,
282 pqi_event_config_request_t *request,
283 dma_mem_t *buff)
284 {
285 int ret = PQI_STATUS_SUCCESS;
286
287 DBG_FUNC(" IN\n");
288
289 request->header.comp_feature = 0x00;
290 request->header.iu_length = sizeof(pqi_event_config_request_t) -
291 PQI_REQUEST_HEADER_LENGTH; /* excluding IU header length */
292
293 /*Op OQ id where response to be delivered */
294 request->response_queue_id = softs->op_ob_q[0].q_id;
295 request->buffer_length = buff->size;
296 request->sg_desc.addr = buff->dma_addr;
297 request->sg_desc.length = buff->size;
298 request->sg_desc.zero = 0;
299 request->sg_desc.type = SGL_DESCRIPTOR_CODE_LAST_ALTERNATIVE_SGL_SEGMENT;
300
301 /* submit management req IU*/
302 ret = pqisrc_submit_management_req(softs,request);
303 if(ret)
304 goto err_out;
305
306
307 DBG_FUNC(" OUT\n");
308 return ret;
309
310 err_out:
311 DBG_FUNC("Failed OUT\n");
312 return ret;
313 }
314
315 /*
316 * Prepare REPORT EVENT CONFIGURATION IU to request that
317 * event configuration information be reported.
318 */
319 int
pqisrc_report_event_config(pqisrc_softstate_t * softs)320 pqisrc_report_event_config(pqisrc_softstate_t *softs)
321 {
322
323 int ret,i ;
324 pqi_event_config_request_t request;
325 pqi_event_config_t *event_config_p ;
326 dma_mem_t buf_report_event ;
327 /*bytes to be allocaed for report event config data-in buffer */
328 uint32_t alloc_size = sizeof(pqi_event_config_t) ;
329 memset(&request, 0 , sizeof(request));
330
331 DBG_FUNC(" IN\n");
332
333 memset(&buf_report_event, 0, sizeof(struct dma_mem));
334 buf_report_event.tag = "pqi_report_event_buf" ;
335 buf_report_event.size = alloc_size;
336 buf_report_event.align = PQISRC_DEFAULT_DMA_ALIGN;
337
338 /* allocate memory */
339 ret = os_dma_mem_alloc(softs, &buf_report_event);
340 if (ret) {
341 DBG_ERR("Failed to Allocate report event config buffer : %d\n", ret);
342 goto err_out;
343 }
344 DBG_INFO("buf_report_event.dma_addr = %p \n",(void*)buf_report_event.dma_addr);
345 DBG_INFO("buf_report_event.virt_addr = %p \n",(void*)buf_report_event.virt_addr);
346
347 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
348
349 /* Event configuration */
350 ret=pqi_event_configure(softs,&request,&buf_report_event);
351 if(ret)
352 goto free_mem;
353
354
355 event_config_p = (pqi_event_config_t*)buf_report_event.virt_addr;
356 softs->event_config.num_event_descriptors = MIN(event_config_p->num_event_descriptors,
357 PQI_MAX_EVENT_DESCRIPTORS) ;
358
359 for (i=0; i < softs->event_config.num_event_descriptors ;i++){
360 softs->event_config.descriptors[i].event_type =
361 event_config_p->descriptors[i].event_type;
362 }
363 /* free the allocated memory*/
364 os_dma_mem_free(softs, &buf_report_event);
365
366 DBG_FUNC(" OUT\n");
367 return ret;
368
369 free_mem:
370 os_dma_mem_free(softs, &buf_report_event);
371 err_out:
372 DBG_FUNC("Failed OUT\n");
373 return PQI_STATUS_FAILURE;
374 }
375
376 /*
377 * Prepare SET EVENT CONFIGURATION IU to request that
378 * event configuration parameters be set.
379 */
380 int
pqisrc_set_event_config(pqisrc_softstate_t * softs)381 pqisrc_set_event_config(pqisrc_softstate_t *softs)
382 {
383
384 int ret,i;
385 pqi_event_config_request_t request;
386 pqi_event_config_t *event_config_p;
387 dma_mem_t buf_set_event;
388 /*bytes to be allocaed for set event config data-out buffer */
389 uint32_t alloc_size = sizeof(pqi_event_config_t);
390 memset(&request, 0 , sizeof(request));
391
392 DBG_FUNC(" IN\n");
393
394 memset(&buf_set_event, 0, sizeof(struct dma_mem));
395 buf_set_event.tag = "pqi_set_event_buf";
396 buf_set_event.size = alloc_size;
397 buf_set_event.align = PQISRC_DEFAULT_DMA_ALIGN;
398
399 /* allocate memory */
400 ret = os_dma_mem_alloc(softs, &buf_set_event);
401 if (ret) {
402 DBG_ERR("Failed to Allocate set event config buffer : %d\n", ret);
403 goto err_out;
404 }
405
406 DBG_INFO("buf_set_event.dma_addr = %p\n",(void*)buf_set_event.dma_addr);
407 DBG_INFO("buf_set_event.virt_addr = %p\n",(void*)buf_set_event.virt_addr);
408
409 request.header.iu_type = PQI_REQUEST_IU_SET_EVENT_CONFIG;
410 request.iu_specific.global_event_oq_id = softs->event_q.q_id;
411
412 /*pointer to data-out buffer*/
413
414 event_config_p = (pqi_event_config_t *)buf_set_event.virt_addr;
415
416 event_config_p->num_event_descriptors = softs->event_config.num_event_descriptors;
417
418
419 for (i=0; i < softs->event_config.num_event_descriptors ; i++){
420 event_config_p->descriptors[i].event_type =
421 softs->event_config.descriptors[i].event_type;
422 if( pqisrc_event_type_to_event_index(event_config_p->descriptors[i].event_type) != -1)
423 event_config_p->descriptors[i].oq_id = softs->event_q.q_id;
424 else
425 event_config_p->descriptors[i].oq_id = 0; /* Not supported this event. */
426
427
428 }
429 /* Event configuration */
430 ret = pqi_event_configure(softs,&request,&buf_set_event);
431 if(ret)
432 goto free_mem;
433
434 os_dma_mem_free(softs, &buf_set_event);
435
436 DBG_FUNC(" OUT\n");
437 return ret;
438
439 free_mem:
440 os_dma_mem_free(softs, &buf_set_event);
441 err_out:
442 DBG_FUNC("Failed OUT\n");
443 return PQI_STATUS_FAILURE;
444
445 }
446