1*5113495bSYour Name /*
2*5113495bSYour Name * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
3*5113495bSYour Name *
4*5113495bSYour Name * Permission to use, copy, modify, and/or distribute this software for any
5*5113495bSYour Name * purpose with or without fee is hereby granted, provided that the above
6*5113495bSYour Name * copyright notice and this permission notice appear in all copies.
7*5113495bSYour Name *
8*5113495bSYour Name * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9*5113495bSYour Name * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10*5113495bSYour Name * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11*5113495bSYour Name * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12*5113495bSYour Name * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13*5113495bSYour Name * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14*5113495bSYour Name * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15*5113495bSYour Name */
16*5113495bSYour Name
17*5113495bSYour Name #include "qdf_ssr_driver_dump.h"
18*5113495bSYour Name #include "qdf_lock.h"
19*5113495bSYour Name #include "qdf_str.h"
20*5113495bSYour Name #include <qdf_trace.h>
21*5113495bSYour Name #include <qdf_parse.h>
22*5113495bSYour Name #include <qdf_module.h>
23*5113495bSYour Name #include <qdf_util.h>
24*5113495bSYour Name #include <qdf_mem.h>
25*5113495bSYour Name #include <qdf_types.h>
26*5113495bSYour Name
27*5113495bSYour Name static qdf_mutex_t region_list_mutex;
28*5113495bSYour Name
29*5113495bSYour Name static struct cnss_ssr_driver_dump_entry
30*5113495bSYour Name dump_entry_list[CNSS_HOST_DUMP_TYPE_MAX];
31*5113495bSYour Name
32*5113495bSYour Name static size_t num_of_regions_registered;
33*5113495bSYour Name
qdf_ssr_driver_dump_init(void)34*5113495bSYour Name QDF_STATUS qdf_ssr_driver_dump_init(void)
35*5113495bSYour Name {
36*5113495bSYour Name QDF_STATUS status;
37*5113495bSYour Name
38*5113495bSYour Name status = qdf_mutex_create(®ion_list_mutex);
39*5113495bSYour Name if (QDF_IS_STATUS_ERROR(status))
40*5113495bSYour Name return status;
41*5113495bSYour Name
42*5113495bSYour Name num_of_regions_registered = 0;
43*5113495bSYour Name qdf_mem_zero(dump_entry_list, sizeof(dump_entry_list));
44*5113495bSYour Name return status;
45*5113495bSYour Name }
46*5113495bSYour Name
qdf_ssr_driver_dump_deinit(void)47*5113495bSYour Name QDF_STATUS qdf_ssr_driver_dump_deinit(void)
48*5113495bSYour Name {
49*5113495bSYour Name QDF_STATUS status;
50*5113495bSYour Name
51*5113495bSYour Name status = qdf_mutex_destroy(®ion_list_mutex);
52*5113495bSYour Name if (QDF_IS_STATUS_ERROR(status))
53*5113495bSYour Name return status;
54*5113495bSYour Name if (num_of_regions_registered > 0)
55*5113495bSYour Name qdf_warn("deiniting with regions still registered");
56*5113495bSYour Name num_of_regions_registered = 0;
57*5113495bSYour Name return status;
58*5113495bSYour Name }
59*5113495bSYour Name
60*5113495bSYour Name static struct cnss_ssr_driver_dump_entry *
qdf_ssr_driver_dump_find_next_free_entry(void)61*5113495bSYour Name qdf_ssr_driver_dump_find_next_free_entry(void)
62*5113495bSYour Name {
63*5113495bSYour Name int i;
64*5113495bSYour Name
65*5113495bSYour Name for (i = 0; i < CNSS_HOST_DUMP_TYPE_MAX; i++) {
66*5113495bSYour Name if (!dump_entry_list[i].buffer_pointer)
67*5113495bSYour Name return &dump_entry_list[i];
68*5113495bSYour Name }
69*5113495bSYour Name return NULL;
70*5113495bSYour Name }
71*5113495bSYour Name
72*5113495bSYour Name static struct cnss_ssr_driver_dump_entry *
qdf_ssr_driver_dump_find_entry_by_name(char * region_name)73*5113495bSYour Name qdf_ssr_driver_dump_find_entry_by_name(char *region_name)
74*5113495bSYour Name {
75*5113495bSYour Name int i;
76*5113495bSYour Name
77*5113495bSYour Name for (i = 0; i < CNSS_HOST_DUMP_TYPE_MAX; i++) {
78*5113495bSYour Name if (qdf_str_eq(dump_entry_list[i].region_name, region_name) &&
79*5113495bSYour Name dump_entry_list[i].buffer_pointer) {
80*5113495bSYour Name return &dump_entry_list[i];
81*5113495bSYour Name }
82*5113495bSYour Name }
83*5113495bSYour Name
84*5113495bSYour Name return NULL;
85*5113495bSYour Name }
86*5113495bSYour Name
87*5113495bSYour Name QDF_STATUS
qdf_ssr_driver_dump_register_region(char * region_name,void * region_buffer,size_t region_size)88*5113495bSYour Name qdf_ssr_driver_dump_register_region(char *region_name, void *region_buffer,
89*5113495bSYour Name size_t region_size)
90*5113495bSYour Name {
91*5113495bSYour Name QDF_STATUS status;
92*5113495bSYour Name struct cnss_ssr_driver_dump_entry *entry;
93*5113495bSYour Name
94*5113495bSYour Name if (!region_buffer || !region_name) {
95*5113495bSYour Name qdf_err("null region pointer or region_name");
96*5113495bSYour Name return QDF_STATUS_E_NULL_VALUE;
97*5113495bSYour Name }
98*5113495bSYour Name
99*5113495bSYour Name status = qdf_mutex_acquire(®ion_list_mutex);
100*5113495bSYour Name if (QDF_IS_STATUS_ERROR(status)) {
101*5113495bSYour Name qdf_err("couldn't acquire lock");
102*5113495bSYour Name return QDF_STATUS_E_RESOURCES;
103*5113495bSYour Name }
104*5113495bSYour Name
105*5113495bSYour Name entry = qdf_ssr_driver_dump_find_entry_by_name(region_name);
106*5113495bSYour Name if (entry) {
107*5113495bSYour Name qdf_err("duplicate registration of %s", region_name);
108*5113495bSYour Name status = QDF_STATUS_E_INVAL;
109*5113495bSYour Name goto ret;
110*5113495bSYour Name }
111*5113495bSYour Name
112*5113495bSYour Name entry = qdf_ssr_driver_dump_find_next_free_entry();
113*5113495bSYour Name if (!entry) {
114*5113495bSYour Name qdf_err("too many entries: %d, cannot insert %s",
115*5113495bSYour Name num_of_regions_registered, region_name);
116*5113495bSYour Name status = QDF_STATUS_E_NOMEM;
117*5113495bSYour Name goto ret;
118*5113495bSYour Name }
119*5113495bSYour Name
120*5113495bSYour Name entry->buffer_pointer = region_buffer;
121*5113495bSYour Name entry->buffer_size = region_size;
122*5113495bSYour Name qdf_str_lcopy(entry->region_name, region_name,
123*5113495bSYour Name sizeof(entry->region_name));
124*5113495bSYour Name num_of_regions_registered++;
125*5113495bSYour Name goto ret;
126*5113495bSYour Name
127*5113495bSYour Name ret:
128*5113495bSYour Name if (QDF_IS_STATUS_ERROR(qdf_mutex_release(®ion_list_mutex))) {
129*5113495bSYour Name qdf_err("error releasing lock");
130*5113495bSYour Name return QDF_STATUS_E_RESOURCES;
131*5113495bSYour Name }
132*5113495bSYour Name return status;
133*5113495bSYour Name }
134*5113495bSYour Name
qdf_ssr_driver_dump_unregister_region(char * region_name)135*5113495bSYour Name QDF_STATUS qdf_ssr_driver_dump_unregister_region(char *region_name)
136*5113495bSYour Name {
137*5113495bSYour Name QDF_STATUS status;
138*5113495bSYour Name struct cnss_ssr_driver_dump_entry *entry;
139*5113495bSYour Name
140*5113495bSYour Name if (!region_name) {
141*5113495bSYour Name qdf_err("null region_name");
142*5113495bSYour Name return QDF_STATUS_E_NULL_VALUE;
143*5113495bSYour Name }
144*5113495bSYour Name
145*5113495bSYour Name status = qdf_mutex_acquire(®ion_list_mutex);
146*5113495bSYour Name if (QDF_IS_STATUS_ERROR(status)) {
147*5113495bSYour Name qdf_err("couldn't acquire lock");
148*5113495bSYour Name return QDF_STATUS_E_RESOURCES;
149*5113495bSYour Name }
150*5113495bSYour Name
151*5113495bSYour Name entry = qdf_ssr_driver_dump_find_entry_by_name(region_name);
152*5113495bSYour Name if (!entry) {
153*5113495bSYour Name qdf_err("couldn't find entry: %s", region_name);
154*5113495bSYour Name status = QDF_STATUS_E_INVAL;
155*5113495bSYour Name goto ret;
156*5113495bSYour Name }
157*5113495bSYour Name
158*5113495bSYour Name entry->buffer_pointer = NULL;
159*5113495bSYour Name num_of_regions_registered--;
160*5113495bSYour Name
161*5113495bSYour Name ret:
162*5113495bSYour Name if (QDF_IS_STATUS_ERROR(qdf_mutex_release(®ion_list_mutex))) {
163*5113495bSYour Name qdf_err("error releasing lock");
164*5113495bSYour Name return QDF_STATUS_E_RESOURCES;
165*5113495bSYour Name }
166*5113495bSYour Name return status;
167*5113495bSYour Name }
168*5113495bSYour Name
169*5113495bSYour Name QDF_STATUS
qdf_ssr_driver_dump_retrieve_regions(qdf_ssr_driver_dump_entry * input_array,size_t * num_entries_loaded)170*5113495bSYour Name qdf_ssr_driver_dump_retrieve_regions(qdf_ssr_driver_dump_entry
171*5113495bSYour Name *input_array,
172*5113495bSYour Name size_t *num_entries_loaded)
173*5113495bSYour Name {
174*5113495bSYour Name QDF_STATUS status;
175*5113495bSYour Name int i;
176*5113495bSYour Name size_t input_index = 0;
177*5113495bSYour Name
178*5113495bSYour Name if (!input_array || !num_entries_loaded) {
179*5113495bSYour Name qdf_err("null input_array or num_entries_loaded");
180*5113495bSYour Name return QDF_STATUS_E_NULL_VALUE;
181*5113495bSYour Name }
182*5113495bSYour Name
183*5113495bSYour Name status = qdf_mutex_acquire(®ion_list_mutex);
184*5113495bSYour Name if (QDF_IS_STATUS_ERROR(status)) {
185*5113495bSYour Name qdf_err("couldn't acquire lock");
186*5113495bSYour Name return QDF_STATUS_E_RESOURCES;
187*5113495bSYour Name }
188*5113495bSYour Name
189*5113495bSYour Name for (i = 0; i < CNSS_HOST_DUMP_TYPE_MAX; i++) {
190*5113495bSYour Name if (dump_entry_list[i].buffer_pointer) {
191*5113495bSYour Name qdf_mem_copy(&input_array[input_index],
192*5113495bSYour Name &dump_entry_list[i],
193*5113495bSYour Name sizeof(dump_entry_list[i]));
194*5113495bSYour Name input_index++;
195*5113495bSYour Name }
196*5113495bSYour Name }
197*5113495bSYour Name if (input_index != num_of_regions_registered) {
198*5113495bSYour Name qdf_err("num entries mismatch index:%d num reg registered:%d",
199*5113495bSYour Name input_index, num_of_regions_registered);
200*5113495bSYour Name status = QDF_STATUS_E_INVAL;
201*5113495bSYour Name goto ret;
202*5113495bSYour Name }
203*5113495bSYour Name *num_entries_loaded = input_index;
204*5113495bSYour Name
205*5113495bSYour Name ret:
206*5113495bSYour Name if (QDF_IS_STATUS_ERROR(qdf_mutex_release(®ion_list_mutex))) {
207*5113495bSYour Name qdf_err("error releasing lock");
208*5113495bSYour Name return QDF_STATUS_E_RESOURCES;
209*5113495bSYour Name }
210*5113495bSYour Name return status;
211*5113495bSYour Name }
212