1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2020-2021 Intel Corporation.
4 */
5 #include <linux/vmalloc.h>
6
7 #include "iosm_ipc_chnl_cfg.h"
8 #include "iosm_ipc_coredump.h"
9 #include "iosm_ipc_devlink.h"
10 #include "iosm_ipc_flash.h"
11
12 /* Coredump list */
13 static struct iosm_coredump_file_info list[IOSM_NOF_CD_REGION] = {
14 {"report.json", REPORT_JSON_SIZE,},
15 {"coredump.fcd", COREDUMP_FCD_SIZE,},
16 {"cdd.log", CDD_LOG_SIZE,},
17 {"eeprom.bin", EEPROM_BIN_SIZE,},
18 {"bootcore_trace.bin", BOOTCORE_TRC_BIN_SIZE,},
19 {"bootcore_prev_trace.bin", BOOTCORE_PREV_TRC_BIN_SIZE,},
20 };
21
22 /* Get the param values for the specific param ID's */
ipc_devlink_get_param(struct devlink * dl,u32 id,struct devlink_param_gset_ctx * ctx)23 static int ipc_devlink_get_param(struct devlink *dl, u32 id,
24 struct devlink_param_gset_ctx *ctx)
25 {
26 struct iosm_devlink *ipc_devlink = devlink_priv(dl);
27
28 if (id == IOSM_DEVLINK_PARAM_ID_ERASE_FULL_FLASH)
29 ctx->val.vu8 = ipc_devlink->param.erase_full_flash;
30
31 return 0;
32 }
33
34 /* Set the param values for the specific param ID's */
ipc_devlink_set_param(struct devlink * dl,u32 id,struct devlink_param_gset_ctx * ctx)35 static int ipc_devlink_set_param(struct devlink *dl, u32 id,
36 struct devlink_param_gset_ctx *ctx)
37 {
38 struct iosm_devlink *ipc_devlink = devlink_priv(dl);
39
40 if (id == IOSM_DEVLINK_PARAM_ID_ERASE_FULL_FLASH)
41 ipc_devlink->param.erase_full_flash = ctx->val.vu8;
42
43 return 0;
44 }
45
46 /* Devlink param structure array */
47 static const struct devlink_param iosm_devlink_params[] = {
48 DEVLINK_PARAM_DRIVER(IOSM_DEVLINK_PARAM_ID_ERASE_FULL_FLASH,
49 "erase_full_flash", DEVLINK_PARAM_TYPE_BOOL,
50 BIT(DEVLINK_PARAM_CMODE_RUNTIME),
51 ipc_devlink_get_param, ipc_devlink_set_param,
52 NULL),
53 };
54
55 /* Get devlink flash component type */
56 static enum iosm_flash_comp_type
ipc_devlink_get_flash_comp_type(const char comp_str[],u32 len)57 ipc_devlink_get_flash_comp_type(const char comp_str[], u32 len)
58 {
59 enum iosm_flash_comp_type fls_type;
60
61 if (!strncmp("PSI", comp_str, len))
62 fls_type = FLASH_COMP_TYPE_PSI;
63 else if (!strncmp("EBL", comp_str, len))
64 fls_type = FLASH_COMP_TYPE_EBL;
65 else if (!strncmp("FLS", comp_str, len))
66 fls_type = FLASH_COMP_TYPE_FLS;
67 else
68 fls_type = FLASH_COMP_TYPE_INVAL;
69
70 return fls_type;
71 }
72
73 /* Function triggered on devlink flash command
74 * Flash update function which calls multiple functions based on
75 * component type specified in the flash command
76 */
ipc_devlink_flash_update(struct devlink * devlink,struct devlink_flash_update_params * params,struct netlink_ext_ack * extack)77 static int ipc_devlink_flash_update(struct devlink *devlink,
78 struct devlink_flash_update_params *params,
79 struct netlink_ext_ack *extack)
80 {
81 struct iosm_devlink *ipc_devlink = devlink_priv(devlink);
82 enum iosm_flash_comp_type fls_type;
83 struct iosm_devlink_image *header;
84 int rc = -EINVAL;
85 u8 *mdm_rsp;
86
87 header = (struct iosm_devlink_image *)params->fw->data;
88
89 if (!header || params->fw->size <= IOSM_DEVLINK_HDR_SIZE ||
90 (memcmp(header->magic_header, IOSM_DEVLINK_MAGIC_HEADER,
91 IOSM_DEVLINK_MAGIC_HEADER_LEN) != 0))
92 return -EINVAL;
93
94 mdm_rsp = kzalloc(IOSM_EBL_DW_PACK_SIZE, GFP_KERNEL);
95 if (!mdm_rsp)
96 return -ENOMEM;
97
98 fls_type = ipc_devlink_get_flash_comp_type(header->image_type,
99 IOSM_DEVLINK_MAX_IMG_LEN);
100
101 switch (fls_type) {
102 case FLASH_COMP_TYPE_PSI:
103 rc = ipc_flash_boot_psi(ipc_devlink, params->fw);
104 break;
105 case FLASH_COMP_TYPE_EBL:
106 rc = ipc_flash_boot_ebl(ipc_devlink, params->fw);
107 if (rc)
108 break;
109 rc = ipc_flash_boot_set_capabilities(ipc_devlink, mdm_rsp);
110 if (rc)
111 break;
112 rc = ipc_flash_read_swid(ipc_devlink, mdm_rsp);
113 break;
114 case FLASH_COMP_TYPE_FLS:
115 rc = ipc_flash_send_fls(ipc_devlink, params->fw, mdm_rsp);
116 break;
117 default:
118 devlink_flash_update_status_notify(devlink, "Invalid component",
119 NULL, 0, 0);
120 break;
121 }
122
123 if (!rc)
124 devlink_flash_update_status_notify(devlink, "Flashing success",
125 header->image_type, 0, 0);
126 else
127 devlink_flash_update_status_notify(devlink, "Flashing failed",
128 header->image_type, 0, 0);
129
130 kfree(mdm_rsp);
131 return rc;
132 }
133
134 /* Call back function for devlink ops */
135 static const struct devlink_ops devlink_flash_ops = {
136 .flash_update = ipc_devlink_flash_update,
137 };
138
139 /**
140 * ipc_devlink_send_cmd - Send command to Modem
141 * @ipc_devlink: Pointer to struct iosm_devlink
142 * @cmd: Command to be sent to modem
143 * @entry: Command entry number
144 *
145 * Returns: 0 on success and failure value on error
146 */
ipc_devlink_send_cmd(struct iosm_devlink * ipc_devlink,u16 cmd,u32 entry)147 int ipc_devlink_send_cmd(struct iosm_devlink *ipc_devlink, u16 cmd, u32 entry)
148 {
149 struct iosm_rpsi_cmd rpsi_cmd;
150
151 rpsi_cmd.param.dword = cpu_to_le32(entry);
152 rpsi_cmd.cmd = cpu_to_le16(cmd);
153 rpsi_cmd.crc = rpsi_cmd.param.word[0] ^ rpsi_cmd.param.word[1] ^
154 rpsi_cmd.cmd;
155
156 return ipc_imem_sys_devlink_write(ipc_devlink, (u8 *)&rpsi_cmd,
157 sizeof(rpsi_cmd));
158 }
159
160 /* Function to create snapshot */
ipc_devlink_coredump_snapshot(struct devlink * dl,const struct devlink_region_ops * ops,struct netlink_ext_ack * extack,u8 ** data)161 static int ipc_devlink_coredump_snapshot(struct devlink *dl,
162 const struct devlink_region_ops *ops,
163 struct netlink_ext_ack *extack,
164 u8 **data)
165 {
166 struct iosm_devlink *ipc_devlink = devlink_priv(dl);
167 struct iosm_coredump_file_info *cd_list = ops->priv;
168 u32 region_size;
169 int rc;
170
171 dev_dbg(ipc_devlink->dev, "Region:%s, ID:%d", ops->name,
172 cd_list->entry);
173 region_size = cd_list->default_size;
174 rc = ipc_coredump_collect(ipc_devlink, data, cd_list->entry,
175 region_size);
176 if (rc) {
177 dev_err(ipc_devlink->dev, "Fail to create snapshot,err %d", rc);
178 goto coredump_collect_err;
179 }
180
181 /* Send coredump end cmd indicating end of coredump collection */
182 if (cd_list->entry == (IOSM_NOF_CD_REGION - 1))
183 ipc_coredump_get_list(ipc_devlink, rpsi_cmd_coredump_end);
184
185 return 0;
186
187 coredump_collect_err:
188 ipc_coredump_get_list(ipc_devlink, rpsi_cmd_coredump_end);
189 return rc;
190 }
191
192 /* To create regions for coredump files */
ipc_devlink_create_region(struct iosm_devlink * devlink)193 static int ipc_devlink_create_region(struct iosm_devlink *devlink)
194 {
195 struct devlink_region_ops *mdm_coredump;
196 int rc = 0;
197 int i;
198
199 mdm_coredump = devlink->iosm_devlink_mdm_coredump;
200 for (i = 0; i < IOSM_NOF_CD_REGION; i++) {
201 mdm_coredump[i].name = list[i].filename;
202 mdm_coredump[i].snapshot = ipc_devlink_coredump_snapshot;
203 mdm_coredump[i].destructor = vfree;
204 devlink->cd_regions[i] =
205 devlink_region_create(devlink->devlink_ctx,
206 &mdm_coredump[i], MAX_SNAPSHOTS,
207 list[i].default_size);
208
209 if (IS_ERR(devlink->cd_regions[i])) {
210 rc = PTR_ERR(devlink->cd_regions[i]);
211 dev_err(devlink->dev, "Devlink region fail,err %d", rc);
212 /* Delete previously created regions */
213 for (i--; i >= 0; i--)
214 devlink_region_destroy(devlink->cd_regions[i]);
215 goto region_create_fail;
216 }
217 list[i].entry = i;
218 mdm_coredump[i].priv = list + i;
219 }
220 region_create_fail:
221 return rc;
222 }
223
224 /* To Destroy devlink regions */
ipc_devlink_destroy_region(struct iosm_devlink * ipc_devlink)225 static void ipc_devlink_destroy_region(struct iosm_devlink *ipc_devlink)
226 {
227 u8 i;
228
229 for (i = 0; i < IOSM_NOF_CD_REGION; i++)
230 devlink_region_destroy(ipc_devlink->cd_regions[i]);
231 }
232
233 /**
234 * ipc_devlink_init - Initialize/register devlink to IOSM driver
235 * @ipc_imem: Pointer to struct iosm_imem
236 *
237 * Returns: Pointer to iosm_devlink on success and NULL on failure
238 */
ipc_devlink_init(struct iosm_imem * ipc_imem)239 struct iosm_devlink *ipc_devlink_init(struct iosm_imem *ipc_imem)
240 {
241 struct ipc_chnl_cfg chnl_cfg_flash = { 0 };
242 struct iosm_devlink *ipc_devlink;
243 struct devlink *devlink_ctx;
244 int rc;
245
246 devlink_ctx = devlink_alloc(&devlink_flash_ops,
247 sizeof(struct iosm_devlink),
248 ipc_imem->dev);
249 if (!devlink_ctx) {
250 dev_err(ipc_imem->dev, "devlink_alloc failed");
251 goto devlink_alloc_fail;
252 }
253
254 ipc_devlink = devlink_priv(devlink_ctx);
255 ipc_devlink->devlink_ctx = devlink_ctx;
256 ipc_devlink->pcie = ipc_imem->pcie;
257 ipc_devlink->dev = ipc_imem->dev;
258
259 rc = devlink_params_register(devlink_ctx, iosm_devlink_params,
260 ARRAY_SIZE(iosm_devlink_params));
261 if (rc) {
262 dev_err(ipc_devlink->dev,
263 "devlink_params_register failed. rc %d", rc);
264 goto param_reg_fail;
265 }
266
267 ipc_devlink->cd_file_info = list;
268
269 rc = ipc_devlink_create_region(ipc_devlink);
270 if (rc) {
271 dev_err(ipc_devlink->dev, "Devlink Region create failed, rc %d",
272 rc);
273 goto region_create_fail;
274 }
275
276 if (ipc_chnl_cfg_get(&chnl_cfg_flash, IPC_MEM_CTRL_CHL_ID_7) < 0)
277 goto chnl_get_fail;
278
279 ipc_imem_channel_init(ipc_imem, IPC_CTYPE_CTRL,
280 chnl_cfg_flash, IRQ_MOD_OFF);
281
282 init_completion(&ipc_devlink->devlink_sio.read_sem);
283 skb_queue_head_init(&ipc_devlink->devlink_sio.rx_list);
284
285 devlink_register(devlink_ctx);
286 dev_dbg(ipc_devlink->dev, "iosm devlink register success");
287
288 return ipc_devlink;
289
290 chnl_get_fail:
291 ipc_devlink_destroy_region(ipc_devlink);
292 region_create_fail:
293 devlink_params_unregister(devlink_ctx, iosm_devlink_params,
294 ARRAY_SIZE(iosm_devlink_params));
295 param_reg_fail:
296 devlink_free(devlink_ctx);
297 devlink_alloc_fail:
298 return NULL;
299 }
300
301 /**
302 * ipc_devlink_deinit - To unintialize the devlink from IOSM driver.
303 * @ipc_devlink: Devlink instance
304 */
ipc_devlink_deinit(struct iosm_devlink * ipc_devlink)305 void ipc_devlink_deinit(struct iosm_devlink *ipc_devlink)
306 {
307 struct devlink *devlink_ctx = ipc_devlink->devlink_ctx;
308
309 devlink_unregister(devlink_ctx);
310 ipc_devlink_destroy_region(ipc_devlink);
311 devlink_params_unregister(devlink_ctx, iosm_devlink_params,
312 ARRAY_SIZE(iosm_devlink_params));
313 if (ipc_devlink->devlink_sio.devlink_read_pend) {
314 complete(&ipc_devlink->devlink_sio.read_sem);
315 complete(&ipc_devlink->devlink_sio.channel->ul_sem);
316 }
317 if (!ipc_devlink->devlink_sio.devlink_read_pend)
318 skb_queue_purge(&ipc_devlink->devlink_sio.rx_list);
319
320 ipc_imem_sys_devlink_close(ipc_devlink);
321 devlink_free(devlink_ctx);
322 }
323