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 */ 13static 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 */ 23static 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 */ 35static 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 */ 47static 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 */ 56static enum iosm_flash_comp_type 57ipc_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 */ 77static 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 */ 135static 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 */ 147int 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 */ 161static 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 187coredump_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 */ 193static 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 >= 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 } 220region_create_fail: 221 return rc; 222} 223 224/* To Destroy devlink regions */ 225static 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 */ 239struct 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 290chnl_get_fail: 291 ipc_devlink_destroy_region(ipc_devlink); 292region_create_fail: 293 devlink_params_unregister(devlink_ctx, iosm_devlink_params, 294 ARRAY_SIZE(iosm_devlink_params)); 295param_reg_fail: 296 devlink_free(devlink_ctx); 297devlink_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 */ 305void 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