Kyle Yan | 3d6600c | 2017-01-06 14:04:26 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved. |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/err.h> |
| 15 | #include <linux/io.h> |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/of.h> |
| 19 | #include <linux/clk.h> |
| 20 | #include <linux/regulator/consumer.h> |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/of_gpio.h> |
| 23 | #include <linux/delay.h> |
| 24 | |
| 25 | #include <linux/msm-bus-board.h> |
| 26 | #include <linux/msm-bus.h> |
| 27 | #include <linux/dma-mapping.h> |
| 28 | |
| 29 | #include <soc/qcom/subsystem_restart.h> |
| 30 | #include <soc/qcom/ramdump.h> |
| 31 | #include <soc/qcom/scm.h> |
| 32 | |
| 33 | #include <soc/qcom/smem.h> |
| 34 | |
| 35 | #include "peripheral-loader.h" |
| 36 | |
| 37 | #define XO_FREQ 19200000 |
| 38 | #define PROXY_TIMEOUT_MS 10000 |
Kyle Yan | fe3813e | 2017-06-06 17:03:58 -0700 | [diff] [blame] | 39 | #define MAX_SSR_REASON_LEN 256U |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 40 | #define STOP_ACK_TIMEOUT_MS 1000 |
| 41 | #define CRASH_STOP_ACK_TO_MS 200 |
| 42 | |
| 43 | #define ERR_READY 0 |
| 44 | #define PBL_DONE 1 |
Avaneesh Kumar Dwivedi | 94619d9 | 2017-10-05 17:58:38 +0530 | [diff] [blame] | 45 | #define QDSP6SS_NMI_STATUS 0x44 |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 46 | |
| 47 | #define desc_to_data(d) container_of(d, struct pil_tz_data, desc) |
| 48 | #define subsys_to_data(d) container_of(d, struct pil_tz_data, subsys_desc) |
| 49 | |
| 50 | /** |
| 51 | * struct reg_info - regulator info |
| 52 | * @reg: regulator handle |
| 53 | * @uV: voltage in uV |
| 54 | * @uA: current in uA |
| 55 | */ |
| 56 | struct reg_info { |
| 57 | struct regulator *reg; |
| 58 | int uV; |
| 59 | int uA; |
| 60 | }; |
| 61 | |
| 62 | /** |
| 63 | * struct pil_tz_data |
| 64 | * @regs: regulators that should be always on when the subsystem is |
| 65 | * brought out of reset |
| 66 | * @proxy_regs: regulators that should be on during pil proxy voting |
| 67 | * @clks: clocks that should be always on when the subsystem is |
| 68 | * brought out of reset |
| 69 | * @proxy_clks: clocks that should be on during pil proxy voting |
| 70 | * @reg_count: the number of always on regulators |
| 71 | * @proxy_reg_count: the number of proxy voting regulators |
| 72 | * @clk_count: the number of always on clocks |
| 73 | * @proxy_clk_count: the number of proxy voting clocks |
| 74 | * @smem_id: the smem id used for read the subsystem crash reason |
| 75 | * @ramdump_dev: ramdump device pointer |
| 76 | * @pas_id: the PAS id for tz |
| 77 | * @bus_client: bus client id |
| 78 | * @enable_bus_scaling: set to true if PIL needs to vote for |
| 79 | * bus bandwidth |
| 80 | * @keep_proxy_regs_on: If set, during proxy unvoting, PIL removes the |
| 81 | * voltage/current vote for proxy regulators but leaves |
| 82 | * them enabled. |
| 83 | * @stop_ack: state of completion of stop ack |
| 84 | * @desc: PIL descriptor |
| 85 | * @subsys: subsystem device pointer |
| 86 | * @subsys_desc: subsystem descriptor |
| 87 | * @u32 bits_arr[2]: array of bit positions in SCSR registers |
| 88 | */ |
| 89 | struct pil_tz_data { |
| 90 | struct reg_info *regs; |
| 91 | struct reg_info *proxy_regs; |
| 92 | struct clk **clks; |
| 93 | struct clk **proxy_clks; |
| 94 | int reg_count; |
| 95 | int proxy_reg_count; |
| 96 | int clk_count; |
| 97 | int proxy_clk_count; |
| 98 | int smem_id; |
| 99 | void *ramdump_dev; |
| 100 | u32 pas_id; |
| 101 | u32 bus_client; |
| 102 | bool enable_bus_scaling; |
| 103 | bool keep_proxy_regs_on; |
| 104 | struct completion stop_ack; |
| 105 | struct pil_desc desc; |
| 106 | struct subsys_device *subsys; |
| 107 | struct subsys_desc subsys_desc; |
| 108 | void __iomem *irq_status; |
| 109 | void __iomem *irq_clear; |
| 110 | void __iomem *irq_mask; |
| 111 | void __iomem *err_status; |
| 112 | void __iomem *err_status_spare; |
Avaneesh Kumar Dwivedi | 94619d9 | 2017-10-05 17:58:38 +0530 | [diff] [blame] | 113 | void __iomem *reg_base; |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 114 | u32 bits_arr[2]; |
| 115 | }; |
| 116 | |
| 117 | enum scm_cmd { |
| 118 | PAS_INIT_IMAGE_CMD = 1, |
| 119 | PAS_MEM_SETUP_CMD, |
| 120 | PAS_AUTH_AND_RESET_CMD = 5, |
| 121 | PAS_SHUTDOWN_CMD, |
| 122 | }; |
| 123 | |
| 124 | enum pas_id { |
| 125 | PAS_MODEM, |
| 126 | PAS_Q6, |
| 127 | PAS_DSPS, |
| 128 | PAS_TZAPPS, |
| 129 | PAS_MODEM_SW, |
| 130 | PAS_MODEM_FW, |
| 131 | PAS_WCNSS, |
| 132 | PAS_SECAPP, |
| 133 | PAS_GSS, |
| 134 | PAS_VIDC, |
| 135 | PAS_VPU, |
| 136 | PAS_BCSS, |
| 137 | }; |
| 138 | |
| 139 | static struct msm_bus_paths scm_pas_bw_tbl[] = { |
| 140 | { |
| 141 | .vectors = (struct msm_bus_vectors[]){ |
| 142 | { |
| 143 | .src = MSM_BUS_MASTER_SPS, |
| 144 | .dst = MSM_BUS_SLAVE_EBI_CH0, |
| 145 | }, |
| 146 | }, |
| 147 | .num_paths = 1, |
| 148 | }, |
| 149 | { |
| 150 | .vectors = (struct msm_bus_vectors[]){ |
| 151 | { |
| 152 | .src = MSM_BUS_MASTER_SPS, |
| 153 | .dst = MSM_BUS_SLAVE_EBI_CH0, |
| 154 | .ib = 492 * 8 * 1000000UL, |
| 155 | .ab = 492 * 8 * 100000UL, |
| 156 | }, |
| 157 | }, |
| 158 | .num_paths = 1, |
| 159 | }, |
| 160 | }; |
| 161 | |
| 162 | static struct msm_bus_scale_pdata scm_pas_bus_pdata = { |
| 163 | .usecase = scm_pas_bw_tbl, |
| 164 | .num_usecases = ARRAY_SIZE(scm_pas_bw_tbl), |
| 165 | .name = "scm_pas", |
| 166 | }; |
| 167 | |
| 168 | static uint32_t scm_perf_client; |
| 169 | static int scm_pas_bw_count; |
| 170 | static DEFINE_MUTEX(scm_pas_bw_mutex); |
| 171 | |
| 172 | static int scm_pas_enable_bw(void) |
| 173 | { |
| 174 | int ret = 0; |
| 175 | |
| 176 | if (!scm_perf_client) |
| 177 | return -EINVAL; |
| 178 | |
| 179 | mutex_lock(&scm_pas_bw_mutex); |
| 180 | if (!scm_pas_bw_count) { |
| 181 | ret = msm_bus_scale_client_update_request(scm_perf_client, 1); |
| 182 | if (ret) |
| 183 | goto err_bus; |
| 184 | scm_pas_bw_count++; |
| 185 | } |
| 186 | |
| 187 | mutex_unlock(&scm_pas_bw_mutex); |
| 188 | return ret; |
| 189 | |
| 190 | err_bus: |
| 191 | pr_err("scm-pas; Bandwidth request failed (%d)\n", ret); |
| 192 | msm_bus_scale_client_update_request(scm_perf_client, 0); |
| 193 | |
| 194 | mutex_unlock(&scm_pas_bw_mutex); |
| 195 | return ret; |
| 196 | } |
| 197 | |
| 198 | static void scm_pas_disable_bw(void) |
| 199 | { |
| 200 | mutex_lock(&scm_pas_bw_mutex); |
| 201 | if (scm_pas_bw_count-- == 1) |
| 202 | msm_bus_scale_client_update_request(scm_perf_client, 0); |
| 203 | mutex_unlock(&scm_pas_bw_mutex); |
| 204 | } |
| 205 | |
| 206 | static void scm_pas_init(int id) |
| 207 | { |
| 208 | static int is_inited; |
| 209 | |
| 210 | if (is_inited) |
| 211 | return; |
| 212 | |
| 213 | scm_pas_bw_tbl[0].vectors[0].src = id; |
| 214 | scm_pas_bw_tbl[1].vectors[0].src = id; |
| 215 | |
| 216 | scm_perf_client = msm_bus_scale_register_client(&scm_pas_bus_pdata); |
| 217 | if (!scm_perf_client) |
| 218 | pr_warn("scm-pas: Unable to register bus client\n"); |
| 219 | |
| 220 | is_inited = 1; |
| 221 | } |
| 222 | |
| 223 | static int of_read_clocks(struct device *dev, struct clk ***clks_ref, |
| 224 | const char *propname) |
| 225 | { |
| 226 | long clk_count; |
| 227 | int i, len; |
| 228 | struct clk **clks; |
| 229 | |
| 230 | if (!of_find_property(dev->of_node, propname, &len)) |
| 231 | return 0; |
| 232 | |
| 233 | clk_count = of_property_count_strings(dev->of_node, propname); |
| 234 | if (IS_ERR_VALUE(clk_count)) { |
| 235 | dev_err(dev, "Failed to get clock names\n"); |
| 236 | return -EINVAL; |
| 237 | } |
| 238 | |
| 239 | clks = devm_kzalloc(dev, sizeof(struct clk *) * clk_count, |
| 240 | GFP_KERNEL); |
| 241 | if (!clks) |
| 242 | return -ENOMEM; |
| 243 | |
| 244 | for (i = 0; i < clk_count; i++) { |
| 245 | const char *clock_name; |
| 246 | char clock_freq_name[50]; |
| 247 | u32 clock_rate = XO_FREQ; |
| 248 | |
| 249 | of_property_read_string_index(dev->of_node, |
| 250 | propname, i, |
| 251 | &clock_name); |
| 252 | snprintf(clock_freq_name, ARRAY_SIZE(clock_freq_name), |
| 253 | "qcom,%s-freq", clock_name); |
| 254 | if (of_find_property(dev->of_node, clock_freq_name, &len)) |
| 255 | if (of_property_read_u32(dev->of_node, clock_freq_name, |
| 256 | &clock_rate)) { |
| 257 | dev_err(dev, "Failed to read %s clock's freq\n", |
| 258 | clock_freq_name); |
| 259 | return -EINVAL; |
| 260 | } |
| 261 | |
| 262 | clks[i] = devm_clk_get(dev, clock_name); |
| 263 | if (IS_ERR(clks[i])) { |
| 264 | int rc = PTR_ERR(clks[i]); |
| 265 | |
| 266 | if (rc != -EPROBE_DEFER) |
| 267 | dev_err(dev, "Failed to get %s clock\n", |
| 268 | clock_name); |
| 269 | return rc; |
| 270 | } |
| 271 | |
| 272 | /* Make sure rate-settable clocks' rates are set */ |
| 273 | if (clk_get_rate(clks[i]) == 0) |
| 274 | clk_set_rate(clks[i], clk_round_rate(clks[i], |
| 275 | clock_rate)); |
| 276 | } |
| 277 | |
| 278 | *clks_ref = clks; |
| 279 | return clk_count; |
| 280 | } |
| 281 | |
| 282 | static int of_read_regs(struct device *dev, struct reg_info **regs_ref, |
| 283 | const char *propname) |
| 284 | { |
| 285 | long reg_count; |
| 286 | int i, len, rc; |
| 287 | struct reg_info *regs; |
| 288 | |
| 289 | if (!of_find_property(dev->of_node, propname, &len)) |
| 290 | return 0; |
| 291 | |
| 292 | reg_count = of_property_count_strings(dev->of_node, propname); |
| 293 | if (IS_ERR_VALUE(reg_count)) { |
| 294 | dev_err(dev, "Failed to get regulator names\n"); |
| 295 | return -EINVAL; |
| 296 | } |
| 297 | |
| 298 | regs = devm_kzalloc(dev, sizeof(struct reg_info) * reg_count, |
| 299 | GFP_KERNEL); |
| 300 | if (!regs) |
| 301 | return -ENOMEM; |
| 302 | |
| 303 | for (i = 0; i < reg_count; i++) { |
| 304 | const char *reg_name; |
| 305 | char reg_uV_uA_name[50]; |
| 306 | u32 vdd_uV_uA[2]; |
| 307 | |
| 308 | of_property_read_string_index(dev->of_node, |
| 309 | propname, i, |
| 310 | ®_name); |
| 311 | |
| 312 | regs[i].reg = devm_regulator_get(dev, reg_name); |
| 313 | if (IS_ERR(regs[i].reg)) { |
| 314 | int rc = PTR_ERR(regs[i].reg); |
| 315 | |
| 316 | if (rc != -EPROBE_DEFER) |
| 317 | dev_err(dev, "Failed to get %s\n regulator", |
| 318 | reg_name); |
| 319 | return rc; |
| 320 | } |
| 321 | |
| 322 | /* |
| 323 | * Read the voltage and current values for the corresponding |
| 324 | * regulator. The device tree property name is "qcom," + |
| 325 | * "regulator_name" + "-uV-uA". |
| 326 | */ |
| 327 | rc = snprintf(reg_uV_uA_name, ARRAY_SIZE(reg_uV_uA_name), |
| 328 | "qcom,%s-uV-uA", reg_name); |
| 329 | if (rc < strlen(reg_name) + 6) { |
| 330 | dev_err(dev, "Failed to hold reg_uV_uA_name\n"); |
| 331 | return -EINVAL; |
| 332 | } |
| 333 | |
| 334 | if (!of_find_property(dev->of_node, reg_uV_uA_name, &len)) |
| 335 | continue; |
| 336 | |
| 337 | len /= sizeof(vdd_uV_uA[0]); |
| 338 | |
| 339 | /* There should be two entries: one for uV and one for uA */ |
| 340 | if (len != 2) { |
| 341 | dev_err(dev, "Missing uV/uA value\n"); |
| 342 | return -EINVAL; |
| 343 | } |
| 344 | |
| 345 | rc = of_property_read_u32_array(dev->of_node, reg_uV_uA_name, |
| 346 | vdd_uV_uA, len); |
| 347 | if (rc) { |
| 348 | dev_err(dev, "Failed to read uV/uA values(rc:%d)\n", |
| 349 | rc); |
| 350 | return rc; |
| 351 | } |
| 352 | |
| 353 | regs[i].uV = vdd_uV_uA[0]; |
| 354 | regs[i].uA = vdd_uV_uA[1]; |
| 355 | } |
| 356 | |
| 357 | *regs_ref = regs; |
| 358 | return reg_count; |
| 359 | } |
| 360 | |
| 361 | static int of_read_bus_pdata(struct platform_device *pdev, |
| 362 | struct pil_tz_data *d) |
| 363 | { |
| 364 | struct msm_bus_scale_pdata *pdata; |
| 365 | |
| 366 | pdata = msm_bus_cl_get_pdata(pdev); |
| 367 | |
| 368 | if (!pdata) |
| 369 | return -EINVAL; |
| 370 | |
| 371 | d->bus_client = msm_bus_scale_register_client(pdata); |
| 372 | if (!d->bus_client) |
| 373 | pr_warn("%s: Unable to register bus client\n", __func__); |
| 374 | |
| 375 | return 0; |
| 376 | } |
| 377 | |
| 378 | static int piltz_resc_init(struct platform_device *pdev, struct pil_tz_data *d) |
| 379 | { |
| 380 | int len, count, rc; |
| 381 | struct device *dev = &pdev->dev; |
| 382 | |
| 383 | count = of_read_clocks(dev, &d->clks, "qcom,active-clock-names"); |
| 384 | if (count < 0) { |
| 385 | dev_err(dev, "Failed to setup clocks.\n"); |
| 386 | return count; |
| 387 | } |
| 388 | d->clk_count = count; |
| 389 | |
| 390 | count = of_read_clocks(dev, &d->proxy_clks, "qcom,proxy-clock-names"); |
| 391 | if (count < 0) { |
| 392 | dev_err(dev, "Failed to setup proxy clocks.\n"); |
| 393 | return count; |
| 394 | } |
| 395 | d->proxy_clk_count = count; |
| 396 | |
| 397 | count = of_read_regs(dev, &d->regs, "qcom,active-reg-names"); |
| 398 | if (count < 0) { |
| 399 | dev_err(dev, "Failed to setup regulators.\n"); |
| 400 | return count; |
| 401 | } |
| 402 | d->reg_count = count; |
| 403 | |
| 404 | count = of_read_regs(dev, &d->proxy_regs, "qcom,proxy-reg-names"); |
| 405 | if (count < 0) { |
| 406 | dev_err(dev, "Failed to setup proxy regulators.\n"); |
| 407 | return count; |
| 408 | } |
| 409 | d->proxy_reg_count = count; |
| 410 | |
| 411 | if (of_find_property(dev->of_node, "qcom,msm-bus,name", &len)) { |
| 412 | d->enable_bus_scaling = true; |
| 413 | rc = of_read_bus_pdata(pdev, d); |
| 414 | if (rc) { |
| 415 | dev_err(dev, "Failed to setup bus scaling client.\n"); |
| 416 | return rc; |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | static int enable_regulators(struct pil_tz_data *d, struct device *dev, |
| 424 | struct reg_info *regs, int reg_count, |
| 425 | bool reg_no_enable) |
| 426 | { |
| 427 | int i, rc = 0; |
| 428 | |
| 429 | for (i = 0; i < reg_count; i++) { |
| 430 | if (regs[i].uV > 0) { |
| 431 | rc = regulator_set_voltage(regs[i].reg, |
| 432 | regs[i].uV, INT_MAX); |
| 433 | if (rc) { |
| 434 | dev_err(dev, "Failed to request voltage(rc:%d)\n", |
| 435 | rc); |
| 436 | goto err_voltage; |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | if (regs[i].uA > 0) { |
| 441 | rc = regulator_set_load(regs[i].reg, |
| 442 | regs[i].uA); |
| 443 | if (rc < 0) { |
| 444 | dev_err(dev, "Failed to set regulator mode(rc:%d)\n", |
| 445 | rc); |
| 446 | goto err_mode; |
| 447 | } |
| 448 | } |
| 449 | |
| 450 | if (d->keep_proxy_regs_on && reg_no_enable) |
| 451 | continue; |
| 452 | |
| 453 | rc = regulator_enable(regs[i].reg); |
| 454 | if (rc) { |
| 455 | dev_err(dev, "Regulator enable failed(rc:%d)\n", rc); |
| 456 | goto err_enable; |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | return 0; |
| 461 | err_enable: |
| 462 | if (regs[i].uA > 0) { |
| 463 | regulator_set_voltage(regs[i].reg, 0, INT_MAX); |
| 464 | regulator_set_load(regs[i].reg, 0); |
| 465 | } |
| 466 | err_mode: |
| 467 | if (regs[i].uV > 0) |
| 468 | regulator_set_voltage(regs[i].reg, 0, INT_MAX); |
| 469 | err_voltage: |
| 470 | for (i--; i >= 0; i--) { |
| 471 | if (regs[i].uV > 0) |
| 472 | regulator_set_voltage(regs[i].reg, 0, INT_MAX); |
| 473 | |
| 474 | if (regs[i].uA > 0) |
| 475 | regulator_set_load(regs[i].reg, 0); |
| 476 | |
| 477 | if (d->keep_proxy_regs_on && reg_no_enable) |
| 478 | continue; |
| 479 | regulator_disable(regs[i].reg); |
| 480 | } |
| 481 | |
| 482 | return rc; |
| 483 | } |
| 484 | |
| 485 | static void disable_regulators(struct pil_tz_data *d, struct reg_info *regs, |
| 486 | int reg_count, bool reg_no_disable) |
| 487 | { |
| 488 | int i; |
| 489 | |
| 490 | for (i = 0; i < reg_count; i++) { |
| 491 | if (regs[i].uV > 0) |
| 492 | regulator_set_voltage(regs[i].reg, 0, INT_MAX); |
| 493 | |
| 494 | if (regs[i].uA > 0) |
| 495 | regulator_set_load(regs[i].reg, 0); |
| 496 | |
| 497 | if (d->keep_proxy_regs_on && reg_no_disable) |
| 498 | continue; |
| 499 | regulator_disable(regs[i].reg); |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | static int prepare_enable_clocks(struct device *dev, struct clk **clks, |
| 504 | int clk_count) |
| 505 | { |
| 506 | int rc = 0; |
| 507 | int i; |
| 508 | |
| 509 | for (i = 0; i < clk_count; i++) { |
| 510 | rc = clk_prepare_enable(clks[i]); |
| 511 | if (rc) { |
| 512 | dev_err(dev, "Clock enable failed(rc:%d)\n", rc); |
| 513 | goto err; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | return 0; |
| 518 | err: |
| 519 | for (i--; i >= 0; i--) |
| 520 | clk_disable_unprepare(clks[i]); |
| 521 | |
| 522 | return rc; |
| 523 | } |
| 524 | |
| 525 | static void disable_unprepare_clocks(struct clk **clks, int clk_count) |
| 526 | { |
| 527 | int i; |
| 528 | |
| 529 | for (i = --clk_count; i >= 0; i--) |
| 530 | clk_disable_unprepare(clks[i]); |
| 531 | } |
| 532 | |
| 533 | static int pil_make_proxy_vote(struct pil_desc *pil) |
| 534 | { |
| 535 | struct pil_tz_data *d = desc_to_data(pil); |
| 536 | int rc; |
| 537 | |
| 538 | if (d->subsys_desc.no_auth) |
| 539 | return 0; |
| 540 | |
Kyle Yan | f995ef6 | 2017-04-13 19:13:39 -0700 | [diff] [blame] | 541 | if (d->bus_client) { |
| 542 | rc = msm_bus_scale_client_update_request(d->bus_client, 1); |
| 543 | if (rc) { |
| 544 | dev_err(pil->dev, "bandwidth request failed(rc:%d)\n", |
| 545 | rc); |
| 546 | return rc; |
| 547 | } |
| 548 | } else |
| 549 | WARN(d->enable_bus_scaling, "Bus scaling not set up for %s!\n", |
| 550 | d->subsys_desc.name); |
| 551 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 552 | rc = enable_regulators(d, pil->dev, d->proxy_regs, |
| 553 | d->proxy_reg_count, false); |
| 554 | if (rc) |
| 555 | return rc; |
| 556 | |
| 557 | rc = prepare_enable_clocks(pil->dev, d->proxy_clks, |
| 558 | d->proxy_clk_count); |
| 559 | if (rc) |
| 560 | goto err_clks; |
| 561 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 562 | return 0; |
Kyle Yan | f995ef6 | 2017-04-13 19:13:39 -0700 | [diff] [blame] | 563 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 564 | err_clks: |
| 565 | disable_regulators(d, d->proxy_regs, d->proxy_reg_count, false); |
| 566 | |
| 567 | return rc; |
| 568 | } |
| 569 | |
| 570 | static void pil_remove_proxy_vote(struct pil_desc *pil) |
| 571 | { |
| 572 | struct pil_tz_data *d = desc_to_data(pil); |
| 573 | |
| 574 | if (d->subsys_desc.no_auth) |
| 575 | return; |
| 576 | |
Kyle Yan | f995ef6 | 2017-04-13 19:13:39 -0700 | [diff] [blame] | 577 | disable_unprepare_clocks(d->proxy_clks, d->proxy_clk_count); |
| 578 | |
| 579 | disable_regulators(d, d->proxy_regs, d->proxy_reg_count, true); |
| 580 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 581 | if (d->bus_client) |
| 582 | msm_bus_scale_client_update_request(d->bus_client, 0); |
| 583 | else |
| 584 | WARN(d->enable_bus_scaling, "Bus scaling not set up for %s!\n", |
| 585 | d->subsys_desc.name); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 586 | } |
| 587 | |
| 588 | static int pil_init_image_trusted(struct pil_desc *pil, |
| 589 | const u8 *metadata, size_t size) |
| 590 | { |
| 591 | struct pil_tz_data *d = desc_to_data(pil); |
| 592 | struct pas_init_image_req { |
| 593 | u32 proc; |
| 594 | u32 image_addr; |
| 595 | } request; |
| 596 | u32 scm_ret = 0; |
| 597 | void *mdata_buf; |
| 598 | dma_addr_t mdata_phys; |
| 599 | int ret; |
| 600 | unsigned long attrs = 0; |
| 601 | struct device dev = {0}; |
| 602 | struct scm_desc desc = {0}; |
| 603 | |
| 604 | if (d->subsys_desc.no_auth) |
| 605 | return 0; |
| 606 | |
| 607 | ret = scm_pas_enable_bw(); |
| 608 | if (ret) |
| 609 | return ret; |
| 610 | arch_setup_dma_ops(&dev, 0, 0, NULL, 0); |
| 611 | |
| 612 | dev.coherent_dma_mask = |
| 613 | DMA_BIT_MASK(sizeof(dma_addr_t) * 8); |
| 614 | attrs |= DMA_ATTR_STRONGLY_ORDERED; |
| 615 | mdata_buf = dma_alloc_attrs(&dev, size, &mdata_phys, GFP_KERNEL, |
| 616 | attrs); |
| 617 | if (!mdata_buf) { |
| 618 | pr_err("scm-pas: Allocation for metadata failed.\n"); |
| 619 | scm_pas_disable_bw(); |
| 620 | return -ENOMEM; |
| 621 | } |
| 622 | |
| 623 | memcpy(mdata_buf, metadata, size); |
| 624 | |
| 625 | request.proc = d->pas_id; |
| 626 | request.image_addr = mdata_phys; |
| 627 | |
| 628 | if (!is_scm_armv8()) { |
| 629 | ret = scm_call(SCM_SVC_PIL, PAS_INIT_IMAGE_CMD, &request, |
| 630 | sizeof(request), &scm_ret, sizeof(scm_ret)); |
| 631 | } else { |
| 632 | desc.args[0] = d->pas_id; |
| 633 | desc.args[1] = mdata_phys; |
| 634 | desc.arginfo = SCM_ARGS(2, SCM_VAL, SCM_RW); |
| 635 | ret = scm_call2(SCM_SIP_FNID(SCM_SVC_PIL, PAS_INIT_IMAGE_CMD), |
| 636 | &desc); |
| 637 | scm_ret = desc.ret[0]; |
| 638 | } |
| 639 | |
| 640 | dma_free_attrs(&dev, size, mdata_buf, mdata_phys, attrs); |
| 641 | scm_pas_disable_bw(); |
| 642 | if (ret) |
| 643 | return ret; |
| 644 | return scm_ret; |
| 645 | } |
| 646 | |
| 647 | static int pil_mem_setup_trusted(struct pil_desc *pil, phys_addr_t addr, |
| 648 | size_t size) |
| 649 | { |
| 650 | struct pil_tz_data *d = desc_to_data(pil); |
| 651 | struct pas_init_image_req { |
| 652 | u32 proc; |
| 653 | u32 start_addr; |
| 654 | u32 len; |
| 655 | } request; |
| 656 | u32 scm_ret = 0; |
| 657 | int ret; |
| 658 | struct scm_desc desc = {0}; |
| 659 | |
| 660 | if (d->subsys_desc.no_auth) |
| 661 | return 0; |
| 662 | |
| 663 | request.proc = d->pas_id; |
| 664 | request.start_addr = addr; |
| 665 | request.len = size; |
| 666 | |
| 667 | if (!is_scm_armv8()) { |
| 668 | ret = scm_call(SCM_SVC_PIL, PAS_MEM_SETUP_CMD, &request, |
| 669 | sizeof(request), &scm_ret, sizeof(scm_ret)); |
| 670 | } else { |
| 671 | desc.args[0] = d->pas_id; |
| 672 | desc.args[1] = addr; |
| 673 | desc.args[2] = size; |
| 674 | desc.arginfo = SCM_ARGS(3); |
| 675 | ret = scm_call2(SCM_SIP_FNID(SCM_SVC_PIL, PAS_MEM_SETUP_CMD), |
| 676 | &desc); |
| 677 | scm_ret = desc.ret[0]; |
| 678 | } |
| 679 | if (ret) |
| 680 | return ret; |
| 681 | return scm_ret; |
| 682 | } |
| 683 | |
| 684 | static int pil_auth_and_reset(struct pil_desc *pil) |
| 685 | { |
| 686 | struct pil_tz_data *d = desc_to_data(pil); |
| 687 | int rc; |
| 688 | u32 proc, scm_ret = 0; |
| 689 | struct scm_desc desc = {0}; |
| 690 | |
| 691 | if (d->subsys_desc.no_auth) |
| 692 | return 0; |
| 693 | |
| 694 | desc.args[0] = proc = d->pas_id; |
| 695 | desc.arginfo = SCM_ARGS(1); |
| 696 | |
Kyle Yan | f995ef6 | 2017-04-13 19:13:39 -0700 | [diff] [blame] | 697 | rc = scm_pas_enable_bw(); |
| 698 | if (rc) |
| 699 | return rc; |
| 700 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 701 | rc = enable_regulators(d, pil->dev, d->regs, d->reg_count, false); |
| 702 | if (rc) |
| 703 | return rc; |
| 704 | |
| 705 | rc = prepare_enable_clocks(pil->dev, d->clks, d->clk_count); |
| 706 | if (rc) |
| 707 | goto err_clks; |
| 708 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 709 | if (!is_scm_armv8()) { |
| 710 | rc = scm_call(SCM_SVC_PIL, PAS_AUTH_AND_RESET_CMD, &proc, |
| 711 | sizeof(proc), &scm_ret, sizeof(scm_ret)); |
| 712 | } else { |
| 713 | rc = scm_call2(SCM_SIP_FNID(SCM_SVC_PIL, |
| 714 | PAS_AUTH_AND_RESET_CMD), &desc); |
| 715 | scm_ret = desc.ret[0]; |
| 716 | } |
| 717 | scm_pas_disable_bw(); |
| 718 | if (rc) |
| 719 | goto err_reset; |
| 720 | |
| 721 | return scm_ret; |
| 722 | err_reset: |
| 723 | disable_unprepare_clocks(d->clks, d->clk_count); |
| 724 | err_clks: |
| 725 | disable_regulators(d, d->regs, d->reg_count, false); |
| 726 | |
| 727 | return rc; |
| 728 | } |
| 729 | |
| 730 | static int pil_shutdown_trusted(struct pil_desc *pil) |
| 731 | { |
| 732 | struct pil_tz_data *d = desc_to_data(pil); |
| 733 | u32 proc, scm_ret = 0; |
| 734 | int rc; |
| 735 | struct scm_desc desc = {0}; |
| 736 | |
| 737 | if (d->subsys_desc.no_auth) |
| 738 | return 0; |
| 739 | |
| 740 | desc.args[0] = proc = d->pas_id; |
| 741 | desc.arginfo = SCM_ARGS(1); |
| 742 | |
Kyle Yan | 5cb0e08 | 2017-04-21 18:13:25 -0700 | [diff] [blame] | 743 | if (d->bus_client) { |
| 744 | rc = msm_bus_scale_client_update_request(d->bus_client, 1); |
| 745 | if (rc) { |
| 746 | dev_err(pil->dev, "bandwidth request failed(rc:%d)\n", |
| 747 | rc); |
| 748 | return rc; |
| 749 | } |
| 750 | } else |
| 751 | WARN(d->enable_bus_scaling, "Bus scaling not set up for %s!\n", |
| 752 | d->subsys_desc.name); |
| 753 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 754 | rc = enable_regulators(d, pil->dev, d->proxy_regs, |
| 755 | d->proxy_reg_count, true); |
| 756 | if (rc) |
Kyle Yan | 5cb0e08 | 2017-04-21 18:13:25 -0700 | [diff] [blame] | 757 | goto err_regulators; |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 758 | |
| 759 | rc = prepare_enable_clocks(pil->dev, d->proxy_clks, |
| 760 | d->proxy_clk_count); |
| 761 | if (rc) |
| 762 | goto err_clks; |
| 763 | |
| 764 | if (!is_scm_armv8()) { |
| 765 | rc = scm_call(SCM_SVC_PIL, PAS_SHUTDOWN_CMD, &proc, |
| 766 | sizeof(proc), &scm_ret, sizeof(scm_ret)); |
| 767 | } else { |
| 768 | rc = scm_call2(SCM_SIP_FNID(SCM_SVC_PIL, PAS_SHUTDOWN_CMD), |
| 769 | &desc); |
| 770 | scm_ret = desc.ret[0]; |
| 771 | } |
| 772 | |
| 773 | disable_unprepare_clocks(d->proxy_clks, d->proxy_clk_count); |
| 774 | disable_regulators(d, d->proxy_regs, d->proxy_reg_count, false); |
Kyle Yan | 5cb0e08 | 2017-04-21 18:13:25 -0700 | [diff] [blame] | 775 | if (d->bus_client) |
| 776 | msm_bus_scale_client_update_request(d->bus_client, 0); |
| 777 | else |
| 778 | WARN(d->enable_bus_scaling, "Bus scaling not set up for %s!\n", |
| 779 | d->subsys_desc.name); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 780 | |
| 781 | if (rc) |
| 782 | return rc; |
| 783 | |
| 784 | disable_unprepare_clocks(d->clks, d->clk_count); |
| 785 | disable_regulators(d, d->regs, d->reg_count, false); |
| 786 | |
| 787 | return scm_ret; |
Kyle Yan | 5cb0e08 | 2017-04-21 18:13:25 -0700 | [diff] [blame] | 788 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 789 | err_clks: |
| 790 | disable_regulators(d, d->proxy_regs, d->proxy_reg_count, false); |
Kyle Yan | 5cb0e08 | 2017-04-21 18:13:25 -0700 | [diff] [blame] | 791 | err_regulators: |
| 792 | if (d->bus_client) |
| 793 | msm_bus_scale_client_update_request(d->bus_client, 0); |
| 794 | else |
| 795 | WARN(d->enable_bus_scaling, "Bus scaling not set up for %s!\n", |
| 796 | d->subsys_desc.name); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 797 | return rc; |
| 798 | } |
| 799 | |
Kyle Yan | 5ea3895 | 2017-08-03 16:05:55 -0700 | [diff] [blame] | 800 | static int pil_deinit_image_trusted(struct pil_desc *pil) |
| 801 | { |
| 802 | struct pil_tz_data *d = desc_to_data(pil); |
| 803 | u32 proc, scm_ret = 0; |
| 804 | int rc; |
| 805 | struct scm_desc desc = {0}; |
| 806 | |
| 807 | if (d->subsys_desc.no_auth) |
| 808 | return 0; |
| 809 | |
| 810 | desc.args[0] = proc = d->pas_id; |
| 811 | desc.arginfo = SCM_ARGS(1); |
| 812 | |
| 813 | if (!is_scm_armv8()) { |
| 814 | rc = scm_call(SCM_SVC_PIL, PAS_SHUTDOWN_CMD, &proc, |
| 815 | sizeof(proc), &scm_ret, sizeof(scm_ret)); |
| 816 | } else { |
| 817 | rc = scm_call2(SCM_SIP_FNID(SCM_SVC_PIL, PAS_SHUTDOWN_CMD), |
| 818 | &desc); |
| 819 | scm_ret = desc.ret[0]; |
| 820 | } |
| 821 | |
| 822 | if (rc) |
| 823 | return rc; |
| 824 | return scm_ret; |
| 825 | } |
| 826 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 827 | static struct pil_reset_ops pil_ops_trusted = { |
| 828 | .init_image = pil_init_image_trusted, |
| 829 | .mem_setup = pil_mem_setup_trusted, |
| 830 | .auth_and_reset = pil_auth_and_reset, |
| 831 | .shutdown = pil_shutdown_trusted, |
| 832 | .proxy_vote = pil_make_proxy_vote, |
| 833 | .proxy_unvote = pil_remove_proxy_vote, |
Kyle Yan | 5ea3895 | 2017-08-03 16:05:55 -0700 | [diff] [blame] | 834 | .deinit_image = pil_deinit_image_trusted, |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 835 | }; |
| 836 | |
| 837 | static void log_failure_reason(const struct pil_tz_data *d) |
| 838 | { |
| 839 | u32 size; |
| 840 | char *smem_reason, reason[MAX_SSR_REASON_LEN]; |
| 841 | const char *name = d->subsys_desc.name; |
| 842 | |
| 843 | if (d->smem_id == -1) |
| 844 | return; |
| 845 | |
| 846 | smem_reason = smem_get_entry_no_rlock(d->smem_id, &size, 0, |
| 847 | SMEM_ANY_HOST_FLAG); |
| 848 | if (!smem_reason || !size) { |
| 849 | pr_err("%s SFR: (unknown, smem_get_entry_no_rlock failed).\n", |
| 850 | name); |
| 851 | return; |
| 852 | } |
| 853 | if (!smem_reason[0]) { |
| 854 | pr_err("%s SFR: (unknown, empty string found).\n", name); |
| 855 | return; |
| 856 | } |
| 857 | |
| 858 | strlcpy(reason, smem_reason, min(size, MAX_SSR_REASON_LEN)); |
| 859 | pr_err("%s subsystem failure reason: %s.\n", name, reason); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 860 | } |
| 861 | |
| 862 | static int subsys_shutdown(const struct subsys_desc *subsys, bool force_stop) |
| 863 | { |
| 864 | struct pil_tz_data *d = subsys_to_data(subsys); |
| 865 | int ret; |
| 866 | |
| 867 | if (!subsys_get_crash_status(d->subsys) && force_stop && |
| 868 | subsys->force_stop_gpio) { |
| 869 | gpio_set_value(subsys->force_stop_gpio, 1); |
| 870 | ret = wait_for_completion_timeout(&d->stop_ack, |
| 871 | msecs_to_jiffies(STOP_ACK_TIMEOUT_MS)); |
| 872 | if (!ret) |
| 873 | pr_warn("Timed out on stop ack from %s.\n", |
| 874 | subsys->name); |
| 875 | gpio_set_value(subsys->force_stop_gpio, 0); |
| 876 | } |
| 877 | |
| 878 | pil_shutdown(&d->desc); |
| 879 | return 0; |
| 880 | } |
| 881 | |
| 882 | static int subsys_powerup(const struct subsys_desc *subsys) |
| 883 | { |
| 884 | struct pil_tz_data *d = subsys_to_data(subsys); |
| 885 | int ret = 0; |
| 886 | |
| 887 | if (subsys->stop_ack_irq) |
| 888 | reinit_completion(&d->stop_ack); |
| 889 | |
| 890 | d->desc.fw_name = subsys->fw_name; |
| 891 | ret = pil_boot(&d->desc); |
| 892 | |
| 893 | return ret; |
| 894 | } |
| 895 | |
| 896 | static int subsys_ramdump(int enable, const struct subsys_desc *subsys) |
| 897 | { |
| 898 | struct pil_tz_data *d = subsys_to_data(subsys); |
| 899 | |
| 900 | if (!enable) |
| 901 | return 0; |
| 902 | |
| 903 | return pil_do_ramdump(&d->desc, d->ramdump_dev); |
| 904 | } |
| 905 | |
| 906 | static void subsys_free_memory(const struct subsys_desc *subsys) |
| 907 | { |
| 908 | struct pil_tz_data *d = subsys_to_data(subsys); |
| 909 | |
| 910 | pil_free_memory(&d->desc); |
| 911 | } |
| 912 | |
| 913 | static void subsys_crash_shutdown(const struct subsys_desc *subsys) |
| 914 | { |
| 915 | struct pil_tz_data *d = subsys_to_data(subsys); |
| 916 | |
| 917 | if (subsys->force_stop_gpio > 0 && |
| 918 | !subsys_get_crash_status(d->subsys)) { |
| 919 | gpio_set_value(subsys->force_stop_gpio, 1); |
| 920 | mdelay(CRASH_STOP_ACK_TO_MS); |
| 921 | } |
| 922 | } |
| 923 | |
| 924 | static irqreturn_t subsys_err_fatal_intr_handler (int irq, void *dev_id) |
| 925 | { |
| 926 | struct pil_tz_data *d = subsys_to_data(dev_id); |
Avaneesh Kumar Dwivedi | 94619d9 | 2017-10-05 17:58:38 +0530 | [diff] [blame] | 927 | u32 nmi_status = 0; |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 928 | |
Avaneesh Kumar Dwivedi | 94619d9 | 2017-10-05 17:58:38 +0530 | [diff] [blame] | 929 | if (d->reg_base) |
| 930 | nmi_status = readl_relaxed(d->reg_base + |
| 931 | QDSP6SS_NMI_STATUS); |
| 932 | |
| 933 | if (nmi_status & 0x04) |
| 934 | pr_err("%s: Fatal error on the %s due to TZ NMI\n", |
| 935 | __func__, d->subsys_desc.name); |
| 936 | else |
| 937 | pr_err("%s Fatal error on the %s\n", |
| 938 | __func__, d->subsys_desc.name); |
| 939 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 940 | if (subsys_get_crash_status(d->subsys)) { |
| 941 | pr_err("%s: Ignoring error fatal, restart in progress\n", |
| 942 | d->subsys_desc.name); |
| 943 | return IRQ_HANDLED; |
| 944 | } |
Satya Durga Srinivasu Prabhala | 30af7d0 | 2016-12-15 13:33:39 -0800 | [diff] [blame] | 945 | subsys_set_crash_status(d->subsys, CRASH_STATUS_ERR_FATAL); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 946 | log_failure_reason(d); |
| 947 | subsystem_restart_dev(d->subsys); |
| 948 | |
| 949 | return IRQ_HANDLED; |
| 950 | } |
| 951 | |
| 952 | static irqreturn_t subsys_wdog_bite_irq_handler(int irq, void *dev_id) |
| 953 | { |
| 954 | struct pil_tz_data *d = subsys_to_data(dev_id); |
| 955 | |
| 956 | if (subsys_get_crash_status(d->subsys)) |
| 957 | return IRQ_HANDLED; |
| 958 | pr_err("Watchdog bite received from %s!\n", d->subsys_desc.name); |
| 959 | |
| 960 | if (d->subsys_desc.system_debug && |
| 961 | !gpio_get_value(d->subsys_desc.err_fatal_gpio)) |
| 962 | panic("%s: System ramdump requested. Triggering device restart!\n", |
| 963 | __func__); |
Satya Durga Srinivasu Prabhala | 30af7d0 | 2016-12-15 13:33:39 -0800 | [diff] [blame] | 964 | subsys_set_crash_status(d->subsys, CRASH_STATUS_WDOG_BITE); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 965 | log_failure_reason(d); |
| 966 | subsystem_restart_dev(d->subsys); |
| 967 | |
| 968 | return IRQ_HANDLED; |
| 969 | } |
| 970 | |
| 971 | static irqreturn_t subsys_stop_ack_intr_handler(int irq, void *dev_id) |
| 972 | { |
| 973 | struct pil_tz_data *d = subsys_to_data(dev_id); |
| 974 | |
| 975 | pr_info("Received stop ack interrupt from %s\n", d->subsys_desc.name); |
| 976 | complete(&d->stop_ack); |
| 977 | return IRQ_HANDLED; |
| 978 | } |
| 979 | |
Puja Gupta | 557f529 | 2016-11-28 14:01:03 -0800 | [diff] [blame] | 980 | static void clear_pbl_done(struct pil_tz_data *d) |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 981 | { |
| 982 | uint32_t err_value; |
| 983 | |
| 984 | err_value = __raw_readl(d->err_status); |
| 985 | pr_debug("PBL_DONE received from %s!\n", d->subsys_desc.name); |
| 986 | if (err_value) { |
| 987 | uint32_t rmb_err_spare0; |
| 988 | uint32_t rmb_err_spare1; |
| 989 | uint32_t rmb_err_spare2; |
| 990 | |
| 991 | rmb_err_spare2 = __raw_readl(d->err_status_spare); |
| 992 | rmb_err_spare1 = __raw_readl(d->err_status_spare-4); |
| 993 | rmb_err_spare0 = __raw_readl(d->err_status_spare-8); |
| 994 | |
| 995 | pr_err("PBL error status register: 0x%08x\n", err_value); |
| 996 | |
| 997 | pr_err("PBL error status spare0 register: 0x%08x\n", |
| 998 | rmb_err_spare0); |
| 999 | pr_err("PBL error status spare1 register: 0x%08x\n", |
| 1000 | rmb_err_spare1); |
| 1001 | pr_err("PBL error status spare2 register: 0x%08x\n", |
| 1002 | rmb_err_spare2); |
| 1003 | } |
| 1004 | __raw_writel(BIT(d->bits_arr[PBL_DONE]), d->irq_clear); |
| 1005 | } |
| 1006 | |
Puja Gupta | 557f529 | 2016-11-28 14:01:03 -0800 | [diff] [blame] | 1007 | static void clear_err_ready(struct pil_tz_data *d) |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1008 | { |
Puja Gupta | 557f529 | 2016-11-28 14:01:03 -0800 | [diff] [blame] | 1009 | pr_debug("Subsystem error services up received from %s\n", |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1010 | d->subsys_desc.name); |
Puja Gupta | 557f529 | 2016-11-28 14:01:03 -0800 | [diff] [blame] | 1011 | __raw_writel(BIT(d->bits_arr[ERR_READY]), d->irq_clear); |
| 1012 | complete_err_ready(d->subsys); |
| 1013 | } |
| 1014 | |
| 1015 | static void clear_wdog(struct pil_tz_data *d) |
| 1016 | { |
| 1017 | /* Check crash status to know if device is restarting*/ |
| 1018 | if (!subsys_get_crash_status(d->subsys)) { |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1019 | pr_err("wdog bite received from %s!\n", d->subsys_desc.name); |
| 1020 | __raw_writel(BIT(d->bits_arr[ERR_READY]), d->irq_clear); |
Satya Durga Srinivasu Prabhala | 30af7d0 | 2016-12-15 13:33:39 -0800 | [diff] [blame] | 1021 | subsys_set_crash_status(d->subsys, CRASH_STATUS_WDOG_BITE); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1022 | log_failure_reason(d); |
| 1023 | subsystem_restart_dev(d->subsys); |
| 1024 | } |
| 1025 | } |
| 1026 | |
| 1027 | static irqreturn_t subsys_generic_handler(int irq, void *dev_id) |
| 1028 | { |
| 1029 | struct pil_tz_data *d = subsys_to_data(dev_id); |
Puja Gupta | 557f529 | 2016-11-28 14:01:03 -0800 | [diff] [blame] | 1030 | uint32_t status_val, err_value; |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1031 | |
Puja Gupta | 557f529 | 2016-11-28 14:01:03 -0800 | [diff] [blame] | 1032 | err_value = __raw_readl(d->err_status_spare); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1033 | status_val = __raw_readl(d->irq_status); |
| 1034 | |
Puja Gupta | 557f529 | 2016-11-28 14:01:03 -0800 | [diff] [blame] | 1035 | if ((status_val & BIT(d->bits_arr[ERR_READY])) && !err_value) |
| 1036 | clear_err_ready(d); |
| 1037 | |
| 1038 | if ((status_val & BIT(d->bits_arr[ERR_READY])) && |
| 1039 | err_value == 0x44554d50) |
| 1040 | clear_wdog(d); |
| 1041 | |
| 1042 | if (status_val & BIT(d->bits_arr[PBL_DONE])) |
| 1043 | clear_pbl_done(d); |
| 1044 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1045 | return IRQ_HANDLED; |
| 1046 | } |
| 1047 | |
| 1048 | static void mask_scsr_irqs(struct pil_tz_data *d) |
| 1049 | { |
| 1050 | uint32_t mask_val; |
| 1051 | /* Masking all interrupts not handled by HLOS */ |
| 1052 | mask_val = ~0; |
| 1053 | __raw_writel(mask_val & ~BIT(d->bits_arr[ERR_READY]) & |
| 1054 | ~BIT(d->bits_arr[PBL_DONE]), d->irq_mask); |
| 1055 | } |
| 1056 | |
| 1057 | static int pil_tz_driver_probe(struct platform_device *pdev) |
| 1058 | { |
| 1059 | struct pil_tz_data *d; |
| 1060 | struct resource *res; |
| 1061 | u32 proxy_timeout; |
| 1062 | int len, rc; |
| 1063 | |
| 1064 | d = devm_kzalloc(&pdev->dev, sizeof(*d), GFP_KERNEL); |
| 1065 | if (!d) |
| 1066 | return -ENOMEM; |
| 1067 | platform_set_drvdata(pdev, d); |
| 1068 | |
| 1069 | if (of_property_read_bool(pdev->dev.of_node, "qcom,pil-no-auth")) |
| 1070 | d->subsys_desc.no_auth = true; |
| 1071 | |
| 1072 | d->keep_proxy_regs_on = of_property_read_bool(pdev->dev.of_node, |
| 1073 | "qcom,keep-proxy-regs-on"); |
| 1074 | |
Avaneesh Kumar Dwivedi | 94619d9 | 2017-10-05 17:58:38 +0530 | [diff] [blame] | 1075 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "base_reg"); |
| 1076 | d->reg_base = devm_ioremap_resource(&pdev->dev, res); |
| 1077 | if (IS_ERR(d->reg_base)) { |
| 1078 | dev_err(&pdev->dev, "Failed to ioremap base register\n"); |
| 1079 | d->reg_base = NULL; |
| 1080 | } |
| 1081 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1082 | rc = of_property_read_string(pdev->dev.of_node, "qcom,firmware-name", |
| 1083 | &d->desc.name); |
| 1084 | if (rc) |
| 1085 | return rc; |
| 1086 | |
| 1087 | /* Defaulting smem_id to be not present */ |
| 1088 | d->smem_id = -1; |
| 1089 | |
| 1090 | if (of_find_property(pdev->dev.of_node, "qcom,smem-id", &len)) { |
| 1091 | rc = of_property_read_u32(pdev->dev.of_node, "qcom,smem-id", |
| 1092 | &d->smem_id); |
| 1093 | if (rc) { |
| 1094 | dev_err(&pdev->dev, "Failed to get the smem_id(rc:%d)\n", |
| 1095 | rc); |
| 1096 | return rc; |
| 1097 | } |
| 1098 | } |
| 1099 | |
| 1100 | d->desc.dev = &pdev->dev; |
| 1101 | d->desc.owner = THIS_MODULE; |
| 1102 | d->desc.ops = &pil_ops_trusted; |
| 1103 | |
| 1104 | d->desc.proxy_timeout = PROXY_TIMEOUT_MS; |
Avaneesh Kumar Dwivedi | 7b506d2 | 2017-03-17 16:41:13 +0530 | [diff] [blame] | 1105 | d->desc.clear_fw_region = true; |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1106 | |
| 1107 | rc = of_property_read_u32(pdev->dev.of_node, "qcom,proxy-timeout-ms", |
| 1108 | &proxy_timeout); |
| 1109 | if (!rc) |
| 1110 | d->desc.proxy_timeout = proxy_timeout; |
| 1111 | |
| 1112 | if (!d->subsys_desc.no_auth) { |
| 1113 | rc = piltz_resc_init(pdev, d); |
| 1114 | if (rc) |
Kyle Yan | 3d6600c | 2017-01-06 14:04:26 -0800 | [diff] [blame] | 1115 | return rc; |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1116 | |
| 1117 | rc = of_property_read_u32(pdev->dev.of_node, "qcom,pas-id", |
| 1118 | &d->pas_id); |
| 1119 | if (rc) { |
| 1120 | dev_err(&pdev->dev, "Failed to find the pas_id(rc:%d)\n", |
| 1121 | rc); |
| 1122 | return rc; |
| 1123 | } |
Kyle Yan | 9f57f57 | 2017-03-28 10:31:54 -0700 | [diff] [blame] | 1124 | scm_pas_init(MSM_BUS_MASTER_CRYPTO_CORE_0); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1125 | } |
| 1126 | |
| 1127 | rc = pil_desc_init(&d->desc); |
| 1128 | if (rc) |
| 1129 | return rc; |
| 1130 | |
| 1131 | init_completion(&d->stop_ack); |
| 1132 | |
| 1133 | d->subsys_desc.name = d->desc.name; |
| 1134 | d->subsys_desc.owner = THIS_MODULE; |
| 1135 | d->subsys_desc.dev = &pdev->dev; |
| 1136 | d->subsys_desc.shutdown = subsys_shutdown; |
| 1137 | d->subsys_desc.powerup = subsys_powerup; |
| 1138 | d->subsys_desc.ramdump = subsys_ramdump; |
| 1139 | d->subsys_desc.free_memory = subsys_free_memory; |
| 1140 | d->subsys_desc.crash_shutdown = subsys_crash_shutdown; |
| 1141 | if (of_property_read_bool(pdev->dev.of_node, |
| 1142 | "qcom,pil-generic-irq-handler")) { |
| 1143 | d->subsys_desc.generic_handler = subsys_generic_handler; |
| 1144 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 1145 | "sp2soc_irq_status"); |
| 1146 | d->irq_status = devm_ioremap_resource(&pdev->dev, res); |
Jitendra Sharma | 76e0c84 | 2017-10-25 16:16:36 +0530 | [diff] [blame] | 1147 | if (IS_ERR(d->irq_status)) { |
| 1148 | dev_err(&pdev->dev, "Invalid resource for sp2soc_irq_status\n"); |
| 1149 | rc = PTR_ERR(d->irq_status); |
| 1150 | goto err_ramdump; |
| 1151 | } |
| 1152 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1153 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 1154 | "sp2soc_irq_clr"); |
| 1155 | d->irq_clear = devm_ioremap_resource(&pdev->dev, res); |
Jitendra Sharma | 76e0c84 | 2017-10-25 16:16:36 +0530 | [diff] [blame] | 1156 | if (IS_ERR(d->irq_clear)) { |
| 1157 | dev_err(&pdev->dev, "Invalid resource for sp2soc_irq_clr\n"); |
| 1158 | rc = PTR_ERR(d->irq_clear); |
| 1159 | goto err_ramdump; |
| 1160 | } |
| 1161 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1162 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 1163 | "sp2soc_irq_mask"); |
| 1164 | d->irq_mask = devm_ioremap_resource(&pdev->dev, res); |
Jitendra Sharma | 76e0c84 | 2017-10-25 16:16:36 +0530 | [diff] [blame] | 1165 | if (IS_ERR(d->irq_mask)) { |
| 1166 | dev_err(&pdev->dev, "Invalid resource for sp2soc_irq_mask\n"); |
| 1167 | rc = PTR_ERR(d->irq_mask); |
| 1168 | goto err_ramdump; |
| 1169 | } |
| 1170 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1171 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 1172 | "rmb_err"); |
| 1173 | d->err_status = devm_ioremap_resource(&pdev->dev, res); |
Jitendra Sharma | 76e0c84 | 2017-10-25 16:16:36 +0530 | [diff] [blame] | 1174 | if (IS_ERR(d->err_status)) { |
| 1175 | dev_err(&pdev->dev, "Invalid resource for rmb_err\n"); |
| 1176 | rc = PTR_ERR(d->err_status); |
| 1177 | goto err_ramdump; |
| 1178 | } |
| 1179 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1180 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 1181 | "rmb_err_spare2"); |
| 1182 | d->err_status_spare = devm_ioremap_resource(&pdev->dev, res); |
Jitendra Sharma | 76e0c84 | 2017-10-25 16:16:36 +0530 | [diff] [blame] | 1183 | if (IS_ERR(d->err_status_spare)) { |
| 1184 | dev_err(&pdev->dev, "Invalid resource for rmb_err_spare2\n"); |
| 1185 | rc = PTR_ERR(d->err_status_spare); |
| 1186 | goto err_ramdump; |
| 1187 | } |
| 1188 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1189 | rc = of_property_read_u32_array(pdev->dev.of_node, |
| 1190 | "qcom,spss-scsr-bits", d->bits_arr, sizeof(d->bits_arr)/ |
| 1191 | sizeof(d->bits_arr[0])); |
Jitendra Sharma | 76e0c84 | 2017-10-25 16:16:36 +0530 | [diff] [blame] | 1192 | if (rc) { |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1193 | dev_err(&pdev->dev, "Failed to read qcom,spss-scsr-bits"); |
Jitendra Sharma | 76e0c84 | 2017-10-25 16:16:36 +0530 | [diff] [blame] | 1194 | goto err_ramdump; |
| 1195 | } |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1196 | mask_scsr_irqs(d); |
| 1197 | |
| 1198 | } else { |
| 1199 | d->subsys_desc.err_fatal_handler = |
| 1200 | subsys_err_fatal_intr_handler; |
| 1201 | d->subsys_desc.wdog_bite_handler = subsys_wdog_bite_irq_handler; |
| 1202 | d->subsys_desc.stop_ack_handler = subsys_stop_ack_intr_handler; |
| 1203 | } |
Kyle Yan | 0ceeb64 | 2017-09-13 11:21:35 -0700 | [diff] [blame] | 1204 | d->desc.signal_aop = of_property_read_bool(pdev->dev.of_node, |
| 1205 | "qcom,signal-aop"); |
| 1206 | if (d->desc.signal_aop) { |
| 1207 | d->desc.cl.dev = &pdev->dev; |
| 1208 | d->desc.cl.tx_block = true; |
| 1209 | d->desc.cl.tx_tout = 1000; |
| 1210 | d->desc.cl.knows_txdone = false; |
| 1211 | d->desc.mbox = mbox_request_channel(&d->desc.cl, 0); |
| 1212 | if (IS_ERR(d->desc.mbox)) { |
| 1213 | rc = PTR_ERR(d->desc.mbox); |
| 1214 | dev_err(&pdev->dev, "Failed to get mailbox channel %pK %d\n", |
| 1215 | d->desc.mbox, rc); |
| 1216 | goto err_ramdump; |
| 1217 | } |
| 1218 | } |
| 1219 | |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1220 | d->ramdump_dev = create_ramdump_device(d->subsys_desc.name, |
| 1221 | &pdev->dev); |
| 1222 | if (!d->ramdump_dev) { |
| 1223 | rc = -ENOMEM; |
| 1224 | goto err_ramdump; |
| 1225 | } |
| 1226 | |
| 1227 | d->subsys = subsys_register(&d->subsys_desc); |
| 1228 | if (IS_ERR(d->subsys)) { |
| 1229 | rc = PTR_ERR(d->subsys); |
| 1230 | goto err_subsys; |
| 1231 | } |
| 1232 | |
| 1233 | return 0; |
| 1234 | err_subsys: |
| 1235 | destroy_ramdump_device(d->ramdump_dev); |
| 1236 | err_ramdump: |
| 1237 | pil_desc_release(&d->desc); |
Jitendra Sharma | 76e0c84 | 2017-10-25 16:16:36 +0530 | [diff] [blame] | 1238 | platform_set_drvdata(pdev, NULL); |
Kyle Yan | e45fa02 | 2016-08-29 11:40:26 -0700 | [diff] [blame] | 1239 | |
| 1240 | return rc; |
| 1241 | } |
| 1242 | |
| 1243 | static int pil_tz_driver_exit(struct platform_device *pdev) |
| 1244 | { |
| 1245 | struct pil_tz_data *d = platform_get_drvdata(pdev); |
| 1246 | |
| 1247 | subsys_unregister(d->subsys); |
| 1248 | destroy_ramdump_device(d->ramdump_dev); |
| 1249 | pil_desc_release(&d->desc); |
| 1250 | |
| 1251 | return 0; |
| 1252 | } |
| 1253 | |
| 1254 | static const struct of_device_id pil_tz_match_table[] = { |
| 1255 | {.compatible = "qcom,pil-tz-generic"}, |
| 1256 | {} |
| 1257 | }; |
| 1258 | |
| 1259 | static struct platform_driver pil_tz_driver = { |
| 1260 | .probe = pil_tz_driver_probe, |
| 1261 | .remove = pil_tz_driver_exit, |
| 1262 | .driver = { |
| 1263 | .name = "subsys-pil-tz", |
| 1264 | .of_match_table = pil_tz_match_table, |
| 1265 | .owner = THIS_MODULE, |
| 1266 | }, |
| 1267 | }; |
| 1268 | |
| 1269 | static int __init pil_tz_init(void) |
| 1270 | { |
| 1271 | return platform_driver_register(&pil_tz_driver); |
| 1272 | } |
| 1273 | module_init(pil_tz_init); |
| 1274 | |
| 1275 | static void __exit pil_tz_exit(void) |
| 1276 | { |
| 1277 | platform_driver_unregister(&pil_tz_driver); |
| 1278 | } |
| 1279 | module_exit(pil_tz_exit); |
| 1280 | |
| 1281 | MODULE_DESCRIPTION("Support for booting subsystems"); |
| 1282 | MODULE_LICENSE("GPL v2"); |