drivers/remoteproc/qcom_adsp_pil.c

   1 /*
   2  * Qualcomm ADSP/SLPI Peripheral Image Loader for MSM8974 and MSM8996
   3  *
   4  * Copyright (C) 2016 Linaro Ltd
   5  * Copyright (C) 2014 Sony Mobile Communications AB
   6  * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  */
  17
  18 #include <linux/clk.h>
  19 #include <linux/firmware.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/kernel.h>
  22 #include <linux/module.h>
  23 #include <linux/of_address.h>
  24 #include <linux/of_device.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/qcom_scm.h>
  27 #include <linux/regulator/consumer.h>
  28 #include <linux/remoteproc.h>
  29 #include <linux/soc/qcom/mdt_loader.h>
  30 #include <linux/soc/qcom/smem.h>
  31 #include <linux/soc/qcom/smem_state.h>
  32
  33 #include "qcom_common.h"
  34 #include "qcom_q6v5.h"
  35 #include "remoteproc_internal.h"
  36
  37 struct adsp_data {
  38         int crash_reason_smem;
  39         const char *firmware_name;
  40         int pas_id;
  41         bool has_aggre2_clk;
  42
  43         const char *ssr_name;
  44         const char *sysmon_name;
  45         int ssctl_id;
  46 };
  47
  48 struct qcom_adsp {
  49         struct device *dev;
  50         struct rproc *rproc;
  51
  52         struct qcom_q6v5 q6v5;
  53
  54         struct clk *xo;
  55         struct clk *aggre2_clk;
  56
  57         struct regulator *cx_supply;
  58         struct regulator *px_supply;
  59
  60         int pas_id;
  61         int crash_reason_smem;
  62         bool has_aggre2_clk;
  63
  64         struct completion start_done;
  65         struct completion stop_done;
  66
  67         phys_addr_t mem_phys;
  68         phys_addr_t mem_reloc;
  69         void *mem_region;
  70         size_t mem_size;
  71
  72         struct qcom_rproc_glink glink_subdev;
  73         struct qcom_rproc_subdev smd_subdev;
  74         struct qcom_rproc_ssr ssr_subdev;
  75         struct qcom_sysmon *sysmon;
  76 };
  77
  78 static int adsp_load(struct rproc *rproc, const struct firmware *fw)
  79 {
  80         struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
  81
  82         return qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id,
  83                              adsp->mem_region, adsp->mem_phys, adsp->mem_size,
  84                              &adsp->mem_reloc);
  85
  86 }
  87
  88 static int adsp_start(struct rproc *rproc)
  89 {
  90         struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
  91         int ret;
  92
  93         qcom_q6v5_prepare(&adsp->q6v5);
  94
  95         ret = clk_prepare_enable(adsp->xo);
  96         if (ret)
  97                 return ret;
  98
  99         ret = clk_prepare_enable(adsp->aggre2_clk);
 100         if (ret)
 101                 goto disable_xo_clk;
 102
 103         ret = regulator_enable(adsp->cx_supply);
 104         if (ret)
 105                 goto disable_aggre2_clk;
 106
 107         ret = regulator_enable(adsp->px_supply);
 108         if (ret)
 109                 goto disable_cx_supply;
 110
 111         ret = qcom_scm_pas_auth_and_reset(adsp->pas_id);
 112         if (ret) {
 113                 dev_err(adsp->dev,
 114                         "failed to authenticate image and release reset\n");
 115                 goto disable_px_supply;
 116         }
 117
 118         ret = qcom_q6v5_wait_for_start(&adsp->q6v5, msecs_to_jiffies(5000));
 119         if (ret == -ETIMEDOUT) {
 120                 dev_err(adsp->dev, "start timed out\n");
 121                 qcom_scm_pas_shutdown(adsp->pas_id);
 122                 goto disable_px_supply;
 123         }
 124
 125         return 0;
 126
 127 disable_px_supply:
 128         regulator_disable(adsp->px_supply);
 129 disable_cx_supply:
 130         regulator_disable(adsp->cx_supply);
 131 disable_aggre2_clk:
 132         clk_disable_unprepare(adsp->aggre2_clk);
 133 disable_xo_clk:
 134         clk_disable_unprepare(adsp->xo);
 135
 136         return ret;
 137 }
 138
 139 static void qcom_pas_handover(struct qcom_q6v5 *q6v5)
 140 {
 141         struct qcom_adsp *adsp = container_of(q6v5, struct qcom_adsp, q6v5);
 142
 143         regulator_disable(adsp->px_supply);
 144         regulator_disable(adsp->cx_supply);
 145         clk_disable_unprepare(adsp->aggre2_clk);
 146         clk_disable_unprepare(adsp->xo);
 147 }
 148
 149 static int adsp_stop(struct rproc *rproc)
 150 {
 151         struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
 152         int handover;
 153         int ret;
 154
 155         ret = qcom_q6v5_request_stop(&adsp->q6v5);
 156         if (ret == -ETIMEDOUT)
 157                 dev_err(adsp->dev, "timed out on wait\n");
 158
 159         ret = qcom_scm_pas_shutdown(adsp->pas_id);
 160         if (ret)
 161                 dev_err(adsp->dev, "failed to shutdown: %d\n", ret);
 162
 163         handover = qcom_q6v5_unprepare(&adsp->q6v5);
 164         if (handover)
 165                 qcom_pas_handover(&adsp->q6v5);
 166
 167         return ret;
 168 }
 169
 170 static void *adsp_da_to_va(struct rproc *rproc, u64 da, int len)
 171 {
 172         struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
 173         int offset;
 174
 175         offset = da - adsp->mem_reloc;
 176         if (offset < 0 || offset + len > adsp->mem_size)
 177                 return NULL;
 178
 179         return adsp->mem_region + offset;
 180 }
 181
 182 static const struct rproc_ops adsp_ops = {
 183         .start = adsp_start,
 184         .stop = adsp_stop,
 185         .da_to_va = adsp_da_to_va,
 186         .parse_fw = qcom_register_dump_segments,
 187         .load = adsp_load,
 188 };
 189
 190 static int adsp_init_clock(struct qcom_adsp *adsp)
 191 {
 192         int ret;
 193
 194         adsp->xo = devm_clk_get(adsp->dev, "xo");
 195         if (IS_ERR(adsp->xo)) {
 196                 ret = PTR_ERR(adsp->xo);
 197                 if (ret != -EPROBE_DEFER)
 198                         dev_err(adsp->dev, "failed to get xo clock");
 199                 return ret;
 200         }
 201
 202         if (adsp->has_aggre2_clk) {
 203                 adsp->aggre2_clk = devm_clk_get(adsp->dev, "aggre2");
 204                 if (IS_ERR(adsp->aggre2_clk)) {
 205                         ret = PTR_ERR(adsp->aggre2_clk);
 206                         if (ret != -EPROBE_DEFER)
 207                                 dev_err(adsp->dev,
 208                                         "failed to get aggre2 clock");
 209                         return ret;
 210                 }
 211         }
 212
 213         return 0;
 214 }
 215
 216 static int adsp_init_regulator(struct qcom_adsp *adsp)
 217 {
 218         adsp->cx_supply = devm_regulator_get(adsp->dev, "cx");
 219         if (IS_ERR(adsp->cx_supply))
 220                 return PTR_ERR(adsp->cx_supply);
 221
 222         regulator_set_load(adsp->cx_supply, 100000);
 223
 224         adsp->px_supply = devm_regulator_get(adsp->dev, "px");
 225         return PTR_ERR_OR_ZERO(adsp->px_supply);
 226 }
 227
 228 static int adsp_alloc_memory_region(struct qcom_adsp *adsp)
 229 {
 230         struct device_node *node;
 231         struct resource r;
 232         int ret;
 233
 234         node = of_parse_phandle(adsp->dev->of_node, "memory-region", 0);
 235         if (!node) {
 236                 dev_err(adsp->dev, "no memory-region specified\n");
 237                 return -EINVAL;
 238         }
 239
 240         ret = of_address_to_resource(node, 0, &r);
 241         if (ret)
 242                 return ret;
 243
 244         adsp->mem_phys = adsp->mem_reloc = r.start;
 245         adsp->mem_size = resource_size(&r);
 246         adsp->mem_region = devm_ioremap_wc(adsp->dev, adsp->mem_phys, adsp->mem_size);
 247         if (!adsp->mem_region) {
 248                 dev_err(adsp->dev, "unable to map memory region: %pa+%zx\n",
 249                         &r.start, adsp->mem_size);
 250                 return -EBUSY;
 251         }
 252
 253         return 0;
 254 }
 255
 256 static int adsp_probe(struct platform_device *pdev)
 257 {
 258         const struct adsp_data *desc;
 259         struct qcom_adsp *adsp;
 260         struct rproc *rproc;
 261         int ret;
 262
 263         desc = of_device_get_match_data(&pdev->dev);
 264         if (!desc)
 265                 return -EINVAL;
 266
 267         if (!qcom_scm_is_available())
 268                 return -EPROBE_DEFER;
 269
 270         rproc = rproc_alloc(&pdev->dev, pdev->name, &adsp_ops,
 271                             desc->firmware_name, sizeof(*adsp));
 272         if (!rproc) {
 273                 dev_err(&pdev->dev, "unable to allocate remoteproc\n");
 274                 return -ENOMEM;
 275         }
 276
 277         adsp = (struct qcom_adsp *)rproc->priv;
 278         adsp->dev = &pdev->dev;
 279         adsp->rproc = rproc;
 280         adsp->pas_id = desc->pas_id;
 281         adsp->has_aggre2_clk = desc->has_aggre2_clk;
 282         platform_set_drvdata(pdev, adsp);
 283
 284         ret = adsp_alloc_memory_region(adsp);
 285         if (ret)
 286                 goto free_rproc;
 287
 288         ret = adsp_init_clock(adsp);
 289         if (ret)
 290                 goto free_rproc;
 291
 292         ret = adsp_init_regulator(adsp);
 293         if (ret)
 294                 goto free_rproc;
 295
 296         ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, desc->crash_reason_smem,
 297                              qcom_pas_handover);
 298         if (ret)
 299                 goto free_rproc;
 300
 301         qcom_add_glink_subdev(rproc, &adsp->glink_subdev);
 302         qcom_add_smd_subdev(rproc, &adsp->smd_subdev);
 303         qcom_add_ssr_subdev(rproc, &adsp->ssr_subdev, desc->ssr_name);
 304         adsp->sysmon = qcom_add_sysmon_subdev(rproc,
 305                                               desc->sysmon_name,
 306                                               desc->ssctl_id);
 307
 308         ret = rproc_add(rproc);
 309         if (ret)
 310                 goto free_rproc;
 311
 312         return 0;
 313
 314 free_rproc:
 315         rproc_free(rproc);
 316
 317         return ret;
 318 }
 319
 320 static int adsp_remove(struct platform_device *pdev)
 321 {
 322         struct qcom_adsp *adsp = platform_get_drvdata(pdev);
 323
 324         rproc_del(adsp->rproc);
 325
 326         qcom_remove_glink_subdev(adsp->rproc, &adsp->glink_subdev);
 327         qcom_remove_sysmon_subdev(adsp->sysmon);
 328         qcom_remove_smd_subdev(adsp->rproc, &adsp->smd_subdev);
 329         qcom_remove_ssr_subdev(adsp->rproc, &adsp->ssr_subdev);
 330         rproc_free(adsp->rproc);
 331
 332         return 0;
 333 }
 334
 335 static const struct adsp_data adsp_resource_init = {
 336                 .crash_reason_smem = 423,
 337                 .firmware_name = "adsp.mdt",
 338                 .pas_id = 1,
 339                 .has_aggre2_clk = false,
 340                 .ssr_name = "lpass",
 341                 .sysmon_name = "adsp",
 342                 .ssctl_id = 0x14,
 343 };
 344
 345 static const struct adsp_data slpi_resource_init = {
 346                 .crash_reason_smem = 424,
 347                 .firmware_name = "slpi.mdt",
 348                 .pas_id = 12,
 349                 .has_aggre2_clk = true,
 350                 .ssr_name = "dsps",
 351                 .sysmon_name = "slpi",
 352                 .ssctl_id = 0x16,
 353 };
 354
 355 static const struct of_device_id adsp_of_match[] = {
 356         { .compatible = "qcom,msm8974-adsp-pil", .data = &adsp_resource_init},
 357         { .compatible = "qcom,msm8996-adsp-pil", .data = &adsp_resource_init},
 358         { .compatible = "qcom,msm8996-slpi-pil", .data = &slpi_resource_init},
 359         { },
 360 };
 361 MODULE_DEVICE_TABLE(of, adsp_of_match);
 362
 363 static struct platform_driver adsp_driver = {
 364         .probe = adsp_probe,
 365         .remove = adsp_remove,
 366         .driver = {
 367                 .name = "qcom_adsp_pil",
 368                 .of_match_table = adsp_of_match,
 369         },
 370 };
 371
 372 module_platform_driver(adsp_driver);
 373 MODULE_DESCRIPTION("Qualcomm MSM8974/MSM8996 ADSP Peripherial Image Loader");
 374 MODULE_LICENSE("GPL v2");