1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
3 // This file is provided under a dual BSD/GPLv2 license. When using or
4 // redistributing this file, you may do so under either license.
6 // Copyright(c) 2018 Intel Corporation. All rights reserved.
8 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
11 #include <linux/firmware.h>
12 #include <linux/module.h>
13 #include <sound/soc.h>
14 #include <sound/sof.h>
18 /* see SOF_DBG_ flags */
20 module_param_named(sof_debug, sof_core_debug, int, 0444);
21 MODULE_PARM_DESC(sof_debug, "SOF core debug options (0x0 all off)");
23 /* SOF defaults if not provided by the platform in ms */
24 #define TIMEOUT_DEFAULT_IPC_MS 500
25 #define TIMEOUT_DEFAULT_BOOT_MS 2000
28 * FW Panic/fault handling.
31 struct sof_panic_msg {
36 /* standard FW panic types */
37 static const struct sof_panic_msg panic_msg[] = {
38 {SOF_IPC_PANIC_MEM, "out of memory"},
39 {SOF_IPC_PANIC_WORK, "work subsystem init failed"},
40 {SOF_IPC_PANIC_IPC, "IPC subsystem init failed"},
41 {SOF_IPC_PANIC_ARCH, "arch init failed"},
42 {SOF_IPC_PANIC_PLATFORM, "platform init failed"},
43 {SOF_IPC_PANIC_TASK, "scheduler init failed"},
44 {SOF_IPC_PANIC_EXCEPTION, "runtime exception"},
45 {SOF_IPC_PANIC_DEADLOCK, "deadlock"},
46 {SOF_IPC_PANIC_STACK, "stack overflow"},
47 {SOF_IPC_PANIC_IDLE, "can't enter idle"},
48 {SOF_IPC_PANIC_WFI, "invalid wait state"},
49 {SOF_IPC_PANIC_ASSERT, "assertion failed"},
53 * helper to be called from .dbg_dump callbacks. No error code is
54 * provided, it's left as an exercise for the caller of .dbg_dump
55 * (typically IPC or loader)
57 void snd_sof_get_status(struct snd_sof_dev *sdev, u32 panic_code,
58 u32 tracep_code, void *oops,
59 struct sof_ipc_panic_info *panic_info,
60 void *stack, size_t stack_words)
65 /* is firmware dead ? */
66 if ((panic_code & SOF_IPC_PANIC_MAGIC_MASK) != SOF_IPC_PANIC_MAGIC) {
67 dev_err(sdev->dev, "error: unexpected fault 0x%8.8x trace 0x%8.8x\n",
68 panic_code, tracep_code);
69 return; /* no fault ? */
72 code = panic_code & (SOF_IPC_PANIC_MAGIC_MASK | SOF_IPC_PANIC_CODE_MASK);
74 for (i = 0; i < ARRAY_SIZE(panic_msg); i++) {
75 if (panic_msg[i].id == code) {
76 dev_err(sdev->dev, "error: %s\n", panic_msg[i].msg);
77 dev_err(sdev->dev, "error: trace point %8.8x\n",
84 dev_err(sdev->dev, "error: unknown reason %8.8x\n", panic_code);
85 dev_err(sdev->dev, "error: trace point %8.8x\n", tracep_code);
88 dev_err(sdev->dev, "error: panic at %s:%d\n",
89 panic_info->filename, panic_info->linenum);
91 sof_stack(sdev, oops, stack, stack_words);
93 EXPORT_SYMBOL(snd_sof_get_status);
95 static int sof_probe_continue(struct snd_sof_dev *sdev)
97 struct snd_sof_pdata *plat_data = sdev->pdata;
100 /* probe the DSP hardware */
101 ret = snd_sof_probe(sdev);
103 dev_err(sdev->dev, "error: failed to probe DSP %d\n", ret);
107 /* check machine info */
108 ret = sof_machine_check(sdev);
110 dev_err(sdev->dev, "error: failed to get machine info %d\n",
115 /* set up platform component driver */
116 snd_sof_new_platform_drv(sdev);
118 /* register any debug/trace capabilities */
119 ret = snd_sof_dbg_init(sdev);
122 * debugfs issues are suppressed in snd_sof_dbg_init() since
123 * we cannot rely on debugfs
124 * here we trap errors due to memory allocation only.
126 dev_err(sdev->dev, "error: failed to init DSP trace/debug %d\n",
132 sdev->ipc = snd_sof_ipc_init(sdev);
134 dev_err(sdev->dev, "error: failed to init DSP IPC %d\n", ret);
138 /* load the firmware */
139 ret = snd_sof_load_firmware(sdev);
141 dev_err(sdev->dev, "error: failed to load DSP firmware %d\n",
146 /* boot the firmware */
147 ret = snd_sof_run_firmware(sdev);
149 dev_err(sdev->dev, "error: failed to boot DSP firmware %d\n",
154 if (IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_FIRMWARE_TRACE) ||
155 (sof_core_debug & SOF_DBG_ENABLE_TRACE)) {
156 sdev->dtrace_is_supported = true;
159 ret = snd_sof_init_trace(sdev);
163 "warning: failed to initialize trace %d\n",
167 dev_dbg(sdev->dev, "SOF firmware trace disabled\n");
170 /* hereafter all FW boot flows are for PM reasons */
171 sdev->first_boot = false;
173 /* now register audio DSP platform driver and dai */
174 ret = devm_snd_soc_register_component(sdev->dev, &sdev->plat_drv,
176 sof_ops(sdev)->num_drv);
179 "error: failed to register DSP DAI driver %d\n", ret);
183 ret = snd_sof_machine_register(sdev, plat_data);
188 * Some platforms in SOF, ex: BYT, may not have their platform PM
189 * callbacks set. Increment the usage count so as to
190 * prevent the device from entering runtime suspend.
192 if (!sof_ops(sdev)->runtime_suspend || !sof_ops(sdev)->runtime_resume)
193 pm_runtime_get_noresume(sdev->dev);
195 if (plat_data->sof_probe_complete)
196 plat_data->sof_probe_complete(sdev->dev);
200 #if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
202 snd_sof_fw_unload(sdev);
204 snd_sof_ipc_free(sdev);
206 snd_sof_free_debug(sdev);
208 snd_sof_remove(sdev);
212 * when the probe_continue is handled in a work queue, the
213 * probe does not fail so we don't release resources here.
214 * They will be released with an explicit call to
215 * snd_sof_device_remove() when the PCI/ACPI device is removed
228 static void sof_probe_work(struct work_struct *work)
230 struct snd_sof_dev *sdev =
231 container_of(work, struct snd_sof_dev, probe_work);
234 ret = sof_probe_continue(sdev);
236 /* errors cannot be propagated, log */
237 dev_err(sdev->dev, "error: %s failed err: %d\n", __func__, ret);
241 int snd_sof_device_probe(struct device *dev, struct snd_sof_pdata *plat_data)
243 struct snd_sof_dev *sdev;
245 sdev = devm_kzalloc(dev, sizeof(*sdev), GFP_KERNEL);
249 /* initialize sof device */
252 /* initialize default D0 sub-state */
253 sdev->d0_substate = SOF_DSP_D0I0;
255 sdev->pdata = plat_data;
256 sdev->first_boot = true;
257 dev_set_drvdata(dev, sdev);
259 /* check all mandatory ops */
260 if (!sof_ops(sdev) || !sof_ops(sdev)->probe || !sof_ops(sdev)->run ||
261 !sof_ops(sdev)->block_read || !sof_ops(sdev)->block_write ||
262 !sof_ops(sdev)->send_msg || !sof_ops(sdev)->load_firmware ||
263 !sof_ops(sdev)->ipc_msg_data || !sof_ops(sdev)->ipc_pcm_params ||
264 !sof_ops(sdev)->fw_ready)
267 INIT_LIST_HEAD(&sdev->pcm_list);
268 INIT_LIST_HEAD(&sdev->kcontrol_list);
269 INIT_LIST_HEAD(&sdev->widget_list);
270 INIT_LIST_HEAD(&sdev->dai_list);
271 INIT_LIST_HEAD(&sdev->route_list);
272 spin_lock_init(&sdev->ipc_lock);
273 spin_lock_init(&sdev->hw_lock);
275 if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE))
276 INIT_WORK(&sdev->probe_work, sof_probe_work);
278 /* set default timeouts if none provided */
279 if (plat_data->desc->ipc_timeout == 0)
280 sdev->ipc_timeout = TIMEOUT_DEFAULT_IPC_MS;
282 sdev->ipc_timeout = plat_data->desc->ipc_timeout;
283 if (plat_data->desc->boot_timeout == 0)
284 sdev->boot_timeout = TIMEOUT_DEFAULT_BOOT_MS;
286 sdev->boot_timeout = plat_data->desc->boot_timeout;
288 if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) {
289 schedule_work(&sdev->probe_work);
293 return sof_probe_continue(sdev);
295 EXPORT_SYMBOL(snd_sof_device_probe);
297 int snd_sof_device_remove(struct device *dev)
299 struct snd_sof_dev *sdev = dev_get_drvdata(dev);
300 struct snd_sof_pdata *pdata = sdev->pdata;
302 if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE))
303 cancel_work_sync(&sdev->probe_work);
305 snd_sof_fw_unload(sdev);
306 snd_sof_ipc_free(sdev);
307 snd_sof_free_debug(sdev);
308 snd_sof_free_trace(sdev);
311 * Unregister machine driver. This will unbind the snd_card which
312 * will remove the component driver and unload the topology
313 * before freeing the snd_card.
315 snd_sof_machine_unregister(sdev, pdata);
317 * Unregistering the machine driver results in unloading the topology.
318 * Some widgets, ex: scheduler, attempt to power down the core they are
319 * scheduled on, when they are unloaded. Therefore, the DSP must be
320 * removed only after the topology has been unloaded.
322 snd_sof_remove(sdev);
324 /* release firmware */
325 release_firmware(pdata->fw);
330 EXPORT_SYMBOL(snd_sof_device_remove);
332 MODULE_AUTHOR("Liam Girdwood");
333 MODULE_DESCRIPTION("Sound Open Firmware (SOF) Core");
334 MODULE_LICENSE("Dual BSD/GPL");
335 MODULE_ALIAS("platform:sof-audio");